Split type protective valve

Abstract

The utility model relates to the technical field of valves, in particular to a split type protective valve which comprises a protective valve body, a valve cover body and a sleeve frame, a limiting rod enabling the valve cover body to be limited is welded to the outer side of the sleeve frame, and a through hole penetrating through the limiting rod is formed in the surface of the valve cover body. The outer side of the limiting rod is in threaded connection with a threaded sleeve for fixing the valve cover body, a threaded groove for enabling the threaded sleeve to move is formed in the surface of the limiting rod, and a transmission handle for driving the two-way threaded lead screw to rotate is connected to the outer side of the sleeve frame in an inserted mode. Through the arrangement of the limiting rod, the threaded sleeve, the threaded groove, the two-way threaded lead screw, the connecting sleeve A, the connecting sleeve B, the driving rod A, the driving rod B, the fixing block and the groove, the problems that when an existing protection valve is used, the valve cover body and the protection valve body are inconvenient to disassemble, and the maintenance efficiency of the protection valve body is low are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and particularly relates to a split protection valve. Background Art

[0002] A valve is one of the most important accessories on a pipeline. A split protection valve is a valve used to control pressure and protect the safety of equipment and workers. It consists of a main body, a locking nut, a spring, etc. When the pressure of liquid or gas exceeds the set value, the valve will automatically open and release the pressure to protect the safety of equipment and workers.

[0003] However, when the existing protection valve is in use, the valve cover and the valve body of the protection valve are usually of an integrated structure. However, when the protection valve fails, it is necessary for the staff to disassemble the protection valve from the pipeline and then use external tools to separate the valve cover and the valve body. The operation steps are cumbersome and will cause damage to the protection valve, which has a certain impact on the maintenance efficiency of the protection valve. Therefore, a split protection valve is provided. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a split protection valve. The utility model solves the problem that when the existing protection valve is in use, it is inconvenient to disassemble the valve cover main body and the protection valve body, and the maintenance efficiency of the protection valve body is low by setting a limiting rod, a threaded sleeve, a threaded groove, a double-threaded lead screw, a connecting sleeve A, a connecting sleeve B, a driving rod A, a driving rod B, a fixing block and a groove.

[0005] The technical solution adopted by the utility model to solve its technical problems is a split protection valve, which includes a protection valve body, a valve cover main body and a sleeve frame. A limiting rod for limiting the valve cover main body is welded on the outer side of the sleeve frame. A through hole passing through the limiting rod is opened on the surface of the valve cover main body. A threaded sleeve for fixing the valve cover main body is threadedly connected to the outer side of the limiting rod. A threaded groove for moving the threaded sleeve is opened on the surface of the limiting rod. A transmission handle for driving a double-threaded lead screw to rotate is inserted on the outer side of the sleeve frame. The outer part of the double-threaded lead screw is threadedly connected with a connecting sleeve A and a connecting sleeve B, and the connecting sleeve A is located on the left side of the connecting sleeve B. A driving rod A is welded on the outer part of the connecting sleeve A, and an arc plate A for connecting the joint of the valve cover main body and the protection valve body is fixed by screws on the outer side of the driving rod A. A driving rod B is fixed by screws on the outer part of the connecting sleeve B, and an arc plate B for connecting the joint of the valve cover main body and the protection valve body is fixed by screws on the outer side of the driving rod B. A fixing block entering the inside of the arc plate A is welded on the outer part of the arc plate B. A groove for the fixing block to enter the arc plate A is opened on the surface of the arc plate A.

