Automatic reagent adding device for flotation of coal preparation plant

Abstract

The utility model discloses an automatic dosing device for flotation of a coal preparation plant, which belongs to the technical field of flotation of the coal preparation plant and comprises a box body, the top of the box body is fixedly connected with a chemical box, the top of the chemical box is fixedly connected with a dosing pipe, the bottom of the chemical box is fixedly connected with a connecting block, and the bottom of the chemical box and the inside of the connecting block are provided with through holes. Four clamping blocks which are annularly distributed at equal intervals are arranged in the connecting block, the four clamping blocks are in movable contact, the device further comprises an opening and closing assembly and a stirring assembly, cross-shaped stirring blades are matched with double stirring shafts, a three-dimensional disturbance flow field is formed at the bottom of the pesticide box, the pesticide agglomeration phenomenon is effectively broken, the stirring strength is automatically adjusted through a first motor, and the stirring efficiency is improved. And the four clamping blocks achieve synchronous radial movement through a gear-rack mechanism, the opening degree adjusting precision of the through holes is high, the second motor can be matched with the fluctuation range of the feeding amount of the flotation machine in real time, excessive or insufficient dosing is avoided, and therefore the clean coal yield and quality are further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal preparation plant flotation technical field more specifically, relate to a coal preparation plant flotation automatic chemical feeding device. BACKGROUND

[0002] In the coal preparation plant flotation process, reagent addition is the key link of controlling the surface properties of the slurry and promoting the separation of target minerals and impurities, and the addition of reagents in the coal preparation plant flotation process is mainly to improve the flotation efficiency, stabilize the product quality, reduce the cost and adapt to production fluctuations.

[0003] The patent with publication number CN215235050U discloses a coal preparation plant flotation automatic chemical feeding device, which comprises a fixed frame, a fixed lifting platform, a controller and a flotation machine. The fixed lifting platform is arranged on the right side of the lower surface of the fixed frame, and the upper end surface of the fixed lifting platform is movably connected with a placing box. Compared with the prior art, the utility model has the following beneficial effects: through the intelligent connection of the fixed lifting platform, the electric telescopic rod, the electric push rod, the flow switch, the distance sensor, the temperature sensor, the adjustable heating wire and the controller, it is not necessary to manually add reagents and coal into the flotation machine, which reduces the labor loss and improves the work efficiency. The adjustable heating wire, the distance sensor and the temperature sensor can also play a role in heating and preserving the flotation machine, so that the device can be stably used in winter.

[0004] Although the device has many beneficial effects, it still has the following problems: although the automatic chemical feeding device enables the device to be stably used in winter, the traditional coal preparation plant flotation chemical feeding process is mainly manual chemical feeding, which is inaccurate, such as improper control of the amount of reagents, which leads to unstable flotation effect and affects the clean coal yield and quality. Utility model content

[0005] (I) Technical problem solved

[0006] In view of the deficiencies of the prior art, the utility model provides a coal preparation plant flotation automatic chemical feeding device, which solves the above problems.

[0007] (II) Technical scheme

[0008] In order to achieve the above purpose, the utility model provides the following technical scheme: a coal preparation plant flotation automatic chemical feeding device, comprising a box body, a reagent tank is fixedly connected to the top of the box body, a chemical feeding pipe is fixedly connected to the top of the reagent tank, a connecting block is fixedly connected to the bottom of the reagent tank, through holes are formed in the bottom of the reagent tank and the connecting block, four ring-shaped equidistantly distributed clamping blocks are arranged in the connecting block, and the four clamping blocks are movably contacted, and the device further comprises:

[0009] The opening and closing assembly is arranged on the outer surface of the connecting block and is used for controlling the opening and closing of the plurality of clamping blocks.

[0010] The stirring assembly is arranged on the outer surface of the medicine box and is used for stirring the medicine in the medicine box.

[0011] Preferably, the opening and closing assembly comprises a protection block, a second motor, a gear and a rack, the rack is rotatably connected to the inside of the connecting block, the rack is arranged in a ring shape, the top of the box body is fixedly connected with the protection block, the inside of the protection block is rotatably connected with the gear, four clamping blocks are rotatably connected to the inside of the connecting block, the top of the protection block is fixedly connected with the second motor, and the output end of the second motor is fixedly connected with the gear.

[0012] Preferably, the top of the connecting block is provided with four limiting grooves which are symmetrically distributed, and the four clamping blocks are located in the limiting grooves.

[0013] Preferably, the outer surface of the connecting block is provided with a movable groove, and the gear penetrates through the movable groove and is meshedly connected with the rack.

[0014] Preferably, the stirring assembly comprises a fixed block, a first motor, a chain wheel, a chain, a stirring shaft and a stirring blade, the top of the medicine box is rotatably connected with two chain wheels, the chain is meshedly connected between the two chain wheels, the top of the medicine box is fixedly connected with the fixed block, the two chain wheels are located in the inside of the fixed block, the top of the fixed block is fixedly connected with the first motor, the output end of the first motor is meshedly connected with the adjacent chain wheel, the top inner wall of the medicine box is rotatably connected with two stirring shafts, the outer surfaces of the two stirring shafts are fixedly connected with stirring blades, and the two stirring shafts are fixedly connected with the corresponding chain wheels.

[0015] Preferably, the two stirring blades are arranged in a cross shape, and the two stirring blades are located above the bottom of the medicine box.

[0016] Preferably, the medicine adding pipe is hollow and located in the inside of the medicine box, and the top of the medicine adding pipe is hingedly connected with a protection cover.

[0017] (Three) beneficial effects

[0018] Compared with the prior art, the automatic medicine adding device for coal flotation provided by the utility model has the following beneficial effects:

[0019] The cross-shaped stirring blade cooperates with the double stirring shaft to form a three-dimensional disturbance flow field at the bottom of the medicine box, effectively breaks the agglomeration of the medicine, the first motor automatically adjusts the stirring intensity, avoids excessive emulsification of low-viscosity medicine or uneven mixing of high-viscosity medicine, the four clamping blocks realize synchronous radial movement through the gear-rack mechanism, the opening adjustment precision of the through hole, and the second motor can match the fluctuation range of the feeding amount of the flotation machine in real time, so that the overfeeding or underfeeding of the medicine is avoided, and the clean coal yield and quality are further improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the chain wheel of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the gear of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the rack of the utility model.

[0024] In the drawing: 1, box body; 2, medicine box; 3, dosing pipe; 4, fixed block; 5, first motor; 6, protection block; 7, second motor; 8, chain wheel; 9, chain; 10, gear; 11, stirring shaft; 12, stirring blade; 13, through hole; 14, clamping block; 15, connecting block; 16, limit groove; 17, rack; 18, movable groove. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0026] Please refer to Figures 1-4 The utility model provides a technical scheme:

[0027] The automatic dosing device for flotation in a coal preparation plant comprises a box body 1, the top of the box body 1 is fixedly connected with a medicine box 2, the top of the medicine box 2 is fixedly connected with a dosing pipe 3, the bottom of the medicine box 2 is fixedly connected with a connecting block 15, through holes 13 are formed in the bottom of the medicine box 2 and the inside of the connecting block 15, four annular equidistant clamping blocks 14 are arranged in the inside of the connecting block 15, the four clamping blocks 14 are movably contacted, and the automatic dosing device further comprises:

[0028] The opening and closing assembly is arranged on the outer surface of the connecting block 15 and is used for controlling the opening and closing of the plurality of clamping blocks 14.

[0029] The stirring assembly is located on the outer surface of the medicine box 2, and is used for stirring the medicine in the medicine box 2. The stirred medicine enters the box body 1 through the through hole 13.

[0030] Further, the opening and closing assembly includes a protection block 6, a second motor 7, a gear 10, and a rack 17. The rack 17 is rotatably connected to the inside of the connecting block 15 and is arranged in a ring shape. The top of the box body 1 is fixedly connected with the protection block 6. The inside of the protection block 6 is rotatably connected with the gear 10. The four clamping blocks 14 are rotatably connected to the inside of the connecting block 15. The top of the protection block 6 is fixedly installed with the second motor 7. The output end of the second motor 7 is fixedly connected with the gear 10. When the clamping blocks 14 spread outwards from the center of the connecting block 15, the opening of the through hole 13 increases. The opening and closing degree of the four clamping blocks 14 is controlled to control the flow. When it moves in the opposite direction, the channel is closed.

[0031] Further, the top of the connecting block 15 is provided with four limit grooves 16 which are symmetrically distributed. The four clamping blocks 14 are located inside the limit grooves 16, and drive the four clamping blocks 14 to move radially along the limit grooves 16.

[0032] Further, the outer surface of the connecting block 15 is provided with a movable groove 18. The gear 10 penetrates the movable groove 18 and is engaged with the rack 17. The second motor 7 drives the gear 10 to rotate, and the movable groove 18 is engaged with the ring-shaped rack 17.

[0033] Further, the stirring assembly includes a fixed block 4, a first motor 5, a chain wheel 8, a chain 9, a stirring shaft 11, and a stirring blade 12. The top of the medicine box 2 is rotatably connected with two chain wheels 8. The chain 9 is engaged between the two chain wheels 8. The top of the medicine box 2 is fixedly connected with the fixed block 4. The two chain wheels 8 are located inside the fixed block 4. The top of the fixed block 4 is fixedly installed with the first motor 5. The output end of the first motor 5 is engaged with the proximal chain wheel 8. The top inner wall of the medicine box 2 is rotatably connected with two stirring shafts 11. The outer surfaces of the two stirring shafts 11 are both fixedly connected with stirring blades 12. The two stirring shafts 11 are fixedly connected with the corresponding chain wheels 8. The first motor 5 drives the chain wheel 8 to rotate synchronously through the chain 9, and drives the two stirring shafts 11 to rotate.

[0034] Further, the two stirring blades 12 are both arranged in a "cross" shape. The two stirring blades 12 are located above the bottom of the medicine box 2. The stirring blade 12 is designed in a cross shape, forming a three-dimensional flow field above the bottom of the medicine box 2, effectively breaking the agglomeration of the medicine, and ensuring the uniformity of the medicine concentration.

[0035] Further, the medicine adding pipe 3 is hollow and located inside the medicine box 2. The top of the medicine adding pipe 3 is hingedly connected with a protection cover. The protection cover is opened. The medicine to be added is added into the medicine box 2 through the medicine adding pipe 3.

[0036] Working principle: when the staff needs to use the coal preparation plant flotation automatic dosing device, first open the protective cover and need to add the reagent through the dosing pipe 3 into the reagent tank 2, then start the first motor 5, the first motor 5 drive sprocket 8 through the chain 9 synchronous rotation, drive two stirring shaft 11 rotation, stirring blade 12 adopts cross design, form three-dimensional flow field in the reagent tank 2 bottom above, effectively break the reagent agglomeration, ensure the uniformity of reagent concentration, stirring speed can be adjusted by the first motor 5 frequency conversion, adapt to the mixing requirements of different viscosity reagent, then start the second motor 7, the second motor 7 drive gear 10 rotation, through the movable slot 18 and ring rack 17 meshing, drive four clamping blocks 14 along the limit slot 16 radial movement, when the clamping block 14 to the center of the connecting block 15 spread, the opening of through hole 13 increases, through the control four clamping block 14 opening and closing degree to control the flow, reverse movement then close the channel, then the reagent into the box 1.

[0037] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and do not limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An automatic flotation dosing device for a coal preparation plant, comprising a housing (1), characterized in that: The top of the box (1) is fixedly connected to a medicine box (2), the top of the medicine box (2) is fixedly connected to a dosing tube (3), the bottom of the medicine box (2) is fixedly connected to a connecting block (15), the bottom of the medicine box (2) and the inside of the connecting block (15) are both provided with through holes (13), the inside of the connecting block (15) is provided with four annularly distributed locking blocks (14), the four locking blocks (14) are in contact with each other, and it also includes: An opening and closing assembly, located on the outer surface of the connecting block (15), is used to control the opening and closing of the plurality of said engaging blocks (14); A stirring assembly, located on the outer surface of the medicine box (2), is used to stir the medicine inside the medicine box (2).

2. The automatic flotation dosing device for a coal preparation plant according to claim 1, characterized in that: The opening and closing assembly includes a protective block (6), a second motor (7), a gear (10), and a rack (17). The rack (17) is rotatably connected inside the connecting block (15). The rack (17) is arranged in a ring. The protective block (6) is fixedly connected to the top of the housing (1). The gear (10) is rotatably connected inside the protective block (6). The four locking blocks (14) are rotatably connected to the inside of the connecting block (15). The second motor (7) is fixedly installed on the top of the protective block (6). The output end of the second motor (7) is fixedly connected to the gear (10).

3. The automatic flotation dosing device for a coal preparation plant according to claim 1, characterized in that: The top of the connecting block (15) has four mutually symmetrically distributed limiting grooves (16), and the four engaging blocks (14) are located inside the limiting grooves (16).

4. The automatic flotation dosing device for a coal preparation plant according to claim 2, characterized in that: The outer surface of the connecting block (15) is provided with a movable groove (18), and the gear (10) passes through the movable groove (18) and meshes with the rack (17).

5. The automatic flotation dosing device for a coal preparation plant according to claim 1, characterized in that: The stirring assembly includes a fixed block (4), a first motor (5), a sprocket (8), a chain (9), a stirring shaft (11), and stirring blades (12). The top of the medicine tank (2) is rotatably connected to two sprockets (8), and a chain (9) is meshed between the two sprockets (8). The top of the medicine tank (2) is fixedly connected to the fixed block (4), and the two sprockets (8) are located inside the fixed block (4). The top of the fixed block (4) is fixedly installed with the first motor (5), and the output end of the first motor (5) is meshed with the adjacent sprocket (8). The top inner wall of the medicine tank (2) is rotatably connected to two stirring shafts (11), and stirring blades (12) are fixedly connected to the outer surfaces of the two stirring shafts (11). The two stirring shafts (11) are fixedly connected to the corresponding sprockets (8).

6. The automatic flotation dosing device for a coal preparation plant according to claim 5, characterized in that: Both stirring blades (12) are arranged in a cross shape and are located above the bottom of the medicine box (2).

7. An automatic flotation dosing device for a coal preparation plant according to claim 5, characterized in that: The dosing tube (3) is hollow and located inside the medicine tank (2), and a protective cover is hinged to the top of the dosing tube (3).

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