CN218574570U - Air return device of dispersive winnowing machine - Google Patents

Abstract

The utility model discloses a return air device of a dispersive winnowing machine, which comprises a shell, a blowing device and a return air assembly, wherein a cavity settling chamber is arranged in the shell, the return air assembly comprises a return air input component, a first return air assembly, a second return air assembly and a return air output component, the return air input component, the first return air assembly and the second return air assembly are transversely arranged at the top of the shell along the shell, and at least one part of the return air output component is positioned in the cavity of the shell; the input and the subsider cooperation of return air input unit, the output of return air input unit and the input of first return air subassembly are connected, and the output of first return air subassembly is connected with the input of second return air subassembly, and the output of second return air subassembly is connected with the first input of return air output unit, and the output of return air output unit is connected with blast apparatus's input. The utility model discloses there is the advantage that reduces area.

Description

Air return device of dispersive winnowing machine

Technical Field

The utility model relates to an air return device of dispersion type air separator.

Background

Winnowing machines have gradually become essential devices for processing kitchen waste, construction waste and other fields of light and heavy material sorting processes. For example, CN112676157A discloses a garbage winnowing device, light and heavy materials are conveyed to the upper part of a conical hopper by a second conveyor belt and fall down, and heavy materials fall on a third conveyor belt through the conical hopper and are conveyed out by the third conveyor belt; selecting different blowing angles and air quantities according to the size and the density of the light materials to blow up the light materials, and meanwhile, rotating the roller towards the settling chamber to drive the light materials to enter the settling chamber for settling; the dust-containing gas in the settling chamber is filtered by a filter screen to remove part of light materials, then the dust and clean gas are separated by a cyclone separator, and the clean gas flows back to the centrifugal fan through a return air pipe to be recycled; the adjusting mode of the blowing angle is that the motor drives the connecting shaft to rotate through the main bevel gear and the auxiliary bevel gear, and the connecting shaft drives the blowing nozzle to rotate by a certain angle through the connecting plate.

The garbage winnowing equipment has the following problems:

(1) One end of a return air pipe in the equipment is communicated with the cyclone separator, and the other end of the return air pipe is communicated with the centrifugal fan. Clean gas separated by the return air pipe fitting is recycled, so that airflow in the whole shell is stable, and great interference to the outside cannot be caused. However, since the return air duct is located on the left side of the housing, the return air duct needs to separately occupy a longitudinal space, which results in an increase in the size of the apparatus in the longitudinal direction, resulting in a large floor space for the apparatus.

(2) The air separation feeding mode comprises the following steps: the material output by the first conveyor belt directly falls on the second conveyor belt, and the defect of the mode is that the material is directly fed onto the second conveyor belt without being dispersed, so that the material is easy to form local accumulation, and when the material is output from the second conveyor belt, the winnowing efficiency is reduced due to the local accumulation.

(3) And because the heavy materials directly fall into the tapered hopper, the impact force of the heavy materials on the tapered hopper is large, and the tapered hopper is easy to damage.

SUMMERY OF THE UTILITY MODEL

The utility model provides a reduce area's dispersion type air separator's return air device.

The technical scheme for solving the problems is as follows:

the return air device of the dispersive winnowing machine comprises a shell, a blowing device and a return air assembly, wherein a cavity settling chamber is arranged in the shell, the return air assembly comprises a return air input component, a first return air assembly, a second return air assembly and a return air output component, the return air input component, the first return air assembly and the second return air assembly are transversely arranged at the top of the shell along the shell, and at least one part of the return air output component is positioned in the cavity of the shell;

the input and the subsider cooperation of return air input unit, the output of return air input unit and the input of first return air subassembly are connected, and the output of first return air subassembly is connected with the input of second return air subassembly, and the output of second return air subassembly is connected with the first input of return air output unit, and the output of return air output unit is connected with blast apparatus's input.

In this reality is novel, with the top of return air subassembly at the casing along the transversal arrangement of casing, not only pleasing to the eye, the return air subassembly can not occupy the vertical space of equipment moreover, has reduced area, also can not form the interference to other objects in the place.

Drawings

FIG. 1 is a schematic view of a garbage air separation treatment system according to the present invention;

fig. 1a is a front view of a first dispersion type air classifier;

figure 1b is a perspective view of a portion of a dispersion type air classifier;

FIG. 2 is a perspective view of a preferred dispersion hopper;

FIG. 3 is a perspective view of the dispersion hopper of FIG. 2 in another orientation;

FIG. 4 is a schematic view of an adjustment mechanism in a dispersion feed hopper;

FIG. 5 is a schematic view of the material flow direction of the bulk feed hopper during operation;

FIG. 6 is an enlarged view of portion R of FIG. 1 b;

FIG. 7 is a partial schematic view of the dispersion type air classifier of FIG. 1 b;

FIG. 8 is an enlarged view of portion P of FIG. 7;

FIG. 9 is an enlarged view of section I of FIG. 1 b;

fig. 10 is a block diagram of a portion of the dispersion type air classifier of fig. 1b in another orientation;

FIG. 11 is an enlarged view of section Q of FIG. 10;

fig. 12 is an isometric view of a portion of the dispersion type air classifier of fig. 1;

fig. 13 is a partial structural view of a second dispersion type winnowing machine;

FIG. 14 is a structural view of a second first adjustment mechanism;

FIG. 15 is a perspective view of the return air input member;

FIG. 16 is a perspective view of the first return air assembly;

fig. 17 is a perspective view of a second return air assembly;

FIG. 18 is a perspective view of the quick lock assembly;

FIG. 19 is a perspective view of the return air output member;

FIG. 20 is a schematic view of a flap fan;

fig. 21 is an enlarged view of the air separation box of fig. 20;

FIG. 22 is a cross-sectional view of the material discharger;

FIG. 23 is a perspective view of a material discharger; the device comprises a dispersive feed hopper A, a feed hopper body 1, a cover body 1a, a dust collection part 2, a feed inlet 3, a material receiving part 4, an observation window 5, an access door 6, a mounting flange seat 7, a skirt part 8, a material dispersing part 9, a limiting part 10, a positioning part 11, a dustproof cover 12, a supporting part 13, a blocking shaft arch 14, a rotating plate seat 15, a sliding shaft 16, a pull rod 17, a nut 18, a screw shaft 19, a protective sleeve 20, a round nut 21, a supporting sleeve 22, a hand wheel 23, a semi-circular plate 24, a sliding sleeve 25, a sliding cavity a, an inner cavity b, a guide column c, a material receiving surface d, a main plate surface e and a collection chamber f;

the device comprises a shell B, an outer shell 30, an inner bracket 31, a first assembling hole 32, a slide rail 33, a settling chamber 34, a containing groove 35, a bracket 36 and a light material belt conveying mechanism 37;

a belt conveying mechanism C, a first motor 40, a first speed reducer 41, a belt transmission mechanism 42 and a support frame 43;

