Environment-friendly plastic particle granulator

Abstract

The utility model discloses an environment-friendly plastic particle granulator which comprises a rack, the rack is sequentially provided with a raw material supply system, a plastic extrusion system, a drive control system and a granulation auxiliary system, and one side of the rack is further provided with a heat energy recovery waste gas treatment system. According to the plastic granulation equipment integrating heat recovery and waste gas treatment, after high-temperature harmful gas is connected with a waste gas input connector through a waste gas input pipe, the high-temperature harmful gas and fresh air are subjected to heat conversion in a heat exchange cavity through a heat exchange pipe, and the fresh air enters the heat exchange cavity through an air inlet in the heat exchange cavity; after the temperature of the air subjected to heat exchange is detected to be proper through the temperature sensor, hot air is input into the heating cavity through the hot air input pipe, heat is recycled in a circulating mode, the resource utilization efficiency is greatly improved, harmful gas is purified, then the air is removed to the level meeting the emission standard, and the environment is protected. Therefore, the atmospheric environment is protected, and the environment-friendly effect is good.

Description

Technical Field

[0001] This utility model relates to the technical field of plastic processing and production equipment, specifically to an environmentally friendly plastic pelletizing machine. Background Technology

[0002] A plastic pelletizer is a device that heats waste plastic or plastic granules to a molten state and then transforms them into new plastic pellets through processes such as extrusion and cutting. The plastic pelletizing process generates a certain amount of waste gas, mainly composed of volatile organic compounds. If this waste gas is released directly into the atmosphere without treatment, it will harm human health and the environment. Traditional plastic pelletizers often lack efficient waste gas treatment systems, leading to significant waste gas emission problems. Furthermore, the melting process of plastic also generates a large amount of heat energy, which is usually directly released into the environment without effective utilization. This not only wastes energy but also increases production costs. Utility Model Content

[0003] In order to overcome the shortcomings of existing technical solutions, this utility model provides an environmentally friendly plastic pelletizing machine, which can effectively solve the problems mentioned in the background technology.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] An environmentally friendly plastic pelletizer includes a frame, on which a raw material feeding system, a plastic extrusion system, a drive control system, and a pelletizing auxiliary system are sequentially arranged. A heat recovery exhaust gas treatment system is also provided on one side of the frame. The plastic extrusion system includes an extrusion die and multiple extrusion chambers arranged in a straight line on the frame. Each extrusion chamber is provided with a heating chamber and a feeding cylinder. Auxiliary mounting guide rails are provided on both sides of the extrusion chamber. A circulation pipe assembly for connecting the heat recovery exhaust gas treatment system is also provided on one side of the extrusion chamber.

[0006] The heat recovery waste gas treatment system includes multiple independently set treatment chambers, temperature sensors, heat exchange mechanisms, and waste gas treatment mechanisms installed in the treatment chambers. A heat exchange chamber is formed within each treatment chamber. The heat exchange mechanism consists of multiple heat exchange tubes with thermal conductivity. The waste gas treatment mechanism includes an air duct connected to the heat exchange tubes. The air duct is equipped with a porous material adsorption filter layer for filtering gas dust, an activated carbon deodorization layer for deodorizing the gas, and an output pipe. The heat exchange chamber is connected to the heating chamber through a circulation pipe assembly. An air inlet is provided on one side of the heat exchange chamber. The circulation pipe assembly includes a hot air input pipe and a waste gas input pipe.

[0007] As a further description of the above technical solution, the raw material feeding system includes a feeding tank, a melting conveyor, and a feeding chamber connected to the melting conveyor. The melting conveyor is located at the bottom of the feeding tank, and the feeding chamber is connected to the drive control system and the feeding cylinder.

[0008] As a further description of the above technical solution, the pelletizing auxiliary system includes a cooling water tank and a pelletizer. One end of the cooling water tank is connected to the frame, and the other end is connected to the pelletizer. The cooling water tank is provided with multiple guide rollers, and the pelletizer is provided with a plastic pellet discharge port on one side.

[0009] As a further description of the above technical solution, the extrusion chamber is slidably mounted on the auxiliary mounting rail, and the two sides of the frame are provided with guide grooves and positioning holes that are connected to the auxiliary mounting rail.

[0010] As a further description of the above technical solution, the processing chamber is also provided with an exhaust gas input interface, a hot air output interface, a manifold and an exhaust pipe connected to the manifold. The hot air output interface is connected to the heat exchange chamber and the heat exchange pipe. The exhaust gas input interface is connected to the exhaust gas input pipe, and the hot air output interface is connected to the hot air input pipe. The manifold is connected to the heat exchange pipe.

[0011] As a further description of the above technical solution, the heat exchange tube is arranged in a "U" shape in the heat exchange chamber, and the side wall of the heat exchange chamber is also provided with a heat insulation layer.

[0012] As a further description of the above technical solution, the feeder cylinder is provided with a feed screw and a drive shaft connected to the feed screw. The drive shaft is connected to a drive control system, which includes a control platform and a drive motor mounted on the control platform.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This utility model discloses an environmentally friendly plastic pelletizing machine, which has at least one of the following beneficial effects during use:

[0015] This integrated plastic granulation equipment combines heat recovery and waste gas treatment. High-temperature harmful gases are introduced through a waste gas inlet pipe connected to the waste gas inlet interface. The high-temperature gases then exchange heat with fresh air in the heat exchange chamber via heat exchange tubes. Fresh air enters the heat exchange chamber through the air inlet. Once the temperature of the heat-exchanged air is suitable, it is introduced into the heating chamber through a hot air inlet pipe. This cyclical process recovers and utilizes heat, significantly improving resource utilization efficiency. Furthermore, the equipment purifies harmful gases to meet emission standards, thus protecting the atmospheric environment and demonstrating strong environmental protection effects. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an environmentally friendly plastic pelletizing machine according to this utility model;

[0017] Figure 2 This is a top view schematic diagram of an environmentally friendly plastic pelletizing machine according to the present invention.

[0018] Figure 3 This is a partial perspective structural diagram of an environmentally friendly plastic pelletizing machine according to this utility model.

[0019] Figure 4 This is a perspective structural diagram of the extrusion system of an environmentally friendly plastic pelletizing machine according to this utility model.

[0020] Figure 5 This is a perspective structural diagram of the heat recovery section of an environmentally friendly plastic pelletizing machine according to this utility model.

[0021] Figure 6 This is a perspective structural diagram of the exhaust gas treatment section of an environmentally friendly plastic pelletizing machine according to this utility model.

[0022] Numbering on the map:

[0023] 1. Frame; 101. Cooling water tank; 102. Pelletizer; 103. Guide roller; 104. Plastic pellet discharge port; 105. Drive control system; 2. Heat recovery and exhaust gas treatment system; 201. Processing chamber; 202. Circulation pipe assembly; 203. Exhaust gas treatment mechanism; 204. Heat exchange mechanism; 205. Heat exchange chamber; 206. Exhaust gas input interface; 207. Air duct; 208. Heat exchange tube; 209. Air inlet; 210. Temperature sensor; 211. Hot air conveyor 212. Outlet; 213. Porous material adsorption filter layer; 214. Activated carbon deodorization layer; 215. Output pipe; 216. Exhaust pipe; 217. Hot air input pipe; 218. Waste gas input pipe; 3. Plastic extrusion system; 301. Extrusion chamber; 302. Heating chamber; 303. Connecting part; 304. Feeding screw; 305. Auxiliary installation guide rail; 306. Extrusion die; 4. Raw material feeding system; 401. Feeding tank; 402. Melt conveyor; 403. Feeding hopper. Detailed Implementation

[0024] 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.

[0025] like Figure 1-6 As shown, this utility model provides an environmentally friendly plastic pelletizer, including a frame 1. The frame 1 is sequentially provided with a raw material feeding system 4, a plastic extrusion system 3, a drive control system 105, and a pelletizing auxiliary system. A heat recovery waste gas treatment system 2 is also provided on one side of the frame 1. The plastic extrusion system 3 includes an extrusion die 306 and a plurality of extrusion chambers 301 arranged in a straight line on the frame 1. Each extrusion chamber 301 is provided with a heating chamber 302 and a feeding cylinder. Auxiliary mounting guide rails 305 are provided on both sides of the extrusion chamber 301. A circulation pipe group 202 for connecting the heat recovery waste gas treatment system 2 is also provided on one side of the extrusion chamber 301.

[0026] The extrusion system in this embodiment adopts a modular design, and a guide groove is provided at the position where the extrusion chamber 301 is installed on the frame 1. During the installation process, the extrusion chamber 301 can be moved to the designated position through the guide groove, and other extrusion chambers 301 can be installed in sequence. A connecting part 303 is provided at the end of the extrusion chamber 301. The connecting part 303 makes the feeding barrel inside the extrusion chamber 301 coaxially arranged, and a sealing component is connected between them to form a sealed feeding channel inside. The plastic fluid is conveyed by the feeding screw 304 and output into strips at one end of the extrusion die 306. After being cooled by the cooling water tank 101, it is granulated by the pelletizer 102 and finally discharged. Since the extrusion chambers 301 are relatively independent, during maintenance and upkeep, a single extrusion chamber 301 can be operated without stopping the entire production line.

[0027] The heat recovery waste gas treatment system 2 includes multiple independently set treatment chambers 201, a temperature sensor 210, a heat exchange mechanism 204, and a waste gas treatment mechanism 203 installed in the treatment chambers 201. A heat exchange chamber 205 is formed in each treatment chamber 201. The heat exchange mechanism 204 is composed of multiple heat exchange tubes 208 with thermal conductivity. The waste gas treatment mechanism 203 includes a duct 207 connected to the heat exchange tubes 208. The duct 207 is provided with a porous material adsorption filter layer 212 for filtering gas dust, an activated carbon deodorization layer 213 for deodorizing the gas, and an output pipe 214. The heat exchange chamber 205 is connected to the heating chamber 302 through a circulation pipe assembly 202. An air inlet 209 is provided on one side of the heat exchange chamber 205. The circulation pipe assembly 202 includes a hot air input pipe 216 and a waste gas input pipe 217.

[0028] This embodiment integrates two major functions: heat recovery and waste gas treatment. It can effectively recover heat and treat the generated waste gas during the plastic granulation process, achieving efficient resource utilization and environmental protection.

[0029] Protection. Heat recovery can recover heat generated during plastic melting and extrusion. This collected heat can be used to preheat raw materials and heat the plastic fluid, significantly improving energy efficiency and reducing production costs. Waste gas generated during plastic granulation typically contains harmful volatile organic compounds and other pollutants. Direct emission into the atmosphere without treatment will pollute the environment. Waste gas treatment systems purify the gas before emission using methods such as activated carbon adsorption materials.

[0030] Furthermore, the raw material feeding system 4 includes a feeding tank 401, a melting conveyor 402, and a feeding chamber 403 connected to the melting conveyor 402. The melting conveyor 402 is located at the bottom of the feeding tank 401, and the feeding chamber 403 is connected to the drive control system 105 and the feeder cylinder.

[0031] Furthermore, the pelletizing auxiliary system includes a cooling water tank 101 and a pelletizer 102. One end of the cooling water tank 101 is connected to the frame 1, and the other end is connected to the pelletizer 102. The cooling water tank 101 is provided with multiple guide rollers 103, and the pelletizer 102 is provided with a plastic pellet discharge port 104 on one side.

[0032] After the raw material is initially heated and melted into a fluid, it is conveyed to the feed chamber 403. The molten material conveyor 402 is installed in the feed chamber 403 and is connected to both the drive motor and the feeding screw 304. The conveying direction of the molten material conveyor 402 is consistent with the feeding direction of the feeding screw 304, thus conveying the plastic fluid sequentially within the feeder barrel. Simultaneously, the intense stirring, mixing, and shearing friction between the screw and the inner surface of the feeder barrel generates internal friction shear heat, further improving the fluidity of the plastic fluid. Finally, the fluid is extruded onto the extrusion die 306 on the die head at a fixed quantity, pressure, and temperature.

[0033] Furthermore, the extrusion chamber 301 moves along the length of the frame 1 via the auxiliary mounting guide rail 305, and the extrusion chamber is slidably mounted on the auxiliary mounting guide rail. The frame 1 has guide grooves and positioning holes on both sides that connect to the auxiliary mounting guide rail 305, and a connecting part 303 is provided between every two extrusion chambers 301.

[0034] The modular design of the extrusion chamber 301 greatly improves the utilization rate and production efficiency of the equipment, and also reduces the production, transportation and installation costs of the equipment, thereby reducing the overall complexity and cost of the equipment.

[0035] Furthermore, the processing chamber 201 is also equipped with an exhaust gas inlet 206, a hot air outlet 211, a manifold, and an exhaust pipe 215 connected to the manifold. The hot air outlet 211 communicates with the heat exchange chamber 205 and is connected to the heat exchange tube 208. The exhaust gas inlet 206 is connected to the exhaust gas inlet pipe 217, and the hot air outlet 211 is connected to the hot air inlet pipe 216. The manifold is connected to the heat exchange tube 208.

[0036] Furthermore, the heat exchange tube 208 is arranged in a U-shape within the heat exchange chamber 205, and an insulation layer is also provided on the side wall of the heat exchange chamber 205. The U-shaped installation in the heat exchange chamber 205 increases its heat exchange area and efficiency.

[0037] By using a suction fan or increasing the internal pressure of the heating chamber 302, high-temperature harmful gases are forced through the exhaust gas inlet pipe 217 connected to the exhaust gas inlet port 206. The high-temperature gases then pass through the heat exchange pipe 208 and exchange heat with fresh air in the heat exchange chamber 205. Fresh air enters the heat exchange chamber 205 through the air inlet 209. After the air has completed heat exchange, the temperature sensor 210 detects that the temperature is suitable, and then the hot air is introduced into the heating chamber 302 through the hot air inlet pipe 216. This cyclical process recovers and utilizes heat, significantly improving resource utilization efficiency.

[0038] The exhaust gas inside the heat pipe is connected to the air duct 207. The air duct 207 is equipped with a porous material adsorption filter layer 212 for filtering gas dust and an activated carbon deodorization layer 213 for deodorizing the gas. After passing through the above-mentioned filter structure, the exhaust gas is discharged through the output pipe 214, so that the air is removed to the level that meets the emission standards, thereby protecting the atmospheric environment.

[0039] Furthermore, the feeder cylinder is provided with a feed screw 304 and a drive shaft connected to the feed screw 304. The drive shaft is connected to the drive control system 105. The drive control system 105 includes a control platform and a drive motor mounted on the control platform.

[0040] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An environmentally friendly plastic pelletizing machine, characterized in that: The device includes a frame, which is sequentially equipped with a raw material feeding system, a plastic extrusion system, a drive control system, and a granulation auxiliary system. A heat recovery exhaust gas treatment system is also provided on one side of the frame. The plastic extrusion system includes an extrusion die and multiple extrusion chambers arranged in a straight line on the frame. Each extrusion chamber is equipped with a heating chamber and a feeding barrel. Auxiliary mounting rails are provided on both sides of the extrusion chamber. A circulation pipe assembly for connecting the heat recovery exhaust gas treatment system is also provided on one side of the extrusion chamber. The heat recovery waste gas treatment system includes multiple independently set treatment chambers, temperature sensors, heat exchange mechanisms, and waste gas treatment mechanisms installed in the treatment chambers. A heat exchange chamber is formed within each treatment chamber. The heat exchange mechanism consists of multiple heat exchange tubes with thermal conductivity. The waste gas treatment mechanism includes an air duct connected to the heat exchange tubes. The air duct is equipped with a porous material adsorption filter layer for filtering gas dust, an activated carbon deodorization layer for deodorizing the gas, and an output pipe. The heat exchange chamber is connected to the heating chamber through a circulation pipe assembly. An air inlet is provided on one side of the heat exchange chamber. The circulation pipe assembly includes a hot air input pipe and a waste gas input pipe.

2. The environmentally friendly plastic pelletizing machine according to claim 1, characterized in that: The raw material feeding system includes a feeding tank, a melting conveyor, and a feeding chamber connected to the melting conveyor. The melting conveyor is located at the bottom of the feeding tank, and the feeding chamber is connected to the drive control system and the feeding cylinder.

3. The environmentally friendly plastic pelletizing machine according to claim 1, characterized in that: The pelletizing auxiliary system includes a cooling water tank and a pelletizer. One end of the cooling water tank is connected to the frame, and the other end is connected to the pelletizer. Multiple guide rollers are provided in the cooling water tank, and a plastic pellet discharge port is provided on one side of the pelletizer.

4. The environmentally friendly plastic pelletizing machine according to claim 1, characterized in that: The extrusion chamber is slidably mounted on the auxiliary mounting rail, and the two sides of the frame are provided with guide grooves and positioning holes that are connected to the auxiliary mounting rail.

5. The environmentally friendly plastic pelletizing machine according to claim 1, characterized in that: The processing chamber is also equipped with an exhaust gas inlet, a hot air outlet, a manifold, and an exhaust pipe connected to the manifold. The hot air outlet communicates with the heat exchange chamber and is connected to the heat exchange pipe. The exhaust gas inlet is connected to the exhaust gas inlet pipe, and the hot air outlet is connected to the hot air inlet pipe. The manifold is connected to the heat exchange pipe.

6. The environmentally friendly plastic pelletizing machine according to claim 1, characterized in that: The heat exchange tubes are arranged in a U-shape in the heat exchange chamber, and the side wall of the heat exchange chamber is also provided with a heat insulation layer.

7. An environmentally friendly plastic pelletizing machine according to claim 1 or 2, characterized in that: The feeder cylinder is provided with a feed screw and a drive shaft connected to the feed screw. The drive shaft is connected to a drive control system, which includes a control platform and a drive motor mounted on the control platform.

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