Feeding pipeline cleaning mechanism and extruder

Abstract

The utility model relates to the field of feeding pipelines, in particular to a feeding pipeline cleaning mechanism and an extruder. Wherein the feeding pipeline cleaning mechanism comprises a feeding hopper, a lifting mechanism, a magnet filtering plate and a magnet cleaning plate, the lifting mechanism is installed in the feeding hopper, the magnet cleaning plate is installed above the magnet filtering plate, the magnet filtering plate and / or the magnet cleaning plate are / is connected with the lifting mechanism, during feeding, the magnet filtering plate adsorbs metal impurities in materials, and when filtering holes are blocked, the magnet filtering plate is separated from the magnet cleaning plate. The lifting mechanism enables the magnet filtering plate and the magnet cleaning plate to be close to each other, metal impurities are adsorbed to the magnet cleaning plate, and manual cleaning after the magnet filtering plate is detached is not needed; the extruder comprises a feeding pipeline, a spiral auger, a second driving device used for driving the spiral auger to rotate and a feeding pipeline cleaning mechanism, the second driving device is fixedly connected with the spiral auger, the second driving device drives the spiral auger to rotate and conveys purified materials, and when the feeding hopper is blocked, cleaning is conducted through the cleaning mechanism.

Description

Technical Field

[0001] This utility model relates to the field of feed pipelines, and more specifically, to a feed pipeline cleaning mechanism and an extruder. Background Technology

[0002] In the existing technology, the feed pipe of the extruder mainly feeds PVC raw materials through the rotation of the internal screw to achieve processing and production. When PVC raw materials are poured into the feed pipe through the hopper, metal impurities in the raw materials can be adsorbed by a magnetic block. However, the magnetic block is prone to clogging after long-term operation, and the metal impurities need to be cleaned manually, which increases the workload of employees. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology that requires manual cleaning of metal impurities, and to provide a material supply pipeline cleaning mechanism that can separate metal impurities from the magnetic filter plate without manual cleaning.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A material feeding pipeline cleaning mechanism is provided, including a feeding hopper, a lifting mechanism, a magnetic filter plate, and a magnetic cleaning plate. The lifting mechanism is installed in the feeding hopper, the magnetic filter plate is located at the bottom opening of the feeding hopper, and the magnetic filter plate has filter holes that allow material to pass through. The magnetic cleaning plate is installed on the feeding hopper and is located above the magnetic filter plate. The magnetic force of the magnetic cleaning plate is greater than that of the magnetic filter plate. The magnetic filter plate and / or the magnetic cleaning plate are connected to the lifting mechanism.

[0006] This utility model's feeding pipeline cleaning mechanism involves pouring material into the feeding hopper. Under gravity, the material passes through the filter holes on the magnetic filter plate. Metal impurities in the material are attracted to the magnetic filter plate by magnetic force. When the magnetic filter plate accumulates too many metal impurities, blocking the filter holes, a lifting mechanism drives the magnetic filter plate towards a magnetic cleaning plate, or vice versa, or both the magnetic filter plate and the magnetic cleaning plate move towards each other, bringing them closer together. Because the magnetic cleaning plate has a stronger magnetic force on metal, the metal impurities on the magnetic filter plate are attracted to it, thus cleaning the magnetic filter plate and preventing filter hole blockage. This eliminates the need for manual cleaning after disassembling the magnetic filter plate, reducing workload.

[0007] Furthermore, both the magnetic filter plate and the magnetic cleaning plate are connected to the lifting mechanism, and the moving direction of the magnetic cleaning plate is opposite to that of the magnetic filter plate. When cleaning the magnetic filter plate, the lifting mechanism drives the magnetic filter plate and the magnetic cleaning plate to move towards each other. Once they approach each other, the metal impurities on the magnetic filter plate are adsorbed onto the magnetic cleaning plate, completing the cleaning process. The opposing movement of the magnetic filter plate and the magnetic cleaning plate shortens their moving distance, reduces cleaning time, and improves cleaning efficiency.

