CN2142759Y

CN2142759Y - High-efficiency energy-saving powder selector

Info

Publication number: CN2142759Y
Application number: CN 92221796
Authority: CN
Inventors: 黄文熙; 殷登皋
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-11-24
Filing date: 1992-11-24
Publication date: 1993-09-29
Anticipated expiration: 2002-11-24

Abstract

The utility model relates to a high-efficiency energy-saving powder selector, which is characterized in that a vane of the existing stator is designed into a vane formed by connecting a major vane arranged at the back end with a U-shaped minor vane arranged on the front end. The major vane is intersected with the U-shaped minor vane, and the angle between the major vane and the U-shaped minor vane is 100 DEG to 160 DEG. So all the coarse granule material which is thrown on the vanes by rotor rotational flow field can slide to the lower part of a separation chamber along the vanes. The coarse granule material can not come back to the rotational flow field again and can not be separated repetitively. The work efficiency of the powder selector is improved, and the energy can be saved. A secondary air cleaning device is designed into a diffusion cavity which has a gradual reduced volume from the top to the bottom. The secondary air cleaning device comprises a secondary air inlet arranged on the diffusion cavity, an air outlet arranged on the tail end of the diffusion cavity, and a separation chamber arranged at the air outlet. A guide vane which has the opposite rotation direction with the vane of the stator is fixed in the space of the separation chamber. So the cleaning efficiency of secondary air cleaning is increased, and the work efficiency of the powder selector is further improved.

Description

High-efficiency energy-saving powder selector

The utility model relates to the energy-efficient powder concentrator that separates the thickness material.

For making the powder concentrator wide accommodation, improve select materials classification performance and classification efficiency, Chinese patent 88207402.4 discloses a kind of " new and effective powder concentrator ", its objective is to strengthen powder concentrator classifying capability and classification efficiency, improves the grinding efficiency of powder concentrator.Its structure is disperseed dispersion awl, spout, a separation chamber in the tube by air main, dispersion tube, rotor in the separation chamber and stator, and the secondary air device of 1-3 road annular passage formation, coarse fodder outlet, fine powder outlet and fragment outlet are formed.Its course of work is: to being spread by spout to the material that disperses awl and descend along cone, an air-flow of air main enters the separation chamber after it is disperseed fully in disperseing tube, at rotor, in the formed level rotary flow of the stator field, material is separated by the thickness size, centrifugal force is less than rotor, the fine powder of the formed swirling eddy drag force of stator enters rotor center, collected with device by gathering dust of exporting of fine powder, coarse granule greater than the air-flow drag force lands along the bottom, separation chamber, be subjected to the cleaning wind cleaning that 1 to 3 road annular passage is carried, the fine powder of carrying secretly is dispelled by secondary, fine powder reenters rotor, discharges from the fine powder outlet, and coarse fodder is discharged by the coarse fodder outlet.Though this patent has improved the efficient of powder concentrator, also there is following deficiency, it is little that powder concentrator efficient is improved:

1, outside constant slope was fixed on rotor, integral body was an annulus to the stator of this powder concentrator by one group of blade, between per two blades one slit was arranged.When the eddy flow field of rotor space formation was thrown to blade with the coarse granule material, a part of thick material was bound on the blade and glides along blade; A part of circled round in the flow field by bounce-back, also some passes the inwall of bullet to the separation chamber from the slit of two blades, is blown into rotor again by an air-flow again then.Rebound back and pass partly thick of blade gaps and expect that material reenters in the eddy flow field and separate, wasted the source energy, made the attenuating of powder concentrator efficient.

2, the secondary cleaning wind air-intake device of this powder concentrator is a 1-3 road annular passage, the air inlet of each annular passage is two, and annular wind is to form annular naturally by the wind that two air inlets blow into, so its circulation wind wind-force is limited, secondary cleaning efficient is not high, and it is little that powder concentrator efficient is improved.In this patent, stator is fixed between the supporting plate of the rotating shaft connection that separates loam cake and pass through rotor, will heap material on the supporting plate in addition, and the corresponding speed that influences eddy flow wind in the eddy flow field reduces grinding efficiency.

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of thick material of dishing out through eddy flow wind can not come back in the eddy flow field, and secondary cleaning wind cleaning efficiency height makes powder concentrator grinding efficiency height, the energy-efficient powder concentrator of energy savings.

