Smelting device for preparing polylactic acid material

Abstract

The utility model discloses a smelting device for polylactic acid material preparation, which relates to the technical field of smelting devices, and comprises a processing platform, two heating round seats are arranged at the upper end of the processing platform, a carrying disc is arranged between the two heating round seats, and the carrying disc and the processing platform are of an integral structure. A power box is arranged at the front end of the carrying disc. The electric heating plate is arranged in the heating round seat, a charging barrel is arranged at the upper end of the electric heating plate, the charging barrel is inserted and mounted in the heating round seat, a movable disc cover is arranged right above the charging barrel, a stirring paddle is arranged below the movable disc cover, and the stirring paddle is arranged below the movable disc cover. The problems that when an existing smelting device is used for smelting and processing plastic raw materials, the smelting purity is ensured through an arranged filtering mechanism, but after smelting is finished, the materials need to be poured out after being cooled, then secondary smelting can be conducted, and the smelting and processing efficiency is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of smelting devices, and particularly relates to a smelting device for preparing polylactic acid materials. Background Technique

[0002] Polylactic acid is a kind of plastic, also known as PLA or poly(lactic acid), which is a polyester polymer mainly polymerized from lactic acid and belongs to the category of organic synthetic materials. In the process of preparing polylactic acid materials, smelting treatment needs to be carried out with the help of a smelting device.

[0003] For example, the publication number is: CN218398979U (named a smelting device for degradable plastic raw materials), including a base, an air suction pump, a filter cylinder, a smelting box and a screen. The left end of the upper surface of the base is fixed with an air suction pump, and the center of the left surface of the air suction pump is connected with an air outlet pipe. The left inner surface of the air outlet pipe is connected with a filter cylinder. The upper surface of the base is provided with a smelting box, and the left end of the upper surface of the smelting box is connected with an air suction pipe. The center of the upper surface of the smelting box is fixed with a feeding port, and cutting fans are arranged at the left and right ends of the feeding port. The inner surface of the smelting box is provided with a sliding groove, and a screen slides on the sliding groove. The connection between the screen and the right surface of the smelting box is sealed by a sealing strip. Heating rods are fixed at the left and right ends of the upper surface inside the smelting box. The lower end of the right surface of the smelting box is connected with a discharge pipe. There are an air suction pump, a first filter screen, a cylinder body, a primary filter screen, an activated carbon filter screen, a HEPA filter screen, a sealing cover and positioning screws. The waste gas during smelting enters the air suction pump through the air suction pipe on the air suction pump, and then passes through the cylinder body, the HEPA filter screen, the activated carbon filter screen, the primary filter screen and the filter screen in sequence to filter the waste gas. When the device is not in use, by turning the positioning screws, the primary filter screen, the activated carbon filter screen and the HEPA filter screen are pulled out for replacement, which is convenient for the treatment of waste gas during smelting and the replacement of the filtering device.

[0004] The above-mentioned smelting device ensures the smelting purity through the set filtering mechanism when smelting and processing plastic raw materials. However, after smelting is completed, it is necessary to wait for the material to cool down before pouring it out for secondary smelting, which causes problems affecting the smelting processing efficiency. Therefore, we provide a smelting device for preparing polylactic acid materials. Content of the Utility Model

[0005] The purpose of the utility model is to provide a smelting device for preparing polylactic acid materials, so as to solve the problem that the existing smelting device ensures the smelting purity through the set filtering mechanism when smelting and processing plastic raw materials, but after smelting is completed, it is necessary to wait for the material to cool down before pouring it out for secondary smelting, which causes problems affecting the smelting processing efficiency as mentioned in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A smelting device for the preparation of polylactic acid materials, including a processing platform, two heating round seats are arranged at the upper end of the processing platform, a carrier tray is arranged between the two heating round seats, the carrier tray and the processing platform are of an integral structure, and a power supply box is arranged at the front end position of the carrier tray;

[0007] It further includes:

[0008] An electric heating plate, which is arranged inside the heating round seat, and a charging cylinder is placed at the upper end of the electric heating plate. The charging cylinder is inserted and installed inside the heating round seat. An activity disc cover is arranged directly above the charging cylinder, and a stirring paddle is arranged below the activity disc cover;

[0009] A bottom turntable, which is arranged above the carrier tray, and a bearing column is welded at the upper end of the bottom turntable. An extension support rod is welded on the outer wall of the top end of the bearing column, and an end seat plate is welded at one end of the extension support rod. A hydraulic cylinder is arranged at the upper end of the end seat plate;

[0010] A central circular groove, which is arranged inside the carrier tray, and a bearing seat is fixedly arranged inside the central circular groove through screws. An inner connecting shaft is welded at the center position of the bottom of the bottom turntable, and the inner connecting shaft is rotationally connected to the carrier tray through the bearing seat.

[0011] Preferably, two through holes are arranged inside the bottom turntable, and the two through holes are symmetrically distributed about the center point of the bottom turntable. A positioning slot is arranged on one side of the central circular groove, and the positioning slot and the carrier tray are of an integral structure.

[0012] Preferably, a positioning plug rod is inserted and installed inside the positioning slot and one through hole, and the bottom turntable is positioned and connected to the carrier tray through the positioning plug rod.

[0013] Preferably, a driving motor is arranged at the center position of the top of the activity disc cover, and the output shaft of the driving motor is welded and connected to the central shaft of the stirring paddle.

[0014] Preferably, switches are respectively arranged on both sides of the power supply box. The output end of the power supply box is electrically connected to the input end of the switch, and the output end of the switch is electrically connected to the input end of the electric heating plate.

[0015] Preferably, a connecting disc is welded at one end of the piston rod of the hydraulic cylinder, and the connecting disc is welded and connected to the activity disc cover through a connecting rod.

[0016] Preferably, a clamping shaft disc is welded at the lower end of the inner connecting shaft, and the size of the clamping shaft disc is larger than the diameter of the bearing seat.

[0017] Compared with the prior art, the beneficial effects of the present utility model are:

[0018] The utility model raises the movable disc cover and the stirring paddle by pulling them with a hydraulic cylinder, pulls out the positioning insertion rod, then rotates the bearing column by 180 degrees, reinstalls the positioning insertion rod for positioning, and then can mix and melt the polylactic acid raw material inside another charging cylinder in the same way. The polylactic acid raw material mixed and melted in the previous charging cylinder is cooled naturally at room temperature, without waiting for cooling before remelting, improving the melting efficiency of the polylactic acid material and overcoming the problem that the existing melting device ensures the melting purity through a set filtering mechanism when melting plastic raw materials, but after melting, it is necessary to wait for the material to cool before pouring out for secondary melting, which affects the melting processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The front view of the structure of the melting device for preparing polylactic acid materials of the present utility model;

[0020] Figure 2 The schematic diagram of the internal structure of the melting device for preparing polylactic acid materials of the present utility model;

[0021] Figure 3 The bottom view of the structure of the melting device for preparing polylactic acid materials of the present utility model;

[0022] Figure 4 The enlarged schematic diagram of the structure of part A of the present utility model;

[0023] In the figure: 1, processing platform; 2, heating round seat; 3, charging cylinder; 4, bearing column; 5, supporting tray; 6, power supply box; 7, switch; 8, movable disc cover; 9, stirring paddle; 10, connecting disc; 11, driving motor; 12, extending support rod; 13, end seat plate; 14, hydraulic cylinder; 15, electric heating plate; 16, positioning insertion rod; 17, bottom turntable; 18, positioning slot; 19, through hole; 20, central circular groove; 21, bearing seat; 22, inner connecting shaft; 23, clamping shaft disc. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0025] Please refer to Figures 1-4 , an embodiment provided by the present utility model: A melting device for preparing polylactic acid materials, including a processing platform 1, two heating round seats 2 are arranged at the upper end of the processing platform 1, a supporting tray 5 is arranged between the two heating round seats 2, the supporting tray 5 and the processing platform 1 are of an integral structure, and a power supply box 6 is arranged at the front end position of the supporting tray 5;

[0026] It further includes:

[0027] The electric heating plate 15 is arranged inside the heating round seat 2, and a charging cylinder 3 is placed at the upper end of the electric heating plate 15. The charging cylinder 3 is inserted and installed inside the heating round seat 2. An active disk cover 8 is arranged directly above the charging cylinder 3, and a stirring paddle 9 is arranged below the active disk cover 8;

[0028] The bottom turntable 17 is arranged above the carrier plate 5. A bearing column 4 is welded to the upper end of the bottom turntable 17. An extension rod 12 is welded to the outer wall of the top end of the bearing column 4. A end seat plate 13 is welded to one end of the extension rod 12, and a hydraulic cylinder 14 is arranged at the upper end of the end seat plate 13;

[0029] The central circular groove 20 is arranged inside the carrier plate 5. A bearing seat 21 is fixedly arranged inside the central circular groove 20 by screws. An inner connecting shaft 22 is welded to the center position of the bottom of the bottom turntable 17. The inner connecting shaft 22 is rotationally connected to the carrier plate 5 through the bearing seat 21.

[0030] During use, the driving motor drives the stirring paddle to rotate, so that the polylactic acid raw material and additives in the charging cylinder are mixed and melted under the high-temperature adjustment of heating. After the polylactic acid raw material in one charging cylinder is melted, the hydraulic cylinder pulls the active disk cover and the stirring paddle to rise, pulls out the positioning insertion rod, then rotates the bearing column 180 degrees, and reinstalls the positioning insertion rod for positioning. After that, the polylactic acid raw material in another charging cylinder can be mixed and melted in the same way. The polylactic acid raw material mixed and melted in the previous charging cylinder is naturally cooled at room temperature.

[0031] Please refer to Figure 4 , there are two through holes 19 arranged inside the bottom turntable 17. The two through holes 19 are symmetrically distributed about the center point of the bottom turntable 17. A positioning slot 18 is arranged on one side of the central circular groove 20. The positioning slot 18 and the carrier plate 5 are of an integral structure. The two through holes 19 arranged inside the bottom turntable 17 function in cooperation with the positioning slot 18.

[0032] Please refer to Figure 4 , a positioning insertion rod 16 is inserted and installed inside the positioning slot 18 and one through hole 19. The bottom turntable 17 is positioned and connected to the carrier plate 5 through the positioning insertion rod 16. The positioning insertion rod 16 inserted and installed inside the positioning slot 18 and one through hole 19 functions for insertion and positioning.

[0033] Please refer to Figure 1 , a driving motor 11 is arranged at the center position of the top of the active disk cover 8. The output shaft of the driving motor 11 is welded to the central axis of the stirring paddle 9. The driving motor 11 arranged at the center position of the top of the active disk cover 8 functions to drive the stirring paddle 9 to rotate.

[0034] Please refer toFigure 1 and Figure 2 On both sides of the power supply box 6, switches 7 are respectively arranged. The output end of the power supply box 6 is electrically connected to the input end of the switch 7, and the output end of the switch 7 is electrically connected to the input end of the electric heating plate 15. The switches 7 respectively arranged on both sides of the power supply box 6 play a role in controlling the start and stop of the power supply to the electric heating plate 15.

[0035] Please refer to Figure 1 At one end of the piston rod of the hydraulic cylinder 14, a connecting disc 10 is welded. The connecting disc 10 is welded and connected to the movable disc cover 8 through a connecting rod. The connecting disc 10 welded at one end of the piston rod of the hydraulic cylinder 14 plays a role in connecting the movable disc cover 8 and the hydraulic cylinder 14.

[0036] Please refer to Figure 4 At the lower end of the inner connecting shaft 22, a positioning shaft disc 23 is welded. The size of the positioning shaft disc 23 is larger than the diameter of the bearing seat 21. The positioning shaft disc 23 welded at the lower end of the inner connecting shaft 22 plays a role in positioning and preventing detachment.

