Reprocessed plastic surface treatment device

Abstract

The utility model discloses a regenerated plastic surface treatment device. A composite treatment system combining a dynamic flotation separation system based on liquid level control and a reinforced turbulence cleaning mechanism is constructed. When recycled plastic particles containing impurities and water flow are injected into the transverse separation tank through a feeding opening, the system regulates and controls the water level in the tank through an accurate liquid level sensor, so that plastic with low density floats to the liquid level, and heavy impurities such as metal scraps with high density settle. The double-helix structure of the separation paddle forms the double functions of axial flow pushing and radial shearing in the rotating process, and plastic particles are pushed to move towards a middle material outlet. The separation and cleaning processes are physically isolated through the orthogonally arranged separation tank and cleaning tank structure, the flotation separation efficiency is improved through accurate liquid level control, the plastic surface reaches higher cleanliness and the cleaning effect is improved through turbulent flow cleaning, the whole device is compact in layout and small in occupied area, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to intelligent manufacturing equipment technical field, especially relate to a regenerated plastic surface treatment device. BACKGROUND

[0002] With the enhancement of environmental protection consciousness and the increasing demand of resource recycling, the treatment and recycling of regenerated plastics become an important research direction. In the recycling process of regenerated plastics, effective surface treatment is needed to remove impurities, oil stains and other impurities on the surface, improve its purity and quality, and meet the requirements of subsequent processing and use.

[0003] Currently, the surface treatment of regenerated plastics usually includes cleaning and separation steps. In the traditional treatment process, these steps often need to be carried out in different equipment, resulting in a cumbersome and inefficient overall treatment process, and increasing equipment cost and floor area. In addition, the traditional cleaning and separation equipment also has certain limitations in treatment effect, which makes it difficult to fully clean and effectively separate the regenerated plastics, thereby affecting the recycling value of the regenerated plastics.

[0004] The current technical field mainly has the following defects: (1) the connection between the separation and cleaning sections is not smooth, and pipe blockage often occurs during material transfer, and the maintenance downtime accounts for a large proportion of the total operation time; (2) the separation device mostly adopts single-shaft stirring structure, and the separation efficiency of entangled impurities (such as fibers and label paper) is low; (3) the flow field in the cleaning tank is turbulent, and the turbulence intensity generated by conventional paddles is not enough to strip stubborn contaminants on the surface of the plastic; (4) the material channel mostly adopts vertical feeding design, which leads to insufficient mixing of plastic particles and cleaning liquid. In addition, the existing equipment has low modularity and is difficult to realize automatic control. Therefore, the existing technology needs to be improved and improved. UTILITY MODEL CONTENTS

[0005] In view of the above shortcomings of the prior art, the purpose of the utility model is to provide a regenerated plastic surface treatment device to solve the problems of incomplete separation and insufficient cleaning in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a regenerated plastic surface treatment device, comprising a mounting rack, a separation tank, a cleaning tank, a feeding port, a material channel, a separation paddle and a stirring paddle;

[0007] The separation tank is a horizontally placed cylindrical structure, and the cleaning tank is a vertically placed circular tank body, whose axis is arranged perpendicularly to the axis of the separation tank at 90 degrees; the separation tank is fixedly installed on the mounting rack, the top of the separation tank is provided with a feeding opening for feeding materials and water, the middle of the separation tank is provided with a material outlet, the sidewall of the cleaning tank is provided with a material inlet, the material outlet and the material inlet are connected through an inclined material channel, the material channel forms an angle of 35-45 degrees with the horizontal plane, a pneumatic gate is arranged in the material channel, and the separation paddle is rotatably arranged in the separation tank.

[0008] In an embodiment of the utility model, still include sewage outlet and loading box, loading box detachable setting on mounting rack, separation tank bottom open sewage outlet, sewage outlet place set up for open and close sewage valve.

[0009] The beneficial effects of the above embodiment are that the sewage outlet and the detachable loading box facilitate the collection and treatment of sewage and impurities generated during the separation process, avoid secondary pollution, improve environmental protection, and the sewage valve can control the sewage process, making the operation more flexible and convenient, which is beneficial to the maintenance and cleaning of the equipment.

[0010] In an embodiment of the utility model, the loading box comprises a collection groove, a filter screen and a sewage tank arranged in sequence from top to bottom, the filter screen is uniformly provided with filter holes, and the collection groove is connected with the sewage tank through the filter holes.

[0011] The beneficial effects of the above embodiment are that the layered structure of the collection groove, the filter screen and the sewage tank realizes the step-by-step filtration and collection of sewage, improves the recycling rate of water resources, and reduces water resource waste, and the filter holes of the filter screen can intercept impurity particles of different particle sizes as needed, ensuring the filtering effect, and the structure is simple, easy to maintain and replace.

