Automatic reagent adding device for flotation of coal preparation plant

Abstract

The utility model discloses a coal preparation plant flotation automatic dosing device which comprises a flotation stirring barrel, a supporting frame is fixed to the outer side wall of the top of the flotation stirring barrel, a medicine box is fixed to the top of the supporting frame, a medicine outlet pipe is arranged at the bottom of the medicine box, and a dosing groove is rotationally formed in the inner side wall of the top of the flotation stirring barrel. A chemical outlet pipe is arranged on the support frame and is aligned to a chemical feeding groove, chemical feeding holes are uniformly distributed in the side wall of the chemical feeding groove, a stirring device is arranged in the flotation stirring barrel, and a rotary chemical feeding mechanism is arranged at the joint of the support frame and the chemical feeding groove. The utility model belongs to the technical field of flotation dosing of coal preparation plants, and particularly relates to an automatic flotation dosing device of a coal preparation plant.

Description

Technical Field

[0001] The utility model belongs to the technical field of flotation dosing in coal preparation plants, in particular to an automatic flotation dosing device in coal preparation plants. Background Art

[0002] Coal is a combustible black or brownish-black sedimentary rock that typically occurs in rock formations or veins in coal beds or seams. It is a very important energy source, primarily used to produce electricity or heat through combustion. Chemical flotation is required during the flotation of coal.

[0003] At present, the existing coal preparation plant flotation automatic dosing device can usually only add chemicals at specific locations, with a limited dosing range. The distribution of the chemicals in the coal slurry is often not uniform, making it difficult for them to fully contact the coal particles, resulting in unstable flotation effects. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a flotation automatic dosing device for a coal preparation plant, which effectively solves the problem that the distribution of the reagent in the coal slurry is often not uniform.

[0005] In order to achieve the above functions, the technical solution adopted by the present invention is as follows: a flotation automatic dosing device in a coal preparation plant, comprising a flotation stirring barrel, a support frame is fixed on the outer wall of the top of the flotation stirring barrel, a medicine box is fixed on the top of the support frame, a medicine outlet pipe is provided at the bottom of the medicine box, a dosing trough is rotatably provided on the inner wall of the top of the flotation stirring barrel, the outlet of the medicine outlet pipe is aligned with the dosing trough, dosing holes are evenly distributed on the side wall of the dosing trough, a stirring device is provided in the flotation stirring barrel, and a rotating dosing mechanism is provided at the connection between the support frame and the dosing trough.

[0006] Preferably, the rotating dosing mechanism includes a driving motor, a gear and an annular rack. The dosing trough is close to the height of one side of the flotation stirring barrel and extends upward from the top wall of the flotation stirring barrel. The annular rack is arranged on the outer wall of the dosing trough extending upward from the side of the flotation stirring barrel. A support plate is fixed on the outer wall of the support frame close to the side of the flotation stirring barrel. The driving motor is fixedly mounted on the support plate. The gear is fixedly connected to the output end of the driving motor, and the gear and the annular rack are meshed.

[0007] Preferably, the dosing tank is arranged in a circular shape and rotates concentrically with the annular rack.

[0008] Preferably, the bottom of the dosing tank is an inclined surface and the lowest point is near the dosing hole.

[0009] Preferably, a discharge pipe is provided on the outer side wall of the bottom of the flotation stirring barrel, and one end of the discharge pipe away from the flotation stirring barrel is connected to the flotation machine.

[0010] Preferably, a flow valve is provided on the medicine outlet pipe.

[0011] The utility model adopts the above structure to achieve the following beneficial effects: through the setting of the rotating dosing mechanism, the driving motor drives the gear to rotate, the gear drives the annular rack and the dosing trough to rotate, the dosing trough drives the dosing hole to rotate, the reagent flows out from the dosing hole, and the reagent is sprinkled to different positions, so that the reagent is fully in contact with the coal slurry, thereby improving the flotation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall structure of a coal preparation plant flotation automatic dosing device proposed in this utility model Figure 1 ;

[0013] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0014] Figure 3 This is a schematic diagram of the overall structure of a coal preparation plant flotation automatic dosing device proposed in this utility model Figure 2 ;

[0015] Figure 4 This is a cross-sectional view of an automatic flotation dosing device for a coal preparation plant proposed by the utility model;

[0016] Figure 5 for Figure 4 A partial enlarged view of point B in the middle.

[0017] Among them, 1. flotation mixing barrel, 2. support frame, 3. medicine box, 4. medicine outlet pipe, 5. dosing tank, 6. dosing hole, 7. rotary dosing mechanism, 8. support plate, 9. drive motor, 10. ring rack, 11. gear, 12. flow valve, 13. discharge pipe, 14. stirring device. DETAILED DESCRIPTION

[0018] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "center," "up," "down," "left," "right," "vertical," "horizontal," "inside," and "outside" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for the purpose of facilitating the description of the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The present invention will be further described below in conjunction with the accompanying drawings.

[0020] like Figure 1-5 As shown, the utility model proposes an automatic flotation dosing device for a coal preparation plant, comprising a flotation stirring barrel 1, a support frame 2 is fixed on the top outer wall of the flotation stirring barrel 1, a medicine box 3 is fixed on the top of the support frame 2, a medicine outlet pipe 4 is provided at the bottom of the medicine box 3, a dosing groove 5 is rotatably provided on the top inner wall of the flotation stirring barrel 1, the outlet of the medicine outlet pipe 4 is aligned with the dosing groove 5, the medicine is added to the dosing groove 5, the side wall of the dosing groove 5 is evenly provided with dosing holes 6, a stirring device 14 is provided in the flotation stirring barrel 1 to evenly mix the medicine and coal slurry, and a rotating dosing mechanism 7 is provided at the connection between the support frame 2 and the dosing groove 5 to evenly distribute the medicine so that it can fully contact with the coal particles.

[0021] like Figure 2 As shown, the rotary dosing mechanism 7 includes a drive motor 9, a gear 11 and an annular rack 10. The dosing trough 5 is close to the height of one side of the flotation stirring barrel 1 and extends upward from the top wall of the flotation stirring barrel 1. The annular rack 10 is provided on the outer side wall of the dosing trough 5 extending upward from the flotation stirring barrel 1. A support plate 8 is fixed on the outer side wall of the support frame 2 close to the flotation stirring barrel 1. The drive motor 9 is fixedly mounted on the support plate 8. The gear 11 is fixedly connected to the output end of the drive motor 9. The gear 11 and the annular rack 10 are meshed. The drive motor 9 drives the gear 11 to rotate, and the gear 11 drives the annular rack 10 and the dosing trough 5 to rotate. The dosing trough 5 drives the dosing hole 6 to rotate. The reagent flows out from the dosing hole 6, falls into the flotation stirring barrel 1 and is evenly mixed with the coal slurry.

[0022] like Figure 4 、 5 As shown, the dosing tank 5 is arranged in a circular shape and rotates concentrically with the annular rack 10. The bottom of the dosing tank 5 is an inclined surface and is at the lowest point near the dosing hole 6. The medicine is introduced into the dosing hole 6 for easy discharge.

[0023] like Figure 1 、 3 As shown, a discharge pipe 13 is provided on the outer side wall of the bottom of the flotation mixing barrel 1. One end of the discharge pipe 13 away from the flotation mixing barrel 1 is connected to the flotation machine to guide the mixed coal slurry into the flotation machine.

[0024] like Figure 1 As shown, a flow valve 12 is provided on the medicine outlet pipe 4, which can accurately adjust the flow of the medicine. By adjusting the opening of the flow valve 12, the addition flow of the medicine can be controlled, thereby achieving precise control of the dosage.

[0025] During specific use, the coal slurry is first introduced into the flotation stirring barrel 1 and the reagent is added into the medicine box 3. The reagent is added into the dosing tank 5 by opening the flow valve 12. The reagent flows out from the dosing hole 6 along the bottom of the dosing tank 5. The stirring device 14 stirs and mixes the coal slurry and the reagent. The driving motor 9 drives the gear 11 to rotate, the gear 11 drives the annular rack 10 and the dosing tank 5 to rotate, and the dosing tank 5 drives the dosing hole 6 to rotate, and the reagent is sprinkled to different positions to make the reagent fully contact with the coal slurry and improve the flotation effect.

[0026] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. An automatic flotation dosing device for a coal preparation plant, characterized by: The invention comprises a flotation stirring barrel (1), a support frame (2) is fixed on the outer wall of the top of the flotation stirring barrel (1), a medicine box (3) is fixed on the top of the support frame (2), a medicine outlet pipe (4) is provided at the bottom of the medicine box (3), a medicine dosing trough (5) is rotatably provided on the inner wall of the top of the flotation stirring barrel (1), the outlet of the medicine outlet pipe (4) is aligned with the medicine dosing trough (5), and medicine dosing holes (6) are evenly distributed on the side wall of the medicine dosing trough (5), a stirring device (14) is provided in the flotation stirring barrel (1), and a rotating medicine dosing mechanism (7) is provided at the connection between the support frame (2) and the medicine dosing trough (5); The rotary dosing mechanism (7) comprises a driving motor (9), a gear (11) and an annular rack (10); the dosing tank (5) is closely attached to the height of one side of the flotation stirring barrel (1) and extends upward from the top wall of the flotation stirring barrel (1); the annular rack (10) is arranged on the outer side wall of the dosing tank (5) extending upward from the flotation stirring barrel (1); a support plate (8) is fixed on the outer side wall of the support frame (2) close to the flotation stirring barrel (1); the driving motor (9) is fixedly mounted on the support plate (8); the gear (11) is fixedly connected to the output end of the driving motor (9); and the gear (11) and the annular rack (10) are meshed. The dosing tank (5) is arranged in a circular shape and rotates concentrically with the annular rack (10).

2. The automatic flotation dosing device for a coal preparation plant according to claim 1, characterized in that: The bottom of the dosing tank (5) is an inclined surface and is at its lowest point near the dosing hole (6).

3. The automatic flotation dosing device for a coal preparation plant according to claim 2, characterized in that: A discharge pipe (13) is provided on the outer side wall of the bottom of the flotation stirring barrel (1), and one end of the discharge pipe (13) away from the flotation stirring barrel (1) is connected to a flotation machine.

4. The automatic flotation dosing device for a coal preparation plant according to claim 3, characterized in that: The medicine outlet pipe (4) is provided with a flow valve (12).

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