CN201560991U - A digital high accuracy flow divider-combiner - Google Patents
A digital high accuracy flow divider-combiner Download PDFInfo
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- CN201560991U CN201560991U CN2009200948333U CN200920094833U CN201560991U CN 201560991 U CN201560991 U CN 201560991U CN 2009200948333 U CN2009200948333 U CN 2009200948333U CN 200920094833 U CN200920094833 U CN 200920094833U CN 201560991 U CN201560991 U CN 201560991U
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Abstract
The utility model provides a digital high accuracy flow divider-combiner of flow valve. The valve body is provided with parallel inner and outer semi-ring passages; one-time fixed throttling hole in the fixed differential reducing valve or slide valve is a thin wall conical hole; one or two rows of secondary variable throttling hole are provided on the slide valve or piston sleeve; electromagnetic type normally closed digital valve or normally open digital valve are respectively provided in compensation branch passage which is between two branched oil inlet and outlet PA and PB, or two side regulating branched passage on the two valve lid connected with outer semi-ring passage; the utility model cancels error based on the feedback reference of physical quantity difference as pressure flow and displacement of controlled objects, and has advantages of stepless regulation, zero leakage, block avoidance, direct connection with computer interface, computerized effective control for accuracy; the absolute position accuracy amounts to 0.1-0.5 mm. The utility model has novel design, stable working performance, convenient and agile usage, is suitable for generalization.
Description
Technical field: the utility model relates to this Hydraulic Synchronizing Valve of flow divider-combiner in the Flow valve, and mechanical-electrical-hydraulic integration, the digitizing technique that is specifically related to synchronous valve combines and can be by computer-controlled highi degree of accuracy flow divider-combiner.
Background technique: flow divider-combiner is an indispensable element in the synchronous operation of a plurality of actuators of hydraulic control system, and the height of its precision is most important to the control of hydraulic actuator.The patent No. is 93219058.8 disclosed highi degree of accuracy flow divider-combiners, be between the adaptive damping of general passage and spool in valve body two group of branches passages in parallel to be set, corresponding adjusting mechanism, self-adjustment structure, reach the fixed mechanism of fixedly damping and gib head passage, between two total branched bottoms, set up compensation mechanism, make an enough choke pressure drop of fixed orifice generation after fluid passes through appropriate design, make the good feedback of guiding valve and improve precision more effectively for it cooperates better to feed back, also prevent the power of surging simultaneously by guiding valve and the static pressure supporting mechanism that the aperture group structure is set, frictional force and " clamping stagnation " phenomenon take place, carry out the difference of Flow-rate adjustment with this, thereby reach the synchronously driven purpose of control two final controlling element (hydraulic jack and oil hydraulic motor) with the branch road pressure that compensates outer load and cause.It is 1-3% that this valve precision can reach domestic and international standard.The patent No. is that highi degree of accuracy branch combiner valve is then taked the electromagnetic rectification method and the micro-adjusting mechanism set up is adjusted precision in 02280612.1, deficiency is in two branched bottoms in parallel, there is a passage not take above-mentioned design means, be single variable throttling control, make the flow that passes through change, cause the flowed fluctuation that to regulate after the combination big, easily overshoot with load, thereby its precision also can only maintain above-mentioned level and be difficult to and improve, and is still not ideal enough.And what the above divided, the technological scheme of combiner valve is only considered is the improvement of Hydraulic Synchronizing element self, and the error that actuator is produced is not directly controlled and corrected, and inventive concept has certain narrow limitation.Another drawback can't directly be connected with computer interface and use is restricted exactly.
Summary of the invention: the purpose of this utility model is to provide a kind of digital highi degree of accuracy flow divider-combiner, mainly be that precision is still undesirable after solving the adjustment that has branch, combiner valve existence now, technological scheme is only considered the improvement of Hydraulic Synchronizing element self, the error that actuator is produced is not controlled and is corrected, and inventive concept is novel inadequately and can't directly be connected the restricted problem of using that makes with computer interface.
Scheme of the present utility model is as described below: this model utility comprises valve body, end cap, total oil inlet and outlet, branch's oil inlet and outlet, four-way formula Fixed differential reducing valve, collude connection formula guiding valve or in establish piston sleeve, balance spring, the undercut groove of reversing piston, comprise that also electromagnetic type often opens digital valve or electromagnetic type normally-closed digital valve.It is by inside and outside semi-ring passage in parallel is set in valve body, a set fixed orifice on Fixed differential reducing valve or the guiding valve is made as thin-walled shape taper hole, establish 1-2 row secondary variable orifice on guiding valve or the piston sleeve, and be that branched bottom is adjusted or at the two oil inlet and outlet P of branch in both sides on two valve gaps that link with outer semi-ring passage
A, P
BBetween the compensation branch passage in electromagnetic type normally-closed digital valve or electromagnetic type be set respectively often open that digital valve realizes.
This model utility compared with prior art has the following advantages and good effect owing to taked said structure;
1, the utility model is to be the feedback signal benchmark with physical quantity differences such as the pressure flow of controlled device and displacements directly, carry out error concealment, both can control the synchronous function of two actuator's relative velocities by this flow divider-combiner, increased the timely elimination after error occurring again, realization is to the new function of absolute position synchronization control, make absolute positional accuracy reach the 0.1-0.5 millimeter, far surpass the error level of domestic known like product relative accuracy 1-3% and be in leading domestic status;
2, with electromagnetic type normally-closed or often open digital valve and be arranged on the two compensation branch passages of adjusting between branched bottoms or the two branch's oil inlet and outlets, give full play to the electromagnetic type digital valve and have only the characteristics of two kinds of working staties of standard-sized sheet full cut-off, thereby fast and promptly realize from the status adjustment that is up to zero, and do not have leakage, make the utility model be easier to reach the highi degree of accuracy standard;
3, electromagnetic type of the present utility model is often opened or normally closed digital valve, no matter be arranged on and adjust on the branched bottom, also be arranged on the compensation branch passage, all lotus root is closed on a set fixed orifice and this architecture basics of secondary variable orifice on the valve, to form adjusting and the control of secondary damping pressure reduction reaction type.It is little to make it reach the flow adjustment range, and overshoot is little, the standard that precision is high;
4, owing to taking electromagnetic type normally-closed or often opening the digital valve structure, need not D/A converter, just can directly be connected, realize the effective control of computer precision with computer interface.This outstanding feature is that other flow divider-combiner is incomparable;
5, owing to fixed orifice is made as thin-walled shape taper hole and the secondary variable orifice is 1-2 row's a structure, not only processing is simple, precision is easy to control, can in a big way, produce the damping function that adapts, and the on-way resistance of thin-walled shape taper hole is little, viscosity is little and difficult obstruction to flow effect, helps making and regulation and control.Especially it is insensitive to the variation of oil temperature, and high frequency switching perseveration causes under the significant condition of local heating and uses in some zone, more can demonstrate its superiority;
6, this invention also have inventive concept novelty, stable work in work, easy to use flexibly, advantage such as be fit to promote.
Description of drawings:
Fig. 1, Fig. 2 are the utility model is provided with electromagnetic type normally-closed digital valve in adjusting branched bottom structure sectional views;
Fig. 3, Fig. 4 are that the utility model is provided with the structure sectional view that electromagnetic type is often opened digital valve in adjusting branched bottom;
Fig. 5 is the structure sectional view that electromagnetic type normally-closed digital valve is set in the compensation branch passage;
Fig. 6 is provided with the structure sectional view that electromagnetic type is often opened digital valve in the compensation branch passage;
Fig. 7 is the A-A sectional view among Fig. 1-Fig. 4.
Embodiment: by Fig. 1-digital highi degree of accuracy flow divider-combiner shown in Figure 7, its valve body 1 is provided with total oil inlet and outlet P, the oil inlet and outlet P of branch
A, P
BIn the middle of the valve body 1 of Fig. 1-Fig. 4, be arranged with in the oil pocket connection formula of the colluding guiding valve 4 that colludes connection mutually or in establish the piston sleeve 18 of unconnected reversing piston 19, colluding connection formula guiding valve 4 two ends and the eave tile outside is balance spring, in the upper and lower settings of middle oil pocket with guiding valve 4 or in establish piston sleeve 18 two ends of unconnected reversing piston 19 interior semi-ring passage 7 in parallel and outside semi-ring passage 8 and link with total oil inlet and outlet P, on interior semi-ring passage 7, be provided with by upper piston 13, decompression valve pocket 14, lower piston 15, spring 16, the four-way formula Fixed differential reducing valve (see figure 7) 2 that loam cake 17 is formed, a set fixed orifice 5 on the four-way formula Fixed differential reducing valve 2,6 is thin-walled shape taper hole.This fixed orifice 5,6 both can be located on four-way formula Fixed differential reducing valve 2 passages; Also can be arranged on the axial centre position of guiding valve 4 with the exception of this or guiding valve 4 is gone up and played the effect of fixedly damping on the shoulders.This model utility collude also be provided with on connection formula guiding valve 4 or the piston sleeve 18 radially one row or two row variable orifices be referred to as secondary variable orifice 10,12, and on the passage that can link with outer semi-ring passage 8, being provided with two valve gaps 9 with taper fixed orifice 20, the both sides on two valve gaps 9 adjust that to be provided with by the termination in the branched bottom be inverted cone and the middle guiding valve 21 that annular groove is arranged, Returnning spring 22, snap-in spring seat 23, push rod 24, armature 25, cone valve cover for seat 26, the electromagnetic type normally-closed digital valve that magnet 27 is formed is (as Fig. 1, shown in Figure 2) or by valve pocket 28, main valve plug (cone valve) 29, guide's spool 30, armature 37, gland 31, electromagnetic coil 32, the electromagnetic type that spring 33 is formed is often opened digital valve (as Fig. 3, shown in Figure 4).This model utility also can be arranged on the two oil inlet and outlet P of branch by electromagnetic type normally-closed digital valve or electromagnetic type are often opened the digital valve correspondence
A, P
BBetween compensation channel in the structure of (as Fig. 5, shown in Figure 6) constitute.When meanwhile taking this structure, at the two oil inlet and outlet P of branch
A, P
BBetween also be provided with compensation fixed orifice 34,35 in parallel.
The effect of above-described four-way formula Fixed differential reducing valve 2 is when input flow rate changes, making a throttle orifice pressure reduction is definite value, and the secondary variable orifice on guiding valve 4 or the piston sleeve 18 is when the executive component load changes, automatically adjust guiding valve 4 or piston sleeve 18 pressure at two ends and make it equal, it is to be used for adjusting the corresponding error adjustment of making when influencing shunting precision after testing owing to various factors that described electromagnetic type normally-closed digital valve or electromagnetic type are often opened digital valve.
Working procedure of the present utility model is summarized as follows:
(1) shunting operating mode; When pressure oil among Fig. 1-Fig. 4 enter along outlet 3 by the inlet of four-way Fixed differential reducing valve 2 from total oil inlet and outlet P the guiding valve 4 that colludes connection mutually or two unconnected and in establish the middle oil pocket that the piston sleeve 18 of reversing piston 19 forms, make two set in guiding valve 4 or the piston sleeve 18 reversing pistons 19 separate the fixed orifice 5 of (being the branch stream mode) simultaneously total oil inlet and outlet P through interior semi-ring 7,6 enter guiding valve 4 or piston sleeve 18 both sides respectively along interior semi-ring passage 7 and with the outer semi-ring passage 8 of its symmetry, through secondary variable orifice 10,12, by undercut groove 11, the two oil inlet and outlet P of branch unload after the 36 covering throttlings
A, P
BWhen inlet flow rate changes, P
A, P
BWhen two oil inlet and outlet induced pressures were constant, four-way formula Fixed differential reducing valve 2 can be compressed or eject by spring 16 and upper piston 13, and the orifice size (big or little) of adjusting a throttle orifice 5,6 automatically provides setting value pressure reduction, equivalent shunting this moment.When inlet flow rate changes, P
A, P
BWhen induced pressure also changes, as P
APressure raises, though throttle orifice 5,6 increases or the orifice size that reduces is identical, pressure at both sides changes makes P
AWith P
BFlow does not wait, and promptly pressure reduction makes P
ASide sliding valve is moved to the left, and by the increase and decrease of undercut groove 11,36 covering effects, the throttle resistance of secondary variable orifice 10,12 causes the also increase and decrease thereupon of guiding valve 4 or piston sleeve 18 end forces also in increase and decrease, makes P at last
BSide pressure is increased to and P
ATill side equates.This moment P
AAnd P
BIt is equal that flow also recovers.Vice versa.
(2) afflux operating mode; Job order is opposite, and principle is identical.P
A, P
BTwo branch's oil inlet and outlet pressure oil pressure are during greater than total oil inlet and outlet P, make two to collude that set reversing pistons 19 close up (being the afflux state) in the guiding valve 4 that is associated in together or the piston sleeve 18, and the fluid of intermediate cavity flow out from total oil inlet and outlet P along four-way formula Fixed differential reducing valve 2 through exporting 3.At this moment pressure oil is from the two oil inlet and outlet P of branch
A, P
BBy undercut groove 11,36, secondary variable orifice 10,12 enter guiding valve 4 or in establish reversing piston 19 piston sleeve 18 both sides, and flow into the upper piston 13 of four-way formula Fixed differential reducing valve 2 and the upper and lower cavity of lower piston 15 respectively through interior semi-ring passage 7, its actuating pressure difference impels spring 16 to be compressed, fixed orifice 5,6 provides setting value pressure reduction for No. one time, flows out from total oil inlet and outlet P through a fixed orifice 5,6 simultaneously.Finish whole afflux operating mode process.
(3) use is adjusted the interior electromagnetic type normally-closed digital valve of branched bottom or is often opened digital valve and carry out Flow-rate adjustment; When having machining error or the two oil inlet and outlet P of branch at a fixed orifice 5,6
A, P
BPressure changes, and when causing streaming error in the feedback procedure of guiding valve 4 two ends pressure regulation, and electromagnetic type normally-closed digital valve that can link by corresponding end and outer semi-ring passage 8 or electromagnetic type are often opened digital valve and carried out the flow adjustment.Be for example Fig. 1, Fig. 2 with electromagnetic type normally-closed digital valve, when the shunting operating mode, the contrast of the computer after testing in service P of system
BWhen the effluent amount reduced, this computer-chronograph sent instruction and drives P
BSide electromagnet 27, armature 25 adhesives promote push rod 24, and push rod 24 compression reseting springs 22 are opened termination back taper type guiding valve 21, and the working connection fluid that enters outer semi-ring passage 8 flows into P through taper fixed orifice 20
BSide.The precision computer-chronograph that reaches program setting sends till the instruction contract fully, at this moment electromagnet 27 outages, Returnning spring 22 recovers elastic force, by be stuck in snap-in spring seat 23 on the termination inverted cone guiding valve 21 make termination inverted cone guiding valve 21 and cone valve cover for seat 26 tight fit and top pushback pin 24 to return to original position ready for adjustment more next time.This process can instantaneously also can be regulated continuously.The operating mode process is just in time opposite during afflux, just no longer describes in detail herein.When using electromagnetic type often to open digital valve to adjust flow such as Fig. 3, Fig. 4, when the shunting operating mode, when system's contrast of machine testing as calculated in service, if P
BWhen the effluent amount increased, this computer-chronograph sent command control P
B32 energisings of side electromagnetic coil promote armature 37 and guide's spool 30 and pressure spring 33 in the gland 31, close poppet port.Main valve housing 28 upper cavity pressures increase like this, and it is that cone valve 29 cuts out with main valve housing 28 tight applyings that the result makes main valve plug.Thereby make flow adjusted, but this process moment also can be continuous.Afflux operating mode process is just in time opposite, no longer describes in detail herein.The setting of the above taper fixed orifice 20 is in shunting or afflux operating mode, can play the effective measures of avoiding not steady phenomenons such as overshoot is big, fluctuation is big to take place and taking when need are adjusted flow.
(4) use at the two oil inlet and outlet P of branch
A, P
BBetween compensation channel in electromagnetic type normally-closed digital valve or often open digital valve and carry out Flow-rate adjustment; Its Fig. 5, Fig. 6 are provided with the situation that electromagnetic type normally-closed digital valve or electromagnetic type are often opened the digital valve structure respectively for the utility model in compensation channel, because restriction and Fig. 1-Fig. 4 same section structure of map sheet fail to draw in the drawings.Except described electromagnetic type digital valve, at two oil inlet and outlet P
A, P
BBetween passage on also be provided with the fixed orifice 34,35 of two parallel connections.The effect of fixed orifice 35 is when being small flow in system, if the little effluent amount of load is when being less than the big effluent amount of load, the damping hole that fluid constitutes via this fixed orifice 35 enter the little side branched bottom of load carry out flow-compensated, both are equated till and that oil cylinder of hysteresis also can be walked on earth.When flow increases and when changing, the error of flow divider-combiner also increases thereupon, at this moment, another fixed orifice 34 that is in parallel with fixed orifice 35 is by the compensation of opening the big flow error after can changing of electromagnetic type normally-closed digital valve.Make actuator's oil cylinder or oil motor synchronous again.Realization is by the purpose of small flow to the compensation of this variation of big flow.This electromagnetic type normally-closed digital valve is closed again afterwards.If flow system flow is the situation of the variation from big flow to small flow, the structural type that electromagnetic type is often opened digital valve should be set at described compensation channel.When flow from large to small the time, when error occurring in system, this electromagnetic type is often opened digital valve and is closed, and another fixed orifice 34 can carry out functional work compensation as usual.Has very big flexibility.This shows, electromagnetic type normally-closed digital valve or electromagnetic type are often opened digital valve and can be arranged on the adjustment branched bottom, directly flow is regulated, also can be arranged in the compensation channel between two branched bottoms, carry out flow-compensated and error correction, though the position difference acts on different with mechanism, adjustment mode difference, but all can reach same purpose.
Claims (3)
1. a digital highi degree of accuracy flow divider-combiner comprises valve body (1), end cap (9), total oil inlet and outlet P, the oil inlet and outlet P of branch
A, P
BFour-way formula Fixed differential reducing valve (2), collude connection formula guiding valve (4) or in establish the piston sleeve (18) of reversing piston (19), balance spring, undercut groove (11,36), comprise that also electromagnetic type often opens digital valve or electromagnetic type normally-closed digital valve, it is characterized in that: in valve body (1), be provided with in parallel in, outer semi-ring passage (7,8), Fixed differential reducing valve (2) or guiding valve (4) are gone up a set fixed orifice (5,6) be made as thin-walled shape taper hole, on guiding valve (4) or piston sleeve (18), be provided with 1-2 row secondary variable orifice (10,12), and be that branched bottom is adjusted or at the two oil inlet and outlet P of branch in both sides on two valve gaps (9) that link with outer semi-ring passage (8)
A, P
BBetween the compensation branch passage in electromagnetic type normally-closed digital valve is set respectively or electromagnetic type is often opened digital valve.
2. digital highi degree of accuracy flow divider-combiner according to claim 1, it is characterized in that: when electromagnetic type normally-closed digital valve or electromagnetic type being set in branched bottom is adjusted in both sides often opening digital valve, described two valve gaps (9) are provided with taper fixed orifice (20).
3. digital highi degree of accuracy flow divider-combiner according to claim 1 is characterized in that: when electromagnetic type normally-closed digital valve or electromagnetic type being set in the compensation branch passage often opening digital valve, at the two oil inlet and outlet P of branch
A, P
BBetween be provided with compensation fixed orifice (34,35) in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200948333U CN201560991U (en) | 2009-11-25 | 2009-11-25 | A digital high accuracy flow divider-combiner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200948333U CN201560991U (en) | 2009-11-25 | 2009-11-25 | A digital high accuracy flow divider-combiner |
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| Publication Number | Publication Date |
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| CN201560991U true CN201560991U (en) | 2010-08-25 |
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|---|---|---|---|
| CN2009200948333U Expired - Fee Related CN201560991U (en) | 2009-11-25 | 2009-11-25 | A digital high accuracy flow divider-combiner |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387014A (en) * | 2015-12-07 | 2016-03-09 | 浙江华益精密机械股份有限公司 | High-precision flow distributing and collecting valve |
| CN110332167A (en) * | 2019-07-10 | 2019-10-15 | 南通翔骜液压润滑设备有限公司 | High precision flow divider-combiner |
| CN111749946A (en) * | 2020-07-31 | 2020-10-09 | 宁波卓益控制技术有限公司 | Springless high-sensitivity precision synchronizing valve |
-
2009
- 2009-11-25 CN CN2009200948333U patent/CN201560991U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387014A (en) * | 2015-12-07 | 2016-03-09 | 浙江华益精密机械股份有限公司 | High-precision flow distributing and collecting valve |
| CN105387014B (en) * | 2015-12-07 | 2017-09-26 | 浙江华益精密机械股份有限公司 | A kind of high precision flow divider-combiner |
| CN110332167A (en) * | 2019-07-10 | 2019-10-15 | 南通翔骜液压润滑设备有限公司 | High precision flow divider-combiner |
| CN110332167B (en) * | 2019-07-10 | 2020-11-13 | 南通翔骜液压润滑设备有限公司 | High-precision flow dividing and collecting valve |
| CN111749946A (en) * | 2020-07-31 | 2020-10-09 | 宁波卓益控制技术有限公司 | Springless high-sensitivity precision synchronizing valve |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100825 Termination date: 20161125 |
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| CF01 | Termination of patent right due to non-payment of annual fee |