CN206889705U - A kind of double-layer seal by-passing valve with gas check - Google Patents
A kind of double-layer seal by-passing valve with gas check Download PDFInfo
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- CN206889705U CN206889705U CN201720551323.9U CN201720551323U CN206889705U CN 206889705 U CN206889705 U CN 206889705U CN 201720551323 U CN201720551323 U CN 201720551323U CN 206889705 U CN206889705 U CN 206889705U
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Abstract
It the utility model is related to a kind of double-layer seal by-passing valve with gas check,Valve body (3) is arranged in air channel top board (14) by valve base (13),Stuffing seal (4) is arranged on valve base (13) and upper air duct dividing plate (15),Valve plate one (6),Compression spring (7) and valve plate two (8) are arranged on connecting rod (2),Cylinder (1) is arranged on valve body (3),Connecting rod (2) is connected with cylinder (1),Connecting rod (2) is under the active force of cylinder (1),Valve plate one (6) is driven through stuffing seal (4),Compression spring (7) and valve plate two (8) move up and down,Hollow sealing ring (9),Inclined-plane sealing surface (11) and guider (12) are arranged on airduct (10),Form double-layer sealing structure,Airtight pipeline (5) communicates with airduct (10),Under valve-closed state,Compressed air enters Gas inlet tube (10) and valve plate one (6) by airtight pipeline (5),The confined space that valve plate two (8) is formed,Form malleation chamber,Reach airtight effect.The utility model can realize the zero leakage of air channel bypass channel, be the prerequisite that cleaner reaches ultra-clean discharge.
Description
Technical field
The utility model is related to a kind of double-layer seal by-passing valve equipment with gas check, belong to atmosphere pollution processing and
Environmental technology field.It is mainly used in industrial waste gas and administers ultra-clean emissions field, applies also for metallurgy, electric power, chemical industry, builds
Other fields such as material, food processing.
Background technology
At present, deduster off-line maintenance is similarly used for, bypasses that the valve species of setting is a lot, and these equipment there are scarce
Point, such as：It is poorly sealed, minimum discharge requirement can not be met；Complicated, space-consuming is big, causes investment high, operation maintenance work
Work amount is big；The easy dust stratification of sealing surface, aging, cause valve easily to leak, and service life is short etc..
Utility model content
The purpose of this utility model is to provide a kind of double-layer seal by-passing valve with gas check, it include cylinder, connecting rod,
Valve body, airtight pipeline, valve plate one, compression elastic element, valve plate two, hollow sealing ring, airduct and inclined-plane sealing surface；Wherein, valve
Body is arranged in air channel top board, and valve plate one, compression elastic element and valve plate two are arranged on connecting rod, and cylinder is arranged on valve body,
Connecting rod and cylinders, connecting rod drive valve plate one, compression elastic element and valve plate two to move up and down under the active force of cylinder,
Hollow sealing ring, inclined-plane sealing surface are arranged on airduct, and valve plate one can coordinate with hollow sealing ring, and valve plate two can seal with inclined-plane
Face coordinates, and to form double-layer sealing structure, airtight pipeline communicates with airduct, under the bypass valve closed mode, compressed air
Airduct and valve plate one, the confined space of the formation of valve plate two are entered by airtight pipeline, malleation chamber is formed, reaches airtight effect.
Wherein, the by-passing valve also includes guider, and guider is arranged on BOD, and connecting rod bottom, which passes through, to be oriented to
Device.
Wherein, the by-passing valve also includes stuffing seal, and connecting rod passes through stuffing seal, stuffing seal bag
Include the first stuffing seal and the second stuffing seal；First stuffing seal is arranged on the valve base of valve body lower portion
On, the second stuffing seal is arranged on the air-duct clapboard of top.
Wherein, described cylinder is executing agency, is double action strip magnet ring bounce cylinder, passes through valve, preferably two
Five-way valve door connects compressed air, controls moving up and down for cylinder push-rod, cylinder push-rod bottom connection connecting rod.
Wherein, described connecting rod is conduction mechanism, and the top of connecting rod is connected by axle sleeve with cylinder, the bottom installation of connecting rod
There are valve plate one, compression elastic element and valve plate two, the bottom of connecting rod passes through guider.
Wherein, described stuffing seal mainly includes stuffing box, Packing seat, oil immersion asbestos packing and gland；
Stuffing seal includes the first stuffing seal and the second stuffing seal；First stuffing seal is arranged on valve body
On the valve base of bottom, the second stuffing seal is arranged on the air-duct clapboard of top, for isolating space above and below air channel, even
Bar passes through stuffing box, and Packing seat, oil immersion asbestos packing and gland are sequentially loaded into stuffing box, with fastener, preferably spiral shell
Silk compresses gland, to reach connecting rod up and down and gastight effect in stuffing box.
Wherein, described valve plate two mainly includes valve plate, U-shaped sealing strip, pressure strip and clamping screw, and U-shaped sealing strip leads to
Cross pressure strip and clamping screw is fixed on the excircle of valve plate two, when the by-passing valve is closed, valve plate two and inclined-plane sealing surface
Contact compresses, and forms first layer sealing structure.
Wherein, described compression elastic element is installed between valve plate one and valve plate two, has initial pressure, for overcoming
The draught head of the both sides of valve plate two, while when the by-passing valve is closed, can provide and institute is sealed between valve plate two and inclined-plane sealing surface
The thrust needed.
Wherein, described hollow sealing ring is preferably fixed on airduct upper table by being fixed on airduct upper surface by clip
Face, when the by-passing valve is closed, valve plate one contacts with hollow sealing ring, and mutually extrudes, and sealing surface is formed, to form the second layer
Sealing structure；It is preferred that hollow sealing ring is thermoforming overall structure, silicone rubber material.
The utility model, which also provides, a kind of to be sealed using a kind of above-mentioned double-layer seal by-passing valve with gas check
Method, comprise the following steps：
1) cylinder activation source of the gas, connecting rod drive valve plate one, valve plate two to move down in the presence of cylinder；
2) during connecting rod moves down, valve plate two first contacts with inclined-plane sealing surface, and connecting rod continues in the presence of cylinder
Move down, compression elastic element is compressed, there is provided the thrust between valve plate two and inclined-plane sealing surface, form first layer sealing
Structure, connecting rod continue to move down in the presence of cylinder, and valve plate one and hollow sealing ring contact squeeze, hollow sealing ring become
Shape, form second layer sealing structure；
3) after the valve plate one, two is in place, airtight pipeline connects source of the gas, and past airduct forms close with valve plate one, valve plate two
Close and compressed air is passed through in space, form malleation chamber, reach airtight effect, now the by-passing valve completes shutoff operation；
4) when needing to open by-passing valve, the source of the gas of airtight pipeline is closed, operation cylinder drivening rod moves upwards, valve plate
First, valve plate two separates with hollow sealing ring, inclined-plane sealing surface respectively, air cylinder lifting to top, and by-passing valve completes opening operation.
Wherein, the by-passing valve includes cylinder, valve body, connecting rod, stuffing seal, airtight pipeline, valve plate one, valve plate
2nd, compression elastic element, hollow sealing ring, airduct, inclined-plane sealing surface and guider；Wherein, cylinder is on valve body, connecting rod
With cylinders, stuffing seal, valve plate one, valve plate two, compression elastic element are on connecting rod, hollow sealing ring, inclined-plane
Sealing surface and guider are mounted in airduct, and airtight pipeline is connected with airduct, cylinder moving, above and below drivening rod and valve plate above
Motion, valve plate contact with the sealing surface on airduct, to reach the purpose of switch airduct.
Wherein, described cylinder is band magnet ring double acting bounce cylinder, cylinder with being magnetic display switch, cylinder bore and
Stroke is according to valve plate weight, use environment, the draught head of valve plate both sides and bleed pressure come type selecting.
Wherein, described stuffing seal mainly includes stuffing box, Packing seat, oil immersion asbestos disk and gland.Fill out
Material sealing device is used to pass through stuffing box with exterior space, connecting rod inside isolation valve body, Packing seat, oil are sequentially loaded into stuffing box
Soak asbestos packing and gland, gland compressed with screw, with reach connecting rod in stuffing box it is up and down and air tight
Effect.
Wherein, described connecting rod, top and cylinders, middle part are equipped with packing seal through the place of equipment installation surface
Device, bottom are equipped with valve plate one, compression elastic element and valve plate two, and bottom passes through guider.Connecting rod by the effect of cylinder,
Valve plate is driven to move up and down.
Wherein, airtight pipeline, bottom and airduct UNICOM, upper interface connect compressed air, and compressed air is adjusted by pressure-reducing valve
Pressure is saved, in the state of valve closing, a confined space is formed between valve plate one, valve plate two and airduct three, passes through gas
Close pipeline makes the pressure in this space be more than valve plate one and the environment in the outside of valve plate two toward compressed air is passed through in this confined space
Pressure, to reach airtight effect.
Wherein, valve plate two, make a circle in week equipped with sealing ring, when connecting rod reduces, the rubber of valve plate two and inclined-plane sealing surface
Pad contact, by cylinder action power, sealing surface mutually extrudes, and reaches closed effect.
Wherein, hollow sealing ring, it is thermoforming overall structure, silicone rubber material, high temperature resistant is ageing-resistant, is deformed after compression
Amount is big, increases contact area, improves sealing effectiveness, and when connecting rod reduces, valve plate one compresses hollow sealing ring, is formed double-deck close
Envelope.
Wherein, compression elastic element, there is initial pressure, the draught head of the both sides of valve plate two can be overcome, closed in valve
Under state, compression elastic element, which can provide, seals required thrust between valve plate two and inclined-plane sealing surface, reach sealing effectiveness.
Wherein, inclined-plane sealing surface, it is 45 degree of inclined-planes, rubber slab, valve plate two and contact of incline plane composition inclined-plane is posted on inclined-plane
Sealing, simultaneously because this surface be inclined-plane, when valve opening passes through dusty gas, this surface can automatically cleaning, not heap dust stratification
Dirt.
Wherein, guider is made up of guide ring and fixing device, when connecting rod moves up and down under cylinder action, through leading
Xiang Huan, during valve installation and valve motion, guider limiting rod moves radially, and ensures the centering effect of valve
Fruit and the effect of sealing surface perpendicular contact sealing.
Had the beneficial effect that used by the utility model caused by technical scheme：
1. using stuffing seal, connecting rod is set not collaborate mutually when being moved up and down by dividing plate, ensure that equipment
Sealing effectiveness.
2. using airtight pipeline, valve is set to form positive seal casing, it is ensured that the isolation effect of valve.
3. using the double-layer sealing structure with compression elastic element, double-deck valve plate is automatically adjusted by compression elastic element
Thrust, realize the effect of double-layer seal.
4. using inclined-plane sealing surface, area in sealing contact is increased, while automatically cleaning can be realized, solves flat seal
Face dust accretions influence the shortcomings that sealing.
5. using hollow sealing ring, the decrement of sealing ring is increased, increases area in sealing contact, improves sealing effect
Fruit.
6. using guider, ensure the vertical up-or-down movement of connecting rod, it is perpendicular contact valve plate is contacted with sealing surface, is made
Thrust on sealing surface circumference is balanced.
Brief description of the drawings
Fig. 1 is the double-layer seal by-passing valve opening location drawing with gas check.
Fig. 2 is that the double-layer seal with gas check bypasses the valve closed mode location drawing.
Fig. 3 is stuffing seal schematic diagram.
Fig. 4 is the enlarged diagram of Fig. 1 I parts.
Reference numeral explanation
2. connecting rod of wherein 1. cylinder, 3. valve body, 4. stuffing seal, the 5. airtight valve plate 1 of pipeline 6. compression bullet
Property element, the preferably guider of 8. valve plate of compression spring, 2 9. hollow sealing ring, 10. airduct, 11. inclined-plane sealing surface 12.
13. the fastener of 17. airflow direction of valve base 14. air channel top board, 15. top air-duct clapboard, 16. bottom air-duct clapboard 18.
19. the pressure strip 25.U types of 23. clamping screw of gland 20. oil immersion asbestos packing, 21. stuffing box, 22. Packing seat 24.
Sealing strip.
Embodiment
As Figure 1-4, a kind of double-layer seal by-passing valve with gas check, it includes cylinder 1, connecting rod 2, valve body 3, gas
Close pipeline 5, valve plate 1, compression elastic element 7, preferably compression spring, valve plate 28, hollow sealing ring 9, airduct 10 and inclined-plane
Sealing surface 11；Wherein, valve body 3 is arranged in air channel top board 14 by valve base 14, valve plate 1, compression elastic element 7 and valve
Plate 28 is arranged on connecting rod 2, and cylinder 1 is arranged on valve body 3, and connecting rod 2 is connected with cylinder 1, active force of the connecting rod 2 in cylinder 1
Under, drive valve plate 1, compression elastic element 7 and valve plate 28 to move up and down, hollow sealing ring 9, inclined-plane sealing surface 11 are arranged on
On airduct 10, valve plate 1 can coordinate with hollow sealing ring 9, and valve plate 28 can coordinate with inclined-plane sealing surface 11, double-deck close to form
Seal structure, airtight pipeline 5 are communicated with airduct 10, and under the bypass valve closed mode, compressed air is entered by airtight pipeline 5
The confined space that airduct 10 is formed with valve plate 1, valve plate 28, forms malleation chamber, reaches airtight effect.Wherein connecting rod 2 is from upper
Air channel top board 14, top air-duct clapboard 15 and bottom air-duct clapboard 16 are sequentially passed through under and.Second stuffing seal 4 is installed
On top air-duct clapboard 15, airduct 10 is arranged on bottom air-duct clapboard 16.
