Spiral compression device for straw

Abstract

The invention discloses a spiral compression device for straw. The spiral compression device comprises a barrel, a spiral shaft, a check valve arranged on the outer side of one end of the barrel and a driving motor arranged on the outer side of the other end of the barrel and used for driving the spiral shaft to rotate. The barrel comprises a feeding section, a compression section and a material plug section which are communicated in sequence, a plurality of through holes are formed in the compression section, and the density of the through holes is gradually increased in the straw conveying direction; the spiral compression device further comprises a feeding elephant trunk communicated with the feeding section, a sealing cover annularly arranged on the outer side of the compression section and a sealing mechanism arranged between the other end of the barrel and the spiral shaft. The sealing cover is provided with an exhaust port and a liquid outlet. The spiral compression device further comprises a switch valve used for controlling opening and closing of the liquid outlet. And the check valve and the switch valve are used for blocking one end of the barrel and the liquid outlet respectively when the current of the driving motor is reduced to a set value. By means of the spiral compression device, continuous compression and discharging of straw can be achieved, and meanwhile potential safety hazards existing in a workshop during steam reverse spraying can be avoided.

Description

technical field [0001] The invention relates to a screw compression device for straw. Background technique [0002] The existing screw compression device for straw relies on the reduction of the volume of the pitch space, so that the straw raw material is gradually compressed along the conveying direction, and the compressed straw raw material forms a straw material plug at the end of the screw. As the straw material is propelled continuously, the straw material plug is continuously formed, and the straw material plug at the front end is further pushed into the tubular reactor, which can not only continuously push the straw material under normal pressure into the reactor, but also use the straw material plug. Ensure the tightness of the feed port under the pressure condition of the reactor. [0003] In actual production and operation, due to uneven or interrupted incoming materials, screw shaft wear, check valve failure, etc., the short-term reverse injection of steam in th...

AI Technical Summary

Problems solved by technology

[0003] In actual production and operation, due to the influence of uneven or interrupted incoming materials, screw shaft wear, check valve failure and other conditions, the steam in the pressure chamber of the tubular reactor will be temporarily back-sprayed. Spraying and back-spraying steam not only damage the workshop environment, but also pose safety hazards

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