CN201554708U - Pneumatic control hydraulic lifting valve - Google Patents
Pneumatic control hydraulic lifting valve Download PDFInfo
- Publication number
- CN201554708U CN201554708U CN2009200484907U CN200920048490U CN201554708U CN 201554708 U CN201554708 U CN 201554708U CN 2009200484907 U CN2009200484907 U CN 2009200484907U CN 200920048490 U CN200920048490 U CN 200920048490U CN 201554708 U CN201554708 U CN 201554708U
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- valve
- spring
- cone
- push rod
- pressure
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Abstract
The utility model relates to a pneumatic control hydraulic lifting valve, which is characterized in that a hydraulic pressure retaining portion includes an oil plug, a cone valve II, a valve bush, a guide valve and a spring I. The spring I is arranged inside a cavity of the cone valve II; two ends of the spring I are respectively fixed between the oil plug and the guide valve; a cone seal is formed on the guide valve through a conical surface and an orifice of the cone valve II; and a cone seal is formed on the cone valve II through the conical surface and an orifice of the valve bush. A pneumatic control portion includes a push rod, a spring II and a valve cover; one end of the spring II is fixed onto the push rod; the other end of the spring II is fixed onto a valve body spring seat; and the head portion of the push rod penetrates through the valve bush to contact with the guide valve when in descending movement. The pneumatic control hydraulic lift valve has the advantages: fine sealing performance, realized rapid sealing, no jamming of high-temperature valve cores, simple and convenient assembly and convenient maintenance and replacement.
Description
Technical field
The utility model relates to a kind of hydrovalve, relates in particular to a kind of Pneumatic and hydraulic lifting valve.
Background technique
Pneumatic and hydraulic lifting valve mainly is to control the opening and closing of hydraulic lifting valve by pneumatic valve, thereby makes the railway carriage part of agricultural vehicle rise under the effect of oil hydraulic cylinder, descend and stop, and realizes the function of unloading automatically.Existing Pneumatic and hydraulic lifting valve hydraulic control as shown in Figure 1, comprise cone valve 1 ', pressure adjusting spring 2 ', spring seat 3 ', locking nut 4 ', adjustable lever 5 ' and spiral shell emit 6 ', lack valve seat, the valve orifice life-span, low (high-frequency percussion easily causes the aperture to damage) influenced the usability of valve.Pneuamtic part piston 7 ' be connected as one with valve rod is high to the processing technology requirement of valve body hole.Elevator mechanism adopts guiding valve 8 ' structure, because usefulness y-shaped ring 10 between valve rod and valve body 9 ' hole ', because of dumping car field work, summer temperature height, working oil temperature can reach more than 100 ℃, and y-shaped ring is easily aging, cause seal failure, dumping car falls because of deadweight.
The model utility content
The purpose of this utility model provides a kind of Pneumatic and hydraulic lifting valve, its good seal performance, and assembling is simple, and is easy to maintenance, long service life, performance brilliance.
The technical solution adopted in the utility model is:
Pneumatic and hydraulic lifting valve, comprise pressure control mechanism and direction control mechanism, described pressure control mechanism comprises cone valve I, pressure adjusting spring, adjustable lever, locking nut and nut, described pressure adjusting spring one end is fixedlyed connected with cone valve I, the other end is fixedlyed connected with the spring seat on being fixed on adjustable lever, described direction control mechanism comprises pneuamtic part and the pressure retaining part that surges, have pressure oil cavity P and oil back chamber T in described cone valve I and the valve body between the pressure retaining part of surging, the described pressure retaining part that surges comprises plug cock, cone valve II, valve pocket, pilot valve and spring I, described spring I places in the cone valve II chamber, and described spring I two ends are individually fixed between plug cock and the pilot valve; When carrying out the elevate a turnable ladder action, described pilot valve forms the awl sealing by the aperture of the conical surface and cone valve II, and described cone valve II forms the awl sealing by the aperture of the conical surface and valve pocket; Described pneuamtic part comprises push rod, spring II and valve gap, and described spring II one end is fixed on the push rod, and the other end is fixed on the valve body spring seat; When carrying out down maneuver, described push rod head passes valve pocket and contacts with pilot valve.
