CN206582339U - A kind of individual layer valve plate positive pressure gas seals bypass valve - Google Patents
A kind of individual layer valve plate positive pressure gas seals bypass valve Download PDFInfo
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- CN206582339U CN206582339U CN201621495910.2U CN201621495910U CN206582339U CN 206582339 U CN206582339 U CN 206582339U CN 201621495910 U CN201621495910 U CN 201621495910U CN 206582339 U CN206582339 U CN 206582339U
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Abstract
A kind of individual layer valve plate positive pressure gas seals bypass valve, the bypass valve includes a valve plate, for lifting the electric pushrod of power and the high pressure positive blower of an auxiliary seal, and guiding mechanism, spring buffer mechanism, valve plate is set in dust-laden air channel and bypass air channel, described valve plate is single layer structure, annular sidewall with valve plate bottom plate and vertical protrusion, valve port has valve port bottom plate and the annular valve port of vertical protrusion, valve plate is in contact with corresponding valve port, form the valve chamber of a relative closure, described high pressure positive blower is connected with the valve chamber of valve plate and valve port formation, it has simple in construction, it is compact, zero leakage, stable and reliable operation, simple and convenient operation and maintenance, the advantages of strong applicability.
Description
Technical field
The utility model belongs to bag type dust removing technology field, more particularly to a kind of bypass installed in bag-type dust removing system
Valve.
Background technology
Bypass protection is exactly to set bypass valve on the import and export flue of sack cleaner, can be held when cigarette temperature exceedes filter bag
During the temperature range received, or filter bag pressure difference is more than setting value and drop is not when getting off, and bypass valve is automatically opened up, sack cleaner
Exits and entrances valve close, flue gas is directly over air-introduced machine and is discharged to chimney.Therefore bypass valve tightness be it is very important, because
As long as if a little being revealed for bypass valve, it is not necessary to how long, the sealing surface of bypass valve can serious blow loss, leakage is obvious
Increase, discharge it is exceeded, air-introduced machine heavy wear and damage.The bypass valve sealing such as current existing bivalve combination, elastic construction
Effect is all less desirable, and bypass valve will reach that long-term tight do not leak is highly difficult in the flue gas that temperature is changed.It is existing
Existing a kind of bypass valve in technology (CN201216909Y), as shown in Fig. 1,2, is designed as inside and outside two layers of valve on valve mechanism
Mouthful, formed in the middle of two layers of valve port in seal valve chamber, valve chamber and inject the hot-air of high pressure positive blower feeding, isolation bypass air channel is with containing
What dirt air channel was realized.Even if outer valve port has small gas leakage, because the gas passed through in its gap is clean gas, sealing
Face will not also fail because of abrasion.But its valve mechanism is complicated, not only valve plate uses double-decker, and valve port have it is inside and outside
Two layers of valve port, so causes the complex process in processing and fabricating, and practical function is poor.
Therefore, the utility model is directed to the shortcoming of above technology, by meticulous development, develop it is a kind of it is simple in construction,
The new bypass valve of sealed reliable.
Utility model content
The purpose of this utility model is to provide a kind of individual layer valve plate positive pressure gas envelope bypass valve, is that one kind is arranged at dust-laden flue
The valve opened under the state of emergency of top, its is simple in construction, compact, safe and reliable, in valve-closed state zero leakage, tight
Anxious state is opened flexible.
To achieve the above object, the utility model takes following design：
A kind of individual layer valve plate positive pressure gas seals bypass valve, and the bypass valve includes a valve plate, for lifting the electric pushrod of power
With the high pressure positive blower of an auxiliary seal, and guiding mechanism, spring buffer mechanism, it is characterised in that：
Valve plate is set in dust-laden air channel and bypass air channel, described valve plate is single layer structure, with valve plate bottom plate and hangs down
Straight raised annular sidewall, valve port has valve port bottom plate and the annular valve port of vertical protrusion, and the diameter of annular valve port is more than annular
The diameter of side wall, annular valve port is identical with the height of annular sidewall；Valve plate is in contact with corresponding valve port, in annular valve port and
The valve chamber of a relative closure is formed between annular sidewall, described guiding mechanism and spring buffer mechanism is socketed on valve rod,
Described electric pushrod is connected by valve rod with valve plate, and described electric pushrod passes through electric pushrod support and bypass flue housing
It is connected.Described high pressure positive blower is connected with the valve chamber of valve plate and valve port formation.
Described valve plate is circular configuration, connects hinge head by ball and is connected with valve rod, bulb gland connects the closed phase of hinge head with ball
Connect.
Sealed between described valve plate bottom plate and annular valve port by sealing structure, the sealing structure is to be used in annular valve port
The structure that " O " type silicone rubber O-ring and teflin ring formation soft and hard seal are combined, annular sidewall is rigid seal
Structure.
Described guiding mechanism is to be socketed on valve rod, guide sleeve by oiliness bearing respectively by guide sleeve seat symmetrical above and below
Cylinder is with guide sleeve seat by screw engagement, and guide sleeve seat top is sealed by sealing ring and door.
Described spring buffer mechanism includes the upper and lower spring being fixed on stud and upper and lower platen, described stud with
Platen is fixedly connected.
The utility model has the advantages that：With simple in construction, compact, zero leakage.Stable and reliable operation, Operation and Maintenance letter
Just, the advantages of strong applicability.
Brief description of the drawings
Fig. 1 is the system schematic of existing double-deck bypass valve.
Fig. 2 is existing sealed structural representation.
Fig. 3 is the system schematic of the application individual layer bypass valve.
Fig. 4 is the application sealed structural representation.
Fig. 5 is valve plate connection diagram.
Fig. 6 is guiding mechanism schematic diagram.
Fig. 7 is spring buffer structural scheme of mechanism.
1. dust-laden flue in figure, 2. valve ports, 3. valve plates, 4. valve rods, 5. guiding mechanisms, 6. spring buffer mechanisms, 7. is electronic
Pusher bar support, 8. travel switches, 9. electric pushrods, 10. centrifugal high pressure fans, 11. ajutages, 12. bypass air channels, 13. bypasses
Air channel housing, the hard sealing ring of 14. polytetrafluoroethylene (PTFE), 15. silicon rubber soft seal circles, 16a valve plate bottom plates, 16b annular sidewalls, 17b
Valve port bottom plate, 17a annular valve ports, 18 valve chambers, 19 flexural pivots, 20 bulb glands, 22. doors, 23. sealing rings, 24. oil-containings
Bearing, 25 guide sleeve seats, 26 pilot sleeves, 29 springs, 30 studs, 31 platens
Embodiment
Hereinafter with reference to accompanying drawing, case study on implementation of the present utility model is described in detail.The implementation case is with this
It is lower premised on technical method to be implemented, it should be understood that case study on implementation be in order to illustrate the utility model, it is but of the present utility model
Protection domain is not limited only to following case study on implementation.
Referring to shown in Fig. 3-Fig. 7：A kind of malleation sealing gland bypass valve, the bypass valve includes a valve plate 3, for lifting power
The centrifugal high pressure fan 10 of the auxiliary seal of electric pushrod 9 and one, and guiding mechanism 5, spring buffer mechanism 6, in dust-laden air channel
1 and bypass air channel 12 in valve plate 3 is set, described valve plate 3 is single layer structure, with vertical protrusion on valve plate bottom plate 16a
Annular sidewall 16b；Valve port 2 has valve port bottom plate 17a and the thereon annular valve port 17b of vertical protrusion, annular valve port 17b diameter
More than annular sidewall 16b diameter, annular valve port 17b is identical with annular sidewall 16b height.When the gland of valve plate 3 is on valve port 2
When, annular valve port 17a contact valve plates bottom plate 16a, annular sidewall 16b contact valve port bottom plate 17b, just in annular valve port 17a and ring
The hot-air that injection centrifugal high pressure fan 10 is sent into the valve chamber 18 of a relative closure, valve chamber 18 is formed between the wall 16b of shape side,
Its air pressure closed in valve chamber 18 is far above the pressure difference that dust-laden air channel 1 and bypass air channel 12 are produced, so as to prevent in dust-laden air channel 1
Dusty gas to bypass air channel 12 in flow, reach zero leakage.Due to the mutual cooperation of the vertical protrusion on valve port and valve plate
Effect, using the valve port and valve plate of simple and mechanical structure, when two are being mutually closed, just can form the valve chamber of closing.
Described guiding mechanism 5 and spring buffer mechanism 10 is socketed on valve rod 4, and described electric pushrod 9 passes through valve rod 4
It is connected with valve plate 3, described electric pushrod 9 is connected by electric pushrod support 7 with bypass flue housing 13.Described high pressure
Centrifugal blower 10 is connected with valve chamber 18.Described valve plate 3 is circular configuration, connects hinge head 19 by ball and is connected with valve rod 4, bulb
Gland 20 connects that hinge head 19 is closed to connect with ball.
Sealed between described valve plate 3 and valve port 2 by sealing structure, the sealing structure is to use " O " in annular valve port 17a
The structure that type silicone rubber O-ring 15 and the formation soft and hard seal of teflin ring 14 are combined, annular sidewall 16b is rigidity
Sealing structure, such structure allows blower fan to be leaked out to the side of dust-laden flue 1.
Described guiding mechanism 5 is to be socketed on valve rod by oiliness bearing 24 respectively by guide sleeve seat 25 symmetrical above and below
4, pilot sleeve 26 is with guide sleeve seat 25 by screw engagement, and guide sleeve seat top is carried out close by sealing ring 23 and door 22
Envelope.
