Coal flotation device

Abstract

This utility model discloses a coal flotation device, comprising a housing; the housing is equipped with a first baffle and a second baffle, both of equal height; the bottom of the first baffle is fixedly connected to the bottom of the housing, and the top of the second baffle is fixedly connected to the top of the housing, with the bottom of the second baffle and the bottom of the housing being more than a few centimeters apart; a water inlet is fixedly connected to one end of the housing near the first baffle, and a liquid outlet is fixedly connected to the other end away from the water inlet; a reciprocating baffle is provided between the first and second baffles inside the housing, with the top of the baffle rotatably connected to the slider, allowing it to sweep back and forth horizontally and adjust its angle slightly according to the thickness of the floating matter. Through the wave action, the floating matter is pushed out of the housing from the slag discharge port and guided to the external collection system via an inclined feed plate and a guide plate, avoiding the accumulation of floating matter in the flotation zone and the resulting deterioration of the flow field. At the same time, the reciprocating wave action of the baffle can break up local bubble agglomeration, further improving the discharge efficiency of light impurities.

Description

Technical Field

[0001] This utility model relates to the technical field of coal beneficiation equipment, specifically to a coal flotation device. Background Technology

[0002] Coal flotation is a key process that uses the difference in hydrophobicity between the surfaces of coal and gangue to achieve separation. It is widely used in the field of clean coal processing. Traditional coal flotation devices usually introduce air bubbles into the tank and mix them with the coal slurry. This causes the hydrophobic coal particles to attach to the air bubbles and float to the surface to form a clean coal foam layer, while the hydrophilic impurities such as gangue sink or are discharged with the tail liquid.

[0003] However, impurities such as gangue and heavy particles without attached bubbles generated during the flotation process tend to accumulate at the bottom or corners of the tank. If they are not discharged in time, they will occupy the effective flotation space and interfere with the stability of the flow field, or even block the drainage channel. Some devices use reciprocating components with a single drive mode to adjust the disturbance in the flotation area, which has problems such as low motion accuracy, high energy consumption or complex control, making it difficult to accurately match the flotation requirements of different coal qualities. Utility Model Content

[0004] This invention aims to solve the above-mentioned technical problems by providing a coal flotation device.

[0005] The technical solution adopted by this utility model to solve the technical problem is: a coal flotation device, including a box; the box is provided with a first baffle and a second baffle, both of equal height; wherein, the bottom of the first baffle is fixedly connected to the bottom of the box, the top of the second baffle is fixedly connected to the top of the box, and the distance between the bottom of the second baffle and the bottom of the box is greater than centimeters; a water inlet is fixedly connected to one end of the box near the first baffle, and a liquid outlet is fixedly connected to the other end away from the water inlet; a reciprocating movable baffle is provided between the first baffle and the second baffle inside the box.

[0006] As a preferred technical solution of this utility model, a feed pipe is fixedly connected to the outer wall of the end where the water inlet of the box is located; an inclined plate is fixedly connected between the first baffle and the inner wall of the box, and the inclined surface of the inclined plate faces the bottom of the feed pipe.

[0007] As a preferred embodiment of this utility model, the top of the feeding pipe is provided with a discharge port, and the bottom is connected to the inside of the box; the inside of the feeding pipe is provided with a screw rod driven by a motor.

[0008] As a preferred technical solution of this utility model, the box body is provided with slag discharge ports on both sides of the opposite deflector plate between the first baffle and the second baffle; the inner wall of the box body is fixedly connected to the bottom of the slag discharge port with an inclined feeding plate, and the outer wall is fixedly connected to the bottom of the slag discharge port with an inclined guiding plate.

[0009] As a preferred embodiment of this utility model, a linear module is installed on the inner wall of the box relative to the dial plate; the top of the dial plate is rotatably connected to the bottom of the linear module slider.

[0010] This invention has the following advantages: Coal is directly fed into the initial sorting zone on the inlet side. After the water flows in from the inlet, it carries the coal particles. Denser gangue and heavy coal settle rapidly to the inclined plate at the bottom of the first baffle due to gravity. The inclined plate allows the settled coal to slide unimpeded along the inclined surface, avoiding accumulation and blockage, shortening the settling path of heavy particles, improving separation efficiency, and minimizing initial flow field disturbance, which is conducive to the stable progress of subsequent flotation reactions. The design of the top of the deflector plate being rotatably connected to the slider allows it to sweep back and forth in the horizontal direction and adjust the angle according to the thickness of the floating matter. Through the wave action, the floating matter is pushed out of the box from the slag discharge port and guided to the external collection system through the inclined feed plate and guide plate, avoiding the accumulation of floating matter in the flotation zone and the resulting deterioration of the flow field. At the same time, the reciprocating wave action of the deflector plate can break up local bubble agglomeration, further improving the discharge efficiency of light impurities. Attached Figure Description

[0011] Fig. 1 This is a three-dimensional structural schematic diagram of a preferred embodiment of the present invention;

[0012] Fig. 2 This is a schematic diagram of the positional structure of the inclined plate according to a preferred embodiment of the present invention;

[0013] Fig. 3 This is a schematic diagram of the connection structure of the dial plate according to a preferred embodiment of the present invention.

[0014] Explanation of reference numerals in the attached diagram: 1. Box body; 2. Water inlet; 3. No. 1 baffle; 4. No. 2 baffle; 5. Slag discharge port; 6. Guide plate; 7. Feeding plate; 8. Linear module; 9. Baffle plate; 10. Feed pipe; 11. Discharge port; 12. Liquid outlet; 13. Inclined plate. Detailed Implementation

[0015] The technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Please refer to the following: Figs. 1-3 This utility model discloses a coal flotation device, including a box body 1. Inside the box body 1, there are two baffles, namely a first baffle 3 and a second baffle 4. The first baffle 3 and the second baffle 4 are of equal height. The bottom of the first baffle 3 is fixedly connected to the bottom of the box body 1, and the top of the second baffle 4 is fixedly connected to the top of the box body 1. The distance between the bottom of the second baffle 4 and the bottom of the box body 1 is greater than 20 centimeters. A water inlet 2 is fixedly connected to the end of the box body 1 near the first baffle 3, and a liquid outlet 12 is fixedly connected to the end of the box body 1 away from the water inlet 2. Inside the box body 1, between the first baffle 3 and the second baffle 4, there is a reciprocating movable baffle 9.

[0019] A feed pipe 10 is fixedly connected to the outer wall of the box 1 near the water inlet 2. An inclined plate 13 is fixedly connected between the first baffle 3 and the inner wall of the box 1. The inclined surface of the inclined plate 13 faces the bottom of the feed pipe 10.

[0020] The bottom of the feeding pipe 10 is connected to the inside of the box 1. The inside of the feeding pipe 10 is equipped with a screw rod driven by a motor. The top of the feeding pipe 10 is provided with a discharge port 11 for feeding.

[0021] The box body 1 is located between the two sides of the first baffle 3 and the second baffle 4, and is provided with slag discharge ports 5 at the positions opposite to the deflector plate 9. The inner wall of the box body 1 is fixedly connected to the bottom of the slag discharge port 5 with an inclined feeding plate 7, and the outer side of the box body 1 is fixedly connected to the bottom of the slag discharge port 5 with an inclined guiding plate 6.

[0022] A linear module 8 is mounted on the inner wall of the housing 1 relative to the position of the dial plate 9. The linear module includes a bracket with a guide rail, a movable slide table slidably mounted on the guide rail, a lead screw system that drives the movable slide table, and a servo motor that drives the lead screw to rotate. The lead screw system consists of a lead screw and a nut, wherein the nut is fixedly connected to the movable slide table. The helical motion of the lead screw and the nut can convert the rotational motion into linear motion, thereby driving the lead screw to rotate through the servo motor. The lead screw drives the movable slide table to move on the guide rail. The top of the dial plate 9 is rotatably connected to the bottom of the slider of the linear module 8.

[0023] Specifically, when this utility model is used, the crushed raw coal is directly fed from the end of the box 1 near the water inlet 2 into the area between the first baffle 3 and the box 1. At the same time, a flotation agent solution containing air bubbles is introduced into the water inlet 2, and the water flow carries the raw coal particles into the interior of the box 1.

[0024] Particles such as gangue and heavy coal settle to the inclined plate 13 at the bottom of the first baffle 3 due to gravity, and slowly slide along the inclined surface to the bottom of the feed pipe 10. The screw rod driven by the variable frequency motor in the feed pipe 10 transports the settled coal upward and finally discharges it from the top outlet 11 to the gangue collection box, thus realizing the continuous removal of heavy materials.

[0025] Fine coal particles and light impurities with attached air bubbles float upward with the water flow, entering the area between the first baffle 3 and the second baffle 4, and further accumulating towards the top of the box 1 and the side wall of the first baffle 3. The structure of the second baffle 4 being fixedly connected to the top of the box 1 restricts the upward diffusion of floating objects, causing them to concentrate. At this time, the linear module 8 drives the deflector 9 to move back and forth, pushing the floating objects out of the slag discharge port 5 from the box 1 through the wave action. The discharged floating objects are guided by the inclined feed plate 7 and the guide plate 6, and finally fall into the collection tank, completing the separation and discharge of light impurities.

[0026] After the device has been running continuously for a period of time, the coal quality at the discharge port 11 and the slag discharge port 5 is checked to confirm that the sorting effect meets the standard. If high ash content raw coal needs to be processed, the screw speed can be increased to speed up the discharge of heavy materials, and the reciprocating frequency of the baffle plate 9 can be increased to enhance the discharge efficiency of floating materials, so as to meet the needs of different coal quality.

[0027] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

[0028] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A coal flotation device, characterized in that, The enclosure includes a housing (1); the housing (1) is equipped with a first baffle (3) and a second baffle (4) inside, both of which are of equal height; the bottom of the first baffle (3) is fixedly connected to the bottom of the housing (1), the top of the second baffle (4) is fixedly connected to the top of the housing (1), and the distance between the bottom of the second baffle (4) and the bottom of the housing (1) is greater than 20 cm; a water inlet (2) is fixedly connected to one end of the housing (1) near the first baffle (3), and a liquid outlet (12) is fixedly connected to the other end away from the water inlet (2); a reciprocating movable lever (9) is provided inside the housing (1) between the first baffle (3) and the second baffle (4).

2. The coal flotation apparatus as described in claim 1, characterized in that, A feed pipe (10) is fixedly connected to the outer wall of the end where the water inlet (2) of the box (1) is located; an inclined plate (13) is fixedly connected between the first baffle (3) and the inner wall of the box (1), and the inclined surface of the inclined plate (13) faces the bottom side of the feed pipe (10).

3. The coal flotation apparatus as described in claim 2, characterized in that, The top of the feeding pipe (10) is provided with a discharge port (11), and the bottom is connected to the inside of the box (1); the inside of the feeding pipe (10) is provided with a screw rod driven by a motor.

4. The coal flotation apparatus as described in claim 1, characterized in that, The box body (1) has slag discharge ports (5) on both sides of the baffle plate (9) between the first baffle plate (3) and the second baffle plate (4); the inner wall of the box body (1) is fixedly connected to the bottom of the slag discharge port (5) with an inclined feeding plate (7), and the outer wall is fixedly connected to the bottom of the slag discharge port (5) with an inclined guiding plate (6).

5. The coal flotation apparatus as described in claim 1, characterized in that, A linear module (8) is installed on the inner wall of the housing (1) at a position relative to the dial plate (9); the top of the dial plate (9) is rotatably connected to the bottom of the slider of the linear module (8).

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