CN110694296B - Traditional Chinese medicine extraction device - Google Patents
Traditional Chinese medicine extraction device Download PDFInfo
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- CN110694296B CN110694296B CN201911007315.8A CN201911007315A CN110694296B CN 110694296 B CN110694296 B CN 110694296B CN 201911007315 A CN201911007315 A CN 201911007315A CN 110694296 B CN110694296 B CN 110694296B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/02—Solvent extraction of solids
Abstract
The invention discloses a traditional Chinese medicine extraction device, which comprises an extraction tank, a feeding assembly arranged at the upper part of the extraction tank and a filtering assembly arranged in the extraction tank, wherein a heating assembly is arranged below the filtering assembly, the heating assembly comprises an inner cylinder body, an outer cylinder body and an upper connecting plate used for connecting the upper end of the inner cylinder body and the upper end of the outer cylinder body, a lower connecting plate for connecting interior barrel lower extreme and outer barrel lower extreme, and many heat exchange tubes that are used for communicateing upper junction plate and lower connecting plate, interior barrel, outer barrel, form the heat transfer chamber between upper junction plate and the lower connecting plate, the heat transfer chamber is equipped with heating steam inlet and comdenstion water export, the distance of heat exchange tube upper end and inner barrel axis is greater than the distance of lower extreme and inner barrel axis, the bottom of extracting the jar is equipped with down the apron, be equipped with the washing liquid conveyer pipe on the apron down, both ends all are equipped with the washing shower nozzle about just in wearing to locate interior barrel. The invention has the advantages of simple structure, high extraction efficiency, convenient cleaning of the extraction tank, improved cleaning efficiency and the like.
Description
Technical Field
The invention relates to food and medicine leaching equipment, in particular to a traditional Chinese medicine extraction device.
Background
The extraction tank is a common leaching device in the pharmaceutical chemical industry, the common extraction tank is a vertical tank body, the upper part of the tank body is a seal head, the lower part of the tank body is a deslagging door, the tank body is provided with a heating jacket and a heat-insulating layer, the seal head is provided with a feed opening, the medicinal materials are added into the tank body from the feed opening, the solvent for extraction is added into the tank body after being metered, the medicinal materials are immersed, and components in the medicinal materials are dissolved out of the solvent, so that the leaching process is realized. The effective components in the medicinal materials exist in the cells of the medicinal materials, and the dissolution of the effective components in the medicinal materials follows the principle of molecular diffusion, namely, the molecules are transferred from a high-concentration area to a low-concentration area until the concentration is balanced. Therefore, the concentration difference between the inside and the outside of the cell wall of the medicinal material is increased, and the dissolution of molecules is facilitated. The molecular diffusion rate also increases with the increase of the temperature of the solvent, and the viscosity of the solvent can be reduced with the increase of the temperature, so that the molecular diffusion rate is further increased.
The extraction device applied at present mostly adopts a forced external circulation extraction technology, namely a liquid outlet pump is used for pumping the extracting solution out of the extraction tank and then pumping the extracting solution back into the extraction tank, and the purpose is to eliminate the phenomenon of uneven temperature distribution of the extracting solution in the tank, and to make the extracting solution flow, increase the concentration difference inside and outside cells and improve the dissolution rate. However, in the forced external circulation process, the medicine residues are easily blocked by the filtering structure in the extraction tank, so that the extraction liquid rate is reduced, the circulation amount is reduced, and finally the extraction liquid cannot be filtered out from the extraction tank. Furthermore, the liquid outlet pump is in an unstable working state due to the reduction and even blockage of the circulation volume, the mechanical seal of the liquid outlet pump is very easy to damage, and the maintenance cost is increased. Some extraction tanks are provided with mechanical stirring devices, and medicinal materials in the extraction tanks are fully contacted with the solvent through stirring, so that the dissolution rate is improved. However, mechanical agitation can cause other problems: firstly, the medicinal material decoction pieces can be cut into fine particles under the cutting action of the stirring paddle, so that the difficulty in filtering and clarifying the extracting solution is increased; secondly, the strong disturbance of the stirring paddle enables non-medicinal components in the medicinal materials to be dissolved out into the extracting solution, so that the difficulty of the later separation treatment of the extracting solution is increased; thirdly, the required stirring power is larger, and the energy consumption in