Constant temperature feed system

Abstract

The application relates to the technical field of lithium ion batteries, in particular to a constant-temperature feeding system. The constant-temperature feeding system comprises a temperature control unit, a tank body and a feeding pipeline connected with the tank body; the tank body comprises a tank wall, the tank wall is surrounded to form a slurry containing cavity, and a tank body interlayer with a hollow structure is arranged in the inside of the tank wall; the feeding pipeline comprises a feeding middle layer and a pipeline interlayer, the feeding middle layer is arranged in the middle of the feeding pipeline, the pipeline interlayer is arranged outside the feeding middle layer, and the feeding middle layer and the pipeline interlayer are both hollow structures; the feeding middle layer penetrates through the tank wall and is communicated with the slurry containing cavity, and the pipeline interlayer is communicated with the tank body interlayer; slurry in the slurry containing cavity can be discharged from the feeding middle layer, and circulating liquid can circulate through the tank body interlayer and the pipeline interlayer; the temperature control unit heats or cools the circulating liquid according to the actual temperature of the slurry, so that the actual temperature of the slurry is controlled at a predetermined temperature. The application solves the problem of poor temperature control effect of the slurry in the feeding tank in the prior art.

Description

Technical Field

[0001] This application relates to the field of lithium-ion battery technology, and in particular to a constant temperature feeding system. Background Technology

[0002] With the booming development of the lithium battery industry, the requirements for lithium battery manufacturing levels are also constantly increasing. As is well known, battery materials are becoming increasingly diverse, production processes are becoming more complex, and the risk of quality failure is greater, thus requiring higher standards of quality management. Regarding the viscosity change of coating slurry, increasing temperature reduces the viscosity of the slurry, making it easier for particles to disperse evenly within the slurry, thereby improving the stability and coating performance of the slurry. Conversely, excessively low temperatures lead to increased slurry viscosity, affecting dispersion and coating quality.

[0003] Therefore, temperature control of the coating feed tank is necessary. In existing technology, the temperature of the slurry inside the feed tank is controlled by wrapping heat exchange tubes around the outer circumference of the tank and introducing refrigerant into these tubes. However, this existing temperature control method results in a small heat exchange area and uneven heat exchange. Utility Model Content

[0004] The purpose of this application is to provide a constant temperature feeding system, thereby solving the problem that the temperature control effect of the slurry in the feeding tank in the prior art is poor.

[0005] This application provides a constant temperature feeding system, comprising a tank and a feeding pipe connected to the tank; the tank includes a tank wall, which encloses a slurry receiving cavity, and a hollow tank interlayer is provided inside the tank wall; the feeding pipe includes a feeding middle layer and a pipe interlayer, the feeding middle layer being located in the middle of the feeding pipe, and the pipe interlayer being located outside the feeding middle layer, both the feeding middle layer and the pipe interlayer being hollow structures; the feeding middle layer passes through the tank wall and communicates with the slurry receiving cavity, and the pipe interlayer communicates with the tank interlayer; the slurry in the slurry receiving cavity can be discharged from the feeding middle layer, and the circulating liquid of the temperature control unit can circulate through the tank interlayer and the pipe interlayer; the temperature control unit can monitor the actual temperature of the slurry in the slurry receiving cavity or the feeding middle layer, and heat or cool the circulating liquid according to the actual slurry temperature to control the actual slurry temperature at a predetermined temperature.

[0006] In any of the above technical solutions, the tank body further includes a first direction, a top and a bottom that are opposite to each other in the first direction, and the feeding pipe is connected to the bottom of the tank body; the bottom of the tank wall is provided with a tank body inlet communicating with the tank body interlayer, the top of the tank wall is provided with a tank body outlet communicating with the tank body interlayer, and the feeding pipe is provided with a pipe outlet communicating with the pipe interlayer. The circulating liquid can enter the tank body interlayer from the tank body inlet and flow out from the tank body outlet and the pipe outlet respectively.

[0007] In any of the above technical solutions, the tank body further includes a second direction perpendicular to the first direction; the tank body inlet and the tank body outlet are respectively located on opposite sides of the tank wall in the second direction.

