JP2016061064A - Cleaning method for drain pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cleaning method for a drain pipe that spreads a small amount of chemical readily and uniformly over an entire inner peripheral surface of a drain pipe of a toilet bowl, thereby effectively removing urinary calculus.SOLUTION: A cleaning method is for a drain pipe 20 that drains sewage from a toilet bowl 10 installed on each floor by leading the sewage to a horizontal pipe 21, and from the horizontal pipe 21 to a vertical main pipe 23. The cleaning method comprises: a urinary calculus softening step in which a chemical spraying nozzle of chemical injection means is inserted from a cleaning port 27 provided in the vertical main pipe 23, for spraying a urinary calculus softening agent from each of injection ports onto urinary calculus adhered on an inner wall surface of the vertical main pipe 23, thereby softening the urinary calculus; a neutralization step in which a neutralizing agent is injected into the vertical main pipe 23 for neutralizing the urinary calculus softening agent; and a high-pressure water cleaning step in which a high-pressure water injection nozzle of high-pressure water supply means is inserted from the cleaning port 27 provided in the vertical main pipe 23 for spraying high-pressure water and cleaning the inner wall surface of the vertical main pipe 23, thus removing the softened urinary calculus. The horizontal pipe 21 is cleaned in the same way.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a drainage pipe cleaning method capable of easily and effectively removing urine stones fixed in a drainage pipe of a toilet.

  Conventionally, sewage drainage pipes from toilets, unlike drainage pipe systems such as kitchens, have no oil and fat deposits in the drainage pipes, and the amount of drainage per Western / Japanese style toilet (large) is 13L or more. Therefore, the necessity for maintenance such as regular high-pressure water washing (cleaning of pipes) was thought to be low.

  In recent years, however, the amount of urine that adheres to drainage pipes has increased with the increase in the size and height of complex facility properties (collective housing, offices, restaurants, etc.), and its maintenance (removal of urinary stones, etc.) ) Has become more necessary.

  That is, the increase in the scale of the complex facility property increases the number of people and the number of toilets used per toilet bowl, which increases the amount of urine and other deposits. In addition, with the rise in height, the draft phenomenon in the drainage pipe (especially in the main pipe) (the phenomenon in which the airflow flows through the pipe due to the pressure difference between the upper and lower sides of the pipe) increases, and the speed of the airflow flowing in the drainage pipe increases. It becomes easy to dry, and the calcium ions in the attached sewage are easily fixed as urine stone (calcium compound). In addition, for the purpose of environmental measures and cost reduction, the use of high-impurity water (miscellaneous water supply) makes calcium ions in sewage water easily turn into urine. Furthermore, due to technological innovation, the amount of washing water in a toilet bowl is reduced to a small amount (in the past, the amount of washing water required for each wash was 13L or more, but in recent years it has been reduced to 6L or less for Western-style toilets (large)). Therefore, the calcium concentration in the sewage is increased and the urine stone is easily formed in the drain pipe.

  On the other hand, conventionally, as a method for removing urinary stones in a drain pipe, for example, in Patent Document 1, an acidic drug is poured from a toilet or the like, and a horizontal pipe (drain pipe) connected to the toilet bowl and a vertical main pipe connected to the horizontal pipe are used. By softening the urine stone fixed to the (drainage pipe), after a predetermined time has elapsed, the alkaline drug is similarly poured from a toilet or the like to neutralize the acidic drug, and further, after a predetermined time has elapsed, by washing with high pressure water, A cleaning method for stripping and removing the softened urine stone is disclosed.

JP 2000-345600 A JP 2007-315114 A

However, the cleaning method disclosed in Patent Document 1 has the following problems.
(1) About urine stone adhering to the horizontal tube The main adhering place of the urine stone in the horizontal tube connected to the toilet is the left and right side portions of the inner wall of the tube. This is because urine stones do not adhere to the bottom of the tube because sewage flows and is always wet, and urine stones do not adhere to the top surface of the tube. This is because the portion easily adheres to the sewage and at the same time is easy to dry. When an acidic drug or an alkaline drug is poured from a toilet or the like using the above-described cleaning method, many of them flow on the bottom of the tube in the horizontal tube. For this reason, there is a problem that the drug is difficult to adhere to both the left and right side surfaces (further, the upper surface of the tube) of the tube to which the drug is most desired to adhere, and thus a sufficient urine stone removal effect cannot be obtained.

  In order to solve the above problem, for example, in Patent Document 2, a balloon is inserted into a predetermined position on the downstream side in the horizontal tube, and the balloon is inflated to close the inside of the horizontal tube, and then the drug is placed in the horizontal tube reaching the balloon. Is disclosed, thereby softening the urine stone. According to this method, since the medicine can be attached to the entire surface of the horizontal tube, a suitable urine stone removal effect can be obtained. However, in this method, since the medicine must be filled in the horizontal tube, not only a large amount of medicine is consumed, resulting in an increase in cost, but also the processing burden in the public sewer and the treatment tank in the building after these are discharged. It will increase.

(2) About urinary stones adhering to the main tube In the main tube, urinary stones adhere substantially uniformly to the entire inner wall surface of the tube. As described above, when an acidic or alkaline drug poured from a toilet or the like flows into a vertical main pipe from a horizontal tube, the inner surface of urine adhering to the tube generally has a path through which water flows (a shallow concave portion). In many cases, a water channel) is formed, and the drug flows along the water channel. For this reason, the drug cannot be attached to the entire urine stone adhering to the entire inner periphery of the main pipe, resulting in uneven softening of the urolith, and there was a problem that a sufficient urine stone removal effect could not be obtained. . When softening unevenness occurs, there are places that can be removed and places that cannot be removed during high-pressure water washing.

  In order to solve the above problem, for example, a method of flowing a large amount of medicine into the main pipe at a time can be considered. If a large amount of the drug is flowed, the drug flows in a spiral shape along the tube wall in the main pipe, and the drug can be attached to the entire urine stone attached to the entire inner periphery of the main pipe. However, even in the case of this method, a large amount of chemicals is required, resulting in an increase in cost, and the processing load in public sewers and in-building treatment tanks after these are discharged increases.

  By the way, scaled (hardened) urinary stone is fixed to a difficult level even if it is removed from the tube wall with a screwdriver etc., and even if it can be peeled off, it will become a large lump and block the drain pipe, etc. Uneven softening with chemicals and fine crushing with high-pressure water are necessary.

  The present invention has been made in view of the above-mentioned points, and the object thereof is to easily and uniformly adhere a medicine to the entire inner peripheral surface of a toilet drainage pipe with a small amount of medicine, and effectively urine. It is providing the drain pipe washing | cleaning method which can remove a stone.

The present invention is a drainage pipe cleaning method for guiding drainage from a toilet installed on each floor to a horizontal pipe, and further guiding the drainage from the horizontal pipe to a vertical main pipe and draining the drainage pipe. A medicine spraying nozzle is connected to the other end side of the medicine spraying nozzle, and the medicine spraying nozzle is provided with a plurality of ejection holes in the circumferential direction, and a high pressure is applied to one end of the high pressure washing hose. A water injection nozzle, and a high-pressure water supply means comprising a high-pressure water supply pump connected to the other end, and each of the chemical spray nozzles is inserted through a cleaning port provided in the main pipe The urine stone softening step of softening the urine stone by adhering the urolith softener to the urine stone fixed to the inner wall surface of the main pipe by spraying the urine stone softening agent from the ejection hole, and the urolith softening step Next, a neutralization step of neutralizing the urolith softener by introducing a neutralizer into the vertical main pipe, Next to the neutralization step, the softened urinary stone is removed by inserting the high-pressure water injection nozzle from the cleaning port provided in the main pipe and injecting high-pressure water to wash the inner wall surface of the main pipe. And a high-pressure water washing step for peeling off.
In the present invention, the urinary stone softening is performed from each of the spray holes provided in the circumferential direction of the drug spray nozzle by inserting the drug spray nozzle attached to one end of the drug spray hose from the cleaning port provided in the main pipe. Since the agent is sprayed, the urolith softener can be easily and reliably attached to the entire inner wall surface of the main pipe. As a result, it is possible to soften the entire urine stone adhering to the entire inner wall surface of the main pipe, and the entire urine stone is peeled off as a fine lump by a subsequent high-pressure water washing step and easily discharged to the outside. It becomes possible to do. In addition, since the amount of urine softener applied can be kept to a minimum, not only can the cost be reduced, but also the processing load in the public sewers and in-building treatment tanks after discharging these can be reduced. it can.
Further, the medicine injection means is composed of a medicine spraying hose, a medicine spraying nozzle, and a medicine supply pump, and its structure is simple, so that the cost can be reduced also from this point.

