CN113622243B

CN113622243B - Drainage brick

Info

Publication number: CN113622243B
Application number: CN202010383163.8A
Authority: CN
Inventors: 侯磊
Original assignee: Individual
Current assignee: Guangdong Xinruilong Ecological Building Materials Co ltd
Priority date: 2020-05-08
Filing date: 2020-05-08
Publication date: 2022-12-06
Anticipated expiration: 2040-05-08
Also published as: CN113622243A

Abstract

The invention relates to a drainage brick, which comprises a water inlet, a first sediment separation structure, a first drainage cavity, a second sediment separation structure, a second drainage cavity and a third sediment separation structure, wherein the water inlet is arranged at the water inlet side of the drainage brick; first silt separation structure sets up in inlet opening department and gets into first drainage chamber in order to prevent the silt of flowing in, and second silt separation structure sets up in first drainage chamber in order to prevent that the silt of flowing in from getting into second drainage chamber, and third silt separation structure sets up in second drainage chamber in order to prevent that the silt of flowing in from discharging to the external world. In above-mentioned technical scheme, filter the silt of flowing water through tertiary silt isolating construction, prevent that silt in the flowing water from making the drainage brick take place to block up, improve drainage rate, the drainage is effectual.

Description

Drainage brick

Technical Field

The disclosure relates to the technical field of building materials, in particular to a drainage brick.

Background

Drainage bricks and other permeable pavements are often adopted in public areas such as urban roads, squares, districts, parks and the like, so that rainwater runoff is fully replenished underground or a river channel is replenished after treatment, the river channel base flow is maintained, flood risk can be reduced, heat island effect is relieved, and the method is one of important measures for sponge city construction.

However, the existing permeable pavement of drainage bricks and the like often has the following problems:

1. corresponding silt and dust separation structures are not arranged, so that the risk of blockage and even loss of the permeable pavement function exists in northern areas with more dust; in addition, the existing permeable pavement is easy to cause the invasion of pollutants such as dust, garbage and the like on the pavement in the pavement cleaning process, and the permeable effect is influenced;

2. in order to ensure the water permeability rate, the water permeable material must ensure enough porosity, and the porosity is generally not less than 15%, but on the premise of ensuring the porosity of the water permeable pavement, the performance loss is often caused, the structural strength of the water permeable pavement is influenced, and the service life of the water permeable pavement is further influenced;

3. the existing permeable pavement has the characteristic of multiple pores and poor freezing resistance, and has poor use durability when applied to cold regions in northern China;

4. the permeable pavement often generates a large amount of building garbage in the installation and dismantling process, and the existing permeable concrete or permeable brick has low aggregate recycling and regeneration values and poor environmental protection and economical efficiency;

5. the service life of the existing permeable pavement is usually 10-20 years, which is far lower than that of other building structures, so that the dismantling and rebuilding frequency is relatively higher, and the practicability and the durability are poorer.

Disclosure of Invention

The utility model aims at providing a drainage brick, this drainage brick can keep apart silt, dust effectively, avoids the invasion of silt, dust, and drainage effect is good.

In order to achieve the purpose, the present disclosure provides a drainage brick, which includes a water inlet, a first silt separation structure, a first drainage cavity, a second silt separation structure, a second drainage cavity and a third silt separation structure, wherein the water inlet is arranged at a water inlet side of the drainage brick, the first drainage cavity and the second drainage cavity are both arranged inside the drainage brick, the first drainage cavity is used for being communicated with the water inlet, the second drainage cavity is communicated with the first drainage cavity, and the second drainage cavity is also communicated with the outside; the flowing water sequentially flows through the water inlet, the first drainage cavity and the second drainage cavity to be drained to the outside; first silt isolating construction set up in inlet opening department gets into in order to prevent silt in the flowing water first drainage chamber, second silt isolating construction set up in order to prevent silt in the flowing water in the first drainage chamber gets into the second drainage chamber, third silt isolating construction set up in order to prevent silt in the flowing water in the second drainage chamber and discharge to external.

Optionally, the first silt separating structure comprises a stop protrusion arranged circumferentially along the water inlet.

Optionally, second silt separation structure includes the silt backstop, the silt backstop set up in the bottom in first drainage chamber, with the bottom space in first drainage chamber prescribes a limit to the silt groove that is used for storing silt.

Optionally, the third silt separation structure includes at least one drain pipe, the entry end of drain pipe set up in the second drainage chamber and protrusion in the chamber bottom in this second drainage chamber, the exit end is used for communicating with the external world.

Optionally, the drain pipe is provided in plurality, and the distances between the inlet ends of the plurality of drain pipes and the bottom of the second drain cavity are different.

Optionally, the drain is configured as a siphon.

Optionally, the drainage brick further comprises a water retaining structure, and the water retaining structure is used for preventing flowing water which enters the first drainage cavity from the water inlet and is not filtered by the second silt separating structure from entering the second drainage cavity.

Optionally, the drainage brick further comprises a filter grid for covering the water inlet to filter the flow of water.

Optionally, the drainage brick is provided with an exhaust hole, one end of the exhaust hole is communicated with the second drainage cavity, and the other end of the exhaust hole is communicated with the outside.

Optionally, the drainage brick is including the drainage brick frame that is formed with the open end and set up the interior module of drainage brick in this drainage brick frame, the lateral wall of the interior module of drainage brick with the inside wall interval of drainage brick frame sets up in order to inject first drainage chamber, just the interior module of drainage brick with the drainage brick frame is in open end department injects the water inlet, be provided with in the interior module of drainage brick second drainage chamber, second drainage chamber through at least one inlet channel with first drainage chamber intercommunication, inlet channel's first end opening with first drainage chamber intercommunication, second end opening with second drainage chamber intercommunication.

Optionally, first silt separation structure includes that the backstop is protruding, the protruding edge of backstop the circumference of drainage brick frame set up in open end edge.

Optionally, the first drainage cavity includes, from top to bottom, a first region and a second region, the first region is tapered from top to bottom, and the second region is tapered from top to bottom.

Optionally, the drainage brick further comprises a water retaining structure, the water retaining structure comprises a water retaining plate, and the water retaining plate is arranged on the outer side wall of the drainage brick inner module and located above the first end opening to prevent flowing water entering the first drainage cavity from the water inlet but not filtered by the second silt separating structure from entering the second drainage cavity.

