CN220696918U

CN220696918U - Winnowing mechanism applicable to construction waste conveying belt

Info

Publication number: CN220696918U
Application number: CN202322345648.XU
Authority: CN
Inventors: 杨筱; 付江龙
Original assignee: Yunnan Kreat Engineering Machinery Equipment Co ltd
Current assignee: Yunnan Kreat Engineering Machinery Equipment Co ltd
Priority date: 2023-08-30
Filing date: 2023-08-30
Publication date: 2024-04-02
Anticipated expiration: 2033-08-30

Abstract

The utility model discloses a pneumatic separation mechanism suitable for a construction waste conveying belt, which comprises a pneumatic separation box, wherein a baffle installation frame is welded on the top surface of the pneumatic separation box, a first rotating shaft is installed in the baffle installation frame, a conveying roller is fixedly installed on the first rotating shaft, a motor frame is welded on the side wall of one side of the baffle installation frame, a driving motor is installed on the motor frame, the output end of the driving motor is connected with one end of the first rotating shaft, a conveying belt is sleeved between the two conveying rollers, a second rotating shaft is installed at the center of the top of an inner cavity of the pneumatic separation box, a first scattering roller is fixedly installed on the second rotating shaft, a third rotating shaft is symmetrically arranged below the second rotating shaft, and a second scattering roller is fixedly installed on the third rotating shaft. The beneficial effects are that: according to the utility model, the two groups of scattering mechanisms can be driven by the driving motor of the conveying belt to scatter the construction waste before the air separation, so that the air separation effect of the construction waste is effectively improved, the manufacturing cost and the power consumption of the device are reduced, and the practicability is higher.

Description

Winnowing mechanism applicable to construction waste conveying belt

Technical Field

The utility model relates to the technical field of construction waste treatment, in particular to a pneumatic separation mechanism suitable for a construction waste conveying belt.

Background

The building rubbish refers to dregs, waste soil, waste materials, sludge and other wastes generated in the process of constructing, paving or dismantling various buildings, structures, pipe networks and the like by construction units or individuals, and stones of the building rubbish often contain other light-material rubbish, such as wood dust, broken plastic bags and the like.

The prior art discloses the publication number: CN208066758U an adjustable construction waste wind selector mainly includes: a building waste inlet, a building waste aggregate outlet, a light sundry outlet, a dust collection port, a baffle plate, a conveyor belt, electric stirring equipment, an air supply outlet adjusting device and the like; the height of the partition plate can be adjusted, and the electric stirring equipment of the feeding port can be adjusted according to the separation requirement of light sundries, so that the electric stirring equipment of the feeding port has the main functions of preventing building waste from blocking the feeding port, and simultaneously, the building waste is uniformly spread, so that the air separation achieves a better effect; the air supply outlet adjusting device is mainly used for adjusting the air supply angle of the air inlet so as to achieve the optimal winnowing effect.

When the electric stirring device is used, the electric stirring device is used for scattering the construction waste led into the feeding port, so that the construction waste is better spread and is prepared for the next winnowing, but the electric stirring device is required to be provided with a driving motor, so that the manufacturing cost of the device is increased, the power consumption of the device during working is increased, and the electric stirring device is general in practicability.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides the pneumatic separation mechanism suitable for the construction waste conveying belt, which has the advantages that the two groups of the pneumatic separation mechanisms can be driven by the driving motor of the conveying belt to separate the construction waste before pneumatic separation, the pneumatic separation effect of the construction waste is effectively improved, the manufacturing cost and the power consumption of the device are reduced, and the practicability is stronger, so that the problems in the background technology are solved.

