JP3072233B2 - Fluid transport pipe cleaning equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe cleaning apparatus for transporting fluids such as incinerated ash and ready-mixed concrete of fluidized coal.

[0002]

2. Description of the Related Art A conventional cleaning apparatus is disclosed in Japanese Utility Model Application Laid-Open No. 58-1979.
As shown in No. 3, a swingable switching device is provided between the rear pipe and the front pipe, and a delivery pipe is provided in the switching apparatus so as to be parallel to the rear pipe, and a front pipe is provided in the delivery pipe. When a cleaner piston for cleaning is inserted and the inside of the front pipe is cleaned, the delivery pipe is connected to the rear pipe and the front pipe by the switching device, and the cleaner piston can be pressure-fed into the front pipe. ing.

[0003]

However, the above structure has a drawback that the cleaning operation takes a long time since the cleaner piston must be inserted every time the cleaning operation is performed. In particular, when transporting incinerated ash etc. of fluidized coal that has a high adhesion rate to the inner surface of the pipe and requires periodic cleaning in a short period of time, workers are always required to insert the cleaner piston into the delivery pipe. I had to wait on site. Therefore, the present invention is to provide a cleaning apparatus for a fluid transport pipe, which can efficiently and continuously perform a cleaning operation.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a swingable connecting pipe for connecting a rear pipe extending from a fluid pump to a front pipe. the delivery tube so as to parallel with said rear pipe is provided, the front pipe via the connecting pipe, said switching device capable to communicate with the alternating and rear pipe and the delivery pipe is provided, wherein the delivery tube the front A plurality of cleaner pistons for cleaning the inside of the piping are housed, a stock hopper capable of supplying the inside of the delivery pipe is provided, and a plunger for delivering the cleaner piston to the switching device side is provided in the delivery pipe. It is characterized by the following.

[0005]

When the fluid is transported, the connection pipe is connected to the rear pipe by the switching device, and then the fluid is pumped from the rear pipe into the front pipe via the connection pipe by the fluid pump. When cleaning the front pipe by interrupting the transportation of fluid, after connecting the connecting pipe to the delivery pipe by the switching device, the cleaner piston automatically supplied from the stock hopper into the delivery pipe is used. It is sent out to the switching device side by a plunger, and is pressure-fed into the front pipe via the connecting pipe to clean the front pipe. After the washing, the fluid is transported again by connecting the connecting pipe to the rear pipe by the switching device.

At this time, a plurality of cleaner pistons are housed in a stock hopper standing above the delivery pipe, and after cleaning, the plunger is retracted.
The cleaner piston is automatically supplied into the delivery pipe, and waits for the next cleaning operation.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Reference numeral 1 denotes a pipe 1 for transporting a fluid by a fluid pump (not shown) such as a squeeze pump or a snake pump provided on the ground or on the vehicle body. The pipe 1 is composed of a rear pipe 2 extending from a fluid pump and a front pipe 3 for guiding a fluid conveyed by the fluid pump to a predetermined place. 4
Supported by a rear support 5 and a guide member 6 erected at
The front pipe 3 is supported by a front support 7 erected on a support frame 4.

A flexible connecting pipe 8 is provided between the rear pipe 2 and the front pipe 3, the front end of the connecting pipe 8 is connected to the front pipe 3, and the rear end is slid on the guide member 6. To communicate with the rear pipe 2. A delivery pipe 9 is provided above the rear pipe 2 so as to be parallel to the rear pipe 2, and the delivery pipe 9 is supported by the rear column 5 and the guide member 6.

The guide member 6 is provided with a switching device 12 comprising a sliding plate 10 and a sliding plate cylinder 11. The switching device 12 causes the rear end of the connecting pipe 8 to slide up and down. The front pipe 3 can communicate with the rear pipe 2 and the delivery pipe 9 alternately. That is, the sliding plate 10 is slidably supported vertically by holding portions 13 having a U-shaped cross section formed at both left and right ends of the guide member 6 and the rear end of the connecting pipe 8 is fixed to the sliding plate 10. I have.

Further, a pair of sliding plate cylinders 11 provided on the outer surfaces of the two holding portions 13 via brackets 14 are connected to the sliding plates 10 via connecting plates 15 so that the sliding plate cylinders 11 are connected. The connecting pipe 8 slides up and down together with the sliding plate 10 by the extension of the sliding plate 10 so that the connecting pipe 8 can communicate with the rear pipe 2 when the sliding plate cylinder 11 is reduced most and with the delivery pipe 9 when fully extended. It has become.

