CN115582269A - Air separator for light matter in construction waste or demolition waste - Google Patents

Abstract

The invention relates to a wind separator for light materials in construction waste or demolition waste, which comprises a casing, the top side of the casing has a feed port, the side wall has an air outlet, and the bottom has a discharge port. The air outlet of the casing is equipped with a filter mechanism, and the bottom of the casing is located at the material outlet with a conveying air closing mechanism. The innovation is that the filter mechanism includes a flange casing, a geared motor and a disc filter. , the flange casing is arranged at the air outlet, and the flange casing is detachably connected to the outer wall of the casing, the disc filter is arranged at the air outlet of the casing, and the geared motor is arranged at the flange On the outer wall of the casing, and the power output shaft of the deceleration motor is connected to the disc filter. The upper part of the flange casing has an air outlet chamber, and the air outlet chamber is connected to the flange casing. The suction port is connected. The invention simplifies the structure of the product, not only avoids the entanglement of the long strip light material, but also reduces the operating failure rate and manufacturing cost.

Description

Air separator for light matter in construction waste or demolition waste

technical field

The invention relates to a winnowing machine, in particular to a winnowing machine for light materials in construction waste or demolition waste.

Background technique

The air separator for light matter of the present invention is used for separating and collecting light matter (plastics, paper scraps, leaves, etc.) in construction waste or demolition waste.

The structure of the existing light matter collector is to have a shell, and three passages of a feed inlet, a draft outlet and a bottom outlet are arranged on the housing. A filter mechanism is installed on the housing and located at the air outlet, and an air closing mechanism is provided at the outlet. The filter mechanism includes a geared motor, and a cylindrical filter drum driven by a geared motor. The cylindrical drum The outer periphery is wrapped with steel mesh, which can realize the filtration of light substances and dust, and one end of the filter drum is connected with the air exhaust port, which can realize the exhaust air from the inside of the drum. The interior of the filter drum is also designed with a fixed cylindrical inner cylinder. One end of the inner cylinder is connected to the blower through a steel pipe. There is a blowing port near the position, which can realize reverse blowing from the inside of the filter drum to the outside.

The specific working principle is as follows:

The flow direction of the wind is: through the exhaust device, the negative pressure is drawn from the exhaust port to the inside of the system. Since the conveying air closing mechanism is installed at the position of the bottom discharge port, the wind cannot circulate from here on, that is to say, the air enters from the feed port, passes through After rotating the filter screen of the filter drum, the air can flow from the inside of the filter drum to the outlet;

The flow of light material is: driven by the wind, the light material enters the system tangentially from the feed port, and under the action of the inertial force of the light material, it flows to the bottom discharge port, and most of it enters the conveying air-closing mechanism Then it is discharged; a small amount of light material will adhere to the outside of the filter screen of the filter drum under the action of wind force, because the filter drum is continuously rotating, and there is a blowing cavity inside it at a fixed position to blow air from the inside of the drum to the outside, that is, adhesion When the light material outside the drum rotates to the blowing position, the wind blown in the opposite direction blows away from the filter screen and enters the discharge system of the bottom conveying air closing mechanism.

The disadvantages of this structure are: Disadvantage 1: Since the filter drum is designed with an automatic rotation structure, there is also a fixed inner cylinder and a blowing chamber inside the drum. Design the installation shaft that is movably connected to the outside of the shell, and also design the roller that is movably connected to the inner cylinder. At the same time, in order to avoid leaving the inner cylinder and the air duct, the other end of the roller should be designed as a hollow structure, which is carried out by 8 rollers. The support makes the whole system more complicated, and the failure rate and production cost are higher.

Disadvantage 2: Because the air outlet draws air from one end of the drum, the airflow speed at the air outlet end of the filter drum is faster, and the other end is slower, so that light materials are gathered at the air outlet end of the drum driven by the air flow, and the filter screen is cleaned for reverse blowing It increases the difficulty and reduces the filtering efficiency of the filter screen.

