Flotation ash reduction and leaching chlorine reduction joint production device and production process

Abstract

The invention relates to the technical field of ash and chlorine reduction, and provides a flotation ash reduction and leaching chlorine reduction joint production device and a production process, the flotation ash reduction and leaching chlorine reduction joint production device comprises a rack, the rack is provided with a containing cavity, and the containing cavity is used for containing separated clean coal; the first rotating shaft is rotationally arranged on the rack; the scraping plate is rotationally arranged on the first rotating shaft, and the scraping plate is used for scraping the separated clean coal out of the containing cavity after rotating. By means of the technical scheme, the problems that in the prior art, the scraping efficiency of a scraper of a flotation machine is low, the service life of the scraper is short, and the scraper is difficult to replace are solved.

Description

Technical Field

[0001] This invention relates to the field of ash and chlorine reduction technology, specifically to a combined flotation ash reduction and leaching chlorine reduction production apparatus and production process. Background Technology

[0002] During coal processing and utilization, coal typically contains high levels of ash and chlorine, which negatively impact coal quality and subsequent use. High ash content reduces calorific value and increases pollutant emissions during combustion, while high chlorine content can lead to corrosion and other adverse consequences during combustion or other applications. Traditional coal processing methods often only address ash or chlorine separately, resulting in cumbersome and inefficient processes.

[0003] The principle of clean coal separation by flotation machine is as follows: 1. Addition of reagents: The ground coal is fed into the container of the flotation machine, along with appropriate amounts of water and flotation reagents. Flotation reagents typically include collectors, frothers, and modifiers. 2. Formation and attachment of bubbles: Under the action of the stirring device, the frother generates a large number of bubbles, which rise in the slurry. Due to the action of the collector, the surface of the coal particles is hydrophobic, and they preferentially attach to the rising bubbles. Impurities in the coal, such as ash and other minerals, are usually hydrophilic and remain in the slurry or sink. 3. Flotation of clean coal: The bubbles with attached coal particles rise to the surface of the slurry, forming a foam layer. Because the coal particles are attached to the bubbles, the coal is separated from the impurities, forming a stratification of clean coal and tailings (impurities). 4. Scraping of clean coal: When the clean coal floats on the surface of the water in the form of foam, the first rotating shaft drives the scraper to rotate, and the scraper can scrape the clean coal out of the container.

[0004] In the field of coal flotation, flotation machines typically utilize the differences in surface properties between coal particles and impurities to achieve separation. However, existing flotation machines suffer from numerous problems in the scraping and subsequent processing of clean coal, such as low scraping efficiency of the scrapers, short scraper lifespan, difficulty in replacing scrapers, and difficulty in effectively integrating with subsequent dechlorination treatment. Summary of the Invention

[0005] This invention proposes a combined flotation ash reduction and leaching chlorination reduction production device and process, which solves the problems of low scraping efficiency, short scraper life and difficulty in scraper replacement in related technologies.

[0006] The technical solution of the present invention is as follows: The combined flotation ash reduction and leaching chlorination reduction production unit includes: The frame has a receiving cavity for sorting clean coal; The first rotating shaft is rotatably mounted on the frame; A scraper is rotatably mounted on the first rotating shaft. After the scraper rotates with the first rotating shaft, it is used to scrape the clean coal out of the receiving cavity.

[0007] Optionally, the scraper rotates in the opposite direction to the first rotating shaft.

[0008] Optionally, the scraper has a first sliding cavity and further includes: A mounting bracket is disposed on the first rotating shaft, and the mounting bracket has a second sliding cavity; A snap-fit ​​post is slidably disposed in the first sliding cavity. After one end of the snap-fit ​​post slides out of the first sliding cavity, it is used to slide into the second sliding cavity. One end of the snap-fit ​​post is rotatably disposed in the second sliding cavity. An elastic element has one end disposed in the first sliding cavity and the other end disposed on the snap-fit ​​post. The elastic element is used to provide a force for one end of the snap-fit ​​post to slide out of the first sliding cavity.

