JPWO2019035152A1 - Foam cleaning equipment - Google Patents

Abstract

The conventional foam cleaning apparatus has a problem that it is difficult to stably supply the foam during a long cleaning operation due to its structure. In the foam cleaning apparatus 10 of the present invention, mainly, the air compressor 11, the air conveyance pipe line 12, the pressure regulators 13, 14, the flow rate adjusting valves 15, 16, the air warmer 17, and the foam generation mechanism. 18, 19, 20, a foam transport pipe 21, a cleaning liquid storage tank 22, a cleaning liquid heating tank 23, a cleaning liquid transport pipe 24, an electric pump 25, and a foam discharge device 26. In the bubble generation mechanisms 18, 19 and 20, bubbles are generated via the respective reduced diameter portions 18F, 19F and 20C and the enlarged diameter portions 18G, 19G and 20D. With this structure, it is possible to generate bubbles in a plurality of systems, thereby realizing stable supply of bubbles and generating bubbles in a stable state that are difficult to liquefy.

Description

  The present invention relates to a foam cleaning device that cleans the interior of a cleaning object by pouring cleaning bubbles into the object to be cleaned such as piping of a building and flowing while filling.

  Pipes of general buildings and apartment buildings, for a long period of time, have various chemical stains such as cleaning chemicals, animal and vegetable oils, mold and sludge deposited on the inner wall surface, forming a slime. . Since such a pipe has a reduced function, cleaning work inside the pipe is required. Generally, there are chemical and physical cleaning methods and apparatuses.

  Chemically, there is a technique in which ozone-containing gas is filled into a water supply pipe at high pressure, bacteria that make slime are killed by strong oxidizing power and sterilizing power, and these are removed by running water (see Patent Document 1).

  Physically, there is a high pressure cleaning technique using high pressure gas and high pressure water. The mixing nozzle is provided with a mixing chamber on the front end side and an injection nozzle penetrating and integrated on the rear end side. The high-pressure gas is supplied from the cylinder through the pressure hose into the mixing chamber, and the high-pressure water is supplied to the injection nozzle by sucking up water and chemicals in the water tank with the electric pump through the pressure hose.

  The supplied high-pressure gas and high-pressure water are sufficiently mixed in the mixing chamber and then supplied into the exhaust pipe. The high-pressure gas is diffused in the exhaust pipe, so that water is bubbled violently and foamed in the exhaust pipe. A physical external force generated during the foaming is used to release deposits such as slime on the inner wall of the exhaust pipe (see Patent Document 2).

  Furthermore, in order to solve the problems of the cleaning method and the cleaning device, a liquid cleaning agent containing a small amount of chemicals and the gas pressure of a gas cylinder are used to generate a foam cleaning agent, and the foam cleaning agent is There is known a cleaning method and a cleaning apparatus that removes deposits by pouring into a pipe and reacting a foamy cleaning agent with deposits in the pipe (see Patent Document 3).

JP 2000-254609 A Japanese Patent No. 2677362 Japanese Patent No. 5666054

  The cleaning method and the cleaning apparatus using the foamy cleaning agent described in Patent Document 3 are the problems of the chemical cleaning method and the cleaning apparatus described in Patent Document 1 and the physical method described in Patent Document 2. The present invention has been made to solve the problems of the cleaning method and the cleaning apparatus.

  However, the following new problem also occurs in the cleaning method and the cleaning apparatus using the foamy cleaning agent described in Patent Document 3.

  In the foam cleaning apparatus described in Patent Document 3, a gas cylinder is used as a main driving source for generating a foam-like cleaning agent and feeding out the foam-like cleaning agent. For example, compressed nitrogen gas is stored in the gas cylinder, and the compressed nitrogen gas is used while being decompressed. And, for example, about 4 to 5 gas cylinders are loaded in the cleaning vehicle, and the used gas cylinder is replaced with a new filled gas cylinder, so that the bubble cleaning apparatus can be operated at all times. .

  Although depending on the type of the gas cylinder, the weight of the gas cylinder used in the foam cleaning apparatus is about 35 kg / piece, and when four cylinders are loaded on the cleaning vehicle, the total weight of the gas cylinder alone is 140 kg. And other members, such as a tank, piping, a hose, etc. which comprise the said foam washing | cleaning apparatus need to be loaded in a washing | cleaning vehicle. As a result, there is a limit to the number of gas cylinders that can be loaded when considering the weight of the washing vehicle. There is.

  On the other hand, it is necessary to increase the number of gas cylinders in order to cope with long-time cleaning work, and it is necessary to increase the load weight and load space of the cleaning car, which increases the size of the cleaning car, narrow alleys in Tokyo, etc. There is also a problem that the work area is limited. Furthermore, it is a heavy labor to take down the used gas cylinder from the washing car and load the filled gas cylinder, and there is a problem that it is not efficient from various viewpoints to use the gas cylinder for the foam cleaning device.

  Further, in the above bubble cleaning apparatus, the compressed nitrogen gas passes through the vacuum generation pump so that the liquid cleaning agent is sucked by the vacuum pressure, and the sucked liquid cleaning agent and the compressed nitrogen gas are generated in vacuum. Mixed in the pump. And the foaming cleaning agent is produced | generated by the cleaning agent expanded by the compressed nitrogen gas passing the filter arrange | positioned downstream from a vacuum pump.

  However, since the pipe line in the vacuum generating pump is narrow, the pipe line is clogged, so that the mixed operation of the compressed nitrogen gas and the liquid cleaning agent cannot be performed, and the stable foam-like cleaning agent There is a problem that supply is difficult. In addition, the downstream side of the vacuum generation pump has only one line through which the cleaning agent mixed in the vacuum generation pump flows. Therefore, when the pipe is clogged, it has a stable foam-like shape. There is a problem that it is difficult to supply the cleaning agent.

  Furthermore, the cleaning agent mixed in the vacuum generation pump passes through the filter disposed in the one line of the above-mentioned pipeline, and a foamy cleaning agent is generated. There is also a problem that even if clogging occurs, it is difficult to supply a stable foam-like cleaning agent. Moreover, since the structure which produces | generates a bubble through a filter will necessarily reduce the flow velocity in a filter part, there also exists a problem that the production | generation efficiency of a bubble will fall.

  The present invention has been made in view of the above circumstances, and by using an air compressor as a compressed air supply means, the apparatus can be reduced in size and weight, and cleaning bubbles can be provided in a plurality of paths. An object of the present invention is to provide a foam cleaning device that can supply a stable foam by generating the foam.

