JPH0688035B2 - Drain pipe scale prevention method and solid drug dissolver used therefor - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for preventing the scale of a drainage pipe and a solid medicine dissolver used therefor, and more specifically, a solid medicine containing a sublimable substance and a water-soluble substance. Is stored in a specific solid drug dissolver and installed intermittently at the entrance of the drain pipe with running water to efficiently dissolve the water-soluble active ingredient in the solid drug into the running water and scale it to the drain pipe. TECHNICAL FIELD The present invention relates to a method for preventing sticking of particles and a solid drug dissolver used for the method.

INDUSTRIAL APPLICABILITY The present invention is suitably adopted as a method for preventing scale from sticking to a drain pipe of a water supply / drainage system in which there is intermittent running water such as various flush toilets, kitchens, and bathrooms, and a solid medicine dissolver used therefor.

[Prior Art] The present inventors have proposed a solid scale inhibitor comprising a sublimable substance and a water-soluble scale-preventing active ingredient (Japanese Patent Laid-Open No. Sho 61-61).
No. 021200), it is put to practical use as a scale preventive agent for men's urinals to be used by directly inserting it into a toilet bowl.

It also consists of a urinal solid scale inhibitor and a plastic container in the shape of a urinal drain pipe inlet (hereinafter referred to as "sana") that stores the urinal solid scale inhibitor and is installed at the urinal drain pipe inlet. Various solid scale inhibitor dissolvers are commercially available.

[Problems to be Solved by the Invention]

The solid scale inhibitor proposed in the above-mentioned JP-A No. 61-021200 sublimes the sublimable substance when left in the air, forms a layer of the water-soluble active ingredient on the surface, and contacts the running water with the water-soluble The component layer dissolves in running water and the surface is covered with a sublimable substance layer, the dissolution does not proceed any further, and when it is left in the atmosphere again, a water-soluble active substance layer is formed on the surface. It is a solid drug suitable for dissolving appropriate amounts of components in running water. For example, when used by directly inserting into a urinal, sublimation and dissolution with urine and washing water will not occur and the shape will not collapse, and an appropriate amount of the active ingredient will be dissolved in the wastewater for a long time. You can

However, when the solid scale inhibitor is accidentally dropped into the drain pipe and submerged in water when cleaning the toilet bowl, the dissolution does not proceed and causes the drain pipe to be clogged. In addition, the shape of the toilet does not collapse, but the presence of foreign matter in the toilet bowl makes the toilet user feel uncomfortable. As a means for solving these problems, it is conceivable to store the solid scale inhibitor in a suitable container and install it in the urinal.

On the other hand, in the commercially available sana type container, when the solid scale inhibitor is stored and used at the entrance of the toilet drain pipe, it does not fall into the drain pipe and the user does not feel uncomfortable, but the air The distribution is poor, and the sublimation property of the solid scale inhibitor is suppressed, and the dissolution of the water-soluble active ingredient is too slow to obtain a sufficient scale prevention effect.

The present invention provides a method for preventing scale scale of a drainage pipe, which comprises contacting a solid drug comprising a sublimable substance and a water-soluble substance with running water to dissolve an appropriate amount of a water-soluble active ingredient in the running water, and a solid drug dissolver used therefor. That is the purpose.

[Means for Solving the Problems]

The present inventors have conducted extensive studies to achieve the above-mentioned object, and as a result, a solid medicine consisting of the sublimable substance and a water-soluble substance is stored in a specific solid medicine dissolver, and a drain pipe with intermittent running water is provided. When installed at the entrance, there is a correlation with the area of the opening of the solid drug dissolver, and the inner protrusion 4 is inside the tapered portion 2b and the bottom 2c of the main body 2, and the outer protrusion is on the outer wall. By providing 5, the contact between the main body 2 and the solid medicine A can be made smooth, and when the quantity of flowing water is large, a quantity of flowing water other than the amount necessary for dissolving the solid medicine A can be smoothly introduced into the drain pipe. The inventors have found out what can be done and have completed the present invention.

The present invention is composed of an upper lid 1 and a main body 2, and the area of the opening 3 provided in the upper lid and the main body is 25% or more of the total surface area of the upper portion of the upper lid main body and the storage portion of the solid medicine A of the main body. A method of preventing scale of a drain pipe and a solid drug dissolver used therefor, characterized in that a solid drug consisting of a sublimable substance and a water-soluble substance is housed in a drug dissolver and intermittently installed at a drain pipe inlet with flowing water. Is.

