Electrolytic tank isolation large valve connecting structure

Abstract

The utility model provides a connecting structure of an electrolytic tank isolation large valve, and relates to the technical field of valves. The flange comprises a valve flange and a pipeline flange, two gaskets are arranged on the side portions, close to each other, of the valve flange and the pipeline flange respectively, a spacer ring is arranged between the two gaskets, the valve flange, the pipeline flange, the two gaskets and the spacer ring are coaxially arranged, and the valve flange, the pipeline flange and the two gaskets are connected through bolts. And a positioning assembly in contact with the spacer ring is arranged between the two gaskets. The distance between the two ends of the valve and a pipeline is increased, and normal opening of the valve clack is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and particularly relates to a connection structure of a large isolation valve for an electrolytic cell. Background Art

[0002] At present, a butterfly valve is adopted for the large isolation valve of the electrolytic cell. The butterfly valve, also called a flap valve, is a simple-structured regulating valve. The closing member (valve flap or butterfly plate) is a disc, and it is a valve that rotates around the valve shaft to achieve opening and closing.

[0003] In the prior art, since the valve body of some butterfly valves is relatively narrow, during the opening process of the valve flap, interference may occur with the pipelines on both sides of the butterfly valve. Summary of the Utility Model

[0004] The purpose of the utility model is to develop a connection structure of a large isolation valve for an electrolytic cell that increases the distance between both ends of the valve and the pipeline to ensure the normal opening of the valve flap.

[0005] The utility model is realized through the following technical solutions:

[0006] A connection structure of a large isolation valve for an electrolytic cell includes:

[0007] A valve flange and a pipeline flange;

[0008] Two gaskets are respectively arranged on the side parts of the valve flange and the pipeline flange close to each other;

[0009] A spacer ring is arranged between the two gaskets;

[0010] Wherein, the valve flange, the pipeline flange, the two gaskets and the spacer ring are coaxially arranged. The valve flange, the pipeline flange and the two gaskets are bolt-connected, and a positioning component in contact with the spacer ring is arranged between the two gaskets.

[0011] Optionally, a plurality of flange holes corresponding in position are arranged on the valve flange and the pipeline flange. The plurality of flange holes are circularly and equidistantly arranged around the axis of the valve flange or the pipeline flange. A plurality of through holes corresponding in position to the flange holes are arranged on the two gaskets, and connecting bolts are arranged in the two flange holes and the two through holes.

[0012] Optionally, the outer diameter of the spacer ring is smaller than the inner diameter of the arrangement track of the through holes of the gasket, and the spacer ring is located inside the circular ring area where the through holes of the gasket are located.

[0013] Optionally, the outer diameter of the spacer ring is larger than the inner diameter of the gasket, and the inner diameter of the spacer ring is not less than the inner diameter of the gasket.

[0014] Optionally, the positioning component includes at least two positioning sleeves arranged at the lower part of the spacer ring. The positioning sleeves are in a cylindrical shape, and the positioning sleeves are sleeved on the connecting bolts.

[0015] Optionally, the inner diameter of the positioning sleeve is adapted to the outer diameter of the connecting bolt, and the outer diameter of the positioning sleeve is adapted to the outer diameter of the spacer ring.

[0016] Optionally, the length of the positioning sleeve is not longer than the length of the spacer ring.

[0017] Optionally, there are at least two positioning sleeves with a distance less than the outer diameter of the spacer ring at the lower part of the spacer ring.

[0018] Optionally, the positioning sleeve is made of nylon.

[0019] Optionally, the gasket is a PTFE rubber composite gasket.

[0020] The beneficial effects of the present utility model are as follows:

[0021] The spacer ring provided by the present utility model increases the distance between the two ends of the valve and the pipeline, ensuring the normal opening of the valve flap. The gasket provided maintains the sealing performance. The positioning component provided keeps the spacer ring and the gasket coaxial, improving the sealing performance of the gasket, avoiding the rapid corrosion of the gasket, increasing the service life of the gasket, reducing the frequency of gasket replacement, and avoiding the gasket being squeezed and damaged when tightening the connecting bolts due to poor coaxiality. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a structural diagram of the present utility model;

[0024] Figure 2 It is a structural diagram of the gasket.

