JPH08198003A - Washed wastewater treating device in concrete mixer truck - Google Patents

Abstract

PURPOSE: To prevent the adhesion of the residual of ready-mixed concrete to a shaft body or a hollow shaft by constituting a wastewater storing tank so that it can be made rotatable at a position where the tank is protruded on the outer side of a concrete mixer truck. CONSTITUTION: A wastewater storing tank 9 is made protrudable to the outer side of a concrete mixer truck 1 because the tank 9 is fitted to one end side of a slidable shaft body 8. A lid 11 is rotated, as shown by a two-dot chain line, at a slid position to make an opening part 10 an opened condition, and water is put into a discharge chute 4 by a hose prepared separately to wash the discharge chute 4. Washed wastewater, after washing the discharge chute 4, is carried along the discharge chute 4 to be stored in the wastewater storing tank 9. After that, the lid 11 is rotated to close an opening part 10, and then the shaft body 8 is slid to an inner side to a cylindrical body 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning sewage treatment device for a concrete mixer truck, and more specifically, when discharging fresh concrete and then cleaning the fresh concrete adhering to its discharge chute at a discharge work site. The present invention relates to a cleaning wastewater treatment device for a concrete mixer truck, which is capable of temporarily storing cleaning wastewater and transporting it to a predetermined disposal site or treatment site before disposal.

[0002]

2. Description of the Related Art Generally, in a concrete mixer truck, after discharging the raw concrete in the drum with a discharge chute, the raw concrete adhering to the inside of the drum, the hopper, the discharge chute, etc. at the work site is washed with water or the like. To wash.

Of the cleaning wastewater generated at this time, the wastewater that has cleaned the drum is inevitably stored in the drum, so there is almost no runoff, but the wastewater that has cleaned the hopper and discharge chute is allowed to flow directly at the work site. It is often thrown away and causes environmental pollution.

In order to solve this, an invention such as Japanese Patent Publication No. 3-44882 has been made.

That is, according to the present invention, a shaft body 14 is erected on a vehicle body 13 below a discharge chute 12 of ready-mixed concrete, a swivel arm 15 is pivotably provided around the shaft body 14, and a waste water storage tank 16 is provided. Is fixed to a hollow shaft 17 penetrating substantially the center of the inside of the sewage storage tank 16, the swivel arm 15 is passed through the hollow shaft 17, and the sewage storage tank 16 is vertically rotated about the shaft body 14. The sewage accommodating tank 16 is configured to be movable and to prevent the horizontal rotation and vertical rotation of the sewage storage tank 16 from being provided.

[0006]

However, this conventional device has a problem in that fresh concrete remains and adheres to the shaft body 14, the swing arm 15 and the hollow shaft 17 which are erected and cannot be removed. was there.

Further, the conventional apparatus had a complicated overall structure and complicated maintenance.

The present invention has been made in order to solve all of these problems. There is no risk of ready-mixed concrete remaining, the structure is simpler and maintenance is easier than before, and strength is guaranteed. An object of the present invention is to provide a cleaning sewage treatment device for a concrete mixer truck.

[0009]

The present invention has been made to solve such a problem, and a means for solving the problem is that the waste water storage tank 9 can be projected to the outside of the concrete mixer truck 1. The sewage water storage tank 9 is slidably attached to the shaft body 8 and is configured to be rotatable at a position protruding to the outside of the concrete mixer truck 1.

The wastewater storage tank 9 is preferably formed in a substantially boat shape.

Further, the lid 11 is provided with an opening in the wastewater storage tank 9.
It is preferable to mount 10 so that it can be opened and closed.

[0012]

Since the cleaning wastewater treatment apparatus for the concrete mixer truck of the present invention has the above-mentioned structure, first, the wastewater storage tank 9 is slid so as to project from the concrete mixer truck 1 to the outside.

In this state, sewage obtained by washing the discharge chute after discharging the fresh concrete is supplied to and stored in the sewage storage tank 9.

After that, by moving the concrete mixer truck 1 to a predetermined disposal location and then rotating the waste water storage tank 9, the waste water in the waste water storage tank 9 can be discarded.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 is a concrete mixer truck, and a drum 2 for kneading cement, water or the like into raw concrete, and a hopper 3 for introducing cement or the like into the drum 2. , A discharge chute 4 for discharging the ready-mixed concrete produced in the drum 2
And is equipped with.

Reference numeral 5 is a rear bumper of the concrete mixer truck 1, 6 and 6 are a pair of chassis frames formed in a substantially U-shaped side surface, and brackets 6a, 6a are integrally attached to the chassis frame 6. There is.

The bracket 6a, 6a has a cylindrical body 7
Is supported in a erected state, and a shaft body 8 is slidably and rotatably fitted and attached to the cylindrical body 7.

Reference numeral 9 denotes a waste water storage tank for storing the waste water after cleaning the inside of the drum 2 after the discharge of the fresh concrete and the discharge chute 4, and one end side of the shaft body 8 slidably fitted and inserted. Installed on.

As described above, as a result of the waste water storage tank 9 being attached to one end side of the slidable shaft body 8, the waste water storage tank 9 can project to the outside of the mixer truck 1.

As shown in FIG. 5, the sewage storage tank 9 has a substantially ship-shaped front surface and a substantially square side surface as shown in FIG.
10 is formed, and a lid 11 for making the opening 10 openable and closable is rotatably attached to the edge of the opening 10.

Next, the case of treating the cleaning wastewater after discharging the fresh concrete by the above concrete mixer truck 1 will be described.

First, when the concrete mixer truck 1 discharges the ready-mixed concrete in the drum 2 at the work site, the ready-mixed concrete is discharged from the discharge chute 4 to a desired position.

After the discharging, before the raw concrete adhering to the discharging chute 4 is solidified, the shaft body 8 is slid outward with respect to the cylindrical body 7 as shown in FIG.

At this time, the sewage storage tank 9 is set at 2 in FIG.
It is located below the discharge chute 4 as shown by the dotted line.

Then, in the slid position, FIG.
As shown by the two-dot chain line, the lid 11 is rotated to open the opening 10, and water is poured into the discharge chute 4 from a hose (not shown) separately prepared to wash the discharge chute 4.

The cleaning wastewater after cleaning the discharge chute 4 is stored in the wastewater storage tank 9 along the discharge chute 4.

After that, the lid 11 is rotated to close the opening 10, and then the shaft body 8 is slid inward with respect to the cylindrical body 7.

In this way, the sewage storage tank 9 containing the sewage is restored to its original position, and in this state the concrete mixer truck 1 is discharged from the fresh concrete discharge site to a waste sewage disposal site (usually a concrete mixer truck). 1 owned by the business owner).

After the concrete mixer truck 1 is moved to the disposal site, the shaft body 8 is again slid to the outside with respect to the cylindrical body 7 at the disposal site, and the lid 11 is rotated to open the opening 10. Further, as shown in FIG. 7, when the dirty water storage tank 9 is rotated by the rotation of the shaft 8 with respect to the cylindrical body 7, the washed dirty water in the dirty water storage tank 9 is discarded at a predetermined disposal location.

As described above, the cleaning sewage treatment apparatus in the concrete mixer truck of this embodiment is operated by a series of operations of sliding the shaft 8 in and out, opening and closing the lid 11, and rotating the sewage storage tank 9. It is possible to move the concrete cleaning wastewater to a predetermined disposal site and to dispose of the cleaning wastewater by a very simple work without draining it to the site.

Although the shaft 8 is slidable with respect to the cylinder 7 in the above embodiment, the mechanism for sliding the shaft 8 is not limited to this.

In this embodiment, the shaft 8 is rotatable with respect to the cylindrical body 7 so that the dirty water storage tank 9 is rotatable. It is also possible to make the sewage storage tank 9 rotatable by rotating the sewage storage tank 9 with respect to the shaft body 8 without rotating. The point is that the dirty water storage tank 9 may be configured to be rotatable.