[0009] Optionally, the snap-fit ​​post has a square structure and further includes: The second rotating shaft is rotatably disposed within the second sliding cavity, and the snap-fit ​​post is used to snap into the second rotating shaft. The snap-fit ​​post is concentrically disposed with the second rotating shaft. The first gear is mounted on the second rotating shaft.

[0010] Optionally, it also includes: The third gear is rotatably mounted on the mounting bracket, and the third gear meshes with the second gear. A fourth gear is disposed on the third gear, and the fourth gear is concentrically disposed with the third gear; A timing belt is wound around the fourth gear and the first gear.

[0011] Optionally, the receiving cavity has an opening through which the scraper scrapes out the clean coal, and further includes: A baffle is movably mounted on the frame, and the baffle is used to open or close the opening after it is moved. The first connecting rod has one end rotatably mounted on the frame and the other end rotatably mounted on the baffle. The second connecting rod has one end rotatably mounted on the frame and the other end rotatably mounted on the baffle. The first connecting rod and the second connecting rod are arranged parallel to each other.

[0012] Optionally, the baffle has a snap-fit ​​protrusion, and the scraper rotates to drive the baffle to move.

[0013] Optionally, it also includes: A liquid collecting device is disposed on the frame, the opening leads to the liquid collecting device, and the liquid collecting device has an outlet.

[0014] Optionally, it also includes: A sliding plate is slidably disposed on the liquid collecting component. After the sliding plate slides, it is used to open or close the outlet.

[0015] The combined flotation ash reduction and leaching chloride reduction process includes the following steps: S1. Feed the ground coal into the flotation machine's containment chamber; S2. Turn on the agitator of the flotation machine to generate a large number of bubbles. Because the surface of the coal particles has been treated with reagents, the coal particles will selectively adhere to the bubbles, forming a foam layer that floats above the water surface, while impurities will sink or remain suspended in the water.

[0016] S3. Start the first rotating shaft, which drives the scraper to rotate. The rotation of the scraper can scrape the fine coal floating on the water surface out of the receiving chamber.

[0017] S4. Multiple scrapers can rotate synchronously through the cooperation of gears and timing belts, ensuring scraping efficiency and uniformity. When scraping clean coal, the two edges of the scraper work alternately, extending the service life of the scraper.

[0018] S5. The scraper scrapes clean coal out from the opening of the receiving cavity. When the scraper rotates, the edge of the scraper can interact with the snap-fit ​​protrusion of the baffle, causing the baffle to automatically open or close the opening.

[0019] S6. The scraped clean coal is conveyed to the liquid collecting unit, which is mounted on the frame and connected to the opening of the receiving cavity. A water pipe is connected to the liquid collecting unit, water is added, and the outlet is closed, allowing the clean coal to be submerged in water to begin the leaching and dechlorination operation.

[0020] S7. When the required leaching time is reached, open the outlet of the liquid collection device by sliding the sliding plate on the sliding liquid collection device to discharge the dechlorinated clean coal.

[0021] The working principle and beneficial effects of this invention are as follows: In this invention, a frame with a receiving cavity is constructed, which serves as the space for separating clean coal using a flotation method. A first rotating shaft is installed on the frame, ensuring that the first rotating shaft can rotate freely, for example, by mounting the first rotating shaft in a corresponding position on the frame via bearings. A scraper is installed on the first rotating shaft, so that the scraper can rotate both circumferentially along the shaft's axis and along its own axis. When the clean coal and foam rise to the top of the water surface, the first rotating shaft is driven to rotate, and the scraper follows the rotation, scraping the clean coal out of the receiving cavity. After rotation, the scraper no longer scrapes clean coal from only one spot; both sides of the scraper alternately scrape clean coal, increasing the scraper's service life.

