Butterfly valve convenient to adjust

Abstract

The utility model discloses a butterfly valve convenient to adjust, and relates to the technical field of butterfly valves. The butterfly valve convenient to adjust comprises a butterfly valve body, and a driving box is fixedly installed on the butterfly valve body; the butterfly valve adjusting assembly comprises a valve rod, the lower end of the valve rod is fixedly connected with a butterfly plate, the surface of the valve rod is rotationally sleeved with a worm gear, and the surface of the valve rod is fixedly connected with two fixing strips. The surface of the valve rod is slidably sleeved with a sliding sleeve, the lower end of the sliding sleeve is fixedly connected with a first gear, two sliding grooves are formed in the inner wall of the sliding sleeve, the lower end of the first gear is fixedly connected with three connecting blocks, three grooves are formed in the surface of a worm wheel, and the connecting blocks are clamped with the corresponding grooves, so that separation and contact of the first gear and the worm wheel are facilitated; the transmission mode of the valve rod can be conveniently adjusted, the opening and closing angle of the butterfly plate can be conveniently adjusted, the bearing capacity of a transmission mechanism can be conveniently improved under the impact of large flow, the situation that machine parts are damaged due to too large opening and closing force is effectively avoided, and the service life of the butterfly valve is prolonged.

Description

Technical Field

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

[0002] Valves are control components in fluid delivery systems with functions such as shutoff, regulation, diversion, backflow prevention, pressure stabilization, diversion or overflow pressure relief. Valves used in fluid control systems come in a wide variety of types and specifications, from the simplest shut-off valves to the various valves used in extremely complex automatic control systems.

[0003] Butterfly valve is one of many types of valves. Butterfly valve is also called flap valve. It is one of the most widely used valves at present. However, when the butterfly valve is regulating the flow, the valve plate is often affected by the flow impact, especially under the impact of large flow, which makes it difficult for the butterfly valve to accurately adjust the flow, affecting the use effect of the butterfly valve. For this reason, the utility model proposes a new solution. Utility Model Content

[0004] The purpose of the present utility model is to solve at least one of the technical problems existing in the prior art and to provide a butterfly valve that is easy to adjust, which can solve the problem that when the current butterfly valve is adjusting the flow, the valve plate is often impacted by the flow, especially under the impact of large flow, which makes it difficult for the butterfly valve to accurately adjust the flow, thereby affecting the use effect of the butterfly valve.

[0005] To achieve the above object, the utility model provides the following technical solutions: a butterfly valve that is easy to adjust, comprising a butterfly valve body, on which a drive box is fixedly mounted;

[0006] The butterfly valve regulating assembly is arranged inside the driving box. The butterfly valve regulating assembly includes a valve stem, which is rotatably connected to the inside of the driving box. The lower end of the valve stem is fixedly connected to a butterfly plate. A worm gear is rotatably sleeved on the surface of the valve stem. The surface of the valve stem is fixedly connected to two fixing bars.

[0007] The surface of the valve stem is slidably sleeved with a sliding sleeve, the lower end of the sliding sleeve is fixedly connected to a first gear, the first gear is slidably connected to the valve stem, the inner wall of the sliding sleeve is provided with two sliding grooves, two fixing bars are slidably connected to the corresponding sliding grooves respectively, and both fixing bars are slidably connected to the first gear;

[0008] The interior of the drive box is rotatably connected to a first transmission handwheel, the surface of the first transmission handwheel is fixedly connected to a worm, and the worm is engaged with the valve stem;

[0009] The lower end of the first gear is fixedly connected with three connecting blocks, and the surface of the worm gear is provided with three grooves, and the three connecting blocks are respectively engaged with the corresponding grooves.

[0010] Preferably, the sliding sleeve rotates and passes through the top surface of the drive box, and an annular groove is provided on the upper end surface of the sliding sleeve.

[0011] Preferably, the first transmission handwheel extends out of a drive box at one end away from the valve stem, the drive box is rotatably connected to a second transmission handwheel, and the second transmission handwheel extends into the interior of the drive box;

[0012] A fixed plate is fixedly connected to the surface of the second transmission handwheel, and a second gear is fixedly connected to the surface of the second transmission handwheel, and the second gear is meshed with the first gear.