In the urolith softening step, the urine stone softening step moves down the floor while spraying the urolith softener from each ejection hole of the drug spray nozzle inserted from the cleaning port provided in the main pipe. The urine stone softening agent is attached to the urine stone fixed to the inner wall surface of the main pipe to soften the urine stone. On the other hand, in the high-pressure water washing step, the urine stone is inserted from the cleaning port provided in the main pipe The softening is achieved by lowering the high-pressure water injection nozzle to a predetermined position, injecting high-pressure water from the high-pressure water injection nozzle at that position, and cleaning the inner wall surface of the vertical main pipe while pulling up the vertical main pipe as it is It is characterized by peeling urine stones.
In the present invention, the urine stone softener is sprayed while moving the medicine spraying nozzle inserted into the main pipe from the upper part of the pipe toward the lower part of the pipe, while the high-pressure water injection nozzle inserted into the main pipe is moved from the lower position. The inner wall surface of the main pipe is washed while being pulled up, thereby enabling more effective and smooth softening and removal of urine stone.
That is, the urinary softener sprayed on the upper part of the tube first adheres to the entire inner wall surface of the upper part of the tube, and at the same time, the excess urinary softener hangs downward. In other words, if the urine stone softener is sprayed while moving the drug spray nozzle from the upper part of the tube toward the lower part of the tube, it will drip from the top prior to the adhesion of the urine stone softener by the spray nozzle. After the urine stone softening agent adheres and moisturizes the surface of the urine stone, the urine stone softening agent sprayed from the nozzle for spraying the drug is struck against the surface of the urine stone. Urine stone softener can be further adhered to the deep part of the surface (inside the fine irregularities).
On the other hand, the softened part of the urine stone is peeled off as a fine lump by the impact of the high pressure water in the high pressure water washing process, but in the present invention, the injection of the high pressure water is directed upward from the lowered position of the main pipe. Since it is performed toward the bottom, it will be peeled off from the downstream urine stones as fine lumps. On the other hand, if the softened urinary stone is peeled off with high-pressure water from the top to the bottom, the softening is not applied yet but the impact is not applied. There is a risk that the urine on the side will be peeled off as a large lump by vibration or the like. Urine stones that have been peeled off by large lumps may block the main pipe. According to the present invention, such a problem is unlikely to occur, thereby enabling more effective and smooth softening and removal of urine stone as described above.
Furthermore, according to the present invention, the urine stone softening agent is sprayed while the medicine spraying nozzle inserted into the main pipe is moved from the upper part of the pipe toward the lower part of the pipe, and therefore, it adheres below the main pipe. The amount of urine stone softening agent dripping increases with urine stone, and therefore more urine stone softening agent adheres, and urine stone can be softened thicker. On the other hand, the thickness of the urinary stone is generally thicker as it goes down, but according to the present invention, the thicker the portion, the larger the amount of urinary stone softening agent can be attached. In the later high-pressure water washing step, the thicker the lower urine stone can be removed more thickly.

Further, in the present invention, the drug supply pump is a metering pump, and the spraying flow rate when moving toward the downstairs direction while spraying the urine softener from the drug spraying nozzle is always kept constant. It is characterized by.
When a normal pump is used as the drug supply pump, the more the drug spray nozzle inserted in the main pipe moves downward, the liquid column in the drug spray hose in addition to the discharge pressure by the drug supply pump. The pressure due to the pressure is applied to the nozzle for spraying the medicine, the flow rate of the sprayed urolith softener is increased, and it is discharged unnecessarily. Therefore, in the present invention, a metering pump (constant flow pump) is used as a drug supply pump, and the spraying flow rate of the urine softener to be sprayed is always kept constant regardless of the position of the nozzle for spraying the drug in the main pipe. In this way, it is possible to prevent the urine stone softener from being sprayed wastefully.
This invention uses the drug spraying nozzle together with the above-mentioned invention in which the urine stone softener is sprayed while moving from the upper part of the tube toward the lower part of the tube, thereby reducing (less wasteful) the urine stone softener. Thus, urine stone can be softened and removed more effectively.

In the urine stone softening step, the drug spray nozzle is further inserted from the end side of each horizontal tube and the urine softener is sprayed from each ejection hole, thereby The urine stone softening agent is attached to the urine stone fixed to the wall surface to soften the urine stone. On the other hand, in the high pressure water washing step, the high pressure water is further introduced from the end side of each horizontal tube after the urine stone softening agent is added. The soft urine stone is peeled off by inserting a water jet nozzle and washing the inner wall surface of the horizontal tube.
Since the spraying nozzle attached to one end of the spraying hose is inserted from the end side of the horizontal tube and the urine softener is sprayed from each of the spray holes provided in the circumferential direction of the spraying nozzle. The urolith softener can be easily and reliably attached to the entire inner wall surface of the tube (particularly both the left and right side surfaces and the upper surface). This makes it possible to soften the entire urine stone adhering to the entire inner wall surface of the horizontal tube, and the subsequent high-pressure water washing process separates the entire urine stone as a fine mass and easily discharges it in the downstream direction. It becomes possible to do. In addition, since the amount of urine softener applied can be kept to a minimum, not only can costs be reduced, but the processing burden in public sewers and treatment tanks in buildings after the discharge of these can be reduced. it can.
That is, the effect of the present invention can be further exerted by spraying the urine stone softener on the inner wall surface of the tube using the drug spray nozzle not only for the above-mentioned main tube but also for the horizontal tube.

Further, in the neutralization step, the neutralization step is performed on the inner wall surface of the main pipe by inserting the medicine spray nozzle from the cleaning port provided in the main pipe and spraying the neutralizing agent from each ejection hole. It is characterized by neutralizing the urolith softener adhered to the fixed urolith.
If the neutralizing agent is sprayed into the main pipe, the urine stone softening agent adhered to the entire surface of the urine fixed to the inner wall surface of the main pipe is neutralized on the entire surface. Can be made. Because urine softener is strongly acidic, touching the urine softener when the high-pressure water jet nozzle is inserted into the main pipe in the high-pressure water washing step after the neutralization step may cause rust. Such a problem can be prevented by completely neutralizing the urolith softener using the invention.

  According to the drainage pipe cleaning method according to the present invention, a drug can be easily and uniformly attached to the entire inner peripheral surface of the toilet drainage pipe with a small amount of medicine, and urine stones can be effectively removed. it can.