Optionally, the drainage brick outer frame is constructed to be a cuboid outer frame with one open end, the cuboid outer frame comprises four first inner side walls, the drainage brick inner module comprises four corresponding first outer side walls, the water inlet channel is arranged to be four and every the first end opening of the water inlet channel is correspondingly arranged on every first outer side wall.

Optionally, second silt separation structure includes that four second silt separation element set up in four with the correspondence on the first lateral wall, every second silt separation element is including all setting up the silt backstop and the silt drainage plate of first lateral wall bottom, the silt backstop is located the top of silt drainage plate, with the silt groove that is used for storing silt is injectd to the bottom in first drainage chamber.

Optionally, the drainage brick still includes water retaining structure, water retaining structure includes four breakwaters, every the breakwater sets up in every on the first lateral wall and be located it above first end open-ended top, in order to prevent to follow the water inlet gets into in the first drainage chamber but not the filterable flowing water of second silt separation element gets into in the second drainage chamber, every in the second silt separation element the breakwater silt backstop and silt drainage plate all follow rather than correspond the length direction of first lateral wall extends and with correspond the laminating of first inside wall length direction is last, the breakwater with silt backstop is the low structure in middle height both ends to shunt the flowing water to the both sides of silt drainage plate, silt drainage plate is the low structure in middle height both ends to assemble silt wherein.

Optionally, the drainage brick still includes the mounting panel, the below in second drainage chamber is formed with open mouth, mounting panel detachably install in open mouth department, third silt isolating construction includes at least one drain pipe, the drain pipe is worn to establish the mounting panel so that its entry end is located the inboard and protrusion in this mounting panel of mounting panel, the exit end of drain pipe is used for with external intercommunication.

Optionally, the drainage brick further comprises an exhaust pipe, one end of the exhaust pipe is close to the inner top wall of the second drainage cavity, and the other end of the exhaust pipe is communicated with the outside.

Optionally, the drainage brick outer frame is configured as a cylindrical outer frame with two open ends, the bottom end of the drainage brick inner module is used for plugging the bottom open end of the cylindrical outer frame, and the first drainage cavity further includes a third area disposed below the second area.

Optionally, the second silt separation structure includes silt backstop, silt backstop follows the circumference setting of module is in the bottom of its lateral wall and radially extends in the drainage brick interior, with the bottom space of first drainage chamber is injectd the silt groove that is used for storing silt.

Optionally, the drainage brick is including the rectangular body structure that is formed with inside cavity, set up and be in manger plate structure in the inside cavity and second silt isolating construction, the side of intaking of rectangular body structure be provided with a plurality ofly with inside cavity intercommunication the water inlet, the manger plate structure is including setting up the breakwater of water inlet below, second silt isolating construction includes the silt backstop, the breakwater with the silt backstop sets up relatively, and both are followed the first direction of rectangular body structure extends and with laminate along a pair of lateral wall that this first direction extends, with will inside cavity falls into first drainage chamber with second drainage chamber, the breakwater with silt backstop is followed the intercommunication is injectd to the tip of first direction first drainage chamber with the inlet channel of second drainage chamber.

Optionally, in the first direction, the water baffle is configured into an arc-shaped plate structure with a high middle part and low two ends.

Optionally, in the first direction, the bottom of the strip structure is in an arc shape with a low middle part and high two ends, the silt stop plate is also in an arc shape with a low middle part and high two ends, and is arranged above the bottom of the strip structure at intervals to define a silt groove for storing silt with the bottom of the strip structure, the silt stop plate comprises a stop plate body and Y-shaped plates arranged at two ends of the stop plate body, each Y-shaped plate comprises a first plate and a second plate which are connected with each other, the first plate is connected with the end of the stop plate body, the first plate is inclined inwards and is inclined upwards, and one end of the first plate, which is far away from the stop plate body, is located in an orthographic projection plane of the water baffle in the up-down direction; the second plate is connected to the outer side face of the first plate and is inclined downwards.

Optionally, the plurality of water inlets are arranged at intervals along a second direction and extend along the first direction, the drainage brick further comprises two exhaust holes for communicating the outside and the internal cavity, and the two exhaust holes are arranged on the water inlet side of the strip structure and are respectively located at two ends of the water inlets along the first direction.

In above-mentioned technical scheme, set up first silt isolating construction through the water inlet department at the drainage brick to set up second silt isolating construction and third silt isolating construction in its inside first drainage chamber and second drainage intracavity respectively, realize filtering the silt in the flowing water, prevent that silt in the flowing water makes the drainage brick take place to block up and then lose the drainage function, improve drainage rate, the drainage is effectual.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure, but do not constitute a limitation of the disclosure. In the drawings:

fig. 1 is a schematic structural view of a drainage brick outer frame of a drainage brick according to a first embodiment of the present disclosure, and illustrates a first silt separating structure;

FIG. 2 is a schematic sectional view showing a drainage brick according to a first embodiment of the present disclosure;

FIG. 3 is a schematic structural view of a third silt separating structure and a mounting plate of a drainage brick according to a first embodiment of the present disclosure;

FIG. 4 is a schematic structural view of a drainage brick according to a second embodiment of the present disclosure;

FIG. 5 is a schematic sectional view showing a drainage brick according to a second embodiment of the present disclosure;

fig. 6 and 7 are schematic structural views of a drainage brick according to a third embodiment of the present disclosure.

Description of the reference numerals

1. Water inlet of water drainage brick 11

12. First silt separation structure 13 first drainage cavity

131. First region 132 second region

133. 14 second silt separation structures in third district

140. Silt baffle plate of silt groove 141

1411. Stopper body 1412Y-shaped plate

14121. First plate 14122 second plate

142. Silt drainage plate 15 second drainage cavity

16. Third silt separation structure 10 drainage brick outer frame

100. Water inlet channel of module 101 in drainage brick

1011. First end opening 1012 second end opening

102. Water retaining structure for exhaust hole 20

200. Filter grid 300 mounting plate

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, the use of the directional words such as "upper and lower" in the case where no contrary explanation is made, refers to the upper and lower defined in the normal use state of the drainage tile; "high and low" are also based on the height and low defined by the drainage brick in the height direction under the normal use state, and "inside and outside" refer to the inside and outside of the specific structure contour; the use of terms such as "first," "second," and "third" is intended merely to distinguish one element from another, and is not intended to be sequential or important.

