Filter high temperature performance test method of tunnel type sterilization dryer

Abstract

The invention discloses a filter high temperature performance test method of a tunnel type sterilization dryer. The filter high temperature performance test method includes a preset temperature rising period and a high temperature maintaining period. In the preset temperature rising period, a heater is controlled to perform continuous and uninterrupted heating on a filter so as to achieve preset target high temperature. The preset temperature rising period is standard time duration of high temperature performance testing of the filter in the tunnel type sterilization dryer so that the filter is enabled to meet the requirements of high temperature performance testing. Continuous and uninterrupted heating refers that no constant temperature phase control stopping heating is arranged in the preset temperature rising period so that temperature of the filter is enabled to continuously rise to preset target high temperature. The filter high temperature performance test method of the tunnel type sterilization dryer has advantages of being easy and convenient to control so that damage to performance of the filter can be avoided.

Description

technical field [0001] The invention mainly relates to the technical field of medicine and food packaging, in particular to a method for testing the high-temperature performance of a filter of a tunnel-type sterilization dryer. Background technique [0002] At present, after the filter in the tunnel-type sterilization dryer is installed on site, it needs to be tested for its high-temperature performance. The existing technical scheme mainly includes two stages, which are the predetermined heating period and the high temperature maintenance period, and the predetermined heating period It is a step-by-step temperature rise, and the temperature rise curve is in a step-up manner, such as figure 2 As shown, when the filter in the heating section heats up for the first time, it is divided into 5 stages; when the temperature rises to 60 degrees, it stays at a constant temperature for 90 minutes; when the temperature rises to 120 degrees, it stays at a constant temperature for 90 mi...

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Problems solved by technology

[0002] At present, after the filter in the tunnel-type sterilization dryer is installed on site, it needs to be tested for its high-temperature performance. The existing technical scheme mainly includes two stages, which are the predetermined heating period and the high temperature maintenance period, and the predetermined heating period It is a step-by-step temperature rise, and the temperature rise curve is in a step-up manner, such as figure 2 As shown, when the filter in the heating section heats up for the first time, it is divided into 5 stages; when the temperature rises to 60 degrees, it stays at a constant temperature for 90 minutes; when the temperature rises to 120 degrees, it stays at a constant temperature for 90 minutes; When the temperature reaches 250 degrees, keep the temperature for 90 minutes; heat up to the process production temperature (predetermined target high temperature, generally 320 degrees or 300 degrees) and then enter the high temperature maintenance period, and stay at the constant temperature for 90 minutes; the current staged heating (from room temperature to 320 degrees) although The time span is long; however, due to staying at one temperature point for a long time (for example, staying at a constant temperature of 180 degrees for 90 minutes), it will have a serious impact on the material properties of the filter, and will cause the ceramic colloid coated on the filter to produce particles , affecting the performance and service life of the filter

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