CN2686742Y - Amplitude degressive oscillating screen - Google Patents
Amplitude degressive oscillating screen Download PDFInfo
- Publication number
- CN2686742Y CN2686742Y CN 200420030661 CN200420030661U CN2686742Y CN 2686742 Y CN2686742 Y CN 2686742Y CN 200420030661 CN200420030661 CN 200420030661 CN 200420030661 U CN200420030661 U CN 200420030661U CN 2686742 Y CN2686742 Y CN 2686742Y
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- Prior art keywords
- amplitude
- screen
- vibrator
- screen box
- oscillating
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Abstract
The utility model discloses an amplitude degressive oscillating screen, belonging to the mechanical field of vibration and screening. The utility model is designed to improve the processing ability and the screening efficiency of the biaxial oscillating screen. Two vibrators of the oscillating screen are respectively arranged at the feeding end and the discharge end of the screen box of the oscillating screen, with the vibrator eccentric block of the feeding end outweighting the vibrator eccentric block of the discharge end. The distance between the centers of the two vibrators is greater than or equal to a quarter of the length of the screen box. The amplitude of the oscillating screen forms an ellipse when the oscillating screen works. The amplitude of the entire screen box decreases from the feeding end to the discharge end. The feeding end is of large amplitude and strong oscillating force, which is favourable for the thorough screening of the accumulated materials, and hence, the processing ability is improved. The discharge end is of decreased amplitude and abated oscillating force, which is favourable for improving the screening efficiency. The utility model is suitable for the design and use of the large-scale and oversize oscillating screen.
Description
Technical field
The utility model relates to the vibration screening machinery field, mainly is the amplitude diminish vibration sieve that can improve the disposal ability and the screening efficiency of vibratory sieve.
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.
The utility model content
The utility model provides a kind of amplitude diminish vibration sieve, can improve the disposal ability and the screening efficiency of vibratory sieve effectively.
The utility model is realized by following measure.Vibratory sieve is made up of 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.
The utility model has the advantages 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 utility model, 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 that discharge end, L1 are that vibrator centre-to-centre spacing, L are screen box length among the figure.
The specific embodiment
An existing accompanying drawings embodiment of the present utility model.Amplitude diminish vibration sieve 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.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 diminish vibration sieve, 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).
2, amplitude diminish vibration sieve according to claim 1 is characterized in that: on the vibrator of vibratory sieve, be provided with the eccentric mass adjusting device.
3, amplitude diminish vibration sieve according to claim 1, it is characterized in that: two vibrator eccentric part of vibratory sieve are identical, eccentric mass equates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420030661 CN2686742Y (en) | 2004-03-05 | 2004-03-05 | Amplitude degressive oscillating screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420030661 CN2686742Y (en) | 2004-03-05 | 2004-03-05 | Amplitude degressive oscillating screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2686742Y true CN2686742Y (en) | 2005-03-23 |
Family
ID=34670435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420030661 Expired - Fee Related CN2686742Y (en) | 2004-03-05 | 2004-03-05 | Amplitude degressive oscillating screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2686742Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102744200A (en) * | 2012-07-04 | 2012-10-24 | 江苏永钢集团有限公司 | Screening device for granulated slag raw material |
| CN103447232A (en) * | 2013-07-24 | 2013-12-18 | 青岛农业大学 | All-wheel-drive non-amplitude vibrating screen mechanism |
| CN103447230A (en) * | 2013-07-24 | 2013-12-18 | 青岛农业大学 | Unequal-amplitude material cleaning sieve |
| CN106799348A (en) * | 2015-11-26 | 2017-06-06 | 池州市方圆矿山机械制造有限公司 | A kind of straight-line oscillation vibratory sieve |
| CN110064583A (en) * | 2019-04-26 | 2019-07-30 | 中国矿业大学(北京) | A kind of Non-Linear Vibration flip flop screen |
| CN114226223A (en) * | 2021-11-02 | 2022-03-25 | 佛山市交通科技有限公司 | Asphalt mixture screening device |
| CN114226043A (en) * | 2021-11-02 | 2022-03-25 | 佛山市交通科技有限公司 | Three-stage crushing system and method for asphalt mixture |
-
2004
- 2004-03-05 CN CN 200420030661 patent/CN2686742Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102744200A (en) * | 2012-07-04 | 2012-10-24 | 江苏永钢集团有限公司 | Screening device for granulated slag raw material |
| CN103447232A (en) * | 2013-07-24 | 2013-12-18 | 青岛农业大学 | All-wheel-drive non-amplitude vibrating screen mechanism |
| CN103447230A (en) * | 2013-07-24 | 2013-12-18 | 青岛农业大学 | Unequal-amplitude material cleaning sieve |
| CN103447230B (en) * | 2013-07-24 | 2015-04-22 | 青岛农业大学 | Unequal-amplitude material cleaning sieve |
| CN106799348A (en) * | 2015-11-26 | 2017-06-06 | 池州市方圆矿山机械制造有限公司 | A kind of straight-line oscillation vibratory sieve |
| CN110064583A (en) * | 2019-04-26 | 2019-07-30 | 中国矿业大学(北京) | A kind of Non-Linear Vibration flip flop screen |
| CN110064583B (en) * | 2019-04-26 | 2020-08-04 | 中国矿业大学(北京) | Nonlinear vibration relaxation sieve |
| CN114226223A (en) * | 2021-11-02 | 2022-03-25 | 佛山市交通科技有限公司 | Asphalt mixture screening device |
| CN114226043A (en) * | 2021-11-02 | 2022-03-25 | 佛山市交通科技有限公司 | Three-stage crushing system and method for asphalt mixture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050323 Termination date: 20100305 |