Vertical gate valve driven by worm

Abstract

The utility model discloses a worm-driven vertical gate valve which comprises a fixed valve body arranged in a lower frame of a valve body, and a valve plate and a movable valve seat are arranged on the fixed valve body; the device is characterized in that an upper valve body frame is arranged above the lower valve body frame, a valve body cross beam is arranged at the top end of the upper valve body frame, a lifting device is arranged at the side end of the lower valve body frame, a walking plate electric fitting is arranged at the side end of the lifting device, a steel wire rope is arranged between the lifting device and the valve plate, and the end of the steel wire rope is connected to the top end of the valve plate; a worm assembly is arranged on a clamping point of the movable valve seat, and a clamping electric device is arranged on the lower frame of the valve body. The gate valve adopts a frame structure formed by welding beam section steel, is simple in structure, simple in welding and light in weight, saves the cost of a running board turbine box as the running board electric fitting and the lifting device are connected by adopting the pinion, is convenient to install as the steel wire rope is matched with the fixed pulley for transmission, and reduces the cost of the gate valve.

Description

Technical Field

[0001] This utility model relates to the field of slide gate valve technology, and more specifically to a vertical slide gate valve with worm gear drive. Background Technology

[0002] A vertical slide gate valve controls the flow of media in a pipeline by raising and lowering a gate. The valve mainly consists of a valve body, valve seat, slide gate, and sealing mechanism. A guide rail is installed inside the valve body, within which the slide gate can slide up and down. When the slide gate rises, the media can flow freely through the valve; when the slide gate descends, it fits tightly against the valve seat, cutting off the media's passage. Simultaneously, due to the pressure difference, a good seal is formed between the slide gate and the valve seat, preventing media leakage.

[0003] The existing vertical slide gate valves have the following problems during use: 1) The valve body frame structure of the existing vertical slide gate valve is complex, difficult to weld, complicated in process, heavy, and costly; 2) The slide gate valve uses chain or screw drive, and the screw is expensive to process; and when the chain tension is not high, it is easy to cause tooth skipping; 3) The slide gate valve uses a wire rope to move the slide plate, which uses a double drum and double motor, and uses a combination of fixed pulleys and moving pulleys. The use of multiple pulley groups results in slow lifting speed, increased wire rope length, increased cost, and inconvenient installation; 4) The clamping of the existing vertical slide gate valve uses a toothed ring or chain drive, and the large toothed ring is complicated to process and relatively expensive. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a vertical slide gate valve with worm gear drive, so as to solve the problems in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows.

[0006] A worm gear driven vertical slide gate valve includes a fixed valve body disposed within a lower valve body frame, a valve plate for opening and closing the valve body, and a movable valve seat for clamping and releasing the valve plate; characterized in that: a valve body upper frame is disposed above the lower valve body frame, a valve body crossbeam is disposed at the top of the upper valve body frame, a lifting device for moving the valve plate up and down is disposed at the side end of the lower valve body frame, a sliding plate electric device for driving the lifting device is disposed at the side end of the lifting device, a steel wire rope for moving the valve plate up and down is disposed between the lifting device and the valve plate, and the end of the steel wire rope is connected to the top of the valve plate; a worm gear assembly is disposed at the clamping point of the movable valve seat, and a clamping electric device is disposed on the lower valve body frame for driving the worm gear assembly to realize the clamping and releasing of the movable valve seat.

[0007] To further optimize the technical solution, the lifting device includes a drum box mounted on the lower frame of the valve body and a transmission box mounted on the outside of the drum box. A wire rope drum for winding the wire rope is mounted inside the drum box via a rotating shaft. A large gear is mounted on the rotating shaft outside the drum box. A small gear that meshes with the large gear is mounted inside the transmission box. The walkway is connected to the rotating shaft of the small gear.

[0008] To further optimize the technical solution, fixed pulleys for guiding the wire rope are provided on both the valve body frame and the valve body crossbeam.

[0009] To further optimize the technical solution, two worm gear assemblies are respectively provided on the upper and lower sides of the movable valve seat, and a first bevel gear box and a second bevel gear box are respectively provided on the upper and lower sides of the lower frame of the valve body for driving the corresponding side worm gear assemblies. A coupling is provided between the first bevel gear box and the second bevel gear box, and the clamping electric device is connected to the rotating shaft of the first bevel gear box.

[0010] The technical solution was further optimized, with the two worm gear assemblies on the same side connected by a spline universal coupling.

[0011] To further optimize the technical solution, the worm gear assembly includes a lead screw that meshes with a spline universal coupling via a gear set. A lead screw nut is sleeved on the lead screw and connected to a movable valve seat. A bellows is provided between the movable valve seat and the fixed valve body to follow the movement of the movable valve seat.

[0012] Due to the adoption of the above technical solutions, the technological progress achieved by this utility model is as follows.

[0013] This utility model provides a vertical slide gate valve with worm gear drive, which adopts a frame structure welded from beam steel. The structure is simple, the welding is simple, and the weight is light. Furthermore, the slide gate motor and the lifting device are connected by a small gear, which saves the cost of the slide gate turbine box. At the same time, the use of wire rope and fixed pulley drive makes installation convenient and reduces the cost of the slide gate valve. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a side view of the present invention;

[0016] Figure 3 This is a top view of the present invention;

[0017] Figure 4 This is a schematic diagram of the internal structure of the present invention;

[0018] Figure 5 This is a schematic diagram of the lifting device of this utility model.

[0019] The components are: 1. Fixed valve body, 2. Lifting device, 3. Electrically mounted walkway, 4. Wire rope, 5. Valve plate, 6. Fixed pulley, 7. Second bevel gearbox, 8. Worm gear assembly, 9. First bevel gearbox, 10. Clamping electric device, 11. Movable valve seat, 12. Lower frame of valve body, 13. Upper frame of valve body, 14. Valve body crossbeam, 15. Drum box, 16. Transmission box, 17. Wire rope drum, 18. Rotary shaft, 19. Large gear, 20. Small gear, 21. Splined universal coupling, 22. Bellows, 23. Lead screw, 24. Lead nut. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] A worm gear driven vertical slide gate valve, combined with Figures 1 to 5 As shown, the valve body includes a fixed valve body 1 disposed within the lower frame 12 of the valve body. The fixed valve body 1 is provided with a valve plate 5 and a movable valve seat 11. The valve plate 5 is used to open and close the valve body, and the movable valve seat 11 is used to clamp and release the valve plate.

[0022] A valve body upper frame 13 is provided above the lower valve body frame 12. A valve body crossbeam 14 is provided at the top of the upper valve body frame 13. A lifting device 2 is provided on the side of the lower valve body frame 12 to drive the valve plate 5 to move up and down. A sliding plate electric actuator 3 is provided on the side of the lifting device 2 to drive the lifting device. A steel wire rope 4 is provided between the lifting device 2 and the valve plate 5. The end of the steel wire rope 4 is connected to the top of the valve plate 5 to drive the valve plate to move up and down. The steel wire rope material is readily available, low in cost, and easy to install.

[0023] The lifting device 2 includes a drum box 15 and a transmission box 16. The drum box 15 is mounted on the lower frame 12 of the valve body. Inside the drum box 15, a wire rope drum 17 is mounted via a rotating shaft 18 for winding the wire rope 4. A large gear 19 is mounted on the rotating shaft 18 on the outside of the drum box 15. The transmission box 16 is located on the outside of the drum box. Inside the transmission box 16, a small gear 20 is mounted, which meshes with the large gear. The walk plate electric actuator 3 is connected to the rotating shaft of the small gear 20. The walk plate electric actuator drives the small gear to rotate. When the small gear rotates, it drives the large gear meshing with it to rotate. The rotation of the large gear drives the wire rope drum to rotate, realizing the unwinding and rewinding of the wire rope, thereby realizing the up and down movement of the valve plate. Furthermore, the lifting device consists of large and small gears and a wire rope drum, which is easy to process and has a smooth transmission. The drum box is welded to the lower frame of the valve body, and the walkway is directly connected to the small gear, driving the large gear and the wire rope drum to rotate. This eliminates the need for the intermediate transmission link using a worm gear box, resulting in a simple structure, easy installation, and low cost.

[0024] Fixed pulleys 6 are installed on both the valve body upper frame 13 and the valve body crossbeam 14 to guide the wire rope. There are three sets of fixed pulleys 6, two sets on the valve body crossbeam and one set on the valve body upper frame, which is convenient and simple to install and saves costs.

[0025] A worm gear assembly 8 is provided at the clamping point of the movable valve seat 11, and a clamping electric device 10 is provided on the lower frame 12 of the valve body to drive the worm gear assembly to achieve the clamping and release of the movable valve seat.

