CN223294318U

CN223294318U - A rubber flap check valve

Info

Publication number: CN223294318U
Application number: CN202422862387.3U
Authority: CN
Inventors: 黄志民; 杨月芳; 伍成娟
Original assignee: Shanghai Biaoyi Valve Co ltd
Current assignee: Shanghai Biaoyi Valve Co ltd
Priority date: 2024-11-23
Filing date: 2024-11-23
Publication date: 2025-09-02
Anticipated expiration: 2034-11-23

Abstract

The utility model discloses a rubber flap check valve which comprises a valve body, wherein connecting pipes are arranged on two sides of the valve body, a second nut is arranged at the bottom end of a mounting screw, a cover body is arranged at the top end of a first connecting plate, and a handle is arranged at the top end of the cover body. According to the utility model, the cover body is arranged at the top end of the inlet, the cover body can be clamped into the inlet for installation, after the cover body is clamped into the inlet, the first connecting plate at the outer side of the cover body covers the top end of the second connecting plate at the outer side of the inlet, the installation screw can penetrate through the first connecting plate and the second connecting plate, and then the second nut can be screwed down to fix the first connecting plate and the second connecting plate together, so that the cover body can be fixed at the top end of the inlet, when the inside of the valve body is required to be maintained, the second nut is unscrewed, and then the handle is grasped to detach the cover body, and then the inside of the valve body can be maintained through the inlet, so that the purpose that the rubber flap check valve is convenient for maintaining the inside of the valve body is achieved.

Description

Rubber flap check valve

Technical Field

The utility model relates to the technical field of check valves, in particular to a rubber flap check valve.

Background

The check valve is a valve with a circular valve clack and can block the backflow of medium by the action of self weight and medium pressure, and belongs to automatic valves, also called check valve, one-way valve, reflux valve or isolation valve, the check valve has the function that fluid can only flow along a water inlet, the water outlet medium can not flow back, the movement mode of the valve clack is divided into a lifting type and a swing type, and the check valve and the stop valve are combined for use, so that the safety isolation function can be realized, and the valve clack is used for preventing reverse flow of oil flow in a hydraulic system or compressed air in a pneumatic system.

For this reason, chinese application patent number CN201916548U discloses rubber clack check valve, including valve body, valve gap, valve clack, the valve gap is installed valve body upper portion, valve clack one end utilizes the round pin axle to install on the valve gap and can rotate around the axle, this valve clack whole slope is leaned on the sealing seat of valve body, the valve clack is the rubber valve clack. The utility model has simple structure, the valve clack is not easy to corrode, the service life is long, and the sealing effect is good.

1. The rubber flap check valve solves the problems that the valve clack is difficult to corrode, long in service life and good in sealing effect, but after the valve body is used for a long time, the valve clack inside still has abrasion and impurity garbage deposition, and when the condition occurs, the valve body needs to be wholly removed and cleaned, and maintained, but the existing rubber flap check valve body is of an integrated structure, and is difficult to repair and clean the valve body.

2. When the valve body is used, the valve body can be connected with other pipelines, the traditional check valve is only sealed through the sealing gasket, the sealing performance of the joint is not strong enough when the valve body is connected with other pipe bodies, the condition of water leakage and air leakage can occur, and the sealing performance of the joint of the valve body is difficult to strengthen.

Disclosure of utility model

The utility model aims to provide a rubber flap check valve, which is used for solving the defects that the existing rubber flap check valve is difficult to maintain the inside of a valve body and is difficult to strengthen the tightness of a joint of the valve body.

In order to solve the technical problems, the utility model provides the technical scheme that the rubber flap check valve comprises a valve body;

Connecting pipes are arranged on two sides of the valve body, reinforcing rings are arranged on the outer sides of the connecting pipes, connecting structures are arranged on one sides of the connecting pipes, pipe bodies are arranged on one sides of the connecting structures, and filtering structures are arranged on one sides of the inner parts of the valve body;

A rotating shaft is arranged on one side of the valve body, a valve clack is arranged at the bottom end of the rotating shaft, an inlet is arranged at the top end of the valve body, a disassembly and assembly structure is arranged at the top end of the inlet, and the disassembly and assembly structure comprises a first connecting plate, a second connecting plate, a cover body, a handle, an installation screw, a second nut and a sealing gasket;

The top at the entry is installed to the second connecting plate, first connecting plate is installed on the top of second connecting plate, the top swing joint of first connecting plate has the installation screw, the second nut is installed to the bottom of installation screw, the lid is installed on the top of first connecting plate, the handle is installed on the top of lid.

