Overview
The rotary grille screen cleaner is a mechanical equipment widely used in the field of sewage treatment. It is mainly used to intercept and remove various solid debris in sewage, such as tree branches, plastic pieces, paper, cloth strips, and larger suspended particles. It plays an important role in municipal sewage treatment, industrial wastewater treatment, pump station inlets and other places. It can effectively protect subsequent sewage treatment equipment, prevent debris from entering and causing blockages, damage and other problems, and ensure the smooth progress of the sewage treatment process.
Working Principle
I. Sewage Inflow and Interception Stage:
Sewage flows into the front part of the rotary grille screen cleaner through the inflow channel. Driven by the water flow, the solid debris in the sewage will come into contact with the grille bars. The grille is composed of a group of metal grille bars arranged in parallel with a certain spacing. These grille bars are like "filter screens" one by one, which can intercept solid debris with a size larger than the grille bar spacing, so that most of the debris in the sewage is blocked in front of the grille, while the sewage can continue to flow backward through the gaps of the grille.
II. Rake Teeth Cleaning Stage:
The rotary grille screen cleaner is equipped with rake teeth installed on chains or ropes. These rake teeth will make a circular revolving motion along with the chains or ropes. When the rake teeth run to the front of the grille, they will be inserted into the pile of debris intercepted by the grille. As the rake teeth continue to rotate, just like a comb combing hair, the debris will be lifted up along the grille, 脱离污水表面，and after being lifted to a certain height, the debris will fall into the collection device set beside it under the action of gravity or other auxiliary devices (such as scrapers), completing a cleaning action.
III. Cleaning and Maintenance Stage:
During the long-term operation process, some residual fine debris, dirt and so on may adhere to the grille bars and rake teeth, which will affect the decontamination effect and the normal operation of the equipment. For this reason, the rotary grille screen cleaner is usually equipped with a cleaning device, which can regularly wash the grille and rake teeth to remove the adhered impurities. At the same time, it is necessary to regularly check the operating conditions of key components such as chains, ropes and motors of the equipment, and timely replace or repair the seriously worn components to ensure the long-term stable operation of the equipment.
Performance Characteristics
I. Efficient Debris Interception Ability:
It can accurately intercept solid debris of different shapes and materials. As long as the size of the debris is larger than the grille bar spacing, it can effectively block it in front of the grille. It has an excellent effect on preventing larger-sized debris from entering the subsequent sewage treatment links, ensuring the normal operation of the subsequent equipment and the stability of the entire sewage treatment system.
II. Continuous Automatic Operation:
Driven by the driving device such as the motor, the rake teeth on the chains or ropes make a circular revolving motion, realizing automatic and continuous decontamination operations. It does not require frequent manual intervention. As long as the equipment is normally turned on, it can continuously remove debris from the incoming sewage, greatly improving the efficiency of sewage treatment and reducing labor costs.
III. Strong Adaptability:
It can adapt to sewage environments with different flow rates and water qualities. Whether it is municipal sewage mixed with various domestic debris or industrial wastewater containing some production waste, the rotary grille screen cleaner can play its normal role. Moreover, its requirements for the installation environment are relatively low, and it can be conveniently installed and used in different pump stations, sewage treatment plants and other places.
IV. Compact Structure and Durability:
The overall structural design is relatively compact, occupying relatively small space, which is convenient for layout and installation in a limited space. Meanwhile, its main components such as grille bars, rake teeth, chains (or ropes) are usually made of high-strength metal materials, having good wear resistance and corrosion resistance, and can be used for a long time in the harsh sewage environment, reducing the replacement frequency of the equipment and the use cost.
V. Simple Operation and Convenient Maintenance:
The operation of the equipment is relatively simple. Basic operations such as starting, stopping and adjusting the running speed can be realized through simple control buttons. The daily maintenance work mainly focuses on regularly checking the wear of components, cleaning the debris on the grille and rake teeth, and lubricating key components. It does not require complicated professional skills and tools, and ordinary maintenance personnel can be competent after simple training.
