Wear-resistant knife gate valve

Abstract

The utility model relates to a wear-resisting knife gate valve which comprises a gate body, a support plate is fixedly connected to the top of the gate body, an inner cavity of the gate body is communicated with an inner cavity of the support plate, a gate plate is movably connected to the bottom of the inner cavity of the support plate in a sleeved mode, a connector is fixedly connected to the top of the gate plate, and all the components are matched with one another to form the wear-resisting knife gate valve. After the gate plate is adjusted, the lower end of the inserting rod can be inserted into the adjacent inserting hole, so that the rotating disc is locked and cannot rotate, the problem that the gate valve is opened and closed accidentally due to the fact that the rotating disc is touched by mistake after the gate valve is operated and adjusted is solved, and the practicability of the device is improved; the clamping block is arranged on the fixing block in a sleeving mode, the push rod can be limited, the inserting rod cannot automatically descend and reset, and therefore the position of the inserting rod does not need to be fixed manually when the rotating disc is rotated, and the clamping block can automatically descend to enable the inserting block to be inserted into the inserting groove, so that the clamping block is not prone to falling off from the fixing block.

Description

Technical Field

[0001] The utility model relates to the technical field of gate valves, in particular to a wear-resistant knife gate valve. Background Art

[0002] Knife gate valve is also called knife gate valve. Its opening and closing parts are gate plates. The movement direction of the gate plates is perpendicular to the direction of the fluid. The medium is cut off by the blade-shaped gate plates that can cut fiber materials. There is actually no chamber in the gate body. The gate plates rise and fall in the side guide grooves and are pressed tightly against the valve seat by the lugs at the bottom. The sealing strips are set in the side guide grooves to form a seal with the end face of the gate plates to ensure the sealing of the knife gate valve.

[0003] The existing gate valve uses the rotation of the turntable to drive the gate plate to move up and down. After the staff operates and adjusts the gate valve, the turntable is easily touched by mistake, which will cause the valve stem to rotate, resulting in accidental opening and closing of the gate valve, affecting the normal use of the gate valve by the staff, thereby reducing the practicality of the gate valve. Utility Model Content

[0004] The purpose of the utility model is to provide a wear-resistant knife gate valve to solve the problems mentioned in the above background technology.

[0005] The technical solution of the utility model is a wear-resistant knife gate valve, comprising a gate body, the top of the gate body is fixedly connected with a bracket plate, the inner cavity of the gate body and the inner cavity of the bracket plate are communicated, the bottom of the inner cavity of the bracket plate is movably sleeved with a gate plate, the top of the gate plate is fixedly connected with a connecting head, a through hole is opened in the middle of the top of the bracket plate, a connecting sleeve is sleeved with a bearing in the through hole, a screw is sleeved with an inner thread of the connecting sleeve, the lower end surface of the screw is fixedly connected to the top surface of the connecting head, a turntable is fixedly sleeved on the upper end of the surface of the connecting sleeve, the left and right sides of the top surface of the turntable are fixedly connected with a turning handle, the left and right sides of the bottom surface of the turntable are fixedly connected with a locking mechanism, and the left and right sides of the top surface of the bracket plate are provided with jacks.

[0006] In one embodiment, the locking mechanism includes a connecting tube, the top surface of the connecting tube is fixedly connected to the edge of the bottom surface of the turntable, the bottom of the connecting tube is movably sleeved with an insertion rod, the two ends of the insertion rod respectively penetrate to the inner and outer sides of the bottom of the connecting tube, the lower end of the insertion rod is inserted into an adjacent insertion hole, the bottom of the inner cavity of the connecting tube is movably sleeved with a connecting block, the top surface of the insertion rod is fixedly connected to the middle part of the bottom surface of the connecting block, the top surface of the connecting block is fixedly connected to a spring, and the upper end of the spring is fixedly connected to the top surface of the inner wall of the connecting tube.

[0007] In one embodiment, a movable opening is provided on a side of the connecting tube away from the screw rod, a push rod is fixedly connected to a side of the connecting block away from the screw rod, and one end of the push rod is slidably connected in the movable opening and penetrates to the outside of the connecting tube.

[0008] In one embodiment, a fixing block is fixedly connected to the connecting tube at one side away from the screw rod and near the top, and a clamping block is movably sleeved on one end of the push rod surface away from the connecting block. A clamping slot is provided on the top of the clamping block, and the clamping slot is adapted to the fixing block.

[0009] In one embodiment, a slot is provided on the top of the fixing block, an inserting block is fixedly connected to the top of the card slot, and the inserting block matches the slot.

[0010] In one embodiment, a sealing strip is fixedly sleeved on the outer surface of the gate plate, and a wear-resistant coating is sprayed on the inner wall of the gate body. The sealing strip and the wear-resistant coating are both made of polyurethane.

[0011] In one embodiment, the front and rear sides of the gate body are fixedly connected with flanges, and bolts are installed on the flanges.

