Energy-saving type coal slime separation and quality improvement device

Abstract

The invention provides an energy-saving type coal slime separation and quality improvement device which is used for solving the problems that in the prior art, a large amount of electric energy needs to be consumed, and bubbles are not evenly distributed. The coal slime sorting and upgrading device comprises a bin body, a feeding pipe is communicated with the bin body, a high-pressure water pipe is communicated with the feeding pipe, the feeding pipe comprises a horizontal section and a vertical section, the horizontal section is tangent to the inner side wall of the bin body, a bubble generating device is arranged on the bottom face of the bin body, the bubble generating device comprises an air chamber, a pneumatic motor is arranged in the air chamber, and the pneumatic motor is communicated with an air inlet pipe. An output shaft of the pneumatic motor is connected with an impeller cap, the outer side wall of the impeller cap is rotationally and hermetically connected with the bottom end of the bin body, a plurality of stirring rods are arrayed at one end, arranged in the bin body, of the impeller cap, air channels are formed in the stirring rods, and a plurality of air holes communicated with the air channels are formed in the side walls of the stirring rods. The pneumatic motor is driven by high-pressure air, rotation of the stirring rod is achieved, secondary interference sedimentation is conducted on slime water, the separation effect is improved, and the purposes of saving energy and reducing consumption are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of coal slime sorting, and in particular to an energy-saving coal slime sorting and quality-improving device. Background Art

[0002] In the field of coal processing and utilization, the sorting and quality improvement of coal slime is a crucial link. Coal slime is a by-product of the coal washing process. Its composition is complex, including clean coal, gangue and other components. The specific gravity and physical properties of these components vary greatly. Most of the existing coal slime sorting equipment uses a motor-driven stirring mechanism to achieve the mixing of coal slime and water and the distribution of bubbles through mechanical stirring. However, this traditional driving method not only consumes a lot of electricity, but also the settled materials are very easy to accumulate near the motor during long-term operation, which can easily cause equipment wear and increase maintenance costs. In addition, due to the uneven stirring intensity and bubble distribution, the coal slime sorting effect is not ideal, and the clean coal recovery rate is low, which affects the economy and environmental protection of the entire coal processing process. Summary of the invention

[0003] The present invention provides an energy-saving coal slime sorting and upgrading device, which solves the problems in the prior art that a large amount of electric energy needs to be consumed in the coal slime sorting process and bubbles are unevenly distributed.

[0004] The technical solution of the present invention is achieved in this way:

[0005] An energy-saving coal slime sorting and upgrading device comprises a silo body, which is connected to a feed pipe connected to a high-pressure water pipe, the feed pipe comprising a horizontal section and a vertical section, the horizontal section is tangent to the inner wall of the silo body, a bubble generating device is provided on the bottom surface of the silo body, the bubble generating device comprises an air chamber, an air motor is provided in the air chamber, the air motor is connected to an air intake pipe, the output shaft of the air motor is connected to an impeller cap, the outer wall of the impeller cap is rotatably sealed and connected to the bottom end of the silo body, the impeller cap is placed in an array at one end of the silo body with a plurality of stirring rods, an air channel is provided in the stirring rod, a plurality of air holes connected to the air channel are provided on the side wall of the stirring rod, the air channel is connected to the air chamber through the connecting hole of the side wall of the impeller cap, and a sealing plate corresponding to the air hole is hinged on the side wall of the stirring rod, and the sealing plate can close the air hole.

[0006] Furthermore, the bottom end of the bin body is provided with a plurality of bosses, each of which is provided with a bubble generating device, and the impeller cap is rotatably sealed and connected to the top of the boss. The distribution of the plurality of bubble generating devices can disperse the load of the equipment and reduce the wear and failure rate of a single component.

[0007] Furthermore, a filter screen is provided in the vertical section, and the water outlet of the high-pressure water pipe faces the filter screen. The setting of the filter screen can also reduce the wear and impact of hard particles in the coal slime on the internal structure of the screen, thereby extending the service life of the entire equipment.

