CN102512860B - Shale oil solid-liquid separator - Google Patents
Shale oil solid-liquid separator Download PDFInfo
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- CN102512860B CN102512860B CN 201110414954 CN201110414954A CN102512860B CN 102512860 B CN102512860 B CN 102512860B CN 201110414954 CN201110414954 CN 201110414954 CN 201110414954 A CN201110414954 A CN 201110414954A CN 102512860 B CN102512860 B CN 102512860B
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Abstract
The present invention relates to a shale oil solid-liquid separator, which is composed of a separator body, an intermittent rotation shaft, an oil inlet pipe bracket, a left plate module, a right plate module, a left spring module, a right spring module, a board support module and a control module; the intermittent rotation shaft is installed in a central baffle plate of the separator body in a rotary mode, each plate edge end of the left plate module and the right plate module are hinged to the inner side wall of the separator body, the central parts of the left plate module and the right plate module are connected to the right and left inner side walls of the separator body by the left spring module and the right spring module; the oil inlet pipe bracket is fixedly connected with the intermittent rotation shaft, a board support modules are respectively fixedly connected to the intermittent rotation shaft by a support pin; the invention adopts an intermittent operation mode, thereby the uninterruptedly filtration work is realized when sand unloading is required after the solid-liquid separation, by dividing into two boxes and cooperating with the intermittent movement, the normal operation is realized for most of the time, the separation efficiency is improved, by increasing a control module, automatic control of the solid-liquid separation process can be realized.
Description
Technical field
The invention belongs to the solid-liquid separating equipment field, be specifically related to a kind of shale oil solid-liquid separator of simple and efficient.
Background technology
Shale oil solid-liquid separator is mainly for separating of the grains of sand in the shale oil mixture that goes out exploitation.Mainly there is the shortcoming of the following aspects in current shale oil solid-liquid separator:
1, mostly existing shale oil solid-liquid separating equipment is to adopt the internals of driven by motor rotation to separate, and internals comprise again various forms of Filter columns, if any ceramic mould, winding-type, the molten type of fiber bag etc.Complex structure, tumbler is many, and the parts that easily rotate stop because inner foreign material block, and maintenance process is complicated.
2, current shale oil solid-liquid separator needs cleaning more, filters a period of time and just need to scrub filter screen, causes isolated by filtration efficient low.If add back purge system, can cause cyclone separator arrangement complicated, cost increases thereupon.
3, current shale oil solid-liquid separator is because the driven by motor internals are rotated, and energy consumption is high comparatively speaking, and is uneconomical.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structure, filter efficiency is high and realize the shale oil solid-liquid separator of automatic sand draining.
The present invention is achieved through the following technical solutions for solving the problems of the technologies described above:
A kind of shale oil solid-liquid separator mainly comprises casing 1, intermittent rotary axle 2, oil inlet pipe support 3, left plate module 4, right panel module 5, left spring module 6, right spring module 7, plate supporter module 8, control module and motor.
Wherein, casing 1 includes left wall 15, right wall 16 and central dividing plate 17; Left wall 15 downsides are provided with left oil-out 10, and right wall 16 downsides are provided with right oil-out 11; Left wall 15 inboards are fixed with left spring connecting ring 12, and right wall 16 inboards are fixed with right spring connecting ring 13; Central dividing plate 17 is fixed in the centre position of casing 1 inside, and central dividing plate 17 mid portions are provided with four groups of positive stops 14; Casing 1 left bottom is provided with a left side and unloads sand mouth 18, and casing 1 right side bottom is provided with the right side and unloads sand mouth 19.
Plate supporter module 8 comprises ground floor supporter 80, second layer supporter 81, the 3rd layer of supporter 82, the 4th layer of supporter 83, and wherein two outstanding gripper shoes on each plate supporter become hexagonal angle.
Intermittent rotary axle 2 is arranged on central dividing plate 17 places of casing 1 by bearing.
Each edges of boards acies and casing 1 madial wall of left plate module 4 and right panel module 5 are hinged, the mid portion of left plate module 4 is connected to the left wall 15 of casing 1 by each spring of left spring module 6, the mid portion of right panel module 5 is connected to the right wall 16 of casing 1 by each spring of right spring module 7.
