Check valve for gas production

Abstract

The utility model relates to the related technical field of check valves, in particular to a check valve for gas production, which comprises a check valve, a valve body is arranged at one end of the check valve, an adjusting mechanism is arranged in the valve body, one end of the valve body is fixedly connected with a first gas conveying pipe, one end of the valve body is fixedly connected with a second gas conveying pipe, and the other end of the valve body is fixedly connected with a valve rod. The valve body comprises a limiting groove, an adjusting cavity, a first sliding groove, a movable cavity, a clamping block and a pressure cavity, in the using process, when the valve pressure of the check valve needs to be adjusted, a fixing rod on the surface of the limiting groove can be manually pushed aside, the fixing rod is placed at one end of a handle, at the moment, the handle is rotated, and the valve pressure is adjusted. The valve seat can extrude or loosen the spring while displacing, the pressure of the spring on the valve cover can be increased or reduced due to the deformation effect, and at the moment, the fixing rod is shifted into the corresponding limiting groove, so that the effect of adjusting the valve pressure of the check valve is achieved, and the working efficiency of the check valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field related to check valves, in particular to a check valve for gas extraction. Background Art

[0002] A one-way valve, also known as a check valve, is a device used to control the unidirectional flow of a fluid. A one-way valve is usually composed of a valve body, a valve disc, and a spring. When the fluid flows downstream along the pipeline, the valve cover opens under the action of the fluid pressure, and the fluid can pass freely. When the fluid tries to flow backward, the valve cover will be closed by the spring or other mechanism to prevent the fluid from flowing backward. A one-way valve for gas collection is a valve tube used for gas guiding and one-way transmission sealing when natural gas is collected. It can prevent leakage during natural gas collection and is used in various natural gas collection occasions. Therefore, a one-way valve for gas collection is particularly needed.

[0003] However, the existing gas extraction check valve does not have an adjustment mechanism inside during use, and the pressure of the valve cover cannot be adjusted at any time during the natural gas transmission process. As the pressure value inside the gas extraction check valve is fixed, the general check valve cannot adapt well to different working environments, thereby increasing engineering costs and may affect work efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a one-way valve for gas production to solve the problem of the existing one-way valve proposed in the above-mentioned background technology. During use, the general one-way valve for gas production has no adjustment mechanism inside, and the pressure of the valve cover cannot be adjusted at any time during the natural gas transmission process. As the pressure value inside the one-way valve for gas production is fixed, the general one-way valve cannot adapt well to different working environments, thereby increasing the project cost and possibly affecting the work efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a one-flow valve for gas extraction, comprising a one-flow valve, one end of which is provided with a valve body, an adjusting mechanism is provided inside the valve body, one end of the valve body is fixedly connected to a first gas pipeline, and one end of the valve body is fixedly connected to a second gas pipeline;

[0006] The valve body includes a limit groove, an adjusting cavity, a first sliding groove, a movable cavity, a snap block and a pressure cavity. The surface of one end of the valve body is provided with a limit groove, the interior of the valve body is provided with an adjusting cavity, the interior of the valve body is provided with a first sliding groove, the interior of the valve body is provided with a movable cavity, the surface of one side of the movable cavity is fixedly connected with a snap block, and the interior of the valve body is provided with a pressure cavity.

[0007] Preferably, the regulating chamber, the movable chamber and the pressure chamber are all interconnected.

[0008] Preferably, the adjusting mechanism comprises a handle, a fixed block, a fixed rod, a first transmission shaft, a sealing block, a first sealing rubber ring, a second transmission shaft, a connecting plate, a sliding rod, a sliding base, a sliding pile, a valve seat, a second sliding groove, a spring, a sliding strip, a valve cover, a valve disc, a locking groove and a second sealing rubber ring. A handle is provided at one end of the valve body, a fixed block is fixedly connected to one side of the handle, a fixed rod is movably sleeved inside the fixed block, one end of the handle is fixedly connected to the first transmission shaft, a sealing block is connected to a surface bearing on one side of the first transmission shaft, a first sealing rubber ring is fixedly connected to a surface on one side of the sealing block, and the other end of the sealing block is fixedly connected to There is a second transmission shaft, the other end of the second transmission shaft is fixedly connected to a connecting disk, the surface of one end of the connecting disk is fixedly connected to a sliding rod, the surface of one end of the sliding rod is movably abutted against a sliding base, the other end of the sliding base is fixedly connected to a sliding pile, the other end of the sliding pile is movably abutted against a valve seat, a second sliding groove is provided inside the valve seat, one end of the valve seat is fixedly connected to a spring, a sliding bar is movably sleeved inside the spring, one end of the sliding bar is fixedly connected to a valve cover, the other end of the valve cover is fixedly connected to a valve disc, a clamping groove is provided on the surface of one side of the valve disc, and a second sealing rubber ring is fixedly connected to the surface of one side of the valve disc.