[0008] In any of the above technical solutions, the tank wall further includes a side wall and a bottom wall, the bottom wall gradually slopes from its edge towards its center, the center of the bottom wall is lower than the side wall, the feeding pipe is connected to the center of the bottom wall; and / or, the tank inlet is connected to the tank interlayer of the bottom wall.

[0009] In any of the above technical solutions, the feeding pipe further includes a first section and a second section that are connected to each other, the first section extending along the first direction, and the second section perpendicular to the first section; the first section is connected to the bottom of the tank.

[0010] In any of the above technical solutions, the constant temperature feeding system further includes a bracket and a base connected to each other; the bracket is connected to the outer side of the tank wall to support the tank body, so that there is an installation gap between the tank body and the base, and the installation gap is used to install the feeding pipe.

[0011] In any of the above technical solutions, the pipe interlayer is further provided with a spiral water guiding structure, which is a continuous convex structure used to guide the circulating fluid to flow in a spiral direction.

[0012] In any of the above technical solutions, the spiral direction of the spiral water guiding structure forms an angle with the axial direction of the pipe interlayer, and the angle is 30° to 60°.

[0013] In any of the above technical solutions, the temperature control unit further includes a temperature sensor, a control terminal, and a mold temperature controller; the temperature sensor, the control terminal, and the mold temperature controller are communicatively connected; the liquid inlet of the tank is connected to the liquid outlet of the mold temperature controller, and the liquid outlet of the tank and the liquid outlet of the pipeline are connected to the liquid inlet of the mold temperature controller; the control terminal is preset with a predetermined temperature; the temperature sensor can detect the actual temperature of the slurry in the slurry containing cavity and send the detected actual temperature of the slurry to the control terminal; the control terminal controls the mold temperature controller to cool or heat the circulating liquid according to the actual temperature of the slurry.

[0014] In any of the above technical solutions, the control terminal further includes a display, which is used to display the actual temperature of the slurry and the predetermined temperature.

[0015] The constant temperature feeding system of this application includes a tank and a feeding pipe connected to the tank. The tank includes a tank wall that encloses a slurry receiving cavity, and a hollow tank interlayer is provided inside the tank wall. The feeding pipe includes a feeding middle layer and a pipe interlayer. The feeding middle layer is located in the middle of the feeding pipe, and the pipe interlayer is located outside the feeding middle layer. Both the feeding middle layer and the pipe interlayer are hollow structures. The feeding middle layer passes through the tank wall and communicates with the slurry receiving cavity, while the pipe interlayer communicates with the tank interlayer. Slurry in the slurry receiving cavity can be discharged from the feeding middle layer, and circulating liquid can circulate through the tank interlayer and the pipe interlayer. The temperature control unit can monitor the actual temperature of the slurry in the slurry receiving cavity or the feeding middle layer, and heat or cool the circulating liquid according to the actual slurry temperature to control the actual slurry temperature at a predetermined temperature.

[0016] Based on the above technical features, the beneficial effects of this application are as follows: The slurry supply path of this application is from the slurry receiving cavity to the supply pipe, and then discharged through the supply pipe (the supply middle layer within the supply pipe); to this end, this application sets up a jacket through which circulating liquid flows in the tank wall and the supply pipe to control the temperature of the slurry in the slurry receiving cavity and the supply pipe respectively. Specifically: This application incorporates hollow tank and pipe jackets within the tank wall and the feeding pipe, respectively. Both the tank and pipe jackets are circulated with a circulating liquid to control the temperature of the slurry in the slurry receiving cavity and the feeding middle layer, respectively. In other words, this application controls the slurry temperature by creating hollow jacketed flow channels within the tank wall and the feeding pipe, resulting in a larger heat exchange area, more uniform heat exchange, and a more compact design that occupies less space compared to existing technologies.

[0017] Based on this, this application monitors the actual temperature of the slurry in the slurry container or the middle layer of the supply through a temperature control unit, and heats or cools the circulating liquid according to the actual temperature of the slurry to control the actual temperature of the slurry at a predetermined temperature, thereby ensuring temperature control of the coating slurry.