[0022] The scraper rotates relative to the first rotating shaft, allowing the two sides of the scraper to scrape clean coal alternately, thus improving the service life of the scraper. The scraper is also easy to replace, facilitating equipment maintenance and upgrades. Attached Figure Description

[0023] The preferred embodiments will now be described in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages, and implementation methods of the present invention.

[0024] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the elastic element structure of the present invention; Figure 3 for Figure 1 Enlarged view of point A; Figure 4 This is a schematic diagram of the second gear structure of the present invention; Figure 5 This is a schematic diagram of the sliding plate structure of the present invention; Figure 6 This is a schematic diagram of the structure of the present invention, which shows that the scraper can scrape off more material after rotating.

[0025] In the diagram: 1. Frame, 11. Receiving cavity, 2. First rotating shaft, 3. Scraper, 31. First sliding cavity, 4. Mounting bracket, 41. Second sliding cavity, 6. Snap-fit ​​post, 7. Elastic element, 8. Second rotating shaft, 9. First gear, 21. Second gear, 10. Third gear, 110. Fourth gear, 120. Synchronous belt, 111. Opening, 13. Baffle, 14. First connecting rod, 15. Second connecting rod, 131. Snap-fit ​​protrusion, 16. Liquid collecting element, 161. Outlet, 17. Sliding plate. Detailed Implementation

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are merely some embodiments of the present invention. For those skilled in the art, they can be understood as further technical solutions without creative effort. In some drawings, components with the same structure or function are only schematically illustrated, or only one is marked. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0027] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] Reference Figures 1-6 The first embodiment of the present invention proposes a combined flotation ash reduction and leaching chlorination reduction production device, including a frame 1, the frame 1 having a receiving cavity 11 for separating clean coal; a first rotating shaft 2 rotatably mounted on the frame 1; a scraper 3 rotatably mounted on the first rotating shaft 2, the scraper 3 rotating with the first rotating shaft 2 for scraping clean coal out of the receiving cavity 11.

[0030] In this embodiment, a frame 1 with a receiving cavity 11 is constructed, which serves as the space for separating clean coal using a flotation method. A first rotating shaft 2 is installed on the frame 1, ensuring that the first rotating shaft 2 can rotate freely, for example, by mounting the first rotating shaft 2 at a corresponding position on the frame 1 using bearings. A scraper 3 is installed on the first rotating shaft 2, so that the scraper 3 can rotate circumferentially along the axis of the first rotating shaft 2 while also rotating along its own axis. When the clean coal and foam rise to the top of the water surface, the first rotating shaft 2 is driven to rotate, and the scraper 3 follows the rotation, scraping the clean coal out of the receiving cavity 11. After rotation, the scraper 3 no longer scrapes clean coal in only one place; the two sides of the scraper 3 scrape clean coal alternately, increasing the service life of the scraper 3.

[0031] The scraper 3 rotates relative to the first rotating shaft 2, which allows the two sides of the scraper 3 to scrape clean coal alternately, thereby improving the service life of the scraper 3. In addition, the scraper 3 is easy to replace, which facilitates the maintenance and upgrading of the equipment.

[0032] Furthermore, the scraper 3 rotates in the opposite direction to the first rotating shaft 2.

[0033] In this embodiment, a specialized transmission device or motor control program is used to make the rotation direction of the scraper 3 opposite to that of the first rotating shaft 2. For example, when the first rotating shaft 2 is driven to rotate clockwise by a motor, a reasonable transmission system is used to make the scraper 3 rotate counterclockwise. The counterclockwise rotation of the scraper 3 and the first rotating shaft 2 can increase the amount of clean coal scraped, improve work efficiency, and optimize the scraping process of sorting clean coal.

[0034] Furthermore, the scraper 3 has a first sliding cavity 31, the mounting bracket 4 is disposed on the first rotating shaft 2, and the mounting bracket 4 has a second sliding cavity 41; the locking post 6 is slidably disposed in the first sliding cavity 31, and after the locking post 6 slides, one end slides into or out of the first sliding cavity 31, and after one end of the locking post 6 slides out of the first sliding cavity 31, it is used for the other end to slide into the second sliding cavity 41, and one end of the locking post 6 is used to be rotatably disposed in the second sliding cavity 41; one end of the elastic member 7 is disposed in the first sliding cavity 31, and the other end is disposed on the locking post 6, and the elastic member 7 is used to provide the force for the locking post 6 to slide out of the first sliding cavity 31.

[0035] In this embodiment, a first sliding cavity 31 is machined inside the scraper 3. A mounting bracket 4 with a second sliding cavity 41 is installed on the first rotating shaft 2. A locking post 6 is installed inside the first sliding cavity 31, allowing it to slide within the first sliding cavity 31. An elastic element 7 is connected between the scraper 3 and the locking post 6, and the elastic element 7 is located inside the first sliding cavity 31. When installing and removing the scraper 3, an external force is first applied to the locking post 6 to compress the elastic element 7 and allow it to slide completely into the first sliding cavity 31. The scraper 3 is then moved to align the first sliding cavity 31 with the second sliding cavity 41. Then, the locking post 6 is released, and the elastic force of the elastic element 7 causes one end of the locking post 6 to slide out of the first sliding cavity 31, while the other end remains inside the first sliding cavity 31, thus connecting the scraper 3 to the mounting bracket 4. When the locking post 6 rotates, it drives the scraper 3 to rotate.

[0036] This embodiment facilitates the installation and removal of the scraper 3, improving the convenience of equipment maintenance. It also enhances the connection stability between the scraper 3 and the mounting bracket 4, ensuring the reliability of the equipment during operation.

[0037] Furthermore, the snap-fit ​​post 6 has a square structure, the second rotating shaft 8 is rotatably disposed in the second sliding cavity 41, the snap-fit ​​post 6 is used to snap into the second rotating shaft 8, and the snap-fit ​​post 6 and the second rotating shaft 8 are concentrically disposed; the first gear 9 is disposed on the second rotating shaft 8.

[0038] In this embodiment, the snap-fit ​​post 6 is designed as a square structure. A second rotating shaft 8 is rotatably mounted within the second sliding cavity 41. The snap-fit ​​post 6 snaps into the second rotating shaft 8, ensuring that the snap-fit ​​post 6 and the second rotating shaft 8 are concentric. A first gear 9 is mounted on the second rotating shaft 8. When the first gear 9 rotates, it drives the second rotating shaft 8 to rotate. The snap-fit ​​post 6, being square, snaps into the square hole in the second rotating shaft 8. The second rotating shaft and the snap-fit ​​post 6 rotate synchronously, thereby driving the scraper 3 to rotate. The snap-fit ​​post 6 is made into a square structure. The second rotating shaft 8 is installed within the second sliding cavity 41 and rotates relative to the second sliding cavity 41. The snap-fit ​​post 6 snaps into the second rotating shaft 8, ensuring that the snap-fit ​​post 6 and the second rotating shaft 8 are concentric.

[0039] A first gear 9 is installed on the second rotating shaft 8. When it is necessary to drive the scraper 3 to rotate, the first gear 9 is driven to rotate, which in turn drives the second rotating shaft 8 to rotate. Since the locking post 6 is square and the first sliding cavity 31 is also square, the locking post 6 is locked into the square hole of the second rotating shaft 8, so that the two rotate synchronously, thereby driving the scraper 3 to rotate.

[0040] In this embodiment, the cooperation between the square locking post 6 and the second rotating shaft 8 ensures stable transmission and improves the reliability of the scraper 3's rotation. The locking post 6 can effectively transmit power to the scraper 3, making the scraper 3's rotation more stable and reliable.

