CN2193949Y - Levelling valve - Google Patents
Levelling valve Download PDFInfo
- Publication number
- CN2193949Y CN2193949Y CN 94224138 CN94224138U CN2193949Y CN 2193949 Y CN2193949 Y CN 2193949Y CN 94224138 CN94224138 CN 94224138 CN 94224138 U CN94224138 U CN 94224138U CN 2193949 Y CN2193949 Y CN 2193949Y
- Authority
- CN
- China
- Prior art keywords
- valve body
- push rod
- valve
- pushing rod
- main valve
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a mechanical leveling valve which is used to control and adjust the height of the object by an air spring supporting, mainly comprising a lower valve body, a main valve core, a sealing pad, an upper valve body, an outer pushing rod, an inner pushing rod, a ball, etc. The lower end of main valve core and the lower valve body compose a plunger cylinder, and the upper end of main valve core is imbedded with the sealing pad. A movable rigid structure which is formed by the sleeving of the outer pushing rod and the inner pushing rod can move in the upper valve body. The top of the inner pushing rod is provided with the free-running ball. The lower valve body and the upper valve body are sealed to be a sealed chamber. The mechanical leveling valve which is used to control and adjust the height of the object by an air spring supporting can drive the controlled body to move multidimensionally. The utility model has the advantages of simple structure and convenient installation for adopting the sealed end face.
Description
The utility model relates to a kind of universal machine class and is used to control and regulate mechanical type levelling valve by the air-sprung object height.
In the prior mechanical levelling valve, be rigidly connected by adopting mostly between air-sprung controlled body and the levelling valve, make controlled body level of freedom be arranged in a certain direction, so just limited the multi-dimensional movement of controlled body.And, the main valve plug of prior mechanical levelling valve is with spring-loaded and apply sealing force, along with the increase of service time, thereby spring can reduce the performance that elasticity influence levelling valve because of the corrosion of the moisture in fatigue or the pressurized air, as poorly sealed, gas leakage etc.In addition, the spool of prior mechanical levelling valve adopts the cylndrical surface sealing more, and back and forth movement repeatedly can make the sealing variation of spool and outer wall, the working life of having reduced levelling valve.
The purpose of this utility model is to provide a kind of can overcome mechanical type levelling valve not enough in the prior art, and it can not only make controlled body carry out multi-dimensional movement, and performance is good, long service life.
The purpose of this utility model can realize by following measure: the height control lever of levelling valve is made the movable rigid construction of suit, and can in upper valve body, move, can free-moving spheroid one of the top of bar setting-in, adopt the main valve plug of end face seal formula levelling valve, apply sealing force with the main valve plug of pressurized air plunger case support height control valve and to it.
Advantage of the present utility model is:
1. owing to adopt flexibly connecting of sphere contact between controlled body and the levelling valve, make controlled body in a plurality of directions level of freedom be arranged all, controlled body just can carry out multi-dimensional movement like this.
2. the control push rod of levelling valve is made the suit bascule, and not only the height of controlled body can be regulated within the specific limits, and makes the mounting point of levelling valve that certain adjusting freedom can be arranged.
3. the main valve plug of levelling valve adopts end face seal, and good airproof performance has increased working life of levelling valve.
4. apply sealing force with the main valve plug of pressurized air plunger case support height control valve and to it, avoided adopting the problem that spring produced.
Accompanying drawing is a kind of embodiment's of the utility model a structural drawing.
Below in conjunction with accompanying drawing the utility model is described in further detail.
As shown in the figure, levelling valve is by valve body 1, main valve plug 2, sealing gasket 3, upper valve body 4, outer push rod 5, interior push rod 6, spheroid 7 etc. are formed down, the inner chamber of a following valve body 1 and a sealing of upper valve body 4 sealings formation, one end of main valve plug 2 is plunger cylinder with following valve body 1 and connects, the other end end face is embedded with sealing gasket 3, outer push rod 5 and interior push rod 6 usefulness are threaded, and mobilizable rigid construction that cover is dressed up can move in upper valve body 4, and being embedded with on the top of interior push rod 6 can free movable spheroid 7.
Before pneumatic spring was inflated, controlled body was being pressed spheroid 7, and pressure is downward with outer push rod 5 promotion sealing gaskets 3 and main valve plug 2 by interior push rod 6, makes sealing gasket 3 break away from upper valve bodies 4.When the need pneumatic spring is inflated, be P at first with pressure
2Pressurized air in hole 14 feeds the plunger case that is formed by main valve plug 2 and following valve body 1, under the effect of plunger case thrust, force main valve plug 2 and sealing gasket 3 to be close to the lower end surface of outer push rod 5, and outer push rod 5 risings of promotion, make spheroid 7 be close to the controlled body lower surface.Because P in the plunger case
2The pressure that produces is much smaller than the weight of controlled body, and this moment, controlled body still kept original position motionless, and hole 13,15 and 11 is connected state.Be P with pressure subsequently
1Pressurized air (P
1Should be less than P
2) 11,13 enter pneumatic spring and promote controlled body and rise in hole 15 enters down the Seal cage that valve body 1 and upper valve body 4 form and through the hole.At this moment, the pressure that is forced to of spheroid 7 is removed, and under the effect of plunger case thrust, outer push rod 5 and interior push rod 6 rise with controlled body, and the upper end spheroid 7 of outer push rod 5 and interior push rod 6 still is close to controlled body.When the sealing gasket above the main valve plug 23 rose to the valve seat that is adjacent to upper valve body 4, hole 11 was blocked, had just cut off the passage 11,13,15 to the pneumatic spring inflation, and at this moment, the pneumatic spring inflation stops, and controlled body is limited at certain height.