[0008] Furthermore, the side wall of the feed pipe is connected to a horizontal discharge pipe, the filter screen bin includes a detachably fixed transverse filter cartridge in the discharge pipe, a detachably fixed vertical filter cartridge is provided at the top of the vertical section, the bottom of the vertical filter cartridge is inserted into the transverse filter cartridge, the vertical filter cartridge is slidably sealed to the transverse filter cartridge, the high-pressure water pipe is above the vertical filter cartridge, and the discharge pipe is connected to a discharge valve. The discharge pipe can conveniently discharge large particles generated by coarse filtration in a timely manner, avoid accumulation of these large particles in the bin body, and reduce the risk of blockage.

[0009] Furthermore, a rotating shaft is fixed in the transverse filter cylinder, a connecting rod is provided on the rotating shaft, one end of the connecting rod is hinged with an annular projection, and the other end is hinged with a sliding shaft, the top end of the vertical filter cylinder is slidably engaged with the vertical section through a support spring, and the annular projection can push the vertical filter cylinder out of the transverse filter cylinder, a locking hole is provided on the discharge pipe, the top end of the sliding shaft can be placed in the locking hole, an unlocking shaft slides in the locking hole, the bottom end of the unlocking shaft can be against the top end of the sliding shaft, a limiting groove is provided on the side wall of the locking hole, a locking ring is fixed on the side wall of the unlocking shaft, and the bottom surface of the locking ring is against the bottom end of the limiting groove through a limiting spring. When the transverse filter cylinder needs to be cleaned, replaced or repaired, the disassembly and installation work can be completed quickly, reducing downtime and improving production efficiency.

[0010] Furthermore, the side wall at the top of the bin is connected to an overflow port, and a cover plate is fixed on the bin below the overflow port, and a plurality of water outlets are arranged on the cover plate. The cover plate can facilitate the staff to inspect, maintain and clean the inside of the bin, thereby improving the convenience and efficiency of equipment maintenance.

[0011] Furthermore, the silo includes an upper cylinder and a mixing bottom plate, the bottom end of the upper cylinder is provided with an annular V-shaped groove, the upper cylinder is fixed by a support rod, a V-shaped ring corresponding to the V-shaped groove is provided on the mixing bottom plate, and a hydraulic rod and a lifting screw are evenly distributed on the bottom end of the mixing bottom plate. The split design allows the upper cylinder and the mixing bottom plate to be disassembled independently, which is convenient for maintenance, cleaning and replacement of the mixing bottom plate, and improves the operability and maintenance efficiency of the equipment.

[0012] Furthermore, a plurality of pneumatic telescopic rods are fixed on the bottom surface of the warehouse body, a scraper is fixed on the top of the pneumatic telescopic rod, the outer side of the scraper is against the inner side of the warehouse body, and the pneumatic telescopic rod includes a hollow telescopic rod, an air bag is arranged inside the hollow telescopic rod, and the air bag is connected to the air inlet pipe. While the air inlet pipe provides power to the pneumatic motor, the expansion and contraction of the air bag is controlled by air pressure, so that the scraper is automatically raised and lowered and the inner wall of the warehouse body is cleaned, which reduces the need for manual intervention and improves work efficiency.

[0013] Furthermore, the diameter of the air hole on the stirring rod gradually decreases as it approaches the impeller cap, which helps to ensure that the air flow and pressure around the stirring rod remain relatively stable and avoid excessive or insufficient concentration of bubbles in local areas.

[0014] Furthermore, a permanent magnet is fixed on the side of the stirring rod away from the air hole, and the sealing plate can be attracted by the permanent magnet. The adsorbed magnetic impurities can be regularly collected and recycled, which not only reduces the generation of waste, but also improves the recycling rate of resources.

[0015] Furthermore, the bottom surface of the mixing base is connected with a plurality of universal wheels. By providing the universal wheels, the mixing base is more convenient to move, and the staff can complete the installation, adjustment and maintenance of the equipment more quickly, thereby improving the overall work efficiency.

[0016] The beneficial effects that this technical solution can produce: The present invention uses high-pressure water flow to disperse the coal slurry and fully mix it with the water flow to form coal slurry water, which helps to effectively separate different components in the coal slurry (such as clean coal, gangue, etc.) based on the difference in specific gravity. The use of high-pressure air to drive the pneumatic motor not only realizes the rotation of the stirring rod and performs secondary interference sedimentation on the coal slurry water, thereby improving the sorting effect, but also effectively converts the kinetic energy of the air into mechanical energy, avoiding the energy consumption of traditional motor drives and achieving the goal of energy saving and consumption reduction. The rotation of the stirring rod and the high-pressure air to open the sealing plate to release the bubbles can ensure that the bubbles are evenly distributed at the bottom of the bin, which helps the floating of light components such as clean coal and further promotes the effective sorting of coal slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 A top view of the present invention;

[0020] Figure 3 for Figure 2 A-direction sectional view;

[0021] Figure 4 for Figure 3 A partial enlarged schematic diagram of point C in the middle;

[0022] Figure 5 It is an exploded cross-sectional view of the present invention;

[0023] Figure 6 for Figure 5 A partial enlarged schematic diagram of point D in the middle;

[0024] Figure 7 for Figure 2 The B-direction sectional view of the middle part;

[0025] Figure 8 for Figure 7 Schematic diagram of the three-dimensional structure;

[0026] Fig. 9 for Figure 7 A partial enlarged schematic diagram of point E in the middle;

[0027] Fig.10 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0028] Fig.11 It is a cross-sectional view of a hollow telescopic rod.

[0029] Wherein: 1. bin body, 2. high pressure water pipe, 3. horizontal section, 4. vertical section, 5. air chamber, 6. pneumatic motor, 7. impeller cap, 8. stirring rod, 9. air duct, 10. air hole, 11. sealing plate, 12. boss, 13. filter screen bin, 14. transverse filter cartridge, 15. vertical filter cartridge, 16. discharge pipe, 17. overflow port, 18. cover plate, 19. stirring bottom plate, 20. upper cylinder, 21. V-shaped groove, 22. V-shaped ring, 23. hydraulic rod, 24. lifting screw, 25. permanent magnet, 26. universal wheel, 27. discharge pipe, 28. rotating shaft, 29. connecting rod, 30. annular protrusion, 31. sliding shaft, 32. unlocking shaft, 33. limit spring, 34. support spring, 35. scraper, 36. hollow telescopic rod, 37. air bag. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figure 1-6As shown, the present invention provides an energy-saving coal slime sorting and upgrading device, including a silo 1, a feed pipe connected to the silo 1, a high-pressure water pipe 2 connected to the feed pipe, a horizontal section 3 and a vertical section 4, the horizontal section 3 is tangent to the inner wall of the silo 1, a bubble generating device is provided on the bottom surface of the silo 1, and the bubble generating device includes an air chamber 5, an air motor 6 is provided in the air chamber 5, the air motor 6 is connected to the air inlet pipe, the output shaft of the air motor 6 is connected to an impeller cap 7, the outer wall of the impeller cap 7 is rotatably sealed and connected to the bottom end of the silo 1, and one end of the impeller cap 7 placed in the silo 1 is arrayed with a plurality of stirring rods 8, an air channel 9 is provided in the stirring rod 8, and a plurality of air holes 10 connected to the air channel 9 are provided on the side wall of the stirring rod 8, the air channel 9 is connected to the air chamber 5 through the connecting hole of the side wall of the impeller cap 7, and a sealing plate 11 corresponding to the air hole 10 is hinged on the side wall of the stirring rod 8, and the sealing plate 11 can close the air hole 10. The air motor 6 is a prior art.