When the valve is used, the valve clack is made of rubber materials, the valve clack can rotate through the rotating shaft, the valve clack can only rotate to one side, when water or gas moves from left to right in the figure, the impact force can push the valve clack to pass through the valve body, when water or gas moves from right to left, the valve clack can be blocked by the connecting pipe at the bottom end and can not rotate, therefore, the valve clack can block water and gas, and backflow of water or gas is prevented.

Further, connection structure includes first flange, second flange, set screw, first nut, briquetting and rubber pad, the second flange is installed in one side of body, one side of second flange is provided with first flange, one side of first flange is run through there is the set screw, the set screw is consequently installed first nut, one side of first flange is provided with the rubber pad, the briquetting is installed to one side of second flange, and first flange and second flange cooperation can be in the same place body and connecting pipe connection.

Furthermore, the fixing screw and the first nut form threaded connection, the first nuts are arranged at one side of the second flange at equal intervals, and the fixing screw and the first nut are matched to fix the first flange and the second flange.

Further, the pressing block and the rubber pad form a clamping structure, the outer diameter of the pressing block is smaller than the inner diameter of the rubber pad, and the sealing performance between the flanges can be enhanced by matching the pressing block with the rubber pad.

Further, filtration includes mounting panel, installation piece, curb plate and filter screen, the installation piece is installed in one side of valve body, the mounting panel is installed to one side of installation piece, the outside of mounting panel is provided with the curb plate, the internally mounted of mounting panel has the filter screen, can filter gas and water through the filter screen.

Further, one side of installation piece is provided with the draw-in groove, one side of mounting panel is provided with the fixture block, installation piece and mounting panel constitute the block structure, and the block structure convenient to detach.

Further, the external screw threads are uniformly arranged on the outer side wall of the mounting screw, the internal screw threads matched with the external screw threads are uniformly arranged on the inner side wall of the second nut, the mounting screw is in threaded connection with the second nut, and the cover body can be fixed at the top end of the inlet by matching the mounting screw with the second nut.

The rubber flap check valve has the advantages that the cover body is fixed at the top end of the inlet, the cover body can be fixed at the top end of the inlet through the cooperation of the mounting screw and the nut, the cover body can be opened, the inside of the valve body is maintained through the inlet, the filter screen in the valve body can filter water and gas passing through the valve body, the valve body can be connected with different pipe bodies through the cooperation of the first flange and the second flange, and the sealing performance between the flanges can be enhanced through the rubber pad in the valve body.

Through installing the lid on the top of entry, the lid can block into the entry inside and install, the lid card is gone into the inside back of entry, and the first connecting plate lid in the lid outside is on the second connecting plate top in the entry outside, and the installation screw can pass first connecting plate and second connecting plate, then can screw up the second nut and fix first connecting plate and second connecting plate together, just so can fix the lid on the entry top, when needing to maintain the valve body inside, unscrew the second nut, then grasp the handle and dismantle the lid after, just can maintain the valve body inside through the entry to this reaches the purpose that the rubber lamella check valve is convenient for maintain the valve body inside.

Through installing first flange in one side of connecting pipe, the first flange of connecting pipe one side and the second flange of body one side mutually support, the fixed screw runs through first flange and second flange, if then can screw up the back through first nut, just can be together fixed with first flange and second flange, first flange and second flange cooperation just can be together fixed connecting pipe and body, the briquetting of second flange one side can block into the recess of first flange inside, the briquetting can extrude the rubber pad, the rubber pad has elasticity, the rubber pad can be filled up the gap between the flange after being extruded, strengthen the leakproofness between first flange and the second flange, thereby reach the purpose that the leakproofness between the flange is convenient for strengthen to the rubber lamella check valve.

Drawings

FIG. 1 is a schematic three-dimensional structure of the present utility model;

FIG. 2 is a schematic cross-sectional elevation view of the present utility model;

FIG. 3 is an enlarged partial cross-sectional view of the structure of FIG. 2A according to the present utility model;

FIG. 4 is a schematic view of a front partial cross-sectional structure of the detachable structure of the present utility model;

fig. 5 is a schematic view of a front partial cross-sectional structure of a connection structure according to the present utility model.

