Supercritical extraction equipment with temperature control system

Abstract

The invention relates to supercritical extraction equipment with a temperature control system, which is applied to the technical field of supercritical extraction and comprises an extraction tank body, a water bath temperature control tank, a groove, a warm flow pipe, a guide sail piece, a rotary stirring blade module, a rotating shaft, a stirring rod and a magnetic suction transmission module, according to the water bath temperature control tank, warm water is disturbed by the rotary stirring blade module to do vortex motion, the warm water directly enters the extraction tank body through the warm flow pipe, and then the warm water returns to the water bath temperature control tank again, so that direct temperature control on an extraction material in the extraction tank body is realized; the temperature control adjusting effect of the water bath temperature control tank on the extraction tank body is effectively improved, the rotary stirring blade module achieves rotation of a rotary shaft in the extraction tank body through magnetic attraction transmission of the magnetic attraction transmission module, extraction materials between warm flow pipes are stirred through stirring rods, and the extraction effect of the extraction tank body is further effectively improved.

Description

Technical Field

[0001] The present invention relates to a supercritical extraction device, in particular to a supercritical extraction device with a temperature control system applied in the technical field of supercritical extraction. Background Art

[0002] Supercritical extraction (SCE) is a technique that uses supercritical fluid as the extraction medium to separate the different components in a mixture. SCE equipment primarily consists of an extraction kettle, separator, CO2 storage tank, heat exchanger, and distillation column, with the extraction kettle being the core component. Supercritical fluid refers to a fluid state above its critical temperature and pressure. Its unique solubility and diffusion properties make it an effective medium in the extraction process. SCE is the optimal method for extracting active ingredients in plants.

[0003] Chinese invention patent CN219167758U discloses a "continuous supercritical extraction system." Through a combination of various structures, this extraction system allows for feeding without affecting the pressure and temperature within the extraction kettle, enabling continuous supercritical extraction of herbs and seeds. Furthermore, this extraction system can precisely control the pressure and temperature within the extraction kettle during use, preventing deviations in temperature and pressure within the extraction kettle from reducing the quality of the herbal or seed extraction. Chinese invention patent CN111234924B discloses a "variable volume supercritical extraction kettle and method of use." A temperature-control layer is disposed on the exterior of the kettle, forming a kettle cavity within the kettle. The temperature-control layer is a water bath layer with a water inlet and outlet. The temperature is controlled by heating the kettle cavity in a water bath.

[0004] There are two ways to control the temperature of supercritical extraction equipment. One is to directly heat the extraction equipment with an electric heating device, and the other is to indirectly heat the extraction equipment with a water bath. The water bath temperature control is relatively gentler, but the warm water used for water bath temperature control can only act on the outermost layer of the extraction equipment, which has insufficient heat transfer effect on the extraction materials in the extraction equipment, and the temperature control effect inside the extraction equipment is even more unsatisfactory. Summary of the Invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the warm water used for water bath temperature control can only act on the outermost layer of the extraction equipment, and the heat transfer effect on the extraction material in the extraction equipment is insufficient, and the temperature control and regulation effect in the extraction equipment is even more unsatisfactory.

[0006] To solve the above problems, the present invention provides a supercritical extraction device with a temperature control system, comprising an extraction tank body, a water bath temperature control tank sleeved at the bottom of the extraction tank body, an electric heating coil module fixedly embedded on the inner wall of the water bath temperature control tank, and a temperature controller module fixedly connected to the outside of the water bath temperature control tank;

[0007] The outer surface of the extraction tank body is uniformly provided with vertical grooves, and the interior of the extraction tank body is uniformly fixedly connected with a warm flow tube. The warm flow tube is bent in a V shape, and one end of the warm flow tube is fixedly connected to the groove, and the other end of the warm flow tube extends through the extraction tank body. The outside of the groove is fixedly connected to a guide sail. The bottom of the water bath temperature control tank is rotatably connected to a rotating stirring blade module, and the guide sail is bent in the direction of rotation of the rotating stirring blade module.

