Functions of the Dongfeng Dolika D7 cleaning and suction truck:
The Chengli Wei brand cleaning and suction truck is mainly suitable for dredging, cleaning and suction and sewage removal operations of urban sewers, rainwater wells, sedimentation wells and ditches. It is also suitable for pipeline cleaning in industries such as oil refining, steel, chemical, housing management and sanitation, and for the suction, loading, transportation and discharge of wastewater and sediments.
Main performance and product features of the Dongfeng Dolika D7 cleaning and suction truck:
●Adopts the mature product of the Dongfeng second-class chassis EQ1110SJ8BDC series, with reliable quality and convenient and fast after-sales service.
●A variety of engines are available, with power of 115kW-125KW, rated speed of 2500r/min, and emissions reaching the China 5 standard.
●PTO power take-off is used to take power from the chassis engine and deliver it to the vacuum pump and high-pressure water pump respectively, realizing multi-point high-power power take-off, which is a key technology.
●Vacuum pump: ultimate vacuum degree: -0.093MPA, maximum air extraction volume: 450m3/h. Maximum working speed: 460r/min. Water ring vacuum pump, Siemens technology, domestically produced.
●Tianjin Tongjie high-pressure water pump: rated pressure: 22MPa, rated flow: 215L/min, maximum speed: 1450r/min. High-quality domestic high-pressure plunger pump.
●Sewage tank: made of 5mm boiler steel plate, cylindrical, with automatic opening and closing rear cover and tilting discharge. A high liquid level alarm protection device can be installed, with a total capacity of 7m3.
●Clean water tank: composed of 2 tanks connected by pipelines, with built-in anti-wave plate. A low water level alarm protection device can be installed, with a total capacity of 2.5m3.
●Water hose reel: hydraulically driven, forward and reverse rotation, stepless speed regulation. Installed on the rear cover of the sewage tank, it can wind and store no less than 60m of DN19 special rubber hose.
●Special high-pressure hose: domestic high-quality DN19 special rubber hose for sewer dredging, resistant to high pressure, light in weight, low frictional resistance and strong scratch resistance. Standard configuration hose length: 60m.
●Special suction hose: high-quality PVC synthetic material suction hose, light and tough, with an inner diameter of 102mm and a length of 7m.
●Nozzles: standard configuration of 10 nozzles (standard) or 2 68 sinking-well nozzles
●Triangular nozzle: sprays forward and backward at the same time. Suitable for completely blocked pipelines. (Optional)
●Mushroom-shaped nozzle: the nozzles are arranged at two angles, with greater thrust, used for pipelines with grease. (Optional)
●Bomb-shaped nozzle: the nozzle is at an angle of 15° or 30° to the axis of the nozzle, used under normal circumstances. (Optional)
Product highlights of the Chengli Wei brand Dongfeng Dolika D7 cleaning and suction truck:
1: The water ring pump base adopts original imported high-wear-resistant bearings from Japan (compared with the 2 domestic bearings of traditional water ring pump bases, four of them further extend the service life of the pump, strengthen the pump operation and effectively improve the working efficiency of the suction pump)  
2: The professionally customized power take-off is matched one-to-one with the speed ratio according to the working speed of each vehicle's engine, high-pressure pump and suction pump, more effectively reducing the use resistance of the high-pressure pump and suction pump, fully exerting the best use effect, and avoiding the situation of high temperature operation, back-force operation and the so-called small horse pulling a big cart. 
3: The sealing rings of all high-pressure accessories of the vehicle are imported seals, which are not prone to insufficient pressure spraying, water leakage and pressure relief   
4: The vehicle profile tank body is made of national standard thickened material. The standard vehicles produced by our company weigh about 0.5 tons more on average than the same models of other companies, being truthful and practical without falsification.