The mechanical grille is a special sewage treatment equipment that can automatically intercept and remove various kinds of debris in the fluid continuously. The mechanical grille can be widely used in urban sewage treatment, water supply industry, power plant inlet, and also in operation. It can be used as a pre-stage screening equipment in the wastewater treatment process of textile, food processing, paper making, leather and other industries.

The biggest advantage of the mechanical grid during operation is that the degree of automation is very high. It has high separation efficiency and low power consumption, no noise, good corrosion resistance during operation, and can ensure continuous and stable operation under unattended conditions. The overload safety protection device is set up, and when the equipment fails, it will automatically stop, which can avoid overloading the equipment.

The mechanical grille can effectively adjust the running interval of the equipment according to the needs of its users, so that it can effectively realize its periodic operation to a certain extent. The equipment can be automatically controlled according to the liquid level difference before and after the grille, and has manual control function. For easy maintenance. Users can choose according to different work needs. Due to the reasonable structural design of the equipment, when the equipment is working, it has a strong self-cleaning ability and does not cause clogging, so the daily maintenance workload is small.

1. Installation requirements and maintenance

(1) Lay the foundation with cement, fill the anchor bolts, and calibrate with the spirit level. The installation should be firm and stable.

(2) The working environment should be well ventilated, temperature 5~400C, relative humidity ≤90%, power supply voltage fluctuation ≤10%

(3) Carefully check the performance of pumps, instruments, valves, etc. before putting into operation.

(4) After the commissioning of the unit is put into operation normally, the management personnel should not be tampering. If maintenance is required, the company can be notified to the customer for repair.

2. Electrical part: The extruder motor is controlled by abb inverter, and the heating zone and pressure control are controlled by Japanese rkc numerical control meter. Metering pump motor Japan Fuji inverter control, other electrical control has domestic brand control (such as: relays, buttons, indicators, wires, etc.)

3, steel production: the use of high surface contour of the cavity, therefore, the surface finish of the material is also relatively high. In addition, a refractory coating made of a special high temperature resistant binder and refractory material is applied to the investment mold, and the inner surface of the cavity which is in direct contact with the molten metal has a high surface finish. Therefore, the surface finish of the investment casting is higher than that of the general casting, and generally reaches Ra.1.6~3.2μm.

It can significantly improve the oxidation resistance at high temperatures, and at the same time can make the matrix of cast iron into single-phase ferrite. In addition, silicon and aluminum can increase the phase transition point so that it does not undergo a solid phase transition at the operating temperature, which can reduce the volume change and microcrack caused thereby. Chromium forms stable carbides and improves the thermal stability of cast iron. http://www.khnwatertreatment.com/