JPH067808U - Cartridge filter container - Google Patents

Abstract

(57) [Summary] [Structure] It has a double structure composed of a sheath having a pressure resistant structure and a unit container 6 housed in the sheath and containing a cartridge filter 7. The unit container 6 is
The vent hole 20 is formed in the top part. The vent hole 20 is provided with a tack-shaped plug 21. The head of the stopper 21 is locked to the inner wall of the top of the unit container 6. [Effect] It is possible to easily and cleanly replace the cartridge filter. When replacing the unit container, most of the liquid remaining in the unit container can be easily withdrawn.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a filter container having a double structure incorporated in a line to remove contaminants in a liquid, and more specifically, it remains in an inner container (unit container) containing a cartridge filter. The present invention relates to a cartridge filter container structure suitable for efficiently removing liquid.

[0002]

[Prior art]

 In order to remove the contaminants and aggregates in the liquid, a method of capturing and purifying contaminant particles and aggregates with a cartridge filter is generally used. When the cartridge filter is clogged with trapped foreign substances, if it becomes a so-called clogging state, it is necessary to stop the flow once and replace the internal cartridge filter with a new one.

When the liquid to be filtered is a liquid containing an organic solvent such as paint or fuel oil, the replacement work of the cartridge filter has a risk of ignition due to leakage of the organic solvent and is irritating. There are also concerns about undesirable phenomena such as deterioration of the work environment due to the diffusion of steam and health problems to the human body. Furthermore, handling the cartridge filter and cleaning the container after use are extremely labor intensive. Therefore, improvement of these problems has been strongly desired.

In order to solve the above-mentioned problems, JP-A-1-37690 discloses a filter device in which the entire filter container is disposable and replaced. However, this filtration device is a filter container that has an expensive pressure-resistant structure and is disposable, and the filter container is heavy and difficult to handle, and economically extremely disadvantageous. Was not.

Therefore, the present inventors previously proposed a dual structure filter container in Japanese Patent Application No. 2-415252. In this product, the container has a double structure, the outer container having a pressure resistant structure is used as a permanent member, and a disposable unit container with a built-in cartridge filter is housed inside, and when replacing the filter, only the unit container is used. Was to replace.

Although the above-mentioned double-structure filter container has sufficiently achieved the intended purpose, it has the following problems. That is, in this double structure filter container, when the unit container was removed from the pedestal for replacing the filter medium, the liquid inlet and the liquid outlet of the unit container were closed by the stop valve. At this time, the void in the unit container and the inner hole of the cartridge filter are filled with the liquid before and after filtration. If they are discarded as they are, the liquid is also discarded at the same time, and the liquid to be filtered is harmful to organic solvents and the like. If it is not, a new pollution problem may occur.

[0007]

[Problems to be solved by the device]

 The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to easily and cleanly replace a cartridge filter and to remove liquid remaining in a unit container after use. In order to provide a cartridge filter container structure that can be easily pulled out.

[0008]

[Means for Solving the Problems]

 The cartridge filter container of the present invention is a cartridge filter container having a double structure consisting of a sheath having a pressure resistant structure and a unit container housed in the sheath and containing a cartridge filter. A ventilation hole is formed at the top, and the ventilation hole is provided with a tack-shaped plug, and the head of the plug is locked to the inner wall of the top of the unit container. It is a thing.

In the present invention, it is preferable that the vent hole formed at the top of the unit container is formed at a position deviated from the position where the cartridge filter incorporated therein is placed, that is, at a position where the liquid before filtration remains. .

In the present invention, the tack-shaped plug has a head inside the unit container and may be fitted in the above-mentioned vent hole or may be screwed. In addition, if the tip of the unit container is placed outside the top of the unit container and the part is crushed so that the outer part of the unit container is slightly larger than the ventilation hole and fixed, it should be handled before handling or transported. It is preferable because there is no risk of it coming loose or falling out.

