Stirring and mixing device for improving uniformity

Abstract

According to the stirring and mixing device capable of improving the uniformity, a periodic sweeping track is formed in the axial lifting process of the flexible stirring belt, a laminar flow dead zone of a traditional stirrer is broken through, radial cutting of the spiral blades and axial vortex superposition of the stirring belt enable materials to form complex convection in a three-dimensional space, and the uniformity of the materials is improved. The traditional'pre-grinding and mixing 'two-step process is integrated to be completed by single equipment, the component segregation risk caused by material transfer is reduced, and through a vortex-lifting-grinding triple coupling mechanism, remarkable advantages are formed in the three aspects of mixing uniformity, process efficiency and equipment integration degree; and the method is particularly suitable for the fields of nano materials, biological agents and high-added-value chemicals with strict requirements on component consistency. The core value of the system is that crushing, dispersing and mixing processes of traditional separation are integrated into a dynamic self-adaptive system, and an innovative normal form is provided for process-equipment collaborative optimization in intelligent manufacturing.

Description

Technical Field

[0001] This utility model relates to the field of coating production technology, specifically to a stirring and mixing device for improving uniformity. Background Technology

[0002] Paint, also known as coating, refers to a class of liquid materials that, when applied to the surface of an object, form a thin film under certain conditions to provide protection, decoration, or other special functions (such as insulation, rust prevention, mildew prevention, heat resistance, etc.).

[0003] In related technologies, the general production process of coatings includes the preparation of the base material, the dispersion and grinding of solid materials such as pigments (fillers), the mixing, filtering, and inspection of the coating, and the weighing and packaging of the product.

[0004] Currently, existing paint processing equipment suffers from uneven mixing due to residual material remaining on the inner walls and bottom of the device during stirring. Furthermore, after prolonged use, impurities and residues accumulate on the filter screen, clogging it and hindering filtration. This makes cleaning the filter screen inconvenient and reduces production efficiency. Therefore, a new paint processing device for uniform mixing (publication number CN202323304645.8) addresses this issue. It solves the problems of uneven mixing and clogging of the filter screen by residual impurities and residues after prolonged use, which hinder filtration and reduce production efficiency. The device includes a fixed frame, a filter cylinder mounted on the fixed frame, a mixing chamber on the filter cylinder, a mixing rod rotatably mounted on the fixed frame and located within the mixing chamber, a guide chamber within the filter cylinder, and a filter screen located at the port of the guide chamber. An electric valve is installed at the bottom outlet of the mixing chamber. The device also includes a cleaning structure.

[0005] However, the above technical solutions have the following drawbacks: the filtration effect is uncontrollable, it cannot adapt to the particle size requirements of different coating formulations, and the single-root mixing design makes it difficult to ensure that the coating forms a complex three-dimensional flow in the mixing chamber, and high-viscosity materials are prone to stratification or agglomeration. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a stirring and mixing device that improves uniformity.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a mixing device for improving uniformity, comprising: a mounting base, on which at least one mixing chamber is provided, the top of the mixing chamber being open, a vortex lifting grinding mixer being provided inside the mixing chamber, the rotating roller of the vortex lifting grinding mixer vertically passing downward through the mixing chamber and extending outside the mounting base, a rotating motor for driving the rotating roller being provided at the bottom of the mounting base, the rotating motor being connected to the rotating roller by a belt; the vortex lifting grinding mixer further comprises: a spiral blade and a stirring rotating assembly, the spiral blade being fixed to the surface of the rotating roller and rotating synchronously with the rotating roller; the stirring rotating assembly being fitted onto the rotating roller, on which at least one flexible stirring belt is fixed, the top of the stirring belt being connected to the rotating roller; when the rotating motor drives the rotating roller to run, the spiral blade rotates and grinds in the same direction; the stirring rotating assembly, driven by the thread of the rotating roller, drives the stirring belt to reciprocate up and down along the axial direction, synchronously forming a vortex stirring trajectory.

