High temperature resistant gate valve

Abstract

The utility model discloses a kind of high-temperature-resistant gate valves, including valve body and the connecting port of being set at the both sides of valve body, sealing unit is arranged in valve body, sealing unit includes two sealing seats, two push seats and two groups of push rods, one group of push rod includes two push rods, two push rods are rotatably connected with push seat, the end of push rod away from push seat is rotatably connected with corresponding sealing seat, push rod is used to cooperate push seat and push sealing seat to move, by sealing seat and sealing pad bevel contact, and then under the extrusion of sealing seat and sealing pad, cooperate to seal connecting port, when the external environment of gate valve is high temperature, sealing pad is softened under the influence of high temperature at this time, leading to not tight seal, at this time, by adjusting moving seat movement, control moving rod continues to move, so that sealing seat continues to extrude sealing pad, continue to ensure the sealing property of gate valve, adjust the sealing of gate valve under high temperature.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, specifically a high-temperature resistant gate valve. Background Technology

[0002] A gate valve is a type of valve that uses a gate or wedge-shaped disc that moves perpendicular to the fluid to open or close the flow of fluid in a pipeline.

[0003] When a gate valve is in operation, the valve body is sealed by adjusting the movement of the gate. The gate fits against the sealing gasket in the valve body to ensure a sealing effect, thereby controlling the opening and closing of the valve body. However, in actual use, gate valves are used in high-temperature environments. Under high-temperature conditions, the internal sealing gasket of the gate valve softens, resulting in a tight seal and poor sealing effect of the valve body. This application proposes a high-temperature resistant gate valve by adjusting the position of the gate to ensure that the gate is always in contact with the sealing gasket. Utility Model Content

[0004] The purpose of this invention is to provide a high-temperature resistant gate valve to solve the problems mentioned in the background art.

[0005] A high-temperature resistant gate valve includes a valve body and connection ports disposed on both sides of the valve body. A sealing unit is disposed within the valve body, and the sealing unit includes: Two sealing seats are located below the movable seat, and the sealing seats are respectively distributed in the two connection ports; Two push seats are located between two sealing seats; Two sets of push rods, one set of push rods includes two push rods, the two push rods are rotatably connected to the push seat, and the end of the push rod away from the push seat is rotatably connected to the corresponding sealing seat. The push rod is used to cooperate with the push seat to push the sealing seat to move.

[0006] Preferably, an upper connecting seat is installed on the top end face of the valve body, a lead screw is threaded into the upper connecting seat, and a handle is fixedly connected to the top end face of the lead screw.

[0007] Preferably, a sealing gasket is fixedly installed inside the connection port, and the sealing gasket fits into the sealing seat.

[0008] Preferably, the side of the sealing gasket closest to the sealing seat is provided as an inclined surface.

[0009] Preferably, the two push seats are provided with a moving rod.

[0010] Preferably, the top end face of the push seat is fixedly connected to the corresponding moving rod, and the top end face of the moving rod is fixedly connected to the moving seat, which is rotatably connected to the end of the lead screw.

[0011] Preferably, the bottom end face of the push seat is fixedly connected to the corresponding moving rod, which is inserted into the valve body.

[0012] Preferably, sliding rods are slidably connected to the inner walls of the two moving rods, and dampers are fixedly connected to one side of the corresponding sliding rods.

[0013] Preferably, a spring is sleeved on the outer peripheral wall of the sliding rod, and the two ends of the spring are fixedly connected to the corresponding push seat and damper, respectively.

[0014] By adopting the above technical solution, the position of the gate is adjusted to ensure that the gate is always in contact with the sealing gasket, thereby guaranteeing the sealing effect.

