Liquid processing filter

Abstract

To provide a liquid substance processing filter that can suck a liquid substance without lowering suction force of a suction device and can prevent a sucked liquid substance from leaking out from a filter body.SOLUTION: A liquid substance processing filter 10 includes: a bag-like filter body 1 including an opening part and having gas permeability; a sheet body 2A(2B) including a water absorbing polymer 2a placed inside the filter body 1; and a plate-like support body 3 including a liquid substance suction port 3a fitted to the opening part of the filter body 1. The filter body 1 is sectioned into three housing spaces 1A, 1B, 1C. The center housing space 1A is a space communicated to the opening part and storing the sucked liquid substance. A sheet body 2A(2B) is stored in each of the housing spaces 1B(1C) of both side parts of which wall surfaces are adjacent to the center housing space 1A.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention was created based on a joint development contract (the "Contract") between JR West Japan Maintenance Co., Ltd. and Kowa Co., Ltd., and was made as a result of activities carried out within the scope of the Contract. The Contract became effective before the date of the present invention.

[0002] The present invention relates to a liquid treatment filter used in a suction device for sucking and treating a liquid substance.

Background Art

[0003] Conventionally, an invention of a liquid treatment filter used for sucking and treating a liquid substance containing harmful liquids such as blood contaminated with pathogenic bacteria and solids such as vomit by a suction device such as an electric vacuum cleaner is known (Patent Document 1).

[0004] The invention of Patent Document 1 is to incorporate a starch-based, cellulose-based, or synthetic polymer-based superabsorbent polymer, or a non-woven fabric such as polyester impregnated with a superabsorbent polymer, into a paper garbage bag that has been hydrophobized, so that the moisture and liquid of the garbage sucked by the vacuum cleaner are made into a gel state and can be discarded together with general garbage.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, the liquid processing filter described in Patent Document 1 had the problem that, because the nonwoven fabric impregnated with the superabsorbent polymer was too small for the garbage bag, moisture inside the garbage bag could seep out without reacting with the superabsorbent polymer. On the other hand, if the water-repellent properties of the paper garbage bag were increased, the air permeability as a filter would decrease, which would reduce the suction power of the suction device.

[0007] The present invention aims to solve the aforementioned conventional problems and to provide a liquid processing filter that can suck up liquids without reducing the suction power of the suction device, and that can prevent the sucked-up liquids from seeping out of the filter body. [Means for solving the problem]

[0008] To solve the aforementioned conventional problems, the invention of claim 1 provides a liquid processing filter for use in a device that sucks up liquids by suction, comprising: a bag-shaped filter body having an opening and being breathable; a sheet body containing a water-absorbent polymer placed inside the filter body; and a plate-shaped support body having a liquid suction port attached to the opening of the filter body, wherein the bag-shaped filter body is divided into three containment spaces, the central containment space communicating with the opening and being a space for containing the aspirated liquid, The ends of both sides of the two opposing surfaces are joined together to form a bag-like structure. The sheet body is housed in each of the central storage space and the storage spaces adjacent to the wall. Furthermore, the area of ​​the sheet body when viewed from above is in the range of 81% to 94% of the area of ​​the filter body when viewed from above, and the sheet body is movable within the containment space. It is characterized by the following.

[0009] In the invention of claim 1, the bag-shaped filter body is divided into three containment spaces, capturing solid matter contained in the liquid in the central containment space, and ensuring that only moisture reacts with the water-absorbing polymer, thereby preventing moisture from seeping out of the filter body. Furthermore, since the sheet body can move freely within the containment spaces of the filter body in accordance with the expansion of the water-absorbing polymer, the entire filter body expands, allowing for efficient absorption of moisture. In addition, since the sheet body has little effect on the air permeability of the bag-shaped filter body, a decrease in the suction power of the suction device can be prevented. Note that the three containment spaces of the bag-shaped filter body in claim 1 mean that there are at least three containment spaces, and the invention of claim 1 also includes cases where there are a total of four or more containment spaces, such as when the cross-sectional shape of the bag-shaped filter body is polygonal, consisting of a central containment space and three or more containment spaces adjacent to the central containment space and its wall surface. Also, By limiting the size of the sheet containing the superabsorbent polymer, the moisture from the absorbed liquid can be reliably reacted with the superabsorbent polymer, preventing the moisture from seeping out of the filter. Furthermore, because there is sufficient space for the sheet to move within the filter's containment space, the entire filter expands, allowing for efficient moisture absorption. moreover, Since the sheet material has little effect on the air permeability of the bag-shaped filter material, a decrease in the suction power of the suction device can be prevented. Furthermore, because the number of joints in the filter material can be reduced, moisture from the liquid material can be prevented from seeping out of the filter material. In addition, because the space formed between the filter material and the sheet material can be reduced, the moisture from the absorbed liquid material can be reacted more reliably with the water-absorbing polymer.