the separating component D, a second motor 44, a second speed reducer 45, a mounting seat 46 and a distributing roller 47;

a blowing device E, a blower 50, a blowing nozzle 51, a swing arm 52, a folded portion 52a, a first hole 53, a second hole 54, a third hole 55, a first lead screw 56, a first connecting seat 57, a first connecting member 58, a second connecting member 58a, an intermediate connecting member 59;

the device comprises a first adjusting mechanism F, a lifting bracket 60, a first connecting frame 60a, a second connecting frame 60b, a first driving mechanism 61, a second driving mechanism 62, a diagonal pulling frame 63, a scale 64 and a locking screw 65;

a scraping assembly G, a scraper 70 and a scraper seat 71;

the device comprises a return air device H, a return air input component 80, a box body 80a, a filter screen 80b, a first return air hole 80c, a return air duct 80d, a first return air component 81, a first return air duct 81a, a particulate matter recovery port 81b, a baffle 81c, a discharge valve component 81d, a second return air duct 82a, an inspection port 82b, an inspection door 82c, a fixed seat 82d, a groove 82e, a driving arm 82f, a handle 82g, a bolt 82H, a positioning head 82i, a return air output component 83, a main return air duct 83a and an air supplementing component 83b;

and the material accumulation component K encloses the baffle 90, the first material accumulation table 91 and the second material accumulation table 92.

The air separation box 100, the first fan 101, the separator 102, the first channel 103, the first buffer dispersion plate 104, the first wave crest 104a, the first wave trough 104b, the second buffer dispersion plate 105, the second wave crest 105a, the second wave trough 105b.

The device comprises a first shell 111, a first feed inlet 111a, a first discharge outlet 111b, a rotary driver 112, a roller body 113, a material containing groove 114, a baffle plate 115, a cutter shaft 116, a scraper 117 and a scale scraping transmission mechanism 118.

Detailed Description

The light and heavy materials referred to in the following content refer to light materials and heavy materials with larger weight, and the heavy materials with larger weight refer to the heavy materials which fall into the material accumulation assembly after being separated from the light materials in air separation.

As shown in fig. 1 to 12, the utility model discloses a dispersion type air separator, including dispersion type feeder hopper A, casing B, take transport mechanism C, separator module D, blast apparatus E, first adjustment mechanism F, scrape subassembly G, return air device, long-pending material subassembly K, the following is to every part and the relation between every part carries out the detailed description:

as shown in fig. 1 to 5, the dispersive feeding hopper a is installed at the top of the casing B, and the output end of the material conveying mechanism except the dispersive air separator is located at the top of the casing B or above the casing B, therefore, the feeding of the dispersive air separator of the utility model is located at the top of the whole machine.

As shown in fig. 1 to 5, the dispersive hopper a drops the material onto the belt conveyor C in a dispersed manner, with the output end of the dispersive hopper a being located above the belt conveyor C. The structure and working mechanism of the dispersion type feed hopper A are explained in detail as follows:

as shown in fig. 1 to 5, the dispersive feeding hopper a comprises a feeding hopper body 1 and a receiving mechanism, wherein a feeding port 3 is arranged on the feeding hopper body 1, and the feeding port 3 is used for inputting materials before air separation. In this embodiment, preferably, the feeding hopper body 1 further includes a cover body 1a located at one side of the feeding port 3 for covering dust, and the dust suction component 2 is arranged on the cover body 1 a.

As shown in fig. 1 to 5, the lower part of the feeding hopper body 1 is generally a belt conveying mechanism C for receiving materials, when the materials are taken from the utility model discloses a directly fall on the belt conveying mechanism C after the output of the dispersion type winnowing machine, because the dust can be contained in the rubbish generally, therefore, the effect of shielding through the cover body 1a can avoid the dust to fly upward all around, and the induced air effect produced by the dust collection part 2 makes the dust be guided away by the dust collection part.

As shown in fig. 1 to 5, the receiving mechanism comprises a receiving part 4 and one or more material dispersing parts 9 for dispersing materials, the receiving part 4 is provided with a receiving surface d for guiding the materials to move, at least one part of the receiving part 4 is positioned in the feed inlet 3, the receiving part 4 is matched with the feed hopper body 1, and an included angle formed between the receiving surface d of the receiving part 4 and the axial direction of the feed inlet 3 is smaller than 90 degrees, so that the receiving surface d is arranged in an inclined state, and when the materials fall on the receiving surface d, the materials slide from top to bottom along the receiving surface d. Because the material disperses around after colliding with material receiving component 4, the material receiving component 4 of consequently slope is favorable to dispersing the material.

As shown in fig. 1 to 5, the material dispersing component 9 is disposed on the material receiving surface d of the material receiving component 4, and for the material falling on the material receiving surface d, due to the existence of the material dispersing component 9, the moving material is forced to be dispersed along the material dispersing component 9, so as to avoid the material from falling concentratedly at a certain position on the belt conveying mechanism C, and the winnowing material falls dispersedly on the belt conveying mechanism C, so that on one hand, dust removal is facilitated, and on the other hand, no stacked state exists on the belt conveying mechanism C, thereby improving the material transverse distribution uniformity and the winnowing success rate.

As shown in fig. 1 to 5, in the present embodiment, the width of the material dispersing member 9 from one end to the other end is gradually increased, and the middle portion of the material dispersing member 9 is raised so that the surfaces located on both sides of the middle portion of the material dispersing member 9 are formed into radial dispersing surfaces, and the material dispersing member 9 is preferably formed into a cone shape. The dispersing member 9 of this structure is advantageous for better dispersion of the material.

As fig. 1 to 5, in order to guide the material better to reduce the impact force that the material produced to taking transport mechanism C when falling on taking transport mechanism C, the utility model discloses still include the skirt section 8 that cushions and guides the material after being received the receiving mechanism dispersion, the one end of skirt section 8 is fixed with hopper body 1, and the other end of skirt section 8 is the discharge end, and the ejection of compact direction of receiving material part 4 is in opposite directions with the ejection of compact direction of skirt section 8.

As shown in fig. 1 to 5, the surface of the skirt portion 8 is also an inclined surface which forms an angle of less than 90 ° with the axial direction of the feed inlet 3, and a part of the skirt portion 8 is located in the feed inlet 3, so that the skirt portion 8 provides a buffering effect on materials output from the receiving mechanism when the skirt portion 8 receives the materials.

As shown in fig. 1 to 5, another portion of the skirt portion 8 extends to the outside of the feed opening 3, so that the distance between the discharge end of the skirt portion 8 and the belt conveyor C is shortened, and the effect of reducing the impact force of the material on the belt conveyor C is achieved. The part of the skirt 8 extending outside the feed opening 3 is in the form of a barrier, which also has a shielding effect on dust.

As fig. 1 to 5, the utility model discloses still including adjusting the adjustment mechanism who connects 4 inclination of material part, connect material part 4 to form swing joint through adjustment mechanism and feeder hopper body 1. The inclination angle of the material receiving part 4 is adjusted through the adjusting mechanism, so that the pneumatic winnowing machine can be suitable for winnowing of different materials or different winnowing speeds.

As shown in fig. 1 to 5, in the present embodiment, the adjusting mechanism includes a supporting member 13, a sliding shaft 16, and a driver for driving the sliding shaft 16 to move, the supporting member 13 is connected to the feeding hopper body 1, and the receiving member 4 is engaged with the supporting member 13; the sliding shaft 16 is connected with the material receiving part 4, a sliding cavity a is arranged on the side wall of the feed hopper body 1, and two ends of the sliding shaft 16 are matched with the sliding cavity a; the driver is connected to a slide shaft 16.

Referring to fig. 1 to 5, in this embodiment, the material receiving member 4 is preferably a plate-shaped member, the supporting member 13 is preferably a shaft-shaped member, and both ends of the supporting member 13 are respectively fixed to the hopper body 1. At least a part of the sliding shaft 16 and the driver are positioned in the cover body 1a, a rotating plate seat 15 is arranged on the material receiving component 4, a through hole is arranged on the rotating plate seat 15, and the sliding shaft 16 penetrates through the through hole on the rotating plate seat 15, so that the sliding shaft 16 is connected with the material receiving component 4.

As shown in fig. 1 to 5, the sliding cavity a is formed in the side wall of the cover body 1a, the sliding cavity a preferably adopts a strip-shaped hole, the sliding shaft 16 is in clearance fit with the sliding cavity a, when the sliding shaft 16 moves along the sliding cavity a, the sliding shaft 16 drives one end of the material receiving component 4 to move, and since the material receiving component 4 is supported by the supporting component 13, when the material receiving component 4 moves, the inclination angle of the material receiving component 4 is adjusted.

As shown in fig. 1 to 5, a blocking axle arch 14 for limiting the moving range of the supporting component 13 is arranged on the receiving component 4, and the supporting component 13 passes through the blocking axle arch 14. Keep off the axle arch 14 by the arch and connect in the blocking part at arch both ends and constitute, blocking part and material receiving part 4 fixed connection back, keep off the axle arch 14 and connect the hole of stepping down of formation between material receiving part 4, support component 13 passes the hole of stepping down, and support component 13's diameter is less than the height in the hole of stepping down, consequently, when material receiving part 4 removes, if keep off the blocking part on the axle arch 14 and support component 13 when supporting, then material receiving part 4 can't continue to remove, consequently, material receiving part 4's moving range is the interval between two blocking parts.

As shown in fig. 1 to 5, the driver comprises a pull rod 17, a screw shaft 19 and a support sleeve 22, one end of the pull rod 17 is connected with the sliding shaft 16, and the other end of the pull rod 17 is provided with a nut 18; one end of the screw shaft 19 is provided with a screw thread, and the screw thread at one end of the screw shaft 19 is in threaded connection with the nut 18 on the pull rod 17; the other end of the pull rod 17 is provided with an inner cavity b, the inner cavity b is a step hole, the nut 18 is located in a large-diameter hole of the inner cavity b, the other end of the screw shaft 19 is provided with a guide column c, and the guide column c is in clearance fit with the small-diameter hole of the inner cavity b.

Referring to fig. 1 to 5, the supporting sleeve 22 is fixed to the feeding hopper body 1, the screw shaft 19 passes through the supporting sleeve 22, the supporting sleeve 22 is internally provided with a sliding sleeve 25, the screw shaft 19 passes through the sliding sleeve 25, the screw shaft 19 is provided with limiting components positioned at two ends of the supporting sleeve 22, and the limiting components are matched with the end part of the supporting sleeve 21. Because the two ends of the screw shaft 19 are limited by the limit components and can not move axially, the screw shaft 19 and the pull rod 17 form a screw mechanism, when the screw shaft 19 rotates, the pull rod 17 moves linearly, and the pull rod 17 drives the material receiving component 4 to move through the sliding shaft 16.

As shown in fig. 1 to 5, the limiting assembly includes a limiting protrusion provided on the circumferential surface of the screw shaft 19, the limiting protrusion being located at one side of the support sleeve 21, the limiting protrusion being integrally formed with the screw shaft 19. The limiting component also comprises a round nut 21 and a semicircular plate 24 which are positioned at the other side of the supporting sleeve 21, the screw shaft 19 passes through the round nut 21 and the semicircular plate 24, and the round nut 21 and the semicircular plate 24 can be fixed with the supporting sleeve 21 or the feed hopper body 1. A hand wheel 23 is fixed at the end part of the screw shaft 19, and the hand wheel 23 rotates the screw shaft 19 to adjust the inclination angle of the material receiving component 4, so that the inclination angle of the material receiving component 4 is adjusted to 40-50 degrees.

As shown in fig. 1 to 5, the adjusting mechanism further includes axial limiting members 10 disposed at both ends of the sliding shaft 16, and a positioning member 11 engaged with the limiting members 10 to limit the sliding of the sliding shaft 16, wherein the positioning member 11 is fixed to the feeding hopper body 1, and the positioning member 11 is located outside the sliding cavity a.

As shown in fig. 1 to 5, the sliding shaft 16 can be prevented from being separated from the sliding cavity a by the axial limiting component 10, the limiting component 10 is Y-shaped, and the limiting component 10 is connected with the sliding shaft 16 through threads. The positioning component 11 is preferably a strip-shaped component, and when the limiting component 10 abuts against the positioning component 11, the sliding shaft 16 is limited by the positioning component 11.

The working process of the dispersive feeding hopper A is as follows:

as shown in fig. 1 to 5, the material in the previous pass enters the feed port 3, collides with the receiving component 4 under the action of inertia and gravity, disperses the material in the collision process, forcibly disperses the material in the material flow center section due to the characteristics of the belt conveyor by the receiving surface d of the material dispersing component 9, uniformly falls on the main plate surface e of the skirt portion 8 after deceleration, collides with the main plate surface e again to obtain dispersion, falls on the belt conveying mechanism C after passing through the skirt portion 8, collides with the belt conveying mechanism C for the third time to obtain dispersion, and then enters the next pass. Therefore, the material is prevented from directly falling onto the belt conveying mechanism C to form a pile by the action of the receiving member 4 and the main plate surface e of the skirt portion 8.

The dust generated by the falling and collision of the material is collected in the collection chamber f of the cover body 1a and is discharged by the dust suction member 2.

According to the material components, the feeding speed and the flow, the hand wheel 23 can be rotated to drive the screw shaft 19 to rotate, and the screw shaft 19 and the pull rod 17 form a screw rod mechanism, so that the pull rod moves linearly when the screw shaft 19 rotates, and the sliding shaft 16 moves in the sliding cavity a, and the angle between the whole material receiving component 4 and the skirt part 8 is changed. The screw threads on the screw shaft 19 and the pull rod 17 are both trapezoidal threads, so that the handle 22 stops rotating under the self-locking action of the trapezoidal screw pair, and the material receiving component 4 keeps constant in position, thereby realizing random adjustment as required and adapting to production requirements.

As shown in fig. 1, fig. 8 and fig. 9, a cavity is provided in the casing B, the casing B of the present invention includes an outer casing 30 and an inner support 31, the cavity is a cavity in the outer casing 30, the inner support 31 is located in the cavity, a first assembling hole 32 is provided on the inner support 31, and the support 31 is used for supporting or connecting the belt conveying mechanism C, the separating assembly D, and the blowing device E.

An accommodating groove 35, a bracket 36 and a light material belt conveying mechanism 37 are arranged in the settling chamber 34, the accommodating groove 35 is supported on the bracket 36 and fixed with the bracket 36, the bottom of the accommodating groove 35 is hollow, the light material belt conveying mechanism 37 is installed on the bracket 36, and the light material belt conveying mechanism 37 is matched with the bottom of the accommodating groove 35.

As shown in fig. 1 and 6, at least a part of the belt conveying mechanism C is located in the cavity of the housing B, the utility model discloses in, the whole belt conveying mechanism C is located the cavity of the housing B, the belt conveying mechanism C is located below the skirt section 8 of the dispersive feeding hopper a, the material from the slide-out of the skirt section 8 directly reaches the belt conveying mechanism C, the belt conveying mechanism C is composed of a first motor 40, a first speed reducer 41, a belt transmission mechanism 42 and a support frame 43, wherein, the output end of the first motor 40 is connected with the input end of the first speed reducer 41, the output end of the first speed reducer 41 is connected with the belt transmission mechanism 42, the belt transmission mechanism 42 is installed on the support frame 43, the support frame 43 is in sliding fit with the inner support frame 31, and when the belt conveying mechanism C receives pushing force or pulling force, the belt conveying mechanism C can slide along the inner support frame 31.

As shown in fig. 1, 7 to 9, the separating assembly D is located in the cavity of the housing B, the separating assembly D is a rotating separating assembly, the separating assembly D is located downstream of the belt conveying mechanism C, the separating assembly D includes a second motor 44, a second speed reducer 45, a mounting seat 46 and a distributing roller 47, the second motor 44 is connected to an input end of the second speed reducer 45, the second speed reducer 45 is fixed on the mounting seat 46, an output end of the second speed reducer 45 is connected to the distributing roller 47, the distributing roller 47 is rotatably mounted on the mounting seat 46, and the mounting seat 46 is fixed to the inner bracket 31.

As shown in fig. 1, 7, 8 and 11, a blowing device E is located in the cavity of the housing B, the blowing device E includes a blower 50, a blowing nozzle 51, a swing arm 52 and a first driving assembly, and an output end of the blower 50 is connected with the blowing nozzle 51; the fan 50 is a centrifugal fan, in order to reasonably utilize the space in the shell B and avoid increasing the volume of the winnowing machine, the fan 50 is preferentially arranged below the belt conveying mechanism C, and the output end of the fan 50 is connected with the blowing nozzle 51 through a pipeline.

As shown in fig. 1, 7 to 9, the swing arm 52 is hinged to the housing B or the separating assembly D, in this embodiment, the swing arm 52 is preferably hinged to the mounting base 46, the swing arm 52 is composed of a first connecting section and a second connecting section, one end of the first connecting section is hinged to the mounting base 46, and after the other end of the first connecting section is fixed to the second connecting section, an included angle is formed between the first connecting section and the second connecting section, so that the swing amplitude of the swing arm 52 can be conveniently controlled during adjustment, and the airflow direction of the blowing nozzle 51 can be easily tangent to the circumferential surface of the distributing roller 47.

As shown in fig. 1, 7 to 9, a first adjusting mechanism for adjusting a distance between the blowing nozzle 51 and the separating assembly D is disposed on the swing arm 52, the blowing nozzle 51 is connected to the swing arm 52 through the first adjusting mechanism, the first adjusting mechanism includes a first hole 53, a second hole 54, and a plurality of first locking members (not shown), in this embodiment, a folded portion 52a is disposed inside the swing arm 52, the first hole 53 and the second hole 54 are disposed on the folded portion 52a, preferably, the first hole 53 and the second hole 54 are disposed in a staggered manner, the first hole 53 and the second hole 54 are both strip-shaped holes, the first locking members pass through the first hole 53 and the second hole 54 respectively to be connected to the blowing nozzle 51, so that the blowing nozzle 51 and the swing arm 52 are fastened together, and the first locking members preferably use screws.

As shown in fig. 1 and 7 to 9, the first adjusting mechanism of the present invention adjusts the distance between the blowing nozzle 51 and the separating assembly D to change the tangential magnitude of the airflow output from the blowing nozzle 51, i.e., the smaller the distance between the blowing nozzle 51 and the separating assembly D, the larger the tangential force of the airflow output from the blowing nozzle 51 on the separating assembly D, the larger the distance between the blowing nozzle 51 and the separating assembly D, and the smaller the tangential force of the airflow output from the blowing nozzle 51 on the separating assembly D.

On the other hand, because heavy material can descend downwards after colliding with separator assembly D, if the interval between blowing nozzle 51 and the separator assembly D is too small, then when heavy material whereabouts, lead to heavy material to pound easily on blowing nozzle 51, lead to damaging blowing nozzle 51, consequently, the utility model discloses a suitable distance is selected according to the characteristic of material to reach the effect that can make light and heavy material carry out the separation, can avoid blowing nozzle to be pounded again.

As shown in fig. 1, 7 to 9, the swing arm 52 is further provided with a second adjusting mechanism, and the first driving assembly cooperates with the second adjusting mechanism to adjust the height of the air blowing nozzle 51 and the air flow angle. The second adjustment mechanism includes a third hole 55 and a second lock member, the third hole 55 is provided on an outer wall surface of the swing arm 52, and the third hole 55 is preferably a strip-shaped hole.

As shown in fig. 1, 7 to 9, the first driving assembly includes a first lead screw 56, a first connecting seat 57 having a threaded hole, the first lead screw 56 is threadedly coupled to the threaded hole of the first connecting seat 57, and the second locking member passes through the first connecting seat 57 and the first assembling hole 32 and then is engaged with the third hole 55.

As shown in fig. 1, 7 to 9, since one end of the swing arm 52 is hinged to the mounting seat 46, when the first driving assembly drives the other end of the swing arm 52 to move up or down, the swing arm 52 is rotated, so that on one hand, the height of the air blowing nozzle 51 mounted on the swing arm 52 is changed, and on the other hand, the angle of the air flow output of the air blowing nozzle 51 is changed relative to the distributing roller 47. Through the adjustment, when the distance between the air blowing nozzle 51 and the separating assembly D is adjusted through the first adjusting mechanism to change, the flow direction of the air flow output by the air blowing device E is tangent to the circumferential surface of the separating assembly D through the adjusting action of the second adjusting mechanism and the first driving assembly, so that the air separation efficiency is ensured.

