CN219111472U

CN219111472U - Powder pneumatic mixing system

Info

Publication number: CN219111472U
Application number: CN202223324492.9U
Authority: CN
Inventors: 张常元; 余敬英
Original assignee: Dongguan Taiyan Automation Technology Co ltd
Current assignee: Dongguan Taiyan Automation Technology Co ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-06-02
Anticipated expiration: 2032-12-12

Abstract

The utility model relates to the technical field of production of negative powder materials, in particular to a powder pneumatic mixing system, which comprises a homogenization tank, wherein a transmitting tank is fixedly arranged at the left lower part of the homogenization tank through a supporting frame, a first powder suction hopper and a second powder suction hopper are respectively and fixedly arranged at the two sides of the top surface of the homogenization tank, a mounting plate is fixedly arranged on the outer wall of the middle part of the homogenization tank, a Roots blower and a pulse filter are respectively and fixedly arranged at the right side of the top surface of the mounting plate, and the powder pneumatic mixing system integrates the functions of mixing, homogenizing and storing, can meet the requirements of mass efficient mixing and homogenizing of special powder materials such as negative materials of lithium batteries, and has the advantages of high efficiency, good effect, low energy consumption, low dust pollution, low flying loss and the like; the system has no mechanical stirring collision, can reduce the mechanical damage to powder crystals in the mixing homogenization process, and meets the characteristic requirement of lithium battery cathode materials.

Description

Powder pneumatic mixing system

Technical Field

The utility model relates to the technical field of production of negative electrode powder materials, in particular to a powder pneumatic mixing system.

Background

In powder production, multiple kinds of powder are uniformly mixed together according to a certain proportion or different batches of powder are uniformly mixed to ensure that chemical components are uniform and other indexes are consistent, the production is called mixing or homogenizing, the lithium battery anode material is conductive micron-sized powder, the requirements on consistency of performance indexes and stability of product quality are very high, and in order to eliminate fluctuation of the performance indexes and stabilize the product quality, homogenization equipment is required to be used for homogenizing the product.

At present, powder homogenization generally adopts a gravity homogenization method, a pneumatic homogenization method or a mechanical homogenization method, the mechanical homogenization is divided into two types, namely a container rotation type and a stirring type, the container rotation is to load materials into a container, the materials roll in the container to realize homogenization when the container rotates, the stirring type drives the materials to move relatively through a mechanical stirring device arranged in a fixed container, so that the materials are homogenized, the stirring type mixing homogenization equipment is reliable in use and good in homogenization effect, however, because the container volume of the conventional stirring type mixing homogenization equipment is smaller, the homogenization amount is smaller each time, when the materials are required to be processed in batches, the batch homogenization can not be realized, and moreover, the powder crystals are easily damaged due to mechanical stirring when the machine is used for stirring, so that the characteristic requirements of lithium battery cathode materials can not be met. For this purpose, we propose a powder pneumatic mixing system.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a powder pneumatic mixing system which can meet the requirements of mass efficient mixing and homogenization of special powder materials such as lithium battery cathode materials after improvement, has the advantages of high efficiency, good effect, low energy consumption, small dust pollution and flying loss and the like, does not have mechanical stirring collision in the system, can reduce the mechanical damage to powder crystals in the mixing and homogenization process, and meets the characteristic requirements of the lithium battery cathode materials.

The technical scheme of the utility model is as follows:

powder strength hybrid system, its characterized in that: the device comprises a homogenizing tank, a transmitting tank is fixedly arranged at the left lower part of the homogenizing tank through a supporting frame, a positive pressure feeding pipe is connected to the bottom of the transmitting tank through a tee joint, a positive pressure feeding bin is connected to the other end of the positive pressure feeding pipe, the positive pressure feeding bin is fixedly arranged on the top surface of the homogenizing tank and is communicated with the homogenizing tank through a pipeline, a first powder suction hopper and a second powder suction hopper are respectively and fixedly arranged on two sides of the top surface of the homogenizing tank, the first powder suction hopper and the second powder suction hopper are fixedly connected with the bottom of the homogenizing tank through powder internal circulating pipes, a mounting plate is fixedly arranged on the outer wall of the middle of the homogenizing tank, a Roots blower and a pulse filter are respectively and fixedly arranged on the right side of the top surface of the mounting plate, an exhaust port of the Roots blower is fixedly connected with the pulse filter through a pipeline, and a wind port of the pulse filter is respectively and fixedly connected with the first powder suction hopper and the second powder suction hopper through a negative pressure pipe.