[0006] By adopting the above technical solution, when it is necessary to separate the valve cover body from the protection valve body, rotate the transmission handle outside the sleeve frame. Subsequently, the transmission handle drives the rotation of the bidirectional threaded lead screw. The connecting sleeve A and the connecting sleeve B outside the bidirectional threaded lead screw move horizontally in opposite directions. Then, the connecting sleeve A drives the driving rod A to move, and the connecting sleeve B drives the driving rod B to move. The driving rod A drives the arc plate A to separate from the connection between the valve cover body and the protection valve body, and the driving rod B drives the arc plate B to separate from the connection between the valve cover body and the protection valve body. Then, rotate the threaded sleeve outside the limit rod, and the threaded sleeve moves through the threaded groove formed on the surface of the limit rod. Then, the threaded sleeve is removed from the outside of the limit rod. Then, pull the valve cover body to move on the protection valve body. Subsequently, the valve cover body is removed from the limit rod through the through hole formed on its surface, and the valve cover body is disassembled from the protection valve body, facilitating the maintenance of the inside of the protection valve body;

[0007] When the maintenance of the protection valve body is completed, place the through hole formed on the surface of the valve cover body outside the limit rod. Then, the valve cover body contacts the protection valve body. Subsequently, place the threaded sleeve outside the limit rod, and the threaded sleeve rotates through the threaded groove outside the limit rod. The threaded sleeve contacts the valve cover body, making the valve cover body and the protection valve body tightly connected. Then, rotate the transmission handle outside the socket. The transmission handle drives the connecting sleeve A and the connecting sleeve B outside the bidirectional threaded lead screw to move horizontally towards each other. The driving rod A outside the connecting sleeve A drives the arc plate A to move, and the driving rod B outside the connecting sleeve B drives the arc plate B to move. Then, the fixed block outside the arc plate B enters the groove formed on the surface of the arc plate A, making both the arc plate A and the arc plate B tightly connected to the connection between the valve cover body and the protection valve body, thus facilitating the installation and disassembly of the valve cover body and the protection valve body.

[0008] Specifically, rubber pads for improving the sealing performance at the joint between the valve cover body and the protection valve body are fixed by screws on the inner sides of the arc plate A and the arc plate B, and a sealing pad for improving the sealing performance at the joint between the valve cover body and the protection valve body is adhesively bonded to the inside of the valve cover body.

[0009] By adopting the above technical solution, when the valve cover body is connected to the protection valve body, the sealing pad inside the valve cover body is in close contact with the surface of the protection valve body. The arc plate A and the arc plate B move to the joint between the valve cover body and the protection valve body, and the rubber pads inside the arc plate A and the arc plate B are tightly connected to the joint between the valve cover body and the protection valve body, thereby improving the sealing performance of the connection between the valve cover body and the protection valve body.

[0010] Specifically, rubber sheets for increasing the frictional force between the threaded sleeve and the surface of the valve cover body are fixed by screws on the outside of the threaded sleeve.

[0011] By adopting the above technical solution, when the threaded sleeve fixes the valve cover body, the rubber pad inside the threaded sleeve increases the frictional force on the surface of the valve cover body, improving the stability of the connection between the valve cover body and the protection valve body.

[0012] Specifically, fixing sleeves are welded to the outside of the driving rod A and the driving rod B, and a cross bar for stabilizing the movement of the driving rod A and the driving rod B is slidably connected to the inside of the fixing sleeve.

[0013] By adopting the above technical solution, when the driving rod A and the driving rod B move, the fixing sleeves outside the driving rod A and the driving rod B slide outside the cross bar respectively, improving the stability of the movement of the driving rod A and the driving rod B.

[0014] Specifically, the inner size of the fixing sleeve matches the outer size of the cross bar.

[0015] By adopting the above technical solution, when the fixing sleeve slides outside the cross bar, the inner side of the fixing sleeve fits with the outside of the cross bar, improving the stability of the fixing sleeve sliding outside the cross bar.

