CN105053508A - Flash evaporation vacuum desolventizing machine - Google Patents
Flash evaporation vacuum desolventizing machine Download PDFInfo
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- CN105053508A CN105053508A CN201510491668.5A CN201510491668A CN105053508A CN 105053508 A CN105053508 A CN 105053508A CN 201510491668 A CN201510491668 A CN 201510491668A CN 105053508 A CN105053508 A CN 105053508A
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Abstract
The invention relates to a flash evaporation vacuum desolventizing machine. The flash evaporation vacuum desolventizing machine comprises a vertical barrel body, wherein a main feed opening is formed in the top of the barrel body, and a flash evaporation desolventizing segment, a vacuum desolventizing segment and a drying and cooling layer are sequentially arranged in an inner cavity of the barrel body from top to bottom; the flash evaporation desolventizing segment uses overheated solvent steam for performing flash evaporation and desolventizing on wet meal; the flash evaporation desolventizing segment comprises an upper flash evaporation desolventizing layer and a lower flash evaporation desolventizing layer which are respectively provided with a solvent steam interlayer; the vacuum desolventizing segment comprises multiple vacuum desolventizing layers which are sequentially superposed from top to bottom, bottom plates of the vacuum desolventizing layers are sequentially large round plates and small round plates from top to bottom, the large round plates and the small round plates are arranged at intervals, and the two bottom layers are used for allowing the large round plates to be arranged; an air interlayer is arranged under the bottom plates of the drying and cooling layer, a main rotating shaft is arranged in the axis of the barrel body, a stirring fin, a centrifugal shovelling board and a centripetal shovelling board of each layer are respectively fixed on the main rotating shaft, the lower end of the main rotating shaft is connected with the output shaft of a speed reducer, and the input shaft of the speed reducer is connected with a rotor shaft of an explosion-proof motor.
Description
Technical field
The present invention relates to a kind of edible bean cake process equipment, particularly relate to a kind of flash vacuum desolventizing machine.
Background technology
Containing very abundant phytoprotein in crude soya bean, wherein the highest with water-soluble protein content.Due to the easy heated denaturalization of protein, thus greatly reduce the use value of Soybean Meal.Carrying out low temperature desolventizing under lower than the denaturation temperature (80 DEG C) of protein can make the water-solubility protein in dregs of beans retain higher content.Low temperature desolventizing dregs of beans is commonly called as the important intermediate products that white peas or beans sheet is processing and eating soybean protein, can be made into various soy protein products through deep processing, as protein concentrate, protein isolate, histone and other functional soy albumen.Low temperature desolventizing can remove solvent the most up hill and dale, reduces production cost by recycling design, can also make the content that the water soluble protein in dregs of beans keeps higher.White peas or beans sheet is good with higher NSI (nitrogen solubility index) and complete laminated structure, the lower index such as residual molten, otherwise, lower with NSI, laminated structure destroyed, high, the residual molten height of fines content is bad.
Existing low temperature desolventizing technique is A, B cylinder precipitation, and wherein A cylinder is pre-precipitation, and the solvent (n-hexane) of 95-99% in the wet dregs of rice can be removed, B cylinder is whole precipitation, solvent strength can be down to 1200-1500ppm, is roughly equal to white peas or beans sheet 1.2-1.5kg solvent per ton.After quoad hoc, be difficult to reduce further containing molten amount in white peas or beans sheet, mainly B cylinder internal solvent steam is saturation state, solvent is caused to evaporate not thorough, white peas or beans sheet is bulk material simultaneously, and between sheet, gap is large, can hold 3kg air or 2.1 cubic metres of air between white peas or beans sheet gap per ton, if white peas or beans sheet is full of solvent vapo(u)r between gap, 8.0kg/ ton material can be reached.Process 1 ton of soybean in the industry at present, molten consumption, at 6-7kg, calculates by 1 ton of Soybean production, 0.7 ton of white peas or beans sheet, processes 1 ton of molten consumption of white peas or beans sheet and be about 8.6-10Kg, with coincideing of calculating above.
There is following weak point in traditional desolventizing machine: 1. precipitation chamber only has two, A cylinder and B cylinder airtight chamber internal solvent steam are difficult to form concentration gradient, barrel diameter is large, the solvent vapour that temperature is higher, density is less is easily along top area short-circuit cycle, not and fully heat exchange just discharges heat exchange chamber, causes precipitation not thorough; Residual molten height from the white peas or beans sheet that B cylinder is discharged, cannot reclaim containing a large amount of solvent vapo(u)r in white peas or beans sheet space, can only diffuse to air.
2. solvent stream can only contact with top layer material and the material kicked up, and most of solid accumulation, at cylinder body bottom, has no chance heat exchange; De-wet cake is deposited in cylinder body bottom, and bulk density is large, and material is mutually sheared, extruded under action of forced stirring, causes fines content to increase, and uses item matter and declines.
3. white peas or beans sheet drop temperature is at 60-62 DEG C, is rich in steam, and easily condensation forms water caking, and causes fines content in course of conveying to increase, and causes certified products yield to reduce.
4. the heat time is long, and in A, B cylinder, the heat time amounts up to 25-30 minute, is heated for a long time and causes soluble protein content to reduce, and uses item matter and declines.
5. level of integrated system is not high, individual equipment function singleness, and A, B cylinder low temperature desolventizing technique is shaped, is difficult to improve promote.
Increase C cylinder further precipitation if improve, solvent recovery amount can be increased, reduce molten consumption, but white peas or beans sheet fines content, NSI(nitrogen solubility index) etc. key index can reduce, product quality declines, and causes economic well-being of workers and staff to reduce.In addition, equipment, place investment can be increased, increase operating cost and production cost, so the necessity increasing C cylinder is inappropriate from income.Under the prerequisite ensureing product quality, effectively reducing the crucial costs such as the molten consumption of white peas or beans sheet, is problem demanding prompt solution in the industry.
Summary of the invention
The object of the invention is to, overcome problems of the prior art, provide a kind of flash vacuum desolventizing machine, integration degree is high, and operating cost is low.
For solving above technical problem, a kind of flash vacuum desolventizing machine of the present invention, comprises vertical cylindrical shell, and the top of described cylindrical shell is provided with combined feed mouth, and the inner chamber of described cylindrical shell is provided with flash distillation precipitation section, vacuum desolvation section and dry cooling layer from top to bottom successively; Described flash distillation precipitation section adopts overheated solvent vapo(u)r to carry out flash distillation precipitation to the wet dregs of rice.
Relative to prior art, the present invention achieves following beneficial effect: 1. the high wet cake that contains enters cylinder lumen from the combined feed mouth at cylindrical shell top, first through flash distillation precipitation section, overheated solvent vapo(u)r is adopted to carry out flash distillation precipitation as precipitation heat and mass carrier to the wet dregs of rice in flash distillation precipitation section, the high wet cake that contains is made to become low containing the molten dregs of rice, temperature 80 DEG C ~ 85 DEG C is become, in conjunction with the middle temperature dregs of rice that state solvent is vaporized not yet completely containing the molten dregs of rice again by low.The middle temperature dregs of rice enter vacuum desolvation section and realize the shallow bed of material from thermal evaporation, and under suction function, solvent vapo(u)r diffuser efficiency obviously increases, and the solvent in the middle temperature dregs of rice and moisture are able to rapid evaporation, and solvent strength is down to below 1000ppm, become the precipitation dregs of rice of 60 DEG C ~ 65 DEG C.The precipitation dregs of rice enter dry cooling layer, utilize air carry out drying to the precipitation dregs of rice and cool, and the dry cooled precipitation dregs of rice become the finished product dregs of rice and white peas or beans sheet, there will not be condensation and sizing, feed back phenomenon; Reduce the temperature of the finished product dregs of rice simultaneously, reduce the load of follow-up workshop section cooling.2. flash vacuum desolventizing machine device integration of the present invention is high, and single device substitutes A cylinder, B cylinder, vacuum desolvation machine and drying cooling device and promotes conveying equipment in a large number, can save power consumption 30%.3. significantly reduce the floor space of equipment, reduce the cost of wheeling of material, reduce the fines content of material, operating cost is low.4., in desolvation process, avoid material and lower the temperature because of conveying, be conducive to the evaporation of solvent vapo(u)r under negative pressure state, diffusion.5. improve white peas or beans sheet and go out quality, heated time is very brief, improves soluble protein index (NSI), eliminates the defective products such as caking, thus ensures the yield of the follow-up edible protein of high-quality.6. reduce the surface area of equipment, be conducive to insulation, heat loss is little.7. flash distillation precipitation section due to dregs of beans humidity high, the precipitation time is short, and therefore precipitation under the environment that temperature is higher, is conducive to raising the efficiency; The precipitation time of vacuum desolvation section is longer, and water capacity is low, under maintaining low-temperature vacuum environment, is conducive to the activity keeping protein.
As preferred version of the present invention, described flash distillation precipitation section comprises upper and lower two-layer flash distillation precipitation layer, described cylindrical shell level is cut off by the chassis of each described flash distillation precipitation layer respectively, solvent vapo(u)r interlayer is respectively equipped with below the chassis of each described flash distillation precipitation layer, the sidewall of described solvent vapo(u)r interlayer is connected to solvent vapo(u)r entrance, the chassis of each described flash distillation precipitation layer is evenly distributed with solvent vapo(u)r spray orifice, and the upper portion side wall of each described flash distillation precipitation layer is respectively equipped with solvent vapo(u)r outlet; Be arranged with respectively above the chassis of each flash distillation precipitation layer and material is evenly spread out the flash distillation precipitation layer stirring wing of cloth on chassis; The chassis of upper flash distillation precipitation layer is radially provided with the flash distillation precipitation layer discharge gate of downward flash distillation precipitation layer discharge, described flash distillation precipitation layer discharge gate place is provided with middle rotary valve; The bottom sidewall of lower flash distillation precipitation layer is provided with flash distillation precipitation section discharging opening.Containing molten 30%, temperature 50 C
high containing wet cakefirst fall on the chassis of flash distillation precipitation layer, the overheated solvent vapo(u)r of 150-160 DEG C enters solvent vapo(u)r interlayer from solvent vapo(u)r entrance, upwards spray from each solvent vapo(u)r spray orifice chassis with the speed of 30-36m/s, enter high containing in the space of wet cake to flow with the speed of 15-20m/s, with height containing wet cake direct contact heat transfer, thickness of feed layer 600-700mm, under the stirring action of ejection of solvent steam and flash distillation precipitation layer stirring wing, the high wet cake that contains is in fluidisation state or half fluidisation state, with solvent vapo(u)r forced-convection heat transfer, make to be down to less than 15% containing molten, become
low containing the molten dregs of rice, the solvent vapo(u)r of 75 DEG C is discharged from solvent vapo(u)r outlet.Then material enters lower flash distillation precipitation layer through middle rotary valve, and the overheated solvent vapo(u)r continuing to enter with injection carries out forced-convection heat transfer, and make to be down to less than 1% containing molten, but vaporize not yet completely in conjunction with state solvent, flash distillation precipitation dregs of rice temperature rises to 80-85 DEG C, becomes
the middle temperature dregs of rice, discharge from flash distillation precipitation section discharging opening and enter vacuum desolvation section.
