CN221323294U

CN221323294U - Single seat valve

Info

Publication number: CN221323294U
Application number: CN202323393683.5U
Authority: CN
Inventors: 朱骁骐; 杨剑波; 陈山
Original assignee: Wuxi Hejia Instrumentation Co ltd
Current assignee: Wuxi Hejia Instrumentation Co ltd
Priority date: 2023-12-13
Filing date: 2023-12-13
Publication date: 2024-07-12
Anticipated expiration: 2033-12-13

Abstract

The utility model provides a single-seat valve, wherein a valve rod penetrates through a valve body, the valve rod is in rotary connection with the valve body, a valve cavity, an inlet channel and an outlet channel are arranged in the valve body, a valve seat is arranged in the valve cavity, two ends of the valve seat are correspondingly in rotary connection with the side wall of the valve cavity, and the valve rod is in interference fit with the valve seat. The utility model sets the original guide sleeve, the valve seat pressing sleeve and the valve seat into the integrated valve seat, reduces the number of parts, thereby avoiding the assembly difference of the parts and solving the sealing problem between the valve seat and the valve body. Simultaneously, the valve seat and the valve rod are cast, one-time molding is carried out, and the valve rod and the valve seat are machined through single clamping.

Description

Single seat valve

Technical Field

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

Background

The valve is a control component in the fluid conveying system and has the functions of stopping, adjusting, guiding, preventing backflow, stabilizing pressure, diverting or overflow pressure relief and the like. The variety and size of valves used in extremely complex self-control systems, ranging from the simplest shut-off valves, is quite large. The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like.

As shown in fig. 1, the existing one-way valve comprises a guide sleeve 11, a valve seat pressing sleeve 12 and a valve seat 13 due to the fact that the number of parts is large, the assembly of parts is poor, the whole structure is error, the guide precision is poor, and the sealing effect of the valve seat 13 and the valve body is not ideal.

Disclosure of utility model

The utility model aims to provide a single seat valve which overcomes the defects in the prior art.

In order to solve the technical problems, the technical scheme of the utility model is as follows: the utility model provides a single seat valve, includes valve body and valve rod, and wherein, the valve rod runs through the valve body, and the valve rod rotates with the valve body to be connected, be provided with valve pocket and inlet channel and outlet channel in the valve body, be provided with the disk seat in the valve pocket, wherein the disk seat both ends correspond and rotate with the lateral wall of valve pocket to be connected, valve rod and disk seat interference fit.

In the scheme, the original guide sleeve, the valve seat pressing sleeve and the valve seat are arranged as the integrated valve seat, so that the number of parts is reduced, assembly difference of the parts is avoided, and the sealing problem between the valve seat and the valve body is solved. Simultaneously, the valve seat and the valve rod are cast, one-time molding is carried out, and the valve rod and the valve seat are machined through single clamping.

As an improvement of the single-seat valve, the valve seat comprises two circular rings and two sealing blocks which are integrally formed, wherein a connecting step is arranged at the bottom of the valve seat, a sealing surface is arranged between the circular ring close to the bottom and the sealing blocks, the thickness of the inner wall of the circular ring is gradually increased from top to bottom, and the inner wall of the circular ring is in interference fit with the top end of the valve rod.

In the scheme, the thickness of the valve rod is gradually increased from top to bottom and the thickness of the inner wall of the thickness of the circular ring is gradually increased from top to bottom, so that the difficulty of connecting the end head of the valve rod with the valve seat is reduced.

As an improvement of the single-seat valve, the bottom of the valve rod is integrally formed with a connecting end, the connecting end is used for being in interference fit with the inner wall of the bottom circular ring of the valve seat, the connecting end comprises a supporting block and a connecting block, and the supporting block is provided with an inclined plane matched with the sealing surface.

