Purifying device for glycyrrhizic acid

Abstract

The glycyrrhizic acid purification device comprises a tank body, an oscillator and a heating mechanism which are arranged in the tank body, an air exhaust hood which is arranged in the tank body and is positioned above the liquid level, and a condensation mechanism which is communicated with the top of the air exhaust hood through a steam supply pipe, wherein the condensation mechanism comprises a refrigerant cavity and a steam channel separated from the refrigerant cavity through a heat conduction partition plate. The glycyrrhizic acid raw material in the tank body is heated and vibrated to generate glycyrrhizic acid-containing steam, the glycyrrhizic acid-containing steam is guided into the steam passage through the exhaust hood and the steam conveying pipe and is subjected to condensation heat exchange with a refrigerant in the refrigerant cavity, so that crystals appear on the inner wall of the steam passage, and finally the crystals are scraped out and collected by the scraping mechanism; therefore, the glycyrrhizic acid is efficiently extracted and purified; in addition, turbulent flow air is formed through the fixed rotational flow blades and the rotating blades on the rotating shaft, so that the steam flow is evenly guided into a long and narrow steam channel, and condensation heat exchange is evenly carried out on the steam flow and a refrigerant.

Description

Technical Field

[0001] The invention relates to the technical field of glycyrrhizic acid extraction, in particular to a glycyrrhizic acid purification device. Background Art

[0002] Licorice is a tonic Chinese herbal medicine. The medicinal parts are the roots and rhizomes. The medicinal properties of the root are cylindrical, 25 to 100 cm long and 0.6 to 3.5 cm in diameter. It has the functions of clearing away heat and detoxifying, removing phlegm and relieving cough, and treating abdominal pain. Licorice contains a variety of chemical components, the main components of which are glycyrrhizic acid and glycyrrhizin. The chemical composition of licorice is extremely complex. So far, the compounds isolated from licorice include glycyrrhizin, glycyrrhetinic acid, glycyrrhizin, isoliquiritigenin, neoliquiritigenin, neoisoliquiritigenin, glycyrrhizin, isoliquiritigenin, glycyrrhizin, glycyrrhizinol, isoliquiritigenin, glycyrrhizin, glycyrrhizinol, glycyrrhizinol, 7-methylcoumarin, umbelliferone and dozens of other compounds. Among them, glycyrrhizic acid is the most important active ingredient in licorice.

[0003] Patent application No. 202321588131.7 in the prior art discloses a device for purifying glycyrrhizic acid, which relates to the technical field of chemical product manufacturing. It includes a liquid collecting mechanism and a water flow vacuum pump; the liquid collecting mechanism includes a liquid collecting bottle and a neck tube detachably connected to the liquid collecting bottle; the tube wall of the neck tube includes an inner wall, an outer wall and a hollow cavity, the upper end of the hollow cavity is closed, the lower end is open, and the hollow cavity is connected to the liquid collecting bottle by means of the lower end opening; an air suction nozzle connected to the hollow cavity is arranged on the outer wall of the neck tube, and the air suction nozzle is connected to the filter head; the filter head is connected to the water flow vacuum pump through the air suction pipe. The beneficial effects of the utility model are: the vacuum nozzle is isolated by the double-layer structure of the neck tube to prevent the filtrate from flowing into the vacuum nozzle and causing pollution to it, and the filtrate is conveniently discharged through the detachable liquid collecting bottle and the neck tube, and the operation is flexible and easy to use.

[0004] However, in the prior art, the extraction and treatment efficiency of glycyrrhizic acid by suction filtration is low, and it is not convenient for factory-scale processing and preparation. Summary of the invention

[0005] The purpose of the present invention is to provide a device for purifying glycyrrhizic acid, so as to solve the problem of how to improve the extraction and purification efficiency of glycyrrhizic acid.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The present invention provides a glycyrrhizic acid purification device, comprising a tank body, an oscillator and a heating mechanism arranged in the tank body, an exhaust hood arranged in the tank body and located above the liquid surface, and a condensing mechanism connected to the top of the exhaust hood through a steam supply pipe;

[0008] The condensing mechanism comprises a refrigerant cavity and a steam channel separated from the refrigerant cavity by a heat-conducting partition; the exhaust end of the steam delivery pipe is connected to the top of the steam channel; and a scraping mechanism is arranged in the steam channel.

