JP2946166B2 - Septic tank air diffuser piping - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe for a diffuser pipe in a septic tank, and more particularly to a structure for mounting a pipe for a diffuser pipe.

[0002]

2. Description of the Related Art Conventionally, this type of septic tank (buried type) 1 is formed in a horizontal cylindrical shape as shown in FIG. 5, for example, and a manhole 2 is provided on the upper side thereof so as to be openable and closable. Although not shown, the septic tank 1 thus formed is divided into a sedimentation separation chamber and an aeration chamber 3, and a lower end of the air pipe 4 is provided at a predetermined position below the manhole 2 of the aeration chamber 3. A receiving part 5 for fitting and fixing the fitting 4a in a fitting manner is attached. The receiving portion 5 is provided at the lower end 4 a of the air pipe 4.
Is formed of a tubular portion 5a and a mounting flange portion 5b, which are fitted to the bottom of the septic tank 1 via the mounting flange portion 5b.

In the receiving portion 5 formed at the bottom of the aeration chamber 3 as described above, an air pipe 4 composed of, for example, an environ tube is dropped from the manhole 2 side substantially vertically, and a predetermined height from the lower end thereof. The air diffuser 6 having one end closed horizontally is detachably mounted in a branched shape at the position, and the air diffuser 6 has several other holes through which air bubbles are ejected. Although not shown, the upper end of the air pipe 4 is connected to a valve 8 provided in the connection pipe 7 of the air pump.
The air pipe 4 arranged in this manner is provided so as to blow air bubbles from the diffuser pipe 6 into the wastewater to perform an aeration operation.

[0004]

However, in this conventional configuration, the air pipe 4 is formed of an embossed pipe or the like and is formed to be long, so that, for example, the air pipe 4 or the diffusion pipe 6 is replaced. When, for example, the lower end 4a of the air pipe 4 is to be inserted and fitted into the receiving portion 5 attached to the bottom of the aeration chamber 3, it is bent in a curved shape due to the resistance of waste water as shown by the broken line in the drawing. In addition, since the receiving portion 5 is provided on the bottom portion, the receiving portion 5 is blind and cannot be easily fitted and inserted. As another method, there is an automatic attachment / detachment device for a submersible pump. However, the device is too large and cannot be mounted when the space in the tank is small or the manhole is small.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and has a structure of an air diffuser pipe capable of easily setting an air pipe at a target position even in a blind work. The purpose is to provide.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned technical problems, the present invention extends downward from a diffuser pipe attached to the lower end of an air pipe, such as an air pipe, which is disposed substantially vertically in a septic tank. At the time of setting the extended pipe at the position to be attached set at the bottom in the septic tank, a guide wire is stretched between the set member attached at the set position and the manhole at the top of the septic tank. A diffuser pipe for a septic tank, wherein a guide fitting is attached to a lower end side of the air pipe so as to be movable along the guide wire, and a lower end of the air pipe can be set at a set member.

[0007]

According to the above construction, the lower end of the air pipe can be easily attached to the set member to be attached even in the case of blind work.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of a septic tank, FIG.
FIG. 3 shows a horizontal cross-sectional view of the mounting portion of the guide fitting, and at a predetermined position, for example, at the bottom of the aeration chamber 3 of the septic tank 1, a cylindrical portion 5a and a flange portion 5b are provided as in the conventional case. A receiving portion 5 (also called a set member) is attached. In addition, the air pipe 4 is formed in a long length by an enviable pipe or the like as in the prior art, and a three-way branch pipe 10 is attached to the lower end thereof. A diffuser pipe 6 having a hole extending therethrough is attached, and an extension pipe 11 of a predetermined length inserted and fixed to the receiving portion 5 is attached to a downwardly directed branch port 10b, and an end of the extension pipe 11 is attached to the end of the extension pipe 11. The blind lid 12 is fixed. The upper end of the air pipe 4 is connected to a valve 8 provided in the connection pipe 7 of the air pump via a connection flange 13.

The air pipe 4 thus formed is formed as follows in order to be easily attached to and detached from the receiving portion 5. First, a through hole 14 is provided at a predetermined position on the opening end side of the cylindrical portion 5a of the receiving portion 5, and one end of a guide wire 15 having a predetermined length is attached to the through hole 14, The other end of the guide wire 15 is, for example, wound and fixed to the valve 8 side.

A guide fitting 16 is attached to the extension pipe 11 extending below the air pipe 4. As shown in FIG. 3, the guide fitting 16 has a circular outer fitting portion 17 (approximately semi-circular mating type) externally fitted to the extension tube 11, and is bent from both ends of the outer fitting portion 17. It is formed by a clamping plate 18 extending outward. The outer fitting portion 17 of the guide fitting 16 formed as described above is fitted to the extension tube 11 and a spacer having a predetermined thickness, for example, a washer 19 is interposed between the tightening plates 18 so that the bolt 20 is used. By tightening, the guide fitting 16 is fastened and fixed to the extension tube 11 with an interval t between the fastening plates 18 at which the guide wire 15 can be inserted. In the state where the guide wire 15 is inserted through the interval t between the guide fittings 16 attached in this manner, the air pipe 4 is connected to the bottom receiving portion 5 with the extension pipe 11 inserted and fixed. The upper end is connected to the connection pipe 7 of the air pump via the connection flange 13.

