CN216343930U

CN216343930U - Stop valve adopting L-shaped valve clack positioning ring

Info

Publication number: CN216343930U
Application number: CN202122720824.4U
Authority: CN
Inventors: 吕涛林; 王传金; 涂宝俊
Original assignee: Huaneng Fujian Energy Development Co Ltd Fuzhou Branch
Current assignee: Huaneng Fujian Energy Development Co Ltd Fuzhou Branch
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-04-19
Anticipated expiration: 2031-11-08

Abstract

The utility model discloses a stop valve adopting an L-shaped valve clack positioning ring, which belongs to the technical field of stop valves and comprises a valve rod and a valve seat which are arranged in a valve cavity, wherein a valve clack is sleeved on the valve rod, the inner hole step surface of the valve clack is abutted with the outer wall step surface of the valve rod, the outer wall of the valve rod is provided with a groove, the L-shaped positioning ring is embedded in the groove, the top end of the valve clack is connected with a valve clack cover, the bottom of the valve clack cover is abutted with the L-shaped positioning ring, the L-shaped positioning ring is composed of two semi-circular rings which are independent, the cross section of the L-shaped positioning ring is of an L-shaped structure, and an axial loose gap is reserved between the L-shaped positioning ring and the groove.

Description

Stop valve adopting L-shaped valve clack positioning ring

Technical Field

The utility model relates to the technical field of stop valve structures, in particular to a stop valve adopting an L-shaped valve clack positioning ring.

Background

The valve clack holding ring of stop valve is applied to each stop valve clack location of industry. The check valve has the effects of preventing the valve clack of the check valve from loosening under the action of the exciting force of fluid, avoiding the valve clack of the check valve from falling off and preventing the fluid in the flow channel from throttling and even breaking; the interruption or throttling of the pipeline flow becomes an unsafe factor in the operation of the equipment.

At present, most types of positioning rings are formed by adding two half flat gaskets between a valve clack and a valve rod, a certain pretightening force is formed by connecting and clamping the valve clack and the valve rod through threads, and after the valve clack is opened and closed for many times in the operation process of the valve clack, the two half flat gaskets are bent and deformed to cause the valve clack to be loosened, so that the valve clack falls off inevitably.

Based on the above, the utility model designs the stop valve adopting the L-shaped valve clack positioning ring to solve the problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an adopt L shape valve clack holding ring stop valve to solve above-mentioned technical problem.

In order to realize the purpose, the utility model provides the following technical scheme: the utility model provides an adopt L shape valve clack holding ring stop valve, is including setting up valve rod and the disk seat in the valve cavity, the cover is equipped with the valve clack on the valve rod, the hole step face of valve clack with the outer wall step face butt of valve rod, the slot has been seted up to the outer wall of valve rod, the embedded L shape holding ring that is equipped with of slot, the valve clack top is connected with the valve clack lid, the bottom of valve clack lid with L shape holding ring butt, L shape holding ring comprises the independent semicircle ring of two halves, the cross-section of L shape holding ring is L shape structure, L shape holding ring with keep somewhere the not hard up clearance of axial between the slot.

Preferably, the outer wall step surface of the valve rod is provided with a first sealing ring in contact with the inner hole step surface of the valve clack.

Preferably, the bottom surface edge of valve clack is provided with the second sealing washer with the disk seat contact, the second sealing washer passes through the clamping ring and is connected fixedly with the valve clack.

Preferably, the valve clack cover is in threaded connection with the top end of the valve clack.

Preferably, the outer wall of the valve rod is sleeved with a compression spring, and the upper end and the lower end of the compression spring are respectively abutted against the bottom of the valve clack and the valve seat.

Compared with the prior art, utility model's beneficial effect does:

when the valve rod applies axial pressure to the valve clack, the valve clack can be helped to perform self-alignment function, and the sealing surface of the valve seat is kept to be tightly attached; and when the valve clack can be used in the axial direction, the swing quantity between the valve rod and the valve clack can be ensured within a certain range, and the valve clack is prevented from falling off due to overlarge swing quantity of the valve clack, so that the stroke of the valve is fixedly changed due to the influence on the stroke of the axial position. Compare traditional stop valve holding ring, it is inseparable to accomplish to connect between the valve clack, does not have the valve clack risk of droing, and the valve clack is from the alignment with the sealed face of disk seat, guarantees the tightness of valve.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive work.

Fig. 1 is a schematic view of the internal structure of the stop valve of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

the valve comprises a valve rod 1, a valve clack 2, a L-shaped positioning ring 3, a valve clack cover 4, a first sealing ring 5, a second sealing ring 6, a pressing ring 7, a compression spring 8, a valve seat 11 and a groove 12.

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. All other embodiments obtained by a person skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.

