Double-sealing gate valve

Abstract

The utility model relates to the technical field of gate valves, and discloses a double-sealed gate valve which comprises a valve body, a push cylinder is fixedly installed at the top of the valve body, material ports are formed in the front side and the rear side of the valve body, a rectangular plate is arranged in the valve body, and a center rod is fixedly installed between the upper side of the rectangular plate and the output end of the push cylinder. The front side and the rear side of the rectangular plate are each provided with a gate plate used for blocking and connecting a material opening, a pair of linkage rods are rotationally installed at the four corners of the rectangular plate, each pair of linkage rods are distributed in an inverted V shape, the ends, away from the rectangular plate, of the linkage rods are rotationally assembled with the gate plates, and guide assemblies are arranged between the left side and the right side in the valve body and the gate plates. When the rectangular plate ascends, the treatment chambers on the two sides are communicated, when the rectangular plate descends, the flashboards on the two sides seal the material ports at the same time, only one double-face sealing gate valve needs to be installed between every two adjacent treatment chambers, the arrangement number of the gate valves can be reduced, the sealing performance and the heat insulation effect are better, and operation is safe.

Description

Technical Field

[0001] The utility model relates to the technical field of gate valves, in particular to a double-sided sealing gate valve. Background Art

[0002] A gate valve is a valve that opens and closes by moving the opening and closing member (gate) in a direction perpendicular to the medium flow direction (channel axis).

[0003] In order to improve production efficiency, the conveyor will be used in conjunction with multiple continuous processing chambers (for example, multiple vacuum heat treatments) so that the materials can be processed in sequence. However, the valves currently used only have one liftable gate plate, and two gate valves are required between two adjacent processing chambers. Not only are the number of gate valves large, but the sealing and thermal insulation properties of the gate plates are also low, which cannot meet the use requirements of the processing chambers.

[0004] Therefore, in order to solve the above problems, a double-sided sealing gate valve is proposed. Utility Model Content

[0005] The utility model aims to provide a double-sided sealing gate valve, which can simultaneously block material ports on both sides when closed, has a small number of settings and good sealing and temperature insulation effects, thereby solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a double-sided sealed gate valve, including a valve body, a push cylinder is fixedly installed on the top of the valve body, material ports are opened on the front and rear sides of the valve body, a rectangular plate is arranged inside the valve body, a center rod is fixedly installed between the upper side of the rectangular plate and the output end of the push cylinder, gate plates for blocking the material ports are arranged on the front and rear sides of the rectangular plate, a pair of linkage rods are rotatably installed at the four corners of the rectangular plate, each pair of linkage rods is distributed in an inverted V shape, the ends of the linkage rods away from the rectangular plate are rotatably assembled with the gate plates, and guide components are respectively arranged between the left and right sides of the inside of the valve body and the gate plates.

[0007] Specifically, a receiving groove is provided on the side of the gate plates that are away from each other, and a graphite plate is installed in the receiving groove, and the size of the graphite plate is larger than the material port.

[0008] Specifically, water cooling pipes are fixedly installed on the sides of the gate plates that are close to each other, and the water cooling pipes are continuously distributed in an S shape.

[0009] Specifically, the guide assembly includes an inverted T-shaped plate and a guide wheel. The inverted T-shaped plates are fixedly installed on the left and right sides of the valve body. The front and rear sides of the inverted T-shaped plate are provided with L-shaped tracks with smooth transitions. Guide wheels are rotatably installed on the left and right sides of the gate plate, and the guide wheels run on the L-shaped tracks.

[0010] Specifically, the bottoms of both left and rear sides of the valve body are connected and installed with bearing seats, and the same roller is rotatably installed between the bearing seats, and the top of the roller is at least 2 mm higher than the bottom of the material port.

[0011] Furthermore, a friction plate is fixedly mounted on the lower side of the gate plate via a spring plate, and the friction plate abuts against the circumferential side of the roller when in use.

[0012] Specifically, the valve body includes a cylinder, a flange and a box body, both ends of the cylinder are fixedly installed with flanges, the upper side of the cylinder is connected to the box body, and the upper side of the box body is fixedly installed with a box cover.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] When the rectangular plate is raised, the processing chambers on both sides are connected, and when the rectangular plate is lowered, the gate plates on both sides simultaneously close the material ports. Only one double-sided sealing gate valve is installed between two adjacent processing chambers, which can reduce the number of gate valves installed.

[0015] When the gate is closed, it is tightly pressed against the material outlet, which provides better sealing performance. Graphite plates and water-cooling pipes are also provided on the gate to improve the thermal insulation effect, and can brake the rollers connected to the conveyor, making the operation safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic three-dimensional diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic three-dimensional diagram of the structure inside the valve body of the utility model;

[0018] Figure 3 It is a schematic three-dimensional diagram of the structure of the rectangular plate of the utility model.

[0019] In the figure: 1 center rod, 2 gate plate, 3 water cooling pipe, 4 guide wheel, 5 roller, 6 friction plate, 7 spring plate, 8 linkage rod, 9 rectangular plate, 10 graphite plate, 11 inverted T-shaped plate, 12 bearing seat, 13 material port, 14 flange, 15 box body, 16 box cover, 17 push cylinder, 18 cylinder body. DETAILED DESCRIPTION

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

[0021] See also Figure 1 , Figure 2 and Figure 3 The utility model provides a double-sided sealing gate valve, including a valve body, a push cylinder 17 is fixedly installed on the top of the valve body, and the push cylinder 17 can be selected from electric cylinders, air cylinders or hydraulic cylinders according to workshop conditions, which will not affect the realization of the lifting action here; material ports 13 are opened on the front and back sides of the valve body, and the material ports 13 are used to pass materials on the conveyor. In order to facilitate the passage of materials of various shapes, the shape of the material port 13 is preferably a rectangular port; a rectangular plate 9 is arranged inside the valve body, and a center rod 1 is fixedly installed between the upper side of the rectangular plate 9 and the output end of the push cylinder 17, so that the push cylinder 17 can drive the rectangular plate 9 to perform lifting actions through the center rod 1.

[0022] The front and rear sides of the rectangular plate 9 are both provided with gate plates 2 for blocking the material opening 13. A pair of linkage rods 8 are rotatably installed at the four corners of the rectangular plate 9. Each pair of linkage rods 8 is distributed in an inverted V shape. The linkage rods 8 are far away from the rectangular plate 9, and the ends are respectively rotatably assembled with the gate plates 2. The left and right sides of the valve body are respectively provided with guide components between the gate plates 2. The guide components are used to quote and limit the distance between the gate plates 2 (that is, the gate plates 2 are close to each other when they move up, and they are far away from each other when they move down); each gate plate 2 is connected to the rectangular plate 9 by four linkage rods 8, and the positional relationship between the gate plates 2 and the rectangular plate 9 can always be maintained in parallel. When the rectangular plate 9 rises, the gate plates 2 on both sides will reduce the angle between each pair of linkage rods 8 due to their own weight, and gradually approach each other after being guided by the guide components, and the blocking of the material opening 13 is released; on the contrary, when the rectangular plate 9 descends, the gate plates 2 on both sides are gradually away from each other after being guided by the guide components. At this time, the angle between each pair of linkage rods 8 increases, and the blocking of the material opening 13 is completed when it reaches the lowest position.

[0023] A receiving groove is provided on the side of the gate plates 2 away from each other, and a graphite plate 10 is installed in the receiving groove. The graphite material of the graphite plate 10 has better high temperature resistance, which is conducive to the temperature insulation working condition, and the size of the graphite plate 10 is larger than the material port 13 to ensure the effective area.

[0024] A water cooling pipe 3 is fixedly installed on the side where the gate plates 2 are close to each other, and the water cooling pipe 3 is continuously distributed in an S shape; when in use, the water cooling pipe 3 is connected with an external water supply system (mainly including a water pump and a cooling box), and cooling water can be continuously passed into the water cooling pipe 3 to cool the gate plates 2 and the graphite plate 10 to avoid excessive temperature and ensure the thermal insulation effect.

[0025] like Figure 2As shown, the guide assembly includes an inverted T-shaped plate 11 and a guide wheel 4. The inverted T-shaped plates 11 are fixedly installed on the left and right sides of the inside of the valve body. The inverted T-shaped plates 11 are vertically arranged. The front and rear sides of the inverted T-shaped plates 11 are provided with L-shaped tracks with smooth transitions. The guide wheels 4 are rotatably installed on the left and right sides of the gate plate 2, and the guide wheels 4 run on the L-shaped tracks. When the gate plate 2 is raised or lowered, the guide wheels 4 can run along the L-shaped tracks, thereby guiding the rectangle between the gate plates 2. When the gate plate 2 moves to the lowermost position, the inverted T-shaped plate 11 also has a limiting function.

[0026] Because the inside of the valve body has a certain width, in order to improve the smoothness of material passing through, the bottom of the left and rear sides of the valve body are connected and installed with bearing seats 12, and the same roller 5 is rotatably installed between the bearing seats 12, and the top of the roller 5 is at least 2 mm higher than the bottom of the material opening 13; the roller 5 is used to support the passing material. In addition, the end of the roller 5 can also form a synchronously rotating whole with the conveyor through structures such as sprockets and chains, so that the roller 5 also has conveying power, further improving the smoothness of material passing through.

