A high-efficiency flotation separation device for concrete aggregates

Abstract

This utility model discloses a high-efficiency flotation and separation device for concrete aggregates, relating to the field of concrete aggregate separation technology. The utility model includes a machine body, inside which is a stirring mechanism. One end of the stirring mechanism is equipped with a gas-liquid conveying mechanism. Several elastic opening and closing mechanisms are arranged inside the stirring mechanism. A spiral discharge mechanism is arranged below the stirring mechanism. A debris separation mechanism is arranged on one side of the machine body, and a water circulation mechanism is arranged at the discharge end of the debris separation mechanism. This utility model uses the gas-liquid conveying mechanism to pressurize and transport reagents and air to the stirring end of the stirring mechanism. The fluid and air pressure drive the built-in dynamic elastic opening and closing mechanisms to open, allowing the reagents and microbubbles to be directionally sprayed into the concrete mortar through the porous structure of the stirring end of the stirring mechanism. This achieves efficient interface contact between the reagents, bubbles, and aggregates. Simultaneously, the stirring shear force further enhances three-phase mixing, significantly improving the flotation separation rate of hydrophobic impurities.

Description

Technical Field

[0001] This utility model belongs to the field of concrete aggregate sorting technology, and specifically relates to a high-efficiency flotation sorting device for concrete aggregates. Background Technology

[0002] Concrete aggregates are granular materials that play a skeletal role in concrete. They are divided into coarse aggregates and fine aggregates. Their functions include enhancing concrete strength, reducing shrinkage deformation, and reducing cement usage. At the same time, they must meet technical requirements such as reasonable gradation, high hardness, and cleanliness free of impurities. They are key components that affect the durability and workability of concrete.

[0003] The high-efficiency flotation separation device for concrete aggregates is a specialized device that uses flotation technology to quickly separate impurities (such as lightweight plastics, wood chips, organic matter, etc.) in concrete aggregates (such as recycled aggregates or natural aggregates). By adjusting the differences in physicochemical interactions between reagents, bubbles, and materials, it achieves efficient enrichment and separation of target components and is widely used in the fields of construction waste recycling and clean aggregate production.

[0004] Existing concrete aggregate flotation and separation equipment mainly consists of a mixing device, an aeration system, a reagent addition module, a foam collection mechanism, and an intelligent control system. Its working process is as follows: after the aggregate is crushed and screened, it is mixed with water to form a slurry. After the slurry enters the flotation machine, the hydrophobicity of the target particles (such as light impurities) is adjusted by adding collectors, frothers, and other reagents. The aeration device generates microbubbles, and the hydrophobic particles attach to the bubbles and float to form a foam layer. Impurities are discharged by the scraper, while hydrophilic aggregates settle to the bottom. The intelligent control system adjusts the reagent ratio and agitation intensity in real time to achieve efficient and precise clean separation of aggregates.

[0005] However, in existing concrete aggregate flotation and separation equipment, the traditional process involves directly spraying reagents onto the surface of the slurry and forcibly mixing them through subsequent stirring. This can easily lead to excessively high local concentrations of reagents and delayed dispersion, making it difficult for the reagents to quickly penetrate into the slurry. Some reagents are wasted due to premature adsorption or oxidation by air bubbles. Furthermore, the probability of contact between hydrophobic particles and reagents decreases during the stirring process, affecting the efficiency of flotation and separation. Utility Model Content

[0006] In view of the problem that it is difficult to quickly penetrate the reagent into the slurry through subsequent stirring in related technologies, this utility model proposes a high-efficiency flotation and separation device for concrete aggregate to overcome the above-mentioned technical problems existing in the existing related technologies.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0008] This utility model is a high-efficiency flotation and separation device for concrete aggregate, including a machine body, an agitation mechanism is provided inside the machine body, a gas-liquid conveying mechanism is provided at one end of the agitation mechanism, a plurality of elastic opening and closing mechanisms are provided inside the agitation mechanism, a spiral discharge mechanism is provided below the agitation mechanism, a debris separation mechanism is provided on one side of the machine body, and a water circulation mechanism is provided at the discharge end of the debris separation mechanism.