  In the foam cleaning apparatus of the present invention, an air compressor that supplies compressed air, an air conveyance pipe that conveys the compressed air, a storage tank that stores cleaning liquid, and an electric motor that sucks and pumps the cleaning liquid from the storage tank. A pump, a cleaning liquid transport pipe that transports the cleaning liquid, a foam generating mechanism that is connected to the air transport pipe and the cleaning liquid transport pipe and generates foam from a mixed fluid in which the compressed air and the cleaning liquid are mixed; , And a foam discharge device connected to the foam transport pipe, wherein the foam generation mechanism includes a plurality of parallel foam generation mechanisms arranged in parallel, and the parallel A merging foam generating mechanism disposed on the downstream side of the foam generating mechanism, and the air transport pipe and the cleaning liquid transport pipe are respectively branched into a plurality of pipes, For the bubble generation mechanism for parallel use Characterized in that it consolidated, respectively.

  In the foam cleaning device of the present invention, the foam generation mechanism includes a reduced diameter portion and an enlarged diameter portion connected to the reduced diameter portion. The merging foam generation mechanism generates the foam from the first foam generated by the parallel foam generation mechanism, and the foam has a particle size larger than that of the first foam. Is a small bubble.

  Moreover, in the foam cleaning apparatus of the present invention, the reduced diameter portion and the enlarged diameter portion are formed using a pipe and a joint connected to the pipe, and the reduced diameter portion includes the branched air transport pipe and the It is provided in the pipe connected on the upstream side with respect to the joint that joins the branched cleaning liquid conveyance pipe, and the enlarged diameter portion is the joint that joins.

  Moreover, the foam cleaning apparatus of the present invention is characterized in that a foam generation filter is not disposed in the foam generation mechanism and the foam transport conduit.

  In the foam cleaning apparatus of the present invention, an air warmer that heats the compressed air is disposed downstream of the air compressor in the air transport pipe, and the cleaning liquid transport pipe includes A cleaning liquid heating tank for heating the cleaning liquid is disposed between the storage tank and the electric pump.

  Moreover, in the foam cleaning apparatus of the present invention, the storage tank is divided into a cleaning liquid storage area for storing the cleaning liquid and a water storage area for storing water, and the cleaning liquid storage area is connected to the cleaning liquid transport pipe. In addition, the water storage area is connected to a water transport pipe that transports the water, and a high-pressure washing machine that sucks and pumps the water from the water storage area is disposed in the water transport pipe. At the same time, the water conveyance pipeline branches into a first water conveyance pipeline and a second water conveyance pipeline, and the first water conveyance pipeline releases high-pressure water pumped by the high-pressure washing machine. The second water transport pipe is connected to a high pressure water discharge device that discharges a mixed fluid of the high pressure water pumped by the high pressure washer and the compressed air supplied by the air compressor. It is connected to the device.

  In the foam cleaning apparatus of the present invention, mainly, an air compressor, an air transport pipeline for transporting compressed air, a storage tank for storing cleaning liquid, a cleaning liquid transport conduit for transporting cleaning liquid, a foam generating mechanism, And a foam conveyance conduit for conveying the foam. In the foam generation mechanism, a plurality of foam generation mechanisms are arranged in parallel to generate bubbles in a plurality of systems, and the bubbles are merged to generate even more delicate bubbles in one foam generation mechanism. . With this structure, the foam cleaning apparatus can realize a stable supply of foam. In addition, by using an air compressor, the foam cleaning device can be reduced in size and weight, and the cleaning vehicle can be reduced in size, so that it can be applied to construction sites in narrow alleys in Tokyo.

  Moreover, in the foam cleaning apparatus of the present invention, a reduced diameter part in which a part of the pipeline is reduced in diameter and an enlarged diameter part in which a part of the pipeline is enlarged are formed in the foam generation mechanism. And after producing | generating a 1st bubble from the fluid mixture of a washing | cleaning liquid and compressed air with the foam production | generation mechanism arranged in parallel, the 1st bubble is made to merge, and a more fine bubble by one foam production | generation mechanism Is generated. With this structure, the bubbles discharged from the bubble discharge device have a small particle size and become stable bubbles that are difficult to liquefy.

  Further, in the foam cleaning device of the present invention, in the foam generating mechanism, the joint that connects the air transport conduit that transports the compressed air and the cleaning fluid transport conduit that transports the cleaning liquid, and the upstream side of the joint are connected. The reduced diameter part and the enlarged diameter part of the bubble generation mechanism are formed using the piping. With this structure, the compressed air and the cleaning liquid can be vigorously collided with each other in the joint and mixed while being stirred, so that stable foam can be generated.

  Moreover, in the foam cleaning apparatus of this invention, the filter for foam production | generation can be abbreviate | omitted by forming a reduced diameter part and an enlarged diameter part using the internal diameter of the pipe line in a foam production | generation mechanism. With this structure, the clogging of the pipeline caused by the foam generation filter is prevented, and the foam cleaning device can realize a stable supply of foam.

  Further, in the foam cleaning apparatus of the present invention, an air warmer is disposed in the air transport pipe, and a cleaning liquid heating tank is disposed in the cleaning liquid transport pipe. With this structure, the foam generated by the foam generation mechanism is filled in an object to be cleaned such as piping of a building in a high temperature state. And the washing | cleaning effect is heightened by wash | cleaning the inside of piping etc. with the bubble of a high temperature state.

  In the foam cleaning device of the present invention, the storage tank is divided into a cleaning liquid storage area in which the cleaning liquid is stored and a water storage area in which water is stored. Then, the water storage area is connected to the high-pressure washing machine via the water conveyance pipe, so that the foam washing device can perform not only the bubble washing by the above-described bubble discharging device but also the high-pressure water washing and high-pressure water by the high-pressure water discharging device. Washing with foaming water by a mixed fluid discharge device in which compressed air is mixed can also be performed. With this structure, various cleaning methods can be realized at the construction site.

It is a systematic diagram explaining the structure of the foam cleaning apparatus which is one Embodiment of this invention. It is explanatory drawing explaining the foam production | generation mechanism of the foam cleaning apparatus which is one Embodiment of this invention. It is a systematic diagram explaining the structure of the foam cleaning apparatus which is other embodiment of this invention.

  Hereinafter, a foam cleaning apparatus according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2 based on the drawings. In the description of the present embodiment, the same reference numerals are used for the same members in principle, and repeated descriptions are omitted.

  FIG. 1 is a system diagram illustrating the configuration of the foam cleaning apparatus 10 of the present embodiment.

  As shown in FIG. 1, the foam cleaning apparatus 10 mainly includes an air compressor 11, an air transport pipe 12, pressure regulators 13 and 14, flow rate adjusting valves 15 and 16, an air warmer 17, It has a foam generation mechanism 18, 19, 20, a foam transport line 21, a cleaning liquid storage tank 22, a cleaning liquid heating tank 23, a cleaning liquid transport line 24, an electric pump 25, and a foam discharge device 26. ing. In addition, each pipe line 12, 21, 24 is provided with a joint at an appropriate position, and the length and the pipe path of each pipe line 12, 21, 24 are adjusted.

