Low-temperature ultrasonic counter-current extraction device for houttuynia cordata

Abstract

The utility model discloses a low-temperature ultrasonic counter-current extraction device for houttuynia cordata, which comprises an ultrasonic generator, a feeding unit, a low-temperature control unit, a counter-current extraction unit, a solvent circulating unit, a collecting unit and a control system, the feeding unit, the low-temperature control unit, the solvent circulating unit and the collecting unit are respectively connected with the counter-current extraction unit, and the control system is respectively and electrically connected with the ultrasonic generator, the feeding unit, the low-temperature control unit, the counter-current extraction unit, the solvent circulating unit and the collecting unit. By adopting a low-temperature ultrasonic countercurrent mode, the extraction device disclosed by the utility model not only can effectively prevent loss of heat-sensitive components, but also can reduce dissolution of ineffective components and realize high-efficiency and continuous countercurrent extraction operation, so that the extraction efficiency is improved, the production cost is reduced, batch extraction can be realized, and the extraction device is simple in overall structure, reasonable in design and low in cost. The popularization and use are worthy.

Description

Technical Field

[0001] The utility model relates to the technical field of houttuynia cordata extraction devices, and more specifically to a low-temperature ultrasonic countercurrent extraction device for houttuynia cordata. Background Art

[0002] Houttuynia cordata, also known as heartleaf houttuynia herb, fish-scale herb, and stinking herb, is a plant of the genus Houttuynia in the Saururaceae family. It gets its name because its stems and leaves have a fishy smell when crushed. The stems of houttuynia cordata are flat and cylindrical, twisted, with a brown-yellow surface, several longitudinal ridges, obvious nodes, and remaining fibrous roots at the lower nodes; they are brittle and easy to break. Its leaves are alternate, with the leaf blades curled and wrinkled. When flattened, they are heart-shaped, with a gradually pointed apex and entire margins; the upper surface is dark yellow-green to dark brown, and the lower surface is gray-green or gray-brown; the petioles are slender, and the base is united with the stipules to form a sheath-like shape; the spike inflorescence is terminal and yellow-brown. It often grows beside ditches, streams, on the edges of fields, on shady slopes, and in wet grasslands. It is harvested in summer and autumn every year when the stems and leaves are lush and the flower spikes are numerous. After removing impurities and remaining roots, it is washed, dried in the sun, or used fresh. It is mainly produced in provinces south of the Yangtze River in China.

[0003] Houttuynia cordata contains protein, crude fat, soluble sugar, ash, dietary fiber, carotene, vitamin C, and minerals such as calcium, phosphorus, and potassium. It has the effect of clearing heat and detoxifying, and is especially suitable for respiratory diseases. It also has good anti-radiation and anti-air pollution effects. Houttuynia cordata is cold in nature, and it is best not to be eaten by those with weak spleen and stomach and those suffering from wind-cold colds.

[0004] Research and practice have shown that decanoyl acetaldehyde in houttuynia cordata can play an auxiliary therapeutic role for hemorrhoid patients. Decanoyl acetaldehyde is the main antibacterial component in houttuynia cordata and has a certain inhibitory effect on drug-resistant Staphylococcus aureus. Currently, in existing experimental processes, steam distillation is mainly used to extract decanoyl acetaldehyde from houttuynia cordata. After distilling, cooling, and separating houttuynia cordata using a steam generator, a distiller, a condenser, etc., the finished product of decanoyl acetaldehyde is obtained. The existing extraction methods have defects such as poor product quality or poor separation effect of active ingredients. Therefore, in order to protect heat-sensitive components, reduce the dissolution of ineffective components, improve the extraction efficiency, and reduce production costs, it is necessary to find a better separation technology and adopt the low-temperature ultrasonic countercurrent extraction method to extract decanoyl acetaldehyde from houttuynia cordata. This can not only achieve automated production but also obtain a large amount of houttuynia cordata extract, which is very necessary for providing more research samples and reference substances for in-depth research on the uses of houttuynia cordata. Summary of the Utility Model

[0005] The technical problem to be solved by the present utility model is to provide an extraction device with convenient operation in view of the problems existing in the background technology. By using this extraction device and adopting the low-temperature ultrasonic countercurrent method, not only can the loss of thermosensitive components be effectively protected, but also the dissolution of ineffective components can be reduced, realizing efficient and continuous countercurrent extraction operation, thereby improving the extraction efficiency and reducing the production cost. Specifically, it is a low-temperature ultrasonic countercurrent extraction device for Houttuynia cordata Thunb.

[0006] To solve the above technical problems, the technical solution adopted by the present utility model is as follows: A low-temperature ultrasonic countercurrent extraction device for Houttuynia cordata Thunb. includes an ultrasonic generator, a feeding unit, a low-temperature control unit, a countercurrent extraction unit, a solvent circulation unit, a collection unit and a control system. The ultrasonic generator is arranged in the countercurrent extraction unit and is used to apply ultrasonic waves to the materials in the countercurrent extraction unit. The feeding unit is connected to the countercurrent extraction unit and is used to provide materials to the countercurrent extraction unit. The low-temperature control unit is connected to the countercurrent extraction unit and is used to provide a stable low-temperature extraction environment to the countercurrent extraction unit. The solvent circulation unit is connected to the countercurrent extraction unit and is used to provide extraction solvent to the countercurrent extraction unit and recycle the extraction solvent. The collection unit is connected to the countercurrent extraction unit and is used to collect the Houttuynia cordata Thunb. extraction liquid and the residue after extraction. The control system is electrically connected to the ultrasonic generator, the feeding unit, the low-temperature control unit, the countercurrent extraction unit, the solvent circulation unit and the collection unit respectively and is used to control the working states of the ultrasonic generator, the feeding unit, the low-temperature control unit, the countercurrent extraction unit, the solvent circulation unit and the collection unit.

[0007] Further, for the low-temperature ultrasonic countercurrent extraction device for Houttuynia cordata Thunb. of the present utility model, the countercurrent extraction unit includes an extraction cylinder and a driving mechanism for driving the extraction cylinder to rotate. A spiral blade or a screw propeller is arranged in the extraction cylinder. The extraction cylinder includes a material inlet, a material outlet and a residue outlet, as well as a solvent inlet and a solvent outlet. Among them, the material inlet and the solvent outlet are respectively arranged at the top or the upper side surface of the extraction cylinder, while the material outlet, the residue outlet and the solvent inlet are arranged at the bottom or the lower side surface of the extraction cylinder. The feeding unit is connected to the extraction cylinder through the material inlet. The collection unit is connected to the extraction cylinder through the material outlet and the residue outlet. The solvent circulation unit is connected to the extraction cylinder through the solvent inlet and the solvent outlet. A countercurrent is formed between the material input from the material inlet and the solvent input from the solvent inlet. The low-temperature control unit is connected to the extraction cylinder. A plurality of ultrasonic generators are arranged in the extraction cylinder. The driving mechanism and the screw propeller are respectively electrically connected to the control system.

[0008] Further, a low-temperature ultrasonic countercurrent extraction device for Houttuynia cordata Thunb. described in the present utility model is adopted. A number of filter holes are distributed on the spiral blades in the extraction cylinder or on the spiral blades of the screw propeller. The ultrasonic generator is a frequency-adjustable ultrasonic generator, and multiple ultrasonic generators are uniformly arranged on the inner wall of the extraction cylinder along the length direction of the extraction cylinder.

[0009] Further, a low-temperature ultrasonic countercurrent extraction device for Houttuynia cordata Thunb. described in the present utility model is adopted. The feeding unit includes a pulverizer. The discharge port of the pulverizer is connected to the material inlet in the extraction cylinder through a pipeline, and a control valve is installed on the pipeline communicating with the discharge port of the pulverizer. The pulverizer and the control valve are respectively electrically connected to the control system.

