JP5635369B2 - Chemical water flow pipe for chemical liquid supply device - Google Patents

Description

  The present invention relates to a chemical liquid water pipe that connects between an automatic cleaning water supply apparatus and a chemical liquid supply apparatus in order to supply a predetermined amount of chemical liquid to a urinal after supplying the cleaning water to the urinal.

  In recent years, for men's urinals in toilets at stations, etc., after use, the cleaning water is automatically sprayed from the spray hole of the toilet's small holes into the toilet for a predetermined time and washed. In addition, a system is installed in which a predetermined amount of chemical liquid is sprayed from the chemical liquid supply device through the chemical water flow pipe into the urinal through the spray hole to prevent adhesion of urinary stones and suppress the generation of irritating odors.

In addition, in order to improve the design of urinals from the standpoint of improving the cleanliness of toilets at stations, etc., and to prevent the washing water automatic supply device itself from being seen from the outside, A urinal (hereinafter referred to as a US-integrated urinal) in which an automatic cleaning water supply device is accommodated in a storage portion formed in the upper part of the urinal has been proposed.
A flush valve automatic washing water supply device, for example, driven by an electromagnetic valve, stored in a storage unit of a US-integrated urinal, for example, has a water pipe penetrating a wall surface where a urinal is installed, and a water spray hole. The cleaning water supply pipe is connected between the flush valve and the spray pipe. When the sensor detects that a person who has finished using the urinal has left, the solenoid valve drives the flush valve, and the flush water from the water pipe is emitted from the flush water supply pipe while the flush valve is open. Water is passed through the water pipe and sprayed into the toilet from the spray hole.
Further, a chemical water flow pipe made of a rubber tube is branched from the cleaning water supply pipe to the chemical liquid supply apparatus, and a part of the cleaning water is passed through the chemical liquid water supply pipe to the chemical liquid supply apparatus.

  The chemical liquid supply device includes a float valve whose opening position is a position lowered downward, and cleaning water is supplied from the chemical liquid water pipe through the float valve into the container body in which the solid drug is accommodated. When the float valve moves up as the water level rises in the container body, and the valve body of the float valve comes into contact with the valve seat, the supply of cleaning water to the container body is stopped and solidified with a predetermined amount of cleaning water in the container body. A part of the medicine is melted, and a predetermined amount of the medicine is stored in the container body.

  In this state, if the flush valve is open, the water pressure of the washing water from the chemical water flow pipe acts on the valve body of the float valve through the washing water supply pipe, so that the float valve is kept closed. ing. Then, with the closing of the solenoid valve, when the supply of the wash water is stopped, that is, when the supply of the wash water into the urinal is finished, the water pressure of the wash water in the chemical solution water pipe decreases, and the float valve Moves downward to open the valve, and the chemical in the container body flows into the washing water supply pipe through the chemical liquid flow pipe, and the chemical liquid is supplied from the spray pipe into the urinal through the spray hole.

By the way, since the inner diameter of the chemical water flow pipe branched from the cleaning water supply pipe is smaller than the inner diameter of the cleaning water supply pipe, the pressure of the cleaning water flowing in the cleaning water supply pipe toward the chemical liquid supply device is high, and the float valve When the valve body of the float valve comes into contact with the valve seat instantaneously due to water hammer applied to the valve body, a phenomenon may occur in which the valve body sticks to the valve seat and does not leave.
In view of this, a device has been devised in which a clip is sandwiched between a part of the rubber chemical water pipe and the flow rate is adjusted by reducing the cross-sectional area of the chemical water pipe to prevent the occurrence of water hammer on the float valve.

However, such clip fastening has a problem that the flow rate cannot be adjusted uniquely because it depends on the experience and intuition of the operator.
In addition, since the chemical liquid water pipe is made of rubber, there is room for improvement in appearance from the state where the chemical liquid supply pipe is drawn from the storage unit of the US-integrated urinal to the chemical liquid supply device.
Furthermore, the chemical solution supply device needs to be fixed to the wall surface with a screw or the like, and when installing a new urinal or attaching a new chemical solution supply device to an existing US integrated urinal, etc. It has been desired to shorten the work time by eliminating the fixing of the supply device to the wall.

