Safety check valve with long service life

Abstract

The utility model discloses a long-service-life safety check valve which comprises a valve body, a valve cover fixed to the upper end of the valve body, a support fixedly connected with the interior of the valve body, a rocker matched with the support in a rotating mode, a valve clack detachably fixed to the rocker and a valve seat integrated with the interior of the valve body. A sealing ring groove is formed in the side, close to the valve seat, of the valve clack, an elastic ring is fixedly arranged in the sealing ring groove, an inner ring groove is formed in the position, corresponding to the elastic ring, of the valve seat, a side groove is formed in the side, close to the inflow channel, of the valve clack, and a first panel is movably arranged in the side groove through a first elastic structure. A pressure relief part is fixedly arranged on the side, close to the outflow channel, of the valve body. The sealing performance between the valve clack and the valve seat can be effectively enhanced, media can be effectively prevented from flowing back, the pressure relief part is arranged, the use safety performance is high, and the service life is long.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field more specifically relates to a long life safety check valve. BACKGROUND

[0002] Check valve includes swing check valve, its function is to prevent the medium in the pipeline from flowing backward, and the opening and closing part is opened or closed by the medium flow and force to prevent the medium from flowing backward, and the valve is called check valve. Check valve belongs to automatic valve, and is mainly used in the pipeline with one-way flow of medium, only allowing the medium to flow in one direction to prevent accidents. During the use of the valve, when the water inflow is stopped, the water in the check valve is prone to backflow, and the backflow impact water may cause backflow from the gap between the valve disc and the valve seat, so the sealing performance between the valve disc and the valve seat is particularly important.

[0003] The prior art discloses a swing check valve with the publication number CN204025789U, the valve disc device can further press the sealing surface on the valve seat by the weight of the backflow liquid, so that the valve seat and the sealing surface are tightly pressed, and the backflow of the liquid is prevented. However, the utility model still has the following problems: although the support is a frame structure, the water flow can be reduced, but the support itself still has a certain resistance to the water flow, which affects the flow rate of the water flow, thereby affecting the opening and closing time of the valve. In addition, when the water flow flows from the inflow channel to the outflow channel, the support may be crushed and broken by the valve disc, and when the water flow backflows, the pressure in the valve body is easily changed, and the valve body is easily damaged, so the safety performance is poor. Therefore, the utility model provides a long life safety check valve. UTILITY MODEL CONTENTS

[0004] The utility model discloses a long life safety check valve, which can effectively enhance the sealing performance between the valve disc and the valve seat, effectively prevent the medium from flowing backward, and has a pressure relief part, so that the safety performance is high, and the service life is long.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] The utility model provides a long -life safety check valve, including the valve body, the valve cover fixed on the upper end of valve body, with the support of fixed connection in the valve body, the rocker with support rotation cooperation, with the rocker detachable fixed valve clapper and with the valve seat of integral arrangement in the valve body, both sides of the valve body are equipped with inflow channel and outflow channel respectively, the side of valve clapper close to the valve seat is equipped with sealing ring groove, the sealing ring groove is equipped with the elastic ring fixedly, the valve seat is equipped with the inner ring groove with the position of elastic ring, the side of elastic ring away from valve clapper is clamped in corresponding inner ring groove, the side of valve clapper close to inflow channel is equipped with side groove, the side groove is movably equipped with panel one through elastic structure one, the side of valve clapper close to outflow channel is fixedly equipped with backflow part, the side of valve body close to outflow channel is fixedly equipped with pressure relief part, and the pressure relief part includes main part, the side close to the valve body of main part is equipped with bottom groove, and the bottom groove is movably equipped with moving block through elastic structure two, and the side of moving block away from elastic structure two is fixedly equipped with panel two.

[0007] With the above technical scheme, the utility model has the following advantages:

[0008] The setting of the elastic ring plays a role in strengthening the sealing between the valve seat and the valve clapper, reduces the impact between the valve clapper and the valve seat when the valve clapper returns to the original position, protects the valve clapper and the valve seat, and effectively improves the service life of the utility model; the setting of the elastic structure one, the panel one, the spring structure two, and the panel two can effectively release the pressure on both sides of the valve body, protect the valve body, make the utility model safer to use, the panel one can also relieve the impact of the medium on the valve clapper, protect the valve clapper, and effectively improve the service life of the utility model; the setting of the backflow part can effectively gather the impact of the backflow medium and strengthen the sealing between the valve clapper and the valve seat, effectively prevent the backflow leakage of the medium.

