JP2014025320A - Chemical-solution feeding device for flush toilet bowl - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chemical-solution feeding device for a flush toilet bowl, capable of preventing a nozzle from drying.SOLUTION: A chemical-solution feeding device 10 for a flush toilet bowl comprises: a wash water passage section 20 connected to a wash water supply passage and reaching a discharge port for discharging wash water into the flush toilet bowl; a wash water taking-in chamber 30 into which the wash water passing through the wash water passage section 20 is taken; a chemical-solution storage section 40 for storing a chemical-solution; and a chemical-solution supply mechanism equipped with a nozzle 42 attached to the chemical-solution storage section 40 and capable of feeding the chemical-solution to the wash water taking-in chamber by a predetermined quantity. The wash water is taken into the wash water taking-in chamber 30 and mixed with the chemical-solution. The wash water mixed with the chemical-solution is pushed out to the wash water passage section 20 by expansion of gas in the wash water taking-in chamber 30. A wash water residue part 31 for reserving a part of wash water is provided in the wash water taking-in chamber 30, and the entire nozzle 42 is provided within a height range of the wash water residue part 31.

Description

  The present invention relates to a chemical supply device for a flush toilet that supplies a chemical for the purpose of disinfection, deodorization, washing, and the like when supplying flush water to a flush toilet.

  In general, flush toilets are treated with various chemicals for the purpose of disinfection, deodorization, washing, and the like. This chemical treatment method varies depending on the type of flush toilet, but for example, there is a method in which a chemical is directly put into a toilet bowl or a washing water storage tank, and a chemical is placed in a water supply part of the washing water storage tank. However, in such a method, there are various problems such as frequent and uneconomical drug exchange work, and these problems are particularly serious in public toilets with many uses.

Therefore, conventionally, as shown in Patent Document 1, every time washing water flows into a flush toilet (especially a urinal), a necessary amount of chemical solution for the purpose of disinfection, deodorization, washing, etc. is automatically supplied to the flush toilet. 2. Description of the Related Art A chemical supply device for a flush toilet that supplies water is known.
The chemical supply device for flush toilets of Patent Document 1 includes a wash water passage portion connected to a wash water supply path leading to a discharge port for discharging wash water into the flush toilet, and an intake port facing the wash water passage portion. A wash water intake chamber that takes in the wash water passing through the wash water passage portion and is formed in a sealed manner except for the intake port, and a first chemical chamber that communicates with the wash water intake chamber And a second chemical solution chamber communicated with the first chemical solution chamber, and a chemical solution supply mechanism for supplying the chemical solution into the second chemical solution chamber.

  The medicinal solution supply mechanism is provided with a medicinal solution containing portion for containing medicinal solution, and attached to the medicinal solution containing portion and facing the second medicinal solution chamber, and can supply medicinal solution to the second medicinal solution chamber by a predetermined amount. In this way, the nozzle has a very small inner diameter. Wash water passing through the wash water passage is taken into the wash water intake chamber, compresses the gas in the wash water intake chamber, and is mixed with the chemical solution. When the pressure in the washing water passage portion decreases, the washing water mixed with the chemical solution is pushed out to the washing water passage portion by the expansion of the gas in the washing water intake chamber.

JP 2010-48077 A

  Since the chemical supply device for flush toilets of Patent Literature 1 pushes out the cleaning water mixed with the chemical using the expansion of the gas compressed in the cleaning water intake chamber to the cleaning water passage, the cleaning water intake chamber It is not necessary to provide a valve mechanism between the cleaning water passage portion and the washing water passage portion, and the structure is simple and the device configuration is compact. On the other hand, the inner diameter of the nozzle is as small as 0.5 mm or less, and the chemical solution has a predetermined viscosity. Therefore, when the nozzle is dried, the nozzle may be clogged. Therefore, it is necessary to manage the filling amount of the chemical solution into the chemical solution storage unit so that the nozzle is always immersed in the chemical solution. However, the chemical solution may not be replenished in time for some reason.

  The present invention has been made in view of the above, and it is an object of the present invention to provide a flush toilet bowl chemical supply device that can prevent the nozzle from drying even when the chemical liquid in the chemical liquid storage unit is reduced to a predetermined amount or less.

