Device and method for cleaning capillary tube of separate measurement type thermometer

Abstract

The invention relates to the field of instrument manufacturing equipment, in particular to a device and method for cleaning a capillary tube of a separate measurement type thermometer. The device comprises a reagent can, wherein a liquid outlet pipe and an air inlet pipe are arranged on the reagent can, one end of the liquid outlet pipe is inserted into the reagent can, located below the liquid level of a cleaning agent and connected with a first filter, the other end of the liquid outlet pipe is connected with a capillary tube, and the reagent can is filled with the cleaning agent through a funnel. The device is characterized in that a liquid outlet pipe valve and a booster pump are arranged in the liquid outlet pipe sequentially, and a second filter is arranged between liquid outlet pipe valve and the booster pump; the capillary tube is connected with a waste liquid tube which is inserted into a waste liquid bottle. Compared with the prior art, the inner wall cleanness of the cleaned capillary tube is high, a basis is laid for the quality of a subsequent product, the potential quality hazard to the subsequent product can be avoided, the operation is convenient, the production efficiency is high, the production period is shortened, the cleaning agent for cleaning can be recycled, and the cost is reduced; the filters are arranged in a pipeline, so that particles in the cleaning agent can be prevented from blocking the capillary tube.

Description

technical field [0001] The invention relates to the field of instrumentation manufacturing equipment, in particular to a capillary cleaning device and method for an isolated thermometer. Background technique [0002] Capillary tubes are suitable for household air conditioners, refrigerators, freezers or high-precision instruments and high-precision medical instruments and other products. Among capillary products, copper capillary is the most widely used. This type of pipe has the characteristics of small outer diameter and small inner hole, and lubricating oil must be used for stretching. Because it is used in precision equipment, the cleanliness of the inner wall is strictly required: the moisture content does not exceed 0.1 g / m2, the oil content does not exceed 0.1g / m2, and the residue on the inner wall does not exceed 0.2g / m2, which poses a problem for the manufacturer. The traditional cleaning method has low production efficiency, long cleaning cycle, wasting cleaning a...

AI Technical Summary

Problems solved by technology

The traditional cleaning method has low production efficiency, long cleaning cycle, wasting cleaning agent, and the cleaning length of the capillary is short, generally only 3-5 meters can be cleaned, which greatly limits the use of isolation thermometers, and it is difficult to reach the inner wall Cleanliness use requirements often bring hidden dangers to the precision instruments after production, seriously causing the whole machine to be scrapped, wasting manpower and material resources

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