Multi-directional transmission-based traditional Chinese medicine liquid stirring and mixing device

Abstract

The utility model discloses a traditional Chinese medicine liquid stirring mixing device based on multidirectional drive relates to traditional Chinese medicine liquid processing equipment technical field, aims at solving the problem that the existing device mixes poor uniformity, and the adaptability is insufficient. The device includes support assembly, stirring assembly and liquid collecting component, and support assembly contains upper cover, middle cover, mixing cylinder, fixed sleeve and support leg, and middle cover is connected with mixing cylinder screw thread, and mixing cylinder is equipped with scale line, and stirring assembly is driven by planetary gear train, and driving shaft is equipped with reverse spiral blade, and driven shaft is equipped with screw blade group and spiral blade, and forms " revolution + reverse rotation " compound motion, and liquid collecting component contains liquid receiving pipe and electric valve. The utility model realizes the multidirectional stirring of central convection, inner wall scraping and bottom anti -precipitation, and is suitable for the scene such as traditional Chinese medicine clinical treatment, traditional chinese medicine pharmacy etc.

Description

Technical Field

[0001] This utility model relates to the technical field of traditional Chinese medicine liquid processing equipment, specifically a traditional Chinese medicine liquid stirring and mixing device based on multi-directional transmission. It is suitable for uniform mixing of traditional Chinese medicine liquids that have been decocted multiple times in scenarios such as traditional Chinese medicine clinical practice and pharmacies, and can especially meet the high-efficiency stirring requirements of traditional Chinese medicine liquids with different viscosities and different components. Background Technology

[0002] In clinical treatment and daily administration of traditional Chinese medicine (TCM), herbal decoctions typically require multiple decoctions and thorough mixing to ensure consistent efficacy with each dose, thereby guaranteeing therapeutic results. Currently, existing TCM decoction mixing devices suffer from the following main problems:

[0003] 1. Unidirectional stirring and poor mixing uniformity: The structure of a single stirring shaft and stirring blades can only achieve unidirectional rotation and stirring of the medicinal liquid. For medicinal liquids containing suspended particles or viscous components, local precipitation or component stratification is likely to occur. Medicinal liquids that have been boiled multiple times are difficult to achieve the ideal mixing uniformity, which directly affects the efficacy of the medicine.

[0004] 2. Insufficient adaptability, making it difficult to handle diverse medicinal solutions: The composition of traditional Chinese medicine solutions varies greatly. Some solutions contain fibrous residues (such as astragalus and angelica), while others have high viscosity (such as solutions made with donkey-hide gelatin and honey). The stirring components of existing devices are mostly fixed structures, making it impossible to adjust the stirring intensity and range according to the characteristics of the medicinal solution. This can easily lead to situations where residues become entangled in the stirring blades, or viscous medicinal solutions adhere to the cylinder wall and cannot participate in the mixing process.

[0005] Therefore, there is an urgent need for a traditional Chinese medicine liquid stirring and mixing device that is simple in structure, reliable in transmission, uniform in mixing, and adaptable to the characteristics of various medicinal liquids, in order to overcome the shortcomings of existing technologies. Summary of the Invention

[0006] This utility model discloses a traditional Chinese medicine liquid stirring and mixing device based on multi-directional transmission, which aims to solve the problems of poor mixing uniformity and insufficient adaptability of existing devices.

[0007] I. Device Composition

[0008] The device consists of a support assembly, a stirring assembly, and a liquid collection assembly. The structural design of each component is closely integrated, as detailed below:

[0009] (I) Support Components

[0010] The support assembly, as the basic load-bearing structure of the device, plays a role in fixing and supporting various functional components and ensuring the stability of the drug solution mixing environment. It includes an upper cover, a middle cover, a support plate, a mixing cylinder, a fixing sleeve, and support legs. The structure and connection relationship of each component are as follows:

[0011] Top cover: It is connected to the middle cover by threads, which is convenient for disassembly to inspect the vertical motor and clean the dust in the top cover; the top cover has air holes, which are specifically used for heat dissipation during the operation of the vertical motor, so as to prevent the motor from affecting the transmission stability due to overheating.

[0012] The inner wall of the middle cover is equipped with a support plate that is integrated with the middle cover; the inner wall of the middle cover is also equipped with an annular toothed groove, which is fixed in position and meshes with three driven planetary gears in the stirring assembly, providing the driven planetary gears with a revolution track and a power source for rotation; the middle cover and the mixing cylinder are also connected by threads, and the mixing cylinder can be cleaned separately by unscrewing the middle cover.

[0013] Support plate: It has a central through hole at its center that mates with the drive shaft, ensuring that the drive shaft can be stably inserted and rotated; the lower part has an annular guide cavity, the width and height of which are adapted to the shaft end lug at the top of the driven shaft, and the bottom annular interface of the annular guide cavity is adapted to the driven shaft. The diameter of the shaft end lug is larger than the diameter of the driven shaft, which can restrict the driven shaft from leaving the annular guide cavity, while ensuring that the shaft end lug slides smoothly along the annular guide cavity.

[0014] Mixing cylinder: Made of glass, allowing operators to visually observe the mixing process of the liquid. Graduation lines are engraved on the outer side of the cylinder for precise control of the added and mixed amounts of liquid. The top of the mixing cylinder has an external thread that connects to the middle cover. A rectangular annular sealing groove is formed on the top end face of the mixing cylinder, containing a fluororubber O-ring #1. When the middle cover is tightened, the O-ring #1 is pressed to form a sealing interface. A coarse filter with an annular bracket can be placed on the top end face of the mixing cylinder to filter large particles of dregs in the liquid. The coarse filter has a handle for easy removal of the dregs. A stepped through-hole is located at the center of the bottom of the mixing cylinder. The steps of the stepped through-hole are adapted to fit a fine filter. The fine filter is placed on the steps for secondary fine filtration of the mixed liquid. The fine filter also has a handle for easy removal of the dregs. A sealing ring is located at the bottom of the stepped through-hole to press against the sealing ring #2 on the top end face of the receiving pipe, forming a sealing interface.