[0012] In an embodiment of the utility model, the filter screen is a stepped filter screen group, which comprises three layers of stainless steel filter screens with hole diameters of 3mm, 1mm and 0.5mm.

[0013] The beneficial effects of the above embodiment are that the multi-layer filter screens of different hole diameters of the stepped filter screen group can more effectively filter impurities of different particle sizes, improve the filtering precision and efficiency, adapt to the cleaning needs of regenerated plastics of different types and pollution levels, and enhance the versatility and reliability of the equipment.

[0014] In an embodiment of the utility model, a fence is further included, the collection groove is circumferentially provided with the fence, the fence is fixedly connected with the groove body of the collection groove, and the fence is outwardly unfolded to form a 45-degree flow guide slope.

[0015] The beneficial effects of the above embodiment are that the setting of the fence prevents the material in the collecting groove from scattering, keeps the equipment clean, the 45-degree flow guide slope is beneficial to the concentrated collection and transportation of the material, improves the processing efficiency, and enhances the stability and safety of the equipment.

[0016] In an embodiment of the present application, the cleaning tank comprises a cylindrical tank body and a tank cover arranged on the tank body, and the stirring paddle is arranged in the cylindrical tank body and located on the center line of the cylindrical tank body.

[0017] The beneficial effects of the above embodiment are that the cylindrical structure of the cleaning tank and the stirring paddle on the center line can make the stirring more uniform, ensure that the regenerated plastic is in full contact with the cleaning liquid, and improve the cleaning effect.

[0018] In an embodiment of the present application, a driving motor is further included, the driving motor is fixedly installed at the center of the tank cover, and the output end of the driving motor is connected with the stirring paddle.

[0019] The beneficial effects of the above embodiment are that the driving motor provides power for the stirring paddle, ensures the stability and continuity of the stirring process, and improves the cleaning efficiency.

[0020] In an embodiment of the present application, the driving motor is a planetary reducer.

[0021] The beneficial effects of the above embodiment are that the planetary reducer has a large torque output as the driving motor, can provide strong stirring power at low speed, is suitable for processing regenerated plastic with high viscosity or difficult to clean, improves the adaptability and cleaning effect of the equipment, and reduces energy consumption and equipment wear.

[0022] In an embodiment of the present application, a water exchange opening for injecting water into the cleaning tank and discharging water from the cleaning tank is further included, and the water exchange opening is arranged at the bottom of the tank body.

[0023] The beneficial effects of the above embodiment are that the setting of the water exchange opening facilitates the replacement and discharge of water in the cleaning tank, is beneficial to maintaining the cleanliness of the cleaning liquid, and improves the cleaning effect; in addition, the water exchange opening is arranged at the bottom of the tank body, so that the sewage can be smoothly discharged under the action of gravity, reduces the water discharge time, and improves the working efficiency.

[0024] In an embodiment of the present application, a spiral flow guide rib is arranged on the inner wall of the cleaning tank.

[0025] The beneficial effects of the above-mentioned embodiments are that the helical flow guide ribs of the inner wall can make the water flow form a spiral flow in the tank, enhance the impact force and stirring effect of the water flow, further improve the cleaning efficiency, and help to prevent plastic particles from accumulating on the tank wall, keep the tank clean, and prolong the service life of the equipment.

[0026] As described above, the regenerated plastic surface treatment device has the following beneficial effects: a dynamic flotation separation system based on liquid level control is constructed, and a composite treatment system combining the dynamic flotation separation system with a reinforced turbulent cleaning mechanism is constructed.When the regenerated plastic particles containing impurities and water flow are injected into the transversely arranged separation tank through the injection port, the system adjusts the water level in the tank through the precise liquid level sensor, so that the plastic with low density floats to the liquid surface, and the heavy impurities such as metal scraps with high density sink.The double helix structure of the separation paddle forms the dual effects of axial push flow and radial shear during rotation, and pushes the plastic particles to move towards the middle material outlet.The orthogonal layout of the separation tank and the cleaning tank structure makes the separation and cleaning processes physically isolated, improves the flotation separation efficiency through precise liquid level control, and makes the plastic surface reach higher cleanliness through the turbulent cleaning, thereby improving the cleaning effect, and the whole device has compact layout and small footprint, thereby reducing the production cost. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, and obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0028] Figure 1 The structure diagram of the regenerated plastic surface treatment device provided by the present application is shown.

[0029] Element number explanation

[0030] 1, mounting bracket; 2, separation tank; 3, cleaning tank; 4, injection port; 5, material channel; 6, separation paddle; 7, stirring paddle; 8, bolt; 9, sewage outlet; 10, loading box; 11, collection tank; 12, filter screen; 13, sewage tank; 14, fence; 15, cylindrical tank body; 16, tank cover; 17, driving motor; 18, water changing port. DETAILED DESCRIPTION

[0031] The present application provides a regenerated plastic surface treatment device, in order to make the purpose, technical scheme and effect of the present application more clear and definite, the following will be further described in detail with reference to the drawings and examples.

[0032] In the description of the utility model, need understanding is, the orientation or positional relation indicated by the term '' up and down, left and right '' etc. It is based on the orientation or positional relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, can not be understood as the limitation of the utility model, in addition, the terms '' installation '' '' connection '' etc. It should be understood in a broad sense, for ordinary skilled in the art, can understand the specific meaning of the above terms in the utility model according to the specific circumstances.

[0033] Please refer to Figure 1 The utility model provides a kind of recycled plastic surface treatment device, containing installation frame 1, the vertical separation tank 2 and longitudinal cleaning tank 3 constitute three-dimensional processing system.The separation tank 2 adopts cylindrical structure, its axis is arranged in parallel with horizontal plane;The cleaning tank 3 axis is perpendicular to separation tank 2, forms spatial orthogonal layout, and both are realized gravity guiding connection by material channel 5 with 40 °±2 ° of inclination angle.The top of separation tank 2 is provided with drop port 4, and plastic chips and cleaning medium can be injected synchronously.Material channel 5 is internally equipped with pneumatic gate assembly, and the valve plate thereof is made of 304 stainless steel material, and the surface is covered with polytetrafluoroethylene wear-resistant layer.

[0034] The cleaning tank 3 is composed of a cylindrical tank body 15 and a detachable tank cover 16, and the ratio of the inner diameter to the height of the tank body is 1:1.5.The planetary reduction drive unit is assembled at the center of the tank cover 16.The paddle shaft surface of the stirring paddle 7 is provided with an anti-winding ceramic coating.A water exchange port 18 is arranged at the bottom of the tank body, and an electromagnetic flow control valve is provided.The spiral flow guide ribs arranged on the inner wall include two groups of main ribs and auxiliary ribs.The main ribs have a lead of 1.2 times the height of the tank body, and the auxiliary ribs are distributed at an interlacing angle of 30 °, and the rib height is 5% of the tank diameter.The cylindrical tank body 15 and the tank cover 16 are fixedly connected by bolts 8.

[0035] The bottom of the separation tank 2 is connected to a multi-stage filter loading box 10, which is composed of a collecting groove 11, a filter screen 12 and a sewage tank 13 to form a modular assembly unit.The collecting groove 11 is circumferentially provided with a 80mm-high fence 14 structure, and the top thereof extends outward to form a 45 ° flow guide slope.The stepped filter screen group includes three levels of 304 stainless steel punched filter screens, and the aperture gradient is set to 3mm, 1mm and 0.5mm.The filter screen frame is provided with elastic buckles and side wall positioning grooves of the box to form a quick disassembly and assembly structure.The sewage tank 13 is optionally provided with a liquid level sensor and a pH value detection probe at the bottom to realize intelligent monitoring of the wastewater treatment process.

[0036] The drive motor 17 is a combination of a planetary reduction motor and a variable frequency control unit, and the output shaft is rigidly connected to the stirring paddle 7 through a flange coupling.The motor housing is provided with annular heat dissipation fins, and a temperature protection module is integrated inside to ensure the operation stability of the equipment under continuous operation conditions.

[0037] When the device is running, the plastic pieces to be processed enter the separation tank 2 through the feeding port 4, under the action of the centrifugal field generated by the separation paddle 6, the metal impurities with relatively large density are settled along the tank wall helical guide plate to the bottom, and then discharged to the loading box 10, and the impurity particles with different particle sizes are gradually intercepted through the three-stage filter screen. The plastic particles after preliminary separation are transported into the cleaning tank 3 through the material channel 5 under the action of buoyancy, and the pneumatic gate automatically adjusts the opening degree to control the transmission rate according to the material flow. The stirring paddle 7 is driven by the planetary reducer to form a three-dimensional vortex field, and the secondary circulation generated by the helical guide rib makes the plastic pieces and the cleaning liquid produce sufficient contact and friction. The sewage generated in the cleaning process is discharged through the water exchange port 18, and the finally purified water can be recycled through the recirculation pipeline.

