Ball mill with dust falling structure

Abstract

The utility model discloses a ball mill with a dust falling structure, which relates to the technical field of ball mills and comprises a ball mill body, a first dust collecting cover is mounted at a feed port end of the ball mill body, and the feed port end of the ball mill body is rotatably connected with the first dust collecting cover through a first bearing. A fan is mounted above the first dust collecting cover, and a first pipeline is connected between the output end of the fan and the first dust collecting cover; the discharge port end of the ball mill body is fixedly connected with a screen plate through a bolt, and one end of the ball mill body is provided with a second dust collection cover. The ball mill body, the first dust collecting cover, the fan, the cyclone dust collector, the second dust collecting cover and the discharging chamber form a closed-loop dust falling structure, so that most of dust overflowing from the feeding port end of the ball mill body can be recycled, more loss in the material processing process is reduced, meanwhile, the complicated process of post-processing caused by water mist dust falling is avoided, and the production efficiency is improved. And the working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field, in particular to a ball mill with a dust reduction structure. Background Art

[0002] Ball mills are key equipment for pulverizing materials after crushing. They are widely used in industries such as cement, silicate products, new building materials, refractories, fertilizers, ferrous and non-ferrous metal beneficiation, and glass and ceramics, performing dry or wet grinding of various ores and other grindable materials. Ball mills are suitable for grinding a variety of ores and other materials, and are widely used in industries such as mineral processing, building materials, and chemicals. They can be divided into two types of grinding methods: dry and wet.

[0003] Existing dry ball mills generate a large amount of dust during operation. Therefore, some manufacturers install spray devices around the mill to suppress dust. However, during the dust suppression process, the suppressed powder mixes with the water, causing water pollution and making it difficult to recover the suppressed powder. Utility Model Content

[0004] The purpose of the utility model is to provide a ball mill with a dust reduction structure to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A ball mill with a dust reduction structure includes a ball mill body, a first dust collecting hood is installed at a feed inlet end of the ball mill body, the feed inlet end of the ball mill body and the first dust collecting hood are rotatably connected via a first bearing, a fan is installed above the first dust collecting hood, and a first pipe is connected between an output end of the fan and the first dust collecting hood;

[0007] The discharge port end of the ball mill body is fixedly connected with a screen plate by bolts, a second dust collecting cover is provided at one end of the ball mill body, the second dust collecting cover is a hollow annular structure, the discharge port of the ball mill body is located on the inner side of the second dust collecting cover, a cyclone dust collector is installed above the second dust collecting cover, the output end of the cyclone dust collector is connected to the second dust collecting cover, and the input end of the cyclone dust collector is connected to the output end of the fan through the cyclone dust collector;

[0008] A discharge chamber is provided below the second dust collecting hood, and the second dust collecting hood is connected to the discharge chamber through a discharge channel. A belt conveyor is installed on one side of the first dust collecting hood, and the output end of the belt conveyor is located on the inner side of the first dust collecting hood and extends to the feed port end of the ball mill body, so as to transport the block material into the ball mill body for crushing.

[0009] As a further solution of the present invention: a hole groove connected to the first pipe is opened on the top of the first dust collecting hood.

[0010] As a further solution of the present invention: the first pipeline is located directly above one end of the belt conveyor.

[0011] As a further solution of the present invention: a sealed silo is formed between the second dust collecting cover, the second bearing and the ball mill body, and the silo is an annular cavity structure.

[0012] As a further solution of the present invention: the second dust collecting hood is composed of two semicircular ring members with hollow interiors, and the two semicircular ring members are fixedly connected by bolts.

[0013] As a further solution of the present invention: the first bearing and the second bearing are both sealed deep groove ball bearings.

[0014] As a further solution of the present invention: a pull-out frame is installed at one end of the blanking chamber, and the pull-out frame is connected to the side wall of the blanking chamber in a pull-out sliding manner.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] A closed-loop dust reduction structure is formed by the ball mill body, the first dust collecting hood, the fan, the cyclone dust collector, the second dust collecting hood and the discharge chamber. This can recover most of the dust overflowing from the feed inlet of the ball mill body, reduce the loss during material processing, and also eliminate the complicated post-processing process caused by water mist dust reduction, thus greatly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a ball mill with a dust reduction structure;

[0018] Figure 2 A schematic structural diagram of a ball mill with a dust suppression structure from another perspective;

[0019] Figure 3 It is a schematic diagram of the partial cross-section structure of a ball mill with a dust reduction structure.

