CN102168644B - Hydraulic drive device - Google Patents
Hydraulic drive device Download PDFInfo
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- CN102168644B CN102168644B CN2011101446177A CN201110144617A CN102168644B CN 102168644 B CN102168644 B CN 102168644B CN 2011101446177 A CN2011101446177 A CN 2011101446177A CN 201110144617 A CN201110144617 A CN 201110144617A CN 102168644 B CN102168644 B CN 102168644B
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Abstract
The invention discloses a hydraulic drive device comprising a hydraulic motor, as well as a three-position two-way reversing valve fixed on the hydraulic motor, wherein the hydraulic motor comprises a stator and a rotor; the three-position two-way reversing valve comprises a valve body; the valve body is internally provided with a valve chest and a valve rod; the valve body is provided with a first driving liquid path, a second driving liquid path, a return liquid path, an inlet liquid path and an outlet liquid path; the return liquid path is close to the second driving liquid path and communicated with the outlet liquid path; the inlet liquid path is communicated with the valve chest; the outer periphery of the valve rod is provided with three annular convex parts; two adjacent annular convex parts form an inlet liquid groove and a return liquid groove in between; the valve rod is provided with a return liquid channel that stretches axially and communicates the return liquid path with the first driving liquid path when the valve rod slides to another station; and the valve body is internally rotatably provided with a reversing device that is linked with the rotor and enables the valve rod to slide back and forth along the valve chest to reverse the liquid paths back and forth. The hydraulic drive device is strong in safety and reliability and simple and convenient in operation.
Description
Technical field
The present invention relates to a kind of drive unit, be meant a kind of usefulness fluid pressure drive device aboard ship especially.
Background technique
First kind of power source for full-automatic back washing filter aboard ship is installed is cylinder, and the linear reciprocating motion through cylinder is realized intermittent rotation by the conversion of ratchet mechanism.After shortcoming was to utilize cylinder to do power source, cooperation everywhere was with to be connected needs very accurate, in case when individual link wearing and tearing being arranged or producing slight angle, cylinder will quit work, and aboard ship pressurized air is very unstable, therefore this driving mode is used seldom; Second kind of power source is motor; Realize continuously rotatablely moving at a slow speed through motor driven gear; Shortcoming need be used the 220V high-tension electricity exactly; Safety coefficient is lower, add motor driving and can and not stop because of wearing and tearing or certain link generation distortion, so reliability in the course of the work is lower.
Summary of the invention
Technical problem to be solved by this invention is: provide that a kind of safety reliability is strong, the fluid pressure drive device of operation simple and convenient.
For solving the problems of the technologies described above; Technological scheme of the present invention is: a kind of fluid pressure drive device, comprise oil hydraulic motor, and said oil hydraulic motor comprises stator and the rotor that is arranged in the stator; Be provided with the liquid barrier of two symmetries in the said stator; Rotor is provided with the blade of two symmetries, and two liquid barriers and two blades are divided into four liquid storage cylinders with the cavity in the stator, and two liquid storage cylinders at diagonal angle communicate through being arranged on epitrochanterian infusion channel respectively; Said fluid pressure drive device also comprises three two logical selector valves that are fixed on the said oil hydraulic motor; Three two logical selector valves comprise valve body, are provided with valve pocket in the said valve body, are slidingly fitted with valve rod in the said valve pocket; Said valve body is provided with first and drives liquid road, the second driving liquid road, go back to liquid liquid road, feed liquor road and fluid road; The position on said time liquid liquid road drives the liquid road near second and is communicated with the fluid road, and said feed liquor road is communicated with valve pocket, and said first drives liquid road and the second driving liquid road is communicated with valve pocket respectively with adjacent two liquid storage cylinders in four liquid storage cylinders; The outer circumferential face of said valve rod is provided with three annular protrusions; Form a feed liquor groove and one between adjacent two annular protrusions and return the liquid groove, said feed liquor groove drives liquid road or second and drives the liquid road and is communicated with first respectively when valve rod slides into two different stations, and said time liquid groove will return the liquid liquid road and the second driving liquid road connection in valve stem slides during to one of them station; Said valve rod is provided with and will goes back to liquid liquid road and first during to another station in valve stem slides and drive the axially extended back flow channel that the liquid road is communicated with, and is rotatablely equipped with the rotor interlock in the said valve body and valve rod is reciprocatingly slided along valve pocket and the liquid road is carried out the reversing arrangement of reciprocating reversing.
As a kind of preferred scheme; Said reversing arrangement comprises that the switching-over chamber, the rotation that are arranged in the valve body are installed in the valve body and the switching-over joint that is connected with rotor; Said switching-over joint will commutate the chamber be separated into first the switching-over half chamber and second the switching-over half chamber; Said switching-over joint is provided with when positive counter deflexion the switching-over liquid road that feed liquor road and first switching-over half chamber or second switching-over, half chamber are communicated with; Said first switching-over half chamber and second switching-over, half chamber are positioned at two application of force chamber portions that the valve rod two ends can promote valve stem slides through two corresponding connections in application of force liquid road with said valve pocket respectively, and said fluid road is communicated with the chamber of commutating.
As a kind of preferred scheme, the end clamping of the rotor shaft of said switching-over joint and rotor, said rotor shaft is provided with draw-in groove, and said switching-over joint is provided with the fixture block that snaps in said draw-in groove.
As a kind of preferred scheme, described switching-over liquid road comprises the first separatory hole, the second separatory hole and the switching-over inlet opening that radially is arranged on the said switching-over joint, and the said switching-over inlet opening and the first separatory hole, the second separatory hole all are communicated with.
As a kind of preferred scheme; Be provided with two linings that are positioned at said switching-over joint two ends in the said valve body; Said switching-over joint rotates and is installed between two linings; Said switching-over joint is provided with the axial hole that is communicated with two lining inner chambers, is communicated with through auxiliary liquid road between said lining inner chamber and the valve pocket.
After having adopted technique scheme, effect of the present invention is: owing to adopt fluid pressure drive device, and therefore; When initial station, stem position is second to drive the liquid road and is communicated with the feed liquor groove, first drives the liquid road and be communicated with time liquid liquid road through back flow channel, to feed liquor road feeding driving liquid; Drive liquid and enter in the valve pocket, drive liquid and enter in two liquid storage cylinders that communicate with it through the second driving liquid road, then drive rotor deflection because its internal pressure increases from the feed liquor groove from the feed liquor road; Rotor deflection drives the reversing arrangement interlock simultaneously, and reversing arrangement makes it drive liquid the switching-over of liquid road and promotes valve rod to another station slip, like this; Valve stem slides is communicated with the feed liquor groove gradually with the first driving liquid road, the second driving liquid road is communicated with gradually, at this moment through returning the liquid groove with time liquid liquid road; Drive liquid and drive the liquid road from first and enter in two other liquid storage cylinder and its pressure is increased and drive the reverse deflection of rotor, thereby the blade extruding drives two liquid storage cylinders that the liquid road communicates with second, make driving liquid in it drive from second that the liquid road enters into back the liquid groove and then discharge from the fluid road on warp time liquid liquid road; And the reverse deflection of rotor drives the reversing arrangement interlock, thereby makes the switching-over of liquid road, at this moment; Driving the liquid actuate valve stem slides to initial station; Make the first driving liquid road drive the liquid road with back flow channel connection, second gradually and be communicated with the feed liquor groove, the driving liquid in two liquid storage cylinders that the while and the first driving liquid road are communicated with flow into back the liquid groove from back flow channel, and then flow out from the fluid road on warp time liquid liquid road; So repeatedly; Just make rotor back and forth deflection back and forth, thereby realize the driving to the full-automatic back washing filter, whole process only need feed driving liquid and can accomplish automatically; The operation simple and convenient, the fluid pressure drive device safety reliability is strong.
Owing to be provided with two linings that are positioned at said switching-over joint two ends in the said valve body, said switching-over joint rotates and is installed between two linings again, and said switching-over joint is provided with the axial hole that is communicated with two lining inner chambers; Be communicated with through auxiliary liquid road between said lining inner chamber and the valve pocket, therefore, through auxiliary liquid road; Drive liquid and just can enter into the lining inner chamber from valve pocket; Thereby the deflection that makes the switching-over joint is in one drives the pendular ring border, and its deflection is rotated flexibly, and reliability strengthens.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 is the plan view of the embodiment of the invention;
Fig. 2 is that the present invention removes three two plan views behind the logical selector valve;
Fig. 3 is the sectional view of Fig. 1 on the A-A direction;
Fig. 4 is that Fig. 1 is the sectional view on the B-B direction;
Fig. 5 is the scheme of installation of stator and rotor;
Fig. 6 is the sectional view of Fig. 5 on the C-C direction;
Fig. 7 is the plan view of three two logical selector valves;
Fig. 8 is the sectional view of Fig. 7 on the D-D direction;
Fig. 9 is the sectional view of Fig. 7 on the E-E direction;
Figure 10 is the schematic representation of Fig. 7 on the F direction;
Figure 11 is the explosive view of three two logical selector valves of the embodiment of the invention;
Figure 12 is a part of exploded perspective view of embodiment of the invention oil hydraulic motor;
Figure 13 is the exploded perspective view of another part of embodiment of the invention oil hydraulic motor;
In the accompanying drawing: 1. oil hydraulic motor; 11. motor loam cake; 12. motor lower cover; 13. stator; 131. first liquid storage cylinder; 132. second liquid storage cylinder; 133. the 3rd liquid storage cylinder; 134. the 4th liquid storage cylinder; 135. liquid barrier; 14. rotor; 141. rotor shaft; 1411. draw-in groove; 142. blade; 143. infusion channel; 2. three two lead to selector valves; 21. feed liquor road; 22. fluid road; 23. valve body; 231. valve pocket; 2311. first application of force chamber portion; 2312. second application of force chamber portion; 232. valve rod; 2321. feed liquor groove; 2322. return the liquid groove; 2323. back flow channel; 2324. annular protrusion; 233. first drives the liquid road; 234. second drives the liquid road; 235. screw plug; 24. valve gap; 25 reversing arrangements; 251. switching-over joint; 2511. switching-over inlet opening; 2512. the second separatory hole; 2513. the first separatory hole; 2514. fixture block; 2515. axial hole; 252. lining; 26. switching-over chamber; 261. first switching-over, half chamber; 262. second switching-over, half chamber; 27. first application of force liquid road; 28. second application of force liquid road; 29. go back to liquid liquid road; 210. auxiliary liquid road; 211 pads.
Embodiment
Through specific embodiment the present invention is made further detailed description below.
A kind of fluid pressure drive device; Extremely shown in Figure 13 like Fig. 1; It comprises oil hydraulic motor 1, and said oil hydraulic motor 1 comprises stator 13 and the rotor 14 that is arranged in the stator 13, and said stator 13 top and bottom are fixing motor loam cake 11 and motor lower cover 12 respectively; Between motor loam cake 11 and motor lower cover 12, said rotor 14 is rotatably installed in the stator 13 and through seal ring through bearing and is sealed and matched said stator 13 through bolt.Be provided with the liquid barrier 135 of two symmetries in the said stator 13; Rotor 14 is provided with the blade 142 of two symmetries; Two liquid barriers 135 and two blades 142 are divided into four liquid storage cylinders with the cavitys in the stator 13, and are as shown in Figure 4, by counterclockwise be called first liquid storage cylinder 131 respectively, second liquid storage cylinder the 132, the 3rd goes out sap cavity and the 4th liquid storage cylinder 134; Two liquid storage cylinders at diagonal angle communicate through the infusion channel 143 that is arranged on the rotor 14 respectively; That is, first liquid storage cylinder 131 and the 3rd liquid storage cylinder 133 are communicated with through an infusion channel 143, are communicated with through another infusion channel 143 between second liquid storage cylinder 132 and the 4th liquid storage cylinder 134.
Said fluid pressure drive device also comprises three two logical selector valves 2 that are fixed on the said oil hydraulic motor 1; Three two logical selector valves 2 comprise valve body 23; Valve gap 24 is installed on the said valve body 23; Be provided with pad 211 between valve gap 24 and the valve body 23, said valve body 23 is provided with pad 211 through on the motor loam cake 11 that is bolted to oil hydraulic motor 1 between said valve body 23 and the motor loam cake 11.Be provided with valve pocket 231 in the said valve body 23; The two ends of said valve pocket 231 are through screw plug 235 spacing and sealings; Be slidingly fitted with valve rod 232 in the said valve pocket 231; Like Fig. 3, shown in Figure 7, be in two ends of valve rod 232 and valve pocket 231 positions between the screw plug 235 and be called first application of force chamber portion 2311 and second application of force chamber portion 2312 respectively; Said valve body 23 is provided with the first driving liquid road 233, second and drives liquid road 234, goes back to liquid liquid road 29, feed liquor road 21 and fluid road 22; The position on said time liquid liquid road 29 drives liquid road 234 near second and is communicated with fluid road 22; Said feed liquor road 21 is communicated with valve pocket 231; Said first drives liquid road 233 and the second driving liquid road 234 is communicated with valve pocket 231 respectively with adjacent two liquid storage cylinders in four liquid storage cylinders; Promptly; First drives liquid road 233 and 132,134 connections of the second, the 4th liquid storage cylinder; Second drives liquid road 234 and 131,133 connections of the first, the 3rd liquid storage cylinder, and the outer circumferential face of said valve rod 232 is provided with three annular protrusions 2324, forms a feed liquor groove 2321 and one time liquid groove 2322 between adjacent two annular protrusions 2324; Said feed liquor groove 2321 when valve rod 232 slides into two different stations, drives liquid road 233 with first respectively or the second driving liquid road 234 is communicated with; Like Fig. 4, shown in Figure 8, said time liquid groove 2322 will go back to liquid liquid road 29 and second and drive 234 connections of liquid road when valve rod 232 slides into one of them station, and said valve rod 232 is provided with will return the axially extended back flow channel 2323 that liquid liquid road 29 and first drives 233 connections of liquid road when valve rod 232 slides into another station.That is to say that when valve rod 232 slided into one of them station first driving liquid road 233 with 2321 connections of feed liquor groove, second 234 on the driving liquid road was passed through back liquid groove 2322 and is communicated with time liquid liquid road 29; When valve rod 232 slides into another station second driving liquid road 234 with 2321 connections of feed liquor groove; First drives 233 on liquid road passes through back flow channel 2323 and returns liquid groove 2322 to be communicated with time liquid liquid road 29, is rotatablely equipped with rotor 14 interlocks in the said valve body 23 and valve rod 232 is reciprocatingly slided along valve pocket 231 and the liquid road is carried out the reversing arrangement 25 of reciprocating reversing.
Said reversing arrangement 25 comprises that the switching-over chamber 26, the rotation that are arranged in the valve body 23 are installed in the valve body 23 and the switching-over joint 251 that is connected with rotor 14; Be provided with two linings 252 that are positioned at said switching-over joint 251 two ends in the said valve body 23; Said switching-over joint 251 rotates and is installed between two linings 252; The end clamping of the rotor shaft 141 of said switching-over joint 251 and rotor 14; Said rotor shaft 141 is provided with draw-in groove 1411, and said switching-over joint 251 is provided with the fixture block 1514 that snaps in said draw-in groove 1411, and said fixture block 1514 is a cuboid shape fixture block 1514; Snap in the draw-in groove 1411 through fixture block 1514, realize that rotor 14 drives 251 deflections of switching-over joint when deflection.Said switching-over joint 251 chamber 26 of will commutating is separated into half chamber 262 of commutating, first switching-over, half chamber 261 and second; Said switching-over joint 251 is provided with when positive counter deflexion the switching-over liquid road of feed liquor road 21 with first switching-over half chamber 261 or second switching-over half chamber, 262 connections; Described switching-over liquid road comprises the first separatory hole 2513, the second separatory hole 2512 and the switching-over inlet opening 2511 that radially is arranged on the said switching-over joint 251; Said switching-over inlet opening 2511 is communicated with feed liquor road 21; Said switching-over inlet opening 2511 and the first separatory hole 2513, the second separatory hole 2512 all are communicated with; Said first switching-over half chamber 261 and second switching-over, half chamber 262 are positioned at valve rod 232 two ends with said valve pocket 231 respectively and can promote two application of force chamber portions that valve rod 232 slides and pass through two corresponding connections in application of force liquid road; Promptly; First application of force liquid road 27 is passed through in first switching-over, half chamber 261 and first application of force chamber portion 2311 is communicated with, and said second switching-over half chamber 262 is communicated with through second application of force liquid road 28 and second application of force chamber portion 2312, and said fluid road 22 is communicated with time liquid liquid road 29.When rotor 14 counterclockwise deflections; When driving the reverse deflection of switching-over joint 251; The said first separatory hole 2513 is communicated with first switching-over, half chamber 261 with feed liquor road 21; Driving liquid flows into from the first separatory hole 2513, enters into first application of force chamber portion, 2311 interior actuate valve stem 232 through first application of force liquid road 27 and slides into a station, and the slip of valve rod 232 then makes the first driving liquid road 233 and feed liquor groove 2321 connections, second drive liquid road 234 and 2322 connections of time liquid groove; When the clockwise deflection of rotor 14; The second separatory hole 2512 is communicated with said second switching-over half chamber 262 with feed liquor road 21; Driving liquid flows into from the second separatory hole 2512; Enter into second application of force chamber portion, 2312 interior actuate valve stem 232 reverse slide to another station through second application of force liquid road 28, the second driving liquid road 234 is communicated with 2321 connections of feed liquor groove, the first driving liquid road 233 and back flow channel 2323, and then is communicated with time liquid groove 2322.
For make the switching-over joint 251 rotation more flexible; Safety reliability is more stable; Said switching-over joint 251 is provided with the axial hole 2515 that is communicated with two lining 252 inner chambers, is communicated with through auxiliary liquid road 210 between said lining 252 inner chambers and the valve pocket 231, drives liquid like this and just can enter into lining 252 inner chambers from valve pocket 231; Thereby make the deflection of switching-over joint 251 be in a liquid environment; Not only can avoid the commutating phenomenon of leakage of joint 251 also makes switching-over joint 251 rotate flexibly, and is safe and reliable.
Working principle of the present invention is: at first, the initial station of valve rod 232 is that the first driving liquid road 233 is communicated with back flow channel 2323, and second drives liquid road 234 and 2321 connections of feed liquor groove; Feed driving liquid to feed liquor road 21, drive liquid and enter in the valve pocket 231, drive liquid road 234 through second then and enter into first liquid storage cylinder 131 and the 3rd liquid storage cylinder 133 from feed liquor road 21; At this moment, the pressure in first liquid storage cylinder 131 and the 3rd liquid storage cylinder 133 increases, and promotes blade 142 and makes rotor 14 counterclockwise deflections; The second, in the 4th liquid storage cylinder 132,134 if any drive liquid then through first drive liquid road 233, back flow channel 2323, go back to liquid liquid road 29, fluid road 22 discharges, and rotor 14 drives the 251 counterclockwise deflections of switching-over joints, and the first separatory hole 2513 is communicated with first switching-over, half chamber 261 and feed liquor road 21 gradually; Drive liquid this moment and enter into first switching-over, half chamber 261, the hydraulic pressure that enters in 2311, the first application of force chamber portions 2311 of first application of force chamber portion through first application of force liquid road 27 increases; Actuate valve stem 232 is slided to another station, and at this moment, feed liquor groove 2321 is communicated with the first driving liquid road 233 gradually; Pass through back liquid groove 2322 and drive liquid road 234 and be communicated with second gradually and go back to liquid liquid road 29, at this moment, driving liquid enters in second liquid storage cylinder 132 and the 4th liquid storage cylinder 134 from the first driving liquid road 233; Hydraulic pressure in second liquid storage cylinder 132 and the 4th liquid storage cylinder 134 increase and rotor 14 clockwise deflections when promoting blade 142, and at this moment, blade 142 extruding first liquid storage cylinders 131 make it enter into back liquid groove 2322 from the second driving liquid road 234 with the 3rd liquid storage cylinder 133 interior driving liquid; And pass through back liquid liquid road 29 22 discharges from the fluid road, at this moment, the clockwise deflection of rotor 14 drives the 251 clockwise deflections of switching-over joint; The second separatory hole 2512 is communicated with second switching-over, half chamber 262 with feed liquor road 21 gradually; Drive liquid this moment and enter into second switching-over, half chamber 262, the hydraulic pressure that enters in 2312, the second application of force chamber portions 2312 of second application of force chamber portion through second application of force liquid road 28 increases; Promoting valve rod 232 slides to initial station; At this moment, feed liquor groove 2321 is communicated with the second driving liquid road 234 gradually, and the first driving liquid road 233 is communicated with back flow channel 2323 gradually; Also just be communicated with time liquid liquid road 29 gradually; Like this so reciprocal, this fluid pressure drive device is realized reciprocal yaw motion through three two logical selector valves 2 and switching-over joint 251 fully, has avoided the existence of various unreliable factors fully; Improve the flexibility and the Security of fluid pressure drive device more, satisfied the power demand of full-automatic back washing filter.