The reference numerals in the drawings illustrate 1, a valve body, 2, a connecting pipe, 3, a connecting structure, 301, a first flange, 302, a second flange, 303, a fixing screw, 304, a first nut, 305, a pressing block, 306, a rubber pad, 4, a pipe body, 5, a rotating shaft, 6, a valve clack, 7, a filtering structure, 701, a mounting plate, 702, a mounting block, 703, a side plate, 704, a filter screen, 8, a reinforcing ring, 9, a dismounting structure, 901, a first connecting plate, 902, a second connecting plate, 903, a cover body, 904, a handle, 905, a mounting screw, 906, a second nut, 907, a sealing pad and 10, and an inlet.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, an embodiment of the utility model is a rubber flap check valve, comprising a valve body 1.

The connecting pipe 2 is all installed to the both sides of valve body 1, reinforcing ring 8 is installed in the outside of connecting pipe 2, connection structure 3 is installed to one side of connecting pipe 2, connection structure 3 includes first flange 301, second flange 302, set screw 303, first nut 304, briquetting 305 and rubber pad 306, one side at body 4 is installed to second flange 302, one side of second flange 302 is provided with first flange 301, one side of first flange 301 runs through has set screw 303, set screw 303 and first nut 304 constitute threaded connection, first nut 304 is equidistant the range in one side of second flange 302.

The first nut 304 is thus installed to the set screw 303, the rubber pad 306 is provided on one side of the first flange 301, the press block 305 is installed on one side of the second flange 302, the press block 305 and the rubber pad 306 constitute a snap-fit structure, and the outer diameter of the press block 305 is smaller than the inner diameter of the rubber pad 306.

Referring to fig. 1-2 and fig. 5, a first flange 301 on one side of the connection pipe 2 and a second flange 302 on one side of the pipe body 4 are matched with each other, a fixing screw 303 penetrates through the first flange 301 and the second flange 302, if the first flange 301 and the second flange 302 can be fixed together after being screwed down through a first nut 304, the first flange 301 and the second flange 302 can be matched with each other to fix the connection pipe 2 and the pipe body 4 together, a pressing block 305 on one side of the second flange 302 can be clamped into a groove of the first flange 301, the pressing block 305 can squeeze a rubber pad 306, the rubber pad 306 has elasticity, gaps between the flanges can be filled after the rubber pad 306 is squeezed, and the tightness between the first flange 301 and the second flange 302 is enhanced.

The body 4 is installed to one side of connection structure 3, and filtration 7 is installed to one side of valve body 1 inside, and filtration 7 includes mounting panel 701, installation piece 702, curb plate 703 and filter screen 704, and installation piece 702 is installed in one side of valve body 1, and one side of installation piece 702 is provided with the draw-in groove, and one side of mounting panel 701 is provided with the fixture block, and installation piece 702 and mounting panel 701 constitute the block structure.

A mounting plate 701 is mounted on one side of the mounting block 702, a side plate 703 is provided on the outer side of the mounting plate 701, and a filter screen 704 is mounted inside the mounting plate 701.

Referring to fig. 2-3, the valve clack 6 is made of rubber material, the valve clack 6 can rotate through the rotating shaft 5, the valve clack 6 can only rotate to one side, when water or gas moves from left to right as shown in the figure, impact force can push the valve clack 6 to pass through the valve body 1, when water or gas moves from right to left, the valve clack 6 can be blocked by the connecting pipe 2 at the bottom end and can not rotate, therefore, the valve clack 6 can block water and gas, backflow of water or gas is prevented, water or gas passing through the valve body 1 can be filtered by the filter screen 704, the mounting plate 701 and the mounting block 702 form a clamping structure, the filter screen 704 is fixed on the mounting block 702 through the mounting plate 701, the side plate 703 enables the filter screen 704 to be convenient to detach, and when the filter screen 704 needs to be detached, the filter screen 704 can be detached through the inlet 10.

A rotary shaft 5 is installed at one side of the valve body 1, a valve clack 6 is installed at the bottom end of the rotary shaft 5, an inlet 10 is installed at the top end of the valve body 1, a dismounting structure 9 is installed at the top end of the inlet 10, and the dismounting structure 9 comprises a first connecting plate 901, a second connecting plate 902, a cover 903, a handle 904, mounting screws 905, a second nut 906 and a sealing gasket 907.

