KR20070072636A - Continuous extruding extractor - Google Patents

Abstract

A continuous extrusion type extraction equipment which can obtain high extraction efficiency by continuously performing extracting and compressing operations, and can secure profitability in various extracting operations by enabling pressing and extraction to be continuously performed, thereby increasing productivity is provided. A continuous extrusion type extraction equipment comprises: an extraction material feeding part(1) which includes a hopper(11) and an extraction material inflow port(12), and feeds an extraction material to the extraction material introducing part of the extruder; a solvent feeding part(2) which includes a solvent storage tank(21) and a fixed quantity pressurization pump(23), and feeds a solvent to the extracting part of the extruder; an extruder(3) including a heating means(34) and a heat insulating means(35) for heating and temperature control, and diameter-reducing rings(331,332,333) fixed onto an inner portion of a shell(31) to form four spaces divided by the diameter-reducing rings such that the four spaces function as an extraction material introducing part, an extruding part, an extraction material compressing part and an extracted material discharging part respectively; and an extract recovery part(4) including an extract recovery drum(41) for recovering an extract discharged through an extract discharge port(311) formed in the shell, and an extract recovery tank(412) for storing the recovered extract.

Description

Continuous Extruding Extractor

1 is a cross-sectional view of a continuous extrusion extraction apparatus according to the present invention.

2 is a flow chart of the extraction process according to the present invention.

3 is an exploded perspective view of a specific portion of the compression pressing portion of the extruder according to the present invention.

Figure 4 is a cross-sectional view showing the operating principle of the continuous extrusion extraction apparatus according to the present invention.

* Explanation of symbols on main parts of drawings *

1. Autumn supply supply 2. Solvent supply

3. Extruder 4. Extract recovery part

11. Hopper 21. Solvent storage tank

23. Pressurized metering pump 31. Extruder shell

32. Extruder drive motor 34. Heating means

35. Insulation means 36. Additional discharger drive motor

41. Extraction container 311. Extraction outlet

331. Shell diameter reducing ring 363.

The present invention relates to a continuous extrusion extraction apparatus, and more particularly, while continuously supplying the target material (hereinafter referred to as 'injection') and the solvent to be extracted to a conventional extruder capable of heating and temperature control at a predetermined ratio. Transferred in the extruder, the solvent soluble in the extract is extracted by contact with the solvent in the extruder heated to the predetermined extraction temperature as described above to obtain the extract in a mixed state with the solvent, wherein the extraction proceeded or completed (Hereinafter referred to as 'extract residue') and the material mixed with the extract (hereinafter referred to as 'injection mixture') is extracted from the extruder through the extract outlet and separated from the extract by the compression action of the extruder. In addition, the cake extract is related to a continuous extraction apparatus using an extruder recovered by the extract residue.

In general, extraction is a technique in which a solvent is added to an extract having a liquid or solid phase to selectively transfer certain components in the extract to a solvent phase to separate it from other substances. As described above, when the extraction is an operation of selectively dissolving a specific component by adding a solvent to two or more liquid mixtures, the extraction is called liquid extraction or liquid extraction. The operation is an operation in which the extraction is a solid and the solvent selectively dissolves a specific component in the solid. In this case, it is classified as leaching or solid extraction. Therefore, in a strict sense, the present invention corresponds to a continuous leaching device or a solid extraction device using an extruder.

The extruder is mainly used for conveying a highly viscous fluid or powder, or an apparatus for heating, melting and mixing a polymer material, extruding it from a die or nozzle from a rotary extrusion blade to continuously obtain a molded product such as a pipe or short fibers.

In recent years, efforts are being made to recover useful materials from natural products such as plants and minerals and use them as foods, medicines, and chemical raw materials for the purpose of environmental conservation and energy resources.

Conventional extraction methods for recovering useful substances from natural products include steam distillation, solvent extraction, and compression. Among them, the compression method is simple in terms of apparatus and operation, but the yield is low, so it is usually used in parallel with steam distillation or solvent extraction. If steam distillation or solvent extraction is carried out under reduced pressure, a relatively good product can be obtained, but the process is more complicated, difficult to operate, and the distillation time is longer. Therefore, most extraction operations employ pressure extraction, but it is difficult to implement a continuous extraction process.

In order to solve this problem, the present invention utilizes the advantage of continuous feeding of the extruder and the solvent of the extruder, and provides a diameter reducing ring inside the shell of the extruder, and removes the blade at a specific distance of the diameter reducing ring to remove the blade. By providing a predetermined space to accumulate the transfer material to a high density to endure the high pressure generated at the extraction temperature above the solvent boiling point so that the solvent does not flow out, and after extraction in the extruder to be compressed in the same principle as above It is an object of the present invention to provide a continuous extrusion extraction apparatus in which an extract and an extract are separated through an extract outlet, and the operation can be performed continuously.

The present invention for achieving the above object is provided with a heating means and a heat insulating means on the outside of the extruder shell to remodel the blade and the shell in a conventional extruder that can control the extruder to a specific temperature, and the accompanying drawings For reference, it will be described with one preferred embodiment according to the present invention.

1 is a cross-sectional view of a continuous extrusion extraction apparatus according to the present invention, Figure 2 is a flow chart of the extraction process.

