CN204892373U - High dispersivity vortex selection powder machine - Google Patents

Abstract

The utility model discloses a highly dispersive eddy current powder separator, which comprises a shell, a cage rotor, a motor, a reduction box, a transmission shaft, a feeding pipe, an air outlet pipe, a material spreading plate, an air guide vane and a coarse powder collector. The cone also includes the medium and coarse powder collection cone, the upper collection cone, the middle collection cone, the lower collection cone, the outer cylinder, the air inlet pipe and the material discharge pipe, the medium and coarse powder collection cone is located below the cage rotor, and the lower end of the transmission shaft Extending to the inner lower part of the housing, the lower end of the transmission shaft is installed in the bearing seat, the spreading disc is arranged on the lower end of the transmission shaft, and the upper collecting cone, middle collecting cone and lower collecting cone are arranged on the housing from top to bottom. The inner and lower parts of the outer cylinder and the upper opening of the outer cylinder are connected to the lower end of the feed pipe, the lower opening of the outer cylinder is connected to the upper opening of the coarse powder collecting cone, the air inlet pipe is located in the outer cylinder, and the air inlet pipe is connected to the outer cylinder. There is a coarse powder channel between the inner wall of the feeding pipe and the inner wall of the feeding pipe. The feeding pipe is installed on the casing, the outlet of the feeding pipe is located in the casing and above the spreading plate, and the air outlet pipe is located on the side of the casing. upper part.

Description

High dispersion eddy current powder separator

technical field

The utility model relates to a powder separator, in particular to a highly dispersed eddy current powder separator.

Background technique

At present, in the cement production process, the equipment used includes a powder separator, which is usually an O-Sepa powder separator, which contains a shell with a cage-shaped rotor inside, and a sprinkler on the upper part of the cage-shaped rotor. The material tray, the outer ring of the rotor is equipped with a circle of guide blades, the top of the shell is provided with an air outlet pipe and a feed port, and the lower part of the rotor is a coarse powder cone. Working principle: The selected material enters from the feeding port on the top of the shell and falls on the rotating spreading plate. Due to the action of centrifugal force, the material is thrown out and hits the buffer plate to change direction and fall freely. A material curtain is formed in the annular space between them. The primary air and the secondary air enter from the two tangential air inlets on both sides of the shell at 180 ^° to each other, and are guided by the guide blades, combined with the rotation of the rotor to form a strong horizontal rotating flow separation field (vortex field) , the strong shearing force can break up the material agglomerates and create conditions for efficient powder selection. The centrifugal force is smaller than the centripetal suction of the airflow, and the finer particles enter the rotor with the airflow through the rotor blades, and are drawn out from the middle air duct. Collected by the dust collector; during the falling process of the coarser particles, the centrifugal force is greater than the centripetal suction of the airflow and hits the guide vane, and is continuously scoured by the horizontal tangential airflow, and the fine powder adhering to it is continuously Flush down and into the middle of the cage rotor. Qualified fine powder falling into the coarse powder of the ash hopper will be cleaned by three tertiary winds evenly distributed on the circumference of the ash hopper to separate the fine powder. In the above-mentioned O-Sepa powder separator, the material entering from the top feed port is scattered to the surroundings through the spreading plate on the top of the cage-shaped rotor. In the powder selection area between the air guide vane and the rotor, the material curtain falling between the air guide vane and the rotor is relatively thick, so not only the powder selection efficiency is low, but also the classification accuracy is high; at the same time, due to the For top feeding, there is often a phenomenon of material aggregation between the guide vane and the shell, which greatly affects the powder selection efficiency.

Utility model content

The technical problem to be solved by the utility model is to provide a highly dispersive eddy current powder separator, which not only has high powder selection efficiency, but also has high classification accuracy.

In order to solve the above technical problems, the utility model is a highly dispersive eddy current powder separator, which includes a housing, a cage rotor, a motor, a reduction box, a transmission shaft, a feeding pipe, an air outlet pipe, a spreading plate, and an air guide vane. and the coarse powder collection cone, the motor and the reduction box are arranged on the top of the casing, the motor is connected to the reduction box, the upper end of the transmission shaft is connected to the reduction box, the lower end of the transmission shaft passes through the top of the casing and is located in the casing, and the cage rotor is set On the transmission shaft, a circle of the above-mentioned air guide vanes is installed on the outer side of the cage rotor, and it also includes a medium and coarse powder collecting cone, an upper collecting cone, a middle collecting cone, a lower collecting cone, an outer cylinder, an air inlet pipe and a feeding The middle and coarse powder collection cone is located below the cage rotor, the lower end of the middle and coarse powder collection cone is connected to one end of the discharge pipe, and the other end of the discharge pipe passes through the housing and is located on the outside of the housing and is connected to the The air lock valve is connected, the lower end of the transmission shaft extends to the inner lower part of the housing, the lower end of the transmission shaft is installed in the bearing seat, the bearing seat is arranged in the housing through the connecting rod, and the spreading plate is arranged on the transmission shaft On the lower end of the middle and coarse powder collection cone, the upper collection cone, the middle collection cone and the lower collection cone are arranged in the inner lower part of the housing from top to bottom in turn, and the upper mouth of the upper collection cone is located at the sprinkler. Below the material tray, the lower opening of the lower collecting cone is connected to the upper opening of the feeding pipe, the upper opening of the outer cylinder is connected to the lower end of the feeding pipe, and the lower opening of the outer cylinder is connected to the upper opening of the coarse powder collecting cone. The inlet is connected, the air inlet pipe is located in the outer cylinder, and there is a coarse powder channel between the air inlet pipe, the outer cylinder and the inner wall of the feed pipe. Above the upper opening of the upper collecting cone, the air inlet of the air inlet pipe is located on the outside of the outer cylinder, the feed pipe is mounted on the shell, and the feed port of the feed pipe is located on the outside of the shell, and the feed The discharge port of the pipe is located in the housing and above the spreading plate, and the air outlet pipe is located in the upper part of the housing.

