Crushing device with dust falling function
Through the combination of multi-axis crushing design and dust-reducing components, the problems of low crushing efficiency and insufficient purity of calcium hydroxide are solved, and efficient crushing and purity are achieved.
Patent Information
- Application Number
- CN202422225363.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-11
AI Technical Summary
The existing crushing devices have low efficiency in crushing calcium hydroxide materials of different shapes and hardness, and dust coverage in open-air environments affects the purity of the material and the service life of the equipment.
Using a multi-axis crushing design and dust reduction assembly, including multiple blades and dust removal systems, multiple blades are driven by a servo motor to crush materials from multiple directions and remove dust before crushing.
It improves the crushing efficiency, ensures the uniformity of material particle size distribution and product purity, and extends the service life of the equipment.
Smart Images
Figure CN223128217U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of calcium hydroxide production, in particular to a crushing device with a dust reduction function. Background Technique
[0002] Calcium hydroxide has a wide range of applications in the fields of industry, agriculture, environmental protection, etc. In industry, it can be used to produce calcium carbonate, bleaching powder, etc. In the chemical industry, it can be used as an important chemical raw material. Its aqueous solution is also called lime water and can react with carbon dioxide to form calcium carbonate precipitation. This reaction is often used to test carbon dioxide gas. In agriculture, as mentioned before, it can be used to improve acidic soil, adjust the soil pH value, and is beneficial to the growth of crops. In the environmental protection field, it can be used to treat wastewater containing heavy metal ions, etc.
[0003] A crushing device is a mechanical device used to crush solid materials into smaller particles. For example, a jaw crusher mainly crushes materials through the extrusion of a moving jaw plate and a stationary jaw plate, and is suitable for crushing materials of various hardnesses. A cone crusher uses the rotation and oscillation of a cone to crush materials by extrusion and bending, and is suitable for crushing materials with medium hardness or above. A counterattack crusher relies on a high-speed rotating rotor to drive a blow bar to impact and crush materials, and is often used for crushing materials with medium hardness or below. A hammer crusher crushes materials by hitting them with high-speed rotating hammer heads and is suitable for crushing brittle materials.
[0004] In the process of implementing the present utility model, the inventor found that the prior art has the following problems: 1. Calcium hydroxide materials have different shapes and hardnesses, and the crushing force in a single direction is difficult to comprehensively and efficiently crush materials in various forms. Since only one side of the blade applies force, the materials are prone to accumulate on the side without the blade during the crushing process. This accumulation will hinder the crushing process, making the blade unable to fully contact all the materials, further reducing the crushing efficiency. For example, during the crushing process, the materials may gradually accumulate on one side of the device, resulting in a reduction in the effective contact area between the blade and the materials, and it is necessary to frequently stop the machine to clean the accumulated materials, affecting the production progress; 2. Before the calcium hydroxide raw materials enter the crushing equipment, they are exposed to the open air environment, and dust will cover the calcium hydroxide materials. The dust will combine with the calcium hydroxide materials to form larger particle clusters, affecting the particle size distribution of the product. The uneven particle size distribution will bring difficulties to subsequent processing and use. For example, in the coating industry, calcium hydroxide with uneven particle size distribution may cause unstable performance of the coating, affecting the quality of the coating. Dust and other impurities will mix into the calcium hydroxide materials, resulting in a reduction in the purity of the final product. For some application fields with high purity requirements, such as the food, medicine, and chemical industries, impure calcium hydroxide will affect the performance and quality of the product. For example, in the pharmaceutical industry, impure calcium hydroxide may affect the efficacy and safety of drugs. The un-dusted calcium hydroxide materials contain dust and other impurities. When entering the crushing equipment, such as a crushing device with blades, these impurities will flow inside the equipment along with the materials. Dust particles may cause friction between the moving parts of the equipment, such as between the blade and the equipment housing, bearings, etc., accelerating the wear of the equipment. In the long run, it will shorten the service life of the crushing equipment and increase the cost of maintenance and replacement of the equipment. For example, dust may enter the bearing interior, destroying the lubrication of the bearing, resulting in increased wear of the bearing and even failure. Summary of the Utility Model
