Multi-stage stirring system
By using a continuous mixing space design and worm gear transmission, the problem of complex structure of multi-stage mixing devices is solved, achieving efficient mixing and simplified maintenance, and improving production efficiency and slurry uniformity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN KERUI INTELLIGENT EQUIP CO LTD
- Filing Date
- 2025-05-08
- Publication Date
- 2026-04-28
AI Technical Summary
Existing multi-stage mixing devices have complex structures, making cleaning and maintenance difficult and affecting production efficiency.
The design employs a continuous mixing space, taking into account the speed differences between different mixing chambers. The synchronous rotation of different mixing rods is achieved through worm gear transmission, simplifying the structure and improving mixing efficiency.
It improves the mass transfer efficiency and slurry delivery rate during the mixing process, simplifies the cleaning and maintenance process, and enhances production efficiency.
Smart Images
Figure CN224167388U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mixing equipment technology, and more specifically, to a multi-stage mixing system. Background Technology
[0002] Multistage mixing plays a crucial role in industrial production, significantly improving material homogeneity and reaction efficiency through phased, multi-level mixing. Compared to single-stage mixing, multistage mixing can be optimized for different mixing stages, such as achieving coarse mixing in the initial stage and fine dispersion in subsequent stages, thus ensuring high uniformity of material composition. This is particularly suitable for complex systems with high viscosity, multiple components, or easy stratification. In the chemical, pharmaceutical, and food industries, multistage mixing effectively enhances mass and heat transfer processes, shortens reaction time, and improves product yield and quality stability. Simultaneously, its modular design enhances process flexibility, adapting to different production scales and material characteristics. While current multistage mixing devices offer advantages in mixing effect and process adaptability, some shortcomings remain. The multistage structure increases equipment complexity, raising manufacturing costs and making maintenance and cleaning more difficult, ultimately impacting production efficiency.
[0003] To address the aforementioned issues, this application proposes a multi-stage mixing device with a simpler and more reliable overall structure, which is easier to clean and maintain, while also improving the uniformity of the slurry. Utility Model Content
[0004] To address the shortcomings of existing technologies, this invention proposes a multi-stage mixing system. This system aims to solve the problems of complex structure and cumbersome cleaning and maintenance associated with existing split-type multi-stage mixing systems, thereby improving mixing efficiency and effectiveness.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A multi-stage mixing system includes a mixing vessel and a mixing assembly, characterized in that: the mixing assembly is disposed above the mixing vessel; the mixing vessel includes a first mixing chamber and a second mixing chamber, the first mixing chamber being a feed chamber and the second mixing chamber being a discharge chamber; a feed pipe is disposed above the first mixing chamber; a discharge pipe is disposed below the second mixing chamber; the mixing assembly includes a drive device, a drive shaft, a first transmission device, a second transmission device, a first mixing rod, and a second mixing rod; the first transmission device is used to drive the first mixing rod to rotate in the first mixing chamber, and the second transmission device is used to drive the second mixing rod to rotate in the second mixing chamber; the cross-section of the mixing vessel is an "∞" shape with a central connection.
[0007] Preferably, the depth of the second mixing chamber in the mixing vessel is greater than the depth of the first mixing chamber.
[0008] Preferably, the drive device includes a motor, which is a common DC motor or a servo motor.
[0009] Preferably, the drive device drives the transmission shaft to rotate through a worm gear structure, wherein the worm is mounted on the power output shaft of the drive device, the worm wheel is mounted in the middle of the transmission shaft and rotates synchronously with the transmission shaft, and the two ends of the transmission shaft are connected to the first transmission device and the second transmission device respectively through a first coupling and a second coupling.
[0010] Preferably, the first transmission device includes a power input shaft, one end of which is fixedly connected to a first coupling, and the other end of which is provided with a worm gear. At the same time, a worm wheel is provided at the upper end of the corresponding first stirring rod. The worm wheel at the upper end of the first stirring rod meshes with the worm gear on the power input shaft inside the first transmission device, converting the rotation output from the transmission shaft to the power input shaft into the rotation of the first stirring rod.
