CN2172682Y - Low rotating speed swivel screen - Google Patents

Abstract

The utility model discloses a low rotating speed swivel screen, belonging to the equipment field of screening solid materials with filtering screens. The utility model is characterized in that the low rotating speed swivel screen is composed of a motor, a main shaft, a main pivot shaft, a vibration body, a vibration excitation plate, an eccentric adjustment device, a bottom frame, a screen mesh, a counter weight, elastic swivel blocking float support rods, etc. The whole screening system is supported by 8 elastic swivel blocking float support rods through the bottom frame. By utilizing the excitation of an eccentric excitation plate, and the swivel blocking of the elastic swivel blocking float support rod toward the whole screening system, the screen body can be swiveled and swung. In this way, the materials can not jump on the screen mesh, but swivel along an elliptical trace on the mesh surface without leaving the mesh surface, which can improve the screening effect.

Description

Low rotating speed swivel screen

The utility model belongs to the device field with screen screening solid material.Mainly be applicable to the screening of industry solid materials such as chemical industry, metallurgy, abrasive material, food, medicine, pottery, machinery and pasty material.

In industries such as chemical industry, metallurgy, food, existing use is the screen of oscillatory type, i.e. vibratory sieve by the device of particle size separation material.Though this class sieve can satisfy instructions for use to a certain extent, but still has weak point:

1. the screen(ing) machine rotating speed and the frequency that shakes are too high, and rotating speed causes material to be beated on screen cloth greatly all at 1440-2800 rev/min, and the frequency height of beating reduced time and the chance of crossing net that material net, thereby screening efficiency is low, and especially the light material screening efficiency is poorer.

2. because speed is too high, shorten mechanical life, and to the screening of some hard materials and abrasive material, the screen cloth serious wear is changed the cycle of screen cloth and lacked especially, and the off-time increases, and has both improved production cost, influences production efficiency again.

3. noise is big, and it is higher to consume energy.

The purpose of this utility model is to provide a kind of the former various symptims and signs of deficiency part that overcomes, and sieves and select the efficient height, and noise reduces, and the life-span is long, the low speed whirl screen that energy consumption is low.Based on above-mentioned purpose, the utility model adopts the sieve nest main shaft to slowly run for 180-280 rev/min on know-why, and sieve nest hindered revolves, and utilizes eccentricity excitation to produce exciting force simultaneously, under the exciting force effect, makes the sieve nest swing of circling round.Material is not beated on screen cloth like this, circles round but be elliptical orbit on wire side, and stirs, and material has so just improved the screening effect of material greatly not from wire side.

The size of sieve nest exciting force can be adjusted the eccentric throw of exciting plate and the angle of cut of exciting plate and shimmy body and realize according to the requirement of screening different material and screening precision.

Structurally the utility model is made up of drive motors, main shaft, shimmy body, exciting plate, main pivot, underframe, screen frame, screen cloth, clear net arrangement, feed inlet and outlet etc., can be according to the sorting requirement, one machine can be adorned 1-3 layer screen frame, once finishes the sorting of 1-3 kind granularity.

Compared with prior art the utility model has following advantage:

1. because speed of gyration is low, so energy consumption is low, less than about 25% of existing vibratory sieve.

Mechanical life long, particularly the life-span of screen cloth is improved 8-10 doubly than existing vibratory sieve.

Material on the net the holdup time long, running orbit is ellipse (adjustable), rolls on wire side and circles round, so the screening efficiency height.

4. noise is lower than existing vibratory sieve 2-3 decibel.Good seal performance, free from environmental pollution.

5. widely applicable, all can sieve the material of rigid and abrasive material etc. and pasty state.

Now the utility model is described in further detail in conjunction with the accompanying drawings.

Accompanying drawing is the structural representation of the utility model low speed whirl screen.

