Recycled aggregate screening and dust removal device and method

Abstract

The present invention relates to the technical field of recycled aggregate screening, and specifically to a recycled aggregate screening and dust removal device and method. The present invention adds a dust removal device on the basis of the screening device, and removes dust in a closed environment to avoid pollution to the environment. Through the screening device, the circulation device, the collection chamber and the dust removal device, the circulation screening, secondary screening, aggregate classification and dust removal can be achieved by one-key start, which greatly reduces the labor cost and time cost. The structure is ingenious. When the aggregate enters the screening device, the centrifugal action causes the recycled aggregate to undergo centrifugal movement. During the movement, the corresponding size of the aggregate will enter the corresponding collection chamber through the discharge port. This circulation device can perform multiple circulation screening on the same batch of aggregates to ensure the accuracy of aggregate screening; in addition, the present invention divides aggregate screening, aggregate collection and dust removal into three parts, which are clear at a glance, simple and beautiful.

Description

Technical Field

[0001] The invention relates to the technical field of recycled aggregate screening, and in particular to a recycled aggregate screening and dust removal device and method. Background Art

[0002] Sustainable development is currently a national policy, so we need to vigorously promote national policies in all aspects of life. Among them, the reuse of waste is the top priority. However, waste construction waste in buildings is the first to bear the brunt. The life cycle of buildings will bring a huge amount of waste construction waste, and the reuse of these waste from abandoned buildings is indispensable. Therefore, the concept of recycled aggregate was proposed. Recycled aggregate refers to building materials with different particle sizes formed by crushing and screening of waste construction waste. It has the following advantages: good water permeability, no freezing and no shrinkage when encountering water. Recycled aggregate can be put into construction, such as concrete, roadbed and other projects for reuse. The recycled aggregates obtained by crushing abandoned buildings are of different sizes and need to be screened to obtain aggregates that meet the specifications, which often produce a lot of dust mixed in them.

[0003] Therefore, the screening process of aggregates will generate a large amount of dust, which will not only cause serious pollution to the environment, but also greatly interfere with the visual field caused by the dust. At the same time, the dust generated by the dust will cause harm to human health if inhaled by the human body, and the dust will be scattered in the operating equipment, which will affect the heat dissipation of the operating equipment, thereby greatly reducing the efficiency of the operating equipment and even causing a sudden increase in the probability of failure of the operating equipment. In view of this, there is an urgent need for a recycled aggregate screening device with dust removal capability.

[0004] In view of the above problems, a study has provided a construction recycled aggregate screening device (application number: CN113171877A), which performs airflow screening on the formed aggregate to ensure that the dust mixed in the aggregate is completely screened out. When the screening device and dust collection device are too complicated and imperfect. Therefore, the present invention provides a simple aggregate screening and dust removal device based on the traditional aggregate screening principle. Summary of the invention

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is:

[0006] The present invention provides a recycled aggregate screening and dust removal device, comprising an operating chamber, a screening device, a circulation device, a receiving chamber and a dust removal device; the operating chamber comprises a plurality of enclosures and a plurality of brackets; all of the enclosures form the operating chamber into a shell with an open top; the shell constitutes the receiving chamber, and the receiving chamber is divided into a plurality of side-by-side chambers by a plurality of the enclosures; all of the brackets are arranged above the receiving chamber, and each adjacent two enclosures are detachably connected by the brackets; the screening device is arranged at the opening at the top of the receiving chamber; the screening device can screen the recycled aggregate into each of the chambers; the circulation device is arranged above the receiving chamber and on one side of the screening device; the circulation device is connected to the screening device; the circulation device is used to supply the screening device; the dust removal device is arranged on the bracket; the dust removal device is used to remove dust from the receiving chamber.

