CN212616325U

CN212616325U - Stop valve with pressure release function

Info

Publication number: CN212616325U
Application number: CN202021142254.4U
Authority: CN
Inventors: 尹兴华
Original assignee: Zhejiang Yuanhu Valve Co ltd
Current assignee: Zhejiang Yuanhu Valve Co ltd
Priority date: 2020-06-18
Filing date: 2020-06-18
Publication date: 2021-02-26
Anticipated expiration: 2030-06-18

Abstract

The utility model relates to a stop valve with pressure release function, including valve body, valve rod, valve gap and valve clack, be provided with medium channel in the valve body, be equipped with the disk seat in the medium channel, valve clack and the sealed cooperation of disk seat, valve rod and valve clack are connected and are used for the drive valve clack to reciprocate, and the disk seat up end upwards is protruding to form sealed step, and the outer wall bottom of sealed step inwards caves in and forms the chute, and the valve clack is made by flexible material, is equipped with the sealed recess that is dissolved in the embedding of sealed step on the lower terminal surface of valve clack, be equipped. Through set up sealed step on the disk seat, set up the chute on the sealed step to set up sealed recess and flange on the valve clack, when closed, sealed step card goes into in sealed recess, and the flange card goes into in the chute, increases effective sealing area and sealed gomphosis power, has improved the sealing performance of stop valve greatly.

Description

Stop valve with pressure release function

Technical Field

The utility model relates to the technical field of valves, concretely relates to stop valve with pressure release function.

Background

The stop valve, also called stop valve, is the most widely used valve, and it is popular because the friction between the sealing surfaces is small in the opening and closing process, it is durable, the opening height is not large, it is easy to manufacture, it is convenient to maintain, it is not only suitable for middle and low pressure, but also suitable for high pressure. The stop valve generally comprises a valve body, a valve cover, a valve clack and a valve rod, and is of an ultrahigh-temperature high-pressure stop valve structure disclosed in the application number CN 201710859541.3. The sealing principle of the stop valve with the structure is that the valve rod applies pressure to press the valve clack on the valve seat to realize sealing, and the stop valve has the defect of poor sealing property.

SUMMERY OF THE UTILITY MODEL

To the not enough in the background art, the utility model provides a stop valve with pressure release function.

The utility model adopts the technical proposal that: the utility model provides a stop valve with pressure release function, includes valve body, valve rod, valve gap and valve clack, be provided with medium channel in the valve body, be equipped with the disk seat in the medium channel, valve clack and the sealed cooperation of disk seat, the valve rod is connected with the valve clack and is used for driving the valve clack and reciprocates, the disk seat up end upwards the arch form sealed step, the outer wall bottom of sealed step inwards caves in and forms the chute, the valve clack is made by flexible material, is equipped with on the lower terminal surface of valve clack to be dissolved in the sealed recess of sealed step embedding, be equipped with on the inner wall of sealed recess with.

Furthermore, a conical guide head extends downwards from the valve clack positioned at the inner ring of the chute.

Furthermore, a chamfer is arranged on the outer side of the upper end of the sealing step.

Further, the valve clack upper end is equipped with the connector, be equipped with "protruding" type connecting hole in the connector, the valve rod is connected in the connecting hole and is restricted in the connecting hole through the first restriction step on the valve rod, and leaves the clearance between the second restriction step on first restriction step and the connecting hole, be equipped with the first pressure release hole that communicates to the connecting hole on the toper direction head, be equipped with the second pressure release hole that communicates to the connecting hole on the connector.

Furthermore, the bottom of the valve rod is fixedly connected with a sealing gasket.

Furthermore, a guide ring is arranged at a valve port of the valve body, the guide ring is connected to the valve body through a connecting rod, and the valve rod penetrates through a guide hole in the guide ring to be connected with the valve clack.

The utility model has the advantages that: the utility model discloses a set up sealed step on the disk seat, set up the chute on the sealed step to set up sealed recess and flange on the valve clack, in the closed, sealed step card goes into in sealed recess, and in the chute was gone into to the flange card, increased effective sealing area and sealed gomphosis power, improved the sealing performance of stop valve greatly.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages.

The present invention will be described in further detail with reference to the drawings.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged schematic view of a point a in fig. 1.

In fig. 1 and 2: 1. a valve body; 2. a valve stem; 3. a valve cover; 4. a valve flap; 5. a media channel; 6. a valve seat; 7. sealing the step; 8. a chute; 9. sealing the groove; 10. a flange; 11. a conical guide head; 12. chamfering; 13. a connector; 14. connecting holes; 15. a first limiting step; 16. a second limiting step; 17. a first pressure relief vent; 18. a second pressure relief vent; 19. a gasket; 20. a guide ring; 21. a connecting rod; 22. a gap.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a stop valve with pressure release function.