[0015] Fixing sleeve: Made of stainless steel, with an annular base at the bottom. The inner diameter of the side wall is adapted to the outer diameter of the mixing cylinder (gap 0.5-1mm), allowing the mixing cylinder to be smoothly placed inside the fixing sleeve. A food-grade silicone pad (shock absorption and anti-slip) is attached to the annular base at the bottom of the fixing sleeve, and a food-grade silicone ring (buffer and anti-scratch) is attached to the inner side of the top of the side wall. Multiple observation windows are evenly distributed along the circumference of the side wall (avoiding the scale lines of the mixing cylinder) for observing the state of the liquid and the scale values. The annular base at the bottom of the fixing sleeve is fixedly connected to the support legs, providing indirect support for the mixing cylinder and preventing direct contact between the support legs and the glass mixing cylinder.

[0016] Support legs: Made of stainless steel round tubes, welded and fixed to the bottom ring base of the fixed sleeve. Three support legs are evenly distributed in a 120° circle. Silicone anti-slip pads are attached to the bottom of the support legs to further enhance the overall stability of the device and prevent it from tipping over during the stirring process.

[0017] (II) Stirring Components

[0018] The stirring assembly is the core component for achieving multi-directional stirring of the liquid medicine. The stirring effect can be adjusted according to the characteristics of the liquid medicine. It mainly includes a vertical motor, a driving wheel, driven planetary gears, a driving shaft, a driven shaft, a shaft hub, spiral blade #1, reverse spiral blade #2, and spiral blade #3. The specific structure is as follows:

[0019] Power and transmission components: A vertical motor is fixedly mounted on the top surface of the support plate, and its output end is connected to the top of the drive shaft to provide rotational power to the drive shaft; the drive wheel is fixedly sleeved on the drive shaft, and the upper and lower ends of the drive wheel are fitted with hubs to restrict the axial displacement of the drive wheel along the drive shaft; three driven planetary gears and three driven shafts are provided, each driven planetary gear is fixedly connected to the corresponding driven shaft, and the upper and lower ends of each driven planetary gear are also fitted with hubs to restrict the axial displacement of the driven planetary gear along the driven shaft; all three driven planetary gears mesh with the drive wheel and simultaneously mesh with the annular toothed grooves on the inner wall of the middle cover to form a planetary gear transmission structure.

[0020] Stirring blade structure: The drive shaft is segmented along the axial direction with helical blades of different rotation directions. The upper part has helical blade #1 (e.g., left-handed blade), and the lower part has reverse helical blade #2 (e.g., right-handed blade). The rotation of the reverse-positioned helical blades can push the liquid in the central area of ​​the mixing cylinder to form vertical convection, while generating local vortices, enhancing the mixing effect of the liquid in the central area. The driven shaft is equipped with two stirring components along the axial direction. The upper part has multiple propeller blade groups spaced apart along the axial direction of the driven shaft. The distance between the end of the propeller blade group and the inner wall of the mixing cylinder is controlled at more than 2mm. This can scrape off the liquid adhering to the inner wall of the mixing cylinder, avoiding the formation of dead flow zones, and also prevent the propeller blades from scraping and damaging the inner wall of the mixing cylinder. The lower part of the driven shaft has helical blade #3. This helical blade #3 can penetrate deep into the bottom area of ​​the mixing cylinder, effectively stirring the liquid at the bottom and preventing the precipitation of particulate components in the liquid.

[0021] The aforementioned stirring assembly, together with the top cover and the middle cover (including the integrally formed support plate and annular toothed groove), can form a detachable, integrated module.

[0022] (III) Liquid Collection Components

[0023] The liquid collection assembly controls the outflow and collection of the liquid medicine after stirring. It includes a receiving pipe and an electric valve. The receiving pipe is threadedly connected to the stepped through-hole at the bottom of the mixing cylinder, ensuring that the stirred liquid medicine can flow smoothly into the receiving pipe through the stepped through-hole. The top of the receiving pipe has an external thread, and the top end face of the receiving pipe has an annular sealing groove with a rectangular cross-section. A fluororubber O-ring #2 is embedded in the sealing groove. When tightened with the internal thread of the stepped through-hole, the sealing ring of the receiving pipe compresses the sealing ring #2 to form a sealing interface. An electric valve is installed on the receiving pipe and is electrically connected to an external controller. The controller can control the opening and closing of the electric valve, thereby precisely controlling the timing and rate of liquid medicine outflow. The lower end of the receiving pipe is constricted, which can collect the outflowing liquid medicine, facilitating accurate loading of the liquid medicine into an external container.

[0024] II. Working Principle

[0025] This invention achieves efficient and uniform mixing of traditional Chinese medicine liquids based on the planetary gear transmission principle and the synergistic effect of multi-directional stirring blades. The specific working principle is as follows:

[0026] (1) Power transmission and multi-directional motion realization:

[0027] The vertical motor is started, and the motor speed can be adjusted to the range of 0-500 r / min via an external controller to adapt to different viscosities of the medicine solution (low speed stirring is used for high viscosity medicine solutions, and high speed stirring is used for dilute medicine solutions); the motor output torque drives the drive shaft to rotate around its own axis, and the drive shaft synchronously drives the drive wheel on it to rotate; because the three driven planetary gears mesh with the drive wheel respectively, and at the same time mesh with the fixed annular tooth groove, under the driving force of the drive wheel and the meshing constraint of the annular tooth groove, the three driven planetary gears both revolve around the central axis of the drive shaft (i.e., the central axis of the mixing cylinder) in the same direction as the rotation of the drive wheel, and rotate in the opposite direction around the central axis of their corresponding driven shaft, ultimately realizing the "revolution + reverse rotation" compound motion of the driven shaft.