Described spring buffer mechanism 6 includes the upper and lower spring 29 and upper and lower platen 30 being fixed on stud 31, described
Stud 31 be fixedly connected with platen 30.
As shown in figure 3, operation principle of the present utility model is：The centrifugal high pressure fan 10 when steam generator system normal operation
In opening, the clean hot air sucked from bypass air channel 12 is sent into valve chamber 18 by centrifugal high pressure fan 10, valve chamber
Zone of positive pressure is formed in 18, its internal static pressure is much larger than the pressure difference for bypassing air channel and dust-laden air channel 1, so as to reach sealed work
With.When the temperature of ash-laden gas exceedes the temperature range that filter bag can bear, or filter bag pressure difference is more than setting value and dropped not
When getting off, bypass valve is automatically opened up, and the exits and entrances valve of sack cleaner is closed, and flue gas is directly over air-introduced machine and is discharged to cigarette
Chimney, protects the filter bag of sack cleaner.
The unlatching of valve and the control of the extreme position of closure are determined by limit switch.
Closing forces are excessive during to avoid valve plate 3 from closing, and the damage of electric pushrod 9 caused, with spring mechanism 6 in spring 29
The displacement produced when being compressed carrys out the delayed defect of cushion stroke switch 8.
Finally it should be noted that：Explanation of the present utility model is the foregoing is only, the utility model is not limited to, to the greatest extent
The utility model is described in detail pipe, for those skilled in the art, and it can still be remembered to foregoing
The technical scheme of load is modified, or carries out equivalent substitution to which part technical characteristic.It is all in spirit of the present utility model
Within principle, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.
Claims (5)
1. a kind of individual layer valve plate positive pressure gas seals bypass valve, the bypass valve includes a valve plate, for lifted power electric pushrod and
The high pressure positive blower of one auxiliary seal, and guiding mechanism, spring buffer mechanism, it is characterised in that：
Valve plate is set in dust-laden air channel and bypass air channel, described valve plate is single layer structure, with valve plate bottom plate and vertical convex
The annular sidewall risen, valve port has valve port bottom plate and the annular valve port of vertical protrusion, and the diameter of annular valve port is more than annular sidewall
Diameter, annular valve port is identical with the height of annular sidewall；Valve plate is in contact with corresponding valve port, in annular valve port and annular
The valve chamber of a relative closure is formed between the wall of side, described guiding mechanism and spring buffer mechanism is socketed on valve rod, described
Electric pushrod be connected by valve rod with valve plate, described electric pushrod is connected by electric pushrod support with bypass flue housing
Connect；Described high pressure positive blower is connected with the valve chamber of valve plate and valve port formation.
2. a kind of individual layer valve plate positive pressure gas envelope bypass valve according to claim 1, it is characterised in that described valve plate is circle
Shape structure, connects hinge head by ball and is connected with valve rod, and bulb gland connects that hinge head is closed to connect with ball.
3. a kind of individual layer valve plate positive pressure gas envelope bypass valve according to claim 1, it is characterised in that described valve plate bottom plate
Sealed between annular valve port by sealing structure, the sealing structure is to use " O " type silicone rubber O-ring and poly- in annular valve port
It is rigid seal structure at the structure that tetrafluoroethene sealing ring formation soft and hard seal is combined, annular sidewall.
4. a kind of individual layer valve plate positive pressure gas envelope bypass valve according to claim 1, it is characterised in that described guiding mechanism
It is that valve rod is socketed on by oiliness bearing by guide sleeve seat symmetrical above and below respectively, pilot sleeve is connect with guide sleeve seat by screw
Close, guide sleeve seat top is sealed by sealing ring and door.
5. a kind of individual layer valve plate positive pressure gas envelope bypass valve according to claim 1, it is characterised in that described spring buffer
Mechanism includes the upper and lower spring being fixed on stud and upper and lower platen, and described stud is fixedly connected with platen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621495910.2U CN206582339U (en) | 2016-12-29 | 2016-12-29 | A kind of individual layer valve plate positive pressure gas seals bypass valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621495910.2U CN206582339U (en) | 2016-12-29 | 2016-12-29 | A kind of individual layer valve plate positive pressure gas seals bypass valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206582339U true CN206582339U (en) | 2017-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621495910.2U Active CN206582339U (en) | 2016-12-29 | 2016-12-29 | A kind of individual layer valve plate positive pressure gas seals bypass valve |
Country Status (1)
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| CN (1) | CN206582339U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420558A (en) * | 2016-12-29 | 2017-12-01 | 大唐环境产业集团股份有限公司 | A kind of individual layer valve plate positive pressure gas seals bypass valve |
-
2016
- 2016-12-29 CN CN201621495910.2U patent/CN206582339U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420558A (en) * | 2016-12-29 | 2017-12-01 | 大唐环境产业集团股份有限公司 | A kind of individual layer valve plate positive pressure gas seals bypass valve |
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