CN102335656B - Quadric-separated winnowing grader - Google Patents

Abstract

The utility model has invented a four-separation winnowing classifier, which includes a cyclone separator, a powder selection chamber, a vertical transmission shaft, a frequency conversion motor, a cage rotor, a fan, a fine sand collection cone, a medium sand collection cone and a coarse sand separator. The coarse sand sorting device is composed of a V-shaped tube, a breaking plate, and a grading plate. The breaking plate is arranged in the V-shaped tube from top to bottom and is located on the side of the air inlet, and the grading plate is set on the V-shaped tube from top to bottom. In the V-shaped tube and on one side of the air outlet, there is a distance between the breaking plate and the grading plate to form a blanking channel. The lower end of the V-shaped tube is provided with a coarse sand discharge pipe. The feed port of the coarse sand discharge pipe It is located under the lowermost dispersing plate and the lowermost grading plate, and the V-shaped pipe is provided with a feed pipe, and the air outlet of the V-shaped pipe is connected with the air inlet channel provided by the middle sand collecting cone through a transition pipe. The breaking plates in the coarse sand sorting device are parallel to each other and form an angle of 40° with the horizontal plane, and the classifying plates are parallel to each other and form an angle of 75° with the horizontal plane.

Description

Four Separation Air Separation and Classification Machine

technical field

The invention relates to a classifier for artificial sand, in particular to a four-separation air separation classifier.

Background technique

Due to the increasing scarcity of natural sand resources and the serious damage to the environment caused by natural sand mining, artificial sand production has developed rapidly. At present, there are two processes of artificial sand making: wet sand making and dry sand making. Wet sand making adopts water washing to remove powder, but this method not only wastes water resources, but also needs to be dried when collecting fine powder, so it consumes a lot of energy. Dry sand making is to classify sand by air selection. The existing air selection classifier can only achieve three separations, that is, it is divided into coarse sand, medium sand and powder. To make artificial sand have a good gradation, it must rely on Grinders are used to adjust the gradation of artificial sand, which not only increases the investment in equipment, but also increases production costs.

Contents of the invention

The technical problem to be solved by the present invention is to provide a four-separation winnowing and classifying machine, which can divide artificial sand into coarse sand, medium sand, fine sand, and powder, so as to realize a good gradation of artificial sand, which not only saves The input of equipment is reduced, and the production cost is reduced.

In order to solve the above-mentioned technical problems, the present invention provides a four-separation winnowing and classifying machine, which comprises a cyclone separator, a powder selection chamber, a vertical transmission shaft, a frequency conversion motor, a cage rotor, a blower fan, a fine sand collecting cone, a medium sand collecting cone and Coarse sand separation device, the cyclone separator is located around the powder selection chamber, the air inlet of the cyclone separator is connected with the upper part of the powder selection chamber through the first pipe, and the air outlet of the cyclone separator is connected with the air inlet of the fan through the second pipe The powder outlet of the cyclone separator is located at its lower end, the vertical transmission shaft is mounted on the top of the powder selection chamber through the bearing seat, and the upper end of the vertical transmission shaft is located outside the top of the powder selection chamber. The lower end of the motor is located inside the powder selection chamber, the frequency conversion motor is set on the top of the powder selection room, the pulley set on the shaft of the frequency conversion motor is connected with the pulley set on the upper end of the vertical drive shaft through a belt, and the cage rotor Set on the lower end of the vertical transmission shaft, the fine sand collection cone is set under the cage rotor, the upper end of the fine sand collection cone is evenly equipped with arc-shaped deflectors, and the lower end of the fine sand collection cone is provided with fine sand The discharge pipe and the medium sand collection cone are arranged under the powder selection chamber, and the medium sand collection cone is provided with an air inlet channel. The coarse sand separation device is composed of a V-shaped tube, a breaking plate, and a grading plate. The left end is the air inlet, and the right end is the air outlet. The dispersing plate is arranged in the V-shaped pipe from top to bottom and is located on the side of the air inlet. The grading plate is arranged in the V-shaped pipe from top to bottom and is located on the side of the air outlet. There is a distance between the loose plate and the grading plate to form a blanking channel. The lower end of the V-shaped pipe is provided with a coarse sand discharge pipe. Below the grading plate, there is a feed pipe on the V-shaped pipe, the outlet of the feed pipe is located above the uppermost dispersing plate, and the air inlet of the V-shaped pipe is connected with the air outlet of the fan through a connecting pipe , the air outlet of the V-shaped pipe is connected to the air inlet passage provided by the medium sand collection cone through a transition duct, and the lower end of the transition duct is provided with a medium sand discharge pipe, and the dispersing plates in the coarse sand sorting device are parallel to each other And the angle formed with the horizontal plane is 40°, and the grading plates are parallel to each other and the angle formed with the horizontal plane is 75°.

