JPS6218314Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for washing a concrete transport pipe for transporting fresh concrete from a hopper to a pouring site with water after use.

An example of a device conventionally used for transporting concrete from a hopper containing fresh concrete to a pouring site via a transport pipe is explained with reference to FIG. 1. A is a piston-type concrete pump; They are made up of two units and operate with a 180° phase, and alternately repeat the operation of sucking in concrete from the hopper through a hopper and a valve (not shown), and then discharging the sucked concrete. It's summery. Concrete discharged from the concrete pump a is pumped to a transport pipe e via a Y-shaped pipe b, a bent pipe c, and a connecting pipe d, and concrete is poured at a casting site.

After transporting concrete using such a device, the concrete pump a, pipes, etc. must be washed with water before the concrete hardens.
Of these, the transport pipe e has a long overall length and cannot be easily washed with water, so a water washing adapter f is prepared in advance. In the flushing adapter f, a cleaning material h such as a sponge ball is housed in a container g whose top is open, and a nipple i for connecting a water pipe such as a water pipe protrudes from the bottom of the container g. It has been established.

When washing the transport pipe e with water, remove the joint j connecting the upper end of the connecting pipe d and the transport pipe e and the connecting pipe d.
The joint k connecting the lower end of the pipe c to the bent pipe c is removed, and the connecting pipe d is removed. Then, as shown in FIG. 2, the water washing adapter f is connected to the transport pipe e using the joint j, and the water pipe l is connected to the nipple i. In this state, when water from the pump is supplied from the water pipe l to the flushing adapter f, the cleaning material h such as a sponge ball is pushed out into the transport pipe e by the water pressure and moves within the transport pipe e. As a result, the cleaning material h cleans the inner surface of the transport pipe e, and also serves to push out residual concrete so that it does not mix with water.

In such a conventional method, since it is necessary to remove the connecting pipe d and connect the flush adapter f to the transport pipe e, there is a drawback that it takes time and manpower, such as having to carry a heavy object by hand.

The purpose of this invention is to save labor and improve efficiency when washing transport pipes with water.The hopper has a pump that alternately sucks in and discharges the concrete in the hopper, and is connected to a pump on the discharge side. In a concrete pump that transports concrete through a discharge pipe and a transport pipe, both ends of a movable pipe arranged between the discharge pipe and the transport pipe are bent 90 degrees in the same direction, and one end of the movable pipe is bent at 90 degrees in the same direction. is separably connected to the discharge pipe, and the other end of the movable pipe is rotatably connected to the transport pipe, and the cleaning material storage container to which the water distribution pipe is connected is connected to the transport pipe by the movable pipe. equipped at a position on the trajectory of the arc drawn by the discharge pipe connection side end of the movable pipe when rotating around the part,
The gist of the present invention is a concrete transport pipe flushing device, characterized in that the discharge pipe connection side of the movable pipe can be connected to the cleaning material storage container.

Next, an embodiment of the present invention will be explained with reference to FIGS. 3 and 4. A stirrer 2 is installed inside a hopper 1 containing fresh concrete, and an agitator 2 is installed on the outside of a bottom plate 3 of the hopper 1. Piston type pumps 4 are installed side by side via bent pipes 5, and are respectively connected to two openings 6 formed side by side in the bottom plate 3. The two piston pumps 4 operate with a phase of 180° to each other, sucking in concrete from the hopper 1, and then discharging the sucked concrete.

A lower end of a discharge pipe 7 is slidably in contact with the inner surface of the bottom plate 3, and one end of a movable pipe 9 is rotatably connected to the upper end of the discharge pipe 7 via a joint 8. The other end of the movable pipe 9 is rotatably connected to one end of the movable transport pipe 11 by a joint 10, and the other end of the movable transport pipe 11 is connected to the joint 1 as shown in FIG.
2 is rotatably connected to the proximal end of the fixed transport pipe 13.

The discharge pipe 7 is adapted to move along a guide rod 14, and is reciprocated along the guide rod 14 by a piston device (not shown).
The lower end of the discharge tube 7 is adapted to slide on the inner surface of the bottom plate 3 and connect with an opening 6 which is connected to the piston pump 4 performing the discharge operation. Therefore, when the piston type pump 4 is in the suction process, the concrete in the hopper 1 is sucked through the opening 6 and the bent pipe 5, and when the piston type pump 4 is in the discharge process, the lower end of the discharge pipe 7 is connected to the opening 6. Then, the concrete sucked in in the previous step is pumped to the concrete placement site via the bent pipe 5, the discharge pipe 7, the movable pipe 9, the movable transport pipe 11, and the fixed transport pipe 13.

In the concrete pump having the above structure, a cleaning material container 15 is fixed to the upper outside of the hopper 1. The cleaning material container 15 is open at the top, has a water pipe 16 connected to its lower part, and stores a cleaning material 17 such as a sponge ball inside. The fixed position of the cleaning material storage container 15 is a position that matches one end of the movable tube 9.

In this device, when washing the inside of the movable transport pipe 11 and the fixed transport pipe 13 with water, the joint 8 connecting the discharge pipe 7 and the movable pipe 9 is removed, and the movable pipe 9 is rotated around the joint 10. Figure 5.
As shown in FIG. 6, one end of the movable tube 9 is connected to the cleaning material container 15 with a joint 8. When water is pumped from the water pipe 16 in this state, the cleaning material 17 is transferred to the movable pipe 9.
The cleaning material 17 pushes out the remaining concrete so that it does not mix with water, and moves sequentially through the movable transport pipe 11 and the fixed transport pipe 13.
1. Wash the inside of the fixed transport pipe 13 with water.

7 and 8 show other embodiments of the present invention, and the same parts as in FIGS. 3 and 4 are given the same reference numerals.

The concrete pump in this example is 2
The piston type pump 4 and the hopper 1 are the valve 1.
8, and the piston pump 4 is also connected to a Y-tube 20. In the piston pump 4 on the suction stroke side, the valve 18
opens and sucks in the concrete in hopper 1,
In the piston type pump 4 on the discharge stroke side, the valve 18 is closed, and the concrete that was sucked in in the previous process is discharged toward the Y-shaped pipe 20.

A movable tube 9 is connected to the tip of the Y-shaped tube 20 by a joint 8.
One end of the movable pipe 9 is connected, and the other end of the movable pipe 9 is rotatably connected to one end of a movable transport pipe 11 by a joint 10. The other end of the movable transport pipe 11 is connected to a fixed transport pipe (not shown).

In this embodiment, in the concrete pump described above, the cleaning material container 15 is fixed above the Y-shaped pipe 20 and the front side is opened, as shown in FIGS. 8 and 9. When washing the movable transport pipe 11 and the fixed transport pipe (not shown) with water, the joint 8 connecting the Y-shaped pipe 20 and the movable pipe 9 is removed, and the movable pipe 9 is rotated upward around the joint 10. Then, as shown in FIG. 10, one end of the movable pipe 9 is connected to the cleaning material storage container 15 through the joint 8, and water is pumped through the water distribution pipe 16. As a result, the cleaning material 17 is pushed out into the movable pipe 9, and the movable transport pipe 1
1. The fixed transport pipe (not shown) will be washed with water.

As mentioned above, the present invention bends both ends of the movable tube 90 degrees in the same direction, so that one end of the movable tube can be separated into a discharge tube, and the other end can be freely rotated into a transport tube. and a cleaning material storage container to which a water distribution pipe is connected, and the circular arc drawn by the discharge pipe connection side end of the movable pipe when the movable pipe rotates around the connection part with the transport pipe. Since the structure is such that the equipment is installed at a position on the trajectory of the pipe, when the inside of the transport pipe is washed with water after concrete pouring, one end of the movable pipe is disconnected from the connection with the discharge pipe and the movable pipe is turned into a pendulum type. One end of the movable tube can be immediately connected to the cleaning material storage container by simply swinging the tube, and the movable tube can be used to instantly and easily switch between pouring concrete and washing with water. There is no need to prepare a separate container or carry heavy objects, so the work requires less manpower and takes less time, and the remaining concrete on the pump side can be easily disposed of.

[Brief explanation of the drawing]

Figures 1 and 2 are vertical sectional side views of the conventional device, and Figure 3 is a vertical side view of the conventional device.
4 is a plan view of FIG. 3, FIG. 5 is a plan view showing a state different from FIG. 4, and FIG. 6 is a line taken along the line - cross section,
FIG. 7 is a cross-sectional plan view of another embodiment of the present invention;
The figures are a sectional view taken along the - line in Fig. 7, Fig. 9 is a front view taken from the - line direction in Fig. 8, and Fig. 10 is a front view showing a state different from Fig. 9. 1...Hopper, 4...Piston type pump, 9
...Movable pipe, 11...Movable transport pipe, 13...Fixed transport pipe, 15...Cleaning material storage container, 16...Water pipe, 17...Cleaning material.

Claims (1)

[Scope of utility model registration request] The above-mentioned discharge pipe and transport pipe in a concrete pump which has a pump that alternately sucks and discharges concrete in the hopper and transports concrete through a transport pipe through a discharge pipe connected to the pump on the discharge side. Both ends of a movable tube placed between are bent 90 degrees in the same direction, one end of the movable tube is separably connected to the discharge tube, and the other end of the movable tube is rotatably connected to the transport tube, and the position of the cleaning material storage container to which the water distribution pipe is connected on the locus of an arc drawn by the discharge pipe connection side end of the movable pipe when the movable pipe rotates around the connection part with the transport pipe. 1. A concrete transport pipe washing device, characterized in that the concrete transport pipe washing device is equipped with a cleaning material storage container, and is configured such that a discharge pipe connection side of the movable pipe can be connected to the cleaning material storage container.