CN113457980B - Highly efficient comprehensive air separation equipment with intelligent cleaning and sorting functions for objects with similar specific gravity - Google Patents

Abstract

The present application discloses a high-efficiency comprehensive air separation equipment with intelligent cleaning and sorting functions of objects with similar specific gravity, which relates to the field of garbage disposal. The equipment includes: first-stage to third-stage fan assemblies, first-stage and second-stage hub assemblies, bouncing belt sections, air separation light material discharging belt conveyors, air separation bins, settling chambers, and return air structures with automatic cleaning functions. The equipment realizes three-stage air separation of light materials and two-stage air separation of heavy materials through the first-stage to third-stage fan assemblies; the first-stage and second-stage hub assemblies are used to break up and thin the sorted materials step by step, thereby reducing the impurity rate of air separation heavy materials and improving the air separation quality; the bouncing belt sections are used to realize four-stage sorting of light materials, thereby realizing high-efficiency comprehensive air separation. The return air structure uses wind internal circulation to control dust and meet environmental protection requirements. The return air filter is automatically cleaned by the cleaning device to reduce the labor intensity of workers and avoid frequent shutdowns.

Description

Highly efficient comprehensive air separation equipment with intelligent cleaning and sorting functions for objects with similar specific gravity

Technical Field

The present application relates to garbage disposal equipment, and in particular to a highly efficient comprehensive air separation equipment with the functions of intelligent cleaning and sorting of objects with similar specific gravity.

Background Art

Most general large-scale air separation equipment is a first-stage air separation, which only performs a wind force specific gravity separation on the incoming materials, and obtains two types of materials: light and heavy materials. Therefore, the purity of the first-stage air separation products cannot be guaranteed. Based on this, some equipment manufacturers, in order to ensure the purity of the air separation products, often use another air separation equipment to further select the first-stage air separation products when the quality of the air separation products of the current air separation machine does not meet the requirements. However, the quality of the air separation products after air separation in this solution is still not ideal, and it increases the equipment investment and the area occupied by the production line, which is poor in economic efficiency.

In addition, domestic environmental protection is becoming increasingly stringent, and dust control on construction sites is becoming increasingly strict, so air separation equipment is required to have dust reduction measures.

Based on this, it is urgent to develop a comprehensive air separation equipment with high air separation quality, high air separation efficiency and dust control function.

Summary of the invention

The purpose of this application is to overcome the above problems or at least partially solve or alleviate the above problems.

The present application provides a highly efficient comprehensive wind separation device with intelligent cleaning and sorting functions for objects with similar specific gravity, including:

The first to third stage fan assemblies are configured to perform three-stage air separation for light objects and two-stage air separation for heavy objects. They are arranged from high to low in the same vertical plane. The corresponding air nozzles of the first to third stage fan assemblies are arranged from back to front. A material sliding plate is arranged between every two stages of air nozzles, and configured to make the heavy objects separated by air slide out along the material sliding plate.

The first and second stage hub assemblies are arranged in front of the air nozzle of the first stage fan assembly and the air nozzle of the second stage fan assembly respectively, and are configured to rotate the materials after air separation, and are also configured to break up and thin the separated materials step by step;

The belt conveyor for discharging light materials by air separation is divided into:

The bouncing belt segment is arranged within the drop range of the secondary hub assembly and is configured to perform a fourth level of sorting of light materials.

The conventional discharging section is configured to convey the light materials sorted out;

The wind selection chamber is configured as a closed structure and is located at least at the positions where the corresponding air nozzles of the first to third stage fan assemblies are located, and at the positions where the first and second stage hub assemblies are located;

A settling chamber, configured as a closed structure, is located at the location of the bouncing belt section and the conventional discharging section of the air separation light material discharging belt conveyor, and is connected to the air separation bin; and

The return air structure is arranged at the top of the settling chamber and is configured to return the air generated by the first to third stage fan assemblies to the first to third stage fan assemblies to use wind internal circulation to control dust. The return air structure has a return air outlet filter, and the return air structure is configured with a cleaning device to automatically clean the return air outlet filter.

Optionally, each of the first to third stage fan assemblies includes: a corresponding fan for generating wind force to air-select materials;

The air duct is connected to the air outlet of the corresponding fan and the corresponding air nozzle to convey the air flow.

Optionally, the air duct corresponding to each stage of the fan assembly is a rubber hose, and each stage of the fan assembly also includes a corresponding air nozzle angle adjustment mechanism, which is connected to the corresponding air duct and is configured to adjust the pitch angle of the corresponding air nozzle by adjusting the pitch of the air duct.

Optionally, each of the first and second stage hub assemblies comprises: a corresponding

A driving reduction motor for providing power; and

The rotating hub is connected to the driving reduction motor, and a plurality of material-moving rods are vertically arranged in the circumferential direction of the rotating hub, which are used to break up and thin the materials falling on the rotating hub.

Optionally, one end of the bouncing belt segment is hinged to the conventional discharging segment, and the other end is connected to a bouncing belt segment angle adjustment mechanism to achieve angle adjustment of the bouncing belt segment.

