Soybean isoflavone extraction raw material pretreatment device

Abstract

The utility model discloses a soybean isoflavone extraction raw material pretreatment device which comprises a raw material cleaning and lifting mechanism, a raw material drying mechanism and a raw material crushing mechanism, the raw material cleaning and lifting mechanism comprises an inclined U-shaped groove, a rotating rod rotationally arranged in the U-shaped groove, a worm and gear speed reducing motor for driving the rotating rod to rotate, and a spiral blade I fixedly wound on the rotating rod; the raw material drying mechanism comprises a drying workbench located under the first discharging opening, a drying outer barrel vertically fixed to the drying workbench, a drying inner barrel fixed to the interior of the drying outer barrel, a plurality of ventilation holes evenly formed in the side wall of the drying inner barrel, and a second spiral blade fixed between the drying inner barrel and the drying outer barrel. And the axial flow fan is used for conveying dry gas into the drying inner barrel. The soybean cleaning and air-drying device has the following advantages and effects of cleaning and air-drying soybeans.

Description

Technical Field

[0001] The utility model relates to the technical field of soybean isoflavone extraction process equipment, in particular to a soybean isoflavone extraction raw material pretreatment device. Background Art

[0002] Soy isoflavones are flavonoid compounds, secondary metabolites formed during soybean growth, and are biologically active substances. Extracted from plants, they share a similar structure to estrogen, leading to their being called phytoestrogens. The estrogenic effects of soy isoflavones affect hormone secretion, metabolic activity, protein synthesis, and growth factor activity, making them natural cancer chemopreventive agents.

[0003] The existing soy isoflavone extraction process involves pre-treating the raw soybeans (crushing or grinding), then mixing the soybean powder with an appropriate amount of solvent and steeping it for a specified period of time. The extract is then filtered and centrifuged to obtain a liquid extract, which is then concentrated and purified to yield the soy isoflavones. Prior to pre-treatment, the soybeans are often covered in dust and impurities. This dust and impurities not only hinder isoflavone extraction but also remain in various extraction equipment, causing problems such as blockage and wear. Utility Model Content

[0004] The utility model aims to provide a soybean isoflavone extraction raw material pretreatment device, which has the effects of cleaning and air-drying soybeans.

[0005] The above technical objectives of the present utility model are achieved through the following technical solutions: a raw material pretreatment device for extracting soybean isoflavones, comprising a raw material cleaning and lifting mechanism, a raw material drying mechanism and a raw material crushing mechanism, the raw material cleaning and lifting mechanism comprising an inclined U-shaped groove, a rotating rod rotatably arranged inside the U-shaped groove, a worm gear reduction motor driving the rotating rod to rotate, and a spiral blade fixedly wound on the rotating rod, the rotating rod and the curved portion of the U-shaped groove are coaxial, and the outer contour surface of the spiral blade rotates to contact the inner arc surface of the U-shaped groove, the U-shaped groove is located below the upper end and is provided with a discharge port opening downward, the worm gear reduction motor is fixedly installed at the upper end of the U-shaped groove, and the output end of the worm gear reduction motor rotates and penetrates into the interior of the U-shaped groove to connect with the upper end of the rotating rod;

[0006] The raw material drying mechanism includes a drying workbench located directly below the first discharge port, a drying outer cylinder vertically fixed on the drying workbench, a drying inner cylinder fixed inside the drying outer cylinder, a plurality of ventilation holes evenly arranged on the side wall of the drying inner cylinder, a second spiral blade fixed between the drying inner cylinder and the drying outer cylinder, and an axial flow fan for conveying dry gas to the inside of the drying inner cylinder. The opening of the drying outer cylinder faces upward and is directly opposite to the first discharge port, the opening of the drying inner cylinder faces downward, and an air inlet connected to the inside of the drying inner cylinder is provided at the bottom of the drying outer cylinder. A circular through hole is provided on the drying workbench below the air inlet. The axial flow fan is fixedly installed in the circular through hole, and the air outlet direction is directly opposite to the air inlet. The side wall of the drying outer cylinder is provided with a second discharge port connected to the input end of the raw material crushing mechanism, and the second discharge port is close to the lower end of the drying outer cylinder.

[0007] The utility model is further configured as follows: the raw material crushing mechanism includes a crushing box, a conveying chamber and a crushing chamber arranged vertically inside the crushing box, a communication port provided inside the crushing box and communicating with the conveying chamber and the crushing chamber, a rotating shaft with one end rotatably connected to the center of the top wall of the conveying chamber and the other end extending into the crushing chamber through the communication port, a three-phase asynchronous motor driving the rotating shaft to rotate, a spiral blade fixedly wound around the rotating shaft and located in the conveying chamber, a rotating grinding disc fixed to the lower end of the rotating shaft and located in the crushing chamber, and a fixed grinding ring fixed to the top of the crushing chamber and located above the grinding disc;

[0008] The bottom of the crushing box is provided with a third discharge port connected to the crushing chamber, and one side of the crushing box is provided with a feed port connected to the second discharge port and the conveying chamber; the three-phase asynchronous motor is fixedly installed on the top of the crushing box, and the output end rotates to pass into the crushing chamber to connect with the rotating shaft; the outer contour surface of the third spiral blade rotates to contact the inner wall of the conveying chamber, and the feed port is located above the spiral blade; the fixed grinding ring and the rotating grinding disc have the same axis and outer diameter, and the side close to the fixed grinding ring and the rotating grinding disc is evenly provided with crushing teeth for crushing the raw materials.

[0009] The present invention is further configured as follows: the grinding chamber is in the shape of a hopper, the fixed grinding ring and the rotating grinding disc are located in the cylindrical area of ​​the grinding chamber, and the discharge port is located at the lower end of the conical area of ​​the grinding chamber.

[0010] The present invention is further configured as follows: the conveying chamber is in the shape of a hopper, the spiral blade three is in the shape of a cone and is located in the conical area of ​​the conveying chamber, and the feed port is located in the cylindrical area of ​​the conveying chamber.

[0011] The present invention is further configured as follows: the rotating shaft is in a spindle shape, and the upper conical portion and the lower conical portion thereof are respectively located in the cylindrical region and the conical region of the conveying chamber.

[0012] The present invention is further configured as follows: a U-shaped support plate is fixedly provided at the bottom of the crushing box, a collection box with an upward opening is placed in the middle of the U-shaped support plate, and the discharge port 3 is located directly above the collection box.

[0013] The present invention is further configured as follows: a feed hopper is fixedly provided on the top of the outer drying cylinder, and a cone is fixedly provided on the top of the inner drying cylinder.

[0014] The utility model is further configured as follows: a U-shaped guard plate is fixedly provided above the lower end of the U-shaped groove, and two wings of the U-shaped guard plate are triangular.

[0015] The present invention is further configured as follows: a water inlet pipe is fixedly connected to the middle portion of the side wall of the U-shaped groove, and a water outlet pipe is fixedly connected to the lower end surface of the U-shaped groove.

[0016] The present invention is further configured as follows: a plurality of anti-slip protrusions are evenly arranged on the surface of the spiral blade one.

[0017] The beneficial effects of the present invention are as follows: by adopting the above technical scheme, when the soybean isoflavone raw material (soybean) needs to be pre-processed, first a certain amount of water is injected into the U-shaped trough through the water inlet pipe; then the raw material is poured into the bottom of the U-shaped trough, so that the raw material is immersed in water for washing, thereby removing impurities and dust in the raw material; then the worm gear reduction motor drives the rotating rod in the U-shaped trough to rotate, and at the same time, the spiral blade 1 wrapped on the rotating rod will transport and lift the raw material soaked in water to the top of the U-shaped trough during its rotation, so that the raw material leaves the water surface and is sent into the discharge port 1 at the bottom of the upper end of the U-shaped trough; then, the raw material that is cleaned and transported into the discharge port 1 will naturally fall into the gap between the drying outer cylinder and the drying inner cylinder, and flow along the spiral blade 2. Due to the air outlet direction of the axial flow fan The air inlet is directly opposite to the drying inner drum, and the side wall of the drying inner drum is provided with ventilation holes. Therefore, when the raw materials flow along the spiral blades 2, the airflow output by the axial flow fan will pass through the drying inner drum and the ventilation holes to dry the moisture on the surface of the raw materials, thereby achieving the effect of drying the raw materials; after that, the dried raw materials will pass through the discharge port 2 of the drying outer drum and enter the conveying chamber of the crushing box. At the same time, the three-phase asynchronous motor drives the rotating shaft to rotate, so that the spiral blades 3 on the rotating shaft transport the raw materials in the conveying chamber through the feed port and into the crushing chamber; finally, the rotating grinding disc rotating with the rotating shaft will cooperate with the fixed grinding ring to grind the raw materials entering the crushing chamber into powder. At the same time, the raw material powder after crushing will leave the crushing box from the discharge port 3 at the lower end of the crushing chamber under the action of its own gravity, thereby obtaining raw material powder of a certain purity.

