Refrigerant filling valve with exhaust function

Abstract

The refrigerant filling valve with the exhaust function comprises a valve body, the inner wall of the valve body is fixedly connected with an air cylinder, the lower surface of the valve body is fixedly connected with a first threaded pipe, the surface of the first threaded pipe is fixedly connected with a gasket, the inner wall of the air cylinder is in sliding connection with an exhaust mechanism, and the inner wall of the air cylinder is in sliding connection with the gasket. And the exhaust mechanism comprises a driving column slidably connected to the inner wall of the air cylinder, one end of the driving column is fixedly connected with a pressing head, the inner wall of the air cylinder is fixedly connected with a guide plate, and the inner wall of the guide plate is slidably connected with the surface of the driving column. The driving column drives the piston, the first O-shaped sealing ring and the second O-shaped sealing ring to move so as to avoid the arc-shaped air hole, air pressure can be exhausted into the air cylinder through the arc-shaped air hole at the moment, the air is exhausted through the multiple air holes, and the air is safely conveyed through the L-shaped pipe, so that in the refrigerant filling process, the air pressure is reduced, and the refrigerant filling efficiency is improved. And the filling safety can be ensured by manually and quickly exhausting air.

Description

Technical Field

[0001] This utility model relates to the technical field of refrigerant filling valve devices, and in particular to a refrigerant filling valve with venting function. Background Technology

[0002] A filling valve is a valve used to control the flow rate of liquids or gases. It is typically used in pipelines or containers for filling, discharging, mixing, or controlling the flow rate of media. The filling valve plays a crucial role in ensuring that the flow rate and pressure of the medium reach the required levels.

[0003] Existing refrigerant charging valves have a simple structure and lack venting function when transporting liquids. When the gas pressure connected to the inside of the charging valve is high, it is necessary to release the pressure to ensure the safety of charging. Therefore, a refrigerant charging valve with venting function is needed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a refrigerant charging valve with an exhaust function.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A refrigerant charging valve with venting function includes a valve body, an air cylinder fixedly connected to the inner wall of the valve body, a first threaded pipe fixedly connected to the lower surface of the valve body, a gasket fixedly connected to the surface of the first threaded pipe, and an venting mechanism slidably connected to the inner wall of the air cylinder.

[0007] The exhaust mechanism includes a drive column slidably connected to the inner wall of the air cylinder, a pressing head fixedly connected to one end of the drive column, a guide plate fixedly connected to the inner wall of the air cylinder, the inner wall of the guide plate slidably connected to the surface of the drive column, and a piston fixedly connected to the bottom end of the drive column.

[0008] The piston is fixedly connected to a first O-ring and a second O-ring. The surfaces of the first O-ring and the second O-ring are in contact with the inner wall of the air cylinder. The guide plate has multiple vent holes on its surface, and the inner wall of the air cylinder has multiple arc-shaped vent holes.

[0009] Preferably, a spring is fitted onto the surface of the drive column, one end of the spring is fixedly connected to the surface of the guide plate, and the other end of the spring is fixedly connected to the surface of the piston.

[0010] Preferably, an L-shaped tube is fixedly connected to the inner wall of the air cylinder, a one-way valve is fixedly connected to the surface of the L-shaped tube, and a miniature pressure gauge is fixedly connected to the inner wall of the valve body.

[0011] Preferably, an adjusting cap is rotatably connected to the upper surface of the valve body, and the same third O-ring is installed on the opposite side of the valve body and the adjusting cap. A second threaded pipe is fixedly connected to the inner wall of the adjusting cap.

[0012] Preferably, a rotating shaft is rotatably connected to the inner wall of the valve body, and a ball head is fixedly connected to one end of the rotating shaft, with the surface of the ball head in close contact with the inner wall of the valve body.

[0013] Preferably, a ring plate is fixedly connected to the inner wall of the valve body, the upper surface of the ring plate has multiple through holes, and a thin film is fixedly connected to the lower surface of the ring plate.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. When pressure needs to be released, the drive column drives the piston and the first O-ring seal and the second O-ring seal to avoid the arc-shaped vent. At this time, the air pressure can be discharged into the air cylinder through the arc-shaped vent and discharged through multiple vent holes. The gas is safely transported through the L-shaped pipe. The advantage of this is that during the refrigerant charging process, the gas can be manually and quickly discharged to ensure the safety of the charging process.

