Ball mill discharge end structure and ball mill drum

Abstract

The invention discloses a discharge end structure of a ball mill, comprising a base, a screen plate and a raised strip. When the drum of the ball mill rolls, the screen plate and the raised strip will roll in a circle with the drum of the ball mill, and the raised strip will move some grinding balls to be thrown upward along the side of the screen plate, and then fall down. In the process of the grinding balls being thrown upward and falling down, the grinding balls will perform a sweeping motion along the feeding surface of the screen plate without a fixed route, so as to knock off the accumulated scale on the screen hole, reduce the frequency of the screen hole being blocked, reduce the frequency of equipment overhaul and maintenance, and improve the production efficiency of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of ball mills, and in particular to a discharge end structure of a ball mill. Background Art

[0002] The ball mill is a commonly used material refining and grinding equipment. It is widely used in the production industries of cement, ceramic raw materials, refractory materials, etc. Its basic working method is to load a certain amount of high-aluminum ball stone, medium-aluminum ball stone, pebbles or other hard materials into the drum of the ball mill as grinding bodies, and then add the raw materials that need to be ground and refined. The lining plate in the drum drives the grinding body to roll. When the grinding body is driven to a certain height, it falls due to its own gravity. The falling grinding body crushes and refines the raw materials in the drum, and then the refined raw materials flow out through the sieve holes on the sieve plate at the end of the drum. However, the sieve holes on the sieve plate in the drum of the existing ball mill are often blocked by raw materials, and even accumulation and scaling occur, which causes the equipment to be frequently shut down for inspection and maintenance, which reduces the production efficiency of the equipment. Summary of the invention

[0003] In order to overcome the defects of the prior art described above, the present invention provides a ball mill discharge end structure.

[0004] The technical solution adopted by the present invention to solve the problem is:

[0005] According to one aspect of the present invention, there is provided a ball mill discharge end structure, comprising a base, a sieve plate, grinding balls and raised strips, wherein more than two raised strips are provided, and the two or more raised strips are combined to form at least one spacing space; wherein a plurality of sieve holes are provided on the sieve plate, and part or all of the sieve holes are distributed in the spacing space; a discharge channel is provided on the base, the sieve plate is arranged on the base, and the plurality of sieve holes are connected to the discharge channel, and the base comprises a mounting frame and an end cover body, and the mounting frame is arranged on the end cover body; wherein a plurality of discharge channels are arranged on the mounting frame; the end cover body is provided with a raw material outlet hole, and the discharge ends of the plurality of discharge channels They are all connected with the raw material outlet hole, so that the ground and refined raw materials flow out through multiple outlet channels respectively, and then gather into the raw material outlet hole of the end cover body and flow out together; the raised bars are raised on the feed side of the sieve plate, so that when the base body rotates, the raised bars form a sweeping track on the feed side of the sieve plate, and some of the grinding balls randomly enter the interval space, and the grinding balls entering the interval space are pushed upward by the raised bars and thrown out by other raised bars, and some of the grinding balls are thrown upward along the side of the sieve plate and then fall down, and complete multiple sweeping movements without a fixed route in the interval space to remove the accumulated scale on the sieve holes.