[0010] The invention of claim 2 is a liquid processing filter used in a device that sucks up liquids by suction force, comprising: a bag-shaped filter body having an opening and being breathable; a sheet body containing a water-absorbent polymer placed inside the filter body; and a plate-shaped support body having a liquid suction port attached to the opening of the filter body, wherein the bag-shaped filter body is divided into three containment spaces, the central containment space communicating with the opening and being a space for containing the aspirated liquid, Near the liquid suction port, the filter body has an airtight sheet layer on its side surface. The sheet body is housed in each of the central storage space and the storage spaces adjacent to the wall. Furthermore, the area of ​​the sheet body when viewed from above is in the range of 81% to 94% of the area of ​​the filter body when viewed from above, and the sheet body is movable within the containment space. This is a key feature. This prevents moisture from liquids from seeping out from the sides of the filter body near the liquid intake port, where liquids are difficult to react with the superabsorbent polymer. Furthermore, since there is no need to place a sheet near the liquid intake port, it prevents the expansion of the superabsorbent polymer from blocking the liquid intake port.

[0011] The invention of claim 3 is a liquid processing filter used in a device that sucks up liquids by suction force, comprising a bag-shaped filter body having an opening and being breathable, and a component placed inside the filter body It also contains cotton, which is made of a water-absorbent polymer powder, and the sheet body is formed by folding it in half in the middle. A liquid processing filter comprising a sheet body and a plate-shaped support equipped with a liquid suction port attached to the opening of the filter body, wherein the bag-shaped filter body is divided into three containment spaces, the central containment space communicating with the opening and containing the aspirated liquid, and the sheet body is contained in each of the containment spaces adjacent to the central containment space and its wall surface. This allows the moisture of the liquid to react with the superabsorbent polymer at various points in the bag-shaped filter body, preventing it from seeping out of the filter body.

[0012] The invention of claim 4 is characterized in that, in any of the inventions of claims 1 to 3, the filter body has a tapered shape in which a bottom surface is not formed at the bottom before the liquid is absorbed. As a result, the liquid flows down to the bottom while contacting the inner wall surface of the bag-shaped filter body, so that the moisture of the liquid can be efficiently absorbed by the entire filter body. In addition, since it is possible to prevent the liquid from strongly impacting the bottom of the filter body, it is possible to prevent damage to the filter body and the moisture of the liquid from seeping out of the filter body. Furthermore, since the space formed between the filter body and the sheet body can be reduced, the moisture of the absorbed liquid and the water-absorbing polymer can be reacted more reliably. [Effects of the Invention]

[0015] Claim 1~3 The invention can prevent moisture from the inhaled liquid from seeping out of the filter body and can also prevent a decrease in the suction power of the suction device. 1~4 This invention allows the moisture in the absorbed liquid to react more reliably with the water-absorbing polymer.