[0018] The above-mentioned structure of soaking and air-drying raw materials can not only effectively remove impurities and dust in the raw materials to ensure the stability of the soy isoflavone extraction process, but also can reduce the wear of solid impurity particles on the grinding disc in the raw material crushing structure to a certain extent, thereby effectively extending the service life of the raw material crushing structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 2 is a schematic diagram of the three-dimensional structure of this embodiment;

[0021] Figure 2 Schematic diagram of the structure of the raw material cleaning and lifting mechanism of this embodiment;

[0022] Figure 3 This is a schematic structural diagram of the raw material drying mechanism and the raw material crushing mechanism of this embodiment;

[0023] In the figure, 1. Raw material cleaning and lifting mechanism; 11. U-shaped groove; 111. U-shaped guard plate; 112. Water inlet pipe; 113. Water outlet pipe; 12. Rotating rod; 13. Worm gear reducer; 14. Spiral blade 1; 15. Discharge port 1; 2. Raw material drying mechanism; 21. Drying workbench; 211. Circular through hole; 22. Drying outer cylinder; 221. Air inlet; 222. Feed hopper; 23. Drying inner cylinder; 231. Through hole Air hole; 232, cone; 24, spiral blade 2; 25, axial flow fan; 26, discharge port 2; 3, raw material crushing mechanism; 31, crushing box; 311, discharge port 3; 312, feed port; 32, conveying chamber; 33, crushing chamber; 34, connecting port; 35, rotating shaft; 36, three-phase asynchronous motor; 37, spiral blade 3; 38, rotating grinding disc; 39, fixed grinding ring; 4, U-shaped support plate; 5, collection box. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions of the present invention in conjunction with specific embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0025] Embodiment: A pretreatment device for extracting soybean isoflavones raw materials, such as Figure 1-3As shown, it includes a raw material cleaning and lifting mechanism 1, a raw material drying mechanism 2 and a raw material crushing mechanism 3. The raw material cleaning and lifting mechanism 1 includes an inclined U-shaped groove 11, a rotating rod 12 rotatably arranged inside the U-shaped groove 11, a worm gear reduction motor 13 driving the rotating rod 12 to rotate, and a spiral blade 14 fixedly wound on the rotating rod 12. The rotating rod 12 and the curved portion of the U-shaped groove 11 are coaxial, and the outer contour surface of the spiral blade 14 rotates to contact the inner arc surface of the U-shaped groove 11. The U-shaped groove 11 is located below the upper end and is provided with a discharge port 15 opening downward. The worm gear reduction motor 13 is fixedly installed at the upper end of the U-shaped groove 11, and the output end of the worm gear reduction motor 13 rotates and penetrates into the interior of the U-shaped groove 11 to connect with the upper end of the rotating rod 12.

[0026] The raw material drying mechanism 2 includes a drying table 21 located just below the discharge port 15, a drying outer cylinder 22 vertically fixed on the drying table 21, a drying inner cylinder 23 fixed inside the drying outer cylinder 22, a plurality of ventilation holes 231 evenly opened on the side wall of the drying inner cylinder 23, a spiral blade 24 fixed between the drying inner cylinder 23 and the drying outer cylinder 22, and an axial flow fan 25 for conveying dry gas to the interior of the drying inner cylinder 23. The opening of the drying outer cylinder 22 faces upward and is directly opposite to the discharge port. The opening 15 is downward, and the bottom of the drying outer cylinder 22 is provided with an air inlet 221 connected to the interior of the drying inner cylinder 23. The drying workbench 21 is located below the air inlet 221 and is provided with a circular through hole 211. The axial flow fan 25 is fixedly installed in the circular through hole 211, and the air outlet direction is facing the air inlet 221. The side wall of the drying outer cylinder 22 is provided with a discharge port 26 connected to the input end of the raw material crushing mechanism 3, and the discharge port 26 is close to the lower end of the drying outer cylinder 22.

