A new three-layer synergistic stirring head

Abstract

The utility model discloses a novel three -layer cooperation stirring head belongs to mechanical engineering field, a novel three -layer cooperation stirring head, including connecting mechanism, the upper end fixed mounting of connecting mechanism is positive and stirs the mechanism, the central fixed mounting of connecting mechanism is opposite and stirs the mechanism, the lower end fixed mounting of connecting mechanism is dispersed mechanism, the opposite and stirs the mechanism and includes upper loading tray, the surface of upper loading tray is provided with mounting hole, the lower end fixed mounting of upper loading tray is opposite helical blade, the lower end fixed mounting of opposite helical blade is bottom tray, this novel three -layer cooperation stirring head, through setting opposite helical blade and the reverse rotation design of outer layer paddle, will form complex speed gradient and eddy current structure between both, and this flow field interference can promote microcosmic mixing uniformity, through setting serrated dispersion disc edge high -speed rotation, will form high shear rate area in local, increase solid -liquid contact area, is favorable for shortening dissolving mixing time.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering, and in particular to a novel three-layer synergistic mixing head. Background Technology

[0002] The novel three-layer synergistic mixing head, through the coordinated control of three flow fields—axial main flow, middle layer radial shear, and bottom layer turbulent agglomeration—breaks the limitations of traditional mixing heads for single scenarios, making it widely adaptable to the mixing needs of multiple industries. In the coal industry, it can be used for mixing magnetite powder in media tanks and for mixing coal-water slurry. In the chemical industry, for the synthesis of fine chemical intermediates, the upper layer with wide blades diffuses the catalyst, the middle layer enhances reaction contact, and the lower layer prevents wall adhesion, thereby improving reaction yield. When processing polymer materials, the lower layer breaks up packing agglomerates, the middle layer promotes longitudinal circulation, and the upper layer expands the mixing range, solving the problem of intensity fluctuations. For gas-liquid-solid three-phase reactions, it can optimize mass transfer efficiency and is compatible with continuous flow equipment. In the food industry, it can handle high-viscosity foods while taking into account dispersion, emulsification, and anti-coking, and meeting cleanliness requirements. When preparing functional foods, the low-speed structure protects active ingredients and prevents component sedimentation. In addition, in the pharmaceutical industry, for scenarios such as pharmaceutical excipient mixing, biological agent preparation, and new energy battery slurry mixing, the three-layer synergistic design can precisely match the needs, becoming a cross-industry high-efficiency mixing solution.

[0003] Existing stirring heads are mostly single-layer or simple double-layer structures. When processing materials with high viscosity, multiphase components, or high requirements for mixing uniformity and shear efficiency, they often suffer from problems such as insufficient mixing, low mass transfer efficiency, high energy consumption, and limited applicable material range. They are also not easy to assemble and install, causing certain troubles. Therefore, we propose a new type of three-layer synergistic stirring head. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a new type of three-layer synergistic stirring head. By setting three superimposed flow fields, the "dead zone" existing in traditional single flow field stirring can be reduced. From the perspective of fluid mechanics, it is beneficial to improve the macroscopic mixing uniformity. The prefabricated design of the functional components adopts a flange quick-release design to improve the convenience of installation.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A novel three-layer synergistic stirring head includes a connecting mechanism, wherein a forward stirring mechanism is fixedly installed at the upper end of the connecting mechanism, a reverse stirring mechanism is fixedly installed at the center of the connecting mechanism, and a dispersing mechanism is fixedly installed at the lower end of the connecting mechanism.

[0007] The anti-stirring mechanism includes an upper loading plate with mounting holes on its surface. A reverse propeller blade is fixedly mounted on the lower end of the upper loading plate, and a bottom tray is fixedly mounted on the lower end of the reverse propeller blade. By setting the reverse propeller blade to rotate in the opposite direction to the outer blade, a complex velocity gradient and vortex structure will be formed between them. From the perspective of fluid mixing theory, this flow field disturbance can enhance the stretching and folding effect of the fluid and promote micro-mixing uniformity.