Compared with the prior art powder classifier, the above-mentioned classifier can only separate three parts, this classifier can realize the separation of coarse sand, medium sand, fine sand and powder of artificial sand, so that artificial sand has a good gradation, so it is compatible with Compared with the prior art, it not only saves the equipment investment, but also reduces the production cost.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the present invention.

FIG. 2 is a top view of FIG. 1 .

In the figure 1. Cyclone separator, 2. Cage rotor, 3. Vertical transmission shaft, 4. Pulley, 5. Grading plate, 6. The bottom grading plate, 7. Second pipe, 8. Air inlet, 9. Fan, 10. Top breaking board, 11. Breaking board, 12. Bottom breaking board, 13. Motor, 14. Coarse sand discharge pipe, 15. Medium sand discharge pipe, 16. Air outlet, 17. Powder outlet, 18. Fine sand discharge pipe, 19. Transition pipe, 20. Medium sand collection cone, 21. Fine sand collection cone, 22. Powder selection chamber, 23. Arc deflector 24 . Feed pipe, 25. Air inlet channel.

Detailed ways

In Figure 1 and Figure 2, the four-separation winnowing classifier includes cyclone separator 1, powder selection chamber 22, vertical drive shaft 3, frequency conversion motor, cage rotor 2, fan 9, fine sand collection cone 21, medium sand collection Cone 20 and coarse sand sorting device. The cyclone separator 1 is located around the powder selection chamber 22, the air inlet of the cyclone separator 1 communicates with the upper part of the powder selection chamber 22 through the first pipeline, and the air outlet of the cyclone separator 1 passes through the inlet of the second pipeline 7 and the blower fan 9. The tuyeres are connected, and the powder outlet 17 of the cyclone separator 1 is located at its lower end. The pulley on the blower fan 9 links to each other with the pulley that is provided with on the motor 13 by belt. The vertical transmission shaft 3 is mounted on the top of the powder selection chamber 22 through the bearing seat, the upper end of the vertical transmission shaft 3 is located outside the top of the powder selection chamber 22, and the lower end of the vertical transmission shaft 3 is located in the powder selection chamber 22. internal. Frequency conversion motor is arranged on the top of powder selection chamber 22, and the belt pulley that is arranged on the frequency conversion motor rotating shaft links to each other with the belt pulley 4 that is arranged on the vertical drive shaft 3 upper end by belt, not shown in the figure. The cage rotor 2 is arranged on the lower end of the vertical drive shaft 3 . The fine sand collecting cone 21 is arranged below the cage rotor 2 , and the upper periphery of the fine sand collecting cone 21 is uniformly arranged with arc-shaped deflectors 23 , and the lower end of the fine sand collecting cone 21 is provided with a fine sand discharge pipe 18 . The middle sand collection cone 20 is arranged below the powder selection chamber 22 , and the middle sand collection cone 20 is provided with an air inlet passage 25 . The coarse sand sorting device is composed of a V-shaped tube, a breaking plate 11, and a classifying plate 5. The left end of the V-shaped tube is an air inlet 8, and the right end is an air outlet 16. The breaking plate 11 is sequentially arranged on the V-shaped Inside the tube and on the side of the air inlet 8, the grading plate 5 is sequentially arranged in the V-shaped tube from top to bottom and on the side of the air outlet 16, and the breaking plate 11 and the grading plate 5 are separated by a certain distance to form a blanking channel. The lower end of the V-shaped pipe is provided with a coarse sand discharge pipe 14, and the feeding port of the coarse sand discharge pipe 14 is located below the lowermost dispersing plate 12 and the lowermost grading plate 6, and the V-shaped pipe is provided with an inlet. Material pipe 24, the discharge opening of feed pipe 24 is positioned at the top of breaking up plate 10, the air inlet of V-shaped pipe is connected with the air outlet of described blower fan 9 by connecting pipe, and the air outlet of V-shaped pipe 16 The transition duct 19 is connected to the air inlet passage 25 provided on the medium sand collecting cone 20 , and the lower end of the transition duct 19 is provided with a medium sand discharge pipe 15 . The breaking plates in the coarse sand sorting device are parallel to each other and form an angle of 40° with the horizontal plane, and the grading plates are parallel to each other and form an angle of 75° with the horizontal plane. When the above-mentioned classifier is working, after the material enters the coarse sand sorting device from the feed pipe 24, it falls onto the uppermost breaking plate 10 in the V-shaped tube. On the other hand, the material is blown away by the airflow entering from the left and is in a suspended state, while the coarse sand is discharged from the coarse sand discharge pipe 14 at the lower end of the V-shaped pipe. The suspended material enters between the grading plates 5 with the airflow. Due to the deceleration of the airflow and the deflection of the direction, the coarse sand in the material collides with each grading plate 5 and loses kinetic energy and falls to the coarse sand discharge pipe 14 to be discharged. The middle sand loses kinetic energy after colliding with the inner surface of the middle sand collection cone 20 and the outer surface of the fine sand collection cone 21 and falls into the middle sand discharge pipe 15 to be discharged. After the airflow containing fine sand and powder enters the powder selection chamber 22, it rotates under the action of the arc-shaped deflector 23 to produce the dual effects of centrifugal sedimentation and gravity sedimentation. The fine sand falls into the fine sand collection cone 21, and the Fine sand discharge pipe 18 discharges. The powder passes through the cage-shaped rotor 2 with the airflow, and the fine sand is thrown out under the action of the cage-shaped rotor 2. The fine sand hits the arc deflector 23 and falls into the fine sand collecting cone 21, and then is discharged from the fine sand discharge pipe 18. , the powder-containing air flow enters the cyclone separator 1 for gas-solid separation, the separated powder is discharged from the powder outlet 17 of the cyclone separator 1, and the clean air enters the inlet of the fan 9 through the pipeline 7 for circulation. It can be seen from the above that the above-mentioned classifier can divide the artificial sand into coarse sand, medium sand, fine sand, and powder, so as to achieve a good gradation of artificial sand, which not only saves equipment investment, but also reduces production costs.

