CN1100673A

CN1100673A - Vibration screen

Info

Publication number: CN1100673A
Application number: CN 94106451
Authority: CN
Inventors: 平本利德
Original assignee: Shinko Electric Co Ltd
Current assignee: Shinko Electric Co Ltd
Priority date: 1993-06-21
Filing date: 1994-06-15
Publication date: 1995-03-29
Anticipated expiration: 2014-06-15
Also published as: JPH0725975U; CN1045906C; JP2597717Y2

Abstract

The invention provides a vibration sieving machine. A frame 71 and a sieving frame 72 arranged inside of the frame body are combined by a drive spring assembly 102. Due to the rotation of unbalanced weights 86a and 86b, the sieving frame 72 vibrates linearly. Materials to be sieved on the strip shaped parts 92 and 93 fixed on the sieving frame 72 are conveyed through the clearance h of the parts, ashes material as the sieved material are discharged out from a discharge hole 88, and unburnable various scrap iron and scrap metal are discharged out from a discharge hole on the sieve. Impacting bodies 94 and 98 are used for impacting the sieving frame periodically, so that the ash material cannot become dumpling shape and is sieved off certainly, scrap iron and scrap metal cannot be clamped in the clearance h, and the sieving surface cannot be damaged.

Description

Vibration screen

The present invention relates to vibrating scalper, particularly relate to and be most appropriate to sieve those are mainly ash content and contain the material (so-called composite) of 15-20% moisture or have moisture and hygroscopic material after burning vibrating scalper.

Recently, various rubbish are being burnt the ash that the back generates, often spray with water so that contain the moisture of 15-20%, become sticking slimy appearance, in addition, the rubbish that burnt is owing to also contain thing such as metal fillings, therefore will burn metal fragment and the ash separation that the back residue will wherein can not burn with the vibrating scalper shown in Fig. 6 to 12 and come this.Fig. 6 and Fig. 7 illustrate the integral body 1 of this screen(ing) machine, about before and after framework T is arranged on the base station with antirattle spring 5 on the paired

pillar

3,4, and decide the angle inclination by institute as shown in Figure 6.Centre in a side of base station 2, there is motor 7 to be fixed on the erecting bed on the base station 2 as shown in Figure 7, couples together at belt pulley of fixing on the rotating shaft 8a of this motor 78 and belt pulley 10 usefulness belts 9 coilings of on an end of framework T side direction rotating shaft 11, fixing.In addition, on the two ends of rotating shaft 11, as shown in Figure 7, fixing and slightly becoming semicircular

unbalanced weight

12a, 12b.

Framework T, as shown in Figure 9, form by two sidewall 71a, 71b and the base plate 71c that they combine, the compass screen surface S that the back will be spoken of just is installed between these two sidewall 71a, 71b, its sieve that is divided into is up and down gone up space 17 under space 16 and the sieve, sieve down material by base plate 71 and sieve down outlet 15 discharge, in addition because the vibration of compass screen surface S and inclination and discharged from sieving outlet 14 by material on the sieve of transferring.

On two sidewall 71a, the 71b of framework T, four driving spring assemblies are installed respectively by the interval that equates, these assemblies as shown in Figure 9, by be fixed on sidewall 71a, 71b outside, section is the

parts

19,20 of L word shape, be fixed on these

parts

19,20 inner face, bulk or

tabular rubber spring

22a, 22b separately, and be clamped between these rubber springs 22a, the 22b, banded web 21 forms.Web 21 is as shown in Figure 6 along sidewall 71a, the longitudinally of 71b extends, on these plates 21, form the cylindrical portion 29 of minor diameter as shown in figure 10 with the interval that equates, assembly the two ends of axle 28 in these cylindrical portion 29, at sidewall 71a, the last hole 25as that inserts logical this 28 usefulness that forms of 71b, 25b, in order to prevent to sieve or sieve material down from hole 25a that these are aimed in the two side, 25b outwards flies out and the circle that is provided with

prevents plate

26a, 26b only leaves very little gap with two sidewalls, and is preventing plate 26a, connecting piece 27 also is set between the 26b to be combined them.

