JP2002540927A - Cartridge and device for handling liquid - Google Patents

Abstract

(57) [Summary] The present invention relates to a cartridge (1) for treating a flowing liquid. The cartridge comprises at least one upper part (2) having an inlet, a sealing member (16), and a cartridge main part (3) having a side wall and an outlet opening. The cartridge main part (3) has a processing agent. It is an object of the present invention to provide a sealing member arranged between the supply container and the cartridge (1), which can be operated without leakage even for a relatively long operation period and mechanically protected. This is achieved by a ring groove (14) arranged on the side of the cartridge upper part (2) facing the cartridge main part (3). The ring groove opens so as to be separated from the main part (3) of the cartridge. A ring-shaped expandable lip (16) projects upwardly from the bottom (8) of the ring groove.

Description

DETAILED DESCRIPTION OF THE INVENTION

The present invention relates to a cartridge for purifying a flowing liquid, comprising at least one cartridge.
The present invention relates to a cartridge having a cartridge upper portion having a plurality of intake openings, a sealing member, and a cartridge main portion having a side wall and an outlet, and the purifying agent is held in the cartridge main portion.

The invention also relates to a device for purifying a liquid, comprising a supply container having a bottom with an opening arranged therein, and a cartridge which can be filled with a purifying agent and seal the bottom of said container with sealing means. Things.

[0003] Liquid purification involves, inter alia, cleaning, filtration, removal of bacteria and modification of scents and odors. Cartridges of the type described at the outset are known. That is, it is composed of a container having an intake sleeve having an intake and an extraction sleeve. In known cartridges, a particulate cleaning agent is retained in an intake sleeve or cartridge top with an intake opening and an extraction sleeve to purify water. Particulate purifying agents are also known, for example, in the form of ion exchangers, activated carbons, minerals and mixtures thereof. By using the above device for purifying liquid,
Sterilize liquids such as water.

[0004] Known purification devices for water purify by using a mixture of an ion exchanger and activated carbon. An annular edge, which is preferably inclined with respect to the vertical central axis of the supply container, i.e. at a predetermined angle to the bottom opening, is arranged at the bottom opening of the supply container of the known purification device. An outer edge having a corresponding bevel is disposed along the largest circumference of the cartridge, and the beveled edge, ie, the outer edge, functions as a sealing member. In known devices and cartridges, water contained in a supply container above the cartridge is discharged through an intake opening at the top of the cartridge and a purifying agent. This known cleaning device works by gravity. The height of the column of liquid is due to the cleaning, i.e. the pressure which pushes the liquid to be purified from top to bottom by the cleaning agent in the cartridge.

The outer edges of known cartridges, also called filter cartridges, are susceptible to impact when moving the sealing member radially outward. If such a cartridge impacts the mechanism or falls to the floor during the manufacturing process, the sealing member, the outer edge of the cartridge having the largest diameter, will be impacted reliably. A predetermined bypass is formed by the groove or channel of the sealing member, and as a result does not have a sufficient sealing function. Known filter cartridges are made of polypropylene, which can be plastically deformed by an external impact. Such channels, which are not sealed, are less important for decalcification of water, improvement of water aroma or odor and similar treatment. Therefore, even if such sealing is not performed, it can be easily tolerated by a known purification device.

[0006] Whether a sealing element, which easily functions in the form of an O-ring made of rubber or other elastomeric material, is manufactured against a reciprocal sealing sheet or whether two identically shaped plastic surfaces are pressed together. Correspondingly, the sealing function is greatly optimized by the other member always being twisted relative to one member. In the known case, the cartridge provided on the rotationally symmetric sealing member is inserted from above into the opening in the conical bottom surface and manually twisted slightly. In order to improve the sealing function, it is necessary to further increase the torsional force to provide a good sealing function by an O-ring arranged outside the cartridge pressed against an inner sealing ring arranged in the opening of the conical bottom surface. There is.
However, with such an operation, after several minutes of use, i.e. after removing the cartridge from the inlet funnel and inserting a new cartridge, the sealing member is impacted and possibly destroyed. . Mounting is a normal operation.

[0007] It is therefore an object of the present invention to provide a cartridge as described in detail at the beginning, which allows a leak-free operation by means of a sealing member between the supply container and the cartridge and is mechanically protected even for a relatively long life. And a device for purifying liquids.

An object of this invention is to arrange an annular groove which opens away from the main part of the cartridge, on the side of the upper part of the cartridge facing the main part of the cartridge, from which an expandable sealing lip projects from the bottom of the annular groove. This is solved by the cartridge according to the present invention.

The new cleaning device and the new cleaning device with the cartridge described at the outset can be operated by gravity. However, the same means of providing a leak-free seal also applies to pressure-actuated cartridges and purifiers, where the liquid is pressurized through the cartridge by a pump or other propellant and discharged through an outlet. You. However, in the case of a pressure operation system,
The supply container as well as the cartridge can be positioned and operated at any angle to the vertical. The present invention covers applications in all these cases. However, in order to understand the features of the present invention, a gravity operated purification device will be described, in which the central axis of the supply container and the central axis of the cartridge are substantially perpendicular. The inlet is located at the top of the cartridge upper part, whereas the main part of the cartridge with side walls is located at the lower side and the outlet is located at the bottom end of the cartridge. According to this example, the upper side of the cartridge facing the main part of the cartridge is, consequently, a lower region of the upper part of the cartridge to which the main part of the cartridge is fixed.
According to the invention, in the lower region of the upper part of the cartridge, there is arranged an annular groove passing around the central axis of the cartridge along a plane. The central axis of the cartridge cuts out this plane vertically. The annular groove opens away from the main part of the cartridge, that is, upwards in the upper part of the cartridge. Assuming a cartridge having an ejection opening in front of a cartridge standing on a table, preferably a flat, expandable sealing lip is visible in an annularly projecting upwardly open annular groove and its bottom. When viewed from above in the direction of the central axis, the upper free end of the sealing lip fixed to the bottom of the annular groove is visible.

A significant advantage of the new sealing lip lies mainly in the protective space formed by the annular groove and protecting the sealing lip from external influences, impacts and collisions. The maximum diameter of the cartridge is in an area above the cartridge facing the main part of the cartridge. Thus, the sealing member has a relatively small outer circumference. This is because the sealing member has a somewhat smaller diameter inside the annular groove. The radius of the sealing member, i.e. the outer circumference, provides a larger radius than the radius of the sealing lip. Thus, it is clear that the sealing lip is mechanically protected. The cartridge according to the invention has the direction of the open annular groove,
That is, they move in the direction of the projecting sealing lip towards the outer part of the corresponding structure and are connected in a gas-tight manner. If a new cartridge according to the present invention falls adjacent to the machine part or to the ground during manufacture, the impact on the cartridge will occur in the maximum radius area, at most only damaging the outer periphery of the annular groove. The sealing member itself is protected from impact or similar effects.

In contrast, known cartridges, which have a maximum radius on the annular sealing edge itself, which increases in size as the size of the cartridge increases, can be damaged accordingly, and according to the invention, The size of the diameter of the sealing lip depends on the maximum radius of the cartridge. It is only necessary to make the annular groove wider or narrower accordingly. As a result of the sealing lip formed in the annular groove, cartridges according to the invention of different shapes can be provided without damage.

The groove is preferably annular, referred to as an “annular groove”, but other shapes besides the annular are possible. Thus, the sealing lip can also follow a different baseline than a circle, for example, an ellipse, an ellipse or a rounded polygon.

The advantage of the form in which the annular sealing lip is expandable provides a good sealing force. When a new cartridge is inserted into the outside, i.e. the opening in the container bottom, the new sealing lip expands. The sealing lip used so far for the cartridge spreads and flattens rapidly. In the known construction, the outer sealing ring has a larger diameter than the sealing lip, so that when these two parts of the envisaged construction are interconnected, the sealing lip will spread out and flatten rapidly, As a result, the sealing lip is twisted and protruded. Twisting and bulging are extremely problematic during sealing of the sealing lip.
The size and force at which torsion or overhang occurs cannot be defined by the design of the sealing lip. This cannot be defined by the premature and occasional operating state.

The expandability of the new sealing ring according to the invention allows the lip to be significantly stretched and torn even under excessive force. However, the resistance to tearing of the substrate is very well defined, so that according to the invention it is necessary to define the size of the sealing lip as well as to define a specific size and to define the desired substrate This makes it extremely slow to reach the point where excessive elongation and tearing occurs. By using commercially available supportable means, the shape of the sealing lip substrate and the closed ring can be found, so that during operation a high sealing force is reached by expansion of the sealing lip.

