Construction waste flotation equipment

Abstract

The utility model discloses construction waste flotation equipment which comprises a water tank, a cleaning assembly is arranged in the water tank, a discharging device is arranged below the cleaning assembly, the discharging device is located in the water tank, one end of the cleaning assembly is provided with a slag salvaging device, the slag salvaging device is located in the water tank, and the other end of the cleaning assembly is provided with a slag salvaging device. A flow guide plate is arranged at the other end of the cleaning assembly and located in the water tank. And the cleaning assembly comprises a cleaning tank, a stirring assembly is arranged in the cleaning tank and located above the discharging device, a plurality of water injection openings are formed in the cleaning tank, a high-pressure water source is introduced into the water injection openings, and the water injection openings are located below the flow guide plate. The technical problem that in the prior art, light materials can be attached to aggregate and are difficult to separate from the aggregate is solved.

Description

Technical Field

[0001] This utility model relates to the field of construction sand and gravel cleaning technology, and in particular to a flotation device for construction waste. Background Technology

[0002] Aggregate is a granular material that acts as a skeleton and filler in concrete and mortar. Existing aggregate sources are divided into natural aggregate and environmentally friendly aggregate. Environmentally friendly aggregate comes from screening construction waste. However, construction waste contains impurities such as weeds and plastic waste in addition to usable aggregate, thus requiring sorting. Existing technology, such as Chinese Patent Publication No. CN211964561U, discloses a construction waste flotation device, including a slag remover, a scraper, and a washing chamber. The washing chamber stores a washing liquid, which is used to wash the construction waste placed in the washing chamber. The slag remover is adapted to transport floating matter on the surface of the washing liquid to the scraper. The scraper is adapted to transport the floating matter to an end away from the surface of the washing liquid.

[0003] However, in existing technologies, when construction waste is fed in, lightweight materials such as plastic waste will be mixed in between the aggregates and sink to the bottom of the equipment, making it difficult to separate by flotation. Some lightweight materials, such as plastic waste, will form a water film on their surface due to the surface tension of the water after getting wet. This water film gives the lightweight materials a certain suction force, so the lightweight materials will be tightly adsorbed onto the aggregates and thus cover the aggregates. In this case, even if a stirring rod is used, it is difficult to achieve a separation effect. Utility Model Content

[0004] The purpose of this invention is to solve the technical problem in the prior art that lightweight materials adhere to the aggregates and are difficult to separate from the aggregates, and to propose a flotation device for construction waste.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A flotation device for construction waste includes a water tank, inside which a washing assembly is provided. Below the washing assembly is a discharge device located inside the water tank. One end of the washing assembly has a slag-removing device located inside the water tank, and the other end has a guide plate located inside the water tank. The washing assembly includes a washing tank, inside which a stirring assembly is provided above the discharge device. The washing tank has several water inlets for introducing high-pressure water, located below the guide plate.

[0007] Preferably, the stirring assembly includes a stirring rod located inside the cleaning tank. One end of the stirring rod is rotatably connected to the interior of the cleaning tank, and the other end of the stirring rod is provided with a transmission group and a first motor. The output end of the first motor is connected to the input end of the transmission group. The first motor is located on the outer wall of the tank and is electrically connected to an external power source.

[0008] Preferably, the slag removal device includes a first conveyor belt, one end of which is inserted obliquely into the water tank, and the other end of which extends outward from the water tank. The first conveyor belt has several slag-removing plates, and a baffle is located above it. An air nozzle is located inside the baffle and connected to an external high-pressure air source. The air nozzle is used to blow air onto the surface of the first conveyor belt. At least two rotating wheels are located inside the first conveyor belt, and each rotating wheel has a rotating shaft connected to the baffle. At least one of the rotating wheels is a drive wheel connected to the rotating shaft. A second motor is located on one side of the drive wheel and connected to its output shaft. The second motor is located on the outer wall of the water tank and is electrically connected to an external power source. A placement cavity is located on one side of the discharge device, and the opening of the placement cavity is located inside the water tank.

[0009] Preferably, the guide plate is used to guide external water sources into the interior of the water tank.

[0010] Preferably, the discharge device includes a second conveyor belt and a third conveyor belt. The second conveyor belt is located below the stirring assembly. The output end of the second conveyor belt is connected to the input end of the third conveyor belt. The second and third conveyor belts are each provided with a plurality of scrapers. The second and third conveyor belts are provided with a plurality of rotating rollers inside. Each rotating roller is provided with a roller shaft, which is connected to the inner wall of the water tank. At least one of the rotating rollers is an active roller. A third motor is provided on one side of the active roller. The active roller is connected to the output shaft of the third motor. The third motor is located on the outer wall of the water tank and is electrically connected to an external power source.

