CN221637941U - Raw material batching system for lithium iron phosphate production - Google Patents

Abstract

The embodiment of the present application discloses a raw material batching system for lithium iron phosphate production, including: a feeding station, a rotary iron remover, a material bin, a discharge valve, a metering bin, a screw feeder, a premixing tank, and a first homogenizing pump. The feeding station includes a funnel-shaped feeding end, a vibration motor is arranged on the side wall of the feeding end of the feeding station, the discharging end of the feeding station is connected to the feeding end of the rotary iron remover; the discharging end of the rotary iron remover is connected to the feeding end of the material bin; the material bin is a hollow structure, the discharging end of the material bin is connected to the feeding end of the discharge valve, and the discharging end of the discharge valve is connected to the feeding end of the metering bin; a weighing sensor and a first stirring device are arranged in the metering bin, and the discharging end of the metering bin is connected to the feeding end of the screw feeder; the discharging end of the screw feeder is connected to the feeding end of the premixing tank, a second stirring device and a pure water input end are arranged in the premixing tank, the discharging end of the premixing tank is connected to the feeding end of the first homogenizing pump, and the discharging end of the first homogenizing pump is connected to the feeding end of the premixing tank.

Description

Raw material batching system for lithium iron phosphate production

Technical Field

The present application relates to the technical field of raw material batching, and in particular to a raw material batching system for lithium iron phosphate production.

Background Art

With the rapid development of the electric vehicle market, the demand for efficient and environmentally friendly battery materials is also growing. As one of the key materials, the production process of lithium iron phosphate has strict requirements on the quality of raw materials and the accuracy of the proportion. In order to meet this demand, it is particularly important to develop a system that can automatically and accurately batch and ensure the quality of raw materials.

Summary of the invention

The purpose of the present application is to provide a raw material batching system for lithium iron phosphate production, so as to solve the problem in the prior art that there is a lack of a system that can automatically and accurately batch and ensure the quality of raw materials.

To achieve the above-mentioned purpose, the embodiment of the present application provides a raw material batching system for lithium iron phosphate production, including: a feeding station, a rotary iron remover, a material bin, a discharge valve, a metering bin, a screw feeder, a premixing tank, and a first homogenizing pump, wherein:

The feeding station comprises a funnel-shaped feeding end, a vibration motor is arranged on the side wall of the feeding end of the feeding station, and a discharge end of the feeding station is connected to the feeding end of the rotary iron remover;

The rotary iron remover is provided with a magnetic core composed of a strong magnetic rod and a variable frequency speed regulating motor, and the discharge end of the rotary iron remover is connected to the feed end of the material bin;

The material bin is a hollow structure, the material bin discharge end is connected to the discharge valve feed end, and the discharge valve discharge end is connected to the metering bin feed end;

The metering bin is provided with a weighing sensor and a first stirring device, the first stirring device comprises a first motor, a first rotating shaft and a spiral blade arranged on the lower end of the first rotating shaft, the first motor is arranged above the metering bin, one end of the first rotating shaft is connected to the first motor, and the other end passes through the upper end surface of the metering bin and extends into the metering bin, the raw materials in the metering bin are stirred by the spiral blade, and the discharge end of the metering bin is connected to the feed end of the screw feeder;

The discharge end of the screw feeder is connected to the feed end of the premixing tank, a second stirring device and a pure water input end are provided in the premixing tank, the discharge end of the premixing tank is connected to the feed end of the first homogenizing pump, and the discharge end of the first homogenizing pump is connected to the feed end of the premixing tank to form a loop.

Optionally, it also includes:

Ton bags are used to feed raw materials into the feeding end of the feeding station, and a valve is provided at the discharge port below the ton bag.

Optionally, it also includes:

The first dust collector is arranged at the upper end of the material bin and is used to separate the dust in the material bin.

Optionally, it also includes:

The second dust collector is arranged at the upper end of the metering bin and is used to separate the dust in the metering bin.

Optionally, the second stirring device specifically includes a high-speed stirrer and a low-speed stirrer, the high-speed stirrer includes a second motor, a second rotating shaft and blades arranged on the second rotating shaft, the second motor is arranged above the premixing tank, one end of the second rotating shaft is connected to the second motor, and the other end passes through the upper end surface of the premixing tank and extends into the premixing tank, and the raw materials in the premixing tank are stirred by the blades;

The low-speed agitator includes a third motor, a third rotating shaft and a strip blade arranged at the lower end of the third rotating shaft. The third motor is arranged above the premixing tank. One end of the third rotating shaft is connected to the third motor, and the other end passes through the upper end surface of the premixing tank and extends into the premixing tank. The raw materials in the premixing tank are stirred by the strip blade located below the third rotating shaft of the high-speed agitator.

Optionally, it also includes:

A pure water pump, wherein the output end of the pure water pump is connected to the pure water input end of the premixing tank, and a mass flow meter is provided on the pipeline between the output end of the pure water pump and the pure water input end of the premixing tank.

Optionally, it further comprises: a homogenizing tank and a second homogenizing pump, wherein:

The input end of the homogenizing tank is connected to the output end of the first homogenizing pump, the output end of the homogenizing tank is connected to the input end of the second homogenizing pump, and the output end of the second homogenizing pump is connected to the input end of the homogenizing tank.

Optionally, a manual knife valve is provided on the pipeline between the material bin and the discharge valve;

A pneumatic knife valve is provided on the pipeline between the screw feeder and the premixing tank;

A manual butterfly valve is provided on one side of the input end of the mass flow meter on the pipeline between the pure water pump and the premixing tank, and a pneumatic regulating valve is provided on one side of the output end;

A manual butterfly valve and a pneumatic butterfly valve are provided on the pipelines between the output end of the premixing tank and the input end of the first homogenizing pump and between the input end of the premixing tank and the output end of the first homogenizing pump.

Optionally, a manual butterfly valve and a pneumatic butterfly valve are provided on the pipeline between the input end of the homogenizing tank and the output end of the first homogenizing pump;

A manual butterfly valve and a pneumatic butterfly valve are provided on the pipelines between the output end of the homogenizing tank and the input end of the second homogenizing pump and between the input end of the homogenizing tank and the output end of the second homogenizing pump.

Optionally, there are three sets of raw material conveying lines including the feeding station, rotary iron remover, material bin, discharge valve, metering bin and screw feeder, all of which are used to convey raw materials for lithium iron phosphate production to the input end of the premixing tank.

The embodiments of the present application have the following advantages:

The embodiment of the present application provides a raw material batching system for lithium iron phosphate production, including: a feeding station, a rotary iron remover, a material bin, a discharge valve, a metering bin, a screw feeder, a premixing tank, and a first homogenizing pump, wherein the feeding station includes a funnel-shaped feeding end, the side wall of the feeding end of the feeding station is provided with a vibration motor, and the discharge end of the feeding station is connected to the feeding end of the rotary iron remover; the rotary iron remover is provided with a magnetic core composed of a strong magnetic rod and a variable frequency speed regulating motor, and the discharge end of the rotary iron remover is connected to the feeding end of the material bin; the material bin is a hollow structure, the discharge end of the material bin is connected to the feeding end of the discharge valve, and the discharge end of the discharge valve is connected to the feeding end of the metering bin; the metering bin is provided with a There are a weighing sensor and a first stirring device, which includes a first motor, a first rotating shaft and a spiral blade arranged on the lower end of the first rotating shaft. The first motor is arranged above the metering bin, one end of the first rotating shaft is connected to the first motor, and the other end passes through the upper end surface of the metering bin and extends into the metering bin. The raw materials in the metering bin are stirred by the spiral blades, and the discharge end of the metering bin is connected to the feed end of the spiral feeder; the discharge end of the spiral feeder is connected to the feed end of the premixing tank, and a second stirring device and a pure water input end are arranged in the premixing tank, the discharge end of the premixing tank is connected to the feed end of the first homogenizing pump, and the discharge end of the first homogenizing pump is connected to the feed end of the premixing tank to form a loop.

