CN110604944A - Low-temperature continuous extraction and concentration production unit device and method - Google Patents
Low-temperature continuous extraction and concentration production unit device and method Download PDFInfo
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- CN110604944A CN110604944A CN201910974021.6A CN201910974021A CN110604944A CN 110604944 A CN110604944 A CN 110604944A CN 201910974021 A CN201910974021 A CN 201910974021A CN 110604944 A CN110604944 A CN 110604944A
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- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/02—Solvent extraction of solids
Abstract
The invention relates to a low-temperature continuous extraction and concentration production unit device which comprises two groups of infiltration tanks, a transfer tank and a double-effect concentrator, wherein the infiltration tanks are arranged by converting negative pressure and normal pressure, the secondary steam output end at the top of each infiltration tank is communicated with the secondary steam input end of a condenser, the output end of the condenser is communicated with an oil-water separator, and the return end of the oil-water separator is connected with the top of each infiltration tank; the vacuum output end at the top of the infiltration tank is communicated with a vacuum pump, the bottom of the infiltration tank is provided with a feeder, and the bottom of the feeder is connected with the feed inlet of the extraction device; the liquid outlet of the extraction device is connected with the transfer tank; the output end of the transfer tank is communicated with the liquid inlet end of the double-effect concentrator through a guide pipe; solvent reflux end and the negative pressure backwash pump of double-effect concentrator link to each other, the output of negative pressure backwash pump respectively with the feed liquor mouth of pipe of solvent jar with extraction element's solvent feed inlet links to each other. The invention has reasonable structural design, and can greatly improve the production capacity and efficiency by continuous production.
Description
Technical Field
The invention relates to the technical field of production equipment, can be used for extraction in the production processes of processed foods, health-care products, botanical drugs, traditional Chinese medicines and the like, and particularly relates to a low-temperature continuous extraction and concentration production unit device and a method.
Background
In the production process of traditional Chinese medicines, botanical medicines, foods, health products and the like, extraction is a key process of production. At present, the domestic usually adopts an intermittent extraction production mode, so that the market mainly takes intermittent extraction equipment as the leading factor at present.
With the development of the market in the 21 st century, the existing production equipment has changed greatly, and improvements are mainly made on the aspects of energy conservation, consumption reduction and production efficiency. Meanwhile, some traditional intermittent production modes are changed in the traditional and modern production processes. Because of the fierce market competition, the importance of one-time investment and production running cost is gradually considered in the production link, and a continuous production mode is gradually accepted from the viewpoint of energy conservation and production running cost reduction to meet the continuously expanded demand of production (because the production process is difficult to change, the traditional production is difficult to accept, and the application in the fields of food, health care products, single medicines and the like is more at present).
At present, domestic continuous extraction production equipment is mostly in a multi-stage horizontal continuous stirring mode, the extraction equipment occupies larger space, has longer operation time, lower extraction efficiency and higher one-time investment and operation cost, and the low-temperature continuous extraction concentration production unit device is provided to overcome the defects so as to change the current production situation.
Disclosure of Invention
The invention provides a low-temperature continuous extraction and concentration production unit device and a low-temperature continuous extraction and concentration production method, which are convenient for adjusting the extraction angle and the spiral propulsion extraction speed, improve the production efficiency, reduce the production cost and realize continuous extraction, continuous concentration and continuous liquid discharge.
The invention comprises the following technical scheme: a low-temperature continuous extraction and concentration production unit device comprises an extraction device, a solvent tank, two groups of infiltration tanks with negative pressure and normal pressure conversion, a condenser, an oil-water separator, a transfer tank and a double-effect concentrator, wherein the secondary steam output end at the top of the infiltration tank is communicated with the secondary steam input end of the condenser, the output end of the condenser is communicated with the oil-water separator, and the return end of the oil-water separator is connected with the top of the infiltration tank; the vacuum output end at the top of the infiltration tank is communicated with a vacuum pump, the bottom of the infiltration tank is provided with a feeder, and the bottom of the feeder is connected with the feed inlet of the extraction device; the liquid outlet of the extraction device is connected with the transfer tank; the output end of the transfer tank is communicated with the liquid inlet end of the double-effect concentrator through a guide pipe; solvent reflux end and the negative pressure backwash pump of double-effect concentrator link to each other, the output of negative pressure backwash pump respectively with the feed liquor mouth of pipe of solvent jar with extraction element's solvent feed inlet links to each other.
Can be convenient for through the vacuum pump with two sets of infiltration jars take out to the vacuum, for the medicinal material in the infiltration jar provides the vacuum environment, be convenient for effectively extract the material. Through the alternate switching action between two sets of concentration evaporators in the double-effect concentrator, continuous single-effect and combined concentration action can be realized, continuous double-effect and single-effect concentration conversion action can be realized to meet the continuous production requirements of different specific gravity processes, continuous concentration, continuous liquid outlet and paste outlet are realized through double-effect and single-effect interconversion, and the production efficiency is improved.
The extraction device comprises a transmission device and a main box body, and a spiral extraction device is arranged in the main box body; the spiral extraction device comprises two spiral propelling paddles, and each spiral propelling paddle consists of a spiral shaft and a hollow blade; the two spiral shafts are arranged in parallel and are parallel to the main box body; each screw shaft is provided with blades, and the two groups of blades are arranged in a mirror image crossed manner. Two groups of spiral propeller mirrors are mutually crossed and stirred, so that the extraction efficiency is improved, the extraction time is shortened, and the production and operation cost is reduced. Compared with the traditional multistage horizontal continuous stirring device, the device occupies smaller space, saves space resources, reduces the investment of disposable equipment cost, and is more worthy of popularization and use. The paddle structure of fretwork makes dredging that the menstruum can be better, and the menstruum of being convenient for carries out countercurrent interaction with the material, can more effectively extract, has improved extraction rate.