  The foam cleaning apparatus 10 has, for example, three foam generation mechanisms 18, 19, and 20, and bubbles generated by the foam generation mechanisms 18 and 19 are merged by the foam generation mechanism 20. Then, when the merged bubbles pass through the bubble generation mechanism 20, extremely finer bubbles are generated. Furthermore, the stable supply of bubbles is realized by generating bubbles in two systems of the bubble generation mechanisms 18 and 19 on the upstream side of the bubble generation mechanism 20.

  The foam generated by the foam generation mechanism 20 is poured into a cleaning target such as a piping of a building through the foam discharge device 26, so that the inside of the cleaning target is filled with the foam. The foam slowly flows through the inside of the object to be cleaned by being pushed by the foam to be filled later, but the foam wraps around oil stains and the like that spreads in the inside and chemically cleans it. At this time, by generating bubbles in stages using the bubble generation mechanisms 18, 19, and 20, the bubbles are finally extremely fine and stable, and the liquefaction of the bubbles is greatly delayed. Can do. As a result, it is possible to maintain the state where the interior of the object to be cleaned is filled with bubbles to the end, and to effectively clean the entire interior surface of the object to be cleaned. The term “cleaning” as used herein is a concept that includes cleaning the pipe, sterilization, pest control, mold removal, and the like.

  The air compressor 11 is, for example, a high-pressure compressor, has a high-pressure coupler at the air outlet, and can send high-pressure compressed air up to about 3.5 MPa. The air compressor 11 is provided with a pressure reducing adjustment valve, and can be adjusted to a desired pressure when the compressed air is sent out from the air compressor 11. Although the air tank capacity of the air compressor 11 is about 12 L, when a large amount of compressed air is used according to the amount of work at the time of cleaning, a sub tank (not shown) is provided near the outlet of the air compressor 11. ), And the compressed air may be stored appropriately.

  The air conveyance pipeline 12 is composed of, for example, a high-pressure rubber hose or a high-pressure vinyl hose. In the present embodiment, the first air conveyance pipeline 12A, the second air conveyance pipeline 12B, and the third air conveyance pipeline 12C. have. In addition, although the case where the air conveyance pipe line 12 is comprised from the said high voltage | pressure rubber hose etc. is demonstrated, it is not limited to this case. For example, a high pressure metal pipe such as a stainless steel pipe may be used as the air conveyance pipe 12. In addition, the temperature of the compressed air flowing through the air conveyance pipe 12 can be reduced as much as possible by winding a heat insulating material around the air conveyance pipe 12 or using a heat insulating material as the air conveyance pipe 12. Can be prevented.

  The first air conveyance pipe line 12 </ b> A is connected to the air compressor 11 at one end side thereof, thereby flowing the compressed air sent out from the air compressor 11 to the downstream side. Although details will be described later, the other end side of the first air conveyance pipe line 12A is connected to a cheese 27 which is a pipe joint, and the compressed air pipe path is branched from one system to two systems. And the one end side of the 2nd air conveyance pipeline 12B and the 3rd air conveyance pipeline 12C is connected with the said cheese 27, and other than the 2nd air conveyance pipeline 12B and the 3rd air conveyance pipeline 12C The end sides are connected to the foam generation mechanisms 18 and 19, respectively.

  The pressure regulator 13 is disposed in the first air conveyance conduit 12A, and reduces the pressure of the compressed air sent out from the air compressor 11 to a desired pressure. For example, the pressure regulator 13 reduces the pressure from 3.5 MPa, which is the primary side pressure, to 0.8 MPa, which is the secondary side pressure. The compressed air is adjusted to a desired pressure via the pressure regulator 13 while observing the state of the bubbles generated by the bubble generation mechanism 20.

  The flow rate adjustment valve 15 is disposed in the first air conveyance conduit 12A on the downstream side of the pressure regulator 13, and the flow rate of the compressed air flowing through the first air conveyance pipeline 12A is adjusted. Then, similarly to the pressure regulator 13, the flow rate of the compressed air is adjusted to a desired flow rate via the flow rate adjustment valve 15 while observing the state of the bubbles generated by the bubble generation mechanism 20.

  The air warmer 17 is, for example, a screw-in shell heater, and is disposed in the first air conveyance pipe 12A on the downstream side of the flow rate adjustment valve 15 to heat the compressed air whose pressure and flow rate are adjusted. To do. As will be described in detail later, by mixing heated compressed air and heated cleaning liquid, generating heated foam and flowing it into the object to be cleaned, the ability to decompose oil by activating the cleaning liquid It is possible to increase the cleaning ability. The compressed air is heated to, for example, 60 to 75 ° C. by passing through the air warmer 17. In order to stabilize the heating temperature, the two air warmers 17 are connected to the first air heater 17. It may be arranged in series with the air transport pipe 12A.

  The foam generation mechanism 18 mainly includes a stainless steel pipe 18A, an air valve 18B, a check valve 18C, a liquid valve 18D, a check valve 18E, a cheese 18H, and a foam valve 18I. Yes. The pipe 18A is configured by combining a plurality of pipes having different inner diameters, so that a reduced diameter part 18F and an enlarged diameter part 18G are formed in the bubble generating mechanism 18. The pipe 18A is not limited to a stainless steel pipe, and a high pressure metal pipe may be used.

  On the upstream side of the bubble generation mechanism 18, a second air conveyance line 12 </ b> B and a second cleaning liquid conveyance line 24 </ b> B are connected. Then, the compressed air from the second air conveyance line 12B and the cleaning liquid from the second cleaning liquid conveyance line 24B are merged and mixed, and the mixed fluid is the reduced diameter part 18F and the enlarged diameter part 18G. By passing through, bubbles are generated. The pipe 18A is provided with a bubble valve 18I on the downstream side of the enlarged diameter portion 18G, and the flow rate of the bubbles flowing through the pipe 18A can be adjusted.

  The foam generation mechanism 19 is also the same mechanism as the foam generation mechanism 18 and mainly includes a stainless steel pipe 19A, an air valve 19B, a check valve 19C, a liquid valve 19D, a check valve 19E, cheese H, The third air conveyance line 12C and the third cleaning liquid conveyance line 24C are connected to the upstream side of the bubble generation mechanism 19, respectively. Then, the compressed air from the third air conveyance line 12C and the cleaning liquid from the third cleaning liquid conveyance line 24C merge and mix, and the mixed fluid expands with the reduced diameter portion 19F of the bubble generation mechanism 19. A bubble is produced | generated by passing through the diameter part 19G. In addition, the bubble valve 19I is also provided on the downstream side of the enlarged diameter portion 19G in the pipe 19A, and the flow rate of the bubbles flowing through the pipe 19A can be adjusted.

  The foam generation mechanism 20 mainly includes a stainless pipe 20A and a cheese 20B that joins the foams generated by the foam generation mechanisms 18 and 19. The pipe 20A is configured by combining a plurality of pipes having different inner diameters, so that a reduced diameter portion 20C and an enlarged diameter portion 20D are formed in the bubble generating mechanism 20. The pipe 20A is not limited to a stainless steel pipe, and a high pressure metal pipe may be used.

  The foam generation mechanism 20 is disposed on the downstream side of the foam generation mechanisms 18, 19, and the pipes 18 </ b> A, 19 </ b> A, 20 </ b> A are connected via the cheese 20 </ b> B, and before the foam generation mechanism 20, the foam generation mechanism 18. , 19 are joined together and flow into the foam production mechanism 20. And in the foam production | generation mechanism 20, the foam collided in the cheese 20B passes through the reduced diameter part 20C and the enlarged diameter part 20D, and is further foamed, and it is extremely fine and stable. Bubbles are generated.

  The bubble transport pipeline 21 is composed of, for example, a high pressure rubber hose or a high pressure vinyl hose, one end side of the foam transport pipeline 21 is connected to the pipe 20A of the foam generation mechanism 20, and the other end side of the foam transport pipeline 21 is a foam discharge device. 26. The bubble conveyance pipeline 21 is accommodated in the state wound around the hose reel 28, and has a length of 30 m / piece, for example. And according to the height etc. of the said washing | cleaning target object, the bubble conveyance pipe line 21 adjusts the full length by connecting two or more via a coupling (not shown).

  For example, the cleaning liquid storage tank 22 has a capacity capable of storing 200 L of cleaning liquid, and is a stainless steel tank or a tank made of an alkali-resistant material. In the cleaning liquid storage tank 22, for example, a stainless small diving heater 22 </ b> A is provided, and the cleaning liquid stored in the cleaning liquid storage tank 22 can be heated to about 70 to 80 ° C. The interior of the cleaning liquid storage tank 22 is divided into two regions by a partition plate (not shown), even when the cleaning liquid is stored in one of the sections and water is stored in the other section. good.

  In this case, for example, the cleaning liquid transport pipeline 24 is connected to the discharge port on the water side of the cleaning liquid storage tank 22 and the air valves 18B and 19B are closed, so that the foam cleaning apparatus 10 is used as a high pressure cleaning apparatus. Can be used. Furthermore, each foam production | generation mechanism 18, 19, 20 grade | etc., Can be water-washed with the said water, and it prevents that each piping 18A, 19A, 20A, foam conveyance pipeline 21 grade | etc., Deteriorates with a chemical | medical agent.

  Similar to the cleaning liquid storage tank 22, the cleaning liquid heating tank 23 is a stainless steel tank or a tank made of an alkali-resistant material, and has a capacity capable of storing, for example, 20 L of cleaning liquid. The cleaning liquid heating tank 23 has a built-in flange heater in the tank, and can heat the cleaning liquid stored in the cleaning liquid heating tank 23 to about 70 to 80 ° C. The cleaning liquid heating tank 23 is disposed in the vicinity of the cleaning liquid storage tank 22. The cleaning liquid heating tank 23 is not an essential component, and may be omitted if the cleaning liquid stored in the cleaning liquid storage tank 22 can be sufficiently heated via the stainless small submersible heater 22A. On the other hand, when the cleaning liquid cannot be sufficiently heated only by the stainless small submersible heater 22A as in winter work, the cleaning liquid heating tank 23 may be supplementarily used. Conversely, at sites where the amount of cleaning liquid used is small, the power consumption can be reduced by stopping the stainless steel small diving heater 22A and heating the cleaning liquid in the cleaning liquid heating tank 23.

  The cleaning liquid conveyance pipe 24 is composed of, for example, a high-pressure rubber hose or a high-pressure vinyl hose, and in this embodiment, the first cleaning liquid conveyance pipe 24A, the second cleaning liquid conveyance pipe 24B, and the third cleaning liquid conveyance pipe 24C. have. In addition, although the case where the washing | cleaning liquid conveyance pipe line 24 is comprised from the said high voltage | pressure rubber hose etc. is demonstrated, it is not limited to this case. For example, a high pressure metal pipe such as a stainless steel pipe may be used as the cleaning liquid transport pipe 24. In addition, a heat insulating material is wound around the cleaning liquid transport pipe 24, or a heat retaining material is used as the cleaning liquid transport pipe 24, thereby preventing temperature drop of the cleaning liquid flowing in the cleaning liquid transport pipe 24 as much as possible. can do.

  One end side of the first cleaning liquid conveyance pipe line 24 </ b> A is connected to the cleaning liquid storage tank 22, thereby sending the cleaning liquid in the cleaning liquid storage tank 22 to the downstream side. The other end side of the first cleaning liquid conveyance conduit 24A is connected to a cheese 29 which is a pipe joint, and the cleaning liquid piping path is branched from one system to two systems. And one end side of the 2nd washing liquid conveyance pipe line 24B and the 3rd washing liquid conveyance pipe line 24C is connected with the above-mentioned cheese 29, and other than the 2nd washing liquid conveyance pipe line 24B and the 3rd washing liquid conveyance pipe line 24C The end sides are connected to the foam generation mechanisms 18 and 19, respectively.

  The electric pump 25 is, for example, a self-contained type, its maximum pressure is 3.5 Mpa, and its water supply amount is 2.9 to 3.5 L / min. The electric pump 25 is disposed in the first cleaning liquid transport pipe 24A on the downstream side of the cleaning liquid heating tank 23, and pumps the cleaning liquid in the cleaning liquid storage tank 22 through the first cleaning liquid transport pipe 24A. The electric pump 25 is mainly intended to pump the cleaning liquid to the foam generation mechanisms 18 and 19, and the generated foam is pumped to the foam discharge device 26 together with the pressure by the air compressor 11. That is, the cleaning liquid is not structured to be pumped to the foam discharge device 26 by the pressure of the electric pump 25, and the electric pump 25 can be downsized and its noise can be greatly reduced.

  The pressure regulator 14 is disposed in the first cleaning liquid conveyance conduit 24A on the downstream side of the electric pump 25, and, as described above, reduces the pressure of the cleaning liquid pumped through the electric pump 25 to a desired pressure. . For example, the pressure regulator 14 reduces the pressure from 3.5 MPa, which is the primary side pressure, to 0.8 MPa, which is the secondary side pressure. The cleaning liquid is adjusted to a desired pressure via the pressure regulator 14 while observing the state of the bubbles generated by the bubble generation mechanism 20.

