Double-clip type butterfly valve

Abstract

The utility model belongs to the technical field of butterfly valves, and particularly relates to a wafer type butterfly valve which comprises a valve body, a first connecting disc is fixedly connected to one side of the valve body, an adjusting piece is connected to the first connecting disc in a matched mode, and the adjusting piece is connected to the valve body in a matched mode. According to the double-clip type butterfly valve, due to the design of the adjusting piece and the second connecting disc, the double-clip type butterfly valve can be suitable for being used for connecting pipelines with different intervals, and the extending distance of the second connecting disc on the valve body can be controlled through the adjusting piece; by means of the design of the valve plate, after the edge of the valve plate is abraded, the distance between the two abutting plates can be shortened through the tightening bolts, so that the rubber pad is extruded to expand towards the periphery, and the service life of the valve plate is prolonged. And the problem that the valve body is not sealed tightly after the valve plate is abraded can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a clamp-type butterfly valve. Background Art

[0002] The butterfly plate of the wafer butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, and the rotation angle is between 0°-90°. When it rotates to 90°, the valve is fully open. This valve is generally installed horizontally. The wafer butterfly valve has a simple structure, small size, light weight, and is composed of only a few parts. Moreover, it can be quickly opened and closed by rotating 90°, which is simple to operate. At the same time, 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. Therefore, the pressure drop generated by the valve is very small, so it has good flow control characteristics. The current wafer butterfly valve has a fixed length and size, and cannot be used between connecting pipes with different spacings. The applicability is poor, and the existing valve plate will be severely worn at the edge after long-term use, which will lead to unrealistic sealing and fluid leakage, affecting the sealing effect. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies in the prior art, the utility model provides a wafer-type butterfly valve, which solves the problems of poor applicability and poor sealing caused by wear of the wafer-type butterfly valve mentioned in the background art.

[0005] (II) Technical solution

[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0007] A clamp-type butterfly valve comprises a valve body, one side of the valve body is fixedly connected to a first connecting plate, the first connecting plate is cooperatively connected to an adjusting member, the adjusting member is cooperatively connected to the valve body, the other side of the valve body is cooperatively connected to a second connecting plate, the second connecting plate is threadedly connected to the adjusting member, and the valve body is cooperatively provided with a valve plate.

[0008] Furthermore, the valve body is composed of a main body, a positioning valve handle, a plug-in slot and a rotating hole. A positioning valve handle is provided on the top of the main body, a plug-in slot is provided on one side of the valve body, and four rotating holes are annularly opened on the main body inside the plug-in slot.

[0009] Furthermore, the first connecting plate is composed of a first flange, a first sealing gasket, a rotating groove and a connecting hole. The first flange is equipped with a first sealing gasket. The first flange is fixedly connected to the main body on the side away from the plug-in slot. The first flange is provided with a rotating groove, and four connecting holes are provided in a circular array on the first flange at the tangent part to the rotating groove.

[0010] Furthermore, the adjusting member is composed of a screw, a gear and a gear ring, and four screw ring arrays are arranged. The screw is rotatably connected in the rotating hole, one end of the screw is fixedly connected with a gear, the gear is meshingly connected with the gear ring, the gear is rotatably connected in the connecting hole, and the gear ring is rotatably connected in the rotating groove.

[0011] Furthermore, the second connecting plate is composed of a second flange, a second sealing gasket, a plug-in tube and a threaded hole. The second flange is equipped with a second sealing gasket. The second flange is fixedly connected to a plug-in tube, which is slidably plugged into the plug-in groove. Four threaded holes are arranged in a circular array on the plug-in tube, and the threaded holes are threadedly connected to the screw.

[0012] Furthermore, the valve plate is composed of a sealing plate, a rubber pad, a contact plate and bolts. A rubber pad is arranged at the outer edge of the sealing plate, and contact plates are arranged on both sides of the sealing plate. The two contact plates are connected to the sealing plate by symmetrically arranged bolts, and the rubber pad is located between the two contact plates.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a wafer-type butterfly valve, which has the following beneficial effects:

[0015] The clamped butterfly valve designed by the utility model can be suitable for connecting and using between pipelines with different spacings through the design of the adjusting member and the second connecting plate. The extending distance of the second connecting plate on the valve body can be controlled through the adjusting member, so that the combined length of the valve body, the first connecting plate and the second connecting plate can be changed, thereby meeting the installation applicability between pipelines with different spacings and improving the use effect. Through the design of the valve plate, after the edge of the valve plate is worn, the distance between the two contact plates can be reduced by tightening the bolts, so that the rubber pad is squeezed and expanded to the surroundings, which can avoid the problem of poor sealing of the valve body after the valve plate is worn. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the valve body structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the first connecting plate and the adjusting member of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the second connecting disk of the utility model;

[0020] Figure 5 This is a schematic diagram of the valve plate structure of the utility model.