[0009] Further, the side of the side groove close to the inflow channel is communicated with a clamping groove, the clamping groove is provided with a fixed ring plate, the fixed ring plate is fixedly connected with the valve clapper through a plurality of bolts, the side of the side groove on both sides of the clamping groove is communicated with a sliding groove one, one side of the panel one corresponding to the sliding groove one is fixedly provided with a sliding block one, and the sliding block one is movably connected by being clamped in the corresponding sliding groove one.

[0010] With the above technical scheme, the utility model has the following advantages:

[0011] The setting of the sliding block one and the sliding groove one can effectively prevent the panel one from separating from the side groove.

[0012] Further, the elastic structure one includes a plurality of springs one, and the panel one and the side groove are fixedly provided with a plurality of springs one.

[0013] By means of the above technical scheme, the utility model has the following advantages:

[0014] The spring one is arranged to press the panel one.

[0015] Further, the return flow part is annular, and an inner ring groove is arranged on one side of the return flow part close to the outflow channel.

[0016] By means of the above technical scheme, the utility model has the following advantages:

[0017] The inner ring groove is arranged to converge the impact force of the return flow medium.

[0018] Further, the main body is fixedly connected with the valve body, a fixing surface is fixedly arranged on one side of the main body outside the valve body, the fixing surface is fixedly connected with the valve body through a plurality of bolts, and a sealing ring is embedded and fixed on one side of the valve body in contact with the main body.

[0019] By means of the above technical scheme, the utility model has the following advantages:

[0020] The fixing surface and the sealing ring are arranged to effectively improve the connection strength and sealing performance of the main body and the valve body.

[0021] Further, the elastic structure two comprises a plurality of springs two, and the plurality of springs two are fixedly arranged between the moving block and the bottom groove.

[0022] By means of the above technical scheme, the utility model has the following advantages:

[0023] The spring two is arranged to press the moving block.

[0024] Further, a sliding groove two is arranged on the two sides of the bottom groove in communication, a sliding block two is fixedly arranged on one side of the moving block close to the spring two and corresponding to the sliding groove two, and the sliding block two is movably connected in the sliding groove two.

[0025] By means of the above technical scheme, the utility model has the following advantages:

[0026] The sliding block two and the sliding groove two are arranged to effectively prevent the moving block from being separated from the bottom groove.

[0027] Further, the panel two is fixedly provided with an elastic surface on one side away from the moving block.

[0028] By means of the above technical scheme, the utility model has the following advantages:

[0029] The elastic surface can play a role of protecting the panel two and the rocker, and effectively prolongs the service life of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0030] The utility model is further illustrated below in combination with the drawings and examples.

[0031] Figure 1 It is a valve clack unopened cross section structure schematic view of the utility model;

[0032] Figure 2 It is a valve clack opened cross section structure schematic view of the utility model;

[0033] Figure 3 It is the utility model Figure 1 It is the utility model

[0034] Figure 4 It is the utility model Figure 2 It is the utility model

[0035] Reference signs: 1, valve body; 101, inflow channel; 102, outflow channel; 2, valve seat; 201, inner ring groove; 3, valve clack; 301, sealing ring groove; 302, side groove; 303, sliding groove one; 304, clamping groove; 4, panel one; 401, sliding block one; 5, main body; 501, bottom groove; 502, sliding groove two; 6, moving block; 601, sliding block two; 7, panel two; 701, elastic surface; 8, backflow part; 801, inner ring recess; 9, elastic ring; 10, fixed ring plate; 11, spring one; 12, rocker; 13, support; 14, valve cover; 15, fixed surface; 16, spring two; 17, sealing ring. DETAILED DESCRIPTION

[0036] As Figures 1 to 4As shown, in this specific embodiment, a high-life safety check valve includes a valve body 1, a valve cover 14 fixed to the upper end of the valve body 1, a bracket 13 fixedly connected to the valve body 1, a rocker arm 12 rotatably engaged with the bracket 13, a valve disc 3 detachably fixed to the rocker arm 12, and a valve seat 2 integrally formed with the valve body 1. The valve body 1 has an inflow channel 101 and an outflow channel 102 on both sides. The valve disc 3 has a sealing ring groove 301 on the side near the valve seat 2, and an elastic ring 9 is fixedly installed in the sealing ring groove 301. The valve seat 2 has an inner ring groove 201 corresponding to the position of the elastic ring 9. 9. The side away from the valve disc 3 is locked in the corresponding inner ring groove 201. The side of the valve disc 3 near the inflow channel 101 is provided with a side groove 302. The side groove 302 is provided with a panel 4 that can be moved through the elastic structure 1. The side of the valve disc 3 near the outflow channel 102 is fixedly provided with a return part 8. The side of the valve body 1 near the outflow channel 102 is fixedly provided with a pressure relief part. The pressure relief part includes a main body 5. The side of the main body 5 near the valve body 1 is provided with a bottom groove 501. The bottom groove 501 is provided with a moving block 6 that can be moved through the elastic structure 2. The side of the moving block 6 away from the elastic structure 2 is fixedly provided with a panel 7.

