Liquid flow control device

Abstract

The utility model belongs to the technical field of liquid flow control, and particularly relates to a liquid flow control device which comprises a valve body, a butterfly plate arranged in a channel of the valve body, a valve rod fixedly connected on the butterfly plate, a handle fixedly connected with the upper end of the valve rod and two brake plates sleeved at the upper end of the valve rod. The upper side handle is vertically and slidably connected with the brake plate, the lower side brake plate is fixedly connected with the upper end of the valve body, and a driving piece is arranged on the lower side of the handle and used for driving the upper side brake plate to move. According to the liquid flow control device, when the driving handle is kneaded to rotate upwards, the Y-shaped rod moves to enable the driving rod to be matched with the sliding slope to drive the upper brake plate to ascend, when the two brake plates are separated, the butterfly plate can be driven by rotating the handle to conduct accurate angle adjustment, and after the driving handle is loosened, the two brake plates are clamped; the rotation of the butterfly plate is effectively limited, so that the limiting stability is improved while the precise adjustment of the butterfly plate is realized.

Description

Technical Field

[0001] This utility model relates to the field of liquid flow control technology, and in particular to a liquid flow control device. Background Technology

[0002] Liquid flow control refers to the precise adjustment and control of the flow velocity and flow rate of liquids in pipelines or systems through various technologies and methods to meet the needs of different industrial processes and applications. Due to their structural characteristics and performance advantages, wafer-type butterfly valves are widely used in liquid flow control.

[0003] In manual wafer butterfly valves, the locking mechanism between the brake element and the brake disc must be released during adjustment. Then, the valve stem and disc can be rotated by turning the handle, thus controlling the flow rate. However, the adjustment precision between the existing brake disc and brake element is low, making it difficult to achieve precise control of the liquid flow rate. Existing patent document CN221610587U provides a wafer butterfly valve for liquid flow control. This device, with its wafer butterfly valve body, disc, handle, transparent scale block, and locking structure, allows for precise observation of the control handle's rotation angle, thereby controlling the flow rate of the wafer butterfly valve. This facilitates quick adjustment by operators and is simple and convenient to operate.

[0004] In this device, the locking block is engaged with the abrasive groove by the spring force to brake the butterfly plate. Since the braking force remains constant, the greater the opening angle of the butterfly plate, the greater the force exerted by the liquid flow in the valve body channel on the butterfly plate, making it prone to self-rotation and thus affecting flow control. Therefore, a liquid flow control device is urgently needed to solve the above problems. Utility Model Content

[0005] In order to overcome the defects of the prior art mentioned above, the inventors conducted in-depth research and, after a great deal of creative work, completed this utility model.

[0006] Specifically, the technical problem to be solved by this utility model is to provide a liquid flow control device to solve the current technical problem of difficulty in accurately adjusting the rotation of the disc and stably limiting its position.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0008] A liquid flow control device includes a valve body, a butterfly plate is provided in the valve body channel, a valve stem is fixedly connected to the butterfly plate, the valve stem is rotatably connected to the valve body, and a handle is fixedly connected to the upper end of the valve stem. Two brake plates are sleeved on the upper end of the valve stem. The upper handle is vertically slidably connected to the brake plate, and the lower brake plate is fixedly connected to the upper end of the valve body. A driving component is provided on the lower side of the handle.

[0009] The driving component includes a driving handle hinged to the handle, and a Y-shaped rod is hinged to the rotating end of the driving handle. The Y-shaped rod is used to drive the upper brake plate to move.

[0010] As an improved technical solution, the brake plate includes an annular plate, and multiple locking blocks are fixedly connected to one side of the annular plate at equal intervals in a ring.

[0011] As an improved technical solution, the upper brake plate is provided with multiple protrusions, which slide in contact with the grooves opened on the inner wall of the handle, and multiple springs are connected between the upper brake plate and the handle.

[0012] As an improved technical solution, the Y-shaped rod is eccentrically connected to the rotating end of the drive handle, and two drive rods are fixedly provided at the other end of the Y-shaped rod. Two drive seats are fixedly connected to the top surface of the brake plate on the upper side. The drive seats are provided with sliding inclined surfaces, and the drive rods slide in contact with the sliding inclined surfaces.

[0013] As an improved technical solution, a second spring is connected between the side of the drive handle away from the rotating end and the handle.

[0014] As an improved technical solution, a braking component is provided at one end of the handle. The braking component includes a slider. A sliding hole adapted to the slider is opened at the end of the handle away from the rotating end. A T-shaped rod is hinged to the bottom surface of the slider. A positioning groove is opened on the drive handle located directly below the T-shaped rod. The lower end of the T-shaped rod is located in the positioning groove. A guide slope is fixed on one side of the drive handle located in the positioning groove. The guide slope is away from the rotating end of the drive handle.

