CN219618449U - Precise temperature control white oil preheating device - Google Patents

Abstract

The utility model discloses a white oil preheating device with precise temperature control, which comprises a mold temperature machine, wherein a stirring kettle is connected to the mold temperature machine, a kettle body of the stirring kettle is provided with a jacket, an insulating layer is arranged outside the jacket, a stirring paddle is arranged in the stirring kettle, a stirring motor for driving the stirring paddle to rotate is arranged at the top of the stirring kettle, a feed inlet and a discharge outlet are arranged at the bottom of the stirring kettle, an overflow outlet is arranged at the upper part of the stirring kettle, the overflow outlet is flush with the highest liquid level of the stirring kettle, circulating pipelines are respectively connected between the overflow outlet and an inlet of the mold temperature machine and between the feed inlet and an outlet of the mold temperature machine, a discharge pipeline is connected to the discharge outlet, an oil injection pump is arranged on the discharge pipeline, an outlet of the oil injection pump is connected with a white oil preheating station through a pipeline, and an outlet of the white oil preheating station is used for being connected with an extruder screw. The utility model adopts a repeated circulation heating mode, can effectively improve the accurate temperature control capability of the white oil, and ensures that the white oil is uniformly heated, thereby ensuring the mixing extrusion effect of raw materials and improving the product quality.

Description

Precise temperature control white oil preheating device

Technical Field

The utility model relates to a white oil preheating device with precise temperature control, and belongs to the technical field of white oil preheating equipment in lithium battery diaphragm production.

Background

White oil is an important production raw material in the production of lithium battery diaphragms, and the white oil needs to be preheated by a mold temperature machine and injected by an oil injection pump in the extrusion process. When the white oil in the petroleum tank is preheated by the mold temperature machine, the problem of uneven heating exists in the preheating process due to the fact that the amount of the white oil in the white oil tank area is large; in addition, the problem of heat loss exists in the white oil conveying process, the temperature control precision of the mold temperature machine is low, and the difference between the actual temperature of the preheated white oil and the set value is larger than 1 ℃. Therefore, the temperature of the white oil preheated by the mold temperature machine cannot normally reach the set value required by production, so that the temperature of the filled white oil is abnormal, the mixing effect is poor, and the quality of the diaphragm is affected.

Disclosure of Invention

The utility model aims to provide a white oil preheating device with precise temperature control, which is used for solving the technical problems that a die temperature machine in the prior art is not uniformly heated and cannot precisely control the temperature during preheating.

The utility model adopts the following technical scheme: the utility model provides a white oil preheating device of accurate accuse temperature, includes the mould temperature machine, be connected with the stirred tank on the mould temperature machine, be equipped with the stirring rake in the stirred tank, the stirred tank top is equipped with the stirring motor that drives stirring rake pivoted, the bottom of stirred tank is equipped with feed inlet and discharge gate, and the upper portion of stirred tank is equipped with the overflow mouth, and the overflow mouth flushes with the highest liquid level of stirred tank, is connected with the circulation pipeline respectively between overflow mouth and the mould temperature machine import, is connected with the discharge pipeline on the discharge gate, is equipped with the oil injection pump on the discharge pipeline, and the export of oil injection pump has the white oil preheating station through the pipe connection, and the export of white oil preheating station is used for being connected with the extruder screw rod; the two stirring kettles and the two die temperature machines are respectively connected through circulating pipelines, the two stirring kettles are connected in parallel, and the reheating pipeline is connected in parallel on the discharging pipeline of the second stirring kettles and is communicated with the first stirring kettles.

And the reheating pipeline is provided with a pneumatic diaphragm pump and a filter.

And the reheating pipeline is connected with a circulating heating pipeline which is led into the second stirring kettle.

The two oil injection pumps are arranged in parallel between the discharge pipeline and the white oil preheating station.

The stirring paddle is an anchor stirring paddle.

The rotating speed of the stirring motor is 0-50 rpm.

The kettle body of the stirring kettle is provided with a jacket, and an insulating layer is arranged outside the jacket.

The heat preservation layer is aluminum silicate rock wool, and a 201 stainless steel wrapping plate is arranged outside the heat preservation layer.

The inner wall of the kettle body of the stirring kettle is 6 mm thick, the wall thickness of the jacket of the stirring kettle is 3 mm, and the volume of the stirring kettle is 2000L.

The kettle body and the jacket of the stirring kettle are made of SUS304 stainless steel.

