Butterfly valve throttling device capable of adjusting flow

Abstract

The utility model relates to the technical field of butterfly valves, and discloses a flow-adjustable butterfly valve throttling device which comprises a valve body, a fixed valve seat is fixed in the valve body, a butterfly plate is arranged in the valve body, a movable valve seat is fixed on the outer wall of the butterfly plate, a sealing shell is fixed above the valve body, an upper shell is fixed above the sealing shell, and the upper shell is connected with the valve body. A valve shaft is installed on one side of the butterfly plate through a bolt, one end of the valve shaft penetrates through the valve body and the upper shell and is inserted into the upper shell, the other end of the valve shaft is connected with an adjusting mechanism, and a sealing gasket is fixed to the contact position of the valve body and the valve shaft. According to the butterfly valve, the valve shaft can be slowly driven to rotate through the adjusting mechanism, the butterfly plate can be driven to rotate when the valve shaft slowly rotates, the flow can be adjusted when the butterfly plate rotates, and therefore the flow can be better adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, and more specifically, to a butterfly valve throttling device capable of adjusting flow. Background Art

[0002] The butterfly valve throttling device realizes throttling control of the flow rate based on changing the cross-sectional area of ​​the fluid channel. When the butterfly plate is in a position perpendicular to the valve body channel (fully closed state), the fluid cannot pass through, and the valve serves to cut off the fluid; as the butterfly plate gradually rotates and opens around the center axis of the valve stem, the cross-sectional area of ​​the fluid channel gradually increases, and the fluid can flow through the valve body, and the flow rate is proportional to the opening of the butterfly plate (rotation angle), that is, the larger the butterfly plate opening, the larger the flow cross-sectional area, and the greater the flow rate of the fluid. By precisely controlling the rotation angle of the butterfly plate, the fluid flow in the pipeline can be accurately adjusted to achieve the purpose of throttling. The existing butterfly valve adjusts the flow of the butterfly valve by directly rotating the valve shaft. This adjustment method is not easy to control the angle of rotation of the butterfly valve, so it is not convenient to adjust the flow. For this reason, we propose a butterfly valve throttling device with adjustable flow. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a butterfly valve throttling device capable of adjusting flow rate to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a butterfly valve throttling device with adjustable flow, comprising a valve body, a fixed valve seat fixed in the valve body, a butterfly plate arranged in the valve body, a movable valve seat fixed on the outer wall of the butterfly plate, a sealing shell fixed above the valve body, an upper shell fixed above the sealing shell, a valve shaft mounted on one side of the butterfly plate by bolts, one end of the valve shaft passes through the valve body and the upper shell and is inserted in the upper shell, and an adjusting mechanism is connected to one end of the valve shaft, and a sealing gasket is fixed at the contact point between the valve body and the valve shaft.

[0005] As a preferred technical solution of the present invention, mounting ring plates are fixed on both sides of the valve body, and a plurality of mounting holes are spaced apart on the mounting ring plates.

[0006] As a preferred technical solution of the present invention, a sealing bearing is connected to the contact point between the sealing housing and the valve shaft, and the sealing housing is filled with fillers.

[0007] As a preferred technical solution of the present invention, support plates are fixed between the two sides of the lower side of the upper shell and the valve body.

[0008] As an optimal technical solution of the present utility model, the adjusting mechanism includes a worm gear, two bearings, and a motor. The worm gear is fixed at one end of the valve shaft, and the two bearings are respectively fixed on the two side walls of the upper shell. A worm is connected to one of the bearings, and one end of the worm passes through the other bearing and is connected to the output shaft of the motor, and the worm and the worm gear are arranged to cooperate with each other.

[0009] As an optimal technical solution of the present invention, a rotating rod is fixed above the worm gear, one end of the rotating rod passes through the upper shell and is fixed with a pointer, and the upper shell and the rotating rod are connected by an upper bearing, and an annular scale mark is opened above the upper shell.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0011] 1. The utility model can slowly drive the valve shaft to rotate through the adjustment mechanism. The slow rotation of the valve shaft can drive the butterfly plate to rotate. The rotation of the butterfly plate can adjust the flow, thereby better adjusting the flow.

[0012] 2. The rotation of the valve shaft of the utility model can drive the pointer to rotate. By observing the angle of the pointer, the opening angle of the butterfly plate can be better understood. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of a butterfly valve throttling device capable of adjusting flow rate according to the present invention;

[0014] Figure 2 This is a schematic diagram of the main structure of a butterfly valve throttling device capable of adjusting flow rate according to the present invention;

[0015] Figure 3 The utility model is a schematic diagram of a top view of a butterfly valve throttling device with adjustable flow.