Compared with the prior art, the present application provides a raw material batching system for lithium iron phosphate production, which realizes the efficient acquisition of raw materials and the removal of iron impurities through the vibration function of the feeding station and the magnetic effect of the rotating iron remover; the combination of the screw feeder, the premixing tank and the homogenizing pump ensures the quantitative loading, uniform stirring and efficient transmission of the automated raw materials, ensures the high uniformity and consistency of the raw materials, thereby improving the quality of the final product.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

FIG1 is a schematic structural diagram of a raw material batching system for lithium iron phosphate production provided by one embodiment of the present application;

FIG2 is a schematic diagram of the structure of a feeding station of a raw material batching system for lithium iron phosphate production provided by one embodiment of the present application;

FIG3 is a schematic diagram of a ton bag structure of a raw material batching system for lithium iron phosphate production provided by an embodiment of the present application;

FIG4 is a schematic diagram of a material bin structure of a raw material batching system for lithium iron phosphate production provided by an embodiment of the present application;

FIG5 is a schematic diagram of a metering bin structure of a raw material batching system for lithium iron phosphate production provided by an embodiment of the present application;

FIG6 is a schematic diagram of the structure of a premixing tank of a raw material batching system for lithium iron phosphate production provided in one embodiment of the present application.

DETAILED DESCRIPTION

The following is a description of the implementation of the present application by specific embodiments. People familiar with the technology can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Unless otherwise clearly specified and limited, the terms "set", "install", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

An embodiment of the present application provides a raw material batching system for lithium iron phosphate production, referring to FIG1 , comprising:

Feeding station 2, rotary iron remover 3, material bin 4, discharge valve 5, metering bin 6, screw feeder 7, premixing tank 8, first homogenizing pump 9, including:

The feeding station 2 includes a funnel-shaped feeding end, a vibration motor 21 is provided on the side wall of the feeding end of the feeding station 2, and the discharging end of the feeding station 2 is connected to the feeding end of the rotary iron remover 3;

Referring to Figure 2, specifically, a vibration motor 21 is provided inside the feeding station 2 to generate regular vibration to ensure that the raw materials flow out of the ton bag 1 smoothly to avoid blockage. The discharge end of the feeding station 2 is equipped with a widened pipe, which can quickly and evenly deliver the raw materials to the rotary iron remover 3. The outer shell of the feeding station 2 adopts a closed design to reduce dust flying during the transmission of the raw materials.

Referring to FIG3 , in some embodiments, it further comprises: a ton bag 1, wherein the ton bag 1 is used to feed raw materials into the feeding end of the feeding station 2, and a valve is provided at the discharge port below the ton bag 1;

Specifically, the ton bag 1 is made of wear-resistant and tear-resistant high-strength polyester fiber to ensure that it will not be damaged during storage and transportation. A quick discharge valve is provided at the bottom of the ton bag 1, which works closely with the feeding station 2 to achieve rapid delivery of raw materials.

The rotating iron remover 3 is provided with a magnetic core composed of a strong magnetic rod and a variable frequency speed regulating motor, and the discharge end of the rotating iron remover 3 is connected to the feed end of the material bin 4;

Specifically, the rotary iron remover 3 is equipped with multiple groups of high magnetic magnets. When the raw material passes through, the iron impurities therein are quickly adsorbed. The rotary iron remover 3 is driven by a variable frequency speed regulating motor and can adjust the rotation speed in real time according to the flow rate of the raw material to ensure the best iron removal effect.

Referring to FIG4 , the material bin 4 is a hollow structure, the discharge end of the material bin 4 is connected to the feed end of the discharge valve 5 , and the discharge end of the discharge valve 5 is connected to the feed end of the metering bin 6 ;

In some embodiments, the material bin 4 adopts a cylindrical structure to ensure that the raw materials are evenly distributed therein. A sealing cover is provided on the top of the material bin 4 to prevent external impurities from entering. A transparent observation window is provided on the side wall of the material bin 4 to facilitate observation of the state of the raw materials in the bin. The discharge valve 5 adopts a pneumatic control method to achieve quantitative discharge of the raw materials by adjusting the air pressure. The outlet of the discharge valve 5 is tightly connected to the inlet of the metering bin 6 to ensure that the raw materials will not leak during the transmission process.

In some embodiments, it further includes: a first dust collector 41 , which is disposed at the upper end of the material bin 4 and is used to separate dust in the material bin 4 .

