304 stainless steel or steelChain scraper (oil) machine
1Overview
THAFSeries chain scraper (oil) machineIt is a supporting equipment for the air flotation unit in sewage treatment,It is a professional product developed by our company, designed to be used in conjunction with various air flotation equipment,It isSpecially designed to remove oil, gel like substances, and suspended solids from industrial and urban wastewater.Suitable for scraping off floating slag generated in flocculation treatment processes. It applies the principle of chain transmission,It can be installed according to different civil engineering requirements of users.According to the quality of the treated wastewater and the added chemicals, the scraping speed can be adjusted to complete the scraping task with minimal power consumption.
THAFSeries chain scraper (oil) machineIt has the characteristics of adapting to local conditions, flexible slag removal control, stable operation, convenient operation, simple maintenance, and long service life.
The equipment chain can be made of high-strength nylon, 304 stainless steel or carbon steel. The equipment can be used on steel boxes (air flotation box bodies) or concrete tanks. Easy to install, very practical.
2、Machine structure (as shown in the following figure)
3Working principle
The chain scraper (oil) machine continuously removes suspended solids floating on the water surface, moves along the entire liquid surface, and pushes the suspended solids from the inlet end to the outlet end of the air flotation tank. The scraper of the scraper (oil scraper) is fixed at both ends of the chain, and the scraper (oil scraper) is driven by a sprocket transmission device driven by a stepless speed regulator. The scraper (oil) moves along the entire width of the groove, scraping pollutants into the slag discharge groove.
4Installation of the machine
4The driving shaft and the driven shaft must be on the same parallel line. Install the driving shaft first, and then install the driven shaft.
4The sprockets must be in the same straight line. When installing, first place the chain on the sprocket of the driving shaft, fix the driving shaft, and determine the installation of the driven shaft according to the length of the chain (it is best to adjust the tightness of the chain for the driven shaft). The chain sequence must be consistent, and the nylon interlocking blocks that fix the scraper must be aligned in both directions.
4After the installation of the two shafts and chains, install the bracket joint.
4After the installation of the joint, install the scraper.
4Install a continuously variable speed controller according to the on-site situation and connect the steel chain.
4After installing all the components, check the tightness and parallelism of each component, and conduct a power on test run.
4.7. The continuously variable speed controller must be powered on before starting the vehicle for speed regulation. The chain scraper (oil scraper) has a linear speed of 5.16-25.8m/min per minute (adjusted according to the site conditions).
5.Machine maintenance and upkeep
4.1The machine should be maintained and serviced, refueled in a timely manner, and any malfunctions should be promptly resolved.
4.2The running in period of the machine is one month. At that time, the chain scraper (oil) should be drained, the gearbox lubricating oil should be disassembled for flushing, and the oil should be replaced.
4.3Under normal operating conditions, the continuously variable speed regulator uses specialized continuously variable speed regulator synthetic oil. The first oil change time is 500 hours, and the oil should be changed every six months thereafter. Users need to have backup synthetic oil, and the speed regulation machinery factory guarantees the supply.
4.4Drip 20 # mechanical oil onto the steel chain once a week with an oil gun, in an appropriate amount.

6THAFThe basic configuration of the series chain scraper (oil) machine is as follows:
1Scraper several pages, using304Stainless steel plate, thickness1.5mm+NBR rubber sheet,thickness8mm
2Chain wheels, high-strength nylon chains; Chain trackQ235
3The chain adjustment bolt isstainless steel,
4Scraper Drive Shaft: Carbon Steel Anti Corrosion
5Stepless speed regulator: Select a well-known domestic stepless speed regulator according to the size of the air flotation machine, and run it for more than ten years without any problems.
Note: The above device configurations are for reference only. Users can choose according to their actual situation or make special customizations.

