CN108906296B - Superfine powder processing technology and manufacturing equipment thereof - Google Patents
Superfine powder processing technology and manufacturing equipment thereof Download PDFInfo
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- CN108906296B CN108906296B CN201810695475.5A CN201810695475A CN108906296B CN 108906296 B CN108906296 B CN 108906296B CN 201810695475 A CN201810695475 A CN 201810695475A CN 108906296 B CN108906296 B CN 108906296B
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- 238000009700 powder processing Methods 0.000 title abstract description 12
- 238000005516 engineering process Methods 0.000 title abstract description 7
- 238000004519 manufacturing process Methods 0.000 title description 2
- 239000000843 powder Substances 0.000 claims abstract description 45
- 238000000034 method Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 127
- 230000000903 blocking effect Effects 0.000 claims description 30
- 239000002245 particle Substances 0.000 claims description 19
- 230000032258 transport Effects 0.000 claims description 17
- 238000007599 discharging Methods 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 12
- 239000007921 spray Substances 0.000 claims description 12
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 9
- 238000010298 pulverizing process Methods 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 3
- 238000003801 milling Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 230000002633 protecting effect Effects 0.000 claims description 2
- 241001391944 Commicarpus scandens Species 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 239000000047 product Substances 0.000 description 7
- 238000009826 distribution Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000005411 Van der Waals force Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
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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
- B02C21/00—Disintegrating plant with or without drying of the material
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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
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
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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
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/28—Shape or construction of beater elements
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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
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/282—Shape or inner surface of mill-housings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/286—Feeding or discharge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/06—Jet mills
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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
- B02C19/18—Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
-
- 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
- B02C23/30—Passing gas through crushing or disintegrating zone the applied gas acting to effect material separation
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/286—Feeding or discharge
- B02C2013/28609—Discharge means
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Disintegrating Or Milling (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
The invention discloses a superfine powder processing device and a processing technology, wherein the processing device comprises a roller crusher, a transport pump, an airflow crusher and a classifier; the treatment process comprises a primary crushing step, a fine crushing step and a grading step. Compared with the prior art, the treatment equipment can produce the superfine powder meeting the requirements, and the powder blocks are easy to break up, thereby being beneficial to grading the superfine powder; the treatment process can produce the superfine powder meeting the requirements.
Description
Technical Field
The invention relates to an ultrafine powder processing device and an ultrafine powder processing technology.
Background
The existing powder processing field adopts a mechanical processing method, the obtained powder has a wide particle size distribution range, and special powder grading equipment is needed to carry out grading treatment on the processed powder. Because the superfine powder has large specific surface area and high surface energy and surface activity, the superfine powder is easy to agglomerate and adsorb on the surface of a solid and is difficult to disperse, thereby bringing great difficulty to grading treatment. A common superfine powder classifier comprises a cylinder, a feeding pipe and a discharging pipe are connected to the cylinder, a classifying impeller is arranged in the cylinder at the port of the feeding pipe, most of the classifying impellers are cylindrical, shutter-shaped classifying blades are fixedly arranged on the classifying impeller, the superfine powder entering from the feeding pipe is subjected to centrifugal force when encountering the classifying blades, and the superfine powder with different particle sizes is dispersed under the centrifugal action, so that the classifying separation of the superfine powder is realized. The classifier of this structure has disadvantages in that, since the processed ultrafine powder is easily agglomerated under van der waals force, thermal diffusion and electrostatic force, the agglomerated powder is included in the ultrafine powder introduced from the inlet pipe, the agglomerated powder is not easily broken up when encountering the classifying blade of the structure, and is easily agglomerated again under the centrifugal force, thereby being disadvantageous to the completion of classification and separation, and the efficiency is low, the throughput is small, and the particle size distribution of the obtained classified powder is not uniform.
