JPH0647352A - Washing apparatus - Google Patents

Abstract

PURPOSE:To automatically and continuously perform washing treatment, to adapt a washing apparatus in all of postures and to enhance working efficiency to a large extent by providing a supply device having a running truck, a washing tank and a spray nozzle and a suction device having a vacuum nozzle and a drain tank. CONSTITUTION:A washing apparatus 1 is equipped with the supply device 3 having a running truck 2 running along a washing surface, a washing tank 8 storing a washing solution and a spray nozzle 9 spraying the washing solution in the washing tank 8 in a foamed state and mounted on the running truck 2 and the suction device 4 having a vacuum nozzle 12 sucking the sprayed washing solution and sucking the drain tank 13 storing the sucked washing solution and mounted on the rear stage of the supply device 3 of the running truck 2. The washing solution is sprayed on the surface of an article to be washed in a foamed state from the spray nozzle 9 while the running truck 2 is allowed to run along the surface of the article to be washed and the washing solution is sucked by the vacuum nozzle 12 to be recovered in the drain tank 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning device for removing excess penetrant liquid, emulsifier and the like adhering to a test surface in a penetrant flaw detection test, and more particularly to improvement of cleaning efficiency.

[0002]

2. Description of the Related Art For example, a penetrant flaw detection test is carried out for periodic inspection of an LNG underground storage tank or an oil refining plant or for detecting a welded portion. In the penetrant flaw detection test, the surface of the defect to be inspected is coated with a penetrant with a strong penetrating power to allow it to fully penetrate the defects that are open on the surface, and then the penetrant of the surface is removed before the inside of the defect This is a method of detecting the position and size of a defect by sucking the permeating liquid soaked in the surface onto the surface and observing it directly or by illuminating it with an ultraviolet lamp.

In this penetrant flaw detection test, the following methods are adopted for the cleaning treatment and removal treatment of the penetrant liquid depending on the type of penetrant liquid used.

When the solvent-removable penetrant is used, the excess penetrant may be wiped off with a cloth or paper impregnated with the cleaning solution, or the powder may be removed by absorbing the excess penetrant. The penetrant liquid is removed by a method of sucking it with a knife.

When a water-washable and post-emulsifiable penetrant is used, the excess penetrant is washed away by pouring water with a spray nozzle, or the excess penetrant is blown off with a cloth or paper while spraying water. The penetrant is removed by the method.

[0006]

In any of the cases described above, the method of cleaning by blowing with cloth or paper is adopted, but in the case of blowing with cloth or paper, all work is done manually. It had the disadvantage of being inefficient. Also, LNG
There was also a safety problem in large-scale equipment such as underground storage tanks.

When the excess permeate is washed away, it is necessary to have a recovery facility for recovering the used cleaning water, and there is a disadvantage that the recovery facility becomes large when inspecting a large facility. In addition, it is necessary to move a large collection facility every time the inspection place is moved, which is a workability problem. Furthermore, after washing off, it was necessary to blow it off with a natural or dry cloth or paper, and there was a limit to the improvement of work efficiency.

The present invention has been made to solve the above disadvantages, and an object of the present invention is to provide a cleaning device capable of quickly and safely cleaning large equipment and the like.

[0009]

A cleaning apparatus according to the present invention comprises a traveling carriage that travels along a cleaning surface, a cleaning solution tank for storing a cleaning solution, and a cleaning solution stored in the cleaning solution tank in the form of foam. Traveling with a supply device equipped with a spray nozzle for spraying and mounted on a traveling carriage, a vacuum nozzle for sucking the cleaning liquid sprayed on the cleaning surface, and a drain tank for storing the cleaning liquid sucked by the vacuum nozzle And a suction device mounted at a rear stage of the feeding device of the cart.

[0010]

In the present invention, the cleaning surface is cleaned by spraying a foamy cleaning liquid onto the cleaning surface from the spray nozzle of the supply device while the traveling carriage is traveling along the surface of the object to be cleaned. The cleaning liquid sprayed and washed on the cleaning surface is forcibly sucked by the vacuum nozzle of the suction device provided at the subsequent stage of the supply device and collected in the drainage tank.

