Flotation device for coal mine production

Abstract

The invention provides a flotation device for coal mine production, and belongs to the technical field of flotation, the flotation device comprises a flotation tank, the interior of the flotation tank is of an inverted trapezoidal structure, the top of one side of the flotation tank is fixedly connected with a scraping mechanism, the top of the flotation tank is fixedly connected with a driving mechanism, and one side of the top of the flotation tank is fixedly connected with a dosing mechanism; the bottom of an inner cavity of the flotation tank is fixedly connected with an air adding assembly, the scraping mechanism comprises a first mounting frame and a second mounting frame, the first mounting frame is arranged on one side of the flotation tank, the second mounting frame is arranged on the other side of the flotation tank, and the surface of the first mounting frame is fixedly connected with a first gear; the dosing mechanism comprises a dosing cylinder, and the bottom of the dosing cylinder is fixedly connected with the flotation tank. The problem of non-uniform flowing of ore pulp can be effectively solved, it is guaranteed that the concentration of the ore pulp is uniform when the ore pulp enters the flotation tank, the flotation process is more stable, and the consistency of the concentrate quality is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of flotation, and in particular relates to a flotation device for coal mine production. Background Art

[0002] In the post-mining processing of coal, flotation, as a core selection method, is crucial to improving coal quality and increasing resource utilization. The flotation principle is to use the differences in the physical and chemical properties of the mineral surface. After adding flotation agents, the target coal minerals are selectively attached to the bubbles and then separated from the gangue. However, the current flotation devices used in coal production have exposed many serious problems, which greatly restrict production efficiency and concentrate quality.

[0003] The height and angle of the foam scraping equipment of most traditional flotation devices are fixed, which makes it difficult to adapt to the dynamic changes in the thickness and distribution of the foam layer under different working conditions. For example, when processing high-grade coal, the amount of foam generated is large and the rising speed is fast. The fixed scraping equipment cannot scrape the foam in time and comprehensively, resulting in foam accumulation and affecting the subsequent flotation process; while when processing low-grade coal, the foam layer is thin, and the scraper with a fixed height may over-scrape, causing concentrate loss. In addition, the complex coal characteristics may also lead to different foam viscosities. The existing scraping equipment lacks an effective response mechanism for foams with different viscosities, and the scraping efficiency and effect are not ideal. The dosing function also has obvious defects. At present, the common dosing methods are mostly manual control or simple timed and quantitative addition, which cannot accurately adjust the amount of reagent added according to the pulp concentration, mineral characteristics and real-time changes in the flotation process. On the one hand, insufficient addition of reagents will result in poor adhesion between minerals and bubbles, reducing the flotation recovery rate; on the other hand, excessive addition of reagents will not only cause cost waste, but also may have a negative impact on the environment. At the same time, excessive reagent residues will also affect the quality of coal concentrate.

[0004] As coal mining extends to deeper areas and complex geological conditions, coal characteristics become more complex and diverse, and production needs are constantly changing. However, existing flotation devices are difficult to perceive the dynamic changes of key parameters such as pulp concentration, liquid level, and bubble state in real time, and are even more unable to automatically and accurately adjust operating parameters based on these changes. For example, when the pulp concentration increases due to fluctuations in the properties of the raw coal, it is impossible to increase the amount of reagents added and the stirring speed in time, resulting in a deterioration in the flotation effect; in the face of the unique physical and chemical properties of coal in different mining areas, existing devices are also unable to flexibly switch control strategies, seriously affecting production efficiency and economic benefits. Summary of the invention

[0005] Based on the problems existing in the prior art, the present invention proposes a flotation device for coal mine production, which can flexibly adjust the height and angle of the foam scraping equipment, effectively adapt to the dynamic changes of the foam layer thickness and distribution under different working conditions, and achieve the effect of automatic quantitative control of dosing.

[0006] According to the technical solution of the present invention, the present invention provides a flotation device for coal mine production, which includes a flotation cell, the interior of the flotation cell is an inverted trapezoidal structure, a scraping mechanism is fixedly connected to the top of one side of the flotation cell, a driving mechanism is fixedly connected to the top of the flotation cell, a dosing mechanism is fixedly connected to one side of the top of the flotation cell, and an aeration component is fixedly connected to the bottom of the inner cavity of the flotation cell; the scraping mechanism includes a first mounting frame and a second mounting frame, the first mounting frame is arranged on one side of the flotation cell, and the second mounting frame is arranged on the other side of the flotation cell, and a first gear is fixedly connected to the surface of the first mounting frame; the dosing mechanism includes a dosing cartridge, and the bottom of the dosing cartridge is fixedly connected to the flotation cell.

[0007] Furthermore, a first motor is provided on the surface of the flotation tank, a second gear is fixedly connected to the output end of the first motor, the second gear is meshed with the first gear, and threaded rods are provided through the inner cavities of the first mounting frame and the second mounting frame.