[0027] The raw material crushing mechanism 3 includes a crushing box 31, a conveying chamber 32 and a crushing chamber 33 arranged vertically inside the crushing box 31, a communication port 34 provided inside the crushing box 31 and connecting the conveying chamber 32 and the crushing chamber 33, a rotating shaft 35 with one end rotatably connected to the center of the top wall of the conveying chamber 32 and the other end extending into the crushing chamber 33 through the communication port 34, a three-phase asynchronous motor 36 driving the rotating shaft 35, a spiral blade 37 fixedly wound around the rotating shaft 35 and located in the conveying chamber 32, a rotating grinding disc 38 fixed to the lower end of the rotating shaft 35 and located in the crushing chamber 33, and a fixed grinding ring 39 fixed to the top of the crushing chamber 33 and located above the grinding disc.

[0028] A third discharge port 311 communicating with the crushing chamber 33 is provided at the bottom of the crushing box 31, and a feed port 312 communicating with the second discharge port 26 and the conveying chamber 32 is provided on one side of the crushing box 31; a three-phase asynchronous motor 36 is fixedly mounted on the top of the crushing box 31, and the output end rotates to penetrate into the crushing chamber 33 and connect to the rotating shaft 35; the outer contour surface of the third spiral blade 37 rotates to contact the inner wall of the conveying chamber 32, and the feed port 312 is located above the spiral blade; the fixed grinding ring 39 and the rotating grinding disc 38 have the same axis and outer diameter, and the side close to the fixed grinding ring 39 and the rotating grinding disc 38 is evenly provided with crushing teeth for crushing the raw materials.

[0029] Furthermore, the grinding chamber 33 is in the shape of a hopper, the fixed grinding ring 39 and the rotating grinding disc 38 are located in the cylindrical area of ​​the grinding chamber 33, and the discharge port 311 is located at the lower end of the conical area of ​​the grinding chamber 33, so that the raw material powder can be gathered and slowly leave from the discharge port 311.

[0030] Furthermore, the conveying chamber 32 is in the shape of a hopper, the spiral blade 37 is in the shape of a cone and is located in the conical area of ​​the conveying chamber 32, and the feed port 312 is located in the cylindrical area of ​​the conveying chamber 32, which can allow the raw materials to be gathered and, in conjunction with the spiral blade 37, slowly and continuously convey the raw materials into the crushing chamber 33 for crushing processing.

[0031] Furthermore, the rotating shaft 35 is in a spindle shape, and the upper tapered portion and the lower tapered portion thereof are respectively located in the cylindrical region and the tapered region of the conveying chamber 32 , which can further increase the gathering speed of the raw materials.

[0032] Furthermore, a U-shaped support plate 4 is fixedly provided at the bottom of the crushing box 31, a collection box 5 with an upward opening is placed in the middle of the U-shaped support plate 4, and the discharge port 311 is located directly above the collection box 5, which can effectively collect the raw material powder coming out of the discharge port 311.

[0033] Furthermore, a feed hopper 222 is fixedly provided on the top of the drying outer drum 22 , and a cone 232 is fixedly provided on the top of the drying inner drum 23 .

[0034] Furthermore, a U-shaped guard plate 111 is fixedly provided above the lower end of the U-shaped groove 11 , and the two wings of the U-shaped guard plate 111 are triangular, which can further increase the water holding capacity of the U-shaped groove 11 .

[0035] Furthermore, a water inlet pipe 112 is fixedly connected to the middle of the side wall of the U-shaped groove 11, and a water outlet pipe 113 is fixedly connected to the lower end face of the U-shaped groove 11, which can facilitate the staff to replace the raw material cleaning water in the U-shaped groove 11.

[0036] Furthermore, a plurality of anti-skid protrusions are evenly arranged on the surface of the spiral blade 14 , which can reduce the friction between the raw material and the surface of the spiral blade 14 , thereby improving the conveying efficiency of the spiral blade 14 .