[0009] Preferably, the limiting grooves are movably sleeved with the fixing rods, and the limiting grooves are arranged in eight groups.

[0010] Preferably, the connecting plate is fixedly connected to the handle via a first transmission shaft, and the first sliding groove is slidably connected to the sliding pile.

[0011] Preferably, the second sliding groove is slidably connected to the sliding bar, the sliding bar is fixedly connected to the valve cover, and the second sealing rubber ring is made of graphite.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the gas extraction check valve is provided with an adjusting mechanism, and during use, the pressure of the valve cover can be adjusted at any time according to demand during the natural gas transmission process, thereby ensuring the adjustability of the internal pressure value of the gas extraction check valve, and the gas extraction check valve can adapt well to different working environments, thereby reducing engineering costs and greatly improving the working efficiency of the gas extraction check valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the side view of the appearance structure of the utility model;

[0014] Figure 2 It is a partial structural diagram of the adjustment mechanism of the utility model;

[0015] Figure 3 This is a schematic diagram of the valve body structure of the utility model;

[0016] Figure 4 For this utility model Figure 3 The enlarged structural diagram at A in the middle;

[0017] Figure 5 This is a schematic diagram of the structure of the adjustment part of the utility model;

[0018] Figure 6 This is a schematic diagram of the structure of the second sealing rubber ring of the utility model.

[0019] In the figure: 1. check valve; 2. valve body; 201. limit groove; 202. regulating chamber; 203. first sliding groove; 204. movable chamber; 205. engaging block; 206. pressure chamber; 3. adjusting mechanism; 301. handle; 302. fixing block; 303. fixing rod; 304. first transmission shaft; 305. sealing block; 306. first sealing rubber ring; 307. second transmission shaft; 308. connecting plate; 309. sliding rod; 310. sliding base; 311. sliding pile; 312. valve seat; 313. second sliding groove; 314. spring; 315. sliding strip; 316. valve cover; 317. valve disc; 318. engaging groove; 319. second sealing rubber ring; 4. first gas pipeline; 5. second gas pipeline. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-6 The utility model provides a technical solution: a one-flow valve for gas extraction, comprising a one-flow valve 1, a valve body 2 is arranged at one end of the one-flow valve 1, an adjusting mechanism 3 is arranged inside the valve body 2, a first gas pipeline 4 is fixedly connected to one end of the valve body 2, and a second gas pipeline 5 is fixedly connected to one end of the valve body 2;

[0022] The valve body 2 includes a limit groove 201, an adjusting cavity 202, a first sliding groove 203, an active cavity 204, a snap-fit ​​block 205 and a pressure cavity 206. The surface of one end of the valve body 2 is provided with a limit groove 201, the interior of the valve body 2 is provided with an adjusting cavity 202, the interior of the valve body 2 is provided with a first sliding groove 203, the interior of the valve body 2 is provided with an active cavity 204, the surface of one side of the active cavity 204 is fixedly connected with a snap-fit ​​block 205, and the interior of the valve body 2 is provided with a pressure cavity 206. During use, the active cavity 204 and the pressure cavity 206 in the valve body 2 are valve pipe channels for gas guiding and one-way transport sealing, and are used in natural gas collection and other collection occasions.

[0023] Furthermore, the regulating chamber 202 , the movable chamber 204 , and the pressure chamber 206 are all interconnected. By configuring the regulating chamber 202 , the movable chamber 204 , and the pressure chamber 206 , each chamber can be independent of each other.

