Shaft coupling type refrigerant cylinder valve

Abstract

The utility model discloses a shaft coupling type refrigerant cylinder valve which comprises a valve body, a gas outlet channel and a switch valve for controlling the gas outlet channel to be opened and closed are arranged in the valve body, a round installation groove communicated with the gas outlet channel through a plurality of pressure relief holes is further formed in the valve body, and a pressure relief valve is arranged in the installation groove. The pressure relief valve comprises a seat plate with a through hole, a valve rod, a pressure spring and a valve core, the pressure spring is slidably sleeved on the valve rod, the valve core is slidably sleeved on the valve rod, a screw hole is formed in the middle of the seat plate, the outer end of the valve rod is in threaded connection with the screw hole, a limiting table is arranged at the end part of the inner end of the valve rod, and an elastic spring applies elastic force to the valve core to enable the valve core to plug the pressure relief hole. A seat plate and a valve rod in the pressure release valve are of a detachable structure, the seat plate extrudes an elastic spring after the seat plate and the valve rod are installed, the threaded detachable structure of the valve rod and the seat plate enables the elastic spring and a valve element to be taken out from the outer end of the valve rod to be replaced, and in addition, during use, the valve rod can be rotated to adjust the threaded connection position so as to adjust the pressure of the spring. When the valve element and the elastic spring go wrong, maintenance can be conducted in an adjusting or replacing mode, and compared with overall replacement, cost is lower.

Description

Technical Field

[0001] The utility model relates to a gas cylinder valve, in particular to a shaft-connected refrigerant gas cylinder valve. Background Art

[0002] The demand for shaft-connected refrigerant gas cylinder valves is increasing day by day, and refrigerant gas cylinder valves are required in more and more places, such as automotive air conditioners, household appliances, and industrial and commercial refrigeration equipment. Therefore, their safety, convenience, and reliability during use have also attracted people's attention.

[0003] The patent with the application number 201821566243.1 discloses a shaft-connected refrigerant gas cylinder valve. One side of its valve body 1 is provided with a pressure relief device 10. An air inlet and outlet channel 11 is provided on the valve body 1, and the pressure relief device 10 has a pressure relief channel 10.1 communicated with the air inlet and outlet channel 11. The pressure relief device 10 includes a second sealing gasket 101, a safety valve seat 102, a pressure relief spring 103, and a spring seat 104 which are arranged in the pressure relief channel 10.1 from inside to outside in sequence. A display piece 105 is arranged outside the spring seat 104. When the gas pressure in the cylinder is too high, a part of the pressure can be released through the pressure relief device 10 to reduce the gas pressure in the cylinder, that is, the safety valve seat 102 is opened for pressure relief to ensure the safe use of the gas cylinder.

[0004] The above patent sets a safety valve on the valve body for pressure relief to ensure safe use. However, its pressure relief valve bears a large pressure for a long time, and the spring inside it is prone to a decrease in elasticity, and the valve core is also prone to wear and damage. The pressure relief device in the above patent lacks a disassembly and adjustment structure. When problems such as a decrease in elasticity or damage to the valve core occur during use, the entire pressure relief valve needs to be replaced, which will increase the use cost. Summary of the Utility Model

[0005] Based on the deficiencies in the prior art that the spring elasticity of the pressure relief valve cannot be adjusted and the valve core is not easy to replace, the utility model provides a shaft-connected refrigerant gas cylinder valve.

[0006] The technical solution adopted by the utility model to solve the above technical problems is as follows:

[0007] The shaft-connected refrigerant gas cylinder valve includes a valve body. An air outlet channel is provided in the valve body, and a switch valve for controlling the opening and closing of the air outlet channel is provided. A cylindrical installation groove communicated with the air outlet channel through a plurality of pressure relief holes is also provided in the valve body. A pressure relief valve is provided in the installation groove. The pressure relief valve includes a seat plate with a through hole, a valve rod, a pressure spring slidably sleeved on the valve rod, and a valve core slidably sleeved on the valve rod. A screw hole is provided in the middle of the seat plate. The outer end of the valve rod is threadedly connected to the screw hole. A limiting table is provided at the inner end of the valve rod. The elastic spring applies an elastic force to the valve core to block the pressure relief holes.

[0008] Preferably, the seat plate is of a circular structure and is threadedly connected to the installation groove.

[0009] Preferably, a plurality of pressure relief holes are evenly distributed in a circular array. The valve core is of an annular structure, and after it moves inward, it tightly presses and seals the orifices of the pressure relief holes at the same time.

[0010] Preferably, a limiting platform for limiting the valve core is provided at the inner end of the valve stem. The limiting platform is used to limit the valve core to prevent it from falling off.

[0011] Preferably, a circular groove is provided at the inner end of the valve core, and the limiting platform extends into the circular groove. The groove is used to accommodate the limiting platform to prevent the limiting platform from affecting the plugging of the valve core.

