JPH063498U - Anaerobic filter bed or septic tank of septic tank - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an inexpensive anaerobic filter tank or contact aeration tank of a septic tank that does not use screws at all and has excellent workability and does not leak water. [Analysis of a septic tank in which a porous member is provided on the bottom of a tank surrounded by side walls or a side wall and a partition wall on four sides with a space provided, and a filter medium is filled on the porous member, and a porous member is further provided on the filter medium. In a filter bed tank or a contact aeration tank, a pedestal 14 having a plurality of lower mounting pipes 15 provided side by side via a joint pipe 13 is placed in the middle portion of a rectangular tubular body with a space provided at the bottom of the tank 18,
A porous member in which the back surface of the frame body 17 of the porous member 3 having the frame body 17 provided around the frame 14 is fixed, the filter medium 7 is filled on the porous member 3, and the frame body 17 is provided around the upper surface of the filter medium 7. The frame 1 on the upper surface of the porous member 16 covered with the filter material 7.
A plurality of upper pressing pipes 8 abutting against the lower mounting pipe 15 are provided to face the lower mounting pipe 15, and the upper and lower pressing pipes 8 and 15 are connected to each other by the support pipe 5 via the upper and lower joint pipes 13.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an anaerobic filter bed tank or a contact aeration tank of a septic tank, and more particularly, to improvement of a support structure for a filter medium filled in the anaerobic filter bed tank or a contact aeration tank.

[0002]

[Prior art]

 Recently, a mesh (porous member) is installed at the bottom of the tank to prevent the filter medium from passing, and the filter medium is filled with a filter medium having a true specific gravity or an apparent specific gravity that is lighter or heavier than the stock solution. An anaerobic filter bed tank provided with a mesh through which a filter medium does not pass, or a contact aeration tank provided with an air diffusing pipe at the bottom of the tank below the above mesh is often used alone or in combination.

Conventionally, in order to fix the upper and lower net-like bodies in the tank, as shown in FIGS. 3 and 4, a plurality of L-shaped sections are provided on both side walls facing the tank bottom at a constant interval. The fixing piece of the above is fixed by penetrating the side wall with a screw, and a plurality of supporting members having an L-shaped long cross section are fixed by passing over a plurality of fixing pieces provided on both side walls, and the outer surface of the side wall from which the screw protrudes. Is subjected to overlay using a synthetic resin such as FRP, and the reticulated body is fixed to the upper surface of the support with a band. Then, while filling the upper surface of the mesh body with the filter medium, a plurality of fixing pieces having a substantially L-shaped cross section are fixed to the opposite side walls of the upper surface of the filter medium through the side walls by using screws, and are provided on the both side walls. A plurality of L-shaped supporters having a long cross-section are arranged and fixed on a plurality of fixing pieces, and the outer surface of the side wall from which the screw protrudes is overlaid using a synthetic resin such as FRP, and is attached to the upper surface of the supporter. Secure the net with a band.

[0004]

[Problems to be solved by the device]

 Further, in the above-mentioned conventional technique, since the screwing is indispensable for fixing the fixing piece, there is a risk that the filter medium may fall off due to corrosion of the screw when used for a long time. In addition, there is a risk of water leakage if the overlay is broken, because holes are drilled in the outer wall and fixtures are attached with screws, and the screws are overlaid with synthetic resin such as FRP. is there. Further, since these fixing work is performed in a narrow tank, it is a complicated work and requires a long time. An object of the present invention is to provide an anaerobic filter tank or a contact aeration tank of a septic tank which does not use any screws and has excellent workability and no water leakage at low cost.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a porous member provided with a space at the bottom of a tank surrounded by side walls or side walls and a partition wall on four sides, and a filter medium is filled on the porous member. In an anaerobic filter tank or a contact aeration tank of a septic tank provided with members, a plurality of lower mounting pipes 15 are provided side by side through a joint pipe 13 in the middle portion of a rectangular tubular body with a space at the bottom of the tank 18. The pedestal 14 is placed on the pedestal 14, and the back surface of the frame body 17 of the porous member 3 having the frame body 17 provided on the pedestal 14 is fixed, and the filter medium 7 is filled on the porous member 3, and the upper surface of the filter medium 7 is surrounded. A plurality of upper holding pipes 8 covered with a porous member 16 provided with a frame 17 and abutting the frame 17 on the upper surface of the multi-hole member 16 on the filter medium 7 are provided facing the lower mounting pipe 15, The technical means of connecting 8 and 15 with the support pipe 5 via the joint pipe 13 was taken. There.

[0006]

[Action]

 Further, according to the present invention, by the above-mentioned means, support pipes are erected in advance at a plurality of positions of the lower presser pipe provided on the pedestal below the porous member via joint pipes, and the filter medium is filled and the porous member is placed on the filter medium. Is mounted to cover the front surface, and a plurality of upper pressing pipes arranged on the porous member are connected to a plurality of positions of the supporting pipe through joint pipes.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. Reference numeral 18 denotes a septic tank which is made of a synthetic resin such as FRP and has an anaerobic filter bed tank 19 and a contact aeration tank 20 provided inside the tank by a plurality of partition plates 2. Reference numeral 14 denotes a pedestal in which a pipe made of a synthetic resin such as vinyl chloride is formed into a rectangular shape using a connecting pipe in accordance with the shape of the tank 19 or 20, and the support pipes 4 are erected at four corners and in appropriate places. A plurality of lower pressing pipes 15 made of a synthetic resin pipe such as vinyl chloride are connected to the horizontal pipes 6 facing each other through a joint pipe 13 to the horizontal pipes 6 facing each other. 3 is a mesh-like porous member made of synthetic resin or the like that does not allow the filter medium 7 to pass therethrough, and a synthetic resin frame is formed around the member 3. The periphery of the porous member 3 below the frame 17 is placed on the frame 14, and the frame 17 and the frame are fitted and fixed by a fitting method.

A plurality of support pipes 5 formed by a pipe made of synthetic resin such as vinyl chloride that penetrates the mesh of the porous member 3 and rises above the tank 19 or 20 are provided at appropriate positions of the lower presser pipe 15. It is erected. Reference numeral 7 is a filter medium which is lighter or heavier in true specific gravity or apparent specific gravity than the stock solution formed of synthetic resin, and the filter medium 7 is a space composed of the porous member 3 and the four side walls 1 of the tank, or the porous member 3 and the side wall 1. And the space consisting of the partition wall 2 is filled. Reference numeral 16 denotes a porous material which is placed and fixed on the filled filter material 7, and is provided with a frame body 17 around the filter material 7 to form a mesh-like body made of synthetic resin or the like that does not allow the filter material 7 to pass therethrough. Reference numeral 8 denotes a plurality of upper presser pipes that are placed in parallel with the lower presser pipes 15 provided on the gantry 14 across the opposing frame bodies 17 of the porous member 16, and the upper presser pipes 8 are the lower presser pipes 15. It is connected via a joint pipe 13 to a support pipe 5 which is erected upright.

In the above embodiment, since it is not necessary to use screws or the like for fixing the fixing piece, there is an advantage that the corrosion resistance of parts, the water tightness of the tank, etc. are improved. In addition, there is an advantage that the assembly work is improved because there is no fixing work at the time of assembly and the dimensional flexibility is effective.

[0010]

[Effect of device]

 According to the present invention, a pedestal in which a plurality of lower mounting pipes are provided side by side through joint pipes is mounted on the bottom of an anaerobic filter tank or a contact aeration tank of a septic tank at an intermediate portion of a rectangular tubular body at intervals. Then, the back side of the frame member of the porous member having the frame member provided around the frame is fixed, the filter member is filled on the porous member, and the upper surface of the filter member is covered with the porous member provided with the frame member around the filter member. Since a plurality of upper pressing pipes that come into contact with the frame on the upper surface of the porous member are provided so as to face the lower mounting pipes, and the upper and lower pressing pipes are connected by the support pipes through the joint pipes, screws are used. It is possible to provide an anaerobic filter tank or a contact aeration tank, which is a septic tank with excellent workability and no water leakage, without using it at all.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

2 is a partially enlarged perspective view of FIG.

FIG. 3 is an enlarged perspective view showing a conventional embodiment.

FIG. 4 is a partially enlarged sectional view of FIG.

[Explanation of symbols]

 1. Side wall 2. Partition wall 3. Porous member 4. Support tube 5. Support tube 6. Horizontal pipe 7. Filter material 8. Upper presser tube 9. Fixed piece 10. Support 11. Band 12. FRP 13. Fitting tube 14. Stand 15. Lower presser tube 16. Porous member 17. Frame 18. Septic tank 19. Anaerobic filter bed tank 20. Contact aeration tank 21. Air diffuser

Front page continuation (72) Inventor Atsushi Hibino 1250 Shimoeden, Shimodate, Ibaraki Pref., Inside the Yuki factory, Hitachi Chemical Co., Ltd. Inside the Yuki factory

Claims (2)

[Scope of utility model registration request] 1. A septic tank in which a porous member is provided at a bottom portion in a tank surrounded by side walls or side walls and a partition wall on four sides with a gap, and a filter material is filled on the porous member, and a porous member is further provided on the filter material. In an anaerobic filter bed tank or a contact aeration tank, mount a base on which a plurality of lower mounting pipes are placed side by side through joint pipes in the middle of a rectangular tubular body with a space at the bottom of the tank The back surface of the porous member having a frame member provided around the frame member is fixed, the filter member is filled on the porous member, and the upper surface of the filter member is covered with the porous member provided with the frame member around the filter member. Anaerobic filter tank or contact of a septic tank, characterized in that a plurality of upper presser pipes that come into contact with the frame body of the above are provided so as to face the lower mounting pipes, and the upper and lower pressurizer pipes are connected by a support pipe through a joint pipe. Aeration tank. 2. The anaerobic filter bed tank or contact aeration tank of the septic tank according to claim 1, wherein the porous member is a net-like body that does not pass through a filter medium.