Dust removal device for flotation machine

Abstract

The invention relates to the technical field of dust separation treatment of flotation machines, and discloses a dust removal device for a flotation machine. The dust removal device comprises a collecting seat and a sealing cover for sealing a scraping and discharging opening of the flotation machine, the upper end of the collecting seat is fixedly communicated with the sealing cover, and a semi-cylindrical discharging seat is arranged in the collecting seat in a partition and sealing mode; a plurality of uniformly distributed discharging defoaming holes are formed in the discharging seat, a driving motor is arranged outside the collecting seat, a rotating roller rotating with the inner wall of the collecting seat is arranged at the output end of the driving motor, the rotating roller is located above the discharging seat and is concentric with the discharging seat, crushing needles are uniformly distributed outside the rotating roller, and the crushing needles are connected with the discharging seat. Compared with the prior art, the dust removal device for the flotation machine has the advantages that bubbles are fully broken, and dust is collected, separated, stored and reused while continuous suction of the broken dust is not affected.

Description

Technical Field

[0001] The present invention relates to the technical field of dust separation and treatment for flotation machines, and specifically to a dust removal device for flotation machines. Background Art

[0002] The flotation machine is driven by an electric motor through a V-belt drive to drive the impeller to rotate, generating a centrifugal force to form a negative pressure. On the one hand, sufficient air is inhaled to mix with the pulp, and on the other hand, the pulp is stirred to mix with the drug, while the foam is refined, so that the minerals adhere to the foam, float to the pulp surface to form mineralized foam, and the height of the gate is adjusted to control the liquid level, so that the useful foam is scraped out by the scraper.

[0003] After the bubbles of the flotation machine float to the surface and burst, some will form dust and float in the air, so dust removal is required. Various filtering devices are needed for dust removal. The existing dust removal devices cannot achieve the full rupture of the floating bubbles in a closed state, resulting in the unbroken bubbles bursting after separating from the dust removal device during the discharging and flowing process, thus failing to achieve the effect of dust collection. When dealing with the inhaled dust, it is necessary to stop working for cleaning, and the dust generated by the rupture contains a large amount of moisture, which cannot be effectively separated, stored and reused. Therefore, we propose a dust removal device for flotation machines to solve this defect of the existing technology. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a dust removal device for flotation machines.

[0005] To achieve the above object, the present invention provides the following technical solution: A dust removal device for flotation machines, including a collection base, a sealing cover for closing the scraping and discharging port of the flotation machine, the upper end of the collection base is fixedly connected and communicated with the sealing cover, a discharge base in the shape of a semi-cylinder is hermetically partitioned in the collection base, a plurality of uniformly distributed discharge and defoaming holes are provided on the discharge base, a driving motor is provided outside the collection base, the output end of the driving motor is provided with a rotating roller that rotates with the inner wall of the collection base, the rotating roller is located above the discharge base and is concentrically arranged, and a plurality of crushing needles are uniformly distributed on the outside of the rotating roller; A drying base is provided at the upper end of the sealing cover. A framework is provided between the left and right side walls of the inner cavity of the drying base. A partition is installed in the middle of the framework in a partitioned manner. A filter screen cylinder in the shape of a hollow cuboid and located outside the partition is provided inside the framework. A pair of scrapers are attached to the inner wall of the filter screen cylinder and are respectively located on the left and right sides of the partition. An inhalation assembly is communicated between the sealing cover and the filter screen cylinder. The connection points of the inhalation assembly and the filter screen cylinder are two, and are respectively located outside the outer sides of the opposite surfaces of the two scrapers. A plurality of heating elements are provided in the drying base between the drying base and the filter screen cylinder. A gas extraction assembly is provided at the lower end of the drying base; A pair of collecting components are provided at the lower end of the filter screen cylinder, which are respectively located outside the opposite surfaces of the two scrapers. A driving component is provided on the drying base, which drives the scraper to scrape the dried dust into the collecting component for storage.

