CN2868458Y

CN2868458Y - Coal classifying device

Info

Publication number: CN2868458Y
Application number: CN 200520014378
Authority: CN
Inventors: 杨国华
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-08-26
Filing date: 2005-08-26
Publication date: 2007-02-14
Anticipated expiration: 2015-08-26

Abstract

The utility model relates to a coal grading device including a case, a grading room and an air supplying device. The air distribution board where air distributing areas corresponding to the bottom of the grading room and the air supplying device are arranged is arranged inside the case, and a material outlet slot that is convenient for discharging coal particles on the air distribution board is set on relevant case at the end of the air distribution board. The invention is characterized in that: the percentage of open area of the central air distributing area of said air distribution board is smaller than the percentage of open area of the areas at two sides. After adopting above structure, the coal layer on the air distribution board can be formed as vibrating fluidized bed with the help of gas flow sprayed from the air distribution plate and the vibration of the air distribution board, utilizing this vibration fluidized bed to grade coal, and the coal that is throwing into the increasing section of grading room from central air distribution area and falling down to both sides of the air distribution board along two side-walls of grading room returns to the central area and is thrown again, after several times of circulation like this, the fine particles will be separated fully, so that the coal falling down to the sides of the air distribution board caused by boundary effect is discharged from material outlet slot with fine coal particles wrapped in the coal together is avoided, thereby the grading effect is improved.

Description

A kind of coal grading plant

Technical field

The utility model relates to a kind of device that loose unpacked material is separated, and refers in particular to a kind of dry type gradation equipment that is applicable to coal.

Background technology

At present, the common method of coal being carried out classification is to adopt screening machine to sieve, during operation, though it can be according to the size of screen size, coal is divided into granularity greater than the oversize of screen size and the granularity screenings less than screen size, but when running into moist coal, the screening of screening machine exists such defective, be the sieve pore blockade problem, the more little easy more obstruction of sieve aperture.Therefore, generally greater than 6mm, when granularity during less than 6mm, the screening efficiency of screening machine is very low or can't normal operation with the partition size of screening machine for existing coal.In order to solve the blockage problem of coal screening machine sieve aperture, the inventor utilizes the pneumatic classification principle, dry classification method for coal and device had once been proposed, be that China Patent No. is just to have disclosed a kind of like this clasfficiator in 93111761.5 " dry classification method for coal and device ", it comprises casing, be installed in the vibrator on the casing, be positioned at grading room and the air-supply arrangement that is located at lower box on the casing, casing top is provided with charging aperture and the outlet that links to each other with grading room respectively successively, drive by vibrator in the installation of the middle part of casing, the oscillating plate that tilts of charging aperture dorsad, be furnished with the wind region that high opening rate band and low percent opening band form on this oscillating plate at interval, end at wind region is fixed with an internal partition downwards, and the top of wind region end is crossed with the adjustable plate of regulating the fluid bed height, wherein the blow tank that formation communicates with grading room between demarcation strip and the box inside wall.During use, the moist coal that mixes drops on the oscillating plate by charging aperture, and along with the vibration of oscillating plate, move in the grading room along the plate face, air that is provided by air-supply arrangement or hot flue gas pass oscillating plate and enter grading room, form several height, weathering zone, at height, under the mating reaction of weathering zone air-flow and the vibration of oscillating plate, in the grading room bottom, form moving bed above the oscillating plate, fluid bed, air flow bed combines, flow perturbation is strong, the gas-solid flow field of collision friction fierceness between particle, the moist coal group of mixing is disperseed fast, large coal particles is mobile status, move along oscillating plate, discharge from blow tank by the gap between adjustable plate and the oscillating plate apace, middle particulate coal overflows into blow tank in the overflow mode and discharges, small-particle coal is entrained with grading room by air-flow, collect by downstream separator and deduster, regulate air velocity, can make the arbitrary particle diameter of partition size in 0.5mm～6mm scope carry out high-effective classifying, and no dust pollution, so this device has solved the defective of conventional screen extension set well.But still find following defective in actual use: 1. because oscillating plate adopts the alternate cloth wind structure of high and low percent opening band, thereby the coal charge of throwing when the high opening rate band is when falling adjacent low percent opening band, be subjected to the barrier effect of high opening rate band air-flow, the coal charge that accumulates on the low percent opening band can not be transferred to next adjacent high opening rate band in time, have only when coal charge to be stacked into when a certain amount of, overcome the strength of high opening rate and move into the high opening rate band by the gravity of coal charge self.To this coal charge that moves into suddenly, will the air-flow of corresponding high opening rate band be reduced suddenly simultaneously, weakened the upthrow ability of breaking up then widely, and finally reduced grading effect coal charge.2. because this device carries out classification by particle sinking speed, so in grading room, particularly at the pyramidal area of grading room some particles that do not increase and be unable to come down, in the certain height zone, seethe up and down that always suspending, its existence will directly hinder blowing out of small-particle coal, and service time one is long, above-mentioned particle can be cumulative at pyramidal area, form one deck coal obstruction band when serious even at pyramidal area, cause small-particle coal in time to discharge, thereby cause the grading plant can't operate as normal, make that its inefficiency and grading effect are poor.3. because grading room adopts up big and down small cross section and wall effect, so it is big that wind speed appears in its center easily, the less phenomenon of wind speed then appears in its near wall region territory, both sides, when this makes actual classification, the coal grain that on the one hand makes a large amount of upthrows is from the near wall region domain dropping, and is slipped to the less oscillating plate dual-side of air velocity along wall, shifts to discharge gate along dual-side at last and discharges, so that the buckwheat coal that wraps therein can not be separated and elutriation fully, and reduces effectiveness of classification.Make that on the other hand center coal grain is few, both sides near wall region coal grain is many, and wind distribution and coal charge distribution coupling are improper, cause center wind power utilization rate low, have promptly reduced the disposal ability of unit air volume, cause energy consumption bigger than normal.4. low percent opening band gas speed is little, and material or clogging appear leaking in air vent easily.5. because grading room outlet area and grading room main body arrange that at right angles so the zig zag of outlet area can influence the even distribution of classification indoor air flow, and the reduction classification efficiency.6. total air compartment and separating chamber are arranged on the vibration casing, and mass of vibration is big, the manufacturing cost height.And because total air channel roughly is the L type, make that the interior flows outside pressure drop difference in total air channel is not big, promptly outside wind speed is greater than inboard wind speed, thereby causes the wind-force inequality in each minute air channel during the air channel entering each minute, is difficult to control the wind speed size in each minute air channel when making work.7. when charging, because the barrier effect of air-flow, coal charge can stagnate and amass on the discharging opening of feeder trough, promptly in the charging aperture on casing top, consequently can't realize continuous-feeding.And in case coal amount in feeder trough when being accumulated to a certain degree, then coal charge overcomes stopping of strength by self gravity and is slipped on the oscillating plate, thereby can occur blanking phenomenon by spells in whole classification process.Especially when the moisture of coal is big, the high seam of one ridge, one ridge can appear in the coal charge that this periodicity falls, so that can't lean on air-flow that it is dispelled, can only move to discharge end from feed end by means of the vibration force of oscillating plate, promptly not classifiedly just drain by blow tank, obviously, such structure has seriously influenced grading effect.Therefore the structure of above-mentioned grading plant still has unsatisfactory part, need await further improvement.

Summary of the invention

First technical problem to be solved in the utility model is the defective at prior art, provides a kind of and can make coal charge obtain abundant elutriation and improve the coal grading plant of grading effect.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: this coal grading plant comprises casing, be positioned at grading room and the air-supply arrangement of being located at lower box on the casing, in the described casing air distribution plate is installed, on this air distribution plate, be furnished with and above-mentioned grading room bottom and the corresponding wind region of air-supply arrangement, and the head end of this air distribution plate is corresponding to the feeder trough on the described grading room, be provided with the blow tank that the particulate coal be convenient on the air distribution plate is discharged with the terminal corresponding casing of this air distribution plate, it is characterized in that: the center wind region percent opening of described air distribution plate is less than the percent opening in its dual-side zone.

As a kind of improvement of the present utility model, the casing of described blow tank top and grading room cone position can be provided with a plurality of barriers hurdle of blow tank inclination dorsad, upper end successively along short transverse, form the discharging opening of the particulate coal of corresponding height between each barrier hurdle successively.

As another kind of improvement the of the present utility model, described grading room can comprise the pyramidal area that the bottom is big up and small down and the current stabilization district and the outlet area on top again, and the top of described pyramidal area is symmetrically arranged with the deflector that the upper end tilts to the both sides of this pyramidal area hang plate.

Improve again as of the present utility model, described air-supply arrangement comprises that lower box is separated into the L type branch air channel of a plurality of gradual transition and is installed in the branch air-valve at each minute air channel air inlet place, and each minute the air channel air outlet corresponding to the wind region on the air distribution plate.

The center wind region percent opening of described air distribution plate can be realized in the following manner less than the percent opening in its dual-side zone: promptly this air distribution plate can comprise a plurality of gratings, bracket and cushion block, each grating and cushion block compartment of terrain successively are enclosed within on the bracket and are tightened to one, slit between each grating forms the ventilation strip hole, and is embedded with the pad that keeps out the wind in one of them slit at least in the wind region of center.

In above-mentioned each scheme, in described feeder trough, be good so that coal sorting feeder to be set, this coal sorting feeder can be the strength coal sorting feeder, is to link to each other with source of the gas and be arranged on air nozzle on the feeder trough wall.Also can be mechanical coal sorting feeder, be a rotary blade by the driving mechanism drive.Perhaps be one can be around the coal passing plate of its upper shaft swing.Perhaps be one group of skewed guide plate of on short transverse, placing at interval, form the inclination coal outlet under the corresponding height between each guide plate successively.Perhaps be the mutual combination of above-mentioned strength coal sorting feeder and mechanical coal sorting feeder, make the coal charge that enters send out continuously on the bed surface of air distribution plate.

Compared with prior art, advantage of the present utility model is: 1. utilize the structure of the center wind region percent opening of air distribution plate less than its dual-side regional opening rate, can make the coal charge of throwing the grading room divergent segment on the wind region of center and being slipped to air distribution plate respective sides limit along the grading room two side, come back to the center and by throwing once more, to form the systemic circulation of particle, after so repeatedly circulating, fine grained is wherein fully separated, avoided discharging from blow tank together with the duff material that wraps wherein, thereby improved grading effect owing to wall effect makes the coal charge of falling the air distribution plate dual-side.2. owing to be provided with a plurality of barriers hurdle, therefore those size particles that are trapped in differing heights in grading room then can be able to timely discharge by the discharging opening between the corresponding barrier hurdle, having eliminated thus in the prior art should the formed obstruction band in zone, make small-particle coal discharge from the outlet area of grading room swimmingly, therefore after adopting this barrier hurdle, can make clasfficiator high efficiency of the present utility model, grading effect is good.3. the deflector of She Zhiing impels the air-flow distribution on the grading room cross section to be tending towards evenly, makes also that simultaneously the large coal particles that is launched on the deflector by air-flow in time falls after rise, plays the effect of interception large coal particles.4. with each minute the air channel be designed to the L type air channel of gradual transition, make the isolation mutually between the asymptotic expression transition region of each minute air channel, eliminate the phenomenon of wind speed inequality between each minute air channel fully, thereby more helped the wind speed control in each minute air channel, made the grading effect better.Make that simultaneously whole air compartment duct resistance is little, energy consumption is low, compact conformation.5. can be by means of the active force of coal sorting feeder, the coal charge that falls in the feeder trough is disseminated on the bed surface of air distribution plate, prevent effectively so on the one hand that coal charge from only dropping in narrow the feed zone in and phenomenon is amassed in stagnating of occurring, the defective of having avoided the high seam of being piled into to be broken up by air-flow; Also ensure the continuity and the uniformity of charging on the other hand, thereby can improve classification disposal ability of the present utility model and grading effect greatly.

Description of drawings

Fig. 1 is the structural representation of the utility model first embodiment;

Fig. 2 is that the A-A of Fig. 1 is to cutaway view;

Fig. 3 is the structural representation of wind region on the air distribution plate among Fig. 1;

Fig. 4 be among Fig. 3 B-B to structural representation;

Fig. 5 is the structural representation at feeder trough place among Fig. 1;

Fig. 6 is the structural representation of impeller among Fig. 5;

Fig. 7 is the structural representation at feeder trough place among the utility model second embodiment;

Fig. 8 is the structural representation at feeder trough place among the utility model the 3rd embodiment;

Fig. 9 is the structural representation at feeder trough place among the utility model the 4th embodiment;

Figure 10 is the structural representation at feeder trough place among the utility model the 5th embodiment.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Embodiment 1, as depicted in figs. 1 and 2, this coal grading plant comprises casing 1, be positioned at the grading room 2 on the casing 1 and be located at the air-supply arrangement 3 of lower box, and wherein, grading room 2 is that the outlet area on prismatic current stabilization district and top is formed by the big up and small down pyramidal area in bottom, middle part again, grading room 2 bottoms link to each other with casing 1 top, here, grading room 2 is right against casing 1, makes the effective area of classification bigger, and be provided with feeder trough 21, i.e. charging aperture at its antetheca.Air distribution plate 4 is installed in the casing 1, on this air distribution plate 4, is furnished with and above-mentioned grading room 2 bottoms and air-supply arrangement 3 corresponding wind regions, and be provided with the blow tank 11 that the particulate coal be convenient on the air distribution plate 4 is discharged with this air distribution plate 4 terminal corresponding casings.In order to make present embodiment have better grading effect, above-mentioned air distribution plate 4 structures are designed to the percent opening of center wind region percent opening less than its dual-side zone, as shown in Figure 3 and Figure 4, in the present embodiment, this air distribution plate 4 comprises a plurality of gratings 41, bracket 42 and pad 44, each grating 41 and pad 44 compartment of terrain successively are enclosed within on the bracket 42 and are tightened to one, and to form the bar shaped sieve, the slit that forms between each grating 41 is the ventilation strip hole.Grating is placed with 0 °～30 ° inclination angle.Like this, the thickness of change pad 44 can be regulated the gap width between the adjacent grating 41, the size that just can regulate air vent.Simultaneously, for the percent opening that makes air distribution plate center wind region percent opening, can stop up a strip hole with pad 43, to reduce the air output in this zone every some ventilation strip holes at air distribution plate center wind region less than its dual-side zone.Like this because the percent opening in wind region dual-side zone is bigger, eliminated wall effect, make the coal charge that is slipped to the wind region dual-side can be thrown or get back to the center again again and by throwing once more, thereby form the repeatedly circulation upthrow of particle, fine grained is wherein fully separated, avoided from blow tank 11, discharging, finally guaranteed grading effect owing to wall effect makes the duff material.

Simultaneously, corresponding grading room position is provided with a plurality of barriers hurdle 22 of blow tank inclination dorsad, upper end successively along short transverse above blow tank 11, form the particulate coal discharging opening of corresponding height between each barrier hurdle 22 successively, consider the closure of grading room integral body, here, this barrier field is within casing 1 and grading room 2 pyramidal areas, and form the tapping channel that is connected with blow tank 11 between each barrier hurdle 22 and casing and the grading room inwall, pass through tapping channel from the isolated size particles coal of each discharging opening like this, by discharging in the blow tank 11.

In order to improve classification disposal ability and grading effect, be symmetrically arranged with the deflector 23 that the upper end tilts to the both sides of this pyramidal area hang plate on the top of pyramidal area, and be provided with the baffle 24 of quadrangular shape at outlet area, the wind that blows so from bottom to top enters the current stabilization district more equably under the effect of deflector 23.And under the effect of baffle 24, can overcome corner's wind direction variation and generation to current stabilization district influence on flow field, when guaranteeing that the duff grain is discharged fully, can prevent the short circuit of carrying secretly of large coal particles again.

And described air-supply arrangement 3 comprises the L type branch air channel 31 and the branch air-valve 32 that is installed in each minute air channel air inlet place that the air distribution plate below is separated into a plurality of gradual transition, each minute the air channel air outlet corresponding to the wind region of described air distribution plate, wind speed between each minute air channel is independent of each other like this, so that the adjusting of air quantity, can also reduce duct resistance, cut down the consumption of energy.

The vibration of above-mentioned air distribution plate 4 is to realize by the vibrator 6 that is installed in the casing, and this vibrator adopts the exciting mode of driven by motor eccentric block, also can adopt known technologies such as vibrating motor.When vibrator 6 energising vibrations, but drive case 1 and air distribution plate 4 vibrations, and this vibration force can be quickened the coarse granule coal charge and move on air distribution plate 4, and large coal particles is successfully discharged.Because casing 1 is in vibrational state in the course of the work always, therefore its with grading room 2 between the flexible cover plate 25 of employing be tightly connected, as depicted in figs. 1 and 2, this cover plate 25 covers outside the connector of the two, the one end is fixed on the casing 1, the other end and grading room 2 are the disengagement shape, in order to eliminate the noise that vibration the time is sent, are provided with bloop on the contact-making surface between cover plate and grading room, the casing.Because grading room is negative pressure when work, therefore in the course of the work, this cover plate 25 covers connector all the time.And between casing and air compartment, replace above-mentioned cover plate by the outer-enwraped type structure, promptly on the connector of casing and air compartment, flexible bag sheet 12 is arranged, thereby overcome the defective that canvas damages easily in the prior art with bolting.

Input for the ease of coal charge, the coal charge conveyer belt is installed in feeder trough 21, and in the feeder trough 21 below corresponding conveyer belt blanking coal sorting feeder is installed, in the present embodiment, this coal sorting feeder is the rotary blade 5 that is driven by conventional driving mechanisms such as motors, impeller 5 is provided with four blades 51, and blade 51 planes and impeller angle radially are-25 °～25 °, as shown in Figure 5 and Figure 6.In impeller 5 rotation processes,, coal charge is sent out continuously on the bed surface of air distribution plate 4 in the casing like this by impacting of blade 51.

During work, coal is transported in the feeder trough 21 by conveyer belt 4 and falls, rotate by the impeller 5 that is positioned at its below, above-mentioned coal is continuous, throw equably and loose to the bed surface of air distribution plate 4, air or hot flue gas through each minute air channel 31 pass air distribution plate 4 from bottom to top along the air vent on the air distribution plate 4 and enter in the grading room 2, under the acting in conjunction of said flow and vibrator 6 vibration forces, make the coal seam on the air distribution plate form vibrated fluidized bed, make the coal of different sizes be different motion states, be that large coal particles moves on air distribution plate 4 or beats, be mobile status, finally hold by air distribution plate 4 by deadweight and above it discharging opening between barrier hurdle fall in the blow tank 11; The small particles coal is done upthrow motion by the high velocity air air distribution plate 4 that blows off, wherein, after the small particles coal of throwing the grading room pyramidal area from the center of air distribution plate 4 is slipped to air distribution plate 4 dual-side zones, again by the high velocity air band upthrow in dual-side zone or blow and get back to the air distribution plate central area and upthrow, to form the systemic circulation of particle, like this through repeatedly the circulation middle particle by on throw certain altitude after, a part diminishes owing to gas speed, can not continue to rise with air-flow, enter in the blow tank 11 by discharging opening between each barrier hurdle 22 of corresponding height and tapping channel and drain; The fine particle coal is then directly carried secretly by air-flow, is the strength feed status, by current stabilization district and outlet area, drains from outlet successively.The duff grain of draining from the exit is separated discharge through the separator of next stage, and the coal dust of not separating is collected by cyclone dust collectors again, most of air communication is crossed circulating fan and is recycled to clasfficiator, a small amount of air-flow behind sack cleaner by the air-introduced machine emptying, so whole system is a negative-pressure operation, no dust pollution.

Embodiment 2, and as shown in Figure 7, itself and the above-mentioned first embodiment difference are: coal sorting feeder adopts a coal passing plate 7, the upper end of this coal passing plate 7 is fixed in the rotating shaft, rotating shaft is driven by the mechanism of routine, makes its continuous swing, thereby realizes that coal passing plate 7 is around its shaft swing.When coal charge when conveyer belt falls, by the swing of coal passing plate 7, coal charge is spilt on the bed surface of air distribution plate 4 with different inclination angles.Identical among ensuing classification process and above-mentioned first embodiment, be not repeated at this.

Embodiment 3, and as shown in Figure 8, itself and the above-mentioned first embodiment difference are: coal sorting feeder adopts one group of skewed guide plate 8 of placing at interval in short transverse, forms the inclination coal outlet of corresponding height between each guide plate successively.Like this, when coal charge falls from sending conveyer belt, separation by this each guide plate 8, the coal fluidization tower is divided into some strands of coal streams, and these some strands of never level inclination coal outlets of coal stream are scattering on the bed surface of air distribution plate 4, identical among its classification process and above-mentioned first embodiment, also be not repeated at this.

Embodiment 4, and as shown in Figure 9, it is with the above-mentioned first embodiment difference: coal sorting feeder adopts the air nozzle 9 that links to each other with source of the gas, and air nozzle 9 is positioned on the feed cell wall, promptly on the feeder trough wall of conveyer belt below.When coal charge when conveyer belt falls, air-flow by air nozzle 9 ejections, coal charge is scattered on the bed surface of air distribution plate 4, bulky grain is sowed closely from charging aperture, and the fine particle coal is sowed far from charging aperture, its classification process also with above-mentioned first embodiment in identical, be not repeated at this.

Embodiment 5, and as shown in figure 10, it is with the above-mentioned first embodiment difference: coal sorting feeder adopts the device that above-mentioned impeller 5 is combined with air nozzle 9, adopts such coal sorting feeder, can make slightly, that the duff grain is sent out is more even.Its structure and classification principle are same as the previously described embodiments, here no longer describe in detail.

Protection domain of the present utility model is not limited to the foregoing description; adopt combining of coal passing plate and nozzle as coal sorting feeder; or the combining of nozzle and one group of guide plate; or the design of the barrier hurdle in first embodiment is on the end plate of grading room; being about to be positioned at design on the end plate of pyramidal area has barrier hurdle, such scheme all to belong within the scope that the utility model protects.

Claims

1, a kind of coal grading plant, it comprises casing (1), be positioned at the grading room (2) on the casing and be located at the air-supply arrangement (3) of lower box, air distribution plate (4) is installed in the described casing, on this air distribution plate, be furnished with and above-mentioned grading room bottom and the corresponding wind region of air-supply arrangement, and the head end of this air distribution plate is corresponding to the feeder trough on the described grading room (21), be provided with the blow tank (11) that the particulate coal be convenient on the air distribution plate is discharged with the terminal corresponding casing of this air distribution plate, it is characterized in that: the center wind region percent opening of described air distribution plate (4) is less than the percent opening in its dual-side zone.

2, coal grading plant according to claim 1, it is characterized in that: the casing of described blow tank (11) top and grading room position are provided with a plurality of barriers hurdle (22) of blow tank inclination dorsad, upper end successively along short transverse, form the discharging opening of the particulate coal of corresponding height between each barrier hurdle successively.

3, coal grading plant according to claim 1, it is characterized in that: described grading room (2) comprises the pyramidal area that the bottom is big up and small down and the outlet area on top again, and the top of described pyramidal area is symmetrically arranged with the deflector (23) that the upper end tilts to the both sides of this pyramidal area.

4, coal grading plant according to claim 1, it is characterized in that: described air-supply arrangement (3) comprises the branch air-valve (32) that air distribution plate (4) below is separated into the L type branch air channel (31) of a plurality of gradual transition and is installed in each minute air channel air inlet place, and each minute the air channel air outlet corresponding to the wind region on the air distribution plate (4).

5, according to the described coal grading plant of the arbitrary claim of claim 1 to 4, it is characterized in that: described air distribution plate (4) comprises a plurality of gratings (41), bracket (42) and cushion block (44), each grating (41) and cushion block (44) compartment of terrain successively are enclosed within on the bracket (42) and are tightened to one, slit between each grating (41) forms the ventilation strip hole, and is embedded with the pad that keeps out the wind (43) in one of them slit at least in the wind region of center.

6, according to the described coal grading plant of the arbitrary claim of claim 2 to 4, it is characterized in that: be provided with in the described feeder trough (21) coal charge is sent out coal sorting feeder on air distribution plate (4) bed surface continuously.

7, coal grading plant according to claim 6 is characterized in that: described coal sorting feeder is a rotary blade (5) by the driving mechanism drive.

8, coal grading plant according to claim 6 is characterized in that: described coal sorting feeder is the coal passing plate (7) that can swing around its position, upper end.

9, coal grading plant according to claim 6 is characterized in that: described coal sorting feeder is one group of skewed guide plate (8) of placing at interval on short transverse, forms the inclination coal outlet under the corresponding height between each guide plate successively.

10, coal grading plant according to claim 6 is characterized in that: described coal sorting feeder is one to link to each other with source of the gas and be arranged on air nozzle (9) on the corresponding wall of feeder trough.