JP2000300913A - Filter apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make easily separable a filter from a state where the piping worl has bean just completed. SOLUTION: In the filter apparatus, a valve anchoring seat 11 wherein the pipe ends of an inflow piping 3 and an outflow piping 10 are opened to a seat surface is formed on the sided of a filter 1 and a valve fixing part 22 wherein flanges are provided to the mouth parts of the inflow and outflow pipings projected in the same direction of a five-way changeover valve 12 is formed on the side of the changeover valve and both of the valve anchoring seat 11 and the valve fixing part 22 are clamped in a freely detachable manner by clamp members such as bolts 25. When the fixing of the filter 1 and the changeover valve 12 is released, the filter 1 having the inflow and outflow pipes 3, 10 attached thereto can be separated from the five-way changeover valve 12 to which an external piping is attached and only the filter 1 can be easily moved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter for removing impurities (such as turbid substances such as iron) dissolved in well water.

[0002]

2. Description of the Related Art Many iron (impurities) are dissolved in well water pumped from a well by a water supply pump.

[0003] Therefore, a filtration device for removing iron is attached to a water supply pipe to remove iron contained in well water and the like.

[0004] In the filtration device for removing iron, a pretreatment for oxidizing dissolved iron is performed using a filter (for example, sodium hypochlorite is injected into well water as an oxidizing agent to oxidize dissolved iron contained therein. ) Is used to filter the well water that has passed through to separate and remove the contained iron. In particular,
As shown in FIG. 3, for example, a tank-type filter c in which an inflow pipe a is assembled at an upper part and an outflow pipe b is assembled at a lower part
And a filter member, for example, a structure in which a filter sand d or gravel e is accommodated in the filter c is adopted, and while the raw water flowing from the inflow pipe a passes through the filter sand d, the gravel e, and the like, Impurities such as iron contained in raw water are removed.

[0005] By the way, filter members such as filter sand d and gravel e are clogged as the capture of iron proceeds.

[0006] In order to eliminate the decrease in filtration performance and pressure loss due to the clogging, the filtration device supplies water in a direction opposite to the flow of water at the time of filtration to remove impurities such as iron attached to the filtration member. It is required to periodically perform an operation of washing off (washing of the filtration member), that is, a so-called reverse washing.

[0007] In a filtration device, a valve mechanism for switching between a filtration operation and a backwashing operation is assembled so that such backwashing can be easily performed. Specifically, conventionally,
As shown in FIG. 3, a switching valve, for example, a five-way switching valve f is mounted on the outer surface of the filter c.
Is connected to an inflow pipe a extending from the upper side of the filter and an outflow pipe b extending from the lower side of the filter c to assemble a valve mechanism. Then, after installing the filter c at a desired location, an external pipe and a five-way switching valve f of the filter c are connected.
Specifically, a raw water pipe g for supplying raw water, a treated water drain pipe h for discharging treated water after filtration, and a backwash drain pipe i for discharging backwashed washing water are connected.
By this structure, for example, the lever j attached to the five-way switching valve f is operated to communicate the raw water pipe g with the inflow pipe a.
Operation of a filtration mode in which raw water (oxidized water) is filtered by filtration sand d and gravel e by connecting the treated water drain pipe h and the outflow pipe b to a position where the backwash drain pipe i is shut off. (Raw water piping g → inflow piping a → filtration member → outflow piping b → treated water drainage piping h). Similarly, by lever operation, the raw water piping g and outflow piping b are connected, and backwash drainage piping i flows in By connecting to the pipe a and switching to the position where the treated water drain pipe h is shut off, the operation of the backwash mode in which the raw water cleans the filtered sand d and the gravel e (raw water pipe g → outflow pipe b →
A filter member → inflow pipe a → backwash drainage pipe i) is performed. In FIG. 3, solid arrows indicate the flow of water during the filtration operation, and broken arrows indicate the flow of water during the backwash operation.

[0008]

Filter members such as filter sand d and gravel e have to be replaced periodically because the filter performance deteriorates after a certain period of use.