[0009] The mixing mechanism is used to mix concrete mortar. At the same time, the gas-liquid conveying mechanism delivers the agent and air to the mixing end of the mixing mechanism to increase the pressure inside the mixing end. Meanwhile, the conveying ends of several elastic opening and closing mechanisms move out from inside the mixing end under the pressure, allowing the agent and air to flow out from inside the mixing end through the conveying ends.

[0010] Furthermore, the stirring mechanism includes a motor, which is fixedly installed on one side of the machine body. The output shaft of the motor is fixedly connected to a stirring rod, which is rotatably connected inside the machine body. The surface of the stirring rod is provided with several medicinal gas discharge holes, and a filter screen is fixedly connected inside the machine body.

[0011] Furthermore, the gas-liquid conveying mechanism includes a connecting pipe, which is rotatably connected to one end of the stirring rod. The other end of the connecting pipe is fixedly connected to a medicine pump, and the feed end of the medicine pump is fixedly connected to a medicine tank. Both the medicine pump and the medicine tank are fixedly installed on one side of the machine body. An air compressor is also fixedly installed on one side of the machine body, and the air output end of the air compressor is connected to the connecting pipe.

[0012] Furthermore, the elastic opening and closing mechanism includes an impact plate, which is rotatably connected inside the stirring rod. A connecting rod is slidably connected to one end of the impact plate, and a spring is fixedly connected to one end of the connecting rod. One end of the spring is fixedly connected inside the stirring rod, and the connecting rod is slidably connected inside the stirring rod. A driving rod is rotatably connected inside the connecting rod, and an opening and closing rod is rotatably connected to one end of the driving rod. The opening and closing rod is slidably connected inside the drug gas discharge hole, and a switch hole is provided inside the opening and closing rod.

[0013] Furthermore, the spiral discharge mechanism includes a discharge pipe, which is fixedly connected to one side of the machine body. One end of the discharge pipe is fixedly connected to one side of the machine body, and a second motor is fixedly connected to it. A discharge screen is fixedly connected below the filter screen. The output shaft of the second motor is fixedly connected to a spiral rod, one of which is rotatably connected inside the discharge screen.

[0014] Furthermore, the debris separation mechanism includes a water tank, which is fixedly connected to the back of the machine body. A drain hole is provided on the back of the machine body, and a discharge pipe is fixedly connected to the drain hole, with the discharge pipe corresponding to the top of the water tank.

[0015] Furthermore, the water circulation mechanism includes a cleaning screen, which is fixedly connected inside the water tank. A circulation pipe is fixedly connected to one side of the water tank, and a water pump is fixedly installed in the middle of the circulation pipe. The water outlet of the circulation pipe is fixedly installed on the top of the machine body, and the water pump is fixedly installed on the top of the machine body.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model delivers concrete mortar into the machine body through the feed end, and then starts the mixing mechanism to mix it evenly. The synchronously operating gas-liquid conveying mechanism pressurizes the reagent and air and delivers them to the mixing end of the mixing mechanism. The built-in dynamic elastic opening and closing mechanism is driven by the fluid and air pressure to open, so that the reagent and microbubbles are directionally sprayed into the concrete mortar through the porous structure of the mixing end of the mixing mechanism, realizing efficient interface contact between reagent, bubble and aggregate. At the same time, the mixing shear force further enhances the three-phase mixing and significantly improves the flotation separation rate of hydrophobic impurities.

[0018] 2. In this invention, the pressurized agent and air continuously press against the impact plate during circulation, thus keeping the switch hole outside the gas discharge hole. When the air and agent mixture is no longer needed, the pressure of the agent and air disappears, the spring returns to its elasticity, and the connecting rod resets, causing the connecting rod to position the impact plate. Simultaneously, the connecting rod causes the drive rod to slide the opening and closing rod in the gas discharge hole, allowing the switch hole to slide into the gas discharge hole, thus closing the gas discharge hole. This closing process effectively blocks the reverse penetration of concrete mortar inside the machine.

[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a side view of the present invention.

