JPH0852441A - Surface washing device - Google Patents

Abstract

PURPOSE:To wash the surface of a steel sheet by preventing splashing of washing water to the surroundings and soaking of the washing surface wet with water. CONSTITUTION:A washing nozzle 2 and a suction pipe 3 are arranged in juxtaposition to face downward. The circumference on the front end side of the washing nozzle 2 and the suction pipe 3 is enclosed by a washing water splashing preventive case 4, by which a washing device 1 is formed. A washing water force feeding line 6 is connected to the washing nozzle 2 so that injecting and stopping of the washing water W are executed by operation of a stop valve 8. The suction device 9 is connected via a waste water recovering line 10 to the suction pipe 3 so that the waste water W' of the washing water W is sucked.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface cleaning apparatus used for cleaning the surface of a steel sheet.

[0002]

2. Description of the Related Art A cleaning treatment for removing a fluorescent penetrant on a test surface used in a water-washable fluorescent penetrant flaw detection test in a surface cleaning or nondestructive test performed as one step of surface treatment of a general steel sheet, Conventionally, as a method of cleaning the surface of a steel plate such as the one described above, an operator holds the cleaning nozzle by hand and sprays high-pressure cleaning water from the cleaning nozzle toward the surface of the steel plate to clean it. A method is adopted in which treated water is allowed to flow without being collected.

[0003]

However, in the case of the above-mentioned conventional cleaning method, since the cleaning water is simply sprayed at a high pressure from the cleaning nozzle onto the surface of the steel sheet and is not recovered, the waste water treatment facility is not recovered. There is a problem that it cannot be carried out unless there is a certain place, and since it takes time to dry because the surface of the steel sheet is soaked in water, it cannot be immediately transferred to the next treatment step. Since it scatters when it hits the surface, there is a problem that the area around the washing part is also flooded.

Therefore, the present invention intends to provide a surface cleaning apparatus which does not flood the surface of a steel sheet with cleaning water or scatter the cleaning water around when cleaning the surface of the steel sheet with cleaning water. It is what

[0005]

In order to solve the above-mentioned problems, the present invention arranges a cleaning nozzle and a suction pipe side by side downward and arranges the cleaning nozzle and the suction pipe around the tip end side with a lower surface. A cleaning device is formed by integrally surrounding the opened cleaning water scattering prevention case, a cleaning water pressure feed line is connected to the cleaning nozzle, and a waste water recovery line equipped with a suction device is connected to the suction pipe. To do.

[0006]

[Function] The cleaning device is placed on the surface of the steel plate to be cleaned, and while the cleaning water sent through the cleaning water pressure feed line is sprayed from the cleaning nozzle toward the surface of the steel plate, the suction device is driven and the suction force is applied to the suction pipe. When the cleaning device is moved along the surface of the steel plate while operating, the surface of the steel plate is continuously cleaned as the cleaning device moves. At this time, the presence of the wash water splash prevention case surrounding the wash nozzle and the suction pipe prevents the wash water from splashing to the surroundings, and the waste water of the wash water is sucked by the suction pipe, so that the wash surface is submerged. Is prevented.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention, in which the cleaning nozzle 2 and the suction pipe 3 are arranged downward at a predetermined interval, and the cleaning nozzle 2 and the suction pipe 3 are arranged at the tip end side. The periphery is integrally surrounded by a wash water scattering prevention case 4 such as a hood having an open lower surface to form a washer 1, and a washing water pressure feed line 6 from a water supply source 5 is provided at the end of the washing nozzle 2 of the washer 1. Is connected via a joint 7 and an opening / closing valve 8 is provided at a position near the cleaning nozzle 2 of the cleaning water pressure feed line 6 to fix the opening / closing valve 8 to the outer surface of the suction pipe 3, and A wastewater recovery line 10 equipped with a suction device 9 is connected to the end of the suction pipe 3 via a joint 11,
The cleaning water W fed from the water supply source 5 through the cleaning water pressure feed line 6 is made to be jetted from the washing nozzle 2 toward the surface of the steel plate 12, and the waste water W ′ of the jetted washing water W is The suction device 3 is driven so that the suction pipe 3 sucks the waste water and the waste water collecting line 10 is used to collect (or discharge) the waste water to a predetermined location.

In the cleaning water splash prevention case 4, the front and rear lower edges facing the moving direction (the direction orthogonal to the paper surface) are slightly higher than the left and right lower edges along the moving direction so that the front and rear lower edges and the steel plate. A small gap is formed between the surface of the steel plate 12 and the low-friction members 13 made of a fluororesin to the left and right lower edges so that the steel plate 12 can move smoothly. .

