JPH0442099A - Device for washing spot contaminated floor by radioactive substances - Google Patents

Abstract

PURPOSE:To intend firm removal of radioactive substances on a floor surface without any danger to a human body by providing a cover covering spot contaminated floor by the radioactive substances, members of washing equipment, a driving motor, a suction pump and a supplying measures of washing liquid. CONSTITUTION:The invented device has a tilted handle 25 and whole device is moved to a contaminated floor position by casters 26. Then, when a button 30 is pressed, a vacuum pump 21 sucks air in a cover 1 via a hose 20 and a suction hole 19, to make an inside of cover of negative pressure, and therewith the cover 1 descends against a driving spring 27 and contacts completely to the floor surface. After that, when an operating button 31 is pressed, a detergent valve of a washing tank 17 and a valve of a washing tank 16 open to supply a set amount of washing water to the floor surface. Subsequently, when a driving button is pressed, a driving motor 11 rotates and a washing brush 3 and a wiper 4 revolute as well as the washing brush 3 rotates, too. After washing washing out the radioactive substances on the floor surface in the cover 1, contaminators such as the radioactive substances and contaminated water are sucked through the suction hole 19 and the host 20, and is stored in a contaminator tank 23.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a radioactive material spot contaminated floor surface that can be reliably cleaned without expanding the contamination range of a floor surface that has been contaminated due to handling errors in a radioactive material handling facility, for example. Regarding cleaning equipment.

[Prior Art] Facilities that handle radioactive materials and radiation, such as research institutes, hospitals, and nuclear power plants, are operated under strict control. However, due to mishandling, radioactive materials may fall onto the floor.

Conventionally, the amount of radioactive material dropped on the floor was small, so people wiped the contaminated area of the floor with a rag or the like.

[Problems to be solved by the invention] However, this raises concerns about the effects of radioactive materials on the human body. This becomes a problem especially when it lasts for a long time or when there is a large amount of radioactive material.

On the other hand, various cleaning tools for cleaning floors of offices and the like have been proposed and used. If the radioactive materials are cleaned using a cleaning device that cleans by rotating a cleaning brush while spraying cleaning water, there is a risk that the radioactive materials on the floor may be scattered. Furthermore, it is difficult to completely remove radioactive materials on the floor with vacuum cleaners used for household purposes.

An object of the present invention is to provide a spot-contaminated floor cleaning device that reliably removes radioactive materials from the floor without posing any danger to the human body.

[Means to solve the problem] In order to solve the above problem, the following measures are taken.

A cover for covering a floor surface contaminated with radioactive material spots; a cleaning member disposed within the cover for cleaning the floor surface contaminated by radioactive material spots; a drive motor for driving the cleaning member; This apparatus is equipped with a suction pump for suction, and a cleaning liquid supply means for dropping the cleaning liquid onto the spot floor surface.

It is more effective if the cleaning member includes a cleaning brush and a wiper that wipes and cleans the floor surface. In addition, to prevent the cover that covers the floor from coming into close contact with the floor and cleaning liquid etc. leaking out of the cover during cleaning, the solution contaminated with radioactive substances will spread to the surrounding area and expand the contamination area. Even better if you arrange it.

In order to facilitate transportation, it is preferable that a running wheel is provided, and the cover is provided with respect to the running wheel so as to be able to rise and fall freely from the floor surface.

Furthermore, in order to simplify handling, it is preferable to include a waste tank connected to the suction pump and accommodating the sucked waste.

Furthermore, in order to drive the cleaning brush and wiper, the cleaning brush rotates and revolves within the cover,
It is good to have a planetary movement mechanism that revolves the wiper that wipes the floor.

[Function] In this invention, the spot floor surface is covered with a cover, the cleaning member brush cleans it, and the dirt on the floor surface is sucked up with a suction pump.

[Example] Embodiments of the invention will be described below with reference to the drawings.

The first embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a partially cutaway plan view of the apparatus of the first embodiment of the present invention. , Figure 2 is its bottom view.Cover 1
is a cover that covers the floor of the radioactive material spot. A rubber seal 2 is provided around the circumference of the lower end of the cover 1. This seal 2 is in close contact with the floor surface so that dirt does not leak out.
6, so that it can be raised and lowered freely.

Inside the cover 1, a rotating arm 5 is provided with a cleaning brush 3 that rotates to wipe the floor surface and a wiper 4 that wipes the floor surface.

A planetary motion mechanism is configured such that the rotation of the rotating arm 5 causes the cleaning brush 3 to rotate and the cleaning brush 3 and wiper 4 to revolve around each other. The cleaning brush 3 and wiper 4 constitute a cleaning member that cleans the floor surface. A rotating shaft 6 of the rotating arm 5 is supported by the cover 1 via a bearing 7. This rotating shaft 6 includes a pulley 8, a belt 9, a pulley 1
0 to the drive motor 11.

In addition, the rotating shaft 6 includes a pulley 12, a belt 13, and a pulley 14.
It is connected to the rotating shaft 15 of the cleaning brush 3 via.

However, the pulley 12 is fixed to the bearing 7. That is, the rotation of the drive motor 11 causes the rotation arm 5, rotation shaft 6, pulley 10, and belt 9 to rotate. This rotation of the rotating shaft 6 causes the swing arm 5 to rotate, and the cleaning brush 3 and wiper 4 to revolve. On the other hand, similarly, the rotation of the drive motor 11 causes the pulley 12 to
, the belt 13, the pulley 14, and the rotating shaft 15 are interlocked to rotate the cleaning brush 3.

The rotating shaft 6 is formed hollow. A hose 18 for cleaning supply, which will be described later, and a hose 20, for vacuum suction, which will be described later, are inserted into this hollow rotating shaft 6. A wash water tank 16 and a detergent tank 17 are provided on the top surface of the cover 1. A hose 18 that drops washing water and detergent from the washing water tank 16 and the detergent tank 17 onto the floor is inserted through the rotating shaft 6.

This washing water tank 16, detergent tank 17 and hose 1
8 constitutes a cleaning liquid supply means.

Further, the wiper 4 inside the cover 1 is provided with a suction port 19 for sucking dirt from the floor surface. This suction port 19 is connected to a suction pump 21 via a hose 20. The hose 20 passes through the rotating shaft 6. The hose 20 includes a hose 18 for discharging washing water or detergent;
This is a double pipe that doubles as a hose for suctioning dirt. This hose 20 has a universal rotary joint 22 (swivel joint) connected to the inlet and outlet of the rotating shaft 6. The suction port 19 is configured to revolve integrally with the cleaning brush 3 and wiper 4. This vacuum pump 2
1 is connected to a waste tank 23 that stores the sucked waste. The wash water tank 16, detergent tank 17, and waste tank 23 are detachable for replenishment and disposal.

A shaft 24 is erected on the back surface of the cover 1 so as to be tiltable at any angle. A handle 25 is provided at the upper end of this shaft 24. Casters 26 are provided at the bottom of the shaft 24 as running wheels. This caster 26 has a biasing spring 2 that biases the cover 1 upward.
7 is fitted. The cover 1 is movable up and down on casters 26.

When moving the device, the entire device is tilted by tilting the shaft 24, and the weight is placed on the casters 26.
It is designed to be moved by casters 26. The biasing spring 27 is used to raise the device slightly above the floor surface so that it can be easily handled. On the other hand, during cleaning, the device brings the cover 1 into close contact with the floor surface against the urging spring 27 due to its weight. Upper cover 2
8 is a removable cover that covers the entire device. The apparatus constructed as described above is operated as follows.

Operation: Tilt the handle 25, tilt the entire device, and move the device using the casters 26 to a position on the contaminated floor.

Next, when the button 30 is pressed, the vacuum pump 21 starts the hose 2
0. The air inside the cover 1 is sucked in through one suction port, and the inside of the cover 1 becomes negative pressure. Therefore, the cover 1 is lowered against the urging spring 27 and brought into close contact with the floor surface.

Then, when the operating button 31 is pressed, the detergent in the detergent tank 17 and the valve in the wash water tank 16 are opened, and a set amount of wash water is supplied to the floor surface via the hose 18. Next, when a drive button (not shown) is pressed, the drive motor 11 rotates and rotates the rotary arm 5 via the pulley 10, belt 9, pulley 8, and rotation shaft 6, and the cleaning brush 3 and wiper 4 are rotated. Make it revolve.

On the other hand, the cleaning brush 3 is similarly rotated via the rotating shaft 6, the belt 13, the pulley 14, and the rotating shaft 15 by the rotation of the drive motor 11.

As a result, the cleaning brush 3 wipes the floor surface using the cleaning water and detergent, and the wiper 4 wipes the floor surface, thereby cleaning the radioactive substance on the floor surface inside the cover 1. And suction port 19, hose 2
A vacuum pump 21 sucks dirt such as radioactive substances, washing water, detergent, etc. through the waste tank 23 .

When the vacuum pump 21 is stopped, the suction action is stopped, and the button 30 is also turned off, the drive motor 11 is stopped, and the cleaning operation is stopped. Then, the pressure inside the cover 1 increases, and the biasing spring 27 lifts the cover 1, returning it to a driveable state.

The above device has the following effects.

(1) Cover the spot floor surface with the cover 1, spray cleaning water and detergent onto the floor surface, sweep it with the cleaning brush 3 and wipe it with the wiper 4, and suction the dirt on the floor surface with the suction pump 21.