[0021] In the figure: 1. valve body; 101. main body; 102. positioning valve handle; 103. plug-in slot; 104. rotating hole; 2. first connecting plate; 201. first flange; 202. first sealing gasket; 203. rotating slot; 204. connecting hole; 3. adjusting member; 301. screw; 302. gear; 303. gear ring; 4. second connecting plate; 401. second flange; 402. second sealing gasket; 403. plug-in tube; 404. threaded hole; 5. valve plate; 501. sealing plate; 502. rubber pad; 503. contact plate; 504. bolt. DETAILED DESCRIPTION

[0022] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example

[0024] like Figure 1-5As shown, a wafer-type butterfly valve is proposed in one embodiment of the utility model. The wafer-type butterfly valve designed in this scheme can be connected and used between pipelines with different spacings through a matching design, thereby improving the installation applicability. Moreover, through the design, the sealing effect can be improved, and the problem of fluid leakage caused by long-term wear and tear will not occur. The valve body 1 includes a first connecting plate 2 fixedly connected to one side of the valve body 1, an adjusting member 3 is matched and connected to the first connecting plate 2, and the adjusting member 3 is matched and connected to the valve body 1. A second connecting plate 4 is matched and connected to the adjusting member 3 on the other side of the valve body 1, and the second connecting plate 4 is threadedly connected to the adjusting member 3. A valve plate 5 is matched and arranged on the valve body 1. When the butterfly valve is installed between pipelines with different spacings, the first flange 201 on one side is fixedly connected to the first connecting plate 201 on the other side of the valve body 1. The sealing gasket 202 is removed, and the screw 301 is rotated by using a tool to insert the hexagonal screw hole on the gear 302 at one end of any screw 301. When the screw 301 and the gear 302 rotate, since the four gears 302 arranged in the annular array are meshed and connected with the ring gear 303, when any gear 302 rotates, the ring gear 303 will drive the remaining three gears 302 to rotate. At this time, the four screws 301 will rotate synchronously. Since the screw 301 is threadedly connected with the threaded hole 404 opened on the plug-in tube 403, and the plug-in tube 403 is slidably plugged into the plug-in groove 103, when the screw 301 rotates, the plug-in tube 403 can be controlled to slide and plug in and adjust in the plug-in groove 103, thereby controlling the first connecting disk 2, the valve body 1 and The combined length of the second connecting plate 4 meets the installation and use requirements of different pipe spacings. It is explained here that the insertion distance of the plug-in tube 403 in the plug-in groove 103 does not exceed half of the thickness of the main body 101, ensuring the connection and use of the valve stem with the positioning valve handle 102 on the main body 101. After adjustment, the first sealing gasket 202 fits on the first flange 201, and can be connected to one end of the pipeline through the first flange 201, and the second flange 401 is connected to the other end of the pipeline. Through the design of the first sealing gasket 202 and the second sealing gasket 402, the sealing effect of the connection can be achieved. It is explained here that the best installation direction of one end of the second connecting plate 4 during installation is towards the direction of fluid flow in the pipeline, which improves the use effect and avoids reverse During installation, the fluid pressure inside the pipeline is relatively high, causing the fluid to flow out from the plug-in gap between the plug-in groove 103 and the plug-in tube 403. The valve plate 5 can be controlled to rotate and adjust inside the valve body 1 by positioning the valve handle 102 to meet the switching needs of the valve. After the valve plate 5 has been used for a long time, the edge of the valve plate 5 will be worn and heat-damaged, resulting in poor sealing. The traditional maintenance method is to replace the valve plate 5. When the valve plate 5 of this solution is not sealed well, the two bolts 504 are tightened to reduce the distance between the two contact plates 503. The two contact plates 503 squeeze the rubber pad 502 provided on the sealing plate 501. Due to the rubber extension characteristics of the rubber pad 502, when the rubber pad 502 is squeezed, the rubber pad 502 can expand outward.This can make up for the gap spacing caused by wear and tear, realize the tight sealing of the valve plate 5 inside the main body 101, and improve the use effect. The contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0025] like Figure 2 As shown, in some embodiments, the valve body 1 is composed of a main body 101, a positioning valve handle 102, a plug-in slot 103 and a rotating hole 104. A positioning valve handle 102 is provided on the top of the main body 101, a plug-in slot 103 is provided on one side of the valve body 1, and four rotating holes 104 are annularly opened on the main body 101 inside the plug-in slot 103. The design of the valve body 1 meets the use requirements and ensures the overall connection use effect of the device.

[0026] like Figure 3 As shown, in some embodiments, the first connecting plate 2 is composed of a first flange 201, a first sealing gasket 202, a rotating groove 203 and a connecting hole 204. The first flange 201 is equipped with a first sealing gasket 202. The first flange 201 is fixedly connected to the main body 101 on the side away from the plug-in slot 103. The first flange 201 is provided with a rotating groove 203. Four connecting holes 204 are provided in a circular array on the first flange 201 at a position tangent to the rotating groove 203. The first connecting plate 2 meets the requirements of being connected to one end of the connecting pipeline to ensure the installation and use of the adjusting member 3.

