JPH073778U - Underwater cleaning device - Google Patents

Abstract

(57) [Abstract] [Purpose] In a device for cleaning with a cleaning liquid and bubbles mainly composed of water, the cleaning effect is enhanced by spraying bubbles with a water stream onto an object to be cleaned. [Structure] When cleaning an object to be cleaned in a cleaning liquid mainly composed of water, a bubble generator 2 provided in a lower portion of a cleaning tank 1.
A rotary vane 3 for forming a water flow is provided in the lower portion of the cleaning tank 1 so that the air bubbles blown out of the cleaning device W are blown in and blown against the object W to be cleaned.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an apparatus for performing effective cleaning mainly with water, and in particular, a bubble generator that stores cleaning water and blows bubbles into the cleaning water at the bottom of a cleaning tank in which an object to be cleaned is immersed. The present invention relates to an underwater cleaning device equipped with.

[0002]

[Prior art]

 In the field of conventional industrial cleaning, CFCs, organic solvents, and special cleaning agents such as petroleum-based compounds have been used, but CFCs destroy the ozone layer, and organic solvents contaminate groundwater, rivers, and nearby waters. Since it has been regarded as the cause of secondary pollution, the momentum for solving these problems has increased. The inventor of the present invention also developed with the goal of obtaining a cleaning liquid mainly composed of water with a cleaning effect almost equal to that of using a conventional special cleaning agent, and applied for some of the results. . For example, the invention of Japanese Utility Model Publication No. 5-1357 is one of them, in which air bubbles are blown out from below the washing material and high-pressure water is jetted to induce cavitation due to the bursting of air bubbles and obtain the desired washing effect. Of. However, since the disclosed device merely blows air bubbles to the object to be cleaned, the degree to which the bubbles act on the object to be cleaned depends on the positional relationship between the bubble generating nozzle and the object to be cleaned.

[0003]

[Problems to be solved by the device]

 The present invention has been made in view of the above point, and its problem is to spray bubbles on the object to be cleaned with a water stream, thereby concentrating innumerable bubbles on the object to be cleaned and performing efficient water cleaning. To do so.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention provides a submersible cleaning device, in which a rotary vane 3 is installed in a lower portion of a cleaning tank, which entrains bubbles ejected from a bubble generator 2 and forms a water flow for spraying the object to be cleaned. It is a means to do.

[0005]

【Example】

 1 and 2 show a first example of an apparatus according to the present invention. This apparatus is a type in which an object to be cleaned W is immersed in a cleaning tank 1 for cleaning, and the object to be cleaned W is cleaned. It is set on a table 6 installed in the tank 1 and capable of passing bubbles and water flow. The cleaning tank 1 is a container into / from which an object to be cleaned W can be put in and taken out, and the inside thereof is filled with a necessary amount of a cleaning liquid L containing water as a main component. The object to be cleaned W is put in and taken out by a known method such as using a chain block, a hoist or other devices.

A bubble generator 2 is installed below the cleaning layer 1. The bubble generator 2 has a function of blowing innumerable bubbles into the cleaning liquid from a position below the object W to be cleaned. The illustrated bubble generator 2 has a large number of branch pipes 8 projecting in the tank center direction from a main pipe 7 provided along both sides of the lower part in the cleaning layer 1, and the nozzles 4 are provided respectively on the upper faces of the branch pipes 8, for example. The air is supplied from the air pipe 9 communicating with the main pipe 7 to the cleaning liquid. Reference numeral 10 denotes an air supply compressor connected to the air pipe 9.

The bubble generator 2 is provided at a relatively low position in order to send the floating bubbles to the object W to be cleaned. In the present invention, the rotating vane 3 that forms the water flow that entrains the bubbles is provided in the cleaning tank 1 so that the innumerable bubbles can be efficiently carried to the portion to be cleaned. The rotary blade 3 of the embodiment is provided close to the bubble generating nozzle 4. From the viewpoint of the positional relationship with the bubbles, the rotary vane 3 may be either a propelling type that pushes the water flow forward from the rear side of the bubble or a traction type arrangement that is in front of the bubble and sucks the bubbles together with the water flow. In the embodiment, the propulsion type is adopted. However, both schemes are feasible.

Since the rotary blade 3 forms a water flow toward the object to be cleaned W in the cleaning tank, any type can be used as long as it has a function of satisfying this purpose. For example, a screw propeller type having a plurality of separated blades, a disc type like a pulsator of a washing machine, or the like can be used as the rotating blades. Such rotary blades 3 may be provided not only on the lower portion of the side wall of the cleaning tank 1 but also on the bottom surface. Reference numeral 11 in each figure denotes a rotary blade drive unit, which uses an electric or air drive motor.

In such a configuration, when the cleaning tank 1 is filled with the cleaning liquid, the object W to be cleaned is set, and air is supplied to the bubble generator 2, at the same time when the rotary blades 3 are rotated, the air nozzle 4 generates air. Are blown out into innumerable bubbles, and a water flow is formed in the cleaning liquid by the thrust of the rotary blades 3, but the bubbles are entrained in the water flow and move along the streamline, and are formed by the rotary blades 3. Since the water flow is directed to the object to be cleaned W (see FIG. 3), countless bubbles will hit the object to be cleaned. The rotary vanes 3 may be provided for the purpose of forming a vortex that encloses the object W to be cleaned in the water flow.