[0016] The beneficial effects of the present utility model are as follows:

[0017] (1) For the split protection valve of the present utility model, when separating the valve cover body from the protection valve body, rotate the transmission handle outside the sleeve frame. Subsequently, the transmission handle drives the bidirectional threaded screw rod to rotate. The connecting sleeve A and the connecting sleeve B outside the bidirectional threaded screw rod move horizontally in opposite directions. Then, the connecting sleeve A drives the driving rod A to move, and the connecting sleeve B drives the driving rod B to move. The driving rod A drives the arc plate A to separate from the connection between the valve cover body and the protection valve body, and the driving rod B drives the arc plate B to separate from the connection between the valve cover body and the protection valve body. Then, rotate the threaded sleeve outside the limiting rod. The threaded sleeve moves through the thread groove formed on the surface of the limiting rod. Then, the threaded sleeve is removed from the outside of the limiting rod. Then, pull the valve cover body to move on the protection valve body. Subsequently, the valve cover body is removed from the limiting rod through the through hole formed on its surface, disassembling the valve cover body from the protection valve body, facilitating the maintenance of the inside of the protection valve body;

[0018] (2) For the split protection valve of the present utility model, after the maintenance of the protection valve body is completed, place the through hole formed on the surface of the valve cover body outside the limiting rod. Then, the valve cover body contacts the protection valve body. Subsequently, place the threaded sleeve outside the limiting rod. The threaded sleeve rotates through the thread groove outside the limiting rod and contacts the valve cover body, making the valve cover body and the protection valve body tightly connected. Then, rotate the transmission handle outside the socket. The transmission handle drives the connecting sleeve A and the connecting sleeve B outside the bidirectional threaded screw rod to move horizontally towards each other. The driving rod A outside the connecting sleeve A drives the arc plate A to move, and the driving rod B outside the connecting sleeve B drives the arc plate B to move, making both the arc plate A and the arc plate B tightly connected to the connection between the valve cover body and the protection valve body, thus facilitating the installation and disassembly of the valve cover body and the protection valve body.

[0019] (3) A split-type protection valve according to the present utility model. When the valve cover main body is connected to the protection valve body, the gasket in the valve cover main body is in close contact with the surface of the protection valve body. The arc plate A and the arc plate B move to the joint of the valve cover main body and the protection valve body, and the rubber gaskets in the arc plate A and the arc plate B are tightly connected to the joint of the valve cover main body and the protection valve body, thereby improving the sealing performance of the connection between the valve cover main body and the protection valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0021] Figure 1 is a schematic diagram of the overall structure of a split-type protection valve according to the present utility model;

[0022] Figure 2 is a schematic diagram of the partial structure A of a split-type protection valve according to the present utility model;

[0023] Figure 3 is a schematic diagram of the partial internal structure of the valve cover main body of a split-type protection valve according to the present utility model;

[0024] In the figure: 1. Arc plate A; 2. Driving rod A; 3. Groove; 4. Bidirectional threaded lead screw; 5. Connecting sleeve A; 6. Protection valve body; 7. Fixed block; 8. Valve cover main body; 9. Arc plate B; 10. Rubber gasket; 11. Fixed sleeve; 12. Cross bar; 13. Sleeve frame; 14. Driving rod B; 15. Connecting sleeve B; 16. Transmission handle; 17. Limiting rod; 18. Threaded sleeve; 19. Rubber sheet; 20. Thread groove; 21. Through hole; 22. Gasket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] For the convenience of disassembling the valve cover main body 8 from the protection valve body 6, as an embodiment of the present utility model, as Figure 1 、 Figure 2 and Figure 3As shown in the figure, a split protection valve of the present utility model includes a protection valve body 6, a valve cover main body 8, and a sleeve 13. A limiting rod 17 for limiting the valve cover main body 8 is welded to the outside of the sleeve 13. A through hole 21 passing through the limiting rod 17 is provided on the surface of the valve cover main body 8. A threaded sleeve 18 for fixing the valve cover main body 8 is threadedly connected to the outside of the limiting rod 17. A threaded groove 20 for moving the threaded sleeve 18 is provided on the surface of the limiting rod 17. A transmission handle 16 for driving a bidirectional threaded screw 4 to rotate is inserted into the outside of the sleeve 13. Connecting sleeves A 5 and B 15 are threadedly connected to the outside of the bidirectional threaded screw 4, and the connecting sleeve A 5 is located on the left side of the connecting sleeve B 15. A driving rod A 2 is welded to the outside of the connecting sleeve A 5, and an arc plate A 1 for connecting the joint between the valve cover main body 8 and the protection valve body 6 is fixed by screws on the outside of the driving rod A 2. A driving rod B 14 is fixed by screws on the outside of the connecting sleeve B 15, and an arc plate B 9 for connecting the joint between the valve cover main body 8 and the protection valve body 6 is fixed by screws on the outside of the driving rod B 14. A fixing block 7 entering the inside of the arc plate A 1 is welded to the outside of the arc plate B 9. A groove 3 for allowing the fixing block 7 to enter the arc plate A 1 is provided on the surface of the arc plate A 1.

