Temporary shutoff valve for gas engineering

Abstract

The utility model relates to the technical field of valves, and discloses a temporary shutoff valve for gas engineering, which comprises a valve body, a mounting seat fixedly arranged at the upper end of the valve body, a sealing pipe fixedly arranged at the upper end of the mounting seat, a fixing frame fixedly arranged at the upper end of the mounting seat, and a screw rod arranged in the fixing frame in a threaded manner. And a handle is fixedly arranged at the upper end of the outer wall of the lead screw, a protective cylinder is fixedly arranged at the lower end of the handle, and the outer wall of the fixing frame is sleeved with the lower end of the protective cylinder. According to the temporary shutoff valve for the gas engineering, the lead screw and the upper end of the fixing piece can be better protected, and erosion of dust and rainwater is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a temporary shut-off valve for gas engineering. Background Art

[0002] Temporary shut-off valves for gas engineering are equipment used during the construction, maintenance or commissioning of gas pipelines. Their main function is to temporarily cut off the flow of gas during pipeline construction or maintenance to ensure operational safety.

[0003] The existing patent with publication number CN213900037U proposes a leakage-proof throttle valve for industrial valves. After the mobile sealing tube seals and blocks the connection between the valve body and the connecting pipe, the sealing rings on the outer sides of the two ends of the mobile sealing tube will fit the inner walls of the valve body and the connecting pipe, so that the connection gap between the mobile sealing tube and the valve body and the connecting pipe can be completely sealed, thereby preventing the medium from continuing to leak along the gap between the mobile sealing tube and the valve body and the connecting pipe.

[0004] However, after the valve core connecting rod is rotated, the threaded parts are exposed to the air for a long time, and dust and rainwater will cause wear and erosion of the threaded parts, which will affect the service life of the valve body. Utility Model Content

[0005] The purpose of the utility model is to provide a temporary shut-off valve for gas engineering, so as to solve the problem that after the valve core connecting rod of the existing device is rotated, the threaded parts are exposed to the air for a long time, and dust and rainwater will cause wear and erosion of the threaded parts, resulting in a shortened service life of the valve body.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a temporary shut-off valve for gas engineering, comprising a valve body, a mounting seat fixedly provided on the upper end of the valve body, a sealing tube fixedly provided on the upper end of the mounting seat, a fixing frame fixedly provided on the upper end of the mounting seat, a screw rod provided with an internal thread of the fixing frame, the lower end of the screw rod passes through the sealing tube to the interior of the valve body and is rotatably installed with a sealing plate, a handle fixedly provided on the upper end of the outer wall of the screw rod, a protective tube fixedly provided on the lower end of the handle, and the lower end of the protective tube is sleeved on the outer wall of the fixing frame.

[0007] Preferably, first screws are fixedly provided on both sides of the upper end of the mounting seat, mounting pieces are fixedly provided on both sides of the fixing frame, the first screw passes through the mounting pieces and a first nut is sleeved on the outer wall.

[0008] Preferably, a second screw is fixedly provided at the front and rear ends of the upper end of the mounting seat, the output end of the second screw passes through the sealing tube and a second nut is provided on the outer wall.

[0009] Preferably, a third screw is provided inside the mounting seat, a mounting hole is provided at the upper end of the valve body located at the lower end of the third screw, the output end of the third screw passes through the mounting hole and a third nut is provided on the outer wall thread.

[0010] Preferably, flanges are fixedly provided on both sides of the valve body.

[0011] Preferably, the protective tube is made of steel.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1) By providing a protective tube at the lower end of the handle, when the screw rotates to close the inside of the valve body, the fixing frame and the screw thread can be waterproofed to prevent the fixing frame and the screw thread from being exposed to dust and rain for a long time, thereby ensuring the long-term use of the threaded parts.

[0014] 2) By providing the sealing tube, the second screw and the second nut, when the sealing tube is installed on the upper end of the mounting seat, quick guided installation can be achieved, which relatively reduces the difficulty of the installation personnel's work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of a temporary shut-off valve for gas engineering in an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the valve body in the embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of a partially split structure in an embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of the disassembled structure of the mounting base and the sealing tube in an embodiment of the present utility model.

[0019] In the figure: 1. Valve body; 2. Mounting seat; 3. Flange; 4. Fixing bracket; 5. Screw; 6. Handle; 7. Sealing plate; 8. Protective tube; 9. Sealing tube; 10. Mounting part; 11. First screw; 12. Second screw; 13. Second nut; 14. Third screw; 15. Mounting hole. DETAILED DESCRIPTION

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

[0021] Example 1

[0022] Combine Figure 1-Figure 4 A temporary shut-off valve for gas engineering comprises a valve body 1, a mounting seat 2 is fixedly provided on the upper end of the valve body 1, a sealing tube 9 is fixedly provided on the upper end of the mounting seat 2, a fixing frame 4 is fixedly provided on the upper end of the mounting seat 2, a screw rod 5 is provided on the internal thread of the fixing frame 4, the lower end of the screw rod 5 passes through the sealing tube 9 and passes into the interior of the valve body 1 and is rotatably installed with a blocking plate 7, a handle 6 is fixedly provided on the upper end of the outer wall of the screw rod 5, a protective tube 8 is fixedly provided on the lower end of the handle 6, and the lower end of the protective tube 8 is sleeved on the outer wall of the fixing frame 4.

