Feed hopper for screw extruder

Abstract

The utility model relates to the technical field of screw extruders, and particularly discloses a feed hopper for a screw extruder, which comprises a hopper cover plate, a plurality of cushion blocks are uniformly and fixedly mounted at the upper end of the hopper, the cover plate is positioned at the upper ends of the cushion blocks, one end of the cover plate is hinged with one of the cushion blocks, a threaded rod is in threaded connection with the center of the side wall of the cover plate, and the threaded rod is in threaded connection with the hopper. The lower end of the threaded rod penetrates through the cover plate and is provided with a square pipe through a fixing sleeve. A square tube is slidably connected to the outer wall of the square tube, the square tube is fixed to the outer wall of the square tube through a fixing part, the square tube slides on the square tube by pulling a limiting pin till the scraper makes contact with the inner wall of the hopper, and when the inner wall of the hopper needs to be cleaned, a rotating disc is driven to rotate, and the rotating disc drives a threaded rod to rotate; the threaded rod drives the square pipe to drive the scraper to rotate, the scraper can move up and down while rotating along with the square pipe and the threaded rod, and materials adhering to the inner wall of the hopper are scraped down.

Description

Technical Field

[0001] The utility model relates to the technical field of screw extruders, in particular to a feed hopper for a screw extruder. Background Art

[0002] Screw extruder is a material processing equipment that relies on the pressure and shear force generated by the rotation of the screw to fully plasticize and evenly mix the materials and form them through the die. Screw extruder is a material blending equipment. After the raw materials are fed into the extruder through the feeding device, they are fully mixed and extruded under the action of the screw to form a product.

[0003] When the material enters the extruder through the feed hopper, there is usually a lot of material stuck to the inner wall of the feed hopper. In the prior art, the material on the inner wall of the feed hopper is generally removed by manually scraping the material off the inner wall of the hopper, which not only increases the workload of the staff, but also makes the manual operation more complicated and the work efficiency is relatively low. Utility Model Content

[0004] The utility model aims to provide a feed hopper for a screw extruder to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solutions: a feed hopper for a screw extruder, comprising: a hopper cover plate, a plurality of pads are evenly fixedly installed on the upper end of the hopper, the cover plate is located at the upper end of the pads, and one end of the cover plate is hinged to one of the pads, a threaded rod is threadedly connected at the center of the side wall of the cover plate, and the lower end of the threaded rod passes through the cover plate and is installed with a square tube through a fixing sleeve;

[0006] The outer wall of the square tube is slidably connected with a square tube, which is fixed on the outer wall of the square tube through a fixing component, and the other end of the square tube is provided with a scraper through a connecting component, and one end of the scraper contacts the inner wall of the hopper.

[0007] Preferably, a threaded barrel is fixedly mounted at the center of the side wall of the cover plate, and the outer wall of the threaded rod and the inner wall of the threaded barrel are threadedly connected.

[0008] Preferably, the fixing sleeve is sleeved on the lower end of the threaded rod and fixedly connected by bolts, and two square tubes are symmetrically fixedly mounted on the outer wall of the fixing sleeve.

[0009] Preferably, the fixing component includes a rack, a limit pin and a tooth plate, the rack is fixedly mounted on the side wall of one end of the square tube, the limit pin is slidably inserted on the side wall of one end of the square tube, and one end of the limit pin passes through the side wall of the square tube and is fixedly connected to one end of the tooth plate.

[0010] Preferably, the outer wall of the limit pin is sleeved with a spring 1, one end of the spring 1 is fixedly connected to the other end of the limit pin, and the other end is fixedly connected to the outer wall of the square tube, and when the spring 1 is in a balanced state, the tooth plate and the rack are engaged with each other.

[0011] Preferably, the connecting component includes a fixed box, a movable seat and a second spring, one end of the movable seat is inserted and slidably inserted into the fixed box, one end of the second spring is fixedly mounted on the inner wall of the fixed box, and the other end is fixedly connected to the outer wall of the movable seat.

[0012] Preferably, one end of the scraper is inserted into the movable seat and fixed by bolts.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] By pulling the limit pin, the square tube can slide on the square tube until the scraper contacts the inner wall of the hopper. When the inner wall of the hopper needs to be cleaned, the rotating disk is driven to rotate, and the rotating disk drives the threaded rod to rotate. The threaded rod drives the square tube to rotate with the scraper. The scraper can move up and down while following the rotation of the square tube and the threaded rod to scrape off the adhered material on the inner wall of the hopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a front sectional view of the overall structure of the utility model;

[0017] Figure 3 It is a front cross-sectional schematic diagram of the square tube and square passage of the utility model;

[0018] Figure 4 It is a top view cross-sectional schematic diagram of some square tubes and square tubes of the utility model;

[0019] Figure 5 It is a schematic diagram of the structure of the mobile seat of the utility model.

[0020] In the figure: 1. hopper; 2. cushion block; 3. cover plate; 4. threaded tube; 5. threaded rod; 6. fixed sleeve; 7. square tube; 8. rack; 9. square tube; 10. limit pin; 11. tooth plate; 12. spring 1; 13. fixed box; 14. movable seat; 15. spring 2; 16. scraper. DETAILED DESCRIPTION

[0021] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 5 The utility model provides a technical solution: a feed hopper for a screw extruder, comprising: a hopper 1 cover plate 3, a plurality of pads 2 are evenly fixedly installed on the upper end of the hopper 1, the cover plate 3 is located at the upper end of the pads 2, and one end of the cover plate 3 is hinged to one of the pads 2, the cover plate 3 can be opened and closed, a threaded barrel 4 is fixedly installed at the center of the side wall of the cover plate 3, a threaded rod 5 is connected to the inner thread of the threaded barrel 4, the outer wall of the threaded rod 5 is threadedly connected to the inner wall of the threaded barrel 4, the lower end of the threaded rod 5 passes through the cover plate 3 and is installed with a square tube 7 through a fixing sleeve 6, the fixing sleeve 6 is sleeved on the lower end of the threaded rod 5 and fixedly connected by bolts, two square tubes 7 are symmetrically fixedly installed on the outer wall of the fixing sleeve 6, and a rotating disk is fixedly installed on the upper end of the threaded rod 5, which is convenient for rotating the threaded rod 5 through the rotating disk. When the threaded rod 5 rotates, it can move up and down in the threaded barrel 4, thereby moving synchronously with the square tube 7.

[0023] The outer wall of the square tube 7 is slidably connected with a square tube 9, which is fixed to the outer wall of the square tube 7 by a fixing component. The fixing component includes a rack 8, a limit pin 10 and a tooth plate 11. The rack 8 is fixedly installed on the side wall of one end of the square tube 7. A through hole is opened on the side wall of one end of the square tube 7. The through hole is located on one side of the rack 8. The limit pin 10 is slidably inserted into the through hole. One end of the limit pin 10 passes through the side wall of the square tube 9 and is fixedly connected to one end of the tooth plate 11. By pulling the limit pin 10, the tooth plate 11 can be driven to move on one side of the rack 8. The outer wall of the limit pin 10 is sleeved with Spring 12, one end of spring 12 is fixedly connected to the other end of limit pin 10, and the other end is fixedly connected to the outer wall of square tube 9. When spring 12 is in a balanced state, tooth plate 11 and rack 8 engage with each other, thereby fixing square tube 9. When square tube 9 needs to be moved, by pulling limit pin 10 outward, limit pin 10 moves outward with tooth plate 11 through stretching spring 12, thereby separating from rack 8, and square tube 9 can be moved, thereby moving scraper 16, so that scraper 16 can be suitable for hoppers 1 with different diameters.