In the work such as replacement of the air pipe 4 or the diffuser pipe 6 connected in this manner, the connecting flange 1
When the air pipe 4 is pulled up with the connection 3 disconnected, the extension pipe 11 provided at the lower portion of the air pipe 4 is removed from the receiving portion 5 provided at the bottom of the aeration chamber 3. In this state, the air pipe 4
Is pulled up, the guide wire 15 stretched between the receiving portion 5 and the valve 8 is inserted into the gap t between the tightening plates 18 of the guide fitting 16 attached to the extension tube 11. Therefore, the extension pipe 11 is pulled up along the guide wire 15. In this case, the upper end of the guide wire 15 can be released from the wound state and supported by hand, and the upper end of the guide wire 15 can be pulled out from the guide fitting 16. The bolt 2 of the guide bracket 16
By loosening 0, the guide fitting 16 can be removed from the extension pipe 11, and the upper end of the guide wire 15 is hooked to, for example, a connection pipe 7 of an air pump to replace the air pipe 4 or the air diffusion pipe 6. .

When the replacement operation is completed, the outer fitting portion 17 of the guide fitting 16 is again fitted to the extension portion 11 and the bolt 20 is tightened with the guide wire 15 positioned between the tightening plates 18. It is fixed to the extension pipe 11. When the air pipe 4 is pushed down in this state, the extension pipe 11 at the lower end portion of the guide pipe 1 is guided through the guide fitting 16.
5 and is lowered toward the receiving portion 5. Then, by moving the air pipe 4 in a substantially lowered state and slightly exploring it, the tubular portion 5a of the receiving portion 5 can be easily confirmed, and the extension tube 11 can be fitted into the tubular portion 5a.

As described above, the air pipe 4 or the diffuser 6
In the replacement work, the air pipe 4 composed of a relatively long tubing pipe or the like is pushed into the tank 1 filled with wastewater, and the extension pipe 11 at the lower end is fitted and fixed to the receiving part 5 provided at the bottom. The extension pipe 11 at the lower end of the air pipe 4 is connected to the receiving section 5 and, for example, a connection pipe 7 for an air pump on the manhole 2 side.
Guide metal 15 attached to a guide wire 15 stretched between
6, the air pipe 4 is significantly less bent by the resistance of the waste water, and the extension pipe 1 is connected.
The first side can be easily pushed down while being directed toward the receiving portion 5 to be attached, and can be easily fitted and fixed, thereby making it possible to save labor for replacement work.

In the above embodiment, the receiving portion 5 is provided at the bottom of the septic tank 1, but the present invention is not limited to this. For example, an angle-like set member And the guide wire 15 may be stretched over the set member.

In the above embodiment, the air pipe 4 is exemplified. However, as shown in FIG. 4, the invention is also applied to a level switch 21 for detecting a water level in the tank 1 attached to the purification tank 1, for example. The level switch 21 is attached to a distal end of a wiring cord 22 connected to a drain pump (not shown), and a weight 23 is attached to a predetermined position on the distal end of the wiring cord 22 so that a predetermined water surface is provided. For example, the inflow of the wastewater into the tank 1 is stopped at the illustrated water level a shown in FIG. 4 and the drain pump is operated in the state of the water level b to allow the inflow of the wastewater. However, since the level switch 21 is of a float type, the level switch 21 floats on the water surface in a predetermined range and moves, so that the water level cannot be checked accurately. However, one end of the guide wire 15 is attached to a predetermined position on the bottom of the septic tank 1, and the other end is attached to the manhole side, and a guide fitting similar to the above embodiment is attached to the wiring cord 22 on the upper side of the weight 23 as shown. By attaching the guide wire 15 to the guide fitting 24 so as to be movable, the floating movement of the level switch 21 can be regulated, and the set position can be reliably set. , Water level can be accurately detected.

[0016]

According to the present invention, as described above, the extension pipe extending downward from the air diffusion pipe attached to the lower end of the air pipe consisting of an air pipe and the like disposed substantially vertically in the septic tank is provided. At the time of setting the position to be attached to the bottom set in the septic tank, a guide wire is stretched between the set member attached to the set position and the manhole above the septic tank, and the lower end of the air pipe is set. By attaching a guide fitting so as to be movable along the guide wire on the side of the unit and by setting the lower end of the air pipe so that the position can be set, a relatively long work is required for replacing the air pipe or the diffuser pipe. The lower end of the air pipe is pushed into the tank filled with wastewater and the lower end is set and fixed to the set member provided at the bottom. Since it is movably connected to a guide wire stretched in between via a guide fitting, the air piping is significantly less deflected by the resistance of waste water, and is easily directed to the set member to be mounted. In addition to being able to be pushed down, the set can be easily fixed and the replacement operation can be performed labor-saving.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of a septic tank.

FIG. 2 is an enlarged view of an air pipe.

FIG. 3 is a horizontal sectional view of a mounting portion of a guide fitting.

FIG. 4 is an explanatory view showing another example of use of the guide fitting.

FIG. 5 is an explanatory diagram of piping of a conventional septic tank.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Septic tank 2 Manhole 4 Air piping 5 Receiving part 6 Air diffuser 15 Guide wire 16, 24 Guide metal fittings

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) C02F 3/00 E03F 1/00-11/00

Claims (1)

(57) [Claims] 1. A mounting object set at the bottom of the septic tank, the extension pipe extending downward from the air diffuser pipe attached to the lower end of an air pipe composed of an air pipe or the like disposed substantially vertically in the septic tank. At the time of setting the position at the position to be set, a guide wire is stretched between the set member attached to the set position and the manhole at the top of the septic tank, and moved along the guide wire to the lower end side of the air pipe. A pipe for a diffuser pipe of a septic tank in which a guide fitting is attached as much as possible so that the lower end of the air pipe can be set at a set member.