CN112774822A - A high-efficient negative pressure rubbing crusher for ultramicro powder preparation - Google Patents
A high-efficient negative pressure rubbing crusher for ultramicro powder preparation Download PDFInfo
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- CN112774822A CN112774822A CN201911071604.4A CN201911071604A CN112774822A CN 112774822 A CN112774822 A CN 112774822A CN 201911071604 A CN201911071604 A CN 201911071604A CN 112774822 A CN112774822 A CN 112774822A
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- pulverizer
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- 239000000843 powder Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims description 5
- 238000000227 grinding Methods 0.000 claims abstract description 103
- 239000000463 material Substances 0.000 claims abstract description 62
- 238000010298 pulverizing process Methods 0.000 claims abstract description 37
- 238000003860 storage Methods 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 12
- 238000003825 pressing Methods 0.000 claims description 8
- 230000001133 acceleration Effects 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 5
- 230000000903 blocking effect Effects 0.000 claims 2
- 238000005086 pumping Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 11
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 9
- 229910002804 graphite Inorganic materials 0.000 description 9
- 239000010439 graphite Substances 0.000 description 9
- 239000002245 particle Substances 0.000 description 9
- 230000003139 buffering effect Effects 0.000 description 6
- 238000011068 loading method Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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Classifications
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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
- B02C19/00—Other disintegrating devices or methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary 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
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/24—Passing gas through crushing or disintegrating zone
- B02C23/32—Passing gas through crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention relates to the field of crushing equipment, in particular to a high-efficiency negative pressure crusher for preparing ultra-micro powder. The high-efficiency negative pressure pulverizer for preparing the ultra-micro powder comprises a case with a pulverizing cavity, a fixed grinding head arranged on the inner wall of the pulverizing cavity, and a grinding disc rotationally arranged in the pulverizing cavity, wherein a movable grinding head is arranged on the grinding disc, and the movable grinding head and the fixed grinding head are matched for pulverizing materials; the machine case comprises a case body and a matching disc which is fixed on the case body and forms a crushing cavity with the case body in an enclosing mode, the matching disc is in upper-lower sealing fit with the grinding disc, and a negative pressure interface which is used for being communicated with the crushing cavity and is connected with a negative pressure source to exhaust air from the crushing cavity is configured on the machine case. The efficient negative pressure pulverizer for preparing the ultra-micro powder is provided with the negative pressure interface, the air is exhausted from the pulverizing cavity through the negative pressure interface, the vacuum degree in the pulverizing cavity is ensured, the oxidation degree of the powder can be reduced in the pulverizing process, the powder quality is improved, and meanwhile, the ultrafine powder pulverizer is not easy to burn and explode under the high-temperature condition.
Description
Technical Field
The invention relates to the field of crushing equipment, in particular to a high-efficiency negative pressure crusher for preparing ultra-micro powder.
Background
The traditional powder preparation equipment has the defects of low yield, large prepared powder particles and the like, and can not meet the development requirement of new energy industry. Chinese patent with grant publication No. CN202606236U and grant publication No. 2012.12.19 discloses a spherical graphite pulverizer, which comprises a pulverizer body and an air inlet chamber disposed below the pulverizer body, a pulverizing chamber is disposed above the air inlet chamber, a flow dividing chamber is disposed in the pulverizing chamber, the pulverizing chamber and the flow dividing chamber are separated by a flow dividing ring, a pulverizing disk is disposed at the bottom of the pulverizing chamber, a pulverizing knife is disposed on the pulverizing disk, when the pulverizer works, graphite particles are fed into the pulverizing chamber, the pulverizing disk rotates to cut and grind the graphite particles between the graphite shell and the inner wall of the pulverizing chamber, meanwhile, the graphite particles are rolled upwards by the air flow generated by the air inlet chamber, the graphite shell collides with the inner wall of the pulverizing chamber and the flow dividing ring, so that the graphite particles are processed into spheres or approximate spheres in a short time in. However, when the graphite pulverizer is used, the surface of the powder is seriously oxidized in the air, the high temperature generated in the pulverizing process even causes the powder to be combusted and exploded, and the prepared powder has poor quality and low safety coefficient.
Disclosure of Invention
The invention aims to provide a high-efficiency negative pressure pulverizer for preparing ultrafine powder, which solves the problems of poor powder quality and low safety coefficient caused by easy oxidation and even combustion of powder in the pulverizing process of the conventional pulverizer.
In order to achieve the purpose, the technical scheme of the high-efficiency negative pressure pulverizer for preparing the ultrafine powder comprises the following steps:
a high-efficient negative pressure rubbing crusher for ultramicro powder preparation includes:
the crushing chamber is arranged in the case, and a feeding port and a discharging port which are communicated with the crushing chamber are arranged on the case;
the fixed grinding head is arranged on the inner wall of the crushing cavity;
the grinding disc is rotationally arranged in the grinding cavity, a movable grinding head is arranged on the grinding disc, and the movable grinding head and the fixed grinding head are matched for grinding materials;
the machine case comprises a case body and a matching disc which is fixed on the case body and forms a crushing cavity with the case body in an enclosing mode, the matching disc is in upper-lower sealing fit with the grinding disc, and a negative pressure interface which is used for being communicated with the crushing cavity and is connected with a negative pressure source to exhaust air from the crushing cavity is configured on the machine case.
The invention has the beneficial effects that: the efficient negative pressure pulverizer for preparing the ultra-micro powder is provided with the negative pressure interface, the pulverizing cavity is exhausted through the negative pressure interface, air enters the pulverizing cavity through the air inlet channel, the material at the matching part of the movable grinding head and the fixed grinding head is blown upwards, repeated pulverization of the material is realized, the pulverizing cavity is kept in a negative pressure state through air exhaust, the oxidation degree of the powder can be reduced in the pulverizing process, the quality of the powder is improved, and meanwhile, the powder is not easy to burn and explode under the high-temperature condition.
Furthermore, the case comprises an upper case body and a lower case body, the matching disc is fixed at the top of the lower case body, the lower case body is fixed with the upper case body through the matching disc, and the crushing cavity is defined by the upper case body and the matching disc. The lower box body is convenient for installing the rotary table, the matching disc is fixed on the lower box body, so that the lower box body and the upper box body can be conveniently installed, and meanwhile, the fixing strength of the upper box body, the lower box body and the matching disc can be ensured.
Furthermore, a grinding head positioning groove for inserting the fixed grinding head from top to bottom is formed in the matching disc, and a pressing piece for pressing the fixed grinding head on the side wall of the box body is arranged on the box body. The grinding head positioning groove is formed in the matching disc, so that the matching disc and the fixed grinding head can be conveniently determined, and the fixing strength of the fixed grinding head, the matching disc and the box body is guaranteed.
Furthermore, a filter positioned at the upstream of the negative pressure interface is arranged on the case. Avoiding the powder from entering the negative pressure source.
Furthermore, a negative pressure source cut-off valve is arranged at the downstream of the filter, and an outlet of the negative pressure source cut-off valve forms the negative pressure interface, so that the control of the size of the negative pressure in the crushing cavity is facilitated.
Furthermore, the feed inlet department of quick-witted case is equipped with quantitative loading attachment, and quantitative loading attachment includes feed bin and the feeding shut-off valve of setting in the feed bin bottom, and quantitative loading attachment's setting can realize the automation of material loading.
Further, the discharge gate setting of quick-witted case is on the box lateral wall, and discharge gate department activity is provided with row flitch and drives row flitch drive arrangement of flitch activity, the discharge gate setting of quick-witted case is on the box lateral wall, and discharge gate department is provided with the discharge gate controlling means that the control discharge gate was opened and is closed, the discharge gate outside is equipped with the material buffer storage storehouse that supplies discharge gate exhaust material to get into, and material buffer storage storehouse has the export of buffer storage storehouse, and buffer storage storehouse exit is equipped with the buffer storage storehouse exit control device that the export of control buffer storage storehouse was opened and close, and when discharge gate controlling means control discharge gate was opened, buffer storage storehouse exit control device control buffer storage storehouse export was closed. Through discharge gate controlling means and buffer bin outlet controlling means can avoid when arranging the material that the air got into in a large number smashes the vacuum that the chamber influenced crushing chamber, can arrange the material under the condition that does not influence crushing operation.
Furthermore, discharge gate controlling means is including the activity setting in the row's of discharge gate department row material board and the row's of drive row material board drive arrangement of row material board activity, has the row material position of opening the discharge gate and the putty position of shutoff discharge gate in the activity stroke of row material board. The discharge plate has simple structure and can adapt to a larger discharge hole.
