Rotatory screens
Defender®
Rotary screens are pre-treatment equipment used to separate solid waste from clean water through a filter drum. This drum can be either screen or perforated depending on the type of solids to be treated.
TR SMART®
New!
We have developed an optional intelligent programme for our rotary sieves. It is equipped with a frequency inverter designed specifically for the motor, which guarantees low energy consumption. It operates as a stand-alone machine that does not require any configuration or parameterisation, just plug and play. The TR-Smart® integrates a data logger based on historical values, which calculates the optimal start-up speed in any application, avoiding overflow and the frequency inverter adjusts the screen speed automatically.
In addition, it measures the amount of dirt accumulated in the equipment, and decides when to start the cleaning cycle.
MODELS OF SCREENS
Several different screen models are available depending on the flow requirements.
Capacity
- From 7 m3/h up to 363 m3/h in clean water
- Small flow rates
- High performance with high solids load
- Smaller filter surface
Description
- Produces polished effect, high output water quality
- Protected from outlet overloads
- Robust, high strength infused GRP lamella construction,no colapsa.
- Easy cleaning
Capacity
- From 133 m3/h up to 5864 m3/h
Description
- Produces polished effect, high output water quality
- Protected from outlet overloads
- Robust, high strength infused GRP lamella construction,no colapsa.
- Easy cleaning
Description
Its mission is to eliminate the solids carried by the water, in order to avoid clogging and mechanical problems in the installations.
This equipment requires little maintenance and operates continuously, without the need for electricity.
In urban waters, they can replace primary decanters in many cases, providing the elimination of coarse sands and up to 30% percentages of grease and effluent leftovers. Spans of 0.50 to 0.15 millimetres are used.
MODELS OF MESHES
Perforated
Mesh size from 2 to 3 mm Ø
Grid
Mesh size from 0.15 to 2mm
ROTARY SCREEN FUNCTIONING
- The effluent to be treated enters through the flange on the outside of the screen body and is evenly distributed through the spillway and overflow through the filtering drum.
- The solids are retained on the surface of the drum while it is rotating, the spill penetrates through the mesh opening and performs a self-cleaning function by passing through the lower part of the drum again.
- As it passes through the outer scraper, the solids are released from the screen and gravity causes the solids to fall off the scraper.
OPERATION OF ROTARY SCREEN
- The effluent to be treated is pumped or pressurised to the screen head.
After a certain retention time, determined by the filling of the screen’s feed box, a laminar overflow occurs in which the liquid slides smoothly through the filter mesh. - In this sliding process, the liquid passes through the screen (most of it in the first section), with the solids retained on the screen surface and falling to the bottom and draining out of the screen. and out of the screen. The filtered liquid falls into the lower tank The filtered liquid falls into the lower tank and is evacuated by gravity through a pipe.
- By means of a lifting structure, it is possible to install the equipment can be installed at the head of the plant, so that it can move on to the next stage of the treatment stage without the need for pumping.
MANUFACTURING
- Safe designs with high quality materials
- Manufactured in 316 L stainless steel.
- GRP components and protections.
- Incorporates effective safety system.
- GRP flanges with DIN/ANSI connection.
- Pressurised water cleaning system for the filtering drum.
- Shot blasted finish.
- Solids scraper adjustment
PARTS
Filter drum
Drive Unit
Sensor
Cover
Cleaning system