[0008] Furthermore, the connecting mechanism includes a connecting rod with a through hole at its lower end. A planetary gear is mounted in the center of the connecting rod, and a fixing screw hole is provided on the surface of the planetary gear. A sealing cover is fixedly mounted on the upper end of the planetary gear, and an upper mounting base is fixedly mounted on the upper end of the planetary gear. By setting up a double mechanical seal, clean nitrogen gas at 0.3-0.5 MPa is introduced into the sealing chamber to form a positive pressure barrier, preventing particulate media such as coal slime and magnetite powder from intruding into the gear meshing surface. The sealing element is made of wear-resistant silicon carbide material, suitable for media temperatures of -20℃ to 120℃.

[0009] Furthermore, the stirring mechanism includes a stirring disc with fixing bolt holes on its surface. A straight blade is fixedly installed on the outer side of the stirring disc, and a straight guide hole is provided on the surface of the straight blade. A rod groove is provided in the center of the stirring disc. The design of the straight guide hole can reduce the hydraulic resistance of the blade during operation.

[0010] Furthermore, the dispersion mechanism includes a sleeve, a dispersion disk is fixedly installed on the outer side of the sleeve, the surface of the dispersion disk is provided with dispersion guide holes, a serrated wave is fixedly installed at the lower end of the dispersion disk, and a connection hole is provided on the surface of the sleeve. By setting the edge of the serrated dispersion disk to rotate at high speed, a high shear rate region will be formed locally. From the perspective of colloidal chemistry, this can effectively destroy the soft aggregates formed by van der Waals forces of solid particles, increase the solid-liquid contact area, and help shorten the dissolution and mixing time.

[0011] Furthermore, the reverse propeller blade is a 45° inclined surrounding structure, and the reverse propeller blade is adapted to the connecting rod.

[0012] Furthermore, the through hole and the sleeve are connected through a connecting hole, and the through hole and the connecting hole are adapted to each other.

[0013] Furthermore, the number of the straight blades is several, and the straight blades are adapted to the stirring disc.

[0014] Furthermore, the sleeve is nested and installed at the lower end of the connecting rod, and the sleeve is adapted to the connecting rod.

[0015] In summary, this utility model has the following beneficial effects:

[0016] 1. By setting the reverse rotation design of the propeller blades and the outer blades, a complex velocity gradient and vortex structure will be formed between them. From the perspective of fluid mixing theory, this flow field interference can enhance the stretching and folding effect of the fluid and promote the uniformity of micro-mixing. When the edge of the serrated dispersion disk rotates at high speed, a high shear rate region will be formed locally. From the perspective of colloidal chemistry, this can effectively destroy the soft agglomerates formed by van der Waals forces of solid particles, increase the solid-liquid contact area, and help shorten the dissolution and mixing time.

[0017] 2. The innovative structure of the new three-layer synergistic mixing head achieves multiple breakthroughs. In terms of energy consumption control, the straight-plate guide holes reduce hydraulic resistance through standardized flow lines, reducing energy consumption by 15%-25% compared to traditional mixing heads. The planetary gear set, through a single motor, enables the middle layer spiral to rotate in the opposite direction, significantly improving mixing efficiency and meeting the energy-saving requirements of high-viscosity materials. The superposition of axial, radial, and circumferential flow fields completely eliminates the "dead zones" present in single-flow-field mixing, improving macroscopic mixing uniformity and solving problems such as uneven dispersion of chemical catalysts and stratification of food components. In terms of adaptability and practicality, it is compatible with materials of various viscosities and multiphase systems, eliminating the need for frequent impeller replacements. Reduced resistance and anti-clogging design extend equipment life, reduce cleaning difficulty, and meet the cleanliness requirements of food and pharmaceutical industries. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure in this embodiment;

[0019] Figure 2 This is a three-dimensional structural diagram of the connecting mechanism in this embodiment;

[0020] Figure 3 This is a three-dimensional structural diagram of the stirring mechanism in this embodiment;

[0021] Figure 4 This is a three-dimensional structural diagram of the anti-stirring mechanism in this embodiment;

[0022] Figure 5 This is a three-dimensional structural diagram of the dispersing mechanism in this embodiment.

[0023] In the diagram, 1. Connecting mechanism; 101. Connecting rod; 102. Through hole; 103. Planetary gear; 104. Fixing screw hole; 105. Upper base; 106. Sealing cover; 2. Forward stirring mechanism; 201. Stirring disc; 202. Fixing bolt hole; 203. Straight blade; 204. Straight blade guide hole; 205. Rod groove; 3. Reverse stirring mechanism; 301. Upper plate; 302. Mounting hole; 303. Reverse propeller blade; 304. Bottom tray; 4. Dispersion mechanism; 401. Sleeve; 402. Dispersion disc; 403. Dispersion guide hole; 404. Serrated wave; 405. Connecting hole. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific part, respectively.

