JPH07328326A - Apparatus for removing precipitate in excrement receiving tank - Google Patents

Abstract

PURPOSE:To remove earth, sand, and others mixed in excrement efficiently and hygienically. CONSTITUTION:A drawn tube 5 connected to a negative pressure tank 6 and a washing pipe 10 equipped with an ejector 11 are attached to a precipitate removing tank 1 which is installed in a receiving tank for collecting excrement and equipped with an excrement inlet 3 and outflow pipe 4 connected to the receiving tank with the ends opened to the bottom of the tank 1; a bubble-mixed current is ejected to the precipitate accumulated on the bottom of the tank to loosen it; and earth, sand, and others are sucked with stirring to be discharged by the drawn pipe 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing deposits such as sand and gravel in the receiving step of treating human waste and septic tank sludge.

[0002]

2. Description of the Related Art Raw urine and septic tank sludge (hereinafter referred to as human waste) are collected, carried into a treatment facility, put into a receiving tank, and then contaminated with cloth, paper, vinyl, etc. mixed with human waste. Items are separated and treated such as denitrification and nitrification. 2. Description of the Related Art As a receiving tank into which human waste is put, a system as shown in FIG. 2 has been generally used. That is, in the receiving tank A, the take-out pipe 12 is connected to the bottom portion, and the urine is sent to the pretreatment process through the crusher 13. Further, above the receiving tank A, a deposit removing tank 1 for receiving hard human waste and removing hard materials such as sand and gravel mixed in the human waste is installed.

The sediment removing tank 1 is provided with a urine input hole 2 in the upper portion and is formed in a slanted bottom portion. Inside the tank 1, a drawing pipe connected to a suction pump (not shown). Is provided through the opening 14, and an outflow pipe 4 having an upper end opened below the liquid surface of the tank 1 and a lower end opened into the receiving tank 1 is provided. The human waste that has been carried in by the vacuum car is put into the tank 1 through the feeding hole 3, and heavy substances such as sand mixed in the human waste settle at the bottom of the tank 1. Then, a person inserts the drawn pipe 15 into the bottom of the tank 1 to suck up and remove the sedimented sand and the like.

[0004]

However, in the method of removing the precipitate by the suction pump as described above, the extraction tube 5 is used.
The suction port was blocked by the solidification of the precipitate, or the fibrous substance was entangled in the suction port, and the removal operation was often interrupted or interrupted, which was very inefficient. Further, in order to remove the above-mentioned blockage, it is inefficient and unsanitary that only the reverse injection of the washing water into the drawing pipe or the direct manual work is required.

The present invention solves the above-mentioned drawbacks of the prior art, prevents clogging of the withdrawal pipe, and makes it possible to remove deposits easily and efficiently and hygienically. Is what you are trying to do.

[0006]

The structure of the present invention for achieving the above object will be described with reference to the drawings corresponding to the embodiments. In the deposit removal tank 1 equipped with the outflow pipe 4 to the receiving tank A,
A suction pipe 5 for depositing negative pressure suction means 6 and 7 and an air supply means 8 and a cleaning pipe 10 for injecting a mixed flow of water and bubbles at the bottom of the sediment removing tank 1 are provided. It is a feature.

[0007]

[Operation] Contaminants such as sand mixed in the human waste thrown into the sediment removal tank 1 settle down and accumulate at the bottom of the tank,
The liquid component in the upper layer flows down into the receiving tank A through the outflow pipe 4. When the vacuum pump 7 is operated and the negative pressure tank is made to function, the deposit accumulated on the bottom of the tank is sucked from the lower end of the drawing pipe 5 and discharged to the negative pressure tank 6. At the same time, if the valve of the air supply pipe 8 is opened, the fluidity is increased by mixing with the air, and the suction work is facilitated.