[0020] In the figure: 1. Ball mill body; 11. Screen plate; 2. First dust hood; 21. First bearing; 22. First pipeline; 3. Belt conveyor; 4. Fan; 5. Cyclone dust collector; 51. Second pipeline; 6. Second dust hood; 61. Second bearing; 62. Hopper; 63. Discharge channel; 7. Discharge chamber; 71. Pull-out frame. DETAILED DESCRIPTION

[0021] See also Figures 1 to 3 In an embodiment of the present invention, a ball mill with a dust reduction structure includes a ball mill body 1, a first dust collecting cover 2 is installed at the feed inlet end of the ball mill body 1, the feed inlet end of the ball mill body 1 and the first dust collecting cover 2 are rotatably connected via a first bearing 21, a fan 4 is installed above the first dust collecting cover 2, and a first pipe 22 is connected between the output end of the fan 4 and the first dust collecting cover 2;

[0022] The discharge port end of the ball mill body 1 is fixedly connected with a screen plate 11 by bolts. A second dust collecting cover 6 is provided at one end of the ball mill body 1. The second dust collecting cover 6 is a hollow annular structure. The discharge port of the ball mill body 1 is located on the inner side of the second dust collecting cover 6. A cyclone dust collector 5 is installed above the second dust collecting cover 6. The output end of the cyclone dust collector 5 is connected to the second dust collecting cover 6. The input end of the cyclone dust collector 5 is connected to the output end of the fan 4 through the cyclone dust collector 51.

[0023] A discharge chamber 7 is provided below the second dust collecting hood 6, and the second dust collecting hood 6 is connected to the discharge chamber 7 through a discharge channel 63. A belt conveyor 3 is installed on one side of the first dust collecting hood 2. The output end of the belt conveyor 3 is located on the inner side of the first dust collecting hood 2 and extends to the feed port end of the ball mill body 1, so as to transport the block material into the ball mill body 1 for crushing.

[0024] This type of ball mill forms a closed-loop dust reduction structure through the ball mill body 1, the first dust collecting hood 2, the fan 4, the cyclone dust collector 5, the second dust collecting hood 6 and the discharge chamber 7. It can recover most of the dust overflowing from the feed inlet end of the ball mill body 1, reduce the loss during the material processing process, and also eliminate the complicated process of subsequent processing caused by water mist dust reduction, thereby greatly improving work efficiency.

[0025] Specifically, the block material is first transported by the belt conveyor 3 to the feed port of the ball mill body 1 and enters the ball mill body 1. Some dust generated by the ball mill body 1 during operation will also float out of the feed port of the ball mill body 1. At this time, the fan 4 is used to suck the dust in the first dust collecting hood 2 and transport it to the cyclone dust collector 5. The dust removal principle of the cyclone dust collector 5 is used to gather most of the dust and transport it to the second dust collecting hood 6; at the same time, when the drum of the ball mill body 1 is rotating, the fine dust of the material is crushed and will pass through the screen plate 11 at the discharge port of the ball mill body 1 into the second dust collecting hood 6. The second dust collecting hood 6 finally enters the discharge chamber 7 through the discharge channel 63 for centralized collection.

[0026] It should be noted that the air outlet end of the cyclone dust collector 5 in this solution can be connected to the existing bag dust collector to prevent a small amount of dust from flying out of the air outlet end of the cyclone dust collector 5, further improving the workshop environment from dust pollution and providing protection for the health of the workers.

[0027] exist Figures 1 to 3 Middle: A hole groove connected to the first pipe 22 is opened on the top of the first dust collecting cover 2; the first pipe 22 is located directly above one end of the belt conveyor 3.

[0028] This structure is designed for bulk materials that also contain a small amount of dust. During the transportation process of the belt conveyor 3, the fan 4 directly above can be used to suck away a large amount of dust, thereby preventing a large amount of dust from adhering to the belt of the belt conveyor 3 and causing dust emission, thereby further improving the dust reduction effect.

