Flow-controllable butterfly valve

Abstract

The utility model discloses a flow controllable type butterfly valve which comprises a butterfly valve body, a valve clack is arranged on the inner side of the butterfly valve body, a control assembly is arranged at the top end of the butterfly valve body and comprises a transmission rod installed in the middle of the top end of the butterfly valve body, and the bottom end of the transmission rod is connected with the valve clack. The outer side of the top end of the butterfly valve body is fixedly connected with a mounting frame, the top of the surface of the transmission rod is fixedly sleeved with a first gear, the side face of the first gear is in meshed connection with a second gear, the top end of the second gear is fixedly connected with a rotating rod, and the top end of the rotating rod is rotationally connected with the surface of the bottom end of the inner side of the mounting frame. According to the butterfly valve, the butterfly valve body, the valve clack and the control assembly are designed, so that when the butterfly valve is used, the rotating wheel can be firmly fixed to the designated position under the interaction of all the components, the situation that the rotating wheel easily rotates under the action of external force is avoided, and therefore the stability of the valve clack is guaranteed; and the flow of the butterfly valve can be controlled more stably.

Description

Technical Field

[0001] The utility model belongs to the technical field of butterfly valves, and particularly relates to a flow controllable butterfly valve. Background Art

[0002] A butterfly valve is a simple regulating valve that can be used for the on-off control of media in low-pressure pipelines. The butterfly valve refers to a valve whose closing member is a disc and rotates around the valve shaft to achieve opening and closing. However, the existing butterfly valve has a simple structure and is prone to the rotating wheel that drives the valve flap to rotate under the action of external force, resulting in a change in the angle of the valve flap, making it difficult to control the flow rate of the butterfly valve. For this reason, we propose a flow controllable butterfly valve. Content of the Utility Model

[0003] The purpose of the utility model is to provide a flow controllable butterfly valve. By designing a butterfly valve body, a valve flap, and a control component, when the butterfly valve is in use, through the interaction between various components, the rotating wheel can be firmly fixed in a specified position and will not rotate easily under the action of external forces, thereby ensuring the stability of the valve flap and making the flow rate of the butterfly valve more stable.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A flow controllable butterfly valve includes a butterfly valve body. A valve flap is arranged inside the butterfly valve body. A control component is arranged at the top of the butterfly valve body. The control component includes a transmission rod installed in the middle of the top of the butterfly valve body. The bottom end of the transmission rod is connected to the valve flap. An installation frame is fixedly connected to the outer side of the top of the butterfly valve body. A first gear is fixedly sleeved on the top surface of the transmission rod. A second gear is meshed with the side of the first gear. A rotating rod is fixedly connected to the top of the second gear. The top end of the rotating rod is rotatably connected to the bottom surface of the inner side of the installation frame. A third gear is meshed with the side of the second gear. A rotating rod is fixedly connected to the top of the third gear. The top end of the rotating rod penetrates through the inner wall of the installation frame and extends to the top of the installation frame and is fixedly connected to a rotating wheel. The surface of the rotating rod is rotatably connected to the installation frame. A first fixing plate is further arranged at the bottom of the rotating wheel. The first fixing plate is fixedly sleeved on the surface of the rotating rod. Fixing holes are formed in the side of the first fixing plate. A vertical plate is fixedly connected to the top of the installation frame. A fixing rod is slidably connected to the side of the vertical plate. One end of the fixing rod is adapted to the fixing hole, and the other end of the fixing rod is fixedly connected to a pulling plate. A spring is further arranged between the pulling plate and the vertical plate.

[0005] Preferably, it further includes a prompting component. The prompting component includes a fixing ring fixedly sleeved on the bottom surface of the transmission rod. An indicating block is fixedly connected to the side of the fixing ring. A circular ring is arranged outside the indicating block. Scale markings are arranged at the top of the circular ring. A support rod is arranged at the bottom of the circular ring. The orientation of the indicating block is flush with the valve flap.

[0006] Preferably, the diameter of the first gear is twice that of the second gear, and the diameter of the first gear is four times that of the third gear.

[0007] Preferably, a rubber anti-slip sleeve is sleeved on the surface of the rotating wheel.

[0008] Preferably, the fixed ring, the indicating block, the circular ring, and the support rod are all made of plastic.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0010] 1. By designing the butterfly valve body, the valve flap, and the control assembly, during the use of the butterfly valve, through the interaction between various components, the rotating wheel can be firmly fixed at a specified position and will not rotate easily under the action of external forces, thus ensuring the stability of the valve flap and enabling the flow rate of the butterfly valve to be controlled more stably.

