CN216200547U

CN216200547U - Flow regulating valve

Info

Publication number: CN216200547U
Application number: CN202122549673.0U
Authority: CN
Inventors: 贺宇辰; 詹少军; 徐冠军
Original assignee: Zhejiang DunAn Hetian Metal Co Ltd
Current assignee: Zhejiang DunAn Hetian Metal Co Ltd
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2022-04-05
Anticipated expiration: 2031-10-20

Abstract

The utility model provides a flow regulating valve, comprising: a main valve seat; the auxiliary valve seat comprises a main body and a flanging structure arranged on the main body, the main body is provided with an installation groove, and the main body is connected with the main valve seat; the sealing gasket is arranged in the mounting groove, the flanging structure is in limit fit with the sealing gasket, the sealing gasket is provided with a valve port, and the sealing gasket is made of a non-metal material; the valve head is movably arranged in the cavity of the main valve seat to open or close the valve port and is made of metal materials, and the hardness of the valve head is greater than that of the sealing gasket. Through the technical scheme provided by the utility model, the problems that the sealing structure in the flow regulating valve in the prior art has certain damage to the sealing pad, the structure is complex, the internal leakage is large, and the flow consistency cannot be ensured can be solved.

Description

Flow regulating valve

Technical Field

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

Background

At present, for the sealing structure in the existing flow regulating valve, such as an electronic expansion valve, two sealing structures, namely a hard sealing structure and a soft sealing structure, are generally adopted. When the soft sealing structure is adopted, the soft sealing gasket is directly abutted between the main valve seat and the auxiliary valve seat for limiting. In the structure, the wall thickness of the main valve seat needs to be thicker to be in limit fit with the sealing gasket, the requirement on the fit precision is high, and the production cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a flow regulating valve, which aims to solve the problem that the assembly structure of a sealing gasket in the flow regulating valve in the prior art is high in cost.

In order to solve the above problems, the present invention provides a flow rate regulating valve comprising: a main valve seat; the auxiliary valve seat comprises a main body and a flanging structure arranged on the main body, the main body is provided with an installation groove, and the main body is connected with the main valve seat; the sealing gasket is arranged in the mounting groove, the flanging structure is in limit fit with the sealing gasket, the sealing gasket is provided with a valve port, and the sealing gasket is made of a non-metal material; the valve head is movably arranged in the cavity of the main valve seat to open or close the valve port and is made of metal materials, and the hardness of the valve head is greater than that of the sealing gasket.

Furthermore, the flanging structure is of an annular structure, and the flanging structure is abutted to the end face of the sealing gasket.

Further, the main valve seat is of a cylindrical structure, and the inner diameter of the main valve seat is larger than the outer diameter of the flanging structure.

Further, the connection of the flanging structure and the main body is provided with an annular groove, and the annular groove faces the mounting groove.

Further, before the flanging structure deforms, the radial section of the annular groove is square, triangular or circular arc.

Further, the wall thickness of the flanging structure is smaller than that of the main body.

Further, the main part includes the barrel and sets up the annular boss on the barrel, and turn-ups structure and annular boss are connected, and the wall thickness of annular boss is less than the wall thickness of barrel, and turn-ups structure's wall thickness is less than the wall thickness of annular boss.

Further, a part of the cylinder and the annular boss surround to form a mounting groove; before the flanging of the flanging structure deforms, the outer diameter of the flanging structure is equal to that of the annular boss.

Further, the inner wall of the main valve seat is provided with a first step, the outer wall of the main body is provided with a second step, and the second step is in limit fit with the first step.

Further, the flow regulating valve is an electronic expansion valve.

By applying the technical scheme of the utility model, the utility model provides a flow regulating valve, which comprises: a main valve seat; the auxiliary valve seat comprises a main body and a flanging structure arranged on the main body, the main body is provided with an installation groove, and the main body is connected with the main valve seat; the sealing gasket is arranged in the mounting groove, the flanging structure is in limit fit with the sealing gasket, the sealing gasket is provided with a valve port, and the sealing gasket is made of a non-metal material; the valve head is movably arranged in the cavity of the main valve seat to open or close the valve port and is made of metal materials, and the hardness of the valve head is greater than that of the sealing gasket. By adopting the scheme, the auxiliary valve seat comprises a main body and a flanging structure arranged on the main body, and the auxiliary valve seat supports the sealing gasket through the flanging part after the flanging of the flanging structure and is in spacing fit with the sealing gasket. The sealing gasket is fixed on the auxiliary valve seat through the flanging structure, so that the sealing gasket is prevented from shaking and rotating in the auxiliary valve seat, and meanwhile, the sealing gasket is prevented from deforming due to larger radial force. Compared with the prior art, the scheme has the advantages that the flange structure on the auxiliary valve seat is adopted to limit the sealing gasket, so that the main valve seat is not required to be used to limit the sealing gasket, the wall thickness of the main valve seat can be thinner, the flange form is adopted to facilitate assembly operation, and the cost of the flow regulating valve is reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is a schematic structural diagram of a flow regulating valve according to a first embodiment of the present invention;

