Hydraulically operated open-body gate valve

Abstract

The utility model discloses a kind of liquid open type gate valve, including valve body, and valve body middle part is equipped with valve cavity;Valve body is provided with top roller guide group, bottom roller guide group, and top roller guide group, bottom roller guide group between slidingly provided with valve plate;Valve plate includes plate frame, and the left part of plate frame is provided with first blind plate, second blind plate, and first blind plate, second blind plate between being connected with blind plate clamping mechanism;The right part of plate frame is provided with first transparent plate, second transparent plate, and first transparent plate, second transparent plate between being connected with transparent plate clamping mechanism;Blind plate clamping mechanism, transparent plate clamping mechanism are all communicated with main oil inlet pipe, main oil outlet pipe, and the other end of main oil inlet pipe, main oil outlet pipe is connected with oil source;Plate frame is provided with drag chain mechanism;Chain is arranged on the bottom end surface of plate frame, and chain is connected drive mechanism.The utility model can prolong the service life of oil pipe, and then improve the service life of valve body, with the advantages of simple structure, convenient and practical, can effectively reduce failure rate.

Description

Technical Field

[0001] This utility model relates to the field of slide gate valve technology, and more specifically to a hydraulically operated open slide gate valve. Background Technology

[0002] A slide gate valve, also known as a manual knife gate valve, is a type of valve in which the gate and the valve seat are always in close contact for sealing. Its principle is that there is a circular opening the size of the passage on the gate. By opening and closing the gate, the circular opening on the gate can completely disengage from and match the passage.

[0003] The open-type slide gate valve has a frame structure. It is used in industrial pipelines for opening and closing, and is widely used in pipelines in metallurgy, petroleum, chemical, gas and other industrial sectors.

[0004] The current working principle of a slide gate valve is as follows: When the slide gate valve is in the through-hole working state, the sealing pair is clamped, and the fluid medium can pass through. When isolation is required, the valve's actions are as follows: release, move, and clamp. Releasing prepares for the movement of the valve plate, because the valve plate must have a gap to move. The purpose of releasing is to create this gap. Moving involves moving the valve plate from the blind hole position to the through-hole position. Once the blind hole position is reached, it stops, clamps, and the screw rotates in the opposite direction to eliminate the gap created after releasing, ensuring tight contact between the valve body and the valve plate sealing pair. This achieves the purpose of cutting off the flow of the medium in the pipeline and preventing external leakage, and vice versa.

[0005] In existing hydraulic open slide gate valves, the valve plate is prone to damage during repeated movements due to the disordered distribution of oil pipes connected to the clamping mechanism, which reduces the service life of the slide gate valve.

[0006] Therefore, there is an urgent need for a hydraulically operated open slide gate valve. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide a hydraulically operated open slide gate valve to solve the problems in the background art.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows.

[0009] A hydraulically operated open slide gate valve includes a cuboid valve body with an internal cavity, and a through valve chamber formed in the middle of the front and rear end faces of the valve body; a top roller guide assembly is provided on the top wall of the valve body, and a bottom roller guide assembly is provided on the bottom wall; a valve plate is slidably disposed between the top roller guide assembly and the bottom roller guide assembly; the valve plate includes a plate frame, and a first blind plate and a second blind plate are provided on the left side of the plate frame for closing the valve chamber; a blind plate clamping mechanism is connected between the first blind plate and the second blind plate; the plate frame... The right side of the frame is provided with a first through plate and a second through plate for opening the valve chamber. A through plate clamping mechanism is connected between the first through plate and the second through plate. Both the blind plate clamping mechanism and the through plate clamping mechanism are connected to the main oil inlet pipe and the main oil outlet pipe. The other end of the main oil inlet pipe and the main oil outlet pipe is connected to an oil source. A drag chain mechanism for protecting the oil pipe is provided on the top surface of the plate frame, and one end of the drag chain mechanism is connected to the valve body. A chain is provided on the bottom surface of the plate frame, and the chain is connected to a drive mechanism provided on the bottom surface of the valve body.

[0010] To further optimize the technical solution, two pairs of top roller guide groups are provided, with the two pairs of top roller guide groups located at the left and right ends of the top of the valve body cavity, respectively.

[0011] To further optimize the technical solution, two pairs of bottom roller guide groups are provided, with the two pairs of bottom roller guide groups located at the left and right ends of the bottom of the valve body cavity, respectively.

[0012] To further optimize the technical solution, sealing rings are provided on the edges of the first blind plate and the second blind plate, and sealing rings are provided on the edges of the first through plate and the second through plate.

[0013] The technical solution is further optimized. The blind plate clamping mechanism and the through plate clamping mechanism have the same structure. The blind plate clamping mechanism includes a connecting plate and a mounting block that are connected in pairs to the first blind plate and the second blind plate and extend outward. The corresponding mounting blocks are provided with hydraulic cylinders, and the hydraulic cylinders are connected in series through pipelines to form a closed flow path.

[0014] To further optimize the technical solution, the cable chain mechanism includes a cable chain plate horizontally disposed on the right side of the front end face of the plate frame, and a cable chain body with a length of one-quarter to one-half of the length of the plate frame is disposed on the cable chain plate; the left end of the cable chain body is connected to a cable chain bracket located above the plate frame and disposed on the same plane as the cable chain plate, the left end of the cable chain bracket is connected to the right side wall of the valve body, and the length of the cable chain bracket is one-quarter of the length of the plate frame.

[0015] To further optimize the technical solution, in the blind flange clamping mechanism, the cylinder located on the left side near the top frame of the plate frame is connected to the blind flange oil inlet pipe, and the cylinder located on the right side near the top frame of the plate frame is connected to the blind flange oil outlet pipe. The blind flange oil inlet pipe and the blind flange oil outlet pipe are respectively connected to the main oil inlet pipe and the main oil outlet pipe, and the main oil inlet pipe and the main oil outlet pipe are arranged side by side along the rear end face of the top frame of the plate frame and extend to the right. The main oil inlet pipe and the main oil outlet pipe extend to the right end of the plate frame and enter the cable chain body and exit from the end where the cable chain body is connected to the cable chain bracket. The main oil inlet pipe and the main oil outlet pipe extend along the cable chain bracket to the surface of the valve body and are connected to the oil source. The main oil inlet pipe and the main oil outlet pipe located on the rear end face of the right side of the plate frame are respectively connected to the oil inlet branch pipe and the oil outlet branch pipe, which are respectively connected to the two cylinders near the top frame of the plate frame in the through plate clamping mechanism.

[0016] To further optimize the technical solution, the drive mechanism includes a gear that meshes with a chain, and the gear is connected to an oil motor located at the bottom of the valve body.

[0017] To further optimize the technical solution, a limit switch is installed on the valve body to cooperate with the drive mechanism, and a trigger element is provided on the plate frame to trigger the operation of the limit switch.

[0018] The technological advancements achieved by this utility model are as follows, due to the adoption of the above technical solutions.

[0019] This utility model provides a hydraulically operated open slide gate valve. Through the movement of the slide frame, the positions of the blind plate and the through plate are switched to close or open the valve body. A drag chain mechanism is used to limit and protect the oil pipe section that needs to move with the slide frame, thereby extending the service life of the oil pipe and preventing adverse effects on the valve body movement. This utility model can extend the service life of the oil pipe, thus improving the service life of the valve body. It has the advantages of simple structure, convenience, practicality, and effective reduction of failure rate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a front view of the present invention; Figure 3 This is a partially enlarged view of the blind flange clamping mechanism of this utility model; Figure 4 This is a partially enlarged view of the drag chain mechanism of this utility model.

