CN220082207U

CN220082207U - Stop valve

Info

Publication number: CN220082207U
Application number: CN202321107719.6U
Authority: CN
Inventors: 项乾; 李官林; 姜红星
Original assignee: Yancheng Precision Casting Co ltd
Current assignee: Yancheng Precision Casting Co ltd
Priority date: 2023-05-10
Filing date: 2023-05-10
Publication date: 2023-11-24
Anticipated expiration: 2033-05-10

Abstract

The utility model relates to a stop valve, which comprises a valve body, wherein a connecting pipe is arranged on the upper end face of the valve body, a valve cover is arranged on the upper end face of the connecting pipe, the valve cover is installed with a connecting pipe bolt, a threaded hole is formed in the upper end face of the valve cover, a threaded rod is arranged in the threaded hole, a hand wheel is fixedly arranged at the upper end of the threaded rod, the lower end of the threaded rod penetrates through the valve cover and is provided with a jacking block, a fixed plate is arranged in the connecting pipe, a transmission rod is slidably arranged in the fixed plate, the lower end of the transmission rod penetrates through the fixed plate and is provided with a valve clack, a spring is fixedly arranged at the upper end of the valve clack, the other end of the spring is fixedly connected with the fixed plate, and the upper end of the transmission rod penetrates through the fixed plate and is provided with a pressing block, so that when the jacking block is not contacted with the pressing block, the valve clack is jacked into a circulation port by the spring under the action of the spring, and a check effect is achieved, and when a conveying object exists in the valve body, the valve clack is jacked by the self pressure, so that the conveying object is convenient.

Description

Stop valve

Technical Field

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

Background

The stop valve is used as a very common opening and closing valve, and is used for connecting or cutting off a medium in a pipeline by utilizing a valve clack, and the stop valve can only be fully opened or fully closed. The stop valve has small fluid resistance, small external force required by opening and closing, simple shape and good casting manufacturability, and is the most widely used valve. The friction force between sealing surfaces in the opening and closing process is small, so that the sealing structure is durable, low in opening difficulty, easy to manufacture and convenient to maintain, and is not only suitable for medium-low pressure environments, but also suitable for high-pressure environments. The closing principle of the stop valve is that the sealing surface of the valve clack is tightly attached to the sealing surface of the valve seat by means of the pressure of the valve lever, so that the medium circulation is prevented, but most of stop valves in the prior art do not have a non-return function, and when the stop valve is in an open state, fluid in an outlet cavity is likely to flow back, so that the use effect is poor; and most of the traditional stop valves are of an integrated structure, and when the inside of the valve body is blocked, the blocking objects are not well cleaned.

Disclosure of Invention

(one) solving the technical problems

Aiming at the problems in the prior art, the utility model provides a stop valve to solve the technical problems in the background art.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a stop valve, includes the valve body, the up end of valve body is equipped with the connecting pipe, the up end of connecting pipe is equipped with the valve gap, valve gap and connecting pipe bolt installation, the screw hole has been seted up to the up end of valve gap, the inside of screw hole is equipped with the threaded rod, the upper end of threaded rod is fixed and is equipped with the hand wheel, and the lower extreme passes the valve gap and is equipped with the kicking block, the inside of connecting pipe is equipped with the fixed plate, the inside slip of fixed plate is equipped with the transfer line, the lower extreme of transfer line passes the fixed plate and is equipped with the valve clack, the upper end of valve clack is fixed and is equipped with the spring, the other end and the fixed plate fixed connection of spring, the upper end of transfer line passes the fixed plate and is equipped with down the briquetting, the lower terminal surface of briquetting is fixed and is equipped with spacing post, spacing post is provided with a plurality of and becomes circumference and arranges, the up end of fixed plate has seted up spacing hole, spacing post all with spacing hole slidable mounting, just be located the lower extreme on the outer wall of valve body and has seted up the clearance hole.

Preferably, the outer end of clearance hole and be located the fixed installing frame that is equipped with on the outer wall of valve body, the lower extreme of installing frame is equipped with the connecting plate, the up end of connecting plate is equipped with the sealing plug, the sealing plug is located the inside of clearance hole, the connecting hole has all been seted up on the lower terminal surface of connecting plate and being located four angles, the mounting hole has been seted up to the lower terminal surface correspondence of installing frame, the inside of mounting hole and connecting hole is equipped with set screw, is convenient for clear up the inside plug of valve body.

