CN112547270B - Crushing and grading device and crushing and grading method - Google Patents
Crushing and grading device and crushing and grading method Download PDFInfo
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- CN112547270B CN112547270B CN202011447030.9A CN202011447030A CN112547270B CN 112547270 B CN112547270 B CN 112547270B CN 202011447030 A CN202011447030 A CN 202011447030A CN 112547270 B CN112547270 B CN 112547270B
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- grading
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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
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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
- 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
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
- B02C23/12—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
The invention provides a crushing and grading device and a crushing and grading method, wherein the device comprises a working bin, a crushing unit and a grading unit; the crushing unit comprises a crushing motor, a main shaft and a crushing assembly, the crushing motor is connected with at least part of the main shaft positioned in the working bin, and the main shaft in the working bin is sleeved with the crushing assembly and is provided with a feeding port; the grading unit comprises an air inducing device, a grading motor, a grading shaft and a grading element, wherein the grading motor is connected with the grading shaft, the grading element positioned in the working bin is arranged on the grading shaft, and a discharge port for connecting the air inducing device is arranged on the working bin at a position corresponding to the grading element. The material to be crushed is crushed by the crushing assembly after entering the working bin, the crushed material is conveyed to the classifying element under the action of the attraction of the air inducing device to be classified into fine material and coarse material, the fine material is discharged out of the working bin from the discharge port under the action of the attraction, and the coarse material falls back to the crushing unit to be continuously crushed. The crushing unit and the grading unit are positioned in one working bin, so that the size is small, and the occupied area is saved.
Description
Technical Field
The invention relates to the field of material crushing, in particular to a crushing and grading device and a crushing and grading method.
Background
At present, the existing crushing and grading system in China mainly comprises a crusher, a grader, a high-pressure draught fan and the like, wherein the crusher, the grader and the high-pressure draught fan are sequentially connected, material conveying is completed by negative pressure suction and delivery of the high-pressure draught fan, during work, materials fed into the crusher are crushed and then conveyed into the grader under the action of the gravity of the high-pressure draught fan, the grader grades the crushed materials into coarse materials and fine materials, the fine materials are discharged through a fine material discharge port and a discharge pipe of the grader under the action of the gravity of the high-pressure draught fan, and the coarse materials are discharged out of the grader through a coarse material outlet.
However, the system adopts the existing crusher and grader, and the two independent devices result in larger system volume and occupied area.
Disclosure of Invention
The present invention provides a comminution and classification device and a comminution and classification method that overcome or at least partially solve the above problems.
In a first aspect, the invention provides a crushing and grading device, which comprises a working bin, a crushing unit and a grading unit;
the crushing unit comprises a crushing motor, a main shaft and a crushing assembly, the crushing motor is connected with the main shaft, at least part of the main shaft is positioned in the working bin, the crushing assembly is sleeved on the main shaft positioned in the working bin, and a feeding port is formed in the position, corresponding to the crushing assembly, of the working bin;
the grading unit comprises an air inducing device, a grading motor, a grading shaft and a grading element, the grading motor is connected with the grading shaft, the grading element is installed on the grading shaft and located in the working bin, a discharge hole is formed in the position, corresponding to the grading element, of the working bin, and the air inducing device is connected with the discharge hole.
Preferably, the height of the axial center of the classifying shaft is greater than the highest height of the crushing assembly.
Preferably, the surface of rotation defined by said size reduction assembly is perpendicular to the surface of rotation defined by said classifying element.
Preferably, crushing unit includes carousel and two at least crushing boards, the carousel suit is in on the main shaft, two at least crushing boards are installed on the carousel and in circumference distributes on the carousel, just two at least crushing boards face grading component sets up.
Preferably, the part of the inner wall of the working bin, which corresponds to the rotary disc, is an arc surface, and the rotary disc is in clearance fit with the arc surface.
Preferably, the classifying element is a classifying wheel.
Preferably, the grading shaft is located in a material leading-out sleeve, a discharge port on the working bin is communicated with the interior of the leading-out sleeve, a material leading-out port is arranged on the material leading-out sleeve located outside the working bin, and the air inducing device is connected with the material leading-out port.
Preferably, the method further comprises the following steps: a pulse dust collector and a cyclone collector;
the induced draft device is connected with the discharge port sequentially through the pulse dust collector and the cyclone collector.
In a second aspect, the present invention further provides a crushing and grading method based on the crushing and grading device, including:
after materials to be crushed enter the working bin through the feeding port, the materials are crushed through the crushing assembly;
the crushed materials are conveyed into the grading element under the action of the gravity of the air inducing device to be graded into fine materials and coarse materials, the fine materials are discharged out of the working bin from the discharge port under the action of the gravity of the air inducing device, and the coarse materials fall back to the crushing unit to be continuously crushed.
Preferably, the fine material discharged from the working bin contains air containing dust,
then, the method further comprises:
and the fine materials discharged from the working bin are input into the cyclone collector, the cyclone collector separates the fine materials from air containing dust, the fine materials from which the dust is separated are discharged from the cyclone collector, the air containing the dust is input into the pulse dust collector, and the pulse dust collector collects the dust to obtain clean air and discharges the clean air.
According to the technical scheme, the crushing unit and the grading unit of the crushing and grading device are positioned in one working bin, so that the size is small, and the occupied area is saved.
Drawings
FIG. 1 is a schematic structural view of a pulverizing and classifying device according to an embodiment of the present invention;
fig. 2 is a flowchart of a pulverizing and classifying method according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Fig. 1 is a schematic structural view of a crushing and classifying device according to an embodiment of the present invention.
A crushing and classifying device as shown in fig. 1 includes a working bin 25, a crushing unit 24, and a classifying unit 21;
the crushing unit 24 comprises a crushing motor, a main shaft 72 and a crushing assembly, the crushing motor is connected with the main shaft 72, at least part of the main shaft 72 is positioned in the working bin 25, the crushing assembly is sleeved on the main shaft 72 positioned in the working bin 25, and a feeding port is formed in the working bin 25 at a position corresponding to the crushing assembly;
When the crushing and grading device works, the air inducing device, the crushing motor and the grading motor 211 are started, the crushing motor drives the crushing assembly to rotate through the main shaft 72, and the grading motor 211 drives the grading element 213 to rotate through the grading shaft 212. After the material to be crushed enters the working bin 25 through the feeding opening (the feeding opening can be connected with a feeding pipe 23 as shown in fig. 1), the material is crushed by the crushing assembly, the crushed material is conveyed into the classifying element 213 under the action of the gravity of the air inducing device to be classified into fine material and coarse material, the fine material is discharged out of the working bin 25 from the discharging opening, and the coarse material falls back to the crushing unit 24 to be crushed continuously. The crushing unit 24 and the grading unit 21 of the crushing and grading device of the embodiment of the invention are positioned in a working bin 25, so that the size is small, and the occupied area is saved.
As shown in figure 1, the upper part of the main shaft 72 penetrates through the working chamber 25 and is connected with the upper end surface and the bottom surface of the working chamber 25 through a bearing, the lower part of the main shaft is connected with a crushing motor outside the working chamber 25, the front end part of the grading shaft 212 provided with the grading element 213 is positioned in the working chamber 25, the rear end part of the grading shaft is positioned outside the working chamber 25, and the grading motor 211 is connected with the tail end of the grading shaft 212 outside the working chamber 25, so that the structure can save the volume of the working chamber 25 and the floor area.
The induced draft device can be an induced draft fan.
If the height of the axis of the classifying shaft 212 is equal to or lower than the maximum height of the pulverizing assembly, the pulverized material may be partially blocked by the components of the pulverizing unit 24 so that the pulverized material cannot completely enter the classifying unit 21, and based on this, as a preferred embodiment, the height of the axis of the classifying shaft 212 is greater than the maximum height of the pulverizing assembly, the material pulverized to a predetermined particle size can completely move upward to enter the classifying unit 21 without being blocked by the pulverizing unit 24, and the entire pulverized material is classified.
The gravitation of the air inducing device has a certain matching relation with the grain diameter of the material, namely the gravitation can only suck animal material grains when the grain diameter of the material reaches the preset grain diameter. If the included angle between the rotating surface formed by the crushing assembly and the rotating surface formed by the classifying element 213 is not 90 degrees, the material is thrown into the classifying element 213 under the action of centrifugal force, so that the material enters the classifying unit 21 in advance when not crushed to the preset particle size, and the produced material cannot meet the requirement of the preset particle size.
As shown in fig. 1, as a preferred embodiment, the pulverizing assembly includes a rotating disc 243 and at least two pulverizing plates 242, the rotating disc 243 is sleeved on the main shaft 72, the at least two pulverizing plates 242 are mounted on the rotating disc 243 and circumferentially distributed on the rotating disc 243, and the at least two pulverizing plates 242 are arranged facing the classifying element 213, so that the material at each angle on the rotating disc 243 can be pulverized, and thus the material can be sufficiently pulverized. The at least two crushing plates 242 are installed at the outer edge of the rotating plate 243 so that all the materials on the rotating plate 243 can be crushed.
As a preferred embodiment, the portion of the inner wall of the working bin 25 corresponding to the rotating disc 243 is an arc surface, the rotating disc 243 and the arc surface are in clearance fit, and the rotating disc 243 can stop the material, so as to prevent the material from falling into the space below the rotating disc 243 in the working bin 25, thereby ensuring continuous pulverization of the material.
