Temperature adjusting device for extraction liquid and extraction system

Abstract

The utility model discloses a temperature adjusting device of extraction liquid and an extraction system, and relates to the technical field of extraction and separation, and the temperature adjusting device of the extraction liquid comprises a liquid mixer and a heat exchange assembly, the liquid mixer is provided with a first liquid inlet, a second liquid inlet and a first liquid outlet; the heat exchange assembly comprises a plurality of stacked heat exchange plates, first fluid channels and second fluid channels are formed between the heat exchange plates, and the first fluid channels and the second fluid channels are alternately arranged in the stacking direction of the heat exchange plates; the first end of the first fluid channel is connected with the first liquid outlet, and the second end of the first fluid channel is used for being connected with an extraction device; the first fluid channel is used for allowing extraction liquid to flow; the second fluid channel is used for allowing the heat exchange medium to flow. The technical scheme provided by the utility model has the advantage of high heat exchange efficiency, the heat exchange assembly is prevented from being soaked in the extraction liquid for a long time, the purity of the extraction liquid is ensured, and the extraction quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of extraction and separation, in particular to a temperature regulating device for extraction liquid and an extraction system. Background Art

[0002] Extraction is a commonly used extraction and separation technology in the fields of chemical, biological, and pharmaceutical industries. During the extraction process, the temperature of the liquid in the extraction device may rise and fall due to chemical reactions, physical changes, or increased ambient temperature, thus affecting the extraction efficiency and product quality.

[0003] At present, a method commonly used to heat up and cool down the liquid in the extraction device is to set a coil inside the extraction device, and exchange heat with the extraction liquid through the heating or cooling medium circulating in the coil, so as to achieve the heating or cooling effect; because the extraction liquid is generally corrosive, the coil is placed in the extraction device for a long time, which is equivalent to being immersed in the extraction liquid for a long time, resulting in the risk of corrosion of the coil. The substances produced after the coil is corroded will contaminate the extraction liquid, which may affect the extraction quality. Utility Model Content

[0004] The main purpose of the utility model is to provide a temperature regulating device for extraction liquid, aiming to solve the problem that the existing extraction heating device easily affects the extraction quality.

[0005] In order to achieve the above-mentioned purpose, the temperature regulating device for extracting liquid proposed by the utility model comprises:

[0006] A liquid mixer, wherein the liquid mixer is provided with a first liquid inlet, a second liquid inlet and a first liquid outlet;

[0007] A heat exchange component, the heat exchange component includes a plurality of stacked heat exchange plates, a first fluid channel and a second fluid channel are formed between each of the heat exchange plates, the first fluid channel and the second fluid channel are alternately arranged in the stacking direction of the heat exchange plates; a first end of the first fluid channel is connected to the first liquid outlet, and a second end of the first fluid channel is used to connect to an extraction device; the first fluid channel is used to allow the extraction liquid to flow; and the second fluid channel is used to allow the heat exchange medium to flow.

[0008] In one embodiment, the heat exchange assembly further comprises an output pipe, a first end of the output pipe is connected to the second end of the first fluid channel, and a second end of the output pipe is used to be connected to an extraction device.

[0009] In one embodiment, the output pipe is further provided with a mounting portion, the temperature regulating device for the extraction liquid further comprises a temperature sensor, and the mounting portion is used to mount the temperature sensor; and / or,

[0010] The heat exchange assembly further includes a plurality of sealing gaskets, which are disposed between adjacent heat exchange plates and are used to seal the gaps between the heat exchange plates to form the first fluid channel and the second fluid channel.

[0011] In one embodiment, the sealing gasket is made of fluororubber material; and / or,

[0012] The heat exchange plate is made of titanium.

[0013] In one embodiment, the first liquid inlet is further connected to a first check valve, and the second liquid inlet is further connected to a second check valve; and / or,

[0014] A first pump body is provided on a side of the first check valve away from the first liquid inlet, and the first pump body is used to input the extractant into the liquid mixer; a second pump body is provided on a side of the second check valve away from the second liquid inlet, and the second pump body is used to input the alkali solution into the liquid mixer.

[0015] In one embodiment, the liquid mixer comprises a liquid mixing tube, and the liquid mixing tube is made of polyvinyl chloride material or steel-lined polytetrafluoroethylene material.

[0016] In one embodiment, the heat exchange plate is provided with a third liquid inlet and a third liquid outlet, the third liquid inlet is connected to the first end of the first fluid channel, the third liquid outlet is located at the second end of the second fluid channel, the third liquid inlet is connected to the first liquid outlet of the liquid mixer, and the third liquid outlet is used to connect to the extraction device; and / or,

[0017] The heat exchange plate is further provided with a fourth liquid inlet and a fourth liquid outlet, one end of the fourth liquid inlet is connected to the first end of the second fluid channel, and the other end of the fourth liquid outlet is connected to the second end of the second fluid channel.

[0018] In one embodiment, the fourth liquid inlet is provided with a first valve body, a first interface of the first valve body is connected to one end of the second fluid channel, a second interface of the first valve body is used to access a heat exchange medium having a first preset temperature, and a third interface of the first valve body is used to access a heat exchange medium having a second preset temperature; and / or,

[0019] The fourth liquid outlet is provided with a second valve body, the first interface of the second valve body is connected to the other end of the second fluid channel, the second interface of the second valve body is used to connect to the freezing tower, and the third structure of the second valve body is used to connect to the water reservoir.

[0020] In one embodiment, the temperature adjustment device for the extraction liquid further includes a circuit board, and the circuit board is electrically connected to the first valve body, the second valve body and the temperature sensor respectively.

[0021] The utility model further provides an extraction system, comprising the temperature regulating device for the extraction liquid as described above, the extraction system further comprising an extraction device, and the second end of the first fluid channel is connected to the extraction device.

[0022] The technical solution of the utility model is to input alkali solution through the first liquid inlet of the liquid mixer, input extraction liquid through the second liquid inlet of the liquid mixer, use the liquid mixer to mix the alkali solution and the extraction liquid, and then output them to the first fluid channel of the heat exchange plate through the first liquid outlet, the first fluid channel is used for the extraction liquid to flow; at the same time, the second fluid channel of the heat exchange plate is used for the heat exchange medium to flow, the heat exchange medium is heat exchanged through the heat exchange plate when flowing in the second fluid channel, and the extraction liquid is heat exchanged through the heat exchange plate when flowing in the first fluid channel, so that the extraction liquid can achieve the purpose of heating or cooling. The temperature regulating device of the extraction liquid realizes efficient heat exchange through the first heat exchange channel and the second heat exchange channel of the heat exchange plate. Since the first fluid channel and the second fluid channel are alternately arranged in the stacking direction of the heat exchange plate, the heat exchange medium and the extraction liquid are heat exchanged through the heat exchange plate, which has the advantage of high heat exchange efficiency, and the heat exchange plate can be arranged outside the extraction device to avoid the heat exchange component from being immersed in the extraction liquid for a long time, thereby ensuring the purity of the extraction liquid and improving the extraction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0024] Figure 1 A schematic structural diagram of an embodiment of a temperature regulating device for extracting liquid provided by the utility model;

[0025] Figure 2 A schematic structural diagram of a heat exchange component of an embodiment of a temperature regulating device for extracting liquid provided by the utility model;

[0026] Figure 3 A schematic side view of the structure of a heat exchange component of an embodiment of a temperature adjustment device for extracting liquid provided by the utility model;

[0027] Figure 4This is a structural schematic diagram of an extraction system according to an embodiment of the present invention.

[0028] Description of Figure Numbers:

[0029] 1. Liquid mixer; 11. First check valve; 12. Second check valve; 13. First pump body; 14. Second pump body; 15. First liquid inlet; 16. Second liquid inlet; 2. Heat exchange component; 21. Heat exchange plate; 22. First fluid channel; 23. Second fluid channel; 24. Output pipe; 25. Third liquid inlet; 26. Third liquid outlet; 27. Fourth liquid inlet; 28. Fourth liquid outlet; 3. Temperature sensor; 4. First valve body; 5. Second valve body; 6. Extraction device.

[0030] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0034] The utility model provides a temperature regulating device for extracting liquid.

[0035] See also Figures 1 to 4 In one embodiment of the utility model, the temperature regulating device of the extraction liquid includes a liquid mixer 1 and a heat exchange component 2; the liquid mixer 1 is provided with a first liquid inlet 15, a second liquid inlet 16 and a first liquid outlet; the heat exchange component 2 includes a plurality of stacked heat exchange plates 21, and a first fluid channel 22 and a second fluid channel 23 are formed between each heat exchange plate 21, and the first fluid channel 22 and the second fluid channel 23 are alternately arranged in the stacking direction of the heat exchange plate 21; the first end of the first fluid channel 22 is connected to the first liquid outlet, and the second end of the first fluid channel is used to connect to the extraction device 6; the first fluid channel 22 is used for the extraction liquid to flow; the second fluid channel 23 is used for the heat exchange medium to flow.

[0036] In the above structure, alkali solution is input through the first liquid inlet 15 of the liquid mixer 1, and extraction liquid is input through the second liquid inlet 16 of the liquid mixer 1. The alkali solution and the extraction liquid are mixed by the liquid mixer 1 and output to the first fluid channel 22 of the heat exchange plate 21 through the first liquid outlet. The first fluid channel 22 is used for the flow of the extraction liquid. At the same time, the second fluid channel 23 of the heat exchange plate 21 is used for the flow of heat exchange medium. When the heat exchange medium flows in the second fluid channel 23, heat exchange is performed through the heat exchange plate 21. When the extraction liquid flows in the first fluid channel, heat exchange is performed through the heat exchange plate 21, so that the extraction liquid can achieve the purpose of heating or cooling. The temperature regulating device of the extraction liquid realizes efficient heat exchange through the first heat exchange channel and the second heat exchange channel of the heat exchange plate 21. Since the first fluid channel 22 and the second fluid channel 23 are alternately arranged in the stacking direction of the heat exchange plate 21, the heat exchange medium and the extraction liquid are heat exchanged through the heat exchange plate 21, which has the advantage of high heat exchange efficiency. The heat exchange plate 21 can be arranged outside the extraction device 6 to avoid the heat exchange component 2 being immersed in the extraction liquid for a long time, thereby ensuring the purity of the extraction liquid and thus improving the extraction quality.

[0037] Among them, the first liquid inlet 15 of the liquid mixer 1 is used to input alkali solution through the first pump body 13, and the second liquid inlet 16 of the liquid mixer 1 is used to input extractant through the second pump body 14. The alkali solution and the extractant are saponified in the liquid mixer 1 to form an extraction liquid. Saponification can increase the solubility of certain organic compounds in the extraction liquid, improve the separation effect of the target substance and impurities, and improve the separation effect of the target substance and impurities.

[0038] In one embodiment, the heat exchange assembly 2 further includes an output pipe 24, a first end of the output pipe 24 is connected to the second end of the first fluid channel 22, and a second end of the output pipe 24 is used to connect to the extraction device 6. In the above structure, the output pipe 24 is provided to output the heated or cooled extraction liquid in the heat exchange assembly 2 to the extraction device 6, wherein the length of the output pipe 24 is less than 0.5 m, so as to reduce the heat loss generated by the extraction liquid during the transportation process.

[0039] In one embodiment, a mounting portion is further provided on the output pipe 24, and the temperature adjustment device for the extraction liquid further includes a temperature sensor 3, and the mounting portion is used to install the temperature sensor 3. By providing a mounting portion on the output pipe 24 for installing the temperature sensor 3, the real-time temperature of the extraction liquid flowing in the output pipe 24 can be obtained, so that the extraction liquid can be maintained at a preset temperature, thereby improving the extraction efficiency of the extraction system.

[0040] In one embodiment, the heat exchange assembly 2 further includes a plurality of sealing gaskets, which are arranged between adjacent heat exchange plates 21 and are used to seal the gaps between the heat exchange plates 21 to form a first fluid channel 22 and a second fluid channel 23. The heat exchange plates 21 serve as a heat transfer structure for the extraction liquid and the heat exchange medium. The first fluid channel 22 and the second fluid channel 23 are formed between the stacked heat exchange plates 21, which can separate the two fluids and prevent the two fluids from mixing. The heat is first transferred from the heat exchange fluid to the heat exchange plate 21 through one side wall of the heat exchange plate 21, and then transferred to the extraction liquid through the other side wall of the heat exchange plate 21. The fluids on both sides of the heat exchange plate 21 contact the wall of the heat exchange plate 21 by convection, thereby achieving efficient heat transfer.

[0041] In one embodiment, the sealing gasket is made of fluororubber material. Fluorine rubber is a high-performance synthetic rubber, which contains fluorine atoms in its molecular structure and can maintain stability under extreme temperature conditions. The long-term working temperature can reach 200°C to 250°C, and the short-term temperature can withstand up to 300°C. It has good acid and alkali resistance, which prevents the sealing gasket from being corroded by alkali liquid or extractant and affecting the sealing of the first fluid channel 22 and the second fluid channel 23.

[0042] In one embodiment, the heat exchange plate 21 is made of titanium. Titanium forms a dense oxide film in the air, which is very stable and can protect the titanium from further corrosion. Therefore, titanium has good resistance to both acidic and alkaline liquids.

[0043] In one embodiment, the first liquid inlet 15 is further connected to the first check valve 11, and the second liquid inlet 16 is further connected to the second check valve 12; a first pump body 13 is provided on the side of the first check valve 11 away from the first liquid inlet 15, and the first pump body 13 is used to input the extractant into the liquid mixer 1; a second pump body 14 is provided on the side of the second check valve 12 away from the second liquid inlet 16, and the second pump body 14 is used to input the alkali solution into the liquid mixer 1. The first pump body 13 pumps the extractant into the liquid mixer 1, and the second pump body 14 pumps the alkali solution into the liquid mixer 1; the first check valve 11 and the second check valve 12 mainly prevent the fluid from flowing in the liquid mixer 1 in reverse, so as to ensure that the extractant or the alkali solution can only flow into the liquid mixer 1 in one direction, so that the first pump body 13 and the second pump body 14 are not damaged by reverse pressure or reverse flow of liquid.

[0044] In addition, the input amount of the alkali solution can be adjusted through the first pump body 13, and the input amount of the extractant can be adjusted through the second pump body 14, so as to adjust the ratio of the alkali solution and the extractant, or adjust the output flow rate of the extraction liquid.

[0045] In one embodiment, the mixing tube includes a mixing tube, which is made of polyvinyl chloride material (PVC) or steel-lined tetrafluoroethylene material. Among them, polyvinyl chloride material has good corrosion resistance to many chemical substances such as water, salt water, acid and alkali, which can prevent the mixing tube from being corroded by alkali solution and extractant; and polyvinyl chloride material has good performance in the temperature range of -15°C to 60°C, which can meet the long-term flow of the extraction liquid in the mixed liquid before heating. The steel-lined tetrafluoroethylene material is also called steel-lined polytetrafluoroethylene, which is a structure that uses polytetrafluoroethylene (PTFE) as a lining material and is combined with a steel substrate. This structure combines the high strength of steel with the chemical corrosion resistance and high temperature resistance of PTFE. PTFE has extremely high resistance to almost all chemical substances, including strong acids, strong alkalis, oxidants and organic solvents. PTFE can be used for a long time in the temperature range of -200°C to 260°C, and can withstand higher temperatures in a short time. It can meet the long-term flow of the extraction liquid in the output pipe 24 after heating or cooling.

[0046] In one embodiment, the heat exchange plate 21 is provided with a third liquid inlet 25 and a third liquid outlet 26, the third liquid inlet 25 is connected at the first end of the first fluid channel 22, the third liquid outlet 26 is located at the second end of the second fluid channel 23, the third liquid inlet 25 is connected to the first liquid outlet of the liquid mixer 1, and the third liquid outlet 26 is used to connect to the extraction device 6. The third liquid inlet 25 and the third liquid outlet 26 are provided at both ends of the long side extension direction of the heat exchange plate 21, so that the extraction liquid flows into the first fluid channel 22 from the third liquid inlet 25 and flows out from the third liquid outlet 26.

[0047] In one embodiment, the heat exchange plate 21 is further provided with a fourth liquid inlet 27 and a fourth liquid outlet 28, one end of the fourth liquid inlet 27 is connected to the first end of the second fluid channel 23, and the other end of the fourth liquid outlet 28 is connected to the second end of the second fluid channel 23. The fourth liquid inlet and the fourth liquid outlet 28 are provided at both ends of the long side extension direction of the heat exchange plate 21, so that the heat exchange medium flows into the second fluid channel 23 from the fourth liquid inlet 27 and flows out from the fourth liquid outlet 28. Among them, the fourth liquid inlet 27 is provided next to the third liquid inlet 25, and the fourth liquid outlet 28 is provided next to the third liquid outlet 26, so as to connect the mixing pipe and the extraction device 6.

[0048] In one embodiment, the fourth liquid inlet 27 is provided with a first valve body 4, the first interface of the first valve body 4 is connected to one end of the second fluid channel 23, the second interface of the first valve body 4 is used to access the heat exchange medium with a first preset temperature, and the third interface of the first valve body 4 is used to access the heat exchange medium with a second preset temperature; the fourth liquid outlet 28 is provided with a second valve body 5, the first interface of the second valve body 5 is connected to the other end of the second fluid channel 23, the second interface of the second valve body 5 is used to connect to the freezing tower, and the third structure of the second valve body 5 is used to connect to the water reservoir. The heat exchange medium with the first preset temperature, such as cooling water, can be introduced through the second interface of the first valve body 4, and the heat exchange medium with the second preset temperature, such as steam or hot water, can be introduced through the second interface of the first valve body 4 and the third interface of the first valve body 4 is opened. The condensed water formed by the steam after heat exchange can be introduced into the water reservoir, and at this time, the third interface of the second valve body 5 is opened so that the condensed water can be reused. After the cooling water re-enters the cooling tower for cooling after heat exchange, the second interface of the second valve body 5 is opened, and the water in the cooling tower can be input into the second fluid channel 23 again. Among them, the first valve body 4 and the second valve body 5 can adopt a three-way valve.

[0049] In one embodiment, the temperature regulating device for the extraction liquid further includes a circuit board, which is electrically connected to the first valve body 4, the second valve body 5 and the temperature sensor 3 respectively. The temperature sensor 3 is used to obtain the temperature value of the extraction liquid output from the output pipe 24 to the extraction device 6, and transmit the temperature value to the circuit board, which is used to compare the temperature value with the working temperature range. When the temperature value is higher than the working temperature range and needs to be cooled, the second interface of the first valve body 4 is opened, and the extraction liquid is cooled by cooling water; then the second interface of the second valve body is opened to discharge the cooling water to the cooling tower. When the temperature value is lower than the working temperature range and needs to be heated, the third interface of the first valve body 4 is opened, and the extraction liquid is heated by steam, so that the temperature of the extraction liquid is kept within the working temperature range to ensure the extraction efficiency; then the third interface of the second valve body 5 is opened to discharge the condensed water formed by the steam to the water reservoir.

[0050] The present invention further provides an extraction system, comprising the temperature regulating device for the extraction liquid as described above. The extraction system further comprises an extraction device 6 , and the second end of the first fluid channel 22 is connected to the extraction device 6 .

[0051] The extraction device 6 includes an extraction box, and the temperature sensor 3 can also be arranged in the extraction box. The temperature sensor 3 is used to obtain the temperature value of the extraction liquid in the extraction box in real time to improve the temperature control accuracy of the extraction liquid. The extraction system also includes a freezing tower and a water storage tank. After the cooling water re-enters the cooling tower for cooling after heat exchange, the water in the cooling tower can be input into the second fluid channel 23 again; the condensed water formed by the steam after heat exchange can be passed into the water storage tank so that the condensed water can be reused.

[0052] The technical solution of the utility model is to input alkali solution through the first liquid inlet 15 of the liquid mixer 1, input extraction liquid through the second liquid inlet 16 of the liquid mixer 1, and use the liquid mixer 1 to mix the alkali solution and the extraction liquid and output them to the first fluid channel 22 of the heat exchange plate 21 through the first liquid outlet. The first fluid channel 22 is used for the flow of the extraction liquid; at the same time, the second fluid channel 23 of the heat exchange plate 21 is used for the flow of heat exchange medium. When the heat exchange medium flows in the second fluid channel 23, heat exchange is performed through the heat exchange plate 21. When the extraction liquid flows in the first fluid channel 22, heat exchange is performed through the heat exchange plate 21, so that the extraction liquid can achieve the purpose of heating or cooling. The temperature regulating device of the extraction liquid realizes efficient heat exchange through the first heat exchange channel and the second heat exchange channel of the heat exchange plate 21. Since the first fluid channel 22 and the second fluid channel 23 are alternately arranged in the stacking direction of the heat exchange plate 21, the heat exchange medium and the extraction liquid are heat exchanged through the heat exchange plate 21, which has the advantage of high heat exchange efficiency. The heat exchange plate 21 can be arranged outside the extraction device 6 to avoid the heat exchange component 2 being immersed in the extraction liquid for a long time, thereby ensuring the purity of the extraction liquid and thus improving the extraction quality.

