JPS60257898A - Method and apparatus for removing precipitate in treatment tank such as purification tank - Google Patents

Abstract

PURPOSE:To make it possible to efficiently perform treatment, by injecting washing water to the precipitate of the receiving tank of a purification tank of excretion to wash said precipitate. CONSTITUTION:Sludge or raw excretion is withdrawn from purification tanks 1, 2 while a suction hose 18 is inserted into storage parts 1b, 2b from charging ports 1a, 2a. In this state, washing water such as tap water is supplied to the suction nozzle 20 provided to the leading end of the suction hose 18 from a water supply pipe 22 and a vacuum pump 15 is operated. By this mechanism, washing water is injected toward a precipitate P from a large number of jet orifices 21 provided to the leading end of the suction nozzle 20 to wash the precipitate P while a tank 3 is brought to a negative pressure state, and the precipitate P and washing water are sucked into the tank 3 from the suction nozzle 20 through the suction hose 18.

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) This invention is a method for removing sediment such as sand that has settled in the lower part of a septic tank or the like in which sludge, human waste, etc. are put in for purification treatment. The present invention relates to a method and an apparatus thereof.

(Prior art) In general, in septic tanks, etc., where sludge, raw human waste, etc. are put in for purification treatment, a part of the bottom is A sediment storage section is provided. Conventionally, sludge or the like from a septic tank or the like has been periodically removed, and an operator has entered the septic tank or the like to remove sediments such as sand that have settled in the storage section. For this reason, the work of removing the precipitate is very troublesome and requires a lot of time (,',p), and there are drawbacks such as dangers such as oxygen deficiency and inhalation of toxic gas.

(Problems to be Solved by the Invention) The present invention solves the deficiencies in the conventional methods as described above, and can easily remove sediment in a treatment tank such as a septic tank by suction without entering the tank. It is also an object of the present invention to provide a method and apparatus for removing sediment in a treatment tank such as a septic tank, which can efficiently process the suctioned sediment.

Composition of the Invention (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention aims to solve the above-mentioned problems by treating sand, ballast, etc. Washing water is injected onto precipitates such as sludge and solid matter to wash the precipitates, and then the precipitates are sucked into a separation tank together with the washing water and stored.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

Now, in FIG. 1, reference numerals 1 and 2 indicate septic tanks for purifying sludge and raw human waste, and input ports 1a and 2a for introducing sludge and raw human waste are provided in the upper part of the tank.

Sediment storage parts 1b and 2b are formed on the bottom of each septic tank 1 and 2 below the input ports 1a and 2a,
Sand, balas, scum, solid matter, etc. contained in the sludge and human waste put into the septic tanks 1 and 2 are stored in the storage parts 1b and 2b.
It is supposed to precipitate.

A substantially cylindrical closed tank 3 is disposed on the ground near the septic tanks 1 and 2 on a support base 4 with its axis inclined. As shown in Figure 1.2, on the outer periphery of the tank 3,
- Connections tT]5, 6, and 7.8 are provided at the center and lower end of the lower part, and at the lower end of the sides, respectively. or,
An outlet 9 is formed at the lower edge of the tank 3, and an opening/closing lid 10 is attached to the outlet 9 so that it can be rotated to open and close, and is always kept in the closed state by a tightening nondle 11. ing.

As shown in FIG. 1, an intake pipe 12 is connected to the connection port 5 at the upper end of the tank 3.
A drain container 14, a vacuum pump 15, and an on-off valve 16 are provided in the middle of the pipe 2 via a joint 13 and the like. Gas is discharged from the tank 3 by the operation of the vacuum pump 15, so that the inside of the tank 3 is always maintained at a negative pressure state.

The lower part of the tank 3 has a joint 1 at the connection +16 in the center.
7, a suction hose 18 is connected to the reservoir 11) from the inlets 1a, 2a of the septic tanks 1, 2.