Japanese Patent Laid-Open No. 2006-200264 JP 2010-048077 A

The object of the present invention is made in view of such a problem, and can reliably adjust the flow rate of cleaning water to the chemical solution supply device, and can easily grasp the flow rate adjustment state, and has a clean appearance. It is intended to provide a chemical liquid water pipe for a chemical liquid supply apparatus.
Another object of the present invention is to provide a chemical solution water pipe for a chemical solution supply device without fixing the chemical solution supply device to a wall surface or the like.

  The structure of the chemical liquid water pipe 3 for the chemical liquid supply device that realizes the object of the present invention is described with reference to FIG. 4 of the embodiment of the present invention. The screw cap part (fixed to one end of the metal water main pipe part 35) The chemical liquid supply device 4 is attached to the device support portion 36, the flow control valve portion 32 having a cock valve structure is fixed to the other end of the water flow main pipe portion 35, and the cleaning water automatic supply device is further connected to the flow control valve portion 32. A branch pipe connecting part (connecting pipe part) 31 to which a branch pipe 248 branched from the cleaning water supply pipe system of 24 is connected is provided, and the chemical liquid water pipe 3 is formed in a structure that is straight in the horizontal direction, and the flow rate is adjusted. The flow rate can be adjusted by rotating the rotary valve body 34 of the valve portion 32 within a rotation range of 180 degrees.

According to the present invention, an appropriate flow rate adjustment of the supplied wash water is ensured by the flow rate control valve portion provided in the chemical water flow pipe that forms a piping system for supplying a part of the wash water to the chemical solution supply device attached to the urinal. Easy to do.
Moreover, by forming the water main part of the chemical liquid water pipe with a rigid pipe material such as a copper pipe, for example, the water main pipe part is horizontally extended from the inside of the device storage part of the urinal, and the chemical liquid is provided at the tip thereof. The supply device can be cantilevered, and fixing means such as screwing the chemical solution supply device to the wall surface or the like is not necessary, so that the installation work time can be shortened and the appearance is improved.

BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic of the whole urinal system to which one Embodiment of the chemical | medical solution water pipe for chemical | medical solution supply apparatuses by this invention is applied. FIG. 2 is a top perspective view of the US-integrated urinal with the urinal lid member shown in FIG. 1 removed. It is a top view at the time of installation of the chemical | medical solution water flow pipe shown in FIG. It is an external appearance perspective view of the chemical | medical solution water flow pipe shown in FIG. It is a front view of the chemical | medical solution water pipe shown in FIG. It is a front view of the valve body accommodating part of the flow control valve part provided in the chemical | medical solution water flow pipe shown in FIG. It is AA arrow sectional drawing of FIG. (A), (b), (c) is a figure explaining operation | movement of a chemical | medical solution supply apparatus. (A), (b) is a figure which shows the valve opening degree of the flow control valve provided in the chemical | medical solution water pipe, and is a BB arrow sectional drawing of FIG.

Hereinafter, the present invention will be described based on embodiments shown in the drawings.
FIG. 1 is a schematic view of the entire urinal system, and FIG. 2 is an enlarged perspective view of the upper part of the US-integrated urinal with the lid member of the urinal shown in FIG. 1 removed.

1 and 2, the urinal washing system 1 includes a washing water automatic supply device 24 housed in a device housing portion 22 formed integrally with an upper portion of the urinal 2, and an automatic washing water supply device 24 at one end side. The chemical solution water pipe 3 branched and connected to the liquid crystal device and the chemical solution supply device 4 to which the other end side of the chemical solution water pipe 3 is connected.
In addition, as an apparatus in which the urinal 2 and the apparatus accommodating portion 22 that accommodates the automatic cleaning water supply apparatus 24 are integrally formed, for example, there is a US-integrated urinal.

The urinal 2 has a bowl surface 21 in the shape of a vertically long and narrow container having an open front surface, and is formed of pottery having an open back surface. The top of the bowl surface 21 has a spray hole 23 for spraying washing water on the entire bowl surface 21, and the bottom of the bowl surface 21 drains the washing water sprayed on the bowl surface 21 to the outside of the urinal body 2. Drain holes 29 are provided respectively.
A urinal cover member 25 is detachably covered on the device storage portion 22 formed in a rectangular container shape.

  The cleaning water automatic supply device 24 stored in the device storage unit 22 includes a flush valve 245 driven by an electromagnetic valve 244. As shown in FIG. 2, the automatic cleaning water supply device 24 has a stop cock 243 connected to a water supply pipe 241 such as a water pipe for supplying cleaning water penetrating the wall surface 5, and a controller following the stop cock 243. 27 is connected to a solenoid valve 244 that is controlled by a solenoid valve 27, and a flash valve 245 that is controlled to open and close by the solenoid valve 244 is also connected. An L-shaped discharge short pipe 242 is provided on the discharge side of the flash valve 245, and one end side of the cleaning water supply pipe 246 is connected to the discharge short pipe 242.

