CN2095715U - String type arc probability screen - Google Patents
String type arc probability screen Download PDFInfo
- Publication number
- CN2095715U CN2095715U CN 91213109 CN91213109U CN2095715U CN 2095715 U CN2095715 U CN 2095715U CN 91213109 CN91213109 CN 91213109 CN 91213109 U CN91213109 U CN 91213109U CN 2095715 U CN2095715 U CN 2095715U
- Authority
- CN
- China
- Prior art keywords
- screen
- screen cloth
- screening
- cloth
- box
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
- 239000004744 fabric Substances 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 12
- 230000008093 supporting effect Effects 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 3
- 238000012216 screening Methods 0.000 abstract description 18
- 239000003245 coal Substances 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 2
- 238000001035 drying Methods 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000002950 deficient Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Combined Means For Separation Of Solids (AREA)
Abstract
The utility model discloses a string type arc-shaped probability screen, which uses the dry process of wet raw coal to carry out deep screening. Mesh screens (4, 5, 6) are changed into mesh screens in folded surface form and arc form from common mesh screens in flat form, and the sizes of screen meshes are gradually changed from a feed end to a discharge end. Therefore, the screening rate of raw coal is improved, the oversize fraction and the undersize fraction of screening are lowered, and the screen meshes are less plugged by wet coal. The utility model has the advantages of favorable screening effect, advanced technic index, simple device structure, reliable running, low noise, etc.
Description
The utility model belongs to moist raw coal is carried out dry deep-sizing machinery.
In recent years, because the mining mechanization degree improves, the reasons such as increase of dust removing down-hole injection flow rate, cause the external moisture content of raw coal to increase, thereby make the fine-graded dry type screening of raw coal become very difficult, develop a collection of novel screening machine that is used for high moisture content raw coal fine fraction dry type screening both at home and abroad in succession for this reason, as the coal probability of classification screen, uniform thickness piano wire screen etc., these sieves have been obtained remarkable progress on the screening problem that solves high moisture content raw coal, but because the screen cloth of above-mentioned sieve is short, screening speed is fast, make that the movement velocity of material on compass screen surface is very fast, have a lot of fine graineds to have little time sieve and just sneak into the coarse granule, the screening undersize fraction is improved from the discharge of compass screen surface top; Because the screen size score is big from granularity, and the screen size of every layer of screen cloth is identical, makes many coarse granules also see through sieve aperture and enter in the fine grained that sifts out in addition, oversize fraction is increased; The sieve aperture of rectangle is also very easily stopped up by coal slime, causes screening effect to worsen, and above-mentioned defective descends the result of use of these sieves greatly.
The above-mentioned defective that exists in the existing screen cloth screening process proposes the utility model in order to solve just.
Solution of the present utility model is: a becomes common sieving machine midplane shape screen cloth into folding face shape screen cloth and the curved screen with different inclination angle; Inclination angle by each point on the compass screen surface is progressively reduced to exhaust end by material feeding end, and the movement velocity of material on compass screen surface progressively reduced, and material is big in the material feeding end movement velocity of compass screen surface like this, and material is easy to rapid layering, and a large amount of fine graineds can sieve rapidly thoroughly; Material is little in the exhaust end movement velocity, has increased the screening time, helps remaining fine grain sieve, and undersize fraction is minimized.
B: by the identical difference that becomes, from the material feeding end to the exhaust end, screen size reduces gradually with the screen size of every layer of screen cloth, and the big sieve aperture of material feeding end can make the saturating rapidly sieve of a large amount of fine graineds, and the little sieve aperture of exhaust end has limited coarse grained sieve, reduces oversize fraction.
C: two, three layers of screen cloth that will be made of metal wire knitted or welding usually become the string curved screen that is formed by the elastic metallic yarn tensioning, when screening machine is worked, the string screen cloth can carry out secondary vibration in company with screen box, makes particle be difficult for sticking on the silk screen or gets lodged in the sieve aperture.
D: the screen cloth that changes common sieving machine is strained and fixed at two ends by bolt, and is strained and fixed in both sides by press strip and bolt, keeps in repair with facility; Simultaneously the erecting by overhang of sieve nest being become a formula supporting arrangement takes up room so that reduce.
Be elaborated below in conjunction with embodiment of the present utility model:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model string formula curved screen.
By accompanying drawing 1 as can be known: the utility model mainly is made up of: vibrating motor 1, crossbeam 2, screen box 3, screen cloth 4,5,6, pipe beam 7,8,9 and supporting device of the spring 10.Wherein screen box 3 is by supporting device of the spring 10 supportings, pipe beam 7,8,9 be connected to screen box 3 inboard and supporting screen cloth 4,5,6 respectively, screen cloth 4 is folding face shape metal wire knitted screen cloth, sieve aperture is that rectangle, compass screen surface are divided into three sections, and three sections mounted angle is respectively α
1=25 °～35 °; α
2=20 °～30 °; α
3=10 °～20 °; Three sections screen sizes are changed to: α
1＞α
2＞α
3, i.e. first section screen size maximum, the 3rd section screen size minimum.Can be known by accompanying drawing 2 and to find out that screen cloth 5,6 is curved screen, screen size reduces from the material feeding end to the exhaust end gradually; Screen cloth 5,6 is formed by the elastic metallic yarn tensioning that is arranged in parallel; Silk screen is perpendicular to the materials flow direction, and sieve aperture is a strip, and the radian of screen cloth 5,6 is θ=20 °～60 °, radius of curvature R=2～12m, and established angle β=10 °～30 ° of vibrating motors 1, crossbeam 2 is positioned at above the screen box 3 and by bolt and connects.