[0032] During use, the coal slime is pushed into the vertical section 4, and at the same time, a high-pressure water flow is introduced into the vertical section 4 through the high-pressure water pipe 2. The high-pressure water flow can disperse the coal slime slurry in the vertical section 4, and can fully mix the coal slime slurry and the water flow to form coal slime water. Then the coal slime water will enter the silo body 1 from the horizontal section 3. Since the horizontal section 3 is tangent to the inner wall of the silo body 1, the coal slime water can form a rotating flow along the inner wall of the silo body 1, which is helpful for different components in the coal slime, such as clean coal, gangue, etc., to be effectively separated based on the difference in specific gravity, thereby improving the coal slime sorting efficiency and product quality. At the same time, it can drive the coal slime water in the silo body 1 to rotate, thereby achieving the effect of interfering with the sedimentation of the coal slime water. When bubbles are needed for flotation, high-pressure air is introduced into the air inlet pipe, and the high-pressure air drives the pneumatic motor 6 to rotate. The pneumatic motor 6 drives the stirring rod 8 to rotate through the impeller cap 7. At the same time, the air discharged by the pneumatic motor 6 enters the air chamber 5, and enters the air duct 9 along the air chamber 5 and the connecting hole. Finally, the high-pressure air pushes the sealing plate 11 and enters the silo 1 through the air hole 10, thereby forming continuous bubbles in the coal slime water. By using high-pressure air to drive the pneumatic motor 6, not only the rotation of the stirring rod 8 is realized, the coal slime water is subjected to secondary interference sedimentation, and the sorting effect is improved, but also the kinetic energy of the air is effectively converted into mechanical energy, avoiding the energy consumption of traditional motor drive. By rotating the stirring rod 8 and releasing bubbles by pushing the sealing plate 11 with high-pressure air, it can be ensured that the bubbles are evenly distributed at the bottom of the silo 1, which helps the floating of light components such as clean coal, and further promotes the effective sorting of coal slime. The hinged connection between the stirring rod 8 and the sealing plate 11 enables the sealing plate 11 to be flexibly opened and closed under the action of high-pressure air, thereby ensuring the continuous release of bubbles and the uniformity of bubble distribution.

[0033] like Figure 5As shown, the bottom end of the silo 1 is provided with a plurality of bosses 12, each of which is provided with a bubble generating device, and the impeller cap 7 is rotatably sealed and connected to the top of the boss 12. The plurality of bubble generating devices work simultaneously, which can ensure that a large number of bubbles are generated at the bottom of the entire silo 1 and are evenly distributed, which helps to make it easier to separate the clean coal in the coal slime water from the coal slime water, thereby improving the efficiency and accuracy of sorting. The bosses 12 can prevent large particles in the coal slime from accumulating near the impeller cap 7, thereby preventing the large particles from rubbing against the stirring rod 8 and the impeller cap 7, and reducing the wear and failure rate of the equipment.

[0034] like Figure 2 , 3 As shown in Figures 7 and 8, a filter screen bin 13 is provided in the vertical section 4, and the water outlet of the high-pressure water pipe 2 faces the filter screen bin 13. The setting of the filter screen bin 13 can perform preliminary filtering on the coal slurry entering the bin body 1, remove large impurities and foreign matter therein, help protect the subsequent sorting and sedimentation process, prevent large pieces of matter from damaging or clogging the equipment, and improve the purity of the coal slurry, laying a good foundation for subsequent sorting and quality improvement. Since the filter screen bin 13 performs preliminary filtering on the coal slurry, the large impurities entering the bin body 1 are greatly reduced, so the sediment at the bottom of the bin body 1 will also be reduced accordingly, reducing the frequency and difficulty of regular cleaning of the bottom of the bin body 1, saving manpower and material costs.

[0035] like Figure 3 , 5As shown in Figure 7, the side wall of the feed pipe is connected to a horizontal discharge pipe 16, the filter screen bin 13 includes a transverse filter cartridge 14 that is detachably fixed in the discharge pipe 16, and a vertical filter cartridge 15 is detachably fixed at the top of the vertical section 4. The bottom end of the vertical filter cartridge 15 is inserted into the transverse filter cartridge 14, and the vertical filter cartridge 15 is connected to the transverse filter cartridge 14 in a sliding and sealing manner. The high-pressure water pipe 2 is above the vertical filter cartridge 15, and the discharge pipe 16 is connected to a discharge valve. During the installation process, the transverse filter cartridge 14 is placed in the discharge pipe 16, and then the vertical filter cartridge 15 is placed in the vertical section 4, and the bottom end of the vertical filter cartridge 15 is inserted into the transverse filter cartridge 14. The sliding and sealing connection between the transverse filter cartridge 14 and the vertical filter cartridge 15 can be sealed by an existing rubber seal ring, etc., to prevent large impurities from leaking from the joint between the transverse filter cartridge 14 and the vertical filter cartridge 15. The discharge pipe 16 allows large particles to be easily discharged through the discharge valve, reducing the difficulty of cleaning caused by material accumulation. At the same time, the horizontal filter cartridge 14 and the vertical filter cartridge 15 can be detachably fixed. When one of the filter cartridges is blocked or needs to be cleaned, it can be easily removed for cleaning or replacement, which greatly simplifies the maintenance of the equipment. Due to the detachability of the filter cartridge, users can choose filter cartridges of different materials, pore sizes or structures for replacement according to actual material characteristics and filtering requirements to adapt to different application scenarios, thereby enhancing the flexibility and applicability of the equipment. The high-pressure water pipe 2 is located above the vertical filter cartridge 15, which can ensure that the water flow can evenly flush the surface of the filter cartridge, helping to prevent material accumulation and clogging on the filter cartridge. At the same time, the setting of the discharge valve allows users to control the discharge of materials at any time as needed, optimizing the operation process.