  Further, one end side of the water spray side connection rubber tube 247 is connected to the water spray pipe 249 communicating with the water spray hole 23, and the other end side of the water spray side connection rubber tube 247 is connected to the other end side of the cleaning water supply pipe 246. Yes.

  On the other hand, a branch pipe 248 made of a rubber pipe is branched from the cleaning water supply pipe 246 and accommodated. A detection unit 26 is provided on the front surface of the device storage unit 22, and the presence or absence of a user is determined by the detection unit 26 to control the electromagnetic valve 244. When the electromagnetic valve 244 is opened, the flush valve 245 is driven to supply cleaning water to the cleaning water supply pipe 246, and the cleaning water is also supplied to the branch pipe 248. Further, the distal end portion of the branch pipe 248 is inserted into the branch pipe connecting portion 31 on one end side of the chemical liquid water pipe 3, and the cleaning water is supplied to the chemical liquid water pipe 3.

  In the present embodiment, the chemical water flow pipe 3 has a flow control valve portion 32 having a cock valve structure attached to one end side of a long water flow main pipe portion 35, and a branch pipe connection portion on one end side of the flow control valve portion 32. 31 is attached. In addition, a screw cap portion 36 that is screwed into a connection screw portion 43 formed in a tubular shape of the chemical solution supply device 4 and communicates with the connection screw portion 43 is attached to the other end side of the water flow main pipe portion 35. .

  In the present embodiment, the chemical solution water pipe 3 configured as described above has a straight pipe structure that is straight in the horizontal direction as shown in FIG. 5, and has a plurality of locations in plan view as shown in FIGS. 3 and 4. The bent tube structure has fold points (knuckle points) 351, 352, 353, and 354.

  Moreover, the chemical | medical solution water flow pipe 3 in this embodiment comprises the water flow main pipe part 35 with a rigid material, for example, a metallic pipe material, and the flow control valve part 32 with a metal material.

The structure of the chemical liquid water pipe 3 will be further described with reference to FIGS.
A notch 28 is formed in the upper end deep part of the side wall 30 of the urinal 2, and a gap into which the water main pipe part 35 enters between the wall surface 5 is secured by the notch 28. Then, the flow rate adjusting valve portion 32 is accommodated in the device accommodating portion 22, the medicinal solution water conduit 3 is installed so that the water main portion 35 is fitted into the notch portion 28, and the urinal lid member 25 is accommodated in the device from above. Cover the part 22. In this state, the chemical liquid water pipe 3 is small with the flow rate adjusting valve portion 32 abutting on the back surface of the urinal lid member 25 and the water main pipe portion 35 abutting the notch 28 as a fulcrum. It extends along the wall surface 5 from the toilet bowl 2, and the chemical | medical solution supply apparatus 4 is supported by the extended edge part. In this case, the chemical solution supply device 4 can be supported only by the chemical solution water pipe 3 without being screwed to the wall surface 5.

  On the other hand, since the water main pipe part 35 can be a pipe that is as clean as possible as close to the wall surface 5 as possible, as shown in FIGS. 3 and 4, four knuckle points 351 to 354 are provided, The straight portion formed between the second knuckle point 352 and the third knuckle point 353 is as close to the wall surface 5 as possible. In the present embodiment, since the position of the connection screw portion 43 of the chemical solution supply device 4 is away from the wall surface 5, the pipe portion is bent by the third knuckle point 353 and the fourth knuckle point 354 so that the screw cap portion 36 is attached to the wall surface. It is arranged at a position away from 5. In addition, the position of the flow rate control valve portion 32 is arranged at a position away from the wall surface 5 by the first knuckle point 351 and the second knuckle point 352, and the arrangement position of the chemical water flow pipe 3 is given a certain degree of freedom. Yes.

  In the present embodiment, the chemical liquid water pipe 3 is configured to extend from the space formed between the right notch 35 and the wall surface 5 of the device storage portion 22 to the outside of the device storage portion 22. The invention is not particularly limited to this, and may be configured to extend from the space formed between the left notch (not shown) of the device storage portion 22 and the wall surface 5 to the outside of the device storage portion 22. good.

  The flow control valve portion 32 having a cock valve structure includes a cylindrical rotary valve body 34 having a communication hole 343 formed in the radial direction, and a hexagonal column-shaped valve body housing portion 33 into which the rotary valve body 34 is rotatably inserted. And the flow rate of the liquid passing through the water passage 331 formed in the valve body accommodating portion 33 is adjusted by the rotation of the rotary valve body 34. The rotary valve body 34 has a fully open and fully closed valve opening in a rotation range of 180 degrees, and adjusts the flow rate of the cleaning water supplied to the chemical solution supply device 4 according to the valve opening therebetween.

  As shown in FIG. 6, the rotary valve body 34 has a disk-shaped operation portion 341 having an outer diameter larger than the outer diameter of the columnar valve body portion 342 on the same axial center on the upper portion of the cylindrical valve body portion 342. The structure is integrally formed. In a state where the cylindrical valve body portion 342 of the rotary valve body 34 is inserted into the insertion hole of the valve body housing portion 33 until the operation portion 341 contacts the upper surface of the valve body housing portion 33, the cylindrical valve penetrating from the insertion hole By attaching a C-type retaining ring 348 to a retaining ring groove 345 formed on the outer periphery of the through end of the body part 342, the rotary valve body 34 is prevented from coming off, and the rotary valve body 34 can be rotated in the vertical direction without play. . The cylindrical valve body portion 342 is formed with a seal groove 344 in which a seal ring 347 is mounted up and down across the communication hole 343 to prevent leakage of cleaning water.

  Here, on the upper surface of the operation unit 341, as shown in FIG. 3 and FIG. 6, a concave groove 346 having a single-character concave section is formed on the diameter line, and the tip of the minus driver is engaged with the concave groove 346. Thus, the rotary valve body 34 can be rotated. In the present embodiment, by aligning the direction in which the groove 346 is formed and the direction in which the communication hole 343 is opened, the angle of the groove 346 and the direction of the communication hole 343 coincide, and the valve opening can be easily grasped visually. Can do.

  In the present embodiment, the inner diameter of the water main pipe section 35 is formed to be smaller than the inner diameter of the branch pipe connecting section 31 located on the upstream side when cleaning water is supplied. In addition, the inner diameter of the water passage 331 of the flow rate control valve portion 32 is the same as the inner diameter of the branch pipe connection portion 31. Thus, by providing a difference in the inner diameter of the pipe, the cross-sectional area in the water flow main pipe portion 35 when the cleaning water is supplied can be reduced by disconnecting the pipe (the branch pipe connecting portion 31) on the inflow side of the cleaning water. It is narrower than the area, and the flow rate of the cleaning water flowing toward the chemical solution supply device 4 in the water flow main pipe 35 is increased. Therefore, even if the flow rate of the cleaning water decreases due to the flow rate reduction adjustment of the flow rate adjusting valve unit 32, the flow rate of the cleaning water increases when passing through the water flow main unit 35 again, and the cleaning water is reliably transferred into the chemical solution supply device 4. Can be supplied.

  In addition, by reducing the outer diameter of the straight pipe line from the second knuckle point 352 to the third knuckle point 353, the water main pipe part 35 of the chemical liquid water pipe 3 is arranged with a margin in the notch 28. be able to.

  Moreover, in this embodiment, the water main pipe part 35 can be bent according to the installation location of the chemical solution supply device 4 by forming the water main pipe part 35 from a material that can be bent easily such as a copper pipe. Further, the water main pipe part 35 can be held at the three points of the notch part 28 formed on the side wall 30 of the apparatus housing part 22, the wall surface 5 and the urinal cover member 25.

  As shown in FIGS. 3 to 5, the screw cap portion 36 has a bottomed cylindrical shape, and is attached upward with a bent pipe connected to the outer peripheral side surface. A female screw is cut on the inner peripheral surface of the screw cap portion 36, and is screwed onto a male screw formed on the outer peripheral portion of the connection screw portion 43 formed on the chemical solution supply device 4. Sealed connected.

  As shown in FIG. 7, the chemical solution supply device 4 includes a drug container portion 41 whose upper surface opening is covered with a drug container lid portion 42, and a float valve 47 disposed on the bottom side of the drug container portion 41. ing.