When two vibrating motor 1 reverse rotations, can produce an exciting force and make screen box 3 moving linearlies, screen cloth 4,5,6 vibrates together in company with screen box 3, meanwhile, screen cloth 5,6 also can produce secondary vibration, go into to sieve raw coal (50～0mm) send into screening machine after, screening process begins, coal grain less than screen cloth 4 falls on the screen cloth 5, coal grain greater than screen cloth 4 sieve apertures is discharged from left end, and raw coal repeats the motion state on screen cloth 4 again on screen cloth 5,6, produce secondary vibration simultaneously, after screening, can obtain the product of four kinds of grades.
Prove through a large amount of pilot-plant tests, the utility model screening efficiency height, technic index advanced person, the raw coal treating capacity is big, and undersize fraction is low, and oversize fraction is low, has simultaneously to occupy little space the advantages such as saving fund.
Claims (3)
1, a kind of novel string formula arc probability screen, mainly form by vibrating motor (1), crossbeam (2), screen box (3), screen cloth (4), (5), (6), Guan Liang (7), (8), (9) and supporting device of the spring (10), wherein vibrating motor (1) and crossbeam (2) are connected in screen box (3) top through bolt, screen box (3) is supported by supporting device of the spring (10), Guan Liang (7), (8), (9) are connected to inboard screen cloth (4), (5), (6), of the present utility model being characterized as of also supporting respectively of screen box (3):
A, screen cloth 4 are folding face shape screen clothes, and screen cloth (5), (6) then are curved screens;
The screen size of b, screen cloth (4), (5), (6) reduces from the material feeding end to the exhaust end gradually.
2, the described string formula of claim 1 arc probability screen is characterized in that screen cloth (4) is a folding face shape metal wire knitted screen cloth, and compass screen surface is divided into three sections, and three sections mounted angle is respectively: α
1=25 °～35 °, α
2=20 °～30 °, α
3=10 °～20 °.
3, the described string formula of claim 1 arc probability screen is characterized in that screen cloth (5), (6) by elastic metallic yarn tensioning camber screen cloth, and radian is θ=20 °～60 °, radius of curvature R=2～12m, established angle β=10 °～30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91213109 CN2095715U (en) | 1991-01-20 | 1991-01-20 | String type arc probability screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91213109 CN2095715U (en) | 1991-01-20 | 1991-01-20 | String type arc probability screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2095715U true CN2095715U (en) | 1992-02-12 |
Family
ID=4921525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91213109 Expired - Lifetime CN2095715U (en) | 1991-01-20 | 1991-01-20 | String type arc probability screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2095715U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100455363C (en) * | 2007-01-30 | 2009-01-28 | 南京理工大学 | Discrete carpolite grading plant |
| CN102205315A (en) * | 2011-05-06 | 2011-10-05 | 符东旭 | Vibration mesh curve screen |
| CN101745502B (en) * | 2008-12-17 | 2013-02-13 | 符东旭 | Multi-layer sieve bend |
| CN103639114A (en) * | 2013-12-05 | 2014-03-19 | 常熟市诚达港务机械设备厂 | Coal screening machine |
| US10227220B2 (en) | 2014-09-22 | 2019-03-12 | Fosbel, Inc. | Methods and apparatus for constructing glass furnace structures |
| CN109772689A (en) * | 2019-02-24 | 2019-05-21 | 新乡市昆仑筛分机械设计有限公司 | A kind of piano wire screen that sieve is cleared up automatically |
| RU2692395C1 (en) * | 2018-10-09 | 2019-06-24 | Федеральное государственное автономное образовательное учреждение высшего образования "Сибирский федеральный университет" | String screen |
-
1991
- 1991-01-20 CN CN 91213109 patent/CN2095715U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100455363C (en) * | 2007-01-30 | 2009-01-28 | 南京理工大学 | Discrete carpolite grading plant |
| CN101745502B (en) * | 2008-12-17 | 2013-02-13 | 符东旭 | Multi-layer sieve bend |
| CN102205315A (en) * | 2011-05-06 | 2011-10-05 | 符东旭 | Vibration mesh curve screen |
| CN102205315B (en) * | 2011-05-06 | 2013-07-10 | 符东旭 | Vibration mesh curve screen |
| CN103639114A (en) * | 2013-12-05 | 2014-03-19 | 常熟市诚达港务机械设备厂 | Coal screening machine |
| US10227220B2 (en) | 2014-09-22 | 2019-03-12 | Fosbel, Inc. | Methods and apparatus for constructing glass furnace structures |
| US11180350B2 (en) | 2014-09-22 | 2021-11-23 | Fosbel, Inc. | Methods and apparatus for constructing glass furnace structures |
| RU2692395C1 (en) * | 2018-10-09 | 2019-06-24 | Федеральное государственное автономное образовательное учреждение высшего образования "Сибирский федеральный университет" | String screen |
| CN109772689A (en) * | 2019-02-24 | 2019-05-21 | 新乡市昆仑筛分机械设计有限公司 | A kind of piano wire screen that sieve is cleared up automatically |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |