Refrigerant one-way valve

Abstract

An upper cover is installed on the top of a valve body, a guide cylinder is fixedly installed in the middle of the top end of the valve body, an extrusion spring is connected to the surface of the guide cylinder in a sleeved mode, a lifting round rod is movably installed in the guide cylinder, and a sealing pressing plate is fixedly connected to the top end of the lifting round rod. The guide cylinder and the lifting round rod are used in a matched mode, the position of the sealing pressing plate is guided and limited, the sealing pressing plate is made to advance along a preset track, and the sealing pressing plate is stable and smooth when pressed to ascend and descend. The situation that the one-way valve cannot operate normally due to the fact that the sealing pressing plate inclines and is jammed is prevented, the sealing pressing plate can be effectively driven to ascend and descend through the contraction and extension reset capacity of the extrusion spring, the one-way conveying effect is achieved, and the sealing performance between the sealing pressing plate and the inner wall of the upper cover is improved through the inner sealing ring.

Description

Technical Field

[0001] The utility model relates to the technical field of one-way valves, in particular to a refrigerant one-way valve. Background Art

[0002] The refrigerant one-way valve realizes the function of switching through pressure control. The one-way valve is also called a check valve or a non-return valve. It is used in hydraulic systems to prevent oil flow from flowing in reverse, or in pneumatic systems to prevent compressed air from flowing in reverse. There are two types of one-way valves: straight-through and right-angle. The straight-through one-way valve is installed on the pipeline with a threaded connection. The right-angle one-way valve has three forms: threaded connection, plate connection and flange connection. The one-way valve is a directional control valve that can only flow in one direction but not in the reverse direction. The one-way valve is used in situations where reverse flow is not allowed. Refrigerant is a substance that transfers heat through evaporation and condensation in the air-conditioning system, and it easily absorbs heat to become a gas and easily releases heat to become a liquid;

[0003] However, when the one-way valve is currently in use, the sealing pressure plate lacks a guide limit. Under pressure, the sealing pressure plate is prone to tilt and get stuck when moving, causing the one-way valve to be unable to be used normally. Therefore, the utility model provides a refrigerant one-way valve to meet people's needs. Utility Model Content

[0004] The utility model provides a refrigerant one-way valve, which can effectively solve the problem proposed in the above background technology that the sealing pressure plate lacks guide limit when the one-way valve is used, and under pressure, the sealing pressure plate is easily skewed and stuck when moving, resulting in the one-way valve cannot be used normally.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a refrigerant one-way valve, comprising a valve body, an upper cover is installed on the top of the valve body, a guide cylinder is fixedly installed in the middle of the top of the valve body, an extrusion spring is sleeved on the surface of the guide cylinder, a lifting round rod is movably installed inside the guide cylinder, a sealing pressure plate is fixedly connected to the top of the lifting round rod, an inner sealing ring is sleeved on the edge of the top of the sealing pressure plate, an upper sealing ring is sleeved on the edge of the top of the upper cover, and a lower sealing ring is sleeved on the edge of the top of the valve body;

[0006] The inner wall of the top of the valve body is provided with positioning grooves at equal intervals along the circumferential direction, the top of the valve body is provided with a threaded hole at a position on one side of the positioning groove, the edge of the bottom end of the upper cover is fixedly provided with positioning protrusions at equal intervals along the circumferential direction, and the edge of the bottom of the valve body is provided with mounting bolts at equal intervals along the circumferential direction.

[0007] Preferably, the top and bottom ends of the extrusion spring are respectively connected to the top of the inside of the sealing pressure plate and the top of the valve body, and the surface wall of the lifting round rod is tightly attached to the inner wall of the guide cylinder.

[0008] Preferably, the edge of the sealing pressure plate is in contact with the inner wall of the upper cover, and the upper cover and the sealing pressure plate are both made of high-pressure resistant metal material.

[0009] Preferably, the length and width of the positioning protrusion are the same as the length and width of the positioning groove, and the positioning protrusion is movably embedded in the interior of the positioning groove.

[0010] Preferably, the bottom of the mounting bolt extends to the inside of the threaded hole, and the top of the valve body and the bottom of the upper cover are fixedly connected by the mounting bolt.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the utility model has a scientific and reasonable structure and is safe and convenient to use:

[0012] 1. A guide cylinder, an extrusion spring, a lifting rod, a sealing pressure plate and an inner sealing ring are provided. The guide cylinder and the lifting rod are used in coordination to guide and limit the position of the sealing pressure plate, so that it moves along a predetermined track and remains stable and smooth when lifted and lowered under pressure, thereby preventing the sealing pressure plate from tilting and getting stuck, causing the one-way valve to fail to operate normally. The contraction, extension and reset ability of the extrusion spring itself can effectively drive the sealing pressure plate to rise and fall, thereby playing a role in one-way transportation, and the inner sealing ring increases the sealing between the sealing pressure plate and the inner wall of the upper cover.

