CN105886118A

CN105886118A - Extraction technology for loop type extractor

Info

Publication number: CN105886118A
Application number: CN201610342607.7A
Authority: CN
Inventors: 尹越峰; 徐稀文; 沈阳
Original assignee: Myande Group Co Ltd
Current assignee: Myande Group Co Ltd
Priority date: 2016-05-23
Filing date: 2016-05-23
Publication date: 2016-08-24
Anticipated expiration: 2036-05-23
Also published as: CN105886118B

Abstract

The invention relates to an extraction technology for a loop type extractor. The extraction technology comprises the following steps: enabling an oil material embryo to advance left from a feeding section to an upper extracting section, then enter a box body at the tail and slide down to a lower layer and then advance right to a lower extracting section and a box body at the head; spraying concentrated mixed oil in a right feeding section oil hopper to a left feeding section, then enabling the concentrated mixed oil to fall into a left feeding section oil hopper, then spraying a right feeding section and enabling the concentrated mixed oil to fall back into the right feeding section oil hopper, and overflowing left at the right feeding section oil hopper; spraying the upper extracting section with mixed oil, enabling the mixed oil to fall back into an upper extracting section oil hopper and overflow to the right feeding section oil hopper through a ramp pan; spraying the box body at the tail with the mixed oil, enabling the mixed oil to fall back into an oil hopper for the box body at the tail and enter the upper extracting section for spraying through a line-crossing oil supplementing pipe; spraying the lower extracting section with the mixed oil, and enabling the mixed oil to fall back into a lower extracting section oil hopper and overflow to the oil hopper for the box body at the tail; spraying the left part of a draining section with diluted mixed oil, and enabling the diluted mixed oil to fall back into a draining section oil hopper and overflow to the lower extracting section oil hopper; and spraying the middle part of the draining section with a new solvent. The extraction technology provided by the invention is high in yield and reliable in operation.

Description

A kind of extraction process of loop type extractor

Technical field

The present invention relates to a kind of vegetable oil leaching equipment, particularly relate to the extraction process of a kind of loop type extractor, belong to fats and oils processing field of mechanical technique.

Background technology

Leaching is operation the most key in oil refining process, its principle is the intersolubility utilizing oils and fats with solvent, solvent penetration is to solid oil plant, dissolve oils and fats and form concentrated blend, owing to there is concentration difference, concentrated blend within solid oil plant is diffused in dilute miscella of outside, oil extraction out.The capital equipment leached in operation is infuser, according to material characteristic and yield, and general employing pot group type infuser, flat rotary extractor or ring type infuser etc..

Traditional loop type extractor includes ring chain, the head lower end of ring chain uses single drive shaft to drive, head upper end uses arc track to turn to, afterbody bending section uses semicircular track for upper strata chain skid steer to lower floor, the lower section of upper strata chain is provided with upper strata screen, lower floor's screen it is provided with below lower floor's scraper plate, the lower section of upper strata screen is provided with upper strata oil bucket, the lower section of lower floor's screen is provided with lower floor's oil bucket, on, the top of lower floor's screen is respectively provided with the bed of material, circumference along chain is uniformly provided with heavy big scraper plate, on, the top of the lower bed of material is respectively equipped with spray equipment, carry out material soaking extraction, the oils and fats leached falls in the oil bucket of lower section.

Production capacity reaches the super sized ring infuser of 10000 ton per days, and its chain length reaches more than 130 meters, and weight of equipment reaches hundreds of ton, often occurs primary fault to cause production line to interrupt all bringing about great losses, therefore the highest to the reliability requirement of equipment.Traditional endless infuser has the following disadvantages:

1. the sprocket wheel in drive shaft is big with chain engagement place stress, abrasion weight；Chain simultaneously under tension and Moment, stress is big, time have chain cleavage.

2. use heavy big scraper plate, track wearability is required high, the abrasion-resistant stee of more than hardness HB600 need to be used as slide rail, it is difficult to purchase, solderability is poor, it is necessary to using bolt-connection, at bolt penetration hole, processing difficulties and seal are poor, vibrate in running, the reason such as impact can make to get loose at sealing gasket, thus cause escape.

3. head section and the tail arc segment structure size of traditional endless infuser are big, especially after equipment enlarging, and highway transportation difficulty；For reducing resistance, afterbody semicircular track preferably uses positive circular arc, but because limiting beyond traffic condition, part large-scale circular arc segmentation uses ellipse, and frictional resistance increases further.

4. at afterbody semicircular track upset, material flare between scraper plate is scattered, after scraper plate moves at lower floor's horizontal segment, close up to the state of being parallel to each other between adjacent scraper plate, between scraper plate, the loose material collapsed is squeezed into the most closely knit by scraper plate, the stress causing scraper plate and chain increases, and has deformation and chain rupture risk, and maintenance intensity and security risk are big.

5. afterbody semicircular track section is to be full of the cavity of the wet dregs of rice, can only static storage in inside without technical process, the wet dregs of rice and oil plants such as immersion, drip washing.

6. for ensureing the material first in first out of afterbody semicircular track section, the bottom of heavy big scraper plate is held tightly in orbit with chain, and the upper limb of heavy big scraper plate againsts the inwall scraper of housing external arc, and the aspect ratio causing heavy big scraper plate is higher.When the big scraper plate of heavy type goes to lower floor, between lower edge and the screen of scraper plate, scraping causes increased wear, and large area friction causes frictional force to increase, abrasion aggravation, especially screen is that light-duty rustless steel grid section is made, abrasion is easily caused grid section gap and becomes big, makes too much powder enter in miscella, leaching system is produced harm；Palpus running check, replacing after screen abrasion, cause operating cost high.

Summary of the invention

It is an object of the invention to, overcome problems of the prior art, it is provided that the extraction process of a kind of loop type extractor, it is big that day leaches yield, and solvent consumption is low, operates steadily reliable.

For solving above technical problem, a kind of extraction process of the loop type extractor of the present invention, in turn include the following steps: (1) the oil plant embryo charging aperture from buffer bin top enters the right part of feed zone and advances to the left along upper strata screen, concentrated blend in right feed zone oil bucket is delivered to drop down onto in left feed zone oil bucket after left feed zone spray groove sprays downwards by right feed zone circulating pump, miscella in left feed zone oil bucket is delivered to drop back into after right feed zone spray groove sprays downwards in described right feed zone oil bucket by left feed zone circulating pump, and right feed zone oil struggles against feed zone oil bucket overflow to the left；The wettest dregs of rice enter upper extracting stage to be continued to be moved to the left, and the miscella in upper extracting stage oil bucket is delivered to drop back in upper extracting stage oil bucket after upper extracting stage spray groove sprays downwards by upper extracting stage circulating pump, and upper extracting stage oil bucket is by aqueduct feed zone oil bucket overflow to the right；The wettest dregs of rice enter afterbody casing from the left end of upper extracting stage, move right after dropping down onto on lower layered material bed along slide carriage free skating；Miscella in tail box body oils bucket drops back into tail box body oils bucket after being promoted and spray by afterbody casing circulating pump on slide carriage and afterbody casing lower floor material bed, and the miscella in tail box body oils bucket is entered upper extracting stage oil bucket also by more line repairing pipe and sprayed on the left part bed of material of upper extracting stage by more line spray groove；The wettest dregs of rice enter to the right lower extracting stage from afterbody casing, and the miscella in lower extracting stage oil bucket is delivered to drop back in lower extracting stage oil bucket after lower extracting stage spray groove sprays downwards by lower extracting stage circulating pump, and lower extracting stage oil struggles against rearwardly casing oil bucket overflow；The wettest dregs of rice enter to the right, from lower extracting stage, the section of draining, and the dilute miscella in the section of draining oil bucket is delivered to drop back into the section of draining oil after the left part of the section of draining is sprayed by the section of draining spray groove by the section of draining circulating pump and struggled against, the downward extracting stage oil bucket overflow of the section of draining oil bucket；Novel solvent drops back into the section of draining oil bucket after being sprayed the middle part of the section of draining by novel solvent spray groove, the wettest dregs of rice continue to enter to the right draining without spray section of the section of draining right part；(6) the grouts after draining continue to enter to the right head casing, and discharge from the discharging opening of head box bottom.

Relative to prior art, the present invention achieves following beneficial effect: (1) at the middle part of the section of draining, novel solvent enters novel solvent spray groove by novel solvent pipe and sprays downwards, the dregs of rice wet to the section of draining that oil content is minimum carry out last immersion and drip washing, obtain oil content less than 0.8%(butt) following grouts, then grouts continue to be moved right into draining without spray section, drain grouts and enter to the right head casing, discharge from discharging opening.(2) novel solvent becomes, after the wet dregs of rice are soaked drip washing, the miscella that concentration is extremely low, fall in the section of draining oil bucket, extracted out by the section of draining circulating pump and deliver to the section of draining spray groove and the left part of the section of draining is sprayed, the low wet dregs of rice of the section of draining of oil content time are soaked and drip washing, the miscella obtaining low concentration drops back in the section of draining oil bucket, is extracted out circulated sprinkling by the section of draining circulating pump.(3) the miscella of the section of draining oil bucket overflow flows to lower extracting stage oil bucket, extracted out by lower extracting stage circulating pump and deliver to lower extracting stage spray groove and spray downwards, the wet dregs of rice of lower extracting stage that oil content is slightly higher are soaked and drip washing, the miscella obtaining slightly higher concentration drops back in lower extracting stage oil bucket, is extracted out circulated sprinkling by lower extracting stage circulating pump.The most traditional semicircular track afterbody relies on heavy type scratch board promote material descending and turn to, turn to descending during the wet dregs of rice interrupted immersion and drip washing；The material of the present invention relies on gravity to glide along slide carriage, contacts at whereabouts Duan Buyu scraper plate, proceeds to soak and drip washing, substantially increase production capacity and the efficiency of leaching during descending.(5) afterbody turns to scraper from top to bottom owing to need not scraper plate, the scraper plate of the present invention can use light-duty bar shaped scraper plate, heavy big scraper plate need not be used, oil plant embryo and the rough surface of the wet dregs of rice, adhesion each other is very big, only the light-duty bar shaped scraper plate of lower height need to be used just can to make times over the bed of material of blade height and move forward.(6) on the rightmost side, the high concentration miscella of extracting stage oil bucket overflow enters in right feed zone oil bucket by aqueduct, extracted out by right feed zone circulating pump and deliver to left feed zone spray groove and spray downwards, the wet dregs of rice of feed zone left part are soaked and drip washing, the miscella obtaining very high concentration drops back in left feed zone oil bucket, extracted out by left feed zone circulating pump again and deliver to right feed zone spray groove and spray downwards, the oil plant embryo having just enter into feed zone right part soaks and drip washing, it is thus achieved that during very the miscella of high concentration drops back into right feed zone oil bucket；In the miscella overflow to the left left feed zone oil bucket of entrance that right feed zone oil bucket is unnecessary.(7) after the oil plant embryo Initial Soak having just enter into due to feed zone right part and drip washing, fall in the miscella in right feed zone oil bucket containing substantial amounts of dregs of rice end, pipeline, pump and equipment blocking it is easily caused after sedimentation, it is sent to left feed zone spray groove by the extraction of right feed zone circulating pump spray, after the wet dregs of rice bed of material of feed zone left part filters, can obtain containing miscellaneous less concentrated blend, beneficially later separation and evaporation from left feed zone oil bucket.The oil plant embryo that oil content is the highest is extracted by the miscella that concentration is the highest, can keep good effect of extracting.(8) present invention achieves the reverse flow of material and solvent, the wet dregs of rice that the freshest solvent soaking oil content is minimum, the slightly lower miscella of concentration soaks the wet dregs of rice that oil content is slightly higher, the miscella that concentration is high soaks the higher wet dregs of rice of oil content, remain the concentration difference that extract and the wet dregs of rice are bigger, it is ensured that effect of extracting.

Improvement as the present invention, concentrated blend from step (1) the top overflow of left feed zone oil bucket flow out, sent in one-level cyclone hydraulic separators by infuser oil outlet pump and remove thick impurity, enter back into two grades of cyclone hydraulic separators and remove thin impurity, then the concentrated blend cleaned enters temporary storage tank, then vapo(u)rization system evaporation is extracted and entered to mixed oil drawing pump out from the bottom of temporary storage tank；The miscella discharged bottom described one-level cyclone hydraulic separators, two grades of cyclone hydraulic separators and temporary storage tank returns to right feed zone spray groove by return header, sprays the oil plant embryo having just enter into.The miscella being obtained by extraction is after one-level cyclone hydraulic separators and two grades of cyclone hydraulic separators go the removal of impurity, precipitate through temporary storage tank again, the miscella of cleaning enters vapo(u)rization system evaporation, the oil plant embryo having just enter into is sprayed by the miscella containing impurity discharged bottom one-level cyclone hydraulic separators, two grades of cyclone hydraulic separators and temporary storage tank, it is achieved that the classification cycle of concentrated blend and all recycling.

As a further improvement on the present invention, step (2) in upper extracting stage oil bucket be respectively equipped with multistage with upper extracting stage spray groove, every grade of upper extracting stage oil bucket is gone up the upper extracting stage spray groove that extracting stage circulating pump is extracted out and delivered to this grade accordingly, the upper extracting stage oil bucket overflow the most to the right of the upper extracting stage oil bucket in left side, the upper extracting stage oil bucket of the rightmost side is by the feed zone oil bucket overflow to the right of described aqueduct；Step (4) in lower extracting stage oil bucket be respectively equipped with multistage with lower extracting stage spray groove, every grade of lower extracting stage oil bucket is descended extracting stage circulating pump to extract out accordingly and is delivered to the lower extracting stage spray groove of this grade, the lower extracting stage oil bucket lower extracting stage oil bucket overflow the most to the left on right side, the lower extracting stage oil of the leftmost side struggles against rearwardly casing oil bucket overflow.In each unit, classification carries out soaking drip washing so that the wet dregs of rice that oil content is low contact with dilute miscella, and the wet dregs of rice that oil content is high contact with concentrated blend, remain the concentration difference that extract and the wet dregs of rice are bigger, it is ensured that effect of extracting.

As a further improvement on the present invention, described loop type extractor includes infuser housing and is positioned at the ring chain in infuser housing, multiple scraper plate is uniformly installed on described ring chain, described infuser housing is mutually spliced by described head casing, feed zone, upper extracting stage, lower extracting stage, the section of draining and described afterbody casing, the upper strata of described ring chain is positioned in described feed zone and upper extracting stage, the lower floor of described ring chain be positioned at described lower extracting stage with in the section of draining；The right output port of described feed zone is connected by the two ends up and down of flange with described head casing respectively with the right output port of the described section of draining, the left port of described upper extracting stage is connected by the two ends up and down of flange with described afterbody casing respectively with the left port of described lower extracting stage, the left port of described feed zone is connected by flange with the right output port of described upper extracting stage, and the right output port of described lower extracting stage is connected by flange with the left port of the described section of draining；Described buffer bin is connected to the right-hand member top of described feed zone, and described head casing, feed zone, upper extracting stage are respectively equipped with offgas outlet with the top of afterbody casing.After ring chain starts, the oil plant embryo charging aperture from buffer bin top enters, it is layered on upper layer material bed under drawing-in device drives, upper strata scraper plate promotes material right-to-left to advance from feed zone upwards extracting stage, the wet dregs of rice are become after oil plant indusium miscella spray, the wet dregs of rice enter afterbody casing from the left end of upper extracting stage, in afterbody casing, material drops down onto on lower layered material bed, lower floor's scraper plate promotes material to sequentially pass through to the right lower extracting stage and the section of draining from the bottom of afterbody casing, finally arrives head casing and discharges from discharging opening.Material is during advancing, and material is constantly sprayed, soaks and extracts by extract, and the oils and fats of leaching falls in the oil bucket of lower section.Huge infuser is divided into several standalone module by the present invention, it is simple to the prepackage in manufacturing shop and subdivision transport, can connect into entirety to erecting bed easily, greatly reduce on-site installation work amount and construction period.

As the improvement of the present invention, the bottom of described head casing is provided with lower drive shaft, and described lower drive shaft is provided with lower sprocket, and the top of described head casing is provided with guider；The top of described afterbody casing is provided with drive shaft, in described upper drive shaft, upper sprocket wheel is installed, the bottom of described afterbody casing is provided with lower tensioning shaft, being provided with lower tightener sprocket on described lower tensioning shaft, described ring chain is successively around wrapping on described lower sprocket, upper guider, upper sprocket wheel and lower tightener sprocket；Described upper guider is slide rail or upper tightener sprocket；Described upper drive shaft is driven by upper fluid pressure drive device, described lower drive shaft is driven by lower fluid pressure drive device, described upper fluid pressure drive device and described lower fluid pressure drive device are controlled by same hydraulic power unit, described upper fluid pressure drive device is connected with hydraulic oil fuel feeding house steward by confession oil inlet pipe respectively with the oil-in of described lower fluid pressure drive device, and described upper fluid pressure drive device is connected with hydraulic oil oil return house steward by oil returning branch pipe respectively with the oil return opening of described lower fluid pressure drive device；Described hydraulic power unit includes hydraulic oil container, hydraulic oil pump and three position four-way directional control valve, described hydraulic oil pump is driven by hydraulic oil pump motor, the Median Function of described three position four-way directional control valve is M type, the suction inlet of described hydraulic oil pump is connected with the oil-out of described hydraulic oil container and is provided with oil absorption filter at the oil-out of hydraulic oil container, described hydraulic oil delivery side of pump is connected with the P mouth of described three position four-way directional control valve by check valve, the T mouth of described three position four-way directional control valve is connected with the oil return opening of described hydraulic oil container, the A mouth of described three position four-way directional control valve is connected with described hydraulic oil fuel feeding house steward, the B mouth of described three position four-way directional control valve is connected with described hydraulic oil oil return house steward.The present invention is provided with lower drive shaft at the right lower quadrant of ring chain, being provided with drive shaft at the upper left quarter of ring chain, upper drive shaft drives upper strata chain, and lower drive shaft drives lower floor's chain, two drive shafts synchronize, run with torque, reduce more than half than the driving load of single drive shaft.Avoiding single shaft when driving, main drive shaft should drive chain, undertake the function of tension chain again, it is to avoid the translational adjustment of large-scale drive mechanism.Eliminate huge afterbody semicircular track, it is to avoid chain is held tightly in the longest semicircular track friction；The load of chain and sprocket wheel is evenly distributed, and stress is little, and abrasion reduces more than half, and chain only Tensile load, without Moment, and same specification infuser chain pull is only the 50% of original structure, and force-bearing situation obtains thorough improvement, and reliability greatly improves.First pass through handle and three position four-way directional control valve is switched to middle position, start hydraulic oil pump, hydraulic oil in hydraulic oil container enters hydraulic oil pump after oil absorption filter filters, now directly turning on oil return due to the P mouth of three position four-way directional control valve with T mouth, the hydraulic oil of hydraulic oil pump output returns to hydraulic oil container and realizes the No Load Start of hydraulic oil pump motor.When normally working, by handle, three position four-way directional control valve is switched to right working position, hydraulic oil enters hydraulic oil fuel feeding house steward from the A mouth of three position four-way directional control valve, by hydraulic oil, fuel feeding house steward simultaneously enters upper and lower fluid pressure drive device, drive upper and lower drive shaft synchronous axial system, the oil return of upper and lower fluid pressure drive device respectively enters hydraulic oil oil return house steward, enters the B mouth of three position four-way directional control valve from hydraulic oil oil return house steward, then returns to hydraulic oil container from T mouth.After infuser Start-up and Adjustment feeds on a small quantity, by handle, three position four-way directional control valve can be switched to left station, it is achieved rotating backward of upper and lower drive shaft, but material is discharged from the discharging opening of head casing as early as possible.The hydraulic oil of hydraulic oil pump output is assigned to two by hydraulic oil fuel feeding house steward and supplies oil inlet pipe, then respectively enters fluid pressure drive device and lower fluid pressure drive device, then is imported hydraulic oil oil return house stewards by two oil returning branch pipes, is then return to hydraulic oil container；Because the hydraulic fluid pressure of upper and lower fluid pressure drive device input is equal, identical on the output torsion theory of upper and lower drive shaft, by hydraulic system self-balancing pressure, it is ensured that two-axis synchronization even running.

As a further improvement on the present invention, described upper drive shaft and described lower drive shaft are the most uniformly provided with multiple poking device, each described poking device includes surrounding amplexis the getting stuck of drive shaft or lower drive shaft periphery on described respectively, the periphery got stuck described in each is respectively symmetrically and is provided with the driving lever radially stretched out, and the end of each described driving lever is connected to be perpendicular to the blade of driving lever axis.The thickness of the bed of material is generally up to 1 meter, conducts oneself with dignity bigger, is squeezed during being promoted advance by scraper plate; plus persistently being soaked by solvent, the bed of material that more moves forward is the most closely knit, and the surface ratio of the wet dregs of rice is rougher; it is easy to caking knot arch; from on extracting stage enter afterbody casing time, normally can freely drop under the effect of deadweight, once occur knot to encircle, easily produce bridging; form cantilevered out stock column; drop in big bulk, make lower layered material bed be difficult to be formed stable, with the high bed of material, affect follow-up leaching；The present invention arranges poking device in upper drive shaft, and poking device rotates with upper drive shaft, as produced cantilevered out stock column, under being forced to dial by the blade of poking device, it is achieved drop continuously, is beneficial to be formed stable, the contour bed of material on lower layered material bed.In like manner, lower drive shaft arranges poking device, it is possible to achieve sustainedly and stably to the discharge hole for discharge of head casing, it is ensured that the stable charging of subsequent evaporation operation.

As a further improvement on the present invention, described scraper plate extends along the fabric width direction of infuser, the two ends of described scraper plate are respectively fixedly connected with on the outer plate of described ring chain, described outer plate is hinged on the outside of inner plate by chain pin, the middle part of described chain pin is respectively installed with chain roller, and the top of described scraper plate is respectively fixed with wear-resistant slide block with the described corresponding position of chain roller；It is provided with described upper strata screen below the upper strata of described ring chain, described upper strata screen is embedded with and the upper strata slide rail of described chain roller contact；The lower section of lower floor's scraper plate is provided with lower floor's screen, and described lower floor screen is embedded with the lower floor's slide rail contacted with described wear-resistant slide block.Upper strata chain is rolled on the slide rail of upper strata by chain roller, when chain goes to lower floor, due to scraper plate upper limb down, chain roller cannot be supported on lower floor's slide rail, the present invention is fixed with wear-resistant slide block at the top of scraper plate, it is supported on lower floor's slide rail by wear-resistant slide block, makes to be formed between the top of lower floor's scraper plate and lower floor's screen the least gap；The advance frictional force of chain of the present invention is little, and to screen not damaged, screen is long for service life, and operating cost is low；Achieve contactless between scraper plate and screen, zero abrasion, gap becomes big because of abrasion to avoid screen, too much cake embryo powder is made to enter in miscella, leaching system is produced harm or adverse effect, extend the service life of infuser, it also avoid the running check after screen abrasion, replacing, cause operating cost high.

