WO2024138875A1 - Automatic water stop joint - Google Patents

Abstract

An automatic water stop joint (100), comprising a joint pipe body (1) and a water stop valve core (2) arranged in the joint pipe body (1). One end of the joint pipe body (1) is provided with a water inlet (11), and the other end of the joint pipe body (1) is provided with a water outlet (12). The water stop valve core (2) comprises: a fixed valve core (21), a movable valve core (22), and an elastic component (23); the fixed valve core (21) is cylindrical, a water stop cavity (211) having an opening at one end is formed along the axial direction of the fixed valve core (21), and a water inlet hole (212) used for communicating the water stop cavity (211) with the water inlet (11) of the joint pipe body (1) is formed on the side wall of the fixed valve core (21); the movable valve core (22) is arranged in the water stop cavity (211) of the fixed valve core (21), and the movable valve core (22) comprises a flow guide section (221) and a water stop section (222) which are integrally formed; the elastic component (23) is arranged in the water stop cavity (211), one end of the elastic component (23) abuts against the bottom wall of the water stop cavity (211), and the other end of the elastic component (23) is connected to the water stop section (222) of the movable valve core (22); the movable valve core (22) slides in the water stop cavity (211) of the fixed valve core (21); when the flow guide section (221) of the movable valve core (22) coincide with the water inlet hole (212) of the fixed valve core (21), the water flow is enabled; when the elastic component (23) is reset, the water stop section (222) of the movable valve core (22) is driven to cover the water inlet hole (212) of the fixed valve core (21), and then the water flow is cut off.

Description

Automatic water stop joint Technical Field

The invention relates to the technical field of water pipe connectors, and in particular to an automatic water-stop connector.

Background technique

Water pipe joints are a common component used to connect water pipes. In daily life and production, in order to meet water needs, various water pipe joints are used in the installation of water pipe lines. In order to prevent water leakage due to accidental falling off of the water pipe joints during use, water stop joints can be used for the water pipe joints.

The Chinese patent announcement number is CN207454863U, and its name is an automatic water-stopping water outlet nozzle. The patent discloses a water-stopping water outlet nozzle, which has a water hole on the upper side of the water-stopping core, and realizes water flow control by separating or combining the water-stopping core and the sealing silicone pad. However, this scheme has the following disadvantages: 1. Relying on the action of water flow, the main pipe body is reset downward, and the water-sealing plug and the sealing silicone pad are re-sealed, so that the water outlet nozzle realizes automatic water stopping. If the water flow is small, it will cause poor sealing and water leakage; 2. The sealing rubber pad is easily deformed during assembly, so that friction and obstruction will occur when the water-stopping core passes through the sealing silicone pad, resulting in low water-stopping sensitivity, and even causing the water-stopping core to be directly stuck inside the sealing rubber pad and unable to realize the automatic water-stopping function; 3. In addition, the opening of the water-stopping hole is small, resulting in a small water flow rate.

The Chinese patent publication number is CN210398052U, and its name is automatic water-stop joint device. This patent discloses an automatic water-stop joint device, but the scheme has the following disadvantages: 1. The water-stop core falls rapidly under the action of gravity, which further causes the internal and external pressure difference of the fluid to change, causing the water-stop core to accelerate forward under the push of water pressure until the first sealing ring and the sealing stopper fall above the water-stop cavity, so that no water enters the water hole, and water is stopped. 2. Due to the gravity of the water-stop core, the first sealing ring and the sealing stopper fall to the water-stop core above the water-stop cavity, which is prone to jamming and the reliability is not high.

In summary, the existing waterstop joints have the problems of low waterstop sensitivity, complex structure, low reliability and poor waterstop effect, and cannot meet the use requirements.

technical problem

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Technical Solutions

In order to solve the above problems, the present invention provides an automatic water stop joint.

