Self-cleaning anti-blocking plastic chip spin dryer

Abstract

The application provides a self-cleaning anti-blocking plastic chip spin dryer, which comprises a cuboid spin dryer box arranged horizontally, a spin barrel installed through the spin dryer box, a spin conveying wheel with spiral propelling blades installed in the spin barrel, and a spin feeding motor for driving the spin conveying wheel to rotate at high speed in the spin dryer box; wherein one end of the spin dryer box is provided with a feeding port communicated with the interior of the spin barrel, the other end of the spin dryer box is provided with a centrifugal discharging machine communicated with the interior of the spin barrel, and the surface of the spin barrel is provided with a plurality of drainage small holes with diameters smaller than the size of normal plastic chips; in addition, the outer ring of the spin barrel is provided with a self-cleaning device reciprocally moving along the axial direction of the barrel body, the self-cleaning device is provided with cleaning brushes arranged in a ring around the outer wall of the barrel body, the cleaning brushes are in contact with the outer wall of the barrel body, and are used for cleaning fine chip fragments discharged from the drainage small holes, and are mainly used for ensuring the continuous and normal work of the spin dryer, avoiding the adhesion of fine plastic on the surface of the spin barrel, and ensuring that water cannot flow out of the drainage small holes.

Description

Technical Field

[0001] This invention relates to a plastic scrap dryer, and more particularly to a self-cleaning, anti-clogging plastic scrap dryer. Background Technology

[0002] Waste plastic bottles are crushed, washed, and separated into plastic fragments. These fragments are then sent to a spin dryer to remove water and achieve the separation of the plastic fragments from the liquid.

[0003] During the operation of the spin dryer, the surface of the spin dryer drum is covered with numerous small drainage holes for drainage. During the spin drying process, water will flow out through these drainage holes. At the same time, some small plastic fragments will also flow out from the drainage holes. After prolonged use, some of these fragments will adhere to and accumulate on the surface of the spin dryer drum, and some may even get stuck in the drainage holes, causing poor drainage. Eventually, the water will accumulate inside the spin dryer drum and cannot be discharged, preventing the centrifugal discharge machine at the tail of the spin dryer from discharging the normal plastic fragments, resulting in material blockage. Summary of the Invention

[0004] To address the problems existing in the prior art, this invention proposes a self-cleaning, anti-clogging plastic debris spin dryer.

[0005] The spin dryer includes: a horizontally arranged rectangular spin dryer box, a spin dryer barrel installed through the spin dryer box, a spin dryer conveyor wheel with spiral propulsion blades installed in the spin dryer barrel, and a spin dryer feeding motor that drives the spin dryer conveyor wheel to rotate at high speed in the spin dryer box. The spin dryer has a feed inlet at one end that communicates with the inside of the spin dryer barrel, and a centrifugal discharge machine at the other end that communicates with the inside of the spin dryer barrel. The surface of the spin dryer barrel has several drainage holes with a diameter smaller than that of normal plastic fragments. The drainage holes are mainly used to drain water during the spin drying process, and the centrifugal discharge machine is mainly used to transport the normal plastic fragments after spin drying to the next process.

[0006] In addition, the outer ring of the spin-drying drum is equipped with a self-cleaning device that reciprocates along the axial direction of the drum body. This self-cleaning device has cleaning brushes arranged in a ring around the outer wall of the drum, which make contact with the outer wall to clean fine debris discharged from the drain holes. This prevents fine debris from accumulating or adhering to the surface of the spin-drying drum, which could clog the drain holes and reduce the spin-drying efficiency.

[0007] Furthermore, in order to allow the cleaning ring to move back and forth along the spin-drying drum, the self-cleaning device also includes: a horizontal moving mechanism installed on the top of the spin-drying box, a shaped connector connected to the movable end of the horizontal moving mechanism, a slide rail assembly fixedly installed side by side below the shaped connector, an annular cleaning ring fitted on the outer wall of the spin-drying drum, and cleaning brushes distributed at the inner diameter of the cleaning ring.

[0008] The cleaning ring and the irregularly shaped connector are connected by a translational connecting tube. The slider on the slide rail assembly is connected to the bottom of the irregularly shaped connector. The upper end of the translational connecting tube is provided with a boss that is locked on the upper surface of the irregularly shaped connector. The lower end of the translational connecting tube is connected to the cleaning ring by a thread, so that the horizontal moving mechanism can drive the cleaning ring to move back and forth along the axis of the spin dryer under the support of the slide rail assembly through the irregularly shaped connector.

[0009] Furthermore, to improve the cleaning effect and prevent fine debris from getting stuck in the drain hole, the inner ring of the cleaning ring is provided with several evenly distributed air nozzles in a ring facing the outer wall of the spin dryer. The cleaning ring has an annular air chamber that communicates with all the air nozzles. The sliding connecting pipe has a vent hole that communicates with the annular air chamber. The top of the sliding connecting pipe has an air inlet pipe so that compressed air can be introduced into the annular air chamber and blown out from the air nozzle. The high-pressure compressed air can not only clean the fine debris at the exhaust hole, but also prevent the damp fine debris from adhering to and accumulating on the surface of the drum.

[0010] Furthermore, in order to reduce the length and stroke of the horizontal moving mechanism, a support partition is provided in the middle of the spin dryer. There are two sets of cleaning rings, which are arranged on both sides of the support partition. The two sets of cleaning rings are connected as one unit by several coupling rods passing through the support partition. The part of the coupling rod passing through the support partition is provided with a sliding sleeve fixedly installed on the support partition. The length of the coupling rod is half the length of the spin dryer.

[0011] Furthermore, in order to collect the cleaned-out fine fragments, the bottom of the spin dryer is equipped with a fine material discharge port, and below the fine material discharge port is a fine material receiving box.

[0012] Furthermore, to ensure that the translational connecting pipe is not obstructed during movement, the top cover of the spin dryer is provided with an elongated clearance hole in the direction of the translational connecting pipe's movement.

[0013] Furthermore, to prevent fine material fragments from overflowing from the clearance hole, an accordion cover is installed above the clearance hole. One end of the accordion cover is fixed to the outer end of the clearance hole, and the other end of the accordion cover is connected to both sides of the translation connecting pipe.

[0014] The technical advantages of this invention are as follows: First, by employing an axially reciprocating self-cleaning device, a dual cleaning system consisting of a cleaning brush and an air nozzle mounted on a ring-shaped cleaning ring moves axially along the spin-drying drum. This not only removes fine material fragments adhering to and accumulating on the surface of the drum, but also prevents these fragments from getting stuck in the exhaust vents through the high-pressure air blown from the nozzles. Second, dynamic cleaning during the spin-drying process keeps the drain vents clear, eliminating the possibility of plastic fragments remaining inside the drum and failing to separate from the water due to blockage. Third, the self-cleaning device enables continuous automatic cleaning without requiring manual cleaning during machine downtime, allowing the spin-dryer to serve as a reliable link in a waste plastic bottle processing line, significantly improving uninterrupted operation. Fourth, by connecting the two sets of cleaning rings together with a coupling rod whose length is equal to half the length of the spin-drying drum, the stroke of the horizontal moving mechanism that drives the cleaning rings to reciprocate is shortened by 1 / 2, making the entire device layout compact and reasonable; Fifth, a support partition is set in the middle of the spin-drying box, and the coupling rod passes through the support partition with the sliding sleeve installed, so that the two sets of cleaning rings with the same structure, size and shape are arranged on both sides of the support partition, reducing the load between the translation connecting pipe and the cleaning ring, and improving the reliability of the self-cleaning device; Sixth, after the fine material fragments are discharged from the exhaust hole, they are discharged into the fine material receiving box through the fine material discharge port, and can still be collected and recycled. Attached Figure Description

[0015] Figure 1 This is a perspective view of the spin dryer in this invention; Figure 2 This is a front view of the spin dryer in this invention; Figure 3 This is a perspective view of the self-cleaning device in this invention; Figure 4 This is a front view of the self-cleaning device in this invention; Figure 5 This is a front view of the upper cover in this invention; In the diagram, 1. Spin-drying feed motor, 2. Spin-drying box, 21. Feed inlet, 22. Fine material discharge outlet, 23. Fine material receiving box, 24. Centrifugal discharge machine, 25. Support partition, 26. Sliding sleeve, 28. Top cover, 3. Spin-drying conveyor wheel, 4. Spin-drying drum, 41. Drainage hole, 5. Self-cleaning device, 51. Horizontal moving mechanism, 52. Irregular connecting piece, 53. Slide rail assembly, 54. Bellows cover, 60. Cleaning ring, 61. Air nozzle, 62. Cleaning brush, 63. Annular air chamber, 64. Coupler rod, 7. Translation connecting pipe, 71. Air inlet pipe, 72. Vent hole, 281. Long strip clearance hole; Detailed Implementation

[0016] The following is combined Figures 1 to 5 Specific embodiments of the present invention will be described below.

[0017] Figure 1 The diagram illustrates the external structure of the spin dryer and the positional assembly of its main internal components. The spin dryer includes: a horizontally arranged rectangular spin dryer box 2; a spin dryer drum 4 installed through the spin dryer box 2; a spin dryer conveyor wheel 3 with spiral propulsion blades installed inside the spin dryer drum 4; and a spin dryer feeding motor 1 that drives the spin dryer conveyor wheel 3 to rotate at high speed inside the spin dryer box 2. One end of the spin dryer box 2 has a feed inlet 21 communicating with the interior of the spin dryer drum 4, and the other end of the spin dryer box 2 has a centrifugal discharge machine 24 communicating with the interior of the spin dryer drum 4. The surface of the spin dryer drum 4 has several drainage holes 41 with a diameter smaller than that of normal plastic fragments. Furthermore, the outer ring of the spin dryer drum 4 is equipped with a self-cleaning device 5 that reciprocates along the axial direction of the drum body.

[0018] The spin dryer 2 has a support partition 25 in the middle. There are two sets of cleaning rings 60, which are arranged on both sides of the support partition 25. The two sets of cleaning rings 60 are connected as one unit by several connecting rods 64 that pass through the support partition 25. The part of the connecting rod 64 that passes through the support partition 25 has a sliding sleeve 26 that is fixedly installed on the support partition 25. The length of the connecting rod 64 is half the length of the spin dryer 4.

[0019] The lower part of the spin dryer 2 is provided with a fine material discharge port 22, and a fine material receiving box 23 is provided below the fine material discharge port 22.

[0020] Figure 2 The diagram illustrates the position of the cleaning brush installed on the self-cleaning device of the spin dryer. The self-cleaning device 5 is equipped with cleaning brushes 62 arranged in a ring around the outer wall of the drum. The cleaning brushes 62 are in contact with the outer wall of the drum and are used to clean the fine material fragments discharged from the drain hole 41.

[0021] Figure 3 The overall external structure of the self-cleaning device is illustrated. The self-cleaning device 5 also includes: a horizontal moving mechanism 51 installed on the top of the spin-drying box 2, a shaped connector 52 connected to the movable end of the horizontal moving mechanism 51, a slide rail assembly 53 fixedly installed side by side below the shaped connector 52, an annular cleaning ring 60 fitted on the outer wall of the spin-drying tub 4, and cleaning brushes 62 distributed at the inner diameter of the cleaning ring 60. A translational connecting pipe 7 is provided between the cleaning ring 60 and the shaped connector 52, and the slider on the slide rail assembly 53 is supported and connected below the shaped connector 52.

[0022] Figure 4 The internal structure of the cleaning ring on the self-cleaning device is shown; the upper end of the translation connecting pipe 7 is provided with a boss that is locked on the upper surface of the irregular connector 52, and the lower end of the translation connecting pipe 7 is connected to the cleaning ring 60 by a thread, so that the horizontal moving mechanism 51 can drive the cleaning ring 60 to move back and forth along the axis of the spin dryer 4 under the support of the slide rail assembly 53 through the irregular connector 52. The inner ring of the cleaning ring 60 is provided with a number of air nozzles 61 evenly distributed in a ring towards the outer wall of the spin dryer 4. The cleaning ring 60 is provided with an annular air chamber 63 that communicates with all the air nozzles 61. The translational connecting pipe 7 is provided with a vent hole 72 that communicates with the annular air chamber 63. The top of the translational connecting pipe 7 is provided with an air inlet pipe 71 so that compressed air can be introduced into the annular air chamber 63 and then blown out from the air nozzles 61.

[0023] Figure 5 The structure of the top cover is illustrated. The top cover 28 of the spin dryer 2 has an elongated clearance hole 281 in the direction of movement of the translational connecting pipe 7. An accordion cover 54 is installed above the clearance hole 281. One end of the accordion cover 54 is fixed to the outer end of the clearance hole 281, and the other end of the accordion cover 54 is connected to both sides of the translational connecting pipe 7.

[0024] Working principle: Plastic fragments enter the spin dryer 4 through the feed inlet 21. The spin dryer feeding motor 1 drives the spin dryer conveyor wheel 3 to rotate at high speed. The spiral propulsion blades of the spin dryer conveyor wheel push the plastic fragments along the axis of the spin dryer towards the centrifugal discharge machine 24. During this process, the water is discharged through the drainage hole 41 on the surface of the spin dryer 4, while some fine fragments with smaller particle size flow out of the drainage hole 41 with the water flow, pass through the fine material discharge port 22, and fall into the fine material receiving box 23 at the bottom of the spin dryer 2. Another portion of damp fine debris accumulates on the surface of the spin-drying drum. When the drainage efficiency of the drain hole 41 decreases due to the accumulation of fine debris, the self-cleaning device 5 starts to work: the horizontal moving mechanism 51 drives the irregularly shaped connector 52 to move axially, and drives the annular cleaning ring 60 to reciprocate under the support of the slide rail assembly 53 through the translation connecting pipe 7; the cleaning brush 62 keeps in contact with the outer wall of the spin-drying drum 4 and physically scrapes the fine debris attached to the drum wall. The translational connecting pipe 7 introduces compressed air through the air inlet pipe 71, and blows it out through the annular air chamber 63 and the annularly distributed air nozzles 61 to remove residual debris. The support partition 25 divides the spin-drying box 2 into two sections, front and back, each section is equipped with a set of cleaning rings 60; the two sets of cleaning rings are linked by the connecting rod 64 to ensure that the cleaning action is synchronized and covers the entire length of the spin-drying drum 4. The detached fine material fragments fall into the fine material receiving box 23 through the fine material discharge port 22 at the bottom of the spin dryer 2 for centralized collection. The elongated clearance hole 281 of the top cover 28 allows the axial movement of the translational connecting pipe 7. The bellows cover 54 covers the moving area to prevent the fine material fragments in the spin dryer from being discharged from the clearance hole 281. At the same time, it prevents foreign objects from entering and ensures airtightness.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A self-cleaning, anti-clogging plastic debris spin dryer, characterized in that, The spin dryer includes: a horizontally arranged rectangular spin dryer box (2), a spin dryer barrel (4) installed through the spin dryer box (2), a spin dryer conveyor wheel (3) with spiral propulsion blades installed in the spin dryer barrel (4), and a spin dryer feeding motor (1) that drives the spin dryer conveyor wheel (3) to rotate at high speed in the spin dryer box (2). One end of the spin dryer (2) is provided with a feed inlet (21) that communicates with the inside of the spin dryer (4). Correspondingly, the other end of the spin dryer (2) is provided with a centrifugal discharge machine (24) that communicates with the inside of the spin dryer (4). The surface of the spin dryer (4) is provided with several drainage holes (41) with a diameter smaller than that of normal plastic fragments. In addition, the outer ring of the spin dryer (4) is provided with a self-cleaning device (5) that moves back and forth along the axial direction of the drum body. The self-cleaning device (5) is provided with a cleaning brush (62) arranged in a ring around the outer wall of the drum body. The cleaning brush (62) is in contact with the outer wall of the drum body and is used to clean the fine material fragments discharged from the drain hole (41).