[0011] Preferably, the second transmission device includes a power input shaft, one end of which is fixedly connected to a second coupling, and the other end of which is provided with a worm gear. At the same time, a worm wheel is provided at the upper end of the corresponding second stirring rod. The worm wheel at the upper end of the second stirring rod meshes with the worm gear on the power input shaft inside the second transmission device, converting the rotation output from the transmission shaft to the power input shaft into the rotation of the second stirring rod.
[0012] Preferably, the first stirring rod includes a first stirring shaft and a first stirring blade, with a worm gear fixedly connected to the upper end of the first stirring shaft, and a plurality of first stirring blades fixedly arranged at equal intervals at the lower end of the first stirring shaft; the second stirring rod includes a second stirring shaft and a second stirring blade, with a worm gear fixedly connected to the upper end of the second stirring shaft, and a plurality of second stirring blades fixedly arranged at equal intervals at the lower end of the second stirring shaft.
[0013] Preferably, the first stirring blade and the second stirring blade are staggered in the axial direction of the stirring shaft to avoid structural interference during operation.
[0014] Preferably, the worm gear transmission ratio in the first transmission device is greater than that in the second transmission device, thereby ensuring that the stirring speed of the first stirring rod is greater than that of the second stirring rod during operation.
[0015] Preferably, the worm gear ratio in the first transmission device can be 10:1, and the worm gear ratio in the second transmission device can be 20:1.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] (1) This utility model provides a multi-stage stirring system. This application adopts a continuous stirring space design, which has higher mass transfer efficiency and better effect during the stirring process;
[0018] (2) This utility model provides a multi-stage mixing system that, by designing different mixing speeds in the feed mixing chamber and the discharge mixing chamber, meets the mixing speed requirements of different stages and further improves the conveying rate of the slurry. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 Main view of the multi-stage mixing system of this utility model;
[0021] Figure 2 : Schematic diagram of the overall structure of the stirring device in this practical multi-stage stirring system;
[0022] Figure 3 : A schematic diagram of the spatial positions of the stirring rod and the stirring vessel in the multi-stage stirring system of this utility model.
[0023] Among them, 1. drive device; 2. transmission shaft; 3. second coupling; 4. second transmission device; 5. second stirring rod; 501. second stirring shaft; 502. second stirring blade; 6. stirring vessel body; 601. first stirring chamber; 602. second stirring chamber; 7. discharge pipe; 8. feed pipe; 9. first stirring rod; 901. first stirring shaft; 902. first stirring blade; 10. first transmission device; 11. first coupling; Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0025] like Figure 1-3 As shown, a multi-stage mixing system includes a mixing vessel 6 and a mixing assembly. The mixing assembly is disposed above the mixing vessel 6. The mixing vessel 6 includes a first mixing chamber 601 and a second mixing chamber 602, as shown. Figure 1As shown, the first mixing chamber 601 and the second mixing chamber 602 are cylindrical in shape, with their side walls intersecting and connecting to form an "∞"-shaped cross-section of the mixing vessel body 6. The first mixing chamber 601 is the feed chamber, and the second mixing chamber 602 is the discharge chamber. A feed pipe 8 is located on the upper left side of the vessel body, above the first mixing chamber 601; a discharge pipe 7 is located on the lower right side of the vessel body, below the second mixing chamber 602. Simultaneously, to ensure complete discharge of the slurry, as... Figure 1 The bottom of the stirred tank body 6 shown is designed from light to dark from left to right.
[0026] The stirring assembly includes a drive unit 1, a transmission shaft 2, a first transmission device 10, a second transmission device 4, a first stirring rod 9, and a second stirring rod 5. The first transmission device 10 drives the first stirring rod 9 to rotate, and the second transmission device 4 drives the second stirring rod 5 to rotate.
[0027] The drive unit 1 includes a motor, which can be a regular DC motor or a servo motor.
[0028] The drive unit 1 drives the transmission shaft 2 to rotate through a worm gear structure. The worm is mounted on the power output shaft of the drive unit 1, and the worm wheel is located in the middle of the transmission shaft 2 and rotates synchronously with the transmission shaft 2. The two ends of the transmission shaft 2 are connected to the first transmission device 10 and the second transmission device 4 through the first coupling 11 and the second coupling 3, respectively. With the above structure, when the motor drives the transmission shaft 2 to rotate, it simultaneously drives the first transmission device 10 and the second transmission device 4 to work, so as to realize the synchronous action of the first stirring rod 9 and the second stirring rod 5.
