CN2483546Y - Electromagnetic direction changing valve - Google Patents
Electromagnetic direction changing valve Download PDFInfo
- Publication number
- CN2483546Y CN2483546Y CN 01229157 CN01229157U CN2483546Y CN 2483546 Y CN2483546 Y CN 2483546Y CN 01229157 CN01229157 CN 01229157 CN 01229157 U CN01229157 U CN 01229157U CN 2483546 Y CN2483546 Y CN 2483546Y
- Authority
- CN
- China
- Prior art keywords
- oil
- hole
- slide block
- valve core
- spill port
- 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
Links
Images
Landscapes
- Magnetically Actuated Valves (AREA)
Abstract
An electromagnetic reversing valve, mainly comprises a reversing valve body (1) and electromagnetic valves arranged at the two end faces of the reversing valve, the reversing valve body is provided with a valve core slideway (4) and a reversing valve core, the first oil supply hole (12), the second oil supply hole (15), the first oil return hole (10) and the second oil return hole (6) which are arranged at the two sides of the oil inlet (8) are all communicated with the valve core slideway (4), the valve solves the problem that the valve core of prior two position four way reversing valve is being seized easily and the oil returns un-smoothly, the working reliability is high, the valve is mainly used for the reversing of hydraulic oil circuit.
Description
The utility model relates to a kind of valve, the solenoid directional control valve that uses in particularly a kind of hydraulic circuit.
At present, the two-position four-way solenoid directional control valve that people use in hydraulic circuit, mainly form by valve body, the solenoid valve that is arranged on its end and Returnning spring, valve body is provided with spool, spool skidway hole, a coupled logical oil inlet hole, the oil transportation hole of these oil inlet hole both sides and the drainback passage that left and right two ends are connected with spool skidway hole (part of oil circuit) respectively, and the spill port that is arranged on the valve body is connected with drainback passage.Because when certain oil transportation hole is used for oil return, between it and the spill port one section drainback passage is arranged, and one section drainback passage is arranged also between another oil transportation hole and the spill port, some hydraulic oil of each Duan Junhui retains in wherein, therefore have residual pressure, during the oil return of a certain oil transportation hole, the residual pressure that opposite side retains hydraulic oil has just become the resistance of oil return, be back-pressure, so oil cylinder piston easily block when returning motionless; Because Returnning spring uses elasticity meeting variation for a long time, the phenomenon that easily causes the electromagnetic switch valve core to block, be difficult for resetting, functional reliability are difficult to guarantee again.
The purpose of this utility model is, provides a kind of residual pressure (back-pressure), changeover valve core when eliminating oil return can not block motionless solenoid directional control valve.
In order to achieve the above object, the solution that the utility model is taked is, it is made up of commutation valve body and the solenoid valve that is arranged on its end, be characterized in oil inlet hole, the first oil transportation hole, the second oil transportation hole, first spill port, second spill port and changeover valve core that above-mentioned commutation valve body is provided with spool slideway (also as oil transportation channel), is connected with the spool slideway.The first oil transportation hole, the second oil transportation pore size distribution are in the both sides of oil inlet hole, first spill port, second spill port also are distributed in the both sides of oil inlet hole, and both are distributed in the outside in the first oil transportation hole and the second oil transportation hole respectively, be self-commutation valve body left end to right-hand member, first spill port of arranging successively, the first oil transportation hole, oil inlet hole, the second oil transportation hole, the described reversing valve core of second spill port.Be respectively arranged with the oil sealing baffle plate that has the spool slip hole at the two ends of above-mentioned spool slideway. is made of valve core rod (being also referred to as poppet shaft) the first oil sealing slide block and the second oil sealing slide block, and described reversing valve core is one and respectively the spool slideway is in the part between first spill port and the first oil transportation hole and the part that is between the second oil transportation hole and the fuel feed hole blocks (this two places oil circuit envelope is broken) simultaneously at the first two oil sealing slide block that endwisely slips (being the above-mentioned first oil sealing slide block and the second oil sealing slide block), above-mentioned two oil sealing slide blocks are in the spool slideway part between the first oil transportation hole and the fuel feed hole and are in the axial reciprocating slide unit that the part between the second oil transportation hole and second spill port blocks simultaneously after it endwisely slips. Before changeover valve core endwisely slips, hydraulic oil enters spool slideway inner chamber from oil inlet hole, and supplies with oil cylinder by the first oil transportation hole, makes the piston forward jacking, the hydraulic oil of piston opposite side enters in another part inner chamber of spool slideway from the second oil transportation hole, refluxes by second spill port.After changeover valve core endwisely slips to the right, solenoid directional control valve commutates oil circuit, hydraulic oil enters spool slideway inner chamber from oil inlet hole, supply with oil cylinder by the second oil transportation hole, make piston reset backward (returning), the hydraulic oil of the former jacking side of piston enters another place's inner chamber of spool slideway from the first oil transportation hole, and refluxes by first spill port.From said structure, twice oil return all is to reflux by put-through channel, do not had the hydraulic oil that remains, promptly eliminated residual pressure (back-pressure), and oil return is smooth and easy, and oil cylinder piston can not block motionless.The above-mentioned first oil sealing slide block and the second oil sealing slide block are slidingly matched with the spool slideway respectively.Described valve core rod and above-mentioned two oil sealing baffle plates are slidingly matched.The quantity of described solenoid valve is 2, and these 2 solenoid valves are arranged on two ends of above-mentioned commutation valve body, promptly be oppositely arranged, the termination of its solenoid valve core bar separately, respectively with the valve core rod of changeover valve core on corresponding termination hold out against cooperation (relative suppressing) .The advance distance of adjustment and control electromagnetic valve core bar pushes back distance with resetting, and the valve body of can realizing commutating accurately commutates.Thereby replaced the Returnning spring that prior art adopted with solenoid valve, can reach and guarantee that changeover valve core accurately resets, carried out the purpose that oil circuit switches.
In addition,, be preferably in the position that above-mentioned selector valve body is positioned at each oil sealing baffle plate inboard, be respectively arranged with the slide block stop collar so that each oil sealing slide block that block is lived on the valve core rod carries out spacing in order to protect the solenoid valve of both sides.And leave the gap between the central through bore of each slide block stop collar and the valve core rod,, carry out oil return so that make the oil extraction through hole of this gap on jacket wall with the extremely corresponding spill port of hydraulic oil transporting.But each slide block stop collar and corresponding oil sealing baffle plate split are parts independently separately, and block tightly or tighten together and get final product also can adopt the mode that is made into integrative-structure certainly mutually.
Because the utility model has adopted said structure, the commutation two ends of valve body is provided with solenoid valve, do not retain the cavity of residual hydraulic pressure oil in the commutation valve body, hydraulic oil back-pressure when having eliminated oil return, therefore its changeover valve core can not block motionless, and oil return is smooth and easy, also can not influence oil cylinder piston and return, and has oil circuit and switches the advantage accurate, that functional reliability is high.Omitted the oil transportation channel that two-port is connected with the spool slideway owing to its inside again, so it also has advantage simple in structure, that be easy to processing and fabricating.
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is a structural drawing of the present utility model;
Fig. 2 is the structural drawing after changeover valve core of the present utility model shown in Figure 1 slides.
Fig. 3 is a partial structurtes enlarged view of the present utility model shown in Figure 1.
Fig. 4 is a partial structurtes enlarged view of the present utility model shown in Figure 2.
