CN211117810U

CN211117810U - Stop valve

Info

Publication number: CN211117810U
Application number: CN201922344612.3U
Authority: CN
Inventors: 王达国
Original assignee: Yuhuan Dadi Copper Co ltd
Current assignee: Yuhuan Dadi Copper Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-07-28
Anticipated expiration: 2029-12-24

Abstract

The utility model provides a stop valve belongs to valve manufacturing technical field. It has solved the current not good scheduling problem of stop valve non return effect. This stop valve includes the valve body, the valve rod, case and valve gap, the valve body has the disk seat that the end and the play water end of intercommunication intake had in end and the valve body of intaking, valve gap and valve body threaded connection, the outer end of valve rod and valve gap threaded connection and valve rod is connected with the hand wheel, the inner of valve rod supplies the case axial to wear to establish, the case bottom inlays and is equipped with sealed the pad, the valve rod cover is equipped with the spring that provides elasticity and make sealed pad remain sealed in the disk seat trend throughout, it has the water supply connector that is the tube-shape to intake end threaded connection, be equipped with the elastic component that is tube-shape and axial and runs through in the water supply connector, still be equipped with in the water supply connector and be located between intake end and the elastic component. The stop valve has the advantages of good check effect, capability of reducing noise and damage caused by sudden increase of water pressure of inlet water and the like.

Description

Stop valve

Technical Field

The utility model belongs to the technical field of the valve is made, a stop valve is related to.

Background

The stop valve is a valve with a starting and closing part driven by a valve rod to move back and forth along the central line of a valve seat, and the valve rod of the valve has relatively short starting or closing stroke and very reliable cutting function, so the stop valve is very suitable for cutting or regulating flow.

For example, chinese patent literature discloses a one-way stop valve [ application number: 201520449321. X; authorization notice number: CN204704440U ], which comprises a valve body, a valve seat, a valve clack, a valve cover and a hand wheel, wherein the valve body is internally provided with an inlet channel and an outlet channel, the valve seat is arranged between the inlet channel and the outlet channel, the valve clack and the valve seat are correspondingly arranged, one end of a valve rod is fixedly connected with the hand wheel, the other end of the valve rod is movably connected with the valve clack, the valve cover is sleeved with the valve rod, the valve cover and the valve rod are provided with matched threads, the valve clack is provided with a pin shaft, the valve rod is provided with a chute corresponding to.

The one-way stop valve has the function of preventing media from flowing backwards, but the blockage is not quick enough when the backflow occurs, the non-return effect is not ideal enough, and in addition, because the fluid has kinetic energy and compressibility of a certain degree, the internal pressure of the valve body is too high when the water pressure in the water inlet channel is increased suddenly, pressure impact causes the stress on the inner wall of the valve body to generate noise, and the pipeline pressure on the rear side of the water outlet channel is increased suddenly to cause the damage of a water meter, a pressure meter and a thermometer.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a non return is effectual, can reduce the stop valve of the noise and the harm that water pressure suddenly increased and arouse of intaking.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a stop valve, includes valve body, valve rod, case and valve gap, the valve body have into water the end and go out the water end and have the intercommunication and intake the disk seat of end and play water end in the valve body, valve gap and valve body threaded connection, the outer end of valve rod and valve gap threaded connection and valve rod be connected with the hand wheel, the inner confession case axial of valve rod is worn to establish, case bottom inlay and be equipped with sealed the pad, a serial communication port, the valve rod cover be equipped with and provide elasticity and make sealed pad remain the spring sealed in the disk seat trend all the time, the end threaded connection of intaking have the water supply connector that is the tube-shape, the water supply connector in be equipped with the elastic component that is tube-shape and axial and runs through, the water supply connector in still be equipped with and be located between water inlet end and the elastic component, can be with the shutoff.

In foretell a stop valve, the inner wall of water supply connector outer end keep off shoulder one, the inner wall at water supply connector middle part keep off shoulder two, the water supply connector internal fixation have and contradict in the spacing ring that keeps off shoulder two, the elastic component axial spacing keep off between shoulder one and the spacing ring.

