Pulverizer return air control system

Abstract

The utility model provides a pulverizer return air control system which comprises a main device, a pulse dust collector, a material pipeline, a return air pipeline, an air supply pipeline and an induced draft fan, and the main device is connected with the pulse dust collector through the material pipeline; the pulse dust collector is connected with the induced draft fan through an air return pipeline; the induced draft fan is connected with the main equipment through the air supply pipeline to form a closed-loop system, an air valve and an air filter are mounted on the air return pipeline, and a medium efficiency filter is mounted on the air supply pipeline. The monitoring device solves the problem of monitoring the air speed, the temperature, the humidity and the pressure of the air return pipeline in the operation of the crushing equipment, prevents the internal humidity of the air return pipeline from being too high, prevents metal foreign matters generated by internal abrasion of the air return pipeline from being introduced into the equipment, reduces the risk that new energy anode materials are polluted by the metal foreign matters in the production process, and improves the product quality.

Description

Technical Field

[0001] The utility model relates to a return air control system for a pulverizer, belonging to the technical field of return air control systems. Background Art

[0002] In traditional battery production workshops, the environment or equipment must be ventilated and dried to maintain air circulation in the production workshop. It is also necessary to control the debris and some metal foreign matter generated during the production process to prevent affecting the quality of battery products. At the same time, there are certain requirements for factors such as temperature and humidity in the production workshop. Therefore, in order to simultaneously meet the control of dust removal, return air, temperature and humidity, battery production workshops are generally equipped with dust removal and return air systems.

[0003] The traditional return air system can only adjust the air circulation speed inside the equipment through the fan, and cannot meet the product's demand for return air drying of the equipment. In the production of battery technology, when the humidity inside the equipment is too high and the material absorbs enough water, the gas generated will also increase, and the pressure inside the battery will increase, causing the battery to deform under stress, resulting in risks such as battery bulging and leakage. Therefore, for positive electrode materials, the environment and humidity must be strictly controlled during the production, storage and battery preparation of raw materials in order to produce high-performance lithium-ion batteries. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model proposes a pulverizer return air control system, which solves the problem of monitoring the wind speed, temperature, humidity and pressure of the return air duct during the operation of the pulverizing equipment, avoids high humidity inside the return air duct, prevents metal foreign matter generated by wear inside the return air duct from being introduced into the equipment, reduces the risk of new energy positive electrode materials being contaminated by metal foreign matter during the production process, and improves product quality.

[0005] The technical solution of the utility model: a pulverizer return air control system, comprising a main device, a pulse dust collector, a material pipeline, a return air duct, an air supply duct and an induced draft fan, the main device is connected to the pulse dust collector via the material pipeline; the pulse dust collector is connected to the induced draft fan via the return air duct; the induced draft fan is connected to the main device via the air supply duct to form a closed-loop system, an air valve and an air filter are installed on the return air duct, and a medium-efficiency filter is installed on the air supply duct.

[0006] Furthermore, a condenser is installed on the air supply duct.

[0007] Furthermore, a pressure relief valve is installed on the air supply duct.

[0008] Furthermore, an air velocity flow meter, a temperature and humidity sensor, and a pressure transmitter are respectively installed on the air supply duct near the main equipment.

[0009] Furthermore, a compressed air intake pipe is fixedly connected to the air supply duct, and the compressed air intake pipe is fixedly connected to an air source.

[0010] Furthermore, a muffler is installed on the air supply duct near the induced draft fan.

[0011] Furthermore, the three instruments, namely the air velocity flow meter, the temperature and humidity sensor and the pressure transmitter, are fixedly connected to the air supply duct by means of threaded connection.

[0012] Due to the adoption of the above technical solution, the utility model has the following advantages:

[0013] ① The utility model solves the problem of monitoring the wind speed, temperature, humidity and pressure of the return air duct during the operation of the pulverizing equipment, avoids high humidity inside the return air duct, prevents metal foreign matter caused by wear inside the return air duct from being introduced into the equipment, reduces the risk of new energy positive electrode materials being contaminated by metal foreign matter during the production process, and improves product quality;

[0014] ② The return air duct of the utility model is designed with a two-stage filter, which can filter out pulse dust and large particles of foreign matter generated by the operation of the fan, thereby improving product quality;

[0015] ③ The three instruments of the utility model, namely, the air velocity flow meter, the temperature and humidity sensor and the pressure transmitter, are fixedly connected to the air supply duct by means of threaded connection, and have the advantages of simple installation, convenient use, and convenient repair and maintenance. The return air duct fracture is connected with a soft connection to ensure convenient repair, maintenance and disassembly of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the connection structure of the utility model.

[0017] Explanation of the reference numerals: 1-main equipment; 2-air velocity flow meter; 3-temperature and humidity sensor; 4-pressure transmitter; 5-medium efficiency filter; 6-air source; 7-compressed air inlet pipe; 8-pulse dust collector; 9-air valve; 10-condenser; 11-pressure relief valve; 12-air filter; 13-silencer; 14-induced draft fan; 15-material pipeline; 16-return air duct; 17-supply air duct. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model is further described in detail below with reference to the accompanying drawings and embodiments.

[0019] Example

[0020] See also Figure 1A pulverizer return air control system of the present embodiment includes a main device 1, a pulse dust collector 8, a material pipeline 15, a return air pipeline 16, an air supply pipeline 17 and an induced draft fan 14. The main device 1 is connected to the pulse dust collector 8 via the material pipeline 15; the pulse dust collector 8 is connected to the induced draft fan 14 via the return air pipeline 16; the induced draft fan 14 is connected to the main device 1 via the air supply pipeline 17 to form a closed-loop system. An air valve 9 and an air filter 12 are installed on the return air pipeline 16, which can effectively control the return air volume and inhibit the material generated inside the pulse dust collector 8 from entering the induced draft fan 14, entering the condenser 10 through the induced draft fan 14, and causing blockage to the condenser 10; a medium efficiency filter 5 is installed on the air supply pipeline 17, and the medium efficiency filter 5 is used to filter the metal foreign matter generated inside the induced draft fan 14 to prevent it from entering the main device 1 and causing pollution to the product.

[0021] The air supply duct 17 is also provided with a condenser 10 , which is used to cool the main device 1 through the condenser 10 to prevent the main device 1 from being overheated.

[0022] The air supply duct 17 is also provided with a pressure relief valve 11 , which is used to form a pressure difference between the induced draft fan 14 and the main device 1 , thereby reducing the return air volume of the main device 1 .

[0023] The air supply duct 17 is respectively installed with an air velocity flow meter 2, a temperature and humidity sensor 3 and a pressure transmitter 4 near the main equipment 1. The air velocity flow meter 2, the temperature and humidity sensor 3 and the pressure transmitter 4 are used to monitor the wind speed, temperature and humidity, and pressure in the return air duct in real time to prevent the air supply duct 17 from being blocked and to prevent its temperature, humidity and pressure from being too high.

[0024] The air supply duct 17 is fixedly connected with a compressed air intake pipe 7 , and the compressed air intake pipe 7 is fixedly connected to an air source 6 , so that compressed air can be directly charged into the air supply duct 17 to reduce the humidity inside the air supply duct 17 .

[0025] A silencer 13 is installed on the air supply duct 17 near the induced draft fan 14 to reduce the noise generated when the induced draft fan 14 is running, thereby reducing noise pollution in the working environment.

[0026] The three instruments, namely the air velocity flow meter 2, the temperature and humidity sensor 3 and the pressure transmitter 4, are fixedly connected to the air supply duct 17 by threaded connection, so the installation is convenient.

[0027] The working principle of this utility model:

[0028] The main equipment 1 in this example is a crushing equipment for processing new energy positive electrode materials. During operation, the dust generated by the main equipment 1 enters the pulse dust collector 8 through the material pipe 15, and the air processed by the pulse dust collector 8 enters the induced draft fan 14 through the return air pipe 16. Since the air valve 9 and the air filter 12 are installed on the return air pipe 16, the return air volume can be effectively controlled to inhibit the material generated inside the pulse dust collector 8 from entering the induced draft fan 14, and entering the condenser 10 through the induced draft fan 14, causing blockage of the condenser 10. The air after the above treatment is returned to the main equipment 1 through the medium efficiency filter 5, and the metal foreign matter generated inside the induced draft fan 14 is filtered by the medium efficiency filter 5 to prevent it from entering the main equipment 1 and causing pollution to the product, thus completing a working cycle.

[0029] The above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. For those skilled in the art, the technical solution recorded in the above embodiments can be improved and modified, or some of the technical features therein can be replaced by equivalents; and all these modifications and replacements should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A pulverizer return air control system, comprising a main device (1), a pulse dust collector (8), a material pipeline (15), a return air pipeline (16), an air supply pipeline (17) and an induced draft fan (14), characterized in that: The main equipment (1) is connected to the pulse dust collector (8) via a material pipeline (15); the pulse dust collector (8) is connected to the induced draft fan (14) via a return air pipeline (16); the induced draft fan (14) is connected to the main equipment (1) via an air supply pipeline (17), forming a closed-loop system, wherein an air valve (9) and an air filter (12) are installed on the return air pipeline (16), and a medium-efficiency filter (5) is installed on the air supply pipeline (17).

2. The pulverizer return air control system according to claim 1, characterized in that: A condenser (10) is also installed on the air supply duct (17).

3. The pulverizer return air control system according to claim 2, characterized in that: A pressure relief valve (11) is also installed on the air supply duct (17).

4. The pulverizer return air control system according to claim 3, characterized in that: An air velocity flow meter (2), a temperature and humidity sensor (3) and a pressure transmitter (4) are respectively installed on the air supply duct (17) near the main equipment (1).

5. The pulverizer return air control system according to claim 4, characterized in that: The air supply duct (17) is fixedly connected to a compressed air intake pipe (7), and the compressed air intake pipe (7) is fixedly connected to an air source (6).

6. The pulverizer return air control system according to claim 5, characterized in that: A silencer (13) is installed on the air supply duct (17) near the induced draft fan (14).

7. The pulverizer return air control system according to claim 4, characterized in that: The three instruments, namely the wind speed flow meter (2), the temperature and humidity sensor (3) and the pressure transmitter (4), are fixedly connected to the air supply duct (17) by means of threaded connection.

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