Floating type waterproof valve

Abstract

A floating type waterproof valve comprises a shell, a valve part arranged on the shell, a pivot shaft, a first valve seat assembly and a second valve seat assembly. The valve part comprises a first arc-shaped face and a second arc-shaped face opposite to the first arc-shaped face. The first valve seat assembly comprises a first valve seat, a first blocking piece and a first elastic piece clamped between the first valve seat and the first blocking piece. The first elastic piece can elastically deform so that the first valve seat can move in the axial direction of the shell relative to the first blocking piece. The first valve seat is provided with a first sealing face matched with the first arc-shaped face. The second valve seat assembly comprises a second valve seat, and the second valve seat is provided with a second sealing face matched with the second arc-shaped face. The valve part is supported between the first valve seat and the second valve seat, and the valve part can float relative to the pivot shaft in the radial direction of the shell.

Description

TECHNICAL FIELD

[0001] The utility model relates to a floating type waterproof valve and belongs to the technical field of engine exhaust system. BACKGROUND

[0002] With the continuous development of automobiles, vehicles need to wade in some extreme conditions. When the vehicle wades, water will enter the interior through the exhaust system of the vehicle, which can easily cause damage to related parts.

[0003] As a part that can block water from entering the vehicle interior through the exhaust system, the waterproof valve is being paid more and more attention.

[0004] However, the waterproof valve arranged in the exhaust system needs to be able to withstand high temperature and needs to be able to reliably close the exhaust system to prevent water from flowing in when the vehicle wades, and the waterproof valve in the related art still has room for improvement. SUMMARY

[0005] The utility model discloses a floating type waterproof valve with improved structure.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a floating type waterproof valve, which comprises a shell, a valve part arranged in the shell, a pivot shaft capable of directly or indirectly driving the valve part to rotate between an open position and a closed position, a first valve seat assembly matched with one side of the valve part, and a second valve seat assembly matched with the other side of the valve part; the valve part comprises a first arc surface and a second arc surface opposite to the first arc surface; the first valve seat assembly comprises a first valve seat, a first baffle and a first elastic member clamped between the first valve seat and the first baffle; the first elastic member can be elastically deformed to enable the first valve seat to move along the axial direction of the shell relative to the first baffle, and the first valve seat is provided with a first sealing surface matched with the first arc surface; the second valve seat assembly comprises a second valve seat provided with a second sealing surface matched with the second arc surface; the valve part is supported between the first valve seat and the second valve seat, and the valve part can float along the radial direction of the shell compared with the pivot shaft.

[0007] As a further improved technical scheme of the utility model, the second valve seat assembly comprises a second baffle and a second elastic member clamped between the second valve seat and the second baffle; the second elastic member can be elastically deformed to enable the second valve seat to move along the axial direction of the shell relative to the second baffle.

[0008] As a further improved technical scheme of the present utility model, one end of the first elastic member is welded and fixed with the first valve seat, and the other end of the first elastic member is welded and fixed with the first blocking piece.

[0009] As a further improved technical scheme of the present utility model, one end of the first elastic member is welded and fixed with the first valve seat, and the other end of the first elastic member is welded and fixed with the first blocking piece.

[0010] As a further improved technical scheme of the present utility model, the first valve seat is provided with a first horn mouth facing the valve part, and a first sealing surface of the first valve seat is exposed in the first horn mouth, and the first sealing surface is a conical surface.

[0011] As a further improved technical scheme of the present utility model, one end of the first elastic member is welded and fixed with the first valve seat, and the other end of the first elastic member is welded and fixed with the first blocking piece.

[0012] As a further improved technical scheme of the present utility model, one end of the first elastic member is welded and fixed with the first valve seat, and the other end of the first elastic member is welded and fixed with the first blocking piece.

[0013] As a further improved technical scheme of the present utility model, the second valve seat is provided with a second horn mouth facing the valve part, and a second sealing surface of the second valve seat is exposed in the second horn mouth, and the second sealing surface is a conical surface.

[0014] As a further improved technical scheme of the present utility model, the first valve seat assembly and the second valve seat assembly are symmetrically arranged on both sides of the pivot shaft along the axial direction of the shell.