Referring to FIG5 , a weighing sensor and a first stirring device are provided in the metering bin 6. The first stirring device includes a first motor 61, a first rotating shaft 62, and a spiral blade 63 provided on the lower end of the first rotating shaft 62. The first motor 61 is provided above the metering bin 6. One end of the first rotating shaft 62 is connected to the first motor 61, and the other end passes through the upper end surface of the metering bin 6 and extends into the metering bin 6. The raw materials in the metering bin 6 are stirred by the spiral blade 63. The discharge end of the metering bin 6 is connected to the feed end of the screw feeder 7.

Specifically, a high-precision weighing sensor is provided inside the metering bin 6 to monitor the weight of the raw materials in real time. The metering bin 6 is provided with a stirring device to achieve uniform stirring of the raw materials through motor drive;

In some embodiments, it also includes: a second dust collector 64, which is arranged at the upper end of the metering bin 6 and is used to separate the dust in the metering bin 6.

Referring to FIG6 , the discharge end of the screw feeder 7 is connected to the feed end of the premixing tank 8, a second stirring device and a pure water input end are provided in the premixing tank 8, the discharge end of the premixing tank 8 is connected to the feed end of the first homogenizing pump 9, and the discharge end of the first homogenizing pump 9 is connected to the feed end of the premixing tank 8 to form a loop;

Specifically, the screw feeder 7 adopts a spiral blade design, which can realize efficient and uniform conveying of raw materials. The conveying speed of the screw feeder 7 is adjustable and can be adjusted in real time according to production needs;

A pure water input port is provided at the top of the premixing tank 8, which can be connected to a pure water pump to achieve automatic addition of pure water;

A loop design is adopted between the premixing tank 8 and the first homogenizing pump 9, so that the raw materials in the premixing tank 8 are further processed and mixed under the action of the first homogenizing pump 9. This loop design ensures that the raw materials achieve a high degree of consistency and uniformity after passing through the homogenizing pump.

In some embodiments, a mass flow meter is provided on the pipeline between the output end of the pure water pump and the pure water input end of the premixing tank 8 .

In some embodiments, the second stirring device specifically includes a high-speed stirrer and a low-speed stirrer, the high-speed stirrer includes a second motor 81, a second rotating shaft 82 and a blade 83 arranged on the second rotating shaft, the second motor 81 is arranged above the premixing tank 8, one end of the second rotating shaft 82 is connected to the second motor 81, and the other end passes through the upper end surface of the premixing tank 8 and extends into the premixing tank 8, and the raw materials in the premixing tank 8 are stirred by the blades;

The low-speed agitator includes a third motor 84, a third rotating shaft 85 and a strip blade 86 arranged at the lower end of the third rotating shaft 85. The third motor 84 is arranged above the premixing tank 8. One end of the third rotating shaft 85 is connected to the third motor 84, and the other end passes through the upper end surface of the premixing tank 8 and extends into the premixing tank 8. The raw materials in the premixing tank 8 are stirred by the strip blade 86 located below the third rotating shaft 85 of the high-speed agitator.

In some embodiments, it also includes: a homogenizing tank 10 and a second homogenizing pump 11, wherein the input end of the homogenizing tank 10 is connected to the output end of the first homogenizing pump 9, the output end of the homogenizing tank 10 is connected to the input end of the second homogenizing pump 11, and the output end of the second homogenizing pump 11 is connected to the input end of the homogenizing tank 10.

Specifically, after the loop composed of the premixing tank 8 and the first homogenizing pump 9 processes the raw material, the valve between the output end of the first homogenizing pump 9 and the input end of the homogenizing tank 10 is opened to allow the raw material to enter the homogenizing tank 10 and to be processed in the loop between the homogenizing tank 10 and the second homogenizing pump 11. Through the two-stage premixing and homogenizing process, the high uniformity and consistency of the raw material are ensured, thereby improving the quality of the final product. The homogenizing tank 10 has a similar structure to the premixing tank 8, and both include a stirring device.

