A compounding device and method for preparing a compound capsule product

Abstract

The application relates to the technical field of ingredient mixing, and particularly discloses an ingredient mixing device and method for preparing compound capsule products, wherein the device comprises a tank body and a base, the tank body is arranged on the base, a mixing mechanism is further arranged in the tank body, the mixing mechanism comprises a mixing shaft, a rotating piece and a guide piece, the mixing shaft is rotationally arranged in the tank body, a stirring piece is arranged at the middle part of the mixing shaft, a mixing area is formed through the stirring piece, an air outlet is further arranged at the position of the inner wall of the tank body corresponding to the mixing area, the air outlet is inclined to upwardly send air to form stable air flow; the rotating piece is located at the bottom of the mixing shaft, the rotating piece comprises a mixing cylinder connected to the bottom end of the mixing shaft, and a material dropping cylinder is arranged outside the mixing cylinder; through the linkage of the mixing shaft and the mixing cylinder, the airflow driving of the material collecting disc air duct, the mechanical stirring and airflow disturbance of the mixing area, and the circulation path formed by the guide piece, the material can be fully mixed during the preparation of the compound capsule.

Description

Technical Field

[0001] This invention relates to the field of ingredient mixing technology, and specifically discloses an ingredient mixing apparatus and method for preparing compound capsule products. Background Technology

[0002] Compound capsule products are usually made of a variety of active ingredients and excipients (such as Chinese medicine powder, lactose, magnesium stearate, etc.). The stability of their efficacy and the uniformity of dosage depend on the uniformity of the raw material mixing. If the mixing is insufficient, it will often lead to an imbalance in the distribution of effective ingredients, causing fluctuations in efficacy or toxic side effects. Therefore, the mixing of ingredients is the core link in ensuring product quality in the production of compound capsules.

[0003] In existing technologies, the mixing of compound capsule ingredients mainly employs single mechanical stirring (such as double cone mixers or ribbon mixers) or simple pneumatic conveying combined with stirring. Mechanical stirring relies on the rotation of blades to generate shear force, but there are dead zones in the mixing (such as the bottom of the tank or the area where the tank walls meet), and materials with a density difference >1.5 g / cm³ are prone to stratification. On the other hand, pneumatic mixing is mostly unidirectional conveying, lacking circulating disturbance, and is prone to agglomeration when dealing with viscous materials (such as those containing microcrystalline cellulose). Furthermore, the synergy between pneumatic and mechanical stirring is poor, and the mixing uniformity RSD (relative standard deviation, used to characterize the uniformity of material mixing, the smaller the value, the higher the uniformity) is often >5%. In addition, the unidirectional movement of mechanical transmission components makes it difficult to generate multidirectional shear, which further limits the mixing efficiency.

[0004] In view of this, there is an urgent need to propose a mixing device and method for preparing compound capsule products. Summary of the Invention

[0005] The purpose of this invention is to provide a mixing apparatus for preparing compound capsule products, so as to at least solve one of the above-mentioned problems in the prior art.

[0006] Specifically, the present invention is achieved through the following technical solution:

[0007] A mixing device for preparing compound capsule products, the device includes a tank and a base, the tank is disposed on the base, and a mixing mechanism is provided inside the tank. The mixing mechanism includes a mixing shaft, a rotating component and a guiding component. The mixing shaft is rotatably disposed in the tank. A stirring component is provided in the middle of the mixing shaft and a mixing area is formed by the stirring component. An air outlet is provided on the inner wall of the tank at the position corresponding to the mixing area. The air outlet is inclined upward to send air to form a stable airflow.

[0008] The rotating component is located at the bottom of the mixing shaft. The rotating component includes a mixing cylinder connected to the bottom end of the mixing shaft. A discharge cylinder is provided outside the mixing cylinder. A feed pipe extending to the outside of the tank is provided at the upper part of the discharge cylinder. The discharge cylinder is rotatably engaged with the mixing cylinder. The bottom of the discharge cylinder is open and forms a discharge gap with the bottom of the mixing cylinder. A collection plate is provided below the mixing cylinder. An air duct is provided inside the collection plate. The air duct blows air upward to form an upward airflow and drives the mixing cylinder to rotate the mixing shaft.

[0009] During feeding, the material flow enters the discharge cylinder through the feed pipe and flows out through the discharge gap at the bottom of the discharge cylinder. When the conveyed material flow flows out, the airflow carries the material flow through the mixing cylinder for initial mixing and then moves upward to the mixing area. After secondary mixing in the mixing area, it continues to be carried by the airflow into the guide component. The guide component guides the mixed material flow, causing it to continue falling into the mixing area under the action of gravity. In the mixing area, under the action of the stable airflow blown out of the air outlet and the upward airflow, it continues to fall upward through the guide component and circulates for mixing until the mixing work is completed.

[0010] It should be noted that this solution achieves thorough mixing of materials during the preparation of compound capsules through the coordinated structure of the linkage between the mixing shaft and the mixing cylinder, the airflow drive of the collecting tray duct, the mechanical stirring and airflow disturbance in the mixing zone, and the circulation path formed by the guide components. Specifically, during operation, the airflow provided by the collecting tray duct conveys the material entering the tank through the feed pipe and the discharge cylinder upwards. As the airflow carries the material into the mixing cylinder, it drives the mixing cylinder to rotate, which in turn drives the mixing shaft to rotate. This not only serves as the power source for material conveying but also drives the rotation of the mixing cylinder and the mixing shaft, allowing the material to undergo initial mixing within the mixing cylinder with the rotating airflow. The airflow energy is used to disperse components with large density differences, thereby reducing initial stratification of the material. After the material rises with the airflow into the mixing zone, the mixing shaft... The mixing components rotate with the mixing shaft, forming a mixing zone. The mechanical shearing action of the mixing components and the centrifugal force generated by the tank's rotation create multi-directional disturbance. Simultaneously, the inclined airflow from the tank's inner wall outlet and the rising airflow from the bottom form a combined longitudinal and lateral airflow field. This mechanical shearing force generated by the rotating mixing components breaks down the agglomeration of viscous materials. The combined airflow field further breaks down the agglomerates, ensuring thorough and uniform mixing and eliminating any mixing dead zones within the tank. The mixed material is then guided back to the mixing zone by the guide components, creating a continuous cycle of material rising, mechanical mixing, and airflow mixing. This continuous combined mechanical mixing and airflow disturbance within the mixing zone ensures full contact between all components, significantly improving the uniformity of ingredient mixing during the preparation of compound capsule products.

