Ball mill with dust falling structure

Abstract

The utility model relates to the technical field of ore processing equipment, and discloses a ball mill with a dust fall structure, which comprises a ball mill body, a first dust removal mechanism is arranged at a discharge port of the ball mill body, and a second dust removal mechanism is arranged on the surface of the first dust removal mechanism; the first dust removal mechanism comprises a collection shell, a discharge port of the ball mill body penetrates into the collection shell, a cyclone separator is fixed to the right side of the top of the collection shell, the air inlet end of the cyclone separator communicates with an exhaust pipe, the exhaust pipe communicates with the top of the collection shell, and an exhaust port of the cyclone separator communicates with an air supply pipe; and one end of the air supply pipe communicates with a spraying dust removal box, a material discharging opening of the cyclone separator communicates with the right side of the top of the collecting shell, and an annular pipe is fixed to the top of the inner wall of the spraying dust removal box. According to the ball mill with the dust falling structure, efficient purification is achieved through multi-stage cooperative dust removal, and meanwhile production continuity is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of ore processing equipment, specifically a ball mill with a dust reduction structure. Background Technology

[0002] Ball mills are key equipment for further pulverizing materials after they have been crushed. This type of ball mill uses a certain number of steel balls as grinding media inside its cylinder, and the materials are pulverized by the impact of the steel balls. Currently, ball mills are prone to dust scattering when discharging material.

[0003] Utility model patent CN220177064U discloses a ball mill with a dust-reducing structure, including a base plate and a support plate, with the support plate symmetrically fixedly disposed on the upper part of the base plate; it also includes a ball milling mechanism, a discharge mechanism, a feed sealing mechanism, and a dust-reducing and cleaning mechanism. The ball milling mechanism is rotatably disposed in the middle of the support plate; the discharge mechanism is fixedly disposed in the middle of the support plate and located on the periphery of the ball milling mechanism; the feed sealing mechanism is disposed at the upper end of the ball milling mechanism; and the dust-reducing and cleaning mechanism is symmetrically disposed at one end of the ball milling mechanism. This utility model, through the cooperation of a dust-reducing pipe, a limiting block, a baffle, a filter plate, filter holes, a dust filter plate, a fan, and a second motor, not only reduces dust in the ball mill but also facilitates the cleaning of the dust-reducing pipe without affecting the operation of the ball mill.

[0004] However, the above-mentioned existing technical solutions still have the following shortcomings: the device uses a fan to adsorb dust onto the filter plate, but it has the following defects: 1. The high-speed airflow blows the ground slag directly onto the filter plate, causing the filter plate to clog quickly and requiring frequent shutdowns for cleaning; 2. The slag and dust mix and accumulate, making it difficult to separate and recycle; 3. The filter plate replacement is complicated, affecting production efficiency. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a ball mill with a dust reduction structure to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a ball mill with a dust removal structure, including a ball mill body, a first dust removal mechanism is provided at the discharge port of the ball mill body, and a second dust removal mechanism is provided on the surface of the first dust removal mechanism;

[0007] The first dust removal mechanism includes a collection shell. The discharge port of the ball mill body extends into the collection shell. A cyclone separator is fixed on the top right side of the collection shell. An exhaust pipe is connected to the air inlet of the cyclone separator. The exhaust pipe is connected to the top of the collection shell. An air supply pipe is connected to the exhaust port of the cyclone separator. One end of the air supply pipe is connected to a spray dust removal box. The material discharge port of the cyclone separator is connected to the top right side of the collection shell. An annular pipe is fixed to the top of the inner wall of the spray dust removal box. Multiple first atomizing nozzles are connected to the bottom of the annular pipe. A liquid injection pipe is connected to the top of the annular pipe. The liquid injection pipe extends through the spray dust removal box. A drain valve is connected to the bottom of the spray dust removal box.

[0008] Preferably, the second dust removal mechanism includes a dust removal shell, which is fixed to and communicates with the top of the spray dust removal box. An exhaust fan is connected to the top of the dust removal shell, and a replacement shell is connected to the right side of the dust removal shell. Two pull rods slide through the surface of the replacement shell, and a partition is provided between the two pull rods. The partition is fixedly connected to the inner wall of the replacement shell. An installation frame is fixed to the left end of the pull rod, and an installation groove is provided on the inner wall of the installation frame. A dust removal filter plate is slidably connected to the inner wall of the installation groove. A through groove for removing the dust removal filter plate is provided on the front surface of the installation frame. A pull plate is fixed to the right end of the pull rod, and a cleaning door for replacing the dust removal filter plate is hinged to the front surface of the replacement shell. The total number of dust removal filter plates is two.

[0009] Preferably, two guide rods are fixed to the surface of the pull plate, and one end of each guide rod is fixedly connected to the surface of the mounting frame.

[0010] Preferably, the surface of the annular tube is connected to an L-shaped diverter tube, the surface of the L-shaped diverter tube is connected to a plurality of second atomizing nozzles, a support plate is fixed to the bottom of the L-shaped diverter tube, and the surface of the support plate is fixedly connected to the lower part of the inner wall of the spray dust removal box.

[0011] Preferably, a drainage guide bucket is fixed at the bottom of the inner wall of the spray dust removal box, and the drainage guide bucket is connected to the top of the drain valve.

[0012] Preferably, the bottom of the exhaust pipe is connected to a dust suction guide bucket, and the surface of the dust suction guide bucket is fixedly connected to the inner wall of the collection shell.

[0013] Preferably, a guide plate is fixed to the right side of the inner wall of the collection shell. The guide plate has an inclined structure design with the right side higher than the left side. The guide plate is located on the right side of the discharge shell, and a vibration motor is fixed to the bottom of the collection shell.

[0014] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0015] First, the first dust removal mechanism collects dust-laden airflow generated during the ball mill's discharge process through a collection shell surrounding the mill's outlet. This airflow enters a cyclone separator via an exhaust pipe, where centrifugal force separates large particles of slag from the airflow. The separated slag is then returned to the collection shell through a material discharge port, preventing direct discharge and resource waste. The remaining dust-laden airflow enters a spray dust collection box via an exhaust pipe, with an injection pipe connecting to external water flow. The water flow is sprayed through multiple first atomizing nozzles on a ring pipe, causing the fine dust particles to settle due to increased weight from moisture. The wastewater after spraying is centrally treated through a drain valve and pre-separated by the cyclone separator to reduce the subsequent dust removal load. The spray dust collection box uses water mist to adsorb fine dust, reducing the risk of filter material clogging and simultaneously achieving graded recycling of dust and slag, improving resource utilization. The connection design between the collection shell and the cyclone separator allows for the recycling of incompletely separated materials, preventing secondary pollution.

[0016] Secondly, the second dust removal mechanism is located at the top of the spray dust collection box. The dust collection shell creates negative pressure through the exhaust fan, drawing in the humid airflow after spraying. When the airflow passes through the dust collection filter plates inside the dust collection shell, the residual fine dust is further intercepted. When the dust collection filter plates inside the dust collection shell become clogged, the mounting frame is pulled out into the replacement shell by pulling the lever. Then, the cleaning door is opened and the dust collection filter plate is taken out for quick replacement with a spare filter plate. Another dust collection filter plate located in the replacement shell can be pushed into the dust collection shell by pulling the plate, enabling continuous operation without stopping the machine. The dual filter plate alternating replacement design significantly reduces downtime maintenance time and improves production efficiency. The dust collection filter plates adopt a drawer-type mounting slot and a through slot combination to simplify the replacement process. The hinged design of the cleaning door facilitates quick inspection and maintenance by operators, reducing maintenance costs. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a partial cross-sectional structural diagram of the present invention;

[0019] Figure 3 This is a partial cross-sectional structural diagram of the first dust removal mechanism in this utility model;

[0020] Figure 4 This is a schematic cross-sectional view of the second dust removal mechanism after operation in this utility model.

[0021] The components include: 1. Ball mill body; 2. First dust removal mechanism; 201. Collection shell; 202. Cyclone separator; 203. Exhaust pipe; 204. Air supply pipe; 205. Spray dust removal box; 206. Discharge shell; 207. Annular pipe; 208. First atomizing nozzle; 209. Liquid injection pipe; 210. Liquid discharge valve; 211. Guide plate; 212. Vibration motor; 213. Dust suction guide hopper; 214. L-shaped diverter pipe; 215. Second atomizing nozzle; 216. Support plate; 217. Drainage guide hopper; 3. Second dust removal mechanism; 301. Dust removal shell; 302. Replacement shell; 303. Exhaust fan; 304. Pull rod; 305. Pull plate; 306. Mounting frame; 307. Mounting groove; 308. Dust removal filter plate; 309. Partition plate; 310. Guide rod; 4. Cleaning door. Detailed Implementation

[0022] The specific embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.

