CN107300017B - Three-butterfly-piece elastic sealing switching valve - Google Patents
Three-butterfly-piece elastic sealing switching valve Download PDFInfo
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- CN107300017B CN107300017B CN201710746932.4A CN201710746932A CN107300017B CN 107300017 B CN107300017 B CN 107300017B CN 201710746932 A CN201710746932 A CN 201710746932A CN 107300017 B CN107300017 B CN 107300017B
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- butterfly
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- valve seat
- elastic
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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
- 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
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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
- 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
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/44—Details of seats or valve members of double-seat valves
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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
- F16K31/12—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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multiple-Way Valves (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a three-butterfly-piece elastic sealing switching valve of a combustion heat storage device, which comprises a valve seat, a cylinder, a first butterfly piece, a second butterfly piece and a third butterfly piece, wherein the first butterfly piece is arranged on the valve seat; the outer ring surface of the first butterfly piece is provided with N linear grooves, the N linear grooves divide the outer ring surface into N fan-shaped elastic pieces, and the fan-shaped elastic pieces elastically support the second butterfly piece; the third butterfly piece is arranged at the front end of the second butterfly piece, and when the three-butterfly piece elastic sealing switching valve is closed, the double-butterfly piece elastic sealing work is carried out; and the sealing cavity between the third butterfly sheet and the second butterfly sheet is inflated and sealed by utilizing the pressure gas in the cylinder, so that gas leakage is prevented to the maximum extent.
Description
Technical Field
The invention relates to a three-butterfly-piece elastic sealing switching valve, in particular to the technical field of heat accumulating type RTO combustion devices for waste gas treatment.
Background
The present regenerative combustion device (RTO) heats the organic waste gas discharged by production through regenerative ceramics, the temperature is rapidly raised, under the combustion heating action of gas in a hearth, the temperature reaches 680-1050 ℃, VOCs in the organic waste gas are directly decomposed into carbon dioxide and water vapor under the high temperature, tasteless high-temperature flue gas is formed, then the heat storage ceramics with low temperature flows through, a large amount of heat energy is transferred to a heat accumulator from the flue gas, the heat storage ceramics are used for heating the organic waste gas to be decomposed of next circulation, the self temperature of the high-temperature flue gas is greatly reduced, heat exchange is carried out through a heat recovery system and other media, the temperature of the flue gas is further reduced, and finally the flue gas is discharged to outdoor atmosphere. The valve switching type RTO has the advantages of low operating cost, high organic waste gas treatment efficiency, no catalyst poisoning phenomenon and the like, and the aim of preheating VOC waste gas is fulfilled by changing the direction of air flow through the switching of the valves by two or more ceramic packed beds. However, the air direction switching valve of the prior valve type RTO device has poor sealing performance due to large diameter. In order to improve the defects of the existing valve type RTO device, the defects can be solved only by improving the structure of the wind direction switching valve to improve the sealing performance.
Disclosure of Invention
The invention aims to provide a three-butterfly-piece elastic sealing switching valve, which improves the waste gas purification quality and efficiency of a heat storage combustion system by improving the structure of the switching valve.
In view of the above technical problem, the present invention provides a three-butterfly elastic sealing switching valve, including: valve seat, cylinder, first butterfly piece, second butterfly piece and third butterfly piece. The valve seat is fixedly arranged on a ventilation opening of a gas distribution box of the heat accumulation combustion device, the outer valve seat sealing ring is arranged on an outer valve port of the valve seat, and the inner valve seat sealing ring is arranged on an inner valve port of the valve seat. The top of the cylinder push-pull rod is provided with a fixed disk. The first butterfly sheet is fixedly installed on the disc surface of the fixed disc, the outer ring surface of the first butterfly sheet is provided with N linear grooves, and the N linear grooves divide the outer ring surface into N fan-shaped elastic sheets; and an annular gasket is fixedly arranged on the inner side of the outer ring surface. The second butterfly sheet is fixed on the annular gasket of the first butterfly sheet, the diameter of the first butterfly sheet is larger than that of the second butterfly sheet, and the thickness of the first butterfly sheet is larger than that of the second butterfly sheet. The outer valve seat sealing ring of the valve seat is in contact with the elastic sealing surface on the outer side of the second butterfly sheet under the thrust action of the cylinder push-pull rod, the elastic sealing surface of the second butterfly sheet is in contact fit with the fan-shaped elastic sheet of the first butterfly sheet after being deformed and bent, and the fan-shaped elastic sheet generates elasticity on the elastic sealing surface of the second butterfly sheet after being bent. The third butterfly sheet is fixedly arranged on the annular wall surface of the second butterfly sheet; and the butterfly piece sealing surface of the third butterfly piece is deformed and bent under the thrust action of the cylinder push-pull rod and then clings to the inner valve seat sealing ring of the valve seat, and the thickness of the third butterfly piece is smaller than that of the second butterfly piece. The elastic sealing switching valve of the third butterfly sheet is closed, and a sealing cavity is formed between the third butterfly sheet and the second butterfly sheet.
