CN111420761B - Ball mill - Google Patents

Ball mill Download PDF

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Publication number
CN111420761B
CN111420761B CN202010259944.6A CN202010259944A CN111420761B CN 111420761 B CN111420761 B CN 111420761B CN 202010259944 A CN202010259944 A CN 202010259944A CN 111420761 B CN111420761 B CN 111420761B
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CN
China
Prior art keywords
wall
barrel
sieve
extrusion
plate
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Active
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CN202010259944.6A
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Chinese (zh)
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CN111420761A (en
Inventor
张景龙
李翔
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Shandong Aohai Petroleum New Material Co.,Ltd.
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Shandong Aohai Petroleum New Material Co ltd
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Priority to CN202010259944.6A priority Critical patent/CN111420761B/en
Publication of CN111420761A publication Critical patent/CN111420761A/en
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Publication of CN111420761B publication Critical patent/CN111420761B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/04—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with unperforated container
    • B02C17/06—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with unperforated container with several compartments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/183—Feeding or discharging devices
    • B02C17/1835—Discharging devices combined with sorting or separating of material
    • B02C17/1855—Discharging devices combined with sorting or separating of material with separator defining termination of crushing zone, e.g. screen denying egress of oversize material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
    • B22F2009/043—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)

Abstract

The invention relates to a ball mill which comprises a workbench, a mounting rack and a ball milling device, wherein the mounting rack is mounted at the right end of the workbench, and the ball milling device is mounted between the mounting rack and the workbench; the ball-milling device comprises a rotating motor, a barrel, a steel ball, a screening mechanism and an auxiliary mechanism, wherein the rotating motor is installed at the upper end of a mounting frame through a motor base, the lower end of an output shaft of the rotating motor is connected with the upper end of the barrel, the lower end of the barrel is installed on a workbench through a bearing, and the screening mechanism is installed on the inner wall of the barrel. In the ball milling process, the screening mechanism and the auxiliary mechanism are matched with each other, so that the screening work of the metal powder prepared by grinding is completed, the metal powder with the diameter meeting the requirement can be directly discharged from the discharge hole without secondary grinding, the working time is saved, and the working load of equipment is lightened.

Description

Ball mill
Technical Field
The invention relates to the field of industrial equipment, in particular to a ball mill.
Background
The ball mill is the key equipment for crushing the materials after the materials are crushed. This type of mill is provided with a number of steel balls as grinding media in the barrel. It is widely used in the production industries of cement, silicate products, novel building materials, refractory materials, chemical fertilizers, black and non-ferrous metal ore dressing, glass ceramics and the like, and is used for dry or wet grinding of various ores and other grindable materials. The ball mill is suitable for grinding various ores and other materials, and is widely applied to the industries of mineral separation, building materials, chemical industry and the like.
The following problems currently exist in the process of preparing metal powder using a ball mill: in order to ensure that the size of the metal powder meets the design requirement, the metal powder needs to be subjected to multistage grinding and screening, and in the operation process, the powder with the size meeting the requirement and the powder with the position meeting the requirement are mixed together, so that the operation time is increased, and the grinding uniformity is influenced.
In order to solve the problems, the invention provides the ball mill which can classify and process the metal powder according to the diameter after the primary grinding work is finished, thereby saving the whole processing time, improving the working efficiency and improving the grinding uniformity to a certain extent.
Disclosure of Invention
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a ball mill comprises a workbench, a mounting rack and a ball milling device, wherein the mounting rack is mounted at the right end of the workbench, and the ball milling device is mounted between the mounting rack and the workbench; the ball milling device comprises a rotating motor, a barrel, steel balls, a screening mechanism and an auxiliary mechanism, wherein the rotating motor is mounted at the upper end of a mounting frame through a motor base, the lower end of an output shaft of the rotating motor is connected with the upper end of the barrel, the lower end of the barrel is mounted on a workbench through a bearing, the screening mechanism is mounted on the inner wall of the barrel, the steel balls are placed between the inner wall of the barrel and the screening mechanism, the auxiliary mechanism is mounted in the middle of the barrel, a feed inlet is formed in the upper end of the barrel, a discharge outlet is formed in the lower end of the barrel, mounting grooves are formed in the upper end of the left side and the lower end of the rear side of the barrel, and a guide groove is formed in the lower end of the mounting groove positioned at the upper end of the left side of the barrel; the barrel is driven to rotate by the rotating motor, materials in the barrel and the steel ball roll randomly in the barrel, the metal materials can be gradually ground into powder under the action of continuous impact and rolling, and the metallurgical powder raw materials with the diameters meeting the requirements are finally prepared under the matching action of the screening mechanism and the auxiliary mechanism.