FIG. 2 is a schematic diagram illustrating the construction of a secondary valve seat in the flow control valve of FIG. 1;

FIG. 3 is a schematic diagram illustrating the engagement of the flange structure and the gasket in the flow control valve according to the second embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a secondary valve seat in the flow control valve according to the second embodiment of the present invention;

fig. 5 is another schematic structural diagram of the auxiliary valve seat in the flow rate regulating valve according to the second embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a main valve seat; 11. a first step; 20. an auxiliary valve seat; 21. a main body; 211. a barrel; 212. an annular boss; 22. a flanging structure; 23. mounting grooves; 24. an annular groove; 25. a second step; 30. a gasket; 31. a valve port; 40. a valve head.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and 2, a first embodiment of the present invention provides a flow rate regulating valve, including: a main valve seat 10; the auxiliary valve seat 20 comprises a main body 21 and a flanging structure 22 arranged on the main body 21, the main body 21 is provided with a mounting groove 23, and the main body 21 is connected with the main valve seat 10; the sealing gasket 30 is arranged in the mounting groove 23, the flanging structure 22 is in limit fit with the sealing gasket 30, the sealing gasket 30 is provided with a valve port 31, and the sealing gasket 30 is made of non-metal materials; and a valve head 40 movably disposed in the cavity of the main valve seat 10 to open or close the valve port 31, wherein the valve head 40 is made of a metal material, and the hardness of the valve head 40 is greater than that of the seal gasket 30.

In this embodiment, the auxiliary valve seat 20 in the flow control valve includes a main body 21 and a flanging structure 22 disposed on the main body 21, the main body 21 has a mounting groove 23, and the sealing gasket 30 is disposed in the mounting groove 23 in a limiting manner by flanging the flanging portion of the flanging structure 22 on the main body 21, so that the flanging structure 22 and the sealing gasket 30 are in a limiting fit. By adopting the scheme, the sealing gasket 30 is fixed on the auxiliary valve seat 20 through the flanging structure 22, so that the sealing gasket 30 is prevented from shaking and rotating in the auxiliary valve seat 20, and meanwhile, the sealing gasket 30 is prevented from deforming due to larger radial force. Compared with the prior art, the scheme has the advantages that the flange structure 22 on the auxiliary valve seat 20 is adopted to limit the sealing gasket 30, so that the main valve seat 10 is not required to be used for limiting the sealing gasket 30, the wall thickness of the main valve seat 10 can be thinner, the flange form is adopted, the assembly operation is convenient, and the cost of the flow regulating valve is reduced.

As shown in fig. 2, the flanging structure 22 is an annular structure, and the flanging structure 22 abuts against the end surface of the gasket 30 after the assembly is completed. The flanging structure 22 is an annular structure, and after the flanging at the flanging position of the flanging structure 22 is abutted to the end face of the sealing gasket 30, the periphery of the outer ring of the sealing gasket 30 is abutted to the flanging of the flanging structure 22, so that the stability of the flanging structure 22 for fixing the sealing gasket 30 is ensured.

As shown in fig. 1, the main valve seat 10 is a cylindrical structure, and the inner diameter of the main valve seat 10 is larger than the outer diameter of the flange structure 22. The sealing gasket 30 is arranged in the mounting groove 23 of the main body 21 of the auxiliary valve seat 20, and the flanging structure 22 is also arranged on the main body 21 of the auxiliary valve seat 20, so that the flanging structure 22 on the main body 21 can smoothly enter the cavity of the main valve seat 10 and be flanged to abut against the sealing gasket 30, the inner diameter of the main valve seat 10 is larger than the outer diameter of the flanging structure 22, and the flanging structure 22 can be smoothly arranged in the cavity of the main valve seat 10 and can be flanged. Furthermore, the main valve seat 10 has an inner diameter larger than the outer diameter of the flange structure 22, so that the main valve seat 10 can be made thinner in wall thickness, thereby reducing the cost.