As shown in Figure 9, on the counterpart of driving spring 18, connecting piece 23 is installed on two sidewall 71a, the 71b with installing plate 24a, the 24b at its two ends, between these two connecting

pieces

23,27, as shown in figure 11, the screen cloth of being made by rubber, form

many aperture

30a, 31a on it 30,31 alternately is installed.In addition, as shown in Figure 7, form a plurality of little framework F and compass screen surface S above-mentioned connecting

piece

23,27 is fenced up.

More than talked the formation of this existing screen(ing) machine, next the effect with regard to it describes.In addition, resonant frequency by the spring constant of

rubber spring

22a, 22b in driving spring assembly 18, and be clamped in connecting piece 27 that the binding parts 21 between these rubber springs 22a, the 22b become one, be installed in the decisions such as

screen cloth

30,31 on the connecting piece 27, motor 7 makes the rotating speed rotation of rotating shaft 11 with approximate said frequencies by the transmission revolving force of belt 9 when rotated, thereby, owing to the unbalanced weight 12a, the 12b that are fixed on rotating shaft 11 two ends produce the circular power of shaking that adds, this power directly is sent on the framework T of supporting shaft 11.In driving spring assembly 18, because

plate rubber

22a, 22b are minimum at the spring constant that it is cut off on the direction as everyone knows, so under the effect that adds the power of shaking of

unbalanced weight

12a, 12b, at the bigger vibration component of generation on the direction of cutting off of this

plate rubber

22a, 22b, make connecting piece 27 vibrations by web 21.

In addition, framework T is bearing on the

pillar

3,4 with antirattle spring 5, and on the other hand,

plate rubber

22a, 22b in driving spring assembly 18 cuts off at it has bigger vibration component on direction, therefore do as a wholely, what web 21 carried out on extending direction is the elliptical vibration with major axis.In addition, the vibration of the vibration of framework T and connecting piece 27 differs 180 degree on phase place.

Therefore, shown in Figure 11 A, when connecting piece 27 right-hand mobile in figure, contiguous connecting piece 23 moves to left.Thereby in the

screen cloth

30,31 that the both sides of connecting piece 23 are made by rubber, 31 bend as shown in the figure, and 30 become tensioning state.Shown in Figure 11 B, because the move left and right of connecting piece 23, just the tensioning and the bending of the screen cloth of being made by

rubber

30,31 alternately repeat.Figure 11 B is depicted as such tensioning and crooked centre position, and in Figure 11 A, screen cloth 31 is in case of bending, another screen cloth 30 becomes tensioning state, because

screen cloth

30,31 alternately repeat, at compass screen surface 30, conduct waits that the ashes that sieve material just can sieve on 31, but also contain aphlogistic rubbish owing to not only contain ash content f in the ashes, nail P for example, metal fillings Q and other m etc., as the going up outlet 14 by sieve and discharge of oversize, then discharge by the following outlet 15 of sieve by sieving down space 17 in these rubbish as screenings but account for wherein most ash content f.

Yet, in aphlogistic rubbish, contain for example nail P and things such as metal fillings m with sharp edge, its most advanced and sophisticated can bundle on mesh 30a, the 31a of the

screen cloth

30,31 that rubber is made, mesh not only can take place to be stopped up, and, split to cause this

screen cloth

30,31 because the tensioning bending of above-mentioned

compass screen surface

30,31 is shaken.In addition, because ashes contain 15 and even 20% moisture, have the granulation tendency, outlet 14 discharges by sieving upward as oversize to make the ash content f that can be used as screenings originally become the dumpling shape shown in the n.

In addition, as above first kind of existing screen(ing) machine of Gou Chenging has a kind of like this effect, when the compass screen surface S of screen(ing) machine is when being made by rubber like this, because the above-mentioned acceleration maximum that repeats to be produced lax like that and tensioning can reach 50G, though therefore be widely used in containing above-mentioned such juicy ashes, have above-mentioned shortcoming.

