Non-backflow nitrogen supply valve

Abstract

The utility model discloses a non-backflow nitrogen supply valve which comprises a nitrogen supply valve body, a first air inlet pipe and a first air outlet pipe, one end of the nitrogen supply valve body is fixedly connected with a valve air inlet pipe, and the other end of the nitrogen supply valve body is fixedly connected with a valve air outlet pipe. Connecting structures are arranged between the valve air inlet pipe and the first air inlet pipe and between the valve air outlet pipe and the first air outlet pipe correspondingly, and each connecting structure comprises a first connecting block, an arc-shaped connecting block, a first threaded groove, a circular butt joint block, a circular butt joint groove, a circular sealing gasket and an arc-shaped connecting groove. According to the non-backflow nitrogen supply valve, the first connecting block and the second connecting block can be in butt joint, then the rotating block is rotated to drive the rotating sleeve to rotate, the second threaded groove formed in the inner surface of the rotating sleeve is in threaded connection with the first threaded groove formed in the outer surface of the arc-shaped connecting block, installation is convenient and simple, and time and labor are saved; and a plurality of fixing bolts do not need to be screwed for fixed installation.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a non-backflow nitrogen supply valve. Background Art

[0002] The nitrogen supply valve commonly used is a self-operated pressure regulating valve. The self-operated pressure regulating valve (self-operated pressure control valve) does not require external energy and can work in places without electricity and gas. For example, a non-backflow nitrogen supply valve with a publication number of CN216895961U includes a main valve assembly, an actuator and a controller. The valve inlet of the main valve assembly is provided with a non-return one-way valve connected to the controller. The non-return one-way valve includes a non-return valve body, a soft sealing valve core, a spring, a spring seat and an adjusting sleeve. The non-return nitrogen supply valve is provided with a non-return one-way valve at the valve inlet of the main valve assembly of the nitrogen supply valve, and a soft sealing valve core is provided inside the non-return one-way valve. When there is no pressure at the valve inlet of the main valve assembly, the nitrogen sealing gas in the storage tank flows back into the pipeline. Since the gas in the storage tank is micro-pressure gas, the non-return one-way valve and the soft sealing valve core inside the non-return one-way valve are provided to ensure that the gas does not flow back, and the sealing effect is good. During the installation of the non-return nitrogen supply valve, a plurality of fastening bolts need to be screwed to install the nitrogen supply valve on the air inlet pipe and the air outlet pipe, and the installation is time-consuming, labor-intensive and troublesome. Utility Model Content

[0003] The main purpose of the utility model is to provide a non-backflow nitrogen supply valve, 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 non-backflow nitrogen supply valve comprises a nitrogen supply valve body, a No. 1 air inlet pipe and a No. 1 air outlet pipe, wherein one end of the nitrogen supply valve body is fixedly connected to the valve air inlet pipe, and the other end of the nitrogen supply valve body is fixedly connected to the valve air outlet pipe, and connection structures are provided between the valve air inlet pipe and the No. 1 air inlet pipe, and between the valve air outlet pipe and the No. 1 air outlet pipe.

[0006] Preferably, the connection structure includes a No. 1 connection block, an arc-shaped connection block, a No. 1 threaded groove, a circular docking block, a circular docking groove, a circular sealing gasket, an arc-shaped connection groove, a No. 2 connection block, a rotating sleeve, a rotating block, a cylindrical groove, and a No. 2 threaded groove.

[0007] Preferably, one end of the valve air inlet pipe is fixedly connected to a No. 1 connecting block, an arc-shaped connecting block is annularly installed on the surface of one end of the No. 1 connecting block, and a No. 1 threaded groove is provided at one end of the outer surface of the arc-shaped connecting block.

[0008] Preferably, a circular docking block is fixedly installed in the middle of one end surface of the No. 1 connecting block, and the other end of the No. 1 air intake pipe is fixedly connected to the No. 2 connecting block, and a circular docking groove is opened in the middle of one end surface of the No. 2 connecting block.

[0009] Preferably, a circular sealing gasket is fixedly installed on the other end surface of the circular docking groove, a circular docking block is docked in the circular docking groove, and an arc-shaped connecting groove is annularly provided on the second connecting block.

