Safety valve for gas production

Abstract

The utility model discloses a safety valve for gas production, which comprises a safety valve body and a valve cover, a gas inlet pipe is fixedly connected to the lower surface of the safety valve body, an exhaust pipe is fixedly connected to the surface of the other end of the safety valve body close to the lower end, and a T-shaped screw is fixedly mounted in the valve cover. A T-shaped screw is arranged in the safety valve body, a vent hole is formed in the T-shaped screw, an I-shaped piston is arranged in the safety valve body, a sealing gasket is fixedly installed on the upper surface of the I-shaped piston, a first spring is installed on the upper surface of the sealing gasket in the safety valve body, and connecting structures are arranged on the upper surface of the safety valve body and the lower surface of the valve cover. According to the safety valve for gas production, when the valve cover needs to be opened to replace the first spring, only the round rod needs to be pressed at the same time, then the valve cover is pulled upwards, the valve cover can be rapidly taken down, and disassembly is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of safety valves, in particular to a safety valve for gas production. Background Art

[0002] During the production process, gas needs to be stored in a pressure vessel. The safety valve in the pressure vessel plays a role of safety protection. When the pressure in the pressure vessel exceeds the preset value, the valve automatically opens to release part of the gas to ensure the safety of the storage tank and its surrounding environment. For example, an oxygen pressure relief safety valve with publication number CN217784314U relates to the technical field of gas safety valves, and improves the problem that the safety valve body and the detachable valve cover are only connected by threads, and are prone to loosening after long-term use. The safety valve comprises a body and an air inlet pipe and an exhaust pipe arranged on the body, a valve cover is arranged on the side of the body away from the air inlet pipe, and a plug rod is fixedly installed on the bottom of the valve cover; a through groove is provided on the outer surface of the body, a first spring is fixedly installed inside the body, a moving block is fixedly installed on one end of the first spring, a limit rod is fixedly penetrated inside the moving block, and a limit groove matching the limit rod is provided inside the plug rod. When the utility model needs to open the valve cover, the user only needs to pull the limit rod, which can drive the moving block to move and squeeze the first spring to contract, and at the same time the limit rod and the limit groove are separated from each other, so that the user can quickly open the valve cover; when the spring needs to be replaced, the two side covers need to be opened first, and then the pull ring is pulled to separate the limit rod and the limit groove from each other, so that the user can quickly open the valve cover, but the pull ring is in the groove on the inner side of the side cover and is very small, so a tool is needed to pull the pull ring, which is relatively troublesome. Utility Model Content

[0003] The main purpose of the utility model is to provide a safety valve for gas production, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A safety valve for gas production comprises a safety valve body and a valve cover, wherein an air inlet pipe is fixedly connected to the lower surface of the safety valve body, an exhaust pipe is fixedly connected to the other end surface of the safety valve body near the lower end, a T-shaped screw is fixedly installed inside the valve cover, a vent hole is opened inside the T-shaped screw, an I-shaped piston is arranged inside the safety valve body, a sealing gasket is fixedly installed on the upper surface of the I-shaped piston, a No. 1 spring is installed on the upper surface of the sealing gasket inside the safety valve body, and a connecting structure is arranged on the upper surface of the safety valve body and the lower surface of the valve cover.

[0006] Preferably, the connecting structure includes a circular rod, a circular groove, a rectangular connecting plate, a rectangular groove, a No. 2 spring, a circular guide rod, an annular groove, an annular connecting block, a circular clamping block, a circular clamping groove, and a circular hole.

[0007] Preferably, an annular groove is provided on the upper surface of the safety valve body, an annular connecting block is fixedly installed on the lower surface of the valve cover, an annular connecting block is slidably installed in the annular groove, and rectangular grooves are provided at both ends of the interior of the safety valve body.

