CN2170161Y

CN2170161Y - Superposition type oscillating screen

Info

Publication number: CN2170161Y
Application number: CN 93209606
Authority: CN
Inventors: 祝锡中; 沈继玄; 李怀儒
Original assignee: QIQIHAER GRAIN AND OIL MACHINERY PLANT
Current assignee: QIQIHAER GRAIN AND OIL MACHINERY PLANT
Priority date: 1993-04-09
Filing date: 1993-04-09
Publication date: 1994-06-29
Anticipated expiration: 2003-04-09

Abstract

The utility model relates to a superposition type oscillating screen, which can be used for cleaning and grading of grains and other similar materials. Two independent screening circuit branches are superpositioned in a screen box, and the independent screening circuit branches can realize combination patterns in parallel and series through different feed boxes and discharge boxes. The superposition type oscillating screen has the advantages of sufficient space utilization, little occupation area, and one machine with dual-purpose; the device occupation can be reduced. The superposition type oscillating screen can be used for the existing self balanced screen, a plane rotary screen, and a plane rotary oscillating screen.

Description

Superposition type oscillating screen

The utility model relates to a kind of screening installation (comprise from weigh vibratory sieve, rotary flat sieve, plane rotation vibratory sieve three kinds), is specially adapted to the removal of impurities and the classification of cereal or other similar material.

In order to separate the impurity in the cereal, people work out various screening separation equipments, and vibratory sieve is exactly wherein a kind of.Its exciting mode has multiple, at present comparatively advanced main nationality vibrating motor or common electric machine drive the exciting force that the eccentric wheel on the screen box produces, and drive screen box and do straight reciprocating motion or planar circumferential motion or front end and make the compound motion that linear reciprocation is made in oval rear end, plane.After material entered screen box by material feeding box, because the motion of sieve nest, material was made compound motion by deadweight and exciting force on compass screen surface, and glides along the sieve plate inclined-plane.In motion process, on compass screen surface, particle size drains to lower floor's compass screen surface less than sieve aperture to particle greater than the material lagging of compass screen surface sieve aperture, and the material after the separation is flowed out by the difference outlet, reaches the purpose of feed separation, classification.At present, external introduction and the domestic vibratory sieve of digesting and assimilating or developing voluntarily all have only a sieve road branch, and each sieve road branch is made up of the two layer screen lattice usually, and the upper strata is for sieving lattice except that big impurity, and lower floor is for removing small impurities sieve lattice.These occupation area of equipment are bigger, and especially complicated at impurity removal process, under the situation about need repeatedly screen, equipment amount that takies and floor space are all bigger.

The purpose of this utility model is to provide a kind of stacked-up type vibratory sieve that makes full use of space, minimizing floor space, reduces the equipment consumption.Behind this sieve as the efficient screen cloth of employing, decapacitation improves outside the sifting efficiency, and the unit width treating capacity of vibratory sieve more can further improve, and its physical dimension still can further be dwindled.

Key of the present utility model is: establish two stacked up and down independent sieve road branches in a screen box.Under the situation that each sieve road branch is made up of the two layer screen lattice usually, form two its combining forms of independent sieve road by four floor sieve lattice in this sieve screen box and divide two kinds: a kind of is two sieve road branches (singly advancing singly) side by side; Another kind of is tandem (going with each other all the time).Particularly, the former can be used as screen with a kind of material, and the material single channel enters, and after the screening of branch two-way, merges into single channel discharging (as Fig. 1,3,5,7) at discharge end; The latter can sieve two kinds of different materials, and material divides and mouthful to enter, and two-way screens respectively, and finished product is discharged (as Fig. 2,4,6,8) respectively at discharge end, the sieve road side by side or tandem be to realize by different material feeding box and feed box.

Because no matter this vibratory sieve singly goes out for stacked compound sieve road up and down or twoly goes out, all need in its discharge end facade two kinds of materials are up and down converted to discharging in same plane, also all need widen the materials flow width in the exit, the attenuate thickness of feed layer is beneficial to vertical air channel or self-loopa air draught separator carries out the light impurity separation, under situation about going with each other all the time, also the storeroom on two stacked up and down sieve roads need be separated, send into compound vertical air draught road respectively or compound self-loopa air draught separator is handled, these are all realized by feed box.

Structure of the present utility model is not only applicable to comprise being applied to rotary flat sieve and plane Gyratory screen from weighing vibratory sieve yet.

Vibratory sieve of the present utility model (containing rotary flat sieve, plane rotation vibratory sieve) is compared with present equipment of the same type, have that the complete machine width is little, floor space is few (referring to singly advance singly), dual-use, minimizing equipment occupancy volume, reduction investment (referring to go with each other all the time) therefore have good economic benefit and social benefit.

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

Fig. 1 is the sieve road schematic diagram of a kind of sieve arranged side by side road of the present utility model (singly advancing singly) four floor sieve lattice stacked-up type from the vibratory sieve that weighs.

Fig. 2 is the overall structure cutaway view of vibratory sieve shown in Figure 1.