It is the schematic which shows one installation example of the drain pipe 20 connected to the urinal 10 installed in each floor of a high-rise building. 3 is a schematic view showing an example of a medicine injection means 30. FIG. 3 is an enlarged side view of a nozzle 33. FIG. 3 is a schematic view showing an example of high-pressure water supply means 50. FIG. FIG. 4 is a cleaning method process diagram for cleaning urine stones attached to the inner wall of the drain pipe 20. It is a figure which shows the dispersion | spreading state of the urine stone softening agent in the vertical pipe. It is a figure which shows the application | coating state of the urolith softener in the horizontal tube.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic view showing an installation example of a drain pipe 20 connected to a urinal 10 installed on each floor of a high-rise building. As shown in the figure, the urinal 10 is installed in a male toilet on each floor. In FIG. 1, the urinals 10 on the 19th floor, the 18th floor, and the 11th floor are shown. Each urinal 10 on each floor is connected to a horizontal pipe (horizontal branch pipe or horizontal main pipe) 21, and the horizontal pipe 21 on each floor is connected to a main pipe 23. A cleaning port 25 is provided at the end of the horizontal tube 21 (the end on the side away from the main tube 23). Further, the main pipe 23 is provided with a cleaning port 27 for each predetermined floor (in this example, the 19th floor and the 11th floor). The cleaning port 27 is provided in the vicinity of a portion where the horizontal pipe 21 of the floor is connected. In this example, it is bent at the lower part (for example, the first floor) of the main pipe 23, and a camera insertion port 29 is provided in the vicinity of the bent part a1. The cleaning ports 25 and 27 and the camera insertion port 29 are normally closed by a lid. The urine discharged to the urinal 10 is collected in the horizontal pipe 21 of each floor, then collected in the main pipe 23, and transferred downward in the main pipe 23. The drain pipe 20 (the horizontal pipe 21 and the main pipe 23 as a whole) shown in this example is a drain pipe dedicated to a urinal for men, and the drain pipe 20 is a Western / Japanese style toilet for men / women. It is connected to the drainage pipe of another connected system on the downstream side and collected in a sewage tank installed in the basement of the building (or connected to a public sewage pipe outside the building). In addition, the drainage system from the Western / Japanese style urinals for men and women in addition to the urinals 10 may be joined to the horizontal pipe 21 without separating the drainage systems of the large urinals. Further, the horizontal pipe 21 may be combined with drainage from a hand-washing / washing surface installed in the toilet.

  FIG. 2 is a schematic view showing an example of the drug injection means 30 used in the present invention. As shown in the figure, the drug injection means 30 has a drug spray nozzle (hereinafter simply referred to as “nozzle”) 33 attached to one end of a drug spray hose (hereinafter simply referred to as “hose”) 31 and a drug spray at the other end. A supply metering pump (hereinafter simply referred to as “metering pump”) 35 is connected. The metering pump 35 is driven by a motor 37 and pumps a medicine (such as a urolith softener and a neutralizing agent) stored in the tank 39 to the nozzle 33 through the hose 31. The flow rate of the chemical liquid pumped by the metering pump 35 is always constant.

  FIG. 3 is an enlarged side view of the nozzle 33. As shown in the figure, the nozzle 33 is provided with a closing portion 333 at the tip (left end in FIG. 3) of a cylindrical nozzle body 331 to close the tip of the nozzle body 331, while the nozzle body 331 near the closing portion 333 is closed. A plurality of ejection holes 335 are provided on the outer peripheral side surface at equal intervals in the circumferential direction and in two rows in the front and rear. Therefore, when a chemical solution is press-fitted from the hose 31 connected to the opposite end portion where the blocking portion 333 of the nozzle body 331 is provided, the chemical solution is ejected from each ejection hole 335 toward the circumferential direction of the nozzle body 331.

  FIG. 4 is a schematic view showing an example of the high-pressure water supply means 50 used in the present invention. As shown in the figure, the high-pressure water supply means 50 has a high-pressure water injection nozzle (hereinafter simply referred to as “nozzle”) 53 attached to one end of a high-pressure washing hose 51 and a high-pressure water supply pump facility (hereinafter referred to as “nozzle”). (It is simply referred to as “pump equipment”) 55. For example, tap water is used as the high-pressure water source. In this example, the nozzle 53 is a rotary nozzle that jets high-pressure water in the circumferential direction while rotating using the pressure of high-pressure water, but other various nozzles may be used. In this example, the pump equipment 55 is configured to be movable on the vehicle 57. The drug injection means 30 is a size that can be moved by human power, but the high-pressure water supply means 50 is a large-sized device mounted on a vehicle.

  FIG. 5 is a cleaning method process diagram showing an example of a method for cleaning (removing) urine stone adhering to the inner wall of the drainage pipe 20 using the medicine injection means 30 and the high-pressure water supply means 50. Hereinafter, a method for cleaning the drain pipe 20 will be described with reference to FIG. Here, the cleaning method of the drain pipe 20 from the 19th floor to the 12th floor after the cleaning of the drain pipe 20 from the 11th floor to the first floor shown in FIG. 1 will be mainly described. As shown in the figure, this cleaning method includes a urolith softening step, a neutralization step, a fresh water cleaning step, and a high-pressure water cleaning step.

[Urolith softening process]
First, the urolith softener is stored in the tank 39 of the medicine injection means 30 shown in FIG. In this example, the trade name “Deolite SP” consisting of a powerful drug acidic solution is used as the urolith softener. Next, the nozzle 33 of the medicine injection means 30 is inserted from the cleaning port 27 of the main pipe 23 on the 19th floor (step ST1). Next, the metering pump 35 is started, and the nozzle 33 is lowered at a constant speed toward the lower side of the main pipe 23 while spraying the urine softener from each of the ejection holes 335 of the nozzle 33 ( Step ST2).

  FIG. 6 is a diagram showing a sprayed state of the urolith softener at this time. In the main pipe 23, as described above, the urine stone 29 adheres substantially uniformly to the entire surface of the inner wall of the pipe. Then, as shown by arrows in FIG. 6, the urine stone softening agent is sprayed radially from the respective ejection holes 335 of the nozzle 33, so that the urine stone 29 which is fixed substantially evenly on the inner peripheral surface of the vertical pipe 23. Can be easily and surely spread and adhered evenly over the entire inner circumference. As a result, not only can the urolith softener infiltrate and soften the entire urine stone 29 adhering to the entire inner wall surface of the main pipe 23, but also the amount of urine softener sprayed can be minimized. Therefore, the cost can be reduced, and the processing load in the public sewer and the treatment tank in the building after discharging these can be reduced. Further, the urinary softener sprayed on the upper portion of the main pipe 23 adheres to the entire inner wall surface of the urolith 29 on the upper side of the main pipe 23, and at the same time, the excess urolith softener hangs downward. Go. That is, if the urinary softener is sprayed while moving the nozzle 33 from the upper part to the lower part of the main pipe 23, the urinary drooping from the top prior to the spraying of the urolith softener by the nozzle 33. After the softening agent adheres and wets the surface of the urine stone 29, the urine stone softening agent sprayed from the nozzle 33 is struck against the surface of the urine stone 29, and the jetting force deepens the urine stone 29 with fine irregularities. Urine stone softener can be further adhered to the portion (inside the fine irregularities).

  Further, as in this example, if the urinary softener is sprayed while moving the nozzle 33 inserted into the main pipe 23 from the upper part of the pipe toward the lower part of the pipe, the nozzle 33 is attached to the lower side of the main pipe 23. As the amount of urinary stone softening agent increases as the urinary stone increases, more urine stone softening agent adheres, and the urinary stone can be softened thicker. On the other hand, the thickness of the urine stone 29 is generally thicker as it goes downward, but according to this example, the thicker the portion, the larger the amount of urine stone softener can be attached. Softening can be performed.

  Furthermore, when a normal pump is used in place of the metering pump 35, the more the nozzle 33 inserted into the main pipe 23 moves downward, the liquid column in the hose 31 in addition to the discharge pressure by the pump. Pressure is applied to the nozzle 33, the flow rate of the urine stone softening agent to be sprayed increases, and it is discharged unnecessarily. Therefore, in this example, the metering pump 35 is used as a pump, and the spraying flow rate of the urinary softener to be sprayed is always kept constant regardless of the position of the nozzle 33 in the main pipe 23. The stone softener was prevented from being sprayed wastefully. In other words, in this example, the nozzle 33 is moved from the upper part of the tube toward the lower part of the tube, and the urine stone softening agent is sprayed in a fixed amount, thereby more effectively with less (less waste) urine stone softening agent. Softening and removal of urine stones.

  Then, the nozzle 33 is lowered to the vicinity of the cleaning port 27 on the eleventh floor (that is, the lowest position in this example), the metering pump 35 is stopped, the nozzle 33 is pulled up and pulled out from the cleaning port 27 on the nineteenth floor. .

  When the amount of urine stone fixed in the main pipe 23 is large, the urine stone softening agent may be sprayed when the nozzle 33 is further pulled up.

  Next, the nozzle 33 of the medicine injection means 30 is inserted from the cleaning port 25 on the end side of the horizontal tube 21 on the 19th floor (step ST3). Next, the metering pump 35 is activated, and the urine stone softening agent is sprayed from the respective ejection holes 335 of the nozzle 33 and is pushed in toward the back direction of the horizontal tube 21 (in the direction of the main tube 23, the distal direction). (Step ST4).

  FIG. 7 is a diagram showing a sprayed state of the urolith softener at this time. In the horizontal tube 21, as described above, many urine stones 29 are attached to the left and right side surfaces of the inner wall of the tube. As shown in FIG. 7, the nozzle 33 moves on the tube bottom, but since the ejection holes 335 are provided on the entire outer periphery of the nozzle 33, the nozzle 33 is also distributed on both the left and right side surfaces and the upper surface. Since the urinary softener sprayed on the upper surface then flows down to the bottom of the tube through the left and right sides, more urinary softener is supplied to both the left and right sides. Stone 29 is softened. This can effectively soften the urine stone 29 adhering to the entire inner wall surface (especially the left and right side walls) of the horizontal tube 21, and can also minimize the amount of urine stone softening agent applied. Therefore, the cost can be reduced, and the processing burden in the public sewer and the treatment tank in the building after these are discharged can be reduced.

  Then, the nozzle 33 is pushed in until the main pipe 23 is reached, the metering pump 35 is stopped, the nozzle 33 is pulled, and pulled out from the 19th floor cleaning port 25. When the amount of urine stone fixed in the horizontal tube 21 is large, the urine stone softening agent may be sprayed when the nozzle 33 is pulled out. The above operation is sequentially performed from the horizontal pipe 21 on the 18th floor to the horizontal pipe 21 on the 12th floor. This completes the urolith softening process.

[Neutralization process]
After the urine stone softening process is completed and a predetermined time (for example, 1 hour) has elapsed, a neutralization process is performed. That is, first, the tank 39 of the medicine injection means 30 is replaced with a tank in which a neutralizing agent is stored. In this example, the trade name “Peace Roux K”, which is a powerful drainage pipe cleaning agent, is used as the neutralizing agent. Next, the nozzle 33 of the medicine injection means 30 is inserted from the cleaning port 27 of the main pipe 23 on the 19th floor (step ST5). Next, the metering pump 35 is started, and is lowered at a constant speed toward the lower side of the main pipe 23 while spraying the neutralizing agent from the ejection holes 335 of the nozzle 33 (step ST6). As a result, as in the case of the urolith softener described in FIG. 6 above, the neutralizing agent is evenly and reliably sprayed on the urolith softener adhering to the entire inner peripheral surface of the main pipe 23. This can be neutralized. Since the amount of the neutralizing agent sprayed at the same time can be minimized, the cost can be reduced. Then, the nozzle 33 is lowered to the vicinity of the cleaning port 27 on the eleventh floor (that is, the lowest position in this example), the metering pump 35 is stopped, the nozzle 33 is pulled up and pulled out from the cleaning port 27 on the nineteenth floor. .

  Next, the nozzle 33 of the medicine injection means 30 is inserted from the cleaning port 25 of the horizontal tube 21 on the 19th floor (step ST7). Next, the metering pump 35 is activated, and the neutralizing agent is sprayed from each of the ejection holes 335 of the nozzle 33 and pushed toward the back direction of the horizontal pipe 21 (the direction of the main pipe 23, the front end direction). (Step ST8). As a result, the nozzle 33 moves on the tube bottom as in the case of the urolith softener described with reference to FIG. 7, but the ejection holes 335 are provided on the entire outer periphery of the nozzle 33, so that neutralization is performed. The agent is also dispersed on the left and right side surfaces and the upper surface of the horizontal tube 21. As a result, not only can the urine stone softener adhering to the entire inner wall surface of the horizontal tube 21 be neutralized evenly and reliably, but also the amount of neutralizing agent to be sprayed can be kept to a minimum. Reduction can be achieved. Then, the nozzle 33 is pushed in until the main pipe 23 is reached, the metering pump 35 is stopped, the nozzle 33 is pulled, and pulled out from the 19th floor cleaning port 25. The above operation is sequentially performed from the horizontal pipe 21 on the 18th floor to the horizontal pipe 21 on the 12th floor. This completes the neutralization step.

  As in this example, if the neutralizing agent is sprayed into the main pipe 23 and each horizontal pipe 21 using the nozzle 33 for spraying the drug, the neutral pipe 23 is fixed to the horizontal pipe 21. The urine stone softening agent adhered to the urine stone 29 is preferable because it can be efficiently neutralized on the entire surface. Since the urine softener is strongly acidic, the nozzle 53 touches the urolith softener when the high-pressure water injection nozzle 53 is inserted into the main pipe 23 or each horizontal pipe 21 in the high-pressure water washing step to be described below. Such a problem can be prevented if the urolith softener is completely neutralized using this neutralization step.

[Fresh water washing process]
After the neutralization step is completed, a fresh water cleaning step is performed. That is, first, fresh water (tap water or the like) is poured as it is from the cleaning port 27 of the main pipe 23 on the 19th floor, and this is washed with fresh water (step ST9). Next, fresh water is introduced as it is through the cleaning ports 25 of the horizontal tubes 21 on the 19th floor to the 12th floor, and these are washed with fresh water (step ST10). The neutralized medicine is washed from the inner wall surface of the main pipe 23 and the inner wall surface of each horizontal pipe 21 neutralized thereby. This completes the fresh water cleaning step. The fresh water cleaning is performed here in a portion where the neutralization is not completely performed (strong acid) when the nozzle 53 for high pressure cleaning is inserted into the main pipe 23 or the horizontal pipe 21 in the subsequent high pressure water cleaning step. This is in order to surely eliminate the risk of damaging the nozzle 53 by touching the portion where the natural urine softener and strong alkaline neutralizer remain. Accordingly, when there is no possibility of damaging the nozzle 53, this fresh water cleaning step may be omitted.

[High pressure water washing process]
After the fresh water cleaning step is completed (or when the fresh water cleaning step is omitted, the neutralization step is completed), a high pressure water cleaning step is performed. That is, first, the nozzle 53 of the high-pressure water supply means 50 is inserted from the cleaning port 27 of the main pipe 23 on the 19th floor and descends to the vicinity of the 11th floor cleaning port 27 (that is, the lowest position in this example) ( Step ST11). Next, the high-pressure water of the activated pump equipment 55 is supplied to the nozzle 53, and the high-pressure water is jetted in the direction of 360 ° from the nozzle (rotating nozzle) 53, and rises upward from the main pipe 23. (Step ST12). As a result, the high-pressure water is strongly struck against the softened urolith surface on the inner peripheral surface of the main pipe 23, and the entire softened urolith is crushed, peeled and removed from below, and washed as a fine lump. It is discharged downward with water. Then, the nozzle 53 is moved to the vicinity of the 19th floor cleaning port 27 (that is, the highest position in this example), the supply of high-pressure water from the pump equipment 55 is stopped, and the nozzle 53 is moved to the 19th floor cleaning port 27. Pull out from.

  Next, the nozzle 53 is inserted from the cleaning port 25 of the horizontal pipe 21 on the 12th floor, and the nozzle 53 is inserted up to the connecting portion with the vertical pipe 23 which is the innermost position (step ST13). Next, the high pressure water from the pump equipment 55 is supplied, and the high pressure water is sprayed from the nozzle 53 in the direction of 360 °, and pulled toward the front side of the horizontal pipe 21 (the direction of the cleaning port 25). (Step ST14). As a result, the high-pressure water is strongly struck against the softened urolith surface on the inner peripheral surface of the horizontal tube 21, and the entire softened urolith is crushed, peeled off and removed from the back side (tip side), and a fine lump. As a result, the water is discharged into the main pipe 23 together with the cleaning water. Then, the nozzle 53 is moved to the vicinity of the cleaning floor 25 on the 12th floor, the supply of high-pressure water from the pump equipment 55 is stopped, and the nozzle 53 is pulled out from the cleaning opening 25 on the 12th floor. The above operation is sequentially performed from the horizontal pipe 21 on the 13th floor to the horizontal pipe 21 on the 19th floor. This completes the high-pressure water washing step.

  The softened part of the urine stone is peeled off as a fine lump by the impact of high-pressure water. In this example, high-pressure water is jetted upward from the position where the main pipe 23 is lowered (or laterally). Since the pipe 21 is moved from the main pipe 23 side toward the front side), the fine lumps are sequentially peeled off from the downstream urine stone. When jetting high-pressure water from the downstream side to the upstream side, even if the urinary stone in the upstream side that has not yet been jetted with high-pressure water falls as a large lump, After that, high pressure water is always injected, so it becomes a small lump. On the other hand, if the softened urolith is peeled off from the upstream side with high-pressure water, it is softened but not yet applied with the high-pressure water impact. There is a risk that the urine stone will be peeled off as a large lump by vibration. The urinary stone that has been peeled off by a large lump may block the main pipe 23. According to this example, such a problem hardly occurs, and it is possible to remove urine stone more effectively and smoothly.

  After the above operation is completed, if there is an upper floor, the same cleaning operation is performed on the upper floor.

  As described above, according to this example, the nozzle 33 for spraying the medicine inserted into the main pipe 23 is moved from the upper part of the pipe toward the lower part of the pipe while the urine softener is sprayed radially. Not only can the entire urine stone 29 adhering to the entire inner wall surface of the main pipe 23 be softened, the amount of urine stone softening agent to be sprayed can be minimized, and the excess urine stone softening agent can be The urinary stone can be softened more effectively by using the drooping of the high pressure water while the nozzle 53 for high-pressure water injection inserted into the main pipe 23 is lifted from the lowest position. By cleaning the inner wall surface of the main pipe 23, the softened urine stone can be peeled off as a fine lump and the drain pipe is not clogged. That is, by both the urine stone softening step and the high-pressure water washing step, synergistically effective and smooth urine stone softening and removal can be performed.