The existing powder processing field adopts a mechanical processing method, the obtained powder has a wide particle size distribution range, and special powder grading equipment is needed to carry out grading treatment on the processed powder. Because the superfine powder has large specific surface area and high surface energy and surface activity, the superfine powder is easy to agglomerate and adsorb on the surface of a solid and is difficult to disperse, thereby bringing great difficulty to grading treatment.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the ultrafine powder processing equipment and the processing technology, the processing equipment can produce the ultrafine powder meeting the requirements, and the powder blocks are easy to break up, thus being beneficial to grading the ultrafine powder; the treatment process can produce the superfine powder meeting the requirements.
In order to solve the technical problem, the invention is solved by the following technical scheme: a superfine powder processing device comprises a roller crusher, a transportation pump, an airflow crusher and a classifier; the roller crusher is characterized in that a filter plate is arranged in the roller crusher, a filter screen is arranged on the filter plate, the filter plate divides an inner cavity of the roller crusher into an upper working cavity and a lower collecting cavity, a crushing roller is arranged in the working cavity, a plurality of solid balls are arranged in the crushing roller and used for crushing materials, the crushing roller is provided with an opening, the opening is provided with a door plate, a spring bin is arranged on one side wall of the roller crusher, a spring is arranged in the spring bin and acts on one end part of the filter plate, a vibration rod is arranged on the end surface of one side of the filter plate, which corresponds to the filter plate, the vibration rod is connected with a vibration machine and transmits vibration to the filter plate, a discharge pipeline is arranged in; the top of the transport pump is provided with a feed hopper, the side wall of the transport pump is provided with a discharge part, the discharge part is provided with a first discharge pipe and a second discharge pipe, the first discharge pipe is connected with the jet mill, and the end part of the first discharge pipe extends into the jet mill; the jet mill lateral wall is provided with a first jet pipe and a second jet pipe, the top of the jet mill is provided with a third jet pipe, the central axes of the first jet pipe, the second jet pipe and the third jet pipe are intersected at a point, the second discharge pipe is connected with a first high-pressure pump and a second high-pressure pump, the output end of the first high-pressure pump is connected with the first jet pipe, the output end of the second high-pressure pump is connected with the second jet pipe, the third jet pipe is connected with a third high-pressure pump, the bottom of the jet mill is provided with a discharge pipe, the discharge pipe is connected with a material transfer part, the material transfer part is connected with the first high-pressure pump, the second high-pressure pump and the third high-pressure pump, the material transfer part is also connected with an intermediate product bin, the jet mill is internally provided with a flow blocking part, the flow blocking part is provided with a drainage inclined plane, and a curved drainage arc-shaped arc surface is arranged between the drainage inclined plane and the top of, the end part of the drainage cambered surface is connected with the third air jet pipe, an upper ultrasonic vibration part and a lower ultrasonic vibration part are annularly arranged on the outer wall of the jet mill, each ultrasonic vibration part is provided with five ultrasonic generators, the outer wall of the jet mill is provided with a cooling bin, the cooling bin controls the temperature of the jet mill to prevent the jet mill from being damaged due to high temperature, the cooling bin comprises two water inlet pipes positioned at the bottom and two water outlet pipes positioned at the top, and cooling water is filled in the cooling bin in a flowing mode; the middle finished product bin is connected with a feeding pipe, the feeding pipe is inserted into the grader, the grader comprises a barrel, the bottom of the barrel is connected with a lower discharging pipe, a grading impeller driven by a power device is arranged in the barrel, fan blades of the grading impeller are conical and have a conical bottom, the port of the feeding pipe faces towards the fan blades, the outer wall of the barrel is provided with a motor, the motor is provided with a driving pulley, the bottom of the grading impeller is provided with a driven pulley, the driven pulley and the driving pulley are in transmission connection through a belt, an inclined upper material blocking ring is arranged above the grading impeller in the barrel, the top of the barrel is provided with an arc-shaped dome, the end part of the upper material blocking ring is arranged upwards, a material collecting ring bin is formed between the upper material blocking ring and the inner wall of the barrel, and the material collecting ring bin is provided with an air suction pipe, the air suction pipe is connected with a leveling bin, an inclined lower material blocking ring is arranged below the upper material blocking ring, and the lower material blocking ring faces the grading impeller.