[0037] Working principle: During use, put the polylactic acid raw materials and additives to be smelted into the two charging cylinders 3. Then, drive the movable disc cover 8 to move downward through the hydraulic cylinder 14. The movable disc cover 8 covers the upper end of one charging cylinder 3, and the stirring paddle 9 is inserted into the charging cylinder 3. Then, press the switch 7 to make the power supply box 6 supply power to the electric heating plate 15 inside one heating round seat 2. After the electric heating plate 15 is powered on, it releases heat and conducts the heat to the charging cylinder 3. Drive the stirring paddle 9 to rotate through the driving motor 11, so that the polylactic acid raw materials and additives in the charging cylinder 3 are subjected to mixing and smelting treatment under the high-temperature adjustment of heating. The movable disc cover 8 and the stirring paddle 9 are made of non-heat-conducting steel, which does not affect the normal use of the driving motor 11. After the polylactic acid raw materials in one charging cylinder 3 are smelted, the hydraulic cylinder 14 pulls the movable disc cover 8 and the stirring paddle 9 to rise, pull out the positioning insertion rod 16, then rotate the bearing column 4 by 180 degrees, and reinstall the positioning insertion rod 16 for positioning. After that, the polylactic acid raw materials in the other charging cylinder 3 can be subjected to mixing and smelting treatment in the same way. The polylactic acid raw materials mixed and smelted in the previous charging cylinder 3 are cooled at natural room temperature without waiting for cooling before smelting, which improves the smelting efficiency of the polylactic acid material and completes the use of the smelting device for the preparation of the polylactic acid material.

[0038] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A smelting device for the preparation of polylactic acid materials, including a processing platform (1). At the upper end of the processing platform (1), there are two heating round seats (2). Between the two heating round seats (2), there is a carrier tray (5). The carrier tray (5) and the processing platform (1) are of an integral structure. At the front end position of the carrier tray (5), there is a power supply box (6). It is characterized in that: It also includes: An electric heating plate (15), which is arranged inside the heating round seat (2). And on the upper end of the electric heating plate (15), there is a charging cylinder (3) placed. The charging cylinder (3) is inserted and installed inside the heating round seat (2). Above the charging cylinder (3), there is a movable disc cover (8). Below the movable disc cover (8), there is a stirring paddle (9). A bottom rotating disc (17), which is arranged above the carrier tray (5). And on the upper end of the bottom rotating disc (17), there is a bearing column (4) welded. On the outer wall of the top end of the bearing column (4), there is an extension support rod (12) welded. At one end of the extension support rod (12), there is an end seat plate (13) welded. On the upper end of the end seat plate (13), there is a hydraulic cylinder (14). A central circular groove (20), which is arranged inside the carrier tray (5). And inside the central circular groove (20), there is a bearing seat (21) fixed by screws. At the bottom center position of the bottom rotating disc (17), there is an inner connecting shaft (22) welded. The inner connecting shaft (22) is rotationally connected to the carrier tray (5) through the bearing seat (21).

2. The smelting device for preparing polylactic acid materials according to claim 1, wherein: Inside the bottom rotating disc (17), there are two through holes (19). The two through holes (19) are symmetrically distributed about the center point of the bottom rotating disc (17). On one side of the central circular groove (20), there is a positioning slot (18). The positioning slot (18) and the carrier tray (5) are of an integral structure.

3. The smelting device for preparing polylactic acid materials according to claim 2, wherein: Inside the positioning slot (18) and one through hole (19), there is a positioning rod (16) inserted. The bottom rotating disc (17) is positioned and connected to the carrier tray (5) through the positioning rod (16).

4. A melting device for preparing polylactic acid materials according to claim 1, characterized in that: At the top center position of the movable disc cover (8), there is a driving motor (11). The output shaft of the driving motor (11) is welded to the central axis of the stirring paddle (9).

5. A melting device for preparing polylactic acid materials according to claim 1, characterized in that: On both sides of the power supply box (6), there are switches (7) respectively. The output end of the power supply box (6) is electrically connected to the input end of the switch (7). The output end of the switch (7) is electrically connected to the input end of the electric heating plate (15).

6. The smelting device for preparing polylactic acid materials according to claim 1, characterized in that: At one end of the piston rod of the hydraulic cylinder (14), there is a connecting disc (10) welded. The connecting disc (10) is welded to the movable disc cover (8) through a connecting rod.

7. A smelting device for preparing polylactic acid materials according to claim 1, characterized in that: At the lower end of the inner connecting shaft (22), there is a clamping shaft disc (23) welded. The size of the clamping shaft disc (23) is larger than the diameter of the bearing seat (21).

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