In the above stop valve, the elastic member is a foam or rubber body, and the outer wall of the elastic member has a plurality of annular grooves.

In foretell stop valve, block structure include the guide that links firmly in the water supply connector, the guide include outer lane, inner circle, outer lane and inner circle link into an organic whole through a plurality of connection ribs, the inner circle in wear to be equipped with the shutoff core, the shutoff core inlays towards the outer end of spacing ring and is equipped with the pressure spring that provides elasticity and make the sealing block keep sealing up in the spacing ring trend towards the shutoff core cover, the inner of shutoff core links firmly the shutoff block that is used for the shutoff to intake the end.

In the stop valve, the water inlet end is fixedly connected with a plugging ring which is axially communicated and is used for sealing and abutting against the plugging block.

In the stop valve, the outer wall of the bottom end of the valve core is provided with a convex ring for the sealing gasket to abut against, and the edge of the convex ring is provided with a covered edge which is turned over and covers the outer wall of the sealing gasket.

In the stop valve, the outer end of the plugging core is provided with a boss for the sealing block to abut against, and the edge of the boss is provided with a surrounding edge which is turned over and covers the outer wall of the sealing block.

In the stop valve, the inner end of the plugging core is inserted with a support member supported at the bottom of the plugging block in an interference fit manner, and the edge of the support member is provided with a flange which is turned over and covers the outer wall of the plugging block.

Compared with the prior art, the check of this stop valve is effectual, can effectively avoid backward flow pollution, and the elastic component plays buffering damping effect moreover, reduces the water pressure of intaking and increases suddenly and the noise and the impact that cause, and parts such as water gauge, manometer, the thermometer on the shutoff structure avoids water pressure to increase suddenly and leads to the rear pipeline damage, has prolonged life.

Drawings

Fig. 1 is a structural sectional view of the stop valve.

Fig. 2 is a front view of the guide member of the shutoff valve.

In the figure, 1, a valve body; 2. a valve stem; 3. a valve core; 31. a convex ring; 32. edge covering; 4. a valve cover; 5. a water inlet end; 6. a water outlet end; 7. a valve seat; 8. a hand wheel; 9. a gasket; 10. a spring; 11. a water inlet joint; 12. an elastic member; 13. a first blocking shoulder; 14. a second shoulder; 15. a limiting ring; 16. an annular groove; 17. a guide member; 171. an outer ring; 172. an inner ring; 173. a connecting rib; 18. plugging the core; 181. a boss; 182. surrounding edges; 19. a sealing block; 20. a pressure spring; 21. a plugging block; 22. a plugging ring; 23. a support member; 231. and (5) flanging.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, the stop valve includes a valve body 1, a valve rod 2, a valve core 3 and a valve cover 4, the valve body 1 has a water inlet end 5 and a water outlet end 6, and a valve seat 7 communicating the water inlet end 5 and the water outlet end 6 is arranged in the valve body 1, the valve cover 4 is in threaded connection with the valve body 1, the valve rod 2 is in threaded connection with the valve cover 4, and the outer end of the valve rod 2 is connected with a hand wheel 8, the inner end of the valve rod 2 is axially penetrated by the valve core 3, a sealing gasket 9 is embedded at the bottom end of the valve core 3, the valve rod 2 is sleeved with a spring 10 providing elasticity to enable the sealing gasket 9 to always keep sealed in the valve seat 7, the water inlet end 5 is in threaded connection with a cylindrical water inlet joint 11, an elastic member 12 which is cylindrical and axially penetrates is arranged in the water inlet joint 11, the water inlet joint 11 is further provided.

When the stop valve is used, when the water outlet end 6 returns, the returned water pressure and the elasticity of the spring 10 enable the sealing gasket 9 of the valve core 3 to be quickly sealed on the valve seat 7, and the check is quick; when the water pressure of intaking increases suddenly, elastic component 12 plays the cushioning effect, and the noise reduction plays certain guard action to water supply connector 11, avoids water supply connector 11 damaged, and the shutoff structure will intake end 5 shutoff moreover, avoids the water pressure of going out water end 6 to increase suddenly and leads to parts such as water gauge, manometer, thermometer on the rear pipeline to damage, has prolonged life.

In more detail, the inner wall of the outer end of the water inlet joint 11 is provided with a first blocking shoulder 13, the inner wall of the middle part of the water inlet joint 11 is provided with a second blocking shoulder 14, a limiting ring 15 which is abutted against the second blocking shoulder 14 is fixed in the water inlet joint 11, the elastic part 12 is axially limited between the first blocking shoulder 13 and the limiting ring 15, the limiting ring 15 is fixedly connected in the water inlet joint 11 in an interference fit manner in the embodiment, a clamp spring which is abutted against the limiting ring 15 can be embedded in the inner wall of the water inlet joint 11 during actual manufacturing, so that the fixing of the limiting ring 15 is realized, one end of the elastic part 12 is abutted against the first blocking shoulder 13, the other end of the elastic part 12 is abutted against the limiting ring 15, and the elastic part 12; elastic component 12 is the foaming body or the rubber body, and the outer wall of elastic component 12 has a plurality of rings of annular groove 16, and elastic component 12 is the rubber body in this embodiment, and annular groove 16 quantity is two rings and axial equipartition, and annular groove 16 has increased the deformation volume of elastic component 12 for elastic component 12's buffering effect is good, effectively reduces the noise.

As shown in fig. 1 and fig. 2, the blocking structure includes a guide member 17 fixedly connected in the water inlet joint 11, the guide member 17 includes an outer ring 171 and an inner ring 172, the outer ring 171 and the inner ring 172 are connected into a whole through three connecting ribs 173, a blocking core 18 penetrates through the inner ring 172, a sealing block 19 is embedded in the blocking core 18 towards the outer end of the limit ring 15, a pressure spring 20 which provides elastic force to enable the sealing block 19 to keep sealing on the limit ring 15 tends is sleeved on the blocking core 18, and a blocking block 21 for blocking the water inlet end 5 is fixedly connected to the inner end of the blocking core 18.

The outer end of the pressure spring 20 abuts against the plugging core 18, the inner end of the pressure spring 20 abuts against the guide piece 17, when water normally enters, the water pressure of the water entering overcomes the elasticity of the pressure spring 20 to enable the sealing block 19 to be separated from the limiting ring 15, but the water pressure of the water entering cannot enable the plugging core 18 to completely displace towards the water inlet end 5 side, at the moment, the plugging block 21 cannot plug the water inlet end 5, the water enters the water inlet end 5 through a gap between the outer ring 171 and the inner ring 172, then flows through the valve seat 7, and then water exits from the water outlet end 6; during backflow, if the valve core 3 is not sealed timely enough, the pressure spring 20 and the plugging core 18 also play a role in non-return, namely the sealing block 19 is sealed on the limiting ring 15 by the elastic force of the pressure spring 20 matched with the backflow pressure, so that the non-return effect is improved; when the water pressure of intaking increases suddenly, the water pressure of intaking overcomes pressure spring 20 elasticity, and shutoff core 18 is to the 5 lateral displacements of end of intaking, and shutoff piece 21 shutoff is in end 5 of intaking to play the shutoff effect, when the water pressure of intaking descends to normal scope, the elasticity of pressure spring 20 makes the 18 displacements of shutoff core make shutoff piece 21 break away from end 5 of intaking, the normal logical water of reply.