[0011] A method for mixing ingredients in the preparation of compound capsule products, and an apparatus for mixing ingredients in the preparation of compound capsule products based on the above-described method, specifically, the method includes:

[0012] Step 1: The material is added into the discharge cylinder through the feed pipe and flows in through the discharge gap. Air is supplied to the air duct of the collection tray through the air inlet pipe and blown out by the air distribution plate to form an airflow. The airflow carries the material into the mixing cylinder. At the same time, when the airflow carrying the material flows through the wind turbine, it drives the turbine to rotate and drives the mixing cylinder and the mixing shaft to rotate, so that the airflow carries the material up along the mixing cylinder and completes the initial mixing in the mixing cylinder.

[0013] Step 2: When the material continues to rise to the mixing zone, the mixing shaft drives the sleeve shaft to rotate in the opposite direction through the transmission mechanism, so that the spiral twisted blades connected by the three-pronged connecting rod and the rotating mixing wheel perform multi-directional shearing and mixing on the material. At the same time, when the mixing shaft and the sleeve shaft rotate in opposite directions, the rotating mixing wheel can also rotate autonomously through the gear at the end of the rotating rod meshing with the tooth groove of the mixing shaft. Together with the stable airflow tilted upward from the air outlet on the inner wall of the tank, it forms a compound disturbance on the material to achieve secondary mixing.

[0014] Step 3: After secondary mixing, the material is drawn into the guide chamber cavity by the negative pressure turbine driven at the top of the mixing shaft, falls back into the mixing area through the guide port, and is once again carried up by the upward airflow from the collection plate and the airflow from the outlet to form a cycle of mixing. The airflow is purified by the gas-solid separation net of the exhaust duct at the top of the guide chamber, and part of it flows back to the outlet through the return air branch pipe.

[0015] Step 4: After the material is mixed evenly, stop the tank rotation and airflow supply, turn on the external blower, and discharge the mixed material through the discharge pipe.

[0016] It should be understood that this solution, based on the structure of the ingredient mixing device, achieves efficient and uniform mixing of materials through the synergistic effect of the above steps. Specifically, it achieves efficient and uniform mixing of materials in the compound capsule preparation process through a multi-stage synergistic process of airflow-driven premixing, mechanical composite shearing and circulating disturbance, and negative pressure discharge. The initial mixing driven by airflow and the multi-directional shearing of the reverse blades and the self-rotating mixing wheel form a gradient disturbance, which, together with the circulating airflow, achieves full-domain circulation of materials, significantly improving the mixing uniformity and meeting the high-precision production requirements of compound capsule ingredients.

[0017] Compared with the prior art, the present invention has at least the following advantages and beneficial effects:

[0018] (1) By setting up a linkage structure between the material collection tray air duct, the mixing cylinder and the mixing shaft, the airflow can both carry the material upward to achieve conveying and drive the mixing cylinder and the mixing shaft to rotate to form mechanical disturbance. The airflow conveying and mechanical stirring are coordinated, and the airflow kinetic energy is used to disperse materials with different densities, reduce the phenomenon of material stratification, and improve the mixing uniformity of compound capsules during ingredient preparation.

[0019] (2) This invention achieves precise control of layered airflow by setting up annular air distribution zones, air distribution holes, and aperture adjustment components. Multiple air distribution zones form a layered airflow field. With the adjustment of the aperture of the sub-holes by rotating the ring, the air force of each layer can be flexibly adjusted for materials of different densities and viscous properties, avoiding material stratification or agglomeration under a single wind speed, improving the uniformity of the initial material distribution, thereby greatly improving the uniformity of subsequent material mixing and improving the mixing effect of the equipment.

[0020] (3) The present invention further sets up a mixing component with the mixing shaft and the sleeve shaft rotating in opposite directions and an air outlet on the inner wall of the tank to form a complex multi-directional three-dimensional disturbance field of radial shearing + axial tumbling + lateral impact. This allows the mechanical shearing to break the viscous agglomeration of the material, and then the composite airflow to eliminate the mixing dead angle, effectively alleviating the density stratification and agglomeration problem between materials, greatly improving the mixing effect of the equipment, and realizing the uniform mixing and batching of materials.

[0021] (4) The present invention constructs a closed loop path through guides, exhaust ducts and return air branch pipes. It cleverly uses guides to guide materials back to the mixing area and realizes airflow circulation based on return air branch pipes, avoiding local accumulation of materials, thereby improving the mixing uniformity of the equipment and reducing the energy consumption of the equipment.

[0022] (5) The ingredient mixing method proposed in this invention achieves continuous flow of materials through the mixing zone through multi-stage synergy of airflow premixing, mechanical shearing and cyclic disturbance, shortens the mixing cycle of materials, and significantly reduces the RSD value of materials, greatly improving the uniformity of mixing in the compound capsule preparation process, and adapting to the ingredient requirements of compound capsules with multiple components and large density differences. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 For the present invention Figure 1 A partially enlarged structural diagram of the stirring component;

[0026] Figure 3This is a schematic diagram of the surface structure of the material collection tray of the present invention;

[0027] Figure 4 This is a partial structural schematic diagram of the aperture adjustment component of the present invention;

[0028] Figure 5 This is a bottom view of the stirring component of the present invention;

[0029] Figure 6 This is a schematic diagram of the state of the rotating mixing wheel of the present invention;

[0030] Figure 7 This is a schematic diagram of the mixing method steps of the present invention.

