TWI498147B - Water filter system rack device - Google Patents

Description

Water filter system rack device

The present invention relates to a water filter device, and more particularly to a water filter system frame device.

Water filtration equipment mainly uses physical or chemical methods to filter impurities in water to achieve water purification effect. To achieve different water purification effects, different types of filter cores are needed. For example, activated carbon filter can be used for simple filtration, if it is located If the water quality of the area is hard water, a combination of filter cores such as reverse osmosis can be used to obtain a cleaner water quality. Therefore, users can choose different types of filter cores according to their own needs.

Referring to Figure 40, the filter system is designed for single-ended inlet and outlet according to various types of requirements, or a water inlet with a water outlet, or multiple inlets with multiple outlets. Use only a single filter, or use multiple filter cores to form a composite combination, which is a system A to integrate the entire water filtration system pipeline, due to the location and quantity of each filter inlet and outlet, and the detector The positions of the pipes B and C connected internally must be crossed and cross-connected, resulting in a complicated structure inside the system A.

In addition, the manufacturer sets a plurality of stacked baffles in the system frame A to facilitate the integration of the pipeline, however, the baffle itself has low pressure resistance. It is difficult to meet the needs of various water filters, and it is difficult to integrate the flow controller or the pressure detector to control the electronic device by using the baffle. The lack is necessary for improvement.

In order to solve the problem that the pipeline design in the existing water filter system frame is complicated, resulting in inconvenient installation and low uniformity, the main object of the present invention is to propose a water filter system rack device that can solve the problems of the prior art.

The present invention solves the prior art problem of a water filter system rack device, comprising: a body; one or more outer fixing sleeves which are hollow and connected to the frame body; and one or more inner supports The card holder is disposed in the outer fixing sleeve, and each inner support comprises a body, a plurality of pipeline structures, one or more fixing piece openings, and one or more fixing pieces, wherein the system is disposed in the outer fixing sleeve Each pipeline structure is provided with a top portion of the inner support and communicates with the space in the body, and the pipeline structure is in communication with the pipeline hole of the frame body, the opening of the fixing piece penetrates the wall surface of the body, and the fixing piece is detachably mounted It is disposed at the opening of the fixing piece and includes a joint portion, and the joint portion of the fixing piece protrudes from the inner side of the fixing piece and faces the middle of the body.

The water filter system rack device, wherein each inner support and the corresponding outer fixing sleeve are mutually engaged with the matching clamping groove and the clamping piece, wherein the outer fixing sleeve is provided with a In the above clamping groove, the locking groove is recessed on the inner side of the outer fixing sleeve and located below the opening of the fixing piece, and the inner supporting body is provided with more than one retaining groove and more than one clamping piece, The groove is recessed on the outer wall of the inner support and communicates with the lower portion of the opening of the fixing piece, and the clamping piece is disposed in the retaining groove and has radial elasticity with respect to the inner support, and is blocked by the locking. Between the groove and the groove.

The water filter system rack device, wherein each inner support and the corresponding outer fixing sleeve are further engaged with each other by a matching engagement recess and a card bump, wherein the outer sleeve There are more than one card-shaped bumps, and the card-shaped bumps are protruded from the inner side of the outer fixing sleeve, and the inner support is provided with more than one card-shaped concave points, and the concave points are recessed on the outer wall of the inner support And the card bumps are mutually interlocked.

The water filter system rack device, wherein each outer fixing sleeve is detachably coupled to the rack body.

The water filter system rack device, wherein each of the inner supports further includes a water shutoff switch disposed in one of the pipeline structures, the water shutoff switch being disposed in the pipeline structure and including a casing a switch body, a spring, two seal rings, and a casing upper cover, wherein the casing upper cover is assembled on the casing, and the casing and the casing upper cover are installed in the pipeline structure, the switch The main body is disposed in the casing and the upper cover of the casing, and the bottom protrudes from the casing, and the top protrudes from the casing upper cover, the spring is sleeved on the switch body, and the cover is attached to the switch and the switch Between the bodies, a sealing ring is sleeved on the switch body, and a gap between the switch body and the upper cover of the casing is selectively sealed, and another sealing ring is sleeved on the casing, and the casing is sealed and The gap between the pipe structures.

The water filter system rack device, wherein the joint portion of the fixing piece of the at least one inner support comprises one or more ribs, the ribs are circumferentially protruded on the inner side of the fixing piece; wherein the ribs are arranged in a step shape; to The joint portion of the fixing piece having one inner support includes one or more ring-shaped projections which are protruded inside the fixed piece.