As shown in fig. 1 to 7, the present disclosure provides a drainage brick, the drainage brick 1 includes a water inlet 11, a first silt separating structure 12, a first drainage chamber 13, a second silt separating structure 14, a second drainage chamber 15, and a third silt separating structure 16. The water inlet 11 is arranged on the water inlet side of the drainage brick 1, the first drainage cavity 13 and the second drainage cavity 15 are both arranged inside the drainage brick 1, the first drainage cavity 13 is used for being communicated with the water inlet 11, the second drainage cavity 15 is communicated with the first drainage cavity 13, and the second drainage cavity 15 is also communicated with the outside; the running water on the road passes through the water inlet 11, the first drainage chamber 13, and the second drainage chamber 15 in sequence to be discharged to the outside, such as a replenishing underground or a replenishing river. First silt separation structure 12 sets up in water inlet 11 department so that the silt of preventing the flowing water gets into first drainage chamber 13, and second silt separation structure 14 sets up in first drainage chamber 13 so that the silt of preventing the flowing water gets into second drainage chamber 15, and third silt separation structure 16 sets up in second drainage chamber 15 so that the silt of preventing the flowing water is discharged to the external world.

In the above technical scheme, set up first silt isolating construction 12 through the water inlet 11 department at drainage brick 1 to set up second silt isolating construction 14 and third silt isolating construction 16 in its inside first drainage chamber 13 and second drainage chamber 15 respectively, realize filtering the silt in the flowing water, prevent that silt in the flowing water from making drainage brick 1 take place to block up and then lose the drainage function, improve drainage rate, the drainage is effectual.

In an embodiment, as shown in fig. 1, 4 and 6, the first silt separating structure 12 may include a stopper protrusion circumferentially arranged along the water inlet 11, silt in the flowing water settles at the periphery of the stopper protrusion under the action of the stopper protrusion, so as to form a first silt separating barrier for surface runoff to enter the drainage brick 1, and the stopper protrusion has a simple structure design and a good silt separating effect. When the protruding outlying silt of this backstop subsides when more, the clearance personnel only need with outlying silt clear up can, easy operation, practicality are strong. In the present disclosure, the first silt separating structure 12 may be configured in any suitable structure and shape, and may have a good separating effect on silt in the flowing water, which is not limited by the present disclosure.

Referring to fig. 2, 4 and 7, the second silt separating structure 14 may include a silt stopper plate 141, and the silt stopper plate 141 may be provided at the bottom of the first drainage chamber 13 to define a silt tank 140 for storing silt in the bottom space of the first drainage chamber 13. After flowing water filters through the first layer of the first silt separation structure 12 of water inlet 11 department, enter into first drainage chamber 13, flowing water is slowly accumulated from the bottom in first drainage chamber 13, and silt in flowing water also subsides in the bottom of first drainage chamber 13 under the effect of self gravity, because be provided with silt backstop plate 141 in the bottom of this first drainage chamber 13, this silt backstop plate 141 prescribes a limit to silt groove 140 that is used for saving silt in the bottom space of first drainage chamber 13, silt deposit in first drainage chamber 13 water is in this silt groove 140, silt backstop plate 141 can play the backstop effect to silt, avoid silt in silt groove 140 to flow out and then get into the second drainage chamber, cause the jam, influence the drainage effect. The second silt separation structure 14 is configured as a second silt separation barrier for silt in the flowing water, further separating silt. In the present disclosure, the second silt separating structure 14 may be configured in any suitable shape and structure, which can achieve a good separation effect on silt in the flowing water, and the disclosure is not limited thereto.

Referring to fig. 2, 3, 5 and 7, the third sand-mud separating structure 16 includes at least one drain pipe, an inlet end of the drain pipe is disposed in the second drain cavity 15 and protrudes out of the cavity bottom of the second drain cavity 15, and an outlet end of the drain pipe is used for communicating with the outside, so that the flowing water can be fed back to the ground or collected to enter a storage facility. In this embodiment, the third silt separation structure 16 serves at least two purposes: the first and third silt separating structures 16 are constructed into a drain pipe structure to play a role in discharging the flowing water in the drain brick; second, at the bottom of the entry end protrusion in second drainage cavity 15's of drain pipe chamber, the flowing water that gets into second drainage cavity 15 from first drainage cavity 13 upwards accumulates from the bottom of second drainage cavity 15, and silt in the flowing water subsides in the bottom of second drainage cavity 15 under the effect of self gravity, along with the rising of second drainage cavity 15 internal flowing water liquid level, when the liquid level is higher than the entry end of drain pipe, the water in the second drainage cavity 15 process drain pipe anaplerosis underground or anaplerosis river course. This third silt separation structure 16 that structure is the drainage tube structure utilizes the difference in height between drain pipe entry end and the 15 bottoms in second drainage chamber to make the silt in the flowing water subside in fact to as last silt separation protective screen, prevent that silt from blockking up the speed that the drain pipe influences the drainage, improve the effect of drainage. In addition, because a certain height difference exists between the inlet end of the drainage pipe and the bottom of the cavity, in the non-rainfall period, the second drainage cavity 15 can accumulate a certain amount of rainwater for volatilization, and a local microenvironment is improved. In the present disclosure, the third silt separating structure 16 may be configured in any suitable structure and shape, and a good drainage effect may be achieved, which is not limited by the present disclosure. Further, the above-described drain pipe may be configured as a siphon pipe to increase the flow rate of the drain water.

In one embodiment, as shown in fig. 3, the drain pipe may be provided in plurality, and the inlet ends of the plurality of drain pipes may be spaced at different distances from the bottom of the second drain chamber 15. Under the condition of small rainfall, the drainage pipe with the inlet end being less from the bottom of the second drainage cavity 15 can finish the drainage work; under the condition of large rainfall, a plurality of drainage pipes with different heights work simultaneously and play a drainage role gradually, so that the superposition of drainage effects is realized. That is, when setting up the drain pipe, the drain pipe entry end is highly different with second drainage chamber 15 to can realize the purpose of multistage drainage, the drainage requirement when satisfying different areas, different intensity rainfall. Besides the above-mentioned certain setting of the height of the inlet end of the drain pipe, certain setting of the caliber and the number of the drain pipes can be performed, and the requirement of multi-stage drainage can be met, which is not limited in the present disclosure.