Disadvantage 3: The cylindrical characteristics of the filter drum bury hidden dangers for some light materials, such as long strips of light materials, including coils, long cloth strips, long plastic films, etc. If they are wound outside the drum for more than one week, they will It is firmly wound on the drum and cannot be removed by reverse blowing, and has to be removed manually during the maintenance process, which reduces work efficiency and maintenance difficulty.

Contents of the invention

The object of the present invention is to provide a wind separator for construction waste or light matter in demolition waste that simplifies the structure of the product, not only avoids the winding of long light matter, but also reduces the operating failure rate and manufacturing cost.

In order to achieve the above object, the technical solution of the present invention is: a wind separator for light materials in construction waste or demolition waste, including a casing, a filter mechanism and a conveying and closing mechanism, and the top side of the casing has a feed inlet , the side wall has an air outlet, and the bottom has a material outlet, the inner space of the casing is a blanking chamber, the air outlet of the casing is provided with a filter mechanism, the bottom of the casing is located at the outlet There is a conveying air shut-off mechanism at the material port, and its innovation points are:

The filter mechanism includes a flange casing, a geared motor and a disc filter. The flange casing is arranged at the air outlet, and the flange casing is detachably connected to the outer wall of the casing. The disc filter It is arranged at the air outlet of the casing and the disc filter is rotatably matched with the air outlet. The deceleration motor is arranged on the outer wall of the flange casing, and the power output shaft of the deceleration motor is connected to the disc filter.

The upper part of the flange casing has an air outlet chamber, and the air outlet chamber communicates with the air suction port provided on the flange casing.

In the above technical solution, a shaft sleeve is provided at the center of the flange casing, a transmission shaft is provided on the power output shaft of the reduction motor, and the transmission shaft is arranged in the shaft sleeve, and the free end of the transmission shaft Connected with the disc filter, the air outlet chamber inside the flange casing is a fan-shaped air outlet chamber separated by a partition plate, and the two ends of the partition plate are in contact with the inner wall of the flange casing It is fixedly connected with the outer wall of the shaft sleeve.

In the above technical solution, the filter mechanism further includes a filter element reinforcing frame, the filter element reinforcing frame includes a reinforcing sleeve arranged at the center of the outer side of the disc filter, and is evenly arranged along the circumferential direction of the reinforcing sleeve while being fixed on the The reinforcing ribs on the disc filter, the power output shaft of the geared motor is provided with a transmission shaft, and the disc filter and the reinforcing sleeve are simultaneously set on the free end of the transmission shaft.

In the above technical solution, it also includes a reverse blowing mechanism, the reverse blowing mechanism includes a fan, and the lower part of the flange casing also has a blowing channel arranged separately from the air outlet chamber, and the flange casing There is a blowing outlet connected to the blowing channel on the top, and a reverse blowing inlet is provided on the outer wall of the flange casing, and the air outlet of the fan communicates with the blowing channel through the reverse blowing inlet.

In the above technical solution, the reverse blowing mechanism further includes an air inlet filter frame, and the air inlet filter frame is arranged at the air inlet of the fan.

In the above technical solution, it also includes a filter screen cleaning mechanism arranged at the lower part of the disc filter screen, the filter screen cleaning mechanism includes a scraper, a rolling brush and a rolling brush seat, and the scraper is arranged vertically on the disc filter. The inner side of the filter screen, the two ends of the rolling brush seat are fixedly connected with the inner wall of the casing and the scraper respectively, the rolling brush is rotatably supported on the rolling brush seat, and the two ends of the rolling brush are connected with the inner wall of the casing and the scraper. Plate swivel connection.

In the above technical solution, it also includes a light matter pre-filter mechanism arranged close to the disc filter, the light matter pre-filter mechanism includes a filter element support and a primary filter element, and the filter element support is arranged in the discharge chamber of the casing, so The primary filter element is installed on the filter element support, and the primary filter element is located in the middle and lower part of the blanking chamber and close to the discharge port.

In the above technical solution, the conveying air closing mechanism includes a conveying air closing cylinder, an air closing impeller and a driving motor, the conveying air closing cylinder is arranged at the bottom of the casing and is located at the discharge port, and the conveying air closing cylinder The inner cavity is connected with the blanking chamber, the air-closing impeller is set in the conveying air-closing cylinder and connected to it through the rotating shaft, the driving motor is arranged on the outer wall of the conveying-closing air cylinder, and the power output of the driving motor The shaft is drivingly connected with the transmission shaft.

In the above technical solution, the flange casing includes an annular casing, a fan-shaped inner plate and a sealing plate, the fan-shaped inner plate is arranged on the inner lower part of the annular casing, and the sealing plate is arranged on the outer side of the annular casing, The two partition plates and the fan-shaped inner plate inside the flange casing divide the interior of the flange casing into a fan-shaped air outlet chamber at the top and a semi-closed chamber at the bottom. A flange is provided around the air outlet, and the connecting flange provided on the annular casing is detachably connected to the flange of the casing through fasteners, and the air suction port is provided on the sealing plate, and the air suction port The periphery is provided with a flange edge matched with the air suction device.

In the above technical solution, the overall shell is in the shape of a volute, and an arc-shaped material guide plate is provided in the blanking chamber near the feed inlet, and observation windows are respectively provided on both sides of the shell.

The positive effects of the present invention are: after adopting the air separator for light matter in construction waste or dismantling waste of the present invention, since the filter mechanism of the present invention includes a flange casing, a geared motor and a disc filter, the method The blue casing is arranged at the air outlet, and the flange casing is detachably connected to the outer wall of the casing. The deceleration motor is arranged on the outer wall of the flange casing, and the power output shaft of the deceleration motor is connected with the disc filter.

The upper part of the flange casing has an air outlet chamber, and the air outlet chamber communicates with the air suction port provided on the flange casing;

The present invention replaces the drum-type filter element structure in the prior art by setting a disc-type filter screen, and the air outlet chamber in the upper part of the flange casing can allow the main air duct to circulate. The working principle of the present invention is:

The flow direction of the wind is: connect the exhaust device with the suction port on the flange casing, and use the suction device to perform negative pressure suction on the blanking chamber inside the casing from the suction port. Since the position of the bottom discharge port is installed There is a conveying air closing mechanism, the wind cannot flow directly from the discharge port, that is to say, the dusty gas that enters from the feed port and the light material is filtered by the disc filter, passes through the air outlet and flange of the casing. The air outlet chamber and the air suction port of the casing flow out,

The flow of light material is: driven by the wind, the light material enters the casing from the feed port tangentially, and under the action of the inertial force of the light material, flows to the bottom discharge port, and most of them enter the conveying gate. mechanism to discharge; a small amount of light material will adhere to the upper half of the disc filter under the action of wind force, because the lower part of the flange casing has no wind direction to flow out, that is, the light material transfers from the upper part of the disc filter to the lower part During the process, from having adsorption force to no adsorption force, there is a downward trend under the action of self-weight, and light materials can break away from the screen, and enter the bottom conveying air-closing mechanism under the action of wind force and self-weight to be discharged out of the casing, completing the light Substance winnowing.

The advantages of the present invention are as follows: First, the disc filter is used to replace the drum filter element structure in the prior art, which not only simplifies the structure, saves parts such as the inner cylinder and the blowing chamber, but also avoids the inner shaft sleeve and outer periphery of the drum. And structures such as the hollow end formed by 8 rollers greatly simplifies the product structure, reduces the operating failure rate and manufacturing cost; second, the upper part of the flange casing of the present invention has an air outlet chamber, and the air outlet chamber and The air suction port provided on the flange shell is connected. Therefore, the upper part of the flange shell of the present invention is ventilated, and the lower part is not ventilated, so that there will be no uneven air flow, so that light materials will not gather. The filter function of the disc filter is fully and effectively used, and it is beneficial for the light matter adhering to the disc filter to change from adsorption to non-adsorption when it rotates to the lower part of the flange casing, and can be absorbed by itself. Under the action of gravity, it falls into the conveying air shut-off mechanism and then is discharged. Compared with the traditional drum filter element structure, the disc filter structure of the present invention can avoid the entanglement of long strips of light materials and reduce the failure rate.

Description of drawings

Fig. 1 is a three-dimensional structural schematic diagram of a specific embodiment of the present invention;

Fig. 2 is a schematic diagram of the structure after removing the sealing plate and the side panel on one side of the casing in Fig. 1;

Fig. 3 is a schematic left view of Fig. 2;

Fig. 4 is a schematic right view of Fig. 3;

Fig. 5 is a schematic diagram of the assembly structure of the disc filter and the filter cleaning mechanism of the present invention;

Fig. 6 is another direction view of Fig. 5;

Fig. 7 is a schematic diagram of the three-dimensional structure of the flange housing of the present invention after removing the sealing plate;

Fig. 8 is a schematic diagram of the three-dimensional structure of the casing of the present invention.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and given embodiments, but is not limited thereto.

As shown in Figures 1, 2, 3, 4, 5, 6, 7, and 8, a light material winnowing machine in construction waste or demolition waste includes a casing 1, a filter mechanism 2 and a conveying and closing air mechanism 6, and The top side of the casing 1 has a feed inlet 11, the side wall has an air outlet 12, and the bottom has a discharge outlet 13, the inner space of the casing 1 is a blanking chamber, and the casing 1 The air outlet 12 is provided with a filter mechanism 2, and the bottom of the casing 1 is provided with a conveying air shutoff mechanism 6 at the outlet 13,

The filter mechanism 2 includes a flange casing 21, a geared motor 22 and a disc filter 23, the flange casing 21 is arranged at the air outlet 12, and the flange casing 21 is detachable from the outer wall of the casing 1 connected, the disc filter 23 is set at the air outlet 12 of the casing 1 and the disc filter 23 is in rotation with the air outlet 12, and the deceleration motor 22 is set on the outer wall of the flange casing 21 and decelerates The power output shaft of the motor 22 is connected with the disc filter screen 23 in transmission,

The upper part of the flange casing 21 has an air outlet chamber 211 , and the air outlet chamber 211 communicates with the air suction port 212 provided on the flange casing 21 .

As shown in Figures 2 and 6, in order to facilitate the rotation of the disc filter to make the rotation structure relatively simple, the center of the flange casing 21 is provided with a shaft sleeve 213, and the power output shaft of the reduction motor 22 is provided with There is a transmission shaft 221, and the transmission shaft 221 is arranged in the shaft sleeve 213, and the free end of the transmission shaft 221 is connected with the disc filter 23 in transmission, and the air outlet chamber 211 inside the flange casing 21 is composed of a The partition board 214 partitions the fan-shaped air outlet chamber, and the two ends of the partition board 214 are fixedly connected with the inner wall of the flange casing 21 and the outer wall of the shaft sleeve 213 . During the working process, the reduction motor 22 is driven, and the drive shaft drives the disc filter screen 23 to rotate, and the air is discharged from the fan-shaped air outlet chamber.

As shown in Figure 6, in order to strengthen the strength of the filter element, the filter mechanism 2 also includes a filter element reinforcement frame 24, and the filter element reinforcement frame 24 includes a reinforcement shaft sleeve 241 arranged at the center of the outer side of the disc filter screen 23, and along the The reinforcement shaft sleeve 241 is evenly arranged in the circumferential direction and is fixed on the reinforcement rib 242 on the disc filter screen 23. The power output shaft of the reduction motor 22 is provided with a transmission shaft 221, and the disc filter screen 23 and the reinforcement sleeve 241 are simultaneously It is sleeved on the free end of the transmission shaft 221.