[0011]

1 is a block diagram showing a side wall cleaning apparatus according to an embodiment of the present invention. As shown in the figure, a cleaning device 1 used for a penetrant flaw detection test on a side wall of an LNG underground storage tank or the like has a traveling carriage 2, a supply device 3, and a suction device 4. Traveling trolley 2
Has a hoisting device 5 and is a rope 6 suspended from the top.
Is wound up by the hoisting device 5 to run along the side wall 7 to be inspected. The supply device 3 is mounted on the traveling carriage 2 and has a cleaning liquid tank 8 storing the cleaning liquid, a spray nozzle 9 having a tip protruding from the side surface of the traveling carriage 2, and an air for sending compressed air to the spray nozzle 9. A pressure source 10 such as a compressor or a cylinder. The suction device 3 is mounted rearward of the supply device 3 of the traveling carriage 2 in the traveling direction, is connected to the suction side of the vacuum pump 11, and has a vacuum nozzle 12 whose tip portion is provided so as to project from the side surface of the traveling carriage 2,
The drainage tank 13 is connected to the exhaust side of the vacuum pump 11.

Next, the operation of cleaning the penetrant liquid applied to the side wall 7 by the cleaning device 1 having the above-described structure will be described.

When conducting a penetrant flaw detection test on the surface of the side wall 7, the side wall 7 is first coated with a penetrant liquid. After that, the traveling carriage 2 is arranged near the lower portion of the side wall 7, and the hoisting device 5 is rotated.
Hang up 6 from the ceiling. Then, the hoisting device 5 is driven to raise the traveling carriage 2 along the side wall 7, and compressed air or the like is sent from the pressure source 10 of the supply device 3 to the spray nozzle 9. The spray nozzle 9 sucks the cleaning liquid stored in the cleaning liquid tank 8 by the flow of the compressed air sent, and sprays the foamy cleaning liquid onto the side wall 7 coated with the permeating liquid.

At the same time, the vacuum pump 12 of the suction device 4 is driven to start the suction operation by the vacuum nozzle 12.
The suction operation of the vacuum nozzle 12 causes a spray.
The cleaning liquid that has been sprayed from the nozzle 9 to the side wall 7 together with the excess permeating liquid is collected and sent to the drainage tank 13. By continuously performing this operation while moving the traveling carriage 2, it is possible to continuously perform the cleaning process of the side wall 7 coated with the penetrant liquid.

Further, after the cleaning liquid is sprayed on the side wall 7, the cleaning liquid together with the excess permeating liquid is immediately recovered by the vacuum nozzle 12, so that the dripping can be prevented and the cleaning liquid and the excess permeating liquid can be completely removed. Can be recovered and the development process of the next step can be continuously performed. Therefore, the penetrant flaw detection test can be performed efficiently.

Even when the developer or the like adhering to the side wall 7 is removed as a post-treatment after the completion of the penetration flaw detection test, it can be automatically removed in the same manner as described above.

Although the above embodiment has been described with respect to the case of cleaning the side wall 7 in the penetrant flaw detection test of the LNG underground storage tank or the like, by providing the wheels on which the traveling carriage 2 travels, a horizontal floor surface or the like can be similarly treated. Can be washed.

Further, although the above-mentioned embodiment has been described in the case of being used for the cleaning treatment and the removal treatment of the penetrant flaw detection test, it can be similarly applied to the cleaning of the wall surface of the building.

[0019]

As described above, the present invention cleans the cleaning surface by spraying the foaming cleaning liquid from the spray nozzle of the supply device onto the cleaning surface while the traveling carriage is traveling along the surface of the object to be cleaned. Since the cleaning liquid sprayed on the cleaning surface is forcibly sucked by the vacuum nozzle of the suction device provided at the latter stage of the supply device and collected in the drainage tank, the cleaning process is automatically continued. Can be done.

Further, by using a foamy cleaning liquid,
Since it can prevent dripping, it can be applied in all postures.Furthermore, since it sucks immediately with a vacuum nozzle, the cleaning liquid can be completely collected and there is no need to blow it off with cloth or paper. The efficiency can be greatly improved.

Furthermore, since the drainage tank of the recovery device is also mounted on the traveling carriage, it can be easily moved.

Further, since the cleaning liquid is foamy, it is liquefied after being collected, so that the capacity is small and the drain tank can be downsized.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a side wall cleaning apparatus according to an embodiment of the present invention.

[Explanation of symbols]

 1 Cleaning Device 2 Traveling Vehicle 3 Supply Device 4 Suction Device 8 Cleaning Solution Tank 9 Spray Nozzle 10 Pressure Source 11 Vacuum Pump 12 Vacuum Nozzle 13 Drainage Tank

Claims (1)

[Claims] 1. A traveling trolley having a traveling carriage that travels along a cleaning surface, a cleaning liquid tank that stores the cleaning liquid, and a spray nozzle that sprays the cleaning liquid stored in the cleaning liquid tank into a foam on the cleaning surface. And a suction device mounted at the latter stage of the supply device of the traveling carriage, which has a vacuum nozzle for sucking the cleaning liquid sprayed onto the cleaning surface and a drainage tank for storing the cleaning liquid sucked by the vacuum nozzle. A cleaning device comprising: