Fixed gap type granulating device for dry type granulator

By employing a fixed-gap granulation device in a dry granulation machine, a fixed gap is maintained between the granulation knife and the granulation frame, solving the problems of complex structure and time-consuming disassembly and assembly in existing technologies, and achieving efficient production and tablet uniformity.

CN224142162UActive Publication Date: 2026-04-21NANJING LINGHANG PHARMACEUTICAL MACHINERY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NANJING LINGHANG PHARMACEUTICAL MACHINERY CO LTD
Filing Date
2025-07-04
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

The existing dry pellet mill has a complex pelletizing mechanism structure, which requires frequent adjustment of the gap between the pelletizing screen and the pelletizing blade, resulting in long disassembly and assembly times and affecting production efficiency.

Method used

The fixed-gap granulation device maintains a fixed gap between the granulator and the granulation frame, which is fixed by left and right fixing rods, simplifying the assembly and disassembly process. The uniform splitting of the medicine is achieved by driving the granulator to rotate through a motor.

Benefits of technology

It simplifies production preparation time, improves production efficiency, reduces disassembly and assembly time, and ensures tablet size uniformity.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of dry type granulators, in particular to a fixed gap type granulating device for a dry type granulator, which comprises a material plate, a granulating net rack and a granulating cutter, the granulating net rack is of a hook-shaped structure, two ends of the granulating net rack are respectively fixed on the granulator through a left fixing rod and a right fixing rod, and the granulating cutter is fixed on the material plate. The material plate is arranged at a discharge hole of the granulator and is lapped at one end of the granulating net rack, the granulating cutter is arranged at the circle center of an arc section on the granulating net rack, and a fixed gap is kept between the edge of the granulating cutter and the arc section; the granulating machine has the beneficial effects that the gap between the granulating cutter and the granulating net rack is fixed, and does not need to be adjusted during production, so that the production preparation time is shortened.
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Description

Technical Field

[0001] This utility model relates to the field of dry granulation machine technology, and more specifically, to a fixed-gap granulation device for a dry granulation machine. Background Technology

[0002] Previously, the sizing mechanism of dry pellet mills had an adjustable structure between the sizing blade and the sorting screen, with the sizing screen being a movable structure. Each time the screen was disassembled and reassembled, the distance between the sizing screen and the sizing blade had to be adjusted for pelletizing. This previous structure had the following problems: 1. Complex structure: many parts required frequent disassembly and reassembly, resulting in lengthy disassembly and reassembly times; 2. The adjustment mechanism was located on the front cover of the dry pellet mill, and the gap size was not visible when the cover was closed; 3. The adjustment process was time-consuming, affecting production efficiency.

[0003] To address the aforementioned issues, there is an urgent need for a fixed-gap granulation device for dry granulation machines. Summary of the Invention

[0004] The purpose of this invention is to provide a fixed-gap granulation device for a dry granulation machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, a fixed-gap sizing device for a dry granulator is provided, comprising a material plate, a sizing screen frame, and a sizing knife. The sizing screen frame has a hook-shaped structure, with its two ends fixed to the granulator by a left fixed rod and a right fixed rod, respectively. The material plate is located at the discharge port of the granulator and overlaps one end of the sizing screen frame. The sizing knife is located at the center of an arc segment on the sizing screen frame, and the edge of the sizing knife maintains a fixed gap with the arc segment.

[0006] The inner side of the granular mesh frame is covered with granular mesh.

[0007] Furthermore, the granulator has a cylindrical structure, including a cylinder and a blade head, with the blade head arranged in a ring at equal intervals on the axial surface of the cylinder.

[0008] Furthermore, the granulation knife is driven by a motor built into the granulator.

[0009] Furthermore, the right end of the whole grain mesh frame has an opening for inserting the right fixing rod, and the left end of the whole grain mesh frame is connected to the left fixing rod by a bending angle.

[0010] Furthermore, the main body of the granulation frame has a semi-circular ring structure, the axis of the granulation knife is coaxial with the main body of the granulation frame, the knife head has an inclined surface, and the knife head crushes the medicine as the granulation knife rotates and causes it to pass through the granulation mesh and split into tablets of uniform size.

[0011] Furthermore, the granulating knife and granulating frame are made of 304 stainless steel or 316L stainless steel.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] The gap between the granulator and the granulator frame is fixed and does not need to be adjusted during production, thus shortening the production preparation time.

[0014] In the granulation system, the granulator blade and the granulation mesh frame are components that need to be disassembled frequently. In this application, the granulator blade is directly fixed to the drive shaft by a cap nut, while the granulation mesh frame is directly fixed by the fixing rods on the left and right sides, making disassembly very convenient. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 One of the structural schematic diagrams of the granulation mesh frame in this utility model;

[0017] Figure 3 This is the second schematic diagram of the granulation mesh frame in the utility model.