[0025] Reference numerals: 1, pipeline flange; 2, valve flange; 3, connecting bolt; 4, gasket; 5, spacer ring; 6, positioning sleeve. Detailed Embodiments

[0026] In the following, only some exemplary embodiments are briefly described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0027] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0028] The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0029] As Figure 1 and Figure 2 shown, the present utility model discloses an electrolytic cell isolation large valve connection structure, which includes a spacer ring 5 provided between a valve flange 2 and a pipe flange 1. The spacer ring 5 has a certain length to increase the distance between the valve and the pipe, so that the valve flap can be opened normally.

[0030] Gaskets 4 are respectively provided between the two ends of the spacer ring 5 and the valve flange 2 and the pipe flange 1. The gaskets 4 are tetrafluoro rubber composite gaskets. The spacer ring 5, the gaskets 4, the valve flange 2 and the pipe flange 1 are coaxially arranged. The outer diameter of the spacer ring 5 is larger than the inner diameter of the gaskets 4, and the inner diameter of the spacer ring 5 is not less than the inner diameter of the gaskets 4.

[0031] Eight flange holes corresponding to each other in position are provided on the valve flange 2 and the pipe flange 1. The eight flange holes are arranged in a circular and equally spaced manner around the axis of the valve flange 2 or the pipe flange 1. Through holes corresponding to the flange holes in position are provided on the two gaskets 4.

[0032] When the valve flange 2 and the pipe flange 1 are bolted together, the spacer ring 5 is arranged between the two gaskets 4. The two gaskets 4 are coaxially in contact with the pipe flange 1 and the valve flange 2 on both sides of the spacer ring 5 respectively. The through holes of the two gaskets 4 and the flange holes of the pipe flange 1 and the valve flange 2 are in corresponding positions, and the connecting bolts 3 pass through the through holes of the two gaskets 4 and the flange holes of the pipe flange 1 and the valve flange 2.

[0033] The outer diameter of the spacer ring 5 is smaller than the inner diameter of the inner diameter of the through hole arrangement track of the gasket 4, that is, the spacer ring 5 is located inside the circular ring area where the through holes of the gasket 4 are located.

[0034] A positioning component is provided between the two gaskets 4, and the positioning component makes the spacer ring 5 and the gasket 4 coaxial. The positioning component includes four positioning sleeves 6. The positioning sleeves 6 are cylindrical. The length of the positioning sleeves 6 is not longer than the length of the spacer ring 5. The inner diameter of the positioning sleeves 6 is adapted to the outer diameter of the connecting bolts 3, and the outer diameter of the positioning sleeves 6 is adapted to the outer diameter of the spacer ring 5. When the positioning sleeves 6 are sleeved on the connecting bolts 3 and the spacer ring 5 and the gasket 4 are coaxial, the outer wall of the positioning sleeves 6 contacts the outer wall of the spacer ring 5.

[0035] The four positioning sleeves 6 are sleeved on the four lower connecting bolts 3 among the eight connecting bolts 3. When the connecting bolts 3 are not tightened, the spacer ring 5 is on the four positioning sleeves 6 under the action of gravity. The four positioning sleeves 6 support the spacer ring 5 and make it coaxial with the two gaskets 4. After the connecting bolts 3 are tightened, the spacer ring 5 remains coaxial with the gasket 4.

[0036] The number of the positioning sleeves 6 can be adjusted to ensure that at least two positioning sleeves 6 are sleeved on the lower connecting bolts 3, and the distance between the two positioning sleeves 6 is less than the outer diameter of the spacer ring 5. The positioning sleeves 6 are made of nylon and are turned from nylon rods.