[0023] Please see Figure 1-4 A ball mill with a dust removal structure includes a ball mill body 1, a first dust removal mechanism 2 is provided at the discharge port of the ball mill body 1, and a second dust removal mechanism 3 is provided on the surface of the first dust removal mechanism 2.

[0024] The first dust removal mechanism 2 includes a collection shell 201. The discharge port of the ball mill body 1 extends into the collection shell 201. A cyclone separator 202 is fixed on the top right side of the collection shell 201. An exhaust pipe 203 is connected to the air inlet of the cyclone separator 202. The exhaust pipe 203 is connected to the top of the collection shell 201. An air supply pipe 204 is connected to the exhaust port of the cyclone separator 202. One end of the air supply pipe 204 is connected to a spray dust removal box 205. The material discharge port of the cyclone separator 202 is connected to the top right side of the collection shell 201. An annular pipe 207 is fixed to the top of the inner wall of the spray dust removal box 205. Multiple first atomizing nozzles 208 are connected to the bottom of the annular pipe 207. A liquid injection pipe 209 is connected to the top of the annular pipe 207. The liquid injection pipe 209 passes through the spray dust removal box 205. A drain valve 210 is connected to the bottom of the spray dust removal box 205.

[0025] Through the above technical solution, the first dust removal mechanism 2 encloses the discharge port of the ball mill body 1 through the collection shell 201. The dust-laden airflow generated during the ball mill discharge process enters the cyclone separator 202 through the exhaust pipe 203, using centrifugal force to separate large particles of slag from the airflow. The separated slag is returned to the collection shell 201 through the material discharge port, avoiding direct discharge and resource waste. The remaining dust-laden airflow enters the spray dust removal box 205 through the air supply pipe 204, and the liquid injection pipe 209 is connected to the external water flow. The water flow passes through the annular pipe 2 Multiple first atomizing nozzles 208 on 07 spray water mist, causing the fine dust particles to settle due to increased weight from the moisture. The wastewater after spraying is centrally treated through the drain valve 210 and pre-separated into large particles of slag by the cyclone separator 202 to reduce the subsequent dust removal load. The spray dust collection box 205 uses water mist to adsorb fine dust, reducing the risk of filter material clogging, while realizing the graded recycling of dust and slag, improving resource utilization. The connection design between the collection shell 201 and the cyclone separator 202 can recycle materials that are not completely separated, avoiding secondary pollution.

[0026] The second dust removal mechanism 3 includes a dust removal shell 301, which is fixed to and connected to the top of the spray dust removal box 205. An exhaust fan 303 is connected to the top of the dust removal shell 301. A replacement shell 302 is connected to the right side of the dust removal shell 301. Two pull rods 304 slide through the surface of the replacement shell 302. A partition 309 is provided between the two pull rods 304. The partition 309 is fixedly connected to the inner wall of the replacement shell 302. An installation frame 306 is fixed to the left end of the pull rod 304. An installation groove 307 is opened in the inner wall of the installation frame 306. A dust removal filter plate 308 is slidably connected to the inner wall of the installation groove 307. A through groove is opened on the front surface of the installation frame 306 to facilitate the removal of the dust removal filter plate 308. A pull plate 305 is fixed to the right end of the pull rod 304. A cleaning door 4 for replacing the dust removal filter plate 308 is hinged to the front surface of the replacement shell 302. There are a total of two dust removal filter plates 308.

[0027] Through the above technical solution, the second dust removal mechanism 3 is set at the top of the spray dust removal box 205. The dust removal shell 301 forms a negative pressure through the exhaust fan 303, which draws in the humid airflow after spraying. When the airflow passes through the dust removal filter plate 308 inside the dust removal shell 301, the residual fine dust is further intercepted. When the dust removal filter plate 308 inside the dust removal shell 301 is blocked, the mounting frame 306 is pulled out into the replacement shell 302 by pulling the lever 304. Then, the cleaning door 4 is opened and the dust removal filter plate 308 is taken out to quickly replace the spare filter plate. Another dust removal filter plate 308 located in the replacement shell 302 can be pushed into the dust removal shell 301 through the pull plate 305 to achieve continuous operation without stopping the machine. The dual filter plate alternating replacement design significantly reduces downtime maintenance time and improves production efficiency. The dust removal filter plate 308 adopts a drawer-type mounting groove 307 and a through groove to simplify the replacement process. The hinge design of the cleaning door 4 facilitates quick inspection and maintenance by operators and reduces maintenance costs.