Wherein, the by-passing valve also includes guider 12, and guider 12 is arranged on the bottom of airduct 10, the bottom of connecting rod 2
Through guider 12.Wherein, the by-passing valve also includes stuffing seal 4, and connecting rod 2 passes through stuffing seal 4, filler
Sealing device 4 includes the first stuffing seal and the second stuffing seal；First stuffing seal is arranged under valve body 3
On the valve base 13 in portion, the second stuffing seal is arranged on top air-duct clapboard 15.Wherein, described cylinder 1 is to hold
Row mechanism, it is double action strip magnet ring bounce cylinder, by valve, preferably two-position five-way valve connection compressed air, controls gas
The push rod of cylinder 1 moves up and down, the push rod bottom of cylinder 1 connection connecting rod 2
Wherein, described connecting rod 2 is conduction mechanism, and the top of connecting rod 2 is connected by axle sleeve with cylinder 1, the bottom of connecting rod 2
Valve plate 1, compression elastic element 7 and valve plate 28 are installed, the bottom of connecting rod 2 passes through guider 12.
Wherein, described stuffing seal 4 mainly includes stuffing box 21, Packing seat 22, oil immersion asbestos packing 20 and filled out
Expect gland 19；Stuffing seal 4 includes the first stuffing seal 4 and the second stuffing seal 4；First packing seal fills
Put on the valve base 13 installed in the bottom of valve body 3, the second stuffing seal is arranged on top air-duct clapboard 15, for every
From space above and below air channel, connecting rod 2 passes through stuffing box 21, be sequentially loaded into stuffing box 21 Packing seat 22, oil immersion asbestos packing 20 and
Gland 19, with fastener 18, preferably screw compresses gland 19, is lived up and down in stuffing box 21 with reaching connecting rod 2
Dynamic and gastight effect.
Wherein, described valve plate 28 mainly includes valve plate, U-shaped sealing strip 25, pressure strip 24 and clamping screw 23, U-shaped close
Strip of paper used for sealing 25 is fixed on the excircle of valve plate two by pressure strip 24 and clamping screw 23, when the by-passing valve is closed, valve plate 28
Compression is contacted with inclined-plane sealing surface 11, forms first layer sealing structure.
Wherein, described compression elastic element 7 is installed between valve plate 1 and valve plate 28, is had initial pressure, is used for
Overcome the draught head of the both sides of valve plate 28, while when the by-passing valve is closed, can provide valve plate 28 and inclined-plane sealing surface 11 it
Between seal required thrust.
Wherein, described hollow sealing ring 9 is preferably fixed on airduct 10 by being fixed on the upper surface of airduct 10 by clip
Upper surface, when the by-passing valve is closed, valve plate 1 contacts with hollow sealing ring 9, and mutually extrudes, and forms sealing surface, to be formed
Second layer sealing structure；It is preferred that hollow sealing ring 9 is thermoforming overall structure, silicone rubber material.
The utility model, which also provides, a kind of to be sealed using a kind of above-mentioned double-layer seal by-passing valve with gas check
Method, comprise the following steps：
1) cylinder 1 connects source of the gas, and connecting rod 2 drives valve plate 1, valve plate 28 to move down in the presence of cylinder 1；
2) during connecting rod 2 moves down, valve plate 28 first contacts with inclined-plane sealing surface 11, effect of the connecting rod 2 in cylinder 1
Under continue to move down, compression elastic element 7 is compressed, there is provided the thrust between valve plate 28 and inclined-plane sealing surface 11, formed
First layer sealing structure, connecting rod 2 continue to move down in the presence of cylinder 1, valve plate 1 and the contact squeeze of hollow sealing ring 9,
Hollow sealing ring 9 deforms, and forms second layer sealing structure；
3) after the valve plate one, two is in place, airtight pipeline 5 connects source of the gas, toward airduct 10 and valve plate 1, the formation of valve plate 28
Confined space in be passed through compressed air, form malleation chamber, reach airtight effect, now the by-passing valve is completed to close behaviour
Make；
4) when needing to open by-passing valve, the source of the gas of airtight pipeline 5 is closed, the operation drivening rod 2 of cylinder 1 moves upwards, valve
Plate 1, valve plate 28 are separated with hollow sealing ring 9, inclined-plane sealing surface 11 respectively, and top is arrived in the lifting of cylinder 1, and by-passing valve is completed to beat
Open operation.