[0015] As a further improved technical scheme of the present utility model, the shell comprises an inner cavity, and the valve part is arranged in the inner cavity; the valve part comprises a spherical surface, and the first sealing surface and the second sealing surface are arranged on the spherical surface, and the spherical surface is further provided with a first opening penetrating one side of the valve part and a second opening penetrating the other side of the valve part.

[0016] The first valve seat assembly is provided with a first channel, and the second valve seat assembly is provided with a second channel.

[0017] When the valve part is located at the opening position, the first channel, the first opening, the second opening and the second channel are communicated.

[0018] When the valve portion is in the closed position, the first passage and the second passage are blocked from communicating by the valve portion.

[0019] As a further improved technical scheme of the utility model, the floating type waterproof valve comprises a first fixing block fixed on the pivot shaft, the valve portion is provided with a first perforation, and the first fixing block is at least partially located in the first perforation.

[0020] As a further improved technical scheme of the utility model, the first fixing block is polygonal in shape.

[0021] As a further improved technical scheme of the utility model, the first fixing block is polygonal in shape.

[0022] As a further improved technical scheme of the utility model, the floating type waterproof valve comprises a second fixing block fixed on the pivot shaft, the valve portion is provided with a second perforation, and the second fixing block is at least partially located in the second perforation.

[0023] As a further improved technical scheme of the utility model, the second fixing block is polygonal in shape.

[0024] As a further improved technical scheme of the utility model, the second fixing block is polygonal in shape.

[0025] As a further improved technical scheme of the utility model, the pivot shaft passes through the first fixing block and the second fixing block, and the first fixing block and the second fixing block are arranged in a spaced manner along the extension direction of the pivot shaft.

[0026] As a further improved technical scheme of the utility model, the first valve seat assembly comprises a first mounting shell, the first valve seat, the first baffle and the first elastic piece are arranged in the first mounting shell, and the first mounting shell is fixed to one end of the shell.

[0027] As a further improved technical scheme of the utility model, the second valve seat assembly comprises a second mounting shell, the second valve seat, the second baffle and the second elastic piece are arranged in the second mounting shell, and the second mounting shell is fixed to the other end of the shell.

[0028] As a further improved technical scheme of the present utility model, the floating type waterproof valve is provided with a first mounting seat and a second mounting seat protruding along the radial direction of the shell, the protruding directions of the first mounting seat and the second mounting seat are opposite, the first mounting seat and the second mounting seat are fixed to the shell, the first mounting seat is provided with a first mounting space, and the second mounting seat is provided with a second mounting space.

[0029] The floating type waterproof valve comprises a first bushing accommodated in the first mounting space and a second bushing accommodated in the second mounting space, the first bushing is provided with a first center hole, the second bushing is provided with a second center hole, and the pivot shaft passes through the first center hole and the second center hole.

[0030] As a further improved technical scheme of the present utility model, the floating type waterproof valve is further provided with a shielding cover fixed to the second mounting seat to shield the second bushing.

[0031] Compared with the prior art, the first elastic member of the floating type waterproof valve of the present utility model can be elastically deformed, so that the first valve seat can move along the axial direction of the shell relative to the first baffle, thereby facilitating the improvement of the sealing effect. In addition, the valve part can float relative to the pivot shaft along the radial direction of the shell, which can adaptively adjust the sealing of the first arc surface and the first sealing surface and the sealing of the second arc surface and the second sealing surface, so as to achieve better sealing effect. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a perspective view of the floating type waterproof valve of the present utility model in an embodiment, wherein the valve part is in an open state;

[0033] Figure 2 is a top view of Figure 1 ;

[0034] Figure 3 is a right view of Figure 1 ;

[0035] Figure 4 is a front view of Figure 1 ;

[0036] Figure 5 is a rear view of Figure 1 ;

[0037] Figure 6 is a sectional view along the line A-A in Figure 1 ;

[0038] Figure 7 is an exploded view of Figure 1 ;

[0039] Figure 8 is a perspective view of the floating type water valve in one embodiment of the present utility model, wherein the valve part is in a closed state;

[0040] Figure 9 is Figure 8 a front view;

[0041] Figure 10 is Figure 8 a rear view;

[0042] Figure 11 is a cross-sectional view along the B-B line in Figure 8

[0043] Figure 12 is Figure 8 a perspective exploded view;

[0044] Figure 13 is Figure 11 a local enlarged view of the circled part C in DETAILED DESCRIPTION

[0045] The specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings, wherein if there are several specific embodiments, the features in these embodiments can be combined with each other in the case of no conflict. When the description refers to the drawings, the same numerals or symbols in different drawings represent the same or similar elements unless otherwise specified. The content described in the following exemplary specific embodiments does not represent all the embodiments of the present utility model, but rather, they are only examples of the products consistent with the present utility model as recited in the claims of the present utility model.