[0031] In the above figures, the reference numerals represent: 1, tank body; 11, mixing shaft; 12, rotating component; 121, mixing cylinder; 122, discharge cylinder; 123, wind turbine; 13, guide component; 131, guide chamber; 132, guide port; 133, negative pressure turbine; 14, air outlet; 15, collection tray; 151, air distribution hole; 152, rotating ring; 1521, adjusting sub-hole; 161, sleeve shaft; 162, transmission mechanism; 163, blade; 164, rotating mixing wheel; 165, rotating rod; 166, rotating gear; 167, annular toothed groove; 17, exhaust duct; 171, return air branch pipe. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. The illustrative embodiments and descriptions of this invention are for illustrative purposes only and are not intended to limit the invention. The embodiments described below are some, but not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0033] In the following description, numerous specific details are set forth to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that these specific details are not necessary to practice the invention. In other embodiments, well-known structures, materials, or methods are not specifically described to avoid obscuring the invention. Unless otherwise specified, the materials, instruments, and reagents used in the following embodiments are commercially available. Unless otherwise specified, the techniques used in the embodiments are conventional methods well known to those skilled in the art.

[0034] 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 indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0035] Example 1:

[0036] Please refer to the following: Figures 1 to 6 As shown in the figure, this embodiment discloses a mixing device for preparing compound capsule products. The device includes a tank 1 and a base. The tank 1 is disposed on the base. A mixing mechanism is also provided inside the tank 1. The mixing mechanism includes a mixing shaft 11, a rotating component 12 and a guide component 13. The mixing shaft 11 is rotatably disposed inside the tank 1. A stirring component is provided in the middle of the mixing shaft 11 and a mixing area is formed through the stirring component. An air outlet 14 is also provided on the inner wall of the tank 1 at the position corresponding to the mixing area. The air outlet 14 is inclined upward to send air to form a stable airflow.

[0037] The rotating component 12 is located at the bottom of the mixing shaft 11. The rotating component 12 includes a mixing cylinder 121 connected to the bottom end of the mixing shaft 11. A discharge cylinder 122 is provided outside the mixing cylinder 121. A feed pipe extending to the outside of the tank body 1 is provided at the upper part of the discharge cylinder 122. The discharge cylinder 122 is rotatably engaged with the mixing cylinder 121. The bottom of the discharge cylinder 122 is open and forms a discharge gap with the bottom of the mixing cylinder 121. A collection plate 15 is provided below the mixing cylinder 121. An air duct is provided inside the collection plate 15. The air duct blows air upward to form an upward airflow and drives the mixing cylinder 121 to rotate the mixing shaft 11.

[0038] During feeding, the material flow enters the discharge cylinder 122 through the feed pipe and flows out through the discharge gap at the bottom of the discharge cylinder 122. When the conveyed material flow flows out, the airflow carries the material flow through the mixing cylinder 121 for preliminary mixing and then moves upward to the mixing area. After secondary mixing in the mixing area, it continues to be carried by the airflow into the guide member 13. The guide member 13 guides the mixed material flow, causing it to continue to fall into the mixing area under the action of gravity. In the mixing area, under the action of the stable airflow blown out of the air outlet 14 and the upward airflow, it continues to fall upward through the guide member 13 and circulates for mixing until the mixing work is completed.

[0039] It should be noted that, based on the applicant's actual operation of the existing mixing device, the core defects of the existing technology in the mixing of compound capsule ingredients are mainly concentrated in: (1) the mixing mechanism is simple, which is mostly a single mechanical stirring device, and there is a lack of sufficient coordination and linkage between mechanical stirring and airflow conveying, making it difficult to solve the density difference and viscous agglomeration problem between materials; (2) there is no closed-loop cyclic mixing path, which makes it easy for materials to accumulate locally in the tank 1 and form a mixing dead corner when mixing ingredients, making it difficult to fully mix different materials when mixing ingredients, and the mixing cycle is long, which ultimately leads to certain limitations in the mixing effect of the device.

[0040] Based on this, the batching and mixing device proposed in this embodiment constructs a closed-loop circulation path by integrating the coupling structure of airflow drive and mechanical motion, specifically solving the core problems of the single mixing mechanism and lack of circulation path in the prior art. Specifically, in terms of the mixing mechanism, the device uses the upward airflow of the air duct of the collecting tray 15 as the core power source, which both carries the material upward to achieve airflow conveying and drives the mixing cylinder 121 and the mixing shaft 11 to rotate to form mechanical disturbance, so that the airflow dispersion and mechanical rotation are initially coordinated. After entering the mixing area, the mechanical shearing of the stirring element and the inclined airflow of the air outlet 14 form a multi-dimensional disturbance field, breaking the limitations of single mechanical stirring or airflow conveying, and through airflow carrying, mechanical shearing and side movement, the device achieves a multi-dimensional disturbance field. The combined effect of pushing the airflow effectively alleviates the problems of stratification and agglomeration of viscous materials caused by density differences. Furthermore, in the circulation path within the tank 1, the guide 13 guides the mixed material back to the mixing area, and together with the rising airflow at the bottom and the airflow from the side outlet 14, it forms a closed circulation path of rising-mixing-falling-rising again. This allows the material to continuously flow through the mixing area for thorough mixing, improving the uniformity of the material mixture and avoiding the formation of local dead corners at the bottom of the tank wall. This enhances the overall flow of the material, further shortens the mixing cycle, and ultimately achieves thorough mixing of the material, improving mixing efficiency and overcoming the shortcomings of insufficient mixing and long cycles in existing devices.

[0041] In other words, this embodiment achieves thorough mixing of materials during the preparation of compound capsules through the linkage between the mixing shaft 11 and the mixing cylinder 121, the airflow drive of the collecting tray 15 air duct, the mechanical stirring and airflow disturbance in the mixing area, and the circulation path formed by the guide component 13.

[0042] In practical implementation, this device provides upward airflow through the air duct of the collection tray 15 to convey the material entering the tank 1 through the feed pipe and the discharge cylinder 122 upward. When the airflow carries the material into the mixing cylinder 121, it drives the mixing cylinder 121 to rotate, which in turn drives the mixing shaft 11 to rotate. This allows the mixing cylinder 121 to not only serve as the power source for material conveying but also to drive the mixing cylinder 121 and the mixing shaft 11 to rotate. This allows the material to undergo initial mixing within the mixing cylinder 121 with the rotating airflow, and utilizes the kinetic energy of the airflow to disperse components with large density differences, thereby reducing initial stratification of the material. After the material rises with the airflow into the mixing zone, the stirring elements outside the mixing shaft 11 rotate with the mixing shaft 11 and form a mixing zone. This allows the mechanical shearing action of the stirring elements to further disperse the material. The shearing action and the centrifugal force generated by the rotation of the tank 1 create multi-directional disturbances. At the same time, the inclined airflow from the air outlet 14 on the inner wall of the tank 1 and the rising airflow at the bottom form a composite airflow field in the longitudinal and lateral directions. Thus, the mechanical shearing force generated by the rotation of the stirring component breaks down the agglomeration of viscous materials. With the help of the composite airflow field, the agglomerated materials are thoroughly mixed and homogeneous after being broken down, and the mixing dead zones in the stirring component inside the tank 1 are eliminated. The mixed materials can continue to fall back to the mixing area by the guide component 13, forming a continuous circulation path of material rising and mechanical stirring and airflow mixing. This enables the materials to undergo continuous composite mechanical stirring and airflow disturbance mixing in the stirring area, thereby ensuring that the components of the materials are in full contact and significantly improving the uniformity of ingredient mixing during the preparation of compound capsule products.

[0043] In a further embodiment, such as Figure 1 As shown, the mixing cylinder 121 has openings at both the top and bottom, with the diameter of the upper opening being smaller than that of the lower opening. A wind turbine 123 is also provided at the bottom of the mixing cylinder 121.

[0044] Based on the above embodiment, the mixing cylinder 121 adopts a conical structure with a smaller top and a larger bottom, which can accelerate the rising airflow in the channel to enhance the entrainment of materials. At the same time, during the rising airflow, the materials are guided to diffuse along the cylinder wall to form a spiral rising flow field, thereby improving the uniformity of the initial mixing of materials in the mixing cylinder 121. The wind turbine 123 at the bottom can rotate under the impact of the airflow and convert the airflow kinetic energy into the rotational mechanical energy of the mixing shaft 11, so that the mixing shaft 11 rotates and drives the mixing cylinder to rotate, realizing the synergy of airflow drive and mechanical rotation, so as to enhance the dispersion effect of materials with different densities and reduce the initial stratification of materials, so as to facilitate subsequent stirring and mixing.

[0045] In some preferred embodiments, in Figure 1 As shown in the figure, the upper part of the collection tray 15 is recessed downward to form an arc surface, the arc surface array is provided with a plurality of air distribution holes 151, and an air inlet pipe is connected to the bottom of the collection tray 15.

[0046] It should be understood that, through the arc-shaped design of the upper part of the collection tray 15, the airflow input from the air inlet pipe forms a more uniform radially diffused upward airflow field after passing through the air distribution holes 151 of the arc-shaped array. This avoids local airflow turbulence and enhances the stable entrainment of materials. At the same time, the arc surface can naturally catch scattered materials, allowing them to re-enter the upward flow field under the airflow driven by the air distribution holes 151. This structure enhances the contact efficiency between airflow and materials, provides stable power for initial mixing, and improves mixing uniformity.

[0047] It should be understood that, in specific implementation, a filter screen for intercepting materials is also provided above the air distribution hole 151 to prevent materials from falling into the air distribution hole 151, causing material waste or clogging of the air distribution hole 151.

[0048] Further in a preferred embodiment, such as Figure 3 and Figure 4 As shown, the multiple air distribution holes 151 are arranged in a ring array and form multiple interlocking ring air distribution areas from the inside out. Inside the material collection tray 15, there is also an aperture adjustment component corresponding to the corresponding ring air distribution area. The aperture adjustment component includes multiple interlocking rotating rings 152 that are rotatably engaged with each other. The rotating rings 152 are rotatably engaged with the material collection tray 15. Multiple sets of spaced adjustment hole groups are opened on the surface of the rotating rings 152. Each adjustment hole group includes adjustment sub-holes 1521 with different apertures.

[0049] By rotating the rotating ring 152, the overlap state between the regulating sub-hole 1521 and the air distribution hole 151 is changed, thereby adjusting the aperture size of the air distribution hole 151 in the annular air distribution area.

[0050] Based on the above embodiments, it should be further explained that multiple annular air distribution zones are located on the arc surface of the collecting disk 15, and are arranged in sequence from the inside to the Nth ring (N≥2, but in this embodiment, for example, there are only 3 rings). The air distribution holes 151 of each ring of the annular air distribution zone are evenly distributed circumferentially along the arc surface of the collecting disk 15, and the initial aperture of the air distribution holes 151 in the same ring is the same. The rotating rings 152 correspond one-to-one with the annular air distribution zones, and each rotating ring 152 is preferably connected to the collecting disk 15 by rotating via an annular slide rail. The rotating rings 152 are connected, and a sealing isolation ring can be provided between adjacent rotating rings 152 so that the rotating rings 152 can rotate independently. The adjustment hole groups on each rotating ring 152 are spaced apart along the circumferential direction, and the number and distribution angle of each adjustment hole group are consistent with the air distribution holes 151 of the corresponding annular air distribution area. The adjustment sub-holes 1521 in the same adjustment hole group are arranged at equal intervals along the circumferential direction of the rotating ring 152, and their hole diameters decrease sequentially. The hole diameter of the adjustment sub-hole 1521 located at the initial position in each adjustment hole group is adapted to the initial hole diameter of the corresponding air distribution hole 151.

[0051] In addition, it should be added that the circular slide rail can be implemented using an electric slide rail module. It is understood that the electric slide rail module itself is existing technology, and technical personnel can obtain relevant technology through existing public channels (such as market purchases). Moreover, it is not within the scope of protection of this application. Therefore, it will not be specifically limited or further explained here. In practical applications, those skilled in the art can also select the appropriate electric guide rail module based on the actual situation to realize the rotation of the rotating ring 152.

[0052] It should be understood that this embodiment constructs a precisely controllable layered airflow system through the cooperation of multiple annular air distribution zones and corresponding rotating rings 152. This system addresses the differentiated airflow intensity requirements of materials with different densities and viscosity in the compound capsule preparation process. Furthermore, the multiple annular air distribution zones ensure that the rising airflow from the collecting disc 15 is distributed in layers when blown out through the air distribution holes 151, guaranteeing that the rising airflow can uniformly entrain materials at different radial positions. Additionally, the one-to-one correspondence between the rotating rings 152 and the annular air distribution zones, along with the decreasing aperture of the adjusting sub-holes 1521 in the adjusting hole group, enables independent control of the airflow intensity of each layer. That is, when a rotating ring 152 is rotated, the overlapping area of ​​its adjusting sub-hole 1521 and the corresponding air distribution hole 151 changes. Since the aperture of the overlapping adjusting sub-hole 1521 determines the air distribution hole 151 of that layer... The effective ventilation cross-sectional area allows for flexible operation during batching and mixing. For example, in the initial state, the adjusting sub-hole 1521 and the air distribution hole 151 completely overlap (identical aperture, maximum airflow). After rotation, the adjusting sub-hole 1521 overlaps with the air distribution hole 151 to a smaller size (smaller aperture, weaker airflow). Specifically, for the outer ring area of ​​the high-density material collection tray 15, the aperture of the air distribution hole 151 in the third ring of the annular air distribution zone is increased to enhance airflow. Conversely, for the lightweight and easily airborne materials in the inner ring, the aperture of the air distribution hole 151 in the corresponding annular air distribution zone can be decreased to achieve stable conveying. This precisely matches the airflow requirements of different materials, avoiding material stratification or agglomeration under a single wind speed, significantly improving the initial uniformity of material distribution in the mixing area. Furthermore, the air distribution holes 151 in each ring of the annular air distribution zone can be adjusted collaboratively to achieve synchronous changes in overall airflow intensity, thus laying the foundation for subsequent batching and compound mixing.

[0053] In some specific embodiments, in Figure 1 and Figure 2As shown in the diagram, the stirring component includes a sleeve 161 coaxially sleeved outside the mixing shaft 11. The top end of the sleeve 161 is connected to the mixing shaft 11 via a transmission mechanism 162. When the mixing shaft 11 rotates, the transmission mechanism 162 drives the sleeve 161 to rotate in the opposite direction. Spiral twisted blades 163 are connected to the upper outside of the sleeve 161 and the lower outside of the mixing shaft 11 via a three-pronged connecting rod. The length direction of the blades 163 is parallel to the axial direction of the sleeve 161.

[0054] Based on the stirring structure of the above embodiment, when the rotation of the mixing shaft 11 drives the sleeve shaft 161 to rotate in the opposite direction through the transmission mechanism 162, the three-pronged connecting rod drives the blades 163 to rotate in the opposite direction, so as to realize that the blades 163 perform reverse mechanical shearing and stirring on the material entering the mixing area, and form a three-dimensional disturbance field based on the oblique airflow blown out from the side air outlet 14 of the tank body 1.

[0055] Specifically, when the mixing shaft 11 rotates, the transmission mechanism 162 drives the sleeve shaft 161 to rotate in the opposite direction. This causes the three-pronged connecting rods on the mixing shaft 11 and the sleeve shaft 161 to drive the two sets of blades 163 to rotate in opposite directions. That is, the blades 163 on the mixing shaft 11 and the blades 163 on the sleeve shaft 161 rotate in opposite directions. Because the three-pronged connecting rods are misaligned, the two sets of blades 163 form an interlaced shear trajectory in the mixing area. Thus, when the material enters the mixing area, the two counter-rotating blades 163 can generate bidirectional shear force on the material: the blades 163 on the mixing shaft 11 side push the material in a clockwise circular motion, while the blades 163 on the sleeve shaft 161 side drive the material in a counter-clockwise motion. The relative motion of the two causes the material to produce a violent kneading and tearing effect in the radial direction, which can effectively break up the particles caused by density differences. The material (such as high-density particles being sheared into low-density powder) is simultaneously subjected to a "tearing-dispersing" effect on viscous agglomerates. Meanwhile, the spirally twisted blades 163 generate a corresponding reverse axial pushing force during reverse rotation, causing the material to circulate up and down along the sleeve shaft 161 and spread outwards. The oblique airflow blown from the side air outlet 14 of the tank 1 impacts the mixing area from the side, creating a cross disturbance with the horizontal shearing force formed by the blades 163. This, in turn, superimposes to form a three-dimensional disturbance field of "radial shearing + axial tumbling + lateral impact". Thus, the mechanical shearing enhances the local crushing ability through reverse relative motion, and the airflow disturbance eliminates the vortex dead angles formed by mechanical stirring through full-area flow. This ensures that the material, whether in the center or at the edge of the mixing area, is subjected to continuous and multi-angle action, significantly improving the mixing of different densities and viscous materials within the mixing area.