[0015] After adopting the above technical solution, the beneficial effects of this utility model are:

[0016] 1. When the drive handle is squeezed and rotated upward, the Y-shaped rod moves, causing the drive rod to cooperate with the sliding inclined plane to drive the upper brake plate to rise. When the two brake plates are separated, the butterfly plate can be precisely adjusted by rotating the handle. After the drive handle is released, the two brake plates are engaged, effectively limiting the rotation of the butterfly plate, thereby achieving precise adjustment of the butterfly plate while improving the limiting stability.

[0017] 2. This utility model, by placing the slider at one end of the sliding hole so that the lower end of the T-shaped rod is placed in the positioning groove, can block the rotation of the drive handle, avoid misoperation of the drive handle, ensure the connection stability of the two brake plates, and further improve the stability of the butterfly plate at a certain angle. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0019] Figure 1 This is a schematic diagram of the overall structure of the liquid flow control device of this utility model.

[0020] Figure 2 This is a disassembly diagram of the handle and rotating plate structure of the liquid flow control device of this utility model.

[0021] Figure 3 This utility model relates to a liquid flow control device. Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0022] Figure 4 This is a schematic diagram of the braking component and positioning groove structure of the liquid flow control device of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Valve body; 2. Butterfly plate; 3. Valve stem; 4. Handle; 5. Brake plate; 6. Drive component; 61. Drive handle; 62. Y-shaped rod; 63. Drive rod; 64. Drive seat; 65. Sliding inclined plane; 66. Spring 2; 67. Positioning groove; 68. Guide inclined plane; 7. Spring 1; 8. Brake assembly; 81. Slider; 82. T-shaped rod. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0027] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0028] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0029] like Figure 1-4 As shown in the figure, this embodiment provides a liquid flow control device, which includes a valve body 1, a butterfly plate 2 in the channel of the valve body 1, a valve stem 3 fixedly connected to the butterfly plate 2, the valve stem 3 being rotatably connected to the valve body 1, and a handle 4 fixedly connected to the upper end of the valve stem 3. Two brake plates 5 are sleeved on the upper end of the valve stem 3. The upper handle 4 is vertically slidably connected to the brake plate 5, the lower brake plate 5 is fixedly connected to the upper end of the valve body 1, and a driving member 6 is provided on the lower side of the handle 4.

[0030] The drive unit 6 includes a drive handle 61 hinged to the handle 4, and a Y-shaped rod 62 is hinged to the rotating end of the drive handle 61. The Y-shaped rod 62 is used to drive the upper brake plate 5 to move.

[0031] In the above technical solution, when the drive handle 61 is rotated upward, the Y-shaped rod 62 moves and drives the upper brake plate 5 to rise. After the two brake plates 5 are unengaged, the handle 4 can be rotated to drive the valve stem 3 to rotate, which can adjust the opening and closing angle of the butterfly plate 2. After the drive handle 61 is released, the two brake plates 5 are engaged, which can limit the rotation of the valve stem 3 and keep the butterfly plate 2 stable.

[0032] The brake plate 5 includes an annular plate, and multiple locking blocks are fixedly connected to one side of the annular plate in a ring at equal intervals.

[0033] In the above technical solutions, refer to Figure 2 When the two brake plates 5 are in contact, a locking block on one of the annular plates is positioned between two adjacent locking blocks on the other annular plate to achieve locking of the two brake plates 5. The number of locking blocks on the annular plates is 180. When the locking block switches one tooth position, the butterfly plate 2 can be rotated by 1°, thereby achieving precise control of the angle of the butterfly plate 2.

[0034] Among them, reference Figure 1 and Figure 2 Indicator arrows are fixedly mounted on both sides of the upper end of the valve body 1. An angle scale is engraved on one end of the valve stem 3. When the handle 4 is rotated, the specific opening and closing angle of the butterfly plate 2 can be determined by referring to the angle scale.

[0035] Multiple protrusions are fixed on the upper brake plate 5. The protrusions slide in contact with the grooves opened on the inner wall of the handle 4. Multiple springs 7 are connected between the upper brake plate 5 and the handle 4.

[0036] In the above technical solution, the protrusion and the groove cooperate to make the upper brake plate 5 slide vertically. When there is no external force, the elastic force of the spring 7 drives the upper brake plate 5 to descend, so that the two brake plates 5 can be locked together to restrict the rotation of the valve stem 3.

[0037] The Y-shaped rod 62 is eccentrically connected to the rotating end of the drive handle 61. Two drive rods 63 are fixedly provided at the other end of the Y-shaped rod 62. Two drive seats 64 are fixedly connected to the top surface of the upper brake plate 5. A sliding inclined surface 65 is provided on the drive seat 64. The drive rod 63 slides in contact with the sliding inclined surface 65.