[0010] Preferably, an arc-shaped connecting block is inserted into the inner surface of the arc-shaped connecting groove, a cylindrical groove is opened on the rotating block, a rotating block is slidably installed on the outer surface of the No. 1 intake pipe, and a rotating sleeve is fixedly installed on the other end of the rotating block.

[0011] Preferably, a No. 2 thread groove is provided on the inner surface of the rotating sleeve, and the No. 2 thread groove provided on the inner surface of the rotating sleeve is threadedly connected to a No. 1 thread groove provided on the outer surface of the arc-shaped connecting block.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] In the utility model, through the connection structure provided, the No. 1 connection block can be connected with the No. 2 connection block, and then the rotating block is rotated to drive the rotating sleeve to rotate, so that the No. 2 thread groove opened on the inner surface of the rotating sleeve is threadedly connected with the No. 1 thread groove opened on the outer surface of the arc-shaped connection block. The installation is convenient and simple, saving time and labor, and there is no need to screw multiple fixing bolts for fixing and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a non-backflow nitrogen supply valve of the utility model;

[0015] Figure 2 This is a disassembled view of a non-backflow nitrogen supply valve of the utility model;

[0016] Figure 3 It is a partial cross-sectional view of a non-backflow nitrogen supply valve of the utility model;

[0017] Figure 4 The utility model is a non-return nitrogen supply valve Figure 3 Enlarged view of point A in the middle.

[0018] In the figure: 1. nitrogen supply valve body; 2. valve air inlet pipe; 3. valve air outlet pipe; 4. No. 1 air inlet pipe; 401. No. 1 air outlet pipe; 5. connection structure; 501. No. 1 connection block; 502. arc-shaped connection block; 503. No. 1 threaded groove; 504. circular docking block; 505. circular docking groove; 506. circular sealing gasket; 507. arc-shaped connection groove; 508. No. 2 connection block; 509. rotating sleeve; 510. rotating block; 511. cylindrical groove; 512. No. 2 threaded groove. DETAILED DESCRIPTION

[0019] 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.

[0020] like Figure 1-4 As shown, a non-backflow nitrogen supply valve comprises a nitrogen supply valve body 1, a No. 1 air inlet pipe 4, and a No. 1 air outlet pipe 401. One end of the nitrogen supply valve body 1 is fixedly connected to a valve air inlet pipe 2, and the other end of the nitrogen supply valve body 1 is fixedly connected to a valve air outlet pipe 3. A connecting structure 5 is provided between the valve air inlet pipe 2 and the No. 1 air inlet pipe 4, and between the valve air outlet pipe 3 and the No. 1 air outlet pipe 401.

[0021] The connection structure 5 includes a No. 1 connection block 501, an arc-shaped connection block 502, a No. 1 threaded groove 503, a circular docking block 504, a circular docking groove 505, a circular sealing gasket 506, an arc-shaped connection groove 507, a No. 2 connection block 508, a rotating sleeve 509, a rotating block 510, a cylindrical groove 511, and a No. 2 threaded groove 512; one end of the valve air inlet pipe 2 is fixedly connected to the No. 1 connection block 501, and the arc-shaped connection block 502 is annularly installed on the surface of one end of the No. 1 connection block 501, and a No. 1 threaded groove 503 is provided on one end of the outer surface of the arc-shaped connection block 502; a circular docking block 504 is fixedly installed in the middle of the surface of one end of the No. 1 connection block 501, and the other end of the No. 1 air inlet pipe 4 is fixedly connected to the No. 2 connection block 508, and the No. 2 connection block 50 A circular docking groove 505 is provided in the middle of the surface of one end; a circular sealing gasket 506 is fixedly installed on the surface of the other end of the circular docking groove 505, a circular docking block 504 is docked in the circular docking groove 505, and an arc-shaped connecting groove 507 is provided in an annular shape on the No. 2 connecting block 508; an arc-shaped connecting block 502 is inserted into the inner surface of the arc-shaped connecting groove 507, a cylindrical groove 511 is provided on the rotating block 510, a rotating block 510 is slidably installed on the outer surface of the No. 1 intake pipe 4, and a rotating sleeve 509 is fixedly installed on the other end of the rotating block 510; a No. 2 thread groove 512 is provided on the inner surface of the rotating sleeve 509, and the No. 2 thread groove 512 provided on the inner surface of the rotating sleeve 509 is threadedly connected with the No. 1 thread groove 503 provided on the outer surface of the arc-shaped connecting block 502.