[0028] (2) Multi-zone drug solution stirring effect:

[0029] Central region of the mixing cylinder: When the drive shaft rotates, the spiral blade 1# and the counter-spiral blade 2# on it rotate synchronously. Since the two blades rotate in opposite directions, they can push the liquid in the central region to flow upward and downward respectively, forming vertical convection. At the same time, under the shearing action of the rotation of these two blades, local vortices are generated, breaking the stratification of the liquid and achieving uniform mixing of the liquid in the central region.

[0030] Inner wall area of ​​the mixing cylinder: When the driven shaft revolves, it drives the upper propeller blade assembly to make a circular motion around the central axis of the mixing cylinder, which can cover the entire circumferential area of ​​the inner wall of the mixing cylinder; at the same time, the propeller blade assembly rotates in the opposite direction with the driven shaft, generating radial stirring force, scraping up the liquid adhering to the inner wall of the mixing cylinder and entraining it into the mainstream liquid, eliminating the flow dead zone near the inner wall of the mixing cylinder, and ensuring that the liquid in the inner wall area participates in the mixing.

[0031] Bottom area of ​​the mixing cylinder: When the driven shaft revolves around the sun and rotates in the opposite direction, the lower spiral blade #3 moves synchronously. The spiral blade #3 penetrates deep into the bottom area and stirs the liquid at the bottom by rotating, which can effectively prevent the precipitation of particulate or viscous components in the liquid and ensure that the liquid at the bottom and the liquid at the top are fully mixed.

[0032] III. Usage Method

[0033] This invention can adopt a corresponding workflow based on the characteristics of the traditional Chinese medicine liquid (containing / without dregs, high viscosity / thinness), as follows:

[0034] (a) Stirring and mixing of medicinal residue and liquid containing a large amount of coarse particles

[0035] (1) Place the integrated module of the fixing sleeve and the support legs on a horizontal platform and check whether the silicone anti-slip pads on the bottom of the three support legs are in stable contact with the platform to avoid vibration and displacement during the mixing process. Slowly put the mixing cylinder into the fixing sleeve, keeping the mixing cylinder vertical during the process, and ensure that the gap between the outer wall of the mixing cylinder and the side wall of the fixing sleeve is uniform (0.5-1mm) without jamming or friction; after the bottom of the mixing cylinder is stably attached to the silicone pad at the bottom of the fixing sleeve, check through the observation window on the side wall of the fixing sleeve to confirm that the scale lines of the mixing cylinder are not obstructed.

[0036] (2) Align the liquid receiving pipe with the stepped through hole at the bottom of the mixing cylinder, and screw the external thread at the top of the liquid receiving pipe with the internal thread of the through hole to connect them; during the screwing process, ensure that the fluororubber O-ring #2 on the top end face of the liquid receiving pipe is evenly compressed by the sealing retainer to form a sealing interface.

[0037] (3) Place the annular bracket of the coarse filter on the top end face of the mixing cylinder, and place the fine filter on the step of the stepped through hole at the bottom of the mixing cylinder; add the medicine liquid containing dregs to be mixed into the mixing cylinder through the scale line on the outside of the mixing cylinder. When the medicine liquid passes through the coarse filter, large particles of dregs are filtered and retained; after the medicine liquid is added, use the handle to remove the coarse filter at the top of the mixing cylinder to avoid the dregs from accumulating and entangled in the stirring components and clogging the fine filter during the stirring process.

[0038] (4) Align the integrated module consisting of the stirring assembly, the top cover, the middle cover with the integrally molded support plate and the annular toothed groove with the top of the mixing cylinder, and slowly tighten the connection by means of the external thread on the outer wall of the mixing cylinder and the internal thread on the inner wall of the middle cover; apply force evenly when tightening to ensure that the fluororubber O-ring #1 on the top end face of the mixing cylinder is pressed and sealed.

[0039] (5) Set the motor speed through the external controller (adjust according to the viscosity of the medicine liquid; generally, the speed can be set to 300-500 r / min for thin medicine liquid and 150-300 r / min for slightly viscous medicine liquid), start the vertical motor, and the device will stir according to the working principle described above. During the stirring process, observe the mixing state of the medicine liquid through the glass mixing cylinder. After the medicine liquid reaches a uniform mixing effect (generally stir for 5-10 minutes, which can be adjusted according to the amount of medicine liquid), turn off the motor.

[0040] (6) Open the electric valve on the receiving pipe through the controller. The well-mixed medicine solution is filtered through the fine filter screen and flows into the receiving pipe through the stepped through hole. After the liquid is collected at the lower end of the receiving pipe, it is poured into the external container. After the medicine solution has completely flowed out, close the electric valve.

[0041] (7) Unscrew the connecting thread between the middle cover and the mixing cylinder, and clean the drive wheel, driven planetary gear, drive shaft, driven shaft, spiral blade, propeller blade assembly, mixing cylinder, fine filter screen, liquid receiving pipe, sealing ring 1#, and sealing ring 2# to ensure that there is no drug residue in each component for easy use next time.

[0042] (II) Stirring and mixing of viscous medicinal solution (without residue)

[0043] Because the medicinal liquid is viscous and contains no residue, there is no need to install coarse and fine filters. Simply add the viscous medicinal liquid to be mixed into the mixing cylinder by observing the scale line on the outside of the mixing cylinder. Therefore, step (3) of "medicinal liquid containing a large amount of coarse residue" is omitted. The remaining steps are the same as the corresponding steps of "medicinal liquid containing a large amount of coarse residue". Note that the stirring speed should be adjusted to a low speed (50-150 r / min) to avoid high-speed stirring causing the viscous medicinal liquid to splash or excessive stirring resistance to damage the motor; the stirring time can be appropriately extended (8-15 min) to ensure that the viscous medicinal liquid is fully mixed.

[0044] IV. Beneficial Effects

[0045] (i) Significantly improved mixing uniformity

[0046] The driven shaft achieves "revolution + reverse rotation" through a planetary gear transmission structure. Combined with the reverse-positioned helical blades of the drive shaft, a multi-directional stirring mode of "central convection + inner wall scraping + bottom anti-sedimentation" is formed. This effectively solves the problems of local sedimentation and component stratification caused by the unidirectional stirring of existing devices. Whether it is a medicine containing suspended particles or a viscous medicine, it can achieve ideal mixing uniformity, ensuring consistent efficacy of the medicine each time it is taken, which meets the core requirements of TCM clinical practice for medicine mixing.

[0047] (ii) Highly adaptable, meeting diverse drug solution needs

[0048] Residue adaptability: With detachable coarse and fine filters, it can flexibly handle medicine solutions with and without residue. The coarse filter filters out large particles of residue to prevent them from tangling with the stirring components, while the fine filter ensures that the final medicine solution is free of small impurities. Medicine solutions with different residue contents can be processed without replacing the stirring components.

[0049] Viscosity adaptation: The motor speed can be adjusted within the range of 0-500r / min. High-viscosity liquids are stirred at low speed to avoid splashing and motor overload, while dilute liquids are stirred at high speed to improve mixing efficiency, solving the problem that existing fixed structure stirring components cannot adapt to liquids of different viscosities.

[0050] (III) Highly practical and applicable to a wide range of scenarios

[0051] The device has a stable overall structure, with support legs providing stable support and no obvious vibration during the stirring process; the electric valve controls the flow of the medicine, ensuring precise operation and avoiding spillage caused by manual pouring; it can be widely used in TCM clinical departments, pharmacies, and TCM preparation rooms for mixing medicines that have been boiled multiple times, meeting the needs of different scales of medicine mixing, and has extremely high practical application value. Attached Figure Description

[0052] Figure 1 This is a schematic diagram of the structure of the present invention.

[0053] Figure 2 This is a schematic diagram of the transmission component of the present invention.

[0054] Figure 3 This is a schematic diagram of the stirring component of the present invention.

[0055] Figure 4 This is a schematic diagram of the support plate of the present invention.

[0056] Figure 5 This is a schematic diagram of the structure used in the present invention to process large pieces of medicinal residue.

[0057] Figure 6 This is a schematic diagram of the fixing sleeve and support leg structure of the present invention.

[0058] Figure 7This is a schematic diagram of the fixing sleeve structure of the present invention.

[0059] Figure 8 This is a magnified view A of a portion of the present invention.

[0060] Figure 9 This is a magnified view (B) of the present invention.

[0061] Reference numerals: Top cover 1, Air hole 101, Middle cover 2, Support plate 201, Central through hole 202, Annular guide rail cavity 203, Annular toothed groove 204, Mixing cylinder 3, Support leg 4, Driven planetary gear 5, Driving gear 6, Driving shaft 7, Helical blade 1# 701, Reverse helical blade 2# 702, Driven shaft 8, Propeller blade assembly 801, Helical blade 3# 802, Shaft end lug 803, Fine filter screen 9, Electric valve 10, Liquid receiving pipe 11, Coarse filter screen 12, Vertical motor 13, Shaft hub 14, Fixing sleeve 15, Observation window 1501, Sealing ring 1# 16, Sealing ring 2# 17, Sealing retainer ring 18 Detailed Implementation

[0062] To make the purpose, technical solution and effects of this utility model clearer and more explicit, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0063] Example 1: Application of stirring and mixing of medicinal residue and liquid containing a large amount of coarse particles

[0064] This embodiment is applicable to scenarios involving multiple decoctions and mixing of fibrous medicinal residues such as Astragalus membranaceus and Angelica sinensis. For example, in traditional Chinese medicine clinical practice, when preparing 7 doses of Chinese medicine for a patient, each dose needs to be thoroughly mixed after decoction. The total volume of the mixed liquid in a single batch is approximately 1500-2000 mL. The specific implementation process is as follows:

[0065] I. Device Composition and Parameters

[0066] (1) Support components

[0067] 1. Top cover 1: Made of 304 stainless steel, with an outer diameter of 180mm and a thickness of 10mm. The lower part of the inner wall is provided with external threads to fit with the middle cover 2. Four 12mm diameter air holes 101 are opened on the top, which are evenly distributed in a circle for heat dissipation of the vertical motor 13.

[0068] 2. Middle cover 2: Made of 304 stainless steel, with an outer diameter of 180mm and a height of 50mm; the upper part of the inner wall is provided with an internal thread that matches the upper cover 1, and the lower part of the inner wall is provided with an internal thread that matches the external thread on the top of the mixing cylinder 3 to achieve a threaded connection; the inner wall annular tooth groove 204 has a module of 2, 60 teeth, and a tooth width of 15mm, and meshes with the driven planetary gear 5; the support plate 201, which is integrally formed with the middle cover 2, has a thickness of 8mm and a central through hole 202 with a diameter of 20mm, and is clearance-fitted with the drive shaft 7 (fit clearance 0.1-0.2mm); the lower annular guide rail cavity 203 of the support plate 201 is adapted to the shaft end lug 803 at the top of the driven shaft 8 (shaft end lug 803 has a diameter of 25mm and a thickness of 3mm, and the driven shaft 8 has a diameter of 15mm).

[0069] 3. Mixing cylinder 3: Made of high borosilicate glass, with an outer diameter of 180mm and a height of 300mm. The inner wall of the top opening has external threads that match the internal threads of the middle cover 2, with a screw-in length of 20mm, ensuring a sealed connection and easy disassembly. A rectangular annular sealing groove is formed on the top end face of the mixing cylinder 3, with a fluororubber O-ring 1#16 embedded inside. When the middle cover 2 is tightened, the sealing ring 1#16 is compressed to form a sealing interface. The outer scale of the cylinder body has a range of 0-2500mL, with a graduation value of 50mL. The bottom stepped through-hole has an upper step diameter of 35mm and a lower step diameter of 25mm, suitable for fine filter screen 9. Both the coarse filter screen 12 and the fine filter screen 9 are made of 304 stainless steel, with mesh sizes of 80 mesh (for trapping dregs with a diameter >0.18mm) and 120 mesh (for trapping impurities with a diameter >0.12mm), respectively, and both are equipped with stainless steel handles. The bottom of the mixing cylinder 3 has a stepped through hole with a sealing ring 18 and an internal thread machined on its inner wall. It is adapted to the external thread connection of the 304 stainless steel liquid receiving pipe 11 to meet the replacement needs in different scenarios.