[0026] Reference Figure 1-5 As shown, a novel three-layer synergistic stirring head according to a preferred embodiment of the present invention includes a connecting mechanism 1, a forward stirring mechanism 2 fixedly installed at the upper end of the connecting mechanism 1, a reverse stirring mechanism 3 fixedly installed at the center of the connecting mechanism 1, and a dispersing mechanism 4 fixedly installed at the lower end of the connecting mechanism 1.

[0027] The anti-stirring mechanism 3 includes an upper loading plate 301 with mounting holes 302 on its surface. A reverse propeller blade 303 is fixedly mounted on the lower end of the upper loading plate 301, and a bottom tray 304 is fixedly mounted on the lower end of the reverse propeller blade 303. The reverse propeller blade 303 has a 45° inclined surrounding structure and is adapted to the connecting rod 101. By setting the reverse propeller blade 303 and the outer blade to rotate in opposite directions, a complex velocity gradient and vortex structure will be formed between them. From the perspective of fluid mixing theory, this flow field disturbance can enhance the stretching and folding effect of the fluid and promote micro-mixing uniformity.

[0028] Reference Figure 1-5 As shown, the connecting mechanism 1 includes a connecting rod 101, with a through hole 102 at its lower end. A planetary gear 103 is mounted in the center of the connecting rod 101, and a fixing screw hole 104 is provided on the surface of the planetary gear 103. An upper mounting base 105 is fixedly mounted on the upper end of the planetary gear 103, and a sealing cover 106 is fixedly mounted on the upper end of the planetary gear 103. The through hole 102 and the sleeve 401 are connected through a connecting hole 405, and the through hole 102 and the connecting hole 405 are compatible. By setting a double mechanical seal, clean nitrogen gas of 0.3-0.5MPa is introduced into the sealing chamber to form a positive pressure barrier, preventing particulate media such as coal slime and magnetite powder from intruding into the gear meshing surface. The sealing element is made of wear-resistant silicon carbide material, suitable for media temperatures of -20℃ to 120℃.

[0029] Reference Figure 1-5As shown, the stirring mechanism 2 includes a stirring disc 201. The surface of the stirring disc 201 is provided with fixing bolt holes 202. Straight blades 203 are fixedly installed on the outer side of the stirring disc 201. Straight blade guide holes 204 are provided on the surface of the straight blades 203. A rod groove 205 is provided in the center of the stirring disc 201. There are several straight blades 203. The straight blades 203 are adapted to the stirring disc 201. The design of the straight blade guide holes 204 can reduce the hydraulic resistance when the blades are running.

[0030] Reference Figure 1-5 As shown, the dispersion mechanism 4 includes a sleeve 401, a dispersion disk 402 is fixedly installed on the outside of the sleeve 401, a dispersion guide hole 403 is provided on the surface of the dispersion disk 402, a sawtooth wave 404 is fixedly installed at the lower end of the dispersion disk 402, a connection hole 405 is provided on the surface of the sleeve 401, and the sleeve 401 is nested and installed at the lower end of the connecting rod 101. The sleeve 401 and the connecting rod 101 are adapted to each other. When the edge of the sawtooth dispersion disk 402 rotates at high speed, a high shear rate region will be formed locally. The shear rate is positively correlated with the rotation speed and the tooth size. From the perspective of colloidal chemistry, it can effectively destroy the soft agglomerates formed by van der Waals forces of solid particles, increase the solid-liquid contact area, and help shorten the dissolution and mixing time.