[0013] 2. A positioning groove, a threaded hole, a positioning protrusion and a mounting bolt are provided. The upper cover is positioned by the coordinated use of the positioning groove and the positioning protrusion. When the upper cover and the valve body are assembled and fixed, the positioning protrusion corresponds to and engages with the positioning groove from above to determine and limit the position of the upper cover. Then, the mounting bolt and the threaded hole can directly correspond, which provides great convenience for tightening the mounting bolt without manual alignment. The mounting bolt has a stronger fixation on the upper cover, making the connection between the upper cover and the valve body stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0015] In the attached picture:

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the installation structure of the lifting round rod of the utility model;

[0018] Figure 3 It is a schematic diagram of the installation structure of the installation bolt of the utility model;

[0019] Figure 4It is a schematic diagram of the installation structure of the positioning protrusion of the utility model;

[0020] Numbers in the figure: 1, valve body; 2, upper cover; 3, guide cylinder; 4, extrusion spring; 5, lifting rod; 6, sealing pressure plate; 7, inner sealing ring; 8, upper sealing ring; 9, lower sealing ring; 10, positioning groove; 11, threaded hole; 12, positioning bump; 13, mounting bolt. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0022] Example: Figure 1-4 As shown, the utility model provides a technical solution, a refrigerant one-way valve, including a valve body 1, an upper cover 2 is installed on the top of the valve body 1, a guide cylinder 3 is fixedly installed in the middle of the top of the valve body 1, an extrusion spring 4 is sleeved on the surface of the guide cylinder 3, and a lifting rod 5 is movably installed inside the guide cylinder 3, the top and bottom ends of the extrusion spring 4 are respectively connected to the top of the inside of the sealing pressure plate 6 and the top of the valve body 1, the surface wall of the lifting rod 5 is tightly attached to the inner wall of the guide cylinder 3, the top of the lifting rod 5 is fixedly connected to the sealing pressure plate 6, the edge of the sealing pressure plate 6 is in contact with the inner wall of the upper cover 2, the upper cover 2 and the sealing pressure plate 6 are both made of high-pressure resistant metal material, so that the upper cover 2 and the sealing pressure plate 6 can not only be used in a low-pressure environment, but also can be used in a low-pressure environment. The one-way valve can be used in the following conditions and can also adapt to high-pressure environments, thereby improving the applicable scope of the one-way valve. The edge of the top of the sealing plate 6 is sleeved with an inner sealing ring 7, the edge of the top of the upper cover 2 is sleeved with an upper sealing ring 8, and the edge of the top of the valve body 1 is sleeved with a lower sealing ring 9. Through the coordinated use of the guide cylinder 3 and the lifting rod 5, the position of the sealing plate 6 is guided and limited, so that it moves along a predetermined track and remains stable and smooth when lifted and lowered under pressure, thereby preventing the sealing plate 6 from tilting and getting stuck, causing the one-way valve to fail to operate normally. The contraction, elongation and reset ability of the extrusion spring 4 itself can effectively drive the sealing plate 6 to rise and fall, thereby playing a role in one-way transportation, and the inner sealing ring 7 increases the sealing performance between the sealing plate 6 and the inner wall of the upper cover 2;

[0023] The inner wall at the top of the valve body 1 is provided with positioning grooves 10 at equal intervals along the circumferential direction, and a threaded hole 11 is provided at the top of the valve body 1 at a position on one side of the positioning groove 10. The edge of the bottom end of the upper cover 2 is fixedly provided with positioning protrusions 12 at equal intervals along the circumferential direction. The length and width of the positioning protrusions 12 are the same as the length and width of the positioning groove 10. The positioning protrusions 12 are movably embedded in the interior of the positioning groove 10. The edge of the bottom of the valve body 1 is provided with mounting bolts 13 at equal intervals along the circumferential direction. The bottom of the mounting bolts 13 extends to the interior of the threaded hole 11. The top of the valve body 1 and the upper cover 2 are fixedly provided with positioning protrusions 12 at equal intervals along the circumferential direction. The bottoms are fixedly connected by mounting bolts 13, and the position of the upper cover 2 is positioned by the cooperation of the positioning grooves 10 and the positioning protrusions 12. When the upper cover 2 and the valve body 1 are assembled and fixed, the positioning protrusions 12 correspond to and engage with the positioning grooves 10 from above to determine and limit the position of the upper cover 2, so that the mounting bolts 13 and the threaded holes 11 can directly correspond to each other, which provides great convenience for tightening the mounting bolts 13 without manual alignment, and the mounting bolts 13 have stronger fixation on the upper cover 2, so that the connection between the upper cover 2 and the valve body 1 is stronger.

