Introduction

Large-scale sewage treatment plants are equipped with mechanical grids, and the transmission system of the grid decontamination machine has three types: electric transmission, hydraulic transmission and hydraulic transmission. In engineering applications, transmission grids are common.

The emergence of some pollutants in daily life may immediately endanger the natural environment of our daily lives, especially the solution of domestic sewage, which is becoming more and more important. During the entire operation process, the mechanical grille can relatively protect some chemical substances such as chemical fibers in the wastewater, thereby preventing the deposition of these chemical substances in the wastewater, thereby achieving a very good practical effect of the sewage purifier.

The main technical parameters

Equipment name mine step fine screen

Equipment model KFS2000

Well width 2100mm

Well depth 2400mm

Water depth in front of the gate 1250mm

Screen length 2000mm

Installation angle 90°

Water hole diameter 3mm

Water volume 50000m3/d

Maximum water level difference across the gate 300 mm

Motor reducer SEW

Boost motor power 1.1Kw

Medium pressure pump power 11Kw

High pressure pump power 7.5Kw

Water consumption about 200m3/d (varies according to the actual start-stop ratio)

Main purpose and scope of application

The mine step finescreen decontamination machine is a high-efficiency fine-grid decontamination equipment that combines pollution interception and decontamination. Suitable for large, medium and small pumping stations as fine grids to intercept and remove floating objects in the water, such as weeds, paper, cigarette butts, melon seeds, fibers, hair, etc. This model has a high dirt capture rate , Which can ensure the effective implementation of subsequent treatment processes. 

The main structure and characteristics

The mine stepfine screen decontamination machine is mainly composed of main components such as driving device, frame, traction chain, mesh board with lifting ladder, washing system and electric control system. The drive motor is installed on the main shaft in the forward direction of the frame, and the screens on both sides are driven by the drive chain to extract the dirt trapped in its length from bottom to top, and when it reaches the upper part, through the steering function of the sprocket, Under the action of flushing water from the overhead flushing device, the unloading work is automatically completed, and the slag water is discharged into the slag collecting tank between the two sides of the screen and then discharged out of the machine by itself. The driving device of the mine step finescreen decontamination machine is located on the upper part of the frame, which is an imported brand SEW shaft-mounted reducer. Spiral adjusting devices are installed on the front and rear sides of the frame to adjust the tightness of the transmission chain. The frame of the stepfine screen decontamination machine for mines is an integral rectangular rigid structure assembled and welded by stainless steel plate and section steel. There is a water inlet hole at the lower water-inlet of the frame, the front and rear wall panels of the frame are provided with guide rails, and the upper part is also provided with an internal slag collecting trough, which extends to the outside of the machine. The frame is installed in the center of the grid well, and the gap between the two sides of the frame and the grid well is the channel for the water to be discharged after the grid is filtered. Diversion baffles are arranged on both sides of the water-incoming end of the rack, which can prevent floating garbage from passing through while diversion. The traction sprocket and guide device for transmission are respectively placed on the upper and lower sides of the frame. The stepped mesh plate is made of ASTM304 stainless steel, and the mesh surface is regularly arranged with small holes, which have the functions of water passing and dirt interception, and the step surface can intercept larger dirt. The stepfine screen decontamination machine is equipped with a reliable screen washing system. The medium pressure washing system starts and stops at the same time as the grille, which effectively removes most of the dirt trapped by the screen. The high-pressure flushing system removes some difficult-to-remove dirt and ensures mesh regeneration.

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