[0053] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A temperature regulating device for an extraction liquid, characterized in that: include: A liquid mixer, wherein the liquid mixer is provided with a first liquid inlet, a second liquid inlet and a first liquid outlet; A heat exchange component, the heat exchange component includes a plurality of stacked heat exchange plates, a first fluid channel and a second fluid channel are formed between each of the heat exchange plates, the first fluid channel and the second fluid channel are alternately arranged in the stacking direction of the heat exchange plates; a first end of the first fluid channel is connected to the first liquid outlet, and a second end of the first fluid channel is used to be connected to the extraction; the first fluid channel is used to allow the extraction liquid to flow; and the second fluid channel is used to allow the heat exchange medium to flow.

2. The temperature regulating device for the extraction liquid according to claim 1, characterized in that: The heat exchange assembly further includes an output pipe, a first end of the output pipe is connected to the second end of the first fluid channel, and a second end of the output pipe is used to be connected to an extraction device.

3. The temperature regulating device for the extraction liquid according to claim 2, characterized in that: The output pipe is further provided with a mounting portion, the temperature regulating device for the extraction liquid further comprises a temperature sensor, and the mounting portion is used to mount the temperature sensor; and / or, The heat exchange assembly further includes a plurality of sealing gaskets, which are disposed between adjacent heat exchange plates and are used to seal the gaps between the heat exchange plates to form the first fluid channel and the second fluid channel.

4. The temperature regulating device for the extraction liquid according to claim 3, characterized in that: The sealing gasket is made of fluororubber material; and / or, The heat exchange plate is made of titanium.

5. The temperature regulating device for the extraction liquid according to any one of claims 1 to 4, characterized in that: The first liquid inlet is further connected to a first check valve, and the second liquid inlet is further connected to a second check valve; and / or, A first pump body is provided on a side of the first check valve away from the first liquid inlet, and the first pump body is used to input the extractant into the liquid mixer; a second pump body is provided on a side of the second check valve away from the second liquid inlet, and the second pump body is used to input the alkali solution into the liquid mixer.

6. The temperature regulating device for the extraction liquid according to claim 5, characterized in that: The liquid mixer comprises a liquid mixing pipe, and the liquid mixing pipe is made of polyvinyl chloride material or steel-lined polytetrafluoroethylene material.

7. The temperature regulating device for the extraction liquid according to any one of claims 3 or 4, characterized in that: The heat exchange component is provided with a third liquid inlet and a third liquid outlet, the third liquid inlet is connected to the first end of the first fluid channel, the third liquid outlet is located at the second end of the second fluid channel, the third liquid inlet is connected to the first liquid outlet of the liquid mixer, and the third liquid outlet is used to connect to the extraction device; and / or, The heat exchange component is also provided with a fourth liquid inlet and a fourth liquid outlet, one end of the fourth liquid inlet is connected to the first end of the second fluid channel, and the other end of the fourth liquid outlet is connected to the second end of the second fluid channel.

8. The temperature regulating device for the extraction liquid according to claim 7, characterized in that: The fourth liquid inlet is provided with a first valve body, a first interface of the first valve body is connected to one end of the second fluid channel, a second interface of the first valve body is used to access a heat exchange medium with a first preset temperature, and a third interface of the first valve body is used to access a heat exchange medium with a second preset temperature; and / or, The fourth liquid outlet is provided with a second valve body, the first interface of the second valve body is connected to the other end of the second fluid channel, the second interface of the second valve body is used to connect to the freezing tower, and the third structure of the second valve body is used to connect to the water reservoir.

9. The temperature regulating device for the extraction liquid according to claim 8, characterized in that: The temperature regulating device for the extraction liquid further comprises a circuit board, and the circuit board is electrically connected to the first valve body, the second valve body and the temperature sensor respectively.

10. An extraction system, characterized in that: The extraction system comprises the temperature regulating device for the extraction liquid according to any one of claims 1 to 9, and the extraction system further comprises an extraction device, and the second end of the first fluid channel is connected to the extraction device.

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