[0007] Furthermore, the screening device includes a fine aggregate screening tube, a plurality of fine aggregate outlets, a second screening channel, a coarse aggregate screening tube, a coarse aggregate outlet, a substandard aggregate screening tube and a substandard aggregate outlet; all the fine aggregate outlets are round holes with a diameter of 4.5 mm; all the fine aggregate outlets are opened on the tube wall of the fine aggregate screening tube; the first end of the coarse aggregate screening tube is arranged in the fine aggregate screening tube; the second screening channel is arranged on the tube body of the coarse aggregate screening tube, and the second screening channel is close to the fine aggregate screening tube. at the second end of the coarse aggregate screening tube; a plurality of 4.5 mm circular holes are opened on the tube wall at the first end of the coarse aggregate screening tube; the coarse aggregate outlet is opened at the second end of the coarse aggregate screening tube; the first end of the substandard aggregate screening tube passes through the coarse aggregate screening tube and is arranged in the fine aggregate screening tube; the substandard aggregate screening tube is arranged on the inner tube wall of the coarse aggregate screening tube and the fine aggregate screening tube, and a plurality of 10 mm circular holes are opened; the substandard aggregate outlet is arranged at the second end of the substandard aggregate screening tube.

[0008] Furthermore, the circulation device includes a feed port, a circulation screening inlet, a circulation screening channel, a circulation screening outlet and a conveyor belt; the circulation screening inlet and the circulation screening outlet are opened at both ends of the circulation screening channel; the feed port is opened on the circulation screening channel, and the feed port is arranged close to the circulation screening inlet; the conveyor belt is arranged through the circulation screening channel; the circulation screening inlet and the circulation screening outlet are respectively connected to the two ends of the fine aggregate screening tube, and the circulation screening inlet is connected to the first end of the substandard aggregate screening tube; the circulation screening outlet is connected to the tube wall of the substandard aggregate screening tube.

[0009] Furthermore, the receiving chamber includes a fine aggregate receiving chamber, a coarse aggregate receiving chamber and a substandard aggregate receiving chamber; the fine aggregate receiving chamber, the coarse aggregate receiving chamber and the substandard aggregate receiving chamber are arranged side by side in sequence; the fine aggregate receiving chamber, the coarse aggregate receiving chamber and the substandard aggregate receiving chamber are separated by the enclosure; a turntable is arranged on the top of the enclosure between each of the receiving chambers; the dust removal device is arranged on the turntable; the dust removal device can rotate with the turntable; the fine aggregate outlet is arranged above the fine aggregate receiving chamber; the coarse aggregate outlet is arranged above the coarse aggregate receiving chamber; the substandard aggregate outlet is arranged above the substandard aggregate receiving chamber.

[0010] Furthermore, the dust removal device includes an electrostatic dust suction device and a sprinkler device; the sprinkler device is arranged on the bracket; the sprinkler device is arranged directly above the receiving chamber; the sprinkler device is used to sprinkle water into the receiving chamber; the electrostatic dust suction device is arranged on both sides of the receiving chamber; and the electrostatic dust suction device covers the enclosures on both sides of the receiving chamber.

[0011] Furthermore, the enclosure is made of recycled concrete; and the bracket is made of aluminum.

[0012] Furthermore, a method for screening and dust removal of recycled aggregates is provided, which uses the above-mentioned device for screening and dust removal of recycled aggregates, and comprises the following steps:

[0013] S1: Add aggregate, add recycled aggregate from the feed port, and convey the recycled aggregate to the screening device through the conveyor belt in the circulation device;

[0014] S2: Initial dust removal, when adding recycled aggregate, the sprinkler in the dust removal device is turned on to reduce dust;

[0015] S3: Circular screening, open the transfer machine, close the second screening channel, open the circulating screening channel, and convey the aggregate to the screening device through the conveyor belt for screening. The screening device passes the aggregate screened initially into the circulating device through the circulating screening inlet, and the circulating device passes the aggregate screened initially into the screening device through the circulating screening outlet for circulating screening;

[0016] S4: Secondary dust removal: during the cyclic screening process, the electrostatic dust collector in the dust removal device is turned on to suppress the dust from aggregate screening;

[0017] S5: Secondary screening, close the transfer machine and the circulation device, open the second screening channel and close the circulation screening channel, then open the transfer machine to perform secondary screening on the recycled aggregate;

[0018] S6: Aggregate collection. When the collecting chamber reaches full load, the fine aggregate collecting chamber and the coarse aggregate collecting chamber are recycled, and the aggregates in the collecting chamber that do not meet the standards are crushed for the second time.