  In order to solve the above-described problems, a flush toilet flushing chemical supply apparatus according to the present invention is a flush toilet flushing chemical supply apparatus for supplying a flush solution to a flush toilet, wherein the flush water is contained in each flush toilet. A cleaning water passage section connected to a cleaning water supply path leading to a discharge port for discharging the cleaning water, a cleaning water intake chamber into which the cleaning water passing through the cleaning water passage section is taken in, and the vicinity of the upper portion being the cleaning water intake chamber A chemical solution storage unit that stores a chemical solution that is communicated in the vicinity of the upper portion of the liquid crystal and a nozzle that is attached to the chemical solution storage unit and that can supply a predetermined amount of the chemical solution to the cleaning water intake chamber. Then, the washing water passing through the washing water passage part is taken into the washing water intake chamber, compresses the gas in the washing water intake chamber and is mixed with the chemical solution, and the pressure of the washing water passage part decreases. The Then, the cleaning water mixed with the chemical liquid is pushed out to the cleaning water passage portion by the expansion of the gas in the cleaning water intake chamber, and the cleaning water mixed with the chemical liquid is the cleaning water. A cleaning water residual portion that allows a part of the cleaning water to remain when being pushed out from the intake chamber is provided in the cleaning water intake chamber, and the entire nozzle faces the height range of the cleaning water residual portion. It is provided at a position.

  The nozzle is preferably provided sideways. The cleaning water intake chamber and the chemical solution storage section are both formed in a substantially triangular shape, the cleaning water intake chamber is located at a substantially right corner on the lower left side when viewed from the front, and the chemical solution storage section is viewed from the front. It is preferable that it is disposed in the main body case so that a substantially right corner is located on the upper right side when viewed.

  According to the present invention, in the cleaning water intake chamber, since the chemical liquid in the chemical liquid storage unit is supplied by the nozzle, the high-concentration residual liquid is accumulated in the cleaning water residual portion. When the washing water passes through the washing water passage portion connected to the washing water supply path and flows into the washing water intake chamber, the high concentration residual liquid in the washing water remaining portion is mixed with the washing water flowing into the washing water intake chamber While compressing the gas in the washing water intake chamber. When the pressure in the washing water passage portion decreases, the washing water mixed with the chemical liquid is pushed out to the washing water passage portion by the expansion of the gas in the washing water intake chamber. However, a part of the washing water remains in the washing water remaining portion. Since the nozzle is positioned within the height range of the cleaning water residual portion, the nozzle infiltrates the low-concentration cleaning water in the cleaning water residual portion even if the chemical liquid in the chemical liquid storage portion becomes empty. Therefore, it is possible to prevent the inside of the nozzle from being dried and clogged. Moreover, it becomes easy to arrange | position the whole nozzle in the height range of a washing water residual part by arrange | positioning a nozzle sideways.

FIG. 1 is a front view showing a schematic configuration of a flush toilet bowl chemical supply device according to an embodiment of the present invention, including a partial cross-section. 2A is a cross-sectional view taken along line IIA-IIA in FIG. 1, and FIG. 2B is a cross-sectional view taken along line IIB-IIB in FIG. FIG. 3 is an enlarged cross-sectional view of another embodiment corresponding to part III in FIG. FIG. 4 is an enlarged cross-sectional view of another embodiment corresponding to the IV part in FIG. FIG. 5 is a front view of a main body case housing a flush toilet bowl chemical supply device according to an embodiment of the present invention.

  Hereinafter, the present invention will be described based on embodiments shown in the drawings. FIG. 1 shows the schematic configuration of a flush toilet chemical supply device 10 according to an embodiment of the present invention. As shown in FIG. 1, the flush toilet toilet bowl chemical supply apparatus 10 includes a flush water passage section 20, a flush water intake chamber 30, and a liquid chemical supply mechanism 40.

  The cleaning water passage 20 is a conduit that is connected in the middle of the cleaning water supply path and through which the cleaning water taken in from the cleaning water supply path passes. In the present embodiment, the upper pipe member 22 having the cleaning water outflow inlet 21, the lower pipe member 23 screwed to the lower end portion of the upper pipe member 22, and the lower pipe member 23 so as to communicate with the lower pipe member 23. The washing water passage pipe 24 is connected to the peripheral wall. The washing water passage pipe 24 is connected to the washing water supply path.

  Note that the cleaning water supply path in the present embodiment is a path through which the cleaning water passes to a discharge port (not shown) provided for discharging the cleaning water into the flush toilet. That is, a wash water supply pipe (not shown) for supplying wash water, and a toilet pipe (not shown) communicating from the wash water supply pipe to the discharge port provided in the flush toilet. . The toilet pipe is disposed within the thickness range of the upper wall and the side wall of the flush toilet (particularly the urinal).

