Screw extrusion structure for melting plastic bottle pieces

Abstract

The utility model relates to a screw extrusion structure for melting plastic bottle pieces. The screw extrusion structure comprises a conveying charging barrel, a charging frame and a distributing rod, a feeding frame is arranged on one side of the conveying charging barrel, an inner cavity is formed in the feeding frame, and a material distributing rod is installed in the inner cavity and divides the inner cavity into a plurality of areas. An inner cavity is formed in the conveying barrel, the distributing rod is rotatably arranged in the inner cavity, the inner cavity is communicated with the conveying barrel, an extrusion screw is arranged in the conveying barrel, the extrusion screw is rotatably arranged in the conveying barrel, and a discharge port is formed in the tail end of the conveying barrel; the outer side of the conveying charging barrel is sleeved with a heating mechanism, and the plastic bottle pieces are heated through the heating mechanism; during working, plastic bottle pieces are poured into the feeding frame, the material distributing rod is driven to rotate in the inner cavity, the bottle pieces are quantitatively conveyed at a constant speed through the material distributing rod, and meanwhile the extrusion screw is rotated to enable the plastic bottle pieces to be conveyed in the conveying material barrel and fused through the heating mechanism. The feeding device disclosed by the utility model has the beneficial effects that the feeding hole is prevented from being blocked during feeding, and molten liquid can be filtered.

Description

TECHNICAL FIELD

[0001] The utility model relates to plastic bottle piece processing technical field, especially a screw extrusion structure of plastic bottle piece melting treatment. BACKGROUND

[0002] After a large number of plastic bottle pieces are cleaned by washing and rinsing to remove impurities such as stones, wood chips and iron filings, and dirt on the bottle pieces, clean plastic bottle pieces are obtained, which are then dried by a drying mechanism and then melted by a screw extruder with a heating structure for subsequent processing and use.

[0003] However, the current screw extrusion structure is relatively simple, usually a rotatable auger, i.e. an extrusion screw, is arranged in the sleeve to convey and compact the plastic bottle pieces poured into the sleeve, and then heated and melted by an external heating mechanism. However, the feed inlet of the existing screw extrusion structure is relatively narrow and short, and when the plastic bottle pieces are poured in, it is easy to cause blockage at the feed inlet, which hinders the work process and reduces the work efficiency. In addition, some plastic bottle pieces are not completely melted after melting, which affects the flowability of the molten liquid and the subsequent processing. At the same time, the existing device cannot be moved, which is not convenient to use and has a small range of application.

[0004] Therefore, based on the feedback of the existing device, the inventor has further improved the defects and deficiencies to overcome the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the shortcomings of the prior art, providing a screw extrusion structure for plastic bottle piece melting treatment, which can avoid blockage during feeding, improve work efficiency, and filter the molten liquid to avoid the presence of unmelted bottle pieces in the molten liquid, affecting the fluidity.

[0006] The utility model achieves the above-mentioned purpose by the following technical scheme: a screw extrusion structure for plastic bottle piece melting treatment, comprising a conveying barrel, a feeding frame and a distribution rod.

[0007] The conveying barrel is provided with a feeding frame on one side, the feeding frame is provided with an inner cavity, a distribution rod is installed in the inner cavity, and the distribution rod divides the inner cavity into multiple areas; the distribution rod is rotatably arranged in the inner cavity, the inner cavity is in communication with the conveying barrel, and an extrusion screw is arranged in the conveying barrel, which is rotatably arranged in the conveying barrel; an outlet is also provided at the tail end of the conveying barrel; a heating mechanism is arranged outside the conveying barrel to heat and melt the plastic bottle pieces.

[0008] In work, a large number of plastic bottle pieces are poured into the feeding frame, the material distributing rod is driven to rotate in the cavity, the plastic bottle pieces separated to each area are fallen into the material conveying barrel under the driving of the material distributing rod, the plastic bottle pieces are quantitatively and constant-speed conveyed through the material distributing rod, and the extruding screw is rotated to make the plastic bottle pieces conveyed in the material conveying barrel and melted through the heating mechanism.