At this time, for example, the upper side of the filter c is opened, and the filtered sand d and gravel e inside are taken out and replaced with new filtered sand d and gravel e.

[0010] By the way, this replacement work can be easily carried out if there is a space for filtering sand d and gravel e around the filter c. Therefore, when the place where the filter c is installed is too small, There has been a demand to move the filter c to a place where it is easy to work. This demand is often seen by users who have installed compact household filtration devices that have enabled installation in small spaces.

However, the installation structure of the five-way switching valve f and the connection structure of each pipe do not consider the movement of the filter c after the completion of the piping work. After the fixing of the five-way switching valve f with external pipes (raw water pipe g, treated water drain pipe h, backwash drain pipe i) and the filter c, the inflow pipe a extending from the filter c The filter c cannot be operated unless a rather difficult operation of breaking the connection between the outlet pipe b and the switching valve f is performed. In particular, the compact household filtration device employs, as the inflow pipe a and the outflow pipe b, pipes made of vinyl chloride, which take into account that the joints cannot be inadvertently released by using screwing and adhesive together. The junction between the inflow pipe a and the outflow pipe b is not easily unraveled, and it is difficult to move the filter c.

The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a filtration device that allows a filter to be easily separated from a state where piping has been completed.

[0013]

According to a first aspect of the present invention, there is provided a filtration apparatus, wherein when a fixing between a filter and a switching valve is released, an inlet pipe and an outlet pipe remain assembled. Separation means is used to separate the raw water pipe, treated water drain pipe and backwash drain pipe from the switching valve, and the filter is switched between the filter and the switching valve. , And the inflow pipe and the outflow pipe are separated from the switching valve while being attached to the filter.

[0014] Thereby, from the state where the pipe construction is completed,
Separation of the filter can be easily performed, and even if it becomes necessary to move the filter for replacement of the filter member, this can be easily dealt with.

[0015] In addition to the above object, the filter according to the second aspect can be separated into a switching valve having an external pipe assembled and a filter having an inflow pipe and an outflow pipe assembled with a simple structure. As the separating means of the present invention, a seat for valve installation is formed on the outer surface of the filter, and the pipe ends of the inflow pipe and the outflow pipe are opened on this common seat to form a valve installation seat. Forming a port for the inflow pipe and a port for the flow pipe protruding in the same direction corresponding to each opening in the valve body of the switching valve,
A flange is formed at the tip of each of these ports to form a valve fixing portion, and each flange and the seating surface are detachably fastened by a fastening member, so that the pipe ends of the inflow pipe and the outflow pipe and the valve body of the valve body. A structure was adopted in which the ports were connected to each other and the switching valve and the filter were fixed.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on one embodiment shown in FIGS.

FIG. 1 shows, for example, a well filtration device used in ordinary households. In the figure, 1 is a vertically long iron removal filter (corresponding to the filter of the present application) installed vertically. The filter 1 has, for example, a vertical body 1a having a bottomed cylindrical shape with an open top, which is installed vertically on an installation surface, and a mirror-plate-shaped detachably attached to an opening end of the body 1a. And a lid 1b.

An inflow pipe 3 (upper pipe) is incorporated in the upper part of the peripheral wall of the body 1a. The inflow pipe 3 has a substantially L-shape in which one end portion penetrates the upper part of the peripheral wall of the body portion 1 in the lateral direction, and the other end portion is bent upward (at the side of the lid 1b) at a central point in the body portion 1a. It is formed of a piping member. Then, the end of the inflow pipe 3 protruding outward from the body 1a is connected to a seat surface for valve installation formed on the outer surface of the body 1a as shown in FIG. 2, for example, an end of a pipe member. It is open from the fixed flange-shaped seat plate 4.

In the body 1a, for example, filter sand 5 (corresponding to a filter member) is accommodated to a predetermined height. Also, between the bottom wall of the body 1a in the shape of a mirror plate and the filter sand 5 thereabove, an annular filter for preventing the outflow of the filter sand 5, for example, a formed filter 6 formed of resin fibers in an annular shape (filtration) (Corresponding to a member). The opening on the upper side of the forming filter 6 is closed by a plate member 7 assembled so as to overlap with the opening end, and forms a collecting space 8 inside the forming filter 6. Reference numeral 9 denotes an attachment for attaching the plate member 7 to the bottom wall of the body 1a, for example, a bolt.

An outflow pipe 10 (lower pipe) is incorporated in the filter 1 using the plate member 7 and the seat plate 4. The outflow pipe 10 includes a pipe portion 10a extending upward from the bottom side of the body 1a, a pipe portion 10b extending in the lateral direction of the body 1a, and a space between the two pipe portions 10a and 10b (the upper end of the pipe portion 10a and It is composed of a combination with a relay member 10c that connects the inner ends of the pipe members 10b). The lower end of the lowermost piping member 10 a is connected to the plate member 7 and opens to the collecting space 8. As shown in FIG. 2, the end of the uppermost pipe member 10 b is aligned with the end of the inflow pipe 3, and the peripheral wall portion of the body 1 a below (for example, directly below) the inflow pipe 3. Is connected to the seat plate 4 through the
It is open from. A plurality of bolt insertion holes (not shown) are formed in the seat plate 4 around the ends of the inflow pipe / outflow pipe. A valve installation seat 11 is formed in the common (identical) seat plate 4 by a structure in which the pipe ends of the inflow pipe 3 and the outflow pipe 10 housed in the filter 1 are opened. .

A switching valve for switching between the operation in the filtration mode and the operation in the backwash mode, for example, a five-way switching valve 12 is attached to the valve seat 11. For example, as shown in FIG. 2, the five-way switching valve 12 has a mouth part 1 having a raw water receiving port 13.
The three-way switching valves 15 and 16 are connected on both sides of the
A unitized structure is used for three structures. Out of the mouths of the valve bodies 15a and 16a of the switching valves 15 and 16, a backwash drain port 17 is formed from an upwardly projecting port, and a treated water drainage port 18 is formed from a downwardly projecting port. ing. The two mouths protruding to the same side correspond to the respective pipe ends (inflow pipes / outflow pipes 3 and 10) opening from the seat plate 4, and the inlets for the inflow pipes combined with the respective pipe ends. 19 and an outlet 20 for an outflow pipe.
Further, flanges 21 each having a plurality of bolt insertion holes (not shown) are formed at the distal ends of the mouth portions 19 and 20, and a valve fixing portion 22 combined with the valve installation seat 11 is formed in the same portion.
Is composed. In addition, the mouth part 14, the valve bodies 15a, 1
An operating member, for example, a rotatable lever-shaped operating handle 23, is provided on the main body of the five-way switching valve 12 formed by 6a.
A transmission mechanism for transmitting the same handle displacement to valve bodies (not shown) of the three-way switching valves 15 and 16, for example, a lever mechanism 24 is incorporated, and by operating the operation handle 23 to one side or the other side, a lever is operated. The flow paths required for the operation in the filtration mode are switched, and the flow paths required for the operation in the backwash mode are switched.

Each flange 21 of the five-way switching valve 12 is
As shown in FIG. 2, a fastening member, for example, a bolt 25 inserted through a bolt insertion hole and a nut 25 screwed to the end of the bolt 25
a to connect the respective ports 19 and 20 of the five-way switching valve 12 to the respective pipe ends of the inflow piping / outflow piping 3 and 10 while simultaneously connecting the five-way switching valve 12 as a whole. It is detachably fixed to the filter 1. In FIG. 2, 30
Denotes a seal member interposed between the seat plate 4 and each flange 21.

The raw water receiving port 13 of the five-way switching valve 12
Raw water pipe 2 for supplying raw water (water after oxidation treatment)
7 is connected to the backwash drain port 17, a backwash drain pipe 28 for draining the wash water that has washed the filter sand 5 and the forming filter 6 (filter member) is connected, and the treated sand drain port 18 is connected to the backwater drain port 18. , Treated water drainage pipe 29 for draining treated water filtered by the forming filter 6 (filtration member) (all external pipes)
Is connected. Thereby, for example, the operation handle 23
To one side to switch the communication between the raw water pipe 27 and the inflow pipe 3, the communication between the treated water drain pipe 18 and the outflow pipe 10, and the cutoff of the backwash drain pipe 28, thereby performing the switching shown in FIG. As indicated by the solid arrow, raw water (oxidized water) from the raw water pipe 27 is guided from the inflow pipe 3 to the upper part in the filter 1, and the raw water passes through the filter sand 5 and the forming filter 6. Then, iron (impurities) contained in the raw water is filtered. This filtered water is collected in the collecting space 8.
The operation in the filtration mode is performed in which the wastewater is guided to the treated water drainage pipe 29 through the outflow pipe 10. Conversely, by operating the operation handle 23 to the other side, the raw water pipe 27 and the outflow pipe 10 are communicated, the backwash drainage pipe 28 and the inflow pipe 3 are connected.
The raw water (oxidized water) from the raw water pipe 27 is discharged from the outflow pipe 1 as shown by the dashed arrow in FIG.
0 is guided to the lower collecting space 8 in the filter 1, and while this raw water passes through the forming filter 6 and the filter sand 5, the iron (impurities) attached to the filter 6 and the filter sand 5 is washed away. (Washing). After the washing, the washing water is supplied to the inflow pipe 3
The operation in the backwash mode, in which the gas is guided to the backwash drainage pipe 28 through the backwash mode, is performed. In addition, 3 in FIG.
Reference numeral 1 denotes a drain plug for closing a drain port for draining water in the filter 1.

Each port 19, 2 of the five-way switching valve 12
The filter 1 is attached to the seat plate 4 of the filter 1 so that the filtration sand 5 and the formed filter 6 of the filter 1 can be easily replaced. , Is separated from the five-way switching valve 12 with the external piping (separating means).

That is, in order to easily replace the filter sand 5 and the formed filter 6 (both are filtering members), a place where the filter 1 is installed is small and other work is easily performed. And move it to

At this time, as shown in FIG. 2A, the filter 1 and each external pipe (raw water pipe 27, washing water drain pipe 2)
8, between the treated water drainage pipes 29), the five-way switching valve 1
2, the bolts 25 and nuts 25 a fastening between the flanges 21 of the five-way switching valve 12 and the seat plate 4 of the filter 1 as shown in FIG. When the fixing is released, the filter 1 and the five-way switching valve 12
Is disconnected, and the communication between the filter 1 and the five-way switching valve 12 is released.

That is, when the fixing between the filter 1 and the five-way switching valve 12 is released, the five-way switching valve 12 with the external piping attached, the inflow piping 3 and the outflow piping 10 are assembled. It is separated into the filter 1 as it is.

Therefore, from the state where the piping work has been completed,
Only the filter 1 can be easily separated, and the filter 1 can be moved to a place where replacement work is easily performed.

Therefore, even if it becomes necessary to move the filter 1 for replacement of the filter member, the filter 1 is brought into the work place where the filter 1 is moved, and the filter sand 5 and the formed filter 6 are replaced. Can be. It is particularly effective for a compact household filtration device.

Moreover, the structure that allows the filter 1 to be separated is constituted by the openings 19 and 20 of the five-way switching valve 12 and the flange 21.
And a valve mounting seat 11 formed by opening the pipe ends of the inflow pipe 3 and the outflow pipe 10 in the seat plate 4 of the filter 1 with the bolts 25 so as to be detachably connected. By simply removing the fastening by the bolts 12, the filter 1 with the inflow pipe 3 and the outflow pipe 10 from the switching valve with each external pipe can be easily assembled.
Can be separated. In particular, when the five-way switching valve 12 is used, a separation structure is easily formed. Further, if a structure in which the inflow pipe 3 and the outflow pipe 10 are housed inside the filter 1 is adopted, a valve installation seat 11 with good appearance can be formed.

