Multilayer spiral stirring type grinding aid mixing device

Abstract

The utility model relates to the technical field of grinding aid mixing, in particular to a multi-layer spiral stirring type grinding aid mixing device, and aims to solve the problems of low mixing efficiency, serious layering and high energy consumption of traditional equipment. The device comprises an upper-layer tank body module, a middle-layer tank body module and a lower-layer tank body module which are detachably connected, a static flow guide plate is arranged on the inner side wall of each module, a plurality of layers of stirring blade modules are mounted in each module, each layer comprises a spiral blade with a specific inclination angle, and three-dimensional vortex mixing is realized through driving rotation of a driving device. Besides, an ultrasonic vibration device is arranged at the bottom of the tank body, agglomerated particles are crushed by utilizing a cavitation effect, the mixing effect is further improved, especially for production of the composite grinding aid with relatively high viscosity, the problem of layering existing in traditional equipment can be effectively solved by adopting the design, and the mixing efficiency can be improved under the condition that energy consumption is not remarkably increased.

Description

Technical Field

[0001] This utility model relates to the field of grinding aid mixing technology, specifically to a multi-layer spiral stirring grinding aid mixing device. Background Technology

[0002] The information disclosed in the background section of this utility model is intended only to enhance the understanding of the overall background of this utility model, and is not necessarily to be regarded as an admission or in any way implying that the information constitutes prior art known to those skilled in the art.

[0003] In the production of cement grinding aids, mixing uniformity is a core indicator affecting product quality. Traditional mixing devices (such as single-layer paddle mixers) mostly have a single mixing structure, which can only achieve two-dimensional mixing. This results in severe material stratification, leading to low mixing efficiency and long mixing times. Furthermore, the density difference between the grinding aid and the raw materials causes stratification and uneven dispersion, resulting in insufficient measured mixing uniformity. Moreover, dead zones exist, making it difficult to lift material from the bottom, forming a sediment layer and affecting the utilization rate of effective components.

[0004] Existing improvement methods, such as increasing stirring speed or optimizing blade shape, can improve mixing speed, but they significantly increase energy consumption and cannot solve the problem of material agglomeration. Therefore, there is an urgent need to develop a low-energy-consumption, high-uniformity grinding aid mixing device. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a multi-layer spiral stirring grinding aid mixing device, which aims to solve the problems of low mixing efficiency, severe stratification, and high energy consumption of traditional equipment.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A multi-layer spiral stirring grinding aid mixing device includes a tank, with an inlet at the top and an outlet at the bottom. A rotatable stirring body is installed inside the tank, and the stirring body is driven to rotate by a driving device.

[0008] The tank body comprises an upper tank module, a middle tank module, and a lower tank module, which are detachably and sealedly connected from top to bottom.

[0009] The inner walls of the upper tank module, the middle tank module, and the lower tank module are all equipped with corresponding static guide plates.

[0010] The mixing body includes an upper mixing blade module, a middle mixing blade module, and a lower mixing blade module, which correspond to the upper tank module, the middle tank module, and the lower tank module, respectively.

[0011] The upper, middle, and lower stirring blade modules each include a corresponding central shaft and helical blades disposed on the side wall of the central shaft. The inclination angle of the helical blades in each stirring blade module increases sequentially from top to bottom, and the central shafts are detachably connected to each other.

[0012] Preferably, the static guide vanes are all spiral guide vanes with an inclination angle of 10~20°.

[0013] Preferably, the helical blade inclination angles of the upper stirring blade module, the middle stirring blade module, and the lower stirring blade module are 25°~35°, 40°~50°, and 55°~65°, respectively.

[0014] Preferably, the static guide plate has an inclination angle of 15°, and the spiral blades of the upper, middle and lower stirring blade modules have inclination angles of 30°, 45° and 60°, respectively.

[0015] Preferably, the upper tank module is provided with a top cover module, and the feed inlet and the drive device are both installed on the top cover module.

[0016] Preferably, the central shaft is a hollow cylindrical shape with a central channel hole, and the end of the central channel hole is provided with a removable cap.

[0017] Preferably, an ultrasonic vibration device is provided at the bottom of the tank.

[0018] Preferably, the ultrasonic vibration device includes an annular piezoelectric ceramic vibratory plate and its mounting housing.

[0019] Preferably, the annular piezoelectric ceramic vibratory feeder is installed at the discharge port end, and the mounting housing is a flange mounting housing.

[0020] Preferably, the inner wall of the flange mounting housing is provided with an annular mounting groove, and the annular piezoelectric ceramic vibratory plate is sealed and installed in the annular mounting groove; the flange mounting housing is also provided with an electrical interface for energizing the annular piezoelectric ceramic vibratory plate.

[0021] The aluminum-clad wood doors and windows of this utility model have at least the following beneficial effects:

[0022] This invention employs a multi-layered helical blade design (upper, middle, and lower layers), with the inclination angle of each layer increasing sequentially. This effectively propels the material in a cyclical motion from top to bottom, achieving a three-dimensional vortex and significantly improving the mixing uniformity and efficiency. Especially for the production of high-viscosity composite grinding aids, this design effectively solves the stratification problem present in traditional equipment, improving mixing efficiency without significantly increasing energy consumption.

[0023] This invention adds an ultrasonic vibration device to the bottom of the tank, which breaks up agglomerated particles with a particle size greater than 50μm through cavitation effect, further improving the mixing quality and efficiency.

[0024] In this invention, the tank body is divided into multiple detachable modules, and the top cover module and the upper tank module are independent units. The stirring body within each tank module is also modularized, making the device suitable for the production of different types of grinding aids. It provides an ideal solution, especially for complex formulations requiring efficient and uniform mixing. Furthermore, the equipment is easy to install, disassemble, and maintain, improving operational flexibility and ease of maintenance. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the overall disassembled structure of this utility model;

[0027] Figure 3 This is a structural schematic diagram of the upper tank module or the middle tank module;

[0028] Figure 4 This is a schematic diagram of the stirring blade module.

[0029] Figure 5 This is a structural schematic diagram of the lower tank module;

[0030] Figure 6 This is a schematic diagram of the internal assembly structure of the lower tank module and the ultrasonic vibration device.

[0031] The reference numerals used in the attached figures are as follows:

[0032] 100. Upper tank module; 110. Upper stirring blade module; 200. Middle tank module; 210. Middle stirring blade module; 300. Lower tank module; 310. Lower stirring module; 320. Ultrasonic vibration device; 321. Flange mounting shell; 322. Annular piezoelectric ceramic vibratory plate; 330. Discharge port; 400. Top cover module; 410. Drive device; 420. Inlet; 500. Static guide plate; 600. Central shaft; 610. Central channel hole; 620. Cover; 700. Spiral blade. Detailed Implementation

[0033] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0034] Example 1

[0035] Figures 1 to 6 A multi-layer spiral stirring grinding aid mixing device is presented, including a tank body, with a feed inlet 420 at the top and a discharge outlet 330 at the bottom. A rotatable stirring body is installed inside the tank body, and the stirring body is driven to rotate by a driving device 410.

[0036] The tank body includes an upper tank module 100, a middle tank module, and a lower tank module 300, which are detachably and sealedly connected from top to bottom.

[0037] The inner walls of the upper tank module 100, the middle tank module and the lower tank module 300 are all provided with corresponding static guide plates 500.

[0038] The mixing body includes an upper mixing blade module 110, a middle mixing blade module 210, and a lower mixing blade module, which correspond to the upper tank module 100, the middle tank module, and the lower tank module 300, respectively.

[0039] The upper stirring blade module 110, the middle stirring blade module 210 and the lower stirring blade module each include a corresponding central shaft 600 and a spiral blade 700 disposed on the side wall of the central shaft 600. The inclination angle of the spiral blade 700 of each stirring blade module increases sequentially from top to bottom. The central shafts 600 are detachably connected to each other.

[0040] The static guide plates 500 are all spiral guide plates with an inclination angle of 10~20°, and the spiral blades 700 of the upper stirring blade module 110, the middle stirring blade module 210 and the lower stirring blade module have inclination angles of 25°~35°, 40°~50° and 55°~65°, respectively.

[0041] In this process, after the material enters the tank, the upper spiral blades 700 push the material downward, the middle spiral blades 700 generate radial shear flow, and the lower spiral blades 700 lift the material at the bottom. The static guide plate 500 transforms the horizontal flow into vertical turbulence, forming a three-dimensional vortex. Thus, through the multi-layer spiral spatial flow field design, this device achieves efficient and low-consumption mixing of cement grinding aids, and is suitable for the production of composite grinding aids with high viscosity.

[0042] The optimal tilt angle for the static guide plate 500 is 15°. The optimal tilt angles for the spiral blades 700 of the upper stirring blade module 110, the middle stirring blade module 210, and the lower stirring blade module are 30°, 45°, and 60°, respectively. In order to reduce material adhesion and improve service life, the surface of the blades is laser-coated with tungsten carbide, and the surface roughness is controlled within the range of Ra≤0.8μm.

[0043] In this embodiment, the upper tank module 100 is provided with a top cover module 400, and the feed inlet 420 and the drive device 410 are both installed on the top cover module 400. In this way, the upper tank module 100 is separated from the top cover, the feed inlet 420, and the drive device 410, making the upper tank module 100 and the top cover module 400 two independent modules, which facilitates modular processing, installation and maintenance.

[0044] In this embodiment, since the stirring blades are spiral-shaped, the diameter of the central shaft 600 should not be too small. Therefore, the central shaft 600 can be a hollow cylinder with a central channel hole 610. The end of the central channel hole 610 is provided with a removable cap 620. This configuration can greatly reduce the weight of the stirring body, thereby reducing energy consumption.

[0045] Example 2

[0046] Based on the above embodiments, this embodiment adds an ultrasonic vibration device 320 to the bottom of the tank. The ultrasonic vibration disk generates a cavitation effect, which can break up agglomerated particles with a particle size >50μm, further improving mixing efficiency and quality.