[0013] Preferably, flanges are fixedly connected to the front and rear ends of the butterfly valve body respectively.

[0014] Preferably, the butterfly plate is arranged inside the butterfly valve body and contacts and seals with the inner wall of the butterfly valve body.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The butterfly valve with easy adjustment is connected with the corresponding groove through the connecting block, which facilitates the separation and contact of the first gear and the worm gear, the adjustment of the transmission mode of the valve stem, the adjustment of the opening and closing angle of the butterfly plate, and the improvement of the bearing capacity of the transmission mechanism under the impact of large flow, effectively avoiding damage to the machine parts due to excessive opening and closing force, and improving the service life of the butterfly valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a schematic diagram of the structure of a conveniently adjustable butterfly valve of the utility model;

[0019] Figure 2 This is a schematic diagram of the drive box of the utility model;

[0020] Figure 3 This is a schematic diagram of the groove of the utility model;

[0021] Figure 4 This is a schematic diagram of the fixing bar of the utility model.

[0022] Figure numerals: 1. butterfly valve body; 2. flange; 3. drive box; 4. first transmission handwheel; 5. worm; 6. valve stem; 7. butterfly plate; 8. worm gear; 9. fixing bar; 10. first gear; 11. connecting block; 12. groove; 13. sliding sleeve; 14. slide groove; 15. fixing plate; 16. second gear; 17. second transmission handwheel. DETAILED DESCRIPTION

[0023] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0024] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0025] In the description of this utility model, terms such as "greater than," "less than," and "exceed" are understood to exclude the number indicated, while terms such as "above," "below," and "within" are understood to include the number indicated. The terms "first" and "second" are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or as implicitly specifying the number or order of the technical features indicated.

[0026] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0027] See also Figure 1-4 The utility model provides a technical solution: a butterfly valve that is easy to adjust, including a butterfly valve body 1, a drive box 3 fixedly mounted on the butterfly valve body 1, a butterfly valve regulating assembly, the butterfly valve regulating assembly is arranged inside the drive box 3, the butterfly valve regulating assembly includes a valve stem 6, the valve stem 6 is rotatably connected to the inside of the drive box 3, the lower end of the valve stem 6 is fixedly connected to a butterfly plate 7, the surface of the valve stem 6 is rotatably sleeved with a worm gear 8, the surface of the valve stem 6 is fixedly connected to two fixing bars 9, the surface of the valve stem 6 is slidably sleeved with a sliding sleeve 13, and the lower end of the sliding sleeve 13 is fixedly connected to a first gear 10. The first gear 10 is slidably connected to the valve stem 6. Two sliding grooves 14 are provided on the inner wall of the sliding sleeve 13. The two fixing bars 9 are slidably connected to the corresponding sliding grooves 14 respectively. The two fixing bars 9 are both slidably connected to the first gear 10. The internal rotation of the drive box 3 is connected to the first transmission handwheel 4. The surface of the first transmission handwheel 4 is fixedly connected to the worm 5. The worm 5 is engaged with the valve stem 6. The lower end of the first gear 10 is fixedly connected to three connecting blocks 11. The surface of the worm wheel 8 is provided with three grooves 12. The three connecting blocks 11 are respectively engaged with the corresponding grooves 12.

[0028] The sleeve 13 rotates and passes through the top surface of the drive box 3. An annular groove is provided on the upper end surface of the sleeve 13. The first transmission handwheel 4 extends out of the drive box 3 at one end away from the valve stem 6. The drive box 3 is rotatably connected to the second transmission handwheel 17. The second transmission handwheel 17 extends to the interior of the drive box 3. The surface of the second transmission handwheel 17 is fixedly connected to the fixed plate 15. The surface of the second transmission handwheel 17 is fixedly connected to the second gear 16. The second gear 16 is meshed with the first gear 10.

[0029] Flanges 2 are fixedly connected to the front and rear ends of the butterfly valve body 1 respectively. The butterfly plate 7 is arranged inside the butterfly valve body 1 and contacts and seals with the inner wall of the butterfly valve body 1.

[0030] When using the device, first install the butterfly valve on the pipeline, and fix and seal it with the corresponding pipeline box through the flange 2. In the initial state, the butterfly valve is in a closed state, and the second gear 16 is engaged with the first gear 10. When the butterfly plate 7 needs to be opened, the second transmission handwheel 17 is rotated to drive the fixed disk 15 and the second gear 16 to rotate, the second gear 16 drives the first gear 10 to rotate, the first gear 10 drives the fixing bar 9 and the valve stem 6 to rotate, the valve stem 6 drives the sliding sleeve 13 to rotate, and the valve stem 6 drives the butterfly plate 7 to rotate, so that the butterfly plate 7 rotates inside the butterfly valve body 1, and the butterfly valve is opened, which is convenient for closing and opening the butterfly valve.

[0031] Since the opening and closing angles of the butterfly valve need to be precisely controlled during production and life, and since a large flow of liquid may be transported inside the pipeline during production and life, the butterfly plate 7 is subjected to a large impact. Using gear transmission alone is efficient and can open and close quickly, but it may be laborious and inconvenient to open or close the butterfly valve under the impact of a large flow. At this time, the sleeve 13 is pressed downward, and the first transmission handwheel 4 is rotated to drive the worm 5 to rotate. The worm 5 drives the worm wheel 8 to rotate so that the connecting block 11 is inserted into the corresponding groove 12, so that the connecting block 11 is engaged with the corresponding groove 12, which is convenient for limiting the first gear 10 and the worm wheel 8. The self-locking property of the worm 5 and the worm wheel 8 makes it easy to maintain the opening and closing angles of the butterfly plate 7 under the impact of a large flow.

[0032] At the same time, the first transmission handwheel 4 and the worm 5 are rotated again to drive the worm wheel 8 to rotate, the worm wheel 8 drives the connecting block 11 to rotate, the connecting block 11 drives the first gear 10 to rotate, the first gear 10 drives the fixing bar 9 and the valve stem 6 to rotate, the valve stem 6 drives the sliding sleeve 13 to rotate, and the valve stem 6 drives the butterfly plate 7 to rotate, so as to facilitate the adjustment of the opening and closing angle of the butterfly plate 7, so that the butterfly plate 7 can maintain the opening and closing angle under the impact of large flow, thereby improving the use effect and opening and closing efficiency of the butterfly valve, improving the efficiency of the butterfly valve, improving the carrying capacity of the transmission mechanism, effectively avoiding damage to the machine parts due to excessive opening and closing force, and improving the service life of the butterfly valve.

[0033] Furthermore, by engaging the connecting block 11 with the corresponding groove 12, it is convenient to separate and contact the first gear 10 and the worm gear 8, to adjust the transmission mode of the valve stem 6, to adjust the opening and closing angles of the butterfly plate 7, and to improve the carrying capacity of the transmission mechanism under the impact of large flow, effectively avoiding damage to the machine parts due to excessive opening and closing force, and improving the service life of the butterfly valve.

[0034] By using the sliding sleeve 13, the sliding groove 14, the fixing bar 9 and the first gear 10, the second gear 16 and the first gear 10 are easily engaged, and the second transmission hand wheel 17 is used to open and close the butterfly plate 7, thereby improving the practicality of the butterfly valve and improving the efficiency of the butterfly valve.

[0035] Working principle: When using the device, first install the butterfly valve on the pipeline, and fix and seal it with the corresponding pipeline box through the flange 2. In the initial state, the butterfly valve is in a closed state, and the second gear 16 is engaged with the first gear 10. When the butterfly plate 7 needs to be opened, the second transmission handwheel 17 is rotated to drive the fixed plate 15 and the second gear 16 to rotate, and the second gear 16 drives the first gear 10 to rotate. The first gear 10 drives the fixed bar 9 and the valve stem 6 to rotate, and the valve stem 6 drives the sliding sleeve 13 to rotate. The valve stem 6 drives the butterfly plate 7 to rotate, so that the butterfly plate 7 rotates inside the butterfly valve body 1, and the butterfly valve is opened, which is convenient for closing and opening the butterfly valve.