[0018] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the overall structure of the constant temperature feeding system according to an embodiment of this application is shown; Figure 2 Show Figure 1 Top view; Figure 3 Show Figure 1 Side view; Figure 4 Show Figure 3 A schematic diagram of the AA cross-section.

[0021] Icons: 100-Tank body; 110-Tank wall; 1101-Side wall; 1102-Bottom wall; 111-Tank body interlayer; 112-Tank body inlet; 113-Tank body outlet; 114-Tank body feed inlet; 120-Slurry receiving cavity; 200-Feeding pipe; 210-First section; 220-Second section; 221-Pipe outlet; 230-Middle layer of feeding; 240-Pipe interlayer; 250-Spiral water guiding structure; 300-Support; 400-Base; 500-Temperature sensor; Y-First direction; X-Second direction. Detailed Implementation

[0022] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0023] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0024] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0025] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0026] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0027] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0028] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0029] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0030] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0031] Prior to this application, the existing technology for temperature control of the slurry in the feed tank involved wrapping heat exchange tubes around the outer circumference of the feed tank and introducing refrigerant into the heat exchange tubes to control the temperature of the slurry in the feed tank. However, this temperature control method in the prior art has a small heat exchange area and uneven heat exchange.

[0032] In view of this, this application provides a constant temperature feeding system, thereby solving the problem of poor temperature control effect of the existing temperature control methods for slurry in the feeding tank. See below for details. Figures 1 to 4 This application describes a constant-temperature feeding system according to some embodiments. Furthermore, for ease of description, the tank 100 will be described below with a first direction Y and a second direction X, wherein the first direction Y and the second direction X are perpendicular, and this perpendicularity can be 90° ± 5°.

[0033] like Figure 1 and Figure 4 As shown, the constant temperature feeding system of this application includes a temperature control unit, a tank 100, and a feeding pipe 200 connected to the tank 100. The tank 100 includes a tank wall 110, which encloses a slurry receiving cavity 120. A hollow tank interlayer 111 is disposed inside the tank wall 110. The feeding pipe 200 includes a feeding middle layer 230 and a pipe interlayer 240. The feeding middle layer 230 is located in the middle of the feeding pipe 200, and the pipe interlayer 240 is located outside the feeding middle layer 230. Both the feeding middle layer 230 and the pipe interlayer 240 are hollow structures. The feeding middle layer 230 passes through the tank wall. 110 is connected to the slurry receiving cavity 120, and the pipe jacket 240 is connected to the tank jacket 111. The slurry in the slurry receiving cavity 120 can be discharged from the feeding middle layer 230. The circulating liquid of the temperature control unit can circulate through the tank jacket 111 and the pipe jacket 240. The temperature control unit can monitor the actual temperature of the slurry in the slurry receiving cavity 120 or the feeding middle layer 230, and heat or cool the circulating liquid according to the actual temperature of the slurry to control the actual temperature of the slurry at a predetermined temperature.

[0034] In other words, the slurry supply path of this application is from the slurry receiving cavity 120 to the supply pipe 200, and then discharged through the supply pipe 200 (the supply middle layer 230 within the supply pipe 200). To address this, this application provides a jacket for the circulating liquid within the tank wall 110 and the supply pipe 200 to control the temperature of the slurry within the slurry receiving cavity 120 and the supply pipe 200, respectively. Specifically: This application provides hollow tank jacket 111 and pipe jacket 240 inside the tank wall 110 and the feeding pipe 200, respectively. Both the tank jacket 111 and the pipe jacket 240 are filled with circulating liquid to control the temperature of the slurry in the slurry receiving cavity 120 and the feeding middle layer 230, respectively. In other words, the temperature control method of this application involves providing hollow jacketed flow channels inside the tank wall 110 and the feeding pipe 200, respectively. Compared with the prior art, this method offers a larger heat exchange area, more uniform heat exchange, and a compact design that occupies less space.

[0035] Based on this, this application uses a temperature control unit to monitor the actual temperature of the slurry in the slurry container or the middle layer of the feed, and heats or cools the circulating liquid according to the actual slurry temperature to control the actual slurry temperature at a predetermined temperature, thereby ensuring temperature control of the coating slurry. The structure of the temperature control unit and the temperature control method will be described below.

[0036] In the embodiments of this application, such as Figure 1 and Figure 4 As shown, the tank 100 includes a top and a bottom opposite each other in a first direction Y. Preferably, the feed pipe 200 is connected to the bottom of the tank 100. Specifically, as... Figure 4 As shown, the tank wall 110 includes a side wall 1101 and a bottom wall 1102. The bottom wall 1102 gradually slopes from its edge towards its center, and the center of the bottom wall 1102 is lower than that of the side wall 1101. The feed pipe 200 is connected to the center of the bottom wall 1102. This arrangement not only facilitates the accumulation and outflow of slurry in the slurry receiving cavity 120, but also facilitates the installation of the feed pipe 200 and the circulation of the circulating liquid.

[0037] In the embodiments of this application, preferably, such as Figure 1 As shown, the feeding pipe 200 includes a first section 210 and a second section 220 that are connected to each other. The first section 210 extends along a first direction Y, and the second section 220 is perpendicular to the first section 210. The first section 210 is connected to the middle of the bottom wall 1102. This arrangement not only facilitates the installation of the feeding pipe 200 and its connection to the next process equipment, but also results in a compact structure and small footprint for the entire constant temperature feeding system.

[0038] In embodiments of this application, the tank 100 and the feeding pipe 200 can be installed using a support structure. Specifically, as shown... Figures 1 to 4 As shown, the constant temperature feeding system also includes a support 300 and a base 400 connected to each other. The support 300 is connected to the outer side of the tank wall 110 to support the tank body 100, so that there is an installation gap between the tank body 100 and the base 400 for installing the feeding pipe 200. Preferably, there are three supports 300 evenly distributed.

[0039] The following will refer to Figure 1 and Figure 4 Describe the circulation path of the circulating fluid in this application.

[0040] The tank wall 110 of this application has a tank inlet 112 at the bottom that communicates with the tank interlayer 111, and a tank outlet 113 at the top that communicates with the tank interlayer 111. The feed pipe 200 has a pipe outlet 221 that communicates with the pipe interlayer 240. The circulating liquid can enter the tank interlayer 111 through the tank inlet 112 and flow out through the tank outlet 113 and the pipe outlet 221 respectively.

[0041] It should be noted that the liquid inlet 112, liquid outlet 113, and liquid outlet 221 of the pipeline can all be in the form of a pipeline. The pipeline can be integrally formed with the tank wall 110 or the feeding pipeline 200, or the pipeline can be installed independently with the tank wall 110 or the feeding pipeline 200.

[0042] Furthermore, to maximize and uniformly increase the heat exchange area of ​​the circulating fluid, thereby improving its heat exchange effect, preferably, in the embodiments of this application, the tank inlet 112 and the tank outlet 113 are respectively located on opposite sides of the tank wall 110 in the second direction X, with the tank inlet 112 communicating with the tank interlayer 111 of the bottom wall 1102. Thus, the circulating fluid (e.g., water pumped out by the mold temperature controller) enters through the tank inlet 112, circulates to the tank interlayer 111 and the pipe interlayer 240, flows out through the tank outlet 113 and the pipe outlet 221, and then flows back to the mold temperature controller for cooling or heating.

[0043] Furthermore, in embodiments of this application, a water-guiding structure can be provided inside the feeding pipe 200 (second section 220). This water-guiding structure allows for more uniform heat exchange between the circulating liquid and the slurry in the feeding middle layer 230. Specifically, as... Figure 4 As shown, a spiral water guiding structure 250 is provided inside the pipe interlayer 240. The spiral water guiding structure 250 is a continuous protrusion used to guide the circulating fluid to flow in a spiral direction.

[0044] Preferably, the spiral direction of the spiral water guiding structure 250 forms an angle with the axial direction of the pipe interlayer 240, with the angle being 30° to 60°. With this configuration, the spiral water guiding structure 250 not only makes the heat exchange between the circulating liquid and the slurry in the feeding middle layer 230 more uniform, but also strengthens the structural strength of the feeding pipe 200 (second section 220).