[0023] Figure 3 This is a partial cross-sectional structural diagram of the present invention;

[0024] Figure 4 This is a schematic diagram of the stirring mechanism of this utility model;

[0025] Figure 5 This is a partial cross-sectional structural diagram of the stirring rod of this utility model;

[0026] Figure 6 For the present utility model Figure 5 Enlarged structural diagram at point A in the middle.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1. Machine body; 2. Stirring mechanism; 201. Motor 1; 202. Stirring rod; 203. Gas exhaust port; 204. Filter screen; 3. Gas-liquid conveying mechanism; 301. Connecting pipe; 302. Medicine pump; 303. Medicine tank; 304. Air compressor; 4. Screw discharge mechanism; 401. Discharge pipe; 402. Motor 2; 403. Discharge screen; 404. Screw rod; 5. Elastic opening and closing mechanism; 501. Impact plate; 502. Spring; 503. Connecting rod; 504. Drive rod; 505. Opening and closing rod; 506. Switch hole; 6. Debris separation mechanism; 601. Water tank; 602. Sewage outlet; 603. Discharge pipe; 7. Water circulation mechanism; 701. Debris removal screen; 702. Circulation pipe; 703. Water pump. Detailed Implementation

[0029] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0030] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0031] Please see Figures 1-6 As shown, this utility model is a high-efficiency flotation and separation device for concrete aggregate, including a machine body 1. The machine body 1 is equipped with a stirring mechanism 2. A gas-liquid conveying mechanism 3 is provided at one end of the stirring mechanism 2. Several elastic opening and closing mechanisms 5 are provided inside the stirring mechanism 2. A spiral discharge mechanism 4 is provided below the stirring mechanism 2. A debris separation mechanism 6 is provided on one side of the machine body 1. A water circulation mechanism 7 is provided at the discharge end of the debris separation mechanism 6.

[0032] The mixing mechanism 2 is used to mix concrete mortar. At the same time, the gas-liquid conveying mechanism 3 delivers the agent and air to the mixing end of the mixing mechanism 2 to increase the pressure inside the mixing end. Meanwhile, the conveying ends of several elastic opening and closing mechanisms 5 move out from the inside of the mixing end under the pressure, so that the agent and air flow out from the inside of the mixing end through the conveying ends.

[0033] Concrete mortar is fed into the machine body 1 through the feed end. The mixing mechanism 2 is started to mix the concrete mortar. At the same time, the gas-liquid conveying mechanism 3 delivers the reagent and air to the mixing end of the mixing mechanism 2. During the conveying process, the pressure generated by the reagent and air drives several elastic opening and closing mechanisms 5 to open, so that the reagent and air are delivered into the concrete mortar through the mixing end of the mixing mechanism 2, so that the reagent and concrete mortar are fully mixed. During the mixing process, air bubbles rise to form foam, which carries impurities to float on the liquid surface. With the continuous input of concrete mortar, the liquid surface will move upward, so that the impurities on the liquid surface are discharged and separated by the impurity separation mechanism 6. The separated water returns to the machine body 1 through the water circulation mechanism 7. The heavier aggregates will sink and be discharged by the screw discharge mechanism 4, thus completing the efficient flotation separation of concrete aggregates.

[0034] After the concrete mortar is fed into the machine body 1 through the feed end, the mixing mechanism 2 is started to mix it evenly. The gas-liquid conveying mechanism 3, which operates synchronously, pressurizes the reagent and air and delivers them to the mixing end of the mixing mechanism 2. The built-in dynamic elastic opening and closing mechanism 5 is driven to open by the fluid and air pressure, so that the reagent and microbubbles are directionally sprayed into the concrete mortar through the porous structure of the mixing end of the mixing mechanism 2, realizing efficient interface contact between reagent, bubble and aggregate. At the same time, the mixing shear force further enhances the three-phase mixing and significantly improves the flotation separation rate of hydrophobic impurities.

