A plastic drainage board processing melting device

Improvements to the twin-screw extrusion assembly and heating assembly have solved the problem of low efficiency in existing equipment, enabling efficient plastic melting and safe production, resulting in high-quality drainage boards.

CN224323461UActive Publication Date: 2026-06-05GUANGDONG YUANTIAN ENG

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGDONG YUANTIAN ENG
Filing Date
2025-07-23
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

In existing plastic drainage board processing and melting devices, single-screw extrusion is inefficient and heating and melting efficiency is insufficient, resulting in poor practicality.

Method used

The design incorporates a twin-screw extrusion assembly and a heating assembly, including heating coils and a heating fan, combined with an aerogel composite heat insulation shell to improve melting efficiency and safety.

Benefits of technology

It improves plastic extrusion efficiency, avoids clogging, enhances melting efficiency and safety, ensures uniform heating of plastic, and forms a high-quality drainage board.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of plastic drainage plate production, and disclose a kind of plastic drainage plate processing melting device, including bottom plate and drive box, the bottom plate is far from the one side fixed mounting of drive box anti-skid foot, the one side fixed mounting of bottom plate is close to drive box box body and support assembly, the one side fixed mounting of box body is far from bottom plate feed assembly.This plastic drainage plate processing melting device, through the design of extrusion component, it is convenient to extrude plastic, not easy to block, higher working efficiency, through the design of the cross section of heating coil, in the process of extruding plastic, heating coil heats plastic, so that plastic melts into liquid, it is convenient to inject mould subsequently, form the shape of the required drainage plate, higher practicality, through the design of heating assembly, further improve melting efficiency, through the design of multiple air holes and heat-conducting plate, further improve the melting efficiency, higher practicality.
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Description

Technical Field

[0001] This utility model relates to the field of plastic drainage board production technology, specifically to a plastic drainage board processing and melting device. Background Technology

[0002] The plastic drainage board processing and melting device is the core equipment in the production of plastic drainage boards. Its main function is to heat and melt raw materials such as polyethylene. The working process is as follows: the raw material enters the screw extruder through the hopper. During the rotation and pushing of the screw, the solid raw material is gradually melted into a uniform melt by the heat generated by the external heating device (such as resistance heating coil) and the shearing of the screw. The key parts of the device include the temperature control system (precisely controlling the melting temperature, usually between 150-200℃) and the screw assembly (different screw pitch designs ensure uniform plasticization). The molten plastic is extruded through the mold to form the drainage board substrate, which directly affects the strength and drainage performance of the product. It is widely used in drainage board production lines for civil engineering.

[0003] Chinese Invention Patent Publication No. CN118977397B discloses a plastic drainage board processing and melting device. The device, as described in the specification, incorporates an air inlet chamber within the hot-melt assembly. The air inlet chamber contains a vertical plate, a first guide plate, a second guide plate, and a third guide plate, which help guide air along a specific path. The inclined arrangement of the third guide plate effectively guides the heated air to the air outlet, ensuring that the hot air evenly covers the extrusion assembly. The inverted "V" arrangement of the guide plates further improves the uniformity of airflow, helping to ensure that the plastic raw material is uniformly heated during extrusion. This uniform heating effect helps improve extrusion efficiency and ensures the smoothness and uniformity of the molded product surface. However, this plastic drainage board processing and melting device only uses a single screw to extrude the plastic raw material, resulting in low working efficiency. Furthermore, it only uses a heating fan to heat and melt the plastic raw material, leading to low melting efficiency and poor practicality, making it unsuitable for widespread use. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a plastic drainage board processing and melting device, which can effectively solve the problems of low working efficiency in the prior art that only uses a single screw to extrude plastic raw materials, and low melting efficiency, poor practicality, and inconvenience for promotion and use that only uses a heating fan to heat and melt plastic raw materials.

[0005] The technical solution adopted by this utility model is: a plastic drainage board processing and melting device, including a base plate and a drive box. Anti-slip feet are fixedly installed on the side of the base plate away from the drive box. A box body and a support assembly are fixedly installed on the side of the base plate near the drive box. A feeding assembly is fixedly installed on the side of the box body away from the base plate. A silo and a heat insulation shell are fixedly installed on the end of the box body near the support assembly. An extrusion assembly is provided on the side of the base plate near the drive box. A heating assembly is provided on the outer wall of the silo. An installation groove is opened on the inner wall of the silo. A heating coil is provided on the inner wall of the installation groove. A discharge port is fixedly installed on the end of the silo away from the box body.

[0006] Preferably, the extrusion assembly includes a motor, a first pulley, a first shaft, a second pulley, a transmission belt, a first gear, a second shaft, a second gear, a first screw, and a second screw. The first pulley is fixedly mounted on the output end of the motor. The first shaft and the second shaft are rotatably mounted on the inner wall of the drive box. The second pulley is fixedly mounted on the end of the first shaft near the motor. A transmission belt is provided between the second pulley and the first pulley. The first gear is fixedly mounted on the end of the first shaft near the second pulley. The second gear is fixedly mounted on the end of the second shaft near the second pulley. The first screw is fixedly mounted on the outer wall of the first shaft. The second screw is fixedly mounted on the outer wall of the second shaft. The transmission belt is adapted to the second pulley and the first pulley. The first gear and the second gear are meshed. The first screw and the second screw are located inside the silo. The first pulley, the second pulley, the transmission belt, the first gear, and the second gear are all located inside the drive box.

[0007] With the above technical solution, the staff starts the motor, and the rotation of the motor's output shaft drives the rotation of shaft one through the cooperation of pulley one, pulley two and the transmission belt. The rotation of shaft one drives the rotation of shaft two through the cooperation of gear one and gear two, thereby realizing the opposite rotation of screw one and screw two, which facilitates the extrusion of plastic, is not easy to clog, and has high working efficiency.

[0008] Preferably, a door is rotatably mounted on the outer wall of the drive box, a rotating plate is rotatably mounted on the side of the drive box near the door, a slot is provided at the end of the rotating plate away from the door, and a locking block is fixedly mounted on the outer wall of the door, the locking block being adapted to the slot.

[0009] With the above technical solution, by cooperating with the card block and the card slot, the operator can rotate the plate to make the card block engage with the inside of the card slot, which can realize the quick locking of the box door. After long-term use, it is convenient to inspect and maintain the pulley 1, pulley 2, transmission belt, gear 1 and gear 2 inside the box door, which is highly practical.

[0010] Preferably, the inner wall of the silo is provided with an installation groove, and a heating coil is provided on the inner wall of the installation groove. The cross-section of the heating coil is a "square spiral" structure.

[0011] The above technical solution, with the heating coil designed in a "square spiral" cross-section, heats the plastic during the extrusion process, causing it to melt into a liquid state, which facilitates subsequent injection into the mold to form the required drainage plate shape, making it highly practical.

[0012] Preferably, the heating assembly includes a heating fan, a duct, a heating tank, a heat-conducting plate, air holes, and an air outlet. The outer wall of the heating fan is provided with an air duct. A heating tank is formed between the silo and the heat-insulating shell. A heat-conducting plate is fixedly installed on the outer wall of the silo. Air holes are opened on the outer wall of the heat-conducting plate. An air outlet is fixedly installed on the outer wall of the heat-insulating shell. The air duct communicates with the heating tank. Multiple identical air holes are opened and are distributed at equal intervals. Multiple identical heat-conducting plates are provided and are distributed at equal intervals.

[0013] With the above technical solution, during the extrusion of plastic, the staff starts the heating fan, which draws in outside air and reheats it. Then, it is discharged into the heating tank through the air duct, thereby heating the plastic and further improving the melting efficiency. Subsequently, the hot air is discharged into the external air outlet through the air outlet. The design of multiple air holes and heat conduction plates further improves the melting efficiency.

[0014] Preferably, the heat-insulating shell is made of aerogel composite material.

[0015] The above technical solution provides a heat-insulating shell made of aerogel composite material, which has good heat insulation properties and avoids burns to workers after contact during use, thus ensuring high safety.

[0016] Preferably, there are multiple identical anti-slip feet, and the multiple anti-slip feet are symmetrically distributed about the center line of the base plate.

[0017] Through the above technical solution and the design of multiple anti-slip feet, the overall structure is less prone to slipping during use, resulting in high stability.

[0018] Compared with the prior art, the present invention provides a plastic drainage board processing and melting device, which has the following beneficial effects:

[0019] 1. The plastic drainage board processing and melting device, through the design of the extrusion component, facilitates the extrusion of plastic, is not prone to clogging, and has high working efficiency. Through the cooperation of the locking block and the locking groove, the box door can be quickly locked. After long-term use, it is easy to inspect and maintain the pulley 1, pulley 2, transmission belt, gear 1 and gear 2 inside the box door. It has high practicality. The heat insulation shell made of aerogel composite material has good heat insulation properties, and avoids burns to the staff after contact during use, thus having high safety.

[0020] 2. This plastic drainage board processing and melting device features a heating coil with a "square spiral" cross-section. During the extrusion process, the heating coil heats the plastic, melting it into a liquid state. This facilitates subsequent injection into the mold to form the desired drainage board shape, making it highly practical. The design of the heating components further improves melting efficiency. The design of multiple air holes and heat-conducting plates further enhances melting efficiency, making it highly practical. The design of multiple anti-slip feet ensures that the entire device is not prone to slipping during use, resulting in high stability. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a three-dimensional structural diagram of the drive box of this utility model;

[0023] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0024] Figure 4 This is a schematic diagram of the installation structure of the extrusion assembly of this utility model;

[0025] Figure 5 This is a schematic diagram of the heating coil installation structure of this utility model;

[0026] Figure 6 This is a schematic diagram of the installation structure of the heating component of this utility model.

[0027] The components are as follows: 1. Base plate; 2. Anti-slip feet; 3. Drive box; 4. Box body; 5. Feeding assembly; 6. Support assembly; 7. Silo; 8. Heat insulation shell; 9. Extrusion assembly; 901. Motor; 902. Pulley 1; 903. Shaft 1; 904. Pulley 2; 905. Transmission belt; 906. Gear 1; 907. Shaft 2; 908. Gear 2; 909. Screw 1; 910. Screw 2; 10. Heating assembly; 1001. Heating fan; 1002. Air duct; 1003. Heating tank; 1004. Heat-conducting plate; 1005. Air hole; 1006. Air outlet; 11. Mounting slot; 12. Heating coil; 13. Discharge port; 14. Box door; 15. Rotating plate; 16. Slot; 17. Locking block. Detailed Implementation

[0028] 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.

[0029] Example 1:

[0030] like Figure 1-6 As shown, the present invention provides a plastic drainage board processing and melting device, including a base plate 1 and a drive box 3. Anti-slip feet 2 are fixedly installed on the side of the base plate 1 away from the drive box 3. A box body 4 and a support assembly 6 are fixedly installed on the side of the base plate 1 close to the drive box 3. A feeding assembly 5 is fixedly installed on the side of the box body 4 away from the base plate 1. A silo 7 and a heat insulation shell 8 are fixedly installed at the end of the box body 4 close to the support assembly 6. An extrusion assembly 9 is provided on the side of the base plate 1 close to the drive box 3. A heating assembly 10 is provided on the outer wall of the silo 7. An installation groove 11 is opened on the inner wall of the silo 7. A heating coil 12 is provided on the inner wall of the installation groove 11. A discharge port 13 is fixedly installed at the end of the silo 7 away from the box body 4.

[0031] Specifically, the extrusion assembly 9 includes a motor 901, a first pulley 902, a first shaft 903, a second pulley 904, a transmission belt 905, a first gear 906, a second shaft 907, a second gear 908, a first screw 909, and a second screw 910. The output end of the motor 901 is fixedly mounted with the first pulley 902. The first shaft 903 and the second shaft 907 are rotatably mounted on the inner wall of the drive housing 3. The second pulley 904 is fixedly mounted on the end of the first shaft 903 closest to the motor 901. A transmission belt 905 is provided between the second pulley 904 and the first pulley 902. The first shaft 903 is located near the second pulley 904. One end of the shaft is fixedly mounted with gear 906, and the other end of the shaft 907 near pulley 904 is fixedly mounted with gear 908. The outer wall of the shaft 903 is fixedly mounted with screw 909, and the outer wall of the shaft 907 is fixedly mounted with screw 910. The transmission belt 905 is adapted to pulley 904 and pulley 902. Gear 906 and gear 908 are meshed. Screw 909 and screw 910 are located inside the silo 7. Pulley 902, pulley 904, transmission belt 905, gear 906, and gear 908 are all located inside the drive box 3. The advantage is that when the operator starts the motor 901, the output shaft of the motor 901 rotates, which drives the rotating shaft 903 to rotate through the cooperation of pulley 902, pulley 904 and transmission belt 905. The rotation of the rotating shaft 903 drives the rotating shaft 907 to rotate through the cooperation of gear 906 and gear 908, thereby realizing the opposite rotation of screw 909 and screw 910, which facilitates the extrusion of plastic, is not easy to clog, and has high working efficiency.