  The flow rate adjusting valve 16 is disposed in the first cleaning liquid transport pipe 24A on the downstream side of the pressure regulator 14, and the flow rate of the cleaning liquid flowing in the first cleaning liquid transport pipe 24A is adjusted. As with the pressure regulator 14, the flow rate of the cleaning liquid is adjusted to a desired flow rate via the flow rate adjustment valve 16 while observing the state of the bubbles generated by the bubble generation mechanism 20.

  The foam discharge device 26 is disposed at the tip of the foam transport pipeline 21 and has, for example, an opening / closing lever 26A that adjusts the amount of foam released from the foam transport pipeline 21 and a nozzle 26B that discharges the foam. ing. The operator extends the foam conveyance pipe line 21, carries the foam discharge device 26 to the construction site, sets the nozzle 26B on the object to be cleaned, and then operates the opening / closing lever 26A to move the inside of the object to be cleaned. Pour bubbles. And when moving the construction site, such as when cleaning the piping in each room of an apartment, etc., by operating the opening / closing lever 26A and closing the foam release device 26, the bubbles are placed around the construction site. Scattering is prevented.

  In the foam cleaning apparatus 10, a portion inserted by a one-dot chain line 30 is disposed, for example, in a cleaning vehicle (not shown). As described above, at the time of work, the foam transport pipe 21 is extended, the foam discharge device 26 is carried to the construction site, and the cleaning work is performed. In this embodiment, compressed air is generated using the air compressor 11, and the size of the air compressor 11 is, for example, width 348 mm × depth 497 mm × height 337 mm, and its weight is 12 kg. is there.

  That is, in the bubble cleaning apparatus 10, compared with the conventional gas cylinder type bubble cleaning apparatus, one air compressor 11 can be used and compressed air can be continuously supplied. Further, there is no need to increase the number of gas cylinders according to the working time and the like, and the size and weight of the compressed air supply means can be greatly reduced, and the size of the washing car can be reduced. As a result, the cleaning vehicle equipped with the foam cleaning device 10 can be applied to a construction site in a narrow alley in Tokyo. Moreover, in the foam cleaning apparatus 10, by using the air compressor 11, the heavy work of dropping the used gas cylinder from the cleaning vehicle and loading the filled gas cylinder is eliminated, and the working efficiency is greatly improved.

  Moreover, in the foam cleaning apparatus 10, since the air compressor 11 is an electric type and can continuously supply compressed air as long as the battery of the cleaning vehicle continues, pipe cleaning in a collective housing complex, etc. It can also be applied to construction sites that require long hours of work. In addition, a battery or a generator dedicated to the foam cleaning device 10 may be mounted in the cleaning vehicle to cope with a long-time cleaning operation. Further, the cleaning operation may be performed using an external power source such as a building to be cleaned.

  FIG. 2 is a diagram illustrating the configuration of the foam generation mechanisms 18, 19, and 20 of the foam cleaning apparatus 10 of the present embodiment. In addition, although FIG. 2 demonstrates the case where it comprises combining the piping 18A, 19A, 20A made from stainless steel, and another member, this structure is an example and is not limited to this structure.

  FIG. 2 shows an example of the foam generation mechanisms 18, 19, and 20 of the foam cleaning device 10. As shown in the figure, for example, the foam generation mechanism 18 is disposed on the left side of the paper surface, and the foam generation mechanism 19 is disposed on the right side of the paper surface. And a foam generating mechanism 20 is disposed on the upper side of the drawing. In the foam cleaning apparatus 10, the foam generation mechanism 18 and the foam generation mechanism 19 are arranged in parallel, and bubbles are generated in two systems. After the foams generated by the foam generation mechanisms 18 and 19 merge into one system via the cheese 20B, the merged foams have a reduced diameter part 20C (see FIG. 1) and an enlarged diameter part 20D (see FIG. 1). By passing through (see FIG. 1), finer bubbles are generated.

  As described above, the pipe 18A of the foam generation mechanism 18 is a combination of the plurality of pipes 18A1, 18A2, 18A4, 18A5 and the like having different inner diameters, so that the bubble generation mechanism 18 has a reduced diameter portion 18F and an enlarged diameter portion 18G. Is forming.

  For example, pipes 18A1 and 18A2 are connected to one end side of the liquid valve 18D, and a second cleaning liquid conveyance pipe line 24B is connected to the tip of the pipe 18A1. The inner diameter of the pipe line in the liquid valve 18D, the inner diameters of the pipes 18A1, 18A2 and the second cleaning liquid transport pipe line 24B are 6 mm. On the other hand, a pipe 18A3 is connected to the other end of the liquid valve 18D, and a check valve 18E is connected to the pipe 18A3. The inner diameter of the pipe 18A3 and the diameter when the check valve 18E is opened are 4 mm.

  The pipe 18A3 is connected to one end of the cheese 18H, and the inner diameter of the pipe line in the cheese 18H is 6 mm. A pipe 18A4 is connected to the other end of the cheese 18H, and the pipe 18A4 is connected to one end of the bubble valve 18I. The inner diameters of the pipes in the pipe 18A4 and the bubble valve 18I are 8 mm. And piping 18A5 connects with the other end side of bubble valve | bulb 18I, and the internal diameter of piping 18A5 is 10 mm. The piping structure on the air valve 18B side is the same as the above-described piping structure on the liquid valve 18D side. A piping 18A3 is connected to the other end of the air valve 18B, and a check valve 18C is connected to the piping 18A3. The inner diameter of the pipe 18A3 and the diameter when the check valve is opened are 4 mm.

  As described above, in the bubble generation mechanism 18, the pipe diameter is reduced from 6 mm to 4 mm on the downstream side of the air valve 18B and the liquid valve 18D, and the bubble generation mechanism 18 is formed by the check valves 18C and 18E and the pipe 18A3. The reduced diameter portion 18F is formed. On the other hand, in the foam generation mechanism 18, the tube diameter is increased from 4 mm to 6 mm in the cheese 18H, and at least the expanded diameter portion 18G is formed by the cheese 18H.