[0006] When in use, the discharge end structure of the ball mill is installed on the discharge end of the drum of the ball mill through the base, and then the raw materials and grinding balls are introduced into the ball mill drum. The transmission system drives the ball mill drum to roll, and at the same time, water flowing toward the discharge end structure of the ball mill is introduced into the ball mill drum (that is, flowing toward the discharge end of the ball mill drum). When the ball mill drum rotates, the ball mill drum drives the grinding balls to roll in the ball mill drum. When the grinding balls are brought to a certain height, they fall due to the gravity of the grinding balls themselves, and the gravitational potential energy is converted into kinetic potential energy. After falling, the grinding balls with kinetic potential energy crush and grind the raw materials. The raw materials will flow out of the sieve holes along the feeding direction of the sieve holes along with the water flow, and then flow out of the ball mill drum through the discharge channel on the base. After long-term and multiple operations, some raw materials will form accumulation and scaling on the sieve holes. If the accumulation and scaling are not cleaned in time, the sieve holes will be blocked. Figure 3 As shown, since the sieve plate in the present invention is provided with a plurality of sieve holes, and the raised strips are convexly arranged on the feed side of the sieve plate, when the base body rotates, the raised strips form a sweeping track on the feed side of the sieve plate, and when the ball mill drum rolls, the base body and the sieve plate and the raised strips on the base body will roll in a circle with the ball mill drum, and the raised strips rotating along the sweeping track will move some grinding balls to be thrown upward along the side of the sieve plate, and then fall down, and in the process of the grinding balls being thrown upward and falling, the grinding balls will perform a sweeping motion without a fixed route along the feed surface of the sieve plate to knock off the accumulated scale on the sieve holes, thereby reducing the frequency of clogging of the sieve holes, reducing the frequency of equipment overhaul and maintenance, and improving the production efficiency of the equipment; by arranging a plurality of raised strips, the The probability and frequency of the grinding balls being moved to sweep and brush along the feed surface of the screen plate increase, thereby enhancing the ability to remove scale accumulated on the screen holes; when the ball mill drum rolls, some grinding balls randomly enter the interval space, and the grinding balls are pushed and thrown upward by the raised bars. The grinding balls are likely to be thrown to other raised bars. Since the ball mill drum is in a rotating state, the angle between the raised bars and the grinding ball throwing trajectory is changing, and other raised bars will bounce the grinding balls out at random angles, so that the grinding balls are ejected and thrown multiple times. Then the grinding balls will complete multiple sweeping and brushing movements without a fixed route in the interval space along the side of the screen plate, increasing the sweeping and brushing movement frequency of the grinding balls, thereby enhancing the ability to remove scale accumulated on the screen holes in the interval space.

[0007] In some embodiments, a plurality of raised bars are combined to form a plurality of spacing spaces, the plurality of raised bars are arranged in a circular array, a spacing space is formed between any two adjacent raised bars, and a plurality of sieve holes are distributed in the plurality of spacing spaces.

[0008] In this way, by arranging multiple raised bars in a circular array, and forming a spacing space between any two adjacent raised bars, the spacing space is clamped between two adjacent raised bars, that is, multiple raised bars are combined to form multiple spacing spaces. During the rolling stroke of a ball mill drum, the grinding balls have a greater probability of randomly entering the spacing space, and bounce and toss between two adjacent raised bars for multiple times, further enhancing the ability to remove scale accumulated on the sieve holes.

[0009] In some embodiments, a plurality of discharge channels are provided on the substrate, and the plurality of discharge channels are arranged in one-to-one correspondence with the plurality of interval spaces, and the discharge channels are connected to the sieve holes in the corresponding interval spaces.

[0010] In this way, by providing multiple discharge channels on the base body corresponding to the interval spaces one by one, the sieve holes in different interval spaces have separate discharge channels. Even if the discharge channel corresponding to the sieve holes in a certain interval space is blocked, it will not affect the normal operation of the sieve holes and discharge channels in other interval spaces.

[0011] In some embodiments, the sieve plate includes a plurality of sub-screening blocks, and the plurality of sub-screening blocks are arranged in one-to-one correspondence with the plurality of spacing spaces. The sub-screening blocks are located in the corresponding spacing spaces, and the raised bars separate two adjacent sub-screening blocks.

[0012] In this way, by setting the sieve plate to include multiple sub-screening blocks, and the multiple sub-screening blocks are set one-to-one corresponding to the multiple partition spaces, the sub-screening blocks are located in the corresponding partition spaces; so that the sieve holes located on different sub-screening blocks are set in the corresponding partition spaces.

[0013] In some embodiments, the sieve hole includes an inlet and an outlet, the outlet is connected to the discharge channel, and the inlet and the raised strip are located on the same side of the sieve plate; the caliber of the sieve hole is set to expand from the inlet to the outlet.

[0014] In this way, by setting the diameter of the sieve hole to expand from the inlet to the outlet, when large particles of raw materials are stuck in the sieve hole, the raw materials are loosened in the sieve hole through the sweeping and impact of the grinding balls. Then, the raw materials can flow more easily toward the outlet with a larger diameter and finally flow out from the outlet, making the sieve hole not easy to be blocked.