Figure 12 and Figure 13 shows that another kind of existing vibrating scalper, its integral body is represented with label 40, roughly become the top opening of the framework 41 of rectangle to be covered by lid 60, in Figure 12 as seen, left end is provided with the supply port 42 of ashes, right-hand member is provided with sieve and goes up outlet 43, then is provided with outlet under the sieve at the right-hand member of diapire.

Framework 41

usefulness antirattle springs

45,46 are bearing on the

pillar

47,48 on the base station 49.On base station 49, fixing motor 50, belt pulley 51 and the crank belt pulley 53 usefulness belts 52 fixed in its rotating shaft are being reeled, the revolving force of motor 50 is sent on the crank belt pulley 53, on this crank axle 54, fixing crank connecting link 55, in the both sides of this small

end plate rubber

56a, 56b are installed, its another side is fixed on the installing plate 59 with

iron plate

57,58, and 59 of this installing plates are fixed on the casing 41.

As shown in figure 13, setting up it in casing 41 has enough perforated metals 61 of big opening 61a, is setting up the net 62 that is made into above it.Be divided into a plurality of punching out ball reception rooms 64 on perforated metal 61, each reception room can be accommodated two, three punching out balls.Rubber 67 is being fixed in upper end in the next door 66 of dividing punching out ball receiving space 64 usefulness, because the vibration of framework 41 causes knitmesh 62 to be vibrated between this rubber 67 and knitmesh 62, forms the gap that is subjected to large impact power and does not reach damaged degree in knitmesh 62.

The formation of the 2nd kind of existing screen(ing) machine now illustrates its effect as mentioned above.When drive motor 60, making rotatablely moves is transformed to rectilinear motion, and

plate rubber

56a, 56b be absorbing vibration when starting, makes casing 41 stably be in certain vibrational state.That is to say, on the extending direction of crank connecting link plate 51, can not carry out the vibration as a, when ashes drop into from supply port in the casing 41 and when knitmesh 62 is transferred, ash content f falls downwards as screenings, further, by perforated metal 61, discharged by outlet 44 by handover owing to the vibration of material space 65 under the sieve.In addition, ashes f is because contain the moisture of volume, adhere to easily on the net 62 that is made into, but because the jumping of punching out ball 68, knitmesh is impacted for more than 62 time, the ashes that begin to stop up are landed downwards, become screenings, transferred owing to the vibration in space under the sieve by hole 61a enough big on the perforated metal 61.

Yet, because contain the moisture of volume in the ashes, so forming lumps shown in g1, the g2 or accumulation on the perforation web plate 61 or on the base plate of casing 41, though may be transferred from sieving down 46 discharges of material outlet owing to the vibration in space under the sieve, the agglomerate ashes g2 on the perforation web plate 61 can hinder the jumping of punching out ball 68.Particularly position next door 66 and agglomerate burnt punching out ball 68 between the ashes g2 ' no longer can jump, and makes and can also no longer can finish the way under the grey sub-sieve that contains volume moisture on it with strike knitmesh 62 originally.

The present invention is because the problems referred to above, purpose is that a kind of vibrating scalper will be provided, this function will contain the ashes of volume moisture, and the material (being composite) that contains aphlogistic rubbish such as iron and metal fillings, be separated into material that can be used as screenings and the material that can be used as oversize indeed, and metal fillings can not produce damage to compass screen surface.

In order to reach following purpose, vibrating scalper of the present invention is made up of following parts: by the framework of antirattle spring supporting, make the machine that shakes that adds of this framework vibration, the screen frame that in above-mentioned framework, sets, be fixed on two sidewalls of above-mentioned framework with an end respectively and the other end is fixed on the driving spring on the above-mentioned screen frame, be fixed on the above-mentioned screen frame with two ends and leave the gap respectively and a plurality of strip-shaped parts of setting along the screening materials transfer direction, and in two end walls of above-mentioned framework, be provided with at least one will with the impact body under the fixed interval that above-mentioned screen frame is decided.