[0037] When installing the valve and the pipeline, place the two gaskets 4 on the sides of the valve flange 2 and the pipeline flange 1 respectively. Put the positioning sleeves 6 between the two gaskets 4 and pass the corresponding connecting bolts 3 through the valve flange 2, the pipeline flange 1, the two gaskets 4 and the positioning sleeves 6. Then place the spacer ring 5 between the two gaskets 4, and pass the remaining connecting bolts 3 through, so that there is a certain gap between the two gaskets 4 and the spacer ring 5 or the spacer ring 5 is not clamped. The spacer ring 5 is supported by the positioning sleeves 6 to be coaxial with the gasket 4. Then tighten the connecting bolts 3, the pipeline flange 1 is connected to the valve flange 2, and the two gaskets 4 and the spacer ring 5 are coaxial with the pipeline flange 1 and the valve flange 2.

[0038] The spacer ring 5 provided by the present utility model increases the distance between the two ends of the valve and the pipeline, ensuring the normal opening of the valve flap. The provided gasket 4 maintains the sealing performance. The provided positioning component keeps the spacer ring 5 and the gasket 4 coaxial, improves the sealing performance of the gasket 4, avoids the rapid corrosion of the gasket 4, increases the service life of the gasket 4, reduces the replacement frequency of the gasket 4, and avoids the gasket 4 being squeezed and damaged when the connecting bolts 3 are tightened due to poor coaxiality.

[0039] The above embodiments are only the preferred embodiments of the present utility model, and do not limit the technical solutions of the present utility model. Any technical solution that can be achieved on the basis of the above embodiments without creative labor shall be regarded as falling within the scope of the patent right protection of the present utility model.

Claims

1. An electrolytic cell isolation large valve connection structure, characterized in that: include: Valve flange and pipe flange; Two gaskets are respectively arranged on the sides of the valve flange and the pipe flange close to each other; A spacer ring is provided between the two gaskets; The valve flange, the pipe flange, the two gaskets and the spacer ring are coaxially arranged, the valve flange, the pipe flange and the two gaskets are bolted together, and a positioning component in contact with the spacer ring is provided between the two gaskets.

2. The electrolytic cell isolation large valve connection structure according to claim 1 is characterized in that: The valve flange and the pipe flange are provided with flange holes at corresponding positions, and the multiple flange holes are arranged in a circular shape with equal intervals around the axial direction of the valve flange or the pipe flange. The two gaskets are provided with through holes at corresponding positions of the flange holes, and connecting bolts are provided in the two flange holes and the two through holes.

3. The electrolytic cell isolation large valve connection structure according to claim 2 is characterized in that: The outer diameter of the spacer ring is smaller than the inner diameter of the gasket through hole arrangement track, and the spacer ring is located inside the circular ring area where the gasket through hole is located.

4. The electrolytic cell isolation large valve connection structure according to claim 3 is characterized in that: The outer diameter of the spacer ring is larger than the inner diameter of the gasket, and the inner diameter of the spacer ring is not smaller than the inner diameter of the gasket.

5. The electrolytic cell isolation large valve connection structure according to claim 4 is characterized in that: The positioning assembly comprises at least two positioning sleeves arranged at the lower part of the spacer ring, the positioning sleeves are cylindrical, and the positioning sleeves are arranged on the connecting bolts.

6. The electrolytic cell isolation large valve connection structure according to claim 5, characterized in that: The inner diameter of the positioning sleeve is matched with the outer diameter of the connecting bolt, and the outer diameter of the positioning sleeve is matched with the outer diameter of the spacer ring.

7. The electrolytic cell isolation large valve connection structure according to claim 6, characterized in that: The length of the positioning sleeve is not longer than the length of the spacer ring.

8. The electrolytic cell isolation large valve connection structure according to claim 7, characterized in that: At least two positioning sleeves are disposed at the lower part of the spacer ring, and the spacing between the two positioning sleeves is smaller than the outer diameter of the spacer ring.

9. The electrolytic cell isolation large valve connection structure according to any one of claims 5 to 8, characterized in that: The positioning sleeve is made of nylon.

10. The electrolytic cell isolation large valve connection structure according to any one of claims 1 to 8, characterized in that: The gasket is a polyfluoro rubber composite gasket.

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