[0015] According to another aspect of the present invention, a ball mill drum is provided, comprising a ball mill discharge end structure, a cylinder body and a feed end structure; wherein the ball mill discharge end structure and the feed end structure are respectively arranged at two ends of the cylinder body.

[0016] During operation, raw materials and water are introduced into the ball mill drum through the feed end structure, and the water flows to the discharge end structure of the ball mill. The transmission system drives the ball mill drum to roll. Since a plurality of sieve holes are provided on the sieve plate of the discharge end structure of the ball mill of the present invention, and the raised strips are raised on the feed side of the sieve plate, when the base body rotates, the raised strips form a sweeping track on the feed side of the sieve plate. When the ball mill drum rolls, the sieve plate and the raised strips will roll in a circle with the ball mill drum, and the raised strips will drive some grinding balls to be thrown upward along the side of the sieve plate, and then fall down. In the process of the grinding balls being thrown upward and falling down, the grinding balls will perform a sweeping motion without a fixed route along the feed surface of the sieve plate to knock off the accumulated scale on the sieve holes, thereby reducing the frequency of sieve hole blockage, reducing the frequency of equipment overhaul and maintenance, and improving the production efficiency of the equipment.

[0017] In some embodiments, a rubber lining is further included, and the rubber lining is disposed on the inner wall of the cylinder.

[0018] In this way, by arranging the rubber lining on the inner wall of the cylinder, the wear caused by the impact of the grinding balls on the inner wall of the cylinder is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a ball mill discharge end structure according to an embodiment of the present invention;

[0020] Figure 2 for Figure 1 Schematic diagram of the decomposed state structure;

[0021] Figure 3 for Figure 1 A front view of

[0022] Figure 4 for Figure 3 Section view along AA;

[0023] Figure 5 for Figure 4 The enlarged view of the part indicated by B;

[0024] Figure 6 for Figure 4 Schematic diagram of the stereoscopic perspective structure;

[0025] Figure 7 for Figure 1 The schematic diagram of the structure of the screen plate and the mounting frame in the discharge end structure of the ball mill is shown;

[0026] Figure 8 for Figure 7 Schematic diagram of the decomposed state structure;

[0027] Fig. 9 for Figure 7 A schematic diagram of a three-dimensional structure from another perspective;

[0028] Fig.10 for Figure 1 The schematic diagram of the structure in which the discharge end structure of the ball mill is installed on the drum of the ball mill;

[0029] Fig.11 for Fig.10 A front view of

[0030] Fig.12 for Fig.11 Cross-sectional view along CC;

[0031] Fig.13 It is a structural schematic diagram of a ball mill discharge end structure according to another embodiment of the present invention;

[0032] Fig.14 This is a schematic structural diagram of a ball mill discharge end structure according to another embodiment of the present invention.

[0033] The meanings of the reference numerals are as follows:

[0034] 1. Base; 11. Discharge channel; 12. Mounting frame; 121. Crossbeam plate; 122. Sealing skin; 13. End cover body; 131. Raw material outlet hole; 2. Sieve plate; 21. Screening block; 211. Mounting sinker; 22. Sieve hole; 221. Inlet; 222. Outlet; 3. Raised strip; 4. Ball mill drum; 41. Cylinder; 411. Rubber lining; 42. Feed end structure; 5. Grinding balls; 6. Raw materials; 7. Spacing space; 8. Bolts. DETAILED DESCRIPTION

