Plastic smelting furnace

Abstract

The utility model discloses a plastic smelting furnace which comprises a furnace body, heaters are fixedly installed on the two sides of the outer surface of the furnace body, a motor is fixedly installed in the center of the upper surface of the furnace body, and an output shaft of the motor penetrates and extends into the furnace body and is provided with a stirring mechanism matched with the heaters. And a discharging assembly is mounted at the bottom of the stirring mechanism. According to the stirring mechanism and the discharging assembly, when raw materials enter the furnace body, a stirring rod can stir the raw materials, an auxiliary heater conducts uniform heat transfer on the raw materials and rapidly melts the raw materials, meanwhile, the molten raw materials pass through a filter plate and are pushed by a spiral conveying blade to rapidly flow out of the furnace body, and in the whole process, the raw materials enter the furnace body through the stirring mechanism and the discharging assembly. The feeding pipe can be used for feeding continuously, the continuous feeding, melting and discharging process is achieved, time and space resources are fully utilized, and the smelting efficiency is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic production, in particular to a plastic melting furnace. Background Art

[0002] Plastics are polymer compounds made from monomers with appropriate additives such as plasticizers, stabilizers, antioxidants, flame retardants, colorants, etc., through addition polymerization or condensation polymerization. In the production process, plastics need to be melted in a melting furnace before being extruded through an extruder to transform the solid plastic into a uniform melt, which is then output and sent to the next process.

[0003] However, in actual operation, the existing plastic melting furnace needs to be discharged into the extruder after melting, so continuous operation cannot be performed. When the initial raw materials enter, the plastic raw materials are in a solid state and take up a large space inside the furnace body, but there are not many raw materials in the subsequent molten state, which causes a certain waste of space and time resources and affects the melting efficiency. In addition, mixed toxic fumes are generated during the melting process of the raw materials, which will be mixed in the raw materials, affecting the processing quality of the melt that is subsequently melted and enters the extruder for extrusion. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and provides a plastic melting furnace.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a plastic melting furnace, comprising a furnace body, heaters are fixedly installed on both sides of the outer surface of the furnace body, a motor is fixedly installed at the center position of the upper surface of the furnace body, the output shaft of the motor extends through the interior of the furnace body and is installed with a stirring mechanism that matches the heater, a feeding assembly is installed at the bottom of the stirring mechanism, and an exhaust mechanism that matches the heater is installed at one end of the upper surface of the furnace body, and a filter assembly is installed inside the exhaust mechanism.

[0006] Furthermore, the stirring mechanism includes a rotating shaft fixedly connected to the end of the motor output shaft, connecting rods are fixedly connected to both sides of the outer surface of the rotating shaft, one end of the two connecting rods is fixedly connected to a stirring rod, and the lower surfaces of the two stirring rods are fixedly connected to a scraper.

[0007] Furthermore, the material discharge assembly includes a connecting sleeve which is respectively sleeved and fixedly connected to the outer surface of the rotating shaft and a spiral conveying blade which is fixedly connected to the lower surface of the rotating shaft. The outer surface of the connecting sleeve is sleeved and rotatably connected with a filter plate. The outer surface of the filter plate is fixedly connected to the inner wall of the furnace body, and the upper surface of the filter plate is in contact with the lower surface of the scraper.

[0008] Furthermore, the exhaust mechanism includes an exhaust pipe fixedly connected to one end of the upper surface of the furnace body and a support plate fixedly connected to the top of the outer surface of the furnace body, a sealing cover is fixedly connected to the top of the exhaust pipe, an exhaust fan is fixedly installed on the upper surface of the support plate, and the air inlet pipe of the exhaust fan is fixedly connected to the inside of the exhaust pipe.

[0009] Furthermore, the filter assembly includes a filter screen and an activated carbon adsorption screen which are respectively fixedly connected to the inner wall of the air outlet pipe, and the activated carbon adsorption screen is located above the filter screen.

[0010] Furthermore, a heat-insulating layer is fixedly connected to the outer surface of the heater.

[0011] Furthermore, one end of the upper surface of the furnace body is fixedly connected to a feed pipe, an extruder is fixedly installed at the bottom of the furnace body, and the interior of the furnace body is connected to the interior of the extruder.

[0012] The utility model has the following beneficial effects:

[0013] 1. When the utility model is in use, the plastic melting furnace, through the provided stirring mechanism and the feeding assembly, when the raw materials enter the interior of the furnace body, the operation of the motor can drive the rotation of the rotating shaft, thereby driving the rotation of the stirring rod, so that the stirring rod stirs the raw materials, thereby assisting the heater to evenly transfer heat to the raw materials and quickly melt them. At the same time, the molten raw materials will continue to fall to the bottom of the furnace body through the filter plate, and quickly flow out of the furnace body under the promotion of the spiral conveying blades. During the whole process, the feed pipe can continuously feed, and the unmelted raw materials will be blocked by the filter plate and continue to melt above, thus realizing the process of continuous feeding, melting and discharging, making full use of time and space resources, and ensuring the smelting efficiency. At the same time, the existence of the scraper can also prevent the unmelted raw materials from blocking the filter plate, which is more practical.

[0014] 2. When the utility model is in use, the plastic melting furnace, through the exhaust mechanism and the filter assembly, can start the exhaust fan when the plastic raw material is being melted, and the smoke generated by the melting is extracted from the inside of the furnace body into the exhaust pipe, and then filtered through the filter net and the activated carbon adsorption net, and then discharged to the outside, which not only solves the problem of smoke mixed in the raw material and affecting the subsequent melt processing quality, but also is more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the air extraction mechanism and the filter assembly of the utility model;

[0017] Figure 3 It is a three-dimensional diagram of the furnace body of the present utility model.

[0018] Legend:

[0019] 1. Extruder; 2. Furnace body; 3. Feed pipe; 4. Motor; 5. Rotating shaft; 6. Connecting rod; 7. Stirring rod; 8. Scraper; 9. Connecting sleeve; 10. Spiral conveying blade; 11. Filter plate; 12. Support plate; 13. Exhaust fan; 14. Heater; 15. Exhaust pipe; 16. Filter screen; 17. Activated carbon adsorption screen; 18. Sealing cover. DETAILED DESCRIPTION

[0020] Figures 1 to 3 As shown, it relates to a plastic melting furnace, including a furnace body 2, one end of the upper surface of the furnace body 2 is fixedly connected with a feed pipe 3, an extruder 1 is fixedly installed at the bottom of the furnace body 2, and the interior of the furnace body 2 is connected with the interior of the extruder 1, heaters 14 are fixedly installed on both sides of the outer surface of the furnace body 2, and the outer surface of the heater 14 is fixedly connected with an insulation layer, wherein the heater 14 belongs to a well-known mature technology in the prior art and is not described in detail here, a motor 4 is fixedly installed at the center position of the upper surface of the furnace body 2, the output shaft of the motor 4 extends through the interior of the furnace body 2 and is installed with a stirring mechanism matched with the heater 14, a feeding assembly is installed at the bottom of the stirring mechanism, and an exhaust mechanism matched with the heater 14 is installed at one end of the upper surface of the furnace body 2, and a filter assembly is installed inside the exhaust mechanism.

[0021] The stirring mechanism includes a rotating shaft 5 fixedly connected to the end of the output shaft of the motor 4, connecting rods 6 are fixedly connected to both sides of the outer surface of the rotating shaft 5, one end of the two connecting rods 6 is fixedly connected to stirring rods 7, and the lower surfaces of the two stirring rods 7 are fixedly connected to scrapers 8. The operation of the motor 4 can drive the rotation of the rotating shaft 5, and then drive the stirring rods 7 to perform circular motion around the rotating shaft 5 through the connecting rods 6, and the auxiliary heater 14 melts the raw materials.

[0022] The material discharge assembly includes a connecting sleeve 9 which is respectively sleeved and fixedly connected to the outer surface of the rotating shaft 5 and a spiral conveying blade 10 which is fixedly connected to the lower surface of the rotating shaft 5. The outer surface of the connecting sleeve 9 is sleeved and rotatably connected with a filter plate 11. The outer surface of the filter plate 11 is fixedly connected to the inner wall of the furnace body 2, and the upper surface of the filter plate 11 is in contact with the lower surface of the scraper 8. When the scraper 8 follows the stirring rod 7 to perform a circular motion, it will scrape the filter plate 11, thereby scraping the unmelted raw material attached to the surface of the filter plate 11, which will not block the filter plate 11, and will slowly melt and fall off the filter plate 11 as the heater 14 heats it.

[0023] The exhaust mechanism includes an exhaust pipe 15 fixedly connected to one end of the upper surface of the furnace body 2 and a support plate 12 fixedly connected to the top of the outer surface of the furnace body 2, a sealing cover 18 is fixedly connected to the top of the exhaust pipe 15, and an exhaust fan 13 is fixedly installed on the upper surface of the support plate 12, wherein the exhaust fan 13 belongs to the common known technology in the prior art and is not described here, and the air inlet pipe of the exhaust fan 13 is fixedly connected to the inside of the exhaust pipe 15, and the start-up of the exhaust fan 13 can extract the smoke in the furnace body 2 through the exhaust pipe 15 to the outside, thereby avoiding the smoke from mixing in the raw material, thereby affecting the subsequent processing quality of the melt.

[0024] The filter assembly includes a filter screen 16 and an activated carbon adsorption screen 17 which are respectively fixedly connected to the inner wall of the exhaust pipe 15, and the activated carbon adsorption screen 17 is located above the filter screen 16, wherein the filter screen 16 can eliminate large particles in the flue gas, and the activated carbon adsorption screen 17 can adsorb toxic and harmful substances in the flue gas, thereby purifying the flue gas and then discharging it.

[0025] When using the plastic melting furnace, start the motor 4 and the exhaust fan 13. When the raw materials enter the furnace body 2, the operation of the motor 4 can drive the rotation of the shaft 5, thereby driving the rotation of the stirring rod 7, so that the stirring rod 7 stirs the raw materials, thereby assisting the heater 14 to evenly transfer heat to the raw materials and quickly melt them. At the same time, the molten raw materials will continue to fall to the bottom of the furnace body 2 through the filter plate 11, and the rotation of the shaft 5 can be transmitted to the spiral conveying blade 10 through the connecting sleeve 9, so that the spiral conveying blade 10 follows the rotation, and the molten raw materials will quickly flow out of the furnace body 2 under the push of the spiral conveying blade 10. In the whole process, the feed The tube 3 can be continuously fed, and the unmelted raw material will be blocked by the filter plate 11 and continue to melt above, thus realizing the process of continuous feeding, melting and discharging, making full use of time and space resources, and ensuring the smelting efficiency. At the same time, the existence of the scraper 8 can also prevent the unmelted raw material from blocking the filter plate 11, which is more practical. When the plastic raw material is being melted, the exhaust fan 13 can be started to extract the smoke generated by the smelting from the inside of the furnace body 2 into the exhaust pipe 15, and then filtered through the filter net 16 and the activated carbon adsorption net 17, and then discharged to the outside, which not only solves the problem of smoke mixed in the raw material affecting the subsequent melt processing quality, but also is more environmentally friendly.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A plastic melting furnace, comprising a furnace body (2), characterized in that: Heaters (14) are fixedly mounted on both sides of the outer surface of the furnace body (2); a motor (4) is fixedly mounted at the center of the upper surface of the furnace body (2); an output shaft of the motor (4) extends through the interior of the furnace body (2) and is mounted with a stirring mechanism that matches the heater (14); a material discharge assembly is mounted at the bottom of the stirring mechanism; and an exhaust mechanism that matches the heater (14) is mounted at one end of the upper surface of the furnace body (2); a filter assembly is mounted inside the exhaust mechanism.

2. A plastic melting furnace according to claim 1, characterized in that: The stirring mechanism comprises a rotating shaft (5) fixedly connected to the end of the output shaft of the motor (4), connecting rods (6) are fixedly connected to both sides of the outer surface of the rotating shaft (5), one end of the two connecting rods (6) are fixedly connected to stirring rods (7), and the lower surfaces of the two stirring rods (7) are fixedly connected to scrapers (8).

3. A plastic melting furnace according to claim 2, characterized in that: The material discharge assembly comprises a connecting sleeve (9) which is respectively sleeved and fixedly connected to the outer surface of the rotating shaft (5) and a spiral conveying blade (10) which is fixedly connected to the lower surface of the rotating shaft (5); the outer surface of the connecting sleeve (9) is sleeved and rotatably connected with a filter plate (11); the outer surface of the filter plate (11) is fixedly connected to the inner wall of the furnace body (2), and the upper surface of the filter plate (11) is in contact with the lower surface of the scraper (8).

4. A plastic melting furnace according to claim 1, characterized in that: The exhaust mechanism comprises an exhaust pipe (15) fixedly connected to one end of the upper surface of the furnace body (2) and a support plate (12) fixedly connected to the top of the outer surface of the furnace body (2); a sealing cover (18) is fixedly connected to the top of the exhaust pipe (15); an exhaust fan (13) is fixedly installed on the upper surface of the support plate (12); and an air inlet pipe of the exhaust fan (13) is fixedly connected to the inside of the exhaust pipe (15).

5. A plastic melting furnace according to claim 4, characterized in that: The filter assembly comprises a filter screen (16) and an activated carbon adsorption screen (17) which are respectively fixedly connected to the inner wall of the air outlet pipe (15), and the activated carbon adsorption screen (17) is located above the filter screen (16).

6. A plastic melting furnace according to claim 1, characterized in that: A heat-insulating layer is fixedly connected to the outer surface of the heater (14).

7. A plastic melting furnace according to claim 1, characterized in that: A feed pipe (3) is fixedly connected to one end of the upper surface of the furnace body (2), an extruder (1) is fixedly installed at the bottom of the furnace body (2), and the interior of the furnace body (2) is connected to the interior of the extruder (1).

Images