CN113883287A - High-temperature wear-resistant cut-off valve - Google Patents
High-temperature wear-resistant cut-off valve Download PDFInfo
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- CN113883287A CN113883287A CN202010626023.9A CN202010626023A CN113883287A CN 113883287 A CN113883287 A CN 113883287A CN 202010626023 A CN202010626023 A CN 202010626023A CN 113883287 A CN113883287 A CN 113883287A
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- 238000007789 sealing Methods 0.000 claims abstract description 86
- 238000007667 floating Methods 0.000 claims abstract description 40
- 239000000956 alloy Substances 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 7
- 238000004939 coking Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 abstract description 2
- 239000012535 impurity Substances 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910002804 graphite Inorganic materials 0.000 description 6
- 239000010439 graphite Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000003250 coal slurry Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- -1 power plants Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- 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
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- 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
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- 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
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- 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
- F16K3/30—Details
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- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
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- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
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- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The invention discloses a high-temperature wear-resistant cut-off valve which comprises a valve body, a valve cover and a flashboard, wherein an inlet and outlet flow passage is formed in the valve body, the valve cover is buckled on the upper part of the valve body to form an upper valve cavity communicated with the inlet and outlet flow passage, and a lower valve cavity communicated with the inlet and outlet flow passage is formed in the lower part of the valve body; the valve seat comprises two fixed baffles and two floating sealing plates, the flashboards and the floating sealing plates are matched to form a sealing pair, and the connecting passages of the inlet and outlet flow passages and the upper valve cavity and the lower valve cavity are sealed. The valve seat is lengthened, when the flashboard is in the full-open and full-close processes and in place, the lengthened valve seat can seal and prevent a medium from entering the upper valve cavity and the lower valve cavity of the valve, a good sealing effect is achieved, the sealing performance of the valve is improved, the valve seat has the performances of coking prevention, high temperature resistance and wear resistance, and the service life of the valve is prolonged.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a high-temperature wear-resistant cut-off valve.
Background
The valve for controlling the opening and closing of the pipeline medium is a common flat valve under various severe medium working conditions in the industries of chemical industry, petroleum, natural gas, power plants, coal chemical industry, construction, sewage treatment, light industry and the like. In the valve working process, when impurities in a pipeline, such as welding slag, metal wires, fibers, coal powder, particles, catalyst, slag and the like, can enter an inner cavity of a valve body, various severe impurities, such as catalyst, coal slurry, slag and the like, can coke easily at low temperature, when the valve is opened and closed, the impurities can be deposited or blocked between sealing surfaces, and because a common valve does not have an impurity shearing function, the valve is easy to block, the sealing surfaces are pulled to cause the valve to be incapable of being opened and closed, and sealing leakage can be caused.
Disclosure of Invention
The invention aims to provide a high-temperature wear-resistant cut-off valve aiming at the defects of the prior art.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a high-temperature wear-resistant cut-off valve comprises a valve body, a valve cover and a gate plate, wherein an inlet and outlet flow passage is formed in the valve body, the valve cover is buckled on the upper portion of the valve body to form an upper valve cavity communicated with the inlet and outlet flow passage, a lower valve cavity communicated with the inlet and outlet flow passage is formed in the lower portion of the valve body, and the upper valve cavity and the lower valve cavity are oppositely arranged; the valve comprises a valve body and is characterized in that valve seats matched with a gate plate are arranged in an upper valve cavity and a lower valve cavity of the valve body, through holes matched with an inlet and outlet flow passage are formed in the middle of the valve seats, each valve seat comprises two fixed baffle plates which are oppositely arranged in parallel and two floating sealing plates which are arranged on the inner sides of the fixed baffle plates, elastic pressure devices are arranged between the fixed baffle plates and the floating sealing plates, flow guide holes matched with the inlet and outlet flow passage are formed in the gate plate, the gate plate is arranged between the two floating sealing plates and matched with the floating sealing plates to form a sealing pair, and connecting passages of the inlet and outlet flow passage and the upper valve cavity and the lower valve cavity are sealed.
Furthermore, the elastic pressure device comprises a pre-tightening spring, a mounting groove is formed in the inner side wall of the fixed baffle, the pre-tightening spring is arranged in the mounting groove, one end of the pre-tightening spring is abutted against the side wall of the mounting groove, and the other end of the pre-tightening spring is abutted against the floating sealing plate.
Furthermore, the corners of the contact positions of the sealing surfaces of the flashboard and the floating sealing plate are all set to be right angles.
Furthermore, the surfaces of the sealing surfaces of the flashboard and the floating sealing plate are sprayed with hard alloy materials by adopting spray welding.
