CN108612860A - It is double to block wear-resistant sluice valve - Google Patents
It is double to block wear-resistant sluice valve Download PDFInfo
- Publication number
- CN108612860A CN108612860A CN201611137631.3A CN201611137631A CN108612860A CN 108612860 A CN108612860 A CN 108612860A CN 201611137631 A CN201611137631 A CN 201611137631A CN 108612860 A CN108612860 A CN 108612860A
- Authority
- CN
- China
- Prior art keywords
- valve
- flashboard
- drive cylinder
- valve chamber
- afterwards
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 36
- 125000006850 spacer group Chemical group 0.000 claims abstract description 14
- 239000003921 oil Substances 0.000 claims description 18
- 239000010720 hydraulic oil Substances 0.000 claims description 4
- 230000003628 erosive effect Effects 0.000 abstract description 5
- 230000005514 two-phase flow Effects 0.000 abstract description 5
- 230000007774 longterm Effects 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 239000003250 coal slurry Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000009428 plumbing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses a kind of pair to block wear-resistant sluice valve, the valve deck of this gate valve is set to valve body top surface, valve body is equipped with perforation with before sealing surface, valve chamber afterwards, branch is set up in valve deck top surface, before, drive cylinder is set to cradle top surface afterwards, before, before valve rod penetrates valve deck and top connection afterwards, the piston rod of drive cylinder afterwards, flashboard before preceding valve rod bottom end connection, preceding flashboard is located at preceding valve chamber and seals against face, connecting plate both ends are respectively articulated with rear valve rod bottom end and rear flashboard, flashboard is located at rear valve chamber and seals against face on one side afterwards, the another side of flashboard is provided with surface groove afterwards, spacer pin is set to the side wall of valve body and against the surface groove of rear flashboard.This gate valve can effectively improve the wear-resisting property in liquid-solid two-phase flow medium, eliminate cavitation erosion, improve the turn-off capacity of valve, it is ensured that the long-term and effective operation in pipeline, and significantly prolong the service life.
Description
Technical field
The present invention relates to a kind of pair to block wear-resistant sluice valve.
Background technology
There are many liquid fixed double phase flow medium pipelines, such as blast furnace slag flushing pipeline, coal slurry pipeline, plumbing drain in industrial circle
Etc..Medium is due to there is the presence of solid particle in these pipelines, otherwise cause pipe valve to fit badly or because washing away acutely
And lose leakproofness.Therefore the valve seal pair on such pipeline is usually to select the higher alloy material of hardness, nonetheless,
It washes away in particle high speed and grinds lower sealing surface quickly and will fail, valve is strong in the cavitation erosion for opening and closing the generation of moment fluid in addition
Strong, life of valve is very short.Therefore it is a problem urgently to be resolved hurrily to improve the wear-resisting property of such pipe valve and service life.
Invention content
Technical problem to be solved by the invention is to provide a kind of pair to block wear-resistant sluice valve, this gate valve can effectively improve
Wear-resisting property in Fluid-particle two-phase flows medium eliminates cavitation erosion, improves the turn-off capacity of valve, it is ensured that long-term in pipeline
Effectively operation, and significantly prolong the service life.
In order to solve the above technical problems, the double wear-resistant sluice valves that block of the present invention include valve body and valve deck, the valve deck is set to institute
Valve body top surface is stated, this gate valve further includes preceding flashboard, rear flashboard, preceding valve rod, rear valve rod, preceding drive cylinder, rear drive cylinder, connection
Plate, spacer pin and holder, the valve body are equipped with the preceding valve chamber of perforation and rear valve chamber, the rear end face of the preceding valve chamber and rear valve chamber
Front end face is sealing surface, and the branch is set up in the valve deck top surface, and the preceding drive cylinder and rear drive cylinder are respectively arranged on institute
Cradle top surface is stated, the preceding valve rod penetrates the valve deck and top connects the piston rod of the preceding drive cylinder, bottom end connection
The preceding flashboard, the preceding flashboard are located at the preceding valve chamber and against the sealing surfaces of the preceding valve chamber, and the rear valve rod penetrates
The valve deck and top connect the piston rod of the rear drive cylinder, and the connecting plate both ends are respectively articulated with the rear valve rod bottom
It holds and is located at the rear valve chamber with rear flashboard, the rear flashboard and on one side against the sealing surface of the rear valve chamber, the rear flashboard
Another side be provided with surface groove, the spacer pin is set to the side wall of the valve body and against the surface groove of flashboard after described.