The water inlet end 5 is fixedly connected with a plugging ring 22 which is axially communicated and is used for the plugging block 21 to be in sealing contact with, so that the water inlet end 5 does not need to be provided with a retaining shoulder, the wall thickness can be reduced, materials are saved, the manufacturing is convenient, and the plugging effect is good due to the fact that the plugging ring 22 is matched with the plugging block 21; the outer wall of the bottom end of the valve core 3 is provided with a convex ring 31 for the sealing gasket 9 to abut against, the edge of the convex ring 31 is provided with an edge 32 which is turned over and coated on the outer wall of the sealing gasket 9, and the edge 32 prevents the sealing gasket 9 from repeatedly deforming and the outer wall from warping, so that the service life is prolonged, and the sealing performance is ensured; the outer end of the plugging core 18 is provided with a boss 181 against which the sealing block 19 abuts, the edge of the boss 181 is provided with a surrounding edge 182 which is turned over and covers the outer wall of the sealing block 19, and the surrounding edge 182 prevents the sealing block 19 from repeatedly deforming and the outer wall from warping, so that the service life is prolonged, and the sealing property is ensured; the inner end of the plugging core 18 is penetrated with the support piece 23 supported at the bottom of the plugging block 21 in an interference fit manner, the edge of the support piece 23 is provided with a turned edge 231 which is turned over and coated on the outer wall of the plugging block 21, so that the repeated deformation of the plugging block 21 and the warping of the outer wall are avoided, the service life is prolonged, and the plugging effect is ensured.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A stop valve comprises a valve body (1), a valve rod (2), a valve core (3) and a valve cover (4), wherein the valve body (1) is provided with a water inlet end (5) and a water outlet end (6), a valve seat (7) communicated with the water inlet end (5) and the water outlet end (6) is arranged in the valve body (1), the valve cover (4) is in threaded connection with the valve body (1), the valve rod (2) is in threaded connection with the valve cover (4), the outer end of the valve rod (2) is connected with a hand wheel (8), the inner end of the valve rod (2) is axially penetrated by the valve core (3), a sealing gasket (9) is embedded at the bottom end of the valve core (3), the stop valve is characterized in that the valve rod (2) is sleeved with a spring (10) which provides elastic force to enable the sealing gasket (9) to always keep the trend of being sealed with the valve seat (7), the water inlet end (, the water inlet connector (11) in be equipped with elastic component (12) that are the tube-shape and the axial runs through, water inlet connector (11) in still be equipped with and be located into between water end (5) and elastic component (12), can be with the block structure of intaking end (5) shutoff when intake water pressure increases suddenly.

2. The stop valve of claim 1, characterized in that, the inner wall of the outer end of the water inlet joint (11) is provided with a first blocking shoulder (13), the inner wall of the middle part of the water inlet joint (11) is provided with a second blocking shoulder (14), a limiting ring (15) which is abutted against the second blocking shoulder (14) is fixed in the water inlet joint (11), and the elastic part (12) is axially limited between the first blocking shoulder (13) and the limiting ring (15).

3. A shut-off valve according to claim 2, characterised in that the resilient member (12) is a foam or rubber body, the outer wall of the resilient member (12) having a plurality of annular grooves (16).

4. A stop valve according to claim 1 or 2 or 3, characterized in that the blocking structure comprises a guide member (17) fixedly connected with the water inlet joint (11), the guide member (17) comprises an outer ring (171) and an inner ring (172), the outer ring (171) and the inner ring (172) are connected into a whole through a plurality of connecting ribs (173), a blocking core (18) is arranged in the inner ring (172) in a penetrating manner, a sealing block (19) is embedded in the outer end of the blocking core (18) facing the limiting ring (15), the blocking core (18) is sleeved with a pressure spring (20) which provides elasticity to enable the sealing block (19) to keep sealed in the limiting ring (15), and the inner end of the blocking core (18) is fixedly connected with a blocking block (21) for blocking the water inlet end (5).

5. A stop valve as claimed in claim 4, characterized in that the inlet end (5) is connected to a blocking ring (22) which extends axially through the inlet end and against which a blocking piece (21) sealingly abuts.

6. A stop valve according to claim 5, characterized in that the outer wall of the bottom end of the valve core (3) is provided with a convex ring (31) for the gasket (9) to abut against, and the edge of the convex ring (31) is provided with a covered edge (32) which is folded and covers the outer wall of the gasket (9).

7. A stop valve according to claim 6, characterized in that the outer end of the plug (18) has a boss (181) against which the sealing block (19) abuts, and the edge of the boss (181) has a peripheral edge (182) folded over and covering the outer wall of the sealing block (19).

8. A stop valve according to claim 7, characterized in that the inner end of the blocking core (18) is inserted with interference fit with a support (23) supported at the bottom of the block (21), and the edge of the support (23) has a flange (231) folded and coated on the outer wall of the block (21).