[0019] The advantages or beneficial effects of the present invention are:

[0020] The recycled aggregate screening and dust removal device provided by the present invention has the following advantages:

[0021] (1) Green and environmentally friendly. The traditional aggregate screening device only has a single aggregate screening function, and does not take into account the pollution to the environment caused by the dust brought by the screening process. The present invention adds a dust removal device on the top of the screening device, and removes dust in a closed environment to avoid pollution to the environment. At the same time, all materials of the present invention are taken from waste materials, which are reused through processing, and are consistent with the main body of the recycled aggregate of the recycled aggregate screening and dust removal device of the present invention. The reuse of waste materials greatly saves resources and reduces the stacking of waste garbage. It is a sustainable development in sustainable development, creating green with green.

[0022] (2) Full automation. The present invention divides the recycled aggregate screening area into a screening device, a circulation device, a material collection chamber and a dust removal device. With one-button start, circulation screening, secondary screening, aggregate classification and dust removal can be achieved, which greatly reduces labor costs and time costs. Compared with traditional screening devices that mainly rely on manual labor, the operating efficiency is greatly improved.

[0023] (3) Ingenious structure. The present invention rotates the screening device through a turntable. When the aggregate enters the screening device, the centrifugal action causes the recycled aggregate to undergo centrifugal motion. During the motion, aggregates of corresponding sizes will enter the corresponding receiving chamber through the discharge port. Compared with traditional screening devices, the principle of the present invention is more ingenious and simple, and the efficiency is also higher.

[0024] (4) Screening accuracy. The screening device in the present invention is a device added in consideration of the low screening rate of the traditional screening device. Because the aggregates are densely distributed and quickly screened during the screening process, it is inevitable that some aggregates will be screened into the wrong area. The circulation device of the present invention can perform multiple circulation screening on the same batch of aggregates to ensure the accuracy of aggregate screening.

[0025] (5) Simple and beautiful. The present invention divides aggregate screening, aggregate collection and dust removal into three parts, with a symmetrical design that is clear at a glance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention and its features, configurations and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts throughout the drawings. The drawings are not drawn to scale, but rather to illustrate the subject matter of the present invention.

[0027] Figure 1 This is a layout diagram of a recycled aggregate screening and dust removal device provided in Example 1 of the present invention;

[0028] Figure 2 It is a schematic diagram of a working chamber in a recycled aggregate screening and dust removal device provided in Example 1 of the present invention;

[0029] Figure 3 is a schematic diagram of a screening device in a recycled aggregate screening and dust removal device provided in Example 1 of the present invention;

[0030] Figure 4 is a schematic diagram of a circulation device in a recycled aggregate screening and dust removal device provided in Example 1 of the present invention;

[0031] Figure 5 It is a schematic diagram of a material receiving chamber in a recycled aggregate screening and dust removal device provided in Example 1 of the present invention;

[0032] Figure 6 It is a schematic diagram of a dust removal device in a recycled aggregate screening and dust removal device provided in Example 1 of the present invention. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. It should be noted that the terms used in the present invention are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application.

[0034] It should be understood that when the terms “include” and / or “comprise” are used in the present specification, they specify the presence of features, steps, operations, devices, components and / or their combinations.

[0035] If the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] The terms “first”, “second” and “third” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0037] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" 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, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The technical solutions in the embodiments of the present invention are described below in conjunction with the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work belong to the protection scope of the present invention.

[0039] Example 1

[0040] A recycled aggregate screening and dust removal device provided in Example 1 of the present invention, such as Figure 1 and Figure 2 As shown, it includes an operation room 1, a screening device 2, a circulation device 3, a receiving chamber 4 and a dust removal device 5; the operation room 1 includes a plurality of enclosures 11 and a plurality of brackets 12; all the enclosures 11 form the operation room 1 into a shell with an open top; the shell constitutes the receiving chamber 4, and the receiving chamber 4 is divided into a plurality of side-by-side chambers by a plurality of enclosures 11; all the brackets 12 are arranged above the receiving chamber 4, and each adjacent two enclosures 11 are detachably connected by the brackets 12; the screening device 2 is arranged at the opening at the top of the receiving chamber 4; the screening device 2 can screen the recycled aggregate into each chamber; the circulation device 3 is arranged above the receiving chamber 4 and on one side of the screening device 2; the circulation device 3 is connected to the screening device 2; the circulation device 3 is used to supply materials to the screening device 2; the dust removal device 5 is arranged on the bracket 12; the dust removal device 5 is used to remove dust from the receiving chamber 4.

