Device for recovering volatile curcuma oil in drying process

Abstract

The utility model discloses a device for recovering volatile curcuma oil in a drying process, which comprises a drying oven, a condenser, an oil-water collector, a curcuma oil collecting box and a controller, and realizes the purposes that the retention rate of medicinal components is high after the curcuma is dried, the curcumin is completely recovered in the drying process, and the recovered curcumin does not deteriorate. A plurality of sensors are arranged, the sensors can monitor the states in the drying oven, the condenser and the oil-water collector in real time and transmit data to the controller, the controller accurately controls operation of equipment such as the heating device, the fan and the electric valve according to the data, and stability and high efficiency in the drying and recycling process are guaranteed; through intelligent control of the controller, automatic operation is achieved in the whole recovery process, the curcuma oil recovery device has the advantages of being efficient in recovery, accurate in control, high in automation degree, reasonable in material selection, environmentally friendly, capable of saving energy, good in flexibility and the like, and a reliable solution is provided for production and recovery of curcuma oil.

Description

Technical Field

[0001] The utility model relates to the technical field of turmeric processing, in particular to a device for recovering volatilized turmeric oil during a drying process. Background Art

[0002] Turmeric, a Chinese medicine name. It is the dried rhizome of Curcuma longa L., a plant of the ginger family. It is dug up in winter when the stems and leaves wither, washed, boiled or steamed until thoroughly cooked, and dried. After drying, the turmeric is irregularly oval, cylindrical or spindle-shaped, often curved, and some have short forked branches, 2 to 5 cm long and 1 to 3 cm in diameter. The surface is dark yellow, rough, with wrinkled textures and obvious links, and there are circular branch marks and root marks. The texture is solid and not easy to break. The cross section is brownish yellow to golden yellow, horny, with a waxy luster, obvious endodermal rings, and scattered vascular bundles in dots. It has a unique aroma and tastes bitter and spicy.

[0003] However, during the drying process of turmeric, due to the high drying temperature, part of the turmeric oil will evaporate into the air along with water vapor, resulting in the loss of turmeric oil. The main active ingredient in turmeric oil is curcumin, which is also called curcumin and acid yellow. It is a natural phenolic antioxidant extracted from the rhizomes of turmeric, zedoary, mustard, curry, turmeric and other plants of the ginger family. The main chain is an unsaturated aliphatic and aromatic group, belonging to the diketone compound, and is a commonly used seasoning and food coloring. It is non-toxic and has a chemical formula of C 21 H 20 O6. Curcumin is a natural compound with good anti-inflammatory and anti-cancer properties. Turmeric contains about 3% to 6% curcumin, which is a very rare pigment with a diketone structure in the plant kingdom. Curcumin is an orange-yellow crystalline powder with a slightly bitter taste and is insoluble in water. In food production, it is mainly used for coloring sausage products, canned foods, and marinated products. Curcumin has lipid-lowering, anti-tumor, anti-inflammatory, choleretic, and antioxidant effects. In addition, some scientists have found that curcumin helps treat drug-resistant tuberculosis.

[0004] The invention patent application with the publication number CN114413510A discloses a volatile oil recovery device in the heat pump drying process of Chinese herbal medicine containing essential oils, including a recovery system, which is respectively connected to a heat pump heating and dehumidification system and a hot air circulation system. The invention can achieve the purpose of higher retention rate of effective components of dried products of Chinese herbal medicine containing essential oils, more thorough recovery of essential oils (volatile oils) in the drying process, less drying energy consumption, and higher economic value of drying production.

[0005] However, curcumin is sensitive to light, heat and iron ions, and has poor light resistance, heat resistance and iron ion resistance. In addition, curcumin has two hydroxyl groups at both ends, which causes a conjugation effect of electron cloud deviation under alkaline conditions. If the volatile oil recovery device disclosed in the above patent is used to recover turmeric oil during the drying process of turmeric, curcumin is easily deteriorated due to problems such as drying temperature, device material and acidity and alkalinity. Utility Model Content

[0006] The utility model aims to provide a device for recovering volatilized turmeric oil during the drying process, so as to achieve the purpose of high retention rate of medicinal components of turmeric after drying, complete recovery of curcumin during the drying process, and no deterioration of the recovered curcumin.

