JPS592808Y2 - "Filter" device - Google Patents

Description

[Detailed description of the invention] This invention provides a filter that can withstand continuous use for a relatively long period of time while preventing clogging of the wave layer through its self-cleaning action, mainly in a type of filter that performs the filtration action using a water head difference. This is what I am trying to do.

Generally, in filters, when raw water with impurities suspended in it passes through the wave layer, some of the impurities adhere to the wave layer, and when used for a long period of time, the wave layer becomes clogged and the filtration action is significantly inhibited. Therefore, backwashing must be performed at appropriate time intervals to eliminate clogging of the wave layer, which not only reduces the operating efficiency of the filter but also damages other mechanical equipment. Since this also affects the efficiency of machine operation, there is a strong desire to improve it.

According to this invention, backwashing is not required for a relatively long period of time, and therefore continuous use is possible without interrupting the filtration action, which greatly improves the utilization efficiency of this type of filter. The details will be explained below according to the illustrated embodiment.

In the figure, 1 is a filter main body, and this filter main body 1
The interior is divided by a partition wall 2 into a raw water chamber 3 and a filtered water chamber 4.

A pocket portion 5 protruding toward the filtration chamber 4 is formed approximately in the center of the partition wall 2, and the wall surface of the pocket portion 5 facing the filtration chamber 4 is a wave layer that tilts forward toward the raw water chamber 3. 6, and on the raw water chamber 3 side of the pocket portion 5 there is a looper composed of a large number of fin pieces 7 whose lower ends protrude toward the raw water chamber 3 side in substantially the same plane as the partition wall 2. form 8.

A cleaning water spout 9 for preventing clogging is provided in the upper part of the pocket portion 5, and this spout 9 opens toward the wave layer 6.

The washing water for the spout 9 may be taken from the water filtration chamber 4 or may be obtained from another source of clean water.

A backwash water spout 10 is opened in the filtration chamber 4 facing the wave layer 6, and a backwash water spout 10 is connected to the filtration chamber 4 by a pipe 12 from a backwash pump 11. It is designed to take in water and send backwash water to perform backwashing as usual.

The cleaning water is supplied to the cleaning water spout 9 by the pump 1.
1 to the jet port 10 via a pipe 13 branched from the middle of the pipe 12, and a flow rate regulating valve 14 is provided in the middle of the pipe 13.

In the above configuration, a contaminated liquid in which impurities are suspended, that is, raw water 15 is injected into the raw water chamber 3 through the raw water injection pipe 16, and due to the water head difference, this raw water 15 passes through the wave layer 6 and enters the filtration chamber 4. The impurities that have been filtered out by the wave layer 6 during this period are filtered out by the wave layer 6 before flowing into the raw water chamber 3. Due to the fact that the water is tilted and the cleaning water is supplied from the spout 9 toward the wave layer 6, it descends without clogging the wave layer 6, and sedimentation occurs in the raw water chamber 3 from the pocket portion 5. In addition, in this invention, due to the presence of the looper 8, foreign substances having a relatively large specific gravity are separated and settled when passing through each fin piece 7 of this looper 8, and are separated from this surface. This also serves to reduce the burden on the wave layer 6.

Elimination of clogging of the wave layer 6 that inevitably occurs due to long-term use is carried out by spraying backwash water onto the wave layer 6 from the backwash water spout 10, as in a general filter.

[Brief explanation of drawings]

The drawing is a vertical sectional view of one embodiment of this invention. In the figure, 1... the filter body, 2...
...Partition wall, 3... Raw water room, 4...
Filtration chamber, 5... pocket part, 6... wave layer, 7... fin piece, 8... looper,
9: Washing water spout; 10: Backwash water spout.

Claims (1)

[Scope of utility model registration request] A pocket part protruding toward the filtration chamber side is formed on the partition wall that divides the filter body into a raw water chamber and a filtration chamber, and the wall surface of this pocket part facing the filtration chamber is tilted forward toward the raw water chamber. At the same time, a louver is formed on the raw water chamber side of the pocket part in substantially the same plane as the partition wall, and a cleaning water spout for preventing clogging is provided at the upper part of the pocket part. A filter that is installed facing the wave layer.