As preferred version of the present invention, described vacuum desolvation section comprises stacked successively multi-layer vacuum precipitation layer from top to bottom, and the chassis of each described vacuum desolvation layer is followed successively by big disk from top to bottom, roundel interval arranges and the chassis of the two-layer vacuum desolvation layer of bottom is big disk; The periphery of each described big disk is connected on the inwall of described cylindrical shell, leaves gap between the periphery of each described roundel and the inwall of described cylindrical shell; Be respectively equipped with steam heating interlayer below the chassis of each described vacuum desolvation layer, the diapire of each described steam heating interlayer is connected to steam entry pipe and drip pipe; The top of each layer big disk except bottom is arranged with the centripetal flight carried by outer circumferential axle center by material respectively, and the axle center place of each layer big disk except bottom is respectively equipped with the vacuum desolvation layer discharge gate to lower floor's discharge; The top of bottom big disk and each layer roundel is arranged with the centrifugal flight carried to periphery by axle center by material respectively; The top of top layer vacuum desolvation layer is circumferentially provided with vacuum orifice and vacuum desolvation section feeding mouth, described flash distillation precipitation section discharging opening with lock cyclone rotary valve by first between described vacuum desolvation section feeding mouth and be connected; Be provided with live (open) steam jet pipe in the cavity space of bottom vacuum desolvation layer, the bottom sidewall of bottom vacuum desolvation layer is provided with vacuum desolvation section discharging opening.Vacuum orifice continues suction makes vacuum desolvation section negative pressure,
the middle temperature dregs of riceenter vacuum desolvation section feeding mouth by the first lock cyclone rotary valve and fall on the excircle of the big disk of top layer vacuum desolvation layer, centripetal flight does centripetal screw motion, material is spread out cloth also to shift to circle centre position gradually on big disk, material and steam heating interlayer indirect heat exchange in the process, stirring of flight makes material thermally equivalent, and under certain vacuum degree, continue evaporation in conjunction with state solvent.Material on big disk falls into the center of the roundel of lower floor from the vacuum desolvation layer discharge gate of circle centre position, centrifugal flight does centrifugal screw motion, material is spread out cloth also to move to outer planet gradually on roundel, material and the further indirect heat exchange of steam heating interlayer in the process, then material falls to lower one deck big disk from the periphery of roundel.Circulation like this, until material drops on the center of bottom vacuum desolvation layer.At bottom vacuum desolvation layer, live (open) steam jet pipe sprays into appropriate superheated vapour in bottom chamber, superheated vapour upwards with dregs of beans reverse flow, solvent vapo(u)r in dregs of beans gap is diluted, dividing potential drop reduces, promote to evaporate further from embryo sheet tissue in conjunction with state solvent, spread, realize very brief stripping.Spray into the negative pressure that water vapour amount must control make vacuum desolvation section maintain-2000 ~-3000mm water column, prevent wetting+hot two conditions occur simultaneously, under the prerequisite of precipitation of remaining valid, prevent white peas or beans sheet generation thermal denaturation.Material is under the promotion of the centrifugal flight of bottom, and continue and steam heating interlayer indirect heat exchange, the solvent in white peas or beans sheet and moisture are able to rapid evaporation, and solvent strength is down to below 1000ppm, and the precipitation dregs of rice generating 60 DEG C ~ 65 DEG C are discharged from vacuum desolvation section discharging opening.
As preferred version of the present invention, air blanketing is provided with below the chassis of described dry cooling layer, described air blanketing be circumferentially connected with cooling air import, described dry cooling layer chassis on be evenly distributed with air jet orifices, the upper portion side wall of described dry cooling layer is provided with cooling air outlet; The top of described dry cooling layer is circumferentially provided with dry cooling layer charging aperture, locks cyclone rotary valve be connected between described dry cooling layer charging aperture with described vacuum desolvation section discharging opening by second; Be arranged with respectively above the chassis of described dry cooling layer and material is evenly spread out the dry cooling layer stirring wing of cloth on chassis; The chassis of described dry cooling layer is radially provided with total discharging opening, and described total discharge outlet is provided with and rotates bin gate.First lock cyclone rotary valve and the second lock cyclone rotary valve can keep vacuum desolvation section to be negative pressure state,
the precipitation dregs of riceenter dry cooling layer charging aperture from the second lock cyclone rotary valve and fall into the chassis of dry cooling layer; According to moisture content and the temperature of the precipitation dregs of rice, cold wind is passed in air blanketing, evenly upwards spray from each air jet orifices, under the stirring action of dry cooling layer stirring wing, the precipitation dregs of rice are in fluidisation state or half fluidisation state again, with Forced Air Convection heat exchange, the drying of the precipitation dregs of rice is cooled to normal temperature, moisture content 8%, from total discharging opening with rotate bin gate and discharge continuously, complete solid phase desolvation process, obtain
the finished product dregs of rice.The finished product dregs of rice there will not be condensation, the group of rising and hygroscopic effect in follow-up workshop section, and stay in grade is excellent.
As preferred version of the present invention, axis along described cylindrical shell is provided with rotary main shaft, main shaft seal is respectively equipped with between described rotary main shaft and each layer, each described flash distillation precipitation layer stirring wing, centrifugal flight, centripetal flight and dry cooling layer stirring wing are separately fixed on described rotary main shaft, the lower end of described rotary main shaft is connected with the output shaft of reductor, and the power shaft of described reductor is connected with the armature spindle of fire-proof motor.Fire-proof motor drives reductor running, reductor drives rotary main shaft to rotate, rotary main shaft drives flash distillation precipitation layer stirring wing, centrifugal flight, centripetal flight and dry cooling layer stirring wing to rotate simultaneously, compact conformation, and material is being in fluidisation state or half fluidisation state, power of agitator consumes low, and white peas or beans sheet fines content is low.
As preferred version of the present invention, the circumferential wall of each described flash distillation precipitation layer, vacuum desolvation layer and dry cooling layer is separately installed with access door, visor and thermometer.
As preferred version of the present invention, described vacuum orifice place is provided with steam jet vavuum pump.Utilize Venturi effect, making the dry saturated steam of certain pressure walk to produce air-extraction function by forcibly pumped gas being carried secretly continuously during jet pipe at a high speed, there is no running gear, long service life, also there is no the consumption of pumping fluid, pollution-free; Its rate of air sucked in required is large, and pumping speed is fast; By the impact of evacuation medium dust-laden, water vapour and corrosion.
As preferred version of the present invention, the upper end of the valve body of described first lock cyclone rotary valve and described second lock cyclone rotary valve is connected with valve body charging aperture, the lower end of described valve body is connected with valve body discharging opening, the two ends, left and right of described valve body are closed by valve body end cap respectively, the inner chamber of described valve body is provided with impeller, the left and right sides of described impeller is respectively equipped with impeller end cap, the center of described impeller is fixed on impeller axle, the two ends of described impeller axle pass from the center of described valve body end cap respectively, realize sealing by valve body gland seal device between described impeller axle and described valve body end cap, the two ends of described impeller axle are supported on impeller bearing housing respectively, described impeller bearing housing is fixed on described valve body end cap respectively by impeller bearing housing support, described impeller entirety conically, the inner chamber of described valve body is taper hole and suitable with described impeller, one end of described impeller axle is provided with impeller axle sprocket wheel, the other end of described impeller axle is hinged with ball screw, described ball screw and described impeller axle coaxial line, the middle part of described ball screw is screwed in the axis hole of worm gear, described worm gear is meshed with worm shaft, and one end of described worm shaft is provided with handwheel.Material enters body cavity from the valve body charging aperture of top, and through vane rotary feeding, valve body discharging opening is from below discharged; Conical impeller coordinates with valve body taper hole, by improving the machining accuracy in Cone fit face, can realize zero clearance between valve body and impeller, realizes the effect of ' lock gas '.When the mating surface of impeller and valve body weares and teares, when causing air leakage to increase, make impeller to little end movement, mating surface gap reduces or eliminates, and realizes locking.If impeller coordinates tension with valve body, cause the frictional force between impeller and valve body excessive, when the lock cyclone rotary valve motor load that slows down is excessive, impeller can be made to large end movement adjusting play.Can ensure like this with lock container that cyclone rotary valve is connected in the pressure limit set continuously, stable operation, save mass energy, improve and quality.Drive worm shaft by handwheel, worm shaft drives worm gear wheel, and worm gear drives ball screw axial displacement, affects impeller axle to move along axis, makes to realize zero clearance between impeller and valve body.
As the further preferred version of the present invention, the tapering of described impeller is 3 ° ~ 5 °.
As the further preferred version of the present invention, described impeller axle sprocket wheel is in transmission connection by chain and drive sprocket, described drive sprocket is arranged on the output shaft of lock cyclone rotary valve reductor, and the power shaft of described lock cyclone rotary valve reductor is connected with the armature spindle of lock cyclone rotary valve motor.The running of lock cyclone rotary valve motor driven latch cyclone rotary valve reductor, the output shaft of lock cyclone rotary valve reductor drives drive sprocket to rotate, drive sprocket is by chain-driving impeller axle sprocket rotation, and impeller axle sprocket wheel impeller axle and vane rotary, realize feeding or discharge.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation, and accompanying drawing only provides reference and explanation use, is not used to limit the present invention.
Fig. 1 is the front view of flash vacuum desolventizing machine of the present invention.
Fig. 2 is the right view of Fig. 1.
Fig. 3 is the stereogram one of Fig. 1.
Fig. 4 is the stereogram two of Fig. 1.
Fig. 5 is the front view of lock cyclone rotary valve.
Fig. 6 is the top view of Fig. 5.
Fig. 7 is the stereogram of Fig. 5.
Fig. 8 is the three-dimensional cutaway view of Fig. 5.
In figure: 1. combined feed mouth; 2. flash distillation precipitation layer; 2a. solvent vapo(u)r interlayer; 2b. solvent vapo(u)r entrance; 2c. solvent vapo(u)r exports; 2d. flash distillation precipitation layer stirring wing; 2e. flash distillation precipitation layer discharge gate; 2f. flash distillation precipitation section discharging opening; 3. middle rotary valve; 4. the first lock cyclone rotary valve; 401. lock cyclone rotary valve motors; 402. lock cyclone rotary valve reductors; 403. impeller axle sprocket wheels; 404. impeller axles; 405. valve body gland seal devices; 406. valve body; 407. valve body charging apertures; 408. valve body discharging openings; 409. impeller; 409a. impeller end cap; 410. valve body end cap; 411. impeller bearing housings; 412. ball screw; 413. worm gear; 414. worm shaft; 415. handwheel; 416. impeller bearing housing supports; 417. sprocket wheel guard shields; 5. vacuum desolvation layer; 5a. steam heating interlayer; 5b. steam entry pipe; 5c. drip pipe; The centripetal flight of 5d.; The centrifugal flight of 5e.; 5f. vacuum desolvation section feeding mouth; 5g. vacuum desolvation section discharging opening; 5h. steam jet vavuum pump; 5j. live (open) steam jet pipe; 6. the second lock cyclone rotary valve; 7. dry cooling layer; 7a. air blanketing; The dry cooling layer charging aperture of 7b.; 7c. rotates bin gate; The import of 7d. cooling air; 7e. cooling air outlet; The dry cooling layer stirring wing of 7f.; 8. rotary main shaft; 9. desolventizing machine reductor; 10. fire-proof motor; 11. access doors; 12. visors; 13. thermometers.
