CN114542777A - Corrosion-resistant valve - Google Patents

Corrosion-resistant valve Download PDF

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Publication number
CN114542777A
CN114542777A CN202210175535.7A CN202210175535A CN114542777A CN 114542777 A CN114542777 A CN 114542777A CN 202210175535 A CN202210175535 A CN 202210175535A CN 114542777 A CN114542777 A CN 114542777A
Authority
CN
China
Prior art keywords
valve
valve body
corrosion
resistant
assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210175535.7A
Other languages
Chinese (zh)
Inventor
曹成
殷方方
耿德龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shangdong Zhongli High Pressure Valve Co ltd
Original Assignee
Shangdong Zhongli High Pressure Valve Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shangdong Zhongli High Pressure Valve Co ltd filed Critical Shangdong Zhongli High Pressure Valve Co ltd
Priority to CN202210175535.7A priority Critical patent/CN114542777A/en
Publication of CN114542777A publication Critical patent/CN114542777A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209—Check valves or pivoted valves
    • F16K27/0218—Butterfly valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226—Shaping or arrangements of the sealing
    • F16K1/2268—Sealing means for the axis of rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/0227—Packings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/0281—Guillotine or blade-type valves, e.g. no passage through the valve member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K41/00—Spindle sealings
    • F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination
    • Y02A20/131—Reverse-osmosis

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)
  • Details Of Valves (AREA)

Abstract

The invention provides a corrosion-resistant valve, which belongs to the technical field of valves and comprises a valve body and a corrosion-resistant lining, wherein the corrosion-resistant lining is arranged at a position, which is in contact with a medium, in the valve body and is used for preventing the medium from being in direct contact with the valve body so as to realize corrosion-resistant protection of the valve body. In the embodiment of the invention, the corrosion-resistant lining is arranged on the part, which is in contact with the medium, in the valve body, so that the medium is prevented from being in direct contact with the valve body, the corrosion-resistant protection of the valve body is realized, and the corrosion-resistant performance of the valve is improved.