As a further improvement on the present invention, described lower drive shaft is positioned on the right side of the underface of described upper guider, and described lower tensioning shaft is positioned on the left of the underface of described upper drive shaft；The right side of described upper drive shaft is provided with the slide carriage that the left end head with described upper strata screen docks mutually, the lower end of described slide carriage is tilted to the left, being provided with, between lower end and the described lower tensioning shaft of described slide carriage, the striker plate being tilted to the right, the lower end of described striker plate is arranged right below the blind plate docked with described lower-layer gate plate level.Ring chain is trapezoidal, reduces cornerite and the resistance of guider, increases the cornerite of lower tightener sprocket, space is provided for the slide carriage in afterbody casing, the wet dregs of rice, along the inclined-plane landing of slide carriage, hit after skidding off bottom slide carriage and turn at striker plate, then drop on blind plate；Striker plate had both played steering-effecting, slow down again the impact that wet dregs of rice freely falling body produces；Lower layered material bed in afterbody casing uses blind plate carrying to fall the wet dregs of rice, improve impact resistance, drag to embathe on lower floor's screen through bar shaped scraper plate again after blind plate eliminates impact energy, lower layered material bed is collectively formed by blind plate and lower floor's screen, the impact of the wet dregs of rice is avoided to enter in the gap of lower floor's screen, cause material leakage, affect the cleannes of miscella.Use the structure of slide carriage and striker plate compared with the afterbody of semicircular track, be greatly saved space, it is simple to transport；Slide carriage and striker plate are refused chain and any friction are occurred, and common material can be used to make, it is to avoid with bolts, cause the escape at bolt hole.Holding tightly with chain in traditional structure compared with sliding in afterbody semicircular track, in afterbody casing of the present invention, the force-bearing situation of upper drive shaft and lower tensioning shaft is good, and running resistance is the least.Afterbody turns to scraper from top to bottom owing to need not scraper plate, the scraper plate of the present invention can use light-duty bar shaped scraper plate, heavy big scraper plate need not be used, oil plant embryo and the rough surface of the wet dregs of rice, adhesion each other is very big, only the light-duty bar shaped scraper plate of lower height need to be used just can to make times over the bed of material of blade height and move forward.Traditional semicircular track afterbody relies on heavy type scratch board promote material descending and turn to, turn to descending during the wet dregs of rice interrupted immersion and drip washing；The material of the present invention relies on Gravitational sliding, contacts at whereabouts Duan Buyu scraper plate, can proceed to soak and drip washing, substantially increase production capacity and the efficiency of leaching during descending.

As a further improvement on the present invention, described novel solvent spray groove be positioned at described in the section of draining middle part roof below, the entrance of described novel solvent spray groove is connected with novel solvent pipe, the described section of draining spray groove be positioned at described in the section of draining left part roof below, described in the section of draining oil bucket be positioned at described in the section of draining screen below；Described lower extracting stage oil bucket is positioned at below the screen of described lower extracting stage, and described lower extracting stage spray groove is positioned at below the roof of described lower extracting stage；Described tail box body oils bucket is positioned at the bottom of described afterbody casing, described slide carriage upper end be arranged over self-loopa spray groove, lower floor's material of described afterbody casing is arranged over lower self-loopa spray groove, described more line spray groove is positioned at the lower section of described upper extracting stage left part roof, the bottom of described tail box body oils bucket is connected with the entrance of described afterbody casing circulating pump, and the outlet of described afterbody casing circulating pump is connected by the entrance of valve and described upper self-loopa spray groove, lower self-loopa spray groove and more line spray groove respectively；Described upper extracting stage oil bucket is positioned at below the screen of described upper extracting stage, and described upper extracting stage spray groove is positioned at below the roof of described upper extracting stage；Described more line repairing pipe is connected to the left side wall top of described upper extracting stage oil bucket, and the entrance of described more line repairing pipe is connected with the outlet of described afterbody casing circulating pump；Described left and right feed zone oil bucket is positioned at the left and right portion below described feed zone screen, described left and right feed zone spray groove is positioned at the left and right portion below described feed zone roof, the described upper extracting stage oil bucket of the rightmost side by described aqueduct to described right feed zone oil bucket overflow.The miscella of the lower extracting stage oil bucket overflow of the leftmost side flows to tail box body oils bucket, extracted and deliver to out upper self-loopa spray groove, lower self-loopa spray groove and more line spray groove to spray downwards by afterbody casing circulating pump, wherein go up self-loopa spray groove the wet dregs of rice on slide carriage are sprayed, the wet dregs of rice of afterbody casing lower floor are sprayed by lower self-loopa spray groove, add immersion and the drip washing of afterbody compared with traditional semicircular track afterbody, substantially increase production capacity and the efficiency of leaching；The left part bed of material of upper extracting stage is sprayed by more line spray groove, and the miscella fallen enters in upper extracting stage oil bucket, it is achieved that lower floor's miscella is to the conveying on upper strata.Tail box body oils bucket plays miscella and is sent to the turnover effect on upper strata, is usually maintained in half dummy status, and its extracted amount is equal with new molten amount+extraction quantity.If more maximum spray and the infiltration capacity of line spray groove can not meet the demand that upper strata extracts, then can open corresponding valve by more line repairing pipe extracting stage oil bucket fuel feeding directly up.In upper extracting stage oil bucket, the higher miscella of oil content is extracted out by upper extracting stage circulating pump and is delivered to upper extracting stage spray groove and sprays downwards, the upper extracting stage wet dregs of rice higher to oil content soak and drip washing, the miscella obtaining higher concentration drops back in extracting stage oil bucket, is extracted out circulated sprinkling by upper extracting stage circulating pump.Upper extracting stage oil bucket, upper extracting stage circulating pump and upper extracting stage spray groove are provided with multistage from left to right, the upper extracting stage oil bucket overflow the most to the right of the upper extracting stage oil bucket in left side.

As a further improvement on the present invention, the roof of described feed zone, upper extracting stage, lower extracting stage and the section of draining is respectively arranged below with the claw device struck off by bed of material end face, described claw device includes claw body, described claw body is provided with the horizontal lower edge tilted to supplied materials direction, uniformly connect on described horizontal lower edge and have the rake teeth of multiple insertion bed of material, the upper end of described claw body is suspended on claw trunnion axis, the two ends of described claw trunnion axis are hinged on claw bearing, and described claw bearing is fixed on described infuser housing.Claw body is suspended on claw trunnion axis, bed of material top is struck off by the horizontal lower edge of claw body, the thrust of the bed of material overcomes the deadweight of claw body that its lower edge is raised up to certain altitude to reach poised state, rake teeth inserts and forms the multiple tracks groove being parallel to each other in the bed of material on bed of material surface, be conducive to miscella flowing be uniformly distributed, fresh solvent or miscella spray permeate downwards on the surface of the bed of material, when miscella spray flux is slightly larger than infiltration capacity, bed of material surface can form liquid level, now miscella circulating load reaches maximum, also it is the proper states of technique setting, the horizontal lower edge of claw body can avoid miscella along bed of material end face channelling, guarantee the effect of counter-current extraction.

As a further improvement on the present invention, described hydraulic oil pump motor (M1) is driven by converter (VFD), described converter (VFD) is controlled by control loop, start button (SB1) it has been sequentially connected in series between live wire and the zero line in described control loop, stop button (SB2), the fault breaking-off contact of described converter (VFD), the time delay of stall alert time-delay relay disconnects normally closed interlock (KT1-1) and the coil of mair motor control relay (K1), the two ends of start button (SB1) are parallel with mair motor and control the self-keeping contact (K1-1) of relay, second normally open contact (K1-2) of mair motor control relay is connected on the enabling signal input of described converter (VFD)；The level signals outfan of level position transducer (LT) is connected with the input end of analog signal (AI) of described converter (VFD), and the analog signal output (AO) of described converter (VFD) is connected with the first signal source input (AI1) of comparator relay (SSR)；The signal end outfan of speed measurement switch (ZS) of detection infuser chain pace is connected with the signal input part of velocity transducer (SST), and the signal output part of velocity transducer (SST) is connected with secondary signal source input (AI2) of comparator relay (SSR)；The comparison signal fault contact of described comparator relay (SSR) and mair motor are connected to after controlling the 3rd normally open contact (K1-3) of relay and the coils connected in series of described stall alert time-delay relay (KT1) between live wire and the zero line in control loop；It is connected to after the coils connected in series of high charge level switch (LT-H) and the high charge level alarm relay (KT2) of described level position transducer (LT) to control between live wire and the zero line in loop, between the normally open contact (KT2-1) of high charge level alarm relay (KT2) and the live wire and the zero line that are connected to control loop after forbidding the coils connected in series of supplied materials relay (K2)；Being connected to after the low stuff level switch (LT-L) of described level position transducer (LT) and the coils connected in series of low material position alarm relay (KT3) between live wire and the zero line in control loop, the normally closed interlock (KT3-1) of low material position alarm relay (KT3) is connected between time delay disconnection normally closed interlock (KT1-1) of stall alert time-delay relay and the coil of mair motor control relay (K1).Press start button SB1, mair motor controls the coil of relay K 1 and obtains electric, mair motor controls self-keeping contact's K1-1 adhesive self-insurance of relay, mair motor controls the second normally open contact K1-2 Guan Bi of relay makes converter VFD start driving hydraulic oil pump motor M1 rotation, and hydraulic power unit drives chain to advance by fluid power system；The rotating speed of the level signals regulation hydraulic oil pump motor M1 that converter detects according to level position transducer LT, and actuating speed signal is supplied to the first signal source input of comparator relay SSR；Speed measurement switch ZS detects the actual pace of infuser chain, and chain actual speed signal is supplied to the secondary signal source input of comparator relay SSR by Negotiation speed transmitter SST；If there is bigger error with chain actual speed signal in actuating speed signal, the then comparison signal fault contact closure of comparator relay SSR, the coil making stall alert time-delay relay KT1 obtains electric, the time delay of stall alert time-delay relay disconnects normally closed interlock KT1-1 time delay and disconnects, mair motor is made to control the coil losing electricity of relay K 1, mair motor controls the self-keeping contact K1-1 of relay, the 3rd normally open contact K1-3 of the second normally open contact K1-2 and mair motor control relay that mair motor controls relay simultaneously switches off, converter VFD quits work and makes ring chain halt.When converter VFD self is out of order, the fault breaking-off contact of converter VFD disconnects and makes hydraulic oil pump motor M1 shut down.When the bed depth in infuser is too high, triggering high charge level switch LT-H Guan Bi, the coil of high charge level alarm relay KT2 obtains electric, the normally open contact KT2-1 Guan Bi of high charge level alarm relay KT2, make to forbid that the coil of supplied materials relay K 2 obtains electric, send stopping charging signal to charging circuit.When feeding mechanism break down so that the bed depth in infuser too low time, trigger low stuff level switch LT-L Guan Bi, the coil of low material position alarm relay KT3 obtains electric, the normally closed interlock KT3-1 time delay of low material position alarm relay KT3 disconnects, making mair motor control the coil losing electricity of relay K 1, converter VFD quits work and makes ring chain halt.

