Automatic cleaning device for dry granulator

By introducing an automatic cleaning device with a movable plate and multi-angle nozzles into the dry granulator, the problems of limited cleaning range and low cleaning efficiency have been solved, achieving full-coverage cleaning of key components and improving production efficiency and equipment hygiene.

CN224673333UActive Publication Date: 2026-08-25NANJING LINGHANG PHARMACEUTICAL MACHINERY CO LTD
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Patent Information

Application Number
CN202522511993.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-11-26
Publication Date
2026-08-25
Estimated Expiration
2035-11-26

AI Technical Summary

Technical Problem

Existing cleaning devices for dry pellet mills suffer from problems such as limited cleaning range, non-adjustable cleaning angle, low cleaning efficiency, complex operation, and numerous cleaning dead zones, especially in terms of poor cleaning effect on components such as auger conveyors and cutters.

Method used

An automatic cleaning device was designed, comprising a movable plate, multi-angle nozzles, and a servo motor drive. Through the detachable structure of the movable plate and the adjustable angle of the nozzles, a comprehensive cleaning of the auger conveyor, double rollers, cutter, and crushing rollers can be achieved. The servo motor drives the outer sleeve to rotate and adjust the spray angle, and the water flow from the nozzles drives the cutter to rotate for all-round cleaning.

Benefits of technology

It significantly improves cleaning efficiency and effectiveness, simplifies the operation process, reduces maintenance costs and the risk of cross-contamination, and protects the safety of operators.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to frequency converter heat dissipation technical field especially is related to an automatic cleaning device for dry granulator, including feed hopper, auger feeder, double roller pulley, cutter, broken roll, first cleaning head, second cleaning head, protective cover, water inlet main and servo motor. Auger feeder passes through the snap groove movable installation movable plate, removes after can clean inside, the spray head of second cleaning head is misaligned and is driven rotation through servo motor, adjusts the spray washing angle, and the water flow promotes the rotation of cutter to realize all -round cleaning. The present application can improve cleaning efficiency and cleaning degree significantly, simplify operation process, avoid cleaning dead angle, ensure that equipment is clean in an all -round way and promotes security.
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Description

Technical Field

[0001] This utility model relates to the field of energy storage enclosure technology, and more specifically, to an automatic cleaning device for a dry granulation machine. Background Technology

[0002] Dry granulation machines are widely used in the pharmaceutical, food, and chemical industries. Their main function is to granulate powdered materials through processes such as extrusion, cutting, and crushing to meet subsequent processing or usage requirements. However, in actual production, the cleaning of this equipment has always been a significant factor affecting production efficiency and product quality.

[0003] While some automatic cleaning devices exist in the current technology, these devices generally suffer from limited cleaning range, non-adjustable cleaning angles, and low cleaning efficiency. For example, most existing cleaning nozzles are fixed in design, unable to flexibly adjust the spray angle according to changes in the internal structure of the equipment, making it difficult to effectively clean certain complex parts. Furthermore, the cleaning structure design of some equipment is not reasonable enough; for instance, cleaning the inside of an auger conveyor requires disassembling a large number of parts, increasing operational difficulty and maintenance costs. At the same time, existing cleaning devices are ineffective at cleaning rotating parts such as cutters. Since sticky materials often adhere to the cutter surface, static spraying alone is insufficient for thorough cleaning, thus affecting the overall hygiene and operational stability of the equipment.

[0004] Therefore, there is an urgent need for an automated cleaning device capable of efficiently and comprehensively cleaning the internal structure of dry pellet mills to solve the problems of numerous cleaning dead zones, complex operation, and low cleaning efficiency in existing technologies. This device should feature flexible adjustment of the spray angle, coverage of key component cleaning needs, and reduced manual intervention, thereby significantly improving the cleaning effect and production efficiency of the equipment, while reducing maintenance costs and the risk of cross-contamination. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic cleaning device for a dry granulation machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides an automatic cleaning device for a dry granulation machine, including a feed hopper, an auger conveyor, a double roller mill, a cutter, a crushing roller, a first cleaning head, a second cleaning head, a protective cover, a main water inlet pipe, a servo motor, and a transmission mechanism. The feed hopper is located at the top of the granulator and is used to feed raw materials into the auger conveyor. The auger conveyor is located below the feed hopper and runs through the entire granulator, conveying the raw materials to the double roller mill via spiral blades. A movable plate is movably mounted on the auger conveyor via a slot; removing the movable plate allows for cleaning of the interior of the auger conveyor. The double roller mill is located at the output end of the auger conveyor and is used to compress the raw materials into flakes. The cutter is located after the double roller mill and is used to cut the flake raw materials into strips. The crushing roller is located after the cutter and is used to crush the strip raw materials into granular medicine.

[0007] Furthermore, the first cleaning head is located near the auger conveyor, and cleans the inside of the auger conveyor when the movable plate is removed; the second cleaning head includes an inlet water pipe and an outer sleeve, the inlet water pipe is connected to the main water inlet pipe, and the outer sleeve is fitted over the inlet water pipe and communicates with it; the surface of the outer sleeve is provided with multiple nozzles, which are staggered to form an angle to meet the cleaning needs of different parts; the second cleaning head is driven by a servo motor to rotate the transmission shaft, and the driving gear on the transmission shaft meshes with the driven gear on the outer sleeve, causing the outer sleeve to rotate around the inlet water pipe, thereby adjusting the spray angle of the nozzles.

[0008] Specifically, the protective cover is installed on the front of the granulator to protect the operator's safety and prevent material from splashing; the main water inlet pipe has two branches, one of which connects to the first cleaning head and the other to the second cleaning head, providing water to the cleaning heads; the servo motor is installed on the back of the granulator and is connected to the drive gear through a transmission shaft; the drive gear meshes with the driven gear on the outer sleeve to realize the rotational movement of the outer sleeve.

[0009] Compared with the prior art, the technical effects of this utility model are as follows: The movable plate structure and adjustable nozzle angle design significantly improve cleaning efficiency; the multi-angle spraying of the nozzles and the water flow driving the cutter rotation design ensure comprehensive cleaning of all parts of the equipment; the detachable design of the movable plate and the automatic nozzle angle adjustment function simplify the cleaning operation process; the protective cover design effectively protects the safety of operators and prevents material splashing. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the transmission structure of the second cleaning head of the present invention.

[0011] The attached figures are labeled as follows: 1. Feed hopper; 2. Screw conveyor; 3. Movable plate; 4. Double roller; 5. Cutter; 6. Crushing roller; 7. First cleaning head; 8. Second cleaning head; 9. Protective cover; 10. Main water inlet pipe; 11. Servo motor; 12. Drive shaft; 13. Drive gear; 14. Driven gear; 15. Outer sleeve; 16. Water inlet pipe; 17. Nozzle. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0013] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” and “described” used herein may also include the plural forms. It should be further understood that the word “comprising” as used in this specification means the presence of the described features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0014] This utility model provides an automatic cleaning device for a dry granulation machine, the overall structure of which is as follows: Figure 1-2 As shown. In this embodiment, it includes a feed hopper 1, an auger conveyor 2, a double roller chuck 4, a cutter 5, a crushing roller 6, a first cleaning head 7, a second cleaning head 8, a protective cover 9, a main water inlet pipe 10, a servo motor 11, and a transmission mechanism. Each component achieves the goal of efficient cleaning through structural design and functional integration. The feed hopper 1 is located at the top of the pellet mill and is used to feed raw materials into the auger conveyor 2. The auger conveyor 2 is located below the feed hopper 1 and runs through the entire pellet mill, conveying the raw materials to the double roller chuck 4 via spiral blades. A movable plate 3 is movably installed on the auger conveyor 2 via a slot. The design of the movable plate 3 allows for easy removal during the cleaning process, thereby enabling a thorough cleaning of the interior of the auger conveyor 2. The output end of the auger conveyor 2 is equipped with a double roller 4. The double roller 4 is used to compress the raw material into flakes. Then the flake raw material enters the area of ​​the cutter 5, where it is cut into strips. Finally, the strip raw material falls into the crushing roller 6, where it is crushed into granular medicine.

[0015] The first cleaning head 7 is located near the auger conveyor 2. After the movable plate 3 is removed, the first cleaning head 7 can clean the inside of the auger conveyor 2. The main water inlet pipe 10 has two branches, one of which connects to the first cleaning head 7 and the other connects to the second cleaning head 8. The second cleaning head 8 includes an inlet water pipe 16 and an outer sleeve 15. The inlet water pipe 16 is connected to the main water inlet pipe 10, and the outer sleeve 15 is fitted over and communicates with the inlet water pipe 16. The surface of the outer sleeve 15 is provided with multiple nozzles 17, which are staggered to form an angle to meet the cleaning needs of different parts. The second cleaning head 8 is driven by a servo motor 11 to rotate the drive shaft 12. The drive gear 13 on the drive shaft 12 meshes with the driven gear 14 on the outer sleeve 15, causing the outer sleeve 15 to rotate around the inlet water pipe 16, thereby adjusting the spray angle of the nozzles 17.