Optionally, referring to fig. 2, 5 and 7, the drainage brick 1 may further include a water blocking structure 20, wherein the water blocking structure 20 is used for preventing flowing water, which enters the first drainage chamber 13 from the water inlet 11 but is not filtered by the second sand separating structure 14, from directly entering the second drainage chamber 15. Avoid getting into the silt in the second drainage chamber 15 inflow more, and then exceed third silt disengaging structure 16's work load, cause silt in the second drainage chamber 15 to get into in the drain pipe and make it block up, influence the speed of drainage, reduce the effect of drainage. In the present disclosure, the water retaining structure 20 may be configured in any suitable shape and structure, which can effectively prevent the flowing water at the water inlet 11 from directly entering the second drainage chamber 15, and the present disclosure is not limited thereto.

Optionally, as shown in fig. 2, the drainage brick 1 may further include a filtering grid 200, and the filtering grid 200 is used for covering the water inlet 11 to filter the flowing water, so as to prevent pollutants such as cigarette ends and garbage in the surface runoff from entering and affecting the drainage effect. The filtering grill 200 may be made of metal such as stainless steel or plastic to cope with a severe working environment and to improve a lifespan thereof.

As shown in fig. 2, 4, 5 and 6, the drainage brick 1 may further be provided with a vent hole 102, the vent hole 102 may be disposed above the drainage brick 1, one end of the vent hole 102 is communicated with the second drainage cavity 15, and the other end is used for being communicated with the outside. The air pressure inside the drainage brick and the air pressure outside the drainage brick can be balanced by arranging the air inlet holes 102 connected with the outside, and the influence on the water inlet speed due to the fact that air is held out above the inside of the second drainage cavity 15 of the drainage brick 1 is avoided. The vent 102 may be configured in any suitable shape to meet the venting requirements.

Correspondingly, in order to prevent the drainage rate of the drainage brick 1 from being large, which causes the inside lower part of the second drainage cavity 15 to be suffocated and affects the drainage flow rate, an air pressure balance pipeline (not shown) may be arranged in the second drainage cavity 15 of the drainage brick 1, one end of the air pressure balance pipeline is close to the top surface of the second drainage cavity 15, and the other end of the air pressure balance pipeline extends out of the drainage brick 1. Specifically, the length of the air pressure balance pipeline extending out of the drainage brick 1 is 10-50mm, and the distance between the air pressure balance pipeline and the top surface of the second drainage cavity 15 is 3-10mm.

The vent holes 102 can be used as lifting holes for the drainage bricks 1, in addition to venting. For example, in one usage scenario, the drainage brick 1 is embedded in the road surface, and the drainage side of the drainage brick 1 is flush with the ground surface or slightly lower than the ground surface, so that the flatness and the usage function of the road surface are not affected. When the drainage brick 1 needs to be taken out for cleaning or replacement, an operator can insert a lifting tool such as a steel wire hook into the exhaust hole 102 and abut against the inner wall of the drainage brick 1, and the drainage brick 1 can be taken out from the road surface by lifting the steel wire hook, so that the operation of the operator is facilitated.

In one embodiment, as shown in fig. 1, 2, 4 and 5, the drainage brick 1 may include a drainage brick outer frame 10 formed with an open end and a drainage brick inner module 100 disposed inside the drainage brick outer frame 10. The distributed drainage brick 1 does not need to adopt porous materials in material selection, and the service effects of the drainage brick 1 such as strength, frost resistance and durability can be comprehensively improved. In addition, in the aspect of material selection, the drainage brick 1 can use recycled aggregate such as construction waste and the like, and realizes energy conservation, material conservation and cost conservation.

The lateral wall of module 100 sets up in order to inject first drainage chamber 13 with the inside wall interval of drainage brick frame 10 in the drainage brick, and the module 100 limits water inlet 11 with drainage brick frame 10 in open end department in the drainage brick, be provided with second drainage chamber 15 in the drainage brick module 100, second drainage chamber 15 is through at least one inlet channel 101 and first drainage chamber 13 intercommunication, inlet channel 101's first end opening 1011 and first drainage chamber 13 intercommunication, second end opening 1012 and second drainage chamber 15 intercommunication. The outer frame 10 of the drainage brick can well protect the inner module 100 of the drainage brick arranged therein and prevent the inner module 100 of the drainage brick from being structurally damaged. In addition, the drainage brick outer frame 10 and the drainage brick inner module 100 are arranged at intervals, so that the water inlet 11 and the first drainage cavity 13 are formed, and meanwhile, an operator can conveniently take the drainage brick inner module 100 out of the drainage brick outer frame 10, and the drainage brick outer frame and the drainage brick inner module are convenient to clean and replace.

Specifically, the outer frame 10 of the drainage brick can be made of recycled plastic, the inner module 100 of the drainage brick can be formed by HDPE extrusion molding, or the outer shell of the inner module 100 of the drainage brick is manufactured by extrusion molding production, and then high-strength fine aggregate concrete is poured into the outer shell, so as to improve the bearing capacity of the inner module 100 of the drainage brick. In addition, the drainage brick 1 of the type has low manufacturing cost, when the drainage brick 1 is laid, the drainage side which is flush with the ground or is slightly lower than the ground can adopt the material with the same color and texture as the ground, the harmony and the aesthetic property of the whole appearance of the pavement are realized, and in addition, the drainage brick 1 can be used alone or mixed with a block pavement and a concrete pavement.

Referring to fig. 1 and 4, the first sand-and-sand separating structure 12 may include a stopper protrusion, which may be disposed at an open end edge along a circumferential direction of the drainage brick outer frame 10 to block sand and sand in surface runoff, and prevent sand and dust carried by sand and sand in surface runoff from intruding into the water inlet 11 defined at the open end by the drainage brick inner module 100 and the drainage brick outer frame 10, thereby affecting a drainage effect.

In one embodiment, as shown in fig. 2 and 5, the first drainage chamber 13 may include a first region 131 and a second region 132 from top to bottom, the first region 131 is tapered from top to bottom, and the second region 132 is tapered from top to bottom. Firstly, when flowing water entering the first drainage cavity 13 from the water inlet 11 flows through the first area 131, since the first area 131 is gradually expanded from top to bottom, under the condition of heavy rainfall, the gradually expanded first area 131 can meet the drainage requirement of a large amount of water, and the drainage effect cannot be influenced by the small first drainage cavity 13; secondly, the second region 132 is tapered from top to bottom, and in the process of accumulating the running water in the second region 132, the tapered second region 132 can facilitate the sedimentation of silt in the running water, and improve the effect of silt separation. In addition, the internal space of the first drainage chamber 13 constructed by the first and

second regions

131 and 132 is also large as a whole, and thus different levels of drainage requirements can be satisfied. The present disclosure does not limit the specific shape of the first drainage chamber 13, and may be configured in any suitable shape to meet the requirement of drainage.