When the big minor swing of the suffered external force of controlled body, because the effect of adapt air spring pressure, thereby controlled body is fluctuateed within a certain height.When the scope that moves upward when controlled body surpasses the error △ that altitude valve allows, push rod 6 in driving under the gas pressure of outer push rod 5 in chamber 9, spheroid 7 moves upward with controlled body, but this moment, the sealing gasket 3 of main valve plug 2 and embedding main valve plug 2 can not be moved upward by the valve seat restriction of upper valve body 4, at this moment, the lower end of outer push rod 5 breaks away from sealing gasket 3, pressurized air in the pneumatic spring is by the aperture 12 of close outer push rod 5 in the upper valve body 4, the center hole 10 of outer push rod 5, preformed hole 8 when outer push rod 5 and interior push rod 6 suits enters atmosphere, air supply in the pneumatic spring is reduced, pressure reduces, and forces controlled body to drop to original position.When controlled body moves downward, controlled body compressing spheroid 7, pressure is downward with outer push rod 5 promotion sealing gaskets 3 and main valve plug 2 by interior push rod 6, makes sealing gasket 3 break away from upper valve bodies 4.Compressed-air actuated passage 11,15 is opened, and pneumatic spring is inflated once more, forces controlled body to rise to original position.As seen, the scope that controlled body moves up or down can only will be adjusted to original position in case surpass automatically within the error △ scope that altitude valve allows.
When desiring to make controlled body to drop to initial position,, under the effect of controlled body deadweight, can depress spool 2 and sealing gasket 3,11,13,15 holes are communicated with by push rod as long as make 14,15 holes connect atmosphere simultaneously, the pneumatic spring exhaust, controlled body falls.
Push rod 6 screws in the degree of depth in the outer push rod 5 in regulating, and can change the height of whole push rod, adjusts the height that controlled body rises with this.
Claims (2)
1, a kind of mechanical type levelling valve that is used to control and regulate by the air-sprung object height, mainly by valve body (1), main valve plug (2), upper valve body (4) etc. are formed down, following valve body (1) and upper valve body (4) sealing form the inner chamber of a sealing, it is characterized in that: a plunger cylinder is formed with following valve body (1) in the lower end of main valve plug (2), the upper end is embedded with sealing gasket (3), outer push rod (5) and interior push rod (6) cover are dressed up mobilizable rigid construction and can be moved in upper valve body (4), and being embedded with on the top of interior push rod (6) can free movable spheroid (7).
2, levelling valve according to claim 1 is characterized in that: outer push rod (5) and interior push rod (6) are with being threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94224138 CN2193949Y (en) | 1994-07-02 | 1994-07-02 | Levelling valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94224138 CN2193949Y (en) | 1994-07-02 | 1994-07-02 | Levelling valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2193949Y true CN2193949Y (en) | 1995-04-05 |
Family
ID=33837636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94224138 Expired - Fee Related CN2193949Y (en) | 1994-07-02 | 1994-07-02 | Levelling valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2193949Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101374683B (en) * | 2006-02-13 | 2011-03-23 | 威伯科有限公司 | Valve device for manually varying the level of an air-sprung vehicle |
| CN103352954A (en) * | 2013-07-16 | 2013-10-16 | 南京浦镇海泰制动设备有限公司 | Variable flow height adjustment valve |
| CN104019257A (en) * | 2014-06-05 | 2014-09-03 | 中国科学院等离子体物理研究所 | Novel vacuum decompression valve |
-
1994
- 1994-07-02 CN CN 94224138 patent/CN2193949Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101374683B (en) * | 2006-02-13 | 2011-03-23 | 威伯科有限公司 | Valve device for manually varying the level of an air-sprung vehicle |
| CN103352954A (en) * | 2013-07-16 | 2013-10-16 | 南京浦镇海泰制动设备有限公司 | Variable flow height adjustment valve |
| CN103352954B (en) * | 2013-07-16 | 2015-12-16 | 南京浦镇海泰制动设备有限公司 | A kind of variable flow height adjustment valve |
| CN104019257A (en) * | 2014-06-05 | 2014-09-03 | 中国科学院等离子体物理研究所 | Novel vacuum decompression valve |
| CN104019257B (en) * | 2014-06-05 | 2017-10-20 | 中国科学院等离子体物理研究所 | A kind of novel evacuated relief valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |