Cleaning and sorting device for plastic strip materials

Abstract

The utility model belongs to the technical field of plastic recycling, and particularly relates to a cleaning and sorting device for plastic strip materials. According to the utility model, the plastic and the impurities are effectively separated by utilizing different densities of the plastic and the impurities and differentiated sedimentation of the plastic and the impurities in water; after being shredded, the sundry plastic is treated by the cleaning and sorting device, so that the contained impurities can be quickly removed, the impurity rate of the sundry plastic after passing through the device is effectively reduced, and the efficiency improvement and load reduction of the subsequent process equipment are realized; compared with magnetic separation iron removal, water flotation separation is good in effect and low in energy consumption; furthermore, radial material stirring columns are arranged on the double stirring spirals which rotate reversely, so that sundry plastics are scattered, the plastics are better separated and cleaned, and floating plastics and submerged plastics can be better sorted and separated; and the mesh type spiral blade is adopted, so that impurities, plastics and the like can be output in a draining manner, and the aim of saving water is fulfilled.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic recycling and reuse, and in particular relates to a cleaning and sorting device for plastic sheet and strip materials. Background Art

[0002] Daily miscellaneous plastics recovered from resource recycling need to be cleaned, sorted and removed after crushing. The main impurities removed include sticky dirt, non-plastic mixtures (such as iron, gravel, glass, etc.) and the sorting of plastics of different densities.

[0003] However, the existing pre-washing device (also known as the bleaching tank in the industry) is not sophisticated enough in its use function. It only washes the plastic strip materials and separates the two phases (i.e., floating plastic and sinking plastic) without considering the continuous and effective removal of other impurities contained in the plastic strip materials. In addition, the stirring during washing disturbs the materials too much, causing certain interference to the materials that need to be settled, resulting in low sorting efficiency.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the above-mentioned prior art and provide a cleaning and sorting device for plastic strips, which utilizes the differentiated settling speeds of different plastics and impurities in water to solve the problem of multi-material sorting and separation.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A cleaning and sorting device for plastic strips, comprising a cleaning and sorting tank, the cleaning and sorting tank comprising an impurity storage tank and a plastic storage tank, the impurity storage tank being connected to an impurity screw conveyor, the plastic storage tank being connected to a floating plastic screw conveyor and a submerged plastic screw conveyor respectively; the cleaning and sorting tank is provided with a daily miscellaneous plastic feed port;

[0008] The cleaning and sorting tank is provided with a spiral stirring device for cleaning and drifting plastics.

[0009] Specifically, the feed port of the impurity screw conveyor is connected to the first impurity discharge port of the impurity storage tank, and the impurity screw conveyor is provided with a second impurity discharge port.

[0010] Specifically, a barrier plate for adjusting the boundary point between plastic and impurities is provided between the plastic storage tank and the impurity storage tank.

[0011] Specifically, the side wall of the cleaning and sorting tank is provided with an observation window for observing the position of the baffle plate.

[0012] Specifically, the feed port of the floating plastic screw conveyor is connected to the first floating plastic discharge port of the plastic storage tank, and the floating plastic screw conveyor is provided with a second floating plastic discharge port.

[0013] Specifically, the feed port of the submersible plastic screw conveyor is connected to a first submersible plastic discharge port arranged at the bottom of the plastic storage tank, and the submersible plastic screw conveyor is provided with a second submersible plastic discharge port.

[0014] Specifically, the impurity screw conveyor, the floating plastic screw conveyor and the submerged plastic screw conveyor are all provided with mesh plate spiral blades for collecting water.

[0015] Specifically, the spiral stirring device is a counter-rotating double-spiral stirring device.

[0016] Specifically, the spiral stirring device is provided with a mesh plate spiral blade.

[0017] Specifically, the spiral stirring device includes a rotating shaft and spiral blades arranged in the circumferential direction of the rotating shaft. The rotating shaft is provided with radial material-moving columns for conveniently breaking up and cleaning plastics.

[0018] Compared with the prior art, the technical solution provided by the utility model includes the following beneficial effects:

[0019] The utility model utilizes the different densities of plastics and impurities, and the differential sedimentation in water to effectively separate plastics and impurities. After the recycled plastics are shredded, they are processed by a cleaning and sorting device to quickly remove the impurities contained therein, effectively reducing the impurity rate of the plastics after passing through the device, and improving the efficiency and reducing the load on the subsequent process equipment. Moreover, the water flotation separation has a better effect than magnetic separation for iron removal and has low energy consumption. Furthermore, radial material stripping columns are arranged on the reverse double stirring spirals to break up the plastics so that the plastics can be better separated and cleaned, and the floating plastics and the sinking plastics can be better sorted and separated. The mesh spiral blades are adopted so that impurities, plastics, etc. can be discharged by water, thereby achieving the goal of water saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings herein are incorporated into and constitute a part of this specification, and together with the description, are used to explain the principles of the present utility model.

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0022] Figure 1 It is the front view of the utility model;

[0023] Figure 2 for Figure 1 A top view of

[0024] Figure 3 for Figure 1 Side view of.

[0025] Among them: 1 is a cleaning and sorting tank; 11 is a spiral stirring device; 12 is a plastic storage tank; 13 is an impurity storage tank; 14 is a daily miscellaneous plastic feed port; 15 is a baffle plate; 16 is a radial material shifting column; 2 is an impurity screw conveyor; 21 is a second impurity discharge port; 3 is a floating plastic screw conveyor; 31 is a second floating plastic discharge port; 4 is a submerged plastic screw conveyor; 41 is a second submerged plastic discharge port. DETAILED DESCRIPTION

[0026] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present utility model. Instead, they are only examples consistent with some aspects of the present utility model as detailed in the attached claims.

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] Example

[0029] A cleaning and sorting device for plastic strips, comprising a cleaning and sorting tank 1, wherein the cleaning and sorting tank 1 comprises an impurity storage tank 13 and a plastic storage tank 12, wherein the impurity storage tank 13 is connected to an impurity screw conveyor 2, and the plastic storage tank 12 is respectively connected to a floating plastic screw conveyor 3 and a submerged plastic screw conveyor 4; the cleaning and sorting tank 1 is provided with a daily miscellaneous plastic feed port 14;

[0030] The cleaning and sorting tank 1 is provided with a spiral stirring device 11 for cleaning and drifting plastics.

[0031] Specifically, the feed port of the impurity screw conveyor 2 is connected to the first impurity discharge port of the impurity storage tank 13 , and the impurity screw conveyor 2 is provided with a second impurity discharge port 21 .

[0032] Specifically, a barrier plate 15 for adjusting the boundary point between plastic and impurities is provided between the plastic storage tank 12 and the impurity storage tank 13 .

[0033] Specifically, the side wall of the cleaning and sorting tank 1 is provided with an observation window for observing the position of the baffle plate 15 .

[0034] Specifically, the feed port of the floating plastic screw conveyor 3 is connected to the first floating plastic discharge port of the plastic storage tank 12 , and the floating plastic screw conveyor 3 is provided with a second floating plastic discharge port 31 .

[0035] Specifically, the feed port of the submersible plastic screw conveyor 4 is connected to the first submersible plastic discharge port arranged at the bottom of the plastic storage tank 12 , and the submersible plastic screw conveyor 4 is provided with a second submersible plastic discharge port 41 .

[0036] Specifically, the impurity screw conveyor 2, the floating plastic screw conveyor 3 and the submerged plastic screw conveyor 4 are all provided with mesh plate spiral blades for collecting water.

[0037] Specifically, the spiral stirring device 11 is a double-spiral stirring device that rotates in opposite directions.

[0038] Specifically, the spiral stirring device 11 is provided with a mesh plate spiral blade.

[0039] Specifically, the spiral stirring device 11 includes a rotating shaft and spiral blades arranged in the circumferential direction of the rotating shaft. The rotating shaft is provided with radial material-moving columns 16 for breaking up and cleaning the plastic.