[0037] Through the above settings, the elastic ring 9 of this utility model not only strengthens the sealing between the valve seat 2 and the valve disc 3, but also reduces the impact between the valve disc 3 and the valve seat 2 when the valve disc 3 returns to its original position, thus protecting the valve disc 3 and the valve seat 2 and effectively improving the service life of this utility model. The elastic structure one, panel one 4, spring structure two and panel two 7 of this utility model can effectively relieve the pressure on both sides of the valve body 1, thus protecting the valve body 1 and making it safer to use. In addition, panel one 4 can also alleviate the impact force of the medium on the valve disc 3, thus protecting the valve disc 3 and effectively improving the service life of this utility model. The reflux part 8 of this utility model can effectively gather the impact force of the reflux medium, thereby strengthening the sealing between the valve disc 3 and the valve seat 2 and effectively preventing the medium from flowing back and leaking.

[0038] like Figure 1 and Figure 3 As shown, a slot 304 is provided on the side of the side channel 302 near the inflow channel 101. A fixed ring plate 10 is provided in the slot 304. The fixed ring plate 10 is fixedly connected to the valve disc 3 by several bolts. A sliding groove 303 is provided on both sides of the side channel 302 on one side of the slot 304. A slider 401 is fixedly provided on the side of the panel 4 corresponding to the sliding groove 303. The slider 401 is movably connected and locked in the corresponding sliding groove 303. The elastic structure includes several springs 11. Several springs 11 are fixedly provided between the panel 4 and the side channel 302. The return section 8 is ring-shaped. An inner ring groove 801 is provided on the side of the return section 8 near the outflow channel 102.

[0039] Through the above setting, the setting of the sliding block 401 and the sliding groove 303 can effectively prevent the panel 4 from being separated from the side groove 302; the setting of the spring 11 plays a role of extruding the panel 4; the setting of the inner ring groove 801 can play a role of gathering the impact force of the backflow medium.

[0040] As shown in Figure 2 and Figure 4 The main body 5 is fixedly connected with the valve body 1 through the corresponding valve body 1, and the main body 5 is fixedly provided with a fixed surface 15 on the side away from the valve body 1; the fixed surface 15 is fixedly connected with the corresponding valve body 1 through a plurality of bolts; a sealing ring 17 is embedded and fixed on the side of the valve body 1 in contact with the main body 5; the elastic structure two comprises a plurality of springs 16, and the plurality of springs 16 are fixedly arranged between the moving block 6 and the bottom groove 501; the bottom groove 501 is provided with a sliding groove two 502 on the two sides; the moving block 6 is provided with a sliding block two 601 on the side close to the spring 16 and corresponding to the position of the sliding groove two 502, and the sliding block two 601 is movably connected in the corresponding sliding groove two 502; the panel two 7 is fixedly provided with an elastic surface 701 on the side away from the moving block 6.

[0041] Through the above setting, the setting of the fixed surface 15 and the sealing ring 17 effectively strengthens the connection strength and sealing performance of the main body 5 and the valve body 1; the setting of the spring 16 plays a role of extruding the moving block 6; the setting of the sliding block two 601 and the sliding groove two 502 can effectively prevent the moving block 6 from being separated from the bottom groove 501; the elastic surface 701 can play a role of protecting the panel two 7 and the rocker 12, and effectively improve the service life of the utility model.

[0042] Working principle: when in use, the medium flows from the inflow channel 101 to the outflow channel 102, the impact force of the medium pushes the valve disc 3 to move towards the outflow channel 102, the side of the valve disc 3 away from the bracket 13 moves towards the panel two 7 until the end of the rocker 12 away from the bracket 13 abuts against the elastic surface 701 on the panel two 7, the spring 16 can buffer the impact force of the moving valve disc 3, prevent it from being damaged by impacting the inner side of the valve body 1, and then make the channel between the inflow channel 101 and the outflow channel 102 communicate, so that the medium can flow through; when the medium stops flowing, the valve disc 3 returns to the original position, and when the medium flows back, most of the medium will impact into the inner ring groove 801 of the backflow part 8, and the gathered impact force will push the valve disc 3 to tightly contact with the valve seat 2, which can effectively prevent the medium from flowing back; when the pressure of the medium flowing back into the valve body 1 near the end of the outflow channel 102 is too large, the panel two 7 can be extruded, thereby effectively playing a role of pressure relief, preventing the valve body 1 from being damaged, and being safer to use; when the pressure of the side of the valve body 1 close to the inflow channel 101 becomes larger, the panel one 4 can be extruded, thereby effectively playing a role of pressure relief, effectively preventing the valve body 1 from being damaged, and being safer to use.