[0008] Preferably, a circular groove is opened at the lower end of one end surface of the rectangular groove, a circular rod is slidably installed in the circular groove, a circular guide rod is fixedly installed in the middle of the two end surfaces of the rectangular groove, and a rectangular connecting plate is slidably installed on the outer surface of the circular guide rod.

[0009] Preferably, a No. 2 spring is sleeved on the other end of the rectangular connecting plate on the outer surface of the circular guide rod, a circular rod is fixedly installed on the lower end of one end surface of the rectangular connecting plate, and a circular hole is opened on the upper end of one end surface of the rectangular groove.

[0010] Preferably, a circular clamping block is fixedly mounted on the upper end of the surface of one end of the rectangular connecting plate, and circular clamping grooves are provided at both ends of the annular connecting block, and circular clamping blocks are clamped in the circular clamping grooves.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] In the utility model, by providing a connection structure, when the valve cover needs to be opened to replace the No. 1 spring, the valve cover can be quickly removed by pressing the circular rods at the same time and then pulling the valve cover upwards, which makes disassembly simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of a safety valve for gas production according to the utility model;

[0014] Figure 2 This is a cross-sectional view of a safety valve for gas production according to the utility model;

[0015] Figure 3 The utility model is a safety valve for gas production Figure 2 Enlarged view of point A in the middle.

[0016] In the figure: 1. safety valve body; 2. air inlet pipe; 201. exhaust pipe; 3. valve cover; 301. T-shaped screw; 302. vent hole; 4. No. 1 spring; 401. sealing gasket; 402. I-shaped piston; 5. connecting structure; 501. round rod; 502. round groove; 503. rectangular connecting plate; 504. rectangular groove; 505. No. 2 spring; 506. round guide rod; 507. annular groove; 508. annular connecting block; 509. round clamping block; 510. round clamping groove; 511. round hole. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0018] like Figure 1-3 As shown, a safety valve for gas production includes a safety valve body 1 and a valve cover 3. The lower surface of the safety valve body 1 is fixedly connected to an air inlet pipe 2, and the other end surface of the safety valve body 1 is fixedly connected to an exhaust pipe 201 near the lower end. A T-shaped screw 301 is fixedly installed inside the valve cover 3, and a vent hole 302 is opened inside the T-shaped screw 301. An I-shaped piston 402 is arranged inside the safety valve body 1, and a sealing gasket 401 is fixedly installed on the upper surface of the I-shaped piston 402. A No. 1 spring 4 is installed on the upper surface of the sealing gasket 401 inside the safety valve body 1, and a connecting structure 5 is arranged on the upper surface of the safety valve body 1 and the lower surface of the valve cover 3;

[0019] The connecting structure 5 includes a circular rod 501, a circular groove 502, a rectangular connecting plate 503, a rectangular groove 504, a No. 2 spring 505, a circular guide rod 506, an annular groove 507, an annular connecting block 508, a circular clamping block 509, a circular clamping groove 510, and a circular hole 511; an annular groove 507 is provided on the upper surface of the safety valve body 1, an annular connecting block 508 is fixedly installed on the lower surface of the valve cover 3, an annular connecting block 508 is slidably installed in the annular groove 507, and rectangular grooves 504 are provided at both ends of the safety valve body 1; a circular groove 502 is provided on the lower end of one end surface of the rectangular groove 504, a circular rod 501 is slidably installed in the circular groove 502, and circular guide rods 506 are fixedly installed in the middle of the two end surfaces of the rectangular groove 504, A rectangular connecting plate 503 is slidably installed on the outer surface of the circular guide rod 506; a No. 2 spring 505 is sleeved on the other end of the rectangular connecting plate 503 on the outer surface of the circular guide rod 506, a circular rod 501 is fixedly installed on the lower end of the surface of one end of the rectangular connecting plate 503, and a circular hole 511 is provided on the upper end of the surface of one end of the rectangular groove 504; a circular clamping block 509 is fixedly installed on the upper end of the surface of one end of the rectangular connecting plate 503, and circular clamping grooves 510 are provided at both ends of the annular connecting block 508, and a circular clamping block 509 is clamped in the circular clamping groove 510. When it is necessary to open the valve cover 3 to replace the No. 1 spring 4, the valve cover 3 can be quickly removed by pressing the circular rod 501 at the same time, and then pulling the valve cover 3 upwards, and the disassembly is simple.

