CN205190404U - High accuracy flow divider -combiner - Google Patents
High accuracy flow divider -combiner Download PDFInfo
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- CN205190404U CN205190404U CN201521004539.0U CN201521004539U CN205190404U CN 205190404 U CN205190404 U CN 205190404U CN 201521004539 U CN201521004539 U CN 201521004539U CN 205190404 U CN205190404 U CN 205190404U
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Abstract
The utility model discloses a high accuracy flow divider -combiner has solved current flow divider -combiner poor stability, the low technical problem of reposition of redundant personnel precision, the utility model discloses a high accuracy flow divider -combiner, including the disk seat, the main valve cover, the guiding valve overlaps and sets up the case at guiding valve cover both ends respectively, the disk seat is installed in main valve cover one end, guiding valve cover slidable mounting is in the main valve cover, be equipped with outer main hydraulic fluid port and two outer load hydraulic fluid ports on the main valve jacket wall, outer main hydraulic fluid port is located between two outer load hydraulic fluid ports, main hydraulic fluid port and interior load hydraulic fluid port in the guiding valve is sheathe in and is equipped with, be equipped with the throttling passage of main hydraulic fluid port intercommunication in with on the case, the case is the flow area of reciprocating sliding between with regulation throttling passage and interior load hydraulic fluid port in guiding valve cover, but still be equipped with developments variable damping device between case and the guiding valve cover, but developments variable damping device is used for changing case dynamic characteristic the during reciprocating sliding in the guiding valve cover. The embodiment of the utility model provides a be applied to on multi -cylinder control circuit and the many motors control circuit.
Description
[technical field]
The utility model relates to a kind of high precision flow divider-combiner, belongs to flow divider-combiner technical field.
[background technique]
Flow divider-combiner also claims speed sync valve, is the general name of diverter valve in hydrovalve, combiner valve, one-way distributing valve, unidirectional combiner valve and proportional diverter valve.Synchronous valve is mainly applied in twin-tub and multi-cylinder synchronous hydraulic control system.The method that usual realization is synchronized with the movement is a lot, but wherein to adopt the synchronous control hydraulic system of flow divider-combiner-synchronous valve to have many advantages such as structure is simple, cost is low, easy to manufacture, reliability is strong, thus synchronous valve is widely used in hydraulic system.
Flow divider-combiner be synchronously speed sync, when two oil cylinders or multiple oil cylinder bear different loads respectively, flow divider-combiner still can ensure that it is synchronized with the movement.The effect of diverter valve makes to supply phase homogeneous turbulence (equivalent shunting) by same oil sources to two or more executive component in hydraulic system, or by a certain percentage to two executive component supply flows (proportional diverting), keep synchronously or surely than relation with the speed realizing two executive components.The effect of combiner valve is then from flow or pro rata recirculating oil quantities such as two executive component collections, with realize two executive components speed sync or surely than relation.Flow divider-combiner then has the function of diverter valve and combiner valve concurrently.
Have board-like in the market, plug-in type flow divider-combiner, because plug-in type flow divider-combiner level of integration is higher, take up room little, price is more cheap, therefore generally plug-in type flow divider-combiner is adopted in the market, plug-in type flow distributing and collecting cartridge valve majority of the prior art adopts the centralizing spring with pretightening force, spool adopts hanger type to connect, the two ends of spool are connected with Returnning spring, spool balances by the Returnning spring on both sides and the spring of centering, when external load suddenlys change, the change of induced pressure can cause the imbalance of hydraulic power, with the sharply change of fluid, these increased difficulty and the speed of spool feedback, finally cause system response time excessive, flow overshoot becomes excessive, dynamic flow error is caused to increase gradually, eventually reduce stability and the shunting precision of flow distributing and collecting valve system.
[model utility content]
A kind of high precision flow divider-combiner that problem to be solved in the utility model is to overcome the deficiencies in the prior art and provides, has good stability, feature that shunting precision is high.
For solving the problems of the technologies described above, the utility model adopts following technological scheme:
A kind of high precision flow divider-combiner, comprise valve seat, main valve housing, slide valve buckle and the spool being separately positioned on slide valve buckle two ends, described valve seat is arranged on main valve housing one end, described slide valve buckle is slidably mounted in main valve housing, described main valve jacket wall is provided with outer main hydraulic fluid port and two outer load hydraulic fluid ports, described outer main hydraulic fluid port is between two outer load hydraulic fluid ports, described slide valve buckle is provided with interior main hydraulic fluid port and internal burden hydraulic fluid port, described spool is provided with the throttling passage be communicated with interior main hydraulic fluid port, described spool reciprocatingly slides to regulate the circulation area between throttling passage and internal burden hydraulic fluid port in slide valve buckle, dynamically changeable damping device is also provided with between described spool and slide valve buckle, described dynamically changeable damping device is for changing dynamic characteristic when spool reciprocatingly slides in slide valve buckle.
Spool in high precision flow divider-combiner in the utility model and be also provided with dynamically changeable damping device between slide valve buckle, during the load changing caused under complex working condition, the change of induced pressure causes the imbalance of hydraulic power and the sharply change of fluid, spool has little time action, dynamically changeable damping device promote under the effect of hydraulic difference spool move and the damping force increased when spool reciprocatingly slides in slide valve buckle eliminate the overwhelming majority radio-frequency component, dynamic characteristic when spool reciprocatingly slides in slide valve buckle is changed with this, dynamic characteristic of the prior art refers to: high precision flow divider-combiner is when external load is undergone mutation, system is in dynamic changing process, the characteristic that the shift length of spool changes with hydraulic difference size variation.Dynamic characteristic when dynamically changeable damping device in the utility model reciprocatingly slides in slide valve buckle by changing spool, accelerate system response time, system is allowed to be rendered as underdamping state, system is effectively avoided to occur the phenomenon that overshoot is large, reduce dynamic flow error, thus considerably increase stability and the shunting precision of system works.
First specific embodiments: described main valve jacket wall is provided with through hole and the locating stud be inserted in through hole and floating steel ball, described slide valve buckle outer wall is provided with the groove corresponding with through hole, and described floating steel ball floats to limit the axial reciprocating displacement distance of slide valve buckle in main valve housing bottom locating stud and between groove.Design like this, can ensure that internal burden hydraulic fluid port and outer load hydraulic fluid port remain connected state, when two load oil hydraulic cylinders do not adopt be rigidly connected time, terminal compensating action can be played, with realize two load oil hydraulic cylinders static bidirectional stroke correct.
Second specific embodiments: described dynamically changeable damping device comprises damper rod, with the limiting board of damping hole, first elastic element, second elastic element and the spring seat be fixedly connected on damper rod, described damper rod is fixedly connected on spool also through limiting board, described limiting board is fixed on slide valve buckle and is fitted on damper rod by the first elastic element, described second elastic element is fitted between limiting board and spring seat, two adjustment sections that described damper rod comprises balancing segment and increased gradually to two ends radial width by balancing segment, gap is provided with between described damper rod outer wall and damping hole inwall, described damper rod is provided with the split channel be communicated with gap with throttling passage near one end of spool, described split channel is between limiting board and spool, described damper rod is by reciprocatingly sliding to reduce described gap.Design like this, when load changing, the driving damper rod of the hydraulic difference at spool two ends moves axially to reduce the gap between damper rod outer wall and damping hole inwall, thus increases the damping force of spool in slide valve buckle in reciprocating movement.
3rd specific embodiments: described balancing segment and two arc damping columns regulating section to be connected to form indent.Design like this, can make the outward appearance of damping column more attractive in appearance.
4th specific embodiments: described throttling passage comprises the fixed orifice and variable orifice that are interconnected, described fixed orifice is communicated with interior main hydraulic fluid port, described variable orifice is communicated with internal burden hydraulic fluid port, be provided with flow regulator pieces between described fixed orifice and variable orifice, described flow regulator pieces is provided with aperture.Design like this can meet the flow divider-combiner of different shunt ratio, reduces cost, shortens the construction cycle of product.
5th specific embodiments: described fixed orifice, variable orifice and aperture are thin wall small hole.Design like this, can weaken the receptance of flow divider-combiner to temperature, improves the performance reliability under flow divider-combiner at high temperature operation.
6th specific embodiments: described flow regulator pieces is installed on spool by the first Steel Cable Baffle Ring.Design like this, is convenient to the replacing in later stage and removes and installs.
7th specific embodiments: described variable orifice is butterfly-shaped hole, described butterfly-shaped hole comprises along poppet shaft to the main throttle orifice arranged and several the chromaffin body discharge orifices be interconnected being symmetricly set on main throttle orifice both sides, is successively decreased to both sides gradually by main throttle orifice in the aperture of described chromaffin body discharge orifice.Fine setting characteristic when utilizing aperture to obtain thin tail sheep and the flow area of macropore when obtaining Large travel range, can improve the shunting dynamic characteristic of flow divider-combiner, improve the shunting precision of flow divider-combiner.
8th specific embodiments: described spool circumference uniform intervals is provided with four described variable orifices.Design like this, can make the hydraulic oil in spool be that 90 degree of directions are flowed out, reduce the impact of valve core movement by hydraulic power greatly.
9th specific embodiments: the middle part sidewall of described slide valve buckle is the cambered surface concaved.Design like this, can weaken hydraulic power to the impact of slide valve buckle and improve the synchronization accuracy of flow divider-combiner.
These features of the present utility model and advantage will embodiment below, exposure detailed in accompanying drawing.
[accompanying drawing explanation]
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is the structural representation of high precision flow divider-combiner in the utility model preferred embodiment;
Fig. 2 is the partial enlarged drawing of D in Fig. 1;
Fig. 3 is the partial enlarged drawing of E in Fig. 1;
Fig. 4 is the structural representation of slide valve buckle in the utility model preferred embodiment;
Fig. 5 is the structural representation of spool in the utility model preferred embodiment.
[embodiment]
The technological scheme of accompanying drawing to the utility model embodiment below in conjunction with the utility model embodiment is explained and illustrated, but following embodiment is only preferred embodiment of the present utility model, and not all.Based on the embodiment in mode of execution, those skilled in the art under the prerequisite not making creative work obtain other embodiments, all belong to protection domain of the present utility model.
As shown in Figure 1, the utility model high precision flow divider-combiner preferably executed in example comprises valve seat 1, main valve housing 2, slide valve buckle 3 and two, left and right spool 4, valve seat 1 is arranged on one end of main valve housing 2, slide valve buckle 3 is slidably mounted in main valve housing 2, the sidewall of main valve housing 2 is axially arranged with outer main hydraulic fluid port A and two outer load hydraulic fluid port, two outer load hydraulic fluid ports are respectively outer load hydraulic fluid port B and outer load hydraulic fluid port C, outer main hydraulic fluid port A is between outer load hydraulic fluid port B and outer load hydraulic fluid port C, outer main hydraulic fluid port A is communicated with extraneous fuel tank, outer load hydraulic fluid port B is communicated with the first extraneous oil hydraulic cylinder, outer load hydraulic fluid port C is communicated with the second oil hydraulic cylinder, dynamically changeable damping device is also provided with between spool 4 and slide valve buckle 3, two, left and right spool 4 is connected to the two ends of slide valve buckle 3 respectively by dynamically changeable damping device.
As shown in Figure 4, the sidewall of slide valve buckle 3 is provided with interior main hydraulic fluid port 31 and internal burden hydraulic fluid port, wherein, main hydraulic fluid port 31 is communicated with outer main hydraulic fluid port A, internal burden hydraulic fluid port comprises the left inside load hydraulic fluid port 32 be communicated with outer load hydraulic fluid port B and the right inside load hydraulic fluid port 33 be communicated with outer load hydraulic fluid port C, in order to the pressure uniform making the surface of slide valve buckle 3 be subject to, reduce hydraulic card clamping force and the surface abrasion phenomenon alleviated when slide valve buckle 3 slides in main valve housing 2, the outer wall of slide valve buckle 3 left and right sides is provided with several balancing slits 6 vertically, the cambered surface of middle part sidewall 34 for concaving of slide valve buckle 3, the synchronization accuracy of flow divider-combiner is improved to weaken hydraulic power to the impact of slide valve buckle 3.
As shown in Figure 5, for the spool 4 in left side, spool 4 is provided with the throttling passage be communicated with interior main hydraulic fluid port 31, throttling passage comprises the fixed orifice 40 and variable orifice that are interconnected, fixed orifice 40 is communicated with interior main hydraulic fluid port 31, variable orifice is communicated with internal burden hydraulic fluid port 32, variable orifice is butterfly-shaped hole, described butterfly-shaped hole comprises the main throttle orifice 41 axially arranged along spool 4 and several the chromaffin body discharge orifices 42 be interconnected being symmetricly set on main throttle orifice 41 both sides, main throttle orifice 41 and chromaffin body discharge orifice 42 can be round, oval, polygonal etc., in order to reduce the impact of hydraulic power on spool 4, main throttle orifice 41 in the utility model and chromaffin body discharge orifice 42 adopt ellipse, successively decreased to both sides gradually by main throttle orifice 41 in the aperture of chromaffin body discharge orifice 42, and main throttle orifice 41 is with chromaffin body discharge orifice 42 smooth connection and be communicated with, so can utilize aperture obtain thin tail sheep time fine setting characteristic and macropore obtain Large travel range time flow area, improve the shunting dynamic characteristic of flow divider-combiner, improve the shunting precision of flow divider-combiner.According to the size of the spool 4 in the utility model, two chromaffin body discharge orifices 42 are respectively provided with at the two ends of main throttle orifice 41, be that 90 degree of directions are flowed out in order to the hydraulic oil in spool 4 can be made, weakening spool 4 greatly moves by the impact of hydraulic power, four variable orifices are provided with at the circumferential uniform intervals of spool 4, flow regulator pieces 43 is also provided with between fixed orifice 40 and variable orifice, flow regulator pieces 43 is installed in spool 4 by the first Steel Cable Baffle Ring 44, flow regulator pieces 43 is also provided with several apertures 431, communicate to make fixed orifice 40 and variable orifice, according to actual needs, quantity by changing aperture 431 meets the different shunt ratio of two spools 4 in left and right, reduce cost, shorten the construction cycle of product.The structure of the spool 4 on right side is identical with the spool 4 in left side, and this is no longer going to repeat them.
Fixed orifice 40, variable orifice and aperture 431 in the utility model is thin wall small hole, so designs, and can weaken the receptance of flow divider-combiner to temperature, improves the performance reliability under flow divider-combiner at high temperature operation.The outer wall of spool 4 is also provided with several balancing slits 6, so designs, the pressure uniform that spool 4 surface is subject to can be made, reduce hydraulic card clamping force and the phenomenon alleviating spool 4 surface abrasion, improve the working life of spool 4.
As shown in Fig. 1 to 2, for the dynamically changeable damping device in left side, comprise damper rod 51, limiting board 52, first elastic element 55, second elastic element 53 and spring seat 54, first elastic element 55 and the second elastic element 53 can select spring, the elastomers such as elastic ring, the first elastic element 55 in the utility model and the second elastic element 53 select spring, spring has good elasticity, long service life, limiting board 52 is provided with damping hole 520, one end of damper rod 51 is provided with boss, boss embeds interior with spool 4 and is fixedly connected with spool 4, the other end passes damping hole 520 and is fixedly connected with spring seat 54, wherein spring seat 54 is fixedly mounted on the end of damper rod 51 by the second Steel Cable Baffle Ring, limiting board 52 is installed on the shaft shoulder face of slide valve buckle 3 by the 3rd Steel Cable Baffle Ring, first elastic element 55 is fitted between limiting board 52 and boss, second elastic element 53 is fitted between limiting board 52 and spring seat 54, wherein damper rod 51 comprises balancing segment 510 and two of being increased gradually to two ends radial width D by balancing segment 510 regulate sections 511, adjustment section 511 smooth transition of the balancing segment 510 in the utility model and both sides is connected to form the arcuation body of middle part indent, gap 56 is provided with between the outer wall of damper rod 51 and damping hole 520 inwall, when balancing segment 510 is positioned at damping hole 520, gap 56 now between the outer wall of damper rod 51 and damping hole 520 inwall is maximum, when damper rod about 51 moves axially, gap 56 between the outer wall of damper rod 51 and damping hole 520 inwall reduces gradually, be provided with the split channel 57 be communicated with gap 56 with throttling passage near one end of spool 4 at damper rod 51, the axial blind hole that split channel 57 is communicated with by mutual intersection and radial direction through hole form, wherein the opening of axial blind hole is communicated with variable orifice, radial direction through hole is between boss and limiting board 52, fluid like this enters in the cavity on the left of spool 4 by split channel 57 and gap 56, damper rod 51 reciprocatingly slides to reduce gap 56 under the effect of the first elastic element 55 and the second elastic element 53 in slide valve buckle 3.
As shown in Figs. 3-4, the outer wall of main valve housing 2 is provided with through hole 20, locating stud 21 and floating steel ball 22 is fitted with in through hole 20, the outer wall of slide valve buckle 3 is provided with the groove 35 corresponding with through hole 20, the middle part of its further groove 35 is provided with spherical pit 350, the steel ball 22 that floats to be installed in pit 350 and is installed in through hole 20, the steel ball 22 that floats can fluctuate to make slide valve buckle 3 in main valve housing 2, carry out left and right and move axially bottom locating stud 21 and between pit 350, in order to ensure that slide valve buckle 3 carries out Y-axis in moving process in main valve housing 2, remain connected state between left inside load hydraulic fluid port 32 and outer load hydraulic fluid port B and remain connected state between right inside load hydraulic fluid port 33 and outer load hydraulic fluid port C, the length of the groove 35 in the utility model is L, the maximum distance at two right inside load hydraulic fluid port 33 edges is L1, the maximum distance at two left inside load hydraulic fluid port 32 edges is also L1, and meet L/2≤L1, the structure limiting slide valve buckle 3 axial reciprocating displacement distance in the utility model has processing simply, advantage easy to assembly.
As shown in Figure 1, during assembling flow divider-combiner, first two spools 4 are connected to the two ends of slide valve buckle 3 inside by dynamically changeable damping device, then main valve housing 2 is sleeved on the outside of the slide valve buckle 3 installing spool 4, finally valve seat 1 is sleeved on one end of main valve housing 2, valve seat 1 is connected by wire circlip with main valve housing 2, and main valve housing 2 and valve seat 1 form cavity 12, and the left side of left side spool 4 is closed.The first elastic element 55 in flow divider-combiner in the utility model preferred embodiment and the elasticity coefficient of the second elastic element 53 can ensure variable orifice and being communicated with between outer load hydraulic fluid port B or outer load hydraulic fluid port C in spool 4 moving process.
When the first oil hydraulic cylinder and the second oil hydraulic cylinder adopt be rigidly connected time, under normal state, left and right spool 4 mediates state of equilibrium respectively under respective dynamically changeable damping device effect.
When shunting operating mode, due to the input pressure P of outer main hydraulic fluid port A
0be greater than left side spool 4 pressure P
1with the pressure P of right side spool 4
2, the spool 4 in left side is in separated state, P with the spool 4 on right side
3, P
4be respectively the outlet pressure of outer load hydraulic fluid port B and the outlet pressure of outer load hydraulic fluid port C, if induced pressure P
3>P
4time, the spool 4 of the left and right sides still rests on neutral position, now P instantaneously
0-P
3<P
0-P
4, i.e. P
2>P
1slide valve buckle 3 drives two spools 4 to be moved to the left, when slide valve buckle 3 stops to left movement, the spool 4 in left side will to moving to left, circulation area on spool 4 now between throttling passage and left inside load hydraulic fluid port 32 reduces, namely the aperture of variable orifice and left inside load hydraulic fluid port 32 diminishes, and the flow flowed out from left inside load hydraulic fluid port 32 reduces, P
1rise, the aperture of the variable orifice on the spool 4 on right side and right inside load hydraulic fluid port 33 is constant, P
2constant, until P
1=P
2the spool 4 in left side stops to left movement, due to the spool 4 in left side and the area equation of fixed orifice 40 on the spool 4 on right side, so equal by the flow of fixed orifice 40, and do not change with the change of induced pressure, make two loads that oil hydraulic cylinder connects synchronously increase, ensure the synchronism of flow divider-combiner shunting.
When afflux operating mode, due to P
0be less than P
1and P
2, the spool 4 of the left and right sides is in the state of offseting, if induced pressure P
3>P4, i.e. P
3p
0>P
4-P
0, then P
1>P
2now slide valve buckle 3 drives two spools 4 to move right, when slide valve buckle 3 moves right stopping, the spool 4 in left side moves to right, circulation area on spool 4 now between throttling passage and left inside load hydraulic fluid port 32 reduces, variable orifice on spool 4 namely and the aperture of left inside load hydraulic fluid port 32 diminish, and the flow flowed out from left inside load hydraulic fluid port 32 reduces, P
1diminish, the aperture of the variable orifice on the spool 4 on right side and right inside load hydraulic fluid port 33 increases, and the flow flowed out from right inside load hydraulic fluid port 33 increases, P
2increase, until P
1=P
2spool 4 stop motion of both sides, due to the spool 4 in left side and the area equation of the fixed orifice 40 of the spool 4 on right side, so equal by the flow of fixed orifice 40, and do not change with the change of induced pressure, two loads are synchronously declined, ensures the synchronism of flow divider-combiner afflux.
When two induced pressures are identical, two-way liquid resistance in left and right is identical, and the flow of left and right two-way is identical, and high precision flow divider-combiner is easy to the synchronization control realizing two loads.
Two oil hydraulic cylinders are not when taking to be rigidly connected, and when afflux operating mode, decline very fast and walk on earth when the first oil hydraulic cylinder, because outer load hydraulic fluid port B does not have hydraulic oil to pass through, and now P
2>P
1, the spool 4 on right side drives slide valve buckle 3 to be moved to the left, and in prior art, can close being communicated with between right inside load hydraulic fluid port 33 with outer load hydraulic fluid port C when slide valve buckle 3 moves too much, thus right side oil circuit is closed, and causes the second oil hydraulic cylinder to walk less than low; When shunting operating mode, rising very fast when the first oil hydraulic cylinder and walking on earth, because outer load hydraulic fluid port B does not have hydraulic oil to pass through, now P
1>P
2, the spool 4 on right side drives slide valve buckle 3 to move right, and can close being communicated with between right inside load hydraulic fluid port 33 with outer load hydraulic fluid port C when slide valve buckle 3 moves too much, thus right side oil circuit is closed, and causes the second oil hydraulic cylinder not rise to end of travel.
Although common flow divider-combiner can install relief valve additional to realize the final synchronous of two oil hydraulic cylinders, but integrated degree is not high, cost is high, and the floating steel ball 22 that slide valve buckle 3 in high precision flow divider-combiner in the utility model is arranged departs from pit 350 by upwards floating, slide valve buckle 3 can be moved left and right vertically, when the top edge of groove 35 and the bottom of floating steel ball 22 offset, slide valve buckle 3 stops mobile, slide valve buckle 3 left and the maximum distance that moves right be L/2, and the maximum distance at the maximum distance at two right inside load hydraulic fluid port 33 edges and two left inside load hydraulic fluid port 32 edges is L1, and L/2≤L1, therefore being communicated with and being communicated with between left inside load hydraulic fluid port 32 with outer load hydraulic fluid port B between right inside load hydraulic fluid port 33 with outer load hydraulic fluid port C can be ensured, the second oil hydraulic cylinder is finally made to go to the end of stroke, play the effect that terminal compensates, there is cost low, process simple feature.
When load is undergone mutation, the change of induced pressure can cause the imbalance of hydraulic power and the sharply change of fluid, and these increased difficulty and the speed of spool 4 feedback, finally cause flow divider-combiner to occur that overshoot is bigger than normal, system response time is excessive, and the high precision flow divider-combiner in the utility model, dynamically changeable damping device in parallel on variable orifice, when spool has little time action, because the gap 56 between damper rod 51 and limiting board 52 is annular, therefore radial circumference throttling action can be played, in addition dynamically changeable damping device promotes spool 4 and moves to left or move to right under the effect of spool 4 two ends hydraulic difference, make gap 56 more and more less, thus add spool 4 and to move to left or move to right the damping force be subject in process, to this eliminate HFS during system load sudden change, system is allowed to be rendered as underdamping state, the dynamic characteristic that the shift length that improve spool 4 movement in slide valve buckle 3 changes with the change of hydraulic difference, greatly increase system works stability, also accelerate system response time simultaneously, reduce the overshoot of flow distributing and collecting valve system, thus reduce dynamic flow error, improve shunting precision.Compared with prior art, the high precision flow divider-combiner in the utility model is when tackling load changing, and the stability of system is better, shunting precision high.When needing the shunt ratio regulating both sides oil circuit, can by the quantity of shunt ratio machining small 431 on flow regulator pieces 43, because flow regulator pieces 43 is removably connected with spool 4 by the first Steel Cable Baffle Ring 44, therefore, when needs change shunt ratio, only need change flow regulator pieces 43, with in prior art by compared with processing new spool to regulate, it is low that flow divider-combiner of the present utility model has cost, the advantage such as construction cycle of product is short.
The above; be only embodiment of the present utility model; but protection domain of the present utility model is not limited thereto, is familiar with this those skilled in the art and should be understood that the content that the utility model includes but not limited to accompanying drawing and describes in embodiment above.Any amendment not departing from function and structure principle of the present utility model all will comprise within the scope of the appended claims.
Claims (10)
1. a high precision flow divider-combiner, it is characterized in that: comprise valve seat, main valve housing, slide valve buckle and the spool being separately positioned on slide valve buckle two ends, described valve seat is arranged on main valve housing one end, described slide valve buckle is slidably mounted in main valve housing, described main valve jacket wall is provided with outer main hydraulic fluid port and two outer load hydraulic fluid ports, described outer main hydraulic fluid port is between two outer load hydraulic fluid ports, described slide valve buckle is provided with interior main hydraulic fluid port and internal burden hydraulic fluid port, described spool is provided with the throttling passage be communicated with interior main hydraulic fluid port, described spool reciprocatingly slides to regulate the circulation area between throttling passage and internal burden hydraulic fluid port in slide valve buckle, dynamically changeable damping device is also provided with between described spool and slide valve buckle, described dynamically changeable damping device is for changing dynamic characteristic when spool reciprocatingly slides in slide valve buckle.
2. high precision flow divider-combiner according to claim 1, it is characterized in that: described main valve jacket wall is provided with through hole and the locating stud be inserted in through hole and floating steel ball, described slide valve buckle outer wall is provided with the groove corresponding with through hole, and described floating steel ball floats to limit the axial reciprocating displacement distance of slide valve buckle in main valve housing bottom locating stud and between groove.
3. high precision flow divider-combiner according to claim 1, it is characterized in that: described dynamically changeable damping device comprises damper rod, with the limiting board of damping hole, first elastic element, second elastic element and the spring seat be fixedly connected on damper rod, described damper rod is fixedly connected on spool also through limiting board, described limiting board is fixed on slide valve buckle and is fitted on damper rod by the first elastic element, described second elastic element is fitted between limiting board and spring seat, two adjustment sections that described damper rod comprises balancing segment and increased gradually to two ends radial width by balancing segment, gap is provided with between described damper rod outer wall and damping hole inwall, described damper rod is provided with the split channel be communicated with gap with throttling passage near one end of spool, described split channel is between limiting board and spool, described damper rod is by reciprocatingly sliding to reduce described gap.
4. high precision flow divider-combiner according to claim 3, is characterized in that: described balancing segment and two arc damping columns regulating section to be connected to form indent.
5. high precision flow divider-combiner according to claim 1, it is characterized in that: described throttling passage comprises the fixed orifice and variable orifice that are interconnected, described fixed orifice is communicated with interior main hydraulic fluid port, described variable orifice is communicated with internal burden hydraulic fluid port, be provided with flow regulator pieces between described fixed orifice and variable orifice, described flow regulator pieces is provided with aperture.
6. high precision flow divider-combiner according to claim 5, is characterized in that: described fixed orifice, variable orifice and aperture are thin wall small hole.
7. high precision flow divider-combiner according to claim 5, is characterized in that: described flow regulator pieces is installed on spool by the first Steel Cable Baffle Ring.
8. high precision flow divider-combiner according to claim 5, it is characterized in that: described variable orifice is butterfly-shaped hole, described butterfly-shaped hole comprises along poppet shaft to the main throttle orifice arranged and several the chromaffin body discharge orifices be interconnected being symmetricly set on main throttle orifice both sides, is successively decreased to both sides gradually by main throttle orifice in the aperture of described chromaffin body discharge orifice.
9. high precision flow divider-combiner according to claim 8, is characterized in that: described spool circumference uniform intervals is provided with four described variable orifices.
10. according to the high precision flow divider-combiner one of claim 1 to 9 Suo Shu, it is characterized in that: the middle part sidewall of described slide valve buckle is the cambered surface concaved.
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|---|---|---|---|
| CN201521004539.0U CN205190404U (en) | 2015-12-07 | 2015-12-07 | High accuracy flow divider -combiner |
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|---|---|---|---|
| CN201521004539.0U CN205190404U (en) | 2015-12-07 | 2015-12-07 | 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 |
| CN109142661A (en) * | 2018-08-15 | 2019-01-04 | 吕智 | A kind of flow divider for water quality monitoring system |
| CN109373012A (en) * | 2018-12-03 | 2019-02-22 | 四川理工学院 | A kind of flow shunts valves such as tiny flow quantity |
-
2015
- 2015-12-07 CN CN201521004539.0U patent/CN205190404U/en not_active Withdrawn - After Issue
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 |
| CN109142661A (en) * | 2018-08-15 | 2019-01-04 | 吕智 | A kind of flow divider for water quality monitoring system |
| CN109373012A (en) * | 2018-12-03 | 2019-02-22 | 四川理工学院 | A kind of flow shunts valves such as tiny flow quantity |
| CN109373012B (en) * | 2018-12-03 | 2023-09-15 | 四川理工学院 | Micro-flow equal-flow diverter valve |
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