[0047] The ultrasonic vibration device 320 includes an annular piezoelectric ceramic vibratory plate 322 and its mounting housing. The ultrasonic device can be installed on the outer bottom of the lower tank module 300 or on the inner bottom, with the only difference being the ultrasonic energy loss. The optimal arrangement is that the annular piezoelectric ceramic vibratory plate 322 is installed at the end of the discharge port 330.

[0048] The annular piezoelectric ceramic vibratory feeder 322 is installed as follows: it is mounted via a flange mounting shell 321, the inner wall of which has an annular mounting groove, and the annular piezoelectric ceramic vibratory feeder 322 is sealed and installed within the annular mounting groove; the flange mounting shell 321 is also provided with an electrical interface for energizing the annular piezoelectric ceramic vibratory feeder 322. A polytetrafluoroethylene (PTFE) gasket is placed between the annular piezoelectric ceramic vibratory feeder 322 and the annular mounting groove to prevent material from seeping into the electrical interface.

[0049] In summary, this multi-layer spiral stirring grinding aid mixing device comprises three detachably connected tank modules: upper, middle, and lower. Each module has a static guide plate 500 on its inner wall and multiple layers of stirring blade modules installed inside. Each layer contains spiral blades 700 with a specific inclination angle. A drive device 410 drives the rotation to achieve three-dimensional vortex mixing. Furthermore, an ultrasonic vibration device 320 is installed at the bottom of the tank to break up agglomerated particles using cavitation, further enhancing the mixing effect. Especially for the production of high-viscosity composite grinding aids, this design effectively solves the stratification problem existing in traditional equipment, improving mixing efficiency without significantly increasing energy consumption. It addresses the problems of uneven mixing, high energy consumption, and easy deposition in existing technologies, demonstrating high practical application value.

[0050] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0051] The terms "upper," "lower," "outer," "inner," etc., used in the specification, claims, and accompanying drawings of this utility model, are used to distinguish relative positional relationships and are not necessarily qualitative. It should be understood that such data can be interchanged where appropriate so that embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0052] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-layer spiral stirring type grinding aid mixing device, comprising a tank body, a feeding port is arranged on the top of the tank body, a discharging port is arranged on the bottom of the tank body, a rotatable stirring body is installed in the tank body, and the stirring body is driven to rotate by a driving device; characterized in that: the tank body comprises an upper tank body module, a middle tank body module and a lower tank body module which are sequentially and detachably connected in a sealed manner from top to bottom; a corresponding static flow guide plate is arranged on the inner side wall of each of the upper tank body module, the middle tank body module and the lower tank body module; the stirring body comprises an upper stirring blade module, a middle stirring blade module and a lower stirring blade module which correspond to the upper tank body module, the middle tank body module and the lower tank body module respectively; each of the upper stirring blade module, the middle stirring blade module and the lower stirring blade module comprises a corresponding middle shaft and a spiral blade arranged on the side wall of the middle shaft, the spiral blade angle of each stirring blade module increases sequentially from top to bottom, and the middle shafts are detachably connected.

2. The multi-layer spiral stirring type grinding aid mixing device according to claim 1, characterized in that: the static flow guide plates are all spiral flow guide plates with an inclination angle of 10-20°.

3. The multi-layer spiral stirring type grinding aid mixing device according to claim 2, characterized in that: the spiral blade angles of the upper stirring blade module, the middle stirring blade module and the lower stirring blade module are 25-35°, 40-50° and 55-65° respectively.

4. The multi-layer spiral stirring type grinding aid mixing device according to claim 3, characterized in that: the inclination angle of the static flow guide plate is 15°, and the spiral blade angles of the upper stirring blade module, the middle stirring blade module and the lower stirring blade module are 30°, 45° and 60° respectively.

5. The multi-layer spiral stirring type grinding aid mixing device according to claim 1, characterized in that: the upper tank body module is provided with a top cover module, and the feeding port and the driving device are both installed on the top cover module.

6. The multi-layer spiral stirring type grinding aid mixing device according to claim 1, characterized in that: the middle shaft is a hollow cylindrical structure provided with a central passage hole, and the end of the central passage hole is provided with a detachable cover.

7. The multi-layer spiral stirring type grinding aid mixing device according to any one of claims 1-6, characterized in that: an ultrasonic vibration device is arranged on the bottom of the tank body.

8. The multi-layer spiral stirring type grinding aid mixing device according to claim 7, characterized in that: the ultrasonic vibration device comprises a ring-shaped piezoelectric ceramic vibration disc and a mounting shell thereof.

9. The multi-layer spiral stirring type grinding aid mixing device according to claim 8, characterized in that: the ring-shaped piezoelectric ceramic vibration disc is mounted on the end of the discharging port, and the mounting shell is a flange mounting shell.

10. The multi-layer spiral stirring type grinding aid mixing device according to claim 9, characterized in that: an annular mounting groove is formed in the inner side wall of the flange mounting shell, the ring-shaped piezoelectric ceramic vibration disc is sealingly mounted in the annular mounting groove, and the flange mounting shell is further provided with an electrical interface for electrifying the ring-shaped piezoelectric ceramic vibration disc. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Images