CN220338750U

CN220338750U - Anti-blocking expansion valve

Info

Publication number: CN220338750U
Application number: CN202321786764.9U
Authority: CN
Inventors: 刘忠奎
Original assignee: Sichuan Chengliang Refrigeration Equipment Co ltd
Current assignee: Sichuan Chengliang Refrigeration Equipment Co ltd
Priority date: 2023-07-07
Filing date: 2023-07-07
Publication date: 2024-01-12
Anticipated expiration: 2033-07-07

Abstract

The utility model discloses an anti-blocking expansion valve, which comprises: the valve body is fixedly provided with a valve cover at the upper end, the upper end of the valve cover is fixedly connected with a connecting pipe, and the right end face of the valve body is fixedly provided with a pressure sensor; the valve rod is fixedly connected to the lower end of the piston, the lower end of the valve rod is fixedly connected with a valve core, the left end face of the valve body is fixedly connected with a wet steam outlet pipe, and the lower end of the valve core is connected with a spring; the first connecting hole is formed in the valve body, and a connecting pin is connected in the first connecting hole in a penetrating manner; the liquid inlet pipe is connected to the lower end of the valve body, and a liquid inlet is formed in the liquid inlet pipe. This prevent expansion valve of jam, conveniently detect the hydraulic pressure value, and the throttle is effectual, has solved current expansion valve simultaneously inconvenient clearance to the throttle position in the valve body, and the medium easily causes the problem of jam in throttle position clot after long-time use.

Description

Anti-blocking expansion valve

Technical Field

The utility model relates to the technical field of expansion valves, in particular to an anti-blocking expansion valve.

Background

The thermal expansion valve is often called as an expansion valve, is an important component in a refrigeration system, is generally arranged between a liquid storage cylinder and an evaporator, throttles a medium-temperature high-pressure liquid refrigerant into low-temperature low-pressure wet steam through the expansion valve, and absorbs heat in the evaporator to achieve a refrigeration effect;

the expansion valve of CN216114808U includes an expansion valve body, the expansion valve body has an inner cavity, two sides of the expansion valve body are respectively connected with a refrigerant inlet pipe and a wet steam outlet pipe, the refrigerant inlet pipe and the wet steam outlet pipe are both communicated with the inner cavity of the expansion valve body, and a steam guiding structure for spirally spraying wet steam is arranged in the inner cavity of the wet steam outlet pipe. The expansion valve can effectively improve the refrigeration efficiency of the refrigeration equipment adopting the expansion valve and reduce the usage amount of the refrigerant.

However, the above prior art solutions have the following drawbacks, such as: the throttle position in the valve body is inconvenient to clean, the medium is easy to block at the throttle position after long-time use, most of the existing expansion valves are inconvenient to detect the hydraulic pressure value, and certain use defects exist, so that the expansion valve capable of preventing the blockage is provided, and the problem in the above is solved.

Disclosure of Invention

The utility model aims to provide an anti-blocking expansion valve, which solves the problems that the existing expansion valve provided in the background art is inconvenient to clean the throttle position in a valve body, a medium is easy to block at the throttle position after long-time use, and most of the existing expansion valves are inconvenient to detect the hydraulic value.

In order to achieve the above purpose, the present utility model provides the following technical solutions: an anti-clogging expansion valve comprising:

the valve body is fixedly provided with a valve cover at the upper end, a pressure diaphragm is fixedly connected inside the valve body, a connecting pipe is fixedly connected at the upper end of the valve cover, a temperature sensing bag is fixedly connected at the right end of the connecting pipe, a pressure sensor is fixedly arranged at the right end surface of the valve body, and a piston is arranged inside the valve body;

the valve rod is fixedly connected to the lower end of the piston, the lower end of the valve rod is fixedly connected with a valve core, the left end face of the valve body is fixedly connected with a wet steam outlet pipe, the lower end of the valve core is connected with a spring, the lower end of the spring is connected with a connecting assembly, and the connecting assembly comprises a mounting ring and a sealing ring;

the first connecting hole is formed in the valve body, and a connecting pin is connected in the first connecting hole in a penetrating manner;

the liquid inlet pipe, its lower extreme of connecting at the valve body, the inlet has been seted up to the inside of liquid inlet pipe, and the upper end of inlet is connected with the mounting groove, the second connecting hole has been seted up to the inside of liquid inlet pipe, and the below of second connecting hole is provided with the locking ring.

Preferably, the inner surface of the valve body is fixedly connected with a baffle ring, and the baffle ring is arranged on the outer side of the valve rod.

Preferably, the valve body and the liquid inlet pipe are in threaded connection with the engagement pin through the first connecting hole and the second connecting hole respectively.

