Right-angle turn-off device with anti-blocking function

Abstract

The utility model relates to the technical field of shutoff devices, and discloses a right-angle shutoff device with an anti-blocking function, which comprises a shell, an air cylinder, a hollow hole, a cover plate, a rotating sleeve, a first transmission rod, an outer connecting rod, a second transmission rod, a limiting piece and an inner connecting rod, the left end of the inner connecting rod is fixedly connected with a fixing piece for fixing the cover plate, and the inner wall of the shell is fixedly connected with three sliding rods. The sliding rod is in sliding connection with a filtering piece for stirring fluid in the shell. By starting the air cylinder, the piston rod in the air cylinder pushes the rotating sleeve downwards, meanwhile, the end, rotationally connected with the first transmission rod, of the right end of the outer connecting rod moves downwards, the left end of the outer connecting rod rotates in the original position, and therefore the second transmission rod is driven to rotate clockwise, the inner connecting rod rotates anticlockwise, and the cover plate is driven to rotate rightwards; the device is simple in structure, convenient to operate and capable of being rapidly turned off, turned on and adjusted at a time, and the working efficiency of workers is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shut-off devices, and particularly relates to a right-angle shut-off device with an anti-blocking function. Background Art

[0002] A right-angle shut-off device can effectively cut off or close the medium flow in a limited space, and is widely used in occasions such as the powder feeding pipeline of a boiler in a thermal power plant, a large air duct, etc., to play the role of rapid shut-off, opening and primary regulation.

[0003] The existing right-angle shut-off device for controlling the flow of powder materials such as stone powder and anti-blocking regulation in the powder feeding pipeline of a boiler in a thermal power plant has a complex structure, resulting in complex switches that operators need to operate and low work efficiency.

[0004] Therefore, we provide a right-angle shut-off device with an anti-blocking function. Content of the Utility Model

[0005] The purpose of the utility model is to provide a right-angle shut-off device with an anti-blocking function to solve the problems raised in the above background art.

[0006] To solve the above technical problems, the utility model provides the following technical solutions:

[0007] Preferably, it includes a housing and a cylinder. A hollow hole runs through the center of the housing. A cover plate is provided at the lower end of the hollow hole. The lower end of the cylinder is fixedly connected with a rotating sleeve. The rotating sleeve is rotatably connected with a first transmission rod. Outer connecting rods are rotatably connected to both ends of the first transmission rod. Second transmission rods are fixedly connected to the ends of the outer connecting rods close to the housing. A limiting member for restricting the second transmission rod from rotating in place is provided at the lower end of the housing. Inner connecting rods located inside the housing are fixedly connected to both ends of the second transmission rod. Fixing members for preventing the cover plate from tilting are fixedly connected to the left ends of the inner connecting rods. Three sliding rods are fixedly connected to the inner wall of the housing. A filtering member for stirring the fluid inside the housing is slidably connected to the sliding rods.

[0008] Preferably, the limiting member includes a sealing cover rotatably connected to the second transmission rod. Circular holes penetrate through the front and rear sides of the housing. The sealing cover is fixedly connected inside the circular holes.

[0009] Preferably, the fixing member includes two fixing seats fixedly connected to the front and rear ends of the cover plate. Connecting rod pins are fixedly connected to the fixing seats. The connecting rod pins pass through the inner connecting rods and the fixing seats and are fixedly connected, so that the fixed cover plate rotates following the inner connecting rods.

[0010] Preferably, the filter element includes a circular ring that is slidably connected to the sliding rod. The sliding rod is provided with three grooves, and the sliding rod is slidably fitted within the grooves. A plurality of rectangular rods are fixedly connected within the circular ring, which can stratify the fluid within the housing to prevent pipeline blockage.

[0011] Preferably, a self-lubricating copper sleeve is provided on the inner wall of the rotating sleeve, so as to reduce frictional losses and extend the service life when the rotating sleeve pushes the first transmission rod downward.

[0012] Preferably, the inside of the rectangular rod is a hollow rectangular rod, which reduces the weight of the rectangular rod and makes it easier for the cover plate to push the circular ring.

[0013] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows:

[0014] By starting the cylinder, the piston rod within the cylinder pushes the rotating sleeve downward. At the same time, the end of the outer connecting rod that is rotatably connected to the first transmission rod moves downward, and the left end of the outer connecting rod rotates at its original position, thereby driving the second transmission rod to rotate clockwise, causing the inner connecting rod to rotate counterclockwise, driving the cover plate to rotate to the right, enabling the powder feeding pipeline to flow. This device has a simple structure and convenient operation, can be quickly shut off, opened, and adjusted once, improving the work efficiency of the staff.

[0015] In the present utility model, a circular ring is provided on the sliding rod fixedly connected to the housing. A plurality of rectangular rods are fixedly connected within the circular ring, which can follow the circular ring to slide and stratify the fluid within the housing, more effectively preventing pipeline blockage.

[0016] The device of the present utility model does not have a door panel seal and components that can cause the device to jam, and can achieve self-adaptive sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a schematic diagram of a partial structure of the present utility model;

[0019] Figure 3 is a schematic diagram of a partial structure of the present utility model;

[0020] Figure 4 is a schematic diagram of the split structure of the rotating sleeve, outer connecting rod, and sealing cover of the present utility model;

[0021] Figure 5 is a schematic diagram of the overall structure of the present utility model;

[0022] Figure 6 is a schematic diagram of the split structure of the housing and outer connecting rod of the present utility model.

[0023] Wherein: 1. Housing; 2. Hollow hole; 3. Cylinder; 4. Rotating sleeve; 5. First transmission rod; 6. Outer connecting rod; 7. Circular hole; 8. Second transmission rod; 9. Sealing cover; 10. Inner connecting rod; 11. Connecting rod pin; 12. Fixed seat; 13. Cover plate; 14. Slide bar; 15. Ring; 16. Groove; 17. Rectangular rod. Detailed implementation mode

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figure 1-6 , an embodiment provided by the present invention: including a housing 1 and a cylinder 3. There is a ring at the upper and lower ends of the housing 1, which can be sealed with double door panels and has strong airtightness. A hollow hole 2 runs through the center of the housing 1, and a cover plate 13 is provided at the lower end of the hollow hole 2. The lower end of the cylinder 3 is fixedly connected with a rotating sleeve 4, the rotating sleeve 4 is rotatably connected with a first transmission rod 5, both ends of the first transmission rod 5 are rotatably connected with outer connecting rods 6, and both ends of the outer connecting rods 6 close to the housing 1 are fixedly connected with second transmission rods 8. A limiting member for restricting the second transmission rod 8 from rotating in place is provided at the lower end of the housing 1. Both ends of the second transmission rod 8 are fixedly connected with inner connecting rods 10 located inside the housing 1, and fixing members for preventing the cover plate 13 from tilting are fixedly connected to the left ends of the inner connecting rods 10. Three slide bars 14 are fixedly connected to the inner wall of the housing 1, and a filtering member for stirring the fluid inside the housing 1 is slidably connected to the slide bars 14.

[0026] Through the above technical solution, the limiting member includes a sealing cover 9 rotatably connected to the second transmission rod 8. Circular holes 7 penetrate through the front and rear sides of the housing 1, and the sealing cover 9 is connected and fixed inside the circular holes 7, thereby restricting the position of the second transmission rod 8 and preventing the fluid in the housing 1 from flowing out.

[0027] Through the above technical solution, the fixing member includes two fixed seats 12 fixedly connected to the front and rear ends of the cover plate 13. Connecting rod pins 11 are fixedly connected to the fixed seats 12, and the connecting rod pins 11 pass through the inner connecting rods 10 and the fixed seats 12 and are connected and fixed, thereby fixing the rotation of the cover plate 13 following the inner connecting rods 10.