An opening 16 is provided at the upper center of the delivery pipe 9.
The opening 16 is provided with a stock hopper 18 capable of vertically storing a plurality of cleaner pistons 17 for cleaning the inside of the front pipe 3. The stock hopper 18 has a rectangular cross section and can accommodate the cleaner piston 17 in a state substantially parallel to the delivery pipe 9. As a result, the cleaner pistons 17 stored in the stock hopper 18 can be automatically supplied one by one into the delivery pipe 9 through the opening 16 under their own weight.

In the delivery pipe 9, a delivery pipe cylinder 19 is provided.
When the plunger 20 is driven backward, the tip of the plunger 20 retreats to the rear end position of the opening 16 or rearward thereof, and the cleaner piston 17 is moved to the delivery pipe 9.
The cleaner piston 17 can be moved forward by being positioned forward of the front end of the opening 16 when it is most advanced. At this time, the front end of the opening 16 is formed into a tapered portion 21 so that the cleaner piston 17 can move smoothly. A hole 22 penetrates through the plunger 20 in the center in the front-rear direction.
One end of a flexible hose 23 is connected to the rear end opening.

The other end of the hose 23 is connected to a high-pressure water pump through an insertion port 24 formed in the lower part of the delivery pipe 6, and is connected to the hose 23 and the hole 2 by the high-pressure water pump.
2, high-pressure water is guided to the front of the plunger 20, and the cleaner piston 17 can be pressure-fed to the front pipe 3 side. At that time, the plunger 2
Since the seal member 25 is provided on the outer peripheral portion of the front part 0, the water supplied to the front of the plunger 20 does not leak backward. Reference numeral 26 denotes a drain hole formed near the center of the lower part of the delivery pipe 9, and a plunger 20 is provided.
The water in the front closed delivery pipe 9 can be discharged.

Although the delivery pipe is provided above the rear pipe in this embodiment, the same operation and effect can be obtained by providing the delivery pipe at a horizontal position of the rear pipe. Although the connecting pipe is made flexible, even if an S-shaped pipe is used, the same function and effect can be obtained. In that case, the front pipe is provided at an intermediate position between the rear pipe and the delivery pipe, By swinging the connecting pipe around the front pipe, the connecting pipe can be alternately connected to the rear pipe and the delivery pipe.

The operation of the present invention will now be described with reference to FIG. 5. FIG. 5 is a diagram showing a state in which a fluid material is transported. At the lowest position, the connecting pipe 8 communicates with the rear pipe 2. The fluid material is the piping 2 at the rear of the fluid material pump.
Is transported through the connecting pipe 8 into the front pipe 3.
On the other hand, the open end of the delivery pipe 9 on the switching device 12 side is
And within the delivery pipe 9, the plunger 2
0 is in the rearmost position, and one cleaner piston 17 is supplied to the front of the plunger 20.

Next, when cleaning the inside of the front pipe 3 from the state shown in FIG. 5, the delivery pipe cylinder 19 is extended and the cleaner piston 17 is sent out together with the plunger 20 to the switching device 12 side. At this time, the cleaner piston 17 is connected to the delivery pipe 9
By the tapered portion 21 provided at the upper part in the inside, it is possible to send out smoothly. When the delivery pipe cylinder 21 is fully extended, the plunger 20 is at the most advanced position as shown in FIG. 6, and the distal end face of the cleaner piston 17 is sent to the extreme end on the switching device 12 side. As a result, the opening 16 is closed at the side outer peripheral surface of the plunger 20, and the cleaner piston 1 stored in the stock hopper 18 is closed.
7 is prevented from being supplied into the delivery pipe 9, and the delivery pipe 9 is sealed by the sealing member 25 of the plunger 20.

