A twin-screw feeding device of a dry granulator

Abstract

The utility model discloses a double screw feeding device of dry granulator, its characterized in that: including the first screw and second screw of cooperation setting in the material cylinder, drive assembly can drive first, second screw rotation, the rotation direction of first screw and second screw is opposite, the spiral direction of first screw and second screw is opposite, the inner side wall of material cylinder is provided with the flow guide groove of alignment its opening. The utility model discloses simple structure, reasonable in design can ensure that the material of poor flowability or slippery can smoothly, stably push out from the material port, guarantee the feeding quality.

Description

Technical Field

[0001] This utility model relates to granulation equipment, specifically to a twin-screw feeding device for a dry granulator. Background Technology

[0002] Granulators are widely used equipment in the pharmaceutical, chemical, and food industries. The feeding device is a crucial component of a granulator. Traditional feeding devices mainly consist of a barrel containing a screw. By controlling the screw's rotation, the material inside the barrel flows and is ejected from the outlet. The drawback of this structure is that the single-screw design has poor feeding efficiency. When feeding materials with poor flowability or particularly slippery materials, the material struggles to exit the barrel smoothly, resulting in poor feeding quality and failing to meet user requirements. Utility Model Content

[0003] In view of the deficiencies in the prior art, the technical problem to be solved by this utility model is to provide a twin-screw feeding device for a dry pellet mill to solve the above-mentioned problems.

[0004] Therefore, this utility model is implemented using the following solution: A twin-screw feeding device for a dry granulation machine is characterized in that it includes a first screw and a second screw arranged in a barrel, a drive assembly that can drive the first and second screws to rotate, the first and second screws rotating in opposite directions, the first and second screws having opposite helical directions, and the inner sidewall of the barrel being provided with a guide groove aligned with its opening.

[0005] The drive assembly includes a drive motor, the output end of which is connected to a first screw. A first gear is connected to the first screw, and a second gear that meshes with the first gear is connected to the second screw.

[0006] Both the first screw and the second screw are connected to positioning rings, and positioning bearings are provided at the front and rear ends of the positioning rings.

[0007] The feed cylinder includes an assemblable upper feed cylinder section and a lower feed cylinder section.

[0008] The material cylinder is clamped to the box body via a dovetail groove structure, and a sealing ring is provided between the material cylinder and the box body.

[0009] The aforementioned technical solution provides a twin-screw feeding device for a dry granulator. This device employs a cooperative twin-screw structure for feeding, with the spiral directions and rotation directions of the two screws reversed. This significantly improves the screw's feeding efficiency. Furthermore, a guide groove is provided on the inner wall of the barrel to guide the material flow, ensuring that materials with poor flowability or those that are particularly slippery can be smoothly ejected from the barrel. This ensures feeding quality and efficiency, better meeting the user's needs. Attached Figure Description

[0010] The present invention includes the following figures: Figure 1 This is a cross-sectional view of the present invention; Figure 2 for Figure 1 A magnified view of the area pointed to by A in the middle. Detailed Implementation

[0011] As shown in the figure, the present invention discloses a twin-screw feeding device for a dry granulator, including a first screw 6 and a second screw 5 arranged in a barrel. A drive assembly can drive the first and second screws to rotate. The rotation directions of the first screw 6 and the second screw 5 are opposite, and the spiral directions of the first screw 6 and the second screw 5 are opposite. A guide groove aligned with its opening is provided on the inner side wall of the barrel.

[0012] Furthermore, the drive assembly includes a drive motor 1, the output end of which is connected to a first rotating shaft 13 extending from one end of the first screw 6. A first gear 12 is connected to the first screw 6, and a second gear 8 meshing with the first gear 12 is connected to a second rotating shaft 14 extending from one end of the second screw 5. With the above structure, the drive motor 1 drives the first screw 6 to rotate, and through the gear transmission structure, drives the second screw 5 to rotate synchronously, achieving opposite rotation directions for the first and second screws.

[0013] Furthermore, both the first screw 6 and the second screw 5 are connected to positioning rings 10, and positioning bearings 11 are provided at the front and rear ends of the positioning rings 10. In this embodiment, the positioning bearings 11 are planar thrust bearings, and the positioning rings 10 are V-shaped. By adopting the above structure, the axial positioning of the first and second screws can be achieved by using the positioning rings 10 and the positioning bearings 11, ensuring the axial stability of the first and second screws during rotation.

[0014] Furthermore, the material cylinder includes an assemblable upper material cylinder section 4 and a lower material cylinder section 7. The split material cylinder structure facilitates the disassembly and cleaning of the material cylinder, and also facilitates the processing of the guide grooves on the inner wall of the material cylinder.

[0015] Furthermore, the barrel is secured to the housing 2 via a dovetail groove structure, and a sealing ring 3 is provided between the barrel and the housing 2. This structure ensures the stability of the connection between the barrel and the housing 2, while the sealing ring 3 ensures a tight seal between them.

[0016] The working principle of this utility model is as follows: the drive motor 1 drives the first screw 6 to rotate, and the second screw 5 is also rotated through the gear set. The rotation directions of the first and second screws are opposite. The first and second screws cooperate to push the material in the barrel towards the opening. At the same time, the guide groove in the barrel also guides the material to be pushed, so that the material can be pushed stably and reliably to the opening end of the barrel for delivery.

[0017] This invention employs a twin-screw structure for feeding, with the two screws rotating in opposite directions to greatly improve their feeding efficiency. Furthermore, a guide groove is provided on the inner wall of the barrel to guide the material flow, ensuring that materials with poor flowability or those that are particularly slippery can be smoothly ejected from the barrel, thus guaranteeing feeding quality and efficiency and better meeting user needs.

Claims

1. A twin-screw feeding device for a dry granulation mill, characterized in that: The material includes a first screw (6) and a second screw (5) arranged in the barrel. The drive assembly can drive the first and second screws to rotate. The rotation directions of the first screw (6) and the second screw (5) are opposite, and the helical directions of the first screw (6) and the second screw (5) are opposite. The inner sidewall of the barrel is provided with a guide groove aligned with its opening.

2. The twin-screw feeding device for a dry granulator according to claim 1, characterized in that: The drive assembly includes a drive motor (1), the output end of which is connected to a first screw (6), a first gear (12) is connected to the first screw (6), and a second gear (8) that meshes with the first gear (12) is connected to the second screw (5).

3. The twin-screw feeding device for a dry pellet mill according to claim 1, characterized in that: The first screw (6) and the second screw (5) are both connected to a positioning ring (10), and positioning bearings (11) are provided at the front and rear ends of the positioning ring (10).

4. The twin-screw feeding device for a dry granulator according to claim 1, characterized in that: The material cylinder includes an assemblable upper material cylinder section (4) and a lower material cylinder section (7).

5. The twin-screw feeding device for a dry granulator according to claim 1, characterized in that: The material cylinder is clamped to the box body (2) through a dovetail groove structure, and a sealing ring (3) is provided between the material cylinder and the box body (2).

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