JP2009092239A - Joint structure and installation structure of filtration film module using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint structure capable of miniaturizing a filter, and an installation structure capable of adjusting even the height by supporting a filtration film module. <P>SOLUTION: This joint structure 1 is provided for connecting a pipe 2 and a pipe 3, and comprises a box nut 4 out-fitted to the pipe 2 and rotatably locked by abutting on a projection part 2a arranged on an outer peripheral surface of the pipe 2, a joint member 6 abutting on one end surface 6a by interposing an O ring 5 in an end surface 2b of the pipe 2, arranging a male screw part 6b threadedly engageable with a female screw part 4a arranged on an inner peripheral surface of the box nut 4 on the outer peripheral surface and inserting the pipe 3 from the other end part, a box nut 7 out-fitted to the other end part of the joint member 6 and the pipe 3 and arranging a female screw part 7a threadedly engageable with a male screw part 6c arranged on the outer peripheral surface of the other end part of the joint member 6 on the inner peripheral surface, and a seal member out-fitted to the pipe 3, stored inside the box nut 7 and sealing by abutting on an outer peripheral surface 3a of the pipe 3 and the other end surface 6d of the joint member 6. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a joint structure for connecting pipes to each other and a structure for installing a filtration membrane module using the joint structure.

  Conventionally, as a joint structure for connecting pipes of a filtration membrane module, a branch pipe of a header component and a filtration membrane module are predetermined as described in FIG. 2 of Japanese Patent Laid-Open No. 2003-334429 (Patent Document 1). There are those connected by a flexible expansion joint that can be flexibly connected with a certain degree of freedom.

JP 2003-334429 A

  However, in the flexible expansion joint as described in Patent Document 1 described above, when the filtration membrane module is replaced, the straight line of the branch pipe of the header pipe until the pipe on the filtration membrane module side is completely pulled out from the tubular body of the flexible expansion joint. Therefore, there is a problem that the height of the gantry for supporting the filtration membrane module is increased, and the size of the filtration device is increased.

  In addition, a support member for supporting the filtration membrane module at a predetermined height is separately required, and usually a structure for supporting the lower surface of the lower cap of the filtration membrane module with a separately prepared support member is required.

  The present invention solves the above-mentioned problems, and an object of the present invention is to provide a frame that can flexibly connect a branch pipe of a header pipe and a filtration membrane module with a predetermined degree of freedom and supports the filtration membrane module. A fitting structure that can reduce the height and thereby reduce the size of the filtration device, and further install a filtration membrane module that supports the filtration membrane module and adjusts the height through the joint structure. It is to be provided.

  A first structure of a joint structure according to the present invention for achieving the above object is a joint structure for connecting a first pipe and a second pipe, and is externally attached to the first pipe. A first cap nut that abuts against a protrusion provided on the outer peripheral surface of the first pipe and is rotatably locked; and an end face with a first seal member interposed between end faces of the first pipe. And a male screw portion that can be screwed into a female screw portion provided on the inner peripheral surface of the first cap nut is provided on the outer peripheral surface, and the second pipe is inserted from the other end portion. And a female threaded portion that is externally fitted to the other end of the joint member and the second pipe and that can be screwed into a male threaded portion provided on the outer peripheral surface of the other end of the joint member. A second cap nut provided on the peripheral surface, and the second cap nut is mounted on the second pipe and is housed inside the second cap nut; And having a second seal member for sealing contact with the other end face of the joint member and the outer peripheral surface of the second pipe.

  The second structure of the joint structure according to the present invention is a joint structure for connecting the first pipe and the second pipe, and is externally mounted on the first pipe and the first pipe A cap nut that abuts on a protrusion provided on the outer peripheral surface and is rotatably locked, and one end surface of the cap nut is in contact with an end surface of the first pipe with a first seal member interposed therebetween. A joint member in which a male screw part that can be screwed into a female screw part provided on the inner peripheral surface of the inner peripheral surface is provided on the outer peripheral surface, and the second pipe is inserted from the other end, and an inner periphery of the joint member And a second sealing member that contacts and seals the surface and the outer peripheral surface of the second pipe.

  Moreover, the 1st structure of the installation structure of the filtration membrane module which concerns on this invention is the said 1st piping branched from the said 2nd piping provided in the cap of the filtration membrane module, and said 1st piping. And connected by a second joint structure.

  Further, a second configuration of the installation structure of the filtration membrane module according to the present invention is the cap of the filtration membrane module, wherein the upright filtration membrane module is attached to the horizontally arranged header pipe in the first configuration. Is a lower cap, and a pedestal member fixed or locked to the joint member is provided with a height adjusting member capable of adjusting a separation distance between the pedestal member and the lower cap of the filtration membrane module. The height of the filtration membrane module is adjusted by a height adjusting member.

  Further, a third configuration of the installation structure of the filtration membrane module according to the present invention is the above-described second configuration, wherein the height adjusting member is configured by a bolt member screwed into a screw hole provided in the pedestal member. And adjusting the height of the filtration membrane module by bringing the tip of the bolt member into contact with the lower surface of the lower cap of the filtration membrane module and changing the protruding length of the bolt member from the pedestal member. Features.

  According to a fourth configuration of the installation structure of the filtration membrane module according to the present invention, in the second configuration, the height adjusting member is screwed into a bolt member inserted through a through hole provided in the base member. The nut is configured to support the pedestal member, the tip of the bolt member is brought into contact with the lower surface of the lower cap of the filtration membrane module, and the protruding length of the bolt member from the pedestal member is changed to perform the filtration. The height of the membrane module is adjusted.

  According to the first configuration of the joint structure according to the present invention, the second cap nut and the second seal member housed in the second cap nut are fitted on the outer peripheral surface of the second pipe. In addition, the second pipe is inserted into the joint member, and the female thread portion provided on the inner peripheral surface of the second cap nut is provided on the outer peripheral surface of the joint member on the side where the second pipe is inserted. And an end face on the side where the second pipe of the joint member is inserted by the second seal member housed inside the second cap nut. It is possible to seal against the contact. By loosening the second cap nut, the second pipe can freely move in the axial direction inside the joint member.

  A female thread portion provided on the inner peripheral surface of the first cap nut while abutting the end surface of the joint member connected to the second pipe with the end face of the first pipe with the first seal member interposed Can be connected to the first pipe and the second pipe via the joint member by screwing and fastening to the male thread portion provided on the outer peripheral surface of the joint member on the first pipe side.

  By loosening the first cap nut, the joint member can be removed from the first pipe in a direction perpendicular to the axial direction without moving in the axial direction, and is provided on the inner peripheral surface of the first cap nut. It is only necessary to secure an extremely short linear length in the axial direction to such an extent that the threaded engagement between the female thread portion and the male thread portion provided on the outer peripheral surface of the joint member on the first cap nut side can be released. The extra space for mounting / removing can be made extremely small.

  According to the second configuration of the joint structure according to the present invention, the second seal member is attached to the outer peripheral surface of the second pipe, the second pipe is inserted into the joint member, and the second pipe is inserted. This seal member can be brought into contact with the inner peripheral surface of the joint member and the outer peripheral surface of the second pipe for sealing. The second pipe can freely move in the axial direction inside the joint member through the second seal member.

  A female thread portion provided on the inner peripheral surface of the first cap nut while abutting the end surface of the joint member connected to the second pipe with the end face of the first pipe with the first seal member interposed Can be connected to the first pipe and the second pipe via the joint member by screwing and fastening to the male thread portion provided on the outer peripheral surface of the joint member on the first pipe side.

  Since the joint member has a sleeve structure, the second pipe inserted in the joint member can be moved in the axial direction, and the second pipe is a pipe provided on the upper cap of the membrane filter module. Can absorb manufacturing errors in the length direction of the membrane filter module. Moreover, after the attachment height position of the filtration membrane module is determined, the cap nut can be manually tightened using the joint member as a fixed shaft.

  Moreover, according to the 1st structure of the installation structure of the filtration membrane module which concerns on this invention, the 2nd piping provided in the cap of the filtration membrane module and the 1st piping branched from the header pipe | tube are the above-mentioned coupling. By connecting by the structure, the second pipe can be moved freely in the axial direction inside the joint member by loosening the second cap nut, and the filtration membrane module can be set to a desired height. Even if there is a shift in the axial center position or a shift in the central axis angle between the first pipe and the second pipe, the axial center position shift or the axial center angle shift is allowed by the cooperation of the joint member and the second seal member. I can do it. Thereby, the branch pipe of the header pipe and the filtration membrane module can be flexibly connected with a predetermined degree of freedom.

  Further, by loosening the first cap nut, the joint member can be removed from the first pipe in the direction (horizontal direction) perpendicular to the axial direction without moving in the axial direction, A linear length that is extremely short in the axial direction to such an extent that the threaded engagement between the female thread provided on the inner peripheral surface and the male thread provided on the outer peripheral surface on the side where the second pipe of the joint member is inserted can be released. It is only necessary to secure the thickness, the margin space for attaching and removing the filtration membrane module can be extremely small, and the height of the gantry supporting the filtration membrane module can be lowered, thereby reducing the size of the filtration device. I can do it.

  Moreover, according to the 2nd structure of the installation structure of the filtration membrane module which concerns on this invention, the one end surface of a coupling member is contact | abutted to the end surface of 1st piping, and this coupling fastened and fixed with the 1st cap nut The pedestal member is fixed or locked to the member, and the filtration membrane module is supported by the height adjustment member provided on the pedestal member to adjust the height, so conventionally, a lower cap of the filtration membrane module is separately prepared However, the support member can also serve as the first pipe, joint member, pedestal member, and height adjustment member, and the number of parts can be reduced and the filter membrane can be simplified. It can be a module installation structure.

  Further, by loosening the second cap nut, the second pipe can move freely in the axial direction in the joint member, and the height adjustment member allows a separation distance between the base member and the lower cap of the membrane filter module. To adjust the filtration membrane module to a desired height.

  Moreover, according to the 3rd, 4th structure of the installation structure of the filtration membrane module which concerns on this invention, the protrusion length from the base member of the volt | bolt member which a front-end | tip part contacts the lower surface of the lower cap of a filtration membrane module is changed. Thus, the height of the filtration membrane module can be easily adjusted with a simple configuration.

  An embodiment of a joint structure according to the present invention and an installation structure of a filtration membrane module using the same will be described specifically with reference to the drawings. FIG. 1 is a five-sided view showing the configuration of the first embodiment of the joint structure according to the present invention, and FIGS. 2 and 3 are cross-sectional explanatory views of the joint structure of the first embodiment and the installation structure of the filtration membrane module using the joint structure. FIG. 4 is a diagram for explaining a configuration in which the lower cap of the filtration membrane module is received and supported by a gantry, and FIGS. 5 and 6 are diagrams for explaining each configuration of the height adjustment member of the filtration membrane module. .

  First, the structure of 1st Embodiment of the joint structure based on this invention and the installation structure of a filtration membrane module using the same using FIG. 1 ~ FIG. 6 is demonstrated. In FIG. 1 to FIG. 6, reference numeral 1 denotes a joint structure for connecting pipes 2 and 3. The joint structure is externally attached to the pipe 2 and is in contact with a protrusion 2 a provided on the outer peripheral surface of the pipe 2 so as to be freely rotatable. The cap nut 4 to be stopped and the end surface 2b of the pipe 2 are brought into contact with the end surface 6a with an O-ring 5 serving as a seal member interposed therebetween, and are screwed into the female screw portion 4a provided on the inner peripheral surface of the cap nut 4. A joint member 6 in which a male screw portion 6b that can be combined is provided on the outer peripheral surface and the pipe 3 is inserted from the other end, and the other end of the joint member 6 and the pipe 3 are installed and the joint member 6 A female screw portion 7 a that can be screwed into a male screw portion 6 c provided on the outer peripheral surface of the other end portion of the other end portion is externally attached to the cap nut 7 provided on the inner peripheral surface and the pipe 3, and inside the bag nut 7. A seal member 8 or the like that is accommodated and seals against the outer peripheral surface 3a of the pipe 3 and the other end surface 6d of the joint member 6 is sealed. It is constructed by.

  In this embodiment, as shown in FIGS. 2 and 3, the pipe 3 provided on the upper cap 10 of the filtration membrane module 9 and the pipe 3 provided on the lower cap 13 as shown in FIGS. 4 to 6. 1 shows an example of a joint structure 1 that connects a pipe 2 branched from various header pipes 17 via a joint member 6. In the present embodiment, as shown in FIGS. 2 and 3, an annular sliding member 11, a split ring 12, and an annular seal member 8 that are sheathed on the pipe 3 are accommodated inside the cap nut 7. Yes.

  4 to 6 show a joint structure 1 in which a pipe 3 provided on a lower cap 13 of a filtration membrane module 9 and a pipe 2 branched from a header pipe 17 arranged horizontally are connected through a joint member 6. It is an example of the installation structure of the filtration module using it. In the embodiment shown in FIG. 4, the weight of the filtration membrane module 9 erected and attached to the header pipe 17 via the pipe 2 is deposited on the mount 18 with the lower cap 13, and the joint member 6 is provided on the lower cap 13. An example of a joint structure 1 for connecting between a pipe 3 and a pipe 2 branched from various header pipes 17 via joint members 6 and an installation structure for a filtration module using the joint structure 1 is shown.

  In the embodiment shown in FIG. 5, the distance between the base member 14 and the lower cap 13 of the filtration membrane module 9 can be adjusted to the base member 14 that is integrally fixed to the central constricted portion of the joint member 6. A height adjusting member 15 is provided, and the height of the filtration membrane module 9 can be adjusted by the height adjusting member 15. FIGS. 5A and 5B show a state in which the height of the filtration membrane module 9 is changed by the height adjusting member 15.

  The height adjusting member 15 shown in FIG. 5 is constituted by a nut 16 that is screwed into a bolt member 15a inserted through a through hole 14a provided in the pedestal member 14 and supports both surfaces of the pedestal member 14. The tip portion 15b is brought into contact with the lower surface of the lower cap 13 of the filtration membrane module 9, and the height of the filtration membrane module 9 can be adjusted by changing the protruding length L of the bolt member 15a from the base member 14. .

  In the embodiment shown in FIG. 6, the joint member 6 and the pair of pedestal members 14 are configured separately, and an example of a configuration when retrofitted is shown. The pair of pedestal members 14 have a central constricted portion of the joint member 6. Cut-out groove portions 14b that can be fitted are formed, and the respective cut-out groove portions 14b are arranged in a staggered position so as to overlap each other, and the through-holes 14a provided in the upper base member 14 shown in FIG. The bolt member 15a is inserted, and the bolt member 15a is screwed into a screw hole 14c1 of a nut portion 14c provided by welding to the lower base member 14. And the front-end | tip part 15b of the bolt member 15a is contact | abutted to the lower surface of the lower cap 13 of the membrane filter module 9, and the protrusion length L from the base member 14 of this bolt member 15a is changed, and the height of the membrane filter module 9 is changed. Adjustments can be made.

  A screw hole is directly formed in the pedestal member 14, and a bolt member 15a is screwed into the screw hole so that a front end portion 15b of the bolt member 15a is brought into contact with the lower surface of the lower cap 13 of the membrane filter module 9. The protruding length L of the member 15a from the base member 14 may be changed to adjust the height of the filtration membrane module 9.

  According to the above configuration, the cap nut 7 and the seal member 8 accommodated in the cap nut 7 are fitted to the outer peripheral surface 3a of the pipe 3, and the pipe 3 is inserted into the joint member 6, The female screw portion 7 a provided on the inner peripheral surface of the cap nut 7 is screwed and fastened to the male screw portion 6 c provided on the outer peripheral surface on the side where the pipe 3 of the joint member 6 is inserted, and accommodated inside the cap nut 7. The sealed member 8 can be sealed against the outer peripheral surface 3a of the pipe 3 and the end face 6d of the joint member 6 on the side where the pipe 3 is inserted. By loosening the cap nut 7, the pipe 3 can freely move in the axial direction inside the joint member 6.

  The end surface 6a of the joint member 6 connected to the pipe 3 is brought into contact with the end surface 2b of the pipe 2 with the O-ring 5 interposed therebetween, and the female screw portion 4a provided on the inner peripheral surface of the cap nut 4 is connected to the joint member 6. The pipe 2 and the pipe 3 can be connected via the joint member 6 by screwing and fastening to the male screw portion 6b provided on the outer peripheral surface of the pipe 2 side.

  By loosening the cap nut 4, the joint member 6 can be removed from the pipe 2 in a direction (horizontal direction) perpendicular to the axial direction without moving in the axial direction, and provided on the inner peripheral surface of the cap nut 4. It is only necessary to secure a linear length that is extremely short in the axial direction to the extent that the female screw portion 4a and the male screw portion 6b provided on the outer peripheral surface of the joint member 6 on the side of the cap nut 4 can be released. The extra space for mounting / removing can be made extremely small.

  Further, the pipe 3 provided on the lower cap 13 of the filtration membrane module 9 and the pipe 2 branched from the header pipe 17 are connected by the joint structure 1 so that the cap nut 7 is loosened so that the pipe 3 is connected to the joint member 6. The filtration membrane module 9 can be set to a desired height, and there is a misalignment of the axial center and the misalignment of the axial center between the pipe 2 and the pipe 3. In addition, the axial center position shift and the axial center angle shift can be allowed by the cooperation of the joint member 6 and the seal member 8. As a result, the pipe 2 serving as a branch pipe of the header pipe 17 and the filtration membrane module 9 can be flexibly connected with a predetermined degree of freedom.

  Further, by loosening the cap nut 4, the joint member 6 can be removed from the pipe 2 in a direction (horizontal direction) orthogonal to the axial direction without moving in the axial direction, and provided on the inner peripheral surface of the cap nut 4. It is only necessary to secure a linear length that is extremely short in the axial direction so that the threaded engagement between the female threaded portion 4a and the male threaded portion 6b provided on the outer peripheral surface of the joint member 6 on the pipe 2 side can be released. The margin space for attaching / detaching the filtration membrane module 9 can be made extremely small, and the height of the gantry 18 that supports the filtration membrane module 9 can be lowered, thereby reducing the size of the filtration device.

  Further, one end face 6a of the joint member 6 is brought into contact with the end face 2b of the pipe 2, and the base member 14 is fixed or locked to the joint member 6 fastened and fixed by the cap nut 4. The base member The filtration membrane module 9 is supported by the height adjustment member 15 provided in 14 to adjust the height, so that conventionally, a structure in which the lower cap 13 of the filtration membrane module 9 is supported by a separately prepared support member is required. However, the supporting member can also serve as the pipe 2, the joint member 6, the base member 14, and the height adjusting member 15, thereby reducing the number of parts and providing a simple structure for installing the membrane filter module 9. I can do it.

  Further, by loosening the cap nut 7, the pipe 3 can freely move in the axial direction in the joint member 6, and the height adjustment member 15 separates the base member 14 from the lower cap 13 of the membrane filter module 9. The filtration membrane module 9 can be set to a desired height by adjusting the distance.

  In addition, the height L of the filtration membrane module 9 can be easily adjusted with a simple configuration by changing the protruding length L from the base member 14 of the bolt member 15a whose tip is in contact with the lower surface of the lower cap 13 of the filtration membrane module 9. Can be done.

  Next, the structure of 2nd Embodiment of the joint structure which concerns on this invention, and the installation structure of the filtration membrane module using the same using FIG. 7-9 is demonstrated. FIG. 7 is a five-sided view showing the configuration of the second embodiment of the joint structure according to the present invention, and FIGS. 8 and 9 are sectional explanatory views of the joint structure of the second embodiment and the installation structure of the filtration membrane module using the joint structure. FIG. In addition, what was comprised similarly to the said 1st Embodiment attaches | subjects the same code | symbol, and abbreviate | omits description.

  7 to 9, reference numeral 1 denotes a joint structure for connecting the pipes 2 and 3. The joint structure is externally attached to the pipe 2 and is in contact with a protrusion 2 a provided on the outer peripheral surface of the pipe 2 so as to be freely rotatable. The cap nut 4 to be stopped and the end surface 2b of the pipe 2 are brought into contact with the end surface 6a with an O-ring 5 serving as a seal member interposed therebetween, and are screwed into the female screw portion 4a provided on the inner peripheral surface of the cap nut 4. A male screw portion 6b that can be joined is provided on the outer peripheral surface, and the joint member 6 into which the pipe 3 is inserted from the other end, and the inner peripheral surface of the joint member 6 and the outer peripheral surface of the pipe 3 are sealed. And an O-ring 19 serving as a sealing member.

  According to the above configuration, the O-ring 19 serving as the second seal member is mounted in the groove 3b provided on the outer peripheral surface of the pipe 3, and the pipe 3 is inserted into the joint member 6 so that the O-ring 19 is Sealing can be achieved by contacting the inner peripheral surface of the joint member 6 and the outer peripheral surface of the pipe 3. The pipe 3 can freely move in the axial direction inside the joint member 6 through the O-ring 19.

  A front end surface 6a of the joint member 6 connected to the pipe 3 is brought into contact with the end face 2b of the pipe 2 with an O-ring 5 serving as a first seal member interposed therebetween, and a female provided on the inner peripheral surface of the cap nut 4 The pipes 2 and 3 can be connected via the joint member 6 by screwing and fastening the screw part 4a to the male screw part 6b provided on the outer peripheral surface of the joint member 6 on the pipe 2 side.

  Since the joint member 6 of this embodiment has a sleeve structure, the pipe 3 inserted in the joint member 6 can be moved in the axial direction (vertical direction in FIG. 8). In the case of the pipe 3 provided in the cap 10, it is possible to absorb manufacturing errors in the length direction of the filtration membrane module 9 (vertical direction in FIG. 8). In addition, after the attachment height position of the filtration membrane module 9 is determined, the cap nut 4 can be manually tightened using the joint member 6 as a fixed shaft.

  In the above embodiments, the case where the pipe 2 is an elbow pipe has been described, but the pipe 2 may be a straight pipe. Other configurations are the same as those in the first embodiment, and the same effects can be obtained.

  As an application example of the present invention, the present invention can be applied to a joint structure for connecting pipes to each other and an installation structure for a filtration membrane module using the joint structure.

It is a 5th page figure showing composition of a 1st embodiment of a joint structure concerning the present invention. It is a section explanatory view of the joint structure of a 1st embodiment, and the installation structure of the filtration membrane module using the same. It is decomposition | disassembly explanatory drawing of the installation structure of the coupling structure of 1st Embodiment, and the filtration membrane module using the same. It is a figure explaining the structure which received and supported the lower cap of the filtration membrane module with the mount frame. It is a figure explaining the structure of the height adjustment member of a filtration membrane module. It is a figure explaining the other structure of the height adjustment member of a filtration membrane module. It is a 5th page figure showing the composition of a 2nd embodiment of the joint structure concerning the present invention. It is sectional explanatory drawing of the joint structure of 2nd Embodiment, and the installation structure of the filtration membrane module using the same. It is decomposition | disassembly explanatory drawing of the installation structure of the coupling structure of 2nd Embodiment, and the filtration membrane module using the same.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Joint structure 2 ... Piping 2a ... Projection part 2b ... End surface 3 ... Piping 3a ... Outer peripheral surface 3b ... Groove part 4 ... Cap nut 4a ... Female thread part 5 ... O-ring 6 ... Joint member 6a ... End face 6b, 6c ... Male thread Part 6d ... End face 7 ... Cap nut 7a ... Female thread part 8 ... Sealing member 9 ... Filtration membrane module
10… Upper cap
11 ... Sliding member
12 ... Split ring
13… Bottom cap
14 ... Base member
14a ... through hole
14b ... Notch groove
14c ... Nut
14c1 ... Screw hole
15… Height adjustment member
15a ... Bolt member
15b ... tip
16 ... Nut
17 ... Header pipe
18 ... Stand
19 ... O-ring

Claims (6)

A joint structure for connecting the first pipe and the second pipe,
A first cap nut that is externally attached to the first pipe and is rotatably contacted with a protrusion provided on an outer peripheral surface of the first pipe;
A male threaded portion that is brought into contact with an end surface of the first pipe with a first seal member interposed therebetween and can be screwed into a female threaded portion provided on the inner peripheral surface of the first cap nut. A joint member provided on the outer peripheral surface and into which the second pipe is inserted from the other end;
A female screw portion is provided on the inner peripheral surface of the joint member, and is externally fitted to the male screw portion provided on the outer peripheral surface of the other end portion of the joint member. A second cap nut,
A second seal member that is sheathed on the second pipe and housed in the second cap nut, and seals against the outer peripheral surface of the second pipe and the other end face of the joint member;
A joint structure characterized by comprising: A joint structure for connecting the first pipe and the second pipe,
A cap nut that is externally attached to the first pipe and that is rotatably contacted with a protrusion provided on the outer peripheral surface of the first pipe;
One end surface is brought into contact with the end surface of the first pipe with a first seal member interposed therebetween, and a male screw portion that can be screwed into a female screw portion provided on the inner peripheral surface of the cap nut is formed on the outer peripheral surface. A joint member provided and the second pipe is inserted from the other end;
A second seal member that contacts and seals the inner peripheral surface of the joint member and the outer peripheral surface of the second pipe;
A joint structure characterized by comprising: The filtration characterized by connecting the said 2nd piping provided in the cap of the filtration membrane module, and the said 1st piping branched from the header pipe | tube by the joint structure of Claim 1 or Claim 2. Membrane module installation structure. A standing filtration membrane module is attached to a horizontally disposed header pipe, and the cap of the filtration membrane module is a lower cap, and the pedestal member and the filtration membrane are fixed to or locked to the joint member. 4. The filtration according to claim 3, wherein a height adjusting member capable of adjusting a separation distance from the lower cap of the module is provided, and the height of the filtration membrane module is adjusted by the height adjusting member. Membrane module installation structure. The height adjusting member is constituted by a bolt member screwed into a screw hole provided in the pedestal member, and a front end portion of the bolt member is brought into contact with a lower surface of a lower cap of the filtration membrane module, The installation structure of the filtration membrane module according to claim 4, wherein a height of the filtration membrane module is adjusted by changing a protruding length from the pedestal member. The height adjusting member is configured by a nut that is screwed into a bolt member inserted into a through hole provided in the pedestal member and supports the pedestal member, and a tip portion of the bolt member is connected to a lower cap of the filtration membrane module. 5. The filtration membrane module installation structure according to claim 4, wherein the height of the filtration membrane module is adjusted by contacting the lower surface and changing the protruding length of the bolt member from the pedestal member.

Images