[0070] 4. Fixing sleeve 15: Made of 304 stainless steel, with an overall cylindrical structure; the bottom is an annular base (annular width 25mm, thickness 5mm, providing stable load-bearing), the side wall height is 100mm (adapting to the mixing cylinder 3 height of 300mm, covering the lower part of the mixing cylinder), the inner diameter of the side wall matches the outer diameter of the mixing cylinder 3 with a gap of 0.5-1mm to ensure smooth insertion of the mixing cylinder; a 5mm thick food-grade silicone pad (shock absorption and anti-slip) is pasted on the bottom annular base of the fixing sleeve 15, and a 2mm thick food-grade silicone ring (buffer and anti-scratch glass) is pasted on the top inner side of the side wall; three observation windows 1501 are evenly opened along the circumference of the side wall, avoiding the scale line area of ​​the mixing cylinder 3, for observing the stirring status and scale value of the liquid; the bottom annular base is welded and fixed to the support leg 4, providing indirect support for the mixing cylinder 3.

[0071] 5. Support Leg 4: Made of 304 stainless steel round tube, 15mm in diameter and 150mm in length. The three support legs are evenly distributed in a 120° circle and are welded to the bottom ring base of the fixing sleeve 15. A 5mm thick silicone anti-slip pad is pasted on the bottom of the support leg 4 to enhance the overall stability of the device and prevent it from tipping over during stirring.

[0072] (2) Stirring assembly

[0073] 1. Vertical motor 13: The output speed is adjustable from 0 to 500 r / min. It is fixed to the top surface of the support plate 201 by 4 M6 bolts. The output shaft is connected to the drive shaft 7 by a coupling.

[0074] 2. Driving gear 6 and driven planetary gear 5: both are made of 45 steel with a module of 2. The driving gear 6 has 20 teeth and the driven planetary gear 5 has 25 teeth. The three driven planetary gears are distributed in a 120° circle. Both the driving gear 6 and the driven planetary gear 5 are fitted with shaft hubs 14 (with inner diameters of 20mm and 15mm respectively) at their upper and lower ends to restrict axial displacement.

[0075] 3. Driven shaft 7 and driven shaft 8: Both are made of 45 steel. The diameter of drive shaft 7 is 20mm and the diameter of driven shaft 8 is 15mm. The upper helical blade 1#701 of drive shaft 7 is left-handed, with a pitch of 40mm, a blade width of 12mm, and 2 blades. The lower reverse helical blade 2#702 is right-handed, with a pitch of 35mm, a blade width of 12mm, and 2 blades. The upper propeller blade group 801 of driven shaft 8 consists of 3 groups, each with 3 blades (blade width 15mm), with a spacing of 30mm between adjacent groups, and a distance of 3mm between the blade tip and the inner wall of mixing cylinder 3. The lower helical blade 3#803 of driven shaft 8 is right-handed, with a pitch of 30mm, a blade width of 12mm, and 1 blade. The bottom of the blade is 15mm away from the bottom of mixing cylinder 3.

[0076] (3) Liquid collection assembly

[0077] 1. Liquid receiving pipe 11: Made of 304 stainless steel, with an upper diameter of 25mm and a length of 35mm, it is threadedly connected to the stepped through-hole at the bottom of the mixing cylinder 3. The top of the liquid receiving pipe 11 has an external thread, and a rectangular annular sealing groove is formed on the top end face of the liquid receiving pipe 11. A fluororubber O-ring 2#17 is embedded in the sealing groove. When tightened with the internal thread of the stepped through-hole, the O-ring 2#17 is compressed by the sealing retainer ring 18 to form a sealing interface. The lower part of the liquid receiving pipe 11 tapers, with an outlet diameter of 15mm for easy flow convergence.

[0078] 2. Electric valve 10: Model is a miniature solenoid valve with an interface diameter of 25mm. It is connected in series with the liquid receiving pipe 11 and electrically connected to an external PLC controller through a wire to realize on / off control.

[0079] II. Usage Method

[0080] (1) Assembly and pretreatment of the device

[0081] 1. Integrated module assembly of fixed sleeve and outrigger

[0082] Place the pre-welded "fixed sleeve 15 + support leg 4" module (the three support legs have been welded to the bottom annular base of the fixed sleeve at 120°) on a horizontal platform and check: ① whether the silicone anti-slip pads at the bottom of the support legs are flat and fit well (no air bubbles, no misalignment); ② whether the silicone pads at the bottom of the fixed sleeve are intact; ③ whether the silicone rings at the top of the side walls are undamaged.

[0083] 2. Mixing cylinder and fixed assembly

[0084] Slowly and vertically place the mixing cylinder 3 into the fixing sleeve 15, ensuring that the gap between the outer wall of the mixing cylinder and the side wall of the fixing sleeve 15 is uniform (without jamming or friction) during the placement process; after the bottom of the mixing cylinder is stably attached to the silicone pad at the bottom of the fixing sleeve 15, check through the observation window 1501 on the side wall of the fixing sleeve 15 whether the scale lines of the mixing cylinder 3 are clearly visible (without obstruction).

[0085] 3. Installation of liquid collection assembly

[0086] Align the liquid receiving pipe 11 (with a fluororubber O-ring 2#17 on its top end face) with the stepped through hole at the bottom of the mixing cylinder 3, and slowly screw it in with the external thread at the top of the liquid receiving pipe and the internal thread of the through hole. After installation, check whether the liquid receiving pipe is vertical and whether the sealing ring 2#17 is evenly compressed (no risk of leakage).

[0087] 4. Addition of medicine

[0088] Place the fine filter screen 9 on the upper step of the stepped through hole at the bottom of the mixing cylinder 3 (with the edges touching), and then place the coarse filter screen 12 on the top end face of the mixing cylinder 3 (with the handle facing outwards). Pour in 7 batches of the medicine solution containing drug residue (total volume 1800mL) through the scale line on the outside of the mixing cylinder. After the medicine solution is filtered by the coarse filter screen 12, large particles of drug residue are trapped. After the medicine solution is added, hold the handle and remove the coarse filter screen 12 (to clean the drug residue and avoid tangling the components during stirring).

[0089] 5. Interconnection of the mixing component module

[0090] Align the integrated module of "stirring assembly + top cover 1 + middle cover 2 (including support plate 201 and annular toothed groove 204)" with the top of the mixing cylinder 3, and tighten the connection between the external thread of the outer wall of the mixing cylinder 3 and the internal thread of the inner wall of the middle cover 2; apply force evenly when tightening to ensure that the fluororubber O-ring 1#16 on the top end face of the mixing cylinder 3 is pressed and sealed; finally check the overall levelness of the device (confirm that the mixing cylinder is not tilted through the observation hole).

[0091] III. Working Methods

[0092] 1. Parameter setting: Set the speed of vertical motor 13 to 250r / min through the external PLC controller (because the viscosity of the medicine liquid containing dregs is moderate, this speed can balance the mixing efficiency and the effect of preventing dregs from tangling), set the stirring time to 8min, and set the electric valve 10 to the initial state of closed.

[0093] 2. Stirring Operation: Start the vertical motor 13. The output torque of the motor 13 is transmitted to the drive shaft 7 through the coupling, causing the drive shaft 7 to rotate clockwise around its own axis. The drive wheel 6 rotates clockwise synchronously with the drive shaft 7. Because the three driven planetary gears 5 are respectively engaged with the drive wheel 6 and simultaneously engaged with the annular toothed groove 204 on the inner wall of the middle cover 2, under the driving force of the drive wheel 6 and the meshing constraint of the annular toothed groove 204, the driven planetary gears 5 revolve clockwise around the central axis of the drive shaft 7 (i.e., the central axis of the mixing cylinder 3) and rotate counterclockwise around their corresponding driven shaft 8 central axis, ultimately realizing the composite motion of "revolution + counterclockwise rotation" of the driven shaft 8. When the drive shaft 7 rotates, the upper left-hand spiral blade 1#701 pushes the liquid in the central area upward, and the lower right-hand reverse spiral blade 2#702 The central region of the liquid medicine is pushed downwards, forming an upward and downward convection. At the same time, the shear force generated by the rotation of the two types of blades causes the liquid medicine to form a local vortex, breaking the stratification of the liquid medicine. When the driven shaft 8 revolves, it drives the upper propeller blade group 801 to move circumferentially along the inner wall of the mixing cylinder 3, covering the entire inner wall area. The radial stirring force generated by the synchronous rotation scrapes up the liquid medicine adhering to the inner wall and rolls it into the mainstream liquid medicine, eliminating the dead zone of flow. The spiral blade 3#803 at the bottom of the driven shaft 8 goes deep into the bottom of the mixing cylinder 3 with the compound motion, rotating and stirring the liquid medicine at the bottom, effectively preventing the sedimentation of the residue. During the stirring process, the state of the liquid medicine can be observed through the observation window 1501 of the transparent high borosilicate glass mixing cylinder 3 and the fixed sleeve 15. If local residue accumulation is found, the motor speed can be finely adjusted (±20r / min) by the controller to ensure uniform mixing.

[0094] 3. Drug solution collection: After the stirring time is over, the motor 13 automatically stops running; the controller sends an opening command, the electric valve 10 is energized and opened, the well mixed drug solution is filtered through the fine filter screen 9 (to intercept small drug residues and impurities), and flows into the receiving pipe 11 through the bottom stepped through hole. After converging through the lower conical outlet of the receiving pipe 11, it is slowly injected into the sterile glass bottle; when the drug solution in the glass bottle reaches the scale line and there is no drug solution residue in the mixing cylinder 3, the controller sends a closing command, the electric valve 10 is de-energized and closed, and the drug solution collection is completed.

[0095] 4. Device Cleaning: Hold the anti-slip texture on the outside of the middle cover 2 (anti-slip ridges can be machined on the outer wall of the middle cover 2 for easy application of force), rotate the middle cover 2 counterclockwise to gradually separate it from the mixing cylinder 3 until it is completely unscrewed. Disassemble and clean the liquid collection assembly, fine filter screen 9, and sealing ring 1#16; vertically remove the mixing cylinder 3 from the fixing sleeve 15. At this time, the mixing cylinder 3 can be removed separately for cleaning and drying; clean the fine filter screen 9, sealing ring 1#16, liquid receiving pipe 11, sealing ring 2#17, driving wheel 6, driven planetary wheel 5, driving shaft 7, driven shaft 8, and each blade. Rinse the surface residue with purified water, and wipe with a soft cloth if necessary. After cleaning, dry all parts. After the mixing cylinder 3 is dry, the middle cover 2 and the mixing cylinder 3 can be screwed back together; the fixing sleeve 15 and the support leg 4 integrated module should only have their side walls and observation window 1501 rinsed with purified water (to avoid residual liquid), and then dried for later use.

