CN113182048A - Supersonic speed jet milling device of three-dimensional rotary jet - Google Patents
Supersonic speed jet milling device of three-dimensional rotary jet Download PDFInfo
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- CN113182048A CN113182048A CN202110488721.1A CN202110488721A CN113182048A CN 113182048 A CN113182048 A CN 113182048A CN 202110488721 A CN202110488721 A CN 202110488721A CN 113182048 A CN113182048 A CN 113182048A
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- rotary
- crushing chamber
- supersonic
- air bag
- dimensional
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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
- B02C19/06—Jet mills
- B02C19/061—Jet mills of the cylindrical type
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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
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- Food Science & Technology (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention discloses a three-dimensional rotary jet supersonic speed airflow crushing device, belonging to a solid material crushing device. The device comprises a base, a rotary crushing chamber outer shell positioned above the base, a column-shaped rotary air bag, a rotary crushing chamber positioned in an inner cavity of the rotary crushing chamber outer shell and a storage bin. The device can ensure that the position of the supersonic speed spray pipe in the crushing chamber is designed into a three-dimensional design from a plane, further ensure that most of materials in the space of the crushing chamber are in a spray pipe opening of supersonic speed airflow, and the material jet flow reaches a high kinetic energy state in the shortest time and focuses at a cross point from the space. The best effect is achieved by each collision between particles, and the production efficiency is effectively improved.
Description
Technical Field
The invention relates to a solid material crushing device, in particular to a three-dimensional rotary jet supersonic speed airflow crushing device.
Background
The process of ultrafine grinding of powder is actually a process in which each particle in macroscopic powder is crushed, broken, reduced and refined under the action of external force, thereby causing the performance index of the whole powder to change.
The method is characterized in that airflow is used as power, and particles move at high speed and collide under the drive of high-speed airflow reversely sprayed to the powder, so that the powder is crushed. Although the method is convenient and easy to implement and has wider application range, the new problems of the material in the micronization process are still met, namely: due to the negative pressure effect of the high-speed airflow, the motion track of the mixed material particles entering the crushing chamber firstly moves towards the airflow jet orifice and then is jetted forwards along with the motion direction of the high-speed airflow, so that the powder particles which are closer to the airflow jet orifice have shorter time for reaching high-speed motion from the original speed, and the powder particles have longer time for reaching high-speed motion from the original speed. In the whole process of crushing, how to enable most particles in the powder to reach a high-kinetic-energy state in the shortest distance, and the best effect can be achieved by each collision of the particles.
At present, the reverse collision type fluidized bed jet mill classifier is generally composed of a stock bin, a feeding system, a supersonic jet pipe, a crushing chamber, a classifying chamber, a discharge port and the like. For comminution, the material is fed from a hopper into a comminution chamber into which the gas stream enters through opposed supersonic nozzles fixed in a plane. The material is accelerated by the jet pipe airflow and collides at the intersection point of the high-speed jet flow to realize crushing.
It can be seen from the above structure and working principle that when the material particles to be crushed enter the crushing chamber, some particles fall near the outlet of the spray pipe, and some particles have a certain distance (up, down, left and right) from the spray pipe. Under the first condition, the particles are driven by high-speed airflow sprayed out of the spray pipe quickly and move to the intersection point of the jet flow along with the airflow, and the powder has certain energy impact force after accelerated movement and collides with materials moving in opposite directions to realize crushing. In the second case, the material particles move first towards the nozzle orifice and then towards the intersection of the jets due to the negative pressure created by the high velocity gas stream. The second case tends to extend particle movement time and distance. The crushing efficiency is affected. For the high-energy-consumption equipment of jet milling, on the premise of equal energy consumption, more particles can enter a particle jet intersection point in the shortest distance, and the yield of the milled product is improved. Becomes the key to solving this problem.