Oil inlet pipe support 3 is connected by oil inlet pipe bearing pin 31 and intermittent rotary axle 2, and the ground floor supporter 80 in plate supporter module 8, second layer supporter 81, the 3rd layer of supporter 82, the 4th layer of supporter 83 are connected with intermittent rotary axle 2 respectively by ground floor supporter bearing pin 84, second layer supporter bearing pin 85, the 3rd layer of supporter bearing pin 86, the 4th layer of supporter bearing pin 87.
Described control module comprises left flow sensor, right flow sensor, controller.Left flow sensor is arranged on the left oil-out 10 of casing 1, and right flow sensor is arranged on the right oil-out 11 of casing 1.Controller receives the flow signal from left flow sensor and right flow sensor, after calculating by the controller internal algorithm, and to motor output executive signal, and then the intermittent rotary of driving intermittent rotary axle 2 and oil inlet pipe support 3.
The course of work of the present invention is:
At first be the left box body some work, this moment oil inlet pipe support 3 with oil inlet pipe above left box body.ground floor supporter 80 in plate supporter module 8, second layer supporter 81, the 3rd layer of supporter 82, in the 4th layer of supporter 83, two outstanding gripper shoes are all at left box body, supporting respectively the left bulky grain separating plate 40 in left plate module 4, left particle separation plate 41, left separate small plate 42 and left oil baffle plate 43, due to limited location block 14 on casing 1, the left bulky grain separating plate 40 of left plate module 4, left particle separation plate 41, left separate small plate 42, left oil baffle plate 43 is fixing by each supporter and positive stop 14, left box body normal operation this moment, the oil that filters out is discharged by the left oil-out 10 of left wall 15 downsides of casing 1.There is no oil, sand on right panel module 5 at this moment, lighter weight by right spring module 7 tensions, is labelled on each positive stop on casing 1.
when detecting left flow sensor flow, controller is reduced to when a certain amount of, the left bulky grain separating plate 40 of left plate module 4 on left box body is described, left particle separation plate 41, left separate small plate 42 needs sediment outflow, controller is controlled 120 ° of driven by motor intermittent rotary axle 2 rotations, oil inlet pipe support 3 enters right case with oil inlet pipe, ground floor supporter 80 in this moment plate supporter module 8, second layer supporter 81, the 3rd layer of supporter 82, in the 4th layer of supporter 83, one of two outstanding gripper shoe is at left box body, one at right case, left plate module 4 and right panel module 5 are all supported.This moment, left box body did not have oil-feed, just filtered left bulky grain separating plate 40, left particle separation plate 41, the oil that has not filtered on left separate small plate 42.Right case begins oil-feed, the right bulky grain separating plate 50 in right panel module 5, and right particle separation plate 51, right separate small plate 52, right oil baffle plate 5 also is fixed, and starts working, and the oil that filters out is discharged by the right oil-out 11 of right wall 16 downsides of casing 1.
Be reduced to when approaching zero when controller detects left flow sensor flow, the left bulky grain separating plate 40 of left box body is described, left particle separation plate 41, on left separate small plate 42, remaining oil all is filtered completely, need to unload sand.Controller control the driven by motor rotation intermittently axle 2 continue 120 ° of rotations, this moment oil inlet pipe support 3 still in the casing of right side, two outstanding gripper shoes of supporter this moment are all at right case with oil inlet pipe, the right case normal operation.Left bulky grain separating plate 40 in the left plate module 4 of left box body, left particle separation plate 41, left separate small plate 42 and left oil baffle plate 43 all lose the support of gripper shoe, due to the gravity of sand and plate greater than spring tension, above four blocks of plates overturn downwards along jointed shaft, sand on each plate falls, and unloads sand mouth 18 from a left side, left box body lower side and discharges.Each plate weight saving after sand is discharged, gravity is less than spring tension, the left bulky grain separating plate 40 in the left plate module 4 of left box body, and left particle separation plate 41, left separate small plate 42, left oil baffle plate 43 is all by springs return.Due to the effect of the positive stop on casing 1, more than each plate can be pulled to horizontal level by spring.
Be reduced to a certain amount of time explanation right case and need to unload sand when controller detects right flow sensor flow, controller is controlled driven by motor intermittent rotary axle 2 and is continued 120 ° of intermittent rotaries and get final product.After this course of work and the above-mentioned left box body course of work are similar.
