CN105312231A - Flip-flow screen with increasing screen surface opening percentages - Google Patents
Flip-flow screen with increasing screen surface opening percentages Download PDFInfo
- Publication number
- CN105312231A CN105312231A CN201510891012.2A CN201510891012A CN105312231A CN 105312231 A CN105312231 A CN 105312231A CN 201510891012 A CN201510891012 A CN 201510891012A CN 105312231 A CN105312231 A CN 105312231A
- Authority
- CN
- China
- Prior art keywords
- screen
- draw
- groove
- sieve
- screen surface
- 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.)
- Granted
Links
- 229920002635 polyurethane Polymers 0.000 claims description 12
- 239000004814 polyurethane Substances 0.000 claims description 12
- 230000002401 inhibitory effect Effects 0.000 claims description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 abstract description 10
- 238000012216 screening Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 239000003245 coal Substances 0.000 description 5
- 230000006378 damage Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/48—Stretching devices for screens
Landscapes
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention discloses a flip-flow screen with increasing screen surface opening percentages. The flip-flow screen with the increasing screen surface opening percentages is characterized by comprising N screen plate device units, wherein each screen plate device unit comprises M identical screen plate devices; the screen plate opening percentages of the screen plate device units increase in a direction from a feeding end to a discharging end; each screen plate device comprises a cross beam, a support frame and a screen plate; the opening percentage of the screen plate has a significant influence on the service life and screening effect of the screen plate; and the decreasing of the opening percentage correspondingly enlarges the net sectional area of the screen surface, can enhance the strength of the screen surface of the flip-flow screen, and reduces the deformation of the screen surface of the flip-flow screen when large-particle materials impact the flip-flow screen.
Description
Technical field
The present invention relates to a kind of flip flop screen, be specifically related to the flip flop screen that a kind of compass screen surface percent opening increases progressively.
Background technology
In Coal dressing process, coal separation has become the requisite operation of coal preparation plant, and flip flop screen is owing to adopting polyurethane flexible sieve plate, compass screen surface amplitude is large, scatter radius is high, better to the screening effect of sticky wet particulate coal, is applied widely in coal deep screening field; The screen-penetrating performance of polyurethane sieve plate is strong, and sieve aperture is not easy blocking, can reduce the slime content produced in production.But existing flip flop screen each compass screen surface percent opening is consistent, do not consider that the coarsegrain materials such as the spoil mixed in fine are to the destruction of feeding end compass screen surface, feeding end compass screen surface directly bears coarsegrain material impacting, the impulsive force that material drop is formed all is born by elastic screen surface, easily cause flip flop screen sieve plate to be broken, tear, cause the life-span of compass screen surface greatly to shorten.
The mounting means of current domestic flip flop screen compass screen surface mainly contains two kinds: the embedded and bolt connecting type of draw-in groove.Draw-in groove is embedded without the need to securing member, change compass screen surface convenient, but the compass screen surface life-span is shorter; Bolt connecting type provides pretightning force, compass screen surface and beam contact area uniform force due to press strip, and it is embedded that its life-span is better than draw-in groove, but bolt is subject to material corrosion wearing and tearing, and bolt and crossbeam fixedly mount, and are not easy to maintain and replace., compass screen surface reliability is difficult to guarantee, compass screen surface rapid wear.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides the flip flop screen that a kind of compass screen surface percent opening increases progressively, the mode that flip flop screen increases progressively according to percent opening is arranged, and reduces compass screen surface wearing and tearing, solves the deficiencies in the prior art.