[0008] Furthermore, the lifting mechanism includes a screw and a first driving device for controlling the rotation of the screw. The output end of the first driving device is fixedly connected to the screw. A fixed frame is installed on the feed hopper, and the first driving device is fixedly installed on the fixed frame. The screw is threadedly connected to the magnetic filter plate, and the magnetic cleaning plate is installed on the fixed frame. The side of the magnetic filter plate contacts the inner wall of the feed hopper. When the lifting mechanism is working, the first driving device drives the screw to rotate. Since the side of the magnetic filter plate contacts the inner wall of the feed hopper, the feed hopper limits the magnetic filter plate, preventing it from rotating with the screw. Since the screw is threadedly connected to the magnetic filter plate, the screw drives the magnetic filter plate to move along the screw, thereby causing the magnetic filter plate to approach or move away from the magnetic cleaning plate.

[0009] Furthermore, the fixing frame includes a fixing rod and a first connecting member. The screw includes an upper screw and a lower screw with opposite thread directions. The first connecting member is fixedly connected to the top of the fixing rod. The first driving device is fixed to the first connecting member. The fixing rod passes through the magnetic cleaning plate. The upper screw is threadedly connected to the magnetic cleaning plate, and the lower screw is threadedly connected to the magnetic filter plate. The fixing rod limits the magnetic cleaning plate, preventing it from rotating with the screw. When the first driving device drives the screw to rotate, the upper and lower screws have opposite thread directions. Therefore, the direction in which the upper screw drives the magnetic cleaning plate to move through the threaded engagement is opposite to the direction in which the lower screw drives the magnetic filter plate to move, causing the magnetic cleaning plate and the magnetic filter plate to move towards each other. After the magnetic cleaning plate and the magnetic filter plate approach each other, the magnetic cleaning plate adsorbs the metal impurities on the magnetic filter plate, completing the cleaning process.

[0010] Furthermore, it also includes a collection box disposed on the outer periphery of the feed hopper. The opening height of the collection box is no higher than the opening height of the feed hopper. The collection box abuts against the outer wall of the feed hopper. The maximum height of the magnetic filter plate is no less than the opening height of the feed hopper, and the side of the magnetic filter plate contacts the inner wall of the feed hopper. When the lifting mechanism drives the magnetic filter plate upward to the opening position of the feed hopper, some metal impurities overflow from the opening of the feed hopper and fall into the collection box for easy cleaning.

[0011] Furthermore, the system also includes a level sensor for detecting the material accumulation height on the magnetic filter plate, the level sensor being installed inside the feed hopper. The level sensor can be used to monitor whether the filter holes on the magnetic filter plate are clogged, saving time spent on manual inspection and improving production efficiency.

[0012] Furthermore, a mounting block is fixedly provided on the top of the inner wall of the feed hopper, and the level indicator is detachably mounted on the mounting block. When the lifting mechanism controls the lifting of the magnetic filter plate, the level indicator can be removed from the feed hopper to prevent interference between the level indicator and the magnetic filter plate.

[0013] Furthermore, it also includes a second connector and a pin. The mounting block has an inner cavity extending through it. The second connector is slidably installed in the inner cavity. The mounting block has a first pin hole, and the second connector has a second pin hole. The pin passes through both the first and second pin holes, and the level sensor is fixedly connected to the second connector. When installing the level sensor, the second connector is slidably inserted into the inner cavity of the mounting block, and the level sensor is fixed to the second connector. The first pin hole on the mounting block is aligned with the second pin hole on the second connector. The pin is then inserted into both the first and second pin holes, thereby installing the second connector on the mounting block and completing the installation of the level sensor.

[0014] An extruder is also provided, comprising a feeding pipe, a spiral auger, a second drive device for driving the spiral auger to rotate, and a feeding pipe cleaning mechanism as described above. The second drive device is fixedly installed at the end of the feeding pipe, and its output end passes through the end face of the feeding pipe and is fixedly connected to the spiral auger. The feed hopper is fixedly installed at the top of the feeding pipe, and the interior of the feed hopper communicates with the interior of the feeding pipe. When the extruder is working, material is fed into the feed hopper, and a magnetic filter plate adsorbs metal impurities in the material for purification. After passing through the filter holes, the material enters the feeding pipe. The second drive device drives the spiral auger to rotate, moving the material along the spiral auger for feeding. When metal impurities in the feed hopper clog or are about to clog the filter holes, a lifting mechanism drives the magnetic filter plate to move towards a magnetic cleaning plate, which adsorbs the metal impurities on the magnetic filter plate, completing the cleaning.

