JPH038327Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention provides a filter assembly used for filtering water, other beverages, culture fluids, etc., particularly a filter assembly using a submicron filter, which is replaceable. This relates to a filter used for filtering pure water, high-grade beverages, culture fluids, etc.

[Prior Art] In a conventional filter with a replaceable filter assembly, as shown in the main part in FIG. A thick end plate 102 is welded and fixed, and a stainless steel cover plate (not shown) is liquid-tightly and removably fixed to the other axial end, and the filtered liquid of the filter assembly 103 is fixed. A thick plate 106 made of stainless steel called a division plate is arranged parallel to the end plate 102 inside the cylindrical wall and has a plurality of through holes 105 for liquid-tightly fitting the pedestal 104 which is the extraction part of the cylindrical wall. The peripheral edge of the end plate 102 is welded to the cylindrical wall 101 in a liquid-tight manner.
A stainless steel tubular fitting 107 for taking out the filtered liquid is welded and fixed so as to communicate with the space between the end plate 10 and the division plate 106.
2 and a stainless steel tubular fitting 1 for penetrating the division plate 106 and opening on the surface of the division plate facing the lid plate for introducing the stock solution.
08, and the metal fittings 108 are welded to the end plate 102 and the division plate 106, respectively, and fixed in a liquid-tight manner.

In the above filter, when replacing or attaching or removing the filter assembly 103, the cover plate is removed and the used filter assembly 103 is placed on the division plate 106.
The new filter assembly 103 is removed from the division plate 1 by its pedestal 104.
06 is inserted into the through hole 105, and the cover plate is fixed to the other end of the cylindrical wall 101, and the tubular fitting 107 for taking out the filtered liquid is connected to the outlet pipe via a nut. The tubular fittings 108 are connected to the stock solution supply pipes via nuts, respectively, for use.

In addition, the filter assembly 103 includes a filter membrane 109 formed in a cylindrical shape, and a pedestal 104 having a cylindrical portion to be fitted liquid-tightly into a circular hole of a division plate fixed to one axial end of the filter membrane 109. It is well known that the axial end is sealed, and the undiluted solution supplied to the outer periphery of the filter membrane 109 is filtered by the filter membrane 109, and the filtered solution is taken out from inside through the internal passage of the pedestal 104. It is.

[Problems to be solved with the invention] The above-mentioned filter is connected to the cylindrical wall 10 of the filter via the stock solution supply pipe and the tubular fitting 108 for introducing the stock solution.
1 and the filter membrane 109 of the filter assembly 103, and the liquid filtered by the filter membrane 109 of the filter assembly is transferred between the division plate 106 and the end plate 102 by the pedestal 104 of the assembly. A tubular fitting 10 for removing filtered liquid taken out into the space between
7 and the outlet pipe. Therefore, the undiluted solution is constantly in contact with the inner surface of the lid plate and the cylindrical wall, as well as the surface of the division plate facing the lid plate. (referred to as impurities) adhere to these surfaces. Therefore, in filters for pure water, high-quality beverages, culture fluids, etc., there is a strong demand for complete cleaning or sterilization of the filters in order to remove attached impurities or prevent the growth of bacteria due to impurities.

However, in the above conventional filter,
The division plate 1 is parallel to the end plate 102.
06 is fixed by welding, and there is a space surrounded by a fairly large wall between them, so impurities that were attached to the surface of the division plate during cleaning and sterilization may enter the space. Once stored, complete removal of impurities or sterilization is impossible. It is particularly difficult to clean the areas where impurities are attached, such as corners or intersections between surfaces, and it is also difficult to use cleaning tools such as cloths and brushes.

[Means to Solve the Problems] The present invention provides a filter that is composed of a plurality of detachable members and that makes it possible to clean or sterilize every corner of the filter. The purpose is to

The present invention includes a filter body, a mounting member detachably attached to the filter body via a first tubular member and an annular member, and a filter holding member detachably attached to the mounting member. The filter assembly is attached to the filter holding member and used as a filter, and when cleaning or sterilization, the filter main body, mounting member, and filter holding member are disassembled and each is completely cleaned or sterilized. It is made to be sterilized.

In the present invention, the filter main body is
One open end of a cylindrical wall whose longitudinal ends are open with a plate-like material is closed with an end plate, and a first mounting hole is opened in the thickness direction of the end plate, and mounting is performed in the mounting hole. The members are removably attached, and the lid body that is to close the other opening of the cylindrical wall is removably fixed to the cylindrical wall, and is penetrated in the thickness direction at any location of the filter body. An introduction pipe for supplying the stock solution is fixed to the second mounting hole.
The mounting member includes a first tubular member having a size to be fitted into a first mounting hole formed in the filter main body from inside the filter main body, and a first tubular member having a size that is fitted into the first mounting hole formed in the filter main body, and The first part extends radially outward and is integrally connected to the tubular member, and is connected to the tubular member.
an annular member having an abutting surface that abuts the end plate outside the opening of the mounting hole; and a second annular member that protrudes from the outer periphery of the annular member in a direction along the cylindrical wall of the filter main body. a tubular member, and a first male thread is formed on the outer periphery of the first tubular member at a position close to the annular member, and the first male thread is provided on the other end of the tubular member. The second male screw threads each have an engraved second male thread having an outer periphery that allows passage of a nut screwed onto the first male thread. Furthermore, the filter holding member has a cylindrical portion formed such that the outer peripheral surface of the substrate has at least a predetermined length in the axial direction at the free end of the second tubular member of the mounting member. 1 to be fixed in a liquid-tight fit and to fit the pedestal of the filter assembly in a liquid-tight manner;
One or more through holes are formed to pass through the filter in the thickness direction of the plate to support and hold the filter assembly.

In the filter of the present invention, the outer peripheral portion of the filter holding member is liquid-tightly fixed to the inner peripheral surface of the cylindrical portion of the second tubular member of the mounting member, and then the filter holding member is fixed to the inner peripheral surface of the cylindrical portion of the second tubular member of the mounting member. A member is inserted from the inside of the filter main body into a first mounting hole formed in the end plate so as to protrude to the outside, and a contact surface formed in the annular member is brought into contact with the end plate, and The end plate is clamped between the nut and the contact surface by the tightening force of the nut screwed onto the male thread of No. 1, and is fixed and assembled to the filter main body, and the mounting member the first of
The outlet pipe is removably fixed via a nut screwed onto a second male thread carved in the tubular member, and the stock solution supply pipe is connected to the introduction pipe fixed to the filter body. It is designed to be removably connected.

[Operation of the invention] The filter of the invention holds a pedestal provided at one end of the filter assembly by fitting it into a through hole formed in the filter holding member, and when the filter holding member is provided with a threaded rod, the filter assembly is held at one end. The threaded rod is inserted into the hole in the end pressing plate, and if necessary, a spring is interposed between the end pressing plate and the lid, and a nut is screwed to hold the filter assembly. The second part of the
Fix the lid liquid-tightly to the open end of the

When the stock solution is pumped from the stock solution supply pipe in this state, the stock solution flows into the inside of the filter body which is liquid-tightly sealed from the introduction passage inside the introduction pipe, and is supplied to the outer periphery of the filter membrane of the filter assembly. The impurities therein are filtered by the filter membrane, and the filtered liquid is led out from the internal passage of the pedestal to the space between the substrate of the filter holding member and the annular member of the mounting member, and the discharge passage of the first tubular member; It is taken out via a lead-out pipe.

The pedestal of the filter assembly is liquid-tightly fitted into the through hole provided in the substrate of the filter holding member, and the outer circumferential surface of the substrate of the holding member and the inner circumferential surface of the cylindrical portion of the second tubular member of the mounting member The space surrounded by the filter holding member and the mounting member is completely separated from the stock solution.

When replacing the filter assembly, remove the stock solution supply pipe and outlet pipe, remove the lid of the filter body, and remove the nut screwed onto the first male thread of the mounting member, and the mounting member will hold the filter. When the members are removed from the filter main body in a fixed state, the filter holding member is removed from the second tubular member of the mounting member, and the filter assembly is removed from the filter holding member, the filter main body, the mounting member, It is separated into filter holding members, and each can be individually cleaned or sterilized.

[Embodiment] FIG. 1 is a cutaway sectional view of an essential part of an embodiment of the present invention, and FIG. 2 is a side view of the essential part.

The filter body of the present invention is generally designated by 1, the mounting member is designated by 30, and the filter holding member is designated by 50.

The filter main body 1 includes a cylindrical cylindrical wall 2 which is made by bending and welding a stainless plate material into a cylindrical shape and opening both longitudinal ends thereof, and a first filter at one longitudinal end of the cylindrical wall 2. An end plate 3 made of a slightly thick stainless steel plate is welded and fixed perpendicularly to the central axis of the cylindrical wall 2 to the open end of the cylindrical wall 2 to liquid-tightly close the first open end. At the second open end 4 of the other end,
An annular edge member 5 made of stainless steel and having a rectangular cross section is welded and fixed to its outer periphery, and a lid body 6 formed of a stainless steel plate is brought into contact with the edge member 5 from the axial direction of the cylindrical wall 2. A sealing material 7 such as a rubber ring is inserted into a groove provided on the surface of the edge member 5 that contacts the lid 6, and the lid 6 is fastened to the edge member 5 using a tightening tool 8. When the lid body 6 is fixed to the edge member 5 with the fastener 8, the inside of the filter main body 1 is kept liquid-tight. Note that a first mounting hole 9 is formed in the end plate 3 so as to coincide with the central axis of the end plate 3 and pass through the end plate 3 in the thickness direction,
The first mounting hole 9 is liquid-tightly sealed by fixing a mounting member 30, which will be described later. The illustrated tightening tool 8 includes a screw rod 13 having an annular base 11 inserted into a radial groove 10 carved at every 90 degrees on the outer periphery of the edge member 5 and rotatably supported by a shaft 12; 13, and a nut 15 having an annular head 14 screwed into the radial groove 10.
3 is rotated around the shaft 12 and inserted, and the nut 15 is screwed onto the threaded rod 13 to tighten the lid body 6 to the edge member 5. In addition, 17 in the figure is an air vent valve that communicates with a through hole 18 formed through the lid body 6, and 19 is a pipe that connects the through hole 18 with a pressure gauge (not shown). It is also commonly used in pottery.

The mounting member 30 has a first tubular shape, which has an outer diameter that is loosely inserted into the first mounting hole 9 formed in the end plate 3, and has an outlet passage 31 formed therein to allow liquid to flow in the axial direction. member 32 and the tubular member 3
2, a contact surface 33 having a planar shape that contacts the end plate 3 from the inside of the filter body 1 and has an area sufficiently larger than the opening area of the mounting hole 9;
and an annular member 34 formed of a plate-like material extending radially outward of the first tubular member 32, and further provided with a filter main body on the outer periphery of the annular member 34. 2 in the direction along the cylindrical wall 2 of 1.
The tubular member 35 is formed integrally with stainless steel, or each part is formed separately and then welded. Said second tubular member 3
5 is a cylindrical portion 36 in which a cylindrical inner wall surface having at least a predetermined axial length is formed on the inner wall of the free end portion located far from the annular member 34 in the axial direction. The cylindrical portion 36 is provided with a guide hole 37 having an L-shaped bent line with one end open at its free edge.
The annular member 34 is connected to an annular portion 41 extending radially outward from the base of the first tubular member 32 and forming the abutment surface 33 and an outer peripheral edge of the annular portion 41 as shown. It has a stepped or dish-like shape comprising a cylindrical part 42 and an annular plate part 43 extending radially outward from the end of the cylindrical part 42, and has a first mounting hole at its base. Diameter portion 44 that fits tightly into 9
It is recommended to form a

A first male thread 38 is carved on the outer periphery of the first tubular member 32 and is exposed to the outside of the filter main body 1 in close proximity to the contact surface 33. A first tube member 32 formed on the end plate 3 is brought into contact with the surface of the plate 3 facing the inside of the filter main body 1.
The first nut 3 is attached to the first male thread 38 while protruding from the attachment hole 9 of the filter body 1 to the outside of the filter main body 1.
9 is screwed onto the contact surface 33 of the annular member 34.
By clamping the end plate 3 with the nuts 39, the mounting member 30 is fixed to the end plate 3 in a liquid-tight manner,
and a lead-out passage 31 formed in the first tubular member 32.
is communicated with the internal space of the filter body 1.
In the figure, 45 and 46 are packings, and 47 is a detent pin that is set up on either the end plate 3 or the annular member 34 and fitted into a hole formed in the other.

Further, on the outer periphery of the free end of the first tubular member 32 of the mounting member 30, there is provided a free end of the first nut 39, which is screwed onto the first male thread 38 on the outside of the filter main body 1. The second male thread 40 has an outer circumferential dimension that allows the passage of the thread. Even if the second male thread 40 has the same dimensions as the first male thread 38 and is carved continuously on the first male thread 38, it allows the first nut 39 to pass therethrough. However, preferably, the outer periphery of the free end of the first tubular member 32 has a smaller outer diameter than the outer periphery on which the first male thread 38 is carved, and a first The second thread has a small diameter through which the nut 39 can pass freely.
It is preferable to engrave it as a male thread 40.

The filter holding member 50 has a thick disc-shaped substrate 51 made of stainless steel, and has a base plate 51 on its outer circumferential surface.
A cylindrical wall surface 52 is formed having an outer shape that closely fits the cylindrical inner wall surface formed on the cylindrical portion 36 of the second tubular member 35 of the mounting member 30, and the pedestal 104 of the filter assembly 103 is A through hole 53 to be tightly fitted is formed to pass through the plate in the thickness direction. One or more through holes 53 may be formed, and in the illustrated embodiment, three through holes 53 are formed. The cylindrical wall surface 52 is tightly fitted to the cylindrical inner wall surface of the cylindrical portion 36 of the second tubular member 35, so that the filter mounting member 50 is attached to the mounting member 30.
The mounting member 30 is fixedly supported on the
However, in order to ensure fixed support, the cylindrical wall surface 5
A pin 54 is installed in the diametrical direction of the second tubular member 35 of the mounting member 30.
, one end is inserted into a polygonal guide hole 37 formed by opening at the free end edge of the cylindrical portion 36,
When the substrate 51 is operated to move the pin 54 along the guide hole 37, the filter holding member 5
0 is securely held and supported by the mounting member 30. The illustrated mounting member 50 has a peripheral wall 55 formed on the outer periphery of one surface of the substrate 51 facing the first tubular member 32 to extend the cylindrical wall surface 52 in the axial direction.
A packing 56 is inserted into a groove carved in the circumferential direction on the side closer to the first tubular member 32 than the planted portion of the pin 54, and the cylindrical wall surface 52 and the cylindrical shape when the pin 54 is planted are inserted. Liquid tightness with the cylindrical inner wall surface formed in the portion 36 is ensured. Reference numeral 57 in the figure is a screw rod, and the cover body 6 is attached to the surface of the substrate 51 far from the first tubular member 32 along the longitudinal direction of the filter main body 1.
The center hole of the end pressing plate 58, which is made of a substantially circular metal plate, is set up in the direction facing the screw rod 5.
After the filter assembly 103 is fitted and supported in the through hole 53 of the substrate 51 by the pedestal 104, the end pressing plate is inserted as necessary. 58 to the other end of the filter assembly 103, and tighten the nut 5.
This is an auxiliary tool that is tightened at 9 to securely hold the filter assembly 103 to the filter holding member 50. At this time, the spring 60 is attached to the filter assembly 10.
3 and the end pressing plate 58. Reference numeral 61 in the figure is a pressing portion that also serves as a locking portion for the spring 60.

The filter main body 1 has a second filter passing through the end plate 3.
A pipe-shaped introduction pipe 72 made of stainless steel and having an introduction passage 71 formed therein is liquid-tightly welded to the attachment hole 70. It communicates with the space. The second mounting hole 70 is connected to the cylindrical wall 2 of the filter main body 1.
The inlet tube may be fixed thereto.

In the filter having the above configuration, a cap nut 80 as a second nut is screwed onto the second male thread 40 of the first tubular member 32 of the mounting member 30 to removably fix the outlet pipe 81. At the same time, the introduction pipe 7
A cap nut 83 is screwed onto a male helical thread 82 carved on the outer periphery of the free end of 2 to detachably fix the stock solution supply pipe 84, and the filter main body 1 is fixed at a fixed location with support legs 85. put to use.

The attachment member 30 is a first nut 3 screwed onto a first male thread 38 formed on the first tubular member 32.
9 and the contact surface 33 formed on the annular member 34, the end plate 3 is clamped and attached to the filter main body 1, and the first mounting hole 9 is liquid-tightly closed. The cylindrical portion 36 of the second tubular member 35 of
A filter holding member 50 is attached to the cylindrical inner wall surface formed in
A cylindrical wall surface 52 formed on the outer peripheral surface of the substrate 51 is fitted and fixed in a liquid-tight manner, and the pedestal 104 of the filter assembly 103 is fitted in all the through holes 53 formed in the substrate 51 in a liquid-tight manner. and is supported by the filter holding member 50, and the lid body 6
When the undiluted solution is supplied to the filter from the undiluted solution supply pipe 84 in a state in which the second open end 4 of the cylindrical wall 2 is liquid-tightly closed, the undiluted solution passes through the introduction passage 71 in the introduction pipe 72 as indicated by the arrow. As shown, it is introduced into the filter body 1 and supplied around the filter assembly 103, impurities are filtered out by the filter membrane 109, and the filtered liquid is transferred from the pedestal 104 to the substrate 51 of the filter holding member 50. The impurities are taken out through the space between the attachment member 30 and the annular member 34 and through the lead-out passage 31 and the lead-out pipe 81 formed in the first tubular member 32 as shown by the arrow, and the impurities are retained within the cylindrical wall 2. .

When replacing the filter assembly 103, first, the cap nuts 80 and 83 are rotated to remove the outlet pipe 81 and the stock solution supply pipe 84 from the first tubular member 32 and the introduction pipe 72, respectively. Next, the first
When rotating the nut 39 to remove it from the first male thread 38, the nut 39 is removed from the second male thread 40.
When the lid 6 is opened and the first tubular member 32 of the mounting member 30 is pushed into the filter main body 1, the mounting member 30 and the filter holding member 50 are removed. The filter assembly 103 can be removed from the filter body 1 while being held or after the filter assembly 103 is removed.

After the attachment member 30 and the filter holding member 50 are taken out from the filter main body 1, they are separated and cleaned and sterilized. At this time, since the mounting member 30 and the filter holding member 50 have no visible parts on both the inner and outer surfaces thereof, cleaning and sterilization can be performed reliably.

After cleaning the filter main body 1, the cleaned and sterilized mounting member 30 and the filter holding member 50 are assembled in a liquid-tight manner, the assembled body is inserted into the filter main body 1, and the mounting member 30 The first tubular member 32 of the end plate 3
protrude from the first mounting hole 9 to the outer surface of the end plate 3,
When screwing the first nut 39 onto the first male thread 38, the first nut 39 is attached to the second male thread 4.
0 and is screwed onto the first male thread 38 to fix the mounting member 30 to the end plate 3 of the filter main body 1, so that the filter assembly 10 is attached to the filter holding member 50.
3 and tighten the lid body 6 liquid-tightly with the tightening tool 8.
If the outlet pipe 81 and the stock solution supply pipe 84 are fixed to the male threads 40 and 82 of the first tubular member 32 and the introduction pipe 72 with cap nuts 80 and 83, respectively, filtration of the stock solution can be resumed, and impurities can be removed. There is no need to worry about bacterial growth in residual or remaining impurities.

FIG. 3 shows a filter assembly 103 having a different structure in the embodiment described above, which is held by a filter holding member 50. As can be seen in FIG. 3, it is possible to use different types of filter assemblies in the same filter configuration. If the outer diameter of the pedestal 104 is different due to a different structure of the filter assembly (for example, it is not standardized), the base plate 51 of the filter holding member 50 can be removed from the annular member 34 and replaced. If the inner diameter dimension of the through hole 53 into which the pedestal 104 is liquid-tightly fitted is prepared for each type of filter assembly 103, the annular member of the filter main body 1, the mounting member 30, and the filter holding member 50 can be prepared in advance. 34 in common, the board 51
Any type of filter assembly 103 can be used in the filter by simply replacing the filter assembly 103.

Similarly, if the substrate 51 of the filter holding member 50 is prepared with a different number of through holes 53 for liquid-tightly fitting the pedestal 104, such as 1, 2, 3, etc., it is possible to It is possible to vary the number of filter assemblies to be arranged in the filter.

In the explanation of this embodiment, the filter main body, mounting member, and filter holding member are made of stainless steel, but the material is not limited to stainless steel, and of course, metals and other materials that can be cleaned and sterilized can be used. .

[Effects of the invention] The filter of the invention can be disassembled into the filter main body, the mounting member, and the filter holding member, and each can be cleaned and cleaned.
The filter can be sterilized, and the cleaned and sterilized mounting member and filter holding member can be detachably attached to the filter body.

The filter main body of the present invention includes a cylindrical wall made of a plate-shaped material and formed into a cylindrical shape with both longitudinal ends open, and a cylindrical wall formed in a cylindrical shape so as to liquid-tightly close a first open end of the cylindrical wall. The cylindrical wall includes an end plate of a plate-like body fixed to the cylindrical wall, and a lid body detachably fixed to the cylindrical wall to close the second open end of the cylindrical wall in a liquid-tight manner. A first mounting hole for fixing the mounting member is formed in the end plate so as to pass through the plate in the thickness direction of the plate, and a first mounting hole is formed at an arbitrary location in the thickness direction of the plate. An introduction pipe formed by penetrating an introduction passage communicating with the inside of the filter main body is fixed to the second attachment hole in a liquid-tight manner.

The mounting member to be fixed to the first mounting hole of the filter main body has an outlet passage formed therein to communicate with the inside of the filter main body, and has an outer peripheral surface connected to the first mounting hole. a first tubular member having a shape to be fitted; and an annular member integrally connected to the base of the tubular member so as to extend outward in the radial direction, the first tubular member in the annular member The part connected to the member has a contact surface that comes into contact with the end plate on the outside of the opening of the first mounting hole formed in the end plate, and the base of the first tubular member has a contact surface on its outer periphery. A carved first male thread is formed in the free end of the first tubular member to permit axial passage of a first nut threaded onto the first male thread. Since the second male thread is carved and formed on the outer periphery, the first tubular member can be inserted into the first tubular member of the end plate from inside the filter main body.
When the first nut is fitted into the mounting hole of the filter body and protruded to the outside of the filter main body, and the first nut is screwed into the first tubular member, the first nut passes through the second male thread and extends to the outside of the filter body. The end plate can be attached to the filter main body by screwing onto the male thread of No. 1, and by clamping the end plate between this nut and the abutment surface formed on the annular member of the attachment member. When removing the mounting member from the filter main body, simply loosen the first nut, and the first nut passes through the second male thread and is removed from the first tubular member. By pushing the tubular member into the inside of the filter, the attachment member can be taken out from inside the filter body. Since the contact surface formed on the annular member is formed so as to contact the end plate on the outside of the opening of the first mounting hole of the end plate, there is no packing on the contact surface between the annular member and the end plate. The annular member is formed with a sufficient area to accommodate the first
Together with the packing interposed in the nut, leakage of liquid from the first attachment hole can be prevented, and the attachment portion of the attachment member to the end plate can be reliably liquid-tight.

Further, on the outer periphery of the annular member of the mounting member,
A cylindrical filter that protrudes from an annular member along its cylindrical wall inside the filter main body, and has a cylindrical inner wall surface having at least a predetermined length in the axial direction on the inner circumferential surface of the free end. A second tubular member having a section is integrally formed with its free edge toward the second open end of the tubular wall and is removably secured to the annular member of the mounting member. The filter holding member is formed by forming one or more through holes through the plate-like substrate in the thickness direction into which the pedestal of the filter assembly is to be fitted in a liquid-tight manner, and having holes on the outer peripheral surface of the substrate. Since the cylindrical wall surface is formed to fluid-tightly fit into the cylindrical inner wall surface formed on the annular member, the filter holding member can be attached before or after the attachment member is attached to the filter main body. When fixing the filter holding member to a member, the cylindrical wall surface formed on the outer peripheral surface of the substrate and the second
Due to the liquid-tight fit with the cylindrical inner wall surface formed on the cylindrical portion of the tubular member, the liquid-tightness of the fixed portion of both is reliably maintained.

A mounting member is liquid-tightly fixed to the filter body, a filter holding member is liquid-tightly fixed to the mounting member, and the filter assembly is fixed to the pedestal in all of the through holes formed in the substrate of the filter holding member. When the lid body is fixed liquid-tightly to the cylindrical wall by fitting and supporting it, the outlet passage formed by passing through the first tubular member of the mounting member is connected to the annular member of the mounting member and the filter holding member. A space surrounded by a second substrate communicates only with the inside of the filter assembly through a through hole formed in the substrate, while a second
The introduction passage, which is formed inside the introduction pipe liquid-tightly fixed to the mounting hole of the filter body and communicates with the inside of the filter body, communicates only with the space outside the filter assembly inside the filter body. An outlet pipe is connected to the first tubular member through a second nut screwed onto a second male thread, and a stock solution supply pipe is connected to the introduction pipe, and the stock solution is introduced into the filter body through the introduction passage. If the liquid is supplied to the inside of the filter, the impurities contained in the stock solution will remain in the filter main body, and the filtered liquid can be taken out to the outside of the filter through the outlet passage and the outlet pipe.

In the filter of the present invention, when the filter assembly is replaced or other necessary times, the first thread is screwed onto the first male thread of the first tubular member to fix the attachment member to the filter body. When the nut is removed from the first tubular member, the attachment member and the filter holding member can be taken out from inside the filter body. In addition to the first male thread, a second male thread for fixing the lead-out pipe is carved into the first tubular member, and this second male thread is attached to the first nut. Since it has an outer peripheral shape that allows passage in the axial direction, it does not interfere with the attachment and detachment of the first nut to the first male thread.

The mounting member and filter holding member can be cleaned and sterilized by taking them out of the filter body, and the filter holding member can be removed from the mounting member, making it easy to remove the filter assembly. Even if impurities adhering to the outer surface of the annular member of the mounting member or the outer surface of the filter holding member enter the space surrounded by the annular member and the filter holding member and adhere to these inner wall surfaces during washing or cleaning. By removing the filter holding member from the mounting member, the inner wall surface can be visually cleaned, and if necessary, the inner wall surface can be thoroughly cleaned and sterilized using a cleaning tool such as a cloth or brush. Because it can be cleaned and sterilized completely, it eliminates the risk of leaving insufficiently cleaned and sterilized areas in corners that cannot be seen with the naked eye, as is the case with conventional filters. Pure water, luxury drinks,
It is possible to provide a filter suitable for filtering culture fluid and the like.

At the same time, the mounting member and filter holding member are removed from the filter body during cleaning and sterilization, so the entire inner surface of the cylindrical wall and end plate of the filter body is visually cleaned and sterilized. The filter can be cleaned and sterilized better than before.

Furthermore, since the filter holding member can be removed from the filter body as well as from the mounting member, the pedestal of the filter assembly can be removed by using a substrate with standardized shape and dimensions of the cylindrical wall formed on the outer circumferential surface. By preparing several types with different numbers of through-holes that should be fitted liquid-tightly, it is possible to share the filter body and mounting components, and configure filters with different filtration capacities. When using a filter assembly with special filtration performance or filtration capacity, even if its pedestal has a non-standardized outer diameter, the standardized cylindrical wall surface By forming a through hole with an inner diameter dimension into which the non-standardized pedestal is liquid-tightly inserted in a substrate provided with the
This can be used in the filter of the present invention.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing an embodiment of the present invention with the main parts omitted, Fig. 2 is a side view of the main parts of the mounting member, and Fig. 3 is an example of the usage situation of the embodiment. FIG. 4 is a cross-sectional view similar to FIG. 1, and FIG. 4 is a cross-sectional view of a main part of a conventional filter. The following symbols in the figure indicate the following parts, respectively.
1: Filter body, 2: Cylindrical wall, 3: End plate, 6: Lid, 30: Mounting member, 31: Outlet passage, 32: First tubular member, 33: Contact surface, 34: Annular Element,
35: second tubular member, 36: cylindrical portion, 3
7: Broken linear guide hole, 38: First male thread, 3
9: First nut, 40: Second male thread, 80:
Second nut, 50: Filter holding member, 51:
Substrate, 53: Through hole, 54: Pin, 103: Filter assembly, 104: Pedestal, 109: Filter membrane.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A cylindrical wall formed in a cylindrical body made of a plate-like material with both longitudinal ends open, and a first cylindrical wall of the cylindrical wall.
an end plate made of a plate-shaped body fixed to the cylindrical wall to liquid-tightly close a second opening end of the cylindrical wall; A filter main body consisting of a lid that is freely fixed; a first filter that is attached from the inside of the filter main body and is formed in the end plate of the filter main body so as to penetrate in the thickness direction of the filter main body; a first tubular member that is fitted into a mounting hole of the filter body, projects to the outside of the filter main body, and has an outlet passage formed therein that communicates with the inside of the filter main body; an annular member extending radially outward and integrally connected to the base, and an opening of the first attachment hole formed at a portion of the annular member that is connected to the tubular member; and a first nut screwed onto a first male thread carved on the outer periphery of the base of the first tubular member. a mounting member that is removably attached to the filter main body by liquid-tightly clamping the end plate; and a mounting member that is removably and liquid-tightly fixed to the annular member of the mounting member inside the filter main body. The filter holding member is liquid-tightly fixed to a second mounting hole formed through a plate-like body constituting the filter main body, and has an introduction passage communicating with the inside of the filter main body. an introduction tube formed through the first tubular member, and the attachment member includes a second male thread having an outer circumferential shape that allows the first nut to pass through the outer circumference of the free end of the first tubular member. is engraved on the outer periphery of the annular member, protrudes from the annular member along the cylindrical wall of the filter main body, and has an axial length of at least a predetermined length on the inner periphery of the free edge. a second tubular member having a cylindrical portion forming a cylindrical inner wall surface having a length of The filter holding member has one or more through holes through which the pedestal of the filter assembly is fitted in a liquid-tight manner, and the outer circumferential surface thereof is formed so as to fit the pedestal of the filter assembly in a liquid-tight manner. A substrate made of a plate having a cylindrical wall surface that fits liquid-tightly into the cylindrical inner wall surface formed on the second tubular member of the member, and the pedestal is inserted into the through hole of the filter holding member. The filter assembly is supported and held by the filter holding member by being fitted in a fluid-tight manner, and the filter assembly is guided to the first tubular member of the mounting member through a second nut screwed onto the second male thread. A filter characterized in that pipes are removably connected, and a stock solution supply pipe is removably connected to the introduction pipe. (2) A liquid-tight sealing material is disposed in a groove cut in the circumferential direction on the cylindrical wall surface formed on the outer circumferential surface of the substrate of the filter holding member to provide a liquid-tight seal between the cylindrical wall surface and the cylindrical inner wall surface. and a pin is planted in the radial direction at a position closer to the free end edge of the cylindrical portion than the groove, and the cylindrical portion of the second tubular member is provided with a pin for guiding the pin. The filter according to claim 1, which is a registered utility model, characterized in that a broken line-shaped guide hole is formed by opening at a free end edge of the second tubular member. (3) The filter holding member has a screw rod installed in a direction toward the second opening end of the filter main body approximately at the center of the substrate, and a hole is formed into which the screw rod is loosely inserted. An end pressing plate made of a plate-shaped body is inserted into the screw rod through the hole, and a nut is screwed into the screw rod, and a pedestal is formed in the substrate at one end in the longitudinal direction. Claims 1 or 2 of the utility model registration claim characterized in that the other end of the filter assembly fitted and supported by the filter assembly is held by the end pressing plate and the nut. filter.