The annular groove is delimited in an outer radial direction by an outer annular collar, and is delimited in an inner radial direction by a lower frustoconical portion of the upper part of the cartridge facing the main part of the cartridge; It is suitable in the present invention. By making the upper part of the cartridge a frusto-conical shape, it is possible to arrange an intake opening, a slit, and the like for releasing a gas such as a liquid or air as needed. In this case, the liquid to be cleaned can always flow from the region above the sealing lip to the side surface of the upper portion of the cartridge.

The present invention will be described repeatedly with reference mainly to a system in which gravity acts. Therefore, the terms "top" and "bottom" are used. However, arrangements having a system in which pressure acts are also envisaged, in which case the axis of the cartridge can be set to be inclined or transverse to the vertical. However, for the remainder of the specification,
We continue to refer to the upper part of the cartridge top, which means the part facing the liquid to be flowed in or out.

The height of the sealing lip, measured from the bottom of the annular groove in the direction of the projecting sealing lip, is lower than the corresponding height of the outer annular collar and is spaced from the bottom of the annular groove when viewed in cross section It is particularly suitable for the present invention when it is designed to form a tapered shape in accordance with the requirements. The former feature serves to enhance the protection of the sealing lip. However, the basic protection space is already formed by the entire area above the annular groove, in which case the upper end of this area of protection is
It is the upper end of the bottom of the frust conical above the cartridge. The cartridge upper part has, for example, a frusto-conical bottom part and a subsequent frusto-conical upper part, that is, a frusto-conical part having a diameter different from each other. In this case, the protective space is located in the region of the outer circumference of the bottom of the frusto-conical and is defined by the upper free end of a relatively large annular collar. The second feature applies to different embodiments, and therefore the sealing lip is designed to form a tapered cross-section from the bottom of the annular groove. That is, the base of the sealing lip is wider than the width of the upper free end of the sealing lip. Also, the height of the sealing lip,
Make it sufficiently wider than the base width of the sealing lip. The tapering of the cross-sectional shape of the sealing lip from the base of the annular groove, ie from bottom to top, results in a variable sealing lip, which makes it possible to very precisely define the sealing force during operation. The tapering design of the sealing lip is also advantageous from a manufacturing point of view. The reason is that the tapered sealing lip manufactured by injection molding is easy to remove from the mold.

According to the present invention, it is preferable from the viewpoint of manufacturing that the sealing lip is made of the same base material or elastomer material as the upper part of the cartridge. The cartridge top is well formed from polypropylene. However, elastomeric materials known in the injection molding art can be considered in forming the entire cartridge or a portion thereof.

The present invention is also characterized in that a moving means for moving the cartridge relative to the outer portion in the axial direction is provided on the upper portion of the cartridge. This outer portion is, for example, an opening at the bottom of the supply container. According to a preferred embodiment, the cartridge according to the invention is air-tightly engaged with such an outer part, for example the inner edge of the opening, so that it is suitable for the cartridge to move relative to this outer part. During such movement, it is envisaged that the cartridge is inserted in the direction of the central axis of the outer part, and thus from below to above, in the system where gravity acts. The preferred embodiment combines such an operation with rotation about the axis. By arranging the moving means on the cartridge according to the invention, an exactly defined movement can be performed during certain operations of the cartridge. As a result, a precise sealing force is defined, and a tight seal between the cartridge and the lower opening of the container can be provided by a person without special training.

According to another preferred embodiment of the present invention, a guide groove serving as a moving means which is set at a predetermined inclination angle with respect to the bottom surface of the annular groove and opens in an inner radial direction is provided on the outer annular collar. At least at the periphery. For example, when viewing the inside of the outer annular collar from the center, a guide groove extending across the inside of the outer annular collar and across a part of its periphery is seen to open radially inward. If the entire perimeter of the outer annular collar extends over 360 °, the perimeter is 20-330 °
, Preferably 60-180 °, and more preferably about 90 °. In the latter case, four such peripheral parts, and thus four guide grooves, are provided.

Assuming that the fixed portion of the annular groove is flat, it is easily assumed that the guide groove can be set at the above angle with respect to the plane. As a result of this design of the guide grooves of the outer annular collar with respect to the ramp, as described above, the cartridge is moved in the direction of the central axis by rotation. The temporary movement is performed according to the gradient of the guide groove, that is, the magnitude of the inclination angle. The guide groove is defined downward (in the direction of the main part of the cartridge) by a "downhill ramp". In contrast, the guide groove is defined upward by the “uphill ramp”.

According to the present invention, an insertion opening is arranged at an upper portion of the guide groove so as to be further away from the main portion of the cartridge, and a bottom portion facing the upper portion is cut over the entire thickness of the outer annular collar. It is also preferable to arrange a missing window. The insertion opening serves to introduce a control protrusion on the outer part for the rotation of the cartridge, and the window located on the opposite side allows the user to hear the sound to know the end state and the closed position. And the user can detect the control protrusion at the outer position at the end position from the outside of the cartridge through the window.

An object of the present invention is to provide an apparatus for purifying a liquid, comprising: a supply container having a bottom provided with an opening; and a cartridge filled with a purifying agent and capable of sealing the bottom of the container by sealing means. A sealing means has on the side of the cartridge an annular expandable sealing lip projecting from the bottom of the annular groove in the direction of the container bottom, and on the side of the container bottom an inner sealing ring projecting in the opposite direction. The apparatus is characterized in that the diameter of the sealing ring is smaller than the diameter of the sealing lip. In practice, the device is envisaged with an outer part, here a container bottom with an opening, the so-called inner sealing ring having a diameter larger than the diameter of the sealing lip. Basically, when the cartridge moves to the bottom of the container, the sealing is always possible. However, as already explained, excessive flattening and rapid spreading can result in twisting and bulging. According to the invention, it is preferred that the diameter of the inner sealing ring arranged at the inner end of the container bottom is smaller than the diameter of the sealing lip. During the rotational insertion of the sealing lip into the sealing sheet of the inner sealing ring, the sealing lip is subjected to a force to expand outward by increasing the diameter of the sealing lip.

As already mentioned, the advantage of the expansion of the sealing lip is that it has a protective function. The reason is that the expandable sealing lip is protected by the annular groove of the cartridge.

The cartridge according to the present invention can also be easily and continuously inserted into the container bottom by a user who does not need to be skilled without special guidance. Even if the cartridge or supply container is not handled carefully, little damage is expected.

This is facilitated by being located at the container bottom at a predetermined radial distance from the concentrically adjacent inner sealing ring of the outer fixing ring having a larger diameter than the inner sealing ring. The outer securing ring passes around the inner sealing ring at a predetermined distance and forms an annular groove that opens downward to the cartridge. The outer retaining ring protects the surface of the inner sealing ring which is tight against the sealing lip. Preferably, this surface has a spherical shape. However, the ramp is sufficient to hermetically seal the sealing lip when inserted into the groove between the inner sealing ring and the outer retaining ring.

The function of fixing the container bottom to the cartridge is also important. The reason is that, according to another aspect of the present invention, at least one outer radially projecting cam sized to be slidable relative to a guide groove provided in the cartridge is arranged on the outer fixing ring. Because you do. Thus, such a cam cuts through the bottom of the container, which is assumed to be stationary, and is inserted into the insertion opening of the guide groove by appropriate rotation of the cartridge, so that by engaging with the guide groove, the cartridge becomes conical. It is pulled or pressed axially (in the direction of the central axis) by rotating relative to the bottom. That is, the cartridge is inserted or removed. The lower ramp of the guide groove is used to remove the cartridge when the cartridge is moved and removed from the container bottom during rotation. The upper ramp serves to adapt the cartridge.

According to another preferred embodiment of the invention, if the groove between the inner sealing ring and the outer fixing ring is joined in the area of the protective cam by means of the support rib, the cam will move relative to the outer fixing ring. It is well supported and firmly held against the container bottom. Preferably, the cam is characterized by a key color, which is visible from outside the sealing end when the window reaches the bottom end of the guide groove.

It is also advantageous to arrange the cams in the outer radial direction of the outer fixing ring. The reason for this is that it has good cleaning performance. The outer fixing ring of the container bottom, i.e. the container bottom with the cam, needs to be removed when the cleaning agent is used up and consumes less than cartridges which need to be replaced or refilled with new ones. However, it is preferred when the material of the cam and the outer fixing ring is stable and has a good shape. The guide groove has a somewhat more complicated shape than the cam, and therefore, the cleaning becomes more difficult. However, as the cartridge is changed after the treatment agent has been used up, the inclusion of undesired particles in the guide groove is less critical than in the case of the position of the outer fixing ring. Cleaning of the guide groove is very easy.

The shape of the cam of the outer retaining ring can be a knob, hemisphere or other protruding shape. Elongated cams are also suitable, in which case the longitudinal direction of the cams extends in the peripheral direction of the outer fixing ring. The length must be selected so that the cam always fits the insertion opening and therefore fits through the window. The elongated shape serves to stabilize the cam and offers the advantage that the cartridge cam can be rotated with relatively little force relative to the container bottom. The material used for the cartridge is, for example, polypropylene. The main part of the cartridge and the upper part of the cartridge can be formed by injection molding using this material. A radial locking flange extends at the top end of the cap-shaped main portion of the cartridge and connects to the top of the cartridge below the bottom of the annular groove. This type of manufacture is simple and economical.

Due to the advantages of the above embodiment according to the invention, a large sealing force can be obtained between the sealing members, and the sealing lip is not only protected from mechanical external forces, but also
Protect from friction and other claims. A slight movement of the sealing surface is sufficient.

In this way, an airtight 100% sealing of the space in the supply container for the liquid to be treated and the space between the top or outside and inside of the cartridge is ensured. Detergents can eliminate and kill bacteria, resulting in a bacteria-free liquid.

If the ramp of the guide groove has an appropriate height, a user-friendly force can be generated. Thereby, the airtight fastening is performed, and the cartridge can be removed from the airtight fastening.

The cartridge shown in FIG.
And a cartridge main part 3 arranged thereunder.

A supply container 4 having a bottom 5 and an opening 6 located in the bottom 5 is shown in a space above the cartridge 1 in FIG. First, the cartridge 1 will be described. The cartridge main part 3 is formed in a cup shape, and the cartridge main part 3 has a discharge port, for example, a discharge sleeve at a bottom part that is not visible in FIG. It is assumed that a purifying agent, for example, an ion exchanger in the form of particles mixed with activated carbon is held in the main part 3 of the cartridge. The inlet of the cartridge upper part 2 is also not shown. The intake can be in the form of a plurality of intake slits arranged in a ring. As a result, the particulate matter
It can be held by a discharge sleeve (not shown) and an inlet at the top of the cartridge.

A radially extending fixing flange 7 shown in FIGS. 1 and 6 is arranged at the upper end of the main part 3 of the cartridge. The upper side of the fixing flange 7 that surrounds the periphery of the cartridge main part 3 in a ring shape is made flat. The upper cartridge portion 2 is supported by an annular lower bottom portion 8 serving as an edge of the main cartridge portion 3, and the lower bottom portion 8 is joined to a side surface of the main cartridge portion 3. After joining is indicated by reference numeral 9 in FIG.

A cartridge top 2 having a sealing means that can be hermetically sealed, corresponding to the sealing means on the container bottom 5, is particularly useful in the present invention. The cartridge upper part 2 comprises a lower frusto-conical part 10 having a larger diameter than the dome 12 arranged on the annular wall 11. The bottom 8 of the annular groove, generally designated by the reference numeral 14, is the edge of the main part of the cartridge at the lower end of the upper part 2 of the frustoconical cartridge. The bottom 8 is substantially flat and is arranged parallel to the fixing flange 7. The plane formed by the bottom 8 of the annular groove 14 is orthogonal to the central axis. In the embodiment shown, the supply container 4 having the opening 6 and the cartridge 1 are rotationally symmetric about this same central axis 13. The annular groove 14 is bounded radially on the outside by an outer annular collar 15. The concentrically expandable sealing lip 16 comprises a lower frustoconical portion 10 of the cartridge upper part 2 and an outer annular collar 1.
5 protrudes from the bottom 8 of the annular groove 14. From the drawing, it can be seen that the sealing lip 16 is designed to taper upward as it moves away from the bottom 8 of the annular groove 14. The annular groove 14 opens upward, that is, apart from the cartridge main part 3. The sealing lip 16 is disposed at the center of the annular groove 14 or at one of the sides. As is apparent from FIG. 2, the sealing lip 16 is compared with and close to the lower frust conical portion 10 of the upper portion 2 of the cartridge.
(At narrow intervals).

As can be seen from FIG. 4, the height h of the projecting sealing lip 16 is smaller than the outer annular collar 15. In the cross-sectional view of FIG. 4, the annular collar is clearly thinner at positions V and VI in FIGS. 5 and 6, but a height ratio of 1: 2 is preferred.