the extraction process is increased. Some extraction tanks adopt a tank group type countercurrent extraction technology, namely a plurality of extraction tanks are combined, liquid medicine is extracted from one extraction tank and then added into the other extraction tank so as to increase the concentration difference inside and outside cell walls in the extraction process and improve the extraction rate, but the tank group countercurrent extraction also needs forced circulation and liquid guide operation of a liquid outlet pump, the risk of blockage of a filter screen of the extraction tank is increased, in addition, the amount of medicinal materials required by the tank group countercurrent extraction is large, and the extraction is not suitable for the extraction of small batches and multiple batches in the traditional Chinese medicine, and is difficult to popularize and apply. Some draw jars except that barrel section heating, also set up heating jacket on the head of tank bottoms row of sediment door, its purpose is through the heat transfer that bottom head heating jacket pressed from both sides the cover, makes tank internal temperature balanced, but receives and draws jar bottom head size and structure restriction, and its heated area is very little, and heat transfer effect is limited, and the phenomenon of tank internal temperature imbalance does not have big improvement in the practical application. Some draw jars except that barrel section heating, arrange the inside coiler type jacket that has set up of slag gate at the tank bottoms, the heat transfer effect sets up heating jacket on the head of slag gate at the tank bottoms and has improved, but the structure is complicated, need set up the annex of many support coiled pipes, causes the washing difficulty, is not conform to the sanitary requirement who draws the jar. Some extracting tanks are provided with a heating pipe directly inserted into the center of the tank body except for heating the cylinder body section, so that the phenomenon of uneven temperature from the tank wall of the extracting tank to the center of the tank can be improved through the heat transfer of the central heating pipe, but the temperature difference between the bottom and the upper part of the tank cannot be improved. Some extracting tanks are provided with a straight pipe type heating pipe set in a tank bottom slag discharge door, and the purpose is to enable the temperature in the tank to be consistent by increasing the heat transfer area of the bottom and the fluid flowing mode. However, an effective fluid circulation channel cannot be formed, the fluid is heated and then directly rushes upwards to cause an 'bumping' phenomenon, the liquid cannot be timely supplemented to the straight tube type heating tube set, a 'breathing' phenomenon is caused, and the 'bumping' phenomenon and the 'breathing' phenomenon can bring potential safety hazards to the use of the extracting tank. And the straight tube type heating tube group has no cleaning facility, is difficult to clean after being used and does not meet the sanitary requirement of the extraction tank.
In addition, in the filtration aspect of dregs of a decoction, what common draw the jar adopted is flat shape filter screen, the filter screen dress is in arranging the sediment door, the dregs of a decoction is on flat filter screen, the liquid medicine passes through the filter screen discharge and draws the jar, flat shape filter screen is easy to be makeed, but filter area is limited (can not exceed the biggest cross-sectional area of arranging the sediment door), often take place to block up, and flat shape filter screen compressive strength is low moreover, the filter plate is extremely easy to be stressed and warp in the filtering process, lead to the filter screen to collapse, the dregs of a decoction do not produce the jam risk through filtering direct entering next process. Moreover, a plurality of crossed supporting plates are welded in the cavity at the lower part of the filter screen, and some particles are easy to deposit in the supporting plates after use, so that the filter screen needs to be manually disassembled for cleaning each time, and the manual cleaning is time-consuming and labor-consuming; in the aspect of feeding of medicinal materials, a pneumatic manhole design is adopted at a common automatic feeding port of the extraction tank, a flange surface of the manhole is parallel to a ground plane, a connecting pipe of the manhole and the tank body is perpendicular to the flange surface of the manhole, and the feeding port is arranged at one side, close to a tank wall, of the top of the extraction tank. When throwing the material, the medicinal material gets into from the flange mouth, falls into in the jar after taking over, because the position of dog-house is not at the center of the jar body, can be eccentric after the medicinal material falls into the jar, throw material end back medicinal material can form the conical surface in jar wall one side, after adding the menstruum of extraction, the menstruum can't cover whole medicinal materials, and partial medicinal material exposes outside the menstruum, makes this part medicinal material can not obtain effectual extraction.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the traditional Chinese medicine extraction device which is simple in structure, high in extraction efficiency, convenient to clean an extraction tank and capable of improving the cleaning efficiency.