[0008] The V-shaped tip of the warm flow tube is fixedly connected to a shaft ring, the middle part of the shaft ring is rotatably connected to a rotating shaft, the outside of the rotating shaft is fixedly connected to a stirring rod, and the stirring rod is distributed between adjacent warm flow tubes. The bottom end of the rotating shaft and the middle part of the rotating stirring blade module are fixedly connected to a magnetic transmission module, and the two sets of magnetic transmission modules are magnetically attracted to each other.

[0009] In the above-mentioned supercritical extraction equipment with a temperature control system, the water bath temperature control tank is used to adjust the extraction tank body, and the water in the water bath temperature control tank is introduced into the extraction tank body through the temperature flow tube, thereby effectively improving the temperature control effect of the water bath temperature control tank on the extraction tank body.

[0010] As a further improvement of the present application, a supercritical fluid medium pipeline module is fixedly connected to the top of the extraction tank body, and the bottom and top of the supercritical fluid medium pipeline module are respectively fixedly connected to a fluid inlet pipe and a fluid outlet pipe. The fluid inlet pipe is fixedly connected to the bottom end of the extraction tank body, and the fluid outlet pipe is fixedly connected to the top end of the extraction tank body. The supercritical fluid medium is controlled by the supercritical fluid medium pipeline module to enter the extraction tank body through the fluid inlet pipe, and the fluid outlet pipe then discharges the supercritical fluid medium out of the extraction tank body.

[0011] As a further improvement of the present application, the fluid inlet pipe is equipped with a delivery pump, and a return line is fixedly connected to the top inner wall of the extraction tank body. The return line is fixedly connected to the input end of the delivery pump. The delivery pump is used to effectively improve the delivery effect of the supercritical fluid medium in the fluid inlet pipe, and part of the supercritical fluid medium is re-sent into the fluid inlet pipe through the return line, thereby realizing the circulation of the supercritical fluid medium in the extraction tank body, effectively improving the extraction effect of the supercritical fluid medium.

[0012] As a further improvement of the present application, a bottom protection filter plate is fixedly connected to the bottom of the extraction tank body, the connection part of the fluid inlet pipe and the extraction tank body is lower than the bottom protection filter plate, the rotating shaft is rotatably connected to the middle part of the bottom protection filter plate, and a discharge port is opened on the outside of the bottom end of the extraction tank body, and the discharge port is higher than the upper surface of the bottom protection filter plate. The bottom protection filter plate is used to isolate the bottom end of the extraction tank body from the input space of the supercritical fluid medium, effectively preventing the material in the extraction tank body from blocking the fluid inlet pipe, and facilitating the material in the extraction tank body to be discharged from the extraction tank body from the discharge port.

[0013] As another improvement of the present application, a connecting port is provided on the outside of the bottom end of the water bath temperature control tank, the discharge port and the connecting port are horizontally corresponding, and a discharge pipe is inserted between the discharge port and the connecting port, and the discharge pipe and the outer end of the connecting port are connected by a flange. The discharge port and the connecting port are connected by the discharge pipe, so that the material in the extraction tank body can be directly discharged from the water bath temperature control tank, skipping the disassembly operation of the extraction tank body and the water bath temperature control tank, and effectively improving the replacement efficiency of the material inside the extraction tank body.

[0014] As another improved supplement to the present application, the discharge pipe is internally rotatably connected to a discharge shaft, and the discharge shaft is fixedly connected to the outside of one end close to the extraction tank body with a spiral blade, and the discharge shaft extends into the interior of the extraction tank body. The discharge shaft drives the spiral blade, and the spiral pushes the material in the extraction tank body to discharge, effectively improving the material discharge efficiency.

