2.3 Technical requirements

2.3.1 General requirements

(1) Provide high-efficiency, energy-saving and low-noise chain conveyors, automatic unpacking machines, waste bag packers, circular vibrating screens, pipe chain conveyors, return pipe chain conveyors, rotary discharge valves, cleaning mechanisms, and pipes The chain support platform and electronic control system are guaranteed to be technologically advanced, economical and reasonable, mature and reliable products, and have high flexibility, which can not only meet the needs of normal operation mode, but also meet the requirements of start-stop and variable load.

(2) The maximum sound pressure level at a distance of 5m from the equipment shall not exceed 85dB(A) (with material state, average value above 4 points).

(3) The pipe chain conveyor should be well sealed to ensure that the powder does not leak.

(4) The bearings are lubricated with grease, which is convenient for maintenance.

(5) Less than 1/‰ of the material entering the woven bag in the silo

(6) The return pipeline of the pipe chain machine is equipped with an inspection port.

(7) Unpacking volume: 25kg/bag≧400bags/h 50kg/bag≧250bags/h.

(8) Pipe chain conveyor capacity: ≧15m3/h.

2.3.2 Requirements for motors, reducers and electrical appliances

(1) The motor adopts Y series motor, 4 grades can be frequency conversion, and the motor protection level is not less than IP55.

(2) The reducer adopts gear transmission, the brand is Changzhou Naiqiang/Tongye/Disai.

(3) The reducer is filled with 2# gear oil.