CN2074847U - Double-sealing knife shape plate valve - Google Patents
Double-sealing knife shape plate valve Download PDFInfo
- Publication number
- CN2074847U CN2074847U CN 90222110 CN90222110U CN2074847U CN 2074847 U CN2074847 U CN 2074847U CN 90222110 CN90222110 CN 90222110 CN 90222110 U CN90222110 U CN 90222110U CN 2074847 U CN2074847 U CN 2074847U
- Authority
- CN
- China
- Prior art keywords
- knife
- valve body
- sealing
- flashboard
- edge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Abstract
The utility model relates to a double sealing knife-shaped gate plate valve. The utility model is used for the large diameter pipeline to separate and deliver the gas and solid and the liquid and the solid mixing material, in particular to the air and coal powder mixing material. The utility model is composed of a valve body, a knife-shaped gate plate, a fixing valve seat, two knife-shaped gate plate guide blocks which are fixed on the valve body, a sealing packing for sealing the inserting opening of the gate valve and a packing gland. The pressing of the knife-shaped gate plate and the fixing valve seat forms the first sealing of the valve. The high pressure gas and liquid form the second sealing on the high pressure area formed on the fixing valve seat and the knife-shaped gate plate. The utility model has the advantages of simple structure, good sealing performance, small abrasion of the gate plate and the fixing valve seat, and long service life.
Description
The utility model relates to a kind of large diameter pipeline and carries the gate valve of the partition usefulness of gas-solid/liquid-solid mixture material, particularly a kind of large diameter pipeline to carry the double-sealing knife-edge gate valve of the partition usefulness of air coal dust intermixture material.
Existing gate valve is when being used for the partition of large diameter pipeline conveying gas-solid/liquid-solid mixture material, usually can not cut off fully because of the solid powder that is deposited on valve seat and flashboard sealing part, all adopt two conveyance conduits to connect bellows respectively in the thermal power plant for this reason, first and second machine supplying powders, boiler gives combustion chamber start-up burner and master burner, in bellows and first, two pure giving on the airduct road between two machine supplying powders of second are adorned air door respectively, give combustion chamber start-up burner to boiler during with the control ignition of the boiler, carry air coal dust intermixture material for during normal operation of boiler the boiler master burner, can in the ignition of the boiler time, stop the work of master burner machine supplying powder though do like this, stop up master burner feed pipeline to prevent that master burner feed pipeline powder coal from piling up; Normal operation of boiler stops to give combustion chamber start-up burner machine supplying powder work, piles up to stop up and give combustion chamber start-up burner feed pipeline to prevent to give combustion chamber start-up burner feed pipeline powder coal in the time, but need to lay two feed pipelines with two machine supplying powders with between bellows, machine supplying powder and boiler, the equipment input is many.
The purpose of this utility model is to overcome the deficiency of prior art, provides a kind of reliable sealing large diameter pipeline to carry gas-solid/liquid-solid mixture material, particularly carry the double-sealing knife-edge gate valve of the partition usefulness of air coal dust intermixture material.
The purpose of this utility model can realize by following technological scheme: a kind of large diameter pipeline is carried gas-solid/liquid-solid mixture material, is particularly carried the double-sealing knife-edge gate valve of the partition usefulness of air coal dust intermixture material, it by valve body, knife-edge flashboard, fixed valve base, be installed on two knife-edge flashboard guide pads on the valve body and be used for sealed packing, packing differential that sealing damper inserts mouthful and constitute, valve body is provided with before a flashboard insertion groove, the valve body inboard of pipe and is provided with and has an inlet opening on the pipe before a circular groove, the valve body and drop in the circular groove; With the circumferential surface of the fixed valve base of flashboard sealing on be evenly distributed with the fluid passage that communicates with its side; Constitute an annular fluid cavity with the fixing assembling of valve body back in fixed valve base is managed before valve body, this cavity communicates with fluid passage on the fixed valve base, the sectional area summation of its sectional area 〉=fluid passage; Two guide pad left and right symmetricallies are installed on the flashboard insertion groove bottom rear wall of valve body, and the knife-edge flashboard is inserted in the flashboard insertion groove that is provided with on the valve body.