[0024] Furthermore, the regulating mechanism 3 includes a handle 301, a fixed block 302, a fixed rod 303, a first transmission shaft 304, a sealing block 305, a first sealing rubber ring 306, a second transmission shaft 307, a connecting plate 308, a sliding rod 309, a sliding base 310, a sliding pile 311, a valve seat 312, a second sliding groove 313, a spring 314, a sliding bar 315, a valve cover 316, a valve disc 317, a locking groove 318 and a second sealing rubber ring 319. A handle 301 is provided at one end of the valve body 2, a fixed block 302 is fixedly connected to one side of the handle 301, a fixed rod 303 is movably sleeved inside the fixed block 302, and a first transmission shaft 304 is fixedly connected to one end of the handle 301. The first transmission shaft 304 A sealing block 305 is connected to the surface bearing on one side, a first sealing rubber ring 306 is fixedly connected to the surface of one side of the sealing block 305, a second transmission shaft 307 is fixedly connected to the other end of the sealing block 305, a connecting plate 308 is fixedly connected to the surface of one end of the connecting plate 308, a sliding rod 309 is fixedly connected to the surface of one end of the connecting plate 308, a sliding base 310 is movably abutted against one end of the sliding rod 309, a sliding pile 311 is fixedly connected to the other end of the sliding base 310, a valve seat 312 is movably abutted against the other end of the sliding pile 311, a second sliding groove 313 is provided inside the valve seat 312, a spring 314 is fixedly connected to one end of the valve seat 312, a sliding bar 310 is movably sleeved inside the spring 314 5. One end of the sliding bar 315 is fixedly connected to a valve cover 316, and the other end of the valve cover 316 is fixedly connected to a valve disc 317. A locking groove 318 is provided on one side of the valve disc 317, and a second sealing rubber ring 319 is fixedly connected to one side of the valve disc 317. During use, when it is necessary to adjust the valve pressure of the check valve 1, the fixing rod 303 on the surface of the limiting groove 201 can be manually opened, and the fixing rod 303 is placed on one end of the handle 301. At this time, the handle 301 is turned, and the rotation of the handle 301 drives the first transmission shaft 304 to rotate, and the rotation of the first transmission shaft 304 drives the second transmission shaft 307 to rotate, and the rotation of the second transmission shaft 307 drives the connecting disc 308 to rotate. The rotation of the connecting plate 308 will drive the sliding rod 309 to slide on the surface of one side of the sliding base 310, so that the sliding rod 309 will drive the sliding base 310 to move, and the displacement of the sliding base 310 will drive the sliding pile 311 to slide on the surface of the first sliding groove 203, and the sliding pile 311 will drive the valve seat 312 to move, and the valve seat 312 will squeeze or release the spring 314 while moving, and the spring 314 will increase or reduce the pressure on the valve cover 316 due to the deformation effect. At this time, the fixing rod 303 is moved into the corresponding limit groove 201 to fix the rotation of the handle 301, and the position of the sliding pile 311 is also fixed, thereby achieving the effect of adjusting the valve pressure of the check valve 1.

[0025] Furthermore, the limiting groove 201 is movably connected to the fixing rod 303, and the limiting groove 201 is arranged in eight groups. Through the arrangement of the limiting groove 201 and the fixing rod 303, the fixing rod 303 can fix the handle 301. Through the arrangement of eight groups of limiting grooves 201, the number of fixed positions of the handle 301 is increased, thereby increasing the adjustability of the adjustment mechanism 3.

[0026] Furthermore, the connecting disk 308 is fixedly connected to the handle 301 through the first transmission shaft 304, and the first sliding groove 203 is slidingly connected to the sliding pile 311. Through the setting of the connecting disk 308, the first transmission shaft 304, and the handle 301, the rotation of the handle 301 can control the connecting disk 308. Through the setting of the first sliding groove 203 and the sliding pile 311, it can be ensured that the sliding base 310 will not rotate.

[0027] Furthermore, the second sliding groove 313 is slidably connected to the sliding bar 315, and the sliding bar 315 is fixedly connected to the valve cover 316. Through the setting of the second sliding groove 313 and the sliding bar 315, the pressurized natural gas can smoothly enter the active chamber 204. Through the setting of the sliding bar 315 and the valve cover 316, the sliding bar 315 can follow the valve cover 316 to perform displacement movement. The material of the second sealing rubber ring 319 is graphite. Through the setting of the second sealing rubber ring 319 made of graphite, the second sealing rubber ring 319 made of graphite has the advantages of high temperature resistance, corrosion resistance, chemical corrosion resistance, etc. in addition to good self-lubricating performance. In addition, the second sealing rubber ring 319 made of graphite also has relatively good sealing performance, which can effectively prevent gas or liquid leakage and is used under harsh conditions such as high temperature, high pressure, and corrosive media.