[0011] 2. By designing the prompting assembly, when the transmission rod rotates, the transmission rod will drive the indicating block to move under the action of the fixed ring, and through the action of the circular ring and the scale marking line, the rotation angle of the indicating block can be clearly seen, so that the personnel can always know the inclination angle of the valve flap, thereby better controlling the flow rate of the butterfly valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0013] Figure 2 is a rear-side top-down three-dimensional structural diagram of the present utility model;

[0014] Figure 3 is of the present utility model Figure 1 an enlarged three-dimensional structural diagram of part A;

[0015] Figure 4 is of the present utility model Figure 2 an enlarged three-dimensional structural diagram of part B;

[0016] Wherein: 1, butterfly valve body; 2, valve flap; 3, transmission rod; 4, mounting bracket; 5, first gear; 6, second gear; 7, rotating rod; 8, third gear; 9, rotating rod; 10, rotating wheel; 11, first fixed disk; 12, fixing hole; 13, vertical plate; 14, fixing rod; 15, pulling disk; 16, spring; 17, fixed ring; 18, indicating block; 19, circular ring; 20, scale marking line; 21, support rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0018] Please refer to Figure 1 , Figure 2 , Figure 4, the present utility model provides a technical solution: a flow controllable butterfly valve, which includes a butterfly valve body 1. Inside the butterfly valve body 1, there is a valve flap 2. At the top of the butterfly valve body 1, there is a control assembly. The control assembly includes a transmission rod 3 installed in the middle of the top of the butterfly valve body 1. The bottom end of the transmission rod 3 is connected to the valve flap 2. On the outer side of the top of the butterfly valve body 1, there is a fixed mounting bracket 4. At the top of the surface of the transmission rod 3, there is a first gear 5 fixedly sleeved. On the side of the first gear 5, there is a second gear 6 meshed. At the top of the second gear 6, there is a rotating rod 7 fixedly connected. The top end of the rotating rod 7 is rotatably connected to the inner bottom surface of the mounting bracket 4. On the side of the second gear 6, there is a third gear 8 meshed. At the top of the third gear 8, there is a rotating rod 9 fixedly connected. The top end of the rotating rod 9 penetrates through the inner wall of the mounting bracket 4 and extends to the top of the mounting bracket 4 and is fixedly connected with a rotating wheel 10. The surface of the rotating rod 9 is rotatably connected to the mounting bracket 4. At the bottom of the rotating wheel 10, there is also a first fixing plate 11. The first fixing plate 11 is fixedly sleeved on the surface of the rotating rod 9. On the side of the first fixing plate 11, there are fixing holes 12. And at the top of the mounting bracket 4, there is a vertical plate 13 fixedly connected. On the side of the vertical plate 13, there is a fixing rod 14 slidably connected. One end of the fixing rod 14 is adapted to the fixing hole 12. And the other end of the fixing rod 14 is fixedly connected with a pulling plate 15. Between the pulling plate 15 and the vertical plate 13, there is also a spring 16. The diameter of the first gear 5 is twice the diameter of the second gear 6, and the diameter of the first gear 5 is four times the diameter of the third gear 8. When the third gear 8 rotates, the rotation speed of the first gear 5 is one-fourth of the rotation speed of the third gear 8, so that the first gear 5 can rotate slowly. A rubber anti-slip sleeve is sleeved on the surface of the rotating wheel 10. When a person rotates the rotating wheel 10, the comfort is better and the anti-slip effect is better; when it is necessary to adjust the opening inclination of the valve flap 2, first, the person pulls the pulling plate 15 outward. The pulling plate 15 drives the fixing rod 14 to move. At this time, the spring 16 is stressed and expands. At the same time, the end of the fixing rod 14 gradually leaves the inside of the fixing hole 12. After that, when the fixing rod 14 reaches a suitable position, the person rotates the rotating wheel 10. The rotating wheel 10 drives the rotating rod 9 and the first fixing plate 11 to rotate. During the rotation of the rotating rod 9, through the interaction between the first gear 5, the second gear 6, the rotating rod 7, and the third gear 8, the transmission rod 3 rotates simultaneously, thereby driving the valve flap 2 to rotate inside the butterfly valve body 1. When the valve flap 2 reaches a suitable inclination angle, the person stops rotating the rotating wheel 10. Then the person releases the pulling plate 15. At this time, the spring 16 contracts without force, thereby driving the end of the fixing rod 14 to be engaged inside the corresponding fixing hole 12 to complete the operation; the existing butterfly valve has a simple structure and is easily caused by external forces to make the rotating wheel 10 that drives the valve flap 2 rotate, resulting in a change in the angle of the valve flap 2, making it difficult to control the flow rate of the butterfly valve;By designing the butterfly valve body 1, the valve flap 2, and the control component, during the use of the butterfly valve, through the interaction between various components, the rotating wheel 10 can be firmly fixed in place and will not rotate easily under the action of external forces, thus ensuring the stability of the valve flap 2 and enabling the flow rate of the butterfly valve to be controlled more stably.