  In this embodiment, as shown in FIG. 1, the cleaning water intake chamber 30 is a cleaning water intake tank having a substantially triangular shape in which the lower left corner is substantially right-angled when viewed from the front. The upper pipe member 22 is attached to the bottom of the washing water intake tank 30. At this time, the upper flush water inlet / outlet 21 of the upper pipe member 22 is disposed at a position higher than the bottom surface of the flush water intake tank 30. As a result, when the cleaning water in the cleaning water intake tank 30 flows out, a cleaning water residual portion 31 is formed in the cleaning water intake tank 30 that causes a part of the cleaning water to remain up to the height of the cleaning water outflow inlet 21. The washing water outflow inlet 21 is provided, for example, so that two through holes penetrating to the outer periphery in the lateral direction cross over the upper pipe member 22.

  Further, the washing water intake tank 30 forms a sealed space where the portion excluding the washing water outflow inlet 21 is substantially sealed, and the washing water flows into the sealed space from the washing water outflow inlet 21. To do.

  In this embodiment, as shown in FIG. 1, the chemical solution supply mechanism 40 has a chemical solution tank 41 which is a triangular chemical solution storage portion whose upper right corner is substantially a right angle when viewed from the front, and a lower end portion of the chemical solution tank 41. And a nozzle 42 provided in the nozzle. As shown in FIGS. 1 and 4, the nozzle 42 faces the cleaning water residual portion 31 in the cleaning water intake tank 30, and supplies the chemical solution in the chemical liquid tank 41 to the cleaning water residual portion 31 by a predetermined amount. Is possible. Therefore, when a predetermined amount of the chemical solution in the chemical solution tank 41 is supplied from the nozzle 42 to the cleaning water remaining in the cleaning water remaining portion 31, the cleaning water in the cleaning water remaining portion 31 becomes a high-concentration residual liquid. Become.

  As shown in FIG. 1 and FIG. 2B, the chemical liquid tank 41 is provided with a chemical liquid inlet 43 for injecting the chemical liquid into the chemical liquid tank 41 at the upper part of the chemical liquid tank 41.

  The preferred range of the nozzle 42 varies depending on the capacity of the chemical liquid tank 41, the viscosity of the chemical liquid, the length of the nozzle itself, and the like, but a thin cylindrical member (needle) made of metal or synthetic resin having an inner diameter of 50 μm to 0.5 mm. ) Is used.

  Considering the amount of chemical spillage, generally, public facilities and office buildings rarely use flush toilets at night, and even during the day, the flushing water flows for several tens of seconds. Since it is several to a dozen times per hour, the effect can be substantially ignored if considered in units of one day. That is, the outflow amount of the chemical liquid flowing out from the nozzle 42 per day may be obtained in consideration of the inner diameter of the nozzle 42, the viscosity of the chemical liquid, and the like without considering the time during which the cleaning water flows, which is a fluctuation factor. The consumption amount (consumption time) of the chemical solution filled in the chemical solution tank 41 is almost stable regardless of the frequency of use of the flush toilet. For this reason, the maintenance interval for exchanging the chemical tank 41 or supplementing the chemical can be stabilized.

  As shown in FIG. 1, the cleaning water intake tank 30 and the chemical liquid tank 41 are provided with a communication pipe convex portion 51 on the right side of the drawing in the vicinity of the upper portion of the cleaning water intake tank 30. A communication tube recess 52 into which the communication tube protrusion 51 can be inserted is provided. Further, a nozzle placement convex portion 53 is provided near the lower portion of the chemical liquid tank 41 in the left lateral direction in the drawing, and a nozzle placement concave portion 54 into which the nozzle placement convex portion 53 can be inserted is provided near the lower portion of the cleaning water intake tank 30. Provided. The wash water intake tank 30 and the chemical solution tank 41 are arranged so that the communication pipe convex portion 51 is inserted into the communication pipe concave portion 52 near the upper portion thereof, and the nozzle arrangement convex portion 53 is replaced with the nozzle arrangement concave portion 54 near the lower portion thereof. It is connected as if it were inserted. The nozzle 42 is arranged in a nozzle arrangement convex portion 53 in the lower part of the chemical liquid tank 41. In addition, a sealing member 42a for sealing the inside of the nozzle placement convex portion 53 in a liquid-tight manner is loaded in the nozzle placement convex portion 53. The nozzle 42 penetrates the sealing member 42a in the axial direction. Is provided.

