JPH02290300A - Method for preventing scale formation in drainpipe and solid chemicals therefor dissolving vessel - Google Patents

Abstract

PURPOSE:To improve an effect of preventing scale formation by storing solid chemicals made of sublimating material and water-soluble material in a solid chemicals dissolving vessel and arranging the vessel at an inlet of a drainpipe intermittently. CONSTITUTION:A dissolving vessel can be separated into a lid 1 and a main body 2, and solid chemicals A are stored in the main body 2. The main body 2 consists of a main body shell part 2a, a main body taper part 2, and a main body bottom part 2c, and openings 3c, 3d and 3e are arranged at respective parts. Inside and outside projections 4, 5 are arranged at inside and outside walls of the taper part 2b and bottom part 2c of the main body 2 respectively. The inside projections 4 form a clearance between the main body 2 and the solid chemicals A and perform an action of making a contact between the solid chemicals A and flowing water smooth. Water-soluble material in the solid chemicals is dissolved into the flowing water at a steady rate for a long time, therefore, it is possible to prevent adhesion of scale to a drainpipe by using this method.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for preventing scaling of drain pipes and a solid drug dissolver used therein.
A solid drug consisting of a solid drug and a water-soluble substance is stored in a specific solid drug dissolver and placed at the entrance of a drain pipe where water flows intermittently. The present invention relates to a method for preventing scale from sticking to a drain pipe by dissolving it in a solid drug, and a solid drug dissolver used therein.

INDUSTRIAL APPLICABILITY The present invention is suitably employed as a method for preventing scale from adhering to drain pipes of water supply and drainage systems that have intermittent running water, such as various flush toilets, kitchens, bathrooms, etc., and as a solid drug dissolver used therein.

[Conventional technology]

The present inventors proposed a solid scale preventive agent consisting of a sublimable substance and a water-soluble scale preventive active ingredient (Japanese Unexamined Patent Publication No. 6
(Refer to Publication No. 1-021200), it has been put to practical use as an anti-scaling agent for men's urinals, which is used by directly pouring it into the toilet bowl.

In addition, a solid scale preventive agent for urinals and a perforated plate at the entrance of the urinal drain pipe (hereinafter referred to as ``Sana J'') that houses the solid scale preventive agent for urinals and is installed at the entrance of the urinal drain pipe.
There are various types of solid scale inhibitor dissolvers available on the market, each consisting of a plastic container with a different shape.

[Problem to be solved by the invention]

In the solid scale inhibitor proposed in JP-A No. 61-021200, when left in the air, sublimable substances sublimate, forming a layer of water-soluble active ingredients on the surface, and when it comes into contact with running water, the water-soluble active ingredients disappear. Water-soluble active ingredients have the property that the ingredient layer dissolves in running water, the surface is covered with a sublimable substance layer, the dissolution does not proceed any further, and a water-soluble active ingredient layer is formed on the surface when left in the air again. It is a solid drug suitable for dissolving appropriate amounts of ingredients in running water. For example, when used directly in a urinal, sublimation and dissolution by urine and washing water occur alternately, so that the shape does not collapse and the appropriate amount of active ingredients are kept in the drain for a long period of time. can be made to understand.

However, if this solid anti-scaling agent accidentally falls into a drain pipe and is submerged in water during cleaning of a toilet bowl, etc., dissolution will not proceed and this will cause clogging of the drain pipe. In addition, although the toilet bowl does not lose its shape, the presence of foreign matter inside the toilet bowl makes the toilet user feel uncomfortable. As a means to solve these problems, it is conceivable to store the solid scale preventive agent in a suitable container and place it in the urinal.

On the other hand, if the solid scale preventive agent is stored in the commercially available container and installed at the entrance of the toilet drain pipe, it will not fall into the drain pipe and the user will not feel any discomfort, but the air Due to poor distribution, the sublimation of the solid scale inhibitor is suppressed, and the water-soluble active ingredient dissolves too slowly, making it impossible to obtain a sufficient scale prevention effect.

The present invention provides a method for preventing scaling of a drain pipe, in which a solid drug consisting of a sublimable substance and a water-soluble substance is brought into contact with flowing water, and a quantity of a water-soluble active ingredient is dissolved in the flowing water, and a solid drug dissolver used therein. Its purpose is to.

Means for Solving Problem C] As a result of intensive research to achieve the above object, the present inventors have developed a solid drug consisting of the above-mentioned sublimable substance and water-soluble substance,
When stored in a specific solid drug dissolver and installed at the entrance of a drain pipe with intermittent running water, there is a correlation between the sublimation rate and dissolution rate of the solid drug and the opening area of the solid drug dissolver. They discovered this and completed the present invention.

The present invention provides a solid drug comprising a top lid 1 and a main body 2, and the area of the opening 3 provided in the top lid and the main body is 25% or more of the total surface area of the upper part of the main body of the top lid and the storage part of the solid drug A in the main body. A method for preventing scaling of a drain pipe, and a solid drug dissolver used therein, characterized in that a solid drug consisting of a sublimable substance and a water-soluble substance is stored in a dissolver, and the dissolver is installed at the entrance of a drain pipe where water flows intermittently. be.

1. The solid medicine container has an internal protrusion 4 and/or an external protrusion 5 on the tapered portion 2b of the main body, and an installation tool 6 on the lower part of the main body. ! This is a method for preventing scale in drain pipes and a solid drug dissolver used therein.

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 attached FIG. IIA and FIG. 2, the solid medicine C container has a structure that can be divided into an upper MI and a main body 2, and the solid medicine A is collected in the wooden body 2. The upper lid l and the main body 2 are provided with an opening 3, and the upper MI is provided with an upper part 1 of the main body.
a (hereinafter referred to as "lid part") consists of an eaves part 1b that overhangs from the outer diameter of the wooden body 2, and the π part 1a has openings 3a, 3.
b is provided.

The main body 2 consists of a main body side body part 2a for storing a solid drug, a main body tapered part 2b, and a main body bottom part 2C, and openings 3c, 3d, and 3e are provided in each part. In the solid medicine dissolver, the total area of the opening 3 of the upper body 1 and the part (2a, 2b and 20 parts) of the main body 2 that accommodates the solid medicine 8 is calculated as shown in Table 11j 4+ 'f is at least 25% of the total, preferably at least 50%.

There is no restriction on the shape of the upper part 1 as long as it has a structure that does not obstruct the flow of water into the drain pipe and prevents the flow of solid matter. For example, in addition to the shape shown in the drawings, the shape may be a flat disk, a cone, an inverted cone, a semicircle, a square plate, a triangular plate, or the like. However, for solid drug dissolvers that are installed in locations that are directly exposed to high-speed flowing water such as urine or tap water,
It is desirable to have a shape that can prevent running water from scattering, such as a spherical or conical shape. Furthermore, for dissolvers installed in urinals, kitchens, etc., it is desirable that they have a shape that does not cause discomfort, such as a Sana R4Q shape or a shape similar to a drain faucet. Opening 3a of upper lid 1. The planar shape of 3b is also not limited, and can be any arbitrary planar shape other than the shapes exemplified in the drawings, such as a circle, square, triangle, star, menosaurus, or surinote. Further, there is no limit to the cross-sectional shape of the openings 3a and 3b, and they can have any shape other than the shape shown in the drawings. The eaves portion 1b of the upper Ml shown in FIG. G may not be particularly provided, or may be made larger. Furthermore, the eaves part ib is made of a flexible plastic material such as Surinoto or Messoe that does not prevent flowing water from flowing into the drain pipe, and has a structure that allows it to fit tightly around the entrance of the drain pipe. It is possible to prevent foreign matter from entering the solid drug dissolver and to stabilize the solid drug dissolver at the installation location.

The shape of the main body 2 is not limited as long as it has a structure that allows the stored solid drug to come into contact with flowing water, and may have any arbitrary shape other than those illustrated in the drawings, such as a cylinder, a square prism, a triangular prism,
It can be a hemisphere, an inverted cone, etc.

Opening 3c in wooden body 2. There are no restrictions on the shapes of 3d and 3e, and in addition to the shapes shown in the drawings, they can be of any shape, such as circular, triangular, star-shaped, mesh, slit, etc., to prevent solid drugs from falling into the drain pipe. It is sufficient that the openings are wide enough to prevent the flow of water. Specifically, it is desirable that the opening is 31 or more and 10 mm or less.

In addition, on the inner wall of the tapered part 2b and bottom part 2C of the main body 2,
An internal protrusion 4 and an external protrusion 5 are preferably provided on the outer wall. The internal protrusions 4 have the function of creating a gap between the wooden body 2 and the solid medicine A to allow smooth contact between the solid medicine A and running water.
It has the function of creating a gap between the drain pipe and the drain pipe to smoothly guide the water other than the amount required for dissolving the solid drug A into the drain pipe when the amount of water flowing is large.