Further, the both sides of the rear flashboard another side have surface groove, and the spacer pin is respectively arranged on the valve
The two side of body and against the surface groove of flashboard another side both sides after described.
Further, this gate valve further includes hydraulic station and oil pipe, the oil inlet of the preceding drive cylinder and rear drive cylinder and
Oil return opening is separately connected the hydraulic oil output end and oil revolving end of the hydraulic station by the oil pipe.
Since double wear-resistant sluice valves that block of the invention use above-mentioned technical proposal, i.e. the valve deck of this gate valve is set to valve body top surface, valve
Body is equipped with the forward and backward valve chamber with sealing surface of perforation, and branch is set up in valve deck top surface, and forward and backward drive cylinder is set to cradle top surface,
Forward and backward valve rod penetrates valve deck and top connects the piston rod of forward and backward drive cylinder, flashboard before preceding valve rod bottom end connection, front brake
Plate is located at preceding valve chamber and seals against face, and connecting plate both ends are respectively articulated with rear valve rod bottom end and rear flashboard, after rear flashboard is located at
Valve chamber and seal against face on one side, the another side of rear flashboard is provided with surface groove, spacer pin be set to the side wall of valve body and against
The surface groove of flashboard afterwards.This gate valve effectively improves the wear-resisting property in Fluid-particle two-phase flows medium, eliminates cavitation erosion, improves valve
The turn-off capacity of door, it is ensured that the long-term and effective operation in pipeline, and prolong the service life.
Description of the drawings
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings：
Fig. 1, which is that the present invention is double, blocks wear-resistant sluice valve structural schematic diagram；
Fig. 2 is A-A in Fig. 1 to enlarged view；
Fig. 3 is that rear flashboard closes schematic diagram in this gate valve；
Fig. 4 is that rear flashboard opens schematic diagram in this gate valve.
Specific implementation mode
Embodiment is as depicted in figs. 1 and 2, and it includes valve body 1 and valve deck 2 that the present invention couple, which blocks wear-resistant sluice valve, and the valve deck 2 is set
In 1 top surface of the valve body, this gate valve further includes preceding flashboard 3, rear flashboard 4, preceding valve rod 5, rear valve rod 6, preceding drive cylinder 7, rear-guard
Dynamic oil cylinder 8, connecting plate 9, spacer pin 10 and holder 21, the valve body 1 is equipped with the preceding valve chamber 11 and rear valve chamber 12 of perforation, before described
The front end face of the rear end face of valve chamber 11 and rear valve chamber 12 is sealing surface, and the holder 21 is set to 2 top surface of the valve deck, the forerunner
Dynamic oil cylinder 7 and rear drive cylinder 8 are respectively arranged on 21 top surface of the holder, and the preceding valve rod 5 penetrates the valve deck 2 and top connects
Connect the piston rod of the preceding drive cylinder 7, bottom end connects the preceding flashboard 3, the preceding flashboard 3 be located at the preceding valve chamber 11 and
Against the sealing surface of the preceding valve chamber 11, the rear valve rod 6 penetrates the valve deck 2 and top connects the rear drive cylinder 8
Piston rod, 9 both ends of the connecting plate be respectively articulated with it is described after 6 bottom end of valve rod and rear flashboard 4, it is described after flashboard 4 be located at it is described
Afterwards valve chamber 12 and one side against valve chamber after described 12 sealing surface, it is described after the another side of flashboard 4 be provided with surface groove 41, it is described
Spacer pin 10 is set to the side wall of the valve body 1 and against the surface groove 41 of flashboard after described 4.
Preferably, the both sides of 4 another side of the rear flashboard have surface groove 41, and the spacer pin 10 is respectively arranged on institute
State the two side of valve body 1 and against the surface groove 41 of 4 another side both sides of flashboard after described.The inclined-plane of flashboard another side both sides afterwards
Thrust when flashboard is closed after slot balance, it is ensured that rear flashboard is in sealing contact with rear valve chamber sealing surface, to ensure reliable close.
Preferably, this gate valve further includes hydraulic station 71 and oil pipe 72, the preceding drive cylinder 7 and rear drive cylinder 8 into
Hydraulic fluid port and oil return opening are separately connected the hydraulic oil output end and oil revolving end of the hydraulic station 71 by the oil pipe 72.This gate valve is logical
The sequence of movement of the preceding driving oil cylinder and rear drive cylinder of hydraulic pressure stand control is crossed, and then controls the preceding flashboard of this gate valve and rear flashboard respectively
Opening and closing in order, to ensure the performance of this gate valve.