[0006] Furthermore, burrs are distributed both inside the discharge defoaming holes and outside the crushing needles.

[0007] Furthermore, a spray pipe passing through the sealing cover is provided inside the sealing cover. The spray nozzle of the spray pipe is arranged downward. A discharge pipe is provided at the lower end of the collecting base.

[0008] Furthermore, the left and right side walls of the filter screen cylinder are fitted and sealed with the left and right side walls of the inner cavity of the drying base. The suction component includes a suction pipe that communicates with the top of the sealing cover and penetrates into the inside of the sealing cover. A connecting pipe is communicated with the outside of the suction pipe. The other end of the connecting pipe is communicated with a U-shaped pipe. The two ends of the U-shaped pipe are respectively communicated with exhaust heads that pass through the drying base and communicate with the filter screen cylinder; Among them, the connections of the two exhaust heads with the filter screen cylinder are respectively located outside the opposite surfaces of the scrapers. An automatic switch valve I is communicated with the outside of the exhaust head.

[0009] Furthermore, the suction pipe includes a plurality of dust suction heads located inside the sealing cover.

[0010] Furthermore, the heating element is a heating screw rod, but is not limited to the heating screw rod.

[0011] Furthermore, the air extraction component includes an air extraction pump. The air extraction port of the air extraction pump is communicated with an air extraction pipe, and both ends of the air extraction pipe are communicated with the drying base.

[0012] Furthermore, the collecting component includes ash discharge pipes that are communicated with a pair of the filter screen cylinders and are respectively located outside the opposite surfaces of the two scrapers. The ash discharge pipes penetrate to the lower end of the drying base. The other end of the ash discharge pipe is communicated with an ash collection cylinder. A collection net seat is placed inside the ash collection cylinder and is located outside the lower end opening of the ash discharge pipe; Among them, an automatic switch valve II is communicated with the outside of the ash discharge pipe.

[0013] Furthermore, the upper end of the ash collection cylinder is open, and a cover communicated with the ash discharge pipe is hermetically covered at the opening.

[0014] Furthermore, the driving component includes servo motors provided on the left and right side surfaces of the drying base. The output ends of the servo motors are provided with threaded rods that are respectively threadedly connected to the scrapers. The threaded rods are rotationally connected to the partition plate.

[0015] Compared with the prior art, the present invention provides a dust removal device for a flotation machine, which has the following beneficial effects: 1. The dust removal device for the flotation machine is connected to the scraping and discharging port of the flotation machine through the provided sealing cover and cooperates with the collecting seat to achieve butt joint sealing with the flotation machine, ensuring that the foam is scraped out by the scraper into the collecting seat and flows into the discharging seat. By setting the driving motor to drive the rotating roller and the crushing needles to rotate synchronously, the unbroken bubbles are punctured and burst. The smaller unbroken bubbles are discharged through the discharging defoaming holes to achieve further puncture and bursting, ensuring the bursting effect of the bubbles and avoiding the bursting of the bubbles during the discharging and flowing process, so that the dust cannot be collected. After the bubbles burst and generate dust, through the mutual connection between the provided air extraction component, drying seat, suction component, filter screen cylinder and sealing cover, the dust generated by the bursting inside the sealing cover is discharged into the filter screen cylinder through the suction component, and the dust is filtered and adsorbed inside the filter screen cylinder. At the same time, the heating element is used to dry and separate the moisture in the dust. In addition, after the dried dust is adsorbed on the inner wall of the filter screen cylinder, by controlling the closing of the switches at the two connections between the suction component and the filter screen cylinder, under the isolation and segmentation effect of the partition on the filter screen cylinder, the two sides are alternately closed and opened. Without affecting the dust inhalation, by alternately opening and closing the driving component to drive the scraper to move, the scraped dust is discharged into the collecting component for storage, realizing the reuse of the collected dust. Compared with the prior art, it realizes the full bursting of the bubbles, and while not affecting the continuous inhalation of the dust generated by the bursting, it collects, separates and stores the dust for reuse.