Optionally, the auxiliary valve seat 20 is an integral structure, before the sealing gasket 30 is installed, the flange structure 22 is cylindrical, after the sealing gasket 30 is placed in the installation groove 23, one end of the flange structure 22 is shrunk and deformed by riveting or the like, and after the deformation, the sealing gasket 30 is abutted to the sealing gasket 30, so that the sealing gasket 30 is fixed in the installation groove. The flanging structure 22 is deformed and abutted on the sealing gasket 30 by riveting and the like, so that the abutting between the flanging structure and the sealing gasket is more stable and reliable.

Specifically, the wall thickness of the burring structure 22 is smaller than the wall thickness of the main body 21. When the flanging structure 22 is flanged, the flanging structure 22 with smaller wall thickness can be flanged towards the direction of the sealing gasket 30 in the mounting groove 23 more easily, and if the wall thickness of the flanging structure 22 is larger than or equal to that of the main body 21, the flanging structure 22 cannot be flanged. And the smaller the wall thickness of the flanging structure 22 is, the height of the flanging part of the flanging structure 22 can be relatively reduced, and the flanging is easier.

As shown in fig. 2, the main body 21 includes a cylinder 211 and an annular boss 212 disposed on the cylinder 211, the flange structure 22 is connected to the annular boss 212, the wall thickness of the annular boss 212 is smaller than that of the cylinder 211, and the wall thickness of the flange structure 22 is smaller than that of the annular boss 212. From the above description, the wall thickness sequence of each part on the auxiliary valve seat 20 is as follows: barrel 211, annular boss 212 and cuff structure 22. After sealed pad 30 is installed in mounting groove 23, the inner wall of annular boss 212 and the outer wall butt of sealed pad 30, and the wall thickness of annular boss 212 is greater than flange structure 22's wall thickness and is less than the wall thickness of barrel 211, guarantees flange structure 22's smooth turn-ups, causes the influence to sealed pad 30 when avoiding the turn-ups, realizes the turn-ups more easily to difficult sealed pad 30 atress that leads to takes place the deformation and leads to sealed pad 30 to warp.

The wall thickness of the annular boss 212 is greater than the wall thickness of the flanging structure 22 and less than the wall thickness of the cylinder 211, and the inner diameter of the flanging structure 22 after flanging deformation is larger than the outer diameter of the sealing gasket 30, so that the sealing gasket 30 can be limited, and the thickness of the flanging structure 22 is smaller than that of the annular boss 212, so that the sealing gasket 30 is not prone to stress deformation.

Specifically, a portion of the cylinder 211 and the annular boss 212 surround to form the mounting groove 23; the flanging structure 22 has an outer diameter equal to that of the annular boss 212 before flanging deformation. The mounting groove 23 is formed by surrounding a part of the cylinder body 211 and the annular boss 212, namely, a part of the mounting groove 23 is higher than the cylinder body 211, and after the sealing gasket 30 is mounted in the mounting groove 23, a part of the sealing gasket 30, which protrudes out of the cylinder body 211, is limited by the annular boss 212, so that the limitation of the sealing gasket 30 is ensured. The outer diameter of the flanging structure 22 is equal to that of the annular boss 212, so that the outer diameter part can be machined only by clamping once during machining, and machining is simple.

As can be seen from FIG. 1, the inner wall of the main valve seat 10 has a first step 11, the outer wall of the main body 21 has a second step 25, and the second step 25 is in limit fit with the first step 11. The first step 11 comprises a first step surface in the axial direction of the main valve seat 10 and a second step surface in the radial direction of the main valve seat 10, the first step surface and the second step surface form the first step 11, the second step 25 comprises a third step surface in the axial direction of the auxiliary valve seat 20 and a fourth step surface in the radial direction of the auxiliary valve seat, the third step surface and the fourth step surface form the second step 25, the first step surface is in limit fit with the third step surface, and the second step surface is in limit fit with the fourth step surface. The main valve seat 10 and the auxiliary valve seat 20 can be in limited fit in the axial direction through the limited fit between the two steps.

As shown in fig. 3 to 5, another embodiment of the present invention, embodiment two, provides a flow rate regulating valve. As shown in fig. 3, unlike the above-described embodiment, the joint of the burring formation 22 and the main body 21 has an annular groove 24, and the annular groove 24 faces the mounting groove 23. The annular groove 24 is formed in the flanging structure 22, so that flanging of the flanging part of the flanging structure 22 is facilitated, and deformation influence on the abutting part of the sealing gasket 30 during flanging is reduced.