In structural drawing shown in Figure 1 and structural drawing shown in Figure 2, the utility model is that solenoid valve 2, solenoid valve 19 are formed by commutation valve body 1 and 2 solenoid valves, and described solenoid valve 2, solenoid valve 19 are arranged on two ends of the valve body 1 that commutates.Oil inlet hole 8, the first oil transportation hole 12, the second oil transportation hole 15, first spill port 10, second spill port 6 and the changeover valve core that commutation valve body 1 is provided with spool slideway 4 (can be used as the cavity of circulation hydraulic oil), is connected with spool slideway 4, the first oil transportation hole 12, the second oil transportation hole 15 are distributed in the both sides of oil inlet hole 8, first spill port 10, second spill port 6 also are distributed in the both sides of oil inlet hole 8, and both are distributed in the outside in the first oil transportation hole 12 and the second oil transportation hole 15 respectively.In Fig. 1, Fig. 2, above-mentioned two oil transportation pore size distributions are in oil inlet hole 8 both sides, and two spill ports also are distributed in the both sides of oil inlet hole 8.Described changeover valve core is made of valve core rod 5, the first oil sealing slide block 9 and the second oil sealing slide block 7.This changeover valve core is above-mentioned two oil sealing slide blocks before it endwisely slips (i.e. first oil sealing slide blocks 9, the second oil sealing slide block 7) respectively spool slideway 4 being in the part that part between first spill port 10 and the first oil transportation hole 12 and spool slideway 4 be between the second oil transportation hole 15 and the oil inlet hole 8 blocks simultaneously, the part and the spool slideway 4 that spool slideway 4 are between the first oil transportation hole 12 and the oil inlet hole 8 at its above-mentioned two oil sealing slide blocks in back that endwisely slip are in the parts that axially reciprocatingly slide that the part between second spill port 6 and the second oil transportation hole 15 blocks simultaneously, promptly before it endwisely slips, oil inlet hole 8 is connected with the first oil transportation hole 12 by a part of inner chamber of spool slideway 4, to the oil cylinder fuel feeding, the second oil transportation hole 15 is connected with second spill port 6 by another part inner chamber of spool slideway 4, the hydraulic oil of oil cylinder opposite side is back to fuel tank.After changeover valve core slides, oil inlet hole 8 is connected with the second oil transportation hole 15 by spool slideway 4, to the reverse fuel feeding of oil cylinder, piston is return, the first oil transportation hole 12 is connected with first spill port 10 by spool slideway 4, the hydraulic oil of former oil-feed one side of oil cylinder is back to fuel tank, thereby realizes the smooth commutation of oil circuit.Wherein the first oil sealing slide block 9 and the second oil sealing slide block 7 are slidingly matched with spool slideway 4 respectively.At the two ends of spool slideway 4, be respectively arranged with the oil sealing baffle plate that has the spool sliding eye, i.e. oil sealing baffle plate 11 and oil sealing baffle plate 3, the valve core rod 5 of changeover valve core respectively with oil sealing baffle plate 11 and oil sealing baffle plate 3 on the spool sliding eye be slidingly matched.The solenoid valve core bar of above-mentioned solenoid valve 2 and the solenoid valve core bar of solenoid valve 19, respectively with the valve core rod 5 of changeover valve core on corresponding termination hold out against and cooperate.The internal structure of solenoid valve 2 and solenoid valve 19 is known by those of ordinary skill, no longer provides diagram herein.Certainly in use, the diagram before also structure shown in Figure 2 can being slided as changeover valve core, the diagram after structure shown in Figure 1 slided as changeover valve core makes the first oil transportation hole 12, the second oil transportation hole 15 connect corresponding pipeline road and get final product this moment.In Fig. 1, Fig. 2, the port of oil inlet hole 8, the first oil transportation hole 12, the second oil transportation hole 15, first spill port 10, second spill port 6 is respectively arranged with internal thread, be the internal thread 17,13,14,18,16 among Fig. 1, Fig. 2, be used for and corresponding transport pipe spiral marking connection.Certain above-mentioned bind mode also can be the connection of sealing chucking, flange plate connection, welded connection etc., no longer describes in detail herein.Said structure belongs to protection domain of the present utility model, and in addition, the structure that is respectively arranged with the slide block stop collar in described each oil sealing baffle plate inboard also belongs to protection domain of the present utility model.In Fig. 1, Fig. 2 and Fig. 3, figure shown in Figure 4, be positioned at the position of oil sealing baffle plate 11 and oil sealing baffle plate 3 inboards at commutation valve body 1, be respectively arranged with the slide block stop collar 20 and the slide block stop collar 21 of being lived by oil sealing baffle plate 11, oil sealing baffle plate 3 blocks, the aperture of the central through bore of above-mentioned two slide block stop collars all greater than the external diameter of valve core rod 5, all constitutes the Spielpassung structure with valve core rod 5.The aperture of the central through bore of slide block stop collar 20 so that the first oil sealing slide block, 9 blocks can be lived, is carried out spacing less than the external diameter of the first oil sealing slide block 9.The aperture of the central through bore of slide block stop collar 21 so that the second oil sealing slide block, 7 blocks can be lived, is carried out spacing less than the external diameter of the second oil sealing slide block 7.On the jacket wall of each slide block stop collar, be provided with the oil extraction through hole, and the two-port