CN1166582A - Gate valve with rubber lining - Google Patents
Gate valve with rubber lining Download PDFInfo
- Publication number
- CN1166582A CN1166582A CN 97105045 CN97105045A CN1166582A CN 1166582 A CN1166582 A CN 1166582A CN 97105045 CN97105045 CN 97105045 CN 97105045 A CN97105045 A CN 97105045A CN 1166582 A CN1166582 A CN 1166582A
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- CN
- China
- Prior art keywords
- valve body
- flange
- flashboard
- rubber
- gate valve
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Abstract
The gate valve includes hydraulic cylinder, driving rod, gate plate and one pair of flanges connected to rectangular valve body. The driving rod is connected to gate plate at the top and hydraulic cylinder to the valve body via link shaft. The gate valve features its two flanges with composite lining of soft rubber and polyurethane, two slide rings and two repositing springs inside the annular notch between the valve body and the flange, and two bearings besides the gate plate and on the valve body. It has good dynamic and static hermeticity and sealing parts is wear and corrosion resistant and can bear pressure as high as 6.4 MPa.
Description
The present invention relates to the gate valve in a kind of slurry medium course of conveying.
At present, in the slurry medium course of conveying, adopt gate valve, butterfly valve etc. usually, as come the break-make or the flow of slurry medium in the pilot line with mud valve, coal slurry valve, slag-off valve, air water valve.The shortcoming that these valves exist is the wear-resisting and poor corrosion resistance of Sealing, thus the working life of having reduced Sealing.A kind of line with rubber gate valve produced in USA, this valve is in a pair of abutted flange, be lined with packing element respectively, two packing elements are not when flashboard turn-offs, its butt joint end face is in the interference mated condition, with etch and the wearing and tearing to valve flange of the medium that prevents to carry in the pipeline, when closing flashboard, flashboard then pushes through two line with rubber tube end faces and reaches the purpose of ne-leakage throttle down.Owing to be to only depend on the natural interference fit of line with rubber tube end face to realize between two line with rubber tubes or the sealing between line with rubber tube and the flashboard, therefore easily produce two line with rubber tube butt joint end faces and turn over lip and malreduction phenomenon, even line with rubber tube end face cut damage by flashboard, influences the sealability of valve.Common this valve only can bear 1.6Mpa with downforce.
Purpose of the present invention provides a kind of gate valve with rubber liner with compound line with rubber tube and sliding sleeve protection mechanism.
Purpose of the present invention realizes by following technique measures, that is:
1, the line with rubber tube that is arranged in 2 abutted flanges is compound line with rubber tube, is composited compound line with rubber tube by soft rubber and polyurethane, good springiness not only, and improved wear-resisting and decay resistance, and the polyurethane on simultaneously compound, that has also reduced by 2 line with rubber tube butt joint end faces turns over the lip phenomenon.
2, lip does not appear turning in the interference fit in order to ensure the butt joint end face that is arranged on the compound line with rubber tube in 2 abutted flanges, in the joint and the annular groove between the valve body of 2 abutted flanges, is provided with the sliding sleeve protection mechanism that is made of sliding sleeve and Returnning spring.
After adopting abovementioned technology, when opening a sluice gate state, the butt joint end face of 2 compound line with rubber tubes of butt joint is in the interference fit state, reaches good sealing effect, but because of the sliding sleeve protection mechanism is arranged, the lip phenomenon therefore can not occur turning over.When barrier gate, flashboard moves down, and pushes through the butt joint end face of 2 compound line with rubber tubes of butt joint, and can realize motive sealing.Because the compound line with rubber tube of butt joint does not have the lip of turning over and resets well, flashboard moves down Shi Buhui and cuts and decrease compound line with rubber tube, and when moving away 2 sliding sleeves on the flashboard, 2 Returnning springs reset, and makes the butt joint that resets of 2 sliding sleeves, protects 2 compound line with rubber tubes, makes its interface not turn over lip.
Gate valve with rubber liner of the present invention, not only dynamically and the static sealing performance good, and Sealing is wear-resisting, decay resistance is high, bears pressure up to 6.4Mpa.
Fig. 1 is a gate valve with rubber liner structural representation of the present invention, and Fig. 2 is the side view of Fig. 1.The invention will be further described below in conjunction with accompanying drawing.
