A fast closing butterfly valve type pressure regulating device

Abstract

The utility model discloses a fast-closing butterfly valve type pressure regulating device, which relates to the technical field of butterfly valve pressure regulating, and comprises a butterfly valve, wherein an adjusting plate is installed at the discharge end of the butterfly valve, and a discharge port for discharging is provided on the inner side of the adjusting plate, and a plurality of exhaust holes are provided on the end surface of the adjusting plate, and the exhaust holes are distributed in an annular shape and at intervals between the exhaust holes, and an air cavity connected to the exhaust hole is provided inside the adjusting plate, and the bottom end of the air cavity is connected to an air inlet hole connected to the inner cavity of the butterfly valve. The utility model realizes the regulation of the pressure of the inner cavity of the butterfly valve by setting the exhaust hole, and further realizes the regulation of the opening and closing speed of the butterfly valve.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valve pressure regulation, in particular to a fast-closing butterfly valve type pressure regulating device. 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 part (valve disc or butterfly plate) is a disc, which rotates around the valve axis to achieve opening and closing. The butterfly valve can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media, and mainly plays a cutting and throttling role in the pipeline. The butterfly valve opening and closing part is a disc-shaped butterfly plate, which rotates around its own axis in the valve body to achieve the purpose of opening and closing or regulation.

[0003] The starting speed of the butterfly plate of the butterfly valve's opening and closing part will be affected by the residual gas pressure in the butterfly valve's inner cavity, that is, the greater the residual gas pressure in the butterfly valve's inner cavity, the slower the opening and closing speed of the butterfly plate, and vice versa. The butterfly valve has different requirements for the opening and closing speed of the butterfly plate under different use conditions. There is a quick exhaust valve in the prior art, which can quickly discharge the residual gas in the inner cavity, so that the opening and closing speed of the butterfly plate reaches the maximum, but it cannot be adaptively adjusted, that is, it cannot adjust the pressure of the residual gas in the inner cavity, which results in the inability to adjust the opening and closing speed of the butterfly plate. For this reason, we propose a quick-closing butterfly valve type pressure regulating device. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a fast-closing butterfly valve type pressure regulating device to solve the technical problems mentioned in the above background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a quick-closing butterfly valve type pressure regulating device, comprising a butterfly valve, an adjusting plate is installed at the discharge end of the butterfly valve, and a discharge port for discharging is provided on the inner side of the adjusting plate, a plurality of exhaust holes are provided on the end face of the adjusting plate, and the plurality of exhaust holes are distributed in a ring shape and at intervals between each other, an air cavity connected to the exhaust hole is provided inside the adjusting plate, and the bottom end of the air cavity is connected to an air inlet hole connected to the inner cavity of the butterfly valve.

[0006] By adopting the above technical solution, the pressure in the inner cavity of the butterfly valve is regulated, and then the opening and closing speed of the butterfly valve is regulated.

[0007] The utility model is further configured that a sealing plate is installed at the end of each group of exhaust holes, and the sealing plate is arranged closely against the outer wall of the adjustment plate.

[0008] By adopting the above technical solution, the exhaust hole can be sealed.

[0009] The utility model is further configured such that the top end of the sealed plate is fixedly connected with a rotating shaft extending into the interior of the adjusting plate, and the rotating shaft is slidably connected to the inner wall of the adjusting plate, the end of the rotating shaft is fixedly connected with a driven gear, and a driving ring for driving the driven gear is provided on the outer side of the driven gear, and the driving ring is connected to an external driving source.

[0010] By adopting the above technical solution, the sealing plate can be driven.

[0011] The utility model is further configured that two groups of symmetrically arranged first driving tooth walls, two groups of symmetrically arranged second driving tooth walls and two groups of symmetrically arranged third driving tooth walls are fixed on the inner side of the driving ring.

[0012] By adopting the above technical solution, a driving effect is achieved on the driven gear.

[0013] The utility model is further configured such that the interval angle between the second driving tooth wall and the first driving tooth wall is twenty degrees, and the interval angle between the third driving tooth wall and the second driving tooth wall is forty degrees.

[0014] By adopting the above technical solution, multiple groups of sealed plates can be intermittently driven.

[0015] In summary, the utility model mainly has the following beneficial effects:

[0016] 1. The utility model provides an exhaust hole, an adjustment plate, an air cavity and an air inlet hole. First, the residual gas in the inner cavity of the butterfly valve can enter the air cavity through the air inlet hole and be discharged through the exhaust hole, thereby achieving the discharge of the residual gas in the inner cavity, that is, achieving the pressure dissipation effect of the inner cavity, so that the opening and closing speed of the butterfly plate reaches the maximum, and the purpose of adjusting the opening and closing speed of the butterfly valve is achieved;

[0017] 2. The utility model sets a driven gear, a driving ring and a driving tooth wall. When different opening and closing speeds are required, the number of vents opened can be controlled to adjust. Specifically, the driving source is started, and the driving source drives the driving ring to rotate. At this time, the rotation angle of the driving source is set according to the required opening and closing speed to adjust the pressure of the inner cavity. Specifically, if the required opening and closing speed is one-third of the full speed, the driving source is controlled to rotate 30 degrees. In this process, the two sets of first driving driving tooth walls will drive the two sets of closed plates, thereby achieving The opening of two groups of exhaust holes realizes one third of the opening and closing speed. If the required opening and closing speed is two thirds of the full speed, the driving source is controlled to rotate 50 degrees. During this process, the two groups of first driving tooth walls and the second driving tooth walls will drive the four groups of sealed plates, thereby realizing the opening of the four groups of exhaust holes, that is, realizing two thirds of the opening and closing speed. If the required opening and closing speed is full speed, the driving source is controlled to rotate 90 degrees. During this process, all the driving tooth walls will drive all the sealed plates, thereby realizing the opening of all the exhaust holes, that is, realizing the full speed of opening and closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the air cavity structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the closed plate structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the driving structure of the utility model;

[0022] Figure 5 This is a schematic diagram of the drive ring structure of the utility model.

[0023] In the figure: 1. butterfly valve; 2. adjusting plate; 3. discharge port; 4. exhaust hole; 5. air cavity; 6. air inlet hole; 7. sealing plate; 8. driven gear; 9. driving ring; 10. first driving tooth wall; 11. second tooth wall; 12. third driving tooth wall. DETAILED DESCRIPTION

[0024] 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. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0025] The following describes an embodiment of the utility model based on its overall structure.

[0026] A fast closing butterfly valve type pressure regulating device, such as Figure 1-5As shown, it includes a butterfly valve 1, an adjusting plate 2 is installed at the discharge end of the butterfly valve 1, and a discharge port 3 for discharging is opened on the inner side of the adjusting plate 2, a plurality of exhaust holes 4 are opened on the end surface of the adjusting plate 2, and the plurality of exhaust holes 4 are distributed in a ring shape and at intervals, an air cavity 5 connected to the exhaust hole 4 is opened inside the adjusting plate 2, and the bottom end of the air cavity 5 is connected to an air inlet 6 connected to the inner cavity of the butterfly valve 1;

[0027] Furthermore, in this embodiment, a sealing plate 7 is installed at the end of each group of exhaust holes 4, and the sealing plate 7 is arranged closely against the outer wall of the adjustment plate 2.

[0028] See also Figure 3-4 The top of the sealed plate 7 is fixedly connected with a rotating shaft extending to the inside of the adjusting plate 2, and the rotating shaft is slidably connected to the inner wall of the adjusting plate 2. The end of the rotating shaft is fixedly connected with a driven gear 8, and a driving ring 9 for driving the driven gear 8 is provided on the outer side of the driven gear 8. The driving ring 9 is connected to an external driving source to realize the driving of the sealed plate 7.

[0029] See also Figure 5 Two groups of symmetrically arranged first drive tooth walls 10, two groups of symmetrically arranged second drive tooth walls 11 and two groups of symmetrically arranged third drive tooth walls 12 are fixed on the inner side of the drive ring 9. The interval angle between the second drive tooth walls 11 and the first drive tooth walls 10 is twenty degrees, and the interval angle between the third drive tooth walls 12 and the second drive tooth walls 11 is forty degrees, thereby realizing intermittent driving of multiple groups of closed plates 7.

