CN116408182A - Permanent magnet direct-drive center shaft transmission wet ball mill - Google Patents

Permanent magnet direct-drive center shaft transmission wet ball mill Download PDF

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Publication number
CN116408182A
CN116408182A CN202210004292.0A CN202210004292A CN116408182A CN 116408182 A CN116408182 A CN 116408182A CN 202210004292 A CN202210004292 A CN 202210004292A CN 116408182 A CN116408182 A CN 116408182A
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CN
China
Prior art keywords
channel
ball mill
water
water inlet
barrel
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Pending
Application number
CN202210004292.0A
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Chinese (zh)
Inventor
卢楚雄
黄家兴
胡靖�
周叶红
邓志刚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zigong Joint Mag Magnetic Materials Co ltd
Original Assignee
Zigong Joint Mag Magnetic Materials Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Zigong Joint Mag Magnetic Materials Co ltd filed Critical Zigong Joint Mag Magnetic Materials Co ltd
Priority to CN202210004292.0A priority Critical patent/CN116408182A/en
Publication of CN116408182A publication Critical patent/CN116408182A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00Disintegrating 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
    • B02C17/18Details
    • B02C17/1815Cooling or heating devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00Disintegrating 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
    • B02C17/18Details
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00Disintegrating 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
    • B02C17/18Details
    • B02C17/183Feeding or discharging devices
    • B02C17/1835Discharging devices combined with sorting or separating of material
    • B02C17/184Discharging devices combined with sorting or separating of material with separator arranged in discharge path of crushing zone
    • B02C17/1845Discharging devices combined with sorting or separating of material with separator arranged in discharge path of crushing zone with return of oversize material to crushing zone
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00Disintegrating 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
    • B02C17/18Details
    • B02C17/24Driving mechanisms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/04Safety devices

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

Abstract

A permanent magnet direct-driven center shaft transmission wet ball mill is characterized in that: the ball mill comprises a transmission assembly and a ball mill barrel, wherein a rotating shaft or a rotary joint is arranged at the front end and the rear end of the ball mill barrel, is connected with a bracket and is driven to rotate by the transmission assembly, the ball mill barrel comprises an inner barrel body and a cooling barrel body, the cooling barrel body is sleeved outside the inner barrel body, a space serving as a circulating water channel is arranged between the cooling barrel body and the inner barrel body, and the rotary joint is provided with a water inlet channel and a water outlet channel and is communicated with the circulating water channel; the side wall of the ball milling barrel is provided with a material throwing hole, a discharger is arranged in the material throwing hole, the discharger comprises a fixed frame, the bottom surface of the fixed frame is propped against the side wall of the ball milling barrel, the top end of the fixed frame is provided with a filter screen, and an access cover is arranged above the filter screen; the transmission assembly comprises a motor, a speed reducer and a coupler, wherein an output shaft of the motor is connected with an input shaft of the speed reducer through an eight-hole rubber pad coupler, and an output shaft of the speed reducer is connected with a rotating shaft of the ball milling cylinder through an elastic pin coupler.

Description

Permanent magnet direct-drive center shaft transmission wet ball mill
Technical Field
The invention relates to the field of grinding, in particular to a permanent magnet direct-drive center shaft transmission wet ball mill.
Background
The ball mill is a device for grinding and crushing, and the steel balls in the cylinder are driven to generate sliding friction and throwing collision through the rotation of the cylinder, so that collision, friction and shearing are generated between materials in the ball mill and the steel balls and between materials, and the purpose of crushing the materials is achieved.
The traditional ball mill generally adopts a three-phase asynchronous motor to drive a belt pulley of an input shaft of a speed reducer through a belt pulley, and drives a large gear ring on a ball mill cylinder body through a pinion connected with an output shaft of the speed reducer, so that the cylinder body rotates. The mechanism has two major problems, namely noise and vibration can be generated by meshing of large and small teeth, and the fault and maintenance amount is large. Secondly, the oil of the large and small tooth meshed lubrication gear is difficult to seal, and easily polluted ball milling slurry flows out along the outer wall of the cylinder body, so that great difficulty is caused to the process; and meanwhile, the falling ground causes pollution to the workshop ground, and a person steps on the ground to easily slip down, so that potential safety hazards are generated.
In addition, in the working process of the ball mill, a large amount of heat is generated due to friction, so that the ball mill cylinder is required to be cooled, the traditional mode is to spray cooling water directly on the ball mill cylinder for cooling, but the discharging mode of the ball mill is generally a material throwing mode, so that the cooling water is easy to mix with materials when the discharging mode is adopted, a large amount of scale is formed on the outer wall of the ball mill cylinder after a long time, the scale falls off during discharging, the problem is caused in material treatment, and meanwhile, the working environment is extremely poor due to long-time wetness caused by the spraying; and traditional ball mill adopts the motor to add the mode of belt and carries out the transmission, and this kind of transmission mode can lead to ball-milling barrel rotational speed unstable because of the belt slides, consequently can produce undulantly in same process time ground paste granularity, and the belt slides in addition and can produce a large amount of kinetic energy losses, leads to the electric energy loss serious, and the noise is very big, and the ejection of compact mode of ball mill leads to ejection of compact thick and thin mixing simultaneously, can't carry out effective scheduling problem of distinguishing.
Disclosure of Invention
In order to solve the problems, the invention provides the following scheme:
the permanent magnet direct-drive center shaft transmission wet ball mill comprises a transmission assembly and a ball milling cylinder body, wherein a rotating shaft or a rotary joint is arranged at the front end and the rear end of the ball milling cylinder body, is connected with a bracket and is driven to rotate by the transmission assembly, the ball milling cylinder body comprises an inner cylinder body and a cooling cylinder body, the cooling cylinder body is sleeved outside the inner cylinder body, a space serving as a circulating water channel is arranged between the cooling cylinder body and the inner cylinder body, and the rotary joint is provided with a water inlet channel and a water outlet channel and is communicated with the circulating water channel; the side wall of the ball milling barrel is provided with a material throwing hole, a discharger is arranged in the material throwing hole, the discharger comprises a fixed frame, the bottom surface of the fixed frame is propped against the side wall of the ball milling barrel, the top end of the fixed frame is provided with a filter screen, and an access cover is arranged above the filter screen; the transmission assembly comprises a motor, a speed reducer and a coupler, wherein an output shaft of the motor is connected with an input shaft of the speed reducer through an eight-hole rubber pad coupler, and an output shaft of the speed reducer is connected with a rotating shaft of the ball milling cylinder through an elastic pin coupler.
Further, rotary joint is binary channels rotary joint, and binary channels rotary joint sets up in ball-milling barrel and keeps away from motor one end, binary channels rotary joint includes rotary end and stiff end, set up inlet channel and water outlet channel in the rotary end, with the inlet end and the water outlet end intercommunication of circulating water course respectively, stiff end sets up water inlet and delivery port, water inlet and inlet tube intercommunication, delivery port and water outlet channel intercommunication.
Further, a water inlet rotary joint is arranged at the front end of the cylinder, the fixed end of the water inlet rotary joint is communicated with a water inlet pipeline, a water inlet channel is arranged in the rotary end of the water inlet rotary joint, the front end of the water inlet channel is communicated with the water inlet pipeline, and the rear end of the water inlet channel is communicated with the circulating water channel; the barrel rear end sets up out water swivel joint, goes out water swivel joint stiff end intercommunication play water piping, sets up the water channel in the water swivel joint swivel end, and the water channel front end communicates with the circulation water course, and the rear end communicates with the water channel.
Further, the circulating water channel is formed by a partition plate around the outer wall of the inner cylinder body in a spiral mode.
Further, the circulating water channel is divided into circulating water channels in a serpentine arrangement by a partition plate.
Further, a grid is arranged in the fixed frame.
Further, a slide way is arranged at the top end of the inner wall of the fixed frame, the side edge of the filter screen is clamped by a slide block, and the slide block slides along the slide way; the front end of the filter screen is provided with a hook, and the rear end of the filter screen is connected with a screen winding device; the front end of the fixed frame is provided with a clamping block, and the filter screen is pulled out of the screen winding device to cover the fixed frame, and then the hook is hung on the clamping block for fixing.
Further, the motor is a permanent magnet synchronous variable frequency motor; the speed reducer is a hard tooth surface speed reducer.
The beneficial effects of the invention are as follows:
1. the traditional external spray cooling is changed into the internal circulation cooling of the cylinder, so that the factory environment is effectively improved, the efficiency is improved, and the energy is saved.
2. The problems that the slurry continuously contacts cooling water and scale is removed from the outer wall of the cylinder body when the ball mill throws materials, so that the material throwing is difficult are avoided.