The auxiliary mechanism comprises a fixed rod, a fixed screw, an extrusion rod and a reset spring, the lower end of the fixed rod is mounted at the lower end of the workbench through the fixed screw, the middle of the fixed rod penetrates through the lower end of the barrel, the upper end of the fixed rod is tightly attached to the inner wall of the upper end of the barrel, two groups of extrusion grooves are formed in the side wall of the fixed rod from top to bottom, the extrusion grooves in the same group are uniformly arranged along the circumferential direction of the fixed rod, the extrusion grooves are connected with the bottom end of the extrusion rod in a sliding fit mode, the bottom end of the extrusion rod is connected with the inner wall of the extrusion groove through the reset spring, and the top end of the extrusion rod is of a spherical structure; in the rotation process of the cylinder body, the fixed rod can rotate relative to the cylinder body, so that the extrusion rod can intermittently apply downward pressure to the pressed rod, and further the powder materials are driven to move in different directions on the lower sieve plate, the dispersion uniformity of the materials is improved, and the materials are conveniently subjected to grading treatment.
The screening mechanism comprises an upper screen plate, a pressure-bearing rod, a mounting ring, a partition plate, a lower screen plate, a bearing plate, a supporting spring, a material guide pipe and a second-stage screen plate, wherein the upper screen plate is arranged on the inner wall of a barrel body and is positioned right above a mounting groove formed in the upper end of the barrel body, the upper screen plate is of an annular structure, the pressure-bearing rod is uniformly arranged on the inner side of the upper screen plate along the circumferential direction of the upper screen plate in a sliding fit mode, the upper end of the pressure-bearing rod is clung to the lower end of an extrusion rod, the mounting ring is arranged in the mounting groove formed in the upper end of the barrel body, the outer wall of the mounting ring is connected with the outer wall of the barrel body through bolts, the partition plate and the lower screen plate are uniformly arranged on the inner wall of the mounting ring along the circumferential direction, the partition plate and the lower screen plate are arranged between the lower screen plate, the outer side of the lower screen plate is connected with the inner wall of the mounting ring through a hinge, the upper end of the inner side of the lower screen plate is clung to the lower end of the pressure-bearing plate, the screen hole diameter formed in the inner side of the lower screen plate is larger than the screen hole formed in the outer side of the lower screen plate, the lower end of the lower sieve plate is provided with a bearing plate, the bearing plate is installed on the inner wall of the cylinder body, the inner side of the lower sieve plate is connected with the bearing plate through a supporting spring, the outer side of the lower sieve plate is connected with the upper end of the material guide pipe, the lower end of the material guide pipe is butted with an opening at the upper end of the material guide groove, the material guide pipe is of a telescopic structure, a second-stage sieve plate is arranged below the bearing plate and placed in a mounting groove at the lower end of the rear side of the cylinder body, and the outer wall of the second-stage sieve plate is connected with the side wall of the cylinder body through bolts; the upper sieve plate and the lower sieve plate can filter and sieve the metal powder, when the pressed rod is pressed downwards by the extrusion rod, the inner side of the lower sieve plate is extruded downwards, so that the height of the inner side is lower than that of the outer side, the powder on the lower sieve plate can fall through the sieve pores on the inner side of the lower sieve plate, otherwise, when the pressed rod is not pressed by the extrusion rod, under the action of the elastic force of the supporting spring, the height of the lower sieve plate rises, the height of the inner side is higher than that of the outer side, at the moment, the powder on the lower sieve plate falls through the sieve pores on the outer side, and falls into the lower end of the cylinder body under the guiding action of the material guide pipes and the material guide grooves, so that part of the metal powder which reaches the required size can skip the secondary grinding operation and is directly discharged from a discharge hole arranged at the bottom end of the cylinder body, thereby saving the operation time, reducing the workload of the ball milling equipment, and the condition that the grinding uniformity is influenced because the powder with different diameters is mixed together is avoided.