[0027] In order to improve the operation safety of the conveyor and the gate 2, the friction plate 6 is fixedly installed on the lower side of the gate 2 through the spring plate 7. The spring plate 7 enables the friction plate 6 to have a downward swinging force. The friction plate 6 is in contact with the circumferential side of the roller 5 when in use; when the gate 2 moves up, the friction plate 6 swings close to each other and resets, and separates from the roller 5. At this time, the roller 5 can still rotate with the conveyor to transport the material. When the gate 2 moves down, the friction plate 6 is tightly pressed against the roller 5. The increased friction force is used to limit the rotation of the roller 5, avoiding the material from still moving on the conveyor when the gate 2 blocks the material opening 13.

[0028] Specifically, the valve body includes a cylinder 18, a flange 14 and a box 15. The flanges 14 are fixedly installed at both ends of the cylinder 18. The upper side of the cylinder 18 is connected to the box 15, and the upper side of the box 15 is fixedly installed with a box cover 16. The push cylinder 17 is fixedly installed on the upper side of the box cover 16, the inverted T-shaped plate 11 is fixedly installed on both sides of the inside of the box 15, the bearing seat 12 is located at the bottom of the left and right sides of the cylinder 18, and the gate plate 2 enters the box 15 when it is in the upper position, and enters the cylinder 18 when the gate plate 2 is in the lower position.

[0029] The working principle of this embodiment:

[0030] During installation, the valve body is connected and installed with the processing chamber through the flanges 14 on both sides, and the roller 5 is connected and assembled with the conveyor.

[0031] During use, the materials enter each processing chamber in turn along the conveyor. A sealed environment is required when the processing chamber processes the materials. At this time, it is necessary to first control the push cylinder 17 to move the rectangular plate 9 downward through the center rod 1, and the guide wheels 4 on the gate plates 2 on both sides move along the L-shaped track. After the gate plates 2 on both sides move away from each other, they are tightly blocked on the material port 13. At the same time, the friction plate 6 is pressed against the roller 5, and the increased friction force is used to limit the rotation of the roller 5. In addition, after the cooling water is passed into the water-cooling pipe 3, the gate plate 2 and the graphite plate 10 can be cooled to ensure the thermal insulation effect.

[0032] When the material needs to be transferred to the next processing chamber, the push cylinder 17 is controlled to move the rectangular plate 9 upward through the center rod 1, and the gate plates 2 on both sides approach each other and are lifted. At this time, the friction plate 6 is separated from the roller 5, and the material can pass through the material port 13.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A double-sided sealing gate valve, comprising a valve body, a push cylinder (17) being fixedly mounted on the top of the valve body, characterized in that: The valve body is provided with material ports (13) on both the front and rear sides. A rectangular plate (9) is provided inside the valve body. A center rod (1) is fixedly installed between the upper side of the rectangular plate (9) and the output end of the push cylinder (17). Gate plates (2) for blocking the material ports (13) are provided on both the front and rear sides of the rectangular plate (9). A pair of linkage rods (8) are rotatably installed at the four corners of the rectangular plate (9). Each pair of linkage rods (8) is arranged in an inverted V-shape. The ends of the linkage rods (8) away from the rectangular plate (9) are rotatably assembled with the gate plates (2). Guide components are provided between the left and right sides of the valve body and the gate plates (2).

2. The double-sided sealing gate valve according to claim 1, characterized in that: The gate plates (2) are each provided with a receiving groove on one side away from the other, a graphite plate (10) is installed in the receiving groove, and the size of the graphite plate (10) is larger than the material opening (13).

3. The double-sided sealing gate valve according to claim 1, characterized in that: A water cooling pipe (3) is fixedly installed on the side of the gate plates (2) that are close to each other, and the water cooling pipe (3) is continuously distributed in an S shape.

4. The double-sided sealing gate valve according to claim 1, characterized in that: The guide assembly comprises an inverted T-shaped plate (11) and a guide wheel (4); the inverted T-shaped plate (11) is fixedly mounted on both left and right sides of the valve body; the front and rear sides of the inverted T-shaped plate (11) are provided with L-shaped tracks with smooth transitions; the left and right sides of the gate plate (2) are rotatably mounted with guide wheels (4); the guide wheels (4) travel on the L-shaped tracks.

5. The double-sided sealing gate valve according to claim 1, characterized in that: The bottoms of the left and rear sides of the valve body are both connected and installed with bearing seats (12), and a same roller (5) is rotatably installed between the bearing seats (12), and the top of the roller (5) is at least 2 mm higher than the bottom of the material port (13).

6. The double-sided sealing gate valve according to claim 5, characterized in that: A friction plate (6) is fixedly mounted on the lower side of each gate plate (2) via a spring plate (7); the friction plate (6) abuts against the circumferential side of the rotating roller (5) when in use.

7. The double-sided sealing gate valve according to claim 1, characterized in that: The valve body comprises a cylinder (18), a flange (14) and a box (15); the flanges (14) are fixedly mounted on both ends of the cylinder (18); the box (15) is connected to the upper side of the cylinder (18); and a box cover (16) is fixedly mounted on the upper side of the box (15).

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