[0005] The purpose of the present utility model is to provide a crushing device with a dust reduction function to solve the problem proposed in the above background technology that when exposed to the open air environment, dust will cover the calcium hydroxide materials, and the dust will combine with the calcium hydroxide materials to form larger particle clusters, affecting the purity of the product after crushing. To achieve the above purpose, the present utility model provides the following technical solutions: A crushing device with a dust reduction function, including a fixed cover, one side of the fixed cover is installed with a barrel through screws, and a second support leg is provided below the barrel;
[0006] One side of the fixed cover is attached with a first gear, the first gear is engaged with a second gear above it, and the center of the first gear is inserted into the output shaft of a first servo motor;
[0007] Above the second support leg, a feeding box is installed by screws. Above the feeding box, a feeding port is installed by screws. On one side of the feeding port, the housing of a third servo motor is installed by screws. On one side of the output shaft of the third servo motor, a rotating shaft is installed by bolts. Stirring blades are installed on the surface of the rotating shaft. In front of the feeding box, the housing of a second servo motor is installed by screws. On one side of the output shaft of the second servo motor, a screw conveyor shaft is installed by bolts. On one side of the feeding box, a fixing plate is installed by screws. Above the fixing plate, a dust storage box is installed by screws. At the rear of the dust storage box, the outlet of a dust suction and blowing medium-pressure fan is installed by bolts. On one side of the inlet of the dust suction and blowing medium-pressure fan, a transmission pipe is installed by bolts. A fixing ring is inserted on the outer wall of the transmission pipe. Above the feeding box, a second filter screen is installed by screws;
[0008] At the center inside the barrel body, a main drive shaft is inserted. On the outside of the main drive shaft, a first blade is inserted. At the side inside the barrel body, a driven drive shaft is inserted. On the outside of the driven drive shaft, a second blade is inserted. At the bottom of the barrel body, a discharge port is welded. At the bottom of the barrel body, a first support leg is installed by screws. Inside the barrel body, a first filter screen is installed.
[0009] Further preferably, the first gear forms a rotating structure through a first servo motor, and the second gear forms a rotating structure through the first gear.
[0010] Further preferably, the main drive shaft forms a rotating structure through a first servo motor. Between the main drive shaft and the output shaft of the first servo motor, a bolt connection is adopted. Between the first gear and the output shaft of the first servo motor, a bolt connection is adopted. And the first gear forms a rotating structure through the first servo motor. The second gear forms a rotating structure through the first gear. The driven drive shaft forms a rotating structure through the second gear. On the surface of the main drive shaft, a number of first blades are horizontally and evenly arranged. On the surface of the driven drive shaft, a number of second blades are horizontally and evenly arranged.
[0011] Further preferably, three second gears are annularly arranged around the first gear.
[0012] Further preferably, the rotating shaft forms a rotating structure through a third servo motor, and the stirring blades form a rotating structure through the rotating shaft, and the stirring blades are horizontally arranged in a crisscross pattern.
[0013] Further preferably, the screw conveyor shaft forms a rotating structure through a second servo motor.
[0014] Further preferably, the internal structural dimensions above the feeding box are consistent with the external structural dimensions of the second filter screen, and the external structural dimensions of the transmission pipe are consistent with the internal structural dimensions of the fixing ring. The fixed ends on both sides of the fixing ring are installed above the feeding box through screws.
[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0016] In the present utility model, a first blade and a second blade are respectively provided on the driving shaft and the driven shaft. Multiple blades act simultaneously, and the first gear drives three second gears to rotate, causing the driven shaft to rotate, realizing multi-axis crushing. For calcium hydroxide materials with different shapes and hardnesses, multi-axis crushing can provide crushing force from multiple directions, comprehensively crushing various forms of materials, avoiding the deficiency of the crushing force in a single direction. For example, irregularly shaped calcium hydroxide blocks can be more fully crushed under the action of multiple blades, improving the crushing efficiency. Multi-axis crushing makes it difficult for materials to accumulate on one side during the crushing process. The rotation of multiple blades can disperse the materials more evenly, ensuring that the blades fully contact all materials, reducing the problem of the effective contact area between the blades and the materials being reduced due to material accumulation. In this way, there is no need to frequently stop the machine to clean up the accumulated materials, ensuring the stable progress of the production process. For example, during the crushing process, the materials can be more evenly distributed in the crushing area under the action of multiple axes, reducing the situation of local accumulation.