As a further improvement on the present invention, described comparator relay SSR includes power module, CPU, communication module, input module and relay driving module；DC24V is converted into DC 5V running voltage and is supplied to each module by described power module；The two-way analogue signal that described input module is transmitted by CPU is converted to digital signal, then result of calculation is compared judgement, if the error of two paths of signals value exceedes permissible value, then it is made to drive described comparison signal fault contact action to described relay driving module output low level；Described communication module will be uploaded in host computer in download program to CPU or by the data in CPU and duty；The current signal of the two-way 4 ~ 20mA received is respectively converted into the voltage signal of 0 ~ 5V by described input module, and delivers to the two-way input end of analog signal of CPU, simultaneously works as the effect of signal isolation；The low level control signal that described relay driving module reception CPU sends here is gone forward side by side after row energization amplification, makes described comparison signal fault contact produce closed action.Communication module is by download program to CPU, first signal source input AI1 of input module receives the analogue signal of converter VFD output and i.e. drives analogue signal, the secondary signal source input AI2 of input module receives analogue signal and the chain actual pace analogue signal that velocity transducer SST sends here, the current signal of the two-way 4 ~ 20mA received is respectively converted into the voltage signal of 0 ~ 5V by input module, and delivers to two-way input end of analog signal P1.1 and P1.2 of CPU；Two-way DC0 ~ 5V analogue signal that input module is transmitted by CPU is converted to 10 position digital signals, calculate according to respective range, then result of calculation is compared judgement, if the error of two paths of signals value exceedes permissible value, P0.5 output low level delivers to relay driving module, and relay driving module drives comparison signal fault contact closure；Data in CPU and duty can be uploaded in host computer by communication module.

Accompanying drawing explanation

The present invention is further detailed explanation with detailed description of the invention below in conjunction with the accompanying drawings, and accompanying drawing only provides reference and explanation use, is not used to limit the present invention.

Fig. 1 is the front view of loop type extractor of the present invention.

Fig. 2 is the top view of Fig. 1.

Fig. 3 is the axonometric chart of Fig. 1.

Fig. 4 is the material solvent flow graph of loop type extractor of the present invention.

Fig. 5 is the drive system schematic diagram of loop type extractor of the present invention.

Fig. 6 is the drive system axonometric chart of loop type extractor of the present invention.

Fig. 7 is the hydraulic system pipeline figure of loop type extractor of the present invention.

Fig. 8 is the drive system axonometric chart of loop type extractor of the present invention.

Fig. 9 is the enlarged drawing of aminoacyl site in Fig. 8.

Figure 10 is the structure chart of loop type extractor afterbody casing of the present invention.

Figure 11 is the axonometric chart of Figure 10.

Figure 12 is the axonometric chart of upper drive shaft in loop type extractor of the present invention.

Figure 13 is the axonometric chart of poking device in Figure 12.

Figure 14 is the axonometric chart of more line spray groove in loop type extractor of the present invention.

Figure 15 is the axonometric chart of loop type extractor claw device of the present invention.

Figure 16 is the system diagram of loop type extractor of the present invention.

Figure 17 is the hydraulic schematic diagram of loop type extractor of the present invention.

Figure 18 is the control circuit figure of loop type extractor of the present invention.

Figure 19 is the schematic diagram of comparator relay in Figure 18.

In figure: 1. buffer bin；1a. charging aperture；2. feed zone；2a. aqueduct；2b. left feed zone spray groove；2c. right feed zone spray groove；2d. left feed zone oil bucket；2e. right feed zone oil bucket；2f. feed zone offgas outlet；3. go up extracting stage；3a. gets over line spray groove；3b. upper extracting stage spray groove；3c. upper extracting stage oil bucket；3d. upper extracting stage offgas outlet；4. descend extracting stage；Extracting stage spray groove under 4a.；Extracting stage oil bucket under 4b.；5. the section of draining；5a. novel solvent spray groove；The 5b. section of draining spray groove；The 5c. section of draining oil bucket；6. head casing；6a. discharging opening；6b. head casing offgas outlet；7. afterbody casing；7a. upper self-loopa spray groove；Self-loopa spray groove under 7b.；7c. tail box body oils bucket；7d. slide carriage；7e. striker plate；7f. blind plate；7g. head casing offgas outlet；8. upper strata screen；8a. upper strata slide rail；9. lower floor's screen；9a. lower floor slide rail；10. go up drive shaft；The upper fluid pressure drive device of 10a.；10b. upper sprocket wheel；11. times drive shafts；Fluid pressure drive device under 11a.；11b. lower sprocket；Guider on 12.；13. times tensioning shafts；Tightener sprocket under 13a.；14. hydraulic power units；14a. hydraulic oil container；14a1. air filter；14a2. liquid level liquid thermometer；14b. oil absorption filter；14c. manual ball valve；14d. compensator；14e. hydraulic oil pump；M1. hydraulic oil pump motor；14f. check valve；14g. pressure oil filter；14h. three position four-way directional control valve；15. ring chains；15a. outer plate；15b. inner plate；15c. chain roller；15d. wear-resistant slide block；16. scraper plates；17. claw devices；17a. claw body；17b. rake teeth；17c claw trunnion axis；17d. claw bearing；18. poking devices；18a. gets stuck；18b. driving lever；18c. driving lever gusset；18d. blade；19. supporting legs；20. support bars；21. housing ribs；B1. the section of draining circulating pump；B2. extracting stage circulating pump is descended；B3. extracting stage circulating pump is gone up；B4. afterbody casing circulating pump；The rightest feed zone circulating pump；The most left feed zone circulating pump；B7. infuser oil outlet pump；B8. miscella drawing pump；G1. novel solvent pipe；G2. line repairing pipe is got over；G3. return header；G4. oil drainage main；H1. one-level cyclone hydraulic separators；H2. two grades of cyclone hydraulic separators；T1. temporary storage tank；ZF. vapo(u)rization system；C1. tail gas condenser.

QM1. chopper；FC1. thermorelay；VFD. converter；SB1. start button；SB2. stop button；K1. mair motor controls relay；K2. supplied materials relay is forbidden；KT1. stall alert time-delay relay；KT2. high charge level alarm relay；The lowest material position alarm relay；LT. level position transducer；ZS. speed measurement switch；SST. velocity transducer；SSR. comparator relay；PT-H. oil pressure alarm switch is surpassed；PT-L. low oil pressure alarm switch；H1. stall alert display lamp；H2. high charge level alarm lamp；The lowest material position alarm lamp；H4. hydraulic system fault display lamp；H5. supplied materials display lamp is forbidden.

Detailed description of the invention

As shown in Fig. 1 to Figure 16, the extraction process of the loop type extractor of the present invention includes infuser housing and the ring chain 15 being positioned in infuser housing, annularly the circumference of chain 15 is uniformly provided with multiple scraper plate 16, infuser housing is mutually spliced by head casing 6, feed zone 2, upper extracting stage 3, lower extracting stage 4, the section of draining 5 and afterbody casing 7, the upper strata of ring chain 15 be positioned at feed zone 2 with in upper extracting stage 3, the lower floor of ring chain 15 be positioned at lower extracting stage 4 with in the section of draining 5；The right output port of feed zone 2 is connected with the two ends up and down of head casing 6 by flange respectively with the right output port of the section of draining 5, the left port of upper extracting stage 3 is connected with the two ends up and down of afterbody casing 7 by flange respectively with the left port of lower extracting stage 4, the left port of feed zone 2 is connected by flange with the right output port of upper extracting stage 3, and the right output port of lower extracting stage 4 is connected by flange with the left port of the section of draining 5；The right-hand member top of feed zone 2 connects has buffer bin 1, the top of buffer bin 1 to be provided with charging aperture 1a, and the bottom of head casing 6 is provided with discharging opening 6a.

Upper extracting stage 3 and feed zone 2 are supported on lower extracting stage 4 and the section of draining 5 by support bar 20 respectively, and lower extracting stage 4, the section of draining 5 and afterbody casing 7 are supported on the ground by supporting leg 19 respectively.

The top of head casing 6 is provided with head casing offgas outlet 6b, the top of feed zone 2 is provided with feed zone offgas outlet 2f, the top of upper extracting stage 3 is provided with extracting stage offgas outlet 3d, the top of afterbody casing 7 is provided with head casing offgas outlet 7g, and each offgas outlet all entrances with tail gas condenser C1 are connected.

After ring chain 15 starts, the oil plant embryo charging aperture 1a from buffer bin 1 top enters, it is layered on upper layer material bed under drawing-in device drives, upper strata scraper plate promotes material right-to-left to advance from feed zone 2 upwards extracting stage 3, the wet dregs of rice are become after oil plant indusium miscella spray, the wet dregs of rice enter afterbody casing 7 from the left end of upper extracting stage 3, in afterbody casing 7, material drops down onto on lower layered material bed, lower floor's scraper plate promotes material to sequentially pass through to the right lower extracting stage 4 and the section of draining 5 from the bottom of afterbody casing 7, finally arrives head casing 6 and discharges from discharging opening 6a.Material is during advancing, and material is constantly sprayed, soaks and extracts by extract, and the oils and fats of leaching falls in the oil bucket of lower section.Huge infuser is divided into several standalone module by the present invention, it is simple to the prepackage in manufacturing shop and subdivision transport, can connect into entirety to erecting bed easily, greatly reduce on-site installation work amount and construction period.

The bottom of head casing 6 is provided with lower drive shaft 11, and lower drive shaft 11 is provided with lower sprocket 11b, and the top of head casing 6 is provided with guider 12；The top of afterbody casing 7 is provided with drive shaft 10, in upper drive shaft 10, upper sprocket wheel 10b is installed, the bottom of afterbody casing 7 is provided with lower tensioning shaft 13, being provided with lower tightener sprocket 13a on lower tensioning shaft 13, ring chain 15 is successively around wrapping on lower sprocket 11b, upper guider 12, upper sprocket wheel 10b and lower tightener sprocket 13a；Upper guider 12 is slide rail or upper tightener sprocket.The present invention is provided with lower drive shaft 11 at the right lower quadrant of ring chain 15, it is provided with drive shaft 10 at the upper left quarter of ring chain 15, upper drive shaft 10 drives upper strata chain, lower drive shaft 11 drives lower floor's chain, two drive shafts synchronize, run with torque, reduce more than half than the driving load of single drive shaft.Avoiding single shaft when driving, main drive shaft should drive chain, undertake the function of tension chain again, it is to avoid the translational adjustment of large-scale drive mechanism.Eliminate huge afterbody semicircular track, it is to avoid chain is held tightly in the longest semicircular track friction；The load of chain and sprocket wheel is evenly distributed, and stress is little, and abrasion reduces more than half, and chain only Tensile load, without Moment, and same specification infuser chain pull is only the 50% of original structure, and force-bearing situation obtains thorough improvement, and reliability greatly improves.

Upper drive shaft 10 and lower drive shaft 11 are the most uniformly provided with multiple poking device 18, each poking device 18 includes surrounding amplexis at upper drive shaft 10 or the 18a that gets stuck of lower drive shaft 11 periphery respectively, respectively the get stuck periphery of 18a is respectively symmetrically and is provided with the driving lever 18b radially stretched out, driving lever 18b is provided with driving lever gusset 18c to improve intensity, and the end of each driving lever 18b is connected to be perpendicular to the blade 18d of driving lever axis.

The thickness of the bed of material is generally up to 1 meter; conduct oneself with dignity bigger; it is squeezed during being promoted advance by scraper plate 16; plus persistently being soaked by solvent; the bed of material that more moves forward is the most closely knit; the surface ratio of the wet dregs of rice is rougher; it is easy to caking knot arch; from on extracting stage 3 enter afterbody casing 7 time, normally can freely drop under the effect of deadweight, once occur knot to encircle, easily produce bridging; form cantilevered out stock column; drop in big bulk, make lower layered material bed be difficult to be formed stable, with the high bed of material, affect follow-up leaching；The present invention arranges poking device 18 in upper drive shaft 10, poking device 18 rotates with upper drive shaft 10, as produced cantilevered out stock column, under being forced to dial by the blade 18d of poking device 18, realize dropping continuously, be beneficial to be formed stable, the contour bed of material on lower layered material bed.In like manner, lower drive shaft 11 arranges poking device 18, it is possible to achieve sustainedly and stably to the discharging opening 6a discharging of head casing 6, it is ensured that the stable charging of subsequent evaporation operation.

As shown in Figure 8, Figure 9, scraper plate 16 extends along the fabric width direction of infuser, the two ends of scraper plate 16 are respectively fixedly connected with on the outer plate 15a of ring chain 15, outer plate 15a is hinged on the outside of inner plate 15b by chain pin, the middle part of chain pin is respectively installed with chain roller 15c, and the top of scraper plate 16 is respectively fixed with wear-resistant slide block 15d with the corresponding position of chain roller 15c；It is provided with upper strata screen 8 below the upper strata of ring chain 15, upper strata screen 8 is embedded with the upper strata slide rail 8a contacted with chain roller 15c；The lower section of lower floor's scraper plate is provided with lower floor's screen 9, and lower floor's screen 9 is embedded with the lower floor slide rail 9a contacted with wear-resistant slide block 15d.

Upper strata chain is rolled on the slide rail 8a of upper strata by chain roller 15c, when chain goes to lower floor, due to scraper plate upper limb down, chain roller 15c cannot be supported on lower floor slide rail 9a, the present invention is fixed with wear-resistant slide block 15d at the top of scraper plate, it is supported on lower floor slide rail 9a by wear-resistant slide block 15d, makes to be formed between the top of lower floor's scraper plate and lower floor's screen 9 the least gap；The advance frictional force of chain of the present invention is little, and to screen not damaged, screen is long for service life, and operating cost is low；Achieve contactless between scraper plate and screen, zero abrasion, gap becomes big because of abrasion to avoid screen, too much cake embryo powder is made to enter in miscella, leaching system is produced harm or adverse effect, extend the service life of infuser, it also avoid the running check after screen abrasion, replacing, cause operating cost high.

Lower drive shaft 11 is positioned on the right side of the underface of guider 12, and lower tensioning shaft 13 is positioned on the left of the underface of drive shaft 10；The right side of upper drive shaft 10 is provided with the slide carriage 7d that the left end head with upper strata screen 8 docks mutually, the lower end of slide carriage 7d is tilted to the left, being provided with, between lower end and the lower tensioning shaft 13 of slide carriage 7d, the striker plate 7e being tilted to the right, the lower end of striker plate 7e is arranged right below the blind plate 7f docked with lower floor screen 9 level.

Ring chain 15 is trapezoidal, reduce cornerite and the resistance of guider 12, increase the cornerite of lower tightener sprocket 13a, space is provided for the slide carriage 7d in afterbody casing 7, the wet dregs of rice are along the inclined-plane landing of slide carriage 7d, hit after skidding off bottom slide carriage 7d and turn at striker plate 7e, then drop on blind plate 7f；Striker plate 7e had both played steering-effecting, slow down again the impact that wet dregs of rice freely falling body produces；Lower layered material bed in afterbody casing 7 uses blind plate 7f carrying to fall the wet dregs of rice, the lower section of blind plate 7f increases support member, improve impact resistance, drag to embathe on lower floor's screen 9 through bar shaped scraper plate again after blind plate 7f eliminates impact energy, lower layered material bed is collectively formed by blind plate and lower floor's screen, avoid the impact of the wet dregs of rice to enter in the gap of lower floor's screen 9, cause material leakage, affect the cleannes of miscella.

Use the structure of slide carriage 7d and striker plate 7e compared with the afterbody of semicircular track, be greatly saved space, it is simple to transport；Slide carriage 7d and striker plate 7e refuses chain and any friction occurs, and common material can be used to make, it is to avoid with bolts, cause the escape at bolt hole.

Holding tightly with chain in traditional structure compared with sliding in afterbody semicircular track, in afterbody casing 7 of the present invention, the force-bearing situation of upper drive shaft 10 and lower tensioning shaft 13 is good, and running resistance is the least.Afterbody turns to scraper from top to bottom owing to need not scraper plate, the scraper plate of the present invention can use light-duty bar shaped scraper plate, heavy big scraper plate need not be used, oil plant embryo and the rough surface of the wet dregs of rice, adhesion each other is very big, only the light-duty bar shaped scraper plate of lower height need to be used just can to make times over the bed of material of blade height and move forward.

The material of the present invention relies on Gravitational sliding, contacts at whereabouts Duan Buyu scraper plate, can proceed to soak and drip washing, substantially increase production capacity and the efficiency of leaching during descending.

Novel solvent spray groove 5a it is provided with below the middle part roof of the section of draining 5, the entrance of novel solvent spray groove 5a is connected with novel solvent pipe G1, the section of draining spray groove 5b it is provided with below the left part roof of the section of draining 5, the section of draining oil bucket 5c it is provided with below the screen of the section of draining 5, the bottom of the section of draining oil bucket 5c is connected with the entrance of the section of draining circulating pump B1, and the outlet of the section of draining circulating pump B1 is connected with the entrance of the section of draining spray groove 5b.

Multiple lower extracting stage oil bucket 4b it is sequentially provided with below the screen of lower extracting stage 4, multistage lower extracting stage spray groove 4a it is provided with below the roof of lower extracting stage 4, the bottom of lower extracting stage oil bucket 4b entrance with lower extracting stage circulating pump B2 respectively is connected, and the entrance of the outlet of each lower extracting stage circulating pump B2 lower extracting stage spray groove 4a corresponding to top respectively is connected.

The bottom of afterbody casing 7 is provided with tail box body oils bucket 7c, slide carriage 7d upper end be arranged over self-loopa spray groove 7a, lower floor's material of afterbody casing 7 is arranged over lower self-loopa spray groove 7b, the lower section of upper extracting stage 3 left part roof is provided with more line spray groove 3a, the bottom of tail box body oils bucket 7c is connected with the entrance of afterbody casing circulating pump B4, and the outlet of afterbody casing circulating pump B4 is connected with the entrance of upper self-loopa spray groove 7a, lower self-loopa spray groove 7b and more line spray groove 3a by valve respectively.

Multiple upper extracting stage oil bucket 3c it is sequentially provided with below the screen of upper extracting stage 3, multistage upper extracting stage spray groove 3b it is provided with below the roof of upper extracting stage 3, the bottom of each upper extracting stage oil bucket 3c entrance with upper extracting stage circulating pump B3 respectively is connected, and the entrance of the outlet of each upper extracting stage circulating pump B3 upper extracting stage spray groove 3b corresponding to top respectively is connected；The left side wall top of upper extracting stage oil bucket 3c connects has more line repairing pipe G2, the more entrance of line repairing pipe G2 to be connected with the outlet of afterbody casing circulating pump B4.

The left side of the section of draining oil bucket 5c is to the lower extracting stage oil bucket 4b overflow of the rightmost side, lower extracting stage oil bucket 4b right-to-left overflow step by step, and the lower extracting stage oil bucket 4b rearwardly casing oil bucket 7c overflow of the leftmost side；Upper extracting stage oil bucket 3c overflow the most step by step.

Middle part in the section of draining 5, novel solvent enters novel solvent spray groove 5a by novel solvent pipe G1 and sprays downwards, the dregs of rice wet to the section of draining that oil content is minimum carry out last immersion and drip washing, obtain oil content less than 0.8%(butt) following grouts, then grouts continue to be moved right into draining without spray section, drain grouts and enter to the right head casing 6, discharge from discharging opening 6a.

Novel solvent becomes, after the wet dregs of rice are soaked drip washing, the miscella that concentration is extremely low, fall in the section of draining oil bucket 5c, extracted out by the section of draining circulating pump B1 and deliver to the section of draining spray groove 5b and the left part of the section of draining 5 is sprayed, the low wet dregs of rice of the section of draining of oil content time are soaked and drip washing, the miscella obtaining low concentration drops back in the section of draining oil bucket 5c, is extracted out circulated sprinkling by the section of draining circulating pump B1.

The miscella of the section of draining oil bucket 5c overflow flows to lower extracting stage oil bucket 4b, extracted out by lower extracting stage circulating pump B2 and deliver to lower extracting stage spray groove 4a and spray downwards, the wet dregs of rice of lower extracting stage that oil content is slightly higher are soaked and drip washing, the miscella obtaining slightly higher concentration drops back in lower extracting stage oil bucket 4b, is extracted out circulated sprinkling by lower extracting stage circulating pump B2.Lower extracting stage oil bucket 4b, lower extracting stage circulating pump B2 and lower extracting stage spray groove 4a right-to-left are provided with multistage, the lower extracting stage oil bucket 4b on right side lower extracting stage oil bucket 4b overflow the most to the left.

The miscella of the lower extracting stage oil bucket 4b overflow of the leftmost side flows to tail box body oils bucket 7c, extracted and deliver to out upper self-loopa spray groove 7a by afterbody casing circulating pump B4, lower self-loopa spray groove 7b and more line spray groove 3a sprays downwards, wherein go up self-loopa spray groove 7a the wet dregs of rice on slide carriage 7d are sprayed, the wet dregs of rice of afterbody casing 7 lower floor are sprayed by lower self-loopa spray groove 7b, add immersion and the drip washing of afterbody compared with traditional semicircular track afterbody, substantially increase production capacity and the efficiency of leaching；The left part bed of material of upper extracting stage 3 is sprayed by more line spray groove 3a, and the miscella fallen enters in upper extracting stage oil bucket 3c, it is achieved that lower floor's miscella is to the conveying on upper strata.Tail box body oils bucket 7c plays miscella and is sent to the turnover effect on upper strata, is usually maintained in half dummy status, and its extracted amount is equal with new molten amount+extraction quantity.If the maximum spray of more line spray groove 3a and infiltration capacity can not meet the demand of upper strata extraction, then can open corresponding valve by more line repairing pipe G2 extracting stage oil bucket 3c fuel feeding directly up.

In upper extracting stage oil bucket 3c, the higher miscella of oil content is extracted out by upper extracting stage circulating pump B3 and is delivered to upper extracting stage spray groove 3b and sprays downwards, the upper extracting stage wet dregs of rice higher to oil content soak and drip washing, the miscella obtaining higher concentration drops back in extracting stage oil bucket 3c, is extracted out circulated sprinkling by upper extracting stage circulating pump B3.Upper extracting stage oil bucket 3c, upper extracting stage circulating pump B3 and upper extracting stage spray groove 3b are provided with multistage from left to right, the upper extracting stage oil bucket 3c in left side upper extracting stage oil bucket 3c overflow the most to the right.

Present invention achieves the reverse flow of material and solvent, the wet dregs of rice that the freshest solvent soaking oil content is minimum, the slightly lower miscella of concentration soaks the wet dregs of rice that oil content is slightly higher, the miscella that concentration is high soaks the higher wet dregs of rice of oil content, remain the concentration difference that extract and the wet dregs of rice are bigger, it is ensured that effect of extracting.

Left and right feed zone oil bucket 2e it is provided with below the screen of feed zone 2, left and right feed zone spray groove 2c it is provided with below the roof of feed zone 2, the upper extracting stage oil bucket 3c of the rightmost side passes through aqueduct 2a feed zone oil bucket 2e overflow to the right, right feed zone oil bucket 2e feed zone oil bucket 2d overflow to the left；The bottom of right feed zone oil bucket 2e is connected with the entrance of right feed zone circulating pump B5, and the outlet of right feed zone circulating pump B5 is connected with the entrance of left feed zone spray groove 2b；The bottom of left feed zone oil bucket 2d is connected with the entrance of left feed zone circulating pump B6, and the outlet of left feed zone circulating pump B6 is connected with the entrance of right feed zone spray groove 2c.

On the rightmost side, the high concentration miscella of extracting stage oil bucket 3c overflow enters in right feed zone oil bucket 2e by aqueduct 2a, extracted out by right feed zone circulating pump B5 and deliver to left feed zone spray groove 2b and spray downwards, the wet dregs of rice of feed zone 2 left part are soaked and drip washing, the miscella obtaining very high concentration drops back in left feed zone oil bucket 2d, extracted out by left feed zone circulating pump B6 again and deliver to right feed zone spray groove 2c and spray downwards, the oil plant embryo having just enter into feed zone 2 right part soaks and drip washing, it is thus achieved that during very the miscella of high concentration drops back into right feed zone oil bucket 2e；Right miscella overflow to the left unnecessary for feed zone oil bucket 2e enters in left feed zone oil bucket 2d.

After the oil plant embryo Initial Soak having just enter into due to feed zone right part and drip washing, fall in the miscella in right feed zone oil bucket 2e containing substantial amounts of dregs of rice end, pipeline, pump and equipment blocking it is easily caused after sedimentation, it is sent to left feed zone spray groove 2b by right feed zone circulating pump B5 extraction spray, after the wet dregs of rice bed of material of feed zone left part filters, can obtain containing miscellaneous less concentrated blend, beneficially later separation and evaporation from left feed zone oil bucket 2d.The oil plant embryo that oil content is the highest is extracted by the miscella that concentration is the highest, can keep good effect of extracting.

The top overfall of left feed zone oil bucket 2d is connected with the entrance of infuser oil outlet pump B7 by overflow pipe, the outlet of infuser oil outlet pump B7 is connected with the entrance of one-level cyclone hydraulic separators H1, the outlet of one-level cyclone hydraulic separators H1 is connected with the entrance of two grades of cyclone hydraulic separators H2, the top entry of outlet temporary storage tank T1 of two grades of cyclone hydraulic separators H2 connects, the bottom oil-out of temporary storage tank T1 is connected with the entrance of miscella drawing pump B8, and the outlet of miscella drawing pump B8 is connected with the entrance of vapo(u)rization system ZF；One-level cyclone hydraulic separators H1, two grades of cyclone hydraulic separators H2 are connected with return header G3 respectively with the bottom evacuation port of temporary storage tank T1, and the overfall of temporary storage tank T1 is also connected with return header G3, and the outlet of return header G3 is connected with the entrance of right feed zone spray groove 2c.

It is leached device oil outlet pump B7 from the concentrated blend of left feed zone oil bucket 2d top overflow to extract out, after entering the one-level cyclone hydraulic separators H1 thick impurity of removal, enter back into two grades of cyclone hydraulic separators H2 and remove thin impurity, then the concentrated blend cleaned enters temporary storage tank T1, then is mixed, from temporary storage tank T1, the evaporization process that oil drawing pump B8 extraction entrance is follow-up.The miscella containing impurity discharged bottom one-level cyclone hydraulic separators H1, two grades of cyclone hydraulic separators H2 and temporary storage tank T1 returns to right feed zone spray groove 2c by return header G3, the oil plant embryo having just enter into is sprayed, it is achieved that the classification cycle of concentrated blend and all recycling.

The section of draining circulating pump B1, lower extracting stage circulating pump B2, upper extracting stage circulating pump B3, afterbody casing circulating pump B4, right feed zone circulating pump B5, left feed zone circulating pump B6 are connected with oil drainage main G4 respectively with the entrance of infuser oil outlet pump B7.

The roof of feed zone 2, upper extracting stage 3, lower extracting stage 4 and the section of draining 5 is respectively arranged below with the claw device 17 struck off by bed of material end face, claw device 17 includes claw body 17a, claw body 17a is provided with the horizontal lower edge tilted to supplied materials direction, uniformly connect on horizontal lower edge and have the rake teeth 17b of multiple insertion bed of material, the upper end of claw body 17a is suspended on claw trunnion axis 17c, the two ends of claw trunnion axis 17c are hinged on claw bearing 17d, and claw bearing 17d is fixed on infuser housing.Claw body 17a is suspended on claw trunnion axis 17c, bed of material top is struck off by the horizontal lower edge of claw body 17a, the thrust of the bed of material overcomes the deadweight of claw body 17a that its lower edge is raised up to certain altitude to reach poised state, rake teeth 17b inserts and forms the multiple tracks groove being parallel to each other in the bed of material on bed of material surface, be conducive to miscella flowing be uniformly distributed, fresh solvent or miscella spray permeate downwards on the surface of the bed of material, when miscella spray flux is slightly larger than infiltration capacity, bed of material surface can form liquid level, now miscella circulating load reaches maximum, also it is the proper states of technique setting, the horizontal lower edge of claw body 17a can avoid miscella along bed of material end face channelling, guarantee the effect of counter-current extraction.

The outer surface of infuser housing is evenly arranged with many outwardly housing ribs 21, the outer surface of infuser housing is separated into multiple square space by each housing rib 21, each square space is embedded with insulation material respectively, housing rib 21 had both improve the intensity of housing, the installation being easy to again insulation material is fixed, and is also convenient for the fixing of appearance eyelid covering.Housing rib height in the middle part of housing end face is higher than both sides, forms the state that middle high both sides are low so that housing end face will not hydrops after eyelid covering.

As shown in Fig. 7 and Figure 17, upper drive shaft 10 is driven by upper fluid pressure drive device 10a, lower drive shaft 11 is driven by lower fluid pressure drive device 11a, upper fluid pressure drive device 10a and lower fluid pressure drive device 11a is controlled by same hydraulic power unit 14, the oil-in of upper fluid pressure drive device 10a and lower fluid pressure drive device 11a is respectively by being connected with hydraulic oil fuel feeding house steward for oil inlet pipe, and the oil return opening of upper fluid pressure drive device 10a and lower fluid pressure drive device 11a is connected with hydraulic oil oil return house steward by oil returning branch pipe respectively.

Hydraulic power unit 14 includes hydraulic oil container 14a, hydraulic oil pump and three position four-way directional control valve 14h, hydraulic oil pump is driven by hydraulic oil pump motor, the Median Function of three position four-way directional control valve 14h is M type, the suction inlet of hydraulic oil pump is connected with the oil-out of hydraulic oil container 14a and is provided with oil absorption filter at the oil-out of hydraulic oil container 14a, hydraulic oil delivery side of pump is connected by the P mouth of check valve 14f and three position four-way directional control valve 14h, the T mouth of three position four-way directional control valve is connected with the oil return opening of hydraulic oil container 14a, the A mouth of three position four-way directional control valve is connected with hydraulic oil fuel feeding house steward, the B mouth of three position four-way directional control valve is connected with hydraulic oil oil return house steward.

It is provided with manual ball valve 14c and compensator 14d between suction inlet and the oil-out of hydraulic oil container 14a of hydraulic oil pump；Pressure oil filter 14g it is provided with between the P mouth of check valve 14f and three position four-way directional control valve 14h.

The top of hydraulic oil container 14a is communicated with air by air filter 14a1, and hydraulic oil container 14a sidewall is provided with liquid level liquid thermometer 14a2.

First pass through handle and three position four-way directional control valve 14h is switched to middle position, start hydraulic oil pump, hydraulic oil in hydraulic oil container enters hydraulic oil pump after oil absorption filter 14b filters, now directly turning on oil return due to the P mouth of three position four-way directional control valve with T mouth, the hydraulic oil of hydraulic oil pump output returns to hydraulic oil container and realizes the No Load Start of hydraulic oil pump motor.

When normally working, by handle, three position four-way directional control valve 14h is switched to right working position, hydraulic oil enters hydraulic oil fuel feeding house steward from the A mouth of three position four-way directional control valve, upper and lower fluid pressure drive device 11a is simultaneously entered by hydraulic oil fuel feeding house steward, drive shaft 10, lower drive shaft 11 synchronous axial system in driving, upper fluid pressure drive device 10a, the oil return of lower fluid pressure drive device 11a respectively enter hydraulic oil oil return house steward, enter the B mouth of three position four-way directional control valve from hydraulic oil oil return house steward, then return to hydraulic oil container from T mouth.

After infuser Start-up and Adjustment feeds on a small quantity, by handle, three position four-way directional control valve 14h can be switched to left station, it is achieved upper drive shaft 10, the rotating backward of lower drive shaft 11, but material is discharged from the discharging opening of head casing as early as possible.

As shown in figure 18, hydraulic oil pump motor M1 is controlled by converter VFD, is in series with circuit breaker Q M1 and thermorelay FC1 in major loop, and converter VFD is controlled by control loop.Control loop and use 24V unidirectional current, control between the both positive and negative polarity in loop, to be sequentially connected in series start button SB1, stop button SB2, the fault breaking-off contact of converter VFD, the time delay disconnection normally closed interlock KT1-1 of stall alert time-delay relay and mair motor and control the coil of relay K 1, the two ends of start button SB1 are parallel with mair motor and control the self-keeping contact K1-1 of relay, and the second normally open contact K1-2 of mair motor control relay is connected on the enabling signal input of converter VFD.

The level signals outfan of level position transducer LT is connected with the input end of analog signal AI of converter VFD, and the first signal source input AI1 of the analog signal output AO and comparator relay SSR of converter VFD is connected.The signal end outfan of speed measurement switch ZS of detection infuser chain pace is connected with the signal input part of velocity transducer SST, and the signal output part of velocity transducer SST is connected with the secondary signal source input AI2 of comparator relay SSR；It is connected to after the coils connected in series of the 3rd normally open contact K1-3 and stall alert time-delay relay KT1 that the comparison signal fault contact of comparator relay SSR and mair motor control relay between the both positive and negative polarity in control loop.The coil two ends of stall alert time-delay relay KT1 are parallel with stall alert display lamp H1.

Press start button SB1, mair motor controls the coil of relay K 1 and obtains electric, mair motor controls self-keeping contact's K1-1 adhesive self-insurance of relay, mair motor controls the second normally open contact K1-2 Guan Bi of relay makes converter VFD start driving hydraulic oil pump motor M1 rotation, and hydraulic power unit drives chain to advance by fluid power system.

The rotating speed of the level signals regulation hydraulic oil pump motor M1 that converter detects according to level position transducer LT, and actuating speed signal is supplied to the first signal source input of comparator relay SSR.Speed measurement switch ZS detects the actual pace of infuser chain, and chain actual speed signal is supplied to the secondary signal source input of comparator relay SSR by Negotiation speed transmitter SST；If there is bigger error with chain actual speed signal in actuating speed signal, the then comparison signal fault contact closure of comparator relay SSR, stall alert display lamp H1 lights, the coil of stall alert time-delay relay KT1 obtains electric simultaneously, the time delay of stall alert time-delay relay disconnects normally closed interlock KT1-1 time delay and disconnects, mair motor is made to control the coil losing electricity of relay K 1, mair motor controls the self-keeping contact K1-1 of relay, the 3rd normally open contact K1-3 of the second normally open contact K1-2 and mair motor control relay that mair motor controls relay simultaneously switches off, converter VFD quits work and makes ring chain halt.

When converter VFD self is out of order, the fault breaking-off contact of converter VFD disconnects and makes hydraulic oil pump motor M1 shut down.