  That is, in the foam generating mechanism 18, the compressed air and the cleaning liquid are joined together while being violently collided in the cheese 18H that is the enlarged diameter portion in a state where the compressed air and the cleaning liquid are released from the compressed state. Are mixed well, and the compressed air of the mixed fluid increases at a stretch, so that bubbles are generated. As described above, the expanded diameter portion 18G of the foam generating mechanism 18 has at least the cheese 18H, but the diameter of the pipe 18A4, the foam valve 18I, and the diameter of the pipe 18A5 that gradually increase in diameter to 6 mm, 8 mm, and 10 mm are also expanded. It can also be used as 18G. Even in this case, the diameter of the pipe line gradually increases, so that the compressed air gradually increases and can be foamed toward the foam generation mechanism 20.

  As conditions for generating bubbles, for example, the pressure of the compressed air and the cleaning liquid is about 0.8 MPa, respectively, and the volume ratio of the cleaning liquid and the compressed air is adjusted to be 1: 10-20. Thus, bubbles in a stable state are generated. In addition, soft foam is generated by increasing the capacity of the cleaning liquid, while hard foam is generated by increasing the capacity of the compressed air. The state can be adjusted as appropriate.

  In the foam cleaning apparatus 10, stable foam supply is realized by generating foam by the two systems of the foam generation mechanisms 18 and 19 on the upstream side of the foam generation mechanism 20. The bubble generation mechanism 19 is the same mechanism as the bubble generation mechanism 18, and the description of the bubble generation mechanism 18 described above is referred to and detailed description thereof is omitted here. Also in the bubble generation mechanism 19, the reduced diameter portion 19F is reduced in diameter from 6 mm to 4 mm, and is formed by the check valves 19C and 19E and the pipe 19A3. On the other hand, the diameter-expanded portion 19G is expanded from 4 mm to 6 mm in tube diameter, and the diameter-expanded portion 19G is formed of at least cheese 19H. In addition, the pipe 19A4, the bubble valve 19I, and the pipe 19A5 that gradually increase in diameter to 6 mm, 8 mm, and 10 mm can also be used as the enlarged diameter portion 19G.

  In the foam production | generation mechanism 20, although each piping 18A, 19A, 20A connects via cheese 20B, the internal diameter of the pipe line in cheese 20B is 10 mm. And by the shape of cheese 20B, the foam which flows through the piping 18A and the foam which flows through the piping 19A collide head-on in the cheese 20B, and bubbles are stirred by the impact.

  For example, although a bubble is an aggregate of fine bubbles, the particle size of each bubble becomes small and it becomes difficult to rupture when it has a substantially spherical shape, and the state of bubbles can be maintained for a long time. And since the foam produced | generated in the foam production | generation mechanisms 18 and 19 is produced | generated as a foam from the fluid mixture of a washing | cleaning liquid and compressed air, the magnitude | size of each bubble is also disperse | distributed and the shape is also a substantially spherical shape. There are few, and it is hard to become a bubble of the stable state. Therefore, as described above, in the bubble generation mechanism 20, the size of each bubble is also refined by causing bubbles to collide with each other and stirring. Then, the agitated bubbles pass through the reduced diameter portion 20C and the enlarged diameter portion 20D of the bubble generation mechanism 20 again, so that an extremely fine bubble in a stable state that is difficult to be liquefied is generated.

  As illustrated, one end of the pipe 20A is connected to the cheese 20B, and the other end of the pipe 20A is connected to one end of the foam valve 20E. The inner diameter of the pipe 20A is 8.5 mm, which is reduced from the inner diameter of the cheese 20B, 10 mm. On the other hand, the inner diameter of the pipe line in the bubble valve 20E is 10 mm. Note that the other end side of the bubble valve 20E is connected to a pipe of the foam conveyance pipe line 21, and the inner diameter of the pipe is 10 mm. Further, as the enlarged diameter portion 20D, at least the bubble valve 20E may be provided, and the same diameter foam delivery pipe line 21 may be used as the enlarged diameter portion 20D.

  As described above, in the bubble generation mechanism 20, the reduced diameter portion 20C is formed by the pipe 20A, and the enlarged diameter portion 20D is formed by the pipe line in the bubble valve 20E. And the foam stirred in the cheese 20B is further compressed by the pipe 20A that is the reduced diameter part 20C, and the compressed air increases at a stretch in the pipe line of the foam valve 20E that is the enlarged diameter part 20D. In addition, extremely fine bubbles are generated.

  As described above, the foam cleaning device 10 according to the present embodiment has, for example, three foam generation mechanisms 18, 19, and 20, and the foam generation mechanisms 18, 19, and 20 have reduced diameter portions 18F and 19F, respectively. 20C and enlarged diameter portions 18G, 19G, and 20D are formed. Then, the compressed air and the cleaning liquid pass through the reduced diameter portions 18F, 19F, and 20C and the enlarged diameter portions 18G, 19G, and 20D to generate bubbles. With this structure, unlike the conventional foam cleaning apparatus, it is not necessary to dispose a mesh filter for foam generation in the pipe line of the foam cleaning apparatus 10, and clogging caused by the mesh filter is caused in the pipe line. A structure that does not occur is realized.

  Further, in the foam cleaning device 10, the foams generated by the two systems of the foam generation mechanisms 18 and 19 are merged to form one system of the foam generation mechanism 20, and then to the foam discharge device 26 via the foam transport pipeline 21. And pump. For example, in a cleaning operation of a high-rise building having a plurality of rooms, it is necessary to fill the foam in one room and finish the cleaning operation, then move to another room and restart the cleaning operation. As a result, since bubbles are not released during the movement of each room, a part of the bubbles in the bubble transport pipe 21 at the high place falls to the ground side in the foam transport pipe 21 and the foam is discharged. In some cases, it may accumulate at a low position in the transport pipeline 21.

  In this case, a part of the accumulated bubbles may be liquefied, and when the cleaning operation is resumed, the bubbles generated by the bubble generation mechanism 20 are combined with the bubbles in the bubble transport pipeline 21. The liquefied cleaning liquid must also be pushed up. In the foam cleaning device 10, sufficient pressure is obtained by merging from two systems to one system before the foam generation mechanism 20, and even when the liquefied cleaning liquid is present in the foam transport pipeline 21. The foam can be reliably pumped to the foam discharge device 26.

  That is, as described above, the foam generated in the ground washing vehicle is pumped to a high place such as a condominium via the foam transport pipe 21, but the mixed fluid of the compressed air and the cleaning liquid is used as the foam. Thus, for example, the volume of the cleaning liquid is expanded 10 to 20 times, while its weight is reduced to 1/10 to 1/20 times. In other words, the pressure of the cleaning liquid can be reduced significantly compared to the pressure when the cleaning liquid is pumped to a high place by pumping the cleaning liquid to a high place. And the foam in the foam conveyance pipe line 21 is pushed by the pressure of the two systems by the foam generation mechanisms 18 and 19, so that even when the liquefied cleaning liquid is present in the foam conveyance pipe line 21, it is ensured. Foam can be pumped to the foam release device 26.