[0022] It should be noted that the utility model is a non-reflux nitrogen supply valve. When the nitrogen supply valve body 1 needs to be installed, the nitrogen supply valve body 1 needs to be picked up first to dock the No. 1 connecting block 501 with the No. 2 connecting block 508, so that the circular docking block 504 fixedly installed on one end surface of the No. 1 connecting block 501 is inserted into the circular docking groove 505 opened on the other end surface of the No. 2 connecting block 508, and the No. 1 threaded groove 503 annularly installed on one end surface of the No. 1 connecting block 501 is inserted into the arc-shaped connecting groove 507 annularly opened on the No. 2 connecting block 508. , and then pull the rotating block 510 to make the rotating block 510 slide toward the other end of the outer surface of the No. 1 intake pipe 4 until the rotating sleeve 509 contacts the arc-shaped connecting block 502, and then rotate the rotating block 510, thereby driving the rotating sleeve 509 fixedly installed at the other end of the rotating block 510 to rotate, so that the No. 2 thread groove 512 opened on the inner surface of the rotating sleeve 509 is threadedly connected with the No. 1 thread groove 503 opened on the outer surface of the arc-shaped connecting block 502, completing the installation of the nitrogen supply valve body 1, saving time and effort, and there is no need to screw multiple fixing bolts to fix it.

[0023] 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 non-backflow nitrogen supply valve, characterized in that: The nitrogen supply valve comprises a nitrogen supply valve body (1), a first air inlet pipe (4), and a first air outlet pipe (401); one end of the nitrogen supply valve body (1) is fixedly connected to the valve air inlet pipe (2); the other end of the nitrogen supply valve body (1) is fixedly connected to the valve air outlet pipe (3); and a connecting structure (5) is provided between the valve air inlet pipe (2) and the first air inlet pipe (4), and between the valve air outlet pipe (3) and the first air outlet pipe (401).

2. A non-backflow nitrogen supply valve according to claim 1, characterized in that: The connection structure (5) comprises a No. 1 connection block (501), an arc-shaped connection block (502), a No. 1 threaded groove (503), a circular docking block (504), a circular docking groove (505), a circular sealing gasket (506), an arc-shaped connection groove (507), a No. 2 connection block (508), a rotating sleeve (509), a rotating block (510), a cylindrical groove (511), and a No. 2 threaded groove (512).

3. A non-backflow nitrogen supply valve according to claim 2, characterized in that: One end of the valve air inlet pipe (2) is fixedly connected to a No. 1 connection block (501), one end surface of the No. 1 connection block (501) is annularly mounted with an arc-shaped connection block (502), and one end of the outer surface of the arc-shaped connection block (502) is provided with a No. 1 thread groove (503).

4. A non-backflow nitrogen supply valve according to claim 3, characterized in that: A circular docking block (504) is fixedly mounted in the middle of one end surface of the No. 1 connection block (501), and a No. 2 connection block (508) is fixedly connected to the other end of the No. 1 air intake pipe (4), and a circular docking groove (505) is provided in the middle of one end surface of the No. 2 connection block (508).

5. A non-backflow nitrogen supply valve according to claim 4, characterized in that: A circular sealing gasket (506) is fixedly mounted on the other end surface of the circular docking groove (505), a circular docking block (504) is docked in the circular docking groove (505), and an arc-shaped connecting groove (507) is annularly provided on the second connecting block (508).

6. A non-backflow nitrogen supply valve according to claim 5, characterized in that: An arc-shaped connecting block (502) is inserted into the inner surface of the arc-shaped connecting groove (507), a cylindrical groove (511) is provided on the rotating block (510), a rotating block (510) is slidably mounted on the outer surface of the first air intake pipe (4), and a rotating sleeve (509) is fixedly mounted on the other end of the rotating block (510).

7. A non-backflow nitrogen supply valve according to claim 6, characterized in that: A No. 2 thread groove (512) is formed on the inner surface of the rotating sleeve (509), and the No. 2 thread groove (512) formed on the inner surface of the rotating sleeve (509) is threadedly connected to a No. 1 thread groove (503) formed on the outer surface of the arc-shaped connecting block (502).

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