[0015] As another improved supplement to the present application, the connection part between the rotating shaft and the bottom filter plate corresponds to the discharge shaft in a U-shaped bend, and the end of the discharge shaft extending into the extraction tank body is fixedly connected to a closing cover, and the closing cover corresponds to the insertion end of the discharge pipe. The rotating shaft is set in a U-shape, which effectively increases the degree to which the discharge shaft extends into the interior of the extraction tank body, and after the discharge shaft retracts into the discharge pipe, the closing cover closes the discharge pipe, effectively improving the sealing effect of the extraction tank body.

[0016] As another improvement of the present application, the end of the discharge pipe away from the water bath temperature control tank is fixedly connected to the storage cylinder, the end of the discharge shaft away from the water bath temperature control tank extends through the storage cylinder, the outside of the storage cylinder is slidably connected to the telescopic drive module, the output end of the telescopic drive module is fixedly connected to the discharge shaft, the telescopic drive module realizes the rotation and telescopic movement of the discharge shaft, and by storing the discharge shaft into the storage cylinder, the discharge shaft is separated from the interior of the extraction tank body, and the internal space of the extraction tank body is restored.

[0017] In summary, the present invention realizes water bath temperature control and regulation of the extraction tank body through a water bath temperature control tank, and the rotating stirring blade module in the water bath temperature control tank disturbs the warm water to perform a vortex motion. The vortex motion of the warm water is guided by the guide sail, so that the warm water directly enters the extraction tank body through the warm flow tube, and the warm water subsequently returns to the water bath temperature control tank, thereby realizing direct temperature control of the extraction material in the extraction tank body. Compared with the traditional water area temperature control extraction equipment, the temperature control and regulation effect of the water bath temperature control tank on the extraction tank body is effectively improved, and the rotating stirring blade module realizes the rotation of the rotating shaft in the extraction tank body through the magnetic transmission of the magnetic transmission module, and utilizes the stirring rod to stir the extraction material between the warm flow tubes, thereby further effectively improving the extraction effect of the extraction tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional structural diagram of the first embodiment of the present application;

[0019] Figure 2This is a three-dimensional structural diagram of the extraction tank according to the first embodiment of the present application;

[0020] Figure 3 This is a sectional three-dimensional structural diagram of the first embodiment of the present application;

[0021] Figure 4 This is a cross-sectional perspective structural diagram of the extraction tank according to the first embodiment of the present application;

[0022] Figure 5 This is a top-view cross-sectional perspective structural diagram of a warm flow tube according to the first embodiment of the present application;

[0023] Figure 6 This is a sectional three-dimensional structural diagram of the discharge port and the communication port in the first embodiment of the present application;

[0024] Figure 7 This is a three-dimensional structural diagram of the communication port and the discharge pipe according to the second embodiment of the present application;

[0025] Figure 8 This is a three-dimensional structural diagram of the discharge port and the discharge pipe according to the second embodiment of the present application;

[0026] Figure 9 This is a demonstration diagram of the discharging shaft extending movement according to the second embodiment of the present application;

[0027] Figure 10 This is a demonstration diagram of the retraction movement of the discharge shaft in the second embodiment of the present application.

[0028] Description of the numbers in the figure:

[0029] 1. Extraction tank body; 101. Groove; 102. Warm flow tube; 103. Guide sail; 104. Rotating stirring blade module; 105. Shaft ring; 106. Rotating shaft; 107. Stirring rod; 108. Magnetic transmission module; 2. Water bath temperature control tank; 201. Electric heating coil module; 202. Temperature controller module; 3. Supercritical fluid medium pipeline module; 301. Fluid inlet pipe; 302. Fluid outlet pipe; 303. Delivery pump; 304. Return pipe; 4. Bottom filter plate; 401. Discharge port; 402. Connecting port; 403. Discharge pipe; 404. Discharge shaft; 405. Spiral blade; 406. Closing cover; 407. Storage cylinder; 408. Telescopic drive module. DETAILED DESCRIPTION

[0030] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0031] The first implementation method:

[0032] Figures 1 to 5FIG1 is a diagram showing a supercritical extraction device with a temperature control system, comprising an extraction tank body 1, a water bath temperature control tank 2 being sleeved on the bottom of the extraction tank body 1, an electric heating coil module 201 being fixedly embedded on the inner wall of the water bath temperature control tank 2, a temperature controller module 202 being fixedly connected to the outside of the water bath temperature control tank 2, vertical grooves 101 being uniformly opened on the outer surface of the extraction tank body 1, a warm flow tube 102 being uniformly fixedly connected to the inside of the extraction tank body 1, the warm flow tube 102 being bent in a V-shape, one end of the warm flow tube 102 being fixedly connected to the groove 101, and the other end of the warm flow tube 102 extending through the extraction tank body 1, as shown in FIG1. Figure 5 As shown in the figure, the V-shaped bending angle of the warm flow tube 102 is 60 degrees. Three groups of warm flow tubes 102 are installed on the same plane. In order to effectively improve the heat transfer capacity between the warm flow tube 102 and the extraction material, the warm flow tube 102 can be made of copper tube. The outside of the groove 101 is fixedly connected with a guide sail 103. The bottom of the water bath temperature control tank 2 is rotatably connected with a rotating blade module 104. The guide sail 103 is bent in the direction of rotation of the rotating blade module 104, so that the warm water rotating in the water bath temperature control tank 2 can be heated by the bending angle of the guide sail 103 when rushing towards the guide sail 103. The warm water is guided to be introduced into the warm flow tube 102. The V-shaped tip of the warm flow tube 102 is fixedly connected to the shaft ring 105. The middle part of the shaft ring 105 is rotatably connected to the rotating shaft 106. The outer part of the rotating shaft 106 is fixedly connected to the stirring rod 107. The stirring rod 107 is distributed between adjacent warm flow tubes 102. The bottom end of the rotating shaft 106 and the middle part of the rotating stirring blade module 104 are fixedly connected to the magnetic attraction transmission module 108. The two sets of magnetic attraction transmission modules 108 are magnetically attracted to each other and supported by permanent magnets that attract each other. The transmission of rotational force is realized by magnetic attraction.

[0033] During the extraction operation, the extraction material is put into the extraction tank body 1, and the extraction tank body 1 is vertically placed in the water bath temperature control tank 2. The water bath temperature control of the extraction tank body 1 is adjusted by the water bath temperature control tank 2. The rotating stirring blade module 104 in the water bath temperature control tank 2 rotates, disturbing the warm water in the water bath temperature control tank 2 to make a vortex motion. The vortex motion of the warm water is guided by the guide sail 103, and the warm water enters from the groove 101 end of the warm flow tube 102, so that the warm water directly enters the extraction tank body 1, and the subsequent warm water is further transferred from the warm flow tube 102 to the extraction tank body 1. The other end of the flow tube 102 returns to the water bath temperature control tank 2 to directly control the temperature of the extraction material in the extraction tank body 1, effectively improving the temperature control and regulation effect of the water bath temperature control tank 2 on the extraction tank body 1, and the rotating stirring blade module 104 realizes the rotation of the rotating shaft 106 in the extraction tank body 1 through the magnetic transmission module 108, and the stirring rod 107 is used to stir the extraction material between the warm flow tube 102, so that the extraction material is evenly heated, further effectively improving the extraction effect of the extraction tank body 1.