In the above-described embodiment, an example of a filter device in which a single operation handle is turned to switch between the operation in the filtration mode and the operation in the backwash mode has been described. However, the present invention is not limited to this. For example, a switching valve having another operation handle may use an electric driving motor as an actuator and use a switching valve that switches modes using the driving force of the motor, for example, an automatically operated valve device.

In one embodiment, the switching valve has a five-way valve structure in which a three-way valve is combined. However, the present invention is not limited to this, and a valve structure in which other valves are combined to form a unit is adopted. Is also good.

In the above-described embodiment, the present invention is applied to the filtration device for removing iron. However, the present invention is not limited to this, and may be applied to a filtration device for other uses. Of course, not well water
It may be applied to a filtration device that purifies other water supply.

[0034]

As described above, according to the first aspect of the present invention, when the fixing between the filter and the switching valve is released, not only the filter is separated from the switching valve but also the inflow pipe and the outflow pipe. Since the pipe and the filter can be separated from the switching valve while being attached to the filter, it is possible to easily separate only the filter from the state where the piping is completed.

Therefore, even if it becomes necessary to move the filter for replacement of the filter member, the filter can be easily moved to the destination work place.

According to the second aspect of the present invention, in addition to the above-described effects, it is possible to separate the switching valve having the external pipe assembled and the filter having the inflow pipe and the outflow pipe assembled with a simple structure. .

[Brief description of the drawings]

FIG. 1 shows a structure of a filtration device according to an embodiment of the present invention,
The figure shown together with the flow of water at the time of water purification and backwashing.

FIG. 2 is a view for explaining a structure for separating a filter from a switching valve.

FIG. 3 is a cross-sectional view for explaining the structure of a conventional iron removing filter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Filter 3 ... Inflow piping 4 ... Seat plate (seat surface) 5, 6 ... Filter sand, molded filter (filtration member) 10 ... Outflow piping 11 ... Valve installation seat 12 ... 5-way switching valve (switching valve) 19 , 20 ... Port for inflow piping, Port for outflow piping 21 ... Flange 22 ... Valve fixing part 23 ... Operation handle 25 ... Bolt (fastening member) 27 ... Raw water piping 28 ... Backwash drainage piping 29 ... Treated water drainage piping.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) B01D 29/38 520A 29/42 510

Claims (2)

[Claims] 1. A filter member for filtering raw water is accommodated, and an inlet pipe for introducing raw water from one side of the filter member and an outlet pipe for discharging treated water filtered from the other side are assembled. A raw water pipe for supplying raw water to the filter; a treated water drain pipe for draining the treated water filtered by the filter; and a backwash drainage for draining washing water obtained by backwashing the filter. And a pipe, which is detachably fixed to an outer surface of the filter and is connected to each of the pipes, guides raw water from the raw water pipe from the inflow pipe to the inside of the filter, and guides raw water from the outflow pipe to the treatment drainage pipe. A switching valve switchable between a filtration mode and a backwash mode in which raw water from the raw water pipe is guided from the outflow pipe into the filter and guided from the inflow pipe to the backwash drain pipe, and the filter and the switch valve Solid between And separating means for separating the filter from the raw water pipe, the treated water drainage pipe and the switching valve with the backwash drainage pipe still assembled while the inflow pipe and the outflow pipe are assembled. A filtration device, comprising: 2. The separation means forms a seat for valve installation on an outer surface of a filter, and opens a pipe end of the inflow pipe and the outflow pipe on the common seat to form a valve installation seat. In the valve body of the switching valve to which the raw water pipe, the treated water drain pipe and the backwash drain pipe are connected, a port for the inflow pipe and a port for the inflow pipe protruding in the same direction corresponding to the openings. Forming a valve fixing portion by forming a flange at the tip of each of these mouth portions, by detachably fastening the flanges and the seating surface with a fastening member, thereby forming each of the inflow piping and the outflow piping. The filtration device according to claim 1, wherein a pipe end and each port of the valve body are connected and connected, and the switching valve and the filter are fixed.