(II) technical scheme

In order to achieve the advantages that the driving motor of the conveying belt can be used for driving the two groups of scattering mechanisms to scatter the construction waste before the air separation, the air separation effect of the construction waste is effectively improved, the manufacturing cost and the power consumption of the device are reduced, and the practicability is stronger, the concrete technical scheme adopted by the utility model is as follows: the utility model provides a be applicable to construction waste conveyer belt selection by winnowing mechanism, includes the selection by winnowing case, the welding of selection by winnowing case top has the baffle mounting bracket, and installs first pivot in the baffle mounting bracket to fixed mounting has the conveying roller in the first pivot, baffle mounting bracket one side lateral wall welding has the motor frame, and installs driving motor on the motor frame to driving motor output connects first pivot one end, two conveyer belt has been cup jointed between the conveying roller, the second pivot is installed at selection by winnowing case inner chamber top central authorities, and fixed mounting has first roller that looses in the second pivot, second pivot below symmetry is provided with the third pivot of installing at selection by winnowing case inner chamber, and fixed mounting has the second roller that looses in the third pivot, first pivot one end fixed mounting has first drive wheel, second pivot one end fixed mounting has the second drive wheel, cup joint driving belt between first drive wheel and the second drive wheel, second pivot one end fixed mounting has first driving gear, two third pivot one end fixed mounting has first driven gear, and first driven gear intermeshing with first driven gear.

Further, a fourth rotating shaft positioned above the conveying belt is arranged on the inner side of the baffle mounting frame, a plurality of spreading plates are uniformly welded on the fourth rotating shaft, a second driving gear is fixedly arranged at one end of the first rotating shaft, a second driven gear is fixedly arranged at one end of the fourth rotating shaft, and the second driven gear and the second driving gear are meshed with each other.

Further, the oscillating axle is installed to baffle mounting bracket inboard, and fixedly connected with refining board one end on the oscillating axle to refining board other end fixed mounting has the connecting plate, be connected with a plurality of vibrating spring between connecting plate bottom surface and the selection by winnowing case top surface, connecting plate top surface symmetry welding has the semicircle board, first pivot both ends symmetry welding has the vibration to strike the pole, and vibration strikes pole one end fixed mounting and strikes the batting, and strikes batting and be located semicircle board top.

Further, centrifugal fan is fixed mounting to winnowing box one side lateral wall, and centrifugal fan output intercommunication is connected with blast pipe one end, winnowing box inner chamber one side fixed mounting has the air outlet, and the air outlet intercommunication is connected the blast pipe other end, light debris export has been seted up to winnowing box inner chamber opposite side lateral wall.

Further, control panel is installed to the selection by winnowing case lateral wall, and control panel and driving motor and centrifugal fan electric connection.

Further, a supporting plate is arranged on the inner side of the conveying belt.

Further, side baffles are symmetrically welded on the top surface of the refining plate.

(III) beneficial effects

Compared with the prior art, the utility model provides a winnowing mechanism suitable for a construction waste conveying belt, which comprises the following components

The beneficial effects are that:

(1) When the utility model is used, the driving motor arranged on the motor frame can be started to drive the first rotating shaft arranged on the inner side of the baffle mounting frame to rotate, the conveying rollers are fixedly arranged on the first rotating shaft, the conveying belt is sleeved between the two conveying rollers, the supporting plate is arranged on the inner side of the conveying belt, when the two conveying rollers drive the conveying belt to rotate, the construction waste materials can be transferred to the inner side of the baffle mounting frame, the second driving gear is fixedly arranged on the first rotating shaft, the fourth rotating shaft is arranged on the inner side of the baffle mounting frame, the second driven gear is fixedly arranged at one end of the fourth rotating shaft, the second driven gear is meshed with the second driving gear, so that the first rotating shaft can drive the fourth rotating shaft to reversely rotate, the paving plate fixedly arranged on the fourth rotating shaft rotates along with the rotation, the rotating paving plate can spread the construction waste materials which are stacked higher on the conveying belt, so as to prevent building rubbish materials from accumulating too intensively and being unfavorable for subsequent winnowing operation, meanwhile, a swinging shaft is arranged on the inner side of a baffle mounting frame, the swinging shaft is fixedly arranged on a refining plate, the other end of the refining plate is fixedly connected with a connecting plate, a plurality of vibrating springs are connected and arranged between the bottom surface of the connecting plate and the top surface of a winnowing box, semicircular plates are symmetrically and fixedly arranged on the top surface of the connecting plate, vibrating striking rods are symmetrically welded at two ends of a first rotating shaft, striking balls are fixedly arranged at one end of each vibrating striking rod, the vibrating striking rods and the striking balls can be alternately struck on the semicircular plates when driven by the first rotating shaft to rotate, the refining plate can vibrate and swing back along the swinging shaft under the elastic action of the vibrating springs, when building rubbish materials fall on the refining plate, the building rubbish materials can be evenly spread under the vibrating action of the refining plate, the dust can enter the inner cavity of the winnowing box more uniformly, so that the winnowing effect of the subsequent building rubbish can be improved.

(2) The utility model is provided with a first breaking roller and a second breaking roller, a second rotating shaft is arranged in the winnowing box, and the second rotating shaft is fixedly provided with a first dispersion roller, the two sides below the first dispersion roller are symmetrically provided with third rotating shafts, and the third rotating shaft is fixedly provided with a second scattering roller, when the first rotating shaft rotates, the first rotating shaft is fixedly provided with a first driving wheel, a second driving wheel is fixedly arranged at one end of the second rotating shaft, a driving belt is sleeved between the first driving wheel and the second driving wheel, so the first rotating shaft can drive the second rotating shaft to rotate, the second rotating shaft can drive the first scattering roller to rotate, the construction waste led into the inner cavity of the winnowing box can be scattered to two sides by the first scattering roller, and because one end of the second rotating shaft is fixedly provided with the first driving gear which is meshed with the first driven gears fixedly arranged at one ends of the two third rotating shafts, so that the two third rotating shafts can rotate under the drive of the second rotating shafts, the second scattering rollers fixedly arranged on the third rotating shafts rotate along with the third rotating shafts, the falling construction waste materials are further scattered, the scattered construction waste materials continue to fall, at the moment, the centrifugal fan is started to guide the air to the air outlet through the air supply pipe, the construction waste materials which are evenly dispersed and fallen down can be subjected to winnowing operation, light sundries in the stones are winnowed and blown to the light sundry outlet for guiding out, and the heavier stones are continuously fallen down for collection, in the process, the utility model provides a be applicable to construction waste conveyer belt selection by winnowing mechanism can utilize the driving motor of conveyer belt to drive two sets of mechanisms of scattering and break up the construction waste before the selection by winnowing, has effectively improved construction waste's selection by winnowing effect, and has reduced the manufacturing cost and the power consumption of device, and the practicality is stronger.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a construction waste conveyor belt winnowing mechanism according to an embodiment of the present utility model;

FIG. 2 is a side cross-sectional view of a winnowing mechanism suitable for use with a construction waste conveyor belt according to an embodiment of the utility model;

FIG. 3 is an enlarged view at A of FIG. 1 according to an embodiment of the present utility model;

FIG. 4 is an enlarged view at B of FIG. 1 according to an embodiment of the present utility model;

FIG. 5 is an enlarged view at C of FIG. 1 according to an embodiment of the present utility model;

FIG. 6 is an enlarged view at D of FIG. 2 according to an embodiment of the utility model;

fig. 7 is a perspective view of a vibrating knock-out rod suitable for use in a building waste conveyor belt winnowing mechanism in accordance with an embodiment of the present utility model.

In the figure:

1. a winnowing box; 2. an air supply pipe; 3. a centrifugal fan; 4. baffle mounting frame; 5. a fourth rotating shaft; 6. paving a material plate; 7. a conveyor belt; 8. a conveying roller; 9. a first rotating shaft; 10. a motor frame; 11. a driving motor; 12. a drive belt; 13. a light sundry outlet; 14. a first dispersion roller; 15. a second break-up roller; 16. an air outlet; 17. a support plate; 18. a second rotating shaft; 19. a third rotating shaft; 20. a first driving wheel; 21. a second drive gear; 22. a second driven gear; 23. a second driving wheel; 24. a first drive gear; 25. a first driven gear; 26. vibrating the knocking rod; 27. striking a ball; 28. a semicircular plate; 29. a refining plate; 30. side baffles; 31. a connecting plate; 32. a vibration spring; 33. and a swinging shaft.

Detailed Description

For the purpose of further illustrating the various embodiments, the present utility model provides the accompanying drawings, which are a part of the disclosure of the present utility model, and which are mainly used to illustrate the embodiments and, together with the description, serve to explain the principles of the embodiments, and with reference to these descriptions, one skilled in the art will recognize other possible implementations and advantages of the present utility model, wherein elements are not drawn to scale, and like reference numerals are generally used to designate like elements.

According to an embodiment of the utility model, a pneumatic separation mechanism suitable for a construction waste conveying belt is provided.

The utility model will be further described with reference to the accompanying drawings and the specific embodiments, as shown in fig. 1-7, a pneumatic separation mechanism suitable for a construction waste conveying belt according to the embodiment of the utility model comprises a pneumatic separation box 1, wherein a baffle mounting frame 4 is welded on the top surface of the pneumatic separation box 1, a first rotating shaft 9 is arranged in the baffle mounting frame 4, a conveying roller 8 is fixedly arranged on the first rotating shaft 9, a motor frame 10 is welded on the side wall of one side of the baffle mounting frame 4, a driving motor 11 is arranged on the motor frame 10, the output end of the driving motor 11 is connected with one end of the first rotating shaft 9, a conveying belt 7 is sleeved between the two conveying rollers 8, a second rotating shaft 18 is arranged at the center of the top of an inner cavity of the pneumatic separation box 1, a first pneumatic separation roller 14 is fixedly arranged on the second rotating shaft 18, a third rotating shaft 19 arranged in the inner cavity of the pneumatic separation box 1 is symmetrically arranged below the second rotating shaft 18, and the second scattering roller 15 is fixedly arranged on the third rotating shaft 19, the first driving wheel 20 is fixedly arranged at one end of the first rotating shaft 9, the second driving wheel 23 is fixedly arranged at one end of the second rotating shaft 18, the driving belt 12 is sleeved between the first driving wheel 20 and the second driving wheel 23, the first driving gear 24 is fixedly arranged at one end of the second rotating shaft 18, the first driven gears 25 are fixedly arranged at one ends of the two third rotating shafts 19, and the first driven gears 25 are meshed with the first driving gear 24, so that the driving motor 11 of the conveying belt 7 can be utilized to drive the two groups of scattering mechanisms to scatter the construction waste before winnowing, the winnowing effect of the construction waste is effectively improved, the manufacturing cost and the power consumption of the device are reduced, and the practicability is stronger.

In one embodiment, the inner side of the baffle mounting frame 4 is provided with a fourth rotating shaft 5 above the conveying belt 7, a plurality of spreading boards 6 are uniformly welded on the fourth rotating shaft 5, one end of the first rotating shaft 9 is fixedly provided with a second driving gear 21, one end of the fourth rotating shaft 5 is fixedly provided with a second driven gear 22, the second driven gear 22 and the second driving gear 21 are meshed with each other, and the purpose that the rotating spreading boards 6 are utilized to spread building rubbish materials stacked higher on the conveying belt 7 is achieved, so that the building rubbish materials are prevented from being stacked too intensively to be unfavorable for subsequent winnowing operation is achieved.

In one embodiment, oscillating axle 33 is installed to baffle mounting bracket 4 inboard, and fixedly connected with refining board 29 one end on the oscillating axle 33, and refining board 29 other end fixed mounting has connecting plate 31, connect between connecting plate 31 bottom surface and the selection by winnowing case 1 top surface and install a plurality of vibration spring 32, connecting plate 31 top surface symmetry welding has semicircle board 28, first pivot 9 both ends symmetry welding has vibration to strike pole 26, and vibration strikes pole 26 one end fixed mounting has strikes the ball 27, and strike ball 27 is located semicircle board 28 top, it is that the material falls into on refining board 29 to have played when building rubbish, can evenly tile under refining board 29's vibration effect, make its more even entering selection by winnowing case 1 inner chamber in the middle of, be favorable to improving the selection by winnowing effect of follow-up building rubbish.

In one embodiment, centrifugal fan 3 is fixed mounting to the lateral wall of winnowing box 1 one side, and centrifugal fan 3 output intercommunication is connected with blast pipe 2 one end, and winnowing box 1 inner chamber one side fixed mounting has air outlet 16, and the blast pipe 2 other end is connected in air outlet 16 intercommunication, and light debris export 13 has been seted up to winnowing box 1 inner chamber opposite side lateral wall, has played the effect of carrying out the selection by winnowing to the building rubbish material that falls into winnowing box 1.

In one embodiment, a control panel is mounted on the side wall of the winnowing box 1, and the control panel is electrically connected with the driving motor 11 and the centrifugal fan 3, so that the normal operation of the control device is achieved.

In one embodiment, a support plate 17 is provided inside the conveyor belt 7, which serves to support the construction waste material passing through the conveyor belt 7.

In one embodiment, side baffles 30 are symmetrically welded to the top surface of the refining plate 29 to prevent construction waste material from falling from both sides under vibration of the refining plate 29.

Working principle: the utility model is provided with a spreading plate 6 and a refining plate 29, when in use, a driving motor 11 arranged on a motor frame 10 is started to drive a first rotating shaft 9 arranged on the inner side of a baffle mounting frame 4 to rotate, a conveying roller 8 is fixedly arranged on the first rotating shaft 9, a conveying belt 7 is sleeved between the two conveying rollers 8, a supporting plate 17 is arranged on the inner side of the conveying belt 7, when the two conveying rollers 8 drive the conveying belt 7 to rotate, building rubbish materials can be transferred to the inner side of the baffle mounting frame 4, a second driving gear 21 is fixedly arranged on the first rotating shaft 9, a fourth rotating shaft 5 is arranged on the inner side of the baffle mounting frame 4, a second driven gear 22 is fixedly arranged at one end of the fourth rotating shaft 5, and the second driven gear 22 is meshed with the second driving gear 21, so that the first rotating shaft 9 can drive the fourth rotating shaft 5 to reversely rotate, the paving plate 6 fixedly arranged on the fourth rotating shaft 5 rotates along with the fourth rotating shaft, the rotating paving plate 6 can spread building rubbish materials which are piled higher on the conveying belt 7, so that the building rubbish materials are prevented from being piled too intensively to be unfavorable for subsequent winnowing operation, meanwhile, the inner side of the baffle mounting frame 4 is provided with the swinging shaft 33, the swinging shaft 33 is fixedly arranged on the homogenizing plate 29, the other end of the homogenizing plate 29 is fixedly connected with the connecting plate 31, a plurality of vibrating springs 32 are fixedly connected between the bottom surface of the connecting plate 31 and the top surface of the winnowing box 1, the top surface of the connecting plate 31 is symmetrically and fixedly provided with the semicircular plate 28, the two ends of the first rotating shaft 9 are symmetrically welded with the vibrating striking rods 26, one end of each vibrating striking rod 26 is fixedly provided with the striking balls 27, and the semicircular plates 28 can be alternately struck when the first rotating shaft 9 drives the vibrating striking rods 26 and the striking balls 27 to rotate, the utility model can make the refining plate 29 vibrate and swing back and forth along the swinging shaft 33 under the elastic force of the vibrating spring 32, when the building rubbish material falls on the refining plate 29, it can be evenly spread out under the vibrating action of the refining plate 29, so that it can more evenly enter the inner cavity of the winnowing box 1, which is beneficial to improving the winnowing effect of the following building rubbish, in addition, the utility model is provided with the first and second scattering rollers 14 and 15, the second rotating shaft 18 is installed in the winnowing box 1, the first scattering roller 14 is fixedly installed on the second rotating shaft 18, the third rotating shaft 19 is symmetrically installed on both sides below the first scattering roller 14, the second scattering roller 15 is fixedly installed on the third rotating shaft 19, when the first rotating shaft 9 rotates, the first driving wheel 20 is fixedly installed on the first rotating shaft 9, and the second driving wheel 23 is fixedly installed on one end of the second rotating shaft 18, and the first driving wheel 20 and the second driving wheel 23 are sleeved with the driving belt 12, so the first rotating shaft 9 can drive the second rotating shaft 18 to rotate, the second rotating shaft 18 drives the first scattering roller 14 to rotate, the construction waste guided into the inner cavity of the winnowing box 1 can be scattered to two sides by using the first scattering roller 14, and because one end of the second rotating shaft 18 is fixedly provided with the first driving gear 24 and one end of the two third rotating shafts 19 is fixedly provided with the first driven gears 25 which are meshed with each other, the two third rotating shafts 19 can rotate under the driving of the second rotating shafts 18, the second scattering roller 15 fixedly arranged on the third rotating shafts 19 rotates along with the second rotating shafts, the scattered construction waste material is further scattered, the scattered construction waste material continuously falls, and at the moment, the centrifugal fan 3 is started to guide the blown construction waste material into the air outlet 16 through the air supply pipe 2, and the construction waste material which is uniformly scattered down can be winnowed, light debris selection by winnowing blows to light debris export 13 export in the building stones, and heavier building stones then continue to fall down to collect, and this in-process, a be applicable to building rubbish conveyer belt selection by winnowing mechanism can utilize the driving motor 11 of conveyer belt 7 to drive two sets of mechanisms of breaking up and break up the building rubbish before the selection by winnowing, has effectively improved the selection by winnowing effect of building rubbish, and has reduced manufacturing cost and the power consumption of device, and the practicality is stronger.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The utility model provides a be applicable to construction waste conveyer belt selection by winnowing mechanism, includes selection by winnowing case (1), its characterized in that, selection by winnowing case (1) top surface welding has baffle mounting bracket (4), and installs first pivot (9) in baffle mounting bracket (4) to fixed mounting has conveying roller (8) on first pivot (9), motor frame (10) have been welded to baffle mounting bracket (4) one side lateral wall, and install driving motor (11) on motor frame (10) to first pivot (9) one end is connected to driving motor (11) output, two conveyer belt (7) have been cup jointed between conveying roller (8), second pivot (18) are installed at selection by winnowing case (1) inner chamber top central authorities, and fixed mounting has first pivot (14) on second pivot (18), second pivot (18) below symmetry is provided with third pivot (19) of installing at selection by winnowing case (1) inner chamber, and fixed mounting has second pivot (15) on third pivot (19), first drive wheel (20) are installed to first pivot (9) one end fixed mounting, second drive wheel (20) are cup jointed with first drive wheel (23), a first driving gear (24) is fixedly arranged at one end of the second rotating shaft (18), a first driven gear (25) is fixedly arranged at one end of the two third rotating shafts (19), and the first driven gears (25) are meshed with the first driving gear (24).

2. The air separation mechanism for the construction waste conveying belt is characterized in that a fourth rotating shaft (5) located above the conveying belt (7) is installed on the inner side of the baffle installation frame (4), a plurality of spreading plates (6) are uniformly welded on the fourth rotating shaft (5), a second driving gear (21) is fixedly installed at one end of the first rotating shaft (9), a second driven gear (22) is fixedly installed at one end of the fourth rotating shaft (5), and the second driven gear (22) is meshed with the second driving gear (21).

3. The winnowing mechanism for the construction waste conveying belt, according to claim 1, is characterized in that a swinging shaft (33) is installed on the inner side of the baffle installation frame (4), one end of a material homogenizing plate (29) is fixedly connected to the swinging shaft (33), a connecting plate (31) is fixedly installed at the other end of the material homogenizing plate (29), a plurality of vibrating springs (32) are installed between the bottom surface of the connecting plate (31) and the top surface of the winnowing box (1), semicircular plates (28) are symmetrically welded on the top surface of the connecting plate (31), vibrating striking rods (26) are symmetrically welded on the two ends of the first rotating shaft (9), striking balls (27) are fixedly installed at one end of the vibrating striking rods (26), and the striking balls (27) are located above the semicircular plates (28).

4. The air separation mechanism suitable for the construction waste conveying belt is characterized in that a centrifugal fan (3) is fixedly arranged on one side wall of the air separation box (1), one end of an air supply pipe (2) is connected with the output end of the centrifugal fan (3) in a communicating mode, an air outlet (16) is fixedly arranged on one side of an inner cavity of the air separation box (1), the air outlet (16) is connected with the other end of the air supply pipe (2) in a communicating mode, and a light sundry outlet (13) is formed in the other side wall of the inner cavity of the air separation box (1).

5. The winnowing mechanism for the construction waste conveying belt according to claim 1, wherein a control panel is arranged on the side wall of the winnowing box (1), and the control panel is electrically connected with a driving motor (11) and a centrifugal fan (3).

6. A pneumatic separation mechanism for conveyor belts for construction waste according to claim 1, characterized in that the conveyor belt (7) is provided inside with a support plate (17).

7. A pneumatic separation mechanism for conveyor belt of construction waste according to claim 3, wherein the top surface of the refining plate (29) is symmetrically welded with side baffles (30).