Therefore, radioactive substances on the floor can be removed without posing any danger to the human body. Furthermore, radioactive substances can be removed without scattering. Furthermore, since the dirt is vacuum-suctioned after or simultaneously with the cleaning brush and wiper cleaning the floor surface using cleaning water and detergent, the ability to remove radioactive substances is very high.

(2) The device is provided with casters 26, and the casters 2
6, a cover 1 is provided so that it can be raised and lowered from the floor surface, and when cleaning, the cover 1 is lowered to the floor surface, and when it is moved, the cover 1 is moved up and down from the floor surface.
raise it from the floor.

Therefore, the cover 1 does not become an obstacle during movement using the casters 26.

I-device 1λ Other embodiments are shown in FIGS. 3 to 6. Figure 3 is an oblique projection view, Figure 4 is a front view, Figure 5 is a side view, and Figure 6 is a side view.
The figure is a partially cutaway front view.

In this embodiment, only the cleaning brush 41 is directly connected to the drive motor 42 as a cleaning means. The rotating shaft 43 of the cleaning brush 41 is formed hollow. This hollow waste tank is connected to a suction pump 44 with a built-in motor. In other words, the suction port (not shown) is connected to the cleaning brush 4.
It is located within 1.

In order to increase the suction capacity, double inner and outer covers 45, 46 are provided. The cleaning liquid tank 47 is a tank containing cleaning liquid, and a set amount of cleaning liquid is pumped up by pushing the upper end of the tank. This cleaning liquid is discharged by a cleaning liquid nozzle 48 through a pipe. The shaft 49 is provided upright at the center of the upper surface of the cover 46 .

Further, a plurality of casters 50 are provided on the outer periphery of the cover 46. The operating lever 51 is a switch for driving the drive motor 42. The push button 52 is a switch for driving the suction pump 44.

According to this second embodiment, effects similar to those of the first embodiment can be obtained. Note that the present invention is not limited to the above two embodiments.

[Other Examples] In the above example, a planetary motion mechanism using a belt was used for the revolution of the wiper 4 and the rotation and revolution of the cleaning brush 3. However, other known mechanisms such as a known planetary gear mechanism or a differential gear mechanism may be used.

Furthermore, the same motor may be used to drive the cleaning brush 3 and the vacuum pump 44.

[Effects of the Invention As detailed above, this invention has the following effects. The spot floor surface is covered with a cover, cleaned with a cleaning member brush, and dirt on the floor surface is sucked up with a suction pump. Therefore, radioactive substances on the floor can be removed without posing any danger to the human body. It also scatters radioactive materials,
It can be removed without any problem. Furthermore, it has a very high ability to remove radioactive substances.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of one embodiment of the invention, FIG. 2 is a bottom view thereof, FIG. 3 is a perspective view of another embodiment, FIG. 4 is a front view thereof, and FIG. FIG. 6 is a partially cutaway side view of FIG. 4. 1.45.46... Cover, 3,41... Cleaning brush, 4... Wiper, 5... Rotating arm, 11.42
... Drive motor, 16... Washing water tank, 17...
- Detergent tank, 19... Suction port, 21.44... Suction pump, 23... Dirty tank, 26.50... Caster, 27... Biasing spring, 47... Cleaning liquid tank, 48...Cleaning liquid nozzle Fig. 1 Fig. 3 Fig. 2 Fig. 6 Fig. 4 Fig. 5

Claims (1)

[Scope of Claims] 1. A cover that covers a floor surface contaminated with radioactive material spots, a cleaning member disposed within the cover to clean the floor surface contaminated with radioactive material spots, a drive motor that drives this cleaning member, and the cover. 1. An apparatus for cleaning a floor surface contaminated with radioactive material spots, comprising: a suction pump for sucking dirt on the floor surface of the interior; and a cleaning fluid supply means for dropping the cleaning fluid onto the spot floor surface. 2. In claim 1, the cleaning member is a cleaning brush;
A radioactive substance spot contaminated floor cleaning device comprising a wiper that wipes and cleans the floor surface. 3. In claim 1, the cover that covers the floor is in close contact with the floor, and the floor surface of the cover is designed to prevent cleaning liquid etc. from leaking out of the cover during cleaning and spreading the solution contaminated with radioactive substances to the surrounding area and expanding the contaminated area. A spot-contaminated floor cleaning device characterized by a packing placed in the dressing area. 4. The spot-contaminated floor cleaning apparatus according to claim 1, further comprising a running wheel, and the cover is provided to be movable up and down from the floor with respect to the running wheel. 5. The radioactive substance spot contaminated floor cleaning apparatus according to claim 1, further comprising a filth tank connected to the suction pump and accommodating the suctioned filth. 6. The spot-contaminated floor cleaning device according to claim 2, further comprising a planetary movement mechanism in which the cleaning brush rotates and revolves within the cover and a wiper that wipes the floor revolves.