Biological sample liquid nitrogen tank refrigerator

Abstract

The invention discloses a biological sample liquid nitrogen tank refrigerator which comprises a liquid nitrogen tank refrigerator body and two compressor refrigerating systems. The liquid nitrogen tank refrigerator body comprises an inner tank body, an outer tank body and a vacuum interlayer located between the inner tank body and the outer tank body; the liquid nitrogen tank refrigerator body further comprises a liquid nitrogen filling pipe for filling liquid nitrogen into the inner tank body; and each compressor refrigerating system comprises a condenser, a compressor, a condensation evaporator, a throttling device and an evaporative cooling coil, wherein the two evaporative cooling coils are wound on the inner wall of the inner tank body in a staggered mode. According to the biological sample liquid nitrogen tank refrigerator, liquid nitrogen refrigeration and mechanical compression refrigeration are combined, a vacuum heat insulation layer is used for heat insulation, and therefore the biological sample liquid nitrogen tank refrigerator has the advantages of being good in energy-saving effect and capable of ensuring safety of stored biological samples, the use mode is flexible, and application prospects are wide.

Description

technical field [0001] The invention belongs to the field of water washing equipment for bead steel wires, in particular to a water washing device for bead steel wire production. Background technique [0002] Bead wire is a wire plated with a material such as bronze, copper or brass and used to reinforce the bead of a tire. The wire ring made of bead wire and isolation rubber makes the tire tightly fixed on the rim, and the wire ring bears tension, compression, torsion and centrifugal force when the tire is running; the bead wire is used for various types of tires, including cars Tires, load-bearing tires, aviation tires, motorcycle tires and bicycle tires, etc. With the continuous increase of tire production, the demand for bead wire is also increasing, and its quality requirements are becoming more and more stringent; [0003] The bead wire needs to be processed in multiple processes in the manufacturing process. During the heat treatment process, the steel wire needs to...

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Problems solved by technology

[0003] The bead wire needs to be processed in multiple processes in the manufacturing process. During the heat treatment process, the steel wire needs to be washed multiple times. The existing washing devices are mostly water washing tanks. The steel wire is washed by immersing the steel wire in the washing tank. , which leads to the length of the washing tank being too long, which needs to occupy a long space. In the prior art, the length of the washing tank can be shortened by using guide wheels to change the path of the steel wire, but this method will cause the steel wire to continuously bend, and The bending angle is too large, because the carbon content of the steel wire in the processing process is higher, resulting in greater brittleness of the steel wire, and the way of continuously changing the direction of the steel wire through the guide wheel may easily lead to the breaking of the steel wire, which affects the subsequent processing of the steel wire

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