Description

Corrosion-resistant valve
Technical Field
The invention belongs to the technical field of valves, and particularly relates to a corrosion-resistant valve.
Background
In the seawater desalination engineering, the problems of valve materials are more likely to occur on the flow passage components. At present, the commonly used materials of the flow passage component mainly comprise nickel aluminum bronze, stainless steel, duplex stainless steel, metal coating and the like.
The valve material nickel-aluminum bronze has excellent stress cracking resistance, fatigue corrosion resistance, cavitation corrosion resistance, scouring resistance, marine organism pollution damage resistance and other performances. But the method is sensitive to the medium flow velocity, the corrosion degree is increased and the casting process is unstable when the flow velocity exceeds the critical flow velocity, and the casting qualified rate is low.
The valve material stainless steel has excellent corrosion resistance, and the corrosion resistance is different according to the chemical components of the stainless steel. The material is also the most commonly used material in seawater desalination engineering, and is generally selected from 304, 316L, 2205, 2507 and the like according to the content of medium chloride ions.
The valve material is a metal coating, and the general main material is a nickel-chromium alloy cast iron lining anticorrosive coating (lining rubber, lining fluorine) and the like. The lining layer is an elastic soft sealing material, has good corrosion resistance to most inorganic or organic chemicals and solvents, but is often opened and closed by a valve or contains abrasive particles in a medium, so that the coating is damaged and falls off due to washing, and the application range is greatly limited.
Disclosure of Invention
In view of the above-mentioned deficiencies of the prior art, an embodiment of the present invention provides a corrosion-resistant valve.
In order to solve the technical problems, the invention provides the following technical scheme:
a corrosion-resistant valve comprises a valve body and a corrosion-resistant lining,
the corrosion-resistant lining is arranged at the position, contacting with the medium, in the valve body and used for preventing the medium from directly contacting with the valve body, so that the corrosion-resistant protection of the valve body is realized.
As a further improvement of the invention: the corrosion-resistant lining is made of high-grade stainless steel materials.
As a further improvement of the invention: the valve body is a butterfly valve which comprises a lower valve cover, a butterfly plate, a valve body and a driving device,
the lower valve cover is fixedly installed at the bottom of the valve body, the butterfly plate is movably arranged inside the valve body, and the driving device is installed on the upper portion of the valve body and used for driving the butterfly plate to rotate so as to open and close the valve body.
As a further improvement of the invention: sealing surfaces are arranged on two sides of the valve body, and the corrosion-resistant lining is arranged on the inner wall of the valve body and the sealing surfaces.
As a still further improvement of the invention: the butterfly valve is characterized in that a valve body sealing seat, a butterfly plate sealing seat and a pressing plate are further arranged at the bottom of the inner side of the valve body, the butterfly plate sealing seat is arranged on the upper portion of the valve body sealing seat, and the pressing plate is arranged on one side of the butterfly plate sealing seat.
As a still further improvement of the invention: a gasket is arranged between the lower valve cover and the valve body, a valve rod penetrates through the middle part of the butterfly plate, one end of the valve rod extends into the lower valve cover and is rotatably connected with the lower valve cover through a stamping bush and a self-lubricating shaft sleeve, the other end of the valve rod is connected with the driving device,
the driving device is connected with the valve body through a support, a packing layer is further arranged between the valve rod and the valve body, polytetrafluoroethylene or flexible graphite is filled in the packing layer, and the upper portion of the valve body is further connected with a disc spring assembly through a packing gland bolt.
As a still further improvement of the invention: the valve body is a knife gate valve, the knife gate valve comprises a flashboard, a valve body assembly, a valve cover assembly and a driving device,
the valve gap subassembly sets up valve body subassembly one side, the flashboard activity sets up inside the valve body subassembly, drive arrangement installs the valve gap subassembly is kept away from one side of valve body subassembly is used for driving the flashboard removes to realize opening and closing of valve body subassembly.
As a still further improvement of the invention: the corrosion-resistant liner is disposed on the valve body assembly and the bonnet assembly inner wall.
As a still further improvement of the invention: and a valve rod is fixedly arranged on one side of the flashboard, and one end of the valve rod, which is far away from the flashboard, is connected with the driving device.
As a still further improvement of the invention: a valve seat is arranged in the valve cover component, the flashboard penetrates through the valve seat and is movably matched with the valve seat, a sealing ring is also arranged between the flashboard and the valve seat,
a packing gland is arranged at one end of the valve cover component far away from the valve body component, a packing layer is formed among the packing gland, the valve rod and the valve cover component, polytetrafluoroethylene or flexible graphite is filled in the packing layer,
the valve body assembly is arranged on the valve cover assembly, the driving device is connected with the valve cover assembly through a plurality of connecting rods and connecting flanges, and a discharge/blowing port is formed in one end, far away from the valve cover assembly, of the valve body assembly.
Compared with the prior art, the invention has the beneficial effects that:
in the embodiment of the invention, the corrosion-resistant lining is arranged on the part, which is in contact with the medium, in the valve body, so that the medium is prevented from being in direct contact with the valve body, the corrosion-resistant protection of the valve body is realized, and the corrosion-resistant performance of the valve is improved.
Drawings
FIG. 1 is a first schematic structural view of a corrosion-resistant valve;
