Recently, we have received a problem about the difficulty of vacuum feeding, mainly in some materials with strong adhesion, such as amoxicillin, calcium pantothenate and so on. So today we will analyze and solve such problems.
Huaquan dry granulator is equipped with vacuum feeders mainly including Beijing Changfeng Jinding and Sweden piab. Both feeders use vacuum negative pressure. It works by sucking powder materials. They must maintain a good seal when generating negative pressure. Once any sealing ring or accessories are not installed properly and cause air leakage, the negative pressure will be greatly reduced, so when the feeder is working When it is abnormal, the installation problem is firstly eliminated.
Suction difficulty is common, and the filter efficiency of the feeder is not high. The filters used by Changfeng Jinding and piab are different, and the solutions are also different:
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Beijing Changfeng Jinding's vacuum feeder adopts stainless steel metal titanium rod filter element. Special attention is paid to its cleaning method. Special cleaning tools and cleaning methods are required. I found it in the manual. Here is a screenshot of the manual for your reference. The picture comes from the instruction manual of Beijing Changfeng Jinding Vacuum Feeder.
in the picture This filter is a titanium rod filter element. Its minimum pore size can be selected. Generally, the default filter is 3um. If the installation is correct, the cleaning process is correct, but the suction capacity is still not up to the rated expectation. Consider replacing the filter here. The larger the filter aperture, the greater the air flow, but the dust pollution is also serious, generally 5um is not very obvious, 10um is more obvious.
2. Sweden's piab vacuum feeder should pay attention to whether its filter element needs to be replaced regularly or in advance according to the frequency of use. The following picture is taken from the piFLOW®fc manual (FC.P100.PR1.51.3.CA.0.QSS. 0.CN)
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