[0012] The beneficial effects provided by the utility model are:

[0013] Through the cooperation between various components, after the gate plate is adjusted, the lower end of the plug rod can be inserted into the adjacent socket, thereby locking the turntable and preventing the turntable from rotating, thereby avoiding the problem of accidental opening and closing of the gate valve due to accidental contact of the turntable after the gate valve operation and adjustment, thereby increasing the practicality of the device. After the plug rod is pulled out of the socket, the card block is sleeved on the fixed block, which can restrict the push rod and prevent the plug rod from automatically descending and resetting. Therefore, there is no need to manually fix the position of the plug rod when rotating the turntable, and the card block will automatically descend to insert the plug block into the slot, so that the card block will not fall off from the fixed block easily. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the front view of the utility model;

[0015] Figure 2 It is the main cross-sectional view of the utility model;

[0016] Figure 3 for Figure 2 A magnified view of the structure at center A;

[0017] Figure 4 It is a side view of the utility model;

[0018] Figure 5 It is an enlarged side view of the locking mechanism.

[0019] In the attached drawings, 1, gate body; 2, bracket plate; 3, gate plate; 4, connector; 5, connecting sleeve; 6, screw; 7, turntable; 71, turn handle; 8, locking mechanism; 81, connecting pipe; 82, plug rod; 83, connecting block; 84, spring; 85, movable opening; 86, push rod; 87, fixing block; 88, clamping block; 89, clamping groove; 810, slot; 811, plug block; 9, jack; 10, sealing strip; 11, wear-resistant coating; 12, flange; 13, bolt. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The technical solution of the present invention will be further described below in conjunction with the drawings of the embodiments of the present invention, and the present invention is not limited to the following specific implementation methods.

[0021] It should be understood that the same or similar numbers in the drawings of the embodiments correspond to the same or similar parts. In the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom" and the like indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0022] In one embodiment, Figure 1-5 As shown, a wear-resistant knife gate valve comprises a gate body 1, a support plate 2 is fixedly connected to the top of the gate body 1, the inner cavity of the gate body 1 is connected to the inner cavity of the support plate 2, a gate plate 3 is movably sleeved on the bottom of the inner cavity of the support plate 2, a connector 4 is fixedly connected to the top of the gate plate 3, a through hole is opened in the middle of the top of the support plate 2, a connecting sleeve 5 is sleeved on the bearing in the through hole, a screw 6 is sleeved on the inner thread of the connecting sleeve 5, the lower end surface of the screw 6 is fixedly connected to the top surface of the connector 4, a turntable 7 is fixedly sleeved on the upper end of the surface of the connecting sleeve 5, a turntable 7 is fixedly sleeved on the left and right sides of the top surface of the turntable 7, a locking mechanism 8 is fixedly connected on the left and right sides of the bottom surface of the turntable 7, and a socket 9 is opened on the left and right sides of the top surface of the support plate 2.

[0023] In order to lock the turntable 7 so that the turntable 7 does not rotate due to accidental contact, the locking mechanism 8 includes a connecting tube 81, the top surface of the connecting tube 81 is fixedly connected to the edge of the bottom surface of the turntable 7, the bottom of the connecting tube 81 is movably sleeved with an insertion rod 82, the two ends of the insertion rod 82 respectively penetrate the inner and outer sides of the bottom of the connecting tube 81, the lower end of the insertion rod 82 is inserted into the adjacent insertion hole 9, the bottom of the inner cavity of the connecting tube 81 is movably sleeved with a connecting block 83, the top surface of the insertion rod 82 is fixedly connected to the middle part of the bottom surface of the connecting block 83, the top surface of the connecting block 83 is fixedly connected to a spring 84, and the upper end of the spring 84 is fixedly connected to the top surface of the inner wall of the connecting tube 81.

[0024] In order to facilitate pushing the insertion rod 82 upward and pulling it out of the socket 9, a movable opening 85 is opened on the side of the connecting tube 81 away from the screw rod 6, and a push rod 86 is fixedly connected to the side of the connecting block 83 away from the screw rod 6. One end of the push rod 86 is slidably connected in the movable opening 85 and passes through the outside of the connecting tube 81.

[0025] In order to limit the downward movement of the push rod 86 after the insertion rod 82 is pulled out of the insertion hole 9, so that there is no need to manually fix the position of the insertion rod 82 that has been pushed upward when the turntable 7 is rotated, a fixing block 87 is fixedly connected to the side of the connecting tube 81 away from the screw rod 6 and near the top, and a clamping block 88 is movably sleeved on the end of the surface of the push rod 86 away from the connecting block 83, and a clamping groove 89 is opened on the top of the clamping block 88, and the clamping groove 89 is adapted to the fixing block 87.

[0026] In order to prevent the block 88 from easily falling off the fixed block 87 when the turntable 7 rotates, a slot 810 is provided on the top of the fixed block 87, and an insert block 811 is fixedly connected to the top of the slot 89. The insert block 811 cooperates with the slot 810. When the block 88 is sleeved on the fixed block 87, the elastic potential energy of the spring 84 can make the insert block 811 in the slot 89 firmly inserted into the slot 810 on the fixed block 87.