Preferably, the lower end of the valve core is arranged in a conical shape, and the spring is sleeved on the outer side of the valve core.

Preferably, the mounting ring is connected to the lower end of the valve body, and the spring is fixedly connected to the upper end of the mounting ring.

Preferably, the outer surface of the mounting ring is fixedly connected with a sealing ring, and the sealing ring is tightly attached to the inner surface of the valve body.

Preferably, the mounting groove is formed in the upper end face of the liquid inlet pipe, and the liquid inlet pipe is connected with the connecting component in a clamping mode through the mounting groove.

Compared with the prior art, the utility model has the beneficial effects that: the anti-blocking expansion valve is convenient to detect the hydraulic value, has a good throttling effect, and solves the problems that the existing expansion valve is inconvenient to clear the throttling position in the valve body and the medium is easy to clot at the throttling position to cause blocking after long-time use;

1. the pressure sensor is fixedly arranged on the right end face of the valve body, and the pressure of a medium between the pressure diaphragm and the piston can be measured through the pressure sensor, so that a person can observe a pressure value conveniently, the pressure is prevented from being too large, and the practicability is better;

2. the valve is provided with a valve core, a spring and a pressure diaphragm, the lower end of the valve core is arranged in a conical shape, the spring is sleeved on the outer side of the valve core, the pressure of the evaporator is transmitted to the valve body through a temperature sensing bulb, the pressure diaphragm is pressed and deformed, and then the piston, the valve rod and the valve core are driven to move up and down and compress the spring to throttle;

3. be equipped with feed liquor pipe, coupling assembling and valve body, through separating locking ring and linking round pin, make valve body and feed liquor pipe separation, can take out coupling assembling and spring, be connected with the sealing ring through the surface fixedly connected with of collar, and the sealing ring is closely laminated with the internal surface of valve body and is connected, increases the leakproofness of valve body and feed liquor pipe junction.

Drawings

FIG. 1 is a schematic diagram of a front cross-sectional structure of the present utility model;

FIG. 2 is an enlarged schematic view of the structure of FIG. 1A according to the present utility model;

FIG. 3 is a schematic diagram showing a cross-sectional structure of a liquid inlet pipe and a second connecting hole according to the present utility model;

fig. 4 is a schematic diagram of the overall structure of the connecting assembly in the present utility model.

In the figure: 1. a valve body; 2. a valve cover; 3. a pressure diaphragm; 4. a connecting pipe; 5. a temperature sensing bag; 6. a pressure sensor; 7. a baffle ring; 8. a piston; 9. a valve stem; 10. a valve core; 11. a wet steam outlet pipe; 12. a spring; 13. a connection assembly; 1301. a mounting ring; 1302. a seal ring; 14. a first connection hole; 15. a connecting pin; 16. a liquid inlet pipe; 17. a mounting groove; 18. a liquid inlet; 19. a second connection hole; 20. a locking ring.

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.

Referring to fig. 1-4, the present utility model provides a technical solution: an anti-clogging expansion valve comprising: the valve body 1, the upper end of the valve body 1 is fixedly connected with the valve cover 2, the inside of the valve body 1 is fixedly connected with the pressure diaphragm 3, the right end face of the valve body 1 is fixedly connected with the pressure sensor 6, the pressure of a medium between the pressure diaphragm 3 and the piston 8 can be measured through the pressure sensor 6 as shown in fig. 1 and 2, the pressure sensor 6 can adopt an SCYG314 model product, the upper end of the valve cover 2 is fixedly connected with the connecting pipe 4, the right end of the connecting pipe 4 is fixedly connected with the temperature sensing bulb 5, the inside of the valve body 1 is provided with the piston 8, the lower end of the piston 8 is fixedly connected with the valve rod 9, the lower end of the valve rod 9 is fixedly connected with the valve core 10, the inner surface of the valve body 1 is fixedly connected with the baffle ring 7, and the baffle ring 7 is arranged on the outer side of the valve rod 9 and plays a limiting role on the piston 8 through the baffle ring 7;

as shown in fig. 1, the lower end of the valve core 10 is connected with a spring 12, the lower end of the spring 12 is connected with a connecting component 13, the connecting component 13 comprises a mounting ring 1301 and a sealing ring 1302, the mounting ring 1301 is connected with the lower end of the valve body 1, the spring 12 is fixedly connected with the upper end of the mounting ring 1301, the left end surface of the valve body 1 is fixedly connected with a wet steam outlet pipe 11, a first connecting hole 14 is formed in the valve body 1, a connecting pin 15 is connected in the first connecting hole 14 in a penetrating manner, the lower end of the valve body 1 is connected with a liquid inlet pipe 16, a second connecting hole 19 is formed in the liquid inlet pipe 16, a locking ring 20 is arranged below the second connecting hole 19, the valve body 1 and the liquid inlet pipe 16 are respectively connected with the connecting pin 15 through threads through the first connecting hole 14 and the second connecting hole 19, and the locking ring 20 are connected on the outer side of the connecting pin 15 in a threaded manner, so that the valve body 1 and the liquid inlet pipe 16 are locked;

