CN219299942U

CN219299942U - Fluorine lining butterfly valve

Info

Publication number: CN219299942U
Application number: CN202223244190.0U
Authority: CN
Inventors: 徐聘; 徐建强; 夏军; 沈裕华; 叶梅勤
Original assignee: Suzhou Dongshan Anticorrosion Instrument Valve Co ltd
Current assignee: Suzhou Dongshan Anticorrosion Instrument Valve Co ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-07-04
Anticipated expiration: 2032-12-05

Abstract

The utility model discloses a fluorine-lined butterfly valve, which comprises a butterfly valve body, a valve plate and a valve rod, wherein a valve seat is arranged in the butterfly valve body, an upper shaft through hole and a lower shaft blind hole are respectively arranged on the butterfly valve body, the valve plate is rotatably arranged in the valve seat, one end of the valve rod penetrates through the upper shaft through hole and the valve seat to the lower shaft blind hole and is connected with the valve plate, the fluorine-lined butterfly valve also comprises a valve plate protective cover, the valve plate protective cover comprises a cover body and a shell, one surface of the shell is provided with an open part, the valve plate is arranged in the shell in an interference manner, the cover body is detachably connected with the valve plate at the open part, and the upper side and the lower side of the shell are provided with yielding through holes through which the valve rod penetrates.

Description

Fluorine lining butterfly valve

Technical Field

The utility model relates to the technical field of valve production, in particular to a fluorine-lined butterfly valve.

Background

Fluorine lining butterfly valve: as a component for realizing on-off and flow control of a pipeline system, the component has been widely used in many fields of petroleum, chemical industry, metallurgy, hydropower and the like. In the known butterfly valve technology, a sealing structure is often adopted in a sealing mode, and sealing materials are rubber, polytetrafluoroethylene and the like. Due to the limitation of structural characteristics, the high-temperature-resistant, high-pressure-resistant, corrosion-resistant and wear-resistant plastic is not suitable for industries such as high temperature resistance, high pressure resistance, corrosion resistance, wear resistance and the like. The fluorine-lined butterfly valve in the prior art has the following problems:

in the prior art, the corrosion resistance of the valve plate in the fluorine-lined butterfly valve is poor, when the corrosiveness of fluid flowing in an external pipeline is strong, the valve plate is corroded due to corrosive elements in the fluid, so that the service life of the fluorine-lined butterfly valve is seriously influenced, and therefore, the fluorine-lined butterfly valve capable of protecting the valve plate is provided for solving the problems.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model discloses a fluorine-lined butterfly valve.

In order to achieve the above purpose, the present utility model is realized by the following technical scheme: the utility model provides a lining fluorine butterfly valve, includes butterfly valve body, valve plate and valve rod, the inside of butterfly valve body is provided with the disk seat, be provided with upper shaft through-hole and lower shaft blind hole on the butterfly valve body respectively, the rotatable setting of valve plate is inside the disk seat, valve rod one end is passed upper shaft through-hole, disk seat to lower in the shaft blind hole and is connected with the valve plate, still includes the valve plate protection casing, the valve plate protection casing includes lid and one side has the casing of open portion, the valve plate interference sets up in the inside of casing, the lid can be dismantled with the valve plate in open portion position and be connected, both sides are provided with the through-hole of stepping down that the valve rod passed about the casing.

Further, the valve seat and the valve plate protecting cover are made of polytetrafluoroethylene materials.

Further, the inside of valve plate is provided with radial through-hole along the perpendicular thereto, radial through-hole's top is provided with the internal thread, the middle part surface of valve rod is provided with the external screw thread, when the valve rod passed radial through-hole, the internal screw thread cooperatees with the external screw thread so that valve rod and valve plate are connected.

Further, the valve plate is provided with a plurality of screw holes at the periphery thereof in an equidistant manner, the cover body is provided with a plurality of screws which are screwed into the screw holes to fix the cover body and the valve plate, and the screws are made of polytetrafluoroethylene materials.

Further, the outer edge of the cover body is coated with a U-shaped sealing gasket.

Further, sealing rings are arranged inside the two abdicating through holes.

Further, the cover body and the surface of the shell body opposite to the cover body are both formed with reinforcing protrusions, and the reinforcing protrusions are arranged in two rows up and down.

The utility model has the following beneficial effects:

1. according to the utility model, the inner thread is arranged at the top of the radial through hole of the valve plate, and the outer thread is arranged on the outer surface of the middle part of the valve rod, so that an operator can conveniently and quickly disassemble and assemble the valve rod and the valve.

