Solid waste fluorogypsum recycling device and method for reducing flying dust

Abstract

The application discloses a device and method for recycling solid waste fluorogypsum and reducing flying dust, and relates to the technical field of solid waste fluorogypsum recycling, which comprises a crushing mechanism, the output end of the crushing mechanism is connected with a grinding mechanism through a lifting mechanism, and fluorogypsum crushed by the crushing mechanism is transmitted to the grinding mechanism for grinding through the lifting mechanism; a scraping drum mechanism is used to scrape and crush the large fluorogypsum, and the fluorogypsum can be continuously scraped in succession in the rotating process until the fluorogypsum is completely broken into small pieces; the small pieces are relatively fine and uniform; the scraping plate of the scraping drum mechanism is eccentrically arranged, and is automatically extended and retracted in cooperation with the structure inside the inner cylinder; the scraping plate is gradually extended for scraping the fluorogypsum in the upward rotating process, and is gradually retracted in the downward moving process, so that the fluorogypsum between the scraping plates can be better separated, and the fluorogypsum can be completely separated in combination with the brushing of the brush strips.

Description

Technical Field

[0001] This invention relates to the field of solid waste fluorogypsum recycling technology, specifically to a device and method for recycling and reusing solid waste fluorogypsum with reduced dust generation. Background Technology

[0002] Fluoropyrogypsum, a solid waste product, is an industrial byproduct mainly composed of anhydrous calcium sulfate (CaSO4) generated during the production of hydrofluoric acid. my country's annual production reaches tens of millions of tons, but over 60% remains unutilized. Large-scale stockpiling not only occupies land resources but also poses a potential environmental threat due to impurities such as fluorides and metal ions. Its recycling faces technical bottlenecks, including impurity separation, activity activation, and a lack of application standards. Currently, resource recovery is mainly achieved through cement retarders (accounting for approximately 70%), building materials (such as gypsum blocks and plaster), and chemical raw materials (such as for the preparation of calcium fluoride and potassium sulfate). However, these methods suffer from low added value and insufficient market acceptance. In recent years, with increasingly stringent environmental policies and the promotion of the circular economy concept, the deep purification and high-value utilization of fluorogypsum (such as the preparation of gypsum-based functional materials and polymer materials), as well as interdisciplinary technological integration, have become research hotspots. The aim is to overcome technical and economic bottlenecks and promote the industry's transformation towards green and high-end development.

[0003] Publication No. CN218452491U discloses a gypsum material recycling and crushing device, including a shell. A feeding mechanism is fixedly installed in the middle of the upper end of the shell, and a discharging mechanism is fixedly installed in the lower end of the shell. A transmission mechanism one is fixedly installed in the right end of the shell, and a transmission mechanism two is fixedly installed in the lower left end of the shell. A crushing mechanism is fixedly installed in the upper part of the inner cavity of the shell, and a grinding mechanism is provided in the lower part of the crushing mechanism. The grinding mechanism is fixedly installed on the inner wall of the shell.

[0004] As shown in the above technology, when recycling gypsum materials, they need to be crushed and ground. Currently, the crushing of solid gypsum is generally done by using a toothed roller to crush the gypsum into the required size. However, if the gypsum contains moisture and is not thoroughly dried beforehand, the crushed gypsum will clump together during the crushing process and fill the spaces between the teeth. As it is squeezed, it becomes increasingly difficult to detach, affecting the crushing effect and making the method defective. Thoroughly drying large pieces of gypsum in advance requires a long time and is costly. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a device and method for recycling and reusing solid waste fluorogypsum with reduced dust generation, solving the problems existing in current gypsum recycling and crushing devices.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a device for recycling and reusing solid waste fluorogypsum with reduced dust emission, comprising a crushing mechanism, wherein the output end of the crushing mechanism is connected to a grinding mechanism via a lifting mechanism, for conveying the crushed fluorogypsum to the grinding mechanism for grinding via the lifting mechanism, the crushing mechanism comprising:

[0007] The main unit is mounted on the ground via a fixed base frame, and a top plate is fixedly connected to the top of the main unit.

[0008] The feeding hopper is fixedly connected to the top of the top plate and is used to receive fluorogypsum. The feeding hopper is equipped with a structure to prevent dust from rising.

[0009] The frame is fixedly connected to the bottom of the top plate. A grid plate is fixedly connected to the top of the inner side of the frame to separate the fluorogypsum blocks. The top of the grid plate is a blade to break the falling fluorogypsum blocks first.

[0010] A scraping drum mechanism is rotatably connected inside the frame and is used to scrape the bottom of the fluorogypsum blocks inside the grid. The scraping drum mechanism includes an inner cylinder coaxially arranged with the frame. Several pairs of limiting slide plates are uniformly fixedly connected to the inner wall of the inner cylinder, and a scraper that can penetrate the inner cylinder is slidably connected between each pair of limiting slide plates. The inner end of the scraper is rotatably connected to a roller through a wheel frame. An eccentric cylinder is fixedly fixed upwards inside the inner cylinder. An elastic element is installed between the limiting slide plates and the scraper. The elastic element elastically pushes the roller to always roll in contact with the eccentric cylinder so that the scraper at the bottom is drawn into the inner cylinder.

