CN218347959U

CN218347959U - Sealing structure of sleeve regulating valve

Info

Publication number: CN218347959U
Application number: CN202221525491.8U
Authority: CN
Inventors: 陆耀威; 朱峰; 朱安
Original assignee: Shanghai Pin An High Pressure Control Valve Co ltd
Current assignee: Shanghai Pin An High Pressure Control Valve Co ltd
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2023-01-20
Anticipated expiration: 2032-06-17

Abstract

The utility model discloses a seal structure of sleeve governing valve relates to the governing valve field, which comprises a valve body, the inside sleeve that is provided with of valve body, telescopic inner wall is provided with the case, the bottom of case is provided with the lug, the bottom of lug is provided with the sealing washer, the lug all forms the echelonment of mutually supporting with telescopic bottom, the sealing port has been seted up to telescopic inner wall. The utility model discloses a set up the lug of echelonment in the bottom of case, cooperate with the inside ladder groove of sleeve, it is sealed to form the ladder, the bottom of lug sets up sealing washer and rubber arch simultaneously, when the case descends, lug and telescopic ladder groove contact, case extrusion sealing washer and rubber arch this moment, take place to warp in the protruding sealed mouthful of inserting of rubber, the ladder that cooperation lug and ladder groove formed is sealed, sealed effect between case and the sleeve is better, the better leakproofness can be realized to the motive force that does not need to promote the case.

Description

Sealing structure of sleeve regulating valve

Technical Field

The utility model relates to a governing valve field specifically is a seal structure of sleeve governing valve.

Background

The sleeve regulating valve is provided with an inner cavity which is separated by a valve seat, a sleeve, a balance cylinder and a sleeve valve core to form an upper flow passage and a lower flow passage, the sleeve valve core is movably connected with the valve seat through the sleeve and the balance cylinder at the separation position, and the flow rate and the pressure of fluid are controlled by changing the area of a cut-off surface of a sleeve window through the up-and-down movement of the sleeve valve core by adopting the action of a valve core rod in the valve body; or the sleeve valve core moves in the flow channel in the valve body to realize the opening or closing of the valve.

When the flow and the pressure of fluid passing through the regulating valve need to be controlled, the valve rod is pushed to control the movement of the valve core in the sleeve, the area of the flow-stopping surface of the water inlet of the sleeve is changed, and the sealing effect inside the regulating valve depends on the sealing performance between the valve core and the sleeve.

In order to improve the sealing performance of the valve, the traditional regulating valve adopts increased thrust to enable the valve core and the valve seat to be pressed more tightly, but the cost of a driving part needs to be increased when the thrust is increased, so that the driving cost of the valve is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problems that the general sleeve regulating valve increases thrust and improves sealing performance and the cost is high, the sealing structure of the sleeve regulating valve is provided.

In order to achieve the above object, the utility model provides a following technical scheme:

the sealing structure of the sleeve regulating valve comprises a valve body, wherein a sleeve is arranged inside the valve body, a valve core is arranged on the inner wall of the sleeve, a convex block is arranged at the bottom of the valve core, a sealing ring is arranged at the bottom of the convex block, the convex block and the bottom of the sleeve form mutually matched stepped shapes, a sealing opening is formed in the inner wall of the sleeve, and a rubber protrusion is arranged at the bottom of the sealing ring.

Through adopting above-mentioned technical scheme, the rubber arch takes place to warp in inserting the sealing port, and the cooperation lug is sealed with the ladder that the ladder groove formed, and the sealed effect between case and the sleeve is better, need not promote the driving force of case and can realize better leakproofness.

The utility model discloses further set up to, the top of case is provided with the valve rod.

Through adopting above-mentioned technical scheme, the valve rod can promote the valve core lift control fluid flow.

The utility model discloses further set up to, the water inlet has been seted up to telescopic outer wall, the case can carry out the shutoff to the water inlet.

By adopting the technical scheme, the valve core can change the flow-stopping area of the water inlet of the sleeve.

The utility model discloses further set up to, sealing opening and the protruding one-to-one of rubber, the external diameter of sealing opening is greater than the bellied external diameter of rubber, the degree of depth of sealing opening is less than the bellied height of rubber.

Through adopting above-mentioned technical scheme, when the rubber arch takes place to warp because the extrusion, can be better fill the sealing opening, sealed effect is better.

The utility model discloses further set up as, telescopic top is provided with the flange structure with the contact position of valve body.

Through adopting above-mentioned technical scheme, the leakproofness of sleeve with the valve body has been promoted to the flange structure.

The utility model discloses further set up to, the inside of valve body is provided with the mount pad, the shape size and the telescopic bottom shape size of mount pad cooperate.

Through adopting above-mentioned technical scheme, further promoted the sealed effect of mount pad with sleeve contact position.

The utility model discloses further set up to, the mounting hole has been seted up to the both sides of valve body.

Through adopting above-mentioned technical scheme, made things convenient for the valve body to install to corresponding in the pipeline.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a set up the lug of echelonment in the bottom of case, cooperate with the inside ladder groove of sleeve, it is sealed to form the ladder, the bottom of lug sets up sealing washer and rubber arch simultaneously, when the case descends, lug and telescopic ladder groove contact, case extrusion sealing washer and rubber arch this moment, take place to warp in the protruding sealed mouthful of inserting of rubber, the ladder that cooperation lug and ladder groove formed is sealed, sealed effect between case and the sleeve is better, the better leakproofness can be realized to the motive force that does not need to promote the case.

