CN215522102U

CN215522102U - Check valve core

Info

Publication number: CN215522102U
Application number: CN202120548404.XU
Authority: CN
Inventors: 黄胜华
Original assignee: Renard Fluid Intelligence Technology Jiangsu Ltd By Share Ltd
Current assignee: Renard Fluid Intelligence Technology Jiangsu Ltd By Share Ltd
Priority date: 2021-03-16
Filing date: 2021-03-16
Publication date: 2022-01-14
Anticipated expiration: 2031-03-16

Abstract

The utility model provides a check valve core, which comprises a valve body, the valve clack, dead lever and fixed pipe, the top and the valve body of fixed pipe are connected, the top of dead lever sets up at fixed pipe, the bottom and the valve clack of dead lever are connected, be provided with first spring in the fixed pipe, the top of first spring is provided with the movable block, be provided with the threaded rod in the fixed pipe, the threaded rod passes fixed pipe and valve body, and with fixed pipe top and valve body threaded connection, the below of valve clack is provided with the sleeve pipe, be provided with the second spring in the sleeve pipe, the dead lever passes the valve clack, and the bottom sets up in the sleeve pipe, the lower extreme of valve clack is provided with the boss, the side of boss is to the inboard slope setting, the lower surface of boss sets up to circular-arc, the boss side is provided with the wearing layer, the valve clack lower surface in the boss outside is provided with the elastic ring, be provided with sealed face on the valve body of boss side. The non-return effect can be realized to valve clack, dead lever and fixed pipe, and wearing layer and elastic ring can the shock attenuation, and the buffering subassembly can make the speed that the valve clack descends reduce, improves the life-span of valve clack.

Description

Check valve core

Technical Field

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

Background

The check valve is one of valves, mainly used for preventing medium from flowing back, the structure of the valve core of the existing check valve mainly comprises a check structure and other auxiliary structures, the check structure mainly comprises a valve clack and a fixed valve clack, the auxiliary structures mainly comprise a sealing surface and other structures corresponding to the check structure in the valve body, the valve clack is mainly controlled by the self weight of the valve clack and medium pressure, so that the valve is switched on and off, the service life of the check valve is related to the flowing condition of the medium in a pipeline, if the medium pressure at two sides of the valve clack is close to balance and continuously changes, the valve clack and the valve body are continuously impacted, the valve clack is broken, the medium impacts on the valve clack, the sealing surface of the valve clack is abraded, the valve clack cannot be sealed, impurities in the medium fall on the sealing surface of the valve body, leakage can also be caused, and the check valve is opened by the pressure of the medium, and the pressure required for opening is fixed, only enough medium pressure can be enough, if the medium pressure is smaller, the check valve can not be conducted, but sometimes the medium pressure in the pipeline can not reach the degree of opening the valve.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to overcome the defects in the prior art, the utility model provides a check valve core.

(II) technical scheme

In order to achieve the purpose, the utility model provides the following technical scheme: a check valve core comprises a valve body, a valve clack, a fixed rod and a fixed pipe, wherein the top end of the fixed pipe is connected with the valve body, the top end of the fixed rod is arranged on the fixed pipe, the bottom end of the fixed rod is connected with the valve clack, a first spring is arranged in the fixed pipe, a moving block is arranged at the top end of the first spring, a threaded rod is arranged in the fixed pipe, the threaded rod penetrates through the fixed pipe and the valve body and is in threaded connection with the top end of the fixed pipe and the valve body, a sleeve is arranged below the valve clack, a second spring is arranged in the sleeve, the fixed rod penetrates through the valve clack, the bottom end of the fixed rod is arranged in the sleeve, a boss is arranged at the lower end of the valve clack, the side surface of the boss is inclined towards the inner side, the lower surface of the boss is arc-shaped, a wear-resistant layer is arranged on the side surface of the boss, and an elastic ring is arranged on the lower surface of the valve clack outside the boss, the improved valve is characterized in that a first sealing surface is arranged on the valve body on the side face of the boss, a second sealing surface is arranged on the inner wall of the valve body above the first sealing surface, the first sealing surface and the boss are arranged correspondingly, a sealing groove is arranged on the second sealing surface, the sealing groove and the elastic ring are arranged correspondingly, and a buffer assembly is arranged on the fixing rod.

Preferably, the buffering subassembly includes buffer board and sealing washer, the buffer board sets up on the dead lever, the sealing washer sets up the side at the buffer board, the buffer board sets up to the back taper, the inside buffering space that is provided with of valve body of buffer board top, be provided with the pressure release hole on the buffer board.