[0038] In summary, the regenerated plastic surface treatment device of the utility model constructs a composite treatment system combined with a dynamic flotation separation system based on liquid level control and a reinforced turbulent cleaning mechanism. When the regenerated plastic particles containing impurities and water flow are injected into the transverse separation tank 2 through the feeding port 4, the system adjusts the water level in the tank through the accurate liquid level sensor, so that the plastic with low density floats to the liquid surface, and the heavy impurities such as metal scraps with high density settle. The double-helix structure of the separation paddle 6 forms the dual action of axial push flow and radial shear during rotation, which pushes the plastic particles to move to the central material outlet. The inclined material channel 5 is designed with an optimal inclination angle of 35-45°, which makes the plastic particles form a thin layer of sliding motion under the combined action of gravity and water flow force, and cooperates with the intermittent opening and closing control of the pneumatic gate to realize the smooth conveying of the material to the vertical cleaning tank 3 at a preset rate, effectively avoiding the problems of particle accumulation and pipeline blockage caused by traditional vertical feeding. The stirring paddle 7 in the cleaning tank 3 generates gradient shear force through different rotating speeds, the high-speed paddle blade in the lower layer forms a strong vortex to strip stubborn contaminants from the surface, the middle paddle blade prolongs the suspension time of the particles to ensure the full action of the chemical cleaning agent, and the low-speed paddle blade in the upper layer suppresses the generation of foam. The orthogonal layout of the tank structure physically separates the separation and cleaning processes, and the flotation wastewater is immediately discharged through the bottom discharge outlet 9 to avoid secondary pollution of the cleaning section. The device improves the flotation separation efficiency through accurate liquid level control, and realizes higher cleanliness of the plastic surface through turbulent cleaning, effectively solving the technical bottlenecks of incomplete separation, large cleaning damage and high energy consumption in the prior art. Therefore, the utility model effectively overcomes the shortcomings of the prior art and has high industrial utilization value.

[0039] It can be understood that, for those skilled in the art, equivalent replacement or change can be made according to the technical scheme and the utility model concept of the utility model, and all these changes or replacements shall belong to the protection scope of the utility model.

Claims

1. A surface treatment device for recycled plastics, characterized in that, This includes the mounting frame, separation tank, washing tank, feeding port, material channel, separation paddle, and mixing paddle; The separating tank is a horizontally placed cylindrical structure, and the cleaning tank is a vertically placed circular tank with its axis orthogonal to the axis of the separating tank at 90°. The separating tank is fixedly installed on the mounting frame. The top of the separating tank is provided with an inlet for feeding materials and water. The middle of the separating tank is provided with a material outlet. The side wall of the cleaning tank is provided with a material inlet. The material outlet and the material inlet are connected by an inclined material channel. The material channel is at an angle of 35-45° to the horizontal plane. A pneumatic gate is provided in the material channel. The separating paddle is rotatably installed inside the separating tank, and the stirring paddle is rotatably installed inside the cleaning tank.

2. The recycled plastic surface treatment device according to claim 1, characterized in that, It also includes a sewage outlet and a loading box, the loading box being detachably mounted on the mounting frame, the sewage outlet being located at the bottom of the separation tank, and a sewage valve for opening and closing the sewage channel being provided at the sewage outlet.

3. The recycled plastic surface treatment apparatus according to claim 2, characterized in that, The loading container includes a collection tank, a filter screen, and a sewage tank arranged sequentially from top to bottom. The filter screen is evenly distributed with filter holes, and the collection tank is connected to the sewage tank through the filter holes.

4. The recycled plastic surface treatment apparatus according to claim 3, characterized in that, The filter screen is a stepped filter screen assembly, consisting of three layers of stainless steel filter screen with pore sizes of 3mm, 1mm, and 0.5mm respectively.

5. The recycled plastic surface treatment apparatus according to claim 3, characterized in that, It also includes a barrier, which is provided around the circumference of the collection tank. The barrier is fixedly connected to the tank body and extends outward to form a 45° guide slope.

6. The recycled plastic surface treatment apparatus according to claim 1, characterized in that, The cleaning tank includes a cylindrical tank body and a lid covering the tank body, and the agitator is disposed inside the cylindrical tank body and located on the center line of the cylindrical tank body.

7. The recycled plastic surface treatment apparatus according to claim 6, characterized in that, It also includes a drive motor, which is fixedly installed at the center of the tank lid, and the output end of the drive motor is connected to the stirring paddle.

8. The recycled plastic surface treatment apparatus according to claim 7, characterized in that, The drive motor is a planetary gear reducer.

9. The recycled plastic surface treatment apparatus according to claim 6, characterized in that, It also includes a water inlet for filling the cleaning tank with water and draining water from the cleaning tank, the water inlet being located at the bottom of the tank.

10. The recycled plastic surface treatment apparatus according to claim 1, characterized in that, The inner wall of the cleaning tank is provided with spiral guide ribs.

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