Fig. 3 is the sieve road schematic diagram of a kind of tandem sieve road (going with each other all the time) four floor sieve lattice stacked-up type from the vibratory sieve that weighs.

Fig. 4 is the overall structure cutaway view of vibratory sieve shown in Figure 3.

As Fig. 2 for a kind ofly singly advance singly, two side by side sieves road stacked-up types that four floor sieve lattice are formed are from weighing vibratory sieve.Screen box (14) is being supported by four elastic caoutchouc dampers (13) that are installed on the frame (15), and the exciting force that is installed in two vibrating motors (16) of screen box (14) both sides by symmetry drives screen box (14) and makes the compound motion that front and back back and forth are the master.Screen box (14) is provided with four layers of sieve lattice, and one, two floor sieve lattice (5,4) and three, four floor sieve lattice (3,2) are formed two stacked up and down sieve roads respectively.Several ball (7) are housed to remove material and the impurity that stops up sieve aperture in every layer of sieve lattice.Every layer of sieve lattice all have hold down gag (17), in case screen box when motion sieve lattice play.Screen box (14) top is provided with observation window (6), in order to operation.

Material enters material feeding box (8) by feed pipe (9) single current, evenly spread out at whole width earlier by the refining plate, comb shape flow dividing structure in case again, material is divided into two-way, flow into respectively on two compass screen surfaces that remove big assorted sieve lattice (5) and (3) in the sieve road, big impurity greater than sieve aperture is trapped on the compass screen surface, along with screen box (14) motion is flowed to feed box (1) direction, passing compass screen surface less than the material of sieve aperture enters respectively on the compass screen surface except that the sieve lattice (4) of small impurities and (2), equally, on the lower screen lattice, pass compass screen surface less than the small impurities of sieve aperture and fall on the base plate that sieves the road separately, material merges after the discharging opening of widening (10) enters discharges after the vertical air draught of single entry road (or single entry self-loopa) air draught separator (18) is removed light impurity at feed box (1) after the screening between each sieve road two layer screen lattice.Concentrate on the right side pipeline on the ramp of big trash flow on sieve lattice (5, the 3) compass screen surface to the feed box (1), two-way converges through big assorted outlet (11) discharges; Small impurities on the base plate of top sieve road enters feed box and converges to small impurities discharging opening (12) discharge after the ramp that tilts flows into the aggregate pipe of feed box (1) both sides with the small impurities that sieves the road down.

Fig. 4 for a kind ofly go with each other all the time, the two sieve of tandem road stacked-up types that four floor sieve lattice are formed are from weighing vibratory sieve.It is similar to the situation that Fig. 9 list advances singly to go out the stacked-up type vibratory sieve that sieve lattice in the overall structure of vibratory sieve and the screen box (14) are provided with situation, only material feeding box (8), feed box (1) and air draught separator (18) are because sieve road combining form difference, difference to some extent on the flow process, the spy is described below:

Two kinds of different materials (comprising through the different material of cleaning degree) enter material feeding box (8) by two feed pipes (9), spread out by the refining plate full duration in the case respectively, divide two-way to flow on the compass screen surface that removes big impurity sieve lattice (5) and (3), the motion of nationality screen box (14), along inclined direction flow towards feed box (1) direction, big impurity greater than sieve aperture is trapped on the compass screen surface, passing compass screen surface less than the material of sieve aperture enters respectively on the compass screen surface except that small impurities sieve lattice (4) and (2), equally, passing compass screen surface less than the small impurities of sieve aperture falls on the base plate that sieves the road separately, material is in feed box (1) after the screening between each sieve road two layer screen lattice, there is plate at interval, flows out to respectively via stacked up and down in the vertical plane that the alternate discharging opening separately (10) through widening in the left and right sides enters compound vertical air draught road (or compound self-loopa) air draught separator (18) in the horizontal plane.After removing light impurity, enter down the step process flow process respectively, the vertical channel that concentrates on the direction of advance right side on the inclined ramp of big trash flow to feed box (1) on sieve lattice (5) and (3) compass screen surface converges (or dividing mouth) outside big impurity discharging opening (11) discharge machine.Small impurities on the base plate of top sieve road enters feed box (1) after the ramp that tilts flows into the aggregate pipe of feed box (1) both sides, or discharges separately, or converges outside small impurities discharging opening (12) discharge machine with the small impurities that sieves on the base plate of road down.(6) are observation window among Fig. 4, and (7) are ball, and (13) are the elastic caoutchouc damper, and (15) are frame, and (16) are vibrating motor, and (17) are hold down gag.

Claims

1, a kind of stacked-up type vibratory sieve that is used for cereal or other similar material removal of impurities and classification, comprise the screen box (14), material feeding box (8), feed box (1), shock absorber (13), vibrating motor (16) and the frame (15) that are provided with the multi-deck screen lattice, it is characterized in that establishing in a screen box (14) two the stacked up and down independent sieve road branches that are made up of four floor sieve lattice (5,4,3,2), the arranged side by side or tandem on road is sieved by two branches by different material feeding box (8) and feed box (1) realization.