[0019] In this embodiment, preferably, as shown in Figure 1 , Figure 3 , it further includes a prompting component. The prompting component includes a fixing ring 17 fixedly sleeved on the bottom end surface of the transmission rod 3. A indicating block 18 is fixedly connected to the side of the fixing ring 17. A circular ring 19 is arranged outside the indicating block 18. A scale marking 20 is arranged at the top end of the circular ring 19, and a support rod 21 is arranged at the bottom end of the circular ring 19. The orientation of the indicating block 18 is flush with the valve flap 2. The fixing ring 17, the indicating block 18, the circular ring 19, and the support rod 21 are all made of plastic, saving the material cost. By designing the prompting component, when the transmission rod 3 rotates, the transmission rod 3 will drive the indicating block 18 to move under the action of the fixing ring 17, and through the action of the circular ring 19 and the scale marking 20, the rotation angle of the indicating block 18 can be clearly seen, so that the personnel can always know the inclination angle of the valve flap 2, and thus better control the flow rate of the butterfly valve.

[0020] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood 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 flow controllable butterfly valve, comprising a butterfly valve body (1), a valve flap (2) being arranged inside the butterfly valve body (1), and a control component being arranged at the top of the butterfly valve body (1), characterized in that: A control assembly, the control assembly comprising a transmission rod (3) mounted at the middle of the top end of a butterfly valve body (1), the bottom end of the transmission rod (3) being connected to the valve disc (2), the top outer side of the butterfly valve body (1) being fixedly connected to a mounting frame (4), the top of the surface of the transmission rod (3) being fixedly sleeved with a first gear (5), the side of the first gear (5) being meshingly connected to a second gear (6), the top of the second gear (6) being fixedly connected to a rotating rod (7), the top of the rotating rod (7) being rotatably connected to the bottom surface of the inner side of the mounting frame (4), the side of the second gear (6) being meshingly connected to a third gear (8), the top of the third gear (8) being fixedly connected to a rotating rod (9), the top of the rotating rod (9) penetrating the inner wall of the mounting frame (4). The mounting frame (4) is provided with a rotating wheel (10) fixedly connected to the top of the mounting frame (4). The surface of the rotating rod (9) is rotatably connected to the mounting frame (4). A first fixed plate (11) is provided at the bottom of the rotating wheel (10). The first fixed plate (11) is fixedly sleeved on the surface of the rotating rod (9). A fixing hole (12) is provided on the side of the first fixed plate (11). A vertical plate (13) is fixedly connected to the top of the mounting frame (4). A fixing rod (14) is slidably connected to the side of the vertical plate (13). One end of the fixing rod (14) is mutually adapted to the fixing hole (12). The other end of the fixing rod (14) is fixedly connected to a pull plate (15). A spring (16) is provided between the pull plate (15) and the vertical plate (13).

2. The flow controllable butterfly valve according to claim 1, characterized in that: It also includes a prompt component, the prompt component including a fixed ring (17) fixedly sleeved on the bottom end of the surface of the transmission rod (3), an indicator block (18) fixedly connected to the side of the fixed ring (17), a circular ring (19) arranged on the outside of the indicator block (18), a scale mark (20) arranged on the top of the circular ring (19), and a support rod (21) arranged on the bottom end of the circular ring (19), and the indicator block (18) is oriented flush with the valve disc (2).

3. The flow controllable butterfly valve according to claim 1, characterized in that: The diameter of the first gear (5) is twice the diameter of the second gear (6), and the diameter of the first gear (5) is four times the diameter of the third gear (8).

4. The flow controllable butterfly valve according to claim 1, characterized in that: The surface of the rotating wheel (10) is covered with a rubber anti-slip cover.

5. The flow controllable butterfly valve according to claim 2, characterized in that: The fixing ring (17), the indicating block (18), the circular ring (19), and the supporting rod (21) are all made of plastic.

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