[0046] The terms used in the present utility model are merely for the purpose of describing the specific embodiments, and are not intended to limit the protection scope of the present utility model. It should be understood that the terms such as "first", "second" and the like used in the specification and claims of the present utility model do not represent any order, quantity or importance, but are only used for naming the features.

[0047] Please refer to Figures 1 to 13 , the present utility model discloses a floating type water valve 100, which is applied to an exhaust system, and comprises a shell 1, a valve part 2 installed on the shell 1, a pivot shaft 3, a first fixed block 41 fixed on the pivot shaft 3, a second fixed block 42 fixed on the pivot shaft 3, a first valve seat assembly 5 matched with the valve part 2, and a second valve seat assembly 6 matched with the valve part 2. The pivot shaft 3 is configured to be directly or indirectly driven by a driver (not shown) to rotate the valve part 2 in the shell 1 between the open position and the closed position.​

[0048] In an embodiment of the utility model, the shell 1 is metal shell, and it is cylindrical. The shell 1 includes inner cavity 10. The valve part 2 is installed in the inner cavity 10. The valve part 2 is hollow, and it includes spherical surface 21. The spherical surface 21 includes first sealing surface 211, second sealing surface 212 opposite to the first sealing surface 211, first opening 213 through the one side of valve part 2 along the axial direction of shell 1, second opening 214 through the other side of valve part 2 along the axial direction of shell 1, first perforation 215 through the valve part 2 upward along the radial direction of shell 1, and second perforation 216 through the valve part 2 downward along the radial direction of shell 1.

[0049] The floating waterproof valve 100 is provided with first mounting seat 11 and second mounting seat 12 protruding along the radial direction of shell 1, the protruding direction of first mounting seat 11 is opposite to the protruding direction of second mounting seat 12, and first mounting seat 11 and second mounting seat 12 are fixed with shell 1. First mounting seat 11 is provided with first mounting space 111, and second mounting seat 12 is provided with second mounting space 121.

[0050] The floating waterproof valve 100 includes first bushing 13 accommodated in first mounting space 111 and second bushing 14 accommodated in second mounting space 121. First bushing 13 is provided with first center hole 131, second bushing 14 is provided with second center hole 141, pivot shaft 3 passes through first center hole 131 and second center hole 141, and pivot shaft 3 can rotate compared with first bushing 13 and second bushing 14. The floating waterproof valve 100 is also provided with shielding cover 15 fixed on the bottom of second mounting seat 12 to shield second bushing 14.

[0051] In the embodiment shown in the utility model, pivot shaft 3 passes through first fixed block 41 and second fixed block 42, and first fixed block 41 and second fixed block 42 are arranged along the extension direction of pivot shaft 3. First fixed block 41 and second fixed block 42 are fixed with pivot shaft 3.

[0052] In the embodiment illustrated in the utility model, the first fixed block 41 is at least partially located in the first perforation 215, and the shape of the first fixed block 41 is matched with the shape of the first perforation 215. In the embodiment illustrated in the utility model, the shape of the first fixed block 41 and the shape of the first perforation 215 are both polygons. Specifically, in the embodiment illustrated in the utility model, the shape of the first fixed block 41 and the shape of the first perforation 215 are both hexagons. Of course, those skilled in the art can understand that the shape of the first fixed block 41 is matched with the shape of the first perforation 215, which means that when the first fixed block 41 rotates synchronously with the pivot shaft 3, the first fixed block 41 can drive the valve part 2 to rotate. The shape of the first fixed block 41 and the shape of the first perforation 215 are not limited to the shapes in the embodiment of the utility model, for example, the shape of the first fixed block 41 and the shape of the first perforation 215 can be a triangle, a quadrilateral, a pentagon, or other regular and irregular shapes.