  As shown in FIG. 7, the drug container portion 41 contains a solid drug 46 inside, and a connecting screw having a cylindrical shape extending in the vertical direction constituting the float valve 47 and having an inner diameter hole 432 on the bottom surface. The part 43 is fixed. The medicine container lid part 42 covering the upper opening of the medicine container part 41 is formed with a plurality of slit grooves (not shown) extending in the width direction on the upper surface, and when the solid medicine 46 is dissolved in the washing water from the slit grooves. The air containing the dissolved component that is generated can be released out of the drug container 41. The dissolved odor released to the outside can also reduce the irritating odor generated from the urinal floating in the toilet.

  On the upper side surface of the connection screw portion 43, a water channel hole 44 is provided in communication with the inner diameter hole 432 so as to face the drug container portion 41. The connecting screw portion 43 has a valve seat 431 formed at the lower end thereof, and a valve body 453 that contacts the valve seat 431 is attached to a lower end of a valve rod 452 that is inserted with a gap in the inner diameter hole 432. Further, a float 451 located in the medicine container 41 is attached to the upper part of the valve rod 452, and the valve movable body 45 is configured by the valve rod 452, the valve body 453, and the float 451.

  As shown in FIG. 8A, when the valve body 453 is separated from the valve seat 431 at the position lowered by the dead weight of the valve movable body 45, the float valve 47 that allows the inflow of cleaning water is opened. . In this valve-opened state, the drug solution water pipe 3 communicates with the drug container portion 41 through the inner diameter hole 432.

  As shown in FIG. 8B, when the cleaning water flows into the drug container 41 through the inner diameter hole 432 of the connection screw 43 through the chemical solution water pipe 3 in the open state of the float valve 47, the valve movable body 45 is The buoyancy of the float part 451 moves up as the level of the washing water flowing into the medicine container part 41 rises. And as shown in FIG.8 (c), when the valve body 453 contact | abuts to the valve seat 431, the float valve 47 will be in a valve closing state, and the inflow of washing water will be stopped.

  In the closed state of the float valve 47, when the state in which the water pressure is applied to the valve body 453 by the washing water in the chemical liquid flow pipe 3 is maintained, the downward movement of the valve movable body 45 is prevented, and the drug container portion The washing water in 41 dissolves the solid medicine 46, and the washing water in the medicine container 41 becomes a chemical solution and is held in the container.

  Then, with the float valve 47 closed, when the flush water in the chemical liquid flow pipe 3 flows back toward the spray hole 23 along with the termination of the flush water spray to the urinal 2, the valve movable body 45 is moved by its own weight. The drug solution in the drug container 41 is supplied into the drug solution water pipe 3 through the inner diameter hole 432 of the connection screw part 43, and from the washing water supply pipe 246 through the branch pipe 248, to the spray-side connection rubber pipe 247, Water is sprayed from the spray hole 23 to the urinal 2 through the spray pipe 249.

  The flow rate adjustment valve unit 32 provided in the chemical liquid flow pipe 3 adjusts the flow rate of the high-pressure washing water supplied from the washing water supply pipe 246 through the branch pipe 248 and sends it to the water flow main pipe unit 35 to supply the chemical liquid supply device. Pass water toward 4 If the flow rate sent to the water main pipe part 35 is small, the sticking phenomenon between the valve body 453 of the float valve 47 and the valve seat 431 does not occur, but a predetermined amount of washing water is not stored in the medicine container part 41. For this reason, from the fully open state of the flow rate adjustment valve portion 32 shown in FIG. 9A, for example, as shown in FIG. 9B, the rotation angle of the rotary valve body 34 is adjusted to determine the optimum valve opening. be able to.

  In addition, if the structure which attached the branch pipe 248 to the washing water supply pipe 246 as the chemical liquid water pipe 3 and connected the chemical liquid water pipe 3 to the branch pipe 248 is integrated, for example, the chemical liquid supply device 4 is not provided. The existing US-integrated urinal can be immediately changed to a urinal system including the chemical solution supply device 4 simply by attaching this integrated component instead of the existing washing water supply pipe.

  In the above-described embodiment, the method of changing the flow path area by rotating the rotary valve body 34 with respect to the valve body housing portion 33 as the chemical liquid water pipe 3 has been described, but the flow rate flowing into the chemical liquid supply device 4 is changed. Any mechanism can be used as long as it can be adjusted, and the mechanism is not particularly limited to this. As another embodiment, for example, a flow rate adjustment plate (not shown) that moves back and forth vertically or horizontally may slide to change the flow path area. With such a configuration, parts such as a washer for fixing the rotary valve body 34 as in the present invention are not used.