The side wall of the roller crusher is provided with a discharge hole, and a cover plate is arranged on the discharge hole.
The filter with the vibrations stick contact site is provided with the rubber pad that plays buffering guard action.
The top end of the grading impeller is provided with an elliptical end head which is used for dispersing and guiding powder falling from the upper part.
A process for producing ultrafine powder using the above-mentioned processing apparatus, the preliminary crushing step S1, the fine pulverizing step S2 and the classifying step S3; the preliminary crushing step S1 is to perform preliminary rough crushing on the raw material; the fine crushing step S2, finely crushing the preliminary crushed material subjected to S1; and a classification step S3, wherein the crushed material obtained in the step S2 is subjected to further classification treatment.
The preliminary crushing step S1 includes: s11, putting the materials into the crushing roller, closing the door plate, and starting the crushing roller to work; s12, stopping the work of the crushing roller, pouring the materials in the crushing roller onto a filter plate, starting a vibration machine to work, driving the filter plate to vibrate by a vibration rod, shaking off the materials, dropping the shaken off materials into a storage hopper below, taking out the materials which are not shaken off from a discharge port, and entering the crushing roller again to circulate S11-S12; and S13, putting the materials in the storage hopper into a feed hopper at the top of the transport pump.
The fine pulverizing step S2 includes: s21, starting a transfer pump to work, wherein the transfer pump conveys the material in the feed hopper out through a first discharge pipe and a second discharge pipe, the material conveyed out from the first discharge pipe enters the jet mill, and the material of the second discharge pipe enters a first high-pressure pump and a second high-pressure pump; s22, starting a first high-pressure pump, a second high-pressure pump and a third high-pressure pump to work, wherein the first high-pressure pump sprays materials from a first air injection pipe, the second high-pressure pump sprays the materials from a second air injection pipe, and the third high-pressure pump sprays high-pressure air from a third air injection pipe; s23, forming mixed fluid by matching the materials sprayed by the first discharge pipe and the materials sprayed by the first gas spraying pipe and the second gas spraying pipe, moving the mixed fluid towards the upper part of the inner cavity of the jet mill, and then, under the friction action of high-pressure gas sprayed by the third gas spraying pipe, enabling the four high-pressure gas flows to interact and rub with each other, so that the materials are ground; s24, starting the ultrasonic generator to work, and sending ultrasonic waves to act on the material fluid in the jet mill to help the milling work; s25, the material falling into the bottom of the inner cavity of the jet mill enters a discharge pipe, when the processing time is not finished, the discharge pipe transports the material to a first high-pressure pump, a second high-pressure pump and a third high-pressure pump to participate in the crushing work again, and if the processing time is finished, the discharge pipe transports the material to a middle finished product bin; and S26, the material in the intermediate finished product bin is transported to a grader by the logistics system for further processing.
The fine pulverizing step S3 includes: s31, starting a motor to work, and driving the grading impeller to rotate by using a belt; s32, the feeding pipe sprays the materials to be classified towards the classifying impeller, and the materials move towards the dome direction under the action of the impeller which rotates rapidly; s33, if the particles are bigger, the upward moving material falls down before contacting the dome and then falls down on the grading impeller again, and the step S32 is repeated again, if the particles are smaller, the upward moving material follows the shape of the dome and falls down on the upper material blocking ring; s34, starting the air suction pipe to work, and sucking away the superfine powder falling into the upper material blocking ring, thereby completing the classification step; s35, after the large-particle materials are subjected to the action of the classifying impeller, parts of the large-particle materials are crushed, but the separated large-particle materials still fall down and finally fall into the bottom of the classifier, then leave from the lower discharge pipe, then enter the feeding pipe again, and then are circulated again to perform the step S32.