[0007] In order to achieve the above-mentioned invention object, the technical solution of the utility model is as follows:

[0008] A device for recovering volatilized turmeric oil during a drying process comprises a drying oven, a condenser, an oil-water collector, a turmeric oil collecting box and a controller.

[0009] A heating device is provided at the bottom of the oven, a temperature sensor I is provided inside the oven, an air outlet is provided at the top of the oven, the air outlet is communicated with the inlet of the condenser, the air outlet is provided with a humidity sensor, a pH sensor and a fan, a temperature sensor II is provided inside the condenser, the outlet of the condenser is connected with the inlet of the oil-water collector, an oil-water interface sensor is provided inside the oil-water collector, outlets are provided on the side and bottom of the oil-water collector, electric valves I are provided at the outlets of the oil-water collector, the side outlets of the oil-water collector are connected with the inlet of the turmeric oil collection box, the internal materials of the oven, condenser, oil-water collector, turmeric oil collection box and connecting pipes are all opaque polymer materials, and the temperature sensor I, temperature sensor II, humidity sensor, oil-water interface sensor, pH sensor, fan, heating device and electric valve I are respectively connected with controller signals.

[0010] The heating device at the bottom of the oven is a heating furnace, the oven is connected to the heating furnace, and a drawer for containing turmeric is arranged between the oven and the heating furnace.

[0011] The drawer comprises a shell and a grid-shaped drawer plate, the top and bottom of the shell are respectively connected to the oven and the heating furnace, the top and bottom of the shell are provided with openings communicating with the oven and the heating furnace, and the grid-shaped drawer plate is connected to the shell via a sliding connection assembly.

[0012] The sliding connection assembly comprises guide rails on the inner walls of both sides of the shell and sliders are arranged on both sides of the grid-shaped drawer plate and are slidably matched with the guide rails; turmeric can be put in and taken out through the grid-shaped drawer plate.

[0013] The air outlet at the top of the oven passes through a vertical pipe, one side of the top of the vertical pipe is connected to a fan, the other side of the vertical pipe is connected to a condenser, and the humidity sensor is arranged at the top of the vertical pipe.

[0014] The condenser includes a condenser tube, a jacket is provided on the outer sleeve of the condenser tube, a coolant inlet is provided on the bottom of the jacket near the condenser tube outlet, a coolant outlet is provided on the top of the jacket near the condenser tube inlet, the temperature sensor II is arranged in the condenser tube, a flow meter and an electric valve II are provided on the coolant inlet, and the flow meter and the electric valve II are respectively connected to the controller signal; the temperature sensor II monitors the condensation temperature, the flow meter detects the flow rate of the coolant in real time, and the controller controls the electric valve II of the condenser according to the feedback data to adjust the flow rate of the coolant, thereby adjusting the cooling efficiency of the condenser to ensure that the volatile matter is effectively condensed into a liquid state.

[0015] The cross-sectional area ratio of the condenser tube to the jacket is 2:3. Curcumin is easy to decompose under high temperature conditions, so it needs to be quickly cooled when entering the condenser tube. The cooling water and steam exchange heat at the condenser tube wall. The heat of the steam at the tube wall is absorbed by the cooling water and condensed into liquid. The cooling water is heated at the tube wall to achieve energy conversion. Controlling the volume ratio to be 2:3 can effectively reduce the temperature of the coolant. When the condenser tube refluxes, an impact force will be applied to the outer wall. The entire outer wall of the condenser tube and the inner wall of the jacket will be subjected to the compressive stress of the condensed water in the jacket, and the condenser tube will be subjected to the pressure of the evaporated gas. For the same fluid, the larger the force area, the smaller the flow rate. In order to make the material evenly stressed, reduce the impact on the jacket and the impact on the outer wall of the condenser tube when the condensed water enters, control the fluid flow rate, and prevent serious bending and deformation. The 2:3 structure will make the entire condensing device evenly stressed.

[0016] A pH sensor is also provided in the oil-water collector, and the pH sensor is connected to the controller signal. The pH sensor monitors the pH value in the oil-water collector in real time. Since curcumin has poor alkali resistance, when the pH sensor monitors that the pH value in the oil-water collector is higher than the set value, the controller sends an alarm to the staff.

[0017] Beneficial effects of the utility model:

[0018] 1. In the utility model, the turmeric raw material to be dried is placed in the drying oven, the controller parameters are set, including the target drying temperature, humidity threshold, pH range, etc., and the drying system is started; the controller controls the heating device to start working according to the preset program, gradually raising the temperature to the set drying temperature, the temperature sensor I monitors the temperature in the box in real time, and transmits its data to the controller, when the temperature reaches the set value and stabilizes, the controller keeps the heating device running at a constant power to maintain the stability of the drying environment; the humidity sensor continuously monitors the humidity change of the gas sucked out by the fan; the temperature sensor II in the condenser monitors the condensation temperature, and the controller adjusts the cooling efficiency of the condenser according to the feedback data to ensure that the volatiles are effectively condensed into liquid; The liquefied turmeric oil and water enter the oil-water collector together; the oil-water interface sensor inside the oil-water collector monitors the oil-water stratification. When the oil layer accumulates to a certain thickness or volume, the controller triggers the corresponding electric valve I to open and discharge the oil layer into the turmeric oil collection box; at the same time, the electric valve I at the bottom of the oil-water collector can be opened regularly or on demand to discharge the waste water after the preliminary separation and maintain the internal space of the collector to continue to receive the condensate; when the humidity sensor at the air outlet on the top of the oven detects that the gas humidity is lower than the set value, the controller controls the heating device to stop heating and enter the cooling stage; after cooling is completed, the oven is opened to take out the dried turmeric, and the controller is turned off at the same time to prepare for the next round of drying operation.

[0019] 2. The utility model can dry the material quickly and effectively. During the drying process, the temperature in the oven can be controlled in real time by the temperature sensor to ensure that curcumin will not deteriorate due to high temperature. The volatilized turmeric oil will enter the condenser through the air outlet with the hot air; the low temperature environment in the condenser makes the turmeric oil condense quickly, ensuring the efficient recovery of the turmeric oil. The utility model is equipped with multiple sensors, which can monitor the status in the oven, condenser and oil-water collector in real time and transmit the data to the controller. The controller accurately controls the operation of the heating device, fan and electric valve I and other equipment according to these data to ensure the stability and efficiency of the drying and recovery process. Through the intelligent control of the controller, the entire recovery process realizes automated operation. When the oil-water interface in the oil-water collector reaches the set value, the controller will automatically open the electric valve I to discharge the turmeric oil into the turmeric oil collection box, reducing the tediousness and error rate of manual operation. The utility model has the advantages of efficient recovery, precise control, high degree of automation, reasonable material selection, environmental protection, energy saving and good flexibility, and provides a reliable solution for the production and recovery of turmeric oil.

[0020] 3. In the utility model, the oven, condenser, oil-water collector, turmeric oil collection box and connecting pipes are all made of opaque polymer materials, which can effectively block light and prevent curcumin from being decomposed or discolored by light during the recovery process. This helps to maintain the stability and color of curcumin. The opaque polymer material does not contain iron ions or other impurities that can react chemically with curcumin, so it can avoid the unstable reaction caused by curcumin contacting with iron ions during the recovery process. The use of opaque polymer materials to make a device for recovering volatile turmeric oil can effectively protect the stability of curcumin, improve recovery efficiency, and extend the service life of the equipment.

[0021] 4. In the utility model, by installing a fan on the left side of the condenser, the oil-water mixed steam is completely blown into the condenser tube, and then stratified in the oil-water collection box. By the difference in oil-water density and the monitoring of the oil-water interface sensor, the turmeric oil lost in the drying process is collected, which is fast and efficient, and has high recovery efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The utility model is a schematic diagram of the structure of a device for recovering turmeric oil during the turmeric drying process.

[0023] Figure 2 It is a structural schematic diagram of the oil-water collector of the utility model.

[0024] Among them: 1. Oven; 2. Condenser; 3. Oil-water collector; 4. Turmeric oil collection box; 5. Fan; 6. Air outlet; 7. Heating furnace; 8. Drawer; 9. Vertical pipe; 10. Oil-water interface sensor; 11. Side outlet of oil-water collector; 12. Bottom outlet of oil-water collector; 13. pH sensor. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the embodiments, but the implementation manner of the present invention is not limited thereto.