[0038] In the above technical solution, when the drive handle 61 rotates upward, the Y-shaped rod 62 moves to the left, causing the drive rod 63 to slide against the sliding inclined surface 65, which drives the upper brake plate 5 to rise, thereby canceling the engagement of the two brake plates 5. At this time, rotating the handle 4 can drive the valve stem 3 and the butterfly plate 2 to rotate and adjust.

[0039] A second spring 66 is connected to the side of the drive handle 61 away from the rotating end and the handle 4. After the drive handle 61 is released, the compressed second spring 66 rebounds and drives the drive handle 61 to reset.

[0040] A braking assembly 8 is provided at one end of the handle 4. The braking assembly 8 includes a slider 81. A sliding hole adapted to the slider 81 is provided at the end of the handle 4 away from the rotating end. A T-shaped rod 82 is hinged to the bottom surface of the slider 81. A positioning groove 67 is provided on the drive handle 61 located directly below the T-shaped rod 82. The lower end of the T-shaped rod 82 is located in the positioning groove 67. A guide slope 68 is fixed on one side of the drive handle 61 located in the positioning groove 67. The guide slope 68 is away from the rotating end of the drive handle 61.

[0041] In the above technical solution, when the slider 81 is located on the left side of the sliding hole, the T-shaped rod 82 is vertically arranged and its lower end is located in the positioning groove 67. At this time, the drive handle 61 cannot rotate due to the obstruction of the T-shaped rod 82, thereby avoiding the misoperation of the drive handle 61. When the slider 81 is located on the right side of the sliding hole, the lower end of the T-shaped rod 82 leaves the positioning groove 67 and contacts the guide inclined surface 68. The T-shaped rod 82 is inclined, and the drive handle 61 can be rotated at this time.

[0042] When in use, move slider 81 to the right side of the sliding hole, hold handle 4 and drive handle 61 to rise, Y-shaped rod 62 moves to the left, drive rod 63 slides against sliding inclined surface 65, driving the upper brake plate 5 to rise, and the locking of the two brake plates 5 is canceled. At this time, turn handle 4 to drive valve stem 3 and butterfly plate 2 to rotate and adjust. After butterfly plate 2 rotates to the appropriate angle, release drive handle 61, spring 2 66 drives drive handle 61 to reset, and at the same time spring 1 7 drives upper brake plate 5 to fall and lock with lower brake plate 5 again, restricting the rotation of valve stem 3 and keeping butterfly plate 2 stable.

[0043] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A liquid flow control device, comprising a valve body (1), wherein a butterfly plate (2) is provided in the channel of the valve body (1), and a valve stem (3) is fixedly connected to the butterfly plate (2), wherein the valve stem (3) is rotatably connected to the valve body (1), characterized in that: It also includes a handle (4) fixedly connected to the upper end of the valve stem (3), and two brake plates (5) are sleeved on the upper end of the valve stem (3). The upper handle (4) is vertically slidably connected to the brake plate (5), and the lower brake plate (5) is fixedly connected to the upper end of the valve body (1). A drive component (6) is provided on the lower side of the handle (4). The drive unit (6) includes a drive handle (61) hinged to the handle (4), and a Y-shaped rod (62) is hinged at the rotating end of the drive handle (61). The Y-shaped rod (62) is used to drive the upper brake plate (5) to move.

2. The liquid flow control device according to claim 1, characterized in that: The brake plate (5) includes an annular plate, and multiple locking blocks are fixedly connected to one side of the annular plate in a ring with equal spacing.

3. The liquid flow control device according to claim 1, characterized in that: Multiple protrusions are fixed on the upper brake plate (5), and the protrusions slide in contact with the grooves opened on the inner wall of the handle (4). Multiple springs (7) are connected between the upper brake plate (5) and the handle (4).

4. The liquid flow control device according to claim 1, characterized in that: The Y-shaped rod (62) is eccentrically connected to the rotating end of the drive handle (61). Two drive rods (63) are fixedly provided at the other end of the Y-shaped rod (62). Two drive seats (64) are fixedly connected to the top surface of the brake plate (5) on the upper side. A sliding inclined surface (65) is provided on the drive seat (64). The drive rod (63) slides in contact with the sliding inclined surface (65).

5. The liquid flow control device according to claim 1, characterized in that: The drive handle (61) is connected to the handle (4) on the side away from the rotating end by a spring (66).

6. The liquid flow control device according to claim 1, characterized in that: A braking assembly (8) is provided at one end of the handle (4). The braking assembly (8) includes a slider (81). A sliding hole adapted to the slider (81) is provided at the end of the handle (4) away from the rotating end. A T-shaped rod (82) is hinged to the bottom surface of the slider (81). A positioning groove (67) is provided on the drive handle (61) located directly below the T-shaped rod (82). The lower end of the T-shaped rod (82) is located in the positioning groove (67). A guide slope (68) is fixed on one side of the drive handle (61) located in the positioning groove (67). The guide slope (68) is away from the rotating end of the drive handle (61).

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