As shown in fig. 1, 10 and 11, in the present invention, the position of the belt transfer mechanism C is adjusted by the first adjusting mechanism F so that the material output from the belt transfer mechanism C collides with the separating assembly D, and in this embodiment, the collision of the material with the separating assembly D is the fourth time, and the dispersion can be obtained as well. The first adjusting mechanism F is respectively connected with the shell B and the belt conveying mechanism C, the flow direction of air flow output by the air blowing device E is tangent to the peripheral surface of the separating assembly D, when materials output by the belt conveying mechanism C collide with the separating assembly D, light materials move along the circumferential direction of the separating assembly D under the action of air flow pushing and the rotation of the separating assembly D, and the collided heavy materials move in a free falling mode under the action of self gravity.

As shown in fig. 1, 10 and 11, the materials are scattered by the dispersive feed hopper a and fall onto the belt conveying mechanism C, and are conveyed to the separation assembly D through the belt conveying mechanism C, and light and heavy material separation is required to be completed at the separation assembly D. The utility model discloses in, adjust the back through the position of a regulating mechanism F area transport mechanism C output, make the material of taking transport mechanism C to go up the output and the branch material roller 47 among the separable set D form the collision, the advantage that this kind of relation brought as follows:

(1) The distance between the output end of the belt conveying mechanism C and the distributing roller 47 is controlled as required, after the materials collide with the distributing roller 47, the distances between the materials and the distributing roller 47 are very close, even some materials are attached to the surface of the distributing roller 47, the flow direction of the air flow output by the air blowing device E is tangent to the peripheral surface of the separating assembly D, and the light materials move along with the distributing roller 47 under the common acting force of the air flow and the distributing roller 47, so that the collision relation not only depends on the air flow blown out by the air blowing nozzle to separate the light materials and the heavy materials, but also takes the light materials away by the common acting force of the air flow and the distributing roller 47, and the separation effect is improved. The utility model is particularly suitable for the selection by winnowing of building rubbish. The utility model has the advantages that: improve the success rate of material selection by winnowing and separation, guarantee the whole operating speed of production line. The adaptability to different materials is expanded, and the influence of dust particles on the normal operation of the equipment is reduced.

(2) And after the materials collide, the potential energy of the heavy materials is reduced, so that when the heavy materials fall downwards freely, the initial speed of the heavy materials is reduced, and the risk of smashing other parts is reduced.

(3) Because the position of the output end of the belt conveying mechanism C is adjustable, and the material output from the belt conveying mechanism C collides with the material distributing roller 47, the phenomenon that the material output from the belt conveying mechanism C directly falls on the air blowing nozzle 51 to break the air blowing nozzle 51 is avoided.

The utility model discloses in, first adjustment mechanism F adjusts the back to area transport mechanism C, and the position that the material of taking transport mechanism C output and separator module D collision is the well upper portion of separator module D, and preferred collision position is located the well upper portion of branch material roller 47 promptly, and the collision is after taking place this position, because the centrifugal force of branch material roller 47 and the effort of air current, makes the light material more easily along with the motion of branch material roller 47 to make the effect of selection by winnowing better.

As shown in fig. 1, 10 and 11, the first adjusting mechanism F includes a lifting bracket 60, a first driving mechanism 61, and a second driving mechanism 62, one end of the lifting bracket 60 is connected to the belt conveying mechanism C, the other end of the lifting bracket 60 is hinged to the housing B, the first driving mechanism 61 drives the lifting bracket 60 to lift the belt conveying mechanism C, and the first driving mechanism 61 is connected to the lifting bracket 60; one end of the second driving mechanism 62 is connected to the housing B, that is, one end of the second driving mechanism 62 is connected to the inner bracket 31 of the housing B, and the other end of the second driving mechanism 62 is connected to the lifting bracket 60, and the second driving mechanism 62 drives the lifting bracket 60 to move so as to move the belt conveying mechanism C.

As shown in fig. 1, 10 and 11, when the first driving mechanism 61 is operated, the first driving mechanism 61 drives the belt conveying mechanism C to be raised or lowered, thereby changing the height of the output end of the belt conveying mechanism C. When the second driving mechanism 62 is operated, the second driving mechanism 62 drives the belt transfer mechanism C to move horizontally (the belt transfer mechanism C is slidably engaged with the inner bracket 31 of the housing B), thereby changing the distance between the output end of the belt transfer mechanism C and the dispensing roller 47 in the separating assembly D. When the first driving mechanism 61 and the second driving mechanism 62 both have an adjusting effect on the belt conveying mechanism C, the height, the horizontal position, and the discharging angle of the output end of the belt conveying mechanism C can be changed. Therefore, through the action of the first adjusting mechanism F, the materials output from the belt conveying mechanism C can be ensured to collide with the material distributing roller 47, and the aim of improving the winnowing efficiency is fulfilled.

As shown in fig. 1, 10 and 11, the lifting bracket 60 includes a first connecting frame 60a and a second connecting frame 60b, the first connecting frame 60a and the second connecting frame 60b are inserted to form a clearance fit, the first driving mechanism 61 is a linear driving mechanism, and the linear driving mechanism is connected to the first connecting frame 60a and the second connecting frame 60b respectively.

As shown in fig. 1, 10 and 11, one end of the second connecting frame 60b is provided with a plug hole, and the first connecting frame 60a is matched with the plug hole of the second connecting frame 60b in a plug way. The linear driving mechanism preferably adopts a screw rod mechanism, a screw rod of the screw rod mechanism is in rotatable fit with the first connecting frame 60a, a nut of the screw rod mechanism is connected with the second connecting frame 60b, the screw rod is in threaded connection with the nut, and threads on the screw rod and the nut are trapezoidal threads. The second link frame 60b is supported by the cooperation of the screw threads.

As shown in fig. 1, 10 and 11, the first adjusting mechanism F further includes a scale 64, the scale 64 is respectively installed on the second connecting frame 60b and the second driving mechanism 62, when the screw mechanism works to drive the second connecting frame 60b to move up or down relative to the first connecting frame 60a, the scale 64 moves up or down along with the second connecting frame 60b, so that the size of the lifting can be judged, when the second driving mechanism 62 drives the belt conveying mechanism C to move horizontally, the size of the horizontal movement can be judged, whether the position to be adjusted is appropriate can be obtained through calculation, and a basis is provided for accurate adjustment.

In the present invention, the second driving mechanism 62 also adopts a screw mechanism. The screw rod mechanism in the utility model can be manual or electric. The linear driving mechanism can also adopt linear driving components such as air cylinders, hydraulic cylinders and the like.

As shown in fig. 1 and 15 to 19, the air return device includes an air return component H, which forms the air return device together with the housing B and the blowing device E, the air return component H includes an air return input part 80, a first air return component 81, a second air return component 82 and an air return output part 83, the air return input part 80, the first air return component 81 and the second air return component 82 are arranged on the top of the housing B along the transverse direction of the housing B, and at least a part of the air return output part 83 is located in the cavity of the housing B.

