Method for monitoring blockage status of mechanical filter

Abstract

The invention provides a method for monitoring the stoppage of mechanical filter, which at least contains the following steps: when the inlet valve is close and the mechanical filter is not at work, measuring the maximum value of dynamic pressure in liquid inlet pipe and the value of static pressure in liquid outlet cavity, the former minus the latter being equal to the resistance value of total stoppage; when the inlet valve is open and the mechanical filter is at work, measuring the value of pressure in liquid inlet cavity and the value in liquid outlet cavity, the former minus the latter being equal to the real resistance value, the real resistance value being divided by the resistance value of total stoppage to obtain the value of chocking-up degree, comparing which with a reference value to confirm the stoppage. With the monitor method, the stoppage state of mechanical filter can be monitored continuously and precisely, and thus people can control the mechanical filter actively according to the stoppage state.

Description

technical field

[0001] The invention provides a method for monitoring the operation of a mechanical filter, in particular a method for monitoring the clogging of the mechanical filter. Background technique

[0002] In industrial production and daily life, mechanical filters are often used for filtration. During the use of the filter, there is a cycle of "normal use - gradually clogging - clogging - unclogging (backflushing) - normal use". Since the mechanical filter generally has a metal shell, it is difficult for people to observe the internal situation, so people have not found a timely and accurate monitoring method for the clogging of the mechanical filter, and can only conduct passive management and monitoring based on experience. control. Contents of the invention

[0003] The technical problem to be solved by the present invention is to provide a method for monitoring the blockage of the mechanical filter, so that people can judge the blockage of the mechanical fi...

Examples

Embodiment Construction

[0012] The present invention is further described below.

[0013] The measurement of the maximum dynamic pressure value, the static pressure value, the pressure value of the liquid inlet chamber of the mechanical filter, and the pressure value of the liquid outlet chamber of the mechanical filter is completed by a pressure sensor.

[0014] The determination of the complete blockage resistance value, actual resistance value, blockage degree value and blockage situation is completed by the microprocessor.

[0015] The working process of any mechanical filter can be simply divided into three parts: before filtration, during filtration (liquid passes through the filter medium), and after filtration. During the working process, the pressure change before and after filtration has a corresponding relationship with the degree of clogging.

[0016] When the liquid inlet valve is closed and the mechanical filter is not working, the pressure in the liquid inlet pipe is the maximum press...

technical field

[0001] The invention provides a method for monitoring the operation of a mechanical filter, in particular a method for monitoring the clogging of the mechanical filter. Background technique

[0002] In industrial production and daily life, mechanical filters are often used for filtration. During the use of the filter, there is a cycle of "normal use - gradually clogging - clogging - unclogging (backflushing) - normal use". Since the mechanical filter generally has a metal shell, it is difficult for people to observe the internal situation, so people have not found a timely and accurate monitoring method for the clogging of the mechanical filter, and can only conduct passive management and monitoring based on experience. control. Contents of the invention

[0003] The technical problem to be solved by the present invention is to provide a method for monitoring the blockage of the mechanical filter, so that people can judge the blockage of the mechanical fi...

Examples

Embodiment Construction

[0012] The present invention is further described below.

[0013] The measurement of the maximum dynamic pressure value, the static pressure value, the pressure value of the liquid inlet chamber of the mechanical filter, and the pressure value of the liquid outlet chamber of the mechanical filter is completed by a pressure sensor.

[0014] The determination of the complete blockage resistance value, actual resistance value, blockage degree value and blockage situation is completed by the microprocessor.

[0015] The working process of any mechanical filter can be simply divided into three parts: before filtration, during filtration (liquid passes through the filter medium), and after filtration. During the working process, the pressure change before and after filtration has a corresponding relationship with the degree of clogging.

[0016] When the liquid inlet valve is closed and the mechanical filter is not working, the pressure in the liquid inlet pipe is the maximum press...

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