1. The purpose of this device is mainly used in sewage treatment plants and pumping stations, to meet the high-volume applications, drum and grill alone motor drive, you can monitor tool and drum respectively overload protection device running. 2. The main technical parameters of the device name of a single drum grill Crusher Equipment Type DFS-500 × 300 processing capacity 450m3 / h Total motor power 2.2KW equipment equipment height 1700mm width 500mm 3. Features 3.1 optimized blade design to ensure efficient cutting capacity and service life. 3.2 pairs of drum design, over-water flow to meet the large flow applications. PZG crusher processing capacity can be up to 420m3 / h, motor power 2.2kw. 3.3 grille gap is small, the smallest up to 6mm, can effectively ensure the cutting size. 3.4 import motor reducer, improve the reliability of equipment used. 3.5 customized mechanical seal system, can work in harsh environments for a long time the sewage. More than 3.6 motor designed to effectively prevent damage to the drum overload, improve system reliability. 4. The scope of supply assembly complete crusher, efficient and reliable operation of the required accessories, fasteners, local junction boxes, control box and the necessary cables, spare parts and so on. 5. Structural requirements 5.1 per drum crushers include: cutting blades, gaskets, shaft, drum grid, bearings and seals, sidebar, base, casing, reducer and motor. 5.2 biaxial design, the cutting insert and the shim should be monolithic separation and should not be integrants, two independent sets of cutters and spacers mounted on two parallel axes, alternately stacked, helical cutting implement . Two counter-rotating rotary shaft driven by the drive shaft. 5.3 drum grid by vertical carriage mounted circle and shaft components. Rotating drum gate will direct all solid particles into the opposite rotation of broken tools. The drum is driven by respective motors. 5.4 independent of the cutting blade and gasket cutting blade and gasket with high strength alloy steel, polished surface evenly and hardened to a minimum 45-50HRC. 5.5 crusher shaft axis and the shaft is made from high-strength alloy steel, quenched and tempered to meet the strength requirements. 5.6 drum drum grill made of stainless steel coil 304. Coil diameter of 6 mm, a pitch of 6 mm between the coil and the coil. Drum grid support frame is made of stainless steel 304. Drum shaft is made from stainless steel 304 5.7 Sidebar Sidebar made of A3 steel. Do surface corrosion. 5.8 base and chassis crusher base made of gray cast iron. There is a diversion device, which guide the solid particles at the same time directly into the crushing-type grille, can play a role in the protection of the bushing. The chassis is gray cast iron, the bottom is hot rolled sheet. 5.9 reducer reducer good performance to adapt to the harsh environment, with great shock absorption capacity. 5.10 can be submerged motor with IP67 motor, the motor can be used normally exposed in the air, when submerged under water can also be used normally. Motor rated power is 4 kilowatts (maximum), 220/380 volt, 3 phase, 50 Hz. b. motor service factor is 1.15. At full load, the efficiency factor of not less than 85%, the power factor of not less than 80%. 6. The main material mill: cutting blade and gasket: heat treated alloy steel shaft: Heat hexagonal base and housing: gray cast iron Sidebar: gray cast iron sealing surface: tungsten carbide / tungsten carbide rubber parts: NBR drum grid: stainless steel 304 mounting bracket: 304 stainless steel grill maintenance: stainless steel 3047. Two control system controller will provide independent control of the crusher. The controller is rated at 5.5 kw (maximum), 380 volt, 3-phase, 50Hz. 7.1 The controller is equipped with "on - off / reset - Automatic" third gear selector switch. "Off / Reset" position, crusher should be stopped. In the "open" position, crusher run. In "Auto" position, the crusher on / off by remote controller to open or stop. Only hit the switch to select "Off / Reset" position, the crusher will be reset. When security measures 7.2 7.2.1 blockage occurs, is in open / automatic modes controller will stop the crusher, and make it reverse to clear obstructions. After the blockage cleared, the controller will return to normal operation. If the blockage persists, the controller automatically reversing process execution within 30 seconds, you can perform up to three times. Should blockage after three reverse persists, the controller will cut off power to the motor, and start-up delay and abnormal status indicator.