CN86209095U

CN86209095U - Automatically discharging residue sieve shaker with adjustable frequency and amplitude

Info

Publication number: CN86209095U
Application number: CN 86209095
Authority: CN
Inventors: 曾化
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-11-07
Filing date: 1987-11-07
Publication date: 1987-12-09

Abstract

The utility model relates to an automatically discharging residue sieve shaker with adjustable frequency and amplitude, belonging to a sieving device. In the utility model, a pulse power source whose frequency and voltage are continuously adjustable is used to act upon electromagnets which are regularly arranged on a sieve frame to generate a rotary electromagnetic force to drive the sieve frame to oscillate; therefore, the action of sieve passing is generated, and the residue sieved is discharged automatically. The utility model can be used for dry type or wet type sieving; the oscillation frequency and the oscillation amplitude are adjustable; the durability is high. The utility model can be used for an oscillation finishing machine, an oscillation polishing machine and other oscillation machinery, by properly changing the oscillating body.

Description

Automatically discharging residue sieve shaker with adjustable frequency and amplitude

The utility model is the electromagnetic type vibratory sieve that residue on sieve can be regulated and can be discharged automatically to a kind of vibration frequency and Oscillation Amplitude continuously.

Existing vibratory sieve has moto-vibro screen and hummer screen two big classes.Moto-vibro screen is because the characteristic of mechanical mechanism limits, and vibration frequency and Oscillation Amplitude are difficult to continuous adjusting, and vibration frequency is not high yet, and the durability of vibratory sieve is low.Existing hummer screen is not owing to carry out effectively directly control to the vibration regularity of vibration source, thereby vibration frequency is difficult to regulate, and can not form effective automatic discharge function.

The purpose of this utility model is exactly the above-mentioned shortcoming that overcomes existing vibratory sieve, makes the shaker vibration wide frequency range, and frequency and amplitude can be regulated and the energy automatic discharge continuously, the durability height.

The technical solution adopted in the utility model is: screen frame (unit) adopts rotating electromagnetic power to drive.This rotating electromagnetic power is to act on by the utilization pulse power on a plurality of electromagnet to the regular distribution of screen frame (unit) electromagnet to be taken turns to operate to produce.The voltage of this pulse power and the height of frequency all are adjustable.The size and the frequency of the rotating electromagnetic power that electromagnet produces are controlled by voltage, frequency and the waveform of the pulse power.Thereby the rotating electromagnetic power that electromagnet produces makes screen frame (unit) do swing vibration and produces effect of sieving and automatic discharge function.

The pulse power is by rectification circuit, and oscillating circuit can preset sequential circuit, buffer circuit, and drive circuit and display circuit are formed.Rectification circuit becomes the adjustable direct current of voltage swing with controllable silicon with AC power.Oscillating circuit provides the pulse signal of frequency adjustable.Sequential circuit is made up of d type flip flop, the waveform pulse that output has certain rule.Buffer circuit is made up of homophase or rp-drive, is used for signal source and power circuit are separated.Drive circuit is formed with VMOS FET or other high power semiconduction tube, is used for DM.Display circuit is used for showing the vibration frequency of vibratory sieve.

The enforcement of technique scheme of the present utility model mainly contains dual mode.First kind is the main motion along continuous straight runs motion of screen frame (unit).The second way is that the main motion of screen frame (unit) is vertically moved.The utility model will be further described below in conjunction with example.

Description of drawings:

(2) (8) (13)-screen frame (unit) (5) (9) (16)-electromagnet

(10)-Equivalent Elasticity body (6) (11) (17)-support

(1) (12)-magnetic conductor (3) (14)-elastic supporter

(4) (15)-screen cloth (7) (18)-pulse power

Figure 1 shows that the example of screen frame (unit) main motion along continuous straight runs vibration, the process of screen frame (unit) main motion is seen Fig. 2 to Fig. 5.

When the pulse power makes electromagnet by last, the right side, down, when the order clockwise direction on a left side took turns to operate, electromagnet (9) just made screen frame (unit) (8) vibration to the active force that screen frame (unit) (8) produces rotation.Elastomeric effect is that screen frame (unit) (8) is resetted.In Fig. 1, screen frame (unit) (2) is the circular frame made from materials such as aluminium or stainless steels.Magnetic conductor (1) is installed on screen frame (unit) (2).Magnetic conductor is to be made by magnetic materials such as silicon steel sheets.Screen cloth (4) also is installed on the screen frame (unit).Electromagnet (5) is to make iron core with magnetic materials such as silicon steel sheets, is wound with lead on it.When electromagnet is switched on, just magnetic conductor (1) is produced attraction, screen frame (unit) (2) is moved with respect to support.Electromagnet (5) is installed on the support (6), and support (6) is fixed on the ground.Elastic supporter (3) is elastomers such as rubber bar or spring, and it is supported on screen frame (unit) (2) on the support (6), and screen frame (unit) (2) restoring force in when vibration is provided.Under the control of the pulse power (7), electromagnet (5) transfusion work makes screen frame (unit) (2) do principal oscillation in the horizontal direction.Fig. 7 provides a kind of typical circuit of the pulse power.

The example that Fig. 3 vertically moves for the screen frame (unit) main motion.Principle is identical with example among Fig. 1, and just the screen frame (unit) direction of primary motion is a vertical direction.

Advantage of the present utility model: vibration frequency can be adjusted to more than the 200HZ from zero always continuously. Amplitude can be adjusted to more than the 10MM from 0.1MM. Vibratory sieve can make residue on sieve automatically discharge along the screen frame edge. Because vibration force is transmitted by electromagnetic force, does not have direct mechanical constraint, thereby has improved the durability of vibratory sieve.

Claims

1, a kind of vibratory sieve, by screen frame (unit) (2) (13), elastic supporter (3) (14), support (6) (17), screen cloth (4) parts such as (15) are formed, feature of the present utility model is a plurality of electromagnet (5) (16) that are equipped with on the support (6) (17) the regular distribution of screen frame (unit) (2) (13), screen frame (unit) (2) (13) go up with corresponding of electromagnet pole on magnetic conductor (1) (12) is installed, electromagnet (5) (16) is applied frequency and the adjustable pulse current of voltage swing makes the regular conducting work of electromagnet drive screen frame (unit) (2) (13) and vibrate to produce rotating electromagnetic power.

2, vibratory sieve according to claim 1 is characterized in that the original paper of DM in the pulse power (7) (18) is VMOS FET or other high power semiconduction tube.