Detailed description of the invention
As shown in Figures 1 to 4, flash vacuum desolventizing machine of the present invention comprises vertical cylindrical shell, and the top of cylindrical shell is provided with combined feed mouth 1, and the inner chamber of cylindrical shell is provided with flash distillation precipitation section, vacuum desolvation section and dry cooling layer 7 from top to bottom successively; Flash distillation precipitation section adopts overheated solvent vapo(u)r to carry out flash distillation precipitation to the wet dregs of rice.
The high wet cake that contains enters cylinder lumen from the combined feed mouth 1 at cylindrical shell top, first through flash distillation precipitation section, adopt overheated solvent vapo(u)r to carry out flash distillation precipitation as precipitation heat and mass carrier to the wet dregs of rice in flash distillation precipitation section, make the high wet cake that contains become low containing the molten dregs of rice, then become the middle temperature dregs of rice by low containing the molten dregs of rice.The middle temperature dregs of rice enter vacuum desolvation section and realize the shallow bed of material from thermal evaporation, and under suction function, solvent vapo(u)r diffuser efficiency obviously increases, and the solvent in the middle temperature dregs of rice and moisture are able to rapid evaporation, become the precipitation dregs of rice.The precipitation dregs of rice enter dry cooling layer 7, utilize air carry out drying to the precipitation dregs of rice and cool, and the dry cooled precipitation dregs of rice become the finished product dregs of rice and white peas or beans sheet, there will not be condensation and sizing, feed back phenomenon; Reduce the temperature of the finished product dregs of rice simultaneously, reduce the load of follow-up workshop section cooling.
Flash distillation precipitation section comprises upper and lower two-layer flash distillation precipitation layer 2, cylindrical shell level is cut off by the chassis of each flash distillation precipitation layer 2 respectively, solvent vapo(u)r interlayer 2a is respectively equipped with below the chassis of each flash distillation precipitation layer 2, the sidewall of solvent vapo(u)r interlayer 2a is connected to solvent vapo(u)r entrance 2b, the chassis of each flash distillation precipitation layer 2 is evenly distributed with solvent vapo(u)r spray orifice, and the upper portion side wall of each flash distillation precipitation layer 2 is respectively equipped with solvent vapo(u)r outlet 2c.
Be arranged with respectively above the chassis of each flash distillation precipitation layer 2 and material is evenly spread out the flash distillation precipitation layer stirring wing 2d of cloth on chassis.
The chassis of upper flash distillation precipitation layer is radially provided with the flash distillation precipitation layer discharge gate 2e of downward flash distillation precipitation layer discharge, flash distillation precipitation layer discharge gate 2e place is provided with middle rotary valve 3; The bottom sidewall of lower flash distillation precipitation layer is provided with flash distillation precipitation section discharging opening 2f.
Containing molten 30%, temperature 50 C
high containing wet cakefirst fall on the chassis of flash distillation precipitation layer, the overheated solvent vapo(u)r of 150-160 DEG C enters solvent vapo(u)r interlayer 2a from solvent vapo(u)r entrance 2b, upwards spray from each solvent vapo(u)r spray orifice chassis with the speed of 30-36m/s, with height containing wet cake direct contact heat transfer, thickness of feed layer 600-700mm, under the stirring action of ejection of solvent steam and flash distillation precipitation layer stirring wing 2d, the high wet cake that contains is in fluidisation state or half fluidisation state, with solvent vapo(u)r forced-convection heat transfer, make to be down to less than 15% containing molten, become
low containing the molten dregs of rice, the solvent vapo(u)r of 75 DEG C is discharged from solvent vapo(u)r outlet 2c.
Then material enters lower flash distillation precipitation layer through middle rotary valve 3, and the overheated solvent vapo(u)r continuing to enter with injection carries out forced-convection heat transfer, and make to be down to less than 1% containing molten, but vaporize not yet completely in conjunction with state solvent, flash distillation precipitation dregs of rice temperature rises to 80-85 DEG C, becomes
the middle temperature dregs of rice, discharge from flash distillation precipitation section discharging opening 2f and enter vacuum desolvation section.
Vacuum desolvation section comprises stacked successively multi-layer vacuum precipitation layer 5 from top to bottom, and the chassis of each vacuum desolvation layer 5 is followed successively by big disk from top to bottom, roundel interval arranges and the chassis of the two-layer vacuum desolvation layer of bottom is big disk.
The periphery of each big disk is connected on the inwall of cylindrical shell, leaves gap between the periphery of each roundel and the inwall of cylindrical shell; Be respectively equipped with steam heating interlayer 5a below the chassis of each vacuum desolvation layer 5, the diapire of each steam heating interlayer 5a is connected to steam entry pipe 5b and drip pipe 5c.
The top of each layer big disk except bottom is arranged with the centripetal flight 5d carried by outer circumferential axle center by material respectively, and the axle center place of each layer big disk except bottom is respectively equipped with the vacuum desolvation layer discharge gate to lower floor's discharge; The top of bottom big disk and each layer roundel is arranged with the centrifugal flight 5e carried to periphery by axle center by material respectively.
The top of top layer vacuum desolvation layer is circumferentially provided with vacuum orifice and vacuum desolvation section feeding mouth 5f, flash distillation precipitation section discharging opening 2f with lock cyclone rotary valve 4 by first between vacuum desolvation section feeding mouth 5f and be connected.