In a further preferred mode, the bottom surface of the sealing groove is obliquely arranged, and a plurality of water drainage grooves are formed in one side, close to the first sealing surface, of the sealing groove.

In a further preferred embodiment, the bottom surface of the elastic ring is V-shaped.

In a further preferred form, the upper surface of the flap is provided with a recess which extends downwardly into the boss.

In a further preferred mode, a plurality of reinforcing rods are horizontally arranged in the groove, one end of each reinforcing rod is connected with the fixing rod, and the other end of each reinforcing rod is connected with the inner wall of the groove.

In a further preferred mode, the fixing rod is hollow in the middle, and two ends of the fixing rod are opened.

(III) advantageous effects

Compared with the prior art, the utility model provides a check valve core, which has the following beneficial effects:

in the utility model, the check function can be realized through the valve clack, the fixed rod and the fixed pipe, the valve clack is jacked up below the medium valve clack in the valve body, so that a medium can pass through the valve body, the weight of the valve clack can be offset through the sleeve and the second spring, when the pressure of the medium is not very large, the valve clack can be jacked up easily, so that the medium can pass through the valve body, the opening pressure of the valve clack can be increased through the first spring and the threaded rod, so that the valve clack can be opened only by the medium with higher pressure, the movable block can move downwards through the threaded rod, so that the first spring is contacted with the fixed rod, the pressure required by the lifting of the valve clack is increased through the elasticity of the first spring, the wear-resistant layer is preferably made of a material with elasticity, the shock absorption can be realized through the wear-resistant layer and the elastic ring, the impact force of the medium on the boss is smaller than the impact force of the water flow directly impacting on the valve clack, can increase the life of valve clack, first sealed face slope moreover can make the impurity landing, reduces impurity to sealed influence, and the boss can be protected to the wearing layer, and the elastic ring inserts in the seal groove, can increase sealed effect, and impurity can weaken impurity in the seal groove equally to sealed influence, and the buffering subassembly can make the speed that the valve clack descends reduce, makes on its striking that can not be quick to the valve body, improves the life-span of valve clack.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the valve flap, boss and fixing rod of the present invention;

FIG. 3 is a schematic top view of the first and second sealing surfaces of the present invention;

FIG. 4 is a schematic top view of the buffer plate according to the present invention;

fig. 5 is an enlarged view of a portion of a structure in fig. 1.

In the figure: 1. a valve body; 2. a valve flap; 3. fixing the rod; 4. a fixed tube; 5. a first spring; 6. a moving block; 7. a threaded rod; 8. a sleeve; 9. a second spring; 10. a boss; 11. a wear layer; 12. an elastic ring; 13. a first sealing surface; 14. a second sealing surface; 15. a sealing groove; 16. a buffer plate; 17. a seal ring; 18. a buffer space; 19. a pressure relief vent; 20. a water discharge tank; 21. a groove; 22. a reinforcing rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

referring to fig. 1-5, a check valve cartridge includes a valve body 1, a valve flap 2, a fixing rod 3 and a fixing tube 4, wherein a top end of the fixing tube 4 is connected to the valve body 1, a top end of the fixing rod 3 is disposed on the fixing tube 4, a bottom end of the fixing rod 3 is connected to the valve flap 2, a first spring 5 is disposed in the fixing tube 4, a moving block 6 is disposed at a top end of the first spring 5, a threaded rod 7 is disposed in the fixing tube 4, the threaded rod 7 penetrates through the fixing tube 4 and the valve body 1 and is in threaded connection with the top end of the fixing tube 4 and the valve body 1, a sleeve 8 is disposed below the valve flap 2, a second spring 9 is disposed in the sleeve 8, the fixing rod 3 penetrates through the valve flap 2, the bottom end of the fixing rod is disposed in the sleeve 8, a boss 10 is disposed at a lower end of the valve flap 2, a side surface of the boss 10 is inclined inward, and a lower surface of the boss 10 is arc-shaped, the utility model discloses a valve, including boss 10, valve clack 2, first sealed face 13, be provided with the sealed face 14 of second on the 1 inner wall of valve body above the first sealed face 13, first sealed face 13 corresponds the setting with boss 10, be provided with seal groove 15 on the sealed face 14 of second, seal groove 15 corresponds the setting with elastic ring 12, be provided with buffer assembly on the dead lever 3, boss 10 side is provided with wearing layer 11, the valve clack 2 lower surface in the boss 10 outside is provided with elastic ring 12, be provided with first sealed face 13 on the valve body 1 of boss 10 side, be provided with the sealed face 14 of second, seal groove 15 corresponds the setting with elastic ring 12.

