Dendrobium nobile primary pulp extraction and concentration device

Abstract

The invention provides a device for extracting and concentrating dendrobium nobile puree, belongs to the field of medicinal plant processing, and particularly relates to a device for extracting and concentrating dendrobium nobile puree. Comprising a medicine slicing machine, an automatic transmission system, a hot air continuous drying machine, a traditional Chinese medicine leaching tank, a grinding machine, an extrusion filtering machine, a liquid storage tank, a film evaporation concentrator, a buffer tank, a vacuum pump and a liquid storage tank which are connected in sequence. The device is unique in structure, high in automation degree, capable of efficiently extracting active ingredients of dendrobium and high in practicability. The whole processing process is low in energy consumption and environmentally friendly, the utilization rate of rare medicinal materials such as dendrobium huoshanense and dendrobium officinale can be greatly increased, and the method is suitable for being popularized in the field.

Description

Technical Field

[0001] The invention relates to the field of medicinal plant processing, and mainly relates to a device for extracting and concentrating dendrobium pulp. Background Art

[0002] The invention is suitable for preparing the original pulp of various dendrobium varieties such as Huoshan dendrobium, candidum, purple dendrobium, etc., wherein Huoshan dendrobium (Dendrobium huoshanense CZ.Tang et SJCheng) is a perennial herbaceous plant of the genus Dendrobium of the orchid family, with a plant height of 3-9cm, a single node as short as a rice grain, commonly known as "rice dendrobium", and is produced in Huoshan, Anhui and nearby areas. Huoshan dendrobium was first recorded in "Famous Doctors' Records" and is famous at home and abroad for its preciousness and rarity. "Baicao Mirror" records: "Recently, there is a kind of Dendrobium that is short, only about an inch long, as thin as a wick, green and yellow in color, sweet when chewed, and slightly slippery. It comes from Lu'an Prefecture and Huoshan County of Yingzhou Prefecture, and is called Huoshan Dendrobium, which is the best." Modern research shows that Huoshan Dendrobium is rich in polysaccharides, alkaloids, polyphenols, amino acids, trace elements and other ingredients, and has the effects of clearing the liver and improving eyesight, protecting the liver and throat, nourishing yin and clearing heat, nourishing the stomach and producing body fluid, inhibiting the growth of tumor cells, and enhancing immunity.

[0003] Dendrobium officinale Kimura & Migo is widely distributed in my country, and is grown in Zhejiang, Anhui, Guangxi, Yunnan, Guangdong, Jiangxi, Jiangsu and other places. Its fresh product is 9-35 cm long, with relatively high yield. Its active ingredients include polysaccharides, mannose, alkaloids, etc., and it also has high health value. Because its polysaccharide has a relatively large molecular weight, it has a very obvious gelatinous texture when eaten.

[0004] No matter what kind of Dendrobium, its cost is relatively high. How to optimize the processing technology and improve the processing equipment to improve the comprehensive utilization value of Dendrobium medicinal materials and reduce the processing cost is of great practical significance. At present, the common process of Dendrobium raw pulp is to use simple water decoction extraction, filtration, and efficient concentration for processing. The extraction rate is low (usually around 30%), which is a great waste for the expensive Dendrobium medicinal materials. In addition, the Dendrobium raw pulp products on the market have a thin taste and poor smell, which can not reflect the typical characteristics of Dendrobium "glutinous fragrance and full of colloid". Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a device for extracting and concentrating dendrobium pulp, so as to obtain the effective ingredients of dendrobium to the maximum extent, improve the utilization rate of dendrobium, greatly reduce product costs, and obtain products with excellent taste and high market value.

[0006] The object of the present invention is achieved through the following technical solutions. A device for extracting and concentrating dendrobium pulp, comprising a medicine cutting machine, an automatic transmission system, a hot air continuous dryer, a Chinese medicine extraction tank, a grinder, an extrusion filter, a first liquid storage tank, a centrifuge, a second liquid storage tank, a thin film evaporation concentrator, a buffer tank, a vacuum system and a third liquid storage tank, wherein the dendrobium slices are transmitted from the outlet of the medicine cutting machine to the box of the hot air continuous dryer through the automatic transmission system; the dendrobium slices enter the Chinese medicine extraction tank after drying, and the extracted liquid is filtered to the second liquid storage tank. , the mixture of suspended dendrobium slices and water is put into a grinder and ground into dendrobium pulp; the ground dendrobium pulp is put into an extrusion filter to obtain a primary filtrate of dendrobium pulp, and the primary dendrobium pulp is squeezed into the first liquid storage tank; the filtered dendrobium pulp is centrifuged through a centrifuge, and the dendrobium pulp fine filtrate after centrifugation is put into the second liquid storage tank; the dendrobium pulp fine filtrate in the second liquid storage tank is put into a thin film evaporation concentrator through a vacuum pump for concentration, and the concentrated dendrobium pulp is transferred to a third liquid storage tank to obtain the dendrobium original pulp.

[0007] Furthermore, the medicine cutting machine is used for slicing fresh Dendrobium into thin slices of 2 to 5 mm to improve the drying efficiency and extraction rate.

[0008] Furthermore, the hot air continuous dryer is a drying device that integrates dynamic material transmission and hot air circulation drying, has automatic feeding and automatic packaging functions, and the conveyor belt is sieve-shaped with a pore size of 0.2 mm, which is conducive to improving the drying efficiency of dendrobium slices. Continuous drying can save labor costs, and also avoid repeatedly opening the dryer door for feeding and discharging, resulting in heat energy loss. The transmission rate of the automatic transmission system is adjusted according to the process requirements to ensure that the moisture content of the dendrobium slices at the outlet is ≤9%, and the drying temperature is set at the same time, so that the fresh dendrobium slices can produce the unique fragrance of dendrobium after drying.

[0009] Furthermore, in the automatic transmission system, there are barriers on both sides of the transmission belt to prevent the Dendrobium slices from spilling.

[0010] Furthermore, the Chinese medicine extraction tank is provided with a heating interlayer, a stirring paddle is provided at the bottom, and a detachable filter device is provided at the discharge port, so that the medicinal liquid can be filtered, and the slice suspension solution can also be poured into the grinding device at one time. The Dendrobium slices are put into the Chinese medicine extraction tank, and then 20-40 times the weight of purified water is injected, stirring is turned on, and the water temperature is heated to 90°C, and the heating is stopped. Soak for 35-45 minutes, so that the Dendrobium cell particle size after hot water soaking reaches 20-50um; then heat and boil for 2 hours, and the extraction efficiency of the soaked Dendrobium slices can be greatly improved, and the extracted medicinal liquid is filtered into the second liquid storage tank.

[0011] Furthermore, the grinder is an extrusion type grinding device, and the grinding aperture can be set at 5-300um. After being fully soaked in hot water, the cell size of the dendrobium is usually 20-50um. The grinding fineness can be adjusted so that the gap within the grinding aperture of 50um can pass smoothly, and the ground dendrobium pulp is connected to the extrusion filter. This grinder can break the cell wall of the dendrobium, so that the active ingredients of the dendrobium can be fully released, greatly improving the extraction rate of the active ingredients of the dendrobium. After filtering, the dendrobium slices are added with purified water, and stirring is started. The suspended dendrobium slices and the water mixture are poured into the grinder hopper with a suitable aperture, and the grinder is turned on to grind into dendrobium pulp.

[0012] Furthermore, the viscosity of the ground dendrobium slurry is relatively high, and conventional filtering devices are difficult to separate solids and liquids. The filter medium of the squeeze filter is a soft filter bag, and squeeze filtration is performed with squeeze disks on both sides. The ground dendrobium slurry is poured into the filter bag of the squeeze filter until the natural filtration flow rate drops significantly, and the squeeze disk is started to squeeze the dendrobium slurry into the first liquid storage tank, and the filter residue is discarded.

[0013] Furthermore, the centrifuge is a tubular centrifuge, which is suitable for solid-liquid separation of liquids with higher viscosity. The filtered dendrobium pulp is centrifuged, the centrifugal speed and flow rate are set according to the state of the medicinal liquid, and continuous feeding is performed at a speed of 8000-10000r / min, with the centrifuge outlet as the standard for clarified liquid; the refined filtrate of the dendrobium pulp after centrifugation is pumped into the second liquid storage tank, and the medicinal residue is discarded.

[0014] Furthermore, the thin film evaporation concentrator has a built-in roller, and the rolling rate is set so that the medicinal liquid forms a thin film on the roller to improve the evaporation effect. Under vacuum, a higher evaporation rate can be achieved at a lower medicinal liquid temperature. A condensation tank is connected between the vacuum system (vacuum pump) and the concentrator. This concentrator has a lower evaporation temperature, which can make the concentrated liquid reach a higher relative density without the risk of being burned by the heating system. It is particularly suitable for the concentration of high-viscosity medicinal liquids (such as dendrobium polysaccharides). Start the vacuum system, inject the dendrobium medicinal liquid in the second liquid storage tank into the thin film evaporation concentrator, set the temperature and roller speed as required, start the roller and the heating system, and concentrate the dendrobium medicinal liquid to a specified relative density.

[0015] Furthermore, the third liquid storage tank is a movable liquid storage tank with a built-in thermal insulation system and a discharge port at the bottom.

[0016] The dendrobium pulp prepared by the device for extracting and concentrating dendrobium pulp of the present invention has the following characteristics: 1. the dried dendrobium slices have a unique glutinous fragrance of dendrobium, and the pulp prepared by the present invention has a more favorable taste than fresh products; 2. the transfer rate of dendrobium polysaccharide extraction is *It can reach 90%, while the polysaccharide transfer rate of Dendrobium pulp obtained by conventional water extraction process is usually around 30%; ③ The Dendrobium pulp prepared by this device has high viscosity, good taste, and has the typical colloid characteristics of Dendrobium.

[0017] * Calculation formula for polysaccharide extraction rate (%):

[0018]

[0019] The beneficial effects of the present invention are as follows: the device for extracting and concentrating the raw pulp of Dendrobium officinale has a high degree of automation and strong practicality. The prepared concentrated liquid of Dendrobium officinale has stable quality, good appearance and taste, and has a good market prospect. The device can greatly improve the utilization rate of the precious medicinal material Dendrobium officinale, save resources, and the whole processing process has low energy consumption, is green and environmentally friendly, and can also greatly reduce the processing cost, which is suitable for popularization in the industry. The raw pulp polysaccharide extraction rate prepared by the present invention is as high as 89.6%, and the pulp has high viscosity, is full of colloid in the mouth, and has the typical "glutinous fragrance" of Dendrobium officinale. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art or ordinary technicians, other drawings can be obtained based on these drawings without paying creative work. Figure 1 It is a structural schematic diagram of the present invention.

[0021] In the figure: medicine cutting machine 1, automatic transmission system 2, hot air continuous dryer 3, Chinese medicine extraction tank 4, stirring paddle 4-1, grinder 5, extrusion filter 6, first liquid storage tank 7, centrifuge 8, second liquid storage tank 9, thin film evaporation concentrator 10, buffer tank 11, vacuum system 12, third liquid storage tank 13. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0023] like Figure 1 As shown, a device for extracting and concentrating dendrobium pulp includes a medicine cutter 1, an automatic transmission system 2, a hot air continuous dryer 3, a Chinese medicine extraction tank 4, a grinder 5, an extrusion filter 6, a first liquid storage tank 7, a centrifuge 8, a second liquid storage tank 9, a thin film evaporation concentrator 10, a buffer tank 11, a vacuum system 12 and a third liquid storage tank 13 connected in sequence.

[0024] In the present invention, the slices of fresh Dendrobium prepared from fresh Dendrobium medicinal materials are cut into thin slices of 2 to 5 mm by a medicine cutter 1 to improve the drying efficiency and the extraction rate; the slices of fresh Dendrobium are transmitted from the outlet of the medicine cutter 1 to the box of the hot air continuous dryer 3 through the automatic transmission system 2; by treating at a relatively high temperature, preferably 65° C., the fresh Dendrobium slices can produce a unique fragrance of Dendrobium after drying; the transmission rate of the automatic transmission system 2 is adjusted according to the process requirements to ensure that the moisture content of the Dendrobium slices at the outlet is ≤9%, so as to obtain dried Dendrobium slices.

[0025] In the present invention, after being dried, the dendrobium slices enter a traditional Chinese medicine extraction tank 4, the traditional Chinese medicine extraction tank 4 is provided with a heating system, a stirring paddle 4-1 is provided at the bottom, and a filtering device is provided at the discharge port; the dendrobium slices are put into the traditional Chinese medicine extraction tank 4, and then 20-40 times the weight of purified water is injected, stirring is turned on, and the water temperature is heated to 90°C, the heating is stopped, and the dendrobium slices are soaked for 35-45 minutes, so that the particle size of the dendrobium cells after being soaked in hot water reaches 20-50um; then the dendrobium slices are heated and boiled for 2 hours, and the extracted medicinal liquid is filtered to the second liquid storage tank 9.

[0026] In the present invention, after extraction, the dendrobium slices are transported to the hopper of the grinder 5 through a pipeline. The grinder 5 is an extrusion type grinding device, and the grinding aperture is set at 50-300um, which breaks the dendrobium cell wall so that the active ingredients of the dendrobium can be fully released; the filtered dendrobium slices are added with purified water, stirred, and the suspended dendrobium slices and water mixture are poured into the grinder hopper with a suitable aperture, and the grinder is turned on to grind into dendrobium pulp. The ground dendrobium pulp is poured into the extrusion filter 6 to obtain the dendrobium pulp primary filtrate. The filter medium of the extrusion filter 6 is a soft filter bag, and the extrusion disks on both sides are used for extrusion filtration. The ground dendrobium pulp is poured into the filter bag of the extrusion filter 6 until the natural filtration flow rate is significantly reduced, the extrusion disk is started, and the dendrobium slurry is squeezed into the first liquid storage tank 7, and the filter residue is discarded. The filtered dendrobium pulp is centrifuged and finely filtered by a centrifuge 8, wherein the centrifuge 8 is a tubular centrifuge, and the filtered dendrobium pulp is centrifuged, and the centrifugal speed and flow rate are set according to the state of the medicinal liquid, and the centrifuge outlet is used as the standard for clarified liquid; the dendrobium pulp fine filtrate after centrifugation is pumped into the second liquid storage tank 9, and the medicinal residue is discarded; the dendrobium pulp fine filtrate in the second liquid storage tank 9 is pumped into a thin film evaporation concentrator 10 for concentration by a vacuum pump 12, and the thin film evaporation concentrator 10 is built with a roller, and the roller is set The moving rate is increased so that the medicinal liquid forms a thin film on the drum; the vacuum system 12 is started, and the dendrobium medicinal liquid in the second liquid storage tank 9 is pumped into the thin film evaporation concentrator 10, the temperature and the drum speed are set as required, and the drum and the heating system are started to concentrate the dendrobium medicinal liquid to a specified relative density; the concentrated dendrobium slurry is transferred to the third liquid storage tank 13, and the third liquid storage tank 13 is a movable liquid storage tank with a built-in insulation system, and a discharge port is provided at the bottom, so that the dendrobium original pulp is obtained, and the concentration and discharge of the dendrobium slurry are completed.