of oil extraction through hole is connected with central through bore separately, corresponding spill port respectively.In addition, oil extraction through hole number average on each slide block stop collar is at least 1, outer wall place at each slide block stop collar, preferably be respectively arranged with the annular oil back chamber that is connected with corresponding spill port, oil extraction through hole on each slide block stop collar all is connected with separately annular oil back chamber, hydraulic oil is back to corresponding spill port place, in fuel tank.No matter whether be provided with annular oil back chamber on each slide block stop collar, all belong to protection domain of the present utility model.In Fig. 3, Fig. 4, slide block stop collar 21 is provided with annular oil back chamber 23 (also can be called annular oil-return groove) and 4 the oil extraction through holes that are connected with second spill port 6, oil extraction through hole 22,24 is wherein 2, one port of above-mentioned each oil extraction through hole is connected with the central through bore of slide block stop collar 21 respectively, being above-mentioned central through bore is connected with above-mentioned each oil extraction through hole with gap 25 between the valve core rod 5, and the outside port of each oil extraction through hole all is connected with annular oil back chamber 23.In Fig. 3, hydraulic oil through the second oil transportation hole 15, spool slideway 4, gap 25, above-mentioned each oil extraction through hole, annular oil back chamber 23 and second spill port 6 be back to fuel tank.In Fig. 4, the second oil sealing slide block 7 is lived by slide block stop collar 21 blocks, makes changeover valve core stop to slide to the right.The structure of slide block stop collar 20 and and first return port 10, the first oil sealing slide block 9 between position relation, matching relationship, identical with Fig. 3, structure shown in Figure 4, no longer provide diagram herein.In addition, also can under the condition that does not change position relation between each oil transportation hole, each spill port and the oil inlet hole, change each oil transportation hole, each spill port or oil inlet hole direction separately according to the needs of reality use.
No matter whether be provided with annular oil back chamber on above-mentioned each slide block stop collar; each slide block stop collar all can be made integrative-structure with the oil sealing baffle plate of a corresponding side; be that each oil sealing baffle plate is an one-piece element with corresponding slide block stop collar, this kind structure also belongs to protection domain of the present utility model.
Claims (5)
1, a kind of solenoid directional control valve, form by commutation valve body [1] and the solenoid valve that is arranged on its end, it is characterized in that, described commutation valve body [1] is provided with spool slideway [4], the oil inlet hole [8] that is connected with spool slideway [4], the first oil transportation hole [12], the second oil transportation hole [15], first spill port [10], second spill port [6] and changeover valve core, the described first oil transportation hole [12], the second oil transportation hole [15] is distributed in the both sides of above-mentioned oil inlet hole [8], described first spill port [10], second spill port [6] is distributed in the both sides of oil inlet hole [8], and both are distributed in the outside in the first oil transportation hole [12] and the second oil transportation hole [15] respectively, two ends at described spool slideway [4], be respectively arranged with the oil sealing baffle plate that has the spool sliding eye, described changeover valve core is by valve core rod [5], the first oil sealing slide block [9] and the second oil sealing slide block [7] constitute, described changeover valve core be one before endwisely slipping above-mentioned two oil sealing slide blocks described spool slideway [4] is in the part between first spill port [10] and the first oil transportation hole [12] respectively and the part that is between the second oil transportation hole [15] and the oil inlet hole [8] blocks simultaneously, its above-mentioned two oil sealing slide blocks in back that endwisely slip spool slideway [4] is in the part between the first oil transportation hole [12] and the oil inlet hole [8] and be in second spill port [6] and the second oil transportation hole [15] between the parts that axially reciprocatingly slide that block simultaneously of part, its the first oil sealing slide block [9] and the second oil sealing slide block [7] are slidingly matched with described spool slideway [4] respectively, described valve core rod [5] is slidingly matched with the spool sliding eye of above-mentioned each oil sealing baffle plate, the quantity of described solenoid valve is 2, above-mentioned 2 solenoid valves are arranged on two ends of described commutation valve body [1], the termination of its solenoid valve core bar separately respectively with described valve core rod 5 on corresponding termination hold out against and cooperate.
2, solenoid directional control valve according to claim 1, it is characterized in that, be positioned at the position of described each oil sealing baffle plate inboard at described commutation valve body [1], be respectively arranged with the slide block stop collar of being lived by corresponding oil sealing baffle plate inner side end block, the aperture of the central through bore of described each slide block stop collar is greater than the external diameter of described valve core rod [5], external diameter less than corresponding oil sealing slide block, constitute the Spielpassung structure with described valve core rod [5], the jacket wall of above-mentioned each slide block stop collar is provided with the oil extraction through hole, and the two-port of described oil extraction through hole is connected with the corresponding spill port of above-mentioned central through bore respectively.