[0008] Preferably, a threaded sleeve is threadedly connected to the surface of the threaded rod, a mounting plate is provided on one side of the first mounting frame, and one side of the mounting plate is fixedly connected to the threaded sleeve. More preferably, a housing is fixedly connected to one side of the second mounting frame, a rotating shaft is provided between the mounting plate and the housing, and a scraper is fixedly connected to the surface of the rotating shaft.

[0009] Furthermore, a second motor is fixedly connected to one side of the inner cavity of the shell, an output end of the second motor is fixedly connected to a first pulley, a second pulley is movably connected to one side of the inner cavity of the shell via a bearing, the second pulley is transmission-connected to the first pulley via a belt, and one side of the second pulley is fixedly connected to the rotating shaft.

[0010] Furthermore, a third motor is fixedly connected to the top of the dosing cartridge, a stirring shaft is fixedly connected to the output end of the third motor, and the bottom of the stirring shaft passes through the top of the dosing cartridge and extends to the inner cavity of the dosing cartridge.

[0011] Preferably, a stirring rod is fixedly connected to the bottom of the stirring shaft, one side of the dosing cartridge is connected to a first connecting pipe, one side of the first connecting pipe is connected to a pump body, one side of the pump body is connected to a second connecting pipe, and the second connecting pipe is connected to a flotation tank at a side away from the pump body.

[0012] Additionally, the driving mechanism includes a mounting seat and a connecting seat, the bottom of the mounting seat is fixedly connected to one side of the top of the flotation tank, and the bottom of the connecting seat is fixedly connected to the center of the flotation tank.

[0013] Preferably, a fourth motor is fixedly connected to the top of the mounting seat, a belt transmission assembly is fixedly connected to the output end of the fourth motor, and a transmission rod is provided at the bottom of one side of the belt transmission assembly.

[0014] More preferably, the bottom of the transmission rod passes through the inner cavity of the connecting seat and extends to the inner cavity of the flotation tank, the bottom of the connecting seat is connected to a sleeve, the bottom of the transmission rod extends to the bottom of the sleeve, and the bottom of the transmission rod is fixedly connected to an agitator.

[0015] Compared with the prior art, the advantages and positive effects of the flotation device for coal mine production of the present invention are: 1. The flotation device for coal mine production of the present invention adopts a flotation cell with an inverted trapezoidal structure, which can greatly improve the flotation efficiency. The inverted trapezoidal shape of the cell body promotes rapid aggregation and overflow of foam, significantly increases the separation area between foam and pulp, reduces the residence time of foam in the cell, prevents foam from re-mixing into the pulp, and improves the concentrate collection efficiency. At the same time, the pulp can form a stable vortex in the cell, ensuring that the mineral particles in the pulp can fully contact with the bubbles, increasing the chance of collision, and improving the flotation recovery rate. The inner wall of the flotation cell is provided with an annular guide structure and a guide hole, which effectively solves the problem of uneven pulp flow, ensures that the pulp has a uniform concentration everywhere when entering the flotation cell, makes the flotation process more stable, and improves the consistency of the concentrate quality.

[0016] 2. The flotation device for coal mine production of the present invention adopts a stirrer structure designed with multi-layer propeller-type stirring blades, which significantly enhances the stirring effect. The blades at the bottom layer are larger and have a gentle angle, which can effectively lift the bottom slurry and start the initial stirring flow, laying the foundation for subsequent mixing. The angle of the blades in the middle layer gradually increases, further stirring the slurry, promoting the full mixing of the reagent and the slurry, allowing the surface of the mineral particles to fully adsorb the reagent, and improving the activity of the flotation reaction. The blades at the top layer are smaller and have the largest angle, which evenly diffuse the mixed slurry to the entire flotation tank, ensuring that the slurry concentration and reagent distribution in the tank are uniform, eliminating local differences, and comprehensively improving the flotation effect. The serrated structure of the blade edge effectively breaks up the particle agglomerates in the slurry during the stirring process, so that the mineral particles are dispersed in the slurry with a smaller particle size, increasing the contact area between the mineral and the reagent and the bubble, improving the flotation reaction rate and effect, and improving the concentrate grade and recovery rate.

[0017] 3. The flotation device for coal mine production of the present invention adopts an annular tube with multiple air pipes, which cooperates with the annular flow stabilizer on the top, greatly optimizing the distribution of bubbles in the slurry. The annular tube evenly distributes the air pipes, so that when the gas enters the slurry from the external gas source, it can be evenly dispersed in the form of a large number of tiny bubbles, increasing the probability of collision between the bubbles and mineral particles. The flow stabilizer guides the gas to enter the slurry evenly at a specific flow rate and direction, avoiding local aggregation or sparseness of bubbles, so that the slurry in the entire flotation tank can fully contact the evenly distributed bubbles, thereby improving the stability and consistency of the flotation effect, and further improving the quality and output of the coal concentrate.

