Countercurrent extraction equipment with airflow stirring function

Abstract

The countercurrent extraction equipment with the airflow stirring function comprises a shell and a motor, the shell is obliquely arranged, a main shaft is rotatably arranged in the shell and connected with an output shaft of the motor, spiral blades are arranged on the main shaft in a surrounding mode, a first turning pipe is arranged at the lower end in the shell, and a second turning pipe is arranged at the lower end in the shell. One end of the first turning pipe is located in the shell, and the other end is located outside the shell and connected with gas transmission equipment; the main shaft is of a hollow structure, a plurality of turning air holes are formed in the surface of the main shaft, a second turning pipe is arranged in the main shaft in a penetrating mode, and the higher end of the second turning pipe is connected with air conveying equipment. The first turning pipe is used for outputting airflow to stir raw materials at the bottom of the shell, so that sufficient mixing of the raw materials at the bottom of the shell and a solvent is guaranteed, the extraction efficiency is improved, dispersion of blocky raw materials is promoted, and material conveying is facilitated; meanwhile, the overturning air holes in the surface of the main shaft stir the raw materials on the spiral blades and are beneficial to increasing the bubble amount in the solvent, and the extraction efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to a countercurrent extraction device, in particular to a countercurrent extraction device with an airflow stirring function. Background Art

[0002] Continuous countercurrent extraction is to make the color-rich raw material and the solvent form a continuous movement in the opposite direction in the extraction container to extract the substances in the color-rich raw material. Continuous countercurrent extraction technology is usually used in the medicinal material processing industry. Compared with traditional processes, its product concentration is high, the solvent consumption is small, the extraction rate is higher, and it is suitable for continuous production.

[0003] Most countercurrent extraction equipment uses a screw propeller to transport materials. In the actual production process, due to the effect of gravity, the raw materials are easily accumulated at the bottom of the screw propeller, and as the equipment runs, the degree of bonding of the accumulated part will increase, resulting in the raw materials being in a block state even after being transported up, which is not conducive to full contact between the raw materials and the solvent, resulting in low extraction efficiency. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The purpose of the utility model is to provide a countercurrent extraction device with airflow stirring function, which can stir the raw materials at the bottom and improve the extraction efficiency. To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] (II) Technical solution

[0007] A countercurrent extraction device with airflow stirring function comprises a shell and a motor. The shell is placed at an angle and has a main shaft rotatably arranged therein. The lower end of the main shaft passes through the shell and is connected to the motor output shaft. A spiral blade is arranged around the main shaft. A first tumbling tube is arranged at the lower end inside the shell. One end of the first tumbling tube is located inside the shell and the other end is located outside the shell and is connected to an air transmission device. The main shaft is a hollow structure with a plurality of tumbling air holes on its surface. A second tumbling tube is passed through the main shaft and the higher end of the second tumbling tube is connected to the air transmission device.

[0008] Furthermore, an isolation cover is provided on one end of the first tumbling tube located in the shell, the bottom of the isolation cover is fixedly connected to the inner wall of the shell, the top is closed, and a plurality of air outlets are opened on the side, and a baffle is provided outside the air outlet, and the opening of the baffle faces downward.

[0009] Furthermore, it also includes a buffer tank, the top of which is connected to the outlet end of the first air pump through an air inlet pipe, and the bottom is provided with a discharge pipe, and the first tumbling pipe is connected to the bottom of the buffer tank and is higher than the discharge pipe.

[0010] Furthermore, the second tumbling tube is connected to the air outlet end of the second air pump.

[0011] Furthermore, the outer wall of the second tumbling tube is connected to a plurality of bearings via a support frame, and the bearings are clamped on the inner wall of the main shaft.

[0012] Furthermore, the distribution density of the tumbling air holes on the main shaft decreases from low to high.

[0013] Furthermore, a circulation pipe is provided at the lower end of the shell, and the circulation pipe is connected to a plurality of nozzles after passing through a circulation pump, and the plurality of nozzles are distributed at the top of the shell.