[0011] Preferably, both ends of the inner cylinder are fixedly connected to end plates, and a support shaft is fixedly connected through the axis of the end plate. An outer ring is coaxially fixedly connected to the outer surface of the end plate, and two rows of parallel wave rings are fixedly connected to the outer surface of the outer ring. The main unit housing is fixedly connected to the support plates connecting the two ends of the frame. A brush strip is slidably connected between the two support plates and located inside the frame and at the bottom of the scraping drum mechanism. The bristles of the brush strip are in contact with the surface of the inner cylinder. Rollers are rotatably connected to the top of both ends of the brush strip, and the rollers are slidably connected to the inner side of the wave rings.

[0012] Preferably, a support shaft is fixedly connected through the center of the end plate, and the two ends of the support shaft are rotatably connected to the two sides of the inner wall of the main unit box through bearings. One end of the support shaft extends out of the main unit box. A drive motor is fixedly connected to the top of the base frame, and the drive motor is connected to one end of the support shaft through a transmission belt.

[0013] Preferably, a collection cover is fixedly connected to the bottom of the enclosure, and the bottom of the collection cover is connected to a hot drying conveyor device, the hot drying conveyor device comprising:

[0014] The heating jacket has two cylindrical cavities inside, and the inner wall of the cylindrical cavity is a heating plate. One end of the upper layer of the heating jacket is connected to the bottom of the collection hood through a receiving pipe.

[0015] Two parallel rows of heat-conducting rotating cylinders are rotatably connected to the two cylindrical cavities of the heating jacket, and one end of each of the two heat-conducting rotating cylinders is fixedly connected to a toothed ring.

[0016] The adapter pipe is rotatably connected to the inner walls of the two toothed rings;

[0017] A low-speed motor is fixedly connected to the other end of the heating jacket, and a gear that meshes with two gear rings simultaneously is fixedly connected to the output shaft of the low-speed motor.

[0018] Preferably, the inner wall of the heat-conducting rotating cylinder is spirally connected with a spiral strip to push the fluorogypsum to move axially, and the inner wall of the heat-conducting rotating cylinder is circumferentially connected with multiple axially extended pusher strips to push the fluorogypsum to flip. The axis of the heat-conducting rotating cylinder is provided with an elastic rod, and the side of the elastic rod is fixedly connected with a dispersing ring. One end of the elastic rod passes through the transfer pipe, and the point through which the elastic rod passes is engaged with the transfer pipe by a fixedly sleeved rectangular block.

[0019] A protrusion is fixedly connected to one side of the rectangular block and inside the adapter tube to restrict the rectangular block from sliding outward. The end of the elastic rod located outside the adapter tube is threaded with a double nut to restrict the rectangular block from sliding inward. The connection between the heat-conducting rotating cylinder and the adapter tube is sealed and fastened by a sealing ring to prevent the heat-conducting rotating cylinder from axially separating from the adapter tube.

[0020] Preferably, the feeding hopper includes:

[0021] The bucket body is fixedly connected to the top of the roof plate, and one side of the bottom of the bucket body is connected to the roof plate;

[0022] The inclined plate has multiple plates on opposite sides of the inner wall of the hopper, and the opposite ends of the inclined plate are inclined downward, so that the fluorogypsum is guided by the inclined plate to slide in an S-shape.

[0023] The dust-blocking cloth is fixedly connected to the bottom of the lower end of the inclined plate, and the bottom of the dust-blocking cloth naturally hangs down to the end of the inclined plate on the next side.

[0024] Preferably, the lifting mechanism includes:

[0025] The outer shell has its upper and lower ends connected to the feed inlet of the grinding mechanism and the discharge outlet of the main unit, respectively. The outer shell is inclined and has a built-in filter structure to screen out fluorogypsum powder in advance.

[0026] The auger lifting mechanism consists of a motor and an auger mounted on its output end. The motor is fixedly mounted on the top of the housing, while the auger is rotatably mounted inside the housing.

[0027] Preferably, the housing comprises:

[0028] The main cylinder has a channel on one side for discharging fluorogypsum powder;

[0029] The feed inlet is fixedly connected to the bottom end of the side of the main cylinder, and the feed inlet is rotatably connected to the output end of the hot drying conveyor.

[0030] The discharge port is fixedly connected to the top of the other side of the main cylinder, and the bottom of the discharge port covers the feed end of the grinding mechanism;

[0031] The ash collection trough is fixedly connected to the side of the main cylinder and covers the through groove;

[0032] The ash discharge port is fixedly connected to the bottom of the ash collection trough, and has an opening on the front side to discharge fluorogypsum powder;

[0033] The metal mesh is fixedly connected inside the main cylinder, and a through hole corresponding to the feed inlet is opened on one side of the bottom end of the metal mesh.