[0035] In one embodiment, the stirring mechanism 2 includes a motor 201, which is fixedly installed on one side of the machine body 1. The output shaft of the motor 201 is fixedly connected to a stirring rod 202, which is rotatably connected inside the machine body 1. The surface of the stirring rod 202 is provided with a plurality of medicinal gas discharge holes 203, and a filter screen 204 is fixedly connected inside the machine body 1.

[0036] After the concrete mortar is fed into the machine body 1 through the feed end, the motor 201 is started, which drives the mixing rod 202 to rotate, so that the mixing rod 202 mixes the concrete mortar. At the same time, the filter screen 204 intercepts the concrete mortar, so that the concrete mortar is within the mixing range of the mixing rod 202, thereby improving the mixing effect.

[0037] In one embodiment, the gas-liquid conveying mechanism 3 includes a connecting pipe 301, which is rotatably connected to one end of the stirring rod 202. The other end of the connecting pipe 301 is fixedly connected to a medicine pump 302. The feed end of the medicine pump 302 is fixedly connected to a medicine tank 303. The medicine pump 302 and the medicine tank are both fixedly installed on one side of the machine body 1. An air compressor 304 is also fixedly installed on one side of the machine body 1. The air output end of the air compressor 304 is connected to the connecting pipe 301.

[0038] By simultaneously driving the medicine pump 302 and the air compressor 304, the medicine in the medicine tank 303 reaches the connecting pipe 301, and the compressed air in the air compressor 304 simultaneously reaches the connecting pipe 301. The compressed air and medicine are mixed and transported to the stirring rod 202 through the connecting pipe 301. When air needs to be transported separately, the medicine pump 302 can be turned off.

[0039] In addition, the pressure of the air delivered by the air compressor 304 and the medicine delivered by the medicine pump 302 are kept within a range that do not affect each other, preventing the medicine from flowing back into the air compressor 304. This is existing technology and will not be described in detail here.

[0040] In one embodiment, the elastic opening and closing mechanism 5 includes an impact plate 501, which is rotatably connected inside the stirring rod 202. One end of the impact plate 501 is slidably connected to a connecting rod 503, and one end of the connecting rod 503 is fixedly connected to a spring 502. One end of the spring 502 is fixedly connected inside the stirring rod 202, and the connecting rod 503 is slidably connected inside the stirring rod 202. A driving rod 504 is rotatably connected inside the connecting rod 503, and one end of the driving rod 504 is rotatably connected to an opening and closing rod 505. The opening and closing rod 505 is slidably connected inside the drug gas discharge hole 203, and a switch hole 506 is provided inside the opening and closing rod 505.

[0041] A pressurized air-powder mixture is delivered into the stirring rod 202. This mixture causes the impact plate 501 to oscillate within the stirring rod 202, which in turn causes one end of the connecting rod 503 to slide, moving the connecting rod 503 within the stirring rod 202. Simultaneously, the connecting rod 503 compresses the spring 502, causing one end of the drive rod 504 to oscillate. The other end of the drive rod 504 then causes the opening / closing rod 505 to slide within the gas discharge hole 203, allowing the gas to exit through the opening / closing hole 506. The discharge hole 203 allows the air and drug mixture to be discharged through the switch hole 506. When the air and drug mixture is not needed, the spring 502 drives the connecting rod 503 to reset, causing the connecting rod 503 to position the impact plate 501. Simultaneously, the connecting rod 503 causes the drive rod 504 to drive the opening and closing rod 505 to slide in the drug gas discharge hole 203, so that the switch hole 506 slides into the drug gas discharge hole 203, completing the closure of the drug gas discharge hole 203. This prevents the concrete mortar inside the machine body 1 from entering the drug gas discharge hole 203, thus improving its protective effect.

[0042] In one embodiment, the spiral discharge mechanism 4 includes a discharge pipe 401, which is fixedly connected to one side of the machine body 1. One end of the discharge pipe 401 is fixedly connected to one side of the machine body 1, and a second motor 402 is fixedly connected to one end of the discharge pipe 401. A discharge screen 403 is fixedly connected below the filter screen 204. The output shaft of the second motor 402 is fixedly connected to a spiral rod 404, and one of the spiral rods 404 is rotatably connected inside the discharge screen 403.