Now that the Action Specification of above-mentioned screen(ing) machine is as follows.When framework makes its vibration with the antirattle spring supporting and by the driving that adds the machine that shakes,, the screen frame that sets in the framework inboard is vibrated along the direction of the spring constant minimum of driving spring owing to the intervention of the driving spring of fixing at this framework one end.This moment, screening materials was transferred on the strip-shaped parts that is fixed on two sidewalls of screen frame, can subside downwards by the gap between these strip-shaped parts in the way, thereby oversize is separated with screenings.In addition, when generating material is blocked in the situation in gap between strip-shaped parts, because the relative vibration of framework and screen frame, the impact body that is fixed on the framework collides screen frame by some cycles, the material that is blocked in the gap is impacted, the material that can stay on the sieve is transferred on strip-shaped parts as oversize, and the material that becomes screenings is subside downwards by the gap.Strip-shaped parts can be made of metal, and in addition, the gap of strip-shaped parts can make the iron filings P and the f that talk about in the above-mentioned existing screen(ing) machine subside easily downwards, and can be injury-free as a plurality of strip-shaped parts of compass screen surface.Therefore sieving actoion can guarantee to be stablized for a long time.

Now accompanying drawing is simply described as follows:

Fig. 1 is the oblique view according to the vibrating scalper integral body of the embodiment of the invention;

Fig. 2 is the side view of the same screen(ing) machine cut open of part;

Fig. 3 is the plane of same screen(ing) machine;

Fig. 4 is the front elevation of the same screen(ing) machine cut open of part;

A is the amplification profile of wanting portion of same screen(ing) machine among Fig. 5, and B illustrates the same amplification profile of wanting portion's effect;

Fig. 6 is the side view that the part of first kind of existing vibrating scalper is cut open;

Fig. 7 is the plane of same screen(ing) machine;

Fig. 8 is the front elevation of cutting open of same screen(ing) machine;

Fig. 9 is the profile of [9]-[9], edge line direction among Fig. 7;

Figure 10 is the profile of [10]-[10], edge line direction among Fig. 7;

A is the Zoom Side profile of wanting portion of existing screen(ing) machine among Figure 11, and B illustrates the same sectional side view of wanting portion's effect;

Figure 12 is the side view of the 2nd kind of existing vibrating scalper;

Figure 13 is the sectional side view of the 2nd kind of existing vibrating scalper.

Below with reference to the vibrating scalper of Fig. 1 to Fig. 5 explanation according to the embodiment of the invention.The integral body of this vibrating scalper is represented with label 70 in Fig. 2, framework 71 usefulness respectively have a pair of

antirattle spring

76,77 all around and are bearing on the

support unit

74,75 on the base station 73 with spring base 78,79, in the aftermentioned mode screen frame 72 are installed in the inboard of framework 71 in addition.

Four driving spring assemblies 102 the same with prior art are installed on two sidewalls of framework 71, this assembly 102 as shown in Figure 4, by section is installing component 103a, the 103b of L word shape, the plate rubber 104a, the 104b that on its relative face, are fixing, and the binding parts 105 that clamping between this two plate rubber 104a, 104b are formed.As following mode, in framework 71, setting screen frame 72, the framework 71 by above-mentioned binding parts 105 and plate rubber 104a, 104b and the outside on two sidewalls of this screen frame 72 combines.

Upstream side in screen frame 72 is provided with 92 5 of the strip-shaped parts that two ends are fixed, section is dihedral steel constitute, their gaps on transfer direction are h, and downstream side be provided with highly lower, two ends are fixed, 93 6 of the strip-shaped parts that constitute with steel, its gap is h.Locate in order to guide screening materials in the approaching of the upper reaches of upstream side strip-shaped parts 92 side, be provided with section still for the guiding part 91 of dihedral, be fixed on two sidewalls of screen frame 92, right-hand member at screen frame 72 is provided with outlet 72a on the sieve, in addition, screen frame 72 forms handover road 88 under the sieve in the framework 71 with the outside below the lower ending opening 72c, as Fig. 2, is provided with outlet 88a under the sieve at its right-hand member.