[0036] like Figure 7-9 As shown, a rotating shaft 28 is fixed in the transverse filter cylinder 14, and a connecting rod 29 is passed through the rotating shaft 28. One end of the connecting rod 29 is hinged with an annular protrusion 30, and the other end is hinged with a sliding shaft 31. The top end of the vertical filter cylinder 15 is slidably engaged with the vertical section 4 through a supporting spring 34. The annular protrusion 30 can push the vertical filter cylinder 15 out of the transverse filter cylinder 14. A locking hole is passed through the discharge pipe 16. The top end of the sliding shaft 31 can be placed in the locking hole. An unlocking shaft 32 slides in the locking hole. The bottom end of the unlocking shaft 32 can be abutted against the top end of the sliding shaft 31. A limiting groove is provided on the side wall of the locking hole. A locking ring is fixed to the side wall of the unlocking shaft 32. The bottom surface of the locking ring is abutted against the bottom end of the limiting groove through a limiting spring 33.

[0037] During use, the vertical filter cartridge 15 and the transverse filter cartridge 14 will have different levels of wear. When the vertical filter cartridge 15 needs to be quickly disassembled, the unlocking shaft 32 is pressed. The unlocking shaft 32 overcomes the elastic force of the spring through the locking ring and moves downward. The unlocking shaft 32 pushes the sliding shaft 31 out of the locking hole and drives the end of the connecting rod 29 to move downward through the sliding shaft 31. The other end of the connecting rod 29 is supported by the rotating shaft 28 and can move upward. The connecting rod 29 pushes the vertical filter cartridge 15 out of the transverse filter cartridge 14 through the annular protrusion 30. After that, the transverse filter cartridge 14 can be rotated to make the bottom end of the vertical filter cartridge 15 overcome the elastic force of the supporting spring 34 and move upward, and resist against the outer wall of the transverse filter cartridge 14. At this time, the transverse filter cartridge 14 can be directly pulled out to achieve the effect of quickly disassembling the transverse filter cartridge 14. When it is necessary to install the transverse filter cartridge 14 separately, the transverse filter cartridge 14 is directly inserted into the discharge pipe 16, so that the bottom end of the vertical filter cartridge 15 overcomes the elastic force of the support spring 34 and moves along the outer wall of the transverse filter cartridge 14. When the sliding shaft 31 corresponds to the locking hole, the vertical filter cartridge 15 will slide into the transverse filter cartridge 14 and apply pressure to the annular protrusion 30. The sliding shaft 31 is placed in the locking hole by the downward movement of the annular protrusion 30, so as to achieve the effect of quickly installing the transverse filter cartridge 14. The placement of the sliding shaft 31 in the locking hole provides an axial limit for the transverse filter cartridge 14 to prevent accidental falling off during normal operation, thereby enhancing the stability of the system. The vertical filter cartridge 15 and the transverse filter cartridge 14 that can be quickly disassembled and installed respectively greatly reduce the time required for equipment maintenance and replacement of the filter cartridges, thereby improving work efficiency. The transverse filter cartridge 14 can be conical, and the small end is close to the vertical filter cartridge 15, so as to facilitate the installation of the transverse filter cartridge 14.