As a preferred embodiment, the inner cavity of the working chamber 25 is a cylindrical cavity, and particularly, the working chamber 25 can be a cylinder. An annular liner 241 can be installed between the inner wall of the working chamber 25 and the rotating disc 243 to protect the inner wall of the working chamber 25 from abrasion, and at this time, the rotating disc 243 and the liner 241 are in clearance fit.
As shown in fig. 1, the classifying element 213 is a classifying wheel.
If the induced draft device direct connection work bin 25 on the bin outlet, can be owing to need installation connecting piece etc. to occupy the space of work bin 25 lateral wall, and then lead to the increase of working volume, on this basis, as a preferred embodiment, hierarchical axle 212 is located a material and draws forth the cover, bin outlet on the work bin 25 with draw forth the inside intercommunication of cover, be located the material of work bin 25 outside is drawn forth and is sheathe in and is equipped with the material and draw forth the mouth, the induced draft device is connected the material is drawn forth the mouth. The structure of the air inducing device is connected with the material leading-out port on the leading-out sleeve, and the space of the side wall of the working bin 25 is not required to be occupied, so that the volume of the working bin 25 can be reduced. As shown in fig. 1, the material outlet is connected to an induced draft device through a discharge pipe 22.
In this embodiment, the classifying shaft 212 is installed on the bearing seat, and a protective sleeve is preferably installed outside the classifying shaft 212 to prevent the material from being stuck on the classifying shaft 212 to affect the output of the material and simultaneously prevent the material from polluting the classifying shaft 212 to make it unable to work normally. If the grading axle is shorter, the length of bearing frame is enough to protect the grading axle, and the bearing frame can regard as the protective sheath to use simultaneously, if the grading axle is longer, the length of bearing frame is not enough to protect the grading axle, but the isolated protective sheath of additional.
The fine material discharged from the working chamber contains air containing dust, and based on the air, the method further comprises the following steps: a pulse dust collector and a cyclone collector;
the induced draft device is connected with the discharge port sequentially through the pulse dust collector and the cyclone collector.
In the embodiment of the invention, the fine materials and the air containing dust are separated by the cyclone collector, the fine materials after the dust is separated are discharged by the cyclone collector, the air containing dust is input into the pulse dust collector, and the pulse dust collector collects the dust to obtain clean air and discharges the clean air, so that the purity of the output fine materials is ensured, and air pollution is prevented.
Fig. 2 is a flowchart of a pulverizing and classifying method according to an embodiment of the present invention.
A crushing and grading method based on the crushing and grading device shown in fig. 2 comprises the following steps:
s201, crushing materials to be crushed through the crushing assembly after entering the working bin through the feeding port;
s202, conveying the crushed materials into the grading element under the action of the gravity of the air inducing device to be graded into fine materials and coarse materials, discharging the fine materials out of the working bin from the discharge port, and returning the coarse materials to the crushing unit to be continuously crushed.
According to the crushing and grading method provided by the embodiment of the invention, the air inducing device, the crushing motor and the grading motor are started, the crushing motor drives the crushing assembly to rotate through the main shaft, and the grading motor drives the grading element to rotate through the grading shaft. And the materials to be crushed enter the working bin through the feeding port and then are crushed through the crushing assembly, the crushed materials are conveyed into the classifying element under the action of the gravity of the air inducing device to be classified into fine materials and coarse materials, the fine materials are discharged from the discharging port of the working bin, and the coarse materials are returned to the crushing unit to be continuously crushed. According to the crushing and grading method provided by the embodiment of the invention, crushing and grading are carried out in the working bin, and material loss in the transmission process from the crushing unit to the grading unit can be prevented by using a crushing and grading device with a smaller volume.
In a preferred embodiment, the fine material discharged from the working chamber contains air containing dust,
then, the method further comprises:
and the fine materials discharged from the working bin are input into the cyclone collector, the cyclone collector separates the fine materials from air containing dust, the fine materials from which the dust is separated are discharged from the cyclone collector, the air containing the dust is input into the pulse dust collector, and the pulse dust collector collects the dust to obtain clean air and discharges the clean air.
In the embodiment of the invention, the fine material and the air containing dust are separated by the cyclone collector, the fine material after the dust is separated is discharged by the cyclone collector, the air containing dust is input into the pulse dust collector, and the pulse dust collector collects the dust to obtain clean air and discharges the clean air, so that the purity of the output fine material is ensured, and air pollution is prevented.
It should be noted that, in the respective components of the apparatus of the present invention, the components therein are logically divided according to the functions to be implemented, but the present invention is not limited thereto, and the respective components may be re-divided or combined as needed, for example, some components may be combined into a single component, or some components may be further decomposed into more sub-components.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware.