[0026] Two worm gear assemblies 8 are respectively provided on the upper and lower sides of the movable valve seat 11. The worm gear assemblies 8 on the same side are connected by a spline universal coupling 21 to realize the linkage of the worm gear assemblies. The lower frame 12 of the valve body is provided with a first bevel gear box 9 and a second bevel gear box 7 on the upper and lower sides respectively. The first bevel gear box 9 and the second bevel gear box 7 are respectively connected to the upper worm gear assembly and the lower worm gear assembly to drive the worm gear assembly on the corresponding side to move. A coupling is provided between the first bevel gear box 9 and the second bevel gear box 7. The clamping electric device 10 is connected to the rotating shaft of the first bevel gear box 9. The clamping electric device drives the first bevel gear box to rotate. Under the action of the coupling, the second bevel gear box also rotates, driving the worm gear assemblies on the upper and lower sides of the movable valve seat to rotate, realizing the clamping and releasing of the movable valve seat.

[0027] The worm gear assembly 8 includes a lead screw 23 that meshes with the spline universal coupling 21 via a gear set. A lead screw nut 24 is sleeved on the lead screw 23 and is connected to the movable valve seat 11. A bellows 22 is provided between the movable valve seat and the fixed valve body. When the first bevel gear box 9 and the second bevel gear box 7 rotate, they drive the lead screw to rotate. The rotation of the lead screw causes the lead screw nut on the lead screw to slide along the lead screw, which in turn drives the movable valve seat to move left and right along the fixed valve body. The bellows on the movable valve seat moves with the movable valve seat, thereby realizing the clamping and release of the valve plate by the movable valve seat.

[0028] When this utility model is in use, the clamping electric device is activated. The clamping electric device drives four sets of worm gear assemblies to rotate synchronously through the first bevel gear box and the second bevel gear box. By controlling the rotation of the lead screw in the worm gear assembly, the movable valve seat is driven to release the valve plate. When the movable valve seat is released into place, the clamping electric device stops working, and the plate moving electric device starts working. The plate moving electric device drives the wire rope to rotate through the lifting device. By tightening and loosening the wire rope, the valve plate moves up and down.

Claims

1. A vertical slide gate valve with worm gear drive, characterized in that: The system includes a fixed valve body (1) housed within a lower valve body frame (12), with a valve plate (5) for opening and closing the valve body and a movable valve seat (11) for clamping and releasing the valve plate on the fixed valve body (1). The system is characterized by: a valve body upper frame (13) positioned above the lower valve body frame (12), a valve body crossbeam (14) positioned at the top of the upper valve body frame (13), and a lifting device (2) positioned at the side end of the lower valve body frame (12) for moving the valve plate (5) up and down. The side end of the lifting device (2) is provided with a walking plate electric device (3) for driving the lifting device to move. A steel wire rope (4) for driving the valve plate to move up and down is provided between the lifting device (2) and the valve plate (5). The end of the steel wire rope (4) is connected to the top of the valve plate (5). A worm gear assembly (8) is provided at the clamping point of the movable valve seat (11). A clamping electric device (10) for driving the worm gear assembly to achieve clamping and releasing of the movable valve seat is provided on the lower frame (12) of the valve body.

2. A vertical slide gate valve with worm gear drive according to claim 1, characterized in that: The lifting device (2) includes a drum box (15) set on the lower frame (12) of the valve body and a transmission box (16) set on the outside of the drum box. The drum box (15) is equipped with a wire rope drum (17) for winding the wire rope (4) through a rotating shaft (18). A large gear (19) is set on the rotating shaft (18) on the outside of the drum box (15). A small gear (20) that meshes with the large gear is set inside the transmission box (16). The walkway electric assembly (3) is connected to the rotating shaft of the small gear (20).

3. A vertical slide gate valve with worm gear drive according to claim 1, characterized in that: Both the upper frame (13) and the crossbeam (14) of the valve body are equipped with fixed pulleys (6) for guiding the wire rope.

4. A vertical slide gate valve with worm gear drive according to claim 1, characterized in that: Two worm gear assemblies (8) are respectively provided on the upper and lower sides of the movable valve seat (11). A first bevel gear box (9) and a second bevel gear box (7) for driving the corresponding side worm gear assembly are respectively provided on the upper and lower sides of the valve body lower frame (12). A coupling is provided between the first bevel gear box (9) and the second bevel gear box (7). The clamping electric device (10) is connected to the rotating shaft of the first bevel gear box.

5. A vertical slide gate valve with worm gear drive according to claim 1, characterized in that: The two worm gear assemblies (8) on the same side are connected by a spline universal coupling (21).

6. A vertical slide gate valve with worm gear drive according to claim 5, characterized in that: The worm gear assembly (8) includes a lead screw (23) that meshes with a spline universal coupling (21) via a gear set. A lead screw nut (24) is sleeved on the lead screw (23). The lead screw nut is connected to a movable valve seat (11). A bellows (22) is provided between the movable valve seat and the fixed valve body for following the movement of the movable valve seat.

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