Novel vibrating screen based on multi-motor frequency conversion excitation

A vibrating screen, multi-motor technology, applied in the direction of filter screen, solid separation, grille, etc., can solve the problems of non-adjustable excitation frequency, environmental protection, mud splashing, etc., to achieve energy-saving service life, prolong service life, and low cost Effect

Inactive Publication Date: 2005-09-21
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this type of screen can obtain greater excitation force than the self-synchronous vibrating screen with double motor excitation currently used, the force on the screen box is relatively reasonable, and the strength and life can be improved to a certain extent, but there are still certain problems. Limitations, such as non-adjustable excitation frequency, mud splashing affects environmental protection, etc.

Method used

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  • Novel vibrating screen based on multi-motor frequency conversion excitation
  • Novel vibrating screen based on multi-motor frequency conversion excitation
  • Novel vibrating screen based on multi-motor frequency conversion excitation

Examples

Experimental program
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Effect test

Embodiment 1

[0022] See attached figure 1 , attached figure 2 . The new vibrating screen based on the multi-motor excitation mode is mainly composed of a screen box 1, a vibrator 2 and a base 3. The screen box 1 is installed on the base by a vibration isolation spring 4, and the vibrator uses three elongated vibration motors A , B, and C are installed at appropriate positions on the top of the screen box 1. Each vibration motor can have different eccentric masses according to actual needs. Vibrating motors B and C rotate in the same direction, and the resultant force of the generated vibrating force and the vibrating force generated by vibrating motor A are combined to form the vibrating force of the vibrating screen. The rotation direction of the vibration motor A is opposite to that of the vibration motors B and C.

[0023] The vibrating screen installed in this way can generate greater excitation force without increasing the excitation frequency, making the screening and conveying ...

Embodiment 2

[0025] See attached image 3 , attached Figure 4 . The new vibrating screen based on the multi-motor excitation mode is mainly composed of a screen box 1, a vibrator 2 and a base 3. The screen box 1 is installed on the base by a vibration isolation spring 4, and the vibrator uses three short-shaped vibration motors A , B, and C are installed in the middle of the screen box 1 (between the upper screen 6 and the lower screen 5 ), and the protective cover 7 of the vibrator is used to prevent the filtrate of the upper screen 6 from polluting the vibrator. The excitation motor can have different eccentric masses according to actual needs. Vibrating motors B and C rotate in the same direction, and the resultant force of the generated vibrating force and the vibrating force generated by vibrating motor A are combined to form the vibrating force of the vibrating screen. The rotation direction of the vibration motor A is opposite to that of the vibration motors B and C.

[0026] T...

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Abstract

The invention relates to a new jigging screen based on the multi-motor frequency-changing exciting, which primarily comprises screen box, exciting apparatus and chassis, wherein the screen box set on the chassis through the spacer spring, characterized in that the exciting apparatus uses three or more rectangle or short exciting motors setting on the upper, middle or lower of the screen box, each exciting motor has different eccentric center qualities according to the actual need, the exciting motors can synchronous operate stably. The invention uses the frequency-changing apparatus to adjust the exciting rotary speed, which can meet the requirements of different behaviors. When the exciting motors operating stably, it can keep only one motor working and shut the rest, and the jigging screen can also move in a needed track.

Description

technical field [0001] The invention relates to a vibrating screen for material screening and conveying, including vibrating screens used in petroleum and natural gas drilling, mineral processing, coal preparation, chemical industry, medicine, food, non-ferrous metals, transmission and other industries. Background technique [0002] At present, the vibrating screen used at home and abroad is usually composed of a screen box, a vibrator and a base. The two eccentric shafts included in the vibrator adopt forced synchronous transmission such as gears and synchronous belts, or adopt self-synchronous transmission of two excitation motors to realize excitation. Since the excitation force generated by the two eccentric shafts is not enough to meet the requirements of the vibration screen with a large screen surface area, a multi-axis self-synchronized translational elliptical vibration screen is proposed in patent 00259925.2, which can use three and There are more than three eccen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B07B1/28B07B1/42
Inventor 张明洪刘洪斌徐倩侯勇俊
Owner SOUTHWEST PETROLEUM UNIV
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