[0016] 2. For the dust removal device for the flotation machine, burrs are evenly distributed inside the discharging defoaming holes and on the outside of the crushing needles, further improving the defoaming effect on the bubbles. Description of the Drawings

[0017] Figure 1 Isometric view of a dust removal device for a flotation machine proposed by the present invention; Figure 2 Front view of a dust removal device for a flotation machine proposed by the present invention; Figure 3 Rear view of a dust removal device for a flotation machine proposed by the present invention; Figure 4 Partially cut-away isometric view of a dust removal device for a flotation machine proposed by the present invention; Figure 5 A dust removal device for a flotation machine proposed by the present invention Figure 4 Right view; Figure 6 Deflected isometric view of a dust removal device for a flotation machine proposed by the present invention; Figure 7 Partially cut-away isometric view of the drying seat of a dust removal device for a flotation machine proposed by the present invention; Figure 8 A sectional perspective view of the filter screen cylinder of a dust removal device for a flotation machine proposed by the present invention; Figure 9 A dust removal device for a flotation machine proposed by the present invention Figure 8 Side perspective view; Figure 10 A bottom perspective view of a dust removal device for a flotation machine proposed by the present invention; Figure 11 A sectional perspective view of the ash collection cylinder of a dust removal device for a flotation machine proposed by the present invention; Figure 12 An enlarged perspective view of part A of a dust removal device for a flotation machine proposed by the present invention.

[0018] In the figure: 1, collection base; 2, sealing cover; 3, spray pipe; 4, discharge pipe; 5, discharge seat; 6, discharge defoaming holes; 7, drive motor; 8, rotating roller; 9, crushing needle; 10, drying base; 11, air extraction pump; 12, air extraction pipe; 13, suction pipe; 14, connecting pipe; 15, U-shaped pipe; 16, exhaust head; 17, automatic switch valve I; 18, framework; 19, partition board; 20, filter screen cylinder; 21, scraper; 22, servo motor; 23, threaded rod; 24, ash discharge pipe; 25, automatic switch valve II; 26, ash collection cylinder; 27, collection mesh base; 28, heating element. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1 to 5 , a dust removal device for a flotation machine, including a collection base 1 which is rectangular parallelepiped and has a smooth inner surface for collecting the mineral foam scraped out by the flotation of the flotation machine. The upper surface thereof is fixedly connected and installed through a flange with a sealing cover 2. The sealing cover 2 is made of soft rubber material, can closely fit the scraping and discharging port of the flotation machine, and is hermetically connected by bolts to prevent dust from escaping when the bubbles burst. A discharge seat 5 which is arranged horizontally in a semi-cylindrical shape is hermetically partitioned in the collection base 1. A plurality of discharge defoaming holes 6 are uniformly distributed on the discharge seat 5. The discharge defoaming holes 6 are circular, with a diameter of 5 - 10 mm, and the inner wall is distributed with sharp burrs for further defoaming.

[0021] The driving motor 7 is fixedly connected to the left end surface of the collection seat 1 by bolts. A frequency conversion speed regulation motor is adopted, and the rotation speed can be adjusted according to actual needs. The output end of the driving motor 7 is fixedly connected to a rotating roller 8 that rotates circumferentially with the right side wall of the inner cavity of the collection seat 1 through a coupling. The rotating roller 8 is located above the discharge seat 5 and is concentrically arranged. The rotating roller 8 is of the same length as the discharge seat 5, and a plurality of crushing needles 9 are evenly distributed and fixed on its outer surface. The crushing needles 9 are needle-shaped and are also distributed with burrs on the outside. The driving motor 7 drives the rotating roller 8 and the crushing needles 9 to rotate synchronously to puncture and break the unbroken bubbles.

[0022] Please refer to Figures 6 to 9 the drying seat 10 and the filter screen cylinder 20. The upper end surface of the sealing cover 2 is fixedly connected to the drying seat 10 by bolts. The drying seat 10 is in the shape of a cuboid box structure with a relatively large internal space. A metal framework 18 is fixedly connected between the left and right side walls of the inner cavity of the drying seat 10. A partition plate 19 is installed and fixed in the middle of the framework 18. The partition plate 19 divides the interior of the drying seat 10 into two independent chambers on the left and right sides. The inner side of the framework 18 is fixedly connected to a filter screen cylinder 20 that is in the shape of a hollow cuboid and is located outside the partition plate 19. The filter screen cylinder 20 is made of activated carbon, and other filter screen structures of different materials can also be replaced according to actual use conditions. It has high filtration accuracy and mechanical strength. Its left and right side walls are tightly attached and sealed to the left and right side walls of the inner cavity of the drying seat 10. A pair of scraping plates 21 are attached to the inner wall of the filter screen cylinder 20, which are respectively located on the left and right sides of the partition plate 19. The length and width of the scraping plates 21 are respectively equal to the length and width of the inner wall of the filter screen cylinder 20. The scraping plates 21 are made of polyurethane material, which has good wear resistance and corrosion resistance. Driven by the driving component, they move left and right to scrape the dried dust into the collection component.

[0023] Inhalation component and air extraction component. There is an inhalation component communicating between the sealing cover 2 and the filter screen cylinder 20. There are two connection points between the inhalation component and the filter screen cylinder 20, which are respectively located outside the opposite sides of the two scraping plates 21. The inhalation component includes a suction pipe 13 that communicates with the top of the sealing cover 2 and penetrates into the interior of the sealing cover 2. The suction pipe 13 includes multiple dust suction heads located inside the sealing cover 2 to ensure uniform distribution inside the sealing cover 2 and improve the dust suction effect. The suction pipe 13 is made of stainless steel with a smooth inner wall. The dust suction heads are in the shape of a flared mouth to increase the dust collection range. The outside of the suction pipe 13 is connected to a connecting pipe 14. The other end of the connecting pipe 14 is connected to a U-shaped pipe 15. Both ends of the U-shaped pipe 15 are respectively connected to exhaust heads 16 that pass through the drying base 10 and communicate with the filter screen cylinder 20. The outside of the exhaust heads 16 is connected to an automatic switch valve 17. The connection points of the two exhaust heads 16 and the filter screen cylinder 20 are respectively located outside the opposite sides of the scraping plates 21. At the lower end of the drying base 10, there is an air extraction component. The air extraction component includes an air extraction pump 11. The air extraction port of the air extraction pump 11 is connected to an air extraction pipe 12. Both ends of the air extraction pipe 12 are connected to the bottom of the drying base 10. Through the operation of the air extraction pump 11, the dust generated inside the sealing cover 2 is sucked into the filter screen cylinder 20.

[0024] Please refer to Figures 9 to 12 Collection component and drive component. At the lower end of the filter screen cylinder 20, there is a pair of collection components respectively located outside the opposite sides of the two scraping plates 21. The collection component includes ash discharge pipes 24 that communicate with a pair of the filter screen cylinder 20 and are respectively located outside the opposite sides of the two scraping plates 21. The ash discharge pipes 24 are made of PVC material, having good corrosion resistance and sealing performance. They penetrate to the lower end of the drying base 10, and the other end is connected to an ash collection cylinder 26. The ash collection cylinder 26 is cylindrical and made of stainless steel. Inside, there is a collection net seat 27 arranged concentrically. The collection net seat 27 is located outside the lower end opening of the ash discharge pipe 24 and is used to store the collected dust. The outside of the ash discharge pipe 24 is connected to an automatic switch valve 25. On the drying base 10, there is a drive component that drives the scraping plates 21 to scrape the dried dust into the collection component for storage. The drive component includes a servo motor 22 fixed to the left and right sides of the drying base 10 by bolts. The output end of the servo motor 22 is connected and fixed to threaded rods 23 that are respectively threadedly connected to the scraping plates 21 through couplings. The two threaded rods 23 are respectively connected to and rotate with the left and right sides of the partition plate 19. By driving the threaded rods 23 to rotate through the servo motor 22, the left and right movement of the scraping plates 21 is realized.

