Vacuum systems for paper machines

Release time:

Feb 18,2023

In the auxiliary system of the paper machine, the energy consumption of the vacuum system accounts for 30%~40% of the entire system, and some are even higher.

Problems faced by vacuum systems

In the paper machine auxiliary system, the vacuum system plays an extremely important role in both energy consumption and equipment investment.

The speed and quantity of modern paper machines are changing more and more, and the type of paper is also changing with the market. Vacuum systems face serious challenges:

(1) The vacuum system must be refined to adapt to changes in paper volume and speed;

(2) The vacuum system must adapt to the mesh formed at different stages of use of the paper machine;

Vacuum systems must provide optimal water and electricity consumption and save energy.

Comparison of two vacuum systems

Water ring vacuum pump vacuum system

The principle of water ring vacuum pump will not be introduced here, and a lot of information is introduced. The vacuum system of the paper machine is shown in Figure 1. In the actual design process, some other vacuum systems are also derived from this, but their basic core remains unchanged, mainly including steam separators, water ring vacuum pumps, vacuum pump water ring water systems (vacuum pump water collection tanks, self-priming tanks, cooling towers and other equipment).

Inverter turbo vacuum system

The working principle of the turbo vacuum pump: from each vacuum suction water mixture of the paper machine into a special vapor separator, the pumped liquid and lost fine fibers are installed at the bottom of the gas-water separator through the pump, and the gas enters the turbine, and the vacuum pump passes through the filter. As the turbovacuum pump impeller rotates, the gas enters the hole in the middle of the impeller and accelerates the pressurization through the radial rotation of the impeller. Generally, one multi-stage turbo vacuum pump and two single-stage turbo vacuum pumps are used together to meet the vacuum requirements of different suction points of the paper machine.

Paper machine, as the name implies, is a kind of equipment used for papermaking, and the emergence of this equipment brings great convenience to our lives, and what parts are composed of this magical equipment? In view of this, the paper machine manufacturer - Haitian Paper summarized a few points, I hope it can be helpful to you.

Paper machine common failure analysis

The performance of the paper machine control system is the premise of determining whether a paper machine can produce with high efficiency and high quality, and for a normal paper machine, in order to ensure its continuous high efficiency and high quality production, the maintenance of the transmission system is particularly important.

What is a slitter rewinder's cleaning device?

The slitter rewinder includes a rack equipped with a paper stock rack, a paper feeding mechanism, a rewinding station, a paper cutting tube station and a conveyor mechanism.

Routine maintenance measures for rewinders

A rewinder is a kind of papermaking equipment. After the paper passes through the equipment, it is made into finished paper and leaves the factory. At present, the use of AC drives instead of DC drives in equipment has become a development trend in the tissue processing equipment industry.

Corrugated beam steel guardrail

The project department has established a leading organization for safety management, and established and improved the safety production responsibility system of departments at all levels, and the responsibility is implemented to people

Paper machine basic classification

According to the needs of the copying process, the structure of the paper machine is diverse, generally composed of flowing, forming, pressing, drying, finishing, winding and transmission and auxiliary equipment and other supporting equipment.