JPH0975878A - Removing device for sludge in piping - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sludge removing device for automatically removing sludge adhering or accumulating in a sludge water recording piping. SOLUTION: Annular scraping blades 3a and 3b are fixed on a moving body 1 constituted of supporting frames assembled in the basket shape at the given intervals in the pipe axial direction. The scraping blade 3a is slightly smaller than the inner diameter of a pipe 6, and the scraping blade 3b is formed still smaller, and both are formed symmetrically, light and left. A wire 5 is connected with connecting fitments 4 installed on both ends of the moving body 1, and the wire 5 is drawn by a drawing device 10 composed of a sieve 12 driven by a motor 11, and the moving body 1 is moved forward or backward inside the pipe by the rotation of the motor 11, which is sequence controlled in the forward or backward direction to scrape sludge adhering or accumulating inside the pipe by the scrapers 3a and 3b and remove the same.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a sludge removing device in a pipe through which sludge water passes.

[0002]

2. Description of the Related Art When sludge accumulates in a pipe, the flow rate of sludge water flowing in the pipe decreases, and eventually clogging occurs. Therefore, in many cases, it is necessary to clean the sludge accumulated in the pipe regularly or as needed. For example, in the case of the sludge water recovery pipe of the converter exhaust gas treatment equipment, such cleaning is performed by stopping the equipment to stop the sludge water,
A method of removing a part of the recovery pipe that reaches several tens of meters with appropriate length and impacting with a hammer etc. to remove sludge, and a method of injecting high pressure water into the removed pipe or pipe to remove sludge It is being done by etc.

However, the above-mentioned conventional method has the following problems. (1) It is necessary to stop the sludge water treatment facility and stop the sludge water flowing in the sludge water recovery pipe before cleaning. (2) The period during which sludge water treatment equipment can be stopped is limited,
Since it is not possible to remove sludge on all lines within a limited period, it is necessary to remove sludge in every appropriate section, but pipe removal and installation work are required each time cleaning is performed. , Because that work takes time,
The time required for sludge removal is shortened, and therefore it takes a long time to remove sludge in the entire line. As a result, by the time the sludge removal on all lines is completed, the sludge will be deposited in the pipe that was initially used, and the flow rate will decrease.

(3) There is a foul odor and harmful gases such as carbon monoxide gas in the pipe, and the sludge contains harmful substances. Therefore, safety measures are taken when removing the sludge by removing the pipe. The sludge removal work cannot be performed without taking the steps described above, and each time the waste is disposed of, the sludge must be treated for detoxification and transported to a specific waste disposal site.

(4) A large amount of Fe ₂ O ₃ is contained in the sludge to be discarded, and it is not effectively used as a sinter ore used in the ironmaking industry because it can be recycled. (5) Since sludge is a heavy material, it is not easy to transport the removed sludge. (6) Many of the sludge recovery pipes are installed in high places or buried underground, and work conditions at high places and excavation work of the buried pipes are required, and working conditions are poor.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and provides a sludge removing device capable of removing sludge in a pipe without removing the pipe. It is what

[0007]

A sludge removing device of the present invention is a device for removing sludge that adheres to or accumulates in a pipe through which sludge water passes, and is movable in the pipe, and sludge water can flow inside or outside. A moving body having a structure or shape, an annular scraping blade that is attached to the moving body in a direction orthogonal to the pipe axis, and has a diameter slightly smaller than the inner diameter of the pipe, and a cord connected to both ends of the moving body. It is characterized by comprising a traction device provided.

According to this apparatus, when the moving body is pulled in one direction in the pipe, the scraping blade moves while scraping sludge adhered or accumulated in the pipe. The scraping blade has a scraping function only on the advancing side and may not scrape sludge when retreating inside the pipe and returning, but it is preferably configured symmetrically and scraped on both left and right sides. It has a take-out function and is adapted to scrape sludge when moving in either forward or backward directions.

A plurality of scraping blades are preferably arranged side by side at appropriate intervals in the tube axis direction, and each scraping blade is configured so that its diameter gradually decreases from the center toward the tip. . By arranging the scraping blades whose diameters gradually decrease toward the tip, the scraping is performed deeper and the scraping is relatively smooth, and the sludge is separated into smaller pieces.

The moving body is a frame, a cylinder, or the like in which sludge water can flow inside or outside, and a small size of sludge water that can flow outside, so long as it does not prevent the flow of sludge water. It may have a configuration or shape,
Both ends are preferably pointed or formed in a spherical shape so that even a bent pipe can be moved. Towing a moving body
For example, it is performed by a winding device. The winding device may be manually operated, but is preferably powered.

