Butterfly valve control device

Abstract

The utility model relates to the technical field of butterfly valves, provides a butterfly valve control device, and solves the problem of low flow regulation precision caused by design defects of an existing butterfly valve. The valve comprises a valve body, two rotating assemblies are arranged in the valve body, each rotating assembly comprises a valve plate and a rotating rod, each valve plate is semicircular, each valve plate is provided with a straight edge and an arc-shaped edge, each rotating rod is arranged in the straight edge of each valve plate, a high angle is arranged on the straight edge of each valve plate, and each rotating rod is arranged on the arc-shaped edge of each valve plate. A notch is formed in each high angle, and the notches are formed in the sides, close to each other, of the high angles; different from a circular butterfly plate of an existing butterfly valve, the two semicircular valve plates are arranged in the valve body, and during adjustment, the flow adjustment precision can be higher by adjusting the rotation angles of the different valve plates respectively.

Description

TECHNICAL FIELD

[0001] The utility model relates to butterfly valve technical field, concretely relates to a butterfly valve control device. BACKGROUND

[0002] In the cylindrical passage of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, the rotation angle is between 0°-90°, when rotating to 90°, the valve is in the full open state. The valve is generally installed horizontally. The clamp type butterfly valve has simple structure, small volume and light weight, and is composed of only a few parts. Moreover, it can be quickly opened and closed by rotating only 90°, and the operation is simple, and the valve has good fluid control characteristics. When the butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body, so the pressure drop generated by the valve is very small, so it has good flow control ability. However, the butterfly plate in the existing butterfly valve is in the form of a disc, which leads to low flow regulation accuracy when the butterfly valve is used for regulation. SUMMARY

[0003] Therefore, in view of the above problems, the utility model provides a butterfly valve control device, which solves the problem of low flow regulation accuracy caused by design defects of the existing butterfly valve.

[0004] To achieve the above purpose, the utility model is realized by the following technical scheme:

[0005] A butterfly valve control device, comprising a valve body, two groups of rotating components are arranged in the valve body, each rotating component comprises a valve plate and a rotating rod, each valve plate is in the form of a semicircle, the valve plate has a straight edge and an arc edge, each rotating rod is arranged in the straight edge of each valve plate, an abrupt angle is arranged on the straight edge of each valve plate, a notch is arranged on each abrupt angle, and each notch is arranged on the side where the abrupt angles are close to each other.

[0006] Further, each abrupt angle is coated with a sealing layer.

[0007] Further, the sealing layer is made of rubber.

[0008] Further, the arc edges are also provided with abrupt angles and notches, and the notches on the arc edges are arranged on the side where the abrupt angles are away from each other.

[0009] Further, the top of each rotating rod extends upwards and penetrates through the valve body and is provided with a rotating handle.

[0010] Further, an adjusting disc is arranged above the valve body, each rotating rod penetrates through the adjusting disc, and a limiting protrusion is arranged on the adjusting disc.

[0011] Further, the adjusting disc edge is arc-shaped, the adjusting disc edge is provided with adjusting teeth, the rotating handle is provided with a limiting rod, and one end of the limiting rod can be clamped in the adjusting teeth to limit the rotation of the rotating handle.

[0012] Further, the rotating handle is rotationally connected with the top of the rotating rod.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model is different from the round butterfly plate of the prior art butterfly valve, two half-circular valve plates are arranged in the valve body, when adjusting, the rotation angle of different valve plates can be adjusted respectively, the full opening, full closing and half opening state of the butterfly valve can be quickly realized, and in the half opening state, the flow passage in the valve body is blocked by one half-circular valve plate, the flow is reduced, and the adjustment of the other valve plate in the state can make the flow adjustment precision higher. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the utility model embodiment;

[0016] Figure 2 It is a transverse cross section structural schematic view of the utility model embodiment;

[0017] Figure 3 It is an adjusting disc structural schematic view of the utility model embodiment;

[0018] Figure 4 It is Figure 2 It is an enlarged structural schematic view of A in the middle;

[0019] Figure 5 It is a longitudinal cross section structural schematic view of the utility model embodiment.

[0020] EXPLANATION OF DRAWINGS

[0021] Valve body 1;

[0022] Rotating assembly 2; valve plate 21; rotating rod 22; straight edge 23; arc edge 24; steep angle 25; notch 26;

[0023] Sealing layer 3;

[0024] Rotating handle 4; limiting rod 41;

[0025] Adjusting disc 5; limiting protrusion 51; adjusting teeth 52. DETAILED DESCRIPTION

[0026] The embodiment of the utility model will be described in detail below in combination with specific embodiments, so that the realization process of how to apply technical means to solve technical problems and achieve technical effects can be fully understood and implemented.

[0027] Embodiment

[0028] As Figures 1 to 5 shown, a butterfly valve control device, comprising a valve body 1, two sets of rotating components 2 are arranged in the valve body 1, each of the rotating components 2 comprises a valve plate 21 and a rotating rod 22, each of the valve plates 21 is semicircular, the valve plate 21 has a straight edge 23 and an arc edge 24, each of the rotating rods 22 is arranged in the straight edge 23 of each of the valve plates 21, each of the valve plates 21 is provided with an abrupt corner 25 on the straight edge 23, each of the abrupt corners 25 is provided with a notch 26, and each of the notches 26 is arranged on the side of each of the abrupt corners 25 which is close to each other.

