Novel suction and exhaust valve structure

Abstract

The utility model discloses a novel suction and exhaust valve structure which comprises a valve body, a first valve rod is arranged in the valve body in a penetrating mode, a second valve rod is connected to the right end of the first valve rod in a threaded mode, and a square connector is arranged on the outer side of the top of the joint of the first valve rod and the second valve rod and communicated with the top of the valve body. A first copper pipe and a second copper pipe are arranged on a square connector in a communicating mode, the square connector is additionally arranged on a valve body, and two connecting ports of a defrosting system pipeline and two connecting ports of an oil removing system pipeline are additionally arranged in the vertical direction of the square connector; a valve rod of a conventional structure is disassembled into the first valve rod and the second valve rod, then the first valve rod and the second valve rod are assembled into a complete assembly in a threaded connection mode, the first valve rod is machined through small materials, the second valve rod is machined through short and coarse materials, and machining loss is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigeration systems, in particular to a novel suction and exhaust valve structure. Background Art

[0002] As an important control device in the refrigeration system, the suction and exhaust valve is widely used in the fields of air conditioning, refrigeration, and transportation equipment. It plays the role of filling refrigerant in the refrigeration system and can be used for maintenance. When used in conjunction with the compressor, it can adjust the cooling capacity entering the compressor to make the refrigerant returning to the compressor uniform. The suction and exhaust valves currently on the market usually have three interfaces, the first is the liquid reservoir interface, the second is the condenser interface, and the third is the fluorine injection and maintenance interface (the two-way valve has no such interface); the valve stem is usually made of stainless steel, and the valve stem body is an integrated structure with one end larger and the other end smaller. During assembly, it is installed into the valve body cavity from the bottom seal; the valve stem of this structure is usually machined from large materials for the large and small ends, which has large processing losses, high costs, high processing difficulty, and difficult to ensure coaxiality, and poor bottom sealing performance.

[0003] The current suction and exhaust valves on the market have the following shortcomings: 1. The valve body has few interfaces and cannot meet the connection requirements with the defrost and oil removal system pipelines; 2. The valve stem needs to be machined from large materials for the large and small ends, which results in large material consumption and high cost; 3. The valve stem is processed from long materials, which is difficult to process, and the coaxiality is difficult to ensure, resulting in poor sealing performance. Utility Model Content

[0004] The purpose of the utility model is to provide a novel intake and exhaust valve structure to solve the problems raised in the above background technology.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A novel suction and exhaust valve structure includes a valve body, a No. 1 valve stem is inserted into the valve body, a No. 2 valve stem is threadedly screwed on the right end of the No. 1 valve stem, a square joint is provided on the outer side of the top of the connection between the No. 1 valve stem and the No. 2 valve stem, the square joint is connected to the top of the valve body, and a No. 1 copper tube and a No. 2 copper tube are connected to the square joint.

[0007] Preferably, the left end of the No. 1 valve stem is sleeved with two gaskets, and a No. 1 sealing gasket and a No. 2 sealing gasket are arranged between the two gaskets to form a sealing structure. The No. 1 valve stem and the left end of the valve body are sealed by the sealing structure, and the No. 2 valve stem and the right end of the valve body are sealed by a rubber ring.

[0008] Preferably, a plastic nut is screwed onto the left port of the valve body, and a joint is brazed onto the right port of the valve body.

[0009] Preferably, a side hole joint is provided at the rear side of the connection between the No. 1 valve stem and the No. 2 valve stem, the side hole joint is provided at the rear side of the valve body, and a nut is screwed at the outlet of the side hole joint.

[0010] Preferably, the valve body is connected to the square joint by brazing, and the No. 1 copper tube and the No. 2 copper tube are both connected to the square joint by brazing.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0012] In the utility model, a square joint is added to the valve body, and two connection ports of the defrosting and oil removal system pipelines are added in the vertical direction of the square joint; the valve stem of the conventional structure is decomposed into a No. 1 valve stem and a No. 2 valve stem, and then threaded connection is adopted to assemble them into a complete component, the No. 1 valve stem is processed with small material, and the No. 2 valve stem is processed with short and thick material, so as to reduce processing loss; it can also solve the problem that the coaxiality of the valve stem is difficult to ensure, the sealing performance of the suction and exhaust valve products is poor, and the valve stem must be locked with an ultra-standard torque to prevent leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a cross-sectional view of the utility model;

[0015] Figure 3 It is an enlarged view of the structure at A of the utility model;

[0016] Figure 4 It is a top view of the utility model;

[0017] In the figure: 01, tank filling valve interface; 02, defrost interface; 03, liquid storage device interface; 04, oil removal interface; 05, condenser interface; 1, plastic nut; 2, plug; 3, gasket; 4, No. 1 sealing gasket; 5, No. 2 sealing gasket; 6, valve body; 7, No. 1 valve stem; 8, No. 2 valve stem; 9, rubber ring; 10, joint; 11, square joint; 12, nut; 13, side hole joint; 14, No. 1 copper tube; 15, No. 2 copper tube. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0019] Example:

[0020] A new type of suction and exhaust valve structure, such as Figure 1-4As shown, it includes a valve body 6, a No. 1 valve stem 7 is inserted in the valve body 6, a No. 2 valve stem 8 is threadedly screwed on the right end of the No. 1 valve stem 7, a square joint 11 is provided on the outer side of the top of the connection between the No. 1 valve stem 7 and the No. 2 valve stem 8, the square joint 11 is connected to the top of the valve body 6, and a No. 1 copper tube 14 and a No. 2 copper tube 15 are connected to the square joint 11.