[0027] like Figure 3 As shown, in some embodiments, the adjusting member 3 is composed of a screw 301, a gear 302 and a ring gear 303. Four screws 301 are arranged in a ring array. The screw 301 is rotatably connected in the rotating hole 104. One end of the screw 301 is fixedly connected with a gear 302. The gear 302 is meshingly connected with the ring gear 303. The gear 302 is rotatably connected in the connecting hole 204. The ring gear 303 is rotatably connected in the rotating groove 203. The adjusting member 3 can realize the telescopic adjustment control of the second connecting disk 4, so that the butterfly valve of this scheme can meet the use of pipeline connections with different spacings.

[0028] like Figure 4 As shown, in some embodiments, the second connecting plate 4 is composed of a second flange 401, a second sealing gasket 402, a plug-in tube 403 and a threaded hole 404. The second flange 401 is equipped with a second sealing gasket 402, and the second flange 401 is fixedly connected with a plug-in tube 403. The plug-in tube 403 is slidably plugged into the plug-in groove 103. Four threaded holes 404 are arranged in a circular array on the plug-in tube 403. The threaded holes 404 are threadedly connected to the screw 301. The design of the second connecting plate 4 meets the use requirements. Under the control of the adjusting member 3, it can be telescopically adjusted on the valve body 1 to meet the use of pipeline connections with different spacings, thereby improving the installation applicability of the butterfly valve of this scheme.

[0029] like Figure 5 As shown, in some embodiments, the valve plate 5 is composed of a sealing plate 501, a rubber pad 502, a resistance plate 503 and a bolt 504. The rubber pad 502 is arranged at the outer edge of the sealing plate 501, and resistance plates 503 are arranged on both sides of the sealing plate 501. The two resistance plates 503 are connected to the sealing plate 501 by symmetrically arranged bolts 504. The rubber pad 502 is located between the two resistance plates 503. The design of the valve plate 5 meets the requirements for sealing the cavity of the valve body 1, can avoid the problem of poor sealing due to wear and tear, and the need to replace the valve plate 5, thereby improving the sealing effect.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A wafer-type butterfly valve, comprising a valve body (1), characterized in that: A first connection disk (2) is fixedly connected to one side of the valve body (1), an adjusting member (3) is cooperatively connected to the first connection disk (2), and the adjusting member (3) is cooperatively connected to the valve body (1). A second connection disk (4) is cooperatively connected to the other side of the valve body (1), and the second connection disk (4) is threadedly connected to the adjusting member (3). A valve plate (5) is cooperatively provided on the valve body (1). The adjusting member (3) comprises a screw rod (301), a gear (302), and a gear ring (303). Four screw rods (301) are provided in an annular array. The screw rods (301) are rotatably connected to the rotating hole (104), and one end of the screw rod (301) is fixedly connected to the gear (302). The gear (302) is meshingly connected with the gear ring (303), the gear (302) is rotatably connected in the connection hole (204), the gear ring (303) is rotatably connected in the rotation groove (203), the valve plate (5) is composed of a sealing plate (501), a rubber pad (502), a resistance plate (503) and a bolt (504), a rubber pad (502) is provided at the outer edge of the sealing plate (501), and resistance plates (503) are provided on both sides of the sealing plate (501), the two resistance plates (503) are connected to the sealing plate (501) by means of symmetrically arranged bolts (504), and the rubber pad (502) is located between the two resistance plates (503).

2. A wafer-type butterfly valve according to claim 1, characterized in that: The valve body (1) is composed of a main body (101), a positioning valve handle (102), a plug-in slot (103) and a rotation hole (104); the top of the main body (101) is provided with a positioning valve handle (102); one side of the valve body (1) is provided with a plug-in slot (103); and four rotation holes (104) are annularly opened on the main body (101) inside the plug-in slot (103).

3. A wafer-type butterfly valve according to claim 1, characterized in that: The first connection plate (2) is composed of a first flange (201), a first sealing gasket (202), a rotation groove (203) and a connection hole (204); the first flange (201) is provided with a first sealing gasket (202); the first flange (201) is fixedly connected to the main body (101) on a side away from the plug-in groove (103); the first flange (201) is provided with a rotation groove (203); and four connection holes (204) are provided in a circular array on the first flange (201) at a portion tangent to the rotation groove (203).

4. A wafer-type butterfly valve according to claim 2, characterized in that: The second connection plate (4) is composed of a second flange (401), a second sealing gasket (402), a plug-in tube (403) and a threaded hole (404); the second flange (401) is provided with a second sealing gasket (402); the second flange (401) is fixedly connected with a plug-in tube (403); the plug-in tube (403) is slidably plugged into the plug-in groove (103); four threaded holes (404) are formed in an annular array on the plug-in tube (403); the threaded holes (404) are threadedly connected to the screw rod (301).

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