[0045] Furthermore, the constant temperature feeding system of this application also includes a stirring paddle. The temperature control unit includes a temperature sensor 500. The top of the tank wall 110 has a tank inlet 114 communicating with the slurry receiving cavity 120. The stirring paddle is disposed inside the slurry receiving cavity 120 to stir the slurry within the cavity, which is used for coating battery electrodes. The temperature sensor 500 passes through the tank wall 110 to detect the actual temperature of the slurry inside the slurry receiving cavity 120, precisely controlling the temperature of the slurry during the coating process.

[0046] Furthermore, the temperature control unit of this application also includes a mold temperature controller and a control terminal. The mold temperature controller controls the temperature of the circulating liquid in the tank jacket 111 and the pipe jacket 240, thereby regulating the slurry temperature. The constant temperature feeding system of this application has high temperature control accuracy, can control the slurry temperature fluctuation within ±1℃, and can realize real-time detection and automatic feedback.

[0047] When the aforementioned constant temperature feeding system is connected to the mold temperature controller, the liquid inlet 112 of the tank is connected to the liquid outlet of the mold temperature controller, and the liquid outlet 113 of the tank and the liquid outlet 221 of the pipeline are connected to the liquid inlet of the mold temperature controller. The control terminal has a preset temperature, and the temperature sensor 500 can detect the actual temperature of the slurry in the slurry receiving cavity 120 and send the detected actual temperature of the slurry to the control terminal. When the actual temperature of the slurry is higher than the preset temperature, the control terminal controls the mold temperature controller to cool the circulating liquid; when the actual temperature of the slurry is lower than the preset temperature, the control terminal controls the mold temperature controller to heat the circulating liquid.

[0048] When the mold temperature controller is working, its circulating pump draws circulating fluid (usually water) from the tank containing the heater and cooler, enters through the tank inlet 112, circulates to the tank jacket 111 and pipe jacket 240, flows out through the tank outlet 113 and pipe outlet 221, and then flows back into the tank for cooling or heating. During this process, the temperature sensor 500 continuously monitors the actual temperature of the slurry and feeds the data back to the control terminal in real time. The control terminal controls the operation of the heater or cooler of the mold temperature controller according to the set preset temperature to control the temperature of the circulating fluid, thereby indirectly controlling the temperature of the slurry in the slurry receiving chamber 120 and the feeding middle layer 230. When the actual temperature of the slurry is higher than the preset temperature, the control terminal will activate the cooler and open the cooling valve to cool the circulating fluid. Conversely, if the actual temperature of the slurry is lower than the preset temperature, the control terminal will activate the heater to heat the circulating fluid.

[0049] In summary, this application incorporates a jacketed structure within the tank wall 110 and the feeding pipe 200, through which circulating liquid flows, to control the temperature of the slurry within the slurry receiving cavity 120 and the feeding pipe 200, thereby improving the uniformity of electrode surface density and enhancing battery performance, including capacity, cycle life, and safety. This reduces the risk of scrapping finished batteries due to inconsistent pressure differentials, increases production efficiency, lowers production costs, and reduces energy consumption and material waste.

[0050] This application features a hollow tank jacket 111 and a pipe jacket 240 inside the tank wall 110 and the feeding pipe 200, respectively. Both the tank jacket 111 and the pipe jacket 240 are filled with circulating liquid to control the temperature of the slurry in the slurry receiving cavity 120 and the feeding middle layer 230, respectively. When connected to a mold temperature controller, the tank inlet 112 is connected to the mold temperature controller's outlet, and the tank outlet 113 and the pipe outlet 221 are connected to the mold temperature controller's inlet. Compared to existing technologies, this design offers a larger heat exchange area, more uniform heat exchange, a compact structure, and a smaller footprint. It also ensures slurry temperature stability, guarantees consistent product quality, is easy to operate, and is readily integrated into existing coating production lines.

