CN112495548B - Efficient raw materials grinder for bio-pharmaceuticals - Google Patents

Efficient raw materials grinder for bio-pharmaceuticals Download PDF

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Publication number
CN112495548B
CN112495548B CN202011258005.6A CN202011258005A CN112495548B CN 112495548 B CN112495548 B CN 112495548B CN 202011258005 A CN202011258005 A CN 202011258005A CN 112495548 B CN112495548 B CN 112495548B
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fixedly connected
plate
mortar body
raw materials
cavity
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CN112495548A (en
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王晓琳
王昆仑
李园媛
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Qilu Hospital of Shandong University
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Qilu Hospital of Shandong University
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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
    • B02C19/00Other disintegrating devices or methods
    • B02C19/08Pestle and mortar
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00Other disintegrating devices or methods
    • B02C19/16Mills provided with vibrators
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B06GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06BMETHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Crushing And Grinding (AREA)

Abstract

The invention relates to the technical field of biological pharmaceutical equipment, and discloses a high-efficiency raw material grinding device for biological pharmacy. This efficient raw materials grinder for bio-pharmaceuticals, pile up when the raw materials to the elastic induction rete outside, grind pestle extrusion raw materials, the elastic induction rete receives the extrusion deformation, promote the pneumatic bulldozing piece and outwards remove, first piezocrystal pressurized produces the electric current, make the electro-magnet circular telegram have magnetism, promote the magnet piece and outwards remove along the slip elongated slot, thereby make the positive plate correspond the switch-on with the negative plate, the circular telegram of second piezocrystal produces the vibration, it drives mortar body vibrations to drive the mutual contact of striking piece and vibrations piece, vibrations conduction board vibrations are shaken off the raw materials to the pressure-bearing atress bottom plate, make the raw materials receive the grinding once more, the efficiency of grinding and the granule degree of consistency after the grinding have been improved.

Description

Efficient raw materials grinder for bio-pharmaceuticals
Technical Field
The invention relates to the technical field of biological pharmaceutical equipment, in particular to a high-efficiency raw material grinding device for biological pharmacy.
Background
The biopharmaceutical raw material is mainly natural biological material, including microorganism, human body, animal, plant, marine organism, etc., the raw material is often processed by grinding in the biopharmaceutical process, grinding is an important processing method in ultra-precision processing, grinding utilizes abrasive particles coated or embedded on a grinding tool, and finishing processing is carried out on a processing surface by the relative motion of the grinding tool and a workpiece under certain pressure.
At present, the raw materials are generally ground by an electric grinder in the biopharmaceutical experimental process, but the raw materials are easily accumulated on the inner wall of a grinding material cavity in the grinding process of the electric grinder, and particularly, the situation of incomplete and uneven grinding is easily caused by grinding aiming at the small particle size, so that experimental data is influenced, and therefore, a high-efficiency raw material grinding device for biopharmaceuticals is provided to solve the problems.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a high-efficiency raw material grinding device for bio-pharmaceuticals, which has the effects of preventing materials from attaching to walls, improving the grinding efficiency and improving the uniformity of grinding particles, and solves the problem that the conventional electric grinding machine is easy to cause the situation that the raw materials are accumulated on the inner wall of a grinding material cavity in the grinding process, especially the grinding of small particle sizes is easy to cause incomplete and uneven grinding, thereby influencing experimental data.
