Natural product extraction equipment and discharging device

Abstract

The utility model provides natural product extraction equipment and a discharging device, the natural product extraction equipment comprises an extraction kettle, a discharging device and a flash tower, the extraction kettle is connected with the discharging device through an extraction kettle discharging pipeline, and the discharging device is connected with the flash tower through a filtering conveying pipeline; the discharging device comprises a transversely arranged blade type screw rod, the top of the blade type screw rod is connected with an extraction kettle discharging pipeline, one end of the blade type screw rod is provided with a discharging motor, the other end of the blade type screw rod is provided with a residue discharging pipe, the lower end of the residue discharging pipe is connected with a waste storage tank, and the bottom of the blade type screw rod is provided with a filter cartridge; the outlet of the filter cartridge is connected with a discharge tank, the bottom of the discharge tank is connected with a screw pump, and the outlet of the screw pump is connected with a filter conveying pipeline. The natural product extraction equipment can solve the problems of pollution and blockage caused by overflow and leakage of a solvent when effective components of a natural product are extracted and separated, and the extraction and separation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of extraction equipment, in particular to a natural product extraction equipment and a discharge device. Background Art

[0002] When extracting and separating the effective ingredients of natural products, solvent method, dialysis method, steam distillation method, ultrasonic extraction method, supercritical extraction, enzyme extraction, etc. are usually used. Among them, the commonly used solvents in the solvent method are methanol, ethanol, petroleum ether, gasoline, chloroform, ethyl acetate, etc. Although the solvent method has the advantages of simple method, low equipment requirements, and low cost, in the actual production process, the solvent is not only toxic, but also leaks into the air and causes great pollution. In addition, some are flammable and explosive items, which pose environmental and safety problems. In addition, since most of the raw materials are crushed plant roots, stems, leaves, seeds or their mixtures, and the solvent can only extract a small part of them, the remaining waste residue needs to be separated from the solvent. The conventional solid-liquid separation process is usually intermittent or open, which is not only inefficient but also causes a large amount of toxic and harmful gases to overflow, increasing safety risks.

[0003] In order to improve the efficiency of extracting and separating the effective components of natural products, the utility model patent with the authorization announcement number CN215939077U discloses a multifunctional combined natural product extraction device, including a support frame, a stirring tank and a hanger, a driving shaft is connected to a rotating mechanism, and a steering mechanism for driving the stirring tank to rotate is provided on the support frame. The device can realize self-rotation and orbital revolution at the same time, which promotes the full stirring of the medicinal liquid of the medicinal material and the precipitation and extraction of the medicinal material components. At the same time, the horizontal plate can be pushed by the set push mechanism, so that the rotating shaft can perform vertical reciprocating motion during the rotation process, so that the medicinal materials at different heights inside the stirring tank are fully stirred, which greatly improves the extraction efficiency, but the device does not solve the problem of toxic solvent spillage pollution. Utility Model Content

[0004] In order to avoid the overflow and pollution of toxic solvents when extracting and separating the effective components of natural products, solve the blockage problem during solid-liquid separation, and improve the efficiency of extraction and separation, the utility model provides a natural product extraction device, including an extraction kettle, a discharge device and a flash tower, wherein the extraction kettle is connected to the discharge device through an extraction kettle discharge pipeline, and the discharge device is connected to the flash tower through a filtering and conveying pipeline;

[0005] The discharging device includes a transversely arranged bladed screw rod, the top of the bladed screw rod is connected to the extraction kettle discharge pipe, one end of the bladed screw rod is provided with a discharging motor, the other end of the bladed screw rod is provided with a residue discharge pipe, the lower end of the residue discharge pipe is connected to a waste storage tank, the bottom of the bladed screw rod is provided with a filter cartridge, the outlet of the filter cartridge is connected to a discharging tank, the solution containing the extract is filtered by the filter cartridge and flows out from the outlet of the filter cartridge into the discharging tank, the bottom of the discharging tank is connected to a screw pump, and the outlet of the screw pump is connected to the filtration and conveying pipeline.

[0006] Based on the above, in order to recover the liquid filtered out by the blade screw rod to the greatest extent, the residue discharge pipe includes an upwardly inclined pipe section and a vertical section, the inclined pipe section is connected to the residue outlet of the blade screw rod, and the vertical section is connected to the inlet of the waste storage tank.

[0007] Based on the above, in order to improve the conveying efficiency, the screw pump is arranged horizontally.

[0008] Based on the above, in order to facilitate filtering and removing impurities from the product and avoid clogging, a first filter is provided on the filtering and conveying pipeline, and a second filter is provided at the bottom of the flash tower.

[0009] Based on the above, in order to achieve recycling, a solvent recovery device is also included, and the bottom of the flash tower is connected to the solvent recovery device through a second solvent recovery pipeline.

[0010] Based on the above, in order to be able to liquefy the unliquefied solvent, the solvent recovery device includes a solvent buffer tank, the outlet of the solvent buffer tank is connected to a solvent recovery tank, and a twin-screw vacuum pump is also arranged on the top of the solvent buffer tank, and the outlet of the twin-screw vacuum pump is connected to the solvent recovery tank.

[0011] Based on the above, in order to liquefy the vaporized solvent and achieve maximum solvent recovery, a condenser is provided on the top of the solvent recovery tank, and a centrifugal pump is provided at the bottom of the solvent recovery tank. The centrifugal pump is connected to the extraction kettle through a first solvent recovery pipeline, and the extraction kettle is connected to a steam generator.

[0012] Based on the above, in order to recover the heat in the equipment, a second hot gas recovery pipeline is provided on the upper part of the flash tower, and the second hot gas recovery pipeline is connected to the solvent buffer tank.

[0013] Based on the above, a first hot gas recovery pipeline is provided on the upper portion of the discharge tank, and the first hot gas recovery pipeline is connected to the solvent buffer tank.

[0014] The utility model also provides a discharging device, comprising a transversely arranged blade-type screw rod, a mixed material inlet is arranged at the top of the blade-type screw rod, a discharging motor is arranged at one end of the blade-type screw rod, a residue discharging pipe is arranged at the other end of the blade-type screw rod, the lower end of the residue discharging pipe is connected to a waste storage tank, the residue discharging pipe comprises an inclined pipe section and a vertical section inclined upward, the inclined pipe section is connected to the residue outlet of the blade-type screw rod, the vertical section is connected to the inlet of the waste storage tank, a filter cartridge is arranged at the bottom of the blade-type screw rod, the outlet of the filter cartridge is connected to a discharging tank, the bottom of the discharging tank is connected to a screw pump, and the outlet of the screw pump is connected to a filter conveying pipeline.

[0015] The utility model has substantial characteristics and progress compared with the prior art. Specifically, the natural product extraction equipment provided by the utility model can make the entire process flow under closed conditions when extracting and separating the effective components of natural products, avoiding direct exposure of solvents to the air, achieving safe and environmentally friendly production, and thus avoiding pollution caused by spillage of toxic solvents. At the same time, the discharge device in the equipment can perform operations such as compression and slag removal, without stopping work to remove residues, achieving continuous production and improving production efficiency, and the discharge device is provided with a filtering device to avoid clogging. In addition, the number of meshes of the filter in the discharge device can be changed according to the material conditions to ensure the filtering effect, solving the problems of difficult discharge of residues, difficult discharge, low yield, intermittent production, etc.

[0016] Furthermore, the solution in the device enters the flash tower from the tower top nozzle, and the solvent and product can be quickly separated by adjusting the feed rate and temperature. The system also operates at a relatively low temperature, especially for extracts containing heat-sensitive extracts, which can not only ensure product quality but also improve production efficiency.

[0017] Furthermore, the equipment can recycle the solvent and also recycle the heat energy, which not only solves the problems of high solvent consumption and environmental pollution, but also improves production capacity and reduces energy consumption. In addition, the recovered solvent first enters the buffer tank, the liquefied solvent is directly discharged into the solvent recovery tank, and the unliquefied solvent is liquefied by a twin-screw vacuum pump and discharged into the solvent recovery tank. At the same time, most of the heat energy is also stored in the solvent recovery tank along with the solvent. Since the solvent recovery tank is connected to the condenser, the vaporized solvent can be condensed and refluxed, further improving the solvent recovery rate.

[0018] Therefore, the equipment can solve the problem of solvent overflow, leakage, pollution and blockage when extracting and separating the effective components of natural products, and improve the efficiency of extraction and separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is a schematic diagram of the connection relationship of the natural product extraction equipment provided in Example 1 of the utility model.

[0020] Figure 2 This is a schematic diagram of the connection relationship of the natural product extraction equipment provided in Example 2 of the utility model.

[0021] Figure 3 This is a schematic diagram of the connection relationship of the natural product extraction equipment provided in Example 3 of the present utility model.

[0022] Figure 4 This is a schematic diagram of the connection relationship of the natural product extraction equipment provided in Example 4 of the present utility model.

[0023] Figure 5 It is a schematic diagram of the connection relationship of the discharge device provided in Example 5 of the utility model.

[0024] In the figure: 1. steam generator; 2. discharge tank; 3. screw pump; 4. waste storage tank; 5. discharge motor; 6. extraction kettle; 7. first filter; 8. second filter; 9. flash tower; 10. twin-screw vacuum pump; 11. external discharge pipe; 12. condenser; 13. solvent recovery tank; 14. centrifugal pump; 15. solvent buffer tank; 16. first solvent recovery pipe; 17. first hot gas recovery pipe; 18. second hot gas recovery pipe; 19. liquefaction recovery pipe; 20. blade screw; 21. residue discharge pipe; 22. second solvent recovery pipe; 23. filter conveying pipe; 24. extraction kettle discharge pipe. DETAILED DESCRIPTION

[0025] The technical solution of the utility model is further described in detail below through specific implementation methods.

[0026] Example 1

[0027] This embodiment provides a natural product extraction device, such as Figure 1 As shown, it includes an extraction kettle 6, a discharge device and a flash tower 9. The extraction kettle 6 is connected to the discharge device through an extraction kettle discharge pipe 24, and the discharge device is connected to the flash tower 9 through a filter delivery pipe 23.

[0028] The discharge device includes a blade screw 20 arranged transversely. The top of the blade screw 20 is connected to the extraction kettle discharge pipe 24. A discharge motor 5 is provided at one end of the blade screw 20, and a residue discharge pipe 21 is provided at the other end of the blade screw 20. The lower end of the residue discharge pipe 21 is connected to a waste storage tank 4, and a filter cartridge is provided at the bottom of the blade screw 20, and the outlet of the filter cartridge is connected to a discharge tank 2. The solution containing the extract is filtered by the filter cartridge and flows out from the outlet of the filter cartridge into the discharge tank. A screw pump 3 is connected to the bottom of the discharge tank 2, and the outlet of the screw pump 3 is connected to the filter delivery pipeline 23.

[0029] Specifically, in order to recover the liquid filtered by the blade screw rod to the maximum extent, the residue discharge pipe 21 includes an inclined pipe section and a vertical section that are inclined upward. The inclined pipe section is connected to the residue outlet of the blade screw rod 20, and the vertical section is connected to the inlet of the waste storage tank 4.

[0030] In this embodiment, the extraction kettle 6 is connected to the steam generator 1. In order to improve the conveying efficiency, the screw pump 3 is arranged horizontally. In order to facilitate the filtration and impurity removal of the product and avoid clogging, a first filter 7 is arranged on the filtration and conveying pipeline 23, and a second filter 8 is arranged at the bottom of the flash tower 9, and a solvent recovery pipeline 22 is arranged on the second filter 8.

[0031] Example 2

[0032] This embodiment provides a natural product extraction device, which is different from Embodiment 1 in that: Figure 2 As shown, a solvent recovery device is also included, and the bottom of the flash tower 9 is connected to the solvent recovery device through a second solvent recovery pipeline 22.

[0033] In order to liquefy the unliquefied solvent, the solvent recovery device includes a solvent buffer tank 15. The outlet of the solvent buffer tank 15 is connected to a solvent recovery tank 13, and a twin-screw vacuum pump 10 is also arranged on the top of the solvent buffer tank 15. The twin-screw vacuum pump 10 is connected to the solvent recovery tank 13 through a liquefaction recovery pipeline 19.

[0034] In order to liquefy the vaporized solvent and realize the maximum solvent recovery, a condenser 12 is provided on the top of the solvent recovery tank 13. An external discharge pipe 11 is provided on the top of the condenser 12. A centrifugal pump 14 is provided at the bottom of the solvent recovery tank 13, and the centrifugal pump 14 is connected to the extraction kettle 6 through a first solvent recovery pipe 16.

[0035] Example 3

[0036] This embodiment provides a natural product extraction device, which is different from Embodiment 2 in that: Figure 3 As shown, a second hot gas recovery pipeline 18 is provided on the upper portion of the flash tower 9 , and the second hot gas recovery pipeline 18 is connected to the solvent buffer tank 15 .

[0037] Example 4

[0038] This embodiment provides a natural product extraction device, which is different from Embodiment 2 in that: Figure 4 As shown, a first hot gas recovery pipeline 17 is provided on the upper portion of the discharge tank 2 , and the first hot gas recovery pipeline 17 is connected to the solvent buffer tank 15 .

[0039] Example 5

[0040] This embodiment provides a discharging device, such as Figure 5 As shown, it includes a blade screw 20 arranged transversely, and a mixed material inlet is arranged at the top of the blade screw 20. A discharge motor 5 is arranged at one end of the blade screw 20, and a residue discharge pipe 21 is arranged at the other end of the blade screw 20, and a waste storage tank 4 is connected to the lower end of the residue discharge pipe 21.

[0041] The residue discharge pipe 21 includes an inclined pipe section and a vertical section that are inclined upward, and the inclined pipe section is connected to the slag outlet of the blade screw 20. The vertical section is connected to the inlet of the waste storage tank 4. A filter cartridge is provided at the bottom of the blade screw 20, and the outlet of the filter cartridge is connected to the discharge tank 2. The bottom of the discharge tank 2 is connected to a screw pump 3, and the outlet of the screw pump 3 is connected to a filter delivery pipeline 23.

[0042] Specifically, taking the natural product extraction equipment provided in Example 4 as an example, the specific use steps and extraction and filtration process are as follows:

[0043] 1. Mix solvents such as petroleum ether and ethanol with raw materials such as Eucommia ulmoides and Helianthus annuus in a certain proportion and put them into an extraction kettle. The extraction kettle is equipped with a stirring system and a jacket on the outside of the extraction kettle. Use a steam generator to heat the water bath to a certain temperature and stir for a long time. Ultrasonic stirrers can be used for the extraction kettle to enhance the stirring quality and efficiency.

[0044] 2. The product obtained in step 1 enters the discharge device, and the blade-type screw conveys the product obtained in step 1 to the waste storage tank after continuous extrusion by the blades, and the solution containing the extract flows out from the discharge port after being filtered by the built-in filter cartridge and enters the discharge tank for buffering and deposition. After continuous extrusion by the blades, the effective solvent in the residue is greatly reduced, thereby increasing the acquisition rate of the solution containing the extract. At the same time, the risk of residue clogging the system is avoided. Because the waste storage tank for collecting the residue is also closed, the volatilization of the residual solvent can be avoided, and the collected residue is convenient for transportation and centralized treatment.

[0045] 3. The product obtained in step 2 is transported to the first filter through a screw pump for fine filtration. The first filter is a tortoise shell filter.

[0046] 4. The product obtained in step 3 enters the top of the flash tower and is sprayed vertically downward by the nozzle. According to the extraction of different natural products, water bath heating or microwave heating can be selected to keep the top of the tower at a high temperature, and then the solvent is completely recovered by a twin-screw vacuum pump, and the heat in the solvent is also recovered. The recovered hot solution is directly used for the next extraction cycle, thereby achieving energy saving, emission reduction and efficiency improvement. What remains is the desired final product; the bottom of the tower can be heated and cooled as needed, and the product is taken out through the discharge port at the bottom of the tower.

[0047] 5. In step 4, according to the extraction of different natural products, a second filter can be added at the bottom of the tower for further fine filtration. The filter net in the filter is detachable to facilitate the removal of the final product.

[0048] 6. The recycling part of the solvent includes: in the discharge tank in the discharge device in step 2, in the upper end of the flash tower in step 4, and in the solvent flowing out after filtration in step 5; the solvent is recovered in these three places by a twin-screw vacuum pump.

[0049] 7. The solvent recovered in step 6 is first put into the buffer tank, the liquefied solvent is directly discharged into the solvent recovery tank, and the unliquefied solvent is liquefied by a twin-screw vacuum pump and discharged into the solvent recovery tank. At the same time, most of the heat energy is also stored in the tank along with the solvent. Since the temperature and pressure in the tank are relatively high, the solvent recovery tank is connected to a condenser to condense and reflux the vaporized solvent; if the pressure in the tank is too high, the gas can be discharged through the nozzle to adjust the pressure in the tank.

[0050] 8. The solvent in the solvent recovery tank in step 7 is transported to the extraction kettle in step 1 through a centrifugal pump.

[0051] 9. In step 8, the centrifugal pump is also connected to the spray cleaning head of the extraction kettle to facilitate cleaning after shutdown.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A natural product extraction device, characterized in that: It includes an extraction kettle, a discharge device and a flash tower, wherein the extraction kettle is connected to the discharge device through an extraction kettle discharge pipeline, and the discharge device is connected to the flash tower through a filtering and conveying pipeline; The discharging device includes a transversely arranged bladed screw rod, the top of the bladed screw rod is connected to the extraction kettle discharge pipe, one end of the bladed screw rod is provided with a discharging motor, the other end of the bladed screw rod is provided with a residue discharge pipe, the lower end of the residue discharge pipe is connected to a waste storage tank, the bottom of the bladed screw rod is provided with a filter cartridge, the outlet of the filter cartridge is connected to a discharge tank, the bottom of the discharge tank is connected to a screw pump, and the outlet of the screw pump is connected to the filter conveying pipe.

2. The natural product extraction device according to claim 1, characterized in that: The residue discharge pipe comprises an inclined pipe section inclined upward and a vertical section, the inclined pipe section is connected to the residue outlet of the blade-type screw rod, and the vertical section is connected to the inlet of the waste storage tank.

3. The natural product extraction device according to claim 1, characterized in that: The screw pump is arranged transversely.

4. The natural product extraction device according to claim 1, 2 or 3, characterized in that: A first filter is arranged on the filtering and conveying pipeline, and a second filter is arranged at the bottom of the flash tower.

5. The natural product extraction device according to claim 1, 2 or 3, characterized in that: It also includes a solvent recovery device, and the bottom of the flash tower is connected to the solvent recovery device through a second solvent recovery pipeline.

6. The natural product extraction device according to claim 5, characterized in that: The solvent recovery device comprises a solvent buffer tank, the outlet of the solvent buffer tank is connected to a solvent recovery tank, a twin-screw vacuum pump is also arranged on the top of the solvent buffer tank, and the outlet of the twin-screw vacuum pump is connected to the solvent recovery tank.

7. The natural product extraction device according to claim 6, characterized in that: A condenser is arranged on the top of the solvent recovery tank, and a centrifugal pump is arranged on the bottom of the solvent recovery tank. The centrifugal pump is connected to the extraction kettle through a first solvent recovery pipeline, and the extraction kettle is connected to a steam generator.

8. The natural product extraction device according to claim 7, characterized in that: A second hot gas recovery pipeline is provided on the upper portion of the flash tower, and the second hot gas recovery pipeline is connected to the solvent buffer tank.

9. The natural product extraction device according to claim 8, characterized in that: A first hot gas recovery pipeline is disposed on the upper portion of the discharge tank, and the first hot gas recovery pipeline is connected to the solvent buffer tank.

10. A discharge device, characterized in that: It includes a transversely arranged blade screw rod, a mixed material inlet is arranged at the top of the blade screw rod, a discharge motor is arranged at one end of the blade screw rod, a residue discharge pipe is arranged at the other end of the blade screw rod, the lower end of the residue discharge pipe is connected to a waste storage tank, the residue discharge pipe includes an inclined pipe section and a vertical section inclined upward, the inclined pipe section is connected to the residue outlet of the blade screw rod, the vertical section is connected to the inlet of the waste storage tank, a filter cartridge is arranged at the bottom of the blade screw rod, the outlet of the filter cartridge is connected to a discharge tank, the bottom of the discharge tank is connected to a screw pump, and the outlet of the screw pump is connected to a filter conveying pipeline.

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