Disclosure of Invention
In order to solve the problems in the prior art, the supersonic nozzle in the crushing chamber is designed into a three-dimensional design from a plane, most of materials in the space of the crushing chamber are in a nozzle orifice of supersonic airflow, and the material jet flow reaches a high kinetic energy state in the shortest time and focuses at a cross point from the space. The best effect is achieved by each collision between particles, and the production efficiency is effectively improved.
The purpose of the invention can be realized by the following technical scheme:
a three-dimensional rotary jet supersonic speed airflow crushing device comprises a base, a rotary crushing chamber outer shell positioned above the base, a column-shaped rotary air bag, a rotary crushing chamber positioned in an inner cavity of the rotary crushing chamber outer shell, and a storage bin; the lower part of the columnar rotary air bag is positioned in the inner cavity of the base, the upper part of the columnar rotary air bag sequentially penetrates through the bottom of the outer shell of the rotary crushing chamber and the bottom of the rotary crushing chamber, at least 2 air bag air outlets are arranged on the side surface of the columnar rotary air bag, and 1 air bag air outlet is also arranged at the top of the columnar rotary air bag;
the rotary crushing chamber is connected with the feed bin, the side wall of the rotary crushing chamber is provided with at least 2 supersonic nozzle seats at the same height and at equal intervals, and the top air pocket air outlet of the columnar rotary air pocket is provided with 1 supersonic nozzle seat; one end of the supersonic nozzle base on the side wall extends into the crushing chamber, and the other end is connected with the side air pocket air outlet of the columnar rotary air pocket.
The technical scheme of the invention is as follows: the side gas bag gas outlet of the columnar rotary gas bag is connected with the supersonic speed nozzle base sequentially through a gas bag gas distribution pipe cap nut, an air flow gas distribution hard pipe and a nozzle base gas inlet cap nut, and the nozzle base cap nut is arranged at the gas outlet of the supersonic speed nozzle base.
The technical scheme of the invention is as follows: the supersonic nozzle base on the side wall is fixed by a three-dimensional nozzle base positioning ring which is fixedly arranged outside the rotary crushing chamber.
The technical scheme of the invention is as follows: the three-dimensional nozzle base positioning ring is in a frustum shape, positioning holes are formed in the conical surface of the frustum shape at intervals of 120 degrees along the circumferential direction, and the supersonic nozzle base on the side wall penetrates through the positioning holes to enter the rotary crushing chamber.
The technical scheme of the invention is as follows: an air outlet at the top of the column-shaped rotary air bag is provided with an air bag upper locking nut.
The technical scheme of the invention is as follows: the compressed air inlet pipe is connected with the column-shaped rotary air bag through the high-pressure air rotary joint and the coupler in sequence; the belt pulley at the lower part of the columnar rotary air bag is connected with the motor through a belt.
The technical scheme of the invention is as follows: the bottom of the rotary crushing chamber is provided with two rotary crushing chamber feed openings which are controlled by a feed butterfly valve.
The technical scheme of the invention is as follows: the column-shaped rotary air bag is connected with the bearing seat on the base through a bearing.
The technical scheme of the invention is as follows: the bearing seat is fixedly connected with a flange D on the base, and the bottom of the rotary crushing outer shell is fixedly connected with the flange D through a flange C; the bottom outside of feed bin is equipped with flange A, and flange A passes through flange B fixed connection on rotatory crushing room shell body upper portion.
The technical scheme of the invention is as follows: the side wall of the rotary crushing chamber is provided with 3 supersonic nozzle seats at the same height at equal intervals, and the included angles among the 4 supersonic nozzle seats are all 120 degrees.
The technical scheme of the invention is as follows: the rotary crushing chamber is characterized in that a rotary crushing chamber outer shell is fixedly connected to the base through a fastener, and a rotary crushing chamber with an opening at the upper part is arranged in the rotary crushing chamber outer shell.
The technical scheme of the invention is as follows: the feed bin is cylindrical upper and lower open-ended casing, the top of feed bin is equipped with the feed inlet, still be equipped with the observation hole on one side bulkhead of feed bin.