[0009] Furthermore, a pressure relief valve is provided on the top of the tank body, a feed pipe is provided in the middle thereof, and a slag discharge mechanism is provided at the bottom thereof;

[0010] The slag discharge mechanism comprises an auger conveyor and a discharge pipe connected to the bottom of the tank body, and a solenoid valve is arranged on the discharge pipe.

[0011] Furthermore, a support plate is provided on the inner top of the tank body; a plurality of shaft sleeves are provided on the support plate, guide rods corresponding to the shaft sleeves are provided on the top of the exhaust hood, and a lifting and lowering adjustment mechanism for adjusting the lifting of the exhaust hood is provided on the top of the tank body; a liquid level sensor for detecting the liquid level in the tank body is also provided on the support plate; the lifting and lowering adjustment mechanism is an electric telescopic cylinder that controls the extension and retraction based on the liquid level sensor.

[0012] Furthermore, the top of the exhaust hood is connected to the steam supply pipe located outside the tank body through a telescopic tube, and a fan is arranged on the steam supply pipe.

[0013] Furthermore, refrigerant is injected into the refrigerant cavity through a delivery pump I, and the top of the refrigerant cavity is also connected to a liquid storage tank through an overflow pipe.

[0014] Furthermore, the scraping mechanism includes a conveyor belt arranged in the steam channel, a plurality of driving rollers supporting and driving the conveyor belt, and a plurality of scrapers arranged on the conveyor belt;

[0015] The scraper is in contact with the inner wall of the steam channel, a cleaning brush for cleaning the scraper is arranged at the bottom of the conveyor belt; a receiving hopper is arranged at the bottom of the steam channel; and the driving roller is driven to rotate by a motor.

[0016] Furthermore, the top of the steam duct is connected to the steam supply pipe through multiple spoiler pipes; a fixed swirl frame I, a fixed swirl frame II, and rotating blades located between the fixed swirl frame I and the fixed swirl frame II are arranged in the spoiler pipe; wherein a flaring pipe connected to the steam duct is also arranged at the lower end of the spoiler pipe.

[0017] Furthermore, the internal structure of the fixed swirl frame I is the same as that of the fixed swirl frame II; a plurality of fixed swirl blades are arranged in the fixed swirl frame I, and each of the plurality of fixed swirl blades is connected to a shaft sleeve; wherein a rotating shaft is arranged in the shaft sleeve through a bearing, and the rotating blades are arranged on the rotating shaft.

[0018] Furthermore, the oscillator is an ultrasonic oscillator, and the heating mechanism includes a plurality of electric heaters arranged in the tank body and surrounding the oscillator; a temperature sensor for detecting the temperature of the solution is also arranged in the tank body; the electric heater is temperature-controlled by a controller, and the controller controls the electric heater based on the detection value of the temperature sensor.

[0019] Compared with the prior art, the present invention has the following beneficial technical effects: in the present invention, the glycyrrhizic acid steam generated by heating and shaking the glycyrrhizic acid raw material in the tank body is introduced into the steam channel through the exhaust hood and the steam supply pipe, and condenses and exchanges heat with the refrigerant in the refrigerant cavity, so that crystals appear on the inner wall of the steam channel, and are finally scraped and collected by the scraping mechanism, so as to achieve efficient processing of glycyrrhizic acid extraction and purification; in addition, the present application utilizes the fixed swirl blades and the rotating blades on the rotating shaft to form turbulent wind, so as to uniformly introduce the steam airflow into the narrow and long steam channel, so as to uniformly condense and exchange heat with the refrigerant. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 1 This is a schematic diagram of the main structure of the glycyrrhizic acid purification device of the present invention;

[0022] Figure 2 It is a schematic diagram of the condensation mechanism in the glycyrrhizic acid purification device of the present invention;

[0023] Figure 3 for Figure 2 Schematic cross section;

[0024] Figure 4 for Figure 2 Schematic diagram of the middle scraper mechanism;

[0025] Figure 5 for Figure 3 The enlarged schematic diagram at A in the middle;

[0026] Figure 6 The diagram is a structural diagram of a fixed swirl frame in a turbulent tube in the glycyrrhizic acid purification device of the present invention.

