Backwash filter
A filter and backwashing technology, which is applied in the field of filters, can solve problems that need to be proven in practice, and achieve the effect of eliminating costs
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[0012] The embodiments of the present invention will be further described below in conjunction with the above-mentioned drawings.
[0013] See figure 1 -4. The backwash filter has a barrel-shaped shell 3, the drain port at the bottom of the shell is connected with an openable and closable ball valve 7, and the inner bottom is evenly distributed with 4 pairs of upwardly extending guide walls 11, and the inner upper part is provided with a spacer ring 9. The top is open. The upper cover 1 is fixed on the top of the casing. The two ends of the upper cover are respectively a medium inlet A and an outlet B. The inlet A communicates with the casing to form a flow channel 10, and the upper cover is provided with a lower port 2 extending into the inner cavity of the casing. The housing is provided with a filter screen 8, which is positioned radially in the guide wall of the housing and can move up and down without rotating. The bottom of the filter screen is closed, and there is a spring...
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