[0026] Example 1

[0027] like Figure 1 and Figure 2As shown, the present embodiment provides a device for recovering volatilized turmeric oil during a drying process, comprising an oven 1, a condenser 2, an oil-water collector 3, a turmeric oil collection box 4 and a controller, wherein a heating device is provided at the bottom of the oven 1, a temperature sensor I is provided inside the oven 1, an air outlet 6 is provided at the top of the oven 1, the air outlet 6 is communicated with the inlet of the condenser 2, the air outlet 6 is provided with a humidity sensor, a pH sensor 13 and a fan 5, a temperature sensor II is provided inside the condenser 2, the outlet of the condenser 2 is connected to the inlet of the oil-water collector 3, an oil-water interface sensor 10 is provided inside the oil-water collector 3, outlets are provided on the side and bottom of the oil-water collector 3, electric valves I are provided at the outlets of the oil-water collector 3, the side outlet 11 of the oil-water collector is connected to the inlet of the turmeric oil collection box 4, the bottom outlet 12 of the oil-water collector is connected to a waste liquid pipe, the oven 1, The internal materials of the condenser 2, the oil-water collector 3, the turmeric oil collection box 4 and the connecting pipe are all opaque polymer materials. The temperature sensor I, the temperature sensor II, the humidity sensor, the oil-water interface sensor 10, the pH sensor 13, the fan 5, the heating device and the electric valve I are respectively connected to the controller signal. The heating device at the bottom of the oven 1 is a heating furnace 7. The oven 1 is connected to the heating furnace 7. A drawer 8 for holding turmeric is arranged between the oven 1 and the heating furnace 7; the drawer 8 includes a shell and a grid-like drawer 8 plate, the top and bottom of the shell are respectively connected to the oven 1 and the heating furnace 7, the top and bottom of the shell are provided with openings connected to the oven 1 and the heating furnace 7, and the grid-like drawer 8 plate is connected to the shell through a sliding connection assembly; the sliding connection assembly includes guide rails on the inner walls on both sides of the shell and sliders slidingly matched with the guide rails are arranged on both sides of the grid-like drawer 8 plate.

[0028] In this embodiment, the turmeric raw material to be dried is placed in a drawer 8, controller parameters are set, including target drying temperature, humidity threshold, pH range, etc., and the drying system is started; the controller controls the heating device to start working according to a preset program, gradually heating up the temperature to the set drying temperature, and the temperature sensor I monitors the temperature in the box in real time and transmits its data to the controller. When the temperature reaches the set value and stabilizes, the controller keeps the heating device running at a constant power to maintain the stability of the drying environment; the humidity sensor continuously monitors the humidity change of the gas sucked out by the fan 5; the temperature sensor II in the condenser 2 monitors the condensation temperature, and the controller adjusts the cooling efficiency of the condenser 2 according to the feedback data to ensure that the volatiles are effectively condensed into a liquid state; the liquefied turmeric oil and water are together Enter the oil-water collector 3; the oil-water interface sensor 10 inside the oil-water collector 3 monitors the oil-water stratification. When the oil layer accumulates to a certain thickness or volume, the controller triggers the electric valve I of the side outlet 11 of the oil-water collector to open, and the oil layer is discharged into the turmeric oil collection box 4; at the same time, the electric valve I of the bottom outlet 12 of the oil-water collector can be opened regularly or on demand to discharge the waste water after preliminary separation, and maintain the internal space of the collector to continue to receive condensate; when the humidity sensor of the air outlet 6 at the top of the oven 1 detects that the gas humidity is lower than the set value, the controller controls the heating device to stop heating and enter the cooling stage; after cooling is completed, pull out the grid-shaped drawer 8 to take out the dried turmeric, and turn off the controller at the same time to prepare for the next round of drying operation.

[0029] Example 2

[0030] Compared with Example 1, the present embodiment is different in that, in the present embodiment, the air outlet 6 at the top of the oven 1 passes through a vertical pipe 9, a fan 5 is connected to one side of the top of the vertical pipe 9, and the other side of the vertical pipe 9 is connected to the condenser 2, and the humidity sensor is arranged at the top of the vertical pipe 9; the condenser 2 comprises a condenser tube, a jacket is arranged on the outer sleeve of the condenser tube, a coolant inlet is arranged at the bottom of the jacket near the condenser tube outlet, a coolant outlet is arranged at the top of the jacket near the condenser tube inlet, the temperature sensor II is arranged in the condenser tube, a flow meter and an electric valve II are arranged at the coolant inlet, and the flow meter and the electric valve II are respectively connected to the controller signal; the cross-sectional area ratio of the condenser tube to the jacket is 2:3; a pH sensor 13 is also arranged in the oil-water collector 3, and the pH sensor 13 is connected to the controller signal; the remaining structures are the same as those in Example 1.

