JPH0468037B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a cleaning device for an inlet nozzle for a small-sized combined treatment septic tank, which is interposed between an anaerobic filter bed and an aerobic filter bed in a small-sized combined treatment septic tank. It is.

[Background of the invention]

In conventional small combined treatment septic tanks, the partition wall that separates the anaerobic filter bed final tank (hereinafter referred to as the preliminary filtration tank) and the aerobic filter bed (hereinafter referred to as the aeration tank) has a diameter, for example. Will it be inserted through piping with a diameter of 100 mm or more? Alternatively, an opening of 100 mm or more is provided so that the wastewater in the preliminary filtration tank can flow into the aeration tank. However, with such a configuration, there is a problem in that it is difficult to obtain a highly efficient purification ability when a large amount of water flows into the filter tank at a time when the water is used in the filter tank rather than in the pre-filtration tank. Therefore, in order to eliminate this problem, an inflow nozzle is installed so that the open end of the inflow pipe that passes through the preliminary filtration tank and the aeration tank of the septic tank is located below the normal water level on the side of the preliminary filtration tank, and an inflow nozzle is installed on the side of the aeration tank. The open end is located near the inner bottom of the aeration tank, and a bypass pipe is further provided between the preliminary filtration tank and the aeration tank, the uppermost part of which is located at a higher position than the inflow pipe. We are proposing a flow rate adjustment device for treatment septic tanks.

However, with such devices, impurities adhere to the inner circumferential surface of the inflow pipe due to long-term use.
In particular, the inner surface of the small-diameter inflow nozzle provided in the inflow pipe is likely to become clogged due to adhesion of impurities, which causes problems such as inability to perform effective purification.

[Object of the Invention] The present invention has been made to solve these problems, and includes a float floating on the flow surface in the preliminary filtration tank and a brush integrated with the float, which improves the liquid level in the preliminary filtration tank. To provide a cleaning device for an inflow nozzle in a septic tank, which can wash the inner surface of the inflow nozzle by the operation of a brush linked to the operation of a float that floats with fluctuations.

[Embodiments of the invention]

The present invention will be explained in detail below based on embodiments shown in the drawings.

1 is a preliminary filtration tank in a small-scale combined treatment septic tank, and 2 is an aeration tank separated by a partition wall 3. At the inner bottom of this aeration tank 2 is a shelf for stacking and holding contact materials (not shown). 4 is formed. Each treatment tank is provided outside the preliminary filtration tank 1 and the aeration tank 2, but since these processing tanks are not directly related to this embodiment, illustration thereof is omitted. Reference numeral 5 denotes an advection pipe passing through the partition wall 3, and at the end of the advection pipe 5 on the side of the preliminary filtration tank 1, there is an inflow pipe 7 in which a downward inflow nozzle 6 is located below the position of the advection pipe 5. , a riser pipe 8 rising above the position of the advection pipe 5 , a horizontal pipe 9 extending horizontally from this riser pipe 8 , and a horizontal pipe 9 extending horizontally from this riser pipe 8 .
A bypass pipe 10 extending downward from the end of the inlet nozzle 6 and approaching the upper and lower positions of the inflow nozzle 6 is connected thereto. Furthermore, at the aeration tank side end of the advection pipe 5,
An outflow pipe 11 extending downward from the shelf 4 described above is connected thereto. Reference numeral 12 denotes a float floating on the liquid surface in the preliminary filtration tank 1, and a core rod 13 is attached to this float 12, which passes through the riser pipe 8 and the inflow pipe 7, and further penetrates into the inflow nozzle 6. Further, a brush 14 is provided at the end of the core rod 13 protruding from the inflow nozzle 6. 15
indicates a core support portion which is provided integrally with the horizontal tube 9 and supports the core rod 13 so as to be movable up and down.

The above is the configuration of this embodiment.Next, the operation will be described.The liquid in the preliminary filtration tank 1 passes through the inflow nozzle 6, the inflow pipe 7, the advection pipe 5, and the outflow pipe 11, and then flows into the aeration tank 2. It is normally stable between water levels A and B. However, if the inflow nozzle 6 becomes clogged, or if washing water, bath water, cooking waste water, etc. are drained all at once, the water level in the preliminary filtration tank 1 will rise rapidly, and for example, the water level will rise to C and D. Displace. Due to this displacement, the liquid in the preliminary filtration tank 1 flows into the aeration tank 2 via the bypass pipe 10, and as a result, the water level in the preliminary filtration tank 1 gradually falls.
The water level returns to between the normal water levels A and B. In this embodiment, a float 12 is provided which floats on the liquid surface of the preliminary filtration tank 1.
Since the brush 14 is provided on the core rod 13 attached to the core rod 13, when the float 12 moves up and down as the liquid level fluctuates, the brush 14 rubs the inner surface of the inflow nozzle 6 with this up and down movement. As a result, the inner circumferential surface of the inflow nozzle 6 is cleaned at appropriate times, so clogging of the inflow nozzle 6 can be prevented.

Therefore, according to this embodiment, the inside of the inflow nozzle 6 can be cleaned by utilizing the fluctuation of the liquid level in the preliminary filtration tank 1, so that clogging of the inflow nozzle, which is a concern due to long-term use, can be avoided. This has the effect of being able to prevent accidents without requiring power or human power.

[Summary of the invention]

As described above, the present invention provides an anaerobic filter bed final tank 1
and an aerobic filter bed 2, and the anaerobic filter bed final tank 1 is provided with an inflow nozzle 6 for guiding the liquid in the anaerobic filter bed final tank 1 to the aerobic filter bed 2. In the treatment septic tank, a float 12 floating on the liquid surface in the anaerobic filter bed final tank 1, a core rod 13 attached to the float 12 and loosely inserted into the inflow nozzle 6, and a core rod 13 attached to the core rod. hand,
As the float moves up and down, the inflow nozzle 6
This is a nozzle cleaning device for a small combined treatment septic tank equipped with a brush 14 for cleaning the inner peripheral surface of the tank.

〔Effect of the invention〕

Therefore, according to this nozzle cleaning device, the inside of the inflow nozzle 6 is cleaned at an appropriate time by utilizing fluctuations in the liquid level in the final tank 1 of the anaerobic filter bed, so that the inside of the inflow nozzle 6 can be cleaned even after long-term use. There are no problems such as clogging, and since the inlet nozzle is cleaned without using power or human power, it is convenient and time-consuming.

[Brief explanation of drawings]

The drawing is an explanatory diagram showing a nozzle cleaning device according to the present invention. 1... Prefiltration tank, 2... Aeration tank, 3... Partition wall, 4... Shelf, 5... Advection pipe, 6... Inflow nozzle, 7... Inflow pipe, 8... Standing pipe, 9... Horizontal pipe, 10... Bypass pipe, 11... Outflow pipe, 12
...Float, 13...Core rod, 14...Brush,
15... Core rod support part.

Claims (1)

[Claims] 1 The partition wall 3 between the preliminary filtration tank 1 and the aeration tank 2 is provided with an advection pipe 5 that penetrates the partition wall 3, and at the end of the advection pipe 5 on the side of the preliminary filtration tank 1, there is a part below the position of the advection pipe 5. An inflow pipe 7 in which a downward inflow nozzle 6 is located, a riser pipe 8 rising above the position of the advection pipe 5, a horizontal pipe 9 extending horizontally from this riser pipe 8, and this horizontal pipe 9. A bypass pipe 10 is connected to the advection pipe 5 which extends downward from the end thereof and approaches the upper and lower positions of the inflow nozzle 6. On the other hand, an outflow pipe 11 which extends below the shelf 4 is connected to the aeration tank side end of the advection pipe 5. A float 12 is suspended on the liquid surface in the preliminary filtration tank 1, and a core rod 13 that passes through the riser pipe 8, inflow pipe 7, and inflow nozzle 6 is attached to the float 12. ,
A brush 14 is provided at the protruding end of the core rod 13 from the inflow nozzle 6, and a mandrel support member 15 is provided to support the core rod 13 integrally with the horizontal pipe 9.
A nozzle cleaning device for adjusting the flow rate in a small-sized combined treatment septic tank, characterized by being supported movably up and down.