In addition, the solid medicine device has a tapered portion 2b of the main body with an internal projection 4 and / or an external projection 5 and an installation tool 6 at the bottom of the main body, and a scale prevention method for a drainage pipe, and a solid used therefor. It is a drug dissolver.

The present invention will be described in detail with reference to the accompanying drawings (Figs. 1 and 2) showing one embodiment of the solid drug dissolver used in the present invention.

As shown in the attached FIGS. 1 and 2, the solid medicine dissolver has a structure that can be divided into an upper lid 1 and a main body 2,
The solid medicine A is stored in the main body 2. An opening 3 is provided in the upper lid 1 and the main body 2, and the upper lid 1 is composed of an upper portion 1a of the main body (hereinafter referred to as a "lid portion") and an eaves portion 1b protruding from the outer diameter of the main body 2, and an opening is formed in the lid portion 1a. Parts 3a and 3b are provided.

The main body 2 comprises a main body side body portion 2a for accommodating a solid drug, a main body taper portion 2b and a main body bottom portion 2c, and an opening portion for each portion.
3c, 3d, 3e are provided.

In the solid medicine dissolver, the total area of the openings 3 is 25 of the total surface area of the lid portion 1a of the upper lid 1 and the portions (2a, 2b and 2c portions) of the main body 2 in which the solid medicine A is stored. %
Or more, preferably 50% or more.

The upper lid 1 is not limited in its shape as long as it does not prevent the inflow of water into the drain pipe and can prevent the inflow of solid matter. For example, in addition to the shape shown in the drawings, a flat disk, a conical shape, an inverted conical shape, a semicircular plate, a square plate, a triangular plate, or the like can be used. However, in a solid medicine dissolver installed in a place where high-speed running water such as urine or tap water directly comes into contact, it is desirable that the solid drug dissolver has a shape capable of preventing scattering of running water, such as a spherical surface or a conical shape. Further, it is desirable that the dissolver to be installed in a urinal, a kitchen or the like has a shape that does not give an uncomfortable feeling, for example, a shape similar to a sana or a shape similar to a drain faucet. There is no limitation on the planar shape of the openings 3a and 3b of the upper lid 1, and various arbitrary planar shapes other than the shapes illustrated in the drawings,
For example, it can be a circle, a rectangle, a triangle, a star, a mesh, a slit, or the like. Further, the cross-sectional shape of the openings 3a and 3b is not limited and can be any shape other than the shape shown in the drawings. Eaves 1b of the top cover 1 shown in the drawings
May not be provided or may be larger. Furthermore, the eaves portion 1b has a structure, such as a flexible plastic slit or mesh, which does not prevent running water from flowing into the drain pipe, and can be closely attached to the periphery of the drain pipe inlet, thereby making it possible to prevent foreign matter from entering the drain pipe. Can be prevented and the solid drug dissolver can be stabilized at the installation site.

The shape of the main body 2 is not limited as long as it is a structure that allows the stored solid medicine to come into contact with running water, and various arbitrary shapes other than those illustrated in the drawings, for example, a cylinder, a square pillar, a triangular pillar,
It can be a hemisphere, an inverted cone, or the like.

The shape of the openings 3c, 3d, 3e of the main body 2 is not limited, and can be any arbitrary shape other than the shape shown in the drawing, for example, circular, triangular, star-shaped, mesh, slit, etc. It should have openings that prevent the water from falling into the drainage pipe and do not hinder the flow of running water. Specifically, it is desirable that the opening be 3 mm or more and 10 mm or less.

Further, an inner projection 4 is preferably provided on the inner wall of the tapered portion 2b and the bottom 2c of the main body 2, and an outer projection 5 is preferably provided on the outer wall. The internal projection 4 has a function of forming a gap between the main body 2 and the solid medicine A to smoothly bring the solid medicine A into contact with running water, and the external projection 5 forms a gap between the drain pipe inlet and the main body 2. When a large amount of flowing water is formed between them, it has a function of smoothly guiding the flowing water other than the amount necessary for dissolving the solid medicine A into the drain pipe.

