CN102720669A - Follower rotary valve for plane oil distribution - Google Patents
Follower rotary valve for plane oil distribution Download PDFInfo
- Publication number
- CN102720669A CN102720669A CN2012102211101A CN201210221110A CN102720669A CN 102720669 A CN102720669 A CN 102720669A CN 2012102211101 A CN2012102211101 A CN 2012102211101A CN 201210221110 A CN201210221110 A CN 201210221110A CN 102720669 A CN102720669 A CN 102720669A
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- side plate
- floating side
- oil
- spool
- pressure oil
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- 238000007667 floating Methods 0.000 claims abstract description 81
- 230000001447 compensatory effect Effects 0.000 claims description 40
- 210000004907 gland Anatomy 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 8
- 239000003921 oil Substances 0.000 description 97
- 239000012530 fluid Substances 0.000 description 10
- 230000007246 mechanism Effects 0.000 description 7
- 238000000605 extraction Methods 0.000 description 6
- 230000006872 improvement Effects 0.000 description 4
- 239000010727 cylinder oil Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The invention discloses a follower rotary valve for plane oil distribution. The follower rotary valve comprises a central shaft, an end cover, a valve body and a bottom cover, wherein the end cover, the valve body and the bottom cover are fixedly connected, the central shaft in the valve body is provided with a valve core through a driving key, the two end faces of the valve core are respectively provided with a ring slot and two symmetrically-distributed circular arc distributing grooves, each ring slot is connected with a distributing groove on each of the two end faces through an internal oil channel, the two ring slots are connected with different two distributing grooves, and two distributing grooves connected with the same ring slot are arranged on the two sides of the central shaft; the parts (on both sides of the valve core) of the central shaft are slipperily provided with a floating side plate, and a connecting oil channel and a plurality of connecting oil holes are formed in each floating side plate; the end cover and the bottom cover are respectively provided with an oil port and a plurality of working ports, and the oil port is connected with the ring slots on the adjacent end faces of the valve core respectively through the internal oil channel and the connecting oil channel in an adjacent floating side plate; and an ring-shaped pressure compensation oil cavity is arranged between the end cover and the adjacent floating side plate. The valve disclosed by the invention has the advantages of good followability, high reliability, high oil distribution efficiency and long service life and the like.
Description
Technical field
The present invention relates to a kind of servo-actuated stopcock that is used for hydraulic double-acting piston motor or pump are joined oil.
Background technique
Mostly traditional piston motor (pump) is the single-acting function, both only actings when a direction motion of its piston, and the double-action plunger motor comes and goes two-way work doing owing to have piston, and its specific power is bigger, and superiority is obvious.The double-action plunger motor itself is a relatively research topic in forward position; Because can the reliability of double-action plunger motor (pump) oil distribution mechanism directly influences motor or pump proper functioning and working efficiency; So oil distribution mechanism is a great difficult point wherein reliably.Lot of domestic and international company is studied it, and in joining on the oily mode of double-action plunger motor (pump), the cam following mechanism that mainly contains that has realized drives the guiding valve switching-over and joins that oil, the switching-over of automatically controlled guiding valve are joined oil, servo axis is joined the wet goods technology; But said mechanism all has its bigger shortcoming: guiding valve is joined oily mode, is feasible in theory; But; Because the reliability defective (like easy generation bite, fatigue damage etc.) of guiding valve itself will be brought influence to the reliability of double-action plunger motor (pump), in case one of them guiding valve fault will influence the normal operation and the safety of whole motor (pump) mechanism, and; Because each piston need be equipped with one or two guiding valves; Its cost is also higher, and the leakage of a plurality of guiding valves is accumulated, and efficient is also very low; Though joining oily scheme, servo axis solved some integrity problems that guiding valve is joined oil, owing to can't realize the gap compensation, long term wear can make the gap increase and influence efficient.
Summary of the invention
The objective of the invention is the above-mentioned deficiency to the existing technology existence, provide a kind of plane to join the servo-actuated stopcock of oil, it has, and servo-actuated property is good, reliability is high, join advantages such as oily efficient height, long service life.
For achieving the above object; The servo-actuated stopcock of oil is joined on plane of the present invention, comprises central shaft, the end cap that connects firmly, valve body and bottom, and the inner of central shaft is loaded in end cap, valve body and the bottom through bearing; The outer end of central shaft is provided with the structure of transmitting torque; It is characterized in that being provided with spool through driving key on the central shaft in valve body, on the both ends of the surface of spool, be equipped with two distributing grooves of the circular arc of an annular groove and symmetrical distribution, the per pass annular groove all through internal oil passages respectively be positioned at both ends of the surface on a distributing groove link to each other; The twice annular groove connects two different distributing grooves, and two distributing grooves that link to each other with same annular groove are positioned at the both sides of central shaft; On the central shaft of spool both sides, all slide floating side plate is housed, be equipped with in the every floating side plate and connect oil circuit and be connected oilhole with several, the radial position of the distributing groove on the radial position of connection oilhole and the spool adjacent face is corresponding; On end cap, be provided with filler opening and several actuator ports; Filler opening is connected oil circuit through said in internal oil passages and the adjacent floating side plate and is connected with annular groove on the spool adjacent face; On bottom, be provided with return opening and several actuator ports; Return opening is connected oil circuit through said in internal oil passages and the adjacent floating side plate and is connected with annular groove on the spool adjacent face; A corresponding actuator port is one group on end cap and the bottom, and the two actuator ports on the same group all internal oil passages through separately link to each other with the said oilhole that is connected in the adjacent floating side plate, on the same group two to connect oilholes identical at the phase angle that with the central shaft is the center; Between end cap and adjacent floating side plate, be provided with the compensatory pressure oil pocket of annular, the said oil circuit that is connected communicates in compensatory pressure oil pocket and the adjacent floating side plate, is provided with seal element in the compensatory pressure oil pocket; Two floating side plates all link to each other with end cap or bottom through the radial location part.
Above-mentioned compensatory pressure oil pocket can be located on the end face of end cap, and said seal element is a seal ring of being close to adjacent floating side plate end face, and said radial location part is for connecting the axial locating stud of floating side plate and end cap or bottom; So can realize end face seal, and realize the location, avoid floating side plate to rotate by locating stud;
Above-mentioned compensatory pressure oil pocket also can be located on the two the adjacent face of end cap and adjacent floating side plate, and said seal element is to be located at stuffing box gland in the compensatory pressure oil pocket, to be located at the seal ring between stuffing box gland and end cap and the floating side plate sidewall; Between the both ends of the surface of the internal oil passages of the connection oilhole of every floating side plate and end cap or bottom, be equipped with positioning chamber; Said radial location part is the setting sleeve of being located in the positioning chamber, between setting sleeve and end cap and the floating side plate sidewall, between setting sleeve and bottom and floating side plate sidewall, all also be provided with seal ring; So can realize radial seal, and have bigger nose balance ability, and realize radial location that avoid floating side plate to rotate, positioning chamber also has auxiliary pressure compensation by setting sleeve;
During use; Two actuator ports on the same group link to each other with two hydraulic fluid ports of a double acting oil cylinder; Central shaft is by the external driver device driven rotary; Spool also rotates synchronously, two distributing grooves on the spool both ends of the surface successively with end cap or bottom on each actuator port connect, two actuator ports on the same group simultaneously with the spool both ends of the surface on two distributing grooves of homonymy connect; Realize that oil is joined in servo-actuated as required; Spool rotates a circle, and two chambeies of each two-way cylinder replace oil-feed and oil extraction, realizes two-way work doing; When this device is used for hydraulic motor; The hydraulic oil that feeds from oil-in gets into each two-way cylinder successively; The output shaft of the piston actuated motor of each two-way cylinder rotates; Decompression oil after the acting is discharged through oil return opening; When this device was used for hydraulic pump, the piston that the main shaft of pump drives each two-way cylinder moved back and forth, and two chambeies of oil cylinder replace oil suction and oil extraction; Oil return opening is being shunted in each oil cylinder after as total inlet port oil suction, discharges after converging at oil-in after each oil cylinder oil extraction;
This device is located at distributing groove on the both ends of the surface of spool, is convenient to the installation and the setting of floating side plate and compensatory pressure oil pocket, and overall structure is more simple; The compression area of compensatory pressure oil pocket is slightly larger than the pressure oil cavity area of spool; The end thrust that makes it to produce is pointed to spool all the time, and spool and biside plate can move axially, and axial clearance in the valve body is retained between end cap and the adjacent floating side plate; Make the rotating face between two floating side plates and the spool remain tolerances; Seal element in the internal leakage that can lubricate and can control mechanism, compensatory pressure oil pocket is stopped inside and outside leakage, has improved reliability and has joined oily efficient;
As a further improvement on the present invention, on the both ends of the surface of spool, all also be provided with two equalizing pressure oil grooves of the circular arc of symmetrical distribution, the distributing groove of homonymy links to each other on the balance oil hole of two equalizing pressure oil grooves on the every end face of spool by separately and the other end; The axial hydraulic power that the generation axial hydraulic thrust of equalizing pressure oil groove can balance homonymy distributing groove produces; Make spool both ends of the surface producing balanced forces, avoid producing swing and contact, make valve core rotation smooth and easy with the part of floating side plate; And reduce wearing and tearing greatly, increase the service life;
As further improvement of the present invention, between bottom and adjacent floating side plate, also be provided with the compensatory pressure oil pocket of annular, the said oil circuit that is connected communicates in this compensatory pressure oil pocket and the adjacent floating side plate, is provided with seal element in this compensatory pressure oil pocket;
Compensatory pressure oil pocket between above-mentioned bottom and the adjacent floating side plate can be located on the end face of bottom, and said seal element is a seal ring of being close to adjacent floating side plate end face;
Compensatory pressure oil pocket between above-mentioned bottom and the adjacent floating side plate also can be located on the two the adjacent face of bottom and adjacent floating side plate, and said seal element is to be located at stuffing box gland in the compensatory pressure oil pocket, to be located at the seal ring between stuffing box gland and bottom and the floating side plate sidewall;
So outside the floating side plate of spool both sides, be equipped with the compensatory pressure oil pocket, spool and biside plate can axially two-wayly move, and can realize the exchange of filler opening and return opening, enlarge the using scope of stopcock;
As further improvement of the present invention, be equipped with four road sealing grooves on the both ends of the surface of said spool, be equipped with seal ring in the per pass seal groove, four road sealing grooves lay respectively at the both sides of annular groove, distributing groove and balance pressure oill tank; Can further heighten the sealing of stopcock;
As further improvement of the present invention, be equipped with throttling groove at the two ends of said per pass distributing groove; Can avoid distributing groove when switching on or off, to produce entrap phenomenon, improve the flexibility of valve core rotation with corresponding annular groove;
In sum, the present invention has that servo-actuated property is good, reliability is high, join advantages such as oily efficient height, long service life.
Description of drawings
Fig. 1 is the plan view of the embodiment of the invention one.
Fig. 2 is the C-C sectional view of Fig. 1.
Fig. 3 is the plan view of spool among Fig. 2.
Fig. 4 is the A-A sectional view of Fig. 3.
Fig. 5 is the B-B sectional view of Fig. 3.
Fig. 6 is the plan view of the embodiment of the invention two.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further detailed explanation.
Embodiment one
Extremely shown in Figure 5 like Fig. 1; The servo-actuated stopcock of oil is joined on this embodiment's plane; The end cap 2, valve body 3 and the bottom 4 that comprise central shaft 1, connect firmly through several bolts; The inner of central shaft 1 is loaded in end cap 2, valve body 3 and the bottom 4 through bearing 5, and the outer end of central shaft 1 is provided with the structure of transmitting torques such as keyway, is provided with spool 7 through driving key 6 on the central shaft 1 in valve body 3; On the upper-end surface of spool 7, be provided with two distributing grooves 9,10 of an annular groove 8 and the circular arc that is symmetrically distributed; On the lower end surface of spool 7, be provided with two distributing grooves 12,13 of an annular groove 11 and the circular arc that is symmetrically distributed, two distributing grooves 9 on the both ends of the surface have identical phase angle with 12,10 and 13, are equipped with throttling groove 18 at the two ends of per pass distributing groove; Annular groove 8 through internal oil passages 14 with 15 respectively be positioned at both ends of the surface on distributing groove 9 link to each other with 13; Annular groove 11 through internal oil passages 16 with 17 respectively be positioned at both ends of the surface on distributing groove 10 link to each other with 12; Can find out; Twice annular groove 8 is connected two different distributing grooves with 9, two distributing grooves that link to each other with same annular groove 8 or 9 are positioned at the both sides of central shaft 1; On the both ends of the surface of spool 7, all also be provided with two balance pressure oil grooves 19 of the circular arc of symmetrical distribution, the distributing groove of homonymy links to each other on the balance oil hole 20 of two balance pressure oil grooves 19 on every end face through separately and the other end; Be equipped with four road sealing grooves on the both ends of the surface of said spool 7, be equipped with the both sides that seal ring 32, four road sealing grooves lay respectively at annular groove 8 or 11, distributing groove and balance pressure oill tank 19 in the per pass seal groove;
On the central shaft 1 of spool both sides, all slide floating side plate 21 and 22 are housed, be equipped with in the every floating side plate and connect oil circuit 23 and be connected oilhole 24 with five, the radial position of the distributing groove on the radial position of connection oilhole 24 and the spool adjacent face is corresponding; On end cap 2, be provided with hydraulic fluid port 25 and five actuator ports 26; Hydraulic fluid port 25 is connected oil circuit 23 through said in internal oil passages and the adjacent floating side plate 21 and is connected with annular groove 11 on the spool adjacent face; On bottom 4, be provided with hydraulic fluid port 27 and five actuator ports 28; Hydraulic fluid port 27 is connected oil circuit 23 through said in internal oil passages and the adjacent floating side plate 22 and is connected with annular groove 8 on the spool adjacent face; A corresponding actuator port 26 and 28 is one group on end cap 2 and the bottom 4; Two actuator ports 26 on the same group with 28 all in the internal oil passages through separately and adjacent floating side plate 21 or 22 the corresponding oilholes 24 that are connected link to each other, two connection oilholes 24 on the same group are identical at the phase angle that with the central shaft is the center; At the compensatory pressure oil pocket 29 that is equipped with annular on the end face of the end cap 2 adjacent and on the end face of the bottom 4 adjacent with floating side plate 22 with floating side plate 21; The said oil circuit 23 that is connected communicates in compensatory pressure oil pocket 29 and the adjacent floating side plate; Being provided with seal ring 30, two floating side plates 21,22 of being close to adjacent floating side plate end face in the compensatory pressure oil pocket 29 all links to each other with end cap 2 or bottom 4 through axial locating stud 31;
During use, two actuator ports 26 on the same group link to each other with two hydraulic fluid ports of a double-action oil cylinder with 28, when this device is used for oil hydraulic motor; Hydraulic fluid port 25 on end cap 2 and the bottom 4 or 27, one are as filler opening, and another is then as return opening; Original state; Distributing groove 12 on the spool both ends of the surface and 9 and end cap 2 or bottom 4 on each actuator port 26 and 28 connect, high pressure oil gets into two-way cylinders through filler opening, annular groove 8 or 11, distributing groove 9 or 12, actuator port 28 or 26, the piston actuated motor output shaft of two-way cylinder rotates; Central shaft 1 is driven by motor output shaft and does the servo-actuated rotation simultaneously; Spool 7 also rotates synchronously, two distributing grooves 12 and 13,9 and 10 on the spool both ends of the surface successively with end cap 2 or bottom 4 on each actuator port 26 and 28 connect two distributing grooves 12 and 9 or 13 and 10 connections of homonymy on two actuator ports 26 on the same group and 28 whiles and the spool both ends of the surface; Realize the unimpeded of each two-way cylinder oil circuit; The high pressure oil that feeds from filler opening gets into each two-way cylinder successively, and the piston of each two-way cylinder continues the drive motor output shaft and rotates, and the decompression oil after the acting is discharged through return opening; Realize that oil is joined in servo-actuated as required, guarantee the continuity and the harmony of motor output shaft and cylinder action; Spool 7 rotates a circle, and two chambeies of each two-way cylinder replace oil-feed and oil extraction, realizes two-way work doing;
When this device is used for oil hydraulic pump, hydraulic fluid port 25 or 27, one total inlet ports of conduct on end cap 2 and the bottom 4; Another is then as total oil drain out; The piston that the main shaft of pump drives each two-way cylinder moves back and forth, and two chambeies of oil cylinder replace oil suction and oil extraction, and central shaft 1 is done the servo-actuated rotation by the main shaft drive of pump simultaneously; Spool 7 also rotates synchronously; Two distributing grooves 12 and 13,9 and 10 on the spool both ends of the surface successively with end cap 2 or bottom 4 on each actuator port 26 and 28 connect, two actuator ports 26 on the same group with 28 simultaneously with the spool both ends of the surface on two distributing grooves 12 and 9 or 13 and 10 connections of homonymy, realize that oil is joined in servo-actuated as required; Shunt in each oil cylinder through this device again after total inlet port oil suction, discharge after converging at total oil drain out through this device again after each oil cylinder oil extraction;
This device is located at distributing groove 9,10,12,13 on the both ends of the surface of spool 7; Be convenient to floating side plate 21,, 22 and the installation and the setting of compensatory pressure oil pocket 29; Overall structure is more simple, and the hydraulic fluid port 25 on the end cap 2 can exchange as filler opening and return opening with the hydraulic fluid port 27 on the bottom 4, and the compression area of compensatory pressure oil pocket 29 is slightly larger than the pressure oil cavity area of spool 7; The compensatory pressure oil pocket 29 of one side communicates with filler opening; The end thrust of its generation is pointed to spool 7 all the time, and spool 7 and two floating side plates 21 and 22 can move axially, and the axial clearance in the valve body 3 is retained between end cap 2 and floating side plate 21 or bottom 4 and the floating side plate 22; Make the rotating face between two floating side plates 21,22 and the spool 7 remain tolerances; The internal leakage that can lubricate and can control mechanism, the seal rings 32 in the compensatory pressure oil pocket 29 are stopped inside and outside leakage, have improved reliability and have joined oily efficient; The distributing groove of homonymy links to each other on balance pressure oil groove 19 and the other end; The axial hydraulic power that its generation axial hydraulic thrust can balance homonymy distributing groove produces; Make spool 7 both ends of the surface producing balanced forces, avoid producing the part of swinging and contact, make valve core rotation smooth and easy with floating side plate 21 or 22; And reduce wearing and tearing greatly, increase the service life; Four road seal rings 32 can further be heightened the sealing of stopcock, and the throttling groove 18 at per pass distributing groove two ends can avoid distributing groove when switching on or off, to produce entrap phenomenon with corresponding annular groove, improve the flexibility of valve core rotation.
Embodiment two
As shown in Figure 6; This embodiment and embodiment's one difference is: on the two the adjacent face of end cap 2 and floating side plate 21, on the two adjacent face of bottom 4 and adjacent floating side plate 22, be equipped with compensatory pressure oil pocket 33; In compensatory pressure oil pocket 33, be equipped with stuffing box gland 34; Between stuffing box gland 34 and end cap 2 and floating side plate 21 sidewalls, be provided with seal ring, between stuffing box gland 34 and bottom 4 and floating side plate 22 sidewalls, also be provided with seal ring; Between the both ends of the surface of the internal oil passages of the connection oilhole 24 of every floating side plate 21,22 and end cap 2 or bottom 4, be equipped with positioning chamber; In positioning chamber, be equipped with setting sleeve 35, between setting sleeve 35 and end cap 2 and floating side plate 21 sidewalls, between setting sleeve 35 and bottom 4 and floating side plate 22 sidewalls, all also be provided with seal ring; Other structure is all identical with embodiment one;
This compensatory pressure oil pocket 33 is a radial seal structure; Stuffing box gland 34 is axially having bigger stroke; Has bigger nose balance ability; Even the wear extent of floating side plate 21 or 22 is bigger, the hydraulic oil in the compensatory pressure oil pocket 33 makes the rotating face between two floating side plates 21,22 and the spool 7 remain tolerances, and internal leakage can not change; Setting sleeve 35 is realized radial location, and positioning chamber also has auxiliary pressure compensation.
The invention is not restricted to above-mentioned mode of execution; Quantity like the actuator port on end cap 2 and the bottom 4 also can be provided with more as required; Decision need not to exchange filler opening and return opening like operating mode; Then only need arranged outside compensatory pressure oil pocket, but they all fall into protection scope of the present invention at a floating side plate.
Claims (10)
1. oily servo-actuated stopcock is joined on a plane; Comprise central shaft, the end cap that connects firmly, valve body and bottom; The inner of central shaft is loaded in end cap, valve body and the bottom through bearing, and the outer end of central shaft is provided with the structure of transmitting torque, it is characterized in that being provided with spool through driving key on the central shaft in valve body; On the both ends of the surface of spool, be equipped with two distributing grooves of the circular arc of an annular groove and symmetrical distribution; The per pass annular groove all through internal oil passages respectively be positioned at both ends of the surface on a distributing groove link to each other, the twice annular groove connects two different distributing grooves, two distributing grooves that link to each other with same annular groove are positioned at the both sides of central shaft; On the central shaft of spool both sides, all slide floating side plate is housed, be equipped with in the every floating side plate and connect oil circuit and be connected oilhole with several, the radial position of the distributing groove on the radial position of connection oilhole and the spool adjacent face is corresponding; On end cap, be provided with filler opening and several actuator ports; Filler opening is connected oil circuit through said in internal oil passages and the adjacent floating side plate and is connected with annular groove on the spool adjacent face; On bottom, be provided with return opening and several actuator ports; Return opening is connected oil circuit through said in internal oil passages and the adjacent floating side plate and is connected with annular groove on the spool adjacent face; A corresponding actuator port is one group on end cap and the bottom, and the two actuator ports on the same group all internal oil passages through separately link to each other with the said oilhole that is connected in the adjacent floating side plate, on the same group two to connect oilholes identical at the phase angle that with the central shaft is the center; Between end cap and adjacent floating side plate, be provided with the compensatory pressure oil pocket of annular, the said oil circuit that is connected communicates in compensatory pressure oil pocket and the adjacent floating side plate, is provided with seal element in the compensatory pressure oil pocket; Two floating side plates all link to each other with end cap or bottom through the radial location part.
2. the servo-actuated stopcock of oil is joined on plane as claimed in claim 1; It is characterized in that said compensatory pressure oil pocket is located on the end face of end cap; Said seal element is a seal ring of being close to adjacent floating side plate end face, and said radial location part is for connecting the axial locating stud of floating side plate and end cap or bottom.
3. the servo-actuated stopcock of oil is joined on plane as claimed in claim 1; It is characterized in that said compensatory pressure oil pocket is located on the two the adjacent face of end cap and adjacent floating side plate, said seal element is to be located at stuffing box gland in the compensatory pressure oil pocket, to be located at the seal ring between stuffing box gland and end cap and the floating side plate sidewall; Between the both ends of the surface of the internal oil passages of the connection oilhole of every floating side plate and end cap or bottom, be equipped with positioning chamber; Said radial location part is the setting sleeve of being located in the positioning chamber, between setting sleeve and end cap and the floating side plate sidewall, between setting sleeve and bottom and floating side plate sidewall, all also be provided with seal ring.
4. the servo-actuated stopcock of joining oil like the arbitrary described plane of claim 1 to 3; It is characterized in that on the both ends of the surface of spool, all also being provided with two balance pressure oil grooves of the circular arc of symmetrical distribution, the distributing groove of homonymy links to each other on the balance oil hole of two balance pressure oil grooves on the every end face of spool through separately and the other end.
5. the servo-actuated stopcock of joining oil like the arbitrary described plane of claim 1 to 3; It is characterized in that between bottom and adjacent floating side plate, also being provided with the compensatory pressure oil pocket of annular; The said oil circuit that is connected communicates in this compensatory pressure oil pocket and the adjacent floating side plate, is provided with seal element in this compensatory pressure oil pocket.
6. the servo-actuated stopcock of oil is joined on plane as claimed in claim 5, it is characterized in that the compensatory pressure oil pocket between said bottom and the adjacent floating side plate is located on the end face of bottom, and said seal element is a seal ring of being close to adjacent floating side plate end face.
7. the servo-actuated stopcock of oil is joined on plane as claimed in claim 5; It is characterized in that compensatory pressure oil pocket between said bottom and the adjacent floating side plate is located on the two the adjacent face of bottom and adjacent floating side plate, said seal element is to be located at stuffing box gland in the compensatory pressure oil pocket, to be located at the seal ring between stuffing box gland and bottom and the floating side plate sidewall.
8. the servo-actuated stopcock of joining oil like the arbitrary described plane of claim 5 to 7; It is characterized in that on the both ends of the surface of spool, all also being provided with two balance pressure oil grooves of the circular arc of symmetrical distribution, the distributing groove of homonymy links to each other on the balance oil hole of two balance pressure oil grooves on the every end face of spool through separately and the other end.
9. the servo-actuated stopcock of oil is joined on plane as claimed in claim 8; It is characterized in that being equipped with four road sealing grooves on the both ends of the surface of said spool; Be equipped with seal ring in the per pass seal groove, four road sealing grooves lay respectively at the both sides of annular groove, distributing groove and balance pressure oill tank.
10. the servo-actuated stopcock of oil is joined on plane as claimed in claim 9, it is characterized in that being equipped with throttling groove at the two ends of said per pass distributing groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210221110.1A CN102720669B (en) | 2012-06-29 | 2012-06-29 | Follower rotary valve for plane oil distribution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210221110.1A CN102720669B (en) | 2012-06-29 | 2012-06-29 | Follower rotary valve for plane oil distribution |
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| Publication Number | Publication Date |
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| CN102720669A true CN102720669A (en) | 2012-10-10 |
| CN102720669B CN102720669B (en) | 2015-03-04 |
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| CN201210221110.1A Active CN102720669B (en) | 2012-06-29 | 2012-06-29 | Follower rotary valve for plane oil distribution |
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| CN104344018A (en) * | 2014-10-28 | 2015-02-11 | 华中科技大学 | End face seal rotary valve |
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| CN110578684A (en) * | 2019-08-23 | 2019-12-17 | 浙江大学 | Radial-direction stop pump/motor and flow distribution structure thereof |
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| CN108612697A (en) * | 2018-06-07 | 2018-10-02 | 江苏钧微动力科技有限公司 | Piece-shape type Spool rotating directly drives electrohydraulic servo valve |
| CN110578684A (en) * | 2019-08-23 | 2019-12-17 | 浙江大学 | Radial-direction stop pump/motor and flow distribution structure thereof |
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Effective date of registration: 20201201 Address after: No.8, Qiaoxing Road, Yunxiao County, Zhangzhou City, Fujian Province Patentee after: Yunxiao Food Inspection Center Address before: 646100 Luzhou City, Sichuan province Luzhou District Economic and Technological Development Zone Minxing Road No. 7 Patentee before: LUZHOU TIANFU HYDRAULIC PARTS Co.,Ltd. |
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Application publication date: 20121010 Assignee: Zhangzhou Kaizhang Impression Food Co.,Ltd. Assignor: Yunxiao Food Inspection Center Contract record no.: X2023350000461 Denomination of invention: Follow up rotary valve for flat oil distribution Granted publication date: 20150304 License type: Common License Record date: 20231215 |
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Application publication date: 20121010 Assignee: Yunxiao County Quality Metrology Inspection and Testing Institute Assignor: Yunxiao Food Inspection Center Contract record no.: X2023980052317 Denomination of invention: Follow up rotary valve for flat oil distribution Granted publication date: 20150304 License type: Common License Record date: 20240205 |
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