[0035] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0038] Embodiment 1

[0039] See also Figure 1-12 The present invention provides a ball mill discharge end structure, which includes a base body 1, a sieve plate 2 and a raised strip 3; wherein, the sieve plate 2 is provided with a plurality of sieve holes 22; a discharge channel 11 is provided on the base body 1, the sieve plate 2 is arranged on the base body 1, and the plurality of sieve holes 22 are connected to the discharge channel 11; the raised strip 3 is raised on the feed side of the sieve plate 2, so that when the base body 1 rotates, the raised strip 3 forms a sweeping track on the feed side of the sieve plate 2. The sieve plate 2 includes a feed surface and a discharge surface, the feed surface refers to the side of the sieve plate 2 facing the direction of the raw material, the discharge surface refers to the side of the raw material flowing out of the sieve plate 2, and the feed side of the sieve plate 2 refers to the spatial range located on one side of the feed surface of the sieve plate 2; the raised strip 3 can be directly arranged on the feed surface of the sieve plate 2 to realize that the raised strip 3 is raised on the feed side of the sieve plate 2, or in other embodiments, the raised strip 3 can also be arranged on the base body 1, and raised to extend to the feed side of the sieve plate 2. In detail, as Figures 10-12 As shown, in this embodiment, a ball mill drum 4 is also provided, including a ball mill discharge end structure, a cylinder 41 and a feed end structure 42; wherein the ball mill discharge end structure and the feed end structure 42 are respectively arranged at both ends of the cylinder 41. During operation, the raw material 6 and water are introduced into the ball mill drum 4 through the feed end structure 42, the water flows to the ball mill discharge end structure, and the transmission system drives the ball mill drum 4 to roll. Since the sieve plate 2 of the ball mill discharge end structure of the present invention is provided with a plurality of sieve holes 22, and the raised strips 3 are raised on the feed side of the sieve plate 2, when the base 1 rotates, the raised strips 3 form a sweeping track on the feed side of the sieve plate 2. When the ball mill drum 4 rolls, the sieve plate 2 and the raised strips 3 will roll in a circle with the ball mill drum 4, and the raised strips 3 will move some grinding balls 5 to be thrown upward along the side of the sieve plate 2, and then fall down. In the process of the grinding balls 5 being thrown upward and falling, the grinding balls 5 will perform a sweeping motion without a fixed route along the feed surface of the sieve plate 2 to knock off the accumulated scale on the sieve holes 22, thereby reducing the frequency of blockage of the sieve holes 22, reducing the frequency of equipment overhaul and maintenance, and improving the production efficiency of the equipment. Further, in this embodiment, the ball mill drum 4 further comprises a rubber lining 411, which is arranged on the inner wall of the cylinder 41. Thus, by arranging the rubber lining 411 on the inner wall of the cylinder 41, the grinding balls 5 are prevented from impacting the inner wall of the cylinder 41 and causing wear.

[0040] When in use, the discharge end structure of the ball mill is installed on the discharge end of the cylinder 41 of the ball mill drum 4 through the base 1, and then the raw material 6 and the grinding balls 5 are introduced into the ball mill drum 4, and the transmission system drives the ball mill drum 4 to roll, and at the same time, water flowing toward the discharge end structure of the ball mill is introduced into the ball mill drum 4 (that is, flowing toward the discharge end of the ball mill drum 4). When the ball mill drum 4 rotates, the ball mill drum 4 drives the grinding balls 5 to roll in the ball mill drum 4. When the grinding balls 5 are brought When the grinding balls 5 reach a certain height, they fall due to their own gravity, converting the gravitational potential energy into kinetic potential energy. After falling, the grinding balls 5 with kinetic potential energy crush and grind the raw materials 6. The raw materials 6 flow out of the sieve holes 22 along the feeding direction of the sieve holes 22 along with the water flow, and then flow out of the ball mill drum 4 through the discharge channel 11 on the base 1. After long-term and multiple operations, part of the raw materials 6 will form accumulation and scaling on the sieve holes 22. If the accumulation and scaling is not cleaned in time, the sieve holes 22 will be blocked. Figure 4 and Figure 5 As shown, since a plurality of sieve holes 22 are provided on the sieve plate 2 in the present invention, and the raised strips 3 are raised on the feed side of the sieve plate 2, when the base body 1 rotates, the raised strips 3 form a sweeping track on the feed side of the sieve plate 2, and when the ball mill drum 4 rolls, the base body 1 and the sieve plate 2 and the raised strips 3 on the base body 1 will roll in a circle with the ball mill drum 4, and the raised strips 3 rotating along the sweeping track will move some grinding balls 5 to be thrown upward along the side of the sieve plate 2, and then fall down, and in the process of the grinding balls 5 being thrown upward and falling, the grinding balls 5 will perform a sweeping motion without a fixed route along the feed surface of the sieve plate 2 to knock off the accumulated scale on the sieve holes 22, thereby reducing the frequency of blockage of the sieve holes 22, reducing the frequency of equipment overhaul and maintenance, and improving the production efficiency of the equipment.