The internal protrusion 4 forms a space between the inner wall of the main body 2 and the solid medicine A, and has an arbitrary shape such that flowing water can smoothly flow through the space, for example, a cylinder, a semi-cylinder, a triangular prism, a hemisphere, etc. are shown in the drawings. Other shapes may be used. The internal protrusions 4 are usually provided at three or more places. In a solid medicine dissolver having a main body shape as shown in the drawing or a main body shape such that the flow channel becomes narrower toward the bottom, as shown in FIG. By making the height higher than the object height, the running water and the solid medicine A can be smoothly brought into contact with each other.

The external projection 5 forms a stable gap between the outer wall of the main body 2 and the inlet of the drainage pipe B or its peripheral portion, and has any shape as long as it allows smooth passage of flowing water, for example, a column, a triangular prism, or four. It can be a prism, a hemisphere, or the like.

The inner protrusion 4 and the outer protrusion 5 are provided as structures on the wall surface of the main body 2 as shown in the drawing, or formed by projecting a part of the wall surface of the main body 2 inward and outward. In the internal projection 4 or the external projection 5 in which a part of the wall surface of the main body 2 is projected, the opening 3 may be provided in them as well.

The heights of the inner protrusions 4 and the outer protrusions 5 differ depending on the amount of flowing water and the amount of necessary active ingredient dissolved in the flowing water. In the solid drug dissolver installed in a place with a large amount of running water,
The height of the inner and outer protrusions 4 and 5 is high, and the structure is such that running water can be smoothly flowed.However, in the solid chemical dissolver installed in a place where the amount of water flowing is small, the height of each protrusion is low and the running water is solid. A structure that makes sufficient contact with the drug A is adopted. In the solid medicine dissolver to be installed in a place where the amount of flowing water is small and the high-concentration active ingredient needs to be dissolved, the external protrusion 5 may be omitted, and the external protrusion 5 may be omitted.
It is also possible to have a structure without both of the internal protrusions 4.

In order to stably install the solid medicine dissolver at the inlet of the drain pipe, an installation tool 6 is provided at the bottom of the main body 2 as shown in the drawing,
Install it by inserting it into the drainage pipe.

The solid medicine dissolver shown in the drawing is intended to be installed at the inlet of the drain pipe B, and therefore the installation tool 6 of a system that can be inserted into the drain pipe 6
However, the installation tool 6 has an arbitrary shape according to the installation location,
For example, three or more rod-shaped legs, a rubber suction plate, or the like may be adopted.

In particular, since the insertion type installation tool 6 shown in the drawing is inserted into the drainage pipe B, the solid medicine dissolver can be stably installed at the inlet of the drainage pipe B and has a structure that does not impede the flow of drainage. There is no limit to the shape. For example, a cylinder, a cone, an inverted cone, a quadrangular cylinder, a triangular cylinder, and a shape in which a large number of holes are formed therein, a shape in which a rod orthogonal to the tip of a rod-shaped object is attached, a shape in which plates are orthogonalized, and the like can be used.

In the present invention, the solid medicine dissolver has a structure at the lower part of the main body side body portion 2a, for example, a structure such as a flexible plastic mesh or slit that does not prevent the flowing of running water into the drain pipe, and It is possible to provide a brim that can be brought into close contact with the peripheral portion. Similar to the eaves portion 1b of the upper lid 1 having the same structure as described above, this collar has the function of preventing foreign matter from flowing into the drain pipe and stabilizing the solid medicine dissolver at the installation location.

In the present invention, the size of the solid medicine dissolver varies depending on the installation location, purpose of use, etc., but it must be such a size that it does not cause discomfort at the installation location and does not fall into the drain pipe.

The solid drug dissolver can be molded and manufactured by various known materials such as various plastics, stainless steel, gun metal, and ceramics.

Further, this solid medicine dissolver may have a structure that can be finely divided into two or more divided structures.

In the present invention, the solid medicine contained in the solid medicine dissolver is a solid medicine composed of a sublimable substance and a water-soluble substance. In this solid drug, the sublimable substance is a known substance that can be sublimated and reduced at room temperature, for example, paradichlorobenzene, naphthalene, etc., and the water-soluble substance is a known substance that is soluble in water and solid at room temperature. Is. Various water-soluble active ingredients are mixed with a sublimable substance alone or together with other water-soluble substances, and then molded.

The shape of the solid drug is arbitrary as long as it can be stored in the solid drug dissolver, but is preferably spherical, flat spherical, disc-shaped or the like.