In order to solve the technical problems, the invention adopts the following technical scheme:
a traditional Chinese medicine extraction device comprises an extraction tank, a feeding component arranged on the upper part of the extraction tank and a filtering component arranged in the extraction tank, a heating component is arranged below the filtering component, the heating component comprises an inner cylinder body, an outer cylinder body, an upper connecting plate used for connecting the upper end of the inner cylinder body and the upper end of the outer cylinder body, a lower connecting plate used for connecting the lower end of the inner cylinder body and the lower end of the outer cylinder body, and a plurality of heat exchange tubes used for communicating the upper connecting plate and the lower connecting plate, a heat exchange cavity is formed among the inner cylinder, the outer cylinder, the upper connecting plate and the lower connecting plate, the heat exchange cavity is provided with a heating steam inlet and a condensed water outlet, the distance between the upper end of the heat exchange tube and the axis of the inner cylinder is larger than the distance between the lower end of the heat exchange tube and the axis of the inner cylinder, the bottom of the extraction tank is provided with a lower cover plate, and a cleaning liquid conveying pipe is arranged on the lower cover plate and penetrates through the inner barrel, and cleaning spray heads are arranged at the upper end and the lower end of the inner barrel.
As a further improvement of the above technical solution: the cleaning sprayer is connected with the cleaning liquid conveying pipe through a cleaning pipe, a check valve is arranged on the cleaning pipe, and the check valve is located between the cleaning sprayer and the cleaning liquid conveying pipe.
As a further improvement of the above technical solution: both ends all are equipped with a plurality of washing shower nozzles about the washing liquid conveyer pipe, it is a plurality of wash the shower nozzle along washing liquid conveyer pipe circumference evenly arranged.
As a further improvement of the above technical solution: the included angle between the heat exchange tube and the lower connecting plate is beta, and beta is more than 0 degree and less than or equal to 75 degrees.
As a further improvement of the above technical solution: the cross-sectional area of the inner cylinder is S1, the sum of the cross-sectional areas of all the heat exchange tubes is S2, and S1 is 0.8S 2-0.11S 2.
As a further improvement of the above technical solution: the filter assembly comprises a first filter screen, and a conical filter part is arranged on the first filter screen.
As a further improvement of the above technical solution: the conical filtering part is of a double-layer structure, a plurality of waist-shaped filtering holes are formed in the outer layer, a plurality of round filtering holes are formed in the inner layer, a second filtering net is arranged below the first filtering net, and a plurality of square filtering holes are formed in the second filtering net.
As a further improvement of the above technical solution: the cone angle corresponding to the cone-shaped filtering part is alpha, and alpha is more than 0 degree and less than or equal to 120 degrees.
As a further improvement of the above technical solution: the feeding assembly comprises a feeding barrel and a feeding barrel, the feeding barrel is communicated with the extraction tank through the feeding barrel, the axis of the feeding barrel is parallel to the axis of the extraction tank, and the axis of the feeding barrel is intersected with the axis of the extraction tank.
As a further improvement of the above technical solution: the included angle between the axis of the feeding cylinder and the axis of the extracting tank is delta, and delta is more than or equal to 30 degrees and less than or equal to 60 degrees.
Compared with the prior art, the invention has the advantages that: the traditional Chinese medicine extraction device disclosed by the invention has the advantages that the heating component is positioned at the lower part of the extraction tank, the medicinal material is positioned above the filtering component, the heating component can be immersed in a solvent before the medicinal material is immersed in the solvent, during extraction, heating steam enters the heat exchange cavity from the heating steam inlet to exchange heat with the extracted solvent, the temperature of the heated solvent rises, density difference and small density upward flow are generated in the heat exchange tube, the medicinal material floats through the filtering component, the density of cold liquid is relatively large, the cold liquid enters the inner cylinder body through the filtering component to form dynamic circulation, the circulation process covers the whole extraction tank, the temperature of the solvent in the extraction tank is consistent, and the solvent on the surface of the medicinal material is updated constantly, so that the concentration difference inside and outside the cells of the medicinal material is increased; furthermore, as the heat exchange tubes are obliquely arranged, no shearing force exists in the liquid flowing process, and the tissue structure of the medicinal materials cannot be damaged, so that excessive impurities cannot be extracted, and the phenomenon of blockage of a filter assembly can be avoided; the cleaning liquid conveying pipe is arranged in the inner barrel in a penetrating mode, the cleaning spray heads are arranged at the upper end and the lower end of the inner barrel in a penetrating mode, comprehensive online cleaning can be conducted on the filtering assembly and the heating assembly, and the defects that the interior of the extracting tank is difficult to clean and manual cleaning is time-consuming and labor-consuming are overcome.
