A medicine bucket for a liquid medicine packaging machine and a liquid medicine packaging machine

Abstract

The utility model discloses a medicine liquid packing machine with medicine bucket and medicine liquid packing machine, the medicine liquid packing machine with medicine bucket is opened with the liquid -containing cavity and the arc -shaped groove of setting in the bottom of liquid -containing cavity, and the liquid inlet pipe is inserted into the liquid -containing cavity and is used for conveying the cleaning fluid, and the conical nozzle is arranged on the end of liquid inlet pipe, and the conical nozzle is arranged on the top of liquid -containing cavity and deviates from the central axis of arc -shaped groove, and the liquid outlet pipe is connected to the center of arc -shaped groove through the bottom of medicine bucket, and the water pump is arranged on the liquid outlet pipe, and the conical nozzle sprays the cleaning fluid into the liquid -containing cavity, and then the water pump is sucked to make the cleaning fluid rotate along the arc -shaped groove wall and generate vortex, to drive the medicine liquid residue attached to the bottom of medicine bucket to rotate, so that the medicine liquid residue falls off quickly and is discharged with the liquid flow, reduces the adhesion of part medicine liquid residue, through the eccentric design of conical nozzle and the curved surface flow guide characteristics of arc -shaped groove, the efficient cleaning of medicine bucket bottom area and the cleaning of residual material are realized, the cleaning effect is improved, and the secondary pollution risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of medicine barrel cleaning technology, and in particular to a medicine barrel for a medicine liquid packaging machine and a medicine liquid packaging machine. Background Technology

[0002] Currently, the traditional production process of Chinese medicine preparations involves several key steps, including decoction, filtration, dispensing, and packaging. Among these, the packaging stage is crucial for ensuring stable efficacy, improving production efficiency, and achieving standardization. With the continuous advancement of modernization in the Chinese medicine industry, automated packaging equipment is gradually replacing manual operation, becoming an indispensable basic equipment in the production of Chinese medicine preparations. Especially in the liquid dispensing stage after decocting Chinese medicinal herbs, Chinese medicine liquid packaging machines are widely used to achieve quantitative filling and sealing of the liquid, thereby improving production efficiency, reducing labor costs, and effectively controlling the risk of cross-contamination.

[0003] Existing Chinese herbal medicine packaging equipment generally includes structural units such as decoction tanks, filtration mechanisms, drug delivery pipelines, and packaging devices. During equipment operation, the decoction produced from the decoction of medicinal materials is filtered and then introduced into the packaging unit through the delivery pipeline to complete the subsequent quantitative dispensing and sealing processes. However, due to the wide variety of Chinese herbal medicines and their significant differences in physical form, and the fact that most herbs release fine dregs or mud during the decoction process, these residues are difficult to filter completely. In particular, the tiny particulate dregs easily settle with the decoction or adhere to the bottom and inner walls of the packaging machine's tank and equipment. This not only greatly increases the difficulty of cleaning but also makes it difficult to remove completely, affecting the cleanliness and hygiene of the equipment. It may also lead to a decline in the quality of the decoction, thus posing potential contamination risks and safety hazards for the next use.

[0004] In existing technologies, manual wiping or high-pressure water gun cleaning is typically used to remove residual medicinal powder and sludge from the bottom of the packaging to prevent cross-contamination between different batches of the medicine. However, this cleaning method is not only inefficient and increases the labor intensity of operators, but it may also introduce new sources of contamination during the cleaning process, affecting the hygiene and safety of the Chinese medicine solution. In addition, repeated disinfection and manual intervention increase equipment maintenance costs and fail to meet the requirements of modern Chinese medicine production for automation, cleanliness, and high efficiency. Therefore, existing Chinese medicine packaging machines still have significant shortcomings in cleaning bottom residue, and there is an urgent need to propose a new technical solution that can achieve automatic cleaning and reduce manual intervention. Utility Model Content

[0005] This utility model provides a medicine barrel for a medicine packaging machine and a medicine packaging machine, so as to solve the technical problems of low cleaning efficiency and easy secondary pollution of the medicine barrel in the existing medicine packaging machine.

[0006] To solve the above-mentioned technical problems, this utility model provides a medicine barrel for a medicine packaging machine, including a medicine barrel, an inlet pipe, a drain pipe, a water pump, and at least one conical nozzle. The medicine barrel has a liquid-containing cavity and an arc-shaped groove at the bottom of the liquid-containing cavity. The inlet pipe extends through the top of the medicine barrel into the liquid-containing cavity for conveying cleaning liquid. The conical nozzle is located at the end of the inlet pipe and is offset from the central axis of the arc-shaped groove at the top of the liquid-containing cavity. The drain pipe passes through the bottom of the medicine barrel and connects to the center of the arc-shaped groove. The water pump is located on the drain pipe. After the conical nozzle sprays the cleaning liquid into the liquid-containing cavity, the water pump draws it in to form a vortex in the arc-shaped groove.

[0007] Furthermore, the arc-shaped groove extends radially outward from the bottom center of the liquid-containing cavity to the inner wall of the liquid-containing cavity, and the connection between the inner wall of the arc-shaped groove and the inner wall of the liquid-containing cavity forms a smooth, continuous curved surface transition.

[0008] Furthermore, the arc-shaped groove has a uniform arc-shaped structure with a constant curvature; or, the arc of the arc-shaped groove gradually increases radially outward from the bottom center of the liquid-containing cavity.

[0009] Furthermore, the curvature of the arc groove is controlled within the range of 2° to 7°.

[0010] Furthermore, if the radius of the liquid-containing cavity is R and the spray angle of the conical nozzle is θ, then the range of the eccentricity e of the conical nozzle is controlled as: e = (1 + cosθ)·R.

[0011] Furthermore, the spray angle θ of the conical nozzle is controlled within the range of 90° to 150°.

[0012] Furthermore, the conical nozzle may be a solid conical nozzle or a hollow conical nozzle.

[0013] Furthermore, the flow rate of the conical nozzle is controlled within the range of 2L / min to 6L / min, and the injection pressure of the conical nozzle is controlled within the range of 0.25 to 0.55 MPa.

[0014] Furthermore, it also includes a liquid level detector disposed on the liquid-containing cavity and a first control valve disposed on the liquid inlet pipe. The liquid level detector is electrically connected to the first control valve and the water pump respectively. The liquid level detector is used to detect the liquid level height of the cleaning liquid in the arc-shaped groove, thereby controlling the opening and closing of the first control valve and the water pump.

[0015] On the other hand, this utility model also provides a medicine packaging machine, including a second control valve, a medicine delivery pipe and a medicine barrel as described in any of the preceding claims. The second control valve is disposed on the drain pipe and between the medicine barrel and the water pump. The medicine delivery pipe is connected to the second control valve. The second control valve is used to control the on / off state of the medicine delivery pipe and the drain pipe.

[0016] Compared with the prior art, the beneficial effects of this utility model embodiment of a medicine container for a medicine packaging machine and the medicine packaging machine are as follows:

[0017] This invention innovatively incorporates an eccentrically arranged conical nozzle within the medicine barrel of a pharmaceutical packaging machine, combined with a water pump connected to the drain pipe at the bottom of the barrel, creating a novel vortex cleaning structure. During cleaning, the cleaning fluid is delivered through the inlet pipe at the top of the barrel, sprayed at an angle into the liquid chamber via the conical nozzle, and gradually accumulates at the bottom of the arc-shaped groove. The suction of the water pump generates pressure at the bottom of the arc-shaped groove, causing the cleaning fluid to rotate along the groove wall and generate a vortex. This vortex causes the pharmaceutical residue adhering to the bottom of the barrel to rotate, resulting in rapid detachment and discharge with the liquid flow, reducing the adhesion of some residue. The eccentric nozzle design, combined with the curved surface guiding characteristics of the arc-shaped groove, significantly improves the coverage and impact strength of the cleaning fluid, achieving efficient cleaning and residue removal at the bottom of the barrel. This avoids the risk of secondary contamination due to dead-angle accumulation, improves the consistency of cleaning effect and hygiene safety, and achieves dynamic cleaning and directional drainage within a limited space, reducing equipment manufacturing costs and system complexity. In summary, this utility model, by constructing a synergistic cleaning system combining eccentric spraying, arc-shaped channeling, and suction vortex generation, not only solves the key technical problems of traditional pharmaceutical packaging equipment, such as numerous cleaning blind spots, low efficiency, and high pollution risk, from a structural perspective, making the cleaning process more uniform, efficient, and environmentally friendly, but also significantly improves the overall hygiene and safety level and ease of maintenance of the packaging equipment without increasing the size of the equipment or the difficulty of operation. It provides stable and reliable technical support for the pharmaceutical packaging machine industry to develop towards higher cleanliness and intelligence, greatly saving manpower and resources, and has a wide range of application scenarios.

[0018] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0019] The accompanying drawings are provided for a better understanding of this solution and do not constitute a limitation on this utility model. Wherein:

[0020] Figure 1 This is a schematic diagram of the structure of a medicine barrel for a liquid medicine packaging machine provided in this embodiment of the utility model at one angle;

[0021] Figure 2 This is a schematic diagram of the structure of the medicine barrel for the medicine packaging machine provided in this embodiment of the utility model from another angle;

[0022] Figure 3 yes Figure 2 A schematic diagram of the cross-section along the AA direction.

[0023] In the diagram, 10 is a medicine container for a liquid medicine packaging machine; 11 is a medicine container; 111 is a liquid-containing chamber; 112 is an arc-shaped groove; 12 is an inlet pipe; 13 is a conical nozzle; 14 is a drain pipe; 15 is a water pump; 16 is a first control valve; 17 is a second control valve; 18 is a medicine delivery pipe; and 19 is a liquid level detector. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings and 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 scope of protection of the present utility model.

[0025] In the description of this utility model, it should be noted that the directional terms such as "middle", "upper", "lower", "inner", "outer", "vertical", "lateral", "vertical", and "horizontal" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. They should not be construed as limiting the specific protection scope of this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0027] In this utility model, the terms "installation," "setting," "connection," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly defined. Indications of orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or component 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 application. "A plurality" means two or more, unless otherwise explicitly defined. "Several" means one or more, unless otherwise explicitly defined.

[0028] like Figure 1-3 As shown, this utility model embodiment provides a medicine barrel 10 for a medicine packaging machine, including a medicine barrel 11, an inlet pipe 12, an outlet pipe 14, a water pump 15, and at least one conical nozzle 13. The medicine barrel 11 has a liquid-containing cavity 111 and an arc-shaped groove 112 at the bottom of the liquid-containing cavity 111. The inlet pipe 12 extends through the top of the medicine barrel 11 into the liquid-containing cavity 111 for conveying cleaning liquid. The conical nozzle 13 is located at the end of the inlet pipe 12 and is located at the top of the liquid-containing cavity 111, offset from the central axis of the arc-shaped groove 112. The outlet pipe 14 passes through the bottom of the medicine barrel 11 and connects to the center of the arc-shaped groove 112. The water pump 15 is located on the outlet pipe 14. After the conical nozzle 13 sprays the cleaning liquid into the liquid-containing cavity 111, the water pump 15 draws it in so that the cleaning liquid forms a vortex in the arc-shaped groove 112.