Among the figure, 1 is support, and 2 are supporting, and 3 is the main shaft housing, and 4 is main shaft, 5 are the pendulum plate body, and 6 is counterweight, and 7 for locking bolt, and 8 is adjusting angle mechanism, and 9 is the exciting plate, 10 is off-center adjustment apparatus, and 11 is main pivot, and 12 is underframe, and 13 is deceleration device, 14 is clear net arrangement, and 15 is online thing discharging opening, and 16 is screen frame, and 17 is screen cloth, 18 is locking belt, and 19 is loam cake, and 20 is feeding mouth, and 21 is thing discharging opening off the net, 22 is motor, and 23 is belt wheel, and 24 revolve for elasticity resistance and floatingly to hold bar, and 25 is main pivot shell.

Main shaft housing 3 is connected in support 1 by supporting 2.Motor 22 drives shimmy body 5 by belt wheel 23, drive shaft 4 and produces shimmy power source.On the shimmy body 5 and counterweight 6 is housed, be used to adjust balance and stability.Exciting plate 9 directly is connected the size of the required dynamics of circling round and the size of amplitude by clamping screw 7 and shimmy body 5; Can regulate eccentric throw by off-center adjustment apparatus 10 realizes.Eccentric throw is big more, and the amplitude of circling round that informs exciting plate 9 is just big more.Material movement velocity off the net on the net can be adjusted in the scope of 0-4 by adjusting angle mechanism 8, can determine according to the needs of different material and screening.Angle is big more, and material movement speed and discharging speed are just fast more.Main pivot 11 is fixed in exciting plate 9, and the shell 25 and the underframe 12 of main pivot 11 combine as a whole.So the action of circling round of underframe 12 is passed to by exciting plate 9, underframe 12 tops connect screen frame 16 and loam cake 19 by locking belt 18.Underframe (12) revolves with 8 elasticity groups again and floating hold bar (24) and be connected.Screen cloth 17 is fixed 16 bottom, forms screening system.Total screening system revolved by 8 elasticity resistances and floatingly holds bar 24 and be bearing on the support 1.The resistance of 8 elasticity is revolved the floating pole pair screening system that holds and is hindered and revolve, and screening system can increase as required adorns one to three-layer network frame (16) and screen cloth (17).Main shaft (4) and main pivot (11) be not on same axis.

Material enters screen frame 16 from charging aperture 20 and sieves, and online material is discharged from discharging opening 21 automatically.

Deceleration device 13 is connected with main shaft 11 with clear net arrangement 14, drives clear net arrangement 14 rotations by slowing down, and constantly clears up mesh, makes screening work normally and efficiently.

Claims (4)

1, a kind of slow-speed of revolution whirl screen structurally comprises motor, belt wheel, main shaft, screen frame, screen cloth, loam cake, charging aperture, online thing and thing discharging opening off the net, it is characterized in that:

This slow-speed of revolution whirl screen also contains shimmy body (5), counterweight (6), clamping screw (7), adjusting angle mechanism (8), exciting plate (9), off-center adjustment apparatus (10), main pivot (11), underframe (12), deceleration device (13), clear net arrangement (14) and elasticity resistance and revolves the floating bar (24) that holds;

Wherein, shimmy body (5) links to each other with main shaft (4); Counterweight (6) is assemblied in an end of shimmy body (5); Exciting plate (9) is assemblied on the shimmy body (5) by lock screw (7); Main pivot (11) is fixed on the exciting plate (9), and the housing (25) of main pivot (11) combines as a whole with underframe (12); Underframe (12) top links screen frame (16) and loam cake (19) by locking belt (18); Underframe (12) revolves with the resistance of eight elasticity again and floatingly holds bar (24) and be connected;

Whole screening system is revolved by the resistance of eight elasticity and floatingly holds bar (24) and be bearing on the support (1).

2, whirl screen according to claim 1 is characterized in that screening system can increase dress 1-3 layer screen frame (16) and screen cloth (17).

3, whirl screen according to claim 1 is characterized in that deceleration device (13) is connected with main pivot (11) with clear net arrangement (14).

4, whirl screen according to claim 1 is characterized in that main shaft (4) and main pivot (11) be not on same axis.