Further, the homogenization tank is fixedly installed on the ground through a mounting frame.

Further, the bottom of the transmitting pot is connected with an external pressure station through a three-way connecting air inlet pipe.

Further, the top of the transmitting pot is fixedly connected with an external storage bin through a feeding pipe.

Further, one wind port of the pulse filter is connected with an external pressure station through an air inlet pipe.

Further, a vibrating motor is fixedly arranged at the bottom of the homogenizing tank.

Furthermore, the homogenization tank is arranged in a structure that a round bin body is connected with a conical bin bottom.

The beneficial effects of the utility model are as follows:

(1) The powder pneumatic mixing system integrates the functions of mixing, homogenizing and storing, can meet the requirements of mass efficient mixing and homogenizing of special powder materials such as lithium battery cathode materials, and has the advantages of high efficiency, good effect, low energy consumption, small dust pollution and flying loss and the like;

(2) According to the powder pneumatic mixing system, mechanical stirring collision does not exist in the system, so that mechanical damage to powder crystals in the mixing homogenization process can be reduced, and the characteristic requirement of a lithium battery cathode material is met.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

In the figure, 1, a homogenization tank; 2. a support frame; 3. a launch canister; 4. positive pressure feeding pipe; 5. feeding the material in a bin under positive pressure; 6. a first powder suction hopper; 7. a second powder suction hopper; 8. a powder internal circulation pipe; 9. a mounting plate; 10. roots blower; 11. a pulse filter; 12. a negative pressure pipe; 13. a vibration motor.

Detailed Description

The following is a further description of embodiments of the utility model, taken in conjunction with the accompanying drawings:

as shown in fig. 1, the powder pneumatic mixing system comprises a homogenization tank 1, a launch canister 3 is fixedly installed at the left lower side of the homogenization tank 1 through a support frame 2, a positive pressure feeding pipe 4 is connected to the bottom of the launch canister 3 through a tee joint, a positive pressure feeding bin 5 is connected to the other end of the positive pressure feeding pipe 4, the positive pressure feeding bin 5 is fixedly installed on the top surface of the homogenization tank 1, the bottom of the positive pressure feeding bin 5 is communicated with the homogenization tank 1 through a pipeline, a first powder suction hopper 6 and a second powder suction hopper 7 are fixedly installed on two sides of the top surface of the homogenization tank 1 respectively, the first powder suction hopper 6 and the second powder suction hopper 7 are fixedly connected with the bottom of the homogenization tank 1 through a powder internal circulation pipe 8, a mounting plate 9 is fixedly installed on the outer wall of the middle of the homogenization tank 1, a Roots blower 10 and a pulse filter 11 are fixedly installed on the right side of the top surface of the mounting plate 9 respectively, an exhaust port of the Roots blower 10 is fixedly connected with the pulse filter 11 through a pipeline, and an air port of the pulse filter 11 is fixedly connected with the first powder suction hopper 6 and the second powder suction hopper 7 through a negative pressure pipe 12 respectively.

The homogenization tank 1 is fixedly installed on the ground through a mounting frame. By being provided with a mounting frame, the homogenization tank 1 can be fixedly arranged.

The bottom of the transmitting pot 3 is connected with an air inlet pipe through a tee joint so as to be connected with an external pressure station. It can be understood that one end of the tee bend is connected with the positive pressure material loading pipe 4, and the tee bend other end is connected with the intake pipe, and the intake pipe is connected with outside pressure station again, through the pressure station, can be to the inside compressed air of input of emission jar 3, increases the inside pressure of emission jar 3 for the powder of emission jar 3 inside can the positive pressure material loading be carried.

The top of the transmitting pot 3 is fixedly connected with an external storage bin through a feeding pipe. The powder can be timely supplied to the inside of the launch canister 3.

One of the air ports of the pulse filter 11 is connected to an external pressure station via an air inlet pipe. It can be understood that compressed air can be input into the pulse filter 11 through the external pressure station, and the compressed air enters the first powder suction hopper 6 and the second powder suction hopper 7 along the negative pressure pipe 12 respectively to perform back blowing operation, so that the back blowing gas can be effectively blown onto the powder, the original negative pressure instantly reaches positive pressure to form a small explosion state, the powder rolls along with the airflow, and the powder is effectively mixed and homogenized in the process.

