JP6124426B1 - Filter for water purifier - Google Patents

Abstract

A housing to which an inflow side pipe of tap water is connected, and is attached to and detached from the housing, and a hollow portion becomes a drain tube to remove all or part of the chlorine in the tap water flowing from the inflow side pipe. In a water purifier comprising a cylindrical chlorine removal filter and an outflow side pipe that extends into the housing and is connected to the lower end of the drain pipe and from which tap water flows out, a part of the tap water is not allowed to pass through the filter. In order to adjust the residual chlorine concentration by flowing the bypass flow path, it is possible to do this on the side of the cylindrical chlorine removal filter that is attached to and detached from the housing. Therefore, the workability of setting the chlorine removal filter can be improved. A chlorine removal filter has an upper lid plate and a lower lid plate that close the upper and lower end portions, and a bypass is formed by forming a cylindrical opening in the upper lid plate to communicate with a drain tube. A path was secured, and the plug body 12 was provided in the cylindrical opening 10 so that the degree of opening and closing was variable. [Selection] Figure 1

Description

  The present invention relates to a water purifier (water purifier) that is attached to a water faucet or a water pipe and filters water, and in particular, upstream of a branch pipe in an apartment house, a detached house, an office, a school, a meter box, an undersink It is related with the filter for water purifiers used for the water purifier attached to water pipes, etc. and used for filtering water collectively.

  In recent years, in apartment buildings such as condominiums, detached houses, business establishments, schools, kindergartens, animal breeding facilities, etc., the water purifier is installed between the water main from the water purification facility and the branch pipe to the terminal water supply equipment. More and more cases are adopting means for filtering the water to be used together.

  This is because it is economical because it is not necessary to install a water purifier for each water supply device at the end, such as a water faucet for a sink or a pouring port of a water heater for a bathroom, and the space around the water supply device can be used effectively.

  However, in this case, if 100% of the chlorine contained in the tap water is removed, the tap water coming out of the faucet must have a chlorine concentration of not less than 0.1 ppm, which is incapable of complying with the standards of the Water Supply Act. Yes.

  In addition, when the water supply device is not used for a long time, there is a problem that tap water containing almost no chlorine stays in the branch pipe for a long time, and there is a risk of corrosion or generation of germs.

  The following Patent Documents 1 and 2 have been proposed for the purpose of ensuring the amount of chlorine contained in tap water that has passed through the water purifier, and although not shown, Patent Document 1 includes a cylindrical housing (casing). And a first filter for removing chlorine provided in the housing, a head cap for shielding the upper end of the housing, and an upper space between the upper end of the first filter and the head cap. An upper plate having a through-hole formed at substantially the center, and a flow channel from the gap between the peripheral edge of the upper plate and the head cap to the through-hole through the upper space is defined as a bypass flow path. A water purifier is disclosed in which a predetermined amount of tap water passing through one filter flows through the bypass flow path.

  In Patent Document 2, as shown in FIG. 8, a housing (casing) 2 to which a tap water inflow side pipe 8 is connected, and tap water that is disposed in the housing 2 and flows in from the inflow side pipe 8. A cylindrical chlorine removal filter 14 that removes all or part of chlorine, an outflow side pipe 9 that is connected to the housing 2 and from which tap water flows out, and a head cap 27 that is mounted on an end of the housing 2 A cylindrical body 18 having one end fixed to the head cap 6 and the other end inserted into one end of the hollow portion 15 of the chlorine removing filter 14, and a cylindrical water passing section opened on a side surface of the cylindrical body 18. 19 and a valve body 24 which is disposed inside or outside the cylinder body 18 and is manually or electrically rotated or vertically moved. The valve body 24 includes the cylinder water passage section 19 and the hollow section. Opening and closing degree of bypass passage 19a communicating with 15 In other words, all of the tap water that has flowed in from the inflow side pipe 8 passes through the chlorine removal filter 14 when the bypass passage 19a is closed, and part of the tap water does not pass through the chlorine removal filter 14 when the bypass passage 19a is opened. A water purifier is disclosed which flows out from the outflow side pipe 9 together with tap water passing through the passage 19a and passing through the chlorine removal filter 14.

  Further, in Patent Document 2, the valve body 24 is formed in a cylindrical shape that can turn inside the cylinder body 18, and the valve body water passage that communicates with the cylinder water passage portion 19 on the side surface of the valve body 24. A portion 25 is formed.