[0041] Furthermore, the third gear 10 is rotatably mounted on the mounting bracket 4, and the third gear 10 meshes with the second gear 21; the fourth gear 110 is mounted on the third gear 10, and the fourth gear 110 and the third gear 10 are concentrically arranged; the synchronous belt 120 is wound around the fourth gear 110 and the first gear 9.

[0042] In this embodiment, multiple scraper blades 3 are arranged at intervals along the circumference of the first rotating shaft 2, and a second gear 21 is mounted on the first rotating shaft 2. A rotatable third gear 10 is mounted on the mounting bracket 4, meshing with the second gear 21. A concentric fourth gear 110 is mounted on the third gear 10, and then a synchronous belt 120 is wound around the fourth gear 110 and the first gear 9. When the first rotating shaft 2 rotates, the multiple scraper blades 3 are driven to rotate synchronously along their own axes through the transmission of the gears and the synchronous belt 120.

[0043] This structure ensures that the rotation of multiple scrapers 3 is coordinated and consistent, improving the scraping efficiency and uniformity of clean coal, and guaranteeing the stability and reliability of the scraping process.

[0044] Furthermore, the receiving cavity 11 has an opening 111 through which the scraper 3 scrapes out the sorted clean coal. The baffle 13 is movably mounted on the frame 1 and is used to open or close the opening 111 after it is moved. One end of the first connecting rod 14 is rotatably mounted on the frame 1 and the other end is rotatably mounted on the baffle 13. One end of the second connecting rod 15 is rotatably mounted on the frame 1 and the other end is rotatably mounted on the baffle 13. The first connecting rod 14 and the second connecting rod 15 are arranged parallel to each other.

[0045] In this embodiment, an opening 111 is provided in the receiving cavity 11, through which the scraper 3 scrapes out clean coal. A baffle 13 is movable on the frame 1. By rotatably connecting the first connecting rod 14 and the second connecting rod 15 on the frame 1, and rotatably connecting their other ends to the baffle 13, the movement of the baffle 13 is achieved using the linkage mechanism, thereby controlling the opening or closing of the opening 111. When it is necessary to scrape out clean coal, the baffle 13 is moved away by operating the first connecting rod 14 and the second connecting rod 15, opening the opening 111; conversely, when it is not necessary to scrape out clean coal, the baffle 13 is moved to the position of closing the opening 111. In order to achieve the effect of reducing chlorine, water is added to the scraped clean coal in this embodiment, allowing the clean coal to stay in the water for a while to achieve the effect of reducing chlorine. In order for the clean coal to continuously flow back into the receiving cavity 11, the baffle 13 needs to close the opening 111, and the opening 111 is only opened when needed.

[0046] Furthermore, the baffle 13 has a snap-fit ​​protrusion 131, which is used to move the baffle 13 after the scraper 3 rotates.

[0047] In this embodiment, by designing the shape and position of the scraper 3 and the baffle 13, when the scraper 3 rotates, its edge will interact with the snap-fit ​​protrusion 131 of the baffle 13, thereby driving the baffle 13 to move and realize the automatic opening or closing of the opening 111. No additional driving device is required, which simplifies the operation process and improves the automation level of the equipment.

[0048] Furthermore, the liquid collecting device 16 is mounted on the frame 1, and the opening 111 leads to the liquid collecting device 16, which has an outlet 161.

[0049] In this embodiment, a liquid collecting device 16 is installed on the frame 1, and an opening 111 is connected to the liquid collecting device 16 so that the liquid carried out when the clean coal is scraped out flows into the liquid collecting device 16. The outlet 161 of the liquid collecting device 16 is used to discharge the collected clean coal. At the same time as the clean coal enters the liquid collecting device 16, a water pipe is connected so that the water pipe always adds water to the liquid collecting device 16 to reduce the chlorine of the clean coal.

[0050] Furthermore, the sliding plate 17 is slidably disposed on the liquid collecting member 16. After the sliding plate 17 slides, it is used to open or close the outlet 161.

[0051] In this embodiment, a sliding plate 17 is slidably disposed on the liquid collecting component 16. By sliding the sliding plate 17, the outlet 161 can be easily opened or closed. When it is necessary to discharge the liquid in the liquid collecting component 16, the sliding plate 17 is slid to the position where the outlet 161 is open; when it is not necessary to discharge, the sliding plate 17 is slid to the position where the outlet 161 is closed, thereby increasing the contact time between the clean coal and the water.

[0052] S1. The ground coal is fed into the flotation chamber 11 of the flotation machine; S2. Turn on the agitator of the flotation machine to generate a large number of bubbles. Because the surface of the coal particles has been treated with reagents, the coal particles will selectively adhere to the bubbles, forming a foam layer that floats above the water surface, while impurities will sink or remain suspended in the water.

[0053] S3. Start the first rotating shaft 2, which drives the scraper 3 to rotate. The rotation of the scraper 3 can scrape the fine coal floating on the water surface out of the receiving cavity 11.

[0054] S4. Multiple scrapers 3 can rotate synchronously through the cooperation of gears and timing belts 120, ensuring scraping efficiency and uniformity. When scraping clean coal, the two edges of scraper 3 work alternately, extending the service life of scraper 3.

[0055] S5. The scraper 3 scrapes the clean coal out from the opening 111 of the receiving cavity 11. When the scraper 3 rotates, the edge of the scraper 3 can interact with the snap-fit ​​protrusion 131 of the baffle 13, causing the baffle 13 to automatically open or close the opening 111.

[0056] S6. The scraped clean coal is conveyed to the liquid collecting unit 16, which is mounted on the frame 1 and connected to the opening 111 of the receiving cavity 11. A water pipe is connected to the liquid collecting unit 16, water is added into the liquid collecting unit 16, and the outlet 161 is closed, so that the clean coal is soaked in water and the leaching and dechlorination operation begins.

[0057] S7. When the required leaching time is reached, the outlet 161 of the liquid collection device 16 is opened by the sliding plate 17 on the sliding liquid collection device 16 to discharge the dechlorinated clean coal.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A combined flotation ash reduction and leaching chlorination reduction production unit, characterized in that, include: The frame (1) has a receiving cavity (11) for sorting clean coal; The first rotating shaft (2) is rotatably mounted on the frame (1); The scraper (3) is rotatably mounted on the first rotating shaft (2). After the scraper (3) rotates with the first rotating shaft (2), it is used to scrape the refined coal out of the receiving cavity (11).

2. The combined flotation ash reduction and leaching chlorination reduction production apparatus according to claim 1, characterized in that, The scraper (3) rotates in the opposite direction to the first rotating shaft (2).

3. The combined flotation ash reduction and leaching chlorination reduction production apparatus according to claim 1, characterized in that, The scraper (3) has a first sliding cavity (31) and further includes: Mounting bracket (4) is disposed on the first rotating shaft (2), and the mounting bracket (4) has a second sliding cavity (41). The snap-fit ​​post (6) is slidably disposed in the first sliding cavity (31). After one end of the snap-fit ​​post (6) slides out of the first sliding cavity (31), it is used to slide into the second sliding cavity (41). One end of the snap-fit ​​post (6) is used to be rotatably disposed in the second sliding cavity (41). The elastic element (7) has one end disposed in the first sliding cavity (31) and the other end disposed on the snap-fit ​​post (6). The elastic element (7) is used to provide a force for one end of the snap-fit ​​post (6) to slide out of the first sliding cavity (31).

4. The combined flotation ash reduction and leaching chlorination reduction production apparatus according to claim 3, characterized in that, The snap-fit ​​post (6) has a square structure and also includes: The second rotating shaft (8) is rotatably disposed in the second sliding cavity (41). The snap-fit ​​post (6) is used to snap into the second rotating shaft (8). The snap-fit ​​post (6) is concentrically disposed with the second rotating shaft (8). The snap-fit ​​post (6) is rotatably disposed in the second sliding cavity (41) through the second rotating shaft (8). The first gear (9) is mounted on the second rotating shaft (8).

