A pharmaceutical mixing device with multiple stirring functions

Abstract

This utility model discloses a pharmaceutical mixing device with multiple stirring functions in the field of pharmaceutical processing equipment technology. It includes a mixing chamber and four connecting plates. The connecting plates are located inside the mixing chamber. A feed inlet is fixedly connected to the top of the mixing chamber, and a discharge valve is fixedly connected to the bottom. A motor is fixedly connected to the top of the mixing chamber. The bottom end of the motor's power output shaft passes through the mixing chamber and extends into its inner cavity. An installation chamber is fixedly connected to the bottom end of the motor's power output shaft, and the installation chamber is fixedly connected to the connecting plates. This pharmaceutical mixing device with multiple stirring functions has a reasonable structural design. Through the combined motion of revolution and rotation, it achieves thorough mixing of the pharmaceutical powder, improves mixing uniformity, and allows for cleaning of the inner wall of the mixing chamber, ensuring continuous cleanliness of the inner wall and efficient mixing process.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical processing equipment technology, specifically a pharmaceutical mixing device with multiple stirring functions. Background Technology

[0002] Pharmaceutical mixing refers to mixing and stirring different powdered ingredients in appropriate proportions and formulas to produce powdered ingredients of the desired composition. The powdered ingredients are added to the container of a pharmaceutical mixing device, and a binder is added to the container. The powdered ingredients and the binder are thoroughly mixed at high speed by a mixing paddle at the bottom of the cylindrical container to form a moist soft material. Then, a high-speed pulverizing paddle cuts the material into a uniform shape to obtain a drug with a specific composition.

[0003] The prior art patent application number is 202022416277.6, entitled "A Novel Pharmaceutical Mixing Device," which includes a housing. The upper end of the housing has two feed inlets and a lifting device. The lower end of the lifting device has a rotating and crushing mechanism. The lower end of the rotating and crushing mechanism is connected to a vibrating plug, which is equipped with a bearing. The lower end of the housing has a discharge port, and the housing is equipped with a bearing sleeve that mates with the bearing. The bearing sleeve is located near the discharge port. This invention connects the rotating and crushing mechanism to the plug via a telescopic device, allowing the discharge port to be blocked during crushing and processing, and eliminating the need for manual removal afterward, thus improving work efficiency.

[0004] However, its stirring mechanism adopts a simple single-axis unidirectional rotation design, which can only achieve a basic turning effect when processing drug powders with different components. It is difficult to achieve sufficient shearing, convection and diffusion of drug powders. Especially for drug powders with large differences in density and particle size, the mixing uniformity is low and cannot meet the requirements of high-precision mixing. At the same time, the equipment lacks a cleaning mechanism for the inner wall of the mixing chamber. As the mixing process continues, drug powder is very easy to adhere to the chamber wall, which not only causes raw material waste, but the residual drug powder may also cause cross-contamination with subsequent batches. In addition, the accumulated drug powder will form clumps on the chamber wall over a long period of time, increasing the difficulty of cleaning and reducing the efficiency of the equipment. Frequent disassembly and cleaning will also increase labor costs and equipment wear and tear risks. Therefore, we propose a pharmaceutical mixing device with multiple stirring functions. Utility Model Content

[0005] The purpose of this invention is to provide a pharmaceutical mixing device with multiple stirring functions, in order to solve the problems mentioned in the background art, which uses a simple design of single-axis unidirectional rotation for stirring mechanism. When processing different components of pharmaceutical powder, it can only achieve a basic turning effect, and it is difficult to achieve sufficient shearing, convection and diffusion of pharmaceutical powder. The device lacks a cleaning mechanism for the inner wall of the mixing chamber. As the mixing process continues, pharmaceutical powder is very easy to adhere to the chamber wall, which not only causes waste of raw materials, but the residual pharmaceutical powder may also cause cross-contamination with subsequent batches.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pharmaceutical mixing device with multiple stirring functions, comprising a mixing chamber and four connecting plates. The connecting plates are located inside the mixing chamber. A feed inlet is fixedly connected to the top of the mixing chamber, and a discharge valve is fixedly connected to the bottom of the mixing chamber. A motor is fixedly connected to the top of the mixing chamber. The bottom end of the motor's power output shaft passes through the mixing chamber and extends into the inner cavity of the mixing chamber. An installation chamber is fixedly connected to the bottom end of the motor's power output shaft. The installation chamber is fixedly connected to the connecting plates. Four transmission chambers are opened inside the installation chamber. A gear driven rod is rotatably connected to the bottom of the inner cavity of each transmission chamber.

[0007] As a further description of the above technical solution:

[0008] The bottom end of the gear driven rod passes through the mounting chamber and extends to the bottom of the mounting chamber, and a stirring roller is fixedly connected to the bottom end of the gear driven rod.

[0009] As a further description of the above technical solution:

[0010] The stirring roller has through holes on its outer side, and the through holes are arranged sequentially from top to bottom. The inner wall of the transmission chamber is rotatably connected to a gear transmission rod.

[0011] As a further description of the above technical solution:

[0012] One end of the gear transmission rod passes through the transmission compartment and extends into the inner cavity of the mounting compartment, and a first drive gear is fixedly connected to the outer side of the gear transmission rod.

[0013] As a further description of the above technical solution:

[0014] The first drive gear meshes with the driven gear rod, and a mounting bracket is fixedly connected to the inner wall of the mixing chamber, with a fixing rod fixedly connected to the top of the mounting bracket.

[0015] As a further description of the above technical solution:

[0016] The top end of the fixing rod passes through the mounting compartment and extends into the inner cavity of the mounting compartment, and a second drive gear is fixedly connected to the top end of the fixing rod, the second drive gear meshing with the gear transmission rod.

[0017] As a further description of the above technical solution:

[0018] The connecting plate has a first guide hole on one side, and the first guide holes are arranged in sequence. A scraper is fixedly connected to one side of the connecting plate, and a second guide hole is opened on one side of the scraper, and the second guide holes are arranged in sequence from top to bottom.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. This pharmaceutical mixing device with multiple stirring functions, after the motor starts, its power output shaft drives the installation chamber to rotate. The installation chamber, through the connecting plate, drives the entire stirring assembly to rotate within the mixing chamber. Simultaneously, during the rotation of the installation chamber, the second drive gear at the top of the fixed rod remains stationary. When the gear transmission rod inside the installation chamber rotates with the installation chamber and passes the second drive gear, the two mesh, and the second drive gear drives the gear transmission rod to rotate around its own axis. The first drive gear on the outside of the gear transmission rod meshes with the gear driven rod, transmitting the rotation to the gear driven rod, which in turn drives the stirring roller at the bottom to rotate. The stirring roller rotates while following the revolution of the installation chamber, forming a compound motion. The through holes arranged from top to bottom on the outer side allow the powder at different positions to generate convection and shear during the stirring process. When the installation chamber rotates, the four stirring rollers stir in different areas within the mixing chamber. Through the compound motion of revolution and rotation, the powder is fully mixed, improving the mixing uniformity.

[0021] 2. This pharmaceutical mixing device with multiple stirring functions, when the mixing and stirring mechanism drives the connecting plate to rotate inside the mixing chamber, the scraper fixed to one side of the connecting plate moves synchronously. The scraper closely adheres to the inner wall of the mixing chamber, and through rotational scraping, it scrapes off the powder adhering to the chamber wall. The setting of the first and second guide holes further optimizes the cleaning effect: the first guide hole allows the powder accumulated between the scraper and the connecting plate to be discharged under the action of centrifugal force, avoiding blockage; the second guide holes are arranged sequentially from top to bottom, and when the scraper removes the powder from the chamber wall, it can guide the scraped powder to quickly detach from the scraper surface through the guide holes, reducing the residue of powder on the scraper and preventing the accumulation of powder from affecting the adhesion between the scraper and the chamber wall and the cleaning effect. At the same time, the existence of the guide holes allows the powder to quickly flow back into the mixing chamber to participate in the mixing, which not only achieves the cleaning of the chamber wall, but also avoids the waste of powder, ensuring the continuous cleanliness of the inner wall of the mixing chamber and the efficient operation of the mixing process. Attached Figure Description

[0022] Figure 1 This is a front-view perspective three-dimensional structural diagram of a pharmaceutical mixing device with multiple stirring functions proposed in this utility model;

[0023] Figure 2 This is a bottom-view perspective view of a pharmaceutical mixing device with multiple stirring functions proposed in this utility model.

[0024] Figure 3 This is a front sectional view of a pharmaceutical mixing device with multiple stirring functions proposed in this utility model.

[0025] Figure 4 This is a cross-sectional view of the mixing and stirring mechanism of a pharmaceutical mixing device with multiple stirring functions proposed in this utility model;

[0026] Figure 5 This is a schematic diagram of the internal wall cleaning mechanism of a pharmaceutical mixing device with multiple stirring functions proposed in this utility model.