At this time, if the cleaning water is pressure-fed to the cleaning pipe 10, the air from the ejector 11 is mixed with the cleaning water to form a mixed air bubble, which is jetted toward the precipitate. As a result, the deposited sediment is loosened and stirred, and light fibrous substances, vinyl, etc. float up, and the loosened sand, gravel, etc. are sucked into the extraction pipe 5 and removed. Become.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a sediment removing tank installed on the upper part of a receiving tank for human waste, the bottom part of which is formed in an inclined mortar shape or the bottom of a ship, and a lid 2 is attached to the upper end part so as to be opened and closed. Is provided with an input port 3 for the like, and in the tank 1, an outflow pipe 4 whose lower end opens into the upper part of the receiving tank A (see FIG. 1) has its upper end opened immediately below the water surface of the tank 1 and stands upright. It is provided in a shape.

Numeral 5 is a drawn-out pipe for sucking contaminants such as sand and gravel settled at the bottom of the tank 1, the front end of which is opened at the bottom of the tank 1 and the base end of which is a negative pressure tank 6 equipped with a vacuum pump 7. It is connected to the. Further, an air supply pipe 8 for sucking air into the pipe is connected near the suction portion of the drawing pipe 5.

Further, 10 is sand, gravel, etc. accumulated in the tank 1.
A cleaning pipe that sprays water on a precipitate such as cloth or paper vinyl and stirs it. The tip is open to the bottom of the tank 1 and the base is connected to a source of cleaning water (not shown). Is
An ejector 11 for introducing air into the pipe is provided in the middle portion.

The apparatus of the present invention is constructed as described above, and the human waste transported by a vacuum car or the like is fed into the deposit removing layer 1 through the feeding port 3. Contaminants such as sand mixed in the human waste collected in the tank 1 settle down and accumulate, and the upper layer liquid component flows from the upper opening of the outflow pipe 4 and enters the receiving tank A from the lower opening. Will be washed away.

In order to remove the deposit accumulated on the bottom of the deposit removing tank 1, the vacuum pump 7 is operated, and the deposit is sucked from the lower end of the drawing pipe 5 by the negative pressure action so that the negative pressure tank It will flow into 7. At that time, since air is introduced from the suction pipe 8 into the vicinity of the suction port of the extraction pipe 5, the precipitates and the like sucked into the pipe 5 are mixed with the air, and the fluidity in the pipe is improved, so that the suction effect is improved. Will be increased.

In addition to the suction of the drawing pipe 5, the cleaning pipe
If the wash water is pumped to 10, the wash water merges with the air from the ejector 11 to form a mixed bubble flow, which is
Will be injected into the precipitate from the lower end. The sediment thus deposited is loosened and agitated, and the fibrous substance, vinyl, etc. float up. Therefore, the opening of the extraction tube 5 is not blocked by sucking the solidified substance of the precipitate, and the fibrous substance or vinyl in the precipitate is also prevented from being entangled, so that loosened sand, gravel, etc. Only the precipitate will be aspirated and removed.

[0015]

As described above, according to the present invention,
The precipitate removal tank is equipped with a drawing pipe and a washing pipe, and the precipitate is sucked and removed while spraying the mixed flow of bubbles from the washing pipe to the accumulated deposit, so that the precipitate is loosened and stirred. The fibrous substance, vinyl, etc. will be floated by agitation, which will prevent clogging of the drawn pipe due to the solidification of the precipitate and the entanglement of the fibrous substance with the suction opening. The removal work can be carried out smoothly.

Further, since the bubble-mixed water is jetted from the cleaning pipe, the loosening of the precipitate and the floating of the fibrous material are effectively performed, and the suction of the precipitate from the drawing pipe is performed in the negative pressure tank. And the inflow of air into the intermediate portion, the work of removing the precipitate can be performed efficiently and hygienically without direct manual work.

[Brief description of drawings]

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

FIG. 2 is a schematic view showing a conventional receiving tank.

[Explanation of symbols]

 1 Sediment removal tank 3 Human waste input port 4 Outflow pipe 5 Extraction pipe 6 Negative pressure tank 7 Vacuum pump 8 Air supply pipe 10 Cleaning pipe 11 Ejector A receiving tank

Claims (1)

[Claims] A sediment removal tank equipped with a human waste input port and an outflow pipe to the human waste receiving tank, a precipitation withdrawal pipe provided with suction means and air supply means by negative pressure, and a bottom portion of the sediment removal tank. A deposit removing device in a human waste receiving tank, characterized in that a cleaning pipe for injecting a mixed flow of water and bubbles is provided in the.