[0027] Comparative test:

[0028] 1. Comparison of the efficiency of direct drying and slice drying of fresh Dendrobium officinale

[0029] Under the same condition of 65℃, when the moisture content is 8%, the fresh strips need to be dried for 19 hours, while the slices only need to be dried for 6 hours. The above test proves that the Dendrobium slices have obvious advantages in short drying time and low energy consumption.

[0030] 2. Comparison of the quality of the puree made from the slices of Dendrobium officinale dried at 65°C and the fresh Dendrobium officinale

[0031] Fresh strips directly prepared have the grassy taste of Dendrobium, and the color is unstable; while the puree prepared from dried Dendrobium slices has a distinct "glutinous fragrance" and the product sensory quality is stable. The above test proves that dried Dendrobium slices are more suitable as the raw material for preparing Dendrobium puree, and the product has stable quality and good taste, which meets the requirements of industrialization.

[0032] 3. Compare the efficiency and cost of conventional hot air circulation drying and hot air continuous drying

[0033] The former only requires one person to complete the slicing, drying and collection of Dendrobium; the latter requires three people, one person is responsible for slicing, two people are responsible for slicing into drying trays, laying out and transporting to the oven, and after drying, two people are still required to take out and package. The above test proves that the conventional drying method requires loading Dendrobium slices into trays, then transporting the trays to the oven, taking out the trays after drying, and bagging the Dendrobium slices, which usually requires two people to complete; the continuous drying equipment can realize the automatic transfer of slices into the drying oven, and automatic packaging after drying, which can save labor costs.

[0034] 4. Comparison: Take two portions of dried slices of Dendrobium officinale (with known polysaccharide content) of the same weight, add 30 times of water, add to 90°C and soak for 40 minutes, then boil and extract for 2 hours, filter, add 30 times of water to the residue, grind, centrifuge, and combine with the above-mentioned extraction filtrate; take another portion of dried slices of Dendrobium officinale, add 30 times of water and boil and extract twice, each time for 2 hours, combine the filtrate, determine the polysaccharide in the filtrate, and calculate the polysaccharide extraction rate (%).

[0035] The polysaccharide extraction rate of the former is 89.6%; the polysaccharide extraction rate of the latter is 31.3%. The above experiments prove that the device of the application can greatly improve the polysaccharide extraction rate of Dendrobium officinale, and has obvious advantages.

[0036] 5. Compare the concentration effects of thin film evaporation concentrator and high efficiency concentrator

[0037] The thin film evaporation concentrator can concentrate the Dendrobium officinale pulp to a relative density of 1.12; the high-efficiency concentrator will appear scorched when the relative density is 1.09. If the temperature drops, the concentration efficiency will drop significantly. The above test proves that the thick gelatinous texture is a typical feature of Dendrobium officinale. The Dendrobium officinale pulp prepared by the thin film evaporator can better achieve this feature. Compared with the high-efficiency concentrator, it is more suitable for the concentration of Dendrobium officinale pulp, and the prepared product has more market prospects.

[0038] Example 1

[0039] The production capacity of each batch of the device for extracting and concentrating the raw pulp of Dendrobium officinale is set to 1000kg (based on the weight of fresh Dendrobium officinale). When in use, first adjust the slicing rate, place the cleaned fresh strips of Huoshan Dendrobium officinale on the conveyor belt of the medicine cutter, and cut them into 2-5mm thin slices. The conveyor belt connected to the feeding port of the medicine cutter is set to a transmission rate of 0.3m / min, and automatically transmitted to the hot air continuous drying oven. The drying temperature is set to 65°C. When all the Dendrobium slices are transferred into the drying oven, the transmission is stopped and the equipment enters the drying stage. After drying for 6 hours, the material is discharged, and the moisture content is 7.1%, which meets the preset requirements.