[0014] Furthermore, a filtering device is provided at the portion of the circulation pipe located inside the shell.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model has obvious advantages and beneficial effects, specifically:

[0017] 1. The first tumbling tube outputs airflow to stir the raw materials at the bottom of the shell, ensuring that the raw materials at the bottom of the shell are fully mixed with the solvent, improving the extraction efficiency, and promoting the dispersion of bulk raw materials, which is beneficial to material transmission; at the same time, the tumbling holes on the surface of the main shaft stir the raw materials on the spiral blades and help increase the amount of bubbles in the solvent, further improving the extraction efficiency.

[0018] 2. A buffer tank is provided between the first tumbling tube and the air pump. The buffer tank is used to store a small amount of solvent flowing into the first tumbling tube to avoid damage to the air pump. At the same time, the first tumbling tube is connected to the bottom of the buffer tank, so that the solvent can return to the shell with the air flow, and the drain pipe at the bottom can empty the liquid and impurities in the buffer tank.

[0019] 3. Through the circulation pipe and circulation pump, the high-concentration liquid is sprayed onto the raw materials on the spiral blades through the nozzle, so that the raw materials can be fully wetted to avoid their inability to contact and mix with the solvent due to buoyancy, thereby improving the extraction efficiency. At the same time, the mixed liquid with lower concentration on the upper part of the shell is promoted to flow downward, thereby improving the extraction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the structure of the isolation cover;

[0023] Figure 3 It is a schematic diagram of the internal structure of the spindle;

[0024] Figure 4 It is a cross-sectional view of the second tumbling tube and the main shaft.

[0025] Description of Figure Numbers:

[0026] 1. Housing; 2. Motor; 3. Spindle;

[0027] 301, tumbling air hole 4, spiral blade; 5, first air pump;

[0028] 6. Second air pump; 7. First tumbling tube; 8. Second tumbling tube;

[0029] 9. Isolation cover; 901. Air outlet; 902. Baffle;

[0030] 10. Bearing; 11. Support frame; 12. Buffer tank;

[0031] 13. Intake pipe; 14. Exhaust pipe; 15. Circulation pump;

[0032] 16. Circulation pipe; 17. Nozzle. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0038] See also Figures 1 to 4 As shown, a countercurrent extraction device with airflow stirring function includes a shell 1 and a motor 2. The shell 1 is placed at an angle, and a main shaft 3 is rotatably arranged therein. The lower end of the main shaft 3 passes through the shell and is connected to the output shaft of the motor 2. A spiral blade 4 is arranged around the main shaft 3, and it is characterized in that: a first tumbling tube 7 is arranged at the lower end inside the shell 1, one end of the first tumbling tube 7 is located inside the shell 1, and the other end is located outside the shell 1 and is connected to the gas transmission equipment; the main shaft 3 is a hollow structure, and a plurality of tumbling air holes 301 are arranged on its surface, and a second tumbling tube 8 is passed through the main shaft 3, and the higher end of the second tumbling tube 8 is connected to the air outlet end of the second air pump 6.

[0039] Through the above technical scheme, the first churning tube 7 is used to output airflow to stir the raw materials at the bottom of the shell 1, thereby ensuring that the raw materials at the bottom of the shell 1 and the solvent are fully mixed, improving the extraction efficiency, and promoting the dispersion of bulk raw materials, which is beneficial to material transmission; at the same time, the churning air holes 301 on the surface of the main shaft 3 stir the raw materials on the spiral blades 4 and help increase the amount of bubbles in the solvent, further improving the extraction efficiency.

[0040] It is worth mentioning that in order to prevent the raw materials from entering the first tumbling tube 7, Figure 2 An isolation cover 9 is provided on one end of the first tumbling pipe 7 located in the shell 1. The bottom of the isolation cover 9 is fixedly connected to the inner wall of the shell 1, the top is closed, and a plurality of air outlets 901 are opened on the side. A baffle 902 is provided outside the air outlet 901, and the opening of the baffle 902 faces downward;

[0041] Through the above technical solution, the baffle 902 is used to make the air outlet direction of the first tumbling pipe 7 downward, so as to prevent the granular raw materials from falling in.

[0042] Furthermore, the utility model further comprises a buffer tank 12, the top of which is connected to the outlet end of the first air pump 5 through an air inlet pipe 13, and a discharge pipe 14 is provided at the bottom, and the first tumbling pipe 7 is connected to the bottom of the buffer tank 12 and is higher than the discharge pipe 14;

[0043] Through the above scheme, the buffer tank 12 is used to store a small amount of solvent flowing into the first tumbling tube 7 to prevent it from damaging the air pump. At the same time, the first tumbling tube 7 is connected to the bottom of the buffer tank 12, so that the solvent can return to the shell 1 with the air flow, and the drain pipe 14 at the bottom can empty the liquid and impurities in the buffer tank 12.

[0044] It is understandable that if Figure 3 and Figure 4 The outer wall of the second tumbling tube 8 is connected to a plurality of bearings 10 through a support frame 11, and the bearings 10 are stuck on the inner wall of the main shaft 3, thereby ensuring the stability of the second tumbling tube 8 and not affecting the rotation of the main shaft 3.

[0045] Preferably, the tumbling air holes 301 on the main shaft 3 have a distribution density that decreases from low to high, so that more airflow is output from the bottom.

[0046] As another example, Figure 1 A circulation pipe 16 is also provided at the lower end of the shell 1. The part of the circulation pipe 16 located inside the shell 1 is provided with a filtering device to prevent impurities from being sucked in. The circulation pipe 16 is connected to a plurality of nozzles 17 after passing through the circulation pump 15. The plurality of nozzles 17 are distributed at the top of the shell 1. The liquid with high concentration is sprayed onto the raw material on the spiral blade 4 through the circulation pipe 16 and the circulation pump 15, so that the raw material can be fully wetted to prevent it from being unable to contact and mix with the solvent due to buoyancy, thereby improving the extraction efficiency. At the same time, the mixed liquid with low concentration in the upper part of the shell 1 is promoted to flow downward, thereby improving the extraction efficiency.

[0047] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A countercurrent extraction device with airflow stirring function, comprising a housing (1) and a motor (2), wherein the housing (1) is placed obliquely, and a main shaft (3) is rotatably arranged therein, wherein the lower end of the main shaft (3) penetrates the housing and is connected to the output shaft of the motor (2), and a spiral blade (4) is arranged around the main shaft (3), characterized in that: A first tumbling tube (7) is provided at the lower end of the shell (1), one end of the first tumbling tube (7) is located inside the shell (1), and the other end is located outside the shell (1) and connected to the gas transmission equipment; the main shaft (3) is a hollow structure, a plurality of tumbling air holes (301) are provided on its surface, and a second tumbling tube (8) is passed through the main shaft (3), and the higher end of the second tumbling tube (8) is connected to the gas transmission equipment.

2. The countercurrent extraction device with airflow stirring function according to claim 1, characterized in that: An isolation cover (9) is provided on one end of the first tumbling tube (7) located inside the shell (1); the isolation cover (9) is fixedly connected to the inner wall of the shell (1) at the bottom, is closed at the top, and has a plurality of air outlets (901) on the side; a baffle (902) is provided outside the air outlet (901), and the opening of the baffle (902) faces downward.

3. The countercurrent extraction device with airflow stirring function according to claim 1, characterized in that: It also comprises a buffer tank (12), the top of which is connected to the outlet end of the first air pump (5) via an air inlet pipe (13), and the bottom of which is provided with a discharge pipe (14), and the first tumbling pipe (7) is connected to the bottom of the buffer tank (12) and is higher than the discharge pipe (14).

4. The countercurrent extraction device with airflow stirring function according to claim 1, characterized in that: The second tumbling pipe (8) is connected to the air outlet end of the second air pump (6).

5. The countercurrent extraction device with airflow stirring function according to claim 1, characterized in that: The outer wall of the second tumbling tube (8) is connected to a plurality of bearings (10) via a support frame (11), and the bearings (10) are clamped on the inner wall of the main shaft (3).

6. The countercurrent extraction device with airflow stirring function according to claim 1, characterized in that: The distribution density of the tumbling air holes (301) on the main shaft (3) decreases from low to high.

7. The countercurrent extraction device with airflow stirring function according to claim 1, characterized in that: A circulation pipe (16) is also provided at the lower end of the shell (1). The circulation pipe (16) is connected to a plurality of nozzles (17) after passing through a circulation pump (15). The plurality of nozzles (17) are distributed at the top of the shell (1).

8. The countercurrent extraction device with airflow stirring function according to claim 7, characterized in that: The portion of the circulation pipe (16) located inside the shell (1) is provided with a filtering device.

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