Optionally, the return air structure includes:

There are multiple return air outlets, all opened at the top of the settling chamber, and a return air outlet filter is arranged at each return air outlet;

There are at least three return air ducts, one end of each of which is connected to a plurality of return air ports, and the other end of each of which is connected to the air inlet of the corresponding first to third stage fan assemblies.

Optionally, each return air filter corresponds to a cleaning device, and each cleaning device includes:

A motor for providing power;

A boom connecting seat, fixedly connected to the motor;

A suspension rod is installed at the suspension rod connection seat and passes through the corresponding return air filter and is configured to rotate with the motor;

A cleaning member fixing seat fixedly connected to the end of the suspension rod; and

The cleaning piece is installed on the cleaning piece fixing seat and is configured to rotate with the suspension rod to automatically clean the return air outlet filter.

Optionally, the high-efficiency comprehensive air separation equipment also includes a feeding belt conveyor configured to convey materials. The feeding belt conveyor is arranged on two parallel walking tracks above the first-stage fan assembly. Four walking rollers are installed under the feeding belt conveyor. The feeding belt conveyor moves along the two parallel walking tracks through the four walking rollers, thereby realizing the front and rear position adjustment of the feeding belt conveyor.

Optionally, the high-efficiency comprehensive air separation equipment also includes four sets of height adjustment devices, which are symmetrically arranged below the two parallel walking tracks and are configured to achieve adjustment of the height position and inclination angle of the feeding belt conveyor.

Optionally, each set of height adjustment devices adopts an articulated screw adjustment structure.

The high-efficiency comprehensive air separation equipment with intelligent cleaning and sorting functions of objects with similar specific gravity of the present application realizes three-stage air separation for light objects and two-stage air separation for heavy objects through the first to third stage fan components; the first and second stage hub components are used to break up and thin the sorted materials step by step, thereby reducing the impurity rate of heavy objects in air separation and improving the quality of air separation; the bouncing belt section is used to realize four-stage sorting of light objects, thereby realizing the processing of objects with similar specific gravity and realizing high-efficiency comprehensive air separation. The return air structure uses wind internal circulation to control dust and meet environmental protection requirements. The return air filter is automatically cleaned by the cleaning device to reduce the labor intensity of workers and avoid frequent shutdowns.

Based on the detailed description of the specific embodiments of the present application in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other objects, advantages and features of the present application.

BRIEF DESCRIPTION OF THE DRAWINGS

Hereinafter, some specific embodiments of the present application will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

FIG1 is a schematic front view of a high-efficiency comprehensive air separation device with intelligent cleaning and sorting functions of objects with similar specific gravity according to one embodiment of the present application;

FIG2 is a schematic side view of the high-efficiency comprehensive air separation device shown in FIG1 ;

FIG3 is a schematic top view of the efficient comprehensive air separation device shown in FIG1 ;

Fig. 4 is a schematic cross-sectional view taken along the cutting line A-A in Fig. 1;

FIG5 is a schematic cross-sectional view of the cleaning device shown in FIG4 ;

FIG. 6 is a schematic structural diagram along the F direction in FIG. 5 .

The symbols in the figure mean the following:

1. Combined bracket, 2. Feeding belt conveyor, 3. Walking roller, 4 Walking track, 5. Height adjustment device, 6. Locking device, 7. Air separation bin, 8. Air separation bin bracket, 9. First-stage rotating hub assembly, 10. Second-stage rotating hub assembly, 11. First-stage fan assembly, 12. First-stage fan nozzle adjustment mechanism, 13. First-stage fan nozzle, 14. Second-stage fan assembly, 15. Second-stage fan nozzle, 16. Second-stage fan nozzle adjustment mechanism, 17. Third-stage fan assembly, 18. Protective shell, 19. Third-stage fan nozzle, 20. Third-stage fan nozzle adjustment mechanism, 21. First-stage air separation heavy object sliding plate, 22. Second 1. First-level air-selected heavy object chute, 23. Air-selected heavy object discharging belt conveyor, 24. Sedimentation chamber, 25. Air-selected light object discharging belt conveyor, 26. Air-selected light object discharging belt conveyor frame, 27. Conventional discharging section, 28. Bouncing belt section, 29. Bouncing belt section angle adjustment mechanism, 30. Soft curtain, 31. Return air duct, 32. Return air outlet cover, 33. Return air outlet filter, 34. Cleaning device, 35 motor, 36 suspension rod connecting seat, 37 suspension rod, 38 cleaning part fixing seat, 39 cleaning part, 40 pressure strip, 41 pressure strip fixing bolt pair, 42 tightening spring, 43 gasket, 44 bottom locking nut, 45 upper cover.

DETAILED DESCRIPTION

In the process of realizing this application, the inventors found that: even if some large-scale air separation equipment integrates two-stage, three-stage or even multi-stage air separation, it is only for repeated multi-stage purification and sorting of a single material in the two types of products of the first-stage air separation, so the purity of another first-stage air separation product that has not been repeatedly air-separated or repeatedly sorted cannot be guaranteed. For example, for the light and heavy materials selected by the first-stage air separation, multi-stage air separation is to perform multi-stage purification and sorting of the light materials, and the purity of the heavy materials selected separately cannot be guaranteed.