The moving means is provided on the cartridge 1, and the guide groove 17 is arranged on the outer annular collar 15. The basis of the groove is the remaining outer wall of the outer annular collar 15. The guide groove 17 is opened radially inward. As is clear from FIG. 1, as a result of cutting out a part of the cartridge 1, the inside of the outer annular collar 15, that is, the inside of the guide groove 17 can be seen. FIG. 3 shows the development of the drawing plane across the periphery of the outer annular collar 15. The observer is located between the sealing lip 16 and the outer annular collar 15 so to speak. When viewed from the upper part to the lower part of the cartridge 1 in the direction of the central axis 13, the broken line 21 in FIG. 2 along the arc indicates the position of the cross section in FIG. 3, that is, the position of a person who views the cross section in FIG. The bottom 8 of the annular groove is shown in cross section and the annular inner surface of the outer annular collar 15 is shown over approximately one quarter of the circumference of the annular collar 15.

It is clear from FIG. 2 that the perimeter of the outer annular collar 15 is divided into four sections, each perimeter corresponding to approximately 90 °. The deployment shown in FIG.
4 times as large as. Thus, in describing the present invention, it is sufficient to merely show and describe the periphery corresponding to a 90 ° angle. The other three of the annular collar 15
The peripheral parts have the same design.

A guide groove 17 that opens inward in the direction of the central axis 13 toward the observer is
Is set at a β inclination angle with respect to the plane of the bottom portion 8 of. Therefore, the insertion end of the guide groove 17 as shown on the left side of FIG. 3 is higher than the right holding end or the engagement end of the guide groove arranged on the opposite side, and is separated from the bottom 8 of the annular groove 14. are doing. At this mating end, the outer annular collar 15 is visible through the window 18, i.e. radially outward. This means that the window 18 in the annular collar 15
1 is also apparent from FIG. In the area of this window 18, the guide groove 17 is bottomed and the window passes through the entire thickness D of the outer annular collar 15 (FIG. 6). The guide groove 17 having the insertion opening 19 starts at the upper end separated from the cartridge main part 3. This is in the form of a funnel with two lateral spheres 20, shown as inclined intake surfaces 20 to show another embodiment. The embodiment of FIG. 3 is shown in the direction of the central axis 13 shown in FIG. As shown, a relatively wide spherical intake surface 20 is visible, with an insertion opening 19 and a relatively thin intake surface 20 continuing counterclockwise. The guide groove 17 actually starts below a relatively thin intake surface, ie an intake gradient 20, continues as indicated by the dashed line in FIG. 2 and ends at the window 18.

FIG. 3 shows three cross sections of the guide groove 17 in cooperation with FIGS. FIG. 4 corresponds to the section line IV-IV in FIG. Parallel to the outer annular collar 15, the insertion opening 19 opens from above to below between the lower ramps 22 of the guide groove 17. However, the person referring to FIG. 3 also cannot see the sealing lip 16 arranged radially towards the center (central axis 13). The observer will generally see only the outer portion, generally designated by reference numeral 23, and forming a right angle from above in FIGS.

The cross section in FIG. 5 is a cross section along the line VV in FIG. Here, the guide groove 1
7 is clearly shown by two horizontal dashed lines. The guide groove 17 is arranged between them. Outside the lower ramp 22, the upper ramp 24 can be seen.
The lower ramp 22 also belongs to the bottom 8 of the annular groove 14. A slit 25 can be seen between the radially outer end of the lower ramp 22 (to the left in FIGS. 4-6) and the reduced thickness portion 15 ′ of the annular collar 15. The slit 25 simply improves the removal of the plastic part from the molding during the production by injection molding.

The cross-sectional view of FIG. The distance of the lower ramp 22 from the bottom surface of the bottom 8 of the annular groove 14 gradually decreases from the position IV to the position VI through the position V. This corresponds to the inclination angle β of the guide groove 17 extending downward from the insertion opening 19 in FIG. 3 so as to approach the bottom 8 rightward.

All the parts that come into contact with the guide groove 17 as the moving means can be confirmed on the side surfaces of the cartridge, particularly 17-20, 22 and 24.

The sealing means on the bottom 5 of the supply container 4 is linked with the three sealing means on the side of the cartridge.

