阅读说明：本技术 一种粉料、砂料的级配均化混合装置 (Grading homogenizing and mixing device for powder and sand ) 是由 李邦宪 郑青 孙继亮 褚彪 江凌 刘昊 陈刚 于 2021-08-13 设计创作，主要内容包括：本发明公开了一种粉料、砂料的级配均化混合装置,在所述的回转内筒体的外壁均匀固定有多个内筒长叶片和内筒短叶片,在所述的外筒回转体的内壁均匀固定有多个外筒内螺旋叶片,在所述的外筒回转体的一端设有入料口,另一端设有出料仓,出料仓的侧面设有出料口,所述的外筒回转体通过外筒传动电机带动转动。本发明可以根据不同的混合物料及混合产量来进行调节。实现精确的连续生产要求。在混料过程中产生的含尘风经收尘装置收集净化。物料可以实现该设备在负压下工作,运行中无需水资源和污水处理设施,占地面积小,环保无扬尘点,无粉尘污染,生产环境好,可有效地减轻现有生产设备造成的环境、水和土地污染。(The invention discloses a grading homogenizing and mixing device for powder and sand materials, wherein a plurality of inner barrel long blades and inner barrel short blades are uniformly fixed on the outer wall of a rotary inner barrel, a plurality of outer barrel inner spiral blades are uniformly fixed on the inner wall of an outer barrel rotary body, a feeding port is arranged at one end of the outer barrel rotary body, a discharging bin is arranged at the other end of the outer barrel rotary body, a discharging port is arranged on the side surface of the discharging bin, and the outer barrel rotary body is driven to rotate by an outer barrel transmission motor. The invention can be adjusted according to different mixed materials and mixed output. And the requirement of accurate continuous production is met. The dust-containing air generated in the material mixing process is collected and purified by a dust collecting device. The material can realize that this equipment is worked under the negative pressure, need not water resource and sewage treatment facility in the operation, and area is little, and the environmental protection does not have the raise dust point, and no dust pollution, and the production environment is good, can alleviate environment, water and the soil pollution that current production facility caused effectively.)

1. The utility model provides a gradation homogenization mixing arrangement of powder, sand material which characterized in that: the mixing device comprises an outer barrel revolving body and a revolving inner barrel, wherein the revolving inner barrel is positioned in the outer barrel revolving body, a mixing cavity is formed between the revolving inner barrel and the outer barrel revolving body, a plurality of inner barrel long blades and inner barrel short blades are uniformly fixed on the outer wall of the revolving inner barrel, the inner barrel long blades and the inner barrel short blades are arranged at intervals, a plurality of outer barrel inner spiral blades are uniformly fixed on the inner wall of the outer barrel revolving body, rotating shafts are respectively fixed at two ends of the revolving inner barrel, the rotating shafts respectively penetrate through the outer barrel revolving body, the rotating shaft at one end is connected with a bearing seat I, and the rotating shaft at the other end is sequentially connected with a bearing seat II and an inner barrel transmission motor; one end of the outer barrel revolving body is provided with a feeding port, the other end of the outer barrel revolving body is provided with a discharging bin, a discharging port is arranged on the side surface of the discharging bin, and the outer barrel revolving body is driven to rotate by an outer barrel transmission motor.

2. The grading homogenizing mixing device for powder and sand materials as claimed in claim 1, characterized in that: the outer ring of the outer cylinder revolving body is provided with an outer cylinder wheel belt ring, the outer cylinder transmission motor is connected with an outer cylinder transmission riding wheel, the outer cylinder transmission riding wheel supports the outer cylinder wheel belt ring, the outer cylinder transmission riding wheel is supported through a riding wheel bearing set, and the outer cylinder transmission motor drives the outer cylinder transmission riding wheel to rotate so as to drive the outer cylinder revolving body to rotate.

3. The grading homogenizing mixing device for powder and sand materials as claimed in claim 1, characterized in that: the rotation directions of the outer cylinder rotation body and the rotation inner cylinder body are consistent.

4. The grading homogenizing mixing device for powder and sand materials as claimed in claim 1, characterized in that: the inner cylinder transmission motor is connected with the second bearing seat through a transmission reducer and a transmission coupler.

