Eccentric flange type butterfly valve

Abstract

The utility model discloses an eccentric flange type butterfly valve which comprises an eccentric flange type butterfly valve body, fixing frames are arranged in through holes in the front surface and the rear surface of the eccentric flange type butterfly valve body, a supporting frame is fixedly installed on the outer side of the eccentric flange type butterfly valve body, and a rotating shaft is movably installed in the eccentric flange type butterfly valve body. Valve blades are fixedly installed on the outer side of the rotating shaft, a valve head is fixedly installed at the position, located at the upper end, of the outer side of the eccentric flange type butterfly valve body, a rotating disc is movably installed on the outer side of the valve head, and rubber gaskets are fixedly installed on the front surface and the rear surface of the eccentric flange type butterfly valve body. According to the eccentric flange type butterfly valve, the number of bolts used when the eccentric flange type butterfly valve is installed is reduced by half through the fixing frame, the eccentric flange type butterfly valve is more convenient and simpler to disassemble and assemble, eccentric flange type butterfly valve bodies of different heights can be supported through the supporting frame, and the eccentric flange type butterfly valve is more convenient to assemble and disassemble. The eccentric flange type butterfly valve is more stable in structure after being installed.

Description

Technical Field

[0001] The utility model relates to the technical field of eccentric flange type butterfly valve structures, in particular to an eccentric flange type butterfly valve. 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 with a closing member as a disc, which rotates around the valve axis to achieve opening and closing. The 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. It mainly plays a cutting and throttling role in the pipeline. The butterfly valve opening and closing member 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. The eccentric flange butterfly valve is a type of butterfly valve.

[0003] The existing eccentric flange butterfly valve has certain disadvantages when in use. The traditional eccentric flange butterfly valve requires too many bolts when installing, which is not convenient when disassembling and assembling the eccentric flange butterfly valve. In addition, the eccentric flange butterfly valve is too heavy and the structure is not stable enough after installation. Utility Model Content

[0004] The main purpose of the utility model is to provide an eccentric flange type butterfly valve, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] An eccentric flange type butterfly valve comprises an eccentric flange type butterfly valve body, a fixing frame is provided in the through holes on the front and rear surfaces of the eccentric flange type butterfly valve body, a supporting frame is fixedly installed on the outer side of the eccentric flange type butterfly valve body, a rotating shaft is movably installed inside the eccentric flange type butterfly valve body, a valve blade is fixedly installed on the outer side of the rotating shaft, a valve head is fixedly installed at a position at the upper end of the outer side of the eccentric flange type butterfly valve body, a turntable is movably installed on the outer side of the valve head, and rubber gaskets are fixedly installed on the front and rear surfaces of the eccentric flange type butterfly valve body.

[0007] Preferably, the fixing frame includes a limiting rod, a No. 1 clamping plate, a clamping head, a No. 2 clamping plate and a No. 1 screw rod.

[0008] Preferably, the limit rod is arranged inside the through hole on the front and rear surfaces of the eccentric flange type butterfly valve body, the No. 1 clamping plate is sleeved on the front end of the limit rod, and the clamping head is clamped in the notch at the front end of the limit rod.

[0009] Preferably, the second clamping plate is sleeved on the outer side of the limiting rod near the rear end, the first screw is arranged in the screw through hole on the rear surface of the limiting rod, and the front end of the first screw is clamped in the interior of the second clamping plate.

[0010] Preferably, the support frame includes a U-shaped frame, a sliding frame, a No. 2 screw, a pressing plate, a sponge pad and a rubber pad.

[0011] Preferably, the U-shaped frame is fixedly installed on the outside of the eccentric flange butterfly valve body, the sliding frame is arranged in the through hole on the lower surface of the U-shaped frame, the No. 2 screw is arranged in the screw through hole on the lower surface of the U-shaped frame, and the upper end of the No. 2 screw is stuck in the interior of the sliding frame.

[0012] Preferably, the pressing plate is fixedly mounted on the lower end of the sliding frame, the sponge pad is fixedly mounted on the lower surface of the pressing plate, the rubber pad is fixedly mounted on the lower surface of the sponge pad, and the lower end of the No. 2 screw is clamped inside the pressing plate.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] In the utility model, a fixing frame is provided, which reduces the number of bolts used in the installation of the eccentric flange type butterfly valve by half, making it more convenient and simple to disassemble and assemble the eccentric flange type butterfly valve. A supporting frame is provided, which can support the eccentric flange type butterfly valve body of different heights, making the structure of the eccentric flange type butterfly valve more stable after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of an eccentric flange type butterfly valve of the utility model;

[0016] Figure 2 This is a schematic diagram of the main structure of an eccentric flange type butterfly valve of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure decomposition of a fixing frame of an eccentric flange type butterfly valve of the utility model;

[0018] Figure 4 The utility model is a schematic diagram of the exploded structure of a support frame of an eccentric flange type butterfly valve.

[0019] In the figure: 1. eccentric flange type butterfly valve body; 2. fixing frame; 201. limit rod; 202. No. 1 clamping plate; 203. clamping head; 204. No. 2 clamping plate; 205. No. 1 screw; 3. supporting frame; 301. U-shaped frame; 302. sliding frame; 303. No. 2 screw; 304. pressure plate; 305. sponge pad; 306. rubber pad; 4. rotating shaft; 5. valve blade; 6. valve head; 7. turntable; 8. rubber gasket. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figure 1-4 As shown, an eccentric flange type butterfly valve comprises an eccentric flange type butterfly valve body 1, a fixing frame 2 is provided in the through holes on the front and rear surfaces of the eccentric flange type butterfly valve body 1, a supporting frame 3 is fixedly installed on the outside of the eccentric flange type butterfly valve body 1, a rotating shaft 4 is movably installed inside the eccentric flange type butterfly valve body 1, a valve blade 5 is fixedly installed on the outside of the rotating shaft 4, a valve head 6 is fixedly installed at the upper end of the outer side of the eccentric flange type butterfly valve body 1, a turntable 7 is movably installed on the outside of the valve head 6, and a rubber gasket 8 is fixedly installed on the front and rear surfaces of the eccentric flange type butterfly valve body 1. The fixing frame 2 reduces the number of bolts used when installing the eccentric flange type butterfly valve by half, and makes it more convenient and simple to disassemble and assemble the eccentric flange type butterfly valve. The supporting frame 3 can support the eccentric flange type butterfly valve body 1 of different heights, so that the structure of the eccentric flange type butterfly valve is more stable after installation.

[0022] The fixing frame 2 includes a limit rod 201, a No. 1 clamping plate 202, a clamp head 203, a No. 2 clamping plate 204 and a No. 1 screw 205; the limit rod 201 is arranged inside the through hole on the front and rear surfaces of the eccentric flange type butterfly valve body 1, the No. 1 clamping plate 202 is sleeved on the front end of the limit rod 201, and the clamp head 203 is clamped in the front end notch of the limit rod 201; the No. 2 clamping plate 204 is sleeved on the outer side of the limit rod 201 near the rear end, the No. 1 screw 205 is arranged in the screw through hole on the rear surface of the limit rod 201, and the front end of the No. 1 screw 205 is clamped inside the No. 2 clamping plate 204; the supporting frame 3 includes a U-shaped frame 301, a sliding frame 302 , No. 2 screw 303, pressure plate 304, sponge pad 305 and rubber pad 306; the U-shaped frame 301 is fixedly installed on the outside of the eccentric flange type butterfly valve body 1, the sliding frame 302 is arranged in the through hole on the lower surface of the U-shaped frame 301, the No. 2 screw 303 is arranged in the screw through hole on the lower surface of the U-shaped frame 301, and the upper end of the No. 2 screw 303 is clamped in the inside of the sliding frame 302; the pressure plate 304 is fixedly installed on the lower end of the sliding frame 302, the sponge pad 305 is fixedly installed on the lower surface of the pressure plate 304, the rubber pad 306 is fixedly installed on the lower surface of the sponge pad 305, and the lower end of the No. 2 screw 303 is clamped in the inside of the pressure plate 304.