In the above-mentioned scheme, in order to realize the lightweight of valve rod, through dividing into two parts with the valve rod, a part is used for being connected with the actuating source, and the other end is for connecting the end, should connect the end and be used for with the disk seat cooperation, simultaneously in order to realize connecting the end and the sealing of disk seat bottom ring, consequently, connect the end and include two parts, the cross-section of its supporting shoe is greater than the cross-section with the connecting block, and the inclined plane of supporting shoe is used for the sealed face cooperation with the ring to guarantee the leakproofness of disk seat and valve rod, and the supporting shoe also can play limiting displacement at connecting the end and the assembly of ring in-process.

As an improvement of the single seat valve, a guide inclined plane and a guide surface are arranged between two sealing blocks of the valve seat, and the guide inclined plane and the guide surface are used for passing through the connecting end of the valve rod.

In the above scheme, the guide sleeve of the structure needs heat treatment to enlarge the opening area, otherwise, the phenomenon of clamping between the connecting end head and the guide sleeve exists. The guide inclined surface and the guide surface of the sealing block facilitate the insertion of the valve rod connecting end, and the connecting end of the valve rod slides along the guide inclined surface and the guide surface, so that the condition that the connecting end is easy to be blocked with the sealing block is avoided.

As an improvement of the single-seat valve, a leakage-proof ring is arranged at the joint between the valve seat and the bottom of the valve cavity.

In the scheme, the leak-proof ring is arranged at the joint between the valve seat and the bottom of the valve cavity so as to improve the tightness between the valve seat and the valve body.

Compared with the prior art, the utility model has the beneficial effects that: the original guide sleeve, the valve seat pressing sleeve and the valve seat are arranged as the integrated valve seat, so that the number of parts is reduced, the assembly difference of the parts is avoided, and the sealing problem between the valve seat and the valve body is solved. Simultaneously, the integrated valve seat and the valve rod are cast, the valve seat and the valve rod are molded at one time, and the valve rod and the valve seat are machined through single clamping; the connecting end head comprises two parts, the section of the supporting block is larger than that of the connecting block, and the inclined plane of the supporting block is used for being matched with the sealing surface of the circular ring, so that the tightness of the valve seat and the valve rod is ensured, and the supporting block can also play a limiting role in the assembling process of the connecting end head and the circular ring; the guide inclined surface and the guide surface of the sealing block facilitate the insertion of the valve rod connecting end, and the connecting end of the valve rod slides along the guide inclined surface and the guide surface, so that the condition that the connecting end is easy to be blocked with the sealing block is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.

FIG. 1 is a schematic diagram of a structure in the background art;

FIG. 2 is a schematic illustration of a single seat valve;

FIG. 3 is a cross-sectional view of a single seat valve;

FIG. 4 is an enlarged view of FIG. 3 at A;

Fig. 5 is a schematic view of the structure of the single seat valve after the valve body is removed.

Wherein, 1, the valve body; 2. a valve stem; 3. a valve seat; 31. a circular ring; 32. a sealing block; 4. a connecting step; 5. sealing surfaces; 6. a connecting end; 61. a support block; 62. a connecting block; 7. an inclined plane; 8. a guide slope; 9. a guide surface; 10. a leakage preventing ring; 11. a guide sleeve; 12. pressing the valve seat; 13. a valve seat.

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.

As shown in fig. 2 to 5, a single-seat valve comprises a valve body 1 and a valve rod 2, wherein the valve rod 2 penetrates through the valve body 1, the valve rod 2 is rotationally connected with the valve body 1, a valve cavity, an inlet channel and an outlet channel are arranged in the valve body 1, a valve seat 3 is arranged in the valve cavity, two ends of the valve seat 3 are correspondingly rotationally connected with the side wall of the valve cavity, and the valve rod 2 is in interference fit with the valve seat 3.

The original guide sleeve, the valve seat 3 and the valve seat 3 are arranged into the integrated valve seat 3, so that the number of parts is reduced, the assembly difference of the parts is avoided, and the sealing problem between the valve seat 3 and the valve body 1 is solved. Simultaneously, the valve seat 3 and the valve rod 2 are cast, one-time molding is carried out, and the valve rod 2 and the valve seat 3 are machined by single clamping.