2. The self-cleaning, anti-clogging plastic debris spin dryer according to claim 1, characterized in that, The self-cleaning device (5) further includes: a horizontal moving mechanism (51) installed on the top of the spin dryer (2), a shaped connector (52) connected to the movable end of the horizontal moving mechanism (51), a slide rail assembly (53) fixedly installed side by side below the shaped connector (52), an annular cleaning ring (60) fitted on the outer wall of the spin dryer (4), and cleaning brushes (62) distributed at the inner diameter of the cleaning ring (60); Among them, a translational connecting pipe (7) is provided between the cleaning ring (60) and the irregular connector (52). The slider on the slide rail assembly (53) is connected to the bottom of the irregular connector (52). The upper end of the translational connecting pipe (7) is provided with a boss that is stuck on the upper surface of the irregular connector (52). The lower end of the translational connecting pipe (7) is connected to the cleaning ring (60) by a thread so that the horizontal moving mechanism (51) can drive the cleaning ring (60) to move back and forth along the axis of the spin dryer (4) under the support of the slide rail assembly (53) through the irregular connector (52).

3. The self-cleaning, anti-clogging plastic debris spin dryer according to claim 2, characterized in that, The inner ring of the cleaning ring (60) is provided with a number of air nozzles (61) evenly distributed in a ring towards the outer wall of the spin dryer (4). The cleaning ring (60) is provided with an annular air chamber (63) that communicates with all the air nozzles (61). The translational connecting pipe (7) is provided with a vent hole (72) that communicates with the annular air chamber (63). The top of the translational connecting pipe (7) is provided with an air inlet pipe (71) so that compressed air can be introduced into the annular air chamber (63) and then blown out from the air nozzles (61).

4. The self-cleaning, anti-clogging plastic debris spin dryer according to claim 2 or 3, characterized in that, The spin dryer (2) is provided with a support partition (25) in the middle. There are two sets of cleaning rings (60) arranged on both sides of the support partition (25). The two sets of cleaning rings (60) are connected as one unit by several connecting rods (64) passing through the support partition (25). The part of the connecting rod (64) passing through the support partition (25) is provided with a sliding sleeve (26) fixedly installed on the support partition (25). The length of the connecting rod (64) is half the length of the spin dryer (4).

5. The self-cleaning, anti-clogging plastic debris spin dryer according to claim 4, characterized in that, The lower part of the spin dryer (2) is provided with a fine material discharge port (22), and a fine material receiving box (23) is provided below the fine material discharge port (22).

6. The self-cleaning, anti-clogging plastic debris spin dryer according to claim 4, characterized in that, The top cover (28) of the spin dryer (2) has an elongated clearance hole (281) in the direction of movement of the translational connecting pipe (7).

7. The self-cleaning, anti-clogging plastic debris spin dryer according to claim 7, characterized in that, An accordion cover (54) is installed above the clearance hole (281). One end of the accordion cover (54) is fixed to the outer end of the clearance hole (281), and the other end of the accordion cover (54) is connected to both sides of the translation connecting pipe (7).

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