Fluid butterfly valve with rapid hydraulic cut-off function

Abstract

The utility model discloses a fluid butterfly valve with a quick hydraulic cut-off function, which belongs to the field of valves, and comprises a valve body, a butterfly plate is rotatably mounted in the valve body, a valve rod is fixedly connected to the top of the butterfly plate, a rotating wheel is fixedly connected to the upper end of the valve rod, a connecting block is fixedly connected to one side of the rotating wheel, and the connecting block is fixedly connected to the other side of the rotating wheel. The top of the valve body is fixedly connected with a housing, one end of the housing is fixedly provided with a hydraulic cylinder, the output end of the hydraulic cylinder is provided with a piston rod, one end of the piston rod is fixedly connected with a hinged support, and a connecting rod is hinged between the hinged support and the connecting block. Through the arrangement of the rotating wheel, the connecting block, the hydraulic cylinder, the piston rod, the hinged support and the connecting rod, when the valve needs to be closed emergently, only the hydraulic cylinder needs to be started to drive the piston rod to extend, the piston rod drives the rotating wheel to rotate through the connecting rod, the rotating wheel drives the valve rod to rotate, the valve rod drives the butterfly plate to rotate by 90 degrees, and the rapid hydraulic cut-off function is achieved; and the use is more convenient in emergency.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, and in particular relates to a fluid butterfly valve with a rapid hydraulic cut-off function. Background Art

[0002] Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. Butterfly valve, also known as flap valve, is a simple regulating valve that can be used for the on-off control of low-pressure pipeline media. Butterfly valve refers to a valve whose closing part (valve disc or butterfly plate) is a disc that rotates around the valve axis to achieve opening and closing. It mainly plays a role of cutting off and throttling on the pipeline. The opening and closing part of the butterfly valve is a disc-shaped butterfly plate that rotates around its own axis in the valve body to achieve the purpose of opening, closing or regulating.

[0003] Most existing butterfly valves do not have an emergency shut-off function. In an emergency, the valve cannot be quickly closed, and the use is not convenient. Utility Model Content

[0004] The utility model aims to provide a fluid butterfly valve with a rapid hydraulic cut-off function to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fluid butterfly valve with a rapid hydraulic cut-off function, comprising a valve body, a butterfly plate rotatably installed inside the valve body, a valve stem fixedly connected to the top of the butterfly plate, a rotary wheel fixedly connected to the upper end of the valve stem, a connecting block fixedly connected to one side of the rotary wheel, a cover shell fixedly connected to the top of the valve body, a hydraulic cylinder fixedly installed at one end of the cover shell, a piston rod provided at the output end of the hydraulic cylinder, a hinge seat fixedly connected to one end of the piston rod, a connecting rod hinged between the hinge seat and the connecting block.

[0006] As a preferred implementation, flanges are provided on both sides of the valve body.

[0007] As a preferred implementation, a sealing ring is fixedly connected to the outer circumference of the butterfly plate.

[0008] As a preferred implementation, a sealed bearing is fixedly installed between the valve body and the cover shell, and the valve stem is rotatably installed in the sealed bearing.

[0009] As a preferred embodiment, a maintenance cover is provided on the top of the cover shell, and the maintenance cover is fixed to the cover shell by four bolts at four corners.

[0010] As a preferred implementation, a limit switch is fixedly installed on a side of the housing away from the hydraulic cylinder.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The fluid butterfly valve with rapid hydraulic cut-off function is provided with a rotating wheel, a connecting block, a hydraulic cylinder, a piston rod, a hinge seat and a connecting rod. When the valve needs to be closed urgently, it is only necessary to start the hydraulic cylinder to drive the piston rod to extend, so that the piston rod drives the hinge seat to approach the rotating wheel, so that the hinge seat drives the connecting block to rotate around the center of the rotating wheel through the connecting rod, so that the connecting block drives the rotating wheel to rotate, so that the rotating wheel drives the valve stem to rotate, and so that the valve stem drives the butterfly plate to rotate 90 degrees, so as to realize the rapid hydraulic cut-off function, which is more convenient to use in emergency situations.

[0013] The fluid butterfly valve with rapid hydraulic cut-off function is provided with a limit switch. When the rotating wheel drives the connecting block to rotate 90 degrees, the connecting block just touches the limit switch, so that the limit switch controls the hydraulic cylinder to close, thereby avoiding excessive rotation of the butterfly plate and improving the use accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a side view structural schematic diagram of the utility model;

[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 4 It is a schematic diagram of the top view of the rotating wheel of the utility model.

[0018] In the figure: 1. valve body; 2. butterfly plate; 3. valve stem; 4. runner; 5. connecting block; 6. cover; 7. hydraulic cylinder; 8. piston rod; 9. hinge seat; 10. connecting rod; 11. flange; 12. sealing ring; 13. sealed bearing; 14. maintenance cover; 15. limit switch. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the embodiments.