  Further, in the foam cleaning device 10, with respect to the air transport pipe 12 and the cleaning liquid transport pipe 24, the second air pipe 12 </ b> A and the first cleaning liquid transport pipe 24 </ b> A are connected to the second system from the one system pipe. Branches into two lines, the air conveyance line 12B, the third air conveyance line 12C, the second cleaning liquid conveyance line 24B, and the third cleaning liquid conveyance line 24C. Although the case where it connects is demonstrated, it is not limited to this case. For example, it may be possible to branch from one system of the first air transport pipe 12A and the first cleaning liquid transport pipe 24A to three or more systems of the air transport pipe and the cleaning liquid transport pipe. Even in this case, the bubbles generated by the three or more bubble generation mechanisms arranged in parallel merge before the bubble generation mechanism 20, and the merged bubbles pass through the bubble generation mechanism 20 as described above. An effect similar to the effect can be obtained.

  Further, in the foam cleaning device 10, the compressed air generated by the air compressor 11 is supplied only to the air transport pipe 12, and the cleaning liquid in the cleaning liquid storage tank 22 is supplied to the cleaning liquid transport pipe 24 via the electric pump 25. Although the case where it is supplied has been described, the present invention is not limited to this case. For example, a new air conveyance pipe connects the air compressor 11 and the cleaning liquid storage tank 22, and the compressed air is sent into the cleaning liquid storage tank 22, and the cleaning liquid is supplied to the cleaning liquid conveyance line 24 by the pressure of the compressed air. It is also possible to supply. In this case, by using the electric pump 25 without using the electric pump 25 or using the electric pump 25 in combination, the compressed air in the air conveying line 12 and the cleaning liquid in the cleaning liquid conveying line 24 are used as described above. Can be mixed to produce foam. In addition, various modifications can be made without departing from the scope of the present invention.

  Next, with reference to FIG. 3, a foam cleaning apparatus according to another embodiment of the present invention will be described in detail based on the drawings. In the description of the present embodiment, the same reference numerals are used for the same members in principle, and repeated descriptions are omitted.

  FIG. 3 is a system diagram illustrating the configuration of the foam cleaning apparatus 50 of the present embodiment. The foam cleaning apparatus 50 has a structure in which the high-pressure cleaning machine 51 is mainly combined with the foam cleaning apparatus 10 described with reference to FIGS. 1 and 2. In the following description, the high-pressure cleaning machine 51 is combined. The cleaning function added and the structure thereof will be described. In principle, the same reference numerals are used for the same structure as the foam cleaning device 10 described above, and repeated description will be omitted.

  As shown in FIG. 3, the foam cleaning device 50 mainly includes an air compressor 11, an air conveyance pipe 12, pressure regulators 13 and 14, flow rate adjusting valves 15 and 16, an air warmer 17, Foam generation mechanisms 18, 19, 20, foam transport pipe 21, storage tank 52, cleaning liquid heating tank 23, cleaning liquid transport pipe 24, electric pump 25, foam discharge device 26, and high pressure washer 51 And water transport pipes 53, 54, 55, a high pressure water discharge device 57, an air transport pipe 63, a mixed fluid transport pipe 67, and a mixed fluid discharge device 68.

  The high-pressure washing machine 51 is, for example, a soundproof type and an engine-type high-pressure washing machine, and sends out about 7.0 MPa of high-pressure water, and the amount of water is about 30 L per minute. The high-pressure washing machine 51 is connected to the water storage area 52C of the storage tank 52 through the water transport pipelines 53 and 54. The water conveyance conduit 53 is a hose for sending the water in the water storage area 52 </ b> C of the storage tank 52 to the high pressure washer 51. Moreover, the water conveyance pipe line 54 is a hose for sending the excess water in the high-pressure washing machine 51 to the water storage area 52C.

  The storage tank 52 has a capacity of 220 L, for example, and is a stainless steel tank or a tank made of an alkali-resistant material. The storage tank 52 is divided into two regions by a partition plate 52A. One of the divided areas is used as a cleaning liquid storage area 52B and has a capacity of 150L. On the other hand, the other divided area is used as the water storage area 52C and has a capacity of 70L. The cleaning liquid storage area 52B corresponds to the cleaning liquid storage tank 22 of the foam cleaning apparatus 10 described with reference to FIGS. 1 and 2, and supplies the cleaning liquid to the foam generation mechanisms 18 and 19. Further, for example, a stainless small submersible heater 52D is disposed in the cleaning liquid storage area 52B of the storage tank 52, and the relationship between the storage tank 52 and the cleaning liquid heating tank 23 is the same as the cleaning liquid storage tank 22 and the cleaning liquid heating tank 23 described above. It is the same as the relationship.

  The water conveyance pipeline 55 is composed of, for example, a high-pressure rubber hose or a high-pressure vinyl hose. In the present embodiment, the first water conveyance pipeline 55A, the second water conveyance pipeline 55B, and the third water conveyance pipeline 55C. have.

  One end side of the first water conveyance pipe 55A is connected to the high-pressure washing machine 51, so that the water in the high-pressure washing machine 51 is sent to the downstream side. And the other end side of 55 A of 1st water conveyance pipelines is connected to the cheese 56 which is a piping joint, and the piping path of high pressure water is branched from 1 system to 2 systems.

  One end side of the second water conveyance pipeline 55B is coupled to the cheese 56, and the other end side of the second water conveyance pipeline 55B is coupled to the high-pressure water discharge device 57. The 2nd water conveyance pipe line 55B is accommodated in the state wound by the hose reel 58, for example, has a length of 30 m / piece. And according to the height etc. of the said washing | cleaning target object, the 2nd water conveyance pipe line 55B is adjusted with the multiple length through a joint (not shown), and the full length is adjusted.

  The high-pressure water discharge device 57 has, for example, an open / close lever 57A that adjusts the discharge amount of high-pressure water from the second water conveyance pipe 55B, and a nozzle 57B that discharges high-pressure water. The operator extends the second water conveyance pipe 55B, carries the high-pressure water discharge device 57 to the construction site, sets the nozzle 57B with respect to the object to be cleaned, operates the opening / closing lever 57A, and operates the object to be cleaned. High pressure water is discharged into the interior of

  One end side of the third water conveyance pipeline 55C is coupled to the cheese 56, and the other end side of the third water conveyance pipeline 55C is coupled to the cheese 60 that is a pipe joint. A pressure regulator 61 and a check valve 62 are disposed in the third water conveyance pipe 55C, and the high-pressure water is adjusted to a desired pressure before joining with compressed air in the cheese 60. For example, the pressure regulator 61 reduces the pressure from 7.0 MPa, which is the primary side pressure, to 3.0 MPa, which is the secondary side pressure.