[0040] This embodiment also provides a method for using a cleaning and sorting device for plastic strips, which is specifically as follows:

[0041] The miscellaneous plastics to be processed enter the cleaning and sorting tank 1 through the miscellaneous plastics feed port 14, where the high-density impurities (iron, gravel, glass, etc.) contained in the miscellaneous plastics are affected by gravity (iron 7.8g / cm 3 , gravel 2.65g / cm 3 , Glass 2.5g / cm 3 , while plastic is only 0.8~1.3g / cm 3 ) sinks to the bottom of the impurity storage tank 13, and is transported to the impurity collection device from the second impurity discharge port 21 after being scooped by the impurity screw conveyor 2; at this time, the position of the baffle plate 15 can be observed and adjusted in real time from the observation window to adjust the separation point between the impurity storage tank 13 and the plastic storage tank 12 when the impurities sink;

[0042] Then, the daily miscellaneous plastics are stirred and cleaned by the spiral stirring device 11, drift to the plastic storage tank 12, and are broken up by the radial material-dispensing column 16 and immersed in water for cleaning; among them, the submerged plastics slowly sink to the bottom of the plastic storage tank 12 due to the influence of gravity, and are transported to the next processing equipment from the second submerged plastic discharge port 41 after being sieved by the submerged plastic screw conveyor 4; and the floating plastics continue to be stirred and cleaned by the spiral stirring device 11, and drift to the feed port of the floating plastic screw conveyor 3, and are transported to the next processing equipment through the second floating plastic discharge port 31 after being sieved by the floating plastic screw conveyor 3.

[0043] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention.

[0044] It should be understood that the present invention is not limited to the above-described contents, and various modifications and changes can be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims

1. A cleaning and sorting device for plastic strips, characterized in that: The cleaning and sorting tank (1) comprises a daily miscellaneous plastic feed port (14), an impurity storage tank (13) and a plastic storage tank (12), wherein the impurity storage tank (13) is connected to an impurity screw conveyor (2), and the plastic storage tank (12) is respectively connected to a floating plastic screw conveyor (3) and a submerged plastic screw conveyor (4); The cleaning and sorting tank (1) is provided with a spiral stirring device (11) for cleaning and drifting plastics.

2. The cleaning and sorting device according to claim 1, characterized in that: The feed port of the impurity screw conveyor (2) is connected to the first impurity discharge port of the impurity storage tank (13), and the impurity screw conveyor (2) is provided with a second impurity discharge port (21).

3. The cleaning and sorting device according to claim 1, characterized in that: A barrier plate (15) for adjusting the boundary point between plastic and impurities is provided between the plastic storage tank (12) and the impurity storage tank (13).

4. The cleaning and sorting device according to claim 3, characterized in that: The side wall of the cleaning and sorting tank (1) is provided with an observation window for observing the position of the baffle plate (15).

5. The cleaning and sorting device according to claim 1, characterized in that: The feed port of the floating plastic screw conveyor (3) is connected to the first floating plastic discharge port of the plastic storage tank (12), and the floating plastic screw conveyor (3) is provided with a second floating plastic discharge port (31).

6. The cleaning and sorting device according to claim 1, characterized in that: The feed port of the submersible plastic screw conveyor (4) is connected to a first submersible plastic discharge port provided at the bottom of the plastic storage tank (12), and the submersible plastic screw conveyor (4) is provided with a second submersible plastic discharge port (41).

7. The cleaning and sorting device according to claim 1, characterized in that: The impurity screw conveyor (2), the floating plastic screw conveyor (3) and the submerged plastic screw conveyor (4) are all provided with mesh plate spiral blades for collecting water.

8. The cleaning and sorting device according to claim 1, characterized in that: The spiral stirring device (11) is a double spiral stirring device that rotates in opposite directions.

9. The cleaning and sorting device according to claim 1, characterized in that: The spiral stirring device (11) is provided with mesh plate spiral blades.

10. The cleaning and sorting device according to claim 1, characterized in that: The spiral stirring device (11) comprises a rotating shaft and spiral blades arranged in the circumferential direction of the rotating shaft. The rotating shaft is provided with radial material-moving columns (16) for conveniently breaking up and cleaning plastics.

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