Waste plastic melt extruder

Abstract

The utility model relates to the technical field of plastic processing, in particular to a waste plastic melt extruder which can clean dust attached to crushed waste plastic and improve the quality of regenerated plastic products. Comprising an extruder; the pulverizer is installed on the dust removal box, the discharging pipe is installed at an output port of the pulverizer, the output end of the discharging pipe extends into the upper portion of the left end of a cavity of the dust removal box, the screen drum is obliquely and rotationally installed in the cavity of the dust removal box and is conical, and the opening end of the screen drum is higher than the closing end of the screen drum; the output end of the discharging pipe extends out of the open end of the screen drum, the driving shaft is concentrically installed in the screen drum, one end of the driving shaft extends out of the dust removal box, the driving motor is installed on the outer wall of the dust removal box, and an output shaft of the driving motor is in transmission connection with the driving shaft. And a feeding hole of the extruder is positioned below the closing end of the screen drum.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic processing especially to a waste plastic melting extruder. BACKGROUND

[0002] Waste plastics can be melted and reused after being crushed, and the existing technology discloses a kind of extruder for waste plastic processing, the extruder can be pre-crushed by pre-crushing device, and then enter the barrel to carry out foundation, prevent the waste plastics of relatively large volume from directly entering the barrel and cause the condition of incomplete plasticization, improve the effect and efficiency of waste plastic regenerated product;First, waste plastics are poured into the inside of crushing box from feeding hopper, the first drive motor is started by controller, so that transmission wheel and transmission belt are driven, and because two bevel gears are engaged with each other, two bevel gears are synchronously and reversely rotated, so that two crushing shaft rollers are reversely rotated, and waste plastics are crushed, the crushed plastics are in the barrel, the conveying shaft roller is rotated by the operation of second drive motor, so that the spiral conveying disc of conveying section conveys plastics, and when plastics enter cutting section, plastics can be further crushed by conveying cutting piece, finally, plastics are extruded by conveying cutting piece and extrusion ring, and are compressed, finally, extruded from forming machine head, for subsequent processing.

[0003] But the above-mentioned extruder does not clean the dust attached to the crushed waste plastics, the dust and waste plastics enter the extruder together, which leads to the decline of the quality of regenerated plastic products. UTILITY MODEL CONTENT

[0004] To solve the above technical problems, the utility model provides a kind of waste plastic melting extruder, which can clean the dust attached to the crushed waste plastics, and improve the quality of regenerated plastic products.

[0005] The utility model discloses a kind of waste plastics melt extruders, including extruder;Still including dust removal box, pulverizer, discharge pipe, screen cylinder, drive shaft and drive motor, the inside of dust removal box is provided with chamber, pulverizer is installed on dust removal box, the output of pulverizer installs discharge pipe, the output end of discharge pipe is inserted into the chamber left end upper portion of dust removal box, screen cylinder is obliquely rotatably installed in the chamber of dust removal box, screen cylinder is conical, the opening end of screen cylinder is higher than the close end, the output end of discharge pipe is stretched into the opening end of screen cylinder, drive shaft is concentrically installed in the inside of screen cylinder, one end of drive shaft is stretched outside dust removal box, drive motor is installed on the outer wall of dust removal box, the output shaft of drive motor is drivingly connected with drive shaft, the feed inlet of extruder is inserted into the chamber bottom of dust removal box, and the feed inlet of extruder is located below the close end of screen cylinder;When working, waste plastics are put into pulverizer, waste plastics are crushed by pulverizer and then input into the opening end of screen cylinder through discharge pipe, drive motor drives drive shaft to rotate, drive shaft drives screen cylinder to rotate, screen cylinder drives crushed waste plastics to tumble, so that dust attached to waste plastics collides and falls down and falls into the chamber bottom of dust removal box through the screen hole of screen cylinder, due to the oblique arrangement of screen cylinder, crushed waste plastics are transported to the close end of screen cylinder and output, so that crushed waste plastics are input into the feed inlet of extruder, and the crushed waste plastics are heated and melted by extruder and then extruded for secondary injection molding, compared with prior art, dust attached to crushed waste plastics can be cleaned, and the quality of regenerated plastic products is improved.

[0006] Preferably, it further includes a guide arc plate, which is installed in the chamber of the dust removal box, located at the opening end of the screen cylinder, and has a sliding contact with the opening end of the screen cylinder; the guide arc plate guides the crushed waste plastics output by the discharge pipe into the opening end of the screen cylinder, avoiding the crushed waste plastics from falling outside the screen cylinder, and improving the screening effect of the screen cylinder.

[0007] Preferably, it further includes a small crushing roller and a large crushing roller, and the large crushing roller is provided with at least two, and the diameter of the large crushing roller is larger than that of the small crushing roller; both the large crushing roller and the small crushing roller are rotatably installed in the pulverizer, and the two large crushing rollers are located at the two sides of the small crushing roller; the small crushing roller and the large crushing roller crush the waste plastics entering the pulverizer, and since the two large crushing rollers have a larger diameter and are located at the two sides of the small crushing roller, the waste plastics are gathered between the two large crushing rollers, facilitating the cooperation of the large crushing roller and the small crushing roller in crushing the waste plastics, and improving the crushing effect.

[0008] Preferably, the dust removal box further comprises a duct and a fan, the duct is installed on the side wall of the dust removal box near the closed end of the screen cylinder, the duct is communicated with the chamber of the dust removal box, the fan is installed in the duct, the fan sends air into the chamber of the dust removal box through the duct, and the dust outlet is arranged on the side wall of the dust removal box near the open end of the screen cylinder; the fan sends air into the chamber of the dust removal box through the duct, so that the wind force flows against the direction of conveying of the waste plastic powder in the screen cylinder, and the wind force carries the small particles of dust floating to be discharged through the dust outlet, thereby improving the dust removal effect.

[0009] Preferably, the dust removal box further comprises a dust collection box and a filter cloth, the dust collection box is installed on the side wall of the dust removal box near the open end of the screen cylinder, the inlet of the dust collection box is connected with the dust outlet of the dust removal box, and the filter cloth is installed in the dust collection box; the small particles of dust discharged from the dust outlet of the dust removal box enter the dust collection box, the filter cloth intercepts and adsorbs the small particles of dust, and air pollution caused by diffusion of the small particles of dust is avoided.

[0010] Preferably, the adjusting plate further comprises a plurality of extrusion holes, the two T-shaped sliding rails are installed on the back surface of the adjusting plate, the two T-shaped sliding grooves are arranged on the extrusion outlet end surface of the extruder, the two T-shaped sliding grooves are matched with the two T-shaped sliding rails respectively, the two T-shaped sliding rails are slidably inserted into the two T-shaped sliding grooves respectively, and the sealing joint is installed on the front end surface of the adjusting plate; the two T-shaped sliding rails are slidably inserted into the two T-shaped sliding grooves, so that the adjusting plate is movably installed on the extrusion outlet end surface of the extruder; different extrusion holes are aligned with the extrusion outlet of the extruder by moving the adjusting plate, different discharging effects are realized, the melted waste plastics are conveyed to the injection mold through the sealing joint, and the practicability is improved.

[0011] Preferably, the adjusting plate further comprises a push rod, the fixed end of the push rod is installed on the adjusting plate, the piston rod of the push rod is connected with the extruder, and the push rod is parallel to the T-shaped sliding rail; the piston rod of the push rod is extended and retracted to drive the adjusting plate to move, so that the extrusion hole corresponding to the adjusting plate is aligned with the extrusion outlet of the extruder, and the automatic adjustment of the discharging effect is realized.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: when working, the waste plastics are put into the pulverizer, the waste plastics are crushed by the pulverizer and input into the open end of the screen cylinder through the discharge pipe, the driving motor drives the driving shaft to rotate, the driving shaft drives the screen cylinder to rotate, the screen cylinder drives the crushed waste plastics to tumble, so that the dust attached to the waste plastics collides and falls down and falls into the bottom of the chamber of the dust removal box through the screen hole of the screen cylinder, due to the inclined arrangement of the screen cylinder, the crushed waste plastics are transported to the closed end of the screen cylinder and output, so that the crushed waste plastics are input into the feed inlet of the extruder, the extruder melts and extrudes the crushed waste plastics for recycling, compared with the prior art, the dust attached to the crushed waste plastics can be cleaned, and the quality of the regenerated plastic products is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structural schematic view of the utility model;

[0014] Figure 2 is a front sectional structural schematic view of the utility model;

[0015] Figure 3 is an axonometric structural schematic view of the utility model;

[0016] Figure 4 is a structural schematic view of the utility model in the disassembled state;

[0017] Figure 5 is a structural schematic view of the sieve cylinder, drive shaft, drive motor and flow guide arc plate etc.

[0018] Markings in the drawing: 1, extruder;2, dust removal box;3, pulverizer;4, discharge pipe;5, sieve cylinder;6, drive shaft;7, drive motor;8, flow guide arc plate;9, small pulverizing roller;10, large pulverizing roller;11, culvert;12, fan;13, dust collection box;14, filter cloth;15, adjusting plate;16, T-shaped sliding rail;17, T-shaped sliding groove;18, sealing joint;19, push rod. DETAILED DESCRIPTION

[0019] In order to facilitate understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. The utility model can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0020] Example 1

[0021] As Figures 1 to 5As shown, a waste plastic melting extruder, comprising an extruder 1; further comprising a dust removal box 2, a crusher 3, a discharge pipe 4, a screen cylinder 5, a drive shaft 6 and a drive motor 7, the inside of the dust removal box 2 is provided with a chamber, the crusher 3 is installed on the dust removal box 2, the output port of the crusher 3 is installed on the discharge pipe 4, the output end of the discharge pipe 4 extends into the upper left end of the chamber of the dust removal box 2, the screen cylinder 5 is obliquely rotatably installed in the chamber of the dust removal box 2, the screen cylinder 5 is conical, the opening end of the screen cylinder 5 is higher than the closing end, the output end of the discharge pipe 4 extends out of the opening end of the screen cylinder 5, the drive shaft 6 is concentrically installed in the inside of the screen cylinder 5, one end of the drive shaft 6 extends out of the outside of the dust removal box 2, the drive motor 7 is installed on the outer wall of the dust removal box 2, the output shaft of the drive motor 7 is in transmission connection with the drive shaft 6, the feed inlet of the extruder 1 extends into the bottom of the chamber of the dust removal box 2, the feed inlet of the extruder 1 is located below the closing end of the screen cylinder 5; further comprising a flow guide arc plate 8, the flow guide arc plate 8 is installed in the chamber of the dust removal box 2, the flow guide arc plate 8 is located at the opening end of the screen cylinder 5, the edge of the flow guide arc plate 8 is in sliding contact with the opening end of the screen cylinder 5; further comprising a small crushing roller 9 and a large crushing roller 10, the large crushing roller 10 is provided with at least two, the diameter of the large crushing roller 10 is larger than that of the small crushing roller 9, the large crushing roller 10 and the small crushing roller 9 are both rotatably installed in the crusher 3, the two large crushing rollers 10 are located on both sides of the small crushing roller 9.

[0022] In work, the waste plastic is put into the crusher 3, the small crushing roller 9 and the large crushing roller 10 rotate to crush the waste plastic entering the crusher 3, since the two large crushing rollers 10 are larger in diameter and located on both sides of the small crushing roller 9, the waste plastic is gathered between the two large crushing rollers 10, which facilitates the cooperation of the large crushing roller 10 and the small crushing roller 9 to crush the waste plastic, the crushing effect is good, the waste plastic crushed by the crusher 3 is input into the opening end of the screen cylinder 5 through the discharge pipe 4, the flow guide arc plate 8 guides the waste plastic powder output by the discharge pipe 4 into the opening end of the screen cylinder 5, avoiding the waste plastic powder from falling outside the screen cylinder 5, the drive motor 7 drives the drive shaft 6 to rotate, the drive shaft 6 drives the screen cylinder 5 to rotate, the screen cylinder 5 drives the crushed waste plastic to tumble, so that the dust attached to the waste plastic collides and falls down and falls into the bottom of the chamber of the dust removal box 2 through the screen hole of the screen cylinder 5, since the screen cylinder 5 is arranged obliquely, the crushed waste plastic is transported to the closing end of the screen cylinder 5 and output, so that the crushed waste plastic is input into the feed inlet of the extruder 1, the extruder 1 melts and extrudes the crushed waste plastic after heating to be used for injection molding again, compared with the prior art, the dust attached to the crushed waste plastic can be cleaned, and the quality of the regenerated plastic product is improved.

[0023] Embodiment 2

[0024] As Figures 1 to 4As shown, on the basis of example 1, it further comprises a duct 11 and a fan 12, the duct 11 is installed on the side wall of the dust removal box 2 near the closed end of the screen cylinder 5, the duct 11 communicates with the chamber of the dust removal box 2, the fan 12 is installed in the duct 11, the fan 12 sends air to the chamber of the dust removal box 2 through the duct 11, and the dust outlet is arranged on the side wall of the dust removal box 2 near the open end of the screen cylinder 5; It further comprises a dust collection box 13 and a filter cloth 14, the dust collection box 13 is installed on the side wall of the dust removal box 2 near the open end of the screen cylinder 5, the inlet of the dust collection box 13 is connected with the dust removal port of the dust removal box 2, and the filter cloth 14 is installed in the dust collection box 13.

[0025] The fan 12 runs to send air to the chamber of the dust removal box 2 through the duct 11, so that the wind force flows against the direction of the waste plastic powder conveying in the screen cylinder 5, so that the wind force carries the small particle dust floating by the dust outlet, and the small particle dust discharged from the dust removal port of the dust removal box 2 enters the dust collection box 13, and the filter cloth 14 intercepts and adsorbs the small particle dust, avoiding the spread of the small particle dust to cause air pollution.

[0026] Example 3

[0027] As Figures 1 to 4 shown, on the basis of example 1, it further comprises an adjusting plate 15, a T-shaped sliding rail 16, a T-shaped sliding groove 17 and a sealing joint 18, the adjusting plate 15 is provided with a plurality of extrusion holes, the diameters of the plurality of extrusion holes are different, the back surface of the adjusting plate 15 is provided with two T-shaped sliding rails 16, the extrusion outlet end surface of the extruder 1 is provided with two T-shaped sliding grooves 17, the two T-shaped sliding grooves 17 are matched with the two T-shaped sliding rails 16 respectively, the two T-shaped sliding rails 16 are slidingly inserted into the two T-shaped sliding grooves 17 respectively, and the front end surface of the adjusting plate 15 is provided with a sealing joint 18; It further comprises a push rod 19, the fixed end of the push rod 19 is installed on the adjusting plate 15, the piston rod of the push rod 19 is connected with the extruder 1, and the push rod 19 is parallel to the T-shaped sliding rail 16.

[0028] The two T-shaped sliding rails 16 are slidingly inserted into the two T-shaped sliding grooves 17, so that the adjusting plate 15 is movably installed on the extrusion outlet end surface of the extruder 1, the piston rod of the push rod 19 is extended and retracted to push the adjusting plate 15 to move, so that the adjusting plate 15 is aligned with the extrusion outlet of the extruder 1 through the corresponding extrusion hole, different discharging effects are realized, the melted waste plastic is conveyed to the injection mold through the sealing joint 18, and the automatic adjustment of the discharging effect is realized.

[0029] As Figures 1 to 5As shown, the waste plastic melting extruder, when working, firstly, the waste plastics are put into the pulverizer 3, the waste plastics are crushed by the large crushing roller 10 and the small crushing roller 9 and then input into the open end of the screen cylinder 5 through the discharge pipe 4, then the driving motor 7 drives the driving shaft 6 to rotate, the driving shaft 6 drives the screen cylinder 5 to rotate, the screen cylinder 5 drives the crushed waste plastics to tumble, so that the dust attached to the waste plastics collides and falls down and falls into the cavity bottom of the dust removal box 2 through the screen hole of the screen cylinder 5, then, due to the inclined arrangement of the screen cylinder 5, the crushed waste plastics are transported to and output from the close end of the screen cylinder 5, so that the crushed waste plastics are input into the feeding port of the extruder 1, in the process, the fan 12 runs to send air to the cavity of the dust removal box 2 through the duct 11, so that the air flows against the direction of the waste plastic powder transportation in the screen cylinder 5, so that the air carries the small particle dust floating to be discharged through the dust outlet, the small particle dust enters the dust collection box 13, the filter cloth 14 intercepts and adsorbs the small particle dust, air pollution caused by the diffusion of the small particle dust is avoided, and finally the extruder 1 heats and melts the crushed waste plastics and then extrudes and transports the same to the injection mold through the sealing joint 18.

[0030] The main functions realized by the utility model are as follows:

[0031] 1. The dust attached to the crushed waste plastics can be cleaned, and the quality of the regenerated plastic products is improved.

[0032] 2. The small particle dust can be discharged through the dust outlet and intercepted and adsorbed, and air pollution caused by the diffusion of the small particle dust is avoided.

[0033] 3. Different extrusion holes can be adjusted to realize different discharge effects.