[0029] exist Figures 1 to 3 Middle: A sealed silo 62 is formed between the second dust collecting hood 6, the second bearing 61 and the ball mill body 1, and the silo 62 is an annular cavity structure; the second dust collecting hood 6 is composed of two semicircular ring parts with hollow inner parts, and the two semicircular ring parts are fixedly connected by bolts; the first bearing 21 and the second bearing 61 are both sealed deep groove ball bearings.

[0030] When the drum of the ball mill body 1 rotates, a relative motion state is formed with the second dust collecting cover 6 through the second bearing 61, which can ensure that the second dust collecting cover 6 is in a stationary and fixed state. Then, the drum of the ball mill body 1 throws the dust into the hopper 62 through centrifugal force, and then the annular cavity structure of the hopper 62 can be used to collect the scattered dust in the discharge chamber 7 for centralized collection.

[0031] A seal is added between the two hollow semicircular rings to ensure that there is no gap where dust can overflow at the overall connection of the silo 62. The two semicircular rings are fixedly connected by bolts, which is convenient for maintenance and disassembly, greatly improving the convenience of subsequent maintenance work.

[0032] exist Figures 1 to 3 Middle: A pull-out frame 71 is installed at one end of the blanking chamber 7, and the pull-out frame 71 is connected to the side wall of the blanking chamber 7 in a pull-out sliding manner.

[0033] This structure is convenient for taking out the collected dust materials. When the pull-out frame 71 is fully inserted into the discharge chamber 7, a relatively sealed storage box can be formed. After the dust materials have been stationary for a period of time, the pull-out frame 71 is pulled out from the discharge chamber 7, which can effectively avoid the occurrence of dust overflow at the discharge point and further improve the dust reduction effect during discharge.

[0034] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A ball mill with a dust reduction structure, comprising a ball mill body (1), characterized in that: A first dust collecting hood (2) is installed at the feed inlet end of the ball mill body (1), and the feed inlet end of the ball mill body (1) and the first dust collecting hood (2) are rotatably connected via a first bearing (21). A fan (4) is installed above the first dust collecting hood (2), and a first pipe (22) is connected between the output end of the fan (4) and the first dust collecting hood (2); The discharge port end of the ball mill body (1) is fixedly connected to a screen plate (11) by bolts, and a second dust collecting cover (6) is provided at one end of the ball mill body (1), and the second dust collecting cover (6) is a hollow annular structure. The discharge port of the ball mill body (1) is located on the inner side of the second dust collecting cover (6), and a cyclone dust collector (5) is installed above the second dust collecting cover (6). The output end of the cyclone dust collector (5) is connected to the second dust collecting cover (6), and the input end of the cyclone dust collector (5) is connected to the output end of the fan (4) through a second pipe (51); A discharge chamber (7) is provided below the second dust collecting hood (6), and the second dust collecting hood (6) is connected to the discharge chamber (7) through a discharge channel (63). A belt conveyor (3) is installed on one side of the first dust collecting hood (2), and the output end of the belt conveyor (3) is located on the inner side of the first dust collecting hood (2) and extends to the feed port end of the ball mill body (1), so as to transport the block material into the ball mill body (1) for crushing.

2. The ball mill with a dust reduction structure according to claim 1, characterized in that: A hole groove communicating with the first pipe (22) is provided on the top of the first dust collecting cover (2).

3. The ball mill with a dust reduction structure according to claim 2, characterized in that: The first pipe (22) is located directly above one end of the belt conveyor (3).

4. The ball mill with a dust reduction structure according to claim 3, characterized in that: A sealed material bin (62) is formed between the second dust collecting cover (6), the second bearing (61) and the ball mill body (1), and the material bin (62) is an annular cavity structure.

5. The ball mill with a dust reduction structure according to claim 4, characterized in that: The second dust collecting hood (6) is composed of two semicircular ring members with hollow interiors, and the two semicircular ring members are fixedly connected by bolts.

6. The ball mill with a dust reduction structure according to claim 5, characterized in that: The first bearing (21) and the second bearing (61) are both sealed deep groove ball bearings.

7. The ball mill with a dust reduction structure according to claim 6, characterized in that: A pull-out frame (71) is installed at one end of the blanking chamber (7), and the pull-out frame (71) is connected to the side wall of the blanking chamber (7) in a pull-out sliding manner.

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