[0036] Since the opening and closing angles of the butterfly valve need to be precisely controlled during production and life, and since a large flow of liquid may be transported inside the pipeline during production and life, the butterfly plate 7 is subjected to a large impact. Using gear transmission alone is efficient and can open and close quickly, but it may be laborious and inconvenient to open or close the butterfly valve under the impact of a large flow. At this time, the sleeve 13 is pressed downward, and the first transmission handwheel 4 is rotated to drive the worm 5 to rotate. The worm 5 drives the worm wheel 8 to rotate so that the connecting block 11 is inserted into the corresponding groove 12, so that the connecting block 11 is engaged with the corresponding groove 12, which is convenient for limiting the first gear 10 and the worm wheel 8. The self-locking property of the worm 5 and the worm wheel 8 makes it easy to maintain the opening and closing angles of the butterfly plate 7 under the impact of a large flow.

[0037] At the same time, the first transmission handwheel 4 and the worm 5 are rotated again to drive the worm wheel 8 to rotate, the worm wheel 8 drives the connecting block 11 to rotate, the connecting block 11 drives the first gear 10 to rotate, the first gear 10 drives the fixing bar 9 and the valve stem 6 to rotate, the valve stem 6 drives the sliding sleeve 13 to rotate, and the valve stem 6 drives the butterfly plate 7 to rotate, so as to facilitate the adjustment of the opening and closing angle of the butterfly plate 7, so that the butterfly plate 7 can maintain the opening and closing angle under the impact of large flow, thereby improving the use effect and opening and closing efficiency of the butterfly valve, improving the efficiency of the butterfly valve, improving the carrying capacity of the transmission mechanism, effectively avoiding damage to the machine parts due to excessive opening and closing force, and improving the service life of the butterfly valve.

[0038] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A butterfly valve that is easy to adjust, characterized by: It comprises a butterfly valve body (1), on which a drive box (3) is fixedly mounted; A butterfly valve regulating assembly is provided inside a driving box (3), and comprises a valve stem (6), the valve stem (6) being rotatably connected to the inside of the driving box (3), a butterfly plate (7) being fixedly connected to the lower end of the valve stem (6), a worm gear (8) being rotatably sleeved on the surface of the valve stem (6), and two fixing bars (9) being fixedly connected to the surface of the valve stem (6); The surface of the valve stem (6) is slidably sleeved with a sliding sleeve (13), the lower end of the sliding sleeve (13) is fixedly connected to a first gear (10), the first gear (10) is slidably connected to the valve stem (6), the inner wall of the sliding sleeve (13) is provided with two sliding grooves (14), two fixing bars (9) are slidably connected to the corresponding sliding grooves (14), and the two fixing bars (9) are both slidably connected to the first gear (10); The interior of the drive box (3) is rotatably connected to a first transmission handwheel (4), a surface of the first transmission handwheel (4) is fixedly connected to a worm (5), and the worm (5) is meshed with a valve stem (6); The lower end of the first gear (10) is fixedly connected with three connecting blocks (11), and the surface of the worm wheel (8) is provided with three grooves (12), and the three connecting blocks (11) are respectively engaged with the corresponding grooves (12).

2. The conveniently adjustable butterfly valve according to claim 1, characterized in that: The sliding sleeve (13) rotates and penetrates the top surface of the driving box (3), and an annular groove is formed on the upper end surface of the sliding sleeve (13).

3. The conveniently adjustable butterfly valve according to claim 1, characterized in that: One end of the first transmission handwheel (4) away from the valve stem (6) extends out of the drive box (3); a second transmission handwheel (17) is rotatably connected to the drive box (3); and the second transmission handwheel (17) extends into the interior of the drive box (3); The surface of the second transmission hand wheel (17) is fixedly connected to a fixed disk (15), the surface of the second transmission hand wheel (17) is fixedly connected to a second gear (16), and the second gear (16) is meshed with the first gear (10).

4. The conveniently adjustable butterfly valve according to claim 1, characterized in that: The front and rear ends of the butterfly valve body (1) are respectively fixedly connected with flanges (2).

5. The conveniently adjustable butterfly valve according to claim 1, characterized in that: The butterfly plate (7) is arranged inside the butterfly valve body (1) and contacts and seals with the inner wall of the butterfly valve body (1).

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