5. The flotation ash reduction and leaching chlorination combined production device according to claim 4, wherein the scraper (3) comprises a plurality of scrapers (3) arranged at intervals along the circumference of the first rotating shaft (2), and the first rotating shaft (2) comprises a second gear (21), characterized in that, Also includes: The third gear (10) is rotatably mounted on the mounting bracket (4), and the third gear (10) meshes with the second gear (21); A fourth gear (110) is disposed on the third gear (10), and the fourth gear (110) and the third gear (10) are concentrically disposed; A timing belt (120) is wound around the fourth gear (110) and the first gear (9).

6. The combined flotation ash reduction and leaching chlorination reduction production apparatus according to claim 1, characterized in that, The receiving cavity (11) has an opening (111), through which the scraper (3) scrapes out the clean coal, and further includes: A baffle (13) is movably mounted on the frame (1), and the baffle (13) is used to open or close the opening (111) after it is moved. The first connecting rod (14) is rotatably mounted on the frame (1) at one end and rotatably mounted on the baffle (13) at the other end; The second link (15) is rotatably mounted on the frame (1) at one end and rotatably mounted on the baffle (13) at the other end. The first link (14) and the second link (15) are arranged parallel to each other.

7. The combined flotation ash reduction and leaching chlorination reduction production apparatus according to claim 6, characterized in that, The baffle (13) has a snap-fit ​​protrusion (131), and the scraper (3) rotates to drive the baffle (13) to move.

8. The combined flotation ash reduction and leaching chlorination reduction production apparatus according to claim 6, characterized in that, Also includes: A liquid collecting device (16) is disposed on the frame (1), the opening (111) leads to the liquid collecting device (16), and the liquid collecting device (16) has an outlet (161).

9. The combined flotation ash reduction and leaching chlorination reduction production apparatus according to claim 8, characterized in that, Also includes: A sliding plate (17) is slidably disposed on the liquid collecting member (16). After the sliding plate (17) slides, it is used to open or close the outlet (161).

10. A combined flotation ash reduction and leaching chloride reduction production process, characterized in that, Includes the following steps: S1. The ground coal is fed into the flotation chamber (11) of the flotation machine; S2. Turn on the agitator of the flotation machine to generate a large number of bubbles. Because the surface of the coal particles has been treated with reagents, the coal particles will selectively adhere to the bubbles, forming a foam layer and floating on the water surface, while impurities will sink or remain suspended in the water. S3. Start the first rotating shaft (2), which drives the scraper (3) to rotate; the rotation of the scraper (3) can scrape the fine coal floating on the water surface out of the receiving cavity (11); S4. Multiple scrapers (3) can rotate synchronously through the cooperation of gears and timing belts (120) to ensure scraping efficiency and uniformity. When scraping clean coal, the two edges of the scraper (3) work alternately to extend the service life of the scraper (3). S5. The scraper (3) scrapes the clean coal out from the opening (111) of the receiving cavity (11). When the scraper (3) rotates, the edge of the scraper (3) can interact with the snap-fit ​​protrusion (131) of the baffle (13), causing the baffle (13) to automatically open or close the opening (111). S6. The scraped clean coal is transported to the liquid collection unit (16). The liquid collection unit (16) is set on the frame (1) and connected to the opening (111) of the receiving cavity (11). In the liquid collection unit (16), a water pipe is connected, water is added into the liquid collection unit (16), and the outlet (161) is closed so that the clean coal is soaked in water and the leaching and dechlorination operation begins. S7. When the required leaching time is reached, the outlet (161) of the liquid collector (16) is opened by the sliding plate (17) on the sliding liquid collector (16) to discharge the dechlorinated clean coal.

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