[0030] The working principle of the utility model is as follows: first, the residual gas in the inner cavity of the butterfly valve 1 can enter the air cavity 5 through the air inlet hole 6 and be discharged through the exhaust hole 4, thereby achieving the discharge of the residual gas in the inner cavity, that is, achieving the pressure dissipation effect of the inner cavity, so that the opening and closing speed of the butterfly plate reaches the maximum, achieving the purpose of adjusting the opening and closing speed of the butterfly valve 1

[0031] Furthermore, when different opening and closing speeds are required, the number of the vent holes 4 opened can be controlled to adjust the speed. Specifically, the driving source is started, and the driving source drives the driving ring 9 to rotate. At this time, the rotation angle of the driving source is set according to the required opening and closing speed to adjust the pressure of the inner cavity.

[0032] Specifically, if the required opening and closing speed is one third of the full speed, the driving source is controlled to rotate 30 degrees. During this process, the two sets of first driving tooth walls 10 will drive the two sets of sealing plates 7, thereby opening the two sets of exhaust holes 4, that is, one third of the opening and closing speed is achieved;

[0033] If the required opening and closing speed is two-thirds of the full speed, the driving source is controlled to rotate 50 degrees. During this process, the two sets of first driving tooth walls 10 and the second driving tooth walls 11 will drive the four sets of sealing plates 7, thereby opening the four sets of exhaust holes 4, that is, achieving two-thirds of the opening and closing speed;

[0034] If the required opening and closing speed is full speed, the driving source is controlled to rotate 90 degrees. During this process, all the driving tooth walls will drive all the sealing plates 7, thereby opening all the exhaust holes 4, that is, achieving full speed opening and closing speed.

[0035] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A fast-closing butterfly valve type pressure regulating device, comprising a butterfly valve (1), characterized in that: An adjusting plate (2) is installed at the discharge end of the butterfly valve (1), and a discharge port (3) for discharging is provided on the inner side of the adjusting plate (2), a plurality of exhaust holes (4) are provided on the end surface of the adjusting plate (2), and the plurality of exhaust holes (4) are arranged in a circular shape and spaced apart from each other, an air cavity (5) connected to the exhaust holes (4) is provided inside the adjusting plate (2), and the bottom end of the air cavity (5) is connected to an air inlet hole (6) connected to the inner cavity of the butterfly valve (1).

2. A fast closing butterfly valve type pressure regulating device according to claim 1, characterized in that: A sealing plate (7) is installed at the end of each group of exhaust holes (4), and the sealing plate (7) is arranged in close contact with the outer wall of the adjustment plate (2).

3. A fast closing butterfly valve type pressure regulating device according to claim 2, characterized in that: The top end of the sealing plate (7) is fixedly connected to a rotating shaft extending into the interior of the adjusting plate (2), and the rotating shaft is slidably connected to the inner wall of the adjusting plate (2).

4. A fast closing butterfly valve type pressure regulating device according to claim 3, characterized in that: A driven gear (8) is fixedly connected to the end of the rotating shaft, and a driving ring (9) for driving the driven gear (8) is arranged on the outer side of the driven gear (8).

5. A fast closing butterfly valve type pressure regulating device according to claim 4, characterized in that: The driving ring (9) is connected to an external driving source.

6. A fast closing butterfly valve type pressure regulating device according to claim 4, characterized in that: Two groups of symmetrically arranged first drive tooth walls (10), two groups of symmetrically arranged second drive tooth walls (11) and two groups of symmetrically arranged third drive tooth walls (12) are fixed on the inner side of the drive ring (9).

7. A fast closing butterfly valve type pressure regulating device according to claim 6, characterized in that: The interval angle between the second driving tooth wall (11) and the first driving tooth wall (10) is 20 degrees, and the interval angle between the third driving tooth wall (12) and the second driving tooth wall (11) is 40 degrees.

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