Light touch type low-pressure valve

Abstract

The utility model discloses a light touch type low-pressure valve, which relates to the technical field of low-pressure valves and comprises a low-pressure valve body, one end of the low-pressure valve body is provided with a liquid inlet, the outer end of the liquid inlet is provided with a sealing gasket, the outer end of the sealing gasket is provided with an outer sleeve, and the inner end of the low-pressure valve body is provided with a valve cavity. Through the arrangement of the low-pressure valve body, the valve rod, the reset rod, the hollow valve plug and the rod stopping block, when a water body is heated and expanded, liquid in a pipeline extrudes the valve rod upwards in the valve cavity, the hollow valve plug is separated from a liquid passing opening in the inner end of the low-pressure valve body, and the water body enters the valve cavity and completes expanded water circulation through an upper liquid channel; when the valve rod reaches the maximum limit, the top end of the rod stopping block clamps the position of the valve rod through the acting force of the ejector block spring, so that the constant-speed heat exchange circulation effect is achieved, the rod stopping block is slightly pulled open to be not in contact with the valve rod, the valve rod and the hollow valve plug can be immediately reset through the acting force of the reset rod, and the portable reset effect of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of low - pressure valves, in particular to a touch - type low - pressure valve. Background Technique

[0002] The low - pressure valve of an air conditioner plays a key role in the refrigeration process. It controls the refrigerant to enter the indoor unit and evaporate in the indoor unit, absorbing the heat of the indoor air. Subsequently, the refrigerant is transported to the outdoor unit for heat exchange, transferring the heat to the outdoor air. In this process, the low - pressure valve is not only responsible for the flow of the refrigerant but also undertakes the important task of regulating the refrigerant pressure, ensuring that the refrigerant pressure remains within an appropriate range, thus guaranteeing the normal operation of the air - conditioning equipment. Therefore, a touch - type low - pressure valve is needed.

[0003] When the existing touch - type low - pressure valve is in operation, it cannot effectively improve the portability of the device reset, at the same time, it cannot effectively complete the effect of accelerating the circulating heat exchange of water, and it cannot improve the effect of complete sealing when the device is working. For this reason, a touch - type low - pressure valve is urgently needed. Content of the Utility Model

[0004] Based on this, the purpose of the utility model is to provide a touch - type low - pressure valve to solve the problems that when the existing touch - type low - pressure valve is in use, it cannot effectively improve the portability of the device reset, at the same time, it cannot effectively complete the effect of accelerating the circulating heat exchange of water, and it cannot improve the effect of complete sealing when the device is working.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a touch - type low - pressure valve, including a low - pressure valve body. One end of the low - pressure valve body is provided with a liquid inlet, an outer end of the liquid inlet is provided with a sealing gasket, an outer end of the sealing gasket is provided with an outer sleeve. An inner end of the low - pressure valve body is provided with a valve cavity. One end of the valve cavity is provided with a valve rod, one end of the valve rod is provided with a sealing ring, a lower end of the valve rod is provided with a leak - proof air - bag ring, one end of the valve rod is provided with a reset rod, and one end of the valve rod is provided with a hollow valve plug.

[0006] One upper end of one end of the low - pressure valve body is provided with a sliding groove, an inner end of the sliding groove is provided with a top - block spring, and one end of the top - block spring is provided with a blocking rod block.

[0007] One end of the low - pressure valve body is provided with a liquid outlet. An inner end of the liquid outlet is provided with a limiting groove, one end of the limiting groove is provided with an inner plug, one end of the inner plug is provided with a top - plug spring, and an inner end of the low - pressure valve body is provided with an upper liquid channel.

[0008] Preferably, the sealing gasket is movably connected to the liquid inlet, and the outer sleeve forms a rotating structure with the liquid inlet through the low - pressure valve body.

[0009] Preferably, the valve stem and the low-pressure valve body form a telescopic structure through a reset rod, and the hollow valve plug is snap-connected to the low-pressure valve body through the valve stem.