As shown in fig. 4 and 5, before the flanging configuration 22 is deformed, the radial section of the annular groove 24 is square or triangular or circular arc. The radial section of the annular groove 24 is designed to be square, triangular or circular arc, so that the flanging of the flanging structure 22 is easier, the smooth flanging is realized, and the processing is convenient.

Fig. 4 is a schematic structural view of the auxiliary valve seat 20 having a triangular radial cross section of the annular groove 24 provided in this embodiment, and fig. 5 is a schematic structural view of the auxiliary valve seat 20 having a square radial cross section of the annular groove 24 provided in this embodiment.

Specifically, the flow regulating valve is an electronic expansion valve. By adopting the above embodiment, the auxiliary valve seat 20 in the electronic expansion valve comprises the main body 21 and the flanging structure 22 arranged on the main body 21, the main body 21 is provided with the mounting groove 23, the sealing gasket 30 is limited and arranged in the mounting groove 23 through the flanging of the flanging part of the flanging structure 22 on the main body 21, so that the flanging structure 22 is in limited fit with the sealing gasket 30. By adopting the scheme, the sealing gasket 30 is fixed on the auxiliary valve seat 20 through the flanging structure 22, so that the sealing gasket 30 is prevented from shaking and rotating in the auxiliary valve seat 20, and meanwhile, the sealing gasket 30 is prevented from deforming due to larger radial force. Compared with the sealing structure of the electronic expansion valve in the prior art, the structure has the advantages that the low internal leakage is realized, the number of parts is reduced, the influence on the sealing gasket 30 when the flanging structure 22 is flanged is avoided, the internal leakage is lower, and the consistency of the product flow is better. Compared with the prior art, the scheme has the advantages that the flange structure 22 on the auxiliary valve seat 20 is adopted to limit the sealing gasket 30, so that the main valve seat 10 is not required to be used for limiting the sealing gasket 30, the wall thickness of the main valve seat 10 can be thinner, the flange form is adopted, the assembly operation is convenient, and the cost of the electronic expansion valve is reduced.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A flow control valve, comprising:

a main valve seat (10);

the auxiliary valve seat (20) comprises a main body (21) and a flanging structure (22) arranged on the main body (21), the main body (21) is provided with a mounting groove (23), and the main body (21) is connected with the main valve seat (10);

the sealing gasket (30) is arranged in the mounting groove (23), the flanging structure (22) is in limit fit with the sealing gasket (30), the sealing gasket (30) is provided with a valve port (31), and the sealing gasket (30) is made of non-metal materials;

a valve head (40) movably disposed in the cavity of the main valve seat (10) to open or close the valve port (31), wherein the valve head (40) is made of a metal material, and the hardness of the valve head (40) is greater than that of the sealing gasket (30).

2. The flow regulating valve according to claim 1, wherein the flanging structure (22) is an annular structure, and the flanging structure (22) abuts against the end face of the sealing gasket (30).

3. A flow regulating valve according to claim 1, characterized in that the main valve seat (10) is a cylindrical structure, the main valve seat (10) having an inner diameter larger than the outer diameter of the turn-up structure (22).

4. A flow regulating valve according to claim 1, characterized in that the connection of the flanging structure (22) and the main body (21) has an annular groove (24), the annular groove (24) facing the mounting groove (23).

5. The flow regulating valve according to claim 4, characterized in that the radial cross section of the annular groove (24) before the flanging deformation of the flanging structure (22) is square or triangular or circular arc.

6. Flow regulating valve according to claim 1, characterized in that the wall thickness of the cuff structure (22) is smaller than the wall thickness of the main body (21).

7. The flow regulating valve according to claim 6, wherein the main body (21) comprises a cylinder body (211) and an annular boss (212) arranged on the cylinder body (211), the flanging structure (22) is connected with the annular boss (212), the wall thickness of the annular boss (212) is smaller than that of the cylinder body (211), and the wall thickness of the flanging structure (22) is smaller than that of the annular boss (212).

8. A flow regulating valve according to claim 7, characterized in that a portion of the cylinder (211) and the annular boss (212) form the mounting groove (23) around; before the flanging structure (22) deforms, the outer diameter of the flanging structure (22) is equal to that of the annular boss (212).

9. A flow regulating valve according to claim 1, characterised in that the inner wall of the main valve seat (10) has a first step (11) and the outer wall of the main body (21) has a second step (25), the second step (25) and the first step (11) being in a positive fit.

10. The flow control valve of claim 1, wherein the flow control valve is an electronic expansion valve.