The present invention, promptly gate valve with rubber liner comprises drive part, conjuncted axle, working portion.Drive part is a hydraulic driving, and hydraulic driving partly comprises oil hydraulic cylinder 1, driveshaft 2.Working portion comprises flashboard 4, a pair of flange 7 and 11 by 12 butt joints of rectangle valve body.The upper end of flashboard 4 is connected with driveshaft by flashboard interlocking 6.Oil hydraulic cylinder 1 connects into an overall structure with rectangle valve body 12 by conjuncted axle 3.On flange 7 and flange 11 inwalls, serve as a contrast the compound line with rubber tube 8 and 10 that is composited with soft rubber and polyurethane respectively.In the rear end of compound line with rubber tube 8 and 10 boss 13,14 is arranged respectively, boss 13,14 is embedded in respectively in the corresponding annular groove of flange 7 and flange 11 rear ends and boss 13,14, and closely cooperates.Compound line with rubber tube 8 and 10 front end, respectively with the turnup structure of himself, be fixed on the front end of flange 7 and flange 11, and produce the butt joint of interference fit.In order to prevent that compound line with rubber tube 8 and 10 butt ends from turning over lip because of interference fit produces, be provided with sliding sleeve ring 15,16 and Returnning spring 17,18 in the annular groove between rectangle valve body 12 and abutted flange 7 and 11.Sliding sleeve ring 15,16 can be made of plastic, and also the available metal material is made.
Because when flashboard 4 is in closed condition, be subjected to the medium uniaxial pressure, and compound line with rubber tube can not reach rigid support, for solving the flashboard 4 rigid support problem when in running order, near on the valve body of flashboard 4 both sides, outer ring surface is set respectively leans against 2 bearings 5 on the flashboard 4.In order to increase the stability of flashboard guiding, can guide bearing 19 and 20 be set at rectangle valve body middle part and bottom.
In order to prevent that further medium is by seepage outside the interference butt end of compound line with rubber tube 8 and 10 and the sealability of raising flashboard 4 in switching process, adopt the oil sealing way, promptly in the valve body chamber of rectangle valve body 12, be full of oil 21, and oil hole 22 and oil drainage hole 9 are set on valve body.
During use, cut-off valve, driveshaft 2 promotes flashboard 4 and moves down, vertically move down and push open sliding sleeve ring 15,16 (making Returnning spring 17,18 compressions) through bearing 5 guiding, enter the compound line with rubber tube 8 and 10 of interference butt joint, at last with under the flashboard on earth, block MEDIA FLOW siphunculus road.When playing flashboard, driveshaft 2 drives on the flashboards 4 and moves, and successively leaves the compound line with rubber tube 8 and 10 and sliding sleeve ring 15 and 16 of interference butt joint.This moment, Returnning spring 17 and 18 resetted, and promoted sliding sleeve ring 15 and 16 and resetted.
Drive part of the present invention also can adopt Mechanical Driven or manual.
Claims (4)
1, gate valve with rubber liner, comprise drive part, conjuncted axle (3) and working portion, drive part comprises oil hydraulic cylinder (1), driveshaft (2), working portion comprises flashboard (4), a pair of flange (7) and (11) by rectangle valve body (12) butt joint, the upper end of flashboard (4) is connected with driveshaft by flashboard interlocking (6), oil hydraulic cylinder (1) connects into an overall structure with rectangle valve body (12) by conjuncted axle (3), it is characterized in that the compound line with rubber tube (8) and (10) that serve as a contrast respectively to be composited by soft rubber and polyurethane have boss (13) respectively in the rear end of compound line with rubber tube (8) and (10) on flange (7) and flange (11) inwall, (14), boss (13) and (14) are embedded in respectively on flange (7) and flange (11) rear end and boss (13), (14) in the corresponding groove, the front end of compound line with rubber tube (8) and (10) is fixed on the front end of flange (7) and (11) respectively with himself turnup structure, and interference fit; In the annular groove between rectangle valve body (12) and abutted flange (7), (11), be provided with sliding sleeve ring (15) and sliding sleeve ring (16) and Returnning spring (17) and (18).
2, gate valve with rubber liner according to claim 1 is characterized in that near on the valve body of flashboard (4) both sides, outer ring surface is set respectively leans against 2 bearings (5) on the flashboard (4).
3, gate valve with rubber liner according to claim 1 and 2 is characterized in that in the middle part and the bottom of rectangle valve body (12) guide bearing (19) and (20) being set.
4, gate valve with rubber liner according to claim 1 and 2 is characterized in that filling with oil (21) in the valve body chamber of rectangle valve body (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97105045 CN1166582A (en) | 1997-01-21 | 1997-01-21 | Gate valve with rubber lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97105045 CN1166582A (en) | 1997-01-21 | 1997-01-21 | Gate valve with rubber lining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1166582A true CN1166582A (en) | 1997-12-03 |
Family
ID=5167607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97105045 Pending CN1166582A (en) | 1997-01-21 | 1997-01-21 | Gate valve with rubber lining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1166582A (en) |
-
1997
- 1997-01-21 CN CN 97105045 patent/CN1166582A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |