A plastic medical waste color selection substandard recycling device

Abstract

The utility model provides a kind of plastic medical waste color selection substandard recycling processing device, including blanking mechanism, and the output end below blanking mechanism is equipped with belt conveyor, and the output end of belt conveyor is docked with color sorter;The other side of color sorter is provided with finished product discharge port, substandard product discharge port;Wherein, substandard product discharge port below is provided with hopper, and hopper lower end is connected with reflux pipe and is connected;The input end of reflux pipe is connected with first fan, and the output end of reflux pipe is connected with blanking mechanism and keeps intercommunication.The plastic medical waste color selection substandard recycling processing device provided by the utility model can improve recovery rate.

Description

Technical Field

[0001] This utility model relates to the field of plastic medical waste treatment and recycling, and in particular to a plastic medical waste color selection and recycling device. Background Technology

[0002] Plastic medical waste includes plastic infusion bags (with infusion tubing), syringes, etc. The final step in recycling plastic medical waste involves sending it to a color sorter for color separation to ensure the quality of the recycled plastic.

[0003] Existing color sorters typically perform a single color sort, meaning the raw material (plastic fragments from previous processes) enters through the sorter inlet, undergoes color sorting, and exits through the outlet, completing the sorting process. The sorter outputs a defective product outlet and a finished product outlet. The finished product outlet connects to a screw conveyor for transport to the next process. Defective products exit through the defective product outlet, are collected in bags, and transferred to a defective product accumulation area for further processing. Because the color sorter only performs a single color sort, the sorting is incomplete, and finished products can easily mix with defective products. This results in low sorting accuracy for separating discolored impurities and a low recovery rate. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a plastic medical waste color sorting and recycling device that performs multiple color sorting cycles to improve the recycling rate of plastic medical waste.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A plastic medical waste color sorting and defective product recycling device includes a feeding mechanism, a belt conveyor installed below the output end of the feeding mechanism, and the output end of the belt conveyor connected to the color sorter; the other side of the color sorter is provided with a finished product outlet and a defective product outlet; wherein, a hopper is provided below the defective product outlet, and the lower end of the hopper is connected to a return pipe; the input end of the return pipe is connected to a first fan, and the output end of the return pipe is connected to the feeding mechanism and kept in communication.

[0007] The feeding mechanism includes a feeding tank, with materials input through an air conveying pipe at the top of the feeding tank. A discharge port with an electromagnetic opening and closing valve is provided at the bottom of the feeding tank. The discharge port is connected to the feeding chamber. A discharge chamber is installed at the bottom of the feeding chamber and is fixed to a support at the bottom. A discharge chute is provided on one side of the discharge chamber, and the discharge port of the discharge chute is located above the input end of the belt conveyor.

[0008] The feeding tanks consist of three sets, with two sets of corresponding defective product outlets. The two sets of defective product outlets respectively discharge the first and second batches of screened products. Each set of defective product outlets is equipped with a hopper, a return pipe, and a first blower. The air conveying pipe of one set of feeding tanks is used to input unsorted raw materials. The air conveying pipes of the other two sets of feeding tanks are connected to the corresponding return pipes. The air conveying pipes of the other two sets of feeding tanks are used to input the first and second batches of products, respectively.

[0009] The outer wall of the feeding tank is detachably connected to the bracket via a connecting assembly.

[0010] The connecting assembly includes a screw, one end of which is hinged to the side wall of the feed tank. A nut is threaded onto the screw, and a corresponding bracket has a notch. The screw enters the notch, and the nut is locked in place by friction with the bracket.

[0011] The three sets of feeding tanks each feed material independently.

[0012] The output end of the air conveying pipe is tangentially connected to the side wall of the feeding tank.

[0013] This utility model provides a device for recycling and processing substandard plastic medical waste, which has the following technical advantages:

[0014] 1) By installing a hopper, return pipe and first fan at the defective product outlet of the color sorter, the two types of defective products can be returned to the feeding end of the color sorter. Subsequently, two or three color sorts can be performed to screen out the finished products mixed in with the defective products, thereby improving the recovery rate of qualified finished products.

[0015] 2) By setting up three sets of feeding tanks, raw materials, primary products (with a low defect rate), and secondary products (with a high defect rate) can be stored separately. Later, independent feeding and separate color sorting can be achieved. This allows for the rational allocation of the color sorter's operating time and parameter settings based on the different qualities of plastic medical waste fragments (or granules). For example, high-quality granules can be quickly screened, while low-quality granules can undergo more refined screening. This improves operational efficiency and recycling rate. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is the front view of the present invention.

[0018] Figure 2 This is a schematic diagram of the feeding mechanism in this utility model.

[0019] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0020] In the diagram: 1. Feeding mechanism; 2. Belt conveyor; 3. Color sorter; 4. Finished product outlet; 5. Defective product outlet; 6. Screw conveyor; 7. Hopper; 8. Return pipe; 9. First blower. Detailed Implementation

[0021] like Figure 1 As shown, a plastic medical waste color sorting and defective product recycling device includes a feeding mechanism 1. One side of the feeding mechanism 1 has an outlet directly opposite the input end of a belt conveyor 2 below it. The output end of the belt conveyor 2 extends into a color sorter 3. The other side of the color sorter 3 is provided with a finished product outlet 4 and a defective product outlet 5. The finished product outlet 4 is connected to a screw conveyor 6, which transports the finished product to the next process. There are two sets of defective product outlets 5; one set has a lower defect rate, while the other set has a higher defect rate.

[0022] Below each defective product outlet 5, there is a hopper 7. The outlet at the lower end of each hopper 7 is connected to and maintains communication with the return pipe 8. The input end of the return pipe 8 is connected to the first blower 9, and the output end of the return pipe 8 is connected to and maintains communication with the feeding mechanism 1.

[0023] During operation, the color-sorted finished products (plastic fragments or granules) are conveyed to the next process via screw conveyor 6; while defective products fall into hopper 7 through defective product outlet 5. The first blower 9 blows the defective products, which then re-enter the feeding mechanism 1 through return pipe 8.

[0024] The feeding mechanism 1 here includes a feeding tank 1.1, which is detachably mounted on the top of the bracket 1.9. There are three sets of feeding tanks 1.1, denoted by ①, ②, and ③ respectively. Each of the three sets of feeding tanks 1.1 has an air delivery pipe 1.2 installed on one side. The output end of the air delivery pipe 1.2 is tangentially connected to and maintains communication with the side wall of the feeding tank 1.1. The advantage of this connection method is that, due to the tangential entry characteristic, a rotational motion tendency is formed. This rotational motion helps disperse the plastic fragments within the pipe, preventing them from accumulating at the pipe inlet. Simultaneously, since the plastic fragments already possess a certain rotational speed upon entering the feeding pipe, this rotational motion, combined with the airflow, creates a certain rotating vortex within the pipe, which, in conjunction with the rotational motion of the plastic fragments, allows them to be carried down by the airflow more quickly. A blower is connected to the air conveying pipe 1.2 of the feeding tank 1.1 (①). The blower transports the unsorted raw materials produced in the previous process to the feeding tank 1.1 (①) through the air conveying pipe 1.2. Feeding tanks 1.1 (②) and 1.1 (③) are used to hold the first batch of products (with a low defect rate) and the second batch of products (with a high defect rate), respectively. The air conveying pipes 1.2 of the feeding tanks 1.1 (②) and 1.1 (③) are connected to the corresponding return pipes 8. The first batch of products and the second batch of products fall into the corresponding hoppers 7 through the two sets of defective product outlets 5, and are then air-pumped back to the corresponding feeding tanks 1.1 (②) and 1.1 (③) through the return pipes 8.

[0025] The lower end of the feeding tank 1.1 has a discharge port 1.3, which is equipped with an electromagnetic valve that controls the opening and closing of the discharge port 1.3. When the electromagnetic valve is open, the discharge port 1.3 is connected to the lower feeding chamber 1.4, allowing material to be discharged; when the electromagnetic valve is closed, the discharge port 1.3 is disconnected from the lower feeding chamber 1.4, preventing material from being discharged.

[0026] The lower end of the discharge port 1.3 is connected to the discharge chamber 1.4, and the side wall of the discharge chamber 1.4 is limited by the bracket 1.9. The bottom end of the discharge chamber 1.4 is connected to the discharge chamber 1.5, and the lower part of the outer end of the discharge chamber 1.5 is fixed to the bracket 1.9 by a support rod 1.6. Multiple support rods 1.6 are arranged around the bottom end of the discharge chamber 1.5. Each support rod 1.6 includes an upper threaded sleeve welded to the discharge chamber 1.5 and a lower threaded sleeve welded to the bracket 1.9. The internal threads of the upper and lower threaded sleeves have opposite directions, and the threads of the corresponding upper and lower sections of the screw have opposite directions and match the threads of the upper and lower threaded sleeves. The upper and lower threaded sleeves are threadedly connected to the screw. When the screw is rotated, the upper and lower threaded sleeves can be moved closer or further apart, thus achieving adjustment during installation.

[0027] A vibratory motor can be installed at the bottom of the outer end of the discharge chamber 1.5 to accelerate material discharge. A discharge chute is connected to the opening on one side of the discharge chamber 1.5 and remains in communication with it. The discharge port of the discharge chute is located above the input end of the belt conveyor 2.