In this embodiment, the buffer assembly includes buffer board 16 and sealing washer 17, buffer board 16 sets up on dead lever 3, sealing washer 17 sets up the side at buffer board 16, buffer board 16 sets up to the back taper, the inside buffer space 18 that is provided with of valve body 1 above buffer board 16, be provided with pressure release hole 19 on the buffer board 16. Form a buffer space 18 through buffer board 16 and valve body 1, when valve clack 2 and dead lever 3 remove, buffer board 16 also can remove, make the inside medium of buffer space 18 that buffer board 16 and valve body 1 constitute flow from pressure release hole 19, pressure release hole 19 is smaller, no matter be gas or liquid through pressure release hole 19 the velocity of flow can not be too fast, this moving speed that just leads to buffer board 16 can not be very fast, and then make valve clack 2 moving speed reduce, avoid valve clack 2 to strike first sealed face 13 with a higher speed, lead to valve clack 2 to damage.

In this embodiment, the bottom surface of the sealing groove 15 is inclined, and a plurality of water discharge grooves 20 are disposed on one side of the sealing groove 15 close to the first sealing surface 13. The drainage groove 20 is provided to facilitate the discharge of the liquid and impurities in the sealing groove 15 after the elastic pad enters the sealing groove 15.

In this embodiment, the bottom surface of the elastic ring 12 is V-shaped. Facilitating the entry of the resilient ring 12 into the sealing groove 15.

In this embodiment, the upper surface of the valve flap 2 is provided with a groove 21, and the groove 21 extends downwards into the boss 10. The groove 21 increases the contact area between the upper surface of the valve clack 2 and the medium, so that the pressure of the medium on the valve clack 2 is larger, the contact between the valve clack 2 and the first sealing surface 13 and between the boss 10 and the second sealing surface 14 is tighter, and the weight of the valve clack 2 and the boss 10 can be reduced by the groove 21.

In this embodiment, a plurality of reinforcing rods 22 are horizontally arranged in the groove 21, one end of each reinforcing rod 22 is connected with the fixing rod 3, and the other end of each reinforcing rod 22 is connected with the inner wall of the groove 21. The reinforcing rod 22 can increase the strength of the valve clack 2 and the boss 10, so that the valve clack 2 and the boss 10 are not easy to damage.

In this embodiment, the fixing rod 3 is hollow, and the two ends of the fixing rod 3 are open. The fixing rod 3 and the fixing tube 4 or the sleeve 8 are arranged in a sealing mode. The hollow fixing rod 3 is a pipe and can communicate the fixing pipe 4 with the sleeve 8, the pressure inside the sleeve 8 and the fixing pipe 4 can be kept unchanged in the process that the fixing rod 3 moves up and down, the fixing rod 3 and the fixing pipe 3 can be sealed, and the first spring 5 and the second spring 9 are prevented from being damaged.

The working principle is as follows:

in summary, when the valve body 1 is installed on a pipeline in use, when a medium flows through the inside of the pipeline, the valve flap 2 is in a closed state, the fixing rod 3 compresses the second spring 9 in the sleeve 8, the elastic force of the second spring 9 can counteract most of the gravity of the fixing rod 3, the valve flap 2, the boss 10 and the buffer plate 16, at this time, the opening pressure of the valve flap 2 is minimum, when the medium flows through the valve body 1, the pressure of the medium can push up the valve flap 2, so that the valve flap 2 is in an open state, when the medium pushes up the valve flap 2, the boss 10, the fixing rod 3 and the buffer plate 16 move upwards, the buffer plate 16 extrudes the buffer space 18, so that the buffer space 18 becomes small, when the medium flows through the buffer space 18 for the first time, the inside is air, and when the buffer space 18 becomes small, the inside air or the medium can flow out from the pressure relief hole 19, the pressure relief holes 19 are small, the flow rate of air or medium cannot be too fast, so that the moving speed of the buffer plate 16, the fixed rod 3, the valve clack 2 and the boss 10 cannot be too fast, after the valve clack 2 is opened, the medium impacts the boss 10 and then flows out from the outlet of the valve body 1, when the medium impacts the boss 10, the lower surface of the boss 10 is arc-shaped, the side surface is inclined, so that the resistance is reduced when the medium impacts the boss 10, the impact force on the boss 10 is reduced, the boss 10 is not easy to wear, the wear-resistant layer 11 is subjected to the washing of the medium and is worn firstly, when the medium flows back, under the pressure of the medium, the valve clack 2, the boss 10 and the buffer plate 16 can move downwards, the buffer space 18 is enlarged, the medium flows into the buffer space 18 through the pressure relief holes 19, the flow rate of the medium flowing through the pressure relief holes 19 cannot be very high, namely, the pressure relief shows that the speed of the buffer space 18 is not very fast, the buffer plate 16, the fixing rod 3, the valve clack 2 and the boss 10 do not move downwards quickly, when the boss 10 and the valve clack 2 impact the first sealing surface 13 and the second sealing surface 14, the impact force is not too high, the valve clack 2 and the boss 10 are prevented from being damaged after impacting the valve body 1, after the valve clack 2 and the boss 10 impact the valve body 1, the wear-resistant layer 11 is contacted with the first sealing surface 13, the side surfaces of the first sealing surface 13 and the boss 10 are inclined, impurities falling on the upper surface can be washed down by media, after the elastic ring 12 on the lower surface of the valve clack 2 is inserted into the sealing groove 15, media in the sealing groove 15 are discharged, the impurities can also be discharged, the residual impurities cannot influence the sealing effect of the elastic ring 12 and the sealing groove 15, the media can be prevented from leaking through the wear-resistant layer 11 and the elastic ring 12, if the opening pressure of the valve clack 2 needs to be adjusted, the screw rod is rotated, so that the moving block 6 moves downwards, make first spring 5 contact dead lever 3 to the compression, first spring 5 gives dead lever 3 a decurrent power, and then makes the pressure grow between valve clack 2 and the valve body 1, just so can make opening pressure grow, because of the existence of hostile spring, opening pressure control range can be wider, and do not receive the restriction of valve clack 2, dead lever 3, boss 10 etc..