[0010] Further, a low-temperature ultrasonic countercurrent extraction device for Houttuynia cordata Thunb. described in the present utility model is adopted. The low-temperature control unit includes a refrigeration unit, a cooling water pump, a cooling pipeline and a temperature sensor. The cooling pipeline is arranged in a spiral shape on the inner wall of the extraction cylinder. The inlet end of the cooling pipeline is connected to the refrigeration unit through the cooling water pump, and its outlet end is connected to the refrigeration unit through a pipeline. A control valve is installed on the pipeline communicating with the outlet end of the cooling pipeline. A number of temperature sensors are provided, and multiple temperature sensors are uniformly arranged on the inner wall of the extraction cylinder. The refrigeration unit, the temperature sensor, the cooling water pump and the control valve are respectively electrically connected to the control system.

[0011] Further, a low-temperature ultrasonic countercurrent extraction device for Houttuynia cordata Thunb. described in the present utility model is adopted. The solvent circulation unit includes a liquid storage tank, a recovery tank, a filter and a solvent pump. The filter is connected to the liquid storage tank through the solvent pump. The discharge port of the filter is connected to the solvent inlet in the extraction cylinder through a pipeline, and the recovery tank is connected to the solvent outlet in the extraction cylinder through a pipeline. The liquid storage tank and the recovery tank are connected through a pipeline, and control valves are respectively installed on the pipelines communicating with the recovery tank and the filter. The solvent pump and the control valve are respectively electrically connected to the control system.

[0012] Further, a low-temperature ultrasonic countercurrent extraction device for Houttuynia cordata Thunb. described in the present utility model is adopted. The collection unit includes an extraction liquid collection tank and a material collection tank. The extraction liquid collection tank is connected to the material outlet in the extraction cylinder through a pipeline, and the material collection tank is connected to the residue outlet in the extraction cylinder through a pipeline. Control valves are respectively installed on the pipelines communicating with the extraction liquid collection tank and the material collection tank. The control valve is electrically connected to the control system.

[0013] Furthermore, a low-temperature ultrasonic countercurrent extraction device for Houttuynia cordata Thunb. described in the present utility model is adopted. The collection unit further includes a centrifuge and a membrane filter. The centrifuge and the membrane filter are connected in series to a pipeline connected to the extraction liquid collection tank. Among them, the feed end of the centrifuge is connected to the material outlet in the extraction cylinder through a pipeline, and its discharge end is connected to the feed end of the membrane filter through a pipeline. The discharge end of the membrane filter is connected to the extraction liquid collection tank through a pipeline. The centrifuge is electrically connected to the control system.

[0014] Furthermore, a low-temperature ultrasonic countercurrent extraction device for Houttuynia cordata Thunb. described in the present utility model is adopted. The control system includes a PLC controller and a touch display operation screen. The PLC controller and the touch display operation screen are electrically connected. The control system is electrically connected to the ultrasonic generator, the feeding unit, the low-temperature control unit, the countercurrent extraction unit, the solvent circulation unit, and the collection unit through the PLC controller respectively.

[0015] When a low-temperature ultrasonic countercurrent extraction device for Houttuynia cordata Thunb. described in the present utility model is adopted, in the feeding unit, through the configured crusher, the raw materials can be crushed and then sent into the extraction cylinder, which can make the raw materials fully contact with the solvent and improve the extraction effect. In the low-temperature control unit, through the configured refrigeration unit, a low-temperature environment suitable for extraction is provided for the extraction cylinder to avoid the loss of thermosensitive components. At the same time, since an ultrasonic generator is provided in the extraction cylinder to convert ultrasonic signals into mechanical vibrations, the active substances in Houttuynia cordata Thunb. can be fully dissolved in the extraction liquid, thereby improving the extraction effect. The Houttuynia cordata Thunb. extraction liquid after extraction is collected from the material outlet to the extraction liquid collection tank, and the residue after extraction is finally collected to the material collection tank through the residue outlet, while the solvent that has not dissolved the active substances is recycled after being recovered through the solvent outlet.