[0012] Preferably, a limiting groove is provided at the bottom of the installation groove. The inner end of the limiting platform extends out of the circular groove and extends into the limiting groove, and the side wall of the limiting platform fits with the side wall of the limiting groove to form a limit. By providing the cooperation of the limiting groove and the limiting platform to limit the valve stem, the valve stem is prevented from tilting.

[0013] Preferably, the valve body includes a vertical part and a horizontal part. The air outlet channel is located at the lower side position of the vertical part and inside the horizontal part, and the on-off valve is located at the upper side position of the vertical part.

[0014] Preferably, the bottom of the vertical part has a threaded connector. An annular step is provided at the air outlet channel inside the threaded connector, and a conical hole for cooperating with the on-off valve to realize opening and closing is provided in the middle of the annular step.

[0015] Preferably, the valve body is also provided with a horizontal extension part, and the installation groove is located inside the extension part.

[0016] Preferably, the extension part and the horizontal part are respectively located on the left and right sides of the vertical part and are arranged in a vertical dislocation.

[0017] Compared with the prior art, the advantages of the present utility model are as follows: In this application, the seat plate and the valve stem in the pressure relief valve are of a detachable structure. After the two are installed, the seat plate presses the elastic spring, and the elastic spring applies pressure to the valve core slidably arranged on the valve stem to seal the pressure relief hole. The threaded detachable structure of the valve stem and the seat plate not only enables the elastic spring and the valve core to be taken out from the outer end of the valve stem for replacement, but also can adjust the threaded connection position by rotating the valve stem during use to adjust the spring pressure. When problems occur with the valve core and the elastic spring, they can be repaired by adjustment or replacement. Compared with overall replacement, the cost is lower. Description of the Drawings

[0018] The present utility model will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are only drawn for the purpose of explaining the preferred embodiments and should not be construed as limiting the scope of the present utility model. In addition, unless otherwise specified, the drawings only schematically show the composition or structure of the described object and may include exaggerated displays, and the drawings are not necessarily drawn to scale.

[0019] Figure 1 is the front view of this application;

[0020] Figure 2 is the perspective view of this application;

[0021] Figure 3 is the exploded view of this application;

[0022] Figure 4 is the exploded view of this application;

[0023] Figure 5 is the sectional view of this application;

[0024] In the figure: 10, valve body; 101, vertical part; 102, horizontal part; 103, extension part; 1031, installation groove; 1032, limiting groove; 104, air outlet channel; 105, pressure relief hole; 106, annular step; 20, switch valve; 30, pressure relief valve; 301, seat plate; 3011, through hole; 3012, screw hole; 302, valve rod; 303, elastic spring; 304, valve core; 305, limiting platform. Specific Embodiments

[0025] The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are only descriptive and exemplary and should not be construed as limiting the protection scope of the present utility model.

[0026] It should be noted that: Similar reference numerals represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it may not be further defined and explained in subsequent drawings.

[0027] Embodiment 1

[0028] This embodiment mainly elaborates on the title of the shaft-connected refrigerant gas cylinder valve, specifically as follows:

[0029] Shaft-connected refrigerant gas cylinder valve, referring to the attached Figures 1-5, including a valve body 10, an air outlet channel 104 is provided inside the valve body 10, and a switching valve 20 for controlling the opening and closing of the air outlet channel 104 is provided. A cylindrical mounting groove 1031 communicating with the air outlet channel 104 through a plurality of pressure relief holes 105 is also provided inside the valve body 10. A pressure relief valve 30 is provided in the mounting groove 1031. The pressure relief valve 30 includes a seat plate 301 with a through hole 3011, a valve stem 302, a pressure spring 303 slidably sleeved on the valve stem 302, and a valve core 304 slidably sleeved on the valve stem 302. A screw hole 3012 is provided in the middle of the seat plate 301. The outer end of the valve stem 302 is threadedly connected to the screw hole 3012, and a square opening for screwing is provided at the outer end of the valve stem 302. A limiting platform 305 is provided at the inner end of the valve stem 302. The elastic spring 303 exerts an elastic force on the valve core 304 to block the pressure relief hole 105 with the valve core 304. In this solution, the seat plate 301 and the valve stem 302 in the pressure relief valve 30 are detachable structures. After the two are installed, the seat plate 301 presses the elastic spring 303. The elastic spring 303 exerts a pressure on the valve core 304 slidably arranged on the valve stem 302 to block the pressure relief hole 105. The threaded detachable structure of the valve stem 302 and the seat plate 301 not only enables the elastic spring 303 and the valve core 304 to be taken out from the outer end of the valve stem 302 for replacement, but also can adjust the threaded connection position by rotating the valve stem 302 during use to adjust the pressure of the spring 303. When problems occur with the valve core 304 and the elastic spring 303, maintenance can be carried out by adjusting or replacing, which has a lower cost compared to overall replacement.

[0030] As Figures 3-4 shown, the seat plate 301 is a circular structure and is threadedly connected to the mounting groove 1031. This mounting structure can adjust the mounting depth, and the seat plate 301 can also be disassembled.