[0016] In the figure: 1. Valve body; 2. Fixed valve seat; 3. Movable valve seat; 4. Butterfly plate; 5. Valve shaft; 6. Sealing gasket; 7. Sealing housing; 8. Packing; 9. Sealing bearing; 10. Upper housing; 11. Worm gear; 12. Worm; 13. Bearing; 14. Motor; 15. Mounting ring plate; 16. Mounting hole; 17. Support plate; 18. Pointer; 19. Annular scale mark; 20. Turning rod. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] like Figures 1 to 3 As shown, the utility model provides a butterfly valve throttling device with adjustable flow, including a valve body 1, a fixed valve seat 2 is fixed in the valve body 1, a butterfly plate 4 is arranged in the valve body 1, a movable valve seat 3 is fixed to the outer wall of the butterfly plate 4, a sealing shell 7 is fixed above the valve body 1, an upper shell 10 is fixed above the sealing shell 7, support plates 17 are fixed between the two sides of the lower side of the upper shell 10 and the valve body 1, a valve shaft 5 is installed on one side of the butterfly plate 4 by bolts, one end of the valve shaft 5 passes through the valve body 1 and the upper shell 10 and is inserted in the upper shell 10, and one end of the valve shaft 5 is connected to an adjusting mechanism, a sealing gasket 6 is fixed at the contact point between the valve body 1 and the valve shaft 5, and the valve shaft 5 can be slowly driven to rotate by the adjusting mechanism, and the slow rotation of the valve shaft 5 can drive the butterfly plate 4 to rotate, and the rotation of the butterfly plate 4 can adjust the flow, thereby better adjusting the flow.

[0019] Wherein, mounting ring plates 15 are fixed on both sides of the valve body 1 , and a plurality of mounting holes 16 are spaced apart on the mounting ring plates 15 , through which the valve body 1 can be mounted respectively.

[0020] The sealing housing 7 and the valve shaft 5 are connected to a sealing bearing 9 , and the sealing housing 7 is filled with a filler 8 . The filler 8 and the sealing bearing 9 can increase the sealing performance between the sealing housing 7 and the valve body 1 .

[0021] Among them, the adjusting mechanism includes a worm gear 11, two bearings 13, and a motor 14. The worm gear 11 is fixed to one end of the valve shaft 5, and the two bearings 13 are respectively fixed to the two side walls of the upper shell 10. A worm 12 is connected to one of the bearings 13, and one end of the worm 12 passes through the other bearing 13 and is connected to the output shaft of the motor 14. The worm 12 and the worm gear 11 are arranged to cooperate with each other. Starting the motor 14 can drive the worm 12 to rotate, and the rotation of the worm 12 can drive the worm gear 11 to rotate. The rotation of the worm gear 11 can drive the valve shaft 5 to rotate. Since the worm gear 11 rotates one tooth only when the worm 12 rotates one circle, the valve shaft 5 can be driven to rotate slowly, so that the flow rate can be better adjusted.

[0022] Among them, a rotating rod 20 is fixed above the worm gear 11, one end of the rotating rod 20 passes through the upper shell 10 and is fixed with a pointer 18, and the upper shell 10 and the rotating rod 20 are connected by an upper bearing. An annular scale mark 19 is opened above the upper shell 10. The rotation of the worm gear 11 can drive the pointer 18 to rotate. By observing the angle of the pointer 18, the opening angle of the butterfly plate 4 can be better understood.

[0023] The working principle and usage process of the present invention are as follows: by starting the motor 14, the starting motor 14 can drive the worm 12 to rotate, the rotation of the worm 12 can drive the worm wheel 11 to rotate, and the rotation of the worm wheel 11 can drive the valve shaft 5 to rotate. Since the worm 12 rotates one circle before the worm wheel 11 rotates one tooth, the valve shaft 5 can be driven to rotate slowly, so that the flow rate can be better adjusted, and the opening angle of the butterfly plate 4 can be better understood by observing the angle of the pointer 18.

[0024] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A butterfly valve throttling device capable of adjusting flow, comprising a valve body (1), characterized in that: A fixed valve seat (2) is fixed in the valve body (1), a butterfly plate (4) is provided in the valve body (1), a movable valve seat (3) is fixed on the outer wall of the butterfly plate (4), a sealing shell (7) is fixed above the valve body (1), an upper shell (10) is fixed above the sealing shell (7), a valve shaft (5) is mounted on one side of the butterfly plate (4) by bolts, one end of the valve shaft (5) passes through the valve body (1) and the upper shell (10) and is inserted into the upper shell (10), and one end of the valve shaft (5) is connected to an adjusting mechanism, and a sealing gasket (6) is fixed at the contact point between the valve body (1) and the valve shaft (5).

2. The flow-adjustable butterfly valve throttling device according to claim 1, characterized in that: Mounting ring plates (15) are fixed on both sides of the valve body (1), and a plurality of mounting holes (16) are spaced apart on the mounting ring plates (15).

3. The flow-adjustable butterfly valve throttling device according to claim 1, characterized in that: A sealing bearing (9) is connected to the contact point between the sealing housing (7) and the valve shaft (5), and a filler (8) is filled in the sealing housing (7).

4. The flow-adjustable butterfly valve throttling device according to claim 1, characterized in that: Support plates (17) are fixed between the valve body (1) and both sides of the lower side of the upper shell (10).

5. The flow-adjustable butterfly valve throttling device according to claim 1, characterized in that: The regulating mechanism comprises a worm gear (11), two bearings (13), and a motor (14); the worm gear (11) is fixed to one end of the valve shaft (5); the two bearings (13) are respectively fixed to the two side walls of the upper shell (10); a worm (12) is connected to one of the bearings (13); one end of the worm (12) passes through the other bearing (13) and is connected to the output shaft of the motor (14); and the worm (12) and the worm gear (11) are arranged in cooperation with each other.

6. The flow-adjustable butterfly valve throttling device according to claim 5, characterized in that: A rotating rod (20) is fixed above the worm gear (11), one end of the rotating rod (20) passes through the upper housing (10) and is fixed with a pointer (18), and the upper housing (10) and the rotating rod (20) are connected via an upper bearing, and an annular scale mark (19) is provided above the upper housing (10).

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