[0018] 4. The scraper design of the flotation device for coal mine production of the present invention can be adjusted in real time according to the actual thickness of the foam layer, which greatly improves the efficiency and effect of foam scraping. When the foam layer is thick, the scraper height is increased to ensure that the foam can be scraped off in time and comprehensively to avoid foam accumulation affecting subsequent flotation; when the foam layer is thin, the scraper height is lowered to prevent excessive scraping from causing concentrate loss. The scraper made of rubber material is elastic. In the process of scraping foam, it can effectively scrape foam without damaging the wall of the flotation tank, extending the service life of the flotation tank and ensuring the continuity and stability of the flotation process.

[0019] 5. The sensor module in the flotation device for coal mine production of the present invention monitors the operating parameters of the flotation device in real time and in all directions, including pulp concentration, liquid level, bubble size and temperature in the flotation tank. The controller module analyzes and processes these precise data quickly according to the preset control strategy, and accurately controls the actuator module. For example, when the pulp concentration sensor detects a change in pulp concentration, the controller module immediately controls the dosing mechanism to accurately adjust the amount of reagent added, and adjusts the stirring speed to ensure that the pulp and reagent are always in the best mixing state and maintain a good flotation effect. This precise monitoring and control avoids the errors and lags of manual experience judgment, greatly improves the stability and production efficiency of the flotation process, and effectively improves the quality and output of coal concentrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the flotation device for coal mine production according to the present invention; Figure 2 A side perspective schematic diagram of a flotation device for coal mine production according to the present invention; Figure 3 A rear perspective schematic diagram of a flotation device for coal mine production according to the present invention; Figure 4 A schematic diagram of the structure of a scraping mechanism of a flotation device for coal mine production according to the present invention; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6It is a schematic structural diagram of the gasification assembly of the flotation device for coal mine production according to the present invention; Figure 7 It is a structural schematic diagram of a flow stabilizing cover of a flotation device for coal mine production according to the present invention; Figure 8 A schematic cross-sectional view of a housing of a flotation device for coal mine production according to the present invention; Fig. 9 A schematic diagram of the structure of a medicine adding cartridge of a flotation device for coal mine production according to the present invention; Fig.10 The figure is a schematic diagram of the working principle of the intelligent control system of the flotation device for coal mine production according to the present invention.

[0021] Description of reference numerals in the accompanying drawings: 1. flotation tank; 2. scraping mechanism; 201. first mounting frame; 202. second mounting frame; 203. first gear; 204. first motor; 205. second gear; 206. threaded rod; 207. threaded sleeve; 208. mounting plate; 209. housing; 210. rotating shaft; 211. scraper; 212. second motor; 213. first pulley; 214. second pulley; 3. driving mechanism; 301. mounting seat; 302. connecting seat; 303. fourth motor; 304. belt transmission assembly; 305. transmission rod; 306. Sleeve; 307, agitator; 4, dosing mechanism; 401, dosing cartridge; 402, third motor; 403, agitator shaft; 404, agitator rod; 405, first connecting pipe; 406, pump body; 407, second connecting pipe; 5, aeration assembly; 501, gas source pipe; 502, delivery pipe; 503, flow stabilizer; 504, annular pipe; 505, air pipe; 6, air outlet; 7, discharge trough; 8, feed bin; 9, feed pipe; 10, tailings pipe; 11, fixed frame; 12, spring; 13, drug feed pipe; 14, sensor module; 15, controller module; 16, actuator module. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and therefore, the present invention is not limited to the limitations of the specific embodiments of the following disclosure. In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0024] The present invention provides a flotation device for coal mine production, which comprises a flotation cell, the interior of the flotation cell is an inverted trapezoidal structure, a scraping mechanism is fixedly connected to the top of one side of the flotation cell, a driving mechanism is fixedly connected to the top of the flotation cell, a dosing mechanism is fixedly connected to one side of the top of the flotation cell, and an aeration component is fixedly connected to the bottom of the inner cavity of the flotation cell, the scraping mechanism comprises a first mounting frame and a second mounting frame, the first mounting frame is arranged on one side of the flotation cell, the second mounting frame is arranged on the other side of the flotation cell, and a first gear is fixedly connected to the surface of the first mounting frame; the dosing mechanism comprises a dosing cartridge, and the bottom of the dosing cartridge is fixedly connected to the flotation cell.

[0025] Furthermore, a first motor is provided on the surface of the flotation tank, a second gear is fixedly connected to the output end of the first motor, the second gear is meshed with the first gear, and a threaded rod is provided through the inner cavity of the first mounting frame and the second mounting frame. Preferably, a threaded sleeve is threadedly connected to the surface of the threaded rod, a mounting plate is provided on one side of the first mounting frame, and one side of the mounting plate is fixedly connected to the threaded sleeve. A housing is fixedly connected to one side of the second mounting frame, a rotating shaft is provided between the mounting plate and the housing, and a scraper is fixedly connected to the surface of the rotating shaft; a second motor is fixedly connected to one side of the inner cavity of the housing, a first pulley is fixedly connected to the output end of the second motor, a second pulley is movably connected to one side of the inner cavity of the housing through a bearing, the second pulley is connected to the first pulley through a belt transmission connection, and one side of the second pulley is fixedly connected to the rotating shaft.