The technical solution of the present invention is achieved in this way:

The present invention discloses an automatic water-stop joint, comprising a joint pipe body and a water-stop valve core arranged in the joint pipe body, wherein one end of the joint pipe body is provided with a water inlet and the other end is provided with a water outlet, and the water-stop valve core comprises: a fixed valve core, a movable valve core and an elastic component;

The fixed valve core is cylindrical, and a water stop cavity with one end open is provided along the axial direction of the fixed valve core, and a water inlet hole for connecting the water stop cavity with the water inlet of the joint pipe body is provided on the side wall of the fixed valve core;

The moving valve core is arranged in the water stop cavity of the fixed valve core, and the moving valve core comprises an integrally formed flow guide section and a water stop section;

The elastic component is arranged in the water stop cavity, one end of the elastic component abuts against the bottom wall of the water stop cavity, and the other end is connected to the water stop section of the moving valve core;

The moving valve core slides in the water stop cavity of the fixed valve core. When the guide section of the moving valve core corresponds to the water inlet hole of the fixed valve core, the water flow is conducted. When the elastic component is reset, the water stop section of the moving valve core is driven to cover the water inlet hole of the fixed valve core, and the water flow is cut off.

Furthermore, there are multiple water inlet holes arranged on the side wall of the fixed valve core, and the multiple water inlet holes are distributed at intervals around the fixed valve core.

Furthermore, a flow guide hole corresponding to the water inlet hole of the fixed valve core is arranged on the circumferential side of the flow guide section of the movable valve core, and the flow guide hole is communicated with the water outlet of the joint pipe body.

Furthermore, a receiving groove for installing an elastic component is provided at the bottom of the water-stopping cavity of the fixed valve core, and a step for sliding limiting of the movable valve core is provided at the connection between the receiving groove and the water-stopping cavity.

Furthermore, a groove is provided on the end of the water stop section of the moving valve core, and the groove is used for being inserted and connected with the elastic component.

Furthermore, an outer side of the end of the fixed valve core close to the opening of the water stop cavity is provided with an external thread, and the external thread is connected to an internal thread arranged on the inner wall of the joint pipe body.

Furthermore, a first sealing ring is provided at the outer side of each of the two ends of the water stop section, and the outer ring of the first sealing ring is in contact with the inner wall of the water stop cavity.

Furthermore, a second sealing ring is provided on the inner wall of the water stop cavity of the fixed valve core.

Furthermore, it also includes a plug-in mechanism, which includes a plug-in piece arranged on the water outlet of the joint pipe body, a C-shaped clamping ring is sleeved on the plug-in piece, and a clamping claw is arranged between the plug-in piece and the fixed valve core.

Furthermore, the clamping claw is in the shape of a circular ring, and tongue pieces arranged in a circular shape are arranged inside the circular ring.

The automatic water stop joint of the present invention has the following beneficial technical effects:

Different from the water stop joints in the prior art, which have complex structures, low sensitivity, poor reliability and inconvenient use, the advantages of the automatic water stop joint provided by the present invention are: the water stop valve core adopts a fixed valve core and a moving valve core, and is arranged between the fixed valve core and the moving valve core and is reset and driven by an elastic component. When the automatic water stop joint of the present invention is inserted and connected with the connecting pipe, the moving valve core is pushed to slide forward, the elastic component is compressed, and the guide section of the moving valve core is connected to the water inlet hole of the fixed valve core to achieve water flow conduction; when the connecting pipe body falls off from the automatic water stop joint, the elastic component is reset, pushing the moving valve core to slide backward, and the water stop section of the moving valve core is sealed on the water inlet hole of the fixed valve core to achieve complete water stop. The present invention has a simple design structure and is easy to assemble. Under the reset drive of the elastic component, the moving valve core is not easy to get stuck, has high stability and sensitivity, good water stop effect, effectively saves water resources, and is more environmentally friendly.

Beneficial Effects

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BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

FIG1 is a schematic structural diagram of Embodiment 1 of the present invention;

FIG2 is a schematic diagram of the exploded structure of Embodiment 1 of the present invention;

FIG3 is a schematic structural diagram of a fixed valve core in Embodiment 1 of the present invention;

FIG4 is a schematic structural diagram of a movable valve core in Embodiment 1 of the present invention;

FIG5 is a schematic diagram of the structure of the claw in Embodiment 1 of the present invention;

FIG6 is a schematic diagram of the structure of the plug-in member in Embodiment 1 of the present invention;

FIG7 is a schematic diagram of a use state of Embodiment 1 of the present invention;

FIG8 is a second schematic diagram of the use state of embodiment 1 of the present invention;

FIG9 is a third schematic diagram of the use state of embodiment 1 of the present invention;

FIG. 10 is a schematic structural diagram of Embodiment 2 of the present invention.