[0016] A protective cover 9 is installed on the front of the pellet mill to protect the operator's safety and prevent material splashing. A servo motor 11 is installed on the back of the pellet mill and is connected to the drive gear 13 via a drive shaft 12. The drive gear 13 meshes with the driven gear 14 on the outer sleeve 15 to realize the rotational movement of the outer sleeve 15. The water jet from the nozzle 17 drives the cutter 5 to rotate, thereby achieving all-round cleaning of the cutter 5.

[0017] In practical applications, the working principle of this device is as follows: Raw materials enter the auger conveyor 2 through the feed hopper 1 and are conveyed to the double roller 4 by the auger conveyor 2. The double roller 4 compresses the raw materials into flakes, then the cutter 5 cuts the flake raw materials into strips, and finally the crushing roller 6 crushes the strip raw materials into granular medicine. During cleaning, the movable plate 3 on the auger conveyor 2 is removed, and the first cleaning head 7 cleans the inside of the auger conveyor 2. The second cleaning head 8 drives the outer tube 15 to rotate through the servo motor 11, adjusting the spray angle of the nozzle 17 to clean the double roller 4, the cutter 5, and the crushing roller 6. The water flow sprayed from the nozzle 17 drives the cutter 5 to rotate, thereby achieving all-round cleaning of the cutter 5.

[0018] In this embodiment, the slot design of the movable plate 3 eliminates the need to disassemble the entire auger conveyor 2 during the cleaning process, reducing cleaning time and labor intensity. The staggered positioning and angle adjustment function of the nozzles 17 ensure full coverage of the cleaning range, avoiding blind spots. The automated nozzle adjustment mechanism driven by the servo motor 11 improves the accuracy and efficiency of cleaning. The angle design between the nozzles 17 allows the water flow to cover a wider cleaning area, while the water flow from the nozzles 17 drives the cutter 5 to rotate, further improving the cleaning effect.

[0019] First, a movable plate is movably mounted on the auger conveyor via a slot. Removing the movable plate allows for flushing of the auger conveyor's interior. This movable plate design significantly improves cleaning convenience and avoids the cleaning blind spots caused by traditional fixed structures. Second, the second cleaning head uses a servo motor to drive the outer sleeve to rotate, achieving dynamic adjustment of the spray angle. Multiple spray heads are staggered to form an angle, covering different cleaning areas of the double roller conveyor, cutter, and crushing roller. When a spray head is aimed at the cutter, the sprayed water pushes the cutter to rotate, achieving all-around cleaning of the cutter. Finally, the combined use of the first and second cleaning heads achieves comprehensive cleaning of the auger conveyor, double roller conveyor, cutter, and crushing roller, significantly improving cleanliness and efficiency.

[0020] 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. An automatic cleaning device for a dry granulation machine, comprising a feed hopper (1), an auger conveyor (2), a double roller auger (4), a cutter (5), a crushing roller (6), a first cleaning head (7), a second cleaning head (8), a protective cover (9), a main water inlet pipe (10), a servo motor (11), and a transmission mechanism, characterized in that: The auger conveyor (2) is movably mounted with a movable plate (3) via a slot. The first cleaning head (7) is located near the auger conveyor (2). The second cleaning head (8) includes a water inlet pipe (16) and an outer sleeve (15). The surface of the outer sleeve (15) is provided with multiple nozzles (17). The servo motor (11) is connected to the drive gear (13) via a transmission shaft (12). The drive gear (13) meshes with the driven gear (14) on the outer sleeve (15).

2. The automatic cleaning device for a dry granulation machine according to claim 1, characterized in that: The movable plate (3) is detachably mounted on the auger conveyor (2) via a slot.

3. The automatic cleaning device for a dry granulation machine according to claim 2, characterized in that: After the movable plate (3) is removed, the first cleaning head (7) cleans the inside of the auger conveyor (2).

4. The automatic cleaning device for a dry granulation machine according to claim 3, characterized in that: The nozzles (17) are staggered to form an angle.

5. An automatic cleaning device for a dry granulation machine according to claim 4, characterized in that: The water jet from the nozzle (17) drives the cutter (5) to rotate for all-around cleaning.

6. An automatic cleaning device for a dry granulation machine according to claim 5, characterized in that: The main water inlet pipe (10) has two branches, one of which is connected to the first cleaning head (7) and the other is connected to the second cleaning head (8).