[0010] Preferably, the blocking rod block and the low-pressure valve body form a sliding structure through a chute, and the blocking rod block is snap-connected to the valve stem through a top block spring.

[0011] Preferably, the built-in plug and the liquid outlet form a telescopic structure through a top plug spring, and the outer diameter of the outer end of the built-in plug is larger than the inner diameter of the inner end of the limit groove.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. Through the low-pressure valve body, reset rod, hollow valve plug, and blocking rod block provided in the present utility model, when the water body expands due to heat, the liquid in the pipeline squeezes the valve stem upward in the valve cavity, and the hollow valve plug disengages from the liquid passage opening at the inner end of the low-pressure valve body, enabling the water body to enter the valve cavity and complete the expanded water circulation through the upper liquid passage. The valve stem moves upward in the valve cavity according to the water body expansion coefficient and gradually pushes the blocking rod block away from the valve stem in the chute. When the valve stem reaches the maximum limit, the top of the blocking rod block is stuck at the position of the valve stem by the acting force of the top block spring, thereby achieving the effect of a constant-speed heat exchange cycle. Gently pulling the blocking rod block so that it does not contact the valve stem, the valve stem and the hollow valve plug can be immediately reset by the acting force of the reset rod, improving the portability of the device reset;

[0014] 2. Through the low-pressure valve body and the built-in plug provided in the present utility model, when the air-conditioning heat exchange liquid is injected into the low-pressure valve body through the liquid inlet, the liquid squeezes the built-in plug until it reaches the liquid outlet, achieving the effect of accelerating the circulating heat exchange of the water body;

[0015] 3. Through the low-pressure valve body, sealing gasket, outer sleeve, sealing ring, and anti-leakage airbag ring provided in the present utility model, the low-pressure valve body is threadedly connected to the pipeline through the liquid inlet and the liquid outlet, and then the outer sleeve is sleeved on the outer end of the contact pipe head and screwed tightly to press the sealing gasket. The valve stem moves upward in the valve cavity according to the water body expansion coefficient. During this process, a double-layer anti-leakage airbag ring is provided at the contact position between the valve stem and the valve cavity to prevent water from entering the upper end of the valve cavity and affecting the valve sealing effect. Also, a sealing ring is provided at the contact position between the upper end of the valve stem and the low-pressure valve body, improving the completely sealed effect during the operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the front elevation sectional view of the present utility model;

[0017] Figure 2 is the structural schematic diagram of the present utility model seen from above;

[0018] Figure 3 is the sectional structural schematic diagram of the present utility model;

[0019] Figure 4 This is a schematic structural diagram of the split of the utility model.

[0020] In the figure: 1. Low-pressure valve body; 2. Liquid inlet; 3. Sealing gasket; 4. Outer sleeve; 5. Valve cavity; 6. Valve rod; 7. Sealing ring; 8. Leak-proof airbag ring; 9. Reset rod; 10. Hollow valve plug; 11. Chute; 12. Top block spring; 13. Stop rod block; 14. Liquid outlet; 15. Limit groove; 16. Inner plug; 17. Top plug spring; 18. Upper liquid channel. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0022] Next, the embodiments of the present utility model will be described according to the overall structure of the present utility model.