Large diameter pipeline provided by the utility model carry gas-solid/liquid-solid mixture material, particularly carry air coal dust intermixture material partition usefulness double-sealing knife-edge gate valve in use, add enough the gas of big pressure (during conveying liquid-solid mixture material by the inlet opening that has on the valve body preceding pipeline, add the enough liquid of big pressure), this gas is in annular fluid cavity → fluid passage → valve body.When flashboard is mentioned, promptly during valve open, because the effect of this air-flow, the solid powder in the mixed material of line transportation can not be deposited in the flashboard slot, thereby flashboard can fall fully when guaranteeing valve closing.
The working mechanism of double-sealing knife-edge gate valve provided by the utility model is: when throttle down, valve knife-edge flashboard are reduced to the valve body bottom, because the effect that knife-edge inclined-plane, knife-edge flashboard forward position and guide pad are supported, when the knife-edge flashboard moves downward to the fixed valve base side shifting, knife-edge flashboard and fixed valve base are compressed seal the mixed material that cuts off in the conveyance conduit, finish first road sealing of double-sealing knife-edge gate valve; Pressurized gas → annular fluid cavity → fluid passage to the fixed valve base and knife-edge flashboard sealing part that adds by the inlet opening forms the zone of high pressure, finishes second road sealing of double-sealing knife-edge gate valve.When opening valve, when valve knife-edge flashboard is mentioned,, breaking away from fixed valve base when the knife-edge flashboard moves upward owing to knife-edge inclined-plane, knife-edge flashboard forward position and guide pad support, be used for the effect that sealed packing that sealing damper inserts mouthful is supported.
This large diameter pipeline provided by the utility model is carried gas-solid/liquid-solid mixture material, is particularly carried the double-sealing knife-edge gate valve of the partition usefulness of air coal dust intermixture material, simple in structure, good seal performance, the wearing and tearing of flashboard and fixed valve base are little, long service life.Use this double-sealing knife-edge gate valve, can give the charging line of combustion chamber start-up burner and master burner with pipeline connection bellows, machine supplying powder, a boiler in the thermal power plant, give at boiler on the charging line of combustion chamber start-up burner and master burner and adorn a double-sealing knife-edge gate valve respectively, to finish the switching of charging line, so only need a machine supplying powder and lay a feed pipeline, can drop into by minimizing equipment.
The drawing of accompanying drawing is described as follows:
Fig. 1 is the plan view of double-sealing knife-edge gate valve.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is that Lower Half is the knife-edge flashboard schematic representation of semicircle periphery knife-edge structure, a, plan view, b, B-B sectional view.
Below in conjunction with drawings and Examples the utility model is described in further detail:
With reference to accompanying drawing, the large diameter pipeline that the utility model embodiment is provided is carried gas-solid/liquid-solid mixture material, particularly carry the double-sealing knife-edge gate valve of the partition usefulness of air coal dust intermixture material, it is by valve body 1, knife-edge flashboard 2, steel fixed valve base 3, be installed on two knife-edge flashboard guide pads 6 on the valve body 1 and be used for the asbestos seal packing 8 that sealing damper inserts mouth by welding, the packing differential of fixing with bolt and valve body 19 constitutes, and valve body 1 is provided with a flashboard insertion groove, the inboard of pipe is provided with a circular groove before the valve body, having an inlet opening 7 on the pipe before the valve body 1 drops in the circular groove; With the circumferential surface of the fixed valve base 3 of flashboard 2 sealing on be evenly distributed with the fluid passage 5 that communicates with its side; Constitute an annular fluid cavity 4 with valve body 1 usefulness bolt assembling back in fixed valve base 3 is managed before valve body 1, fluid cavity 4 communicates with fluid passage 5 on the fixed valve base 3, the sectional area summation of its sectional area=fluid passage 5; It is 30 ° that two guide pads, 6 left and right symmetricallies leave vertical centre line angle β, be installed on by welding on the flashboard insertion groove bottom rear wall of valve body 1, and knife-edge flashboard 2 bottoms are that semicircle periphery knife-edge structure, its cone angle are 40 °, are inserted in the flashboard insertion groove that is provided with on the valve body 1.
Claims (7)
1, a kind of large diameter pipeline is carried gas-solid/liquid-solid mixture material, particularly carry the double-sealing knife-edge gate valve of the partition usefulness of air coal dust intermixture material, have and be used for sealed packing 8 and the packing differential 9 that sealing damper inserts mouth, it is characterized in that: it is by valve body 1, knife-edge flashboard 2, fixed valve base 3, fixedly be loaded on two knife-edge flashboard guide pads 6 on the valve body 1 and above-mentioned sealed packing 8, packing differential 9 and constitute, valve body 1 is provided with a flashboard insertion groove, and the inboard of pipe is provided with and has an inlet opening 7 on the pipe before a circular groove, the valve body 1 and drop in the circular groove before the valve body 1; With the circumferential surface of the fixed valve base 3 of flashboard 2 sealing on be evenly distributed with the fluid passage 5 that communicates with its side; Constitute an annular fluid cavity 4 with the fixing assembling of valve body 1 back in fixed valve base 3 is managed before valve body 1, fluid cavity 4 communicates the sectional area summation of its sectional area 〉=fluid passage 5 with fluid passage 5 on the fixed valve base 3; Two guide pads, 6 left and right symmetricallies are fixed on the flashboard insertion groove bottom rear wall of valve body 1, and knife-edge flashboard 2 is inserted in the flashboard insertion groove that is provided with on the valve body 1.
2, double-sealing knife-edge gate valve according to claim 1 is characterized in that: the bottom of knife-edge flashboard 2 is that semicircle periphery knife-edge structure, its cone angle are 40 °.
3, double-sealing knife-edge gate valve according to claim 1, it is characterized in that: fixed valve base 3 is steels.
4, double-sealing knife-edge gate valve according to claim 1 is characterized in that: the sectional area summation of the sectional area=fluid passage 5 of fluid cavity 4.
5, double-sealing knife-edge gate valve according to claim 2 is characterized in that: two guide pads 6 are that left and right symmetrically leaves vertical centre line angle β and is 30 °, is installed on the flashboard insertion groove bottom rear wall of valve body 1 by welding.
6, double-sealing knife-edge gate valve according to claim 3 is characterized in that: assemble with valve body 1 usefulness bolt in fixed valve base 3 is managed before valve body 1.
7, according to claim 4,5,6 described double-sealing knife-edge gate valves, it is characterized in that: what sealed packing 8 adopted is the asbestos seal packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90222110 CN2074847U (en) | 1990-10-24 | 1990-10-24 | Double-sealing knife shape plate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90222110 CN2074847U (en) | 1990-10-24 | 1990-10-24 | Double-sealing knife shape plate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2074847U true CN2074847U (en) | 1991-04-10 |
Family
ID=4900115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90222110 Withdrawn CN2074847U (en) | 1990-10-24 | 1990-10-24 | Double-sealing knife shape plate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2074847U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775428A (en) * | 2018-06-19 | 2018-11-09 | 陕西法士特齿轮有限责任公司 | A kind of check valve and control method for Retarder oil outlet |
-
1990
- 1990-10-24 CN CN 90222110 patent/CN2074847U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108775428A (en) * | 2018-06-19 | 2018-11-09 | 陕西法士特齿轮有限责任公司 | A kind of check valve and control method for Retarder oil outlet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |