JPH1183809A - Liquid-waste recovery and labor saving type magnetic powder flaw detecting and inspecting method, and device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To save labor and improve inspection precision in magnetic powder flaw detecting inspection of a steel structure. SOLUTION: A work requiring two persons in the prior art is carried out by one person by attaching a spraying nozzle 7 for a magnetic powder liquid to an ultraviolet radiation irradiating lamp 6 to conduct spraying of the magnetic powder liquid and irradiation of ultraviolet radiation by a single hand, and by arranging a liquid-waste recovering device using a vacuum to recover easily and quickly a sprayed waste liquid. The magnetic powder liquid is fluidized all the time by providing a circulation hose for returning the magnetic powder liquid fed to the spraying nozzle 7 to a magnetic powder liquid tank 12 when not under spraying, spraying of the magnetic powder liquid in an insufficiently mixed condition caused by settling of the powder liquid due to its staying inside a feed hose 17 at the time of spraying stopping is prevented thereby, and the throughly mixed magnetic powder liquid is sprayed to provide an excellent flaw detecting effect.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for recovering a waste liquid for detecting magnetic steel particles from scratches on a steel structure that is difficult to fix or move.
The present invention relates to a labor-saving magnetic particle inspection method and apparatus.

[0002]

2. Description of the Related Art Conventionally, in the above-mentioned magnetic particle flaw inspection, an assistant cleans an inspection part, an inspector magnetizes a portion to be inspected with a magnetizer, and an oil-filled magnetic powder liquid container is used for the magnetized part. A magnetic powder solution is sprayed, and an assistant irradiates an ultraviolet irradiation lamp to a place where the magnetic powder solution is sprayed, an inspector visually inspects for a scratch, and the assistant wipes the sprayed magnetic powder liquid with a sponge or the like. Inspection by people was common.

In recent years, a magnetic powder liquid supply pump has been incorporated in a magnetic powder liquid tank made of a synthetic resin, and a supply hose for feeding the magnetic powder liquid from the magnetic powder liquid supply pump has been pulled out of the magnetic powder liquid tank. It is known that one person can continuously spray magnetic powder liquid and irradiate ultraviolet rays by connecting to the spray nozzle attached to the nozzle, and to save the trouble of refilling the magnetic powder liquid tank from the magnetic powder tank to an oil-filled magnetic powder liquid container. Have been.

[0004]

A supply hose is connected from a magnetic powder tank containing the above magnetic powder supply pump to a spray nozzle attached to an ultraviolet irradiation lamp to continuously spray magnetic powder and irradiate ultraviolet rays. What is done can greatly streamline the work compared to applying a magnetic powder liquid using an oil-filled magnetic powder liquid container, but the magnetic powder liquid is not sprayed continuously, and once sprayed, the next spray Until this time, the magnetic powder liquid in the supply hose is stagnant, during which time the magnetic powder in the hose precipitates, so that there is a problem that the magnetic powder liquid with a good stirring state cannot be sprayed at the next spraying.

[0005] Further, since the sprinkled magnetic powder liquid is wiped off by a sponge or the like after the inspection and is discarded by the assistant, it takes time and effort to wipe off and clean, so an assistant is required, and labor required by two people with the inspector is required. However, there is a problem that the bulk increases.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a method of supplying magnetic powder liquid to a magnetic powder liquid tank and a spray nozzle attached to an ultraviolet irradiation lamp. The circulation method of returning the liquid to the liquid tank allows the magnetic powder to always flow, prevents the magnetic powder from settling in the supply hose, and improves the inspection accuracy by spraying the well-stirred magnetic powder liquid.

Further, by providing a waste liquid collecting device utilizing a vacuum, it is possible to quickly and completely collect the scattered magnetic powder liquid, so that the inspector can collect the waste liquid, and an assistant is not required, resulting in a labor cost. Can be reduced.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention is to hold a magnetizer in a hand to magnetize a portion to be inspected, and further to hold an ultraviolet irradiation lamp provided with a spray nozzle connected to a magnetic powder liquid tank. Spray the liquid and irradiate it with ultraviolet light to perform a visual inspection, and then hold the waste liquid suction device that uses a vacuum connected to the waste liquid recovery tank in your hand to collect the sprayed waste magnetic powder liquid, and then This is a waste liquid collection / labor-saving type magnetic particle inspection method capable of performing magnetic particle inspection.