An arc-shaped cavity is formed in the main box body; the section of the arc-shaped cavity is composed of two intersected circles with the radius of r, the distance between the centers of the two circles is √ 2r, and a spiral shaft is arranged at the center of the circle, wherein r is greater than 0. The section design of the arc-shaped cavity is convenient for the spiral propelling paddle to work, and the materials are stirred by the spiral propelling paddle in the arc-shaped cavity and are fully mixed with the solvent.
A solvent inlet distributor is arranged at the top of the main box body; one end of the main box body is provided with a liquid outlet box, the other end of the main box body is provided with a slag outlet box, and one end of the main box body, which is close to the slag outlet box, is provided with a solvent feed port; a heating jacket is arranged in the outer wall of the main box body; and a lifting device is arranged at the bottom of the main box body. The solvent flows reversely with the material in the box body of the extraction device, and the material is reversely pushed forward with the solvent under the action of the spiral pushing, so that the solvent can be more fully contacted with the material to accelerate the precipitation of the solute, and the extraction effect is improved. The extraction material and the liquid menstruum are heated by the heating jacket, so that the material is thermally precipitated at low temperature, and the extraction efficiency can be improved. And a lifting device is arranged at the bottom of the main box body. The angle of the box body of the extraction device is adjusted through the lifting device, so that the soaking amount of the materials is adjusted, more materials can be soaked by using less solvents conveniently, and the rapid extraction is facilitated. The angle of the box body of the extraction device is adjusted through the lifting device, so that the soaking amount of the materials is adjusted, more materials can be soaked by using less solvents conveniently, and the rapid extraction is facilitated.
The bottom of the feeder is connected with the feed inlet of the extraction device through a flexible hose; the slag discharging box is connected with the slag squeezing machine through a flexible hose. By adopting the telescopic hose, the influence on the connection between upstream and downstream equipment caused by angle adjustment can be reduced when the angle of the extracting device is adjusted.
The liquid discharge end of the slag squeezing machine is communicated with the liquid inlet end of the transfer tank through a guide pipe, and the liquid outlet of the extraction device is communicated with the liquid inlet end of the transfer tank through a guide pipe.
The double-effect concentrator is formed by combining single-effect concentrating equipment and combined concentrating equipment; the single-effect concentration equipment comprises a separation chamber and an external circulation heater; the combined concentration equipment comprises a spherical concentrator and an external circulation heater, wherein the lower part of the spherical concentrator is provided with a heating chamber, and the upper part of the spherical concentrator is provided with an evaporation chamber; the liquid outlet pipeline of the separation chamber is communicated with a liquid inlet pipeline of the combined concentration equipment; the liquid outlet pipeline of the external circulation heater of the combined concentration equipment is connected with the liquid inlet pipeline of the evaporation chamber; the evaporation chamber and the separation chamber are both connected with the transfer tank through a main communicating pipe.
The evaporation chamber is connected to the main communicating pipe through a first air duct; an external circulation heater in the combined concentration equipment is connected to the main communicating pipe through a second gas-guide pipe; the separation chamber is connected to the main communicating pipe through a third air duct; secondary steam valves are arranged on the second air duct, the first air duct and the main communicating pipe between the second air duct and the first air duct; and a gas-liquid separator is also arranged on the main communicating pipe between the second air duct and the first air duct.
The transfer tank conveys the extracted liquid medicine to the double-effect concentrator for continuously concentrating liquid or paste, and if the liquid medicine is continuously discharged, the extracting solution is conveyed to the double-effect concentrator through the main communicating pipeline for concentration; after the double-effect concentration is carried out for a certain time, the conversion of producing the extractum with large specific gravity by single-effect concentration or combined concentration is selected according to the concentration specific gravity requirement. When the process specific gravity is below 1.2, the double-effect concentration can meet the production requirement in each effect, for example, if a large-specific gravity extract is produced, related valves can be regulated and controlled to carry out liquid mixing to complete the process specific gravity requirement. When the continuous extraction and concentration production of large specific gravity is realized, the double-effect concentrated solution can be mixed into the combined concentration equipment at regular time, and then the paste is concentrated in the evaporation chamber according to the concentration specific gravity requirement.
When the continuous production is realized, a double-effect concentrator can be adopted to be converted into a single-effect concentrating device and a combined concentrating device for concentration respectively, and the single-effect concentrating device meets the requirements of extraction and concentration hot reflux production; one combined concentration equipment is used for producing the extractum with large specific gravity. When the double-effect concentration is required to be converted into single-effect and combined concentration, the conversion can be completed by opening and closing a secondary steam valve.
The bottom output end of the solvent tank is respectively communicated with the solvent feed inlet of the extraction device and the feed ends of the two groups of infiltration tanks; a liquid discharge end at the bottom of the solvent tank is provided with a flowmeter; the air inlet end of the solvent tank is communicated with an air compressor, and a pressure protection device is installed on the solvent tank. The flow meter can be used for conveniently adjusting and controlling the input quantity of the solvent, and the hot solvent can be provided for the extraction device or the infiltration tank according to the process requirement and the proportioning flow; compressed air is delivered into the solvent tank through an air compressor to increase the pressure in the solvent tank, so that the solvent is conveniently discharged according to a set proportion, and the discharge speed of the solvent can be adjusted; the constant production pressure is adjusted through the pressure protection device, and the flow of the flowmeter is adjusted through regulating and controlling the pressure to meet the process requirement.
And a vacuum regulating valve is arranged above the infiltration tank. The vacuum degree in the infiltration tank can be conveniently adjusted and the temperature in the tank can be controlled according to the requirements of the production process by the vacuum adjusting valve.
And a heating jacket is arranged on the outer side of the body of the infiltration tank. The heating jacket can rapidly heat the material in the infiltration tank.
A low-temperature continuous extraction and concentration production method uses the production unit device to complete the following steps:
the method comprises the following steps: quantitative weighing of materials: weighing the raw materials according to the extracted weight, placing the raw materials, and weighing a plurality of parts for later use;
step two: delivering the material in an infiltration tank, manually delivering or automatically delivering by a conveyer belt;
step three: soaking the raw materials, namely, after the raw materials are put into the two groups of soaking tanks, pumping the soaking tanks to a vacuum environment (the vacuum degree required by the process) through a vacuum pump, keeping the materials in the vacuum environment for a period of time (the time required by the process), introducing quantitative hot water required for extraction into the soaking tanks, introducing a heat source into a heating jacket, and soaking and heating for a period of time according to the process requirement;
step four: adjusting the angle, adjusting the angle of the main box body of the extraction device by adjusting the height of the lifting device, meeting the process requirement of the material soaking amount, and adjusting the stirring revolution to be matched with the feeding speed of the feeder;
step five: starting the feeder to continuously convey materials to the extraction device, sequentially and alternately conveying heated and infiltrated feed liquid to the extraction device through the two groups of infiltration tanks, extracting the input feed liquid through the extraction device, and quantitatively conveying a solvent to the extraction device through the solvent tank;
step six: liquid-slag separation and treatment: extracting to obtain extractive solution, transferring into a transfer tank, conveying the residue to a residue squeezing machine, squeezing, and distributing solvent in the soaking tank and the extraction device via a solvent tank at a certain ratio;
step seven: concentrating the extracting solution, wherein the transfer tank conveys the extracted liquid medicine to a double-effect concentrator for continuous concentration to obtain liquid or paste, and if the paste is continuously obtained, the extracting solution is conveyed to the double-effect concentrator through a main communicating pipe for concentration; after the double-effect concentration is carried out for a certain time, the conversion of producing the extractum with large specific gravity by single-effect concentration or combined concentration can be carried out according to the concentration specific gravity requirement. When the process specific gravity is below 1.2, the double-effect concentration can meet the production requirement in each effect, for example, if a large-specific gravity extract is produced, related valves can be regulated and controlled to carry out liquid mixing to complete the process specific gravity requirement. When the continuous extraction and concentration production of large specific gravity is realized, the double-effect concentrated solution can be mixed into the combined concentration equipment at regular time, and then the paste is concentrated in the evaporation chamber according to the concentration specific gravity requirement. When the continuous production is realized, double effects can be adopted to be converted into a single-effect concentration device and a combined concentration device for concentration respectively, and the single-effect concentration device meets the requirements of extraction and concentration hot reflux production; a combined concentration device is used for producing extractum with large specific gravity; when the double-effect concentration is required to be converted into single-effect and combined concentration, the conversion can be completed by opening and closing a secondary steam valve;
step eight: the solvent is recovered and thermally refluxed, the solvent is continuously evaporated, condensed and refluxed along with concentration to be timely supplemented and extracted, when the recovery temperature of the solvent tank is controlled to be about 80 ℃, the negative pressure reflux pump is used for regulating and controlling related valves (the solvent tank can be used for refluxing, or the negative pressure reflux pump can be used for directly refluxing and extracting) to continuously reflux and extract, so that the total thermal reflux production is realized, and the production process requirements are met.
The invention has the advantages and positive effects that the structural design is simple and reasonable:
1. the technical scheme provided by the invention can realize an intermittent production mode, and can also meet the process requirement of accelerating the rapid precipitation of different materials by mutually converting and infiltrating the two infiltrating tanks, thereby realizing a continuous production mode and improving the production efficiency.
2. The invention adopts the soaking tank to overcome the defect that special materials are difficult to extract, different materials can not be completely extracted in a short time when being extracted by the extracting device or because the characteristics of the materials are different, and the soaking tank is adopted to carry out pretreatment in advance, so that the extraction efficiency is improved.
3. The invention can realize continuous single-effect and combined concentration action by the alternate switching action between two groups of concentration equipment in the double-effect concentrator, can realize continuous double-effect and single-effect concentration conversion action to meet the production requirements of different specific gravity processes, and realizes continuous concentration, continuous liquid outlet and paste outlet by the mutual conversion of double-effect and single-effect, thereby improving the production efficiency.
4. The invention can realize the recycling of the solvent liquid, the solvent in the infiltration tank and the double-effect concentrator can be directly conveyed to the extraction device for use, the preheating effect on the solvent is reduced, the energy consumption is further reduced, and the temperature of the recovered solvent is about 80 ℃, so that the preheating is not needed.
5. The invention heats the extraction material and the liquid menstruum through the heating jacket, so that the material is thermally precipitated at low temperature (without damaging heat-sensitive substances), and the extraction efficiency can be further improved.
6. According to the invention, the two groups of infiltration tanks are vacuumized by the vacuum pump, so that a vacuum environment is provided for the medicinal materials in the infiltration tanks to destroy the molecular structures in the medicinal materials, and further the medicinal materials are rapidly infiltrated with a thermal solvent, and the materials are conveniently and effectively extracted.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic front view of the extraction device.