[0034] Preferably, the grinding mechanism is mounted on the ground via a sliding base at its bottom, the sliding base comprising:

[0035] The base plate is fixedly connected to the ground;

[0036] The slide rails are arranged in two parallel rows and are fixedly connected to the top of the base plate by bolts;

[0037] The mounting plate is fixedly connected to the bottom of the grinding mechanism, and the mounting plate is slidably mounted on the slide rail via a slider fixedly connected to the bottom.

[0038] A pin is inserted through the mounting plate and is positioned by engaging with bolt holes on the slide rail.

[0039] This invention also discloses a method for using a device for recycling and reusing solid waste fluorogypsum to reduce dust, comprising the following steps:

[0040] Step 1: Put the fluorogypsum blocks into the feeding hopper, and the fluorogypsum blocks will slide into the enclosure.

[0041] Step 2: Start the drive mechanism to rotate the scraper drum mechanism, scrape the bottom of the fluorogypsum block off, so that the large fluorogypsum block is broken into small pieces and discharged downwards. During the rotation of the scraper drum mechanism, rotate until the scraper at the bottom is retracted into the inner cylinder to ensure that all the pieces fall off and avoid them from adhering between the scraper due to moisture.

[0042] Step 3: The discharged fluorogypsum fragments are lifted by the lifting mechanism into the grinding mechanism for final grinding into powder and output.

[0043] This invention provides a device and method for recycling and reusing solid waste fluorogypsum with reduced dust generation. Compared with the prior art, it has the following advantages:

[0044] 1. This dust-reducing solid waste fluorogypsum recycling and reuse device uses a scraping drum mechanism to scrape and crush large pieces of fluorogypsum. During rotation, continuous scraping occurs until the fluorogypsum is completely broken into smaller pieces. This method produces relatively fine and uniform pieces. The scraper of the scraping drum mechanism is eccentrically positioned and automatically extends and retracts in conjunction with the internal structure of the inner drum. As the scraper rotates upwards, it gradually extends to scrape the fluorogypsum. The advantage of this gradual extension is that the scraper contacts the first column of fluorogypsum. The depth between the two sections is relatively shallow, allowing only a shallow layer of fluoroplaster to be scraped. As the scraper extends, its depth changes, and because fluoroplaster fragments have already accumulated inside, only a shallow layer can be scraped when scraping the next section of fluoroplaster. This method ensures that the fluoroplaster is scraped relatively evenly at each angle. Furthermore, the scraper gradually retracts as it moves downwards, allowing the fluoroplaster between the scrapers to separate better and preventing it from clumping together again due to moisture and becoming difficult to remove. Combined with the cleaning of the brush strip, this ensures that the fluoroplaster is completely removed.

[0045] 2. This dust-reducing solid waste fluorogypsum recycling and reuse device uses a hot drying conveyor below the scraper drum mechanism to convey the initially crushed fluorogypsum in a U-shape. Heating during conveying dries the fluorogypsum, removing internal moisture and facilitating subsequent grinding. The hot drying conveyor uses two rows of rotating heat-conducting drums. The drums utilize spiral strips to promote slow axial movement of the fluorogypsum, while pusher strips turn the fluorogypsum over, preventing accumulation and improving drying efficiency. During the turning process, the fluorogypsum is pushed upwards and then falls, where it is further dispersed by a dispersing ring, further improving drying efficiency by dispersing any lumps caused by moisture.

[0046] 3. The dust-reducing solid waste fluorogypsum recycling and reuse device adopts an S-shaped downward winding conveying method for fluorogypsum. With the setting of dust-blocking cloth, the fluorogypsum passes through multiple dust-blocking structures, thereby avoiding the problem of a large amount of dust rising. Some of the dust is blocked in the feeding hopper, which is more environmentally friendly and hygienic.

[0047] 4. This dust-reducing solid waste fluorogypsum recycling and reuse device uses a lifting mechanism to lift the fluorogypsum discharged from the bottom of the crushing mechanism to the upper layer for feeding into the grinding mechanism. On the one hand, the layout is reasonable, eliminating the need to stack the crushing and grinding mechanisms on top of each other. On the other hand, the lifting mechanism and the grinding mechanism are not fixedly connected, so it does not affect the movement of the grinding mechanism. At the same time, the lifting mechanism is a closed conveyor, which does not cause dust. Furthermore, during the conveying process, the lifting mechanism can also pre-screen and output the fine fluorogypsum powder, preventing it from being discharged into the grinding mechanism, thereby reducing the grinding pressure of the grinding mechanism and improving efficiency.

