Auxiliary blanking device for raw materials of positive electrode materials

Abstract

The utility model discloses an auxiliary blanking device for raw materials of a positive electrode material. The auxiliary blanking device comprises a blanking mechanism and an air supply device, a metering device is arranged at a feeding port of the discharging mechanism, and a plurality of gas filling ports are formed in the peripheral side of a discharging port of the discharging mechanism. The output end of the metering device is connected with a feeding port of the discharging mechanism. The plurality of air-entrapping ports are correspondingly arranged on the peripheral side of the discharge port and form included angles with the side wall of the discharge port, and the air-entrapping ports are provided with air supply devices. The metering device is arranged at the feeding port of the discharging mechanism, and accurate metering is carried out; the air adding hole is formed in the discharging port of the discharging mechanism, the air adding hole is connected with the air supply device, the compressed airflow is provided for the discharging port through the air supply device, the problems of material accumulation and material hanging on the wall in the discharging mechanism and the discharging port of the discharging mechanism are avoided, the discharging amount of the discharging mechanism is matched with the feeding amount, and therefore the metering accuracy is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery preparation technical field, concretely is a kind of positive electrode material raw material auxiliary unloading device. BACKGROUND

[0002] When lithium iron phosphate / lithium manganese iron phosphate is prepared by solid phase method, the raw materials such as lithium carbonate, iron phosphate and glucose required are needed to enter the temporary storage warehouse through the feeding port, the temporary storage warehouse enters the metering bin according to the feeding ratio, and after metering by the metering bin, it is discharged to the homogenizing tank, and in the prior art, the metering bin usually adopts spiral conveyor to discharge into the homogenizing tank. The defects of this method are that: the homogenizing tank uses pure water to stir material with high humidity, which easily causes material sticking in the spiral conveyor, affects the accuracy of metering, cannot accurately discharge according to the process ratio, and easily produces unqualified products and affects the consistency between product batches. INVENTION CONTENTS

[0003] Therefore, the application provides a positive electrode material raw material auxiliary unloading device to solve the problem of material accumulation and wall hanging in the spiral conveyor caused by high humidity of the homogenizing tank, which affects the accuracy of unloading metering, and the specific scheme is as follows:

[0004] A positive electrode material raw material auxiliary unloading device, comprising a discharging mechanism and a gas supply device;

[0005] The feeding port of the discharging mechanism is provided with a metering device, and the periphery of the discharge port of the discharging mechanism is provided with a plurality of gas inlet ports, and the discharge port of the discharging mechanism is connected with the feeding port of the homogenizing tank.

[0006] The output end of the metering device is connected with the feeding port of the discharging mechanism.

[0007] A plurality of gas inlet ports are correspondingly arranged on the periphery of the discharge port and are arranged at an angle with the side wall of the discharge port, and the gas inlet ports are connected with the gas supply device.

[0008] Preferably, the gas flow provided by the gas supply device is compressed air.

[0009] Preferably, the discharging mechanism is a spiral conveyor.

[0010] Preferably, the gas source pressure provided by the gas supply device is determined according to the discharging speed of the spiral conveyor.

[0011] Preferably, the angle formed by the gas inlet port and the side wall of the feeding port is the same as the angle between the thread on the screw rod and the screw rod in the spiral conveying device.

[0012] Preferably, a gas nozzle is arranged at the gas inlet port.

[0013] The gas nozzle is installed at the gas inlet, the output end of the gas nozzle is connected with the gas inlet through a hose, and the input end of the gas nozzle is connected with the output end of the gas supply device.

[0014] Compared with the prior art, the application has the beneficial effects that:

[0015] The application accurately measures by arranging the metering device at the feeding port of the discharging mechanism, provides compressed air flow to the discharge port through the gas supply device connected with the gas inlet, and solves the problems of material accumulation and wall sticking in the discharging mechanism and the discharge port due to the existence of the air flow, so that the discharge amount of the discharging mechanism matches the feeding amount, thereby improving the accuracy of measurement; meanwhile, the existence of the air flow during the discharging process of the discharging mechanism solves the problems of material accumulation and sticking caused by high humidity in the discharging mechanism, thereby improving the flowability of the material. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 A structure schematic view of an auxiliary discharging device for a positive electrode material raw material is provided in the embodiment;

[0017] Fig. 2 A structure schematic view of the gas inlet and the discharge port of the screw conveyor is provided in the embodiment;

[0018] In the figure: 1, screw conveyor; 2, gas inlet; 3, metering device; 4, homogenizing tank; 5, motor; 6, stirring device; 7, compressed air hose; 8, gas nozzle. DETAILED DESCRIPTION

[0019] An auxiliary discharging device for a positive electrode material raw material includes a discharging mechanism and a gas supply device;

[0020] The feeding port of the discharging mechanism is provided with a metering device, the peripheral side of the discharge port of the discharging mechanism is provided with a plurality of gas inlets, and the discharge port of the discharging mechanism is connected with the feeding port of the homogenizing tank;

[0021] The output end of the metering device is connected with the feeding port of the discharging mechanism;

[0022] A plurality of gas inlets are correspondingly arranged on the peripheral side of the discharge port and are arranged at an angle with the side wall of the discharge port, and the gas inlets are provided with a gas supply device.