The water filter system rack device, wherein each fixing piece further comprises at least one positioning point disposed on a side of the joint portion; the water filter system rack device, wherein each fixing piece further comprises a confirmation point, The protrusion is located on the inner side of the fixing piece and above the bonding part.

The enhancements that can be obtained by the technical means of the present invention are:

1. The system body is uniformly arranged in the frame body by using the frame body, so that the inner support can be provided with different pipe structures designed for the inlet and outlet according to requirements, so that the combination between the pipe and the pipe has more variability, so It can also improve its own pressure resistance and stability. In addition, since most of the system piping can be installed in the rack body, it is easy to install a flow controller, a pressure detector, etc. between the pipelines. Auxiliary control of the electronic device to meet the different needs of use, to achieve a neat system piping configuration.

2. The fixed piece can be separately installed on the body of the inner support, and the joint of the fixed piece needs to match the filter device of the corresponding structure, so the body of the same set body, the outer fixed sleeve and the inner support can be matched. A fixing piece having different bonding portions, and a fixing piece having different bonding portions can be matched with a filter device having different bonding rings to produce an identification effect, and in terms of manufacturing convenience, as long as different fixing pieces are independently produced, the rest Part of it does not have to be opened again, which can effectively reduce manufacturing costs.

3. Since the fixing piece and the frame body, the outer fixing sleeve and the inner supporting body can be separately manufactured, the fixing piece and the frame body, the outer fixing sleeve and the inner supporting body can be made of different materials according to different requirements. Different functions; in addition, because the fixing pieces can be manufactured separately, they are less susceptible to By limiting the mold opening, it is relatively easy to design the joints of the fixing sheets to have different directionalities and shapes as required.

"this invention"

10, 10O, 10Q‧‧ ‧ body

11‧‧‧

12‧‧‧pipe hole

14‧‧‧Substrate

15‧‧‧Flow controller

16‧‧‧floor

20‧‧‧ external fixing sleeve

21‧‧‧ inside

22‧‧‧ card slot

23‧‧‧Card bumps

24L‧‧‧Fixed ring

25M‧‧‧ fixed plate

26N‧‧‧Bump

27P‧‧‧ Groove

30‧‧‧ inner support

31‧‧‧Ontology

32, 32A to 32F‧‧‧ pipeline structure

33‧‧‧Fixed opening

34‧‧ ‧ chute

35‧‧‧Fixed tablets

351, 351A to 351H‧‧ ‧ joint

3511‧‧‧ Ribs

3512‧‧‧stop bars

3513, 3513C‧‧‧ anchor points

352‧‧‧ Confirmation point

353B‧‧‧Targeting point

353G‧‧‧ concave edge

36‧‧‧Card production

37‧‧‧Cards

40‧‧‧Water switch

41‧‧‧Shell

42‧‧‧Switch body

43‧‧‧ Spring

44‧‧‧Seal ring

45‧‧‧Shell cover

50‧‧‧ Filter device

51, 51A to 51H‧‧ ‧ joint

511‧‧‧ Ribs

52, 52B, 52C‧‧‧ anchor points

53G‧‧‧Flange

54‧‧‧ Filter media

55‧‧‧One-way spacer

56‧‧‧ Combination ring

57‧‧‧ Strengthening ring

58‧‧‧ filter housing

60‧‧‧ fixed seat

61‧‧‧Pressure pump

Prior Technology

A‧‧‧System Shelf

B‧‧‧ pipeline

C‧‧‧Wire

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an exploded perspective view of a preferred embodiment of the present invention.

Figure 2 is a partial exploded perspective view of a preferred embodiment of the present invention.

Figure 3 is a cross-sectional view of a preferred embodiment of the present invention.

4 to 9 are assembly flow charts of a preferred embodiment of the present invention.

10 and 11 are assembled views of a preferred embodiment of the present invention.

Figure 12 is a partial cross-sectional view showing another assembled internal system frame device and filter device.

13 to 17 are perspective exploded views of different fixing sheets in accordance with a preferred embodiment of the present invention.

Figure 18 is a perspective external view of a second preferred embodiment of the present invention.

Figure 19 is a partial perspective exploded view of a second preferred embodiment of the present invention.

20 to 25 are perspective views of different internal support forms of a preferred embodiment of the present invention.