Be provided with live (open) steam jet pipe 5j in the cavity space of bottom vacuum desolvation layer, the bottom sidewall of bottom vacuum desolvation layer is provided with vacuum desolvation section discharging opening 5g.
Vacuum orifice continues suction makes vacuum desolvation section negative pressure,
the middle temperature dregs of riceenter vacuum desolvation section feeding mouth 5f by the first lock cyclone rotary valve 4 and fall on the excircle of the big disk of top layer vacuum desolvation layer, centripetal flight 5d does centripetal screw motion, material is spread out cloth also to shift to circle centre position gradually on big disk, material and steam heating interlayer 5a indirect heat exchange in the process, stirring of flight makes material thermally equivalent, and under certain vacuum degree, continue evaporation in conjunction with state solvent.Material on big disk falls into the center of the roundel of lower floor from the vacuum desolvation layer discharge gate of circle centre position, centrifugal flight 5e does centrifugal screw motion, material is spread out cloth also to move to outer planet gradually on roundel, material and the further indirect heat exchange of steam heating interlayer 5a in the process, then material falls to lower one deck big disk from the periphery of roundel.Circulation like this, until material drops on the center of bottom vacuum desolvation layer.
At bottom vacuum desolvation layer, live (open) steam jet pipe 5j sprays into appropriate superheated vapour in bottom chamber, superheated vapour upwards with dregs of beans reverse flow, solvent vapo(u)r in dregs of beans gap is diluted, dividing potential drop reduces, promote to evaporate further from embryo sheet tissue in conjunction with state solvent, spread, realize very brief stripping.Spray into the negative pressure that water vapour amount must control make vacuum desolvation section maintain-2000 ~-3000mm water column, prevent wetting+hot two conditions occur simultaneously, under the prerequisite of precipitation of remaining valid, prevent white peas or beans sheet generation thermal denaturation.
Material is under the promotion of the centrifugal flight 5e of bottom, and continue and steam heating interlayer 5a indirect heat exchange, the solvent in white peas or beans sheet and moisture are able to rapid evaporation, and solvent strength is down to below 1000ppm, generates
the precipitation dregs of ricedischarge from vacuum desolvation section discharging opening 5g.
Be provided with air blanketing 7a below the chassis of dry cooling layer 7, air blanketing 7a is circumferentially connected with cooling air import 7d, dry cooling layer 7 chassis on be evenly distributed with air jet orifices, the upper portion side wall of dry cooling layer 7 is provided with cooling air outlet 7e; The top of dry cooling layer 7 is circumferentially provided with dry cooling layer charging aperture 7b, locks cyclone rotary valve 6 be connected between dry cooling layer charging aperture 7b with vacuum desolvation section discharging opening 5g by second.
Be arranged with respectively above the chassis of dry cooling layer 7 and material is evenly spread out the dry cooling layer stirring wing 7f of cloth on chassis.
The chassis of dry cooling layer 7 is radially provided with total discharging opening, and total discharge outlet is provided with and rotates bin gate 7c.Rotate bin gate 7c and can adopt automatic material door disclosed in CN204009592U, can automatically adjust aperture size according to bed depth.Rotate bin gate 7c and can adopt automatic material door disclosed in CN204009592U, can automatically adjust aperture size according to bed depth.
First lock cyclone rotary valve 4 and the second lock cyclone rotary valve 6 can keep vacuum desolvation section to be negative pressure state,
the precipitation dregs of riceenter dry cooling layer charging aperture 7b from the second lock cyclone rotary valve 6 and fall into the chassis of dry cooling layer 7; According to moisture content and the temperature of the precipitation dregs of rice, cold wind is passed in air blanketing 7a, evenly upwards spray from each air jet orifices, under the stirring action of dry cooling layer stirring wing 7f, the precipitation dregs of rice are in fluidisation state or half fluidisation state again, with Forced Air Convection heat exchange, the drying of the precipitation dregs of rice is cooled to normal temperature, moisture content 8%, from total discharging opening with rotate bin gate 7c and discharge continuously, complete solid phase desolvation process, obtain
the finished product dregs of rice.The finished product dregs of rice there will not be condensation, the group of rising and hygroscopic effect in follow-up workshop section, and stay in grade is excellent.
Axis along cylindrical shell is provided with rotary main shaft 8, main shaft seal is respectively equipped with between rotary main shaft 8 and each layer, each flash distillation precipitation layer stirring wing 2d, centrifugal flight 5e, centripetal flight 5d and dry cooling layer stirring wing 7f are separately fixed on rotary main shaft 8, the lower end of rotary main shaft 8 is connected with the output shaft of desolventizing machine reductor 9, and the power shaft of desolventizing machine reductor 9 is connected with the armature spindle of fire-proof motor 10.Fire-proof motor 10 drives desolventizing machine reductor 9 to operate, desolventizing machine reductor 9 drives rotary main shaft 8 to rotate, rotary main shaft 8 drives flash distillation precipitation layer stirring wing 2d, centrifugal flight 5e, centripetal flight 5d and dry cooling layer stirring wing 7f to rotate simultaneously, compact conformation, and material is being in fluidisation state or half fluidisation state, power of agitator consumes low, and white peas or beans sheet fines content is low.
The circumferential wall of each flash distillation precipitation layer, vacuum desolvation layer 5 and dry cooling layer 7 is separately installed with access door 11, visor 12 and thermometer 13.
Vacuum orifice place is provided with steam jet vavuum pump 5h.Utilizing Venturi effect, making the dry saturated steam of certain pressure walk to produce air-extraction function by forcibly pumped gas being carried secretly continuously during jet pipe at a high speed.