[0053] Similarly, in the embodiment illustrated in the utility model, the second fixed block 42 is at least partially located in the second perforation 216, and the shape of the second fixed block 42 is matched with the shape of the second perforation 216. In the embodiment illustrated in the utility model, the shape of the second fixed block 42 and the shape of the second perforation 216 are both polygons. Specifically, in the embodiment illustrated in the utility model, the shape of the second fixed block 42 and the shape of the second perforation 216 are both hexagons. Of course, those skilled in the art can understand that the shape of the second fixed block 42 is matched with the shape of the second perforation 216, which means that when the second fixed block 42 rotates synchronously with the pivot shaft 3, the second fixed block 42 can drive the valve part 2 to rotate. The shape of the second fixed block 42 and the shape of the second perforation 216 are not limited to the shapes in the embodiment of the utility model, for example, the shape of the second fixed block 42 and the shape of the second perforation 216 can be a triangle, a quadrilateral, a pentagon, or other regular and irregular shapes.

[0054] In the embodiment shown in the utility model, the first valve seat assembly 5 comprises a first valve seat 51, a first baffle 52 and a first elastic member 53 clamped between the first valve seat 51 and the first baffle 52. The first elastic member 53 can be elastically deformed so that the first valve seat 51 can move / deform along the axial direction of the shell 1 relative to the first baffle 52, and the first valve seat 51 is provided with a first sealing surface 511 matched with the first arc surface 211. When the valve part 2 is in the closed state, the first arc surface 211 of the valve part 2 abuts against and seals the first sealing surface 511 of the first valve seat 51. In the embodiment shown in the utility model, the first arc surface 211 and the first sealing surface 511 are both annular, and the first arc surface 211 and the first sealing surface 511 form a first sealing pair.

[0055] In the embodiment shown in the utility model, the first elastic member 53 is a corrugated plate, one end of the first elastic member 53 abuts against the first valve seat 51, the other end of the first elastic member 53 abuts against the first baffle 52, and the first elastic member 53 is sealed along the radial direction of the shell 1. In the embodiment shown in the utility model, the first elastic member 53 is made of a metal material. Specifically, the cross section of the first elastic member 53 is W-shaped. Of course, those skilled in the art can understand that the first elastic member 53 is not limited to the present embodiment, and any other elastic member capable of resisting high temperature and capable of radial sealing can be used as the first elastic member 53 of the utility model.

[0056] In one embodiment of the utility model, one end of the first elastic member 53 is welded and fixed to the first valve seat 51, and the other end of the first elastic member 53 is welded and fixed to the first baffle 52.

[0057] The first valve seat 51 is provided with a first flared opening 510 facing the valve part 2, the first sealing surface 511 of the first valve seat 51 is exposed in the first flared opening 510, and the first sealing surface 511 is a conical surface.

[0058] In the embodiment shown in the utility model, the second valve seat assembly 6 comprises a second valve seat 61, a second baffle 62 and a second elastic member 63 clamped between the second valve seat 61 and the second baffle 62. The second elastic member 63 can be elastically deformed so that the second valve seat 61 can move / deform along the axial direction of the shell 1 relative to the second baffle 62, and the second valve seat 61 is provided with a second sealing surface 611 matched with the second arc surface 212. When the valve part 2 is in the closed state, the second arc surface 212 of the valve part 2 abuts against and seals the second sealing surface 611 of the second valve seat 61. In the embodiment shown in the utility model, the second arc surface 212 and the second sealing surface 611 are both annular, and the second arc surface 212 and the second sealing surface 611 form a second sealing pair.

[0059] In the embodiment shown in the utility model, the second elastic member 63 is a corrugated plate, one end of the second elastic member 63 abuts against the second valve seat 61, the other end of the second elastic member 63 abuts against the second baffle 62, and the second elastic member 63 is sealed along the radial direction of the shell 1. In the embodiment shown in the utility model, the second elastic member 63 is made of a metal material. Specifically, the cross section of the second elastic member 63 is W-shaped. Of course, those skilled in the art can understand that the second elastic member 63 is not limited to the present embodiment, and other elastic elements that can withstand high temperature and can perform radial sealing can also be used as the second elastic member 63 of the utility model.

[0060] In one embodiment of the utility model, one end of the second elastic member 63 is welded and fixed with the second valve seat 61, and the other end of the second elastic member 63 is welded and fixed with the second baffle 62.