  Further, the washing water intake tank 30 and the chemical liquid tank 41 may be connected in another manner as shown in FIGS. That is, in FIG. 3, they are connected to each other by the L-shaped communication pipe 55 in the vicinity of the upper part, and in FIG. 4, they are connected to each other by the L-shaped nozzle arrangement pipe 56 in the vicinity of the lower part. Also in this case, the cleaning water intake tank 30 and the chemical liquid tank 41 are moved in the lateral direction to communicate with each other through the communication pipe 55 in the vicinity of the upper portion thereof. The sealing member 42a is disposed in the nozzle arrangement tube 56 disposed near the lower portion, and the nozzle 42 is supported through in the axial direction of the sealing member 42a as described above.

  The nozzle 42 provided in the lower part of the chemical solution supply mechanism 40 is positioned within the height range of the cleaning water remaining portion 31 of the cleaning water intake tank 30. In the present embodiment, since the direction in which the chemical solution is supplied from the nozzle 42 is horizontal, the entire nozzle 42 is easily disposed within the height range of the cleaning water remaining portion 31. As a result, even if the chemical liquid in the chemical liquid tank 41 is emptied, the entire nozzle 42 is infiltrated by the cleaning water in the cleaning water remaining portion 31.

  Further, the washing water intake tank 30 and the chemical solution tank 41 are communicated with each other by a communication pipe convex portion 51 or a communication pipe 55 in the vicinity of the upper portion thereof. As a result, even if the cleaning water flows in and the cleaning water intake tank 30 becomes high pressure, the cleaning water intake tank 30 and the chemical liquid tank 41 are in communication with each other. The internal pressure of becomes equal. As a result, the cleaning water in the cleaning water intake tank 30 is prevented from flowing back into the chemical liquid tank 41 through the nozzle 42.

  As described above, the washing water intake tank 30 and the chemical solution tank 41 can be connected to each other in a substantially quadrangular shape when viewed from the front as shown in FIG. As shown in FIG. 5A and FIG. 5, it has a shape that can be accommodated in a substantially rectangular main body case 60.

  That is, the main body case 60 includes a plate-like base member 61 located at the rear and a box-like lid member 62 having one surface opened. The lid member 62 is fixed to the base member 61 using, for example, an engagement structure of an engagement groove and an engagement claw, a fastener such as a bolt, or the like. The washing water intake tank 30 and the chemical liquid tank 41 are fixed between the base member 61 and the lid member 62.

  An opening 63 is provided in the upper part of the front wall of the lid member 62, and an inner lid member 64 having a number of long holes is fitted into the opening 63. Further, the outer lid member 65 is mounted so as to cover the front surface of the inner lid member 64. The outer lid member 65 has a number of slits 65a as shown in FIG.

  The outer lid member 65 and the inner lid member 64 are configured such that the mounting screw 66 is inserted from the outside into a mounting hole 65b provided at substantially the center of the outer lid member 65 and a long hole of the inner lid member 64, and the base member By being screwed into a screw hole 61 a provided in 61, it is attached to the lid member 62 and fixed to the base member 61.

Next, the operation of the flush toilet chemical supply device 10 according to the present embodiment will be described.
First, when the cleaning water is supplied to the cleaning water supply pipe, it is supplied into the flush toilet through the cleaning water supply pipe. At this time, part of the washing water flowing through the washing water supply pipe flows into the washing water intake tank 30 from the washing water passage pipe 24 through the lower pipe member 23, the upper pipe member 22, and the washing water outflow inlet 21. In the cleaning water intake tank 30, the high-concentration residual liquid has already accumulated in the cleaning water residual portion 31 below the position of the cleaning water outflow inlet 21. Therefore, when the high-concentration residual liquid is dissolved and mixed in the cleaning water that has flowed into the cleaning water intake tank 30, the cleaning water intake tank 30 becomes low-concentration cleaning water mixed with a chemical solution.

  Further, as the flush water flows into the wash water intake tank 30, the internal pressure of the wash water intake tank 30 increases as the surface level of the low-concentration wash water in the wash water intake tank 30 increases. In the present embodiment, since the cleaning water intake tank 30 and the chemical liquid tank 41 are communicated with each other by the communication pipe convex portion 51 or the communication pipe 55 at the upper part, the internal pressure of the chemical liquid tank 41 also increases, and the internal pressure and chemical liquid of the cleaning water intake tank 30 increase. The internal pressure of the tank 41 becomes equal. This prevents low-concentration washing water from the washing water intake tank 30 from flowing back into the chemical tank 41 through the nozzle 42.