Further, in a magnetic particle flaw detector using a hand-held magnetizer and an ultraviolet irradiation lamp, a magnetic powder solution is supplied from a magnetic powder pump incorporated in a magnetic powder tank to a spray nozzle attached to the ultraviolet irradiation lamp. When the hose and the spray nozzle are not used, the circulation type magnetic powder solution supply device provided with a reflux hose for returning the magnetic powder solution sent from the supply hose to the spray nozzle to the magnetic powder tank, and collects the sprayed magnetic powder solution Equipped with a waste liquid recovery device with a waste liquid suction tool attached to the end of a waste liquid recovery hose consisting of a flexible hose extending from a waste liquid recovery tank with a vacuum generator, and a power supply device with an ultraviolet irradiation lamp stabilizer that drives these devices This is a waste liquid recovery and labor saving type magnetic particle flaw detector.

[0010] The magnetic powder liquid supply device, the waste liquid recovery device,
The power supply devices each having a portable and independent configuration can be placed on a hand cart and individually moved and used, and the collective movement is facilitated.

[0011] At the bottom of the magnetic powder solution tank of the magnetic powder solution supply device, there is provided a pump stationary portion for mounting the magnetic powder liquid supply pump, and the pump stationary portion is provided on the bottom surface other than the pump stationary portion so as to allow the magnetic powder to settle down. The magnetic powder is supplied to the magnetic powder liquid supply pump so that the magnetic powder flows downward, and the magnetic powder liquid supply pump sucks the magnetic powder.

[0012] The supply hose and the reflux hose of the magnetic powder liquid supply device are combined into a single tube to form a united tube so that the unit is easy to use and easy to use.

A spraying valve comprising a needle valve capable of adjusting the spraying ON-0FF and the spraying amount is provided in the spraying nozzle attached to the ultraviolet irradiation lamp, thereby facilitating use.

The waste liquid suction device of the waste liquid collecting device is provided with a hand switch, and is configured so that a brush can be implanted around the opening so as to be used also for cleaning the portion to be inspected.

A waste liquid collecting tank of the waste liquid collecting apparatus is provided with a liquid level control switch for automatically stopping the vacuum generator when the liquid level rises to a predetermined level or more, so that the collected waste liquid is discarded. .

The power supply device is provided with an outlet for the magnetizer and an outlet for an electric grinder for polishing an inspection location as needed.

An illumination lamp is attached to the ultraviolet irradiation lamp, and the inspection unit is illuminated by placing the ultraviolet irradiation lamp face down near the inspection unit. The inspection unit is polished with both hands using an electric grinder, and the detection is performed. You can check the condition of the wound.

[0018]

Embodiments will be described with reference to the drawings.
FIG. 1 is a plan view showing an example of the apparatus of the present invention, FIG. 2 is a front view, FIG. 3 is a right side view, and FIG.

In the drawing, 1 is a magnetic powder liquid supply device, 2 is a waste liquid recovery device, 3 is a power supply device, each of which is constructed as an independent portable type and has handles 11, 21 and 31. It is loaded on the hand cart 4 and can be moved collectively.

The magnetic powder liquid supply device 1 has a main body as a magnetic powder liquid tank 12, and has a pump insertion port 13 which can be opened and closed without using a tool on the upper surface, and is a submersible pump from the pump insertion port 13. The magnetic powder liquid pump 14 is fixed to a pump stationary part 15 formed on the bottom, and the pump stationary part 1
By setting the bottoms other than 5 as the inclined bottom 16 inclined downward toward the pump stationary part 15, the precipitated magnetic powder is caused to flow down toward the magnetic powder pump 14, and the magnetic powder pump 14 sucks and discharges together with water, so that it is always discharged. It is made to stir.

A supply hose 17 extends from the magnetic powder solution pump 14 to the outside of the magnetic powder solution tank 12 and is connected to a spray nozzle 7 provided with a spray valve 7 a attached to the ultraviolet irradiation lamp 6. A return hose 17a branched in the inside 12 is provided, and the excess magnetic powder liquid when the spray nozzle 7 is sprayed is returned into the magnetic powder tank 12 to stir the magnetic powder liquid.

Reference numeral 18 denotes a reflux hose, which is connected to the magnetic powder tank 12 from the spray nozzle 7 and is provided as a single double hose along the supply hose 17 so that the supply hose is supplied when the spray nozzle 7 is at rest. The magnetic powder liquid passing through the hose 17 is returned from the position close to the spray nozzle 7 into the magnetic powder tank 12 to agitate the magnetic powder tank. By providing the reflux hose 18, the supply hose 17 is sprayed. Nozzle 7
The magnetic powder liquid is always flowing even during the suspension of the operation, so that the magnetic powder liquid does not stay in the supply hose 17 and the magnetic powder precipitates when the conventional spraying is stopped, and the magnetic powder liquid in a good stirring state is sprayed at any time. The structure for circulating the magnetic powder solution is one of the major features of the present invention.