[0041] In detail, in this embodiment, a plurality of raised strips 3 are provided, and the plurality of raised strips 3 are all provided on the feed side of the screen plate 2. Thus, by providing a plurality of raised strips 3, the probability and frequency of the grinding balls 5 being moved along the feed surface of the screen plate 2 to perform a sweeping motion are further enhanced, thereby enhancing the ability to remove scale accumulated on the screen holes 22.

[0042] like Figure 3As shown, further, in this embodiment, a plurality of raised strips 3 are combined to form at least one spacing space 7, that is, at least two raised strips 3 are arranged in a parallel or non-parallel manner to form the spacing space 7, and some or all of the plurality of sieve holes 22 are distributed in the spacing space 7. In this way, when the ball mill drum 4 rolls, some grinding balls 5 randomly enter the spacing space 7, and the grinding balls 5 are tossed upward by the raised strips 3. The grinding balls 5 are likely to be thrown to other raised strips 3. Since the ball mill drum 4 is in a rotating state, the angle between the raised strips 3 and the throwing trajectory of the grinding balls 5 is changing, and other raised strips 3 will bounce the grinding balls 5 out at random angles, so that the grinding balls 5 are ejected and thrown multiple times, then the grinding balls 5 will complete multiple sweeping movements without fixed routes along the side of the sieve plate 2 in the spacing space 7, increasing the sweeping movement frequency of the grinding balls 5, thereby enhancing the ability to remove scale accumulated on the sieve holes 22 located in the spacing space 7.

[0043] like Figures 3~9 As shown, specifically, in this embodiment, a plurality of raised bars 3 are combined to form a plurality of spacing spaces 7, a plurality of raised bars 3 are arranged in a circular array, a spacing space 7 is formed between any two adjacent raised bars 3, and a plurality of sieve holes 22 are distributed in the plurality of spacing spaces 7. In detail, a plurality of raised bars 3 are arranged in a circular array to form a radial wheel shape. In this way, by arranging a plurality of raised bars 3 in a circular array, and a spacing space 7 is formed between any two adjacent raised bars 3, and the spacing space 7 is clamped between two adjacent raised bars 3, it is realized that a plurality of raised bars 3 are combined to form a plurality of spacing spaces 7, and in the rolling stroke of a ball mill drum 4, the grinding balls 5 have a greater probability of randomly entering the spacing space 7, and bounce and throw between two adjacent raised bars 3 for many times, which further enhances the ability to remove the accumulated scale on the sieve holes 22.

[0044] like Figures 7-9As shown, further, in this embodiment, a plurality of discharge channels 11 are provided on the base 1, and the plurality of discharge channels 11 are arranged one-to-one corresponding to the plurality of compartments 7, and the discharge channels 11 are connected to the sieve holes 22 in the corresponding compartments 7. In this way, by providing a plurality of discharge channels 11 on the base 1 corresponding to the compartments 7, the sieve holes 22 in different compartments 7 have separate discharge channels 11, and even if the discharge channel 11 corresponding to the sieve holes 22 in a certain compartment 7 is blocked, it will not affect the normal operation of the sieve holes 22 and the discharge channels 11 in other compartments 7. In detail, in this embodiment, the specific structure of providing a plurality of discharge channels 11 on the base 1 is as follows: the base 1 includes a mounting frame 12 and an end cover body 13, and the mounting frame 12 is arranged on the end cover body 13; wherein, the plurality of discharge channels 11 are arranged on the mounting frame 12; the end cover body 13 is provided with a raw material outlet hole 131, and the discharge ends of the plurality of discharge channels 11 are all connected to the raw material outlet hole 131. The multiple discharge channels 11 are arranged in a circular array like the multiple raised strips 3, and the end cover body 13 is used to be assembled and connected with the cylinder body 41 of the ball mill drum 4. In this way, the ground and refined raw materials 6 flow out through the multiple discharge channels 11 respectively, and then gather to the raw material outlet hole 131 of the end cover body 13 and flow out together. In this embodiment, a rubber layer is also attached to the periphery of the end cover body 13 to prevent the grinding balls 5 from impacting the end cover body 13 and causing wear.