  When the supply of the cleaning water is near the end, the internal pressure of the cleaning water supply pipe and the cleaning water passage portion 20 decreases, so that the gas compressed in the cleaning water intake tank 30 expands (restores), and the cleaning water intake The low concentration washing water mixed with the chemical solution in the tank 30 is pushed out to the washing water passage 20. That is, the low-concentration washing water in the washing water intake tank 30 is supplied from the washing water outflow inlet 21 into the flush toilet through the upper pipe member 22, the lower pipe member 23, the washing water passage pipe 24, the toilet pipe and the discharge port. Is done.

  Not all of the low-concentration washing water in the washing water intake tank 30 is pushed out to the washing water passage part 20, but a part thereof remains in the washing water remaining part 31 below the position of the washing water outflow inlet 21.

  In other words, in the state where the washing water is not flowing, the inside of the washing water intake tank 30 becomes almost empty, and the low concentration washing water remains in the washing water remaining portion 31. At this time, there is a difference in height between the level of the chemical in the chemical tank 41 and the level of the residual low-concentration cleaning water in the cleaning water intake tank 30, so that the chemical in the chemical tank 41 causes the lower nozzle 42 to move. Then, a predetermined amount is supplied to the low-concentration cleaning water in the cleaning water remaining portion 31 of the cleaning water intake tank 30. As a result, the high-concentration residual liquid is accumulated in the cleaning water residual portion 31 of the cleaning water intake tank 30.

  When the flush toilet is used continuously, the above-described operation is repeated, and the wash water newly flowing into the wash water intake tank 30 is mixed with the high-concentration residual liquid. Low-concentration washing water having a stable chemical concentration can be supplied.

  Since the entire nozzle 42 in the chemical liquid tank 41 is located below the surface of the low-concentration cleaning water remaining in the cleaning water remaining portion 31 of the cleaning water intake tank 30, the chemical liquid in the chemical liquid tank 41 is empty. Even if it becomes, the said nozzle 42 will be in the state infiltrated in a low concentration wash water. Therefore, it is possible to prevent a situation in which the inside of the nozzle 42 is dried and the nozzle 42 is clogged due to the viscosity of the chemical solution.

DESCRIPTION OF SYMBOLS 10 Chemical supply device 20 for flush toilets Washing water passage part 21 Washing water outflow inlet 22 Upper pipe member 23 Lower pipe member 24 Washing water passage pipe 30 Washing water intake tank (washing water intake chamber)
31 Washing water residual part 40 Chemical liquid supply mechanism 41 Chemical liquid tank (chemical liquid storage part)
42 Nozzle 43 Chemical liquid inlet 51 Convex pipe convex part 52 Convex pipe concave part 53 Nozzle arrangement convex part 54 Nozzle arrangement concave part 55 Communication pipe 56 Nozzle arrangement pipe

Claims (3)

A chemical supply device for a flush toilet that supplies chemical to wash water supplied to a flush toilet,
A wash water passage section connected to a wash water supply path leading to a discharge port for discharging the wash water into each flush toilet;
A washing water intake chamber into which the washing water passing through the washing water passage section is taken in;
A chemical solution storage unit for storing a chemical solution whose upper part is connected to the vicinity of the upper part of the cleaning water intake chamber, and a nozzle attached to the chemical solution storage unit and capable of supplying a predetermined amount of the chemical solution to the cleaning water intake chamber A chemical solution supply mechanism provided,
Wash water passing through the wash water passage is taken into the wash water intake chamber, compresses the gas in the wash water intake chamber, and is mixed with the chemical solution,
When the pressure of the washing water passage part decreases, the washing water mixed with the chemical solution is pushed out to the washing water passage part by the expansion of the gas in the washing water intake chamber,
When the cleaning water mixed with the chemical solution is pushed out of the cleaning water intake chamber, a cleaning water residual portion is provided in the cleaning water intake chamber so that a part of the cleaning water remains.
A chemical supply device for a flush toilet, wherein the entire nozzle is provided at a position facing the height range of the washing water residual portion.   The chemical supply device for a flush toilet according to claim 1, wherein the nozzle is provided sideways.   The cleaning water intake chamber and the chemical solution storage section are both formed in a substantially triangular shape, the cleaning water intake chamber is located at a substantially right corner on the lower left side when viewed from the front, and the chemical solution storage section is viewed from the front. The liquid medicine supply apparatus for a flush toilet according to claim 1 or 2, wherein the chemical liquid supply apparatus is disposed in the main body case so that a substantially right-angled corner is positioned on the upper right side when viewed.

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