When cleaning the surface of the steel plate 12, as shown in FIG.
As shown in FIG. 5, the cleaning device 1 is placed on the surface of the steel plate 12, and the suction device 9 is driven to apply the suction force to the suction pipe 3 through the waste water recovery line 10 and to wash the cleaning water W from the water supply source 5. While spraying from the cleaning nozzle 2 through the cleaning water pressure feed line 6, the cleaning water splash prevention case 4 is attached to the steel plate 1.
The cleaning device 1 is moved in the front-rear direction as a whole along the surface of 2.

As a result, the surface of the steel plate 12 is continuously washed by the jetting action of the washing water W, and the waste water W'of the washing water W after being washed is continuously drawn by the suction pipe 3. Will be sucked in. At this time, since the cleaning nozzle 2 and the suction pipe 3 are surrounded by the cleaning water scattering prevention case 4, the cleaning water W sprayed from the cleaning nozzle 2 does not scatter to the surroundings. , Steel plate 12 after cleaning
Since the waste water W'is sucked and removed by the suction pipe 3, the surface of the is not submerged. Therefore,
The surface of the steel plate 12 can be dried in a short time.

Next, FIG. 2 shows an example in which the surface cleaning apparatus of the present invention is applied to a water-washable fluorescent penetrant flaw detection test in a nondestructive test of a welded portion or the like.

More specifically, the above-mentioned water-washable fluorescent penetrant flaw detection test includes, as a test procedure, pretreatment (cleaning the test surface) penetration treatment (applying a fluorescent penetrant to the test surface) cleaning treatment Excessive penetrant remaining on the surface is removed, but the observation is standardized, but if the surface cleaning device of the present invention is used in the above cleaning treatment, the surplus penetrant remaining on the test surface Can be removed.

Conventionally, when carrying out the above-mentioned water-washable fluorescent penetrant flaw detection test, usually, the inspection product is brought into a test equipment room made in a corner of the factory, and a cleaning treatment is performed using tap water, etc. Since the test surface is dried and observed, the test place is limited to the factory where the cleaning water treatment facility is located, and the cleaning waste water becomes industrial waste liquid. Therefore, in the conventional method, the size of the inspection object,
The test sites were limited, and it was not possible to carry out tests at any place, such as a large-sized one that was not portable.

In this respect, by using the apparatus of the present invention, it is possible to suck and observe the waste water immediately after cleaning the test surface, and it is possible to carry out on-site inspection even if the inspection object is large and cannot be carried. Further, if it is carried out in the facility shown in FIG. 2, the cleaning wastewater can be made to flow as general wastewater without being made into industrial wastewater.

The application example shown in FIG. 2 is similar to that shown in FIG. 1, in the middle of the cleaning water pressure feed line 6 for supplying the cleaning water W to the cleaning nozzle 2 of the cleaning device 1, At the end of the waste water recovery line 10 for interposing a cleaning water heating and pressurizing device 14 for heating and pressurizing W, and for recovering the waste water W ′ sucked by the suction pipe 3 of the cleaning device 1, a waste water recovery device is provided. 1
5, and a wastewater treatment device 16 for treating the wastewater recovered by the wastewater recovery device 15.

In the heating / pressurizing device 14, a heating container 19 having a double structure consisting of an inner tank 17 and an outer tank 18 is mounted on the upper end portion of a carriage frame 20, and the heating container 19 is provided with: A warmer 21, a thermometer 22, and a control box 23 are provided so that the wash water W in the warming container 19 can be maintained in a predetermined warmed state, and further, a pump 24 is provided in the bogie frame 20. Is installed, and the suction port of the discharge pipe 25 connected to the pump 24 is communicated with the bottom of the heating container 19, and the discharge port of the discharge pipe 25 is opened to the side of the carriage frame 20 through a joint 26. By the operation of the pump 24,
The cleaning water W heated in the heating container 19 is pressure-fed to the cleaning nozzle 2 of the cleaning device 1 through the cleaning water pressure-feeding line 6 connected to the discharge pipe 25 and the joint 26.
27 is a drain pipe, 28 is a return pipe, and 29 is a pressure gauge.

The waste water recovery device 15 is equipped with a suction device 32 at the top of a waste water recovery container 31 that can be conveyed by wheels 30, and by driving the suction device 32, a suction port 33 is provided.
A suction force is applied to the suction pipe 3 of the washer 1 via the waste water recovery line 10 connected to the suction line 3, so that the suctioned cleaning waste water can be recovered in the waste water recovery container 31. Reference numeral 34 indicates a carrying handle.