[0017] In the present utility model, the dust removal assembly composed of the second filter screen above the feeding box and the dust suction and blowing medium-pressure fan removes impurities such as dust in the calcium hydroxide material before crushing, avoiding the combination of dust and calcium hydroxide to form larger particle clusters, thus ensuring the uniformity of the product particle size distribution. In fields such as the coating industry where strict requirements are placed on particle size, uniform particle size can ensure stable coating performance and improve the coating quality. Through the dust removal operation, the mixing of impurities such as dust into the calcium hydroxide material is effectively reduced, improving the purity of the final product. Description of the Drawings
[0018] Figure 1 It is a front view structural schematic diagram of the present utility model;
[0019] Figure 2 It is a side view structural schematic diagram of the present utility model;
[0020] Figure 3 It is a structural schematic diagram of one side of the fixed cover of the present utility model;
[0021] Figure 4 It is a structural schematic diagram above the second support leg of the present utility model;
[0022] Figure 5 It is a structural schematic diagram of the interior of the barrel body of the present utility model.
[0023] In the figure: 1. Fixed cover; 101. First gear; 102. First servo motor; 103. Second gear; 2. Second support leg; 201. Third servo motor; 202. Dust storage box; 203. Screw conveyor shaft; 204. Fixed plate; 205. Dust suction and blowing medium pressure fan; 206. Transmission pipe; 207. Fixed ring; 208. Second filter screen; 209. Feeding box; 210. Stirring blade; 211. Rotating shaft; 212. Feeding port; 213. Second servo motor; 3. Barrel body; 301. First support leg; 302. First filter screen; 303. Active drive shaft; 304. First blade; 305. Driven drive shaft; 306. Discharge port; 307. Second blade. Specific embodiments
[0024] 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 belong to the scope of protection of the present invention.
[0025] Please refer to Figures 1 to 5 , the present invention provides a technical solution: a crushing device with a dust reduction function, including a fixed cover 1, one side of the fixed cover 1 is installed with a barrel body 3 through screws, and a second support leg 2 is arranged below the barrel body 3;
[0026] One side of the fixed cover 1 is attached to a first gear 101, a second gear 103 is meshed above the first gear 101, and the center of the first gear 101 is inserted into the output shaft of a first servo motor 102;
[0027] Above the second support leg 2, a feeding box 209 is installed through screws, a feeding port 212 is installed through screws above the feeding box 209, the outer shell of a third servo motor 201 is installed through screws on one side of the feeding port 212, a rotating shaft 211 is installed through bolts on one side of the output shaft of the third servo motor 201, stirring blades 210 are installed on the surface of the rotating shaft 211, the outer shell of a second servo motor 213 is installed through screws in front of the feeding box 209, a screw conveyor shaft 203 is installed through bolts on one side of the output shaft of the second servo motor 213, a fixed plate 204 is installed through screws on one side of the feeding box 209, a dust storage box 202 is installed through screws above the fixed plate 204, the outlet of a dust suction and blowing medium pressure fan 205 is installed through bolts behind the dust storage box 202, the inlet of the dust suction and blowing medium pressure fan 205 is installed through bolts on one side of a transmission pipe 206, a fixed ring 207 is inserted on the outer wall of the transmission pipe 206, and a second filter screen 208 is installed through screws above the feeding box 209;
[0028] An active drive shaft 303 is inserted at the inner center of the barrel body 3, a first blade 304 is inserted outside the active drive shaft 303, a driven drive shaft 305 is inserted at the inner side of the barrel body 3, a second blade 307 is inserted outside the driven drive shaft 305, a discharge port 306 is welded below the barrel body 3, a first support leg 301 is installed below the barrel body 3 by screws, and a first filter screen 302 is installed inside the barrel body 3.
[0029] In this embodiment, as Figure 3 and Figure 5 shown, the first gear 101 forms a rotating structure through the first servo motor 102, and the second gear 103 forms a rotating structure through the first gear 101; the first servo motor 102 provides a power source for the entire crushing process. It is connected to the first gear 101 and the active drive shaft 303 by bolts, driving the first gear 101 to rotate, thereby making the active drive shaft 303 form a rotating structure. The first servo motor 102 can adjust the rotation speed according to different crushing requirements, so as to control the speed and intensity of crushing. At the same time, by adjusting the number and distribution of the blades, it can adapt to the crushing of calcium hydroxide with different particle size requirements.
[0030] In this embodiment, as Figure 3 and Figure 5As shown, the active drive shaft 303 forms a rotating structure through the first servo motor 102. The active drive shaft 303 is bolted to the output shaft of the first servo motor 102. The first gear 101 is bolted to the output shaft of the first servo motor 102, and the first gear 101 forms a rotating structure through the first servo motor 102. The second gear 103 forms a rotating structure through the first gear 101. The driven drive shaft 305 forms a rotating structure through the second gear 103. A number of first blades 304 are evenly arranged horizontally on the surface of the active drive shaft 303, and a number of second blades 307 are evenly arranged horizontally on the surface of the driven drive shaft 305. The first gear 101 rotates driven by the first servo motor 102. Since the second gear 103 forms a rotating structure through the first gear 101 and there are three second gears 103 surrounding the first gear 101 in a ring, the rotation of the first gear 101 will drive the three second gears 103 to rotate simultaneously. The rotation of the second gear 103 makes the driven drive shaft 305 form a rotating structure, thus realizing the power transmission from the active drive shaft 303 to the driven drive shaft 305. A number of first blades 304 are evenly arranged horizontally on the surface of the active drive shaft 303. When the active drive shaft 303 rotates, the first blades 304 crush calcium hydroxide. A number of second blades 307 are evenly arranged horizontally on the surface of the driven drive shaft 305. The rotation of the driven drive shaft 305 drives the second blades 307 to crush calcium hydroxide. Multiple blades act simultaneously. The first blades 304 on the active drive shaft 303 and the second blades 307 on the driven drive shaft 305 jointly crush calcium hydroxide, improving the crushing efficiency. The first servo motor 102 provides strong power to ensure the rapid progress of the crushing process.
[0031] In this embodiment, as Figure 3 and Figure 5 shown, there are three second gears 103 surrounding the first gear 101 in a ring; for gear transmission, the power transmission is stable and reliable. The first gear 101 is bolted to the first servo motor 102 to ensure the accuracy of power transmission; the second gear 103 is driven by the first gear 101, and the three second gears 103 are distributed around the first gear 101 in a ring, making the transmission smoother and reducing equipment failures caused by uneven power. This design makes the entire crushing device structure compact and occupies less space. The first servo motor 102 is directly connected to the active drive shaft 303 and the first gear 101, reducing the intermediate transmission links and improving the integration of the equipment.
[0032] In this embodiment, as Figure 4As shown, the rotating shaft 211 forms a rotating structure through the third servo motor 201, and the stirring blades 210 form a rotating structure through the rotating shaft 211, and the stirring blades 210 are arranged horizontally and crosswise in an up-and-down manner; the stirring blades 210 are arranged horizontally and crosswise in an up-and-down manner. When calcium hydroxide enters from the feed inlet 212, the rotating stirring blades 210 can timely stir and guide the material, preventing the material from accumulating and blocking at the feed inlet 212. For example, even if relatively large lumps of calcium hydroxide enter the feed inlet 212, the stirring blades 210 can break them up by rotation and push them into the crushing area, avoiding blocking the feed inlet 212. The rotating shaft 211 forms a rotating structure through the third servo motor 201, providing stable and continuous power for the stirring blades 210, ensuring that the stirring blades 210 can quickly and effectively handle possible blockage situations. While preventing blockage of the feed inlet 212, the stirring blades 210 can also preliminarily stir and disperse the incoming calcium hydroxide, making the material enter the crushing area more evenly, which is beneficial to the subsequent crushing process and improves the overall crushing efficiency.