[0048] 5. This dust-reducing solid waste fluorogypsum recycling and reuse device uses a sliding base to slide and install the grinding mechanism, making the grinding mechanism movable. When it is necessary to open the side door of the grinding mechanism for cleaning and maintenance, the grinding mechanism can be moved directly away, so that the lifting mechanism will not affect the maintenance operation. After moving the grinding mechanism back, it can also be easily and quickly fixed by the pin, making it flexible and convenient to use. Attached Figure Description

[0049] Figure 1 This is a front perspective view of the present invention;

[0050] Figure 2 This is a rear perspective view of the present invention;

[0051] Figure 3 This is a schematic diagram of the internal structure of the main unit chassis of the present invention;

[0052] Figure 4 This is an assembly diagram of the frame, scraping drum mechanism and support plate of the present invention;

[0053] Figure 5 This is a side view of the frame and scraping drum mechanism of the present invention;

[0054] Figure 6 This is a schematic diagram of the brush bar and scraping drum mechanism of the present invention;

[0055] Figure 7 This is a schematic diagram of a partial structure of the scraping drum mechanism of the present invention;

[0056] Figure 8 This is a perspective view of the hot drying conveyor device of the present invention;

[0057] Figure 9 This is a cross-sectional view of the hot drying conveyor device of the present invention;

[0058] Figure 10 This is a cross-sectional view of the outer casing of the present invention;

[0059] Figure 11 This is a cross-sectional view of the feeding hopper of the present invention;

[0060] Figure 12 This is an exploded view of the sliding base of the present invention.

[0061] In the diagram: 1 Crushing mechanism, 11 Main chassis, 12 Top plate, 13 Feed hopper, 131 Hopper body, 132 Inclined plate, 133 Dust-blocking cloth, 14 Enclosure frame, 141 Grid plate, 15 Scraper rotary drum mechanism, 151 End plate, 152 Inner cylinder, 153 Limiting slide plate, 154 Scraper, 155 Wheel frame, 156 Roller, 157 Elastic element, 158 Eccentric cylinder, 159 Outer ring, 1510 Wave ring, 1511 Support shaft, 1 6. Hot drying conveyor device, 161 heating jacket, 162 receiving pipe, 163 heat-conducting rotary drum, 164 spiral blade, 165 pusher bar, 166 gear ring, 167 low-speed motor, 168 gear, 169 adapter pipe, 1610 elastic rod, 1611 dispersing ring, 1612 rectangular block, 17 support plate, 18 brush bar, 181 roller, 19 drive motor, 110 transmission belt, 111 collection cover, 112 base frame;

[0062] 2 Lifting mechanism, 21 Outer shell, 211 Main cylinder, 212 Feed inlet, 213 Discharge outlet, 214 Ash collection trough, 215 Ash discharge outlet, 216 Metal mesh, 22 Screw conveyor lifting mechanism;

[0063] 3. Grinding mechanism;

[0064] 4. Sliding base, 41. Base plate, 42. Mounting plate, 43. Slide rail, 44. Slider, 45. Pin. Detailed Implementation

[0065] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0066] See Figures 1-12 This invention discloses a device for recycling and reusing solid waste fluorogypsum to reduce dust, and provides the following five technical solutions:

[0067] First embodiment: Includes a crushing mechanism 1, the output end of which is connected to a grinding mechanism 3 via a lifting mechanism 2, for conveying the crushed fluorogypsum from the crushing mechanism 1 to the grinding mechanism 3 for grinding via the lifting mechanism 2. The crushing mechanism 1 includes:

[0068] The main unit 11 is mounted on the ground via a base frame 112 fixed at the bottom, and a top plate 12 is fixedly connected to the top of the main unit 11.

[0069] The feeding hopper 13 is fixedly connected to the top of the top plate 12 and is used to receive fluorogypsum. The feeding hopper 13 is equipped with a structure to prevent dust from rising.

[0070] The frame 14 is fixedly connected to the bottom of the top plate 12. A grid plate 141 is fixedly connected to the top of the inner side of the frame 14 to separate the fluorogypsum blocks. The top of the grid plate 141 is a blade to break the falling fluorogypsum blocks first.

[0071] The scraping drum mechanism 15 is rotatably connected inside the frame 14 and is used to scrape the bottom of the fluorogypsum blocks inside the grid 141. The scraping drum mechanism 15 includes an inner cylinder 152 coaxially arranged with the frame 14. Several pairs of limiting slide plates 153 are uniformly fixedly connected to the inner wall of the inner cylinder 152 in a circumferential direction, and a scraper 154 that can penetrate the inner cylinder 152 is slidably connected between each pair of limiting slide plates 153. The inner end of the scraper 154 is rotatably connected to a roller 156 through a wheel frame 155. An eccentric cylinder 158 is fixedly fixed upwards inside the inner cylinder 152. An elastic element 157, which is a spring, is installed between the limiting slide plate 153 and the scraper 154. The sides of the slide plate 153 and the scraper 154 need to be provided with a blocking structure to limit the bending of the elastic element 157, so that the elastic element 157 can only extend and retract. The elastic element 157 elastically pushes the roller 156 to always be in contact. The eccentric cylinder 158 rotates so that the scraper 154 at the bottom is drawn into the inner cylinder 152. Both ends of the inner cylinder 152 are fixedly connected to end plates 151. The axis of the end plates 151 is fixedly connected to a support shaft 1511. The outer surface of the end plates 151 is coaxially fixedly connected to an outer ring 159. The outer surface of the outer ring 159 is fixedly connected to two rows of parallel wave rings 1510. The main housing 11 is fixedly connected to the support plates 17 that connect the two ends of the frame 14. The two support plates 17 are slidably connected to the bottom of the scraper drum mechanism 15 and to the inner side of the frame 14. The support plates 17 are provided with wear-resistant sleeves at the points through which the brush strips 18 penetrate to improve wear resistance. The bristles of the brush strips 18 are in contact with the surface of the inner cylinder 152. The top of both ends of the brush strips 18 are rotatably connected to rollers 181, and the rollers 181 are slidably connected to the inner side of the wave rings 1510.