[0027] During use, when it is necessary to separate the valve cover main body 8 from the protection valve body 6, rotate the transmission handle 16 outside the sleeve 13. Subsequently, the transmission handle 16 drives the bidirectional threaded screw 4 to rotate, and the connecting sleeves A 5 and B 15 outside the bidirectional threaded screw 4 move horizontally in opposite directions. Then, the connecting sleeve A 5 drives the driving rod A 2 to move, and the connecting sleeve B 15 drives the driving rod B 14 to move. The driving rod A 2 drives the arc plate A 1 to separate from the joint between the valve cover main body 8 and the protection valve body 6, and the driving rod B 14 drives the arc plate B 9 to separate from the joint between the valve cover main body 8 and the protection valve body 6. Then, rotate the threaded sleeve 18 outside the limiting rod 17, and the threaded sleeve 18 moves through the threaded groove 20 provided on the surface of the limiting rod 17. Then, the threaded sleeve 18 moves out from the outside of the limiting rod 17. Then, pull the valve cover main body 8 to move on the protection valve body 6. Subsequently, the valve cover main body 8 moves out from the limiting rod 17 through the through hole 21 provided on the surface, and the valve cover main body 8 is disassembled from the protection valve body 6, which is convenient for performing maintenance on the inside of the protection valve body 6;

[0028] After the maintenance of the protection valve body 6 is completed, place the through hole 21 opened on the surface of the valve cover body 8 outside the limit rod 17, then bring the valve cover body 8 into contact with the protection valve body 6, and then place the threaded sleeve 18 outside the limit rod 17. The threaded sleeve 18 rotates through the thread groove 20 outside the limit rod 17 and comes into contact with the valve cover body 8, making the valve cover body 8 and the protection valve body 6 tightly connected. Then rotate the transmission handle 16 outside the socket, and the transmission handle 16 drives the connecting sleeve A5 and the connecting sleeve B15 outside the double-threaded lead screw 4 to move horizontally towards each other. The driving rod A2 outside the connecting sleeve A5 drives the arc plate A1 to move, and the driving rod B14 outside the connecting sleeve B15 drives the arc plate B9 to move, making both the arc plate A1 and the arc plate B9 tightly connected to the connection part between the valve cover body 8 and the protection valve body 6, thus facilitating the installation and disassembly of the valve cover body 8 and the protection valve body 6.

[0029] To improve the sealing performance of the connection between the valve cover body 8 and the protection valve body 6, for example, as Figure 1 、 Figure 3 shown, the present utility model further includes that rubber pads 10 for improving the sealing performance at the joint between the valve cover body 8 and the protection valve body 6 are fixed by screws on the inner sides of the arc plate A1 and the arc plate B9, and a sealing pad 22 for improving the sealing performance at the connection between the valve cover body 8 and the protection valve body 6 is bonded on the inner side of the valve cover body 8.

[0030] During use, when the valve cover body 8 is connected to the protection valve body 6, the sealing pad 22 inside the valve cover body 8 is in close contact with the surface of the protection valve body 6. The arc plate A1 and the arc plate B9 move to the joint between the valve cover body 8 and the protection valve body 6, and the rubber pads 10 inside the arc plate A1 and the arc plate B9 are tightly connected to the joint between the valve cover body 8 and the protection valve body 6, thereby improving the sealing performance of the connection between the valve cover body 8 and the protection valve body 6.