[0037] The working principle of this embodiment is as follows:

[0038] When the soybean isoflavone raw material (soybean) needs to be pre-processed, a certain amount of water is first injected into the U-shaped trough 11 through the water inlet pipe 112; then the raw material is poured into the bottom of the U-shaped trough 11, so that the raw material is immersed in water for washing, thereby removing impurities and dust in the raw material; then the worm gear reduction motor 13 drives the rotating rod 12 in the U-shaped trough 11 to rotate, and at the same time, the spiral blade 14 wrapped on the rotating rod 12 will transport and lift the raw material soaked in water to the top of the U-shaped trough 11 during its rotation, so that the raw material is out of the water and sent into the discharge port 15 at the bottom of the upper end of the U-shaped trough 11; then, the raw material in the cleaned and transported inlet and outlet 15 will naturally fall into the gap between the drying outer cylinder 22 and the drying inner cylinder 23, and flow along the spiral blade 24. Since the air outlet direction of the axial flow fan 25 is directly facing the air inlet 221 connected to the drying inner cylinder 23, and the drying inner cylinder The side wall of the drying drum 23 is provided with ventilation holes 231. Therefore, when the raw materials flow along the spiral blades 24, the air flow output by the axial flow fan 25 will pass through the drying inner drum 23 and the ventilation holes 231, and dry the moisture on the surface of the raw materials, thereby achieving the effect of drying the raw materials. After that, the dried raw materials will pass through the discharge port 26 of the drying outer drum 22 and enter the conveying chamber 32 of the crushing box 31. At the same time, the three-phase asynchronous motor 36 drives the rotating shaft 35 to rotate, so that the spiral blades 37 on the rotating shaft 35 convey the raw materials in the conveying chamber 32 through the feed port 312 and into the crushing chamber 33. Finally, the rotating grinding disc 38 rotating with the rotating shaft 35 will cooperate with the fixed grinding ring 39 to grind the raw materials entering the crushing chamber 33 into powder. At the same time, the crushed raw material powder will leave the crushing box 31 from the discharge port 311 at the lower end of the crushing chamber 33 under the action of its own gravity, thereby obtaining a relatively pure raw material powder.

[0039] The above-mentioned structure of soaking and air-drying raw materials can not only effectively remove impurities and dust in the raw materials to ensure the stability of the soy isoflavone extraction process, but also can reduce the wear of solid impurity particles on the grinding disc in the raw material crushing structure to a certain extent, thereby effectively extending the service life of the raw material crushing structure.

Claims

1. A soybean isoflavone extraction raw material pretreatment device, characterized in that: The invention comprises a raw material cleaning and lifting mechanism (1), a raw material drying mechanism (2) and a raw material crushing mechanism (3), wherein the raw material cleaning and lifting mechanism (1) comprises a U-shaped groove (11) arranged obliquely, a rotating rod (12) rotatably arranged inside the U-shaped groove (11), a worm gear reduction motor (13) driving the rotating rod (12) to rotate, and a spiral blade (14) fixedly wound on the rotating rod (12), wherein the rotating rod (12) and the curved portion of the U-shaped groove (11) are coaxial, and the outer contour surface of the spiral blade (14) rotates to contact the inner arc surface of the U-shaped groove (11), and the U-shaped groove (11) is provided with a discharge port (15) with an opening facing downwards at the lower part of the upper end, and the worm gear reduction motor (13) is fixedly installed at the upper end of the U-shaped groove (11), and the output end of the worm gear reduction motor (13) rotates and penetrates into the interior of the U-shaped groove (11) to connect with the upper end of the rotating rod (12); The raw material drying mechanism (2) comprises a drying workbench (21) located directly below the first discharge port (15), a drying outer cylinder (22) vertically fixed on the drying workbench (21), a drying inner cylinder (23) fixed inside the drying outer cylinder (22), a plurality of ventilation holes (231) evenly arranged on the side wall of the drying inner cylinder (23), a second spiral blade (24) fixed between the drying inner cylinder (23) and the drying outer cylinder (22), and an axial flow fan (25) for conveying dry gas into the drying inner cylinder (23). The opening of the drying outer cylinder (22) faces upward and is directly opposite to the first discharge port. (15), the opening of the drying inner cylinder (23) faces downward, and the bottom of the drying outer cylinder (22) is provided with an air inlet (221) connected to the interior of the drying inner cylinder (23), the drying workbench (21) is provided with a circular through hole (211) below the air inlet (221), the axial flow fan (25) is fixedly installed in the circular through hole (211), and the air outlet direction is facing the air inlet (221), and the side wall of the drying outer cylinder (22) is provided with a second discharge port (26) connected to the input end of the raw material crushing mechanism (3), and the second discharge port (26) is close to the lower end of the drying outer cylinder (22).

2. A soybean isoflavone extraction raw material pretreatment device according to claim 1, characterized in that: The raw material crushing mechanism (3) comprises a crushing box (31), a conveying chamber (32) and a crushing chamber (33) arranged in the crushing box (31) and arranged in an upper and lower direction, a communication port (34) arranged in the crushing box (31) and communicating with the conveying chamber (32) and the crushing chamber (33), a rotating shaft (35) with one end rotatably connected to the center of the top wall of the conveying chamber (32) and the other end passing through the communication port (34) and extending into the crushing chamber (33), a three-phase asynchronous motor (36) driving the rotating shaft (35) to rotate, three spiral blades (37) fixedly wound around the rotating shaft (35) and located in the conveying chamber (32), a rotating grinding disc (38) fixed to the lower end of the rotating shaft (35) and located in the crushing chamber (33), and a fixed grinding ring (39) fixed to the top of the crushing chamber (33) and located above the grinding disc. The bottom of the crushing box (31) is provided with a third discharge port (311) connected to the crushing chamber (33), and one side of the crushing box (31) is provided with a second discharge port (26) connected to the conveying chamber (32); the three-phase asynchronous motor (36) is fixedly installed on the top of the crushing box (31), and the output end rotates and penetrates into the crushing chamber (33) to connect with the rotating shaft (35); the outer contour surface of the third spiral blade (37) rotates to contact the inner wall of the conveying chamber (32), and the feed port (312) is located above the spiral blade; the fixed grinding ring (39) and the rotating grinding disc (38) have the same axis and outer diameter, and the side where the fixed grinding ring (39) and the rotating grinding disc (38) are close to each other is evenly provided with crushing teeth for crushing raw materials.

3. A soybean isoflavone extraction raw material pretreatment device according to claim 2, characterized in that: The grinding chamber (33) is in the shape of a hopper, the fixed grinding ring (39) and the rotating grinding disc (38) are located in the cylindrical area of ​​the grinding chamber (33), and the discharge port 3 (311) is located at the lower end of the conical area of ​​the grinding chamber (33).

4. A soybean isoflavone extraction raw material pretreatment device according to claim 2, characterized in that: The conveying chamber (32) is in the shape of a hopper, the spiral blade three (37) is in the shape of a cone and is located in the cone area of ​​the conveying chamber (32), and the feed port (312) is located in the cylindrical area of ​​the conveying chamber (32).

5. The soybean isoflavone extraction raw material pretreatment device according to claim 3, characterized in that: The rotating shaft (35) is in the shape of a spindle, and its upper tapered portion and lower tapered portion are respectively located in the cylindrical region and the tapered region of the conveying chamber (32).

6. A soybean isoflavone extraction raw material pretreatment device according to claim 2, characterized in that: A U-shaped support plate (4) is fixedly provided at the bottom of the crushing box (31), a collection box (5) with an upward opening is placed in the middle of the U-shaped support plate (4), and the third discharge port (311) is located directly above the collection box (5).

7. The soybean isoflavone extraction raw material pretreatment device according to claim 1, characterized in that: A feed hopper (222) is fixedly provided on the top of the drying outer cylinder (22), and a cone (232) is fixedly provided on the top of the drying inner cylinder (23).

8. The soybean isoflavone extraction raw material pretreatment device according to claim 1, characterized in that: A U-shaped guard plate (111) is fixedly provided above the lower end of the U-shaped groove (11), and two wings of the U-shaped guard plate (111) are triangular.

9. The soybean isoflavone extraction raw material pretreatment device according to claim 1, characterized in that: A water inlet pipe (112) is fixedly connected to the middle portion of the side wall of the U-shaped groove (11), and a water outlet pipe (113) is fixedly connected to the lower end surface of the U-shaped groove (11).

10. The soybean isoflavone extraction raw material pretreatment device according to claim 1, characterized in that: The surface of the spiral blade 1 (14) is evenly provided with a plurality of anti-slip protrusions.

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