The invention provides a technical scheme of superfine powder processing equipment and a processing technology, the processing equipment can produce superfine powder meeting requirements, and powder blocks are easy to break up, thereby being beneficial to grading of the superfine powder; the treatment process can produce the superfine powder meeting the requirements.
Drawings
Fig. 1 is a schematic view of the construction of a drum crusher of the present invention.
Fig. 2 is a schematic view of the construction of the transport pump of the present invention.
Fig. 3 is a schematic view of the structure of the jet mill of the present invention.
Fig. 4 is a schematic diagram of the structure of the classifier of the present invention.
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings: as shown in fig. 1 to 4, an ultrafine powder processing apparatus includes a roller crusher 1, a transportation pump 3, a jet mill 4, and a classifier 7; a filter plate 13 is arranged in the roller crusher 1, a filter screen is arranged on the filter plate 13, the filter plates 13 divide the inner chamber of the roller crusher 1 into an upper working chamber 11 and a lower collecting chamber 12, a crushing roller 2 is arranged in the working cavity 11, a plurality of solid balls for crushing materials are arranged in the crushing roller 2, the crushing roller 2 is provided with an opening 22, the opening 22 is provided with a door panel 23, one side wall of the roller crusher 1 is provided with a spring bin, a spring 131 is arranged in the spring bin, the spring 131 acts on one end part of the filter plate 13, the end surface of one side corresponding to the filter plate 13 is provided with a vibration rod 132, the vibration rod 132 is connected with a vibration machine and transmits vibration to the filter plate 13, the collecting cavity 12 is provided with a discharging pipeline 121, and the discharging pipeline 121 is connected with a material storage hopper 122; a feed hopper 31 is arranged at the top of the transport pump 3, a discharge part 32 is arranged on the side wall of the transport pump 3, the discharge part 32 is provided with a first discharge pipe 321 and a second discharge pipe 322, the first discharge pipe 321 is connected with the jet mill 4, and the end part of the first discharge pipe 321 extends into the jet mill 4; the jet mill 4 side wall is provided with a first jet pipe 5 and a second jet pipe 6, the jet mill 4 top is provided with a third jet pipe 42, the central axis of the first jet pipe 5, the second jet pipe 6 and the third jet pipe 42 intersects at a point, the second discharge pipe 322 is connected with a first high pressure pump and a second high pressure pump, the output end of the first high pressure pump is connected with the first jet pipe 5, the output end of the second high pressure pump is connected with the second jet pipe 6, the third jet pipe 42 is connected with a third high pressure pump, the jet mill 4 bottom is provided with a discharge pipe 41, the discharge pipe 41 is connected with a material transfer part, the material transfer part is connected with the first high pressure pump, the second high pressure pump and the third high pressure pump, the material transfer part is also connected with a middle finished product bin, the jet mill 4 is provided with a flow blocking part 45, the flow blocking part 45 is provided with a drainage inclined plane 44, an arc-shaped drainage arc surface 43 is arranged between the drainage inclined plane 44 and the top of the jet mill 4, the end part of the drainage arc surface 43 is connected with the third jet pipe 42, the outer wall of the jet mill 4 is annularly provided with an upper ultrasonic vibration part and a lower ultrasonic vibration part, each ultrasonic vibration part is provided with five ultrasonic generators 403, the outer wall of the jet mill 4 is provided with a cooling bin 8, the cooling bin 8 controls the temperature of the jet mill 4 to prevent the jet mill 4 from being damaged due to high temperature, the cooling bin 8 comprises two water inlet pipes 401 positioned at the bottom and two water outlet pipes 402 positioned at the top, and cooling water is filled in the cooling bin 8; the intermediate finished product bin is connected with a feeding pipe 72, the feeding pipe 72 is inserted into the classifier 7, the classifier 7 comprises a cylinder body, the bottom of the cylinder body is connected with a lower discharging pipe (74), a classifying impeller (8) driven by a power device is arranged in the cylinder body, fan blades 81 of the classifying impeller (8) are conical, the conical bottom of the fan blades is arranged below, the port of the feeding pipe 72 faces the fan blades 81, the outer wall of the cylinder body is provided with a motor 9, the motor 9 is provided with a driving pulley 91, the bottom of the classifying impeller 8 is provided with a driven pulley 82, the driven pulley 82 is in transmission connection with the driving pulley 91 through a belt 92, an inclined upper material blocking ring 71 is arranged above the classifying impeller (8) in the cylinder body, the top of the cylinder body is provided with an arc-shaped dome 73, the end part of the upper material blocking ring 71 is arranged upwards, and a material collecting ring bin is formed between the upper material blocking ring 71 and the inner wall, the material collecting ring bin is provided with a gas suction pipe 711, the gas suction pipe 711 is connected with a leveling bin, an inclined lower material blocking ring 712 is arranged below the upper material blocking ring 71, and the lower material blocking ring 712 faces the grading impeller (8).
