Plastic particle melting device

Abstract

The utility model discloses a plastic particle melting device which comprises a melting box, the top of the melting box is fixedly provided with an exhaust fan, the exhaust end of the exhaust fan is fixedly communicated with a purification mechanism used for purifying harmful gas in the melting box, the top of the melting box is fixedly communicated with a feeding hopper, and the feeding hopper is fixedly communicated with a feeding hopper. The top of the melting box is further provided with a blocking mechanism used for controlling opening and closing of the feeding hopper, and a grinding mechanism used for grinding plastic particles is arranged in the melting box. Harmful gas in the melting box is sucked into the purifying box from the melting box through the exhaust pipe by suction force generated by the exhaust fan, the harmful gas is adsorbed and purified through the activated carbon adsorption plate, meanwhile, the gas in the melting box is sucked out, and the inside of the melting box is in a negative pressure state; therefore, the harmful gas is prevented from flowing out of the feeding hopper under the condition that the feeding hopper is opened, and the harm to the surrounding environment and the health of workers is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to plastic particle melting device technical field especially relates to a kind of plastic particle melting device. BACKGROUND

[0002] Plastic particles refer to granular plastics, generally divided into more than 200, subdivided into thousands of kinds. Common plastic particles include general-purpose plastics, engineering plastics and special plastics. General-purpose plastics: polypropylene, polyethylene, polyvinyl chloride, polystyrene, polyester, polyurethane, etc. Engineering plastics: nylon, polytetrafluoroethylene, polyformaldehyde, polycarbon organic silicon, etc. Special plastics: thermosetting plastics, functional high-molecular plastics, such as artificial kidney. During the processing of plastic particles, plastic particles need to be melted to change from solid to molten state.

[0003] As the Chinese patent with application number 202222969887.8 discloses a plastic particle melting device, which includes a heating internal support fixedly connected to the main support, a rotating rod installed inside the heating internal support, the rotating rod is rotatably connected to the main support and the heating internal support through bearings, and stirring rods are installed on both sides of the rotating rod and welded to the rotating rod. This device can quickly stir the plastic particles inside the device through the installation of stirring rods, ensuring uniform heating of the plastic particles and guaranteeing the melting effect of the plastic particles. The installation of the crushing and differentiation cutter can quickly crush the plastic particles, making the plastic particles smaller and more convenient for rapid melting, enhancing the use effect of the device. The device does not need to wait for the plastic particles to change from large to small and slowly melt, shortening the melting time and improving production efficiency. The installation of the pressure relief valve can discharge high-pressure air inside the device, enhancing the safety of the device.

[0004] The above-mentioned patent will produce a large amount of harmful gas when melting plastic particles at high temperature, and the above-mentioned patent lacks a harmful gas filtering mechanism. The pressure relief valve will carry a large amount of harmful gas when discharging high-pressure air from the device, thereby polluting the working environment and affecting the physical and mental health of workers. UTILITY MODEL CONTENTS

[0005] The utility model aims to solve the shortcomings in the prior art and provides a plastic particle melting device.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a kind of plastic particle melting device, including melting tank, the top of the melting tank is fixedly installed with suction fan, the suction end of the suction fan is fixedly communicated with the purification mechanism for purifying harmful gas in melting tank, the top of the melting tank is fixedly communicated with feeding hopper, and the top of the melting tank is also provided with the plugging mechanism for controlling the opening and closing of feeding hopper, the grinding mechanism for grinding plastic particles is arranged in the melting tank, and the stirring mechanism for stirring plastic particles is arranged in the melting tank.

[0007] As further description of the above technical solution:

[0008] The guiding hopper is arranged in the melting tank and above the grinding mechanism, and the pressure relief valve is fixedly installed on the top of the melting tank, so that the pressure can be released when the pressure in the melting tank is too high.

[0009] As further description of the above technical solution:

[0010] The plugging mechanism includes rotating shaft one and support frame, the rotating shaft one is coaxially fixedly connected with the output end of suction fan, and the one end of the rotating shaft one away from suction fan is fixedly connected with gear one, the support frame is fixedly installed on the top of the melting tank, the inner wall of the support frame is slidably connected with rack, one end of the rack is fixedly connected with movable plate, the other end of the rack is fixedly connected with spring, and the other end of the spring is fixedly connected with the support frame, the rack and gear one are engaged, and the feeding hopper can be closed by the plugging mechanism, so that harmful gas is not discharged from the feeding hopper during the heating and melting process of plastic particles in the melting tank after feeding is completed.

[0011] As further description of the above technical solution:

[0012] The movable plate is movably inserted in the interior of the feeding hopper, for plugging the feeding hopper, the side wall of the movable plate is embedded with sealing strip, and is interference fit with the feeding hopper, the sealing property of the connecting portion between the movable plate and the feeding hopper can be improved by the sealing strip, so that harmful gas is not leaked from the connecting portion between the movable plate and the feeding hopper in the closed state of the feeding hopper.

[0013] As further description of the above technical solution:

[0014] The purification mechanism includes an air exhaust pipe, two ends of the air exhaust pipe are fixedly communicated with a melting box and an air exhaust end of an air exhaust machine respectively, a purification box is fixedly communicated on the air exhaust pipe, an electromagnetic valve is arranged on the air exhaust pipe and located between the purification box and the melting box, an exhaust passage is fixedly communicated on the air exhaust pipe, and the other end of the exhaust passage is covered outside a pressure relief valve, and an activated carbon adsorption plate is arranged in the purification box.

[0015] As a further description of the above technical solutions:

[0016] The grinding mechanism includes two rotating shafts two and a driving motor, the two rotating shafts two are rotatably installed between the front surface and the back surface of the inner wall of the melting box, the outer surfaces of the two rotating shafts two are fixedly sleeved with grinding rollers, the driving motor is fixedly installed on the back surface of the melting box, the output end of the driving motor is fixedly connected with one of the rotating shafts two in a same axis, and one end of each of the two rotating shafts two is fixedly connected with a gear two, and the outer surfaces of the two gears two are arranged in engagement.

[0017] As a further description of the above technical solutions:

[0018] The stirring mechanism includes a chain wheel one and a stirring rod, the chain wheel one is fixedly installed at one end of one of the rotating shafts two, the stirring rod is rotatably installed between the front surface and the back surface of the inner wall of the melting box, one end of the stirring rod is fixedly connected with a chain wheel two, and a chain is in transmission connection between the chain wheel one and the chain wheel two.

[0019] As a further description of the above technical solutions:

[0020] The melting box is internally provided with an electric heating wire for heating and melting the plastic particles in the melting box, a discharge port is formed in the bottom of the melting box, and an electromagnetic valve is arranged on the discharge port (the position in the figure), so that the plastic after melting can be conveyed to an injection molding device or other next process equipment for production and processing of plastic products.

[0021] The utility model has the advantages of the following beneficial effects:

[0022] 1. Compared with the prior art, the plastic particle melting device, harmful gas in the melting box is sucked from the melting box to the purification box through the suction pipe by the suction force generated by the suction fan, and the harmful gas is adsorbed and purified by the activated carbon adsorption plate, while the gas in the melting box is sucked out, and the inside is in a negative pressure state, so that harmful gas is prevented from flowing out of the feeding hopper and causing harm to the surrounding environment and the health of workers when the feeding hopper is opened.

[0023] 2. Compared with the prior art, the plastic particle melting device, high-pressure gas in the melting box is discharged through the pressure relief valve, and at the same time, the gas is transported to the purification box through the exhaust channel to filter the harmful gas, realizing the release of pressure under the high-temperature state of the melting box and filtering the harmful gas carried in the high-pressure gas released by the pressure relief valve, reducing the pollution to the working environment and protecting the physical and mental health of workers. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a whole structure perspective view of a plastic particle melting device according to the present application;

[0025] Figure 2 It is a drive motor and gear one structure perspective view of a plastic particle melting device according to the present application;

[0026] Figure 3 It is a melting box sectional view of a plastic particle melting device according to the present application;

[0027] Figure 4 It is a grinding roller and stirring rod structure perspective view of a plastic particle melting device according to the present application;

[0028] Figure 5 It is a spring and movable plate structure perspective view of a plastic particle melting device according to the present application.

[0029] LEGEND:

[0030] 1. Melting box; 2. Suction fan; 3. Feeding hopper; 4. Guide hopper; 5. Pressure relief valve; 6. Rotation shaft one; 7. Support frame; 8. Gear one; 9. Rack; 10. Movable plate; 11. Spring; 12. Suction pipe; 13. Purification box; 14. Solenoid valve; 15. Exhaust channel; 16. Activated carbon adsorption plate; 17. Rotation shaft two; 18. Drive motor; 19. Grinding roller; 20. Gear two; 21. Chain wheel one; 22. Stirring rod; 23. Chain wheel two; 24. Chain; 25. Electric heating wire; 26. Discharge port. DETAILED DESCRIPTION

[0031] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0032] With reference to Figures 1-5 The utility model provides a kind of plastic particle melting device provided in the utility model: including melting tank 1, the top of melting tank 1 is fixedly installed with suction fan 2, suction end of suction fan 2 is fixedly connected with the purification mechanism for purifying harmful gas in melting tank 1, the top of melting tank 1 is fixedly connected with feeding hopper 3, and the top of melting tank 1 is also provided with the plugging mechanism for controlling the opening and closing of feeding hopper 3, grinding mechanism for grinding plastic particles is arranged in melting tank 1, stirring mechanism for stirring plastic particles is arranged in melting tank 1, guide hopper 4 is arranged in the inside of melting tank 1 and above grinding mechanism, electric heating wire 25 is arranged in the inside of melting tank 1, and discharge port 26 is formed in the bottom of melting tank 1.

[0033] The plugging mechanism includes rotating shaft one 6 and support frame 7, rotating shaft one 6 is coaxially fixedly connected with the output end of suction fan 2, and the end, away from suction fan 2, of rotating shaft one 6 is fixedly connected with gear one 8, support frame 7 is fixedly installed on the top of melting tank 1, the inner wall of support frame 7 is slidably connected with rack 9, one end of rack 9 is fixedly connected with movable plate 10, the other end of rack 9 is fixedly connected with spring 11, and the other end of spring 11 is fixedly connected with support frame 7, rack 9 and gear one 8 are engaged, movable plate 10 is movably inserted in the inside of feeding hopper 3, for plugging feeding hopper 3, the purification mechanism includes suction pipe 12, the two ends of suction pipe 12 are fixedly communicated with melting tank 1 and suction end of suction fan 2, and purification tank 13 is fixedly communicated on suction pipe 12, electromagnetic valve 14 is arranged on suction pipe 12 and between purification tank 13 and melting tank 1, and active carbon adsorption plate 16 is arranged in the inside of purification tank 13;

[0034] The suction force generated by suction fan 2 draws the harmful gas in melting tank 1 from melting tank 1 to purification tank 13 through suction pipe 12, and the harmful gas is adsorbed and purified by active carbon adsorption plate 16, while the gas in melting tank 1 is drawn out, and the inside is in a negative pressure state, so that the harmful gas does not flow out from feeding hopper 3 when feeding hopper 3 is opened, and the surrounding environment and the health of workers are not harmed.

[0035] The top of melting tank 1 is fixedly installed with pressure relief valve 5, exhaust passage 15 is fixedly communicated on suction pipe 12, and the other end of exhaust passage 15 is covered outside pressure relief valve 5;

[0036] Through the pressure relief valve 5, the high pressure gas in the melting tank 1 is discharged, at the same time, through the exhaust passage 15, the gas is transported to the purification tank 13, and the harmful gas is filtered, which realizes the pressure relief of the melting tank 1 under high temperature, filters the harmful gas carried in the high pressure gas released by the pressure relief valve 5, reduces the pollution to the working environment, and protects the physical and mental health of the workers.

[0037] The grinding mechanism comprises two rotating shafts two 17 and a driving motor 18, the two rotating shafts two 17 are rotatably installed between the front surface and the back surface of the inner wall of the melting tank 1, the outer surfaces of the two rotating shafts two 17 are fixedly sleeved with grinding rollers 19, the driving motor 18 is fixedly installed on the back surface of the melting tank 1, and the output end of the driving motor 18 is coaxially fixedly connected with one of the rotating shafts two 17, one end of each of the two rotating shafts two 17 is fixedly connected with a gear two 20, and the outer surfaces of the two gear twos 20 are in meshing arrangement;

[0038] The two grinding rollers 19 are driven by the driving motor 18 to rotate oppositely in the melting tank 1, so that the plastic particles are ground to reduce the volume of monomers, thereby improving the efficiency of subsequent heating and melting.

[0039] The stirring mechanism comprises a chain wheel one 21 and a stirring rod 22, the chain wheel one 21 is fixedly installed at one end of one of the rotating shafts two 17, the stirring rod 22 is rotatably installed between the front surface and the back surface of the inner wall of the melting tank 1, one end of the stirring rod 22 is fixedly connected with a chain wheel two 23, and the chain wheel one 21 and the chain wheel two 23 are in transmission connection through a chain 24;

[0040] Through the rotation of the chain wheel one 21, the chain 24 transmits kinetic energy to the chain wheel two 23, and then drives the stirring rod 22 to rotate, so that the plastic particles in the melting tank 1 are stirred, and the plastic particles are uniformly heated during the melting process, thereby improving the melting efficiency of the rapid melting process.

[0041] Working principle: in the initial state, the spring 11 is in the compressed state, the spring 11 abuts against the rack 9 to push the movable plate 10 at the other end of the rack 9, and the sealing plug is inserted in the feeding hopper 3;

[0042] When the plastic particles need to be melted, the electromagnetic valve 14, the air extractor 2 and the electric heating wire 25 are turned on. The electric heating wire 25 preheats the melting box 1 first. At the same time, the output end of the air extractor 2 drives the rotating shaft one 6 and the gear one 8 to rotate. The gear one 8 drives the rack 9 to slide on the inner wall of the support frame 7 and drives the movable plate 10 to move away from the one end of the feeding hopper 3. The rack 9 extrudes the spring 11 to be in the compressed state and store energy. Until the movable plate 10 moves out of the feeding hopper 3, the feeding hopper 3 is opened. The plastic particles to be processed are put into the melting box 1. In this process, the suction force generated by the air extractor 2 extracts the harmful gas in the melting box 1 from the melting box 1 through the air extraction pipe 12 to the purification box 13. The harmful gas is adsorbed and purified by the activated carbon adsorption plate 16. At the same time, the gas in the melting box 1 is extracted, and the inside is in a negative pressure state, so as to avoid the harmful gas from flowing out of the feeding hopper 3 when the feeding hopper 3 is opened, which causes harm to the surrounding environment and the health of the workers.

[0043] At the same time of adding the plastic particles into the melting box 1, the driving motor 18 is started. The output end coaxially connected rotating shaft two 17 starts to rotate. Under the transmission of the two meshing gears one 8, the other rotating shaft two 17 is driven to rotate, so that the two grinding rollers 19 rotate oppositely in the melting box 1 to grind the plastic particles to be processed. The rotating shaft two 17 drives the chain wheel one 21 to rotate, and transmits the kinetic energy to the chain wheel two 23 through the chain 24, and then drives the stirring rod 22 to rotate, so as to stir the plastic particles in the melting box 1. The plastic particles are ground to reduce the monomer volume, and the plastic particles are stirred to facilitate the rapid heating and melting of the plastic particles by the electric heating wire 25.

[0044] After the feeding is completed, the air extractor 2 and the electromagnetic valve 14 are turned off. The rack 9 and the movable plate 10 are pushed to move by the elastic force of the spring 11 until the movable plate 10 is completely embedded in the feeding hopper 3 to close the feeding hopper 3.

[0045] During the heating process, the high temperature in the melting box 1 causes the pressure to be too high. The high pressure gas in the melting box 1 is discharged through the pressure relief valve 5. At the same time, the gas is transported to the purification box 13 through the exhaust passage 15 to filter the harmful gas. The filtered gas is discharged from the air extractor 2. In this process, the rack 9 and the gear one 8 are limited by the elastic force of the spring 11, so as to limit the movable plate 10. The phenomenon that the movable plate 10 exits the feeding hopper 3 due to the gas discharged from the air extractor 2 is avoided.

[0046] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A plastic particle melting apparatus comprising a melting tank (1), characterized in that: The top of the melting tank (1) is fixedly installed with an air extractor (2), the air extraction end of the air extractor (2) is fixedly communicated with a purification mechanism for purifying harmful gas in the melting tank (1), the top of the melting tank (1) is fixedly communicated with a feeding hopper (3), and the top of the melting tank (1) is further provided with a blocking mechanism for controlling the opening and closing of the feeding hopper (3), the melting tank (1) is provided with a grinding mechanism for grinding plastic particles, and the melting tank (1) is provided with a stirring mechanism for stirring the plastic particles.

2. The plastic pellet melting device according to claim 1, wherein: The inside of the melting tank (1) and above the grinding mechanism is provided with a guide hopper (4), and the top of the melting tank (1) is fixedly installed with a pressure relief valve (5).

3. The plastic pellet melting device of claim 1, wherein: The blocking mechanism comprises a rotating shaft (6) and a support frame (7), the rotating shaft (6) is coaxially fixedly connected with the output end of the air extractor (2), one end of the rotating shaft (6) away from the air extractor (2) is fixedly connected with a gear (8), the support frame (7) is fixedly installed on the top of the melting tank (1), the inner wall of the support frame (7) is slidably connected with a rack (9), one end of the rack (9) is fixedly connected with a movable plate (10), the other end of the rack (9) is fixedly connected with a spring (11), and the other end of the spring (11) is fixedly connected with the support frame (7), and the rack (9) and the gear (8) are engaged.

4. The plastic pellet melting apparatus according to claim 3, wherein: The movable plate (10) is movably inserted into the inside of the feeding hopper (3) for blocking the feeding hopper (3).

5. The plastic pellet melting apparatus of claim 1, wherein: The purification mechanism comprises an air extraction pipe (12), both ends of the air extraction pipe (12) are fixedly communicated with the melting tank (1) and the air extraction end of the air extractor (2), respectively, and a purification tank (13) is fixedly communicated on the air extraction pipe (12), an electromagnetic valve (14) is arranged on the air extraction pipe (12) between the purification tank (13) and the melting tank (1), an exhaust passage (15) is fixedly communicated on the air extraction pipe (12), the other end of the exhaust passage (15) is covered on the outside of the pressure relief valve (5), and the inside of the purification tank (13) is provided with an activated carbon adsorption plate (16).

6. The plastic pellet melting apparatus of claim 1, wherein: The grinding mechanism comprises two rotating shafts (17) and a driving motor (18), both of the rotating shafts (17) are rotatably installed between the front surface and the back surface of the inner wall of the melting tank (1), the outer surfaces of both of the rotating shafts (17) are fixedly sleeved with grinding rollers (19), the driving motor (18) is fixedly installed on the back surface of the melting tank (1), the output end of the driving motor (18) is coaxially fixedly connected with one of the rotating shafts (17), and one end of each of the rotating shafts (17) is fixedly connected with a gear (20), and the outer surfaces of the two gears (20) are engaged.

7. The plastic pellet melting apparatus of claim 1, wherein: Said stirring mechanism includes a chain wheel one (21) and a stirring rod (22), one end of the chain wheel one (21) is fixedly installed on one of the rotating shaft two (17), the stirring rod (22) is rotatably installed between the front and back of the inner wall of the melting tank (1), one end of the stirring rod (22) is fixedly connected with a chain wheel two (23), the chain wheel one (21) and the chain wheel two (23) are drivingly connected with a chain (24).

8. The plastic pellet melting apparatus of claim 1, wherein: The inside of the melting tank (1) is provided with an electric heating wire (25), and the bottom of the melting tank (1) is provided with a discharge port (26).

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