Spiral Squeeze Pulp Machine for Dewatering in Pulping and Paper-Making Processes

The spiral squeeze pulp machine is an important piece of equipment widely used in the paper-making industry, suitable for black liquor extraction and pulp concentration dewatering in various pulp manufacturing plants. Its core structure consists of one or two spiral blades that continuously push the pulp forward through rotation, while stirring and mixing in the process to ensure the uniformity of the pulp. The spiral squeeze pulp machine can effectively remove moisture from the pulp, thereby increasing the concentration and viscosity of the pulp to meet the requirements of subsequent production processes.

A stainless steel spiral squeeze pulp machine

Technical Parameters

Material: 304 stainless steel + carbon steel
Squeezing method: Physical squeezing
Classification:
- Single spiral squeeze pulp machine
  - Squeezing method: Physical squeezing
  - Pulp concentration: 10–14%
  - Output concentration: 25–35%
  - Production capacity: 10–15 T/D
  - Motor power: 15 kW
- Double spiral squeeze pulp machine
  - Pulp concentration: 7–10%
  - Output concentration: 20–40%
  - Production capacity: 15–150 T/D
  - Motor power: 22–90 kW
Screen Type:
- Perforated screen + metal woven mesh
- Wedge wire screen

The interior of the spiral squeeze pulp machine consists of a spiral rod and a screen

Difference

Item	Single spiral squeeze pulp machine	Double spiral squeeze pulp machine

Structure	One spiral blade, pulp is conveyed and processed through a single channel	Two spiral blades, usually rotating in opposite or relative directions, providing stronger stirring and mixing effects
Capacity	Lower processing capacity, suitable for small-scale or low concentration pulp processing	Stronger processing capacity, capable of handling higher concentration or larger flow of pulp.
Dehydration effect	The dewatering effect is average and suitable for pulp with less stringent moisture requirements.	The dewatering effect is better and can effectively remove moisture from the pulp.
Energy consumption	Energy consumption is relatively low, but there is a deficiency in processing efficiency.	Energy consumption is relatively high, with high processing efficiency and overall energy efficiency being superior.
Scope of application	Suitable for general paper production, especially for small batch production.	Suitable for large-scale production and high-demand pulp processing, widely used in modern paper mills.
Working principle	The pulp is pushed from the feed inlet by a spiral blade, continuously stirred and mixed during the process, with moisture gradually expelled under pressure, ultimately discharged through the outlet to achieve the desired concentration and viscosity.	Utilizing two spiral blades rotating in opposite directions, a powerful conveying and stirring effect is created, allowing the pulp to experience greater pressure during processing, thereby more effectively removing moisture, and ultimately discharged through the outlet to achieve higher concentration and viscosity.

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