Ball mill discharge device and ball mill drum

Abstract

The invention discloses a ball mill discharging device, comprising a base, a screen plate and a raised strip. When the ball mill drum rolls, the screen plate and the raised strip will roll in a circle with the ball mill drum, 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, thereby reducing the frequency of the screen hole being blocked, reducing the frequency of equipment overhaul and maintenance, and improving 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 ball mill discharging device and a ball mill drum. Background Art

[0002] The ball mill is a commonly used material refining and grinding equipment. It is widely used in cement, ceramic raw materials, refractory materials and other production industries. 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; in addition, the pulp discharge sieve plate at the discharge end of the drum of the existing ball mill is a flat end, and the pulp discharge sieve plate is parallel to the end face of the ball mill. Raw materials are easily accumulated on the pulp discharge sieve plate. Due to insufficient stirring, a "blind area" is easily formed on the pulp discharge sieve plate. Raw materials accumulate on the sieve holes in the "blind area", forming scaling that cannot be "self-cleaned" by the rolling of the ball mill drum. As a result, the equipment needs to be shut down for frequent 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 discharging device.

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

[0005] According to one aspect of the present invention, a ball mill discharging device is provided, comprising a base, a screen plate, grinding balls and a raised strip; wherein the base is provided with a virtual central rotation axis, and when the base rotates, the base, the screen plate and the raised strip all rotate with the virtual central rotation axis as the central axis, the base comprises a mounting frame and an end cover body, the mounting frame is arranged on the end cover body, and a rubber layer is attached to the periphery of the end cover body; a plurality of screen holes are arranged on the screen plate; a discharging channel is provided on the base, the screen plate is arranged on the base, and the plurality of screen holes are connected to the discharging channel; the raised strip is convexly arranged on the feeding side of the screen plate, so that when the base rotates, the raised strip forms a sweeping track on the feeding side of the screen plate A plurality of the raised strips are combined to form at least one spacing space, and some or all of the plurality of sieve holes are distributed in the spacing space; part or all of the sieve plate is arranged to be convex toward the feed side, so that a feed surface inclined to the virtual center rotation axis is formed on the sieve plate, and when the base body rotates, the grinding ball is pushed upward by the raised strips, and then thrown to other raised strips, and the angle between the raised strips and the throwing trajectory of the grinding ball changes, and the raised strips rebound the grinding ball at a random angle, so that the grinding ball is ejected and thrown multiple times, and the grinding ball completes multiple sweeping movements without a fixed route along the side of the sieve plate in the spacing space.

[0006] When in use, the ball mill discharge device 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 drum of the ball mill. The transmission system drives the drum of the ball mill to roll, and at the same time, water flowing toward the ball mill discharge device is introduced into the drum of the ball mill (that is, flowing toward the discharge end of the drum of the ball mill). When the drum of the ball mill rotates, the drum of the ball mill drives the grinding balls to roll in the drum of the ball mill. When the grinding balls are brought to a certain height, they fall down due to the gravity of the grinding balls themselves. The gravitational potential energy is converted into dynamic potential energy. After falling, the grinding balls with dynamic 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 with the water flow, and then flow out of the ball mill drum through the discharge channel on the substrate. After long-term and multiple operations, part of the 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. Since the sieve plate is provided with a plurality of sieve holes in the present invention, and the raised strips are convexly arranged on the feeding side of the sieve plate, when the substrate rotates, the raised strips are on the feeding side of the sieve plate. A sweeping track is formed on the material side. When the ball mill drum rolls, the base, the screen plate and the raised strips will all roll in a circle with the ball mill drum with the virtual center axis as the central axis. The raised strips rotating along the sweeping track will drive 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, the grinding balls will perform a sweeping motion without a fixed route along the feed surface of the screen plate to knock off the accumulated scale on the screen holes, thereby reducing the frequency of blockage of the screen holes. In addition, since part or all of the screen plate is arranged to be convex toward the feed side, a feed surface inclined to the virtual center axis is formed on the screen plate. When the grinding balls fall, they will also roll and sweep along the feed surface inclined to the virtual center axis. Then, multiple screen holes arranged along the feed surface inclined to the virtual center axis will be swept by the grinding balls, thereby reducing or avoiding the generation of "blind screen holes" and reducing the frequency of screen hole blockage. In this way, the frequency of equipment overhaul and maintenance is reduced, and the production efficiency of the equipment is improved.

[0007] In some embodiments, a plurality of raised bars are provided, and the plurality of raised bars are all raised on the feed side of the sieve plate.

[0008] In this way, by providing a plurality of raised strips, the probability and frequency of the grinding balls being moved along the feed surface of the screen plate to perform a sweeping motion are further enhanced, thereby enhancing the ability to remove scale accumulated on the screen holes.

[0009] In some embodiments, a plurality of raised strips are combined to form at least one space, and some or all of the plurality of sieve holes are distributed in the space.

[0010] In this way, 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 most 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 throwing trajectory of the grinding balls is changing. 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 movements with no fixed route along the side of the screen plate in the interval space, increasing the sweeping movement frequency of the grinding balls, and thereby enhancing the ability to remove scale accumulated on the sieve holes in the interval space.

[0011] 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.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] In some embodiments, the base includes a mounting frame and an end cover body, wherein the mounting frame is disposed on the end cover body; wherein a plurality of discharge channels are disposed 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 are all connected to the raw material outlet hole.

[0016] In this way, the ground and refined raw materials flow out through a plurality of discharge channels respectively, and then are gathered into the raw material discharge hole of the end cover body and flow out together.

[0017] In some embodiments, the sieve plate includes a plurality of sub-screening blocks, the plurality of sub-screening blocks are arranged in a 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; the plurality of sub-screening blocks are arranged to extend obliquely toward the virtual center rotation axis, and the sub-screening blocks protrude toward the feed side of the sieve plate; the mounting frame includes a plurality of boxes, the plurality of boxes are arranged in a circular array, the boxes are provided with discharge channels, and the plurality of sub-screening blocks are arranged in a one-to-one correspondence on the plurality of boxes.

[0018] 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.

[0019] 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.

[0020] 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.

[0021] According to another aspect of the present invention, a ball mill drum is provided, comprising a ball mill discharge device, a drum body and a feed end structure; wherein the ball mill discharge device and the feed end structure are respectively arranged at two ends of the drum body.

[0022] During operation, raw materials and water are introduced into the ball mill drum through the feed end structure, the water flows to the ball mill discharge device, and the transmission system drives the ball mill drum to roll. Since the sieve plate of the ball mill discharge device of the present invention is provided with a plurality of sieve holes, 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, 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.

[0023] In some embodiments, a rubber lining is further included, and the rubber lining is disposed on the inner wall of the cylinder.

[0024] 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

[0025] Figure 1 A schematic structural diagram of a ball mill discharging device according to an embodiment of the present invention;

[0026] Figure 2 for Figure 1 Schematic diagram of the decomposed state structure;

[0027] Figure 3 for Figure 1 A front view of

[0028] Figure 4 for Figure 3 Section view along AA;

[0029] Figure 5 for Figure 4 The enlarged view of the part indicated by B;

[0030] Figure 6 for Figure 1 The schematic diagram of the structure of the sieve plate and the mounting frame in the ball mill discharging device is shown;

[0031] Figure 7 for Figure 6 A schematic diagram of a three-dimensional structure from another perspective;

[0032] Figure 8 for Figure 1 The schematic diagram of the structure of the ball mill discharge device being installed on the drum of the ball mill;

[0033] Fig. 9 for Figure 8 A front view of

[0034] Fig.10 for Fig. 9 Cross-sectional view along CC;

[0035] Fig.11 It is a structural schematic diagram of a ball mill discharging device according to another embodiment of the present invention;

[0036] Fig.12 This is a schematic structural diagram of a ball mill discharging device according to another embodiment of the present invention.

[0037] The meanings of the reference numerals are as follows:

[0038] 1. Base; 11. Discharge channel; 12. Mounting frame; 121. Box body; 122. Virtual center axis; 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 body; 411. Rubber lining; 42. Feed end structure; 5. Grinding balls; 6. Raw materials; 7. Spacing space; 8. Pressure ring. DETAILED DESCRIPTION

[0039] 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.

[0040] 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.

[0041] 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.

[0042] Embodiment 1

[0043] See also Figure 1-10The present invention provides a ball mill discharging device, which includes a base 1, a sieve plate 2 and a raised strip 3; wherein the base 1 is provided with a virtual central rotation axis 122, and when the base 1 rotates, the base 1, the sieve plate 2 and the raised strip 3 all rotate with the virtual central rotation axis as the central axis; a plurality of sieve holes 22 are provided on the sieve plate 2; a discharging channel 11 is provided on the base 1, and the sieve plate 2 is arranged on the base 1, and the plurality of sieve holes 22 are all connected to the discharging channel 11; the raised strip 3 is convexly arranged on the feeding side of the sieve plate 2, so that when the base 1 rotates, the raised strip 3 forms a sweeping track on the feeding side of the sieve plate 2; part or all of the sieve plate 2 is arranged to convex toward the feeding side, so that a feeding surface inclined to the virtual central rotation axis 122 is formed on 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 raw material, and the discharge surface refers to the side where the raw material flows out of the sieve plate 2. The feed side of the sieve plate 2 refers to the space range located on one side of the feed surface of the sieve plate 2. The raised strips 3 can be directly arranged on the feed surface of the sieve plate 2 to achieve that the raised strips 3 are raised on the feed side of the sieve plate 2, or in other embodiments, the raised strips 3 can also be arranged on the base 1 and raised to extend to the feed side of the sieve plate 2. In detail, as Figures 8 to 10As shown, in the present embodiment, a ball mill drum 4 is also provided, comprising a ball mill discharge device, a cylinder 41 and a feed end structure 42; wherein the ball mill discharge device 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 device, and the transmission system drives the ball mill drum 4 to roll. Since the sieve plate 2 of the ball mill discharge device 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 base 1, the sieve plate 2 and the raised strips 3 all rotate with the virtual central rotation axis 122 as the central axis. 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 down, the grinding balls 5 will be along the sieve plate 2. The feed surface of the grinding ball 5 is swept and brushed in a non-fixed route to knock off the accumulated scale on the sieve hole 22, thereby avoiding the clogging of the sieve hole 22; in addition, since part or all of the sieve plate 2 is set to bulge toward the feed side, so that a feed surface inclined to the virtual center axis 122 is formed on the sieve plate 2; then when the grinding ball 5 falls, it will also roll and sweep along the feed surface inclined to the virtual center axis 122, then the multiple sieve holes 22 arranged along the feed surface inclined to the virtual center axis 122 will be swept by the grinding ball 5, reducing or avoiding the generation of "blind sieve holes", and also avoiding the clogging of the sieve holes 22; in this way, the frequency of equipment maintenance and repair is reduced, and the production efficiency of the equipment is improved. Further, in this embodiment, the ball mill drum 4 also includes a rubber lining 411, which is arranged on the inner wall of the cylinder 41. In this way, by arranging the rubber lining 411 on the inner wall of the cylinder 41, the grinding ball 5 is prevented from impacting the inner wall of the cylinder 41 and causing wear.

[0044] When in use, the ball mill discharge device 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. The transmission system drives the ball mill drum 4 to roll, and at the same time, water flowing toward the ball mill discharge device 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 to a certain 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, in the present invention, the sieve plate 2 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, so that when the base 1 rotates, the raised strips 3 form a sweeping track on the feed side of the sieve plate 2, as shown in FIG. Figures 3 to 5 As shown, when the ball mill drum 4 rolls, the base 1, the screen plate 2 and the raised strips 3 will all roll in a circle with the ball mill drum 4 with the virtual central rotation axis 122 as the central axis. The raised strips 3 rotating along the sweeping trajectory will move some grinding balls 5 to be thrown upward along the side of the screen 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 along the feed surface of the screen plate 2 without a fixed route, so as to knock off the accumulated scale on the screen hole 22, thereby avoiding the blockage of the screen hole 22. In addition, since part of the screen plate 2 Or all of them are arranged to bulge toward the feed side, so that a feed surface inclined to the virtual center rotation axis 122 is formed on the screen plate 2; then when the grinding ball 5 falls, it will also roll and sweep along the feed surface inclined to the virtual center rotation axis 122, and then a plurality of screen holes 22 arranged along the feed surface inclined to the virtual center rotation axis 122 will be swept by the grinding ball 5, thereby reducing or avoiding the generation of "blind screen holes" and reducing the frequency of blockage of the screen holes 22; in this way, the frequency of equipment overhaul and maintenance is reduced, and the production efficiency of the equipment is improved.