[0018] The meanings of the labels in the diagram are as follows:

[0019] 1. Material plate; 2. Granulating screen frame; 3. Granulating knife; 301. Cylinder; 302. Knife head; 4. Left fixing rod; 5. Right fixing rod; 6. Granulating screen. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] Please see Figures 1-3As shown, a fixed-gap pelletizing device for a dry pellet mill is provided, including a material plate 1, a pelletizing frame 2, and a pelletizing knife 3. The pelletizing frame 2 has a hook-shaped structure, and its two ends are fixed to the pellet mill by a left fixing rod 4 and a right fixing rod 5, respectively. The material plate 1 is set at the discharge port of the pellet mill and overlaps one end of the pelletizing frame 2. The pelletizing knife 3 is set at the center of the arc segment on the pelletizing frame 2, and the edge of the pelletizing knife 3 maintains a fixed gap with the arc segment.

[0023] The inner side of the granulation mesh frame 2 is covered with a granulation mesh 6, which is made of 304 stainless steel or 316L stainless steel and is in the shape of a mesh. The size of the mesh is determined according to the actual needs of the pharmaceutical production.

[0024] In this embodiment, the granulating knife 3 has a cylindrical structure, including a cylinder 301 and a knife head 302. The knife head 302 is arranged in a ring at equal intervals on the axial surface of the cylinder 301. The granulating mesh frame 2 includes two parts, front and rear, which are fixedly connected by reinforcing ribs. The length between the two granulating mesh frames 2 is equal to the length of the cylinder 301. The granulating knife 3 is driven by a motor built into the granulator. The granulating knife 3 is directly fixed to the drive shaft of the motor by a cap nut.

[0025] In this embodiment, the right end of the whole grain mesh frame 2 has an opening for the insertion of the right fixing rod 5, and the left end of the whole grain mesh frame 2 is connected to the left fixing rod 4 by a bending angle. During the installation and fixing process, the whole grain mesh frame 2 can rotate around the right fixing rod 5, and then the bending angle of the left end of the whole grain mesh frame 2 is hung on the left fixing rod 4, at which time the position of the whole grain mesh frame 2 is fixed; only when disassembling can the whole grain mesh frame 2 be rotated in the opposite direction to detach it from the left fixing rod 4 at the left end;

[0026] Work process:

[0027] In this application, during the working process, the medicine is crushed and output as a plate-shaped product by the pharmaceutical machine, and then transported through the material plate 1 to the granulation mesh frame 2. Figure 1 As can be seen, the material plate 1 has a slope, which facilitates the sliding of the plate-shaped medicine. Then the granulator 3 operates. The granulator 3 has a beveled head 302. When the granulator 302 rotates, it can crush the medicine and make it contact the granulator net 6 below. The medicine is split into tablets of uniform size and passes through the granulator net 6.

[0028] 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. A fixed-gap granulating device for a dry granulator, comprising a material plate (1), a granulating net frame (2) and a granulating knife (3), characterized in that: The granulation frame (2) has a hook-shaped structure, and its two ends are fixed to the granulator by the left fixing rod (4) and the right fixing rod (5) respectively. The material plate (1) is set at the discharge port of the granulator and overlaps one end of the granulation frame (2). The granulation knife (3) is set at the center of the arc segment on the granulation frame (2). The edge of the granulation knife (3) maintains a fixed gap with the arc segment. The inner side of the granulated mesh frame (2) is covered with granulated mesh (6).

2. The fixed-gap sizing device for a dry granulator according to claim 1, characterized in that: The granulator (3) has a cylindrical structure, including a cylinder (301) and a cutter head (302). The cutter head (302) is arranged in a ring at equal intervals on the axial surface of the cylinder (301).

3. The fixed-gap sizing device for a dry granulator according to claim 2, characterized in that: The granulation knife (3) is driven by a motor built into the granulator.

4. The fixed-gap sizing device for a dry granulator according to claim 3, characterized in that: The right end of the whole grain mesh frame (2) has an opening for the insertion of the right fixing rod (5), and the left end of the whole grain mesh frame (2) is connected to the left fixing rod (4) by a bending angle.

5. The fixed clearance sizing device for a dry granulator according to claim 4, characterized in that: The main body of the granulation frame (2) is a semi-circular ring structure. The axis of the granulation knife (3) is coaxial with the main body of the granulation frame (2). The knife head (302) has an inclined surface. The knife head (302) crushes the medicine as the granulation knife (3) rotates and makes it pass through the granulation net (6) to split into tablets of uniform size.

6. A fixed clearance sizing device for a dry granulator as claimed in claim 5, wherein: The granulator (3) and granulator frame (2) are made of 304 stainless steel or 316L stainless steel.