[0031] In this embodiment, by setting a fan 5 on one side of the top of the vertical pipe 9, the oil-water mixed steam can be completely blown into the condenser; the temperature sensor II in the condenser 2 monitors the condensation temperature, the flow meter detects the flow of the coolant in real time, and the controller controls the electric valve II of the condenser 2 according to the feedback data to adjust the flow of the coolant, thereby adjusting the cooling efficiency of the condenser 2 to ensure that the volatiles are effectively condensed into liquid; the pH sensor 13 in the oil-water collector 3 monitors the pH value in the oil-water collector 3 in real time. Since curcumin has poor alkali resistance, when the pH sensor 13 detects that the pH value in the oil-water collector 3 is higher than the set value, the controller sends an alarm to the staff.

[0032] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A device for recovering volatilized turmeric oil during a drying process, characterized in that: The invention comprises an oven (1), a condenser (2), an oil-water collector (3), a turmeric oil collection box (4) and a controller. The bottom of the oven (1) is provided with a heating device. The interior of the oven (1) is provided with a temperature sensor I. The top of the oven (1) is provided with an air outlet (6). The air outlet (6) is connected to the inlet of the condenser (2). The air outlet (6) is provided with a humidity sensor, a pH sensor (13) and a fan (5). The interior of the condenser (2) is provided with a temperature sensor II. The outlet of the condenser (2) is connected to the inlet of the oil-water collector (3). The interior of the oil-water collector (3) is provided with an oil-water interface. The oil-water collector (3) is provided with an outlet on the side and the bottom respectively, and the outlet of the oil-water collector (3) is provided with an electric valve I respectively. The outlet (11) on the side of the oil-water collector is connected to the inlet of the turmeric oil collection box (4). The internal materials of the oven (1), the condenser (2), the oil-water collector (3), the turmeric oil collection box (4) and the connecting pipe are all opaque polymer materials. The temperature sensor I, the temperature sensor II, the humidity sensor, the oil-water interface sensor (10), the pH sensor (13), the fan (5), the heating device and the electric valve I are respectively connected to the controller signal.

2. The device for recovering volatilized turmeric oil during drying according to claim 1, characterized in that: The heating device at the bottom of the oven (1) is a heating furnace (7); the oven (1) and the heating furnace (7) are connected to each other; and a drawer (8) for containing turmeric is provided between the oven (1) and the heating furnace (7).

3. The device for recovering volatilized turmeric oil during drying according to claim 2, characterized in that: The drawer (8) comprises a shell and a grid-shaped drawer (8) plate. The top and bottom of the shell are respectively connected to the oven (1) and the heating furnace (7). The top and bottom of the shell are provided with openings communicating with the oven (1) and the heating furnace (7). The grid-shaped drawer (8) plate is connected to the shell via a sliding connection assembly.

4. The device for recovering volatilized turmeric oil during drying according to claim 3, characterized in that: The sliding connection assembly comprises guide rails on the inner walls of both sides of the shell and sliding blocks which are arranged on both sides of the grid-shaped drawer (8) plate and are slidably matched with the guide rails.

5. The device for recovering volatilized turmeric oil during drying according to claim 1, characterized in that: The air outlet (6) at the top of the oven (1) passes through a vertical pipe (9); one side of the top of the vertical pipe (9) is connected to a fan (5); the other side of the vertical pipe (9) is connected to a condenser (2); and the humidity sensor is arranged at the top of the vertical pipe (9).

6. The device for recovering volatilized turmeric oil during drying according to claim 1, characterized in that: The condenser (2) comprises a condenser tube, the outer casing of the condenser tube is provided with a jacket, the bottom of the jacket close to the condenser tube outlet is provided with a coolant inlet, the top of the jacket close to the condenser tube inlet is provided with a coolant outlet, the temperature sensor II is arranged in the condenser tube, the coolant inlet is provided with a flow meter and an electric valve II, and the flow meter and the electric valve II are respectively connected to the controller signal.

7. The device for recovering volatilized turmeric oil during drying according to claim 6, characterized in that: The cross-sectional area ratio of the condenser to the jacket is 2:

3.

8. The device for recovering volatilized turmeric oil during drying according to claim 1, characterized in that: A pH sensor (13) is also provided in the oil-water collector (3), and the pH sensor (13) is connected to the controller signal.

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