(II) technical scheme
In order to realize the function of preventing materials from attaching to the wall, improve the grinding efficiency and improve the uniformity of grinding particles, the invention provides the following technical scheme: a high-efficiency raw material grinding device for bio-pharmaceuticals comprises a mortar body and a vibration conduction plate, wherein a grinding cavity is arranged in the mortar body, the bottom of the grinding cavity is fixedly connected with a pressure-bearing stress bottom plate, both sides of the pressure-bearing stress bottom plate are fixedly connected with flexible connection sections, an installation cavity is arranged in the mortar body, the interior of the installation cavity is movably connected with the vibration conduction plate, the inner wall of the grinding cavity is provided with an installation groove, the inner wall of the installation groove is fixedly connected with an elastic induction film layer, the interior of the mortar body is provided with a movable air passage, the inner wall of the movable air passage is movably connected with a pneumatic pushing block, the inner wall of the movable air passage is fixedly connected with a first piezoelectric crystal, the interior of the mortar body is fixedly connected with an electromagnet, the interior of the mortar body is provided with a sliding elongated slot, the inner wall of the sliding elongated slot is fixedly connected with a reset spring, the outer side of the reset spring is fixedly connected with a magnet block, and the interior of the magnet block is fixedly connected with a dielectric plate, the long groove that slides is inside to be filled with magnetorheological suspensions, the inside fixedly connected with positive plate of mortar body, the inside fixedly connected with of mortar body corresponds to the negative plate of positive plate, the vibrations cavity has been seted up to mortar body inside, the inside fixedly connected with current conducting plate of vibrations cavity, the inboard fixedly connected with elastic connection section of current conducting plate, elastic connection section bottom fixedly connected with second piezoelectric crystal, the equal fixedly connected with striking piece in second piezoelectric crystal both sides, vibrations cavity inner wall fixedly connected with vibrations piece, the inboard fixedly connected with conduction cavity of vibrations cavity.
Preferably, the pressure-bearing stress bottom plate and the mortar body are of an integrally formed structure, the metal reinforcing layer is fixedly connected inside the pressure-bearing stress bottom plate, the stress surface of the grinding pestle matched with the mortar body is mainly contacted with the pressure-bearing stress bottom plate, and the raw materials are arranged between the pressure-bearing stress bottom plate and the bottom of the grinding pestle for grinding treatment.
Preferably, vibrations conduction board bottom fixed connection to flexible connection section top, vibrations conduction inboard wall and pressure-bearing atress bottom plate top and the inboard smooth connection of flexible connection section are a whole, and the raw materials piles up to vibrations conduction board side department at the grinding in-process, and vibrations conduction board vibrations shake off the raw materials to pressure-bearing atress bottom plate on.
Preferably, the inboard fixed connection of activity air flue is in the mounting groove outside, and the inboard edge sealing connection outside and the elastic induction rete of activity air flue, when the raw materials piled up to the elastic induction rete outside, the grinding pestle extrudees the raw materials to make the corresponding deformation of elastic induction rete, extrude the gas in the activity air flue.
Preferably, the first piezoelectric crystal is electrically connected to a current amplifier, the current amplifier is electrically connected to an electromagnet, the current amplifier is fixedly connected inside the mortar body, the pneumatic pushing block moves outwards to extrude the first piezoelectric crystal, the first piezoelectric crystal is pressed to generate current so that the electromagnet is electrified to have magnetism, and the magnetism of the corresponding surface of the electromagnet and the magnetism of the corresponding surface of the magnet block are the same.
Preferably, an external electromagnetic field is fixedly connected to the outer side of the sliding long groove, the negative plate is electrically connected to the external electromagnetic field and the conductive plate, when the positive plate and the negative plate are communicated, the external electromagnetic field acts on the magnetorheological fluid to increase the viscosity of the magnetorheological fluid, and meanwhile, the conductive plate is electrified.
Preferably, the first piezoelectric crystal is made of quartz piezoelectric crystals, the second piezoelectric crystal is made of ceramic piezoelectric crystals, the quartz piezoelectric crystals are high in pressure sensitivity, and the ceramic piezoelectric crystals are obviously deformed when being electrified.