The technical scheme of the invention is as follows: the base is rectangular, the upper portion of the base is welded and fixed with the bearing seat through a connecting piece, the middle portion of the base is fixedly provided with a motor base, and a motor connected with the column-shaped rotary air bag is arranged on the motor base.
The technical scheme of the invention is as follows: the bottom four corners position of base is equipped with fixed foot, still install the gyro wheel between the fixed foot.
The technical scheme of the invention is as follows: the bottom center of the crushing chamber is provided with an interface, and the interface is connected with a column-shaped rotary air bag through a locking nut on the upper part of the air bag.
Furthermore, the side wall and the bottom of the columnar rotary air bag are provided with air bag air outlets matched with the air inlets of the nozzle seat. The invention has the beneficial effects that:
the invention designs two groups of opposite plane fixed positions of supersonic speed spray pipes in the jet mill into three-dimensional positions with the included angle of four spray pipes of 120 degrees, and adds a set of rotating device, so that the supersonic speed spray pipes in the crushing chamber can rotate, and further the spray pipes generate high-speed jet flow and also rotate, thereby effectively solving the problem of the movement distance of powder particles in the crushing chamber, namely, in the whole crushing process, no matter where the powder entering the crushing chamber from a stock bin falls, the high-speed jet flow rotates, so that most particles in the powder are always in the nearest distance from a jet orifice of the spray pipes, thereby the material reaches a high-kinetic energy state in the shortest time, each collision between the particles achieves the best effect, and the capacity of superfine crushing is effectively improved. Due to the rotation of the high-speed jet, the distance and time for the material to move to the edge of the high-speed jet are shortened. So that the time for the material to obtain high kinetic energy is accelerated. The time for crushing is saved as a whole. The grinding of the notoginseng drugs from this example is as follows: the crushing granularity is 800 meshes, and the capacity of the crusher of the embodiment is improved by 65 percent compared with that of the traditional jet mill on the premise of the same energy consumption.
Drawings
The invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic view of the overall structure of the present invention.
Wherein: 1-1 is a compressed air inlet pipe, 1-2 is a base, 1-3 is a high-pressure air rotary joint, 1-4 is a column-shaped rotary air bag, 1-5 is a nozzle seat air inlet cover nut, 1-6 is a supersonic nozzle seat, 1-7 is a nozzle seat cover nut, 1-8 is a rotary crushing chamber, 1-9 is a motor, 1-10 is a coupler, 1-11 is a bearing seat, 1-12 is a flange D, 1-13 is a flange C, 1-14 is a bearing, 1-15 is an air bag air distribution pipe cover nut, 1-16 is an air flow air distribution hard pipe, 1-17 is an air bag air outlet, 1-18 is a rotary crushing chamber shell, 1-19 is a flange B, 1-20 is a flange A, 1-21 is an observation port, 1-22 is a storage bin, and 1-23 is a feed inlet.
FIG. 2 includes FIGS. 2-1,2-2,2-3 and 2-4, wherein FIG. 2-1 is a top view of the rotating pulverizing chamber; FIG. 2-2 is a view A-A of FIG. 2-1; FIG. 2-3 is a view B-B of FIG. 2-2; FIGS. 2-4 are front views of three-dimensional nozzle base retaining rings; FIGS. 2-5 are top views of three-dimensional nozzle base retaining rings.
Wherein: 2-1 is a three-dimensional nozzle base positioning ring, and 2-2 is a lower outlet of the rotary crushing chamber.
Fig. 3 includes fig. 3-1 and 3-2, where fig. 3-1 is a cross-sectional view of a cylindrical rotating air bag and fig. 3-2 is a top view of the cylindrical rotating air bag.
Wherein: 3-1 is an air pocket bearing seat lower end cover, 3-2 is a belt pulley, 3-3 is an air pocket upper locking nut, 3-4 is an air pocket bearing seat upper end cover, and 3-5 is an air pocket bearing seat cover plate.