[0026] Furthermore, a third motor is fixedly connected to the top of the dosing cartridge, a stirring shaft is fixedly connected to the output end of the third motor, the bottom of the stirring shaft passes through the top of the dosing cartridge and extends to the inner cavity of the dosing cartridge, a stirring rod is fixedly connected to the bottom of the stirring shaft, one side of the dosing cartridge is connected to a first connecting pipe, one side of the first connecting pipe is connected to a pump body, one side of the pump body is connected to a second connecting pipe, and the second connecting pipe is connected to a flotation tank at a side away from the pump body.

[0027] In one embodiment, the driving mechanism includes a mounting seat and a connecting seat, the bottom of the mounting seat is fixedly connected to one side of the top of the flotation tank, the bottom of the connecting seat is fixedly connected to the center of the flotation tank, the top of the mounting seat is fixedly connected to a fourth motor, the output end of the fourth motor is fixedly connected to a belt transmission assembly, a transmission rod is provided at the bottom of one side of the belt transmission assembly, the bottom of the transmission rod passes through the inner cavity of the connecting seat and extends to the inner cavity of the flotation tank, the bottom of the connecting seat is connected to a sleeve, the bottom of the transmission rod extends to the bottom of the sleeve, and the bottom of the transmission rod is fixedly connected to an agitator. The present invention starts the fourth motor, the fourth motor drives the transmission rod to rotate through the belt transmission assembly, the transmission rod drives the agitator to rotate, and the agitator can fully stir the slurry, so that the mineral particles are better in contact with the reagent, and the flotation effect is improved.

[0028] In one embodiment, the aeration assembly includes an air source pipe, the bottom of the air source pipe is connected to the top of the flotation tank, one side of the air source pipe is connected to a delivery pipe, one side of the delivery pipe is connected to a sleeve, the bottom of the inner cavity of the flotation tank is fixedly connected to a flow stabilizer, the inner cavity of the flow stabilizer is fixedly connected to an annular tube, the top of the annular tube is connected to an air pipe, and one side of the annular tube is connected to the delivery pipe. In order to make the bubbles more evenly distributed in the slurry, the present invention is provided with an annular flow stabilizer above the annular tube, and the flow stabilizer is provided with evenly distributed guide grooves. When the gas is discharged from the air pipe, it is redistributed through the guide grooves on the flow stabilizer, and then evenly enters the slurry, so as to avoid the bubbles from gathering in local areas and increase the collision probability of the bubbles and mineral particles.

[0029] In another embodiment, the surface of the agitator is provided with air outlet holes, which are evenly spaced and arranged, and the agitator is designed with propeller-type stirring blades. The gas entering through the sleeve is discharged through the air outlet holes, so that the pulp in the entire flotation tank can fully contact the evenly distributed bubbles, thereby improving the stability and consistency of the flotation effect, and further improving the quality and yield of the coal concentrate.

[0030] In another embodiment, a discharge trough is connected to the top of one side of the flotation tank, and a guide plate is fixedly connected to the inner cavity of the discharge trough. By providing the discharge trough and the guide plate, the ore after flotation can be quickly discharged, thereby improving the discharge efficiency. In addition, the rear end of the flotation tank is connected to a feed bin, the top of the feed bin is connected to a feed pipe, and the bottom of the flotation tank surface is connected to a tailings pipe; this embodiment can conveniently transport the ore to the inside of the flotation tank for flotation processing through the feed bin and the feed pipe, and the tailings pipe will discharge the tailings after flotation.

[0031] In another embodiment, a fixing frame is fixedly connected to the surface of the first motor, and one side of the fixing frame is fixedly connected to the flotation tank 1; in this embodiment, the fixing frame is used to install the first motor, thereby ensuring the stability of the installation of the first motor. Preferably, a spring is sleeved on the surface of the threaded rod, the bottom of the spring is in contact with the threaded sleeve, and the top of the threaded rod is fixedly connected to a turning handle; in this embodiment, the spring sleeve is sleeved on the surface of the threaded rod, which can support the threaded sleeve and ensure the stability of the threaded sleeve during movement.

[0032] In another embodiment, one side of the top of the drug adding cartridge is connected to a drug inlet pipe, and a sealing cap is provided on the top of the drug inlet pipe; this embodiment can replenish the medicine inside the drug adding cartridge through the provision of the drug inlet pipe and the sealing cap, and at the same time the sealing cap improves the sealing performance of the drug adding cartridge.