[0043] When the aggregate settles, it falls into the discharge screen 403. The motor 402 is started to drive the screw rod 404 to rotate, so that the screw rod 404 carries the aggregate on the surface of the discharge screen 403 to the discharge pipe 401. Then, the screw rod 404 in the discharge pipe 401 carries the aggregate out, thus completing the discharge of the aggregate.

[0044] In addition, there is a gap between the screw rod 404 inside the discharge pipe 401 and the inside of the discharge pipe 401 to prevent the screw rod 404 from sending out the mortar.

[0045] In one embodiment, the aforementioned debris separation mechanism 6 includes a water tank 601, which is fixedly connected to the back of the machine body 1. A drain hole 602 is provided on the back of the machine body 1, and a discharge pipe 603 is fixedly connected to the drain hole 602. The discharge pipe 603 is located above the water tank 601.

[0046] During the mixing process, bubbles rise to form foam, which carries impurities to float on the liquid surface. With the continuous input of concrete mortar, the liquid surface will move upward. When the liquid surface exceeds the drain hole 602, the impurities and foam will flow out through the drain hole 602 by the force of water flow, and the impurities and foam will reach the water tank 601 through the discharge pipe 603.

[0047] In one embodiment, the water circulation mechanism 7 includes a cleaning screen 701, which is fixedly connected inside the water tank 601. A circulation pipe 702 is fixedly connected to one side of the water tank 601. A water pump 703 is fixedly installed in the middle of the circulation pipe 702. The water outlet of the circulation pipe 702 is fixedly installed on the top of the machine body 1, and the water pump 703 is fixedly installed on the top of the machine body 1.

[0048] Impurities and scum in the water tank 601 are filtered by the impurity removal screen 701, leaving the impurities and scum on the surface of the screen 701. When the water reaches the bottom of the water tank 601, the water pump 703 is started, which transports the water to the machine body 1 through the circulation pipe 702, accelerating the rise of the liquid level inside the machine body 1 and also recovering water resources.

[0049] Through the above technical solution, 1. After the concrete mortar is conveyed into the machine body 1 through the feeding end, the motor 201 is started, causing the motor 201 to drive the mixing rod 202 to rotate, so that the mixing rod 202 mixes the concrete mortar. At the same time, the chemical pump 302 and the air compressor 304 are driven, so that the chemical in the chemical tank 303 reaches the connecting pipe 301. Simultaneously, the compressed air in the air compressor 304 reaches the connecting pipe 301. The compressed air and the chemical are mixed and conveyed into the mixing rod 202 through the connecting pipe 301. The air and chemical mixture drives the impact plate 501 to swing inside the mixing rod 202, so that the impact plate 501 drives the connecting rod 202 to rotate. One end of the connecting rod 503 slides, causing the connecting rod 503 to move inside the stirring rod 202. At the same time, the connecting rod 503 compresses the spring 502, causing the connecting rod 503 to drive one end of the driving rod 504 to swing. Meanwhile, the other end of the driving rod 504 drives the opening and closing rod 505 to slide inside the chemical gas discharge hole 203, causing the switching hole 506 to slide out of the chemical gas discharge hole 203. This allows the air and reagent mixture to be discharged through the switching hole 506, enabling the reagent and microbubbles to be directionally sprayed into the concrete mortar. This achieves efficient interface contact between the reagent, the bubble, and the aggregate. At the same time, the stirring shear force further enhances the three-phase mixing, significantly improving the flotation separation rate of hydrophobic impurities.

[0050] 2. When the air and chemical mixture is not needed, the spring 502 drives the connecting rod 503 to reset, so that the connecting rod 503 drives the impact plate 501 to be positioned. Simultaneously, the connecting rod 503 drives the drive rod 504 to drive the opening and closing rod 505 to slide in the chemical gas discharge hole 203, so that the switch hole 506 slides into the chemical gas discharge hole 203, completing the closure of the chemical gas discharge hole 203. This closure process can effectively block the reverse penetration of concrete mortar in the machine body 1.