Preferably, the through-hole has evenly been seted up along its circumference direction to barrel upper end lateral wall, the push rod is installed through screw-thread fit mode to the through-hole, when needs take the dead lever out from the barrel, at first adjust the dead lever position, make the extrusion stem can with the push rod one-to-one, later inwards bulldoze the push rod until the extrusion stem takes in the extrusion inslot completely, the extrusion stem no longer has the coincidence with last sieve plate this moment, consequently alright take the dead lever out downwards, when need not to take out the dead lever, with the push rod replacement for the bolt can, in order to avoid causing the hindrance because of push rod length overlength to the ball mill work.
Preferably, the diameter of the sieve pores formed in the second-stage sieve plate is smaller than the diameter of the sieve pores formed in the lower sieve plate and equal to the diameter of the sieve pores formed in the lower sieve plate.
Preferably, the fixing rod is of a vertically-telescopic structure, so that the fixing rod can be pulled out from the inside of the barrel without a large space, and the mounting ring can be mounted and dismounted conveniently.
Preferably, the bottom end of the inner wall of the cylinder body is of a slope structure with the height gradually decreasing from the middle to the outer side, so that the powder is discharged from the discharge hole.
Preferably, the barrel is divided into two parts equally around, is connected through the bolt between the two parts, conveniently overhauls barrel inner structure, and installs the metal sheet through the joint mode on the barrel inner wall, evenly is provided with ripple type sand grip on the metal sheet lateral wall to drive steel ball and metal raw materials and rotate at the barrel rotates the in-process.
The invention has the beneficial effects that:
1. according to the ball mill provided by the invention, in the ball milling process, the screening mechanism is matched with the auxiliary mechanism, so that the screening work of the metal powder prepared by grinding is completed, the metal powder with the diameter meeting the requirement can be directly discharged from the discharge hole without secondary grinding, the working time is saved, and the working load of equipment is lightened.
2. According to the auxiliary mechanism provided by the invention, in the rotating process of the cylinder body, the fixed rod can rotate relative to the cylinder body, so that the extrusion rod can intermittently apply downward pressure on the pressed rod, and further, powder materials are driven to move on the lower sieve plate in different directions, so that the dispersion uniformity of the materials is improved, and the materials are conveniently subjected to grading treatment.
3. The screening mechanism provided by the invention can enable a part of metal powder reaching the required size to skip the secondary grinding operation after primary grinding, and directly discharge the metal powder from the discharge hole formed in the bottom end of the cylinder, thereby saving the operation time, reducing the workload of ball milling equipment, and avoiding the occurrence of the condition that the grinding uniformity is influenced because the powder with different diameters is mixed together.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a front cross-sectional view of the present invention;
FIG. 2 is a top view of the present invention between the mounting ring, spacer plate and lower screen deck;
FIG. 3 is an enlarged view of the invention taken from the line A of FIG. 1;
fig. 4 is a partial enlarged view of the invention in the direction B of fig. 1.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 1 to 4, a ball mill comprises a workbench 1, a mounting rack 2 and a ball milling device 3, wherein the mounting rack 2 is mounted at the right end of the workbench, and the ball milling device 3 is mounted between the mounting rack 2 and the workbench 1; the ball milling device 3 comprises a rotating motor 31, a cylinder 32, steel balls 33, a screening mechanism 34 and an auxiliary mechanism 35, wherein the rotating motor 31 is installed at the upper end of the installation frame 2 through a motor base, the lower end of an output shaft of the rotating motor 31 is connected with the upper end of the cylinder 32, the lower end of the cylinder 32 is installed on a workbench through a bearing, the screening mechanism 34 is installed on the inner wall of the cylinder 32, the steel balls 33 are placed between the inner wall of the cylinder 32 and the screening mechanism 34, the auxiliary mechanism 35 is installed in the middle of the cylinder 32, a feeding hole is formed in the upper end of the cylinder 32, a discharging hole is formed in the lower end of the cylinder 32, installation grooves are formed in the upper end of the left side and the lower end of the rear side of the cylinder 32, and a guide groove is formed in the lower end of the installation groove positioned at the upper end of the left side of the cylinder 32; the rotary motor 31 drives the cylinder 32 to rotate, materials in the cylinder 32 and the steel ball 33 roll randomly in the cylinder 32, the metal materials can be gradually ground into powder under the continuous impact and rolling action, and the metallurgical powder raw materials with the diameters meeting the requirements are finally prepared through the matching action of the screening mechanism 34 and the auxiliary mechanism 35.