[0029] The valve body 1 comprises a full opening state, a full closing state and a half opening state.

[0030] In the full opening state, the two valve plates 21 are close to each other and parallel to the central axis of the valve body 1; in the full closing state, the arc edges 24 of the two valve plates 21 are close to the inner wall of the valve body 1; in the half opening state, the two valve plates 21 are perpendicular to each other, and the arc edge 24 of one of the valve plates 21 is close to the valve body 1.

[0031] When the butterfly valve is in the half opening state or the full opening state, in the process of turning to the full closing state, the design form of the abrupt corner 25 and the notch 26 can prevent the two valve plates from interfering with each other, and at the same time, good sealing performance can be achieved.

[0032] Each of the abrupt corners 25 is coated with a sealing layer 3, the sealing layer 3 is made of rubber material, and is used to ensure the sealing performance between the two valve plates 21.

[0033] Each of the arc edges 24 is also provided with an abrupt corner 25 and a notch 26, the notch 26 on each of the arc edges 24 is arranged on the side of each of the abrupt corners 25 which is far away from each other; in cooperation with the abrupt corner 25 and the notch 26 arranged on the straight edge 23, the diameter of the valve plate 21 can be designed to be larger than the diameter of the valve body 1, which is used to ensure good sealing performance after the wear of the components in use, so as to improve the service life of the butterfly valve.

[0034] Each of the rotating rods 22 extends upward and penetrates through the valve body 1 and is provided with a rotating handle 4; an adjusting disc 5 is arranged above the valve body 1, each of the rotating rods 22 penetrates through the adjusting disc 5, and the adjusting disc 5 is provided with a limiting protrusion 51.

[0035] The limiting protrusion 51 is used to limit the rotation angle of the rotating handle 4 when the butterfly valve is closed, so as to avoid damage to the components caused by large closing torque, since the edge of the valve plate 21 is designed with the sealing layer 3 which is made of rubber material and has a certain elasticity, the closing can be completed when the rotating handle 4 is not rotated to the position of the limiting protrusion 51.

[0036] The edge of the adjusting disc 5 is arc-shaped, and is provided with adjusting teeth 52; the rotating handle 4 is provided with a limiting rod 41, one end of the limiting rod 41 is capable of being clamped in the adjusting teeth 52 to limit the rotation of the rotating handle 4.

[0037] In the embodiment, the rotating handle 4 is fixedly connected with the top of the rotating rod 22, and the other end of the limiting rod 41 is rotatably connected with the rotating handle 4 by a torsion spring and extends downward, which is a prior art and will not be described here.

[0038] In other preferred embodiments, the rotating handle 4 is rotatably connected with the top of the rotating rod 22, and in use, the end of the limiting rod 41 is disengaged from or engaged with the adjusting teeth 52 by swinging the rotating handle 4 upward or downward, compared with the prior art, the limiting rod 41 does not need to be reset by a torsion spring, and the components are less.

[0039] Although the utility model is specifically shown and introduced in combination with the preferred embodiments, it should be understood by those skilled in the art that various changes can be made in form and details without departing from the spirit and scope of the utility model defined in the appended claims, and all the changes are within the protection scope of the utility model.

Claims

1. A butterfly valve control apparatus comprising a valve body, characterised in that: The valve body is provided with two groups of rotating components, each of which comprises a valve plate and a rotating rod, each of the valve plates is semicircular, the valve plate has a straight edge and an arc edge, each of the rotating rods is arranged in the straight edge of each of the valve plates, each of the valve plates is provided with an abrupt corner on the straight edge, each of the abrupt corners is provided with a notch, and each of the notches is arranged on the side of each of the abrupt corners that is close to each other.

2. A butterfly valve control apparatus according to claim 1, wherein: Each of the abrupt corners is coated with a sealing layer.

3. A butterfly valve control apparatus as claimed in claim 2, wherein: The sealing layer is made of rubber.

4. The butterfly valve control apparatus of claim 1, wherein: Each of the arc edges is also provided with an abrupt corner and a notch, and the notch on each of the arc edges is arranged on the side of each of the abrupt corners that is away from each other.

5. The butterfly valve control apparatus of claim 1, wherein: Each of the rotating rods is upwardly extended through the valve body and provided with a rotating handle.

6. A butterfly valve control apparatus as claimed in claim 5, wherein: An adjusting disc is arranged above the valve body, each of the rotating rods is arranged on the adjusting disc, and the adjusting disc is provided with a limiting protrusion.

7. A butterfly valve control apparatus as claimed in claim 6, wherein: The edge of the adjusting disc is arc-shaped, the edge of the adjusting disc is provided with an adjusting tooth, a limiting rod is arranged on the rotating handle, and one end of the limiting rod can be clamped in the adjusting tooth to limit the rotation of the rotating handle.

8. A butterfly valve control apparatus as claimed in claim 7, wherein: The rotating handle is rotationally connected with the top of the rotating rod.

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