CN110773428A - Powder selecting machine - Google Patents
Powder selecting machine Download PDFInfo
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- CN110773428A CN110773428A CN201911030652.9A CN201911030652A CN110773428A CN 110773428 A CN110773428 A CN 110773428A CN 201911030652 A CN201911030652 A CN 201911030652A CN 110773428 A CN110773428 A CN 110773428A
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- Prior art keywords
- powder
- cage
- rotor
- fine powder
- powder selecting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
- B07B7/086—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by the winding course of the gas stream
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
Abstract
The invention discloses a powder concentrator, which comprises a powder selecting chamber, cage-shaped rotors, a driving mechanism, a fine powder processing device and a fan, wherein the powder selecting chamber is provided with a feeding hole, an air inlet, a coarse powder outlet and a fine powder outlet; the cage type rotors are horizontally arranged in parallel in the powder selecting chamber, the rotating directions of the two adjacent cage type rotors are opposite, and the air inlet is positioned below the cage type rotors. The powder selecting indoor air flow field is uniform and stable, the material handling capacity is large, the powder selecting precision is high, and the powder selecting machine is suitable for all powder selecting machines.
Description
Technical Field
The invention belongs to the field of powder sorting equipment, and particularly relates to a powder concentrator.
Background
The powder selecting machine is widely applied to powder sorting in the fields of building materials, food, medical treatment, metallurgy, chemical industry and the like, a cage type rotor consisting of a plurality of blades is used as a core component of the powder selecting machine, negative pressure is formed in a powder selecting chamber through a fan, air enters the powder selecting machine from an air inlet and then forms rotary airflow under the driving of a high-speed cage type rotor, airflow drag force borne by fine particles entering the powder selecting chamber from a feed inlet is larger than centrifugal force, the fine particles move to the center of the rotor through the blades of the rotor, the fine particles fall into a fine powder collector by utilizing the suction force of the fan, the centrifugal force borne by the coarse particles is larger and moves to the outer side wall, and the coarse particles fall into the collector along the side.
The installation mode of a cage type rotor of a powder concentrator in the prior art can be divided into a vertical type and a horizontal type, the vertical airflow powder concentrator can carry out mass treatment on materials, but the rotating speed of the cage type rotor is low and the centrifugal strength of rotating airflow is not high due to the fact that a supporting structure of the cage type rotor is supported by a cantilever beam, and the vertical airflow powder concentrator cannot be used for large-scale processing of superfine powder; horizontal air current selection powder machine has single cage type rotor and a plurality of cage type rotor two kinds, its cage type rotor size is less and can adopt both ends to support, therefore the rotational speed of cage type rotor is higher, be used for the separation of superfine powder commonly, the powder handling capacity of single cage type rotor selection powder machine is less, the common cage type rotor quantity of a plurality of cage type rotor selection powder machines is four, be 90 degrees two bisymmetry's distribution respectively, the handling capacity increases to some extent, but no matter single cage type rotor or a plurality of cage type rotor, all there is the problem that the separation precision is low, this is because the air forms the air current around vertical direction rotation after getting into along the tangential level, and horizontal rotor drives the air current that the air formation revolved around the horizontal direction, these two kinds of rotatory air current interact, disturb, cause the air current movement route in the selection powder machine to be disorderly and unstable, thereby the classification precision of granule has been influenced.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide a powder concentrator so as to achieve the purpose of enabling the airflow in the powder concentrator to be uniform and stable and further improving the sorting precision.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a powder concentrator comprises a powder selecting chamber provided with a feeding hole, an air inlet, a coarse powder outlet and a fine powder outlet, cage-shaped rotors fixedly arranged in the powder selecting chamber, a driving mechanism for driving the cage-shaped rotors to rotate, a fine powder processing device and a fan, wherein the fine powder processing device and the fan are sequentially connected with the fine powder outlet of the powder selecting chamber; the cage type rotors are horizontally arranged in parallel in the powder selecting chamber, the rotating directions of the two adjacent cage type rotors are opposite, and the air inlet is positioned below the cage type rotors.
As a limitation of the present invention: and a diversion strip which is positioned below the cage-shaped rotor and used for changing the air flow path is fixedly arranged in the powder selecting chamber, and one end of the cross section of the diversion strip, which is far away from the cage-shaped rotor, is a sharp angle.
As a further limitation of the invention: the cross section of the flow guide strip is quadrilateral or triangular, and any angle of the quadrilateral or the triangular is far away from the cage-shaped rotor to form a sharp angle.
As a further limitation of the invention: the feed inlet is arranged at one end of the powder selecting chamber, which is opposite to the coarse powder discharge port.
As a limitation of the present invention: the two air inlets are arranged oppositely, are respectively arranged on the outer wall of the powder selecting chamber and are communicated with the powder selecting chamber, and the length direction of the air inlets is consistent with that of the flow guide strips.
As another limitation of the present invention: and two fine powder outlets are arranged and are respectively fixedly arranged on the outer walls of the powder selecting chambers at the two ends of the cage-shaped rotor and communicated with the powder selecting chambers.
As a further limitation of the invention: the fine powder treatment device comprises a cyclone separator communicated with the fine powder outlet, a fine powder collector and a bag type dust collector, wherein the fine powder collector and the bag type dust collector are communicated with the cyclone separator, and the fan is fixedly arranged on an air outlet of the bag type dust collector.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:
(1) the powder selecting chamber is provided with a plurality of cage-shaped rotors which are horizontally arranged in parallel, so that a plurality of airflow vortexes which rotate around a horizontal shaft are formed under the driving of the cage-shaped rotors, and the movement directions of the airflow in a joint area are consistent, so that a stable and uniform particle grading flow field is formed in the powder selecting chamber; the blades of the cage type rotor are in an arc shape which is bent inwards along the radial direction to form the cage type rotor with large two ends and small middle, so that the rotation strength and the flow passing resistance of airflow at the two ends of the cage type rotor are increased, and the airflow distribution along the axial direction of the cage type rotor is more uniform;
(2) the inner wall of the powder selecting chamber is provided with the flow guide strips parallel to the axis of the cage-shaped rotor, the sharp corners of the flow guide strips face downwards, the movement path of air entering the powder selecting chamber from the air inlet can be effectively changed, obvious air flow distribution is formed, and stable air flow is formed at the lower half part of the powder selecting chamber;
(3) the two air inlets are oppositely arranged on the outer wall of the powder selecting chamber and are communicated with the powder selecting chamber, the length direction of the two air inlets is consistent with the length direction of the flow guide strips, so that air can form stable vertically ascending air flow after entering the air inlets, and the stable and uniform air flow field in the powder selecting chamber is formed together with the flow guide strips and the cage-shaped rotor;
(4) the two fine powder outlets are respectively fixedly arranged on the outer walls of the powder selecting chambers at the two ends of the cage-shaped rotor and communicated with the powder selecting chambers, so that smaller particles which flow to the inner cavity of the cage-shaped rotor due to larger drag force can flow out of the inner cavity of the powder selecting chamber in the shortest path, and the phenomenon that the selected smaller particles flow into the powder selecting airflow again can be effectively avoided.
In conclusion, the air flow field in the powder selecting chamber is uniform and stable, the material handling capacity is large, the powder selecting precision is high, and the powder selecting chamber is suitable for all powder selecting machines.
Drawings
The invention is described in further detail below with reference to the figures and the embodiments.
Fig. 1 is a schematic front perspective structural view of embodiment 1 of the present invention;
fig. 2 is a left perspective structural schematic view of embodiment 1 of the present invention;
fig. 3 is a schematic front perspective structural view of embodiment 2 of the present invention.
In the figure: 1-a feed inlet, 2-an air inlet, 3-a coarse powder outlet, 4-a fine powder outlet, 5-a powder selecting chamber, 6-a cage rotor, 7-a rotating shaft, 8-a motor, 9-a fine powder processing device, 91-a cyclone separator, 92-a fine powder collector, 93-a bag type dust collector, 94-a fan, 10-a flow guide strip and 11-a coarse powder collector.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the powder concentrator described herein is a preferred embodiment, is for the purpose of illustration and explanation only, and is not to be construed as limiting the present invention.