[0045] like Figures 7-9As shown, in this embodiment, the sieve plate 2 includes a plurality of sub-screening blocks 21, and the plurality of sub-screening blocks 21 are arranged in a one-to-one correspondence with the plurality of spacing spaces 7. The sub-screening blocks 21 are located in the corresponding spacing spaces 7, and the raised strips 3 separate two adjacent sub-screening blocks 21. In this way, by setting the sieve plate 2 to include a plurality of sub-screening blocks 21, and the plurality of sub-screening blocks 21 are arranged in a one-to-one correspondence with the plurality of spacing spaces 7, the sub-screening blocks 21 are located in the corresponding spacing spaces 7; so that the sieve holes 22 located on different sub-screening blocks 21 are arranged in the corresponding spacing spaces 7. In detail, in the present embodiment, the specific structure of the raised strip 3 raised on the feed side of the sieve plate 2 is as follows: the sieve plate 2 is composed of a plurality of fan-shaped sub-screening blocks 21, the sieve plate 2 is circular, and sinkers are provided on both sides of the sub-screening block 21, and the sinkers of two adjacent sub-screening blocks 21 are spliced ​​together to form an installation sinker 211, the raised strip 3 is pressed against the installation sinker 211, and a plurality of cross beams 121 for supporting the installation sinker 211 are provided on the mounting frame 12, and then the raised strip 3 is locked on the cross beam 121 of the mounting frame 12 by bolts 8, that is, the sieve plate 2 composed of a plurality of sub-screening blocks 21 is locked and installed on the mounting frame 12; when the sieve hole 22 on a certain sub-screening block 21 is blocked or the discharge channel 11 corresponding to the sub-screening block 21 is blocked, it is only necessary to remove the sub-screening block 21 for maintenance and cleaning, without disassembling the entire sieve plate 2, which provides convenience for maintenance. It should be noted that, in this embodiment, the mounting frame 12 includes a plurality of beam plates 121 and a sealing skin 122; the plurality of beam plates 121 are arranged in a circular row, and the sealing skin 122 tightly wraps the circumference of the plurality of beam plates 121, so that the space between two adjacent beam plates 121 and the sealing skin 122 are combined to form a discharge channel 11 with two ends intersecting. In other embodiments, the raised strip 3 can also be directly arranged on the base 1, and the sub-screening block 21 on the screen plate 2 is locked on the base 1 by screws.

[0046] like Figure 4 and Figure 5As shown, in this embodiment, the sieve hole 22 includes an inlet 221 and an outlet 222, the outlet 222 is connected to the discharge channel 11, the inlet 221 and the raised strip 3 are located on the same side of the sieve plate 2, that is, the raw material 6 flows in from the inlet 221; the caliber of the sieve hole 22 is set to expand from the inlet 221 to the outlet 222. In this embodiment, the specific shape of the sieve hole 22 is an inverted trapezoid, the end face of the trapezoid with a small area is the inlet 221, and the end face with a large area is the outlet 222. In other embodiments, the specific shape of the sieve hole 22 can also be other shapes such as an inverted truncated cone, that is, as long as it can achieve the expansion of the caliber of the sieve hole 22 from the inlet 221 to the outlet 222. In this way, by setting the caliber of the sieve hole 22 to expand from the inlet 221 to the outlet 222, when large particles of raw material 6 are stuck in the sieve hole 22, the raw material 6 is loosened in the sieve hole 22 through the sweeping and impact of the grinding ball 5, and can more easily flow toward the outlet 222 with a larger caliber, and finally flow out from the outlet 222, so that the sieve hole 22 has the characteristic of not being easy to be blocked.