[0043] The preferred embodiments of the present application have been described above, the protection scope of the present application is not limited to the above-mentioned embodiments, and any technical scheme falling within the concept of the present application belongs to the protection scope of the present application. It should be noted that, for ordinary skilled persons in the art, some improvements and decorations without departing from the principles of the present application are also considered to be within the protection scope of the present application.

Claims

1. A long-life safety check valve, comprising a valve body (1), a valve cover (14) fixed on the upper end of the valve body (1), a support (13) fixedly connected in the valve body (1), a rocker (12) in rotational cooperation with the support (13), a valve disc (3) removably fixed with the rocker (12), and a valve seat (2) integrally arranged in the valve body (1), wherein the valve body (1) is respectively provided with an inflow passage (101) and an outflow passage (102) on both sides thereof, characterized in that, The side of the valve disc (3) close to the valve seat (2) is provided with a sealing ring groove (301), and an elastic ring (9) is fixedly arranged in the sealing ring groove (301); the valve seat (2) is provided with an inner ring groove (201) corresponding to the position of the elastic ring (9); the side of the elastic ring (9) away from the valve disc (3) is clamped in the corresponding inner ring groove (201); the side of the valve disc (3) close to the inflow channel (101) is provided with a side groove (302); a panel one (4) is movably arranged in the side groove (302) through elastic structure one; the side of the valve disc (3) close to the outflow channel (102) is fixedly provided with a backflow part (8); the side of the valve body (1) close to the outflow channel (102) is fixedly provided with a pressure relief part; the pressure relief part comprises a main body (5); the side of the main body (5) close to the valve body (1) is provided with a bottom groove (501); a moving block (6) is movably arranged in the bottom groove (501) through elastic structure two; the side of the moving block (6) away from the elastic structure two is fixedly provided with a panel two (7).

2. A high life safety check valve according to claim 1, wherein The side of the side groove (302) close to the inflow channel (101) is communicated with a clamping groove (304); a fixed ring plate (10) is arranged in the clamping groove (304); the fixed ring plate (10) is fixedly connected with the valve disc (3) through a plurality of bolts; the two sides of the side groove (302) are communicated with a sliding groove one (303) on one side of the clamping groove (304); the side of the panel one (4) corresponding to the sliding groove one (303) is fixedly provided with a sliding block one (401); the sliding block one (401) is movably connected by being clamped in the corresponding sliding groove one (303).

3. A high life safety check valve according to claim 2, wherein The elastic structure one comprises a plurality of spring ones (11); the panel one (4) and the side groove (302) are fixedly provided with a plurality of spring ones (11).

4. A high life safety check valve according to claim 1, wherein The backflow part (8) is annular; the side of the backflow part (8) close to the outflow channel (102) is provided with an inner ring groove (801).

5. A high life safety check valve according to claim 1, wherein The main body (5) is fixedly connected with the valve body (1) through the corresponding valve body (1); the side of the main body (5) outside the valve body (1) is fixedly provided with a fixed surface (15); the fixed surface (15) is fixedly connected with the corresponding valve body (1) through a plurality of bolts; the surface of the valve body (1) in contact with the main body (5) is embeddedly fixedly provided with a sealing ring (17).

6. A high life safety check valve according to claim 5, wherein The elastic structure two comprises a plurality of spring twos (16); the moving block (6) and the bottom groove (501) are fixedly provided with a plurality of spring twos (16).

7. A high life safety check valve according to claim 6, wherein The two sides of the bottom groove (501) are communicated with a sliding groove two (502); the side of the moving block (6) close to the spring two (16) is fixedly provided with a sliding block two (601) corresponding to the position of the sliding groove two (502); the sliding block two (601) is movably connected by being clamped in the corresponding sliding groove two (502).

8. A high life safety check valve according to claim 7, wherein The side of the panel two (7) away from the moving block (6) is fixedly provided with an elastic surface (701).

Images