[0056] As a further supplement, the transmission mechanism 162 in this embodiment preferably adopts a planetary gear set, and a dust cover is provided on the outside of the planetary gear set. The dust cover is fixedly connected to the tank body 1 by a connecting rod. The mixing shaft 11 and the sleeve shaft 161 are both rotatably engaged with the dust cover. The planetary gear set is located inside the dust cover and includes a driving gear, a driven gear, and a reversing gear ring. The driving gear is keyed to the upper part of the mixing shaft 11, while the driven gear is meshed outside the driving gear and connected to the dust cover through a gear rod. The reversing gear ring is located inside the sleeve shaft 161 and meshes with the driven gear. This causes the driving gear to rotate when the mixing shaft 11 rotates, which in turn drives the reversing gear ring to rotate in the opposite direction through the driven gear. This reverse rotation of the reversing gear ring then drives the sleeve shaft 161 to rotate in the opposite direction. It should also be noted that in this embodiment, the planetary gear set is used only as a power transmission mechanism to transmit the rotational torque of the mixing shaft 11 to the sleeve shaft 161 so that the sleeve shaft 161 rotates in the opposite direction. Therefore, it is not the only optional mechanism in this embodiment. In specific implementation, the operator can also select the corresponding transmission mechanism 162 according to the actual situation.

[0057] In a further preferred embodiment, such as Figure 1 , Figure 2 and Figure 5 As shown, a rotating mixing wheel 164 is rotatably connected to the side surface of the blade 163 facing the sleeve shaft 161. One end of the rotating mixing wheel 164 is connected to a rotating rod 165 extending into the sleeve shaft 161. The rotating rod 165 passes through the sleeve shaft 161 and is rotatably sealed with the sleeve shaft 161. At the end of the rotating rod 165 away from the blade 163, it meshes with an annular toothed groove 167 opened on the outside of the mixing shaft 11 through a rotating gear 166.

[0058] Based on the above embodiments, by coordinating the rotation of the mixing wheel 164 with the paddle 163, a composite mixing system of paddle 163 revolution and mixing wheel rotation is constructed. This breaks through the limitations of traditional single-blade 163 mixing. That is, when the mixing shaft 11 and the sleeve shaft 161 rotate synchronously in opposite directions under the drive of the transmission mechanism 162 (e.g., mixing shaft 11 clockwise and sleeve shaft 161 counterclockwise), they drive the connected paddle 163 to form a reverse shear flow field. At the same time, the annular toothed groove 167 of the mixing shaft 11 rotates with it, and the rotating rod 165 and the mixing wheel rotate independently through gear meshing, so that... The mixing wheel can rotate on its own axis while revolving around the impeller 163. This combined motion generates a multi-directional force of "kneading-tearing-scattering" on the material near the impeller 163. This can break up viscous agglomerates and eliminate the retention of high-density particles in the gap between the impeller 163 and the shaft (covering the "shaft-side blind zone" of traditional mixing). It can also continuously "push away" and throw the material that moves synchronously with the impeller 163 to the surroundings through its rotation. In the case of mixing materials containing viscous components and with large density differences, such as compound capsule ingredients, the collision frequency of materials can be significantly increased, thereby further improving the uniformity of mixing.

[0059] In a further embodiment, in Figure 1 As shown in the figure, the guide member 13 includes a guide chamber 131 with an internal cavity and an open bottom. A guide port 132 with a downward opening is also provided outside the guide chamber 131, and the guide port 132 is connected to the cavity. A negative pressure turbine 133 is rotatably installed inside the cavity. The bottom of the negative pressure turbine 133 is connected to the top of the mixing shaft 11 extending into the cavity.

[0060] Based on the above embodiments, a material conveying channel is formed by the cavity of the guide chamber 131, the bottom opening, and the downward-facing guide port 132. When the mixing shaft 11 rotates, its top end drives the negative pressure turbine 133 in the cavity to rotate. The negative pressure effect generated by the turbine rotation can be used to draw the material above the mixing area or the powder that is not fully mixed into the cavity through the guide port 132, and then guide it back into the mixing area through the bottom opening, forming a suction-return material circulation path. That is, by using negative pressure, the upward conveying capacity of the material is enhanced, avoiding local accumulation or stagnation. Furthermore, the directional guidance of the guide port 132 allows the return material to accurately enter the mixing core area, which works synergistically with the stirring of the paddle 163 and the airflow disturbance to improve the circulation frequency and interweaving efficiency of the material. Moreover, the closed cavity of the guide chamber 131 can reduce airflow turbulence and make the negative pressure suction more stable, ultimately effectively improving the mixing uniformity and shortening the mixing cycle of the entire batching.

[0061] In some preferred embodiments, such as Figure 1As shown, an exhaust duct 17 extending to the outside of the tank body 1 is provided at the top of the guide chamber 131. The exhaust duct 17 has a gas-solid separation net inside. A return air branch pipe 171 is also provided on one side of the exhaust duct 17. One end of the return air branch pipe 171 passes through the tank body 1 and is connected to the air outlet 14.

[0062] Based on the technical solution disclosed in the above embodiments, an exhaust duct 17 with a gas-solid separation net and a return air branch pipe 171 are set at the top of the guide chamber 131, forming a circulation path for airflow circulation and material recovery. Specifically, after the airflow generated by the rotation of the negative pressure turbine 133 carries some fine materials into the cavity of the guide chamber 131, the airflow continues to rise through the exhaust duct 17. The gas-solid separation net can separate and intercept the entrained materials to prevent the materials from being lost with the exhaust. Part of the separated clean airflow continues to be discharged through the exhaust duct 17 to avoid excessive pressure accumulation in the tank 1 due to continuous airflow circulation, while the other part is guided back to the air outlet 14 of the tank 1 through the return air branch pipe 171 to re-participate in the oblique airflow disturbance, thereby achieving uniform mixing of the materials in the tank 1 and avoiding adverse effects on the mixing of ingredients due to excessive pressure.

[0063] In a further embodiment, a discharge pipe is provided on one side of the tank 1 at the location corresponding to the mixing area, and the discharge pipe is used to discharge the mixed material through an external induced draft fan.