[0031] As Figure 5 shown, a plurality of pressure relief holes 105 are evenly distributed in a circular array. The valve core 304 is an annular structure, and after it moves inward, it simultaneously presses and seals the orifices of each pressure relief hole 105.

[0032] As Figures 3-4 shown, a limiting platform 305 for limiting the valve core 304 is provided at the inner end of the valve stem 302. The limiting platform 305 is used to limit the valve core 304 to prevent it from falling off.

[0033] As Figure 5 shown, a circular groove is provided at the inner end of the valve core 304, and the limiting platform 305 extends into the circular groove. The circular groove is used to accommodate the limiting platform 305 to prevent the limiting platform 305 from affecting the blocking of the valve core 304.

[0034] As Figure 5As shown, a limiting groove 1032 is provided at the bottom of the installation groove 1031. The inner end of the limiting platform 305 extends out of the circular groove and extends into the limiting groove 1032. The side wall of the limiting platform 305 is attached to the side wall of the limiting groove 1032 to form a limit. By providing the cooperation of the limiting groove 1032 and the limiting platform 305 to limit the valve stem 302, the valve stem 302 is prevented from tilting.

[0035] As Figure 1 shown, the valve body 10 includes a vertical portion 101 and a horizontal portion 102. The air outlet channel 104 is located at the lower side position of the vertical portion 101 and inside the horizontal portion 102. The on-off valve 20 is located at the upper side position of the vertical portion 101.

[0036] As Figure 1 shown, the bottom of the vertical portion 101 has a threaded connection head. An annular step 106 is provided at the air outlet channel 104 inside the threaded connection head. A conical hole for cooperating with the on-off valve 20 to achieve opening and closing is provided in the middle of the annular step 106.

[0037] As Figure 1 shown, the valve body 10 is further provided with a horizontal extension portion 103. The installation groove 1031 is located inside the extension portion 103.

[0038] As Figure 1 shown, the extension portion 103 and the horizontal portion 102 are respectively located on the left and right sides of the vertical portion 101 and are arranged in a vertical offset manner.

[0039] The above has introduced in detail the title of the shaft-connected refrigerant gas cylinder valve provided by the present utility model. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the present utility model and its core idea. It should be pointed out that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. The shaft-connected refrigerant gas cylinder valve, including a valve body, is provided with an air outlet channel in the valve body and a switching valve for controlling the opening and closing of the air outlet channel, characterized in that, The valve body further has a cylindrical mounting groove communicated with the air outlet passage through a plurality of pressure relief holes. A pressure relief valve is provided in the mounting groove. The pressure relief valve includes a seat plate with a through hole, a valve stem, a pressure spring slidably sleeved on the valve stem, and a valve core slidably sleeved on the valve stem. A screw hole is provided in the middle of the seat plate. The outer end of the valve stem is threadedly connected to the screw hole. A limiting platform is provided at the inner end of the valve stem. The elastic spring applies an elastic force to the valve core to block the pressure relief holes with the valve core.

2. The shaft-connected refrigerant gas cylinder valve according to claim 1, characterized in that, The seat plate is of a circular structure and is threadedly connected to the mounting groove.

3. The shaft-connected refrigerant gas cylinder valve according to claim 1, wherein The plurality of pressure relief holes are evenly distributed in a circular array.

4. The shaft-connected refrigerant cylinder valve according to claim 1, characterized in that, A limiting platform for limiting the valve core is provided at the inner end of the valve stem.

5. The shaft-connected refrigerant gas cylinder valve according to claim 4, wherein, A circular groove is provided at the inner end of the valve core, and the limiting platform extends into the circular groove.

6. The shaft-coupled refrigerant gas cylinder valve according to claim 5, characterized in that: A limiting groove is provided at the bottom of the mounting groove. The inner end of the limiting platform extends out of the circular groove and into the limiting groove. The side wall of the limiting platform fits with the side wall of the limiting groove to form a limit.

7. The shaft-coupled refrigerant gas cylinder valve according to claim 1, characterized in that: The valve body includes a vertical part and a horizontal part. The air outlet passage is located at the lower side position of the vertical part and inside the horizontal part. The on-off valve is located at the upper side position of the vertical part.

8. The shaft-coupled refrigerant gas cylinder valve according to claim 7, characterized in that: The bottom of the vertical part has a threaded connection head. An annular step is provided at the air outlet passage inside the threaded connection head. A conical hole for cooperating with the on-off valve to achieve opening and closing is provided in the middle of the annular step.

9. The shaft-connected refrigerant gas cylinder valve according to claim 7, characterized in that: The valve body further has a horizontal extension part, and the mounting groove is located in the extension part.

10. The shaft-connected refrigerant gas cylinder valve according to claim 9, wherein: The extension part and the horizontal part are respectively located on the left and right sides of the vertical part and are arranged in a vertical dislocation.

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