Central authorities at framework 71 left end walls are installed with impact body 94, and this impact body 94 is made up of bolt 95 and nut 97, and the threaded portion 96 of bolt 95 is prevented rotation to be threaded in the screwed hole of end wall 92 with nut 97.Form clearance G between the end wall of the head of bolt 95 and screen frame 72.In addition, the right-hand member wall of screen frame 72 is gone up outlet 72a and is done lowlyer than left end wall in order to form sieve up, is provided with the impact body 98 same with above-mentioned impact body 94 in the central authorities of framework 71 right-hand member walls.That is to say, the bar portion 100 of bolt 99 is provided with the fixed gap G of institute to be threaded in the screwed hole of end wall with nut 101.

Because above such formation, so quality of framework 71, the spring constant of antirattle spring 76, the quality that screen frame 72 and strip-

shaped parts

92,93 mounted thereto etc. are formed, and the spring constant of two sidewall structures driving spring assembly 102 altogether of screen frame 72 and framework 71 constituted so-called two quality vibrational systems, the diameter of

belt pulley

82,84 and the rotating speed of motor must be set like this, the resonant frequency of the approximate above-mentioned vibrational system of frequency that produces when making unbalanced weight 86a, 86b rotation.

According to the formation of the vibrating scalper of the embodiment of the invention as above-mentioned, next its effect will be described.Produce the circular power of shaking that adds when unbalanced weight 86a, the 86b of motor 81 drivings rotate, this power is sent on the framework 71.On the other hand, because framework 71 usefulness antirattle springs can be supported quiveringly, and combine with screen frame 72 by driving spring assembly 102 and therefore roughly to be in resonance state in the inside, the same with prior art, plate rubber 104a, the 104b of driving spring assembly 102 vibrates having big cutting off on the direction of vibration component, plate rubber 104a, 104b carry out cutting off the elliptical vibration that direction has major axis, and screen frame 72 carries out the straight-line oscillation on the direction of cutting off at plate rubber 104a, 104b.Because this cause, main rubbish is transferred on strip-shaped parts 92 because of vibration in the ashes on the strip-

shaped parts

92,93 that forms compass screen surface, ash content f can be positively by the gap h between strip-shaped parts, and fall on the road to transferring down with the sieve of framework formation one, because of vibration is transferred to outlet 88a.On the other hand, as oversize, those contain aphlogistic rubbish of iron filings m and metal fillings n, shown in Fig. 5 A, B, are transferred on strip-

shaped parts

92,93, go up outlet 72a by sieve and discharge.

In addition, for the ash content that contains volume moisture has the granulation tendency, to becoming the dumpling shape, screen frame 72 is except carrying out on its bearing of trend the straight-line oscillation, all periodically impacted in its forward travel or in the laggard motion, thereby be subjected to bigger impulsive force, become containing of dumpling shape washy ash content and just be broken by

impact body

94,98, from the gap h of 92,93 of strip-shaped parts, subside downwards, become screenings really and discharge.In addition, the metal fillings Q shown in Fig. 5 A and iron filings m, P, when m was clamped by gap h, because the impact of

impact body

94,98 and screen frame 72, this class was bitten shown in Fig. 5 B and can immediately be removed, and becomes oversize and transfers on strip-shaped parts 92,93.In addition, because strip-shaped parts the 92, the 93rd, make,, strip-

shaped parts

92,93 is sustained damage so that no longer can carry out sieving actoion later on even part gap h is bitten like this by metal (steel).

More than be illustrated with regard to embodiments of the invention, certainly, the present invention is not limited by this embodiment, under the prerequisite based on technological thought of the present invention, may make many variations.

For example in above embodiment, adopt unbalanced weight 86a, 86b that motor rotates as adding the machine that shakes, scheme as an alternative, the crank driving machine shown in available above-mentioned the 2nd kind of existing screen(ing) machine is as adding the machine that shakes.Perhaps can adopt a vibrating motor, the bearing of trend of its rotating shaft and framework 71 meets at right angles, and this motor is fixed on the aft bulkhead of framework 71, and in addition, available a pair of vibrating motor is fixed on and makes their that straight-line oscillation power takes place on two sidewalls of framework 71.