The invention is further improved, and the adopted preferable technical measures are as follows: a plurality of elastic pieces are symmetrically arranged between the third butterfly piece and the second butterfly piece, and the elastic pieces are fixed on the elastic sealing surface of the second butterfly piece.
The invention is further improved, and the adopted preferable technical measures are as follows: the first butterfly sheet, the second butterfly sheet and the third butterfly sheet are fixedly arranged on a rod body at the top end of the cylinder push-pull rod. The interior of the push-pull rod is provided with a ventilation flow passage, an air inlet of the ventilation flow passage is communicated with an upper cylinder chamber of the cylinder, and an air outlet of the ventilation flow passage is arranged between the second butterfly sheet and the third butterfly sheet. The air inlet pipe of the upper cylinder chamber of the cylinder is provided with a scavenging control valve. And the scavenging control valve is opened, and the pressure gas in the upper cylinder chamber enters a sealing cavity between the third butterfly sheet and the second butterfly sheet through the ventilation flow passage to perform pressure sealing work.
Drawings
Fig. 1 is a schematic diagram of the three-butterfly-piece elastic sealing switching valve.
Fig. 2 is a schematic closing operation diagram of the three-butterfly-piece elastic sealing switching valve in fig. 1.
Fig. 3 is a top view of the first butterfly of the three-butterfly elastic sealing switching valve of the invention.
FIG. 4 is a schematic view of the installation of the elastic piece of the elastic sealing switching valve with three butterfly pieces.
FIG. 5 is a schematic view of the operation of the pneumatic sealing of the elastic sealing switching valve with three butterfly plates.
Symbolic description of main parts
101-a valve seat; 102-a gas distribution box; 103-a vent; 104-outer valve seat sealing ring; 105-outer valve port; 106-inner seat seal ring; 107-inner valve port; 201-a cylinder; 202-a push-pull rod; 203-fixing disc; 301-a first butterfly; 302-outer ring surface; 303-straight line groove; 304-a fan-shaped elastic sheet; 401-a second butterfly; 402-an annular shim; 403-resilient sealing surface; 501 third butterfly; 502-a butterfly sheet sealing surface; 503-ring-shaped wall; 504-a sealed cavity; 601-an elastic sheet; 604-a rod body; 605-a vent flow channel; 606-inlet holes; 607-upper cylinder chamber; 608-vent hole; 609-an air inlet pipe; 610-scavenging control valve.
Advantageous effects
Based on the technical scheme, the elastic sealing switching valve with the three butterfly pieces has at least one of the following beneficial effects:
1, a first butterfly sheet of the elastic sealing switching valve of the three butterfly sheets is used as an elastic pressure sealing supporting plate to elastically support a second butterfly sheet so as to prevent gas leakage caused by deformation of the second butterfly sheet;
2, the second butterfly sheet and the third butterfly sheet of the three-butterfly-sheet elastic sealing switching valve work in an elastic sealing mode simultaneously, so that gas leakage is effectively prevented;
and 3, the three butterfly pieces elastically seal a sealing cavity between the second butterfly piece and the third butterfly piece of the switching valve, and the gas is inflated and sealed by introducing pressure gas into the cylinder, so that gas leakage is prevented to the maximum extent.
Detailed Description
In order that the objects, technical solutions and advantages of the present invention will become more apparent, the present invention will be further described in detail with reference to the accompanying drawings in conjunction with the following specific embodiments.
