Horizontal rotary granulator

Abstract

The utility model relates to the field of granulators, in particular to a horizontal rotary granulator. The granulating machine comprises a feeding screw cylinder, a granulating cylinder and an extrusion speed reducer which are connected in sequence, the extrusion speed reducer is arranged on the shell; a feeding screw rod which is driven by a feeding speed reducing motor to rotate is arranged in the feeding screw cylinder, and a feeding hopper opposite to the feeding screw rod is arranged on the feeding screw cylinder; an annular granulating net communicated with the feeding screw cylinder is arranged in the granulating cylinder; a granulating screw rod which is driven by an extrusion speed reducer to rotate is arranged in the granulating net; the granulating cylinder is also provided with a refrigerating part and a discharge hole; the extrusion speed reducer is driven by an extrusion motor; and the extrusion motor is arranged on the shell. The granulating part is free of a bearing structure, and the shaft is thick and large and is durable. And by adopting spiral material pushing, the granulating pressure is adjustable, and different materials with different viscosities can be granulated. A power shaft for granulating is separated from a power shaft for feeding, so that the material conveying pressure is reduced, and the problem that granulating is not easy to form due to different materials is solved.

Description

Technical Field

[0001] This utility model relates to the field of granulators, and more particularly to a horizontal rotary granulator. Background Technology

[0002] A horizontal rotary granulator is a type of granulation equipment commonly used in the pharmaceutical, food, and chemical industries. It is mainly used to process powdered raw materials into uniform granules through processes such as rotation, extrusion, and cutting.

[0003] Currently, horizontal rotary pellet mills suffer from several key technical defects during operation, severely impacting equipment stability and lifespan. Firstly, the design of the power shaft connected to the feeding device is flawed; its diameter is excessively small, and it utilizes small bearings, resulting in insufficient overall structural strength. Due to the significant material compression and rotational shear forces during pelleting, the power bearings are subjected to extremely high loads, making them highly susceptible to breakage. Furthermore, the bearings, subjected to prolonged high pressure and lacking effective sealing, allow material to easily enter, causing lubrication failure, accelerated wear, and ultimately frequent bearing failure. Secondly, the power shaft of the rotary pelletizing blade also employs a bearing-supported structure, facing the same problem of material intrusion. The bearings wear rapidly in contaminated environments, further reducing equipment reliability. These issues directly contribute to the high failure rate of horizontal rotary pellet mills, requiring frequent downtime for maintenance, severely impacting production schedules and increasing maintenance costs. Moreover, due to repeated damage to core components (such as bearings and power shafts) and the difficulty in fully restoring performance after repair, the overall lifespan of the equipment is significantly shortened. Typically, after frequent maintenance, it can only maintain a service life of six months to one year, ultimately leading to scrapping due to the failure of critical components. These defects not only increase the cost of equipment replacement for enterprises, but also reduce production efficiency, and urgently need to be addressed through structural optimization and material improvement. Utility Model Content

[0004] To address the problems existing in the background technology, a horizontal rotary granulator is proposed. The granulation section has no bearing structure, a large shaft, and is durable. The use of a screw feeder allows for adjustable granulation pressure, enabling the granulation of different materials with varying viscosities. The separation of the granulation drive shaft and the feeding drive shaft reduces the pressure on the conveying material, thereby solving the problem of difficulty in granulation due to different materials.

[0005] This utility model proposes a horizontal rotary granulator, comprising a feeding screw barrel, a granulation cylinder, and an extrusion reducer connected in sequence; the extrusion reducer is mounted on the machine housing; the feeding screw barrel contains a feeding screw driven to rotate by a feeding reducer motor, and a feeding hopper opposite to the feeding screw is mounted on the feeding screw barrel; an annular granulation screen connected to the feeding screw barrel is mounted inside the granulation cylinder; a granulation screw driven to rotate by the extrusion reducer is mounted inside the granulation screen; a cooling element and a discharge port are also mounted on the granulation cylinder; the extrusion reducer is driven by the extrusion motor; the extrusion motor is mounted on the machine housing.