EXAMPLE 1 powder concentrator
In this embodiment, as shown in fig. 1 and fig. 2, a powder concentrator includes a powder selecting chamber 5 having a feeding port 1, an air inlet 2, a coarse powder outlet 3, and a fine powder outlet 4, a cage rotor 6 fixedly disposed in the powder selecting chamber 5, a driving mechanism for driving the cage rotor 6 to rotate, a fine powder processing device 9 and a blower 94 sequentially connected to the fine powder outlet 4 of the powder selecting chamber 5. The upper half part of the powder selecting chamber 5 is a cylinder, the lower half part of the powder selecting chamber is conical, the top part of the powder selecting chamber is sealed by an outwards protruding cambered surface, the coarse powder outlet 3 is arranged at the conical end of the lower half part of the powder selecting chamber 5, and the lower end of the coarse powder outlet 3 is connected with a coarse powder collector 11, so that larger granular materials can automatically fall down by gravity and are discharged from the coarse powder outlet 3 to the coarse powder collector 11 for collection; the feed inlet 1 is arranged at one end of the powder selecting chamber 5 opposite to the coarse powder outlet 3, namely on the cambered surface at the top of the powder selecting chamber 5, so that materials to be separated enter the inner cavity of the powder selecting chamber 5 from the upper end (the upper end in the figure 1) of the powder selecting chamber 5 and are separated by the cage-shaped rotor 6; the two fine powder outlets 4 are respectively fixedly arranged on the outer walls of the powder selecting chambers 5 at the two ends of the cage-shaped rotor 6 and communicated with the powder selecting chambers 5, the fine powder outlets 4 are respectively communicated with a fine powder processing device 9, the fine powder processing device 9 adopts the prior art and comprises a cyclone separator 91 communicated with the fine powder outlets 4, a fine powder collector 92 communicated with the cyclone separator 91 and a bag type dust collector 93, and the fan 94 is fixedly arranged at an air outlet of the bag type dust collector 93 and used for sucking fine powder into the fine powder collector 92 for collection.
The cage type rotor 6 is at least provided with two, blades of the cage type rotor 6 are all arcs which are bent inwards along the radial direction of the cage type rotor 6, the two cage type rotors 6 are formed, the two ends of each cage type rotor 6 are large, the middle of each cage type rotor 6 is small, the cage type rotors 6 are arranged in the powder selecting chamber 5 in a mutually parallel horizontal mode (the horizontal direction of the drawing 1), the rotating directions of the cage type rotors 6 are opposite, namely the cage type rotors 6 on the left side (the left side of the drawing 1) rotate clockwise, and the cage type rotors 6 on the right side rotate anticlockwise.
The driving mechanism is a motor 8, the motor 8 is fixedly arranged on the fine powder outlet 4, one end of the rotating shaft 7 is connected with an output shaft of the motor 8, and the two motors 8 rotate forwards and reversely one by one, so that the rotating directions of the two cage-shaped rotors 6 are opposite, and the stability of air flow around the cage-shaped rotors 6 is ensured.
A diversion strip 10 which is positioned below the cage-shaped rotor 6 (below the picture 1) and used for changing the air flow path is fixedly arranged in the powder selecting chamber, one end of the cross section of the diversion strip 10, which is far away from the cage-shaped rotor 6, is a sharp corner, and two ends of the diversion strip 10 are respectively and fixedly arranged on the inner wall of the powder selecting chamber 5, the diversion cross section of the embodiment is a quadrangle, and the diagonal line of the quadrangle is vertically arranged (vertical direction in the picture 1) to ensure that the downward end of the quadrangle is a sharp corner; when wind enters from the air inlet 2, the sharp corner divides the direction of the airflow, so that the airflow is divided along the planes on two sides of the sharp corner of the flow guide strip 10 to form two airflows which are not mutually influenced, and stable airflow is generated in the powder selecting chamber 5.
When the powder selecting device is used, the cage-shaped rotor 6 is opened firstly, negative pressure is formed in the powder selecting chamber 5, air is sucked from the two air inlets and then rises, the air is divided at the position of the flow guide strip 10 and moves upwards along the two side walls of the flow guide strip 10 respectively, because the two cage-shaped rotors 6 rotate anticlockwise and clockwise, the divided air forms two vortexes rotating around the horizontal axis along with the cage-shaped rotor 6, materials are thrown into the powder selecting chamber 5 from the feed inlet 1, small-particle materials rotate along with the vortexes of the cage-shaped rotors 6, enter the fine powder outlet 4 under the adsorption action of the fan 94 and finally enter the fine powder collector 92; the larger particles are subjected to larger centrifugal force and move towards the outer side wall, and fall into the coarse powder collector 11 along the side wall under the action of gravity, so that the aim of material classification is fulfilled.
EXAMPLE 2 powder concentrator
In this embodiment, as shown in fig. 3, the powder concentrator has substantially the same structure as the powder concentrator in embodiment 1, except for the number of cage rotors 6, three cage rotors 6 are provided in this embodiment, and are sequentially and horizontally arranged in parallel in the inner cavity of the powder concentrating chamber 5, three cage rotors 6 are provided, which are arranged in parallel on the same horizontal plane, the cage rotors 6 on both sides rotate clockwise, and the cage rotor 6 in the middle rotates counterclockwise; the guide strips 10 are two, one cross section is quadrilateral, the other cross section is triangular, the diagonal of the guide strip 10 with the quadrilateral cross section is placed vertically (in the vertical direction of fig. 3), one end of the guide strip facing the left side (in the left side of fig. 3) is a sharp corner, the guide strips 10 with the quadrilateral cross section are arranged below the left side and the middle cage-shaped rotor 6, and the guide strips 10 with the triangular cross section are arranged below the right cage-shaped rotor 6.
The terms "upper", "lower", "left", "right" and the like as used herein are used in the same direction as the orientation of fig. 1 of the drawings of the present specification, and are only used for convenience of description and simplification of the present invention, and are not intended to indicate or imply that a device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the scope of the present invention.
Claims (7)
1. The utility model provides a powder concentrator, includes the selection powder room that is equipped with feed inlet, air intake, middlings export, fine powder export, sets firmly the cage rotor in the selection powder room, is used for driving cage rotor pivoted actuating mechanism, with the fine powder export of selection powder room continuous fine powder processing apparatus and fan in proper order, its characterized in that: the cage type rotor is provided with at least two blades, and the blades of the cage type rotor are all arc-shaped which are inwards bent along the radial direction of the cage type rotor to form the cage type rotor with two large ends and a small middle part; the cage type rotors are horizontally arranged in parallel in the powder selecting chamber, the rotating directions of the two adjacent cage type rotors are opposite, and the air inlet is positioned below the cage type rotors.
2. The powder concentrator of claim 1, wherein: the powder selecting chamber is internally and fixedly provided with a flow guide strip which is positioned below the cage-shaped rotor and used for changing the air flow path, one end of the cross section of the flow guide strip, which is far away from the cage-shaped rotor, is a closed angle, and the air inlet is positioned below the flow guide strip.
3. The powder concentrator of claim 2, wherein: the cross section of the flow guide strip is quadrilateral or triangular, and any angle of the quadrilateral or the triangular is far away from the cage-shaped rotor to form a sharp angle.
4. A powder concentrator as claimed in any one of claims 1 to 3, wherein: the feed inlet is arranged at one end of the powder selecting chamber, which is opposite to the coarse powder discharge port.
5. The powder concentrator of claim 4, wherein: the two air inlets are arranged oppositely, are respectively arranged on the outer wall of the powder selecting chamber and are communicated with the powder selecting chamber, and the length direction of the air inlets is consistent with that of the flow guide strips.
6. The powder concentrator of claim 5, wherein: and two fine powder outlets are arranged and are respectively fixedly arranged on the outer walls of the powder selecting chambers at the two ends of the cage-shaped rotor and communicated with the powder selecting chambers.
7. The powder concentrator as claimed in any one of claims 1-3, 5, 6, wherein: the fine powder treatment device comprises a cyclone separator communicated with the fine powder outlet, a fine powder collector and a bag type dust collector, wherein the fine powder collector and the bag type dust collector are communicated with the cyclone separator, and the fan is fixedly arranged on an air outlet of the bag type dust collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911030652.9A CN110773428B (en) | 2019-10-28 | 2019-10-28 | Powder selecting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911030652.9A CN110773428B (en) | 2019-10-28 | 2019-10-28 | Powder selecting machine |
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| CN110773428A true CN110773428A (en) | 2020-02-11 |
| CN110773428B CN110773428B (en) | 2022-03-25 |
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| CN201911030652.9A Active CN110773428B (en) | 2019-10-28 | 2019-10-28 | Powder selecting machine |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3814458A1 (en) * | 1988-04-28 | 1989-11-09 | Krupp Polysius Ag | Air separator |
| CN1122263A (en) * | 1994-07-06 | 1996-05-15 | 勒舍有限公司 | Mill classifier |
| CN2273630Y (en) * | 1996-07-03 | 1998-02-04 | 同济大学 | Flow reducing turbine type air sorting mechanism for fin powder |
| CN2313676Y (en) * | 1997-11-26 | 1999-04-14 | 上海华力气流粉碎科技有限责任公司 | Horizontal turbine superfine powder blow-sorting apparatus |
| CN200991688Y (en) * | 2006-12-29 | 2007-12-19 | 谭传德 | Fluidizing high-fine powder sorting machine |
| CN202052701U (en) * | 2011-01-18 | 2011-11-30 | 赵益民 | Powder concentrator capable of sorting out component materials having particles of rough, medium, and fine particle sizes |
| CN102615046A (en) * | 2012-04-10 | 2012-08-01 | 江苏安必信环保设备有限公司 | Novel powder selecting machine capable of uniformly scattering material |
| CN203108798U (en) * | 2012-12-05 | 2013-08-07 | 青岛世纳机械设备有限公司 | Horizontal superfine multi-rotor classifier |
| CN104624499A (en) * | 2015-02-11 | 2015-05-20 | 江苏新业重工股份有限公司 | Efficient powder selecting machine with power material scattering device |
| CN204842208U (en) * | 2015-04-29 | 2015-12-09 | 中国石油大学(北京) | Wheeled air current selection powder machine crouches |
| CN107971224A (en) * | 2016-10-25 | 2018-05-01 | 中国石油化工股份有限公司 | Flow field construction method and grading plant for gradation |
| CN207357594U (en) * | 2017-08-17 | 2018-05-15 | 河南助拓电气科技股份有限公司 | A kind of more rotor powder concentrators of high sharpness of separation |
| CN109332010A (en) * | 2018-09-07 | 2019-02-15 | 天津水泥工业设计研究院有限公司 | More rotor dynamic powder concentrators select powder method and application |
-
2019
- 2019-10-28 CN CN201911030652.9A patent/CN110773428B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3814458A1 (en) * | 1988-04-28 | 1989-11-09 | Krupp Polysius Ag | Air separator |
| CN1122263A (en) * | 1994-07-06 | 1996-05-15 | 勒舍有限公司 | Mill classifier |
| CN2273630Y (en) * | 1996-07-03 | 1998-02-04 | 同济大学 | Flow reducing turbine type air sorting mechanism for fin powder |
| CN2313676Y (en) * | 1997-11-26 | 1999-04-14 | 上海华力气流粉碎科技有限责任公司 | Horizontal turbine superfine powder blow-sorting apparatus |
| CN200991688Y (en) * | 2006-12-29 | 2007-12-19 | 谭传德 | Fluidizing high-fine powder sorting machine |
| CN202052701U (en) * | 2011-01-18 | 2011-11-30 | 赵益民 | Powder concentrator capable of sorting out component materials having particles of rough, medium, and fine particle sizes |
| CN102615046A (en) * | 2012-04-10 | 2012-08-01 | 江苏安必信环保设备有限公司 | Novel powder selecting machine capable of uniformly scattering material |
| CN203108798U (en) * | 2012-12-05 | 2013-08-07 | 青岛世纳机械设备有限公司 | Horizontal superfine multi-rotor classifier |
| CN104624499A (en) * | 2015-02-11 | 2015-05-20 | 江苏新业重工股份有限公司 | Efficient powder selecting machine with power material scattering device |
| CN204842208U (en) * | 2015-04-29 | 2015-12-09 | 中国石油大学(北京) | Wheeled air current selection powder machine crouches |
| CN107971224A (en) * | 2016-10-25 | 2018-05-01 | 中国石油化工股份有限公司 | Flow field construction method and grading plant for gradation |
| CN207357594U (en) * | 2017-08-17 | 2018-05-15 | 河南助拓电气科技股份有限公司 | A kind of more rotor powder concentrators of high sharpness of separation |
| CN109332010A (en) * | 2018-09-07 | 2019-02-15 | 天津水泥工业设计研究院有限公司 | More rotor dynamic powder concentrators select powder method and application |
Non-Patent Citations (1)
| Title |
|---|
| 王仲春: "《水泥工业粉磨工艺技术》", 30 June 2000 * |
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