In addition, in above embodiment, adopt a pair of plate rubber 104a, 104b in driving spring assembly 102, as an alternative, also available coil spring makes it axially consistent with the direction of vibration of screen frame and be fixed on two sidewalls of framework 71.

In addition, in above embodiment, the clearance G that forms between the head of the bolt of

impact body

94,98 and screen frame 72 is certain, also nut 97,101 can be unclamped, and regulates the interval between bolt head and the screen frame 72.

In addition, in above embodiment, the rear end face of subtend screen frame and front end face all respectively are equipped with

impact body

94,98 on framework 71, periodically impact, and a side impact body also can omit therein.

In addition, in above embodiment, control about motor 81 does not have any narration, but this motor 81 can control, by the vibrating detector of screen frame 72 or framework 71, the sensor of installing in its vicinity for example, so as to detecting the relative amplitude to framework 71 or screen frame 72 of framework 71 or screen frame 72, supply with control loop with this amplitude, with fixed amplitude ratio, make both often keep unanimity, control the rotating speed of motor 81 like this.Promptly when the off-resonance frequency, according to frequency one amplitude curve fixed amplitude adjust amplitude and make frequency near resonant frequency.Thus, can make the impulsive force of

impact body

94,98 and screen frame 72 be adjusted into institute's definite value, can also make fixed impulse period be adjusted into particular value.Perhaps make the screening efficiency of screening materials reach peak and adjust the rotating speed of motor 81 and promptly adjust amplitude, perhaps set and decide the amplitude device, make the amplitude that detects by vibrating detector, with the amplitude ratio of setting in the controller, make amplitude often keep certain.

In addition, in above embodiment, because the rotation of unbalanced weight 86a, 86b produces the round power of shaking that adds and makes screen frame 72 vibrations, the applicant formerly once developed a kind of automatics, it is a degree of unbalancedness of adjusting unbalanced weight with two heavy mutually unbalanced weights by the relative position adjustment between them, can be used under certain rotating speed, increasing or reducing adding the power of shaking, so as to regulating screening efficiency.

In addition, in above embodiment, whole device 70 is downward-sloping on transfer direction, scheme as an alternative, device 70 can be made level, tilt by deciding angle and the setting angle of 102 pairs of screen frames 72 of driving spring assembly is done paired horizontal direction, simultaneously unbalanced weight add the power of shaking with horizontal direction but have the direction of vibration that a certain angle is applied to the straight-line oscillation of the long axis direction of elliptical vibration of framework 71 and screen frame 72, make on and transfer as the strip-

shaped parts

92,93 of compass screen surface.China and foreign countries in this case, in the above-described embodiments, installation direction towards plate rubber 104a, the 104b of framework 71 also can be parallel, but turn over 90 degree, make on the direction vertical and vibrate with the framework bearing of trend, in this case, whole framework 71 must downward-slopingly set on transfer direction so that screening materials is transferred.

As mentioned above, be applicable to the ashes that contain volume moisture, composite and the rubbish that contains aphlogistic different shape metal fillings and iron filings according to vibrating scalper of the present invention, and no matter screening materials how, all but no problem ground carries out separating of oversize and screenings, and can guarantee that the sieving actoion of screen cloth is permanently effective.

Claims

1, a kind of vibrating scalper is characterized by, and this machine is made of following each several part: with the framework of antirattle spring supporting; Make the machine that shakes that adds of this framework vibration; The screen frame that in above-mentioned framework, sets; Respectively with an end be fixed on two sidewalls of above-mentioned framework, the other end is fixed on the driving spring on the above-mentioned screen frame; Be fixed on the two ends of above-mentioned screen frame,, separate a plurality of strip-shaped parts that set with the gap respectively along the transfer direction of screening materials; And in above-mentioned framework end walls at least one side with above-mentioned screen frame separate decide at interval and fixing impact body.

2, according to the vibrating scalper of claim 1, it is characterized by, the above-mentioned gap size of above-mentioned impact body can be regulated.