In addition, a foreign matter removing filter 26 disposed outside the cylindrical body 18 is provided.
Japanese Patent No. 3377778 Japanese Patent No. 4253351

The patent document 1 has the following problems.
(1) By fitting the upper end of the first filter with the lower surface of the upper plate, the first filter is fixed in the housing with a gap from the housing. Since the upper plate for fixing the first filter is an essential part of the water purifier, the number of parts is large and productivity is lacking. In addition, when replacing the first filter that has been clogged for a certain period of time with a new one, the head cap must be removed from the housing and the top plate must be removed. It is complicated and lacks workability.
(2) A part of tap water that rises in the gap between the housing and the first filter flows into the upper space from the gap between the outer edge of the upper edge and the head cap, but the outer edge of the upper edge and the head cap. The amount of tap water flowing through the bypass channel is small. Therefore, if clogging occurs in the first filter after using the water purifier for a certain period, the amount of water passing through the first filter is reduced, but the amount of water that can be used is reduced because the amount of water passing through the bypass channel is originally small, Until the first filter is replaced with a new one, the amount of water that can be taken out from the terminal water supply device is reduced.
(3) Even if the first filter is clogged, the amount of water passing through the bypass flow path is small, so that a large hydrodynamic pressure is applied to the first filter, and the first filter may be deformed or damaged.
(4) A bypass pipe connecting between the inflow side pipe and the outflow side pipe of the water purifier in order to secure the necessary amount of water even if the first filter is clogged, and to suppress the dynamic water pressure applied to the first filter; In addition, a bypass device including an on-off valve disposed in the bypass pipe is provided. This bypass device avoids water flow to the first filter by closing the on-off valve during normal use of the water purifier and opening the on-off valve when the filter is clogged. However, it requires a large space for arranging the bypass device outside the water purifier, and requires man-hours related to piping and arrangement work and lacks workability.
(5) The tap water flowing through the bypass flow path of the water purifier flows into the hollow portion of the first filter without passing through the first filter. Since the ceramic filter in which the ceramic particles are accommodated is disposed in the hollow portion of the first filter, the tap water that has passed through the bypass channel flows into the ceramic filter. Ceramic filters containing ceramic particles do not have the ability to capture foreign matter such as rust and dust, so when tap water contains foreign matter such as rust and dust, the foreign matter passes between the ceramic particles of the ceramic filter. However, it will flow out to the water supply equipment and water heater connected to the pipe downstream of the water purifier. In particular, in an electric water heater such as Ecocute, foreign matter such as rust tends to cause a failure.

On the other hand, Patent Document 2 can compensate for the disadvantages of Patent Document 1 as follows.
(1) Since one end portion is fixed to the head cap and the other end portion is provided with a cylindrical body inserted into one end side of the hollow portion of the chlorine removing filter, the cylindrical body supports one end portion of the chlorine removing filter, A chlorine removal filter can be disposed at a predetermined position in the housing. For this reason, components such as the upper plate of the water purifier disclosed in Patent Document 1 are not necessary, and the number of components can be reduced to increase productivity. When replacing the chlorine removal filter that has been clogged after a certain period of time with a new one, if the head cap is removed from the housing, the cylinder fixed to the head cap will also come out of the chlorine removal filter. Can be immediately removed from the housing. For this reason, the replacement | exchange work of a chlorine removal filter is easy, and it is excellent in workability | operativity.
(2) A part of the tap water passed through the housing reaches the hollow portion when the bypass passage of the cylindrical body is opened by the valve body. Since there is no obstacle to narrow the water path from the gap between the housing and the chlorine removal filter to the cylindrical water passage, such as the upper plate of the water purifier disclosed in Patent Document 1, depending on the degree of opening and closing of the bypass path The residual chlorine concentration can be adjusted by allowing the amount of water to flow into the hollow portion. In addition, when the water purifier is used for a certain period of time and the chlorine removal filter becomes clogged and the amount of water passing through the chlorine removal filter is reduced, the bypass passage is greatly opened until the chlorine removal filter is replaced with a new one. This makes it possible to take emergency measures to secure the amount of water required for the terminal water supply equipment. In this way, adjustment of residual chlorine concentration and emergency measures at the time of clogging can be easily performed with a single mechanism of a cylinder and a valve body arranged in the housing. Therefore, it is not necessary to separately provide a bypass device for first aid, so that the space for arranging the bypass device and the number of man-hours related to the placement work can be reduced.
Chlorine removal filters have a reduced chlorine removal capacity and clogging of filter media (activated carbon, etc.) over time, so the amount of chlorine leakage from the chlorine removal filter increases over time, and the amount of water passing through the chlorine removal filter is reduced and bypassed. The amount of water flowing through the road increases over time. For this reason, the residual chlorine concentration of purified water tends to increase gradually. In the water purifier of Patent Document 2, the residual chlorine concentration can be adjusted accurately with a single mechanism of the cylinder and the valve body. You can always get clean water with chlorine concentration.
(3) Since the hydraulic pressure applied to the chlorine removal filter can be suppressed by opening a large bypass path when the chlorine removal filter is clogged, the chlorine removal filter can be prevented from being deformed or damaged. .