It is acted by the preceding driving oil cylinder of hydraulic pressure stand control and the rear driving preceding flashboard of hydraulic oil cylinder driving and rear flashboard when this gate valve works.
The sealing surface of valve chamber before flashboard drops to before being driven first by preceding valve rod by preceding drive cylinder when closing valve, preceding flashboard is in valve at this time
Sealing surface is adjacent to form self sealing structure under the action of body inlet side pressure medium；After preceding flashboard is sealed to position, by rear
Flashboard declines after drive cylinder is driven by rear valve rod, since rear flashboard and rear valve rod are hinged by connecting plate, declines process
Surface groove is made rear flashboard slowly approach the sealing surface of rear valve chamber, drive cylinder after rear flashboard closes in place by the thrust of spacer pin
Continue to press, due to the effect of the surface groove and spacer pin of back brake back, rear flashboard is made to be forced to push the sealing of rear valve chamber to
Face, to form forced seal structure.Sequence when valve opening with close valve on the contrary, rear flashboard is first opened, in place after, preceding flashboard is opened again
It opens, during which, due to the thrust by medium when rear flashboard is opened so that the sealing surface of valve chamber after rear flashboard is detached from.The keying side
The purpose of formula be protect after the sealing surface of flashboard and rear valve chamber in opening-closing process not by dielectric damages.
As shown in Figure 3 and Figure 4, for rear flashboard 4 with rear valve rod 6 by 9 hinge connection of connecting plate, which is for rear flashboard
4 in opening-closing process there are one offset, so that rear flashboard 4 is kept certain with the sealing surface of rear valve chamber 12 always when moving up and down
Distance, therefore do not rub between them, the service life is longer for sealing surface.And when rear flashboard 4 closes in place, pass through surface groove
41 so that rear flashboard 4 is traversing again and contacts to form forced seal with the sealing surface of rear valve chamber 12 with the cooperation of spacer pin 10.
In containing a large amount of impurity, the especially medium containing high hardness particle, the unlatching starting stage of valve and closing latter end,
At the time of to be medium wash away cavitation erosion most serious to valve sealing face, while being easiest to clamp between flap and valve body sealing surface
Grain, if pellet hardness is high, will damage sealing surface, cause seal failure.Even if hardness is not high, impurity be clipped in two sealing surfaces it
Between, it will also result in valve and be not closed completely, such two-phase flow medium will be with hypervelocity by this gap, will soon be by sealing surface
It washes away groove, can equally make seal failure.And this double wear-resistant sluice valve that block uses former and later two flashboards successively to open in a creative way
The on-off mode closed, after preceding flashboard is closed, in rear valve chamber without medium in the presence of, rear flashboard is just begun to shut off, thus
It avoids rear flashboard and is closing the destruction of latter end medium and impurity to valve sealing face.When valve opening, after rear flashboard reaches position, front brake
Plate is then turned on, and is also to flashboard after protection.Even if occurring abrasion leakage after preceding flashboard longtime running, still can play pair
The protective effect of flashboard afterwards makes rear flashboard keep sealing, to make entire valve keep sealing state.Due to first closing preceding flashboard,
There is no high-speed Medium to wash away when flashboard is closed afterwards, therefore does not cavitate, the longer life expectancy of valve body and flashboard.
This gate valve is different from common gate valve, and the sealing surface of flashboard is with rear valve chamber sealing surface during up and down motion thereafter
Discontiguous, therefore just without the friction of sealing surface, it is to be pulled to the sealing surface of rear valve chamber to get on afterwards in place that rear flashboard, which closes,
Therefore the service life is longer.
This pair blocks wear-resistant sluice valve by new principle and structure, eliminates the defect of conventional valves, is suitable for solid-liquid two
Phase flow medium pipeline especially becomes apparent from dregginess is very high, pellet hardness is high, washes away advantage in serious pipeline, can be long-term
Effectively operation, and obtain significant economic benefit.
This gate valve forms double amputated structures using front and back flashboard, and reliability and service life, which have, to be increased exponentially, and
And even if preceding flashboard pressure medium it is low or abrasion after generate leakage, since it has blocked most rate-of flows, according to
It can so shield in opening-closing process to rear flashboard.This gate valve significantly improve wear-resisting on pipeline containing granule medium and
Abrasion resistance extends the period of maintenance of valve replacement, and service life is multiplied, and considerably reduces system operation cost,
It ensure that the transmitting of pipeline medium.