[0033] The flotation device for coal mine production of the present invention further includes an intelligent control system, which includes a sensor module, a controller module and an actuator module. The output end of the sensor module is electrically connected to the input end of the controller module in a one-way manner, and the output end of the controller module is electrically connected to the input end of the actuator module in a one-way manner. The sensor module is used to monitor the operating parameters of the flotation device in real time, including a pulp concentration sensor, a liquid level sensor, a bubble size sensor, and a temperature sensor in the flotation tank. The pulp concentration sensor is used to detect the concentration of the pulp, the liquid level sensor is used to monitor the liquid level height of the pulp in the flotation tank, the bubble size sensor is used to measure the size of the bubbles, and the temperature sensor is used to monitor the temperature in the flotation tank. The controller module receives the data transmitted by the sensor module and analyzes and processes it according to a preset control strategy. For example, when the pulp concentration sensor detects that the pulp concentration is too high, the controller module controls the dosing device to increase the amount of the agent added.

[0034] The actuator module performs corresponding actions according to the instructions of the controller module, including controlling the rotation speed of the fourth motor in the driving mechanism, the inflation volume of the aeration assembly, the scraper speed of the scraping mechanism and the flow rate of the pump body in the dosing mechanism. Through the coordinated work of the intelligent control system, the flotation device can be operated automatically and intelligently, thereby improving production efficiency and the quality of coal concentrate.

[0035] The flotation device for coal mine production of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0036] like Figure 1 As shown, the present invention provides a flotation device for coal mine production, including a flotation cell 1, the interior of the flotation cell 1 is an inverted trapezoidal structure, a scraping mechanism 2 is fixedly connected to the top of one side of the flotation cell 1, a driving mechanism 3 is fixedly connected to the top of the flotation cell 1, a dosing mechanism 4 is fixedly connected to one side of the top of the flotation cell 1, and an aeration component 5 is fixedly connected to the bottom of the inner cavity of the flotation cell 1.

[0037] Furthermore, if Figure 2-Figure 10 As shown, the scraping mechanism 2 includes a first mounting frame 201 and a second mounting frame 202, the first mounting frame 201 is arranged on one side of the flotation tank 1, and the second mounting frame 202 is arranged on the other side of the flotation tank 1, the surface of the first mounting frame 201 is fixedly connected with a first gear 203, the surface of the flotation tank 1 is provided with a first motor 204, the output end of the first motor 204 is fixedly connected with a second gear 205, the second gear 205 is meshed with the first gear 203, the inner cavities of the first mounting frame 201 and the second mounting frame 202 are both penetrated with a threaded rod 206, the surface of the threaded rod 206 is threadedly connected with a threaded sleeve 207, a mounting plate 208 is arranged on one side of the first mounting frame 201, one side of the mounting plate 208 is fixedly connected with the threaded sleeve 207, one side of the second mounting frame 202 is fixedly connected with a shell 209, a rotating shaft 210 is arranged between the mounting plate 208 and the shell 209, the surface of the rotating shaft 210 is fixedly connected with a scraper 211, and one side of the inner cavity of the shell 209 is fixedly connected with the first gear 203. The second motor 212, the output end of the second motor 212 is fixedly connected to the first pulley 213, one side of the inner cavity of the housing 209 is movably connected to the second pulley 214 through a bearing, the second pulley 214 is transmission-connected to the first pulley 213 through a belt, and one side of the second pulley 214 is fixedly connected to the rotating shaft 210; the dosing mechanism 4 includes a dosing cartridge 401, the bottom of the dosing cartridge 401 is fixedly connected to the flotation tank 1, and the top of the dosing cartridge 401 is fixedly connected to the third motor 402, The output end of the third motor 402 is fixedly connected to a stirring shaft 403, the bottom of the stirring shaft 403 passes through the top of the dosing cartridge 401 and extends to the inner cavity of the dosing cartridge 401, the bottom of the stirring shaft 403 is fixedly connected to a stirring rod 404, one side of the dosing cartridge 401 is connected to a first connecting pipe 405, one side of the first connecting pipe 405 is connected to a pump body 406, one side of the pump body 406 is connected to a second connecting pipe 407, and the side of the second connecting pipe 407 away from the pump body 406 is connected to the flotation tank 1.

[0038] The specific structural arrangement, functions and technical effects of the scraping mechanism 2, the dosing mechanism 4 and the aeration assembly 5 are described in detail below.

[0039] like Figure 1 , Figure 4 and Figure 5As shown, the scraping mechanism 2 includes a first mounting frame 201 and a second mounting frame 202. The first mounting frame 201 is arranged on one side of the flotation tank 1, and the second mounting frame 202 is arranged on the other side of the flotation tank 1. The surface of the first mounting frame 201 is fixedly connected with a first gear 203. The surface of the flotation tank 1 is provided with a first motor 204. The output end of the first motor 204 is fixedly connected with a second gear 205. The second gear 205 is meshed with the first gear 203. The inner cavities of the first mounting frame 201 and the second mounting frame 202 are both penetrated with a threaded rod 206. The surface of the threaded rod 206 is threadedly connected with a threaded sleeve 207. One side of the first mounting frame 201 is provided with A mounting plate 208 is provided, one side of the mounting plate 208 is fixedly connected to the threaded sleeve 207, one side of the second mounting frame 202 is fixedly connected to a shell 209, a rotating shaft 210 is arranged between the mounting plate 208 and the shell 209, a scraper 211 is fixedly connected to the surface of the rotating shaft 210, one side of the inner cavity of the shell 209 is fixedly connected to a second motor 212, an output end of the second motor 212 is fixedly connected to a first pulley 213, one side of the inner cavity of the shell 209 is movably connected to a second pulley 214 through a bearing, the second pulley 214 is transmission-connected to the first pulley 213 through a belt, and one side of the second pulley 214 is fixedly connected to the rotating shaft 210.