There are two feed pipes, which are symmetrically mounted on the housing.

In the above-mentioned high-dispersion vortex powder separator, since the spreading disc is set under the cage rotor, and the outlet of the feeding pipe is located above the spreading disc, it is directly sprinkled on the spreading disc through the feeding tube. On the top, the spreading disc rotates at a high speed to fully disperse the materials. The dispersed materials are classified for the first time under the action of the airflow blown from the bottom air inlet pipe. The inner wall of the shell, the upper collecting cone, the middle collecting cone, the lower collecting cone, the feed pipe and the outer cylinder enter the coarse powder collecting cone; the material after the first classification enters the guide blade with the air flow, and the medium and coarse particle material and fine particle The material is separated before entering the cage-shaped rotor, and the medium-coarse powder falls into the medium-coarse powder collection cone below the cage-shaped rotor and is discharged; the fine-grained material enters the air outlet pipe through the cage-shaped rotor and reaches the peripheral dust collector to be collected; compared with the prior art In comparison, not only the powder selection efficiency is high, but also the classification accuracy is high.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic view of the right view of Fig. 1 .

In the figure 1. Motor, 2. Gear box, 3. Transmission shaft, 4. Housing, 5. Wind guide vane, 6. Cage rotor, 7. Medium and coarse powder collecting cone, 8. Discharge pipe, 9. Lock Air valve, 10. Distributing plate, 11. Connecting rod, 12. Upper collecting cone, 13. Middle collecting cone, 14. Lower collecting cone, 15. Feed pipe, 16. Air inlet pipe, 17. Outer cylinder, 18. Coarse powder collection cone, 19. Air inlet, 20. Air outlet pipe, 21. First feed pipe, 22. Second feed pipe.

Detailed ways

In Fig. 1 and Fig. 2, the highly dispersive eddy current powder separator includes a housing 4, a cage rotor 6, a motor 1, a reduction box 2, a transmission shaft 3, a feed pipe, an air outlet pipe 20, a spreading disc 10, Wind guide vanes 5 and coarse powder collection cone 18. Both the motor 1 and the reduction box 2 are arranged on the top of the housing 4 . The motor 1 is connected to the reduction box 2, the upper end of the transmission shaft 3 is connected to the reduction box 2, the lower end of the transmission shaft 3 passes through the top of the casing 4 and is located in the casing 4, and the cage rotor 6 is arranged on the transmission shaft 3, and the cage rotor The outside of 6 is equipped with a circle of described wind guide vanes 5.

The above-mentioned high-dispersibility eddy current powder separator also includes a medium and coarse powder collecting cone 7, an upper collecting cone 12, a middle collecting cone 13, a lower collecting cone 14, an outer cylinder 17, an air inlet pipe 16 and a feeding pipe 15. The middle and coarse powder collection cone 7 is located below the cage rotor 6, the lower end of the middle and coarse powder collection cone 7 is connected to one end of the discharge pipe 8, and the other end of the discharge pipe 8 passes through the housing 4 and is located in the housing 4. and connected to the air lock valve 9. The lower end of the transmission shaft 3 extends to the inner lower part of the housing 4 , the lower end of the transmission shaft 3 is installed in a bearing seat, and the bearing seat is arranged in the housing 4 through a connecting rod 11 . The spreading disc 10 is arranged on the lower end of the transmission shaft 3 and is located below the middle and coarse powder collecting cone 7 . The upper collection cone 12, the middle collection cone 13 and the lower collection cone are arranged on the inner lower part of the housing 4 from top to bottom for 14 times, and the upper mouth of the upper collection cone 12 is located below the spreading tray 10, and the lower collection cone The lower opening of 14 is connected with the upper opening of the feeding pipe 15, the upper opening of the outer cylinder 17 is connected with the lower end of the feeding pipe 15, and the lower opening of the outer cylindrical body 17 is connected with the upper opening of the coarse powder collecting cone 18 . The air inlet pipe 16 is located in the outer cylinder 17, and there is a coarse powder passage between the air inlet pipe 16, the inner wall of the outer cylinder 17 and the feed pipe 15. The upper opening of the air inlet pipe 16 is located below the spreading tray 10 and above the upper opening of the upper collecting cone 12 , and the air inlet 19 of the air inlet pipe 16 is located outside the outer cylinder 17 . The feed pipe is mounted on the housing 4, the feed opening of the feed pipe is located outside the housing 4, and the discharge port of the feed pipe is located in the housing 4 and on the side of the spreading plate 10. Above, the air outlet pipe 20 is located at the upper part of the casing 4 . In this embodiment, the number of the feed pipes is two, that is, the first feed pipe 21 and the second feed pipe 22 , which are symmetrically mounted on the casing 1 .

When working, the material is sprinkled on the material spreader 10 through the feed pipe, and the material spreader 10 is driven by the motor 1 and the reduction box 2, and the material spreader 10 rotates at a high speed to fully disperse the material. Under the action of the airflow blown out by the air duct 16, the first classification is carried out, and the coarse powder in the material is thrown to the inner wall of the shell 4, and after losing kinetic energy, it is collected along the inner wall of the shell 4, the upper collecting cone 12, the middle collecting cone 13, and the lower collecting cone. The cone 14 , the feed pipe 15 and the outer cylinder 17 enter the coarse powder collection cone 18 . The material after the first classification enters the guide blade 5 along with the airflow, and the medium-coarse particle material and the fine-particle material are separated before entering the cage rotor 6, and the medium-coarse powder falls into the medium-coarse powder collection cone 7 below the cage rotor 6 and is discharged. ; The fine particle material enters the air outlet pipe 20 through the cage rotor 6 and reaches the peripheral dust collector to be collected.

Compared with the existing O-Sepa powder separator, the above-mentioned high-dispersion eddy current separator has the following advantages: 1. The principle of classification is advanced, and the structural design is relatively unique. Sedimentation, centrifugal sedimentation, plane vortex and other classification principles realize multi-stage separation. Since the spreading disc is set under the cage-shaped rotor, the powdery material from the cement mill is directly sprinkled on the propeller-type spreading disc through the feed pipe, and the spreading disc rotates at a high speed to fully disperse the material, and the dispersed material passes through the The air intake of the bottom duct is first classified. The material after the first classification enters the guide blade with the airflow, which makes the coarse particle material and fine particle material separated before entering the tumbler cage. Through this change, the output is significantly increased, the air volume is significantly reduced, and the distribution of cement product particles is more reasonable. 2. The efficiency of powder selection is greatly improved. The efficiency of 45 micron cement powder selection of this powder separator can reach more than 85%. 3. Improve the quality of finished products. The specific surface area of the finished product can reach more than 400㎡/kg, and the sieve residue of 45um is less than 5%. 4. The powder selection vortex field is uniform, stable and powerful, with low flow resistance, low noise and high powder selection efficiency, which can effectively reduce the power of the dust collection fan. 5. The amount of powder to be processed is large, and the output is larger than that of centrifugal and cyclone powder separators, so it is more suitable for large-scale production, and its classification performance is very stable.

Claims (2)

1. a polymolecularity vortex powder selecting machine, containing housing, cage rotor, motor, reduction box, power transmission shaft, feed pipe, discharge pipe, spreading disk, wind blade and meal collection cone, motor and reduction box are all arranged on the top of housing, motor is connected with reduction box, power transmission shaft upper end is connected with reduction box, the lower end of power transmission shaft is positioned at housing through the top of housing, cage rotor is arranged on power transmission shaft, the wind blade described in a circle is equipped with in the outside of cage rotor, it is characterized in that: also containing middle meal collection cone, upper collection cone, middle collection cone, lower collection cone, outer cylinder body, blast pipe and material passing tube, middle meal collection cone is positioned at the below of cage rotor, the middle lower end of meal collection cone is connected with one end of discharge nozzle, the other end of discharge nozzle is positioned at the outside in housing through described housing, and be connected with air valve, the lower end of described power transmission shaft extends to the interior bottom of housing, the lower end of described power transmission shaft is contained in bearing block, bearing block is arranged in housing by connecting rod, described spreading disk is arranged on the bottom of power transmission shaft, and be arranged in the below of meal collection cone, upper collection cone, middle collection cone and lower collection cone are arranged on the interior bottom of housing successively from top to bottom, and the below being positioned at described spreading disk suitable for reading of upper collection cone, the lower end opening of collection cone is connected with the suitable for reading of material passing tube, the bottom of the suitable for reading and material passing tube of outer cylinder body is connected, the end opening of outer cylinder body is connected with described the suitable for reading of meal collection cone, blast pipe is positioned at outer cylinder body, blast pipe and all leave meal passage between outer cylinder body and the inwall of material passing tube, the below being positioned at described spreading disk suitable for reading of blast pipe, and be positioned at collection cone top suitable for reading, the air inlet of blast pipe is positioned at the outside of outer cylinder body, described feed pipe installs on the housing, the charging aperture of feed pipe is positioned at the outside of housing, the discharging opening of feed pipe is positioned at housing and above described spreading disk, described discharge pipe is positioned at the top of housing.

2. polymolecularity vortex powder selecting machine according to claim 1, is characterized in that: the quantity of described feed pipe is two, and symmetry is installed on housing.