[0009] As the preferred technical scheme of the application, the material conveying barrel is a long cylindrical barrel, and the extruding screw is inserted into the material conveying barrel and arranged coaxially with the material conveying barrel.

[0010] As the preferred technical scheme of the application, one end of the extruding screw penetrates through the side wall of the circular face of the material conveying barrel and is provided with a motor B, the motor B is driven to rotate the extruding screw to convey the plastic bottle pieces.

[0011] As the preferred technical scheme of the application, the feeding frame is provided with a feeding port above, and the plastic bottle pieces are poured into the cavity through the feeding port.

[0012] As the preferred technical scheme of the application, the material distributing rod comprises a rotating main rod and a rectangular fan blade, the rotating main rod is rotatably connected with the cavity, two ends of the rotating main rod are connected with front and rear frame faces of the feeding frame respectively, and one end of the rotating main rod penetrates through the frame face and is connected with the motor A, and four rectangular fan blades are fixedly connected with the rotating main rod, and the cavity is divided into four areas through the rectangular fan blades.

[0013] As the preferred technical scheme of the application, the cavity is cylindrical, and the edge of the rectangular fan blade is arc-shaped, and the edge is matched with the inner wall of the cavity.

[0014] As the preferred technical scheme of the application, the heating mechanism comprises a plurality of heating rings, the plurality of heating rings are coaxially arranged, and the plurality of heating rings are arranged outside the material conveying barrel along the length direction of the material conveying barrel, and the plastic bottle pieces conveyed by the extruding screw are high-temperature heated.

[0015] As the preferred technical scheme of the application, the discharging port is provided with a discharging cylinder, a filter plate is matched and arranged on the discharging cylinder, a plurality of through holes only allowing the molten liquid of the plastic bottle pieces to pass through are arranged on the filter plate, the molten liquid flows into the discharging cylinder and is filtered through the filter plate, and the bottle pieces not melted are left on the filter plate.

[0016] The utility model has the following advantages:

[0017] (1) the feeding can avoid the blockage, and the working efficiency is improved;

[0018] The existing feeding port of the screw extrusion structure is relatively narrow, and plastic bottle pieces are prone to blockage at the feeding port position, so that the working process is hindered, and the working efficiency is relatively low; in the scheme, the feeding frame and the distributing rod are arranged, the distributing rod capable of rotating is arranged in the inner cavity of the feeding frame, the distributing rod rotates in the inner cavity to quantitatively and constant-speed convey plastic bottle pieces into the feeding barrel, so that blockage at the feeding position is avoided;

[0019] (2) The molten liquid is filtered to avoid the existence of un-melted bottle pieces in the molten liquid;

[0020] The molten liquid of the plastic bottle pieces conveyed by the screw in the feeding barrel and heated by the external heating mechanism is extruded and conveyed to the discharging port, but the plastic bottle pieces have a probability of not being completely melted, and direct discharging will affect the fluidity of the molten liquid and affect subsequent processing and shaping; therefore, the discharging cylinder with a filter plate is designed at the discharging port position, the molten liquid is filtered, the incompletely melted bottle pieces are left in the discharging cylinder, and the fluidity of the molten liquid is improved; since the discharging cylinder is detachable, the discharging cylinder can be taken down and the bottle pieces are melted again, so that the waste of raw materials is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure schematic view of a first perspective of the utility model;

[0022] Figure 2 It is a structure schematic view of a half-face section view perspective of the utility model;

[0023] Figure 3 It is a structure schematic view of a top view perspective of the utility model;

[0024] Figure 4 It is a structure schematic view of a half-face section view perspective of the feeding barrel of the utility model;

[0025] Figure 5 It is a structure schematic view of the feeding barrel after the heating ring is installed;

[0026] Figure 6 It is a structure schematic view of the extrusion screw;

[0027] Figure 7 It is a structure schematic view of a first perspective of the feeding frame of the utility model;

[0028] Figure 8 It is a structure schematic view of the distributing rod of the utility model;

[0029] Figure 9 It is a structure schematic view of a half-face section view perspective of the feeding frame of the utility model;

[0030] In the figure: 1 - feeding cylinder, 2 - feeding frame, 3 - rotating main rod, 4 - rectangular fan blade, 5 - motor A, 6 - motor B, 7 - extrusion screw, 8 - discharging cylinder, 9 - filter plate, 10 - heating ring, 11 - outer cylinder, 12 - support, 13 - roller. DETAILED DESCRIPTION

[0031] The utility model will be described further below in combination with the drawings, but the protection scope of the utility model is not limited to the following.

[0032] It should be noted that the orientation or positional relationship indicated by "left", "right" and the like is based on the orientation or positional relationship shown in the drawings, or is the orientation or positional relationship in which the product of the application is usually placed during use, or is the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only used to facilitate the description of the utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0033] It should be noted that the embodiments in the utility model and the features and technical solutions in the embodiments can be combined with each other without conflict.

[0034] Therefore, based on the above problems, in view of Figure 1 The utility model provides a screw extrusion structure for melting treatment of plastic bottle pieces to solve the problem.

[0035] (Embodiment)

[0036] In view of Figures 1-9 The screw extrusion structure for melting treatment of plastic bottle pieces provided in the embodiment comprises a feeding cylinder 1, a feeding frame 2 and a distribution rod.

[0037] Among them, in view of Figure 1 And Figure 2 The feeding cylinder 1 is arranged on the support 12, and one side of the feeding cylinder 1 is provided with a feeding frame 2. The feeding frame 2 has an inner cavity, and a distribution rod is arranged in the inner cavity. The distribution rod can divide the inner cavity into multiple areas, and a certain amount of plastic bottle pieces is loaded into each area.

[0038] Among them, in view of Figure 1 And Figure 2 The distribution rod is driven by a motor A 5 and is rotatably arranged in the inner cavity. The inner cavity of the distribution frame is connected with the feeding cylinder 1. The feeding frame 2 is provided with a feeding port on the upper side. The plastic bottle pieces enter the inner cavity from the feeding port and are then sent into the feeding cylinder 1 from the inner cavity.

[0039] Among them, in view of Figure 2 And Figure 4The transmission feeding barrel 1 is provided with an extrusion screw 7 driven by a motor B6, and the outer side of the transmission feeding barrel 1 is sleeved with a heating mechanism, the plastic bottle pieces in the transmission feeding barrel 1 are heated by the heating mechanism, and a discharge port is formed at the tail end of the transmission feeding barrel 1, and the molten liquid is discharged from the discharge port.

[0040] In work, first, many plastic bottle pieces are poured into the feeding frame 2 through the feeding port, and at the same time, the motor A5 is driven to rotate the distributing rod, the plastic bottle pieces are separated into several areas in the inner cavity by the continuous rotation of the distributing rod, because the lower end of the inner cavity is communicated with the transmission feeding barrel 1, when the distributing rod rotates to one of the areas and is aligned with the communication port, the plastic bottle pieces fall into the transmission feeding barrel 1 due to gravity, at this time, the motor B6 is driven, the plastic bottle pieces in the transmission feeding barrel 1 are extruded and melted by the extrusion screw 7 and the heating mechanism, and the molten plastic bottle piece melt is extruded from the discharge port.

[0041] The existing screw extrusion device for melting plastic bottle pieces is simple in structure, the feeding port is relatively short and narrow, and after a large amount of plastic bottle pieces are poured in, the feeding port position is easily blocked, affecting subsequent processing, and the overall work efficiency is reduced; the present scheme designs a screw extrusion structure for plastic bottle piece melting treatment, a feeding frame 2 is installed at the feeding port position of the screw transmission extrusion transmission feeding barrel 1, the feeding frame 2 is provided with a rotatable distributing rod, the distributing rod can quantitatively and uniformly convey plastic bottle pieces into the barrel, avoid causing the feeding port to be blocked, improve the work efficiency, and can control the melting amount of the bottle pieces, make the whole working process more safe and effective.

[0042] It should be noted that, in the present scheme, a large amount of plastic bottle pieces are poured at one time through the feeding frame 2, and the plastic bottle pieces are uniformly, quantitatively and uniformly conveyed into the transmission feeding barrel 1 for melting treatment through the rotation of the distributing rod, and after melting, the next step such as blow molding can be carried out, and the whole process is automatically operated, greatly reducing the manual operation steps and processing time.

[0043] In the embodiment, referring to Figures 1-2 and Figure 4 For the transmission feeding barrel 1, the transmission feeding barrel 1 is a long cylindrical barrel structure, the barrel is hollow and a extrusion screw 7 is inserted and mounted, the extrusion screw 7 is coaxially arranged with the transmission feeding barrel 1, and the length of the extrusion screw 7 is equal to the length of the long cylindrical barrel, the left end of the extrusion screw 7 penetrates through the left side of the transmission feeding barrel 1 and the penetrating end is connected with the motor B6, the motor B6 is driven to drive the extrusion screw 7 to rotate, conveying the plastic bottle pieces from the left end to the right end; a through hole is formed in the left side upper part of the transmission feeding barrel 1, and the lower side of the feeding frame 2 is fixedly connected with the transmission feeding barrel 1 through the through hole, that is, the feeding frame 2 is vertically connected to the left side of the transmission feeding barrel 1.

[0044] Further, the outer side of the conveying barrel 1 is also fixedly sleeved with a heating mechanism, the heating mechanism comprising an outer cylinder 11 and a plurality of heating rings 10, the plurality of heating rings 10 being coaxially arranged and spaced apart from each other, and the plurality of heating rings 10 being sleeved on the outer side of the conveying barrel 1 along the length direction of the conveying barrel 1 to heat the plastic bottle pieces conveyed by the extrusion screw 7 at high temperature; the outer cylinder 11 is installed on the outer side of the plurality of heating rings 10, the outer cylinder 11 wrapping the heating rings 10 and the conveying barrel 1, and the outer cylinder 11 plays a role of heat insulation and support protection.

[0045] It should be noted that the heating ring 10 is an electric heating type heating ring 10, which can heat the plastic bottle pieces conveyed in all directions at high temperature, and efficiently and quickly melt the plastic bottle pieces.

[0046] In the embodiment, referring to Figures 7-9 For the feeding frame 2, the feeding frame 2 is open at the upper and lower ends, the lower end is fixedly connected with the through hole of the conveying barrel 1, and the upper end is a feeding port, an inner cavity is opened in the middle of the feeding frame 2, the inner cavity is a cylindrical inner cavity, a material distribution rod is adapted and installed in the inner cavity, the material distribution rod comprises a rotating main rod 3 and a rectangular fan blade 4; the rotating main rod 3 is rotatably connected with the inner cavity, both ends of the rotating main rod 3 are connected with the front and rear frame surfaces of the feeding frame 2, and one end of the rotating main rod 3 penetrates the frame surface and is connected with the motor A5; four rectangular fan blades 4 are fixedly connected with the rotating main rod 3, and the inner cavity is divided into four areas by the rectangular fan blades 4.

[0047] Further, the four rectangular fan blades 4 are evenly arranged around the circumference, and the equally divided four rectangular fan blades 4 are beneficial to uniformly quantitatively separate the plastic bottle pieces; and the edge end of the rectangular fan blade 4 is arc-shaped, the edge end can be fitted with the cylindrical inner wall of the inner cavity, which is more beneficial to the quantity of the plastic bottle pieces, and the arc-shaped edge end shape is beneficial to the gathering of the plastic bottle pieces.