[0034] Figures 3 to 6 As shown, the top of the extraction tank body 1 is fixedly connected to a supercritical fluid medium pipeline module 3, and the bottom and top of the supercritical fluid medium pipeline module 3 are respectively fixedly connected to a fluid inlet pipe 301 and a fluid outlet pipe 302. The fluid inlet pipe 301 is fixedly connected to the bottom end of the extraction tank body 1, and the fluid outlet pipe 302 is fixedly connected to the top end of the extraction tank body 1. The supercritical fluid medium is controlled by the supercritical fluid medium pipeline module 3 to enter the extraction tank body 1 through the fluid inlet pipe 301, and the fluid outlet pipe 302 then discharges the supercritical fluid medium from the extraction tank body 1. The fluid inlet pipe 301 is equipped with a delivery pump 303, and the top inner wall of the extraction tank body 1 is fixedly connected to a return pipe 304, and the return pipe 304 is fixedly connected to the input end of the delivery pump 303. The delivery pump 303 is used to effectively improve the delivery effect of the supercritical fluid medium in the fluid inlet pipe 301, and the delivery pump 303 is used to effectively improve the delivery effect of the supercritical fluid medium in the fluid inlet pipe 301. Part of the supercritical fluid medium is re-sent into the fluid inlet pipe 301 through the reflux pipe 304, thereby realizing the circulation of the supercritical fluid medium in the extraction tank body 1, effectively improving the extraction effect of the supercritical fluid medium, and the connection part between the reflux pipe 304 and the delivery pump 303 also includes a control valve for controlling the flow of the reflux pipe 304. The structural position of the control valve is not detailed in this figure. The bottom of the extraction tank body 1 is fixedly connected to a bottom protection filter plate 4, and the connection part of the fluid inlet pipe 301 and the extraction tank body 1 is lower than the bottom protection filter plate 4. The rotating shaft 106 is rotatably connected to the middle part of the bottom protection filter plate 4. The aperture of the bottom protection filter plate 4 is smaller than the particle size of the extraction material, thereby preventing the extraction material from accumulating at the bottom end of the extraction tank body 1, and isolating the bottom end of the extraction tank body 1 from the input space of the supercritical fluid medium, effectively preventing the material in the extraction tank body 1 from clogging the fluid inlet pipe 301;

[0035] The supercritical fluid medium pipeline module 3 controls the supercritical fluid medium to enter the extraction tank body 1 through the fluid inlet pipe 301, and the fluid outlet pipe 302 then discharges the supercritical fluid medium from the extraction tank body 1, thereby realizing the circulation of the supercritical fluid in the extraction tank body 1. The bottom filter plate 4 isolates the bottom end of the extraction tank body 1 from the input space of the supercritical fluid medium, effectively preventing the material in the extraction tank body 1 from blocking the fluid inlet pipe 301. The delivery pump 303 equipped with the fluid inlet pipe 301 effectively improves the input efficiency of the supercritical fluid. After the supercritical fluid rises from the bottom to the top of the extraction tank body 1, part of the supercritical fluid is re-sent into the fluid inlet pipe 301 through the reflux pipe 304, thereby realizing the circulation of the supercritical fluid medium in the extraction tank body 1, thereby effectively improving the extraction effect of the supercritical fluid medium.

[0036] The second implementation method:

[0037] Compared with the first embodiment, the main new addition is a discharge pipe 403. The specific new structure is as follows, and the remaining structures are consistent with the first embodiment.

[0038] Figures 6 to 8As shown, a discharge port 401 is provided on the outside of the bottom end of the extraction tank body 1. The discharge port 401 is higher than the upper surface of the bottom protection filter plate 4 and is convenient for the material in the extraction tank body 1 to be discharged from the extraction tank body 1 through the discharge port 401. A connecting port 402 is provided on the outside of the bottom end of the water bath temperature control tank 2. The discharge port 401 and the connecting port 402 are horizontally corresponding, and a discharge pipe 403 is inserted between the discharge port 401 and the connecting port 402. The discharge pipe 403 is connected to the outer end of the connecting port 402 through a flange, and the discharge pipe 403 is used to connect the discharge port 401 and the connecting port 402. The opening 402 enables the material in the extraction tank body 1 to be directly discharged from the water bath temperature control tank 2, skipping the disassembly operation of the extraction tank body 1 and the water bath temperature control tank 2, effectively improving the efficiency of replacing the material in the extraction tank body 1. The discharge pipe 403 is internally rotatably connected to the discharge shaft 404. The discharge shaft 404 is fixedly connected to the outside of the end close to the extraction tank body 1 with a spiral blade 405. The discharge shaft 404 extends into the interior of the extraction tank body 1. The discharge shaft 404 drives the spiral blade 405, which spirally pushes the material in the extraction tank body 1 to discharge, effectively improving the material discharge efficiency.