Fig. 3 is a schematic sectional structure of the main box of the extraction device.
FIG. 4 is a schematic view of the top surface of the main body of the extracting apparatus.
Fig. 5 is a schematic view of the main box section B-B of the extraction device.
Fig. 6 is a schematic view of the paddle structure of the extraction device.
Fig. 7 is a schematic view of the transmission of the extraction device.
In the figure, 1-support seat; 2-a hinged seat;
3-a transmission device, 31-a driving variable frequency speed regulating motor, 32-a speed reducer, 33-a gear box, 34-a driving gear, 35-a driven gear and 36-a supporting plate;
4-main box, 41-arc cavity, 43-liquid inlet distributor, 44-solvent liquid inlet pipe, 45-heating jacket, 46-solvent inlet;
5-a slag discharging box; 6-liquid outlet box and 61-liquid outlet;
7-a spiral extraction device, 71-a spiral shaft, 72-a paddle and 73-a connecting rod; 8-a lifting device;
9-extraction device, 90-extracting solution storage tank, 91-condenser, 92-oil-water separator, 93-solvent tank, 94-slag squeezing machine, 95-infiltration tank, 96-vacuum pump, 97-feeder, 98-transfer tank, 99-double effect concentrator; 991-main communicating pipe, 9911-secondary steam valve A, 9912-secondary steam valve B, 9913-secondary steam valve C, 9914-gas-liquid separator, 992-single-effect concentration equipment, 993-combined concentration equipment, 994-external circulation heater A, 995-external circulation heater B, 996-negative pressure reflux pump, 997-separation chamber and 998-spherical concentrator.
Detailed Description
To further clarify the disclosure of the present invention, its features and advantages, reference is made to the following examples taken in conjunction with the accompanying drawings.
Example 1: referring to the attached figures 1-7, a low-temperature continuous extraction and concentration production unit device comprises a condenser 91, an oil-water separator 92, an extraction device 9, a solvent tank 93, a residue squeezing machine 94, a transfer tank, a double-effect concentrator and two groups of infiltration tanks 95 arranged by converting negative pressure and normal pressure.
As shown in fig. 1, a vacuum regulating valve is arranged at the top of the infiltration tank 95; the solvent return end of the infiltration tank 95 is connected with the liquid outlet end of the condenser 91 through a conduit. The vacuum degree of the infiltration tank 95 can be conveniently adjusted according to the requirements of the production process by the vacuum adjusting valve; excess solvent from the infiltration tank 95 can be returned to the solvent tank 93 via a conduit.
The bottom flowing back end of menstruum jar 93 is provided with the flowmeter, and the inlet end of menstruum jar 93 passes through pipe intercommunication air compressor, install pressure protection device on the menstruum jar 93. Can be convenient for adjust control to the input of menstruum through the flowmeter, can provide hot menstruum for extraction element 9 or infiltration jar 95 according to the ratio flow according to the technological requirement through the flowmeter, carry compressed air in to menstruum jar 93 through air compressor, increase the pressure in menstruum jar 93, be convenient for discharge the menstruum according to the settlement proportion, can adjust the discharge velocity of menstruum, can be used for adjusting invariable production pressure through pressure protection device, adjust the flow that the flowmeter was adjusted to pressure through pressure protection device regulation and control to satisfy the technological requirement.
And a heating jacket is arranged on the outer side of the body of the infiltration tank 95. The heating jacket can rapidly heat the material in the infiltration tank. The top secondary steam output end of the infiltration tank 95 is communicated with the secondary steam input end of the condenser 91, the condenser 91 is communicated with the oil-water separator 92, and the return end of the oil-water separator 92 is connected with the top of the infiltration tank 95; the vacuum output end at the top of the infiltration tank 95 is communicated with a vacuum pump 96; the infiltration tank 95 is vacuumized by the vacuum pump 96 to provide a vacuum low-temperature environment for the materials in the infiltration tank 95, so that the liquid medicine can be conveniently extracted; the bottom of the infiltration tank 95 is provided with a feeder 97, and the bottom of the feeder 97 is connected with a feed inlet of the extraction device 9; liquid outlet 61 communicates with transfer tank 98, and transfer tank 98's output communicates with the feed liquor end of double-effect concentration ware 99, double-effect concentration ware 99's menstruum backward flow end and negative pressure backwash pump 996 the negative pressure backwash pump 996 end links to each other with the feed liquor mouth of pipe of menstruum jar 93 and the menstruum feed inlet 46 of extraction element 9 respectively.
The double-effect concentrator 99 is formed by combining a single-effect concentrating device 992 and a combined concentrating device 993; the single-effect concentration device 992 comprises a separation chamber 997 and an external circulation heater A994; the combined concentration device 993 comprises a spherical concentrator 998 and an external circulation heater B995, wherein the lower part of the spherical concentrator 998 is a heating chamber, and the upper part is an evaporation chamber; the liquid outlet pipeline of the separation chamber 997 is communicated with a liquid inlet pipeline of the combined concentration equipment 993; a liquid outlet pipeline of an external circulation heater of the combined concentration equipment 993 is connected with a liquid inlet pipeline of the evaporation chamber; the evaporation chamber and the separation chamber 997 are both connected with the transfer tank 98 through a main communicating pipe 991.
The evaporation chamber is connected to the main communicating pipe 991 through a first air duct; an external circulation heater B995 in the combined concentration equipment 993 is connected to a main communicating pipe 991 through a second gas-guide pipe; the separation chamber 997 is connected to the main communicating pipe 991 through a third gas-guide pipe; a secondary steam valve B9912 is arranged on the second air duct, a secondary steam valve C9913 is arranged on the first air duct, and secondary steam valves A9911 are arranged on main communicating pipes 991 between the second air duct and the first air duct; a gas-liquid separator 9914 is also arranged on the main communicating pipe 991 between the second air duct and the first air duct.
The transfer tank 98 conveys the extracted liquid medicine to the double-effect concentrator 99 for continuous concentration and liquid or paste discharging, and if the paste is continuously discharged, the extracting solution is conveyed to the double-effect concentrator 99 for concentration through the main communicating pipe 991; after the double-effect concentration is carried out for a certain time, the conversion of producing the extractum with large specific gravity by single-effect concentration or combined concentration is selected according to the concentration specific gravity requirement. When the process specific gravity is below 1.2, the double-effect concentration can meet the production requirement in each effect, for example, if a large-specific gravity extract is produced, related valves can be regulated and controlled to carry out liquid mixing to complete the process specific gravity requirement. When the continuous extraction and concentration production of large specific gravity is realized, the double-effect concentrated solution can be mixed into the combined concentration equipment at regular time, and then the paste is concentrated in the evaporation chamber according to the concentration specific gravity requirement.
When the continuous production is realized, the double-effect concentrator 99 can be adopted to be converted into a single-effect concentrating device 992 and a combined concentrating device 993 for concentration respectively, and the single-effect concentrating device 992 meets the extraction and concentration heat reflux production; a combined concentration device 993 produces the extract with large specific gravity. When the double-effect concentration is required to be converted into single-effect and combined concentration, the conversion can be completed by opening and closing a secondary steam valve: when the secondary steam valve A9911 is closed, the secondary steam valve B9912 and the secondary steam valve C9913 are opened, and the device carries out double-effect concentration production; when the secondary steam valve A9911 is opened, the secondary steam valve B9912 and the secondary steam valve C9913 are closed, and the device performs combined concentration production; the secondary steam valve a9911, the secondary steam valve B9912 and the secondary steam valve C9913 are in an interlocking relationship.
As shown in fig. 2-4, the extraction device 9 includes a support base 1, a hinge base 2, a transmission device 3, a main box 4, a slag discharging box 5, a liquid discharging box 6, a spiral extraction device 7 and a lifting device 8, wherein one end of the support base 1 is provided with the hinge base 2, and the other end is provided with the lifting device 7, and the top of the hinge base 2 is connected with the transmission device 3 and the main box 4; one end of the main box body 4 is provided with a liquid outlet box 6, the other end of the main box body is provided with a slag outlet box 5, the slag outlet box 5 is connected with a slag squeezing machine 94, an arc-shaped cavity 41 is arranged inside the main box body 4, and a spiral extraction device 7 is arranged in the arc-shaped cavity 41; the liquid outlet box 6 is positioned above the hinge base 2, and a liquid outlet 61 is formed in the bottom of the liquid outlet box 6; the spiral extraction device 7 comprises two spiral propelling paddles, each spiral propelling paddle consists of a spiral shaft 71 and paddles 72, the two spiral shafts 71 are arranged in parallel and are parallel to the main box body 4, each spiral shaft 71 is provided with the paddles 72, and the two groups of paddles 72 are arranged in a mirror-image crossed manner; the paddle 72 is hollow.
The lifting device 8 is a hydraulic push rod. The top both sides of main tank 4 are equipped with menstruum and advance liquid distributor 43, it connects menstruum inlet conduit 44 to advance liquid distributor 43 one end, and the lateral wall of rectangle cavity 42 is connected to the other end. A heating jacket 45 is arranged in the outer wall of the main box body 4, a solvent feed inlet 46 is arranged at one end of the main box body 4 close to the slag outlet box 5, the solvent feed inlet 46 is connected with a solvent feed pipe 44, and the solvent feed pipe 44 is connected with a liquid inlet distributor 43 through the heating jacket 45. The solvent inlet 46 and the solvent outlet 61 are both provided with valve switches.
The slag outlet box 5 is communicated with the feed end of the slag squeezing machine 94, and the feed inlet of the extraction device 9 is communicated with the feeder 97 at the discharge end of the infiltration tank 95 through flexible hoses. The connection problem can be avoided by the telescopic hose when the extraction device 9 is angularly adjusted.
As shown in fig. 5, an arc-shaped cavity 41 is arranged inside the main box 4, the cross section of the arc-shaped cavity 41 is composed of two intersected circles with the radius r, the distance between the centers of the two circles is √ 2r, the spiral shaft 71 is arranged at the center of the circle, and the r value is 150mm-200mm in the normal case.
As shown in fig. 6, the paddle 72 is spread out in the shape of a broken ring, and the paddle 72 is mounted on the screw shaft 71 through a connecting rod 73.
As shown in fig. 7, the transmission device 3 includes a driving variable-frequency speed-regulating motor 31, a speed reducer 32 and a gear box 33; the driving variable-frequency speed regulating motor 31, the speed reducer 32 and the gear box 33 are sequentially fixed on the supporting plate 36, and the supporting plate 34 is fixed at the top of the hinged seat 2. The power output end of the driving variable-frequency speed regulating motor 31 is connected with the input end of the speed reducer 32 through a coupler, and the output end of the speed reducer 32 is connected with the gear box 33. The gear box 33 is connected with the spiral extraction device 7, and the rear side of the driving gear 34 in the gear box 33 is meshed with the driven gear 35.
