A feeding mechanism for a pharmaceutical micro-airflow pulverizer
By introducing anti-clogging components and feeding components into the feeding mechanism of the micro-airflow pulverizer, the problems of discontinuous feeding and easy clogging are solved, achieving stable material flow and improving production efficiency, thus meeting the pharmaceutical industry's demand for efficient and clean production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHIJIAZHUANG WOSHENG PHARM EQUIP CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-07-31
AI Technical Summary
Existing micro-flow pulverizers have problems with discontinuous feeding and clogging when dealing with granular raw materials, which affects production efficiency and drug quality. The clogging problem is more serious when processing raw materials containing fibrous or sticky components. Furthermore, the feeding speed cannot be flexibly adjusted according to the internal working conditions of the pulverizer, resulting in unstable pulverization effect.
A feeding mechanism including an anti-clogging component and a feeding component was designed. The anti-clogging component stirs the material at the bottom of the tank through a rotating shaft and a material rack, and forms a fluidization effect with the air inlet pipe and air hole to avoid clogging. The feeding component realizes quantitative feeding and uniform dispersion in a closed environment through a feeding auger and a tilting plate. Combined with the smooth inner wall of the tank and the inclined discharge pipe, it ensures stable material flow.
It achieves continuous and stable material feeding, avoids blockages, improves production efficiency and drug quality consistency, and meets the pharmaceutical industry's requirements for clean production.
Smart Images
Figure CN224573857U_ABST
Abstract
Description
Technical Field
[0001] The embodiments disclosed herein relate to the field of pharmaceutical equipment technology, and more specifically, to a feeding mechanism for a pharmaceutical micro-airflow pulverizer. Background Technology
[0002] In the pharmaceutical industry, micro-airflow pulverizers, with their high efficiency and fine pulverization capabilities, have become key equipment for preparing high-purity, uniform drug powders. However, existing feeding mechanisms suffer from problems such as inconsistent feeding and easy clogging when dealing with granular raw materials, seriously affecting production efficiency and drug quality.
[0003] Traditional feeding mechanisms often employ gravity flow or simple spiral propulsion, which are ill-suited to the complex characteristics of pharmaceutical raw materials. Drug particles are easily affected by factors such as humidity and static electricity, leading to bridging within the feed hopper. This disrupts the stable flow of material into the grinder, causing frequent interruptions in the grinding process. Furthermore, this feeding method can cause material to accumulate within the hopper, further hindering subsequent feeding and severely slowing down production.
[0004] Furthermore, design flaws in the feed pipe are also a significant factor contributing to frequent blockages. Commonly, the inner walls of the pipes are not smooth enough, and transitions at diameter changes are abrupt. This makes it easy for granular raw materials to become trapped and accumulate due to friction and collision as they flow through, gradually forming blockages. The blockage problem is particularly challenging when processing raw materials containing fibrous or sticky components. Once a pipe becomes blocked, not only is it necessary to shut down for cleaning, but there is also a risk of cross-contamination, making it difficult to meet the stringent requirements of Good Manufacturing Practices (GMP) for pharmaceuticals.
[0005] Meanwhile, the feeding mechanism and the main unit of the air jet mill lack effective coordination. The feeding speed cannot be flexibly adjusted according to the internal operating conditions of the mill. When the mill load changes, the problems of discontinuous feeding or blockage worsen, leading to unstable pulverization effect and uneven particle size distribution of the product, directly affecting the key quality indicators of the medicine. As the pharmaceutical industry moves towards high-end and refined processes, developing new feeding mechanisms to solve the feeding problem is of great significance for improving production efficiency and ensuring the consistency of drug quality. Utility Model Content
[0006] To overcome the above-mentioned defects, the embodiments of this disclosure provide a feeding mechanism for a pharmaceutical micro-airflow pulverizer, which solves the technical problem in the prior art where the inner wall of the pipe is not smooth enough and the transition at the pipe diameter change is abrupt, making it easy for particulate raw materials to be stuck due to friction and collision when flowing through, and gradually accumulating to form blockages.
[0007] According to one aspect, at least one embodiment of the present disclosure provides a feeding mechanism for a pharmaceutical micro-volume air jet mill, characterized in that it comprises:
[0008] A material tank and a top cover, wherein the top cover is installed on the top of the material tank;
[0009] A feeding assembly is disposed on the material tank;
[0010] The drive motor is mounted on the outer wall of the tank, and the anti-clogging component is disposed at the bottom of the tank.
[0011] The anti-clogging component includes a rotating shaft, which is rotatably connected to the inner wall of the material tank. One end of the rotating shaft is connected to the output end of the drive motor, and a material rack is provided at one end of the rotating shaft.
[0012] As a further technical solution, the lower end of the material tank is connected to a discharge pipe, and the discharge pipe is fixedly connected to the material tank by a flange. An air inlet pipe is provided inside the discharge pipe.
[0013] As a further technical solution, an outer cover is connected between the air inlet pipe and the discharge pipe, and a number of air holes are opened on the surface of the outer cover. A converging protrusion is provided inside the discharge pipe.
[0014] As a further technical solution, the feeding assembly includes a feeding pipe connected to the inner wall of the material tank, a feeding auger is provided inside the feeding pipe, and a feeding hopper is installed on the feeding pipe.
[0015] As a further technical solution, a central shaft is rotatably connected inside the material tank, a second motor is provided on the outer wall of the material tank, the output end of the second motor is connected to the central shaft, and a tilting plate is provided on the central shaft.
[0016] As a further technical solution, one end of the discharge pipe has a certain downward tilt angle.
[0017] As a further technical solution, both the material tank and the tilting plate are circular in structure.
[0018] As a further technical solution, the lower end of the inner wall of the material tank has a smooth surface structure, and the lower end of the material tank has an arc-shaped transition structure.
[0019] The beneficial effects of the embodiments disclosed herein are as follows:
[0020] 1. The beneficial effect of the anti-clogging component in this disclosure is that the material rack rotates continuously under the drive of the motor, which generates a dynamic stirring effect on the material at the bottom of the tank, effectively breaking the bridging phenomenon between particles and preventing the material from accumulating due to humidity or electrostatic adsorption. At the same time, the cooperation between the air inlet pipe and the air hole forms a fluidization effect in the discharge pipe, and the uniform airflow reduces the viscosity of the material. The converging convex layer guides the stable flow of the gas-solid two-phase flow, avoiding stagnation and blockage caused by friction of the inner wall of the pipe or changes in pipe diameter. Through the dual action of mechanical stirring and airflow assistance, this component eliminates the potential for blockage in the feeding process from the source, ensuring that the material enters the crusher continuously in a loose state and improving the feeding stability.
[0021] 2. The beneficial effect of the feeding component in this disclosure is that the combination of the feeding auger and the feeding hopper realizes quantitative feeding in a closed environment, avoiding dust overflow and impurity contamination caused by traditional open feeding. The tilting plate can disperse the concentrated feeding into a uniform material layer under the drive of the central shaft, preventing the material from accumulating locally during feeding. Combined with the circular structure and smooth inner wall of the tank, the material forms a uniform flow state in the tank, ensuring that the stirring effect of the subsequent anti-clogging component is maximized. Through the coordinated design of quantitative conveying and uniform dispersion, this component not only improves the feeding efficiency, but also realizes the continuity and stability of the feeding process. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.
[0023] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;
[0024] Figure 2 This is an isometric drawing of the present disclosure;
[0025] Figure 3 This is an isometric sectional view of the present disclosure;
[0026] Figure 4 Appendix to this disclosure Figure 3 Enlarged view of part A in the middle;
[0027] In the diagram: 1. Material tank; 2. Top cover; 3. Drive motor; 4. Anti-clogging component; 4-1. Rotating shaft; 4-2. Material rack; 4-3. Discharge pipe; 4-4. Air inlet pipe; 4-5. Outer cover; 4-6. Air vent; 4-7. Converging protrusion; 5. Feeding component; 5-1. Feed pipe; 5-2. Feed auger; 5-3. Feed hopper; 5-4. Central shaft; 5-5. Second motor; 5-6. Tilting plate. Detailed Implementation
[0028] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.
[0029] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."
[0030] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.
[0031] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0032] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.
[0033] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0034] like Figures 1-4 As shown, a feeding mechanism for a pharmaceutical micro-airflow pulverizer according to an embodiment of the present disclosure is illustrated, comprising:
[0035] The material tank 1 and the top cover 2 are installed on the top of the material tank 1;
[0036] A feeding assembly 5 is disposed on the material tank 1;
[0037] The drive motor 3 is installed on the outer wall of the material tank 1, and the anti-clogging component 4 is located at the bottom of the material tank 1.
[0038] The anti-clogging component 4 includes a rotating shaft 4-1, which is rotatably connected to the inner wall of the material tank 1. One end of the rotating shaft 4-1 is connected to the output end of the drive motor 3. A material rack 4-2 is provided at one end of the rotating shaft 4-1. A discharge pipe 4-3 is connected to the lower end of the material tank 1. The discharge pipe 4-3 is fixedly connected to the material tank 1 by a flange. An air inlet pipe 4-4 is provided inside the discharge pipe 4-3. An outer cover 4-5 is connected between the air inlet pipe 4-4 and the discharge pipe 4-3. Several air holes 4-6 are opened on the surface of the outer cover 4-5. A constricting protrusion 4-7 is provided inside the discharge pipe 4-3.
[0039] In some examples, during the feeding process of a pharmaceutical micro-airflow pulverizer, an anti-clogging component 4 is designed to prevent material from accumulating and clogging at the bottom of the hopper 1. This component is centered around a rotating shaft 4-1 rotatably connected to the outer wall of the hopper 1. One end of the rotating shaft 4-1 is connected to the output end of the drive motor 3, and the other end is equipped with a material rack 4-2 located at the bottom of the hopper 1. When the drive motor 3 is started, the rotating shaft 4-1 drives the material rack 4-2 to rotate, which agitates the material at the bottom of the hopper 1, breaks the accumulation of the material, and keeps it in a loose and flowing state.
[0040] An air inlet pipe 4-4 is installed inside the discharge pipe 4-3, which is fixedly connected to the lower end of the material tank 1 via a flange. Several air holes 4-6 are opened on the surface of the outer cover 4-5 between the air inlet pipe 4-4 and the discharge pipe 4-3. An external air source delivers airflow through the air inlet pipe 4-4. The airflow is evenly sprayed out through the air holes 4-6. Through the dual-stage air outlet structure, a fluidization effect is formed in the discharge pipe 4-3, which further reduces the viscosity and accumulation possibility of the material. The converging protrusion 4-7 inside the discharge pipe 4-3 can guide the airflow and material, so that the material enters the crusher at a stable flow rate under the drive of the airflow, avoiding blockage caused by uneven flow rate.
[0041] Through the coordinated operation of components such as rotating shaft 4-1, material rack 4-2, air inlet pipe 4-4, air hole 4-6, and gathering protrusion 4-7, the anti-clogging component 4 achieves the function of preventing material from accumulating at the bottom of the material tank 1 and ensuring smooth feeding.
[0042] like Figures 1-4 As shown in the figure, the feeding component 5 in this embodiment includes a feeding pipe 5-1, which is connected to the inner wall of the material tank 1. A feeding auger 5-2 is provided inside the feeding pipe 5-1. A feeding hopper 5-3 is installed on the feeding pipe 5-1. A central shaft 5-4 is rotatably connected inside the material tank 1. A second motor 5-5 is provided on the outer wall of the material tank 1. The output end of the second motor 5-5 is connected to the central shaft 5-4. A tilting plate 5-6 is provided on the central shaft 5-4.
[0043] In some examples, to achieve material replenishment of tank 1 in a closed environment and avoid material contamination, a replenishment component 5 is designed. This component uses a feed pipe 5-1 connected to the outer wall of tank 1 as a channel. The feed auger 5-2 inside the feed pipe 5-1 is driven by a motor to rotate, which can quantitatively transport the material in the feed hopper 5-3 into tank 1. This closed auger conveying structure ensures that the inside of tank 1 is isolated from the outside during the replenishment process, preventing dust, impurities and other contaminants from polluting the material.
[0044] The central shaft 5-4 inside the material tank 1 is connected to the second motor 5-5 on the outer wall. The tilting plate 5-6 on the central shaft 5-4 can be driven to rotate by the second motor 5-5 when replenishing material. When the material enters the material tank 1 through the feed pipe 5-1, the tilting plate 5-6 rotates to evenly distribute the material to the bottom of the material tank 1, avoiding the material from accumulating in a certain area when replenishing material, and further ensuring the closed state inside the material tank 1.
[0045] Through the coordinated operation of components such as the feed pipe 5-1, feed auger 5-2, feeding hopper 5-3, central shaft 5-4, and tilting plate 5-6, the feeding assembly 5 achieves the function of replenishing materials in a closed state and avoiding contamination, thus meeting the requirements of the pharmaceutical industry for a clean production environment.
[0046] For example, such as Figure 1 As shown, one end of the discharge pipe 4-3 has a certain downward tilt angle.
[0047] In some examples, by tilting the material at an angle, it sinks and follows the airflow, making the discharge smoother and enabling it to work with an airflow pulverizer to create a smooth and non-clogging feeding effect.
[0048] For example, such as Figure 3 As shown, both the material tank 1 and the tilting plates 5-6 are circular in structure.
[0049] In some examples, the circular structure allows the flip plate 5-6 to remain in contact with the inner wall of the tank 1 even after rotating 180°.
[0050] For example, such as Figure 1 As shown, the lower end of the inner wall of the material tank 1 has a smooth surface structure, and the lower end of the material tank 1 has an arc-shaped transition structure.
[0051] In some examples, the material is allowed to flow more smoothly downwards through smooth and curved structural surfaces.
[0052] In actual use: Raw materials enter the feeding pipe 5-1 through the top feeding hopper 5-3. The feeding auger 5-2 rotates at a constant speed driven by a motor, using the pushing action of the spiral blades to quantitatively and evenly transport the material into the material tank 1, avoiding the accumulation problem of traditional feeding methods. The second motor 5-5 drives the tilting plate 5-6 on the central shaft 5-4 to perform a circular motion. The tilting plate 5-6 has an arc-shaped structure and maintains a small gap with the inner wall of the material tank 1. Through rotation, it disperses the concentrated falling material to all sides, forming a uniform material layer spread at the bottom of the material tank 1, laying the foundation for subsequent anti-clogging treatment.
[0053] After the drive motor 3 starts, the rotating shaft 4-1 drives the material rack 4-2 to rotate clockwise at the bottom of the material tank 1. The blades of the material rack 4-2 are arranged at a 45-degree angle, which can generate a dual effect of upward stirring and horizontal pushing of the accumulated material, effectively breaking up the agglomeration caused by electrostatic adsorption and humidity between particles. At the same time, the compressed air introduced by the air inlet pipe 4-4 is heated and then ejected with pressure through the air hole 4-6. Under the guiding effect of the converging protrusion 4-7, a spiral air pressure is formed in the discharge pipe 4-3. This dynamic pressure and the gravity of the material form a synergistic effect. The inner wall of the material tank 1 is made of mirror polishing process, and the lower end transitions to the discharge pipe 4-3 in a 120-degree arc. Combined with the downward 15-degree tilt angle of the discharge pipe 4-3, the material flows into the crusher continuously at a stable flow rate under the dual effect of airflow lifting and gravity sliding, avoiding the material retention problem caused by the right angle bend of the pipe in traditional equipment. The entire process achieves continuous feeding in a closed environment through a triple mechanism of mechanical dispersion, airflow assistance, and structural optimization.
[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.
Claims
1. A feeding mechanism for a pharmaceutical micro-volume airflow pulverizer, characterized in that, include: A material tank (1) and a top cover (2), the top cover (2) being installed on the top of the material tank (1); A feeding assembly (5) is disposed on the material tank (1); A drive motor (3) and an anti-clogging component (4) are provided, wherein the drive motor (3) is installed on the outer wall of the material tank (1) and the anti-clogging component (4) is provided at the bottom of the material tank (1); The anti-clogging component (4) includes a rotating shaft (4-1), which is rotatably connected to the inner wall of the material tank (1). One end of the rotating shaft (4-1) is connected to the output end of the drive motor (3), and a material rack (4-2) is provided at one end of the rotating shaft (4-1).
2. The feeding mechanism for a pharmaceutical micro-airflow pulverizer according to claim 1, characterized in that, The lower end of the material tank (1) is connected to a discharge pipe (4-3), and the discharge pipe (4-3) is fixedly connected to the material tank (1) by a flange. An air inlet pipe (4-4) is provided inside the discharge pipe (4-3).
3. The feeding mechanism for a pharmaceutical micro-airflow pulverizer according to claim 2, characterized in that, An outer cover (4-5) is connected between the air inlet pipe (4-4) and the discharge pipe (4-3). The outer cover (4-5) has several air holes (4-6) on its surface, and a converging protrusion (4-7) is provided inside the discharge pipe (4-3).
4. The feeding mechanism for a pharmaceutical micro-airflow pulverizer according to claim 1, characterized in that, The feeding assembly (5) includes a feeding pipe (5-1), which is connected to the inner wall of the material tank (1). A feeding auger (5-2) is installed inside the feeding pipe (5-1), and a feeding hopper (5-3) is installed on the feeding pipe (5-1).
5. The feeding mechanism for a pharmaceutical micro-airflow pulverizer according to claim 4, characterized in that, The material tank (1) is rotatably connected to a central shaft (5-4), and a second motor (5-5) is provided on the outer wall of the material tank (1). The output end of the second motor (5-5) is connected to the central shaft (5-4), and a flip plate (5-6) is provided on the central shaft (5-4).
6. The feeding mechanism for a pharmaceutical micro-airflow pulverizer according to claim 2, characterized in that, The discharge pipe (4-3) has a downward tilt angle at one end.
7. The feeding mechanism for a pharmaceutical micro-airflow pulverizer according to claim 5, characterized in that, Both the material tank (1) and the tilting plate (5-6) are circular.
8. The feeding mechanism for a pharmaceutical micro-airflow pulverizer according to claim 1, characterized in that, The lower end of the inner wall of the material tank (1) has a smooth surface structure, and the lower end of the material tank (1) has an arc-shaped transition structure.