CN1308093C - Double super stable energy saving screen - Google Patents
Double super stable energy saving screen Download PDFInfo
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- CN1308093C CN1308093C CNB2004100939764A CN200410093976A CN1308093C CN 1308093 C CN1308093 C CN 1308093C CN B2004100939764 A CNB2004100939764 A CN B2004100939764A CN 200410093976 A CN200410093976 A CN 200410093976A CN 1308093 C CN1308093 C CN 1308093C
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- sieve nest
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Abstract
The present invention provides a vibrating screen with double element body, super stability and energy saving, which is used for screening materials. The vibrating screen is mainly composed of an upper screen body, a lower screen body, a rubber spring, a guiding plate spring, a main vibrating spring, a driving motor, an elastic crank link mechanism, a basic beam and other parts, wherein a spring assembly is arranged between the upper screen body and the lower screen body; the two screen bodies are driven by the driving motor through an elastic crank link. Tn the present invention, a set of driving systems are used for driving the upper screen body and the lower screen body to simultaneously and reversely vibrate, thereby reducing the dynamical reaction which is transferred to the basic beam by the vibrating screen. The working frequency is designed and set in the second-stage resonance region of the vibrating screen with double elemental bodies, thereby greatly reducing the energy consumption. A hard composite nonlinear rubber main vibrating spring is used, so an amplitude-frequency response curve in the second resonance region of a vibration system is obviously tilted rightward; a wide and gradual vibration area is formed in front of a second-stage resonance point, thereby achieving the aim of strong interference rejection. The present invention, as a product, can be widely used for the application situations in which materials are screened in three stages, etc.
Description
Technical field
The invention belongs to vibrating machine, be specifically related to a kind of energy-saving vibration sieve technology.
Technical background
The vibratory sieve of current application, the overwhelming majority belongs to off-resonance machinery, and promptly the operating point is positioned at after the resonance region of system, and is far longer than resonant frequency, thereby belongs to off-resonance forced vibration state.Want the operating efficiency that reaches certain, need the bigger energy of input system.As twin shaft motor synchronizing elemental body vibratory sieve, in order to reach certain amplitude (thereby having certain oscillation intensity), need to increase eccentric mass and eccentric throw, eccentric massblock itself will expend huge energy, thereby influences the effective power of vibratory sieve.In addition,, need sometimes material is carried out three grades of separation, can realize by two elemental body vibratory sieves or a double-mass vibrating sieve according to requirement of engineering.Use a double-mass vibrating sieve can save working space, because two sieve nests are done reversal of vibrations under one group of motor-driven, so can significantly reduce energy consumption.Thereby in the occasion that need carry out three grades of separation to material, the double-mass vibrating sieve is rational selection.And the minority double-mass vibrating of using now sieve adopts the piecewise linearity spring as main vibrating, because the influence of factors such as installation, make the gap of piecewise linearity spring be difficult to adjust to optimum state, the rigid nonlinear characteristic of this main vibrating is difficult to control and reaches the mild purpose of resonance region amplitude frequency curve before the resonance point, so duty is not very stable, in case system is interfered, as factors such as the variation of the variation of quality of material, spring parameter, variations in temperature, make deviation resonance district, operating point easily, thereby can't reach energy-conservation and purpose stable working.Therefore how the good non-linear main vibration spring of design performance makes the mild transition of system's second rank resonance region, and operating frequency drops within the mild scope of broad, make vibratory sieve can be steadily, energy conservation, be problem to be solved by this invention.
Summary of the invention
The object of the present invention is to provide a kind of two plastid stabilizing energy-saving vibratory sieves that are used for material screening.