In the figure, automatic water-stop joint 100, connecting pipe 200, joint body 1, water inlet 11, water outlet 12, internal thread 13, water-stop valve core 2, fixed valve core 21, water-stop cavity 211, water inlet hole 212, accommodating groove 213, step 214, external thread 215, moving valve core 22, guide section 221, water-stop section 222, guide hole 223, groove 224, first annular groove 225, elastic component 23, first sealing ring 24, second sealing ring 25, plug-in mechanism 3, plug-in piece 31, annular plate 311, notch groove 312, C-type clamping ring 32, claw 33, tongue piece 331.

Best Mode for Carrying Out the Invention

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Example

Please refer to Figures 1 to 6, an automatic water-stop joint includes a joint body 1, which is T-shaped, with a water inlet 11 at one end and a water outlet 12 at the other end. A water-stop valve core 2 is provided in the joint body 1.

The water stop valve core 2 includes a fixed valve core 21 , a movable valve core 22 and an elastic component 23 .

The fixed valve core 21 is cylindrical, and a water stop cavity 211 is axially arranged on the fixed valve core 21. One end of the water stop cavity 211 is an open structure. A water inlet hole 212 is arranged on the side wall of the fixed valve core 21. One end of the water inlet hole 212 is connected to the water stop cavity 211, and the other end of the water inlet hole 212 is connected to the water inlet 11 of the joint pipe body 1. Further, there are multiple water inlet holes 212 arranged on the side wall of the fixed valve core 21, and they are distributed at intervals around the cylindrical fixed valve core 21.

The movable valve core 22 is arranged in the water stop cavity 211 of the fixed valve core 21, and the fixed valve core 21 slides relatively along the axial direction of the water stop cavity 211. The movable valve core 22 is cylindrical. The movable valve core 22 includes a guide section 221 and a water stop section 222. The guide section 221 and the water stop section 222 are integrally formed, and the outer diameter of the guide section 221 and the outer diameter of the water stop section 222 are the same; guide holes 223 corresponding to the water inlet holes 212 of the fixed valve core 21 are arranged on the circumferential side of the guide section 221, and the number of the guide holes 223 is the same as the number of the water inlet holes 212, and the guide holes 223 are connected to the water outlet 12 of the joint pipe body 1.

The elastic component 23 is arranged in the water stop cavity 211 of the fixed valve core 21, one end of the elastic component 23 abuts against the bottom wall of the water stop cavity 211, and the other end is connected to the water stop section 222 of the moving valve core 22. The elastic component 23 is preferably a spring. When the moving valve core 22 slides in the water stop cavity and compresses the elastic component 23, the guide section 221 of the moving valve core 22 corresponds to the water inlet hole 212 of the fixed valve core 21, thereby achieving water flow conduction; when the moving valve core 22 is reset by the elastic component 23, the water stop section 222 of the moving valve core 22 covers the water inlet hole 212 of the fixed valve core 21, thereby achieving water flow cutoff.

As a preferred embodiment, a receiving groove 213 for receiving and installing the elastic component 23 is provided at the bottom of the water stop chamber 211 of the fixed valve core 21. The inner diameter of the receiving groove 213 is smaller than the inner diameter of the water stop chamber 211. A step 214 is provided at the connection between the receiving groove 213 and the water stop chamber 211. The step 214 is used to limit the position of the movable valve core 22 when it slides in the water stop chamber 211. In order to better install the elastic component 23, a groove 224 is provided on the end of the movable valve core 22. The groove 224 is used to be inserted and connected with the elastic component 23. Therefore, one end of the elastic component 23 is connected to the groove 224, and the other end is abutted against the bottom wall of the receiving groove 213.

As a preferred embodiment, an external thread 215 is provided on the outer wall of the end of the opening of the fixed valve core 21 close to the water stop chamber 211, and an internal thread 13 is provided on the inner wall of the joint pipe body 1 close to the water outlet 12. The external thread 215 of the fixed valve core 21 is connected to the internal thread 13 of the joint pipe body 1 through a threaded seal.