[0023] Further, the discharging mechanism is a screw conveyor

[0024] Further, the gas source pressure provided by the gas supply device is determined according to the discharging speed of the screw conveyor.

[0025] Further, the included angle formed by the air inlet and the side wall of the feeding port is the same as the included angle of the thread on the screw rod and the screw rod in the screw conveyor.

[0026] Further, the air inlet is provided with an air nozzle.

[0027] The air nozzle is installed at the air inlet, the output end of the air nozzle is connected with the air inlet through a hose, and the input end of the air nozzle is connected with the output end of the air supply device.

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0029] Embodiments

[0030] Please refer to Figs. 1-2 The utility model provides a positive electrode material raw material auxiliary unloading device includes homogenizer 4, screw conveyor 1, stirring device 6 and measuring device 3.

[0031] The measuring device is installed at the feeding port of the screw conveyor, the feeding port of the measuring device is arranged upwards, and the measuring device as a whole is in a conical structure, facilitating unloading.

[0032] The stirring device is installed above the homogenizer, the stirring rod in the stirring device extends into the homogenizer for stirring.

[0033] The screw conveyor is horizontally arranged at the top of the homogenizer, the feeding port of the screw conveyor is arranged upwards, the discharging port of the screw conveyor is arranged towards the feeding port of the homogenizer, and the screw conveyor is driven by the motor 5.

[0034] The four sides of the discharging port of the screw conveyor are respectively provided with air inlets, and the air inlets are respectively connected with the air supply device, so that the four side surfaces of the feeding port can be blown by air flow, avoiding wall hanging dead angle. The air flow provided by the air supply device is blown into the discharging port through the air inlets, and the air inlets are arranged at an included angle with the side wall of the discharging port, so that the entering air flow is blown to the side wall of the discharging port, thereby avoiding the wall hanging phenomenon of the side wall of the discharging port of the screw conveyor and the problem of material accumulation in the discharging port, so that the amount of material entering the screw conveyor per unit time is the same as the amount of material flowing out of the screw conveyor, avoiding the problem of inaccurate unloading caused by the error of the feeding and discharging of the screw conveyor, thereby improving the accuracy of measurement.

[0035] Meanwhile, the air flow from the air inlet into the screw conveyor solves the problem of high humidity in the screw conveyor, avoids material sticking in the screw conveyor, and improves material flow.

[0036] In this embodiment, the air source provided by the air supply device is compressed air, and the air supply device passes the air flow into the screw conveyor 1 through the air nozzle 8. The air nozzle 8 is installed at the air inlet 2, and the input end of the air nozzle 8 is connected with the air supply device through the compressed air hose 7.

[0037] In this embodiment, the side wall of the discharge port of the screw conveyor is in a slope structure, and the air inlet is an air hole with an angle of 45° with the slope surface, so as to match the angle between the thread in the threaded rod and the screw rod in the screw conveyor, so that the air flow entering from the air inlet can better blow into the discharge port of the screw conveyor, and the discharge port of the screw conveyor is dried to avoid walling in the inside.

[0038] In this embodiment, combined with the discharge speed of the screw conveyor, the air nozzle sprays compressed air (dew point -50) at 0.4Mpa to dry the material during production, which can isolate the water vapor in the homogeneous tank, avoid the material from walling, improve the accuracy of metering, and avoid unnecessary resistance to the discharge.

Claims

1. A positive electrode material raw material auxiliary blanking device, characterized by, The device comprises a feeding mechanism and a gas supply device; The feeding port of the feeding mechanism is provided with a metering device, and the periphery of the discharge port of the feeding mechanism is provided with a plurality of gas injection ports, and the discharge port of the feeding mechanism is connected with the feeding port of the equalizing tank; The output end of the metering device is connected with the feeding port of the feeding mechanism; The plurality of gas injection ports are correspondingly arranged on the periphery of the discharge port and are arranged at an angle with the side wall of the discharge port, and the gas injection ports are connected with the gas supply device.

2. The positive electrode material raw material auxiliary blanking device according to claim 1, characterized in that, The gas flow provided by the gas supply device is compressed air.

3. The positive electrode material raw material auxiliary blanking device according to claim 1, characterized in that, The feeding mechanism is a screw conveyor.

4. The positive electrode material raw material auxiliary blanking device according to claim 3, characterized in that, The gas source pressure provided by the gas supply device is determined according to the feeding speed of the screw conveyor.

5. The positive electrode material raw material auxiliary blanking device according to claim 1, characterized in that, The angle formed by the gas injection port and the side wall of the feeding port is the same as the angle of the thread on the screw rod and the screw rod in the screw conveying device.

6. The positive electrode material raw material auxiliary blanking device according to claim 1, characterized in that, A gas nozzle is arranged at the gas injection port; The gas nozzle is mounted at the gas injection port, the output end of the gas nozzle is connected with the gas injection port through a hose, and the input end of the gas nozzle is connected with the output end of the gas supply device.

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