Waste plastic bottle flotation separation device

Abstract

The utility model provides a waste plastic bottle flotation separation device which comprises a flotation tank, an inclined tank, a conveying tank and a water return tank which are sequentially communicated from top to bottom, a slag inlet and a floating material outlet are formed in the two sides of the flotation tank, and a discharging motor is arranged on the side wall, close to the floating material outlet, of the flotation tank; the middle section of the conveying groove is provided with a material gathering bin, the conveying direction of the conveying groove is that water gathers from the two sides to the interior, the lower portion of the material gathering bin is provided with a sinking material outlet, the water return groove is arranged below the sinking material outlet, and the water return groove is used for discharging water back to the flotation groove. According to the device, by changing the discharging mode of the conveying groove body and the discharging mode of the floating water layer, the problem that sheet materials at the discharging end of plastic fragment flotation are accumulated and cannot be discharged can be effectively solved, meanwhile, dynamic reduction of flowing water is reduced, backwater dynamic balance of the total water amount is achieved, and use of water energy can be reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of waste plastic flotation equipment, specifically a waste plastic bottle flotation separation device. Background Technology

[0002] In the recycling process of plastic bottles, it is necessary to separate the hard plastics from the lightweight plastics in the crushed material. Some waste recycling lines use manual methods to separate the crushed bottle caps from the lightweight bottle body pieces. This method has poor separation efficiency and is not effective. Large-scale plastic separation uses flotation to separate the hard plastics. A plastic flotation machine is a device specifically designed for the recycling of waste plastics. Its function is to classify mixed waste plastics and separate the different types. It uses the different buoyancy of different types of plastics in the liquid for separation. In the flotation machine, plastics with lower density will float on the surface of the liquid (such as plastic pieces from the bottle body), while plastics with higher density (such as hard bottle caps) will sink to the bottom. The flotation process is achieved through the floating and sinking effect. However, often the flowing water is used to carry the scum and sediment out of the plastic while the water is flowing. This process consumes a lot of water resources. At the same time, due to the material guidance on one side, the material is easy to accumulate at the discharge port. The crushed pieces have a certain degree of stickiness and are not easy to discharge, thus causing accumulation.

[0003] To achieve the above objectives, this utility model provides a flotation separation device for waste plastic bottles, which can solve the problems mentioned in the background art. Utility Model Content

[0004] This utility model adopts the following technical solution:

[0005] A flotation separation device for waste plastic bottles includes a flotation tank, an inclined trough, a conveying trough, and a return water trough connected in sequence from top to bottom. The flotation tank has a slag inlet and a floating material outlet on both sides. A discharge motor is provided on the side wall of the flotation tank near the floating material outlet.

[0006] The middle section of the conveying trough is provided with a material gathering chamber. The conveying direction of the conveying trough is from both sides to the inside. The lower part of the material gathering chamber is provided with a sedimentation outlet. The return water trough is located below the sedimentation outlet and is used to drain water back to the flotation cell.

[0007] Preferably, the conveying trough is equipped with a sinking motor, one end of which is equipped with a bidirectional conveying roller. The two sides of the material gathering chamber are equipped with feeding circular grooves. The area of ​​the feeding circular grooves is the same as the rotation stroke of the bidirectional conveying roller. The rotation axis of the bidirectional conveying roller passes through the two feeding circular grooves. The bidirectional conveying rollers located on both sides of the material gathering chamber rotate in the same direction but have opposite spiral distribution directions.

[0008] Preferably, the upper and lower sides of the material collection chamber are respectively provided with a top water inlet and a bottom water outlet, and the interior of the top water inlet and the bottom water outlet are provided with sealing rotating plates, and the two sealing rotating plates close synchronously.

[0009] Preferably, the return water tank is equipped with a conveyor belt located below the aggregate chamber, the conveyor belt is a hydrophobic plate, and one side of the conveyor belt is located inside the return water tank.

[0010] Preferably, a float roller is provided on the side wall of the flotation cell near the slag inlet, and the drainage direction of the float roller is from the slag inlet to the float outlet.

[0011] Preferably, a return water pump is connected to one side of the return water tank, and a return water pipe is provided on one side of the return water pump. The outlet end of the return water pipe is connected to the slag inlet.

[0012] Preferably, the output end of the discharge motor is connected to a discharge plate roller, the discharge plate roller is fixed on the inner wall of the flotation tank near the flotation outlet, and multiple discharge plates are provided around the discharge plate roller.

[0013] Preferably, a floating layer arc groove is provided on the inside of the flotation cell near the floating material outlet, the arc surface of the floating layer arc groove is in contact with the rotation stroke of the discharge plate roller, and the lateral top of the floating layer arc groove is connected to the floating material outlet; a lateral conveying roller group is provided on the outer side of the floating material outlet, and the feeding side of the lateral conveying roller group is connected to the floating material outlet.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention uses flotation to separate crushed plastic bottle residue into layers of different densities. The upper layer utilizes float rollers and discharge rollers to remove floating material, reducing the problem of material accumulation at the discharge port. The lower layer, through the aggregation and settling effect of the conveying trough and the conveying effect on both sides, collects the sediment in the aggregation chamber. By opening the aggregation chamber intermittently, the sediment is discharged, and water pressure is used to flush it out, effectively reducing water consumption. Furthermore, the use of a water return device further conserves water resources. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall internal structure of this utility model;

[0017] Figure 2 This is a side view of the structure of this utility model.

[0018] In the diagram: 1. Flotation cell; 2. Inclined trough; 3. Conveying trough; 4. Return water trough; 5. Conveyor belt;

[0019] 101. Floating roller; 102. Floating layer arc groove; 103. Discharge motor; 104. Lateral conveying roller assembly; 105. Discharge plate roller;

[0020] 301. Bidirectional conveyor roller; 302. Sinking motor; 303. Gathering chamber; 304. Top water inlet; 305. Bottom water outlet; 306. Sealing turntable;

[0021] 401. Return water pump; 402. Return water pipe. Detailed Implementation

[0022] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] The present invention will be further described in detail below with reference to the accompanying drawings.

[0026] Please refer to the attached document carefully. Figure 1 , Figure 2 It includes a flotation cell 1, an inclined trough 2, a conveying trough 3, and a return water trough 4 connected vertically. The flotation cell 1 has a slag inlet and a floating material outlet on both sides. A discharge motor 103 is provided on the side wall of the flotation cell 1 near the floating material outlet.

[0027] The middle section of the conveying trough 3 is provided with a material gathering chamber 303. The conveying direction of the conveying trough 3 is from both sides to the inside. The lower part of the material gathering chamber 303 is provided with a sedimentation outlet. The return water trough 4 is located below the sedimentation outlet. The return water trough 4 is used to drain water back to the flotation tank 1.

[0028] The conveying trough 3 is equipped with a sinking motor 302. One end of the sinking motor 302 is equipped with a bidirectional conveying roller 301. The two sides of the material gathering chamber 303 are equipped with feeding circular grooves. The area of ​​the feeding circular grooves is the same as the rotation stroke of the bidirectional conveying roller 301. The rotation axis of the bidirectional conveying roller 301 passes through the two feeding circular grooves. The bidirectional conveying rollers 301 located on both sides of the material gathering chamber 303 have the same rotation direction and opposite spiral distribution direction.

[0029] The material collection chamber 303 is provided with a top water inlet 304 and a bottom water outlet 305 on its upper and lower sides, respectively. Both the top water inlet 304 and the bottom water outlet 305 are provided with sealing rotating plates 306 inside, and the two sealing rotating plates 306 close simultaneously.

[0030] The return water tank 4 is equipped with a conveyor belt 5, which is located below the aggregate chamber 303. The conveyor belt is a water-repellent plate, and one side of the conveyor belt 5 is located inside the return water tank 4.

[0031] The discharge method of the bottom sediment in this utility model is as follows: Figure 1 The mixed material enters from the slag inlet on one side. Some of the higher-density bottle cap plastic fragments automatically settle into the inclined chute 2, while another portion of the higher-density flakes float on the water surface. By rotating the float roller 101, the floating mixed material on the upper layer is pressed down and guided into the water for complete immersion. After immersion, the higher-density flakes sink into the inclined chute 2. At the same time, the rotation of the float roller 101 can guide the surface water flow laterally. A sufficient amount of high-density bottle cap plastic fragments gradually enter the conveying trough 3 and are conveyed by the bidirectional conveying roller 301 to the accumulation chamber 303 for accumulation. The side wall of the accumulation chamber 303 can... The device has holes for pressure relief. At timed intervals, the sealing plate 306 is opened simultaneously to open the bottom outlet 305 and the top inlet 304. At this time, the water pressure from the upper layer will rush downward from the top inlet 304. Then, the water flow will flush the slag inside the material chamber 303 to the conveyor belt 5 inside the return water tank 4. At the same time, the sealing plate 306 is closed, and the sludge on the conveyor belt 5 is carried away. The water source of the water pump in the return water tank 4 is brought back to the lost water source through the return water pump 401. When the water level changes, a water level monitoring device and an external water supply pipe can be set up to supplement the water level in a small amount.

[0032] Please refer to this carefully. Figure 1 The flotation cell 1 is provided with a float roller 101 on the side wall near the slag inlet, and the drainage direction of the float roller 101 is from the slag inlet to the float outlet;

[0033] A return water pump 401 is connected to one side of the return water tank 4, and a return water pipe 402 is provided on one side of the return water pump 401. The water outlet end of the return water pipe 402 is connected to the slag inlet.