First embodiment
As shown in fig. 1, the three-butterfly elastic sealing switching valve comprises: the valve seat 101, the air cylinder 201, the first butterfly sheet 301, the second butterfly sheet 401 and the third butterfly sheet 501. The valve seat 101 is fixedly mounted on the vent 103 of the regenerative burner gas distribution box 102, the outer valve seat sealing ring 104 is mounted on the outer valve opening 105 of the valve seat 101, and the inner valve seat sealing ring 106 is mounted on the inner valve opening 107 of the valve seat 101. The top of the push-pull rod 202 of the cylinder 201 is provided with a fixed disc 203. As shown in fig. 2 and 3, the first tab 301 is fixed to the surface of the fixed disk 203, eight linear grooves 303 are formed in the outer annular surface 302 of the first tab 301, and the eight linear grooves 303 divide the outer annular surface 302 into eight fan-shaped elastic pieces 304. An annular shim 402 is fixedly mounted on the inner side of the outer annular surface 302 of the first butterfly fin 301. The second tab 401 is fixed to the annular pad 402 of the first tab 301, the diameter of the first tab 301 is greater than the diameter of the second tab 401, and the thickness of the first tab 301 is greater than the thickness of the second tab 401. The outer valve seat sealing ring 104 of the valve seat 101 and the elastic sealing surface 403 on the outer side of the second butterfly piece 401 are contacted with each other under the thrust action of the push-pull rod 202 of the air cylinder 201, the elastic sealing surface 403 of the second butterfly piece 401 is deformed and bent to contact and attach with the fan-shaped elastic piece 304 of the first butterfly piece 301, and the fan-shaped elastic piece 304 bends to generate elastic force on the elastic sealing surface 403 of the second butterfly piece 401. The third butterfly piece 501 is fixedly arranged on the annular wall 503 of the second butterfly piece 401; the butterfly sealing surface 502 of the third butterfly piece 501 deforms and bends under the thrust action of the push-pull rod 202 of the cylinder 201 and then clings to the inner valve seat sealing ring 106 of the valve seat 101, and the thickness of the third butterfly piece 501 is smaller than that of the second butterfly piece 401; the three-butterfly-piece elastic sealing switching valve is closed, and a sealing cavity 504 is formed between the third butterfly piece 501 and the second butterfly piece 401. As shown in fig. 4, a plurality of elastic pieces 601 are symmetrically installed between the third butterfly piece 501 and the second butterfly piece 401, and the elastic pieces 601 are fixed on the elastic sealing surface 403 of the second butterfly piece 401.
So far, the first embodiment of the elastic sealing switching valve with three butterfly plates of the invention is described.
Second, second embodiment
As shown in fig. 5, the first butterfly tab 301, the second butterfly tab 401 and the third butterfly tab 501 are fixedly mounted on a rod body 604 at the top end of the push-pull rod 202 of the cylinder 201. A ventilation channel 605 is formed in the push-pull rod 202, an air inlet hole 606 of the ventilation channel 605 is communicated with the upper cylinder chamber 607 of the cylinder 201, and an air outlet hole 608 of the ventilation channel 605 is formed between the second butterfly plate 401 and the third butterfly plate 501. A scavenging control valve 610 is mounted on an intake pipe 609 of the upper cylinder chamber 607 of the cylinder 201. The scavenging control valve 610 is opened, and the pressurized gas in the upper cylinder chamber 607 enters the seal cavity 504 between the third butterfly flap 501 and the second butterfly flap 401 through the breather flow passage 605, and the pressure sealing operation is performed.
So far, the second embodiment of the elastic sealing switching valve with three butterfly blades of the invention is described.