[0033] In this embodiment, as Figure 4 shown, the auger conveyor shaft 203 forms a rotating structure through the second servo motor 213; the auger conveyor shaft 203 forms a rotating structure through the second servo motor 213, providing power for the transportation of calcium hydroxide blocks. When the calcium hydroxide blocks fall from the feed inlet 212, the rotating auger conveyor shaft 203 can timely catch and convey them forward. For example, the calcium hydroxide blocks can be conveyed from one position to another specific crushing area, ensuring the continuous flow of the material.
[0034] In this embodiment, as Figure 4 shown, the internal structure dimensions above the feed box 209 are consistent with the external structure dimensions of the second filter screen 208, and the external structure dimensions of the transmission pipe 206 are consistent with the internal structure dimensions of the fixing ring 207. The two fixed ends of the fixing ring 207 are installed above the feed box 209 through screws; the second filter screen 208 can effectively prevent large lumps of calcium hydroxide from being sucked into the mouth of the transmission pipe 206, avoiding blockage of the transmission pipe 206 by large lumps of material or damage to the equipment. At the same time, the dust suction and blowing medium-pressure fan 205 performs dust suction operations during the transmission process, removing dust and fine particles before crushing, improving the purity of the material, providing higher-quality raw materials for the subsequent crushing link, ensuring the crushing effect and product quality. For example, removing dust can reduce the wear of the crushing equipment and extend the service life of the equipment; improving the material purity can make the final product more pure and meet higher quality requirements. The size designs of the feed box 209, the second filter screen 208, the transmission pipe 206, and the fixing ring 207 cooperate with each other, making the whole structure tightly connected, and the material is not easy to leak during the transmission process, ensuring the stability and reliability of the system.
[0035] Usage method and advantages of the present utility model: For the crushing device with dust reduction function, during use, the working process is as follows:
[0036] Such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 And Figure 5As shown in the figure, first, the material enters the feeding box 209 from the feeding port 212. At this time, the third servo motor 201 starts, driving the rotating shaft 211 to rotate. The stirring blades 210 on the rotating shaft 211 rotate to preliminarily stir and disperse the calcium hydroxide entering, preventing the material from accumulating and blocking at the feeding port 212. For example, even if relatively large lumps of calcium hydroxide enter the feeding port 212, the stirring blades 210 can break them up by rotation and push them into the feeding box 209. The second servo motor 213 starts, driving the auger conveying shaft 203 to rotate. When the calcium hydroxide lumps fall from the feeding port 212, the rotating auger conveying shaft 203 can catch them in time and convey them forward, and can convey the calcium hydroxide lumps from the feeding box 209 to the entrance of the transfer pipe 206. The internal structure size above the feeding box 209 is consistent with the external structure size of the second filter screen 208. The second filter screen 208 preliminarily filters the material, preventing large lumps of calcium hydroxide from being sucked into the mouth of the transfer pipe 206 and avoiding blockage of the transfer pipe 206 by large lumps of material or damage to the equipment. The dust suction and blowing medium-pressure fan 205 starts to perform dust suction operation on the transfer pipe 206. When the calcium hydroxide material is transported in the transfer pipe 206, the dust suction and blowing medium-pressure fan 205 (model: TB150-5) sucks away the dust and fine particles in the material, removing the dust and fine particles before crushing, improving the purity of the material, and providing higher-quality raw materials for the subsequent crushing link. For example, removing dust can reduce the wear of the crushing equipment, extend the service life of the equipment, and improving the material purity can make the final product more pure and meet higher quality requirements. The calcium hydroxide material after dust removal enters the barrel 3. The first servo motor 102 starts, driving the first gear 101 to rotate. Since the first gear 101 is bolted to the output shaft of the first servo motor 102, and the driving shaft 303 is bolted to the output shaft of the first servo motor 102, the driving shaft 303 also rotates accordingly. The rotation of the first gear 101 drives the rotation of three second gears 103 that are annularly arranged around it. The rotation of the second gears 103 makes the driven driving shaft 305 form a rotating structure. A number of first blades 304 are evenly arranged horizontally on the surface of the driving shaft 303, and a number of second blades 307 are evenly arranged horizontally on the surface of the driven driving shaft 305. Multiple blades act simultaneously. The first blades 304 on the driving shaft 303 and the second blades 307 on the driven driving shaft 305 jointly crush the calcium hydroxide. The first servo motor 102 can adjust the rotation speed according to different crushing requirements, thereby controlling the speed and intensity of crushing. At the same time, by adjusting the number and distribution of the blades, it can adapt to the crushing of calcium hydroxide with different particle size requirements. After being filtered by the first filter screen 302 inside the barrel 3, the crushed calcium hydroxide material is discharged from the discharge port 306.