[0015] Compared with the prior art, the beneficial effects of this utility model are: this high-temperature resistant gate valve, By contacting the inclined surface of the sealing seat and the sealing gasket, the connection is sealed under the pressure of the sealing seat and the sealing gasket. When the external environment of the gate valve is high temperature, the sealing gasket will soften due to the high temperature, resulting in a loose seal. At this time, by adjusting the movement of the moving seat, the moving rod is controlled to continue to move, so that the moving seat continues to press the sealing gasket, thus ensuring the sealing performance of the gate valve and adjusting the sealing performance of the gate valve under high temperature. The moving seat pushes the corresponding moving rod to move. At this time, the moving rod drives the sealing seat to move through the sliding rod and the damper. The moving rod at the bottom is inserted into the valve body. When the moving seat continues to move, it pushes the moving rod at the top to move, which in turn pushes the pushing seat to move and compresses the sliding rod. At the same time, the sliding rod pushes the damper to compress the spring at the bottom. Meanwhile, when the moving rod is inserted into the valve body, the sealing seat is positioned corresponding to the connection port. As the pushing seat continues to move, it causes the pushing seat to rotate the pushing rod. Under the rotation of the pushing rod, the sealing seat is pushed to contact and squeeze the sealing gasket, ensuring that the sealing seat cooperates with the sealing gasket to seal the connection port. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the valve body structure of this utility model; Figure 3 This is a schematic diagram of the sealing seat structure of this utility model.

[0017] In the diagram: 1. Valve body; 11. Connection port; 12. Sealing gasket; 2. Upper connecting seat; 3. Lead screw; 4. Sealing unit; 41. Moving seat; 42. Moving rod; 43. Sealing seat; 44. Push seat; 45. Push rod; 46. Sliding rod; 47. Spring; 48. Damper. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-3 This utility model provides a technical solution: a high-temperature resistant gate valve, including a valve body 1 and connection ports 11 disposed on both sides of the valve body 1, wherein a sealing unit 4 is disposed in the valve body 1, and the sealing unit 4 includes: Two sealing seats 43 are located below the movable seat 41, and the sealing seats 43 are respectively distributed in the two connection ports 11; Two push seats 44 are located between two sealing seats 43; Two sets of push rods 45, one set of push rods 45 includes two push rods 45, the two push rods 45 are rotatably connected to the push seat 44, and the end of the push rod 45 away from the push seat 44 is rotatably connected to the corresponding sealing seat 43. The push rod 45 is used to cooperate with the push seat 44 to push the sealing seat 43 to move.

[0020] The valve body 1 is equipped with an upper connecting seat 2, and a screw rod 3 is threadedly connected to the upper connecting seat 2. A handle is fixedly connected to the top end of the screw rod 3. By rotating the screw rod 3 through the handle, the position of the sealing seat 43 is adjusted, which is used to control the opening and closing of the gate valve.

[0021] A sealing gasket 12 is fixedly installed inside the connection port 11, and the sealing gasket 12 fits against the sealing seat 43.

[0022] The sealing gasket 12 is set with an inclined surface on the side near the sealing seat 43. The sealing seat 43 contacts the inclined surface of the sealing gasket 12, and the sealing seat 43 and the sealing gasket 12 squeeze each other to seal the connection port 11. When the external environment of the gate valve is high temperature, the sealing gasket 12 will soften due to the high temperature, resulting in a loose seal. At this time, by adjusting the movement of the moving seat 41, the moving rod 42 is controlled to continue to move, so that the sealing seat 43 continues to squeeze the sealing gasket 12, thus ensuring the sealing performance of the gate valve and adjusting the sealing performance of the gate valve under high temperature.

[0023] Two push seats 44 are equipped with moving rods 42.

[0024] The top end face of the upper push seat 44 is fixedly connected to the corresponding moving rod 42. The top end face of the moving rod 42 is fixedly connected to the moving seat 41. The moving seat 41 is rotatably connected to the end of the lead screw 3. By rotating the lead screw 3, the moving seat 41 is driven to move. Under the movement of the moving seat 41, the moving seat 41 pushes the corresponding moving rod 42 to move.