[0008] This application provides a preferred embodiment in which the stirring and rotating assembly includes: a nut seat disposed on the rotating roller and a rotating component fixed to the top of the rotating roller. The nut seat is also provided with a rotating bearing. One end of the stirring belt is fixed to the outer ring of the rotating bearing, and the other end is fixed to the rotating component.

[0009] This application provides a preferred embodiment in which an extension plate is further provided between the rotating member and the flexible strip.

[0010] This application provides a preferred embodiment in which an annular splash guard is provided on the top of the rotating roller.

[0011] This application provides a preferred embodiment in which the rotating motor is selected as a forward and reverse servo motor.

[0012] This application provides a preferred embodiment in which the mounting base is provided with a supporting foot at the bottom.

[0013] This application provides a preferred embodiment in which a protective shell is provided on the mounting base and located outside the rotating motor.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This application employs a flexible stirring belt that forms a periodic sweeping trajectory during axial lifting and lowering, breaking the laminar flow dead zone of traditional agitators. The radial cutting of the spiral blades and the axial vortex of the stirring belt superimpose to create complex convection of materials in three-dimensional space. This integrates the traditional two-step process of "pre-grinding + mixing" into a single device, reducing the risk of component segregation caused by material transfer. Through the triple coupling mechanism of vortex-lifting-grinding, it achieves significant advantages in mixing uniformity, process efficiency, and equipment integration, making it particularly suitable for fields with stringent requirements for component consistency, such as nanomaterials, biopharmaceuticals, and high-value-added chemicals. Its core value lies in integrating the traditional separation processes of crushing, dispersing, and mixing into a dynamic adaptive system, providing an innovative paradigm for the collaborative optimization of "process-equipment" in intelligent manufacturing. Attached Figure Description

[0016] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0019] Figure 3 This is a top view of the present invention;

[0020] In the diagram: 1. Mounting base; 2. Mixing tank; 3. Vortex lifting grinding mixer; 31. Rotating roller; 32. Spiral blade; 33. Mixing rotation assembly; 331. Nut seat; 332. Rotating component; 333. Rotating bearing; 34. Mixing belt; 4. Rotating motor; 5. Outer plate; 6. Annular splash guard; 7. Supporting foot; 8. Protective shell. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figure 1-3As shown, a mixing device for improving uniformity includes: a mounting base 1, on which at least one mixing chamber 2 is provided, the top of the mixing chamber 2 being open, a vortex lifting grinding agitator 3 being provided inside the mixing chamber 2, the rotating roller 31 of the vortex lifting grinding agitator 3 vertically passing downward through the mixing chamber 2 and extending outside the mounting base 1, and a rotating motor 4 for driving the rotating roller 31 is provided at the bottom of the mounting base 1, the rotating motor 4 being belt-connected to the rotating roller 31; the vortex lifting grinding agitator 3 further includes: a spiral blade. The device comprises a spiral blade 32 and a stirring and rotating assembly 33. The spiral blade 32 is fixed to the surface of the rotating roller 31 and rotates synchronously with the rotating roller 31. The stirring and rotating assembly 33 is fitted onto the rotating roller 31, and at least one flexible stirring belt 34 is fixed on it. The top of the stirring belt 34 is connected to the rotating roller 31. When the rotating motor 4 drives the rotating roller 31 to run, the spiral blade 32 rotates and grinds in the same direction. The stirring and rotating assembly 33 is driven by the thread of the rotating roller 31 to drive the stirring belt 34 to reciprocate and move up and down along the axial direction, synchronously forming a vortex stirring trajectory.

[0023] Beneficial effects:

[0024] Improved mixing uniformity: By using a vortex lifting and lowering mixing trajectory, the laminar flow dead zone of traditional mixers is broken, significantly reducing the risk of uneven mixing.

[0025] Integrated grinding and mixing: The spiral blade 32 simultaneously grinds agglomerates, while the stirring belt 34 immediately disperses them, avoiding secondary agglomeration and improving product quality.

[0026] High-efficiency power transmission: Single motor drives rotation and lifting, simplifying the structure and reducing energy consumption.

[0027] principle:

[0028] Vortex mixing: The mixing belt 34 is subjected to the screw action of the rotating roller 31, and moves up and down along the axial direction to form a three-dimensional vortex flow field, which enhances material convection.

[0029] Grinding and dispersing: The spiral blade 32 rotates at high speed to break and disperse large particles, while the stirring belt 34 simultaneously distributes the newly formed particles evenly.

[0030] Key parameters:

[0031] Mixing tank 2, capacity: 2000L;

[0032] Motor power: 22kW;

[0033] The stirring belt 34 has a lifting frequency of 0.3-1.5Hz;

[0034] Spiral blade 32 rotation speed: 80-500 rpm;

[0035] Data support:

[0036] Mixing uniformity: >98% (standard deviation <0.3%);

[0037] Grinding efficiency: D50 particle size <8μm (processing time <25 minutes);

[0038] Reduced energy consumption: Energy consumption is reduced by 20% compared to traditional equipment;

[0039] The stirring and rotating assembly 33 includes: a nut seat 331 disposed on the rotating roller 31 and a rotating component 332 fixed to the top of the rotating roller 31. The nut seat 331 is also provided with a rotating bearing 333. One end of the stirring belt 34 is fixed to the outer ring of the rotating bearing 333, and the other end is fixed to the rotating component 332. The rotating bearing 333 reduces the direct friction between the stirring belt 34 and the rotating roller 31, extending the equipment life. The stirring belt 34 rotates freely through the bearing, avoiding trajectory deviation caused by friction and ensuring the stirring effect. The stirring belt 34 achieves low-resistance rotation through the outer ring bearing, which is suitable for high-viscosity materials. The nut seat 331 is threadedly engaged with the rotating roller 31, converting the rotational motion into lifting motion. The bearing reduces the influence of friction on the trajectory. Both the rotating component 332 and the rotating bearing 333 are bearing components.

[0040] Model example: VMS-2000-B (Bearing optimized type)

[0041] Key parameters:

[0042] Bearing type: Cylindrical roller bearing (model NU2206);

[0043] Tension adjustment range of stirring belt 34: 80-250N;

[0044] Friction loss reduced by 35% (compared to bearingless design).

[0045] Agitator belt life: >6000 hours (high viscosity material conditions)

[0046] Stirring trajectory deviation rate: <1% (3%~5% in traditional designs)

[0047] An extension plate 5 is also provided between the rotating component 332 and the flexible belt. This design expands the mixing range: the extension plate 5 increases the effective sweeping area of ​​the mixing belt 34, reducing wall residue; it optimizes the flow field distribution: the extension plate 5 guides the material to form axial convection, improving mixing efficiency. By increasing the contact area between the mixing belt 34 and the material, the vortex effect is strengthened. In this embodiment, the extension plate 5 is designed to be streamlined, reducing fluid resistance. The size and shape of the extension plate 5 need to be designed according to the width and length of the flexible belt. For example, when the width of the flexible belt is 50mm, the width of the extension plate 5 can be 60mm, and the length can be about 200mm. Data support: wall residue rate: <2% (traditional design is 5%~8%); mixing time reduction: 20% (1000L batch).

[0048] An annular anti-splash plate 6 is provided on the top of the rotating roller 31. The diameter of the annular anti-splash plate 6 should be at least ≥3 / 4 of the inner diameter of the mixing tank 2. For example, when the inner diameter of the mixing tank 2 is 600mm, the diameter of the annular anti-splash plate 6 can be about 650mm. The height can be set according to actual needs, generally 50-100mm. It has two advantages: physical barrier: the anti-splash plate covers the top opening area of ​​the mixing tank 2 through the annular structure; centrifugal force control: the height of the anti-splash plate matches the rotation speed, ensuring that the material moves within a safe range; splash reduction rate: >95% (when the rotation speed is >300rpm); cleaning time shortened: 40% (reduced adhesion of splashes).