[0021] The components are as follows: 1. Valve body, 2. Top roller guide assembly, 3. Bottom roller guide assembly, 4. Plate frame, 5. First blind plate, 6. Second blind plate, 7. Blind plate clamping mechanism, 71. Connecting plate, 72. Mounting block, 8. First through plate, 9. Second through plate, 10. Through plate clamping mechanism, 11. Main oil inlet pipe, 12. Main oil outlet pipe, 13. Cable chain mechanism, 131. Cable chain plate, 132. Cable chain body, 133. Cable chain bracket, 14. Drive mechanism, 141. Chain, 142. Oil motor, 15. Valve plate, 16. Limit switch. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] A hydraulically operated open slide gate valve, combined with Figures 1 to 4 As shown, the system includes a valve body 1, a top roller guide assembly 2, a bottom roller guide assembly 3, a plate frame 4, a first blind plate 5, a second blind plate 6, a blind plate clamping mechanism 7, a first through plate 8, a second through plate 9, a through plate clamping mechanism 10, a main oil inlet pipe 11, a main oil outlet pipe 12, a cable chain mechanism 13, and a drive mechanism 14. The blind plate clamping mechanism 7 includes a connecting plate 71, a mounting block 72, and a hydraulic cylinder; the cable chain mechanism 13 includes a cable chain plate 131, a cable chain body 132, and a cable chain bracket 133; and the drive mechanism 14 includes a chain 141 and a hydraulic motor 142.

[0024] The valve body 1 is cuboid in shape, with an internal cavity. A through valve chamber is opened in the middle of the front and rear end faces of the valve body 1.

[0025] A top roller guide assembly 2 is provided on the top wall of the valve body 1, and a bottom roller guide assembly 3 is provided on the bottom wall. A valve plate 15 is slidably arranged between the top roller guide assembly 2 and the bottom roller guide assembly 3.

[0026] Two pairs of top roller guide groups 2 are provided, and the two pairs of top roller guide groups 2 are located at the left and right ends of the top of the inner cavity of the valve body 1, respectively.

[0027] Two pairs of bottom roller guide groups 3 are provided, with the two pairs of bottom roller guide groups 3 located at the left and right ends of the bottom of the valve body 1 cavity, respectively.

[0028] The valve plate 15 includes a plate frame 4. A first blind plate 5 and a second blind plate 6 for closing the valve chamber are provided on the left side of the plate frame 4. A blind plate clamping mechanism 7 is connected between the first blind plate 5 and the second blind plate 6. Sealing rings are provided on the edges of the first blind plate 5 and the second blind plate 6.

[0029] The right side of the plate frame 4 is provided with a first through plate 8 and a second through plate 9 for opening the valve chamber. The edges of the first through plate 8 and the second through plate 9 are provided with sealing rings. A through plate clamping mechanism 10 is connected between the first through plate 8 and the second through plate 9.

[0030] The blind flange clamping mechanism 7 and the through-plate clamping mechanism 10 have the same structure. The blind flange clamping mechanism 7 includes several pairs of connecting plates 71 and mounting blocks 72 that are connected to the first blind flange 5 and the second blind flange 6 and extend outward. Hydraulic cylinders are provided between the corresponding mounting blocks 72, and the hydraulic cylinders are connected in series through pipelines to form a closed flow path.

[0031] Both the blind plate clamping mechanism 7 and the through plate clamping mechanism 10 are connected to the main oil inlet pipe 11 and the main oil outlet pipe 12, and the other end of the main oil inlet pipe 11 and the main oil outlet pipe 12 is connected to an oil source.

[0032] A drag chain mechanism 13 for protecting the oil pipe is provided on the top surface of the plate frame 4, and one end of the drag chain mechanism 13 is connected to the valve body 1.

[0033] The cable chain mechanism 13 includes a cable chain plate 131 horizontally disposed on the right side of the front end face of the plate frame 4 to ensure that the cable chain body is placed horizontally. A cable chain body 132 with a length of one-quarter to one-half the length of the plate frame 4 is disposed on the cable chain plate 131. A cable chain bracket 133 is connected to the left end of the cable chain body 132. The cable chain bracket 133 is located above the plate frame 4 and is disposed on the same plane as the cable chain plate 131, so that the cable chain body can extend horizontally along with the cable chain bracket when the valve plate moves. The left end of the cable chain bracket 133 is connected to the right side wall of the valve body 1, and the length of the cable chain bracket 133 is one-quarter the length of the plate frame 4.

[0034] In the blind flange clamping mechanism 7, the cylinder located on the left side near the top frame of the plate frame 4 is connected to the blind flange oil inlet pipe, and the cylinder located on the right side near the top frame of the plate frame 4 is connected to the blind flange oil outlet pipe. These are connected to the main oil inlet pipe 11 and the main oil outlet pipe 12, respectively. The main oil inlet pipe 11 and the main oil outlet pipe 12 are arranged side by side along the rear end face of the top frame of the plate frame 4 and extend to the right. After extending to the right end of the plate frame 4, the main oil inlet pipe 11 and the main oil outlet pipe 12 enter the cable chain body 132 and exit from the end of the cable chain body 132 connected to the cable chain bracket 133. The main oil inlet pipe 11 and the main oil outlet pipe 12 extend along the cable chain bracket 133 to the surface of the valve body 1 and are connected to the oil source.

[0035] Oil valves are installed at the ends of the main oil inlet pipe 11 and the main oil outlet pipe 12 that are connected to the oil source, and several oil pumps are installed on the main oil inlet pipe 11 and the main oil outlet pipe 12 to ensure smooth oil flow. The controlled ends of the oil valves and oil pumps are connected to the main control unit, and the controlled ends of the drive mechanism, the blind plate clamping mechanism 7, and the through plate clamping mechanism 10 are all connected to the main control unit.

[0036] The main oil inlet pipe 11 and the main oil outlet pipe 12 located on the right rear end face of the plate frame 4 are respectively connected to the oil inlet branch pipe and the oil outlet branch pipe, which are respectively connected to the two oil cylinders in the through plate clamping mechanism 10 near the top frame of the plate frame 4.

[0037] A chain 141 is provided on the bottom surface of the plate frame 4, and the chain 141 is connected to a drive mechanism 14 provided on the bottom surface of the valve body 1. The drive mechanism 14 includes a gear that meshes with the chain 141, and the gear is connected to an oil motor 142 provided at the bottom of the valve body 1.

[0038] A limit switch 16 is installed on the valve body to cooperate with the drive mechanism. A trigger is provided on the plate frame to trigger the operation of the limit switch 16, and the limit switch is connected to the main control unit.

[0039] In practical use, the drive mechanism moves the plate frame within the cavity of the valve body, thus opening and closing the valve body. Before the drive mechanism operates, the blind plate clamping mechanism and the through plate clamping mechanism control cylinders to retract simultaneously. Then, the drive mechanism moves the plate frame. Once it reaches the desired position, the limit switch is triggered, and the blind plate clamping mechanism and the through plate clamping mechanism control cylinders to extend simultaneously, forming a sealing structure between the valve plate and the valve body. The principle is the same during resetting.

[0040] During the movement of the plate frame, the moving parts of the main oil outlet pipe and the main oil inlet pipe are protected within the cable chain body and move with the cable chain, increasing the service life of the main oil outlet pipe and the main oil inlet pipe.

Claims

1. A hydraulically operated open slide gate valve, characterized in that: The valve body (1) is a cuboid with an internal cavity. A through valve chamber is provided in the middle of the front and rear end faces of the valve body (1). A top roller guide group (2) is provided on the top wall of the valve body (1), and a bottom roller guide group (3) is provided on the bottom wall. A valve plate (15) is slidably arranged between the top roller guide group (2) and the bottom roller guide group (3). The valve plate (15) includes a plate frame (4). A first blind plate (5) and a second blind plate (6) for closing the valve chamber are provided on the left side of the plate frame (4). A blind plate clamping mechanism (7) is connected between the first blind plate (5) and the second blind plate (6). A first blind plate clamping mechanism (7) for opening the valve chamber is provided on the right side of the plate frame (4). A through plate (8) and a second through plate (9) are connected by a through plate clamping mechanism (10); the blind plate clamping mechanism (7) and the through plate clamping mechanism (10) are both connected to the main oil inlet pipe (11) and the main oil outlet pipe (12), and the other end of the main oil inlet pipe (11) and the main oil outlet pipe (12) are connected to an oil source; a drag chain mechanism (13) for protecting the oil pipe is provided on the top surface of the plate frame (4), and one end of the drag chain mechanism (13) is connected to the valve body (1); a chain (141) is provided on the bottom surface of the plate frame (4), and the chain (141) is connected to the drive mechanism (14) provided on the bottom surface of the valve body (1).