As another preferred embodiment, a first annular groove 225 is provided on the outer side of each of the two ends of the water stop section 222 of the movable valve core 22, and a first sealing ring 24 is provided in the first annular groove 225. The outer ring of the first sealing ring 24 abuts against the inner wall of the water stop cavity 211 of the fixed valve core 21. When the water stop section 222 of the movable valve core 22 covers the water inlet hole 212 of the fixed valve core 21 to stop water, the first sealing rings 24 at both ends of the water stop section 222 can play a better sealing role.

A second sealing ring 25 is arranged between the inner wall of the water stop cavity 211 of the fixed valve core 21 and the outer wall of the movable valve core 22. There are two second sealing rings 25 arranged side by side, and the sealing effect is good.

The automatic water-stop joint of the present invention further comprises a plug-in mechanism 3 , which is arranged in the water outlet of the joint body 1 . The plug-in mechanism 3 comprises a plug-in piece 31 , a C-shaped clamp ring 32 and a clamp claw 33 .

Among them, the plug-in component 31 includes an annular plate 311 extending radially outward from the bottom and a notch groove 312 axially arranged at the top. The annular plate 311 is located outside the water outlet 12 of the joint pipe body 1. The outer diameter of the annular plate 311 is larger than the outer diameter of the water outlet 12. The C-shaped snap ring 32 is sleeved on the main body of the plug-in component 31. The C-shaped snap ring 32 is used to connect the plug-in component 31 to the joint pipe body 1. The main body of the plug-in component 31 and the C-shaped snap ring 32 are both elastic in the radial direction, which facilitates the installation of the plug-in component 31 and can prevent the plug-in component 31 from slipping out of the water outlet 12 of the joint pipe body 1 and falling off.

A claw 33 is provided between the plug-in component 31 and the fixed valve core 2. The claw 33 is in a circular ring shape, and a ring-shaped tongue piece 331 is provided inside the circular ring. After the claw 33 is installed, the free end of the tongue piece 331 extends toward the fixed valve core 2. The claw 33 is used to lock the external connecting pipe.

When in use, as shown in FIG. 7 , the water pipe joint used to achieve water pipe connection includes: an automatic water stop joint 100 and a connecting pipe 200 that is pluggable and connected to the automatic water stop joint 100 .

Water flow conduction, as shown in FIG8 , when the connecting pipe 200 is inserted inward from the water outlet 12 of the joint pipe body 1, the inner circle of the plug-in member 31 expands radially elastically, and the port of the connecting pipe 200 passes through the plug-in member 31 and the claw 33 in sequence, and then abuts against the guide section 221 of the moving valve core 22, pushing the guide hole 223 of the guide section 221 to correspond to the water inlet hole 212 of the fixed valve core 21 to complete the water flow conduction. At this time, the connecting pipe 200 is locked due to the elastic reset of the plug-in mechanism 3, and the elastic component 23 is compressed by the thrust. The water flow path during conduction is: water inlet 11 → water inlet hole 212 → guide section 221 → guide hole-223 → water outlet 12.

As shown in FIG9 , water flow stopping is performed by first pressing the annular plate 311 of the plug-in component 31 toward the water outlet 12 of the joint body 1, so that the main body of the plug-in component 31 and the inner ring of the C-shaped retaining ring 32 are radially elastically expanded; then, the tongue 331 of the claw 33 is separated from the outer side of the connecting pipe 200 by the plug-in component 31, and the connecting pipe is pulled outward from the water outlet 12 of the joint body 1. Under the resetting action of the elastic component 23, the movable valve core 22 pushes the water stopping section 222 of the movable valve core 22 to completely cover the water inlet hole 212 of the fixed valve core 21, thereby completing automatic water stopping.

The advantages of an automatic water-stop joint provided by the present invention are: it automatically stops water under the reset drive of the elastic component, the moving valve core is not prone to jamming, it has high stability and sensitivity, good water-stopping effect, is easy to install on the wall, effectively saves water resources, and is more environmentally friendly.

Example

Please refer to Figures 10 and 11. Most of the structures of the second embodiment are the same as those of the first embodiment, except that the structure of the joint pipe body 1a is different: the joint pipe body 1a is a straight-through structure, and the joint pipe body 1a includes a water inlet 11a at one end and a water outlet 12a at the other end. The water inlet 11a and the water outlet 12a are on the same straight line, which can meet the installation requirements of the automatic water stop joint.