[0037] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.
Claims
1. A crushing device with a dust reduction function, comprising a fixed cover (1), characterized in that: One side of the fixed cover (1) is installed with a barrel body (3) by screws, and a second support leg (2) is arranged below the barrel body (3). One side of the fixed cover (1) is attached with a first gear (101), a second gear (103) is meshed above the first gear (101), and the center of the first gear (101) is inserted into the output shaft of a first servo motor (102). Above the second support leg (2), a feeding box (209) is installed by screws. Above the feeding box (209), a feeding port (212) is installed by screws. On one side of the feeding port (212), the housing of a third servo motor (201) is installed by screws. On one side of the output shaft of the third servo motor (201), a rotating shaft (211) is installed by bolts. Stirring blades (210) are installed on the outer wall of the rotating shaft (211). In front of the feeding box (209), the housing of a second servo motor (213) is installed by screws. On one side of the output shaft of the second servo motor (213), an auger conveyor shaft (203) is installed by bolts. On one side of the feeding box (209), a fixing plate (204) is installed by screws. Above the fixing plate (204), a dust storage box (202) is installed by screws. At the rear of the dust storage box (202), the outlet of a dust suction and blowing medium-pressure fan (205) is installed by bolts. On one side of the inlet of the dust suction and blowing medium-pressure fan (205), a transmission pipe (206) is installed by bolts. A fixing ring (207) is inserted on the outer wall of the transmission pipe (206). Above the feeding box (209), a second filter screen (208) is installed by screws. In the center of the interior of the barrel body (3), a main drive shaft (303) is inserted. A first blade (304) is inserted outside the main drive shaft (303). On the side of the interior of the barrel body (3), a driven drive shaft (305) is inserted. A second blade (307) is inserted outside the driven drive shaft (305). At the bottom of the barrel body (3), a discharge port (306) is welded. At the bottom of the barrel body (3), a first support leg (301) is installed by screws. A first filter screen (302) is installed inside the barrel body (3).
2. The crushing device with a dust reduction function according to claim 1, wherein: The first gear (101) forms a rotating structure through the first servo motor (102), and the second gear (103) forms a rotating structure through the first gear (101).
3. The crushing device with a dust reduction function according to claim 1, characterized in that: The active drive shaft (303) forms a rotating structure through the first servo motor (102). The active drive shaft (303) is bolted to the output shaft of the first servo motor (102). The first gear (101) is bolted to the output shaft of the first servo motor (102), and the first gear (101) forms a rotating structure through the first servo motor (102). The second gear (103) forms a rotating structure through the first gear (101). The driven drive shaft (305) forms a rotating structure through the second gear (103). A number of first blades (304) are evenly arranged horizontally on the surface of the active drive shaft (303), and a number of second blades (307) are evenly arranged horizontally on the surface of the driven drive shaft (305).
4. The crushing device with a dust reduction function according to claim 1, characterized in that: Three second gears (103) are annularly arranged around the first gear (101) with the first gear (101) as the center.
5. The crushing device with a dust reduction function according to claim 1, characterized in that: The rotating shaft (211) forms a rotating structure through the third servo motor (201), and the stirring blades (210) form a rotating structure through the rotating shaft (211), and the stirring blades (210) are arranged horizontally and crosswise.
6. The crushing device with a dust reduction function according to claim 1, characterized in that: The auger conveyor shaft (203) forms a rotating structure through the second servo motor (213).
7. The crushing device with a dust reduction function according to claim 1, characterized in that: The internal structural dimensions of the upper part of the feeding box (209) are consistent with the external structural dimensions of the second filter screen (208), and the external structural dimensions of the transmission pipe (206) are consistent with the internal structural dimensions of the fixing ring (207). The two fixed ends of the fixing ring (207) are installed above the feeding box (209) by screws.