CN106076596B - A kind of rotating belt strengthens fine and presses density separation device - Google Patents

Abstract

A device for sorting fine-grained materials by rotating belts intensified by density, including a PID controller, an overflow collection tank, and a sorting column. The sorting column includes an inclined tank chamber and a vertical tank chamber; Multiple sets of belt transmission mechanisms with the same inclination direction. The multiple sets of belt transmission mechanisms include endless belts, pulleys and rollers supported at both ends of the endless belts. The bottom of the inclined tank chamber is closely connected with the top of the vertical tank chamber; the overflow collection tank is located at On the top of the inclined tank chamber, there is a material inlet on one side of the vertical tank chamber, and an inverted cone-shaped flow distribution plate is installed at the bottom of the vertical tank chamber, and a water inlet pipe is installed under the inverted cone-shaped flow distribution plate. The center is provided with an underflow discharge port, and the underflow discharge port is connected with the PID controller. It greatly speeds up the movement of the sorted materials, increases the processing capacity, provides a higher shear rate for the sorting, produces a greater lifting force, overcomes the influence of particle size in the traditional material sorting, and improves the density separation. selected effect.

Description

A rotating belt reinforced fine-grained material sorting device according to density

technical field

The invention relates to a mineral sorting device, in particular to a rotating belt reinforced fine-grained material sorting device according to density.

Background technique

With the enlargement of gravity separation equipment, the lower limit of separation continues to increase, while in flotation, the coarse particles are easy to fall off from the air bubbles, resulting in a low upper limit of flotation, so that the fine particle minerals between gravity separation and flotation cannot be effectively separated . Therefore, the efficient separation of fine-grained minerals has become the focus and hotspot of research at home and abroad, especially the separation of fine-grained coal.

Gravity separation of materials by density has become the most popular method because of its low cost, but the lower limit of separation is low for fine-grained materials because the particle settling velocity is greatly affected by particle size. The narrow-pitch inclined plate separator allows a greater rising water velocity in the inclined channel, which increases the processing capacity of the equipment and becomes an important equipment for the separation of fine-grained materials, but it still needs to be improved in terms of improving the separation effect.

Contents of the invention

Technical problem: The purpose of this invention is to overcome the deficiencies in the prior art and provide a device for separating fine-grained materials by density with simple structure, large processing capacity, high sorting efficiency and good effect.

Technical solution: The rotating belt reinforced fine-grained material sorting device according to density of the present invention includes a PID controller, an overflow collection tank and a sorting column, and the sorting column includes an inclined tank chamber and a vertical tank chamber; the described The interior of the inclined tank chamber is equipped with multiple sets of belt transmission mechanisms that are consistent with the inclination direction of the inclined tank chamber. The multiple sets of belt transmission mechanisms include endless belts, pulleys and supporting rollers supported on the upper and lower ends of the endless belt, and the belt pulleys are driven by the motor. Rotate clockwise to accelerate the flow and settlement of materials in the inclined tank chamber, the bottom of the inclined tank chamber is closely connected with the top of the vertical tank chamber; the overflow collection tank is set on the top of the inclined tank chamber, and the vertical tank chamber There is a material inlet, an inverted conical flow distribution plate is provided at the bottom of the vertical tank chamber, a water inlet pipe is provided under the inverted conical flow distribution plate, and an underflow discharge port is provided in the center of the inverted conical flow distribution plate. Connect with PID controller.

The position of the idlers in the belt transmission mechanism can be adjusted.

The rotation speed of the belt drive mechanism can be adjusted according to the actual situation of the material.

A plurality of scrapers are arranged at intervals on the surface of the endless belt.

One or more water inlet pipes are arranged along the periphery of the vertical tank chamber.

Beneficial effects, due to the adoption of the above technical scheme, the present invention not only speeds up the movement of the sorted material and improves the processing capacity of the device by setting a belt drive mechanism in the inclined tank chamber; and in order to provide a higher shear rate, produce Greater lifting force speeds up the separation speed of materials after stratification, overcomes the influence of particle size in material separation, improves the effect of material density separation, and solves the problem of insufficient separation of fine particle minerals by traditional equipment. Main advantage of the present invention has:

1. Connect the inclined tank chamber to the vertical tank chamber, so that the fluidization water velocity in the inclined tank chamber is greater than the water speed in the vertical tank chamber, and the materials are sorted at a higher water speed, which improves the processing capacity of the device;

2. The inclined plate in the inclined tank chamber is designed as a rotating belt group. When materials are sorted in the inclined tank chamber, the heavy particles that settle quickly settle on the inclined belt and slide down, and the light particles that settle slowly are suspended in the liquid. , moving upward; the belt rotates, the upper surface accelerates the downfall of heavy particles, and the lower surface accelerates the rise of light particles, which promotes the sorting and transportation of materials and increases the processing capacity of the device;

3. When the belt transmission mechanism rotates, its upper surface has a disturbing effect on the heavy particle sedimentation layer, which promotes the loosening of the sedimentation layer. At the same time, the downward movement of the upper surface increases the water flow velocity gradient on the belt surface, resulting in a high lifting force, making The particles with small density and large particle size that originally settled on the surface of the inclined plate are suspended again, and finally enter the overflow to become products, improving the separation effect of the device;

4. Using the belt transmission mechanism, according to the change of the properties of the sorting materials and the actual sorting requirements, the belt rotation speed can be adjusted to obtain different sorting effects;

5. Multiple water inlet pipes are set along the periphery of the vertical tank chamber to ensure a more even and stable rising water flow;

6. Structurally, the vertical tank chamber and the inclined tank chamber are combined to reduce the occupied area. At the same time, a belt transmission mechanism with adjustable speed is installed in the inclined tank chamber, which not only increases the processing capacity of the sorting device, but also improves the sorting device. sorting effect.

Description of drawings:

Fig. 1 is a schematic structural view of the present invention.

In the figure: 1-feed inlet, 2-vertical tank chamber, 3-inclined tank chamber, 4-overflow collection tank, 5-belt transmission mechanism, 6-flow distribution plate, 7-water inlet pipe, 8-flow regulating valve , 9-underflow discharge port, 10-roller, 11-motor, 12-PID controller.

Detailed ways

The present invention will be further described below in conjunction with the embodiment in the accompanying drawings:

The rotating belt reinforced fine-grained material separation device according to the density of the present invention is mainly composed of a PID controller 12, an overflow collection tank 4, a flow distribution plate 6, a belt transmission mechanism 5 and a separation column; the separation column includes Inclined tank chamber 3 and vertical tank chamber 2; the inside of the inclined tank chamber 3 is provided with multiple sets of belt transmission mechanisms 5 that are consistent with the inclination direction of the inclined tank chamber. Pulleys and idlers 10 at both ends, the position of idlers 10 in the belt drive mechanism 5 can be adjusted to keep the tension of the endless belt. The rotation speed of the belt drive mechanism 5 can be adjusted according to the actual situation of the material to obtain different sorting effects. The motor drive pulley drives the endless belt to rotate clockwise to accelerate the flow and settlement of materials in the inclined tank chamber; the bottom of the inclined tank chamber 3 is closely connected with the top of the vertical tank chamber 2; the overflow collection tank 4 is located in the inclined tank chamber 3, one side of the vertical tank chamber 2 is provided with a material inlet 1, and the bottom of the vertical tank chamber 2 is provided with an inverted cone-shaped flow distribution plate 6, and a water inlet pipe 7 is provided below the inverted cone-shaped flow distribution plate 6. One or more water inlet pipes 7 are arranged along the periphery of the vertical tank chamber, and are set according to needs, and two are shown in the figure, which can ensure that the rising water flow is more even and stable. A flow regulating valve 8 is installed on the water inlet pipe 7, and an underflow discharge port 9 is provided at the center of the inverted cone-shaped flow distribution plate 6, and the underflow discharge port 9 is connected with a PID controller 12. A plurality of scrapers are arranged at intervals on the surface of the endless belt, and the scrapers are right-angled plates whose bottom surface is fixed on the surface of the endless belt, and the interval distance is set according to the actual situation of sorting.

Working process: The material to be sorted is fed into the vertical tank chamber 2 from the feed inlet 1 and moves downward, and the fluidization water enters the vertical tank chamber 2 from the water inlet pipe 7 respectively, and moves upward evenly through the inverted cone-shaped flow distribution plate 6, and then The material in the vertical tank chamber 2 meets the fluidization water to produce fluidization, and rises into the inclined tank chamber 2 with the water flow, and is sorted between the endless belts in the belt drive 5; the light particles in the material remain in the suspension In the middle, under the push of the endless belt, it enters the overflow collection tank 4 faster along the inclined tank chamber 3; the heavy particles in the material settle on the endless belt and slide down, and are also driven and disturbed by the endless belt, and some of them Particles with large particle size and low density are resuspended by the lifting force under high shear speed and enter the overflow collection tank 4, and finally the particles with high density return to the vertical tank chamber 2 faster, and the underflow of 12 is controlled by the PID controller The discharge port 9 discharges.

Claims (5)

1. a kind of rotating belt strengthens fine by density separation device, including PID control instrument (12), overflow collection slot (4) With sorting column, it is characterised in that：The sorting column includes tipper room (3) and vertical channel room (2)；The tipper room (3) the multigroup belt gear (5) consistent with tipper room inclined direction, multigroup belt gear (5) bag are internally provided with It includes endless-belt, be supported on the endless-belt belt wheel at both ends and carrying roller (10) up and down, endless-belt is moved by motor transmission belt wheel belt It is rotated along up time direction, accelerates the flowing and sedimentation of material in tipper room, tipper room (3) bottom is pushed up with vertical channel room (2) Portion is closely coupled；The overflow collection slot (4) is located at the top of tipper room (3), and described vertical channel room (2) one side is equipped with Feeding mouth (1), vertical channel room (2) bottom are equipped with back taper cloth flowing plate (6), and the lower section of back taper cloth flowing plate (6) is equipped with water inlet pipe (7), the centrally disposed of back taper cloth flowing plate (6) is equipped with underflow discharge mouth (9), underflow discharge mouth (9) and PID control instrument (12) phase Even.

2. a kind of rotating belt according to claim 1, which strengthens fine, presses density separation device, it is characterised in that：Institute State carrying roller (10) position-adjustable in belt gear (5).

3. a kind of rotating belt according to claim 1, which strengthens fine, presses density separation device, it is characterised in that：Institute Stating the velocity of rotation of belt gear (5) can be adjusted according to material actual conditions.

4. a kind of rotating belt according to claim 1, which strengthens fine, presses density separation device, it is characterised in that：Institute It states and multiple scraper plates is equipped at intervals on endless-belt surface.

5. a kind of rotating belt according to claim 1, which strengthens fine, presses density separation device, it is characterised in that：Institute The water inlet pipe (7) stated sets one or more along vertical channel room periphery.