The advantages of an automatic water-stop joint provided by the present invention are: simple design structure, easy assembly, automatic water stopping under the reset drive of the elastic component, the moving valve core is not prone to jamming, high stability and sensitivity, good water-stopping effect, effective saving of water resources, and more environmentally friendly.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Embodiments of the present invention

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Industrial Applicability

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Sequence Listing Free Content

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Claims (10)

An automatic water-stop joint, comprising a joint pipe body (1) and a water-stop valve core (2) arranged in the joint pipe body (1), wherein the joint pipe body (1) is provided with a water inlet (11) at one end and a water outlet (12) at the other end, and is characterized in that the water-stop valve core (2) comprises: a fixed valve core (21), a movable valve core (22) and an elastic component (23); The fixed valve core (21) is cylindrical, and a water stop cavity (211) with an open end is provided along the axial direction of the fixed valve core (21), and a water inlet hole (212) for connecting the water stop cavity (211) with the water inlet (11) of the joint pipe body (1) is provided on the side wall of the fixed valve core (21); The movable valve core (22) is arranged in the water stop cavity (211) of the fixed valve core (21), and the movable valve core (22) comprises an integrally formed flow guide section (221) and a water stop section (222); The elastic component (23) is arranged in the water stop cavity (211), one end of the elastic component (23) is in contact with the bottom wall of the water stop cavity (211), and the other end is connected to the water stop section (222) of the movable valve core (22); The movable valve core (22) slides in the water stop cavity (211) of the fixed valve core (21); when the flow guide section (221) of the movable valve core (22) corresponds to the water inlet hole (212) of the fixed valve core (21), water flow is conducted; when the elastic component (23) is reset, the water stop section (222) of the movable valve core (22) is driven to cover the water inlet hole (212) of the fixed valve core (21), and water flow is stopped. According to the automatic water stop joint described in claim 1, it is characterized in that there are multiple water inlet holes arranged on the side wall of the fixed valve core, and the multiple water inlet holes are distributed at intervals around the fixed valve core. The automatic water-stop joint according to claim 2, characterized in that a guide hole (223) corresponding to the water inlet hole (212) of the fixed valve core (21) is provided on the circumferential side of the guide section (221) of the movable valve core (22), and the guide hole (223) is connected to the water outlet (12) of the joint pipe body (1). The automatic water-stop joint according to claim 1 is characterized in that a receiving groove (213) for installing an elastic component (23) is provided at the bottom of the water-stop chamber (211) of the fixed valve core (21), and a step (214) for sliding limiting of the movable valve core (22) is provided at the connection between the receiving groove (213) and the water-stop chamber (211). The automatic water-stop joint according to claim 1 is characterized in that a groove (224) is provided on the end of the water-stop section (222) of the movable valve core (22), and the groove (224) is used for insertion and connection with the elastic component. The automatic water-stop joint according to claim 1 is characterized in that an outer side of the end of the fixed valve core (21) close to the opening of the water-stop chamber (211) is provided with an external thread (215), and the external thread (215) is connected to an internal thread (13) provided on the inner wall of the joint body (1). The automatic water-stop joint according to claim 1 is characterized in that a first sealing ring (24) is provided near the outer sides of both ends of the water-stop section (222), and the outer ring of the first sealing ring (24) abuts against the inner wall of the water-stop cavity (211). The automatic water-stop joint according to claim 1, characterized in that a second sealing ring (25) is provided on the inner wall of the water-stop cavity (211) of the fixed valve core (21). The automatic water-stop joint according to claim 1 is characterized in that it also includes a plug-in mechanism (3), the plug-in mechanism (3) includes a plug-in piece (31) provided on the water outlet (12) of the joint body (1), a C-shaped clamping ring (32) is sleeved on the plug-in piece (31), and a clamping claw (33) is provided between the plug-in piece (31) and the fixed valve core (21). The automatic water-stop joint according to claim 9 is characterized in that the clamping claw (33) is in the shape of a ring, and a ring-shaped tongue (331) is arranged inside the ring.