Drawings
Fig. 1 is a schematic front view of the traditional Chinese medicine extraction device of the present invention.
Fig. 2 is a schematic view of the structure of the cleaning assembly of the present invention.
Fig. 3 is a front view schematically showing the structure of the heating unit of the present invention.
Fig. 4 is a schematic top view of the heating assembly of the present invention.
Fig. 5 is a schematic structural view of the first filter according to the present invention.
Fig. 6 is a schematic structural view of a kidney-shaped filtering hole in the present invention.
Fig. 7 is a schematic view of the structure of the circular filtering hole in the present invention.
Fig. 8 is a schematic structural view of the feeding assembly in the present invention.
The reference numerals in the figures denote: 1. an extraction tank; 2. a filter assembly; 21. a first filter screen; 22. a conical filter section; 221. a kidney-shaped filter hole; 222. circular filter holes; 23. a second filter screen; 3. a heating assembly; 31. an inner cylinder; 32. an outer cylinder; 33. an upper connecting plate; 34. a lower connecting plate; 35. a heat exchange pipe; 36. a heat exchange cavity; 37. a heated steam inlet; 38. a condensed water outlet; 4. a lower cover plate; 51. a cleaning liquid delivery pipe; 52. cleaning the tube; 53. a check valve; 54. cleaning the spray head; 6. a feeding assembly; 61. a charging barrel; 62. a feeding cylinder.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples of the specification.
Fig. 1 to 8 show an embodiment of the traditional Chinese medicine extraction device of the present invention, the traditional Chinese medicine extraction device of the present embodiment includes an extraction tank 1, a feeding component 6 disposed on the upper portion of the extraction tank 1, and a filtering component 2 disposed in the extraction tank 1, a heating component 3 is disposed below the filtering component 2, the heating component 3 includes an inner cylinder 31, an outer cylinder 32, an upper connecting plate 33 for connecting the upper end of the inner cylinder 31 and the upper end of the outer cylinder 32, a lower connecting plate 34 for connecting the lower end of the inner cylinder 31 and the lower end of the outer cylinder 32, and a plurality of heat exchange tubes 35 for communicating the upper connecting plate 33 and the lower connecting plate 34, a heat exchange cavity 36 is formed between the inner cylinder 31, the outer cylinder 32, the upper connecting plate 33 and the lower connecting plate 34, the heat exchange cavity 36 is provided with a heating steam inlet 37 and a condensed water outlet 38, the distance between the upper end of the heat exchange tubes 35 and the axis of the inner, the bottom of drawing jar 1 is equipped with down apron 4 (apron 4 and draw and preferentially adopt detachable connection between jar 1 down, conveniently install and maintain), is equipped with washing liquid conveyer pipe 51 down on the apron 4, and washing liquid conveyer pipe 51 is worn to locate in the barrel 31 and both ends all are equipped with washing shower nozzle 54 from top to bottom.
In the traditional Chinese medicine extraction device, because the heating component 3 is positioned at the lower part of the extraction tank 1, the medicinal materials are positioned above the filtering component 2, the solvent can immerse the heating component 3 before the medicinal materials are immersed, during extraction, steam enters the heat exchange cavity 36 from the heating steam inlet 37, heat exchange is carried out with the extracted solvent, the steam is discharged from a condensed water outlet 38 after the temperature of the steam is reduced, the temperature of the solvent is raised after the solvent is heated, density difference is generated in the heat exchange tube 35, upward flow with small density is generated, the medicinal materials are floated through the filter component 2, the density of cold liquid is relatively large, the cold liquid enters the inner cylinder 31 through the filter component 2 to form dynamic circulation, the circulation process covers the inside of the whole extraction tank 1, the temperature of the solvent in the extraction tank 1 is balanced and consistent, the solvent on the surface of the medicinal material is constantly updated, so that the concentration difference between the inside and the outside of the medicinal material cells is increased, and the leaching rate of the medicinal material components is improved; furthermore, because the heat exchange tube 35 is obliquely arranged, no shearing force exists in the liquid flowing process, the tissue structure of the medicinal materials cannot be damaged, so that excessive impurities cannot be extracted, the phenomenon that the filter assembly 2 is blocked is avoided, and the phenomena of 'bumping' and 'breathing' are avoided; cleaning liquid conveyer pipe 51 wears to locate in barrel 31 and both ends all are equipped with washing shower nozzle 54 about and, can carry out comprehensive online cleaning to filter component 2, heating element 3, have overcome and have drawed jar 1 inside and be difficult to wash and the manual cleaning wastes time and energy the defect.