[0023] It should be noted that the utility model is an eccentric flange type butterfly valve. When in use, in the fixing frame 2, remove the clamping head 203 in the notch at the front end of the limiting rod 201, pull out the No. 1 clamping plate 202 at the front end of the limiting rod 201, take out the limiting rod 201 in the through hole on the front and rear surfaces of the eccentric flange type butterfly valve body 1, align the pipeline flange with the flanges at the front and rear ends of the eccentric flange type butterfly valve body 1, then reinsert the limiting rod 201 into the flanges of the pipeline and the eccentric flange type butterfly valve body 1, then clamp the clamping head 203 into the notch at the front end of the limiting rod 201, and screw the No. 1 screw 202. 05, continuously push the second clamping plate 204 until the first screw 205 cannot be turned, in the support frame 3, turn the second screw 303, and continuously press down the sliding frame 302 until the pressure plate 304 is against the ground through the sponge pad 305 and the rubber pad 306, until the second screw 303 cannot be turned. The fixing frame 2 reduces the number of bolts used in the installation of the eccentric flange type butterfly valve by half, and the disassembly and assembly of the eccentric flange type butterfly valve is more convenient and simple. The support frame 3 can support the eccentric flange type butterfly valve body 1 of different heights, so that the structure of the eccentric flange type butterfly valve is more stable after installation.

[0024] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An eccentric flange butterfly valve, characterized in that: The invention comprises an eccentric flange type butterfly valve body (1), wherein a fixing frame (2) is provided in through holes on the front and rear surfaces of the eccentric flange type butterfly valve body (1), a supporting frame (3) is fixedly installed on the outside of the eccentric flange type butterfly valve body (1), a rotating shaft (4) is movably installed inside the eccentric flange type butterfly valve body (1), a valve blade (5) is fixedly installed on the outside of the rotating shaft (4), a valve head (6) is fixedly installed at a position at the upper end of the outside of the eccentric flange type butterfly valve body (1), and a rotating blade (6) is movably installed on the outside of the valve head (6). The eccentric flange type butterfly valve body (1) is provided with a rubber gasket (8) fixedly mounted on the front and rear surfaces thereof. The fixing frame (2) comprises a limit rod (201), a first clamping plate (202), a clamping head (203), a second clamping plate (204) and a first screw rod (205). The limit rod (201) is arranged inside the through hole on the front and rear surfaces of the eccentric flange type butterfly valve body (1). The first clamping plate (202) is sleeved on the front end of the limit rod (201). The clamping head (203) is clamped in the notch at the front end of the limit rod (201).

2. The eccentric flange type butterfly valve according to claim 1, characterized in that: The second clamping plate (204) is sleeved on the outer side of the limiting rod (201) near the rear end, the first screw rod (205) is arranged in the screw through hole on the rear surface of the limiting rod (201), and the front end of the first screw rod (205) is clamped inside the second clamping plate (204).

3. The eccentric flange butterfly valve according to claim 2, characterized in that: The support frame (3) comprises a U-shaped frame (301), a sliding frame (302), a No. 2 screw rod (303), a pressing plate (304), a sponge pad (305) and a rubber pad (306).

4. The eccentric flange type butterfly valve according to claim 3, characterized in that: The U-shaped frame (301) is fixedly mounted on the outside of the eccentric flange type butterfly valve body (1); the sliding frame (302) is arranged in a through hole on the lower surface of the U-shaped frame (301); the No. 2 screw (303) is arranged in a screw through hole on the lower surface of the U-shaped frame (301); and the upper end of the No. 2 screw (303) is clamped in the interior of the sliding frame (302).

5. The eccentric flange type butterfly valve according to claim 4, characterized in that: The pressing plate (304) is fixedly mounted on the lower end of the sliding frame (302), the sponge pad (305) is fixedly mounted on the lower surface of the pressing plate (304), the rubber pad (306) is fixedly mounted on the lower surface of the sponge pad (305), and the lower end of the No. 2 screw (303) is clamped inside the pressing plate (304).

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