The top at entry 10 is installed to second connecting plate 902, and first connecting plate 901 is installed on the top of second connecting plate 902, and the top swing joint of first connecting plate 901 has mounting screw 905, evenly is provided with the external screw thread on the lateral wall of mounting screw 905, evenly is provided with the internal screw thread mutually supporting with the external screw thread on the inside wall of second nut 906, and mounting screw 905 is threaded connection with second nut 906.

A second nut 906 is attached to the bottom end of the attachment screw 905, a cover 903 is attached to the top end of the first attachment plate 901, and a handle 904 is attached to the top end of the cover 903.

Referring to fig. 1-2 and fig. 4, the cover 903 and the inlet 10 form a fastening structure, the cover 903 may be fastened into the inlet 10 for installation, after the cover 903 is fastened into the inlet 10, the sealing gasket 907 may strengthen the tightness between the cover 903 and the inlet 10, the first connection plate 901 on the outer side of the cover 903 covers the top end of the second connection plate 902 on the outer side of the inlet 10, the installation screw 905 may penetrate the first connection plate 901 and the second connection plate 902, and then the second nut 906 may be screwed to fix the first connection plate 901 and the second connection plate 902 together, so that the cover 903 may be fixed on the top end of the inlet 10, when the maintenance is required inside the valve body 1, the second nut 906 may be screwed off, and then after the cover 903 is detached by grasping the handle 904, the maintenance may be performed inside the valve body 1 through the inlet 10.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. A rubber flap check valve, comprising a valve body (1);

the method is characterized in that:

Connecting pipes (2) are arranged on two sides of the valve body (1), reinforcing rings (8) are arranged on the outer sides of the connecting pipes (2), connecting structures (3) are arranged on one sides of the connecting pipes (2), pipe bodies (4) are arranged on one sides of the connecting structures (3), and filtering structures (7) are arranged on one sides of the inner parts of the valve body (1);

A rotating shaft (5) is arranged on one side of the valve body (1), a valve clack (6) is arranged at the bottom end of the rotating shaft (5), an inlet (10) is arranged at the top end of the valve body (1), a dismounting structure (9) is arranged at the top end of the inlet (10), and the dismounting structure (9) comprises a first connecting plate (901), a second connecting plate (902), a cover body (903), a handle (904), mounting screws (905), a second nut (906) and a sealing gasket (907);

the utility model discloses a handle, including entry (10), first connecting plate (901) are installed on the top of second connecting plate (902), top swing joint of first connecting plate (901) has installation screw (905), second nut (906) are installed to the bottom of installation screw (905), lid (903) are installed on the top of first connecting plate (901), handle (904) are installed on the top of lid (903).

2. The rubber flap check valve according to claim 1, wherein the connecting structure (3) comprises a first flange (301), a second flange (302), a fixing screw (303), a first nut (304), a pressing block (305) and a rubber pad (306), the second flange (302) is arranged on one side of the pipe body (4), the first flange (301) is arranged on one side of the second flange (302), the fixing screw (303) penetrates through one side of the first flange (301), the first nut (304) is arranged on one side of the fixing screw (303), the rubber pad (306) is arranged on one side of the first flange (301), and the pressing block (305) is arranged on one side of the second flange (302).

3. A rubber flap check valve according to claim 2 characterized in that the set screw (303) and the first nut (304) form a threaded connection, the first nuts (304) being arranged at equal intervals on one side of the second flange (302).

4. The rubber flap check valve according to claim 2, wherein the pressing block (305) and the rubber pad (306) form a clamping structure, and the outer diameter of the pressing block (305) is smaller than the inner diameter of the rubber pad (306).

5. The rubber flap check valve according to claim 1, wherein the filtering structure (7) comprises a mounting plate (701), a mounting block (702), a side plate (703) and a filter screen (704), the mounting block (702) is mounted on one side of the valve body (1), the mounting plate (701) is mounted on one side of the mounting block (702), the side plate (703) is arranged on the outer side of the mounting plate (701), and the filter screen (704) is mounted inside the mounting plate (701).

6. The rubber flap check valve according to claim 5, wherein a clamping groove is formed in one side of the mounting block (702), a clamping block is arranged on one side of the mounting plate (701), and the mounting block (702) and the mounting plate (701) form a clamping structure.

7. The rubber flap check valve according to claim 1, wherein external threads are uniformly formed on the outer side wall of the mounting screw (905), internal threads matched with the external threads are uniformly formed on the inner side wall of the second nut (906), and the mounting screw (905) is in threaded connection with the second nut (906).