Worm gear flange butterfly valve

Abstract

The utility model relates to the field of butterfly valves, in particular to a worm gear flange butterfly valve. The utility model provides a worm gear flange butterfly valve which can control the opening and closing of a butterfly plate for indication, is convenient for an operator to intuitively see the opening state, can control the rotation precision of the butterfly plate through bevel gear transmission, and improves the operation precision. A worm gear flange butterfly valve comprises a valve body, connecting flanges, a rotating shaft and the like, the connecting flanges are connected to the front side and the rear side of the valve body, and the rotating shaft is rotationally connected to the middle of the valve body. The first bevel gear rotates to drive the rotating shaft to rotate, so that the butterfly plate rotates, the indicating piece is driven to rotate, the opening and closing angle of the butterfly plate is controlled according to the direction of the indicating piece indicating the scale piece, indication can be carried out when the butterfly plate is controlled to be opened and closed, an operator can conveniently and visually see the opening state, and the working efficiency is improved. And the rotating precision of the butterfly plate can be controlled through bevel gear transmission, and the operation precision is improved.

Description

Technical Field

[0001] The utility model relates to the field of butterfly valves, in particular to a worm gear flange butterfly valve. Background Art

[0002] A butterfly valve is a common industrial valve used to control the fluid flow in a pipeline. It realizes opening and closing by rotating a butterfly plate. Due to its simple structure, convenient operation and low cost, the butterfly valve is widely used in various fluid control systems.

[0003] In the existing worm gear flange butterfly valve, the opening and closing of the butterfly plate are usually directly controlled by a worm gear and worm drive mechanism. However, when controlling the opening and closing of the butterfly plate, the operator cannot intuitively see the opening state of the butterfly plate, and when using the worm gear and worm drive mechanism for control, the adjustment accuracy is low, which is not convenient for precise control and is rather inconvenient.

[0004] Therefore, it is necessary to design a worm gear flange butterfly valve that can indicate when controlling the opening and closing of the butterfly plate, so that the operator can intuitively see the opening state, and can control the rotation accuracy of the butterfly plate through bevel gear transmission to improve the operation accuracy. Summary of the Utility Model

[0005] In order to overcome the disadvantages that in the existing worm gear flange butterfly valve, when controlling the opening and closing of the butterfly plate, the operator cannot intuitively see the opening state of the butterfly plate, and when using the worm gear and worm drive mechanism for control, the adjustment accuracy is low, which is not convenient for precise control and is rather inconvenient, the utility model provides a worm gear flange butterfly valve that can indicate when controlling the opening and closing of the butterfly plate, so that the operator can intuitively see the opening state, and can control the rotation accuracy of the butterfly plate through bevel gear transmission to improve the operation accuracy.

[0006] The technical implementation scheme of the utility model is: a worm gear flange butterfly valve, comprising a valve body, a connecting flange, a rotating shaft, a butterfly plate, a housing, an indicating component and a transmission component. Connecting flanges are connected to both the front and rear sides of the valve body. A rotating shaft is rotatably connected to the middle of the valve body. A butterfly plate is connected to the rotating shaft. A housing is connected to the valve body. The housing is rotatably connected to the rotating shaft. An indicating component is arranged between the housing and the upper part of the rotating shaft. A transmission component is arranged between the left part of the housing and the rotating shaft.

[0007] Optionally, the indicating component includes a cover plate, a scale piece and an indicating piece. The cover plate is connected to the upper side of the housing. The scale piece is connected to the upper side of the cover plate. The indicating piece is connected to the upper part of the rotating shaft.

[0008] Optionally, the transmission component includes a first bevel gear, a second bevel gear and a handle. The handle is rotatably connected to the left part of the housing. The first bevel gear is connected to the right side of the handle. The second bevel gear is connected to the lower part of the rotating shaft. The first bevel gear meshes with the second bevel gear.

[0009] Optionally, a soft pad is provided on the handle.

[0010] Optionally, it further includes a liquid spraying rack and a liquid guiding pipe. The upper part of the housing is connected with the liquid spraying rack, and the right side of the liquid spraying rack is connected with the liquid guiding pipe.

[0011] Optionally, it further includes a check valve, and the check valve is connected to the liquid guiding pipe.

[0012] Compared with the prior art, the utility model has the following advantages: 1. By the rotation of the first bevel gear, the rotating shaft is driven to rotate, so that the butterfly plate rotates, driving the indicating member to rotate. According to the direction of the indicating member indicating the scale member, the opening and closing angle of the butterfly plate is controlled, achieving the effect of being able to indicate when the butterfly plate opens and closes, facilitating the operator to visually see the opening state, and being able to control the rotation accuracy of the butterfly plate through bevel gear transmission, improving the operation accuracy.

[0013] 2. By externally connecting a lubricant through the liquid guiding pipe, the lubricant is sprayed onto the first bevel gear through the liquid spraying rack, and the check valve is used to limit the backflow of the lubricant, achieving the effect of being able to spray lubricant on the bevel gear, extending the service life of the bevel gear, reducing frequent replacement and maintenance caused by wear, and facilitating smoother transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0015] Figure 2 It is a structural schematic diagram of the utility model.

[0016] Figure 3 It is a partially enlarged three-dimensional structural schematic diagram of the utility model.