[0027] In the diagram: 100, mixing chamber; 110, feed inlet; 120, discharge valve; 130, motor; 140, mounting chamber; 141, transmission chamber; 150, gear driven rod; 151, stirring roller; 152, through hole; 160, gear transmission rod; 161, first drive gear; 170, mounting bracket; 171, fixing rod; 172, second drive gear; 200, connecting plate; 210, first guide hole; 220, scraper; 221, second guide hole. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] This invention provides a pharmaceutical mixing device with multiple stirring functions. Through a combination of revolution and rotation, it achieves thorough mixing of the pharmaceutical powder, improving mixing uniformity. It also allows for cleaning of the inner wall of the mixing chamber 100, ensuring continuous cleanliness of the inner wall and efficient mixing process. Please refer to [link to relevant documentation]. Figure 1-5 It includes a mixing chamber 100 and four connecting plates 200;

[0032] Please refer to it again. Figure 1-4A feed inlet 110 is fixedly connected to the top of the mixing chamber 100, and a discharge valve 120 is fixedly connected to the bottom of the mixing chamber 100. A motor 130 is fixedly connected to the top of the mixing chamber 100. The bottom end of the power output shaft of the motor 130 passes through the mixing chamber 100 and extends into the inner cavity of the mixing chamber 100. A mounting chamber 140 is fixedly connected to the bottom end of the power output shaft of the motor 130. The mounting chamber 140 is fixedly connected to the connecting plate 200. Four transmission chambers 141 are opened inside the mounting chamber 140. A gear driven rod 150 is rotatably connected to the bottom of the inner cavity of the transmission chamber 141. The bottom end of the gear driven rod 150 passes through the mounting chamber 140 and extends into the inner cavity of the connecting plate 200. At the bottom of the mounting chamber 140, and at the bottom end of the gear driven rod 150, a stirring roller 151 is fixedly connected. A through hole 152 is provided on the outer side of the stirring roller 151, and the through holes 152 are arranged sequentially from top to bottom. A gear drive rod 160 is rotatably connected to the inner wall of the transmission chamber 141. One end of the gear drive rod 160 passes through the transmission chamber 141 and extends into the inner cavity of the mounting chamber 140. A first drive gear 161 is fixedly connected to the outer side of the gear drive rod 160, and the first drive gear 161 meshes with the gear driven rod 150. A mounting bracket 170 is fixedly connected to the inner wall of the mixing chamber 100, and a fixing rod is fixedly connected to the top of the mounting bracket 170. 171, the top end of the fixing rod 171 penetrates through the mounting chamber 140 and extends into the inner cavity of the mounting chamber 140, and a second drive gear 172 is fixedly connected to the top end of the fixing rod 171. The second drive gear 172 meshes with the gear transmission rod 160. After the motor 130 starts, its power output shaft drives the mounting chamber 140 to rotate. The mounting chamber 140 drives the entire stirring assembly to rotate within the mixing chamber 100 through the connecting plate 200. At the same time, during the rotation of the mounting chamber 140, the second drive gear 172 at the top end of the fixing rod 171 remains stationary. When the gear transmission rod 160 inside the mounting chamber 140 rotates with the mounting chamber 140 and passes through... When the second drive gear 172 is engaged, the two gears mesh, and the second drive gear 172 drives the gear transmission rod 160 to rotate around its own axis; the first drive gear 161 on the outer side of the gear transmission rod 160 meshes with the gear driven rod 150, transmitting the rotation to the gear driven rod 150, which in turn drives the bottom stirring roller 151 to rotate; the stirring roller 151 rotates while following the revolution of the mounting chamber 140, forming a compound motion, and the through holes 152 arranged from top to bottom on the outer side allow the powder at different positions to generate convection and shear during the stirring process; when the mounting chamber 140 rotates, the four stirring rollers 151 stir in different areas within the mixing chamber 100;

[0033] In summary: By combining revolution and rotation, the powder is thoroughly mixed, thus improving the uniformity of the mixture.

[0034] Please refer to it again. Figure 1-5The connecting plate 200 is located inside the mixing chamber 100. A first guide hole 210 is provided on one side of the connecting plate 200, and the first guide holes 210 are arranged sequentially. A scraper 220 is fixedly connected to one side of the connecting plate 200. A second guide hole 221 is provided on one side of the scraper 220, and the second guide holes 221 are arranged sequentially from top to bottom. When the mixing and stirring mechanism drives the connecting plate 200 to rotate inside the mixing chamber 100, the scraper 220 fixed to one side of the connecting plate 200 moves synchronously. The scraper 220 closely adheres to the inner wall of the mixing chamber 100, and through rotational scraping, it removes... The powder adhering to the bin wall is scraped off, and the arrangement of the first guide hole 210 and the second guide hole 221 further optimizes the cleaning effect: the first guide hole 210 allows the powder accumulated between the scraper 220 and the connecting plate 200 to be discharged under the action of centrifugal force, avoiding blockage; the second guide holes 221 are arranged sequentially from top to bottom, and when the scraper 220 scrapes off the powder from the bin wall, it can guide the scraped powder to quickly detach from the surface of the scraper 220 through the guide holes, reducing the residue of powder on the scraper 220 and preventing the accumulation of powder from affecting the adhesion between the scraper 220 and the bin wall and the cleaning effect. At the same time, the existence of the guide holes allows the powder to quickly flow back into the mixing bin 100 to participate in mixing, which not only achieves bin wall cleaning but also avoids powder waste;

[0035] In summary: the inner wall of the mixing chamber 100 can be cleaned to ensure the continuous cleanliness of the inner wall of the mixing chamber 100 and the efficient operation of the mixing process;

[0036] In practical use, after the motor 130 starts, its power output shaft drives the installation chamber 140 to rotate. The installation chamber 140 drives the entire stirring assembly to rotate within the mixing chamber 100 via the connecting plate 200. At the same time, during the rotation of the installation chamber 140, the second drive gear 172 at the top of the fixed rod 171 remains stationary. When the gear transmission rod 160 inside the installation chamber 140 rotates with the installation chamber 140 and passes the second drive gear 172, the two mesh. The second drive gear 172 drives the gear transmission rod 160 to rotate around its own axis. The first drive gear 161 on the outside of the gear transmission rod 160 meshes with the gear driven rod 150, transmitting the rotation to the gear driven rod 150, which in turn drives the stirring roller 151 at the bottom to rotate. The stirring roller 151 rotates while following the revolution of the installation chamber 140, forming a compound motion. The through holes 152 arranged from top to bottom on the outside allow the powder at different positions to generate convection and shear during the stirring process. When the installation chamber 140 rotates, the four stirring rollers 151 stir in different areas within the mixing chamber 100. When the mixing and stirring mechanism drives the connecting plate 200 to rotate within the mixing chamber 100, the scraper 220 fixed to one side of the connecting plate 200 moves synchronously. The scraper 220 closely adheres to the inner wall of the mixing chamber 100, and through rotational scraping, it scrapes off the powder adhering to the chamber wall. The arrangement of the first guide hole 210 and the second guide hole 221 further optimizes the cleaning effect: the first guide hole 210 allows the powder accumulated between the scraper 220 and the connecting plate 200 to be discharged under the action of centrifugal force, avoiding blockage at this point; the second guide holes 221 are arranged sequentially from top to bottom. When the scraper 220 scrapes off the powder from the chamber wall, it can guide the scraped powder to quickly detach from the surface of the scraper 220 through the guide holes, reducing the residue of powder on the scraper 220 and preventing the accumulation of powder from affecting the adhesion between the scraper 220 and the chamber wall and the cleaning effect. Meanwhile, the presence of the guide hole allows the powder to quickly flow back into the mixing chamber 100 to participate in the mixing, which not only cleans the chamber wall but also avoids powder waste.

[0037] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A pharmaceutical mixing device with multiple stirring functions, characterized in that: The device includes a mixing chamber (100) and four connecting plates (200). The connecting plates (200) are located inside the mixing chamber (100). A feed inlet (110) is fixedly connected to the top of the mixing chamber (100). A discharge valve (120) is fixedly connected to the bottom of the mixing chamber (100). A motor (130) is fixedly connected to the top of the mixing chamber (100). The bottom end of the power output shaft of the motor (130) passes through the mixing chamber (100) and extends into the inner cavity of the mixing chamber (100). An installation chamber (140) is fixedly connected to the bottom end of the power output shaft of the motor (130). The installation chamber (140) is fixedly connected to the connecting plates (200). Four transmission chambers (141) are opened inside the installation chamber (140). A gear driven rod (150) is rotatably connected to the bottom of the inner cavity of the transmission chamber (141). The bottom end of the gear driven rod (150) passes through the mounting chamber (140) and extends to the bottom of the mounting chamber (140), and the bottom end of the gear driven rod (150) is fixedly connected to a stirring roller (151). The stirring roller (151) has a through hole (152) on its outer side, and the through holes (152) are arranged sequentially from top to bottom. The inner wall of the transmission chamber (141) is rotatably connected to a gear transmission rod (160). One end of the gear transmission rod (160) passes through the transmission chamber (141) and extends into the inner cavity of the mounting chamber (140). A first drive gear (161) is fixedly connected to the outer side of the gear transmission rod (160). The first drive gear (161) is meshed with the gear driven rod (150), and the inner wall of the mixing chamber (100) is fixedly connected to the mounting bracket (170), and the top of the mounting bracket (170) is fixedly connected to the fixing rod (171). The top end of the fixing rod (171) passes through the mounting chamber (140) and extends into the inner cavity of the mounting chamber (140), and the top end of the fixing rod (171) is fixedly connected to a second drive gear (172), which meshes with the gear transmission rod (160).

2. The pharmaceutical mixing device with multiple stirring functions according to claim 1, characterized in that: The connecting plate (200) has a first guide hole (210) on one side, and the first guide holes (210) are arranged in sequence. A scraper (220) is fixedly connected to one side of the connecting plate (200). A second guide hole (221) is opened on one side of the scraper (220), and the second guide holes (221) are arranged from top to bottom.

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