Furthermore, the upper valve cavity and the valve body connecting passage and the lower valve cavity and the valve body connecting passage are correspondingly provided with first clamping tables, and the fixed baffle is clamped on the first clamping tables; the inner side of the first clamping table is provided with a second clamping table, and the floating sealing plate is arranged on the second clamping table in a sliding mode.
Further, a sealing gasket is arranged between the floating sealing plate and the valve body.
Furthermore, a fixing frame is arranged on the outer side wall of the fixing baffle plate, and the fixing frame is connected with the valve body through bolts.
Furthermore, a radiating fin is arranged on the outer side wall of the upper part of the valve cover.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the length of the valve seat is lengthened, when the flashboard is fully opened and fully closed and is in place, the lengthened valve seat can seal and prevent a medium from entering an upper valve cavity and a lower valve cavity of the valve, the sealing surface area of the valve seat is larger than that of the flashboard, so that a good sealing effect can be achieved, the sealing property of the valve is greatly improved, and the valve has the performances of coking resistance, high temperature resistance and wear resistance, and the service life of the valve is prolonged;
the valve seat extends from the upper valve cavity to the lower valve cavity, so that the flashboard is ensured to be uniformly contacted and stressed with the valve seat in the opening or closing process;
under the action of a pre-tightening spring, the sealing surfaces of the flashboard and the valve seat are in tight contact, so that the valve plate has bidirectional sealing zero leakage and large abrasion compensation capacity;
the corners of the sealing surfaces of the flashboard and the valve seat are processed into right angles, and various impurities attached to the sealing surfaces can be scraped under the action of the pre-tightening spring, so that hard and soft impurities in a pipeline can be cut off in the opening and closing process of the valve, the impurities are effectively prevented from being attached to the sealing surfaces, the leakage of the valve is prevented, the sealing surfaces are protected, and the service life of the valve is prolonged;
according to the invention, the surfaces of the sealing surfaces of the flashboard and the floating sealing plate are sprayed with the high-hardness hard alloy material by adopting spray welding, so that the sealing surfaces of the flashboard and the floating sealing plate have excellent wear resistance, corrosion resistance, coking resistance, heat resistance and oxidation resistance, and the service life of the valve is further prolonged;
the valve seat and the flashboard sealing pair are completely attached and sealed in a lengthened parallel mode, the structure is compact and simple, the sealing performance is good, and the service life of the valve is effectively prolonged.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic view of the shutter arrangement of the present invention;
FIG. 4 is a side view of the shutter of the present invention;
FIG. 5 is a schematic diagram of a floating seal configuration according to the present invention.
In the figure: 1. a valve body; 2. a valve cover; 3. a shutter plate; 4. an inlet and outlet flow passage; 5. an upper valve cavity; 6. a lower valve cavity; 7. fixing a baffle plate; 8. a floating seal plate; 9. mounting grooves; 10. pre-tightening the spring; 11. a flow guide hole; 12. right angle; 13. a first chuck table; 14. a second chuck table; 15. a gasket; 16. a fixed mount; 17. a valve stem; 18. a support; 19. a drive device; 20. a heat sink; 21. a graphite gasket; 22. a first annular groove; 23. a second annular groove.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
As shown in fig. 1-5, the high-temperature wear-resistant cut-off valve according to the specific embodiment of the present invention includes a valve body 1, a valve cover 2 and a gate plate 3, wherein an inlet/outlet flow passage 4 is formed on the valve body 1, the valve cover 2 is fastened to the upper portion of the valve body 1 to form an upper valve cavity 5 communicated with the inlet/outlet flow passage 4, a lower valve cavity 6 communicated with the inlet/outlet flow passage 4 is formed in the lower portion of the valve body 1, and the upper valve cavity 5 and the lower valve cavity 6 are oppositely disposed; a valve seat matched with the gate plate 3 is arranged in an upper valve cavity 5 and a lower valve cavity 6 of the valve body 1, the valve seat is inserted into the lower valve cavity 6 after passing through the inlet and outlet flow passage 4 from the upper valve cavity 5, a through hole matched with the inlet and outlet flow passage 4 is formed in the middle of the valve seat, the valve seat comprises two fixed baffles 7 which are oppositely arranged in parallel and two floating sealing plates 8 which are arranged on the inner sides of the fixed baffles 7, an elastic pressure device is arranged between the fixed baffles 7 and the floating sealing plates 8, the elastic pressure device is a pre-tightening spring 10, a plurality of mounting grooves 9 are uniformly formed in the inner side wall of the fixed baffle 7 along the length direction of the fixed baffle 7, the pre-tightening spring 10 is arranged in the mounting groove 9, one end of the pre-tightening spring 10 is abutted against the side wall of the mounting groove 9, and the other end of the pre-tightening spring 10 is abutted against the floating sealing plates 8, the gate plate 3 is provided with a flow guide hole 11 matched with the inlet and outlet flow passage 4, the gate plate 3 is arranged between the two floating sealing plates 8 and matched with the floating sealing plates 8 to form a sealing pair, and a connecting passage of the inlet and outlet flow passage 4 and the upper valve cavity 5 and the lower valve cavity 6 is sealed. The invention lengthens the length of the valve seat, and the lengthened valve seat can seal and prevent medium from entering the upper valve cavity 5 and the lower valve cavity 6 of the valve when the flashboard is in full opening and full closing processes and in place. The sealing surface area of the valve seat is larger than that of the flashboard, so that a good sealing effect can be achieved, the sealing performance of the valve is greatly improved, and the valve has the performances of coking prevention, high temperature resistance and wear resistance, and the service life of the valve is prolonged.