[0017] The meanings of the reference numerals in the drawings: 1: valve body, 2: connecting flange, 3: rotating shaft, 4: butterfly plate, 5: housing, 6: cover plate, 7: scale member, 8: indicating member, 9: first bevel gear, 91 - second bevel gear, 10: handle, 11: liquid spraying rack, 12: liquid guiding pipe, 13: check valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0019] A worm gear flange butterfly valve, as Figures 1 - 3As shown in the figure, it includes a valve body 1, a connecting flange 2, a rotating shaft 3, a butterfly plate 4, a housing 5, an indicating component and a transmission component. Connecting flanges 2 are connected to both the front and rear sides of the valve body 1. A rotating shaft 3 is rotatably connected to the middle of the valve body 1. A butterfly plate 4 is connected to the rotating shaft 3. A housing 5 is connected to the valve body 1. The housing 5 is rotatably connected to the rotating shaft 3. An indicating component is provided between the housing 5 and the upper part of the rotating shaft 3. A transmission component is provided between the left part of the housing 5 and the rotating shaft 3.

[0020] As Figures 1 - 3 shown in the figure, the indicating component includes a cover plate 6, a scale piece 7 and an indicating piece 8. The cover plate 6 is connected to the upper side of the housing 5. The scale piece 7 is connected to the upper side of the cover plate 6. The indicating piece 8 is connected to the upper part of the rotating shaft 3.

[0021] As Figures 1 - 3 shown in the figure, the transmission component includes a first bevel gear 9, a second bevel gear 91 and a handle 10. The handle 10 is rotatably connected to the left part of the housing 5. A soft pad is provided on the handle 10 for easy rotation. The first bevel gear 9 is connected to the right side of the handle 10. The second bevel gear 91 is connected to the lower part of the rotating shaft 3. The first bevel gear 9 and the second bevel gear 91 are meshed with each other.

[0022] As Figures 1 - 3 shown in the figure, it further includes a liquid spraying rack 11, a liquid guiding pipe 12 and a check valve 13. The liquid spraying rack 11 is connected to the upper part of the housing 5. The liquid guiding pipe 12 is connected to the right side of the liquid spraying rack 11. The check valve 13 is connected to the liquid guiding pipe 12.

[0023] When using this device, first install the valve body 1 on the water pipe through the connecting flange 2, and then rotate the handle 10 to drive the first bevel gear 9 to rotate. The first bevel gear 9 and the second bevel gear 91 are engaged to drive the rotating shaft 3 to rotate, so that the butterfly plate 4 rotates and opens. While the rotating shaft 3 rotates, it drives the indicating piece 8 to rotate. The opening and closing angle of the butterfly plate 4 is controlled according to the direction of the indicating piece 8 indicating the scale piece 7, so as to be able to indicate when the butterfly plate 4 opens and closes, facilitating the operator to directly see the opening state, and being able to control the rotation precision of the butterfly plate 4 through bevel gear transmission, improving the operation precision. When the first bevel gear 9 and the second bevel gear 91 are used for a long time, an external lubricant can be connected through the liquid guiding pipe 12, so that the lubricant is sprayed onto the first bevel gear 9 and the second bevel gear 91 through the liquid spraying rack 11. The check valve 13 restricts the backflow of the lubricant, so as to be able to spray lubricant on the bevel gears, extending the service life of the bevel gears, reducing frequent replacement and maintenance caused by wear, and facilitating smoother transmission.

[0024] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes can be made in these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A worm gear flange butterfly valve, characterized in that: It includes a valve body (1), a connecting flange (2), a rotating shaft (3), a butterfly plate (4), a housing (5), an indicating component and a transmission component. Connecting flanges (2) are connected to both the front and rear sides of the valve body (1). A rotating shaft (3) is rotatably connected to the middle of the valve body (1). A butterfly plate (4) is connected to the rotating shaft (3). A housing (5) is connected to the valve body (1). The housing (5) is rotatably connected to the rotating shaft (3). An indicating component is provided between the upper part of the housing (5) and the rotating shaft (3). A transmission component is provided between the left part of the housing (5) and the rotating shaft (3).

2. A worm gear flange butterfly valve according to claim 1, characterized in that: The indicating component includes a cover plate (6), a scale piece (7) and an indicating piece (8). The cover plate (6) is connected to the upper side of the housing (5). The scale piece (7) is connected to the upper side of the cover plate (6). The indicating piece (8) is connected to the upper part of the rotating shaft (3).

3. A worm gear flange butterfly valve according to claim 1, characterized in that: The transmission component includes a first bevel gear (9), a second bevel gear (91) and a handle (10). The handle (10) is rotatably connected to the left part of the housing (5). The first bevel gear (9) is connected to the right side of the handle (10). The second bevel gear (91) is connected to the lower part of the rotating shaft (3). The first bevel gear (9) meshes with the second bevel gear (91).

4. A worm gear flange butterfly valve according to claim 3, characterized in that: A soft pad is provided on the handle (10).

5. A worm gear flange butterfly valve according to claim 1, characterized in that: It further includes a liquid spraying rack (11) and a liquid guiding pipe (12). The liquid spraying rack (11) is connected to the upper part of the housing (5). The liquid guiding pipe (12) is connected to the right side of the liquid spraying rack (11).

6. A worm gear flange butterfly valve according to claim 5, characterized in that: It further includes a check valve (13). The check valve (13) is connected to the liquid guiding pipe (12).

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