Back and forth said process, can realize shale oil Separation of Solid and Liquid incessantly.
Advantage of the present invention and beneficial effect are:
1, by traditional shale oil solid-liquid separator is transformed, improve structure, adopted three layer filtration, improved filter efficiency and effect.
2, adopt by the left and right branch mailbox, coordinate the intermittent rotary motion, realized uninterrupted filtration, make the left and right most of the time to work, improved separative efficiency.
3, adopt spring automatically to unload sand and playback, simplify the structure, reduced energy consumption.Have cheap, mobile characteristics flexibly.
4, adopt the sensor measurement flow value, control according to uninterrupted and unload the sand time, realize automatic sand draining, reduced artificial participation.
Description of drawings
Fig. 1 is the overall schematic of shale oil solid-liquid separator
Fig. 2 is the cut-away view of shale oil solid-liquid separator
Fig. 3 is the body structure profile
Fig. 4 be the intermittent rotary axle and with oil inlet pipe support, the plate supporter schematic diagram of its assembling
Oil inlet pipe backing positions figure when Fig. 5 (a) works for left box body
Plate supporter module position figure when Fig. 5 (b) works for left box body
Shale oil flow graph when Fig. 5 (c) works for left box body
Oil inlet pipe backing positions figure when Fig. 6 (a) all works for left box body and right case
Plate supporter module position figure when Fig. 6 (b) all works for left box body and right case
Shale oil flow graph when Fig. 6 (c) all works for left box body and right case (being the residue shale oil in its left case)
Oil inlet pipe backing positions figure when Fig. 7 (a) works for right case
Plate supporter module position figure when Fig. 7 (b) works for right case
When Fig. 7 (c) works for right case, left box body unloads the sand state diagram
Shale oil flow graph when Fig. 7 (d) works for right case
Fig. 8 is the schematic diagram of control module
in figure: 1, casing 10, left oil-out 11, right oil-out 12, left spring connecting ring 13, right spring connecting ring 14, positive stop 15, left wall 16, right wall 17, central dividing plate 18, sand mouth 19 is unloaded on a left side, sand mouth 2 is unloaded on the right side, intermittent rotary axle 3, oil inlet pipe support 31, oil inlet pipe bearing pin 4, left plate module 40, left bulky grain separating plate 41, left particle separation plate 42, left separate small plate 43, left oil baffle plate 5, right panel module 50, right bulky grain separating plate 51, right particle separation plate 52, right separate small plate 53, right oil baffle plate 6, left spring module 7, right spring module 8, plate supporter module 80, ground floor supporter 81, second layer supporter 82, the 3rd layer of supporter 83, the 4th layer of supporter 84, ground floor supporter bearing pin 85, second layer supporter bearing pin 86, the 3rd layer of supporter bearing pin 87, the 4th layer of supporter bearing pin
The specific embodiment
Further illustrate particular content of the present invention and the course of work below in conjunction with the accompanying drawing illustrated embodiment.
Fig. 1 is the overall schematic of shale oil solid-liquid separator, Fig. 2 is the cut-away view of shale oil solid-liquid separator, as shown, this shale oil solid-liquid separator mainly comprises casing 1, intermittent rotary axle 2, oil inlet pipe support 3, left plate module 4, right panel module 5, left spring module 6, right spring module 7, plate supporter module 8.
Fig. 3 is the body structure profile.As shown, casing 1 includes left wall 15, right wall 16, central dividing plate 17; Left wall 15 downsides are provided with left oil-out 10, and right wall 16 downsides are provided with right oil-out 11; Left wall 15 inboards are fixed with left spring connecting ring 12, and right wall 16 inboards are fixed with right spring connecting ring 13; Central dividing plate 17 is fixed in the centre position of casing 1 inside, and central dividing plate 17 mid portions are provided with four groups of positive stops 14; Casing 1 left bottom is provided with a left side and unloads sand mouth 18, and casing 1 right side bottom is provided with the right side and unloads sand mouth 19.