[0072] like Figure 5 From the perspective of the scraper 154, when it rotates to the bottom right corner of the frame 14, it extends to its maximum length and when it rotates to the position of the brush strip 18, it retracts completely into the inner cylinder 152.

[0073] A support shaft 1511 is fixedly connected through the center of the end plate 151. The two ends of the support shaft 1511 are rotatably connected to the two sides of the inner wall of the main unit 11 through bearings, and one end of the support shaft 1511 extends out of the main unit 11. A drive motor 19 is fixedly connected to the top of the base frame 112, and the drive motor 19 is connected to one end of the support shaft 1511 through a transmission belt 110.

[0074] This device uses a scraping drum mechanism 15 to scrape and crush large pieces of fluorogypsum. During rotation, it can continuously scrape until the fluorogypsum is completely broken into smaller pieces. These smaller pieces are relatively fine and uniform. The scraper blades 154 of the scraping drum mechanism 15 are eccentrically positioned and automatically extend and retract in conjunction with the internal structure of the inner cylinder 152. As the scraper blades 154 rotate upwards, they gradually extend to scrape the fluorogypsum. The advantage of this gradual extension is that the depth between the scraper blades 154 is shallower when contacting the first row of fluorogypsum. The scraper can scrape a shallower layer of fluoroplaster. As the scraper 154 extends, its depth changes. Because it already contains fragments of fluoroplaster, it can only scrape a shallower layer when scraping the next row of fluoroplaster. This method ensures that the fluoroplaster is scraped more evenly at each angle. Furthermore, the scraper 154 will gradually retract as it moves downward, which allows the fluoroplaster between the scrapers 154 to separate better. This prevents the fluoroplaster from clumping together again due to moisture and becoming difficult to fall off. Combined with the cleaning of the brush strip 18, this ensures that the fluoroplaster is completely removed.

[0075] The second embodiment differs from the first embodiment in that: a collection cover 111 is fixedly connected to the bottom of the frame 14, and a hot drying conveyor device 16 is connected to the bottom of the collection cover 111. The hot drying conveyor device 16 includes:

[0076] The heating jacket 161 has two cylindrical cavities inside. The inner wall of the cylindrical cavity is a heating plate. One end of the upper layer of the heating jacket 161 is connected to the bottom of the collection cover 111 through the receiving pipe 162.

[0077] Two rows of heat-conducting rotating cylinders 163 are arranged in parallel and are rotatably connected to the two cylindrical cavities of the heating jacket 161. One end of each heat-conducting rotating cylinder 163 is fixedly connected to a toothed ring 166.

[0078] The adapter pipe 169 is rotatably connected to the inner walls of the two toothed rings 166;

[0079] A low-speed motor 167 is fixedly connected to the other end of the heating jacket 161, and a gear 168 that meshes with two gear rings 166 simultaneously is fixedly connected to the output shaft of the low-speed motor 167.

[0080] The inner wall of the heat-conducting rotating cylinder 163 is spirally connected with a spiral strip 164 to push the fluorogypsum to move axially. The inner wall of the heat-conducting rotating cylinder 163 is also circumferentially connected with multiple axially extended pusher strips 165 to push the fluorogypsum to flip. An elastic rod 1610 is provided at the axis of the heat-conducting rotating cylinder 163, and a dispersing ring 1611 is fixedly connected to the side of the elastic rod 1610. One end of the elastic rod 1610 passes through the adapter pipe 169, and the point through which the elastic rod 1610 passes is engaged with the adapter pipe 169 by a fixedly fitted rectangular block 1612.

[0081] A protrusion is fixedly connected to one side of the rectangular block 1612 and inside the adapter tube 169 to restrict the rectangular block 1612 from sliding outward. A double nut is threaded to one end of the elastic rod 1610 outside the adapter tube 169 to restrict the rectangular block 1612 from sliding inward into the adapter tube 169. The connection between the heat-conducting rotating cylinder 163 and the adapter tube 169 is sealed and fastened by a sealing ring to restrict the heat-conducting rotating cylinder 163 from axially separating from the adapter tube 169.

[0082] By setting a hot drying conveyor 16 below the scraper drum mechanism 15, the initially crushed fluorogypsum can be conveyed in a U-shape. During the conveying process, heating can be carried out to dry the fluorogypsum, remove internal moisture, and facilitate subsequent grinding. The hot drying conveyor 16 uses two rows of heat-conducting drums 163 to convey the fluorogypsum. The heat-conducting drums 163 use spiral strips 164 to promote the slow axial movement of the fluorogypsum, and pusher strips 165 to turn the fluorogypsum, thereby avoiding accumulation and improving the drying effect. During the turning process, the fluorogypsum is pushed to the top and then falls, and will be further dispersed by the dispersing ring 1611, which can promote the dispersion of fluorogypsum that has clumped due to moisture, further improving the drying efficiency.

[0083] The main difference between the third and first implementation methods is that the feeding hopper 13 includes:

[0084] The bucket body 131 is fixedly connected to the top of the top plate 12, and one side of the bottom of the bucket body 131 is connected to the top plate 12;

[0085] Inclined plate 132 is provided on both sides of the inner wall of bucket body 131, and the opposite ends of inclined plate 132 are inclined downward, so that fluorogypsum is guided by inclined plate 132 to slide in an S-shape.

[0086] Dust-blocking cloth 133 is fixedly connected to the bottom of the lower end of the inclined plate 132, and the bottom of the dust-blocking cloth 133 naturally hangs down to the end of the lower inclined plate 132.

[0087] The S-shaped downward conveying method for fluorogypsum, combined with the dust-blocking cloth 133, allows the fluorogypsum to pass through multiple dust-blocking structures, thus avoiding the problem of a large amount of dust rising upwards. This keeps some of the dust trapped in the feeding hopper 13, making it more environmentally friendly and hygienic.

[0088] The fourth embodiment differs from the first embodiment in that the lifting mechanism 2 includes:

[0089] The outer shell 21 has its upper and lower ends connected to the feed inlet of the grinding mechanism 3 and the discharge outlet of the main unit 11, respectively. The outer shell 21 is inclined and has a built-in filter structure to screen out the fluorogypsum powder in advance.

[0090] The auger lifting mechanism 22 consists of a motor and an auger installed at its output end. The motor is fixedly installed at the top of the housing 21, and the auger is rotatably installed inside the housing 21.

[0091] The housing 21 includes:

[0092] The main cylinder 211 has a channel on one side for discharging fluorogypsum powder;

[0093] The feed inlet 212 is fixedly connected to the bottom end of the side of the main cylinder 211, and the feed inlet 212 is rotatably connected to the output end of the hot drying conveyor 16.

[0094] The discharge port 213 is fixedly connected to the top of the other side of the main cylinder 211, and the bottom of the discharge port 213 covers the feed end of the grinding mechanism 3;

[0095] The ash collection trough 214 is fixedly connected to the side of the main cylinder 211 and covers the through groove;

[0096] Ash discharge port 215 is fixedly connected to the bottom of ash collection trough 214, and has an opening on the front side to discharge fluorogypsum powder;

[0097] Metal mesh 216 is fixedly connected inside the main cylinder 211, and a through hole corresponding to the feed inlet 212 is opened on one side of the bottom end of metal mesh 216.

[0098] The lifting mechanism 2 can lift the fluorogypsum discharged from the bottom of the crushing mechanism 1 to the upper layer and feed it into the grinding mechanism 3. On the one hand, the layout is reasonable, and there is no need to stack the crushing mechanism 1 and the grinding mechanism 3 on top of each other. On the other hand, the lifting mechanism 2 and the grinding mechanism 3 are not fixedly connected, so it does not affect the movement of the grinding mechanism 3. At the same time, the lifting mechanism 2 is a closed conveying mechanism, which will not cause dust. In addition, during the conveying process, the lifting mechanism 2 can also screen out the fine fluorogypsum powder in advance, so that it is not discharged into the grinding mechanism 3, thereby reducing the grinding pressure of the grinding mechanism 3 and improving efficiency.

[0099] The fifth embodiment differs from the first embodiment mainly in that the grinding mechanism 3 is mounted on the ground via a sliding base 4 at its bottom. The sliding base 4 includes:

[0100] Base plate 41 is fixedly connected to the ground;

[0101] The slide rails 43 are arranged in two parallel rows and are fixedly connected to the top of the base plate 41 by bolts;

[0102] Mounting plate 42 is fixedly connected to the bottom of grinding mechanism 3, and mounting plate 42 is slidably mounted on slide rail 43 via slider 44 fixedly connected to the bottom;

[0103] The pin 45 is inserted through the mounting plate 42 and is positioned by connecting to the bolt hole on the slide rail 43.

[0104] The grinding mechanism 3 is slidably installed by setting a sliding base 4, which makes the grinding mechanism 3 movable. When it is necessary to open the side door of the grinding mechanism 3 for cleaning and maintenance, the grinding mechanism 3 can be moved directly away, so that the lifting mechanism 2 will not affect the maintenance operation. After the grinding mechanism 3 is moved back, it can also be easily and quickly fixed by the pin 45, which is flexible and convenient to use.

[0105] This invention also discloses a method for using a device for recycling and reusing solid waste fluorogypsum to reduce dust, comprising the following steps:

[0106] Step 1: Put the fluorogypsum blocks into the feeding hopper 13. The fluorogypsum blocks slide down the inclined plate 132 layer by layer into the frame 14, and push open the dust-blocking cloth 133 to pass through during this process.

[0107] Step 2: Start the drive motor 19 and use the transmission belt 110 to drive the scraping drum mechanism 15 to rotate. During the rotation, the upper scraper 154 scrapes the bottom of the fluorogypsum block, causing the large fluorogypsum block to be broken into small pieces and pushed to the bottom. When the scraper 154 moves to the bottom, it gradually retracts into the inner cylinder 152, causing the pieces to fall. At the same time, the wave ring 1510 pushes the roller 181 during the rotation, causing the brush strip 18 to slide back and forth axially, brushing off the remaining small amount of fluorogypsum adhering to the surface of the inner cylinder 152.

[0108] Step 3: The falling fluorogypsum fragments are guided into the heat-conducting rotating drum 163 through the receiving pipe 162. The heat-conducting rotating drum 163 is heated by the heating jacket 161. At the same time, driven by the low-speed motor 167 and the meshing of the gear ring 166 and gear 168, the heat-conducting rotating drum 163 is driven to rotate. During the rotation, the pusher bar 165 pushes the fluorogypsum fragments to a high place and drops them down. The fluorogypsum that comes into contact with the dispersing ring 1611 is dispersed. During the rotation, the heat-conducting rotating drum 163 uses the spiral bar 164 to gradually push the fluorogypsum axially, and finally outputs it from one end into the lifting mechanism 2.

[0109] Step 4: Fluorogypsum fragments first enter the metal mesh 216 through the feed inlet 212, and then move upward under the drive of the auger lifting mechanism 22. During this process, some fine fluorogypsum passes through the metal mesh 216 and falls into the ash collection trough 214, and is discharged forward from the ash discharge port 215. The fluorogypsum lifted to the top is discharged into the grinding mechanism 3 through the discharge port 213 for grinding, and finally ground into powder for output.

[0110] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0111] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0112] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for recycling and reusing solid waste fluorogypsum with reduced dust emission, comprising a crushing mechanism, characterized in that: The output end of the crushing mechanism is connected to a grinding mechanism via a lifting mechanism, which is used to transfer the crushed fluorinated gypsum from the crushing mechanism to the grinding mechanism for grinding. The crushing mechanism includes: The main unit is mounted on the ground via a fixed base frame, and a top plate is fixedly connected to the top of the main unit. The feeding hopper is fixedly connected to the top of the top plate and is used to receive fluorogypsum. The feeding hopper is equipped with a structure to prevent dust from rising. The frame is fixedly connected to the bottom of the top plate. A grid plate is fixedly connected to the top of the inner side of the frame to separate the fluorogypsum blocks. The top of the grid plate is a blade to break the falling fluorogypsum blocks first. A scraping drum mechanism is rotatably connected inside the frame and is used to scrape the bottom of the fluorogypsum blocks inside the grid. The scraping drum mechanism includes an inner cylinder coaxially arranged with the frame. Several pairs of limiting slide plates are uniformly fixedly connected to the inner wall of the inner cylinder, and a scraper that can penetrate the inner cylinder is slidably connected between each pair of limiting slide plates. The inner end of the scraper is rotatably connected to a roller through a wheel frame. An eccentric cylinder is fixedly fixed upwards inside the inner cylinder. An elastic element is installed between the limiting slide plates and the scraper. The elastic element elastically pushes the roller to always roll in contact with the eccentric cylinder so that the scraper at the bottom is drawn into the inner cylinder.

2. The device for recycling and reusing solid waste fluorogypsum to reduce dust pollution according to claim 1, characterized in that: Both ends of the inner cylinder are fixedly connected to end plates. A support shaft is fixedly connected through the axis of the end plate. An outer ring is fixedly connected to the outer surface of the end plate coaxially. Two rows of parallel wave rings are fixedly connected to the outer surface of the outer ring. The main unit is fixedly connected to the support plates connecting the two ends of the frame. A brush strip is slidably connected between the two support plates and located inside the frame and at the bottom of the scraping drum mechanism. The bristles of the brush strip are in contact with the surface of the inner cylinder. Rollers are rotatably connected to the top of both ends of the brush strip, and the rollers are slidably connected to the inner side of the wave rings.

3. The device for recycling and reusing solid waste fluorogypsum to reduce dust pollution according to claim 2, characterized in that: A support shaft is fixedly connected through the center of the end plate. The two ends of the support shaft are rotatably connected to the two sides of the inner wall of the main unit chassis through bearings, and one end of the support shaft extends out of the main unit chassis. A drive motor is fixedly connected to the top of the base frame, and the drive motor is connected to one end of the support shaft through a transmission belt.