[0064] Based on the above embodiments, by setting up the discharge pipe and the induced draft fan, the material can be quickly discharged after mixing. Specifically, the external induced draft fan forms a directional negative pressure field in the mixing area through the discharge pipe, and uses the airflow suction to quickly discharge the uniformly mixed material along the discharge pipe, avoiding the residual accumulation of material at the bottom of the tank 1 during traditional gravity discharge.

[0065] Example 2:

[0066] Based on Example 1 above, this example proposes a method for mixing ingredients in the preparation of compound capsule products. For details, please refer to... Figure 7The method includes: Step 1: The material is added into the discharge cylinder 122 through the feed pipe and flows in from the discharge gap. Air is supplied to the air duct of the collection plate 15 through the air inlet pipe and blown out by the air distribution plate to form an airflow. The airflow carries the material into the mixing cylinder 121. At the same time, when the airflow carrying the material flows through the wind turbine 123, it drives the turbine to rotate and drives the mixing cylinder 121 and the mixing shaft 11 to rotate, so that the airflow carries the material up along the mixing cylinder 121 and completes the initial mixing in the mixing cylinder 121; Step 2: When the material continues to rise to the mixing area, the mixing shaft 11 drives the sleeve shaft 161 to rotate in the opposite direction through the transmission mechanism 162, so that the spiral twisted blade 163 connected by the three-pronged connecting rod and the rotating mixing wheel 164 perform multi-directional shearing and stirring of the material. At the same time, when the mixing shaft 11 and the sleeve shaft 161 rotate in the opposite direction, the rotating mixing wheel 164 can also rotate autonomously by meshing the gear at the end of the rotating rod 165 with the tooth groove of the mixing shaft 11, and cooperate with the stable airflow tilted upward from the air outlet 14 on the inner wall of the tank 1 to form a compound disturbance to achieve secondary mixing of the material; Step 3: The material after secondary mixing is sucked into the cavity of the guide chamber 131 under the action of the negative pressure turbine 133 driven at the top of the mixing shaft 11, falls back to the mixing area through the guide port 132, and is once again carried upward by the upward airflow of the collection plate 15 and the airflow of the air outlet 14 to form a cycle mixing, while the airflow is purified by the gas-solid separation net of the exhaust duct 17 at the top of the guide chamber 131, and part of it flows back to the air outlet 14 through the return air branch pipe 171 and blown out; Step 4: After the material is uniformly mixed, the rotation of the tank 1 and the airflow supply are stopped, the external induced draft fan is turned on, and the mixed material is extracted and discharged through the discharge pipe.

[0067] It should be understood that the above embodiments, based on the structure of the batching and mixing device, achieve efficient and uniform mixing of materials through the synergistic effect of each step; for example,

[0068] In step 1, the directional airflow generated by the collecting pan 15 air duct carries the material flowing out of the material drop gap into the mixing cylinder 121. At the same time, the airflow drives the wind turbine 123 to rotate, converting the air kinetic energy into the rotational mechanical energy of the mixing cylinder 121 and the mixing shaft 11. This allows the material to undergo initial swirling mixing within the conical channel of the mixing cylinder 121. The combined effect of airflow disturbance and mechanical rotation initially breaks down the material stratification caused by density differences. Then, in step 2, the mixing shaft 11 drives the sleeve shaft 161 to rotate in the opposite direction through the transmission mechanism 162. This causes the spiral twisted blades 163 connected by the three-pronged connecting rod to form axial and radial shear fields. Simultaneously, the rotating mixing wheel 164 achieves autonomous rotation through the meshing of gears with the tooth grooves of the mixing shaft 11, forming local high-frequency stirring. This, combined with the inclined airflow from the air outlet 14 on the inner wall of the tank 1, forms a three-dimensional disturbance field. Through the superposition of multi-directional mechanical shearing and airflow disturbance, the agglomeration of viscous materials is broken down, improving the mixing uniformity. In step 3, the mixing shaft... The negative pressure turbine 133 at the top of the 11 creates a pressure difference, drawing the material into the guide chamber 131 and back to the mixing area through the guide port 132. Combined with the airflow driving force of the collection plate 15 and the air outlet 14, a closed-loop circulation path of rising-mixing-falling is constructed, realizing continuous composite mechanical stirring and airflow disturbance mixing of the material in the mixing area, thereby ensuring full contact of the components of the material and eliminating the local accumulation dead corners of traditional equipment. At the same time, after the airflow is purified by the gas-solid separation net of the exhaust duct 17, part of it flows back to the air outlet 14 through the return air branch pipe 171, realizing the secondary utilization of airflow energy, and finally the mixed material is discharged in step 4. It specifically solves the problems of material stratification due to density differences, agglomeration of viscous materials, and mixing dead corners in traditional mixing processes, significantly reducing the material mixing uniformity RSD (relative standard deviation). At the same time, the unit energy consumption is reduced through the airflow circulation design, forming a functional match with the structural characteristics of the device, and finally achieving efficient and stable batching and mixing effect.

[0069] Furthermore, the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are all schematic diagrams, intended only to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0070] Furthermore, the terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

Claims

1. A mixing apparatus for preparing compound capsule products, the apparatus comprising a tank (1) and a base, the tank (1) being disposed on the base, and a mixing mechanism being provided inside the tank (1), characterized in that, The mixing mechanism includes a mixing shaft (11), a rotating component (12), and a guide component (13). The mixing shaft (11) is rotatably disposed inside the tank (1). A stirring component is provided in the middle of the mixing shaft (11) and a mixing area is formed through the stirring component. An air outlet (14) is also provided on the inner wall of the tank (1) at the position corresponding to the mixing area. The air outlet (14) tilts upward to send air to form a stable airflow. The rotating component (12) is located at the bottom of the mixing shaft (11). The rotating component (12) includes a mixing cylinder (121) connected to the bottom end of the mixing shaft (11). A discharge cylinder (122) is provided outside the mixing cylinder (121). A feed pipe extending to the outside of the tank body (1) is provided at the upper part of the discharge cylinder (122). The discharge cylinder (122) is rotatably engaged with the mixing cylinder (121). The bottom of the discharge cylinder (122) is open and forms a discharge gap with the bottom of the mixing cylinder (121). A collection plate (15) is provided below the mixing cylinder (121). An air duct is provided inside the collection plate (15). The air duct blows air upward to form an upward airflow and drives the mixing cylinder (121) to rotate the mixing shaft (11). A wind turbine (123) is also provided at the bottom of the mixing cylinder (121); The upper part of the collection tray (15) is recessed downward to form an arc surface. The arc surface array is provided with multiple air distribution holes (151), and an air inlet pipe is connected to the bottom of the collection tray (15).

2. The mixing apparatus for preparing compound capsule products according to claim 1, characterized in that, The mixing cylinder (121) has openings at both the top and bottom, and the diameter of the upper opening is smaller than the diameter of the lower opening.

3. The mixing apparatus for preparing compound capsule products according to claim 1, characterized in that, Multiple air distribution holes (151) are arranged in a ring array and form multiple interlocking ring air distribution zones from the inside out. Inside the collection tray (15), there is also an aperture adjustment component corresponding to the corresponding ring air distribution zone. The aperture adjustment component includes multiple interlocking rotating rings (152) that are rotatably engaged with each other. The rotating rings (152) are rotatably engaged with the collection tray (15). Multiple sets of spaced adjustment hole groups are opened on the surface of the rotating rings (152). Each adjustment hole group includes adjustment sub-holes (1521) with different apertures. By rotating the rotating ring (152), the overlap state between the regulating sub-hole (1521) and the air distribution hole (151) is changed, thereby adjusting the aperture size of the air distribution hole (151) in the annular air distribution area.

4. The mixing apparatus for preparing compound capsule products according to claim 1, characterized in that, The stirring component includes a sleeve (161) coaxially sleeved outside the mixing shaft (11). The top end of the sleeve (161) is connected to the mixing shaft (11) via a transmission mechanism (162). The transmission mechanism (162) drives the sleeve (161) to rotate in the opposite direction when the mixing shaft (11) rotates. Spiral-twisted blades (163) are connected to the upper outer surface of the sleeve (161) and the lower outer surface of the mixing shaft (11) via a three-pronged connecting rod. The length direction of the blades (163) is parallel to that of the sleeve (161). The axial direction is parallel, and a rotating mixing wheel (164) is rotatably connected to the side surface of the blade (163) facing the sleeve shaft (161). One end of the rotating mixing wheel (164) is connected to a rotating rod (165) extending into the sleeve shaft (161), and the rotating rod (165) passes through the sleeve shaft (161) and rotates and seals with the sleeve shaft (161). At the end of the rotating rod (165) away from the blade (163), it meshes with an annular toothed groove (167) opened on the outside of the mixing shaft 11 through a rotating gear (166).

5. The mixing apparatus for preparing compound capsule products according to claim 4, characterized in that, The guide member (13) includes a guide chamber (131) with an internal cavity and an open bottom. A guide port (132) with an opening facing downward is also provided outside the guide chamber (131), and the guide port (132) is connected to the cavity. A negative pressure turbine (133) is rotatably installed inside the cavity. The bottom of the negative pressure turbine (133) is connected to the top of a mixing shaft (11) extending into the cavity.

6. The mixing apparatus for preparing compound capsule products according to claim 5, characterized in that, An exhaust duct (17) extending to the outside of the tank body (1) is provided at the top of the guide chamber (131). The exhaust duct (17) is equipped with a gas-solid separation net. A return air branch pipe (171) is also provided on one side of the exhaust duct (17). One end of the return air branch pipe (171) passes through the tank body (1) and is connected to the air outlet (14).

7. The mixing apparatus for preparing compound capsule products according to claim 6, characterized in that, The tank (1) is provided with a discharge pipe on one side corresponding to the mixing area. The discharge pipe is used to discharge the mixed material through an external blower.

8. A method for mixing ingredients in the preparation of compound capsule products, implemented using the mixing apparatus for preparing compound capsule products as described in claim 7, characterized in that, The method includes: Step 1: The material is added into the discharge cylinder (122) through the feed pipe and flows in from the discharge gap. Air is supplied to the air duct of the collection plate (15) through the air inlet pipe and blown out through the air distribution hole to form an airflow. The airflow carries the material into the mixing cylinder (121). At the same time, when the airflow carrying the material flows through the wind turbine (123), it drives it to rotate and drives the mixing cylinder (121) and the mixing shaft (11) to rotate, so that the airflow carries the material up along the mixing cylinder (121) and completes the initial mixing in the mixing cylinder (121). Step 2: When the material continues to rise to the mixing zone, the mixing shaft (11) drives the sleeve shaft (161) to rotate in the opposite direction through the transmission mechanism (162), so that the spiral twisted blade (163) connected by the three-pronged connecting rod and the rotating mixing wheel (164) perform multi-directional shearing and stirring of the material. At the same time, when the mixing shaft (11) and the sleeve shaft (161) rotate in the opposite direction, the rotating mixing wheel (164) can also rotate autonomously through the gear at the end of the rotating rod (165) meshing with the tooth groove of the mixing shaft (11), and cooperate with the stable airflow tilted upward from the air outlet (14) on the inner wall of the tank (1) to form a compound disturbance to achieve secondary mixing of the material. Step 3: The material after secondary mixing is drawn into the cavity of the guide chamber (131) by the negative pressure turbine (133) driven at the top of the mixing shaft (11), falls back into the mixing area through the guide port (132), and is carried up again by the upward airflow from the collection plate (15) and the airflow from the air outlet (14) to form a cycle mixing. The airflow is purified by the gas-solid separation net of the exhaust duct (17) at the top of the guide chamber (131), and part of it flows back to the air outlet (14) through the return air branch pipe (171) and is blown out. Step 4: After the material is mixed evenly, stop the rotation of the tank (1) and the air supply, turn on the external blower, and discharge the mixed material through the discharge pipe.

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