[0015] Furthermore, it also includes a frequency converter for adjusting the rotational speed of the second drive device. The frequency converter is installed on the outer wall of the feeding pipe and is connected to the second drive device. The frequency converter can adjust the rotational speed of the screw conveyor by adjusting the rotational speed of the second drive device, thereby controlling the feeding speed and improving the material conveying stability.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] The present invention relates to a feeding pipeline cleaning mechanism and an extruder: 1. A lifting mechanism brings the magnetic filter plate and the magnetic cleaning plate closer together, sucking away metal impurities on the magnetic filter plate to achieve cleaning, eliminating the need for manual cleaning after disassembling the magnetic filter plate, thus reducing workload; 2. A collection box is installed on the outside of the feed hopper to collect metal impurities overflowing from the feed hopper when the magnetic filter plate rises, facilitating cleaning; 3. A level sensor detects the material level in the feed hopper to monitor whether metal impurities are clogging the filter holes, which helps to clean metal impurities in a timely manner when the filter holes are clogged. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the material supply pipeline cleaning mechanism of this utility model;

[0019] Figure 2 This is a schematic diagram of the installation block of the material supply pipeline cleaning mechanism of this utility model;

[0020] Figure 3 This is a first structural schematic diagram of the extruder of this utility model;

[0021] Figure 4 This is a schematic diagram of the second structure of the extruder of this utility model;

[0022] In the attached diagram: 1. Feed hopper; 11. Collection box; 111. First support plate; 12. Mounting block; 13. Second connector; 14. Pin; 15. Cover shell; 2. Lifting mechanism; 21. First drive device; 22. Screw; 221. Upper screw; 222. Lower screw; 23. Limiting sleeve; 24. Fixing frame; 241. Fixing rod; 242. First connector; 3. Magnetic filter plate; 31. Filter hole; 4. Magnetic cleaning plate; 5. Material level indicator; 6. Feeding pipe; 7. Second drive device; 8. Spiral auger; 9. Frequency converter; 91. Second support plate. Detailed Implementation

[0023] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0024] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0025] Example 1

[0026] like Figures 1 to 2 The first embodiment of the material supply pipeline cleaning mechanism of this utility model is shown, including a feeding hopper 1, a lifting mechanism 2, a magnetic filter plate 3 and a magnetic cleaning plate 4. The lifting mechanism 2 is installed in the feeding hopper 1. The magnetic filter plate 3 is located at the bottom opening of the feeding hopper 1. The magnetic filter plate 3 is provided with filter holes 31 that allow material to pass through. The magnetic cleaning plate 4 is installed on the feeding hopper 1 and is located above the magnetic filter plate 3. The magnetic force of the magnetic cleaning plate 4 is greater than the magnetic force of the magnetic filter plate 3. The magnetic filter plate 3 and / or the magnetic cleaning plate 4 are connected to the lifting mechanism 2.

[0027] In this utility model, the material feeding pipeline cleaning mechanism involves pouring material into the feeding hopper 1. The material passes through the filter holes 31 on the magnetic filter plate 3 under gravity. Metal impurities in the material are attracted to the magnetic filter plate 3 by magnetic force. When the magnetic filter plate 3 accumulates too many metal impurities, blocking the filter holes 31, the lifting mechanism 2 drives the magnetic filter plate 3 to move towards the magnetic cleaning plate 4, or drives the magnetic cleaning plate 4 to move towards the magnetic filter plate 3, or drives the magnetic filter plate 3 and the magnetic cleaning plate 4 to move towards each other, bringing them closer together. Because the magnetic cleaning plate 4 has a stronger magnetic force on metal, the metal impurities on the magnetic filter plate 3 are attracted to the magnetic cleaning plate 4, thus cleaning the magnetic filter plate 3 and preventing blockage of the filter holes 31. This eliminates the need to disassemble the magnetic filter plate 3 for manual cleaning, thereby reducing workload.

[0028] In this embodiment, as Figure 1 As shown, the surface area and thickness of the magnetic cleaning plate 4 are both greater than those of the magnetic filter plate 3, which makes the magnetic force of the magnetic cleaning plate 4 greater than that of the magnetic filter plate 3.

[0029] Both the magnetic filter plate 3 and the magnetic cleaning plate 4 are connected to the lifting mechanism 2. The moving direction of the magnetic cleaning plate 4 is opposite to that of the magnetic filter plate 3. When cleaning the magnetic filter plate 3, the lifting mechanism 2 drives the magnetic filter plate 3 and the magnetic cleaning plate 4 to move towards each other. After the magnetic filter plate 3 and the magnetic cleaning plate 4 approach each other, the metal impurities on the magnetic filter plate 3 are adsorbed onto the magnetic cleaning plate 4, completing the cleaning. The opposite movement of the magnetic filter plate 3 and the magnetic cleaning plate 4 can shorten the moving distance between them, shorten the cleaning time, and improve the cleaning efficiency.

[0030] Any lifting mechanism 2 capable of driving the magnetic filter plate 3 and the magnetic cleaning plate 4 to move in opposite directions can be applied to this utility model. The lifting mechanism 2 listed in this embodiment is not intended to limit this utility model.

[0031] In this embodiment, as Figure 1 As shown, the lifting mechanism 2 includes a screw 22 and a first drive device 21 that controls the rotation of the screw 22. The output end of the first drive device 21 is fixedly connected to the screw 22. A fixed frame 24 is installed on the feed hopper 1, and the first drive device 21 is fixedly installed on the fixed frame 24. The screw 22 is threadedly connected to the magnetic filter plate 3, and the magnetic cleaning plate 4 is installed on the fixed frame 24. The side of the magnetic filter plate 3 contacts the inner wall of the feed hopper 1. When the lifting mechanism 2 is working, the first drive device 21 drives the screw 22 to rotate. Since the side of the magnetic filter plate 3 contacts the inner wall of the feed hopper 1, the feed hopper 1 acts as a limit for the magnetic filter plate 3, preventing the magnetic filter plate 3 from rotating with the screw 22. Since the screw 22 is threadedly connected to the magnetic filter plate 3, the screw 22 drives the magnetic filter plate 3 to move along the screw 22, thereby causing the magnetic filter plate 3 to approach or move away from the magnetic cleaning plate 4. In this embodiment, the first drive device 21 is a rotary motor.

[0032] like Figure 1As shown, the fixing frame 24 includes a fixing rod 241 and a first connecting member 242. The screw 22 includes an upper screw 221 and a lower screw 222 with opposite thread directions. The first connecting member 242 is fixedly connected to the top of the fixing rod 241. The first driving device 21 is fixed on the first connecting member 242. The fixing rod 241 passes through the magnetic cleaning plate 4. The upper screw 221 is threadedly connected to the magnetic cleaning plate 4, and the lower screw 222 is threadedly connected to the magnetic filter plate 3. The fixing rod 241 serves to limit the magnetic cleaning plate 4, preventing it from rotating with the screw 22. When the first driving device 21 drives the screw 22 to rotate, since the threads of the upper screw 221 and the lower screw 222 are opposite, the upper screw 221 drives the magnetic cleaning plate 4 to move in the opposite direction to the lower screw 222 drives the magnetic filter plate 3 to move in the opposite direction. This causes the magnetic cleaning plate 4 and the magnetic filter plate 3 to move towards each other. After the magnetic cleaning plate 4 and the magnetic filter plate 3 approach each other, the magnetic cleaning plate 4 adsorbs the metal impurities on the magnetic filter plate 3, thus completing the cleaning.

[0033] In this embodiment, the screw 22 is vertical, allowing the magnetic cleaning plate 4 and the magnetic filter plate 3 to move up and down in the vertical direction. A limiting sleeve 23 is fixedly provided on the top of the feed hopper 1. The limiting sleeve 23 has a vertical channel that allows the screw 22 to pass through. The screw 22 passes through the limiting sleeve 23 and contacts the inner wall of the vertical channel. The limiting sleeve 23 can restrict the movement of the screw 22 in the horizontal direction, improving the stability of the screw 22 when rotating and the stability of the magnetic filter plate 3 and the magnetic cleaning plate 4 when moving up and down.

[0034] The working principle of the feeding pipeline cleaning mechanism in this embodiment is as follows: When feeding, the material is poured into the feeding hopper 1. The material passes through the filter holes 31 on the magnetic filter plate 3 under the action of gravity. Metal impurities in the material are attracted to the magnetic filter plate 3 by the magnetic force. When the magnetic filter plate 3 is attracted by too many metal impurities and blocks the filter holes 31, the screw 22 of the first driving device 21 rotates. The upper screw 221 drives the magnetic cleaning plate 4 to move downward through the threaded engagement, and the lower screw 222 drives the magnetic cleaning plate 4 to move upward through the threaded engagement. The magnetic filter plate 3 and the magnetic cleaning plate 4 move towards each other along the screw 22. When the magnetic filter plate 3 and the magnetic cleaning plate 4 are close enough, the magnetic force of the magnetic cleaning plate 4 on the metal is stronger, and the metal impurities on the magnetic filter plate 3 are attracted to the magnetic cleaning plate 4, thereby cleaning the magnetic filter plate 3.

[0035] Example 2

[0036] This embodiment is the second embodiment of the material supply pipeline cleaning mechanism of this utility model. This embodiment is similar to the first embodiment, except that it also includes a collection box 11. The collection box 11 is disposed on the outer periphery of the feed hopper 1. The opening height of the collection box 11 is not higher than the opening height of the feed hopper 1. The collection box 11 abuts against the outer wall of the feed hopper 1. The maximum height of the magnetic filter plate 3 is not lower than the opening height of the feed hopper 1. The side of the magnetic filter plate 3 contacts the inner wall of the feed hopper 1.

[0037] In this embodiment, an annular first support plate 111 is fixedly provided on the outer periphery of the feed hopper 1, and the collection box 11 is placed on the first support plate 111. The collection box 11 can be removed by moving the collection box 11 upward.

[0038] The working principle of the feed pipeline cleaning mechanism in this embodiment is as follows: When the lifting mechanism 2 drives the magnetic filter plate 3 to move upward to the opening position of the feed hopper 1, some metal impurities overflow from the opening of the feed hopper 1 to the surrounding area and fall into the collection box 11. After collection, the collection box 11 is removed from the first support plate 111, the metal impurities are recovered, and the collection box 11 is cleaned.

[0039] Example 3

[0040] This embodiment is the third embodiment of the material supply pipeline cleaning mechanism of this utility model. This embodiment is similar to embodiment two, except that it also includes a level sensor 5 for detecting the material accumulation height on the magnetic filter plate 3. The level sensor 5 is installed in the feed hopper 1. The level sensor 5 can be used to monitor whether the filter holes 31 on the magnetic filter plate 3 are blocked, saving manual inspection time and improving production efficiency.

[0041] In addition, a controller can be set on the feed hopper 1 to connect the level sensor 5 and the first drive device 21 to the controller. When the level sensor 5 detects that the filter hole 31 on the magnetic filter plate 3 is blocked, it sends a signal to the controller. The controller controls the lifting mechanism 2 to drive the magnetic filter plate 3 to move to the magnetic cleaning plate 4 to achieve automatic cleaning and save labor.

[0042] like Figure 1 and Figure 2 As shown, a mounting block 12 is fixedly installed on the top of the inner wall of the feed hopper 1, and the level sensor 5 is detachably mounted on the mounting block 12. When the lifting mechanism 2 controls the lifting of the magnetic filter plate 3, the level sensor 5 can be removed from the feed hopper 1 to prevent interference between the level sensor 5 and the magnetic filter plate 3.

[0043] It also includes a second connector 13 and a pin 14. The mounting block 12 has an inner cavity extending through it. The second connector 13 is slidably installed in the inner cavity. The mounting block 12 has a first pin hole, and the second connector 13 has a second pin hole. The pin 14 passes through the first and second pin holes. The level sensor 5 is fixedly connected to the second connector 13. When installing the level sensor 5, the second connector 13 is slidably inserted into the inner cavity of the mounting block 12, and the level sensor 5 is fixed to the second connector 13. The first pin hole on the mounting block 12 is aligned with the second pin hole on the second connector 13. The pin 14 is then inserted into the first and second pin holes, thereby installing the second connector 13 onto the mounting block 12, completing the installation of the level sensor 5. In this embodiment, the level sensor 5 is connected to the bottom of the second connector 13. The axes of the first and second pin holes are vertical, and the pin 14 is inserted into the first and second pin holes from top to bottom. Figure 2 As shown.

[0044] In this embodiment, the feed hopper 1 is also provided with a shielding shell 15 with openings at the top and bottom. The material level sensor 5 includes a main body and a detection head. The main body is provided with a power supply, a signal converter, a control circuit and an alarm device. The signal converter, control circuit, alarm device and detection head are all connected to the power supply. The detection head and control circuit are all connected to the signal converter. The signal converter converts the detection result of the detection head into an electrical signal and transmits it to the control circuit. When the material height reaches the preset value, the control circuit controls the alarm device to issue a reminder. The main body of the material level sensor 5 is located in the shielding shell 15. The detection head of the material level sensor 5 passes through the bottom opening of the shielding shell 15. The shielding shell 15 can prevent material from entering the interior of the material level sensor 5.

[0045] The working principle of the material supply pipeline cleaning mechanism in this embodiment is as follows: Before feeding, the level device 5 is installed. The second connector 13 is slidably inserted into the inner cavity of the mounting block 12, and the level device 5 is fixed on the second connector 13. The first pin hole on the mounting block 12 is aligned with the second pin hole on the second connector 13. The pin 14 is inserted into the first pin hole and the second pin hole, thereby installing the second connector 13 on the mounting block 12 and completing the installation of the level device 5. During feeding, the level device 5 detects the material accumulation height on the filter plate, which monitors whether the filter holes 31 of the magnetic filter plate 3 are blocked, saving the time of manual inspection. When the filter holes 31 are detected to be blocked, the pin 14 is pulled out from the first pin hole and the second pin hole, and the second connector 13 is removed from the inner cavity of the mounting block 12, thereby removing the level device 5 connected to the second connector 13 to prevent the magnetic filter plate 3 from being blocked by the level device 5 when it rises.

[0046] Example 4

[0047] This embodiment is the first embodiment of the extruder of this utility model, such as... Figure 3 and Figure 4As shown, the extruder includes a feeding pipe 6, a spiral auger 8, a second drive device 7 for driving the spiral auger 8 to rotate, and a feeding pipe cleaning mechanism as described above. The second drive device 7 is fixedly installed at the end of the feeding pipe 6, and its output end passes through the end face of the feeding pipe 6 and is fixedly connected to the spiral auger 8. The feed hopper 1 is fixedly installed at the top of the feeding pipe 6, and the interior of the feed hopper 1 is connected to the interior of the feeding pipe 6. When the extruder is working, the material is fed into the feed hopper 1, and the magnetic filter plate 3 adsorbs the metal impurities in the material for purification. After the material passes through the filter holes 31, it enters the feeding pipe 6. The second drive device 7 drives the spiral auger 8 to rotate, causing the material to move along the spiral auger 8 for feeding. When the metal impurities in the feed hopper 1 block or are about to block the filter holes 31, the lifting mechanism 2 drives the magnetic filter plate 3 to move towards the magnetic cleaning plate 4. The magnetic cleaning plate 4 adsorbs the metal impurities on the magnetic filter plate 3, completing the cleaning. In this embodiment, the second drive device 7 is a rotary motor.

[0048] It also includes a frequency converter 9 for adjusting the speed of the second drive device 7. The frequency converter 9 is installed on the outer wall of the feeding pipe 6 and is connected to the second drive device 7. The frequency converter 9 can adjust the speed of the screw conveyor 8 by adjusting the speed of the second drive device 7, thereby controlling the feeding speed and improving the material conveying stability. A second support plate 91 is fixedly provided on the outer wall of the feeding pipe 6, and the frequency converter 9 is fixedly installed on the second support plate 91.