[0041] The improved recycled aggregate screening and dust removal device of the present embodiment 1 has the following advantages: (1) Green and environmentally friendly. The present embodiment 1 adds a dust removal device 5 on the top of the screening device, and removes dust in a closed environment to avoid pollution to the environment. At the same time, all materials of the present embodiment 1 are taken from waste materials, which are processed and reused, and are consistent with the main body of the recycled aggregate screening and dust removal device of the present invention. The reuse of waste materials greatly saves resources and reduces the stacking of waste garbage. It is a sustainable development in sustainable development, creating green with green;

[0042] (2) Full automation. In this embodiment 1, the recycled aggregate screening area is divided into a screening device 2, a circulation device 3, a material receiving chamber 4 and a dust removal device 5. With one-button start, circulation screening, secondary screening, aggregate classification and dust removal can be achieved, which greatly reduces labor costs and time costs. Compared with traditional screening devices that are mainly manpower, the operating efficiency is greatly improved;

[0043] (3) Ingenious structure. In the present embodiment 1, the screening device 2 is rotated by the turntable 13. When the aggregate enters the screening device 2, the centrifugal action causes the recycled aggregate to undergo centrifugal motion. During the motion, the aggregate of corresponding size will enter the corresponding receiving chamber 4 through the discharge port. Compared with the traditional screening device, the principle of the present invention is more ingenious and simple, and the efficiency is also higher;

[0044] (4) Screening accuracy. The screening device 2 in the present embodiment 1 is a device added in consideration of the low screening rate of the conventional screening device. Because the aggregates are densely distributed and screened quickly during the screening process, it is inevitable that some aggregates will be screened to the wrong area. The circulation device 3 of the present invention can perform multiple circulation screening on the same batch of aggregates to ensure the accuracy of aggregate screening.

[0045] (5) Simple and beautiful. In the present embodiment 1, aggregate screening, aggregate collection and dust removal are divided into three parts, with a symmetrical design, which is clear at a glance.

[0046] In order to provide a screening device 2 suitable for this device, this embodiment 1 provides a recycled aggregate screening and dust removal device, such as Figure 3 As shown, the screening device 2 includes a fine aggregate screening tube 21, a plurality of fine aggregate outlets 22, a second screening channel 23, a coarse aggregate screening tube 24, a coarse aggregate outlet 25, a substandard aggregate screening tube 26 and a substandard aggregate outlet 27; all fine aggregate outlets 22 are round holes with a diameter of 4.5 mm; all fine aggregate outlets 22 are opened on the wall of the fine aggregate screening tube 21; the first end of the coarse aggregate screening tube 24 is arranged in the fine aggregate screening tube 21; the second screening channel 23 is arranged on the tube body of the coarse aggregate screening tube 24, and the second screening channel 23 is close to the fine aggregate screening tube 21. The second end of the coarse aggregate screening tube 21 is provided; a plurality of 4.5 mm round holes are provided on the tube wall at the first end of the coarse aggregate screening tube 24; a coarse aggregate outlet 25 is provided at the second end of the coarse aggregate screening tube 24; a first end of the substandard aggregate screening tube 26 passes through the coarse aggregate screening tube 24 and is arranged in the fine aggregate screening tube 21; the substandard aggregate screening tube 26 is arranged on the inner tube wall of the coarse aggregate screening tube 24 and the fine aggregate screening tube 21, and a plurality of 10 mm round holes are provided; a substandard aggregate outlet 27 is provided at the second end of the substandard aggregate screening tube 26.

[0047] In this embodiment 1, the circulation device 3 actually first passes the recycled aggregate into the substandard aggregate screening tube 26 for primary screening. At this time, the second screening channel 23 is closed, and the substandard aggregate, i.e., the aggregate with a diameter greater than 10 mm, remains in the substandard aggregate screening tube 26, and the aggregate with a diameter less than 10 mm is screened into the coarse aggregate screening tube 24. The aggregate with a diameter between 4.5 mm and 10 mm remains in the coarse aggregate screening tube 24, and the aggregate with a diameter less than 4.5 mm is screened into the fine aggregate screening tube 21. , and then discharged, the second screening channel 23 is in a closed state, coarse aggregate and substandard aggregate cannot be discharged from the corresponding outlets, the substandard aggregate screening pipe 26 and the circulating screening device 2 form a closed loop, because the substandard aggregate screening pipe 26 will be mixed with coarse aggregate or fine aggregate, and then the aggregate in the substandard aggregate screening pipe 26 is circulated and screened again through the circulation device 3, and finally the substandard aggregate is discharged from the substandard aggregate outlet 27, the coarse aggregate is discharged from the coarse aggregate outlet 25, and the fine aggregate is discharged from the fine aggregate outlet 22.

[0048] Preferably, the recycled aggregate screening and dust removal device provided in this embodiment 1 is as follows: Figure 4 As shown, the circulation device 3 includes a feed port 31, a circulation screening inlet 32, a circulation screening channel 33, a circulation screening outlet 34 and a conveyor belt 35; the circulation screening inlet 32 ​​and the circulation screening outlet 34 are opened at both ends of the circulation screening channel 33; the feed port 31 is opened on the circulation screening channel 33, and the feed port 31 is arranged close to the circulation screening inlet 32; the conveyor belt 35 is arranged through the circulation screening channel 33; the circulation screening inlet 32 ​​and the circulation screening outlet 34 are respectively connected to the two ends of the fine aggregate screening tube 21, and the circulation screening inlet 32 ​​is connected to the first end of the substandard aggregate screening tube 26; the circulation screening outlet 34 is connected to the tube wall of the substandard aggregate screening tube 26.

[0049] In this embodiment 1, since the fine aggregate screening tube 21, the coarse aggregate screening tube 24 and the substandard aggregate screening tube 26 in the screening device 2 are sequentially connected from the outside to the inside, the layers are clear, and the recycled aggregate is screened from the substandard aggregate screening tube 26, the coarse aggregate screening tube 24 and the fine aggregate screening tube 21 in turn, and finally the recycled aggregate is discharged from each corresponding screening tube, and the circulating screening inlet 32 ​​and the circulating screening outlet 34 are connected to the substandard aggregate screening tube 26, which can directly The material is transported to the screening device 2 and screened layer by layer; during the initial screening process, fine aggregate is discharged. During the screening process, the second screening channel 23 remains closed, the screening device 2 remains in a rotating state, and after the circulating device 3 passes the aggregate, as the screening device 2 rotates, the aggregate in the substandard aggregate screening pipe 26 returns to the circulating screening inlet 32, is transported to the circulating screening outlet 34 under the conveyor belt 35, and then passes into the screening device 2 for circulating screening.

[0050] In order to distinguish and collect recycled aggregates of various particle sizes, a recycled aggregate screening and dust removal device is provided in this embodiment 1, such as Figure 5 As shown, the receiving chamber 4 includes a fine aggregate receiving chamber 41, a coarse aggregate receiving chamber 42 and a substandard aggregate receiving chamber 43; the fine aggregate receiving chamber 41, the coarse aggregate receiving chamber 42 and the substandard aggregate receiving chamber 43 are arranged side by side in sequence; the fine aggregate receiving chamber 41, the coarse aggregate receiving chamber 42 and the substandard aggregate receiving chamber 43 are separated by a surrounding plate 11; a turntable 13 is arranged on the top of the surrounding plate 11 between each receiving chamber 4; a dust removal device 5 is arranged on the turntable 13; the dust removal device 5 can rotate with the turntable 13; the fine aggregate outlet 22 is arranged above the fine aggregate receiving chamber 41; the coarse aggregate outlet 25 is arranged above the coarse aggregate receiving chamber 42; the substandard aggregate outlet 27 is arranged above the substandard aggregate receiving chamber 43.