[0061] The second valve seat 61 is provided with a second flared opening 610 facing the valve part 2, the second sealing surface 611 of the second valve seat 61 is exposed in the second flared opening 610, and the second sealing surface 611 is a conical surface.

[0062] In the embodiment shown in the utility model, the first valve seat assembly 5 comprises a first mounting shell 54, the first valve seat 51, the first baffle 52 and the first elastic member 53 are all arranged in the first mounting shell 54, and the first mounting shell 54 is fixed with one end of the shell 1.

[0063] Similarly, the second valve seat assembly 6 comprises a second mounting shell 64, the second valve seat 61, the second baffle 62 and the second elastic member 63 are all arranged in the second mounting shell 64, and the second mounting shell 64 is fixed with the other end of the shell 1.

[0064] In the embodiment shown in the drawings, the first valve seat assembly 5 is provided with a first channel 50, and the second valve seat assembly 6 is provided with a second channel 60. When the valve part 2 is in the open position, the first channel 50, the first opening 213, the second opening 214 and the second channel 60 are in communication. When the valve part 2 is in the closed position, the first channel 50 and the second channel 60 are blocked by the valve part 2 and are not in communication. Those skilled in the art can understand that the so-called "open position" means that the first channel 50 and the second channel 60 are in communication, and the so-called "closed position" means that the first channel 50 and the second channel 60 are almost not in communication or are not in communication at all. In other words, the "closed position" corresponds to the valve part 2 being in a closed state, and the "open position" corresponds to the valve part 2 being in an open state.

[0065] In the embodiment shown in the drawings, the first valve seat assembly 5 and the second valve seat assembly 6 are symmetrically arranged on both sides of the pivot shaft 3 along the axial direction of the housing 1.

[0066] In the embodiment shown in the drawings, the valve part 2 is supported between the first valve seat 51 and the second valve seat 61, and the valve part 2 can float along the radial direction of the housing 1 compared to the pivot shaft 3. Those skilled in the art can understand that no matter what position / height the valve part 2 is in, the first fixed block 41 and the second fixed block 42 are always clamped in the first perforation 215 and the second perforation 216, respectively. When the pivot shaft 3 rotates, the first fixed block 41 and the second fixed block 42 can drive the valve part 2 to rotate between the open position and the closed position.

[0067] Compared with the prior art, the valve part 2 of the present application is floatingly arranged, which can adaptively adjust the sealing of the first arc surface 211 and the first sealing surface 511 and the sealing of the second arc surface 212 and the second sealing surface 611 to achieve better sealing effect.

[0068] The above embodiments are only used to illustrate the present application and not to limit the technical solutions described in the present application. The understanding of the specification should be based on the skilled person in the art. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the skilled person in the art can still modify or equivalently replace the present application, and all technical solutions and improvements which do not deviate from the spirit and scope of the present application should be covered within the scope of the claims of the present application.

Claims

1. A floating waterstop valve characterized by, The valve includes a housing, a valve part arranged in the housing, a pivot shaft capable of directly or indirectly driving the valve part to rotate between an open position and a closed position, a first valve seat assembly matched with one side of the valve part, and a second valve seat assembly matched with the other side of the valve part; the valve part includes a first arc surface and a second arc surface opposite to the first arc surface; the first valve seat assembly includes a first valve seat, a first baffle and a first elastic member clamped between the first valve seat and the first baffle; the first elastic member is capable of being elastically deformed so as to enable the first valve seat to move along the axial direction of the housing relative to the first baffle; the first valve seat is provided with a first sealing surface matched with the first arc surface; the second valve seat assembly includes a second valve seat provided with a second sealing surface matched with the second arc surface; the valve part is supported between the first valve seat and the second valve seat, and the valve part is capable of floating along the radial direction of the housing relative to the pivot shaft.

2. The floating waterstop valve of claim 1, wherein: The second valve seat assembly includes a second baffle and a second elastic member clamped between the second valve seat and the second baffle; the second elastic member is capable of being elastically deformed so as to enable the second valve seat to move along the axial direction of the housing relative to the second baffle.

3. The floating waterstop valve of claim 1, wherein: The first elastic member is a wave plate, one end of the first elastic member is in abutment with the first valve seat, the other end of the first elastic member is in abutment with the first baffle, and the first elastic member seals along the radial direction of the housing.