Figure 26 is an exploded perspective view of a third preferred embodiment of the present invention.

Figure 27 is an exploded perspective view showing the arrangement of different pipelines in accordance with a third preferred embodiment of the present invention.

Figure 28 is a partial perspective view of Figure 27;

Figure 29 is a partial cross-sectional view of Figure 27 .

Figure 30 is a perspective view of a different seat of the present invention.

Figure 31 is a perspective view showing the appearance of a flow controller of the present invention.

Figure 32 is a perspective external view of another embodiment of the frame body.

Fig. 33 is an exploded perspective view showing the state of use of the rack body and the bottom plate of Fig. 32;

34 to 36 are perspective views of different external fixing sleeve forms of the present invention.

Figure 37 is a perspective view showing the appearance of different frame bodies of the present invention.

Figure 38 is a perspective external view of the different outer sleeve forms of the present invention.

Figure 39 is a perspective view showing the appearance of different frame bodies of the present invention.

Figure 40 is a perspective external view of a conventional water filter system rack.

In order to understand the technical features and practical effects of the present invention in detail, and in accordance with the contents of the specification, the following further describes the water filter system frame proposed by the present invention. A preferred embodiment of the device, as shown in FIGS. 1 through 3, includes a body 10, an outer sleeve 20, and an inner support 30.

The frame body 10 includes a body 11 and a plurality of pipe holes 12, wherein the seat body 11 is integrally formed, and the pipe hole 12 is formed in the seat body 11. The outer fixing sleeve 20 is hollow and connected to the bottom surface of the base body 11. The outer fixing sleeve 20 can be integrally connected to the seat body 11 or can be detachably combined with the seat body 11. The outer fixing sleeve 20 includes an inner side 21, two clamping grooves 22 and two locking protrusions 23, wherein the two clamping grooves 22 are circumferentially formed on the inner side 21 and are recessed by the wall of the outer fixing sleeve 20. The two clamping grooves 22 are disposed opposite to each other and close to the bottom end of the outer fixing sleeve 20, and the two clamping bumps 23 are respectively protruded on the inner side 21 and close to the bottom end of the outer fixing sleeve 20 to provide a positioning effect.

The inner support 30 is disposed in the outer fixing sleeve 20, and the inner support 30 includes a body 31, a pipeline structure 32, and two fixing pieces. The mouth 33, the two retaining grooves 34, the two fixing pieces 35, the two clamping pieces 36 and the two clamping points 37, wherein the body 31 has a tubular shape and an opening at the bottom, the top of the body 31 is closed, the tube The road structure 32 is disposed at the top of the body 31 and communicates with a space in the body 31. The pipeline structure 32 is connected with other structures such as a check valve or a flow control valve by using a water pipe, and the water pipe can also pass The pipe hole 12 of the frame body 10 is connected with other external structures, such as a pressurized pump or a water storage bucket, and the water pipe switch 40 is disposed in the pipe structure 32, and the two fixing piece openings 33 are oppositely The two walls of the body 31 are respectively recessed from the outer wall of the body 31 and are respectively located below the two fixing piece openings 33 and communicate with the fixing piece. The bottom of the opening 33, and the two retaining grooves 34 respectively engage the two clamping grooves 22; the two fixing pieces 35 are respectively detachably disposed at the two fixing piece openings 33, and each fixing piece 35 includes a joint portion 351 and a confirmation point 352. The joint portion 351 is protruded from the inner side of the fixing piece 35 and faces In the middle of the body 31, the joint portion 351 includes three ribs 3511, a stop strip 3512 and two positioning points 3513. The three ribs 3511 are circumferentially protruded from the inner side of the fixing piece 35, and the stopping strip 3512 is connected to the end of the three ribs 3511. The two positioning points 3513 are recessed on the top surface of the two ribs 3511. The confirmation point 352 is protruded inside the fixing piece 35 and is located above the joint portion 351. The confirmation point 352 and the joint portion 351 have a confirmation interval. The clamping plates 36 are respectively disposed at the two retaining grooves 34, and the arc of the locking piece 36 is larger than the arc of the retaining groove 34. Therefore, when the locking piece 36 is disposed in the retaining groove 34 in the relaxed state, it protrudes from the retaining groove 34. And partially embedded in the card slot 22, so that the card piece 36 can be locked between the outer fixing sleeve 20 and the inner support 30, so that the inner support 30 does not detach The outer fixing sleeve 20, the two clamping recesses 37 are protruded from the outer wall of the inner support 30 and are locked in the respective locking bumps 23, so that the inner support 30 cannot rotate relative to the outer fixing sleeve 20.

