Discharge structure and twin-screw extruder

Abstract

The utility model relates to the technical field of plastics processing, concretely to a discharge structure and double screw extruder, include: screen cloth, screen cloth sets up inside the discharge tank, scraper lever, scraper lever is fixed on the inner wall of discharge tank, and with the surface of screen cloth is connected in sliding, the bottom of discharge tank is provided with driving motor, and the end of driving motor is provided with driving gear, and the end of driving gear is provided with rotating head, and driven gear, driven gear engages with driving gear, and the end of driven gear is provided with transmission belt, and the other end of transmission belt is provided with vibrating wheel, beneficial effect is: the rotating head drives rotating groove and screen cloth to rotate, the scraper lever can scrape the surface of screen cloth big particle down and makes big particle through the waste material mouth and exports, and the screen cloth is dredged.

Description

Technical Field

[0001] This utility model relates to the field of plastics processing, specifically to a discharge structure and a twin-screw extruder. Background Technology

[0002] Plastic granules are semi-finished products in the plastic molding and processing industry. They can be further processed into plastic products such as plastic bags. Plastic powder is mixed with various powder materials and then melted by heating to fully integrate the raw materials. The molten material is then extruded into granules using an extruder. After the granules cool, the desired plastic granules are formed.

[0003] Existing extruders are equipped with screening devices at the discharge port to screen particles that meet the size requirements. However, due to the different sizes of the produced particles, some large particles will block the screen holes during screening, affecting the operation. At this time, manual cleaning of the screen is required, which increases working time and reduces work efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a discharge structure and a twin-screw extruder to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a discharge structure and a twin-screw extruder, wherein the discharge structure and the twin-screw extruder include:

[0006] A screen is installed inside the discharge box.

[0007] A scraper is fixed to the inner wall of the discharge box and slidably connected to the surface of the screen. A drive motor is installed at the bottom of the discharge box, and a drive gear is installed at the end of the drive motor. A rotating head is installed at the end of the drive gear.

[0008] Driven gear meshes with driving gear. Driven gear has a drive belt at one end and a vibrating wheel at the other end.

[0009] Preferably, the end of the discharge box is provided with an opening, which is connected to the discharge port of the extruder, and the rotating head can extend into the rotating groove.

[0010] Preferably, the side of the discharge box is provided with a waste outlet, the surface of the waste outlet is provided with a scraper, and the outside of the waste outlet is provided with a baffle.

[0011] Preferably, the end of the baffle is provided with a push-pull plate, the push-pull plate is provided with a discharge port, and a discharge pipe is fixed on the surface of the discharge port.

[0012] Preferably, the surface of the drive gear is provided with a gear carrier, and there are two sets of gear carriers, which are respectively arranged on both sides of the drive gear.

[0013] Preferably, the end of the gear frame is connected to the adjusting gear via a rack, the adjusting gear is fixed to the strip plate via a rotating shaft, and the other side of the adjusting gear is connected to the surface of the push-pull plate via a rack and a connecting rod.

[0014] A twin-screw extruder includes the above-described discharge structure.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention proposes a method where the extruded granules are conveyed through an opening to the surface of a screen inside the discharge box. Pushing the push-pull plate to the top engages the drive gear and driven gear, activating the drive motor. The drive motor rotates the drive gear, which in turn rotates the driven gear. The driven gear, via a transmission belt, drives a vibrating wheel. Because the teeth on the vibrating wheel are longer than the distance between the vibrating wheel and the screen surface, the vibrating wheel continuously lifts the screen, causing it to vibrate. The screen vibrates and separates the granules on its surface. Qualified granules pass through the screen holes into the screen's interior and then through the discharge hole into the discharge pipe. The discharge pipe transports the granules to the discharge outlet for easy collection. When large granules clog the screen holes, the drive motor is turned off, and the push-pull plate is pushed down. The adjusting gear, via the gear frame, moves the drive gear upwards. The drive gear, through a component, moves the rotating head into the rotating groove. Activating the drive motor rotates the rotating head, which in turn rotates the rotating groove and the screen. At this point, the scraper removes large granules from the screen surface and discharges them through the waste outlet, thus clearing the screen. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic cross-sectional view of the present invention.

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of this utility model from other perspectives.

[0020] In the diagram: 1. Screen 2. Discharge box 3. Scraper 4. Baffle 5. Discharge port 6. Waste port 7. Discharge hole 8. Rotating head 9. Adjusting gear 10. Vibrating wheel 11. Transmission belt 12. Driving gear 13. Driven gear 14. Drive motor 15. Rotating groove 16. Gear frame 17. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Example

[0022] Please see Figures 1-3 This utility model provides a technical solution: a discharge structure and a twin-screw extruder. The discharge structure and twin-screw extruder include: a screen 1, which is disposed inside a discharge box 2; a scraper 3, which is fixed to the inner wall of the discharge box 2 and slidably connected to the surface of the screen 1; a drive motor 15 is disposed at the bottom of the discharge box 2, a drive gear 13 is disposed at the end of the drive motor 15, and a rotating head 9 is disposed at the end of the drive gear 13; and a driven gear 14, which meshes with the drive gear 13. A transmission belt 12 is disposed at the end of the driven gear 14, and a vibrating wheel 11 is disposed at the other end of the transmission belt 12. When it is necessary to screen particles of different sizes, the screen 1 can be directly replaced with different aperture sizes, saving operation time. Example

[0023] Based on Embodiment 1, the end of the discharge box 2 is provided with an opening, which is connected to the discharge port of the extruder. The rotating head 9 can extend into the rotating groove 16. The side of the discharge box 2 is provided with a waste port 7. The surface of the waste port 7 is provided with a scraper 3. The outside of the waste port 7 is provided with a baffle 4. Pushing the push-pull plate downward, at this time the adjusting gear 10 moves the driving gear 13 upward through the gear frame 17. The driving gear 13 moves the rotating head 9 into the rotating groove 16 through the component. The drive motor 15 is turned on to drive the rotating head 9 to rotate. The rotating head 9 drives the rotating groove 16 and the screen 1 to rotate. At this time, the scraper 3 can scrape off the large particles on the surface of the screen 1 and discharge the large particles through the waste port 7 to clear the screen. Example

[0024] Based on Embodiment 2, a push-pull plate is provided at the end of the baffle 4, and a discharge port 5 is provided on the push-pull plate. A discharge pipe 6 is fixed on the surface of the discharge port 5. A gear frame 17 is provided on the surface of the drive gear 13. There are two sets of gear frames 17, which are respectively provided on both sides of the drive gear 13. The end of the gear frame 17 is connected to the adjusting gear 10 through a rack. The adjusting gear 10 is fixed on the strip plate through a rotating shaft. The other side of the adjusting gear 10 is connected to the surface of the push-pull plate through a rack and a connecting rod. When it is necessary to screen particles of different sizes, the screen 1 can be directly replaced with different aperture sizes, saving operation time.

[0025] In actual use, the extruded granules are conveyed through the opening to the surface of the screen 1 inside the discharge box 2. The push-pull plate is pushed to the top, at which point the drive gear 13 and driven gear 14 mesh. The drive motor 15 is turned on, and the drive motor 15 drives the drive gear 13 to rotate. The drive gear 13 drives the driven gear 14 to rotate, and the driven gear 14 drives the vibrating wheel 11 to rotate via the transmission belt 12. Because the length of the teeth on the surface of the vibrating wheel 11 is greater than the distance between the vibrating wheel 11 and the surface of the screen 1, the vibrating wheel 11 continuously lifts the screen 1 as it rotates, causing the screen 1 to vibrate. The screen 1 uses this vibration to screen the granules on its surface. Granules of the correct size pass through the screen holes and enter the interior of the screen 1. The particles then enter the discharge pipe 6 through the discharge hole 8. The discharge pipe 6 transports the particles to the discharge port 5 for easy collection. When large particles clog the screen holes, the drive motor 15 is turned off, and the push-pull plate is pushed down. At this time, the adjusting gear 10 moves the drive gear 13 upward through the gear frame 17. The drive gear 13 moves the rotating head 9 into the rotating groove 16 through the component. The drive motor 15 is turned on to drive the rotating head 9 to rotate. The rotating head 9 drives the rotating groove 16 and the screen 1 to rotate. At this time, the scraper 3 can scrape off the large particles on the surface of the screen 1 and discharge them through the waste port 7, thus clearing the screen 1. When it is necessary to screen particles of different sizes, the screen 1 can be directly replaced with different aperture sizes, saving operation time.

[0026] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A discharge structure and a twin-screw extruder, characterized in that: The discharge structure and twin-screw extruder include: Screen (1), screen (1) is set inside the discharge box (2); The scraper (3) is fixed to the inner wall of the discharge box (2) and is slidably connected to the surface of the screen (1). A drive motor (15) is provided at the bottom of the discharge box (2). A drive gear (13) is provided at the end of the drive motor (15). A rotating head (9) is provided at the end of the drive gear (13). Driven gear (14) meshes with driving gear (13). A drive belt (12) is provided at the end of the driven gear (14), and a vibrating wheel (11) is provided at the other end of the drive belt (12).

2. The discharge structure and twin-screw extruder according to claim 1, characterized in that: The end of the discharge box (2) is provided with an opening, which is connected to the discharge port of the extruder, and the rotating head (9) can extend into the rotating groove (16).

3. The discharge structure and twin-screw extruder according to claim 2, characterized in that: The discharge box (2) has a waste outlet (7) on its side, a scraper (3) on its surface, and a baffle (4) on its exterior.

4. The discharge structure and twin-screw extruder according to claim 3, characterized in that: The end of the baffle (4) is provided with a push-pull plate, and the push-pull plate is provided with a discharge port (5). The surface of the discharge port (5) is fixed with a discharge pipe (6).

5. The discharge structure and twin-screw extruder according to claim 4, characterized in that: The surface of the drive gear (13) is provided with a gear frame (17), and there are two sets of gear frames (17), which are respectively arranged on both sides of the drive gear (13).

6. The discharge structure and twin-screw extruder according to claim 5, characterized in that: The end of the gear frame (17) is connected to the adjusting gear (10) via a rack. The adjusting gear (10) is fixed to the strip plate via a rotating shaft. The other side of the adjusting gear (10) is connected to the surface of the push-pull plate via a rack and a connecting rod.

7. A twin-screw extruder, characterized in that: The discharge structure includes any one of claims 1-6.

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