[0031] To improve the stability of the connection between the valve cover body 8 and the protection valve body 6, for example, as Figure 2 shown, the present utility model further includes that rubber sheets 19 for increasing the frictional force between the threaded sleeve 18 and the surface of the valve cover body 8 are fixed by screws on the outer side of the threaded sleeve 18.

[0032] During use, when the threaded sleeve 18 fixes the valve cover body 8, the rubber sheets 19 inside the threaded sleeve 18 increase the frictional force on the surface of the valve cover body 8, improving the stability of the connection between the valve cover body 8 and the protection valve body 6.

[0033] To improve the stability of the movement of the driving rod A2 and the driving rod B14, for example, as Figure 1 shown, the present utility model further includes that fixing sleeves 11 are welded on the outsides of both the driving rod A2 and the driving rod B14, and cross bars 12 for making the movement of the driving rod A2 and the driving rod B14 stable are slidably connected to the inside of the fixing sleeves 11.

[0034] During use, when the driving rod A2 and the driving rod B14 move, the fixed sleeves 11 outside the driving rod A2 and the driving rod B14 slide outside the cross bar 12 respectively, improving the stability of the movement of the driving rod A2 and the driving rod B14.

[0035] To improve the stability of the fixed sleeve 11 sliding outside the cross bar 12, exemplarily, as Figure 1 shown, the present utility model further includes that the inner size of the fixed sleeve 11 matches the outer size of the cross bar 12.

[0036] During use, when the fixed sleeve 11 slides outside the cross bar 12, the inner side of the fixed sleeve 11 fits with the outside of the cross bar 12, improving the stability of the fixed sleeve 11 sliding outside the cross bar 12.

[0037] When the present utility model is in use and it is necessary to separate the valve cover body 8 from the protection valve body 6, rotate the transmission handle 16 outside the sleeve frame 13. Subsequently, the transmission handle 16 drives the bidirectional threaded screw rod 4 to rotate. The connecting sleeve A5 and the connecting sleeve B15 outside the bidirectional threaded screw rod 4 move in opposite horizontal directions. Then, the connecting sleeve A5 drives the driving rod A2 to move, and the connecting sleeve B15 drives the driving rod B14 to move. The driving rod A2 drives the arc plate A1 to separate from the connection between the valve cover body 8 and the protection valve body 6, and the driving rod B14 drives the arc plate B9 to separate from the connection between the valve cover body 8 and the protection valve body 6. Then, rotate the threaded sleeve 18 outside the limiting rod 17, and the threaded sleeve 18 moves through the threaded groove 20 formed on the surface of the limiting rod 17. Then, the threaded sleeve 18 moves out of the limiting rod 17. Then, pull the valve cover body 8 to move on the protection valve body 6. Subsequently, the valve cover body 8 moves out of the limiting rod 17 through the through hole 21 formed on its surface, disassembling the valve cover body 8 from the protection valve body 6, facilitating the maintenance of the inside of the protection valve body 6;

[0038] After the maintenance of the protection valve body 6 is completed, place the through hole 21 formed on the surface of the valve cover body 8 outside the limiting rod 17. Then, the valve cover body 8 contacts the protection valve body 6. Subsequently, place the threaded sleeve 18 outside the limiting rod 17, and the threaded sleeve 18 rotates through the threaded groove 20 outside the limiting rod 17. The threaded sleeve 18 contacts the valve cover body 8, making the valve cover body 8 and the protection valve body 6 tightly connected. Then, rotate the transmission handle 16 outside the socket, and the transmission handle 16 drives the connecting sleeve A5 and the connecting sleeve B15 outside the bidirectional threaded screw rod 4 to move horizontally towards each other. The driving rod A2 outside the connecting sleeve A5 drives the arc plate A1 to move, and the driving rod B14 outside the connecting sleeve B15 drives the arc plate B9 to move, making both the arc plate A1 and the arc plate B9 tightly connected to the connection between the valve cover body 8 and the protection valve body 6, thus facilitating the installation and disassembly of the valve cover body 8 and the protection valve body 6;