In the present invention, the solid medicine dissolver accommodates the solid medicine, a urinal, a bathhouse, a drainage pipe entrance of a kitchen or the like, a low tank hand wash part of a domestic flush toilet, a flush toilet flush water flow channel,
To be used by installing it in a place where it comes in contact with running water intermittently, such as in a faucet drop part, and in a place where it is in contact with running water and the atmosphere at the same time, such as a high tank injection port of a flush toy.

[Work]

In the present invention, the solid medicine dissolver described in detail above contains a solid medicine composed of a sublimable substance and a water-soluble substance, and is installed intermittently in a place where running water is present, for example, in a men's toilet or the like instead of NASA. As a result, the sublimation rate of the sublimable substance in the solid drug is stabilized, and the water-soluble substance is dissolved in running water at a stable rate for a long period of time.

When a solid chemical consisting of a uniform mixture of a sublimable substance and a water-soluble substance is contacted with the atmosphere, the sublimable substance sublimes to form a water-soluble substance layer on the surface, and when the water-soluble substance layer becomes thick, sublimation is suppressed. The formed water-soluble substance layer is dissolved and removed by contacting with running water, and the surface of the solid drug is covered with the sublimable substance layer to suppress dissolution. Sublimation of sublimable substances,
The water-soluble substance layer formed uniformly from the surface of the solid drug and formed by sublimation of the sublimable substance is porous and easily dissolves even with a small amount of water. Further, even if water does not uniformly contact the solid drug, the solid drug is dissolved without breaking its shape. Further, when there is no contact with running water for a long period of time, sublimation is suppressed, and when it contacts with a large amount of running water, dissolution is suppressed, so that the active ingredient is stably dissolved in running water for a long period of time.

In urinals, kitchens, bathhouses, etc., drainage pipes are clogged when a small amount of wastewater contains high-concentration pollutants, and in the case of wastewater containing large amounts of low-concentration pollutants, drainage pipes are blocked. Is hard to get up. A solid drug consisting of a sublimable substance and a water-soluble substance has excellent properties as an application for intermittently dissolving the water-soluble substance in running water, especially as a clogging preventive agent for drain pipes such as urinals, kitchens, and baths. ing.

When a solid medicine consisting of a sublimable substance and a water-soluble substance is stored in a solid medicine dissolver having an opening area of less than 25% of the surface area of the main body 2 and the lid portion 1a, sublimation of the sublimable substance is suppressed and flowing water is flown. When contacted with, the water-soluble active ingredient dissolves only in a very small amount, and it becomes difficult to dissolve the necessary amount of the active ingredient in running water.

In the present invention, by making the opening area of the solid medicine dissolver 25% or more of the surface area of the main body 2 and the lid 1a,
The vapor of the sublimable substance can be sufficiently diffused, and the active ingredient of the solid drug consisting of the sublimable substance and the water-soluble substance can be effectively dissolved in running water.

The dissolution rate of solid drug depends on the opening area,
In the summer when the temperature is high and the sublimation rate and dissolution rate of the solid drug are high, the dissolution is suppressed by reducing the sublimation of the sublimable substance by reducing the opening area within the range of 25% or more,
In winter, when the temperature is low and the sublimation rate and dissolution rate of the solid drug are slow, increase the opening area of the solid drug dissolver,
Sublimation and dissolution can be promoted, and a uniform drug dissolution amount can be obtained throughout the year. Further, in the drug dissolver of the present invention, the taper portion 2b and the bottom portion 2c of the main body 2 are provided with the inner protrusion 4 on the inner wall and the outer protrusion 5 on the outer wall.
The internal protrusion 4 has a function of forming a gap between the main body 2 and the solid medicine A to smoothly bring the solid medicine A into contact with running water, and the external protrusion 5 forms a gap between the drain pipe inlet and the main body 2. When a large amount of running water is formed between them, it functions to smoothly introduce running water other than the amount necessary for dissolving the solid medicine A into the drain pipe. And, by such a combination of functions, when contact with running water for a long period of time, dissolution is suppressed, and when contacting with a large amount of running water, sublimation is suppressed. Dissolves in.

〔Example〕

 The present invention will be described in more detail by way of examples.

However, the scope of the present invention is not limited to the following examples.