[0023] See Figure 1 、 Figure 3 and Figure 4 , it is further obtained that the front and rear ends of the upper end of the mounting seat 2 are fixedly provided with a second screw 12, the output end of the second screw 12 passes through the sealing tube 9 and the outer wall is provided with a second nut 13, a third screw 14 is provided inside the mounting seat 2, and a mounting hole 15 is provided at the upper end of the valve body 1 located at the lower end of the third screw 14, the output end of the third screw 14 passes through the mounting hole 15 and the outer wall is threadedly provided with a third nut, flanges 3 are fixedly provided on both sides of the valve body 1, and the material of the protective cylinder 8 is steel.

[0024] Specifically, the second screw 12 passes through the sealing tube 9 and cooperates with the second nut 13 to achieve a secure installation of the sealing tube 9. The third screw 14 passes through the mounting hole 15 and cooperates with the third nut to achieve a secure installation of the mounting base 2. The copper protective tube 8 can better ensure the long-term use of the protective tube 8.

[0025] Example 2

[0026] See Figure 3 On the basis of Example 1, it is further obtained that first screws 11 are fixedly provided on both sides of the upper end of the mounting seat 2, and mounting parts 10 are fixedly provided on both sides of the fixing frame 4. The first screw 11 passes through the mounting part 10 and a first nut is sleeved on the outer wall.

[0027] Specifically, the first screw 11 is used to pass through the mounting member 10 and cooperate with the first nut to fix the fixing frame 4.

[0028] During actual operation, when the valve body 1 needs to be closed, the handle 6 is turned, so that the handle 6 drives the protective tube 8 to move downward, so that the protective tube 8 includes the upper end of the fixing frame 4 and the threaded portion of the outer wall of the screw rod 5, thereby preventing the fixing frame 4 and the screw rod 5 from being exposed to the outside for a long time, and preventing dust and rain from eroding and damaging the screw rod 5;

[0029] When the sealing tube 9 needs to be installed on the upper end of the mounting seat 2, the sealing tube 9 is sleeved on the circular hole inside the mounting seat 2, and the front and rear end parts of the sealing tube 9 are sleeved on the outer wall of the second screw 12, and the second nut 13 is threadedly set on the outer wall of the second screw 12 to achieve quick guided installation.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood 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 the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A temporary shut-off valve for gas engineering, comprising a valve body (1), characterized in that: The upper end of the valve body (1) is fixedly provided with a mounting seat (2), the upper end of the mounting seat (2) is fixedly provided with a sealing tube (9), the upper end of the mounting seat (2) is fixedly provided with a fixing frame (4), the internal thread of the fixing frame (4) is provided with a screw rod (5), the lower end of the screw rod (5) passes through the sealing tube (9) and passes into the interior of the valve body (1) and is rotatably provided with a blocking plate (7), the upper end of the outer wall of the screw rod (5) is fixedly provided with a handle (6), the lower end of the handle (6) is fixedly provided with a protective tube (8), and the lower end of the protective tube (8) is sleeved on the outer wall of the fixing frame (4).

2. A temporary shut-off valve for gas engineering according to claim 1, characterized in that: A first screw rod (11) is fixedly provided on both sides of the upper end of the mounting seat (2), and a mounting piece (10) is fixedly provided on both sides of the fixing frame (4). The first screw rod (11) passes through the mounting piece (10) and a first nut is sleeved on the outer wall.

3. A temporary shut-off valve for gas engineering according to claim 1, characterized in that: A second screw rod (12) is fixedly provided at the front and rear ends of the upper end of the mounting seat (2); the output end of the second screw rod (12) passes through the sealing tube (9) and a second nut (13) is provided on the outer wall.

4. A temporary shut-off valve for gas engineering according to claim 1, characterized in that: A third screw (14) is provided inside the mounting seat (2); a mounting hole (15) is provided at the upper end of the valve body (1) located at the lower end of the third screw (14); the output end of the third screw (14) passes through the mounting hole (15) and a third nut is provided on the outer wall of the screw thread.

5. A temporary shut-off valve for gas engineering according to claim 1, characterized in that: Flanges (3) are fixedly provided on both sides of the valve body (1).

6. A temporary shut-off valve for gas engineering according to claim 1, characterized in that: The material of the protective tube (8) is steel.

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