Furthermore, the corners of the contact positions of the sealing surfaces of the flashboard 3 and the floating sealing plate 8 are set to be right angles 12. Because the valve seat is provided with the pre-tightening spring, the sealing surfaces of the flashboard and the floating sealing plate are always tightly attached in the opening and closing process of the valve, the corners of the sealing surfaces of the flashboard and the valve seat are all processed into right angles, and various impurities attached to the sealing surfaces can be scraped under the action of the pre-tightening spring. The sealing face contact position corner of the floating sealing plate of the flashboard and the valve seat is processed into a right angle, the principle of a plate cutting machine is met, hard and soft impurities in a pipeline such as welding rods, welding slag, coal slurry, fibers, powder, particles and metal wires can be cut off in the opening and closing process of the valve, the impurities are effectively prevented from being attached to the sealing face, the leakage of the valve is prevented, the sealing face is protected, and the service life of the valve is prolonged.
Furthermore, the surfaces of the sealing surfaces of the flashboard 3 and the floating sealing plate 8 are sprayed with hard alloy materials by spray welding, the thickness of the hard alloy materials is 2-3mm, and the hard alloy is alloy powder which is used for thermal spraying and is fully called tungsten carbide alloy powder. The sealing surfaces of the flashboard 3 and the floating sealing plate 8 have excellent wear resistance, corrosion resistance, heat resistance and oxidation resistance, thereby further prolonging the service life of the valve.
Furthermore, a first clamping table 13 is correspondingly arranged at a connecting passage of the upper valve cavity 5 and the valve body 1 and a connecting passage of the lower valve cavity 6 and the valve body 1, the fixed baffle 7 is clamped on the first clamping table 13, and a through hole in the middle of the fixed baffle 7 corresponds to the inlet/outlet flow passage 4; the inner side of the first clamping table 13 is provided with a second clamping table 14, the first clamping table 13 and the second clamping table 14 form a step shape, the floating sealing plate 8 is arranged on the second clamping table 14 in a sliding mode, and the through hole in the middle of the floating sealing plate 8 corresponds to the inlet and outlet flow passage 4.
Further, a sealing gasket 15 and a graphite gasket 21 are arranged between the floating sealing plate 8 and the valve body 1, the sealing gasket 15 can be made of rubber, and the sealing gasket 15 and the graphite gasket 21 are arranged between the floating sealing plate 8 and the second clamping table 14.
Further, one side of the inner ring side of the through hole in the middle of the floating sealing plate 8, which is far away from the flashboard, is provided with a first annular groove 22 for accommodating the sealing gasket 15 and the graphite gasket 21, the floating sealing plate 8 is provided with a screw hole, and a bolt sequentially penetrates through the screw hole, the graphite gasket and the sealing gasket to be fixed together. The graphite gasket and the sealing gasket are tensioned by the bolt, so that the sealing gasket expands to achieve a good sealing effect.
Further, a second annular groove 23 is formed in the inner side of the first annular groove 22, and the second clamping table 14 is matched with the second annular groove 23.
Further, a fixing frame 16 is arranged on the outer side wall of the fixed baffle 7, the fixing frame 16 is connected with the valve body 1 through bolts, and for a valve with large pressure bearing, the fixing frame 16 can be arranged on the outer side of the fixed baffle 7, so that the stability of a valve seat can be kept.