[0006] Preferably, a frame is provided at the lower end of the casing; the extrusion motor is mounted on the frame and drives the extrusion reducer at the upper end of the casing through a transmission belt connected to a transmission wheel.

[0007] Preferably, the drive end of the extrusion reducer is connected to the pelletizing screw via a keyway and a key.

[0008] Preferably, a flange one is provided on the outer periphery of the drive end of the extrusion reducer; the granulation screen is installed on the inner ring of flange one by screws; flange two is provided on both sides of the granulation cylinder, and flange two on one side is installed on the outer ring of flange one by screws.

[0009] Preferably, flange four is provided on both sides of the feed screw barrel; flange three is provided on the feed geared motor; flange three is fixedly installed to flange four on one side by screws.

[0010] Preferably, flange four on the other side and flange two on the corresponding side are fixedly installed with screws.

[0011] Preferably, the refrigeration component is disposed between the two sets of flanges.

[0012] Preferably, the refrigeration component includes a water circulation channel disposed on the granulation cylinder; an inlet pipe connected to the water circulation channel is disposed on one set of flanges 2, and an outlet pipe connected to the water circulation channel is disposed on another set of flanges 2.

[0013] Compared with existing technologies, this utility model has the following beneficial technical effects: The granulation section of this utility model has no bearing structure, a large and durable shaft, effectively avoiding damage caused by bearing feeding. The use of a spiral feeder allows for adjustable granulation pressure, enabling granulation of different materials with varying viscosities. The separation of the granulation drive shaft and the feeding drive shaft reduces the pressure on the conveying material, thus solving the problem of difficulty in granulation due to different materials. Furthermore, the cooling system uses water-cooled circulating water. Since flanges are installed on both sides of the granulation cylinder, and a granulation screen is placed inside between the flanges, the heat generated by the friction between the granulation screen and the material during granulation is transferred to the flanges and the granulation cylinder. Therefore, the water-cooled circulation provides excellent cooling, further improving the granulation effect. Through the above structural improvements, the equipment achieves durability and increased production capacity, with a capacity increase of 30%-50%. Attached Figure Description

[0014] Figure 1 This is a structural diagram of a horizontal rotary granulator;

[0015] Figure 2 This is an exploded view of a horizontal rotary granulator.

[0016] Reference numerals in the attached drawings: 1. Feeding geared motor; 2. Feeding screw; 3. Feeding barrel; 4. Feeding hopper; 5. Granulation cylinder; 6. Granulation screen; 7. Refrigeration component; 8. Granulation screw; 9. Flange 1; 10. Extrusion reducer; 11. Housing; 12. Drive wheel; 13. Extrusion motor; 14. Drive belt; 15. Frame. Detailed Implementation

[0017] This utility model proposes a horizontal rotary granulator, including a feeding screw barrel 3, a granulation cylinder 5, and an extrusion reducer 10 connected in sequence; the extrusion reducer 10 is mounted on a housing 11; the feeding screw barrel 3 is equipped with a feeding screw 2 driven to rotate by a feeding reducer motor 1, and a feeding hopper 4 is mounted on the feeding screw barrel 3 opposite to the feeding screw 2; the granulation cylinder 5 is equipped with an annular granulation mesh 6 connected to the feeding screw barrel 3; a granulation screw 8 driven to rotate by the extrusion reducer 10 is mounted inside the granulation mesh 6; the granulation cylinder 5 is also equipped with a cooling element 7 and a discharge port; the extrusion reducer 10 is driven by an extrusion motor 13; the extrusion motor 13 is mounted on the housing 11.

[0018] It should be further explained that a frame 15 is provided at the lower end of the housing 11; the extrusion motor 13 is provided on the frame 15 and drives the extrusion reducer 10 at the upper end of the housing 11 through the transmission wheel 12 connected to the transmission belt 14.

[0019] It should be further explained that the drive end of the extrusion reducer 10 is connected to the pelletizing screw 8 through a keyway and a key.

[0020] It should be further explained that a flange 9 is provided on the outer periphery of the drive end of the extrusion reducer 10; the granulation screen 6 is installed on the inner ring of the flange 9 by screws; flanges 2 are provided on both sides of the granulation cylinder 5, and flange 2 on one side is installed on the outer ring of the flange 9 by screws.

[0021] It should be further explained that flange four is provided on both sides of the feed screw barrel 3; flange three is provided on the feed reduction motor 1; flange three and flange four on one side are fixedly installed by screws.

[0022] It should be further noted that flange four on the other side and flange two on the corresponding side are fixed in place by screws.

[0023] It should be further noted that the refrigeration component 7 is located between the two sets of flanges 2.

[0024] It should be further explained that the refrigeration component 7 includes a water circulation channel provided on the granulation cylinder 5; a water inlet pipe connected to the water circulation channel is provided on one set of flanges 2, and a water outlet pipe connected to the water circulation channel is provided on another set of flanges 2.

[0025] This utility model features a bearingless granulation section with a robust and durable shaft, effectively avoiding damage caused by bearing-driven feeding. The use of a spiral feeder allows for adjustable granulation pressure, enabling the granulation of different materials with varying viscosities. The separation of the granulation drive shaft and the feeding drive shaft reduces material conveying pressure, thus resolving the issue of inconsistent granulation due to varying material properties. Furthermore, the cooling component 7 utilizes water-cooled circulating water. Since flanges 2 are installed on both sides of the granulation cylinder 5, and a granulation mesh 6 is placed between the flanges, the heat generated by the friction between the granulation mesh 6 and the material during granulation is transferred to the flanges 2 and the granulation cylinder 5. Therefore, the water-cooled circulation provides excellent cooling, further improving the granulation effect. Through these structural improvements, the equipment achieves increased durability and production capacity, with a capacity increase of 30%-50%.

[0026] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A horizontal rotary granulator, characterized in that, It includes a feed screw (3), a pelletizing cylinder (5) and an extrusion reducer (10) connected in sequence; the extrusion reducer (10) is mounted on the housing (11); The feed screw barrel (3) is equipped with a feed screw (2) that is driven to rotate by a feed reduction motor (1), and the feed hopper (4) is provided on the feed screw barrel (3) opposite to the feed screw (2); The pelletizing cylinder (5) is equipped with an annular pelletizing screen (6) that connects to the feed screw cylinder (3); the pelletizing screen (6) is equipped with a pelletizing screw (8) that is driven to rotate by an extrusion reducer (10); the pelletizing cylinder (5) is also equipped with a cooling component (7) and a discharge port; The extrusion reducer (10) is driven by the extrusion motor (13); the extrusion motor (13) is mounted on the housing (11).

2. The horizontal rotary granulator according to claim 1, characterized in that, A frame (15) is installed at the lower end of the housing (11); the extrusion motor (13) is installed on the frame (15) and drives the extrusion reducer (10) at the upper end of the housing (11) through the transmission wheel (12) connected to the transmission belt (14).

3. The horizontal rotary granulator according to claim 1, characterized in that, The drive end of the extrusion reducer (10) is connected to the pelletizing screw (8) through a keyway and key.

4. The horizontal rotary granulator according to claim 1, characterized in that, A flange 1 (9) is provided on the outer periphery of the drive end of the extrusion reducer (10); the granulation screen (6) is installed on the inner ring of the flange 1 (9) by screws; flange 2 is provided on both sides of the granulation cylinder (5), and flange 2 on one side is installed on the outer ring of the flange 1 (9) by screws.

5. The horizontal rotary granulator according to claim 4, characterized in that, Flange 4 is provided on both sides of the feed screw barrel (3); Flange 3 is provided on the feed gear motor (1); Flange 3 and Flange 4 on one side are fixedly installed by screws.

6. The horizontal rotary granulator according to claim 5, characterized in that, Flange 4 on the other side and flange 2 on the corresponding side are fixed in place with screws.

7. The horizontal rotary granulator according to claim 4, characterized in that, The refrigeration component (7) is located between the two sets of flanges.

8. The horizontal rotary granulator according to claim 7, characterized in that, The refrigeration component (7) includes a water circulation channel provided on the granulation cylinder (5); a water inlet pipe connected to the water circulation channel is provided on one set of flanges 2, and a water outlet pipe connected to the water circulation channel is provided on another set of flanges 2.

Images