2. According to the utility model, the valve plate protective cover is detachably arranged on the outer surface of the valve plate, so that the valve plate is prevented from being corroded by fluid, the service life of the valve plate is prolonged, and the valve plate protective cover has strong practicability.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a schematic diagram of the overall structure of the present disclosure;

fig. 2 is a partially exploded schematic illustration of the present disclosure.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Examples

Referring to fig. 1 and 2, a fluorine-lined butterfly valve comprises a butterfly valve body 10, a valve plate 40 and a valve rod 20, wherein a control device is arranged on the outer part of the valve rod, the structure of the valve rod is of a known technology, the valve body is not repeated, a valve seat 30 is arranged in the butterfly valve body, an upper shaft through hole 11 and a lower shaft blind hole 12 are respectively arranged on the butterfly valve body, the valve plate is rotatably arranged in the valve seat, one end of the valve rod penetrates through the upper shaft through hole, the valve seat and the lower shaft blind hole and is connected with the valve plate, the fluorine-lined butterfly valve further comprises a valve plate protection cover 50, the valve seat and the valve plate protection cover are made of polytetrafluoroethylene materials, the corrosion of fluid to the valve plate or the inner wall of the valve body can be avoided, the valve plate protection cover comprises a cover body 51 and a shell 52 with an opening part, the valve plate is arranged in an interference mode in the shell, the cover body is detachably connected with the valve plate in the opening part, and the upper side and the lower sides of the shell are provided with a yielding through hole 511 through which the valve rod penetrates.

Specifically, the inside of valve plate is provided with radial through-hole 41 along the perpendicular thereto, and radial through-hole's top is provided with internal thread 42, and the middle part surface of valve rod is provided with external screw thread 21, and when the valve rod passed radial through-hole, internal thread cooperatees with external screw thread so that the valve rod is connected with the valve plate, through this kind of mode, can make things convenient for operating personnel to carry out quick assembly disassembly with valve plate and valve plate.

Specifically, the valve plate has a plurality of screw holes in its peripheral reason equidistance row, is provided with the screw 53 on the lid and screws into the screw 521 of a plurality of in order to fix lid and valve plate, and a plurality of screws are made by polytetrafluoroethylene material, and is fixed lid and valve through the screw, and it is comparatively convenient to operate, adopts polytetrafluoroethylene material's screw to compare in the metal screw can prevent by the fluid corrosion simultaneously, has improved its life equally, has ensured that the valve plate protection casing can protect the valve plate for a long time.

As a preferred embodiment, the outer edge of the cover body is coated with a U-shaped sealing gasket 55, and when the cover plate is fixed on the valve plate, the U-shaped sealing gasket is in contact with the inner wall of the shell, so that the shell is sealed, and corrosion of the valve plate caused by fluid entering the shell is avoided.

As a preferred embodiment, the two relief holes are internally provided with sealing rings 56, which prevent the corrosion of the valve plate caused by the fluid entering the interior of the housing when the valve plate protecting cover is mounted on the valve.

As a preferred embodiment, the cover and the surface of the shell opposite to the cover are both formed with reinforcing protrusions 54, and the reinforcing protrusions are arranged in two rows up and down, and the strength of the cover and the surface of the shell can be improved by arranging the reinforcing protrusions on the surfaces of the cover and the shell, so that the fluid cannot deform during the impact process.

In addition, in the installation, install the valve plate that has the valve protection casing in butterfly valve body inside earlier, then pass valve rod through upper shaft through-hole, disk seat, the through-hole of stepping down above the casing, radial through-hole, the through-hole of stepping down below the casing, the disk seat in proper order, after this, the rotatory valve rod of operating personnel continues to make the valve rod descend so that in the valve rod reaches the lower shaft blind hole to the external screw thread of valve rod cooperatees with the internal screw thread of radial through-hole so that valve rod and valve plate are fixed.

The foregoing embodiments are merely illustrative of the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the present utility model and to implement the same according to the present utility model, not to limit the scope of the present utility model. All changes and modifications that come within the meaning and range of equivalency of the utility model are to be embraced within their scope.

Claims

1. The utility model provides a lining fluorine butterfly valve, includes butterfly valve body, valve plate and valve rod, the inside of butterfly valve body is provided with the disk seat, be provided with upper shaft through-hole and lower shaft blind hole on the butterfly valve body respectively, the rotatable setting of valve plate is inside the disk seat, valve rod one end is passed in upper shaft through-hole, disk seat to the lower shaft blind hole and is connected with the valve plate, its characterized in that still includes the valve plate protection casing, the valve plate protection casing includes the casing that lid and one side have the open portion, the valve plate interference sets up in the inside of casing, the lid can be dismantled with the valve plate in open portion position and be connected, both sides are provided with the through-hole of stepping down that the valve rod passed about the casing.

2. The fluorine lined butterfly valve of claim 1, wherein the valve seat and valve plate shield are made of polytetrafluoroethylene.

3. The fluorine lined butterfly valve of claim 1, wherein the interior of the valve plate is provided with a radial through hole along a perpendicular thereto, the top of the radial through hole is provided with an internal thread, the middle outer surface of the valve stem is provided with an external thread, and the internal thread mates with the external thread to connect the valve stem with the valve plate when the valve stem passes through the radial through hole.

4. The butterfly valve of claim 1, wherein the valve plate has a plurality of screw holes equidistantly arranged on a peripheral edge thereof, and the cover body is provided with a plurality of screws screwed into the plurality of screw holes to fix the cover body to the valve plate, and the plurality of screws are made of polytetrafluoroethylene.

5. The fluorine lined butterfly valve of claim 1, wherein the outer edge of the cover is covered with a U-shaped gasket.

6. The fluorine lined butterfly valve of claim 1, wherein sealing rings are disposed inside the two relief holes.

7. The fluorine lined butterfly valve of claim 1, wherein the cover body and the surface of the housing opposite to the cover body are both formed with reinforcing protrusions, and the reinforcing protrusions are arranged in two rows up and down.