Hot melting regeneration device for polyurea waste

Abstract

The utility model provides a polyurea waste hot melting regeneration device, which relates to the technical field of polyurea waste hot melting, and comprises a stirring barrel, supporting legs and a motor, the outer side wall of the stirring barrel is fixedly connected with a shell, the supporting legs are fixedly connected to the bottom of the stirring barrel, the top of the stirring barrel is fixedly connected with a feed hopper, and the feed hopper is fixedly connected with the motor. The bottom of the stirring barrel is fixedly connected with a discharging hopper, the supporting legs are symmetrically distributed around the discharging hopper, the motor is fixedly connected to the top of the stirring barrel, and the motor is located at the position close to the feeding hopper. Molten polyurea is uniformly stirred through the stirring blades, materials attached to the inner wall of the stirring barrel are scraped by the scraping plates, accumulation is prevented, sufficient heating is ensured, the first inclined plate and the second inclined plate form a stepped progressive discharging system, polyurea liquid is guided to flow out stably, the flow speed is prevented from being too high, meanwhile, the exposed area is increased, and bubble escape is accelerated; therefore, the regeneration effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of polyurea waste hot-melt technology, and in particular to a polyurea waste hot-melt recycling device. Background Technology

[0002] Polyurea materials are widely used in waterproof coatings, industrial protection, and pipe linings due to their excellent wear resistance, corrosion resistance, and high strength. Hot melt recycling technology melts polyurea by heating it, replasticizing it into a usable state, and provides a feasible solution for the recycling of polyurea waste. Against this background, the polyurea hot melt recycling machine has emerged, aiming to improve the recycling efficiency by uniformly melting polyurea waste through reasonable heating and stirring methods.

[0003] In existing technologies, such as the "Recycled Plastic Hot Melting Device" in Chinese Patent CN116494426A, the present invention involves recycled plastic granules entering the hot melting box through a feeding funnel during operation. A stirring motor drives a stirring rod to rotate, ensuring that the plastic granules are heated evenly, thereby improving melting efficiency and quality. The smoke generated during the melting process is collected at the top of the hot melting box, and an exhaust fan transports the smoke to the exhaust pipe through a smoke nozzle and a smoke extraction pipe. The smoke is then purified by a smoke removal mechanism, reducing the impact on the environment.

[0004] However, in existing technologies, polyurea waste thermal melting recycling devices lack a structure that can draw the polyurea liquid adhering to the inner wall of the mixing tank into the center during the thermal melting process. This causes the molten polyurea to accumulate around the mixing tank, affecting the overall thermal melting efficiency and resulting in insufficient or uneven heating of some materials, thereby reducing the recycling quality. In addition, existing devices lack a stepped discharge guiding structure. Especially in the discharge stage, the molten polyurea liquid flows out directly, making it difficult to control the flow rate. This can easily lead to excessively fast discharge, liquid sloshing, or splashing, affecting production safety and efficiency. Furthermore, due to the lack of a stepped, progressive discharge system, there are more residual air bubbles inside the liquid polyurea, resulting in a decrease in the density of the final recycled material and affecting the recycling quality. Utility Model Content

[0005] The purpose of this invention is to address the problems of existing polyurea waste thermal melting recycling devices, which lack a structure to draw the polyurea liquid adhering to the inner wall of the mixing tank into the center, leading to material accumulation, uneven heating, and reduced recycling quality. Furthermore, the lack of a stepped discharge guiding system causes the molten polyurea to discharge too quickly, easily shake or splash, affecting safety. At the same time, the difficulty in escaping air bubbles leads to a decrease in material density, affecting the final recycling effect. Therefore, this invention proposes a polyurea waste thermal melting recycling device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a polyurea waste hot-melt recycling device, comprising a mixing tank, support legs and a motor, wherein an outer shell is fixedly connected to the outer wall of the mixing tank, the support legs are fixedly connected to the bottom of the mixing tank, a feed hopper is fixedly connected to the top of the mixing tank, a discharge hopper is fixedly connected to the bottom of the mixing tank, the support legs are symmetrically distributed around the discharge hopper, and the motor is fixedly connected to the top of the mixing tank, with the motor located near the feed hopper.

[0007] In a preferred embodiment, a transmission rod is fixedly connected inside the mixing tank, the transmission rod passes through the top of the mixing tank, the transmission rod is fixedly connected to the side of the motor near the mixing tank, and a rotating ring and a connecting ring are rotatably connected to the outer wall of the transmission rod.

[0008] The technical effect of adopting the above-mentioned further solution is that the design of the transmission rod ensures the direct transmission of motor power, thereby improving the stirring efficiency.

[0009] In a preferred embodiment, a stirring blade is fixedly connected to the outer wall of the rotating ring, the stirring blades are evenly distributed inside the mixing tank, the connecting ring is rotatably connected to the bottom of the inner wall of the mixing tank, a connecting rod is fixedly connected to the outer wall of the connecting ring, the connecting rod is symmetrically installed at the bottom of the inner wall of the mixing tank, and a scraper is fixedly connected to the end of the connecting rod away from the connecting ring, the scraper is rotatably connected to the inner wall of the mixing tank.

[0010] The technical effect of adopting the above-mentioned further solution is that, through the design of the stirring blades, the polyurea inside the stirring tank is stirred, thereby improving the heating uniformity of the polyurea waste and preventing uneven heating of local waste.

[0011] In a preferred embodiment, a heating wire is fixedly connected inside the outer shell, and the heating wire is fixedly connected to the outer wall of the mixing tank.

[0012] The technical advantage of adopting the above-mentioned further solution is that the heating wire design allows for direct heating of the mixing tank, thereby improving the heating and melting efficiency.

[0013] In a preferred embodiment, a sealing plate is rotatably connected to the top of the feed hopper via a hinge. A handle and an exhaust pipe are fixedly connected to the top of the sealing plate. The exhaust pipe is located near the center of the sealing plate. A filter element seat is threadedly connected to the end of the exhaust pipe away from the sealing plate. An activated carbon filter element is fixedly connected to the inner wall of the filter element seat. The activated carbon filter element is movably connected inside the exhaust pipe.

[0014] The technical effect of adopting the above-mentioned further solution is that the exhaust pipe design discharges the harmful gases generated during polyurea hot melting, the surface waste gas accumulates inside causing safety hazards, and the sealing plate achieves the sealing of the mixing tank to prevent waste gas from overflowing.

[0015] In a preferred embodiment, a baffle plate is slidably connected inside the mixing tank. The baffle plate is located near the discharge hopper, and a handle is fixedly connected to the bottom of the baffle plate. The handle is located near the outer wall of the mixing tank.

[0016] The technical effect of adopting the above-mentioned further solution is that, through the design of the baffle plate, the polyurea liquid can be blocked and controlled to flow into the discharge hopper at the appropriate time.

[0017] In a preferred embodiment, a first inclined plate and a second inclined plate are fixedly connected to the inner sidewall of the discharge hopper. The first inclined plate is located near the bottom of the baffle plate, and the second inclined plate is located near the bottom of the first inclined plate. A discharge ramp is fixedly connected to the inner sidewall of the discharge hopper near the bottom.

[0018] The technical effect of adopting the above-mentioned further solution is that by designing the first and second inclined plates, a stepped discharge system is realized, which increases the surface area of ​​polyurea liquid during the discharge process, thereby reducing internal bubbles and improving the regeneration effect.

[0019] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0020] When polyurea waste needs to be thermally recycled, open the feed hopper, pour the polyurea waste into the feed hopper and into the mixing tank. After all the waste has entered, close the sealing plate to ensure that the mixing tank and the feed hopper are sealed. Then, start the heating wire to heat the mixing tank and raise its internal temperature, causing the polyurea to gradually melt. At the same time, start the motor to drive the transmission rod to rotate, so that the rotating ring and the connecting ring rotate synchronously. The rotating ring drives the stirring blades to continuously stir the molten polyurea in the tank, ensuring that it is heated evenly and preventing local incomplete melting. In addition, the connecting ring drives the connecting rod to rotate, which in turn drives the scraper to continuously scrape off the polyurea waste adhering to the inner wall of the mixing tank and roll it towards the center to prevent material accumulation from affecting the thermal melting effect. The connecting rod adopts a triangular structure to prevent polyurea from accumulating at the top and ensure smooth discharge.

[0021] When toxic gases are generated during the hot melting process, the gas can only be discharged through the exhaust pipe because the sealing plate closes the mixing tank. It is then purified and adsorbed by the activated carbon filter. When replacing the filter, the filter holder can be rotated to remove it together with the old activated carbon filter. After replacing it with a brand new activated carbon filter, it can be re-fixed, which improves the filter replacement efficiency and enhances the safety of the device after long-term use.

[0022] When the molten polyurea needs to be discharged, the baffle plate is pulled out, allowing the liquid polyurea to flow into the discharge hopper. The polyurea remaining in the mixing tank is scraped and rolled into the discharge hopper by the rotation of the connecting rod and scraper. The polyurea liquid entering the discharge hopper first flows to the first inclined plate and then to the second inclined plate, forming a stepped progressive discharge system. This ensures smooth flow, prevents excessively fast discharge, increases the liquid exposure area, promotes bubble escape, reduces bubble residue, and improves the final regeneration effect. Attached Figure Description

[0023] Figure 1 This is a top view schematic diagram of the overall structure of a polyurea waste hot melt recycling device proposed in this utility model;

[0024] Figure 2 This is a bottom view schematic diagram of the overall structure of a polyurea waste hot melt recycling device proposed in this utility model;

[0025] Figure 3 This is a schematic cross-sectional view of the overall structure of a polyurea waste hot melt recycling device proposed in this utility model;

[0026] Figure 4 This is a schematic diagram of the mixing tank structure of a polyurea waste hot melt recycling device proposed in this utility model;

[0027] Figure 5 This is a schematic diagram of the feeding hopper structure of a polyurea waste hot melt recycling device proposed in this utility model;

[0028] Figure 6 This is a schematic diagram of the discharge hopper structure of a polyurea waste hot melt recycling device proposed in this utility model.

[0029] Legend:

[0030] 1. Mixing tank; 101. Drive rod; 102. Rotating ring; 103. Mixing blade; 104. Connecting ring; 105. Connecting rod; 106. Scraper; 2. Outer shell; 201. Heating wire; 3. Support foot; 4. Feed hopper; 401. Sealing plate; 402. Handle; 403. Exhaust pipe; 404. Activated carbon filter element; 405. Filter element seat; 5. Discharge hopper; 501. Baffle plate; 502. Handle; 503. First inclined plate; 504. Second inclined plate; 505. Discharge ramp; 6. Motor. Detailed Implementation

[0031] 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.

[0032] Please see Figures 1-6 This utility model provides a technical solution: a polyurea waste hot melt recycling device, including a mixing tank 1, support legs 3 and a motor 6. The outer wall of the mixing tank 1 is fixedly connected to the outer shell 2. The support legs 3 are fixedly connected to the bottom of the mixing tank 1. The top of the mixing tank 1 is fixedly connected to the feed hopper 4. The bottom of the mixing tank 1 is fixedly connected to the discharge hopper 5. The support legs 3 are symmetrically distributed around the discharge hopper 5. The motor 6 is fixedly connected to the top of the mixing tank 1 and is located near the feed hopper 4.

[0033] like Figures 1-6 As shown, a transmission rod 101 is fixedly connected inside the mixing tank 1. The transmission rod 101 passes through the top of the mixing tank 1 and is fixedly connected to the side of the motor 6 near the mixing tank 1. A rotating ring 102 and a connecting ring 104 are rotatably connected to the outer wall of the transmission rod 101.

[0034] like Figures 1-6 As shown, stirring blades 103 are fixedly connected to the outer wall of the rotating ring 102. The stirring blades 103 are distributed at equal angles inside the mixing tank 1. The connecting ring 104 is rotatably connected to the bottom of the inner wall of the mixing tank 1. A connecting rod 105 is fixedly connected to the outer wall of the connecting ring 104. The connecting rod 105 is symmetrically installed at the bottom of the inner wall of the mixing tank 1. A scraper 106 is fixedly connected to the end of the connecting rod 105 away from the connecting ring 104. The scraper 106 is rotatably connected to the inner wall of the mixing tank 1.

[0035] like Figures 1-6 As shown, a heating wire 201 is fixedly connected inside the outer shell 2, and the heating wire 201 is fixedly connected to the outer wall of the mixing tank 1.

[0036] like Figures 1-6 As shown, a sealing plate 401 is rotatably connected to the top of the feed hopper 4 via a hinge. A handle 402 and an exhaust pipe 403 are fixedly connected to the top of the sealing plate 401. The exhaust pipe 403 is located near the center of the sealing plate 401. A filter element seat 405 is threadedly connected to the end of the exhaust pipe 403 away from the sealing plate 401. An activated carbon filter element 404 is fixedly connected to the inner wall of the filter element seat 405. The activated carbon filter element 404 is movably connected inside the exhaust pipe 403.

[0037] like Figures 1-6 As shown, a baffle plate 501 is slidably connected inside the mixing tank 1. The baffle plate 501 is located near the discharge hopper 5. A handle 502 is fixedly connected to the bottom of the baffle plate 501. The handle 502 is located near the outer wall of the mixing tank 1.

[0038] like Figures 1-6As shown, a first inclined plate 503 and a second inclined plate 504 are fixedly connected to the inner wall of the discharge hopper 5. The first inclined plate 503 is located near the bottom of the baffle plate 501, and the second inclined plate 504 is located near the bottom of the first inclined plate 503. A discharge ramp 505 is fixedly connected to the inner wall of the discharge hopper 5 near the bottom.

[0039] The operating method and working principle of this device are as follows: When it is necessary to regenerate polyurea waste through hot melt, first, hold the handle 402 and pull the sealing plate 401 with external force to open the feed hopper 4 and pour the polyurea waste into the feed hopper 4. The waste enters the mixing tank 1 under the action of gravity. After all the waste has entered, close the sealing plate 401 to ensure that the mixing tank 1 and the feed hopper 4 are sealed. Then, start the heating wire 201 inside the outer shell 2 through the external power supply to heat the mixing tank 1 and raise its internal temperature, so that the polyurea gradually melts. At the same time, start the motor 6 through the external power supply to drive the transmission rod 101 to rotate. The rotating ring 102 and the connecting ring 104 rotate synchronously. The rotating ring 102 drives the stirring blades 103 to continuously stir the molten polyurea in the tank, ensuring uniform heating and preventing incomplete melting in certain areas. Furthermore, the connecting ring 104 drives the connecting rod 105 to rotate, which in turn drives the scraper 106 to continuously scrape off the polyurea waste adhering to the inner wall of the mixing tank 1 and roll it towards the center, preventing material accumulation from affecting the hot-melting effect. The connecting rod 105 has a triangular structure to prevent polyurea from accumulating at its top, ensuring smooth discharge. When toxic gases are generated during the hot-melting process, the sealing plate... In the sealed mixing tank 1 (401), gas can only be discharged through the exhaust pipe 403 and is purified and adsorbed by the activated carbon filter element 404. When replacing the filter element, the filter element seat 405 can be rotated to remove it together with the old activated carbon filter element 404. After replacing it with a brand new activated carbon filter element 404, it can be re-fixed. When it is necessary to discharge the molten polyurea, first, stop heating, and hold the handle 502 to pull out the baffle plate 501 by external force, so that the liquid polyurea flows into the discharge hopper 5 under the action of gravity. The polyurea remaining in the mixing tank 1 is discharged under the action of the rotation of the connecting rod 105 and the scraper 106. The polyurea liquid, continuously scraped and rolled into the discharge hopper 5, first flows to the first inclined plate 503, then to the second inclined plate 504, forming a stepped, progressive discharge system. This ensures smooth flow, prevents excessively fast discharge, increases the liquid exposure area, promotes bubble escape, and reduces bubble residue. Finally, the polyurea liquid flows along the discharge slope 505 into the external collection tank, completing the discharge process. The support foot 3 provides stable support to the mixing tank 1, ensuring reliable operation of the device and improving overall stability. The heating wire 201 and the motor 6 are existing technologies on the market and will not be described in detail here.