[0047] Embodiment 2

[0048] like Fig.13As shown, the present invention provides another embodiment of a ball mill discharge end structure, which includes a base 1, a sieve plate 2 and a raised strip 3; wherein, the sieve plate 2 is provided with a plurality of sieve holes 22; a discharge channel 11 is provided on the base 1, the sieve plate 2 is arranged on the base 1, and the plurality of sieve holes 22 are all connected to the discharge channel 11; the raised strip 3 is raised on the feed side of the sieve plate 2, so that when the base 1 rotates, the raised strip 3 forms a sweeping track on the feed side of the sieve plate 2; a plurality of raised strips 3 are combined to form a plurality of spacing spaces 7, and a plurality of sieve holes 22 are distributed in the plurality of spacing spaces 7; in detail, two parallel raised strips 3 are perpendicularly crossed with another pair of two parallel raised strips 3 to form nine spacing spaces 7. When in use, the discharge end structure of the ball mill is installed on the discharge end of the cylinder of the ball mill drum through the base 1, and then the raw materials and grinding balls 5 are introduced into the ball mill drum, the transmission system drives the ball mill drum to roll, and at the same time, water flowing toward the discharge end structure of the ball mill is introduced into the ball mill drum (that is, flowing toward the discharge end of the ball mill drum). When the ball mill drum rotates, the ball mill drum drives the grinding balls 5 to roll in the ball mill drum. When the grinding balls 5 are brought to a certain height, they fall due to the gravity of the grinding balls 5 themselves, and the gravitational potential energy is converted into kinetic potential energy. After falling, the grinding balls 5 with kinetic potential energy crush and grind the raw materials. The raw materials will flow out of the sieve holes 22 along the feeding direction of the sieve holes 22 along the water flow, and then flow out of the ball mill drum through the discharge channel 11 on the base 1; after long-term and multiple operations, part of the raw materials will be on the sieve. Accumulated scale is formed on the hole 22. If the accumulated scale is not cleaned in time, the sieve hole 22 will be blocked. Since a plurality of sieve holes 22 are provided on the sieve plate 2 in the present invention, and the raised strips 3 are raised on the feed side of the sieve plate 2, when the base 1 rotates, the raised strips 3 form a sweeping track on the feed side of the sieve plate 2. When the ball mill drum rolls, the base 1 and the sieve plate 2 and the raised strips 3 on the base 1 will roll in a circle with the ball mill drum. The raised strips 3 rotating along the sweeping track will move some grinding balls 5 to be thrown upward along the side of the sieve plate 2 and then fall down. In the process of the grinding balls 5 being thrown upward and falling down, the grinding balls 5 will perform a sweeping motion without a fixed route along the feed surface of the sieve plate 2 to knock off the accumulated scale on the sieve holes 22, thereby reducing the frequency of blockage of the sieve holes 22, reducing the frequency of equipment overhaul and maintenance, and improving the production efficiency of the equipment.In addition, when the ball mill drum rolls, some grinding balls 5 will randomly enter the spacing space 7, and the grinding balls 5 will be tossed upward by the raised strips 3. The grinding balls 5 will most likely be tossed to other raised strips 3. Since the ball mill drum is in a rotating state, the angle between the raised strips 3 and the tossing trajectory of the grinding balls 5 is changing. Other raised strips 3 will bounce the grinding balls 5 out at random angles, so that the grinding balls 5 are ejected and tossed multiple times. Then, the grinding balls 5 will complete multiple sweeping movements without a fixed route in the spacing space 7 along the side of the sieve plate 2, increasing the sweeping movement frequency of the grinding balls 5, and further enhancing the ability to remove the accumulated scale on the sieve holes 22 in the spacing space 7. In other embodiments, the specific structure of combining multiple raised strips 3 to form multiple spacing spaces 7 can also be adjusted appropriately according to actual conditions.

[0049] Embodiment 3

[0050] like Fig.14 As shown, the present invention provides a ball mill discharge end structure in another embodiment.

