JP2016037721A - Contaminant and waste removal device for manhole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a contaminant and waste removal device for a manhole that removes contaminants and wastes that flow into a manhole without getting into the manhole, thereby resolving problems such as frequent pump failure at a manhole pumping station caused by a towel, diaper or other large-sized waste getting caught in a pump blade, as well as risks and accidents caused by harmful gases generated in a manhole.SOLUTION: The device is inside an existing auxiliary inflow pipe 5, and detachably installed with a detachable metal fitting 6 near an outlet of an inflow pipe 4. A material used is stainless steel that withstands corrosion. A tip of a spiny hook 8 is processed into a spiny form, so as to pierce through and hold contaminants and wastes that flow into a manhole.SELECTED DRAWING: Figure 1

Description

The present invention relates to removal of contaminants flowing into a manhole pumping station.

Conventionally, manhole pump stations have been designed so that there is no problem even if some foreign matter enters the pump itself. However, large foreign objects such as towels and disposable diapers are entangled in the wings of the pump, and there is a current situation that the pump does not function unless the pump is lifted and disassembled and removed. It is dangerous and difficult to maintain the pumps to lift many pumps that are over 100kg. In addition, due to the generation of toxic gas etc. in the manhole, the work inside is very dangerous and many accidents have been reported. Various apparatuses for removing foreign substances have been proposed from such a background.

JP2012-21386

The technique of Patent Document 1 is a type in which a basket-shaped object is installed. However, it can also catch foreign objects that can be crushed by the pump, which can quickly fill the basket. In addition, when the device is lifted, there is a possibility that the manhole must be entered. The present invention solves such problems of the prior art, captures only large contaminants, and does not hinder inflow. It is another object of the present invention to provide an apparatus that can be easily installed and pulled up without entering a manhole.

The present invention can be attached to and detached from the space between the outlet of the sewage inflow pipe of the manhole pump station and the auxiliary inflow pipe by lowering with a chain or the like from the upper part of the manhole, and has a spine-like hook as described above. This is a solution to this problem. Moreover, it is possible to easily adjust the length by using all screws, and it is possible to add a function of notifying when a certain amount of foreign matter has been reached.

The present invention can be used in a manhole pumping station.

Since the present invention can work without entering the manhole, the working time can be greatly shortened.

Since the present invention can be attached to an existing manhole pumping station, the effect at the manhole pumping station where the pump is frequently damaged due to impurities can be greatly expected.

This device can be added with a device for reporting when a certain amount of impurities is present, which is effective for maintenance.

It is a schematic diagram in the manhole It is AA 'sectional drawing of FIG. It is a side view of the state which attached the apparatus to the inflow subpipe. It is a top view of the state which attached the apparatus to the inflow subpipe. It is a front view which shows the structure of an apparatus. It is a side view which shows the structure of an apparatus.

This device includes an attaching / detaching portion, a limit switch built-in portion, a hook, a chain, and the like.

Next, embodiments of the present invention will be described in detail with reference to the drawings.

Figure 1 is a schematic diagram of the inside of a manhole. In the sewer manhole pumping station, it flows into the manhole body 1 from the inflow pipe 4, flows into the pre-swirl tank 15 from the lower part of the auxiliary inflow pipe 5, and is discharged from the manhole through the discharge pipe 3 by the pump 2.

As shown in FIGS. 1 and 2, the apparatus of the present invention is inside the existing auxiliary inflow pipe 5 and is detachably installed near the outlet of the inflow pipe 4. The material is made of stainless steel to withstand corrosion. Since the suspension position varies depending on the diameter of the inflow pipe, the size of the manhole, and the like, the height can be adjusted by adjusting all the screws 14 and tightening them with the long nuts 13. The tip of the spine hook 8 is processed into a spine to pierce and fasten the inflowing foreign matter.

3 and 4 are a side view and a plan view showing a state in which the apparatus is attached to the inflow auxiliary pipe. The detachable metal fitting 6 has a wide entrance so that it can be easily attached to the auxiliary inflow pipe 5.

5 and 6 are a front view and a side view showing the structure of the apparatus. The limit switch storage section 7 has a box shape, and by incorporating a limit switch inside, it is possible to notify when impurities accumulate. The eyebolt 10 is used for attaching a chain and raising / lowering the device. The barbed hook 8 has a structure like a fishhook for smooth insertion into the inflow auxiliary pipe. A sub-spine hook 12 processed into a U-order type is attached to the lower portion of the hook in order to catch foreign matter that scrubs between the hooks. Moreover, since it is rod-shaped, the deflection plate 11 is attached to the lower part to prevent deformation.

DESCRIPTION OF SYMBOLS 1 Manhole body 2 Pump 3 Discharge pipe 4 Inflow pipe 5 Sub inflow pipe 6 Detachable metal fitting 7 Limit switch storage part 8 Spinal hook 9 Cap nut 10 Eye bolt 11 Stabilizing plate 12 Sub spine hook 13 Long nut 14 Full screw

Claims (5)

This device is installed in the sewer manhole pumping station and traps contaminants that cause the pump to be blocked, and can be easily attached to and detached from the space between the outlet of the sewage inflow pipe and the auxiliary inflow pipe. A manhole contaminant removing device comprising a hook 2. The apparatus according to claim 1, wherein the auxiliary inflow pipe is attachable to and detachable via a hanging metal fitting. The apparatus according to claim 1, wherein the apparatus has a structure for trapping inflowing impurities with a barbed hook. The apparatus according to claim 1, wherein the length can be adjusted by using all screws according to the depth of the manhole. 2. The apparatus according to claim 1, which has a function of notifying that a certain foreign matter is captured.

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