[0034] Please refer to this carefully. Figure 1 , Figure 2 The output end of the discharge motor 103 is connected to a discharge plate roller 105. The discharge plate roller 105 is fixed on the inner wall of the flotation tank 1 near the flotation outlet. Multiple discharge plates are provided around the discharge plate roller 105. A floating layer arc groove 102 is provided on the inner side of the flotation tank 1 near the flotation outlet. The arc surface of the floating layer arc groove 102 is in contact with the rotation stroke of the discharge plate roller 105. The lateral top of the floating layer arc groove 102 is connected to the flotation outlet. A lateral conveying roller group 104 is provided on the outer side of the flotation outlet. The feeding side of the lateral conveying roller group 104 is connected to the flotation outlet.

[0035] The discharge method of the suspended sediment in this utility model is as follows:

[0036] like Figure 1 After the mixture enters the flotation tank 1, the floating material follows the flow of water through the rotation of the float roller 101, and rotates to the water surface for washing. Due to the low density of the lightweight floating material, it floats back to the surface. Then, guided by the sliding action of the float roller 101, it moves towards the discharge motor 103. Multiple float rollers 101 can be arranged in an array. The upper layer of the floating layer arc groove 102 of the discharge motor 103 is lower than the water surface, while the top of the floating layer arc groove 102 is higher than the water surface (e.g., ...). Figure 1 Furthermore, the feed tangent side has an extended screen plate, which can ensure that the floating material moves in sheets to the rotation stroke position of the discharge plate roller 105, thereby stacking on the floating layer arc groove 102. Under the rotation of the discharge plate roller 105, it moves towards the opening of the side conveying roller group 104, and the floating material can be quickly discharged laterally to the side conveying roller group 104 with less water loss.

[0037] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A waste plastic bottle floatation separation device, characterized in that: Including the floatation tank (1) that communicates in turn from top to bottom, chute (2), conveying tank (3), backwater tank (4), the floatation tank (1) both sides are equipped with residue inlet and float material outlet, the side wall of the floatation tank (1) is equipped with discharge motor (103) near float material outlet side, The middle section of the conveying tank (3) is provided with a material gathering cabin (303), the conveying direction of the conveying tank (3) is gathered from both sides to the inside, the lower part of the material gathering cabin (303) is provided with a sinking material outlet, the backwater tank (4) is arranged below the sinking material outlet, and the backwater tank (4) is used for discharging water back to the floatation tank (1).

2. A device for floatation separation of waste plastic bottles according to claim 1, characterized in that: The conveying tank (3) is internally provided with a sinking material motor (302), one end of the sinking material motor (302) is provided with a bidirectional conveying roller (301), both sides of the material gathering cabin (303) are provided with an inlet circular groove, the area of the inlet circular groove is the same as the rotating stroke of the bidirectional conveying roller (301), the rotating central axis of the bidirectional conveying roller (301) penetrates through the two inlet circular grooves, and the rotating directions of the bidirectional conveying rollers (301) on both sides of the material gathering cabin (303) are the same, and the spiral distribution directions are opposite.

3. A device for floatation separation of waste plastic bottles according to claim 2, characterized in that: The upper and lower sides of the material gathering cabin (303) are respectively provided with a top water inlet (304) and a bottom water outlet (305), the inside of the top water inlet (304) and the bottom water outlet (305) is respectively provided with a sealing rotating plate (306), and the two sealing rotating plates (306) are synchronously closed.

4. A device for floatation separation of waste plastic bottles as claimed in claim 1 wherein: The inside of the backwater tank (4) is provided with a conveying belt (5), the conveying belt (5) is arranged below the material gathering cabin (303), the conveying belt is a hydrophobic plate, and one side of the conveying belt (5) is arranged in the backwater tank (4).

5. A device for floatation separation of waste plastic bottles as claimed in claim 1 wherein: The floatation tank (1) is provided with a floating plate roller (101) on the side wall near the residue inlet, and the water discharge direction of the floating plate roller (101) is from the residue inlet to the float material outlet.

6. A waste plastic bottle floatation separation device as claimed in claim 5, wherein: One side of the backwater tank (4) is communicated with a backwater pump (401), one side of the backwater pump (401) is provided with a backwater pipe (402), and the water outlet end of the backwater pipe (402) is connected to the residue inlet.

7. A device for floatation separation of waste plastic bottles as claimed in claim 1 wherein: The output end of the discharge motor (103) is connected with a discharge plate roller (105), the discharge plate roller (105) is fixed on the inner wall of the floatation tank (1) near the float material outlet, and a plurality of discharge plates are arranged on the side of the discharge plate roller (105).

8. A waste plastic bottle floatation separation device as claimed in claim 7, wherein: The inside of the floatation tank (1) is provided with a floating layer arc groove (102) near the float material outlet, the arc surface of the floating layer arc groove (102) is matched with the rotating stroke of the discharge plate roller (105), and the side top of the floating layer arc groove (102) is communicated with the float material outlet. The outside of the float material outlet is provided with a side material conveying roller group (104), and the feeding side of the side material conveying roller group (104) is communicated with the float material outlet.

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