The waste liquid collecting device 2 is for collecting magnetic powder liquid sprayed for flaw detection inspection, and has a main body as a waste liquid collecting tank 22 and a vacuum generator 23 projecting upward. , A liquid level control switch 24 is provided inside.

A waste liquid recovery hose 25 composed of a flexible hose extends from the waste liquid recovery tank 22, and a waste liquid suction tool 8 with a hand switch 8a is attached to the end of the hose 25. The waste liquid suction tool 8 is located around the suction port. The brush-like configuration with the flocking 8b can be used also for cleaning the inspection location. The hand switch 8a is connected to the power supply device 3 by a cord 26 passing through the waste liquid recovery hose 25, and starts and stops the vacuum generator 23.

The waste liquid collecting device 2 is provided with a hand switch 8a.
To start the vacuum generator 23,
The vacuum is applied to the suction port of the waste liquid suction tool 8 at the place where the magnetic powder liquid is accumulated, and the waste liquid is collected into the waste liquid collection tank 22 through the waste liquid collection hose 25. Can also be used.

When the liquid level in the waste liquid collecting tank 22 rises above a predetermined level, the liquid level control switch 24 is operated to stop the vacuum generator 23, and the waste liquid containing dust and the like in the waste liquid collecting tank 22 is disposed of. Is what you do. The provision of the waste liquid recovery device 2 is also a major feature of the device of the present invention.

The power supply device 3 includes an ultraviolet irradiation lamp stabilizer 32, connects the ultraviolet irradiation lamp 6 with a cord 33, and drives the magnetic powder pump 14 and the vacuum generator 23 through cords 34 and 35, respectively. In addition, outlet 38,
The outlet 38 has a magnetizer 5 and a cord 36.
The outlet 39 is connected to an electric grinder 9 for polishing the inspection location by a cord 37.

In some cases, the power supply device 3 or the cart 4 may be provided with a storage box for accommodating inspection tools, tools, and the like.

[0029]

The present invention is embodied in the form described above and has the following effects.

A magnetic particle liquid spray nozzle is attached to the ultraviolet irradiation lamp so that the magnetic particle liquid can be sprayed and irradiated with ultraviolet light with one hand, and a waste liquid collecting device is provided to quickly and easily use the vacuum to spray the waste liquid. By making it possible to perform the collection, the work that was conventionally performed by two assistants can be performed by one inspector who does not require an assistant, and labor costs can be significantly reduced.

By providing a reflux hose from the spray nozzle of the magnetic powder solution supply device to the magnetic powder solution tank, the magnetic powder solution tank is constantly circulated to stir the inside of the magnetic powder solution tank, and the supply hose constantly flows even during the suspension of spraying. Therefore, the magnetic powder does not settle in the hose, and the magnetic powder liquid that is well stirred is sprayed, so that the magnetic particle flaw detection accuracy can be improved.

In the magnetic particle flaw detector of the present invention, the magnetic powder liquid supply device, the waste liquid recovery device, and the power supply device have independent compact structures, so that they can be individually carried and manually operated. It is convenient to use because it can be easily moved in a lump by loading it on a trolley.

Since the bottom of the magnetic powder tank is inclined downward in the direction of the magnetic powder pump, the magnetic powder pump sucks the precipitated magnetic powder together with the water, thereby increasing the stirring efficiency.

A double-tube structure is provided in which a supply hose for supplying the magnetic powder from the magnetic powder tank to the spray nozzle and a reflux hose for returning the magnetic powder from the spray nozzle to the magnetic tank when the spraying is stopped are integrated. In addition, the cohesion is improved and workability can be improved.

When an ultraviolet lamp is provided with an illuminating lamp to detect a detected flaw, the ultraviolet irradiating lamp is illuminated by placing it near an inspection point, and is illuminated by an electric grinder using both hands. The inspection location can be polished, and the condition of the scratch can be clearly confirmed under illumination.

A hand switch is provided on the waste liquid suction tool, and a brush is formed by flocking the circumference of the opening, so that workability is improved and a suction effect is enhanced. .

By providing the liquid level control switch in the waste liquid collecting tank, it is not necessary to pay attention to the liquid amount in the tank, and the waste liquid can be collected with confidence.

[Brief description of the drawings]

FIG. 1 is an overall plan view of a magnetic particle flaw detector according to the present invention.

FIG. 2 is a front view of a main body portion of the magnetic particle flaw detector.

FIG. 3 is a side view of a main body of the magnetic particle flaw detector.