[0039] When the valve cover body 8 is connected to the protection valve body 6, the gasket 22 inside the valve cover body 8 is in close contact with the surface of the protection valve body 6. The arc plate A1 and the arc plate B9 move to the joint of the valve cover body 8 and the protection valve body 6, and the rubber pads 10 inside the arc plate A1 and the arc plate B9 are tightly connected to the joint of the valve cover body 8 and the protection valve body 6, thereby improving the sealing performance of the connection between the valve cover body 8 and the protection valve body 6;

[0040] When the threaded sleeve 18 fixes the valve cover body 8, the rubber sheet 19 inside the threaded sleeve 18 increases the friction force on the surface of the valve cover body 8, improving the stability of the connection between the valve cover body 8 and the protection valve body 6;

[0041] When the drive rod A2 and the drive rod B14 move, the fixing sleeves 11 outside the drive rod A2 and the drive rod B14 slide outside the cross bar 12 respectively, improving the stability of the movement of the drive rod A2 and the drive rod B14;

[0042] When the fixing sleeve 11 slides outside the cross bar 12, the inner side of the fixing sleeve 11 fits with the outside of the cross bar 12, improving the stability of the fixing sleeve 11 sliding outside the cross bar 12.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope claimed by the present invention. The scope claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A split protection valve, characterized in that: The invention comprises a protective valve body (6), a valve cover body (8) and a sleeve (13); a limit rod (17) for limiting the valve cover body (8) is welded on the outer side of the sleeve (13); a through hole (21) for passing the limit rod (17) is provided on the surface of the valve cover body (8); a threaded sleeve (18) for fixing the valve cover body (8) is threadedly connected on the outer side of the limit rod (17); a threaded groove (20) for moving the threaded sleeve (18) is provided on the surface of the limit rod (17); a transmission handle (16) for driving a bidirectional threaded screw (4) to rotate is inserted on the outer side of the sleeve (13); the bidirectional threaded screw (4) is externally threadedly connected to a connecting sleeve A (5) and a connecting sleeve B (15); and the connecting sleeve (20) is connected to the connecting sleeve (18) through the threaded sleeve (20). The connecting sleeve A (5) is located on the left side of the connecting sleeve B (15). A driving rod A (2) is welded to the outside of the connecting sleeve A (5), and an arc plate A (1) connected to the joint of the valve cover body (8) and the protection valve body (6) is fixed by screws on the outside of the driving rod A (2). A driving rod B (14) is fixed to the outside of the connecting sleeve B (15), and an arc plate B (9) connected to the joint of the valve cover body (8) and the protection valve body (6) is fixed by screws on the outside of the driving rod B (14). A fixing block (7) entering the inside of the arc plate A (1) is welded to the outside of the arc plate B (9), and a groove (3) is provided on the surface of the arc plate A (1) for the fixing block (7) to enter the inside of the arc plate A (1).

2. A split protection valve according to claim 1, characterized in that: The arc plate A (1) and the arc plate B (9) are screwed with a rubber pad (10) on the inner side to improve the sealing performance of the joint between the valve cover body (8) and the protective valve body (6), and the inner side of the valve cover body (8) is bonded with a sealing pad (22) to improve the sealing performance of the joint between the valve cover body (8) and the protective valve body (6).

3. A split protection valve according to claim 1, characterized in that: A rubber sheet (19) for increasing the surface friction between the threaded sleeve (18) and the valve cover body (8) is screw-fixed on the outer side of the threaded sleeve (18).

4. A split protection valve according to claim 1, characterized in that: The driving rod A (2) and the driving rod B (14) are both welded with a fixing sleeve (11) on the outside, and the fixing sleeve (11) is slidably connected to the inside with a cross bar (12) for making the driving rod A (2) and the driving rod B (14) move stably.

5. A split protection valve according to claim 4, characterized in that: The inner size of the fixing sleeve (11) matches the outer size of the cross bar (12).

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