[0040] Put the dried Dendrobium officinale slices into a traditional Chinese medicine extraction tank, add 30 times water, heat to 90°C, stop heating, start stirring, soak for 40 minutes, heat and boil for 2 hours, filter through a 300-mesh sieve into a liquid storage tank (9), add 30 times water to the residue, and stir to form a suspension.

[0041] The grinder is set to a grinding fineness of 6um, the motor is started, the slice suspension is pumped into the grinder, the dendrobium grinding slurry is injected into the squeeze filter, the filtration is started, the filtrate enters the liquid storage tank (7), and the filter residue is discarded. The speed of the tubular centrifuge is set to 10000r / min, the dendrobium officinale filtrate is continuously injected into the centrifuge, and the refined filtrate enters the liquid storage tank 9.

[0042] The heating system of the thin film evaporation concentrator is started, and the heating temperature is set to 55° C. The vacuum system is then started to pump the liquid in the liquid storage tank (9) into the concentrator, and the vacuum degree is set to -0.1 MPa. The dendrobium liquid is concentrated to a relative density of 1.1 to obtain a Dendrobium officinale concentrated liquid, which is then transferred to the liquid storage tank 13.

[0043] 500 kg of fresh Dendrobium officinale was put in, and the polysaccharide content was 7.48%. After drying, 99.4 kg of dry Dendrobium slices were obtained, and 3108 kg of Dendrobium officinale concentrated liquid was finally obtained. After measurement, the polysaccharide content was 1.09%, and the polysaccharide extraction rate reached 90.6%.

[0044] Example 2

[0045] The difference between this embodiment and embodiment 1 is that Dendrobium officinale is replaced with Dendrobium huoshanense. In this case, 450 kg of fresh Dendrobium huoshanense is put into the mixture, and the polysaccharide content is 6.93%. 91 kg of dried slices of Dendrobium huoshanense are obtained, and 2725 kg of concentrated solution of Dendrobium huoshanense is obtained. The polysaccharide content is 1.03% and the polysaccharide extraction rate is 90.0%.

[0046] Through the device for extracting and concentrating the dendrobium pulp described in the present invention, the obtained dendrobium concentrate has a high polysaccharide extraction rate, which greatly improves the utilization rate of the dendrobium raw medicinal materials and significantly reduces the relative cost. In addition, the concentrate has a high viscosity, which conforms to the unique "colloidal feeling" characteristic of dendrobium. The liquid is relatively clear and has good stability. At the same time, it has the unique fragrance of dendrobium. The product appearance and taste quality are more competitive in the market. This kind of dendrobium concentrate can be directly filled to prepare a finished product, or it can be compounded with other raw material extracts to make a compound pulp product or a plant beverage product. It can also be compounded with other raw materials and auxiliary materials through a one-step granulation method to form a granular product.

[0047] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

[0048] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A device for extracting and concentrating dendrobium pulp, characterized in that: The invention comprises a medicine cutting machine (1), an automatic transmission system (2), a hot air continuous drying machine (3), a Chinese medicine extraction tank (4), a grinder (5), an extrusion filter (6), a first liquid storage tank (7), a centrifuge (8), a second liquid storage tank (9), a thin film evaporation concentrator (10), a buffer tank (11), a vacuum system (12) and a third liquid storage tank (13) which are connected in sequence. The dendrobium slices are transmitted from the outlet of the medicine cutting machine (1) to the box of the hot air continuous drying machine (3) through the automatic transmission system (2); the dendrobium slices are dried and then enter the Chinese medicine extraction tank (4); the extracted liquid is filtered to the second liquid storage tank (13); The liquid storage tank (9) is provided. The mixture of the suspended dendrobium slices and water is pumped into a grinder (5) and ground into dendrobium pulp. The ground dendrobium pulp is pumped into an extrusion filter (6) to obtain a primary filtrate of dendrobium pulp, and the primary dendrobium pulp is squeezed into the first liquid storage tank (7). The filtered dendrobium pulp is centrifuged in a centrifuge (8), and the dendrobium pulp filtrate after centrifugation is pumped into the second liquid storage tank (9). The dendrobium pulp filtrate in the second liquid storage tank (9) is pumped into a thin film evaporation concentrator (10) through a vacuum pump (12) for concentration, and the concentrated dendrobium pulp is transferred to a third liquid storage tank (13) to obtain dendrobium pulp.

2. The device for extracting and concentrating dendrobium pulp according to claim 1, characterized in that: The medicine cutting machine (1) is used for slicing fresh dendrobium into thin slices of 2 to 5 mm, so as to improve the drying efficiency and extraction rate.

3. The device for extracting and concentrating dendrobium pulp according to claim 2, characterized in that: The hot air continuous dryer (3) is a drying device that integrates dynamic material transmission and hot air circulation drying. The transmission rate of the automatic transmission system (2) is adjusted according to the process requirements to ensure that the moisture content of the dendrobium slices at the outlet is ≤9%. At the same time, the drying temperature is set so that the fresh dendrobium slices can produce the unique fragrance of dendrobium after drying.

4. The device for extracting and concentrating dendrobium pulp according to claim 3, characterized in that: The Chinese medicine extraction tank (4) is provided with a heating system, a stirring paddle (4-1) is arranged at the bottom, and a filtering device is arranged at the discharge port; the dendrobium slices are put into the Chinese medicine extraction tank (4), and then 20-40 times the weight of purified water is injected, stirring is started, and the water temperature is heated to 90°C, the heating is stopped, and the water is soaked for 35-45 minutes, so that the particle size of the dendrobium cells after soaking in hot water reaches 20-50um; the water is heated and boiled for 2 hours, and the extracted medicinal liquid is filtered into the second liquid storage tank (9).

5. The device for extracting and concentrating dendrobium pulp according to claim 4, characterized in that: The grinder (5) is an extrusion type grinding device, and the grinding aperture is set to a gap within 50um to allow smooth passage, breaking the cell wall of the dendrobium, so that the active ingredients of the dendrobium can be fully released; the filtered dendrobium slices are then added with purified water, and stirring is started, and the suspended dendrobium slices and water mixture are poured into a grinder hopper with a suitable aperture, and the grinder is turned on to grind into dendrobium slurry.

6. The device for extracting and concentrating dendrobium pulp according to claim 5, characterized in that: The filter medium of the squeeze filter (6) is a soft filter bag, which is squeezed and filtered by squeezing discs on both sides; the ground dendrobium slurry is poured into the filter bag of the squeeze filter (6) until the natural filtration flow rate drops significantly, the squeezing disc is started, the dendrobium slurry is squeezed into the first liquid storage tank (7), and the filter residue is discarded.

7. The device for extracting and concentrating dendrobium pulp according to claim 6, characterized in that: The centrifuge (8) is a tubular centrifuge, which centrifuges the filtered dendrobium pulp, sets the centrifugal speed and flow rate according to the state of the medicinal liquid, and takes the centrifuge outlet as the standard for clarified liquid; the dendrobium pulp fine filtrate after centrifugation is pumped into the second liquid storage tank (9), and the medicinal residue is discarded.

8. The device for extracting and concentrating dendrobium pulp according to claim 7, characterized in that: The thin film evaporation concentrator (10) has a built-in roller, and the rolling speed is set so that the medicinal liquid forms a thin film on the roller; the vacuum system (12) is started, and the dendrobium medicinal liquid in the second liquid storage tank (9) is pumped into the thin film evaporation concentrator (10), the temperature and the roller speed are set as required, and the roller and the heating system are started to concentrate the dendrobium medicinal liquid to a specified relative density.

9. The device for extracting and concentrating dendrobium pulp according to claim 8, characterized in that: The third liquid storage tank (13) is a movable liquid storage tank with a built-in heat preservation system and a discharge port at the bottom.

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