JP2002166136A - Method and jig for assembling filter members - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply assemble filter members, even though they are filter elements with protruding core ends into a structure in which they are pushed against the lower end position regulation members by coil springs. SOLUTION: In fitting core sockets 27-29 to their respective ends 23a and 23b of a core 23, the spring force of a coil spring 40 is killed by means of a spring presser 132, and the lower core socket 28 is pressed toward the direction of the arrangement of a spring presser 132 by means of a jack 150. As a result, the respective core sockets 27-29 can be fitted into the respective ends 23a and 23b of the core 23 without fail. The lower nut 30 can be fitted into the predetermined fit position without fail, because the respective sockets 27-29 are pushed after removing the presser 132 to utilize the spring force of the spring 40 after the sockets 27-29 are fitted into the respective ends 23a and 23b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembling method and an assembling jig for a filter member used for filtration of general industrial condensate water, tap water, industrial water, industrial effluent, power plant water, boiler condensate treatment, and the like. .

[0002]

2. Description of the Related Art For example, in a thermal power plant, steam generated in a boiler is sent to a high-pressure turbine and a low-pressure turbine in this order.
Each turbine rotates a generator to generate power, and the steam after power generation is cooled by a condenser and sent to a condensate purification system as condensate, which is used repeatedly. In the condensate purification system, the condensate is filtered,
Suspended substances such as iron oxide fine particles generated from piping materials such as boilers and piping materials, and Cu
After removing various ion components such as ions, Na ions, and Cl ions, the condensate passes through a low-pressure feedwater heater and a high-pressure feedwater heater in this order, and is sent to a boiler.

In a boiling water nuclear power plant (BWR), steam generated in a nuclear reactor is sent to a high-pressure turbine and then to a low-pressure turbine in order, and each turbine rotates a generator to generate electricity. It is cooled by a water heater and sent to the condensate purification system as condensate, which is used repeatedly. In the condensate purification system,
The condensate is sent in the order of a filtration device and a condensate desalination device, and various suspended substances such as iron oxide fine particles and Cu ions, Na ions, and Cl ions generated from piping materials such as reactors and equipment. After removing the ionic components, the condensate passes through a low-pressure feedwater heater and a high-pressure feedwater heater in this order and is sent to the reactor. Also,
In addition to the condensate purification system, the power plant is equipped with a reactor coolant purification system and a fuel pool cooling purification system.These purification systems also remove suspended substances and ionic components generated in the system. ing.

[0004] As a filtration device used in each of the above-mentioned purification systems, for example, a filtration device in which a filter member is suspended and supported in a water collecting hole formed in an eye panel provided horizontally in a tower body is used. . In addition, as the filtration element, a filtration membrane is disposed around the core by, for example, folding it into a pleated shape, and a substantially cylindrical cartridge type whose outside is coated with, for example, a polypropylene net is used. A perforated tube is arranged so as to penetrate the hollow portion, and the upper end side of the perforated tube is inserted into the water collecting hole of the above-mentioned perforated plate, and protrudes toward the filtered water chamber formed above the perforated plate. , Fixed and suspended using nuts. A cylindrical spacer member is disposed between the lower end of the eye plate and the upper end of the filtration element, thereby regulating the position of the upper end of the filtration element. A nut is mounted on the lower end side of the perforated tube, and the lower end position of the filtration element is regulated by the nut.

[0005]

However, the length of the above-mentioned cartridge type filtration element is usually allowed to some degree of manufacturing error. Therefore, as described above, when the upper and lower end positions of the filtration element on the perforated tube are fixed by the spacer member and the nut, if the filtration element is attached to the perforated tube so as not to move up and down, the filtration element Since the manufacturing error is included, it is necessary to change the tightening position of the nut for each perforated tube to which the filtration element is attached, and the operation of attaching the filtration element to hundreds of perforated tubes becomes very troublesome.

[0006] In the initial stage of water passage, when the filter elements are arranged in series, the maximum length of the filter elements is reduced by about 10 mm by wetting. Therefore, even if the filter element is accurately mounted in consideration of the above manufacturing tolerance, when water is started and wet, a gap is formed between the nut and the spacer and the filter element,
During the water passing treatment, the filtration element vibrates around the perforated tube, and there is a possibility that the water to be treated is not passed through the filtration element and is sent to the filtration water chamber without being treated.

As a technique for solving the above-mentioned problem, a coil spring is disposed between the upper end of a perforated tube protruding above the eye plate and the upper surface of the eye plate, and the coil spring is disposed in the element chamber by the coil spring. There is known a means for absorbing the manufacturing tolerance and the amount of shrinkage when wet by constantly pressing and biasing the provided filtering element toward the lower surface of the perforated plate. However, in this case, the coil spring protrudes above the eye plate, and the working space in the filtered water chamber is limited. In addition, when the coil spring is disposed on the perforated plate, the resistance of the treated water at the time of outflow is caused. Further, by disposing the coil spring, the occurrence of rust and the like increases, and the water quality of the treated water is reduced. Becomes Therefore, when disposing the coil spring, it is appropriate to dispose the coil spring not at the upper part of the perforated plate but between the filter element and the element chamber.

On the other hand, in the case where a filtration element of a type whose core end protrudes from an end member, which is mainly used in a small filtration device such as an ultrapure water production device, is to be used in the above-mentioned condensate purification system. It is necessary to use a core socket having a cup-shaped fitting portion that can be fitted to the end of the core projecting from the end member when connecting the filtration element to the porous tube. However, since a sealing member such as an O-ring is provided between the core socket and the end of the core, a considerable pressing force is required to attach the core socket to the end of the core. For this reason, even if a filter element of this type is used and a coil spring is used to solve the above-described problem, the core socket will be resiliently mounted on the coil spring. The problem arises that pressure cannot be applied. In this case, the fitting state between the end of the core and the core socket becomes insufficient, a gap is formed between the two, and the performance cannot be sufficiently exhibited despite the use of the coil spring. Become.

The present invention has been made in view of the above,
While using a cartridge-type filtration element in which the end of the core protrudes from the end member, the filter member having a structure that can be pressed against the lower end position regulating member by a coil spring has a simple configuration, Assembling of a filter member capable of securely assembling the end portion and the core socket and assembling, and effectively exhibiting a function of a coil spring absorbing a manufacturing tolerance of the filtration element and a contraction amount at the time of passing water. It is an object to provide a method and an assembly jig.

[0010]

According to the first aspect of the present invention, there is provided a filter member suspended and supported through a water collecting hole of a panel provided in a tower body. A perforated pipe having a flange portion near one end, which abuts on the lower surface of the eye plate and functions as a stopper for restricting the amount of projection to the filtered water chamber when one end is inserted through the water collecting hole. A step of inserting a coil spring of a predetermined length from the other end side until it comes into contact with the flange portion, and a step of inserting a cartridge type filtration element formed in a substantially cylindrical shape from the other end side of the porous tube. After holding the spring force of the coil spring so as not to act on the filtration element by a spring holding plate, while pressing in the direction of pressing the filtration element against the spring holding plate, Attaching a lower end position regulating member to the other end of the hole tube, fitting an end of the core projecting from the filtration element to a core socket arranged around the perforated tube in any of the steps, and The presser plate is removed, and the coil spring is used to apply a spring force that resiliently urges the filter element toward the lower end position regulating member, while moving in a direction in which the filter element is pressed against the coil spring against the spring force. And placing the lower end position regulating member at a predetermined mounting position. In the present invention as set forth in claim 2, before the step of pressing the filter element in the direction of pressing the filter element against the spring holding plate, a plurality of the filter elements are arranged in series along the perforated pipe via a core socket for connection. 2. The method for assembling a filter member according to claim 1, further comprising the step of: According to the third aspect of the present invention, when one end is inserted into the water collecting hole of the eye panel provided in the tower main body, the one end is in contact with the lower surface of the eye panel to regulate the amount of projection to the filtration water chamber side. A perforated tube having a flange portion functioning as a stopper near one end, a cartridge-type filtration element formed in a substantially cylindrical shape mounted around the perforated tube, and mounted on the other end side of the perforated tube, A lower end position regulating member that regulates a lower end position when the filtration element is arranged in the element chamber below the perforated plate, and is mounted between a flange portion of the perforated pipe and one end of the filtration element, and the filtration element is attached to the lower end. What is claimed is: 1. An assembling jig used for assembling a filter member having a coil spring biasing toward a position regulating member, comprising: a gantry for supporting said porous tube in a horizontal state; A spring retainer interposed between the coil spring and the filter element for holding the filter element inserted around the pipe as required during the assembly process without operating the spring force of the coil spring. Board and
Used when the lower end position regulating member is attached to a predetermined position of the perforated pipe, and when a spring holding plate is interposed between the coil spring and the filtering element, the spring holding plate is When the spring force of the coil spring is functioning without the interposition of the holding plate, the coil spring is provided with pressing means capable of pressing the filter element in a direction of pressing the filter element. Provide an assembly jig.

[0011]

Next, the present invention will be described in more detail with reference to the embodiments shown in the drawings. First, for ease of understanding, based on FIGS. 1 to 13, an example of a structure of a filter member manufactured using the assembling method and the assembling jig of the present invention, and an overall structure of a filtering device using the filter member An example will be described. In these figures, 1 indicates a tower main body of the filtration device, and 2 indicates a filter member. Inside the tower main body 1, a face plate 10 in which a plurality of water collecting holes 10a are formed.
The filtered water chamber 11 is formed in the upper part and the element chamber 12 is formed in the lower part with the board 10 as a boundary.

