A twin-screw extrusion granulator

Abstract

The utility model discloses a double screw extruding granulator, including the feed hopper of the granulator body top, the top of feed hopper is provided with the support bucket and the filter plate, the outside wall of support bucket is connected with the inside wall of feed hopper and slides, the bottom vertical of support bucket is provided with the support groove, the sidewall of support groove is connected with the sidewall of filter plate, be provided with lifting mechanism on support bucket, the utility model discloses simple structure, reasonable in design, through the support bucket of feed hopper top, filter plate and lifting mechanism, when raw materials are transmitted to feed hopper, filter raw materials, make raw materials hard impurity or not melt granule etc. Dirt transmission to filter plate, reduce the damage that dirt causes to the granulator body, prolong the service life of granulator body.

Description

Technical Field

[0001] This utility model relates to the technical field of granulators, specifically a twin-screw extrusion granulator. Background Technology

[0002] Twin-screw extruders are core equipment in polymer material processing, widely used in plastic modification, masterbatch preparation, food and pharmaceuticals, and biodegradable materials. Compared to single-screw extruders, twin-screw extruders offer significant advantages in mixing efficiency, conveying stability, and process flexibility.

[0003] The shortcomings of existing technology:

[0004] The aforementioned twin-screw extruder granulator includes a granulator body and a feed hopper. The feed hopper is connected to the granulator body, and operators transfer raw materials into the feed hopper, which are then transferred to the granulator body for processing. When the raw material contains hard impurities or unmelted particles, these contaminants can easily scratch the twin screws inside the granulator body, causing an increased wear rate and affecting the service life of the twin screws, which in turn affects the service life of the granulator body. Utility Model Content

[0005] The purpose of this invention is to provide a twin-screw extruder granulator to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A twin-screw extruder granulator includes a feed hopper located at the top of the granulator body. A support barrel and a filter plate are disposed at the top of the feed hopper. The outer wall of the support barrel is slidably connected to the inner wall of the feed hopper. A support groove is vertically formed at the bottom of the support barrel, and the side wall of the support groove is connected to the side wall of the filter plate. A lifting mechanism is disposed on the support barrel, and the lifting mechanism includes:

[0008] A lifting plate, which is located at the top of the support barrel and connected to the support barrel, and whose bottom is used to abut against the top of the feed hopper;

[0009] A drive source is located at the top of the feed hopper and is connected to the lifting plate and used to drive the lifting plate to move up and down.

[0010] Preferably, the top of the feed hopper is vertically provided with a lifting slot, and the driving source includes:

[0011] A screw, one end of which is located in the lifting groove and connected to the side wall of the lifting groove, and the other end of which is threaded through the lifting plate and extends to the outside of the lifting plate. A pusher is provided on the screw, and the pusher is connected to the lifting plate and used to push the lifting plate to move.

[0012] A lifting rod is located on one side of a screw, with its bottom end connected to the bottom wall of a lifting groove, and its other end passing through a lifting plate and slidably connected to the lifting plate.

[0013] A drive motor is located inside the lifting groove and connected to the bottom wall of the lifting groove. The output shaft of the drive motor is coaxially connected to the screw.

[0014] Preferably, the pushing member includes:

[0015] A push rod is located at the top of the screw and coaxially connected to the screw, and the side wall of the push rod is slidably connected to the lifting plate;

[0016] A push spring is located at the bottom of the lifting plate, with one end of the push spring connected to the top of the feed hopper and the other end of the push spring abutting against the bottom of the lifting plate.

[0017] Preferably, a support plate is provided on the top of the lifting plate, and the support plate is detachably connected to the lifting plate. A rotating motor, a rotating shaft, and a cleaning mechanism are provided on the support plate. The rotating motor is connected to the support plate, and the output shaft of the rotating motor is coaxially connected to the rotating shaft. The top of the rotating shaft is rotatably connected to the support plate, and the bottom of the rotating shaft extends into the support barrel. The cleaning mechanism is located on the rotating shaft, and the cleaning mechanism contacts the inner wall of the support barrel and is used to clean the inner wall of the support barrel.

[0018] Preferably, the cleaning mechanism includes:

[0019] A horizontal plate is sleeved on a rotating shaft and connected to the side wall of the rotating shaft. A transmission groove is horizontally opened on the side wall of the horizontal plate away from the rotating shaft.

[0020] A transmission plate, one end of which extends into the transmission groove and is slidably connected to the side wall of the transmission groove, and a cleaning plate is provided on the other end of the transmission plate, the side wall of which abuts against the inner side wall of the support barrel.

[0021] A transmission spring is located inside a transmission groove. One end of the transmission spring is connected to the side wall of the transmission groove, and the other end of the transmission spring is connected to the side wall of the transmission plate.

[0022] Preferably, the bottom of the cleaning plate is provided with a scraper, the bottom of the scraper abuts against the bottom wall of the support barrel, and a connecting groove is horizontally opened on the side of the scraper near the rotating shaft. A connecting spring and a connecting plate are provided in the connecting groove. One end of the connecting spring is connected to the side wall of the connecting groove, and the other end of the connecting spring is connected to the side wall of the connecting plate. One end of the connecting plate extends into the connecting groove and is slidably connected to the side wall of the connecting groove. The other end of the connecting plate abuts against the side wall of the rotating shaft, and the bottom of the connecting plate abuts against the bottom wall of the support barrel.

[0023] Preferably, a ball bearing is provided on the side wall of the connecting plate, one side of the ball bearing is connected to the side wall of the connecting plate, and the other side of the ball bearing is in contact with the side wall of the connecting groove.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] 1. This twin-screw extruder granulator, through the support barrel, filter plate and lifting mechanism set at the top of the feed hopper, when the raw material contains hard impurities or unmelted particles and other contaminants, the contaminants are easily transferred to the filter plate, thereby making it difficult for the contaminants to be transferred into the granulator body, thus reducing the damage to the two screws in the granulator body, thereby protecting the granulator body and extending the service life of the granulator body;

[0026] 2. This twin-screw extruder granulator, through a support plate, rotating motor, rotating shaft, cleaning mechanism and scraper set on the lifting plate, allows the operator to start the rotating motor, thereby causing the cleaning plate to abut against the inner wall of the support barrel and the scraper to abut against the bottom wall of the support barrel, thus scraping off the raw material inside the support barrel. This prevents the raw material from adhering to the support barrel, allowing the raw material to be transferred to the feed hopper, thereby reducing raw material waste and saving raw materials. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0028] Figure 2 This is an exploded view of part of the structure of this utility model, mainly showing the lifting mechanism;

[0029] Figure 3 This is an exploded view of part of the structure of this utility model, mainly showing the support groove;

[0030] Figure 4 This is an exploded view of part of the structure of this utility model, mainly showing the transmission groove.

[0031] In the diagram: 1. Granulator body; 11. Feed hopper; 12. Lifting trough; 2. Support barrel; 21. Support trough; 22. Filter plate; 3. Lifting mechanism; 31. Lifting plate; 32. Drive source; 321. Drive motor; 322. Screw; 323. Lifting rod; 4. Pushing component; 41. Push spring; 42. Push rod; 51. Support plate; 52. Rotating motor; 53. Rotating shaft; 6. Cleaning mechanism; 61. Horizontal plate; 62. Transmission plate; 63. Transmission spring; 64. Cleaning plate; 71. Transmission trough; 72. Connecting trough; 81. Scraper; 82. Connecting spring; 83. Connecting plate; 9. Ball bearing. Detailed Implementation

[0032] 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.

[0033] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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 component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integrated connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" means two or more, unless otherwise explicitly specified.

[0036] Please see Figure 1-4 As shown, this utility model provides a technical solution for a twin-screw extruder granulator:

[0037] A twin-screw extruder granulator includes a feed hopper 11 located at the top of the granulator body 1. The top of the feed hopper 11 has two vertically arranged lifting grooves 12, which are evenly distributed along the circumference of the feed hopper 11. A support barrel 2 and a lifting mechanism 3 are installed on the top of the feed hopper 11. The outer wall of the vertically arranged support barrel 2 is slidably connected to the inner wall of the feed hopper 11. The bottom of the support barrel 2 has a vertically arranged support groove 21. A filter plate 22 is installed in the support groove 21. The side wall of the horizontally arranged filter plate 22 is fixedly connected to the side wall of the support groove 21.

[0038] The lifting mechanism 3 includes a drive source 32 and a lifting plate 31. The drive source 32 includes a drive motor 321, a screw 322, and a lifting rod 323. The drive motor 321 is located at the bottom of the feed hopper 11 and is connected to the feed hopper 11. The output shaft of the drive motor 321 passes through the lifting groove 12 and is coaxially and fixedly connected to the screw 322. The bottom of the vertically arranged screw 322 is rotatably connected to the bottom wall of the lifting groove 12. The top of the screw 322 is threadedly connected to the lifting plate 31. There are two horizontally arranged lifting plates 31, and both lifting plates 31 are located at the top of the support barrel 2. The two lifting plates 31 correspond one-to-one with the two lifting grooves 12. The vertically arranged lifting rod 323 is located on one side of the screw 322, and the bottom of the lifting rod 323 is fixedly connected to the bottom wall of the lifting groove 12. The side wall of the lifting rod 323 is slidably connected to the lifting plate 31.

[0039] A pusher 4 is installed on the lifting plate 31. The pusher 4 includes a push spring 41 and a push rod 42. The vertically arranged push rod 42 is sleeved on the lifting rod 323, and the top of the push spring 41 abuts against the bottom of the lifting plate 31. The bottom of the push spring 41 is fixedly connected to the top of the feed hopper 11. The vertically arranged push rod 42 is located at the top of the screw 322 and is fixedly connected to the screw 322 coaxially. The side wall of the push rod 42 is used for sliding connection with the lifting plate 31.

[0040] Before the staff transfers the raw materials to the feed hopper 11, the staff needs to transfer the raw materials to the support bucket 2 at the top of the feed hopper 11. After the raw materials are filtered by the filter plate 22, the hard impurities and unmelted particles in the raw materials are transferred to the filter plate 22, thereby reducing the damage to the two screws 322 inside the granulator body 1 caused by the contaminants, thus protecting the two screws 322, and in turn protecting the granulator body 1, and extending the service life of the granulator body 1. When buildup on the filter plate 22 affects its filtration function, the operator starts the drive motor 321. The output shaft of the drive motor 321 rotates, causing the screw 322 to rotate synchronously. Through the lifting rod 323, the lifting plate 31 moves away from the feed hopper 11, thereby moving the support barrel 2 and the filter plate 22 synchronously until the lifting plate 31 disengages from the screw 322. At this point, driven by the elastic potential energy of the push spring 41 and limited by the push rod 42, the lifting plate 31 continues to move away from the feed hopper 11. This facilitates the operator's disassembly and replacement of the support barrel 2 and the filter plate 22, reducing workload. Furthermore, the support barrel 2 and the filter plate 22 are both located inside the feed hopper 11, minimizing space occupation.

[0041] A support plate 51 is horizontally mounted on the lifting plate 31 near the lifting rod 323. The side wall of the support plate 51 is detachably connected to the side wall of the lifting plate 31 by bolts. A rotating motor 52, a rotating shaft 53, and a cleaning mechanism 6 are mounted on the support plate 51. The rotating motor 52 is located at the top of the support and is fixedly connected to the support plate 51. The output shaft of the rotating motor 52 passes through the support plate 51 and is coaxially fixedly connected to the rotating shaft 53. The bottom of the vertically arranged rotating shaft 53 extends into the support barrel 2.

[0042] The cleaning mechanism 6 includes a horizontal plate 61, a transmission spring 63, a transmission plate 62, and a cleaning plate 64. One side of the horizontally arranged horizontal plate 61 is fitted onto the side wall of the rotating shaft 53 and is fixedly connected to the rotating shaft 53. A transmission groove 71 is horizontally opened on the other side of the horizontal plate 61. The horizontally arranged transmission spring 63 is located in the transmission groove 71 and is fixedly connected to the side wall of the transmission groove 71. The other end of the transmission spring 63 is fixedly connected to the side wall of the transmission plate 62. One end of the horizontally arranged transmission plate 62 extends into the transmission groove 71 and is slidably connected to the side wall of the transmission groove 71. The other end of the transmission plate 62 is fixedly connected to the side wall of the cleaning plate 64. The side wall of the vertically arranged cleaning plate 64 abuts against the inner side wall of the support barrel 2. The cleaning plate 64 is used to scrape off the raw materials on the inner side wall of the support barrel 2, thereby reducing the waste of raw materials and saving resources. The bottom of the cleaning plate 64 is equipped with a scraper 81, a connecting spring 82, and a connecting plate 83. One side of the horizontally arranged scraper 81 abuts against the inner wall of the support barrel 2, and the other side of the scraper 81 has a horizontally arranged connecting groove 72. The connecting groove 72 is T-shaped, and the horizontally arranged connecting spring 82 is located in the connecting groove 72. One end of the connecting spring 82 is fixedly connected to the side wall of the connecting groove 72, and the other end of the connecting spring 82 is fixedly connected to the side wall of the connecting plate 83. The horizontally arranged connecting plate 83 is T-shaped. One side of the connecting plate 83 is slidably connected to the side wall of the connecting groove 72, and the other side of the connecting plate 83 abuts against the side wall of the rotating shaft 53. The bottom of the connecting plate 83 abuts against the bottom wall of the support barrel 2. Through the abutment between the side wall of the connecting plate 83 and the side wall of the rotating shaft 53, the connecting plate 83 is not easy to detach from the connecting groove 72, thus improving the stability of the connecting plate 83. A ball bearing 9 is installed on the side wall of the connecting plate 83. One side of the ball bearing 9 is rotatably connected to the side wall of the connecting plate 83, and the other side of the ball bearing 9 contacts the side wall of the connecting groove 72, thereby reducing wear between the connecting plate 83 and the side wall of the connecting groove 72 and extending the service life of the connecting plate 83.

[0043] When raw materials are transferred from the support barrel 2 to the feed hopper 11, some raw materials may remain on the inner wall of the support barrel 2. To reduce material waste, the operator starts the rotating motor 52. The output shaft of the rotating motor 52 rotates, causing the rotating shaft 53 to rotate synchronously. This, in turn, causes the horizontal plate 61, the transmission plate 62, the cleaning plate 64, the scraper 81, and the connecting plate 83 to rotate synchronously. The side walls of the cleaning plate 64 and the scraper 81 abut against the inner wall of the support barrel 2, thereby scraping away the residual raw materials on the inner wall of the support barrel 2. The bottom of the scraper 81 and the connecting plate 83 abut against the bottom wall of the support barrel 2, thereby scraping away the residual raw materials on the bottom wall of the support barrel 2. This prevents raw materials from remaining on the inner wall of the support barrel 2, reducing material waste and saving raw materials.

[0044] The working principle of this utility model is as follows:

[0045] In this embodiment of the twin-screw extruder granulator, before the operator transfers the raw material to the feed hopper 11, the operator first transfers the raw material to the support barrel 2. Through the filtering effect of the filter plate 22 in the support barrel 2, hard impurities or unmelted particles and other contaminants in the raw material are left on the filter plate 22. This makes it difficult for hard impurities or unmelted particles and other contaminants to be transferred to the granulator body 1 and damage the two screws 322 inside the granulator body 1, thereby protecting the granulator body 1 and extending its service life. The operator starts the rotating motor 52, and the output shaft of the rotating motor 52 rotates, which drives the rotating shaft 53 to rotate synchronously. This causes the horizontal plate 61, the transmission plate 62, the cleaning plate 64, the scraper 81, and the connecting plate 83 to rotate synchronously. The cleaning plate 64 and the scraper 81 are used to scrape off the residual raw materials on the side wall of the support barrel 2, and the scraper 81 and the connecting plate 83 are used to scrape off the raw materials on the bottom wall of the support barrel 2. This allows the raw materials to separate from the inner wall of the support barrel 2 and then be transferred to the feed hopper 1 after passing through the filter plate 22, thereby reducing the waste of raw materials and saving raw materials. When dirt accumulates on the filter plate 22 and affects its filtration effect, the operator starts the drive motor 321. The output shaft of the drive motor 321 rotates, causing the screw 322 to move synchronously. Through the limiting action of the lifting rod 323, the two lifting plates 31 move away from the feed hopper 11, thereby driving the support barrel 2 and the filter plate 22 to move synchronously. After the lifting plate 31 disengages from the screw 322, the elastic potential energy of the pushing spring 41, under the limiting action of the pushing rod 42, causes the lifting plate 31 to continue moving away from the feed hopper 11, thereby disengaging the support barrel 2 from the feed hopper 11. This makes it convenient for the operator to disassemble and replace the support barrel 2 and the filter plate 22, saving the operator's workload, time, and effort.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A twin-screw extruder granulator, comprising a feed hopper (11) located at the top of the granulator body (1), characterized in that: The top of the feed hopper (11) is provided with a support barrel (2) and a filter plate (22). The outer side wall of the support barrel (2) is slidably connected to the inner side wall of the feed hopper (11). The bottom of the support barrel (2) is vertically provided with a support groove (21). The side wall of the support groove (21) is connected to the side wall of the filter plate (22). The support barrel (2) is provided with a lifting mechanism (3). The lifting mechanism (3) includes: Lifting plate (31), the lifting plate (31) is located at the top of the support barrel (2) and connected to the support barrel (2), the bottom of the lifting plate (31) is used to abut against the top of the feed hopper (11); The drive source (32) is located at the top of the feed hopper (11) and is connected to the lifting plate (31) and is used to drive the lifting plate (31) to rise and fall.

2. The twin-screw extruder granulator according to claim 1, characterized in that: The top of the feed hopper (11) is vertically provided with a lifting groove (12), and the drive source (32) includes: A screw (322) is provided, one end of which is located in the lifting groove (12) and connected to the side wall of the lifting groove (12). The other end of the screw (322) is threaded through the lifting plate (31) and extends to the outside of the lifting plate (31). A pusher (4) is provided on the screw (322). The pusher (4) is connected to the lifting plate (31) and is used to push the lifting plate (31) to move. The lifting rod (323) is located on one side of the screw (322). The bottom of the lifting rod (323) is connected to the bottom wall of the lifting groove (12). The other end of the lifting rod (323) passes through the lifting plate (31) and is slidably connected to the lifting plate (31). The drive motor (321) is located in the lifting groove (12) and connected to the bottom wall of the lifting groove (12). The output shaft of the drive motor (321) is coaxially connected to the screw (322).

3. The twin-screw extruder granulator according to claim 2, characterized in that: The pusher (4) includes: Push rod (42), the push rod (42) is located at the top of screw (322) and coaxially connected with screw (322), the side wall of the push rod (42) is slidably connected with lifting plate (31); A push spring (41) is located at the bottom of the lifting plate (31). One end of the push spring (41) is connected to the top of the feed hopper (11), and the other end of the push spring (41) abuts against the bottom of the lifting plate (31).

4. The twin-screw extruder granulator according to claim 1, characterized in that: The top of the lifting plate (31) is provided with a support plate (51), which is detachably connected to the lifting plate (31). The support plate (51) is provided with a rotating motor (52), a rotating shaft (53) and a cleaning mechanism (6). The rotating motor (52) is connected to the support plate (51), and the output shaft of the rotating motor (52) is coaxially connected to the rotating shaft (53). The top of the rotating shaft (53) is rotatably connected to the support plate (51), and the bottom of the rotating shaft (53) extends into the support barrel (2). The cleaning mechanism (6) is located on the rotating shaft (53), and the cleaning mechanism (6) contacts the inner wall of the support barrel (2) and is used to clean the inner wall of the support barrel (2).

5. A twin-screw extruder granulator according to claim 4, characterized in that: The cleaning mechanism (6) includes: A horizontal plate (61) is sleeved on the rotating shaft (53) and connected to the side wall of the rotating shaft (53). A transmission groove (71) is horizontally opened on the side wall of the horizontal plate (61) away from the rotating shaft (53). A transmission plate (62) is provided at one end, which extends into the transmission groove (71) and is slidably connected to the side wall of the transmission groove (71). A cleaning plate (64) is provided at the other end of the transmission plate (62), and the side wall of the cleaning plate (64) abuts against the inner side wall of the support barrel (2). A transmission spring (63) is located inside a transmission groove (71). One end of the transmission spring (63) is connected to the side wall of the transmission groove (71), and the other end of the transmission spring (63) is connected to the side wall of a transmission plate (62).

6. A twin-screw extruder granulator according to claim 5, characterized in that: The bottom of the cleaning plate (64) is provided with a scraper (81), the bottom of the scraper (81) abuts against the bottom wall of the support barrel (2), and a connecting groove (72) is horizontally opened on the side of the scraper (81) near the rotating shaft (53). A connecting spring (82) and a connecting plate (83) are provided in the connecting groove (72). One end of the connecting spring (82) is connected to the side wall of the connecting groove (72), and the other end of the connecting spring (82) is connected to the side wall of the connecting plate (83). One end of the connecting plate (83) extends into the connecting groove (72) and slides against the side wall of the connecting groove (72). The other end of the connecting plate (83) abuts against the side wall of the rotating shaft (53), and the bottom of the connecting plate (83) abuts against the bottom wall of the support barrel (2).

7. A twin-screw extruder granulator according to claim 6, characterized in that: The connecting plate (83) has a ball bearing (9) on its side wall. One side of the ball bearing (9) is connected to the side wall of the connecting plate (83), and the other side of the ball bearing (9) is in contact with the side wall of the connecting groove (72).

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