However, Patent Document 2 has the following problems.
(1) Since one end portion is fixed to the head cap and the other end portion is inserted into one end side of the hollow portion of the chlorine removal filter, the cylinder body must support the one end portion of the chlorine removal filter. The chlorine removal filter cannot be disposed at a predetermined position in the housing. Unless the cylinder fixed to the head cap is removed from the chlorine removal filter, the chlorine removal filter cannot be immediately taken out of the housing, so that the replacement work of the chlorine removal filter is complicated and inferior in workability.
(2) The adjustment of the opening of the bypass passage must be performed from the outside of the housing after the chlorine removing filter is disposed at a predetermined position in the housing. For this reason, it is necessary to perform an adjustment operation by entering a portion where the housing is installed, for example, a narrow place such as under a sink, and workability is poor.

  The object of the present invention is to eliminate the disadvantages of the conventional example, and to adjust the residual chlorine concentration by flowing a bypass channel without passing a part of tap water through a filter, This can be done on the chlorine removal filter side, so it can be easily set before setting the chlorine removal filter, and the filter for the water purifier can improve the workability of setting the chlorine removal filter Is to provide.

In order to achieve the above-mentioned object, the present invention according to claim 1 is a housing in which a tap water inflow side pipe is connected, and is attached to and detached from the housing, and a hollow portion flows into the drain side pipe from the inflow side pipe. A water purifier comprising a cylindrical chlorine removing filter that removes all or part of the tap water chlorine, and an outflow side pipe that extends into the housing and is connected to the lower end of the drain pipe to allow tap water to flow out. The chlorine removal filter has an upper cover plate and a lower cover plate that close the upper and lower ends, and the upper cover plate is formed with a circular cylindrical opening communicating with the drain tube so as to protrude downward. A bypass path to the drainage cylinder is secured, and the plug body is fitted into the cylindrical opening so that the degree of opening and closing thereof is variable. The cylindrical opening has an inner peripheral surface formed as a screw, and the plug body disk Picking the top of the plate and facing the peripheral wall under it And was lacking a portion projecting a cylindrical body secured to the opening, it is an summarized in that the formation of the screw screwed into the screw on the outer peripheral surface of the cylindrical body.

  According to the first aspect of the present invention, the degree of opening and closing of the bypass passage can be adjusted by the plug body that engages with the upper cover plate of the cylindrical chlorine removal filter that is attached to and detached from the housing. This can be done before the removal filter is received in the housing.

In addition, the opening of the top cover plate of the cylindrical chlorine removal filter and the plug are connected by screwing, so they are firmly connected and there is no risk that the plug will loosen due to water flow compared to when it is just plugged in. A stable state can be maintained even after the filter is installed.

Furthermore, the degree of opening and closing can be adjusted steplessly with a screw, and fine adjustment can be easily performed.

The gist of the present invention described in claim 2 is that a cylindrical foreign matter removing filter is accommodated in the plug body.

According to the second aspect of the present invention, the foreign matter removal filter can prevent foreign matter such as rust and dust from flowing in, and since the foreign matter removal filter is housed inside the plug body, the foreign matter removal filter is installed. It is only necessary to engage the stopper body with the upper cover plate, and it can be installed easily and quickly without the need for winding or other trouble.