The internal protrusion 4 forms a gap between the inner wall of the main body 2 and the solid drug A, and has an arbitrary shape that allows flowing water to flow smoothly through the gap, such as a cylinder, a semicircle, a square cylinder, a hemisphere, etc. It is also possible to have a shape other than that shown in the drawing. Internal protrusions 4 are usually provided at three or more locations. In the case of a solid chemical scraper having a body shape as shown in Figure 1 or a body shape such as a hemispherical shape in which the flow channel becomes narrower toward the bottom, the projections on the bottom 11j as shown in Figure 1 are By making the height higher than the height of the upper protrusion, smooth contact between the running water and the solid straw agent Δ can be achieved.

The external protrusion 5 is attached to the outer wall of the main body 2 F. It can be of any shape, such as a cylinder, triangular prism, square prism, hemisphere, etc., as long as it forms a stable gap with the water pipe B entrance or its surroundings and allows flowing water to pass through J smoothly.

The internal protrusion 4 and the external protrusion 5 are provided as structures on the wall surface of the main body 2 as shown in the drawings, or are formed by making a part of the wall surface of the main body 2 protrude inside and outside. An opening 3 may also be provided in the internal protrusion 4 or external protrusion 5 in which a part of the wooden body 2 wall protrudes.

The heights of the internal protrusions 4 and the external protrusions 5 vary depending on the amount of flowing water and the amount of active ingredient required to be dissolved in the flowing water. For solid chemical shavings dissolving machines installed in places with a large amount of water flowing,
In a solid drug dissolver installed in a place where there is little flowing water, the internal and external protrusions 45 have a high height to allow water to flow smoothly. A structure is adopted that allows sufficient contact with the For solid straw dissolving devices installed in locations where there is little running water and it is necessary to dissolve 4 degrees of active ingredients,
The external protrusion 5 may not be provided, or a structure may be provided in which both the external protrusion 5 and the internal protrusion 4 are not provided.

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

The solid drug dissolver shown in the drawing is intended to be installed at the entrance of drain pipe B, so an installation tool 6 that can be inserted into the drain pipe is used.
However, the installation tool 6 can have any shape depending on the installation location.
For example, three or more rod-like legs, a rubber suction cup, etc. may be used.

In particular, since the insertion type installation tool 6 shown in the drawing is inserted into the drain pipe B, it can be installed as long as the solid drug dissolver can be stably installed at the entrance of the fj1 water pipe 13 and has a structure that does not obstruct the flow of waste water. There are no restrictions on the shape.

For example, shapes such as cylinders, cones, inverted cones, square tubes, triangular tubes, and shapes with many holes in them, shapes with rods attached perpendicular to the ends of rods, shapes with plates orthogonal, etc. I can do it.

It must be large enough so that it does not create a sense of discomfort in the area and does not fall into the drain pipe.

Further, the solid drug dissolver can be molded and manufactured using various known materials, such as plastic, stainless steel, gun metal, and ceramics.

Furthermore, this solid drug dissolver has a subdivision δ of more than two-part structure.
It is also possible to have a structure that allows for

In the present invention, the solid straw agent 2g has a horizontal structure at the lower part of the main body 2a, such as a flexible plastic men/menni or surinote, which does not obstruct the flow of running water into the drain pipe. , and a collar that can be brought into close contact with the 14 sides of the drain pipe B entrance can be provided. This collar has the function of preventing foreign matter from flowing into the drain pipe and stabilizing the solid drug dissolver at the installation location, similar to the eaves part 1b of the upper float 1 having a similar structure as described above. .

In the present invention, the size of the solid drug dissolver varies depending on the installation location, purpose of use, etc. However, in the present invention, the solid drug stored in one solid drug dissolver is a sublimable substance and a water-soluble substance. It is a solid drug consisting of a substance. In this solid drug, sublimable substances are known substances that can sublimate and decrease at room temperature, such as balajichlorhenzene, naphthalene, etc., and water-soluble substances are substances that are soluble in water and solid at room temperature. It is a known substance. 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 may be arbitrary as long as it can be stored in the solid drug dissolver, but it is preferably spherical, oblate spherical, disc-shaped, or the like.

In the present invention, the solid drug dissolver accommodates a solid drug, and can be used at the entrance of a drain pipe in a urinal, a bathroom, a kitchen, etc., the low tank + flush section of a household flush toilet, flush 1 to flush water flow channels,
It is installed and used in places that come into contact with intermittent running water, such as the falling part of a washroom faucet, and in places that come into contact with running water and the atmosphere at the same time, such as the high tank water inlet of a flush toilet.

[Function] In the present invention, a solid drug consisting of a sublimable substance and a water-soluble substance is collected in the solid drug dissolver described in detail in 111T, and placed in a place where there is intermittent running water, such as a men's restroom. By installing the sublimation agent instead, the sublimation rate of the sublimable substance in the solid drug is stabilized, and the water-soluble substance is dissolved in flowing water at a stable rate for a long period of time.

When a solid drug consisting of a homogeneous mixture of a sublimable substance and a water-soluble substance comes into contact with the atmosphere, the sublimable substance sublimates and a water-soluble substance layer is formed on the surface, and when the water-soluble substance layer becomes I1, the sublimation stops lrll. be controlled. The formed water-soluble substance layer is dissolved and removed by contact with running water, and the surface of the solid drug is covered with the sublimable substance Il! It is covered with j and the i-acceptance is suppressed. The sublimation of the sublimable substance is performed uniformly as shown in Table 1hj of the solid drug, and the sublimable substance is sublimated into water (the sublimable substance layer is porous and easily dissolved in water in a small tank). In addition, even if the solid drug does not come into uniform contact with water, it will dissolve without losing its shape.Furthermore, if there is no contact with running water for a long period of time, stagnation will be suppressed, and the solid drug will not come in contact with running water. In this case, dissolution is suppressed, so that the active ingredient is stably dissolved in running water for a long period of time.

In urinals, kitchens, bathrooms, etc., drain pipes become clogged when a small amount of floating water contains highly concentrated pollutants. Hit 1
Clogged water pipes are unlikely to occur.

Solid medicines consisting of sublimable substances and water-soluble substances are used in applications where water-soluble substances are intermittently dissolved in running water, especially in urinals,
It has excellent properties as an anti-clog agent for drain pipes in kitchens, bathrooms, etc.

When a solid drug consisting of a sublimable substance and a water-soluble substance is stored in a solid 'Vff't i8 disintegrator whose opening area is less than 2594 of the surface area of the wooden body 2 and the lid part 1a, d
．． The sublimation of the competitive bamboo is suppressed, and even when it comes into contact with running water, the water-cooling active ingredient dissolves in only a small amount, making it difficult to dissolve the necessary amount of the active ingredient in the running water.

In the present invention, by setting the opening area of the solid drug dissolver to 25% or more of the surface area of the main body 2 and the π section 1a, the stems of the sublimable substance can be sufficiently spread, and the sublimation The active ingredient of a solid drug consisting of a water-cooling substance and a water-cooling substance can be effectively dissolved in running water.

The dissolution rate of solid drugs depends on this opening area,
In summer, when the temperature is high and the sublimation rate and dissolution rate of solid drugs are high, dissolution is suppressed by reducing the opening area within a range of 25% or more and suppressing the sublimation of 1-color substances. r. In winter, when L is low and the sublimation rate and dissolution rate of solid drugs are slow, the opening area of the solid drug dissolver can be increased to promote sublimation and dissolution, resulting in a uniform drug dissolution site throughout the year. is obtained.

〔Example〕

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

However, the scope of the present invention is not limited in any way by the following examples.

(+1 Solid drug dissolver (A-1). (A-2). (C-1) and (
C-2) As a solid drug dissolution container, it has the structure shown in the attached Figures 1 and 2, and the total area of the opening 3 of the main body 2 and the top part of the main body 1 is the same as that of the upper part of the main body 1. The solid drug storage container (^-
1) and 30% (^-2), and for comparison, the total area of the opening 3 of the upper lid 1 and the main body 2 is
A solid surplus drug dissolver (C-1) and a solid drug dissolver (C-1), which is 10% of the total surface area of the upper part of the main body 1 and the solid drug storage part of the main body 2;
It was equipped with a solid drug dissolver (C-2) manufactured by Ichisaka.

(2) Dissolution test of solid drug A rounded solid drug with a diameter of 45 cm and a weight of 60 g was prepared by pressure molding an lPt product containing 50% Parajik Luhensen powder and 50% sulfamic acid powder (heavy @ group Y $). The solid drug dissolver (A-1). (A-2), (C-1) and (C-2), each of which was installed at the entrance of the drain pipe after soaking the drain pipe of a wall-mounted stall-type urinal with hydrochloric acid containing a corrosion inhibitor. The urinal was used as usual, with automatic cleaning performed once every 30 minutes using 42 washes of water each time.

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

The test results are shown in Table 1 along with the results of a blank in which no solid drug was used.

In Table 1, the condition of the drain pipe entrance 30 days after the installation of the solid medicine was expressed in the following three levels.

O: No stain Δ: Slight stain ×: lη Moreover, the dissolution rate of the solid drug was calculated according to 2 below.

Amount of solid drug truck at setting 6": 30 [solid drug after 1] ji @ Dissolution rate 1 x 1 0 0 Solid drug at setting i6": 11°C ν Table ■ [Effects of the invention] FiiT Table 1 As shown in the figure, a solid drug consisting of a sublimable substance, parasitic acid, and a water-soluble biological substance, sulfamic acid, is stored in a solid drug dissolver having a sufficiently large opening in the top lid and main body. By installing it at the entrance of the toilet drain pipe, sulfamic acid effectively dissolves in urine or flush water over a long period of time, preventing the urinal drain pipe from becoming dirty. On the other hand, when the solid mulberry shavings dissolver of the comparative example, which lacks the opening part, is used, the drug dissolution rate is slow, and as a result, the urinal drain pipe is observed to be bent.

In the example, we have shown an example in which a solid drug consisting of paradichlorohenzene and sulfamic acid is stored and installed at the entrance of the urinal drain pipe, but 1! Even if a Li'l-type drug dissolver is used to store solid drugs made of other ascending substances and water-soluble materials, and is installed in a place where it comes into contact with running water intermittently, such as in a kitchen or bathroom, the solid It is possible to effectively dissolve chemicals over a long period of time and prevent scale from sticking to drain pipes.

In the present invention, a solid drug consisting of a sublimable substance and a water-soluble substance is stored in a solid drug dissolver. The present invention provides a method for preventing scale from sticking to drain pipes by storing and stably installing the drug in the place of use, and effectively dissolving the drug in flowing water over a long period of time, and a solid drug dissolver used therein. It has great industrial and public health significance.

[Brief explanation of drawings]

Figures 1 and 2: An implementation of the solid drug dissolver used in the present invention a
FIG. Figure 2: Perspective view of Figure 1. (Code used) 1: Upper roof Ia; Attachment part 1b; Eaves part 2: Main body 2a; Side body part 2b. Taber part 2c; Bottom part
3 - Openings 3a, 3b: Upper opening 3c. 3d, 3e: Wood opening 4: Internal protrusion 5: External protrusion 6; Installation tool A, solid drug B - Drain pipe

Claims (6)

[Claims] (1) Consisting of a top lid 1 and a main body 2, the area of the opening 3 provided in the top lid and the main body is 25% or more of the total surface area of the upper part of the main body of the top lid and the solid drug A storage part of the main body. A method for preventing scale in a drain pipe, characterized by storing a solid chemical consisting of a sublimable substance and a water-soluble substance in a container, and installing the container at the entrance of a drain pipe where water flows intermittently. (2) In claim (1), the solid drug dissolver comprises:
A method for preventing scaling of a drain pipe characterized by having an internal protrusion 4 and/or an external protrusion 5 on the tapered part 2b of the main body (3) A method for preventing scale in a drain pipe according to claim (1) or (2), characterized in that the solid drug dissolver has an installation tool 6 at the bottom of the main body. (4) Consisting of a top lid 1 and a main body 2, the area of the opening 3 provided in the top lid and the main body is 25% or more of the total surface area of the upper part of the main body of the top lid and the solid medicine A storage part of the main body, and A solid drug dissolver that stores a solid drug consisting of a sublimable substance and a water-soluble substance and is installed in a place where there is intermittent running water. (5) The solid drug dissolver according to claim (4), characterized in that an internal protrusion 4 and/or an external protrusion 5 are provided on the tapered portion 2b of the main body. (6) The solid drug dissolver according to claim (4) or (5), characterized in that an installation tool 6 is provided at the bottom of the main body.