[0025] It should be added that the upper end of the ash collection cylinder 26 is open, and a cover communicating with the ash discharge pipe 24 is sealed at the opening. By opening the cover, the collection net seat 27 can be taken out, and the dust collected in the collection net seat 27 can be poured out for reuse.

[0026] For other details, burrs are distributed both inside the discharge defoaming hole 6 and outside the crushing needle 9. The burrs are made of stainless steel and are in the shape of sharp needles, which can effectively enhance the defoaming effect. A spray pipe 3 passing through the sealing cover 2 is fixed. The spray pipe 3 is made of stainless steel, and its spray nozzle is arranged downward for spraying to promote discharging. The lower end surface of the collection seat 1 is communicated with a discharge pipe 4 for discharging the ore materials in the collection seat 1. Inside the drying seat 10, there are fixed no less than a pair of heating elements 28 located between the drying seat 10 and the filter screen cylinder 20. The heating element 28 is a heating screw rod, but is not limited to the heating screw rod, and can be replaced according to the actual situation. The heating elements 28 are evenly distributed in the drying seat 10 for drying and separating the moisture in the dust. The left and right sides of the drying seat 10 are opened and closed by a switch cover, which is convenient for opening the switch cover to replace the internal components of the drying seat 10.

[0027] Working principle and usage steps. During the installation process, the sealing cover 2 is connected to the scraping and discharging port of the flotation machine by bolts to ensure that the sealing cover 2 is closely attached to the scraping and discharging port of the flotation machine to achieve a sealed connection.

[0028] The collection seat 1 is connected to the sealing cover 2 by a flange to ensure the sealing performance of the connection.

[0029] Install the drive motor 7, and connect the output end of the drive motor 7 to the rotating roller 8 through a coupling to ensure that the rotating roller 8 can rotate freely in the collection seat 1.

[0030] Install the drying seat 10, and sequentially install components such as the skeleton 18, the partition 19, the filter screen cylinder 20, and the scraper 21 in the drying seat 10 to ensure the sealing performance and compatibility between the components.

[0031] Install the suction component and the air extraction component. Connect components such as the suction pipe 13, the connecting pipe 14, the U-shaped pipe 15, the exhaust head 16, and the automatic switch valve 17, and connect the air extraction pump 11 to the drying seat 10 through the air extraction pipe 12.

[0032] Install the collection component and the drive component. Connect components such as the ash discharge pipe 24, the ash collection cylinder 26, the collection mesh seat 27, the automatic switch valve 25, the servo motor 22, and the threaded rod 23 to ensure that the drive component can drive the scraper 21 to move left and right.

[0033] During the operation process, when the flotation machine is working, the generated foam is scraped out by the scraper into the collection seat 1 and flows into the discharge seat 5.

[0034] Start the drive motor 7 to drive the rotating roller 8 and the crushing needle 9 to rotate synchronously to puncture and break the unbroken bubbles. The smaller unbroken bubbles are discharged through the discharge defoaming hole 6, and the burrs in the discharge defoaming hole 6 further improve the defoaming effect.

[0035] After the bubbles burst, dust is generated. The air extraction pump 11 is started, and a negative pressure is formed between the drying base 10, the filter screen cylinder 20, the exhaust head 16, the U-shaped pipe 15, the connecting pipe 14, the suction pipe 13 and the sealing cover 2 through the air extraction pipeline 12, so that the suction pipe 13 sucks the dust generated by the bursting of the bubbles to the exhaust head 16 and discharges it into the filter screen cylinder 20.

[0036] Using the filtering effect of the filter screen cylinder 20 and the heating effect of the heating element 28 on the air flow, the moisture in the dust is dried and separated, and the dried dust is stored in the filter screen cylinder 20.