Please refer to FIG. 4 and FIG. 5 for the installation process. When the system rack device is installed, the fixing pieces 35 are placed on the fixing piece openings 33, and the card forming pieces 36 are placed in the respective retaining grooves 34. Referring to FIG. 4 and FIG. 6 to FIG. 9, each of the card sheets 36 is pressed into the respective retaining grooves 34, and the inner support members 30 are placed in the outer fixing sleeves 20, so that The card sheet 36 is correspondingly and partially embedded in each of the clamping slots 22, and the installation of the system rack device is completed at this time. Referring to FIG. 2 and FIG. 4, the system rack device is installed on the wall. The surface or the water dispenser is further provided with a matching filter device 50. The top of the filter device 50 includes a coupling ring 56. The outer side of the coupling ring 56 is provided with a joint portion 51 and a positioning point 52, and the joint portion 51 includes three The circumferentially protruding ribs 511, the positioning points 52 are respectively protruded from the coupling ring 56, and located on one side of the joint portion 51, the filter device 50 is inserted into the system frame device by the opening at the bottom of the inner support 30 And rotating at the same time, the ribs 511 of the joint portion 51 are inserted between the ribs 351 of the fixing piece 35, and when the filter device 50 is rotated to The positioning points 52 of the filter device 50 are respectively engaged with the positioning points 3513 of the fixing piece 35 to prevent the teeth from being released, so that the combination of the filter device 50 and the system frame device can be more stable and not easily separated, so that the filter core is When the device 50 is in use, it is not easy to be deflected by the water pressure and released from the system rack device due to excessive water pressure.

In addition, the system rack device and the filter element device 50 serve as a foolproof use in addition to the structurally matched joint portions 51 and 351. The confirmation point 352 of the fixed piece 35 serves as a reconfirmation role, see FIG. As shown, it is a fixing piece 35 of another structure and a coupling ring 56. When the confirmation gap between the confirmation point 352 and the joint portion 351 can be inserted by the rib 51 of the filter device 50, it indicates the system rack device and the filter device. 50 is matched, please refer to FIG. 11 again, when the confirmation interval between the confirmation point 352 and the joint portion 351 cannot be inserted by the rib 51 of the filter device 50, even the joint portion 351 of the system rack device and the filter device The structure of the joint portion 51 of the 50 is matched, but it is still indicated that the filter device 50 cannot be mounted on the system frame, and the foolproof effect can be further achieved. The joint portions 351 and 51 of the same structure can also be used with the check points 352 of different heights. To make different system rack devices and filter devices 50, the manufacturing cost can be effectively saved. FIG. 12 discloses that the filter device 50 is installed in another system rack device with different internal structures.

Referring to FIG. 13 to FIG. 17 , the structure of the joint portion 351A of the fixing piece 35 and the joint portion 51A of the joint ring 56 may be replaced with each other, or the joint portion 51B of the joint ring 56 may be spiral. And comprising a positioning point 52B formed on the top surface of the end of the fixing piece 35, the joint portion 351B of the fixing piece 35 is a circumferentially protruding rib and includes an positioning point 353B, and the positioning point 353B of the fixing piece 35 is convexly disposed at One side of the fixing piece 35 is matched with the positioning point 52B of the filter device 50, or the coupling portion 51C of the coupling ring 56 may be a circumferential rib and has two protruding positioning points 52C. The joint portion 351C of the sheet 35 is a matching circumferential projection and has a protruding positioning point 3513C. Alternatively, the joint portion 51D of the coupling ring 56 is a circumferentially tapered rib and has a convex shape. a positioning point 52D, the joint portion 351D of the fixing piece 35 is a matching tapered rib, and has two protruding positioning points 3513D, or The joint portion 51E of the joint ring 56 is a U-shaped rib, and the joint portion 351E of the fixing piece 35 is a matching T-shaped rib regardless of the joint portion of the fixing piece 35 and the joint ring 56. The type of 51 is such that the filter device 50 is rotated and then coupled to the system frame device. Therefore, the joint portion 51 of the fixing piece 35 and the coupling ring 56 is extended along the circumferential direction thereof.