[0096] Example 2: Application of stirring and mixing of viscous medicinal liquid (without residue)

[0097] This embodiment is applicable to the mixing of highly viscous traditional Chinese medicine liquids containing donkey-hide gelatin and honey, such as when a traditional Chinese medicine pharmacy prepares a tonic liquid. The total mixing volume in a single batch is approximately 1200 mL, and the viscosity of the liquid is approximately 500 mPa·s. The specific implementation process is as follows:

[0098] I. Device Composition and Parameters

[0099] The device composition in this embodiment is basically the same as that in Embodiment 1, except that the following parameters are adjusted for the characteristics of the viscous liquid, and the threaded connection structure between the middle cover and the mixing cylinder remains unchanged:

[0100] 1. Stirring assembly: The speed setting range of the vertical motor 13 is adjusted to 50-150 r / min. In this embodiment, 80 r / min is selected (low-speed stirring avoids splashing of viscous medicine and also prevents the motor from being overloaded due to excessive stirring resistance).

[0101] 2. Filter assembly: Since the liquid medicine has no residue, there is no need to install coarse filter screen 12 and fine filter screen 9. The top step and bottom step-type through hole of the mixing cylinder 3 are left empty, which does not affect the stability of the threaded connection between the middle cover and the mixing cylinder.

[0102] 3. Threaded fit between the middle cover 2 and the mixing cylinder 3: Considering that viscous liquid may seep out from the thread gaps, an annular sealing groove with a rectangular cross section is opened on the top end face of the mixing cylinder 3. Fluororubber O-ring 1#16 is embedded in the sealing groove. When the middle cover 2 is tightened, the O-ring 1#16 is compressed to form a sealing interface.

[0103] II. Usage Method

[0104] The method of use is the same as in Example 1, but since the liquid medicine has no residue and is viscous, there is no need to install the coarse filter screen 12 and the fine filter screen 9. The viscous liquid medicine to be mixed is added directly into the mixing cylinder 3 by observing the scale line on the outside of the mixing cylinder 3.

[0105] III. Working Methods

[0106] 1. Parameter settings: Set the vertical motor 13 speed to 80r / min and the stirring time to 12min via the external controller (extend the stirring time to ensure that the viscous liquid is fully mixed and avoid uneven mixing due to poor fluidity). The electric valve 10 is initially set to closed.

[0107] 2. Stirring Operation: After starting the motor 13, the drive shaft 7 drives the reverse spiral blades to rotate. The left-handed blades push the liquid upwards, and the right-handed blades push the liquid downwards. Due to the viscosity of the liquid, the convection speed is relatively slow, but the combined effect of the two types of blades can still form stable convection. When the driven shaft 8 "revolves + rotates in the opposite direction", the upper widened propeller blade group 801 moves closely against the inner wall of the mixing cylinder 3, thoroughly scraping off the viscous liquid adhering to the inner wall and preventing the liquid from solidifying on the cylinder wall. The lower spiral blade 3#803 of the driven shaft 8 rotates slowly, stirring the viscous liquid at the bottom and avoiding the separation of components due to gravity (such as the sinking of the donkey-hide gelatin component). During the stirring process, the state of the liquid is observed through the mixing cylinder 3 and the observation window 1501. If local lumps are found, the stirring time can be appropriately extended (1-2 minutes) until the liquid is in a uniform viscous state.

[0108] 3. Collection of medicinal liquid: After stirring is completed, motor 13 stops; open electric valve 10 through controller. Due to the viscosity of the medicinal liquid, control the valve opening degree to 50% (an electric valve with opening degree adjustment function can be selected) to slow down the flow rate of the medicinal liquid and avoid blockage of receiving pipe 11; align the wide-mouth ceramic jar (to facilitate the inflow of viscous medicinal liquid) with the outlet of receiving pipe 11, and close electric valve 10 when the medicinal liquid in the jar reaches the required amount and there is no residue in mixing drum 3.

[0109] 4. Device cleaning: Rotate the middle cover 2 counterclockwise to open it. Remove the liquid collection component and sealing ring 1#16 for easy cleaning. Take the mixing cylinder 3 out of the fixing sleeve 15. Clean the mixing cylinder 3. After cleaning, invert it to drain. The integrated module of stirring component + middle cover + top cover can be cleaned by using a high-pressure water gun (low-pressure mode) to rinse each transmission component and blade to remove viscous residue. Let it dry and set it aside for later use. After the mixing cylinder 3, sealing ring 1#16, liquid receiving pipe 11, sealing ring 2#17, transmission components and blades are all dry, they are ready for assembly and use.

[0110] Through practical operation verification of the above two embodiments, the device of this utility model can achieve uniform mixing. By disassembling and assembling the filter screen and adjusting the rotation speed, it can separately process medicinal liquid containing dregs (particle diameter ≤5mm) and highly viscous (viscosity ≤1000mPa·s) without replacing the stirring components, and its adaptability is significantly improved; it meets the high-efficiency use needs of TCM clinical practice, Chinese medicine pharmacies and other scenarios.

Claims

1. A mixing device for traditional Chinese medicine liquid based on multi-directional transmission, characterized in that, It includes a support assembly, a stirring assembly, and a liquid collection assembly; the support assembly includes an upper cover (1), a middle cover (2), a support plate (201), a mixing cylinder (3), a fixing sleeve (15), and support legs (4); the stirring assembly includes a vertical motor (13), a planetary gear system, a drive shaft (7), three driven shafts (8), and stirring blades; the liquid collection assembly includes a liquid receiving pipe (11) and an electric valve (10); the fixing sleeve (15) is cylindrical, and its inner diameter of side wall is adapted to the outer diameter of the mixing cylinder (3), and the fixing sleeve (15) is cylindrical. 5) The bottom is an annular base. The bottom annular base of the fixed sleeve (15) is fixedly connected to the support leg (4) to provide indirect support for the mixing cylinder (3) and avoid direct contact between the support leg (4) and the glass mixing cylinder (3); the inner wall of the middle cover (2) is integrally formed with a support plate (201), and the inner wall of the middle cover (2) is provided with an annular toothed groove (204); the support plate (201) is provided with a central through hole (202) for the transmission component to pass through, and the lower part of the support plate (201) is provided with an annular guide rail cavity (203); the vertical The motor (13) is fixed to the top surface of the support plate (201), and the output end of the vertical motor (13) is connected to the top of the drive shaft (7); the planetary gear system includes a drive wheel (6) on the drive shaft (7) and three driven planetary gears (5) respectively fixedly connected to the corresponding driven shafts (8). The three driven planetary gears (5) simultaneously mesh with the drive wheel (6) and the annular tooth groove (204) on the inner wall of the middle cover (2); the drive shaft (7) is provided with helical blades 1# (701) with different rotation directions and helical blades 2# with opposite directions. # (702), helical blade 1# (701) is located on the upper part of the drive shaft (7), and reverse helical blade 2# (702) is located on the lower part of the drive shaft (7); multiple propeller blade groups (801) are spaced apart along the axial direction on the driven shaft (8), and helical blade 3# (802) is provided on the lower part of the driven shaft (8), and helical blade 3# (802) is located in the bottom area of ​​the driven shaft (8); the liquid receiving pipe (11) is connected to the bottom of the mixing cylinder (3), and the electric valve (10) is installed on the liquid receiving pipe (11).