[0028] Working principle: During use, the active chamber 204 and the pressure chamber 206 in the valve body 2 are valve tube channels for gas guiding and one-way transport sealing, and are used in natural gas collection and other collection occasions. When it is necessary to adjust the valve pressure of the one-way valve 1, the fixing rod 303 on the surface of the limiting groove 201 can be manually opened, and the fixing rod 303 is placed on one end of the handle 301. At this time, the handle 301 is turned, and the valve seat 312 will squeeze or release the spring 314 while moving. The spring 314 will increase or reduce the pressure on the valve cover 316 due to the deformation effect. At this time, the fixing rod 303 is moved to the corresponding limiting groove 201, so as to achieve the effect of adjusting the valve pressure of the one-way valve 1, thereby improving the working efficiency of the one-way valve.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A one-flow valve for gas extraction, comprising a one-flow valve (1), characterized in that: A valve body (2) is provided at one end of the check valve (1), an adjusting mechanism (3) is provided inside the valve body (2), a first gas supply pipe (4) is fixedly connected to one end of the valve body (2), and a second gas supply pipe (5) is fixedly connected to one end of the valve body (2); The valve body (2) comprises a limit groove (201), an adjusting cavity (202), a first sliding groove (203), an active cavity (204), a snap-fit ​​block (205) and a pressure cavity (206); a limit groove (201) is provided on the surface of one end of the valve body (2); an adjusting cavity (202) is provided inside the valve body (2); a first sliding groove (203) is provided inside the valve body (2); an active cavity (204) is provided inside the valve body (2); a snap-fit ​​block (205) is fixedly connected to the surface of one side of the active cavity (204); and a pressure cavity (206) is provided inside the valve body (2).

2. A one-flow valve for gas extraction according to claim 1, characterized in that: The regulating chamber (202), the movable chamber (204), and the pressure chamber (206) are all interconnected.

3. A one-way valve for gas extraction according to claim 1, characterized in that: The regulating mechanism (3) comprises a handle (301), a fixing block (302), a fixing rod (303), a first transmission shaft (304), a sealing block (305), a first sealing rubber ring (306), a second transmission shaft (307), a connecting plate (308), a sliding rod (309), a sliding base (310), a sliding pile (311), a valve seat (312), a second sliding groove (313), a spring (314), a sliding bar (315), a valve cover (316), a valve disc (317), a locking groove (318) and A second sealing rubber ring (319), a handle (301) is provided at one end of the valve body (2), a fixed block (302) is fixedly connected to one side of the handle (301), a fixed rod (303) is movably sleeved inside the fixed block (302), one end of the handle (301) is fixedly connected to a first transmission shaft (304), a sealing block (305) is connected to a surface bearing on one side of the first transmission shaft (304), a first sealing rubber ring (306) is fixedly connected to the surface of one side of the sealing block (305), The other end of the sealing block (305) is fixedly connected to a second transmission shaft (307), the other end of the second transmission shaft (307) is fixedly connected to a connecting plate (308), the surface of one end of the connecting plate (308) is fixedly connected to a sliding rod (309), one end surface of the sliding rod (309) is movably abutted against a sliding base (310), the other end of the sliding base (310) is fixedly connected to a sliding pile (311), the other end of the sliding pile (311) is movably abutted against a valve seat (312), the valve seat ( A second sliding groove (313) is provided inside the valve seat (312), one end of the valve seat (312) is fixedly connected to a spring (314), a sliding bar (315) is movably sleeved inside the spring (314), one end of the sliding bar (315) is fixedly connected to a valve cover (316), the other end of the valve cover (316) is fixedly connected to a valve disc (317), a locking groove (318) is provided on the surface of one side of the valve disc (317), and a second sealing rubber ring (319) is fixedly connected to the surface of one side of the valve disc (317).

4. A one-flow valve for gas extraction according to claim 3, characterized in that: The limiting grooves (201) are movably sleeved with the fixing rods (303), and the limiting grooves (201) are arranged in eight groups.

5. A one-way valve for gas extraction according to claim 3, characterized in that: The connecting plate (308) is fixedly connected to the handle (301) via the first transmission shaft (304), and the first sliding groove (203) is slidably connected to the sliding pile (311).

6. A one-flow valve for gas extraction according to claim 3, characterized in that: The second sliding groove (313) is slidably connected to the sliding bar (315), the sliding bar (315) is fixedly connected to the valve cover (316), and the material of the second sealing rubber ring (319) is graphite.

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