  The air conveyance pipe 63 is composed of, for example, a high pressure rubber hose or a high pressure vinyl hose. However, the air conveyance pipe 63 is not limited to this case, and the air conveyance pipe 63 is, for example, a high pressure resistant metal such as a stainless steel pipe. A pipe made of metal may be used.

  One end side of the air conveyance pipe line 63 is connected to the cheese 64 which is a pipe joint, and the other end side of the air conveyance pipe line 63 is connected to the cheese 60. The cheese 64 is disposed in the first air conveyance line 12A in the vicinity of the air compressor 11, and the air conveyance line 63 allows the compressed air sent from the air compressor 11 to flow downstream. Note that an air valve 59 is provided in the air conveyance pipe line 63, and compressed air can be appropriately sent to the cheese 60 side.

  An electromagnetic valve 65 and a check valve 66 are provided in the air conveyance pipe 63, and the opening and closing of the electromagnetic valve 65 can be adjusted in accordance with the timing desired by the operator in accordance with the electric signal of the double timer. . For example, the compressed air can be stopped for 2 seconds after flowing the compressed air through the air conveyance pipe 63 for 1 second. One end side of the mixed fluid transport pipe 67 is connected to the downstream side of the cheese 60, and the other end side of the mixed fluid transport pipe 67 is connected to the mixed fluid discharge device 68.

  The mixed fluid transport pipe 67 is composed of, for example, a high-pressure rubber hose or a high-pressure vinyl hose, and is housed in a state of being wound around a hose reel 69, and has a length of 30 m / piece, for example. And according to the height etc. of the said washing | cleaning target object, the mixed fluid conveyance pipe line 67 adjusts the full length by connecting two or more through a coupling (not shown).

  The mixed fluid discharge device 68 includes, for example, an open / close lever 68A that adjusts the discharge amount of the mixed fluid of the high-pressure water and the compressed fluid from the mixed fluid transport pipe 67, and a nozzle 68B that discharges the mixed fluid. ing. The operator extends the mixed fluid transport pipe 67, carries the mixed fluid discharge device 68 to the construction site, sets the nozzle 68B with respect to the object to be cleaned, and then operates the open / close lever 68A to move the inside of the object to be cleaned. Release the mixed fluid into

  As described above, in the foam cleaning device 10, the foam can be poured into the object to be cleaned, and the inside of the piping and the like that are difficult to clean with the high pressure cleaning device can be chemically cleaned. On the other hand, in the foam cleaning device 10, the foam released has no momentum, and unlike the high pressure cleaning device, it is not possible to clean the soil using physical external force due to foaming.

  Therefore, the foam cleaning device 50 of the present embodiment can have the property of physically cleaning by foaming by adding the high-pressure cleaning machine 51 in addition to the property of chemically cleaning by the foam cleaning device 10. As a result, the vicinity of the entrance of the object to be cleaned is physically cleaned using the high-pressure water discharge device 57 and the mixed fluid discharge device 68, and the inside of the object to be cleaned is chemically cleaned using the bubble discharge device 26. It can be performed.

DESCRIPTION OF SYMBOLS 10 Foam cleaning apparatus 11 Air compressor 12 Air conveyance line 13, 14 Pressure regulator 15, 16 Flow rate adjustment valve 17 Air warmer 18, 19, 20 Foam production | generation mechanism 21 Foam conveyance line 22 Cleaning liquid storage tank 23 Cleaning liquid heating tank 24 Washing liquid conveyance line 25 Electric pump 26 Foam discharge device 50 Foam washing device 51 High pressure washing machine 52 Storage tank 53, 54, 55 Water conveyance line 57 High pressure water discharge device 63 Air conveyance line 67 Mixed fluid conveyance line 68 Mixing Fluid discharge device

Claims (6)

An air compressor for supplying compressed air;
An air conveyance conduit for conveying the compressed air;
A storage tank for storing the cleaning liquid;
An electric pump that sucks and pumps the cleaning liquid from the storage tank;
A cleaning liquid transport line for transporting the cleaning liquid;
A foam generating mechanism that is connected to the air transport pipe and the cleaning liquid transport pipe and generates foam from a mixed fluid in which the compressed air and the cleaning liquid are mixed.
A foam transport line for transporting the foam;
A foam discharge device connected to the foam transport line,
The foam generation mechanism has a plurality of parallel foam generation mechanisms that are arranged in parallel, and one merged foam generation mechanism that is arranged on the downstream side of the parallel foam generation mechanism,
The air cleaning conduit and the cleaning liquid transport conduit are branched into a plurality of conduits, respectively, and then connected to the plurality of parallel foam generating mechanisms. The foam generation mechanism has a reduced diameter part and an enlarged diameter part connected to the reduced diameter part,
The parallel foam generation mechanism generates a first foam from the mixed fluid,
In the merging foam generation mechanism, the foam is generated from the first foam generated in the parallel foam generation mechanism,
The foam cleaning apparatus according to claim 1, wherein the foam is a foam having a particle size smaller than that of the first foam. The reduced diameter portion and the enlarged diameter portion are formed using a pipe and a joint connected to the pipe,
The reduced diameter portion is provided in the pipe connected on the upstream side with respect to the joint that joins the branched air transport pipe and the branched cleaning liquid transport pipe,
The foam cleaning apparatus according to claim 2, wherein the enlarged diameter portion is a joint to be joined.   The foam cleaning apparatus according to claim 2 or 3, wherein a foam generating filter is not disposed in the foam generating mechanism and the foam transport pipeline. An air warmer that heats the compressed air downstream from the air compressor is disposed in the air conveyance pipeline,
5. The cleaning liquid heating tank that heats the cleaning liquid is disposed between the storage tank and the electric pump in the cleaning liquid conveyance pipe line. 6. The foam cleaning apparatus described in 1. The storage tank is divided into a cleaning liquid storage area for storing the cleaning liquid and a water storage area for storing water,
The cleaning liquid storage area is connected to the cleaning liquid transport conduit, and the water storage area is connected to a water transport conduit for transporting the water,
A high-pressure washing machine that sucks and pumps the water from the water storage area is disposed in the water conveyance pipeline, and the water conveyance pipeline includes a first water conveyance pipeline and a second water conveyance pipeline. Branch to the pipeline,
The first water transport pipe is connected to a high pressure water discharge device that discharges high pressure water pumped by the high pressure washer,
The second water conveyance pipe is connected to a mixed fluid discharge device that discharges a mixed fluid of the high pressure water pumped by the high pressure washer and the compressed air supplied by the air compressor. The foam cleaning apparatus according to any one of claims 1 to 5.

Images