When the sliding plate cylinder 11 is extended from the state shown in FIG. 6 and the sliding plate 10 is raised together with the connecting pipe 8, as shown in FIG. It is in a state of being connected to the delivery pipe 9. At the same time, the open end of the rear pipe 2 is closed by the sliding plate 10. FIG.
From the state shown in FIG.
When the high-pressure water is supplied to the front of the plunger 20 through the through hole, the cleaner piston 17 located in front of the plunger 20 is pressure-fed into the front pipe 3 through the connection pipe 8 by the high-pressure water as shown in FIG. Becomes

When high-pressure water is further supplied, the cleaner piston 17 is pressure-fed to clean the inside of the front pipe 3. At this time, the high-pressure water does not leak to the rear of the plunger 20 by the seal member 25. Cleaner piston 17 is in front piping 3
When the water is discharged, the washing operation is completed, and the high-pressure water pump is stopped. Next, when the transport of the fluid is restarted from the state of FIG. 9 at the end of the cleaning operation, the cylinder 11 for the sliding plate is reduced, and the sliding plate 8 is lowered together with the connecting pipe 5, and FIG.
When the sliding plate cylinder 11 is contracted as shown at 0, the sliding plate 10 is at the lowest position and the connecting pipe 8 is in communication with the rear pipe 2. In the state of FIG. 10, the fluid is transported from the rear pipe 2 to the front pipe 3 via the connecting pipe 8 by the fluid pump. At the same time, the delivery pipe cylinder 19 is contracted to retreat the plunger 20, and the water in front of the plunger 20 is discharged from the drain hole 26.

Further, the delivery pipe cylinder 19 is minimized to move the plunger 20 to the rearmost position, and the cleaner piston 17 housed in the stock hopper 18 is automatically moved from the opening 16 by its own weight as shown in FIG. It is supplied into the delivery pipe 8. FIGS. 12 and 13 show another embodiment for cleaning the inside of the front pipe 3. In this embodiment, the cleaner piston 17 is sent to the front pipe 3 as shown in FIG.
The sliding plate 10 is lowered together with the connecting pipe 8, and the connecting pipe 8 is communicated with the rear pipe 2 at the lowest position.
The state shown in FIG. In the state of FIG. 12, the fluid is sent from the rear pipe 2 into the front pipe 3 via the connecting pipe 8, and the inside of the front pipe 3 is washed while the cleaner piston 17 is pressure-fed forward.

At this time, since the cleaner piston 17 is pressure-fed by the fluid, the front pipe 3 is transported while the fluid is being transported.
Cleaning inside can be performed. Further, since cleaning is performed with the open end of the delivery pipe 8 on the switching device 12 side closed by the sliding plate 10, the cleaning piston 18 in the stock hopper 18 is moved during the cleaning as shown in FIG. The cleaning operation can be performed more efficiently.

[0021]

As described above, the present invention provides a switching device for alternately connecting a front pipe to a rear pipe and a delivery pipe, and a stock hopper capable of accommodating a plurality of cleaner pistons above the delivery pipe. The cleaner piston can be automatically supplied from the stock hopper to the delivery pipe, and the cleaner piston can be pressure-fed to the front piping side. There is no need to supply the solution into the pipe, and continuous cleaning work can be efficiently performed in a short period of time.

[Brief description of the drawings]

FIG. 1 is a sectional view showing the whole of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 2;

FIG. 4 is an enlarged sectional view of a main part of the present invention.

FIG. 5 is a cross-sectional view showing a state during transportation of a fluid.

FIG. 6 is a cross-sectional view showing a state when a cleaner piston is delivered.

FIG. 7 is a cross-sectional view illustrating a state at the time of switching the connection pipe.

FIG. 8 is a sectional view showing a state at the time of cleaning.

FIG. 9 is a cross-sectional view illustrating a state after cleaning is completed.

FIG. 10 is a cross-sectional view showing a state at the time of switching the connection pipe after cleaning.

FIG. 11 is a cross-sectional view showing a state during transportation of a fluid after cleaning.

FIG. 12 is a cross-sectional view showing a state at the time of cleaning according to another embodiment.

FIG. 13 is a sectional view showing a state when a cleaner piston is supplied according to another embodiment.

[Explanation of symbols]

 2 Rear piping 3 Front piping 8 Connecting pipe 9 Delivery pipe 12 Switching device 17 Cleaner piston 18 Stock hopper 20 Plunger

Claims (1)

(57) [Claims] 1. A swingable connecting pipe for connecting a rear pipe extending from a fluid pump to a front pipe is provided, a delivery pipe is provided in parallel with the rear pipe, and the front pipe is provided. through a connecting pipe, with the switching device capable to communicate with the alternating and rear pipe and the delivery pipe is provided, wherein the delivery tube to a plurality housed cleaner piston for cleaning the inside of the front pipe, the delivery pipe stock hoppers capable of supplying to the provided, said the delivery tube, the cleaning device of the fluid substance transportation pipeline formed by providing a plunger for feeding said cleaner piston to the switching apparatus.