JP4173754B2 - Cleaning device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cleaning apparatus that uses a jet flow in which a granular material is mixed in a cleaning liquid and enhances the cleaning action by the physical action of the granular material. Here, the cleaning action includes peeling and removing actions such as rust and painting.
[0002]
[Prior art]
A cleaning technique is known in which cleaning is performed by spraying an object to be cleaned with a jet flow in which powder particles are mixed in the cleaning liquid (see Patent Document 1). Washing using a jet flow in which this type of powder is mixed has a great effect on peeling and removing stubborn deposits firmly adhered to the object to be cleaned by the physical action of the jet flow. However, on the other hand, when there is no object to be cleaned, there is a problem that the high-speed jet flow including the powder particles ejected from the jet nozzle goes straight as it is, damages the irradiated part, and scatters violently around. Therefore, when the cleaning of the object to be cleaned is finished and the process proceeds to the next object to be cleaned, it is necessary to temporarily stop the injection and replace the object to be cleaned. And in stopping this injection flow, in addition to applying a great load on the high-pressure pump, it is technically difficult to stop the supply of the granular material quickly and accurately with the supply stop of the granular material. Therefore, it takes a certain time to stop the injection from the injection nozzle and restart the injection, which is a cause of restricting the operation efficiency. By the way, when stopping and restarting the supply of powder and granular materials are performed by stopping and restarting the supply mechanism itself such as a screw conveyor, the required time tends to increase, and the drive motor tends to have a shorter life. Also tied to. In addition, when the valve is used, early damage due to wear of the valve itself becomes a problem due to frequent opening and closing operations with respect to the supply path of the granular material.
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2001-310168
[Problems to be solved by the invention]
The present invention has been developed in view of the above-described conventional technical situation, and adopts a powerful cleaning action in which powder particles are mixed, while transitioning from the object to be cleaned to the next object to be cleaned. At the same time, it is an object to solve technical problems such as a decrease in operating efficiency associated with the prior art and early damage to valves, high pressure pumps and the like.
[0005]
[Means for Solving the Problems]
In the present invention, in order to solve the above-mentioned problem, in the cleaning apparatus provided with a spray nozzle that sprays a spray flow, in which powder particles are mixed in the cleaning liquid, on the object to be cleaned, such that the spray nozzle can move relative to the object to be cleaned, the spray nozzle In the relative movement range, provided an injection flow receiver that receives the injection flow injected from the injection nozzle and collects the cleaning liquid, and at the time of non-cleaning , the injection nozzle is moved to a position facing the injection flow receiver, As the jet from the injection nozzle and injected toward the receiving the jet adopts the technical means of the jet Ru on standby while recovering cleaning liquid received by said jet receiving. In the present invention, at the time of non-cleaning at the time of transition to the next object to be cleaned at the end of cleaning, the temporary stop of the injection from the injection nozzle, which has been conventionally performed, is stopped and the injection is continued by injecting toward receiving the jet, because adopting the technical means that while recovering the cleaning solution Ru is waiting on the start of the next wash, since it may begin immediately washed if necessary, the following It is possible to greatly improve the operation efficiency at the time of shifting to the object to be cleaned and to suppress the scattering of the cleaning liquid. In addition, since the supply of powder is not stopped, damage due to wear of the open / close valve or the like can be greatly reduced.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The present invention is suitable for removing stubborn deposits attached to the surface of a resin case for storing articles or the surface of a resin pallet, but is widely applicable to various objects to be cleaned. Can do. It is also suitable for rust removal and paint removal. There is no particular restriction on the cleaning liquid, and a form using only water such as tap water or a form using an appropriate liquid as the cleaning liquid, such as water added with a detergent, is possible. In addition, there is no particular restriction on the granular material mixed in the cleaning liquid, and the cleaning action is improved by the physical action of the granular material mixed with the cleaning liquid and sprayed on the object to be cleaned. Any material that is effective for removing stubborn deposits firmly attached to an object may be used. Regardless of the type of particle or particle size, depending on the type of deposit that adheres to the object to be cleaned, such deposits such as abrasives such as sodium bicarbonate and alumina What is necessary is just to select arbitrarily the granular material suitable for removal. In addition, it is also possible to heat a washing | cleaning liquid as needed.