In a further preferred embodiment, the water inlet pipe is fixedly arranged at one end of the valve body, the water outlet pipe is fixedly arranged at the other end of the valve body, and the water inlet pipe and the water outlet pipe are fixedly provided with external flanges, so that the external pipelines can be conveniently connected.

In a further preferred embodiment, the valve body is provided with a circulation port at the lower end thereof, and a sealing ring is fixedly arranged on the inner wall of the circulation port, so as to facilitate the increase of the tightness between the valve clack and the circulation port.

In a further preferred embodiment, the upper end surface of the valve clack is fixedly provided with a sealing block, the lower end surface of the sealing block is provided with a first conical surface, the upper end of the sealing ring is provided with a second conical surface, the inclination of the first conical surface is equal to that of the second conical surface, and the sealing between the sealing ring and the sealing block is convenient to increase.

In a further preferred aspect, a gasket is disposed between the mounting frame and the connecting plate, so as to increase the tightness between the mounting frame and the connecting plate.

In a further preferred embodiment, when the spring is in a relaxed state, the valve flap is located inside the flow opening, so as to have a non-return effect on the transported objects.

(III) beneficial effects

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

1. according to the utility model, the connecting pipe, the valve cover, the threaded hole, the threaded rod, the hand wheel, the ejector block, the fixed plate, the transmission rod, the valve clack, the spring and the lower pressing block are arranged, so that when a user rotates the hand wheel to enable the ejector block to move upwards, the ejector block is separated from the lower pressing block, the spring can jack the valve clack into the circulation port by utilizing the self action to play a role of stopping, when a conveying object exists in the valve body, the conveying object can jack the valve clack upwards by utilizing the self pressure to facilitate conveying, and when the valve body is not used any more, the user can rotate the hand wheel to enable the ejector block to move downwards to apply pressure to the lower pressing block, and then the valve clack at the lower end of the valve clack completely enters the circulation port to play a role of stopping the conveying object, and through the arrangement of the limiting column and the limiting hole, the ejector block and the lower pressing block can be prevented from rotating together when the valve body rotates, and then damage the spring;

2. according to the utility model, the cleaning hole, the mounting frame, the connecting plate, the sealing plug, the connecting hole, the mounting hole and the fixing screw are arranged, so that when a plug appears in the valve body, the mounting frame and the connecting plate can be detached through the fixing screw, and then the sealing plug is pulled out, and at the moment, the plug in the valve body can be cleaned through the cleaning hole, and the use is convenient;

3. according to the utility model, the circulation port, the sealing ring, the sealing block, the first conical surface and the second conical surface are arranged, so that when a user rotates the hand wheel to enable the valve clack to enter the circulation port, the valve clack is contacted with the sealing ring at the moment, and the first conical surface on the sealing block at the upper end of the valve clack is contacted with the second conical surface on the sealing ring, so that the tightness between the valve clack and the circulation port is improved, and the leakage problem is prevented.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a shut-off valve according to the present utility model;

FIG. 2 is an overall cross-sectional view of a shut-off valve according to the present utility model;

FIG. 3 is a schematic view of the installation of the valve flap and seal ring of the present utility model;

FIG. 4 is an exploded view of the mounting frame, the connection plate and the set screw of the present utility model;

fig. 5 is a schematic view of the positions of the hand wheel and the top block on the threaded rod in the present utility model.

In the figure: 1. a valve body; 2. a connecting pipe; 3. a valve cover; 4. a threaded hole; 5. a threaded rod; 6. a hand wheel; 7. a top block; 8. a fixing plate; 9. a transmission rod; 10. a valve flap; 11. a spring; 12. pressing the block; 13. a limit column; 14. a limiting hole; 15. cleaning the hole; 16. a mounting frame; 17. a connecting plate; 18. a sealing plug; 19. a connection hole; 20. a mounting hole; 21. a fixing screw; 22. a water inlet pipe; 23. a drain pipe; 24. an external flange; 25. a flow port; 26. a seal ring; 27. a sealing block; 28. a first conical surface; 29. a second conical surface; 30. and a sealing gasket.

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.

Example 1:

referring to fig. 1-5, a stop valve comprises a valve body 1, a connecting pipe 2 is arranged on the upper end face of the valve body 1, a valve cover 3 is arranged on the upper end face of the connecting pipe 2, the valve cover 3 is mounted with the connecting pipe 2 through bolts, a threaded hole 4 is formed in the upper end face of the valve cover 3, a threaded rod 5 is arranged in the threaded hole 4, a hand wheel 6 is fixedly arranged at the upper end of the threaded rod 5, a lower end penetrates through the valve cover 3 and is provided with a top block 7, a fixing plate 8 is arranged in the connecting pipe 2, a transmission rod 9 is slidably arranged in the fixing plate 8, the lower end of the transmission rod 9 penetrates through the fixing plate 8 and is provided with a valve clack 10, a spring 11 is fixedly arranged at the upper end of the valve clack 10, the other end of the spring 11 is fixedly connected with the fixing plate 8, the upper end of the transmission rod 9 penetrates through the fixing plate 8 and is provided with a lower pressing block 12, limit columns 13 are fixedly arranged at the lower end face of the lower pressing block 12, the limit columns 13 are arranged in a plurality of and are circumferentially arranged, limit holes 14 are formed in the upper end face of the fixing plate 8, the limit columns 13 are slidably arranged with the limit holes 14, cleaning holes 15 are formed in the outer wall of the valve body 1 and are located at the lower end.

In this embodiment, the outer end of clearance hole 15 and be located the fixed mounting frame 16 that is equipped with on the outer wall of valve body 1, the lower extreme of mounting frame 16 is equipped with connecting plate 17, the up end of connecting plate 17 is equipped with sealing plug 18, sealing plug 18 is located the inside of clearance hole 15, connecting hole 19 has all been seted up on the lower terminal surface of connecting plate 17 and being located four angles, mounting hole 20 has been seted up to the lower terminal surface correspondence of mounting frame 16, the inside of mounting hole 20 and connecting hole 19 is equipped with set screw 21, the inside of user accessible set screw 21 comes to dismantle sealing plug 18, in order to clear up the inside plug of valve body 1.

In this embodiment, a water inlet pipe 22 is fixedly arranged at one end of the valve body 1, a water outlet pipe 23 is fixedly arranged at the other end, and external flanges 24 are fixedly arranged on the water inlet pipe 22 and the water outlet pipe 23, so that a user can connect the device with an external pipeline through the external flanges 24.

In this embodiment, the circulation port 25 is formed in the valve body 1 and located at the lower end of the valve clack 10, and the sealing ring 26 is fixedly disposed on the inner wall of the circulation port 25, so that the tightness between the valve clack 10 and the circulation port 25 can be increased.

In this embodiment, the sealing block 27 is fixedly disposed on the upper end surface of the valve clack 10, the first conical surface 28 is disposed on the lower end surface of the sealing block 27, the second conical surface 29 is disposed on the upper end of the sealing ring 26, the inclination of the first conical surface 28 is equal to that of the second conical surface 29, and when the valve clack 10 enters the flow port 25, the first conical surface 28 and the second conical surface 29 will contact at this time, so as to increase the tightness between the sealing block 27 and the sealing ring 26.

In the present embodiment, the gasket 30 is provided between the mounting frame 16 and the connection plate 17, so that the sealability between the mounting frame 16 and the connection plate 17 can be increased to prevent the leakage problem.

In this embodiment, the valve flap 10 is located inside the flow opening 25 when the spring 11 is in a relaxed state, so that the device can act as a check.

