Butterfly valve device convenient for flow regulation and control

Abstract

The utility model discloses a butterfly valve device convenient for flow regulation and control, which comprises a butterfly valve main body, a butterfly plate is arranged in the butterfly valve main body, a mounting cylinder is fixedly welded on the butterfly valve main body, a rotating shaft is rotatably mounted in the mounting cylinder, the butterfly plate is fixedly mounted on the rotating shaft, a transmission case is fixedly welded at the top end of the mounting cylinder, and the transmission case is fixedly welded at the top end of the mounting cylinder. A rotating rod is rotationally installed on the transmission box and is in transmission connection with the rotating shaft through a transmission assembly of the transmission box, and a screwing handle is fixedly installed at the outer end of the rotating rod. In the using process, after flow adjustment of the butterfly valve is completed, the stud can be driven to rotate in the forward direction by screwing the hand wheel in the forward direction, when the stud rotates in the forward direction, the stud can move downwards on the L-shaped supporting frame, the arc-shaped pressing block is driven to move downwards to extrude the limiting wheel, the limiting wheel is limited, and then the rotating rod is limited; the problem that due to the long-time liquid flow impact effect, the butterfly plate can rotate, and consequently flow regulation and control are unstable is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve device which is convenient for flow control. Background Art

[0002] A butterfly valve, also known as a flap valve, is a regulating valve with a simple structure. It can be used for the on-off control of low-pressure pipeline media. A butterfly valve refers to a valve whose closing member (valve disc or butterfly plate) is a disc that rotates around the valve axis to achieve opening and closing. It is mostly used in various water pipelines to achieve the purpose of stopping.

[0003] In the prior art, an authorized patent with announcement number CN214197309U discloses a butterfly valve that is convenient for adjusting flow, including a butterfly valve body and a butterfly plate, a shaft rotating rod fixedly connected at the center of the butterfly plate, a mounting shell fixedly connected to the surface of the butterfly valve body, a square mounting block fixedly connected to the upper end of the mounting shell, and a circular placement groove and a square placement groove are respectively provided inside the square mounting block. The utility model uses a shaft rotating rod, a rotating circular plate, a rack and a gear plate to enable the shaft rotating rod to rotate better, thereby allowing the butterfly plate to rotate, so that the butterfly plate can form flow spaces of different areas with the inner wall of the butterfly valve body, thereby achieving corresponding flow adjustment, and making the butterfly valve more practical.

[0004] However, the above technical solution still has the following shortcomings when used in practice: the above device lacks a limiting structure for the shaking plate, so that when the butterfly valve is in use, the butterfly plate may rotate due to the impact of long-term liquid flow, resulting in unstable flow control. In this regard, we propose a butterfly valve device that is convenient for flow control. Utility Model Content

[0005] The purpose of the utility model is to provide a butterfly valve device which is convenient for flow control, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a butterfly valve device for facilitating flow control, comprising:

[0007] A butterfly valve body, a butterfly plate is arranged in the butterfly valve body, a mounting cylinder is fixedly welded on the butterfly valve body, a rotating shaft is rotatably installed in the mounting cylinder, the butterfly plate is fixedly installed on the rotating shaft, a transmission box is fixedly welded on the top of the mounting cylinder, a transmission assembly is arranged in the transmission box, a rotating rod is rotatably installed on the side wall of the transmission box, the rotating rod is transmission-connected with the rotating shaft through the transmission assembly of the transmission box, a screwing handle is fixedly installed on the outer end of the rotating rod, a limiting wheel is fixedly welded on the rotating rod, a limiting assembly is arranged on the top of the transmission box, the limiting assembly includes an L-shaped support frame, the L-shaped support frame is fixedly welded on the top wall of the transmission box, a stud is threadedly connected on the L-shaped support frame, an arc-shaped pressure block is rotatably installed on one end of the stud close to the limiting wheel, two guide columns are fixedly welded on the arc-shaped pressure block, and the guide column is slidably connected to the L-shaped support frame.