The invention also comprises a low-temperature continuous extraction and concentration production method, which uses the production unit device to complete the following steps: the method comprises the following steps: quantitative weighing of materials: weighing the raw materials according to the extracted weight, placing the raw materials, and weighing a plurality of parts for later use; step two: the material infiltration tank 95 delivers the material by manual delivery or automatic delivery by a conveyor belt; step three: soaking the raw materials, namely, after the raw materials are put into the two groups of soaking tanks 95, pumping the soaking tanks 95 to a vacuum environment (vacuum degree required by the process) through a vacuum pump 96, keeping the materials in the vacuum environment for a period of time (time required by the process), introducing quantitative hot water required for extraction into the soaking tanks 95, introducing a heat source into a heating jacket, and soaking and heating for a period of time according to the process requirement; step four: the angle of the extraction device 9 is adjusted, and the angle of the main box body 4 of the extraction device is adjusted by adjusting the height of the lifting device 8; the process requirement of the material soaking amount is met, and the stirring revolution is adjusted to be matched with the feeding speed of the feeder 97; step five: starting the feeder 97 to continuously convey the material to the extraction device 9, sequentially and alternately conveying the heated and soaked material liquid to the extraction device 9 through two groups of soaking tanks, extracting the input material liquid through the extraction device 9, and quantitatively conveying the solvent to the extraction device 9 through the solvent tank 93; step six: liquid-slag separation and treatment: the extracted extracting solution enters a transfer tank 98, the material slag is conveyed into a slag squeezing machine 94 for squeezing and rolling process treatment, and the menstruum in the infiltration tank 95 and the extracting device 9 is distributed according to a certain proportion through a menstruum tank 93; step seven: concentrating the extracting solution, wherein the transfer tank 98 conveys the extracted liquid medicine to the double-effect concentrator 99 for continuous concentration and liquid or paste discharging, and if the paste is continuously discharged, the extracting solution is conveyed to the double-effect concentrator 99 for concentration through the main communicating pipe 991; after the double-effect concentration is carried out for a certain time, the conversion of producing the extractum with large specific gravity by single-effect concentration or combined concentration can be carried out according to the concentration specific gravity requirement. When the process specific gravity is below 1.2, the double-effect concentration can meet the production requirement in each effect, for example, if a large-specific gravity extract is produced, related valves can be regulated and controlled to carry out liquid mixing to complete the process specific gravity requirement. When the continuous extraction and concentration production of large specific gravity is realized, the double-effect concentrated solution can be mixed into the combined concentration equipment at regular time, and then the paste is concentrated in the evaporation chamber according to the concentration specific gravity requirement. When the continuous production is realized, double effects can be adopted to be converted into a single-effect concentration device 994 and a combined concentration device 995 for concentration respectively, and the single-effect concentration device 994 meets the requirements of extraction and concentration hot reflux production; a combined concentration device 995 to produce extract with large specific gravity; when the double-effect concentration is required to be converted into single-effect and combined concentration, the conversion can be completed by opening and closing a secondary steam valve;
step eight: the solvent is recovered and thermally refluxed, the solvent is continuously evaporated, condensed and refluxed along with concentration to be timely supplemented and extracted, when the recovery temperature of the solvent tank 93 is controlled to be about 80 ℃, related valves (the solvent tank 93 can be used for refluxing, or the negative pressure reflux pump 996 can be used for directly refluxing and extracting) are regulated and controlled by the negative pressure reflux pump 996 to continuously reflux and extract, so that the total thermal reflux production is realized, and the production process requirements are met.
The working principle is as follows: different materials draw when through extraction element or because of the different so some materials of characteristic of material can not draw completely in the short time, need to increase infiltration jar and perfect the not enough of drawing, so increase oil water separator and condenser and carry out the recovery of fragrant oil in the middle of drawing the technology some materials simultaneously, satisfied promptly and drawn different technology demands and also adapted to some traditions and draw the production mode, infiltration jar can provide the environment of vacuum and low temperature heating for the material, can adapt to the needs of the material processing of more different varieties, has universality, and two sets of infiltration jars carry out material processing in turn, make this device both can carry out intermittent type formula extraction work, can realize continuous extraction work again.
When the invention is used, the medicinal raw materials are weighed and placed according to the extracted weight, and a plurality of parts are weighed for standby, then the materials are delivered manually or automatically by a conveyer belt, then the raw materials are fed into two groups of infiltration tanks, the infiltration tanks are pumped to a vacuum environment by a vacuum pump, adjusting to the vacuum degree corresponding to the process requirement according to the production process requirement, maintaining the material in the vacuum environment for a period of time (time required by the process), introducing quantitative hot solvent required for extraction into the infiltration tank, introducing heat source into the heating jacket on the infiltration tank, infiltrating and heating according to the time required by the process, meanwhile, the secondary steam generated in the infiltration tank is conveyed into a condenser, the condenser is convenient to heat to generate the secondary steam for condensation, meanwhile, some aromatic oil can be recovered through an oil-water separator, and light oil and heavy oil can be recovered at the same time; the method comprises the following steps of sequentially and alternately conveying heated and soaked feed liquid into an extraction device through two groups of soaking tanks, extracting input feed liquid through the extraction device, quantitatively conveying a solvent into the extraction device through a solvent tank, distributing the solvent in the soaking tanks and the extraction device according to a certain proportion through the solvent tank, conveying an extracted liquid obtained by extraction into a transfer tank, then conveying the extracted liquid into subsequent concentration equipment for concentration, conveying material slag into a slag extrusion machine for extrusion rolling process treatment, conveying residual liquid into the transfer tank, and conveying the medicine slag through manual transportation or automatic transportation through a conveying belt.
The transfer tank conveys the extracted liquid medicine to the double-effect concentrator for continuously concentrating liquid or paste, and if the liquid medicine is continuously discharged, the extracting solution is conveyed to the double-effect concentrator through the main communicating pipeline for concentration; after the double-effect concentration is carried out for a certain time, the conversion of producing the extractum with large specific gravity by single-effect concentration or combined concentration is selected according to the concentration specific gravity requirement. When the process specific gravity is below 1.2, the double-effect concentration can meet the production requirement in each effect, for example, if a large-specific gravity extract is produced, related valves can be regulated and controlled to carry out liquid mixing to complete the process specific gravity requirement. When the continuous extraction and concentration production of large specific gravity is realized, the double-effect concentrated solution can be mixed into the combined concentration equipment at regular time, and then the paste is concentrated in the evaporation chamber according to the concentration specific gravity requirement.
When the continuous production is realized, a double-effect concentrator can be adopted to be converted into a single-effect concentrating device and a combined concentrating device for concentration respectively, and the single-effect concentrating device meets the requirements of extraction and concentration hot reflux production; one combined concentration equipment is used for producing the extractum with large specific gravity. When the double-effect concentration is required to be converted into single-effect and combined concentration, the conversion can be completed by opening and closing a valve on a secondary steam pipeline.
When the infiltration tank is heated, the condenser condenses the generated secondary steam, the aromatic oil substances generated during infiltration are cooled and recovered, the extraction device is heated and uniformly stirred, the stirring stroke and the extraction time are greatly shortened, and the extraction efficiency of the extract is accelerated.
And (3) actual production data comparison:
a first table: comparison data of traditional extraction and continuous extraction (processing 300Kg per shift)
Table two: time comparison data (according to dosage 300Kg)
| Comparison of extraction and concentration | Working efficiency | Production efficiency |
| Traditional extraction and concentration production time | Over 7.5h | 1.1 specific gravity and high running cost |
| Continuous extraction and concentration production time | 2h | Dynamic production is improved by more than 3 times |
| Production efficiency | Increased by more than 3 times |
Table three: energy consumption comparison data (according to dosage 300Kg)
| Various energy consumptions (Water, electricity and gas) | Artificial operation | |
| Energy consumption of traditional extraction and concentration production | 6T、30Kw、8T | 2 |
| Energy consumption for continuous extraction and concentration production | 3T、20Kw、3T | 1 |
| Running cost | Is nearly 50 percent of the traditional Chinese medicine |
Table four: investment and return (configured according to 3m3 extraction)
While the preferred embodiments of the present invention have been illustrated and described, it will be appreciated by those skilled in the art that the foregoing embodiments are illustrative and not limiting, and that many changes may be made in the form and details of the embodiments of the invention without departing from the spirit and scope of the invention as defined in the appended claims. All falling within the scope of protection of the present invention.
Claims (10)
1. The utility model provides a low temperature draws concentrated production unit device in succession, includes extraction element, menstruum jar, two sets of negative pressures and infiltration jar, condenser, oil water separator, transfer tank and the double-effect concentration ware that the normal pressure conversion set up, its characterized in that: the secondary steam output end at the top of the infiltration tank is communicated with the secondary steam input end of the condenser, the output end of the condenser is communicated with the oil-water separator, and the return end of the oil-water separator is connected with the top of the infiltration tank; the vacuum output end at the top of the infiltration tank is communicated with a vacuum pump, the bottom of the infiltration tank is provided with a feeder, and the bottom of the feeder is connected with the feed inlet of the extraction device; the liquid outlet of the extraction device is connected with the transfer tank; the output end of the transfer tank is communicated with the liquid inlet end of the double-effect concentrator through a guide pipe; solvent reflux end and the negative pressure backwash pump of double-effect concentrator link to each other, the output of negative pressure backwash pump respectively with the feed liquor mouth of pipe of solvent jar with extraction element's solvent feed inlet links to each other.
2. The low-temperature continuous extraction and concentration production unit device according to claim 1, characterized in that: the extraction device comprises a transmission device and a main box body, and a spiral extraction device is arranged in the main box body; the spiral extraction device comprises two spiral propelling paddles, and each spiral propelling paddle consists of a spiral shaft and a hollow blade; the two spiral shafts are arranged in parallel and are parallel to the main box body; each screw shaft is provided with blades, and the two groups of blades are arranged in a mirror image crossed manner.
3. The low-temperature continuous extraction and concentration production unit device according to claim 2, characterized in that: a solvent inlet distributor is arranged at the top of the main box body; one end of the main box body is provided with a liquid outlet box, the other end of the main box body is provided with a slag outlet box, and one end of the main box body, which is close to the slag outlet box, is provided with a solvent feed port; the heating jacket is arranged in the outer wall of the main box body, and the lifting device is arranged at the bottom of the main box body.
4. The low-temperature continuous extraction and concentration production unit device according to claim 3, wherein: the bottom of the feeder is connected with the feed inlet of the extraction device through a flexible hose; the slag discharging box is connected with the slag squeezing machine through a flexible hose.
5. The low-temperature continuous extraction and concentration production unit device according to claim 4, wherein: the liquid discharge end of the slag squeezing machine is communicated with the liquid inlet end of the transfer tank through a guide pipe, and the liquid outlet of the extraction device is communicated with the liquid inlet end of the transfer tank through a guide pipe.
6. The low-temperature continuous extraction and concentration production unit device according to claim 1, characterized in that: the double-effect concentrator is formed by combining single-effect concentrating equipment and combined concentrating equipment; the single-effect concentration equipment comprises a separation chamber and an external circulation heater; the combined concentration equipment comprises a spherical concentrator and an external circulation heater, wherein the lower part of the spherical concentrator is provided with a heating chamber, and the upper part of the spherical concentrator is provided with an evaporation chamber; the liquid outlet pipeline of the separation chamber is communicated with a liquid inlet pipeline of the combined concentration equipment; the liquid outlet pipeline of the external circulation heater of the combined concentration equipment is connected with the liquid inlet pipeline of the evaporation chamber; the evaporation chamber and the separation chamber are both connected with the transfer tank through a main communicating pipe.
7. The low-temperature continuous extraction and concentration production unit device according to claim 6, wherein: the evaporation chamber is connected to the main communicating pipe through a first air duct; an external circulation heater in the combined concentration equipment is connected to the main communicating pipe through a second gas-guide pipe; the separation chamber is connected to the main communicating pipe through a third air duct; secondary steam valves are arranged on the second air duct, the first air duct and the main communicating pipe between the second air duct and the first air duct; and a gas-liquid separator is also arranged on the main communicating pipe between the second air duct and the first air duct.
8. The low-temperature continuous extraction and concentration production unit device according to claim 1, characterized in that: the bottom output end of the solvent tank is respectively communicated with the solvent feed inlet of the extraction device and the liquid inlet ends of the two groups of infiltration tanks; a liquid discharge end at the bottom of the solvent tank is provided with a flowmeter; the air inlet end of the solvent tank is communicated with an air compressor, and a pressure protection device is installed on the solvent tank.
9. The low-temperature continuous extraction and concentration production unit device according to claim 1, characterized in that: a vacuum adjusting valve is arranged above the infiltration tank and used for adjusting the vacuum degree and controlling the temperature; and a heating jacket is arranged on the outer side of the body of the infiltration tank.
10. A low-temperature continuous extraction and concentration production method is characterized in that the production unit device of any one of claims 1 to 9 is used for completing the following steps:
the method comprises the following steps: quantitative weighing of materials: weighing the raw materials according to the extracted weight, placing the raw materials, and weighing a plurality of parts for later use;
step two: delivering the material in an infiltration tank, manually delivering or automatically delivering by a conveyer belt;
step three: soaking the raw materials, namely, after the raw materials are put into the two groups of soaking tanks, pumping the soaking tanks to a vacuum environment (the vacuum degree required by the process) through a vacuum pump, keeping the materials in the vacuum environment for a period of time (the time required by the process), introducing quantitative hot water required for extraction into the soaking tanks, introducing a heat source into a heating jacket, and soaking and heating for a period of time according to the process requirement;
step four: adjusting the angle, adjusting the angle of the main box body of the extraction device by adjusting the height of the lifting device, meeting the process requirement of the material soaking amount, and adjusting the stirring revolution to be matched with the feeding speed of the feeder;
step five: starting the feeder to continuously convey materials to the extraction device, sequentially and alternately conveying heated and infiltrated feed liquid to the extraction device through the two groups of infiltration tanks, extracting the input feed liquid through the extraction device, and quantitatively conveying a solvent to the extraction device through the solvent tank;
step six: liquid-slag separation and treatment: extracting to obtain extractive solution, transferring into a transfer tank, conveying the residue to a residue squeezing machine, squeezing, and distributing solvent in the soaking tank and the extraction device via a solvent tank at a certain ratio;
step seven: concentrating the extracting solution, wherein the transfer tank conveys the extracted liquid medicine to a double-effect concentrator for continuous concentration to obtain liquid or paste, and if the paste is continuously obtained, the extracting solution is conveyed to the double-effect concentrator through a main communicating pipe for concentration; after the double-effect concentration is carried out for a certain time, the conversion of producing extractum with large specific gravity by single-effect concentration or combined concentration can be carried out according to the concentration specific gravity requirement; when the process specific gravity is below 1.2, the production requirement can be met in each effect of double-effect concentration, for example, if a large-specific gravity extract is produced, related valves can be regulated and controlled to carry out liquid mixing to complete the process specific gravity requirement; when the continuous extraction and concentration production of large specific gravity is realized, the double-effect concentrated solution can be mixed into the combined concentration equipment at regular time, and then the paste is concentrated in the evaporation chamber according to the concentration specific gravity requirement; when the continuous production is realized, double effects can be adopted to be converted into a single-effect concentration device and a combined concentration device for concentration respectively, and the single-effect concentration device meets the requirements of extraction and concentration hot reflux production; a combined concentration device is used for producing extractum with large specific gravity; when the double-effect concentration is required to be converted into single-effect and combined concentration, the conversion can be completed by opening and closing a secondary steam valve;
step eight: the solvent is recovered and thermally refluxed, the solvent is continuously evaporated, condensed and refluxed along with concentration to be timely supplemented and extracted, when the recovery temperature of the solvent tank is controlled to be about 80 ℃, the negative pressure reflux pump is used for regulating and controlling related valves (the solvent tank can be used for refluxing, or the negative pressure reflux pump can be used for directly refluxing and extracting) to continuously reflux and extract, so that the total thermal reflux production is realized, and the production process requirements are met.
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Cited By (1)
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