Double powder selecting device for ring roller mill

Abstract

The utility model provides a double powder selecting device for ring roller mill, including ring roller mill, the ring roller mill top output is provided with a primary analysis machine, the primary analysis machine output is connected with secondary analysis machine through pipeline, the secondary analysis machine top output is connected with cyclone powder collector through pipeline, the cyclone powder collector top is connected with return air pipeline, return air pipeline is connected with fan away from one end of cyclone powder collector, the fan is used for ring roller mill between setting up and has the advantages of simple structure, secondary powder selection, good powder collecting effect.

Description

Technical Field

[0001] This utility model relates to the field of powder selection devices, and in particular to a dual powder selection device for a ring roller mill. Background Technology

[0002] Ring roller mills are widely used mechanical equipment for the ultrafine grinding of non-metallic minerals. Their core working principle involves the crushing, impact, and grinding action of multiple ring rollers to pulverize materials. Because the particle size of the ground raw materials is uneven, the powder needs to be sieved to obtain powder of the target particle size. Chinese patent CN214864068U, filed on March 19, 2021, discloses a dual-closed-circuit internal circulation grinding device for an air classifier. The device includes a main body, a material selection bin, and a grinding bin. The material selection bin is located inside the upper part of the main body, and the grinding bin is located inside the lower part. First shafts are rotatably connected to both inner walls of the grinding bin via first bearings. Grinding rollers are fixedly connected to the opposite ends of the first shafts. A motor is fixedly installed at the bottom of the main body. A second shaft is rotatably connected to the bottom of the grinding bin via a second bearing. A grinding disc is fixedly installed on the upper end of the second shaft. Two grinding rollers abut against corresponding sides of the grinding disc. The lower end of the second shaft penetrates the bottom of the grinding bin and is fixedly connected to the output end of the motor. This invention allows for the re-grinding and cyclical selection of coarse cement material after selection, thus avoiding waste of cement material.

[0003] In this technical solution, after grinding the material, only one particle size can be obtained, which allows for further improvement. Summary of the Invention

[0004] In order to solve the problems existing in the background art, this utility model proposes a dual powder selection device for ring roller mill.

[0005] A dual-classification powder device for a ring roller mill includes a ring roller mill, a primary analyzer is installed at the top output end of the ring roller mill, a secondary analyzer is connected to the output end of the primary analyzer via a pipe, a cyclone dust collector is connected to the top output end of the secondary analyzer via a pipe, a return air pipe is connected to the top of the cyclone dust collector, a fan is connected to the end of the return air pipe away from the cyclone dust collector, and an air inlet pipe is provided between the ring roller mills.

[0006] Based on the above, a powder discharge switch is provided at the bottom of the secondary analyzer, and a dust discharge port is provided at the bottom of the cyclone dust collector.

[0007] Based on the above, the surface of the ring roller mill is provided with a feed inlet.

[0008] Based on the above, an exhaust pipe is connected to the top of the air inlet pipe, and a pulse dust collector is connected to the end of the exhaust pipe away from the air inlet pipe.

[0009] This invention has substantial features and advancements compared to existing technologies. Specifically, this invention forms a closed-loop circulation system through a ring roller mill, a primary analyzer, a secondary analyzer, a cyclone dust collector, a return air duct, a fan, and an inlet air duct. The powder passes through the primary and secondary analyzers under the action of airflow, which can perform secondary powder selection. The powder of the target particle size is discharged through the powder outlet switch, and the finer powder is separated from the airflow by the cyclone dust collector. It has the advantages of simple structure, secondary powder selection, and good powder collection effect. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Explanation of reference numerals in the attached drawings: 100, ring roller mill; 200, primary analyzer; 300, secondary analyzer; 400, cyclone dust collector; 500, return air duct; 600, fan; 700, air inlet duct; 800, exhaust duct; 900, pulse dust collector; 101, feed inlet; 301, powder discharge switch; 401, dust discharge port. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] like Figure 1 As shown, a dual-selection device for a ring roller mill includes a ring roller mill 100 with a feed inlet 101 on its surface. A primary analyzer 200 is installed at the top output end of the ring roller mill 100. A secondary analyzer 300 is connected to the output end of the primary analyzer 200 via a pipe. A powder discharge switch 301 is installed at the bottom of the secondary analyzer 300. A cyclone dust collector 400 is connected to the top output end of the secondary analyzer 300 via a pipe, and a dust discharge port 401 is installed at the bottom of the cyclone dust collector 400. A return air duct 500 is connected to the top of the cyclone dust collector 400. A fan 600 is connected to the end of the return air duct 500 away from the cyclone dust collector 400. An air inlet pipe 700 is installed between the fan 600 and the ring roller mill 100.

[0014] The material to be ground is fed into the ring roller mill 100 through the feed inlet 101. After the ring roller mill 100 grinds the material, the blower 600 blows air into the ring roller mill 100 through the air inlet pipe 700, causing small particles of material inside the ring roller mill 100 to enter the primary analyzer 200. Under the screening action of the primary analyzer 200, the material with qualified particle size enters the secondary analyzer 300 under the action of air force. The secondary analyzer 300 performs secondary powder selection on the material. The coarser powder can be discharged through the powder outlet switch 301, and the finer powder enters the cyclone dust collector 400. The cyclone dust collector 400 separates the powder from the air, and the finer material is discharged from the dust outlet 401. The dust-removed air flows back into the blower 600 through the return air pipe 500, making the entire system a closed-loop circulation system.

[0015] An exhaust pipe 800 is connected to the top of the air inlet duct 700, and a pulse dust collector 900 is connected to the end of the exhaust pipe 800 away from the air inlet duct 700. During operation, due to air leakage in the system and the evaporation of moisture brought in by the material, the system will generate residual air. The residual air will flow through the exhaust pipe 800 on the air inlet duct 700 to the pulse dust collector 900 and then be discharged outward. The dust carried by the residual air is collected and discharged by the pulse dust collector 900.

[0016] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A dual-powder separator for a ring roller mill, characterized in that: The device includes a ring roller mill (100), a primary analyzer (200) is provided at the top output end of the ring roller mill (100), a secondary analyzer (300) is connected to the output end of the primary analyzer (200) through a pipe, a cyclone dust collector (400) is connected to the top output end of the secondary analyzer (300) through a pipe, a return air pipe (500) is connected to the top of the cyclone dust collector (400), a fan (600) is connected to the end of the return air pipe (500) away from the cyclone dust collector (400), and the fan (600) is used to set up an air inlet pipe (700) between the ring roller mill (100).

2. The dual-powder separator for a ring roller mill according to claim 1, characterized in that: The secondary analyzer (300) is equipped with a powder discharge switch (301) at the bottom, and the cyclone dust collector (400) is equipped with a dust discharge port (401) at the bottom.

3. The dual-powder separator for a ring roller mill according to claim 1, characterized in that: The surface of the ring roller mill (100) is provided with a feed inlet (101).

4. The dual-powder separator for a ring roller mill according to claim 1, characterized in that: The top of the air inlet pipe (700) is connected to an exhaust pipe (800), and the end of the exhaust pipe (800) away from the air inlet pipe (700) is connected to a pulse dust collector (900).

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