[0008] Preferably, a pair of support rods are fixedly welded on one side wall of the transmission box close to the limiting wheel, a ruler disk is fixedly installed on the outer ends of the pair of support rods, a scale is arranged at the edge of the ruler disk, and a pointer is fixedly welded on the rotating rod.

[0009] Preferably, the pressing surfaces of the limiting wheel and the arc-shaped pressing block are both provided with anti-slip grooves.

[0010] Preferably, a hand wheel is fixedly mounted on the top end of the stud.

[0011] Preferably, two connecting flanges are fixedly welded on the butterfly valve body.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. During the use of the utility model, when the flow adjustment of the butterfly valve is completed, the hand wheel can be turned forward to drive the stud to rotate forward. When the stud rotates forward, it can move downward on the L-shaped support frame, drive the arc-shaped pressure block to move downward to squeeze the limit wheel, limit the limit wheel, and then limit the rotating rod, avoiding the butterfly plate from rotating due to the impact of long-term liquid flow, resulting in unstable flow control.

[0014] 2. The utility model cooperates with the supporting rod, scale plate, scale meter and pointer, and in the process of adjusting the flow of the butterfly valve, the rotating rod can drive the pointer to rotate when it rotates. The position of the scale meter that the pointer is aligned with is the current flow of the butterfly valve, so that it is easy to ensure the accuracy of regulation when adjusting the flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional structural schematic diagram of a butterfly valve device for flow control proposed by the utility model;

[0016] Figure 2The utility model proposes a butterfly valve device which is convenient for flow control. Figure 1 The enlarged structural diagram at A in the middle;

[0017] Figure 3 This is a three-dimensional structural diagram of the connection between a limiting wheel and an arc-shaped pressing block in a butterfly valve device for facilitating flow control proposed by the utility model.

[0018] In the figure: 1. Butterfly valve body; 2. Butterfly plate; 3. Mounting cylinder; 4. Rotating shaft; 5. Transmission box; 6. Rotating rod; 7. Twist handle; 8. Limit wheel; 9. L-shaped support frame; 10. Stud; 11. Arc-shaped pressure block; 12. Guide column; 13. Support rod; 14. Scale plate; 15. Dial; 16. Pointer; 17. Anti-slip groove; 18. Handwheel; 19. Connecting flange. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3 The utility model provides a technical solution: a butterfly valve device that is convenient for flow control, comprising:

[0021] A butterfly valve body 1, a butterfly plate 2 is arranged in the butterfly valve body 1, a mounting tube 3 is fixedly welded on the butterfly valve body 1, a rotating shaft 4 is rotatably installed in the mounting tube 3, the butterfly plate 2 is fixedly installed on the rotating shaft 4, a transmission box 5 is fixedly welded on the top of the mounting tube 3, a transmission assembly is arranged in the transmission box 5, and the transmission assembly is an existing public technology, so it is not described in detail, a rotating rod 6 is rotatably installed on the side wall of the transmission box 5, and the rotating rod 6 is connected to the rotating shaft 4 through the transmission assembly of the transmission box 5. 6 is fixedly installed with a screw handle 7 at the outer end, a limit wheel 8 is fixedly welded on the rotating rod 6, a limit assembly is arranged on the top of the transmission box 5, and the limit assembly comprises an L-shaped support frame 9, the L-shaped support frame 9 is fixedly welded on the top wall of the transmission box 5, a stud 10 is threadedly connected on the L-shaped support frame 9, an arc-shaped pressing block 11 is rotatably installed on one end of the stud 10 close to the limit wheel 8, two guide columns 12 are fixedly welded on the arc-shaped pressing block 11, and the guide column 12 is slidably connected to the L-shaped support frame 9.