In addition, the inventors also found that: in other prior art two-stage hub air separation, the two-stage hubs are arranged front and back, and the second-stage hub cannot bear the medium and heavy objects conveyed by the first-stage hub. In the air separation process, an additional material is generally selected - objects with similar specific gravity. Objects with similar specific gravity in garbage are mostly water-absorbing textiles or agglomerated materials with mud and sand or heavy lightweight objects. The final disposal is generally incinerated together with lightweight objects, which not only increases the discharge belt conveyor but also increases the equipment floor space and transportation costs. In addition, the surface of the hub of the two-stage hub air separation in the prior art is smooth, and the flexible objects are transferred over only by the pressure of the wind force of the fan and the friction between the hub and the flexible object. When encountering the situation of flexible objects agglomerating and lightweight objects carrying mud and sand or heavy objects, this part of the material usually cannot pass the hub only by the action of wind force and the friction of the hub surface, but falls into the air separation heavy object area, which often causes the air separation heavy object to contain too high impurities and fail to meet the requirements.

In addition, the inventor also found that: at present, domestic environmental protection is becoming increasingly strict, and the control of dust on construction sites is becoming more and more stringent, so most wind selections have gradually begun to take dust reduction measures or use dust removal equipment, but the cost of using dust removal equipment is relatively high, so it is urgent to find a dust control method that can meet the dust control requirements of most usage scenarios and is relatively economical. Based on this, the inventor developed this application.

Fig. 1 is a schematic front view of an efficient comprehensive air separation device with intelligent cleaning and sorting functions of objects with similar specific gravity according to an embodiment of the present application. Fig. 2 is a schematic side view of the efficient comprehensive air separation device shown in Fig. 1. Fig. 3 is a schematic top view of the efficient comprehensive air separation device shown in Fig. 1. Fig. 4 is a schematic cross-sectional view taken along the cutting line A-A in Fig. 1. Fig. 5 is a schematic cross-sectional view of the cleaning device shown in Fig. 4. Fig. 6 is a schematic structural diagram along the F direction in Fig. 5.

As shown in FIG. 1 , and also referring to FIG. 2 to FIG. 6 , this embodiment provides a high-efficiency comprehensive air separation device with the function of intelligent cleaning and sorting objects with similar specific gravity, including: a first-stage fan assembly 11, a second-stage fan assembly 14, a third-stage fan assembly 17, a first-stage hub assembly 9, a second-stage hub assembly 10, an air separation light material discharge belt conveyor 25, an air separation bin 7, a settling chamber 24, and a return air structure. Among them, the first-stage fan assembly 11, the second-stage fan assembly 14, and the third-stage fan assembly 17 are configured to perform three-stage air separation on light objects and two-stage air separation on heavy objects. The first-stage fan assembly 11, the second-stage fan assembly 14, and the third-stage fan assembly 17 are arranged from high to low in the same vertical plane, and the corresponding air nozzles of the first-stage fan assembly 11, the second-stage fan assembly 14, and the third-stage fan assembly 17 are arranged from back to front. That is, the first-stage fan nozzle 14, the second-stage fan nozzle 15, and the third-stage fan nozzle 19 are arranged from back to front. A material sliding plate is arranged between each two-stage air nozzle, and is configured to make the heavy objects selected by air flow out along the material sliding plate. A first-stage air-selected heavy object sliding plate 21 is arranged between the first-stage air nozzle 14 of the first-stage air fan assembly 11 and the second-stage air nozzle 15 of the second-stage air fan assembly 14, and a second-stage air-selected heavy object sliding plate 22 is arranged between the second-stage air nozzle 15 of the second-stage air fan assembly 14 and the third-stage air nozzle 19 of the third-stage air fan assembly 17. The first-stage rotating hub assembly 9 and the second-stage rotating hub assembly 10 are arranged in front of the air nozzles of the first-stage air fan assembly 11 and the second-stage air fan assembly 14, respectively, and are configured to convey the materials selected by air, and are also configured to break up and thin the selected materials step by step. The air-selected light object discharging belt conveyor 25 includes a bouncing belt section 28 and a conventional discharging section 27. The bouncing belt section 28 is arranged in the dropping range of the second-stage rotating hub assembly 10, and is configured to perform the fourth-stage sorting of light objects. The conventional discharge section 27 is connected to the bouncing belt section 28 and is configured to convey the selected light objects. The air selection bin 7 is configured as a closed structure, at least located at the position where the first-stage fan nozzle 13, the second-stage fan nozzle 15 and the third-stage fan nozzle 19 are located, and the position where the first-stage hub assembly 9 and the second-stage hub assembly 10 are located. The settling chamber 24 is configured as a closed structure, located at the position where the bouncing belt section 28 and the conventional discharge section 27 are located in the air selection light object discharge belt conveyor 25, and is connected to the air selection bin 7. As shown in FIG. 3 , the return air structure is arranged at the top of the settling chamber 24, and is configured to return the wind generated by the first-stage fan assembly 11, the second-stage fan assembly 14 and the third-stage fan assembly 17 to the first-stage fan assembly 11, the second-stage fan assembly 14 and the third-stage fan assembly 17, so as to use the wind internal circulation to improve the wind energy utilization efficiency, and at the same time, dust control can be performed. As shown in FIG. 4 , the return air structure has a return air filter 33. The inventors have found that when using wind internal circulation, the return air filter 33 is often easily clogged by light objects, resulting in a sharp decline in the wind selection effect, excessive fan pressure, and even overheating and tripping, so workers are required to regularly stop the machine to clean the return air filter 33. Once encountering relatively dry materials with a high content of light debris, the return air filter 33 will be clogged quickly, and frequent shutdowns are required for cleaning, which not only increases the labor intensity of workers, but also greatly reduces production continuity and production efficiency. In order to solve the above problems, as shown in Figure 5, and also see Figure 6, the return air structure is equipped with a cleaning device 34 to automatically clean the return air filter 33.

In this embodiment, the direction in which the first-stage fan assembly 11 discharges air is defined as the front, and the opposite direction of the air discharge direction is defined as the rear.

As shown in FIG1 , during specific implementation, the high-efficiency comprehensive air separation equipment further includes a combined bracket 1, an air separation bin bracket 8, an air separation heavy object discharge belt conveyor 23, and an air separation light object discharge belt conveyor frame 26. The combined bracket 1 is used to install the feeding belt conveyor 2, the first-stage fan assembly 11, the second-stage fan assembly 14, and the third-stage fan assembly 17. The air separation bin bracket 8 is used to support the air separation bin 7, and is also used to install the first-stage hub assembly 9 and the second-stage hub assembly 10. The air separation heavy object discharge belt conveyor 23 corresponds to the lower position of the first-stage hub assembly 9 and the second-stage hub assembly 10. The air separation light object discharge belt conveyor frame 26 is located at the front end of the second-stage hub assembly 10, and is used to support the air separation light object discharge belt conveyor 25.

As shown in FIG1 , in this embodiment, the high-efficiency comprehensive air separation equipment further includes a feeding belt conveyor 2 configured to convey materials. The feeding belt conveyor 2 is arranged on two parallel running tracks 4 above the first-stage fan assembly 11. In this example, the two parallel running tracks 4 are fixed on the combined bracket 1. Four running rollers 3 are installed below the feeding belt conveyor 2, so that the feeding belt conveyor 2 moves along the two parallel running tracks 4 through the four running rollers 3, thereby realizing the front and rear position adjustment of the feeding belt conveyor 2.

Furthermore, as shown in FIG1 , in this embodiment, the high-efficiency comprehensive air separation equipment also includes four sets of height adjustment devices 5. The four sets of height adjustment devices 5 are symmetrically arranged below the two parallel running tracks 4, and are configured to achieve the adjustment of the height position and inclination angle of the feeding belt 2. By adjusting the four sets of height adjustment devices 5 at the same time to raise or lower them to the same position, the height position adjustment of the feeding belt 2 can be achieved. By adjusting the two sets of height adjustment devices 5 at one side of the two parallel running tracks 4 at the same time, and keeping the two sets of height adjustment devices 5 at the other side unchanged, the pitch angle adjustment of the feeding belt 2 can be achieved. Thereby, the material of the feeding belt 2 accurately falls on the second quadrant of the first-stage hub in the first-stage hub assembly 9.

Further, as shown in FIG1 , in this embodiment, each set of height adjustment devices 5 adopts an articulated screw adjustment structure. Each set of height adjustment devices 5 includes a hinge installed below the corresponding walking track 4, a nut fixedly connected to the hinge, and a screw engaged with the nut, and the screw is fixed to the combined bracket 1. The height position and inclination angle of the feeding belt conveyor 2 are adjusted by the engagement of the nut with the screw.

Further, as shown in FIG1 , in this embodiment, there are symmetrically arranged position locking devices 6 on the front and rear sides of the feeding belt 2, which are configured to lock the feeding belt 2 at the optimal feeding position after adjustment. In specific implementation, the position locking device 6 is a locking screw.

Further, as shown in FIG1 , in the present embodiment, each of the first-stage fan assembly 11, the second-stage fan assembly 14, and the third-stage fan assembly 17 includes: a corresponding fan and an air duct. The fan is used to generate wind force to air-select the material. The air duct is connected to the air outlet of the corresponding fan and the corresponding air nozzle for conveying the airflow. The first-stage fan assembly 11 includes a first-stage fan, a first-stage fan air duct, and a first-stage fan air nozzle 13. The second-stage fan assembly 14 includes a second-stage fan, a second-stage fan air duct, and a second-stage fan air nozzle 15. The third-stage fan assembly 17 includes a third-stage fan, a third-stage fan air duct, and a third-stage fan air nozzle 19.