Claims (3)
1. a kind of pair is blocked wear-resistant sluice valve, including valve body and valve deck, the valve deck is set to the valve body top surface, it is characterised in that：
Further include preceding flashboard, rear flashboard, preceding valve rod, rear valve rod, preceding drive cylinder, rear drive cylinder, connecting plate, spacer pin and holder,
The valve body is equipped with the preceding valve chamber of perforation and rear valve chamber, and the rear end face of the preceding valve chamber and the front end face of rear valve chamber are sealing surface,
The branch is set up in the valve deck top surface, and the preceding drive cylinder and rear drive cylinder are respectively arranged on the cradle top surface, described
Preceding valve rod penetrates the valve deck and top connects the piston rod of the preceding drive cylinder, bottom end connects the preceding flashboard, described
Preceding flashboard is located at the preceding valve chamber and against the sealing surface of the preceding valve chamber, and the rear valve rod penetrates the valve deck and top
The piston rod of the rear drive cylinder is connected, the connecting plate both ends are respectively articulated with the rear valve rod bottom end and rear flashboard, described
Flashboard is located at the rear valve chamber afterwards and on one side against the sealing surface of the rear valve chamber, the another side of the rear flashboard is provided with inclined-plane
Slot, the spacer pin are set to the side wall of the valve body and against the surface grooves of flashboard after described.
2. according to claim 1 pair is blocked wear-resistant sluice valve, it is characterised in that：The both sides difference of flashboard another side after described
Be provided with surface groove, the spacer pin be respectively arranged on the two side of the valve body and against after described flashboard another side both sides it is oblique
Face slot.
3. according to claim 1 or 2 pair is blocked wear-resistant sluice valve, it is characterised in that：This gate valve further includes hydraulic station and oil
Pipe, the oil inlet and oil return opening of the preceding drive cylinder and rear drive cylinder are separately connected the hydraulic station by the oil pipe
Hydraulic oil output end and oil revolving end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611137631.3A CN108612860B (en) | 2016-12-12 | Double-cutoff wear-resistant gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611137631.3A CN108612860B (en) | 2016-12-12 | Double-cutoff wear-resistant gate valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108612860A true CN108612860A (en) | 2018-10-02 |
| CN108612860B CN108612860B (en) | 2024-10-22 |
Family
ID=
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB877962A (en) * | 1957-12-18 | 1961-09-20 | Hans Ringgenberg | Gate valves for controlling fluid flow |
| GB921214A (en) * | 1958-07-24 | 1963-03-13 | William Gomersall | Improvements in or relating to gate valves |
| CN2315367Y (en) * | 1997-12-26 | 1999-04-21 | 靖江市金屏专用阀门制造厂 | Quick open type mud discharge valve |
| CN203585388U (en) * | 2013-09-25 | 2014-05-07 | 湖北三盟机械制造有限公司 | Gate valve liquid preparation device on briquette coal production line |
| CN204533601U (en) * | 2015-03-15 | 2015-08-05 | 辽宁圣赫机械制造成套设备有限公司 | The pneumatic double ram type unloading valve of mineral hot furnace dust collector ash hopper |
| CN206320326U (en) * | 2016-12-12 | 2017-07-11 | 凯泰阀门(集团)有限公司 | It is double to block wear-resistant sluice valve |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB877962A (en) * | 1957-12-18 | 1961-09-20 | Hans Ringgenberg | Gate valves for controlling fluid flow |
| GB921214A (en) * | 1958-07-24 | 1963-03-13 | William Gomersall | Improvements in or relating to gate valves |
| CN2315367Y (en) * | 1997-12-26 | 1999-04-21 | 靖江市金屏专用阀门制造厂 | Quick open type mud discharge valve |
| CN203585388U (en) * | 2013-09-25 | 2014-05-07 | 湖北三盟机械制造有限公司 | Gate valve liquid preparation device on briquette coal production line |
| CN204533601U (en) * | 2015-03-15 | 2015-08-05 | 辽宁圣赫机械制造成套设备有限公司 | The pneumatic double ram type unloading valve of mineral hot furnace dust collector ash hopper |
| CN206320326U (en) * | 2016-12-12 | 2017-07-11 | 凯泰阀门(集团)有限公司 | It is double to block wear-resistant sluice valve |
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