Drying roller set device

Abstract

A drying roller set device comprises a mold temperature controller and at least two heating rollers, an outlet of the mold temperature controller is connected with an inlet of each heating roller through a pipeline, and an outlet of any heating roller is connected with a return opening of the mold temperature controller through a pipeline. An electromagnetic valve and a heating device are respectively arranged on the pipeline at the inlet of any heating roller, and an infrared temperature measuring probe is respectively arranged on the outer side of any heating roller. The controller adjusts the electromagnetic valve and the induction coil according to the temperature measurement result of the infrared temperature measurement probe, and the opening degree of the electromagnetic valve is 100% under the condition that the surface temperature balance heat exchange of the roller body can be met. When the temperature exceeds a set value, the water inlet flow is reduced by controlling the electromagnetic valve, and the temperature of the heating roller is reduced. When the heating power of the mold temperature controller is insufficient or the temperature of a single roller body is insufficient, the induction coil conducts independent temperature compensation on the single heating roller, drying uniformity is guaranteed, and independent temperature closed-loop control over each heating roller is achieved.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to drying equipment used in a wet lithium battery diaphragm extraction section, in particular to a drying roller group device. Background Art

[0002] With the advent of the era of Industry 4.0, the manufacturing industry has increasingly higher requirements for intelligent, automated and precise equipment. In the production process of wet-process lithium battery separators, the drying process is a key step in product performance and safety. The drying effect of the drying roller group directly affects the quality and production efficiency of the product. As the core equipment to achieve this function, the performance of the drying roller group has a decisive influence on the quality of the final product. However, the drying roller group in the prior art, especially the streaming media heating roller with spiral flow channel, has been unable to meet the increasingly improved energy-saving, efficiency-enhancing and high-precision process requirements due to the limitations of design and control, and has the following defects:

[0003] Difficult to achieve independent temperature control: In traditional designs, the temperature control of the drying roller group usually relies on a centralized mold temperature controller, which is heated in parallel or series. This design allows the entire roller group to share a unified temperature setting, and the heat demand of each roller during the drying process is different. It is impossible to implement personalized and independent temperature control and adjustment for each roller, resulting in low thermal efficiency, the inability of some workstations to reach the required process temperature, and the inability to achieve the best drying effect in some specific areas.

[0004] The heat exchange power of each roller is different at different workstations. The heat exchange roller has different temperature requirements. When the material enters the roller group, the roller power requirement is large. As the temperature of the material rises, the roller power decreases. Under the same existing power configuration, the power of the rear roller of the roller group will be high. At this time, the roller temperature needs to be cooled down to meet the needs of the production process. The existing technology cannot independently adjust the temperature in sections.

[0005] Accuracy and traceability of temperature measurement: The actual temperature of the roller surface is usually obtained by contact temperature sensors, which are often slow to respond and have large lags, making it difficult to reflect temperature changes in real time, unable to adjust in time to adapt to changes in the production process, unable to accurately obtain the actual temperature of each roller surface, and insufficient to support high-precision temperature control. In addition, the lack of effective means to record and trace temperature changes throughout the production process increases uncertainty in the production process.

[0006] Energy waste: In centralized control mode, it is difficult to fine-tune the heating of individual rollers, which often leads to energy waste. Especially in the later stages of the drying process, some rollers may no longer require such high heat, but due to the limitations of the control system, they are still consuming energy. Summary of the invention

[0007] The utility model aims to provide a drying roller group device, which aims to solve the technical problem in the prior art that each heating roller in the roller group cannot be independently controlled and adjusted in temperature.

[0008] The utility model discloses a drying roller group device, comprising a mold temperature controller and at least two heating rollers, wherein the mold temperature controller outlet is respectively connected with the inlet of each heating roller through a pipeline, the outlet of any heating roller is respectively connected with the return port of the mold temperature controller through a pipeline, a solenoid valve and a heating device are respectively arranged on the pipeline at the inlet of any heating roller, an infrared temperature measuring probe is respectively arranged on the outer side of any heating roller, and the signal output end of the infrared temperature measuring probe, the control end of the solenoid valve and the control end of the heating device are all connected with a controller.

[0009] Furthermore, the heating device is an induction coil.

[0010] Furthermore, thermal insulation cotton is arranged between the induction coil and the pipe at the inlet of the heating roller.