[0023] Please refer to Figures 1-4 , a touch-type low-pressure valve, including a low-pressure valve body 1, a liquid inlet 2 is installed at one end of the low-pressure valve body 1, a sealing gasket 3 is installed at the outer end of the liquid inlet 2, an outer sleeve 4 is installed at the outer end of the sealing gasket 3, a valve cavity 5 is opened at the inner end of the low-pressure valve body 1, a valve rod 6 is installed at one end of the valve cavity 5, a sealing ring 7 is installed at one end of the valve rod 6, a leak-proof airbag ring 8 is installed at the lower end of the valve rod 6, a reset rod 9 is installed at one end of the valve rod 6, a hollow valve plug 10 is installed at one end of the valve rod 6, the sealing gasket 3 is movably connected to the liquid inlet 2, and the outer sleeve 4 and the liquid inlet 2 form a rotating structure through the low-pressure valve body 1, the valve rod 6 and the low-pressure valve body 1 form a telescopic structure through the reset rod 9, and the hollow valve plug 10 is snap-connected to the low-pressure valve body 1 through the valve rod 6. The low-pressure valve body 1 is threadedly connected to the pipeline through the liquid inlet 2 and the liquid outlet 14, and then the outer sleeve 4 is sleeved on the outer end of the contact pipe head and the threaded knob is tightened to press the sealing gasket 3. The valve rod 6 moves upward in the valve cavity 5 according to the water expansion coefficient. During this process, a double-layer leak-proof airbag ring 8 is arranged at the contact position between the valve rod 6 and the valve cavity 5 to prevent water from entering the upper end of the valve cavity 5 and affecting the sealing effect of the valve. And a sealing ring 7 is also arranged at the contact position between the upper end of the valve rod 6 and the low-pressure valve body 1, improving the completely sealed effect during the operation of the device.

[0024] Please refer to Figures 1-4, A touch-type low-pressure valve. At the upper end of one end of the low-pressure valve body 1, a chute 11 is provided. Inside the chute 11, a top block spring 12 is installed. At one end of the top block spring 12, a blocking rod block 13 is installed. The blocking rod block 13 forms a sliding structure with the low-pressure valve body 1 through the chute 11, and the blocking rod block 13 is snap-connected to the valve rod 6 through the top block spring 12. When the water body expands due to heat, the liquid in the pipeline squeezes the valve rod 6 upward in the valve cavity 5, and the hollow valve plug 10 disengages from the liquid passage opening at the inner end of the low-pressure valve body 1, allowing the water body to enter the valve cavity 5 and complete the expanded water circulation through the upper liquid passage 18. The valve rod 6 moves upward in the valve cavity 5 according to the water body expansion coefficient and gradually pushes the blocking rod block 13 away from the valve rod 6 in the chute 11. When the valve rod 6 reaches the maximum limit, the top of the blocking rod block 13 is stuck at the position of the valve rod 6 by the acting force of the top block spring 12, so as to achieve the effect of a constant-speed heat exchange cycle. Gently pull the blocking rod block 13 so that it does not contact the valve rod 6, and the valve rod 6 and the hollow valve plug 10 can be immediately reset by the acting force of the reset rod 9, improving the portability of the device reset.

[0025] Please refer to Figures 1-4 , A touch-type low-pressure valve. At one end of the low-pressure valve body 1, a liquid outlet 14 is installed. Inside the liquid outlet 14, a limit groove 15 is provided. At one end of the limit groove 15, an internal plug 16 is installed. At one end of the internal plug 16, a top plug spring 17 is installed. Inside the low-pressure valve body 1, an upper liquid passage 18 is provided. The internal plug 16 forms a telescopic structure with the liquid outlet 14 through the top plug spring 17, and the outer diameter of the outer end of the internal plug 16 is larger than the inner diameter of the inner end of the limit groove 15. When the air-conditioning heat exchange liquid is injected into the low-pressure valve body 1 through the liquid inlet 2, the liquid squeezes the internal plug 16 until the liquid outlet 14 to complete the extrusion and accelerate the circulation of the water body.