In the apparatus according to the present invention, a water injection nozzle 5 for injecting a cleaning water flow at a higher pressure can be additionally provided inside the cleaning tank 1. The illustrated water injection nozzle 5 is of a type that injects the cleaning water flow toward the object to be cleaned W while rotating, and as shown in FIG. 6, a rotating shaft 12 through which the cleaning water flow passes, and a joint 13 at its tip. It is composed of a plurality of long and short rotary arms 5a and 5b attached via a water jet port 14 attached to their tips. The water jet nozzle 5 collides the bubbles in the cleaning liquid with a high-speed water stream to change them into fine high-speed bubbles, and is also used for the purpose of further improving the cleaning effect by the cavitation effect generated at that time. is there.

4 and 5 show a second embodiment of the device according to the present invention. This is an example in which the cleaning tank 1 is formed in the shape of a water channel, and a conveyor-like table 6 that is movable in the longitudinal direction is installed therein. Is. The base 6 is also in the shape of a saw and allows bubbles and water streams to pass therethrough. The bubble generator 2 is installed along the lower portion of the tank wall and blows bubbles from the left and right in the moving direction. A plurality of rotary blades 3 are installed above the air bubble generator 2 and on the tank wall below the object W to be cleaned at a predetermined interval. Further, water injection nozzles 5 are installed on the left and right wall surfaces and bottom surface of the cleaning tank 1 at required intervals.

In this example, the cleaning object W moves intermittently (may be continuous) by the table 6 and is washed at each position by air bubbles carried by the water flow formed by the rotary blades 3. Can be repeated multiple times. Further, during that time, high-pressure water is injected from the water injection nozzle 5, and high-level cleaning is performed. In the first and second embodiments, common reference numerals are used and description thereof is omitted. The cleaning liquid is preferably used after being heated to room temperature or higher, preferably 50 to 80 ° C., and the range of high pressure applied by the water injection nozzle 5 is 50 kg / cm ² or higher, but usually 100 to 150 kg / cm ^2. It carried out at ^2, as possible de be increased up to about 300kg / cm ² by the other necessary if it is very dirty.

In the device of the present invention, the innumerable bubbles that are blown up vigorously by the bubble generator 2 are further entrained in the water flow formed by the rotating blades 3 and collected toward the object W to be cleaned, and the object to be cleaned is innumerable. As well as wrapping with air bubbles, the air bubbles collide with and burst the dirt adhering to the object to be cleaned, causing vibration and rocking action, and cleaning. Further, when a high-pressure water stream is jetted from the water jet nozzle 5, the object W to be washed is washed with the water hammer energy while generating a vortex. The high-pressure water flow accelerates the bubbles to form fine high-speed bubbles, which collide with the object W to be cleaned and cause cavitation. Such an action extends to a portion that cannot be hit by merely spraying water, and the dirt is washed away by the combined action of the large momentum of bubbles and water flow, bubble collision, rupture, vibration and cavitation.

[0014]

[Effect of device]

 Since the present invention is configured and operates as described above, innumerable bubbles efficiently concentrate on the object to be cleaned by riding on the water flow formed by the rotary vanes 3 and burst to the object to be cleaned and its dirt. Since it works in every corner, it has the effect of improving the efficiency of the cleaning action by bubbles of water and further improving the pollution-free cleaning technology.

[Brief description of drawings]

FIG. 1 is a plan view showing a first embodiment of an underwater cleaning apparatus according to the present invention.

FIG. 2 is a side sectional view of the above.

FIG. 3 is an explanatory view of the same operation.

FIG. 4 is a plan view showing a second embodiment of the present invention.

FIG. 5 is a side sectional view of the above.

FIG. 6 is a front view of a water jet nozzle.

Claims (4)

[Scope of utility model registration request] 1. A bubble which is arranged at a lower portion of a cleaning tank 1 which stores a cleaning liquid mainly composed of water and in which the object to be cleaned can be immersed, and which causes bubbles to be blown into the cleaning liquid from below the object to be cleaned. In an underwater cleaning device equipped with a generator 2,
An underwater cleaning apparatus characterized in that a rotary vane (3) which encloses air bubbles blown out from the bubble generator (2) and forms a water flow for spraying the object to be cleaned is installed in the lower part of the cleaning tank. 2. A structure in which a plurality of rotary blades 3 are provided above the position of the nozzle 4 for blowing bubbles provided in the bubble generator 2 and behind the nozzle 4 with respect to the object to be cleaned. The underwater cleaning apparatus according to item 1. 3. The underwater cleaning apparatus according to claim 1, wherein a plurality of rotary vanes are installed around the object to be cleaned so as to form a spiral water flow surrounding the object to be cleaned. 4. The structure according to claim 1, further comprising a water injection nozzle 5 for injecting a cleaning water flow to the object to be cleaned at a high pressure from a lateral side or a vertical direction of the object to be cleaned. Underwater cleaning equipment.