Furthermore, as shown in FIG1 , in this embodiment, the air duct corresponding to each level of the fan assembly is a rubber hose. Each level of the fan assembly also includes a corresponding air nozzle angle adjustment mechanism, that is, the first level fan assembly 11 also includes a first level fan air nozzle adjustment mechanism 12, the second level fan assembly 14 also includes a second level fan air nozzle adjustment mechanism 16, and the third level fan assembly 17 also includes a third level fan air nozzle adjustment mechanism 20. The corresponding air nozzle angle adjustment mechanism is connected to the corresponding air duct, and is configured to adjust the pitch angle of the corresponding air nozzle by adjusting the pitch of the air duct. The air nozzle angle adjustment mechanism of each level is a bolt rod group, and the angle adjustment of the corresponding fan air nozzle is achieved by adjusting the bolt rod group, and the best air outlet angle is achieved by adjustment, thereby achieving an ideal air selection effect.

Furthermore, as shown in FIG. 1 , in this embodiment, a protective shell 18 is provided in the area of the third-stage fan duct that is scoured by the secondary air separation heavy objects.

Furthermore, as shown in Figure 1, in this embodiment, the first-level air separation heavy object sliding plate 21 is an arc-shaped plate, and a reasonable elevation angle is set at the discharge end of the first-level air separation heavy object sliding plate 21 to ensure that the first-level air separation heavy objects can fall on the second quadrant cylindrical surface of the secondary hub in the secondary hub assembly 10 after being accelerated and thrown out by the first-level air separation heavy object sliding plate 21.

Further, as shown in FIG1 , in this embodiment, each level of the first-level hub assembly 9 and the second-level hub assembly 10 includes: a corresponding driving reduction motor and a hub. That is, the first-level hub assembly 9 includes a first-level hub driving reduction motor and a first-level hub. The second-level hub assembly 10 includes a second-level hub driving reduction motor and a second-level hub. The first-level hub driving reduction motor and the second-level driving reduction motor are used to provide power, and can realize forward rotation and conveying along the incoming material. The first-level hub is connected to the first-level driving reduction motor, and the second-level hub is connected to the second-level driving reduction motor. A plurality of material-moving rods are arranged on the circumferential direction perpendicular to the roller surface corresponding to the first-level hub and the second-level hub, which are used to break up and thin the material falling on the hub.

Furthermore, as shown in Figure 1, in this embodiment, the primary hub and the secondary hub are arranged in an upper and lower staggered manner. Furthermore, a configuration is adopted in which the roller surface linear speed of the secondary hub is higher than that of the primary hub.

Furthermore, as shown in FIG. 1 , in this embodiment, the primary hub assembly 9 and the secondary hub assembly 10 are respectively provided with adjusting screws, which can realize the adjustment of the front and rear positions of the corresponding hubs, so that the corresponding hubs can achieve better step-by-step breaking and sorting effects.

Further, as shown in Figure 1, in this embodiment, one end of the bouncing belt segment 28 is hinged to the conventional discharging segment 27. The other end of the bouncing belt segment 28 is connected to the bouncing belt segment angle adjustment mechanism 29 to achieve the angle adjustment of the bouncing belt segment 28.

In specific implementation, the bouncing belt segment angle adjustment mechanism 29 is an electric push rod, the end of which is fixedly connected to the end of the other end of the bouncing belt segment 28. By extending or contracting the electric push rod, in conjunction with the hinge structure at one end of the bouncing belt segment 28, the angle of the bouncing belt segment 28 can be adjusted to achieve an ideal sorting effect. In other embodiments, the bouncing belt segment angle adjustment mechanism 29 can also be a manual adjustment rod.

Furthermore, the angle between the bouncing belt section 28 and the horizontal plane is adjustable between 25 degrees and 40 degrees.

Further, as shown in Fig. 1, in this embodiment, the bouncing belt section is sealed with the settling chamber 24 by a soft curtain 30 due to the angle adjustment relationship. The soft curtain 30 allows the bouncing belt section 28 to still form a closed box with the settling chamber 24 after adjusting the angle, thereby preventing air leakage or light objects from escaping.

As shown in FIG1 , in this embodiment, the bouncing belt section 28 can be regarded as a part of the air-selected light-weight material discharging belt conveyor 25. The air-selected light-weight material discharging belt conveyor 25 is divided into a hinged front section and a rear section. The front section is the feeding section, which is the bouncing belt section 28 with an independently adjustable inclination angle. The rear section is the conventional discharging section 27 of the air-selected light-weight material discharging belt conveyor, which is shared throughout the entire length.

More specifically, as shown in Fig. 1, in this embodiment, the settling chamber 24 is integrally located on the air separation light material discharging belt conveyor frame 26. The settling chamber 24 is designed with matching cross-sectional area and external dimensions according to parameters such as total air intake, cross-sectional area of air intake channel, and wind speed required for light material settling.