[0028] like Figure 3 As shown, preferably, the outer wall of the feeding tank 1.1 is detachably connected to the bracket 1.9 via a connecting assembly 1.7. The connecting assembly 1.7 includes a screw 1.7.1, with a crossbar 1.7.2 fixed to the upper end of the screw 1.7.1. The crossbar 1.7.2 is rotatably connected to an ear plate 1.7.3 on the outer wall of the feeding tank 1.1. The ear plate 1.7.3 is welded to the outer wall of the feeding tank 1.1. A nut 1.7.4 is threaded onto the screw 1.7.1, and the corresponding bracket 1.9 has a notch 1.7.5. The screw 1.7.1 is vertically inserted into the notch 1.7.5, and the nut 1.7.4 is frictionally locked to the lower end face of the rod of the bracket 1.9.

[0029] When disassembly is required, rotate screw 1.7.1 outward and upward. After screw 1.7.1 disengages from notch 1.7.5 of bracket 1.9, the feed tank 1.1 can be lifted upward.

[0030] Preferably, the connecting assembly 1.7 is installed at the conical portion of the feed tank 1.1. Multiple limiting frames 1.8 are formed on the upper part of the bracket 1.9. When the conical portion of the feed tank 1.1 contacts and is supported by the limiting frames 1.8, the ear plate 1.7.3 is located above and close to the limiting frames 1.8. When hoisting the feed tank 1.1, quick installation can be achieved by aligning the rotating screw 1.7.1 with the notch 1.7.5.

[0031] During operation, due to the different impurities in the raw materials, the first-stage product (with a low defect rate), and the second-stage product (with a high defect rate), the electromagnetic on / off valves at the corresponding discharge ports 1.3 are controlled to allow the three materials to be fed separately. This avoids interference from impurities or unqualified materials in the defective products with the raw material color sorting process, thus ensuring the quality stability of the final product. After feeding, the material (plastic fragments) enters the color sorter 3 via belt conveyor 2. After color sorting, qualified finished products continue to the next process, while unqualified defective products are returned to the feeding mechanism 1 through the return pipe 8, awaiting further sorting. Through multiple color sorting processes, the amount of defective products is reduced, and the product recovery rate is improved.

Claims

1. A recycling device for recycled plastic medical waste, characterized in that: The system includes a feeding mechanism (1), a belt conveyor (2) installed below the output end of the feeding mechanism (1), and the output end of the belt conveyor (2) connected to the color sorter (3); the other side of the color sorter (3) is provided with a finished product outlet (4) and a defective product outlet (5); a hopper (7) is provided below the defective product outlet (5), and the lower end of the hopper (7) is connected to the return pipe (8); the input end of the return pipe (8) is connected to the first fan (9), and the output end of the return pipe (8) is connected to the feeding mechanism (1) and kept in communication.

2. The plastic medical waste color selection and recycling device according to claim 1, characterized in that: The feeding mechanism (1) includes a feeding tank (1.1). Material is fed into the upper end of the feeding tank (1.1) through an air conveying pipe (1.2). A discharge port (1.3) with an electromagnetic opening and closing valve is provided below the feeding tank (1.1). The discharge port (1.3) is connected to the feeding chamber (1.4). A discharge chamber (1.5) is installed at the bottom of the feeding chamber (1.4). The bottom of the discharge chamber (1.5) is fixed to the bracket (1.9). A discharge chute is provided on one side of the discharge chamber (1.5). The discharge port of the discharge chute is located above the input end of the belt conveyor (2).

3. The plastic medical waste recycling device according to claim 2, characterized in that: The feeding tanks (1.1) consist of three sets, and the corresponding defective product outlets (5) consist of two sets. The two sets of defective product outlets (5) are used to discharge the first and second products after screening, respectively. Each set of defective product outlets (5) is equipped with a hopper (7), a return pipe (8), and a first blower (9). The air conveying pipe (1.2) of one set of feeding tanks (1.1) is used to input the raw materials that have not been color sorted. The air conveying pipes (1.2) of the other two sets of feeding tanks (1.1) are connected to the corresponding return pipes (8). The air conveying pipes (1.2) of the other two sets of feeding tanks (1.1) are used to input the first and second products, respectively.

4. The plastic medical waste color selection and recycling device according to claim 3, characterized in that: The outer wall of the feeding tank (1.1) is detachably connected to the bracket (1.9) via a connecting assembly (1.7).

5. The plastic medical waste color selection and recycling device according to claim 4, characterized in that: The connecting assembly (1.7) includes a screw (1.7.1), one end of which is hinged to the side wall of the feed tank (1.1). A nut (1.7.4) is threaded onto the screw (1.7.1), and the corresponding bracket (1.9) has a notch (1.7.5). The screw (1.7.1) enters the notch (1.7.5), and the nut (1.7.4) is frictionally locked with the bracket (1.9).

6. The plastic medical waste color selection and recycling device according to claim 5, characterized in that: The three sets of feeding tanks (1.1) feed materials independently.

7. The plastic medical waste color selection and recycling device according to claim 6, characterized in that: The output end of the air conveying pipe (1.2) is tangentially connected to the side wall of the feeding tank (1.1).

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