The bottom of the homogenization tank 1 is fixedly provided with a vibration motor 13. It can be appreciated that by being provided with the vibration motor 13, the powder is effectively prevented from being pressed and hardened when being piled up at a certain height by high-frequency vibration.

The homogenization tank 1 is arranged in a structure that a circular bin body is connected with a conical bin bottom. The purpose of this design is: the powder flows and homogenizes in the cone, so that the homogenization and mixing effects are further improved.

The working principle of the utility model is as follows: firstly, an external pressure station is started to convey compressed air into the launching tank 3, the pressure in the launching tank 3 is increased, so that powder in the launching tank 3 can be positively conveyed along a positive pressure feeding pipe 4, the powder enters the inside of a homogenization tank 1 through a positive pressure feeding bin 5, then, a Roots blower 10 is started to vacuumize a first powder suction hopper 6 and a second powder suction hopper 7, negative pressure is formed in the powder suction hopper 6 and the second powder suction hopper 7 respectively, at the moment, powder at the bottom in the homogenization tank 1 enters the inside of the first powder suction hopper 6 and the second powder suction hopper 7 respectively along a powder internal circulation pipe 8, when a certain amount is extracted, the Roots blower 10 stops working, is changed into the external pressure station, compressed air is input into a pulse filter 11, and the compressed air enters the inside of the first powder suction hopper 6 and the inside of the second powder suction hopper 7 respectively along a negative pressure pipe 12, so that the negative pressure in the first powder suction hopper 6 and the second powder suction hopper 7 is instantly changed into positive pressure, a small explosion state is formed, the powder is suddenly rolled along with air flow, the powder is uniformly mixed in the powder suction hopper, the powder suction hopper is continuously pumped into the powder suction hopper 1 again, and the powder is continuously sucked into the air suction hopper 1 in the air after the pressure homogenizing tank is continuously circulated, and the powder suction hopper is continuously sucked into the powder suction hopper 1.

The foregoing embodiments and description have been provided merely to illustrate the principles and best modes of carrying out the utility model, and various changes and modifications can be made therein without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. Powder strength hybrid system, its characterized in that: the device comprises a homogenization tank (1), a transmission tank (3) is fixedly arranged at the left lower part of the homogenization tank (1) through a supporting frame (2), a positive pressure feeding pipe (4) is connected to the bottom of the transmission tank (3) through a tee joint, a positive pressure feeding bin (5) is connected to the other end of the positive pressure feeding pipe (4), the positive pressure feeding bin (5) is fixedly arranged at the top surface of the homogenization tank (1) and the bottom of the positive pressure feeding bin (5) is communicated with the homogenization tank (1) through a pipeline, a first powder suction hopper (6) and a second powder suction hopper (7) are fixedly arranged at the two sides of the top surface of the homogenization tank (1), the first powder suction hopper (6) and the second powder suction hopper (7) are fixedly connected with the bottom of the homogenization tank (1) through a powder internal circulation pipe (8), a mounting plate (9) is fixedly arranged on the outer wall of the middle part of the homogenization tank (1), a Roots blower (10) and a pulse filter (11) are fixedly arranged at the right side of the top surface of the mounting plate (9) respectively, and the Roots blower (10) and the pulse filter (11) are fixedly connected with the pulse filter (12) through a suction hopper (12) and the pulse filter (12).

2. The powder pneumatic mixing system according to claim 1, wherein: the homogenizing tank (1) is fixedly arranged on the ground through a mounting frame.

3. The powder pneumatic mixing system according to claim 2, wherein: the bottom of the transmitting pot (3) is connected with an air inlet pipe through a tee joint so as to be connected with an external pressure station.

4. A powder pneumatic mixing system as claimed in claim 3, wherein: the top of the transmitting pot (3) is fixedly connected with an external storage bin through a feeding pipe.

5. The powder pneumatic mixing system according to claim 4, wherein: one of the air ports of the pulse filter (11) is connected with an external pressure station through an air inlet pipe.

6. The powder pneumatic mixing system of claim 5, wherein: the bottom of the homogenization tank (1) is fixedly provided with a vibration motor (13).

7. The powder pneumatic mixing system of claim 6, wherein: the homogenization tank (1) is arranged in a conical bin bottom structure connected with the circular bin body.