As shown in Fig. 5 to Fig. 8, the upper end of the valve body 406 of the first lock cyclone rotary valve 4 and the second lock cyclone rotary valve 6 is connected with valve body charging aperture 407, the lower end of valve body 406 is connected with valve body discharging opening 408, the two ends, left and right of valve body 406 are closed by valve body end cap 410 respectively, the inner chamber of valve body 406 is provided with impeller 409, the left and right sides of impeller 409 is respectively equipped with impeller end cap 409a, the center of impeller 409 is fixed on impeller axle 404, the two ends of impeller axle 404 pass from the center of valve body end cap 410 respectively, realize sealing by valve body gland seal device 405 between impeller axle 404 and valve body end cap 410, the two ends of impeller axle 404 are supported on impeller bearing housing 411 respectively, impeller bearing housing 411 is fixed on valve body end cap 410 respectively by impeller bearing housing support 416, impeller 409 entirety conically, the tapering of impeller 409 is 3 ° ~ 5 °.The inner chamber of valve body 406 is taper hole and suitable with impeller 409.
Impeller axle sprocket wheel 403 is in transmission connection by chain and drive sprocket, drive sprocket is arranged on the output shaft of lock cyclone rotary valve reductor 402, the power shaft of lock cyclone rotary valve reductor 402 is connected with the armature spindle of lock cyclone rotary valve motor 401, and impeller axle sprocket wheel 403, chain and drive sprocket are covered with sprocket wheel guard shield 417.
One end of impeller axle 404 is provided with impeller axle sprocket wheel 403, the other end of impeller axle 404 is hinged with ball screw 412, ball screw 412 and impeller axle 404 coaxial line, the middle part of ball screw 412 is screwed in the axis hole of worm gear 413, worm gear 413 is meshed with worm shaft 414, and one end of worm shaft 414 is provided with handwheel 415.
Lock cyclone rotary valve motor 401 drives lock cyclone rotary valve reductor 402 to operate, the output shaft of lock cyclone rotary valve reductor 402 drives drive sprocket to rotate, drive sprocket is rotated by chain-driving impeller axle sprocket wheel 403, impeller axle sprocket wheel 403 impeller axle 404 and impeller 409 rotate, material enters body cavity from the valve body charging aperture 407 of top, through impeller 409 swivel feeding, valve body discharging opening 408 is from below discharged.Conical impeller coordinates with valve body taper hole, by improving the machining accuracy in Cone fit face, can realize zero clearance between valve body 406 and impeller 409, realizes the effect of ' lock gas '.
When the mating surface of impeller 409 with valve body 406 weares and teares, when causing air leakage to increase, worm shaft 414 is driven to rotate by rotating handwheel 415, worm shaft 414 drives worm gear 413 to rotate, worm gear 413 drives ball screw 412 along axis positive-displacement, affect impeller axle 404 and impeller 409 to little end movement, mating surface gap reduces or eliminates, and realizes locking.
If impeller 409 coordinates tension with valve body 406, cause the frictional force between impeller 409 and valve body 406 excessive, when lock cyclone rotary valve motor 1 load that slows down is excessive, worm shaft 414 is driven to rotate by rotating handwheel 415, worm shaft 414 drives worm gear 413 to rotate, worm gear 413 drives ball screw 412 along the reverse displacement of axis, makes impeller 409 to large end movement adjusting play.Can ensure like this with lock container that cyclone rotary valve is connected in the pressure limit set continuously, stable operation, save mass energy, improve and quality.
The foregoing is only the better possible embodiments of the present invention, non-ly therefore limit to scope of patent protection of the present invention.In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of application claims.The present invention can pass through without the technical characteristic described or adopt existing techniques in realizing, does not repeat them here.
Claims (10)
1. a flash vacuum desolventizing machine, comprises vertical cylindrical shell, and the top of described cylindrical shell is provided with combined feed mouth, it is characterized in that: the inner chamber of described cylindrical shell is provided with flash distillation precipitation section, vacuum desolvation section and dry cooling layer from top to bottom successively; Described flash distillation precipitation section adopts overheated solvent vapo(u)r to carry out flash distillation precipitation to the wet dregs of rice.
2. flash vacuum desolventizing machine according to claim 1, it is characterized in that: described flash distillation precipitation section comprises upper and lower two-layer flash distillation precipitation layer, described cylindrical shell level is cut off by the chassis of each described flash distillation precipitation layer respectively, solvent vapo(u)r interlayer is respectively equipped with below the chassis of each described flash distillation precipitation layer, the sidewall of described solvent vapo(u)r interlayer is connected to solvent vapo(u)r entrance, the chassis of each described flash distillation precipitation layer is evenly distributed with solvent vapo(u)r spray orifice, and the upper portion side wall of each described flash distillation precipitation layer is respectively equipped with solvent vapo(u)r outlet; Be arranged with respectively above the chassis of each flash distillation precipitation layer and material is evenly spread out the flash distillation precipitation layer stirring wing of cloth on chassis; The chassis of upper flash distillation precipitation layer is radially provided with the flash distillation precipitation layer discharge gate of downward flash distillation precipitation layer discharge, described flash distillation precipitation layer discharge gate place is provided with middle rotary valve; The bottom sidewall of lower flash distillation precipitation layer is provided with flash distillation precipitation section discharging opening.