The pulling of the moving body is also carried out by connecting the rope and the moving body in an endless manner, and circulating the rope by a sheave or a sprocket which is driven manually, preferably by power. When the moving body is towed by power, the drive motor used is preferably controlled by a sequencer.

In another apparatus, a scraping blade is rotatably supported by a moving body, and a motor for rotating the scraping blade is provided. According to this device, sludge adhering to or accumulating in the pipe is scraped off and removed as the scraping blade moves forward or backward while rotating. It is preferable to provide a cleaning device equipped with a nozzle for cleaning the scraping blade at an appropriate position in the moving body or the pipe, and an inspection port at which the cleaning blade can be inspected at an appropriate position of the pipe. Is desirable.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, a sludge removing device has a bilaterally symmetrical shape, and a movable body 1 in which four curved fulcrums 2 are squeezed at both ends to form a cage, and a movable body 1 is mounted on the movable body 1. Four annular scraping blades 3a, 3a fixed to the pipe axially with a constant interval.
b, a wire 5 connected to connecting fittings 4 attached to both ends of the moving body 1, and a wire pulling device described later, and the pair of central scraping blades 3a has a diameter slightly smaller than the inner diameter of the pipe 6. The scraping blades 3b on both sides of the scraping blades 3a and 3b have smaller diameters. The left scraping blades 3a and 3b of FIG. 1 and FIG. ing.

As shown in FIGS. 2 and 3, the pipe 6 is long and has a lid 7 provided with outlets at both ends. The lid 7 has guide sheaves 8 and 9 (projecting in and out of the pipe 6). A guide sheave 8 on the right side of the drawing is provided), and a wire pulling device generally designated by 10 is provided on one lid 7 side. The traction device 10 includes a motor 11, a sheave 12 that is rotationally driven by the motor 11, a guide sheave 13, and a tension sheave 14 that removes slack of the wire 5, and has one end of the connecting fitting 4 of the sludge removing device 1. The wire 5 connected to the sheave 12, the sheave 12, the guide sheave 13, and the tension sheave 14 of the traction device 10 are hung on the guide sheave 9 through the guide sheave 8 and the outlet.
After circling around, the other end is connected to the connecting fitting 4 through the guide sheave 9, the outlet, and the guide sheave 8, whereby the moving body 1 advances or retracts in the pipe by the forward or reverse rotation of the motor 11. It is like this. In addition, in each of the outlets 7, the portion through which the wire 5 passes is sealed with a labyrinth packing so that gas inside the pipe does not leak to the outside.

In the figure, reference numeral 16 is an inspection port made of transparent acrylic resin. Below the inspection port, a washing pipe having a large number of nozzles 17 projecting downward is disposed, and the sludge removing device 1
A limit switch (not shown) for controlling the stop of the sludge is provided so that the cleaning water sprayed from the nozzle 17 can wash the scraping blades 3a, 3b of the sludge removing device 1, and the limit switch can move forward or backward. The mobile unit 1 is turned on to output an ON signal to a sequencer (not shown).

The sequencer controls the start and stop of the motor 11, and also controls the start and stop of a pump (not shown) connected to the cleaning pipe 18, to start and stop the motor 11.
The stop time, the number of revolutions, etc. can be changed according to the setting conditions input from the outside to the sequencer according to the degree of clogging of sludge, and the pump has a limit switch of O
When it becomes N and the sludge removing device 1 moves forward or backward and is stopped at the outlet, it is driven for a set time by a control signal from the sequencer.

This device is constructed as described above, and when the sludge removing device is continuously operated in a constant cycle, a stop time is set and inputted in advance to the sequencer (the moving speed of the device is usually set to be constant). is there). When the start button (not shown) is pressed after the above-mentioned condition setting is performed, the signal is input to the sequencer, and the sequencer starts the motor 11 accordingly. When the motor 11 is activated, the moving body 1 advances, for example, to the left in FIG. 2, and the left scraping blade 3
The sludge adhering to or accumulating in the pipe 6 is scraped off by a and 3b. When the mobile unit 1 reaches below the inspection port 15 and turns on the limit switch, the motor 11 is temporarily stopped by the output from the sequencer. Then, when the set time elapses, the motor 11 reversely rotates due to the output from the sequencer, and the moving body 1 retreats to the right in FIG. 2 to remove the sludge adhering to or accumulating in the pipe. The retreat is performed until the limit switch under the inspection port on the right side is turned on, and when the limit switch is turned on, it stops for a certain period of time. By repeating the above operation, the sludge in the pipe is removed at a constant cycle.