It is designed so that it can be extended within 2b. An on-off valve 19 is connected to the end of the suction hose 18, and a suction nozzle 20 as shown in FIG. 4 is connected to the end of the suction hose 18.
is connected to the storage part 1b of the septic tank 1, 2 at the tip of the nozzle, and a plurality of injection holes 2 are connected to the tapered opening 20a20a for sucking the sediment P such as sand settled in the nozzle 2b.
] is formed, and this injection hole 21 constitutes an injection means.

Further, a connection port 23 for connecting a water supply pipe 22 such as a water pipe is provided on the outer periphery of the base end of the suction nozzle 20, and a side wall of the suction nozzle 20 is provided so as to connect the connection port 23 and each injection hole 21. A water passage 24 is formed therein. and,
Cleaning water such as tap water supplied from the water supply pipe 22 to the connection port 23 is injected from the injection hole 21 toward the sediment P,
The precipitate P is washed prior to suction, and the precipitate P is sucked into the tank 3 from the suction nozzle 20 together with the washing water, and is separated into solid and liquid within the tank 3. There is.

A return hose 25 is connected to the connection port 8 near the lower end of the side surface of the tank 3, and its tip can be extended into the septic tank 1.2. An on-off valve 27 and a water pump 2 are connected to the return hose 25 via a joint 26 etc.
8, a return hose 25 and a water pump 2 are provided.
8 etc. constitutes a feedback means. The liquid separated in the tank 3 is returned to the septic tank 1.2 by the operation of the water pump 28.

As shown in FIG. 2, a water level detection member 29, 30 consisting of a pair of electrodes, etc. is provided on the side surface of the tank 3.
The water level in the tank 3 is detected by the detection members 29 and 30.

When the water level in the tank 3 exceeds a predetermined high level and rises by 1, the water pump 28 is activated in accordance with the detection operation of the upper water level detection member 29, and the liquid in the tank 3 is pumped into the septic tank 1.2. When the water level in the tank 3 falls beyond a predetermined low level, the operation of the water pump 28 is stopped in accordance with the detection operation of the lower water level detection member 30.

A drain pipe 3 is provided at the lower end of the lower side of the tank 3.
1 is connected, and an on-off valve 32 is provided in the middle of the drain pipe 31. And this opening/closing valve 32
The liquid in the tank 3 can be drained from the connecting lower with the opening of the lid 10 opened, and then the opening/closing lid 10 is rotated to open by releasing the tightening handle 11, and the liquid inside the tank 3 is removed as shown in FIG. Take out the sediment P from the truck T from the outlet 9.
It is designed to be able to be discharged. Furthermore, as shown in Fig. 5, a receiving member 33 on which planks 32 are arranged radially is fixed inside the connecting lower, and when a pebble or the like is placed on this member 33, A filter is constituted by this receiving portion 33 and pebbles or the like.

Next, the operation of the precipitate removing device configured as described above will be explained.

Now, use the device of this example to create a septic tank].

When removing sediment P such as sand that has settled in the storage parts 1b and 2b in the septic tanks 1 and 2, first remove the sludge, human waste, etc. from the septic tanks 1 and 2, and then remove the sludge and human waste from the inlets 1a and 2a of the storage part] ,
l), Insert the suction hose 18 into 2'l). In this state, when cleaning water such as tap water is supplied from the water supply pipe 22 to the suction nozzle 20 at the tip of the suction hose 18 and the vacuum pump 15 is operated, the precipitate P is discharged from the numerous injection holes 21 at the tip of the suction nozzle 20. Washing water is injected towards the tank 3 to wash away the precipitate P, and at the same time, the inside of the tank 3 becomes a negative pressure state, and the precipitate P and wash water are sucked into the tank 3 from the suction nozzle 2o via the suction hose 18. Ru.