[0048] In the embodiment, referring to Figures 1-2 The right tail end of the conveying barrel 1 is also provided with a discharging cylinder 8, a discharging port is provided at the lower side of the tail end of the conveying barrel 1, the discharging port is vertically connected with a discharging cylinder 8, a filter plate 9 is adapted and installed in the discharging cylinder 8, the diameter of the filter plate 9 is the same as the inner diameter of the discharging cylinder 8, a plurality of through holes only allowing the plastic bottle piece melt to pass through are provided on the filter plate 9, the melt flows into the discharging cylinder 8 and is filtered by the filter plate 9, the bottle pieces that are not melted are left on the filter plate 9, so that the plastic bottle pieces that are not completely melted can not directly affect the flow degree of the melt.

[0049] Further, the filter plate 9 is arranged at the lower part of the discharging cylinder 8, and the upper surface of the filter plate 9 is spaced from the discharging port of the conveying cylinder 1 to store the un-melted plastic bottle pieces; and the discharging cylinder 8 is threadedly connected with the conveying cylinder, and the top end of the discharging cylinder 8 is a threaded end, so that the discharging cylinder 8 can be screwed off after the filtering is completed, and the un-melted plastic bottle pieces can be continuously poured into the feeding port for melting treatment again, thereby avoiding waste of materials.

[0050] Further, referring to Figure 1 The lower surface of the support 12 is provided with four rollers 13 arranged at the four corners of the lower surface of the support 12, so that the device can be moved through the rollers 13, and the device is convenient to use and the use range is expanded.

[0051] When working, the plastic bottle pieces are poured into the feeding frame 2, the motor A5 is started, the motor A5 drives the rotating main rod 3 to rotate, so that the four rectangular vanes 4 rotate synchronously, and the plastic bottle pieces in the feeding frame 2 are evenly separated into the four areas of the inner cavity. When the rotating rod rotates to one of the areas and is aligned with the communication port, the plastic bottle pieces fall into the conveying cylinder 1 under the action of gravity, the driving motor B6 is started, and the heating ring 10 is charged, so that the plastic bottle pieces are extruded and melted by the extruding screw 7 and the heating mechanism, the molten liquid is extruded from the discharging port at the tail end of the conveying cylinder 1 to the discharging cylinder 8, filtered through the filter plate 9, and the residual bottle pieces are left on the filter plate 9.

[0052] Generally, a rotatable auger, i.e., the extruding screw 7, is arranged in the sleeve to convey the plastic bottle pieces, the plastic bottle pieces poured into the sleeve are conveyed and compacted, and the plastic bottle pieces are heated and melted by the external heating mechanism. However, because the feeding port of the existing screw extrusion structure is relatively narrow and short, the plastic bottle pieces poured into the feeding port are prone to be blocked at the feeding port position, the working process is hindered, and the working efficiency is relatively low. Meanwhile, the plastic bottle pieces melted by the heating mechanism have a probability of not being completely melted, and the molten liquid directly discharged will affect the flowability of the molten liquid and affect the subsequent processing. The present scheme designs a screw extrusion structure, the feeding frame 2 and the rotating rod are cooperated, the rotating rod in the inner cavity of the feeding frame 2 can quantitatively and constantly convey the plastic bottle pieces into the cylinder, so as to avoid blocking at the feeding port and control the plastic bottle pieces and the melting amount; and the present scheme further designs the discharging cylinder 8 with the filter plate 9, which can filter the molten liquid, the discharging cylinder 8 is threadedly connected and can be simply detached, so as to facilitate the processing and melting of the bottle pieces and avoid waste; and the roller 13 mechanism is further arranged, so that the device is convenient to move and use.

[0053] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application have been described in detail, for the skilled in the art, it still can be modified, or for the equivalent replacement of part of the technical features of the technical solutions recorded in the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included within the scope of the present application.

Claims

1. A screw extrusion structure for melt processing plastic bottle flakes, characterized by: Including conveying barrel (1), feeding frame (2) and distribution rod; The conveying barrel (1) is provided with a feeding frame (2) on one side, the feeding frame (2) is provided with an inner cavity, a distribution rod is installed in the inner cavity, and the distribution rod divides the inner cavity into multiple areas; the distribution rod is rotatably arranged in the inner cavity, the inner cavity is communicated with the conveying barrel (1), and an extrusion screw (7) is arranged in the conveying barrel (1), the extrusion screw (7) is rotatably arranged in the conveying barrel (1), and a discharge port is formed in the tail end of the conveying barrel (1); a heating mechanism is arranged outside the conveying barrel (1), and the plastic bottle pieces are heated and melted by the heating mechanism. In work, a large amount of plastic bottle pieces are poured into the feeding frame (2), the distribution rod is driven to rotate in the inner cavity, the plastic bottle pieces separated into each area are brought down into the conveying barrel (1) by the rotation of the distribution rod, the plastic bottle pieces are quantitatively and constantly conveyed by the distribution rod, and the extrusion screw (7) is rotated to convey the plastic bottle pieces in the conveying barrel (1) and melt the plastic bottle pieces by the heating mechanism.

2. A screw extrusion structure for melt processing plastic bottle flakes according to claim 1, characterized in that: The conveying barrel (1) is a long cylindrical barrel, and the extrusion screw (7) is inserted into the conveying barrel (1) and arranged coaxially with the conveying barrel (1).

3. A screw extrusion structure for melt processing plastic bottle flakes according to claim 2, wherein: One end of the extrusion screw (7) penetrates through the side wall of the conveying barrel (1), and a motor B (6) is arranged at the end, the extrusion screw (7) is rotated to convey the plastic bottle pieces by driving the motor B (6).

4. A screw extrusion structure for melt processing plastic bottle flakes according to claim 1, wherein: The feeding frame (2) is provided with an inlet on the top, and the plastic bottle pieces are poured into the inner cavity through the inlet.

5. A screw extrusion structure for melt processing plastic bottle flakes according to claim 1, wherein: The distribution rod comprises a rotating main rod (3) and a rectangular fan blade (4); the rotating main rod (3) is rotatably connected with the inner cavity, the two ends of the rotating main rod (3) are respectively connected with the front and rear frame surfaces of the feeding frame (2), and one end of the rotating main rod (3) penetrates through the frame surface and is connected with a motor A (5); four rectangular fan blades (4) are fixedly connected with the side of the rotating main rod (3), and the inner cavity is divided into four areas by the rectangular fan blades (4).

6. A screw extrusion structure for melt processing plastic bottle flakes according to claim 5, wherein: The inner cavity is cylindrical, and the edge of the rectangular fan blade (4) is arc-shaped, which can be matched with the inner wall of the inner cavity.

7. A screw extrusion structure for melt processing plastic bottle flakes according to claim 1, wherein: The heating mechanism comprises a plurality of heating rings (10), the plurality of heating rings (10) are coaxially arranged, and the plurality of heating rings (10) are arranged outside the conveying barrel (1) along the length direction of the conveying barrel (1), the plastic bottle pieces conveyed by the extrusion screw (7) are high-temperature heated.

8. A screw extrusion structure for melt processing plastic bottle flakes according to claim 1, wherein: A discharge cylinder (8) is arranged at the discharge port, a filter plate (9) is arranged in the discharge cylinder (8), a plurality of through holes only allowing the plastic bottle piece melt to pass through are formed in the filter plate (9), the melt flows into the discharge cylinder (8) and is filtered by the filter plate (9), and the bottle pieces not melted are left on the filter plate (9).

9. A screw extrusion structure for melt processing plastic bottle flakes according to claim 1, wherein: The conveying barrel (1) is fixedly installed on a support (12), and a roller (13) is arranged at each corner of the support (12), so that the device is convenient to move and use.

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