JP2006007078A - Water collecting pipe, water collecting pipe unit, and filtering device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water collecting pipe excellent in corrosion resistance and chemical resistance, further in reverse washing property, with which the manufacture and formulation of a filtering device is simple, a water collecting pipe unit provided with the water collecting pipe, and a filtering device provided with the water collecting pipe, and the water collecting pipe unit. <P>SOLUTION: The water collecting pipe 2 is formed from a resin molded in a cellular state by sintering a polyethylene, a polypropylene, an ABS (acrylonitrile-butadiene-styrene) resin, an acrylate resin, or the like. One opening end portion of the water collecting pipe 2 is blockaded with a cap member 3, and a joint member 4 connectable with piping is provided on the other opening end portion to form the water collecting pipe unit 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a filtration device used for the production of aseptic water, drinking water, etc., treatment of domestic wastewater, industrial wastewater, and the like, and a water collection pipe and a water collection pipe unit provided in the filtration device.

  2. Description of the Related Art Conventionally, a filtering device in which a filter medium or the like is accommodated in a tank has been used for the production of aseptic water, drinking water, high-purity water, and the like, and the treatment of river water, domestic wastewater, industrial wastewater, and the like. In such a filtration device, a water collecting part is provided at the lower stage in the tank, and water from the pollutant is removed by a filter medium or the like by sucking water in the tank from the water collecting part with a pump. Obtainable.

  As shown in FIG. 3, the filtration device provided with the water collection unit as described above includes a filtration device 6a (first conventional example) provided with a water collection plate 12 provided with a number of strainers 11 at the lower stage in the tank 8a. As shown in FIG. 4, a filtration device 6b (second) is provided with a water collecting pipe 2b in which a Saran (registered trademark) fiber is wound around a metal pipe having a large number of holes formed in the lower part of the tank 8b. Conventional example), as shown in FIG. 5, a filtration device 6c (third conventional) in which a water collecting pipe 2c made of a metal pipe material in which a large number of holes are formed is embedded in gravel 13 laid in the lower stage of a tank 8c. Example) is known.

  However, in the filtering device 6a of the first conventional example, a large number of strainers 11 must be installed on the water collecting plate 12, and in the filtering device 6b of the second conventional example, saran fibers must be wound around the pipe material. In addition, in the filtration device 6c of the third conventional example, there is a problem that labor required for manufacturing and construction of the filtration device is large because gravel has to be laid.

  Moreover, in the filtration device 6b of the second conventional example and the filtration device 6c of the third conventional example, since metal pipes are used as the water collecting pipes 2b and 2c, not only the weight is large and handling is complicated, but also the corrosion resistance / There was a problem with chemical resistance. That is, when the water collecting pipes 2b and 2c are clogged, back washing is performed, but there is a problem that the water collecting pipes 2b and 2c are corroded by chemicals used in the back washing. Further, the conventional water collecting pipes 2b and 2c have a problem that the cleaning performance (clogging improvement performance) by backwashing is not sufficient.

  The present invention has been made in view of such a situation, and a water collecting pipe that is easy to manufacture and construct a filtration device, excellent in corrosion resistance and chemical resistance, and excellent in backwashing properties, and such a water collecting tube. It is an object of the present invention to provide a water collection pipe unit provided with a water pipe and a filtration device provided with such a water collection pipe or water collection pipe unit.

  In order to achieve the above object, first, the present invention provides a water collecting pipe used for filtration treatment, which is made of a porous resin (Claim 1). The water collection tube has a cylindrical shape, but the present invention is not limited to this, and may be, for example, an arbitrary polygonal tube shape, or one end may be closed, It may be a plate having a hollow inside.

  The porous resin has a structure similar to that of the sintered metal, and particularly has a porous structure in which the surface side is dense and the inner side is rough, and can exhibit a filtration function. According to the water collecting pipe (Claim 1), many strainers, saran fibers, gravel and the like that have been used in the past are not required, and the manufacture and construction of the filtration device are simplified. The water collecting pipe made of porous resin (Claim 1), unlike a metal pipe, is excellent in corrosion resistance and chemical resistance and is light in weight and easy to handle. Furthermore, since the tube body made of porous resin is usually dense on the surface side and rough on the inner side, when the water collecting pipe (Claim 1) is backwashed, the backwash water easily enters the pores, Therefore, the substance causing the clogging is easily removed from the water collecting pipe.

  In the said invention (invention 1), it is preferable that the said porous resin is resin which sintered or shape | molded the polyethylene, the polypropylene, the ABS resin, or the acrylic resin in the porous form (invention 2).

  In the said invention (invention 1 and 2), it is preferable that the said water collection pipe | tube has a porosity of 35 to 55% and a hole diameter of 100 to 1000 micrometers (invention 3). By having the porosity and the pore diameter of the water collecting pipe, it is possible to effectively capture contaminants in the water and perform filtration efficiently with little pressure loss.

  2ndly, this invention is the said water collection pipe (Claims 1-3), Comprising: The cylindrical water collection pipe which the both ends opened, The cap member which obstruct | occludes the one end part which the said water collection pipe opens, A water collecting pipe unit is provided, comprising a joint member provided at the other end of the water collecting pipe that can be connected to the pipe (Claim 4).

  Thirdly, the present invention provides a filtration apparatus comprising the water collecting pipe (Claims 1 to 3) or the water collecting pipe unit (Claim 4) (Claim 5). Such a water collection pipe or water collection pipe unit can be installed side by side in the water collection section of the filtration device without requiring saran fibers, gravel, or the like. Therefore, the filtration device (Claim 5) can be easily manufactured and constructed.

  The water collecting pipe and the water collecting pipe unit of the present invention are excellent in corrosion resistance and chemical resistance, are light and easy to handle, have excellent backwashing properties, and according to the water collecting pipe and the water collecting pipe unit of the present invention, the filtration device Manufacturing and construction of the product will be simple. On the other hand, the filtration device of the present invention can be easily manufactured and constructed by using the water collecting pipe or the water collecting pipe unit.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a water collecting pipe unit according to an embodiment of the present invention, and FIG. 2 is a schematic configuration diagram of a filtration device according to an embodiment of the present invention.

  As shown in FIG. 1, a water collection pipe unit 1 according to the present embodiment includes a substantially cylindrical water collection pipe 2, a cap member 3 that closes one end of the water collection pipe 2 that is opened, and the water collection pipe 2 that is open. It is comprised from the joint member 4 provided in the edge part.

  The water collecting pipe 2 in the present embodiment is made of a porous resin. Since the porous resin is porous in the same manner as the sintered metal, the water collecting pipe 2 itself can exhibit a filtering function.

  The kind of the porous resin is not particularly limited as long as it can exhibit a filtration function. Among them, a porous resin obtained by sintering or molding polyethylene, polypropylene, ABS resin, or acrylic resin into a porous shape is used. Is preferred. In particular, it is preferable to use ultrahigh molecular weight polyethylene (polyethylene having a weight average molecular weight of 1,000,000 or more) as polyethylene, and it is preferable to use (meth) acrylate resin as the acrylic resin.

  The porosity of the water collecting pipe 2 is preferably 35 to 55%, and the pore diameter is preferably 100 to 1000 μm. When the water collecting pipe 2 has such a porosity and a hole diameter, it is possible to effectively capture contaminants in the water and perform filtration efficiently with little pressure loss.

  The size of the water collecting pipe 2 can be appropriately set according to the size of the filtration device to be applied, the amount of water to be treated, and the like. For example, the outer diameter is 70 to 100 mm, the inner diameter is 55 to 65 mm, and the total length is 300. A water collecting pipe 2 of ˜1000 mm can be used.

  The manufacturing method of the said water collection pipe | tube 2 is not specifically limited, A conventionally well-known method is employable. For example, a water collecting pipe 2 made of a porous resin such as a sintered metal can be manufactured by filling a finely pulverized raw material resin into a mold or the like, and heating and sintering under normal pressure or under pressure. . When the resin is molded into a cylindrical shape in this way, the surface side of the cylinder wall is usually dense and the inner side is rough.

  On the other hand, the cap member 3 in the present embodiment closes the opening of the water collecting pipe 2 by being fitted to the end outer wall of the water collecting pipe 2, but can close the opening of the water collecting pipe 2. If possible, the structure and the material are not particularly limited.

  Moreover, the joint member 4 in this embodiment is for connecting the water collection pipe | tube 2 and the intake pipe 7 mentioned later, and in this embodiment, the joint member 4 is fitted to the edge part outer wall of the water collection pipe | tube 2. Yes. The joint member 4 is provided with a nut-like portion 41 having an inner wall formed with an internal thread, and has a structure that can be screwed with an external thread formed at one end of the intake pipe 7. As long as the intake pipe 7 and the intake pipe 7 can be connected, the structure and material of the joint member 4 are not particularly limited.

  According to the water collecting pipe unit 1 described above, since the water collecting pipe 2 made of a porous resin is used, the filtering device can be used without requiring many strainers, saran fibers, gravel and the like that have been used conventionally. It can be easily manufactured and constructed. In addition, the water collecting pipe unit 1 using the water collecting pipe 2 made of porous resin is easy to handle because it is lighter than the metal water collecting pipe unit, and when chemicals are used during backwashing. Even so, it has excellent corrosion resistance. Furthermore, since the water collecting pipe 2 made of porous resin is dense on the surface side and rough on the inner side, when the water collecting pipe 2 is back-washed, the backwash water easily enters the pores, thus causing clogging. The material is easily removed from the water collecting pipe 2.

Next, the filtration apparatus 6 using the said water collection pipe unit 1 is demonstrated.
As shown in FIG. 2, the filtration device 6 according to the present embodiment accommodates a predetermined filter medium inside a tank 8, and includes a plurality of water collecting pipe units 1 at the lower part in the tank 8, A water intake pipe 7 extending to the outside of the tank 8 is connected to each water collecting pipe unit 1. In the present embodiment, a male thread is formed at one end of the water intake pipe 7, and the male thread is screwed into the female thread of the nut-like portion 41 in the joint member 4 of the water collection pipe unit 1, whereby the water intake pipe 7 is the water collection pipe. Connected to unit 1. The plurality of water collecting pipe units 1 are usually installed in parallel, but the number and arrangement thereof are not particularly limited. Although not shown, a pump is provided at the other end or in the middle of the intake pipe 7.

  The filtration device 6 having the above-described configuration does not require many strainers, saran fibers, gravel, etc. that have been used in the past, and can be manufactured and constructed at low cost without requiring complicated work. It is.

  In the filtering device 6, the water to be treated is fed into the tank 8 from the water supply pipe 9 connected to the upper part of the tank 8 at a predetermined pressure, and after being filtered by the filter medium in the tank 8, the water intake pipe By being sucked by a pump provided at 7, it is filtered through the water collecting pipe 2 of the water collecting pipe unit 1 and taken out of the tank 8 through the water intake pipe 7.

  If the water collecting pipe 2 of the water collecting pipe unit 1 is clogged, it may be backwashed. However, as described above, the water collecting pipe 2 is excellent in backwashing properties, so that clogging can be easily improved. .

  The embodiment described above is described for facilitating understanding of the present invention, and is not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

  For example, the water collecting pipe 2 may be one in which one end is integrally formed with the pipe wall and closed, and in this case, the cap member 3 is unnecessary. Further, the joint member 4 and the water intake pipe 7 may be connected by an adhesive, or the water intake pipe 7 may be directly connected to the water collecting pipe 2. In the latter case, the joint member 4 is unnecessary.

  The water collection pipe, the water collection pipe unit, and the filtration device of the present invention are suitable for filtration treatment in the production of aseptic water, drinking water, etc., and in the treatment of domestic wastewater, industrial wastewater, and the like.

It is a perspective view of a water collection pipe unit concerning one embodiment of the present invention. It is a schematic structure figure of a filtration device concerning one embodiment of the present invention. It is a schematic block diagram which shows a 1st prior art example. It is a schematic block diagram which shows a 2nd prior art example. It is a schematic block diagram which shows a 3rd prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 1b, 1c ... Water collecting pipe unit 2 ... Water collecting pipe 3 ... Cap member 4 ... Joint member 6, 6a, 6b, 6c ... Filtration apparatus

Claims (5)

  A water collection pipe used for filtration treatment, comprising a porous resin.   The water collecting pipe according to claim 1, wherein the porous resin is a resin obtained by sintering or molding polyethylene, polypropylene, ABS resin, or acrylic resin into a porous shape.   The water collecting pipe according to claim 1, wherein the water collecting pipe has a porosity of 35 to 55% and a pore diameter of 100 to 1000 μm. The water collecting pipe according to any one of claims 1 to 3, wherein both ends of the water collecting pipe are open,
A cap member that closes one open end of the water collecting pipe;
A water collecting pipe unit, comprising: a joint member provided at the other end of the water collecting pipe that can be connected to the pipe. A filtration apparatus comprising the water collecting pipe according to claim 1 or the water collecting pipe unit according to claim 4.

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