[0038] like Figure 1 , 3 As shown in Figure 5, the side wall at the top of the silo 1 is connected to an overflow port 17, and a cover plate 18 is fixed on the silo 1 below the overflow port 17, and a plurality of water outlets are arranged on the cover plate 18. The cover plate 18 can be in the form of a filter screen, and the overflow port 17 allows the coal slurry water to be discharged at a fixed point and in an orderly manner, avoiding the disorderly overflow of the coal slurry water in the silo 1, thereby improving the discharge efficiency and the accuracy of the discharge. It helps to reduce the pollution of the silo water to the silo 1 and its surrounding environment, and keep the working environment clean and hygienic. The cover plate 18 effectively blocks the external large particles of impurities from entering the silo 1, avoiding the interference of impurities on the filtration and treatment process of the coal slurry water, and ensuring the stability of the treatment effect and product quality. It not only plays a role in preventing large particles of impurities from entering, but also forms a safety barrier to prevent the staff from slipping and falling into the silo 1 during the operation, thereby ensuring the personal safety of the staff.

[0039] like Figure 1 , 3As shown in Figures 5 and 6, the silo 1 includes an upper cylinder 20 and a stirring base 19. An annular V-shaped groove 21 is provided at the bottom end of the upper cylinder 20. The upper cylinder 20 is fixed by a support rod. A V-shaped ring 22 corresponding to the V-shaped groove 21 is provided on the stirring base 19. A hydraulic rod 23 and a lifting screw 24 are evenly distributed at the bottom end of the stirring base 19. The hydraulic rod 23 and the lifting screw 24 are both prior art. When the stirring base 19 needs to be disassembled, the hydraulic rod 23 and the lifting screw 24 are controlled to retract, so that the stirring base 19 can be separated from the upper cylinder 20. By setting the split upper cylinder 20 and the stirring base 19, the stirring base 19 can be easily disassembled, and then the stirring base 19 can be conveniently cleaned, and the bubble generating device can be easily maintained, thereby reducing the maintenance cost. When the mixing base plate 19 needs to be installed, the rapid lifting of the hydraulic rod 23 is first controlled to make the V-shaped groove 21 and the V-shaped ring 22 correspond to each other. Through the cooperation of the V-shaped groove 21 and the V-shaped ring 22, the contact area between the upper cylinder 20 and the mixing base plate 19 can be increased, and the sealing between the two can be improved by the complementary shape, which effectively prevents material leakage and ensures the continuity and stability of the processing process. When the hydraulic rod 23 lifts the mixing base plate 19, the lifting screw 24 extends. Through the self-locking property of the screw, it can provide a stable support for the mixing base plate 19, effectively prevent the risk of leakage caused by shaking or vibration, and further improve the reliability and safety of the equipment. Through the rapid rising function of the hydraulic rod 23, the lifting screw 24 is moved, and the moving speed of the lifting screw 24 can be increased. The sealing between the V-shaped groove 21 and the V-shaped ring 22 can be further improved by a sealing ring. Through the cooperation of the lifting screw 24 and the hydraulic rod 23, it can adapt to the ground with different slopes to ensure the stable sealing connection between the mixing base plate 19 and the upper cylinder 20.

[0040] like Fig.10 , 11 As shown, a plurality of pneumatic telescopic rods are fixed on the bottom surface of the warehouse body 1, a scraper 35 is fixed to the top of the pneumatic telescopic rod, the outer side of the scraper 35 is against the inner side of the warehouse body 1, and the pneumatic telescopic rod includes a hollow telescopic rod 36, an air bag 37 is arranged in the hollow telescopic rod 36, and the air bag 37 is connected to the air inlet pipe.

[0041] During use, when the air inlet pipe provides power to the pneumatic motor, a portion of the air pressure from the air inlet pipe will enter the airbag 37, and the airbag 37 will drive the hollow telescopic rod 36 to extend, thereby raising the scraper 35 to a certain height to prevent interference with the sorting operation. As long as the air inlet pipe provides air pressure to the pneumatic motor, the scraper 35 will always remain at the highest position under the support of the airbag 37. When the flotation operation is completed, the air inlet pipe stops providing air pressure, and the airbag 37 will slowly release the internal air pressure, causing the scraper 35 to slowly descend and clean the inner wall of the bin body, reducing the need for manual cleaning and improving work efficiency.