4. The floating waterstop valve of claim 3, wherein: One end of the first elastic member is welded and fixed with the first valve seat, and the other end of the first elastic member is welded and fixed with the first baffle.

5. The floating waterstop valve of claim 1, wherein: The first valve seat is provided with a first horn mouth facing the valve part, the first sealing surface of the first valve seat is exposed in the first horn mouth, and the first sealing surface is a conical surface.

6. The floating waterstop valve of claim 2, wherein: The second elastic member is a wave plate, one end of the second elastic member is in abutment with the second valve seat, the other end of the second elastic member is in abutment with the second baffle, and the second elastic member seals along the radial direction of the housing.

7. The floating waterstop valve of claim 6, wherein: One end of the second elastic member is welded and fixed with the second valve seat, and the other end of the second elastic member is welded and fixed with the second baffle.

8. The floating waterstop valve of claim 2, wherein: The second valve seat is provided with a second horn mouth facing the valve part, the second sealing surface of the second valve seat is exposed in the second horn mouth, and the second sealing surface is a conical surface.

9. The floating waterstop valve of claim 1, wherein: The first valve seat assembly and the second valve seat assembly are symmetrically arranged along the axial direction of the housing on both sides of the pivot shaft.

10. The floating waterstop valve of claim 1, wherein: The housing includes an inner cavity, the valve part is arranged in the inner cavity; the valve part includes a spherical surface, the first sealing surface and the second sealing surface are arranged on the spherical surface, the spherical surface is further provided with a first opening penetrating one side of the valve part and a second opening penetrating the other side of the valve part; The first valve seat assembly is provided with a first channel, and the second valve seat assembly is provided with a second channel; When the valve part is located at the open position, the first channel, the first opening, the second opening and the second channel are communicated. When the valve part is in the closed position, the first passage and the second passage are blocked from communicating by the valve part.

11. The floating waterstop valve of claim 1, wherein: The floating waterproof valve comprises a first fixing block fixed on the pivot shaft, the valve part is provided with a first through hole, and the first fixing block is at least partially located in the first through hole; when the pivot shaft rotates, the first fixing block can drive the valve part to rotate between the open position and the closed position.

12. The floating waterstop valve of claim 11, wherein: The first fixing block is polygonal in shape.

13. The floating waterstop valve of claim 12, wherein: The first fixing block is polygonal in shape.

14. The floating waterstop valve of claim 11, wherein: The floating waterproof valve comprises a second fixing block fixed on the pivot shaft, the valve part is provided with a second through hole, and the second fixing block is at least partially located in the second through hole; when the pivot shaft rotates, the second fixing block can drive the valve part to rotate between the open position and the closed position.

15. The floating waterstop valve of claim 14, wherein: The second fixing block is polygonal in shape.

16. The floating waterstop valve of claim 15, wherein: The second fixing block is polygonal in shape.

17. The floating waterstop valve of claim 14, wherein: The pivot shaft passes through the first fixing block and the second fixing block, and the first fixing block and the second fixing block are arranged in a spaced manner along the extension direction of the pivot shaft.

18. The floating waterstop valve of claim 2, wherein: The first valve seat assembly comprises a first mounting shell, the first valve seat, the first blocking piece and the first elastic piece are arranged in the first mounting shell, and the first mounting shell is fixed to one end of the shell.

19. The floating waterstop valve of claim 18, wherein: The second valve seat assembly comprises a second mounting shell, the second valve seat, the second blocking piece and the second elastic piece are arranged in the second mounting shell, and the second mounting shell is fixed to the other end of the shell.

20. The floating waterstop valve of claim 1, wherein: The floating waterproof valve is provided with a first mounting seat and a second mounting seat protruding in the radial direction of the shell, the protruding directions of the first mounting seat and the second mounting seat are opposite, the first mounting seat and the second mounting seat are fixed to the shell, the first mounting seat is provided with a first mounting space, and the second mounting seat is provided with a second mounting space. The floating waterproof valve comprises a first bushing accommodated in the first mounting space and a second bushing accommodated in the second mounting space, the first bushing is provided with a first center hole, the second bushing is provided with a second center hole, and the pivot shaft passes through the first center hole and the second center hole.

21. The floating waterstop valve of claim 20, wherein: The floating waterproof valve is further provided with a shielding cover fixed to the second mounting seat to shield the second bushing.

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