CN202752228U

CN202752228U - Open-type self-synchronizing linear vibrating screen

Info

Publication number: CN202752228U
Application number: CN 201220394875
Authority: CN
Inventors: 杨富强
Original assignee: Shanghai Institute of Electromechanical Engineering
Current assignee: Shanghai Institute of Electromechanical Engineering
Priority date: 2012-08-10
Filing date: 2012-08-10
Publication date: 2013-02-27
Anticipated expiration: 2022-08-10

Abstract

The utility model relates to a screening machine, in particular to an open-type self-synchronizing linear vibrating screen. The open-type self-synchronizing linear vibrating screen comprises vibration motors (1), a frame (2), a sifting bed (5), springs (3) and a supporting seat, wherein two vibration motors are symmetrically arranged on both sides of the frame, the frame is arranged on the springs, the sifting bed is fixedly arranged inside the frame, the springs are arranged on the supporting seat, and the sifting bed is lower than the top portion of the frame. The number of the springs is eight, and every two springs form a group, two groups of springs are arranged on one side of the frame, and two groups of springs are also arranged on the other side of the frame. The screen of the sifting bed is formed by structural steel, the structural steel vertically and horizontally overlapped and jointed with each other to form a plurality of gridding, the screen structural steel and the horizontal structural steel are divided into an upper layer and a lower layer, the lower layer is provided with flat steel in vertical mode, and the upper layer is formed by placing round steel horizontally on the flat steel. The open-type self-synchronizing linear vibrating screen uses periodic varied excitation force generated by the vibration motors to force a screen body to vibrate continuously, and enables materials to generate a certain movement and achieves screening. The screening effect of the open-type self-synchronizing linear vibrating screen is good, and production rate is high.

Description

The open type self-synchronizing linear vibration sieve

Technical field

The utility model relates to a kind of sieving machine, relates in particular to a kind of linear vibrating screen.

Background technology

Gravity flow screen generally be used for lump material coarse crushing or broken before prescreening, simple in structure and easily manufactured obtaining used comparatively widely because of it.Generally directly material is unloaded to its fixed compass screen surface by loading machine or handcart etc., slide (when compass screen surface is tilting) effect and realize material screening along compass screen surface by material gravity or by material.Existing gravity flow screen exists the phenomenons such as serious material arch camber and sieve aperture are blocked, and its screening effect is poor, often relies on when manually constantly beaing or disclosing with crooked chisel just to make moderate progress, and labor intensity of operating staff is high, and production efficiency is low.

Use to some extent and as the linear vibrating screen of approved product in some industries at present, be the full-closed structure form, double oscillating electromotor drives, symmetrical and relative compass screen surface has an inclination angle to arrange, under the force action of gravity, from the even material of input of sieve nest one endfeed mouth, tossed on the built-in screen cloth of sieve nest through batcher at exciting force and material, and great-jump-forward moving linearly forward, its oversize, screenings are discharged from the separately outlet of the sieve nest other end respectively.

Summary of the invention

The purpose of this utility model is to provide a kind of open type self-synchronizing linear vibration sieve, the exciting force that this vibratory sieve utilizes the vibrating motor generation cycle to change forces the sieve nest sustained vibration, make material generation certain movement and realize screening, its screening effect is good, and production efficiency is high.

For realizing above-mentioned utility model purpose, the utility model has adopted following technical scheme:

A kind of open type self-synchronizing linear vibration sieve, involving vibrations motor, framework, sifting bed, spring and supporting base, described framework bilateral symmetry is installed two vibrating motors, and frame installation fixedly mounts sifting bed in the framework on spring, and spring fitting is on supporting base; Described sifting bed is lower than frame roof.

Described spring is eight, and two one group, framework one side is installed two groups of springs, and corresponding framework opposite side is also installed two groups of springs with it.

The screen cloth of described sifting bed forms numerous grids by shaped steel by overlapping in length and breadth.

The vertical shaped steel of described screen cloth and laterally shaped steel divide two layers up and down, lower floor vertically arranges with band steel, the upper strata laterally is laid on the band steel with round steel.

The exciting force that the utility model utilizes the vibrating motor generation cycle to change forces the sieve nest sustained vibration, make material generation certain movement and realize screening, the utlity model has that simple structure, the vibration shape are stable, adaptation condition, reliable, easy to maintenance, and screening effect is good, the production efficiency high, can effectively eliminate and use the phenomenons such as material arch camber that gravity flow screen produces and sieve aperture are blocked.