Described and plug cock contact jaw and and the valve pocket of push rod contact jaw and valve body between be respectively equipped with the O RunddichtringO, be provided with the O RunddichtringO between described plug cock and the valve pocket, be provided with the O RunddichtringO between described push rod and the valve body, be provided with the O RunddichtringO between described push rod and the valve body spring seat.
Be provided with valve seat between described cone valve I and the pressure oil cavity P, have the oilhole that connects pressure oil cavity P and oil back chamber T in the described valve seat.
The utility model Pneumatic and hydraulic lifting valve, be provided with valve seat between described cone valve I and the pressure oil cavity P, have the oilhole that connects pressure oil cavity P and oil back chamber T in the described valve seat, can make like this and form the high-frequency percussion sealing between cone valve I and the valve seat, thereby can improve the valve seat quenching hardness and prolong oil sealing mouth working life, improve the usability of valve.
The utility model is when carrying out the elevate a turnable ladder action, and described pilot valve forms the awl sealing by the aperture of the conical surface and cone valve II, and described cone valve II forms the awl sealing by the aperture of the conical surface and valve pocket; Said structure makes the pressurize of surging partly form secondary cone valve type sealing configuration, constitute primary seal between promptly existing pilot valve and the cone valve II, constitute secondary seal between cone valve II and the valve pocket, its objective is: lay down high pressure oil earlier and reduce hydraulic shock, connecting pipeline is difficult for loosening, prolongs pipe joint and seal life.The utility model is when carrying out down maneuver, and described push rod head passes valve pocket and contacts with pilot valve, and promptly the pneuamtic part in the direction control mechanism partly is adopt to divide a body structure with the pressurize of surging, make processing, keep in repair more convenient.
The utility model and plug cock contact jaw and and the valve pocket of push rod contact jaw and valve body between be respectively equipped with the O RunddichtringO, be provided with the O RunddichtringO between described plug cock and the valve pocket, be provided with the O RunddichtringO between described push rod and the valve body, be provided with the O RunddichtringO between described push rod and the valve body spring seat.After adopting the O RunddichtringO valve pocket is maintained static by seal ring, and strengthen seepage-proof oil ability between each structure greatly, sealability improves, thus the working efficiency and the working life of having improved each oil pocket.
The utility model has the advantages that: good seal performance, realize quick-sealing, the high temperature spool is not stuck, assemble easy, convenient maintenance and replacement.
Description of drawings
Fig. 1 is the prior art constructions schematic representation.
Fig. 2 is a structural representation of the present utility model.
Fig. 3 is the A-A view of Fig. 2.
Fig. 4 is the B-B view of Fig. 2.
Fig. 5 is the surge structural representation of pressure retaining part of the utility model direction control mechanism.
Fig. 6 is the utility model schematic diagram.
Wherein: 1, valve body, 2, plug cock, 3, spring I, 4, cone valve II, 5, valve pocket, 6, pilot valve, 7, oilhole, 8, valve seat, 9, cone valve I, 10, pressure adjusting spring, 11, adjustment sleeve, 12, spring seat, 13, nut, 14, adjustable lever, 15, locking nut, 16, valve gap, 17, push rod, 18, air-inlet cavity C, 19, spring II, 20, the O RunddichtringO, 21, the valve body spring seat, 22, back leakage connection, 23, oil back chamber T, 24, plug, 25, fuel inlet fitting, 26, pressure oil cavity P, 27, damping fin, 28, delivery connection.