[0020] It should be noted that the utility model is a safety valve for gas production. When it is necessary to open the valve cover 3 to replace the No. 1 spring 4, it is necessary to first press the circular rod 501 at the same time, so that the circular rod 501 drives the rectangular connecting plate 503 to slide toward the middle on the outer surface of the circular guide rod 506, and drives the rectangular connecting plate 503 to squeeze the No. 2 spring 505, and at the same time drives the circular clamping block 509 fixedly installed on the upper end surface of one end of the rectangular connecting plate 503 to disengage from the circular clamping groove 510 opened at both ends of the annular connecting block 508 and enter into the circular hole 511, and then pull the valve cover 3 upwards to make the annular connecting block 508 fixedly installed on the lower surface of the valve cover 3 disengage from the annular groove 507 opened on the upper surface of the safety valve body 1, so that the valve cover 3 can be quickly removed, and the disassembly is simple.

[0021] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A safety valve for gas production, characterized in that: The invention comprises a safety valve body (1) and a valve cover (3), wherein the lower surface of the safety valve body (1) is fixedly connected to an air inlet pipe (2), the other end surface of the safety valve body (1) is fixedly connected to an exhaust pipe (201) near the lower end, a T-shaped screw (301) is fixedly installed inside the valve cover (3), a vent hole (302) is provided inside the T-shaped screw (301), an I-shaped piston (402) is arranged inside the safety valve body (1), a sealing gasket (401) is fixedly installed on the upper surface of the I-shaped piston (402), a No. 1 spring (4) is installed on the upper surface of the sealing gasket (401) inside the safety valve body (1), and a connecting structure (5) is arranged on the upper surface of the safety valve body (1) and the lower surface of the valve cover (3).

2. A safety valve for gas production according to claim 1, characterized in that: The connection structure (5) comprises a circular rod (501), a circular groove (502), a rectangular connection plate (503), a rectangular groove (504), a No. 2 spring (505), a circular guide rod (506), an annular groove (507), an annular connection block (508), a circular clamping block (509), a circular clamping groove (510), and a circular hole (511).

3. A safety valve for gas production according to claim 2, characterized in that: An annular groove (507) is provided on the upper surface of the safety valve body (1), an annular connecting block (508) is fixedly mounted on the lower surface of the valve cover (3), an annular connecting block (508) is slidably mounted in the annular groove (507), and rectangular grooves (504) are provided at both ends of the interior of the safety valve body (1).

4. A safety valve for gas production according to claim 3, characterized in that: A circular groove (502) is provided at the lower end of one end surface of the rectangular groove (504), a circular rod (501) is slidably mounted in the circular groove (502), circular guide rods (506) are fixedly mounted in the middle of the two end surfaces of the rectangular groove (504), and a rectangular connecting plate (503) is slidably mounted on the outer surface of the circular guide rod (506).

5. A safety valve for gas production according to claim 4, characterized in that: A second spring (505) is sleeved on the other end of the rectangular connecting plate (503) on the outer surface of the circular guide rod (506), a circular rod (501) is fixedly mounted on the lower end of one end surface of the rectangular connecting plate (503), and a circular hole (511) is opened on the upper end of one end surface of the rectangular groove (504).

6. A safety valve for gas production according to claim 5, characterized in that: A circular clamping block (509) is fixedly mounted on the upper end of the surface of one end of the rectangular connecting plate (503), and circular clamping grooves (510) are provided at both ends of the annular connecting block (508), and the circular clamping block (509) is clamped in the circular clamping groove (510).

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