[0027] In order to improve the sealing effect of the gate plate 3 and improve the wear resistance of the inner cavity of the gate body 1 and the gate plate 3, a sealing strip 10 is fixedly sleeved on the outer surface of the gate plate 3, and a wear-resistant coating 11 is sprayed on the inner wall of the gate body 1. The sealing strip 10 and the wear-resistant coating 11 are both made of polyurethane.

[0028] In order to facilitate the installation of the gate body 1 on the pipeline, the front and rear sides of the gate body 1 are fixedly connected with flanges 12 , and bolts 13 are installed on the flanges 12 .

[0029] Working principle: When the utility model is used, first push the push rod 86 upward to move the connecting block 83 upward, and the connecting block 83 drives the plug rod 82 to rise, so that the plug rod 82 is pulled out of the insertion hole 9, and the rotation of the turntable 7 is released. At this time, the card slot 89 on the card block 88 is aligned with the fixed block 87, and the card block 88 is pushed to move toward the connecting pipe 81, so that the card block 88 is sleeved on the fixed block 87, thereby restricting the push rod 86, so that the plug rod 82 cannot automatically descend and reset, then release the card block 88, the card block 88 will automatically descend to make the plug block 811 inserted in the slot 810, so that the card block 88 will not easily fall off from the fixed block 87, then twist the handle 71 to rotate the turntable 7, the turntable 7 drives the connecting sleeve 5 to rotate, the connecting sleeve 5 rotates so that the screw rod 6 can move up and down, and the screw The rod 6 drives the connecting head 4 to move up and down, and the connecting head 4 drives the gate plate 3 to move up and down, thereby opening and closing the gate valve. After the gate plate 3 is adjusted, first push the block 88 upward to pull the plug block 811 out of the slot 810, and then move the block 88 in the direction away from the connecting pipe 81 to disengage the block 88 from the fixed block 87, thereby releasing the restriction on the push rod 86. At this time, the elastic potential energy of the spring 84 will push the connecting block 83 downward, and the connecting block 83 drives the plug rod 82 to descend, so that the lower end of the plug rod 82 is inserted into the adjacent socket 9, thereby locking the turntable 7 and making it unable to rotate, thereby avoiding the problem of accidental opening and closing of the gate valve due to accidental contact of the turntable 7 after the gate valve operation is adjusted, thereby increasing the practicality of the device and reducing the limitations of the device.

[0030] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0031] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A wear-resistant knife gate valve, characterized in that: It includes a gate body, the top of which is fixedly connected to a bracket plate, the inner cavity of the gate body and the inner cavity of the bracket plate are communicated, the bottom of the inner cavity of the bracket plate is movably sleeved with a gate plate, the top of the gate plate is fixedly connected to a connecting head, a through hole is opened in the middle of the top of the bracket plate, a connecting sleeve is sleeved with a bearing in the through hole, a screw is sleeved with a thread in the connecting sleeve, the lower end surface of the screw is fixedly connected to the top surface of the connecting head, a turntable is fixedly sleeved on the upper end of the surface of the connecting sleeve, the left and right sides of the top surface of the turntable are fixedly connected with a turning handle, the left and right sides of the bottom surface of the turntable are fixedly connected with a locking mechanism, and the left and right sides of the top surface of the bracket plate are provided with sockets.

2. A wear-resistant knife gate valve according to claim 1, characterized in that: The locking mechanism includes a connecting tube, the top surface of the connecting tube is fixedly connected to the edge of the bottom surface of the turntable, the bottom of the connecting tube is movably sleeved with an insertion rod, the two ends of the insertion rod respectively penetrate the inner and outer sides of the bottom of the connecting tube, the lower end of the insertion rod is inserted into an adjacent insertion hole, the bottom of the inner cavity of the connecting tube is movably sleeved with a connecting block, the top surface of the insertion rod is fixedly connected to the middle part of the bottom surface of the connecting block, the top surface of the connecting block is fixedly connected to a spring, and the upper end of the spring is fixedly connected to the top surface of the inner wall of the connecting tube.

3. A wear-resistant knife gate valve according to claim 2, characterized in that: A movable opening is provided on one side of the connecting pipe away from the screw rod, a push rod is fixedly connected to one side of the connecting block away from the screw rod, and one end of the push rod is slidably connected in the movable opening and penetrates to the outside of the connecting pipe.

4. A wear-resistant knife gate valve according to claim 3, characterized in that: A fixing block is fixedly connected to one side of the connecting tube away from the screw rod and near the top, and a clamping block is movably sleeved on one end of the push rod surface away from the connecting block. A clamping slot is provided on the top of the clamping block, and the clamping slot is adapted to the fixing block.

5. A wear-resistant knife gate valve according to claim 4, characterized in that: A slot is provided on the top of the fixing block, an inserting block is fixedly connected to the top of the card slot, and the inserting block matches the slot.

6. A wear-resistant knife gate valve according to claim 1, characterized in that: A sealing strip is fixedly sleeved on the outer surface of the gate plate, and a wear-resistant coating is sprayed on the inner wall of the gate body. Both the sealing strip and the wear-resistant coating are made of polyurethane.

7. A wear-resistant knife gate valve according to claim 1, characterized in that: The front and rear sides of the gate body are both fixedly connected with flanges, and bolts are installed on the flanges.

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