2. The traditional Chinese medicine liquid stirring and mixing device based on multi-directional transmission according to claim 1, characterized in that, The upper cover (1) and the middle cover (2) are detachably connected, and the upper cover (1) is provided with a vent (101) for heat dissipation of the vertical motor (13); the middle cover (2) and the mixing cylinder (3) are detachably connected; the top of the mixing cylinder (3) is provided with a sealing groove for installing the fluororubber O-ring 1# (16), and the bottom of the mixing cylinder (3) is provided with a stepped through hole adapted to the fine filter screen (9), and a sealing retaining ring (18) is provided under the step of the stepped through hole; the mixing cylinder (3) is provided with a measuring scale line; the side wall of the fixing sleeve (15) is evenly provided with multiple observation windows (1501) that avoid the scale line of the mixing cylinder (3) along the circumference; the support leg (4) is provided with three legs, which are evenly distributed in a 120° circumference and are fixedly connected to the annular base at the bottom of the fixing sleeve (15).

3. The traditional Chinese medicine liquid stirring and mixing device based on multi-directional transmission according to claim 2, characterized in that, The upper cover (1) and the middle cover (2), and the middle cover (2) and the mixing cylinder (3) are all threaded connections; the mixing cylinder (3) is made of high borosilicate glass; the fixing sleeve (15) is made of stainless steel, with a food-grade silicone pad pasted on its bottom annular base and a food-grade silicone ring pasted on the inner side of the top of the side wall, and the fitting gap between the fixing sleeve (15) and the mixing cylinder (3) is 0.5-1mm; the support leg (4) is a stainless steel round tube, which is welded and fixed to the bottom annular base of the fixing sleeve (15), and a silicone anti-slip pad is pasted on the bottom of the support leg (4).

4. The traditional Chinese medicine liquid stirring and mixing device based on multi-directional transmission according to claim 1, characterized in that, The stirring assembly achieves multi-directional transmission through a planetary gear system: a vertical motor (13) drives the drive shaft (7) to rotate, the drive shaft (7) drives the drive wheel (6) to rotate, the drive wheel (6) drives the driven planetary gear (5) to revolve around the drive shaft (7) and rotate in the opposite direction around its own axis, thereby driving the driven shaft (8) to revolve and rotate synchronously; the vertical motor (13) can achieve speed adjustment from 0 to 500 r / min through an external controller; the drive wheel (6) and the driven planetary gear (5) are both fitted with hubs (14) to limit their axial displacement at the upper and lower ends.

5. The traditional Chinese medicine liquid stirring and mixing device based on multi-directional transmission according to claim 2, characterized in that, The width and height of the annular guide cavity (203) are adapted to the shaft end lug (803) at the top of the driven shaft (8), and the bottom of the annular guide cavity (203) is provided with an annular interface adapted to the driven shaft (8); the diameter of the shaft end lug (803) is larger than the diameter of the driven shaft (8), the shaft end lug (803) slides along the annular guide cavity (203), and the shaft end lug (803) is limited by the annular guide cavity (203) to prevent the driven shaft (8) from disengaging from the annular guide cavity (203).

6. The traditional Chinese medicine liquid stirring and mixing device based on multi-directional transmission according to claim 4, characterized in that, The helical blade 1# (701) and the reverse helical blade 2# (702) on the drive shaft (7) are located at the upper and lower parts of the drive shaft (7), respectively; the distance between the end of the propeller blade group (801) of the driven shaft (8) and the inner wall of the mixing cylinder (3) is ≥2mm; the helical blade 3# (802) at the lower part of the driven shaft (8) is located at the bottom of the driven shaft (8), and the distance between the helical blade 3# (802) and the bottom of the mixing cylinder (3) is 15mm.

7. The traditional Chinese medicine liquid stirring and mixing device based on multi-directional transmission according to claim 1, characterized in that, The liquid receiving pipe (11) is threaded to the stepped through hole at the bottom of the mixing cylinder (3), and the top end face of the liquid receiving pipe (11) is provided with a sealing groove for installing the fluororubber O-ring 2# (17); the electric valve (10) is electrically connected to the external controller; the lower end of the liquid receiving pipe (11) is constricted.

8. The traditional Chinese medicine liquid stirring and mixing device based on multi-directional transmission according to claim 1, characterized in that, The stirring assembly, together with the top cover (1) and the middle cover (2) containing the support plate (201) and the annular toothed groove (204), constitutes a detachable integrated functional module.

9. The traditional Chinese medicine liquid stirring and mixing device based on multi-directional transmission according to claim 1, characterized in that, It also includes a coarse filter (12) and a fine filter (9); the annular bracket of the coarse filter (12) is placed on the top end face of the mixing cylinder (3), and the fine filter (9) is placed on the step of the stepped through hole at the bottom of the mixing cylinder (3).

10. The traditional Chinese medicine liquid stirring and mixing device based on multi-directional transmission according to claim 9, characterized in that, Both the coarse filter (12) and the fine filter (9) are equipped with cleaning handles.

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