NMP (N-Methyl Pyrrolidone) solution pretreatment device

Abstract

The embodiment of the utility model provides an NMP (N-Methyl Pyrrolidone) solution pretreatment device which comprises a thermostatic bath, a constant-temperature tank, a constant-temperature tank, a constant-temperature tank, a constant-temperature tank, a constant-temperature tank, a constant-temperature tank, a constant-temperature tank, a constant-temperature tank, a constant-temperature tank, a constant-temperature tank and a constant-temperature tank, one end of the online flow meter is connected with one end of the coil pipe; one end of the NMP solution flow meter is connected with one end of the online flow meter through a connecting pipe; a discharging pipe is mounted at one end of the NMP solution flow meter, and a valve is mounted at the end part of the discharging pipe. According to the NMP solution pretreatment device, constant-temperature cooling treatment is provided for the solution through the constant-temperature bath, the online flow meter and the NMP solution flow meter are used for flow detection, the valve is matched to control the flow of the solution, and a constant-temperature and constant-flow NMP solution can be provided for analysis and research.

Description

Technical Field

[0001] This application relates to the fields of lithium batteries and electronic technologies, and particularly to a pretreatment device for NMP solution. Background Art

[0002] NMP solution is often used as an electrode auxiliary material for lithium-ion batteries; it can also be used in photoresist stripping solution, LCD liquid crystal material production, and cleaning of precision instruments and circuit boards in the semiconductor industry.

[0003] In the electronics industry and the field of lithium batteries, when analyzing the influence of NMP solution at different concentrations on products, during the research and experimental process, by controlling variables, the temperature and flow rate of the NMP solution are made constant to study the influence of this single variable of different concentrations of NMP solution on the experiment; however, in the current existing technologies, there is a lack of a pretreatment device that continuously provides constant temperature cooling and quantitative flow control for the solution. Therefore, a pretreatment device for NMP solution is proposed. Utility Model Content

[0004] The technical problem to be solved by the embodiments of this application is to provide a pretreatment device for NMP solution, which provides constant temperature cooling treatment for the solution through a constant temperature bath, uses an in-line flowmeter and an NMP solution flowmeter for flow detection, and cooperates with a valve to control the solution flow rate, and can provide a constant temperature and constant flow rate of NMP solution for analysis and research. It solves the problem that it is not easy to make the temperature and flow rate of the NMP solution constant when studying and analyzing the influence of different concentrations of NMP solution on products in the existing technologies.

[0005] To solve the above technical problem, the embodiments of this application propose a pretreatment device for NMP solution, including:

[0006] A box body, which has an accommodating space;

[0007] A constant temperature bath, in which a coiled pipe is arranged, one end of the coiled pipe is equipped with a feed pipe, and a valve is installed at the end of the feed pipe;

[0008] An in-line flowmeter, one end of which is connected to one end of the coiled pipe;

[0009] An NMP solution flowmeter, one end of which is connected to one end of the in-line flowmeter through a connecting pipe; a discharge pipe is installed at one end of the NMP solution flowmeter, and a valve is installed at the end of the discharge pipe;

[0010] An air purging mechanism, the air blowing port of which extends into the interior of the box body.

[0011] Further, the air purging mechanism is a blower with a filter.

[0012] Further, an air flow meter is installed at the air blowing port of the air purging mechanism.

[0013] Further, it further includes a cooling main unit, and the cooling main unit is connected to the constant temperature bath.

[0014] Further, the box body is sequentially provided with a first placement area, a second placement area, and a third placement area from top to bottom; the in-line flow meter and the NMP solution flow meter are installed in the first placement area, the constant temperature bath is installed in the second placement area, and the cooling main unit is installed in the third placement area.

[0015] Further, heat dissipation holes are formed in the side wall of the box body, and the heat dissipation holes communicate with the third placement area.

[0016] Further, a plurality of casters and feet are provided at the bottom of the box body.

[0017] In the embodiment of the present application, by proposing an NMP solution pretreatment device, through the constant temperature bath and the coil pipe, constant temperature cooling treatment is provided for the passing solution. The in-line flow meter and the NMP solution flow meter are used for flow detection, and the valve is cooperated to control the solution flow rate, so as to provide a constant temperature and constant flow rate NMP solution for analysis and research. It can continuously perform constant temperature and constant flow rate treatment. After the solution passes through, the treatment can be realized, ensuring that the research is not interrupted;

[0018] At the same time, through the design of the air purging mechanism, a positive pressure is formed inside the whole device to prevent dust from entering the device and ensure the cleanliness inside the device. Description of the Drawings

[0019] Figure 1 is the overall structural schematic diagram of the embodiment of the present application;

[0020] Figure 2 is the internal structural schematic diagram of the embodiment of the present application.

[0021]

Description of the Reference Numerals

[0022] In the figure: 1. Box body; 101. First placement area; 102. Second placement area; 103. Third placement area; 1031. Heat dissipation hole; 2. Caster; 3. Foot; 4. Constant temperature bath; 401. Coil pipe; 5. In-line flow meter; 6. NMP solution flow meter; 7. Air flow meter; 8. Air purging mechanism; 9. Connecting pipe; 10. Feed pipe; 11. Discharge pipe; 12. Valve. Detailed Embodiment

[0023] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following further describes the present application in detail with reference to the drawings and specific embodiments.

[0024] In the embodiments of the present application, if there are directional indications such as up, down, left, right, front, back... they are only used to explain the relative positional relationship and movement conditions between components in a specific posture as shown in the drawings. If the specific posture changes, the directional indications will also change accordingly.