As shown in FIG3, in this embodiment, further, the return air structure includes: a return air port and a return air duct 31. There are multiple return air ports, all opened at the top of the settling chamber 24. A return air port filter 33 is provided at each return air port. As shown in FIG2, there are at least three return air ducts 31. As shown in FIG3, one end of the three return air ducts 31 is connected to the multiple return air ports. As shown in FIG2, the other end of the three return air ducts 31 is connected to the air inlet of the corresponding first-stage fan assembly 11, the second-stage fan assembly 14 and the third-stage fan assembly 17.

As shown in FIG5 , in this embodiment, further, each return air outlet is provided with a return air outlet cover 32, and a top cover 45 is provided on the top of the return air outlet cover 32. Each return air outlet cover 32 is connected to the return air duct 31 through a pipeline. In order to prevent the return air outlet filter 33 from being blocked by light objects, thereby affecting the sedimentation effect and damaging the fan, a cleaning device 34 is separately provided for each return air outlet filter 33. That is, each return air outlet filter 33 corresponds to a cleaning device 34.

In this embodiment, as shown in FIG5 , each cleaning device 34 includes: a motor 35, a suspension rod connection seat 36, a suspension rod 37, a cleaning piece fixing seat 38 and a cleaning piece 39. The motor 35 is used to provide power and is installed at the upper cover 45. The suspension rod connection seat 36 is fixedly connected to the motor 35. The suspension rod 37 is installed at the suspension rod connection seat 36, and passes through the return air outlet outer cover 32 and passes through the corresponding return air outlet filter 33, and is configured to rotate with the motor 35. The cleaning piece fixing seat 38 is fixedly connected to the end of the suspension rod 37. The cleaning piece 39 is installed on the cleaning piece fixing seat 38, and is configured to rotate with the suspension rod 37 to automatically clean the return air outlet filter 33. More specifically, the cleaning piece 39 is a scraper or brush assembly arranged in a cross or a straight line. That is, each cleaning device 34 in this embodiment is similar to a rotary cleaner of a ceiling fan structure, which drives the suspension rod 37 and the scraper or brush assembly fixed at the end thereof in a cross or straight line arrangement to rotate through a low-speed variable frequency motor to achieve cleaning.

Furthermore, as shown in FIG5 , since the cleaning member 39 is a consumable part, in order to facilitate replacement, in this embodiment, the fixing structure of the cleaning member 39 in each cleaning device 34 is designed to be a detachable structure, which may include a fixed back plate, a pressure strip 40, and a pressure strip fixing bolt pair 41. The fixed back plate adopts two vertical plates with outer circumference symmetry, which are welded to the inner flat sleeve located in the center. The cleaning member 39 is fixedly installed at the fixed back plate through the pressure strip 40 and the pressure strip fixing bolt pair 41.

Furthermore, as shown in Fig. 5, each cleaning device 34 further includes: a tension spring 42, a gasket 43 and a bottom locking nut 44 installed at the end of the suspension rod 37. By adjusting the position of the locking nut relative to the suspension rod 37 to tighten and compress the tension spring 42, the tension spring 42 drives the cleaning member 39 to always fit closely with the air outlet filter 33 through the pre-tightening force, so that the cleaning member 39 can still contact with the air outlet filter in the case of wear and tear, thereby achieving effective cleaning.

As shown in Figure 1, the working principle of this application is:

The feeding belt conveyor 2 throws the material into the air separation bin 7. The first-stage fan assembly 11 applies wind force to the thrown incoming materials through the air duct and the first-stage fan nozzle 13 located below the discharge end of the feeding belt conveyor 2. The lighter materials in the incoming materials are blown into the deep of the air separation bin 7 or even directly into the sedimentation chamber 24. However, heavy objects, agglomerates, heavier textiles with higher moisture content, or light objects wrapped with heavy objects cannot be blown far due to the limited wind force. Most of the heavy objects in this part fall on the outer cylindrical surface of the second quadrant area of the first-stage hub, and a small number of overweight objects fall closer and fall directly on the first-stage air separation heavy object chute 21 below together with the rest of the heavy objects. There are evenly distributed material-push rods with vertical roller surfaces on the outer cylindrical surface of the first-stage hub. When medium and heavy objects fall onto the roller surface, they will rebound and disperse, which can disperse agglomerated materials and light objects wrapped in heavy objects, so that heavy objects such as aggregates entrained in them can roll out. Due to the intercepting effect of the material-push rods on the outer cylindrical surface of the first-stage hub, flexible objects such as textiles will be hung on the material-push rods and transported forward and fall, while hard heavy objects such as aggregates will slide from the gap between the material-push rods to the first-stage air separation heavy object sliding plate 21 below due to their small friction coefficient with the roller surface and good fluidity, thereby completing the first-stage air separation of the incoming materials.