[0007]
Settings regarding the number and arrangement of the injection nozzles can be freely set. One injection nozzle may be installed on each side of the object to be cleaned, or a plurality of injection nozzles may be arranged in the vertical direction. For example, one or several injection nozzles arranged in the vertical direction may be used, and the entire surface of the object to be cleaned may be cleaned while moving the nozzles up, down, left, and right. A plurality of spray nozzles may be arranged in parallel in the vertical direction so as to cover the entire vertical width of the object, and the entire surface of the object to be cleaned may be cleaned while relatively moving only in the horizontal direction. The point is that an injection flow receiver is provided in the relative movement range of the injection nozzle so as to receive the injection flow injected from the injection nozzle and collect the cleaning liquid. What is necessary is just to be comprised so that it can inject toward. The number of jet flow receivers installed may be the same as the number of spray nozzles, or the number of installations may be reduced by providing a common jet flow receiver. It is also possible to configure the jet flow receiver so that it can be moved as necessary. In addition, as for the form of the jet flow jetted from the jet nozzle, it may be jetted in a liquid form as long as the cleaning liquid mixed with the granular material is jetted. It may be in the form of jetting. In addition, with regard to the method of mixing the granular material into the cleaning liquid, the granular material is sucked by the ejector action by the high-speed jet flow of the cleaning liquid formed in the jet nozzle or in the vicinity of the jet outlet, or supplied using pressurized air. Any suitable form can be used as long as the powder can be mixed with the cleaning liquid.
[0008]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram showing a main part of an embodiment of the present invention, and FIG. 2 is a schematic side view of the embodiment. In this embodiment, a cleaning apparatus for a rectangular object to be cleaned will be described. In the figure, reference numeral 1 denotes an object to be cleaned that is placed upright on a conveyor 2 such as a chain conveyor. Reference numerals 3 and 4 denote injection nozzles disposed on both sides of the object 1 to be cleaned. As shown in FIG. 2, the spray nozzles 3 and 4 include a common cleaning liquid supply pipe 7 and a branched cleaning liquid supply pipe that store the cleaning liquid stored in the cleaning liquid tank 5 disposed below and pressurized by the high-pressure pump 6. 8 and 9, and the powder stored in the powder tanks 10 and 11 disposed above are connected to the screw supply mechanisms 12 and 13 and the powder supply pipes 14 and 15. Supplied through. In the injection nozzles 3 and 4, for example, the high-pressure cleaning liquid supplied through the cleaning liquid supply pipes 8 and 9 is injected as a high-speed injection flow, and the particles are ejected by the ejector action generated by the high-speed injection flow of the cleaning liquid. The desired granular cleaning is achieved by sucking the powder supplied through the body supply pipes 14 and 15 and spraying the powder to the object to be cleaned 1 by spraying it outside the nozzle with the powder mixed in the cleaning liquid. Will do.
[0009]
As shown in FIG. 1, in this embodiment, the start position of the movement of the injection nozzles 3 and 4 is set to a reference position A slightly higher than the object 1 to be cleaned, and the directing direction of the injection nozzles 3 and 4 is downward. Set in an inclined state. In the cleaning process, first, a cleaning liquid mixed with powder particles is sprayed onto the upper side of the object 1 to be cleaned including the upper surface while horizontally moving from the reference position A to the position B. When the horizontal movement is performed, if the directing direction of the injection nozzles 3 and 4 is set to be inclined with respect to the movement direction side, a stronger cleaning action can be obtained. When the spray nozzles 3 and 4 have moved outward from the object 1 to be cleaned, the side direction of the object 1 to be cleaned is changed by changing the directing direction to the inside. Next, the injection nozzles 3 and 4 are lowered from the position B to the position C with the side surface being cleaned. Thereafter, the cleaning liquid is sprayed onto the object to be cleaned 1 while moving horizontally from the position C to the position D. Also at this time, a strong cleaning action can be obtained by cleaning the article 1 with the spray nozzles 3 and 4 tilted toward the moving direction. Then, when the jet flow from the jet nozzles 3 and 4 deviates from the edge of the article 1 to be cleaned, the change in the directivity direction of the jet nozzles 3 and 4 is started and the directivity direction of the jet nozzles 3 and 4 is directed inward. The side of the object 1 is washed. After that, the spray nozzles 3 and 4 are lowered from the position D to the position E while keeping the side cleaning, and the spray nozzles 3 and 4 are moved horizontally to the positions F, G, H,. While repeating, the front and back surfaces and the side surfaces of the object to be cleaned 1 are cleaned.
[0010]
1 and FIG. 2 show the period during the non-cleaning period after the cleaning of the object to be cleaned 1 is completed and the cleaned object 1 is unloaded and the next object to be cleaned is set at the cleaning position. As described above, the injection nozzles 3 and 4 are moved to positions facing the injection flow receivers 16 and 17 disposed at positions away from the surface to be cleaned of the object 1 to be cleaned. Without stopping the injection, the jet flow is continuously sprayed toward the jet flow receivers 16 and 17, and the cleaning liquid that is received by the jet flow receivers 16 and 17 and falls is washed down by the liquid collection guide plate 18. While collecting in the tank 5 and collecting, it waits until the start of the cleaning of the next object to be cleaned. The feature of the present invention is exactly this point, and the next cleaning starts while continuing to inject the injection flow toward the injection flow receiver without stopping the injection from the injection nozzle when the object to be cleaned is replaced at the end of the cleaning. As described above, the cleaning can be started immediately as necessary, and the operation efficiency at the time of shifting to the next object to be cleaned can be greatly improved and the cleaning liquid can be scattered. It is also possible to suppress this. In addition, since the supply of powder and particles is not stopped, damage due to wear of the open / close valve and the like can be greatly reduced, and the supply of cleaning liquid by the high-pressure pump is not stopped, so that the life of the apparatus can be extended. An effect can be obtained. The cleaning liquid collected in the cleaning liquid tank 5 is, for example, a filtering means such as a filter (not shown) disposed between the liquid collecting guide plate 18 and the cleaning liquid tank or upstream of the high-pressure pump 6, The used granular material contained in the recovered cleaning liquid is removed by an appropriate precipitation removing mechanism for removing the precipitate, and then reused as the cleaning liquid.
[0011]
【The invention's effect】
According to the present invention, since the jet flow mixed with the granular material is used, the stubborn deposit firmly adhered to the object to be cleaned by the physical action of the granular material is more effectively peeled and removed. be able to. Moreover, the temporary cessation of injection from the injection nozzle which has hitherto been carried out during the non washing discontinued, moves to the position opposite to the receiving an injection nozzle jet, to continue the injection from the injection nozzle since the by injected toward the receiving prior Symbol jet, since employing the technical means that while recovering the cleaning solution Ru is waiting on the start of the next wash, may begin immediately washed if necessary, cleaned It is possible to greatly improve the operation efficiency at the time of shifting to the next object to be cleaned at the end, and to suppress the scattering of the cleaning liquid. In addition , since there is no suspension of supply of powder and granular materials, damage due to wear of the open / close valve etc. can be greatly reduced, and since supply of cleaning liquid by a high-pressure pump is not stopped, it is effective for extending the life of the equipment. is there.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram showing a main part of an embodiment of the present invention.
FIG. 2 is a schematic side view of the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... To-be-cleaned object, 2 ... Conveyor, 3, 4 ... Injection nozzle, 5 ... Cleaning liquid tank, 6 ... High pressure pump, 7-9 ... Cleaning liquid supply pipe, 10, 11 ... Powder tank, 12, 13 ... Screw Type supply mechanism, 14, 15 ... powder supply pipe, 16, 17 ... jet receiver, 18 ... collection guide plate

Claims (1)

In a cleaning apparatus in which a spray nozzle that sprays a spray flow in which powder is mixed into a cleaning liquid is provided to be movable relative to the object to be cleaned, the spray nozzle is sprayed from the spray nozzle within a relative movement range of the spray nozzle. An injection flow receiver is provided for receiving the injection flow to collect the cleaning liquid, and when not being cleaned , the injection nozzle is moved to a position facing the injection flow receiver, and the injection flow from the injection nozzle is transferred to the injection flow. receiving and injected toward the cleaning apparatus characterized by being configured to so that to wait while recovering cleaning liquid receiving the jet flow at the jet receiving.

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