[0051] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0052] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high-efficiency floating separation device for concrete aggregate, comprising a machine body (1), characterized in that, The machine body (1) is equipped with a stirring mechanism (2) inside. A gas-liquid conveying mechanism (3) is provided at one end of the stirring mechanism (2). Several elastic opening and closing mechanisms (5) are provided inside the stirring mechanism (2). A spiral discharge mechanism (4) is provided below the stirring mechanism (2). A debris separation mechanism (6) is provided on one side of the machine body (1). A water circulation mechanism (7) is provided at the discharge end of the debris separation mechanism (6). The mixing mechanism (2) is used to mix concrete mortar. At the same time, the gas-liquid conveying mechanism (3) conveys the agent and air to the mixing end of the mixing mechanism (2) to increase the pressure inside the mixing end. Meanwhile, the transport ends of several elastic opening and closing mechanisms (5) move out from the inside of the mixing end under the pressure, so that the agent and air flow out from the inside of the mixing end through the transport ends.

2. A high efficiency floatation sorting device for concrete aggregates as claimed in claim 1 wherein, The stirring mechanism (2) includes a motor (201), which is fixedly installed on one side of the machine body (1). The output shaft of the motor (201) is fixedly connected to a stirring rod (202), which is rotatably connected inside the machine body (1). The surface of the stirring rod (202) is provided with several medicinal gas discharge holes (203). A filter screen (204) is fixedly connected inside the machine body (1).

3. A high efficiency floatation sorting device for concrete aggregates as claimed in claim 2 wherein, The gas-liquid conveying mechanism (3) includes a connecting pipe (301), which is rotatably connected to one end of the stirring rod (202). The other end of the connecting pipe (301) is fixedly connected to a medicine pump (302). The feed end of the medicine pump (302) is fixedly connected to a medicine tank (303). The medicine pump (302) and the medicine tank are both fixedly installed on one side of the machine body (1). An air compressor (304) is also fixedly installed on one side of the machine body (1). The air output end of the air compressor (304) is connected to the connecting pipe (301).

4. A high efficiency floatation sorting device for concrete aggregates as claimed in claim 2 wherein, The elastic opening and closing mechanism (5) includes an impact plate (501), which is rotatably connected inside the stirring rod (202). One end of the impact plate (501) is slidably connected to a connecting rod (503), and one end of the connecting rod (503) is fixedly connected to a spring (502). One end of the spring (502) is fixedly connected inside the stirring rod (202), and the connecting rod (503) is slidably connected inside the stirring rod (202). A driving rod (504) is rotatably connected inside the connecting rod (503), and one end of the driving rod (504) is rotatably connected to an opening and closing rod (505). The opening and closing rod (505) is slidably connected inside the drug gas discharge hole (203), and a switch hole (506) is provided inside the opening and closing rod (505).

5. The apparatus of claim 2, wherein, The spiral discharge mechanism (4) includes a discharge pipe (401), which is fixedly connected to one side of the machine body (1). One end of the discharge pipe (401) is fixedly connected to one side of the machine body (1) with a motor (402). A discharge screen (403) is fixedly connected below the filter screen (204). The output shaft of the motor (402) is fixedly connected to a spiral rod (404), and one of the spiral rods (404) is rotatably connected inside the discharge screen (403).

6. The apparatus of claim 1, wherein, The debris separation mechanism (6) includes a water tank (601), which is fixedly connected to the back of the machine body (1). A drain hole (602) is provided on the back of the machine body (1), and a discharge pipe (603) is fixedly connected to the drain hole (602). The discharge pipe (603) is located above the water tank (601).

7. A high efficiency floatation sorting device for concrete aggregates as claimed in claim 6 wherein, The water circulation mechanism (7) includes a cleaning screen (701), which is fixedly connected inside the water tank (601). A circulation pipe (702) is fixedly connected to one side of the water tank (601). A water pump (703) is fixedly installed in the middle of the circulation pipe (702). The water outlet of the circulation pipe (702) is fixedly installed on the top of the machine body (1). The water pump (703) is fixedly installed on the top of the machine body (1).

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