The side wall of the roller crusher 1 is provided with a discharge opening 111, and a cover plate 112 is arranged on the discharge opening 111.
The contact part of the filter plate 13 and the vibration rod 132 is provided with a rubber pad 133 for buffering and protecting.
An elliptical end head 83 is arranged at the top end of the grading impeller (8), and the end head 83 is used for dispersing and guiding powder falling from the upper part.
A process for producing ultrafine powder using the above-mentioned processing apparatus, comprising a preliminary crushing step S1, a fine pulverizing step S2 and a classifying step S3; the preliminary crushing step S1 is to perform preliminary rough crushing on the raw material; the fine crushing step S2, finely crushing the preliminary crushed material subjected to S1; and a classification step S3, wherein the crushed material obtained in the step S2 is subjected to further classification treatment.
The preliminary crushing step S1 includes: s11, putting the materials into the crushing roller, closing the door plate, and starting the crushing roller to work; s12, stopping the work of the crushing roller, pouring the materials in the crushing roller onto a filter plate, starting a vibration machine to work, driving the filter plate to vibrate by a vibration rod, shaking off the materials, dropping the shaken off materials into a storage hopper below, taking out the materials which are not shaken off from a discharge port, and entering the crushing roller again to circulate S11-S12; and S13, putting the materials in the storage hopper into a feed hopper at the top of the transport pump.
The fine pulverizing step S2 includes: s21, starting a transfer pump to work, wherein the transfer pump conveys the material in the feed hopper out through a first discharge pipe and a second discharge pipe, the material conveyed out from the first discharge pipe enters the jet mill, and the material of the second discharge pipe enters a first high-pressure pump and a second high-pressure pump; s22, starting a first high-pressure pump, a second high-pressure pump and a third high-pressure pump to work, wherein the first high-pressure pump sprays materials from a first air injection pipe, the second high-pressure pump sprays the materials from a second air injection pipe, and the third high-pressure pump sprays high-pressure air from a third air injection pipe; s23, forming mixed fluid by matching the materials sprayed by the first discharge pipe and the materials sprayed by the first gas spraying pipe and the second gas spraying pipe, moving the mixed fluid towards the upper part of the inner cavity of the jet mill, and then, under the friction action of high-pressure gas sprayed by the third gas spraying pipe, enabling the four high-pressure gas flows to interact and rub with each other, so that the materials are ground; s24, starting the ultrasonic generator to work, and sending ultrasonic waves to act on the material fluid in the jet mill to help the milling work; s25, the material falling into the bottom of the inner cavity of the jet mill enters a discharge pipe, when the processing time is not finished, the discharge pipe transports the material to a first high-pressure pump, a second high-pressure pump and a third high-pressure pump to participate in the crushing work again, and if the processing time is finished, the discharge pipe transports the material to a middle finished product bin; and S26, the logistics system conveys the materials in the intermediate finished product bin to a classifier for further processing.
The fine pulverizing step S3 includes: s31, starting a motor to work, and driving the grading impeller to rotate by using a belt; s32, the feeding pipe sprays the materials to be classified towards the classifying impeller, and the materials move towards the dome direction under the action of the impeller which rotates rapidly; s33, if the particles are bigger, the upward moving material falls down before contacting the dome and then falls down on the grading impeller again, and the step S32 is repeated again, if the particles are smaller, the upward moving material follows the shape of the dome and falls down on the upper material blocking ring; s34, starting the air suction pipe to work, and sucking away the superfine powder falling into the upper material blocking ring, thereby completing the classification step; s35, after the large-particle materials are subjected to the action of the classifying impeller, parts of the large-particle materials are crushed, but the separated large-particle materials still fall down and finally fall into the bottom of the classifier, then leave from the lower discharge pipe, then enter the feeding pipe again, and then are circulated again to perform the step S32.
The invention provides a technical scheme of superfine powder processing equipment and a processing technology, the processing equipment can produce superfine powder meeting requirements, and powder blocks are easy to break up, thereby being beneficial to grading of the superfine powder; the treatment process can produce the superfine powder meeting the requirements.
Claims (8)
1. The utility model provides an ultra-fine powder treatment facility which characterized in that: comprises a roller crusher (1), a transport pump (3), an airflow crusher (4) and a classifier (7); the roller crusher is characterized in that a filter plate (13) is arranged in the roller crusher (1), a filter screen is arranged on the filter plate (13), the filter plate (13) divides an inner cavity of the roller crusher (1) into a working chamber (11) at the upper part and a collecting chamber (12) at the lower part, a crushing roller (2) is arranged in the working chamber (11), a plurality of solid balls are arranged in the crushing roller (2) and used for crushing materials, an opening (22) is formed in the crushing roller (2), a door plate (23) is arranged in the opening (22), a spring bin is arranged on one side wall of the roller crusher (1), a spring (131) is arranged in the spring bin, the spring (131) acts on one end part of the filter plate (13), a vibration rod (132) is arranged on the end face, corresponding to one side, of the filter plate (13), the vibration rod (132) is connected with a vibration machine, the collecting cavity (12) is provided with a discharge pipeline (121), and the discharge pipeline (121) is connected with a storage hopper (122); a feed hopper (31) is arranged at the top of the transport pump (3), a discharging part (32) is arranged on the side wall of the transport pump (3), a first discharging pipe (321) and a second discharging pipe (322) are arranged on the discharging part (32), the first discharging pipe (321) is connected with the jet mill (4), and the end part of the first discharging pipe extends into the jet mill (4); the jet-propelled pipe of air current rubbing crusher (4) lateral wall is provided with first jet-propelled pipe (5) and second jet-propelled pipe (6), air current rubbing crusher (4) top is provided with the jet-propelled pipe of third (42), the axis of the jet-propelled pipe of first (5), second (6) and the jet-propelled pipe of third (42) intersects in a bit, second discharging pipe (322) are connected with first high-pressure pump and second high-pressure pump, the output of first high-pressure pump is connected the jet-propelled pipe of first (5), the output of second high-pressure pump is connected the jet-propelled pipe of second (6), the jet-propelled pipe of third (42) is connected with the third high-pressure pump, air current rubbing crusher (4) bottom is provided with discharging pipe (41), discharging pipe (41) are connected with material transfer portion, material transfer portion connects first high-pressure pump, second high-pressure pump and third high-pressure pump, material transfer portion still is connected with middle finished product storehouse, a flow blocking part (45) is arranged in the jet mill (4), a drainage inclined plane (44) is arranged on the flow blocking part (45), an arc-shaped drainage cambered surface (43) is arranged between the drainage inclined surface (44) and the top of the jet mill (4), the end part of the drainage cambered surface (43) is connected with the third air injection pipe (42), the outer wall of the jet mill (4) is annularly provided with an upper ultrasonic vibration part and a lower ultrasonic vibration part, each ring of ultrasonic vibration part is provided with five ultrasonic generators (403), the outer wall of the jet mill (4) is provided with a cooling bin (8), the cooling bin (8) controls the temperature of the jet mill (4) to prevent the jet mill (4) from being damaged by high temperature, the cooling bin (8) comprises two water inlet pipes (401) positioned at the bottom and two water outlet pipes (402) positioned at the top, and cooling water is filled in the cooling bin (8) in a circulating mode; the intermediate finished product bin is connected with a feeding pipe (72), the feeding pipe (72) is inserted into the classifier (7), the classifier (7) comprises a barrel, the bottom of the barrel is connected with a lower discharging pipe (74), a classifying impeller (8) driven by a power device is arranged in the barrel, a fan blade (81) of the classifying impeller (8) is conical, the conical bottom of the fan blade is arranged below, the port of the feeding pipe (72) faces the fan blade (81), the outer wall of the barrel is provided with a motor (9), the motor (9) is provided with a driving pulley (91), the bottom of the classifying impeller (8) is provided with a driven pulley (82), the driven pulley (82) and the driving pulley (91) are in transmission connection through a belt (92), an inclined upper material blocking ring (71) is arranged above the classifying impeller (8) in the barrel, the top of the barrel is provided with an arc-shaped dome (73), the end part of the upper material blocking ring (71) is arranged upwards, a material collecting ring bin is formed between the upper material blocking ring (71) and the inner wall of the barrel, a gas suction pipe (711) is arranged on the material collecting ring bin, the gas suction pipe (711) is connected with a leveling bin, an inclined lower material blocking ring (712) is arranged below the upper material blocking ring (71), and the lower material blocking ring (712) faces the grading impeller (8).
2. The processing apparatus according to claim 1, characterized in that: the side wall of the roller crusher (1) is provided with a discharge outlet (111), and a cover plate (112) is arranged on the discharge outlet (111).
3. The processing apparatus according to claim 1, characterized in that: the contact part of the filter plate (13) and the vibration rod (132) is provided with a rubber pad (133) with a buffering and protecting effect.
4. The processing apparatus according to claim 1, characterized in that: the top end of the classifying impeller (8) is provided with an elliptical end head (83), and the end head (83) is used for dispersing and guiding powder falling from the upper part.
5. A process for producing ultrafine powder by using the processing apparatus of any one of claims 1 to 4, comprising: includes a preliminary crushing step S1, a fine pulverizing step S2 and a classifying step S3; the preliminary crushing step S1 is to perform preliminary rough crushing on the raw material; the fine crushing step S2, finely crushing the preliminary crushed material subjected to S1; and a classification step S3, wherein the crushed material obtained in the step S2 is subjected to further classification treatment.
6. The process of claim 5, wherein: the preliminary crushing step S1 includes: s11, putting the materials into the crushing roller, closing the door plate, and starting the crushing roller to work; s12, stopping the work of the crushing roller, pouring the materials in the crushing roller onto a filter plate, starting a vibration machine to work, driving the filter plate to vibrate by a vibration rod, shaking off the materials, dropping the shaken off materials into a storage hopper below, taking out the materials which are not shaken off from a discharge port, and entering the crushing roller again to circulate S11-S12; and S13, putting the materials in the storage hopper into a feed hopper at the top of the transport pump.
7. The process of claim 5, wherein: the fine pulverizing step S2 includes: s21, starting a transfer pump to work, wherein the transfer pump conveys the material in the feed hopper out through a first discharge pipe and a second discharge pipe, the material conveyed out from the first discharge pipe enters the jet mill, and the material of the second discharge pipe enters a first high-pressure pump and a second high-pressure pump; s22, starting a first high-pressure pump, a second high-pressure pump and a third high-pressure pump to work, wherein the first high-pressure pump sprays materials from a first air injection pipe, the second high-pressure pump sprays the materials from a second air injection pipe, and the third high-pressure pump sprays high-pressure air from a third air injection pipe; s23, forming mixed fluid by matching the materials sprayed by the first discharge pipe and the materials sprayed by the first gas spraying pipe and the second gas spraying pipe, moving the mixed fluid towards the upper part of the inner cavity of the jet mill, and then, under the friction action of high-pressure gas sprayed by the third gas spraying pipe, enabling the four high-pressure gas flows to interact and rub with each other, so that the materials are ground; s24, starting the ultrasonic generator to work, and sending ultrasonic waves to act on the material fluid in the jet mill to help the milling work; s25, the material falling into the bottom of the inner cavity of the jet mill enters a discharge pipe, when the processing time is not finished, the discharge pipe transports the material to a first high-pressure pump, a second high-pressure pump and a third high-pressure pump to participate in the crushing work again, and if the processing time is finished, the discharge pipe transports the material to a middle finished product bin; and S26, the material in the intermediate finished product bin is transported to a grader by the logistics system for further processing.
8. The process of claim 5, wherein: the classifying step S3 includes: s31, starting a motor to work, and driving the grading impeller to rotate by using a belt; s32, the feeding pipe sprays the materials to be classified towards the classifying impeller, and the materials move towards the dome direction under the action of the impeller which rotates rapidly; s33, if the particles are bigger, the upward moving material falls down before contacting the dome and then falls down on the grading impeller again, and the step S32 is repeated again, if the particles are smaller, the upward moving material follows the shape of the dome and falls down on the upper material blocking ring; s34, starting the air suction pipe to work, and sucking away the superfine powder falling into the upper material blocking ring, thereby completing the classification step; s35, after the large-particle materials are subjected to the action of the classifying impeller, parts of the large-particle materials are crushed, but the separated large-particle materials still fall down and finally fall into the bottom of the classifier, then leave from the lower discharge pipe, then enter the feeding pipe again, and then are circulated again to perform the step S32.
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| CN201810695475.5A CN108906296B (en) | 2018-06-29 | 2018-06-29 | Superfine powder processing technology and manufacturing equipment thereof |
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| CN201810695475.5A CN108906296B (en) | 2018-06-29 | 2018-06-29 | Superfine powder processing technology and manufacturing equipment thereof |
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| CN108906296B true CN108906296B (en) | 2020-07-28 |
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| CN201644396U (en) * | 2010-01-08 | 2010-11-24 | 潍坊学院 | Superfine powder grader |
| US9211547B2 (en) * | 2013-01-24 | 2015-12-15 | Lp Amina Llc | Classifier |
| CN205392621U (en) * | 2016-02-24 | 2016-07-27 | 赣州海创钨业有限公司 | Multistage high -efficient ball mill of ammonium paratungstate |
| CN206965886U (en) * | 2017-05-17 | 2018-02-06 | 宁波拜尔玛生物科技有限公司 | A kind of crucial nanometer device for thinning for preparing polymolecular section functional sugar |
| CN107519969A (en) * | 2017-08-04 | 2017-12-29 | 安徽吉乃尔电器科技有限公司 | A kind of rice scourer of dust removal milling |
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Effective date of registration: 20200702 Address after: Group 5, Dayan neighborhood committee, Shuijiang Town, Nanchuan District, Chongqing, 400000 Applicant after: Chongqing Youti New Material Technology Co.,Ltd. Address before: 315020, No. 105, Renmin Road, middle Horse Street, Jiangbei District, Zhejiang, Ningbo (2-28) Applicant before: NINGBO JIANGBEI SIDONG INDUSTRIAL DESIGN Co.,Ltd. |
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