5. The grading homogenizing mixing device for powder and sand materials as claimed in claim 1, characterized in that: the discharging bin is also provided with a dust removal ventilation opening.

Technical Field

The invention relates to the technical field, in particular to a grading, homogenizing and mixing device for powder and sand materials, which is powder and particle mixing and homogenizing equipment in sand making industries such as machine-made sand, tailing and waste stone utilization, waste concrete recycling and the like, and is also suitable for mixing powder and particle materials in industries such as chemical industry, metallurgy, electric power, mine, pharmacy, rare metals and the like.

Background

In cement production and preparation processes of machine-made sand, air separation equipment and mechanical screening equipment are generally adopted to prepare powdery materials and granular sand stones with certain particle diameter and particle size. When commercial concrete is produced, in order to meet certain strength and performance requirements, powder materials of various particle size components and granular sandstone aggregates of certain size fractions are required to be mixed to produce finished concrete. The technical researches of the sand making industry such as the preparation of machine-made sand in China, the recycling of waste concrete of buildings and waste rocks of tailings are not deep, and the problems of original burying, simple and rough integral process of part of sand making production lines, backward equipment, serious environmental pollution, low automation degree, poor product quality, no high-quality machine-made sand products and the like are mostly adopted. The preparation of the machine-made sand generally adopts a wet process, a semi-dry process and a dry process, but the grading process of the finished machine-made sand does not appear at home at present, according to the preparation process of the machine-made sand, according to the standard of the building sand, semi-finished products with different grain sizes are sorted out when the machine-made sand is prepared, such as coarse sand (the grain size is 2.36-4.75 mm), medium sand (the grain size is 1.18-2.36 mm), fine sand (the grain size is 0.075-1.18 mm), fine powder (less than or equal to 0.075 mm) and the like, when the machine-made sand is prepared, the grain sizes are quantitatively matched according to the grain size content and the actual requirement, so that the reasonable grading of products is realized, and after the invention is applied, the aim of producing the high-quality machine-made sand is achieved. At present, more dry material mixers generally adopt a type of adding blades to a stirring shaft, a transmission unit drives a shaft system and the blades to rotate, materials are mixed and simultaneously pushed forwards until the materials reach an outlet of a mixer, and equipment for adding pneumatic auxiliary mixing is arranged on the basis of the mixing type. However, these types of mixing devices are generally suitable for mixing powder materials, and segregation and uneven mixing of the particles are easily caused. And the abrasion of the granular material to the stirring blades is also very serious. The original mixing technology can not meet the technical requirements of the existing new technology.

Disclosure of Invention

The invention aims to make up the defects of the prior art, and provides a grading homogenizing mixing device for powder and sand, which prepares required sand and stone mixed powder and grains according to the requirements of different concretes on sand and produces high-performance concrete products. The invention expands the process and equipment for producing the machine-made sand in the prior art and solves the problems that the finished product produced by the prior process and equipment has unreasonable gradation, uneven mixture and can not produce high-quality machine-made sand.

The invention is realized by the following technical scheme:

a grading homogenizing and mixing device for powder and sand comprises an outer barrel revolving body and a revolving inner barrel, wherein the revolving inner barrel is positioned inside the outer barrel revolving body, a mixing cavity is formed between the revolving inner barrel and the outer barrel revolving body, a plurality of inner barrel long blades and inner barrel short blades are uniformly fixed on the outer wall of the revolving inner barrel, the inner barrel long blades and the inner barrel short blades are arranged at intervals, a plurality of outer barrel inner spiral blades are uniformly fixed on the inner wall of the outer barrel revolving body, rotating shafts are respectively fixed at two ends of the revolving inner barrel, the rotating shafts respectively penetrate out of the outer barrel, the rotating shaft at one end is connected with a bearing seat I, and the rotating shaft at the other end is sequentially connected with a bearing seat II and an inner barrel transmission motor; one end of the outer barrel revolving body is provided with a feeding port, the other end of the outer barrel revolving body is provided with a discharging bin, a discharging port is arranged on the side surface of the discharging bin, and the outer barrel revolving body is driven to rotate by an outer barrel transmission motor.