[0051] In addition, the control terminal of this application also includes a display, which is used to display the actual temperature and the predetermined temperature of the slurry, and parameters can be set and monitored through the display interface.

[0052] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the scope of the technology disclosed in this application, or make equivalent substitutions for some of the technical features. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application.

Claims

1. A constant temperature feed system, characterized by, The constant temperature feeding system includes a temperature control unit, a tank, and a feeding pipe connected to the tank; The tank body includes a tank wall, which encloses a slurry receiving cavity, and a hollow tank body interlayer is provided inside the tank wall; The feeding pipe includes a feeding middle layer and a pipe interlayer. The feeding middle layer is located in the middle of the feeding pipe, and the pipe interlayer is located on the outside of the feeding middle layer. Both the feeding middle layer and the pipe interlayer are hollow structures. The feeding middle layer passes through the tank wall and communicates with the slurry receiving cavity; the pipe interlayer communicates with the tank body interlayer. The slurry in the slurry receiving cavity can be discharged from the feeding middle layer, and the circulating liquid of the temperature control unit can circulate through the tank jacket and the pipe jacket. The temperature control unit can monitor the actual temperature of the slurry in the slurry container or the feeding middle layer, and heat or cool the circulating liquid according to the actual temperature of the slurry to control the actual temperature of the slurry at a predetermined temperature.

2. The constant temperature feed system of claim 1, wherein, The tank has a first orientation, the tank includes a top and a bottom that are opposite each other in the first orientation, and the feed pipe is connected to the bottom of the tank; The bottom of the tank wall has a tank inlet communicating with the tank interlayer, and the top of the tank wall has a tank outlet communicating with the tank interlayer. The feed pipe has a pipe outlet communicating with the pipe interlayer. The circulating liquid can enter the tank interlayer through the tank inlet and flow out through the tank outlet and the pipe outlet respectively.

3. The constant temperature feed system of claim 2, wherein, The tank body also has a second direction perpendicular to the first direction; The inlet and outlet of the tank are respectively located on opposite sides of the tank wall in the second direction.

4. The constant temperature feed system of claim 2, wherein, The tank wall includes a side wall and a bottom wall. The bottom wall gradually slopes from its edge toward its center. The center of the bottom wall is lower than the side wall. The feeding pipe is connected to the center of the bottom wall. And / or, the liquid inlet of the tank is connected to the tank interlayer of the bottom wall.

5. The constant temperature feed system of claim 2, wherein, The feeding pipe includes a first section and a second section that are connected to each other, the first section extending along the first direction, and the second section perpendicular to the first section; The first segment is connected to the bottom of the tank.

6. The constant temperature feed system of claim 2, wherein, The constant temperature feeding system also includes a support frame and a base that are connected to each other; The bracket is connected to the outer side of the tank wall to support the tank body, so that there is an installation gap between the tank body and the base, and the installation gap is used to install the feeding pipe.

7. The constant temperature feeding system according to any one of claims 2-6, characterized in that, The pipe interlayer is equipped with a spiral water guiding structure, which consists of continuous protrusions used to guide the circulating fluid to flow in a spiral direction.

8. The constant temperature feed system of claim 7, wherein, The spiral direction of the spiral water guiding structure forms an angle with the axial direction of the pipe interlayer, and the angle is 30° to 60°.

9. The constant temperature feed system of claim 2, wherein, The temperature control unit includes a temperature sensor, a control terminal, and a mold temperature controller; the temperature sensor, the control terminal, and the mold temperature controller are communicatively connected. The liquid inlet of the tank is connected to the liquid outlet of the mold temperature controller, the liquid outlet of the tank and the liquid outlet of the pipeline are connected to the liquid inlet of the mold temperature controller, and the control terminal is preset with the predetermined temperature. The temperature sensor can detect the actual temperature of the slurry in the slurry container and send the detected actual temperature of the slurry to the control terminal. The control terminal controls the mold temperature controller to cool or heat the circulating liquid based on the actual temperature of the slurry.

10. The constant temperature feed system of claim 9, wherein, The control terminal includes a display for displaying the actual temperature of the slurry and the predetermined temperature.

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