Claims (5)
1. fluid pressure drive device; Comprise oil hydraulic motor; Said oil hydraulic motor comprises stator and the rotor that is arranged in the stator, and it is characterized in that: be provided with the liquid barrier of two symmetries in the said stator, rotor is provided with the blade of two symmetries; Two liquid barriers and two blades are divided into four liquid storage cylinders with the cavity in the stator; Two liquid storage cylinders at diagonal angle communicate through being arranged on epitrochanterian infusion channel respectively, and said fluid pressure drive device also comprises three two logical selector valves that are fixed on the said oil hydraulic motor, and three two logical selector valves comprise valve body; Be provided with valve pocket in the said valve body; Be slidingly fitted with valve rod in the said valve pocket, said valve body is provided with first and drives liquid road, the second driving liquid road, go back to liquid liquid road, feed liquor road and fluid road, and the position on said time liquid liquid road drives the liquid road near second and is communicated with the fluid road; Said feed liquor road and valve pocket are communicated with; Said first drives liquid road and second drives the liquid road and respectively valve pocket is communicated with adjacent two liquid storage cylinders in four liquid storage cylinders, and the outer circumferential face of said valve rod is provided with three annular protrusions, feed liquor groove of formation and one time liquid groove between adjacent two annular protrusions; Said feed liquor groove when valve rod slides into two different stations, drives the liquid road with first respectively or the second driving liquid road is communicated with; Said time liquid groove will go back to liquid liquid road and second during to one of them station in valve stem slides and drive the liquid road and be communicated with, and said valve rod is provided with and will goes back to liquid liquid road and first in valve stem slides during to another station and drive the axially extended back flow channel that the liquid road is communicated with, and being rotatablely equipped with in the said valve body links and valve rod is reciprocatingly slided along valve pocket with rotor carries out the reversing arrangement of reciprocating reversing to the liquid road.
2. fluid pressure drive device as claimed in claim 1; It is characterized in that: said reversing arrangement comprises that the switching-over chamber, the rotation that are arranged in the valve body are installed in the valve body and the switching-over joint that is connected with rotor; Said switching-over joint will commutate the chamber be separated into first the switching-over half chamber and second the switching-over half chamber; Said switching-over joint is provided with when positive counter deflexion the switching-over liquid road that feed liquor road and first switching-over half chamber or second switching-over, half chamber are communicated with; Said first switching-over half chamber and second switching-over, half chamber are positioned at two application of force chamber portions that the valve rod two ends can promote valve stem slides through two corresponding connections in application of force liquid road with said valve pocket respectively, and said fluid road is communicated with the chamber of commutating.
3. fluid pressure drive device as claimed in claim 2 is characterized in that: the end clamping of the rotor shaft of said switching-over joint and rotor, and said rotor shaft is provided with draw-in groove, and said switching-over joint is provided with the fixture block that snaps in said draw-in groove.
4. fluid pressure drive device as claimed in claim 3; It is characterized in that: described switching-over liquid road comprises the first separatory hole, the second separatory hole and the switching-over inlet opening that radially is arranged on the said switching-over joint, and the said switching-over inlet opening and the first separatory hole, the second separatory hole all are communicated with.
5. fluid pressure drive device as claimed in claim 4; It is characterized in that: be provided with two linings that are positioned at said switching-over joint two ends in the said valve body; Said switching-over joint rotates and is installed between two linings; Said switching-over joint is provided with the axial hole that is communicated with two lining inner chambers, is communicated with through auxiliary liquid road between said lining inner chamber and the valve pocket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101446177A CN102168644B (en) | 2011-05-31 | 2011-05-31 | Hydraulic drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101446177A CN102168644B (en) | 2011-05-31 | 2011-05-31 | Hydraulic drive device |
Publications (2)
| Publication Number | Publication Date |
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| CN102168644A CN102168644A (en) | 2011-08-31 |
| CN102168644B true CN102168644B (en) | 2012-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101446177A Active CN102168644B (en) | 2011-05-31 | 2011-05-31 | Hydraulic drive device |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5378363A (en) * | 1991-06-20 | 1995-01-03 | Christophe; Theophile | Fluid filter |
| EP0947230A1 (en) * | 1998-03-30 | 1999-10-06 | Tadayoshi Nagaoka | Filtering device |
| US5965029A (en) * | 1998-06-15 | 1999-10-12 | Simon; Jules A. | System and method for treating an oil gas well stream |
| CN2409389Y (en) * | 1999-10-21 | 2000-12-06 | 辽阳凯维阀业有限公司 | Three-position two-way piston valve |
| CN201161282Y (en) * | 2008-01-15 | 2008-12-10 | 济南汇和机电设备有限公司 | Automatic control device for rivet rotary-drag gun |
| CN201186186Y (en) * | 2008-01-30 | 2009-01-28 | 南通航海机械有限公司 | Full automatic backwashing filter |
| CN101890262A (en) * | 2010-07-29 | 2010-11-24 | 南通航海机械集团有限公司 | Full-automatic back washing filter |
| CN202125398U (en) * | 2011-05-31 | 2012-01-25 | 张家港圣美意机械有限公司 | Hydraulic driving device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10325525B4 (en) * | 2003-06-04 | 2013-10-24 | Boll & Kirch Filterbau Gmbh | backwash filter |
| FI20041262A (en) * | 2004-09-29 | 2006-03-30 | Privet Oy | Filter device for filtering a streaming medium |
-
2011
- 2011-05-31 CN CN2011101446177A patent/CN102168644B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5378363A (en) * | 1991-06-20 | 1995-01-03 | Christophe; Theophile | Fluid filter |
| EP0947230A1 (en) * | 1998-03-30 | 1999-10-06 | Tadayoshi Nagaoka | Filtering device |
| US5965029A (en) * | 1998-06-15 | 1999-10-12 | Simon; Jules A. | System and method for treating an oil gas well stream |
| CN2409389Y (en) * | 1999-10-21 | 2000-12-06 | 辽阳凯维阀业有限公司 | Three-position two-way piston valve |
| CN201161282Y (en) * | 2008-01-15 | 2008-12-10 | 济南汇和机电设备有限公司 | Automatic control device for rivet rotary-drag gun |
| CN201186186Y (en) * | 2008-01-30 | 2009-01-28 | 南通航海机械有限公司 | Full automatic backwashing filter |
| CN101890262A (en) * | 2010-07-29 | 2010-11-24 | 南通航海机械集团有限公司 | Full-automatic back washing filter |
| CN202125398U (en) * | 2011-05-31 | 2012-01-25 | 张家港圣美意机械有限公司 | Hydraulic driving device |
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| Publication number | Publication date |
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| CN102168644A (en) | 2011-08-31 |
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Denomination of invention: Hydraulic drive Effective date of registration: 20220214 Granted publication date: 20121114 Pledgee: China Construction Bank Zhangjiagang branch Pledgor: Zhangjiagang Shengmeiyi Machinery Co.,Ltd. Registration number: Y2022980001507 |
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