Furthermore, be equipped with on the mill and be used for getting rid of the material to the acceleration dish that moves bistrique department with the draft tube downside, improve material speed, improve crushing efficiency, improve crushing effect.
Furthermore, the height of the edge of the acceleration disc is lower than that of the center, so that large-particle materials enter a crushing position, small-particle materials are left in the center, and the crushing efficiency is improved.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of a high-efficiency negative pressure pulverizer for preparing ultrafine powder according to the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an enlarged view of portion B of FIG. 1;
in the figure: 1-a chassis; 11-upper box body; 111-a crushing chamber; 112-a feed inlet; 113-a discharge port; 114-upper case flange; 12-a lower box body; 13-mating discs; 2-a base; 3-fixing the grinding head; 4-pressing a ring; 5-a guide shell; 61-grinding disc; 62-moving the grinding head; 63-acceleration disk; 631-horizontal part; 632-a guide portion; 64-grinding disc rotating shaft; 65-vertical bearing seat; 71-a filter; 72-negative pressure source block valve; 81-bin; 82-a feed shut-off valve; 91-driving a cylinder; 92-a material buffer bin; 93-a buffer storage bin outlet block valve; 94-a discharge plate; 941-circular flanging; 95-sealing ring; and 10, driving a motor.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
Referring to fig. 1 and 2, the efficient negative pressure pulverizer for preparing ultra-fine powder according to the present invention includes a housing 1 and a base 2, the housing 1 includes an upper housing 11 and a lower housing 12, a pulverizing chamber 111 is disposed in the upper housing 11, the upper housing 11 is provided with a feeding port 112 and a discharging port 113 communicated with the pulverizing chamber 111, a plurality of fixed grinding heads 3 are circumferentially fixed to an inner wall of the pulverizing chamber 111, and the fixed grinding heads 3 are fixed to an inner wall of the pulverizing chamber 111 through a pressing ring 4. The crushing cavity 111 is also internally provided with a guide shell 5 and a grinding disc 61, wherein the upper port of the guide shell 5 and the feed port 112 are arranged up and down, so that the material entering from the feed port 112 falls into the guide shell 5. In other embodiments, the fixed grinding head can be fixed on the inner wall of the crushing cavity through a plurality of pressing plates or pressing blocks.
The grinding disc 61 is rotatably arranged in the grinding cavity 111, a plurality of movable grinding heads 62 are fixed on the periphery of the grinding disc 61, the movable grinding heads 62 are arranged along the circumferential direction of the grinding disc 61, the movable grinding heads 62 are fixed on the grinding disc 61 through bolts, and the movable grinding heads 62 and the fixed grinding heads 3 are matched for grinding materials.
The upper side of the grinding disc 61 is provided with an accelerating disc 63 fixed opposite to the grinding disc 61, the accelerating disc 63 is arranged at the lower side of the guide cylinder 5, the accelerating disc 63 is used for throwing the materials to the movable grinding head 62, the top surface of the accelerating disc 63 comprises a horizontal part 631 in the middle and a guide part 632 at the periphery of the horizontal part 631, and the guide part 632 gradually descends from the center to the periphery to guide the materials to the movable grinding head 62. The grinding disc 61 is fixed on the grinding disc rotating shaft 64, the accelerating disc 63 is fixed on the top surface of the grinding disc rotating shaft 64, and the grinding disc rotating shaft 64 rotates to drive the grinding disc 61 and the accelerating disc 63 to rotate. The material running speed can be increased through the accelerating disc 63, and the crushing forming efficiency and effect of the materials are improved.
The case 1 further comprises a matching disc 13 welded and fixed on the top of the lower case 12, the lower case 12 is fixed with the upper case 11 through the matching disc 13, and the matching disc 13 is fixed with an upper case flange 114 at the bottom of the upper case 11. The upper box body 11 and the matching disk 13 enclose a crushing cavity 111, the matching disk 13 is arranged on the lower side of the grinding disk 61 and is in clearance fit with the grinding disk 61, and an air inlet channel for air flow to enter the crushing cavity 111 to blow up materials at the matching part of the movable grinding head 62 and the fixed grinding head 3 is formed between the upper box body and the matching disk.
The top of the matching disc 13 is provided with a grinding head positioning groove for inserting the fixed grinding head 3 from top to bottom, and the bottom of the fixed grinding head 3 is inserted in the matching disc 13, so that the fixing effect of the fixed grinding head 3 is ensured. A grinding disc gasket arranged at the bottom of the grinding disc 61 is arranged between the grinding disc 61 and the grinding disc rotating shaft 64, and the matching gap between the matching disc 13 and the grinding disc 61 can be adjusted by increasing or decreasing the grinding disc gasket between the grinding disc 61 and the grinding disc rotating shaft 64, so that the air inflow is adjusted. In other embodiments, the fixed abrasive tip may be fixed only to the inner wall of the pulverization chamber.
As shown in fig. 1, the upper box 11 is provided with a filter 71 and a negative pressure source cut-off valve 72 connected in series, in this embodiment, the negative pressure source cut-off valve 72 is a pneumatic valve, and in other embodiments, the negative pressure source cut-off valve may also be an electromagnetic valve. The outlet of the negative pressure source cut-off valve 72 forms a negative pressure interface for connecting with a negative pressure source, and the negative pressure source cut-off valve 72 can exhaust air from the crushing cavity 111 during use, so that the oxidation degree of materials in the crushing process is reduced, and the quality of powder is improved. The filter 71 prevents the negative pressure source from being damaged by powder leakage. When the pulverizer works in the embodiment, the negative pressure in the pulverizing cavity 111 is pumped to 0.02MPa, and then the materials are added into the pulverizing cavity 111 for pulverizing. In other embodiments, a negative pressure interface may be directly disposed on the chassis, and the negative pressure interface needs to be externally connected with a control valve and a filter; of course, besides the filter, a filter screen may be disposed on the inner wall of the case.
In this embodiment, the feed inlet 112 is provided with a quantitative feeding device, the quantitative feeding device includes a storage bin 81 and a feeding block valve 82 arranged at the bottom of the storage bin 81, the feed inlet 112 is provided with a flow meter, the flow meter measures the feeding amount and feeds back the feeding block valve 82, and a controller of the feeding block valve 82 controls the feeding block valve 82 to open and close according to the feeding amount of the flow meter, so as to realize quantitative feeding. Automatic control of the feeding can be realized through the dosing. In the present embodiment, the feed cut-off valve 82 is a pneumatic valve. In other embodiments, the feed shut-off valve may be a solenoid valve.
In this embodiment, 113 departments of discharge gate activity are provided with row's flitch and drive actuating cylinder 91 that drives row flitch activity, row flitch control discharge gate 113 opens and close, row material position and the putty position of shutoff discharge gate 113 of opening discharge gate 113 have in row flitch's activity stroke, 113 departments of discharge gate are equipped with the material buffering storehouse 92 that supplies the material to get into when arranging the flitch in row material position, material buffering storehouse 92 has the export of buffering storehouse, buffering storehouse exit is equipped with the buffering storehouse export shutoff valve 93 that the export of control buffering storehouse was opened and close. Buffer memory storehouse export shut-off valve 93 is chain with the row flitch, and when row flitch was opened, buffer memory storehouse export shut-off valve 93 can not be opened, avoids crushing room to get into a large amount of air and influences the vacuum of crushing room.
As shown in fig. 1 and fig. 3, the discharging plate 94 is fixed at the end of the piston rod of the driving cylinder 91, and moves back and forth along with the piston rod 911, so as to open or close the discharging port 113, in order to ensure the sealing of the crushing chamber, a sealing ring 95 is arranged on the discharging plate 94, the discharging plate 94 is in sealing fit with the discharging port 113 through the sealing ring 95, an annular flange 941 folded toward the driving cylinder 91 is arranged at the edge of the discharging plate 94 in this embodiment, the annular flange 941 is obliquely arranged, and the annular flange 941 is gradually close to the axis of the driving cylinder 91 in the direction from the cylinder body to the discharging port 113 in the. The two sealing rings 95 are arranged on the annular folded edge 941 at intervals along the axial direction of the driving cylinder, and the discharge port 113 is an expanded opening matched with the shape of the annular folded edge 941, so that the sealing grade of the discharge plate 94 and the discharge port is improved. The discharge plate 94 and the driving cylinder 91 in this embodiment form a discharge port control device for controlling the opening and closing of the discharge port, and in other embodiments, the discharge port control device may also be a pneumatic valve or an electric control valve; the driving mode of the discharging plate is not limited to the driving cylinder, and for example, the driving cylinder can be an electric push rod, a hydraulic cylinder, a lead screw nut mechanism and the like. In the embodiment, the cache bin outlet block valve forms a cache bin outlet control device, and in other embodiments, besides the block valve, a manual gate plate and the like can be arranged at the cache bin outlet to control the opening and closing of the outlet; of course, in other embodiments, the discharge port control device may not be provided at the discharge port, and at this time, the screw conveyor in the prior art may be used to discharge the material, and the screw conveyor may be started when the material needs to be discharged, but at this time, in order to ensure sealing, a sealing cover should be provided at the outlet of the screw conveyor.
