阅读说明：本技术 选粉机 (Powder selecting machine ) 是由 孙占朋 梁龙龙 刘春雨 刘庆刚 于新奇 于 2019-10-28 设计创作，主要内容包括：本发明公开了一种选粉机,包括设有进料口、进风口、粗粉出口、细粉出口的选粉室、固设于选粉室内的笼型转子、用于驱动笼型转子转动的驱动机构、与选粉室的细粉出口依次相连的细粉处理装置和风机,所述笼型转子至少设有两个,并且笼型转子的叶片均为沿其径向向内弯曲的弧形,形成两端大、中间小的笼型转子；所述笼型转子在选粉室中相互平行水平排列,且相邻的两个笼型转子的旋向相反,所述进风口位于笼型转子的下方。本发明的选粉室内空气流场均匀且稳定,物料处理量大且选粉精度高,适用于所有选粉机。(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.)

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.

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.

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.