Liquefied petroleum gas cylinder valve

Abstract

The utility model discloses a liquefied petroleum gas bottle valve, including valve body, the upper and lower ends of valve body are gas inlet end and gas outlet end respectively, the position of the middle part in valve body is screwed into having the spring seat of upper and lower through the mode of thread connection, and the thread connection place of spring seat and valve body inner wall is coated with glue, a steel ball and a spring are loaded in valve body, the steel ball is pressed on the upper end of spring, and a sealing washer for contacting the outer wall of steel ball is installed between the lower end of spring seat and valve body inner wall, the bottom of valve body is fixed with the bottom plate of adjustable height, and the lower end of spring is pressed on the upper end of bottom plate. The thread connection place of spring seat and valve body is coated with glue, forms the double protection of mechanical fixation and chemical fixation, plays the role of anti -disassembly, the bottom plate is screwed into the thread hole in valve body, and the depth of screwing in can be controlled to the rotation bottom plate, thereby adjusting the spring compression amount, the convex ring on the bottom plate forms the annular clamping groove with valve body inner wall, and the lower end of spring is firmly clamped into it, and the spring is not easy to come off.

Description

Technical Field

[0001] This utility model relates to an industrial gas cylinder valve, specifically a liquefied petroleum gas cylinder valve. Background Technology

[0002] In existing LPG cylinder valve technology, the spring seat at the inlet end is generally fixed using a threaded connection. However, this connection method has a significant drawback: it lacks effective anti-disassembly functionality. In actual use, unintended disassembly operations may cause safety hazards. Furthermore, existing cylinder valves rely on the interaction of a spring and a steel ball to open and close. A sealing gasket is installed between the lower end of the spring seat and the inner wall of the valve body to contact the outer wall of the steel ball. When the steel ball contacts the sealing gasket, the internal passage of the valve body is closed; when the steel ball separates from the sealing gasket, the internal passage is open. However, once installed, the spring's elasticity cannot be adjusted. This makes it difficult to flexibly adapt to different usage scenarios and pressure requirements, thus affecting the performance and effectiveness of the cylinder valve. In addition, the outlet end of the valve body has a through-hole, with the lower end of the spring positioned precisely at this hole. This structure makes the spring prone to loosening from this hole during prolonged use or under external force, disrupting the normal operation of the cylinder valve. Utility Model Content

[0003] In view of the above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a liquefied petroleum gas cylinder valve.

[0004] The technical solution of this utility model is: a liquefied petroleum gas cylinder valve, including a valve body, with an inlet and an outlet at the upper and lower ends of the valve body, respectively. A spring seat that runs vertically through the valve body is screwed into the middle of the valve body via a threaded connection, and the threaded connection between the spring seat and the inner wall of the valve body is coated with glue. A steel ball and a spring are installed inside the valve body, with the steel ball pressing on the upper end of the spring. A sealing gasket for contacting the outer wall of the steel ball is installed between the lower end of the spring seat and the inner wall of the valve body. A height-adjustable base plate is fixed at the bottom of the valve body, with the lower end of the spring pressing on the upper end of the base plate.

[0005] Furthermore, the lower end of the valve body has an internal threaded hole, and the base plate is screwed into the internal threaded hole through a threaded connection.

[0006] Furthermore, the bottom of the valve body is fixed with a height-adjustable base plate, which means that after the base plate is screwed into the internal threaded hole at the lower end of the valve body through a threaded connection, the screwing depth can be changed by rotating the base plate, thereby adjusting the vertical position of the base plate relative to the valve body and realizing the height adjustment function.

[0007] Furthermore, the upper end of the base plate has a protruding ring, and an annular groove is formed between the protruding ring and the inner wall of the lower end of the valve body, into which the lower end of the spring is inserted.

[0008] Furthermore, the air inlet end has an air inlet, the air outlet end has an air outlet, and the spring seat has a vertically connected channel that communicates with the air inlet and the air outlet. When the outer wall of the steel ball contacts the inner wall of the sealing gasket, the channel is closed.

[0009] The advantages of using the liquefied petroleum gas cylinder valve provided by this utility model are:

[0010] The threaded connection between the spring seat and the valve body is coated with glue, forming a dual protection of mechanical and chemical fixation, which effectively prevents unintended disassembly and thus serves as an anti-disassembly function.

[0011] The base plate is screwed into the threaded hole in the valve body through a thread. Rotating the base plate can control its screwing depth, thereby adjusting the spring compression. For example, in high-pressure scenarios, the spring preload can be increased to ensure sealing reliability, while in low-pressure scenarios, the spring force can be reduced to decrease opening resistance.

[0012] The raised ring on the base plate forms an annular groove with the inner wall of the valve body, and the lower end of the spring is firmly locked into it, making the spring less likely to loosen. Attached Figure Description

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

[0014] Figure 2 This is a schematic diagram of one usage state of the present invention.

[0015] As shown in the figure: 1—valve body, 11—inlet end, 111—inlet port, 12—outlet end, 121—outlet port, 13—internal threaded hole, 2—spring seat, 21—channel, 3—steel ball, 4—spring, 5—sealing gasket, 6—base plate, 61—convex ring, 7—slot. Detailed Implementation

[0016] To provide a more intuitive and complete understanding of the technical solution of this utility model, the following non-limiting features are described in conjunction with the accompanying drawings:

[0017] like Figure 1 , Figure 2 As shown, the liquefied petroleum gas cylinder valve includes a valve body 1, with an inlet end 11 and an outlet end 12 at the upper and lower ends, respectively. A spring seat 2, which runs vertically through the valve body 1, is screwed into the middle of the valve body 1 via a threaded connection, and the threaded connection between the spring seat 2 and the inner wall of the valve body 1 is coated with glue. A steel ball 3 and a spring 44 are installed inside the valve body 1. The steel ball 3 presses on the upper end of the spring 44. A sealing gasket 5 for contacting the outer wall of the steel ball 3 is installed between the lower end of the spring seat 2 and the inner wall of the valve body 1. A height-adjustable base plate 6 is fixed at the bottom of the valve body 1, and the lower end of the spring 44 presses on the upper end of the base plate 6.

[0018] like Figure 1 , Figure 2As shown, the lower end of the valve body 1 has an internal threaded hole 13, and the base plate 6 is screwed into the internal threaded hole 13 by means of a threaded connection. The bottom of the valve body 1 is fixed with a height-adjustable base plate 6, which means that after the base plate 6 is screwed into the internal threaded hole 13 at the lower end of the valve body 1 by means of a threaded connection, the screwing depth of the base plate 6 can be changed by rotating the base plate 6, thereby adjusting the vertical position of the base plate 6 relative to the valve body 1, so as to realize the height adjustment function.

[0019] like Figure 1 As shown, the upper end of the base plate 6 has a protruding ring 61, and an annular groove 7 is formed between the protruding ring 61 and the inner wall of the lower end of the valve body 1. The lower end of the spring 44 is inserted into the groove 7. The lower end of the spring 44 is firmly inserted into the groove 7, and the protruding ring 61 will block the lower end of the spring 44, so the spring 44 is not easy to loosen.

[0020] like Figure 1 As shown, the air inlet 11 has an air inlet 111, and the air outlet 12 has an air outlet 121. The spring seat 2 has a vertically penetrating channel 21, which connects to the air inlet 111 and the air outlet 121. When the outer wall of the steel ball 3 contacts the inner wall of the sealing gasket 5, the channel 21 closes. When the steel ball 3 is pushed downwards, the steel ball 3 separates from the sealing gasket 5, and the channel 21 opens.

[0021] The liquefied petroleum gas cylinder valve provided by this utility model has an adhesive coating at the threaded connection between the spring seat 2 and the valve body 1, forming a dual protection of mechanical and chemical fixation, effectively preventing unintended disassembly, i.e., providing an anti-disassembly function. The base plate 6 is screwed into the internal threaded hole 13 of the valve body 1. Rotating the base plate 6 controls its screwing depth, thereby adjusting the compression of the spring 44. For example, in high-pressure scenarios, the preload of the spring 44 is increased to ensure sealing reliability, while in low-pressure scenarios, the spring force is reduced to decrease opening resistance.

[0022] Of course, the above are only preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any simple modifications and equivalent structural changes made based on the contents of the present utility model specification and drawings should also be included within the patent protection scope of the present utility model.

Claims

1. A liquefied petroleum gas cylinder valve, comprising a valve body, with an inlet and an outlet at the upper and lower ends of the valve body, respectively, characterized in that: A spring seat that runs vertically through the valve body is screwed into the middle of the valve body via a threaded connection, and the threaded connection between the spring seat and the inner wall of the valve body is coated with glue; a steel ball and a spring are installed inside the valve body, with the steel ball pressing on the upper end of the spring, and a sealing gasket for contacting the outer wall of the steel ball is installed between the lower end of the spring seat and the inner wall of the valve body; a height-adjustable base plate is fixed at the bottom of the valve body, and the lower end of the spring presses on the upper end of the base plate.

2. The liquefied petroleum gas cylinder valve according to claim 1, characterized in that: The lower end of the valve body has an internal threaded hole, and the base plate is screwed into the internal threaded hole by a threaded connection.

3. The liquefied petroleum gas cylinder valve according to claim 2, characterized in that: The valve body has a height-adjustable base plate fixed at the bottom. This means that after the base plate is screwed into the internal threaded hole at the lower end of the valve body through a threaded connection, the screwing depth can be changed by rotating the base plate, thereby adjusting the vertical position of the base plate relative to the valve body and realizing the height adjustment function.

4. The liquefied petroleum gas cylinder valve according to claim 1, characterized in that: The upper end of the base plate has a convex ring, and an annular groove is formed between the convex ring and the inner wall of the lower end of the valve body. The lower end of the spring is inserted into the groove.

5. The liquefied petroleum gas cylinder valve according to claim 1, characterized in that: The air inlet has an air inlet, and the air outlet has an air outlet. The spring seat has a channel that runs vertically through the air inlet and the air outlet. When the outer wall of the steel ball contacts the inner wall of the sealing gasket, the channel is closed.

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