  While one embodiment of the invention has been described, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention.

DESCRIPTION OF SYMBOLS 1 Urinal washing system 2 Urinal 21 Bowl surface 22 Device storage part 23 Spray hole 24 Washing water automatic supply device 25 Urinal lid member 26 Detection part 27 Controller 28 Notch 29 Drain hole 30 Side wall 241 Water supply pipe 242 Discharge short pipe 243 Water stop valve 244 Solenoid valve 245 Flush valve 246 Wash water supply pipe 247 Spray water side connection rubber tube 248 Branch pipe 249 Spray pipe 3 Chemical liquid water pipe 31 Branch pipe connection part (connection pipe part) 32 Flow control valve part 33 Valve body accommodation Part 34 Rotating valve body 35 Water main pipe part 36 Screw cap part (device support part)
331 Water passage 341 Operation portion 342 Cylinder valve body portion 343 Communication hole 344 Seal groove 345 Retaining ring groove 346 Concave groove 347 Seal ring 348 C type retaining ring 351-354 Knuckle point (break point)
DESCRIPTION OF SYMBOLS 4 Chemical solution supply device 41 Drug container part 42 Drug container cover part 43 Connection screw part 44 Water channel hole 45 Valve movable body 46 Solid medicine 47 Float valve 431 Valve seat 432 Inner diameter hole 451 Float 452 Valve rod 453 Valve body 5 Wall surface

Claims (8)

Wash water from the branch pipe branched from the washing water automatic supply device stored in the device storage part of the urinal is supplied to the chemical solution supply device through the rigid water supply main unit, and the chemical solution from the chemical solution supply device is supplied. A chemical solution water supply pipe for a chemical solution supply device that supplies the branch pipe through the water supply main pipe portion,
An apparatus support section fixed to the washing water outflow side of the water main section, capable of passing water with the chemical liquid supply apparatus, and capable of supporting the chemical liquid supply apparatus;
A flow rate adjusting valve portion that is fixed to the wash water inflow side of the water flow main portion and that can adjust the flow rate of the wash water flowing into the water flow main portion
A connecting pipe portion that is connectable to the branch pipe, allows washing water to flow from the branch pipe, and is fixed to the washing water inflow side of the flow rate control valve section;
A chemical solution water pipe for a chemical solution supply device, comprising:   2. The chemical liquid flow pipe for a chemical liquid supply apparatus according to claim 1, wherein an inner diameter of the water flow main pipe part is smaller than an inner diameter of the flow rate adjusting valve part on a washing water outflow side.   The chemical liquid water pipe for a chemical liquid supply apparatus according to claim 1 or 2, wherein the water main pipe part is a copper pipe.   The outer diameter of the water main pipe part is set to a size that fits in a notch formed in the upper part of the side wall of the apparatus storage part. Chemical liquid water pipe. While accommodating the flow control valve unit to the device accommodating portion, according to claim 4, characterized in that the passage Mizumoto tube portion was extendable outwardly of the device accommodating portion through said notch Chemical liquid water pipe for chemical liquid supply device.   The flow rate adjusting valve portion is formed by a cock valve structure, and the valve opening degree can be adjusted by rotating the rotary valve body in a range of 180 degrees, and an index provided on the upper surface of the rotary valve body indicates the valve opening degree. A chemical solution water pipe for a chemical solution supply device according to any one of claims 1 to 5, wherein: The through Mizumoto tube portion, while supporting the chemical liquid supply device to the device support portion, to any one of claims 1 to 6, characterized in that it comprises a one lasting support capable rigidity the chemical supply device A chemical solution water pipe for the chemical solution supply device described. A urinal having a bowl surface, a device accommodating portion formed integrally with the urinal,
Located on the user side of the device housing unit, a detection unit for detecting the presence or absence of the user,
A washing water automatic supply device that is housed inside the device housing portion and automatically supplies cleaning water for washing the bowl surface to the bowl surface based on the detection result of the detection unit,
A branch pipe branched from the washing water automatic supply device and into which a part of the washing water from the washing water automatic supply device flows,
It has a chemical solution water pipe according to any one of claims 1 to 7, wherein the cleaning water flowing into the branch pipe is supplied to a chemical solution supply device, and the chemical solution from the chemical solution supply device is supplied to the branch tube. The urinal washing system is characterized.

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