JPH028728Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application)
The present invention relates to a mixer truck wash water regeneration treatment device for washing fresh concrete adhering to hoppers, shooters, etc., for example.

(Prior Art) In general, in a ready-mixed concrete transport vehicle such as a mixer truck, it is necessary to promptly wash the ready-mixed concrete adhering to various parts of the vehicle after work is completed before it dries. For this reason, mixer trucks, whether large or small, are equipped with a wash water tank.

(Problem that the invention aims to solve) However, when cleaning with the cleaning water from this tank, if this cleaning water is disposed of outside, contamination becomes a problem in urban areas, and cleaning on site is often difficult. . If cleaning is attempted after the vehicle has been moved to a location where there is no problem in disposing of the cleaning water, the ready-mixed concrete may dry and stick to various parts of the vehicle, requiring a great deal of time and effort to remove it. The capacity of cleaning water stored in the cleaning water tank is as follows:
Regardless of whether the mixer truck is large or small, 200
There was a limit to this, and increasing the capacity beyond this risked reducing transportation capacity.

In view of the above-mentioned points, the present invention effectively solves the problems of the conventional technology.The purpose of the present invention is to regenerate wash water for mixer trucks, which has a simple structure and can effectively utilize wash water. A processing device is provided.

(Means for solving the problem) In order to achieve such a purpose, the present invention
A washing water tank containing washing water is provided on a pedestal on which the mixer drum is rotatably mounted, and a water filtration tank is provided at the rear of the pedestal to collect and filter the washing water used to wash the mixer drum, etc. The present invention is characterized in that a wash water pump is provided on the pedestal for selectively or combining the wash water in the wash water tank and the wash water in the filtration tank and pumping the selected water to the washing section.

(Function) With such technical means, a washing water tank containing washing water and a filtered water tank collecting and filtering the washing water are provided, and the washing water in the washing water tank and the washing water in the water filtration tank are provided. By installing a wash water pump on the stand that selects or combines the water with the water and pumps it to the cleaning area, the wash water tank does not contain water after cleaning, and the water is mixed with clean water depending on the area to be cleaned. , Reused water, which is somewhat less clean than clean water even after being filtered, is used differently. Therefore, only the water in the water filtration tank that is stored for reuse is ultimately discharged, and the washing water in the washing water tank is saved. Water waste is reduced.

(Example) Next, an example of the present invention will be described in detail based on the drawings.

FIG. 1 shows a schematic diagram of a mixer truck to which the present invention is applied, with A being a front view thereof and B being a side view thereof. In the figure, a mixer truck 1 has a mixer drum 2 mounted on a pedestal 3. This mixer drum 2 is
The front part is tilted low and the rear part is tilted high, and is rotationally driven by a drive device 4 installed at the front and rear. Further, the rear end opening 5 of the mixer drum 2 is equipped with a hopper 6, a chute 7, etc., and when the mixer drum 2 is driven in the normal direction, fresh concrete put in through the hopper 6 is mixed, and when the mixer drum 2 is driven in the reverse direction, the mixer drum The ready-mixed concrete accommodated inside 2 is discharged via the chute 7. Note that a wash water tank 8 is installed on the pedestal 3 in the mixer drum 2 . The vicinity of the rear end opening 5 is cleaned with the cleaning water stored in the cleaning water tank 8. That is, the fresh concrete adhering to the mouth of the rear end opening 5 is washed by spraying washing water in a shower shape.
Alternatively, cleaning water is supplied into the rear end opening 5 through the potper 6 for cleaning. In addition, mixer drum 2
Clean the underside, for example around the chute 7. A portion of the washing water that has washed the vicinity of the rear end opening 5 is stored in the mixer drum 2, and is transported to a parking lot or the like where the concrete can be washed, along with other fresh concrete washing water that is supplied in large quantities. Other wash water passes through the chute 7 and is stored inside a water filtration tank 9 installed at the rear end of the pedestal 3.

Next, FIG. 2 shows a schematic configuration diagram of an embodiment of the present invention, with A being a front view thereof and B being a plan view thereof. In the figure, the wash water tank 8 is provided with a first wash water outlet (first water inlet) 10 and a second wash water outlet (second water inlet) 11 . The first water supply port 10 opens at a required height from the bottom surface of the wash water tank 8. The second water supply port 11 is the first water supply port 10
It opens lower, for example, at the bottom of the wash water tank 8. The first and second water ports 10 and 11 pass through a first water port stop valve 12 and a second water port 13,
It is connected to the main pipe 14. A drain stop valve 15 is connected to a drain pipe 16 branching from the main pipe 14 .
As shown in FIG. 3, the end of this main pipe 14 is
It is connected to the suction side of a wash water pump 17 installed at the rear end of the pedestal 3 shown in FIG. Also,
The main pipe 14 branches from the wash water pump 17 and is connected to the other end of a filtered water pipe 18 whose one end is connected to the bottom of the water filtration tank 9 . 19 and 20 are main pipe stop valves and filtered water pipe stop valves. Note that the water supply side of the wash water pump 17 is connected to the water supply pipe 21. To this water supply pipe 21, for example, a shower injection pipe 22, an internal water supply pipe 23 that supplies water to the inside of the mixer drum 2, and a pistol-shaped nozzle 24 that cleans the lower part of the mixer drum 2 are branched and connected, respectively. 25 and 26 are a shower injection pipe stop valve and an internal water supply pipe stop valve. Furthermore, 2
7 and 28 are a drain pipe and a drain pipe stop valve branched from the water supply pipe 21.

The functions of the present invention will be explained using the above configuration.
The wash water is introduced into the suction side of the wash water pump 17 via the first water inlet 10 and the first water inlet stop valve 12 of the wash water tank 8 , through the main pipe 14 .
Water supply pipe 21 from the water supply side of this cleaning water pump 17
After that, the cleaning water is sent under pressure to the shower injection pipe 2.
2. Internal water supply pipe 23 or pistol type nozzle 24
are supplied respectively. Shower injection pipe 22
A nozzle (not shown) for spraying cleaning water in a shower-like manner is connected to the end of the mixer drum 2, and is installed to clean the mouth of the rear end opening 5 of the mixer drum 2. The end of the internal water supply pipe 23 is inserted into the mixer drum 2 from the rear end opening 5 via the potper 6, and is installed so that blades, etc. (not shown) can be cleaned. In addition, a pistol type nozzle 24
is connected to the water supply pipe 22 by a flexible rubber pipe 24A, etc., and cleans fresh concrete adhering to the underside of the mixer drum 2 or around the chute 7, etc. A part of the washing water used for washing is stored inside the mixer drum 2, while the other washing water is stored inside the water filtration tank 9 via the chute 7. As shown in FIG. 4, the water filtration tank 9 is
An outer case 29, a filter 31 inserted into an opening 30 provided on the upper surface of the outer case 29, and the outer case 29.
It consists of a water supply port 32 with a strainer provided on the bottom surface of the tank. The opening 30 is provided close to the lower end of the chute 7 and collects contaminated wash water flowing down through the chute 7. Filter 31
This is a filter that has a relatively rough mesh that removes contaminants such as gravel that contaminate the washing water, but cannot remove components of fresh concrete, and can be used for a long time. In addition, 33
Reference numeral 34 indicates a footrest member for the operator when going up and down, and 34 indicates a protective metal fitting provided in the opening 30.