To fix the plug to the vent hole, for example, a method of inserting the plug into the vent hole from the inside of the unit container and heating and softening the legs slightly protruding from the vent hole to crush them can be mentioned. . In addition, it is possible to fix the contact fitting portion by lightly fusing it with a high-frequency welder or the like, and it is also possible to fix it by a method of screwing.

In the present invention, since the unit container is premised on being disposable, a molded product of polyolefin resin such as polyethylene or polypropylene is generally used. Further, it is preferable to use the same kind of material as the unit container for the stud-shaped stopper.

The sheath having the pressure resistant structure is usually composed of a pedestal and a cap portion, and the pedestal is provided with a liquid introduction pipe and a liquid discharge pipe connected to a line pipe. Further, at the bottom of the unit container, a liquid introduction port that can be fitted into the liquid introduction pipe and a liquid discharge port that can be fitted into the liquid discharge pipe are formed. Further, each of the liquid inlet and the liquid outlet has a stop valve.

[0014]

[Action]

 For the unit container that needed to be replaced, after the filtration operation was completed, the internal pressure was returned to normal pressure, and then the top plug was pushed into the unit container while being connected to the liquid introduction pipe and the liquid discharge pipe. The air vent is opened by removing it. Next, compressed air or the like is press-fitted through the open ventilation hole, so that the liquid remaining inside the unit container is pushed out to the liquid introduction pipe or the liquid discharge pipe and is discharged to the outside of the container. The liquid inlet and the liquid outlet of the unit container removed from the pedestal are closed by a stop valve. Therefore, even if a small amount of liquid remains in the container, this liquid does not leak outside the container.

[0015]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a longitudinal sectional view showing an embodiment of a cartridge filter container having a double structure of the present invention, and FIG. 2 is a perspective view of its appearance. The arrow in FIG. 1 indicates the direction in which the liquid flows.

The metal sheath having a permanent pressure resistant structure is divided into a pedestal 1 and a cap portion 2, both of which are fastened and integrated by a coupling means such as bolts and nuts via a flange 3. It The pedestal 1 is provided with a liquid introduction pipe 4 and a liquid discharge pipe 5, and the outer sides of these pipes are directly connected to pipes of lines not shown. Notch grooves through which the liquid can pass are formed at the tips of the liquid introduction pipe 4 and the liquid discharge pipe 5.

The unit container 6 has a cartridge filter 7 built-in, a liquid inlet 8 and a liquid outlet 9 are formed in the bottom, and the liquid inlet 8 and the liquid outlet 9 are closed from the inside. Thus, the shutoff valves 10 and 11 biased by the springs 24 and 25 are provided. In use, the unit container 6 is attached to the pedestal 1 by fitting the liquid introducing pipe 4 into the liquid introducing port 8 and the liquid discharging pipe 5 into the liquid discharging port 9, respectively, and then the cap portion 2 is attached to the unit. It suffices to cover the container 6 from above and combine it with the pedestal 1. At this time, the shut-off valves 10 and 11 are pushed up by the liquid introduction pipe 4 and the liquid discharge pipe 5, respectively, so that the liquid flow path is opened.

FIG. 3 is a vertical sectional view showing an embodiment of the unit container according to the present invention, FIG. 4 is an external perspective view thereof, and FIG. 5 is a sectional view taken along line VV ′ of FIG. In this embodiment, the number of cartridge filters is three. The unit container 6 is made of a plastic molded product, and has a body 13 at the upper part for accommodating the cartridge filter 7, and a liquid at the lower part before filtration that flows out from the liquid inlet 8 (hereinafter referred to as "stock solution"). And a filtered liquid (hereinafter, referred to as “filtrate”) flowing out from the liquid outlet 9 and a base portion 15 for partitioning and partitioning with a partition wall 14.

The cartridge filter 7 contained in the unit container 6 is positioned at the lower end by a lower end cap 16 having a cylindrical cartridge stopper 18, and the upper end thereof is attached to each cartridge filter 7 by an upper end cap. It is supported on the upper surface of the body 13 by 17. Both end surfaces of the cartridge filter 7 are shielded by a lower end cap 16 and an upper end cap 17, respectively.

The lower end cap 16 has holes communicating with the cartridge filter inner holes 22, and the fitting portion 12 is formed in a loop shape including these holes inside. The lower end cap 16 also serves to partition the filtrate from the stock solution and guide it to the solution outlet 9 together with the partition wall 14.

Thus, as shown by the arrow in FIG. 1, the undiluted solution before filtration flows into the area defined by the partition wall 14 from the tip portion of the liquid introducing pipe 4, passes through the peripheral edge of the lower end cap 16, and then the cartridge. The outer surface of the filter 7 is reached. The filtrate filtered by the cartridge filter 7 enters the area surrounded by the partition wall 14 of the base 15 through the hole formed in the lower end cap 16 from the cartridge filter inner hole 22 and is sent to the liquid discharge pipe 5 and discharged. To be done.

A vent hole 20 is bored at the top of the unit container 6, and a plug 21 is attached and fixed to the vent hole 20. The vent hole 20 is provided on a place where the cartridge filter 7 is not arranged.

FIG. 6 is an enlarged cross-sectional view of an essential part showing an example of an embodiment of the ventilation hole 20 and the plug 21, and FIG. 7 is an enlarged cross-sectional view of an essential part showing another example of the same part. . The plug 21 shown in FIG. 6 is slightly larger than the vent hole 20 because the leg portion protruding to the outside of the unit container is crushed, while the plug shown in FIG. 7 has a male screw. A female screw is formed in the vent hole, and both are screwed together.

[0025]

[Effect of device]

 As described above, the cartridge filter container of the present invention has the vent hole which is normally closed by the plug at the top of the unit container, so the pressure inside the unit container is set to normal pressure and then the plug is removed. By opening the vent hole and pressing compressed air through the vent hole, the liquid remaining in the unit container can be pushed out to the line pipe. Therefore, it is possible to remove most of the liquid in the unit container when the unit container is replaced.

Furthermore, since the cartridge filter container of the present invention has a double structure consisting of a permanent pressure-resistant container and a disposable unit container, the original purpose in actual use is to simplify and clean the work. In addition to achieving the above, it is possible to prevent the discarded unit container from becoming a new source of environmental pollution, which is extremely useful in industry.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of a cartridge filter container of the present invention.

FIG. 2 is an external perspective view of the cartridge filter container of FIG.

FIG. 3 is a vertical sectional view showing an embodiment of the unit container according to the present invention.

4 is an external perspective view of the unit container of FIG.

5 is a sectional view taken along line VV ′ of FIG.

FIG. 6 is an enlarged sectional view of an essential part showing an example of an embodiment of a vent hole and a plug portion according to the present invention.

FIG. 7 is an enlarged sectional view of an essential part showing an example of another embodiment of a vent hole and a plug portion according to the present invention.

[Explanation of Codes] 1 Pedestal 2 Cap part 3 Flange 4 Liquid introduction pipe 5 Liquid discharge pipe 6 Unit container 7 Cartridge filter 8 Liquid introduction port 9 Liquid discharge port 10, 11 Closing valve 12 Fitting part 13 Body part 14 Partition wall 15 Base part 16 Lower end cap 17 Upper end cap 18,19 Cartridge stopper 20 Vent hole 21 Plug 22 Cartridge filter inner hole 23 Unit container void 24,25 Spring 26,27 O-ring

Claims (1)

[Scope of utility model registration request] 1. A cartridge filter container having a double structure consisting of a sheath having a pressure-resistant structure and a unit container housed in the sheath and containing a cartridge filter, wherein the unit container passes through the top. A cartridge filter container characterized in that pores are formed and the vent hole is provided with a stud-shaped plug, and the head of the plug is locked to the inner wall of the top of the unit container. .