[0016] It can be seen from this that by adopting the extraction device described in the present utility model, under the action of the control system, automatic control can be realized, and the low-temperature ultrasonic countercurrent method can be adopted, which can not only effectively protect the loss of thermosensitive components, but also reduce the dissolution of ineffective components, realize efficient and continuous countercurrent extraction operation, thereby improving the extraction efficiency and reducing the production cost. It can not only meet the experimental extraction requirements, but also realize industrial large-scale production. It has strong practicability, simple overall structure, and reasonable design, and is worthy of popularization and use. Description of the Drawings

[0017] The present utility model will be further described in detail below with reference to the drawings.

[0018] Figure 1 is a schematic structural diagram of the present utility model;

[0019] Figure 2 is a schematic circuit and electrical control structure block diagram of the control system described in the present utility model.

[0020] As shown in the figure: 1 - ultrasonic generator, 2 - feeding unit, 3 - low - temperature control unit, 31 - refrigeration unit, 32 - cooling water pump, 33 - cooling pipeline, 34 - temperature sensor, 4 - counter - current extraction unit, 41 - extraction cylinder, 42 - driving mechanism, 5 - solvent circulation unit, 51 - liquid storage tank, 52 - recovery tank, 53 - filter, 54 - solvent pump, 6 - collection unit, 61 - extract collection tank, 62 - material collection tank, 63 - centrifuge, 64 - membrane filter, 7 - control system, 71 - PLC controller, 72 - touch display operation screen. Specific implementation mode

[0021] The following specific embodiments illustrate the implementation mode of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

[0022] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the limiting conditions for the implementation of the present utility model. Therefore, they do not have substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model. At the same time, the terms such as "upper", "lower", "left", "right" cited in this specification are only for the convenience of narration and are not used to limit the scope for the implementation of the present utility model. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope in which the present utility model can be implemented.

[0023] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connection" and "provided with" 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 directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0024] It should be noted that the term "including" or any other variant is intended to cover non - exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent in such a process, method, article or device. Embodiment 1

[0025] Such as Figure 1 And Figure 2As shown in the figure, a low-temperature ultrasonic countercurrent extraction device for Houttuynia cordata Thunb. described in this embodiment includes an ultrasonic generator 1, a feeding unit 2, a low-temperature control unit 3, a countercurrent extraction unit 4, a solvent circulation unit 5, a collection unit 6, and a control system 7. The ultrasonic generator 1 is disposed in the countercurrent extraction unit 4 and is used to apply ultrasonic waves to the materials in the countercurrent extraction unit 4. The feeding unit 2 is connected to the countercurrent extraction unit 4 and is used to supply materials to the countercurrent extraction unit 4. The low-temperature control unit 3 is connected to the countercurrent extraction unit 4 and is used to provide a stable low-temperature extraction environment for the countercurrent extraction unit 4. The solvent circulation unit 5 is connected to the countercurrent extraction unit 4 and is used to supply extraction solvent to the countercurrent extraction unit 4 and recover the extraction solvent. The collection unit 6 is connected to the countercurrent extraction unit 4 and is used to collect the Houttuynia cordata Thunb. extraction liquid after extraction and the residue after extraction. The control system 7 includes a PLC controller 71 and a touch display operation screen 72. The PLC controller 71 and the touch display operation screen 72 are electrically connected. The control system 7 is electrically connected to the ultrasonic generator 1, the feeding unit 2, the low-temperature control unit 3, the countercurrent extraction unit 4, the solvent circulation unit 5, and the collection unit 6 through the PLC controller 71, and is used to control the working states of the ultrasonic generator 1, the feeding unit 2, the low-temperature control unit 3, the countercurrent extraction unit 4, the solvent circulation unit 5, and the collection unit 6 through the PLC controller 71.

[0026] Furthermore, for a low-temperature ultrasonic countercurrent extraction device for Houttuynia cordata Thunb. described in this embodiment, the countercurrent extraction unit 4 includes an extraction cylinder 41 and a driving mechanism 42 for driving the extraction cylinder 41 to rotate. A spiral blade is provided in the extraction cylinder 41. The extraction cylinder 41 includes a material inlet, a material outlet, a residue outlet, a solvent inlet, and a solvent outlet. Among them, the material inlet and the solvent outlet are respectively disposed at the top or upper side of the extraction cylinder 41, while the material outlet, the residue outlet, and the solvent inlet are disposed at the bottom or lower side of the extraction cylinder 41. The feeding unit 2 is connected to the extraction cylinder 41 through the material inlet. The collection unit 6 is connected to the extraction cylinder 41 through the material outlet and the residue outlet. The solvent circulation unit 5 is connected to the extraction cylinder 41 through the solvent inlet and the solvent outlet. A countercurrent is formed between the materials input from the material inlet and the solvent input from the solvent inlet. The low-temperature control unit 3 is connected to the extraction cylinder 41. A plurality of ultrasonic generators 1 are provided in the extraction cylinder 41. The driving mechanism 42 is electrically connected to the control system 7.

[0027] Furthermore, for a low-temperature ultrasonic countercurrent extraction device for Houttuynia cordata Thunb. described in this embodiment, a number of filter holes are uniformly distributed on the spiral blades in the extraction cylinder 41. The ultrasonic generator 1 is a frequency-adjustable ultrasonic generator, and a plurality of ultrasonic generators 1 are uniformly arranged on the inner wall of the extraction cylinder 41 along the length direction of the extraction cylinder 41.

[0028] Furthermore, a low-temperature ultrasonic countercurrent extraction device for Houttuynia cordata Thunb. described in this embodiment is adopted. The feeding unit 2 includes a pulverizer 21. The discharge port of the pulverizer 21 is connected to the material inlet in the extraction cylinder 41 through a pipeline, and a control valve is installed on the pipeline communicating with the discharge port of the pulverizer 21. The pulverizer 21 and the control valve are respectively electrically connected to the control system 7.

[0029] Furthermore, a low-temperature ultrasonic countercurrent extraction device for Houttuynia cordata Thunb. described in this embodiment is adopted. The low-temperature control unit 3 includes a refrigeration unit 31, a cooling water pump 32, a cooling pipeline 33 and a temperature sensor 34. The cooling pipeline 33 is arranged in a spiral shape on the inner wall of the extraction cylinder 41. The inlet end of the cooling pipeline 33 is connected to the refrigeration unit 31 through the cooling water pump 32, and its outlet end is connected to the refrigeration unit 31 through a pipeline. A control valve is installed on the pipeline communicating with the outlet end of the cooling pipeline 33. A plurality of temperature sensors 34 are provided, and the plurality of temperature sensors 34 are evenly arranged on the inner wall of the extraction cylinder 41. The refrigeration unit 31, the temperature sensor 34, the cooling water pump 32 and the control valve are respectively electrically connected to the control system 7.

[0030] Furthermore, a low-temperature ultrasonic countercurrent extraction device for Houttuynia cordata Thunb. described in this embodiment is adopted. The solvent circulation unit 5 includes a liquid storage tank 51, a recovery tank 52, a filter 53 and a solvent pump 54. The filter 53 is connected to the liquid storage tank 51 through the solvent pump 54. The discharge port of the filter 53 is connected to the solvent inlet in the extraction cylinder 41 through a pipeline, and the recovery tank 52 is connected to the solvent outlet in the extraction cylinder 41 through a pipeline. The liquid storage tank 51 and the recovery tank 52 are connected through a pipeline, and control valves are respectively installed on the pipelines communicating with the recovery tank 52 and the filter 53. The solvent pump 54 and the control valve are respectively electrically connected to the control system 7.

[0031] Furthermore, a low-temperature ultrasonic countercurrent extraction device for Houttuynia cordata Thunb. described in this embodiment is adopted. The collection unit 6 includes an extract collection tank 61 and a material collection tank 62. The extract collection tank 61 is connected to the material outlet in the extraction cylinder 41 through a pipeline, and the material collection tank 62 is connected to the residue outlet in the extraction cylinder 41 through a pipeline. Control valves are respectively installed on the pipelines communicating with the extract collection tank 61 and the material collection tank 62. The control valve is electrically connected to the control system 7. Example 2

[0032] The difference between this embodiment and Embodiment 1 lies in that a screw propeller is provided in the extraction cylinder 41, and the screw propeller is electrically connected to the control system 7 respectively; at the same time, a number of filter holes are distributed on the screw blades of the screw propeller. By using the configured screw propeller, the problem of blockage of the materials in the extraction cylinder 41 can be avoided. Embodiment 3

[0033] On the basis of Embodiment 1, in order to remove solid particles and macromolecular impurities in the extract and improve the purity and quality of the extracted houttuynia cordata extract, the collection unit 6 further includes a centrifuge 63 and a membrane filter 64. The centrifuge 63 and the membrane filter 64 are connected in series on the pipeline connected to the extract collection tank 61. Among them, the feed end of the centrifuge 63 is connected to the material outlet in the extraction cylinder 41 through a pipeline, and its discharge end is connected to the feed end of the membrane filter 64 through a pipeline. The discharge end of the membrane filter 64 is connected to the extract collection tank 61 through a pipeline. The centrifuge 63 is electrically connected to the control system 7. Through the configured centrifuge 63 and membrane filter 64, the houttuynia cordata extract discharged from the material outlet can be preliminarily purified.

[0034] When using the extraction device of the present utility model in the specific application process, its operation process is as follows: First, add the houttuynia cordata materials into the pulverizer 21 in the feeding unit 2, first use the pulverizer 21 for pulverization, and then add them into the extraction cylinder 41. At the same time, start the refrigeration unit 31 in the low-temperature control unit 3, and send the coolant into the cooling pipeline 33 through the cooling water pump 32 to adjust the temperature in the extraction cylinder 41 to the set value. Then start the ultrasonic generator 1, and apply ultrasonic waves to the materials through the transducer array in the ultrasonic generator 1 and convert the ultrasonic signal into mechanical vibration. When starting the ultrasonic generator 1, at the same time, it is necessary to start the solvent pump 54 in the solvent circulation unit 5, pump the solvent out of the liquid storage tank 51, filter it through the filter 53 and then send it into the extraction cylinder 41 to form a countercurrent. The materials are in full contact with the countercurrent solvent in the extraction cylinder 41, so that the active substances in the houttuynia cordata can be fully dissolved in the extract, and the effective components are extracted. Thereby improving the extraction effect. The extracted houttuynia cordata extract is collected from the material outlet into the extract collection tank 61 and can be further purified. After the extraction is completed, turn off all equipment, discharge the material residue, and clean the extraction cylinder 41 and related components. In the actual operation process, the ultrasonic power and frequency can be adjusted according to the actual situation, and the temperature and other parameters in the extraction cylinder 41 can be controlled to obtain the best extraction effect.

[0035] When using the extraction device of the present utility model, the crusher 21 in the feeding unit 2, the refrigeration unit 31, the cooling water pump 32 and the temperature sensor 34 in the low-temperature control unit 3, the driving mechanism 42 in the countercurrent extraction unit 4, the solvent pump 54 in the solvent circulation unit 5, the centrifuge 63 and the membrane filter 64 in the collection unit 6, the PLC controller 71 and the touch display operation screen 72 in the control system 7, as well as the configured control valves and the screw propeller installed in the extraction cylinder 41, are all common devices in the prior art, without any modification to their specific structures. Applying them to the present utility model aims to achieve automatic control and realize ultrasonic countercurrent extraction under low-temperature conditions. Therefore, no detailed description of the equipment models used is provided, as long as they meet the usage requirements.

