CN2293368Y

CN2293368Y - Automatic lifting raker efficient thickener

Info

Publication number: CN2293368Y
Application number: CN 96231794
Authority: CN
Inventors: 魏毓衷
Original assignee: HAIFENG ELECTRIC MACHINERY CO Ltd JIANGSU PROV
Current assignee: HAIFENG ELECTRIC MACHINERY CO Ltd JIANGSU PROV
Priority date: 1996-05-03
Filing date: 1996-05-03
Publication date: 1998-10-07
Anticipated expiration: 2006-05-03

Abstract

The utility model relates to an automatic rake lifting high efficient thickener, which is used for condensing grey water in a dust removing system of a coal burning power station, belonging to an auxiliary machine of a heat power station. The utility model is characterized in that the rake automatic lifting high efficient thickener is composed of a barrel body, a hoe, a mainshaft, a transmission device, a control device, etc. The performance of the original thickener is remained; besides, the rake automatic lifting high efficient thickener is additionally provided with a moment arm for measuring moment and an automatic rake lifting device of an electric push rod for lifting a rake. Therefore, a speed reducer and a motor can not be damaged due to the oversized resistance of the hoe, and the high efficiency running of the automatic rake lifting high efficient thickener is guaranteed.

Description

The automatic rake-lifting high-efficiency concentrator

The utility model belongs to the subsidiary engine that a kind of heat power station ash disposal system is used, and specifically is applied to the efficient buck thickener of heat power station ash disposal system.

The thickener that the coal-fired heat power station of present China is used does not have the automatic rake-lifting function, when ash rake resistance increases, easily turns round bad reductor, even burns motor, influences the safe operation of power plant.

The purpose of this utility model provides a kind of thickener, and the energy automatic rake-lifting alleviates load when making it be hampered the power overrate, continues running normally and efficiently, and protection reductor and motor are not damaged.

The purpose of this utility model is achieved in that the automatic rake-lifting high-efficiency concentrator mainly is made up of staving, grey rake, main shaft, automatic rake-lifting device, moment arm, drive unit and control device, it is characterized in that the ash rake is fixed in the main shaft lower end with bolt, the main shaft upper end links by the axle head shaft coupling of splined shaft and reductor, the main shaft middle part is equipped with and is carried rake executing agency, main shaft is contained in the sliding sleeve that has two bearing shells, sliding sleeve is contained in again in the outer fixed cover, drives main shaft by the lever swing of electric pushrod and moves up and down along sliding sleeve; Moment arm is contained on the slide between reductor and the bearing, and safe chi, stage clip and two-stage limit switch are housed on the moment arm; Ash rake resistance is surveyed by the mechanical force moment arm, and when the moment of resistance surpassed permissible value, safe chi pressed off first order limit switch, instigates the electric pushrod pull lever, and main shaft and ash rake are risen automatically; If ash rake resistance continues to increase, moment arm further presses off second level limit switch, stops motor and rotates.Main shaft and shaft coupling adopt and bear the big splined shaft binding of moment; The ash rake promotes the back and is progressively resetted several times by automatically controlled control, successively clears up the mortar of piling up in the staving from top to bottom, makes the ash rake change operate as normal over to.

The utility model because be provided with is carried rake mechanism, so the power that is hampered is carried when increasing and alleviated resistance behind the rake and still can continue operate as normal, successively removes mortar from top to bottom, and resistance reduces back ash rake and resets again and change operate as normal over to; When the too big transmission mechanism of power can't overcome just in case be hampered, moment arm pressed off second level limit switch, cut off motor main circuit, stopped the motor operation, thereby can protect reductor and motor not to be damaged effectively, ensured that thickener efficiently moves.

Fig. 1 is an automatic rake-lifting high-efficiency concentrator front view, among the figure: 1, be ash rake, 2, be main shaft, 3, undersetting, 4, be upper bracket, 5, be overcoat, 6, be inner sliding sleeve, 7, be suspension bracket, 8, be thrust bearing, 9, be lever, 10, be electric pushrod, 11, be moment arm, 12, be spring assembly, 13, be the secondary limit switch, 14, be reductor, 15 is motor, 16, be safe chi.The transmission mechanism in the bucket of this thickener that only draws among the figure, its peripheral staving omits.

Claims

1, a kind of automatic rake-lifting high-efficiency concentrator, mainly form by staving, grey rake, main shaft, drive unit and control etc., it is characterized in that the ash rake is fixed in the main shaft lower end with bolt, the main shaft upper end links by the axle head shaft coupling of splined shaft and reductor, the main shaft middle part is equipped with and is carried rake executing agency, main shaft is contained in the sliding sleeve that has two bearing shells, and sliding sleeve is contained in the outer fixed cover, moves up and down along sliding sleeve by the lever swing drive main shaft of electric pushrod; Moment arm is contained on the slide between reductor and the bearing, and safe chi, stage clip and secondary limit switch are housed on the moment arm; When the moment of resistance surpasses permissible value, safe chi is pressed to stage clip and is opened first order limit switch to certain position on the moment arm, sending the signal of telecommunication carries rake for the electronic rake mechanism of carrying, electric pushrod is drop-down, upwards slide along outer sliding sleeve by lever, jib, pulling main shaft and ash rake, the ash rake is carried on simultaneously rotating; If resistance continues to increase, safe chi further presses off second level limit switch on the moment arm.

2,, it is characterized in that main shaft and shaft coupling connect with spline according to the described automatic rake-lifting high-efficiency concentrator of claim 1.