Two-stage dry-type gas filtering tank body respirator device and cleaning method thereof

Abstract

The invention discloses a two-stage dry-type gas filtering tank body respirator device and a cleaning method thereof. The two-stage dry-type gas filtering tank body respirator device comprises a shell, a coarse filtering disc located at the top part of the shell and a tank connecting pipe located at the bottom end of the shell, wherein breathing holes are arranged on the coarse filtering disc; thetwo-stage dry-type gas filtering tank body respirator device further comprises microporous membrane filter elements, a steam heating coil and a vacuum breaking respirator; and the microporous membrane filter elements are arranged in the shell. According to the invention, by adoption of two-stage air filtration, the interception efficiency on microorganisms is high, and the air sterilization requirements of air inlet sterilization and aseptic packaging in a humid environment and a high-temperature environment can be met; through arrangement of the steam heating coil to heat air in the shell, dehumidified air is subjected to secondary purification through a purifier, so the degerming effect is achieved; and through arrangement of the vacuum breaking respirator capable of realizing automaticswitching, the vacuum state in the tank can be rapidly broken, so a tank body and a filtering device are protected.

Description

technical field [0001] The invention relates to the technical field of food chemical equipment, in particular to a two-stage dry gas filter tank respirator device and a cleaning method thereof. Background technique [0002] At present, many occasions in modern industrial production, such as pharmaceutical production, aquatic product processing, fruit and vegetable juice processing, plant extraction, beer production, chemical manufacturing, etc., will involve the entry and discharge of atmospheric pressure sealed storage tanks or container materials. . The rise or fall of the liquid level of the material in the sealed container will naturally involve the entry or discharge of outside air, so as to maintain the pressure balance in the container storage tank. In order to ensure the stability of the process and product stability, an air filter device is usually installed on the top of the sealed container storage tank to filter the air. This filter device is usually also called...

AI Technical Summary

Problems solved by technology

However, in the gas filtration used in liquid food, pharmaceutical processing, and chemical industry production, the gas contains both humidity and volatile aromatic substances. It is difficult to find a material with stable performance and suitable for non-dehumidified gas with complex components. filter element;

[0005] Second, the usual CIP in-situ cleaning process is not suitable for cleaning membrane cores. Frequent use of acid and alkali cleaning and chlorine-containing disinfectants for membrane core disinfection can lead to rapid attenuation of filter membrane performance

In this way, the filter membrane cannot be effectively cleaned and disinfected by CIP

Membrane pollutants caused by filter membrane interception cannot be effectively removed and biological membrane clogging caused by microbial contamination is inevitable, which directly leads to a rapid decline in membrane permeability and filtration efficiency, and the final result is that the membrane core Early scrapping and frequent replacement of membrane cores will inevitably lead to high expenses;

[0006] Third, most of the respirators are installed at high altitude on the top of the material tank. Every time the filter element is disinfected and disassembled, it needs to be operated at high altitude, which is labor-intensive, time-consuming, and at the same time, the risk of personal safety is extremely high;

However, in certain cases, such as in the operation of hot material tanks, when the material liquid in the material tank is emptied, the material tank is cleaned by CIP process with cold water without breaking the vacuum, so that the hot air in the tank is condensed immediately. Vacuum, under the combined effect of the suction formed by the vacuum and the atmospheric pressure outside the tank, it is very easy to cause the membrane core of the air purifier to collapse or the tank body to sag inward, and even cause the tank body to be scrapped

In order to avoid the above situation, most factories open the manhole in advance to break the vacuum or use a vacuum breaker when the material tank is at a low level. Although this can prevent the collapse of the purifier membrane core or the collapse of the material tank, however, Such an operation will cause some unpurified gas to enter the material tank and contact with the product, which will destroy the overall air purification effect in the material tank and may cause pollution in the tank

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