As shown in Figure 7, the upper part of the flange casing 21 is air-out, and the lower part is not. The gas is sucked out, and when the filter screen continues to rotate to the lower part of the flange casing 21, it changes from having adsorption force to no adsorption force. In order to make the light substances on the filter screen fall into the blanking chamber, the present invention also includes a reverse blowing mechanism 3. The reverse blowing mechanism 3 includes a fan 31, and the lower part of the flange casing 21 also has a blowing channel 215 arranged separately from the air outlet chamber 211, and the flange casing 21 is provided with a blower The channel 215 communicates with the blowing outlet 216 , and the outer wall of the flange casing 21 is provided with a reverse blowing inlet, and the air outlet of the fan 31 communicates with the blowing channel 215 through the reverse blowing inlet. Therefore, the present invention utilizes the reverse blowing mechanism 3 to reversely blow the lower half of the disc filter screen 23, so that the light substances adhering to the filter screen are blown off, and the light substances will not gather, fully and effectively utilizing The filtering function of the disc filter can fall into the blanking chamber under its own gravity, and then be discharged from the conveying air closing mechanism.

As shown in FIG. 2 , in order to filter the incoming air of reverse blowing, the reverse blowing mechanism 3 further includes an air inlet filter frame 32 , and the air inlet filter frame 32 is arranged at the air inlet of the fan 31 .

As shown in Figure 5, in order to clean the filter screen and prevent too much light matter adhering to the filter screen from affecting the air outlet, a filter screen cleaning mechanism 4 arranged at the bottom of the disc filter screen 23 is also included. The net cleaning mechanism 4 includes a scraper 41, a rolling brush 42 and a rolling brush seat 43. The scraper 41 is arranged vertically on the inner side of the disc filter 23, and the two ends of the rolling brush seat 43 are connected to the casing respectively. The inner wall of 1 is fixedly connected with the scraper 41, the rolling brush 42 is rotatably supported on the rolling brush seat 43, and the two ends of the rolling brush 42 are rotatably connected with the inner wall of the casing 1 and the scraper 41. The scraper 41 can scrape off the light matter adhering to the filter screen, and the rolling brush 42 can clean the screen holes to prevent the screen from clogging.

As shown in Figures 2 and 8, in order to perform primary filtration on the light substances entering the casing 1 and improve the effect of the disc filter, the present invention also includes a light substance pre-filter mechanism 5 arranged near the disc filter 23, so The light matter pre-filter mechanism 5 includes a filter element support 51 and a primary filter element 52, the filter element support 51 is arranged in the blanking chamber of the casing 1, the primary filter element 52 is installed on the filter element support 51, and the primary filter element 52 is located in the drop chamber. The middle and lower part of the material chamber is close to the discharge port 13.

As shown in Figures 1, 2, 3, and 4, in order to block the flow of the wind and prevent the wind from flowing to the discharge port, the conveying air closing mechanism 6 includes a conveying air closing cylinder 61, an air closing impeller 62 and a drive motor 63. The conveying air closing cylinder 61 is arranged at the bottom of the casing 1 and is located at the discharge port 13, and the inner cavity of the conveying closing air cylinder 61 communicates with the blanking chamber, and the described air closing impeller 62 is arranged on the conveying air closing cylinder. 61 and is rotatably connected with it by a rotating shaft, the driving motor 63 is arranged on the outer wall of the conveying off air cylinder 61, and the power output shaft of the driving motor 63 is connected with the power transmission shaft. The air-closing impeller 62 is closely attached to the inner wall of the conveying air-closing cylinder 61, and the driving motor 63 directionally drives the air-closing impeller 62 to rotate. In the middle of the blade, the light material is transported outward through the grille in the middle of the blade, but it can block the flow of wind and prevent the wind from entering the interior of the equipment from the discharge port.

