Polyethylene pipe recovery device for municipal water supply system

Abstract

The polyethylene pipe recovery device comprises a recovery tank, a crushing part and a stirring part, a heating ring is arranged on the outer side of the recovery tank in a surrounding mode, a feeding port is formed in the top of the recovery tank, a discharging port is formed in the bottom of the recovery tank, the crushing part is arranged on the top of the recovery tank, and the stirring part is arranged on the top of the recovery tank. The stirring part is arranged in the recycling tank and is provided with a stirring roller which is vertically and rotatably arranged in the recycling tank, a transmission bevel gear is arranged at the top of the stirring roller, a supporting frame is arranged at the top of the recycling tank, a curved bar is transversely and rotatably arranged in the supporting frame, and the curved bar is in meshed connection with the transmission bevel gear; and a cleaning frame is vertically arranged in the recovery tank in a sliding manner. By arranging the stirring part, the cleaning frame can be driven to move up and down in the recycling tank in a reciprocating manner while the curved bar rotates to drive the stirring roller to rotate in the recycling tank, so that molten polyethylene adhered to the inner wall of the recycling tank is scraped off.

Description

Technical Field

[0001] This utility model relates to the field of polyethylene pipe recycling technology, specifically a polyethylene pipe recycling device for municipal water supply systems. Background Technology

[0002] Municipal water supply systems refer to water supply systems that provide drinking water, domestic water, and industrial water to cities and towns, and are an important component of urban infrastructure. They typically consist of water sources, water treatment plants, water pipelines, distribution networks, and users. Municipal water supply systems usually use polyethylene pipes, which are pipes polymerized from ethylene monomers. These plastic pipes are widely used for water supply and gas pipelines. Plastic pipes should not only be economical but also possess a series of advantages such as stable and reliable joints, impact resistance, crack resistance, aging resistance, and corrosion resistance. To avoid waste of raw materials, used polyethylene plastic pipes are usually recycled.

[0003] In the process of recycling polyethylene pipes used in municipal water supply systems, the polyethylene pipes need to be crushed into smaller fragments by crushing rollers. The crushed PE fragments are then fed into heating equipment to soften and melt them at high temperatures (usually 130°C to 180°C). The molten PE material is then extruded or injection molded to form a uniform melt, which is convenient for subsequent processing. However, in existing polyethylene pipe recycling devices for municipal water supply systems, the molten polyethylene material tends to adhere to the inner wall of the equipment when heating the polyethylene pipes, resulting in poor material discharge and affecting the overall recycling efficiency and processing quality. Utility Model Content

[0004] The purpose of this utility model is to provide a polyethylene pipe recycling device for municipal water supply systems, in order to solve the problem mentioned in the background art, where the molten polyethylene material in existing polyethylene pipe recycling devices for municipal water supply systems tends to adhere to the inner wall of the equipment when heating the polyethylene pipe, resulting in poor material discharge and affecting the overall recycling efficiency and processing quality.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a polyethylene pipe recycling device for municipal water supply systems, comprising a recycling tank, a crushing section, and a mixing section:

[0006] The recycling tank is surrounded by a heating coil. It has an inlet at the top and an outlet at the bottom. A crushing section is located at the top of the tank, containing a hopper with a horizontally rotating crushing wheel inside. A motor (motor a) is bolted to the side of the hopper, and its output is connected to the crushing wheel. An agitator is located inside the tank, containing a vertically rotating agitator roller with a drive bevel gear at its top. A support frame is located at the top of the tank, with a horizontally rotating crank rod inside, meshing with the drive bevel gear. A cleaning frame is vertically slidably installed inside the tank, its top slidably connected to the crank rod. The crank rod's rotation drives the agitator roller and, in turn, causes the cleaning frame to slide up and down.

[0007] By adopting the above technical solution, while the crank shaft rotates and drives the stirring roller to rotate inside the recycling tank, it can also drive the cleaning frame to move up and down repeatedly inside the recycling tank, thereby scraping off the molten polyethylene that is stuck to the inner wall of the recycling tank.

[0008] Preferably, the bottom of the hopper is connected to the inlet at the top of the recycling tank, and the crushing wheel is provided in two sets, which are mirror-symmetrical and rotate in opposite directions.

[0009] By adopting the above technical solution, the polyethylene pipe can be recycled and crushed into smaller fragments through the rotation of two crushing wheels.

[0010] Preferably, the stirring part also has several blades disposed on the side of the stirring roller, and the several blades have an inclined angle.

[0011] By adopting the above technical solution, the melting polyethylene pipe can be stirred, thereby improving the melting efficiency of the polyethylene pipe.

[0012] Preferably, the stirring part also has a driving bevel tooth disposed on the side of the crank, which meshes with the transmission bevel tooth.

[0013] By adopting the above technical solution, the rotation of the crank can drive the transmission bevel gear to rotate.

[0014] Preferably, both ends of the crank are embedded in the support frame and rotatably connected to the support frame. A motor b is fixed to the side of the support frame by bolts, and the output end of the motor b is connected to the crank.

[0015] By adopting the above technical solution, the crank can be rotated by a motor.

[0016] Preferably, the cleaning rack has several cleaning rings arranged sequentially from top to bottom inside, and several of these cleaning rings abut against the inner wall of the recycling tank.

[0017] By adopting the above technical solution, the molten polyethylene adhering to the inner wall of the recycling tank can be scraped off by moving the cleaning rack.

[0018] Preferably, the cleaning rack is embedded inside the recycling tank and slidably connected to the recycling tank, with the top of the cleaning rack extending to the outside of the recycling tank.

[0019] By adopting the above technical solution, the cleaning rack can be moved up and down repeatedly inside the recycling tank.

[0020] Preferably, the stirring part also has a transmission groove formed on the top of the cleaning frame, and the crank is embedded in the transmission groove and slidably connected to the cleaning frame.

[0021] By adopting the above technical solution, the rotation of the crank can drive the cleaning frame to move up and down repeatedly inside the recycling tank.

[0022] Compared with the prior art, the beneficial effects of this utility model are: by providing a stirring part, while the crank rod rotates and drives the stirring roller to rotate inside the recycling tank, the crank rod will make a circular motion around the output axis of the motor b because the axis of the crank rod is offset from the rotation axis of the motor b, thereby driving the cleaning frame to move up and down repeatedly inside the recycling tank, thereby scraping off the molten polyethylene that is stuck to the inner wall of the recycling tank. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this application;

[0024] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this application;

[0025] Figure 3 This is a schematic diagram of the overall cross-sectional structure of this application;

[0026] Figure 4 This is a schematic diagram of the connection structure between the cleaning frame and the curved rod in this application;

[0027] Figure 5 This is a schematic diagram of the stirring roller structure of this application;

[0028] Figure 6 This is a schematic diagram of the curved rod structure of this application.

[0029] In the diagram: 1. Recycling tank; 101. Heating coil; 102. Feed inlet; 103. Discharge outlet; 2. Crushing section; 201. Hopper; 202. Crushing wheel; 203. Motor a; 3. Mixing section; 301. Mixing roller; 302. Blade; 303. Transmission bevel gear; 304. Support frame; 305. Crank rod; 306. Drive bevel gear; 307. Motor b; 308. Cleaning frame; 309. Cleaning ring; 310. Transmission groove. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Example 1

[0032] Please see Figure 1 , Figure 2 and Figure 3 This embodiment provides a technical solution: a polyethylene pipe recycling device for municipal water supply systems, comprising a recycling tank 1, a crushing section 2, and a mixing section 3.

[0033] A heating coil 101 is arranged around the outside of the recycling tank 1. A heating element is embedded in the heating coil 101 to heat the polyethylene inside the recycling tank 1 and melt it. Correspondingly, a temperature sensor is installed inside the recycling tank 1 to monitor the temperature inside the recycling tank 1 in real time to avoid melting caused by overheating or underheating. The temperature sensor and the heating coil 101 are jointly controlled by the control panel. When the temperature is too high, the control panel controls the heating coil 101 to cool down; when the temperature is too low, the control panel controls the heating coil 101 to heat up. The working principle of the temperature sensor is as follows: Thermistor changes with temperature: Thermistor is a semiconductor material whose resistance value changes significantly with temperature, and usually exhibits a non-linear relationship. Measurement method: The temperature is calculated by measuring the change in resistance value and using the known resistance-temperature curve. This is existing technology and will not be elaborated further. The top of the recycling tank 1 has an inlet 102, and the bottom has an outlet 103. Both the inlet 102 and outlet 103 are equipped with solenoid valves to control flow. The crushing unit 2 is located on the top of the recycling tank 1. A hopper 201 is bolted to the top of the recycling tank 1. A crushing wheel 202 is horizontally rotatable inside the hopper 201. A motor a203 is bolted to the side of the hopper 201, and the output of the motor a203 is connected to the crushing wheel 202. The bottom of the hopper 201 is connected to the inlet 102 at the top of the recycling tank 1. Two sets of crushing wheels 202 are provided, with a mirror-symmetrical structure and opposite rotation directions. The two sets of crushing wheels 202 can be used to control the flow of the material. The rotating mechanism can break down polyethylene pipes into smaller fragments. The stirring unit 3 is located inside the recycling tank 1. A stirring roller 301 is vertically rotating inside the recycling tank 1. A transmission bevel gear 303 is located on the top of the stirring roller 301. A support frame 304 is located on the top of the recycling tank 1. A crank rod 305 is horizontally rotating inside the support frame 304. The crank rod 305 is meshed with the transmission bevel gear 303. A cleaning frame 308 is vertically sliding inside the recycling tank 1. The top of the cleaning frame 308 is slidably connected to the crank rod 305. The rotation of the crank rod 305 drives the stirring roller 301 to rotate. The rotation of the crank rod 305 also drives the cleaning frame 308 to slide up and down inside the recycling tank 1. While the crank rod 305 rotates and drives the stirring roller 301 to rotate inside the recycling tank 1, it can also drive the cleaning frame 308 to move up and down back and forth inside the recycling tank 1, thereby scraping off the molten polyethylene that is stuck to the inner wall of the recycling tank 1.

[0034] Example 2

[0035] Please see Figure 4 , Figure 5 and Figure 6 This embodiment provides a technical solution: a polyethylene pipe recycling device for municipal water supply systems, comprising a stirring section 3, a stirring roller 301, a curved rod 305, and a cleaning frame 308.

[0036] Several blades 302 are welded and fixed to the side of the stirring roller 301. These blades 302 have an inclined angle to stir the melting polyethylene pipe, improving its melting efficiency. A drive bevel gear 306 is welded to the side of the crank rod 305. The rotation axis of the drive bevel gear 306 is not on the same straight line as the crank rod 305. The drive bevel gear 306 meshes with a transmission bevel gear 303, allowing the transmission bevel gear 303 to rotate through the rotation of the crank rod 305. Both ends of the crank rod 305 are embedded in and rotatably connected to the support frame 304. A motor b307 is bolted to the side of the support frame 304. The output end of the motor b307 is connected to the crank rod 305, allowing the motor to drive... The crank 305 rotates, and several cleaning rings 309 are arranged sequentially from top to bottom inside the cleaning frame 308. The cleaning rings 309 abut against the inner wall of the recycling tank 1. By moving the cleaning frame 308, the molten polyethylene adhering to the inner wall of the recycling tank 1 can be scraped off. The cleaning frame 308 is embedded inside the recycling tank 1 and is slidably connected to the recycling tank 1. The top of the cleaning frame 308 extends to the outside of the recycling tank 1, allowing the cleaning frame 308 to move back and forth up and down inside the recycling tank 1. A transmission groove 310 is provided on the top of the cleaning frame 308, and the crank 305 is embedded in the transmission groove 310 and slidably connected to the cleaning frame 308. By rotating the crank 305, the cleaning frame 308 can be driven to move back and forth up and down inside the recycling tank 1.

[0037] Working principle: First, the device is powered on. Then, the polyethylene pipe is introduced into the hopper 201. Through the rotation of the two crushing wheels 202, the polyethylene pipe can be recycled and crushed into smaller fragments. Then, the polyethylene pipe fragments enter the recycling tank 1 through the feed port 102. The heating coil 101 is equipped with a heating tube that can heat the polyethylene in the recycling tank 1 to melt it. At the same time, the motor b307 drives the crank 305 to rotate in the support frame 304. As the crank 305 drives the stirring roller 301 to rotate in the recycling tank 1, the crank 305's axis is offset from the rotation axis of the motor b307, causing the crank 305 to rotate around the output axis of the motor b307. This drives the cleaning frame 308 to move up and down repeatedly inside the recycling tank 1, thereby scraping off the molten polyethylene adhering to the inner wall of the recycling tank 1.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A polyethylene pipe recycling device for municipal water supply systems, characterized in that, include: The recycling tank is surrounded by a heating coil, has an inlet at the top and an outlet at the bottom. The crushing section is located at the top of the recycling tank. The crushing section has a hopper located at the top of the recycling tank. A crushing wheel is horizontally rotatably installed inside the hopper. A motor a is fixed to the side of the hopper by bolts. The output end of the motor a is connected to the crushing wheel. The mixing section is located inside the recycling tank. The mixing section has a vertically rotating mixing roller inside the recycling tank. The top of the mixing roller is provided with a drive bevel gear. The top of the recycling tank is provided with a support frame. The inside of the support frame is a horizontally rotating crank rod that meshes with the drive bevel gear. The inside of the recycling tank is a vertically sliding cleaning frame. The top of the cleaning frame is slidably connected to the crank rod. The rotation of the crank rod drives the mixing roller to rotate, and the rotation of the crank rod drives the cleaning frame to slide up and down.

2. The polyethylene pipe recycling device for municipal water supply systems according to claim 1, characterized in that: The bottom of the hopper is connected to the inlet at the top of the recycling tank. There are two sets of crushing wheels, which are mirror-symmetrical and rotate in opposite directions.

3. A polyethylene pipe recycling device for a municipal water supply system according to claim 1, characterized in that: The stirring section also has several blades disposed on the side of the stirring roller, and several of these blades have an inclined angle.

4. A polyethylene pipe recycling device for a municipal water supply system according to claim 1, characterized in that: The stirring part also has a drive bevel gear disposed on the side of the crank, which meshes with the transmission bevel gear.

5. A polyethylene pipe recycling device for a municipal water supply system according to claim 1, characterized in that: The two ends of the crank are embedded in the support frame and rotatably connected to the support frame. The side of the support frame is fixed with a motor b by bolts, and the output end of the motor b is connected to the crank.

6. A polyethylene pipe recycling device for a municipal water supply system according to claim 1, characterized in that: The cleaning rack has several cleaning rings arranged from top to bottom inside, and several of these cleaning rings abut against the inner wall of the recycling tank.

7. A polyethylene pipe recycling device for a municipal water supply system according to claim 1, characterized in that: The cleaning rack is embedded inside the recycling tank and slides to the outside of the recycling tank, with the top of the cleaning rack extending to the outside of the recycling tank.

8. A polyethylene pipe recycling device for municipal water supply systems according to claim 1, characterized in that: The mixing unit also has a transmission groove formed on the top of the cleaning frame, and the crank is embedded in the transmission groove and slidably connected to the cleaning frame.

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