In this embodiment, a substantially cylindrical tank 3 is arranged with its axis inclined, and the mixture of the precipitate P and washing water flows through a connection port provided at the lower center of the outer periphery of the tank 3. 6 into the tank 3, solids with a high specific gravity in the mixture move to the outlet 9 at the lower end of the tank 3 due to their own weight, while liquids with a low specific gravity move there. Stay in. Therefore, the mixture drawn into the tank 3 is automatically separated into solid and liquid.

In this way, when the water level in the tank 3 rises and reaches a predetermined high level, the water pump 28 is activated based on the detection operation of one of the water level detection members 29. Thereby, the liquid separated in the tank 3 is returned to the septic tanks 1 and 2 via the return hose 25, and is discharged toward the precipitate P in the storage parts 1b and Zb. In this case, the suction nozzle 20' is pulled up from the sediment to bring the inside of the tank 3 to atmospheric pressure. Therefore, the precipitate P is quickly and reliably washed and sucked into the tank 3 by the cleaning water injected from the injection hole 21 of the suction nozzle 2o and the return water discharged from the return hose 25. Therefore, separation of solid and liquid within the tank 3 is performed smoothly and efficiently.

When the water level in the tank 3 reaches a predetermined low level, the operation of the water pump 28 is stopped based on the operation of the lower water level detection member 30, and the liquid from the tank 3 to the septic tanks 1 and 2 is stopped. return is interrupted. After the sediment P in the septic tanks 1 and 2 is sucked into the tank 3 in this way, when the on-off valve 32 of the drain pipe 31 is opened, the liquid in the tank 3 is discharged through the drain pipe 31. Only the sediment P such as sand remains in the tank 3.

Therefore, if the lid 10 is opened in this state, the precipitate P can be easily taken out from the opening 9 onto the truck T, etc., as shown in FIG.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and the configuration of each part can be changed and embodied as desired without departing from the spirit of the invention. Further, the present invention may be used in other treatment tanks other than septic tanks, such as pre-receiving tanks, charging tanks, and storage tanks.

Effects of the Invention As detailed above, the present invention allows sediments in a treatment tank such as a septic tank to be easily removed by suction without entering the tank, and the suctioned and removed sediments can be efficiently disposed of. It has the excellent effect of being able to be used in a variety of situations.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the outline of a sediment removal device embodying the present invention, Figure 2 is an enlarged front view of the separation tank, Figure 3 is a side view of the tank, and Figure 4. 18 is a suction hose, 20 is a suction nozzle, 21 is an injection hole constituting an injection means, and 22 is a water supply pipe. Patent applicant: Arai Seisakusho Co., Ltd. Representative: Hironobu Onda, patent attorney

Claims (1)

[Claims] I Treatment of human waste, etc. in septic tanks (1, '2), pre-receiving tanks, input tanks, storage tanks, etc., and for sediments (P) such as sand, balas, human sludge, and solids in the tanks. Precipitation in a treatment tank such as a septic tank, which is characterized by injecting washing water to wash the precipitate, and then sucking the precipitate together with the washing water into a separation tank ('()) and storing the precipitate. Removal method: z Sand, balas,
A tank (3) that sucks in precipitates (P) such as scum and solids and separates them into solids and liquids inside. A vacuum pump (15) for maintaining the inside of the tank (3) in a negative pressure state, and an injection means (21) for injecting washing water from the seven suction nozzles (20) to wash the precipitate prior to suction. ) A device for removing sediment in a treatment tank such as a septic tank. 3 The tank (3) is formed in a substantially cylindrical shape and is arranged with its axis inclined, and the suction nozzle (20)
Claim 2, characterized in that the connection port (6) of the suction hose (18) connected to the tank (3) is provided at the upper and lower center of the lower outer peripheral edge of the tank (3). A device for removing sediment in treatment tanks such as septic tanks. 4. The jetting means according to claim 2 or 3, wherein the jetting means is constituted by a plurality of jetting holes (2) provided at the tip of the suction nozzle (20). A device for removing sediment from a treatment tank such as a septic tank.