performance of the  hydraulic screen changer-double piston screen changer
1,Double-piston screen changer works simultaneously. One net works. Another replaced; without interrupting the flow of material and production. And eventually fulfills the exchange of screen without stopping the machine.

2,Exhaust system device can fully defuse the gas mixed in the materials, then improving product quality. And double channels expand the filtration area to meet more productive, more high-quality production need s from customers.

How to work                                                                                                                                                            
The double piston Screen Changer allows for filtration of most all polymers without interrupting production during a screen change. The Screen Changer consists of two pistons with each containing a filter cavity. When a screen change is required, one of the pistons is moved out of the housing while the other remains in the operating position. The dirty screen pack is removed and replaced with a new one. The piston is then moved back into the housing to its venting stages before resuming operation. These steps are then repeated for the other piston. This concept allows for continuous filtration with no interruption or loss of production

Application
.sheet
.coating
.pipe
.compounding
.wire and cable
.tubing
.textiles(fibers and nonwovens)
.EVA, hot melt adhesive and PSA
.pelletizing(strands and underwater)
.recycling of most polymers
.blown film and cast film
.corrosive and degradable materials
.Textiles (fibers and nonwovens)

Technical Data

Type	Screen—Dm(mm)	Screen area(cm2)	Heating Power(kw)	Output(kg/h)
DHZ-2-100	Φ70	38 x 2	2	50--150
DHZ-2-120	Φ90	64 x 2	4.6	100--350
DHZ-2-160	Φ135	143 x 2	14	300--700
DHZ-2-200	Φ155	187 x 2	14	400--1000
DHZ-2-300	Φ300	300x2	14	1000--4000
DHZ-2-1800	Φ900	900x2	14	2000--6000

-double piston screen changer applied in the actual production line