  By the way, there is a possibility that the urine stones transferred to the downstream side of the main pipe 23 as a fine lump by the high-pressure cleaning accumulate in, for example, the bent portion a1 shown in FIG. In order to solve this problem, for example, an in-pipe monitoring camera (with a camera installed at the end of the cable) is inserted from the camera insertion port 29 installed in the vicinity of the bent portion a1 to monitor the inside of the bent portion a1, The high pressure water washing step is performed. When it is detected that a certain amount or more of urine stones have accumulated in the bent portion a1, another nozzle 53 of the same high-pressure water supply means 50 as described above is inserted into the drain pipe 20 from the downstream side of the bent portion a1. It is inserted and moved into the bent portion a1, and high-pressure water is jetted from the nozzle 53, thereby pushing the mass of urine stone in the bent portion a1 to the downstream side. If comprised in this way, even when there exists the bending part a1 in the downstream of the main pipe 23, a high pressure water washing | cleaning process can be performed smoothly, without the urine stone which peeled in the bending part a1 accumulating. The in-pipe monitoring camera may be monitored by inserting it from the downstream side of the drain pipe 20 to the vicinity of the bent portion a1.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible. Note that any shape, structure, or material not directly described in the specification and drawings is within the scope of the technical idea of the present invention as long as the effects and advantages of the present invention are exhibited. For example, in the above example, the neutralizing agent was sprayed using the nozzle for spraying the drug in the neutralization process, but in some cases, the nozzle for spraying the drug was not used in the neutralization process, but stored directly in a tank or the like. The urinary softener may be neutralized by pouring the Japanese medicine into the vertical pipe or the horizontal pipe. When configured in this way, reliable neutralization cannot be performed as in the case of using a nozzle for spraying medicine, but if the high-pressure water injection nozzle can tolerate some adhesion of urine stone softener, the work is simplified. This is effective in achieving The shape and structure of the chemical solution spray nozzle can be variously changed. In short, any configuration may be used as long as it is a chemical solution spray nozzle provided with a plurality of ejection holes in the circumferential direction. In the above example, the drain pipe dedicated to the urinal has been described. However, the present invention can be similarly applied to a drain pipe for a Western / Japanese style toilet (large). Further, in the above example, the nozzle for spraying medicine is inserted from the cleaning port on the end side of the horizontal tube. For example, the toilet etc. on the end side (uppermost) of the horizontal tube is removed and the nozzle etc. May be inserted. In the above example, in each step, the horizontal pipes are cleaned after cleaning the vertical pipes. Conversely, the vertical pipes may be cleaned after cleaning the horizontal pipes.

10 Urinal (toilet)
20 Drain pipe 21 Horizontal pipe (drain pipe)
23 Stand main (drainage pipe)
25 Cleaning Port 27 Cleaning Port 29 Camera Insertion Port 30 Drug Injection Means 31 Hose (Hose for Drug Spraying)
33 nozzle (nozzle for spraying medicine)
335 Ejection hole 35 Metering pump (metering pump for drug supply, pump for drug supply)
37 Motor 39 Tank 50 High-pressure water supply means 51 High-pressure washing hose 53 Nozzle (high-pressure water injection nozzle)
55 Pump equipment (high pressure water supply pump equipment)

Claims (4)

A drainage pipe cleaning method for guiding drainage from a toilet installed on each floor to a horizontal pipe, and further draining the horizontal pipe from the horizontal pipe to a vertical main pipe,
A drug spraying nozzle comprising a drug spraying nozzle connected to one end of the drug spraying hose, a drug supply pump connected to the other end, and a plurality of spray holes provided in the circumferential direction in the drug spraying nozzle;
A high-pressure water supply means comprising a high-pressure water injection nozzle connected to one end of the high-pressure washing hose and a high-pressure water supply pump equipment connected to the other end;
The urine stone softener is applied to the urine stone fixed to the inner wall surface of the main pipe by inserting the drug spray nozzle from the cleaning port provided in the main pipe and spraying the urolith softener from each ejection hole. A urine stone softening process to soften the urine stone by attaching,
Next to the urolith softening step, a neutralization step of neutralizing the urolith softener by introducing a neutralizing agent into the standing main pipe,
After the neutralization step, the softened urine stone is washed by inserting the high-pressure water injection nozzle from the cleaning port provided in the main pipe and spraying high-pressure water to wash the inner wall surface of the main pipe. A high-pressure water washing process to peel off,
A method for cleaning a drain pipe, comprising: A drain pipe cleaning method according to claim 1,
In the urine stone softening step, the urine stone softening agent is moved from the respective ejection holes of the drug spray nozzle inserted through the cleaning port provided in the main pipe while moving toward the downstairs while spraying the urine stone softener. The urinary stone softening agent is attached to the urinary stone fixed to the inner wall surface of the main pipe to soften the urinary stone,
On the other hand, in the high-pressure water washing step, the high-pressure water injection nozzle inserted from the cleaning port provided in the main pipe is lowered to a predetermined position, and high-pressure water is injected from the high-pressure water injection nozzle at that position to stand as it is. A drainage pipe cleaning method, wherein the softened urolith is peeled off by cleaning the inner wall surface of the main pipe while pulling up the main pipe. A drain pipe cleaning method according to claim 2,
The drug supply pump is a metering pump, and the spray flow rate when moving toward the downstairs while spraying the urine softener from the drug spray nozzle is always maintained constant. How to wash the tube. A method for cleaning a drain pipe according to claim 1, 2 or 3,
In the urolith softening step, the urine adhered to the inner wall surface of each horizontal tube by further inserting the drug spray nozzle from the end side of each horizontal tube and spraying the urolith softener from each ejection hole. The urine stone softener is attached to the stone to soften the urine stone,
On the other hand, in the high-pressure water washing step, the softened urine is further washed by inserting the high-pressure water jet nozzle from the end side of each horizontal tube after the urine stone softening agent has been introduced to wash the inner wall surface of the horizontal tube. A drainage pipe cleaning method characterized by peeling stones.

Images