JP4280548B2 - Filter element extraction jig - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a filter element extraction jig used in a filter, and more particularly to a jig for extracting a filter element from a housing in an exchangeable filter element.
[0002]
[Prior art]
The filter cartridge is generally composed of an airtight housing which is a container containing a cylindrical filter element having an internal passage, and an airtight head integrally coupled thereto, and in the case of a disposable type, the housing is a housing. And the head are integrally coupled to constitute one filter cartridge as a whole. That is, in the case of the exchange type, the head is detachably coupled to the housing by fastening means having sealing means, and the filter element to be accommodated is used by appropriately replacing the filter life.
[0003]
There are usually a wound type and a pleated type of filter element, but the pleated type has become the mainstream because the filtration area can be increased. Therefore, in the following description, the pleated type is disclosed, but it may be used for the wound type.
[0004]
The pleated filter element 10 shown in FIG. 1 (b) is laminated with a pair of porous support material sheets usually attached to both sides of a thermoplastic resin filter membrane, and then folded at both ends in a pleat shape. A substantially cylindrical filter material 22 that is overlapped and sealed, and an inner cylinder 21 having a mesh-like through-hole 24 (not shown) supported by both the inside and outside of the cylindrical filter material and a mesh-like through-hole 25 are provided. It is comprised from the outer cylinder 23, and the upper cover part 27 and the lower cover part 28 which are welded to the upper and lower ends of the filter medium 22, and airtightly seal a filter medium.
[0005]
As shown in FIGS. 1A and 1B, in a filtration apparatus in which a filter element 10 serving as a filtration material is housed in a housing 12 and a head 11 is mounted, a processing liquid inlet is usually provided in the housing. Provided in the lower part or the head, the filtrate outlet is usually provided in the lower part or the head of the housing, and in some cases, the head is provided with a gas vent port 15 for removing bubbles generated from the gas dissolved in the treatment liquid or the filtrate. There is also.
[0006]
In FIG. 1B or FIG. 3A, the processing liquid is introduced between the filter element 10 and the housing 12 from the processing liquid inlet 13 provided in the head 11, and the filter medium 22 is passed through the porous outer cylinder 23. At this time, foreign matter or solid particles are trapped on the outer surface of the filter medium 22, and the filtrate that has passed through the filter medium 22 passes through the filtrate outlet 25 from the internal passage of the porous inner cylinder 21 and is supplied to the head 11. It flows out to the discharge port 14.
A step portion 26 is formed in the vicinity of the outlet of the filtrate outlet 25 to be hooked at the time of extraction.
[0007]
There are two types of filters that use cartridges: a type in which the cartridge to be used is integral with the housing portion, and a type in which the cartridge can be replaced.
The present invention provides a filter element replacement jig in a replaceable cartridge filter.
[0008]
[Problems to be solved by the invention]
For exchanging the filter element in the exchangeable cartridge filter, the head portion 11 of the housing 12 is usually removed as shown in FIG. 3A, for example, and the protrusion around the filtrate outlet 25 outside the element or the outlet Pull the filter element 10 upward by holding the protrusion directly by hand or through a glove. However, it is difficult to handle if there is no protrusion or small size and the catch is insufficient, and if the volume of impurities or dirt removed from the filtrate is in close contact with the outer periphery of the element This extraction operation was not easy because it was very difficult to handle and the load on the filter element often ranged from 1 kg to several kg.
[0009]
And since the extraction work cannot be performed easily, there is a possibility of touching not only the filter element part but also the housing part with a finger, which is touched by hand when ultra-precise filtration is required or when handling chemicals. Contamination in the water could cause filtrate contamination and hand rash.
[0010]
Therefore, a method for taking out a used filter from the filter case described in Japanese Patent Application Laid-Open No. 8-309112 has been invented. As a method of removing a used filter from the filter case according to the present invention, at least two or more drawer handles are attached to the upper edge portion of the exterior coating (in the above example, the porous outer cylinder), and the filter is taken out from the case. , A method for taking out a used filter from a filter case characterized by pulling up the handle is proposed.