The wastewater treatment device 16 includes a wastewater treatment tank 37 such as an activated carbon adsorption tower having a receiving pipe 35 and a discharging pipe 36, and a wastewater storage tank having two receiving nozzles 38 and 39 and one discharging nozzle 40. 41 and a switching valve 4 provided in the middle of the receiving pipe 35 of the wastewater treatment tank 37
2 and one receiving nozzle 38 of the waste water storage tank 41 through a pipe 43
And the discharge pipe 36 of the wastewater treatment tank 37 is connected to the other receiving nozzle 39 of the wastewater storage tank 41, and the discharge nozzle 40 of the wastewater storage tank 41 and the suction side of the pump 44 for the receiving pipe 35 of the wastewater treatment tank 37. Is connected by a pipe 45, and a switching valve 46 provided in the middle of the discharge pipe 36 of the wastewater treatment tank 37.
The drainage pipe 47 is connected to the wastewater treatment device 3 and the wastewater recovered by the wastewater recovery device 15 and transferred through the transfer pipe 48 into the drum 49 is passed through the receiving pipe 35 through the operation of the pump 44.
7 so that the treated water can be treated, and the treated water can be put into the waste water storage tank 41 through the discharge pipe 36, or can be put into another drum can 50 through the discharge pipe 47. Waste water in 49 is temporarily put into the waste water storage tank 41 from the receiving pipe 35 through the pipe 43, and the waste water is fed to the pipe 45 and the receiving pipe 35 when necessary.
Through the waste water treatment tank 37.
Reference numeral 51 denotes a pump for the transfer pipe 48.

In the case of the application example of FIG. 2, since the waste water can be collected by the waste water collecting device 15 which can convey the waste water, it becomes possible to carry out the water-washable fluorescence penetration flaw detection test in a place other than the test room.
That is, the water-washable fluorescent penetrant flaw detection test, which is one of the non-destructive tests, uses water in the cleaning treatment performed after the permeation treatment,
Since the wastewater becomes an industrial waste liquid, it is usually carried out in a test room built in a corner of the factory. However, by using the above-mentioned cleaning device 1, the scattering of the cleaning water can be prevented and the waste water can be recovered by the waste water recovery device 15 which recovers the waste water, so that the test object can be cleaned without bringing it to the test room. By treating the wastewater with the wastewater treatment device 16, there is an advantage that the wastewater can be discharged as general wastewater without being converted into industrial wastewater. Further, the cleaning water sent to the cleaning device 1 is heated and pressurized by the cleaning water pressurizing device 1
Since the heating can be performed at 4, the surface of the steel plate 12 to be tested can be dried in a shorter time than in the case of the embodiment of FIG.

FIG. 3 shows another embodiment of the cleaning device 1, in which an inspection section for carrying out a water-washable fluorescence penetration flaw detection test is a steel plate 12.
This is particularly advantageous when it is applied to the lap welded portion 52 of a and 12b. That is, in the case of a lap joint, since there is a step between the steel plates 12a and 12b, the lower end of the wash water scattering prevention case 4 is stepped so as to correspond to this step, and the injection amount of the wash water W is as high as possible. In order to reduce the number, the open area of the lower surface of the wash water scattering prevention case 4 is reduced, and the wash nozzle 2 and the suction pipe 3 are arranged in a V shape in accordance with the open area.

Therefore, by using the cleaning device 1 shown in FIG. 3, the lap welding portion 52 can be reasonably cleaned with a small amount of cleaning water.

The present invention is not limited to the above-mentioned embodiment, and, for example, by adopting the example of FIG. 2 in the quick-drying dye penetrant flaw detection test which has been conventionally performed on a large structure, Needless to say, there is an advantage that powdery dust generated in such a test can be removed, and various changes can be made without departing from the scope of the present invention.

[0024]

As described above, according to the surface cleaning apparatus of the present invention, the cleaning nozzle for injecting the cleaning water and the suction nozzle for sucking the waste water of the cleaning water are arranged in a downward direction and integrated in the cleaning water scattering prevention case. Since the cleaning device is constructed by surrounding the cleaning device, it is possible to prevent the cleaning water from splashing to the periphery when the cleaning water is sprayed from the cleaning nozzle toward the surface of the steel plate, which is the cleaning surface. Since the waste water of the cleaning water can be sucked by the suction pipe, it can contribute to the early drying without having to soak the steel plate surface. Therefore, the surface cleaning of various steel plates, in particular, the cleaning in the penetrant flaw test. It has the excellent effect of being extremely advantageous when used for processing.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of a surface cleaning apparatus of the present invention.

FIG. 2 is a schematic diagram showing an example of application to a water-washable fluorescence penetration flaw detection test.

FIG. 3 is a schematic view of a cleaning device showing another embodiment of the present invention.

[Explanation of symbols]

 1 Washer 2 Washing nozzle 3 Suction pipe 4 Washing water scattering prevention case 6 Washing water pressure feed line 8 Open / close valve 9 Suction device 10 Waste water recovery line W Wash water W'waste water

Claims (1)

[Claims] 1. A washing device in which a washing nozzle and a suction pipe are both arranged side by side facing downward, and the periphery of the washing nozzle and the suction pipe on the front end side is integrally surrounded by a washing water splash prevention case with an open lower surface. A surface cleaning apparatus comprising a cleaning water pressure feed line connected to the cleaning nozzle and a waste water recovery line equipped with a suction device connected to the suction pipe.