[0042] like Figure 5 As shown, the bottom surface of the silo 1 is an inclined surface, and the bottom end of the inclined surface is connected to a discharge pipe 27, and a discharge valve is provided on the discharge pipe 27. The design of the inclined surface allows the materials deposited at the bottom of the silo 1 to naturally slide and accumulate toward the bottom end of the inclined surface under the action of gravity. When the materials need to be discharged, only the discharge valve needs to be opened, and the deposited materials can be discharged smoothly through the discharge pipe 27, which greatly simplifies the discharge process and improves the discharge efficiency. Since the materials can be discharged smoothly, it is not easy for the materials to accumulate inside the silo 1, which helps to extend the service life of the equipment, reduce maintenance costs, and improve overall work efficiency.

[0043] like Figure 4 As shown, the diameter of the air hole 10 on the stirring rod 8 gradually decreases as it gradually approaches the impeller cap 7. By gradually reducing the diameter of the air hole 10, the air can be gradually compressed and guided in the process of flowing along the air channel 9, which helps to form a more uniform distribution of bubbles in the entire bin body 1, thereby improving the efficiency and effect of sorting. The evenly distributed bubbles can more effectively contact the particles in the coal slime, improve the floating speed and separation efficiency of the clean coal, and because the bubble distribution is more even, the amount of air required to achieve the same sorting effect can be reduced, thereby reducing energy consumption.

[0044] like Figure 6 As shown, a permanent magnet 25 is fixed to the side of the stirring rod 8 away from the air hole 10, and the sealing plate 11 can be attracted by the permanent magnet 25. The permanent magnet is a prior art. By setting the permanent magnet 25, an attraction force can be applied to the sealing plate 11, which effectively prevents the problem of water ingress into the air chamber 5 caused by the sealing plate 11 being accidentally opened, thereby ensuring the normal operation of the equipment and the quality of material processing. The permanent magnet 25 has a strong adsorption capacity and can adsorb magnetic impurities contained in the coal slime water, such as iron powder, etc., thereby reducing the wear and blockage of these impurities on the equipment, improving the operating efficiency and stability, not only helping to purify materials and improve product quality, but also recycling these impurities to achieve effective utilization of resources and energy conservation.

[0045] like Figure 3 , 5 As shown, the bottom surface of the mixing base 19 is connected with a plurality of universal wheels 26. The universal wheels 26 are prior art. The design of the universal wheels 26 enables the mixing base 19 to be easily moved on the ground, which can greatly simplify the operation process and improve work efficiency whether it is equipment installation, commissioning or daily maintenance. At the same time, the universal wheels 26 can also help the mixing base 19 to be quickly and accurately positioned to the designated position to ensure the stability and accuracy of the equipment. It reduces the physical burden of the operator, especially when the mixing base 19 needs to be frequently moved or adjusted, which helps to reduce labor intensity and reduce the risk of work-related injuries.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An energy-saving coal slime sorting and upgrading device, comprising a bin body (1), characterized in that: The silo (1) is connected with a feed pipe, the feed pipe is connected with a high-pressure water pipe (2), the feed pipe comprises a horizontal section (3) and a vertical section (4), the horizontal section (3) is tangent to the inner wall of the silo (1), a bubble generating device is provided on the bottom surface of the silo (1), the bubble generating device comprises an air chamber (5), an air motor (6) is provided in the air chamber (5), the air motor (6) is connected with an air intake pipe, the output shaft of the air motor (6) is connected with an impeller cap (7), the outer wall of the impeller cap (7) is connected to the silo The bottom end of the impeller cap (7) is rotatably sealed and connected to the chamber (1); one end of the impeller cap (7) placed in the chamber (1) is arrayed with a plurality of stirring rods (8); an air passage (9) is arranged in the stirring rod (8); a side wall of the stirring rod (8) is provided with a plurality of air holes (10) connected to the air passage (9); the air passage (9) is connected to the air chamber (5) through the connecting holes in the side wall of the impeller cap (7); a sealing plate (11) corresponding to the air holes (10) is hinged on the side wall of the stirring rod (8); and the sealing plate (11) can close the air holes (10).