[0011] Preferably, the second conveyor belt is horizontally arranged inside the water tank, and the second conveyor belt and the third conveyor belt are arranged at an obtuse angle, with the output end of the third conveyor belt extending outward from the water tank.

[0012] The beneficial effects proposed by this utility model are as follows:

[0013] In this invention, the water tank is equipped with a cleaning assembly inside, and a discharge device is located below the cleaning assembly. The discharge device is located inside the water tank. One end of the cleaning assembly is equipped with a slag-removing device, which is located inside the water tank. The slag-removing device can remove lightweight waste floating on the water surface from the water tank. The other end of the cleaning assembly is equipped with a guide plate, which is located inside the water tank. The guide plate is used to introduce external water into the water tank and simultaneously create thrust on the water surface to push the lightweight waste floating on the water surface toward the slag-removing device. The cleaning assembly includes a cleaning tank, and a stirring assembly is installed inside the cleaning tank. The stirring assembly is located above the discharge device. After the aggregate is processed by the stirring assembly, it is collected through the discharge device. The cleaning tank is equipped with several water inlets for introducing high-pressure water, and the water inlets are located below the guide plate. During the cleaning process of construction waste, the device uses a stirring device to initially stir and separate the construction waste mixed with impurities. High-pressure water is output through the water inlet. Under the impact of the high-pressure water, a scouring water flow is created in the stirring area. When the aggregate wrapped with lightweight waste is turned over by the stirring component to the scouring water flow, the scouring water flow further washes and cleans the aggregate, washing away the lightweight material wrapped on the aggregate and making it float on the water surface, thus improving the separation effect of construction waste. Attached Figure Description

[0014] Figure 1 This is a perspective view of a flotation device for construction waste proposed in this utility model;

[0015] Figure 2 This is a side sectional view of a flotation device for construction waste proposed in this utility model;

[0016] Figure 3 This is a schematic diagram of the transmission assembly of a construction waste flotation device proposed in this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the second and third conveyor belts of a construction waste flotation device proposed in this utility model.

[0018] In the diagram: 1. Water tank; 2. Washing tank; 3. Water inlet; 4. Guide plate; 5. Stirring rod; 6. First conveyor belt; 7. Scoop plate; 8. Baffle; 9. Air nozzle; 10. Rotating wheel; 11. Drive wheel; 12. Second conveyor belt; 13. Third conveyor belt; 14. Rotating shaft; 15. Transmission assembly; 16. First motor; 17. Second motor; 18. Third motor; 19. Synchronous pulley; 20. Synchronous belt; 21. Scraper; 22. Rotating roller; 23. Roller; 24. Drive roller; 25. Placement chamber. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figures 1 to 4 A flotation device for construction waste includes a water tank 1, a cleaning component inside the water tank 1, a discharge device below the cleaning component, the discharge device being located inside the water tank 1, a slag removal device at one end of the cleaning component, the slag removal device being located inside the water tank 1, and a guide plate 4 at the other end of the cleaning component, the guide plate 4 being located inside the water tank 1; the cleaning component includes a cleaning tank 2, a stirring component inside the cleaning tank 2, the stirring component being located above the discharge device, and a plurality of water inlets 3 for introducing high-pressure water sources inside the cleaning tank 2, the water inlets 3 being located below the guide plate 4. Specifically, the water tank 1 is filled with cleaning water before operation. During operation, construction waste is placed into the cleaning tank 2. After being collected by the cleaning tank 2, the construction waste falls into the discharge device. The bottom of the cleaning tank 2 is funnel-shaped as shown in the figure. Then, the stirring component is started, and the discharge device is stopped. The stirring device can stir the construction waste placed in the discharge device, stirring and breaking up the accumulated construction waste, so that the lightweight waste in the construction waste floats on the water surface, while the heavier aggregate sinks back into the discharge device after stirring. During the operation of the stirring device, the water inlet 3 outputs high-pressure water. Under the impact of the high-pressure water, a flushing water flow is created in the stirring area. When the aggregate wrapped with lightweight waste is turned over by the stirring component to the flushing water flow, the flushing water flow further washes and cleans the aggregate, separating the lightweight material wrapped on the aggregate and making it float on the water surface, thus improving the separation effect of construction waste.