[0040] The effect achieved by the entire scraping mechanism 2 is that, by setting the scraping mechanism 2, the scraping mechanism 2 is located at the top edge of the tank body of the flotation tank 1, and the scraper 211 is made of rubber material and has a certain elasticity. It can effectively scrape out the foam floating to the top of the tank body without damaging the tank wall of the flotation tank 1. At the same time, by starting the first motor 204, the first motor 204 drives the second gear 205 to rotate, the second gear 205 drives the first gear 203 to rotate, and the first gear 203 drives the first mounting frame 201 to adjust the angle, and the first mounting frame 201 can drive the mounting plate 208, The angles of the rotating shaft 210 and the scraper 211 are adjusted to adjust the scraping angle between the scraper 211 and the opening of the flotation tank 1. At the same time, by rotating the threaded rod 206, the threaded rod 206 drives the threaded sleeve 207 to move, the threaded sleeve 207 drives the mounting plate 208 to move, the mounting plate 208 drives the rotating shaft 210 to move, and the rotating shaft 210 drives the scraper 211 to move. The use height of the scraper 211 can be adjusted, and the height and angle of the scraper 211 can be adjusted in real time according to the thickness of the foam layer to ensure that the foam can be scraped off in time and effectively to avoid foam accumulation affecting the flotation effect.

[0041] The present invention starts the second motor 212, the second motor 212 drives the first pulley 213 to rotate, the first pulley 213 drives the second pulley 214 to rotate through the belt, the second pulley 214 drives the rotating shaft 210 to rotate, the rotating shaft 210 drives the scraper 211 to rotate, and the scraper 211 during the rotation process scrapes off the foam, thereby achieving the purpose of efficient discharge.

[0042] like Figure 2 , Figure 3 and Fig. 9 As shown, the dosing mechanism 4 includes a dosing cartridge 401, the bottom of which is fixedly connected to the flotation tank 1, the top of the dosing cartridge 401 is fixedly connected to a third motor 402, the output end of the third motor 402 is fixedly connected to a stirring shaft 403, the bottom of the stirring shaft 403 passes through the top of the dosing cartridge 401 and extends to the inner cavity of the dosing cartridge 401, the bottom of the stirring shaft 403 is fixedly connected to a stirring rod 404, one side of the dosing cartridge 401 is connected to a first connecting pipe 405, one side of the first connecting pipe 405 is connected to a pump body 406, one side of the pump body 406 is connected to a second connecting pipe 407, and the side of the second connecting pipe 407 away from the pump body 406 is connected to the flotation tank 1.

[0043] The effect achieved by the entire dosing mechanism 4 is that by setting up the dosing mechanism 4, the dosing cartridge 401 is used to store flotation reagents, which has a large volume and reduces the frequent dosing operations. The pump body 406 adopts a high-precision metering pump, which can accurately control the output flow rate of the reagent. One end of the pump body 406 is connected to the dosing cartridge 401 through a pipeline, and the other end is connected to the flotation tank 1 through a pipeline so that the reagent can be quickly mixed with the slurry. The flow sensor is installed on the pipeline connecting the pump body 406 and the flotation tank 1, which is used to monitor the addition flow rate of the reagent in real time. The flow sensor is connected to the sensor module 14 of the intelligent control system to transmit the monitoring data to the controller module 15 in real time.

[0044] like Figure 3 , Figure 6 and Figure 7 As shown, the aeration component 5 includes an air source pipe 501, the bottom of which is connected to the top of the flotation tank 1, one side of the air source pipe 501 is connected to a delivery pipe 502, one side of the delivery pipe 502 is connected to a sleeve 306, a flow stabilizer 503 is fixedly connected to the bottom of the inner cavity of the flotation tank 1, the inner cavity of the flow stabilizer 503 is fixedly connected to an annular tube 504, the top of the annular tube 504 is connected to an air pipe 505, and one side of the annular tube 504 is connected to the delivery pipe 502.

[0045] The effect achieved by the entire aeration component 5 is that, by setting the aeration component 5, the uniformly dispersed tiny bubbles greatly increase the contact area and collision opportunities with the mineral particles. During the flow of the slurry, the mineral particles are more likely to meet and adhere to the bubbles, thereby significantly improving the flotation recovery rate. Compared with the uneven distribution and different sizes of bubbles in the traditional aeration method, the aeration component 5 of the present invention makes the collision between the bubbles and the mineral particles more random and comprehensive, and does not miss any mineral particles that may be floated, further improving the output and quality of the coal concentrate. The stable and uniform bubble flow can improve the flow state of the slurry. Under the synergistic effect of the driving mechanism 3, the bubbles drive the slurry to form a more regular and effective circulation flow, promote the full mixing of the slurry and the reagent, enable the mineral surface to better adsorb the reagent, and enhance the flotation reaction activity. At the same time, this optimized slurry flow environment helps to reduce the precipitation and agglomeration of particles in the slurry, and maintain the continuous and efficient flotation process.