specifically, as shown in fig. 3 and 4, since the liquid inlet 18 is formed in the liquid inlet 16, the mounting groove 17 is connected to the upper end of the liquid inlet 18, and the liquid inlet 16 is connected to the connecting component 13 in a clamped manner through the mounting groove 17, meanwhile, the lower end of the valve core 10 is tapered, and the spring 12 is sleeved on the outer side of the valve core 10, when the spring 12 needs to be disassembled, the locking ring 20 is separated from the engagement pin 15, so that the valve body 1 is separated from the liquid inlet 16, the connecting component 13 and the spring 12 can be taken out, the sealing ring 1302 is fixedly connected to the outer surface of the mounting ring 1301, and the sealing ring 1302 is tightly attached to the inner surface of the valve body 1, so that the tightness of the connecting part of the valve body 1 and the liquid inlet 16 is increased.

Standard parts used in the utility model can be purchased from the market, special-shaped parts can be customized according to the description of the specification and the drawings, the specific connection modes of all parts adopt conventional means such as mature bolts, rivets and welding in the prior art, the machinery, the parts and the equipment adopt conventional modes in the prior art, and the circuit connection adopts conventional connection modes in the prior art, so that details are not described in detail in the specification, and the utility model belongs to the prior art known to the person skilled in the art.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. An anti-clogging expansion valve, characterized in that: comprising the following steps:

the valve comprises a valve body (1), wherein a valve cover (2) is fixedly arranged at the upper end of the valve body (1), a pressure diaphragm (3) is fixedly connected inside the valve body (1), a connecting pipe (4) is fixedly connected at the upper end of the valve cover (2), a temperature sensing bag (5) is fixedly connected at the right end of the connecting pipe (4), a pressure sensor (6) is fixedly arranged at the right end face of the valve body (1), and a piston (8) is arranged inside the valve body (1);

the valve rod (9) is fixedly connected to the lower end of the piston (8), the lower end of the valve rod (9) is fixedly connected with the valve core (10), the left end face of the valve body (1) is fixedly connected with the wet steam outlet pipe (11), the lower end of the valve core (10) is connected with the spring (12), the lower end of the spring (12) is connected with the connecting component (13), and the connecting component (13) comprises the mounting ring (1301) and the sealing ring (1302);

the first connecting hole (14) is formed in the valve body (1), and a connecting pin (15) is connected in the first connecting hole (14) in a penetrating manner;

the liquid inlet pipe (16) is connected to the lower end of the valve body (1), a liquid inlet (18) is formed in the liquid inlet pipe (16), an installation groove (17) is formed in the upper end of the liquid inlet (18), a second connecting hole (19) is formed in the liquid inlet pipe (16), and a locking ring (20) is arranged below the second connecting hole (19).

2. An anti-clogging expansion valve as recited in claim 1 wherein: the inner surface of the valve body (1) is fixedly connected with a baffle ring (7), and the baffle ring (7) is arranged on the outer side of the valve rod (9).

3. An anti-clogging expansion valve as recited in claim 1 wherein: the valve body (1) and the liquid inlet pipe (16) are in threaded connection with the connecting pin (15) through a first connecting hole (14) and a second connecting hole (19) respectively.

4. An anti-clogging expansion valve as recited in claim 1 wherein: the lower end of the valve core (10) is arranged in a conical shape, and the spring (12) is sleeved on the outer side of the valve core (10).

5. An anti-clogging expansion valve as recited in claim 1 wherein: the mounting ring (1301) is connected to the lower end of the valve body (1), and the spring (12) is fixedly connected to the upper end of the mounting ring (1301).

6. An anti-clogging expansion valve as recited in claim 5 wherein: the outer surface of the mounting ring (1301) is fixedly connected with a sealing ring (1302), and the sealing ring (1302) is tightly attached to the inner surface of the valve body (1).

7. An anti-clogging expansion valve as recited in claim 1 wherein: the mounting groove (17) is formed in the upper end face of the liquid inlet pipe (16), and the liquid inlet pipe (16) is connected with the connecting component (13) in a clamping mode through the mounting groove (17).