[0026] Working principle: When in use, first thread-connect the low-pressure valve body 1 to the pipeline through the liquid inlet 2 and the liquid outlet 14, and then sleeved the outer sleeve 4 on the outer end of the contact pipe head and thread the knob to tightly press the sealing gasket 3 to improve the sealing effect of the installation. When the air-conditioning heat exchange liquid is injected into the low-pressure valve body 1 through the liquid inlet 2, the liquid squeezes the built-in plug 16 until the liquid outlet 14 to complete the extrusion and acceleration of the water body circulation. When the water body expands due to heat, the liquid in the pipeline squeezes the valve stem 6 upward in the valve cavity 5, and the hollow valve plug 10 disengages from the liquid passage at the inner end of the low-pressure valve body 1, allowing the water body to enter the valve cavity 5 and complete the expanded water circulation through the upper liquid passage 18. The valve stem 6 moves upward in the valve cavity 5 according to the water body expansion coefficient. During this process, a double-layer leak-proof airbag ring 8 is provided at the contact position between the valve stem 6 and the valve cavity 5 to prevent water from entering the upper end of the valve cavity 5 and affecting the sealing effect of the valve. And a sealing ring 7 is also provided at the contact position between the upper end of the valve stem 6 and the low-pressure valve body 1 to improve the completely sealed effect during the operation of the device. At the same time, as the valve stem 6 moves upward, the blocking rod block 13 is gradually pushed away from the valve stem 6 in the sliding groove 11. When the valve stem 6 reaches the maximum limit, the top of the blocking rod block 13 is stuck at the position of the valve stem 6 by the acting force of the top block spring 12 to achieve the effect of constant-speed heat exchange cycle. Gently pull the blocking rod block 13 so that it does not contact the valve stem 6, and the valve stem 6 and the hollow valve plug 10 can be immediately reset by the acting force of the reset rod 9 to improve the portability of the device reset. In this way, the use process of the device is completed. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0027] The orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of simplifying the description of the present invention and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the protection scope of the present invention.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A light-touch low-pressure valve, comprising a low-pressure valve body (1), characterized in that: A liquid inlet (2) is installed at one end of the low-pressure valve body (1), a sealing gasket (3) is installed at the outer end of the liquid inlet (2), an outer sleeve (4) is installed at the outer end of the sealing gasket (3), a valve cavity (5) is opened at the inner end of the low-pressure valve body (1), a valve stem (6) is installed at one end of the valve cavity (5), a sealing ring (7) is installed at one end of the valve stem (6), a leak-proof airbag ring (8) is installed at the lower end of the valve stem (6), a reset rod (9) is installed at one end of the valve stem (6), and a hollow valve plug (10) is installed at one end of the valve stem (6); A slide groove (11) is provided at the upper end of one end of the low-pressure valve body (1), a top block spring (12) is installed at the inner end of the slide groove (11), and a stop rod block (13) is installed at one end of the top block spring (12); A liquid outlet (14) is installed at one end of the low-pressure valve body (1), a limiting groove (15) is provided at the inner end of the liquid outlet (14), a built-in plug (16) is installed at one end of the limiting groove (15), a top plug spring (17) is installed at one end of the built-in plug (16), and an upper liquid channel (18) is provided at the inner end of the low-pressure valve body (1).

2. A light-touch low-pressure valve according to claim 1, characterized in that: The sealing gasket (3) is movably connected to the liquid inlet (2), and the outer sleeve (4) forms a rotating structure through the low-pressure valve body (1) and the liquid inlet (2).

3. A light-touch low-pressure valve according to claim 1, characterized in that: The valve stem (6) forms a telescopic structure with the low-pressure valve body (1) through the reset rod (9), and the hollow valve plug (10) is snap-connected with the low-pressure valve body (1) through the valve stem (6).

4. A light-touch low-pressure valve according to claim 1, characterized in that: The blocking rod block (13) forms a sliding structure with the low-pressure valve body (1) via a sliding groove (11), and the blocking rod block (13) is engaged and connected with the valve stem (6) via a top block spring (12).

5. A light-touch low-pressure valve according to claim 1, characterized in that: The built-in plug (16) forms a telescopic structure with the liquid outlet (14) via a plug-pushing spring (17), and the outer end diameter of the built-in plug (16) is greater than the inner end diameter of the limiting groove (15).

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