Further, the invention also comprises a valve rod 17, a support 18 and a driving device 19, wherein the support is arranged above the valve cover, the driving device is arranged above the support, the lower end of the valve rod is connected with a top plate of the flashboard, the upper end of the valve rod extends out of the valve cover and the support through the upper valve cavity to be connected with the driving device, and the driving device can be driven by hand, electricity, gears, cylinders and the like, which is the prior art and is not described again.
Furthermore, the outer side wall of the upper part of the valve cover 2 is provided with a radiating fin 20, so that heat generated after the valve is opened and closed for many times can be conveniently radiated.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A high-temperature wear-resistant cut-off valve comprises a valve body (1), a valve cover (2) and a gate plate (3), and is characterized in that an inlet and outlet flow passage (4) is formed in the valve body (1), the valve cover (2) is buckled on the upper portion of the valve body (1) to form an upper valve cavity (5) communicated with the inlet and outlet flow passage (4), a lower valve cavity (6) communicated with the inlet and outlet flow passage (4) is arranged on the lower portion of the valve body (1), and the upper valve cavity (5) and the lower valve cavity (6) are oppositely arranged; valve seats matched with the flashboard (3) are arranged in the upper valve cavity (5) and the lower valve cavity (6) of the valve body (1), the middle part of the valve seat is provided with a through hole matched with the inlet and outlet flow passage (4), the valve seat comprises two fixed baffles (7) which are oppositely arranged in parallel and two floating sealing plates (8) which are arranged at the inner sides of the fixed baffles (7), an elastic pressure device is arranged between the fixed baffle plate (7) and the floating sealing plate (8), the flashboard (3) is provided with a flow guide hole (11) matched with the inlet and outlet flow passage (4), the flashboard (3) is arranged between the two floating sealing plates (8) and is matched with the floating sealing plates (8) to form a sealing pair, and the connecting channel of the inlet/outlet flow passage (4) and the upper valve cavity (5) and the lower valve cavity (6) is sealed.
2. A high-temperature wear-resistant cut-off valve as claimed in claim 1, wherein the elastic pressure device comprises a pre-tightening spring (10), a mounting groove (9) is formed in the inner side wall of the fixed baffle (7), the pre-tightening spring (10) is arranged in the mounting groove (9), one end of the pre-tightening spring (10) abuts against the side wall of the mounting groove (9), and the other end of the pre-tightening spring (10) abuts against the floating sealing plate (8).
3. A high temperature and wear resistant shut-off valve according to claim 1, characterized in that the corners of the sealing surface contact positions of the gate plate (3) and the floating sealing plate (8) are set to be right angles (12).
4. A high-temperature wear-resistant cut-off valve as claimed in claim 1, wherein the sealing surface surfaces of the gate plate (3) and the floating sealing plate (8) are sprayed with hard alloy material by spray welding.
5. The high-temperature wear-resistant cut-off valve is characterized in that a first clamping table (13) is correspondingly arranged at a connecting channel of the upper valve cavity (5) and the valve body (1) and a connecting channel of the lower valve cavity (6) and the valve body (1), and the fixed baffle (7) is clamped on the first clamping table (13); the inner side of the first clamping table (13) is provided with a second clamping table (14), and the floating sealing plate (8) is arranged on the second clamping table (14) in a sliding mode.
6. A high temperature, wear resistant shut off valve according to claim 1 characterized in that a sealing gasket (15) is provided between the floating sealing plate (8) and the valve body (1).
7. A high-temperature wear-resistant cut-off valve as claimed in claim 1, characterized in that a fixing frame (16) is arranged on the outer side wall of the fixing baffle (7), and the fixing frame (16) is connected with the valve body (1) through bolts.
8. A wear resistant shear valve as claimed in claim 1, characterized in that the valve cover (2) is provided with fins (20) on the upper outer side wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010626023.9A CN113883287A (en) | 2020-07-01 | 2020-07-01 | High-temperature wear-resistant cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010626023.9A CN113883287A (en) | 2020-07-01 | 2020-07-01 | High-temperature wear-resistant cut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113883287A true CN113883287A (en) | 2022-01-04 |
Family
ID=79012277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010626023.9A Pending CN113883287A (en) | 2020-07-01 | 2020-07-01 | High-temperature wear-resistant cut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113883287A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635985A (en) * | 2022-03-22 | 2022-06-17 | 重庆川武仪表有限公司 | Wear-resistant black water valve |
-
2020
- 2020-07-01 CN CN202010626023.9A patent/CN113883287A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635985A (en) * | 2022-03-22 | 2022-06-17 | 重庆川武仪表有限公司 | Wear-resistant black water valve |
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