CN1221655A - Multi-degree-of-freedom elastic collision screen and screening method thereof - Google Patents
Multi-degree-of-freedom elastic collision screen and screening method thereof Download PDFInfo
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- CN1221655A CN1221655A CN 97107249 CN97107249A CN1221655A CN 1221655 A CN1221655 A CN 1221655A CN 97107249 CN97107249 CN 97107249 CN 97107249 A CN97107249 A CN 97107249A CN 1221655 A CN1221655 A CN 1221655A
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- elastic rod
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- silk screen
- rod silk
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- 238000012216 screening Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 18
- 239000004744 fabric Substances 0.000 claims description 24
- 230000000694 effects Effects 0.000 claims description 22
- 239000003245 coal Substances 0.000 claims description 12
- 230000010355 oscillation Effects 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000007873 sieving Methods 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 claims description 3
- 229910000677 High-carbon steel Inorganic materials 0.000 claims 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims 1
- 229910000617 Mangalloy Inorganic materials 0.000 claims 1
- 229910000720 Silicomanganese Inorganic materials 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000009738 saturating Methods 0.000 description 4
- 238000004513 sizing Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910000954 Medium-carbon steel Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention provides an elastic rod multi-degree-of-freedom collision type screen suitable for dry screening of fine-grained materials and a screening method thereof.
Description
The present invention relates to a kind of raw coal dry deep-sizing technology, especially a kind of multivariant elastic collision deep screening technology and device.
Development and research to the dry deep-sizing of raw coal, up to the present, be still based on the development vibratory sieve, as sieve paintings the speed screening machine of Zhang Yundong and the gyratory sifter extension set that utilizes centrifugal force and gravity to sieve, mainly contain vertical materials flow sieve, the rotation live-roll grizzly, the uniform thickness sieve, several types such as Mo Gensen sieve and piano wire screen, China once successfully introduced above-mentioned different types of machines, aspect the raising Coal Quality, playing some positive roles, but, still fail solution for the problems such as the stifled sieve of principal contradiction of the dry deep-sizing of the ature of coal of some condition differences because the coal geological exploration condition is very complicated; At present both at home and abroad in the developmental research of this technical field, mainly concentrate on two aspects, the one, the vibration shape of screening machine, the 2nd, mesh structure; From the vibration shape is also comparatively ripe based on the technology of circular vibration and straight-line oscillation.String screen cloth, macromolecule screen cloth, reducing screen cloth etc. are arranged aspect mesh structure, as the patent No. be: 88211489 " the new screen clothes of moist raw coal fine fraction screening " and the patent No. are: 90225375.3 " the new and effective screen clothes of special construction ", it mainly is in order to increase percent opening and to improve the oscillation intensity of screening machine so that saturating sieve, but still relatively more difficult when handling moist fine particulate level coal, stifled sieve phenomenon is still more serious.On the compass screen surface structure, present screen frame structure and compass screen surface pattern all are single device of shifting block type structure basically, and it has limited the saturating screen(ing) machine rate and the effective percent opening of material, remains unsolved so improve the problems such as reliability of screening efficiency and mesh structure.
The objective of the invention is to have proposed solution moist fine particulate level raw coal dry deep-sizing technology and equipment thereof in order to overcome above-mentioned the deficiencies in the prior art part, it adopts novel mesh structure, to realize multiple degrees of freedom elastic collision sieve method, it has the self-cleaning effect of screen cloth own, so the screening percentage of moist fine particulate level raw coal is obviously improved.
Task of the present invention is implemented as follows: a kind of elastic rod multiple degrees of freedom collision type screen cloth, the stringer board of transverse slat and back transverse slat and a middle supporting plate and both sides was fixedly connected into screen frame before it included, the many elastic rod silk screens that are arranged in parallel are housed in the framework constitute screen cloth, framework front upper fixed has front apron, and its back top loose joint has backboard; It between elastic rod silk screen and screen frame wall matched in clearance.A kind of multiple degrees of freedom elastic collision method for sieving, (1) is fixed in and is furnished with many elastic rod silk screens in the screen frame wall on the screening machine and forms screen clothes, leave certain axial and radial clearance between elastic rod silk screen and screen frame wall, screen frame is under the vibration force effect, make the elastic rod silk screen produce multivariant elastic oscillation, under the effect of its elastic collision energy, make elastic rod silk screen itself produce strain and displacement again; (2) feed inlet end of the moist raw coal of fine fraction from above-mentioned screening machine fed the screen cloth, material is under the effect of the elastic rod silk screen of elastic oscillation, flow to exhaust end by feeding end, under the effect that the instantaneous acceleration effect and the compass screen surface material loading group of collision are flowed, again the elastic rod silk screen is produced self clean-up action, and the loose effect and the layered effect of raising material, make it avoid stifled sieve and sticking sieve, thereby can improve screening efficiency greatly.