The valve seat 3 comprises two circular rings 31 and two sealing blocks 32 which are integrally formed, wherein a connecting step 4 is arranged at the bottom of the valve seat 3, a sealing surface 5 is arranged between the circular ring 31 close to the bottom and the sealing blocks 32, the thickness of the inner wall of the circular ring 31 is gradually increased from top to bottom, and the inner wall of the circular ring 31 is in interference fit with the top end of the valve rod 2.

By gradually increasing the thickness of the valve rod 2 from top to bottom and the thickness of the inner wall of the thickness of the circular ring 31 from top to bottom, the difficulty of connecting the end head 6 of the valve rod 2 with the valve seat 3 is reduced.

The bottom integrated into one piece of valve rod 2 has connection end 6, connection end 6 is used for with the bottom ring 31 inner wall interference fit of disk seat 3, connection end 6 includes supporting shoe 61 and connecting block 62, wherein supporting shoe 61 is provided with sealed face 5 complex inclined plane 7.

In order to realize the lightweight of valve rod 2, through dividing into two parts with valve rod 2, a part is used for being connected with the driving source, and the other end is connecting end 6, and this connecting end 6 is used for cooperating with disk seat 3, simultaneously in order to realize the sealing of connecting end 6 and disk seat 3 bottom ring 31, consequently, connecting end 6 includes two parts, its supporting shoe 61's cross-section is greater than the cross-section with connecting block 62, and supporting shoe 61's inclined plane 7 is used for cooperating with the sealed face 5 of ring 31, thereby guarantee disk seat 3 and valve rod 2's leakproofness, and supporting shoe 61 also can play limiting displacement in connecting end 6 and ring 31 assembly process.

A guide bevel 87 and a guide surface 9 are arranged between the two sealing blocks 32 of the valve seat 3, and the guide bevel 87 and the guide surface 9 are used for the passage of the connecting end 6 of the valve rod 2.

Because the guide sleeve of the structure needs heat treatment to enlarge the opening area, otherwise, the phenomenon of clamping between the connecting end head 6 and the guide sleeve exists. The guide inclined surface 87 and the guide surface 9 of the sealing block 32 facilitate the insertion of the connecting end 6 of the valve rod 2, and the connecting end 6 of the valve rod 2 slides along the guide inclined surface 87 and the guide surface 9, so that the condition that the connecting end 6 is easy to be blocked with the sealing block 32 is avoided.

A leakage-proof ring 10 is arranged at the joint between the valve seat 3 and the bottom of the valve cavity.

The leak-proof ring 10 is arranged at the joint between the valve seat 3 and the bottom of the valve cavity to improve the tightness between the valve seat 3 and the valve body 1.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model 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.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The utility model provides a single seat valve, includes valve body and valve rod, and wherein, the valve rod runs through the valve body, and the valve rod rotates with the valve body to be connected, its characterized in that, be provided with valve pocket and inlet channel and outlet channel in the valve body, be provided with the disk seat in the valve pocket, wherein the disk seat both ends correspond and rotate with the lateral wall of valve pocket to be connected, valve rod and disk seat interference fit.

2. The single seat valve according to claim 1, wherein the valve seat comprises two rings and two sealing blocks which are integrally formed, wherein a connecting step is arranged at the bottom of the valve seat, a sealing surface is arranged between the ring and the sealing block which are close to the bottom, the thickness of the inner wall of the ring gradually increases from top to bottom, and the inner wall of the ring is in interference fit with the top end of the valve rod.

3. A single seat valve as claimed in claim 1, wherein the bottom of the valve stem is integrally formed with a connecting head for interference fit with the bottom annular inner wall of the valve seat, the connecting head comprising a support block and a connecting block, wherein the support block is provided with a bevel for engagement with the sealing surface.

4. A single seat valve as claimed in claim 1 wherein a guide ramp and guide surface are provided between the two sealing blocks of the valve seat for the passage of the connecting end of the valve stem.

5. The single seat valve of claim 1, wherein a leak-proof ring is provided at the junction between the valve seat and the bottom of the valve chamber.