[0051] The difference between this embodiment and the second embodiment is that:

[0052] like Fig.14 As shown, two raised bars 3 are combined to form a spacing space 7, part of the sieve holes 22 are distributed in the spacing space 7, and two raised bars 3 are arranged in parallel to form a spacing space 7. In this way, when the ball mill drum rolls, part of the grinding balls 5 randomly enter the spacing space 7, and the grinding balls 5 are tossed upward by the raised bars 3. The grinding balls 5 are likely to be thrown to other raised bars 3. Since the ball mill drum is in a rotating state, the angle between the raised bars 3 and the throwing trajectory of the grinding balls 5 is changing, and other raised bars 3 will bounce the grinding balls 5 out at random angles, so that the grinding balls 5 are ejected and thrown multiple times, then the grinding balls 5 will complete multiple sweeping movements without fixed routes in the spacing space 7 along the feed surface of the sieve plate 2, increasing the sweeping movement frequency of the grinding balls 5, and further enhancing the ability to remove scale accumulated on the sieve holes 22 located in the spacing space 7.

[0053] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. The ball mill discharge end structure is characterized by: It comprises a base (1), a screen plate (2), grinding balls (5) and raised strips (3), wherein at least two raised strips (3) are provided, and at least one spacing space (7) is formed by combining the two or more raised strips (3); The sieve plate (2) is provided with a plurality of sieve holes (22), and part or all of the sieve holes (22) are distributed in the interval space (7); The base (1) is provided with a discharge channel (11), the sieve plate (2) is arranged on the base (1), and the plurality of sieve holes (22) are all connected to the discharge channel (11), the base (1) comprises a mounting frame (12) and an end cover body (13), the mounting frame (12) is arranged on the end cover body (13), and a rubber layer is attached to the periphery of the end cover body (13); wherein the plurality of discharge channels (11) are arranged on the mounting frame (12); the end cover body (13) is provided with a raw material outlet hole (131), and the discharge ends of the plurality of discharge channels (11) are all connected to the raw material outlet hole (131); The raised strips (3) are raised on the feed side of the sieve plate (2), so that when the base (1) rotates, the raised strips (3) form a sweeping track on the feed side of the sieve plate (2), and some of the grinding balls (5) randomly enter the interval space (7). The grinding balls (5) entering the interval space (7) are pushed upward by the raised strips (3) and are pushed out by other raised strips (3). Some of the grinding balls (5) are thrown upward along the side of the sieve plate (2) and then fall down, and a plurality of sweeping movements without a fixed route are completed in the interval space (7) to remove the accumulated scale on the sieve hole (22).

2. The ball mill discharge end structure according to claim 1, characterized in that: A plurality of the raised strips (3) are combined to form a plurality of the spacing spaces (7); the plurality of the raised strips (3) are arranged in a circular array; a spacing space (7) is formed between any two adjacent raised strips (3); and a plurality of the sieve holes (22) are distributed in the plurality of spacing spaces (7).

3. The ball mill discharge end structure according to claim 2, characterized in that: The base body (1) is provided with a plurality of discharge channels (11), the plurality of discharge channels (11) are arranged in one-to-one correspondence with the plurality of separation spaces (7), and the discharge channels (11) are connected to the sieve holes (22) in the corresponding separation spaces (7).

4. The ball mill discharge end structure according to any one of claims 1 to 3, characterized in that: The sieve plate (2) comprises a plurality of sub-screening blocks (21), the plurality of sub-screening blocks (21) being arranged in one-to-one correspondence with the plurality of spacing spaces (7), the sub-screening blocks (21) being located in the corresponding spacing spaces (7), and the raised strips (3) being arranged to separate two adjacent sub-screening blocks (21).

5. The ball mill discharge end structure according to any one of claims 1 to 3, characterized in that: The sieve hole (22) comprises an inlet (221) and an outlet (222), the outlet (222) being connected to the discharge channel (11), and the inlet (221) and the raised strip (3) being located on the same side of the sieve plate (2); The caliber of the sieve hole (22) is configured to expand from the inlet (221) toward the outlet (222).

6. Ball mill drum, characterized in that: It comprises the ball mill discharge end structure, cylinder (41) and feed end structure (42) as described in any one of claims 1 to 5; The ball mill discharge end structure and the feed end structure (42) are respectively arranged at two ends of the cylinder (41).

7. The ball mill drum according to claim 6, characterized in that: It also includes a rubber lining (411), wherein the rubber lining (411) is arranged on the inner wall of the cylinder (41).

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