[0011]
However, “attaching two or more pull-out handles” to the outer cylinder portion of the filter cartridge by this method is difficult to insert into the assembly or housing, and often hinders assembly. And, when pulling out, the balance of force in the pulling direction becomes worse, especially when the element in the housing and the flow path are narrow or there are many deposits such as dirt on the filter. there were.
[0012]
SUMMARY OF THE INVENTION An object of the present invention is to provide a filter element extraction jig that can reliably and easily extract a filter element and that does not cause contamination.
[0013]
[Means for Solving the Problems]
The present invention comprises a substantially rod-shaped member, a substantially tubular member, and an urging member that separates the two members when assembled, and at one end of one of these rod-shaped or tubular members. Provided is a filter element extraction jig having a configuration in which an enlarged diameter part or an enlarged diameter part is provided at the other end of one or the other member as a gripping part.
The extraction jig having this configuration is suitable for exchanging disposable cartridges. Therefore, since the filter element contaminated with solid matter is discarded without being reused, if the extraction jig is made of an inexpensive material such as plastic, it can be discarded together or sent to reprocessing.
[0014]
A substantially rod-shaped member, a substantially tubular member into which the member is fitted, a first receiving portion provided on the rod-shaped member, and a second receiving portion provided on the annular member, An urging member that urges the first receiving portion and the second receiving portion apart from each other, and a grip portion provided at one end of one of the rod-like member and the tubular member. the provided bulge at the other end of the rod-like member, only setting the expandable enlarged diameter portion to the other end of said tubular member, configured such that the upset is expanded the enlarged diameter portion The problem is solved by the filter element extraction jig.
[0015]
Here, it demonstrates in detail.
The jig according to the present invention has a rod-shaped member as one member and a substantially tubular member as the other member. The other end of the tubular member is provided with an enlarged diameter portion, and when both members are assembled, that is, when one member is inserted into the other member, an urging member for separating these members is incorporated and slidable at the same time. Then, an enlarged diameter portion provided at the other end of the other member is slid by sliding an enlarged diameter portion provided at the other end by operating the grip portion provided at one end of one of the rod-like or tubular members. It is the structure which expands.
[0016]
As a preferred mode, as described above, one member is a substantially rod-shaped member, and the other member is a substantially tubular member. An essentially tubular member can be used in the same manner as a substantially rod-like member as the other member.
The present invention further provides a combination of a jig and a plastic bag in which the jig of the present invention is stored in a plastic bag so that the gripping portion side is an open end.
[0017]
[Action]
The extraction operation of the filter element will be described with reference to FIG.
When removing the filter element, as shown in FIG. 3A, the filter element has a grip portion 31 formed at one end of the rod-shaped member 30 of the extraction jig constructed according to the present invention, and is opposite to the grip portion. The expanded diameter portion 32 formed at the tip (the other end) of the tubular member 50 is protruded outward from the expanded diameter portion 51 of the tubular member 50 against the restoring force of the spring 40 that is a biasing member. The expanded diameter portion 32 is pushed into the filtrate outlet 25 of the filter element 20 accommodated in the housing 12 as it is. That is, at this time, the enlarged diameter portion is reduced in diameter by the external protrusion of the enlarged diameter portion, and the outer diameter of the enlarged diameter portion and the enlarged diameter portion at this time is a dimension that passes through the inner diameter of the filtrate outlet. Therefore, it can be inserted into the filtrate outlet (see FIG. 3B). When the hand is released in this state, the expanded diameter portion 32 slides into the expanded diameter portion 51 due to the restoring force of the spring 40 described above. Accordingly, the diameter-enlarged portion of the tubular member increases in diameter and becomes larger than the diameter of the filtrate outlet 25 described above, and is pressed by the wall surface of the outlet of the filtrate outlet and the step portion 26 (FIG. 3 (c)). )reference).
In other words, as long as the enlarged diameter portion engages with the stepped portion 26 of the outlet and the enlarged diameter portion 32 is inserted into the enlarged diameter portion 51, the filter element 20 is captured. Next, when the gripping part is pulled up directly or through the finger-opening opening 34, the filter element 20 can be pulled out of the housing (see FIG. 3 (d)) and escaped from the housing. (See FIG. 4 (d) as an example)
When the gripping part is operated against the biasing force of the spring as described above or finally as necessary, the expanded diameter part of the rod-like member escapes from the enlarged diameter part of the tubular member and the outlet of the filter element The engagement with the stepped portion is released, and the extraction jig can be separated. (See FIG. 4 (d) as an example)
[0018]
It should be noted that when a large amount of sludge removal material adheres to the filter element at the time of replacement, or when the treatment liquid is a chemical liquid, it is a thin bag such as a polyethylene bag for the purpose of preventing the chemical liquid from adhering to the hand. Perform the above operation after placing the plastic bag on the extraction jig. By removing the plastic bag from the periphery of the extraction jig and covering the filter element before removing the extraction jig, the plastic bag can be covered with the used filter element without touching the processing solution or the filtrate. In this respect as well, the sampling jig of the present invention is useful. Also, since the removal is also a replacement with a new cartridge, if the bag in which the new cartridge for replacement is packaged is used for the above purpose as it is, there will be no waste.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 2 shows details of a filter element extraction jig according to an embodiment of the present invention, FIG. 2 (a) is a view in which the tip of the jig of the present invention is projected, and FIG. 1 (b) is a view in which the tip is buried. .
[0020]
The filter element extraction jig 1 is made of a substantially rod-like or tubular material having a certain degree of elasticity, and is made of a readily available plastic material such as polyethylene or polycarbonate, or a metal material having a spring property. The extraction jig 1 has a grip portion 31. The grip portion 31 is provided at one end of the rod-shaped member 30 so as to have a shape necessary for the extraction operation. The other side (the lower end in FIG. 2) of the rod-shaped member is opposite to the grip portion 31 and remains in a rod shape before assembly, and the expanded diameter portion 32 is melted at the other end of the rod-shaped member after assembly. It is formed by bonding other members. A first receiving portion 33 is integrally provided between the grip portion and the enlarged diameter portion.
[0021]
On the other hand, one end of the tubular member 50 is open, and the other end is formed with a plurality of cuts (slots) along the axial direction of the tube. The number of cuts is appropriately set to 2 to 6 depending on the material and its elasticity. When the jig 1 is inserted into the filtrate outlet 25 of the filter element, the elasticity of the notched portion, which is the enlarged diameter portion, can be easily inserted by reducing the diameter by escaping the expanded diameter portion outward. It is determined so that the diameter can be easily expanded by fitting the diameter portion into the cut portion. A second receiving portion 52 is provided between one end of the tubular member having an opening and the other end having an enlarged diameter portion.
[0022]
When assembling, the spring member 40 is inserted from the other end side of the rod-shaped member and brought into contact with the first receiving portion 33. In this state, the tubular member is inserted from the other end side of the rod-shaped member, and the spring member is brought into contact with the second receiving portion 52. Here, the enlarged diameter portion 32 is formed at the other end portion of the rod-shaped member by melting the other end portion of the rod-shaped member or inserting and welding another member. Preferably, the rod-shaped member is also made of a thin tube, and a spherical or wedge-shaped piece is inserted into the other end of the thin tube and fixed to form an expanded diameter portion. The shape and size of the jig 1 can be easily inserted into the outlet 25 after being inserted into the outlet 25 of the filter element by inserting the expanded portion of the jig 1 into the filtrate outlet 25 of the filter element. The diameter is easily expanded by returning it to the expanded diameter portion, and thereby, a locked state is established in which the stepped portion 26 is engaged. The size of the expanded diameter portion is determined so that the rod-shaped member and the tubular member are easily separated after the expanded diameter portion is provided and do not fall apart.
[0023]
The grip portion 31 of the rod-shaped member can be formed as a wide handle portion, and can be provided with a finger hooking opening 34 so that it can be easily held (a finger can be easily pulled out). In any case, the shape can be changed as required. According to molding or the like, it can be produced in large quantities.
[0024]
FIG. 5 shows an extraction jig of a cartridge exchange type filter element according to another embodiment. In this embodiment, the rod-shaped member and the tubular member are reversed from the embodiment of FIG. Although there are parts in common with FIG. 2, in order to avoid confusion, reference numerals are newly added, but detailed explanations of parts that can be understood only by illustration are omitted. That is, the gripping portion 61 is provided at one end of the tubular member 60 and the diameter-expanding portion is provided at the other end portion. As in the first embodiment, there is a first receiving portion 63 between the grip portion 61 and the enlarged diameter portion 62. On the other hand, one end portion of the rod-shaped member 70 has a cut-away structure, and an enlarged diameter portion 71 is provided at the other end portion. However, in the case of this embodiment, the enlarged diameter portion 71 can be provided from the beginning by molding or the like. However, it is necessary to provide an insertion opening in the vicinity of one end of the bar-shaped member. This insertion port also serves as a stopper for preventing the rod-shaped member from coming out of the tubular member 60 at the same time as the second receiving portion by inserting and fitting the small rod body 72 when assembled in the same manner as in the above embodiment. I am letting. Therefore, at this time, the insertion opening of the small rod body 72 of the tubular member needs to be a long hole or a window along the axis. The long hole allows the tubular member 60 and the rod-like member 70 to slide easily, and can be operated in the same manner as in the first embodiment. That is, the basic operation is exactly the same as in the first embodiment.
[0025]
The method for use with the plastic bag of the filter element extraction jig of the present invention will now be described.
Similarly to FIG. 3, it is assumed that the head 11 of the housing 12 accommodating the filter element 10 is first removed as shown in FIG. The filter element 10 in the same state is shown in FIG. The plastic bag B (shown in phantom lines in FIG. 4) is placed on the extraction jig while the extraction jig 1 is held by hand. As shown in FIG. 4A, the expanded diameter portion 32 of the extraction jig 1 is inserted into the filtrate outlet 25 of the filter element together with the plastic bag in the direction indicated by the arrow (see FIG. 4B). When the hand is released in this state, the expanded diameter portion 32 is drawn into the expanded diameter portion 51 and the expanded diameter portion is expanded. At this time, when the gripping portion 31 of the extraction jig 1 is pulled up, it moves in the direction in which the expanded diameter portion at the other end is removed, further expanding the expanded diameter portion, and the step portion 26 of the discharge port 25 (the step portion 26 is annular in this embodiment). Is fully engaged and locked. When the extraction jig is pulled up from this state, the filter element 10 is extracted from the housing 12 in accordance with the movement of the filter element extraction jig (see FIG. 4C).
[0026]
While holding the extraction jig by hand, as shown in FIG. 4C, turn the plastic bag B upside down or place the plastic bag B around the filter element as it is, and then hold the gripping portion 31 of the jig 1 and the second receiving jig. If the part 52 is pulled up in the direction approaching the spring 40, the filter element and the extraction jig are separated, and the filter element enters the plastic bag. In this way, the dirty filter element can be stored in the bag without difficulty.
[0027]
The jig of the type shown in FIG. 5 has the same function as the jig of FIG. The operation procedure is also omitted because it can be easily understood from the operation description of FIG. 2 and comparison of the drawings.
In the above example, the first receiving portion 33 or the second receiving portion 52 is provided. However, since both receive the spring 40, these are eliminated, for example, instead of the first receiving portion. Even if a spring is inserted between the lower surface of the grip portion and the upper surface (one end portion) of the tubular member instead of the second receiving portion, the same effect is obtained. In this case, both the structure and the assembly can be simplified.
[0028]
【The invention's effect】
As described above, the extraction jig according to the present invention allows the filter element to be removed from the housing with a simple operation without touching the filtration device by hand, and is easy even if the space between the housing and the filter element is narrow. Can be taken out. Further, by using the plastic bag in combination, it is possible to obtain an effect such as prevention from contamination of the filter device by hand, and conversely protecting the hand from the possibility of contamination of the hand by a processing solution such as a chemical solution. As a result, the replacement work can be performed very easily and comfortably without polluting the installation location of the filtration device.
[Brief description of the drawings]
FIG. 1 shows an overall view of a filter element using a sampling jig according to the present invention, wherein (a) is a plan view and (b) is a cross-sectional view taken along line AA.
FIGS. 2A and 2B are an assembly drawing and an operation state diagram of the extraction jig according to the present invention, wherein FIG. 2A is a state diagram when the spring is compressed, and FIG. 2B is a state diagram when the hand is released and no operation is performed; .
FIG. 3 is an operation explanatory diagram when using the sampling jig according to the present invention.
FIG. 4 is an operation explanatory view showing a relationship with a sampling jig according to the present invention when used with a plastic bag.
FIG. 5 is a diagram showing another embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Filter element extraction jig 10 Filter element 11 Head 12 Housing 15 Plastic bag 21 Porous inner cylinder 22 Filter material 23 Porous outer cylinder 25 Filtration part exit 26 Step part 30 Rod-shaped member 31 Gripping part 32 Expanded diameter part 33 1st receiving part 34 Finger opening 40 Spring portion 50 Tubular member 51 Expanded diameter portion 52 Second receiving portion

Claims (10)

A substantially rod-shaped member, a substantially tubular member into which the member is fitted, a first receiving portion provided on the rod-shaped member, and a second receiving portion provided on the annular member, An urging member that urges the first receiving portion and the second receiving portion apart from each other, and a grip portion provided at one end of one of the rod-like member and the tubular member. the provided bulge at the other end of the rod-like member, only setting the expandable enlarged diameter portion to the other end of said tubular member, configured such that the upset is expanded the enlarged diameter portion The filter element extraction jig. It said upset portion provided at the other end of the tubular member according to claim 1 filter element sampling jig according with slitting to enable enlarged the tube portion. A member that is substantially rod-shaped and has a gripping portion at one end and an enlarged diameter portion at the other end, and a member having a first receiving portion between the gripping portion and the expanded diameter portion, spacing the other member provided with a second receiving portion between one end provided at the other end with a tubular large-diameter portion whose diameter increases the tube portion, wherein the first receiving portion of the second receiving portion Filter element extraction jig comprising an urging member to be moved.   4. The filter element extraction jig according to claim 3, wherein the first receiving portion provided on one member is provided substantially perpendicularly to the one member having a rod shape.   5. The filter element extraction jig according to claim 3, wherein the second receiving portion provided on the other member is provided substantially perpendicular to the other member having a tubular shape.   6. The filter element extraction jig according to claim 3, wherein a member that urges the first receiving portion and the second receiving portion in a direction in which both the receiving portions are separated from each other is a spring.   A substantially rod-shaped member having a gripping portion at one end, and one member having a first receiving portion between the gripping portion and the other end, and a substantially tubular member at one end When the rod-shaped member is assembled to the tubular member, the other member having a diameter-expanding portion that expands the diameter of the tube portion and the second receiving portion provided between the other end and the first receiving portion. A filter element extraction jig in which an enlarging portion is provided at the other end of the one member after inserting a biasing member that separates the first receiving portion from the second receiving portion.   The filter element extraction jig according to any one of claims 1 to 7, wherein the swelled portion is formed by dissolving and softening the other end portion of the one member itself, or formed separately.   A rod-shaped or tubular member having a grip portion at one end and a first receiving portion provided between the grip portion and the other end, and a tubular or rod-shaped member having a tube portion at one end A sliding member as a whole is formed by inserting the other member provided with the second receiving portion between the other end and the one member and the other member into the other. The first member is inserted into the other end of the one member or the other member after inserting a biasing member that engages the first receiving portion and the second receiving portion so as to separate or approach each other. And a filter element extraction jig provided with a retaining or bulging portion for maintaining the engagement of the other member.   A combination comprising the filter element extraction jig according to any one of claims 1 to 9 and a plastic bag storing the extraction jig so that an upper end side of the gripping portion is opened.

Images