2. The hydraulically operated open slide gate valve according to claim 1, characterized in that: The top roller guide group (2) is provided in two pairs, and the two pairs of top roller guide groups (2) are located at the left and right ends of the top of the inner cavity of the valve body (1), respectively.

3. The hydraulically operated open slide gate valve according to claim 1, characterized in that: The bottom roller guide group (3) is provided in two pairs, and the two pairs of bottom roller guide groups (3) are located at the left and right ends of the bottom of the inner cavity of the valve body (1), respectively.

4. A hydraulically operated open slide gate valve according to claim 1, characterized in that: The edges of the first blind plate (5) and the second blind plate (6) are provided with sealing rings, and the edges of the first through plate (8) and the second through plate (9) are provided with sealing rings.

5. A hydraulically operated open slide gate valve according to claim 1, characterized in that: The blind plate clamping mechanism (7) and the through plate clamping mechanism (10) have the same structure. The blind plate clamping mechanism (7) includes a connecting plate (71) and a mounting block (72) that are connected in pairs to the first blind plate (5) and the second blind plate (6) and extend outward. The corresponding mounting blocks (72) are provided with oil cylinders, and the oil cylinders are connected in series through pipelines to form a closed flow path.

6. A hydraulically operated open slide gate valve according to claim 5, characterized in that: The cable chain mechanism (13) includes a cable chain plate (131) horizontally arranged on the right side of the front end face of the plate frame (4). The cable chain plate (131) is provided with a cable chain body (132) with a length of one-quarter to one-half of the length of the plate frame (4). The left end of the cable chain body (132) is connected to a cable chain bracket (133) located above the plate frame (4) and arranged on the same plane as the cable chain plate (131). The left end of the cable chain bracket (133) is connected to the right side wall of the valve body (1), and the length of the cable chain bracket (133) is one-quarter of the length of the plate frame (4).

7. A hydraulically operated open slide gate valve according to claim 6, characterized in that: In the blind flange clamping mechanism (7), the cylinder near the top frame of the plate frame (4) on the left side is connected to the blind flange oil inlet pipe, and the cylinder near the top frame of the plate frame (4) on the right side is connected to the blind flange oil outlet pipe. The blind flange oil inlet pipe and the blind flange oil outlet pipe are respectively connected to the main oil inlet pipe (11) and the main oil outlet pipe (12), and the main oil inlet pipe (11) and the main oil outlet pipe (12) are arranged side by side along the rear end face of the top frame of the plate frame (4) and extend to the right. The main oil inlet pipe (11) and the main oil outlet pipe (12) extend to the right end of the plate frame (4) and then enter the drag. The main oil inlet pipe (11) and the main oil outlet pipe (12) extend along the drag chain bracket (133) to the surface of the valve body (1) and then connect to the oil source. The main oil inlet pipe (11) and the main oil outlet pipe (12) located on the right rear end face of the plate frame (4) are respectively connected to the oil inlet branch pipe and the oil outlet branch pipe. The oil inlet branch pipe and the oil outlet branch pipe are respectively connected to the two oil cylinders in the through plate clamping mechanism (10) near the top frame of the plate frame (4).

8. A hydraulically operated open slide gate valve according to claim 1, characterized in that: The drive mechanism (14) includes a gear that meshes with a chain (141), and the gear is connected to an oil motor (142) located at the bottom of the valve body (1).

9. A hydraulically operated open slide gate valve according to claim 8, characterized in that: The valve body is equipped with a limit switch (16) for use with the drive mechanism, and the plate frame is provided with a trigger for triggering the operation of the limit switch (16).

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