Sensor system for pressure difference type detecting filter blocking state

Abstract

The invention discloses a differential pressure sensor system to detect the blocking state of the filter, including the filter, the sensors set on the water entrance and exit of the filter and linkedwith identifying logic cell, the sensors producing stress variation under the action of water pressure, the identifying logic cell identifying if the filter is blocked according to the stress signal change, and outputting the corresponding information in control system or control cell. It can automatically and exactly prompt the user to change the filter.

Description

technical field [0001] The invention relates to a pipeline filter system, in particular to a water treatment pipeline filter system. Background technique [0002] In the current water treatment pipeline filtration system, especially in some small equipment systems that provide clean water or pure water, the filter will be replaced after filtering the sewage for a long time. At present, there are several methods for detecting the degree of contamination or clogging of the filter: [0003] The first one: replace it with personal subjective consciousness to think it is good or bad, which has high requirements for users, so it is difficult to promote. [0004] The second method: By calculating the total number of water passing through the filter, the filter is replaced when the total water flow reaches a predetermined value. However, even if the flow calculation is accurate in this method, when different water quality conditions are at the same flow rate, the filter will be pol...

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Problems solved by technology

[0003] The first method: use personal subjective consciousness to think that it is good or bad for replacement, which has high requirements for users, so it is difficult to promote

[0004] The second method: By calculating the total number of water passing through the filter, the filter is replaced when the total water flow reaches a predetermined value. However, even if the flow calculation is accurate in this method, when different water quality conditions are at the same flow rate, the filter will be polluted and The situation of clogging is also different, so this method is difficult to be widely used

[0005] The third method is to replace the filter according to the length of time it is used, but this method is only a rough calculation method. At the same time, when the water quality and water flow of different places are different, the pollution and clogging of the filter are very different. Therefore, this method cannot accurately detect the actual use of the filter

[0006] The fourth type: use advanced equipment and instruments to detect the filter by photoelectric method. This method needs to remove the filter and use the method of reflecting the light beam from the particles attached to the filter surface to detect it. Generally, it is only used in the laboratory, so not all users can do

[0007] Therefore, the general manufacturer reminds the user that the filter must be replaced after using about how many tons of water or how long it has been used. At the same time, it must change according to the water quality of the local water source, but the user does not know the water quality of the water source. Therefore, The whole grasp of the time to replace the filter is a vague concept, which makes the user at a loss

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