3. flash vacuum desolventizing machine according to claim 2, it is characterized in that: described vacuum desolvation section comprises stacked successively multi-layer vacuum precipitation layer from top to bottom, the chassis of each described vacuum desolvation layer is followed successively by big disk from top to bottom, roundel interval arranges and the chassis of the two-layer vacuum desolvation layer of bottom is big disk; The periphery of each described big disk is connected on the inwall of described cylindrical shell, leaves gap between the periphery of each described roundel and the inwall of described cylindrical shell; Be respectively equipped with steam heating interlayer below the chassis of each described vacuum desolvation layer, the diapire of each described steam heating interlayer is connected to steam entry pipe and drip pipe; The top of each layer big disk except bottom is arranged with the centripetal flight carried by outer circumferential axle center by material respectively, and the axle center place of each layer big disk except bottom is respectively equipped with the vacuum desolvation layer discharge gate to lower floor's discharge; The top of bottom big disk and each layer roundel is arranged with the centrifugal flight carried to periphery by axle center by material respectively; The top of top layer vacuum desolvation layer is circumferentially provided with vacuum orifice and vacuum desolvation section feeding mouth, described flash distillation precipitation section discharging opening with lock cyclone rotary valve by first between described vacuum desolvation section feeding mouth and be connected; Be provided with live (open) steam jet pipe in the cavity space of bottom vacuum desolvation layer, the bottom sidewall of bottom vacuum desolvation layer is provided with vacuum desolvation section discharging opening.
4. flash vacuum desolventizing machine according to claim 3, it is characterized in that: below the chassis of described dry cooling layer, be provided with air blanketing, described air blanketing be circumferentially connected with cooling air import, described dry cooling layer chassis on be evenly distributed with air jet orifices, the upper portion side wall of described dry cooling layer is provided with cooling air outlet; The top of described dry cooling layer is circumferentially provided with dry cooling layer charging aperture, locks cyclone rotary valve be connected between described dry cooling layer charging aperture with described vacuum desolvation section discharging opening by second; Be arranged with respectively above the chassis of described dry cooling layer and material is evenly spread out the dry cooling layer stirring wing of cloth on chassis; The chassis of described dry cooling layer is radially provided with total discharging opening, and described total discharge outlet is provided with and rotates bin gate.
5. flash vacuum desolventizing machine according to claim 4, it is characterized in that: the axis along described cylindrical shell is provided with rotary main shaft, main shaft seal is respectively equipped with between described rotary main shaft and each layer, each described flash distillation precipitation layer stirring wing, centrifugal flight, centripetal flight and dry cooling layer stirring wing are separately fixed on described rotary main shaft, the lower end of described rotary main shaft is connected with the output shaft of reductor, and the power shaft of described reductor is connected with the armature spindle of fire-proof motor.
6. flash vacuum desolventizing machine according to claim 5, is characterized in that: the circumferential wall of each described flash distillation precipitation layer, vacuum desolvation layer and dry cooling layer is separately installed with access door, visor and thermometer.
7. flash vacuum desolventizing machine according to claim 3, is characterized in that: described vacuum orifice place is provided with steam jet vavuum pump.
8. flash vacuum desolventizing machine according to claim 3, it is characterized in that: the upper end of the valve body of described first lock cyclone rotary valve and described second lock cyclone rotary valve is connected with valve body charging aperture, the lower end of described valve body is connected with valve body discharging opening, the two ends, left and right of described valve body are closed by valve body end cap respectively, the inner chamber of described valve body is provided with impeller, the left and right sides of described impeller is respectively equipped with impeller end cap, the center of described impeller is fixed on impeller axle, the two ends of described impeller axle pass from the center of described valve body end cap respectively, realize sealing by valve body gland seal device between described impeller axle and described valve body end cap, the two ends of described impeller axle are supported on impeller bearing housing respectively, described impeller bearing housing is fixed on described valve body end cap respectively by impeller bearing housing support, described impeller entirety conically, the inner chamber of described valve body is taper hole and suitable with described impeller, one end of described impeller axle is provided with impeller axle sprocket wheel, the other end of described impeller axle is hinged with ball screw, described ball screw and described impeller axle coaxial line, the middle part of described ball screw is screwed in the axis hole of worm gear, described worm gear is meshed with worm shaft, and one end of described worm shaft is provided with handwheel.
9. flash vacuum desolventizing machine according to claim 8, is characterized in that: the tapering of described impeller is 3 ° ~ 5 °.
10. flash vacuum desolventizing machine according to claim 8 or claim 9, it is characterized in that: described impeller axle sprocket wheel is in transmission connection by chain and drive sprocket, described drive sprocket is arranged on the output shaft of lock cyclone rotary valve reductor, and the power shaft of described lock cyclone rotary valve reductor is connected with the armature spindle of lock cyclone rotary valve motor.
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CN114668163A (en) * | 2022-03-31 | 2022-06-28 | 山东凯斯达机械制造有限公司 | Soybean low-temperature softening pot and using method thereof |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN202164285U (en) * | 2011-06-21 | 2012-03-14 | 武汉九楚亘泰萃取技术有限公司 | Energy-saving continuous type wet meal desolvation machine |
CN102690719A (en) * | 2012-05-29 | 2012-09-26 | 郑州鼎盛机械设备有限公司 | Negative-pressure low-temperature desolventizing process for peanuts |
CN204949378U (en) * | 2015-08-12 | 2016-01-13 | 迈安德集团有限公司 | Flash distillation vacuum desolventizer |
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2015
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN202164285U (en) * | 2011-06-21 | 2012-03-14 | 武汉九楚亘泰萃取技术有限公司 | Energy-saving continuous type wet meal desolvation machine |
CN102690719A (en) * | 2012-05-29 | 2012-09-26 | 郑州鼎盛机械设备有限公司 | Negative-pressure low-temperature desolventizing process for peanuts |
CN204949378U (en) * | 2015-08-12 | 2016-01-13 | 迈安德集团有限公司 | Flash distillation vacuum desolventizer |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN114668163A (en) * | 2022-03-31 | 2022-06-28 | 山东凯斯达机械制造有限公司 | Soybean low-temperature softening pot and using method thereof |
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