[0028] Two guide rods 310 are fixed to the surface of the pull plate 305. One end of the guide rod 310 is fixedly connected to the surface of the mounting frame 306, and the guide rod 310 slides through the replacement shell 302.

[0029] Through the above technical solution, the guide rod 310 fixed on the surface of the pull plate 305 is connected to the mounting frame 306. When the pull rod 304 moves, the guide rod 310 provides linear guidance to ensure that the mounting frame 306 slides smoothly in the replacement shell 302 and avoids the filter plate from tilting or getting stuck.

[0030] An L-shaped diversion pipe 214 is connected to the surface of the annular pipe 207. Multiple second atomizing nozzles 215 are connected to the surface of the L-shaped diversion pipe 214. A support plate 216 is fixed to the bottom of the L-shaped diversion pipe 214. The surface of the support plate 216 is fixedly connected to the lower part of the inner wall of the spray dust removal box 205.

[0031] Through the above technical solution, the annular pipe 207 serves as the main distribution pipeline, delivering dust-suppressing liquid or water to the L-shaped diversion pipe 214. The curved structure of the L-shaped diversion pipe 214 changes the direction of the fluid and distributes it evenly to each of the second atomizing nozzles 215. The liquid is broken into water mist by the high-pressure atomization mechanism inside the nozzle. The water mist covers the transverse section of the airflow channel inside the spray dust removal box 205, and mixes fully with the dust-laden airflow to improve the atomization dust removal efficiency.

[0032] A drainage guide bucket 217 is fixed at the bottom of the inner wall of the spray dust removal box 205, and the drainage guide bucket 217 is connected to the top of the drain valve 210.

[0033] Through the above technical solution, the drainage guide bucket 217 at the bottom of the inner wall of the spray dust collector 205 concentrates the spray wastewater to the drain valve 210. The inclined bucket wall design accelerates the liquid discharge and prevents water accumulation at the bottom of the box.

[0034] The bottom of the exhaust pipe 203 is connected to a dust suction guide hopper 213, and the surface of the dust suction guide hopper 213 is fixedly connected to the inner wall of the collection shell 201.

[0035] Through the above technical solution, the dust collection guide hopper 213 at the bottom of the exhaust pipe 203 expands the dust collection range, and its funnel shape increases the airflow intake area, guiding the dust-laden airflow into the cyclone separator 202 efficiently.

[0036] A guide plate 211 is fixed on the right side of the inner wall of the collection shell 201. The guide plate 211 has an inclined structure design with the right side higher than the left side. The guide plate 211 is located on the right side of the discharge shell 206. A vibration motor 212 is fixed at the bottom of the collection shell 201.

[0037] Through the above technical solution, the inclined guide plate 211 on the right side of the inner wall of the collection shell 201 guides the separated slag to the discharge port, and the vibrating motor 212 periodically vibrates to accelerate the material flow and prevent slag from accumulating.

[0038] Working principle: The ball mill body 1 crushes and grinds the ore. The resulting dust-laden mixture enters the collection shell 201 of the first dust removal mechanism 2 from the discharge port. Under negative pressure, the exhaust pipe 203 draws the dust-laden airflow into the cyclone separator 202. The airflow enters the separator cylinder tangentially and rotates at high speed. Large slag particles are thrown against the wall under centrifugal force and slide down the conical cylinder, eventually returning to the bottom of the collection shell 201 through the material discharge port. The preliminarily purified airflow enters the spray dust removal box 205 from the top of the cyclone separator 202 through the air supply pipe 204. During the spraying stage, the liquid injection pipe 209 is connected to the external... Water or dust-suppressing liquid is supplied to the annular pipe 207, forming a fine water mist through the first atomizing nozzle 208. This fine water mist comes into full contact with the rising airflow, causing the dust particles to settle into the drainage guide hopper 217 due to their increased weight. The dust is then discharged and recycled through the drain valve 210. The humidified airflow, after being sprayed, continues to rise to the second dust removal mechanism 3. The negative pressure generated by the exhaust fan 303 draws the airflow into the dust removal housing 301. The airflow is filtered through the dust removal filter plate 308, where residual ultrafine dust is trapped by the filter material. The clean gas is then finally discharged. This multi-stage synergistic dust removal achieves efficient purification while ensuring continuous production.

[0039] Although specific embodiments of the present 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 specific embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ball mill with a dust-reducing structure, comprising a ball mill body (1), characterized in that: The ball mill body (1) is provided with a first dust removal mechanism (2) at the discharge port, and a second dust removal mechanism (3) is provided on the surface of the first dust removal mechanism (2); The first dust removal mechanism (2) includes a collection shell (201), the discharge port of the ball mill body (1) extends into the collection shell (201), a cyclone separator (202) is fixed on the top right side of the collection shell (201), the air inlet of the cyclone separator (202) is connected to an exhaust pipe (203), the exhaust pipe (203) is connected to the top of the collection shell (201), the exhaust port of the cyclone separator (202) is connected to an air supply pipe (204), and one end of the air supply pipe (204) is connected to a spray nozzle. The dust collection box (205) is connected to the top right side of the top of the cyclone separator (202). An annular pipe (207) is fixed on the top of the inner wall of the dust collection box (205). Multiple first atomizing nozzles (208) are connected to the bottom of the annular pipe (207). An injection pipe (209) is connected to the top of the annular pipe (207). The injection pipe (209) passes through the dust collection box (205). A drain valve (210) is connected to the bottom of the dust collection box (205).

2. A ball mill with a dust-reducing structure according to claim 1, characterized in that: The second dust removal mechanism (3) includes a dust removal shell (301), which is fixed to and communicates with the top of the spray dust removal box (205). A fan (303) is connected to the top of the dust removal shell (301), and a replacement shell (302) is connected to the right side of the dust removal shell (301). Two pull rods (304) slide through the surface of the replacement shell (302), and a partition (309) is provided between the two pull rods (304). The partition (309) is fixedly connected to the inner wall of the replacement shell (302). (304) A mounting frame (306) is fixed at the left end. The inner wall of the mounting frame (306) is provided with a mounting groove (307). A dust removal filter plate (308) is slidably connected to the inner wall of the mounting groove (307). A through groove for taking out the dust removal filter plate (308) is provided on the front surface of the mounting frame (306). A pull plate (305) is fixed at the right end of the pull rod (304). A cleaning door (4) for replacing the dust removal filter plate (308) is hinged to the front surface of the replacement shell (302). There are two dust removal filter plates (308) in total.

3. A ball mill with a dust-reducing structure according to claim 2, characterized in that: Two guide rods (310) are fixed to the surface of the pull plate (305), and one end of the guide rod (310) is fixedly connected to the surface of the mounting frame (306).

4. A ball mill with a dust-reducing structure according to claim 2, characterized in that: The surface of the annular tube (207) is connected to an L-shaped diversion tube (214), and the surface of the L-shaped diversion tube (214) is connected to a plurality of second atomizing nozzles (215). A support plate (216) is fixed at the bottom of the L-shaped diversion tube (214), and the surface of the support plate (216) is fixedly connected to the lower part of the inner wall of the spray dust removal box (205).

5. A ball mill with a dust-reducing structure according to claim 1, characterized in that: The bottom of the inner wall of the spray dust removal box (205) is fixed with a drainage guide bucket (217), which is connected to the top of the drain valve (210).

6. A ball mill with a dust-reducing structure according to claim 1, characterized in that: The bottom of the exhaust pipe (203) is connected to a dust suction guide hopper (213), and the surface of the dust suction guide hopper (213) is fixedly connected to the inner wall of the collection shell (201).

7. A ball mill with a dust-reducing structure according to claim 1, characterized in that: A guide plate (211) is fixed on the right side of the inner wall of the collection shell (201). The guide plate (211) has an inclined structure with the right side higher than the left side. The guide plate (211) is located on the right side of the discharge shell (206). A vibration motor (212) is fixed at the bottom of the collection shell (201).

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