The beneficial effects of the utility model are as follows: when the device is used, the white oil is preheated by using the mold temperature machine, and the white oil is mechanically stirred by using the stirring kettle, so that the white oil is uniformly preheated, the upper Fang Baiyou part of the stirring kettle enters the mold temperature machine from the overflow port and is circularly heated by the mold temperature machine, finally the heated white oil is discharged from the discharge port at the bottom of the stirring kettle, is conveyed to the white oil preheating station by the oil injection pump, is secondarily heated by using the white oil preheating station, and the white oil after the secondary heating reaches the required temperature value and enters the screw of the extruder. According to the utility model, two groups of mold temperature machines and stirring kettles are arranged, when the second group of mold temperature machines and the stirring kettles are not ideal in heating and cannot meet the requirement or the using amount of white oil is large, the white oil in the second stirring kettle can be discharged from a discharge hole and enters the first stirring kettle through a reheating pipeline, and the first mold temperature machine is used for carrying out cyclic heating, so that the heating is more precise, and the precise temperature control capability of the white oil is further improved. The utility model adopts a repeated circulation heating mode, can effectively improve the accurate temperature control capability of the white oil, and ensures that the white oil is uniformly heated, thereby ensuring the mixing extrusion effect of raw materials and improving the product quality.

Preferably, the white oil is conveyed by the pneumatic diaphragm pump, and the filter is used for filtering the white oil, so that the quality of the white oil is improved.

Preferably, white oil in the second stirring kettle can be discharged from the discharge port and is led into the second stirring kettle again through the circulating heating pipeline, and the white oil is heated by the second mold temperature machine.

Preferably, the jacket and the heat insulation layer on the stirring kettle insulate the white oil, so that heat loss is reduced, and heating efficiency is improved.

Drawings

FIG. 1 is a schematic diagram of a precisely temperature controlled white oil preheating device according to an embodiment of the present utility model;

FIG. 2 is a schematic illustration of the stirred tank of FIG. 1;

fig. 3 is a schematic diagram of the white oil preheating station of fig. 1.

In the figure: 1-stirred tank, 11-jacket, 12-heat preservation, 13-stirring paddle, 14-stirring motor, 15-feed inlet, 16-discharge outlet, 17-overflow outlet, 18-liquid level meter, 2-mould temperature machine, 21-circulation pipeline, 3-oil injection pump, 4-white oil preheating station, 5-extruder screw, 6-discharge pipeline, 7-reheating pipeline, 71-pneumatic diaphragm pump, 72-filter, 8-circulation heating pipeline.

Detailed Description

The utility model will now be described in detail with reference to the drawings and specific examples.

As shown in fig. 1 to 2, the precise temperature-control white oil preheating device in an embodiment of the utility model comprises a mold temperature machine 2, wherein a stirring kettle 1 is connected to the mold temperature machine 2, the volume of the stirring kettle 1 is 2000L, a kettle body 1 of the stirring kettle 1 is provided with a jacket 11, the inner wall of the kettle body of the stirring kettle 1 is 6 mm thick, the wall thickness of the jacket 11 of the stirring kettle is 3 mm, and the kettle body and the jacket 11 of the stirring kettle are both made of SUS304 stainless steel. The outside of the jacket 11 is provided with an insulating layer 12, the insulating layer is aluminum silicate rock wool, and a 201 stainless steel cladding plate is arranged outside the insulating layer. Be equipped with stirring rake 13 in the stirred tank 1, stirring rake 13 is anchor stirring rake, and stirring tank 1 top is equipped with drives stirring rake 13 pivoted agitator motor 14, agitator motor 14's rotational speed is 0~50rpm.

The bottom of stirred tank 1 is equipped with feed inlet 15 and discharge gate 16, and stirred tank 1's upper portion is equipped with overflow mouth 17, is equipped with liquid level gauge 18 on the stirred tank, and overflow mouth 17 flushes with stirred tank's the highest liquid level, is connected with circulation pipeline 21 respectively between overflow mouth 17 and the mould temperature machine import, between feed inlet 15 and the mould temperature machine export, is connected with row material pipeline 6 on the discharge gate 16, is equipped with oil injection pump 3 on the row material pipeline 6, and the export of oil injection pump 3 has white oil preheating station 4 through the pipe connection, and the export of white oil preheating station 4 is used for being connected with extruder screw 5. In this embodiment, there are two oil injection pumps 3, and the two oil injection pumps 3 are arranged in parallel between the discharge pipeline 6 and the white oil preheating station 4.

In this embodiment, the two stirring kettles 1 and the two mold temperature machines 2 are respectively connected through a circulation pipeline 21, the two stirring kettles are connected in parallel through a discharge pipeline 6, and the second stirring kettles are connected in parallel with a reheating pipeline 7, wherein the reheating pipeline 7 is communicated with the first stirring kettles. The reheating pipe 7 is provided with an air-operated diaphragm pump 71 and a filter 72. The reheating pipe 7 is connected with a circulating heating pipe 8 which is led into the second stirring kettle.