3. The side wall of the cylinder body is provided with a material throwing hole, and the material throwing hole is provided with a discharger, so that the traditional compressed air extrusion discharging mode is changed into material throwing, and the discharging quality and the discharging efficiency are improved; and is safer.
4. The discharger is provided with a filter screen and a grating, and the discharged material is filtered according to the requirement, so that the discharging quality is effectively improved.
5. The traditional transmission mode of adding the belt to the three-phase asynchronous motor is changed into the permanent magnet synchronous variable frequency motor which directly transmits through the center shaft of the ball mill, the transmission efficiency is improved by approximately 10%, the kinetic energy loss is reduced, the working noise is reduced to below 85 db, the field working environment is effectively improved, and the working efficiency of the ball mill is improved.
Drawings
FIG. 1 is a schematic structural diagram of embodiment 1;
FIG. 2 is a schematic view of a tap configuration;
FIG. 3 is a schematic view of the structure of a ball mill barrel in example 1;
FIG. 4 is a schematic diagram of a dual-channel rotary joint in embodiment 1;
fig. 5 is a schematic structural diagram of a single-channel rotary joint according to embodiment 2.
In the figure: 1. a permanent magnet synchronous variable frequency motor; 2. a hard tooth face reducer; 3. a coupling; 4. ball milling cylinder; 5. a bracket; 6. a discharging device; 7. a fixed frame; 8. a grille; 9. a filter screen; 10. an access cover; 11. a handle. 12. Cooling the cylinder; 13. an inner cylinder; 14. a partition plate; 15. a rotating end; 16. a fixed end; 17. a water outlet channel; 18. a water inlet channel; 19. a water inlet; 20. a water outlet; 21. a fixed end; 22. and a rotating end.
Detailed Description
The present invention will now be described in detail with reference to the accompanying drawings:
example 1: as shown in fig. 1-4, a permanent magnet direct-drive center shaft transmission wet ball mill comprises a transmission assembly and a ball milling barrel 4, wherein a rotating shaft or a rotating joint is arranged at the front end and the rear end of the ball milling barrel 4 and is connected with a bracket 5 and driven by the transmission assembly to rotate, the ball milling barrel 4 comprises an inner barrel 13 and a cooling barrel 12, the cooling barrel 12 is sleeved outside the inner barrel 13, a space serving as a circulating water channel is arranged between the cooling barrel 12 and the inner barrel 13, and the rotating joint is provided with a water inlet channel and a water outlet channel and is communicated with the circulating water channel; the side wall of the ball milling barrel 4 is provided with a material throwing hole, a discharger 6 is arranged in the material throwing hole, the discharger 6 comprises a fixed frame 7, the bottom surface of the fixed frame 7 is propped against the side wall of the ball milling barrel 4, the top end of the fixed frame 7 is provided with a filter screen 9, and an access cover 10 is arranged above the filter screen 9; the transmission assembly comprises a motor, a speed reducer and a coupler 3, wherein an output shaft of the motor is connected with an input shaft of the speed reducer through an eight-hole rubber pad coupler, and an output shaft of the speed reducer is connected with a rotating shaft of the ball milling cylinder through an elastic pin coupler.
Further, the rotary joint is a double-channel rotary joint, the double-channel rotary joint is arranged at one end of the cooling cylinder 12 far away from the motor, the double-channel rotary joint comprises a rotary end 15 and a fixed end 16, a water inlet channel 18 and a water outlet channel 17 are arranged in the rotary end 15 and are respectively communicated with the water inlet end and the water outlet end of the circulating water channel, a water inlet 19 and a water outlet 20 are arranged at the end head of the fixed end 16, the water inlet 19 is communicated with the water inlet pipe, and the water outlet 20 is communicated with the water outlet channel 17.
Further, the circulating water passage is divided into a serpentine arrangement of circulating water passages by the partition plates 14.
Further, a grille 8 is arranged in the fixed frame 7.
Further, a slide way is arranged at the top end of the inner wall of the fixed frame 7, the side edge of the filter screen 9 is clamped by a slide block, and the slide block slides along the slide way; the front end of the filter screen 9 is provided with a hook, and the rear end is connected with a screen coiling device; the front end of the fixed frame 7 is provided with a clamping block, and the filter screen 9 is pulled out of the net winding device to cover the fixed frame and then is hung on the clamping block by a hook for fixing.
Further, the motor is a permanent magnet synchronous variable frequency motor 1; the reducer is a hard tooth face reducer 2.
Further, the access cover 10 is provided with a handle 11.
In the embodiment 2, as shown in fig. 5, in the embodiment, a water inlet rotary joint and a water outlet rotary joint with the same structure are respectively arranged at the front end and the rear end of the cylinder, a fixed end '21 of the water inlet rotary joint is communicated with a water inlet pipeline, a water inlet channel is arranged in a rotary end' 22 of the water inlet rotary joint, the front end of the water inlet channel is communicated with the water inlet pipeline, and the rear end of the water inlet channel is communicated with a circulating water channel; the fixed end of the water outlet rotary joint is communicated with a water outlet pipeline, a water outlet channel is arranged in the rotary end of the water outlet rotary joint, the front end of the water outlet channel is communicated with the circulating water channel, and the rear end of the water outlet channel is communicated with the water outlet channel. The circulating water channel is formed by a baffle plate around the outer wall of the inner cylinder body. The rest of the structure is exactly the same as in example 1.
The invention changes the traditional external spray cooling into the circular cooling in the cylinder body, thereby effectively improving the factory environment, improving the efficiency and saving the energy; avoid the problem of difficult material throwing caused by continuous contact with cooling water when the ball mill throws material. The side wall of the cylinder body is provided with a material throwing hole, and the material throwing hole is provided with a discharger, so that the traditional discharging mode is changed into material throwing, and the discharging quality and the discharging efficiency are improved; the discharging device is provided with a filter screen and a grating, and the discharged material is filtered according to the requirement, so that the discharging quality is effectively improved; the traditional motor and belt transmission mode is changed into a permanent magnet synchronous variable frequency motor to transmit through the rotating shaft, so that the kinetic energy loss and the working noise are reduced, the working environment is improved, and the working efficiency is increased.

Claims (8)

1. A permanent magnet direct-driven center shaft transmission wet ball mill is characterized in that: the ball mill comprises a transmission assembly and a ball mill barrel, wherein a rotating shaft or a rotary joint is arranged at the front end and the rear end of the ball mill barrel, is connected with a bracket and is driven to rotate by the transmission assembly, the ball mill barrel comprises an inner barrel body and a cooling barrel body, the cooling barrel body is sleeved outside the inner barrel body, a space serving as a circulating water channel is arranged between the cooling barrel body and the inner barrel body, and the rotary joint is provided with a water inlet channel and a water outlet channel and is communicated with the circulating water channel; the side wall of the ball milling barrel is provided with a material throwing hole, a discharger is arranged in the material throwing hole, the discharger comprises a fixed frame, the bottom surface of the fixed frame is propped against the side wall of the ball milling barrel, the top end of the fixed frame is provided with a filter screen, and an access cover is arranged above the filter screen; the transmission assembly comprises a motor, a speed reducer and a coupler, wherein an output shaft of the motor is connected with an input shaft of the speed reducer through an eight-hole rubber pad coupler, and an output shaft of the speed reducer is connected with a rotating shaft of the ball milling cylinder through an elastic pin coupler.
2. A permanent magnet direct drive center shaft driven wet ball mill as defined in claim 1, wherein: the rotary joint is a double-channel rotary joint, the double-channel rotary joint is arranged at one end of the ball milling barrel away from the motor, the double-channel rotary joint comprises a rotary end and a fixed end, a water inlet channel and a water outlet channel are arranged in the rotary end and are respectively communicated with the water inlet end and the water outlet end of the circulating water channel, a water inlet and a water outlet are arranged at the end of the fixed end, the water inlet is communicated with the water inlet pipe, and the water outlet is communicated with the water outlet channel.
3. A permanent magnet direct drive center shaft driven wet ball mill as defined in claim 1, wherein: the front end of the cylinder body is provided with a water inlet rotary joint, the fixed end of the water inlet rotary joint is communicated with a water inlet pipeline, a water inlet channel is arranged in the rotary end of the water inlet rotary joint, the front end of the water inlet channel is communicated with the water inlet pipeline, and the rear end of the water inlet channel is communicated with a circulating water channel; the barrel rear end sets up out water swivel joint, goes out water swivel joint stiff end intercommunication play water piping, sets up the water channel in the water swivel joint swivel end, and the water channel front end communicates with the circulation water course, and the rear end communicates with the water channel.
4. A permanent magnet direct drive center shaft driven wet ball mill as defined in claim 1, wherein: the circulating water channel is formed by a baffle plate around the outer wall of the inner cylinder body.
5. A permanent magnet direct drive center shaft driven wet ball mill as defined in claim 1, wherein: the circulating water channel is divided into circulating water channels which are arranged in a serpentine manner by the partition plates.
6. A permanent magnet direct drive center shaft driven wet ball mill as defined in claim 1, wherein: and a grid is arranged in the fixed frame.
7. A permanent magnet direct drive center shaft driven wet ball mill as defined in claim 1, wherein: a slide way is arranged at the top end of the inner wall of the fixed frame, the side edge of the filter screen is clamped by a slide block, and the slide block slides along the slide way; the front end of the filter screen is provided with a hook, and the rear end of the filter screen is connected with a screen winding device; the front end of the fixed frame is provided with a clamping block, and the filter screen is pulled out of the screen winding device to cover the fixed frame, and then the hook is hung on the clamping block for fixing.
8. A permanent magnet direct drive center shaft driven wet ball mill as defined in claim 1, wherein: the motor is a permanent magnet synchronous variable frequency motor; the speed reducer is a hard tooth surface speed reducer.
CN202210004292.0A 2022-01-05 2022-01-05 Permanent magnet direct-drive center shaft transmission wet ball mill Pending CN116408182A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210004292.0A CN116408182A (en) 2022-01-05 2022-01-05 Permanent magnet direct-drive center shaft transmission wet ball mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210004292.0A CN116408182A (en) 2022-01-05 2022-01-05 Permanent magnet direct-drive center shaft transmission wet ball mill

Publications (1)

Publication Number Publication Date
CN116408182A true CN116408182A (en) 2023-07-11

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980068774U (en) * 1998-09-11 1998-12-05 정찬수 Chiller of water-cooled ball mill
CN102513191A (en) * 2011-11-23 2012-06-27 沈阳工业大学 Center drive direct-driven system of low-speed and large-torque permanent magnet motor of ball mill
CN203326739U (en) * 2013-07-04 2013-12-04 自贡市江阳磁材有限责任公司 Magnetic-shoe structure of DC micromotor
CN206567009U (en) * 2017-02-10 2017-10-20 沈阳寰博磁电科技有限公司 A kind of adaptive load grinding machine with permanent magnet direct-drive system
CN206838229U (en) * 2016-11-30 2018-01-05 成都茂源科技有限公司 A kind of electric excitation synchronous motor direct-drive type energy-saving ball mill
CN110479439A (en) * 2019-08-14 2019-11-22 德昌电机(南京)有限公司 A kind of ball mill auto feed priming apparatus
CN213611720U (en) * 2020-09-17 2021-07-06 株洲长江硬质合金设备有限公司 Water-cooled circulation wet grinder

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980068774U (en) * 1998-09-11 1998-12-05 정찬수 Chiller of water-cooled ball mill
CN102513191A (en) * 2011-11-23 2012-06-27 沈阳工业大学 Center drive direct-driven system of low-speed and large-torque permanent magnet motor of ball mill
CN203326739U (en) * 2013-07-04 2013-12-04 自贡市江阳磁材有限责任公司 Magnetic-shoe structure of DC micromotor
CN206838229U (en) * 2016-11-30 2018-01-05 成都茂源科技有限公司 A kind of electric excitation synchronous motor direct-drive type energy-saving ball mill
CN206567009U (en) * 2017-02-10 2017-10-20 沈阳寰博磁电科技有限公司 A kind of adaptive load grinding machine with permanent magnet direct-drive system
CN110479439A (en) * 2019-08-14 2019-11-22 德昌电机(南京)有限公司 A kind of ball mill auto feed priming apparatus
CN213611720U (en) * 2020-09-17 2021-07-06 株洲长江硬质合金设备有限公司 Water-cooled circulation wet grinder

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