[0024] A scraper 16 is installed at the other end of the square tube 9 through a connecting component. The connecting component includes a fixed box 13, a movable seat 14 and a spring 15. One end of the movable seat 14 is inserted and slidably inserted into the fixed box 13. One end of the spring 15 is fixedly installed on the inner wall of the fixed box 13, and the other end is fixedly connected to the outer wall of the movable seat 14. The movable seat 14 can move in the fixed box 13 by squeezing the spring 15. One end of the scraper 16 is inserted into the movable seat 14 and fixed by bolts. One end of the scraper 16 contacts the inner wall of the hopper 1. The scraper 16 can move up and down while following the square tube 7 and the threaded rod 5 to rotate, so as to scrape off the bonded material on the inner wall of the hopper 1.

[0025] In actual use, by pulling the limit pin 10, the square tube 9 is allowed to slide on the square tube 7 until the scraper 16 contacts the inner wall of the hopper 1. When the inner wall of the hopper 1 needs to be cleaned, the rotating disk is driven to rotate, and the rotating disk drives the threaded rod 5 to rotate. The threaded rod 5 drives the square tube 7 to rotate with the scraper 16. The scraper 16 can move up and down while following the rotation of the square tube 7 and the threaded rod 5 to scrape off the adhered material on the inner wall of the hopper 1.

[0026] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A feed hopper for a screw extruder, comprising: A hopper (1) cover plate (3), a plurality of cushion blocks (2) are evenly fixedly mounted on the upper end of the hopper (1), the cover plate (3) is located on the upper end of the cushion blocks (2), and one end of the cover plate (3) is hinged to one of the cushion blocks (2), characterized in that a threaded rod (5) is threadedly connected at the center of the side wall of the cover plate (3), the lower end of the threaded rod (5) passes through the cover plate (3) and is mounted with a square tube (7) through a fixing sleeve (6); The outer wall of the square tube (7) is slidably connected with a square tube (9), which is fixed to the outer wall of the square tube (7) through a fixing component. The other end of the square tube (9) is provided with a scraper (16) through a connecting component, and one end of the scraper (16) contacts the inner wall of the hopper (1).

2. A feed hopper for a screw extruder according to claim 1, characterized in that: A threaded barrel (4) is fixedly mounted at the center of the side wall of the cover plate (3), and the outer wall of the threaded rod (5) and the inner wall of the threaded barrel (4) are threadedly connected.

3. A feed hopper for a screw extruder according to claim 2, characterized in that: The fixing sleeve (6) is sleeved on the lower end of the threaded rod (5) and fixedly connected by bolts, and two square tubes (7) are symmetrically fixedly mounted on the outer wall of the fixing sleeve (6).

4. A feed hopper for a screw extruder according to claim 1, characterized in that: The fixing component comprises a rack (8), a limit pin (10) and a tooth plate (11); the rack (8) is fixedly mounted on a side wall at one end of the square tube (7); the limit pin (10) is slidably inserted into a side wall at one end of the square tube (9); one end of the limit pin (10) passes through the side wall of the square tube (9) and is fixedly connected to one end of the tooth plate (11).

5. A feed hopper for a screw extruder according to claim 4, characterized in that: The outer wall of the limit pin (10) is sleeved with a spring 1 (12), one end of the spring 1 (12) is fixedly connected to the other end of the limit pin (10), and the other end is fixedly connected to the outer wall of the square tube (9), and when the spring 1 (12) is in a balanced state, the tooth plate (11) and the rack (8) are engaged with each other.

6. A feed hopper for a screw extruder according to claim 1, characterized in that: The connecting component comprises a fixed box (13), a movable seat (14) and a second spring (15); one end of the movable seat (14) is inserted and slidably inserted into the fixed box (13); one end of the second spring (15) is fixedly mounted on the inner wall of the fixed box (13), and the other end is fixedly connected to the outer wall of the movable seat (14).

7. A feed hopper for a screw extruder according to claim 6, characterized in that: One end of the scraper (16) is inserted into the movable seat (14) and fixed by bolts.

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