[0022] A pair of support rods 13 are fixedly welded on one side wall of the transmission box 5 close to the limiting wheel 8, and a scale plate 14 is fixedly installed on the outer ends of the pair of support rods 13. A scale meter 15 is arranged at the edge of the scale plate 14, and a pointer 16 is fixedly welded on the rotating rod 6. When the rotating rod 6 rotates, it can drive the pointer 16 to rotate. The position of the scale meter 15 that the pointer 16 is aligned with is the current flow of the butterfly valve, so as to ensure the accuracy of the regulation when adjusting the flow.

[0023] The pressing surfaces of the limiting wheel 8 and the arc-shaped pressing block 11 are both provided with anti-skid patterns 17 , which can increase the friction force when the arc-shaped pressing block 11 and the limiting plate 8 are pressed together, thereby preventing the limiting plate 8 from slipping.

[0024] A hand wheel 18 is fixedly mounted on the top of the stud 10 , and the hand wheel 18 is convenient for rotating the stud 10 to adjust the arc-shaped pressing block 11 .

[0025] Two connecting flanges 19 are fixedly welded on the butterfly valve body 1, and the connecting flanges 19 are convenient for installing and fixing the butterfly valve.

[0026] Working principle: During use, the utility model drives the rotating rod 6 to rotate by turning the screw handle 7, and the rotating rod 6 drives the rotating shaft 4 to rotate through the transmission assembly of the transmission box 5, thereby driving the butterfly plate 2 to flip to achieve flow control of the butterfly valve. After the adjustment is completed, the hand wheel 18 is turned forward to drive the stud 10 to rotate forward. When the stud 10 rotates forward, it can move downward on the L-shaped support frame 9, driving the arc-shaped pressure block 11 to move downward to squeeze the limiting wheel 8, thereby limiting the limiting wheel 8, and then achieving the limitation of the rotating rod 6, avoiding the butterfly plate from self-rotating due to the impact of long-term liquid flow, resulting in unstable flow control.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] 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 butterfly valve device for convenient flow control, characterized in that: include: A butterfly valve body (1), wherein a butterfly plate (2) is arranged in the butterfly valve body (1), a mounting tube (3) is fixedly welded on the butterfly valve body (1), a rotating shaft (4) is rotatably mounted in the mounting tube (3), the butterfly plate (2) is fixedly mounted on the rotating shaft (4), a transmission box (5) is fixedly welded on the top of the mounting tube (3), a transmission assembly is arranged in the transmission box (5), a rotating rod (6) is rotatably mounted on the side wall of the transmission box (5), the rotating rod (6) is transmission-connected to the rotating shaft (4) through the transmission assembly of the transmission box (5), and a rotating rod (6) is fixedly mounted on the outer end of the rotating rod (6) The handle (7) is turned, a limit wheel (8) is fixedly welded on the rotating rod (6), a limit assembly is arranged on the top of the transmission box (5), and the limit assembly comprises an L-shaped support frame (9), the L-shaped support frame (9) is fixedly welded on the top wall of the transmission box (5), a stud (10) is threadedly connected on the L-shaped support frame (9), an arc-shaped pressing block (11) is rotatably installed on one end of the stud (10) close to the limit wheel (8), two guide columns (12) are fixedly welded on the arc-shaped pressing block (11), and the guide columns (12) are slidably connected to the L-shaped support frame (9).

2. A butterfly valve device for flow control according to claim 1, characterized in that: A pair of support rods (13) are fixedly welded on a side wall of the transmission box (5) close to the limiting wheel (8); a scale plate (14) is fixedly installed on the outer ends of the pair of support rods (13); a scale plate (15) is arranged at the edge of the scale plate (14); and a pointer (16) is fixedly welded on the rotating rod (6).

3. A butterfly valve device for flow control according to claim 1, characterized in that: The pressing surfaces of the limiting wheel (8) and the arc-shaped pressing block (11) are both provided with anti-slip grooves (17).

4. A butterfly valve device for flow control according to claim 1, characterized in that: A hand wheel (18) is fixedly mounted on the top end of the stud (10).

5. A butterfly valve device for flow control according to claim 1, characterized in that: Two connecting flanges (19) are fixedly welded to the butterfly valve body (1).

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