As shown, the continuous extrusion extraction apparatus according to the present invention can be divided into four parts, such as the extract supply unit (1), solvent supply unit (2), extruder (3), extract liquid recovery unit (4) according to the function and role have. The extraction supply part 1 consists of the hopper 11 and the extraction supply pipe 12. As shown in FIG. The hopper 11 functions to store the dead wood and supply it to the dead wood introduction portion of the extruder 3 through the dead wood supply pipe 12. The solvent supply unit 2 stores the solvent and supplies it to the extraction unit of the extruder 3 through the pressure metering pump 23. At this time, the ratio of the extract and the solvent supplied may vary depending on the extraction strategy. Extruder (3) can also be divided into four parts as follows, depending on the function and role. More specifically, the harvesting unit is directly supplied from the harvesting supply unit (1), the extraction unit for mixing the extraction and the solvent, the extraction unit is carried out extraction, the extraction unit and compression extracts compression unit for extracting and extract residue, the vertical weight of the separated It is the four parts, such as the extraction residue discharged to the outside of the extruder (3) using the extrusion method. The introduction portion is distinguished from the extraction portion by the shell diameter reducing ring 331. The shaft having a blade 322 by the extruder drive motor 32 is formed by forming a predetermined space A by not providing the blade on the shaft 321 by a predetermined position from the shell diameter reducing ring 331. As the 321 rotates, the spindle is densely accumulated in the space A and has a pressure resistance against the pressure generated in the extracting portion, and part of it is almost constant through the outlet narrowed by the shell diameter reducing ring 331. Transferred. The extraction material thus transferred to the extraction unit is mixed with the solvent supplied from the solvent supply unit 2, and the extraction operation is performed until the extraction material is transferred to the extraction compression unit. The extraction part and the presser compression part are also divided by the shell diameter reducing ring 332 in the same manner as described above, and the predetermined space is not provided by the blade diameter reducing ring 332 on the shaft 321 by a predetermined position. B) is formed to cause a bottleneck as in the space A so that the pressure resistance is made against the pressure generated in the extraction section. According to the same principle as the above, the pressing press portion is accumulated and compressed in the space C at a high density. At this time, the extract liquid separated from the extract by compression is dropped or leaked through the extraction liquid discharge port 311 provided on the extruder shell 31 or leaked through the extract liquid inlet pipe 411 finally. The recovery tank 412 is recovered. 3 is an exploded perspective view showing a specific portion of the extract pressing part and the extract recovery part 4 of the extruder 3 of the continuous extrusion extraction device according to the present invention. A drum-shaped extract liquid collecting container 41 is wrapped around the compression press, and the extract liquid collecting tube 41 is provided with an extract liquid inlet pipe 411 to recover the extract liquid to the extract liquid collecting tank 412. . Meanwhile, the extract outlet 311 may be formed by digging a hole or a straight groove in the extruder shell 41 located in the extract recovery container 41 and covering it with a piece of metal of a predetermined length, or by bending the extruder shell 41 inward. As the shark fin is in, it is possible to prevent the mulberry containing solvent from escaping out of the extruder shell 41. On the other hand, the weight residues escaping to the weight residue ejector through the diameter reducing ring 333 is discharged to the outside of the extruder 3 by the vertical extrusion screw 362 driven by the weight residue ejector drive motor 36. To help the understanding of the device, the above operation is performed continuously. 4 illustrates the operation principle of the continuous extrusion extraction apparatus according to the present invention as a cross-sectional view.

As described above, according to the continuous extraction type extraction apparatus according to the present invention, the extraction operation and the pressing operation is performed continuously to obtain a high extraction efficiency, by enabling continuous pressure extraction to increase productivity by the conventional economical It can be applied to various extraction operations to secure profitability.

Claims (5)

A crusher supply unit (1) comprising a hopper (11) and a crusher inlet (12) and supplying crusher to the crusher inlet of the extruder (3); A solvent supply unit 2 composed of a solvent storage tank 21, a pressurized metering pump 23, and the like and supplying a solvent to an extraction unit of the extruder 3; Heating and temperature control is possible by the heating means 34 and the heat insulating means 35, and three diameter reducing rings 331, 332 and 333 are fixedly installed in the shell 31 to be divided into the diameter reducing rings. An extruder (3) which forms four spaces and functions as a extract introduction part, an extracting part, a extract extracting part, and an extract residue part respectively; Extraction recovery section 4 for recovering the extraction liquid discharged through the extraction solution outlet 311 provided in the shell 31 from the extruder 3 recovery section to the extraction liquid recovery container 41 and stored in the extraction liquid recovery tank 412 Continuous extrusion extraction apparatus, characterized in that consisting of. The method of claim 1, The shell diameter reduction ring during the inferior conveyance due to the rotation of the blade 322 by forming a predetermined space (A, B, C) by removing the blades of a predetermined length in front of the three shell diameter reduction rings (331, 332, 333) ( 331, 332, 333) by accumulating the high density in the high density so as to withstand the pressure caused by the solvent generated in the extraction unit, the compression extraction unit characterized in that the compression is possible in the compression unit. The method of claim 1, Extraction outlet 311 is a continuous extrusion type extraction device, characterized in that the cylindrical or shark fin-shaped slot-shaped grooves covered by the inclined plate. The method of claim 1, Shell diameter reducing ring (331, 332, 333) is a continuous extrusion type extraction device, characterized in that the inclined portion is introduced in the form of a triangular rotating body. The method of claim 1, Continuous extraction type extractor, characterized in that the blade (362) is arranged vertically in order to forcibly discharge the cake residues discharged through the shell diameter reducing ring (333).

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