CN216158296U

CN216158296U - Frost valve

Info

Publication number: CN216158296U
Application number: CN202122199098.6U
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, and the valve port is communicated with the valve cavity; the valve core is movably arranged in the valve cavity to close or open the valve port; the temperature bulb is movably arranged in the valve cavity, and one end of the temperature bulb is matched with the valve core; the guide sleeve is sleeved on the thermal bulb, and one end of the guide sleeve, which is close to the valve port, is abutted against the thermal bulb; the elastic piece is sleeved on the guide sleeve, and one end of the elastic piece, which is close to the valve port, is abutted against the guide sleeve or the thermal bulb. Through the technical scheme provided by the utility model, the problem of poor working stability of the bulb in 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 valve is provided with a temperature bulb, and the length of the temperature bulb is extended or shortened when the temperature changes, so that a valve core matched with the temperature bulb moves to open or close a valve port. An elastic element is usually sleeved on the thermal bulb of the antifreezing valve, and the thermal bulb is applied with elasticity through the elastic element. But the clearance between elastic component and the bulb is great, when the assembly, when the elastic component underpressure is uneven, can lead to the bulb to take place to deviate easily, and the bulb takes place to deviate the back motion resistance big or even can block and die, has influenced the stability of bulb at the during operation.

SUMMERY OF THE UTILITY MODEL

The utility model provides an antifreezing valve, which aims to solve the problem of poor working stability of a bulb in the antifreezing valve in the prior art.

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, and the valve port is communicated with the valve cavity; the valve core is movably arranged in the valve cavity to close or open the valve port; the temperature bulb is movably arranged in the valve cavity, and one end of the temperature bulb is matched with the valve core; the guide sleeve is sleeved on the thermal bulb, and one end of the guide sleeve, which is close to the valve port, is abutted against the thermal bulb; the elastic piece is sleeved on the guide sleeve, and one end of the elastic piece, which is close to the valve port, is abutted against the guide sleeve or the thermal bulb.

Furthermore, the guide sleeve comprises a sleeve body and a limiting ring arranged at one end of the sleeve body, the outer diameter of the limiting ring is larger than that of the sleeve body, and one side of the limiting ring is abutted against the thermal bulb; the elastic piece is sleeved on the sleeve body, and one end of the elastic piece close to the valve port is abutted against the other side of the limiting ring.

Furthermore, the elastic part is a spring, and the outer diameter A of the sleeve body is smaller than the inner diameter B of the elastic part.

Further, the outer diameter E of the limiting ring is smaller than the inner diameter F of the valve cavity.

Further, one end of the guide sleeve, which is far away from the valve port, is provided with a guide inclined surface.

Furthermore, 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 with one end of the elastic piece, which is far away from the valve port.

Further, the thermal bulb comprises a guide shaft, a limiting shaft and a driving shaft which are sequentially connected, wherein the diameter of the limiting shaft is larger than that of the guide shaft and that of the driving shaft, and the driving shaft is matched with the valve core; the guide sleeve is sleeved on the guide shaft, and one end of the guide sleeve, which is close to the valve port, is abutted against the limiting shaft.

Further, the inner diameter C of the guide sleeve is larger than the outer diameter D of the guide shaft.

Further, the case has the guiding hole, and the drive shaft is including the drive section, ejector pin and the direction section that connect gradually, drive section and spacing hub connection, and the diameter of ejector pin, direction section and drive section increases in proper order, and wherein, in the direction section penetrated the guiding hole, the outer wall of direction section and the inner wall cooperation of guiding hole, the terminal surface of direction section and the diapire butt of guiding hole.

Furthermore, the opening of the guide hole is provided with a chamfer, the valve core is also provided with an assembly hole communicated with the guide hole, the diameter of the assembly hole is larger than that of the guide hole, and the outer wall of the driving section is matched with the inner wall of the assembly hole.

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, and the valve port is communicated with the valve cavity; the valve core is movably arranged in the valve cavity to close or open the valve port; the temperature bulb is movably arranged in the valve cavity, and one end of the temperature bulb is matched with the valve core; the guide sleeve is sleeved on the thermal bulb, and one end of the guide sleeve, which is close to the valve port, is abutted against the thermal bulb; the elastic piece is sleeved on the guide sleeve, and one end of the elastic piece, which is close to the valve port, is abutted against the guide sleeve or the thermal bulb. By adopting the scheme, the guide sleeve is sleeved on the thermal bulb and the elastic piece is sleeved on the guide sleeve, so that a large gap between the elastic piece and the thermal bulb is eliminated, and the thermal bulb and the elastic piece can be guided by the guide sleeve. When assembling like this, because the direction and the limiting displacement of uide bushing, can reduce or avoid because the uneven temperature bulb that leads to of elastic component downforce takes place skew problem to the stability of temperature bulb work has been improved. Wherein, the inner wall of uide bushing and the outer wall cooperation of thermal bulb, the outer wall of uide bushing and the inner wall cooperation of elastic component can reduce the influence of elastic component to the thermal bulb when the assembly, have improved stability, the reliability of during operation.

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 a cross-sectional view of the guide sleeve of FIG. 1;

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

FIG. 4 shows a schematic diagram of the construction of the bulb of FIG. 1;

FIG. 5 shows a cross-sectional view of the valve cartridge of FIG. 1;

fig. 6 shows a schematic view of the structure of the elastic member of fig. 1.

Wherein the figures include the following reference numerals:

10. a valve seat; 11. a valve cavity; 12. a valve port; 13. a necking structure;

20. a valve core; 21. a guide hole; 22. an assembly hole;

30. a thermal bulb; 31. a guide shaft; 32. a limiting shaft; 33. a drive shaft; 331. a drive section; 332. a top rod; 333. a guide section;

40. a guide sleeve; 41. a sleeve body; 42. a limiting ring; 43. a guide slope;

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 6, an embodiment of the present invention provides an antifreeze valve including: the valve seat 10 is provided with a valve cavity 11 and a valve port 12, and the valve port 12 is communicated with the valve cavity 11; a valve core 20 movably disposed in the valve chamber 11 to close or open the valve port 12; 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; the guide sleeve 40 is sleeved on the thermal bulb 30, and one end of the guide sleeve 40 close to the valve port 12 is abutted against the thermal bulb 30; and the elastic element 51 is sleeved on the guide sleeve 40, and one end of the elastic element 51 close to the valve port 12 is abutted against the guide sleeve 40 or the thermal bulb 30.

By adopting the scheme, the guide sleeve 40 is arranged to be sleeved on the thermal bulb 30, and the elastic piece 51 is sleeved on the guide sleeve 40, so that a large gap between the elastic piece 51 and the thermal bulb 30 is eliminated, and the guide sleeve 40 can guide the thermal bulb 30 and the elastic piece 51. Thus, during assembly, due to the guiding and limiting effects of the guide sleeve 40, the problem that the thermal bulb 30 is deviated due to unbalanced pressure of the elastic member 51 can be reduced or avoided, and the working stability of the thermal bulb 30 is improved. Wherein, the inner wall of uide bushing 40 and the outer wall cooperation of bulb 30, the outer wall of uide bushing 40 and the inner wall cooperation of elastic component 51 can reduce the influence of elastic component to bulb 30 when the assembly, have improved stability, the reliability of during operation.

Specifically, the guide sleeve 40 comprises a sleeve body 41 and a limit ring 42 arranged at one end of the sleeve body 41, the outer diameter of the limit ring 42 is larger than that of the sleeve body 41, and one side of the limit ring 42 is abutted against the thermal bulb 30; the elastic member 51 is sleeved on the sleeve body 41, and one end of the elastic member 51 close to the valve port 12 is abutted against the other side of the limiting ring 42. The sleeve body 41 is arranged on the guide sleeve 40, and the elastic piece 51 is sleeved on the sleeve body 41, so that the elastic piece 51 does not directly act on the thermal bulb 30, and the problem that the thermal bulb 30 is influenced by the elastic piece 51 to deviate during working is reduced or avoided; the elastic member 51 is provided to abut against the stopper ring 42 by the stopper ring 42, so that the elastic force of the elastic member 51 can be applied to the bulb 30 through the stopper ring 42, and the bulb 30 is pressed against the valve body 20.

The elastic member 51 is a spring, and the outer diameter a of the sleeve body 41 is smaller than the inner diameter B of the elastic member 51. In the present application, the elastic member 51 is provided as a spring, which has a large elastic deformation capability and a strong recovery capability; the outer diameter A of the sheath 41 is smaller than the inner diameter B of the elastic member 51, so that the elastic member 51 can be sleeved on the sheath 41, and a gap can be formed for fluid to pass through.

Further, the outer diameter E of the retainer ring 42 is smaller than the inner diameter F of the valve chamber 11. The arrangement can ensure that a gap is formed between the limiting ring 42 and the inner wall of the valve cavity 11 for fluid to pass through, is convenient to mount, and avoids the guide sleeve 40 from being blocked when moving along with the thermal bulb 30.

Specifically, the end of the guide sleeve 40 away from the valve port 12 has a guide slope 43. Through setting up direction inclined plane 43, when the bulb 30 moves towards the one end of keeping away from the valve port, can lead in advance and just, avoid uide bushing 40 card to die in elastic component 51 inner circle to the stability of bulb 30 at the during operation has been improved.

Specifically, one end of the valve seat 10 away from the valve port 12 is provided with a necking structure 13, and the necking structure 13 is abutted with one end of the elastic member 51 away from the valve port 12. By providing the necking structure 13 to abut against one end of the elastic member 51, the elastic member 51 can be limited, and the elastic member 51 is prevented from popping out. In this embodiment, the necking structure 13 and the elastic member 51 may be connected by riveting, and the structure is stable, firm and convenient for assembly.

During riveting assembly, the pressure of the elastic member 51 is unbalanced, and if the guide sleeve 40 is not used for guiding, the temperature bulb 30 can incline, so that the temperature bulb 30 has large resistance to up-and-down movement and the action is ineffective. After the guide sleeve 40 is arranged, the eccentric of the thermal bulb 30 during riveting can be prevented on one hand, and the eccentric of the thermal bulb 30 during movement can be prevented on the other hand, so that the movement reliability of the thermal bulb 30 is improved, and the frost valve is more flexible in action and better in consistency during valve opening and closing.

Specifically, the bulb 30 comprises a guide shaft 31, a limit shaft 32 and a drive shaft 33 which are connected in sequence, wherein the diameter of the limit shaft 32 is larger than that of the guide shaft 31 and that of the drive shaft 33, and the drive shaft 33 is matched with the valve core 20; the guide sleeve 40 is sleeved on the guide shaft 31, and one end of the guide sleeve 40 close to the valve port 12 is abutted against the limiting shaft 32. The guide shaft 31 is arranged to facilitate the guide sleeve 40 to be sleeved on the guide shaft 31; the limiting shaft 32 is arranged to be in limiting fit with the inner wall of the valve cavity 11 in the axial direction, so that the moving range of the thermal bulb 30 is limited, and the elastic force exerted by the elastic piece 51 can be borne; by providing the driving shaft 33 to engage with the valve body 20, when the bulb 30 is extended, the valve body 20 can be driven to move, and the valve body 20 can close the valve port 12.

The inner diameter C of the guide sleeve 40 is larger than the outer diameter D of the guide shaft 31. This arrangement facilitates the smooth fitting of the guide sleeve 40 over the guide shaft 31.

Further, the valve core 20 is provided with a guide hole 21, the driving shaft 33 comprises a driving section 331, a top rod 332 and a guide section 333 which are connected in sequence, the driving section 331 is connected with the limiting shaft 32, the diameters of the top rod 332, the guide section 333 and the driving section 331 are increased in sequence, the guide section 333 penetrates into the guide hole 21, the outer wall of the guide section 333 is matched with the inner wall of the guide hole 21, and the end face of the guide section 333 is abutted to the bottom wall of the guide hole 21.

The valve body 20 is provided with a guide hole 21 for guiding the guide section 333. By adopting the arrangement, when the valve core 20 is well guided, the guide function can be realized on the thermal bulb 30; when the bulb 30 is well guided, the valve core 20 can be guided. Therefore, the valve core 20 and the thermal bulb 30 can mutually play a role in guiding, so that the guiding is more stable and reliable, the stability of the thermal bulb 30 in work is ensured, and the sealing performance of the valve core 20 when the valve port 12 is closed is improved.

Wherein, the opening of the guide hole 21 has a chamfer, the valve core 20 also has a fitting hole 22 communicated with the guide hole 21, the diameter of the fitting hole 22 is larger than that of the guide hole 21, and the outer wall of the driving section 331 is matched with the inner wall of the fitting hole 22. The opening of the guide hole 21 is chamfered, and the diameter of the fitting hole 22 is larger than that of the guide hole 21, so that the bulb 30 and the valve body 20 can be easily fitted. In addition, the outer wall of the driving section 331 is matched with the inner wall of the mounting hole 22, so that the valve core 20 and the bulb 30 can also play a guiding role mutually.

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.

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), and the valve port (12) is communicated with the valve cavity (11);

a valve core (20) movably arranged in the valve cavity (11) to close or open the valve port (12);

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);

the guide sleeve (40) is sleeved on the thermal bulb (30), and one end, close to the valve port (12), of the guide sleeve (40) is abutted to the thermal bulb (30);

the elastic piece (51) is sleeved on the guide sleeve (40), and one end, close to the valve port (12), of the elastic piece (51) is abutted against the guide sleeve (40) or the thermal bulb (30).

2. The antifreeze valve according to claim 1, wherein the guide sleeve (40) comprises a sleeve body (41) and a limit ring (42) arranged at one end of the sleeve body (41), the outer diameter of the limit ring (42) is larger than that of the sleeve body (41), and one side of the limit ring (42) is abutted with the hot bulb (30); the elastic piece (51) is sleeved on the sleeve body (41), and one end of the elastic piece (51) close to the valve port (12) is abutted against the other side of the limiting ring (42).

3. The antifreeze valve according to claim 2, wherein said elastic member (51) is a spring, and an outer diameter A of said sleeve body (41) is smaller than an inner diameter B of said elastic member (51).

4. The antifreeze valve according to claim 2, characterized in that the outer diameter E of the stop ring (42) is smaller than the inner diameter F of the valve chamber (11).

5. The antifreeze valve according to claim 1, wherein an end of the guide sleeve (40) remote from the valve port (12) has a guide slope (43).

6. The antifreeze valve according to claim 1, characterized in that the end of the valve seat (10) away from the valve port (12) has a throat structure (13), and the throat structure (13) abuts with the end of the elastic member (51) away from the valve port (12).

7. The antifreeze valve according to claim 1, wherein the bulb (30) comprises a guide shaft (31), a limit shaft (32) and a drive shaft (33) which are connected in sequence, wherein the diameter of the limit shaft (32) is larger than that of the guide shaft (31) and the drive shaft (33), and the drive shaft (33) is matched with the valve core (20); the guide sleeve (40) is sleeved on the guide shaft (31), and one end, close to the valve port (12), of the guide sleeve (40) is abutted against the limiting shaft (32).

8. The antifreeze valve according to claim 7, wherein an inner diameter C of said guide sleeve (40) is larger than an outer diameter D of said guide shaft (31).

9. The antifreeze valve according to claim 7, wherein the valve core (20) has a guide hole (21), the driving shaft (33) comprises a driving section (331), a push rod (332) and a guide section (333) which are connected in sequence, the driving section (331) is connected with the limit shaft (32), the diameters of the push rod (332), the guide section (333) and the driving section (331) are increased in sequence, wherein the guide section (333) penetrates into the guide hole (21), the outer wall of the guide section (333) is matched with the inner wall of the guide hole (21), and the end surface of the guide section (333) is abutted against the bottom wall of the guide hole (21).

10. The antifreeze valve according to claim 9, wherein an opening of the guide hole (21) has a chamfer, the spool (20) further has a fitting hole (22) communicating with the guide hole (21), a diameter of the fitting hole (22) is larger than a diameter of the guide hole (21), and an outer wall of the driving section (331) and an inner wall of the fitting hole (22) are engaged.