As shown in fig. 1 and fig. 15 to 19, the input end of the return air input component 80 is matched with the settling chamber 34, the output end of the return air input component 80 is connected with the input end of the first return air component 81, the output end of the first return air component 81 is connected with the input end of the second return air component 82, the output end of the second return air component 82 is connected with the first input end of the return air output component 83, and the output end of the return air output component 83 is connected with the input end of the blowing device E.

As shown in fig. 1 and 15 to 19, the return air input component 80 includes a middle box 80a and a return air duct 80d, a filter screen 80b is installed at an input end of the middle box 80a, which is matched with the settling chamber 34, a first return air hole 80c is formed in the middle box 80a, and after the return air duct 80d is combined with the middle box 80a, the first return air hole 80c is matched with the return air duct 80 d. In this embodiment, two opposite sidewalls of the middle box 80a are provided with first air return holes 80c, and the air return ducts 80d are disposed at two sides of the middle box 80 a. During operation, airflow enters the middle box body 80a after being filtered by the filter screen 80b, and then enters the return air duct 80d through the first return air hole 80 c.

As shown in fig. 1, 15 to 19, the first wind return assembly 81 includes: a first air return channel 81a connected with the air return input component 80, a baffle 81c and a discharge valve component 81d, wherein the first air return channel 81a is connected with the air return channel 80d, the bottom of the first air return channel 81a is provided with a particle recovery port 81b, the baffle 81c is obliquely arranged in the first air return channel 81a and is fixed with the first air return channel 81a, and the baffle 81c is matched with the particle recovery port 81b to enable particles to be blocked by the baffle 81 c; one end of the discharge valve assembly 81d is connected to the particulate matter recovery port 81b, and the other end of the discharge valve assembly 81d is fitted to the settling chamber 34. In this embodiment, the number of the first wind-returning assemblies 81 is plural, and the first wind-returning assemblies 81 are spliced along the transverse direction of the housing.

During operation, the air current enters into first return air duct 81a by return air duct 80d, and the air current is in first return air duct 81a, because a part of air current can be blockked by baffle 81c, consequently, the particulate matter that contains in the air current enters into row material valve assembly 81d under the barrier action of baffle 81c to make some particulate matter get back to and subside in settling chamber 34, and then reduce the particulate matter that enters into blast apparatus E.

As shown in fig. 1 and fig. 15 to 19, the second air return assembly 82 includes a second air return duct 82a connected to the first air return assembly 81, and an inspection door 82c, and an inspection opening 82b is formed in the bottom of the second air return duct 82 a; one end of the inspection door 82c is hinged with the second air return duct 82 a; closing of the inspection door 82c forms a snap lock assembly that positions or releases the closing, which is secured to the second return air duct 82 a.

If the return air assembly H is blocked, the locking of the check door 82c is released through the quick lock assembly, and the blocked position can be observed through the check hole 82b, so that the blockage can be taken out.

As shown in fig. 1 and 15 to 19, the quick lock assembly includes a fixed seat 82d, a driving arm 82f, a locking tongue 82h, a positioning head 82i, and a handle 82g for rotating the driving arm 82f, one end of the fixed seat 82d is fixed to the second return air duct 82a, the other end of the fixed seat 82d is provided with a groove 82e, the driving arm 82f is hinged to the fixed seat 82d, the handle 82g is connected to the driving arm 82f, the locking tongue 82h is arranged on the handle 82g, and the positioning head 82i is fixed to the driving arm 82 f. The circumferential surface of the bolt 82h is arc-shaped, so that when the bolt 82h abuts against the groove 82e, a part of the bolt 82h abuts against the groove 82e, and the rest of the space of the groove 82e gives way for releasing the locking of the bolt 82 h. In operation, the handle 82g drives the driving arm 82f to rotate, and when the latch 82h is matched with the bottom of the groove 82e, the positioning head 82i abuts against and holds the inspection door 82 c.

As shown in fig. 1 and fig. 15 to 19, the return air output component 83 includes a main return air pipe 83a and an air supplement component 83b, an input end of the main return air pipe 83a is connected with the second return air component 82, an output end of the main return air pipe 83a is connected with an input end of the blowing device E, and an air supplement port is arranged on a side wall of the main return air pipe 83 a; one end of the air supply component 83b is matched with an air supply port on the main return air pipe 83a, and the other end of the air supply component 83b is a free end.

Under normal conditions, the air current loops through the return air input part 80, the first return air assembly 81, the second return air assembly 82 and the return air output part 83 to enter the blowing device E, if one of the return air input part 80, the first return air assembly 81 and the second return air assembly 82 is blocked, the air supplementing assembly 83b is opened when the blockage is judged according to the pressure difference or the air current flow rate signal, the air current enters the main return air pipe 83a through the air supplementing assembly 83b, and continuous operation of the equipment is ensured.

As shown in fig. 1 and 15 to 19, the accumulating assembly K is disposed below the separating assembly D, and torque generated when the second motor 44 operates is transmitted to the distributing roller 47 through the second speed reducer 45, so that the distributing roller 47 rotates. After the light and heavy materials are separated, the heavy materials fall into the material accumulation assembly K, the heavy materials separated from the separation assembly D fall on the material accumulation assembly K and form accumulation, and the heavy materials continuously separated from the separation assembly D collide with the accumulated materials.

As shown in fig. 1 and 15 to 19, the material accumulation assembly K comprises a surrounding barrier 90, a first material accumulation table 91 and a fastener, wherein the surrounding barrier 90 is circumferentially closed and has openings at two ends; the first material accumulation table 91 is positioned in the enclosure 90 and fixed with the enclosure 90; the second material accumulation table 92 is positioned below the first material accumulation table 91, the second material accumulation table 92 is positioned in the enclosure 90, and a waist-shaped hole is formed in the side wall of the enclosure 90; the fastener passes through the waist-shaped hole and is connected with the second material accumulation table 92, so that the second material accumulation table 92 and the enclosure 90 are fixed. Because the fastener cooperates with waist shape hole, consequently, the position of second long-pending material platform 92 can be adjusted, and the position of second long-pending material platform 92 is adjusted according to the condition of selection by winnowing material. Therefore, the impact on the enclosure 90 and the material accumulation table can be reduced, and the service life is prolonged. In addition, since the materials falling from the first material accumulation table 91 or the second material accumulation table 92 fall from the opening of the enclosure 90 onto the belt conveying mechanism (not shown in the figure) located below the opening, the first material accumulation table 91 and the second material accumulation table 92 buffer the heavy materials, so that the falling height of the heavy materials is reduced, and the impact of the heavy materials on the belt conveying mechanism is reduced.

The present invention is not limited to the above structure, for example:

as shown in fig. 2, the utility model discloses still include shield 12, shield 12 sliding fit is at feeder hopper body 1, after the angular adjustment of connecing material part 4 is good, and slip shield 12 makes shield 12 form to smooth chamber a to prevent that the dust from the departure of smooth chamber a department.

As figure 2, in order to facilitate the observation of the condition of the feed inlet, two relative observation windows 5 are arranged on the side wall of the feed hopper body 1, the observation windows 5 are positioned on one side of the feed inlet 3, and the condition in the feed inlet 3 can be conveniently observed through the observation windows 5. Still be equipped with access door 6 on the lateral wall of feeder hopper body 1, access door 6 is located the lateral part of feed inlet 3, when the inside trouble that breaks down of feed inlet 3, is convenient for overhaul through access door 6. A mounting flange seat 7 is arranged at the lower part of the feeding hopper body 1, and the whole feeding hopper is convenient to mount and fix through the mounting flange seat 7.

As shown in fig. 4, the actuator further includes a protective cover 20, the protective cover 20 is fitted over the screw shaft 19, one end of the protective cover 20 abuts against an axial end face of the pull rod 17, and the other end of the protective cover 20 is fitted with the support cover 21. Since the main body of the drive is located in the cover 1a and dust is guided through the cover 1a, the main body of the drive is shielded by the protective cover 20, and the main body of the drive is prevented from being damaged by dust.

In addition, the driver can adopt the structure, can also adopt linear driving components such as an air cylinder, an oil cylinder and the like, and can also adopt a gear rack linear mechanism.

As shown in fig. 12, the utility model discloses still include the scraping subassembly G that scrapes the dirty mark that separates subassembly D surface adhesion, scraping subassembly G sets up in separating subassembly D's lateral part. The scraping component G comprises a scraper 70 and a scraper seat 71, the scraper seat 71 is connected with the inner support 31, one end of the scraper 70 is fixed with the scraper seat 71, and the other end of the scraper 70 is in clearance fit with the circumferential surface of the distributing roller 47 in the separating component D. When the distribution roller 47 rotates, the dirt attached to the circumferential surface of the distribution roller 47 is scraped off by the scraper 70.

As shown in fig. 13 and 14, the blowing device E of the present invention is different from the above embodiment in that: one end of the swing arm 52 is hinged with the separating assembly D, and preferably, one end of the swing arm 52 is hinged with the journal part of the distributing roller 47. The other end of the swing arm 52 is hinged to the first assembling hole 32, the first assembling hole 32 is a strip-shaped hole, the first driving assembly comprises a first connecting component 58, an intermediate connecting component 59 and a second connecting component 58a, one end of the first connecting component 58 is connected with the other end of the swing arm 52, the other end of the first connecting component 58 is connected with one end of the intermediate connecting component 59, the other end of the intermediate connecting component 59 is connected with one end of the second connecting component 58a, and the other end of the second connecting component 58a is connected with the inner support 31.

As shown in fig. 13 and 14, the intermediate link 59 has a plurality of mounting holes at both ends thereof, and the first link 58 or the second link 58a is coupled to the mounting holes of the intermediate link 59 at different positions, so that the angle of the swing arm 52 and the height of the other end are at different positions.

As shown in fig. 13 and 14, at least one end of the first and second coupling parts 58 and 58a is hooked to facilitate quick coupling with the intermediate coupling part 59 for quick adjustment. In this embodiment, both ends of the first and second coupling parts 58 and 58a are hook-shaped.

According to the above-described modification, the angle of the swing arm 52 and the height of the other end can be changed by providing screw holes at both ends of the intermediate link member 59, and screwing the first link member 58 or the second link member 58a and the intermediate link member 59 to the screw holes.

As shown in fig. 13 and 14, the first adjusting mechanism F of the present invention can also adopt the following structure: the first adjusting mechanism F includes a lifting bracket 60, a first driving mechanism 61, a second driving mechanism 62, and a cable-stayed frame 63, one end of the lifting bracket 60 is connected with the belt conveying mechanism C, and the lifting bracket 60 in this embodiment has the same structure as the lifting bracket in the above-mentioned embodiment, and is not described herein again. The first driving mechanism 61 comprises a screw rod and a hand wheel, the hand wheel is fixed in the middle of the screw rod, a first thread is arranged at one end of the screw rod, a second thread is arranged at the other end of the screw rod, the first thread and the second thread rotate oppositely, two ends of the screw rod are respectively in threaded connection with the lifting support 60, and the lifting support 60 can be lifted by rotating the hand wheel.

As shown in fig. 13 and fig. 14, the other end of the lifting bracket 60 is slidably engaged with the casing B, the outer casing 30 of the casing B is provided with a sliding rail 33, after the lifting bracket 60 is slidably engaged with the sliding rail 33, the lifting bracket 60 is positioned on the sliding rail 33 by a fastening component, for example, the lifting bracket 60 is locked on the sliding rail 33 by using a screw, when adjustment is required, the screw is loosened, and after the adjustment is finished, the lifting bracket 60 is locked on the sliding rail 33 again by using the screw. The first driving mechanism 61 drives the lifting bracket 60 to lift so as to lift the belt conveying mechanism C, and the first driving mechanism 61 is connected to the lifting bracket 60.

As shown in fig. 13 and 14, one end of the second driving mechanism 62 is connected to the housing B, one end of the second driving mechanism 62 is connected to the inner bracket 31, the other end of the second driving mechanism 62 is connected to the lifting bracket 60, and the structure of the second driving mechanism 62 is the same as that of the first driving mechanism 61 in this embodiment, which is not described herein again.

As shown in fig. 13 and 14, the second driving mechanism 62 is located at a lower portion in the housing B and below the diagonal draw frame 63. The second driving mechanism 62 drives the elevating bracket 60 to slide on the housing B to move the belt transfer mechanism C. One end of the inclined pull frame 63 is hinged with the lifting bracket 60, and the other end of the inclined pull frame 63 is hinged with the belt conveying mechanism C.

As shown in fig. 13 and 14, a locking mechanism for locking the first connecting frame 60a and the second connecting frame 60b is provided on the lifting bracket 60, the locking mechanism is a locking screw 65, and is connected to the first connecting frame 60a through the locking screw 65, when locking is required, the locking screw 65 is rotated to abut against the second connecting frame 60b, and when loosening is required, the locking screw 65 is rotated reversely to separate the locking screw from the second connecting frame 60 b.

The structure of the diagonal frame 63 is the same as that of the lifting bracket 60, and will not be described herein.

According to the structure, the utility model also provides a sorting method, include:

s1, according to material characteristics, the position and the discharging angle of a belt conveying mechanism C are adjusted through a first adjusting mechanism F, so that materials output from the belt conveying mechanism C collide with a separating assembly D, the distance between a blowing nozzle 51 and the separating assembly D is adjusted through the first adjusting mechanism, the height and the airflow angle of the blowing nozzle 51 are adjusted through a second adjusting mechanism, and the flow direction of airflow output by a blowing device E is tangent to the peripheral surface of the separating assembly D; the material characteristics comprise the state, humidity and the like of the material, and the state refers to factors such as the size and density of the blocky material in the material. The above adjustment values can be obtained by combining multiple experiments.

And S2, after adjustment is finished, the material enters the feed inlet 3 of the dispersive feed hopper A and collides with the material receiving component 4 under the action of inertia and gravity, the thickened part formed by the characteristics of the belt conveyor in the central section of material flow is forcedly dispersed through the material receiving surface d of the material dispersing component 9, and the material uniformly falls on the main plate surface e of the skirt part 8 after speed reduction and then falls on the belt conveying mechanism C after passing through the skirt part 8.

S3, the materials output from the belt conveying mechanism C collide with the separating assembly D, after collision, the light materials move along the circumferential direction of the separating assembly D under the action of air flow pushing and the rotation of the separating assembly D, the collided heavy materials freely fall under the action of self gravity to move to enter the first material accumulating table 91 or the second material accumulating table 92 of the material accumulating assembly K, and the materials falling from the first material accumulating table 91 or the second material accumulating table 92 fall onto the belt conveying mechanism below the opening from the opening of the enclosure 90.

S4, the material distributing roller 47 rotates towards the settling chamber 34, so that the light materials are driven to enter the settling chamber 34 for settling; the material settled to the belt drive 42 is carried away by the belt drive 42.

And S5, allowing the airflow to sequentially pass through the return air input part 80, the first return air assembly 81, the second return air assembly 82 and the return air output part 83 and enter the blowing device E.

In the step S2, according to the material components, the feeding speed and the flow rate, the hand wheel 23 is rotated to drive the screw shaft 19 to rotate, and the screw shaft 19 and the pull rod 17 form a screw rod mechanism, so that the screw shaft 19 linearly moves when rotating, and the sliding shaft 16 moves in the sliding cavity a, so that the angle between the whole material receiving part 4 and the skirt part 8 is changed, and the dispersion force on the material and the output speed of the material from the dispersion type feed hopper a are adjusted.

Claims (8)

1. The air return device of the dispersive winnowing machine comprises a shell (B), a blowing device (E) and an air return assembly (H), wherein a cavity settling chamber (34) is arranged in the shell (B), and is characterized in that the air return assembly (H) comprises an air return input component (80), a first air return assembly (81), a second air return assembly (82) and an air return output component (83), the air return input component (80), the first air return assembly (81) and the second air return assembly (82) are transversely arranged at the top of the shell (B) along the shell (B), and at least one part of the air return output component (83) is positioned in a cavity of the shell (B);

the input and the cooperation of deposit room (34) of return air input component (80), the output of return air input component (80) is connected with the input of first return air subassembly (81), the output of first return air subassembly (81) is connected with the input of second return air subassembly (82), the output of second return air subassembly (82) is connected with the first input of return air output component (83), the output of return air output component (83) is connected with the input of blast apparatus (E).

2. The return air device for a dispersion type winnowing machine according to claim 1, wherein the return air input part (80) comprises:

the filter screen (80 b) is installed at the input end, matched with the settling chamber (34), of the middle box body (80 a), and a first air return hole (80 c) is formed in the middle box body (80 a);

and the air return duct (80 d), after the air return duct (80 d) is combined with the middle box body (80 a), the first air return hole (80 c) is matched with the air return duct (80 d).

3. Air return device of a decentralized air classifier according to claim 1, characterized in that the first air return module (81) comprises:

a first air return channel (81 a) connected with the air return input component (80), wherein the bottom of the first air return channel (81 a) is provided with a particulate matter recovery port (81 b);

a baffle plate (81 c), the baffle plate (81 c) is obliquely arranged in the first air return channel (81 a) and is fixed with the first air return channel (81 a), and the baffle plate (81 c) is matched with the particle recovery port (81 b) to enable the particles to be blocked by the baffle plate (81 c);

a discharge valve assembly (81 d), one end of the discharge valve assembly (81 d) is connected with the particle recovery port (81 b), and the other end of the discharge valve assembly (81 d) is matched with the settling chamber (34).

4. The return air device of a decentralized air separator according to claim 1, characterized in that the second return air assembly (82) comprises:

a second air return duct (82 a) connected with the first air return component (81), wherein the bottom of the second air return duct (82 a) is provided with an inspection opening (82 b);

the inspection door (82 c), one end of the inspection door (82 c) is hinged with the second air return duct (82 a);

the closing of the inspection door (82 c) forms a quick lock assembly for positioning or releasing the closing, and the quick lock assembly is fixed with the second air return channel (82 a).

5. The return air system for a dispersion type winnowing machine according to claim 4, wherein the snap lock assembly comprises:

one end of the fixed seat (82 d) is fixed with the second air return duct (82 a), and the other end of the fixed seat (82 d) is provided with a groove (82 e);

the driving arm (82 f), the driving arm (82 f) is hinged with the fixed seat (82 d);

a handle (82 g) which enables the driving arm (82 f) to rotate, wherein the handle (82 g) is connected with the driving arm (82 f), and a bolt (82 h) is arranged on the handle (82 g);

a positioning head (82 i), the positioning head (82 i) being fixed to the driving arm (82 f);

the handle (82 g) drives the driving arm (82 f) to rotate, and when the bolt (82 h) is matched with the groove bottom of the groove (82 e), the positioning head (82 i) is abutted against and held by the inspection door (82 c).

6. The return air device of the dispersion type air separator according to claim 1, wherein the return air output part (83) comprises:

the input end of the main air return pipe (83 a) is connected with the second air return component (82), the output end of the main air return pipe (83 a) is connected with the input end of the blowing device (E), and an air supplementing port is arranged on the side wall of the main air return pipe (83 a);

one end of the air supply component (83 b) is matched with an air supply port on the main return air pipe (83 a), and the other end of the air supply component (83 b) is a free end.

7. The return air apparatus of the dispersion type winnowing machine according to claim 1, further comprising a material accumulation member (K) disposed below the separating member (D), wherein the heavy material separated from the separating member (D) falls on the material accumulation member (K) and forms a pile, and the heavy material continuously separated from the separating member (D) collides with the piled material.

8. Air return device for a decentralized air separator according to claim 7, characterized in that the accumulation module (K) comprises:

the enclosure (90) is closed in the circumferential direction, and openings are formed in the two ends of the enclosure (90);

the first material accumulation table (91), the first material accumulation table (91) is positioned in the enclosure (90) and is fixed with the enclosure (90);

the second material accumulation table (92) is positioned below the first material accumulation table (91), the second material accumulation table (92) is positioned in the enclosure (90), and a waist-shaped hole is formed in the side wall of the enclosure (90);

and the fastener penetrates through the waist-shaped hole to be connected with the second material accumulation table (92), so that the second material accumulation table (92) is fixed with the enclosure (90).

Images