Fig. 4 be the intermittent rotary axle and with oil inlet pipe support, the plate supporter of its assembling.As shown, plate supporter module 8 comprises ground floor supporter 80, second layer supporter 81, the 3rd layer of supporter 82, the 4th layer of supporter 83, and wherein two outstanding gripper shoes on each plate supporter become hexagonal angle.
Intermittent rotary axle 2 is arranged on central dividing plate 17 places of casing 1 by bearing.
Each edges of boards acies and casing 1 madial wall of left plate module 4 and right panel module 5 are hinged, the mid portion of left plate module 4 is connected to the left wall 15 of casing 1 by each spring of left spring module 6, the mid portion of right panel module 5 is connected to the right wall 16 of casing 1 by each spring of right spring module 7.
Oil inlet pipe support 3 is connected by oil inlet pipe bearing pin 31 and intermittent rotary axle 2, and the ground floor supporter 80 in plate supporter module 8, second layer supporter 81, the 3rd layer of supporter 82, the 4th layer of supporter 83 are connected with intermittent rotary axle 2 respectively by ground floor supporter bearing pin 84, second layer supporter bearing pin 85, the 3rd layer of supporter bearing pin 86, the 4th layer of supporter bearing pin 87.
Fig. 8 is the schematic diagram of control module, and control module comprises left flow sensor, right flow sensor, controller.Left flow sensor is arranged on the left oil-out 10 of casing 1, and right flow sensor is arranged on the right oil-out 11 of casing 1.Controller receives the flow signal from left flow sensor and right flow sensor, after calculating by the controller internal algorithm, and to motor output executive signal, and then the intermittent rotary of driving intermittent rotary axle 2 and oil inlet pipe support 3.
The course of work of the present invention is:
At first be left box body some work (Fig. 5 (c)), this moment oil inlet pipe support 3 with oil inlet pipe above left box body (Fig. 5 (a)).In ground floor supporter 80 in plate supporter module 8, second layer supporter 81, the 3rd layer of supporter 82, the 4th layer of supporter 83, two outstanding gripper shoes are all at left box body (Fig. 5 (b)), supporting left plate module 4, due to limited location block 14 on casing 1, the left bulky grain separating plate 40 of left plate module 4, left particle separation plate 41, left separate small plate 42, left oil baffle plate 43 is fixed, left box body normal operation this moment, the oil that filters out is discharged by the left oil-out 10 of left wall 15 downsides of casing 1.There is no oil, sand on right panel module 5 at this moment, lighter weight by right spring module 7 tensions, is labelled on each positive stop on casing 1.
when left flow sensor flow is reduced to when a certain amount of, the left bulky grain separating plate 40 of left plate module 4 on left box body is described, left particle separation plate 41, left separate small plate 42 needs sediment outflow, left flow sensor passes the signal to controller, controller is controlled 120 ° of driven by motor intermittent rotary axle 2 rotations, oil inlet pipe support 3 enters right case (Fig. 6 (a)) with oil inlet pipe, ground floor supporter 80 in this moment plate supporter module 8, second layer supporter 81, the 3rd layer of supporter 82, in the 4th layer of supporter 83, one of two outstanding gripper shoe is at left box body, one at right case (Fig. 6 (b)), left plate module 4 and right panel module 5 are all supported.This moment, left box body did not have oil-feed, just filtered left bulky grain separating plate 40, left particle separation plate 41, the oil that has not filtered on left separate small plate 42.Right case begins oil-feed, the right bulky grain separating plate 50 in right panel module 5, right particle separation plate 51, right separate small plate 52, right oil baffle plate 5 also is fixed, and starts working, and the oil that filters out is discharged (Fig. 6 (c)) by the right oil-out 11 of right wall 16 downsides of casing 1.
When the left bulky grain separating plate 40 of left box body, left particle separation plate 41, on left separate small plate 42 remaining oil all be filtered complete after, prepare to unload sand.Rotation intermittently axle 2 continues 120 ° of rotations, this moment oil inlet pipe support 3 with oil inlet pipe still in the casing of right side (Fig. 7 (a)), two outstanding gripper shoes of supporter this moment are all at right case (Fig. 7 (b)), the right case normal operation.Left bulky grain separating plate 40 in the left plate module 4 of left box body, left particle separation plate 41, left separate small plate 42, left oil baffle plate 43 all loses support, due to the gravity of sand and plate greater than spring tension, above four blocks of plates overturn downwards along jointed shaft, and the sand on each plate falls, and unload sand mouth 18 from a left side, left box body lower side and discharge (Fig. 7 (c)).Each plate weight saving after sand is discharged, gravity is less than spring tension, and the left bulky grain separating plate 40 in the left plate module 4 of left box body, left particle separation plate 41, left separate small plate 42, left oil baffle plate 43 are all by springs return (Fig. 7 (d)).Due to the effect of the positive stop on casing 1, more than each plate can be pulled to level by spring.
Need to unload sand when right flow sensor flow is reduced to a certain amount of time explanation right case, left flow sensor passes the signal to controller, and controller is controlled driven by motor intermittent rotary axle 2 and continued 120 ° of intermittent rotaries and get final product.
Back and forth said process, can realize Separation of Solid and Liquid incessantly.
Above-described embodiment only is used for explanation the present invention, and wherein the structure of each parts, connected mode etc. all can change to some extent, and every equivalents of carrying out on the basis of technical solution of the present invention and improvement all should not got rid of outside protection scope of the present invention.
Claims (6)
1. a shale oil solid-liquid separator, include casing (1), oil inlet pipe support (3), left plate module (4), right panel module (5), left spring module (6), right spring module (7) and motor, it is characterized in that:
The outer side edges acies of described left plate module (4) and right panel module (5) and casing (1) madial wall are hinged, the mid portion of left plate module (4) is connected to left wall (15) inboard of casing (1) by each spring of left spring module (6), the mid portion of right panel module (5) is connected to right wall (16) inboard of casing (1) by each spring of right spring module (7);
Also include intermittent rotary axle (2) and plate supporter module (8), described intermittent rotary axle (2) is rotatably mounted on the central dividing plate (17) of casing (1) and locates;
Ground floor supporter (80) in described plate supporter module (8), second layer supporter (81), the 3rd layer of supporter (82), the 4th layer of supporter (83) are connected with intermittent rotary axle (2) respectively;
The central dividing plate (17) of described casing (1) is provided with four groups of positive stops (14);
The inboard of described left plate module (4) and right panel module (5) is gripped by each positive stop (14) on each supporter in plate supporter module (8) and central dividing plate (17);
Described oil inlet pipe support (3) is fixed on intermittent rotary axle (2) upper end.
2. shale oil solid-liquid separator according to claim 1, it is characterized in that: described casing (1) includes left wall (15), right wall (16), central dividing plate (17); Described left wall (15) downside is provided with left oil-out (10), and right wall (16) downside is provided with right oil-out (11); Left wall (15) inboard is fixed with left spring connecting ring (12), and right wall (16) inboard is fixed with right spring connecting ring (13); Described central dividing plate (17) is fixed in the centre position of casing (1) inside; Casing (1) left bottom is provided with a left side and unloads sand mouth (18), and bottom, casing (1) right side is provided with the right side and unloads sand mouth (19).
3. shale oil solid-liquid separator according to claim 2, it is characterized in that: described left plate module (4) comprises left bulky grain separating plate (40), left particle separation plate (41), left separate small plate (42) and left oil baffle plate (43), each separating plate and the oil baffle of above-mentioned left plate module (4) from top to bottom are arranged in order in left box body.
4. shale oil solid-liquid separator according to claim 2, it is characterized in that: described right panel module (5) comprises right bulky grain separating plate (50), right particle separation plate (51), right separate small plate (52) and right oil baffle plate (53), each separating plate and the oil baffle of above-mentioned right panel module (5) from top to bottom are arranged in order in right case.
5. shale oil solid-liquid separator according to claim 1, it is characterized in that: described plate supporter module (8) comprises ground floor supporter (80), second layer supporter (81), the 3rd layer of supporter (82), the 4th layer of supporter (83), and wherein two outstanding gripper shoes on each plate supporter become hexagonal angle.
