CN100525934C - Amplitude descending screening method and vibrating screen - Google Patents
Amplitude descending screening method and vibrating screen Download PDFInfo
- Publication number
- CN100525934C CN100525934C CNB2004100213451A CN200410021345A CN100525934C CN 100525934 C CN100525934 C CN 100525934C CN B2004100213451 A CNB2004100213451 A CN B2004100213451A CN 200410021345 A CN200410021345 A CN 200410021345A CN 100525934 C CN100525934 C CN 100525934C
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- vibratory sieve
- vibrator
- vibrators
- screen box
- amplitude
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000012216 screening Methods 0.000 title abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 20
- 230000007423 decrease Effects 0.000 claims description 6
- 230000002153 concerted effect Effects 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 5
- 238000007873 sieving Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 2
- 238000005728 strengthening Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 abstract 4
- 230000002349 favourable effect Effects 0.000 abstract 2
- 230000010355 oscillation Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The present invention relates to an amplitude descending screening method and a vibrating screen, which belongs to the field of vibrating and screening machinery. The present invention is designed in order to improving the processing capacity and the screening efficiency of a double shaft vibrating screen. Two vibrators of the vibrating screen are respectively arranged at the material feeding end and the material discharging end of a screen box of the vibrating screen; the quality of an eccentric block of the vibrator at the material feeding end is larger than that of an eccentric block of the vibrator at the material discharging end. The central distance of the two vibrators is longer than or equal to one quarter the length of the screen box. When the vibrating screen works, the amplitude forms an elliptical shape; the amplitude of the whole screen box is distributed in the descending mode from the material feeding end to the material discharging end. The material feeding end has large amplitude and strong vibration force which are favourable for a deposited material to pass through the screen and improving the processing capacity. The material discharging end has reduced amplitude and weak vibration force which are favourable for improving the screening efficiency. The present invention is particularly suitable for the design and use of a large vibrating screen and an oversize vibrating screen.
Description
Technical field
The present invention relates to the vibration screening machinery field, mainly is successively decrease sieve method and vibratory sieve of the amplitude that can improve the disposal ability of vibratory sieve and screening efficiency.
Background technology
At present, the movement locus of dual-axis vibration sieve is generally linear and ellipse, and this kind vibratory sieve has two vibrators, and the vibration of vibrator is made a concerted effort by the center of gravity of screen box.The mounting distance of two vibrators is nearer, generally is the middle part that is positioned at screen box, or connects by gear, or motor directly connects incorgruous run-in synchronism by shaft coupling.The movement locus at each position of screen box is identical, and the amplitude at each position is also identical with oscillation intensity.Because the material ratio on the vibratory sieve feeding end compass screen surface is more concentrated, the skewness of material on whole compass screen surface is so directly influenced the disposal ability and the screening efficiency of vibratory sieve.In addition because the position of two vibrators is more concentrated, and vibration stress is also more concentrated, also be totally unfavorable to the large scale development of vibratory sieve.
Summary of the invention
The invention provides a kind of amplitude successively decrease sieve method and vibratory sieve, can improve the disposal ability and the screening efficiency of vibratory sieve effectively.
The present invention is achieved by the following measures.The method of its screening is: two vibrators of vibratory sieve under the driving of two motor, rotate with speed with opposite direction respectively; By strengthening the centre-to-centre spacing of two incorgruous run-in synchronism vibrators on the vibratory sieve, the eccentric mass of feeding end vibrator is greater than the eccentric mass of discharge end vibrator, and the movement locus that makes the vibratory sieve screen box is for oval; The vibration of vibrator is made a concerted effort by the center of gravity of vibratory sieve screen box, and long axis of ellipse is perpendicular to the compass screen surface of vibratory sieve, has realized that the form that the amplitude of vibratory sieve tapers off from the feeding end to the discharge end distributes, and material is by passing through compass screen surface by force under the effect of weak vibration force.
Require the vibratory sieve of design according to above method for sieving, form by support, shock-absorbing spring, screen box, screen cloth, motor and vibrator, it is characterized in that: two vibrators of vibratory sieve are separately positioned on the feeding end and the discharge end of vibratory sieve screen box, the eccentric part difference of two vibrators, the eccentric mass of feeding end vibrator is greater than the eccentric mass of discharge end vibrator; The centre-to-centre spacing of two vibrators is more than or equal to 1/4th of screen box length.Making a concerted effort of vibrator by the center of gravity of vibratory sieve screen box.