[0046] The working principle of the flotation device for coal mine production of the present invention is as follows: 1. The ore pulp first enters the interior of the feed bin 8 through the feed pipe 9. The feed bin 8 is connected to the flotation tank 1. Under the joint action of the driving mechanism 3 and the aeration component 5, the ore pulp forms a stable vortex in the tank. This vortex state makes the mineral particles in the ore pulp in a dynamic suspension state, which increases the chance of the mineral particles contacting with the bubbles and the reagents. As the ore pulp flows, the ore pulp flows upward from the bottom. The annular guide structure and the guide holes on the inner wall of the flotation tank 1 play a role in redistributing the ore pulp that comes up, ensuring that the concentration and flow rate of the ore pulp entering the upper tank body are uniform. The interior of the flotation tank 1 is an inverted trapezoidal structure. After the ore pulp enters, the flow rate slows down, which is conducive to the aggregation and floating of the foam. After the mineral particles collide with the bubbles, the mineral particles attached to the bubbles rise to the surface of the ore pulp with the bubbles to form a foam layer. The inverted trapezoidal structure increases the separation area between the foam and the ore pulp, which is convenient for the collection of the foam.

[0047] 2. By starting the fourth motor 303, the fourth motor 303 drives the transmission rod 305 to rotate through the belt drive assembly 304, and the transmission rod 305 drives the agitator 307 to rotate. The agitator 307 can fully stir the slurry, so that the mineral particles can better contact with the reagent, and the flotation effect is improved. The multi-layer propeller stirring blades use a larger area to lift the slurry at the bottom upward to form an initial stirring flow, breaking the original static state of the slurry, so that the slurry begins to circulate, and the blade angle gradually increases. As the transmission rod 305 rotates, the blades apply greater shear force to the slurry, further stir the slurry, and promote the full mixing of the reagent and the slurry. During the stirring process, the reagent molecules can be evenly dispersed in the slurry, fully contact with the surface of the mineral particles and undergo adsorption reaction, thereby enhancing the floatability of the mineral particles.

[0048] 3. In order to make the bubbles more evenly distributed in the ore pulp, a flow stabilizer 503 is arranged above the annular tube 504. When the gas is discharged from the air pipe 505, it first contacts the flow stabilizer 503. The flow stabilizer 503 guides and redistributes the bubbles, and can enter the ore pulp at a uniform speed and direction, avoiding the bubbles from gathering in a local area, ensuring that the ore pulp in the entire flotation tank 1 can fully contact the evenly distributed bubbles, increasing the collision probability between the bubbles and the mineral particles, thereby improving the flotation effect.

[0049] 4. Start the first motor 204, the first motor 204 drives the second gear 205 to rotate, the second gear 205 drives the first gear 203 to rotate, the first gear 203 drives the first mounting frame 201 to adjust the angle, the first mounting frame 201 can drive the mounting plate 208, the rotating shaft 210 and the scraper 211 to adjust the angle, so as to adjust the scraping angle between the scraper 211 and the opening of the flotation tank 1, and at the same time, by rotating the threaded rod 206, the threaded rod 206 drives the threaded sleeve 207 to move, the threaded sleeve 207 drives the mounting plate 208 to move, the mounting plate 208 drives the rotating shaft 210 to move, and the rotating shaft 210 drives the scraper 211 to move, so that the use height of the scraper 211 can be adjusted, and the height and angle of the scraper 211 can be adjusted in real time according to the thickness of the foam layer to ensure that the foam can be scraped off in time and effectively to avoid the foam accumulation affecting the flotation effect.

[0050] 5. The flotation device for coal mine production of the present invention further comprises an intelligent control system, which comprises a sensor module 14, a controller module 15 and an actuator module 16. Fig.10 As shown, by setting a sensor module 14 in the flotation device for coal mine production, the sensor module 14 includes sensors for detecting pulp concentration, liquid level, bubble size and temperature, and real-time monitoring of the operating parameters of the flotation device. The pulp concentration sensor detects the pulp concentration, the liquid level sensor monitors the pulp level, the bubble size sensor measures the bubble size, and the temperature sensor senses the temperature in the tank. These data are transmitted to the controller module 15 in real time; after receiving the sensor data or monitoring data, the controller module 15 analyzes and processes according to the preset strategy. For example, if the pulp concentration is too high, the built-in algorithm is used to calculate the amount of reagent to be added and The speed adjustment value of the driving mechanism 3 is then sent to the actuator module 16 in the form of an electrical signal. After receiving the control command, the actuator module 16 controls the actions of various parts of the flotation device. (1) Upon receiving the command to increase the speed of the driving mechanism 3, the power supply parameters are adjusted to accelerate the fourth motor 303. (2) Upon receiving the command to increase the inflation volume, the opening of the gas source valve is controlled to increase the gas flow. (3) Upon receiving the command to adjust the speed of the scraper 211, the power supply parameters of the scraper mechanism 2 are changed to adjust the speed of the scraper 211. Through such coordination, the intelligent control system adjusts the operation of the flotation device in real time to ensure that it is always in the best flotation state.