Introduce know-why of the present invention below in conjunction with Fig. 1 and Fig. 2.Two plastid stabilizing energy-saving vibratory sieves mainly have: go up sieve nest 1, following sieve nest 2, India-rubber spring 3, go up sieve nest bearing 4, foundation beam 5, guiding leaf spring 6, main vibration spring 7, drive motors 8 and elasticity toggle 9 (as Fig. 1).Be provided with main vibration spring 7 between last sieve nest 1 and following sieve nest 2, main vibration spring 7 is rigid composite non-linear spring.Adopt the stronger non-linear compound main vibration spring of nonlinear degree, its characteristic is rigid non-linear, and mild workspace can be provided, thereby realizes the overstable energy-saving run of vibratory sieve.Last sieve nest 1 and following sieve nest 2 are driven by elasticity crank connecting link 9 by drive motors 8, and upper and lower sieve nest supports by rubber spring 3, guiding leaf spring 6 guiding.The guiding leaf spring adopts composite to make.The rotating speed of design driven motor 8 is that the operating frequency of energy-saving screen is positioned at the second rank resonance point mild resonance region before.The structure of non-linear compound main vibration spring 7 as shown in Figure 2, in fact there are two main vibration springs 7 to be installed on main vibrating lower carriage 11 inside, the upper surface of one of them main vibrating 7 and main vibrating lower carriage 11 tops are fixed, the bottom of the lower surface of another main vibrating 7 and main vibrating lower carriage 11 is fixed, also fit between two main vibratings 7 and contact in the lower surface of main vibrating upper bracket 10, main vibrating upper bracket 10 is fixed with last sieve nest 1, and lower carriage 11 is fixed with following sieve nest 2.Guiding leaf spring 6 is also fixed with last sieve nest 1, following sieve nest 2 respectively.
This system is the double freedom non-linear vibrating system, under the driving of motor 8 and elasticity crank-bar linkage 9, last sieve nest 1 is done rightabout translation (as Fig. 1) with following sieve nest 2 along the direction of main vibrating 7, and the non-linear rigidity of main vibrating 7 is rigid characteristic, so its resonance curve as shown in Figure 3.Its first rank resonance shows as linear resonance, and the resonance of second rank shows as rigid nonlinear resonance, and promptly formant is offset to the right.Owing to adopt the stronger composite non-linear spring 7 of nonlinear degree, the non-linear nature of complex spring 7 is except coming from rubber itself, come from tower metal coil spring wherein to a greater extent, thereby make the obviously skew to the right of the second rank formant that replants energy-saving screen, thereby mild, a roomy amplitude-frequency scope appearred before this resonance point.By the spring rate of designing and calculating system, the operating point of vibratory sieve is positioned within this mild zone, thereby the amplitude fluctuation of energy-saving screen can be very not big when being subjected to external disturbance in system, still can keep stable operation.Should still belong to resonance region in the zone simultaneously, therefore under the condition of the less energy of input, sieve nest can obtain bigger amplitude, reaches purpose of energy saving.Simultaneously, two plastid energy-saving screens drive upper and lower two sieve nests by a cover electric system and do reversal of vibrations, compare with the elemental body vibratory sieve, have reduced the additional dynamical reaction that passes on the basis.Carry out the occasion that three stage materials separate at needs, than using two elemental body vibratory sieves to improve screening efficiency and saved a large amount of driving energy.
Beneficial effect of the present invention and advantage are: the present invention utilizes the second order primary resonance principle of rigid non-linear vibrating system, adopt a kind of novel composite non-linear master vibrating, make the operating point of vibratory sieve be positioned at the second rank resonance point mild resonance region before, thereby realize the overstable energy-saving run effect of vibratory sieve.The present invention can be used for material screening and career fields such as conveying, workpiece cleaning as product.
Description of drawings
Accompanying drawing 1 is the structural representation of two plastid stable energy-saving screens.
Accompanying drawing 2 is the structural representation of non-linear compound main vibrating assembly.
Accompanying drawing 3 is two plastid stable energy-saving screen resonance curves.
Accompanying drawing 4 is the resonance curve of embodiment actual measurement.
Wherein: go up sieve nest-1; Following sieve nest-2; India-rubber spring-3; Last sieve nest bearing-4; Foundation beam-5; Guiding leaf spring-6; Main vibration spring-7; Drive motors-8; Elasticity toggle-9; Main vibration spring upper bracket-10; Main vibration spring lower carriage-11.
The specific embodiment
By the following examples and in conjunction with the accompanying drawings principle of the present invention and device are described further.Implementation process is undertaken by a double-mass vibrating sieve model, and structure as shown in Figure 1.In the present embodiment, design parameter is: operating frequency n=750rpm, amplitude X=13mm; Structural parameters are: the mass M that goes up sieve nest 1
1=71.9kg; The mass M of following sieve nest 2
2=71.1kg; The rigidity k of rubber spring 3
3=22.13kN/m; The rigidity k of guiding leaf spring 6
6=1.000kN/m; The dynamic stiffness k of main vibration spring 7
7=49.41kN/m; Elasticity toggle 9 medi-spring rigidity k
9=141.2kN/m; Power of motor N=300W, motor speed n
0=1875rpm, driving mechanism gearratio are 2.5.
Starter motor from low speed to 420rpm, treat the stable operation of model sieve after, the amplitude of measuring sieve nest 1 also writes down this value; Continue raising speed to a certain stabilized (steady-state) speed, measure and write down the amplitude of sieve nest 1; So step can obtain the resonance curve of model sieve to 850rpm.
According to the resonance curve of present embodiment actual measurement as shown in Figure 4.As seen the operating frequency of present embodiment design is positioned at resonance point mild resonance region before, and the domain of walker of operating frequency can reach ± 22rpm, stable working state.Through measuring and calculating, reach the common vibratory sieve of same operating efficiency, drive motors power will reach more than the 1500W at least, and the power of this energy-saving screen is 20.00% of common vibratory sieve driving power.As seen energy-saving effect is good.
Claims (2)
1. two plastid stable energy-saving screens, has last sieve nest (1), following sieve nest (2), India-rubber spring (3), last sieve nest bearing (4), foundation beam (5), guiding leaf spring (6), main vibration spring (7), drive motors (8) and elasticity toggle (9), it is characterized in that being provided with rigid composite non-linear main vibration spring (7) between sieve nest (1) and the following sieve nest (2), on, following sieve nest (1,2) drive by elasticity crank connecting link (9) by drive motors (8), on, following sieve nest (1,2) support by rubber spring (3), guiding leaf spring (6) guiding, the rotating speed of design motor (8) are that the operating frequency of energy-saving screen is positioned at the energy-saving screen second rank resonance point mild resonance region before.
2. according to described pair of plastid stable energy-saving screen of claim 1, it is characterized in that described two main vibration springs (7) are installed on main vibrating lower carriage (11) inside, the upper surface of one of them main vibrating (7) and main vibrating lower carriage (11) top are fixed, the bottom of the lower surface of another main vibrating (7) and main vibrating lower carriage (11) is fixed, the lower surface of main vibrating upper bracket (10) is positioned between described two main vibratings (7) and the contact of fitting, described main vibrating upper bracket (10) is fixed with the described sieve nest (1) of going up, described lower carriage (11) is fixed with described sieve nest (2) down, described guiding leaf spring (6) respectively with described on, following sieve nest (1,2) fixing, described guiding leaf spring (6) adopts composite to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100939764A CN1308093C (en) | 2004-12-20 | 2004-12-20 | Double super stable energy saving screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100939764A CN1308093C (en) | 2004-12-20 | 2004-12-20 | Double super stable energy saving screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1623684A CN1623684A (en) | 2005-06-08 |
| CN1308093C true CN1308093C (en) | 2007-04-04 |
Family
ID=34766433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100939764A Expired - Fee Related CN1308093C (en) | 2004-12-20 | 2004-12-20 | Double super stable energy saving screen |