Close the main pipe stop valve 19, and close the filtrate water pipe stop valve 20.
By opening the , cleaning water is supplied from the water filtration tank 9 to the cleaning water pump 17 via the filtered water piping 18, and then again through the water supply piping 21 to the shower injection piping 22, the internal water supply piping 23, or the pistol type nozzle. 24, respectively. If the amount of cleaning water collected in the water filtration tank 9 decreases, the amount of cleaning water stored in the mixer drum 2 is taken out by driving the mixer drum 2 in reverse and is collected in the water filtration tank 9 to increase the amount of water. be able to. Note that this increased amount of cleaning water may be returned to the inside of the mixer drum 2 after the cleaning is completed.

Although the washing water for washing the vicinity of the rear end opening 5 is collected and filtered, it is repeatedly used for preliminary washing which does not require filtering down to the components of the ready-mixed concrete. Therefore, the water filtration tank 9
The insides of the pipes from to the vicinity of the rear end opening 5, such as the filtered water pipe 18, the water supply pipe 21, the shower injection pipe 22, the internal water supply pipe 23, and the pistol-shaped nozzle 24 in this embodiment, are left in a pre-washed state. Ba,
There is a risk that components of fresh concrete may settle and cause blockages. Therefore, after the cleaning of the vicinity of the rear end opening 5 is completed, the second water inlet stop valve 13 is opened, and the clean wash water remaining in the wash water tank 8 is supplied from the second water inlet 11 to the filtrate water pipe 18, The water supply pipe 21, the shower injection pipe 22, the internal water pipe 23, the pistol nozzle 24, etc. are cleaned again. By providing the first and second water supply ports 10 and 11 in the cleaning water tank 8, it is not necessary to separately provide a tank for cleaning inside the pipes.

(Effect of the invention) As described above, according to the invention, a washing water tank containing washing water is provided on a pedestal on which a mixer drum is rotatably mounted, and a washing water tank containing washing water is provided at the rear of the pedestal. A water filtration tank is provided to collect and filter the washing water that has been washed, and a washing water pump is mounted on the mount to select or combine the washing water in the washing water tank and the washing water in the water filtration tank and force-feed the selected water to the washing part. By installing this in the washing water tank, water after washing is not stored in the washing water tank. Clean water is used depending on the area to be cleaned, and recycled water, which is less clean than clean water even after being filtered, is used depending on the area to be cleaned. Therefore, only the water in the water filtration tank stored for reuse is ultimately discharged, while the water in the wash water tank is preserved. During the cleaning process, the cleaning water is stored in a water filtration tank,
Circulate between the wash water pump and the rear end opening,
Cleaning work can be started immediately on site after the use of ready-mixed concrete without disposing of wastewater outside, and since pre-cleaning is sufficient for cleaning around the rear end opening, the mesh of the filter is It has the advantage of being large enough to withstand long-term use, and also allowing a conventional car body to be easily equipped with a wash water pump and a water filtration tank.

[Brief explanation of drawings]

FIG. 1 shows a schematic configuration diagram of a mixer truck to which the present invention is applied, where A is a front view thereof, B is a side view thereof,
FIG. 2 shows a schematic configuration diagram of an embodiment of the present invention,
A is its front view, B is its plan view, and Figure 3 is a diagram of the piping procedures around the washing water pump and water filtration tank.
FIG. 4 shows a schematic diagram of the water filtration tank, with A being a front sectional view thereof and B being a plan view thereof. 2...
... Mixer drum, 8 ... Washing water tank, 9 ... Water filtration tank, 14 ... Main piping, 17 ... Washing water pump, 18 ... Filtered water piping, 21 ... Water supply piping,
22...Shower injection piping, 23...Internal water supply piping, 24...Pistol type nozzle, 31...Filter.

Claims (1)

[Scope of utility model registration request] A washing water tank containing washing water is provided on a pedestal on which the mixer drum is rotatably mounted, and a water filtration tank is provided at the rear of the pedestal to collect and filter the washing water used to wash the mixer drum, etc. A wash water regeneration treatment device for a mixer truck, comprising a wash water pump installed on the pedestal, which selects or combines the wash water of the wash water tank and the wash water of the water filtration tank and pumps the selected water to the washing section.