Barrel 32 inner wall bottom is for the inclined plane structure that the outside height of side reduces gradually from the centre to the powder is discharged from the discharge gate, and equally divide into two parts around the barrel 32, is connected through the bolt between the two parts, conveniently overhauls barrel 32 inner structure, and installs the metal sheet through the joint mode on the barrel 32 inner wall, evenly is provided with ripple type sand grip on the metal sheet lateral wall, rotates with metal raw materials in order to drive steel ball 33 at barrel 32 rotation in-process.
The through-hole has evenly been seted up along its circumferential direction to barrel 32 upper end lateral wall, the push rod 32a is installed through screw-thread fit to the through-hole, when needs take dead lever 351 out from barrel 32, at first adjust dead lever 351 position, make the extrusion stem 353 can with push rod 32a one-to-one, later will push rod 32a inwards bulldoze until extrusion stem 353 takes in the extrusion inslot completely, extrusion stem 353 no longer has the coincidence part with last sieve plate 341 this moment, consequently alright take dead lever 351 out downwards, when need not to take out dead lever 351, it can to push rod 32a replacement for the bolt, in order to avoid causing the hindrance because of push rod 32a length overlength to ball mill work.
The auxiliary mechanism 35 comprises a fixing rod 351, a fixing screw 352, an extrusion rod 353 and a return spring 354, the lower end of the fixing rod 351 is mounted at the lower end of the workbench through the fixing screw 352, the middle of the fixing rod 351 penetrates through the lower end of the barrel 32, the upper end of the fixing rod 351 is tightly attached to the inner wall of the upper end of the barrel 32, two groups of extrusion grooves are formed in the side wall of the fixing rod 351 from top to bottom, the extrusion grooves in the same group are uniformly arranged along the circumferential direction of the fixing rod 351, the extrusion grooves are connected with the bottom end of the extrusion rod 353 through a sliding fit mode, the bottom end of the extrusion rod 353 is connected with the inner wall of the extrusion groove through the return spring 354, and the top end of the extrusion rod 353 is of a spherical structure; in the rotation process of the cylinder 32, the fixing rod 351 can rotate relative to the cylinder 32, so that the extrusion rod 353 can intermittently apply downward pressure to the pressed rod 342, and further drive the powder materials to move in different directions on the lower sieve plate 345, thereby improving the dispersion uniformity of the materials and facilitating the classification treatment of the materials.
The screening mechanism 34 comprises an upper screen plate 341, a pressure receiving rod 342, an installation ring 343, a partition plate 344, a lower screen plate 345, a bearing plate 346, a support spring 347, a material guide pipe 348 and a secondary screen plate 349, wherein the upper screen plate 341 is installed on the inner wall of the cylinder 32, the upper screen plate 341 is positioned right above an installation groove formed at the upper end of the cylinder 32, the upper screen plate 341 is of an annular structure, the pressure receiving rods 342 are evenly installed on the inner side of the upper screen plate 341 along the circumferential direction thereof in a sliding fit manner, the upper ends of the pressure receiving rods 342 are closely attached to the lower ends of the pressure receiving rods 353, the installation ring 343 is placed in the installation groove at the upper end of the cylinder 32, the outer wall of the installation ring 343 is connected with the outer wall of the cylinder 32 through bolts, the partition plate 344 and the lower screen plate 345 are evenly installed on the inner wall of the installation ring 343 along the circumferential direction thereof, the partition plate 344 and the lower screen plate 345 are alternately arranged with the lower screen plate 345, the outer side of the lower screen plate 345 is connected with the inner wall of the installation ring 343 through a hinge, the upper end of the inner side of the lower screen plate 345 is closely attached to the lower ends of the pressure receiving rods 342, the diameter of a sieve pore formed in the inner side of the lower sieve plate 345 is larger than that of a sieve pore formed in the outer side of the lower sieve plate 345, a bearing plate 346 is arranged at the lower end of the lower sieve plate 345, the bearing plate 346 is installed on the inner wall of the cylinder 32, the inner side of the lower sieve plate 345 is connected with the bearing plate 346 through a supporting spring 347, the outer side of the lower sieve plate 345 is connected with the upper end of a material guide pipe 348, the lower end of the material guide pipe 348 is in butt joint with an opening at the upper end of the material guide groove, the material guide pipe 348 is of a telescopic structure, a secondary sieve plate 349 is arranged below the bearing plate 346, the secondary sieve plate 349 is placed in a mounting groove at the lower end of the rear side of the cylinder 32, the outer wall of the secondary sieve 349 is connected with the side wall of the cylinder 32 through bolts, and the diameter of the sieve pore formed in the secondary sieve 349 is smaller than that of the inner side of the lower sieve plate 345 and is equal to that of the sieve pore formed in the outer side of the lower sieve plate; the upper sieve plate 341 and the lower sieve plate 345 can both filter and sieve the metal powder, when the pressure rod 342 is pressed downwards by the pressing rod 353, the inner side of the lower sieve plate 345 is pressed downwards, so that the height of the inner side is lower than that of the outer side, the powder on the lower sieve plate 345 can fall through the sieve pores on the inner side of the lower sieve plate 345, otherwise, when the pressure rod 342 is not pressed by the pressing rod 353, the height of the lower sieve plate 345 rises under the elastic force of the supporting spring 347, and the height of the inner side is higher than that of the outer side, at this time, the powder on the lower sieve plate 345 falls through the sieve pores on the outer side and falls into the lower end of the cylinder 32 through the guiding action of the material guide pipe 348 and the material guide groove, so that a part of the metal powder reaching the required size can skip the secondary grinding operation and be directly discharged from the material outlet formed at the bottom end of the cylinder 32, thereby saving the operation time and lightening the work burden of the ball milling equipment, and the condition that the grinding uniformity is influenced because the powder with different diameters is mixed together is avoided.
The fixing rod 351 is of a vertically-retractable structure, and the fixing rod 351 can be drawn out from the inside of the cylinder 32 without a large space, so that the mounting ring 343 can be mounted and dismounted.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. The utility model provides a ball mill, includes workstation (1), mounting bracket (2) and ball-milling device (3), its characterized in that: the right end of the workbench is provided with a mounting rack (2), and a ball milling device (3) is arranged between the mounting rack (2) and the workbench (1); the ball milling device (3) comprises a rotating motor (31), a barrel body (32), steel balls (33), a screening mechanism (34) and an auxiliary mechanism (35), the rotating motor (31) is installed at the upper end of an installation frame (2) through a motor base, the lower end of an output shaft of the rotating motor (31) is connected with the upper end of the barrel body (32), the lower end of the barrel body (32) is installed on a workbench through a bearing, the screening mechanism (34) is installed on the inner wall of the barrel body (32), the steel balls (33) are placed between the inner wall of the barrel body (32) and the screening mechanism (34), the auxiliary mechanism (35) is installed in the middle of the barrel body (32), a feeding hole is formed in the upper end of the barrel body (32), a discharging hole is formed in the lower end of the barrel body (32), installation grooves are formed in the upper end of the left side and the lower end of the rear side of the barrel body (32), and a guide groove is formed in the lower end of the upper end of the left side of the barrel body (32);
the screening mechanism (34) comprises an upper screen plate (341), pressure receiving rods (342), a mounting ring (343), a partition plate (344), a lower screen plate (345), a bearing plate (346), a supporting spring (347), a material guide pipe (348) and a second-stage screen plate (349), wherein the upper screen plate (341) is mounted on the inner wall of the cylinder body (32), the upper screen plate (341) is positioned right above a mounting groove formed in the upper end of the cylinder body (32), the upper screen plate (341) is of an annular structure, the pressure receiving rods (342) are uniformly mounted on the inner side of the upper screen plate (341) in a sliding fit mode along the circumferential direction of the upper screen plate, the upper ends of the pressure receiving rods (342) are tightly attached to the lower ends of the extrusion rods (353), the mounting ring (343) is placed in the mounting groove formed in the upper end of the cylinder body (32), the outer wall of the mounting ring (343) is connected with the outer wall of the cylinder body (32) through bolts, the partition plate (344) and the lower screen plate (345) are uniformly mounted on the inner wall of the mounting ring (343) along the circumferential direction, the partition plates (344) and the lower sieve plates (345) are arranged at intervals, the outer sides of the lower sieve plates (345) are connected with the inner wall of the mounting ring (343) through hinges, the upper ends of the inner sides of the lower sieve plates (345) are tightly attached to the lower ends of the pressure rods (342), the diameters of sieve holes formed in the inner sides of the lower sieve plates (345) are larger than those of sieve holes formed in the outer sides of the lower sieve plates, the lower ends of the lower sieve plates (345) are provided with bearing plates (346), the bearing plates (346) are mounted on the inner wall of the cylinder body (32), the inner sides of the lower sieve plates (345) are connected with the bearing plates (346) through supporting springs (347), the outer sides of the lower sieve plates (345) are connected with the upper ends of guide pipes (348), the lower ends of the guide pipes (348) are in butt joint with openings in the upper ends of the guide grooves, the guide pipes (348) are of a telescopic structure, secondary sieve plates (349) are arranged below the bearing plates (346), and the secondary sieve plates (349) are placed in mounting grooves in the lower ends of the rear side of the cylinder body (32), the outer wall of the secondary sieve plate (349) is connected with the side wall of the cylinder (32) through bolts;
the auxiliary mechanism (35) comprises a fixing rod (351), a fixing screw (352), an extrusion rod (353) and a reset spring (354), the lower end of the fixing rod (351) is installed at the lower end of the workbench through the fixing screw (352), the lower end of the barrel body (32) is penetrated through the middle of the fixing rod (351), the upper end of the fixing rod (351) is tightly attached to the inner wall of the upper end of the barrel body (32), two groups of extrusion grooves are formed in the side wall of the fixing rod (351) from top to bottom, the extrusion grooves in the same group are evenly arranged along the circumferential direction of the fixing rod (351), the bottom end of the extrusion rod (353) is connected with the inner wall of the extrusion groove in a sliding fit mode, the bottom end of the extrusion rod (353) is connected with the inner wall of the extrusion groove through the reset spring (354), and the top end of the extrusion rod (353) is of a spherical structure.
2. A ball mill according to claim 1, wherein: through holes are uniformly formed in the side wall of the upper end of the cylinder body (32) along the circumferential direction of the cylinder body, and the through holes are provided with push rods (32a) in a thread matching mode.
3. A ball mill according to claim 1, wherein: the diameter of a sieve pore formed in the second-stage sieve plate (349) is smaller than that of a sieve pore formed in the inner side of the lower sieve plate and is equal to that of a sieve pore formed in the outer side of the lower sieve plate.
4. A ball mill according to claim 1, wherein: the fixing rod (351) is of a structure capable of being extended up and down.
5. A ball mill according to claim 1, wherein: the bottom end of the inner wall of the cylinder body (32) is of an inclined surface structure with the height gradually reduced from the middle to the outer side.
6. A ball mill according to claim 1, wherein: equally divide into two parts around barrel (32), be connected through the bolt between the two parts, and install the metal sheet through the joint mode on barrel (32) inner wall, evenly be provided with the ripple type sand grip on the metal sheet lateral wall.
CN202010259944.6A 2020-04-03 2020-04-03 Ball mill Active CN111420761B (en)

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Application Number Priority Date Filing Date Title
CN202010259944.6A CN111420761B (en) 2020-04-03 2020-04-03 Ball mill

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Application Number Priority Date Filing Date Title
CN202010259944.6A CN111420761B (en) 2020-04-03 2020-04-03 Ball mill

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CN111420761A CN111420761A (en) 2020-07-17
CN111420761B true CN111420761B (en) 2021-08-10

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