CN202667130U - Linear resonance screen surface vibrating screen - Google Patents

Abstract

The utility model provides a linear resonance screen surface vibrating screen, belongs to the field of vibration screening machinery, and aims at solving the problem of deep screening of humid fine coals. The linear resonance screen surface vibrating screen mainly comprises screen boxes, screen surfaces, motors, vibrators and a support frame. An integral screen surface of the vibration screen is composed of the screen surfaces of a plurality of independent vibrating screen boxes through head-to-tail connection. Each screen box is arranged on the support frame through damper springs. The motors are respectively connected with the vibrators arranged on the screen boxes. The screen surface in each screen box is composed of a plurality of linear screen plates which are arranged in parallel. A piece of linear screen bar is wound on a screen plate frame in reciprocating mode to form one linear screen plate. The inclination angle of the screen surfaces of the screen boxes is between 18-25 degrees. The vibration amplitude of the screen surfaces of the screen boxes is between 9-12 millimeters. The vibration frequency of the screen surfaces of the screen boxes is between 890-970 rounds per minute (r/min). The linear screen bars are made of wire ropes or polyurethane bars containing the wire ropes. Aperture ratio of the screen surfaces is high and vibration intensity of the screen surfaces is large, and therefore the linear resonance screen surface vibrating screen can effectively clear away materials clamped in screen seams, enables a screening machine to have high processing volume and high screening efficiency, and can be widely used for screening various humid fine-level materials.

Description

Linear resonance compass screen surface vibratory sieve

Technical field

The utility model belongs to the vibration screening machinery field, mainly relates to carry out moist fine particulate coal the linear resonance compass screen surface vibratory sieve of dry deep-sizing.

Background technology

Screening is an important step in the coal processing and utilization process, the particularly dry deep-sizing of moist fine particulate coal (3mm-13mm), is one of hot issue of world today's screening Science and Technology research.Because coal is in recovery process, owing to the reasons such as coal seam infiltration, the dustproof water spray in down-hole and other mismanagement cause the raw coal free moisture more than 7%, this moist fine particulate coal is because granularity is little, specific area is large, add the existence of the compositions such as free moisture and clay, bonding is agglomerating mutually, be attached to and stop up sieve aperture on the compass screen surface, make the screening effect variation, screening process worsens.Existing flip-flow screening machine, piano wire screen, cascading sieve, single-beam sieve and vibration sieve etc. have all been obtained gratifying achievement in theory and practice, but only are adapted to the screening operation of partition size more than 6mm.Just helpless less than the moist fine particulate coal of 6mm for partition size.So, the vibratory sieve of urgent need a kind of deep screening moist fine particulate coal of exploitation (partition size can reach 3mm).

Summary of the invention

The purpose of this utility model provides a kind of linear resonance compass screen surface vibratory sieve, and this vibratory sieve has solved moist fine particulate coal and carried out the stifled sieve aperture of material that exists in the dry deep-sizing, the difficult problem that treating capacity is little and screening percentage is low.

The utility model is realized by following measures, mainly formed by screen box, compass screen surface, motor, vibrator and bracing frame, it is characterized in that: the whole compass screen surface of vibratory sieve is that the compass screen surface by the screen box of a plurality of Independent Vibrations connects to form from beginning to end, each screen box is installed on the bracing frame by shock-absorbing spring, and motor is connected with vibrator on the screen box; Compass screen surface in each screen box is installed side by side by the polylith linear screen plate and is formed, and every linear screen plate is back and forth twined on the sieve plate framework by the single line grating and forms.The screen angle of screen box is 18-25 °; Amplitude is 9-12mm; Vibration frequency is 890-970r/min; The material of the linear grating on the linear screen plate is steel wire rope or the polyurethane strip that includes steel wire rope.

The beneficial effects of the utility model are, the mass of vibration of whole screen(ing) machine is light, and the percent opening of compass screen surface is high, oscillation intensity is large, the grating of linear screen plate can produce secondary vibration under the once vibration of screen box, can effectively remove the material that is stuck in the sieve seam, makes the treating capacity of screening machine large, screening efficiency is high.Can be widely used in sieving the material of various moist fine particulate levels.

Description of drawings

Fig. 1 is structural representation of the present utility model, and Fig. 2 is the schematic diagram of linear screen plate, and 1 is compass screen surface, the 2nd among the figure, screen box, the 3rd, shock-absorbing spring, the 4th, bracing frame, the 5th, vibrator, the 6th, motor, the 7th, linear screen plate, the 8th, sieve plate framework, the 9th, linear grating.

The specific embodiment

Below in conjunction with a description of drawings embodiment of the present utility model, mainly formed by screen box 2, compass screen surface 1, motor 6, vibrator 5 and bracing frame 4.The whole compass screen surface of vibratory sieve is that compass screen surface 1 head and the tail by the screen box 2 of three Independent Vibrations connect to form, and each screen box 2 is installed on the bracing frame 4 by shock-absorbing spring 3; Motor 6 is connected with vibrator 5 on the screen box 2, makes screen box produce the circular motion track; Compass screen surface 1 in each screen box 2 is installed side by side by four linear screen plates 7 and is formed, and every linear screen plate 7 is back and forth twined on sieve plate framework 8 according to the size of screen size by single line grating 9 and forms, and sieve aperture is 5 millimeters.The screen angle of screen box is 20 ° in the present embodiment; Amplitude is 10mm; Vibration frequency is 920r/min; The material of the linear grating 9 on the linear screen plate 7 is the polyurethane strip that include steel wire rope.

Claims (2)

1. linear resonance compass screen surface vibratory sieve, mainly formed by screen box, compass screen surface, motor, vibrator and bracing frame, it is characterized in that: the whole compass screen surface of vibratory sieve is that the compass screen surface ⑴ by the screen box ⑵ of a plurality of Independent Vibrations connects to form from beginning to end, each screen box ⑵ is installed on the bracing frame ⑷ by shock-absorbing spring ⑶, and motor ⑹ is connected with vibrator ⑸ on the screen box; Compass screen surface ⑴ in each screen box ⑵ is installed side by side by polylith linear screen plate ⑺ and forms, and every linear screen plate ⑺ is back and forth twined on sieve plate framework ⑻ by single line grating ⑼ and forms.

2. linear resonance compass screen surface vibratory sieve according to claim 1, it is characterized in that: the material of the linear grating ⑼ on the linear screen plate ⑺ is steel wire rope or the polyurethane strip that includes steel wire rope.

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