A kind of specific work process of the double-layer seal by-passing valve with gas check：Close valve.Cylinder activation source of the gas, even
Bar drives valve plate one, valve plate two to move down in the presence of cylinder；During connecting rod moves down, valve plate two is prior to inclined-plane
Sealing surface contacts, and connecting rod continues to move down in the presence of cylinder, and compression elastic element is compressed, there is provided valve plate two and inclined-plane
Thrust between sealing surface, the first layer sealing surface is formed, connecting rod continues to move down in the presence of cylinder, valve plate one and sky
Heart sealing ring contact squeeze, hollow sealing ring deformation, forms the second layer sealing surface；After valve plate is in place, airtight pipeline connects source of the gas,
Compressed air is passed through in the confined space formed toward airduct and valve plate one, valve plate two, malleation chamber is formed, reaches airtight effect,
Now valve completes shutoff operation；Open valve.The source of the gas of airtight pipeline is closed, operation cylinder drivening rod moves upwards, valve
Plate one, valve plate two separate with hollow sealing ring, inclined-plane sealing surface respectively, air cylinder lifting to top, and valve completes opening operation.
Claims (10)
1. a kind of double-layer seal by-passing valve with gas check, it is characterized in that：The double-layer seal by-passing valve with gas check
Including cylinder (1), connecting rod (2), valve body (3), airtight pipeline (5), valve plate one (6), compression spring (7), valve plate two (8), hollow
Sealing ring (9), airduct (10) and inclined-plane sealing surface (11)；Wherein, valve body (3) is arranged in air channel top board (14), valve plate one
(6), compression spring (7) and valve plate two (8) are arranged on connecting rod (2), and cylinder (1) is arranged on valve body (3), connecting rod (2) and gas
Cylinder (1) is connected, and connecting rod (2) drives valve plate one (6), compression spring (7) and valve plate two (8) up and down under the active force of cylinder (1)
Mobile, hollow sealing ring (9), inclined-plane sealing surface (11) are arranged on airduct (10), and valve plate one (6) can be with hollow sealing ring (9)
Coordinate, valve plate two (8) can coordinate with inclined-plane sealing surface (11), to form double-layer sealing structure, airtight pipeline (5) and airduct (10)
Communicate, under the bypass valve closed mode, compressed air enters Gas inlet tube (10) and valve plate one (6), valve by airtight pipeline (5)
The confined space that plate two (8) is formed, malleation chamber is formed, reaches airtight effect.
2. a kind of double-layer seal by-passing valve with gas check according to claim 1, it is characterized in that：The by-passing valve is also
Including guider (12), guider (12) is arranged on airduct (10) bottom, and connecting rod (2) bottom passes through guider (12).
3. a kind of double-layer seal by-passing valve with gas check according to claim 1 or 2, it is characterized in that：The bypass
Valve also includes stuffing seal (4), and connecting rod (2) passes through stuffing seal (4), and stuffing seal (4) is filled out including first
Expect sealing device and the second stuffing seal；First stuffing seal is arranged on the valve base (13) of valve body (3) bottom
On, the second stuffing seal is arranged on top air-duct clapboard (15).
4. a kind of double-layer seal by-passing valve with gas check according to claim 1 or 2, it is characterized in that：Described gas
Cylinder (1) is executing agency, is double action strip magnet ring bounce cylinder, and compressed air is connected by valve, control cylinder (1) push rod
Move up and down, cylinder (1) push rod bottom connection connecting rod (2).
5. a kind of double-layer seal by-passing valve with gas check according to claim 2, it is characterized in that：Described connecting rod
(2) it is conduction mechanism, the top of connecting rod (2) is connected by axle sleeve with cylinder (1), and the bottom of connecting rod (2) is provided with valve plate one
(6), compression spring (7) and valve plate two (8), the bottom of connecting rod (2) pass through guider (12).
6. a kind of double-layer seal by-passing valve with gas check according to claim 3, it is characterized in that：Described filler is close
Seal apparatus (4) mainly includes stuffing box (21), Packing seat (22), oil immersion asbestos packing (20) and gland (19)；Filler is close
Seal apparatus (4) includes the first stuffing seal and the second stuffing seal；First stuffing seal is arranged on valve body (3)
On the valve base (13) of bottom, the second stuffing seal is arranged on top air-duct clapboard (15), for isolating air channel
Lower space, connecting rod (2) pass through stuffing box (21), Packing seat (22), oil immersion asbestos packing (20) are sequentially loaded into stuffing box (21)
And gland (19), gland (19) is compressed with fastener (18), is lived up and down in stuffing box (21) with reaching connecting rod (2)
Dynamic and gastight effect.
7. a kind of double-layer seal by-passing valve with gas check according to claim 1 or 2, it is characterized in that：Described valve
Plate two (8) mainly includes valve plate, U-shaped sealing strip (25), pressure strip (24) and clamping screw (23), and U-shaped sealing strip (25) passes through
Pressure strip (24) and clamping screw (23) are fixed on the excircle of valve plate two, when the by-passing valve is closed, valve plate two (8) with tiltedly
Face sealing surface (11) contact compresses, and forms first layer sealing structure.
8. a kind of double-layer seal by-passing valve with gas check according to claim 1 or 2, it is characterized in that：Described pressure
Contracting spring (7) is installed between valve plate one (6) and valve plate two (8), has initial pressure, for overcoming valve plate two (8) both sides
Draught head, while when the by-passing valve is closed, can provide and seal required pressure between valve plate two (8) and inclined-plane sealing surface (11)
Clamp force.
9. a kind of double-layer seal by-passing valve with gas check according to claim 1 or 2, it is characterized in that：Described sky
Heart sealing ring (9) is fixed on airduct (10) upper surface, and when the by-passing valve is closed, valve plate one (6) connects with hollow sealing ring (9)
Touch, and mutually extrude, sealing surface is formed, to form second layer sealing structure.
10. a kind of double-layer seal by-passing valve with gas check according to claim 9, it is characterized in that：Described is hollow
Sealing ring (9) is fixed on airduct (10) upper surface by clip, and hollow sealing ring (9) is thermoforming overall structure, silicon rubber material
Matter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720551323.9U CN206889705U (en) | 2017-05-17 | 2017-05-17 | A kind of double-layer seal by-passing valve with gas check |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720551323.9U CN206889705U (en) | 2017-05-17 | 2017-05-17 | A kind of double-layer seal by-passing valve with gas check |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206889705U true CN206889705U (en) | 2018-01-16 |
Family
ID=61342092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720551323.9U Active CN206889705U (en) | 2017-05-17 | 2017-05-17 | A kind of double-layer seal by-passing valve with gas check |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206889705U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084251A (en) * | 2017-05-17 | 2017-08-22 | 中冶节能环保有限责任公司 | A kind of double-layer seal by-passing valve with gas check |
| CN110864156A (en) * | 2019-11-29 | 2020-03-06 | 王荥 | Flue gas switching valve |
-
2017
- 2017-05-17 CN CN201720551323.9U patent/CN206889705U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084251A (en) * | 2017-05-17 | 2017-08-22 | 中冶节能环保有限责任公司 | A kind of double-layer seal by-passing valve with gas check |
| CN110864156A (en) * | 2019-11-29 | 2020-03-06 | 王荥 | Flue gas switching valve |
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Effective date of registration: 20201130 Address after: 100088 Beijing city Haidian District Xitucheng Road No. 33 Patentee after: MCC ENERGY SAVING ENVIRONMENTAL PROTECTION Co.,Ltd. Patentee after: CENTRAL RESEARCH INSTITUTE OF BUILDING AND CONSTRUCTION CO., LTD. MCC Group Patentee after: Zhanjiang MCC Environmental Protection Operation Management Co.,Ltd. Address before: 100088 Beijing city Haidian District Xitucheng Road No. 33 Patentee before: MCC ENERGY SAVING ENVIRONMENTAL PROTECTION Co.,Ltd. Patentee before: CENTRAL RESEARCH INSTITUTE OF BUILDING AND CONSTRUCTION CO., LTD. MCC Group |