Dry separating table, a separator and equipment for the compound dry separation with this table

• US 20070023327A1
• Filed: 09/12/2003
• Published: 02/01/2007
• Est. Priority Date: 05/18/2003
• Status: Active Grant

• Current Assignee: Tangshan Shenzhou Machinery Co. Ltd.
• Original Assignee: Tangshan Shenzhou Machinery Co. Ltd.
• Inventors: Yang, Yunsong, Li, Gongmin
• Granted Patent: US 7,708,145 B2
• Time in Patent Office: Days
• US Class Current: 209/44
• CPC Class Codes: B03B 4/02 using swinging or shaking tables
• CPC Class Codes: B03B 4/065 having inclined portions
• CPC Class Codes: B07B 4/08 while the mixtures are supported by sieves, screens, or like mechanical elements

Abstract

The present invention discloses a combined dry sorting bed, the sorting bed is arranged with an inclination, and the inclination between the longitudinal extending of said bed surface and horizontal plane is from −2° to +4°, and the inclination between the lateral extending of said bed surface and horizontal plane is from 0° to +15°. By reasonable setting of the angle of inclination, the material being separated spiral overturn continuously on the sorting bed under the influence of the rising air currents and the force of vibration, with the result that the light material in the upper layer is separated under the influence of weight. The material is sorted for many times during the circularly movements, the product with different content of ash can be obtained. This invention also relates to a combined dry sorting device that comprises frame, sorting bed, vibrator and air supply device. This invention further relates to an apparatus for separation that comprises a feeding device, an air supply and dedusting device and a separating device, the above mentioned sorting bed is used in the sorting device and apparatus, therefore different products with vary quantity of ash are generated according to the gravity of material, and the accuracy of separation is improved.

Claims

1. A combined dry sorting bed, comprising

a bed surface that is approximately right-angled trapezoid, wherein the hypotenuse of said sorting bed is a material discharging side and wherein the material discharging side comprises a discharging baffle;

a backboard for guiding material to roll upwards is set at the approximate right angle side of said bed surface opposite to said material discharging side, wherein a feeding side of said bed surface is wider than a waste-rock discharging end of said bed surface; and

,

a plurality of air supply ports are provided on said bed surface, wherein said sorting bed is arranged with an inclination, wherein the inclination between the longitudinal extension of said bed surface and horizontal plane is from −

2°

to +4° and

the inclination between the lateral extension of said bed surface and horizontal plane is from 0°

to +15°

.

2. The combined dry sorting bed of claim 1 wherein a plurality of strip lattice bars in parallel are positioned at intervals on said bed surface, and said lattice bars extend from the material discharging side, toward the direction of the backboard and waste-rock discharging end to a position where there is a space apart from backboard, the space constituting the waste-rock channel, wherein said bars each have a height, and wherein the heights of said bars descend in turn from said feeding side to said waste-rock discharging end.

3. The combined dry sorting bed of claim 1 wherein the angle between said lattice bars and said feeding side is from 25°

to 45°

.

4. The combined dry sorting bed of claim 1 wherein the angle between said backboard and said bed surface is from 30°

to 90°

.

5. The combined dry sorting bed of claim 1 wherein the ratio of length of said feeding side to the longitudinal length of said bed surface is from 50% to 80%.

6. The combined dry sorting bed of claim 1 wherein the height of said discharging baffle is higher than ½

of the maximum grain size of the maximum density of sorted material.

7. The combined dry sorting bed of claim 1 wherein said waste-rock discharging end is provided with a waste-rock gate.

8. A combined dry sorting device containing the sorting bed of claim 1 comprising

a frame;

a sorting bed;

a vibrator;

an air supply device, wherein said sorting bed and vibrator are hung in the frame, said vibrator is connected to said sorting bed, and said air supply device is connected to the bottom of said sorting bed, wherein said sorting bed comprises a bed surface that is approximately right-angled trapezoid with a material discharging side as the hypotenuse thereof;

a discharging baffle extending along said material discharging side;

a backboard for guiding the material to roll upwards, wherein the backboard is set at the right angle side of said bed surface opposite to said material discharging side, wherein a feeding side of said bed surface is wider than a waste-rock discharging end of said bed surface; and

,

a plurality of air supply ports provided on said bed surface;

wherein said sorting bed is arranged with an inclination, wherein the inclination α

between the longitudinal extension of said bed surface and horizontal plane is from −

2°

to +4° and

the inclination β

between the lateral extending extension of said bed surface and horizontal plane is from 0°

to +15°

.

9. The device of claim 8 wherein said air supply device comprises air chambers located under and integrally connected with said sorting bed, wherein a blower fan is connected with the air chambers through the air line, and wherein joints between the air line and air chambers are flexible joints.

10. The device of claim 9 further comprising a plurality of air chambers, each having an air valve to control air quantity.