The grinding disc rotating shaft 64 is rotatably assembled on the case 1 through a vertical bearing seat 65, the lower end of the grinding disc rotating shaft 64 extends out of the case 1, a driven wheel is arranged on the part, extending out of the case 1, of the grinding disc rotating shaft 64, a driving motor 10 is arranged on the base 2, an output shaft of the driving motor 10 is fixedly provided with a driving wheel, and the driving wheel and the driven wheel are in belt transmission. The driving motor 10 in this embodiment is a speed-adjustable motor, which facilitates to adjust the rotation speed of the driving motor 10 according to the requirement.
The pulverizer in this embodiment further includes a PLC control system, wherein the driving motor 10, the buffer bin outlet block valve 93, the feeding block valve 82, the negative pressure source block valve 72, and the discharge plate are all controlled by the control system to realize the automatic operation of the pulverizer. In other embodiments, the pulverizer can be semi-automatically or manually controlled according to actual needs, for example, the charging amount can be manually judged during charging, the charging amount can be determined according to charging time, and the charging is started by manually opening the charging cutoff valve after the negative pressure in the pulverizing cavity reaches a certain value.
When the high-efficiency negative pressure pulverizer for preparing the ultra-micro powder is used, the driving motor 10 is started, the grinding disc rotating shaft 64 is driven to rotate through the belt, the grinding disc rotating shaft 64 drives the grinding disc 61 and the accelerating disc 63 to rotate, when the rotating speed reaches a set value, the discharging plate and the feeding block valve 82 are closed, the negative pressure source block valve 72 is opened to begin air suction to the grinding chamber, when the vacuum degree reaches 0.02MPa, the feeding block valve 82 is slowly opened, materials enter the grinding chamber through the feeding block valve 82 and fall on the accelerating disc 63 under the action of the fluid director, under the rotating action of the accelerating disc 63 and the action of the gravity of the materials, the materials are accelerated to quickly reach the matching part of the movable grinding head 62 and the fixed grinding head 3, and the materials are crushed and shaped under the action of the movable grinding head 62 and the fixed grinding head. During the crushing process, the vacuumizing equipment continuously exhausts air to the crushing cavity, the air flow entering the crushing cavity through the air inlet channel can blow up materials at the movable grinding head and the fixed grinding head, the materials rise to the upper side of the fluid director through the cavity outside the fluid director, the materials with large particle sizes continuously fall onto the accelerating disc 63 under the action of gravity, the materials are continuously conveyed to the movable grinding head 62 and the fixed grinding head 3, the materials and the fixed grinding head 3 rub against each other under the action of centrifugal force, the materials are sheared at high speed in the crushing cavity 111, impact with each other, and are coiled and fused, and the purpose of crushing and shaping the materials is achieved. Set for crushing time according to the particle size of original material, after the operation set time, open row's flitch through arranging the material cylinder, the material gets into material buffer storage 92 under the high rotation effect, it is up to wait to arrange material operating time, the motor is unloaded, the operating current reduces, satisfy high-speed motor low current setting value, the system judges that the material in the crushing box is discharged, it closes to arrange the flitch messenger, the broken operation of beginning next time, close and arrange the finished product material discharge in the flitch after the time delay set time of material, open buffer storage export shut-off valve 93 and will buffer storage.
The pulverizer is used for pulverizing graphite in the embodiment, and in other embodiments, the pulverizer can also be applied to materials with similar requirements, such as positive electrode materials or other negative electrode materials for lithium ion batteries.