In this embodiment, refer to fig. 1 and 2, this stop valve with pressure release function, including valve body 1, valve rod 2, valve gap 3 and valve clack 4, be provided with medium passage 5 in the valve body 1, be equipped with disk seat 6 in the medium passage, valve clack and the sealed cooperation of disk seat, the valve rod is connected with the valve clack and is used for driving the valve clack and reciprocates, the disk seat up end upwards protruding formation sealed step 7, the outer wall bottom of sealed step 7 inwards caves in and forms chute 8, the valve clack is made by flexible material, is equipped with on the lower terminal surface of valve clack and dissolves in sealed step embedding sealed recess 9, be equipped with on the inner wall of sealed recess with above-mentioned chute assorted flange 10.

Among the above-mentioned technical scheme, through set up sealed step on the disk seat, set up the chute on the sealed step to set up sealed recess and flange on the valve clack, when closed, sealed step card goes into in sealed recess, and the flange card goes into in the chute, increases effective sealing area and sealed gomphosis power, has improved the sealing performance of stop valve greatly.

Specifically, a conical guide head 11 extends downwards from the valve clack positioned at the inner ring of the chute; and a chamfer 12 is arranged on the outer side of the upper end of the sealing step. The conical guide head and the chamfer angle can play a good role in guiding, and the clamping stagnation phenomenon when the valve is closed is avoided.

Specifically, valve clack upper end is equipped with connector 13, be equipped with "protruding" type connecting hole 14 in the connector, the valve rod is connected in the connecting hole and is restricted in the connecting hole through first restriction step 15 on the valve rod, and leaves clearance 22 between first restriction step and the second restriction step 16 on the connecting hole, be equipped with the first pressure release hole 17 that communicates to the connecting hole on the toper direction head, be equipped with the second pressure release hole 18 that communicates to the connecting hole on the connector.

Among the above-mentioned technical scheme, when the valve was opened, the valve rod shifts up from the connecting hole to switch on first pressure release hole and second pressure release hole and carry out the pressure release to the medium in the valve body, then continue to exert lift to the valve rod, lift the valve clack and thoroughly open the valve, its benefit can play the pressure release effect, reduces the valve and opens required strength, thereby it is more laborsaving when the valve was opened.

In order to improve the sealing performance between the valve rod and the first pressure relief hole, a sealing gasket 19 is fixedly connected to the bottom of the valve rod.

Specifically, a guide ring 20 is arranged at a valve port of the valve body, the guide ring is connected to the valve body through a connecting rod 21, and the valve rod penetrates through a guide hole in the guide ring to be connected with the valve clack. The guide ring plays a role in guiding, the valve rod is prevented from inclining, and the opening and closing stability of the valve is improved.

The utility model discloses a set up sealed step on the disk seat, set up the chute on the sealed step to set up sealed recess and flange on the valve clack, in the closed, sealed step card goes into in sealed recess, and in the chute was gone into to the flange card, increased effective sealing area and sealed gomphosis power, improved the sealing performance of stop valve greatly.

The skilled person should understand that: although the present invention has been described in accordance with the above embodiments, the inventive concept is not limited to this embodiment, and any modification of the inventive concept will be included in the scope of the patent claims.

Claims

1. The utility model provides a stop valve with pressure release function, includes valve body, valve rod, valve gap and valve clack, be provided with medium channel in the valve body, be equipped with the disk seat in the medium channel, valve clack and disk seat seal fit, the valve rod is connected with the valve clack and is used for driving the valve clack and reciprocates its characterized in that: the upper end face of the valve seat protrudes upwards to form a sealing step, the bottom of the outer wall of the sealing step is inwards recessed to form a chute, the valve clack is made of flexible materials, a sealing groove which is embedded into the sealing step is formed in the lower end face of the valve clack, and a flange matched with the chute is formed in the inner wall of the sealing groove.

2. The shutoff valve with pressure relief function according to claim 1, characterized in that: the valve clack positioned in the inner ring of the chute extends downwards to form a conical guide head.

3. The shutoff valve with pressure relief function according to claim 2, characterized in that: and a chamfer is arranged on the outer side of the upper end of the sealing step.

4. The shutoff valve with pressure relief function according to claim 3, characterized in that: the valve clack upper end is equipped with the connector, be equipped with "protruding" type connecting hole in the connector, the valve rod is connected in the connecting hole and through the restriction of the first restriction step on the valve rod in the connecting hole, and leaves the clearance between the second restriction step on first restriction step and the connecting hole, be equipped with the first pressure release hole that communicates to the connecting hole on the toper direction head, be equipped with the second pressure release hole that communicates to the connecting hole on the connector.

5. The shutoff valve with pressure relief function according to claim 4, wherein: the bottom of the valve rod is fixedly connected with a sealing gasket.

6. The shutoff valve with pressure relief function according to claim 4, wherein: the valve comprises a valve body, a valve rod, a valve clack and a guide ring, wherein the valve rod is arranged at a valve port of the valve body, the guide ring is connected to the valve body through a connecting rod, and the valve rod penetrates through a guide hole in the guide ring to be connected with the valve clack.