In one embodiment, as shown in fig. 2 and 5, the water retaining structure 20 of the drainage brick 1 may be configured as a water retaining plate, which may be disposed on the outer sidewall of the drainage brick inner module 100 and above the first end opening 1011 to prevent flowing water entering the first drainage cavity 13 from the water inlet 11 but not filtered by the second silt separating structure 14 from entering the second drainage cavity 15, so as to avoid more silt entering the second drainage cavity 15, and further exceed the working load of the third silt separating structure 16, so that silt in the second drainage cavity 15 enters the drainage pipe to block the drainage pipe, thereby affecting the drainage rate and reducing the drainage effect.

Referring to fig. 1 to 3, in a first embodiment provided by the present disclosure, a drainage brick outer frame 10 may be configured as a rectangular parallelepiped outer frame with one open end, the rectangular parallelepiped outer frame includes four first inner side walls, a drainage brick inner module 100 includes four corresponding first outer side walls, and a water inlet channel 101 may be provided in four and a first end opening 1011 of each water inlet channel 101 is correspondingly provided on each first outer side wall to improve drainage capacity. The drainage brick 1 with the overall structure of the cuboid shape has simple structure and is convenient to manufacture. In addition, in a specific application, the drainage brick 1 constructed in a rectangular parallelepiped shape can be applied to a newly-built road surface to satisfy the drainage requirement of the road surface, or to replace the existing drainage structure on the existing road surface which has lost the drainage function.

Optionally, the drainage brick 1 may have an overall dimensional specification of 200 × 70mm and a maximum water penetration rate of 1.5L/s. When the pavement of the pavement is carried out, the pavement density can be 7.5 square meters per block, and because the rainfall intensity is usually low, in order to quickly remove water accumulated on the pavement and prevent the uneven settlement of the pavement, the pavement density can also be properly increased by 2-3 times, namely, the pavement is carried out according to 2.5-5 square meters per block, and compared with the drainage structure in the prior art, the number of the arranged square meters is small, the cost is low, and the value is effectively increased for projects.

Further, second silt separation structure 14 can include that four second silt separation cells set up on four first lateral walls with corresponding, and every second silt separation cell is including setting up silt backstop 141 and silt drainage plate 142 in first lateral wall bottom all, and silt backstop 141 is located the top of silt drainage plate 142 to define the silt groove 140 that is used for storing silt at the bottom of first drainage chamber 13. In other words, be provided with 4 second silt separation cell around the bottom of first drainage chamber 13 to the silt that flows into in first drainage chamber 13 separates, prevents that silt from getting into in second drainage chamber 15, and holistic silt separating capacity is stronger.

Furthermore, referring to fig. 2, the drainage brick 1 may further include a water retaining structure 20, the water retaining structure 20 includes four water retaining plates, each water retaining plate is disposed on each first outer sidewall and located above the first end opening 1011, so as to prevent flowing water entering the first drainage cavity 13 from the water inlet 11 but not filtered by the second sand-mud separation unit from entering the second drainage cavity 15, the water retaining plate in each second sand-mud separation unit, the mud-mud retaining plate 141 and the mud-mud drainage plate 142 both extend along the length direction of the corresponding first outer sidewall and are attached to the corresponding first inner sidewall, in the length direction, the water retaining plate and the mud-mud retaining plate 141 are of a structure with high middle ends and low ends, so as to divide the flowing water to the two sides of the mud-mud drainage plate, and the mud drainage plate 142 is of a structure with low middle ends and high ends, so as to collect mud therein. Alternatively, the thickness of the splash plate and the silt stop plate 141 may be gradually smaller from the middle to both ends to guide the flowing water, or the thickness of the splash plate and the silt stop plate 141 may be the same from the middle to both ends, for example, configured as an arc plate structure with uniform thickness. Similarly, the thickness of the silt diversion plate 142 from the middle to the two ends may be the same or different. In summary, the baffle, silt stop 141 and silt diversion plate 142 may be constructed in any shape and structure that meets the requirements properly and falls within the scope of the present disclosure.

In addition, the water baffle and the silt flow guide plate 142 also have a supporting effect on the drainage brick outer frame 10, so that the overall strength and stability of the drainage brick outer frame 10 are improved.

In the process of draining water in the drainage brick 1, taking one side of the drainage brick 1 with a cuboid structure as an example, surface runoff is filtered by the first sediment separation structure 12 at the water inlet 11 and then enters the first drainage cavity 13 inside the drainage brick 1. The first entering running water will first pass the stop of the water deflector to prevent direct entry into the second drainage chamber 15 through the water inlet channel 101. It can be known from the above that, the thickness of the water baffle plate is gradually reduced from the middle to the two ends, and the stopped flowing water flows towards the two ends under the action of gravity; and by last still know be, silt drainage plate 142 is from middle thickness crescent to both ends, then flow the back downwards from the both ends of breakwater when flowing water, can flow to the both ends of silt drainage plate 142 earlier, and flow to the centre of silt drainage plate 142 under the effect of gravity, at the in-process that flows, silt in the flowing water can slowly be followed the middle part of silt drainage plate 142 and upwards piled up, until with the silt backstop 141 butt that is located silt drainage plate 142 top, silt in whole silt groove 140 reaches the state that the deposit is full, then need operating personnel to clear up, specifically clear up and can take out drainage brick inner module 100 from drainage brick frame 10, in order to wash by water, clean or invade bubble etc. mode and take out the impurity in drainage brick 1.

In one embodiment, as shown in fig. 3, the drainage brick may further include a mounting plate 300, an open port may be formed below the second drainage chamber 15, the mounting plate 300 may be detachably mounted at the open port, the third silt separating structure 16 includes at least one drain pipe, the drain pipe penetrates the mounting plate 300 such that an inlet end of the drain pipe is located at an inner side of the mounting plate 300 and protrudes out of the mounting plate 300, and an outlet end of the drain pipe is used for communicating with the outside. First, by providing a detachable mounting plate 300 to be installed at the opening of the second drainage chamber 15, and a third sand separating structure 16 configured as a drainage pipe may be provided on the mounting plate 300, it is convenient for an operator to detach the mounting plate 300 to clean the sand deposited thereon. For example, the mounting plate 300 may be detachably mounted to the opening of the second drain chamber 15 by means of clamping or bolting.

