CN-118142693-B - Automatic grading coal dressing equipment and coal dressing method based on wet separation

CN118142693BCN 118142693 BCN118142693 BCN 118142693BCN-118142693-B

Abstract

The invention discloses automatic grading coal dressing equipment based on wet separation, which comprises a bottom plate, side plates, a first grading hopper, a second grading hopper, a first jigging mechanism, a second jigging mechanism, a flow speed adjusting mechanism and a control chip, wherein a screening and conveying mechanism for screening and conveying tail coal is arranged above the first grading hopper, the screening and conveying mechanism picks coal materials suspended in the first grading hopper according to a control instruction of the control chip and conveys the coal materials and floating liquid in the first grading hopper and the second grading hopper, the flow speed adjusting mechanism is arranged in the side plates and is respectively connected with the first grading hopper and the second grading hopper, and the cutting and tilting angles of the first grading hopper and the second grading hopper are adjusted according to the control instruction of the control chip. The invention can solve the technical problems that the existing wet coal preparation equipment cannot adjust the screening speed, the screening granularity range is large, and the screening process cannot carry out classified screening.

Inventors

WANG JING
CHEN NAN
HUANG FEIYUN
ZHANG GUODONG
LIU HAORAN
ZHANG JIUQIN

Assignees

南京业恒达智能系统有限公司

Dates

Publication Date: 20260505
Application Date: 20240321

Claims (7)

1. The automatic grading coal preparation device based on wet separation is characterized by comprising a bottom plate, side plates, a first grading hopper, a second grading hopper, a first jigging mechanism, a second jigging mechanism, a flow velocity adjusting mechanism and a control chip; the side plate is vertically arranged at one side of the bottom plate; the bottom plate is provided with a third hinge plate, one end of the second classifying hopper is hinged to the third hinge plate through a fourth hinge plate at the lower end of the second classifying hopper, and the other end of the second classifying hopper extends into a middle gap of the side plate; the system comprises a first classifying hopper, a second classifying hopper, a first hinge plate, a screening conveying mechanism, a control chip, a first hinge plate, a second hinge plate and a third hinge plate, wherein the second classifying hopper is positioned below the first classifying hopper, the length of the second classifying hopper is larger than that of the first classifying hopper, the second hinge plate is arranged on the side edge of the end part of the first classifying hopper far away from the side plate, and the first hinge plate is hinged with the first hinge plate; The first jigging mechanism and the second jigging mechanism are respectively arranged in the first classifying hopper and the second classifying hopper, and the coal materials and the floating liquid in the first classifying hopper and the second classifying hopper are screened according to the control instruction of the control chip; The flow speed regulating mechanism is arranged in the side plate and is respectively connected with the first classifying hopper and the second classifying hopper, and the inclination angles of the first classifying hopper and the second classifying hopper are regulated according to the control instruction of the control chip; The flow speed adjusting mechanism comprises a first telescopic push rod, a second telescopic push rod, a first arc-shaped track, a second arc-shaped track, a first outer frame and a second outer frame; The first outer frame and the second outer frame are respectively and vertically fixed at two ends of the side plate and are used for fixing a first telescopic push rod and a second push rod, a first connecting rod and a second connecting rod are hinged to the telescopic end of the first telescopic push rod, a third connecting rod and a fourth connecting rod are hinged to the telescopic end of the second telescopic push rod, the first connecting rod and the third connecting rod are identical and symmetrical in pointing direction, the second connecting rod and the fourth connecting rod are identical and symmetrical in pointing direction, a first motor is fixed between the first connecting rod and the third connecting rod, a second motor is fixed between the second connecting rod and the fourth connecting rod, and gears are connected to the output ends of the first motor and the second motor; The first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod are adjustable telescopic rods with nuts in the middle, teeth are arranged on the outer surfaces of the nuts, gears of the first motor are in meshed transmission with the teeth on the surfaces of the nuts of the first connecting rod and the second connecting rod through chains, and gears of the second motor are in meshed transmission with the teeth on the surfaces of the nuts of the second connecting rod and the fourth connecting rod through chains; The first arc track is arranged on one side of the first connecting rod and one side of the second connecting rod, the tail ends of the first connecting rod and the second connecting rod are arranged on the first arc track and do arc motion along the first arc track; The first classifying hopper and the second classifying hopper are respectively connected to the first arc-shaped track and the second arc-shaped track, the first connecting rod and the third connecting rod are hinged to the bottom end of the first classifying hopper, and the second connecting rod and the fourth connecting rod are hinged to the upper end of the second classifying hopper.
2. The automatic grading coal separation device based on wet separation according to claim 1, wherein the screening conveying mechanism comprises a vertical rail and a first conveying belt, the vertical rail is fixed above a first grading hopper, a first sliding groove is formed in the side end of the first grading hopper, a top plate is fixed at the upper end of the vertical rail, electric telescopic rods are arranged on two sides above the top plate, one end of the first conveying belt is hinged in the first sliding groove, the other end of the first conveying belt is hinged on the vertical rail, and the telescopic end of the electric telescopic rod is hinged on the first conveying belt through a hinge pin so as to be located on the vertical rail.
3. The automatic classifying and coal dressing equipment based on wet separation according to claim 2, wherein a second chute is arranged at the side end of the second classifying hopper, and a second conveyor belt is connected with the second chute.
4. The automatic classifying and coal dressing equipment based on wet separation according to claim 1, wherein one end of the first classifying hopper far away from the side plate is a discharging end, and the discharging end is provided with a downward inclined plate.
5. The automatic classifying and coal dressing equipment based on wet separation according to claim 4, wherein the end of the second classifying hopper far away from the side plate is a receiving end and is mutually matched with the position of the inclined plate.
6. The automatic grading coal separation device based on wet separation according to claim 1, wherein the first jigging mechanism and the second jigging mechanism comprise a third motor, hopper linings are arranged in the first grading hopper and the second grading hopper and are connected with the inner wall of the hopper through springs, half teeth are connected to the output end of the third motor, racks are connected to the half teeth in a meshed mode, and the upper ends of the racks are connected with the bottom ends of the hopper linings in a contact mode.
7. An automatic grading coal preparation method based on wet separation, characterized in that the automatic grading coal preparation method is performed based on the automatic grading coal preparation device based on wet separation as claimed in any one of claims 1-6; the automatic grading coal preparation method comprises the following steps: Mixing coal and floating liquid through a feeding end, putting the mixture into a first classification hopper, and performing first screening by starting a first jigging mechanism; after the coal materials and the floating liquid are screened in the first classification hopper, the position of a first conveying belt in a screening conveying mechanism is adjusted, and the coal materials suspended at the upper end are picked and conveyed and separated; In the screening process, the inclination of the first classifying hopper and the inclination of the second classifying hopper are adjusted by driving the flow speed adjusting mechanism so as to adjust the flow speed of the liquid.

Description

Automatic grading coal dressing equipment and coal dressing method based on wet separation Technical Field The invention belongs to the technical field of coal dressing equipment, and particularly relates to automatic grading coal dressing equipment and a coal dressing method based on wet separation. Background The common coal dressing methods are divided into wet coal dressing and dry coal dressing according to the different medium states utilized in the separation process. Wet dressing can be further divided into gravity dressing, flotation and other special dressing methods. Gravity coal separation is based on the density difference between coal and minerals in a gravity field. The jigger is one of modern gravity separation equipment, has large processing capability, wide separation granularity range and simple operation and maintenance, is widely used for separating gold, tin, titanium, hematite, iron ore, coal and other minerals as roughing or concentration, and is widely applied in the field of manganese ore dressing. The patent with publication number CN108672077A provides a jigger, which achieves the purpose of screening by staggering the moving directions of two groups of feeding boxes and discharging boxes, and the front side wall of the discharging box is movably provided with a push-pull drawer, so that mineral aggregates can be conveniently collected. However, the jigs have disadvantages in that the speed of screening cannot be adjusted due to the inability to adjust the flow rate of the suspension, the range of the sorting granularity of the jigs is large, and the screening process cannot be classified. The utility model discloses a CN116037276a patent provides a controllable coal mill developments selection powder machine of intelligent ejection of compact velocity of flow, the device is for solving the inconvenient problem of current coal mill developments selection powder machine ejection of compact velocity of flow control, is linked together through smashing district discharge gate and first discharging pipe, and the inside ejection of compact velocity of flow adjustment mechanism that is provided with of first discharging pipe, when needing to adjust ejection of compact velocity of flow, opens micro motor, and first gear drives the rotor plate and the removal hole on the rotor plate rotates under micro motor's effect, and the removal of removal hole changes the clearance between with the discharge hole to make ejection of compact velocity of flow change. The device is for solving the current insufficient problem of coal mill developments selection powder machine screening, through setting up the screening case that gathers materials in selection powder machine body bottom, and second discharging pipe discharge end is connected with the screening case that gathers materials, big granule coal ash after the screening gets into the screening incasement portion that gathers materials through the second discharging pipe, finally fall to the screening plate top, the screening plate takes place vibrations under the effect of vibrator, the slider moves in the slide bar outside this moment, the spring plays the cushioning effect, under the effect of screening plate vibrations, carry out screening once more to the coal ash of screening plate top, the granule coal ash falls into the screening case bottom that gathers materials through the screening plate and discharges from first box discharge gate, big granule coal ash is discharged from the second box discharge gate under the effect of screening plate vibrations. However, the discharge flow rate adjusting mechanism and the screening plate of the dynamic coal mill separator are not suitable for wet coal separation equipment. Disclosure of Invention The invention provides automatic classifying coal dressing equipment and a coal dressing method based on wet separation, which aim to solve the technical problems that the existing wet coal dressing equipment can not adjust screening speed, has large classifying granularity range and can not carry out classifying screening in the screening process. The technical scheme is as follows: An automatic grading coal preparation device based on wet separation comprises a bottom plate, side plates, a first grading hopper, a second grading hopper, a first jigging mechanism, a second jigging mechanism, a flow velocity adjusting mechanism and a control chip; the side plate is vertically arranged at one side of the bottom plate; the bottom plate is provided with a third hinge plate, one end of the second classifying hopper is hinged to the third hinge plate through a fourth hinge plate at the lower end of the second classifying hopper, and the other end of the second classifying hopper extends into a middle gap of the side plate; the system comprises a first classifying hopper, a second classifying hopper, a first hinge plate, a screening conveying mechanism, a control chip, a first hinge plate, a second hinge plate