Extruder feed device with impurity removal function

Abstract

This utility model discloses an extruder feeding device with impurity removal function, comprising: a feeding cylinder; an annular filter plate rotatably installed in the middle of the feeding cylinder, the annular filter plate having multiple filter holes, a vibrator installed on the annular filter plate, a motor installed on the feeding cylinder, and the motor drivingly connected to the annular filter plate; a screen cylinder coaxially installed inside the upper closed end, the lower end of the screen cylinder rotatably passing through the inner annular hole of the annular filter plate, the closed end having a through hole, the through hole being connected to a dust suction pipe; a feeding cylinder with a diameter smaller than the feeding cylinder, coaxially arranged below the lower open end, the upper opening of the feeding cylinder being connected to the lower open end through a reducing cylinder; and multiple magnetic strip assemblies, including multiple sleeves and magnetic core strips, the sleeves being connected to the cylinder walls on opposite sides of the feeding cylinder, the ends of the sleeves penetrating the cylinder walls, and the magnetic core strips being detachably inserted into the sleeves. This utility model solves the problem that impurities in the raw materials of plastic extruders affect product quality or wear and tear on the extruder.

Description

Technical Field

[0001] This utility model relates to the field of extruder technology, specifically to an extruder feeding device with impurity removal function. Background Technology

[0002] Screw extruders include single-screw extruders and twin-screw extruders. Twin-screw extruders were developed based on single-screw extruders and have been widely used in the molding and processing of extruded products due to their excellent feeding performance, mixing and plasticizing performance, venting performance, and extrusion stability.

[0003] Current plastic extruders cannot remove dust, large particles, and impurities such as iron from materials. When these impurities are mixed with the material and extruded together, dust and soft impurities will reduce product quality and affect the product's appearance and color; while hard impurities will wear down the extruder and even affect its normal operation. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, an extruder feeding device with impurity removal function is provided to solve the problem that impurities in the raw materials of plastic extruders affect product quality or wear out the extruder.

[0005] To achieve the above objectives, an extruder feeding device with impurity removal function is provided, comprising:

[0006] A feeding cylinder having an upper closed end and a lower open end;

[0007] An annular filter plate is rotatably mounted in the middle of the feeding cylinder. The annular filter plate is coaxially arranged with the feeding cylinder. The annular filter plate has multiple filter holes. A vibrator is mounted on the annular filter plate. A motor is mounted on the feeding cylinder. The motor is driven and connected to the annular filter plate.

[0008] A mesh tube, the upper end of which is coaxially mounted inside the upper closed end, and the lower end of which is rotatably inserted into the inner ring hole of the annular filter plate, and the closed end is provided with a through hole, the through hole being connected to a dust suction pipe;

[0009] A lower cylinder with a diameter smaller than that of the upper cylinder is coaxially disposed below the lower opening end, and the upper opening of the lower cylinder is connected to the lower opening end through a reducing cylinder;

[0010] Multiple magnetic strip assemblies include multiple sleeves and magnetic core strips. The sleeves are connected to the cylinder walls on opposite sides of the feed cylinder, and the ends of the sleeves penetrate the cylinder walls. The magnetic core strips are detachably inserted into the sleeves.

[0011] Furthermore, the outer diameter of the annular filter plate is adapted to the inner diameter of the feeding cylinder.

[0012] Furthermore, a receiving groove is formed on the circumferential surface of the annular filter plate, and the receiving groove is arranged in a circle along the circumferential direction of the annular filter plate. A rack is laid in the receiving groove. A strip-shaped hole is opened in the middle of the cylinder wall of the feeding cylinder. The motor is installed on the outer side of the cylinder wall of the feeding cylinder. A gear is coaxially connected to the output shaft of the motor. One side of the gear is rotatably inserted through the strip-shaped hole and meshes with the rack.

[0013] Furthermore, a supporting rib is installed on the inner side of the feed cylinder wall. The supporting rib is arranged in a circle along the circumference of the feed cylinder and is supported by the annular filter plate.

[0014] Furthermore, it also includes a buffer plate disposed below the filter holes, the lower end of the mesh cylinder extends to the lower end of the annular filter plate, the buffer plate is inclined, the upper end of the buffer plate is rotatably installed at the lower end of the mesh cylinder, and an elastic support is connected between the buffer plate and the mesh cylinder.

[0015] Furthermore, there are multiple buffer plates, which are continuously arranged along the circumferential direction of the mesh cylinder.

[0016] Furthermore, the sleeve is arranged along the radial direction of the feed cylinder.

[0017] Furthermore, the sleeve is triangular prism-shaped, with one corner of the sleeve facing upwards.

[0018] Furthermore, the plurality of magnetic strip assemblies are arranged in multiple rows along the vertical direction, and each row of magnetic strip assemblies includes a plurality of magnetic strip assemblies arranged at intervals, with the magnetic strip assemblies in two adjacent rows arranged alternately.

[0019] The beneficial effects of this utility model are that the extruder feeding device with impurity removal function filters out large particulate impurities through an annular filter plate, removes dust from the feed cylinder and feed tube through a suction pipe, and removes metal impurities through a magnetic strip assembly. This avoids wear and tear on the extruder by large particulate impurities and metal impurities, prevents dust from mixing and reducing product quality, and improves the service life of the extruder. Attached Figure Description

[0020] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the structure of the extruder feeding device with impurity removal function according to an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the structure of the extruder feeding device with impurity removal function according to an embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the arrangement of the magnetic strip assembly according to an embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram showing the usage state of the extruder feeding device with impurity removal function according to an embodiment of the present invention.

[0025] Figure label:

[0026] Feeding cylinder 1, supporting rib 11, chip receiving plate 12;

[0027] 2. Annular filter plate; 21. Vibrator; 22. Motor; 23. Rack; 24. Gear; 25. Ring cover;

[0028] 3 mesh tubes, 31 suction pipes;

[0029] Feeding cylinder 4, reducing cylinder 41;

[0030] Magnetic strip assembly 5, sleeve 51, magnetic core strip 52;

[0031] Buffer plate 6, elastic support 61;

[0032] Extruder 7, hopper 71. Detailed Implementation

[0033] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] Reference Figures 1 to 4 As shown, this utility model provides an extruder feeding device with impurity removal function, including: feeding cylinder 1, annular filter plate 2, screen cylinder 3, feeding cylinder 4, and magnetic strip assembly 5.

[0036] In this embodiment, the feeding cylinder 1 is cylindrical. The feeding cylinder is vertically arranged. The feeding cylinder 1 has an upper closed end and a lower open end.

[0037] The annular filter plate 2 is rotatably mounted in the middle of the feeding cylinder 1. In this embodiment, the outer diameter of the annular filter plate 2 is adapted to the inner diameter of the feeding cylinder 1.

[0038] The annular filter plate 2 is coaxially arranged with the feeding cylinder 1, and the annular filter plate 2 has multiple filter holes. The inner diameter of the filter holes is smaller than the outer diameter of large particles in the raw material. The inner diameter of the filter holes is adapted to the outer diameter of the raw material particles, allowing the raw material particles to pass through the filter holes. A vibrator 21 is installed on the annular filter plate 2. A motor 22 is installed on the feeding cylinder 1. The motor 22 is driven by the annular filter plate 2 to drive the annular filter plate to rotate around the central axis of the feeding cylinder.

[0039] A receiving groove is formed on the circumferential surface of the annular filter plate 2. The receiving groove is arranged in a circle along the circumference of the annular filter plate 2. A rack 23 is laid in the receiving groove. A strip-shaped hole is opened in the middle of the cylinder wall of the feeding cylinder 1. The motor 22 is installed on the outer side of the cylinder wall of the feeding cylinder 1. A gear 24 is coaxially connected to the output shaft of the motor 22. One side of the gear 24 is rotatably inserted into the strip-shaped hole. One side of the gear 24 meshes with the rack 23.

[0040] The screen cylinder 3 is cylindrical. The upper end of the screen cylinder 3 is coaxially mounted inside the closed end. The lower end of the screen cylinder 3 is rotatably inserted into the inner annular hole of the annular filter plate 2. The outer diameter of the screen cylinder is adapted to the size of the inner annular hole of the annular filter plate.

[0041] In a preferred embodiment, a supporting rib 11 is installed on the inner side of the feed cylinder 1. The supporting rib 11 is arranged in a circle along the circumference of the feed cylinder 1. The supporting rib 11 is supported on the annular filter plate 2.

[0042] In this embodiment, the mesh cylinder 3 is a stainless steel mesh cylinder. The mesh size of the stainless steel mesh cylinder is smaller than the outer diameter of the raw material particles. A support member is formed at the lower part of the circumferential surface of the mesh cylinder. The support member is arranged in a circle along the circumference of the mesh cylinder. The support member is supported on the annular filter plate. Specifically, the support member is supported on the inner edge of the annular filter plate, and the support rib is supported on the outer edge of the annular filter plate. The inner annular surface of the annular filter plate 2 is rotatably connected to the circumferential surface of the mesh cylinder 3 through a sealed bearing.

[0043] In this embodiment, the outer edge of the annular filter plate 2 extends upward to form an annular cover 25, and the annular cover 25 is arranged in a circle along the circumference of the annular filter plate.

[0044] The upper closed end of the feeding cylinder 1 has a through hole. The through hole is connected to a dust suction pipe 31.

[0045] The diameter of the feed cylinder 4 is smaller than that of the feed cylinder 1. The feed cylinder 4 is coaxially positioned below the lower opening end of the feed cylinder 1.

[0046] In this embodiment, the upper opening of the feed cylinder 4 is connected to the lower opening via a reducing cylinder 41. The reducing cylinder is in the shape of an inverted frustum. The upper end of the reducing cylinder is adapted to the diameter of the feed cylinder, and the lower end of the reducing cylinder is adapted to the diameter of the feed cylinder.

[0047] There are multiple magnetic strip assemblies 5. Each magnetic strip assembly 5 includes multiple sleeves 51 and magnetic core strips 52. The sleeves 51 are connected to the cylinder walls on opposite sides of the feed cylinder 4. The ends of the sleeves 51 penetrate the cylinder walls. The magnetic core strips 52 are detachably inserted into the sleeves 51.

[0048] In this embodiment, the sleeve 51 is arranged radially along the feed cylinder 4. The sleeve 51 is triangular prism in shape. One corner of the sleeve 51 faces upward.

[0049] In a preferred embodiment, multiple magnetic stripe assemblies 5 are arranged in multiple rows along a vertical direction. Each row of magnetic stripe assemblies 5 includes multiple magnetic stripe assemblies 5 spaced apart. The magnetic stripe assemblies 5 in two adjacent rows are arranged alternately.

[0050] See Figure 1 and Figure 2 As shown, a chip receiving plate is rotatably mounted on the lower end of the feed cylinder.

[0051] The extruder feeding device with impurity removal function of this utility model also includes a buffer plate 6 disposed below the filter holes. The lower end of the screen cylinder 3 extends below the annular filter plate 2. The buffer plate 6 is inclined, and the upper end of the buffer plate 6 is rotatably mounted on the lower end of the screen cylinder 3. An elastic support member 61 connects the buffer plate 6 and the screen cylinder 3.

[0052] See Figure 2 As shown, there are multiple buffer plates 6. Multiple buffer plates 6 are continuously arranged along the circumference of the mesh cylinder 3.

[0053] In this embodiment, a feeding port is provided at the upper end of the feeding cylinder, and a cover plate is installed in the feeding port. During feeding, the cover plate is opened and the motor is turned on. The motor drives the annular filter plate to rotate through the gears, so that the raw material is evenly piled on the annular filter plate. The vibrator is turned on, and the raw material particles fall through the filter holes of the annular filter plate, while large-diameter impurities are retained on the annular filter plate. When the raw material particles fall, they fall onto the buffer plate, which buffers the raw material particles, so that the raw material particles fall onto the inner side of the cylinder wall of the variable diameter cylinder. Then, the raw material particles slide into the feeding cylinder along the inclined slope of the cylinder wall of the variable diameter cylinder. When the raw material particles fall into the feeding cylinder, as the raw material particles pass through the gaps between each magnetic strip assembly, the metal impurities are adsorbed onto the magnetic strip assembly, and the dust raised during the falling process is sucked away by the suction pipe through the mesh cylinder, so that the impurity-removed raw material particles fall into the hopper 71 of the extruder 7.

[0054] After feeding is complete, the chip receiving plate is pivotally connected to the end face of the feed cylinder via a vertically hinged shaft. Rotating the chip receiving plate positions it directly below the lower opening of the feed cylinder. Then, the magnetic core strip is pulled out of the sleeve; once the magnetic attraction disappears, any metal impurities adsorbed outside the sleeve fall onto the chip receiving plate. Rotating the chip receiving plate again removes the metal impurities. Finally, the magnetic core strip is inserted back into the sleeve.

[0055] After the feeding device has been used continuously for a period of time, open the cover of the feeding port and use an industrial vacuum cleaner to periodically clean the large-diameter impurities on the annular filter plate.

[0056] This utility model discloses an extruder feeding device with impurity removal function. It filters out large particulate impurities through an annular filter plate, removes dust from the feed cylinder and feed barrel through a suction pipe, and removes metal impurities through a magnetic strip assembly. This prevents large particulate impurities and metal impurities from wearing down the extruder, avoids dust mixing from reducing product quality, and improves the service life of the extruder.

[0057] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A feeder for an extruder with a cleaning function, characterized in that, include: A feeding cylinder having an upper closed end and a lower open end; An annular filter plate is rotatably mounted in the middle of the feeding cylinder. The annular filter plate is coaxially arranged with the feeding cylinder. The annular filter plate has multiple filter holes. A vibrator is mounted on the annular filter plate. A motor is mounted on the feeding cylinder. The motor is driven and connected to the annular filter plate. A mesh tube, the upper end of which is coaxially mounted inside the upper closed end, and the lower end of which is rotatably inserted into the inner ring hole of the annular filter plate, and the closed end is provided with a through hole, the through hole being connected to a dust suction pipe; A lower cylinder with a diameter smaller than that of the upper cylinder is coaxially disposed below the lower opening end, and the upper opening of the lower cylinder is connected to the lower opening end through a reducing cylinder; Multiple magnetic strip assemblies include multiple sleeves and magnetic core strips. The sleeves are connected to the cylinder walls on opposite sides of the feed cylinder, and the ends of the sleeves penetrate the cylinder walls. The magnetic core strips are detachably inserted into the sleeves.

2. The extruder feeding device with impurity removal function according to claim 1, characterized in that, The outer diameter of the annular filter plate is adapted to the inner diameter of the feeding cylinder.

3. The extruder feeding device with impurity removal function according to claim 2, characterized in that, A receiving groove is formed on the circumferential surface of the annular filter plate. The receiving groove is arranged in a circle along the circumferential direction of the annular filter plate. A rack is laid in the receiving groove. A strip-shaped hole is opened in the middle of the cylinder wall of the feeding cylinder. The motor is installed on the outer side of the cylinder wall of the feeding cylinder. A gear is coaxially connected to the output shaft of the motor. One side of the gear is rotatably inserted through the strip-shaped hole and meshes with the rack.

4. The extruder feeding device with impurity removal function according to claim 3, characterized in that, The inner side of the feed cylinder wall is equipped with a support rib, which is arranged in a circle along the circumference of the feed cylinder and is supported by the annular filter plate.

5. The extruder feeding device with impurity removal function according to claim 1, characterized in that, It also includes a buffer plate disposed below the filter holes, the lower end of the mesh cylinder extends to the lower end of the annular filter plate, the buffer plate is inclined, the upper end of the buffer plate is rotatably installed at the lower end of the mesh cylinder, and an elastic support is connected between the buffer plate and the mesh cylinder.

6. The extruder feeding device with impurity removal function according to claim 5, characterized in that, The number of buffer plates is multiple, and the multiple buffer plates are continuously arranged along the circumferential direction of the mesh cylinder.

7. The extruder feeding device with impurity removal function according to claim 1, characterized in that, The sleeve is arranged along the radial direction of the feed cylinder.

8. The extruder feeding device with impurity removal function according to claim 7, characterized in that, The sleeve is triangular prism-shaped, with one corner of the sleeve facing upwards.

9. The extruder feeding device with impurity removal function according to claim 8, characterized in that, Multiple magnetic stripe assemblies are arranged in multiple rows along the vertical direction. Each row of magnetic stripe assemblies includes multiple magnetic stripe assemblies arranged at intervals, and the magnetic stripe assemblies in two adjacent rows are arranged alternately.

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