The above-mentioned embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above-mentioned embodiments are only examples of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The utility model provides a three butterfly piece elastic seal diverter valves which characterized in that includes:
the valve seat is fixedly arranged on a vent of a gas distribution box of the heat accumulation combustion device, the outer valve seat sealing ring is arranged on an outer valve port of the valve seat, and the inner valve seat sealing ring is arranged on an inner valve port of the valve seat;
the top of a push-pull rod of the cylinder is provided with a fixed disc;
the first butterfly sheet is fixedly installed on the disc surface of the fixed disc, and the outer ring surface of the first butterfly sheet is provided with N linear grooves which divide the outer ring surface into N fan-shaped elastic sheets; an annular gasket is fixedly arranged on the inner side of the outer ring surface;
the second butterfly sheet is fixed on the annular gasket of the first butterfly sheet, the diameter of the first butterfly sheet is larger than that of the second butterfly sheet, and the thickness of the first butterfly sheet is larger than that of the second butterfly sheet; the outer valve seat sealing ring of the valve seat is in mutual contact with the elastic sealing surface on the outer side of the second butterfly piece under the thrust action of the cylinder push-pull rod, the elastic sealing surface of the second butterfly piece is in contact fit with the fan-shaped elastic piece of the first butterfly piece after being deformed and bent, and the fan-shaped elastic piece generates elasticity on the elastic sealing surface of the second butterfly piece after being bent;
the third butterfly sheet is fixedly arranged on the annular wall surface of the second butterfly sheet; the butterfly piece sealing surface of the third butterfly piece is deformed and bent under the thrust action of the cylinder push-pull rod and then clings to the inner valve seat sealing ring of the valve seat, and the thickness of the third butterfly piece is smaller than that of the second butterfly piece; the elastic sealing switching valve of the third butterfly sheet is closed, and a sealing cavity is formed between the third butterfly sheet and the second butterfly sheet.
2. The resilient seal switching valve of claim 1, wherein: a plurality of elastic pieces are symmetrically arranged between the third butterfly piece and the second butterfly piece, and the elastic pieces are fixed on the elastic sealing surface of the second butterfly piece.
3. The triple-butterfly-piece elastic-seal switching valve according to claim 1 or 2, characterized in that: the first butterfly sheet, the second butterfly sheet and the third butterfly sheet are fixedly arranged on a rod body at the top end of the cylinder push-pull rod; a ventilation flow passage is formed in the push-pull rod, an air inlet of the ventilation flow passage is communicated with an upper cylinder chamber of the cylinder, and an air outlet of the ventilation flow passage is formed between the second butterfly sheet and the third butterfly sheet; and a scavenging control valve is arranged on an air inlet pipe of the upper cylinder chamber of the cylinder, the scavenging control valve is opened, and pressure gas in the upper cylinder chamber enters a sealing cavity between the third butterfly sheet and the second butterfly sheet through the ventilation flow passage to perform pressure sealing work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710746932.4A CN107300017B (en) | 2017-08-27 | 2017-08-27 | Three-butterfly-piece elastic sealing switching valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710746932.4A CN107300017B (en) | 2017-08-27 | 2017-08-27 | Three-butterfly-piece elastic sealing switching valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107300017A CN107300017A (en) | 2017-10-27 |
| CN107300017B true CN107300017B (en) | 2023-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710746932.4A Active CN107300017B (en) | 2017-08-27 | 2017-08-27 | Three-butterfly-piece elastic sealing switching valve |
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| CN (1) | CN107300017B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3919234A1 (en) * | 1989-06-13 | 1990-12-20 | Rappold & Co Gmbh Hermann | Flap valve with sealing spring - has sealing spring, with valve closed, displaced by inclined sealing surface against action of tensioning spring |
| CN201972790U (en) * | 2011-01-25 | 2011-09-14 | 浙江亿日气动科技有限公司 | Butterfly sheet of exhaust brake butterfly valve and exhaust brake butterfly valve thereof |
| CN102182563A (en) * | 2011-01-25 | 2011-09-14 | 浙江亿日气动科技有限公司 | Pressure limiting seal piston and exhaust brake butterfly valve thereof |
| DE102011106744B3 (en) * | 2011-06-28 | 2012-12-27 | Pierburg Gmbh | Valve device for controlling an exhaust gas flow of an internal combustion engine |
| CN103075526B (en) * | 2013-01-31 | 2014-08-13 | 石家庄市长宏阀门有限公司 | Butterfly valve with inflation seal valve plate |
| CN103438228B (en) * | 2013-08-20 | 2015-09-09 | 山东莱德机械有限公司 | Selfsealings centre-pivoted butterfly valve |
| CN106439064A (en) * | 2016-12-07 | 2017-02-22 | 无锡优耐特净化装备有限公司 | Three-eccentric manual butterfly valve for turbine |
| CN207145624U (en) * | 2017-08-27 | 2018-03-27 | 江苏中科机械有限公司 | Three tab (s) elastic packing switching valves |
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2017
- 2017-08-27 CN CN201710746932.4A patent/CN107300017B/en active Active
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| CN107300017A (en) | 2017-10-27 |
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