Technical scheme: for achieving the above object, the technical solution used in the present invention is: the flip flop screen that a kind of compass screen surface percent opening increases progressively, and it is characterized in that, comprise N section sieve apparatus group, each sieve apparatus group comprises the identical sieve apparatus of M block; The sieve-plate aperture ratio of described sieve apparatus group increases progressively to discharge end direction according to feeding end;
Each block sieve apparatus comprises crossbeam, bracing frame and sieve plate;
Described crossbeam is hollow structure, and two ends are all fixed with limiting plate, and the lower end of limiting plate is fixed on crossbeam, and there is perforate lower end, and this hole shape and aperture are all suitable with the hollow structure of crossbeam; Limiting plate height is greater than beam height; Crossbeam comprises built-in beam and floating beam; Beam top is provided with draw-in groove, and draw-in groove is fitted in beam top, and in crossbeam and limiting plate junction, draw-in groove is arc-shaped, and draw-in groove is fixed on limiting plate along the extension of this circular arc;
Support frame as described above comprises pipe beam and press strip; Press strip and draw-in groove suitable; Pipe beam and press strip are evenly provided with one group of fixing hole respectively, and screw bolt passes sieve plate, pipe beam, press strip, be fixed on sieve plate on draw-in groove by described fixing hole.
Further, described bolt is T-shaped bolt, and end is provided with Rust-inhibiting nut.
Further, described sieve plate is polyurethane sieve plate.
Beneficial effect: the flip flop screen that a kind of compass screen surface percent opening provided by the invention increases progressively, the percent opening of sieve plate has influence significantly to the service life of sieve plate and screening effect, percent opening reduces, increase accordingly the net sectional area of compass screen surface, flip flop screen compass screen surface intensity can be increased, the distortion of flip flop screen compass screen surface during reduction coarsegrain material impact.Percent opening by increase gradually from flip flop screen feeding end to discharge end rule distribution, such feeding end, when bearing coarsegrain material and falling into, can have higher intensity, favourable with opposing material impact; In addition feeding end material is many, reduce the bearing capacity that compass screen surface percent opening can improve compass screen surface, compass screen surface perforate can play certain sieving actoion again compared to blind plate, stage casing and discharge end material reduce gradually, percent opening increases gradually, thin layer screening advantage can be given full play to, ensure flip flop screen screening efficiency.
Round tube beam is close to Polyurethane sieve, when compass screen surface repeatedly flex motion time, its bottom surface and round tube beam are without being subject to shearing force effect, and be conducive to improving compass screen surface fatigue life, T-shaped bolt is connected with crossbeam by the draw-in groove be fixed on crossbeam, and during damage, replacing facilitates.
Accompanying drawing explanation
Fig. 1 is sieve apparatus group combination schematic diagram
Fig. 2 is sieve apparatus schematic diagram
Fig. 3 is bracing frame scheme of installation
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described.
Be illustrated in figure 1 the flip flop screen that a kind of compass screen surface percent opening increases progressively, it is characterized in that, comprise N section sieve apparatus group, each sieve plate 5 device group comprises M block identical sieve plate 5 device; Sieve plate 5 percent opening of described sieve plate 5 device group increases progressively to discharge end direction according to feeding end;
Each block sieve plate 5 device comprises crossbeam, bracing frame and sieve plate 5;
As shown in Figure 2, described crossbeam is hollow structure, and two ends are all fixed with limiting plate, and the lower end of limiting plate is fixed on crossbeam, and there is perforate lower end, and this hole shape and aperture are all suitable with the hollow structure of crossbeam; Limiting plate height is greater than beam height; Crossbeam comprises built-in beam 1 and floating beam 2; Beam top is provided with draw-in groove 3, and draw-in groove 3 is fitted in beam top, and in crossbeam and limiting plate junction, draw-in groove 3 is in arc-shaped, and draw-in groove 3 is fixed on limiting plate along the extension of this circular arc;
Support frame as described above comprises pipe beam 6-1 and press strip 6-2 as shown in Figure 3; Press strip 6-2 and draw-in groove 3 suitable; Pipe beam 6-1 and press strip 6-2 is evenly provided with one group of fixing hole respectively, and sieve plate 5 through sieve plate 5, pipe beam 6-1, press strip 6-2, is fixed on draw-in groove 3 by described fixing hole by bolt 4 successively.
Described bolt 4 is T-shaped bolt 4, and end is provided with Rust-inhibiting nut 7.
Described sieve plate 5 is polyurethane sieve plate 5.
Embodiment:
The fixed form adopting draw-in groove 3 to combine with T-shaped bolt 4 arranged by sieve plate, and described draw-in groove 3 is fixed on flip flop screen built-in beam 11 and floating beam 2, level in the middle part of draw-in groove 3, and both sides bend gradually near side plate place, and described T-shaped bolt 4 inserts in draw-in groove.Polyurethane sieve plate 5 is arranged on flip flop screen built-in beam 1 and floating beam by sieve plate bracing frame 6, and described sieve plate bracing frame 6 is made up of the press strip 6-2 of the passive round tube beam 6-1 below polyurethane sieve plate, compass screen surface top fixed screen deck and Rust-inhibiting nut 7.Described sieve plate bracing frame relies on T-shaped bolt 4 to be connected and fixed with draw-in groove 3.Described T-shaped bolt 4 is through round tube beam 6-1, polyurethane sieve plate 5, press strip 6-2, and outermost end is equipped with Rust-inhibiting nut 7.Described press strip 6-2 is divided into three sections, and profile and draw-in groove 3 match.
Flip flop screen compass screen surface percent opening is by the rule design distribution increased gradually from flip flop screen feeding end to discharge end.Namely feeding end adopts low percent opening compass screen surface, and stage casing compass screen surface percent opening is higher than feeding end compass screen surface percent opening, and discharge end compass screen surface percent opening is higher than stage casing compass screen surface percent opening.
Concrete, compass screen surface bracing frame is spaced on flip flop screen built-in beam 1 and floating beam 2, and polyurethane sieve plate is arranged on bracing frame 6.Sieve plate bracing frame 6 is connected with the draw-in groove 3 be fixed on crossbeam by T-shaped bolt 4.Draw-in groove 3 is divided into 3 sections, middle part is parallel with beam body, two ends upwarp gradually, sieve plate bracing frame 6 is by the pipe beam 6-1 by supporting screening plate, and the press strip 6-2 compressing sieve plate forms, and press strip 6-2 is divided into three sections, profile and draw-in groove 3 match, T-shaped bolt 4T type end inserts draw-in groove, and threaded portion is through round tube beam 6-1, polyurethane sieve plate 5, press strip 6-2, and outermost end is provided with Rust-inhibiting nut 7.
Polylith polyurethane sieve plate forms flip flop screen compass screen surface, and according to actual conditions, whole compass screen surface is divided into percent opening different three sections or more section, and in this example, whole flip flop screen compass screen surface is divided into 3 sections, that is, 3 sections of sieve apparatus groups, often organize M block sieve plate, M also gets 3.Compass screen surface percent opening increases to discharge end gradually by from flip flop screen feeding end, and in this example, each section of ratio is taken as 0.8:1:1.2.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (3)
1. the flip flop screen that increases progressively of compass screen surface percent opening, it is characterized in that, comprise N section sieve apparatus group, each sieve apparatus group comprises the identical sieve apparatus of M block; The sieve-plate aperture ratio of described sieve apparatus group increases progressively to discharge end direction according to feeding end;
Each block sieve apparatus comprises crossbeam, bracing frame and sieve plate;
Described crossbeam is hollow structure, and two ends are all fixed with limiting plate, and the lower end of limiting plate is fixed on crossbeam, and there is perforate lower end, and this hole shape and aperture are all suitable with the hollow structure of crossbeam; Limiting plate height is greater than beam height; Crossbeam comprises built-in beam and floating beam; Beam top is provided with draw-in groove, and draw-in groove is fitted in beam top, and in crossbeam and limiting plate junction, draw-in groove is arc-shaped, and draw-in groove is fixed on limiting plate along the extension of this circular arc;
Support frame as described above comprises pipe beam and press strip; Press strip and draw-in groove suitable; Pipe beam and press strip are evenly provided with one group of fixing hole respectively, and screw bolt passes sieve plate, pipe beam, press strip, be fixed on sieve plate on draw-in groove by described fixing hole.