The outer ring of the outer cylinder revolving body is provided with an outer cylinder wheel belt ring, the outer cylinder transmission motor is connected with an outer cylinder transmission riding wheel, the outer cylinder transmission riding wheel supports the outer cylinder wheel belt ring, the outer cylinder transmission riding wheel is supported through a riding wheel bearing set, and the outer cylinder transmission motor drives the outer cylinder transmission riding wheel to rotate so as to drive the outer cylinder revolving body to rotate.

The rotation directions of the outer cylinder rotation body and the rotation inner cylinder body are consistent.

The inner cylinder transmission motor is connected with the second bearing seat through a transmission reducer and a transmission coupler.

The discharging bin is also provided with a dust removal ventilation opening.

Materials (powder materials and granular materials) with various components are accurately metered and then are fed into a cavity of a mixer through a feeding port to be mixed. The small spiral blades welded on the inner wall of the outer cylinder rotary body and the long blades and the short blades of the inner cylinder arranged on the rotary inner cylinder are positioned in the mixing cavity. The materials move along with the outer cylinder revolving body under the revolving driving of the outer cylinder revolving body and are in a throwing state after being brought to a certain height, and the spiral small blades on the inner wall of the outer cylinder revolving body divide and push the materials backwards in the process; the long and short blades on the rotary inner cylinder rotate along with the inner cylinder, and the rotating direction of the blades is consistent with that of the outer cylinder. Due to the difference of the rotating speeds of the inner cylinder and the outer cylinder, the long dynamic blade and the short dynamic blade on the inner cylinder can damage the detention area of the powder. Under the combined action of the blades on the inner cylinder body and the outer cylinder body, the mixed materials are fully mixed. The novel mixer combines the common characteristics of an external cylinder independent rotary mixer and an internal stirring shaft type blade stirring mixer. The mixed materials are homogenized and mixed in an annular cavity formed by the stirring shafts of the outer cylinder and the inner cylinder at high strength through various blades. The mixed materials are driven by the outer cylinder body to move along with the inner wall of the cylinder body, a small amount of relative movement exists among the materials in the process, and the materials are only cut by the small spiral blades on the inner wall of the outer cylinder body, so that the mixing and homogenizing effects are not strong. There is an ineffective working area of the outer cylinder rotary mixer. At this moment, the stirring effect that the inside barrel of application gyration drove long, short blade for the material in detention district produces and mixes and the homogenization, thereby can further improve the effect of homogenization. The outer cylinder and the inner cylinder are designed to rotate in the same direction, and the relative speed of the outer cylinder and the inner cylinder is low, so that the abrasion to the blades is low, the relative static state of a detention area of materials in the mixing process is damaged, and the mixing efficiency of the rotary mixer is improved compared with that of a single rotary mixer with the outer cylinder. The novel mixer is particularly suitable for mixing two-component materials with larger mixing ratio difference or multi-component materials, and the mixing efficiency is more obvious. The material mixing device is also suitable for mixing materials with larger particle form difference, such as sand materials, powdery materials and the like, and has more outstanding performance.

The helical blade in the outer cylinder body can promote the materials to be mixed while being mixed, and the materials move backwards until being discharged to the discharging bin. Thereby realizing the effect of continuously feeding and mixing materials.

The transmission riding wheel device of the outer cylinder revolving body is provided with a plurality of riding wheel groups supported by a plurality of points, each riding wheel group has the function of transmitting power, and a plurality of permanent magnet motors are used for driving together to coordinate and synchronously operate.

The invention has the function of speed regulation by the inner cylinder transmission motor, so that different stirring speeds can be adopted according to different materials when being mixed.

The invention contains an independent dust removal vent, and the dust removal vent can be connected with a dust collector, so that the mixer can be free from dust overflow.

The invention also comprises the following functions: and introducing high-temperature hot air to dry the materials in the mixing process, or introducing high-pressure water mist gas to clean and remove dust of the granular materials in the mixing process.