[0027] Description of reference numerals: 100, tank body; 101, pressure relief valve; 102, slag discharge mechanism; 103, support plate; 104, feed pipe; 200, oscillator; 300, heating mechanism; 301, temperature sensor; 400, lifting and lowering adjustment mechanism; 401, exhaust hood; 4011, guide rod; 402, liquid level sensor; 500, telescopic tube; 600, fan; 601, steam supply pipe; 700, condensing mechanism; 701, refrigerant chamber; 702, steam channel; 703, conveyor belt; 7031, driving roller; 7032, scraper; 704, cleaning brush; 705, spoiler; 706, fixed swirl frame I; 7061, fixed swirl blade; 7062, shaft sleeve; 707, rotating shaft; 708, fixed swirl frame II; 709, rotating blade; 710, flaring pipe; 800, delivery pump I; 900, liquid storage tank; 901, delivery pump II. DETAILED DESCRIPTION

[0028] like Figure 1 As shown, this embodiment discloses a device for purifying glycyrrhizic acid, comprising a tank body 100, an oscillator 200 and a heating mechanism 300 installed in the tank body 100, an exhaust hood 401 installed in the tank body 100 and located above the liquid surface, and a condensing mechanism 700 connected to the top of the exhaust hood 401 through a steam supply pipe 601; wherein the condensing mechanism 700 comprises a refrigerant cavity 701, and a steam channel 702 separated from the refrigerant cavity 701 by a heat-conducting partition; the exhaust end of the steam supply pipe 601 is connected to the top of the steam channel 702; and a scraping mechanism is installed in the steam channel 702.

[0029] The oscillator 200200 is an ultrasonic oscillator, and the heating mechanism 300 includes a plurality of electric heaters installed in the tank body 100 and surrounding the oscillator 200; a temperature sensor 301 for detecting the temperature of the solution is also installed in the tank body 100; the electric heater is temperature-controlled by a controller, and the controller controls the electric heater based on the detection value of the temperature sensor 301.

[0030] When in use, the glycyrrhizic acid steam generated by heating and shaking the glycyrrhizic acid raw material in the tank body 100 is introduced into the steam channel 702 through the exhaust hood 401 and the steam supply pipe 601, and condenses and exchanges heat with the refrigerant in the refrigerant cavity 701, so that crystals appear on the inner wall of the steam channel 702, and is finally scraped out and collected by the scraping mechanism.

[0031] In this embodiment, Figure 1 As shown, a pressure relief valve 101 is installed on the top of the tank body 100 for emergency pressure relief, a feed pipe 104 is installed in the middle for adding licorice raw materials and solvents, and a slag discharge mechanism 102 is installed at the bottom to discharge the generated waste in time.

[0032] In specific implementation, the slag discharge mechanism 102 includes an auger conveyor and a discharge pipe connected to the bottom of the tank body 100, and a solenoid valve is installed on the discharge pipe. When slag discharge is required, the solenoid valve is controlled to open and the auger conveyor is started to transport the slag.

[0033] In this embodiment, a support plate 103 is installed on the inner top of the tank body 100; a plurality of sleeves are installed on the support plate 103, guide rods 4011 corresponding to the sleeves are installed on the top of the exhaust hood 401, and a lifting and lowering adjustment mechanism 400 for adjusting the lifting and lowering of the exhaust hood 401 is installed on the top of the tank body 100; a liquid level sensor 402 for detecting the liquid level in the tank body 100 is also installed on the support plate 103; the lifting and lowering adjustment mechanism 400 is an electric telescopic cylinder that controls the extension and retraction based on the liquid level sensor 402.