[0032] Specifically, a door 14 is rotatably mounted on the outer wall of the drive box 3. A rotating plate 15 is rotatably mounted on the side of the drive box 3 near the door 14. A slot 16 is provided at the end of the rotating plate 15 away from the door 14. A locking block 17 is fixedly mounted on the outer wall of the door 14, and the locking block 17 is compatible with the slot 16. The advantage is that, through the cooperation of the locking block 17 and the slot 16, the operator can rotate the rotating plate 15 to make the locking block 17 engage with the inside of the slot 16, which can quickly lock the door 14. After long-term use, it is convenient to inspect and maintain the pulley 902, pulley 904, transmission belt 905, gear 906, and gear 908 inside the door 14, making it highly practical.

[0033] Specifically, the inner wall of the silo 7 is provided with an installation groove 11, and a heating coil 12 is installed on the inner wall of the installation groove 11. The cross-section of the heating coil 12 is in the shape of a "square spiral". The advantage is that, through the design of the "square spiral" cross-section of the heating coil 12, the heating coil 12 heats the plastic during the extrusion process, causing the plastic to melt into a liquid state, which is convenient for subsequent injection into the mold to form the required drainage plate shape, making it highly practical.

[0034] Example 2:

[0035] like Figure 2-6 As shown, as an improvement on the previous embodiment, in order to further improve the overall melting efficiency, the heating assembly 10 specifically includes a heating fan 1001, a duct 1002, a heating tank 1003, a heat-conducting plate 1004, air holes 1005, and an air outlet 1006. The outer wall of the heating fan 1001 is provided with the duct 1002, and the heating tank 1003 is formed between the silo 7 and the heat insulation shell 8. The heat-conducting plate 1004 is fixedly installed on the outer wall of the silo 7, and air holes 1005 are opened on the outer wall of the heat-conducting plate 1004. The air outlet 1006 is fixedly installed on the outer wall of the heat insulation shell 8. The duct 1002 communicates with the heating tank 1003. Multiple identical air holes 1005 are opened and are distributed at equal intervals. Multiple identical heat-conducting plates 1004 are provided and are distributed at equal intervals. The advantage is that during the extrusion of plastic, the operator starts the heating fan 1001, which draws in outside air and reheats it. Then, it is discharged into the heating tank 1003 through the air duct 1002, thereby heating the plastic and further improving the melting efficiency. Subsequently, the hot air is discharged into the external air outlet through the air outlet 1006. The design of multiple air holes 1005 and heat conduction plate 1004 further improves the melting efficiency.

[0036] Specifically, the heat insulation shell 8 is made of aerogel composite material. The advantage is that the heat insulation shell 8 made of aerogel composite material has good heat insulation properties, preventing burns to workers upon contact during use, thus ensuring high safety.

[0037] Specifically, multiple identical anti-slip feet 2 are provided, and these multiple anti-slip feet 2 are symmetrically distributed about the center line of the base plate 1. The advantage is that, through the design of multiple anti-slip feet 2, the overall structure is less prone to slipping during use, resulting in higher stability.

[0038] Working Principle: During installation, the operator rotates the rotating plate 15, causing the locking block 17 to engage with the slot 16, enabling quick locking of the door 14. After prolonged use, this facilitates maintenance of the pulleys 902, 904, 905, 906, and 908 inside the door 14, making it highly practical. In operation, the operator first connects the external power supply, then places the plastic material into the feeding assembly 5. The feeding assembly 5 then discharges the plastic material into the silo 7. The operator then starts the motor 901. The output shaft of the motor 901 rotates, driving the rotating shaft 903 through the interaction of pulleys 902, 904, and 905. The rotation of the rotating shaft 903, in turn, drives the rotating shaft 907 through the interaction of gears 906 and 908, thus achieving opposite rotation of screws 909 and 910. This facilitates plastic extrusion, reduces clogging, and increases working efficiency. Heating is also used in this process. The coil 12 has a "square spiral" cross-section design. During the extrusion of plastic, the heating coil 12 heats the plastic, melting it into a liquid state, which facilitates subsequent injection into the mold to form the required drainage plate shape, making it highly practical. During the extrusion of plastic, the operator starts the heating fan 1001, which draws in outside air and reheats it. Then, it is discharged into the heating tank 1003 through the air duct 1002, thereby heating the plastic and further improving the melting efficiency. Subsequently, the hot air is discharged into the external air outlet through the air outlet 1006. The design of multiple air holes 1005 and heat-conducting plate 1004 further improves the melting efficiency. The heat insulation shell 8, made of aerogel composite material, has good heat insulation properties, preventing workers from being burned after contact during use, and has a high safety level. The design of multiple anti-slip feet 2 makes the whole structure less prone to slipping during use, resulting in high stability.

