Low-energy-consumption zero-emission support roller machine variable-frequency vacuum environment-friendly system

Abstract

The invention discloses a low-energy-consumption zero-emission support roller machine variable-frequency vacuum environment-friendly system, which comprises a vertical cylindrical filter, wherein an air suction pipeline arranged at one end of the vertical cylindrical filter is used for connecting a support roller machine; the other end of the vertical cylindrical filter is divided into two paths through a first pneumatic butterfly valve; one path is sequentially connected with a primary roots pump and a secondary roots pump; the other path is connected with the secondary roots pump through a second pneumatic butterfly valve; the secondary roots pump is connected with a silencer used for lowering the exhaust noise of the environment-friendly system through a temperature sensor. The originalwater pump energy consumption can be reduced by 40 percent; the system reliability is improved; the zero emission and environment-friendly effects are achieved; when the air quantity of the support roller machine caused by environment temperature rise is increased, the air inlet opening temperature of the pump can be automatically reduced; the constant extraction speed and the vacuum degree are maintained; the problems of machine halt water return and scale accumulation are solved; the noise pollution is effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of vacuuming systems, and in particular relates to a low-energy-consumption and zero-emission roller machine frequency conversion vacuum environmental protection system. Background technique [0002] The application of roller machine in paper mills is a technological procedure to remove the moisture in the paper products when the paper pulp is uniformly treated and contains a large amount of moisture. The vacuum device used in the roller machine plays a decisive role in the quality and quantity of paper, speed and energy consumption. The traditional roller machine vacuum device is designed as a combination of "vertical cylindrical filter + water ring vacuum pump". In use, the device has low efficiency and high energy consumption (vehicle speed 1250 / min, 1 water ring vacuum pump, 185kw / set) The internal circulating water of the water ring vacuum pump is greatly affected by the ambient temperature. With the i...

AI Technical Summary

Problems solved by technology

The traditional roller machine vacuum device is designed as a combination of "vertical cylindrical filter + water ring vacuum pump". In use, the device has low efficiency and high energy consumption (vehicle speed 1250 / min, 1 water ring vacuum pump, 185kw / set) The internal circulating water of the water ring vacuum pump is greatly affected by the ambient temperature. With the increase of the ambient temperature, the circulating water in the pump is prone to occur inside the vacuum pump, and the pumping speed and vacuum pressure decrease, resulting in uneven dehydration of the paper, paper breakage, pulp rejection, etc. The situation that affects the quality of paper; without noise reduction measures, the noise of the device may even reach more than 88 decibels

Water is directly discharged as the sealing liquid for vacuuming, which increases the cost of sewage treatment (vehicle speed 1250 / min, water distribution ring vacuum pump discharge 14m 3 / h Taiwan)

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