fig. 2 is a schematic structural diagram of a corrosion-resistant valve.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
Referring to fig. 1 and 2, the embodiment provides a corrosion-resistant valve, which includes a valve body and a corrosion-resistant liner 300, where the corrosion-resistant liner 300 is disposed at a medium-contacting portion in the valve body, and is used to prevent a medium from directly contacting the valve body, so as to achieve corrosion-resistant protection of the valve body.
In one embodiment, the corrosion resistant liner 300 is made of a high grade stainless steel material.
Referring to fig. 1, in an embodiment, the valve body is a butterfly valve 10, the butterfly valve 10 includes a lower valve cover 101, a butterfly plate 109, a valve body 110, and a driving device 115, the lower valve cover 101 is fixedly installed at the bottom of the valve body 110, the butterfly plate 109 is movably disposed inside the valve body 110, and the driving device 115 is installed at the upper portion of the valve body 110 and is used for driving the butterfly plate 109 to rotate so as to open and close the valve body 110.
Referring to fig. 1, in one embodiment, sealing surfaces are provided on both sides of the valve body 110, and the corrosion-resistant lining 300 is provided on the inner wall of the valve body 110 and the sealing surfaces, so as to prevent a medium from directly contacting the valve body 110 while flowing along the inside of the valve body 110, thereby improving the corrosion resistance of the valve body 110.
Referring to fig. 1, in an embodiment, a valve body sealing seat 106, a butterfly plate sealing seat 107 and a pressure plate 108 are further disposed at a bottom of an inner side of the valve body 110, the butterfly plate sealing seat 107 is disposed at an upper portion of the valve body sealing seat 106, and the pressure plate 108 is disposed at a side of the butterfly plate sealing seat 107.
Referring to fig. 1, in one embodiment, a gasket 102 is further disposed between the lower bonnet 101 and the valve body 110, a valve rod 105 is disposed through the middle of the butterfly plate 109, one end of the valve rod 105 extends into the lower bonnet 101 and is rotatably connected to the lower bonnet 101 through a stamped bushing 103 and a self-lubricating bushing 104, and the other end of the valve rod 105 is connected to the driving device 115.
The valve rod 105 is driven to rotate by the driving device 115, and then the butterfly plate 109 is driven to rotate, so that the valve body 110 is opened and closed.
Referring to fig. 1, in one embodiment, the driving device 115 is connected to the valve body 110 through a bracket 114, a packing layer 111 is further disposed between the valve stem 105 and the valve body 110, the packing layer 111 is filled with polytetrafluoroethylene or flexible graphite, and the upper portion of the valve body 110 is further connected to a disc spring assembly 112 through a packing gland bolt 113.
In one embodiment, the lower bonnet 101, the valve stem 105, the valve body seal seat 106, the pressure plate 108, the butterfly plate 109, the butterfly spring assembly 112, and the bracket 114 are all made of stainless steel, the gasket 102 is made of teflon or flexible graphite, the stamping bushing 103 is made of corrosion-resistant high-grade stainless steel, the self-lubricating bushing 104 is made of a composite material, the butterfly plate seal seat 107 is made of stainless steel + asbestos rubber sheet or graphite, and the valve body 110 and the gland bolt 113 are made of carbon steel.
Referring to fig. 2, in an embodiment, the valve body is a knife gate valve 20, the knife gate valve 20 includes a gate plate 204, a valve body assembly 206, a valve cover assembly 208, and a driving device 213, the valve cover assembly 208 is disposed on one side of the valve body assembly 206, the gate plate 204 is movably disposed inside the valve body assembly 206, and the driving device 213 is mounted on one side of the valve cover assembly 108 away from the valve body assembly 206 and is configured to drive the gate plate 204 to move, so as to open and close the valve body assembly 204.
Referring to fig. 2, in one embodiment, the corrosion resistant liner 300 is disposed on the inner walls of the valve body assembly 206 and the bonnet assembly 208 to prevent media from directly contacting the valve body assembly 206 and the bonnet assembly 208 as the media flows along the interior of the valve body assembly 206 and the bonnet assembly 208, thereby improving corrosion resistance.
Referring to fig. 2, in an embodiment, a valve rod 205 is fixedly disposed on one side of the gate plate 204, one end of the valve rod 205, which is far away from the gate plate 204, is connected to the driving device 213, and the driving device 213 drives the valve rod 205 to move up and down along the interior of the bonnet assembly 208, so as to drive the gate plate 204 to move up and down, thereby opening and closing the valve.
Referring to fig. 2, in an embodiment, a valve seat 203 is disposed inside the valve cover assembly 206, the shutter 204 penetrates through the valve seat 203 and is movably engaged with the valve seat 203, and a sealing ring 202 is further disposed between the shutter 204 and the valve seat 203.
Through the setting of sealing washer 202 for when flashboard 204 removes, can guarantee sealed effect.
Referring to fig. 2, in one embodiment, the valve body assembly 206 and the valve cover assembly 208 are connected by a middle seal ring 207 to achieve sealing therebetween.
Referring to fig. 2, in one embodiment, a packing gland 210 is disposed at an end of the valve cover assembly 208 away from the valve body assembly 206, a packing layer 209 is formed between the packing gland 210, the valve stem 205 and the valve cover assembly 208, and the packing layer 209 is filled with polytetrafluoroethylene or flexible graphite.
Referring to fig. 2, in one embodiment, the driving device 213 is connected to the bonnet assembly 208 through a plurality of connecting rods 211 and a connecting flange 212, and a bleed/blow port 201 is formed at an end of the valve body assembly 206 away from the bonnet assembly 208.
In one embodiment, the sealing ring 202 is made of teflon or rubber, the valve seat 203, the shutter 204, the valve stem 205, and the packing gland 210 are made of stainless steel, the valve body assembly 206, the valve cover assembly 208, and the connecting flange 212 are made of carbon steel, the middle sealing pad 207 is made of teflon or stainless steel + asbestos rubber sheet, and the connecting rod 211 is made of Q235/martensitic stainless steel.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims (10)

1. A corrosion-resistant valve is characterized by comprising a valve body and a corrosion-resistant lining,
the corrosion-resistant lining is arranged at the position, contacting with the medium, in the valve body and used for preventing the medium from directly contacting with the valve body, so that the corrosion-resistant protection of the valve body is realized.
2. A corrosion resistant valve in accordance with claim 1 wherein said corrosion resistant liner is formed of a high grade stainless steel material.
3. A corrosion resistant valve according to claim 1 or claim 2, wherein the valve body is a butterfly valve comprising a lower bonnet, a butterfly plate, a valve body and a drive means,
the lower valve cover is fixedly installed at the bottom of the valve body, the butterfly plate is movably arranged inside the valve body, and the driving device is installed on the upper portion of the valve body and used for driving the butterfly plate to rotate so as to open and close the valve body.
4. A corrosion resistant valve according to claim 3 wherein said valve body is provided with sealing surfaces on both sides and said corrosion resistant liner is provided on said valve body inner wall and on said sealing surfaces.
5. The corrosion-resistant valve according to claim 3, wherein a valve body sealing seat, a butterfly plate sealing seat and a pressure plate are further arranged at the bottom of the inner side of the valve body, the butterfly plate sealing seat is arranged at the upper part of the valve body sealing seat, and the pressure plate is arranged at one side of the butterfly plate sealing seat.
6. The corrosion-resistant valve according to claim 3, wherein a gasket is further arranged between the lower valve cover and the valve body, a valve rod is arranged in the middle of the butterfly plate in a penetrating manner, one end of the valve rod extends into the lower valve cover and is rotatably connected with the lower valve cover through a stamping bush and a self-lubricating shaft sleeve, the other end of the valve rod is connected with the driving device,
the driving device is connected with the valve body through a support, a packing layer is further arranged between the valve rod and the valve body, polytetrafluoroethylene or flexible graphite is filled in the packing layer, and the upper portion of the valve body is further connected with a disc spring assembly through a packing gland bolt.
7. The corrosion-resistant valve according to claim 1 or 2, wherein the valve body is a knife gate valve, the knife gate valve comprises a gate plate, a valve body assembly, a valve cover assembly and a driving device,
the valve gap subassembly sets up valve body subassembly one side, the flashboard activity sets up inside the valve body subassembly, drive arrangement installs the valve gap subassembly is kept away from one side of valve body subassembly is used for driving the flashboard removes to realize opening and closing of valve body subassembly.
8. A corrosion resistant valve in accordance with claim 7 wherein said corrosion resistant liner is disposed on an inner wall of said valve body assembly and said bonnet assembly.
9. A corrosion resistant valve according to claim 7 wherein a valve stem is fixedly disposed on one side of said gate, said valve stem being connected to said drive means at an end remote from said gate.
10. A corrosion resistant valve according to claim 7, wherein a valve seat is provided inside said valve cover assembly, said shutter plate extends through said valve seat and is movably engaged with said valve seat, and a sealing ring is provided between said shutter plate and said valve seat,
a packing gland is arranged at one end of the valve cover component far away from the valve body component, a packing layer is formed among the packing gland, the valve rod and the valve cover component, polytetrafluoroethylene or flexible graphite is filled in the packing layer,
the valve body assembly is arranged on the valve cover assembly, the driving device is connected with the valve cover assembly through a plurality of connecting rods and connecting flanges, and a discharge/blowing port is formed in one end, far away from the valve cover assembly, of the valve body assembly.
CN202210175535.7A 2022-02-25 2022-02-25 Corrosion-resistant valve Pending CN114542777A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210175535.7A CN114542777A (en) 2022-02-25 2022-02-25 Corrosion-resistant valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210175535.7A CN114542777A (en) 2022-02-25 2022-02-25 Corrosion-resistant valve

Publications (1)

Publication Number Publication Date
CN114542777A true CN114542777A (en) 2022-05-27

Family

ID=81679699

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210175535.7A Pending CN114542777A (en) 2022-02-25 2022-02-25 Corrosion-resistant valve

Country Status (1)

Country Link
CN (1) CN114542777A (en)

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