[0051] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0052] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​described in these embodiments should be interpreted as being merely exemplary, rather than as limiting. It should be noted that, unless otherwise stated, the technical terms or scientific terms used in this application should be the usual meanings understood by those skilled in the art to which this application belongs.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in other forms. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A flotation device for coal mine production, comprising a flotation cell (1), characterized in that: The interior of the flotation cell (1) is an inverted trapezoidal structure, a scraping mechanism (2) is fixedly connected to the top of one side of the flotation cell (1), a driving mechanism (3) is fixedly connected to the top of the flotation cell (1), a dosing mechanism (4) is fixedly connected to one side of the top of the flotation cell (1), and an aeration assembly (5) is fixedly connected to the bottom of the inner cavity of the flotation cell (1); The scraping mechanism (2) comprises a first mounting frame (201) and a second mounting frame (202), wherein the first mounting frame (201) is arranged on one side of the flotation tank (1), and the second mounting frame (202) is arranged on the other side of the flotation tank (1), and a first gear (203) is fixedly connected to the surface of the first mounting frame (201); The drug adding mechanism (4) comprises a drug adding cartridge (401), and the bottom of the drug adding cartridge (401) is fixedly connected to the flotation tank (1).

2. A flotation device for coal mine production according to claim 1, characterized in that: A first motor (204) is arranged on the surface of the flotation tank (1); a second gear (205) is fixedly connected to the output end of the first motor (204); the second gear (205) is meshed with the first gear (203); and a threaded rod (206) is provided through the inner cavities of the first mounting frame (201) and the second mounting frame (202).

3. A flotation device for coal mine production according to claim 2, characterized in that: A threaded sleeve (207) is threadedly connected to the surface of the threaded rod (206); a mounting plate (208) is provided on one side of the first mounting frame (201); and one side of the mounting plate (208) is fixedly connected to the threaded sleeve (207).

4. A flotation device for coal mine production according to claim 3, characterized in that: A housing (209) is fixedly connected to one side of the second mounting frame (202), a rotating shaft (210) is provided between the mounting plate (208) and the housing (209), and a scraper (211) is fixedly connected to the surface of the rotating shaft (210).

5. A flotation device for coal mine production according to claim 4, characterized in that: A second motor (212) is fixedly connected to one side of the inner cavity of the housing (209); an output end of the second motor (212) is fixedly connected to a first pulley (213); a second pulley (214) is movably connected to one side of the inner cavity of the housing (209) via a bearing; the second pulley (214) is transmission-connected to the first pulley (213) via a belt; and one side of the second pulley (214) is fixedly connected to the rotating shaft (210).

6. A flotation device for coal mine production according to claim 1, characterized in that: The top of the dosing cartridge (401) is fixedly connected to a third motor (402), the output end of the third motor (402) is fixedly connected to a stirring shaft (403), and the bottom of the stirring shaft (403) passes through the top of the dosing cartridge (401) and extends to the inner cavity of the dosing cartridge (401).

7. A flotation device for coal mine production according to claim 6, characterized in that: A stirring rod (404) is fixedly connected to the bottom of the stirring shaft (403); one side of the dosing cylinder (401) is connected to a first connecting pipe (405); one side of the first connecting pipe (405) is connected to a pump body (406); one side of the pump body (406) is connected to a second connecting pipe (407); and a side of the second connecting pipe (407) away from the pump body (406) is connected to the flotation tank (1).

8. A flotation device for coal mine production according to claim 1, characterized in that: The driving mechanism (3) comprises a mounting seat (301) and a connecting seat (302), wherein the bottom of the mounting seat (301) is fixedly connected to one side of the top of the flotation tank (1), and the bottom of the connecting seat (302) is fixedly connected to the center of the flotation tank (1).

9. A flotation device for coal mine production according to claim 8, characterized in that: A fourth motor (303) is fixedly connected to the top of the mounting seat (301), a belt transmission assembly (304) is fixedly connected to the output end of the fourth motor (303), and a transmission rod (305) is provided at the bottom of one side of the belt transmission assembly (304).

10. A flotation device for coal mine production according to claim 9, characterized in that: The bottom of the transmission rod (305) passes through the inner cavity of the connecting seat (302) and extends to the inner cavity of the flotation tank (1); the bottom of the connecting seat (302) is connected to a sleeve (306); the bottom of the transmission rod (305) extends to below the sleeve (306); and the bottom of the transmission rod (305) is fixedly connected to an agitator (307).

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