The present invention has following advantage compared with prior art: multiple degrees of freedom elasticity sieve method idea novelty, to sieve effectively thoroughly, and it utilizes collision energy to improve screening efficiency and classification lower limit; Because the single layout of its screen cloth, screen frame is vibrated with main frame, the elastic rod silk screen is then by the gap that cooperates with framework and the rigidity of self, producing the multiple degrees of freedom elastic collision under the system force effect and between the screen frame wall, make silk screen generation strain and displacement, avoid the sticking stifled and rigid jam of moist fine particulate stage material on screen cloth.Because the acting in conjunction that collision energy and compass screen surface material loading group are flowed, improved the loose effect and the layered effect of moist fine particulate stage material, make material obtain the acceleration of the saturating sieve of bigger extruding, thereby be able to the saturating sieve of continuous high-efficient.Screen cloth is that single silk screen is arranged, silk screen is changed easily, and it is simple in structure, makes the influence that it is not changed by the material fluctuation easily; It is applicable to the various screening types based on circular vibration and straight-line oscillation.Type approval test proves through Zhengzhou mineral bureau, and its screening effect is remarkable, improves about 10%, and aspects such as screen life-span, manufacturing cost all are better than existing screening machine.
Description of drawings:
Fig. 1 is a structure chart of the present invention.
Fig. 2 is that the A of structure chart of the present invention is to view.
Fig. 3 is the side view of structure chart of the present invention.
Below in conjunction with accompanying drawing embodiments of the invention are described in further detail: as shown in Figures 1 and 2, it is made up of front apron 1, elastic rod silk screen 2, preceding transverse slat 3, supporting plate 4, stringer board 5, screw 6, backboard 7 and back transverse slat 8, wherein front apron 1 and backboard 7 are block length square plates, one row's screw hole is arranged on the backboard 7, elastic rod silk screen 2 is round bars, it is made by high rigidity and highly elastic material, as 65M
N, 60Si
2And high, medium carbon steel makes, and is arranged in parallel by many elasticity silk screens, on transverse slat 3, back transverse slat 8 and the supporting plate 4, constitutes screen cloth before being contained in; Before transverse slat 3 and back transverse slat 8 are block length square plates, its top has row's manhole, its aperture is that D is bigger than elastic rod silk screen 2 diameter d, i.e. D＞d, the below of the circular hole of back transverse slat 8 has one to arrange screw hole; Supporting plate 4 is block length square plates, and there is row's manhole its top, and its aperture D is greater than elastic rod silk screen 2 diameter d; Stringer board 5 is block length square plates, and its length is greater than elastic rod silk screen 2; Be welded into screen frame by supporting plate 4 in the middle of transverse slat 8 behind the preceding transverse slat of each stringer board 5 of both sides and one 3, one and, front apron 1 is fixing with preceding transverse slat 3 welding of framework front upper, and the circular hole termination on the transverse slat 3 before it is sealed, before elastic rod silk screen 2 packed in the circular hole of transverse slat 3, middle supporting plate 4 and back transverse slat 8, make to be matched in clearance between elastic rod silk screen 2 and screen frame, its cooperation place is radial and axial all gapped.With screw 6 that backboard 7 is fixing in the back of framework, backboard 7 retainings round tube hole outside on preceding transverse slat 3 makes elastic rod silk screen 2 can be in the hole free movable and do not skid off, and removes backboard 7 but screw 6 is turned on the back, can freely change elastic rod silk screen 2.As shown in Figure 1: (one) method for sieving of the present invention is as follows: because the silk screen in the screen cloth of this screening machine is single layout in a row, leave radial and axial fit clearance between elastic rod silk screen 2 and screen frame wall, when so screen frame vibrates with main frame under exciting force P effect, every silk screen of screen cloth all can produce multivariant elastic oscillation in the confined space, make elastic rod silk screen 2 itself produce strain and displacements under the effect of its elastic collision energy again; (2) feed end of the moist raw coal of fine fraction from above-mentioned screening machine fed in screen cloth, material is under elastic rod silk screen 2 work of doing elastic oscillation, flow to exhaust end by feeding end, under the effect that the material group is flowed, again elastic rod silk screen 2 is produced self clean-up action, make it avoid stifled sieve and sticking sieve, thereby can improve screening efficiency greatly.
Claims (7)
1. elastic rod multiple degrees of freedom collision type screen cloth, it is characterized in that: the stringer board (5) that it includes preceding transverse slat (3) and back transverse slat (8) and a middle supporting plate (4) and both sides is fixedly connected into screen frame, the many elastic rod silk screens (2) that are arranged in parallel are housed in the framework constitute screen cloth, framework front upper fixed has front apron (1), and its back top loose joint has backboard (7); Be matched in clearance between elastic rod silk screen (2) and screen frame wall.
2. elastic rod multiple degrees of freedom collision type screen cloth according to claim 1, its spy just is: transverse slat (3), back transverse slat (8) and middle supporting plate (4) are rectangular slabs before described, one row's manhole is all arranged at its top, and the diameter of this manhole is bigger than the diameter of elastic rod silk screen (2); The below of the manhole of back transverse slat (8) also has row's screw hole.
3. elastic rod multiple degrees of freedom collision type screen cloth according to claim 1 and 2 is characterized in that: described elastic rod silk screen (2) is an elongated round bar, has between it and screen frames axially and radial clearance.
4. elastic rod multiple degrees of freedom collision type screen cloth according to claim 1 is characterized in that: top, described screen frame back is fixing with backboard (7) by screw (6).
5. elastic rod multiple degrees of freedom collision type screen cloth according to claim 1, it is characterized in that: described elastic rod silk screen (2) is made by manganese steel or silico-manganese steel material.
6. elastic rod multiple degrees of freedom collision type screen cloth according to claim 1, it is characterized in that: described elastic rod silk screen (2) is made by high-carbon steel or mild steel material.
7. multiple degrees of freedom elastic collision method for sieving, it is characterized in that: (one) is fixed in and is furnished with many elastic rod silk screens (2) in the screen frame wall on the screening machine and forms screen cloth, leave certain axial and radial clearance between elastic rod silk screen (2) and screen frame wall, screen frame is under the vibration force effect, make elastic rod silk screen (2) produce multivariant elastic oscillation, under the effect of its elastic collision energy, make elastic rod silk screen (2) itself produce strain and displacement again; (2) feed inlet end of the moist raw coal of fine fraction from above-mentioned screening machine fed the screen cloth, material is under the effect of the elastic rod silk screen (2) of elastic oscillation, flow to exhaust end by feeding end, under the effect that the instantaneous acceleration effect and the compass screen surface material loading group of collision are flowed, again elastic rod silk screen (2) is produced self clean-up action, and the loose effect and the layered effect of raising material, make it avoid stifled sieve and sticking sieve, thereby can improve screening efficiency greatly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97107249 CN1221655A (en) | 1997-12-27 | 1997-12-27 | Multi-degree-of-freedom elastic collision screen and screening method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97107249 CN1221655A (en) | 1997-12-27 | 1997-12-27 | Multi-degree-of-freedom elastic collision screen and screening method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1221655A true CN1221655A (en) | 1999-07-07 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97107249 Pending CN1221655A (en) | 1997-12-27 | 1997-12-27 | Multi-degree-of-freedom elastic collision screen and screening method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100387364C (en) * | 2006-07-15 | 2008-05-14 | 中国矿业大学 | Fluctuating rigid lever passive vibration impact type sieve plate |
| US7617938B2 (en) | 2006-05-09 | 2009-11-17 | China University Of Mining And Technology | Elastic sieving technique and corresponding large-sized elastic vibration screen |
| CN101249493B (en) * | 2008-03-27 | 2012-05-23 | 中国矿业大学 | Mosaic type elastic compound sieve plate |
| CN106731930A (en) * | 2016-12-13 | 2017-05-31 | 安徽理工大学 | The system and method that a kind of filter-pressing coal slime cake and gravity treatment Coarse Coal are uniformly blended |
| CN110639789A (en) * | 2019-09-11 | 2020-01-03 | 新昌县彭诚农业科技有限公司 | Elastic rod sieve plate for sticky wet coal automatically cleaned by using speed difference |
-
1997
- 1997-12-27 CN CN 97107249 patent/CN1221655A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7617938B2 (en) | 2006-05-09 | 2009-11-17 | China University Of Mining And Technology | Elastic sieving technique and corresponding large-sized elastic vibration screen |
| CN100387364C (en) * | 2006-07-15 | 2008-05-14 | 中国矿业大学 | Fluctuating rigid lever passive vibration impact type sieve plate |
| CN101249493B (en) * | 2008-03-27 | 2012-05-23 | 中国矿业大学 | Mosaic type elastic compound sieve plate |
| CN106731930A (en) * | 2016-12-13 | 2017-05-31 | 安徽理工大学 | The system and method that a kind of filter-pressing coal slime cake and gravity treatment Coarse Coal are uniformly blended |
| CN106731930B (en) * | 2016-12-13 | 2023-10-03 | 安徽理工大学 | System and method for uniformly blending filter-pressed coal slime cakes and gravity coarse-grain coal |
| CN110639789A (en) * | 2019-09-11 | 2020-01-03 | 新昌县彭诚农业科技有限公司 | Elastic rod sieve plate for sticky wet coal automatically cleaned by using speed difference |
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