Pearlite drying and filling system

Abstract

The invention belongs to the field of pearlite filling, and particularly relates to a pearlite drying and filling system. The pearlite drying and filling system comprises a pearlite filling tank, thepearlite filling tank is provided with a base, the base is provided with a low-temperature storage tank in a communicating manner through flow dividing pipes, and the base is fixedly connected with adraught fan. One end of the draught fan communicates with the top of the pearlite filling tank through a filtering mechanism, a dehydrator is arranged between the filtering mechanism and the pearlitefilling tank, the other end of the draught fan communicates with the base through a heating pipe, and a nitrogen input pipe is arranged between the draught fan and the heating pipe in a communicatingmanner. By arranging the filling system for cyclic drying, cyclic drying work is conducted on the low-temperature storage tank and the pearlite filling tank before the vacuumizing procedure of the device is conducted, the drying effect of a vacuum interlayer of the pearlite low-temperature storage tank is guaranteed, meanwhile, the water content of pearlite is effectively reduced, the vacuumizingefficiency of the device is improved, and the service life of the device is prolonged.

Description

technical field [0001] The invention belongs to the field of pearlite sand filling, in particular to a pearlite sand drying filling system. Background technique [0002] Pearlescent sand is a kind of porous, white, granular loose material made of acidic volcanic glassy lava after crushing, preheating, and roasting expansion. It has small capacity, low thermal conductivity, good chemical stability, non-combustible, non-toxic Toxic, odorless, sound-absorbing and other characteristics, mainly used in the construction of large-scale ultra-low temperature thermal engineering insulation layer, such as oxygen air separation unit, natural gas, liquid hydrogen, liquid nitrogen, liquid oxygen refrigerated transport vehicles and ships, etc. With the continuous popularization of the application of pearlite, the deficiencies in the actual filling process of pearlite need to be dealt with and improved urgently. [0003] In the prior art, since pearlite has extremely low thermal conductiv...

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Problems solved by technology

[0003] In the prior art, since pearlite has extremely low thermal conductivity and strong water absorption at the same time, pearlite is prone to moisture absorption in the actual filling process, and the moisture content of pearlite affects the thermal insulation performance of pearlite One of the biggest factors is that once the pearlite sand filled into the insulation interlayer does not remove moisture well, it will bring great difficulties to the subsequent vacuuming process, making it difficult for the vacuum powder insulation layer to have good insulation performance at low temperatures. In this way, the use requirements of the equipment cannot be met, and the service life of the equipment is reduced.

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