CN216158329U

CN216158329U - Frost valve

Info

Publication number: CN216158329U
Application number: CN202122201000.6U
Authority: CN
Inventors: 康志军; 俞舟
Original assignee: Zhejiang Dunan Artificial Environment Co Ltd
Current assignee: Zhejiang Dunan Artificial Environment Co Ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-04-01
Anticipated expiration: 2031-09-10

Abstract

The present invention provides an antifreeze valve, comprising: the valve seat is provided with a valve cavity and a valve port, the valve port is communicated with the valve cavity, and the valve port is provided with a conical first sealing surface; the valve core is movably arranged in the valve cavity to close or open the valve port, the valve core is provided with an annular groove, a conical second sealing surface and a conical guide surface, the annular groove is positioned between the second sealing surface and the guide surface, the diameter A of the large end of the guide surface is smaller than the diameter G of the small end of the second sealing surface, and the second sealing surface is used for being in limit fit with the first sealing surface; and the sealing ring is arranged in the annular groove, and the sealing ring is abutted against the first sealing surface under the condition that the valve port is closed. Through the technical scheme provided by the utility model, the problem of poor sealing performance of the valve port of the anti-freezing valve in the prior art can be solved.

Description

Frost valve

Technical Field

The utility model relates to the technical field of valves, in particular to an antifreezing valve.

Background

The anti-freezing valve is used for opening the valve when the external environment temperature is lower so as to discharge the fluid in the heat exchange system and avoid the damage to equipment caused by freezing of the fluid. The antifreezing valve generally comprises a valve core, a valve seat, a thermal bulb and the like, wherein the length of the thermal bulb can be extended or shortened when the temperature changes, so that the valve core matched with the thermal bulb moves to open or close a valve port. However, when the valve port of the antifreezing valve in the prior art is closed, the problem of poor sealing performance often occurs on the valve port, and the use effect of the antifreezing valve in work is affected.

SUMMERY OF THE UTILITY MODEL

The utility model provides an antifreezing valve, which aims to solve the problem that the sealing performance of a valve port of the antifreezing valve in the prior art is poor.

In order to solve the above problems, the present invention provides an antifreeze valve, comprising: the valve seat is provided with a valve cavity and a valve port, the valve port is communicated with the valve cavity, and the valve port is provided with a conical first sealing surface; the valve core is movably arranged in the valve cavity to close or open the valve port, the valve core is provided with an annular groove, a conical second sealing surface and a conical guide surface, the annular groove is positioned between the second sealing surface and the guide surface, the diameter A of the large end of the guide surface is smaller than the diameter G of the small end of the second sealing surface, and the second sealing surface is used for being in limit fit with the first sealing surface; and the sealing ring is arranged in the annular groove, and the sealing ring is abutted against the first sealing surface under the condition that the valve port is closed.

Furthermore, the valve port is also provided with a cylindrical surface, a cavity formed by the cylindrical surface in a surrounding way is communicated with a cavity formed by the first sealing surface in a surrounding way, and the diameter A of the large end of the guide surface is smaller than the diameter B of the cylindrical surface; wherein, under the condition that the valve port is closed, the guide surface stretches into in the cylinder.

Furthermore, the valve core is also provided with a cylindrical transition surface, the transition surface is positioned between the guide surface and the annular groove, and the diameter of the transition surface is equal to the diameter A of the large end of the guide surface; wherein, under the condition that the valve port is closed, the transition surface stretches into in the cylinder.

Furthermore, the taper angles of the first sealing surface and the second sealing surface are the same, and the second sealing surface is attached to the first sealing surface when the valve port is closed.

Further, the sealing ring is made of elastic materials, and when the valve port is opened, the outer diameter E of the sealing ring is larger than the small end diameter B of the first sealing surface and smaller than the large end diameter F of the first sealing surface.

Further, the small end diameter G of the second sealing surface is larger than the small end diameter B of the first sealing surface and smaller than the large end diameter F of the first sealing surface.

Further, the small end diameter C of the guide surface is smaller than the inner diameter D of the sealing ring.

Furthermore, the antifreezing valve further comprises a driving spring, the driving spring is sleeved on the valve core, one end of the driving spring is abutted to the stepped surface on the outer wall of the valve core, and the other end of the driving spring is abutted to the bottom wall of the valve cavity.

Further, the antifreeze valve further comprises: the temperature bulb is movably arranged in the valve cavity, and one end of the temperature bulb is matched with the valve core.

Further, the antifreeze valve further comprises: the elastic part is sleeved on the thermal bulb, one end of the elastic part, which is close to the valve port, is abutted against the stepped surface of the thermal bulb, one end of the valve seat, which is far away from the valve port, is provided with a necking structure, and the necking structure is abutted against one end of the elastic part, which is far away from the valve port.

The technical scheme of the utility model provides an antifreezing valve, which comprises: the valve seat is provided with a valve cavity and a valve port, the valve port is communicated with the valve cavity, and the valve port is provided with a conical first sealing surface; the valve core is movably arranged in the valve cavity to close or open the valve port, the valve core is provided with an annular groove, a conical second sealing surface and a conical guide surface, the annular groove is positioned between the second sealing surface and the guide surface, the diameter A of the large end of the guide surface is smaller than the diameter G of the small end of the second sealing surface, and the second sealing surface is used for being in limit fit with the first sealing surface; and the sealing ring is arranged in the annular groove, and the sealing ring is abutted against the first sealing surface under the condition that the valve port is closed. By adopting the scheme, the conical guide surface is arranged, and the diameter A of the large end of the guide surface is smaller than the diameter G of the small end of the second sealing surface, so that the guide surface can play a role in guiding, the guide surface can enter the valve port firstly when the valve port is closed by the valve core, and the valve core is sealed after being adjusted in position, so that the sealing is more reliable. Through setting up the spacing cooperation of conical first sealed face and second sealed face, can improve the leakproofness of valve port. When the valve port is closed, the sealing ring is abutted against the first sealing surface and is tightly attached to the inner wall of the annular groove, so that the sealing property of the valve port is improved.

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 shows a cross-sectional view of a freeze valve provided by an embodiment of the present invention;

FIG. 2 shows an enlarged partial cross-sectional view of the valve insert and valve seat of FIG. 1;

FIG. 3 shows a cross-sectional view of the valve seat of FIG. 1;

FIG. 4 shows a cross-sectional view of the valve cartridge of FIG. 1;

fig. 5 shows a cross-sectional view of the sealing ring of fig. 1.

Wherein the figures include the following reference numerals:

10. a valve seat; 11. a valve cavity; 12. a valve port; 121. a first sealing surface; 122. a cylindrical surface; 13. a necking structure;

20. a valve core; 21. an annular groove; 22. a second sealing surface; 23. a guide surface; 24. a transition surface;

30. a thermal bulb; 31. a seal ring;

51. an elastic member; 52. a drive spring.

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 to 5, an embodiment of the present invention provides an antifreeze valve including: the valve seat 10, the valve seat 10 has valve cavity 11 and valve port 12, the valve port 12 communicates with valve cavity 11, the valve port 12 has conical first sealing surface 121; the valve core 20 is movably arranged in the valve cavity 11 to close or open the valve port 12, the valve core 20 is provided with an annular groove 21, a conical second sealing surface 22 and a conical guide surface 23, the annular groove 21 is positioned between the second sealing surface 22 and the guide surface 23, the diameter A of the large end of the guide surface 23 is smaller than the diameter G of the small end of the second sealing surface 22, and the second sealing surface 22 is used for being in limit fit with the first sealing surface 121; and a seal ring 31 provided in the annular groove 21, wherein the seal ring 31 abuts the first seal surface 121 when the valve port 12 is closed.

By adopting the scheme, the conical guide surface 23 is arranged, and the diameter A of the large end of the guide surface 23 is smaller than the diameter G of the small end of the second sealing surface 22, so that the guide surface 23 can play a role in guiding, when the valve port 12 is closed by the valve core 20, the guide surface 23 can firstly enter the valve port 12, and sealing is carried out after the position of the valve core 20 is adjusted, so that sealing is more reliable. The sealing performance of the valve port 12 can be improved by arranging the first sealing surface 121 and the second sealing surface 22 in a limiting fit manner. When the valve port 12 is closed, the sealing ring 31 abuts against the first sealing surface 121, and the sealing ring 31 is tightly attached to the inner wall of the annular groove 21, thereby improving the sealing performance of the valve port 12.

Specifically, the valve port 12 further has a cylindrical surface 122, the cavity formed by the cylindrical surface 122 and the cavity formed by the first sealing surface 121, and the diameter a of the large end of the guide surface 23 is smaller than the diameter B of the cylindrical surface 122; wherein, when the valve port 12 is closed, the guide surface 23 extends into the cylindrical surface 122. By arranging the cylindrical surface 122 and making the diameter a of the large end of the guide surface 23 smaller than the diameter B of the cylindrical surface 122, the guide surface 23 can smoothly enter the cylindrical surface 122 to play a role in guiding.

Wherein, the valve core 20 is also provided with a cylindrical transition surface 24, the transition surface 24 is positioned between the guide surface 23 and the annular groove 21, and the diameter of the transition surface 24 is equal to the diameter A of the large end of the guide surface 23; wherein, when the valve port 12 is closed, the transition surface 24 extends into the cylindrical surface 122. The transition surface 24 is cylindrical, the diameter of the transition surface 24 is equal to the diameter A of the large end of the guide surface 23, when the valve port 12 is closed, the transition surface 24 can further play a role in guiding, so that the valve core 20 is guided and then seals the valve port 12, and the sealing effect is ensured.

Specifically, the taper angles of the first sealing surface 121 and the second sealing surface 22 are the same, and when the valve port 12 is closed, the second sealing surface 22 and the first sealing surface 121 abut. The first sealing surface 121 and the second sealing surface 22 with the same taper angle are arranged, so that when the valve port 12 is closed, the second sealing surface 22 can be tightly attached to the first sealing surface 121, and the sealing performance of the valve port 12 is improved.

Specifically, the sealing ring 31 is made of an elastic material, and when the valve port 12 is open, the outer diameter E of the sealing ring 31 is larger than the small end diameter B of the first sealing surface 121 and smaller than the large end diameter F of the first sealing surface 121. The sealing ring 31 is made of elastic material, the outer diameter E of the sealing ring 31 is larger than the small end diameter B of the first sealing surface 121 and smaller than the large end diameter F of the first sealing surface 121, when the valve port 12 is closed, the sealing ring 31 is extruded to generate elastic deformation, so that the sealing ring 31 can be abutted against the first sealing surface 121 and the inner wall of the annular groove 21, the sealing area is large, the sealing tightness of the valve port 12 is ensured, and the service life of the anti-freezing valve is prolonged.

As shown in fig. 3 and 4, the small end diameter G of the second sealing surface 22 is greater than the small end diameter B of the first sealing surface 121 and less than the large end diameter F of the first sealing surface 121. The small end diameter G of the second sealing surface 22 is set larger than the small end diameter B of the first sealing surface 121 so that the second sealing surface 22 does not protrude into the cylindrical surface 122; meanwhile, the diameter G of the small end of the second sealing surface 22 is set to be smaller than the diameter F of the large end of the first sealing surface 121, so that the second sealing surface 22 and the first sealing surface 121 can be effectively matched, and the sealing stability and reliability of the valve port 12 are improved.

Specifically, the small end diameter C of the guide surface 23 is smaller than the inner diameter D of the seal ring 31. This enables the seal ring 31 to pass smoothly through the guide surface 23, facilitating installation.

In this embodiment, the antifreeze valve further includes a driving spring 52, the driving spring 52 is sleeved on the valve core 20, one end of the driving spring 52 abuts against the stepped surface on the outer wall of the valve core 20, and the other end of the driving spring 52 abuts against the bottom wall of the valve cavity 11. By providing the driving spring 52, the valve element 20 is moved by applying the elastic force of the driving spring 52 to the valve element 20. When the bulb 30 moves towards one end of the valve port 12, the valve core 20 is pushed to move towards the valve port 12, so that the driving spring 52 is compressed, and the valve core 20 is abutted against the valve port 12, namely the valve port 12 is in a closed state; when the bulb 30 moves towards the end far away from the valve port 12, since the driving spring 52 is in a compressed state, the elastic force of the driving spring 52 pushes the valve core 20 to move towards the end far away from the valve port 12, i.e. the valve port 12 is in an open state.