[0025] In addition, in the present application, the descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0026] Please refer to Figure 1-2 , an NMP solution pretreatment device is provided in the embodiments of the present application, which includes a box body 1, a constant temperature bath 4, an in-line flowmeter 5, and an NMP solution flowmeter 6. The box body 1 has an accommodation space. A coil 401 is arranged in the constant temperature bath 4. One end of the coil 401 is installed with a feed pipe 10, and a valve 12 is installed at the end of the feed pipe 10. One end of the in-line flowmeter 5 is connected to one end of the coil 401. One end of the NMP solution flowmeter 6 is connected to one end of the in-line flowmeter 5 through a connecting pipe 9. One end of the NMP solution flowmeter 6 is installed with a discharge pipe 11, and a valve 12 is installed at the end of the discharge pipe 11.

[0027] During specific implementation, water is filled in the constant temperature bath 4, and the water temperature in the constant temperature bath 4 is constant. After the solution enters the coil 401 through the feed pipe 10, heat exchange is carried out, and the temperature of the NMP solution is cooled by the cooling water to a constant value.

[0028] The solution enters the in-line flowmeter 5 for flow monitoring, and further enters the NMP solution flowmeter 6 for flow monitoring again. The valve 12 is used to control the solution flow. The valve 12 is an electric control valve 12, which can make the solution flow constant. The in-line flowmeter 5, the NMP solution flowmeter 6, and the valve 12 are all connected to an external control system. Detection feedback data is provided by the in-line flowmeter 5 and the NMP solution flowmeter 6 to automatically control the opening size of the two valves 12.

[0029] After the solution temperature and flow are constant, it is discharged through the discharge pipe 11.

[0030] Furthermore, a mechanical flow meter is arranged on the outer wall of the box body 1. The mechanical flow meter is installed in the middle of the connecting pipe 9, so that the real-time flow of NMP can be directly observed, and compared with the data of the in-line flowmeter 5 for calibration and compensation to ensure the stability and reliability of the measurement data.

[0031] Furthermore, the constant temperature bath 4, the in-line flowmeter 5, and the NMP solution flowmeter 6 are all arranged inside the box body 1; an air purging mechanism 8, and the air outlet of the air purging mechanism 8 extends into the box body 1. The air purging mechanism 8 is a blower with a filter, and an air flowmeter 7 is installed at the air outlet of the air purging mechanism 8. By continuously providing a blowing air flow inside the box body 1, and the air flow is filtered through the filter to make it dust-free; a positive pressure is formed inside the entire device to prevent dust from entering the device and ensure the cleanliness inside the device.

[0032] The pretreatment device of the present disclosure embodiment further includes a cooling host, and the cooling host is connected to the constant temperature bath 4. The cooling host uses a fan in cooperation with a radiator and a water pump. The water pump continuously sucks the water in the constant temperature bath 4, enters the radiator, and then flows back to the constant temperature bath 4. The fan continuously provides blowing air for the radiator to dissipate heat. A temperature sensor is arranged in the constant temperature bath 4, and the temperature sensor and the entire cooling host are connected to an external control system. Through real-time sensing by the temperature sensor, feedback is provided to control the air volume of the fan, so that the constant temperature bath 4 maintains a constant temperature.

[0033] The box body 1 is sequentially provided with a first placement area 101, a second placement area 102, and a third placement area 103 from top to bottom; the in-line flowmeter 5 and the NMP solution flowmeter 6 are installed in the first placement area 101, the constant temperature bath 4 is installed in the second placement area 102, and the cooling host is installed in the third placement area 103. By dividing the area inside the box body 1, the internal levels are clear, which is convenient for maintenance.

[0034] Heat dissipation holes 1031 are formed in the side wall of the box body 1, and the heat dissipation holes 1031 communicate with the third placement area 103; the heat dissipation holes 1031 are convenient for heat dissipation and exhaust.

[0035] A plurality of casters 2 and feet 3 are arranged at the bottom of the box body 1 for bottom support and movement.

[0036] Although the embodiments of the present application have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalent scope.

Claims

1. An NMP solution pretreatment device, characterized in that, Comprising: A box body, which has an accommodation space; A constant temperature bath, which is arranged inside the box body. A coil pipe is arranged inside the constant temperature bath. One end of the coil pipe is installed with a feed pipe, and a valve is installed at the end of the feed pipe; An in-line flowmeter, one end of which is connected to one end of the coil pipe; An NMP solution flowmeter, one end of which is connected to one end of the in-line flowmeter through a connecting pipe; one end of the NMP solution flowmeter is installed with a discharge pipe, and a valve is installed at the end of the discharge pipe; An air purging mechanism, the air blowing port of which extends into the interior of the box body.

2. The NMP solution pretreatment device according to claim 1, characterized in that, The air purging mechanism is a blower with a filter.

3. The pretreatment device for NMP solution according to claim 1, wherein, An air flowmeter is installed at the air blowing port of the air purging mechanism.

4. A pretreatment device for NMP solution according to claim 1, wherein It further includes a cooling main unit, which is connected to the constant temperature bath.

5. The pretreatment device for NMP solution according to claim 4, wherein, The box body is sequentially provided with a first placement area, a second placement area, and a third placement area from top to bottom; the in-line flowmeter and the NMP solution flowmeter are installed in the first placement area, the constant temperature bath is installed in the second placement area, and the cooling main unit is installed in the third placement area.

6. The pretreatment device for NMP solution according to claim 5, characterized in that, Heat dissipation holes are formed in the side wall of the box body, and the heat dissipation holes communicate with the third placement area.

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