The opening 6 in the container bottom 5 has already been described with reference to FIG. In particular, the inner sealing ring 26 shown in FIGS. 4-6 extends in the direction of the central axis 13 on the circular end inside the opening 6. In these figures, the bottom part 5 of the container 4 is partially cut away. The innermost lip in the radial direction is an inner sealing ring 26 projecting downward in the container bottom surface 5 and in the direction of the central axis 13. From the drawing, it is clear that the diameter of the inner sealing ring 26 of the present embodiment is smaller than the diameter of the sealing lip 16. In this way, the uppermost, radially innermost end 27 of the inner sealing lip 26 is in line contact with the spherical sealing surface 28 of the inner sealing ring 26 and can be brought into airtight engagement as shown in FIG. I can do it. Moving from FIGS. 4 and 5 to FIG. 6, a slight shift of the sealing lip 16 is equivalent to an increase in diameter. In other words, the sealing lip 16 expands.

When the cartridge 1 is placed on the supply container 4 and the condition of the purification device of FIG. 1 is checked before the connection in an airtight manner, the expandable sealing lip 16 shows that the central axis 1
3 projects upward from the bottom 8 of the annular groove 14 in the direction 29, and on the side of the container bottom 5, the inner sealing ring 26 projects downwards in the opposite direction 30, ie along the central axis 13. The directions 29 and 30 lie parallel to the central axis 13 and to each other.

Concentrically radially spaced from the inner sealing ring 26, there is an outer stationary ring 31 on the container bottom 5 that is larger in diameter than the sealing ring 26. As a result, the inner sealing ring 26 and the outer safety ring 31 arranged at a predetermined distance extend in the direction 30 of the bottom 5 towards the cartridge and form a groove 32 that opens downward in the direction 30. .

Four cams 33 projecting outward in the radial direction are arranged on the outer fixing ring 31.
Each of these cooperates with one of the four guide grooves 17. In describing the present invention, it is sufficient to describe only one pair of moving means, namely the cam 33 and the guide groove 17.

The section according to FIGS. 4 to 6 is always taken at the bottom, where the cam 33 is perpendicular. The depth and length of the cam 33 are set so as to fit through the insertion portion 19 and partially pass through the insertion opening reaching the position of the window 18 so as to be confirmed from the position in FIG. In this way, the cam 33 shown on the outside can be seen from outside of the outer annular collar 15 in the fastening position corresponding to the sealing position, that is, the holding position (FIG. 6).
.

The groove 32 between the inner sealing ring 26 and the outer fixing ring 31 is connected by a support rib 34 in the area of the protruding cam 33. The support ribs 34 can be seen in FIGS. 4-6 to set the cross-section with a visual line “in front” of the center of the cam 33.

FIG. 1 shows an initial state during the operation. The user inserts the four cams 3 into the four insertion portions 19.
3 and rotate the cartridge 1 with respect to the bottom 5 which is considered to be the stationary state of the supply container 4. When the cartridge 1 is viewed from above in the direction of the arrow 30 through the opening 6 in the bottom 5, the cartridge 1 is rotated counterclockwise, whereby each cam 33 slides below the guide groove 17. In the middle of the height direction,
Reach position V. In FIG. 5, the outer annular collar 15, ie the cam 33 engaged below the upper ramp 24, can be seen. In FIG. 5, when moving further inward in the radial direction, it can be confirmed that the uppermost inner edge 27 of the sealing lip 16 directly presses and contacts the spherical surface 18 of the inner sealing ring 26, and the bending position is reached. . The sealing lip 16 starts expanding. If the cartridge 1 continues to be rotated by the user, the cam 33 slides further down and goes straight on the guide groove 17 until the window 18 is reached and the cam 33 is held there. This state is shown in FIG. Further, as one proceeds radially inward, one can see the expanded sealing lip 16 sealingly engaged with the spherical surface 28 of the inner sealing ring 26.

The release operation is performed by performing the reverse of the above operation.

[Brief description of the drawings]

FIG. 1 is a partial perspective view of a supply container shown above having a bottom and an opening located thereon, and a cartridge shown below with the supply container and a predetermined space.

FIG. 2 is a plan view of a cartridge in which a relatively thick annular line indicates a sealing lip at the top.

FIG. 3 shows the development of the periphery of the outer annular collar corresponding to an angle of approximately 90 °.

FIG. 4 is a sectional view taken along line IV-IV in FIG. 3;

FIG. 5 is a sectional view taken along line VV in FIG. 3;

FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 3, in which a part of the cartridge is also indicated by broken lines.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cartridge 2 Upper part of cartridge 3 Main part of cartridge 4 Supply container 5 Container bottom 6 Bottom opening 7 Fixing flange 8 Bottom part of cartridge upper part 9 Joint part 10 Lower frust conical part of cartridge upper part 11 Annular wall 12 Dome 13 Center axis 14 Annular groove Reference Signs List 15 outer annular groove 16 sealing lip 17 guide groove 18 window 19 insertion opening 20 side intake surface 21 section indicated by broken line 22 lower inclined portion 23 outer portion 24 upper inclined portion 25 slit 26 inner sealing ring 27 inner edge 28 sealing surface 29 Upper direction of the sealing lip (central axis direction) 30 Lower direction of the sealing lip (central axis direction) 31 Fixing ring 32 Groove 33 Cam 34 Support rib

──────────────────────────────────────────────────続 き Continuation of front page (81) Designated country EP (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE ), OA (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG), AP (GH, GM, KE, LS, MW, SD, SL, SZ, TZ, UG, ZW), EA (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM), AE, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DK, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS , JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZA, ZW

Claims (11)

[Claims] 1. A cartridge (1) for purifying a flowing liquid, comprising:
It has a cartridge upper part (2) having at least one intake opening, a sealing member (16), and a cartridge main part (3) having a side wall and an outlet. In the cartridge in which the cartridge main body (3) is held, an annular groove (14) that opens so as to be separated from the cartridge main part (3) is arranged on the cartridge upper part (2) facing the cartridge main part (3), A cartridge characterized in that an expandable sealing lip (16) projects from the bottom (8) of the annular groove (14). 2. The lower frust of said cartridge upper part (2) facing said cartridge main part (3), said annular groove (14) being delimited in an outer radial direction by an outer annular collar (15). 2. The cartridge according to claim 1, wherein the conical section defines an inner radial boundary. 3. The height (h) of the sealing lip (16) measured from the bottom (13) of the annular groove (14) in the direction of the projecting sealing lip (16).
) Is designed to be less than the corresponding height (H) of the outer annular collar (15) and to form a tapered shape as viewed from a cross-section, away from the bottom (8) of the annular groove (14). The cartridge according to claim 1 or 2, wherein 4. The sealing lip (16) is attached to the upper part of the cartridge (4).
The cartridge according to any one of claims 1 to 3, wherein the cartridge is made of the same base material or elastomer material as in (2). 5. The cartridge (1) has an outer portion (7) in a direction of a center axis (13).
The cartridge according to any one of claims 1 to 4, wherein moving means (17-20, 22, 24) for performing relative movement with respect to (23) are provided on the upper portion (2) of the cartridge. 6. A predetermined inclination angle (β) with respect to a bottom (8) of said annular groove (14).
) And a guide groove (17) as a moving means that opens in the inner radial direction.
6. A cartridge according to any one of the preceding claims, wherein a) is arranged at least around the outer annular collar (15). 7. An insertion opening (19) is arranged above the guide groove (17) so as to be further away from the cartridge main part (3), and the outer annular collar ( 15) A cartridge as claimed in any one of the preceding claims, characterized in that a cut-out window (18) is arranged over the entire thickness (D) of (Fig. 3). 8. A supply container (4) having a bottom with an opening (6) disposed therein, and a cartridge (1) filled with a purifying agent and capable of sealing the bottom (5) of the container by sealing means. In the apparatus for purifying a liquid provided with, the sealing means is provided on the side of the cartridge (1) with the container bottom (5).
) Has an annular expandable sealing lip (16) projecting from the bottom (8) of the annular groove (14) in the direction (29), and in the opposite direction (30) on the side of the container bottom (5).
An inner sealing ring (26) protruding from the sealing lip, the diameter of said sealing ring being smaller than the diameter of said sealing lip (16). 9. An outer fixing ring (31) having a diameter larger than the diameter of the inner sealing ring (26) concentrically adjacent to the inner sealing ring (26) at a predetermined radial distance (a) from the inner sealing ring (26). Device according to claim 8, characterized in that it is arranged at the bottom (5). 10. At least one outer radially projecting cam (33) sized to be slidable relative to a guide groove provided in the cartridge (1).
) Is arranged on the outer fixing ring (31).
The described device. 11. A groove (32) between the inner sealing ring (26) and the outer fixing ring (31) is provided by a support rib (34).
Device according to any one of claims 8 to 10, characterized in that it straddles the area of).