Referring to fig. 1, the utility model provides a technical solution: a stop valve with an L-shaped valve clack positioning ring comprises a valve rod 1 and a valve seat 11 which are arranged in a valve cavity, wherein the valve rod 1 is sleeved with a valve clack 2, the inner hole step surface of the valve clack 2 is abutted with the outer wall step surface of the valve rod 1, the outer wall of the valve rod 1 is provided with a groove 12, the L-shaped positioning ring 3 is embedded in the groove 12, the top end of the valve clack 2 is connected with a valve clack cover 4, the bottom of the valve clack cover 4 is abutted with the L-shaped positioning ring 3, the L-shaped positioning ring 3 is composed of two half independent semicircular rings to ensure that the L-shaped positioning ring 3 can be clamped and installed in the groove 12, the cross section of the L-shaped positioning ring 3 is of an L-shaped structure, the L-shaped structure is greatly enhanced in structure compared with a flat cushion positioning ring of a traditional straight cross-section structure, the strength of the positioning ring is greatly enhanced, even after the positioning ring is opened and closed for many times in the operation process of the valve clack, the valve clack is not easy to deform to cause the valve clack to loosen, an axial loose gap is reserved between the L-shaped positioning ring 3 and the groove 12, the valve clack 2 is a movable axial space, and when a valve rod applies axial pressure to the valve clack, the valve clack can be helped to perform self-alignment function, and a sealing surface of a valve seat is kept to be tightly attached; and when the valve clack can be used in the axial direction, the swing quantity between the valve rod and the valve clack can be ensured within a certain range, and the valve clack is prevented from falling off due to overlarge swing quantity of the valve clack, so that the stroke of the valve is fixedly changed due to the influence on the stroke of the axial position. Compare traditional stop valve holding ring, it is inseparable to accomplish to connect between the valve clack, does not have the valve clack risk of droing, and the valve clack is from the alignment with the sealed face of disk seat, guarantees the tightness of valve.

Further, the outer wall step surface of the valve rod 1 is provided with a first sealing ring 5 which is in contact with the inner hole step surface of the valve clack 2, and the first sealing ring is used for sealing a gap between the valve rod 1 and the valve clack 2 when the valve is closed.

Furthermore, the edge of the bottom surface of the valve clack 2 is provided with a second sealing ring 6 which is in contact with the valve seat 11, and the second sealing ring 6 is fixedly connected with the valve clack 2 through a pressing ring 7 and used for sealing a gap between the valve clack 2 and the valve seat 11 when the valve is closed.

Further, through threaded connection between valve clack lid 4 and the 2 tops of valve clack, make things convenient for dismouting and elasticity solid regulation.

Further, the outer wall cover of valve rod 1 is equipped with compression spring 8, both ends respectively with valve clack 2 bottoms and disk seat 11 looks butt about compression spring 8, when the valve is opened, compression spring 8 elasticity supports 2 axial upsets of valve clack, make L

shape holding ring

3 and 12 side wall butts on the slot, restrain valve clack 2 because L shape holding ring 3 and slot 12 have the clearance to take place obvious rocking under the valve opening medium torrent disturbance effect, and then lead to the structure to produce the wearability not hard up.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; the term "connected" may refer to a direct connection, an indirect connection through an intermediate, a connection between two elements or an interaction relationship between two elements, and unless otherwise specifically defined, the term should be understood as having a specific meaning in the present application by those skilled in the art.

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 an adopt L shape valve clack holding ring stop valve which characterized in that: including setting up in valve rod (1) and disk seat (11) of valve intracavity, the cover is equipped with valve clack (2) on valve rod (1), the hole step face of valve clack (2) with the outer wall step face butt of valve rod (1), slot (12) have been seted up to the outer wall of valve rod (1), slot 12 is embedded to be equipped with L shape holding ring (3), valve clack (2) top is connected with valve clack lid (4), the bottom of valve clack lid (4) with L shape holding ring (3) butt, L shape holding ring (3) comprise the independent semicircle ring of two halves, the cross-section of L shape holding ring (3) is L shape structure, L shape holding ring (3) with keep somewhere the not hard up clearance of axial between slot (12).

2. The stop valve with the L-shaped valve clack positioning ring as claimed in claim 1, wherein: the outer wall step face of valve rod (1) be provided with first sealing washer (5) of the hole step face contact of valve clack (2).

3. The stop valve with the L-shaped valve clack positioning ring as claimed in claim 1, wherein: the bottom surface edge of valve clack (2) is provided with second sealing washer (6) with disk seat (11) contact, second sealing washer (6) are connected fixedly through clamping ring (7) and valve clack (2).

4. The stop valve with the L-shaped valve clack positioning ring as claimed in claim 1, wherein: the valve clack cover (4) is connected with the top end of the valve clack (2) through threads.

5. The stop valve with the L-shaped valve clack positioning ring as claimed in claim 1, wherein: the outer wall cover of valve rod (1) is equipped with compression spring (8), both ends are connected with valve clack (2) bottom and disk seat (11) looks butt respectively about compression spring (8).