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a check valve core, includes valve body (1), valve clack (2), dead lever (3) and fixed pipe (4), the top and valve body (1) of fixed pipe (4) are connected, the top setting of dead lever (3) is at fixed pipe (4), the bottom and the valve clack (2) of dead lever (3) are connected its characterized in that: the improved valve is characterized in that a first spring (5) is arranged in the fixed pipe (4), a moving block (6) is arranged at the top end of the first spring (5), a threaded rod (7) is arranged in the fixed pipe (4), the threaded rod (7) penetrates through the fixed pipe (4) and the valve body (1) and is in threaded connection with the top end of the fixed pipe (4) and the valve body (1), a sleeve (8) is arranged below the valve flap (2), a second spring (9) is arranged in the sleeve (8), the fixed rod (3) penetrates through the valve flap (2), the bottom end of the fixed rod is arranged in the sleeve (8), a boss (10) is arranged at the lower end of the valve flap (2), the side surface of the boss (10) is inclined inwards, the lower surface of the boss (10) is arc-shaped, a wear-resistant layer (11) is arranged on the side surface of the boss (10), and an elastic ring (12) is arranged on the lower surface of the valve flap (2) outside the boss (10), be provided with first sealed face (13) on valve body (1) of boss (10) side, be provided with the sealed face of second (14) on valve body (1) inner wall of first sealed face (13) top, first sealed face (13) and boss (10) correspond the setting, be provided with seal groove (15) on the sealed face of second (14), seal groove (15) and elastic ring (12) correspond the setting, be provided with the buffering subassembly on dead lever (3).

2. The check valve cartridge according to claim 1, wherein: the buffer assembly comprises a buffer plate (16) and a sealing ring (17), wherein the buffer plate (16) is arranged on the fixed rod (3), the sealing ring (17) is arranged on the side surface of the buffer plate (16), the buffer plate (16) is arranged into an inverted cone, a buffer space (18) is arranged inside the valve body (1) above the buffer plate (16), and a pressure relief hole (19) is formed in the buffer plate (16).

3. The check valve cartridge according to claim 1, wherein: the bottom surface of the sealing groove (15) is obliquely arranged, and one side, close to the first sealing surface (13), of the sealing groove (15) is provided with a plurality of water drainage grooves (20).

4. The check valve cartridge according to claim 1, wherein: the bottom surface of the elastic ring (12) is V-shaped.

5. The check valve cartridge according to claim 1, wherein: a groove (21) is formed in the upper surface of the valve clack (2), and the groove (21) extends downwards into the boss (10).

6. The check valve cartridge according to claim 1, wherein: a plurality of reinforcing rods (22) are horizontally arranged in the groove (21), one end of each reinforcing rod (22) is connected with the fixing rod (3), and the other end of each reinforcing rod is connected with the inner wall of the groove (21).

7. The check valve cartridge according to claim 1, wherein: the middle of the fixing rod (3) is hollow, and openings are formed in two ends of the fixing rod (3).