Example 2:

in sum, when the use, when the user makes kicking block 7 upwards remove through rotating hand wheel 6, this moment kicking block 7 separates with lower briquetting 12, spring 11 can utilize self effect to push valve clack 10 into circulation mouth 25, in order to play the effect of non return, when the inside of valve body 1 exists the transport thing, the transport thing can utilize self pressure to push valve clack 10 upwards, in order to carry conveniently, when no longer using, the user can make kicking block 7 move downwards through rotating hand wheel 6, in order to exert pressure to lower briquetting 12, and then make the valve clack 10 of its lower extreme fully enter into in the circulation mouth 25, this moment valve clack 10 just can contact with sealing washer 26 in the circulation mouth 25, the first conical surface 28 on its upper end sealing block 27 just can contact with the second conical surface 29 on sealing washer 26, in order to increase the leakproofness between valve clack 10 and the circulation mouth 25, prevent the problem that the leakage appears, when the inside jam appears in valve body 1 this moment, can first pull out mounting frame 16 and connecting plate 17 through set screw 21, afterwards will 18, just can be followed by removing 18 and can clear up through hole 15 to clear up the inside 1, the sealing plug 1, the convenient use of the sealing plug.

In all the above mentioned solutions, in which the connection between two components can be chosen according to the actual situation, a welded, bolt-and-nut-fitted connection, a bolt-or-screw connection or other known connection means, which are not described in detail herein, where reference is made to a written fixed connection, the preferred consideration is welding, although embodiments of the utility model have been shown and described, it will be understood by those skilled in the art that numerous variations, modifications, substitutions and alterations can be made to these embodiments without departing from the principle and spirit of the utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. Stop valve, comprising a valve body (1), characterized in that: the upper end face of the valve body (1) is provided with a connecting pipe (2), the upper end face of the connecting pipe (2) is provided with a valve cover (3), the valve cover (3) is mounted with the connecting pipe (2) through bolts, the upper end face of the valve cover (3) is provided with a threaded hole (4), the inside of the threaded hole (4) is provided with a threaded rod (5), the upper end of the threaded rod (5) is fixedly provided with a hand wheel (6), the lower end of the threaded rod passes through the valve cover (3) and is provided with a jacking block (7), the inside of the connecting pipe (2) is provided with a fixed plate (8), the inside of the fixed plate (8) is slidably provided with a transmission rod (9), the lower end of the transmission rod (9) passes through the fixed plate (8) and is provided with a valve clack (10), the other end of the spring (11) is fixedly connected with the fixed plate (8), the upper end face of the transmission rod (9) passes through the fixed plate (8) and is provided with a lower pressing block (12), the lower end face of the lower pressing block (12) is fixedly provided with a limit post (13), the limit post (13) is provided with a plurality of limit posts (14) which are arranged in a circle shape, the limit posts (14) are arranged on the circumference of the limit posts (14), the outer wall of the valve body (1) is provided with a cleaning hole (15) at the lower end.

2. A shut-off valve as defined in claim 1 wherein: the outer end of clearance hole (15) and be located fixed mounting frame (16) on the outer wall of valve body (1), the lower extreme of mounting frame (16) is equipped with connecting plate (17), the up end of connecting plate (17) is equipped with sealing plug (18), sealing plug (18) are located the inside of clearance hole (15), connecting hole (19) have all been seted up on the lower terminal surface of connecting plate (17) and are located four angles, mounting hole (20) have been seted up to the lower terminal surface correspondence of mounting frame (16), the inside of mounting hole (20) and connecting hole (19) is equipped with set screw (21).

3. A shut-off valve as defined in claim 1 wherein: one end of the valve body (1) is fixedly provided with a water inlet pipe (22), the other end of the valve body is fixedly provided with a water outlet pipe (23), and the water inlet pipe (22) and the water outlet pipe (23) are fixedly provided with external flanges (24).

4. A shut-off valve as defined in claim 1 wherein: the valve is characterized in that a circulation port (25) is formed in the valve body (1) and located at the lower end of the valve clack (10), and a sealing ring (26) is fixedly arranged on the inner wall of the circulation port (25).

5. A shut-off valve as defined in claim 4 wherein: the valve clack (10) is fixed to be equipped with sealing block (27) in the up end, the lower terminal surface of sealing block (27) is equipped with first conical surface (28), second conical surface (29) have been seted up to the upper end of sealing washer (26), the gradient of first conical surface (28) and second conical surface (29) equals.

6. A shut-off valve as defined in claim 2 wherein: a sealing gasket (30) is arranged between the mounting frame (16) and the connecting plate (17).

7. A shut-off valve as defined in claim 1 wherein: when the spring (11) is in a relaxed state, the valve flap (10) is located inside the flow opening (25).