[0021] In a possible implementation, two gaskets 3 are provided on the left end of the No. 1 valve stem 7, and a No. 1 sealing gasket 4 and a No. 2 sealing gasket 5 are provided between the two gaskets 3 to form a sealing structure. The No. 1 valve stem 7 and the left end of the valve body 6 are sealed by the sealing structure, and the No. 2 valve stem 8 and the right end of the valve body 6 are sealed by a rubber ring 9.

[0022] In a possible implementation manner, a plastic nut 1 is screwed onto the left port of the valve body 6 , and a joint 10 is brazed onto the right port of the valve body 6 .

[0023] In a possible implementation, a side hole joint 13 is provided at the rear side of the connection between the No. 1 valve stem 7 and the No. 2 valve stem 8. The side hole joint 13 is provided at the rear side of the valve body 6. A nut 12 is screwed at the outlet of the side hole joint 13.

[0024] In a possible implementation manner, the valve body 6 is connected to the square joint 11 by brazing, and the No. 1 copper tube 14 and the No. 2 copper tube 15 are both connected to the square joint 11 by brazing.

[0025] In a possible implementation, Figure 1 As shown, the suction and exhaust valve is externally provided with 5 interfaces: the charging valve interface 01 is connected with the charging valve, the defrost interface 02 is connected with the digital unloading valve of the refrigeration system, the liquid reservoir interface 03 is connected with the liquid reservoir of the refrigeration system, the oil removal interface 04 is connected with the pressure sensor of the refrigeration system, and the condenser interface 05 is connected with the condenser of the refrigeration system.

[0026] In a possible implementation, Figure 2 As shown, the valve body 6 is made of brass forging, and the valve stem assembly is composed of a No. 1 valve stem 7, a No. 2 valve stem 8 and a rubber ring 9. The No. 1 valve stem 6 is processed with small material, and the No. 2 valve stem 7 is processed with short and thick material. The left end of the valve stem assembly is clamped by two gaskets 3 to clamp the No. 1 sealing gasket 4 and the No. 2 sealing gasket 5 to play the role of left sealing, and the rubber ring 9 presses the valve body 6 platform to play the role of right sealing. When the valve stem assembly is screwed clockwise to the right sealing state through the thread of the No. 1 valve stem 7, the passage between the suction and exhaust valve and the condenser is closed; when the valve stem assembly is screwed counterclockwise to leave the right sealing position through the thread of the No. 1 valve stem 7, the valve stem assembly is in an open state, and a passage is formed in the refrigeration system. The square joint 11 is fixed to the valve body 6 by welding, and the No. 1 copper tube 14 and the No. 2 copper tube 15 are assembled and welded vertically to the square joint 11, and the side hole joint 13 is connected to the liquid reservoir of the refrigeration system through the nut 12.

[0027] In the utility model, a square joint 11 is added to the valve body 6, and two connecting ports of the defrosting and degreasing system pipelines are added in the vertical direction of the square joint 11; the valve stem of the conventional structure is decomposed into a No. 1 valve stem 6 and a No. 2 valve stem 7, and then threaded connection is adopted to assemble them into a complete component, the No. 1 valve stem 6 is processed with small material, and the No. 2 valve stem 7 is processed with short and thick material, so as to reduce processing loss; it can also solve the problem that the coaxiality of the valve stem is difficult to ensure, the sealing performance of the suction and exhaust valve products is poor, and the valve stem must be locked with an ultra-standard torque to prevent leakage.

[0028] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel suction and exhaust valve structure, characterized in that: It comprises a valve body (6), wherein a No. 1 valve stem (7) is inserted into the valve body (6), a No. 2 valve stem (8) is screwed on the right end of the No. 1 valve stem (7), a square joint (11) is provided on the outer side of the top of the connection between the No. 1 valve stem (7) and the No. 2 valve stem (8), the square joint (11) is connected to the top of the valve body (6), and a No. 1 copper tube (14) and a No. 2 copper tube (15) are connected to the square joint (11).

2. A novel intake and exhaust valve structure as claimed in claim 1, characterized in that: The left end of the No. 1 valve stem (7) is sleeved with two gaskets (3), and a No. 1 sealing gasket (4) and a No. 2 sealing gasket (5) are arranged between the two gaskets (3) to form a sealing structure. The No. 1 valve stem (7) and the left end of the valve body (6) are sealed by the sealing structure, and the No. 2 valve stem (8) and the right end of the valve body (6) are sealed by a rubber ring (9).

3. A novel intake and exhaust valve structure as claimed in claim 1, characterized in that: A plastic nut (1) is screwed onto the left port of the valve body (6), and a joint (10) is brazed onto the right port of the valve body (6).

4. A novel intake and exhaust valve structure as claimed in claim 1, characterized in that: A side hole joint (13) is provided at the rear side of the connection between the No. 1 valve stem (7) and the No. 2 valve stem (8); the side hole joint (13) is provided at the rear side of the valve body (6); a nut (12) is screwed at the outlet of the side hole joint (13).

5. A novel intake and exhaust valve structure as claimed in claim 1, characterized in that: The valve body (6) is connected to the square joint (11) by brazing, and the No. 1 copper tube (14) and the No. 2 copper tube (15) are both connected to the square joint (11) by brazing.

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