[0039] 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 plastic drainage board processing and melting device, comprising a base plate (1) and a drive box (3), characterized in that: The bottom plate (1) is fixedly equipped with anti-slip feet (2) on the side away from the drive box (3). The bottom plate (1) is fixedly equipped with a box body (4) and a support assembly (6) on the side close to the drive box (3). The box body (4) is fixedly equipped with a feeding assembly (5) on the side away from the bottom plate (1). The box body (4) is fixedly equipped with a silo (7) and a heat insulation shell (8) at the end close to the support assembly (6). The bottom plate (1) is equipped with an extrusion assembly (9) on the side close to the drive box (3). The outer wall of the silo (7) is equipped with a heating assembly (10). The inner wall of the silo (7) is provided with an installation groove (11). The inner wall of the installation groove (11) is equipped with a heating coil (12). The end of the silo (7) away from the box body (4) is fixedly equipped with a discharge port (13).

2. The plastic drainage board processing and melting device according to claim 1, characterized in that: The extrusion assembly (9) includes a motor (901), a first pulley (902), a first shaft (903), a second pulley (904), a transmission belt (905), a first gear (906), a second shaft (907), a second gear (908), a first screw (909), and a second screw (910). The output end of the motor (901) is fixedly mounted with the first pulley (902). The inner wall of the drive box (3) is rotatably mounted with the first shaft (903) and the second shaft (907). The end of the first shaft (903) near the motor (901) is fixedly mounted with the second pulley (904). A transmission belt (905) is provided between the second pulley (904) and the first pulley (902). The first shaft (903) is located near the second pulley (904). One end of the shaft is fixedly mounted with a gear 1 (906), and the other end of the shaft 2 (907) near the pulley 2 (904) is fixedly mounted with a gear 2 (908). The outer wall of the shaft 1 (903) is fixedly mounted with a screw 1 (909), and the outer wall of the shaft 2 (907) is fixedly mounted with a screw 2 (910). The transmission belt (905) is adapted to the pulley 2 (904) and the pulley 1 (902). The gear 1 (906) and the gear 2 (908) are meshed. The screw 1 (909) and the screw 2 (910) are located inside the silo (7). The pulley 1 (902), the pulley 2 (904), the transmission belt (905), the gear 1 (906), and the gear 2 (908) are all located inside the drive box (3).

3. The plastic drainage board processing and melting device according to claim 1, characterized in that: The outer wall of the drive box (3) is rotatably mounted with a door (14). A rotating plate (15) is rotatably mounted on the side of the drive box (3) near the door (14). A slot (16) is provided at the end of the rotating plate (15) away from the door (14). A locking block (17) is fixedly mounted on the outer wall of the door (14). The locking block (17) is adapted to the slot (16).

4. The plastic drainage board processing and melting device according to claim 1, characterized in that: The inner wall of the silo (7) is provided with an installation groove (11), and a heating coil (12) is provided on the inner wall of the installation groove (11). The cross-section of the heating coil (12) is a "square spiral" structure.

5. The plastic drainage board processing and melting device according to claim 1, characterized in that: The heating assembly (10) includes a heating fan (1001), a duct (1002), a heating tank (1003), a heat-conducting plate (1004), a vent (1005), and an air outlet (1006). The heating fan (1001) has a duct (1002) installed on its outer wall. A heating tank (1003) is formed between the silo (7) and the heat-insulating shell (8). A heat-conducting plate (1004) is fixedly installed on the outer wall of the silo (7). The outer wall of the heat-conducting plate (1004) is provided with air holes (1005), the outer wall of the heat insulation shell (8) is fixedly installed with an air outlet (1006), the air duct (1002) is connected to the heating tank (1003), a plurality of identical air holes (1005) are provided, and the plurality of air holes (1005) are distributed at equal intervals, and a plurality of identical heat-conducting plates (1004) are provided, and the plurality of heat-conducting plates (1004) are distributed at equal intervals.

6. The plastic drainage board processing and melting device according to claim 1, characterized in that: The heat-insulating shell (8) is made of aerogel composite material.

7. The plastic drainage board processing and melting device according to claim 1, characterized in that: The anti-slip support (2) is provided in multiple identical manner, and the multiple anti-slip support (2) are symmetrically distributed about the center line of the base plate (1).