  As described above, the water purifier filter of the present invention includes a housing to which a tap water inflow side pipe is connected, and a tap water that is attached to and detached from the housing, and has a hollow portion as a drainage tube and flows from the inflow side pipe. In a water purifier comprising a cylindrical chlorine removal filter that removes all or part of chlorine in water, and an outflow side pipe that extends into the housing and is connected to the lower end of the drainage pipe so that tap water flows out. Because the residual chlorine concentration can be adjusted by flowing a bypass channel without passing a part of the tap water through the filter, this can be done on the side of the cylindrical chlorine removal filter attached to and detached from the housing. The setting of the chlorine removal filter can be easily performed before setting the chlorine removal filter, and the workability of setting the chlorine removal filter can be improved.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a partially cutaway front view of a water purification apparatus in which a filter for water purification apparatus of the present invention is installed, and the same components as those in FIG.

  The water purifier 1 in which the filter for water purifier of the present invention is installed also includes a housing 2 to which a tap water inflow side pipe 8 is connected, and all tap water that is disposed in the housing 2 and flows in from the inflow side pipe 8. Or it consists of the cylindrical chlorine removal filter 14 which removes some chlorine, and the outflow side piping 9 which is connected to the said housing 2 and a tap water flows out.

  The housing 2 is made of alloy steel such as stainless steel, plated steel plate, synthetic resin such as polyacetal, polycarbonate, ABS, etc., having a cross section formed into a cylindrical shape such as a circle, an ellipse, or a polygon. The housing upper part 2b as a head cap is fitted to the housing lower part 2a as the main body, and is fastened by the fastening band 20. In the figure, reference numeral 21 denotes an air bleeding nozzle.

  The chlorine removal filter 14 is of a cartridge type, and is a columnar body having a hollow portion that becomes the drain tube 5, and the filter medium is composed of antibacterial activated carbon 6 having a chlorine removal ability, and a nonwoven fabric is wound around the outer periphery thereof. In addition, an antibacterial and sterilizing functional ceramic 7 is laminated on the antibacterial activated carbon 6 at the outer periphery of the drain tube 5.

  Further, in order to make the chlorine removal filter 14 robust, a hard upper cover plate 3 and a lower cover plate 4 that do not have water permeability are attached and closed at the upper and lower ends. This is because the filtration area is large because the water is filtered while the tap water flows between the outer peripheral surface of the chlorine removal filter 14 and the hollow portion. The upper lid plate 3 and the lower lid plate 4 may be made of synthetic resin or metal.

  As shown in FIGS. 2 to 4, the upper lid plate 3 is formed with a circular cylindrical opening 10 communicating with the drainage cylinder 5 so as to protrude downward to secure a bypass path to the drainage cylinder 5. The plug 12 is fitted into the cylindrical opening 10 so that the degree of opening and closing is variable. As shown in FIG. 4, when the upper cover plate 3 is made of synthetic resin, a reinforcing rib 3 a concentric with the cylindrical opening 10 is formed on the back side surface.

  The cylindrical opening 10 has an inner peripheral surface formed as a screw 11, and the plug body 12 has a disk-shaped top plate 12 a as shown in FIGS. A cylindrical body 12b (arc piece) is provided with an opening 12c that is not provided with a portion, and a screw 13 that is screwed into the screw 11 is formed on the outer peripheral surface of the cylindrical body 12b.

  A jagged edge 12e is provided in the vertical direction on the outer peripheral surface of the top plate 12a, which is a knob, to prevent slipping.

  In the figure, reference numeral 16 denotes a lid fitted to the tip of the cylindrical body 12b, which is formed with a through hole 16a cut out like a ginkgo leaf and provided with a locking piece 16b to be inserted into the locking hole 12d formed at the front end of the cylindrical body 12b. It is a disk-shaped board.

  In the figure, reference numeral 17 denotes a cylindrical foreign matter removing filter, which is accommodated inside the plug body 12, and the lid body 16 is fitted into the cylindrical body 12 b so that the foreign matter removing filter 17 does not fall from the plug body 12. The opening 12 c is located on the side of the foreign matter removal filter 17.

  Next, the usage will be described. Before the chlorine removal filter 14 is set in the housing 2, the degree of opening and closing thereof is set by the plug body 12 fitted in the cylindrical opening 10 in the upper lid plate 3.

  The degree of opening and closing is determined by how much the opening 12c of the plug 12 protrudes above the cylindrical opening 10, and this is achieved by turning the top plate 12a, which is a knob, with respect to the cylindrical opening 10. It can be determined steplessly with about 12 screws.

  Thereafter, the chlorine removing filter 14 is set in the housing 2, but the outflow side pipe 9 extends into the housing 2 and the tip thereof is a screw joint 22. The chlorine removal filter 14 is supported by the outflow side pipe 9 and is accommodated in the housing 2 by screwing the joint portion 4 a formed in the above, and the lower end of the drain tube 5 of the chlorine removal filter 14 communicates with the outflow side pipe 9.