Solution of the present utility model is: the every blade that will constitute stator is designed to be made of with the front end U type back blades that links to each other with primary blades the rear end primary blades, forms 100 °～180 ° angle between primary blades and the U type back blades; The secondary cleaning wind apparatus is by the diffusion chamber that reduces gradually from top to down, one group of guide vane that the air outlet of the air inlet on diffusion chamber top, diffusion chamber tail end and air outlet place are fixed on the space, separation chamber constitutes, and the rotation direction that guide vane is fixed is opposite with the blade rotation direction of stator.Work as rotor rotation, when the eddy flow that forms is thrown to the blade of stator with the coarse granule material, because the blade front end is a U-shaped, shelves have been lived will be from thick the material that passes between two blade gaps, when flowing through, the primary air of stator, rotor space rotation produces a little vortex simultaneously in U type district, this vortex effectively stops thick material that rebounds out from blade and the coarse granule that directly springs into U type district to be involved in the main cyclone again, coarse granule falls along blade, like this, reduced primary air repeat the acting, the operating efficiency of corresponding raising powder concentrator.When the coarse granule material drops down onto the bottom, separation chamber, secondary cleaning wind blows into diffusion chamber from air inlet, blow to guide vane from the small gap of diffusion chamber tail end, thereby form the cleaning wind eddy flow opposite with the main cyclone direction, the cleaning wind eddy flow that main cyclone is opposite with direction is mixed with mutually and is beneficial to a thickness powder and separates, make to be clipped in thick the fine powder in the material and to obtain separating, blowed to rotor space by the air-flow of derotation and obtain collecting, thick powder selected from the coarse fodder outlet.

In the solution of the present utility model diffusion chamber can be by the swash plate of bottom, separation chamber and the diffuser plate in being fixed between swash plate chamber by swash plate constitute, form the diffusion chamber that reduces gradually from top to down between diffuser plate and the swash plate.Glide along diffuser plate from the coarse granule that falls along stator vane, form heavy curtain stream at diffusion chamber tail end air outlet, the secondary cleaning wind that blows out from air outlet cleans coarse granule, makes its fine powder of carrying secretly be taken back rotor space by the derotation air-flow and is collected.

Can make the blade of stator hang on the loam cake of separation chamber in the solution of the present utility model, and angle regulator is set, a clip shaft coupling and a propeller shaft couplings passed through in corresponding rotating shaft with rotor, simplified structure like this, remove supporting plate, reduce material and heap, can further improve efficient.

The utility model advantage compared with prior art: because the blade of the utility model stator adopts primary blades and U type back blades to connect and compose, intersect 100 °～180 ° angles, therefore the coarse granule material of throwing to blade from rotor will be lived by the U type district shelves of blade front end, and under the little eddy current effect of U type district formation, glide along blade, enter the secondary cleaning district, avoided coarse granule to come back to and be repeated in the main cyclone field to separate, better improve classifying capability and classification efficiency, improve the operating efficiency of powder concentrator; The secondary cleaning device is provided with diffusion chamber in addition, cleans wind and enters from the discharge of little space from the diffusion chamber large space, forms eddy flow under the guide vane guiding, corresponding its eddy flow wind wind-force is strong, the cleaning efficiency height got secondary cleaning wind and makes full use of, and had further improved the operating efficiency of powder concentrator.

The utility model can further specify in conjunction with the accompanying drawings.

Fig. 1 is the utility model structural representation Figure of abstract of holding concurrently;

Fig. 2 is the utility model separation chamber upper rotor and stator structure schematic diagram;

Fig. 3 is the vertical view of Fig. 2;

Fig. 4 is a secondary cleaning device vertical view among Fig. 1.

The utility model embodiment such as Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, energy-efficient powder concentrator is by air main 1, dispersion tube 2, disperse separation cone 3, separation chamber 4 in the tube 2, the rotor 5 on 4 tops, separation chamber and the stator 8 that constitutes by blade 7, the transmission mechanism 6 that the cleaning wind apparatus 9 of 4 bottoms, separation chamber, spout 10, coarse fodder outlet 11, fines outlet 12, fragment outlet 13 and drive rotor 5 rotate is formed; Wherein: the blade 7 of stator 8 by rear end primary blades 7 ' and front end U type back blades 7 " connect and compose; primary blades 7 ' and U type back blades 7 " intersecting angle is 100 °～180 °, blade 7 is suspended on the loam cake 24 of separation chamber 4, and being provided with angle regulator 23, the rotating shaft 20 of rotor 5 connects with the power transmission shaft 22 of transmission mechanism 6 by clip shaft coupling 21; Secondary cleaning wind apparatus 9 is by diffusion chamber 14, and one group of guide vane 17 that the air outlet 16 of the air inlet 15 on diffusion chamber 14 tops, diffusion chamber 14 tail ends and air outlet 16 places are fixed on 4 spaces, separation chamber constitutes, and the rotation direction of guide vane 17 is opposite with blade 7 rotation directions; Diffusion chamber 14 is formed by the swash plate 18 of bottom, separation chamber and the diffuser plate 19 that is fixed in swash plate 18 spaces by swash plate 18, and the space between diffuser plate 19 and the swash plate 18 is a diffusion chamber 14.The course of work of present embodiment is: material is from spout 10 feedings, along the material that disperses awl 3 to descend, an air-flow through blowing into from air main 1 makes it disperse tube 2 to disperse more fully, fragment is discharged from fragment outlet 13, other material is blown to the separation chamber, and 4 tops enter rotor 5, stator 8 spaces, rotate the air-flow that forms with rotor 5 and constitute an eddy flow field.The rotation of rotor 5 quickens to produce centrifugal force to material, centrifugal force is separated on the blade 7 of throwing to stator 8 greater than the coarse granule of eddy flow field air-flow drag force, the little vortex that blade 7 front end U type district types produce under eddy flow field make coarse granule along blade 7 landings to the separation chamber 4 bottoms; Centrifugal force directly falls into 4 bottoms, separation chamber less than the coarse granule of eddy flow field drag force.The coarse granule that falls when 4 tops from the separation chamber, when arriving the air outlet 16 of diffusion chamber 14 tail ends, secondary cleaning wind is by air outlet 16 ejections of diffusion chamber 14 from diffusion chamber 14 tail ends, under the effect of guide vane 17, form the secondary cleaning eddy flow opposite with eddy flow field, the coarse granule material is cleaned, the fine powder that coarse granule is carried secretly is cleaned out, blows to rotor 5, stator 8 spaces to obtain collecting, and remaining coarse granule material is discharged from coarse fodder outlet 11.In the present embodiment, the rotating shaft 20 of rotor 5 connects with power transmission shaft 22 by clip shaft coupling 21, and make blade 7 hang on separation chamber's 4 loam cakes 24, the corresponding supporting plate that saves, prevented the material heap, reduce eddy flow field whirlwind resistance, angle regulator 23 is set, can adjust the inclination angle of blade 7 according to separating different material in blade 7 suspensions place.

Claims

1, a kind of energy-efficient powder concentrator, by air main 1, disperse tube 2, disperse dispersions awl 3, separation chamber 4 in the tube 2, the rotor 5 on 4 tops, separation chamber and the rotor 5 outer stators 8 that constitute by blade 7, the cleaning wind apparatus 9 of 4 bottoms, separation chamber, spout 10, coarse fodder outlet 11, fines outlet 12 and fragment outlet 13 are formed, the blade 7 that it is characterized in that stator 8 by rear end primary blades 7 ' and front end U-shaped back blades 7 " constitute primary blades 7 ' " intersect 100 °～180 ° angles with U type back blades 7; Clean wind apparatus 9 by the diffusion chamber 14 that reduces gradually from top to down, the fixing one group of guide vane 17 in the air outlet 16 of the air inlet 15 on diffusion chamber 14 tops, diffusion chamber 14 tail ends and air outlet 16 places constitutes, and wherein the rotation direction of guide vane 17 is opposite with blade 7 rotation directions.

2, energy-efficient powder concentrator according to claim 1 is characterized in that diffusion chamber 14 is formed by the swash plate 18 of bottom, separation chamber and the diffuser plate 19 that is fixed in swash plate 18 spaces by swash plate 18.Space between diffuser plate 19 and the swash plate 18 is a diffusion chamber 14.

3, energy-efficient powder concentrator according to claim 1 is characterized in that blade 7 hangs on the loam cake 24 of separation chamber 4, and is provided with angle regulator 23, and the rotating shaft 20 of rotor 5 connects with power transmission shaft 22 by clip shaft coupling 21.