The above embodiments are only suitable for illustrating the present invention and not limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention, and the scope of the present invention should be defined by the claims.
Claims (5)
1. A crushing and grading device is characterized by comprising a working bin, a crushing unit and a grading unit;
the crushing unit comprises a crushing motor, a main shaft and a crushing assembly, the crushing motor is connected with the main shaft, at least part of the main shaft is positioned in the working bin, the crushing assembly is sleeved on the main shaft positioned in the working bin, and a feeding port is formed in the position, corresponding to the crushing assembly, of the working bin;
the grading unit comprises an air inducing device, a grading motor, a grading shaft and a grading element, the grading motor is connected with the grading shaft, the grading element is installed on the grading shaft and is positioned in the working bin, a discharge hole is formed in the position, corresponding to the grading element, of the working bin, and the air inducing device is connected with the discharge hole;
the crushing assembly comprises a turntable and at least two crushing plates, the turntable is sleeved on the main shaft, the at least two crushing plates are arranged on the turntable and are distributed on the turntable in the circumferential direction,
an annular lining plate is arranged between the inner wall of the working bin and the rotary table, the rotary table and the lining plate are in clearance fit, the bottommost height of the grading element is lower than the topmost height of the lining plate, the main shaft is vertically arranged, the grading shaft is transversely arranged,
the crushing assembly is characterized in that a rotating surface formed by the crushing assembly is perpendicular to a rotating surface formed by the grading element, the grading element is a grading wheel, the projection of the grading element in the vertical direction is positioned in the lining plate, and the height of the axis of the grading shaft is greater than the highest height of the crushing assembly.
2. The crushing and grading device according to claim 1, wherein the inner wall of the working bin is provided with a circular arc surface corresponding to the rotary disc, and the rotary disc and the circular arc surface are in clearance fit.
3. The crushing and grading device according to claim 1, wherein the grading shaft is located in a material outlet sleeve, the discharge port of the working bin is communicated with the inside of the material outlet sleeve, a material outlet is provided in the material outlet sleeve located outside the working bin, and the air inducing device is connected with the material outlet.
4. The crushing and classifying device according to claim 1, further comprising: a pulse dust collector and a cyclone collector; the induced draft device is connected with the discharge port sequentially through the pulse dust collector and the cyclone collector.
5. A pulverization classification method based on the pulverization classification apparatus as claimed in any one of claims 1 to 4, comprising:
after materials to be crushed enter the working bin through the feeding port, the materials are crushed through the crushing assembly;
the crushed materials are conveyed into the grading element under the action of the gravity of the air inducing device to be graded into fine materials and coarse materials, the fine materials are discharged out of the working bin from the discharge port under the action of the gravity of the air inducing device, and the coarse materials fall back to the crushing unit to be continuously crushed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011447030.9A CN112547270B (en) | 2020-12-08 | 2020-12-08 | Crushing and grading device and crushing and grading method |
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| CN202011447030.9A CN112547270B (en) | 2020-12-08 | 2020-12-08 | Crushing and grading device and crushing and grading method |
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| CN112547270A CN112547270A (en) | 2021-03-26 |
| CN112547270B true CN112547270B (en) | 2022-09-20 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103341382A (en) * | 2013-07-22 | 2013-10-09 | 四川坤森微纳科技股份有限公司 | Ultrafine grinding system |
| CN209531095U (en) * | 2018-12-28 | 2019-10-25 | 四川金核高分子材料有限公司 | A kind of powder airslide disintegrating mill |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011067766A (en) * | 2009-09-25 | 2011-04-07 | Ricoh Co Ltd | Method for manufacturing powder and fluidized bed-type crusher |
| CN202270566U (en) * | 2011-09-30 | 2012-06-13 | 江阴市龙昌机械制造有限公司 | Belt air type superfine disintegrator |
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- 2020-12-08 CN CN202011447030.9A patent/CN112547270B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103341382A (en) * | 2013-07-22 | 2013-10-09 | 四川坤森微纳科技股份有限公司 | Ultrafine grinding system |
| CN209531095U (en) * | 2018-12-28 | 2019-10-25 | 四川金核高分子材料有限公司 | A kind of powder airslide disintegrating mill |
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Address after: 510651 No. 363, Changxin Road, Guangzhou, Guangdong, Tianhe District Patentee after: Institute of resource utilization and rare earth development, Guangdong Academy of Sciences Address before: 510651 Courtyard No. 363 Changxing Road, Tianhe District, Guangzhou City, Guangdong Province Patentee before: Institute of resources comprehensive utilization, Guangdong Academy of Sciences |