Structural Components
I. Grille Main Body:
It is composed of multiple metal grille bars arranged in parallel. The material of the grille bars is usually stainless steel, carbon steel, etc. According to different usage scenarios and interception requirements, the spacing of the grille bars can be adjusted to adapt to intercepting debris of different sizes. The grille main body is usually installed in the sewage channel, forming the first line of defense for sewage entry and preliminarily intercepting debris.
II. Rake Teeth and Transmission System:
The rake teeth are the key components for realizing the decontamination function. They are generally installed on chains or ropes, and the chains or ropes are driven by transmission devices such as motors and reducers to make a circular revolving motion. The shape and spacing of the rake teeth are reasonably designed to facilitate inserting into the debris pile and effectively lifting the debris, ensuring the decontamination effect. The transmission system has appropriate power and transmission ratio to stably drive the rake teeth to operate and ensure the normal work of the equipment.
III. Collection Device:
It is located on one side of the grille screen cleaner and is used to collect the debris lifted up by the rake teeth and dropped. There are various forms of collection devices, such as garbage bins, conveyor belts, etc. They can be selected according to the actual treatment volume and site conditions. Its purpose is to facilitate the centralized transportation and treatment of the cleaned debris and keep the working area clean.
IV. Cleaning Device:
In order to ensure the decontamination effect and the long-term stable operation of the equipment, the cleaning device is essential. It can adopt the forms of high-pressure water guns, spray nozzles, etc., and regularly wash the grille bars and rake teeth to remove the dirt, fine debris and so on adhered to them, so that the equipment is always in a good working state.
Application Cases
I. Municipal Sewage Treatment Plant:
At the inlet of the municipal sewage treatment plant, a large amount of urban domestic sewage flows in every day, containing various solid debris such as leaves, plastic bags, and paper towels. The rotary grille screen cleaner installed here can effectively intercept these debris, prevent them from entering the subsequent grit chambers, biochemical treatment tanks and other equipment, reduce the burden of subsequent treatment links, ensure the efficient operation of the entire sewage treatment process, improve the quality of sewage treatment, and finally enable the treated sewage to meet the discharge standards.
II. Industrial Wastewater Treatment Station:
The wastewater generated during industrial production often contains various industrial waste materials, such as cloth strips in the wastewater of textile factories, dye lumps in the wastewater of printing and dyeing factories, and metal scraps in the wastewater of machinery factories. The rotary grille screen cleaner plays a role in the inflow channels of these industrial wastewater treatment stations, intercepting and removing these solid debris, avoiding the blockage or damage to the subsequent filtering equipment, reaction equipment and so on caused by the debris, ensuring that the industrial wastewater can smoothly enter the subsequent treatment process, achieving the standards for treatment and reuse, and reducing the environmental protection risks and operating costs of enterprises.
III. Pump Station Inlet:
At the inlet of the pump station, whether it is a rainwater pump station or a sewage pump station, the water flow may carry a large amount of debris, such as tree branches and stones. The rotary grille screen cleaner installed here can intercept the debris in advance when the pump station pumps water, prevent the debris from entering the key equipment such as pumps inside the pump station, protect the normal operation of the pumps, reduce the number of equipment failures and repairs caused by debris blockage, extend the service life of the equipment, and improve the operation efficiency of the pump station.
In conclusion, the rotary grille screen cleaner plays an indispensable role in the field of sewage treatment by virtue of its unique working principle, excellent performance characteristics and wide applicability. It is an important equipment for ensuring the normal operation of the sewage treatment system, improving the efficiency of sewage treatment and protecting the subsequent equipment. With the continuous development of sewage treatment technology and the continuous improvement of environmental protection requirements, its application prospects will be even broader and its functions are expected to be further optimized and upgraded.