[0029] Furthermore, the first transmission device 10 includes a power input shaft, one end of which is fixedly connected to the first coupling 11, and the other end of which is provided with a worm gear. Simultaneously, a worm wheel is provided at the upper end of the corresponding first stirring rod 9. The worm wheel at the upper end of the first stirring rod 9 meshes with the worm gear on the power input shaft inside the first transmission device 10, converting the rotation output from the transmission shaft 2 to the power input shaft into rotation of the first stirring rod 9. Similarly, the second transmission device 4 includes a power input shaft, one end of which is fixedly connected to the second coupling 3, and the other end of which is provided with a worm gear. Simultaneously, a worm wheel is provided at the upper end of the corresponding second stirring rod 5. The worm wheel at the upper end of the second stirring rod 5 meshes with the worm gear on the power input shaft inside the second transmission device 4, converting the rotation output from the transmission shaft 2 to the power input shaft into rotation of the second stirring rod 5.
[0030] Further, the first stirring rod 9 includes a first stirring shaft 901 and a first stirring blade 902. A worm gear is fixedly connected to the upper end of the first stirring shaft 901, and a plurality of first stirring blades 902 are fixedly arranged at equal intervals at the lower end of the first stirring shaft 901; the second stirring rod 5 includes a second stirring shaft 501 and a second stirring blade 502. A worm gear is fixedly connected to the upper end of the second stirring shaft 501, and a plurality of second stirring blades 502 are fixedly arranged at equal intervals at the lower end of the second stirring shaft 501; for example Figure 2 As shown, in order to avoid interference between the first stirring blade 902 and the second stirring blade 502 during operation, the first stirring blade 902 and the second stirring blade 502 are staggered in the axial direction of the stirring shaft.
[0031] Preferably, the worm gear transmission ratio in the first transmission device 10 is greater than that in the second transmission device 4, thereby ensuring that the stirring speed of the first stirring rod 9 is greater than that of the second stirring rod 5 during operation. Specifically, the worm gear transmission ratio in the first transmission device 10 can be 10:1, and the worm gear transmission ratio in the second transmission device 4 can be 20:1.
[0032] When the mixing device is in operation, the first mixing chamber 601 is used for mixing when materials are added, and the second mixing chamber 602 is used for discharging materials after further mixing and homogenization. The materials are uniformly fed into the feeding mixing chamber through the feeding pipe 8. The feeding mixing chamber has a high mixing speed, and the added materials can be quickly and evenly mixed. The discharging chamber has the same mixing direction as the feeding chamber, but its mixing speed is slower than that of the feeding chamber, so as to further homogenize the materials. Since the mixing speed in the first mixing chamber 601 is higher than that in the second mixing chamber 602, the centrifugal force of the mixed slurry after forming a vortex in the first mixing chamber 601 is greater than that of the slurry in the second mixing chamber 602, thereby realizing the transfer of slurry from the first mixing chamber 601 to the second mixing chamber 602.
[0033] Preferably, since the bottom of the mixing vessel 6 is designed from shallow to deep along the feeding to discharging direction, when the material enters the first mixing chamber 601 through the feeding pipe 88, it is driven by the first stirring rod 9 and can be quickly mixed and enter the second mixing chamber 602 through centrifugal force. The stirring speed of the second stirring rod 5 in the second mixing chamber 602 is reduced, so that the slurry is further mixed evenly. After the mixing is completed, the slurry is discharged through the discharge pipe 7 set at the bottom of the mixing vessel 6 under the action of gravity.
[0034] Compared with the separate multi-stage mixing devices in the prior art, this application adopts a continuous mixing space design, which results in higher mass transfer efficiency and better performance during the mixing process. In addition, by designing different mixing speeds in the feed mixing chamber and the discharge mixing chamber, the mixing speed requirements at different stages are met, and the slurry delivery rate is further improved.
[0035] As can be seen from the accompanying drawings, in the embodiments of this utility model, the fixed connection and relative sliding of each component can be achieved by conventional methods of the prior art. The specific implementation method will not be further described in this utility model specification.
[0036] The embodiments and descriptions above are merely illustrative of the principles and preferred embodiments of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of this utility model as claimed.
Claims
1. A multi-stage stirring system, comprising a stirring vessel (6) and stirring components, characterized in that: The stirring assembly is located above the stirring vessel body (6). The stirring vessel body (6) includes a first stirring chamber (601) and a second stirring chamber (602). The first stirring chamber (601) is a feed chamber, and the second stirring chamber (602) is a discharge chamber. A feed pipe (8) is provided above the first stirring chamber (601), and a discharge pipe (7) is provided below the second stirring chamber (602). The stirring assembly includes a drive device (1), a transmission shaft (2), a first transmission device (10), a second transmission device (4), a first stirring rod (9), and a second stirring rod (5). The first transmission device (10) is used to drive the first stirring rod (9) to rotate in the first stirring chamber (601), and the second transmission device (4) drives the second stirring rod (5) to rotate in the second stirring chamber (602). The stirring vessel body (6) has a cross-section in the shape of an "∞" with a central connection. The drive device (1) drives the transmission shaft (2) to rotate through the worm gear structure. The worm is set on the power output shaft of the drive device (1), and the worm wheel is set in the middle of the transmission shaft (2) and rotates synchronously with the transmission shaft (2). The two ends of the transmission shaft (2) are connected to the first transmission device (10) and the second transmission device (4) respectively through the first coupling (11) and the second coupling (3).
2. The multi-stage stirring system according to claim 1, characterized in that: The depth of the second mixing chamber (602) in the mixing vessel (6) is greater than the depth of the first mixing chamber (601).
3. The multi-stage stirring system according to claim 1, characterized in that: The drive unit (1) includes a motor, which is a common DC motor or a servo motor.
4. The multi-stage stirring system according to claim 1, characterized in that: The first transmission device (10) includes a power input shaft. One end of the power input shaft is fixedly connected to the first coupling (11), and the other end of the power input shaft is provided with a worm gear. At the same time, the upper end of the corresponding first stirring rod (9) is provided with a worm wheel. The worm wheel located at the upper end of the first stirring rod (9) meshes with the worm gear located on the power input shaft inside the first transmission device (10), converting the rotation of the transmission shaft (2) output to the power input shaft into the rotation of the first stirring rod (9).
5. A multi-stage stirring system according to claim 4, characterized in that: The second transmission device (4) includes a power input shaft. One end of the power input shaft is fixedly connected to the second coupling (3), and the other end of the power input shaft is provided with a worm. At the same time, the upper end of the corresponding second stirring rod (5) is provided with a worm wheel. The worm wheel located at the upper end of the second stirring rod (5) meshes with the worm located on the power input shaft inside the second transmission device (4), converting the rotation of the transmission shaft (2) output to the power input shaft into the rotation of the second stirring rod (5).
6. The multi-stage stirring system according to claim 1, characterized in that: The first stirring rod (9) includes a first stirring shaft (901) and a first stirring blade (902). A worm gear is fixedly connected to the upper end of the first stirring shaft (901), and a plurality of first stirring blades (902) are fixedly arranged at equal intervals at the lower end of the first stirring shaft (901). The second stirring rod (5) includes a second stirring shaft (501) and a second stirring blade (502). A worm gear is fixedly connected to the upper end of the second stirring shaft (501), and a plurality of second stirring blades (502) are fixedly arranged at equal intervals at the lower end of the second stirring shaft (501).
7. A multi-stage stirring system according to claim 6, characterized in that: The first stirring blade (902) and the second stirring blade (502) are staggered in the axial direction of the stirring shaft to avoid structural interference during operation.
8. A multi-stage stirring system according to claim 5, characterized in that: The worm gear transmission ratio in the first transmission device (10) is greater than that in the second transmission device (4), thereby achieving a stirring speed of the first stirring rod (9) greater than that of the second stirring rod (5) during operation.
9. A multi-stage stirring system according to claim 8, characterized in that: The worm gear transmission ratio in the first transmission device (10) is 10:1, and the worm gear transmission ratio in the second transmission device (4) is 20:1.