[0025] The bottom end face of the lower push seat 44 is fixedly connected to the corresponding moving rod 42, which is inserted into the valve body 1.

[0026] Sliding rods 46 are slidably connected to the inner walls of the two moving rods 42, and dampers 48 are fixedly connected to one side of the two sliding rods 46 respectively. When the movable seat 41 pushes the corresponding movable rod 42 to move, the movable rod 42 drives the sealing seat 43 to move through the sliding rod 46 and the damper 48. When the movable seat 41 pushes the movable rod 42 downward, the lower movable rod 42 is inserted into the valve body 1. When the movable seat 41 continues to move, it pushes the upper movable rod 42 to move, which in turn pushes the movable seat 44 to move. When the push seat 44 moves, it compresses the sliding rod 46, and at the same time the sliding rod 46 pushes the damper 48 to compress the spring 47 below; Meanwhile, when the moving rod 42 is inserted into the valve body 1, the sealing seat 43 is correspondingly set with the connection port 11. As the pushing seat 44 continues to move, the pushing seat 44 pushes the pushing rod 45 to rotate. Under the rotation of the pushing rod 45, the sealing seat 43 is pushed to contact and squeeze with the sealing gasket 12, ensuring that the sealing seat 43 cooperates with the sealing gasket 12 to seal the connection port 11.

[0027] A spring 47 is sleeved on the outer peripheral wall of the sliding rod 46, and the two ends of the spring 47 are fixedly connected to the corresponding push seat 44 and damper 48 respectively.

Claims

1. A high-temperature resistant gate valve, comprising a valve body (1) and connection ports (11) disposed on both sides of the valve body (1), characterized in that: The valve body (1) is provided with a sealing unit (4), the sealing unit (4) comprising: Two sealing seats (43) are located below the movable seat (41), and the sealing seats (43) are respectively distributed in the two connection ports (11); Two push seats (44) are located between two sealing seats (43); Two sets of push rods (45), one set of push rods (45) includes two push rods (45), the two push rods (45) are rotatably connected to the push seat (44), the end of the push rod (45) away from the push seat (44) is rotatably connected to the corresponding sealing seat (43), the push rod (45) is used to cooperate with the push seat (44) to push the sealing seat (43) to move.

2. The high-temperature resistant gate valve as described in claim 1, characterized in that: The valve body (1) is provided with an upper connecting seat (2) on its top end face. A screw rod (3) is threaded into the upper connecting seat (2). A handle is fixedly connected to the top end face of the screw rod (3).

3. The high-temperature resistant gate valve as described in claim 1, characterized in that: A sealing gasket (12) is fixedly installed inside the connection port (11), and the sealing gasket (12) is in contact with the sealing seat (43).

4. The high-temperature resistant gate valve as described in claim 3, characterized in that: The sealing gasket (12) is sloped on the side near the sealing seat (43).

5. The high-temperature resistant gate valve as described in claim 1, characterized in that: The two push seats (44) are provided with moving rods (42).

6. The high-temperature resistant gate valve as described in claim 1, characterized in that: The top end face of the push seat (44) is fixedly connected to the corresponding moving rod (42), and the top end face of the moving rod (42) is fixedly connected to the moving seat (41), which is rotatably connected to the end of the lead screw (3).

7. The high-temperature resistant gate valve as described in claim 6, characterized in that: The bottom end face of the push seat (44) below is fixedly connected to the corresponding moving rod (42), which is inserted into the valve body (1).

8. The high-temperature resistant gate valve as described in claim 7, characterized in that: Sliding rods (46) are slidably connected to the inner walls of the two moving rods (42), and dampers (48) are fixedly connected to the corresponding side of the two sliding rods (46).

9. The high-temperature resistant gate valve as described in claim 8, characterized in that: A spring (47) is sleeved on the outer peripheral wall of the sliding rod (46), and the two ends of the spring (47) are fixedly connected to the corresponding push seat (44) and damper (48) respectively.

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