Embodiment
Extremely shown in Figure 6 as Fig. 2, Pneumatic and hydraulic lifting valve, comprise pressure control mechanism and direction control mechanism, pressure control mechanism comprises cone valve I9, pressure adjusting spring 10, adjustable lever 14, adjustment sleeve 11, locking nut 15 and nut 13, pressure adjusting spring 10 1 ends are fixedlyed connected with cone valve I9, the other end is fixedlyed connected with the spring seat 12 on being fixed on adjustable lever 14, direction control mechanism comprises pneuamtic part and the pressure retaining part that surges, have pressure oil cavity P26 and oil back chamber T23 in cone valve I9 and the valve body 1 between the pressure retaining part of surging, be provided with valve seat 8 between cone valve I9 and the pressure oil cavity P26, have the oilhole 7 that connects pressure oil cavity P26 and oil back chamber T23 in this valve seat 8; The pressure retaining part that surges comprises plug cock 2, cone valve II4, valve pocket 5, pilot valve 6 and spring I3, and spring I3 places in the cone valve II4 chamber, and spring I3 two ends are individually fixed between plug cock 2 and the pilot valve 6; When carrying out the elevate a turnable ladder action, pilot valve 6 forms the awl sealing by the aperture of the conical surface and cone valve II4, and cone valve II4 forms the awl sealing by the aperture of the conical surface and valve pocket 5; Pneuamtic part comprises push rod 17, spring II19 and valve gap 16, and spring II19 one end is fixed on the push rod 17, and the other end is fixed on the valve body spring seat 21; When carrying out down maneuver, push rod 17 heads pass valve pocket 5 and contact with pilot valve 6; Be provided with damping fin 27 between delivery connection 28 and the pressure oil cavity P26; Be provided with plug 24 with the oil back chamber T23 of back leakage connection 22 relative sides.For improving sealability, and plug cock 2 contact jaws and and the valve pocket 5 of push rod 17 contact jaws and valve body 1 between be respectively equipped with O RunddichtringO 20, be provided with O RunddichtringO 20 between plug cock 2 and the valve pocket 5, be provided with O RunddichtringO 20 between push rod 17 and the valve body 1, be provided with O RunddichtringO 20 between push rod 17 and the valve body spring seat 21.
Working principle of the present utility model is:
As shown in Figure 6, Pneumatic and hydraulic lifting valve oil inlet P 1 connects oil pump, and suction port C connects control source of the gas (0.6-1.0MPa), and oil outlet P2 connects power unit, the oil return inlet T connected tank.Pressure oil is that fuel inlet fitting 25 enters pressure oil cavity P26 by oil inlet P 1, pressure oil cavity P26 one end is formed the sealing of pressure regulation awl by valve seat 8 and cone valve I9, the secondary awl sealing that one end is made up of cone valve II4 and valve pocket 5 and pilot valve 6, another termination executive component is picked out by fuel discharge port 28.
Oil back chamber T23 is by back leakage connection 22 oil sump tanks, and the spring chamber of sealing is bored in the logical pressure regulation of oil back chamber T23 one end, push rod 17 ends of the logical secondary awl of end sealing.
The utility model Pneumatic and hydraulic lifting valve operation is such:
One, oil cylinder lifting
Pressure oil is that fuel inlet fitting 25 enters pressure oil cavity P26 by oil inlet P 1, the set pressure of awl sealing by pressure adjusting spring 10 set up (dispatch from the factory set up for 20MPa when pressure oil cavity P26 pressure during above set pressure, cone valve I9 lifts off a seat and 8 produces overflows and connect oil back chamber T23, play the safety valve effect), when oil cylinder lifting load during less than 20MPa valve seat 8 and cone valve I9 form the awl sealing.
Cone valve II4 and valve pocket 5 and pilot valve 6 are formed into the sealing of secondary awl each other, promptly act on and form the sealing of secondary awl between cone valve II4 and the valve pocket 5 by pressure oil cavity P26 pressure oil, form the sealing of one-level awl between pilot valve 6 and the cone valve II4, pressure oil is directly supplied with the executive component elevating ram, up to reaching both fixed heights.
Two, oil cylinder stops hydraulic locking
Directly supply with the executive component elevating ram when pressure oil, pneumatic part stops air feed when both reaching fixed height, and this moment, cone valve II4 and pilot valve 6 were closed rapidly under the effect of spring II19 and hydraulic jack gravity, and oil cylinder is locked on the shutheight at once.The sealing effect of sealing of pressure regulation awl and the sealing of secondary awl is very good, can pin for a long time, satisfies the requirement of user's unloading time.
Three, oil cylinder descends
When gas control pressure enters air-inlet cavity C18 by valve gap 16 interfaces, gas pressure produces thrust left at push rod 17 right-hand members, overcome spring II19 to left dislocation, at first push pilot valve 6 open and leave cone valve II4 endoporus seat, the sealing of first order awl is opened, pressure oil cavity P26 and oil back chamber T23 small size are connected, high pressure oil is laid down, oil cylinder slowly descends, push rod 17 continuation this moment are arrived the maximum position place to left dislocation up to cone valve II4 being pushed away valve pocket 5, pressure oil cavity P26 and oil back chamber T23 large size are connected, oil cylinder descends fast, and after gas control pressure was laid down, push rod 17 resetted under the restoring force effect of spring II19 fast, pilot valve 6 and cone valve II4 reset under the effect of spring I3 restoring force and valve pocket 5 composition secondary awl sealings fast simultaneously, and oil cylinder stops at certain control position again.