Description of drawings

Fig. 1 is the utility model open type self-synchronizing linear vibration sieve structural representation;

Fig. 2 is top view of the present utility model;

Fig. 3 is side view of the present utility model.

Among the figure: 1 vibrating motor, 2 frameworks, 3 springs, 4 supporting bases, 5 sifting beds.

The specific embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Referring to Fig. 1 to Fig. 3, a kind of open type self-synchronizing linear vibration sieve, involving vibrations motor 1, framework 2, sifting bed 5, spring 3 and supporting base 4, described framework 2 bilateral symmetry are installed two vibrating motors 1, framework 2 is installed on the spring 3, framework 2 is interior through the fixing sifting bed 5 of bolt-connection, and spring 3 is installed on the supporting base 4; Described spring 3 is eight, and spring 3 is helical spring, and two one group, framework 2 one sides are installed two groups of springs, and corresponding framework 2 opposite sides are also installed two groups of springs with it.Described sifting bed 5 is lower than framework 2 tops, and keeping certain height with frame upper surface in the sifting bed surface, overflows towards four limits when preventing loading machine or handcart toward the sifting bed loading and unloading material.

The screen cloth of described sifting bed 5 forms numerous grids by shaped steel by overlap joint in length and breadth, the vertical shaped steel of screen cloth and laterally shaped steel divide two layers up and down, lower floor vertically arranges with band steel, the upper strata laterally is laid on the band steel with round steel, with the enhancing rigidity.

The operation principle of the utility model open type self-synchronizing linear vibration sieve is:

After two vibrating motors 1 start, enter rapidly constant speed synchronous backward turn state, the inertia force that its eccentric block produces cancels each other out at the sieve nest cross-sectional direction that is comprised of framework 2 and sifting bed 5, synthesizes exciting force in the vertical section direction.Because this exciting force is periodically variable by sinusoidal rule, force the sieve nest that participates in vibration also to do periodically to move both vertically, treat that the vertical component of vibration acceleration is greater than acceleration of gravity, by loading machine or handcart etc. directly unload to the sifting bed material just with rectilinear motion mode up and down continuously tossed, fall, piece material (wherein a part is broken under the jump state) sieves in a steady stream, fall into the hopper of sieve nest below, enter subsequent processing; Bulk materials then floats on sieve lattice surface, and by the crusher in crushing of putting into side after manually detecting, directly slide enters hopper, thereby finishes the material screening operation.

By Analysis of Vibration Characteristic, frequency ratio Z〉1.1, namely be in super resonance state and suit vibratory sieve operation conditions of the present utility model most.Under this state, vibratory sieve of the present utility model will obtain stabilized amplitude, pass to the basis load also a little less than.

Simultaneously; suddenly increase for fear of shutting down the amplitude that causes by resonance zone because of vibratory sieve; can adopt comparatively reliably motor reversing braking method, that is: during shutdown, vibrating motor outage and through certain time-delay; when rotating speed comes resonance speed; the changing-over of power supply two-phase because the motor stator magnetic direction changes, forces the unexpected reduction of speed of motor to zero; force sieve nest to cross fast resonance zone, make resonance transient.

It below only is preferred embodiment of the present utility model; be not be used to limiting protection domain of the present utility model; therefore, all any modifications of within spirit of the present utility model and principle, doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. open type self-synchronizing linear vibration sieve, involving vibrations motor (1), framework (2), sifting bed (5), spring (3) and supporting base (4), it is characterized in that: described framework (2) bilateral symmetry is installed two vibrating motors (1), framework (2) is installed on the spring (3), fixed installation sifting bed (5) in the framework (2), spring (3) is installed on the supporting base (4); Described sifting bed (5) is lower than framework (2) top.

2. open type self-synchronizing linear vibration sieve according to claim 1, it is characterized in that: described spring (3) is eight, two one group, framework (2) one sides are installed two groups of springs (3), and corresponding framework (2) opposite side is also installed two groups of springs (3) with it.

3. open type self-synchronizing linear vibration sieve according to claim 1 is characterized in that: the screen cloth of described sifting bed (5) forms numerous grids by shaped steel by overlap joint in length and breadth.

4. open type self-synchronizing linear vibration sieve according to claim 3 is characterized in that: the vertical shaped steel of described screen cloth and laterally shaped steel divide two layers up and down, lower floor vertically arranges with band steel, the upper strata laterally is laid on the band steel with round steel.