[0031] Specific implementation process: First, connect the connecting mechanism 1 of the stirring head to the variable frequency motor. The planetary gear 103 is directly matched with the variable frequency motor to form a power transmission path. After the variable frequency motor starts, the power is transmitted to the connecting rod 101 through the planetary gear 103, driving the connecting rod 101 to rotate stably. The motor dynamically adjusts the speed according to the viscosity of the material: when the material viscosity is high in the initial stage of stirring, the variable frequency motor outputs a speed adapted to the high viscosity (avoiding power overload) to reduce power loss due to flow field interference caused by speed mismatch; when the material viscosity decreases in the later stage, the motor automatically optimizes the speed to achieve dynamic and efficient power utilization. At the same time, the sleeve 401 of the dispersing mechanism 4 is fixed to the connecting rod 101 through the "connecting hole 405-through hole 102". The forward stirring mechanism 2 is linked to the connecting rod 101 through the rod groove 205 of the stirring disc 201. The reverse stirring mechanism 3 is fixed to the connecting rod 101 through the mounting hole 302 of the upper plate 301 to ensure that the three-layer stirring mechanism moves with the connecting rod 101. 01. The sleeve 401 rotates synchronously, driving the outer dispersion disk 402 to rotate at high speed. The serrated wave 404 at the lower end of the dispersion disk 402 works in conjunction with the dispersion guide hole 403: the serrated edge forms a high shear rate region locally. This high shear force can effectively break the soft agglomerates formed by van der Waals forces of solid particles, breaking the agglomerated particles into fine particles. The dispersion guide hole 403 guides the bottom fluid to flow upward, providing a basis for the subsequent circulation of the upper fluid. At the same time, it increases the contact area between the dispersed particles and the liquid, laying the foundation for shortening the dissolution / mixing time. The stirring disk 201 drives several straight blades 203 to rotate. The structural design of the straight blades 203 makes them form an axial main flow when rotating. This axial flow transports the fine particles dispersed by the dispersion mechanism 4 from the bottom layer to the middle and upper layers. At the same time, it guides the easily suspended materials in the upper layer downward to the bottom layer, effectively eliminating the mixing "dead zones" such as the "upper layer suspension zone" and the "bottom layer settling zone" in traditional stirring.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A novel three-layer synergistic stirring head, characterized in that: It includes a connecting mechanism (1), a forward stirring mechanism (2) is fixedly installed at the upper end of the connecting mechanism (1), a reverse stirring mechanism (3) is fixedly installed at the center of the connecting mechanism (1), and a dispersing mechanism (4) is fixedly installed at the lower end of the connecting mechanism (1). The anti-stirring mechanism (3) includes an upper loading plate (301), the surface of which is provided with mounting holes (302), a reverse propeller blade (303) is fixedly mounted at the lower end of the upper loading plate (301), and a bottom tray (304) is fixedly mounted at the lower end of the reverse propeller blade (303).

2. The novel three-layer synergistic stirring head according to claim 1, characterized in that: The connecting mechanism (1) includes a connecting rod (101), a through hole (102) at the lower end of the connecting rod (101), a planetary gear (103) installed in the center of the connecting rod (101), a fixing screw hole (104) on the surface of the planetary gear (103), an upper mounting base (105) fixedly installed on the upper end of the planetary gear (103), and a sealing cover (106) fixedly installed on the upper end of the planetary gear (103).

3. The novel three-layer synergistic stirring head according to claim 1, characterized in that: The stirring mechanism (2) includes a stirring disc (201), the surface of which is provided with fixing bolt holes (202), a straight blade (203) is fixedly installed on the outer side of the stirring disc (201), the surface of which is provided with a straight guide hole (204), and a rod groove (205) is provided in the center of the stirring disc (201).

4. The novel three-layer synergistic stirring head according to claim 1, characterized in that: The dispersing mechanism (4) includes a sleeve (401), a dispersing disc (402) is fixedly installed on the outside of the sleeve (401), a dispersing guide hole (403) is provided on the surface of the dispersing disc (402), a sawtooth wave (404) is fixedly installed at the lower end of the dispersing disc (402), and a connecting hole (405) is provided on the surface of the sleeve (401).

5. A novel three-layer synergistic stirring head according to claim 1, characterized in that: The reverse propeller blade (303) is a 45° inclined surrounding structure, and the reverse propeller blade (303) is adapted to the connecting rod (101).

6. A novel three-layer synergistic stirring head according to claim 2, characterized in that: The through hole (102) is connected to the sleeve (401) through the connecting hole (405), and the through hole (102) and the connecting hole (405) are adapted to each other.

7. A novel three-layer synergistic stirring head according to claim 3, characterized in that: The number of the straight blades (203) is several, and the straight blades (203) are adapted to the stirring disc (201).

8. A novel three-layer synergistic stirring head according to claim 4, characterized in that: The sleeve (401) is nested and installed at the lower end of the connecting rod (101), and the sleeve (401) is adapted to the connecting rod (101).

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