Further, in the present embodiment, the cleaning nozzle 54 is connected to the cleaning solution delivery pipe 51 through a cleaning pipe 52, and the cleaning pipe 52 is provided with a check valve 53, and the check valve 53 is located between the cleaning nozzle 54 and the cleaning solution delivery pipe 51. In the cleaning operation, cleaning water is introduced into each cleaning pipe 52 through the cleaning liquid supply pipe 51, passes through the check valve 53, and is then discharged through the cleaning nozzle 54 to be cleaned, and the check valve 53 prevents the solvent from flowing backward into the cleaning pipe 52.
Furthermore, in this embodiment, both ends all are equipped with a plurality of washing shower nozzles 54 about washing liquid conveyer pipe 51, and a plurality of washing shower nozzles 54 evenly arrange along washing liquid conveyer pipe 51 circumference for the scope that washing shower nozzle 54 covered is wider, guarantees the cleaning performance, avoids appearing wasing the dead angle.
As an optimized technical scheme, the included angle between the heat exchange tube 35 and the lower connecting plate 34 is beta, beta is more than 0 degree and less than or equal to 75 degrees, namely the inclination angle of the heat exchange tube 35 is not more than 75 degrees, which is beneficial to ensuring the heating effect of the heating component 3 and the leaching effect of the medicinal materials.
Preferably, the cross-sectional area of the inner cylinder 31 is S1, and the sum of the cross-sectional areas of all the heat exchange tubes 35 is S2, so that S1 is 0.8S 2-0.11S 2, that is, the cross-sectional areas of all the heat exchange tubes 35 slightly exceed the cross-sectional area of the inner cylinder 31, which is beneficial to maintaining the circulation flow effect of the solvent after the heating assembly 3 heats.
Further, in the present embodiment, the filter assembly 2 includes a first filter 21, and a tapered filter portion 22 is disposed on the first filter 21. The first filter screen 21 adopts the conical filter part 22, has a larger filter area, has enhanced permeability, reduces the probability of blockage, and has better compressive strength than the conventional flat plate structure. Preferably, the top of the first filter 21 is horizontal and fixedly connected to the upper end of the cleaning liquid delivery pipe 51, which contributes to further improving the structural strength and stability.
Furthermore, in the embodiment, the conical filtering portion 22 has a double-layer structure, the outer layer is provided with a plurality of waist-shaped filtering holes 221, the inner layer is provided with a plurality of circular filtering holes 222, the second filtering net 23 is arranged below the first filtering net 21, and the second filtering net 23 is provided with a plurality of square filtering holes (not shown). The filtering component 2 adopts the combination of the waist-shaped filtering holes 221, the round filtering holes 222 and the square filtering holes, so that the passing of the medicine dregs in different shapes can be effectively blocked, the filtering effect and the permeability can be further improved, and the blockage can be reduced.
Preferably, the conical angle corresponding to the conical filter part 22 is alpha, and alpha is more than 0 degree and less than or equal to 120 degrees. The cone angle of the conical filtering part 22 is between 0 and 120 degrees, which not only can ensure that the conical filtering part has larger filtering area and filtering capacity, but also has higher compressive strength, and is not easy to collapse and deform after being pressed.
Further, in the present embodiment, the feeding assembly 6 includes a feeding barrel 61 and a feeding barrel 62, the feeding barrel 61 is communicated with the extraction tank 1 through the feeding barrel 62, an axis of the feeding barrel 61 is parallel to an axis of the extraction tank 1, and an axis of the feeding barrel 62 intersects with the axis of the extraction tank 1, that is, the feeding barrel 62 is arranged obliquely. When throwing the material, the medicinal material gets into through throwing feed cylinder 61, feed cylinder 62 in proper order and draws jar 1 in, because feed cylinder 62 adopts the slope to arrange, the medicinal material can distribute in whole jar 1 that draws, has avoided the medicinal material to pile up throwing feed cylinder 61 below, guarantees that all medicinal materials follow-up all can be submerged, draw.