Specifically, the antifreeze valve further comprises: the bulb 30 is movably arranged in the valve cavity 11, and one end of the bulb 30 is matched with the valve core 20. Through the arrangement of the thermal bulb 30, when the temperature changes, the length of the thermal bulb can be extended or shortened, so that the valve core 20 matched with the thermal bulb 30 moves, and the valve port 12 is opened or closed.

Further, the antifreeze valve further comprises: the elastic element 51 is sleeved on the thermal bulb 30, one end of the elastic element 51 close to the valve port 12 is abutted to the stepped surface of the thermal bulb 30, the end of the valve seat 10 far away from the valve port 12 is provided with a necking structure 13, and the necking structure 13 is abutted to one end of the elastic element 51 far away from the valve port 12. One end of the elastic member 51 abuts against the stepped surface of the thermal bulb 30, and the end away from the valve port 12 abuts against the throat structure 13, so that the elastic member 51 can be prevented from springing out. By providing the elastic member 51, pressure can be applied to the bulb 30 so that the bulb 30 and the valve element 20 abut against each other.

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. An antifreeze valve, comprising:

the valve seat (10) is provided with a valve cavity (11) and a valve port (12), the valve port (12) is communicated with the valve cavity (11), and the valve port (12) is provided with a conical first sealing surface (121);

the valve core (20) is movably arranged in the valve cavity (11) to close or open the valve port (12), the valve core (20) is provided with an annular groove (21), a conical second sealing surface (22) and a conical guide surface (23), the annular groove (21) is positioned between the second sealing surface (22) and the guide surface (23), the diameter A of the large end of the guide surface (23) is smaller than the diameter G of the small end of the second sealing surface (22), and the second sealing surface (22) is used for being in limit fit with the first sealing surface (121);

a seal ring (31) disposed within the annular groove (21), wherein the seal ring (31) abuts the first sealing surface (121) when the valve port (12) is closed.

2. The antifreeze valve according to claim 1, characterized in that the valve port (12) further has a cylindrical surface (122), the cylindrical surface (122) communicates with a cavity formed around the first sealing surface (121), the large end diameter A of the guide surface (23) is smaller than the diameter B of the cylindrical surface (122); wherein, under the condition that the valve port (12) is closed, the guide surface (23) extends into the cylindrical surface (122).

3. The antifreeze valve according to claim 2, wherein said spool (20) further has a cylindrical transition surface (24), said transition surface (24) being located between said guide surface (23) and said annular groove (21), said transition surface (24) having a diameter equal to the large end diameter A of said guide surface (23); wherein, under the condition that the valve port (12) is closed, the transition surface (24) extends into the cylindrical surface (122).

4. The antifreeze valve according to claim 1, wherein the taper angles of the first sealing surface (121) and the second sealing surface (22) are the same, and when the valve port (12) is closed, the second sealing surface (22) and the first sealing surface (121) abut.

5. The antifreeze valve according to claim 1, wherein the sealing ring (31) is made of an elastic material, and when the valve port (12) is open, the outer diameter E of the sealing ring (31) is larger than the small end diameter B of the first sealing surface (121) and smaller than the large end diameter F of the first sealing surface (121).

6. The antifreeze valve according to claim 1, wherein a small end diameter G of said second sealing surface (22) is larger than a small end diameter B of said first sealing surface (121) and smaller than a large end diameter F of said first sealing surface (121).

7. The antifreeze valve according to claim 1, characterized in that the small end diameter C of the guide surface (23) is smaller than the inner diameter D of the sealing ring (31).

8. The antifreeze valve according to claim 1, further comprising a driving spring (52), wherein the driving spring (52) is sleeved on the valve core (20), one end of the driving spring (52) abuts against a stepped surface on the outer wall of the valve core (20), and the other end of the driving spring (52) abuts against the bottom wall of the valve cavity (11).

9. The antifreeze valve according to claim 1, further comprising:

the bulb (30) is movably arranged in the valve cavity (11), and one end of the bulb (30) is matched with the valve core (20).

10. The antifreeze valve according to claim 9, further comprising:

the elastic piece (51) is sleeved on the thermal bulb (30), one end, close to the valve port (12), of the elastic piece (51) is abutted to the stepped surface of the thermal bulb (30), one end, far away from the valve port (12), of the valve seat (10) is provided with a necking structure (13), and the necking structure (13) is abutted to one end, far away from the valve port (12), of the elastic piece (51).