[0037] When it is necessary to clean the stored dust, since the two exhaust heads 16 are respectively located on both sides of the opposite surfaces of the two scraping plates 21, ensuring that without affecting the dust inhalation work, by closing the automatic switch valve one 17 on one of the exhaust heads 16 (at this time, opening the automatic switch valve two 25 on the ash discharge pipe 24 on this side), and opening the automatic switch valve one 17 on the other exhaust head 16 (at this time, closing the automatic switch valve two 25 on the ash discharge pipe 24 on this side), it is ensured that while the exhaust head 16 at the opening is normally admitting air flow, the exhaust head 16 at the other end is in a closed state. At this time, the servo motor 22 on the side in the closed state is turned on to drive the threaded rod 23 to rotate. Using the threaded connection between the threaded rod 23 and the scraping plate 21, and the limiting movement of the filter screen cylinder 20 on the scraping plate 21, when the threaded rod 23 rotates, the scraping plate 21 is moved from the side of the partition plate 19 towards the ash discharge pipe 24, scraping the dust in the filter screen cylinder 20 into the ash discharge pipe 24 and falling into the collection mesh base 27 for storage. Opening the filter screen cylinder 20 can pour and reuse the collected dust.

[0038] After the collection is completed, based on the above principle, the scraping plate 21 is moved back to fit with the partition plate 19, facilitating the next cleaning.

[0039] In addition, based on the above principle, the alternating opening and closing of the automatic switch valve one 17 and the automatic switch valve two 25 realizes the alternating cleaning and collection of the dust stored in the two sections in the filter screen cylinder 20 with the partition plate 19 as the center without affecting the dust inhalation work.

[0040] During the maintenance process, regularly check the sealing performance between the sealing cover 2 and the scraping and discharging port of the flotation machine. If there is leakage, replace the sealing parts in time. Regularly clean the residual dust and pulp on the collection base 1, the discharging base 5, the rotating roller 8 and the crushing needle 9 to prevent blockage. Regularly check the filtering effect of the filter screen cylinder 20. If there is blockage or damage, replace it in time. Regularly lubricate and maintain the servo motor 22 and the threaded rod 23 to ensure smooth movement of the scraping plate 21. Regularly check the operating status of the heating element 28 and the air extraction pump 11. If there is a fault, repair or replace it in time.

[0041] Structure expansion: Add a valve at the lower discharge pipe 4 of the collection base 1 to control the opening and closing of the discharge pipe 4, and set an observation window at the top of the drying base 10 to facilitate observing the internal dust treatment situation.

[0042] This application is equipped with a PLC controller, an operation panel, and a power supply storage battery, which belong to the prior art for the control and operation of equipment.

[0043] Beneficial effects: The dust removal device for the flotation machine realizes close docking and sealing with the flotation machine through the setting of the sealing cover 2 and the collection base 1, ensuring that the foam is effectively collected and treated. The combined design of the drive motor 7, the rotating roller 8, and the crushing needle 9 can fully break the bubbles, avoiding secondary breakage of unbroken bubbles during the discharge process and generating dust. Through the coordinated work of the air extraction assembly, the drying base 10, the inhalation assembly, and the filter screen cylinder 20, efficient collection, filtration, and drying of dust are achieved. The unique design of the collection assembly and the drive assembly enables the timely cleaning and storage of the dried dust while not affecting the inhalation of the dust gas generated by the breakage, realizing the reuse of resources. The entire device has a compact structure, stable operation, convenient operation and maintenance, effectively solves the dust problem generated during the operation of the flotation machine, improves the working environment, and improves the production efficiency and resource utilization rate.