2. The energy-saving coal slime separation and upgrading device according to claim 1 is characterized in that: The bottom end of the bin body (1) is provided with a plurality of bosses (12), each of which is provided with a bubble generating device, and the impeller cap (7) is rotatably sealedly connected to the top of the boss (12).

3. The energy-saving coal slime separation and upgrading device according to claim 1 is characterized in that: A filter screen bin (13) is provided in the vertical section (4), and the water outlet of the high-pressure water pipe (2) faces the filter screen bin (13).

4. The energy-saving coal slime separation and upgrading device according to claim 3 is characterized in that: The side wall of the feed pipe is connected to a horizontal discharge pipe (16); the filter screen bin (13) includes a transverse filter cartridge (14) that is detachably fixed in the discharge pipe (16); a vertical filter cartridge (15) is detachably fixed at the top of the vertical section (4); the bottom end of the vertical filter cartridge (15) is inserted into the transverse filter cartridge (14); the vertical filter cartridge (15) is slidably and sealedly connected to the transverse filter cartridge (14); the high-pressure water pipe (2) is above the vertical filter cartridge (15); and the discharge pipe (16) is connected to a discharge valve.

5. The energy-saving coal slime separation and upgrading device according to claim 4 is characterized in that: A rotating shaft (28) is fixed in the transverse filter cylinder (14), and a connecting rod (29) is passed through the rotating shaft (28). One end of the connecting rod (29) is hinged with an annular protrusion (30), and the other end is hinged with a sliding shaft (31). The top end of the vertical filter cylinder (15) is slidably engaged with the vertical section (4) through a supporting spring (34). The annular protrusion (30) can push the vertical filter cylinder (15) out of the transverse filter cylinder (14). A locking hole is passed through the discharge pipe (16). The top end of the sliding shaft (31) can be placed in the locking hole. An unlocking shaft (32) slides in the locking hole. The bottom end of the unlocking shaft (32) can abut against the top end of the sliding shaft (31). A limiting groove is provided on the side wall of the locking hole. A locking ring is fixed to the side wall of the unlocking shaft (32). The bottom surface of the locking ring abuts against the bottom end of the limiting groove through a limiting spring (33).

6. The energy-saving coal slime sorting and upgrading device according to claim 1 is characterized in that: The side wall at the top of the bin body (1) is connected to an overflow port (17), a cover plate (18) is fixed on the bin body (1) below the overflow port (17), and a plurality of water outlets are provided on the cover plate (18).

7. The energy-saving coal slime separation and upgrading device according to claim 1 is characterized in that: The silo (1) comprises an upper cylinder (20) and a stirring bottom plate (19); an annular V-shaped groove (21) is provided at the bottom end of the upper cylinder (20); the upper cylinder (20) is fixed by a support rod; a V-shaped ring (22) corresponding to the V-shaped groove (21) is provided on the stirring bottom plate (19); and a hydraulic rod (23) and a lifting screw (24) are evenly distributed at the bottom end of the stirring bottom plate (19).

8. The energy-saving coal slime separation and upgrading device according to claim 1 is characterized in that: A plurality of pneumatic telescopic rods are fixed on the bottom surface of the warehouse body (1), a scraper (35) is fixed on the top of the pneumatic telescopic rod, the outer side of the scraper (35) abuts against the inner side of the warehouse body (1), and the pneumatic telescopic rod comprises a hollow telescopic rod (36), an air bag (37) is arranged in the hollow telescopic rod (36), and the air bag (37) is connected to the air inlet pipe.

9. The energy-saving coal slime separation and upgrading device according to claim 1, characterized in that: The diameter of the air hole (10) on the stirring rod (8) gradually decreases as it approaches the impeller cap (7).

10. The energy-saving coal slime separation and upgrading device according to claim 1, characterized in that: A permanent magnet (25) is fixed to the side of the stirring rod (8) away from the air hole (10), and the sealing plate (11) can be attracted by the permanent magnet (25).

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