[0039] The extracted material in the extraction tank body 1 can be discharged directly from the discharge port 401, which effectively improves the internal cleaning efficiency of the extraction tank body 1. A connecting port 402 is provided at the bottom end of the water bath temperature control tank 2, and a discharge pipe 403 is used to connect the discharge port 401 and the connecting port 402, so that the material in the extraction tank body 1 can be directly discharged from the water bath temperature control tank 2, skipping the disassembly operation of the extraction tank body 1 and the water bath temperature control tank 2. Compared with the first embodiment, the extraction tank body 1 needs to completely remove the water bath temperature control tank 2 before the extraction material inside the extraction tank body 1 can be replaced, further effectively improving the replacement efficiency of the material inside the extraction tank body 1. The discharge shaft 404 inside the discharge pipe 403 cooperates with the spiral blade 405 to realize spiral conveying of the extraction material, further effectively improving the discharge efficiency of the extraction material.

[0040] Figures 9 and 10As shown, the connection portion between the rotating shaft 106 and the bottom filter plate 4 corresponds to the discharge shaft 404 in a U-shaped bending arrangement, and the end of the discharge shaft 404 extending into the extraction tank body 1 is fixedly connected to a closing cover 406, and the closing cover 406 corresponds to the insertion end of the discharge pipe 403. The rotating shaft 106 is arranged in a U-shaped bending arrangement, which effectively increases the degree to which the discharge shaft 404 extends into the interior of the extraction tank body 1, and after the discharge shaft 404 is retracted into the discharge pipe 403, the closing cover 406 seals the discharge pipe 403, effectively improving the sealing effect of the extraction tank body 1, and the discharge pipe 403 is away from water. One end of the water bath temperature control tank 2 is fixedly connected to a storage cylinder 407, and the end of the discharge shaft 404 away from the water bath temperature control tank 2 extends through the storage cylinder 407. The outside of the storage cylinder 407 is slidably connected to a telescopic drive module 408. The output end of the telescopic drive module 408 is fixedly connected to the discharge shaft 404. The telescopic drive module 408 includes an electric push and a rotary motor to realize the rotation and telescopic movement of the discharge shaft 404. By storing the discharge shaft 404 in the storage cylinder 407, the discharge shaft 404 is separated from the interior of the extraction tank body 1, and the internal space of the extraction tank body 1 is restored;

[0041] When the extracted material in the extraction tank body 1 is discharged, the telescopic movement of the telescopic drive module 408 is used to first push the discharge shaft 404 into the interior of the extraction tank body 1. The inserted end of the discharge shaft 404 corresponds to the U-shaped curved portion of the rotating shaft 106, effectively preventing the rotating shaft 106 from blocking the discharge shaft 404, and effectively increasing the degree to which the discharge shaft 404 extends into the interior of the extraction tank body 1, thereby effectively improving the discharge efficiency of the discharge shaft 404 for the extracted material. After most of the extracted material in the extraction tank body 1 is discharged, the telescopic drive module 408 retracts the discharge shaft 404 back to the discharge pipe 403, and the storage cylinder 407 provides space for the retraction of the discharge shaft 404. The closing cover 406 on the discharge shaft 404 closes the discharge pipe 403, effectively improving the sealing effect of the extraction tank body 1, and facilitating a subsequent new round of extraction operations of the extraction tank body 1.

[0042] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A supercritical extraction device with a temperature control system, characterized in that: The invention comprises an extraction tank body (1), wherein the bottom of the extraction tank body (1) is provided with a water bath temperature control tank (2), the inner wall of the water bath temperature control tank (2) is fixedly inlaid with an electric heating coil module (201), and the outside of the water bath temperature control tank (2) is fixedly connected with a temperature controller module (202); The outer surface of the extraction tank body (1) is uniformly provided with vertical grooves (101), and the interior of the extraction tank body (1) is uniformly fixedly connected with a warm flow tube (102), the warm flow tube (102) is bent in a V-shape, and one end of the warm flow tube (102) is fixedly connected to the groove (101), and the other end of the warm flow tube (102) extends through the extraction tank body (1), and the outside of the groove (101) is fixedly connected with a guide sail (103), and the bottom of the water bath temperature control tank (2) is rotatably connected with a rotating stirring blade module (104), and the guide sail (103) is bent in the direction of rotation of the rotating stirring blade module (104); The V-shaped tip of the warm flow tube (102) is fixedly connected to a shaft ring (105), the middle of the shaft ring (105) is rotatably connected to a rotating shaft (106), the outside of the rotating shaft (106) is fixedly connected to a stirring rod (107), and the stirring rod (107) is distributed between adjacent warm flow tubes (102). The bottom end of the rotating shaft (106) and the middle of the rotating stirring blade module (104) are fixedly connected to a magnetic transmission module (108), and the two groups of magnetic transmission modules (108) are magnetically attracted to each other.

2. The supercritical extraction equipment with a temperature control system according to claim 1, characterized in that: The top of the extraction tank body (1) is fixedly connected to a supercritical fluid medium pipeline module (3), and the bottom and top of the supercritical fluid medium pipeline module (3) are respectively fixedly connected to a fluid inlet pipe (301) and a fluid outlet pipe (302), the fluid inlet pipe (301) is fixedly connected to the bottom end of the extraction tank body (1), and the fluid outlet pipe (302) is fixedly connected to the top end of the extraction tank body (1).

3. The supercritical extraction equipment with a temperature control system according to claim 2, characterized in that: The fluid inlet pipe (301) is equipped with a delivery pump (303), and the top inner wall of the extraction tank (1) is fixedly connected to a return line (304), and the return line (304) is fixedly connected to the input end of the delivery pump (303).

4. The supercritical extraction equipment with a temperature control system according to claim 2, characterized in that: The bottom of the extraction tank body (1) is fixedly connected to a bottom protection filter plate (4); the connection portion between the fluid inlet pipe (301) and the extraction tank body (1) is lower than the bottom protection filter plate (4); the rotating shaft (106) is rotatably connected to the middle portion of the bottom protection filter plate (4); a discharge port (401) is provided on the outside of the bottom end of the extraction tank body (1); and the discharge port (401) is higher than the upper surface of the bottom protection filter plate (4).

5. The supercritical extraction equipment with a temperature control system according to claim 4, characterized in that: A communication port (402) is provided on the outside of the bottom end of the water bath temperature control tank (2), the discharge port (401) corresponds horizontally to the communication port (402), and a discharge pipe (403) is inserted between the discharge port (401) and the communication port (402), and the discharge pipe (403) is connected to the outer end of the communication port (402) via a flange.

6. The supercritical extraction equipment with a temperature control system according to claim 5, characterized in that: The discharge pipe (403) is rotatably connected to a discharge shaft (404) inside, and a spiral blade (405) is fixedly connected to the outside of one end of the discharge shaft (404) close to the extraction tank body (1), and the discharge shaft (404) extends into the interior of the extraction tank body (1).

7. The supercritical extraction equipment with a temperature control system according to claim 6, characterized in that: The connection portion between the rotating shaft (106) and the bottom filter plate (4) is bent in a U-shape corresponding to the discharge shaft (404). One end of the discharge shaft (404) extending into the extraction tank body (1) is fixedly connected to a closing cover (406). The closing cover (406) corresponds to the insertion end of the discharge pipe (403).

8. The supercritical extraction equipment with a temperature control system according to claim 6, characterized in that: The end of the discharge pipe (403) away from the water bath temperature control tank (2) is fixedly connected to the storage cylinder (407), and the end of the discharge shaft (404) away from the water bath temperature control tank (2) extends through the storage cylinder (407). The outside of the storage cylinder (407) is slidably connected to a telescopic drive module (408), and the output end of the telescopic drive module (408) is fixedly connected to the discharge shaft (404).

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