CN87213740U - Electromagnetic high frequency vibrating fine screen - Google Patents

Abstract

The utility model belongs to fine particle material grading equipment, especially for fine particle grading in ferrous metal dressing plants, which can greatly improve the grade of concentrate. Its main technical features are: the vibrator adopts electromagnetic linear high-frequency vibrator; its installation position is at the place where the vibration direction of electromagnetic linear high-frequency vibrator is perpendicular to the screen surface and passes through the center of gravity of the screen box. Angle adjustment bolts. The equipment has the characteristics of simple structure, stable vibration, and adjustable screen inclination angle. Compared with the mechanical high-frequency vibrating fine screen of the same scale, it has the advantages of high classification efficiency, low energy consumption, low cost, safety and reliability.

Description

Electromagnetic high frequency vibrating fine screen

The utility model is suitable for grading or removing slag of fine particle materials in industries such as metallurgy, powder chemical industry and coal washing, especially for fine particle grading in ferrous metal beneficiation plants, which can greatly improve the grade of concentrate.

In the beneficiation process, effective fine-grained classification of minerals is an important measure to improve the grade of concentrates. High-frequency vibrating fine screens are the main type of fine-grained classification equipment. Among the existing high-frequency vibrating fine screens, In terms of power transmission mode, most of them use mechanical high-frequency vibrating fine sieves, such as the Derek fine sieve produced in the United States and the fine sieve developed by the Northeast Institute of Technology in China. Summarizing and analyzing the structure and performance of the above-mentioned types of vibrating fine sieves can be It is found that the power required by the vibrator is realized through mechanical transmission. Due to the existence of a set of mechanical transmission devices, it will inevitably lead to complex equipment structure, increased energy consumption and equipment cost, and brought unsafe factors; The screen surface angle of the sieve is fixed, so the adaptability is poor, and the screen surface angle cannot be adjusted according to the classification needs of fine-grained materials with different properties; in terms of the vibration direction of the vibrating fine screen, Derek Fine Screen and Northeast Institute of Technology developed The vibration direction of the vibrator of the fine sieve is not perpendicular to the sieve surface of the fine sieve. It is known from practice that the sieve holes of this vibrating fine sieve are easily blocked, which affects the classification efficiency and processing capacity.

The utility model can better solve the problems existing in the vibrating fine sieve, and is an improvement on the vibrator of the original vibrating fine sieve, the installation position of the vibrator, the adjustment of the angle of the screen surface and the like.

The utility model is realized in this way: first, the vibrator is replaced with an electromagnetic linear high-frequency vibrator with sufficient supply and reliable technical performance, and the vibrator is fixed on the bottom surface of the screen box. The specific installation position should be an electromagnetic linear high-frequency vibrator The vibration direction should be perpendicular to the screen surface and pass through the center of gravity of the screen box. The screen box is suspended on the frame by means of suspension, and angle adjustment bolts are installed at the suspension of the screen box and the frame.

The improved electromagnetic high-frequency vibrating fine sieve only uses a single electromagnetic linear high-frequency vibrator, which simplifies the mechanical transmission power part of the existing high-frequency vibrating fine sieve, making the structure of the vibration system simple and safe, and the cost is low. and energy consumption are significantly reduced; the installation position of the vibrator ensures that the entire screen surface has the same amplitude, the vibration of the screen box is stable, and the noise is reduced. Since the vibration direction generated by the electromagnetic linear high-frequency vibrator is perpendicular to the screen surface, the screen can pass through the screen The effect is good, the blockage of the screen holes is improved, and the classification efficiency and processing capacity are improved; the suspension structure is adopted between the screen box and the frame, and the angle adjustment bolts for adjusting the angle of the screen surface are installed at the suspension of the screen box. The angle of the surface can be adjusted within the range of ±5°～10° according to the actual needs of the work on the basis of the original design angle, and the best angle for grading materials with different properties and particle sizes can be obtained.

The following is the structural principle diagram of the embodiment of the utility model, and its structure and working principle are further explained with reference to the accompanying drawings.

The screen box (3) is suspended in the middle of the frame (2) in a suspension mode, and the angle-adjusting bolt (4) composed of vibration-damping springs and steel ropes is installed at the suspension joint, and the screen surface (6) composed of nylon 1010 screen grate ) is installed in the screen box (3) according to the angle required by the design, and the lower part of the screen box (3) is provided with an upper ore outlet on the screen and an ore outlet on the lower screen, and the electromagnetic linear high-frequency vibrator (5) is fixed on the screen box The bottom surface of the screen should be installed where the vibration direction generated by the electromagnetic linear high-frequency vibrator (5) is perpendicular to the screen surface (6) and passes through the center of gravity of the screen box (3). When the electromagnetic high-frequency vibrating fine screen is working, firstly, according to the screening requirements, the angle of the screen surface (6) is determined by adjusting the angle-adjusting bolt (4), and then the material is fed from the feed box (1) to the screen box (3) ) The materials on the inner screen surface (6) are dispersed and classified under the action of the electromagnetic linear high-frequency vibrator (5), and the materials complete the screening process from top to bottom along the inclination angle of the screen surface (6). The product enters the upper screen box (7) through the upper discharge port of the screen, and the under-screen product enters the lower screen box (8) through the lower discharge port of the screen.

The electromagnetic high-frequency vibrating fine sieve has simple structure, safety and reliability, stable performance, low energy consumption, high classification efficiency, and the cost is only half of the mechanical high-frequency vibrating fine sieve of the same scale.

Claims (1)

An electromagnetic high-frequency vibrating fine screen used in the mineral processing process, which is composed of a frame, a screen box, a screen surface, and a vibrator. The utility model is characterized in that: the vibrator fixed on the bottom surface of the screen box adopts an electromagnetic linear high-frequency vibrator , the installation position should be such that the vibration direction of the vibrator is perpendicular to the screen surface and passes through the center of gravity of the screen box; the angle adjustment bolt is installed at the suspension between the screen box and the frame.