Due to the mutual entrainment of materials, the heavy objects obtained by the first-level air separation, although the medium and heavy objects such as agglomerates in the incoming materials have been dispersed by the first-level hub, there may still be some light objects and flexible medium and heavy objects entrained in the materials that have not been fully dispersed. In this regard, the present application uses a first-level air separation heavy object sliding plate 21 to accelerate and slide this part of the first-level air separation heavy objects under the action of gravity after falling, so that they are thrown to the second quadrant area on the outer cylindrical surface of the second-level hub with a material removal rod in the lower front, and are thrown again to be dispersed and intercepted by flexible objects. A second-level air separation nozzle is set below the end of the first-level air separation heavy object sliding plate 21, so that the first-level air separation heavy objects experience the blowing action of the second-level fan during the process of being thrown up and collided with the second-level hub and scattered, thereby realizing the second-level air separation of heavy objects. The flexible materials brought by the material-moving rod of the first-level rotating hub may also contain heavy objects such as aggregates. The material-dropping area in front and below is connected by the second-level rotating hub, which can realize the second-level breaking and flexible object interception of the materials brought by it. At the same time, this part of the material together with the light objects blown in by the first-level air separation and the small heavy objects mixed in will pass through the wind action area of the second-level fan when falling through the channel area formed between the first-level rotating hub and the second-level rotating hub, thus realizing the second-level air separation of the light objects of the first-level air separation.

Similarly, when the materials brought forward by the material-push rod of the secondary rotating hub fall on the bouncing belt section at the feeding end of the air-selection light-weight material discharging belt conveyor below, the materials are subjected to the wind force blown out by the third-level fan nozzle 19 arranged below the secondary rotating hub, thus achieving the third-level air selection of these materials. At the same time, when the light-weight materials and small heavy objects mixed in the first two levels of air selection fall through the wind force action area of the third-level fan nozzle 19, the bouncing belt section can separate the aggregate and the flexible materials, thus achieving the third-level air selection of the light-weight materials and the fourth-level sorting of the bouncing belt section 28. The principle of sorting by the bouncing belt segment 28 is to effectively separate heavy objects such as aggregates and light and soft objects by utilizing the difference in friction coefficient or adhesion between the conveyor belt surface of the large-angle bouncing belt segment 28 and the aggregates. By adjusting the appropriate inclination of the bouncing belt segment 28, the aggregates will roll down to the rear of the feeding end of the bouncing belt segment 28 due to the small adhesion between the aggregates and the belt surface, while the light and soft objects can adhere to the surface of the bouncing belt segment and be transported to the discharging end along with the belt.

The settling chamber 24 is designed with a matching cross-sectional area and external dimensions according to parameters such as the total air intake volume, the cross-sectional area of the air intake channel, and the wind speed required for the lightweight object settling. If necessary, the return air duct is used to achieve effective settling of the lightweight object.

Finally, after the comprehensive action of the air separation equipment, the incoming materials can achieve two-stage air separation and purification of heavy materials such as aggregates, and three-stage air separation and purification of soft materials such as light materials by the bouncing belt section 28. The heavy materials of the second-stage air separation and the heavy materials such as small aggregates selected by the bouncing belt section 28 are combined into the air separation heavy material discharge belt conveyor 23, which is sent to one side of the air separation machine for storage. The selected soft materials such as light materials are taken over by the air separation light material discharge belt conveyor 25 and transported to the outer side of the end of the air separation machine for storage.

It can be seen that the present application has the functions of intelligent cleaning and sorting of objects with similar specific gravity. In the same device, it can not only realize the first-level air separation of incoming materials, but also realize the second-level air separation of heavy objects sorted out by the first-level air separation, and at the same time, it can realize the second-level and third-level air separation of light objects sorted out by the first-level air separation, plus a bouncing belt section 28 sorting for a total of four levels of sorting, which greatly improves the purity of each sorting final product, and the equipment occupies a small area, and the economy is greatly improved. In addition, the present application adopts a two-stage rotating hub with evenly distributed material-push rods on the outer cylindrical surface, which is arranged in an upper and lower staggered manner, and the second-stage rotating hub has a higher linear speed than the first-stage rotating hub roller surface, and cooperates with the first-stage air separation aggregate chute to achieve step-by-step or multi-stage breaking up and thinning of incoming materials, especially agglomerates, textiles with high moisture content and heavy weight, lightweight objects wrapped with aggregates or mud, and other medium and heavy objects that are difficult to blow away by wind, so that the materials can be fully scattered for air separation, and at the same time, the medium and heavy objects such as textiles can be intercepted and transported, further improving the purity of the air separation final product, especially the air separation heavy objects. In addition, the present application is equipped with an electric rotary sweeper with a ceiling fan structure for each return air filter 33, which can be set to normal operation or set to scheduled cleaning, and can automatically remove lightweight objects that block the holes on the filter net to keep the return air unobstructed, which saves labor for cleaning the net and avoids downtime and production errors caused by filter blockage, thereby improving economic benefits.