[0020] The following examples are used to illustrate the present invention, but cannot be used to limit the scope of protection of the present invention. The conditions in the examples can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0021] See also Figure 1-4The utility model provides a fluid butterfly valve with a rapid hydraulic cut-off function, comprising a valve body 1, flanges 11 are provided on both sides of the valve body 1, and the valve body 1 can be connected to a fluid pipeline through the flange 11, a butterfly plate 2 is rotatably installed inside the valve body 1, and a sealing ring 12 is fixedly connected to the outer circumference of the butterfly plate 2. The sealing effect of the butterfly plate 2 can be improved by setting the sealing ring 12, a valve stem 3 is fixedly connected to the top of the butterfly plate 2, a runner 4 is fixedly connected to the upper end of the valve stem 3, and a connecting block 5 is fixedly connected to one side of the runner 4, a cover shell 6 is fixedly connected to the top of the valve body 1, a hydraulic cylinder 7 is fixedly installed at one end of the cover shell 6, and the hydraulic cylinder 7 is horizontally arranged, and a piston rod 8 is provided at the output end of the hydraulic cylinder 7, and a hinge seat 9 is fixedly connected to one end of the piston rod 8, and a connecting rod 10 is hinged between the hinge seat 9 and the connecting block 5, and the connecting rod 10 is hinged between the hinge seat 9 and the connecting block 5, and the connecting rod 10 is hinged between the hinge seat 9 and the connecting block 5. The arrangement of the block 5, hydraulic cylinder 7, piston rod 8, hinge seat 9 and connecting rod 10, when it is necessary to close the valve urgently, it is only necessary to start the hydraulic cylinder 7 to extend the piston rod 8, so that the piston rod 8 drives the hinge seat 9 to approach the direction of the runner 4, so that the hinge seat 9 drives the connecting block 5 to rotate around the center of the runner 4 through the connecting rod 10, so that the connecting block 5 drives the runner 4 to rotate, so that the runner 4 drives the valve stem 3 to rotate, and the valve stem 3 drives the butterfly plate 2 to rotate 90°, so as to realize the rapid hydraulic cut-off function, which is more convenient to use in emergency situations. A limit switch 15 is fixedly installed on the side of the cover 6 away from the hydraulic cylinder 7. Through the arrangement of the limit switch 15, when the runner 4 drives the connecting block 5 to rotate 90°, the connecting block 5 just touches the limit switch 15, so that the limit switch 15 controls the hydraulic cylinder 7 to close, avoids excessive rotation of the butterfly plate 2, and improves the use accuracy.

[0022] Among them, a sealing bearing 13 is fixedly installed between the valve body 1 and the cover shell 6, and the valve stem 3 is rotatably installed in the sealing bearing 13. The setting of the sealing bearing 13 can improve the stability of the valve stem 3 and achieve a sealing effect.

[0023] A maintenance cover 14 is provided on the top of the cover shell 6 , and the maintenance cover 14 is fixed to the cover shell 6 by four bolts at four corners. The provision of the maintenance cover 14 facilitates maintenance of the interior of the cover shell 6 .

[0024] The working principle and use process of the utility model are as follows: first, through the arrangement of the rotating wheel 4, the connecting block 5, the hydraulic cylinder 7, the piston rod 8, the hinge seat 9 and the connecting rod 10, when the valve needs to be closed urgently, it is only necessary to start the hydraulic cylinder 7 to drive the piston rod 8 to extend, so that the piston rod 8 drives the hinge seat 9 to approach the rotating wheel 4, so that the hinge seat 9 drives the connecting block 5 to rotate around the center of the rotating wheel 4 through the connecting rod 10, so that the connecting block 5 drives the rotating wheel 4 to rotate, so that the rotating wheel 4 drives the valve stem 3 to rotate, and the valve stem 3 drives the butterfly plate 2 to rotate 90°, so as to realize the rapid hydraulic cut-off function, which is more convenient to use in emergency situations.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fluid butterfly valve with a rapid hydraulic cut-off function, comprising a valve body (1), characterized in that: A butterfly plate (2) is rotatably mounted inside the valve body (1), a valve stem (3) is fixedly connected to the top of the butterfly plate (2), a rotary wheel (4) is fixedly connected to the upper end of the valve stem (3), a connecting block (5) is fixedly connected to one side of the rotary wheel (4), a cover shell (6) is fixedly connected to the top of the valve body (1), a hydraulic cylinder (7) is fixedly mounted to one end of the cover shell (6), a piston rod (8) is provided at the output end of the hydraulic cylinder (7), one end of the piston rod (8) is fixedly connected to a hinge seat (9), and a connecting rod (10) is hingedly connected between the hinge seat (9) and the connecting block (5).

2. A fluid butterfly valve with rapid hydraulic cut-off function according to claim 1, characterized in that: Flanges (11) are provided on both sides of the valve body (1).

3. A fluid butterfly valve with rapid hydraulic cut-off function according to claim 1, characterized in that: A sealing ring (12) is fixedly connected to the outer circumference of the butterfly plate (2).

4. A fluid butterfly valve with rapid hydraulic cut-off function according to claim 1, characterized in that: A sealing bearing (13) is fixedly installed between the valve body (1) and the cover shell (6), and the valve stem (3) is rotatably installed in the sealing bearing (13).

5. The fluid butterfly valve with rapid hydraulic cut-off function according to claim 1, characterized in that: A maintenance cover (14) is provided on the top of the cover shell (6), and the maintenance cover (14) is fixed to the cover shell (6) by four bolts at four corners.

6. A fluid butterfly valve with rapid hydraulic cut-off function according to claim 1, characterized in that: A limit switch (15) is fixedly mounted on a side of the housing (6) away from the hydraulic cylinder (7).

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