4. The device for recycling and reusing solid waste fluorogypsum to reduce dust pollution according to claim 1, characterized in that: A collection cover is fixedly connected to the bottom of the enclosure, and a hot drying conveyor device is connected to the bottom of the collection cover. The hot drying conveyor device includes: The heating jacket has two cylindrical cavities inside, and the inner wall of the cylindrical cavity is a heating plate. One end of the upper layer of the heating jacket is connected to the bottom of the collection hood through a receiving pipe. Two parallel rows of heat-conducting rotating cylinders are rotatably connected to the two cylindrical cavities of the heating jacket, and one end of each of the two heat-conducting rotating cylinders is fixedly connected to a toothed ring. The adapter pipe is rotatably connected to the inner walls of the two toothed rings; A low-speed motor is fixedly connected to the other end of the heating jacket, and a gear that meshes with two gear rings simultaneously is fixedly connected to the output shaft of the low-speed motor.

5. The device for recycling and reusing solid waste fluorogypsum with reduced dust emission as described in claim 4, characterized in that: The inner wall of the heat-conducting rotating cylinder is spirally connected with a spiral strip to push the fluorogypsum to move axially. The inner wall of the heat-conducting rotating cylinder is also circumferentially connected with multiple axially extended pusher strips to push the fluorogypsum to flip. An elastic rod is provided at the axis of the heat-conducting rotating cylinder, and a dispersing ring is fixedly connected to the side of the elastic rod. One end of the elastic rod passes through the transfer pipe, and the point through which the elastic rod passes is engaged with the transfer pipe by a fixedly sleeved rectangular block. A protrusion is fixedly connected to one side of the rectangular block and inside the adapter tube to restrict the rectangular block from sliding outward. The end of the elastic rod located outside the adapter tube is threaded with a double nut to restrict the rectangular block from sliding inward. The connection between the heat-conducting rotating cylinder and the adapter tube is sealed and fastened by a sealing ring to prevent the heat-conducting rotating cylinder from axially separating from the adapter tube.

6. The device for recycling and reusing solid waste fluorogypsum to reduce dust pollution according to claim 1, characterized in that: The feeding hopper includes: The bucket body is fixedly connected to the top of the roof plate, and one side of the bottom of the bucket body is connected to the roof plate; The inclined plate has multiple plates on opposite sides of the inner wall of the hopper, and the opposite ends of the inclined plate are inclined downward, so that the fluorogypsum is guided by the inclined plate to slide in an S-shape. The dust-blocking cloth is fixedly connected to the bottom of the lower end of the inclined plate, and the bottom of the dust-blocking cloth naturally hangs down to the end of the inclined plate on the next side.

7. The device for recycling and reusing solid waste fluorogypsum to reduce dust pollution according to claim 1, characterized in that: The lifting mechanism includes: The outer shell has its upper and lower ends connected to the feed inlet of the grinding mechanism and the discharge outlet of the main unit, respectively. The outer shell is inclined and has a built-in filter structure to screen out fluorogypsum powder in advance. The auger lifting mechanism consists of a motor and an auger mounted on its output end. The motor is fixedly mounted on the top of the housing, while the auger is rotatably mounted inside the housing.

8. The device for recycling and reusing solid waste fluorogypsum with reduced dust emission according to claim 7, characterized in that: The outer casing includes: The main cylinder has a channel on one side for discharging fluorogypsum powder; The feed inlet is fixedly connected to the bottom end of the side of the main cylinder, and the feed inlet is rotatably connected to the output end of the hot drying conveyor. The discharge port is fixedly connected to the top of the other side of the main cylinder, and the bottom of the discharge port covers the feed end of the grinding mechanism; The ash collection trough is fixedly connected to the side of the main cylinder and covers the through groove; The ash discharge port is fixedly connected to the bottom of the ash collection trough, and has an opening on the front side to discharge fluorogypsum powder; The metal mesh is fixedly connected inside the main cylinder, and a through hole corresponding to the feed inlet is opened on one side of the bottom end of the metal mesh.

9. A device for recycling and reusing solid waste fluorogypsum to reduce dust pollution according to claim 1, characterized in that: The grinding mechanism is mounted on the ground via a sliding base at its bottom, the sliding base comprising: The base plate is fixedly connected to the ground; The slide rails are arranged in two parallel rows and are fixedly connected to the top of the base plate by bolts; The mounting plate is fixedly connected to the bottom of the grinding mechanism, and the mounting plate is slidably mounted on the slide rail via a slider fixedly connected to the bottom. A pin is inserted through the mounting plate and is positioned by engaging with bolt holes on the slide rail.

10. A method of using a solid waste fluorogypsum recycling and reuse device for reducing dust emissions according to any one of claims 1-9, characterized in that: Includes the following steps: Step 1: Put the fluorogypsum blocks into the feeding hopper, and the fluorogypsum blocks will slide into the enclosure. Step 2: Start the drive mechanism to rotate the scraper drum mechanism, scrape the bottom of the fluorogypsum block off, so that the large fluorogypsum block is broken into small pieces and discharged downwards. During the rotation of the scraper drum mechanism, rotate until the scraper at the bottom is retracted into the inner cylinder to ensure that all the pieces fall off and avoid them from adhering between the scraper due to moisture. Step 3: The discharged fluorogypsum fragments are lifted by the lifting mechanism into the grinding mechanism for final grinding into powder and output.

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