JP2003239375A - Human waste collecting vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a human waste collecting vehicle capable of suppressing the diffusion of malodor during human waste recovery work. <P>SOLUTION: This human waste collecting vehicle 1 comprises a human waste tank 4 for storing human waste; a suction hose 6 for sucking human waste in a toilet tank 10 to convey it to the human waste tank 4; a Roots blower 11 used as an intake means for evacuating the human waste tank 4 to generate human waste suction force to a suction port 6a of the suction hose 6; and an exhaust pipe 13 for guiding exhaust air exhausted from the Roots blower 11, into the vicinity of the suction port 6a of the suction hose 6 to exhaust it. A primary deodorizing tank 8 is disposed on the way of an intake pipe 13 serving as an intake line which communicates the human waste tank 4 with the Roots blower 11, and a secondary deodorizing tank 9 is disposed on the way of the exhaust pipe 13. Intake air from the human waste tank 4 passes through the primary deodorizing tank 8 and secondary deodorizing tank 9 and is exhausted into the vicinity of the suction port 6a via the exhaust pipe 13. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a human waste collection vehicle used for human waste collection work of a drawing toilet and collection of excess sludge in a septic tank.

[0002]

[Prior Art] Pumping toilets are installed in private houses in areas where sewerage facilities are not maintained.
The human waste collected in the toilet bowls of these drawing toilets is collected using a human waste collection vehicle called a vacuum car. In a conventional human waste collection vehicle, a human waste tank for storing human waste is arranged in a portion corresponding to a cargo loading portion of a lorry, and a suction hose for sucking human waste in the toilet tank and transporting the human waste to the human waste tank, It is equipped with a vacuum pump and the like for generating a suction force of human waste by making the negative pressure in the human waste tank.

When collecting human waste, a human waste collection vehicle is parked near the toilet tank of the pump-up type toilet to be collected,
After extending the suction hose to the toilet bowl and immersing the suction port at its tip into the toilet bowl, operate the vacuum pump to generate a negative pressure in the human waste tank and suck the human waste in the toilet bowl with the suction hose. It is stored in the human waste tank at.

[0004]

In the case of the conventional human waste collection vehicle, since the exhaust gas generated when the vacuum pump is operated is released into the atmosphere, as the human waste is stored in the human waste tank, the vacuum pump is The odorous components mixed in the exhaust gas increase, and a bad odor begins to drift near the place where the recovery work is performed. Therefore, a deodorant is placed at the exhaust port of the vacuum pump,
Measures to prevent offensive odors such as removing the odorous components contained in the exhaust from the vacuum pump with a deodorant are taken.

However, since it is difficult to completely remove all the various odorous components contained in human waste with a deodorant, even if the deodorant is provided, a bad odor may drift during the recovery operation. In addition, the deodorizing ability of the deodorant gradually deteriorates with the accumulation of working time, so that it must be replaced regularly, which is troublesome.

The problem to be solved by the present invention is to provide a human waste collection vehicle capable of suppressing the diffusion of a bad odor to the surroundings during the human waste collection work.

[0007]

The human waste collection vehicle of the present invention comprises:
An excrement tank for storing excrement, an intake hose for sucking excrement and conveying it to the excrement tank, and a negative pressure in the excrement tank to generate an excretion suction force at the intake port of the inhalation hose It is characterized in that it is provided with an intake means and an exhaust path for guiding the exhaust exhausted from the intake means to the vicinity of the intake port of the intake hose and exhausting it.

With this structure, the exhaust gas discharged from the suction means during the human waste collection work is discharged near the suction port of the suction hose, that is, in the toilet bowl.
Since the odor contained in the human waste is not released into the atmosphere together with the exhaust air from the intake means, it is possible to prevent the malodors during the human waste collection work from spreading to the surroundings. Further, it is not necessary to replace the deodorant regularly as in the case of using the deodorant.

By arranging at least a part of the exhaust passage along the suction hose or in the suction hose, the suction hose from the human waste collection vehicle to the toilet tank can be piped and withdrawn simultaneously with the exhaust passage. Since construction and withdrawal can also be performed, it is possible to avoid complication of preparation work and withdrawal work. Further, by disposing at least a part of the exhaust path in the suction hose, it is not necessary to separately secure a space for setting the exhaust path, so that it is possible to avoid difficulty in piping work in a narrow place.

On the other hand, it is desirable that an intake passage for making the inside of the raw sewage tank have a negative pressure is provided between the raw sewage tank and the intake means, and a deodorizing means is provided in at least one of the intake passage and the exhaust passage. . By providing a deodorizing means in the intake passage, it is possible to remove odorous components, contaminants and solid components contained in the intake air, thereby suppressing the bad odor, and the intake means is provided by the odorous components, contaminants and solid components. It is possible to prevent harmful effects, and by providing a deodorizing means in the exhaust path, it is possible to remove odorous components in the exhaust gas discharged into the toilet tank, further improving the malodor control function. You can

As the deodorizing means, by providing a tank with a built-in deodorant communicating with the intake passage or the exhaust passage, the odorous components such as ammonia, hydrogen sulfide, organic malodorous components and rotten odor contained in the exhaust gas can be efficiently supplied. Not only will it be removed well, but it will also be possible to collect contaminants and solids. In this case, as the deodorant, water, activated carbon, liquid ozone, or a fragrance is suitable, and water is put in the tank with a built-in deodorant disposed in the intake path, and the tank with a built-in deodorant placed in the exhaust path is used. It is desirable to add water, liquid ozone, activated carbon, fragrance, etc.

[0012]

1 is a side view showing an excrement collection vehicle according to an embodiment of the present invention, FIG. 2 is a plan view of an excrement tank portion constituting the excrement collection vehicle shown in FIG. 1, and FIG. 2 is a rear view of the human waste tank shown in FIG. 2, and FIG. 4 is a schematic configuration diagram showing the configuration of the human waste collection vehicle shown in FIG.

As shown in FIGS. 1 to 3, in the human waste collection vehicle 1 of this embodiment, as in a freight vehicle, a cabin portion 3 and an engine (not shown) are provided at the front of the vehicle body frame 2.
The traveling equipment such as the above is arranged, the human waste tank 4 is mounted on the rear portion of the vehicle body frame 2, and the human waste collection work equipment 5 is arranged between the cabin portion 3 and the human waste tank 4. The human waste tank 4 has a cylindrical shape, a primary deodorizing tank 8 and a secondary deodorizing tank 9 are provided at a front end portion thereof, and a suction hose 6 is wound and stored on a hose reel 7 provided on the upper surface of the human waste tank 4. There is.

As shown in FIG. 4, the human waste collection vehicle 1 includes a human waste tank 4 for storing human waste and human waste X in a toilet tank 10.
A suction hose 6 for sucking in and transporting it to the human waste tank 4, a roots blower 11 serving as a suction means for generating a human waste suction force at a suction port 6a of the blood hose 6 by making a negative pressure in the human waste tank 4, and a roots blower. The exhaust pipe 13 is composed of an exhaust pipe 13 which is an exhaust path for guiding the exhaust exhausted from the exhaust hose 11 to the vicinity of the intake port 6a of the intake hose 6, and the exhaust port 13a of the exhaust pipe 13 has an intake hose as will be described later. 6 is arranged in the vicinity of the suction port 6a. A primary deodorizing tank 8 is arranged in communication with the intake pipe 12 in the middle of an intake pipe 12 which is an intake path connecting the human waste tank 4 and the roots blower 11, and a secondary deodorizing tank 9 is also provided in the middle of the exhaust pipe 13. It is placed in communication. The primary deodorization tank 8 contains water W as a deodorant, and the secondary deodorization tank 9 contains water W as a deodorant and activated carbon C.

When the human waste collection vehicle 1 is used to collect human waste, the suction hose 6 wound around the hose reel 7 is pulled out and extended, and the suction port 6a at the tip thereof is inserted into the toilet bowl 10 to collect human waste. Immerse in X. And Roots Blower 11
Is operated, the air in the human waste tank 4 is sucked through the intake pipe 12, so that the negative pressure is generated in the human waste tank 4 and is sucked into the suction port 6a of the suction hose 6 whose proximal end portion 6b is connected to the human waste tank 4. A force is generated to start sucking the human waste X in the toilet bowl 10.

The human waste X sucked from the suction port 6a is conveyed via the suction hose 6, flows from the base end portion 6b thereof into the human waste tank 4, and is gradually stored therein.
Since the plurality of cushioning members 14 are arranged in an inclined state in the human waste tank 4 located below the base end portion 6b of the suction hose 6, the splash of human waste that falls from the base end portion 6b into the human waste tank 4 is generated. It is possible to prevent scattering to the intake port 12a of the human waste tank 4.

On the other hand, during the collection of human waste, the roots blower 11
The exhaust gas discharged from the exhaust pipe 13 moves through the exhaust pipe 13 and is discharged into the toilet tank 10 from the exhaust port 13a located near the suction port 6a of the suction hose 6, so that the human waste tank 4
The odor contained in the human waste X stored therein is not released into the atmosphere together with the exhaust air from the roots blower 11, and it is possible to suppress the malodor from being diffused to the surroundings during the human waste collection work.

Since the portion of the exhaust pipe 13 near the exhaust port 13a is arranged along the suction hose 6, the human waste collection vehicle 1
It is possible to perform the piping and withdrawal of the exhaust pipe 13 at the same time as the piping and withdrawal of the suction hose 6 from the container to the toilet tank 10, and it is possible to avoid complication of the preparation work and the withdrawal work. Moreover, since it is not necessary to secure a piping space for the exhaust pipe 13, piping work in a narrow space is relatively easy.

On the other hand, a primary deodorizing tank 8 containing water W is provided in the middle of the intake pipe 12, and the intake air flowing from the human waste tank 4 into the primary deodorizing tank 8 via the intake pipe 12 is water W. Odor components, contaminants, solids, etc. are collected in the water W by contact with the water W, so that not only the malodor is suppressed, but also the Roots blower 11 is adversely affected by these odor components, contaminants, solids, etc. Can be prevented. Further, since the secondary deodorization tank 9 containing the water W and the activated carbon C is also arranged in the middle of the exhaust pipe 13, the odorous components in the exhaust gas discharged into the toilet tank 10 via the roots blower 11 are also included. It is efficiently collected and removed, and exhibits an excellent odor control function.

The primary deodorizing tank 8 and the secondary deodorizing tank 9 are odorous components and impurities which are relatively soluble in water W, such as ammonia, hydrogen sulfide, organic malodorous components, and spoiled odorous components contained in intake air and exhaust gas. In addition to efficiently collecting and removing such substances, minute solids can be removed and water in human waste can also be collected. As the deodorant incorporated in the primary deodorizing tank 8 and the secondary deodorizing tank 9, in addition to water W and activated carbon C, liquid ozone, a fragrance or the like can be adopted.

Further, in the human waste collection vehicle 1, as shown in FIG. 4, since the bypass pipe 16 connecting the intake pipe 12 and the exhaust pipe 13 and the pressure feed switching valve 15 are provided, the pressure feed switching valve 15 should be opened. If the intake pipe 12 and the exhaust pipe 13 are communicated with each other via the bypass pipe 16, the suction force of the suction port 6a can be stopped while the roots blower 11 is still operating, so it is necessary to suspend the suction work. It is convenient when the above occurs.

Further, in FIG. 4, the load release valve 18
Is for returning the negative pressure in the human waste tank 4 to the atmospheric pressure, and the human waste tank 4 can be returned to the atmospheric pressure by manually opening the valve after the human waste suction work is completed. Further, the pressure breaker 17 has a function of automatically opening when high pressure is applied to the inside of the human waste tank 4 when the pressure exceeds a certain value, and discharges the human waste stored in the human waste tank 4. When the water contained in the human waste tank 4 is discharged for the purpose of cleaning or the like, it has a function of preventing deformation and destruction of the human waste tank 4 due to excessive pressure.

In addition, with respect to the human waste collection vehicle 1 of this embodiment,
It is also possible to adopt the human waste collection and weighing system proposed by the applicant in Japanese Patent Application No. 2001-294997, and by combining such human waste collection and weighing system with the human waste collection vehicle 1, human waste collected in the human waste tank 4. Can be accurately measured and the measurement data can be quickly transmitted to the central control center.

[0024]

The present invention has the following effects.

(1) A raw sewage tank, a suction hose, an intake means for making a negative pressure in the raw sewage tank to generate a raw sewage suction force at the suction port of the suction hose, and an exhaust gas discharged from the suction means. Since the odor contained in human waste is not released into the atmosphere together with the exhaust air from the intake means, the deodorant is used because the exhaust passage for inducing and discharging the exhaust gas to the vicinity of the intake port of the intake hose is provided. Without this, it is possible to prevent the malodor from spreading to the surroundings during the human waste collection work.

(2) By disposing at least a part of the exhaust path along the suction hose or in the suction hose, it is possible to avoid complication of preparation work and withdrawal work before and after collecting human waste, By disposing at least a part of the exhaust passage in the suction hose, it is not necessary to separately secure a space for constructing the exhaust passage, so that it is possible to avoid difficulty in piping work in a narrow place.

(3) By providing a deodorizing means in the intake path between the human waste tank and the intake means, it is possible to suppress a bad odor and prevent the intake means from being adversely affected by odorous components. By providing the deodorizing means in the above, it becomes possible to remove the odorous components in the exhaust gas discharged into the toilet tank, and therefore the malodor suppressing function can be further enhanced.

(4) As the deodorizing means, by providing a tank with a built-in deodorant communicating with the intake path or the exhaust path, odors such as ammonia, hydrogen sulfide, organic malodorous components and putrid odors contained in exhaust gas are provided. It becomes possible to efficiently remove the components and also to collect contaminants and solids.

[Brief description of drawings]

FIG. 1 is a side view showing an excrement collection truck according to an embodiment of the present invention.

2 is a plan view showing an excrement tank portion of the excrement collection vehicle shown in FIG. 1. FIG.

FIG. 3 is a rear view of the human waste tank shown in FIG.

FIG. 4 is a schematic configuration diagram showing a configuration of the human waste collection vehicle shown in FIG. 1.

[Explanation of symbols]

1 human waste collection truck 2 body frame 3 cabin parts 4 human waste tank 5 Equipment for collecting human waste 6 Inhalation hose 6a Suction port 6b base end 7 hose reel 8 Primary deodorization tank 9 Secondary deodorization tank 10 toilet tanks 11 Roots blower 12 Intake pipe 12a intake port 13 Exhaust pipe 13a exhaust port 14 Buffer member 15 Pressure switching valve 16 Bypass pipe 17 Pressure Breaker 18 Load release valve 19 Vacuum Breaker C activated carbon W water X human waste

Claims (4)

[Claims] 1. A human waste tank for storing human waste, a suction hose for sucking human waste and transporting the human waste to the human waste tank, and a negative pressure in the human waste tank for sucking human waste into a suction port of the suction hose. A human waste collection vehicle, comprising: an intake unit for generating the exhaust gas; and an exhaust path for guiding the exhaust gas discharged from the intake unit to the vicinity of the suction port of the suction hose and discharging the exhaust gas. 2. The human waste collection vehicle according to claim 1, wherein at least a part of the exhaust path is arranged along the suction hose or in the suction hose. 3. An intake passage for providing a negative pressure in the human waste tank between the human waste tank and the intake means,
The human waste collection vehicle according to claim 1 or 2, wherein deodorizing means is provided in at least one of the intake path and the exhaust path. 4. The human waste collection vehicle according to claim 3, wherein a tank with a built-in deodorant that communicates with the intake path or the exhaust path is provided as the deodorizing means.