[0034] The waste plastic melting extruder is installed, connected or arranged in a common mechanical manner, and as long as the beneficial effects can be achieved, the waste plastic melting extruder can be implemented; the extruder 1, the pulverizer 3, the screen cylinder 5, the driving shaft 6, the driving motor 7, the small crushing roller 9, the large crushing roller 10, the duct 11, the fan 12, the dust collection box 13, the filter cloth 14, the T-shaped sliding rail 16, the push rod 19 and the sealing joint 18 of the waste plastic melting extruder are purchased on the market, and the technical personnel in the industry only need to install and operate according to the attached instruction manual, and the technical personnel in the field do not need to pay creative labor.

[0035] All the technical and scientific terms used in the present application have the same meaning as that understood by the technical personnel belonging to the technical field of the utility model. The terms used in the specification of the utility model are only for the purpose of describing the specific embodiments and are not intended to limit the utility model. The term "and / or" used in the present application includes any and all combinations of one or more related listed items.

[0036] The above merely describes the preferred embodiments of the present application, and it should be noted that, for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. A waste plastic melt extruder, comprising an extruder (1); characterized in that, It also includes a dust collector (2), a crusher (3), a discharge pipe (4), a screen cylinder (5), a drive shaft (6), and a drive motor (7). The dust collector (2) has an internal chamber. The crusher (3) is installed on the dust collector (2). The discharge pipe (4) is installed at the output port of the crusher (3). The output end of the discharge pipe (4) extends into the upper left end of the chamber of the dust collector (2). The screen cylinder (5) is installed in the chamber of the dust collector (2) with an inclined rotation. The screen cylinder (5) is conical. The opening end of the screen cylinder (5) is... Above the closing end, the output end of the discharge pipe (4) extends out into the opening end of the screen cylinder (5). The drive shaft (6) is concentrically installed inside the screen cylinder (5). One end of the drive shaft (6) extends out of the outside of the dust collector (2). The drive motor (7) is installed on the outer wall of the dust collector (2). The output shaft of the drive motor (7) is connected to the drive shaft (6) for transmission. The feed port of the extruder (1) extends into the bottom of the chamber of the dust collector (2). The feed port of the extruder (1) is located below the closing end of the screen cylinder (5).

2. The waste plastic melt extruder as described in claim 1, characterized in that, It also includes a flow guide arc plate (8), which is installed in the chamber of the dust collector (2). The flow guide arc plate (8) is located at the open end of the screen cylinder (5), and the edge of the flow guide arc plate (8) slides in contact with the open end of the screen cylinder (5).

3. The waste plastic melt extruder as described in claim 1, characterized in that, It also includes a small crushing roller (9) and a large crushing roller (10). At least two large crushing rollers (10) are provided. The diameter of the large crushing roller (10) is larger than the diameter of the small crushing roller (9). Both the large crushing roller (10) and the small crushing roller (9) are rotatably installed in the crusher (3). The two large crushing rollers (10) are located on both sides of the small crushing roller (9).

4. The waste plastic melt extruder as described in claim 1, characterized in that, It also includes a duct (11) and a fan (12). The duct (11) is installed on the side wall of the dust collector (2) near the closing end of the screen cylinder (5). The duct (11) is connected to the chamber of the dust collector (2). The fan (12) is installed in the duct (11). The fan (12) sends air into the chamber of the dust collector (2) through the duct (11). A dust outlet is provided on the side wall of the dust collector (2) near the opening end of the screen cylinder (5).

5. The waste plastic melt extruder as described in claim 4, characterized in that, It also includes a dust collection box (13) and a filter cloth (14). The dust collection box (13) is installed on the side wall of the dust collector (2) near the opening end of the screen cylinder (5). The inlet of the dust collection box (13) is connected to the dust collection port of the dust collector (2). The filter cloth (14) is installed in the dust collection box (13).

6. The waste plastic melt extruder as described in claim 1, characterized in that, It also includes an adjustment plate (15), a T-shaped slide rail (16), a T-shaped groove (17), and a sealing joint (18). The adjustment plate (15) is provided with multiple extrusion holes with different diameters. Two T-shaped slide rails (16) are installed on the back of the adjustment plate (15). Two T-shaped grooves (17) are provided on the extrusion port end face of the extruder (1). The two T-shaped grooves (17) are matched with the two T-shaped slide rails (16) respectively. The two T-shaped slide rails (16) are slidably inserted into the two T-shaped grooves (17) respectively. A sealing joint (18) is installed on the front end face of the adjustment plate (15).

7. The waste plastic melt extruder as described in claim 6, characterized in that, It also includes a push rod (19), the fixed end of which is mounted on the adjusting plate (15), the piston rod of which is connected to the extruder (1), and the push rod (19) is parallel to the T-shaped slide rail (16).

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