CN101664737A - Multilevel screen type vibration screening device - Google Patents

Multilevel screen type vibration screening device Download PDF

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Publication number
CN101664737A
CN101664737A CN200910192319A CN200910192319A CN101664737A CN 101664737 A CN101664737 A CN 101664737A CN 200910192319 A CN200910192319 A CN 200910192319A CN 200910192319 A CN200910192319 A CN 200910192319A CN 101664737 A CN101664737 A CN 101664737A
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CN
China
Prior art keywords
screen
screen cloth
vibrating
aperture
network segment
Prior art date
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Pending
Application number
CN200910192319A
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Chinese (zh)
Inventor
张松鸿
危敬权
叶卫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GUANGDONG LVZHOU FERTILIZER CO Ltd
Original Assignee
GUANGDONG LVZHOU FERTILIZER CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by GUANGDONG LVZHOU FERTILIZER CO Ltd filed Critical GUANGDONG LVZHOU FERTILIZER CO Ltd
Priority to CN200910192319A priority Critical patent/CN101664737A/en
Publication of CN101664737A publication Critical patent/CN101664737A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a multilevel screen type vibration screening device which comprises a box body, a damper spring supporting the box body and a vibrating mechanism, wherein the vibrating mechanism is arranged on the box body, a feed inlet is arranged at the upper end of the box body, discharge holes are arranged at the lower end of the box body, two screens are arranged in the box body, thescreens are arranged in the box body from top to bottom in an inclined way and in a mode that screen hole diameter increases progressively, the lowest end of each screen corresponds to one discharge hole, the screen holes are distributed in multi sections according to the screen diameter and the screen hole diameter increases progressively along the inclined direction, the position under each section with different screen hole diameters at the bottom also corresponds to one discharge hole, and the feed inlet is positioned directly over the screen at the top. The multilevel screen type vibration screening device is capable of realizing the screening of multi-size composite fertilizer, thus improving the evenness of composite fertilizer granule and further improving resource utilization efficiency.

Description

Multilevel screen type vibration screening device
Technical field
The present invention relates to a kind of processing equipment unit of composite fertilizer, relate more specifically to a kind of multilevel screen type vibration screening device of realizing the many particle diameter screenings of composite fertilizer.
Background technology
Along with economy constantly develops, agricultural production goes from strength to strength, and fertilizer scope of application in agricultural production becomes more and more widely, with the needs in each field of being adapted to agricultural production.At present, the fertilizer that is applied to agricultural production mainly contains chemical fertilizer of simple substance and the polyelement composite fertilizer that contains nitrogen, phosphorus, potassium and other nutrient, wherein, the production prilling process of polyelement composite fertilizer mainly contains granulating method, slurry process, extrusion, blending method and high tower spray process.
At present; the production technology of the comminutor of polyelement composite fertilizer is that the material with nitrogenous element melts to technological temperature; under hot state, mix the flowable compound slip that is in a liquid state that becomes to have uniform temperature with the powder material of phosphorus element-containing and the powder material that contains potassium element; prilling spry by the special use composite fertilizer's slip that is in a liquid state that will mix is ejected in the cooling media with the form of drop again; drop is shrunk to the solid particle of spheroidal automatically in the process that contacts cooling with refrigerant, thereby finishes the polyelement composite fertilizer production process.But; in granulation process; because the influence of granulation imperfection or the unequal factor of stressed size; make that cooled solid particle size is inhomogeneous; and some occurring can't be as the non-finished product of sale of finished goods: the block condensation product of composite fertilizer's powder or composite fertilizer; thereby need the block condensation product of these composite fertilizer's powder or composite fertilizer is reclaimed; and melt again and carry out granulation; therefore the particle that comes out from the comminutor screening plant of need entering is processed; do not become the particle of spheroidal to reclaim and granulation again to sieve out powder and big bulk etc., to guarantee the quality and the conservation of product.
At present, what the device that composite fertilizer is sieved generally used is screen type vibration screening device, and the screen type vibration screening device of prior art comprises frame, vibrating mechanism and screen cloth.Described screen cloth is generally two, and screen-aperture generally adopts 1.5mm and 4.75mm.In screening process; enter screen type vibration screening device through comminutor granulation and cooled particle; it with the aperture respectively the sieve of 1.5mm and 4.75mm; filter out particle diameter less than the granule of 1.5mm and powder and particle diameter greater than the bulky grain of 4.75mm as returning charge; and mouthful returning comminutor granulation again by reclaiming, remaining particle is the finished product of sale.
The screen type vibration screening device of prior art causes the compound fertilizer granules that sieves out to have big or small uneven shortcoming equally because the aperture span of screen cloth is big.The two-stage screen cloth that the shaking-sieving device of prior art adopts can only filter out finished product and non-finished product, and the particle diameter of finished product is distributed between 1.5mm~4.75mm, crosses over greatly, causes integral body even inadequately.But extensive use along with compound fertilizer, in order to guarantee that the composite fertilizer that is applied on the plant can satisfy the needed nutrient of various plants, for waste that reduces composite fertilizer and the pollution that avoids waste and brought to environment, thus composite fertilizer factory produced various composite fertilizers are carried out classifying packing according to the size of compound fertilizer granules is very necessary.Because when different types of plant is applied fertilizer, need scientifically to select to be fit to the composite fertilizer of crop absorption and the granular size of this compound fertilizer granules neatly according to the concrete conditions of crops, the size according to compound fertilizer granules that the user directly selects composite fertilizer factory to produce is as required carried out the composite fertilizer of classifying packing to getting final product by crop fertilization, need not artificial screening, not only easy but also practical, and can reduce the pollution that waste and waste brought of fertilizer again to environment.In addition, the uniformity of compound fertilizer granules size is not only causing great influence to composite fertilizer qualitatively, brings negative influence also for the popularization and the sale of composite fertilizer, and under the situation of equal quality, people can buy evengranular composite fertilizer.Therefore the screen type vibration screening device of prior art can not satisfy the requirement of multistage particle diameter screening.
Therefore, be necessary to provide a kind of multilevel screen type vibration screening device of the many particle diameter screenings of composite fertilizer of realizing to overcome above-mentioned defective.
Summary of the invention
The purpose of this invention is to provide a kind of multilevel screen type vibration screening device, can realize the many sizings of composite fertilizer, thereby improve the uniformity of compound fertilizer granules and then improve the level of resources utilization.
To achieve these goals, the invention provides a kind of multilevel screen type vibration screening device, comprise casing, support the shock-absorbing spring and the vibrating mechanism of described casing, described vibrating mechanism is installed on the described casing, upper end at described casing offers charging aperture, lower end at described casing offers discharging opening, also be provided with at least two screen clothes in the described casing, that described screen cloth is inclination and be arranged in from top to bottom in the described casing in the mode that screen-aperture progressively successively decreases, the least significant end of each described screen cloth is respectively to there being a described discharging opening, the screen-aperture of each described screen cloth is the multistage distribution and along inclined direction progressively increases progressively, and be in the screen-aperture of the described screen cloth of below distribute each different sections under also respectively to a described discharging opening should be arranged, described charging aperture be positioned at the described screen cloth that is in the top directly over.
Preferably, each section that the screen-aperture of each described screen cloth distributes different is connected with a described vibrating mechanism respectively, the power of described vibrating mechanism is along with the change of the screen-aperture of described screen cloth increases greatly, and the frequency of described vibrating mechanism is along with the change of the screen-aperture of described screen cloth reduces greatly.
Preferably, the angle of inclination of described screen cloth is between 0 ° to 30 °.
Preferably, the screen-aperture of described screen cloth is between 2 millimeters to 5 millimeters.
Compared with prior art, the present invention adopts a plurality of screen clothes that compound fertilizer granules is sieved, that described screen cloth is inclination and be arranged in from top to bottom in the described casing in the mode that screen-aperture progressively successively decreases, and the screen-aperture of each described screen cloth is the multistage distribution and along inclined direction progressively increases progressively, thereby it is that multilevel screen type vibration screening device successively repeatedly sieves through described a plurality of screen clothes and the different multistage of screen-aperture that the compound fertilizer granules after the granulation tower granulation enters this, realize the screening of non-finished product and finished product, and realize the many particle diameter segmentations of finished product, thereby improve the uniformity of composite fertilizer's finished product integral body, and then improve the utilization ratio and the pollution that reduces environment of composite fertilizer, and then effectively improve sales volume.
By following description also in conjunction with the accompanying drawings, it is more clear that the present invention will become, and these accompanying drawings are used to explain embodiments of the invention.
Description of drawings
Fig. 1 is the structural representation of first embodiment of multilevel screen type vibration screening device of the present invention.
Fig. 2 is the planar structure schematic diagram of first screen cloth of multilevel screen type vibration screening device of the present invention.
Fig. 3 is the planar structure schematic diagram of second screen cloth of multilevel screen type vibration screening device of the present invention.
Fig. 4 is the structural representation of second embodiment of multilevel screen type vibration screening device of the present invention.
The specific embodiment
With reference now to accompanying drawing, describe embodiments of the invention, the similar elements label is represented similar elements in the accompanying drawing.As mentioned above, the invention provides a kind of
With reference to figure 1, first preferred embodiment of the invention has been described.At first please refer to Fig. 1, multilevel screen type vibration screening device of the present invention comprises casing 100, support the shock-absorbing spring 110 of described casing and be installed in vibrating mechanism 120 on the described casing 100, be provided with charging aperture 130 in the upper end of described casing 100, be provided with discharging opening 140 in the lower end of described casing 100, be provided with a plurality of screen clothes in the described casing 100.In the present embodiment, described screen cloth comprises elementary screen cloth 150 and secondary screen cloth 160, and the mode that described elementary screen cloth 150 and secondary screen cloth 160 are inclination is arranged in the described casing 100 from top to bottom, be specially that described elementary screen cloth 150 is positioned at the top of described casing 100 and the most significant end of described elementary screen cloth 150 is connected described casing 100 respectively with least significant end, described secondary screen cloth 160 be positioned at described elementary screen cloth 150 under and the most significant end of described secondary screen cloth 160 be connected described casing 100 respectively with least significant end.
With reference to figure 2~3, described elementary screen cloth 150, the screen-aperture of secondary screen cloth 160 varies in size and is multistage and distributes and along inclined direction progressively increase progressively, as shown in Figure 2, the screen-aperture of described elementary screen cloth 150 divides two ends to distribute, specifically comprise first network segment 151 and second network segment 152, and the screen-aperture of first network segment 151 is less than the screen-aperture of second network segment 152, the screen-aperture of described secondary screen cloth 160 divides four ends to distribute, specifically comprise the 3rd network segment 161, the 4th network segment 162, the 5th network segment 163 and the 6th network segment 164, described the 3rd network segment 161, the 4th network segment 162, the screen-aperture of the 5th network segment 163 and the 6th network segment 164 increases progressively successively, and described the 3rd network segment 161, the screen-aperture of the 4th network segment 162 less than/equal described first network segment 1516, described the 5th network segment 163, the 6th network segment 164 screen-apertures less than/equal described second network segment 152.The concrete size of the screen-aperture of screen cloth can be provided with according to the demand of composite fertilizer's finished product, the particle diameter of considering composite fertilizer's finished product mostly is distributed in 2~5mm, the screen-aperture that first network segment 151 of described elementary screen cloth 150 can be set is 3mm, and the screen-aperture of second network segment 152 is 5mm; The screen-aperture that the 3rd network segment 161 of described secondary screen cloth 160 is set is 2mm, and the screen-aperture of the 4th network segment 162 is 3mm, and the screen-aperture of described the 5th network segment 163 is 4mm, and the screen-aperture of the 6th network segment 164 is 5mm.
Refer again to Fig. 1, the angle of inclination of described elementary screen cloth 150 and secondary screen cloth 160 (and angle of the parallel surfaces of described casing 100 lower surface) is between 10 degree are spent to 30, the angle of inclination of described elementary screen cloth 150, secondary screen cloth 160 increases, can improve screening efficiency, but reduce screening quality.Therefore in the present embodiment, the angle of inclination A1 of described elementary screen cloth 150 and the angle of inclination A2 of described secondary screen cloth 160, particularly, all get A1=15 °, A2=15 °, like this, when compound fertilizer granules when entering described casing 100, thereby can make compound fertilizer granules on elementary screen cloth 150 and secondary screen cloth 160, fully can prevent that again the accumulation of compound fertilizer granules on screen cloth from improving the quality of screening in the screening.
Correspondingly, described discharging opening 140 comprises first discharging opening 141, second discharging opening 142, the 3rd discharging opening 143, the 4th discharging opening 144, the 5th discharging opening 145 and the 6th discharging opening 146, described first discharging opening 141, second discharging opening 142 be arranged on described casing 100 the lower end and respectively with described elementary screen cloth 150, secondary screen cloth 160 least significant end correspondences, be described first discharging opening, 141 corresponding described elementary screen clothes 150, the compound fertilizer granules that can't see through described elementary screen cloth 150 leaves described multilevel screen type vibration screening device by described first discharging opening 141 and enters follow-up operation; In like manner, described second discharging opening, 142 corresponding described secondary screen clothes 160.Described the 3rd discharging opening 143, the 4th discharging opening 144, the 5th discharging opening 145 and the 6th discharging opening 146 be arranged on the bottom of described casing 100 and respectively with the 3rd network segment 161 of described secondary screen cloth 160, the 4th network segment 162, the 5th network segment 163 and the 6th network segment 164 correspondences are through the 3rd network segment 161 of described secondary screen cloth 160, the 4th network segment 162, the compound fertilizer granules of the 5th network segment 163 and the 6th network segment 164 is respectively by described the 3rd discharging opening 143, the 4th discharging opening 144, the 5th discharging opening 145 and the 6th discharging opening 146 leave described multilevel screen type vibration screening device and enter follow-up operation.
Correspondingly, described vibrating mechanism 120 comprises first vibrating mechanism 121, second vibrating mechanism 122, the 3rd vibrating mechanism 123 and the 4th vibrating mechanism 124, described first vibrating mechanism 121, second vibrating mechanism 122, the 3rd vibrating mechanism 123 and the 4th vibrating mechanism 124 are arranged on the top of described casing 100 and respectively over against the 3rd network segment 161 of described secondary screen cloth 160, the 4th network segment 162, the 5th network segment 163 and the 6th network segment 164, be that described first vibrating mechanism 121 is over against described the 3rd network segment 161, described second vibrating mechanism 122 is over against described the 4th network segment 162, described the 3rd vibrating mechanism 123 over against described the 5th network segment 163 and described the 4th vibrating mechanism 124 over against described the 6th network segment 164.Screening theory according to particle: adopt large amplitude and small frequency can obtain best screening effect for the big particle of particle diameter,, adopt little amplitude and big frequency then can obtain best screening effect for the little particle of particle diameter.Therefore, in the present embodiment, the power that described first vibrating mechanism 121, second vibrating mechanism 122, the 3rd vibrating mechanism 123 and the 4th vibrating mechanism 124 are set increases progressively successively, and frequency reduces successively.Like this, under the vibration effect of the vibrating mechanism of different capacity and frequency, the different segment of described elementary screen cloth 150 and secondary screen cloth 160 has different amplitudes and frequency, thereby compound fertilizer granules can be separated apace on the different segment of each screen cloth, promote the saturating sieve of compound fertilizer granules, and then improve screening efficiency and production capacity.
Preferably, described charging aperture 130 is installed in the upper end of described casing 100 and over against described elementary screen cloth 150, the compound fertilizer granules that enters described casing 100 from described charging aperture 130 is under the gravity effect of itself, directly pat on described elementary screen cloth 150, thereby strengthen the acceleration of gravity of the saturating sieve of compound fertilizer granules, the very fast sedimentation of granule is contacted and saturating fast sieve with compass screen surface, and effectively reduce the sieve pore blockade phenomenon, reach desirable screening effect.
Specifically describe the screening process of present embodiment screening plant now.With reference to figure 1, when compound fertilizer granules enters in the described casing 100 from the charging aperture 130 on the described casing 100, thereby contact with first network segment 151 of described elementary screen cloth 150 and to carry out the elementary screening first time, (particle diameter≤3mm) sees through described first network segment 151 to compound fertilizer granules under the effect of described first vibrating mechanism 121 and second vibrating mechanism 122, and can't see through the compound fertilizer granules (particle diameter 〉=3mm) under the effect of gravity of described first network segment 151, second network segment 152 that advances to described elementary screen cloth 150 along the incline direction of described first screen cloth 150 carries out the elementary screening second time, (particle diameter≤5mm) sees through described second network segment 152 to compound fertilizer granules under the effect of described the 3rd vibrating mechanism 123 and the 4th vibrating mechanism 124, and can't see through the compound fertilizer granules (particle diameter 〉=5mm) under the effect of gravity of described second network segment 152, advance and discharge along the incline direction of described elementary screen cloth 150 and enter next link operation through described first discharging opening 141, simultaneously, the compound fertilizer granules that sees through first network segment 151 of described elementary screen cloth 150 and second network segment 152 drops on the enterprising places level screening of each network segment that is positioned at the secondary screen cloth 160 under the described elementary screen cloth 150, in view of the principle of secondary screening and elementary screening is the same, be not described in detail at this.At last, the compound fertilizer granules that sees through described the 3rd network segment 161, the 4th network segment 162, the 5th network segment 163 and the 6th network segment 164 is discharged from described the 3rd discharging opening 143, the 4th discharging opening 144, the 5th discharging opening 145 and the 6th discharging opening 146, enters next link operation.
Understandably, present embodiment adopts two screen clothes to sieve out composite fertilizer's finished product of four kinds of different-grain diameters altogether, and more careful, more kinds of particle diameters of wanting to sieve distribute, as long as correspondingly increase the different screen cloth of screen-aperture or the network segment.Described first discharging opening 141 and second discharging opening 142 can be used as the block mouth that reclaims, and the screen-aperture of the 3rd network segment 161 of described secondary screen cloth 160 is provided with more hour, described the 3rd discharging opening 143 can be used as the Powder Recovery mouth and uses, and returns granulation tower as returning charge and carries out granulation again from a described Powder Recovery mouth and the block mouthful compound fertilizer granules of discharging that reclaims.
With reference to figure 2, shown second embodiment of multilevel screen type vibration screening device of the present invention.Identical with multilevel screen type vibration screening device first embodiment of the present invention, the multilevel screen type vibration screening device that Fig. 3 shows comprises casing 200, support the shock-absorbing spring 210 of described casing and be installed in vibrating mechanism 220 on the described casing 200, be provided with charging aperture 230 in the upper end of described casing 100, be provided with discharging opening 240 in the lower end of described casing 100, be provided with a plurality of screen clothes in the described casing 100.Described screen cloth 250 specifically comprises elementary screen cloth 250 and secondary screen cloth 260, the mode that described elementary screen cloth 250 and secondary screen cloth 260 are inclination is arranged in the described casing 200 from top to bottom, and described elementary screen cloth 250, the screen-aperture of secondary screen cloth 260 varies in size and is multistage and distributes and along inclined direction progressively increase progressively, specifically comprise first network segment 251 and second network segment 252, and the screen-aperture of first network segment 251 is less than the screen-aperture of second network segment 252, the screen-aperture of described secondary screen cloth 260 divides four ends to distribute, specifically comprise the 3rd network segment 261, the 4th network segment 262, the 5th network segment 263 and the 6th network segment 264, described the 3rd network segment 261, the 4th network segment 262, the screen-aperture of the 5th network segment 263 and the 6th network segment 264 increases progressively successively.Present embodiment is with the different of first preference: (1) described charging aperture 230 is arranged on the upper end of described casing 200 and is connected with the most significant end of described elementary screen cloth 250, like this, the compound fertilizer granules that enters from described charging aperture 230 aligns the thrust along the compound fertilizer granules direction of advance of the compound fertilizer granules that can't sieve generation of sieving, thereby prevent that particle from piling up on screen cloth, improve screening efficiency.(2) described vibrating mechanism 220 comprises first vibrating mechanism 221, second vibrating mechanism 222, the 3rd vibrating mechanism 223, the 4th vibrating mechanism 224, the 5th vibrating mechanism 225 and the 6th vibrating mechanism 226, described first vibrating mechanism 221, second vibrating mechanism 222, the 3rd vibrating mechanism 223, the 4th vibrating mechanism 224, the 5th vibrating mechanism 225 and the 6th vibrating mechanism 226 direct correspondences are installed in described first network segment 251, second network segment 252, the 3rd network segment 261, the 4th network segment 262, on the 5th network segment 263 and the 6th network segment 264, in this screening course of work, described casing 200 does not vibrate, only screen cloth vibration, ginseng is shaken in light weight, the frequency height improves screening efficiency and production capacity.The power of described first vibrating mechanism 221, second vibrating mechanism 222, the 3rd vibrating mechanism 223, the 4th vibrating mechanism 224, the 5th vibrating mechanism 225 and the 6th vibrating mechanism 226 and the setting of frequency are consistent with the setting of first embodiment.
Above invention has been described in conjunction with most preferred embodiment, but the present invention is not limited to the embodiment of above announcement, and should contain various modification, equivalent combinations of carrying out according to essence of the present invention.

Claims (4)

1. multilevel screen type vibration screening device, comprise casing, support the shock-absorbing spring and the vibrating mechanism of described casing, described vibrating mechanism is installed on the described casing, upper end at described casing offers charging aperture, lower end at described casing offers discharging opening, it is characterized in that: also be provided with at least two screen clothes in the described casing, that described screen cloth is inclination and be arranged in from top to bottom in the described casing in the mode that screen-aperture progressively successively decreases, the least significant end of each described screen cloth is respectively to there being a described discharging opening, the screen-aperture of each described screen cloth is the multistage distribution and along inclined direction progressively increases progressively, and be in the screen-aperture of the described screen cloth of below distribute each different sections under also respectively to a described discharging opening should be arranged, described charging aperture be positioned at the described screen cloth that is in the top directly over.
2. multilevel screen type vibration screening device as claimed in claim 1, it is characterized in that: each section that the screen-aperture of each described screen cloth distributes different is connected with a described vibrating mechanism respectively, the power of described vibrating mechanism is along with the change of the screen-aperture of described screen cloth increases greatly, and the frequency of described vibrating mechanism is along with the change of the screen-aperture of described screen cloth reduces greatly.
3. multilevel screen type vibration screening device as claimed in claim 1 is characterized in that: the angle of inclination of described screen cloth is between 0 ° to 30 °.
4. multilevel screen type vibration screening device as claimed in claim 1 is characterized in that: the screen-aperture of described screen cloth is between between the 2mm to 5mm.
CN200910192319A 2009-09-14 2009-09-14 Multilevel screen type vibration screening device Pending CN101664737A (en)

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Application Number Priority Date Filing Date Title
CN200910192319A CN101664737A (en) 2009-09-14 2009-09-14 Multilevel screen type vibration screening device

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Application Number Priority Date Filing Date Title
CN200910192319A CN101664737A (en) 2009-09-14 2009-09-14 Multilevel screen type vibration screening device

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CN101664737A true CN101664737A (en) 2010-03-10

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103480567A (en) * 2013-09-25 2014-01-01 长安大学 Coarse aggregate separating device for cement concrete uniformity test
CN106216363A (en) * 2016-08-31 2016-12-14 上海同济普兰德生物质能股份有限公司 A kind of changing food waste sorting pretreatment unit
CN108015004A (en) * 2017-11-24 2018-05-11 安徽睿知信信息科技有限公司 A kind of goods screening separator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103480567A (en) * 2013-09-25 2014-01-01 长安大学 Coarse aggregate separating device for cement concrete uniformity test
CN103480567B (en) * 2013-09-25 2015-06-17 长安大学 Coarse aggregate separating device for cement concrete uniformity test
CN106216363A (en) * 2016-08-31 2016-12-14 上海同济普兰德生物质能股份有限公司 A kind of changing food waste sorting pretreatment unit
CN106216363B (en) * 2016-08-31 2018-10-26 上海同济普兰德生物质能股份有限公司 A kind of kitchen garbage sorting pretreatment unit
CN108015004A (en) * 2017-11-24 2018-05-11 安徽睿知信信息科技有限公司 A kind of goods screening separator

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Application publication date: 20100310