3, solenoid directional control valve according to claim 1, it is characterized in that, outer wall place at each slide block stop collar of described oil sealing baffle plate inboard, be respectively arranged with the annular oil back chamber that is connected with corresponding spill port, the quantity of oil extraction through hole is at least 1 on described each slide block stop collar, and the outside port of each oil extraction through hole all is connected with above-mentioned corresponding annular oil back chamber.
According to claim 2 or 3 described solenoid directional control valves, it is characterized in that 4, described each slide block stop collar is made integrative-structure with corresponding oil sealing baffle plate.
5, solenoid directional control valve according to claim 1 is characterized in that, the port at described oil inlet hole [8], the first oil transportation hole [12], the second oil transportation hole [15], first spill port [10], second spill port [6] is respectively arranged with internal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01229157 CN2483546Y (en) | 2001-06-26 | 2001-06-26 | Electromagnetic direction changing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01229157 CN2483546Y (en) | 2001-06-26 | 2001-06-26 | Electromagnetic direction changing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2483546Y true CN2483546Y (en) | 2002-03-27 |
Family
ID=33644082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01229157 Expired - Fee Related CN2483546Y (en) | 2001-06-26 | 2001-06-26 | Electromagnetic direction changing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2483546Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927073A (en) * | 2012-11-22 | 2013-02-13 | 兰州理工大学 | Hydraulic sliding valve with anti-pollution structure |
| CN110388341A (en) * | 2019-07-22 | 2019-10-29 | 深圳东风汽车有限公司 | The control method that the solenoid valve of hydraulic system commutates without clamping stagnation |
-
2001
- 2001-06-26 CN CN 01229157 patent/CN2483546Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927073A (en) * | 2012-11-22 | 2013-02-13 | 兰州理工大学 | Hydraulic sliding valve with anti-pollution structure |
| CN102927073B (en) * | 2012-11-22 | 2016-12-21 | 兰州理工大学 | Hydraulic efficiency slide valve with antipollution structure |
| CN110388341A (en) * | 2019-07-22 | 2019-10-29 | 深圳东风汽车有限公司 | The control method that the solenoid valve of hydraulic system commutates without clamping stagnation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108252977B (en) | Oil path distribution valve for large-flow hydraulic system | |
| GB2389135A (en) | Tractor with improved valve system | |
| WO2004111509A8 (en) | Three-way poppet valve for work exchanger | |
| CN210317969U (en) | High-low pressure switching valve | |
| CN2483546Y (en) | Electromagnetic direction changing valve | |
| CN104018905B (en) | Become two-stroke engine fluid pressure type distribution switching mechanism | |
| CN201096115Y (en) | Hydraulic combined valve | |
| CN102434510A (en) | Pumping equipment, high-low pressure switching system thereof, pumping system and operation method thereof | |
| CN203239993U (en) | Novel multiway valve | |
| CN2592933Y (en) | Two-way manual hydraulic change valve | |
| CN201513403U (en) | Multistage cylinder integrated control hydraulic valve group | |
| CN201269232Y (en) | Combined multipath reversing solenoid valve | |
| CN207064350U (en) | A kind of differential liftout attachment of injection machine | |
| CN216306820U (en) | Parallel integrated multi-stage one-way valve | |
| GB1121956A (en) | A synchronized hydraulic system | |
| CN105757025B (en) | The big flow three-way switch valve of valve element hollow structure | |
| CN104912863B (en) | Single-valve-core two-position three-way electro-hydraulic change valve applied to hydraulic pile hammer | |
| CN110905876B (en) | Novel hydraulic system for preventing sequential action disorder mechanism | |
| CN202326480U (en) | Pumping equipment, high-low pressure switching system thereof and pumping system | |
| CN214945373U (en) | Single-fluid bidirectional composite three-position four-way reversing valve | |
| CN202580134U (en) | Multi-way valve for full-static-force pile press | |
| CN207406580U (en) | The radiator oil return control system of oil cylinder | |
| CN202203202U (en) | Piling multi-way reversing valve | |
| CN210461216U (en) | Pumping hydraulic system | |
| CN210461217U (en) | High-low pressure switching device and pumping hydraulic system |
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 |