double piston double working position screen changer for plastic machinery

This double working position hydraulic screen changer is designed to work with two channels inside. It contains two screens that work at the same time: one screen works, while the other one is changed during the process of screen replacements, thus the replacement without machine halt is ensured and no interrupt of material fluid and of production will occur. Therefore, the screen changer meets the customers' requirement of higher productivity and better quality.

1. The screen changer works simultaneously: when one net works, the other one replaced.

2. Exhaust system device can fully defuse the gas mixed in the materials and improve the product quality.

3. Double channels expand the filtration area to produce more high-quality production which meet the customers' need.

4. Apply to extrusion production in a wide range of materials and product.

5. Good sealing system ensures perfect sealing effect.

6. The function of filling material exhaust and pollution discharge guarantee the process of replacing screen continuously.

7. We design and manufacture production of various sizes according to the customers' requirement.

8. A well-designed structure makes operation more convenient .

The double piston double working position 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)

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

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