[0011] Compared with the prior art, the utility model has a positive and obvious effect. The infrared temperature probe realizes non-contact temperature measurement and detects the real temperature of the surface of the heating roller in real time. The controller adjusts the solenoid valve and the induction coil according to the temperature measurement result of the infrared temperature probe. When the temperature balance heat exchange of the roller surface can be met, the solenoid valve is 100% open. When the temperature exceeds the set value, the water inlet flow is reduced by controlling the solenoid valve, the temperature of the heating roller is reduced, and energy waste is reduced. When the heating power of the mold temperature machine is insufficient or the temperature of a single roller is not enough, the induction coil independently supplements the temperature of a single heating roller to ensure drying uniformity, realize independent temperature closed-loop control of each heating roller, and can monitor and accurately adjust the temperature in real time, effectively reduce the risk of temperature exceeding the set value, improve the efficiency and product quality of the lithium battery diaphragm drying process, and can significantly improve the controllability and stability of the production process, meeting the requirements of modern industrial production for high efficiency, high precision and intelligence. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of a drying roller group device of the utility model. DETAILED DESCRIPTION

[0013] The present invention is further described below in conjunction with an embodiment, but the present invention is not limited to the embodiment. Any similar structure and similar changes of the present invention should be included in the protection scope of the present invention. The use of directions such as up, down, front, back, left, and right in the present invention is only for the convenience of clear description and is not a limitation on the technical solution of the present invention.

[0014] like Figure 1 As shown, a drying roller group device of the utility model comprises a mold temperature controller 1 and at least two heating rollers 2. The mold temperature controller outlet 3 is connected to the inlet of each heating roller 2 through a pipeline, and the outlet of any heating roller 2 is connected to the mold temperature controller return port 4 through a pipeline. A solenoid valve 5 and a heating device 6 are respectively arranged on the pipeline at the inlet of any heating roller 2, and an infrared temperature measuring probe 7 is respectively arranged on the outer side of any heating roller 2. The signal output end of the infrared temperature measuring probe 7, the control end of the solenoid valve 5, and the control end of the heating device 6 are all connected to a controller.

[0015] Furthermore, the heating device 6 is an induction coil.

[0016] Furthermore, a heat-insulating cotton 8 is provided between the induction coil and the pipe at the inlet of the heating roller 2, which can reduce the heat loss of the pipe on the one hand and increase the safety of the coil on the other hand.

[0017] Specifically, the controller is provided with a plurality of flow regulating units 9 and temperature regulating units 10, which are respectively connected to each solenoid valve 5 and heating device 6.

[0018] Specifically, the mold temperature controller 1, heating roller 2, heating roller 2, solenoid valve 5, heating device 6, infrared temperature measuring probe 7, induction coil, thermal insulation cotton 8, flow regulating unit 9, temperature regulating unit 10, etc. in this embodiment all adopt well-known solutions in the prior art, which are well understood by those skilled in the art and will not be described in detail here.

[0019] The working principle of this embodiment:

[0020] The utility model adopts parallel flow splitting, the main pipeline of the mold temperature controller 1 is connected with the inlet and outlet water of each heating roller 2 in a parallel manner to split the medium.

[0021] The infrared temperature probe 7 realizes non-contact temperature measurement and detects the real temperature of the surface of the heating roller 2 in real time. The controller adjusts the solenoid valve 5 and the induction coil according to the temperature measurement result of the infrared temperature probe 7. When the temperature balance heat exchange of the roller surface can be satisfied, the solenoid valve 5 is 100% open. When the temperature exceeds the set value, the water flow is reduced by controlling the solenoid valve 5 to reduce the temperature of the heating roller 2 and reduce energy waste. When the heating power of the mold temperature controller 1 is insufficient or the temperature of a single roller is not enough, the induction coil independently supplements the temperature of a single heating roller 2 to ensure drying uniformity, realize independent temperature closed-loop control of each heating roller 2, and can monitor and accurately adjust the temperature in real time, effectively reduce the risk of temperature exceeding the set value, improve the efficiency and product quality of the lithium battery diaphragm drying process, and significantly improve the controllability and stability of the production process, meeting the requirements of modern industrial production for high efficiency, high precision and intelligence.

Claims

1. A drying roller assembly device, characterized in that: It includes a mold temperature controller and at least two heating rollers. The mold temperature controller outlet is connected to the inlet of each heating roller through a pipeline. The outlet of any heating roller is connected to the return port of the mold temperature controller through a pipeline. A solenoid valve and a heating device are respectively arranged on the pipeline at the inlet of any heating roller. An infrared temperature measuring probe is respectively arranged on the outer side of any heating roller. The signal output end of the infrared temperature measuring probe, the control end of the solenoid valve and the control end of the heating device are all connected to a controller.

2. A drying roller assembly according to claim 1, characterized in that: The heating device is an induction coil.

3. A drying roller assembly according to claim 2, characterized in that: Heat preservation cotton is arranged between the induction coil and the pipeline at the inlet of the heating roller.

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