Continuous Screw Press Machine

Description Technical Parameter Working Principle Features Applications

Description

Continuous screw press

The ZTZY continuous screw press is a round-the-clock operational extrusion separation device designed for liquid extraction from organic materials and solid-liquid separation of inorganic residues. It operates stably and smoothly with minimal downtime, low maintenance costs (due to its non-force, protective screen extrusion), and exceptionally high juice extraction and dewatering rates. Key highlights include juice yields of up to 85% for certain fruits and vegetables, the unique ability to process materials with pits intact, and residue dryness levels reaching 20%, delivering significant economic benefits for waste recycling or liquid extraction. With its high efficiency, the initial investment cost can typically be recovered within a single processing season, offering outstanding cost-effectiveness.

Three Key Factors for Press Selection: Feeding, Liquid Discharge, Residue Removal.

Technical Parameter

Model	Capacity（t/h）	screw diameter（mm）	rotate speed（r/min）	Power（kw）	Dimensions: length * width * height（mm）	Weight（t）
ZTZY-120	0.1～0.3/0.26	120	30	2.2/3	1900×420×700	0.5
ZTZY-180	0.3～1/0.5	180	20	5.5	2500×550×800	0.8
ZTZY-250	0.8～3/0.93	250	16	7.5	3100×650×900	1
ZTZY-315	2～5/1.6	315	16	11	4100×790×1320	2
ZTZY-400	5～13/2	400	10	22	4700×990×1420	4
ZTZY-500	8～18/3.3	500	9	37	6100×1200×1500	6
ZTZY-630	15～35/4.2	630	9	45	6800×1350×1650	7.5
ZTZY-800	25～50/7	800	7	75	7500×2300×2200	9
ZTZY-1000	30～70/8.5	1000	6	90	8100×2700×2600	12

Working Principle

Schematic diagram of spiral continuous screw extruder

This continuous screw press is designed based on the incremental compression principle, utilizing the coordinated action of the feed hopper, screw, screen, and discharge cone. Material is evenly fed into the inlet via a pump or auger. As the screw rotates, it compresses the material, forcing liquid through the screen into a collection tray below. The dewatered residue is then conveyed via a belt to a designated location.

Features

Continuous operation, outperforms traditional "frame-type" presses, reducing labor costs.
Low-speed stable operation prevents temperature rise in materials.
Incremental compression principle achieves high efficiency with low energy consumption.
Pneumatic backpressure control on the discharge cone ensures uniform residue dryness.
Consistent dryness unaffected by feed rate, enabling seamless integration with other equipment.
Specialized feed hopper design prevents material bridging.
No slippage, backflow, or shaft adhesion during processing.
No clogging or jamming of the screw during residue discharge.
Self-cleaning mechanism through coordinated components eliminates screen blockage.

Applications

Juice extraction from fruits, vegetables, roots, stems, leaves, flowers, and pits:

-Fruits: Apples, pears, grapes, pineapples, kiwis, blueberries, citrus, wolfberries, sea buckthorn.
-Flowers: Chrysanthemums, peonies, roses.
-Others: Ginger, alfalfa, sugar beet, red hawthorn, Jerusalem artichoke, aloe, palm, olive, pomegranate.

Food processing:

Carrot peels, potato pulp, mushroom waste, glutinous rice distillers' grains, seafood waste, onion residue, winter melon pulp, bean sprout waste, citrus byproducts, tobacco, sugar beet pulp, coconut coir, tea residues, vinegar lees, brewer’s spent grains, coffee grounds, corn husks, furfural residue, fish paste, shrimp shell waste, poultry feathers/meat residue, soybean protein, pectin, xanthan gum.

Biopharmaceuticals:

Solid-liquid separation of herbal residues (granules, powders) and dewatering of plant-based medicinal materials.

Energy/fertilizer production:

Biogas residue, sweet sorghum, water hyacinth, cassava pulp, sweet potato residue, sugarcane bagasse, algae, gutter oil residue, agricultural waste, distillery sludge dewatering.

Waste management:

Fruit/vegetable waste, kitchen waste, municipal waste dewatering; organic-inorganic separation.

Manure dewatering:

Livestock/poultry manure (pig, cow, duck) and slaughterhouse wastewater separation.

Industrial & municipal applications:

Sludge dewatering (industrial wastewater, river sediment), pulp dewatering, plastic recycling.

Other Applications:

Filter residue, diaper waste, cellulose, medical waste, rubber waste, polymer materials, animal carcass disposal, leather dehydration, wood chip pressing, activated carbon processing, straw residue.