[0028] Through the above technical solution, the filtering member includes a ring 15 slidably connected to the slide bars 14. The slide bars 14 are provided with three grooves 16, and the slide bars 14 are slidably engaged inside the grooves 16. Several rectangular rods 17 are fixedly connected inside the ring 15, which can stratify the fluid inside the housing 1 to prevent pipeline blockage.

[0029] Through the above technical solution, a self-lubricating copper sleeve is provided on the inner wall of the rotating sleeve 4, which can reduce the friction loss when the rotating sleeve 4 pushes the first transmission rod 5 downward.

[0030] Through the above technical solution, the rectangular rod 17 is a hollow rectangular rod, which reduces the weight of the rectangular rod 17 and makes it easier for the cover plate 13 to push the ring 15.

[0031] Working principle: During use, the operator activates the switch of the cylinder 3, causing the piston rod in the cylinder 3 to push the rotating sleeve 4 downward, driving the first transmission rod 5 to move downward. At the same time, the right end of the outer connecting rod 6, which is rotationally connected to the first transmission rod 5, moves downward, and the left end of the outer connecting rod 6 rotates at its original position, thereby driving the second transmission rod 8 to rotate clockwise, causing the inner connecting rod 10 to rotate counterclockwise, driving the cover plate 13 to rotate to the right. During the rotation of the cover plate 13, it touches and pushes the ring 15 to slide to the right inside the housing 1, causing several rectangular rods 17 inside the ring 15 to stratify the fluid inside the housing 1 until the cover plate 13 rotates 90 degrees to the right inner wall of the housing 1, and at the same time pushing the ring 15 to the other end of the housing 1, and then the cylinder 3 stops moving.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A right-angle switch with anti-blocking function, comprising a housing (1) and a cylinder (3), wherein a hollow hole (2) is passed through the center of the housing (1), and a cover plate (13) is provided at the lower end of the hollow hole (2), characterized in that: The lower end of the cylinder (3) is fixedly connected to a rotating sleeve (4), and the rotating sleeve (4) is rotatably connected to a first transmission rod (5). The ends of the first transmission rod (5) are rotatably connected to external connecting rods (6), and one end of the external connecting rod (6) close to the shell (1) is fixedly connected to a second transmission rod (8). The lower end of the shell (1) is provided with a limiter for limiting the rotation of the second transmission rod (8) in situ. The two ends of the second transmission rod (8) are fixedly connected to an internal connecting rod (10) located in the shell (1), and the left end of the internal connecting rod (10) is fixedly connected to a fixing member for preventing the cover plate (13) from tilting. The inner wall of the shell (1) is fixedly connected to three sliding rods (14), and the sliding rods (14) are slidably connected to a filter for stirring the fluid in the shell (1).

2. The right-angle switch with anti-blocking function according to claim 1, characterized in that: The limiting member comprises a sealing cover (9) rotatably connected to the second transmission rod (8); circular holes (7) are penetrated through the front and rear sides of the housing (1); and the sealing cover (9) is connected and fixed in the circular hole (7).

3. The right-angle switch with anti-blocking function according to claim 1 is characterized in that: The fixing member comprises two fixing seats (12) connected and fixed to the front and rear ends of the cover plate (13), each of the fixing seats (12) being fixedly connected to a connecting rod pin (11), and each of the connecting rod pins (11) passing through the inner connecting rod (10) and the fixing seat (12) to be connected and fixed.

4. The right-angle switch with anti-blocking function according to claim 1, characterized in that: The filter element comprises a circular ring (15) slidably connected to the sliding rod (14); the sliding rod (14) is provided with three grooves (16); the sliding rod (14) is slidably fitted in the grooves (16); and a plurality of rectangular rods (17) are fixedly connected in the circular ring (15).

5. The right-angle switch with anti-blocking function according to claim 1 is characterized in that: The inner wall of the rotating sleeve (4) is provided with a self-lubricating copper sleeve.

6. The right-angle switch with anti-blocking function according to claim 4, characterized in that: The rectangular rod (17) is a hollow rectangular rod.

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