Further, in this embodiment, since the lid 11 is rotatably attached to the sewage storage tank 9, the opening 10 of the sewage storage tank 9 can be opened and closed by the lid 11, and as a result,
Although the preferable effect that the cleaning wastewater can be prevented from being accidentally spilled, such a lid 11 is not an essential condition of the present invention, and the cleaning wastewater including the wastewater storage tank 9 without the lid 11 is obtained. A processing device is also included in the scope of the present invention. However, spilling of cleaning wastewater when the concrete mixer truck 1 moves does not meet the requirement for environmental pollution prevention, and therefore the lid 11 is often attached in reality.

Further, in the above embodiment, the waste water storage tank 9
Since the front is formed into a substantially boat shape, the preferable effect that the cleaning sewage can be easily discharged from the sewage storage tank 9 has been obtained, but the shape of the sewage storage tank 9 is not limited to the front boat shape. The shape does not matter.

Further, in this embodiment, the cleaning wastewater obtained by cleaning only the discharge chute 4 was stored in the wastewater storage tank 9 without cleaning the inside of the drum 2. Although the drying is relatively slow, the fresh concrete adhering to and remaining on the discharge chute 4 exposed in the air remains in a very short time, and the capacity of the dirty water storage tank 9 has a relationship with the drum 2. This is because it is difficult to store the cleaning wastewater inside the wastewater storage tank 9.

Therefore, if the capacity of the dirty water storage tank 9 is increased, the cleaning dirty water in the drum 2 may be stored in some cases. Therefore, the cleaning wastewater stored in the wastewater storage tank 9 is not limited to the cleaning wastewater of the discharge chute 4.

[0038]

As described above, according to the present invention, the sewage storage tank is slidably attached to the shaft so that the sewage storage tank can be projected to the outside of the mixer truck and can be rotated at the projected position. Because it is configured, it is possible to very easily dispose of the wash sewage of fresh concrete at a predetermined disposal site without running down the sewage of fresh concrete by a series of simple operations of sliding the shaft and rotating the sewage storage tank. effective.

Furthermore, since the shaft body or the like does not exist in the sewage storage tank, the fresh concrete does not remain and adhere to the shaft body or the hollow shaft unlike the conventional apparatus.

Further, since it has a simple structure in which the shaft is slid and rotated, there is an advantage that the entire structure is not complicated unlike the conventional device and the maintenance is easy.

Further, there is no fear of strength and no complicated electric wiring is required.

[Brief description of drawings]

FIG. 1 is a front view of a concrete mixer truck as an example.

FIG. 2 is a side view of the concrete mixer truck.

FIG. 3 is a schematic plan view of a cleaning sewage treatment apparatus in a concrete mixer truck as one example.

FIG. 4 is a schematic side view of the same.

FIG. 5 is a schematic front view of a dirty water storage tank.

FIG. 6 is a side view showing a state where the shaft body is slid.

FIG. 7 is a front view of a state in which the dirty water storage tank is rotated.

FIG. 8 is a schematic front view of a cleaning sewage treatment apparatus in a conventional concrete mixer truck.

FIG. 9 is a schematic side view of the same.

[Explanation of symbols]

 1 ... Concrete mixer truck 8 ... Shaft 9 ... Sewage storage tank

Claims (3)

[Claims] 1. A sewage storage tank (9) is slidably attached to a shaft (8) so that it can be projected to the outside of a concrete mixer truck (1), and the sewage storage tank (9) is
A cleaning sewage treatment apparatus for a concrete mixer truck, which is configured to be rotatable at a position projecting to the outside of the concrete mixer truck (1). 2. The cleaning sewage treatment apparatus for a concrete mixer truck according to claim 1, wherein the sewage storage tank (9) is formed in a substantially boat shape. 3. The sewage storage tank (9) has a lid for opening and closing the opening (10) of the sewage storage tank (9).
The cleaning sewage treatment apparatus in a concrete mixer truck according to claim 1 or 2, wherein (11) is rotatably attached.