(III) advantageous effects
Compared with the prior art, the invention provides a high-efficiency raw material grinding device for bio-pharmaceuticals, which has the following beneficial effects:
1. this efficient raw materials grinder for bio-pharmaceuticals, pile up when the raw materials to the elastic induction rete outside, grind pestle extrusion raw materials, the elastic induction rete receives the extrusion deformation, promote the pneumatic bulldozing piece and outwards remove, first piezocrystal pressurized produces the electric current, make the electro-magnet circular telegram have magnetism, promote the magnet piece and outwards remove along the slip elongated slot, thereby make the positive plate correspond the switch-on with the negative plate, the circular telegram of second piezocrystal produces the vibration, it drives mortar body vibrations to drive the mutual contact of striking piece and vibrations piece, vibrations conduction board vibrations are shaken off the raw materials to the pressure-bearing atress bottom plate, make the raw materials receive the grinding once more, the efficiency of grinding and the granule degree of consistency after the grinding have been improved.
2. This efficient raw materials grinder for bio-pharmaceuticals, when switch on through positive plate and negative plate, the external electromagnetic field is used in on the magnetorheological suspensions, after the raw materials is shaken off, the elastic induction rete resets, it resets to drive pneumatic bulldozes the piece, the electro-magnet loses magnetism, make the magnet piece reset under reset spring's drive, but because magnetorheological suspensions viscosity increases this moment, reset spring has been delayed and the speed of deformation is resumeed, thereby the vibrations time has been prolonged, when the magnet piece finally resets, the dielectric plate breaks off the circuit, vibrations disappear, magnetorheological suspensions resumes to liquid simultaneously, the raw materials all is located the pressure-bearing atress bottom plate this moment, can normally grind, do not influence current grinding efficiency.
Drawings
FIG. 1 is a schematic front view of a second piezoelectric crystal according to the present invention;
FIG. 2 is a schematic front view of a second piezoelectric crystal according to the present invention in an undamped state;
FIG. 3 is a schematic front view of an elastic sensing film layer in a pressed state according to the present invention;
FIG. 4 is a schematic front view of an elastic sensing film layer according to the present invention in an uncompressed state.
In the figure: 1. a mortar body; 2. a grinding chamber; 3. a pressure-bearing stressed bottom plate; 4. a flexible connecting section; 5. Installing a cavity; 6. a vibration conduction plate; 7. an elastic sensing film layer; 8. mounting grooves; 9. an active airway; 10. A pneumatic push block; 11. a first piezoelectric crystal; 12. an electromagnet; 13. a sliding long groove; 14. a return spring; 15. a magnet block; 16. a dielectric plate; 17. magnetorheological fluid; 18. a positive plate; 19. a negative plate; 20. vibrating the cavity; 21. an elastic connection section; 22. a conductive plate; 23. a second piezoelectric crystal; 24. An impact block; 25. and a vibration block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, an efficient grinding device for raw materials for bio-pharmaceuticals comprises a mortar body 1 and a vibration conduction plate 6, wherein a grinding cavity 2 is formed inside the mortar body 1, the bottom of the grinding cavity 2 is fixedly connected with a bearing stress base plate 3, the bearing stress base plate 3 and the mortar body 1 are of an integrated structure, a metal reinforcing layer is fixedly connected inside the bearing stress base plate 3, a stress surface of a grinding pestle matched with the mortar body 1 is mainly contacted with the bearing stress base plate 3, raw materials are arranged between the bearing stress base plate 3 and the bottom of the grinding pestle for grinding treatment, flexible connection sections 4 are fixedly connected on two sides of the bearing stress base plate 3, an installation cavity 5 is formed inside the mortar body 1, the vibration conduction plate 6 is movably connected inside the installation cavity 5, the bottom of the vibration conduction plate 6 is fixedly connected to the top of the flexible connection sections 4, and the inner wall of the vibration conduction plate 6 is smoothly connected with the top of the bearing stress base plate 3 and the inner side of the flexible connection sections 4 The raw materials are accumulated to the side face of the vibration conduction plate 6 in the grinding process, and the vibration conduction plate 6 vibrates to shake the raw materials off to the pressure-bearing stress bottom plate 3;
the inner wall of the grinding cavity 2 is provided with a mounting groove 8, the inner wall of the mounting groove 8 is fixedly connected with an elastic sensing film layer 7, a movable air passage 9 is arranged in the mortar body 1, the inner wall of the movable air passage 9 is movably connected with a pneumatic push block 10, the inner side of the movable air passage 9 is fixedly connected to the outer side of the mounting groove 8, the inner side of the movable air passage 9 is hermetically connected with the outer side edge of the elastic sensing film layer 7, when raw materials are accumulated to the outer side of the elastic sensing film layer 7, the grinding pestle extrudes the raw materials, so that the elastic sensing film layer 7 is correspondingly deformed to extrude the gas in the movable air passage 9, the inner wall of the movable air passage 9 is fixedly connected with a first piezoelectric crystal 11, an electromagnet 12 is fixedly connected in the mortar body 1, the first piezoelectric crystal 11 is electrically connected to a current amplifier, the current amplifier is electrically connected to the electromagnet 12, the current amplifier is fixedly connected in the mortar body 1, and the pneumatic push block 10 moves outwards, the first piezoelectric crystal 11 is extruded, the first piezoelectric crystal 11 is pressed to generate current so that the electromagnet 12 is electrified and has magnetism, the magnetism of the electromagnet 12 and the magnetism of the corresponding surface of the magnet block 15 are the same, a sliding long groove 13 is formed in the mortar body 1, a return spring 14 is fixedly connected to the inner wall of the sliding long groove 13, the magnet block 15 is fixedly connected to the outer side of the return spring 14, a dielectric plate 16 is fixedly connected to the inner portion of the magnet block 15, magnetorheological fluid 17 is filled in the sliding long groove 13, a positive plate 18 is fixedly connected to the inner portion of the mortar body 1, and a negative plate 19 corresponding to the positive plate 18 is fixedly connected to the inner portion of the mortar body 1;
the mortar body 1 is internally provided with a vibration cavity 20, the vibration cavity 20 is internally and fixedly connected with a conductive plate 22, the outer side of the sliding long groove 13 is fixedly connected with an external electromagnetic field, a negative plate 19 is electrically connected with the external electromagnetic field and the conductive plate 22, when the positive plate 18 is communicated with the negative plate 19, the external electromagnetic field acts on the magnetorheological fluid 17 to increase the viscosity of the magnetorheological fluid 17, meanwhile, the conductive plate 22 is electrified, the inner side of the conductive plate 22 is fixedly connected with an elastic connecting section 21, the bottom of the elastic connecting section 21 is fixedly connected with a second piezoelectric crystal 23, the first piezoelectric crystal 11 is made of quartz piezoelectric crystals, the second piezoelectric crystal 23 is made of ceramic piezoelectric crystals, the quartz piezoelectric crystals have high pressure sensitivity, the ceramic piezoelectric crystals have obvious deformation when electrified, both sides of the second piezoelectric crystal 23 are fixedly connected with impact blocks 24, and the inner wall of the vibration cavity 20 is fixedly connected with a vibration block 25, a conductive cavity is fixedly connected to the inner side of the vibration cavity 20.
The working principle is as follows: the mortar body 1 provided by the invention is also provided with a grinding pestle which is matched with the mortar body, raw materials are placed between the pressure-bearing stress base plate 3 and the bottom of the grinding pestle for grinding treatment, the stress surface of the grinding pestle is mainly contacted with the pressure-bearing stress base plate 3, the raw materials are continuously accumulated upwards along the vibration conduction plate 6 along with the continuous rotation grinding of the mortar pestle in the grinding process, and at the moment, the grinding pestle cannot grind the raw materials at the side surface of the vibration conduction plate 6;
when the raw material is accumulated to the outer side of the elastic induction film layer 7, the grinding pestle extrudes the raw material, so that the elastic induction film layer 7 at the mounting groove 8 is extruded and deformed, so that the gas in the movable air channel 9 is extruded, the pneumatic pushing block 10 is pushed to move outwards, the outer side of the pneumatic pushing block 10 extrudes the first piezoelectric crystal 11, the first piezoelectric crystal 11 is pressed to generate current, the current is amplified by a current amplifier and then is transmitted to the electromagnet 12, so that the electromagnet 12 is electrified and has magnetism, the magnetism of the corresponding surface of the electromagnet 12 and the magnet block 15 is the same, the magnet block 15 is pushed to move outwards along the sliding long groove 13 through magnetic repulsion, the dielectric plate 16 is driven to move, the sectional area of the dielectric plate 16 is larger than that of the positive plate 18 and the negative plate 19, so that the positive plate 18 and the negative plate 19 are correspondingly connected, the conductive plate 22 is controlled to be electrified, and the second piezoelectric crystal 23 is vibrated, the impact block 24 and the vibration block 25 are driven to contact with each other to drive the mortar body 1 to vibrate, the vibration is transmitted to the vibration conduction plate 6 through the conduction cavity, the vibration conduction plate 6 vibrates to shake the raw materials onto the pressure-bearing stress base plate 3, so that the raw materials are ground again, and the grinding efficiency and the uniformity of the ground particles are improved;
when the positive plate 18 and the negative plate 19 are connected, an external electromagnetic field is connected simultaneously, the external electromagnetic field acts on the magnetorheological fluid 17, the viscosity of the magnetorheological fluid 17 is increased, after the raw materials are shaken off, the elastic induction film layer 7 resets, the pneumatic pushing block 10 is driven to reset, the first piezoelectric crystal 11 does not generate current, the electromagnet 12 loses magnetism, the magnet block 15 is driven by the reset spring 14 to reset, but the viscosity of the magnetorheological fluid 17 is increased at the moment, the speed of the reset spring 14 for restoring deformation is delayed, the vibration time is prolonged, when the magnet block 15 finally resets, the dielectric plate 16 cuts off a circuit, the vibration disappears, the magnetorheological fluid 17 is restored to be liquid, at the moment, the raw materials are located on the pressure bearing stress bottom plate 3, and the normal grinding can be carried out.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides an efficient raw materials grinder for bio-pharmaceuticals, includes mortar body (1) and vibrations conduction board (6), its characterized in that: the mortar body (1) is internally provided with a grinding cavity (2), the bottom of the grinding cavity (2) is fixedly connected with a pressure-bearing stress base plate (3), both sides of the pressure-bearing stress base plate (3) are fixedly connected with flexible connecting sections (4), the mortar body (1) is internally provided with an installation cavity (5), the installation cavity (5) is internally and movably connected with a vibration conduction plate (6), the inner wall of the grinding cavity (2) is provided with an installation groove (8), the inner wall of the installation groove (8) is fixedly connected with an elastic sensing film layer (7), the mortar body (1) is internally provided with a movable air flue (9), the inner wall of the movable air flue (9) is movably connected with a pneumatic pushing block (10), the inner wall of the movable air flue (9) is fixedly connected with a first piezoelectric crystal (11), the mortar body (1) is internally and fixedly connected with an electromagnet (12), and the mortar body (1) is internally provided with a sliding elongated slot (13), the inner wall of the sliding long groove (13) is fixedly connected with a reset spring (14), the outer side of the reset spring (14) is fixedly connected with a magnet block (15), a dielectric plate (16) is fixedly connected inside the magnet block (15), magnetorheological fluid (17) is filled inside the sliding long groove (13), a positive plate (18) is fixedly connected inside the mortar body (1), a negative plate (19) corresponding to the positive plate (18) is fixedly connected inside the mortar body (1), a vibrating cavity (20) is formed inside the mortar body (1), a conductive plate (22) is fixedly connected inside the vibrating cavity (20), an elastic connecting section (21) is fixedly connected on the inner side of the conductive plate (22), a second piezoelectric crystal (23) is fixedly connected at the bottom of the elastic connecting section (21), impact blocks (24) are fixedly connected on two sides of the second piezoelectric crystal (23), and a vibrating block (25) is fixedly connected on the inner wall of the vibrating cavity (20), the inner side of the vibration cavity (20) is fixedly connected with a conduction cavity.
2. A high-efficiency grinding apparatus for a raw material for bio-pharmaceuticals according to claim 1, wherein: the pressure-bearing stress bottom plate (3) and the mortar body (1) are of an integrally formed structure, and a metal reinforcing layer is fixedly connected inside the pressure-bearing stress bottom plate (3).
3. A high-efficiency grinding apparatus for a raw material for bio-pharmaceuticals according to claim 1, wherein: the bottom of the vibration conduction plate (6) is fixedly connected to the top of the flexible connection section (4), and the inner wall of the vibration conduction plate (6) is connected with the top of the pressure-bearing stressed bottom plate (3) and the inner side of the flexible connection section (4) into a whole in a smooth mode.
4. A high-efficiency grinding apparatus for a raw material for bio-pharmaceuticals according to claim 1, wherein: the inner side of the movable air passage (9) is fixedly connected to the outer side of the mounting groove (8), and the inner side of the movable air passage (9) is connected with the outer side edge of the elastic induction film layer (7) in a sealing mode.
5. A high-efficiency grinding apparatus for a raw material for bio-pharmaceuticals according to claim 1, wherein: the first piezoelectric crystal (11) is electrically connected to a current amplifier, the current amplifier is electrically connected to the electromagnet, and the current amplifier is fixedly connected to the inside of the mortar body (1).
6. A high-efficiency grinding apparatus for a raw material for bio-pharmaceuticals according to claim 1, wherein: an external electromagnetic field is fixedly connected to the outer side of the sliding long groove (13), and the negative plate (19) is electrically connected to the external electromagnetic field and the conductive plate (22).
7. A high-efficiency grinding apparatus for a raw material for bio-pharmaceuticals according to claim 1, wherein: the first piezoelectric crystal (11) is made of quartz piezoelectric crystals, and the second piezoelectric crystal (23) is made of ceramic piezoelectric crystals.
CN202011258005.6A 2020-11-12 2020-11-12 Efficient raw materials grinder for bio-pharmaceuticals Active CN112495548B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017152334A1 (en) * 2016-03-07 2017-09-14 刘湘静 New and highly efficient grain milling device
CN109201198A (en) * 2018-08-30 2019-01-15 李斌宇 A kind of milling apparatus for bio-pharmaceuticals
CN109590073A (en) * 2018-12-22 2019-04-09 海南檀溪新型材料有限公司 A kind of fine grinding system of slag
CN110694748A (en) * 2019-11-01 2020-01-17 栾川县金鼎矿业有限公司 High-energy-efficiency ball mill and rotating speed control method thereof
KR20200023026A (en) * 2018-08-24 2020-03-04 (주) 제이에스티 System for impurity processing of pulp recycling process

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017152334A1 (en) * 2016-03-07 2017-09-14 刘湘静 New and highly efficient grain milling device
KR20200023026A (en) * 2018-08-24 2020-03-04 (주) 제이에스티 System for impurity processing of pulp recycling process
CN109201198A (en) * 2018-08-30 2019-01-15 李斌宇 A kind of milling apparatus for bio-pharmaceuticals
CN109590073A (en) * 2018-12-22 2019-04-09 海南檀溪新型材料有限公司 A kind of fine grinding system of slag
CN110694748A (en) * 2019-11-01 2020-01-17 栾川县金鼎矿业有限公司 High-energy-efficiency ball mill and rotating speed control method thereof

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