Referring to FIG1 , in some embodiments, a manual knife valve is provided on the pipeline between the material bin 4 and the discharge valve 5;

A pneumatic knife valve is provided on the pipeline between the screw feeder 7 and the premixing tank 8;

A manual butterfly valve is provided on one side of the input end of the mass flow meter on the pipeline between the pure water pump and the premixing tank 8, and a pneumatic regulating valve is provided on one side of the output end;

A manual butterfly valve and a pneumatic butterfly valve are provided on the pipeline between the output end of the premixing tank 8 and the input end of the first homogenizing pump 9 and between the input end of the premixing tank 8 and the output end of the first homogenizing pump 9;

A manual butterfly valve and a pneumatic butterfly valve are provided on the pipeline between the input end of the homogenizing tank 10 and the output end of the first homogenizing pump 9;

Manual butterfly valves and pneumatic butterfly valves are provided on the pipelines between the output end of the homogenizing tank 10 and the input end of the second homogenizing pump 11 and between the input end of the homogenizing tank 10 and the output end of the second homogenizing pump 11.

With reference to FIG1 , in some embodiments, the raw material batching system for lithium iron phosphate production provided in the present application includes three sets of raw material conveying lines including the feeding station 2, the rotary iron remover 3, the material bin 4, the discharge valve 5, the metering bin 6 and the screw feeder 7, all of which are used to convey raw materials for lithium iron phosphate production to the input end of the premixing tank 8. The premixing tank 8 also has at least 3 raw material input ends. In some embodiments, the output end of the second homogenizing pump 11 is connected to the grinding system through a pneumatic butterfly valve to convey the batched raw materials to the grinding system for grinding.

In summary, compared with the existing technology:

1. Through the vibration function of the feeding station 2 and the magnetic effect of the rotary iron remover 3, efficient acquisition of raw materials and removal of iron impurities are achieved.

2. The dust collectors of the material bin 4 and the metering bin 6 ensure fresh air in the bins and avoid the impact of dust on the production environment.

3. The combination of the screw feeder 7, the premixing tank 8 and the homogenizing pump ensures quantitative loading, uniform mixing and efficient transmission of the raw materials.

4. Through two-stage premixing and homogenization treatment, the high uniformity and consistency of raw materials are ensured, thus improving the quality of the final product.

Note that, unless otherwise directly stated, all features disclosed in this specification (including any attached claims, abstracts and drawings) may be replaced by alternative features for achieving the same, equivalent or similar purposes. Therefore, unless otherwise explicitly stated, each feature disclosed is only an example of a group of equivalent or similar features. Where used, further, preferably, further and more preferably are simple beginnings for elaborating another embodiment based on the aforementioned embodiment, and the content of the further, preferably, further or more preferably followed by the combination with the aforementioned embodiment constitutes a complete construction of another embodiment. Several further, preferably, further or more preferably settings following the same embodiment can be arbitrarily combined to form another embodiment.

In the implementation of functions and steps, the corresponding functions and steps in various embodiments may also occur in a different order than shown. For example, two consecutive functions and steps may actually be performed or implemented substantially in parallel, and they may sometimes be performed or implemented in the opposite order, depending on the functions involved.

Although the present application has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements may be made to the present application. Therefore, these modifications or improvements made without departing from the spirit of the present application all fall within the scope of protection claimed in the present application.

Claims (10)

1. Raw material batching system for lithium iron phosphate production, characterized by comprising: a feeding station, a rotary iron remover, a material bin, a discharge valve, a metering bin, a spiral feeder, a premixing tank and a first homogenizing pump, wherein,

The feeding station comprises a funnel-shaped feeding end, a vibrating motor is arranged on the side wall of the feeding end of the feeding station, and the discharging end of the feeding station is connected with the feeding end of the rotary iron remover;

The rotary iron remover is internally provided with a magnetic core consisting of a strong magnetic rod and a variable-frequency speed regulating motor, and the discharge end of the rotary iron remover is connected with the feed end of the material bin;

The material bin is of a hollow structure, the discharge end of the material bin is connected with the feed end of the discharge valve, and the discharge end of the discharge valve is connected with the feed end of the metering bin;

The weighing sensor and the first stirring device are arranged in the metering bin, the first stirring device comprises a first motor, a first rotating shaft and a spiral blade arranged at the lower end of the first rotating shaft, the first motor is arranged above the metering bin, one end of the first rotating shaft is connected with the first motor, the other end of the first rotating shaft penetrates through the upper end face of the metering bin to extend into the metering bin, raw materials in the metering bin are stirred through the spiral blade, and the discharge end of the metering bin is connected with the feed end of the spiral feeder;

The spiral feeder discharge end is connected with the premix tank feed end, a second stirring device and a pure water input end are arranged in the premix tank, the premix tank discharge end is connected with the first homogenizing pump feed end, and the first homogenizing pump discharge end is connected with the premix tank feed end to form a loop.