It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which this application belongs.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (7)

1. An efficient comprehensive air separation device with intelligent cleaning and sorting functions of objects with similar specific gravity, characterized by comprising: The first-stage fan assembly, the second-stage fan assembly and the third-stage fan assembly are configured to perform three-stage air separation on light objects and two-stage air separation on heavy objects. They are arranged from high to low in the same vertical plane. The corresponding air nozzles of the first-stage fan assembly, the second-stage fan assembly and the third-stage fan assembly are arranged from back to front. A material sliding plate is arranged between each two-stage air nozzle, and is configured to make the heavy objects separated by air slide out along the material sliding plate. The first and second stage hub assemblies are arranged in front of the air nozzle of the first stage fan assembly and the air nozzle of the second stage fan assembly respectively, and are configured to rotate the materials after air separation, and are also configured to break up and thin the separated materials step by step; The belt conveyor for discharging light materials by air separation is divided into: The bouncing belt segment is arranged within the drop range of the secondary hub assembly and is configured to perform a fourth level of sorting of light materials. The conventional discharging section is configured to convey the light materials sorted out; The wind selection chamber is configured as a closed structure and is located at least at the positions where the corresponding air nozzles of the first-stage fan assembly, the second-stage fan assembly and the third-stage fan assembly are located, and at the positions where the first-stage and second-stage hub assemblies are located; A settling chamber, configured as a closed structure, is located at the location of the bouncing belt section and the conventional discharging section of the air separation light material discharging belt conveyor, and is connected to the air separation bin; and A return air structure is arranged at the top of the settling chamber and is configured to return the air generated by the first-stage fan assembly, the second-stage fan assembly and the third-stage fan assembly to the first-stage fan assembly, the second-stage fan assembly and the third-stage fan assembly, so as to use wind internal circulation to control dust, and the return air structure has a return air inlet filter, and the return air structure is equipped with a cleaning device to automatically clean the return air inlet filter; Wherein, each of the first-stage fan assembly, the second-stage fan assembly and the third-stage fan assembly comprises: a corresponding The fan is used to generate wind power to select the materials; The air duct is connected to the air outlet of the corresponding fan and the corresponding air nozzle to convey the air flow; The return air structure comprises: There are multiple return air outlets, all opened at the top of the settling chamber, and a return air outlet filter is arranged at each return air outlet; There are at least three return air ducts, one end of each of the three return air ducts is connected to a plurality of return air ports, and the other end is connected to the air inlets of the fans of the corresponding first-stage fan assembly, the second-stage fan assembly, and the third-stage fan assembly; Each stage of the first and second stage hub assemblies comprises: A driving reduction motor for providing power; and A rotating hub is connected to the driving reduction motor, and a plurality of material-moving rods are arranged vertically in the circumferential direction of the rotating hub, which are used to break up and thin the materials falling on the rotating hub; The rotating hubs of the first rotating hub assembly and the second rotating hub assembly are arranged alternately up and down, and the rotating hub of the second rotating hub assembly has a higher roller surface linear speed than the rotating hub of the first rotating hub assembly; The bouncing belt section is sealed with the settling chamber by a soft curtain due to the angle adjustment relationship. 2. According to claim 1, the high-efficiency comprehensive air sorting equipment with the function of intelligent cleaning and sorting objects with similar specific gravity is characterized in that the air duct corresponding to each stage of the fan assembly is a rubber hose, and each stage of the fan assembly also includes a corresponding air nozzle angle adjustment mechanism, which is connected to the corresponding air duct and is configured to adjust the pitch angle of the corresponding air nozzle by adjusting the pitch of the air duct. 3. According to claim 1, the high-efficiency comprehensive air separation equipment with the functions of intelligent cleaning and sorting objects with similar specific gravity is characterized in that one end of the bouncing belt segment is hinged to the conventional discharge segment, and the other end is connected to the bouncing belt segment angle adjustment mechanism to realize the angle adjustment of the bouncing belt segment. 4. The high-efficiency comprehensive air separation device with intelligent cleaning and sorting functions of objects with similar specific gravity according to claim 1 is characterized in that each return air filter corresponds to a cleaning device, and each cleaning device includes: Motor, used to provide power; A boom connecting seat, fixedly connected to the motor; A suspension rod is installed at the suspension rod connection seat and passes through the corresponding return air filter and is configured to rotate with the motor; A cleaning member fixing seat fixedly connected to the end of the suspension rod; and The cleaning piece is installed on the cleaning piece fixing seat and is configured to rotate with the suspension rod to automatically clean the return air outlet filter. 5. According to claim 1, the high-efficiency comprehensive air separation equipment with the functions of intelligent cleaning and sorting objects with similar specific gravity is characterized in that it also includes a feeding belt conveyor configured to convey materials, and the feeding belt conveyor is arranged on two parallel walking tracks above the first-stage fan assembly, and four walking rollers are installed under the feeding belt conveyor. The feeding belt conveyor moves along the two parallel walking tracks through the four walking rollers, so that the front and rear position of the feeding belt conveyor can be adjusted. 6. According to claim 5, the high-efficiency comprehensive air separation equipment with the functions of intelligent cleaning and sorting objects with similar specific gravity is characterized in that it also includes four sets of height adjustment devices, which are symmetrically arranged below the two parallel walking tracks and are configured to realize the adjustment of the height position and inclination angle of the feeding belt conveyor. 7. The high-efficiency comprehensive air separation equipment with the functions of intelligent cleaning and sorting objects with similar specific gravity according to claim 6 is characterized in that each set of height adjustment devices adopts an articulated screw adjustment structure.