[0029] This invention innovatively incorporates an eccentrically arranged conical nozzle 13 within the medicine barrel 11 of the medicine packaging machine, combined with a water pump 15 connected to the drain pipe 14 at the bottom of the medicine barrel 11, thus constructing a novel vortex cleaning structure. During cleaning, the cleaning fluid is transported through the inlet pipe 12 at the top of the medicine barrel 11, and after being sprayed at an angle into the liquid-containing chamber 111 via the conical nozzle 13, it gradually accumulates at the bottom of the arc-shaped groove 112. Under the suction of the water pump 15, pressure is created within the arc-shaped groove 112, causing the cleaning fluid to rotate along the wall of the arc-shaped groove 112. The system generates eddies to rotate the medicine residue adhering to the bottom of the medicine tank 11, causing the medicine residue to fall off quickly and be discharged with the liquid flow, reducing the adhesion of some medicine residue. Through the eccentric nozzle design and the curved surface guiding characteristics of the arc groove 112, the coverage and impact intensity of the cleaning liquid are significantly improved, achieving efficient cleaning and residue removal in the bottom area of ​​the medicine tank 11. This avoids the risk of secondary pollution caused by dead corner accumulation, improves the consistency of cleaning effect and hygiene safety, and achieves dynamic cleaning and directional diversion in a limited space, reducing equipment manufacturing costs and system complexity. In summary, this utility model, by constructing a synergistic cleaning system that combines eccentric spraying with arc-shaped grooves 112 for guiding flow and suction to create a vortex, not only solves the key technical problems of traditional pharmaceutical packaging equipment, such as numerous cleaning blind spots, low efficiency, and high pollution risks, from a structural perspective, making the cleaning process more uniform, efficient, and environmentally friendly, but also significantly improves the overall hygiene and safety level and ease of maintenance of the packaging equipment without increasing the size of the equipment or the difficulty of operation. It provides stable and reliable technical support for the pharmaceutical packaging machine industry to develop towards higher levels of cleanliness and intelligence, greatly saving manpower and resources, and has a wide range of application scenarios.

[0030] The conical nozzle 13 is primarily chosen for its superior hydrodynamic characteristics and spraying effect. The conical nozzle 13 can evenly distribute the cleaning fluid in a conical jet stream, expanding the spray coverage area and increasing the impact and shear forces within the spray area, thereby enhancing the flushing ability against stubborn residues on the inner wall and bottom of the liquid container 111. Simultaneously, the structure of the conical nozzle 13 helps to form a stable and directionally controllable jet stream, allowing the cleaning fluid to act more precisely on key parts inside the medicine container 11, avoiding blind spots and flow rate attenuation, and improving overall cleaning efficiency. Furthermore, the eccentric arrangement of the conical nozzle 13, combined with the flow-guiding design of the arc-shaped groove 112, effectively promotes the formation of a rotating vortex within the liquid container 111, achieving efficient desorption and discharge of residues, meeting the stringent requirements of medicine packaging machines for high cleanliness and efficient cleaning. Therefore, the conical nozzle 13 is a crucial structural choice for achieving the efficient, uniform, and reliable cleaning effect of this utility model's cleaning system.

[0031] The conical nozzle 13 is eccentrically positioned at the top of the liquid-containing cavity 111, causing the ejected cleaning fluid stream to be significantly deflected towards one side wall of the cavity 111, thus generating a strong lateral impact force. This eccentric spray not only breaks the symmetrical flow state of the liquid within the cavity 111, creating a significant velocity and pressure gradient, but also causes the cleaning fluid to flow obliquely along the side wall of the cavity 111, driving the liquid to deflect in a certain direction and enhancing the asymmetry and dynamic complexity of the flow field. Simultaneously, the arc-shaped groove 112 at the bottom of the medicine tank 11, with its unique curved guiding characteristics, cleverly guides the fluid to flow smoothly along the groove wall in an arc direction, greatly enhancing the rotational tendency of the liquid and providing an ideal path for the formation of vortices. Combined with the water pump 15 installed on the drain pipe 14, the continuous suction creates a pressure zone at the bottom of the arc-shaped groove 112, promoting the continuous extraction of liquid and causing the cleaning fluid to rotate at high speed within a limited space, ultimately forming a stable and powerful vortex. This vortex not only significantly enhances the contact and shearing force between the cleaning fluid and the inner wall of the medicine tank 11 and the deposited residue, effectively removing stubborn dirt, but also facilitates the smooth discharge of residue with the liquid flow, greatly improving the thoroughness and efficiency of cleaning. In summary, the lateral impact force of the eccentric conical nozzle 13, the curved surface guiding effect of the arc-shaped groove 112, and the pressure suction of the water pump 15 work in close coordination to construct a highly efficient and stable vortex power system. This achieves uniform distribution and dynamic circulation of the cleaning fluid inside the medicine tank 11, ensuring the efficiency and comprehensiveness of the cleaning process and meeting the stringent cleaning quality requirements of the medicine packaging machine.

[0032] When multiple conical nozzles 13 are installed, all nozzles are offset from the central axis of the arc-shaped groove 112, installed on the top of the liquid-containing chamber 111, and uniformly distributed along the circumference of the arc-shaped groove 112. Each conical nozzle 13 sprays the cleaning fluid at a specific angle, effectively avoiding cross-interference between the sprayed fluid streams, thereby significantly improving the uniformity of the cleaning fluid coverage and the overall cleaning effect. It is preferable to configure 2 to 3 conical nozzles 13. This number can fully meet the comprehensive cleaning needs inside the medicine tank 11, while avoiding the increase in structural complexity and fluid flow interference caused by too many nozzles, ensuring the stability and efficiency of the system operation.

[0033] It should be noted that although the conical nozzle 13 generates complex flow within the liquid-containing chamber 111 through multi-directional spraying, the vortex is easily affected by interference from water flow in different directions or obstruction from the accumulation of liquid residue, leading to unstable vortex formation or insufficient flow velocity, thus affecting the cleaning effect. The water pump 15, by generating strong pressure through the drain pipe 14, actively draws liquid from the bottom of the arc-shaped groove 112, strengthening and stabilizing the formation of the vortex. This allows the fluid to flow continuously and powerfully in a predetermined direction; as long as an oblique flow is formed, it can be driven by suction to generate a stable rotating vortex. This pressure suction not only overcomes the effects of turbulent flow and residue obstruction but also accelerates liquid circulation and residue removal, improving the strength and stability of the vortex and ensuring thorough and uniform cleaning of the bottom of the liquid-containing chamber 11. Therefore, the role of the water pump 15 is to ensure the stable existence of the vortex formed by the combination of eccentric spraying and the flow guidance of the arc-shaped groove 112 under various working conditions, thus achieving efficient dynamic cleaning.

[0034] like Figure 3 As shown, in an optional embodiment of the present invention, the arc-shaped groove 112 extends radially outward from the bottom center of the liquid-containing cavity 111 to the inner wall of the liquid-containing cavity 111, and the connection between the inner wall of the arc-shaped groove 112 and the inner wall of the liquid-containing cavity 111 forms a smooth continuous curved surface transition.

[0035] Specifically, the arc-shaped groove 112 extends radially outward from the bottom center of the liquid-containing chamber 111 to the inner wall of the chamber, ensuring that the cleaning fluid can flow smoothly from the center of the groove to the periphery. This promotes a uniform and stable swirling flow of the liquid within the groove, effectively causing deposited chemical residues to detach and be discharged promptly, preventing accumulation in dead corners and improving cleaning efficiency and thoroughness. Simultaneously, the groove design rationally distributes fluid dynamics, reducing flow resistance and turbulence generation, thus improving the flow stability and operational reliability of the entire cleaning system.

[0036] Furthermore, the connection between the inner wall of the arc-shaped groove 112 and the inner wall of the liquid-containing cavity 111 forms a smooth and continuous curved surface transition structure, effectively avoiding sudden changes in liquid flow and the generation of turbulence, reducing dead angles and stagnant areas of liquid at the connection between the groove wall and the cavity wall, and ensuring that the cleaning liquid can flow smoothly and uniformly. Secondly, the radially gradually extending shape of the arc-shaped groove 112 optimizes the liquid guiding path, helping to guide the cleaning liquid to generate stable rotating vortices along the groove wall, improving the intensity and stability of the vortex, thereby enhancing the ability to flush and peel off residues attached to the bottom and side walls of the medicine tank 11. Thirdly, the smoothly transitioning curved surface structure reduces local stress concentration and mechanical wear, improving the durability and service life of the device. In summary, this arc-shaped groove 112 design not only optimizes the fluid dynamics characteristics and improves cleaning efficiency and uniformity, but also ensures the stability and long-term reliability of the system operation, significantly improving the overall performance of the medicine packaging machine cleaning.

[0037] like Figure 3 As shown, in an optional embodiment of the present invention, the arc groove 112 has a uniform arc structure with constant curvature; or, the curvature of the arc groove 112 gradually increases radially outward from the bottom center of the self-contained liquid cavity 111.

[0038] Specifically, the constant curvature arc-shaped groove 112 refers to a groove whose curvature remains consistent throughout the entire radial direction, forming a uniform and symmetrical arc-shaped surface structure. This structural design possesses excellent flow guiding characteristics in fluid dynamics, making the movement trajectory of the cleaning fluid within the groove more uniform, continuous, and predictable. When the cleaning fluid is injected into the liquid-containing cavity 111 through the top conical nozzle 13, some of the liquid naturally flows into the arc-shaped groove 112 under the action of eccentric injection and gravity. The constant arc surface guides the liquid flow to flow stably along the groove wall, and under the pressure of the pump 15, a continuous and uniform rotating vortex is generated. By maintaining a constant curvature of the groove wall, the pressure distribution and velocity gradient of the cleaning fluid during the flow process are ensured to be relatively balanced, avoiding turbulence and flow disturbance caused by geometrical abrupt changes, thereby effectively reducing dead corners and residual liquid retention within the groove. Driven by this regular vortex, the cleaning fluid achieves extensive contact and uniform flushing with the residue deposited at the bottom of the medicine tank 11, improving the overall entrainment capacity and cleaning coverage.

[0039] The variable curvature design makes the arc-shaped groove 112 relatively gentle in the central area, while it becomes steeper closer to the inner wall of the liquid cavity 111. That is, the curvature of the central area of ​​the arc-shaped groove 112 is small and the groove surface is relatively gentle, while extending outward towards the inner wall of the liquid cavity 111, the groove gradually becomes curved and steep, forming a structural feature with gradually increasing curvature. Its essence is an asymmetric dynamic flow guiding structure, which aims to enhance the acceleration and rotation tendency of the liquid flow in the radial direction by means of geometric gradient characteristics. Taking advantage of the tendency of the cleaning liquid to flow obliquely into the arc-shaped groove 112 along the side wall under eccentric spray, the liquid is gradually guided to expand at high speed from the edge to the center through the gentle-to-steep curvature transition, thereby enhancing the centrifugal force distribution during the rotation process. With the continuous pressure suction force generated by the water pump 15 at the drain end, the liquid is forced to rotate at high speed along the arc path, forming a stronger spiral vortex, which exerts a strong shearing and scouring effect on the deposits on the edge of the liquid cavity 111 and the bottom of the groove. This structural design effectively enhances the flushing and desorption of residues along the tank edge, making it particularly suitable for scenarios where the initial impact force of the cleaning fluid is limited but enhanced rotational peeling capability is required. Simultaneously, this structure also improves the stability of the vortex within the arc-shaped tank 112, enabling the cleaning process to be completed more efficiently in a shorter time.

[0040] In an optional embodiment of this utility model, the curvature range of the arc groove 112 is controlled between 2° and 7°.

[0041] To further optimize the flow path and rotation effect of the cleaning fluid within the arc-shaped groove 112, this invention limits the curvature of the arc-shaped groove 112 to between 2° and 7°. This curvature design ensures smooth sliding of the cleaning fluid along the groove wall, facilitating the formation of a stable rotating vortex, while avoiding processing difficulties and fluid disturbances caused by excessive curvature of the groove. This achieves a good balance between cleaning efficiency, structural controllability, and manufacturing feasibility. Specifically, when the curvature is too small (e.g., below 2°), the bottom arc surface tends to be flat, and the guiding effect of the liquid within the groove is not significant, resulting in reduced fluidity and weak rotation, making it easy for residue to accumulate and be difficult to flush, thus affecting the thoroughness of cleaning. Conversely, when the curvature is too large (e.g., exceeding 7°), the local curvature of the arc-shaped groove 112 changes drastically, not only increasing processing difficulty and structural stability but also creating unnecessary disturbances and dead zones in the liquid flow path, which is detrimental to the formation of a stable vortex.

[0042] For example, taking the same eccentric conical nozzle 13 as an example, the nozzle sprays cleaning fluid at a constant pressure (0.3MPa). After spraying for 5 seconds, the water pump 15 is started for suction. Multiple tests were conducted on the time required for the arc groove 112 with different curvatures to form a stable rotating vortex under this working condition, and different effects were obtained: With a curvature of 2°, the vortex formation time is relatively long, about 2.5 seconds. The initial liquid flow slowly gathers, the rotation path is not obvious, and the liquid flow tends to deposit downwards. With a curvature of 3°, the vortex forms rapidly, and the rotational closed path can be completed within about 1 second. The liquid forms a clear spiral rotation trend in the arc groove 112, and the cleaning effect is the best. With a curvature of 4°, the vortex formation time is about 1.8 seconds. The rotating flow is relatively strong, but there is a slight dispersion of the water flow at the edge, and there are occasional slight disturbances. With a curvature of 7°, the vortex formation time mostly exceeds 2.5 seconds. The flow path is unstable, the vortex center drifts seriously, and the liquid flow may become turbulent, affecting the control accuracy and efficiency of the cleaning fluid.

[0043] In an optional embodiment of this utility model, the radius of the liquid-containing cavity 111 is R, and the spray angle of the conical nozzle 13 is θ. Then, the range of the eccentricity e of the conical nozzle 13 is controlled as: e = (1 + cosθ)·R

[0044] Specifically, by controlling the eccentric distance e of the conical nozzle 13 within the range of e = (1 + cosθ)·R (where R represents the radius of the liquid-containing cavity 111 and θ represents the spray angle of the conical nozzle 13), a precise balance can be achieved between the spray coverage area and the lateral impact force, thereby significantly improving cleaning efficiency and uniformity. This limitation of the eccentric distance, based on the jet geometry and fluid dynamics principles, ensures that the jet stream can cover the core and edge areas at the bottom of the liquid-containing cavity 111, avoiding blind spots, while also enhancing the impact force of the liquid stream on the inner wall of the cavity at the eccentric position, effectively stimulating the formation of rotating vortices and improving the peeling and entrainment capabilities of deposited residues.

[0045] Cosθ reflects the influence of the injection angle on the jet diffusion characteristics: when the injection angle is small, the jet is more concentrated, making a larger eccentric distance suitable. The eccentric conical nozzle 13 can more forcefully and obliquely project the conical liquid flow towards one side wall of the liquid cavity 111, generating a strong lateral impact and pushing the cleaning liquid to form a stable and concentrated rotating flow structure along the wall. However, when the injection angle is large, the jet itself has a wider diffusion range. To avoid the liquid deviating excessively from the central area and being concentrated at the edge of the liquid cavity 111, resulting in flow voids or incomplete coverage, the eccentric distance needs to be reduced accordingly. This ensures that the liquid flow can still effectively hit the key area at the bottom of the liquid cavity 111, thereby forming a stable and controllable spiral rotating flow field. This eccentric distance control formula provides a scientific basis for the rational arrangement of the conical nozzle 13, ensuring that the jet liquid flow can achieve both efficient coverage and generate strong lateral flow. It is a key design parameter for achieving efficient, uniform, and stable cleaning.

[0046] In an optional embodiment of this invention, the spray angle θ of the conical nozzle 13 is controlled within the range of 90° to 150°.

[0047] Specifically, the spray angle θ of the conical nozzle 13 is controlled between 90° and 150°, achieving a good balance between spray coverage and impact force, thus improving cleaning efficiency and uniformity. If the angle is too small, the spray flow is too concentrated, resulting in limited coverage and the potential for creating localized cleaning dead zones; if the angle is too large, the spray flow is too dispersed, weakening the impact force and reducing the cleaning effect. The range of 90° to 150° ensures that the spray flow can cover the key areas of the bottom and sidewalls of the liquid-containing cavity 111, while also ensuring sufficient impact force to generate rotating vortices and promote the effective removal of chemical residues.

[0048] Using the formula for calculating eccentricity: e = (1 + cosθ)·R, the maximum eccentricity e of the nozzle is determined based on different injection angles to ensure that the jet stream effectively covers the target area and avoids liquid flow deviation or blind spots. A conical nozzle 13 with an injection angle of 120° is preferred. The following are the calculation results for different angles (assuming the radius R of the liquid chamber 111 is 30cm): When θ = 90°, the eccentricity e is 30cm; when θ = 110°, the eccentricity e is 19.74cm; when θ = 120°, the eccentricity e is 15cm; when θ = 130°, the eccentricity e is 10.67cm; when θ = 150°, the eccentricity e is 4.02cm. It can be seen that as the injection angle increases, the maximum allowable eccentricity decreases significantly. This indicates that at larger injection angles, the nozzle needs to be positioned closer to the center of the liquid chamber 111 to avoid excessive jet flow deviation that would affect the coverage area. When the angle is 120°, the eccentricity is 15mm, which balances the breadth of the spray coverage and the intensity of the impact force. This is conducive to forming a stable and efficient vortex, improving the overall cleaning effect, and is easy to set.

[0049] In an optional embodiment of this utility model, the conical nozzle 13 is either a solid conical nozzle 13 or a hollow conical nozzle 13.

[0050] Specifically, the conical nozzle 13 can be either a solid conical nozzle 13 or a hollow conical nozzle 13, depending on the actual cleaning requirements, to balance the cleaning intensity and flow field distribution characteristics of different areas and improve the overall cleaning effect. The hollow conical nozzle 13 sprays the cleaning fluid in a hollow, annular conical jet, forming an enveloping rinsing ring with a larger radial coverage area, suitable for cleaning larger areas such as the bottom edge of the cleaning tank 11 or the inner wall of the cavity. Especially when the nozzle is eccentrically arranged, the hollow conical jet can more effectively guide the liquid flow direction within the liquid-containing cavity 111, enhancing the oblique impact force, further stimulating the formation and maintenance of the vortex structure, and improving the cleaning uniformity and residue entrainment capacity of the surrounding area.

[0051] The solid conical nozzle 13 sprays the cleaning fluid in a continuous, dense, conical solid jet. Its high central velocity and strong impact force make it suitable for concentrated rinsing of the central area at the bottom of the tank 11 or stubborn residues with strong adhesion. This nozzle structure enhances local shear force and liquid kinetic energy, improving the removal efficiency of bottom residues and ensuring deep cleaning and high cleanliness in critical areas. Preferably, the solid conical nozzle 13 achieves higher impact intensity and fluid concentration within a limited space. Combined with the flow guidance of the arc-shaped groove 112 and the pressure suction mechanism of the water pump 15, it effectively drives the establishment of a rotating vortex while ensuring the cleaning effect in the core area. This is an important structural choice for this invention in meeting the requirements of high cleanliness and high efficiency cleaning. Furthermore, for complex working conditions or specific residue distribution characteristics, the two types of nozzles can be flexibly combined for multi-directional and multi-layered cleaning arrangements, further improving system adaptability and cleaning performance.

[0052] It should be noted that in some applications of medicine tanks 11 with smaller structural dimensions or more concentrated cleaning areas, fan-shaped nozzles can also be used as an alternative. Fan-shaped nozzles can spray the cleaning fluid in a flat, distributed stream along a fixed direction, offering advantages such as simple structure, high spraying efficiency, and concentrated liquid flow coverage. They are suitable for small cavities with limited cleaning area and concentrated residue distribution. However, for medicine tanks 11 with larger liquid chamber volumes or complex bottom profiles, fan-shaped nozzles have certain limitations in terms of spatial coverage and multi-directional cleaning effect. Their unidirectional flat stream can easily create a "cleaning blind spot" at the bottom of the cavity, far from the spray direction. Especially without sufficient rotation or multi-nozzle compensation, this can lead to some medicine residue remaining, affecting overall cleaning consistency and even causing secondary contamination risks. Therefore, fan-shaped nozzles are not suitable for medium and large medicine barrels 11. Conical nozzles 13 (preferably solid conical nozzles 13) are recommended instead. Combined with eccentric arrangement, arc groove 112 for flow guidance and vortex excitation structure of water pump 15, the cleaning liquid is guaranteed to form a stable full-area rotating flow field in the liquid chamber 111. This can meet the usage requirements of medicine barrels 11 used in most medicine packaging machines, thereby achieving a comprehensive and efficient cleaning effect.

[0053] In an optional embodiment of this utility model, the flow rate of the conical nozzle 13 is controlled within the range of 2L / min to 6L / min, and the injection pressure of the conical nozzle 13 is controlled within the range of 0.25 to 0.55 MPa.

[0054] Specifically, the spray pressure range of the conical nozzle 13 is controlled between 0.25 MPa and 0.55 MPa to balance the cleaning fluid flow rate, impact intensity, and system operational stability. This parameter setting fully considers the working environment of the cleaning system and the adhesion characteristics of residues inside the chemical tank 11. The pressure range of 0.25–0.55 MPa basically covers commonly used pipeline pressures, enabling stable fluid supply without a high-pressure pump, thus improving the system's practicality and versatility. Taking a conical nozzle with a spray angle of 120° as an example, with a suitable orifice diameter, the spray flow rate can be stably controlled at approximately 3.5 L / min. Under this pressure and flow rate combination, a cleaning fluid distribution with wide coverage, moderate impact force, and good shearing effect can be achieved.

[0055] If the nozzle orifice diameter is too small, the amount of liquid sprayed per unit time will be insufficient, making it impossible to quickly clean the chemical residue, especially in scenarios with viscous solutions or a large amount of crystalline deposits, where thorough removal is difficult. Conversely, if the orifice diameter is too large, although the flow rate increases, it will significantly weaken the jet impact force, reduce the ability to scour and peel off attached residues, and may even cause the liquid flow to "passivate," failing to generate effective eddies. By controlling the nozzle to operate within the aforementioned pressure and flow rate parameters, not only can sufficient kinetic energy and coverage of the cleaning fluid be ensured, but it can also adapt to the structural dimensions and residue conditions of different types of chemical tanks 11, improving cleaning efficiency and consistency. At the same time, this parameter range also has good system adaptability, allowing direct use with conventional water supply systems, reducing operating energy consumption and equipment complexity, and improving the convenience of product promotion and industrial application.

[0056] In an optional embodiment of this utility model, a liquid level detector 19 is provided on the liquid chamber 111 and a first control valve 16 is provided on the liquid inlet pipe 12. The liquid level detector 19 is electrically connected to the first control valve 16 and the water pump 15 respectively. The liquid level detector 19 is used to detect the liquid level height of the cleaning liquid in the arc-shaped groove 112, thereby controlling the opening and closing of the first control valve 16 and the water pump 15.

[0057] Specifically, in the actual cleaning process, if the water pump 15 starts prematurely before the cleaning fluid has accumulated in the liquid chamber 111 to form an effective liquid level, it is very easy for the water pump 15 to run dry and pump air, causing a dry pumping phenomenon. This may not only lead to dry wear damage to the pump body and seal failure, but also prevent the effective activation of the vortex structure due to insufficient pressure, thereby severely weakening the cleaning effect and even causing overall system malfunction. To this end, this utility model preferably sets up a liquid level detector 19 to sense the liquid level change of the cleaning fluid at the bottom of the arc-shaped tank 112 in real time, and to control the opening and closing status of the first control valve 16 on the inlet pipe 12 and the water pump 15 on the outlet pipe 14 in conjunction, so as to realize intelligent coordinated control of the cleaning process.

[0058] Specifically, upon startup, the system first opens the first control valve 16, allowing cleaning fluid to be injected through the inlet pipe 12 and sprayed into the liquid-containing chamber 111 by the eccentrically arranged conical nozzle 13 at the top, providing initial rinsing to the walls and bottom of the tank 11. As cleaning fluid gradually accumulates at the bottom of the arc-shaped tank 112 to the set level, the level detector 19 detects that the signal has reached the startup threshold, automatically triggering the water pump 15 to start suction. Under sufficient liquid conditions, this generates stable pressure, creating a continuously rotating cleaning vortex within the arc-shaped tank 112. After a period of operation, the level detector 19 closes the first control valve 16 and the drain pipe 14 according to a preset time threshold, achieving the requirement of immediate operation when needed and immediate shutdown when not required.

[0059] The liquid level detector 19 used can be flexibly selected according to the specific characteristics of the cleaning fluid and the control accuracy requirements. For example, a capacitive liquid level sensor determines the liquid level by detecting the effect of the liquid surface on the capacitance value, which has the advantages of fast response and strong adaptability. It can be installed on the side wall of the arc-shaped tank 112, and is especially suitable for cleaning environments containing viscous or corrosive liquids. An ultrasonic liquid level sensor accurately measures the liquid level height by the reflection time, which has the ability of non-contact and continuous detection. It is suitable for systems with a high degree of automation and frequent liquid level fluctuations, and can be installed on the wall of the liquid chamber 111. A photoelectric liquid level switch has a compact structure and sensitive response, and is especially suitable for transparent liquid systems with limited installation space. It can be installed on the wall of the liquid chamber 111. A pressure liquid level transmitter can calculate the liquid level height by the hydrostatic pressure of the liquid column. It can be installed in the liquid chamber 111 and is suitable for scenarios with stable density and requiring precise start-up timing. It can also be seamlessly linked with control systems such as PLCs to help the system achieve refined cleaning management. Through this timing design combining liquid level sensing and linkage control, the system effectively avoids the risk of dry pumping caused by premature operation of the water pump 15, ensuring the integrity of vortex formation and consistency of cleaning efficiency. Simultaneously, it significantly reduces reliance on manual operation and monitoring, improving the automation level, operational safety, and controllability of the cleaning system. This makes it more suitable for batch-production, streamlined pharmaceutical packaging environments, helping companies achieve high cleanliness and high stability cleaning requirements.

[0060] On the other hand, the present invention also provides a medicine packaging machine (not shown in the figure), including the medicine tank 11 as described in any of the preceding claims, and further including a second control valve 17 and a medicine delivery pipe 18. The second control valve 17 is disposed on the drain pipe 14 and between the medicine tank 11 and the water pump 15. The medicine delivery pipe 18 is connected to the second control valve 17 and is used to control the selection of the discharge path of the cleaning liquid or medicine. The second control valve 17 is used to control the opening and closing of the medicine delivery pipe 18 and the drain pipe 14.

[0061] During the packaging process, the second control valve 17 closes the drain pipe 14 leading to the water pump 15 and opens the delivery pipe 18, ensuring the smooth and safe delivery of the medicine to the packaging stage and guaranteeing the continuity and stability of the packaging operation. During the cleaning stage, the second control valve 17 closes the delivery pipe 18 and switches to open the drain channel connected to the water pump 15, causing the cleaning fluid to form a pressure vortex under the action of the water pump 15, efficiently flushing every corner inside the medicine tank 11 and thoroughly removing residual medicine and impurities. This flexible switching design of the valve enables automatic switching between the packaging and cleaning functions, simplifying the operation process, improving the ease of use of the equipment, and greatly improving the overall operating efficiency and safety of the system, providing solid technical support for the efficient production and hygiene assurance of the medicine packaging machine.

[0062] To meet the stringent requirements of efficiency and precision in automated pharmaceutical manufacturing processes, this invention incorporates a rotating mechanism. This rotating mechanism is fixedly mounted on the outer wall of the medicine container 11 and primarily consists of a support frame, a driver (preferably a stepper motor or servo motor), and a transmission shaft. The support frame is securely fixed to the outer wall of the medicine container 11, providing robust support for the water delivery pipe and the conical nozzle 13. The driver is mounted on the support frame, and its output shaft is connected to the transmission shaft, driving the transmission shaft to rotate. This, in turn, causes the water delivery pipe and the conical nozzle 13, connected to the transmission shaft, to rotate precisely around the medicine container 11, allowing the water delivery pipe to enter or exit the liquid-containing cavity 111, which typically has an open top.

[0063] This rotating mechanism, through controllable rotational motion combined with an automated program to adjust the position and angle of the nozzle, ensures that the cleaning fluid evenly covers the inner wall of the liquid-containing chamber 111, effectively avoiding cleaning dead zones and blind spots, and significantly improving cleaning efficiency and quality. Simultaneously, when the robotic arm precisely pours the decocted medicine into the open liquid-containing chamber 111, the rotating mechanism can flexibly adjust the position of the water supply pipe and the nozzle, avoiding mechanical interference and obstruction, ensuring a smooth and safe feeding process, thereby improving the operational stability and production continuity of the automated pharmaceutical equipment.

[0064] Furthermore, this structural design enables the water delivery pipe and conical nozzle 13 to achieve fixed-point positioning and continuous rotation according to a preset motion trajectory, dynamically adjusting the spray angle and position to ensure that the cleaning fluid covers every minute area of ​​the liquid-containing chamber 111, completely eliminating cleaning dead zones. The drive system uses a high-precision stepper motor or servo motor to achieve precise angle control and flexible programmable operation, meeting diverse cleaning mode requirements. Overall, this rotating mechanism, with its scientifically sound structural layout and efficient and stable drive control, provides a solid and reliable technical guarantee for the automated operation of the pharmaceutical packaging machine.

[0065] In summary, this utility model provides a medicine tank 10 for a medicine packaging machine and a medicine packaging machine, suitable for applications such as pharmaceutical companies, medical device production workshops, and biological reagent filling equipment for efficient cleaning of medicine tanks. This device is particularly suitable for industrial environments with high cleaning frequency, strict hygiene standards, and fast operating pace, effectively meeting relevant cleanliness requirements, avoiding cross-contamination of medicines, and ensuring the safety and standardization of the drug production process. Through optimized structural design and intelligent control of the cleaning process, this device provides a simple, efficient, compact, and stable cleaning solution. Its main feature is the combination of an eccentrically arranged conical nozzle 13 and a bottom arc-shaped groove 112 guiding structure, which, under the suction of the water pump 15, forms a ring-shaped vortex, significantly improving the cleaning coverage and the impact efficiency of the cleaning liquid. The actual working process of effectively rinsing the dead corners at the bottom of the medicine tank 11 and removing residue is as follows:

[0066] First, when the medicine barrel 11 used in the packaging machine needs to be cleaned, the control system closes the second control valve 17, cuts off the passage on one side of the medicine delivery pipe 18, and simultaneously opens the passage on the side connected to the water pump 15. Then, the water pump 15 is started for the first time to quickly suck out the residual medicine in the medicine barrel 11, laying the foundation for subsequent cleaning steps. Second, after the residual liquid is drained, the water pump 15 is turned off and the first control valve 16 is opened. The cleaning liquid is delivered from the inlet pipe 12 to the conical nozzle 13 located at the top of the medicine barrel 11 and sprayed into the liquid chamber 111 at a certain angle and high speed. Because the nozzle is eccentrically arranged, the sprayed liquid can more fully cover different areas of the chamber and disperse the residual liquid adhering to the barrel wall. After a period of spraying, when the liquid level detector 19 detects that the cleaning liquid in the arc-shaped groove 112 has accumulated to the set liquid level height, the liquid level detector 19 controls the water pump 15 to be started for the second time for suction. At this time, under the combined action of jetting power and suction pressure, the cleaning fluid gradually converges in the arc-shaped groove 112 at the bottom of the medicine tank 11. Driven by the pressure generated by the water pump 15, the walls of the arc-shaped groove 112 guide the liquid to rotate and flow along the arc-shaped channel, thereby forming a stable annular vortex at the bottom of the groove. This vortex flow field can exert a continuous rotating scouring effect on the stubborn medicine residue adhering to the bottom of the tank, accelerating its peeling and carrying it out of the drain pipe 14 along with the cleaning fluid. Through the above process, the device achieves directional scouring, dynamic cleaning, and rapid drainage of the bottom of the medicine tank 11 and the area at the bottom of the groove, effectively solving problems such as incomplete coverage and dead-angle residue in traditional cleaning methods.

[0067] It should be noted that the cleaning solution used in this cleaning device is typically clean water. Its main function is to rinse the inner wall and bottom of the medicine tank 11, removing residual medicine and impurities. It is suitable for daily quick cleaning and routine maintenance. In applications requiring higher cleanliness or where there is strong adhesion of medicine residue, cleaning agents or disinfectants can be added to the clean water as needed. These can include neutral surfactants, low-concentration alkaline cleaning solutions, or food / pharmaceutical grade disinfectants to enhance the removal and elimination of stains, medicine residue, and microorganisms from the tank walls. This flexible cleaning solution configuration not only helps improve the cleaning effect but also allows for adjustments based on different medicine types, contamination levels, and hygiene standards, enhancing the adaptability and application breadth of the device and meeting the cleaning standards of different process stages in pharmaceutical companies.

[0068] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit the scope of protection of this utility model. In particular, it should be noted that any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model by those skilled in the art should be included within the scope of protection of this utility model.

Claims

1. A medicine barrel for a liquid medicine packaging machine, characterized in that, The device includes a medicine tank, an inlet pipe, an outlet pipe, a water pump, and at least one conical nozzle. The medicine tank has a liquid-containing cavity and an arc-shaped groove at the bottom of the liquid-containing cavity. The inlet pipe extends through the top of the medicine tank into the liquid-containing cavity to deliver cleaning fluid. The conical nozzle is located at the end of the inlet pipe and is offset from the central axis of the arc-shaped groove at the top of the liquid-containing cavity. The outlet pipe passes through the bottom of the medicine tank and connects to the center of the arc-shaped groove. The water pump is located on the outlet pipe. After the conical nozzle sprays the cleaning fluid into the liquid-containing cavity, the water pump draws it in to create a vortex in the arc-shaped groove.

2. The medicine barrel for a liquid medicine packaging machine according to claim 1, characterized in that, The arc-shaped groove extends radially outward from the bottom center of the liquid-containing cavity to the inner wall of the liquid-containing cavity, and the connection between the inner wall of the arc-shaped groove and the inner wall of the liquid-containing cavity forms a smooth, continuous curved surface transition.

3. The medicine barrel for a liquid medicine packaging machine according to claim 2, characterized in that, The arc-shaped groove has a uniform arc-shaped structure with a constant curvature; or, the arc of the arc-shaped groove gradually increases radially outward from the bottom center of the liquid-containing cavity.

4. The medicine barrel for a liquid medicine packaging machine according to claim 3, characterized in that, The curvature of the arc groove is controlled between 2° and 7°.

5. The medicine barrel for a liquid medicine packaging machine according to claim 2, characterized in that, The radius of the liquid-containing cavity is R, and the spray angle of the conical nozzle is θ. Then the range of the eccentricity e of the conical nozzle is controlled as: e = (1 + cosθ)·R.

6. The medicine barrel for a liquid medicine packaging machine according to claim 5, characterized in that, The spray angle θ of the conical nozzle is controlled within the range of 90° to 150°.

7. The medicine barrel for a liquid medicine packaging machine according to claim 6, characterized in that, The conical nozzle can be a solid conical nozzle or a hollow conical nozzle.

8. The medicine barrel for a liquid medicine packaging machine according to claim 7, characterized in that, The flow rate of the conical nozzle is controlled within the range of 2L / min to 6L / min, and the injection pressure of the conical nozzle is controlled within the range of 0.25 to 0.55 MPa.

9. The medicine barrel for a liquid medicine packaging machine according to claim 1, characterized in that, It also includes a liquid level detector disposed on the liquid-containing cavity and a first control valve disposed on the liquid inlet pipe. The liquid level detector is electrically connected to the first control valve and the water pump respectively. The liquid level detector is used to detect the liquid level height of the cleaning liquid in the arc-shaped groove, thereby controlling the opening and closing of the first control valve and the water pump.

10. A pharmaceutical liquid packaging machine, characterized in that, The device includes a second control valve, a drug delivery pipe, and a medicine tank as described in any one of claims 1-9, characterized in that it further includes a second control valve and a drug delivery pipe, the second control valve is disposed on the drain pipe, the second control valve is disposed between the medicine tank and the water pump, and the drug delivery pipe is connected to the second control valve, the second control valve being used to control the on / off state of the drug delivery pipe and the drain pipe.

Images