Repeat above operating process and can realize that oil cylinder rises, stops and following degradation control operation.
Claims (3)
1. Pneumatic and hydraulic lifting valve, comprise pressure control mechanism and direction control mechanism, described pressure control mechanism comprises cone valve I, pressure adjusting spring, adjustable lever, locking nut and nut, described pressure adjusting spring one end is fixedlyed connected with cone valve I, the other end is fixedlyed connected with the spring seat on being fixed on adjustable lever, described direction control mechanism comprises the pneuamtic part and the pressure retaining part that surges, and has pressure oil cavity P and oil back chamber T in described cone valve I and the valve body between the pressure retaining part of surging, and it is characterized in that
The described pressure retaining part that surges comprises plug cock, cone valve II, valve pocket, pilot valve and spring I, and described spring I places in the cone valve II chamber, and described spring I two ends are individually fixed between plug cock and the pilot valve; When carrying out the elevate a turnable ladder action, described pilot valve forms the awl sealing by the aperture of the conical surface and cone valve II, and described cone valve II forms the awl sealing by the aperture of the conical surface and valve pocket;
Described pneuamtic part comprises push rod, spring II and valve gap, and described spring II one end is fixed on the push rod, and the other end is fixed on the valve body spring seat; When carrying out down maneuver, described push rod head passes valve pocket and contacts with pilot valve.
2. Pneumatic and hydraulic lifting valve according to claim 1, it is characterized in that described and plug cock contact jaw and and the valve pocket of push rod contact jaw and valve body between be respectively equipped with the O RunddichtringO, be provided with the O RunddichtringO between described plug cock and the valve pocket, be provided with the O RunddichtringO between described push rod and the valve body, be provided with the O RunddichtringO between described push rod and the valve body spring seat.
3. Pneumatic and hydraulic lifting valve according to claim 1 is characterized in that being provided with valve seat between described cone valve I and the pressure oil cavity P, has the oilhole that connects pressure oil cavity P and oil back chamber T in the described valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200484907U CN201554708U (en) | 2009-10-22 | 2009-10-22 | Pneumatic control hydraulic lifting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200484907U CN201554708U (en) | 2009-10-22 | 2009-10-22 | Pneumatic control hydraulic lifting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201554708U true CN201554708U (en) | 2010-08-18 |
Family
ID=42614390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200484907U Expired - Fee Related CN201554708U (en) | 2009-10-22 | 2009-10-22 | Pneumatic control hydraulic lifting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201554708U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032398A (en) * | 2012-12-21 | 2013-04-10 | 武汉航天波纹管股份有限公司 | Ball control flow jet type high-frequency electrohydraulic digital valve |
| CN104214151A (en) * | 2014-08-14 | 2014-12-17 | 阜新力夫特液压有限公司 | Pneumatic control hydraulic system for dumper |
| CN106812750A (en) * | 2015-12-01 | 2017-06-09 | 北汽福田汽车股份有限公司 | A kind of valve for avoiding part from receiving impacting with high pressure, hydraulic system and vehicle |
-
2009
- 2009-10-22 CN CN2009200484907U patent/CN201554708U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032398A (en) * | 2012-12-21 | 2013-04-10 | 武汉航天波纹管股份有限公司 | Ball control flow jet type high-frequency electrohydraulic digital valve |
| CN103032398B (en) * | 2012-12-21 | 2015-07-08 | 武汉航天波纹管股份有限公司 | Ball control flow jet type high-frequency electrohydraulic digital valve |
| CN104214151A (en) * | 2014-08-14 | 2014-12-17 | 阜新力夫特液压有限公司 | Pneumatic control hydraulic system for dumper |
| CN104214151B (en) * | 2014-08-14 | 2016-04-27 | 阜新力夫特液压有限公司 | A kind of dumping car air-over hydraulic |
| CN106812750A (en) * | 2015-12-01 | 2017-06-09 | 北汽福田汽车股份有限公司 | A kind of valve for avoiding part from receiving impacting with high pressure, hydraulic system and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 Termination date: 20101022 |