It is connected to after the coils connected in series of the high charge level switch LT-H and high charge level alarm relay KT2 of level position transducer LT between the both positive and negative polarity in control loop, the coil two ends of high charge level alarm relay KT2 are connected to control after being parallel with the normally open contact KT2-1 of high charge level alarm lamp H2, high charge level alarm relay KT2 and forbidding the coils connected in series of supplied materials relay K 2 between the both positive and negative polarity in loop.Forbid that the coil two ends of supplied materials relay K 2 are parallel with and forbid supplied materials display lamp H5.When the bed depth in infuser is too high, trigger high charge level switch LT-H Guan Bi, high charge level alarm lamp H2 lights, the coil of high charge level alarm relay KT2 obtains electric simultaneously, the normally open contact KT2-1 Guan Bi of high charge level alarm relay KT2, make to forbid that the coil of supplied materials relay K 2 obtains electric, forbid that supplied materials display lamp H5 lights, send stopping charging signal to charging circuit.

Being connected to after the coils connected in series of the low stuff level switch LT-L and low material position alarm relay KT3 of level position transducer LT between the both positive and negative polarity in control loop, the coil two ends of low material position alarm relay KT3 are parallel with low material position alarm lamp H3.The normally closed interlock KT3-1 of low material position alarm relay KT3 is connected between the time delay disconnection normally closed interlock KT1-1 of stall alert time-delay relay and the coil of mair motor control relay K 1.When feeding mechanism break down so that the bed depth in infuser too low time, trigger low stuff level switch LT-L Guan Bi, low material position alarm lamp H3 lights, the coil of the lowest material position alarm relay KT3 obtains electric, the normally closed interlock KT3-1 time delay of low material position alarm relay KT3 disconnects, making mair motor control the coil losing electricity of relay K 1, converter VFD quits work and makes ring chain halt.

Super oil pressure alarm switch PT-H and low oil pressure alarm switch PT-L is installed on hydraulic oil fuel feeding house steward, super oil pressure alarm switch PT-H is connected to after connecting with hydraulic system fault display lamp H4 between the both positive and negative polarity in control loop, and low oil pressure alarm switch PT-L is in parallel with super oil pressure alarm switch PT-H after connecting with the 4th normally open contact K1-4 of mair motor control relay.When hydraulic oil fuel feeding house steward occurs superpressure, super oil pressure alarm switch PT-H Guan Bi makes hydraulic system fault display lamp H4 light；Mair motor control the 4th normally open contact K1-4 of relay be in attracting state i.e. hydraulic oil pump motor M1 be in running order time, if during the hypotony of hydraulic oil fuel feeding house steward, low oil pressure alarm switch PT-L Guan Bi also makes hydraulic system fault display lamp H4 light.

As shown in figure 19, comparator relay SSR includes power module, CPU, communication module, input module and relay driving module；DC24V is converted into DC 5V running voltage and is supplied to each module by power module；The two-way analogue signal that input module is transmitted by CPU is converted to digital signal, then result of calculation is compared judgement, if the error of two paths of signals value exceedes permissible value, then it is made to drive comparison signal fault contact action to relay driving module output low level；Communication module will be uploaded in host computer in download program to CPU or by the data in CPU and duty；The current signal of the two-way 4 ~ 20mA received is respectively converted into the voltage signal of 0 ~ 5V by input module, and delivers to the two-way input end of analog signal of CPU, simultaneously works as the effect of signal isolation；The low level control signal that relay driving module reception CPU sends here is gone forward side by side after row energization amplification, makes comparison signal fault contact produce closed action.

Communication module is by download program to CPU, first signal source input AI1 of input module receives the analogue signal of converter VFD output and i.e. drives analogue signal, the secondary signal source input AI2 of input module receives analogue signal and the chain actual pace analogue signal that velocity transducer SST sends here, the current signal of the two-way 4 ~ 20mA received is respectively converted into the voltage signal of 0 ~ 5V by input module, and delivers to two-way input end of analog signal P1.1 and P1.2 of CPU；Two-way DC0 ~ 5V analogue signal that input module is transmitted by CPU is converted to 10 position digital signals, calculate according to respective range, then result of calculation is compared judgement, if the error of two paths of signals value exceedes permissible value, P0.5 output low level delivers to relay driving module, and relay driving module drives comparison signal fault contact closure；Data in CPU and duty can be uploaded in host computer by communication module.

Power module uses LM7805 regulator block, and CPU uses STC15F2K60S2 single-chip microcomputer, and communication module uses MAX485 chip, and input module uses WS1521 signal isolator.Velocity transducer SST can use KFU8-FSSP-1 type, brand PEPPERL FUCHS P+F.

The extraction process of loop type extractor of the present invention, in turn includes the following steps:

(1) the oil plant embryo charging aperture 1a from buffer bin 1 top enters the right part of feed zone 2 and advances to the left, concentrated blend in right feed zone oil bucket 2e is delivered to drop down onto in left feed zone oil bucket 2d after left feed zone spray groove 2b sprays downwards by right feed zone circulating pump B5, miscella in left feed zone oil bucket 2d is delivered to drop back in right feed zone oil bucket 2e after right feed zone spray groove 2c sprays downwards by left feed zone circulating pump B6, right feed zone oil bucket 2e feed zone oil bucket 2d overflow to the left；

The wettest dregs of rice enter upper extracting stage 3 to be continued to be moved to the left, miscella in upper extracting stage oil bucket 3c is delivered to drop back in upper extracting stage oil bucket 3c after upper extracting stage spray groove 3b sprays downwards by upper extracting stage circulating pump B3, and upper extracting stage oil bucket 3c is by aqueduct 2a feed zone oil bucket 2e overflow to the right；

The wettest dregs of rice enter afterbody casing 7 from the left end of upper extracting stage 3, under falling by means of free gravity or being forced by poking device 18 to dial, along slide carriage 7d landing to lower layered material bed on after move right；Miscella in tail box body oils bucket 7c drops back into tail box body oils bucket 7c after being promoted and spray by afterbody casing circulating pump B4 on slide carriage 7d and afterbody casing lower floor material bed, the miscella in tail box body oils bucket 7c also by extracting stage oil bucket 3c in more line repairing pipe G2 entrances and by more line spray groove 3a spray on the left part bed of material of upper extracting stage 3；

The wettest dregs of rice are extracting stage 4 from afterbody casing 7 enters to the right, miscella in lower extracting stage oil bucket 4b is delivered to drop back in lower extracting stage oil bucket 4b after lower extracting stage spray groove 4a sprays downwards by lower extracting stage circulating pump B2, and lower extracting stage oil bucket 4b rearwardly casing oil bucket 7c overflow；

The wettest dregs of rice enter to the right the section of draining 5 from lower extracting stage 4, dilute miscella in the section of draining oil bucket 5c is delivered to drop back into after the left part of the section of draining 5 is sprayed by the section of draining spray groove 5b the section of draining oil bucket 5c, the section of draining oil bucket 5c downward extracting stage oil bucket 4b overflow by the section of draining circulating pump B1；Novel solvent drops back into the section of draining oil bucket 5c after being sprayed the middle part of the section of draining 5 by novel solvent spray groove 5a, the wettest dregs of rice continue to enter to the right draining without spray section of the section of draining 5 right part；

(6) the grouts after draining continue to enter to the right head casing 6, and the discharging opening 6a from head casing 6 bottom discharges.

Concentrated blend from step (1) the top overflow of left feed zone oil bucket 2d flow out, sent in one-level cyclone hydraulic separators H1 by infuser oil outlet pump B7 and remove thick impurity, enter back into two grades of cyclone hydraulic separators H2 and remove thin impurity, then the concentrated blend cleaned enters temporary storage tank T1, more mixed oil drawing pump B8 extracts out and enters vapo(u)rization system ZF from the bottom of temporary storage tank T1；The miscella discharged bottom described one-level cyclone hydraulic separators H1, two grades of cyclone hydraulic separators H2 and temporary storage tank T1 returns to right feed zone spray groove by return header G3, sprays the oil plant embryo having just enter into.

Step (2) in upper extracting stage oil bucket 3c be respectively equipped with multistage with upper extracting stage spray groove 3b, every grade of upper extracting stage oil bucket is gone up the upper extracting stage spray groove 3b that extracting stage circulating pump B3 extracts out and delivers to this grade accordingly, the upper extracting stage oil bucket overflow the most to the right of the upper extracting stage oil bucket in left side, the upper extracting stage oil bucket of the rightmost side is by aqueduct feed zone oil bucket 2e overflow to the right；Step (4) in lower extracting stage oil bucket 4b and lower extracting stage spray groove 4a be respectively equipped with multistage, every grade of lower extracting stage oil bucket is descended extracting stage circulating pump B2 to extract out accordingly and is delivered to the lower extracting stage spray groove 4a of this grade, the lower extracting stage oil bucket lower extracting stage oil bucket overflow the most to the left on right side, the lower extracting stage oil of the leftmost side struggles against rearwardly casing oil bucket 7c overflow.

The foregoing is only the preferable possible embodiments of the present invention, the non-scope of patent protection therefore limiting to the present invention.In addition to the implementation, the present invention can also have other embodiments.The technical scheme that all employing equivalents or equivalent transformation are formed, all falls within the protection domain of application claims.The present invention can pass through or use prior art to realize without the technical characteristic described, and does not repeats them here.

Claims

1. the extraction process of a loop type extractor, it is characterized in that, in turn include the following steps: (1) the oil plant embryo charging aperture from buffer bin top enters the right part of feed zone and advances to the left along upper strata screen, concentrated blend in right feed zone oil bucket is delivered to drop down onto in left feed zone oil bucket after left feed zone spray groove sprays downwards by right feed zone circulating pump, miscella in left feed zone oil bucket is delivered to drop back into after right feed zone spray groove sprays downwards in described right feed zone oil bucket by left feed zone circulating pump, and right feed zone oil struggles against feed zone oil bucket overflow to the left；The wettest dregs of rice enter upper extracting stage to be continued to be moved to the left, and the miscella in upper extracting stage oil bucket is delivered to drop back in upper extracting stage oil bucket after upper extracting stage spray groove sprays downwards by upper extracting stage circulating pump, and upper extracting stage oil bucket is by aqueduct feed zone oil bucket overflow to the right；The wettest dregs of rice enter afterbody casing from the left end of upper extracting stage, move right after dropping down onto on lower layered material bed along slide carriage free skating；Miscella in tail box body oils bucket drops back into tail box body oils bucket after being promoted and spray by afterbody casing circulating pump on slide carriage and afterbody casing lower floor material bed, and the miscella in tail box body oils bucket is entered upper extracting stage oil bucket also by more line repairing pipe and sprayed on the left part bed of material of upper extracting stage by more line spray groove；The wettest dregs of rice enter to the right lower extracting stage from afterbody casing, and the miscella in lower extracting stage oil bucket is delivered to drop back in lower extracting stage oil bucket after lower extracting stage spray groove sprays downwards by lower extracting stage circulating pump, and lower extracting stage oil struggles against rearwardly casing oil bucket overflow；The wettest dregs of rice enter to the right, from lower extracting stage, the section of draining, and the dilute miscella in the section of draining oil bucket is delivered to drop back into the section of draining oil after the left part of the section of draining is sprayed by the section of draining spray groove by the section of draining circulating pump and struggled against, the downward extracting stage oil bucket overflow of the section of draining oil bucket；Novel solvent drops back into the section of draining oil bucket after being sprayed the middle part of the section of draining by novel solvent spray groove, the wettest dregs of rice continue to enter to the right draining without spray section of the section of draining right part；(6) the grouts after draining continue to enter to the right head casing, and discharge from the discharging opening of head box bottom.