On the vibrator of vibratory sieve, be provided with the eccentric mass adjusting device.The eccentric mass adjusting device is adjusted the eccentric mass of vibrator by the mode that increases and decreases additional eccentric block.Also the eccentric mass adjusting device can only be set on the vibrator of feeding end.
That two vibrators of vibratory sieve also can eccentric part is identical, eccentric mass equates that this moment, the movement locus of screen box was a straight line, and the movement locus at each position is identical, and amplitude equates.
During vibratory sieve work, two vibrators are respectively under the driving of two motor, with the speed rotation together of opposite direction.Because the eccentric mass difference of two vibrators, the eccentric mass of feeding end vibrator is bigger, so the amplitude of the feeding end of screen box is greater than the amplitude of screen box discharge end.The movement locus of screen box is oval, and long axis of ellipse is perpendicular to the compass screen surface of vibratory sieve.The form that the amplitude of whole screen box tapers off from the feeding end to the discharge end distributes.The length of ellipse short shaft depends on eccentric mass poor of two vibrators.Can by the eccentric mass adjusting device, adjust its eccentric mass according to the requirement of method for sieving, thus the amplitude and the oscillation intensity of increase and decrease and adjustment vibratory sieve.
Advantage of the present invention is that because the amplitude of vibratory sieve feeding end is bigger, so oscillation intensity is also bigger, the speed of material movement and layering is very fast on the compass screen surface, can as soon as possible material be sieved, and has improved the disposal ability of vibratory sieve effectively.Material is during to compass screen surface latter half of because the amplitude of screen box reduces gradually, oscillation intensity relatively a little less than, the translational speed of material is slower, the bed of material is uniform and stable, the screening efficiency height of vibratory sieve.And can be according to the screening needs of different material, suitably adjust eccentric mass poor of two vibrators, satisfy the requirement of material screening.When the eccentric mass of two vibrators equated, this vibratory sieve was exactly the linear vibrating screen of a big span vibration device.The vibrator of vibratory sieve draws back certain distance, and the application point of vibration force makes the force-bearing situation of screen box better near support place of support, is evenly distributed, so this method for sieving and vibratory sieve are particularly suitable for the design and use of large-scale and super-huge vibratory sieve.
Description of drawings
Fig. 1 is a structural representation of the present invention, Fig. 2 is the vertical view of Fig. 1, and 1 is that support, 2 is that shock-absorbing spring, 3-1 are that discharge end place vibrator, 3-2 are that feeding end place vibrator, 4 is that screen box, 5 is that screen cloth, 6 is that motor, 7 is that flexible shaft joint, a are that feeding end, b are discharge end, L among the figure
1For vibrator centre-to-centre spacing, L are screen box length.
The specific embodiment
Existing accompanying drawings one embodiment of the present of invention.Vibratory sieve of the present invention is made up of support 1, shock-absorbing spring 2, screen box 4, screen cloth 5, motor 6 and vibrator 3-1,3-2 etc.The screen box 4 of vibratory sieve is installed on the support 1 by shock-absorbing spring 2, and screen cloth 5 is installed in the screen box 4; A is a feeding end, and b is a discharge end, and two vibrator 3-1 and 3-2 are installed in the discharge end and the feeding end of screen box 4 respectively.The length of screen box 4 is 8.2 meters, and width is 3.8 meters.The eccentric part difference of two vibrators, the eccentric mass of feeding end vibrator 3-2 manys 5kg than the eccentric mass of discharge end vibrator 3-1, and the centre-to-centre spacing of two vibrators is 4.5 meters.The movement locus of screen box is oval, and the amplitude (transverse) of screen box 4 feeding ends is 12mm, and the amplitude of discharge end is 10mm, and middle for the form of successively decreasing uniformly distributes, oval minor axis length is 2mm.
Claims (3)
1, a kind of amplitude method for sieving that successively decreases is characterized in that: two vibrators of vibratory sieve respectively under the driving of two motor, with opposite direction with the speed rotation; By strengthening the centre-to-centre spacing of two incorgruous run-in synchronism vibrators on the vibratory sieve, the eccentric mass of feeding end vibrator is greater than the eccentric mass of discharge end vibrator, and the movement locus that makes the vibratory sieve screen box is for oval; The vibration of vibrator is made a concerted effort by the center of gravity of vibratory sieve screen box, and long axis of ellipse is perpendicular to the compass screen surface of vibratory sieve, has realized that the form that the amplitude of vibratory sieve tapers off from the feeding end to the discharge end distributes, and material is by passing through compass screen surface by force under the effect of weak vibration force.
2, a kind of vibratory sieve of realizing the described method of claim 1, form by support (1), shock-absorbing spring (2), screen box (4), screen cloth (5), motor (6) and vibrator (3-1), (3-2), it is characterized in that: two vibrators (3-1) of vibratory sieve, (3-2) are separately positioned on the discharge end and the feeding end of vibratory sieve screen box (4), the eccentric part difference of two vibrators, the eccentric mass of feeding end vibrator (3-2) is greater than the eccentric mass of discharge end vibrator (3-1); The centre-to-centre spacing of two vibrators is more than or equal to 1/4th of screen box length; The vibration of vibrator is made a concerted effort by the center of gravity of vibratory sieve screen box (4).
3, vibratory sieve according to claim 2 is characterized in that: on the vibrator of vibratory sieve, be provided with the eccentric mass adjusting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100213451A CN100525934C (en) | 2004-03-05 | 2004-03-05 | Amplitude descending screening method and vibrating screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100213451A CN100525934C (en) | 2004-03-05 | 2004-03-05 | Amplitude descending screening method and vibrating screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1663695A CN1663695A (en) | 2005-09-07 |
| CN100525934C true CN100525934C (en) | 2009-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100213451A Expired - Lifetime CN100525934C (en) | 2004-03-05 | 2004-03-05 | Amplitude descending screening method and vibrating screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100525934C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102310041A (en) * | 2011-04-23 | 2012-01-11 | 鞍山重型矿山机器股份有限公司 | Vibrating type roller screen |
| CN102310047A (en) * | 2011-04-28 | 2012-01-11 | 鞍山重型矿山机器股份有限公司 | Vibration sieve arranging vibrator on vibration reduction support device |
| CN102319666A (en) * | 2011-06-18 | 2012-01-18 | 鞍山重型矿山机器股份有限公司 | Self-synchronizing linear vibration sieve with forced synchronization function |
| CN103286065B (en) * | 2013-06-18 | 2015-12-09 | 鞍山重型矿山机器股份有限公司 | Large scatter radius vibratory sieve |
| CN103447230B (en) * | 2013-07-24 | 2015-04-22 | 青岛农业大学 | Unequal-amplitude material cleaning sieve |
| CN103447232B (en) * | 2013-07-24 | 2015-04-22 | 青岛农业大学 | All-wheel-drive non-amplitude vibrating screen mechanism |
| CN104084372B (en) * | 2014-07-03 | 2016-01-27 | 江苏大学 | A kind of amplitude variable cleaning plant based on planar linkage mechanism |
| CN106171309A (en) * | 2016-08-18 | 2016-12-07 | 张铁刚 | Sheller vibrating screen load-bearing damper mechanism |
| CN107470136A (en) * | 2017-09-27 | 2017-12-15 | 中国矿业大学 | One kind becomes amplitude equal thick screen |
| CN108855854A (en) * | 2018-07-27 | 2018-11-23 | 四川皇龙智能破碎技术股份有限公司 | A kind of big compass screen surface screening spreader |
| CN117427884B (en) * | 2023-12-20 | 2024-04-09 | 天津美腾科技股份有限公司 | Sorting method and ladder flow sorting machine |
-
2004
- 2004-03-05 CN CNB2004100213451A patent/CN100525934C/en not_active Expired - Lifetime
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| Publication number | Publication date |
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| CN1663695A (en) | 2005-09-07 |
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Owner name: ANSHAN HEAVY-DUTY MINING MACHINERY CO. . LTD. Free format text: FORMER OWNER: YANG YONGZHU Effective date: 20080912 |
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Effective date of registration: 20080912 Address after: Victory Road, Liaoning mountain city of Anshan Province, No. 900 Anshan heavy mining machinery Limited by Share Ltd post encoding: 114042 Applicant after: ANSHAN HEAVY DUTY MINING MACHINERY Co.,Ltd. Address before: Heavy duty mining machinery factory on the west side of Lingshan Saddle Road, Qianshan District, Liaoning, Anshan Province, China: 114042 Applicant before: Yang Yongzhu |
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Effective date of registration: 20210629 Address after: 114051 Liaoning city of Anshan province high tech Zone Anqian Road No. 294 Patentee after: Anshan Anzhong Mining Machinery Co.,Ltd. Address before: Anshan City, Liaoning Province victory road 114042 Lishan District No. 900 Anshan heavy mining machinery Limited by Share Ltd Patentee before: ANSHAN HEAVY DUTY MINING MACHINERY Co.,Ltd. |
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