[0036] In summary, when using the extraction device of the present utility model, under the action of the control system 7, automatic control can be achieved, and the low-temperature ultrasonic countercurrent method can be adopted. This can not only effectively protect the loss of heat-sensitive components but also reduce the dissolution of ineffective components, realizing efficient and continuous countercurrent extraction operations, thereby improving the extraction efficiency and reducing the production cost. It can not only meet the experimental extraction requirements but also realize industrial large-scale production. It has strong practicability, a simple overall structure, and a reasonable design, and is worthy of popularization and use.

[0037] Other details not elaborated in the present utility model are all well-known conventional technologies in the art.

[0038] The protection scope of the present utility model is not limited to the technical solutions disclosed in the specific embodiments. The above is only the preferred embodiment of the present utility model and does not limit the present utility model. Any minor modification, equivalent replacement, and improvement made based on the technical solution of the present utility model should be included in the protection scope of the technical solution of the present utility model.

Claims

1. A low-temperature ultrasonic countercurrent extraction device for Houttuynia cordata, characterized in that: It includes an ultrasonic generator (1), a feeding unit (2), a low-temperature control unit (3), a countercurrent extraction unit (4), a solvent circulation unit (5), a collection unit (6) and a control system (7). The ultrasonic generator (1) is arranged in the countercurrent extraction unit (4) and is used to apply ultrasonic waves to the materials in the countercurrent extraction unit (4); the feeding unit (2) is connected to the countercurrent extraction unit (4) and is used to provide materials to the countercurrent extraction unit (4); the low-temperature control unit (3) is connected to the countercurrent extraction unit (4) and is used to provide a stable low-temperature extraction environment to the countercurrent extraction unit (4); the solvent circulation unit (5) is connected to the countercurrent extraction unit (4) and is used to provide extraction solvent to the countercurrent extraction unit (4) and recover the extraction solvent; the collection unit (6) is connected to the countercurrent extraction unit (4) and is used to collect the extracted houttuynia cordata extraction liquid and the residue after extraction; the control system (7) is electrically connected to the ultrasonic generator (1), the feeding unit (2), the low-temperature control unit (3), the countercurrent extraction unit (4), the solvent circulation unit (5) and the collection unit (6) respectively, and is used to control the working states of the ultrasonic generator (1), the feeding unit (2), the low-temperature control unit (3), the countercurrent extraction unit (4), the solvent circulation unit (5) and the collection unit (6).

2. The low-temperature ultrasonic countercurrent extraction device for Houttuynia cordata according to claim 1, characterized in that: The countercurrent extraction unit (4) includes an extraction cylinder (41) and a driving mechanism (42) for driving the extraction cylinder (41) to rotate. A spiral blade or a screw propeller is arranged in the extraction cylinder (41). The extraction cylinder (41) includes a material inlet, a material outlet and a residue outlet, as well as a solvent inlet and a solvent outlet. Among them, the material inlet and the solvent outlet are respectively arranged at the top or the upper side surface of the extraction cylinder (41), while the material outlet, the residue outlet and the solvent inlet are arranged at the bottom or the lower side surface of the extraction cylinder (41); the feeding unit (2) is connected to the extraction cylinder (41) through the material inlet, the collection unit (6) is connected to the extraction cylinder (41) through the material outlet and the residue outlet, and the solvent circulation unit (5) is connected to the extraction cylinder (41) through the solvent inlet and the solvent outlet, and a countercurrent is formed between the materials input from the material inlet and the solvent input from the solvent inlet; the low-temperature control unit (3) is connected to the extraction cylinder (41); a plurality of ultrasonic generators (1) are arranged in the extraction cylinder (41); the driving mechanism (42) and the screw propeller are respectively electrically connected to the control system (7).

3. The low-temperature ultrasonic countercurrent extraction device for Houttuynia cordata Thunb. according to claim 2, characterized in that: A number of filter holes are distributed on the spiral blades in the extraction cylinder (41) or on the spiral blades of the screw propeller; the ultrasonic generator (1) is a frequency-adjustable ultrasonic generator, and a plurality of ultrasonic generators (1) are uniformly arranged on the inner wall of the extraction cylinder (41) along the length direction of the extraction cylinder (41).

4. The low-temperature ultrasonic countercurrent extraction device for houttuynia cordata according to claim 2, characterized in that: The feeding unit (2) includes a crusher (21). The discharge port of the crusher (21) is connected to the material inlet in the extraction cylinder (41) through a pipeline, and a control valve is installed on the pipeline communicating with the discharge port of the crusher (21). The crusher (21) and the control valve are respectively electrically connected to the control system (7).

5. The low-temperature ultrasonic countercurrent extraction device for Houttuynia cordata Thunb. according to claim 2, characterized in that: The low-temperature control unit (3) includes a refrigeration unit (31), a cooling water pump (32), a cooling pipeline (33), and a temperature sensor (34). The cooling pipeline (33) is arranged in a spiral shape on the inner wall of the extraction cylinder (41). The inlet end of the cooling pipeline (33) is connected to the refrigeration unit (31) through the cooling water pump (32), and its outlet end is connected to the refrigeration unit (31) through a pipeline. A control valve is installed on the pipeline communicating with the outlet end of the cooling pipeline (33). A plurality of temperature sensors (34) are provided, and the plurality of temperature sensors (34) are evenly arranged on the inner wall of the extraction cylinder (41). The refrigeration unit (31), the temperature sensor (34), the cooling water pump (32), and the control valve are respectively electrically connected to the control system (7).

6. The low-temperature ultrasonic countercurrent extraction device for Houttuynia cordata according to claim 2, characterized in that: The solvent circulation unit (5) includes a liquid storage tank (51), a recovery tank (52), a filter (53), and a solvent pump (54). The filter (53) is connected to the liquid storage tank (51) through the solvent pump (54). The discharge port of the filter (53) is connected to the solvent inlet in the extraction cylinder (41) through a pipeline, and the recovery tank (52) is connected to the solvent outlet in the extraction cylinder (41) through a pipeline. The liquid storage tank (51) and the recovery tank (52) are connected through a pipeline, and control valves are respectively installed on the pipelines communicating with the recovery tank (52) and the filter (53). The solvent pump (54) and the control valve are respectively electrically connected to the control system (7).

7. The low-temperature ultrasonic countercurrent extraction device for Houttuynia cordata according to claim 2, wherein: The collection unit (6) includes an extract collection tank (61) and a material collection tank (62). The extract collection tank (61) is connected to the material outlet in the extraction cylinder (41) through a pipeline, and the material collection tank (62) is connected to the residue outlet in the extraction cylinder (41) through a pipeline. Control valves are respectively installed on the pipelines communicating with the extract collection tank (61) and the material collection tank (62). The control valve is electrically connected to the control system (7).

8. The low-temperature ultrasonic countercurrent extraction device for Houttuynia cordata according to claim 7, wherein: The collection unit (6) further includes a centrifuge (63) and a membrane filter (64). The centrifuge (63) and the membrane filter (64) are connected in series on the pipeline connected to the extract collection tank (61). Among them, the feed end of the centrifuge (63) is connected to the material outlet in the extraction cylinder (41) through a pipeline, and its discharge end is connected to the feed end of the membrane filter (64) through a pipeline. The discharge end of the membrane filter (64) is connected to the extract collection tank (61) through a pipeline. The centrifuge (63) is electrically connected to the control system (7).

9. A low-temperature ultrasonic countercurrent extraction device for Houttuynia cordata Thunb. according to any one of claims 1 to 8, characterized in that: The control system (7) includes a PLC controller (71) and a touch display operation screen (72). The PLC controller (71) and the touch display operation screen (72) are electrically connected. The control system (7) is electrically connected to the ultrasonic generator (1), the feeding unit (2), the low-temperature control unit (3), the countercurrent extraction unit (4), the solvent circulation unit (5), and the collection unit (6) respectively through the PLC controller (71).

Images