[0034] In this embodiment, in order to improve the suction efficiency of the solvent in the tank body 100, the vacuum hood 401 is designed to have the same structure as the inner diameter of the tank body 100. Specifically, a sealing ring is installed on the outer peripheral side of the vacuum hood 401, so that the depth of the vacuum hood 401 is adjusted according to the liquid level, so as to form a small-scale negative pressure environment above the liquid surface by using the vacuum hood 401, thereby achieving the evaporation efficiency of quickly extracting the licorice liquid in the tank body 100.

[0035] In this embodiment, a liquid level sensor 402 is specifically installed on the exhaust hood 401 to detect the liquid level below the exhaust hood 401 .

[0036] In this embodiment, the top of the exhaust hood 401 is connected to the steam supply pipe 601 located outside the tank body 100 through a telescopic tube 500. A fan 600 is installed on the steam supply pipe 601 to guide the gas volatilized in the steam supply pipe 601 into the condensation mechanism for condensation.

[0037] In this embodiment, refrigerant is injected into the refrigerant cavity 701 through a delivery pump I 800, and the top of the refrigerant cavity 701 is also connected to a liquid storage tank 900 through an overflow pipe; in specific implementation, the heated refrigerant in the liquid storage tank 900 can be used to quantitatively supplement the solvent into the tank body 100 through a delivery pump II 901.

[0038] like Figure 2-4As shown, the scraper mechanism includes a conveyor belt 703 installed in the steam channel 702, a plurality of driving rollers 7031 supporting and driving the conveyor belt 703, and a plurality of scrapers 7032 installed on the conveyor belt 703; wherein the scrapers 7032 are in contact with the inner wall of the steam channel 702, and a cleaning brush 704 for cleaning the scrapers 7032 is installed at the bottom of the conveyor belt 703; a receiving hopper is installed at the bottom of the steam channel 702; and the driving rollers 7031 are driven to rotate by a motor.

[0039] The steam containing glycyrrhizic acid entering the steam channel 702 is easily attached to the inner wall of the steam channel 702 after condensation, so that the glycyrrhizic acid crystals can be scraped downward in time by the scraper 7032 driven by the motor.

[0040] like Figure 3 and Figure 5 As shown, the top of the steam duct 702 is connected to the steam supply pipe 601 through a plurality of spoiler tubes 705; a fixed swirl frame I 706, a fixed swirl frame II 708, and a rotating blade 709 located between the fixed swirl frame I 706 and the fixed swirl frame II 708 are installed in the spoiler tube 705; a flared tube 710 connected to the steam duct 702 is also installed at the lower end of the spoiler tube 705; the flared tube 710 is used to facilitate the steam flow to evenly enter the narrow steam duct 702.

[0041] In this embodiment, the internal structure of the fixed swirl frame I 706 is the same as that of the fixed swirl frame II 708; a plurality of fixed swirl blades 7061 are installed in the fixed swirl frame I 706, and the plurality of fixed swirl blades 7061 are each connected to a shaft sleeve 7062; wherein a rotating shaft 707 is installed in the shaft sleeve 7062 via a bearing, and the rotating blade 709 is installed on the rotating shaft 707.

[0042] Specifically, both ends of the rotating shaft 707 are respectively installed on the fixed swirl frame I 706 and the fixed swirl frame II 708 through shaft sleeves 7062. After the steam airflow enters the turbulence tube 705, the fixed swirl blades 7061 and the rotating blades 709 on the rotating shaft 707 are used to form turbulent wind, thereby evenly guiding the steam airflow into the narrow steam duct 702 so as to evenly perform condensation heat exchange with the refrigerant.

[0043] The above embodiments are only descriptions of the preferred methods of the invention, and are not intended to limit the scope of the invention. Without departing from the design spirit of the invention, various modifications and improvements made to the technical solutions of the invention by ordinary technicians in this field should fall within the protection scope of the claims of the invention.