[0021] Specifically, the mixing assembly includes a mixing rod 5 located inside the cleaning tank 2. One end of the mixing rod 5 is rotatably connected to the interior of the cleaning tank 2, and the other end of the mixing rod 5 is equipped with a transmission assembly 15 and a first motor 16. The output end of the first motor 16 is connected to the input end of the transmission assembly 15. The first motor 16 is located on the outer wall of the water tank 1 and is electrically connected to an external power source. During operation, the first motor 16 starts, driving the mixing rod 5 to rotate through the transmission assembly 15. The transmission assembly 15 consists of a pair of synchronous pulleys 19 and a synchronous belt 20. The synchronous pulleys 19 are respectively fixedly installed on the input end of the mixing rod 5 and the output shaft of the first motor 16. The mixing rod 5 is a mixing rod with a spiral feed mechanism. When the mixing rod 5 is stirring and turning over the construction waste, it can also push the raw materials towards one side of the water inlet 3, allowing more aggregate in the construction waste to be washed by the water inlet 3, thus improving the cleaning effect of the aggregate.

[0022] Specifically, the slag removal device includes a first conveyor belt 6, one end of which is inserted obliquely into the water tank 1, and the other end of which extends outward from the water tank 1. The first conveyor belt 6 is equipped with several slag-removing plates 7. A baffle 8 is located above the first conveyor belt 6, and an air nozzle 9 is located inside the baffle 8. The air nozzle 9 is connected to an external high-pressure air source and is used to blow air onto the surface of the first conveyor belt 6. At least two rotating wheels 10 are located inside the first conveyor belt 6, and a rotating shaft 14 is located inside each rotating wheel 10. The rotating shaft 14 is connected to the baffle 8. At least one drive wheel 11 is located among the rotating wheels 10 and is connected to the rotating shaft 14. A second motor 17 is located on one side of the drive wheel 11 and is connected to the output shaft of the second motor 17. The second motor 17 is located on the outer wall of the water tank 1 and is electrically connected to an external power source. When the lightweight material floats on the water surface, the second motor 17 starts, driving the drive wheel 11 to rotate synchronously. The drive wheel 11 then starts the first conveyor belt 6. It should be noted that, due to the arrangement of the second motor 17, the second motor 17 and the drive wheel 11 can be connected through the transmission group 15. At this time, the first conveyor belt 6 rotates counterclockwise. The scooping plate 7 located on the first conveyor belt 6 scoops up the lightweight material floating on the water surface. As the first conveyor belt 6 rotates, the lightweight material is carried out of the water tank 1. At the same time, because the lightweight material is wet, the surface tension of the water will adhere to the first conveyor belt 6 or hang on the scooping plate 7. Therefore, when the first conveyor belt 6 rotates, the air nozzle 9 outputs high-pressure air to dry the water stains on the lightweight material, allowing the lightweight material to detach from the first conveyor belt 6 and the scooping plate 7. In order to prevent the lightweight material from being affected by the airflow, the baffle 8 can prevent this phenomenon from occurring and can also restrict the airflow to the first conveyor belt 6, improving the drying effect and the detachment effect of the lightweight material.

[0023] Specifically, the guide plate 4 is used to guide external water into the interior of the water tank 1. The guide plate 4 is inclined to the water surface. When external water is introduced, the water will create an impact force on the water surface when it is injected into the water tank 1 due to the height difference. This impact force will push the lightweight material towards the slag removal device, thereby improving the slag removal efficiency of the device.

[0024] Specifically, the discharge device includes a second conveyor belt 12 and a third conveyor belt 13. The second conveyor belt 12 is located below the stirring assembly. The output end of the second conveyor belt 12 is connected to the input end of the third conveyor belt 13. The second conveyor belt 12 and the third conveyor belt 13 are respectively provided with a plurality of scrapers 21. The second conveyor belt 12 and the third conveyor belt 13 are provided with a plurality of rotating rollers 22. The rotating rollers 22 are provided with rollers 23. The rollers 23 are connected to the inner wall of the water tank 1. At least one of the rotating rollers 22 is an active roller 24. A third motor 18 is provided on one side of the active roller 24. The active roller 24 is connected to the output shaft of the third motor 18. The third motor 18 is located on the outer wall of the water tank 1 and is electrically connected to an external power supply. A placement cavity 25 is provided on one side of the discharge device. The opening direction of the placement cavity 25 is located inside the water tank 1. After the aggregate has completed the washing and separation process, the mixing assembly stops, and the second conveyor belt 12 and the third conveyor belt 13 rotate synchronously. The aggregate is first driven by the scraper 21 on the second conveyor belt 12 and then enters the third conveyor belt 13, from inside the water tank 1 through the third conveyor belt 13. It should be noted that during the linkage process of the second conveyor belt 12 and the third conveyor belt 13, in order to achieve synchronous rotation, the second conveyor belt 12 and the third conveyor belt 13 share the third motor 18 for driving. When the third motor 18 starts, the drive roller 24 rotates in conjunction, thereby driving the third conveyor belt 13 to rotate. Therefore, the second conveyor belt 12 and the third conveyor belt can be connected through the transmission group 15, which is located inside the placement cavity 25. The placement cavity 25 provides a certain space for the installation of the transmission group 15, and the third conveyor belt 13 drives the second conveyor belt 12 to rotate.

[0025] Specifically, the second conveyor belt 12 is horizontally arranged inside the water tank 1, and the second conveyor belt 12 and the third conveyor belt 13 are arranged at an obtuse angle. The output end of the third conveyor belt 13 extends outward from the water tank 1. When the second conveyor belt 12 and the third conveyor belt 13 are arranged at an obtuse angle, in order to avoid mutual interference and impact between the scrapers 21 during operation, the input end of the third conveyor belt 13 is placed at the bottom of the output end of the second conveyor belt 12.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A flotation device for construction waste, comprising a water tank, characterized in that: The water tank is equipped with a cleaning assembly inside, and a discharge device is located below the cleaning assembly inside the water tank. One end of the cleaning assembly is equipped with a slag removal device inside the water tank, and the other end of the cleaning assembly is equipped with a guide plate inside the water tank. The cleaning assembly includes a cleaning tank, and a stirring assembly is located inside the cleaning tank above the discharge device. The cleaning tank has several water inlets for introducing high-pressure water, and the water inlets are located below the guide plate.

2. A construction waste flotation apparatus as claimed in claim 1, characterized in that: The stirring assembly includes a stirring rod located inside the cleaning tank. One end of the stirring rod is rotatably connected to the interior of the cleaning tank, and the other end of the stirring rod is provided with a transmission group and a first motor. The output end of the first motor is connected to the input end of the transmission group. The first motor is located on the outer wall of the tank and is electrically connected to an external power source.

3. A construction waste flotation apparatus as claimed in claim 1, characterized in that: The slag removal device includes a first conveyor belt, one end of which is inserted obliquely into the water tank, and the other end of which extends outward from the water tank. The first conveyor belt has several slag-removing plates, and a baffle is located above it. An air nozzle is located inside the baffle and is connected to an external high-pressure air source. The air nozzle is used to blow air onto the surface of the first conveyor belt. At least two rotating wheels are located inside the first conveyor belt, and each rotating wheel has a rotating shaft connected to the baffle. At least one of the rotating wheels is a drive wheel connected to the rotating shaft. A second motor is located on one side of the drive wheel and is connected to the output shaft of the second motor. The second motor is located on the outer wall of the water tank and is electrically connected to an external power source.

4. A construction waste flotation apparatus as claimed in claim 1, characterized in that: The guide plate is used to guide external water sources into the interior of the water tank.

5. A construction waste flotation apparatus as claimed in claim 1, characterized in that: The discharge device includes a second conveyor belt and a third conveyor belt. The second conveyor belt is located below the stirring assembly. The output end of the second conveyor belt is connected to the input end of the third conveyor belt. The second and third conveyor belts are each equipped with a plurality of scrapers. The second and third conveyor belts are equipped with a plurality of rotating rollers inside. Each rotating roller is equipped with a roller shaft, which is connected to the inner wall of the water tank. At least one of the rotating rollers is an active roller. A third motor is provided on one side of the active roller. The active roller is connected to the output shaft of the third motor. The third motor is located on the outer wall of the water tank and is electrically connected to an external power supply. A placement cavity is provided on one side of the discharge device. The opening of the placement cavity is located inside the water tank.

6. A construction waste flotation apparatus as claimed in claim 5, characterised in that: The second conveyor belt is arranged horizontally inside the water tank, and the second conveyor belt and the third conveyor belt are arranged at an obtuse angle. The output end of the third conveyor belt extends outward from the water tank.

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