As a preferable technical scheme, in the embodiment, the included angle between the axis of the feeding cylinder 62 and the axis of the extracting tank 1 is delta, and the delta is more than or equal to 30 degrees and less than or equal to 60 degrees. The included angle between the axis of the feeding cylinder 62 and the axis of the extracting tank 1 is 30-60 degrees, which is beneficial to the distribution of the fed medicinal materials in the whole extracting tank 1.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (10)
1. The utility model provides a traditional chinese medicine extraction element, is including extracting jar (1), locating and extracting jar (1) upper portion throw material subassembly (6) and locate and extract filtering component (2) in jar (1), its characterized in that: a heating component (3) is arranged below the filtering component (2), the heating component (3) comprises an inner cylinder body (31), an outer cylinder body (32), an upper connecting plate (33) used for connecting the upper end of the inner cylinder body (31) with the upper end of the outer cylinder body (32), a lower connecting plate (34) used for connecting the lower end of the inner cylinder body (31) with the lower end of the outer cylinder body (32), and a plurality of heat exchange tubes (35) used for communicating the upper connecting plate (33) with the lower connecting plate (34), a heat exchange cavity (36) is formed among the inner cylinder body (31), the outer cylinder body (32), the upper connecting plate (33) and the lower connecting plate (34), the heat exchange cavity (36) is provided with a heating steam inlet (37) and a condensed water outlet (38), the distance between the upper end of the heat exchange tube (35) and the axis of the inner cylinder body (31) is greater than that between the lower end and the axis, be equipped with washing liquid conveyer pipe (51) on lower apron (4), washing liquid conveyer pipe (51) are worn to locate in interior barrel (31) and both ends all are equipped with washing shower nozzle (54) about and, wash shower nozzle (54) and link to each other with washing liquid conveyer pipe (51) through a scavenge pipe (52), both ends all are equipped with a plurality of washing shower nozzles (54) about washing liquid conveyer pipe (51), and are a plurality of washing shower nozzle (54) are arranged along washing liquid conveyer pipe (51) circumference.
2. The device for extracting traditional Chinese medicine according to claim 1, characterized in that: and a check valve (53) is arranged on the cleaning pipe (52), and the check valve (53) is positioned between the cleaning spray head (54) and the cleaning liquid conveying pipe (51).
3. The device for extracting traditional Chinese medicine according to claim 2, characterized in that: the cleaning spray heads (54) are uniformly arranged along the circumferential direction of the cleaning liquid conveying pipe (51).
4. The device for extracting traditional Chinese medicine according to claim 1, characterized in that: the included angle between the heat exchange tube (35) and the lower connecting plate (34) is beta, and beta is more than 0 degree and less than or equal to 75 degrees.
5. The device for extracting traditional Chinese medicine according to claim 1, characterized in that: the cross-sectional area of the inner cylinder (31) is S1, the sum of the cross-sectional areas of all the heat exchange tubes (35) is S2, and S1= 0.8S 2-0.11S 2.
6. The device for extracting traditional Chinese medicine according to any one of claims 1 to 5, wherein: the filter assembly (2) comprises a first filter screen (21), and a conical filter part (22) is arranged on the first filter screen (21).
7. The device for extracting traditional Chinese medicine according to claim 6, characterized in that: toper filter portion (22) are bilayer structure, and a plurality of waist type filtration holes (221) have been seted up to the skin, and a plurality of circular filtration holes (222) have been seted up to the inlayer, first filter screen (21) below is equipped with second filter screen (23), be equipped with a plurality of square filtration holes on second filter screen (23).
8. The device for extracting traditional Chinese medicine according to claim 6, characterized in that: the cone angle corresponding to the cone-shaped filtering part (22) is alpha, and the alpha is more than 0 degree and less than or equal to 120 degrees.
9. The device for extracting traditional Chinese medicine according to any one of claims 1 to 5, wherein: the feeding assembly (6) comprises a feeding barrel (61) and a feeding barrel (62), the feeding barrel (61) is communicated with the extraction tank (1) through the feeding barrel (62), the axis of the feeding barrel (61) is parallel to the axis of the extraction tank (1), and the axis of the feeding barrel (62) is intersected with the axis of the extraction tank (1).
10. The device for extracting traditional Chinese medicine according to claim 9, characterized in that: the included angle between the axis of the feeding cylinder (62) and the axis of the extracting tank (1) is delta, and delta is more than or equal to 30 degrees and less than or equal to 60 degrees.
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