[0045] 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.

[0046] like Figure 3 As 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.

[0047] like Figures 3 to 7As 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.

[0048] like Figures 6-7 As 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.

[0049] like Figures 6-7As shown, in the present 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 partition spaces 7. The sub-screening blocks 21 are located in the corresponding partition spaces 7, and the raised strips 3 separate two adjacent sub-screening blocks 21; the plurality of sub-screening blocks 21 are all arranged to extend obliquely toward the virtual center rotation axis, and the sub-screening blocks 21 protrude toward the feed side of the sieve plate 2. In other embodiments, some of the sub-screening blocks 21 may also be arranged to extend obliquely toward the virtual center rotation axis; the mounting frame 12 includes a plurality of boxes 121, and the plurality of boxes 121 are arranged in a circular array, and the boxes 121 are each provided with a discharge channel 11, and the plurality of sub-screening blocks 21 are respectively arranged in a one-to-one correspondence on the plurality of boxes 121. In this way, by setting the sieve plate 2 to include multiple sub-screening blocks 21, and the multiple sub-screening blocks 21 are set one-to-one corresponding to the multiple partition spaces 7, the sub-screening blocks 21 are located in the corresponding partition spaces 7; so that the sieve holes 22 located on different sub-screening blocks 21 are set in the corresponding partition 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 spliced ​​together by a plurality of fan-shaped sub-screening blocks 21, and sinkers are arranged on both sides of the sub-screening block 21. The sinkers of two adjacent sub-screening blocks 21 are spliced ​​together to form an installation sinker 211, and the raised strip 3 is installed on the installation sinker 211 by bolt locking, and the mounting frame 12 includes a plurality of boxes 121, and the plurality of boxes 121 are arranged in a circular array, and the boxes 121 are each provided with a discharge channel 11, and the plurality of sub-screening blocks 21 are respectively arranged on the plurality of boxes 121 in a one-to-one correspondence; 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 and the box 121 for maintenance and cleaning, without disassembling the entire sieve plate 2 and the mounting frame 12, which provides convenience for maintenance. It should be pointed out that, in the present embodiment, the mounting frame 12 comprises a plurality of boxes 121, which are arranged in a circular array, each of which is provided with a discharge channel 11, and the box 121 is hollow, and the two ends of the box 121 are interlinked, and the two ends and the hollow part of the box 121 together form the discharge channel 11, and the sub-screening block 21 is arranged on the feeding end of the box 121, and the sub-screening block 21 and the box 121 are combined into one by sheet metal / welding / riveting and other processes; the mounting frame 12 is locked and installed on the end cover body 13 by a clamping ring 8. In other embodiments, the raised strip 3 can also be directly arranged on the base 1, and the sub-screening block 21 on the sieve plate 2 is locked on the base 1 by screws.

[0050] 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.

[0051] Embodiment 2

[0052] like Fig.11As shown, the present invention provides another embodiment of a ball mill discharge device, which includes a base 1, a sieve plate 2 and a raised strip 3; wherein the base 1 is provided with a virtual center rotation axis, when the base 1 rotates, the base 1, the sieve plate 2 and the raised strip 3 all rotate with the virtual center rotation axis as the central axis; a plurality of sieve holes 22 are provided on the sieve plate 2; 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 convexly arranged 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; part or all of the sieve plate 2 is arranged to convex toward the feed side, so that a feed surface inclined to the virtual center rotation axis is formed on the sieve plate 2. A plurality of raised strips 3 are combined to form a plurality of partition spaces 7, and a plurality of sieve holes 22 are distributed in the plurality of partition spaces 7; in detail, two parallel raised strips 3 are perpendicularly crossed with another pair of two parallel raised strips 3 to form nine partition spaces 7.When in use, the ball mill discharge device is installed on the discharge end of the drum of the ball mill through the base 1, and then the raw materials and the grinding balls 5 are introduced into the drum of the ball mill. The transmission system drives the drum of the ball mill to roll, and at the same time, water flowing toward the ball mill discharge device is introduced into the drum of the ball mill (that is, flowing toward the discharge end of the drum of the ball mill). When the drum of the ball mill rotates, the drum of the ball mill drives the grinding balls 5 to roll in the drum of the ball mill. When the grinding balls 5 are brought to a certain height, they fall due to the gravity of the grinding balls 5 themselves, converting the gravitational potential energy into kinetic energy. The grinding balls 5 with dynamic potential energy after falling will crush and grind the raw materials, and the raw materials will 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 through the discharge channel 11 on the base 1; after long-term and multiple operations, part of the raw materials will form accumulation and scaling on the sieve holes 22. If the accumulation and scaling are not cleaned in time, the sieve holes 22 will be blocked. Since the sieve plate 2 is provided with a plurality of sieve holes 22 in the present invention, and the raised strips 3 are raised on the feeding side of the sieve plate 2, when the base 1 rotates, the raised strips 3 are formed on the feeding side of the sieve plate 2. The base 1, the screen plate 2 and the raised strips 3 are formed with a sweeping track. When the ball mill drum rolls, the base 1, the screen plate 2 and the raised strips 3 will all roll in a circle with the ball mill drum with the virtual central axis as the central axis. The raised strips 3 rotating along the sweeping track will move some grinding balls 5 to be thrown upward along the side of the screen 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 feeding surface of the screen plate 2, so as to knock off the accumulated scale on the screen hole 22, thereby reducing the frequency of blockage of the screen hole 22. In addition, due to the screen plate 2 Part or all of it is arranged to bulge toward the feed side, so that a feed surface inclined to the virtual center rotation axis is formed on the screen plate; then when the grinding ball 5 falls, it will also roll and sweep along the feed surface inclined to the virtual center rotation axis, and then the multiple screen holes 22 arranged along the feed surface inclined to the virtual center rotation axis will be swept by the grinding ball 5, reducing or avoiding the generation of "blind screen holes" and reducing the frequency of blockage of the screen holes 22; in this way, the frequency of equipment overhaul and maintenance is reduced, and the production efficiency of the equipment is improved. In addition, when the ball mill drum rolls, some grinding balls 5 will randomly enter the interval space 7, and the grinding balls 5 will be pushed and thrown upward by the raised strips 3. The grinding balls 5 will most likely be thrown to other raised strips 3. Since the ball mill drum is in a rotating state, the angle between the raised strips 3 and the throwing 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 thrown multiple times. Then, the grinding balls 5 will complete multiple sweeping movements with no fixed route in the interval space 7 along the side of the screen plate 2, which increases the sweeping movement frequency of the grinding balls 5, and thereby enhances the ability to remove scale accumulated on the sieve holes 22 in the interval space 7.In other embodiments, the specific structure of combining a plurality of raised strips 3 to form a plurality of spacing spaces 7 can also be appropriately adjusted according to actual conditions.

[0053] In this embodiment, among the nine partition spaces 7, the feed surface of the sieve plate 2 in the partition space 7 located in the center position protrudes toward the feed side to form a boss shape, and the feed surfaces of the sieve plates 2 located in the remaining eight partition spaces 7 are all inclined to the virtual center rotation axis, that is, "a part of the sieve plate 2 is set to protrude toward the feed side, so that a feed surface inclined to the virtual center rotation axis is formed on the sieve plate 2."

[0054] Embodiment 3

[0055] like Fig.12 As shown, the present invention provides a ball mill discharging device in another embodiment.

[0056] The difference between this embodiment and the second embodiment is that:

[0057] like Fig.12 As shown, in this embodiment, two raised strips 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 strips 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 strips 3. The grinding balls 5 are likely to be thrown to other raised strips 3. Since the ball mill drum 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 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 the scale accumulated on the sieve holes 22 located in the spacing space 7.

[0058] In this embodiment, the feed surface of the sieve plate 2 in the spacing space 7 located in the middle position protrudes toward the feed side, so the feed surfaces of the sieve plates 2 located on both sides of the spacing space 7 are inclined to the virtual center rotation axis, that is, "a part of the sieve plate 2 is arranged to protrude toward the feed side, so that a feed surface inclined to the virtual center rotation axis is formed on the sieve plate 2."

[0059] 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. Ball mill discharging device, characterized by: It comprises a base (1), a screen plate (2), grinding balls (5) and raised strips (3); The base (1) is provided with a virtual central rotation axis (122). When the base (1) rotates, the base (1), the screen plate (2) and the raised strip (3) all rotate with the virtual central rotation axis (122) as the central axis. 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). A rubber layer is attached to the periphery of the end cover body (13). The sieve plate (2) is provided with a plurality of sieve holes (22); the base body (1) is provided with a discharge channel (11), the sieve plate (2) is arranged on the base body (1), and the plurality of sieve holes (22) are all connected to the discharge channel (11); 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); a plurality of the raised strips (3) are combined to form at least one spacing space (7), and part or all of the plurality of sieve holes (22) are distributed in the spacing space (7); Part or all of the sieve plate (2) is arranged to protrude toward the feed side, so that a feed surface inclined to the virtual central rotation axis (122) is formed on the sieve plate (2). When the base (1) rotates, the grinding balls (5) are pushed upward by the raised strips (3) and then thrown toward other raised strips (3). The angle between the raised strips (3) and the throwing trajectory of the grinding balls (5) changes, and the raised strips (3) rebound the grinding balls (5) at random angles, so that the grinding balls (5) are ejected and thrown multiple times, and the grinding balls (5) complete multiple sweeping movements without fixed routes along the side of the sieve plate (2) in the spacing space (7).

2. The ball mill discharging device according to claim 1, characterized in that: A plurality of the raised strips (3) are provided, and the plurality of raised strips (3) are all raised and arranged on the feed side of the sieve plate (2).

3. The ball mill discharging device according to claim 2, 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 the plurality of sieve holes (22) are distributed in the plurality of spacing spaces (7).

4. The ball mill discharging device according to claim 3, 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).

5. The ball mill discharging device according to claim 4, characterized in that: A plurality of the 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 outlet ends of the plurality of outlet channels (11) are all connected to the raw material outlet hole (131).

6. The ball mill discharging device according to claim 5, characterized in that: The sieve plate (2) comprises a plurality of sub-screening blocks (21), the plurality of sub-screening blocks (21) are arranged in 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); the plurality of sub-screening blocks (21) are all arranged to extend obliquely toward the virtual central rotation axis (122); The mounting frame (12) comprises a plurality of boxes (121), the plurality of boxes (121) are arranged in a circular array, the box (121) is provided with the discharge channel (11), and the plurality of screening blocks (21) are respectively arranged on the plurality of boxes (121) in a one-to-one correspondence.

7. The ball mill discharging device according to any one of claims 1 to 5, characterized in that: The sieve hole (22) comprises an inlet (221) and an outlet (222), the outlet (222) is connected to the discharge channel (11), and the inlet (221) and the raised strip (3) are 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).

8. Ball mill drum, characterized in that It comprises the ball mill discharging device, the cylinder (41) and the feeding end structure (42) as described in any one of claims 1 to 7; Wherein, the ball mill discharge device and the feed end structure (42) are respectively arranged at two ends of the cylinder (41).

9. The ball mill drum according to claim 8, characterized in that: It also includes a rubber lining (411), which is arranged on the inner wall of the cylinder (41).

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