Plastic medical waste color selection and discharging device

Abstract

A plastic medical waste color selection discharging device, including support, the uppermost detachable installation of the support has a discharging tank, the upper end of the discharging tank is installed with a pneumatic conveying pipe, and the fan sends plastic fragments into the discharging tank through the pneumatic conveying pipe;The lower end of the discharging tank is sealedly connected with the discharging chamber through the discharge port and keeps communication;The discharging chamber bottom end is installed with a discharge chamber, and the discharge chamber one side opening is provided with a discharge chute, the discharge chute upper end is fixed with a mounting plate, the mounting plate is provided with a plurality of dust removal branch pipes, the lower end of the plurality of dust removal branch pipes is communicated with the inside of the discharge chute, the other end is communicated with the dust removal main pipe, and the dust removal main pipe is connected with the bag dust collector.The plastic medical waste color selection discharging device can utilize pneumatic conveying to carry out dust treatment when the plastic fragments exist dust.

Description

Technical Field

[0001] This utility model relates to the field of plastic medical waste treatment, and in particular to a plastic medical waste color selection and feeding 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] The patent application number "202310366115.1" entitled "A Plastic Particle Color Sorting Device" uses a conveying fan and a conveying pipe to send plastic particles into a feeding funnel. The unloading mechanism of this device uses a pneumatic conveying method to transport and unload the plastic particles, and the outlet of the conveying pipe is located above the feeding funnel.

[0004] Since conventional plastics may contain dust, the above-mentioned feeding method cannot completely remove the dust. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a plastic medical waste color selection and feeding device, which can use pneumatic conveying to treat dust when there is dust in the plastic fragments during feeding.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A plastic medical waste color selection and feeding device includes a support frame, with a feeding tank detachably installed at the top of the support frame. An air conveying pipe is installed at the upper end of the feeding tank, and a fan feeds plastic fragments into the feeding tank through the air conveying pipe. The lower end of the feeding tank is sealed and connected to the feeding chamber via a discharge port. A discharge chamber is installed at the bottom of the feeding chamber, and a discharge chute is provided at one side opening of the discharge chamber. An mounting plate is fixed at the upper end of the discharge chute, and multiple dust collection branch pipes are provided on the mounting plate. The lower ends of the multiple dust collection branch pipes are connected to the interior of the discharge chute, and the other ends are connected to the main dust collection pipe, which is connected to a bag filter dust collector.

[0008] The output end of the air conveying pipe is tangentially connected to the side wall of the feeding tank and remains in communication with it.

[0009] The bottom of the discharge chamber is fixed to the bracket by a support rod.

[0010] The support rod includes an upper threaded sleeve welded to the discharge chamber and a lower threaded sleeve welded to the bracket. The upper and lower threaded sleeves rotate in opposite directions and are threadedly connected to the screw.

[0011] The upper part of the support is provided with a limiting frame, which provides limiting support for the conical part of the feeding tank.

[0012] The outer wall of the feeding tank is detachably connected to the bracket via a connecting assembly.

[0013] The connecting assembly includes a screw, the upper end of which is hinged to the outer wall of the feed tank; a nut is threadedly connected to the lower part of the screw, and a notch is provided on the corresponding bracket. The screw enters the notch, and the nut is locked in place by friction with the end face of the bracket.

[0014] This utility model provides a plastic medical waste color sorting and feeding device, which has the following technical effects:

[0015] 1) By designing the feeding tank, feeding chamber, and discharge chamber as a sealed, interconnected mechanism, the plastic fragments (treated medical plastic waste) are conveyed by the blower and removed through the discharge chute. Dust collection branch pipes and main dust collection pipes are installed at the discharge chute. Lighter dust particles can enter the dust collection branch pipes with the airflow and be carried away; slightly heavier plastic fragments fall from the discharge chute outlet for recycling. This allows for dust removal when dust is present among the plastic fragments.

[0016] 2) The bag filter of this application does not require a separate fan. It can directly use the air carried by the fan in the previous process to feed the material, thus saving costs. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a schematic diagram of the structure of the present invention (first perspective).

[0019] Figure 2 This is a schematic diagram of the structure of the present invention (second perspective).

[0020] Figure 3 This is the main view of the installation of this utility model.

[0021] In the diagram: 1. Feeding tank; 2. Air conveying pipe; 3. Discharge port; 4. Feeding chamber; 5. Discharge chamber; 6. Discharge chute; 7. Mounting plate; 8. Dust removal branch pipe; 9. Dust removal main pipe; 11. Support rod; 12. Connecting assembly; 12.1. Screw; 12.2. Crossbar; 12.3. Ear plate; 12.4. Nut; 12.5. Notch; 13. Limiting frame. Detailed Implementation

[0022] like Figure 1-2As shown, a plastic medical waste color selection and feeding device includes a feeding tank 1, which is detachably installed at the top of a support 10. An air conveying pipe 2 is installed at the upper end of the feeding tank 1, and the output end of the air conveying pipe 2 is tangentially connected to and maintains communication with the side wall of the feeding tank 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 plastic fragments within the pipe, preventing accumulation 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 the plastic fragments to be carried down by the airflow more quickly. A fan is connected to the air conveying pipe 2, which transports the plastic fragments (raw materials) generated in the previous process to the feeding tank 1. The lower end of the feeding tank 1 has a discharge port 3, at which an electromagnetic valve is installed. The electromagnetic valve controls the opening or closing of the discharge port 3. When the electromagnetic valve is open, the discharge port 3 is connected to the lower discharge chamber 4 to discharge material; when the electromagnetic valve is closed, the discharge port 3 is disconnected from the lower discharge chamber 4 to prevent material from being discharged.

[0023] The lower end of the discharge port 3 is sealed and detachably connected to the discharge chamber 4, allowing plastic fragments to enter the discharge chamber 4. The side wall of the discharge chamber 4 is limited by the bracket 10, and a flap is provided at the top edge of the discharge chamber 4, resting on the crossbeam of the bracket 10. The bottom end of the discharge chamber 4 is connected to the discharge chamber 5, and the lower part of the outer end of the discharge chamber 5 is fixed to the bracket 10 by support rods 11. Multiple support rods 11 are arranged around the bottom end of the discharge chamber 5. Each support rod 11 includes an upper threaded sleeve welded to the discharge chamber 5 and a lower threaded sleeve welded to the bracket 10. 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.

[0024] A vibratory motor can be installed at the bottom of the outer end of the discharge chamber 5 to accelerate material discharge. A discharge chute 6 is connected to an opening on one side of the discharge chamber 5, and the discharge chute 6 is in communication with the discharge chamber 5. An mounting plate 7 is fixed to the upper end of the discharge chute 6. The mounting plate 7 has multiple mounting holes drilled on it, each of which is the same size as the dust collector branch pipe 8. One end of the dust collector branch pipe 8 is welded to the corresponding mounting hole and communicates with the discharge chute 6. The other end of the dust collector branch pipe 8 is connected to the dust collector main pipe 9, which is connected to the bag filter dust collector.

[0025] During operation, the blower feeds plastic fragments into the feeding tank 1. The fragments then enter the feeding chamber 4 and reach the discharge chamber 5, where they are removed via the discharge chute 6 and can be directly fed into the color sorter. Alternatively, after being removed via the discharge chute 6, they can be conveyed into the color sorter via a belt conveyor. During this process, if dust is present in the plastic fragments, due to the airflow from the blower, the lighter dust particles passing through the discharge chute 6 will enter the main dust collection pipe 9 via the dust collection branch pipe 8, and then enter the bag filter for dust removal.

[0026] Preferably, the feeding tank 1 is provided in multiple sets, and raw materials (plastic fragments) of different qualities can be placed in different feeding tanks 1 for independent feeding and separate color sorting. This allows for the rational allocation of the color sorter's operating time and parameter settings according to the different qualities of plastic medical waste fragments (or granules). For example, high-quality granules can be screened quickly, while low-quality granules can undergo more refined screening, thereby improving operational efficiency and recycling rate.

[0027] like Figure 3 As shown, preferably, the outer wall of the feeding tank 1 is detachably connected to the bracket 10 via a connecting assembly 12. The connecting assembly 12 includes a screw 12.1, with a crossbar 12.2 fixed to the upper end of the screw 12.1. The crossbar 12.2 is rotatably connected to an ear plate 12.3 on the outer wall of the feeding tank 1. The ear plate 12.3 is welded to the outer wall of the feeding tank 1. A nut 12.4 is threaded onto the screw 12.1, and the corresponding bracket 10 has a notch 12.5. The screw 12.1 is vertically inserted into the notch 12.5, and the nut 12.4 is frictionally locked to the lower end face of the rod of the bracket 10.

[0028] When disassembly is required, rotate screw 12.1 outward and upward. After screw 12.1 disengages from notch 12.5 of bracket 10, the feed tank 1 can be lifted upward.

[0029] Preferably, the connecting assembly 12 is installed at the conical portion of the feeding tank 1. A plurality of limiting frames 13 are formed on the upper part of the bracket 10. When the conical portion of the feeding tank 1 contacts and is supported by the limiting frames 13, the ear plate 12.3 is located above and close to the limiting frames 13. When hoisting the feeding tank 1, quick installation can be achieved by aligning the rotating screw 12.1 with the notch 12.5.

[0030] Preferably, a dust collection chamber 14 is provided between the dust removal branch pipe 8 and the mounting plate 7. The dust collection chamber 14 is a chamber with a narrowed upper end and a widened lower end, which can increase the dust collection area and remove as much dust as possible.

[0031] Preferably, a lower pressure plate 15 is connected to the tail end of the mounting plate 7, and the other end of the lower pressure plate 15 is inclined downwards towards the bottom plate of the discharge chute 6. The inclination angle of the lower pressure plate 15 is greater than the inclination angle of the discharge chute 6. This reduces the outlet size of the discharge chute 6, lowers the discharge speed, and makes dust removal more thorough.

Claims

1. A plastic medical waste color selection and feeding device, characterized in that: Includes a bracket (10), on which a feeding tank (1) is detachably installed. A wind conveying pipe (2) is installed at the top of the feeding tank (1). A fan sends plastic fragments into the feeding tank (1) through the wind conveying pipe (2). The lower end of the feeding tank (1) is sealed and connected to the feeding chamber (4) through the discharge port (3) and kept in communication. A discharge chamber (5) is installed at the bottom of the feeding chamber (4). A discharge chute (6) is provided at the opening on one side of the discharge chamber (5). An installation plate (7) is fixed at the upper end of the discharge chute (6). Multiple dust removal branch pipes (8) are provided on the installation plate (7). The lower end of the multiple dust removal branch pipes (8) is connected to the inside of the discharge chute (6), and the other end is connected to the dust removal main pipe (9). The dust removal main pipe (9) is connected to the bag filter.

2. The plastic medical waste color selection and feeding device according to claim 1, characterized in that: The output end of the air conveying pipe (2) is tangentially connected to the side wall of the feeding tank (1) and remains in communication.

3. The plastic medical waste color selection and feeding device according to claim 2, characterized in that: The bottom end of the discharge chamber (5) is fixed to the bracket (10) by a support rod (11).

4. The plastic medical waste color selection and feeding device according to claim 3, characterized in that: The support rod (11) includes an upper threaded sleeve welded to the discharge chamber (5) and a lower threaded sleeve welded to the bracket (10). The upper and lower threaded sleeves rotate in opposite directions and are threadedly connected to the screw.

5. The plastic medical waste color selection and feeding device according to claim 4, characterized in that: The bracket (10) is provided with a limiting frame (13) on the upper part, and the limiting frame (13) provides limiting support for the conical part of the feeding tank (1).

6. The plastic medical waste color selection and feeding device according to claim 5, characterized in that: The outer wall of the feeding tank (1) is detachably connected to the bracket (10) via a connecting assembly (12).

7. The plastic medical waste color selection and feeding device according to claim 6, characterized in that: The connecting assembly (12) includes a screw (12.1), the upper end of which is hinged to the outer wall of the feed tank (1); a nut (12.4) is threadedly connected to the lower part of the screw (12.1), and the corresponding bracket (10) has a notch (12.5). The screw (12.1) enters the notch (12.5), and the nut (12.4) is rubbed and locked with the end face of the bracket (10).

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