6. the described shale oil solid-liquid separator of any one according to claim 1 to 5, it is characterized in that: also include control module, described control module includes left flow sensor, right flow sensor and controller; Left flow sensor is arranged on the left oil-out (10) of casing (1), and right flow sensor is arranged on the right oil-out (11) of casing (1); Controller receives the flow signal from left flow sensor and right flow sensor, after calculating by the controller internal algorithm, and to motor output executive signal, and then the intermittent rotary of driving intermittent rotary axle (2) and oil inlet pipe support (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110414954 CN102512860B (en) | 2011-12-13 | 2011-12-13 | Shale oil solid-liquid separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110414954 CN102512860B (en) | 2011-12-13 | 2011-12-13 | Shale oil solid-liquid separator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102512860A CN102512860A (en) | 2012-06-27 |
| CN102512860B true CN102512860B (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110414954 Expired - Fee Related CN102512860B (en) | 2011-12-13 | 2011-12-13 | Shale oil solid-liquid separator |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102899074B (en) * | 2012-11-05 | 2014-11-05 | 吉林大学 | Integrated shale oil separating system |
| CN104987878B (en) * | 2015-07-23 | 2017-03-08 | 温州菲德石化科技有限公司 | Shale oil back-flushing filtering system and filter method |
| CN106194079A (en) * | 2016-07-28 | 2016-12-07 | 成都高普石油工程技术有限公司 | The circulation utilization method of drill bit coolant in petroleum drilling and mining |
| CN106089134A (en) * | 2016-07-28 | 2016-11-09 | 成都高普石油工程技术有限公司 | A kind of drilling fluid reclamation technique |
| CN106014308A (en) * | 2016-07-28 | 2016-10-12 | 成都高普石油工程技术有限公司 | Drilling fluid separating method achieved through drilling fluid separating device with mud baffles |
| CN106014307A (en) * | 2016-07-28 | 2016-10-12 | 成都高普石油工程技术有限公司 | Method for removing solid-phase particles in drilling fluid |
| CN106194080A (en) * | 2016-07-28 | 2016-12-07 | 成都高普石油工程技术有限公司 | A kind of drilling fluid reuse means of oil exploitation |
| CN106150410A (en) * | 2016-07-28 | 2016-11-23 | 成都高普石油工程技术有限公司 | A kind of solid phase particles removal system of drilling fluid |
| CN107961586B (en) * | 2017-12-11 | 2020-07-17 | 山东玉鑫环保科技股份有限公司 | Sewage treatment is with filtering slagging-off all-in-one |
| CN110898505B (en) * | 2019-12-23 | 2022-02-01 | 韩园月 | Device and method for filtering sewage and cleaning filtering cylinder wall |
| CN113266334B (en) * | 2021-06-29 | 2022-02-01 | 吉林大学 | Oil shale in-situ mining underground backwashing sieving separation device |
| CN113731003B (en) * | 2021-09-23 | 2023-01-20 | 延安地丰石油工程技术服务有限公司 | Vibrating filtration equipment for oil exploitation |
| CN116983752B (en) * | 2023-09-26 | 2024-01-26 | 太原吕泰生物科技有限公司 | Precise filtering device and method for disinfectant production |
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| CN1090215A (en) * | 1993-01-29 | 1994-08-03 | 钱志光 | Continuous dual-chamber filter |
| CN201239575Y (en) * | 2008-08-12 | 2009-05-20 | 江苏丰正环保设备科技有限公司 | Filter |
| CN201551895U (en) * | 2009-09-04 | 2010-08-18 | 罗星健 | Integrated parallel-type filter |
| CN202427218U (en) * | 2011-12-13 | 2012-09-12 | 吉林大学 | Solid-liquid separator of shale oil |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080179261A1 (en) * | 2007-01-31 | 2008-07-31 | Hubert Patrovsky | Single disc dual flow rotary filter |
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- 2011-12-13 CN CN 201110414954 patent/CN102512860B/en not_active Expired - Fee Related
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|---|---|---|---|---|
| CN1090215A (en) * | 1993-01-29 | 1994-08-03 | 钱志光 | Continuous dual-chamber filter |
| CN201239575Y (en) * | 2008-08-12 | 2009-05-20 | 江苏丰正环保设备科技有限公司 | Filter |
| CN201551895U (en) * | 2009-09-04 | 2010-08-18 | 罗星健 | Integrated parallel-type filter |
| CN202427218U (en) * | 2011-12-13 | 2012-09-12 | 吉林大学 | Solid-liquid separator of shale oil |
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| CN102512860A (en) | 2012-06-27 |
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