A plurality of filter members 2 are suspended and supported in the element chamber 12 corresponding to the plurality of water collecting holes 10a. Then, the water to be treated flows into the element chamber 12 through the inflow pipe 13,
The inflowing water to be treated hits the lower part (end plate) of the tower, so that the lower part of the tower functions as a baffle plate, is uniformly distributed in the tower, is filtered through the filter member 2, and is filtered. After flowing into the inside, it is sent from the outflow pipe 14 to the next step.

The filter member 2 is, as shown in FIG.
It has a perforated tube 21 as a shaft member and a filtration element 22 mounted around the perforated tube 21. As shown in FIG. 3, the porous tube 21 is formed of, for example, stainless steel, and has a plurality of small holes 21 a formed on a peripheral surface thereof. (See FIG. 2).

An end wall member 21b is fixed to an end of the perforated tube 21 which is the lower end when the tube is suspended from the eye panel 10, and a lower bolt 21c is attached to the end wall member 21b.
Are fixed so as to protrude outward. Also, eyeboard 1
A flange 21d is welded to the outer periphery of a position which is closer to the lower end by a predetermined length from the upper end side when hung to zero. When inserted into the water collecting hole 10a of the eye panel 10 from below, the flange 21d contacts the lower surface of the eye panel 10,
The amount of protrusion of the perforated tube 21 toward the filtered water chamber 11 is regulated to be constant. Therefore, when the perforated pipe 21 is inserted into the water collecting hole 10a, the welding position of the flange 21d passes through the water collecting hole 10a.
This is a position where a lock nut 21e for preventing falling off from 0a can be fastened (see FIGS. 2 and 4).

As shown in FIG. 7, the filter element 22 is disposed in a substantially cylindrical shape around a cylindrical core 23 as a filter medium, for example, with a filter membrane 24 folded in a pleated shape. A pleated filter whose outer periphery is covered with a polypropylene net member 25 is used. At each end of the filtration element 22, a substantially annular end member 26 for holding a filtration membrane is provided.
Each end 23a, 23b of the core 23 protrudes outward, and the above-mentioned porous tube 21 is disposed through the core 23.

This filtration element is conventionally used for directly connecting to a water collecting hole formed in a perforated plate through a sealing member such as an O-ring in a small filtration device used in an ultrapure water production device or the like. The core 23
Since the end portions 23a and 23b project from the end member 26, it is convenient if the end portions 23a and 23b are directly attached to the water collecting holes of the perforated plate. In the case where a plurality of the cores 22 are connected and used, on the contrary, the protruding ends 23a,
23b hinders connection. However, in the filter member 2 to which the present invention is applied, by using core sockets 27 to 29 described later, the seal members provided in advance at the ends 23a and 23b of the core 23 are utilized, and the condensate purification system is used. Focusing on the fact that it is possible to simplify a sealing mechanism between the filtration elements of the type conventionally used in the filtration device, which is necessary when connecting filtration elements of the type in which the ends of the core do not protrude. , 23
The filter element 22 of the type in which b protrudes is used.

That is, as shown in FIG. 5, an O-ring 23c as a sealing member is provided at an end 23a on the upper end side of the core 23 in the filter element 22 arranged on the upper side.
, The upper core socket 27 is mounted, and the lower end 23b of the core 23 of the filtration element 22 disposed on the lower side is provided with a porous tube at the center as shown in FIG. A lower core socket 28 having an insertion hole into which the lower bolt 21c of the first 21 is inserted is mounted with an O-ring 23c as a seal member interposed therebetween. Also, the lower end 23b of the filtration element 22 disposed on the upper side.
As shown in FIG. 2, an O-ring (not shown) is interposed between the filter element 22 and the end 23a on the upper end side of the filter element 22 disposed on the lower side. A connection core socket 29 is provided for connection.

More specifically, the upper core socket 27 is formed in a substantially cup-shaped cross section as a whole, as shown in FIGS. 8 and 9, and has a cylindrical portion 27a and a cylindrical throttle portion 27b.
And both are integrally formed. Tube part 2
7a is the core 2 protruding from the end member 26.
3 is formed on the peripheral surface of the end 23a with a size that can be fitted via an O-ring 23c (see FIG. 5). Tube part 27a
Is formed at one end thereof with an annular end wall 27c formed to protrude toward the axis of the cylindrical portion 27a. The cylindrical throttle portion 27b is formed so as to protrude from the inner peripheral edge of the annular end wall 27c in a direction opposite to the cylindrical portion 27a. The cylindrical narrowed portion 27b is formed with an inner diameter that is equal to or larger than the outer diameter of the porous tube 21 that is a shaft member, but smaller than the cylindrical portion 27a.

As described above, in the upper core socket 27, the cylindrical throttle portion 27b is formed integrally with the cylindrical portion 27a, and the annular end wall 27c is provided between the two. As a result, high strength can be obtained even with the same thickness, as compared with the case where all are formed in a cylindrical shape having the same diameter.

A thick portion 27e formed for reinforcement is formed at the tip of the cylindrical narrow portion 27b, and an annular O-ring 27d as a sealing member is mounted on the inner peripheral surface of the thick portion 27e. ing. The O-ring 27d is formed with an inner diameter capable of closely adhering to the periphery of the porous tube 21.
The gap between the cylindrical throttle portion 27b and the porous tube 21 can be sealed.

The lower core socket 28 is shown in FIGS.
As shown in FIG. 1, a tubular portion 28a and a tubular throttle portion 28b similar to the above-mentioned upper core socket 27 are provided, and an annular end wall 28c is formed between them. Further, an annular bottom plate 28e having an insertion hole 28d in which the lower bolt 21c of the perforated tube 21 is inserted at a substantially central portion is integrally attached to a tip end of the cylindrical narrowed portion 28b by welding. In the lower core socket 28, the cylindrical portion 28a is fitted to the peripheral surface of the lower end 23b of the core 23 via an O-ring 23c. At this time, the lower bolt 21c of the perforated tube 21 is
It is inserted through the insertion hole 28d of the annular bottom plate 28e and protrudes downward (see FIG. 6). However, in order to prevent untreated water from leaking from the insertion hole 28d, a gasket 28 for sealing is provided around the lower bolt 21c sandwiching the annular bottom plate 28e.
f, 28 g are loaded.

Below the lower core socket 28 of the lower bolt 21c, a lower nut 30 as a lower end position regulating member for regulating the lower end position of the filtration element 22 is disposed via a washer 30a (see FIGS. 2 and 3). 6).
Of course, this lower nut 30 is
Any number can be provided as long as it can prevent the downward movement of the device, and the number of the devices is not limited at all as long as the function can be performed.

The lower bolt 21c is engaged with the flat bar 31 by inserting the lower bolt 21c into a connection hole formed in the flat bar 31 below the lower nut 30. The two lock nuts 32 and 33, which also function to regulate the lower end position of the filter element 22 together with the lower nut 30 as described above, are screwed together. In addition, the flat bar 31 is formed in a lattice shape, and has a structure in which the connection holes are formed at predetermined intervals in front, rear, left, and right,
The lower bolts 21c of the perforated pipes 21 in the filter members 2 arranged in the tower main body 1 are connected to each other so as to maintain a constant interval between the adjacent filter members 2.

The connecting core socket 29 has such a shape that two upper core sockets 27 or lower core sockets 28 each formed in a substantially cup shape are connected to each other with their cylindrical narrowed portions facing each other. I have. That is, as shown in FIG. 12 and FIG.
First, two lower ends 23b of the filtration element 22 arranged on the upper side and two upper ends 23a of the upper end of the filtration element 22 arranged on the lower side are formed to fit each other. It has cylindrical portions 29a and 29b. The inner ends of the cylindrical portions 29a and 29b have annular end walls 29c and 29d protruding in the axial direction, respectively. And
Between the inner peripheral edges of the two annular end walls 29c and 29d, the outer diameter of the porous tube 21 as the shaft member is equal to or larger than the outer diameter.
a, a cylindrical throttle 2 formed with an inner diameter smaller than 29b
9e are formed. In addition, each cylinder part 29a, 29b,
Each of the annular end walls 29c and 29d and the cylindrical throttle portion 29e are integrally formed, and have the same thickness as the upper core socket 27 and the lower core socket 28 as compared with the case where they are formed in a simple cylindrical shape. It is a structure that can obtain high strength. For this reason, each core part 23a, 29b
The end portions 23a and 23b are press-fitted with a thinner thickness, and sufficient strength to withstand the force can be obtained.

Each of the cylindrical portions 29a and 29b has an end 23b on the lower end side of the core 23 of the one filtration element 22 and an end 23a on the upper end side of the core 23 of the other filtration element 22, respectively. Fitted via O-rings 23c, which are sealing members disposed around the ends 23a and 23b, the length from the annular end walls 29c and 29d to the peripheral wall end surfaces 29f and 29g in each of the cylindrical portions 29a and 29b. Are preferably substantially the same. Thereby, the insertion length of each end 23a, 23b into each cylinder 29a, 29b can be made equal.

That is, the formation of the annular end walls 29c and 29d contributes to increasing the strength of the connecting core socket 29 itself as described above, and also makes the adjacent core 2
3 also serves to equalize the insertion lengths of the opposed ends 23a and 23b. When such an annular end wall 29c, 29d is not provided, each of the tubular portions 29a,
Each end 23a, 23 inserted from the opposing direction into 29b
It becomes difficult to make the insertion lengths of b equal, and if one of the insertion lengths is short, wobbling may occur when it is attached to the eye panel 10, or if it is attached as it is, large vibrations may occur during processing. However, there is a risk that untreated water leaks.

As described above, the cylindrical throttle portion 29e formed between the annular end walls 29c and 29d has a diameter larger than the outer diameter of the perforated tube 21, but has a smaller inner diameter than the cylindrical portions 29a and 29b. However, it is preferable that the diameter is slightly larger than the outer diameter of the porous tube 21. Thereby, the tubular portion 29a, 29b of the connecting core socket 29 can be easily fitted to the end 23a, 23b of the core 23 of each filter element 22 by the porous tube 21 serving as a guide at the time of mounting, and The filter element 22 can be mounted substantially parallel to the porous tube 21 without bias.

The upper core socket 27, the lower core socket 28, and the connecting core socket 29 are all provided at the end 23a of the core 23 on which the O-ring is mounted.
23b is press-fitted into each of the cylindrical portions 27a, 28a, 29a, 29b with a predetermined force. Therefore, in view of strength, a metal material is preferable as a material constituting them.
From the point of rust prevention, it is more preferable to form from stainless steel. The molding means is optional, but can be formed by, for example, cold pressing. When manufacturing the connection core socket 29, it is difficult to form the connection core socket 29 only by pressing. For example, the same shape as the lower core socket 28 except for the annular bottom plate 28e is formed by pressing. And the ends of the cylindrical narrowed portions are butted together and welded to form a single unit.

The filter member 2 to which the present invention is applied
As shown in FIG. 4, when the filter element 1 is disposed in the filtration device 1, the filter element 1 is attached to the flange 21 d that contacts the lower surface of the perforated plate 10 and the core end 23 a on the upper end side of the filtration element 22. A coil spring 40 as a spring member is disposed between the upper core socket 27 and the periphery of the perforated pipe 21.

The coil spring 40 has an upper end in contact with the flange 21 d and a lower end in contact with the upper core socket 27.
From the upper core socket 27 to the lower core socket 28
All the parts up to this point are elastically urged so as to be pressed against the lower nut 30 which is the lower end position regulating member. That is, it functions so as to constantly urge each filter element 22 toward the lower nut 30 which is a lower end position regulating member. This prevents a gap from being produced between each of the core sockets 27 to 29 and the filtration element 22 due to the manufacturing tolerance of the filtration element 22 and the contraction of the filtration element 22 occurring at the beginning of water passage. And the generation of untreated water that does not pass through the filtration element 22 can be prevented.

Next, the structure of an assembling jig 100 for assembling the filter member 2 according to one embodiment of the present invention will be described with reference to FIGS. The assembling jig 100 includes a leg 110 and a gantry 120 that is installed substantially horizontally at a predetermined height. The gantry 120 includes a gantry body 120a having a predetermined length located at a central portion, a wide first gantry plate 120b provided at one end to support both ends of the gantry body 120a, And a wide second gantry plate 120c provided at an end of the gantry. The gantry main body 120a is formed of a long member having a substantially U-shaped cross section which is disposed with its open end facing upward, and a substantially cylindrical filtering element 22 mounted around the perforated tube 21 is provided by both side walls. It has a structure capable of supporting the long porous tube 21 in a horizontal state. In addition, as shown in FIG.
2 is covered with a cushion material 120e made of synthetic resin, rubber, or the like. Further, the first mounting plate 120b is provided with a support mechanism 130 for supporting one end side of the perforated tube 21, and the second mounting plate 120c
In the other end of the perforated tube 21, core sockets 27-
There is provided a pressing mechanism 140 for pressing to fit the 29.

As shown in FIGS. 14 and 15, the support mechanism 130 is provided with a substantially U-shaped notch 131a (particularly, see FIG. 15D). A support plate 131 fixed upward and disposed at an outer end of the first gantry plate 120b;
A spring holding plate 132 is provided on the inner side (closer to the gantry body 120a) than the base 1 and is provided detachably. As shown in FIG. 15B, the spring holding plate 132 also has a substantially U-shaped notch 132a as in the case of the support plate 131.
Are formed so that the opening side of the notch 132a faces downward, and when arranged in this manner, the porous tube 21 is formed in both the notch 132a and the notch 131a of the support plate 131. Are inserted into the notches 132a and 131a.

The spring holding plate 132 has fixed plates 132b, 1 protruding in the same direction at both ends in the width direction.
32c are provided, and as a whole, as shown in FIG. By disposing the fixing plates 132b and 132c such that the edges thereof abut on the surface of the support plate 131, the distance between the support plate 131 and the spring pressing plate 132 is maintained. A handle 133 is attached to the spring holding plate 132, and the handle 133 is gripped and can be attached to and detached from the first gantry plate 120b.

As shown in FIGS. 14 and 16, the pressing mechanism 140 has a jack support plate 141 provided on a second gantry plate 120c. The second gantry plate 120c and the jack support plate 141 have the structure shown in FIG.
As shown in (c) and (d), elongated holes 120d and 141a extending in the front-rear direction are respectively formed near both sides in the width direction, and the elongated holes 120d and 141a are aligned and bolts ( (Not shown), a nut is screwed into the nut, and the bolt can be used as a guide shaft to slide and adjust the fixing position of the jack support plate 141 to the second gantry plate 120c.

The jack support plate 141 has a structure shown in FIG.
As shown in FIG. 7, a shallow, substantially U-shaped notch 141a cut out from the upper edge is formed, and a hydraulic jack 150 serving as a pressing means is formed in the notch 141a.
Of the cylinder 151 is placed and held. Then, after adjusting the jack support plate 141 back and forth according to the size of the jack 150 to be used, use the bolts and nuts to set the second gantry plate 1 at an appropriate position.
20c.

The cylinder 1 of the jack 150 serving as a pressing means is provided at the outer end of the second gantry plate 120c.
A jack mounting plate 142 to which the base of the jack 51 is fixed is provided, and the ram 152 of the jack 150 is
It is provided so as to expand and contract along the longitudinal direction of a, that is, in the direction away from the first gantry plate 12b. As shown in FIGS. 16 (a), (b) and (g), a substantially triangular ram connecting plate 160 is attached to the ram 152 projecting from the cylinder 151 of the jack 150, and each corner is A pressing plate 162, which is also processed into a substantially triangular shape, is disposed at a predetermined interval on the ram connecting plate 160 via a spacing angle member 161 disposed in the vicinity.

At approximately the center of the pressing plate 162, FIG.
As shown in FIG. 6H, a lower bolt 21c provided in the perforated tube 21 and a through hole 162a through which the lower nut 30 screwed to the lower bolt 21c and functioning as a lower end position regulating member is inserted are formed. I have. After inserting the lower bolt of the perforated tube 21 into the through hole 162a, the ram 15
2, the filter element 22 disposed around the perforated tube 21 is pressed by the pressing plate 162.
Is pressed in the direction of the first gantry plate 120b, and the lower end position regulating member can be mounted at a predetermined position.

Next, an embodiment relating to a method for assembling a filter member using the above-described mounting jig 100 will be described with reference to FIGS.
This will be described with reference to FIG. First, before being installed on the mounting jig 100, as shown in FIG. 17A, the coil spring 40 is removed from the other end of the porous tube 21 which is the lower end when suspended and supported in the tower main body 1. Insert until it comes into contact with the flange 21d. Next, as shown in FIG. 17 (b), in the core 23 of one of the filtration elements 22 which is arranged on the upper side when suspended and supported in the tower main body 1, the end 23a to be located on the upper side Then, the cylindrical portion 27a of the upper core socket 27 is inserted within a range that can be pushed by hand. Similarly,
One cylindrical portion 29a of the connecting core socket 29 is inserted into an end portion 23b of the filtration element 22 which is to be arranged below the core 23 within a range where the tube portion can be pushed by hand.

The filter element 22 having the upper core socket 27 and the connecting core socket 29 held at the respective ends 23a and 23b of the core 23 as described above is shown in FIG.
As shown in (c), the porous tube 21 is inserted from the other end side. Further, as shown in FIG. 17 (d), the other filtration element 22 disposed below when suspended and supported in the tower main body 1 is inserted from the other end of the porous tube 21. At this time, the end 23a of the core 23 to be arranged on the upper side of the other filtration element 22 is pushed until it is lightly inserted into the other cylindrical portion 29b of the connecting core socket 29.

As shown in FIG. 18A, the filter member 2 in which the filtration element 22 is disposed around the perforated tube 21 as described above is placed on the mounting jig 100 in a horizontal state. At this time, the flange 21d of the perforated pipe 21 is
One end of the porous tube 21 is positioned on the notch 131a so as to contact the inner surface of the base 31, and the base body 120
filter element 2 on cushion material 120e on both side walls
The outer surface of No. 2 is abutted and supported.

Next, as shown in FIG. 18 (b), the spring holding plate 132 is coiled so that the cutout portion 132a faces downward so that the porous tube 21 is housed in the cutout portion 132a. It is attached between the spring 40 and the upper core socket 27 (see FIG. 15B). Thus, even if the filtration element 22 is pressed toward the one end of the porous tube 21, the spring force of the coil spring 40 does not function. Then, the cylindrical portion 28a of the lower core socket 28 is inserted into the end 23b of the core 23 which is to be located below the other filtration element 22 within a range where the cylindrical portion 28a can be pushed by hand from the other end of the porous tube 21.

Next, as shown in FIG. 18C, the through holes 16 of the pressing plate 162 constituting the pressing mechanism 140 are formed.
2a, the lower bolt 21c of the perforated tube 21 is positioned so as to be inserted thereinto.
The lower core socket 28 is pressed by the pressing plate 162 by operating the 50 in the direction in which the ram 152 extends from the cylinder 151. At this time, the ram 152 is extended and pressed until the lower bolt 21c protrudes from the lower core socket 28 by a predetermined length, for example, as shown in FIG. As a result, the cylindrical portion 27a of the upper core socket 27, the cylindrical portions 29a and 29b of the connecting core socket 29, and the cylindrical portion 28a of the lower core socket 28
3 is firmly fitted to the end portions 23a and 23b. Then, as shown in FIG. 19B, with the lower core socket 28 being pressed by the pressing plate 162, the lower bolt 21c protruding from the through hole 162a.
After attaching the sealing gasket 28g, the lower nut 30 as a lower end position regulating member is attached via the washer 30a.

Next, as shown in FIG. 18D, the ram 152 of the jack 150 is contracted by a predetermined amount to release the pressing force, and the spring holding plate 132 is moved to the first gantry plate 1.
Remove from 20b. Thereby, the coil spring 4
A spring force of zero acts on the upper core socket 27. next,
As shown in FIG. 18E, while using the spring force of the coil spring 40, the ram 152 of the jack 150 is extended again, and
The lower bolt 21c is pressed until the amount of protrusion from the lower core socket 28 reaches a predetermined amount (x2 in FIG. 19C), and the lower nut 30 is tightened to that position to shorten the ram 152 of the jack 150. To release the pressing force.

According to the assembling method of the present embodiment, when each of the core sockets 27 to 29 is fitted to each of the ends 23 a and 23 b of the core 23 of the filtration element 22, the spring holding plate 132 is used to set the spring of the coil spring. The force can be prevented from functioning, and the pressing can be performed in the direction in which the spring pressing plate 132 is arranged by the jack 150 serving as the pressing means. Therefore, each of the core sockets 27 to 29 can be securely fitted to each of the ends 23a and 23b of the core 23 of the filtration element 22. On the other hand, after each of the core sockets 27 to 29 has been fitted to each of the ends 23a and 23b of the core 23, the spring holding plate 132 can be removed and pushed in while using the spring of the coil spring 40. Lower nut 3 which is a regulating member
0 can be securely attached to the intended mounting position.

The pressing means is not limited as long as it can press the filter element 22 with a predetermined pressing force. However, the pressing means can apply a constant pressure like a hydraulic jack 150. Preferably, the members can be more securely fitted by applying a constant pressure. In the above description, two filtration elements 22 are provided in series with the perforated tube 21. However, the present invention is naturally applicable to three or more types or a type using only one. is there.

[0046]

According to the present invention, while the core socket can be pressed against the filtration element and fitted together without applying the spring force of the coil spring, the core socket is fitted. Thereafter, the core socket can be pressed with the spring force of the coil spring being used. Therefore, while using a cartridge-type filtration element in which the end of the core protrudes from the end member, the filter member having a structure that can be pressed against the lower end position regulating member by a coil spring has a simple structure, And the core socket can be securely fitted and assembled. As a result, even in this type of filter element, the function of the coil spring that absorbs the manufacturing tolerance of the filter element and the amount of contraction during passage of water can be effectively exerted.

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of an overall structure of a filtration device using a filter member manufactured using an assembling method and an assembling jig of the present invention.

FIG. 2 is a view showing an example of a filter member manufactured using the assembling method and the assembling jig of the present invention.

FIG. 3 is a view showing a perforated tube used in the filter member.

FIG. 4 is an enlarged view of a portion A in FIG. 2;

FIG. 5 is an enlarged view of a portion C in FIG. 4;

FIG. 6 is an enlarged view of a portion B in FIG. 2;

FIG. 7 is a perspective view showing a part of a filtration element used in the filter member.

FIG. 8 is a perspective view showing an example of an upper core socket used in the filter member.

FIG. 9 is a cross-sectional view illustrating an example of an upper core socket used in the filter member.

FIG. 10 is a perspective view showing an example of a lower core socket used in the filter member.

FIG. 11 is a sectional view showing an example of a lower core socket used in the filter member.

FIG. 12 is a perspective view showing an example of a connecting core socket used in the filter member.

FIG. 13 is a cross-sectional view illustrating an example of a connection core socket used in the filter member.

FIG. 14 is a plan view for explaining an assembly jig according to one embodiment of the present invention.

15A and 15B are diagrams showing a support mechanism of the assembly jig according to the embodiment, wherein FIG. 15A is an enlarged view of a portion D in FIG. 14, FIG. 14) is a view as viewed in the direction of arrows GG in (a), and (d) is a view as viewed in the direction of arrows HH in FIG. 14.

16A and 16B are diagrams showing a pressing mechanism of the assembly jig according to the embodiment, wherein FIG. 16A is an enlarged view of a portion E in FIG. 14, FIG. 16B is a view taken along the line II of FIG. ) Is a plan view of the second gantry plate, (d) is a plan view of the jack support plate, (e) is a view taken along the line JJ of (a), (f) is a rear view of the jack support plate, (g) () Is a side view of the jack, and (h) is a front view of the pressing member.

FIG. 17 is a view showing some steps of an assembling method according to one embodiment of the present invention.

FIG. 18 is a view showing another step of the assembling method according to the embodiment.

19A is an enlarged view of a portion K in FIG. 18C, and FIG.
18 is an enlarged view of an L part of FIG. 18D, and FIG. 18C is an enlarged view of an M part of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tower main body 10 Eyeboard 10a Water collecting hole 11 Filtration water chamber 12 Element chamber 2 Filter member 21 Perforated pipe 22 Filtration element 27 Upper core socket 28 Lower core socket 29 Connecting core socket 30 Lower nut 40 Coil spring 100 Assembly jig 120 Stand 130 Supporting mechanism 132 Spring holding plate 140 Pressing mechanism 150 Jack 162 Pressing plate

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yoshiya Kato 1-2-8 Shinsuna, Koto-ku, Tokyo Organo Corporation F-term (reference) 4D006 GA02 HA74 HA91 HA93 HA95 JA62A JB11 KA64 MA03 PA01 PB06 PB07 PB08 PC31

Claims (3)

[Claims] 1. A method for assembling a filter member which is suspended and supported through a water collecting hole of a face plate provided in a tower main body, wherein one end of the filter member is inserted into the water collecting hole. To the perforated tube having a flange portion near one end that functions as a stopper that regulates the amount of protrusion toward the filtered water chamber, from the other end, until the coil spring of a predetermined length contacts the flange portion. Inserting the cartridge-type filtration element formed in a substantially cylindrical shape from the other end side of the perforated tube; and preventing a spring force of the coil spring from acting on the filtration element by a spring holding plate. After holding
A lower end position regulating member is attached to the other end of the perforated tube while pressing the filtration element against the spring holding plate, and the end of the core protruding from the filtration element is connected to the perforated tube in any of the above steps. A step of fitting to a core socket disposed around the periphery of the spring, removing the spring pressing plate, and using a coil spring to apply a spring force for resiliently urging the filter element toward the lower end position regulating member. Pressing the filter element against the coil spring in a direction against the force, and arranging the lower end position regulating member at a predetermined mounting position. 2. A step of arranging a plurality of the filtration elements in series along the perforated pipe via a connection core socket before the step of pressing the filtration elements against the spring holding plate in a direction of pressing the filtration elements. The method for assembling a filter member according to claim 1, wherein 3. When the one end side is inserted into the water collecting hole of the eye panel provided in the tower main body, it abuts on the lower surface of the eye panel and functions as a stopper for restricting the amount of projection to the filtered water chamber side. A perforated tube having a flange portion near one end; a cartridge-shaped filtration element formed in a substantially cylindrical shape, which is mounted around the perforated tube; and a lower portion of the perforated plate, mounted on the other end of the perforated tube A lower end position regulating member that regulates a lower end position when the filtration element is arranged in the element chamber, and is mounted between the flange portion of the perforated pipe and one end of the filtration element, and the filtration element is attached to the lower end position regulation member. An assembling jig used for assembling a filter member having a coil spring that urges toward the base, a gantry supporting the porous tube in a horizontal state, and a periphery of the porous tube laid horizontally on the gantry. For the inserted filtration element, if necessary during the assembling process, in order to retain the spring force of the coil spring without functioning, a spring pressing plate interposed between the coil spring and the filtration element, Used when the lower end position regulating member is attached to a predetermined position of the perforated pipe, and when the spring holding plate is interposed between the coil spring and the filtering element, the spring holding plate is pressed against the spring holding plate. When the spring force of the coil spring is functioning without interposing a plate, the coil spring is provided with a pressing means capable of pressing the filter element in a direction in which the filter element is pressed. jig.