High-temperature gate valve

Abstract

The utility model provides a high-temperature gate valve, and belongs to the technical field of high-temperature gate valves. The high-temperature gate valve comprises a gate valve body and a valve plate assembly. The two sides of the gate valve fixedly communicate with conveying pipes, and a threaded valve rod is slidably arranged in the gate valve. The valve plate assembly comprises a rotating rod, a double-thread screw, a connecting sleeve, a connecting block, a first supporting rod, a second supporting rod and a blocking plate, during use, the blocking plate can block the conveying pipe, and when a wear gap exists between the blocking plate and the conveying pipe, the rotating rod and the double-thread screw can be rotated to block the conveying pipe; according to the gate valve, the two first supporting rods and the two second supporting rods can push the two blocking plates to move, the two blocking plates are driven to move reversely, the blocking plates can be pushed to move towards the conveying pipe, the blocking plates can block the conveying pipe again, the abrasion clearance can be dealt with, and the service life of the gate valve can be prolonged.

Description

Technical Field

[0001] The present application relates to the field of high-temperature gate valves, and in particular, to a high-temperature gate valve. Background Art

[0002] The high-temperature gate valve is an opening and closing device used for full opening and full closing. The opening and closing part of the high-temperature gate valve is the gate. The movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. In order to ensure the sealing effect when the gate valve is closed, there will be a certain pressure between the gate and the inlet and outlet pipes of the valve body. Furthermore, there will be a certain friction between the gate and the inlet and outlet pipes of the valve body. As the number of times the gate is fully opened and closed increases, the inlet and outlet pipes of the gate or the valve body will gradually wear out. Wear will produce gaps, which will reduce the sealing effect. In related high-temperature gate valve technologies, the gate structure used for sealing is relatively simple as a whole. The gate cannot cope with the wear gap, and its practicality is low, which limits the service life of the high-temperature gate valve. Utility Model Content

[0003] In order to make up for the above deficiencies, the present application provides a high-temperature gate valve, aiming to improve the problem of limited service life of the high-temperature gate valve.

[0004] An embodiment of the present application provides a high-temperature gate valve, comprising a gate valve and a valve plate assembly.

[0005] Both sides of the gate valve are fixedly connected with a delivery pipe, and a threaded valve stem is slidably provided inside the gate valve.

[0006] The cam is connected to the valve stem by a screw threaded rod and a screw threaded rod, and the cam is connected to the valve stem by a screw threaded rod and a screw threaded rod.

[0007] In a specific embodiment, the top end of the gate valve is rotatably connected to a threaded sleeve, the threaded sleeve is threadedly sleeved on the rod body of the threaded valve stem, and a first rotating handwheel is provided on the upper surface of the threaded sleeve.

[0008] In a specific embodiment, the rotating rod rotates through the center of the threaded valve stem, and a second rotating hand wheel is provided at the top end of the rotating rod.

[0009] In a specific embodiment, the bottom end of the threaded valve stem is fixedly inserted into the sleeve wall of the connecting sleeve, and the bottom end of the rotating rod is rotatably inserted into the interior of the connecting sleeve.

[0010] In a specific embodiment, the two first support rods are symmetrically arranged, and both of the first support rods are inclined.

[0011] In a specific embodiment, the two second support rods are symmetrically arranged, the two second support rods are inclined, and the two second support rods are symmetrically arranged with respect to the two first support rods.

[0012] In a specific embodiment, a sealing gasket is provided on one side of the two blocking plates, and the two sealing gaskets are respectively pressed against the ends of the two conveying pipes.

[0013] In a specific embodiment, the two blocking plates are both slidably connected to the interior of the connecting sleeve, and the two blocking plates are symmetrically arranged.

[0014] The beneficial effect of the present invention is as follows: the present invention obtains a high-temperature gate valve through the above-mentioned design. When in use, the blocking plate will block the delivery pipe, thereby completing the closure of the gate valve. When a wear gap appears between the blocking plate and the delivery pipe, the rotating rod and the double-headed screw can be rotated, and the double-headed screw drives the two connecting blocks to move relative to each other, thereby driving the two first support rods to rotate, thereby driving the two second support rods to rotate, thereby allowing the two first support rods and the two second support rods to push the two blocking plates to move, thereby driving the two blocking plates to move in the opposite direction, thereby pushing the blocking plate to move toward the delivery pipe, thereby allowing the blocking plate to re-block the delivery pipe, thereby coping with the wear gap, thereby increasing the service life of the gate valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the following is a brief introduction to the drawings required for use in the implementation methods. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the high-temperature gate valve structure provided by an embodiment of the present application;

[0017] Figure 2A schematic diagram of the partial structure of the first rotating hand wheel and the second rotating hand wheel provided in an embodiment of the present application;

[0018] Figure 3 A schematic diagram of the gate valve structure provided in an embodiment of the present application;

[0019] Figure 4 Schematic diagram of the valve plate assembly structure provided in an embodiment of the present application.

[0020] In the figure: 100-gate valve; 101-threaded sleeve; 102-first rotating handwheel; 110-delivery pipe; 120-threaded valve stem; 200-valve plate assembly; 210-rotating rod; 211-second rotating handwheel; 220-double-headed screw; 230-connecting sleeve; 240-connecting block; 250-first support rod; 260-second support rod; 270-sealing plate; 271-sealing gasket. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0022] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0023] See also Figure 1 The present application provides a high-temperature gate valve, including a gate valve 100 and a valve plate assembly 200 .

[0024] See also Figure 1-3 Both sides of the gate valve 100 are fixedly connected to the delivery pipe 110, and a threaded valve stem 120 is slidably provided inside the gate valve 100. The top of the gate valve 100 is rotatably connected to a threaded sleeve 101, and the threaded sleeve 101 is threadedly sleeved on the rod body of the threaded valve stem 120. A first rotating handwheel 102 is provided on the upper surface of the threaded sleeve 101, and the first rotating handwheel 102 is rotatably sleeved on the outside of the threaded valve stem 120.

[0025] See also Figure 1-4 The valve plate assembly 200 includes a rotating rod 210, a double-headed screw 220, a connecting sleeve 230, a connecting block 240, a first support rod 250, a second support rod 260 and a sealing plate 270. The rotating rod 210 is rotatably connected to the threaded valve stem 120. The rotating rod 210 rotates through the center of the threaded valve stem 120. A second rotating handwheel 211 is provided at the top of the rotating rod 210.

[0026] During the specific setting, the connecting sleeve 230 is fixedly connected to the bottom end of the threaded valve stem 120, the bottom end of the threaded valve stem 120 is fixedly passed through the sleeve wall of the connecting sleeve 230, the bottom end of the rotating rod 210 is rotated and inserted into the interior of the connecting sleeve 230, the connecting sleeve 230 slides inside the gate valve 100, the top end of the double-headed screw 220 is fixedly connected to the bottom end of the rotating rod 210, and the double-headed screw 220 rotates inside the connecting sleeve 230.

[0027] In the present application, two connecting blocks 240 are provided, and the two connecting blocks 240 are respectively threadedly sleeved on the two ends of the double-headed screw 220, and the two connecting blocks 240 are symmetrically arranged. One side of the two connecting blocks 240 is hinged with a first support rod 250, and the two first support rods 250 are symmetrically arranged, and the two first support rods 250 are both inclined. The other side of the two connecting blocks 240 is hinged with a second support rod 260, and the two second support rods 260 are symmetrically arranged, and the two second support rods 260 are both inclined. The two second support rods 260 are symmetrically arranged, and the two second support rods 260 are respectively symmetrically arranged with the two first support rods 250.

[0028] In this embodiment, two sealing plates 270 are provided, and the two sealing plates 270 are respectively sealed at the ends of the two conveying pipes 110. A sealing gasket 271 is provided on one side of the two sealing plates 270, and the two sealing gaskets 271 are respectively tightly pressed against the ends of the two conveying pipes 110. The two sealing plates 270 are both slidably connected to the inside of the connecting sleeve 230. The two sealing plates 270 are symmetrically arranged, and one end of the two first support rods 250 is hinged to one of the sealing plates 270, and one end of the two second support rods 260 is hinged to the other sealing plate 270.

[0029] When the gate valve 100 needs to be closed, the first rotating hand wheel 102 and the rotating rod 210 are rotated, thereby driving the double-headed screw 220 to rotate, thereby driving the two connecting blocks 240 to move away from each other, and the two connecting blocks 240 move in the opposite direction, thereby driving the first support rod 250 and the second support rod 260 to rotate, thereby driving the two blocking plates 270 to move relative to each other, and driving the blocking plates 270 and the sealing gasket 271 to enter the interior of the connecting sleeve 230, and then the first rotating hand wheel 102 and the threaded sleeve 101 can be rotated, thereby driving the threaded valve stem 120 and the connecting sleeve 230 to move upward, thereby opening the gate valve 100. When the gate valve 100 needs to be closed, the first rotating hand wheel 102 is rotated in the opposite direction, and the threaded valve stem 120 drives the connecting sleeve 230 to move upward. 0 moves downward, and the second rotating hand wheel 211 and the rotating rod 210 are rotated in the opposite direction. The rotating rod 210 drives the double-headed screw 220 to rotate, and then the two connecting blocks 240 can be driven to move relative to each other, and then the two first support rods 250 and the two second support rods 260 can be driven to rotate, and then the two blocking plates 270 can be driven to move in the opposite direction, so that the blocking plates 270 and the sealing gaskets 271 can be tightly pressed against the end of the delivery pipe 110. When the blocking plates 270, the sealing gaskets 271 and the delivery pipe 110 have wear gaps, the second rotating hand wheel 211 and the rotating rod 210 can be continued to be rotated in the opposite direction, thereby driving the two blocking plates 270 to continue to move in the opposite direction, and then the blocking plates 270 can be pushed toward the delivery pipe 110, so that the blocking plates 270 can be pressed against the delivery pipe 110 again, thereby sealing and sealing, thereby coping with the wear gap, and thereby increasing the service life of the gate valve 100.

[0030] The foregoing is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included within the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined or explained in subsequent figures.

[0031] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A high temperature gate valve, characterized in that: include A gate valve (100), wherein both sides of the gate valve (100) are fixedly connected to a delivery pipe (110), and a threaded valve stem (120) is slidably provided inside the gate valve (100); A valve plate assembly (200), the valve plate assembly (200) comprising a rotating rod (210), a double-headed screw (220), a connecting sleeve (230), a connecting block (240), a first support rod (250), a second support rod (260) and a blocking plate (270), wherein the rotating rod (210) is rotatably connected to the threaded valve stem (120), the connecting sleeve (230) is fixedly connected to the bottom end of the threaded valve stem (120), the connecting sleeve (230) slides inside the gate valve (100), the top end of the double-headed screw (220) is fixedly connected to the bottom end of the rotating rod (210), the double-headed screw (220) rotates inside the connecting sleeve (230), the connecting block (240) ) is provided with two pieces, the two connecting blocks (240) are respectively threadedly sleeved on the two ends of the double-headed screw (220), the two connecting blocks (240) are symmetrically arranged, one side of the two connecting blocks (240) is hinged with the first support rod (250), and the other side of the two connecting blocks (240) is hinged with the second support rod (260), and the blocking plates (270) are provided with two pieces, the two blocking plates (270) are respectively blocked at the ends of the two conveying pipes (110), one end of the two first support rods (250) is hinged to one of the blocking plates (270), and one end of the two second support rods (260) is hinged to the other blocking plate (270).

2. A high temperature gate valve according to claim 1, characterized in that: The top end of the gate valve (100) is rotatably connected to a threaded sleeve (101), which is threadedly sleeved on the rod body of the threaded valve stem (120), and a first rotating hand wheel (102) is provided on the upper surface of the threaded sleeve (101).

3. A high temperature gate valve according to claim 1, characterized in that: The rotating rod (210) rotates and passes through the center of the threaded valve stem (120), and a second rotating hand wheel (211) is provided at the top end of the rotating rod (210).

4. A high temperature gate valve according to claim 1, characterized in that: The bottom end of the threaded valve stem (120) is fixedly inserted into the wall of the connecting sleeve (230), and the bottom end of the rotating rod (210) is rotatably inserted into the interior of the connecting sleeve (230).

5. A high temperature gate valve according to claim 1, characterized in that: The two first support rods (250) are symmetrically arranged, and both of the first support rods (250) are inclined.

6. A high temperature gate valve according to claim 5, characterized in that: The two second support rods (260) are symmetrically arranged, the two second support rods (260) are both inclined, and the two second support rods (260) are respectively symmetrically arranged with the two first support rods (250).

7. A high temperature gate valve according to claim 1, characterized in that: A sealing gasket (271) is provided on one side of the two blocking plates (270), and the two sealing gaskets (271) are respectively tightly pressed against the ends of the two delivery pipes (110).

8. A high temperature gate valve according to claim 7, characterized in that: The two blocking plates (270) are both slidably connected to the interior of the connecting sleeve (230), and the two blocking plates (270) are symmetrically arranged.

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