When the precisely temperature-controlled white oil preheating device of the embodiment works, external white oil is injected into a second stirring kettle (a stirring kettle positioned on the right side in fig. 1), a second mold temperature machine (a mold temperature machine positioned on the right side in fig. 1) indirectly preheats the white oil in the second stirring kettle in a mode of heating heat conduction oil, and stirring paddles in the second stirring kettle rotate to improve the heated uniformity of the white oil. When the liquid level of the first stirring kettle (the stirring kettle positioned at the left side in fig. 1) is low, the second stirring kettle is fed to the first stirring kettle, and oil injection is stopped when the liquid level reaches a high level. The first stirring paddle stirs the mixed white oil, and the first mold temperature machine (the stirring kettle positioned at the left side in fig. 1) preheats the white oil in the first stirring kettle. After the actual temperature of the first mold temperature machine reaches a set value, the white oil of the first stirring kettle is sent to a white oil preheating station by an oil injection pump to be preheated again, so that the temperature deviation value of the white oil supplied to the extrusion section can be ensured to be less than 1 ℃.

The white oil preheating station 4 adopts a preheating station in the prior art, the system principle of which is shown in fig. 3, and the working principle of the white oil preheating station 4 is as follows: 1) The heating power of the two paths of white oil ways is 24KW and 12KW respectively, and the total power of the equipment is 40KW. 2) Three specifications of stainless steel shell heat exchangers 6m, 2.5m, 1m and 2 m respectively: the white oil with different temperature requirements is preheated simultaneously by two paths. 3) Inlet white oil temperature of white oil preheating station: 80-110 ℃; the outlet temperature is 100-130 ℃; the temperature fluctuation range of the export white oil is less than or equal to +/-1 ℃. 4) The flow rate of the circulating pump is as follows: 10m steps of seeding; pump outlet pressure: 0.25-0.35 MPa. 5) The cooling heat exchanger adopts a shell-and-tube cooler, cooling water is controlled by a proportional valve, the pressure of the cooling water is 0.4Mpa (withstand voltage is more than or equal to 0.8 Mpa), and the flow is 6 m/h. The white oil preheating station heats the white oil for a plurality of times through a plurality of heat exchangers, and the white oil achieves a high-precision temperature control effect through a plurality of heat exchange processes, so that the heating is very uniform.

The foregoing embodiments and description have been provided for the purpose of illustrating the principles of the present utility model and are subject to various changes and modifications without departing from the spirit and scope of the utility model as hereinafter claimed.

Claims (10)

1. The utility model provides a white oil preheating device of accurate accuse temperature, includes mould temperature machine, its characterized in that: the stirring kettle is connected with a stirring kettle, a stirring paddle is arranged in the stirring kettle, a stirring motor for driving the stirring paddle to rotate is arranged at the top of the stirring kettle, a feed inlet and a discharge outlet are arranged at the bottom of the stirring kettle, an overflow outlet is arranged at the upper part of the stirring kettle, the overflow outlet is flush with the highest liquid level of the stirring kettle, circulating pipelines are respectively connected between the overflow outlet and the inlet of the mold temperature machine and between the feed inlet and the outlet of the mold temperature machine, a discharge pipeline is connected on the discharge outlet, an oil injection pump is arranged on the discharge pipeline, an outlet of the oil injection pump is connected with a white oil preheating station through a pipeline, and an outlet of the white oil preheating station is used for being connected with an extruder screw; the two stirring kettles and the two die temperature machines are respectively connected through circulating pipelines, the two stirring kettles are connected in parallel, and the reheating pipeline is connected in parallel on the discharging pipeline of the second stirring kettles and is communicated with the first stirring kettles.

2. The precisely controlled temperature white oil preheating device according to claim 1, wherein: and the reheating pipeline is provided with a pneumatic diaphragm pump and a filter.

3. The precisely controlled temperature white oil preheating device according to claim 1, wherein: and the reheating pipeline is connected with a circulating heating pipeline which is led into the second stirring kettle.

4. The precisely controlled temperature white oil preheating device according to claim 1, wherein: the two oil injection pumps are arranged in parallel between the discharge pipeline and the white oil preheating station.

5. The precisely controlled temperature white oil preheating device according to claim 1, wherein: the stirring paddle is an anchor stirring paddle.

6. The precisely controlled temperature white oil preheating device according to claim 1, wherein: the rotating speed of the stirring motor is 0-50 rpm.

7. The precisely controlled temperature white oil preheating device according to claim 1, wherein: the kettle body of the stirring kettle is provided with a jacket, and an insulating layer is arranged outside the jacket.

8. The precisely controlled temperature white oil preheating device as set forth in claim 7, wherein: the heat preservation layer is aluminum silicate rock wool, and a 201 stainless steel wrapping plate is arranged outside the heat preservation layer.

9. The precisely controlled temperature white oil preheating device as set forth in claim 7, wherein: the inner wall of the kettle body of the stirring kettle is 6 mm thick, the wall thickness of the jacket of the stirring kettle is 3 mm, and the volume of the stirring kettle is 2000L.

10. The precisely controlled temperature white oil preheating device as set forth in claim 7, wherein: the kettle body and the jacket of the stirring kettle are made of SUS304 stainless steel.