Referring to FIG. 18 and FIG. 19, the system rack device may further include two outer fixing sleeves 20 and two inner supporting brackets 30. The rack body 10 further includes a base plate 14, wherein the base plate 14 is detachably mounted. In the frame body 10, the two outer fixing sleeves 20 are detachably disposed at the substrate 14 and include two fulcrums 24, and the two fulcrums 24 are symmetrically disposed on both sides of the top of the outer fixing sleeve 20 and abut against the substrate 14. Therefore, the outer fixing sleeve 20 can be yawed with respect to the front and rear of the substrate 14 by using the two pivots 24 as the rotating shaft, and the two inner supporting brackets 30 are respectively disposed in the two outer fixing sleeves 20, and when the filter device 50 needs to be removed and replaced, The filter device 50 can be swung in the direction of the user, so that the user can easily remove the filter device 50 at an angle that is easy to apply force.

The pipe structure 32 of the inner support 30 has different designs according to different types and combinations of the filter device and the pipe holes 12 of the frame body 10. FIG. 20 to FIG. 25 disclose pipes of different design types. The road structures 32A to 32F are designed with different inlet and outlet ports, so that the system piping configuration can be more diverse and concise.

Referring to FIG. 26, the system rack device may further include three outer fixing sleeves 20 and three inner supporting bases 30. The pipeline structures 32 on the inner supporting bases 30 may be connected to each other by water pipes, and the rack body 10 may also be Contains one a fixing base 60, wherein the fixing base 60 is provided with a pressure pump 61, and the pressure pump 61 is connected to the pipeline structure 32 of the inner support 30 through which the water is pumped through the water pipe of the pipeline hole 12, The pipeline structure 32 on each inner support 30 is matched with each other, and the complicated pipelines can be designed on the same plane, so that the variability of the pipeline is increased, and the pressure resistance and stability are better than the existing deflectors. And the desired electronic device can be easily installed in the rack body 10 to meet various use requirements.

Referring to FIG. 27, the pipe hole 12 of the frame body 10 is similar to the pipe hole 12 shown in FIG. 26, but is connected to the pipeline structure 32 of the body 31 in a different arrangement. Referring to FIG. 28, a water shutoff switch 40 is disposed in the pipeline structure 32. The water shutoff switch 40 includes a casing 41, a switch body 42, a spring 43, two seal rings 44, and a casing cover. 45, wherein the housing upper cover 45 is assembled on the housing 41, the switch body 42 is disposed in the housing 41 and the housing upper cover 45, and the bottom protrudes from the housing 41, and the top protrudes from the housing The upper cover 45 is disposed on the switch body 42 and is supported between the switch body 42 and the upper cover 45 of the housing. A sealing ring 44 is sleeved on the switch body 42 and is selectively sealed. a gap between the switch body 42 and the upper cover 45 of the casing, another seal ring 44 is sleeved on the casing 41, and a gap between the casing 41 and the pipe structure 32 is sealed, when the filter device 50 When installed in the body 31, the filter device 50 will abut the switch body 42 to displace the switch body 42 upwards, and the water can be The space between the switch body 42 and the housing 41 flows. When the filter device 50 is removed from the body 31 and is replaced, the spring 43 moves the switch body 42 downward by the elastic force to make the water switch. 40 seals the water with a sealing ring 44 The space that can be left, so that when the filter device 50 is detached from the body 31, water can be prevented from leaking out of the pipeline.

Referring to FIG. 29, each filter device 50 is provided with a filter material 54 having a different structure for different filtering effects. The filter device 50 may further be provided with a unidirectional spacer 55, the unidirectional spacer. 55 can be made of elastic rubber material, which has the function of one-way blocking, that is, when water passes through the one-way spacer 55, it has to flow in a single direction, and when it is reflowed from the other direction, it is subjected to The unidirectional spacer 55 is blocked so that water can be prevented from flowing out when the filter device 50 is removed.

As shown in FIG. 30, the base 11 can be designed with different outer sleeves 20, as shown in FIG. 31. The rack body 10 can further be provided with a flow controller 15 disposed on the base 11. One side and the pipeline arrangement between the pipeline hole and the pipeline structure for flow control purposes, as shown in FIG. 32 and FIG. 33, a bottom plate 16 can also be used to connect the outer fixing sleeve 20 disposed above and below. The filter device 50 can have a plurality of configuration positions, and the filter device 50 further includes a reinforcing ring 57 disposed between the filter housing 58 and the outer fixing sleeve 20 to increase the strength to prevent cracking. .