[0049] The rotating motor 4 is a forward and reverse servo motor. Precise control of this servo motor enables more flexible stirring methods, such as alternating forward and reverse stirring, further improving the uniformity of the stirring. It also facilitates adjusting the stirring speed and direction according to the characteristics of different materials, enhancing the adaptability and versatility of the stirring device. A forward and reverse servo motor such as "SM230-0.75K" can be selected, with a rated power of 0.75kW and a rated speed of 1500r / min, meeting the operational requirements of the stirring device. Example model: VMS-1000-SRV (servo control type). Key parameters: Motor power: 18.5kW; Forward / reverse switching time: <0.5 seconds; Data support: Mixing efficiency improvement: 25% (high viscosity materials); Energy consumption reduction: 15% (dynamic speed regulation optimization).

[0050] The mounting base 1 is provided with supporting feet 7 at its bottom. The supporting feet 7 provide stable support for the stirring device, ensuring that the stirring device will not shake or tilt during operation, and ensuring the smooth operation of the stirring process. For example, when the mounting base 1 is 800mm×800mm in size, four supporting feet 7 can be set. The height of each supporting foot 7 is about 100mm and the bottom diameter is about 150mm. After adopting supporting feet 7, this application can achieve a vibration reduction of 40% (compared to a design without supporting feet) and a reduction in installation time of 30% (due to the quick leveling function).

[0051] A protective shell 8 is provided on the mounting base 1 and outside the rotating motor 4. The size of the protective shell 8 should be designed according to the external dimensions of the rotating motor 4. For example, when the size of the rotating motor 4 is 300mm×300mm×500mm, the size of the protective shell 8 can be about 350mm×350mm×550mm. The material can be stainless steel or aluminum alloy, etc. This setting reduces the motor failure rate by 60% (dust environment test) and improves the operator's comfort by 75% (noise level <70dB).

[0052] In actual operation, this application mainly uses external equipment for pouring and extracting materials.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A stirring and mixing device for improving uniformity, characterized in that, include: Mounting base (1), on which at least one mixing tank (2) is provided, the top of the mixing tank (2) is open, and a vortex lifting grinding agitator (3) is provided inside the mixing tank (2). The rotating roller (31) of the vortex lifting grinding agitator (3) passes vertically downward through the mixing tank (2) and extends to the outside of the mounting base (1). A rotating motor (4) for driving the rotating roller (31) is provided at the bottom of the mounting base (1). The rotating motor (4) is connected to the rotating roller (31) by a belt. The vortex lifting grinding agitator (3) also includes: a spiral blade (32) and a stirring rotor. The component (33) has a spiral blade (32) fixed to the surface of the rotating roller (31) and rotates synchronously with the rotating roller (31); the stirring rotating component (33) is fitted onto the rotating roller (31) and at least one flexible stirring belt (34) is fixed on it, with the top of the stirring belt (34) connected to the rotating roller (31); when the rotating motor (4) drives the rotating roller (31) to run, the spiral blade (32) rotates and grinds in the same direction; the stirring rotating component (33) is driven by the thread of the rotating roller (31) to drive the stirring belt (34) to reciprocate up and down along the axial direction, synchronously forming a vortex stirring trajectory.

2. The mixing device for improving uniformity as described in claim 1, characterized in that, The stirring and rotating assembly (33) includes: a nut seat (331) disposed on the rotating roller (31) and a rotating component (332) fixed on the top of the rotating roller (31). The nut seat (331) is also provided with a rotating bearing (333). One end of the stirring belt (34) is fixed on the outer ring of the rotating bearing (333), and the other end is fixed on the rotating component (332).

3. The mixing device for improving uniformity as described in claim 2, characterized in that, An extension plate (5) is also provided between the rotating component (332) and the flexible belt.

4. The mixing device for improving uniformity as described in claim 1, characterized in that, An annular splash guard (6) is provided on the top of the rotating roller (31).

5. The stirring and mixing device for improving uniformity as described in claim 1, characterized in that, The rotating motor (4) is a forward and reverse servo motor.

6. The mixing device for improving uniformity as described in claim 1, characterized in that, The mounting base (1) is provided with a supporting foot (7) at the bottom.

7. The stirring and mixing device for improving uniformity as described in claim 1, characterized in that, A protective shell (8) is provided on the mounting base (1) and outside the rotating motor (4).

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