Drawings

Fig. 1 is a cross-sectional view of the present invention;

FIG. 2 is a sectional view of the sleeve and the valve core of the present invention;

fig. 3 is an enlarged view of a structure in fig. 2 according to the present invention.

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 work belong to the protection scope of the present invention.

A sealing structure of a sleeve regulating valve is disclosed, as shown in figures 1-3, comprising a valve body 1, a sleeve 3 is arranged inside the valve body 1, a valve core 7 is arranged on the inner wall of the sleeve 3, a convex block 8 is arranged at the bottom of the valve core 7, a sealing ring 9 is arranged at the bottom of the convex block 8, the convex block 8 and the bottom of the sleeve 3 all form a mutually matched ladder shape, a sealing port 5 is formed on the inner wall of the sleeve 3, a rubber protrusion 10 is arranged at the bottom of the sealing ring 9, the stepped convex block 8 is arranged at the bottom of the valve core 7 and matched with a ladder groove inside the sleeve 3 to form a ladder seal, meanwhile, the sealing ring 9 and the rubber protrusion 10 are arranged at the bottom of the convex block 8, when the valve core 7 descends, the convex block 8 contacts with the ladder groove of the sleeve 3, at the moment, the valve core 7 extrudes the sealing ring 9 and the rubber protrusion 10, the rubber protrusion 10 is inserted into the sealing port 5 to deform, the ladder seal formed by matching the convex block 8 and the ladder groove, the sealing effect between the valve core 7 and the sleeve 3 is better, and better sealing performance can be realized without increasing the driving force of the valve core 7.

Referring to fig. 1, a valve rod 6 is disposed at the top of a valve core 7, a water inlet 4 is formed in the outer wall of a sleeve 3, the valve core 7 can block the water inlet 4, an external driving mechanism drives the valve rod 6 to move up and down, the valve core 7 is controlled to lift, and the flow-stopping area of the water inlet 4 of the sleeve 3 is changed.

Referring to fig. 3, the sealing ports 5 correspond to the rubber protrusions 10 one by one, the outer diameter of the sealing ports 5 is larger than the outer diameter of the rubber protrusions 10, the depth of the sealing ports 5 is smaller than the height of the rubber protrusions 10, when the valve core 7 descends, the bumps 8 contact with the stepped grooves of the sleeve 3, the rubber protrusions 10 are inserted into the sealing ports 5, and as the outer diameter of the sealing ports 5 is larger than the outer diameter of the rubber protrusions 10 and the depth is smaller than the height of the rubber protrusions 10, when the rubber protrusions 10 deform due to extrusion, the sealing ports 5 can be filled better, and the sealing effect is better.

Referring to fig. 1, a flange structure 11 is disposed at a contact position between the top of the sleeve 3 and the valve body 1, and the flange structure improves the sealing performance between the sleeve 3 and the valve body 1.

Referring to fig. 1, a mounting seat 2 is arranged inside a valve body 1, the shape and size of the mounting seat 2 are matched with the shape and size of the bottom of a sleeve 3, and a sealing gasket is arranged at the contact position of the mounting seat 2 and the sleeve 3, so that the sealing effect of the contact position is improved.

Referring to fig. 1, mounting holes 12 are formed in two sides of the valve body 1, so that the valve body 1 can be conveniently mounted in a corresponding pipeline.

The utility model discloses a theory of operation does: fluid enters the interior of the valve body 1 from the water inlet end of the valve body 1 and then enters the sleeve 3 from the water inlet 4, and when the flow and the pressure of the fluid passing through the valve body 1 need to be adjusted, the external driving mechanism pushes the valve rod 6 to control the valve core 7 to move in the sleeve 3, so that the area of the interception surface of the water inlet is changed, and the flow adjustment is realized;

when case 7 descends, lug 8 and the ladder groove contact of sleeve 3, case 7 extrusion sealing washer 9 and the protruding 10 of rubber this moment, protruding 10 of rubber inserts in sealing opening 5, because the external diameter of sealing opening 5 is greater than the external diameter of the protruding 10 of rubber, the degree of depth is less than the height of the protruding 10 of rubber, so when protruding 10 of rubber takes place to warp because the extrusion, can be better fill sealing opening 5, cooperate the step seal that lug 8 and ladder groove formed, the sealed effect between case 7 and the sleeve 3 is better.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a seal structure of sleeve governing valve, includes the valve body, its characterized in that: the improved valve is characterized in that a sleeve is arranged inside the valve body, a valve core is arranged on the inner wall of the sleeve, a convex block is arranged at the bottom of the valve core, a sealing ring is arranged at the bottom of the convex block, the convex block and the bottom of the sleeve form mutually matched stepped shapes, a sealing opening is formed in the inner wall of the sleeve, and a rubber bulge is arranged at the bottom of the sealing ring.

2. The seal structure of a sleeve regulator valve according to claim 1, wherein: and a valve rod is arranged at the top of the valve core.

3. The seal structure of a sleeve regulator valve according to claim 1, wherein: the water inlet is seted up to the outer wall of sleeve, the case can carry out the shutoff to the water inlet.

4. The seal structure of a sleeve regulator valve according to claim 1, wherein: the sealing openings correspond to the rubber bulges one by one, the outer diameters of the sealing openings are larger than those of the rubber bulges, and the depth of each sealing opening is smaller than the height of each rubber bulge.

5. The seal structure of a sleeve regulator valve according to claim 1, wherein: and a flange structure is arranged at the contact position of the top of the sleeve and the valve body.

6. The seal structure of a sleeve regulator valve according to claim 1, wherein: the valve body is internally provided with a mounting seat, and the shape and the size of the mounting seat are matched with the shape and the size of the bottom of the sleeve.