FIG. 24 to FIG. 39 disclose the outer fixing sleeve and the frame body of different design types. The outer fixing sleeve 20L further includes a fixing ring 24L, which can be disposed on the cylinder or the outer fixing sleeve 20M. Further comprising a fixing plate 25M, the outer fixing sleeve 20M is mounted on a plate body, or the outer fixing sleeve 20N further comprises two symmetrically disposed protrusions 26N, or the frame body 10O is a tube The road hole 12 is disposed on the side wall, or the outer fixing sleeve 20P is further provided with two recesses 27P, or The system rack device is provided with another form of the frame body 10Q.

10‧‧‧ body

11‧‧‧

12‧‧‧pipe hole

20‧‧‧ external fixing sleeve

21‧‧‧ inside

22‧‧‧ card slot

23‧‧‧Card bumps

30‧‧‧ inner support

31‧‧‧Ontology

32‧‧‧Pipe structure

33‧‧‧Fixed opening

34‧‧ ‧ chute

35‧‧‧Fixed tablets

351‧‧‧Combination Department

352‧‧‧ Confirmation point

36‧‧‧Card production

37‧‧‧Cards

Claims (10)

A water filter system rack device includes: a body; one or more outer fixing sleeves that are hollow and connected to the frame body; and one or more inner supports that are snap-fitted on the outer fixing sleeve The inner support comprises a body, a plurality of pipeline structures, one or more fixing piece openings, and one or more fixing pieces, wherein the system is clamped in the outer fixing sleeve, and each pipeline structure is provided with an inner support The top of the seat is connected to the space in the body, and the opening of the fixing piece penetrates through the wall surface of the body. The fixing piece is detachably mounted at the opening of the fixing piece and includes a joint portion, and the joint portion of the fixing piece is convexly disposed on the inner side of the fixing piece And toward the middle of the body. The water filter system rack device of claim 1, wherein each of the inner support and the corresponding outer fixed sleeve are mutually engaged with the engaging groove and the clamping piece, wherein the outer fixing sleeve There are more than one card slot, the card slot is recessed on the inner side of the outer sleeve, and is located below the opening of the fixing piece, and the inner support is provided with more than one retaining groove and more than one card piece. The retaining groove is recessed on the outer wall of the inner support and communicates with the lower part of the opening of the fixing piece and is disposed at the clamping groove, the clamping piece is disposed in the retaining groove and has radial elasticity relative to the inner support, and blocks the card Between the groove and the groove. The water filter system rack device of claim 2, wherein each of the inner support bases and the corresponding outer fixed sleeves are further engaged with each other by a matching engagement recess and a carding bump, wherein The outer fixing sleeve is provided with more than one card-shaped bump, the card-shaped bump is protruded on the inner side of the outer fixing sleeve, and the inner support is provided with more than one card-shaped concave point, and the concave portion is recessed. Support The outer wall is interlocked with the carding bumps. The water filter system rack device of claim 3, wherein each outer fixing sleeve is detachably coupled to the rack body. The water filter system rack device of claim 4, wherein each of the inner supports further comprises a water shutoff switch disposed in one of the pipeline structures, the water shutoff switch being disposed within the pipeline structure and including a casing, a switch body, a spring, two seal rings and a casing upper cover, wherein the casing upper cover is assembled on the casing, and the casing and the casing upper cover are installed in the pipeline structure The switch body is disposed in the housing and the upper cover of the housing, and the bottom protrudes from the housing, and the top protrudes from the upper cover of the housing, the spring is sleeved on the switch body, and the cover is supported on the cover Between the switch body and a switch body, a sealing ring is sleeved on the switch body, and a gap between the switch body and the upper cover of the casing is selectively sealed, and another sealing ring is sleeved on the casing, and the a gap between the housing and the piping structure. The water filter system rack device of claim 5, wherein the joint portion of the fixing piece of the at least one inner support comprises one or more ribs, and the ribs are circumferentially protruded inside the fixing piece. The water filter system rack device of claim 6, wherein the ribs are arranged in a stepped manner. The water filter system rack device of claim 5, wherein the joint portion of the fixing piece of the at least one inner support comprises one or more ring-shaped projections protruding from the inner side of the fixed piece. The water filter system rack device of any one of claims 1 to 8, wherein each of the fixing pieces further includes at least one positioning point disposed at a side of the joint. The water filter system rack device of any one of claims 1 to 8, wherein each of the fixing pieces further includes a confirmation point protruding from the inner side of the fixing piece and above the joint portion.