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| Country | Link |
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| CN (1) | CN1308093C (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100352564C (en) * | 2005-09-15 | 2007-12-05 | 上海交通大学 | Adjustable seed gravity screening machine on-line |
| CN101357364B (en) * | 2008-07-25 | 2012-08-01 | 东北大学 | Anti-resonance vibrating sifter |
| CN101693237B (en) * | 2009-09-28 | 2012-05-09 | 西南石油大学 | Double-mass self-synchronization elliptical vibrating screen based on motion synthesis |
| CN103316834A (en) * | 2013-05-23 | 2013-09-25 | 新乡市高服筛分机械有限公司 | Screening machine with two screening boxes |
| US9737911B2 (en) * | 2013-05-24 | 2017-08-22 | Basf Se | Method for operating machines having moving parts and arranged jointly on a support |
| CN103357571B (en) * | 2013-07-22 | 2015-06-03 | 西安船舶工程研究院有限公司 | Vibration sieve |
| CN103990598B (en) * | 2014-06-16 | 2015-12-30 | 鞍山市万瑞矿山设备制造有限公司 | Bi-motor starts link-type resonance screens |
| CN104226587B (en) * | 2014-10-13 | 2017-08-04 | 中煤科工集团唐山研究院有限公司 | The incorgruous vibration separation screen of double mass |
| CN105013700A (en) * | 2015-08-14 | 2015-11-04 | 海安县联源机械制造有限公司 | Resonant-type two-channel vibrating screen |
| CN106513309B (en) * | 2016-11-18 | 2018-12-25 | 苏州优霹耐磨复合材料有限公司 | The control method of Near resonance oscillating formula vibrating sieving machine |
| CN109649936B (en) * | 2018-12-20 | 2020-08-21 | 西南科技大学 | Metallurgical waste residue treatment and recovery equipment |
| CN109649930B (en) * | 2018-12-20 | 2020-08-21 | 西南科技大学 | Metallurgical waste residue screening machine |
| CN112604954B (en) * | 2020-11-27 | 2021-10-29 | 东北大学 | Double-mass four-machine frequency-doubling self-synchronous driving vibrator and parameter determination method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB375934A (en) * | 1930-05-30 | 1932-07-07 | Krupp Fried Grusonwerk Ag | Improvements in or relating to oscillating sieves |
| GB1282254A (en) * | 1970-01-19 | 1972-07-19 | Ibag Vertirieb G M B H | Vibrating device such as a vibrating screen or vibrating conveyor |
| DE2333403A1 (en) * | 1973-06-30 | 1975-01-16 | Hein Lehmann Ag | Handling deck for two-system minerals screens - deck parallel to screens on springs angled to control deck movement |
| JPH01123677A (en) * | 1987-11-06 | 1989-05-16 | Kobe Steel Ltd | Vibration type screen machine |
| JPH07328546A (en) * | 1994-06-07 | 1995-12-19 | Aisin Sanki Kk | Size sorting machine |
-
2004
- 2004-12-20 CN CNB2004100939764A patent/CN1308093C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB375934A (en) * | 1930-05-30 | 1932-07-07 | Krupp Fried Grusonwerk Ag | Improvements in or relating to oscillating sieves |
| GB1282254A (en) * | 1970-01-19 | 1972-07-19 | Ibag Vertirieb G M B H | Vibrating device such as a vibrating screen or vibrating conveyor |
| DE2333403A1 (en) * | 1973-06-30 | 1975-01-16 | Hein Lehmann Ag | Handling deck for two-system minerals screens - deck parallel to screens on springs angled to control deck movement |
| JPH01123677A (en) * | 1987-11-06 | 1989-05-16 | Kobe Steel Ltd | Vibration type screen machine |
| JPH07328546A (en) * | 1994-06-07 | 1995-12-19 | Aisin Sanki Kk | Size sorting machine |
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| Publication number | Publication date |
|---|---|
| CN1623684A (en) | 2005-06-08 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TIANJIN UNIVERSITY; TIANZHUANG MINE-SELECTING FAC Free format text: FORMER OWNER: TIANJIN UNIVERSITY Effective date: 20080125 |
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Effective date of registration: 20080125 Address after: Nankai District Wei Jin Road, Tianjin City No. 92 zip code: 300072 Co-patentee after: Pingdingshan Tian'an Coal Industry Co., Ltd. Tianzhuang washery Patentee after: Tianjin University Address before: Nankai District Wei Jin Road, Tianjin City No. 92 zip code: 300072 Patentee before: Tianjin University |
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Granted publication date: 20070404 Termination date: 20111220 |