[0040] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A polyurea waste thermal regeneration device, characterized in that: The mixing tank (1), support legs (3) and motor (6) are included. The outer wall of the mixing tank (1) is fixedly connected to the outer shell (2). The support legs (3) are fixedly connected to the bottom of the mixing tank (1). The top of the mixing tank (1) is fixedly connected to the feed hopper (4). The bottom of the mixing tank (1) is fixedly connected to the discharge hopper (5). The support legs (3) are symmetrically distributed around the discharge hopper (5). The motor (6) is fixedly connected to the top of the mixing tank (1). The motor (6) is located near the feed hopper (4).

2. The polyurea waste thermal regeneration device according to claim 1, characterized in that: A transmission rod (101) is fixedly connected inside the mixing tank (1). The transmission rod (101) passes through the top of the mixing tank (1). The transmission rod (101) is fixedly connected to the side of the motor (6) near the mixing tank (1). A rotating ring (102) and a connecting ring (104) are rotatably connected to the outer wall of the transmission rod (101).

3. The polyurea waste thermal regeneration device according to claim 2, characterized in that: A stirring blade (103) is fixedly connected to the outer wall of the rotating ring (102). The stirring blade (103) is distributed at equal angles inside the stirring tank (1). The connecting ring (104) is rotatably connected to the bottom of the inner wall of the stirring tank (1). A connecting rod (105) is fixedly connected to the outer wall of the connecting ring (104). The connecting rod (105) is symmetrically installed at the bottom of the inner wall of the stirring tank (1). A scraper (106) is fixedly connected to the end of the connecting rod (105) away from the connecting ring (104). The scraper (106) is rotatably connected to the inner wall of the stirring tank (1).

4. The polyurea waste thermal regeneration device according to claim 1, characterized in that: A heating wire (201) is fixedly connected inside the outer shell (2), and the heating wire (201) is fixedly connected to the outer wall of the stirring tank (1).

5. The polyurea waste thermal regeneration device according to claim 1, characterized in that: The top of the feed hopper (4) is rotatably connected to a sealing plate (401) via a hinge. The top of the sealing plate (401) is fixedly connected to a handle (402) and an exhaust pipe (403). The exhaust pipe (403) is located near the center of the sealing plate (401). The end of the exhaust pipe (403) away from the sealing plate (401) is threadedly connected to a filter element seat (405). An activated carbon filter element (404) is fixedly connected to the inner side wall of the filter element seat (405). The activated carbon filter element (404) is movably connected inside the exhaust pipe (403).

6. The polyurea waste thermal regeneration device according to claim 1, characterized in that: The mixing tank (1) is slidably connected to a baffle plate (501), which is located near the discharge hopper (5). A handle (502) is fixedly connected to the bottom of the baffle plate (501), which is located near the outer wall of the mixing tank (1).

7. A polyurea waste thermal regeneration device according to claim 6, characterized in that: The inner wall of the discharge hopper (5) is fixedly connected with a first inclined plate (503) and a second inclined plate (504). The first inclined plate (503) is located near the bottom of the baffle plate (501), and the second inclined plate (504) is located near the bottom of the first inclined plate (503). The inner wall of the discharge hopper (5) is fixedly connected with a discharge ramp (505) near the bottom.

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