  The chlorine removal filter 14 is now set, and the tap water flowing into the housing 2 moves up the gap while expelling air accumulated inside the gap in the housing 2 and inside the upper portion of the housing, which is the head cap, from the air vent nozzle 21. To do. When the air in the housing 2 is expelled, the air venting nozzle 21 is closed.

  The tap water enters the chlorine removal filter 14 from the gap, and the chlorine is almost 100% removed while flowing into the drain tube 5. The tap water containing almost no chlorine flowing into the drain tube 5 flows out from the outflow side pipe 9.

  A part of the tap water that has risen through the gap passes through the bypass path to the drain cylinder 5 of the cylindrical opening 10 by the plug 12 and flows into the drain cylinder 5 without passing through the chlorine removal filter 14.

  As a result, tap water having a residual chlorine concentration corresponding to the degree of opening of the cylindrical opening 10 by the plug body 12 can be discharged from the outflow side pipe 9, and the residual chlorine concentration of the tap water flowing out from the outflow side pipe 9 is constant. The amount will be secured.

  When clogging occurs in the chlorine removal filter 14 using the water purifier 1 for a certain period and the amount of water flowing out from the outflow side pipe 9 is reduced, the chlorine removal filter 14 is replaced with a new one to return to the initial amount of water. be able to. However, when a new chlorine removal filter 14 is not prepared at hand, it cannot be immediately replaced with a new one, and when a large amount of water is required, the stopper 12 can be fully opened and the drain tube 5 can be passed. Take emergency measures to set the water volume to the maximum. Thereby, since the amount of water flowing into the drain cylinder 5 without passing through the chlorine removal filter 14 increases, the outflow amount of tap water from the outflow side pipe 9 can be increased.

It is the partially cutaway front view of the water purifier which installed the filter for water purifiers of this invention. It is a side view of the upper cover board part of the filter for water purifiers of this invention. It is a rear view of the upper cover board of the filter for water purifiers of this invention. It is a top view of the upper cover board of the filter for water purifiers of the present invention. It is explanatory drawing of a stopper. It is explanatory drawing of the cover body fitted to a stopper. It is explanatory drawing of the plug body which fitted the cover body. It is a vertical side view which shows a prior art example.

DESCRIPTION OF SYMBOLS 1 Water purifier 2 Housing 2a Housing lower part 2b Housing upper part 3 Upper cover board 3a Reinforcement rib 4 Lower cover board 5 Drain pipe 6 Antibacterial activated carbon 7 Functional ceramic 8 Inflow side piping 9 Outflow side piping 10 Cylindrical opening 11 Screw 12 Plug body 12a Top plate 12b Cylindrical body 12c Opening 12d Locking hole 12e Jagged 13 Screw 14 Chlorine removal filter 15 Hollow portion 16 Lid 16a Through hole 16b Locking piece 17 Foreign matter removal filter 18 Tube 19 Tube water passing portion 19a Bypass path 20 Tightening band 21 Air vent nozzle 24 Valve body 25 Valve body water passing part 26 Foreign matter removal filter 27 Head cap

Claims (2)

A housing to which tap water inflow side piping is connected, and a cylindrical shape that is attached to and detached from the housing, and has a hollow portion serving as a drainage cylinder to remove all or part of the chlorine flowing in from the inflow side piping. In a water purifier comprising a chlorine removal filter and an outflow side pipe that extends into the housing and is connected to the lower end of the drain tube to allow tap water to flow out, the chlorine removal filter is an upper cover plate that closes the upper and lower ends. And a lower lid plate, and a circular cylindrical opening communicating with the drainage cylinder is formed on the upper lid plate so as to protrude downward to secure a bypass path to the drainage cylinder. The plug body is fitted so that the degree of opening and closing thereof is variable, the cylindrical opening is formed with an inner peripheral surface as a screw, and the peripheral wall is opposed to the lower side of the plug disk-shaped top plate. Protruding a cylinder with a part of it missing and securing an opening Water purification apparatus filter, characterized in that the formation of the screw screwed into the screw on the outer peripheral surface of the cylindrical body.   The filter for water purifiers of Claim 1 which accommodates a column-shaped foreign material removal filter in the inside of a stopper.

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