JPH109124A - Washing device in fluid pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to carry out safely, simply and easily the work of insertion of a washing member for washing when the concrete pump and the piping are washed after the work of ready-mixed concrete depositing is finished. SOLUTION: A suction pipe 12 with a bent 13 is provided between a hopper 7 and a concrete pump, and a washing port 14 is provided at the bent 13 so that it is allowed to face to the opening of the hopper 7 as well as the pumping tube of the concrete pump. At the washing port 14 is provided a lid 16 which is able to open and close it. The washing port 14 is opened during the work of ready-mixed concrete depositing and it is closed during washing. Washing can be carried out by means of a washing member inserted through the washing port 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of a cleaning device for a fluid pump device.

[0002]

2. Description of the Related Art Generally, in a fluid pump, for example, a concrete pump, it is necessary to wash the fresh concrete every time in order to prevent the fresh concrete from remaining in the concrete pump or in a pipe in front of the concrete pump after the work of placing the ready-mixed concrete. . For this reason, an operator inserts a cleaning member such as a sponge into the concrete pump from the hopper conventionally connected to the concrete pump, and then operates the concrete pump to pump the cleaning member to clean the concrete pump and the piping. Is to be performed.

[0003]

However, with the above structure, when the cleaning member is inserted, since the insertion position is at the bottom of the hopper, a part of the worker's body is inserted into the hopper from above the hopper. And there is a disadvantage that work in a narrow place is required. In addition, a rotating blade is provided in the hopper to fluidize the ready-mixed concrete in the hopper and to guide it to the concrete pump side. Therefore, if the rotating blade is rotated by mistake while the cleaning member is being inserted, the operator is hurt. There is danger.

Accordingly, the present invention provides a cleaning device in a fluid pump device which enables the cleaning member to be easily inserted from outside the hopper, thereby facilitating the operation and ensuring the safety of the operator.

[0005]

According to the present invention, there is provided a fluid pump device having a hopper and a fluid pump for pumping fluid in the hopper at front and rear positions on a gantry, wherein a lower portion of the hopper is bent in an L-shape. One end of the suction pipe is connected, the other end of the suction pipe is connected to a fluid pump, and a cleaning port that can be opened and closed by a lid is formed on the outer periphery of a curved portion of the suction pipe.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall view of the present invention applied to a concrete pump truck, wherein 1 is a concrete pump truck;
Reference numeral 2 denotes a vehicle body of the concrete pump truck 1 which forms a gantry. A squeezable concrete pump 3 is provided on the vehicle body 2.
The concrete pump 3 has upper and lower ends projecting from both ends of a pumping tube 4, and a pipe 5 is connected to an upper end.

Reference numeral 6 denotes an auxiliary table which forms a part of a frame connected to the rear of the vehicle body 2, and on the auxiliary table 6, a hopper 7 for supplying ready-mixed concrete to the concrete pump 3 is provided. The hopper 7 has a shape capable of receiving and temporarily storing the ready-mixed concrete supplied from the mixer truck, and is attached to the auxiliary table 6 by a pair of right and left support legs 8.

An opening 9 is formed at the center bottom (most bottom) of the hopper 7, and the left and right bottoms of the hopper 7 are each slightly inclined toward the opening 9. A rotating shaft 10 is provided in the hopper 7 as shown in FIG. 3, and a plurality of blades 11 are attached to the rotating shaft 10 and the ready-mixed concrete in the hopper 7 is guided to the opening 9 by rotating the blades 11. It has become.

Reference numeral 12 denotes a suction pipe for communicating the concrete pump 3 with the hopper 7. The suction pipe 12 has a shape which is entirely curved into an L-shape as shown in FIGS. One end of the suction pipe 12 is connected to the opening 9 of the hopper.
And the other end is connected to the lower end of the pumping tube 4 of the concrete pump 3. As shown in FIG. 6, the opening 9 of the hopper 7 is provided around the curved portion 13 of the suction pipe 12.
A washing port 14 having substantially the same diameter as the inner diameter of the suction pipe 12 is provided at a position facing the pumping tube side of the concrete pump 3.

Since the washing port 14 is provided substantially immediately below the opening 9, the washing sewage in the hopper 7 can be discharged smoothly and without remaining, and a sponge or the like supplied to the concrete pump 3 side. The cleaning member 15 can be inserted smoothly. The cleaning member 15
Has an outer diameter slightly larger than the inner diameter of the suction pipe 12 so as to enhance the sealing performance.

Reference numeral 16 denotes a lid for opening and closing the cleaning port 14. The lid 16 is rotatably supported by an arm 17. The arm 17 has one end pivotally supported by the suction pipe 12 via a bracket 18 positioned below the cleaning port 14, the other end fixed to the engaged member 19, and the lid 16 pivotally supported at the center. The engaged member 19 has a cutout groove 20 at the center,
Bolt 21 and nut 22 located above cleaning port 14
The lashing device 23 can be lashed.

Reference numeral 24 denotes a seal member provided on the lid 16.
Although the embodiment has been described with the concrete pump for pumping the ready-mixed concrete, the invention is not limited to the ready-mixed concrete, and a fluid pump for pumping a fluid such as mortar or the like has the same effect. In the embodiment, the body of the concrete pump truck is used as the mount, but a stationary mount can be used. Further, although the lid is configured to be rotated by an arm, it is also possible to detach the lid and secure the outer periphery of the lid.

The present invention is constructed as described above. Next, the operation will be described. First, as shown in FIG.
Is supplied to the hopper 7 from the mixer truck in a state in which is closed. Thereafter, the blade 11 in the hopper 7 is rotated and the concrete pump 3 is operated. As a result, the ready-mixed concrete in the hopper 7 is
At the opening 9 side, and moves into the suction pipe 12 through the opening 9. At this time, since the cleaning port 14 is closed by the lid 16, fresh concrete does not leak from the cleaning port 14.

The ready-mixed concrete that has moved into the suction pipe 12 is guided into the concrete pump 3 by the suction force of the concrete pump 3, passes through the concrete pump 3, and passes through the pipe 5.
Pumped to the side. Thus, the ready-mixed concrete in the hopper 7 is poured into an arbitrary place. After the casting operation is completed, the hopper 7, the concrete pump 3, and the pipe 5 are washed.
That is, the washing water is stored in the hopper 7 to wash the ready-mixed concrete adhered and remaining in the hopper 7,
6 is opened as shown in FIG. At that time, since the bottom of the hopper 7 is inclined toward the opening 9 and the washing port 14 is located immediately below the opening 9, the washing sewage is discharged smoothly.

By the way, the rotation of the lid 16 is controlled by the securing device 2.
3 by loosening the nut 22 and removing the engaged member 19. In addition, although the washing is performed after storing the washing water, the lid 16 may be opened in advance and the washing may be performed at the same time as the washing. Next, the cleaning member 15 is inserted through the opened cleaning port 14 as shown in FIG. 7, pushed into the concrete pump 3 side, and the cleaning port 14 is closed with the lid 16. At this time, since the cleaning port 14 faces the concrete pump 3 side, the cleaning member 1
5 can be pushed and inserted smoothly.

When the washing port 14 is closed, the lid 16 is turned upward from the state shown in FIG. 6, the bolt 21 of the securing device 23 is inserted into the cutout groove 20, and the engaged member 19 of the arm 17 is And the nut 22 is tightened to secure the lid 16. Thereafter, the washing water is stored in the hopper 7, and the concrete pump 3 is operated. Then, the cleaning member 15 in the suction pipe 12 is drawn into the concrete pump 3 by the suction force of the concrete pump 3, and the cleaning water in the hopper 7 is drawn at the same time. By the way, the use of the cleaning water enhances the sealing property of the cleaning member 15 and increases the cleaning member 15.
It serves to wash out the ready-mixed concrete that cannot be removed at

The cleaning member 15 drawn into the concrete pump 3 is further fed under pressure to pass through the pipe 5. Thus, the ready-mixed concrete adhering to the inside of the concrete pump 3 and the inside of the pipe 5 can be removed. Cleaning member 15
Is discharged from the end of the pipe 5 to complete the cleaning operation.

[0018]

As described above, according to the present invention, the concrete pump and the hopper are communicated with each other through the suction pipe curved in an L-shape, and the curved portion of the suction pipe is provided with a washing port which can be opened and closed by the lid. This eliminates the need for a dangerous work in which an operator enters the hopper when the cleaning member is inserted as in the related art, and also eliminates the work in a narrow place in the hopper, thereby enabling safe and easy work. .

[Brief description of the drawings]

FIG. 1 is an overall view of a main part of a concrete pump truck equipped with the present invention.

FIG. 2 is an enlarged view of AA in FIG. 1;

FIG. 3 is a BB diagram of FIG. 2;

FIG. 4 is an enlarged view of the cleaning device.

FIG. 5 is a CC diagram of FIG. 4;

FIG. 6 is an operation state diagram when a cleaning port is opened.

FIG. 7 is a work state diagram of inserting a cleaning member into a cleaning port.

[Explanation of symbols]

 2 Body 3 Concrete pump 5 Piping 7 Hopper 9 Opening 12 Suction pipe 13 Curved section 14 Washing port 16 Lid

Claims (1)

[Claims] 1. A fluid pump device in which a hopper and a fluid pump for pumping fluid in the hopper are arranged at front and rear positions on a gantry, and one end of an L-shaped suction pipe is connected to a lower portion of the hopper. A cleaning device for a fluid pump device, wherein the other end of the suction pipe is connected to a fluid pump, and a cleaning port that can be opened and closed by a lid is formed on an outer periphery of a curved portion of the suction pipe.