Central drive mud scraper It is a suspended sludge removal equipment, which is suitable for removing sludge from circular primary sedimentation tank, secondary sedimentation tank and thickener in water treatment engineering.
Central drive mud scraper consists of rake frame, vertical shaft drive device and over torque device, among which:
1. The lower end of the vertical shaft extends into the mud bucket, and the lower shaft end is fastened with a mud scraper, which is used to scrape the accumulated mud in the mud bucket to make it discharged evenly.
2. The sedimentation tank is of concrete or steel structure. The bottom of the tank is slightly conical, and the middle of the tank bottom is a sludge bucket connected with a sludge pipe. The working bridge is concrete or steel structure. This equipment does not include the pool body and the working bridge. The user can solve the problem by himself. Our factory can design and manufacture the steel structure pool body and the working bridge on behalf of the user.
3. The rake frame consists of two large rakes and two small rakes in a cross shape, which is parallel to the pool bottom which is slightly conical. The rake frame is fixedly connected with the vertical shaft with crossheads. The bearing on the vertical shaft is a combination of radial and thrust bearings, which are lubricated with lubricating grease. Underwater sliding bearing , composed of nylon bushing, etc., lubricated with pressurized clean water.
4. The driving device is a three-stage vertical cycloidal pinwheel reducer, which is connected to the vertical shaft with a tooth embedded coupling. The reducer is fixed on the base of the working bridge. Over torque device is shearing pin , assembled in a chip mounted coupling. In case of over torque during operation, cut off the shear pin to protect the whole set mechanical equipment , not damaged.
working principle
The sludge is scraped to the central sludge collecting tank by the scraper through the deceleration drive and the transmission of the suspension component, and the sludge is scraped to the central sludge collecting tank by the hydrostatic pressure or pump Drain out of the pool. The middle water inlet and sludge discharge are adopted, and the surrounding drainage is adopted to ensure uniform water flow. Self suction sludge discharge with liquid level difference, scum scraping and discharging device and overload protection device.
characteristic
1. The transmission part adopts electrical and mechanical double overload protection, which makes the operation more reliable.
2. The underwater part is made of stainless steel, which has a long service life of corrosion resistance.
Main structure
The center driven mud scraper is mainly composed of driving device, main shaft Railing , steel beam, vertical grid, support, mud scraper, overflow weir plate, pull rod, small scraper, underwater bearing, flow stabilizing cylinder, electric control box and other components.
application area
The center drive mud scraper can be widely used in sewage treatment projects in cities, chemical industry, textile, metallurgy and other industries. The utility model has the advantages of reasonable structure, high efficiency, convenient operation and maintenance, and is an ideal supporting facility for sewage treatment projects.
Main technical parameters of equipment
|
Model and specification
|
Applicable pool diameter (m)
|
Motor power (kw)
|
Outer edge speed of scraper (m/min)
|
Number of wiper arms
|
Installation dimension (mm)
|
|
Primary sedimentation tank
|
Secondary sedimentation tank
|
H
|
A
|
B
|
C
|
D
|
|
ZXG-6
|
six
|
0.37～0.75
|
2-3
|
1.5-2.5
|
two
|
one hundred and forty
|
three hundred and forty
|
320>
|
one hundred and five
|
four hundred and twenty
|
|
ZXG-7
|
seven
|
one hundred and sixty
|
|
ZXG-8
|
eight
|
one hundred and eighty
|
|
ZXG-9
|
nine
|
two hundred and twenty
|
|
ZXG-10
|
ten
|
two hundred and fifty
|
|
ZXG-11
|
eleven
|
three hundred and twenty
|
|
ZXG-12
|
twelve
|
three hundred and sixty
|
|
ZXG-13
|
thirteen
|
four hundred and fifty
|
|
ZXG-14
|
fourteen
|
five hundred
|
|
ZXG-15
|
fifteen
|
0.75～1.1
|
six hundred and fifty
|
|
ZXG-16
|
sixteen
|
eight hundred
|
|
ZXG-18
|
eighteen
|
nine hundred
|
main performance
（ 1) Sludge scraping at the bottom of the pool, the driving device is driven by a deceleration drive mechanism, which is compact in structure and high in mechanical efficiency;
（ 2) Oblique mud scraper, good continuity and high mud collection efficiency; The rubber plate for mud scraping shall be installed under the stainless steel mud scraping plate to ensure clean mud scraping without floating mud.
（ 3) The slope ratio of the tank bottom is 1:10, and the sludge resistance can be ignored when scraping the sludge.
（ 4) The main beam is made of square steel with high structural strength. The process of hot galvanizing followed by topcoat spraying is adopted with strong anti-corrosion performance. The main beam can also be directly poured with concrete, which saves more investment.
（ 5) It is easy to operate and can realize remote control.
