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CN-117427882-B - Anti-resonance vibrating screen

CN117427882BCN 117427882 BCN117427882 BCN 117427882BCN-117427882-B

Abstract

The invention relates to the technical field of screening equipment, in particular to an anti-resonance vibrating screen, which comprises an excitation body, wherein the top of the excitation body is connected with one side of the elastic body, the other side of the elastic body is connected with a screen box, the elastic body comprises a plurality of main vibrating springs, the main vibrating springs are of cylindrical structures, the axial directions of the main vibrating springs are parallel to the screen surface of the screen box, one side on the outer peripheral surface of the main vibrating springs is connected with the excitation body, the other side on the outer peripheral surface of the main vibrating springs is connected with the screen box, and the excitation body and the screen box are oppositely arranged relative to the main vibrating springs. The vibrating table has the beneficial effects that when the vibration exciter vibrates to enable the vibrating table to vibrate, due to the limitation of the structural shape of the main vibrating spring, the main vibrating spring can only elastically deform along the direction vertical to the axial direction of the main vibrating spring so as to transfer the vibration of the vibrating table to the screen box, the torsion in the left-right direction on the main vibrating spring is greatly reduced or even eliminated, and finally the screen box can only vibrate along the direction vertical to the screen surface without arranging a limiter.

Inventors

  • SUN JUNYONG
  • YANG SHUNLI
  • LIU QINGBAO
  • XU ZHENLONG

Assignees

  • 济南中燃科技发展有限公司

Dates

Publication Date
20260512
Application Date
20231212

Claims (5)

  1. 1. The utility model provides an anti-resonance vibrating screen, its includes vibration excitation body (1), and the top of vibration excitation body (1) is connected with one side of elastomer, and the opposite side of elastomer is connected with sieve case (3), its characterized in that: The elastic body comprises a plurality of main vibrating springs (2), the main vibrating springs (2) are of cylindrical structures, the axial direction of the main vibrating springs (2) is parallel to the screen surface of the screen box (3), one side of the outer peripheral surface of each main vibrating spring (2) is connected with the vibration exciting body (1), the other side of the outer peripheral surface of each main vibrating spring (2) is connected with the screen box (3), and the vibration exciting bodies (1) and the screen box (3) are oppositely arranged relative to the main vibrating springs (2); The output piece of the vibration exciter (1) is connected with a vibrating table (11), the elastic body is connected with the vibration exciter (1) through the vibrating table (11), and a plurality of main vibrating springs (2) are connected to the table top of the vibrating table (11); The bottom of the screen box (3) is provided with a plurality of cross arms (31), the plurality of main vibrating springs (2) are divided into a plurality of groups, and each group of main vibrating springs (2) is correspondingly connected with one cross arm (31); each group of main vibrating springs (2) is divided into a transverse main vibrating spring (21) and a longitudinal main vibrating spring (22), and the axial directions of the transverse main vibrating spring (21) and the longitudinal main vibrating spring (22) are vertically arranged; the transverse main vibration springs (21) and the longitudinal main vibration springs (22) are arranged in a staggered mode.
  2. 2. An antiresonant vibrating screen according to claim 1, characterized in that the outer circumferential surface of the main vibrating spring (2) from the direction of the exciting body (1) to the direction of the screen box (3) is arc-shaped.
  3. 3. An antiresonant vibrating screen according to claim 2, characterized in that the cross section of the main vibrating spring (2) is circular, elliptical or oblong.
  4. 4. An antiresonance shaker as claimed in claim 1, characterized in that the screen box (3) is inclined with one end higher and one end lower.
  5. 5. An antiresonance shaker as claimed in claim 1, characterized in that the main shaking springs (2) are rubber metal compound springs or resin-based compound springs.

Description

Anti-resonance vibrating screen Technical Field The invention relates to the technical field of screening equipment, in particular to an anti-resonance vibrating screen. Background In the metallurgy, mining and coal-dressing industries, a screening process is an indispensable important link, a vibrating screen is one of common screening equipment, the types of traditional vibrating screens are various, a coal classifying vibrating screen, an ore classifying vibrating screen, a cold ore screen, a hot ore screen and the like are classified according to purposes, a probability screen, an equal-thickness screen, a probability equal-thickness screen and the like are classified according to screening principles, elastic connecting rod type, electromagnetic type, inertial type, pneumatic and hydraulic modes and the like are classified according to driving principles, and the vibrating screen can also be classified according to dynamic characteristics, such as the position of a working point in a frequency response curve, a far super resonant screen, a low-critical near resonant screen and an anti-resonant screen, the vibrating screen is classified according to whether a vibrating system is linear or nonlinear, a linear vibrating screen and a nonlinear vibrating screen are classified according to the motion trail of a working part of a screen machine, and the vibrating screen can also be classified according to linear motion, a circular motion vibrating screen, an elliptical motion vibrating screen and the like. The screen box of the anti-resonance vibrating screen is an upper plastid, the vibration exciter is a lower plastid, the upper plastid works according to the required vibration amplitude of the screen machine in an anti-resonance state, and the lower plastid is almost motionless, so that a better vibration isolation effect is easy to obtain. The upper mass of the anti-resonance vibrating screen is not provided with a vibration exciter, the vibration-taking mass is small, the height of the screen box can be reduced, and the mass required by reinforcing the vibration exciter is omitted, so that the vibration-taking mass can be further reduced, the total vibration-taking mass can be reduced by 20% -30%, the vibration-taking mass is reduced, the vibration-taking force can be reduced accordingly, the motor power is reduced, and the energy conservation is facilitated. The lower mass body hardly vibrates, the requirements on rigidity and strength are easily ensured during design, the vibration exciter can be basically designed according to static load, and the noise of the whole machine can be obviously reduced. The existing anti-resonance vibrating screen is characterized in that a spiral spring is used for transmitting vibration from a vibration exciting body to a screen box, torsion and force perpendicular to a screen surface exist on the spiral spring during vibration, and the torsion on the spiral spring can cause deflection of the screen box during vibration, so that a limiter is usually arranged in the prior art, one end of the limiter is fixedly connected with the screen box, the other end of the limiter is fixedly connected with the vibration exciting body, and relative movement of the screen box and the vibration exciting body is restrained, so that the screen box and the vibration exciting body only produce relative movement in the direction perpendicular to the screen surface. However, this has the disadvantage that, firstly, the torque of the coil spring is limited only by the stopper and is not reduced, and, secondly, the design cost, the manufacturing cost and the arrangement space of the stopper are increased. Disclosure of Invention The invention provides an anti-resonance vibrating screen, which aims to solve the technical problems that in the prior art, torsion exists on a spiral spring in the anti-resonance vibrating screen, so that effective vibrating force is small and a limiter is required to be additionally arranged. In order to achieve the above purpose, the invention adopts the following technical scheme: The utility model provides an anti-resonance vibrating screen, it includes the vibration excitation body, the top of vibration excitation body is connected with one side of elastomer, the opposite side of elastomer is connected with the sieve case, wherein, the elastomer includes a plurality of main springs that shake, main spring that shake is tubular structure, the axial direction of main spring that shakes is parallel arrangement with the sieve face of sieve case, one side on the outer peripheral face of main spring that shakes is connected with the vibration excitation body, the opposite side on the outer peripheral face of main spring that shakes is connected with the sieve case, vibration excitation body and sieve case are relative to main spring that shakes setting oppositely. By adopting the above structural scheme, when the vibration body vibrates to enable the vibrating table t