Fig. 4 includes fig. 4-1 and 4-2, wherein fig. 4-1 is a schematic diagram of a structure of the silo, and fig. 4-2 is a top view of the structure of the silo.
Fig. 5 is a schematic view of a structure including a rotary pulverizing chamber housing and a plan view of the rotary pulverizing chamber housing.
Fig. 6 is a schematic view of a base structure.
Wherein: 6-1 is an adjustable fixed foot, 6-2 is a base caster wheel, and 6-3 is a motor base.
Detailed Description
The invention is further illustrated by the following examples, without limiting the scope of the invention:
referring to fig. 1-6, a supersonic jet mill with three-dimensional rotary jet comprises a base 1-2, a rotary milling chamber outer shell 1-18 located above the base 1-2, a column-shaped rotary air bag 1-4, a rotary milling chamber 1-8 located in the inner cavity of the rotary milling chamber outer shell 1-18, and a silo 1-22; the lower part of the columnar rotary air bag 1-4 is positioned in the inner cavity of the base 1-2, the upper part of the columnar rotary air bag 1-4 sequentially penetrates through the bottom of the rotary crushing chamber outer shell 1-18 and the bottom of the rotary crushing chamber 1-8, the side surface of the columnar rotary air bag 1-4 is at least provided with 2 air bag air outlets 1-17, and the top part of the columnar rotary air bag is also provided with 1 air bag air outlet 1-17;
the rotary crushing chamber 1-8 is connected with the storage bin 1-22, the side wall of the rotary crushing chamber 1-8 is provided with at least 2 supersonic nozzle seats 1-6 at the same height and at equal intervals, and the top gas bag gas outlet of the columnar rotary gas bag 1-4 is provided with 1 supersonic nozzle seat 1-6; one end of the supersonic nozzle seat 1-6 on the side wall extends into the crushing chamber, and the other end is connected with the side air pocket air outlet of the columnar rotary air pocket 1-4.
The side gas bag gas outlets of the columnar rotary gas bags 1-4 are connected with supersonic nozzle bases 1-6 sequentially through gas bag gas distribution pipe cap nuts 1-15, gas flow gas distribution hard pipes 1-16 and nozzle base gas inlet cap nuts 1-5, and nozzle base cap nuts 1-7 are arranged at the gas outlets of the supersonic nozzle bases 1-6.
The supersonic nozzle base 1-6 on the side wall is fixed by a three-dimensional nozzle base positioning ring 2-1 which is fixedly arranged outside the rotary crushing chamber.
The three-dimensional nozzle base positioning ring 2-1 is in a frustum shape, positioning holes are formed in the conical surface of the frustum shape at intervals of 120 degrees along the circumferential direction, and the supersonic nozzle base 1-6 on the side wall penetrates through the positioning holes to enter the rotary crushing chamber 1-8.
And air outlets at the tops of the columnar rotary air bags 1-4 are provided with air bag upper locking nuts 3-3.
A compressed air inlet pipe 1-1 is connected with a column-shaped rotary air bag 1-4 sequentially through a high-pressure air rotary joint 1-3 and a coupler 1-10; the belt pulley 3-2 at the lower part of the column-shaped rotary air bag 1-4 is connected with the motor 1-9 through a belt.
Two rotary crushing chamber feed openings 2-2 are arranged at the bottom of the rotary crushing chamber 2-2, and the rotary crushing chamber feed openings 2-2 are controlled by a feed butterfly valve.
The column-shaped rotary air bag 1-4 is connected with a bearing seat 1-11 on the base through a bearing 1-14. And the bottom of the bearing 1-14 is provided with an air pocket bearing seat lower end cover 3-1, and the top is provided with an air pocket bearing seat cover plate 3-5.
The bearing seats 1-11 are fixedly connected with a flange D1-12 on the base, and the bottoms of the rotary crushing outer shells 1-18 are fixedly connected with a flange D1-12 through a flange C1-13; the outer side of the bottom of the silo 1-22 is provided with a flange A1-20, and the flange A1-20 is fixedly connected with a flange B1-19 at the upper part of the outer shell 1-18 of the rotary crushing chamber. Said
The side walls of the rotary crushing chambers 1 to 8 are at the same height and at equal intervals, the included angles between at least 3 supersonic nozzle bases 1 to 6 and 4 supersonic nozzle bases 1 to 6 are all 120 degrees.
As shown in FIG. 6, a base shell of the pulverizer of the embodiment is a square shell, and flanges D1-12 are welded with bearing seats 1-11; the middle part of the base shell 6-4 is welded with a motor base 6-3, a motor 1-9 is installed, and the bottom of the base shell is provided with an adjustable fixed foot 6-1 and a base caster 6-2.
When the rotary crushing chamber is in work, the base 1-2, the rotary crushing chamber outer shell 1-20 and the bin shell 1-22 are in a fixed static state. Compressed air enters the high-pressure air rotary joint 1-3 through the air inlet pipe 1-1 and then enters the column-shaped rotary air bag 1-4. As the rotary crushing chamber 1-8 and the column-shaped rotary air bag 1-4 are connected into a whole, when the motor drives the column-shaped rotary air bag 1-4 to rotate, the rotary crushing chamber and the supersonic speed spray pipe also synchronously rotate. When the material enters the rotary crushing chamber 1-8 from the bin shell 4-2, the material entering the space of the crushing chamber enters the high-speed jet flow acceleration area in the shortest distance along with the rotation of the high-speed jet flow. The material moves at high speed under the drive of high-speed jet flow, and collides at the jet flow intersection to realize superfine grinding.
Practice proves that the pulverizer of the embodiment has the following advantages:
due to the rotation of the high-speed jet, the distance and time for the material in the space of the crushing chamber to move to the edge of the high-speed jet are shortened. So that the time for the material to obtain high kinetic energy is accelerated. The time for crushing is saved as a whole. The grinding of the notoginseng drugs from this example is as follows: the crushing granularity is 800 meshes, and the capacity of the crusher of the embodiment is improved by 65 percent compared with that of the traditional jet mill on the premise of the same energy consumption.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (10)
1. A supersonic speed jet mill device of three-dimensional rotatory injection which characterized in that: the device comprises a base (1-2), a rotary crushing chamber outer shell (1-18) positioned above the base (1-2), a column-shaped rotary air bag (1-4), a rotary crushing chamber (1-8) positioned in an inner cavity of the rotary crushing chamber outer shell (1-18) and a storage bin (1-22); the lower part of the cylindrical rotary air bag (1-4) is positioned in the inner cavity of the base (1-2), the upper part of the cylindrical rotary air bag (1-4) sequentially penetrates through the bottom of the rotary crushing chamber outer shell (1-18) and the bottom of the rotary crushing chamber (1-8), at least 2 air bag air outlets are arranged on the side surface of the cylindrical rotary air bag (1-4), and 1 air bag air outlet is also arranged at the top of the cylindrical rotary air bag;
the rotary crushing chamber (1-8) is connected with the storage bin (1-22), the side wall of the rotary crushing chamber (1-8) is provided with at least 2 supersonic nozzle seats (1-6) at the same height at equal intervals, and the top gas bag gas outlet of the columnar rotary gas bag (1-4) is provided with 1 supersonic nozzle seat (1-6); one end of the supersonic nozzle seat (1-6) on the side wall extends into the crushing chamber, and the other end is connected with the side air pocket air outlet of the columnar rotary air pocket (1-4).
2. The supersonic jet mill of three-dimensional rotary jetting of claim 1, characterized in that: the side gas bag gas outlet of the columnar rotary gas bag (1-4) is connected with the supersonic speed nozzle base (1-6) sequentially through a gas bag gas distribution pipe cap nut (1-15), an air flow gas distribution hard pipe (1-16) and a nozzle base gas inlet cap nut (1-5), and the nozzle base cap nuts (1-7) are arranged at the gas outlet of the supersonic speed nozzle base (1-6).