[0051] In this embodiment 1, there are four receiving chambers 4, including two fine aggregate receiving chambers 41, one coarse aggregate receiving chamber 42 and one substandard aggregate receiving chamber 43. The four receiving chambers 4 are separated by three enclosures 11. The dust removal device 5 is arranged on the three enclosures 11, and as the turntable 13 on the three enclosures 11 rotates, the fine aggregate is discharged from the fine aggregate outlet 22 to the fine aggregate receiving chamber 41, the coarse aggregate is discharged from the coarse aggregate outlet 25 to the coarse aggregate receiving chamber 42, and the substandard aggregate is discharged from the substandard aggregate outlet to the substandard aggregate receiving chamber 43, thereby completing the material collection work.

[0052] Preferably, the recycled aggregate screening and dust removal device provided in this embodiment 1 is as follows: Figure 6 As shown, the dust removal device 5 includes an electrostatic dust suction device 52 and a watering device 51; the watering device 51 is arranged on the bracket 12; the watering device 51 is arranged directly above the receiving chamber 4; the watering device 51 is used to sprinkle water on the receiving chamber 4; the electrostatic dust suction device 52 is arranged on both sides of the receiving chamber 4; and the electrostatic dust suction device 52 covers the enclosures 11 on both sides of the receiving chamber 4. In this embodiment 1, the watering device 51 is supplied with water by a pipeline and is arranged on the bracket 12. The pipeline is covered with watering ports. When started, the operating range can cover the entire working room 1; the electrostatic dust suction device 52 is a metal plate, and the plate surface is covered with electrostatic dust suction ports. When started, the operating range can cover the entire working room 1.

[0053] Preferably, the enclosure 11 is made of recycled concrete; and the bracket 12 is made of aluminum.

[0054] Preferably, the method for screening and dust removal of recycled aggregate provided in this embodiment 1 comprises the following steps:

[0055] S1: Add aggregates, add recycled aggregates from the feed port 31, and convey the recycled aggregates to the screening device 2 through the conveyor belt 35 in the circulation device 3;

[0056] S2: Initial dust removal, when adding recycled aggregate, the sprinkler 51 in the dust removal device 5 is turned on to reduce dust;

[0057] S3: Circular screening, open the transfer machine 13, close the second screening channel 23, open the circulating screening channel 33, and convey the aggregate to the screening device 2 through the conveyor belt 35 for screening. The screening device 2 passes the initially screened aggregate into the circulating device 3 through the circulating screening inlet 32, and the circulating device 3 passes the initially screened aggregate into the screening device 2 through the circulating screening outlet 34 for circular screening;

[0058] S4: secondary dust removal, during the cyclic screening process, the electrostatic dust collector 52 in the dust removal device 5 is turned on to suppress the aggregate screening dust;

[0059] S5: secondary screening, closing the turntable 13 and the circulation device 3, opening the second screening channel 23, and closing the circulation screening channel 33, and then opening the turntable 13 to perform secondary screening on the recycled aggregate;

[0060] S6: Aggregate collection. When the collecting chamber 4 reaches full load, the fine aggregate collecting chamber 41 and the coarse aggregate collecting chamber 42 are recycled, and the aggregate in the substandard aggregate collecting chamber 43 is subjected to secondary crushing.

[0061] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made by using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A recycled aggregate screening and dust removal device, characterized in that: Including operation room, screening device, circulation device, material receiving room and dust removal devices; The working room comprises a plurality of enclosures and a plurality of brackets; all of the enclosures form the working room into a shell with an open top; the shell forms the receiving room, and the receiving room is divided into a plurality of chambers arranged side by side by a plurality of the enclosures; all of the brackets are arranged above the receiving room, and every two adjacent enclosures are detachably connected by the brackets; The screening device is arranged at the opening of the top of the material receiving chamber; the screening device can screen the recycled aggregate into each of the chambers; The circulation device is arranged above the material receiving chamber and on one side of the screening device; The circulation device is connected to the screening device; the circulation device is used to supply material to the screening device; The dust removal device is arranged on the bracket; the dust removal device is used to remove dust from the material receiving chamber; The screening device comprises a fine aggregate screening pipe, a plurality of fine aggregate outlets, a second screening channel, a coarse aggregate screening pipe, a coarse aggregate outlet, a substandard aggregate screening pipe and a substandard aggregate outlet; All of the fine aggregate outlets are circular holes with a diameter of 4.5 mm; all of the fine aggregate outlets are opened on the wall of the fine aggregate screening tube; The first end of the coarse aggregate screening tube is arranged in the fine aggregate screening tube; the second screening channel is arranged on the tube body of the coarse aggregate screening tube, and the second screening channel is close to the second end of the fine aggregate screening tube; a plurality of 4.5 mm round holes are opened on the tube wall at the first end of the coarse aggregate screening tube; the coarse aggregate outlet is opened at the second end of the coarse aggregate screening tube; The first end of the substandard aggregate screening tube passes through the coarse aggregate screening tube and is arranged in the fine aggregate screening tube; the substandard aggregate screening tube is arranged on the inner tube wall of the coarse aggregate screening tube and the fine aggregate screening tube, and a plurality of 10 mm round holes are opened; the substandard aggregate outlet is arranged at the second end of the substandard aggregate screening tube; The circulation device comprises a feed inlet, a circulation screening inlet, a circulation screening channel, a circulation screening outlet and a conveyor belt; The circulating screening inlet and the circulating screening outlet are provided at both ends of the circulating screening channel; the feeding port is provided on the circulating screening channel, and the feeding port is arranged close to the circulating screening inlet; the conveyor belt is arranged to penetrate the circulating screening channel; the circulating screening inlet and the circulating screening outlet are respectively connected to both ends of the fine aggregate screening tube, and the circulating screening inlet is communicated with the first end of the substandard aggregate screening tube; the circulating screening outlet is communicated with the tube wall of the substandard aggregate screening tube; The material receiving chamber includes a fine aggregate receiving chamber, a coarse aggregate receiving chamber and a substandard aggregate receiving chamber; The fine aggregate receiving chamber, the coarse aggregate receiving chamber and the substandard aggregate receiving chamber are arranged side by side in sequence; the fine aggregate receiving chamber, the coarse aggregate receiving chamber and the substandard aggregate receiving chamber are separated by the enclosure; a turntable is arranged on the top of the enclosure between each of the receiving chambers; the dust removal device is arranged on the turntable; the dust removal device can rotate with the turntable; The fine aggregate outlet is arranged above the fine aggregate receiving chamber; the coarse aggregate outlet is arranged above the coarse aggregate receiving chamber; the substandard aggregate outlet is arranged above the substandard aggregate receiving chamber; The dust removal device includes an electrostatic dust suction device and a water sprinkler; the water sprinkler is arranged on the bracket; the water sprinkler is arranged just above the material receiving chamber; The watering device is used to spray water to the receiving chamber; the electrostatic dust suction device is arranged on both sides of the receiving chamber; and the electrostatic dust suction device covers the enclosures on both sides of the receiving chamber; The recycled aggregate screening and dust removal method using the recycled aggregate screening and dust removal device comprises the following steps: S1: Add aggregates, add recycled aggregates from the feed port, and convey the recycled aggregates to the screening device through the conveyor belt in the circulation device; S2: Initial dust removal, when adding recycled aggregate, the sprinkler in the dust removal device is turned on to reduce dust; S3: Circular screening, open the transfer machine, close the second screening channel, open the circulating screening channel, and convey the aggregate to the screening device through the conveyor belt for screening. The screening device passes the aggregate screened initially into the circulating device through the circulating screening inlet, and the circulating device passes the aggregate screened initially into the screening device through the circulating screening outlet for circulating screening; S4: Secondary dust removal: during the cyclic screening process, the electrostatic dust collector in the dust removal device is turned on to suppress the dust from aggregate screening; S5: Secondary screening, close the transfer machine and the circulation device, open the second screening channel and close the circulation screening channel, then open the transfer machine to perform secondary screening on the recycled aggregate; S6: Aggregate collection. When the collecting chamber reaches full load, the fine aggregate collecting chamber and the coarse aggregate collecting chamber are recycled, and the aggregates in the collecting chamber that do not meet the standards are crushed for the second time.

2. The recycled aggregate screening and dust removal device according to claim 1, characterized in that: The enclosure is made of recycled concrete; the bracket is made of aluminum.

Images