1. The device is suitable for the respective homogenization and mixing of powdery and granular materials, and can also be suitable for the mixing and homogenization of the powdery material and the granular material;

2. the method is suitable for mixing more than 2 materials and occasions with higher requirements on mixing homogenization degree;

3. mixing a plurality of powder and particle materials (more than 2 types), wherein two materials with smaller reference proportion have better homogenization performance; and material segregation and agglomeration of different materials during mixing should be avoided.

4. The homogenizing and mixing space condition is compact, the necessary anti-abrasion treatment can be realized, and the service life of the equipment is longer.

5. The application range is wide, and different requirements of heating and drying or high-pressure water mist dedusting and cleaning and the like based on different powder materials and large granular materials can be met.

6. An integrated system characteristic parameter model is constructed by adopting a method combining big data analysis and machine learning, and key technologies of energy efficiency optimization, intelligent decision and control are researched and developed to realize the self-adaptive intelligent adjustment of the whole system operation parameters.

7. Based on the principle of chain information clustering and fusion analysis, deep analysis is carried out on distributed edge-perceived multi-source data and mass data, and association rules of key equipment monitoring and system operation are disclosed;

8. and a system operation and maintenance platform is established, and intelligent state monitoring on key equipment and a technological process is realized. And aiming at the problems of typical faults, equipment abrasion and the like, a system maintenance instruction manual and maintenance technical parameters are provided.

The invention has the advantages that: the invention has large processing capacity, can realize ultra-large mixing capacity by the rotary outer cylinder cavity;

the invention has strong adaptability to the mixed materials, can mix multi-component powdery materials, can also mix multi-component granular materials, and can mix the granular materials and the powdery materials. Because the mixing device can be introduced with hot air and high-pressure water mist, the materials in dry and semi-dry states can be mixed;

the invention has good homogenization effect on the mixed materials;

when the granular materials are mixed, the wear to equipment is small;

the invention can realize the regulation and control of material flow state, and form the oriented gradation of reclaimed sand based on the characteristics of sand and powder, utilization approach and target products.

Drawings

FIG. 1 is a front sectional view of the present invention;

FIG. 2 is a left side view;

FIG. 3 is a right side view;

fig. 4 is a sectional view of the position of the stirring device.

Detailed Description

As shown in FIGS. 1-4, a device for grading, homogenizing and mixing powder and sand comprises a rotary outer cylinder unit and a rotary inner cylinder stirring unit;

1. the rotary outer cylinder unit comprises: a feeding port 2, an outer barrel revolving body 3, outer barrel internal spiral blades 4 and a dust removal ventilation opening 8; a discharge bin 9 and an outer cylinder wheel belt ring 14; an outer cylinder transmission riding wheel 15; a discharge port 16 and an outer cylinder transmission motor 17; a riding wheel bearing set 18.

The mixed powdery and granular materials are accurately metered, enter the outer barrel revolving body 3 through the feeding inlet 2 of the conveying equipment, move together with the outer barrel revolving body 3 and are thrown down after being taken to a certain height, and are cut by the spiral blades 4 in the outer barrel in the moving process. The material is homogenized in the process of throwing and cutting. The material then enters the discharge bin 9 and is discharged through the discharge outlet 16. The outer race of the outer cylinder rotation body 3 is provided with an outer cylinder pulley band 14 which supports the outer cylinder rotation body 3 and causes the outer cylinder rotation body to move. The outer cylinder transmission riding wheel 15 supports the outer cylinder wheel belt ring 14, is supported by a riding wheel bearing set 18 and is driven by an outer cylinder transmission motor 17. The outer cylinder transmission motor 17 adopts an energy-saving permanent magnet direct-connection variable-speed motor, cancels a speed reducer link, and adopts a novel transmission technology of multi-point transmission and same-frequency linkage. And a dust removal ventilation opening 8 is arranged at the upper part of the discharge bin 9 and is directly connected with a dust collector for treating dust-containing waste gas generated in the material mixing process. The discharge bin 9 is fixed and static, the outer cylinder revolving body 3 moves, mechanical and flexible sealing is adopted between the discharge bin and the outer cylinder revolving body, and the operation is carried out under negative pressure, so that dust leakage and leakage are avoided.

2. The inner cylinder body rotary unit comprises: the bearing block I1 is provided with an inner cylinder long blade 5; an inner cylinder short blade 6, a rotary inner cylinder 7 and a bearing seat II 10; a transmission coupling 11; a transmission reduction device 12; an inner cylinder transmission motor 13;

the bearing seat I1 and the bearing seat II 10 support the inner cylinder rotary unit together. The rotary inner cylinder body 7 is designed into a cylinder body form, and is not a traditional stirring shaft, because the detention area formed by powder and particle materials in the cavity of the outer cylinder body is reduced, the mixing effect is improved. An inner cylinder long blade 5; when the inner cylinder short blade 6 moves along with the rotary inner cylinder 7, the materials to be mixed are stirred and cut, and the maximum homogenization effect is realized. The inner cylinder transmission motor 13 adjusts the speed according to different materials to be mixed by adopting a frequency conversion speed regulation mode.

The powder and granular materials are mixed and homogenized through the common movement of the outer cylinder rotary body 3 and the rotary inner cylinder body 7.

The feeding port 2 is fixed.

The discharge bin 9, the dust removal ventilation opening 8 and the discharge hole 16 are fixed.

3. The working principle is as follows: materials (powder materials and granular materials) with various components are accurately metered and then are fed into a cavity formed by an outer barrel revolving body 3 and a revolving inner barrel body 7 of a mixer through a feeding port 2 to be mixed. Inside the annular mixing chamber including the outer cylinder 3 of gyration and the inner cylinder 7 of gyration: the outer barrel inner spiral blade 4 welded on the inner wall of the rotary outer barrel 3 and the inner barrel long blade 5 and the inner barrel short blade 6 arranged on the rotary inner barrel act together. The mixed materials move along with the rotary outer cylinder body 3 under the rotation of the rotary outer cylinder body 3 and are in a throwing state after being brought to a certain height, the inner cylinder long blade 5 and the inner cylinder short blade 6 on the rotary inner cylinder body rotate along with the rotary inner cylinder body 7, and the rotating direction of the inner cylinder long blade and the rotating direction of the inner cylinder short blade are consistent with that of the outer cylinder rotary body. Due to the difference of the rotating speeds of the outer cylinder rotating body 3 and the rotating inner cylinder 7, the inner cylinder long blade 5 and the inner cylinder short blade 6 on the rotating inner cylinder can damage the retention area of powder, so that the materials are fully mixed. The mixer combines the common characteristics of an external cylinder rotating single rotary mixer and an internal stirring shaft type blade rotary mixer, and the mixed materials are subjected to high-strength homogenization and mixing through various blades in the mixing cavities of the external cylinder rotating body 3 and the rotating internal cylinder 7. The mixed materials move along with the inner wall of the cylinder under the driving of the outer cylinder revolving body 3, and in the process, the materials do not move relatively, and the mixing and homogenizing effects are not strong only through the cutting of the spiral blades 4 in the outer cylinder. There are an ineffective working area of the rotary mixer of the outer cylinder rotary body 3 and a detention area of the powder material. At this time, the stirring of the blades is rotationally driven by the rotary inner cylinder 7, and the action of the long and short blades 5 and 6 of the inner cylinder is utilized, so that the materials in the detention area are mixed and homogenized, and the homogenization effect can be further improved. The outer cylinder rotary body 3 and the rotary inner cylinder body 7 are designed to rotate in the same direction, and the relative speed is low, so that the abrasion to the blades is low, but a detention area in a relatively static state when materials move along with the cylinder bodies is damaged, and the mixing efficiency of the mixer is further improved compared with that of a single outer cylinder rotary mixer. The mixing effect is more obvious when the mixing agent is particularly suitable for mixing materials with large mixing ratio and proportion difference of two components or multiple components. The material mixing device is suitable for mixing materials with larger particle form difference, such as sand materials, powdery materials and the like, and has more outstanding performance.

Because the transmission of the outer cylinder rotary body 3 and the rotary inner cylinder body 7 adopts a frequency conversion speed regulation mode, the adjustment can be carried out according to different mixed materials and mixed output. And the requirement of accurate continuous production is met.

And collecting and purifying dust-containing gas generated in the material mixing process by a dust collecting device. The material can realize clean production.