[0024] The working principle and use process of the utility model are as follows: first, the upper sealing ring 8 and the lower sealing ring 9 are respectively sleeved on the surface wall of the upper cover 2 and the surface wall of the valve body 1, and the extrusion spring 4 is taken and sleeved on the outer side of the guide cylinder 3. The staff sleeves the inner sealing ring 7 on the edge of the top of the sealing pressure plate 6, and the sealing pressure plate 6 is placed on the top of the extrusion spring 4. The lifting rod 5 is movably inserted into the interior of the guide cylinder 3, and then the upper cover 2 is taken and sleeved on the outer side of the sealing pressure plate 6. The edge of the sealing pressure plate 6 and the inner sealing ring 7 are both fitted with the inner wall of the upper cover 2, and the bottom end of the upper cover 2 is inserted into the interior of the valve body 1. The surface wall of the bottom end of the upper cover 2 is fitted with the inner wall of the valve body 1, and the positioning protrusion 12 is movably engaged in the positioning groove 10 to limit the upper cover 2. The threaded hole 11 corresponds to the installation position of the mounting bolt 13. Tighten the mounting bolt 13 to lock and fix the upper cover 2.

[0025] When the one-way valve is installed and used, under pressure, the extrusion spring 4 is compressed or stretched and reset, driving the sealing pressure plate 6 to rise and fall, and the lifting rod 5 and the guide cylinder 3 play a guiding role. The sealing pressure plate 6 is in contact with the inner wall of the upper cover 2 when it moves and is limited at multiple positions, thereby improving the stability of the use of the sealing pressure plate 6 and preventing the sealing pressure plate 6 from tilting or getting stuck. The upper cover 2 and the sealing pressure plate 6 are made of high-pressure resistant metal, which increases the use range of the one-way valve, allowing the one-way valve to be used in a high-pressure environment, reducing the damage to the one-way valve structure caused by the high pressure.

[0026] Finally, it should be noted that the above description is only a preferred example of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A refrigerant one-way valve, comprising a valve body (1), characterized in that: The top of the valve body (1) is provided with an upper cover (2), the middle of the top of the valve body (1) is fixedly provided with a guide cylinder (3), the surface of the guide cylinder (3) is sleeved with an extrusion spring (4), a lifting rod (5) is movably provided inside the guide cylinder (3), the top of the lifting rod (5) is fixedly connected with a sealing pressure plate (6), the top edge of the sealing pressure plate (6) is sleeved with an inner sealing ring (7), the top edge of the upper cover (2) is sleeved with an upper sealing ring (8), and the top edge of the valve body (1) is sleeved with a lower sealing ring (9); The inner wall of the top of the valve body (1) is provided with positioning grooves (10) at equal intervals along the circumferential direction, the top of the valve body (1) is provided with a threaded hole (11) at a position on one side of the positioning groove (10), the edge of the bottom end of the upper cover (2) is fixedly provided with positioning protrusions (12) at equal intervals along the circumferential direction, and the edge of the bottom of the valve body (1) is provided with mounting bolts (13) at equal intervals along the circumferential direction.

2. A refrigerant one-way valve according to claim 1, characterized in that: The top and bottom ends of the extrusion spring (4) are respectively connected to the top of the sealing pressure plate (6) and the top of the valve body (1), and the surface wall of the lifting rod (5) is tightly attached to the inner wall of the guide cylinder (3).

3. A refrigerant one-way valve according to claim 1, characterized in that: The edge of the sealing pressure plate (6) is in contact with the inner wall of the upper cover (2), and both the upper cover (2) and the sealing pressure plate (6) are made of high-pressure resistant metal material.

4. A refrigerant one-way valve according to claim 1, characterized in that: The length and width of the positioning protrusion (12) are the same as the length and width of the positioning groove (10), and the positioning protrusion (12) is movably embedded in the interior of the positioning groove (10).

5. A refrigerant one-way valve according to claim 1, characterized in that: The bottom of the mounting bolt (13) extends to the inside of the threaded hole (11), and the top of the valve body (1) and the bottom of the upper cover (2) are fixedly connected by the mounting bolt (13).

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