When setting the conditions for reciprocating the moving body continuously a certain number of times, for example, the stop time is set to 0, and the ON signal from the limit switch is counted to stop the motor when the set number is reached. It is better to let them do it. As a result, the moving body 1 continuously reciprocates, and stops when the reciprocation reaches a certain number of times.

[0019]

The present invention is configured as described above and has the following effects. According to the sludge removal device of claims 1 and 5, it is not necessary to stop the flow of sludge water in the pipe, sludge can be removed at one time in all lines of the pipe, and harmful odors and carbon monoxide gas in the pipe are harmful. Since it will not be exposed to harmful substances in gas and sludge, and sludge can be collected up to the water treatment facility without being scratched out of the pipe, it is easy to effectively utilize sludge such as recycling sludge,
In addition to the sludge removal work itself, there is an effect that work at a high place for removing sludge and excavation work are unnecessary.

With the scraping blade according to claim 2,
Sludge can be scraped in either forward movement or backward movement. According to the sludge removing device of the third aspect, the sludge attached or accumulated in the pipe can be scraped smoothly and in small pieces. According to the sludge removing device of the fourth aspect, the moving body can be moved even in a bent pipe.

According to the sludge removing device of the sixth aspect, the moving body is moved by the winding of the winding device, and according to the sludge removing device of the seventh aspect, the movement of the moving body is a sheave or a sprocket. It is performed by the rotation drive of. According to the sludge removing apparatus of the eighth aspect, the removal of sludge can be automatically performed according to the program installed in the sequencer.

If a cleaning device such as the sludge removing device according to the ninth aspect is provided, it is possible to maintain good scraping performance by cleaning the scraping blade. If the pipe is provided with an inspection port as described in claim 10, it is possible to know the state of the scraping blade, such as adhesion, deformation, and damage of sludge on the scraping blade.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of a sludge removing device according to the present invention.

FIG. 2 is a view showing one end of a pipe provided with a sludge removing device.

FIG. 3 is a diagram showing the other end of the pipe.

[Explanation of symbols]

1 ・ ・ Movable body 2 ・ ・ Bone 3a, 3b ・ ・ Scraping blade 4 ・ ・ Coupling metal 5 ・ ・ Wire 6 ・ ・ Pipe 7 ・ ・ Lid 8,9,13 ・
・ Guide sheave 10 ・ Trucking device 11 ・ ・ Motor 12 ・ ・ Sieve 14 ・ ・ Tension sheave 16 ・ ・ Inspection port 17 ・ ・ Nozzle 18 ・ ・ Cleaning pipe

Claims (10)

[Claims] 1. A device for removing sludge that adheres to or accumulates in a pipe through which sludge water passes, the moving body having a structure or shape capable of moving inside the pipe and allowing sludge water to flow inside or outside. It consists of an annular scraping blade that is attached to the moving body in a direction orthogonal to the pipe axis and has a diameter slightly smaller than the inner diameter of the pipe, and a traction device that has ropes connected to both ends of the moving body. A characteristic sludge removal device. 2. The sludge removing device according to claim 1, wherein the scraping blade is formed in a symmetrical shape so that the sludge can be scraped even when the scraping blade moves in either forward or reverse direction. 3. A plurality of scraping blades are arranged side by side at an appropriate interval in the tube axis direction, and the diameter of each scraping blade is gradually reduced from the center toward the tip. The sludge removal device according to 1. 4. The sludge removing device according to claim 1, wherein the moving body has a sharp end or a spherical shape. 5. A sludge removing device which adheres or accumulates in a pipe through which sludge water passes, the moving body being movable in the pipe and having a structure or shape capable of circulating sludge water inside or outside. It consists of a scraping blade that is rotatably supported by the moving body, a motor that is attached to the moving body and that drives the scraping blade to rotate, and a traction device that has ropes that are connected to both ends of the moving body. A sludge removal device characterized in that 6. The sludge removing device according to claim 1, wherein the towing device is a winding device. 7. The sludge removing device according to claim 1, wherein the traction device has a sheave or a sprocket for driving the endlessly connected cords. 8. The sludge removing device according to claim 5, wherein the traction device uses a motor controlled by a sequencer as a drive source. 9. The sludge removing device according to claim 1, wherein a cleaning device equipped with a nozzle for cleaning the scraping blade is provided at an appropriate position in the moving body or the pipe. 10. The sludge removing device according to claim 1, wherein an inspection port through which a scraping blade can be looked into is provided at an appropriate position of the pipe.