Product principle

By using the principle of screw delivery and squeezing, water flows out from the metal screen mesh while the pressure is increasing and the mesh hole of the filter is decreasing, achieving the purpose of wastewater dehydration.

Product structure

(1)Inlet：sludge flows in the filter by gravity from the outlet of the mixing tank. A liquid level switch can be installed
                  additionally on the top for automatic handling of sludge.
(2)Screwrod ：the screwrod is the heart of the screw type extruder, which has sludge delivery and extrusion functions.
                             The threads are screw type with variable lead screw design, which can slowly squeeze sludge out of water.
(3)Filter：its main purpose is to filter out water. The flow distribution is mainly divided into three sections in accordance
                   with the sludge property
                    1.Sludge compression section: It squares out of excessive water from sludge.
                    2.Water pre-compression section: It pre-compresses sludge into a sludge cake.
                    3.Sludge cake compression section: It compresses the sludge cake with high compressive pressure to low water
                       contents in sludge.
(4)Washing device：When handling sludge, the mesh holes on the surface layer of the filter is easy to clog, which affects
                                       water contents in the sludge cake. A cleaning pipe is designed to periodically wash the mesh holes to
                                       avoid clogging with sludge.
(5)Transmission mechanism：Operation is made through the transmission equipment of the sprocket and chains, which are
                                                       driven by a high-torque reducer motor.
(6)Water discharge hole：Sludge filtered water and cleaning water are collected in the water pan of the machine, which will
                                                be then discharged to the wastewater collecting tank or settling tank for treatment.
(7)Outlet：at the sludge outlet, the backpressure can be adjusted and the sludge cake can be scraped off, which is then
                     delivered to sludge storage tank or the conveyor to facilitate sludge transportation.

螺桿式與其他款式比較

項目 Contents	螺桿式擠壓機 Screw press	皮帶式脫水機 Belt press	板框式脫水機 Filter press
全自動化運轉 Full automation and continuous operation	◎	X
操作環境 Environment	◎	X	X
設備保養 Maintenance	◎		X
清洗用水 Screen wash	◎	X	X
泥餅含水率 Moisture content	◎	X	X
節能 Economize on electricity	◎	X
運轉成本 Running cost	◎	X

符號(Symbol)：◎表示〝優〞(Excellent)      表示〝尚可〞(Good)      X  表示〝不佳〞(Bad)

		生物 污泥 Bio sludge	化學 污泥 Chem- ical	化纖 污泥 Chem- ical& fiber	FGD 污泥 FGD sludge	原水 污泥 Raw water	紙漿 泥水 Pulp& paper	重油 污泥 Oil sludge	PCB 污泥 PCB sludge	研磨 污泥 Putty sludge
	污泥擠壓機 Screw press	85%	80%	80%	40%	55%	52%	75%	75%	70%
	皮帶式脫水機 Belt press	90%	87%	90%	60%	70%	70%	90%	87%	80%
	板框式脫水機 Filter press	87%	85%	85%	40%	60%	60%	85%	85%	75%

Product features

1.Small size with a small footprint.
2.Least problems on mechanical failures.
3.Fully enclosed design, avoiding escape of unpleasant odor.
4.No consumables, saving operating costs.