Claims

1. A device for purifying glycyrrhizic acid, characterized in that: It comprises a tank body (100), an oscillator (200) and a heating mechanism (300) arranged in the tank body (100), an exhaust hood (401) arranged in the tank body (100) and located above the liquid surface, and a condensing mechanism (700) connected to the top of the exhaust hood (401) via a steam supply pipe (601); The condensing mechanism (700) comprises a refrigerant cavity (701) and a steam channel (702) separated from the refrigerant cavity (701) by a heat-conducting partition; the exhaust end of the steam supply pipe (601) is connected to the top of the steam channel (702); and a scraping mechanism is arranged in the steam channel (702).

2. The glycyrrhizic acid purification device according to claim 1, characterized in that: The tank body (100) is provided with a pressure relief valve (101) at the top, a feed pipe (104) at the middle, and a slag discharge mechanism (102) at the bottom; The slag discharge mechanism (102) comprises an auger conveyor and a discharge pipe connected to the bottom of the tank body (100), and a solenoid valve is arranged on the discharge pipe.

3. The purification device for glycyrrhizic acid according to claim 2, characterized in that: A support plate (103) is arranged on the inner top of the tank body (100); a plurality of shaft sleeves are arranged on the support plate (103); guide rods (4011) corresponding to the shaft sleeves are arranged on the top of the exhaust hood (401); a lifting and lowering adjustment mechanism (400) for adjusting the lifting and lowering of the exhaust hood (401) is arranged on the top of the tank body (100); a liquid level sensor (402) for detecting the liquid level in the tank body (100) is also arranged on the support plate (103); the lifting and lowering adjustment mechanism (400) is an electric telescopic cylinder that is controlled to extend and retract based on the liquid level sensor (402).

4. The device for purifying glycyrrhizic acid according to claim 3, characterized in that: The top of the exhaust hood (401) is connected to a steam supply pipe (601) located outside the tank body (100) through a telescopic tube (500), and a fan (600) is arranged on the steam supply pipe (601).

5. The device for purifying glycyrrhizic acid according to claim 4, characterized in that: Refrigerant is injected into the refrigerant cavity (701) through a delivery pump I (800), and the top of the refrigerant cavity (701) is also connected to a liquid storage tank (900) through an overflow pipe.

6. The device for purifying glycyrrhizic acid according to claim 5, characterized in that: The scraping mechanism comprises a conveyor belt (703) arranged in the steam channel (702), a plurality of driving rollers (7031) supporting and driving the conveyor belt (703), and a plurality of scrapers (7032) arranged on the conveyor belt (703); The scraper (7032) contacts the inner wall of the steam channel (702), and a cleaning brush (704) for cleaning the scraper (7032) is arranged at the bottom of the conveyor belt (703); a receiving hopper is arranged at the bottom of the steam channel (702); and the driving roller (7031) is driven to rotate by a motor.

7. The device for purifying glycyrrhizic acid according to claim 6, characterized in that: The top of the steam duct (702) is connected to the steam supply pipe (601) through a plurality of spoiler pipes (705); a fixed swirl frame I (706), a fixed swirl frame II (708), and a rotating blade (709) located between the fixed swirl frame I (706) and the fixed swirl frame II (708) are arranged in the spoiler pipe (705); and a flaring pipe (710) connected to the steam duct (702) is also arranged at the lower end of the spoiler pipe (705).

8. The device for purifying glycyrrhizic acid according to claim 7, characterized in that: The fixed swirl frame I (706) has the same internal structure as the fixed swirl frame II (708); a plurality of fixed swirl blades (7061) are arranged in the fixed swirl frame I (706), and each of the plurality of fixed swirl blades (7061) is connected to a shaft sleeve (7062); a rotating shaft (707) is arranged in the shaft sleeve (7062) via a bearing, and the rotating blades (709) are arranged on the rotating shaft (707).

9. The device for purifying glycyrrhizic acid according to claim 1, characterized in that: The oscillator (200) (200) is an ultrasonic oscillator, and the heating mechanism (300) includes a plurality of electric heaters arranged in the tank body (100) and surrounding the oscillator (200); a temperature sensor (301) for detecting the temperature of the solution is also arranged in the tank body (100); the temperature of the electric heater is controlled by a controller, and the controller controls the electric heater based on the detection value of the temperature sensor (301).

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