Claims (1)

1. a separated selection by winnowing grader, it is characterized in that: contain cyclone separator, separating chamber, vertical drive shaft, variable-frequency motor, cage rotor, blower fan, fine sand collection cone, medium sand collection cone and coarse sand sorting unit, cyclone separator is positioned at separating chamber around, the air inlet of cyclone separator is connected with the top of separating chamber by the first pipeline, the air outlet of cyclone separator is connected with the air inlet of blower fan by second pipe, the meal outlet of cyclone separator is positioned at the lower end of cyclone separator, vertical drive shaft is installed on the top of separating chamber by bearing block, the upper-end part of driving of vertical drive shaft is in the outside at the top of separating chamber, the lower end part of vertical drive shaft is in the inside of separating chamber, variable-frequency motor is arranged on the napex of separating chamber, the belt wheel being arranged in variable-frequency motor rotating shaft is connected with the belt wheel being arranged on vertical drive shaft upper end by belt, cage rotor is arranged on the bottom of vertical drive shaft, fine sand collection cone is arranged on the below of cage rotor, the uniform arc deflector that arranges on the upper end periphery of fine sand collection cone, the lower end of fine sand collection cone is provided with fine sand discharge nozzle, medium sand collection cone is arranged on the below of separating chamber, medium sand collection cone is provided with air intake passage, described coarse sand sorting unit is by V-arrangement pipe, break up plate, graded plate forms, the left end of V-arrangement pipe is air inlet, right-hand member is air outlet, break up the side that plate is successively set on from top to down in V-arrangement pipe and is positioned at air inlet, graded plate is successively set on from top to down in V-arrangement pipe and is positioned at a side of air outlet, break up the segment distance of being separated by between plate and graded plate and form a blanking channel, the lower end of V-arrangement pipe is provided with coarse sand discharge nozzle, the charging aperture of this coarse sand discharge nozzle is positioned at nethermost below of breaing up plate and nethermost graded plate, V-arrangement pipe is provided with feed pipe, the discharging opening of feed pipe is positioned at uppermost top of breaing up plate, the air inlet of V-arrangement pipe is connected with the air outlet of described blower fan by tube connector, the air outlet of V-arrangement pipe is connected with the air intake passage that medium sand collection cone is provided with by transition conduit, the lower end of transition conduit is provided with medium sand discharge nozzle, in described coarse sand sorting unit respectively break up that plate is parallel to each other and with horizontal plane angulation be 40 °, each graded plate be parallel to each other and with horizontal plane angulation be 75 °.

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