(1) Solid drug dissolving device (A-1), (A-2), (C-1) and (C-2) As a solid drug dissolving container, it has the structure shown in attached FIG. 1 and FIG. , The total area of the upper lid 1 and the opening 3 of the main body 2 is
Solid drug dissolver (A-1) and 30% of the total surface area of the upper body part of the upper lid 1 and the solid drug storage part of the body 2
(A-2), and the top lid 1 and the main body 2 for comparison.
The total area of the openings 3 of the solid drug dissolver (C-1) is 10% of the total surface area of the upper part of the main body of the upper lid 1 and the solid drug storage part of the main body 2, and 12% is the commercially available solid product. A drug dissolver (C-2) was prepared.

(2) Dissolution test of solid drug Paradichlorobenzene powder 50% and sulfamic acid powder 50
% (Weight basis) pressure-molded mixed product, diameter 45 mm, weight
60 g of the disk-shaped solid drug is added to the solid drug dissolver (A-1),
They were stored in (A-2), (C-1) and (C-2), and the drain pipes of the wall-mounted stall type urinals were cleaned with hydrochloric acid containing a corrosion inhibitor, and then installed at the drain pipe inlet. The urinal was used as usual while performing automatic cleaning once every 30 minutes with 4 times of cleaning water.

After 30 days, the dissolved amount of the solid drug was measured and the dirt at the drain pipe inlet was observed.

The test results are shown in Table 1 along with the results for the blanks without solid drug.

In Table 1, for the soiling of the toilet bowl, the state of the drain pipe inlet after 30 days from the installation of the solid medicine was indicated in the following three stages.

◯: No stain Δ: Slight stain X: Stain The dissolution rate of the solid drug was calculated by the following formula.

[Effects of the Invention] As shown in Table 1 above, a solid drug dissolver having a sufficiently large opening in the upper lid and the main body is provided with paradichlorobenzene which is a sublimable substance and sulfamine which is a water-soluble substance. Sulfamic acid is effectively dissolved in urine or wash water for a long period of time to prevent the urinal drain from becoming dirty by storing the solid chemical consisting of acid and installing it at the entrance of the toilet drain. On the other hand, when the solid drug dissolver of the comparative example having an insufficient opening area is used, the drug dissolution rate is slow, and as a result, the urinal drain pipe is contaminated.

In the examples, an example was shown in which a solid drug consisting of paradichlorobenzene and sulfamic acid was stored and installed at the entrance of the urinal drain pipe, but the solid drug dissolver contains other sublimable substances and water-soluble substances. Even when the solid medicine is stored and installed in a place where it comes into contact with running water intermittently, such as in a kitchen or a bath, it is possible to effectively dissolve the solid medicine for a long time and prevent the scale from sticking to the drain pipe. .

The present invention stores a solid drug consisting of a sublimable substance and a water-soluble substance in a solid drug dissolver, stably installs it at a place of use, and effectively dissolves the drug in running water for a long period of time to allow drainage. The present invention provides a method for preventing scale sticking to a pipe and a solid drug dissolver used for the method, and its industrial and public health significance is extremely great.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing one embodiment of a solid medicine dissolver used in the present invention. FIG. 2: Perspective view of FIG. (Usage code) 1: Top lid, 1a: Lid portion 1b: Eaves portion, 2: Main body 2a: Side trunk portion, 2b: Tapered portion 2c: Bottom portion, 3: Openings 3a, 3b: Top lid openings 3c, 3d, 3e : Main body opening 4: Internal projection, 5: External projection 6: Installation tool A: Solid chemical, B: Drain pipe

Claims (2)

[Claims] 1. An upper lid 1 and a main body 2, wherein an area of an opening 3 provided in the upper lid and the main body is 25% or more of the total surface area of the upper portion of the upper lid and the storage portion of the solid medicine A of the main body. The urinal drainage which has an internal protrusion 4 and / or an external protrusion 5 on the taper portion 2b of the main body, and which stores a solid medicine consisting of a sublimable substance and a water-soluble substance, and which has intermittent running water. A solid drug dissolver characterized by being installed at the entrance of a pipe. 2. The upper lid 1 and the main body 2 are formed, and the area of the opening 3 provided in the upper lid and the main body is 25% or more of the total surface area of the upper portion of the upper lid and the storage portion for the solid medicine A of the main body. A urinal in which a solid medicine consisting of a sublimable substance and a water-soluble substance is housed in a solid medicine dissolver having an internal protrusion 4 and / or an external protrusion 5 in a tapered portion 2b of the main body and which has intermittent running water. A method of preventing scale in a urinal drain pipe, which is characterized by being installed at the drain pipe inlet.