[0049] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0050] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A feed line cleaning mechanism, characterized by, The device comprises a feeding hopper (1), a lifting mechanism (2), a magnet filter plate (3) and a magnet cleaning plate (4), the lifting mechanism (2) is installed in the feeding hopper (1), the magnet filter plate (3) is located at the bottom opening of the feeding hopper (1), the magnet filter plate (3) is provided with filter holes (31) allowing materials to pass through, the magnet cleaning plate (4) is installed on the feeding hopper (1) and located above the magnet filter plate (3), the magnetic force of the magnet cleaning plate (4) is greater than that of the magnet filter plate (3), and the magnet filter plate (3) and / or the magnet cleaning plate (4) are connected with the lifting mechanism (2).

2. The feed line cleaning mechanism of claim 1, wherein, The magnet filter plate (3) and the magnet cleaning plate (4) are connected with the lifting mechanism (2), and the moving direction of the magnet cleaning plate (4) is opposite to that of the magnet filter plate (3).

3. The feed line cleaning mechanism of claim 1, wherein, The lifting mechanism (2) comprises a screw rod (22) and a first driving device (21) for controlling the rotation of the screw rod (22), the output end of the first driving device (21) is fixedly connected with the screw rod (22), a fixed frame (24) is installed on the feeding hopper (1), the first driving device (21) is fixedly installed on the fixed frame (24), the screw rod (22) is threadedly connected with the magnet filter plate (3), the magnet cleaning plate (4) is installed on the fixed frame (24), and the side surface of the magnet filter plate (3) is in contact with the inner wall of the feeding hopper (1).

4. The feed line cleaning mechanism of claim 3, wherein, The fixed frame (24) comprises a fixed rod (241) and a first connecting piece (242), the screw rod (22) comprises an upper screw rod (221) and a lower screw rod (222) with opposite screw directions, the first connecting piece (242) is fixedly connected with the top of the fixed rod (241), the first driving device (21) is fixed on the first connecting piece (242), the fixed rod (241) penetrates through the magnet cleaning plate (4), the upper screw rod (221) is threadedly connected with the magnet cleaning plate (4), and the lower screw rod (222) is threadedly connected with the magnet filter plate (3).

5. The feed line cleaning mechanism of claim 1, wherein, A collecting box (11) is further arranged on the outer periphery of the feeding hopper (1), the opening height of the collecting box (11) is not higher than the opening height of the feeding hopper (1), the collecting box (11) is in abutment with the outer wall around the feeding hopper (1), the maximum height of the magnet filter plate (3) is not lower than the opening height of the feeding hopper (1), and the side surface of the magnet filter plate (3) is in contact with the inner wall of the feeding hopper (1).

6. The supply line purge mechanism of claim 1, wherein, A material level detector (5) for detecting the material height on the magnet filter plate (3) is further arranged in the feeding hopper (1).

7. The feed line cleaning mechanism of claim 6, wherein, A mounting block (12) is fixedly arranged at the top of the inner wall of the feeding hopper (1), and the material level detector (5) is detachably mounted on the mounting block (12). A mounting block (12) is fixedly arranged at the top of the inner wall of the feeding hopper (1), and the material level detector (5) is detachably mounted on the mounting block (12).

8. The supply line cleaning mechanism of claim 7, wherein, The installation block (12) is provided with an inner cavity penetrating the installation block (12), the second connecting piece (13) is slidingly installed in the inner cavity, the installation block (12) is provided with a first bolt hole, the second connecting piece (13) is provided with a second bolt hole, the bolt (14) penetrates the first bolt hole and the second bolt hole, and the material level gauge (5) is fixedly connected with the second connecting piece (13).

9. An extruder characterized by, The feeding pipe (6), the screw auger (8), the second driving device (7) for driving the screw auger (8) to rotate, and the feeding pipe cleaning mechanism according to any one of claims 1 to 8 are comprised, the second driving device (7) is fixedly installed at the end of the feeding pipe (6), the output end of the second driving device (7) penetrates the end face of the feeding pipe (6) and is fixedly connected with the screw auger (8), and the feeding hopper (1) is fixedly installed at the top of the feeding pipe (6), the inside of the feeding hopper (1) is communicated with the inside of the feeding pipe (6).

10. The extruder of claim 9, wherein, The frequency converter (9) for adjusting the rotating speed of the second driving device (7) is further comprised, the frequency converter (9) is installed on the outer wall of the feeding pipe (6), and the frequency converter (9) is connected with the second driving device (7).

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