11. The device of claim 8 wherein a plurality of strip lattice bars are positioned in parallel at intervals on said bed surface, wherein said lattice bars extend from said material discharging side toward the direction of the backboard and waste-rock discharging end to a position spaced from the backboard, to form the waste-rock channel, and wherein said bars each have a height, and wherein the heights of said bars descend in turn from said feeding side to said waste rock discharging end.

12. The device of claim 11 wherein an angle between said lattice bars and said feeding side is from 25°

to 45°

.

13. The device of claim 8 wherein an angle between said backboard and said bed surface is from 30°

to 90°

.

14. The device of claim 8 wherein a ratio of length of said feeding side to the longitudinal length of said bed surface is from 50% to 80%.

15. The device of claim 8 wherein said air supply port on said bed surface is in the form of a reverse taper.

16. The device of claim 8 wherein said bed surface is covered with wearable rubber.

17. The device of claim 8 wherein said vibrator is connected to said backboard of said sorting bed and the direction of vibration is along an across direction of the bed surface and passes through a center of gravity of said sorting bed, and forms approximately a 20°

inclination with the bed surface.

18. The device of claim 8 wherein said sorting bed and vibrator are hung respectively in the frame by an overhanging device, said overhanging device comprises a steel cable, wherein one end of said steel cable is connected to a top of said frame, and wherein the other end is connected to an adjuster in said frame by passing through a traveling block disposed on said sorting bed and a crown block in said frame, and said upper end of the steel cable is provided with damping springs.

19. The device of claim 8 wherein a material discharging device is located under said material-discharging end of said sorting bed, and wherein said material discharging device comprises discharging sluices in which an adjustable trap door is provided.

20. The device of claim 8 wherein a dust hood is further provided over at least a portion of said sorting bed, said dust hood having at least two exits.

21. An apparatus for separation comprising

a feeding device;

an air supply;

a dedusting device; and

,

a separating device, wherein said feeding device comprises a belt conveyer, a surge bin and a vibrating feeder, wherein said separating device comprises a frame, a sorting bed, a vibrator and a discharging device, wherein said air supply and said dedusting device comprise air chambers, a blower fan, an air line, a dedusting fan, a dust hood, a cyclone dust collector and a bag type collector, wherein said belt conveyer is located at the upper part of said surge bin and a bottom of the surge bin is connected with said vibrating feeder, wherein said sorting bed and said vibrator are hung in said frame by an overhanging device, said vibrator is connected with said sorting bed, and said material discharging device is located under said material-discharging end of said sorting bed, wherein an outlet of said blower fan is connected with said air chambers at a bottom of said sorting bed through said air line, wherein said dust hood is over at least a portion of said sorting bed and one of the outlets at the top of the dust hood is connected with said cyclone dust collector and is further connected with an inlet of said blower fan through the air line, and wherein an inlet of said bag type collector is connected with another outlet of said dust hood and an outlet at a top of said bag type collector is connected with an inlet of said dedusting blower fan.

22. The apparatus of claim 21 wherein said air chamber is integrated with said bed surface under said bed surface, wherein each air chamber is flexibly connected with said air supply line and a valve is provided at said inlet of each air chamber.

23. The apparatus of claim 21 wherein said material-discharging device comprises discharging sluices of fine coal, middling and waste-rock respectively and is located at a bottom of said separating device, and wherein an adjustable trap door is provided in said material receiving trough.

24. The apparatus of claim 21 wherein the outlet of said dedusting blower fan is connected to an air exhaust pipe.

25. The apparatus of claim 21 wherein said sorting bed comprises:

a bed surface having a plurality of air supply ports;

a backboard; and

,

a discharging baffle, wherein said bed surface is approximately right-angled trapezoid having a hypotenuse, wherein said hypotenuse is said material discharging end, wherein said discharging baffle is positioned in said material discharging end, wherein said backboard guides the materials to roll upwards and is set at a right angle side of said bed surface opposite to said material discharging end, wherein a feeding side of said bed surface is wider than a waste-rock discharging end of said bed surface, wherein said waste-rock end comprises a waste-rock gate, wherein said sorting bed has a first inclination and a second inclination, said first inclination extending between a longitudinal extension of said bed surface and a horizontal plane, and the second inclination extending between a lateral extension of said bed surface and said horizontal plane, wherein said first inclination is from −

2°

to +4° and

said second inclination is from 0°

to +15°

.

26. The apparatus of claim 25 wherein a plurality of strip lattice bars are positioned in parallel at intervals on said bed surface, and said lattice bars extend from said material discharging side toward the direction of the backboard and waste-rock discharging end to a position spaced from the backboard, the space comprising the waste-rock channel accordingly, and wherein said bars each have a height, and wherein the heights of said bars descend in turn from said feeding side to said waste-rock discharging end.

27. The apparatus of claim 26 wherein the angle between said lattice bars and said feeding side is from 25°

to 45°

.

28. The apparatus of claim 25 wherein the angle between said backboard and said bed surface is from 30°

to 90°

.

29. The apparatus of claim 25 wherein ratio of length of said feeding side to the longitudinal length of said bed surface is from 50% 80%.