2. the flip flop screen that increases progressively of a kind of compass screen surface percent opening as claimed in claim, it is characterized in that, described bolt is T-shaped bolt, and end is provided with Rust-inhibiting nut.
3. the flip flop screen that increases progressively of a kind of compass screen surface percent opening as claimed in claim, it is characterized in that, it is characterized in that, described sieve plate is polyurethane sieve plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510891012.2A CN105312231B (en) | 2015-12-07 | 2015-12-07 | A kind of incremental flip flop screen of compass screen surface percent opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510891012.2A CN105312231B (en) | 2015-12-07 | 2015-12-07 | A kind of incremental flip flop screen of compass screen surface percent opening |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105312231A true CN105312231A (en) | 2016-02-10 |
| CN105312231B CN105312231B (en) | 2018-07-10 |
Family
ID=55241128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510891012.2A Expired - Fee Related CN105312231B (en) | 2015-12-07 | 2015-12-07 | A kind of incremental flip flop screen of compass screen surface percent opening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105312231B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107876378A (en) * | 2017-10-30 | 2018-04-06 | 中国矿业大学 | A kind of uniform thickness flip flop screen to occupy little space |
| CN109365271A (en) * | 2018-11-27 | 2019-02-22 | 中国矿业大学(北京) | A kind of rod spring formula flip flop screen |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002219416A (en) * | 2001-01-30 | 2002-08-06 | Nkk Corp | Grizzly bar for vibration screen |
| JP2004154063A (en) * | 2002-11-07 | 2004-06-03 | Terada Seisakusho Co Ltd | Tea manufacturing sorter |
| CN101664738A (en) * | 2008-09-01 | 2010-03-10 | 中国矿业大学 | Centralized driving flip-flow screen |
| CN102485351A (en) * | 2010-12-03 | 2012-06-06 | 河南太行振动机械股份有限公司 | Floating-type sieve plate |
| CN103752498A (en) * | 2014-01-14 | 2014-04-30 | 中国矿业大学 | Distributed driven type rocking sieve |
| CN104624485A (en) * | 2014-12-19 | 2015-05-20 | 中国矿业大学 | Vibrating type flip-flow screen capable of quickly removing large materials |
| EP2926916A1 (en) * | 2014-04-03 | 2015-10-07 | IFE Aufbereitungstechnik Gmbh | Side sealing assembly for a flip-flow screen |
-
2015
- 2015-12-07 CN CN201510891012.2A patent/CN105312231B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002219416A (en) * | 2001-01-30 | 2002-08-06 | Nkk Corp | Grizzly bar for vibration screen |
| JP2004154063A (en) * | 2002-11-07 | 2004-06-03 | Terada Seisakusho Co Ltd | Tea manufacturing sorter |
| CN101664738A (en) * | 2008-09-01 | 2010-03-10 | 中国矿业大学 | Centralized driving flip-flow screen |
| CN102485351A (en) * | 2010-12-03 | 2012-06-06 | 河南太行振动机械股份有限公司 | Floating-type sieve plate |
| CN103752498A (en) * | 2014-01-14 | 2014-04-30 | 中国矿业大学 | Distributed driven type rocking sieve |
| EP2926916A1 (en) * | 2014-04-03 | 2015-10-07 | IFE Aufbereitungstechnik Gmbh | Side sealing assembly for a flip-flow screen |
| CN104624485A (en) * | 2014-12-19 | 2015-05-20 | 中国矿业大学 | Vibrating type flip-flow screen capable of quickly removing large materials |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107876378A (en) * | 2017-10-30 | 2018-04-06 | 中国矿业大学 | A kind of uniform thickness flip flop screen to occupy little space |
| CN109365271A (en) * | 2018-11-27 | 2019-02-22 | 中国矿业大学(北京) | A kind of rod spring formula flip flop screen |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105312231B (en) | 2018-07-10 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180710 |