[0016] 2. When the pressure from the liquid above the membrane causes it to bulge, the liquid can flow down through the bulging pores of the membrane. When the membrane is pushed by the air pressure, it adheres to the surface of the ring plate, preventing gas from entering the regulating cap and achieving a one-way control effect. This prevents gas from entering the regulating cap and causing liquid backflow, ensuring safety. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a cross-sectional view of the valve body in this utility model;

[0019] Figure 3 This is a cross-sectional view of the arc-shaped vent in this utility model.

[0020] Figure 4 This is a cross-sectional view of the thin film in this utility model.

[0021] In the diagram: 1. Valve body; 2. Adjusting cap; 3. Second threaded tube; 4. Miniature pressure gauge; 5. First threaded tube; 6. Gasket; 7. Air cylinder; 8. L-shaped tube; 9. One-way valve; 10. Third O-ring seal; 11. Ring plate; 12. Ball head; 13. Rotating shaft; 14. Press head; 15. Drive column; 16. Piston; 17. Arc-shaped air hole; 18. Spring; 19. Guide plate; 20. Vent hole; 21. First O-ring seal; 22. Second O-ring seal; 23. Diaphragm; 24. Through hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figures 1-4 A refrigerant charging valve with venting function includes a valve body 1, an air cylinder 7 fixedly connected to the inner wall of the valve body 1, a first threaded pipe 5 fixedly connected to the lower surface of the valve body 1, a gasket 6 fixedly connected to the surface of the first threaded pipe 5, and a venting mechanism slidably connected to the inner wall of the air cylinder 7.

[0024] The exhaust mechanism includes a drive column 15 that is slidably connected to the inner wall of the air cylinder 7. A pressing head 14 is fixedly connected to one end of the drive column 15. A guide plate 19 is fixedly connected to the inner wall of the air cylinder 7. The inner wall of the guide plate 19 is slidably connected to the surface of the drive column 15. A piston 16 is fixedly connected to the bottom end of the drive column 15.

[0025] The piston 16 is fixedly connected to a first O-ring 21 and a second O-ring 22. The surfaces of the first O-ring 21 and the second O-ring 22 are in contact with the inner wall of the air cylinder 7. The guide plate 19 has multiple vent holes 20 on its surface and multiple arc-shaped vent holes 17 on the inner wall of the air cylinder 7.

[0026] In this utility model, an air cylinder 7 is provided for gas delivery. A first threaded pipe 5 is provided for threaded connection with an external pipeline. A pressing head 14 is provided, which allows the operator to drive the drive column 15 to move. A guide plate 19 is provided to keep the drive column 15 moving stably. A first O-ring 21 and a second O-ring 22 are provided to seal the inner wall of the air cylinder 7. Multiple arc-shaped air holes 17 are provided for air pressure discharge. Multiple vent holes 20 are provided to prevent obstruction during gas discharge.

[0027] A spring 18 is fitted onto the surface of the drive column 15. One end of the spring 18 is fixedly connected to the surface of the guide plate 19, and the other end of the spring 18 is fixedly connected to the surface of the piston 16.

[0028] In this invention, a spring 18 is provided to drive the piston 16 to reset when venting is not required.

[0029] An L-shaped tube 8 is fixedly connected to the inner wall of the air cylinder 7, a one-way valve 9 is fixedly connected to the surface of the L-shaped tube 8, and a miniature pressure gauge 4 is fixedly connected to the inner wall of the valve body 1.

[0030] In this utility model, an L-shaped pipe 8 is set to connect with an external pipeline for safe exhaust, a one-way valve 9 is set to prevent gas backflow, and a miniature pressure gauge 4 is set to observe the pressure changes on the inner wall of the valve body 1.

[0031] An adjusting cap 2 is rotatably connected to the upper surface of the valve body 1. The same third O-ring 10 is installed on the opposite side of the valve body 1 and the adjusting cap 2. A second threaded pipe 3 is fixedly connected to the inner wall of the adjusting cap 2.

[0032] In this utility model, a third O-ring seal 10 is provided to seal the connection between the valve body 1 and the adjusting cap 2. A second threaded tube 3 is provided to connect to the external filling tube, ensuring stability. The adjusting cap 2 is provided to rotate and adjust the position of the second threaded tube 3, facilitating filling operations.

[0033] A rotating shaft 13 is rotatably connected to the inner wall of the valve body 1. A ball head 12 is fixedly connected to one end of the rotating shaft 13. The surface of the ball head 12 is in close contact with the inner wall of the valve body 1.

[0034] In this invention, by setting a rotating shaft 13, the operator can rotate the rotating shaft 13 to drive the ball head 12 to rotate, and by setting the ball head 12, the flow of the injected liquid can be controlled.

[0035] A ring plate 11 is fixedly connected to the inner wall of the valve body 1. Multiple through holes 24 are opened on the upper surface of the ring plate 11, and a diaphragm 23 is fixedly connected to the lower surface of the ring plate 11.

[0036] In this invention, a ring plate 11 is set up and a supporting film 23 is installed. When the pressure from the liquid above the film 23 causes the film 23 to bulge, the liquid can flow down through the bulging holes of the film 23. When the film 23 is pushed by the pressure of the gas, it adheres to the surface of the ring plate 11 to prevent the gas from entering the regulating cap 2.

[0037] Working principle: In use, firstly, the first threaded tube 5 is threadedly connected to the pipe to be connected. Then, the second threaded tube 3 is threadedly connected to the external injection pipe. Next, liquid is injected into the second threaded tube 3. When the pressure from the liquid above the diaphragm 23 causes the diaphragm 23 to bulge, the liquid can flow down through the bulging holes of the diaphragm 23 and be transported through the ball head 12. When it is necessary to vent the micro pressure gauge 4, the operator presses the press head 14. The press head 14 drives the drive column 15 to slide, the drive column 15 drives the piston 16 to move, and the piston 16 drives the first O-ring seal 21 and the second O-ring seal 22 to move, thereby avoiding the movement of the arc-shaped vent 17. At this time, the air pressure can be discharged into the air cylinder 7 through the arc-shaped vent 17 and discharged through multiple vent holes 20. The gas is safely transported through the L-shaped tube 8. The one-way valve 9 prevents the gas from flowing back. With the above structure, if venting is required during the refrigerant charging process, the rapid venting can be manually adjusted to ensure the safety of the charging process.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A refrigerant charging valve with venting function, comprising a valve body (1), characterized in that, An air cylinder (7) is fixedly connected to the inner wall of the valve body (1), a first threaded pipe (5) is fixedly connected to the lower surface of the valve body (1), a gasket (6) is fixedly connected to the surface of the first threaded pipe (5), and an exhaust mechanism is slidably connected to the inner wall of the air cylinder (7). The exhaust mechanism includes a drive column (15) slidably connected to the inner wall of the air cylinder (7), a pressing head (14) fixedly connected to one end of the drive column (15), a guide plate (19) fixedly connected to the inner wall of the air cylinder (7), the inner wall of the guide plate (19) slidably connected to the surface of the drive column (15), and a piston (16) fixedly connected to the bottom end of the drive column (15). The piston (16) is fixedly connected to a first O-ring (21) and a second O-ring (22). The surfaces of the first O-ring (21) and the second O-ring (22) are in contact with the inner wall of the air cylinder (7). The guide plate (19) has multiple air holes (20) on its surface, and the inner wall of the air cylinder (7) has multiple arc-shaped air holes (17).

2. A refrigerant charging valve with venting function according to claim 1, characterized in that, A spring (18) is fitted on the surface of the drive column (15). One end of the spring (18) is fixedly connected to the surface of the guide plate (19), and the other end of the spring (18) is fixedly connected to the surface of the piston (16).

3. A refrigerant charging valve with venting function according to claim 1, characterized in that, An L-shaped tube (8) is fixedly connected to the inner wall of the air cylinder (7), a one-way valve (9) is fixedly connected to the surface of the L-shaped tube (8), and a miniature pressure gauge (4) is fixedly connected to the inner wall of the valve body (1).

4. A refrigerant charging valve with venting function according to claim 1, characterized in that, An adjusting cap (2) is rotatably connected to the upper surface of the valve body (1). The valve body (1) and the adjusting cap (2) are fitted with the same third O-ring seal (10). The inner wall of the adjusting cap (2) is fixedly connected with a second threaded pipe (3).

5. A refrigerant charging valve with venting function according to claim 1, characterized in that, The inner wall of the valve body (1) is rotatably connected to a rotating shaft (13), and one end of the rotating shaft (13) is fixedly connected to a ball head (12), the surface of the ball head (12) being in contact with the inner wall of the valve body (1).

6. A refrigerant charging valve with venting function according to claim 1, characterized in that, A ring plate (11) is fixedly connected to the inner wall of the valve body (1). Multiple through holes (24) are opened on the upper surface of the ring plate (11). A thin film (23) is fixedly connected to the lower surface of the ring plate (11).

Images