As shown in Figures 1 and 7, in order to make the filter structure of the present invention more compact and simple, and to reduce production costs and failure rates, the flange casing 21 includes an annular casing 21a, a fan-shaped inner plate 21b and a sealing plate 21c, The fan-shaped inner plate 21b is arranged on the inner lower part of the annular casing 21a, the sealing plate 21c is arranged on the outer side of the annular casing 21a, and the two partition plates 214 inside the flange casing 21 and the fan-shaped inner plate 21b The inside of the flange casing 21 is divided into a fan-shaped air outlet chamber at the top and a semi-closed chamber at the bottom. A flange 14 is arranged on the outer wall of the casing 1 and is located at the periphery of the air outlet 12. The connecting flange 21aa provided on the annular casing 21a is detachably connected to the flange 14 of the casing 1 through fasteners. The sealing plate 21c is provided with a suction port 212, and the periphery of the suction port 212 is provided with a suction port. The flange side of the device fits the connection 21cc. It can be seen from this that the air outlet chamber of the flange casing 21 of the present invention is a fan-shaped air outlet chamber with a design slightly larger than 180°, and the fan-shaped inner plate 21b complementary to the fan-shaped air outlet chamber and the filter element reinforcement frame 24 are closely matched. A plurality of reinforcing ribs 242 distributed in a circle divide the air outlet chamber into several fan-shaped chambers, the air outlet is connected with the air outlet chamber to allow the main air passage to flow, and the lower part of the flange casing 21 does not allow the air passage to flow .

As shown in Figures 4 and 8, driven by the wind, the light material enters the casing from the feed port along the tangential direction of the material guide plate 15, and flows to the bottom discharge port under the action of the inertial force of the light material. The casing 1 has a volute structure as a whole, and an arc-shaped material guide plate 15 is provided in the blanking chamber near the feeding port 11 , and observation windows 16 are respectively provided on both sides of the casing 1 . The top of the casing 1 is provided with a plurality of lifting lugs to facilitate subsequent lifting.

The working process of the present invention is: the flow direction of the wind is: connect the air exhaust device with the air suction port 212 on the flange casing 21, and use the air suction device to discharge the blanking chamber inside the casing 1 from the air suction port 212. Negative pressure ventilation, because the position of the bottom discharge port 13 is equipped with a conveying air closing mechanism 6, the wind cannot flow through the discharge port 13, that is to say, the air enters from the feed port 11, and the light materials are filtered through the disc filter. The dust-laden gas flows out through the air outlet 12 of the casing 1, the air outlet chamber 211 and the air suction port 212 of the flange casing 21,

The flow of the light material is: the light material enters the inside of the casing 1 from the feed port 11 and along the tangential direction of the material guide plate 15 under the drive of the wind, and flows to the bottom discharge port 13 under the action of the inertial force of the light material. flow, and most of them directly enter the conveying air-closing cylinder 61, the driving motor 63 drives the air-closing impeller 62 to rotate, and is discharged under the drive of the air-closing impeller 62; Will adhere to the upper part of the disc filter 23, because the lower part of the flange casing 21 has no wind direction to flow out, that is, when the light material is transferred from the upper part of the disc filter 23 to the lower part, it changes from adsorption to There is no adsorption force, and there is a tendency to fall under the action of its own weight. Coupled with the effect of the reverse blowing mechanism at this position, the wind filtered by the air inlet filter frame 32 enters the air inlet of the fan 31, and then enters the blower through the air outlet. In the channel 215, it is finally blown to the disc filter 23 through the blowing port 216, so that the light matter adhering to the disc filter 23 is quickly detached, and enters the bottom conveying air closing mechanism 6 under the action of wind force and self-weight to be discharged. Outside the casing, winnowing of light substances is completed.

While sucking air, the filter screen cleaning mechanism 4 can clean the disc filter screen 23 in real time, the scraper 41 can scrape off the light substances adhering to the filter screen, and the rolling brush 42 can clean the screen holes to prevent clogging of the screen.

The advantages of the present invention are as follows: First, the disc filter is used to replace the drum filter element structure in the prior art, which not only simplifies the structure, saves parts such as the inner cylinder and the blowing chamber, but also avoids the inner shaft sleeve and outer periphery of the drum. And structures such as the hollow end formed by 8 rollers greatly simplifies the product structure, reduces the operating failure rate and manufacturing cost; second, the upper part of the flange casing of the present invention has an air outlet chamber, and the air outlet chamber and The air suction port provided on the flange shell is connected. Therefore, the upper part of the flange shell of the present invention is ventilated, and the lower part is not ventilated, so that there will be no uneven air flow, so that light materials will not gather. The filter function of the disc filter is fully and effectively used, and it is beneficial for the light matter adhering to the disc filter to change from adsorption to non-adsorption when it rotates to the lower part of the flange casing, and can be absorbed by itself. Under the action of gravity, it falls into the conveying air-closing mechanism and then discharges. Compared with the traditional drum filter structure, the disc filter structure of the present invention can avoid the entanglement of long strips of light materials and reduce the failure rate; third, the present invention The added filter screen cleaning mechanism of the invention can clean the disc filter screen in real time to prevent too much light matter adhering to the disc filter screen and affect the filtering effect.

Inspired by the above-mentioned ideal embodiment according to the present invention, through the above-mentioned description content, relevant workers can make various changes and modifications within the scope of not departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, but must be determined according to the scope of the claims.

Claims (10)

1. The utility model provides a light material air separator in building rubbish or dismantlement rubbish, includes casing (1), filtering mechanism (2) and transport and close wind mechanism (6), the top side of casing (1) has feed inlet (11), has air outlet (12) on the lateral wall and the bottom has discharge gate (13), the inner space of casing (1) is the blanking cavity, air outlet (12) department of casing (1) is equipped with filtering mechanism (2), the bottom of casing (1) just is located discharge gate (13) department and is equipped with transport and close wind mechanism (6), its characterized in that:

the filtering mechanism (2) comprises a flange casing (21), a speed reducing motor (22) and a disc type filter screen (23), the flange casing (21) is arranged at the air outlet (12), the flange casing (21) is detachably connected with the outer wall of the machine shell (1), the disc type filter screen (23) is arranged at the air outlet (12) of the machine shell (1), the disc type filter screen (23) is in running fit with the air outlet (12), the speed reducing motor (22) is arranged on the outer wall of the flange casing (21), and a power output shaft of the speed reducing motor (22) is in transmission connection with the disc type filter screen (23),

the upper portion in the flange cover shell (21) has air-out cavity (211), and air-out cavity (211) is linked together with inlet scoop (212) that is equipped with on flange cover shell (21).

2. The winnowing machine for light materials in construction waste or dismantling waste of claim 1, wherein: the center department of flange cover shell (21) is equipped with axle sleeve (213), be equipped with transmission shaft (221) on the power output shaft of gear motor (22), transmission shaft (221) are established in axle sleeve (213), and the free end of transmission shaft (221) is connected with disc filter screen (23) transmission simultaneously, air-out cavity (211) inside flange cover shell (21) is the fan-shaped air-out cavity of separating formation by division board (214), the both ends of division board (214) and the inner wall of flange cover shell (21) and the outer wall fixed connection of axle sleeve (213).

3. The winnowing machine for light materials in construction waste or dismantling waste of claim 1, wherein: the filter mechanism (2) further comprises a filter element reinforcing framework (24), the filter element reinforcing framework (24) comprises a reinforcing shaft sleeve (241) arranged at the center of the outer side of the disc type filter screen (23) and reinforcing ribs (242) which are uniformly arranged along the circumferential direction of the reinforcing shaft sleeve (241) and are fixed on the disc type filter screen (23), a power output shaft of the speed reducing motor (22) is provided with a transmission shaft (221), and the disc type filter screen (23) and the reinforcing shaft sleeve (241) are simultaneously connected with the free end of the transmission shaft (221) in a rotating mode.

4. The winnowing machine for light materials in construction waste or dismantling waste of claim 1, wherein: the wind power generation device is characterized by further comprising a reverse blowing mechanism (3), wherein the reverse blowing mechanism (3) comprises a fan (31), a blowing channel (215) which is separated from the air outlet cavity (211) is further arranged at the lower portion of the flange casing (21), a blowing port (216) communicated with the blowing channel (215) is formed in the flange casing (21), a reverse blowing inlet is formed in the outer wall of the flange casing (21), and an air outlet of the fan (31) is communicated with the blowing channel (215) through the reverse blowing inlet.

5. The winnowing machine for light materials in construction waste or dismantling waste of claim 4, wherein: the reverse blowing mechanism (3) further comprises an air inlet filter frame (32), and the air inlet filter frame (32) is arranged at an air inlet of the fan (31).

6. The winnowing machine for light materials in construction waste or dismantling waste of claim 1, wherein: still including establishing filter screen cleaning mechanism (4) in disc filter screen (23) lower part, filter screen cleaning mechanism (4) are including scraper blade (41), round brush (42) and round brush seat (43), the inboard at disc filter screen (23) is arranged along vertical direction in scraper blade (41), the both ends of round brush seat (43) respectively with the inner wall and the scraper blade (41) fixed connection of casing (1), round brush (42) rotate to be supported on round brush seat (43), and the both ends of round brush (42) rotate with the inner wall and the scraper blade (41) of casing (1) and be connected.

7. The winnowing machine for light materials in construction waste or dismantling waste of claim 1, wherein: the light material pre-filtering device is characterized by further comprising a light material pre-filtering mechanism (5) close to the disc type filter screen (23), wherein the light material pre-filtering mechanism (5) comprises a filter element support (51) and a primary filter element (52), the filter element support (51) is arranged in a blanking cavity of the machine shell (1), the primary filter element (52) is arranged on the filter element support (51), and the primary filter element (52) is located at the middle lower part of the blanking cavity and close to the discharge hole (13).

8. The winnowing machine for light materials in construction waste or dismantling waste of claim 1, wherein: carry and close wind mechanism (6) including carrying and close dryer (61), air seal impeller (62) and driving motor (63), carry and close dryer (61) and establish in the bottom of casing (1) and be located discharge gate (13) department, and carry the inner chamber and the blanking cavity of closing dryer (61) and be linked together, air seal impeller (62) are established and are passed through the axis of rotation and are connected rather than rotating in carrying and close dryer (61), driving motor (63) are established on the outer wall of carrying and close dryer (61), and the power output shaft and the transmission shaft transmission of driving motor (63) are connected.

9. The winnowing machine for light materials in construction waste or dismantling waste of claim 1, wherein: flange cover shell (21) includes annular housing (21 a), fan-shaped inner panel (21 b) and shrouding (21 c), establish the inboard lower part at annular housing (21 a) fan-shaped inner panel (21 b), the outside at annular housing (21 a) is established in shrouding (21 c), two inside division boards (214) of flange cover shell (21) and fan-shaped inner panel (21 b) become the air-out cavity that upper portion is fan-shaped with the inside partition of flange cover shell (21), the lower part is semi-closed cavity, the periphery that lies in air outlet (12) on the outer wall of casing (1) is equipped with flange (14), flange (21 aa) that annular housing (21 a) was equipped with can be dismantled through fastener and flange (14) of casing (1) and be connected, be equipped with inlet scoop (212) on shrouding (21 c), and the periphery of inlet scoop (212) is equipped with flange limit (21 cc) of being connected with the device cooperation that induced drafts.

10. The winnowing machine for light materials in construction waste or dismantling waste of claim 1, wherein: the whole machine shell (1) is of a volute structure, an arc-shaped material guide plate (15) is arranged in the blanking cavity and close to the feeding hole (11), and two sides of the machine shell (1) are respectively provided with an observation window (16).

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