Single-screw extruder convenient to clean

Abstract

The utility model relates to the technical field of extruders, in particular to a single-screw extruder convenient to clean, which comprises an extruder, a cleaning part used for cleaning an extrusion screw is arranged in the extruder, a plurality of uniformly distributed supports are arranged on the lower portion of the extruder, and the supports are connected with the extruder. The single-screw extruder convenient to clean comprises an extruder body and a cleaning part, the extruder body is internally provided with a sealing part used for sealing and opening the belly of the extruder body, the cleaning part comprises a driving block and a spray head which are connected to the interior of the upper portion of the extruder body in a sliding mode, and the interior of the driving block is rotationally connected with a driving plate. A reciprocating screw pushes a driving block to slide, a first gear can drive a driving plate to rotate under driving of a toothed plate, a driving groove can enable a spray head to be pushed by the driving plate to slide, the spray head sprays high-temperature water vapor to the periphery of an extrusion screw in the sliding process, the high-temperature water vapor can heat and soften attachments, and then the attachments fall off. Therefore, the cleaning function of the extrusion screw can be realized.

Description

Technical Field

[0001] This utility model relates to the field of extruder technology, specifically to a single-screw extruder that is easy to clean. Background Technology

[0002] A single-screw extruder is a type of mechanical equipment widely used in plastics processing and other fields. The transmission system drives the screw to rotate inside the barrel. The material enters the barrel from the hopper and moves forward along the screw groove under the axial thrust of the screw. Under the heating of the barrel and the friction of the screw, the material softens, melts and fully plasticizes from a solid state, and is finally extruded from the die head at a stable flow rate and pressure.

[0003] The existing single-screw extruder requires disassembling the machine and removing the extrusion screw to clean it. After cleaning, the extrusion screw must be reinstalled inside the machine. The entire disassembly, cleaning and reinstallation process is time-consuming, which causes the extruder to be in a state of shutdown for a long time and reduces production efficiency. To address this, we propose a single-screw extruder that is easy to clean. Utility Model Content

[0004] One of the technical problems this application aims to solve is that the cleaning process for removing the extrusion screw is cumbersome and time-consuming.

[0005] To address the aforementioned technical problems, this application provides a single-screw extruder that is easy to clean, comprising an extruder, wherein the extruder is provided with a cleaning component for cleaning the extrusion screw, the lower part of the extruder is provided with a plurality of evenly distributed supports, and the extruder is provided with a sealing component for closing and opening the extruder belly.

[0006] Preferably, the cleaning component includes a drive block and a nozzle slidably connected inside the upper part of the extruder. A drive plate is rotatably connected inside the drive block, and a drive groove is provided at the lower part of the drive plate. The upper end of the nozzle is slidably connected inside the drive groove. A water pipe is provided on the left side of the nozzle. A guide for stabilizing the movement of the nozzle and the drive block is provided inside the extruder. A drive component for driving the drive block is also provided inside the extruder.

[0007] Preferably, the drive component includes a reciprocating screw rotatably connected to the upper part of the extruder, a motor is provided on the upper right side of the extruder, the right end of the reciprocating screw is provided at the drive end of the motor, the drive block is threadedly connected to the outer periphery of the reciprocating screw, a gear is provided at the upper end of the drive plate, and a toothed plate is provided inside the upper part of the extruder, with the gear and the toothed plate meshing with each other.

[0008] Preferably, the guide includes a slide bar disposed inside the upper part of the extruder, the drive block is slidably connected to the outer periphery of the slide bar, guide blocks are disposed on both the front and rear sides of the nozzle, and a guide groove is provided in the upper part of the extruder, with the guide block slidably connected inside the guide groove.

[0009] Preferably, the sealing component includes a fixed ring and a toothed ring rotatably connected to the lower part of the extruder. The fixed ring and the toothed ring are provided with sealing plates on their upper and lower parts on the adjacent side. The extruder has two sealing openings inside, and the sealing plates are slidably connected to the inside of the sealing openings. The lower part of the extruder is provided with a driving component two for driving the toothed ring to rotate.

[0010] Preferably, the second driving component includes a second motor disposed on the lower left side of the extruder, a second gear rotatably connected to the lower left side of the extruder, the left side of the second gear being disposed on the driving end of the second motor, and the second gear meshing with the gear ring.

[0011] Preferably, a fixing rod is provided on the front side of the drive block, and a quick connector is provided inside the fixing rod. The end of the water pipe away from the nozzle is located at the right end of the quick connector. A sliding groove is provided on the upper part of the extruder, and the fixing rod is slidably connected inside the sliding groove.

[0012] This utility model has at least the following beneficial effects:

[0013] 1. The motor drives the reciprocating screw to rotate, and the reciprocating screw pushes the drive block to slide left and right at a uniform speed. Under the drive of the toothed plate, the gear can drive the drive plate to rotate. Through the push of the drive groove, the nozzle can be pushed and slid by the drive plate. During the swinging and sliding process, the nozzle will spray high-temperature water vapor on the outer periphery of the extrusion screw. The high-temperature water vapor can heat and soften the attached material, and then fall off, thereby realizing the cleaning function of the extrusion screw.

[0014] 2. Start motor two drives gear two to rotate. Gear two can drive the gear ring to rotate clockwise. The gear ring drives the two sealing plates and the fixed ring to rotate. At this time, the two sealing plates will be completely misaligned with the two sealing openings. Motor two rotates in the opposite direction. Through transmission, the two sealing plates can be rotated and coincide with the two sealing openings. This can realize the function of opening and closing the working space of the extrusion screw. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the extruder structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the drive block structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the drive board structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the gear ring structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0021] In the diagram: 1. Extruder; 11. Support; 12. Fixing rod; 13. Quick connector; 14. Sliding groove; 2. Cleaning component; 21. Drive block; 22. Drive plate; 23. Nozzle; 24. Drive groove; 25. Water pipe; 3. Drive component one; 31. Motor one; 32. Reciprocating screw; 33. Gear plate; 34. Gear one; 4. Guide component; 41. Guide block; 42. Slide rod; 43. Guide groove; 5. Sealing component; 51. Fixing ring; 52. Gear ring; 53. Sealing plate; 54. Sealing opening; 6. Drive component two; 61. Motor two; 62. Gear two. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1: Please refer to Figure 1-5 This utility model provides a technical solution: a single-screw extruder that is easy to clean, including an extruder 1, a cleaning component 2 for cleaning the extrusion screw is provided inside the extruder 1, a plurality of evenly distributed supports 11 are provided at the lower part of the extruder 1, and a sealing component 5 for closing and opening the extruder belly is provided inside the extruder 1.

[0024] Furthermore, the cleaning component 2 includes a drive block 21 and a nozzle 23 that are slidably connected inside the upper part of the extruder 1. A drive plate 22 is rotatably connected inside the drive block 21. A drive groove 24 is provided at the lower part of the drive plate 22. The upper end of the nozzle 23 is slidably connected inside the drive groove 24. A water pipe 25 is provided on the left side of the nozzle 23. A guide 4 for stabilizing the movement of the nozzle 23 and the drive block 21 is provided inside the extruder 1. A drive component 3 for driving the drive block 21 to move is provided inside the extruder 1.

[0025] The drive block 21 is used to drive the drive plate 22 to move. When the drive plate 22 moves, it can push the nozzle 23 to slide regularly inside the extruder 1 through the drive groove 24. The nozzle 23 can spray high-temperature hot steam. The adhering material on the extrusion screw can be blown off by the water steam. The water pipe 25 can withstand high temperature and allow water steam to be sprayed out through the nozzle 23.

[0026] Furthermore, the drive component 3 includes a reciprocating screw 32 rotatably connected to the upper part of the extruder 1, a motor 31 is provided on the upper right side of the extruder 1, the right end of the reciprocating screw 32 is provided at the drive end of the motor 31, the drive block 21 is threadedly connected to the outer periphery of the reciprocating screw 32, a gear 34 is provided at the upper end of the drive plate 22, and a toothed plate 33 is provided inside the upper part of the extruder 1, with the gear 34 and the toothed plate 33 meshing with each other;

[0027] Motor 31 is used to drive the reciprocating screw 32 to rotate. The reciprocating screw 32 can push the drive block 21 to slide back and forth regularly inside the extruder 1. The toothed plate 33 is used to cooperate with gear 34 to drive the drive plate 22 to rotate.

[0028] Furthermore, the guide 4 includes a slide bar 42 disposed inside the upper part of the extruder 1, a drive block 21 slidably connected to the outer periphery of the slide bar 42, guide blocks 41 disposed on both the front and rear sides of the nozzle 23, and a guide groove 43 opened in the upper part of the extruder 1, with the guide block 41 slidably connected inside the guide groove 43.

[0029] The guide block 41 is used to stabilize the sliding of the nozzle 23, and the slide bar 42 is used to cooperate with the reciprocating screw 32 to balance the left and right sides of the drive block 21 and prevent the drive block 21 from tilting.

[0030] Furthermore, the sealing member 5 includes a fixed ring 51 and a toothed ring 52 rotatably connected to the lower part of the extruder 1. The upper and lower parts of the fixed ring 51 and the toothed ring 52 are provided with sealing plates 53 on the adjacent side. The extruder 1 has two sealing openings 54. The sealing plates 53 are slidably connected to the inside of the sealing openings 54. The lower part of the extruder 1 is provided with a driving member 6 for driving the toothed ring 52 to rotate.

[0031] The retaining ring 51 is used to cooperate with the toothed ring 52 to fix the two sealing plates 53, so that the two sealing plates 53 are symmetrically distributed. The sealing plates 53 are used to separate the sliding space of the nozzle 23 from the rotation space of the extrusion screw, the outside of the extruder 1 from the rotation space of the extrusion screw. The toothed ring 52 is used to drive the retaining ring 51 and the two sealing plates 53 to rotate.

[0032] Furthermore, the second drive component 6 includes a second motor 61 disposed on the lower left side of the extruder 1, and a second gear 62 is rotatably connected to the lower left side of the extruder 1. The left side of the second gear 62 is disposed on the drive end of the second motor 61, and the second gear 62 meshes with the gear ring 52.

[0033] Motor 2 61 can drive gear 2 62 to rotate, and gear 2 62 is used to drive gear ring 52 to rotate.

[0034] After prolonged use, material particles will adhere to the outer circumference of the extrusion screw, necessitating cleaning. Before cleaning, the device's sealing mechanism must be opened, and motor 61 is started to drive gear 62. Gear 62 drives gear ring 52 to rotate clockwise, which in turn rotates the two sealing plates 53 and the fixing ring 51. At this point, the two sealing plates 53 will be completely misaligned with the two sealing openings 54. Then, the extrusion screw can be cleaned. During cleaning, the extrusion screw should be kept rotating at a low speed, allowing water pipe 25 to be connected to steam. Motor 31 is started to drive reciprocating screw 32 to rotate. The reciprocating screw 32 pushes the drive block 21 to slide left and right at a uniform speed around the outer circumference of the reciprocating screw 32 and slide bar 42. When block 21 moves, it drives gear 34 and drive plate 22 to move. Driven by toothed plate 33, gear 34 can drive drive plate 22 to rotate. Driven by drive groove 24, nozzle 23 can be pushed and slid by drive plate 22. At this time, nozzle 23 will spray high temperature water vapor on the outer periphery of extrusion screw during the swinging and sliding process. High temperature water vapor can heat and soften the attached material and then fall off. The attached material will leave from the closed port 54 at the bottom of extruder 1. After the extrusion screw is cleaned, the steam supply of motor 31 and water pipe 25 is turned off, and then motor 61 is started to rotate in the opposite direction. Through transmission, the two closed plates 53 can rotate and overlap with the two closed ports 54, thereby sealing the working space of extrusion screw.

[0035] Example 2: Please refer to Figure 6 Based on Embodiment 1, this utility model provides another technical solution: a fixing rod 12 is provided on the front side of the drive block 21, a quick connector 13 is provided inside the fixing rod 12, the end of the water pipe 25 away from the nozzle 23 is provided on the right end of the quick connector 13, a sliding groove 14 is provided on the upper part of the extruder 1, and the fixing rod 12 is slidably connected inside the sliding groove 14.

[0036] The fixed rod 12 can drive the quick connector 13 and the water pipe 25 to move with the drive block 21. The quick connector 13 is used to provide an interface for quick connection of the water pipe 25. The sliding groove 14 provides sliding space for the fixed rod 12. The quick connector 13 facilitates the use of the water pipe 25. The movement range of the nozzle 23 with the drive block 21 is fixed. By allowing the water pipe 25 and the quick connector 13 to move together with the fixed rod 12 and the drive block 21, the length of the water pipe 25 can be reduced. When the device moves, the water pipe 25 and the steam output pipe can be disconnected. This reduces the friction between the water pipe 25 and the extruder 1 during movement and facilitates the movement of the extruder 1.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A single screw extruder with easy cleaning comprising an extruder (1) characterized by: The inside of the extruder (1) is provided with a cleaning part (2) for cleaning the extrusion screw, the lower part of the extruder (1) is provided with a plurality of uniformly distributed supports (11), and the inside of the extruder (1) is provided with a closing part (5) for closing and opening the extruder abdomen.

2. The easy-to-clean single screw extruder of claim 1, wherein: The cleaning part (2) comprises a driving block (21) and a spray head (23) slidingly connected in the inside of the upper part of the extruder (1), the inside of the driving block (21) is rotatably connected with a driving plate (22), the lower part of the driving plate (22) is provided with a driving groove (24), the upper end of the spray head (23) is slidingly connected in the inside of the driving groove (24), the left side of the spray head (23) is provided with a water pipe (25), the inside of the extruder (1) is provided with a guide (4) for stabilizing the movement of the spray head (23) and the driving block (21), and the inside of the extruder (1) is provided with a driving part one (3) for driving the movement of the driving block (21).

3. The easy-to-clean single screw extruder of claim 2, wherein: The driving part one (3) comprises a reciprocating screw (32) rotatably connected to the inside of the upper part of the extruder (1), the right side of the upper part of the extruder (1) is provided with a motor one (31), the right end of the reciprocating screw (32) is arranged at the driving end of the motor one (31), the driving block (21) is threadedly connected to the outer periphery of the reciprocating screw (32), the upper end of the driving plate (22) is provided with a gear one (34), and the inside of the upper part of the extruder (1) is provided with a toothed plate (33), the gear one (34) and the toothed plate (33) are meshed with each other.

4. The easy-to-clean single screw extruder of claim 2, wherein: The guide (4) comprises a sliding rod (42) arranged in the inside of the upper part of the extruder (1), the driving block (21) is slidingly connected to the outer periphery of the sliding rod (42), guide blocks (41) are arranged on the front and back sides of the spray head (23), and the inside of the upper part of the extruder (1) is provided with a guide groove (43), the guide blocks (41) are slidingly connected in the inside of the guide groove (43).

5. The easy-to-clean single screw extruder of claim 1, wherein: The closing part (5) comprises a fixed ring (51) and a gear ring (52) rotatably connected to the inside of the lower part of the extruder (1), the upper and lower parts of the side close to the fixed ring (51) and the gear ring (52) are both provided with a closing plate (53), the inside of the extruder (1) is provided with two closing openings (54), the closing plate (53) is slidingly connected in the inside of the closing opening (54), and the inside of the lower part of the extruder (1) is provided with a driving part two (6) for driving the rotation of the gear ring (52).

6. The easy-to-clean single screw extruder of claim 5, wherein: The driving part two (6) comprises a motor two (61) arranged on the left side of the lower part of the extruder (1), a gear two (62) rotatably connected to the left side of the lower part of the extruder (1), the left side of the gear two (62) is arranged at the driving end of the motor two (61), and the gear two (62) and the gear ring (52) are meshed with each other.

7. The easy-to-clean single screw extruder of claim 2, wherein: The front side of the driving block (21) is provided with a fixed rod (12), the inside of the fixed rod (12) is provided with a quick connector (13), one end of the water pipe (25) away from the spray head (23) is arranged at the right end of the quick connector (13), and the upper portion of the extruder (1) is provided with a sliding groove (14).

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