FIG. 4 is a diagram illustrating the configuration of the magnetic particle flaw detector according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Magnetic powder liquid supply apparatus 2 Waste liquid recovery apparatus 3 Power supply apparatus 4 Hand truck 5 Magnetizer 6 Ultraviolet irradiation lamp 7 Spray nozzle 7a Spray valve 8 Waste liquid suction tool 8a Hand switch 8b Flocking 9 Electric grinder 10 Illumination lamp 11 Handle 12 Magnetic powder liquid tank 13 Pump insertion port 14 Magnetic powder pump 15 Pump stationary part 16 Inclined bottom 17 Supply hose 17a Return hose 18 Reflux hose 21 Handle 22 Waste liquid recovery tank 23 Vacuum generator 24 Liquid level control switch 25 Waste liquid recovery hose 26 Code 31 Handle 32 Ultraviolet light Ballast 33,34,35,36,37 Cord 38,39 Outlet

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takeo Tomimura 1-20-11-8 Gion, Asaminami-ku, Hiroshima City Japan Sea Lake Co., Ltd.

Claims (10)

[Claims] A magnetizing device for magnetizing a portion to be inspected by hand, and further holding an ultraviolet irradiation lamp provided with a spray nozzle connected to a magnetic powder solution tank to spray magnetic powder onto the magnetized portion to be inspected; Conducting a visual inspection by irradiating ultraviolet rays, and then holding the waste liquid suction device using a vacuum connected to the waste liquid collection tank in hand to collect the sprayed waste magnetic powder solution to conduct a magnetic particle flaw inspection test by one person Waste liquid collection and labor-saving magnetic particle flaw detection inspection method. 2. In a magnetic particle flaw detector using a hand-held magnetizer and an ultraviolet irradiation lamp, a supply of magnetic powder is sent from a magnetic powder pump incorporated in a magnetic powder tank to a spray nozzle attached to the ultraviolet irradiation lamp. When the hose and the spray nozzle are not used, the circulation type magnetic powder solution supply device provided with a reflux hose for returning the magnetic powder solution sent from the supply hose to the spray nozzle to the magnetic powder tank, and collects the sprayed magnetic powder solution Equipped with a waste liquid recovery device with a waste liquid suction tool attached to the end of a waste liquid recovery hose consisting of a flexible hose extending from a waste liquid recovery tank with a vacuum generator, and a power supply device with an ultraviolet irradiation lamp stabilizer that drives these devices Waste liquid collection and labor-saving magnetic particle flaw inspection equipment, characterized in that: 3. A magnetic powder liquid supply device, a waste liquid recovery device,
3. The waste liquid recovery and labor saving type magnetic particle flaw detection inspection device according to claim 2, wherein the power supply devices each having a portable independent configuration are mounted on a hand truck. 4. A magnetic powder solution supply device, wherein a magnetic powder solution supply pump is provided at the bottom of the magnetic powder solution tank, and a pump is provided on a bottom surface other than the pump stationary portion so as to allow the magnetic powder to settle down. 3. The waste liquid recovery and labor saving type magnetic particle flaw detection inspection device according to claim 2, wherein the inspection device is inclined downward toward the stationary portion. 5. The waste liquid recovery and labor saving type magnetic particle flaw inspection apparatus according to claim 2, wherein the supply hose and the reflux hose of the magnetic particle liquid supply device have a double pipe structure. 6. The waste liquid recovery and power saving type magnetic particle flaw detection inspection device according to claim 2, wherein an illumination lamp is attached to the ultraviolet irradiation lamp. 7. A waste liquid recovery and labor saving type magnetic particle flaw detector as set forth in claim 2, wherein a spraying nozzle attached to said ultraviolet irradiation lamp is provided with a spraying valve capable of adjusting spraying ON-0FF and spraying amount. 8. The waste liquid suction device of the waste liquid collecting device according to claim 2, wherein the waste liquid suction device is provided with a hand switch, and a brush is implanted around the opening so as to be used also for cleaning the portion to be inspected. Waste liquid collection and labor-saving magnetic particle inspection equipment. 9. A waste liquid recovery and labor saving device according to claim 2, wherein a waste liquid recovery tank of the waste liquid recovery device is provided with a liquid level control switch for automatically stopping the vacuum generator when the liquid level rises above a predetermined level. Type magnetic particle inspection equipment. 10. The waste liquid recovery and power saving type magnetic particle flaw inspection apparatus according to claim 2, wherein the power supply device is provided with an outlet for the magnetizer and an outlet for an electric grinder for polishing an inspection location as needed.