The extraction process of loop type extractor the most according to claim 1, it is characterized in that: concentrated blend from step (1) the top overflow of left feed zone oil bucket flow out, sent in one-level cyclone hydraulic separators by infuser oil outlet pump and remove thick impurity, enter back into two grades of cyclone hydraulic separators and remove thin impurity, then the concentrated blend cleaned enters temporary storage tank, then vapo(u)rization system evaporation is extracted and entered to mixed oil drawing pump out from the bottom of temporary storage tank；The miscella discharged bottom described one-level cyclone hydraulic separators, two grades of cyclone hydraulic separators and temporary storage tank returns to right feed zone spray groove by return header, sprays the oil plant embryo having just enter into.

The extraction process of loop type extractor the most according to claim 1, it is characterized in that: step (2) in upper extracting stage oil bucket be respectively equipped with multistage with upper extracting stage spray groove, every grade of upper extracting stage oil bucket is gone up the upper extracting stage spray groove that extracting stage circulating pump is extracted out and delivered to this grade accordingly, the upper extracting stage oil bucket overflow the most to the right of the upper extracting stage oil bucket in left side, the upper extracting stage oil bucket of the rightmost side is by the feed zone oil bucket overflow to the right of described aqueduct；Step (4) in lower extracting stage oil bucket be respectively equipped with multistage with lower extracting stage spray groove, every grade of lower extracting stage oil bucket is descended extracting stage circulating pump to extract out accordingly and is delivered to the lower extracting stage spray groove of this grade, the lower extracting stage oil bucket lower extracting stage oil bucket overflow the most to the left on right side, the lower extracting stage oil of the leftmost side struggles against rearwardly casing oil bucket overflow.

The extraction process of loop type extractor the most according to claim 1, it is characterized in that: described loop type extractor includes infuser housing and is positioned at the ring chain in infuser housing, multiple scraper plate is uniformly installed on described ring chain, described infuser housing is mutually spliced by described head casing, feed zone, upper extracting stage, lower extracting stage, the section of draining and described afterbody casing, the upper strata of described ring chain is positioned in described feed zone and upper extracting stage, the lower floor of described ring chain be positioned at described lower extracting stage with in the section of draining；The right output port of described feed zone is connected by the two ends up and down of flange with described head casing respectively with the right output port of the described section of draining, the left port of described upper extracting stage is connected by the two ends up and down of flange with described afterbody casing respectively with the left port of described lower extracting stage, the left port of described feed zone is connected by flange with the right output port of described upper extracting stage, and the right output port of described lower extracting stage is connected by flange with the left port of the described section of draining；Described buffer bin is connected to the right-hand member top of described feed zone, and described head casing, feed zone, upper extracting stage are respectively equipped with offgas outlet with the top of afterbody casing.

The extraction process of loop type extractor the most according to claim 4, it is characterised in that: the bottom of described head casing is provided with lower drive shaft, and described lower drive shaft is provided with lower sprocket, and the top of described head casing is provided with guider；The top of described afterbody casing is provided with drive shaft, in described upper drive shaft, upper sprocket wheel is installed, the bottom of described afterbody casing is provided with lower tensioning shaft, being provided with lower tightener sprocket on described lower tensioning shaft, described ring chain is successively around wrapping on described lower sprocket, upper guider, upper sprocket wheel and lower tightener sprocket；Described upper guider is slide rail or upper tightener sprocket；Described upper drive shaft is driven by upper fluid pressure drive device, described lower drive shaft is driven by lower fluid pressure drive device, described upper fluid pressure drive device and described lower fluid pressure drive device are controlled by same hydraulic power unit, described upper fluid pressure drive device is connected with hydraulic oil fuel feeding house steward by confession oil inlet pipe respectively with the oil-in of described lower fluid pressure drive device, and described upper fluid pressure drive device is connected with hydraulic oil oil return house steward by oil returning branch pipe respectively with the oil return opening of described lower fluid pressure drive device；Described hydraulic power unit includes hydraulic oil container, hydraulic oil pump and three position four-way directional control valve, described hydraulic oil pump is driven by hydraulic oil pump motor, the Median Function of described three position four-way directional control valve is M type, the suction inlet of described hydraulic oil pump is connected with the oil-out of described hydraulic oil container and is provided with oil absorption filter at the oil-out of hydraulic oil container, described hydraulic oil delivery side of pump is connected with the P mouth of described three position four-way directional control valve by check valve, the T mouth of described three position four-way directional control valve is connected with the oil return opening of described hydraulic oil container, the A mouth of described three position four-way directional control valve is connected with described hydraulic oil fuel feeding house steward, the B mouth of described three position four-way directional control valve is connected with described hydraulic oil oil return house steward.

The extraction process of loop type extractor the most according to claim 5, it is characterized in that: described upper drive shaft and described lower drive shaft are the most uniformly provided with multiple poking device, each described poking device includes surrounding amplexis the getting stuck of drive shaft or lower drive shaft periphery on described respectively, the periphery got stuck described in each is respectively symmetrically and is provided with the driving lever radially stretched out, and the end of each described driving lever is connected to be perpendicular to the blade of driving lever axis.

The extraction process of loop type extractor the most according to claim 4, it is characterized in that: described scraper plate extends along the fabric width direction of infuser, the two ends of described scraper plate are respectively fixedly connected with on the outer plate of described ring chain, described outer plate is hinged on the outside of inner plate by chain pin, the middle part of described chain pin is respectively installed with chain roller, and the top of described scraper plate is respectively fixed with wear-resistant slide block with the described corresponding position of chain roller；It is provided with described upper strata screen below the upper strata of described ring chain, described upper strata screen is embedded with and the upper strata slide rail of described chain roller contact；The lower section of lower floor's scraper plate is provided with lower floor's screen, and described lower floor screen is embedded with the lower floor's slide rail contacted with described wear-resistant slide block.

The extraction process of loop type extractor the most according to claim 5, it is characterised in that: described lower drive shaft is positioned on the right side of the underface of described upper guider, and described lower tensioning shaft is positioned on the left of the underface of described upper drive shaft；The right side of described upper drive shaft is provided with the slide carriage that the left end head with described upper strata screen docks mutually, the lower end of described slide carriage is tilted to the left, being provided with, between lower end and the described lower tensioning shaft of described slide carriage, the striker plate being tilted to the right, the lower end of described striker plate is arranged right below the blind plate docked with described lower-layer gate plate level.

The extraction process of loop type extractor the most according to claim 8, it is characterized in that: described novel solvent spray groove be positioned at described in the section of draining middle part roof below, the entrance of described novel solvent spray groove is connected with novel solvent pipe, the described section of draining spray groove be positioned at described in the section of draining left part roof below, described in the section of draining oil bucket be positioned at described in the section of draining screen below；Described lower extracting stage oil bucket is positioned at below the screen of described lower extracting stage, and described lower extracting stage spray groove is positioned at below the roof of described lower extracting stage；Described tail box body oils bucket is positioned at the bottom of described afterbody casing, described slide carriage upper end be arranged over self-loopa spray groove, lower floor's material of described afterbody casing is arranged over lower self-loopa spray groove, described more line spray groove is positioned at the lower section of described upper extracting stage left part roof, the bottom of described tail box body oils bucket is connected with the entrance of described afterbody casing circulating pump, and the outlet of described afterbody casing circulating pump is connected by the entrance of valve and described upper self-loopa spray groove, lower self-loopa spray groove and more line spray groove respectively；Described upper extracting stage oil bucket is positioned at below the screen of described upper extracting stage, and described upper extracting stage spray groove is positioned at below the roof of described upper extracting stage；Described more line repairing pipe is connected to the left side wall top of described upper extracting stage oil bucket, and the entrance of described more line repairing pipe is connected with the outlet of described afterbody casing circulating pump；Described left and right feed zone oil bucket is positioned at the left and right portion below described feed zone screen, described left and right feed zone spray groove is positioned at the left and right portion below described feed zone roof, the described upper extracting stage oil bucket of the rightmost side by described aqueduct to described right feed zone oil bucket overflow.

The extraction process of loop type extractor the most according to any one of claim 1 to 9, it is characterized in that: described feed zone, upper extracting stage, the roof of lower extracting stage and the section of draining is respectively arranged below with the claw device struck off by bed of material end face, described claw device includes claw body, described claw body is provided with the horizontal lower edge tilted to supplied materials direction, uniformly connect on described horizontal lower edge and have the rake teeth of multiple insertion bed of material, the upper end of described claw body is suspended on claw trunnion axis, the two ends of described claw trunnion axis are hinged on claw bearing, described claw bearing is fixed on described infuser housing.

The extraction process of 11. loop type extractors according to claim 5, it is characterized in that: described hydraulic oil pump motor (M1) is driven by converter (VFD), described converter (VFD) is controlled by control loop, start button (SB1) it has been sequentially connected in series between live wire and the zero line in described control loop, stop button (SB2), the fault breaking-off contact of described converter (VFD), the time delay of stall alert time-delay relay disconnects normally closed interlock (KT1-1) and the coil of mair motor control relay (K1), the two ends of start button (SB1) are parallel with mair motor and control the self-keeping contact (K1-1) of relay, second normally open contact (K1-2) of mair motor control relay is connected on the enabling signal input of described converter (VFD)；The level signals outfan of level position transducer (LT) is connected with the input end of analog signal (AI) of described converter (VFD), and the analog signal output (AO) of described converter (VFD) is connected with the first signal source input (AI1) of comparator relay (SSR)；The signal end outfan of speed measurement switch (ZS) of detection infuser chain pace is connected with the signal input part of velocity transducer (SST), and the signal output part of velocity transducer (SST) is connected with secondary signal source input (AI2) of comparator relay (SSR)；The comparison signal fault contact of described comparator relay (SSR) and mair motor are connected to after controlling the 3rd normally open contact (K1-3) of relay and the coils connected in series of described stall alert time-delay relay (KT1) between live wire and the zero line in control loop；It is connected to after the coils connected in series of high charge level switch (LT-H) and the high charge level alarm relay (KT2) of described level position transducer (LT) to control between live wire and the zero line in loop, between the normally open contact (KT2-1) of high charge level alarm relay (KT2) and the live wire and the zero line that are connected to control loop after forbidding the coils connected in series of supplied materials relay (K2)；Being connected to after the low stuff level switch (LT-L) of described level position transducer (LT) and the coils connected in series of low material position alarm relay (KT3) between live wire and the zero line in control loop, the normally closed interlock (KT3-1) of low material position alarm relay (KT3) is connected between time delay disconnection normally closed interlock (KT1-1) of stall alert time-delay relay and the coil of mair motor control relay (K1).

The extraction process of 12. loop type extractors according to claim 11, it is characterised in that: described comparator relay (SSR) includes power module, CPU, communication module, input module and relay driving module；DC24V is converted into DC 5V running voltage and is supplied to each module by described power module；The two-way analogue signal that described input module is transmitted by CPU is converted to digital signal, then result of calculation is compared judgement, if the error of two paths of signals value exceedes permissible value, then it is made to drive described comparison signal fault contact action to described relay driving module output low level；Described communication module will be uploaded in host computer in download program to CPU or by the data in CPU and duty；The current signal of the two-way 4 ~ 20mA received is respectively converted into the voltage signal of 0 ~ 5V by described input module, and delivers to the two-way input end of analog signal of CPU, simultaneously works as the effect of signal isolation；The low level control signal that described relay driving module reception CPU sends here is gone forward side by side after row energization amplification, makes described comparison signal fault contact produce closed action.