CN201064776Y - A material classifier - Google Patents

Abstract

The utility model discloses a material grader, comprising a material grading cavity shell; a motor is arranged above the outside of the top surface of the material grading cavity shell, a grading impeller of the motor drive is arranged below the inner of the top surface of the material grading cavity shell, a plurality of impeller blades are arranged at the radial periphery evenly at intervals. Both ends in the axial direction of the grading impeller are equipped with an upper guard plate and a lower guard plate; a high-alumina ceramic sheet is pasted and covered on the inner wall of the material grading cavity, and a layer of polymer based composite is painted and covered on the outer surface of the grading impeller and the impeller blades, thus the damageable parts of the material grader basically have no abrasion; the device has long service life, the cost of operation is greatly reduced; comparing with the steel impeller with the same volume, the utility model has nearly half the weight, and the power of the used dynamic motor is also reduced by nearly one time, thereby the energy saving effect is obvious and the manufactured product has high purity.

Description

A material classifier

technical field

The utility model relates to a material classification machine, in particular to a non-metallic ore processing and classification equipment.

Background technique

With the rapid development of science and technology and the increasing popularity of high-tech products, the consumption of non-metallic mineral products is increasing, especially the consumption of high-quality, high-purity and high-fineness non-metallic mineral products is increasing rapidly. In recent years, the export volume of my country's non-metallic mineral products has been increasing, but the quality of similar products, especially in terms of purity, is still a grade behind the world level. It is for this reason that our prices for similar products in the international market are lower than those of foreign countries. The difference is far, which puts forward higher requirements for the production of non-metallic mineral products. my country is rich in non-metallic ore resources, and there are many non-metallic ore manufacturers, especially non-metallic ore manufacturers with high purity, high fineness and high added value. The production process methods of these manufacturers are roughly the same. The grading equipment used is made of carbon steel materials, and the main disadvantages of the material classifiers made of carbon steel materials are: 1. Serious pollution to processed products; The wear resistance is poor, and a large amount of impurities are ground into the material at any time during use. Although it is impossible to remove 100% by magnetic separation, there are other impurities. In this way, the quality of the product is greatly reduced, and even for some industries, it is a waste product, so that the use of the product is much narrower. 2. High energy consumption; because the main part of the ordinary classifier, the "classification impeller", is made of carbon steel or stainless steel, so the weight is heavy, so the power of the power motor used is large, and the power of the motor used by the same type of equipment is nearly one times larger than that of the new equipment. times. 3. The service life is short; the production equipment used in the current production, especially in the production of high-hardness materials such as quartz sand and potassium albite feldspar, is at most 3-6 months in different frequencies of use Over time, the outer wall of the equipment can be worn through, and the impeller is worn out. 4. The quality of the product is poor and the grade is low; because the whole equipment is not wear-resistant, a large amount of iron and other impurities will inevitably enter the product during the production process, which will lead to a serious decline in product quality even in some demanding industries such as ceramics , electronics and other industries cannot be used.

Contents of the invention

The technical problem to be solved by the utility model is to provide a material classifier with long service life and high purity of the products produced in view of the disadvantages of the existing material classifiers such as easy wear of equipment and poor quality of products produced.

In order to solve the above-mentioned technical problems, the utility model includes a material grading chamber shell, a motor is installed above the top surface of the material grading chamber shell, and a grading impeller driven by a motor is installed below the top surface of the material grading chamber shell. Several impeller blades are evenly spaced around the radial circumference of the impeller, and upper and lower protective plates are arranged at both axial ends of the grading impeller. The outer surfaces of the impeller and its impeller blades are coated with polymer composite materials.

As an improvement to the utility model, the upper and lower protective plates of the grading impeller are made of polymer materials; the high-alumina ceramic sheet is block-shaped, and its thickness is 2.5-3.5mm.

After adopting the above structure, since the inner wall of the material classification chamber is covered with high-alumina ceramic sheets, and the outer surface of the classifying impeller and its impeller blades is coated with polymer composite materials, the vulnerable parts of the material classifier are basically free from wear and the equipment can be used Long service life, the service life is 8-10 times that of similar equipment, and the operating cost is greatly reduced; the rotating part of the equipment, the grading impeller and its impeller blades, are made of composite materials. Compared with the steel impeller of the same volume, the weight is nearly twice as light. The power is also nearly doubled, and the energy saving effect is obvious; because the entire production equipment is fully protected by polymers and high wear-resistant materials, the products produced are high-purity products and can be widely used in high value-added industries (such as: Electronics industry, silicon battery, insulation materials, etc.), can be compared with similar products at the international advanced level.

Description of drawings

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail:

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is an enlarged sectional view of the impeller blade in Fig. 1;

Fig. 3 is a partially enlarged structural schematic diagram of the inner wall of the stage I in Fig. 1 .

Detailed ways

Referring to the accompanying drawings, the material classifier includes a material classifying chamber shell, which constitutes a material classifying chamber 6, and a motor 1 is installed outside and above the top surface of the material classifying chamber shell, and the motor 1 is controlled by a frequency converter to realize the Step speed regulation, so as to meet the requirements of producing materials with different particle sizes. The classifying impeller 2 driven by the motor 1 is installed on the bottom of the top surface of the material classifying chamber. The classifying impeller 2 is located at the top of the material classifying chamber 6. Under the direct drive of the motor, the classifying of materials with different particle sizes is realized through different speeds. All the products are produced through the impeller. The internal cavity of the classifying impeller 2 is connected with the material outlet 8 located above the material classifying chamber casing. The classifying impeller 2 is formed by negative pressure and rotation formed by a fan connected to the material outlet 8. Centrifugal force and other interactions realize the cutting of large-grained materials so that the materials that meet the particle size requirements can pass through smoothly. There is a feed pipe 5 at the lower part of the material classification chamber 6, and the materials to be classified enter the material classification chamber from here. The cavity is fully diffused to prepare for the classification of the grading impeller. The bottom of the material grading chamber 6 is a coarse material feeding device 7. The upper and lower valves of this device are automatically switched alternately, which not only puts the coarse material but also ensures the sealing of the cavity. . A number of impeller blades 3 are evenly spaced around the radial circumference of the grading impeller 2, upper and lower protective plates 4 are arranged at both axial ends of the grading impeller 2, and high-alumina ceramic sheets 9 are pasted on the inner wall of the material grading chamber. The high-alumina ceramic sheet 9 is block-shaped, with a thickness of 2.5-3.5mm and a specification of 10×10mm. It is pasted on the inner wall of the material grading cavity by a high-strength adhesive. The polymer composite material, the impeller blade 3 shown in Figure 2 is coated with a polymer composite material 10 on the outer surface of the steel skeleton 9, so that the impeller blade becomes a composite material impeller blade, compared with the steel impeller with the same volume, the weight is nearly one Times, the polymer composite material is mainly composed of about 80% polyurethane, 15% filler zirconia, 5% silicon carbide and other auxiliary materials such as anti-aging agents. The upper and lower protective plates 4 of the aforementioned classifying impeller 2 are made of polymer materials, and its main components are about 70% polyurethane, about 30% zirconium oxide and silicon carbide filler and other auxiliary materials. In this way, during the production process, the contact between the material to be classified and the metal is avoided. Since the entire production equipment is fully protected by polymers and high wear-resistant materials, the products produced are high-purity products, which improves the wear resistance of the impeller. , prolonging the service life of the impeller and the service life of the inner wall of the material classification chamber.

Claims (3)

1. stock grading machine, comprise the stock grading cavity shell, motor (1) is installed above outside stock grading cavity shell end face, the classifying turbine (2) that is driven by motor (1) is installed below in stock grading cavity shell end face, classifying turbine (2) radially perimembranous evenly is arranged at intervals with some impeller blades (3), classifying turbine (2) axially is provided with upper and lower protective plate (4) in two ends, it is characterized in that being covered with on described stock grading cavity wall high alumina ceramic sheet (9), classifying turbine (2) and impeller blade (3) outer surface thereof are coated with polymer composite.

2. stock grading machine according to claim 1 is characterized in that the upper and lower protective plate (4) of described classifying turbine (2) is made by macromolecular material.

3. stock grading machine according to claim 1 is characterized in that described high alumina ceramic sheet (9) is block, and its thickness is 2.5-3.5mm.

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