Referring to fig. 4 to 5, in a second embodiment provided by the present disclosure, the drainage brick outer frame 10 may be configured as a cylindrical outer frame with both ends open, the bottom end of the drainage brick inner module 100 is used for blocking the bottom open end of the cylindrical outer frame, and the first drainage chamber 13 further includes a third area 133 disposed below the second area to further increase the volume of the first drainage chamber 13. Optionally, in the third area 133, the distance from any position on the outer sidewall of the module 100 in the drainage brick to the inner sidewall of the outer frame of the cylinder may be equal or different, which is not limited in this disclosure. The drainage brick with the overall structure in the shape of a cylinder is simple in structure and convenient to manufacture. In addition, when the concrete application is carried out, the drainage brick 1 which is constructed in the shape of the cylinder can be mainly applied to the new construction and the repair of the pervious concrete pavement, and the installation pore of the drainage brick 1 can be processed by drilling on the concrete pavement.

Optionally, the drainage brick 1 has an overall dimension specification of

The maximum water permeation rate was 1.6L/s. When the pavement of the pavement is carried out, the pavement density can be 8.0 square meters per block, the rainfall intensity is usually low, in order to quickly remove accumulated water on the pavement and prevent the uneven settlement of the pavement, the pavement density can be properly increased by 2-4 times, namely, the pavement is carried out according to 2-4 square meters per block, and compared with the drainage structure in the prior art, the number of the arranged water drainage structures is small, the cost is low, and the value is effectively increased for projects.

Specifically, referring to fig. 5, the second sediment separation structure 14 may include a sediment stopper plate 141, and the sediment stopper plate 141 is disposed at the bottom of the outer sidewall thereof in the circumferential direction of the drainage block inner module 100 and extends in the radial direction to define a sediment tank 140 for storing sediment in the bottom space of the first drainage chamber 13. So that silt in the inflow water in the first drainage cavity 13 settles in the silt groove 140, and is stopped by the silt stop plate 141, and the silt is prevented from entering the second drainage cavity 15 through the water inlet channel 101.

In one embodiment, a gap is formed between an end of the sand stopper plate 141, which is far from the drainage brick inner module 100, and an inner side wall of the drainage brick outer frame 10, so as to guide the running water to flow downward into the sand tank 140 from the gap, so that the sand in the running water is deposited in the sand tank 140. Further, the upper surface of the sand stopper plate 141 may be configured to be downwardly inclined so that running water flows downwardly. In addition, similar to the silt stopper plate 141, the water baffle may be configured to be inclined downward, and guide the flowing water toward the silt groove 140 while stopping the flowing water from directly entering the second drainage chamber 15 through the water inlet passage 101.

Referring to fig. 6 and 7, in a third embodiment provided by the present disclosure, the drainage brick 1 includes a strip structure formed with an internal cavity, the strip structure includes a water retaining structure 20 and a second silt separating structure 14 disposed in the internal cavity, a water inlet side of the strip structure is provided with a plurality of water inlets 11 communicated with the internal cavity, the water retaining structure 20 includes a water baffle disposed below the water inlets 11, the second silt separating structure 14 includes a silt stopper 141, the water baffle and the silt stopper 141 are disposed oppositely, both extend along a first direction a of the strip structure and are attached to a pair of side walls extending along the first direction a, so as to divide the internal cavity into a first drainage cavity 13 and a second drainage cavity 15, and an end of the water baffle and the silt stopper 141 along the first direction a defines a water inlet passage 101 communicating the first drainage cavity 13 and the second drainage cavity 15. The strip structure is different from the combined drainage brick 1 of the drainage brick outer frame 10 and the drainage brick inner module 100, is constructed into an integral structure, and has simple structure and strong structural stability. The pavement paving agent can be applied to pavement such as concrete and the like.

Optionally, the drainage brick 1 configured as a strip structure has an overall dimension specification of 150 × 15 × 90mm, and the maximum water permeability rate may reach 1.8L/s. In terms of material selection, the outer shell of the strip body structure can be made of plastic or metal material, and the inner body of the drainage brick 1 can be formed by HDPE extrusion molding. The top is provided with a grating cover plate. When the pavement of the pavement is carried out, the pavement density can be 9 square meters per block, the rainfall intensity is usually low, in order to quickly remove accumulated water on the pavement and prevent the uneven settlement of the pavement, the pavement density can be properly increased by 2-3 times, namely, the pavement is carried out according to 3-6 square meters per block, and compared with the drainage structure in the prior art, the number of the arranged drainage structures is small, the cost is low, and the value is effectively increased for projects.

Referring to fig. 7, in the first direction a, the water guard is configured as an arc-shaped plate structure with a high middle and low two ends, so that the flowing water entering from the water inlet 11 flows to the two ends of the water guard and then flows into the first drainage chamber 13. The shape and the structure of the water baffle are not specifically limited by the disclosure, and the requirement of water drainage can be met, which is not limited by the disclosure.

Specifically, in the first direction a, the bottom of the strip structure is in an arc shape with a low middle part and two high ends, the silt stop plate 141 is also in an arc shape with a low middle part and two high ends and is arranged above the bottom of the strip structure at intervals so as to define a silt groove 140 for storing silt with the bottom of the strip structure, the silt stop plate 141 comprises a stop plate body 1411 and Y-shaped plates 1412 arranged at two ends of the stop plate body 1411, the Y-shaped plates 1412 comprise a first plate 14121 and a second plate 14122 which are connected with each other, the first plate 14121 is connected with the end of the stop plate body 1411, the first plate 14121 is inclined inwards and is inclined upwards, and one end of the first plate 14121, which is far away from the stop plate body 1411, is located in a forward projection plane in the up-down direction of the water baffle; the second plate 14122 is connected to an outer side surface of the first plate 14121 in an inclined downward shape.

When the drainage brick 1 with the strip structure is used for drainage, surface runoff flows to the water baffle arranged below the surface runoff after passing through the water inlet 11, and the water baffle is in an arc shape with a high middle and low two ends, so that running water can flow to the two ends of the water baffle. Because the end of the first plate 14121 far from the stopper body 1411 is located in the front projection plane of the water baffle in the up-down direction, the flowing water will pass over the first plate 14121 and be guided by the second plate 14122 in the downward inclined shape to flow into the silt basin 140 defined by the silt stopper 141 and the bottom of the elongated structure for storing silt. It will be appreciated that the bottom of the body structure and the silt stop 141 are both low in the middle and high at the ends, and that the defined silt chute 140 is also low in the middle and high at the ends. After flowing into the silt basin 140, the flowing water slowly spreads from the middle part of the silt basin 140 to the two ends, and silt in the flowing water is also deposited from the middle part of the silt basin 140 to the two ends; when the height of the flowing water passes over the water inlet passage 101 defined by the ends of the breakwater and silt stopper plate 141, the flowing water flows into the second drainage chamber 15, and silt in the silt groove 140 is stopped in the silt groove by the second plate member 14122. Flowing water gets into and upwards accumulates from the bottom chamber behind the second drainage chamber 15, and at the in-process of this accumulation, silt in the flowing water can subside on the bottom chamber under the effect of self gravity, and when the high entry end of crossing the drain pipe of flowing water accumulation, flowing water mends to ground or river course through the drain pipe that passes silt backstop plate 141 and rectangular structure bottom in proper order.

More specifically, referring to fig. 7, the plurality of water inlets 11 are spaced along the second direction B and extend along the first direction a, the drainage brick further includes two air outlet holes 102 for communicating the outside with the internal cavity, and the two air outlet holes 102 are disposed at the water inlet side of the strip structure and located at two ends of the water inlets 11 along the first direction a, respectively. The air pressure inside the drainage brick and the air pressure outside the drainage brick can be balanced by arranging the air inlet holes 102 connected with the outside, and the influence on the water inlet speed due to the fact that air is held out above the inside of the second drainage cavity 15 of the drainage brick 1 is avoided. The vent 102 may be configured in any suitable shape to meet the venting requirements. The exhaust hole 102 may also be configured as the above-mentioned lifting hole, which is not described herein. In addition, the exhaust hole 102 can perform exhaust and can also perform in-situ cleaning on the drainage brick 1. That is, the drainage brick 1 can be cleaned without taking the drainage brick 1 out of the ground. The specific operation process is as follows: a flushing pipe is inserted into one of the exhaust holes 102, a water suction pipe is inserted into the other exhaust hole 102, and the silt tank 140 is cleaned by flushing water with certain pressure, so that silt in the silt tank 140 is flushed and discharged. However, when the clogging of the interior of the drainage brick 1 is serious, the drainage brick 1 constructed in the elongated structure may be taken out from the ground, and then the panel of the elongated structure may be removed, so that the interior of the drainage brick 1 may be cleaned.

The appearance and the size of this drainage brick 1 of disclosure are various, can construct into cuboid, cylinder, triangular prism or other various special-shaped structures, and the colour of drainage brick 1 can be adjusted according to the demand, can keep consistent in order to construct harmonious aesthetic feeling with the road surface colour, perhaps inconsistent in order to form aesthetic difference.

The preferred embodiments of the present disclosure are described in detail above with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details in the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the above embodiments, the various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations will not be further described in the present disclosure.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. A drainage brick is characterized in that the drainage brick (1) comprises a water inlet (11), a first sediment separation structure (12), a first drainage cavity (13), a second sediment separation structure (14), a second drainage cavity (15) and a third sediment separation structure (16),

the water inlet (11) is arranged on the water inlet side of the drainage brick (1), the first drainage cavity (13) and the second drainage cavity (15) are both arranged inside the drainage brick (1), the first drainage cavity (13) is used for being communicated with the water inlet (11), the second drainage cavity (15) is communicated with the first drainage cavity (13), and the second drainage cavity (15) is further communicated with the outside;

the flowing water sequentially flows through the water inlet (11), the first drainage cavity (13) and the second drainage cavity (15) to be discharged to the outside;

the first silt separation structure (12) is arranged at the water inlet (11) to prevent silt in flowing water from entering the first drainage cavity (13), the second silt separation structure (14) is arranged in the first drainage cavity (13) to prevent silt in flowing water from entering the second drainage cavity (15), and the third silt separation structure (16) is arranged in the second drainage cavity (15) to prevent silt in flowing water from being discharged to the outside;

the drainage brick (1) comprises a drainage brick outer frame (10) with an open end and a drainage brick inner module (100) arranged in the drainage brick outer frame (10),

the outer side wall of the drainage brick inner module (100) and the inner side wall of the drainage brick outer frame (10) are arranged at intervals to define the first drainage cavity (13), the drainage brick inner module (100) and the drainage brick outer frame (10) define the water inlet (11) at the open end,

the second drainage cavity (15) is arranged in the drainage brick inner module (100), the second drainage cavity (15) is communicated with the first drainage cavity (13) through at least one water inlet channel (101), a first end opening (1011) of the water inlet channel (101) is communicated with the first drainage cavity (13), and a second end opening (1012) is communicated with the second drainage cavity (15);

the first drainage cavity (13) comprises a first area (131) and a second area (132) from top to bottom, the first area (131) is gradually expanded from top to bottom, and the second area (132) is gradually contracted from top to bottom.

2. A drainage brick according to claim 1, characterized in that the first silt separating structure (12) comprises a stop projection arranged circumferentially along the water inlet (11).

3. A drainage brick according to claim 1, characterized in that the second silt separating structure (14) comprises a silt stopper (141), the silt stopper (141) being arranged at the bottom of the first drainage chamber (13) to define a silt basin (140) for storing silt in the bottom space of the first drainage chamber (13).

4. A drainage brick according to claim 1, characterised in that the third silt separating structure (16) comprises at least one drainage pipe, the inlet end of which is arranged in the second drainage chamber (15) and protrudes from the bottom of the second drainage chamber (15), and the outlet end is adapted to communicate with the outside.

5. A draining brick according to claim 4, characterised in that the number of draining pipes is arranged in plurality and that the inlet ends of the plurality of draining pipes are at unequal distances from the bottom of the second draining chamber (15).

6. A drainage brick as claimed in claim 5, characterized in that the drainage pipe is configured as a siphon.

7. A drainage brick according to claim 1, characterized in that the drainage brick (1) further comprises a water retaining structure (20), the water retaining structure (20) being adapted to prevent running water entering the first drainage chamber (13) from the water inlet (11) but not filtered by the second silt separating structure (14) from entering the second drainage chamber (15).

8. A drainage brick according to claim 1, characterized in that the drainage brick (1) further comprises a filter grate (200), the filter grate (200) being intended to cover the water inlet (11) for filtering running water.

9. A drainage brick according to claim 1, characterized in that the drainage brick (1) is provided with a vent hole (102), one end of the vent hole (102) is communicated with the second drainage chamber (15), and the other end is used for being communicated with the outside.

10. A drainage brick according to any of claims 1-9, characterized in that the first silt separating structure (12) comprises a stop projection arranged at the edge of the open end in the circumferential direction of the drainage brick outer frame (10).

11. A drainage brick according to any of claims 1-9, characterized in that the drainage brick (1) further comprises a water retaining structure (20), the water retaining structure (20) comprising water retaining plates arranged on the outer side walls of the drainage brick inner module (100) above the first end opening (1011) to prevent running water entering the first drainage chamber (13) from the water inlet (11) but not filtered by the second silt separating structure (14) from entering the second drainage chamber (15).

12. The draining brick according to claim 1, wherein the draining brick outer frame (10) is configured as a rectangular parallelepiped outer frame with one open end, the rectangular parallelepiped outer frame comprises four first inner side walls, the draining brick inner module (100) comprises four corresponding first outer side walls, the water inlet channels (101) are arranged in four, and the first end opening (1011) of each water inlet channel (101) is correspondingly arranged on each first outer side wall.

13. A drainage brick according to claim 12, characterized in that the second silt separating structure (14) comprises four second silt separating units arranged correspondingly on four of the first outer side walls, each of the second silt separating units comprising a silt stopper plate (141) and a silt flow guide plate (142) both arranged at the bottom of the first outer side wall, the silt stopper plate (141) being located above the silt flow guide plate (142) to define a silt groove (140) for storing silt at the bottom of the first drainage chamber (13).

14. The drainage brick according to claim 13, characterized in that drainage brick (1) further comprises a water retaining structure (20), wherein water retaining structure (20) comprises four water baffles, each water baffle is arranged on each first outer side wall and above the first end opening (1011) to prevent water from entering from water inlet (11) into first drainage chamber (13) but not passing through the filtered running water of second silt separation unit into second drainage chamber (15), each water baffle in second silt separation unit, silt stopper (141) and silt flow guide plate (142) extend along the length direction of first outer side wall corresponding to the water baffle and are attached to the corresponding first inner side wall, in the length direction, water baffle and silt stopper (141) are of a structure with middle high ends and low ends to divert the running water to the two sides of silt flow guide plate (142), and silt guide plate (142) is of a structure with middle low ends and high ends to gather silt.

15. A drainage brick as claimed in claim 13, characterized in that the drainage brick (1) further comprises a mounting plate (300), an open mouth is formed below the second drainage chamber (15), the mounting plate (300) is detachably mounted at the open mouth, the third silt separating structure (16) comprises at least one drainage pipe, the drainage pipe is arranged through the mounting plate (300) so that the inlet end of the drainage pipe is positioned at the inner side of the mounting plate (300) and protrudes from the mounting plate (300), and the outlet end of the drainage pipe is used for communicating with the outside.

16. A drainage brick according to claim 13, characterized in that the drainage brick (1) further comprises an exhaust pipe, one end of which is close to the inner top wall of the second drainage chamber (15) and the other end is adapted to communicate with the outside.

17. A drainage brick according to claim 1, characterized in that the drainage brick outer frame (10) is configured as a cylindrical outer frame with two open ends, the bottom end of the drainage brick inner module (100) being used to close off the bottom open end of the cylindrical outer frame, the first drainage chamber (13) further comprising a third area (133) arranged below the second area.

18. A drainage brick according to claim 17, characterized in that the second silt separating structure (14) comprises a silt stopper (141), the silt stopper (141) being arranged at the bottom of the outer side wall thereof in the circumferential direction of the drainage brick inner module (100) and extending in the radial direction to define a silt groove (140) for storing silt in the bottom space of the first drainage chamber (13).

19. A drainage brick according to claim 1, characterized in that the drainage brick (1) comprises a strip structure forming an inner cavity, a water retaining structure (20) arranged in the inner cavity and the second silt separating structure (14),

the water inlet side of the strip body structure is provided with a plurality of water inlets (11) communicated with the internal cavity, the water retaining structure (20) comprises a water retaining plate arranged below the water inlets (11), the second silt separating structure (14) comprises a silt baffle plate (141),

the breakwater with silt backstop (141) sets up relatively, and both are followed the first direction (A) of rectangular body structure extends and with follow a pair of lateral wall laminating that this first direction (A) extended, with will inside cavity divide into first drainage chamber (13) with second drainage chamber (15), the breakwater with silt backstop (141) are followed the intercommunication is injectd to the tip of first direction (A) first drainage chamber (13) with inlet channel (101) of second drainage chamber (15).

20. A drainage brick according to claim 19, characterized in that the breakwater is configured as an arc-shaped plate structure with a high middle and low ends in the first direction (a).

21. A drainage brick according to claim 19, characterized in that in the first direction (A) the bottom of the elongated body structure is in the shape of an arc low in the middle and high at both ends, and the silt stop plate (141) is also in the shape of an arc low in the middle and high at both ends and is arranged spaced above the bottom of the elongated body structure to define with the bottom of the elongated body structure a silt container (140) for storing silt,

the silt baffle plate (141) comprises a baffle plate body (1411) and Y-shaped plates (1412) arranged at two ends of the baffle plate body (1411),

the Y-shaped plate (1412) comprises a first plate (14121) and a second plate (14122) which are connected with each other, the first plate (14121) is connected with the end of the stopper body (1411), the first plate (14121) is inclined inwards and upwards, and one end, far away from the stopper body (1411), of the first plate (14121) is located in an orthographic projection plane of the water baffle in the up-down direction;

the second plate (14122) is connected to the outer side surface of the first plate (14121) and is inclined downward.

22. A drainage brick according to claim 19, characterized in that a plurality of said water inlets (11) are arranged at intervals along a second direction (B) and extend along said first direction (a), said drainage brick further comprising two air vents (102) for communicating the outside with said internal cavity, said two air vents (102) being arranged at the water inlet side of said elongated body structure and located at the two ends of said water inlets (11) along said first direction (a), respectively.