[0044] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dust removal device for a flotation machine, comprising a collection base and a sealing cover for closing the scraping and discharging port of the flotation machine, characterized in that: The upper end of the collection base is fixedly connected and communicated with the sealing cover. Inside the collection base, a discharge seat in the shape of a semi-cylinder is partitioned and sealed. The discharge seat is provided with a plurality of uniformly distributed discharge defoaming holes. Outside the collection base, a driving motor is provided. The output end of the driving motor is provided with a rotating roller that rotates with the inner wall of the collection base. The rotating roller is located above the discharge seat and is concentrically arranged. The outer part of the rotating roller is uniformly provided with crushing needles. The upper end of the sealing cover is provided with a drying base. Between the left and right side walls of the inner cavity of the drying base, there is a framework. In the middle of the framework, a partition is installed in a partitioned manner. Inside the framework, there is a filter screen cylinder in the shape of a hollow cuboid and located outside the partition. A pair of scraping plates are attached to the inner wall of the filter screen cylinder, respectively located on the left and right sides of the partition. A suction component is communicated between the sealing cover and the filter screen cylinder. The connection points of the suction component and the filter screen cylinder are two, respectively located outside the outer sides of the opposite surfaces of the two scraping plates. Inside the drying base, there are a plurality of heating elements located between the drying base and the filter screen cylinder. The lower end of the drying base is provided with an air extraction component. The lower end of the filter screen cylinder is provided with a pair of collection components, respectively located outside the outer sides of the opposite surfaces of the two scraping plates. On the drying base, a driving component is provided, which drives the scraping plates to scrape the dried dust into the collection components for storage.

2. The dust removal device for a flotation machine according to claim 1, wherein: Burrs are distributed both inside the discharge defoaming holes and on the outside of the crushing needles.

3. The dust removal device for a flotation machine according to claim 1, characterized in that: Inside the sealing cover, there is a spray pipe passing through the sealing cover. The spray nozzle of the spray pipe is arranged downward. The lower end of the collection base is provided with a discharge pipeline.

4. The dust removal device for a flotation machine according to claim 1, characterized in that: The left and right side walls of the filter screen cylinder are tightly attached and sealed to the left and right side walls of the inner cavity of the drying base. The suction component includes a suction pipe that is communicated to the top of the sealing cover and penetrates into the inside of the sealing cover. A connecting pipe is communicated to the outside of the suction pipe. The other end of the connecting pipe is communicated with a U-shaped pipe. The two ends of the U-shaped pipe are respectively communicated with exhaust heads that pass through the drying base and are communicated with the filter screen cylinder. Among them, the connection points of the two exhaust heads and the filter screen cylinder are respectively located outside the outer sides of the opposite surfaces of the scraping plates. An automatic switch valve I is communicated to the outside of the exhaust head.

5. The dust removal device for a flotation machine according to claim 4, wherein: The suction pipe includes a plurality of dust suction heads located inside the sealing cover.

6. The dust removal device for a flotation machine according to claim 1, characterized in that: The heating element is a heating screw rod, but is not limited to the heating screw rod.

7. The dust removal device for a flotation machine according to claim 1, characterized in that: The air extraction component includes an air extraction pump. The air extraction port of the air extraction pump is communicated with an air extraction pipeline. The two ends of the air extraction pipeline are communicated with the drying base.

8. The dust removal device for a flotation machine according to claim 1, characterized in that: The collection component includes ash discharge pipes that are communicated with a pair of the filter screen cylinders and are respectively located outside the outer sides of the opposite surfaces of the two scraping plates. The ash discharge pipes penetrate to the lower end of the drying base. The other ends of the ash discharge pipes are communicated with ash collection cylinders. Inside the ash collection cylinders, there are collection mesh seats located outside the lower end openings of the ash discharge pipes. Among them, an automatic switch valve II is communicated to the outside of the ash discharge pipe.

9. The dust removal device for a flotation machine according to claim 8, characterized in that: The upper end of the ash collection cylinder is open, and a cover that is communicated with the ash discharge pipe is hermetically covered at the opening.

10. The dust removal device for a flotation machine according to claim 8, characterized in that: The driving component includes servo motors arranged on the left and right side surfaces of the drying base. The output ends of the servo motors are provided with threaded rods that are respectively threadedly connected to the scraping plates. The threaded rods are rotationally connected to the partition.

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