2. The raw material proportioning system for producing lithium iron phosphate according to claim 1, further comprising:

and the ton bag is used for throwing raw materials into a feeding end of the feeding station, and a valve is arranged at a discharging hole below the ton bag.

3. The raw material proportioning system for producing lithium iron phosphate according to claim 1, further comprising:

The first dust remover is arranged at the upper end of the material bin and is used for separating dust in the material bin.

4. The raw material proportioning system for producing lithium iron phosphate according to claim 1, further comprising:

The second dust remover is arranged at the upper end of the metering bin and is used for separating dust in the metering bin.

5. The raw material proportioning system for producing lithium iron phosphate according to claim 1, wherein,

The second stirring device specifically comprises a high-speed stirrer and a low-speed stirrer, the high-speed stirrer comprises a second motor, a second rotating shaft and blades arranged on the second rotating shaft, the second motor is arranged above the premixing tank, one end of the second rotating shaft is connected with the second motor, the other end of the second rotating shaft penetrates through the upper end face of the premixing tank and extends into the premixing tank, and raw materials in the premixing tank are stirred through the blades;

The low-speed stirrer comprises a third motor, a third rotating shaft and strip-shaped blades arranged at the lower end of the third rotating shaft, the third motor is arranged above the premixing tank, one end of the third rotating shaft is connected with the third motor, the other end of the third rotating shaft penetrates through the upper end face of the premixing tank and extends into the premixing tank, and raw materials in the premixing tank are stirred through the strip-shaped blades arranged below the third rotating shaft of the high-speed stirrer.

6. The raw material proportioning system for producing lithium iron phosphate according to claim 1, further comprising:

the pure water pump, the output of pure water pump is connected the pure water input of premix jar, the pure water pump the output with be equipped with mass flowmeter on the pipeline between the pure water input of premix jar.

7. The raw material proportioning system for producing lithium iron phosphate according to claim 1, further comprising: a homogenizing tank and a second homogenizing pump, wherein,

The input end of the homogenizing tank is connected with the output end of the first homogenizing pump, the output end of the homogenizing tank is connected with the input end of the second homogenizing pump, and the output end of the second homogenizing pump is connected with the input end of the homogenizing tank.

8. The raw material proportioning system for producing lithium iron phosphate according to claim 6, wherein,

A manual knife valve is arranged on a pipeline between the material bin and the discharge valve;

a pneumatic knife valve is arranged on a pipeline between the spiral feeder and the premixing tank;

A manual butterfly valve is arranged on one side of the input end of the mass flowmeter on a pipeline between the pure water pump and the premixing tank, and a pneumatic regulating valve is arranged on one side of the output end of the mass flowmeter;

And manual butterfly valves and pneumatic butterfly valves are arranged on pipelines between the output end of the premixing tank and the input end of the first homogenizing pump and between the input end of the premixing tank and the output end of the first homogenizing pump.

9. The raw material proportioning system for producing lithium iron phosphate according to claim 7, wherein,

A manual butterfly valve and a pneumatic butterfly valve are arranged on a pipeline between the input end of the homogenizing tank and the output end of the first homogenizing pump;

And manual butterfly valves and pneumatic butterfly valves are arranged on pipelines between the output end of the homogenizing tank and the input end of the second homogenizing pump and between the input end of the homogenizing tank and the output end of the second homogenizing pump.

10. The raw material proportioning system for producing lithium iron phosphate according to claim 1, wherein,

The material conveying line comprises three sets of material feeding stations, a rotary iron remover, a material bin, a discharge valve, a metering bin and a spiral feeder, and the three sets of material conveying lines are all used for conveying raw materials for lithium iron phosphate production to the input end of the premixing tank.