3. The supersonic jet mill of three-dimensional rotary jetting of claim 1, characterized in that: the supersonic nozzle base (1-6) on the side wall is fixed by a three-dimensional nozzle base positioning ring (2-1) which is fixedly arranged outside the rotary crushing chamber.
4. The supersonic jet mill of three-dimensional rotary jetting of claim 3, characterized in that: the three-dimensional nozzle seat positioning ring (2-1) is in a frustum shape, positioning holes are formed in the conical surface of the frustum shape at intervals of 120 degrees along the circumferential direction, and the supersonic nozzle seat (1-6) on the side wall penetrates through the positioning holes to enter the rotary crushing chamber (1-8).
5. The supersonic jet mill of three-dimensional rotary jetting of claim 1, characterized in that: the air outlet at the top of the column-shaped rotary air bag (1-4) is provided with an air bag upper locking nut (3-3).
6. The supersonic jet mill of three-dimensional rotary jetting of claim 1, characterized in that: a compressed air inlet pipe (1-1) is connected with a column type rotary air bag (1-4) sequentially through a high-pressure air rotary joint (1-3) and a coupler (1-10); the belt pulley (3-2) at the lower part of the column-shaped rotary air bag (1-4) is connected with the motor (1-9) through a belt.
7. The supersonic jet mill of three-dimensional rotary jetting of claim 1, characterized in that: two rotary crushing chamber feed openings (2-2) are arranged at the bottoms of the rotary crushing chambers (1-8), and the rotary crushing chamber feed openings (2-2) are controlled by a lower discharge butterfly valve.
8. The supersonic jet mill of three-dimensional rotary jetting of claim 1, characterized in that: the column-shaped rotary air bag (1-4) is connected with a bearing seat (1-11) on the base through a bearing (1-14).
9. The supersonic jet mill of three-dimensional rotary jetting of claim 1, characterized in that: the bearing seats (1-11) are fixedly connected with flanges D (1-12) on the base, and the bottoms of the rotary crushing outer shells (1-18) are fixedly connected with the flanges D (1-12) through flanges C (1-13); the outer sides of the bottoms of the bins (1-22) are provided with flanges A (1-20), and the flanges A (1-20) are fixedly connected through flanges B (1-19) at the upper parts of the rotary crushing chamber outer shells (1-18).
10. The supersonic jet mill of three-dimensional rotary jetting of claim 1, characterized in that: the side wall of the rotary crushing chamber (1-8) is provided with 3 supersonic nozzle seats (1-6) at the same height at equal intervals, and the included angles among the 4 supersonic nozzle seats (1-6) are all 120 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110488721.1A CN113182048A (en) | 2021-04-30 | 2021-04-30 | Supersonic speed jet milling device of three-dimensional rotary jet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110488721.1A CN113182048A (en) | 2021-04-30 | 2021-04-30 | Supersonic speed jet milling device of three-dimensional rotary jet |
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| Publication Number | Publication Date |
|---|---|
| CN113182048A true CN113182048A (en) | 2021-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110488721.1A Withdrawn CN113182048A (en) | 2021-04-30 | 2021-04-30 | Supersonic speed jet milling device of three-dimensional rotary jet |
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| CN (1) | CN113182048A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115090394A (en) * | 2022-06-23 | 2022-09-23 | 江西升华新材料有限公司 | Synthesis equipment and method of lithium iron phosphate anode material |
-
2021
- 2021-04-30 CN CN202110488721.1A patent/CN113182048A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115090394A (en) * | 2022-06-23 | 2022-09-23 | 江西升华新材料有限公司 | Synthesis equipment and method of lithium iron phosphate anode material |
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Application publication date: 20210730 |
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