Claims (10)
1. A high-efficient negative pressure rubbing crusher for ultramicro powder preparation includes:
the crushing chamber is arranged in the case, and a feeding port and a discharging port which are communicated with the crushing chamber are arranged on the case;
the fixed grinding head is arranged on the inner wall of the crushing cavity;
the grinding disc is rotationally arranged in the grinding cavity, a movable grinding head is arranged on the grinding disc, and the movable grinding head and the fixed grinding head are matched for grinding materials;
the grinding machine is characterized in that the machine case comprises a case body and a matching disc fixed on the case body and enclosing with the case body to form a grinding cavity, the matching disc and the grinding disc are in clearance fit up and down and form an air inlet channel between the matching disc and the grinding disc, the air inlet channel is used for allowing air flow to enter the grinding cavity so as to blow up materials at the matching position of the movable grinding head and the fixed grinding head, and a negative pressure interface which is used for being communicated with the grinding cavity and is connected with a negative pressure source is arranged on the machine case and is used for pumping.
2. The efficient negative pressure pulverizer for ultrafine powder production according to claim 1, wherein the housing comprises an upper housing and a lower housing, the engaging plate is fixed to the top of the lower housing, the lower housing is fixed to the upper housing by the engaging plate, and the pulverizing chamber is defined by the upper housing and the engaging plate.
3. The efficient negative pressure pulverizer for ultrafine powder production according to claim 1, wherein the fitting plate is provided with a pulverizer positioning groove into which the fixed pulverizer is inserted from top to bottom, and the housing is provided with a pressing member for pressing the fixed pulverizer against the inner wall of the pulverizing chamber.
4. The efficient negative pressure pulverizer for preparing ultrafine powder according to claim 1, 2 or 3, wherein the housing is provided with a filter upstream of the negative pressure port.
5. The efficient negative pressure pulverizer for preparing ultrafine powder according to claim 4, wherein a negative pressure source cut-off valve is disposed downstream of the filter, and an outlet of the negative pressure source cut-off valve forms the negative pressure port.
6. The efficient negative pressure pulverizer for preparing ultrafine powder according to claim 1, 2 or 3, wherein a quantitative feeding device is disposed at a feeding port of the machine case, and the quantitative feeding device comprises a storage bin and a feeding block valve disposed at the bottom of the storage bin.
7. The efficient negative pressure pulverizer for ultra-fine powder production according to claim 1, 2 or 3, wherein the discharge port of the casing is disposed on a sidewall of the casing, the discharge port is provided with a discharge port control device for controlling the opening and closing of the discharge port, a material buffer bin is disposed outside the discharge port for receiving the material discharged from the discharge port, the material buffer bin has a buffer bin outlet, the buffer bin outlet is provided with a buffer bin outlet control device for controlling the opening and closing of the buffer bin outlet, and the buffer bin outlet control device controls the closing of the buffer bin outlet when the discharge port control device controls the opening of the discharge port.
8. The efficient negative pressure pulverizer for ultrafine powder production according to claim 7, wherein the discharge port control means comprises a discharge plate movably disposed at the discharge port and a discharge plate driving means for moving the discharge plate, and the discharge plate has a discharge position for opening the discharge port and a blocking position for blocking the discharge port during its moving stroke.
9. The efficient negative pressure pulverizer for preparing ultrafine powder according to claim 1, 2 or 3, wherein the grinding disc is provided with an accelerating disc at the lower side of the draft tube for throwing the material to the movable grinding head.
10. The efficient negative pressure pulverizer for ultrafine powder production according to claim 9, wherein the height of the edge of the acceleration disk is lower than the height of the center.
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| CN201911071604.4A CN112774822A (en) | 2019-11-05 | 2019-11-05 | A high-efficient negative pressure rubbing crusher for ultramicro powder preparation |
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| CN201911071604.4A CN112774822A (en) | 2019-11-05 | 2019-11-05 | A high-efficient negative pressure rubbing crusher for ultramicro powder preparation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114178032A (en) * | 2021-12-09 | 2022-03-15 | 萝北奥星新材料有限公司 | Production method of spheroidized graphite with low specific surface area |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114178032A (en) * | 2021-12-09 | 2022-03-15 | 萝北奥星新材料有限公司 | Production method of spheroidized graphite with low specific surface area |
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