[0016] Claim 2 The invention can prevent moisture from a liquid from seeping out from the side of the filter body near the liquid suction port, where the liquid is difficult to react with the superabsorbent polymer. 3 This invention allows the moisture in a liquid to react with the superabsorbent polymer at various points in the bag-shaped filter body, preventing it from seeping out of the filter body. [Brief explanation of the drawing]

[0017] [Figure 1] (a) Perspective view of the liquid processing filter according to the present invention (b) Front view of the liquid processing filter according to the present invention (c) Right side view of the liquid processing filter according to the present invention (d) Cross-sectional view AA of Figure 1(b) [Figure 2] (a) Perspective view showing the manufacturing process of the liquid processing filter according to the present invention (b) Enlarged cross-sectional view of the sheet body constituting the liquid processing filter according to the present invention [Figure 3] (a) Front view of the liquid treatment filter according to the present invention before reacting with the water-absorbing polymer (b) Front view of the liquid treatment filter according to the present invention after reacting with the water-absorbing polymer (c) Right side view of the liquid treatment filter according to the present invention before reacting with the water-absorbing polymer (d) Right side view of the liquid treatment filter according to the present invention after reacting with the water-absorbing polymer [Figure 4] Front view showing another embodiment of the liquid treatment filter according to the present invention

Mode for Carrying Out the Invention

[0018] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited by this embodiment. FIG. 1(a) is a perspective view of the liquid treatment filter according to the present invention, and FIG. 1(b) is a front view of the liquid treatment filter according to the present invention. Further, FIG. 1(c) is a right side view of the liquid treatment filter according to the present invention, and FIG. 1(d) is a cross-sectional view taken along the line A-A of FIG. 1(b). The outline of the liquid treatment filter according to the present invention will be described below using these figures.

[0019] The liquid treatment filter 10 according to the present invention is used in a device that sucks a liquid by suction force, and has a bag-shaped filter body 1 having an opening 1a and air permeability, sheet bodies 2A and 2B containing a water-absorbing polymer 2a placed inside the filter body 1, and a plate-shaped support 3 having a liquid suction port 3a attached to the opening 1a of the filter body 1.

[0020] The bag-shaped filter body 1 is partitioned into at least three accommodation spaces 1A, 1B, and 1C by side walls 5a, 5b, 6a, and 6b formed of a non-woven fabric. The central accommodation space 1A communicates with the opening 1a and is a space for accommodating the sucked liquid. The sheet bodies 2A and 2B are accommodated in each of the accommodation spaces 1B and 1C on both sides where the wall surface is adjacent to the central accommodation space 1A.

[0021] Further, as shown in FIG. 1(d), it is also possible to adopt a configuration in which side walls 7a and 7b are provided outside the side walls 6a and 6b to form accommodation spaces 1D and 1E, whereby the effect of preventing the moisture of the sucked liquid material from leaking out of the filter body can be further enhanced.

[0022] Furthermore, it is preferable to use a non-woven fabric having air permeability and moisture permeability for the side walls 5a and 5b. Also, it is preferable to use a film having air permeability for the side walls 6a and 6b or the side walls 7a and 7b.

[0023] The filter body 1 is formed in a bag shape by joining at least both side ends 1b, 1c, and 1d of two opposing surfaces. Thereby, the number of joining portions of the filter body can be reduced, so that it is possible to prevent the moisture of the liquid material from leaking out of the filter body. Also, since the area of the sheet body increases, more moisture of the liquid material can be absorbed. Further, since the areas of the accommodation spaces 1B and 1C formed between the filter body 1 and the sheet bodies 2A and 2B can be reduced, the moisture of the sucked liquid material can be more surely reacted with the water-absorbing polymer.

[0024] In the embodiments of the present invention, the central accommodation space for accommodating the liquid material is surrounded by two accommodation spaces including the sheet body, and the moisture of the liquid material and the water-absorbing polymer of the sheet body are configured to be able to react efficiently. However, a configuration in which the central accommodation space is surrounded by a plurality of accommodation spaces is also included in the present invention. Specifically, it is assumed that the central accommodation space has a substantially quadrangular prism shape, and four accommodation spaces are formed on the side surface and one accommodation space is formed on the bottom surface. The number and shape of the accommodation spaces can be appropriately selected according to the installation space.

[0025] The support 3 is in the form of a plate having a substantially square shape when viewed from the front, and a circular liquid material suction port 3a is formed at the center. One end of a U-shaped tube (not shown), which is a component on the suction device side, is inserted into the liquid material suction port 3a. Also, cutouts 3b are formed at two locations on the side portion of the support 3, and these cutouts 3b function as attachment portions to be attached to the suction device side.

[0026] Figure 2(a) is a perspective view showing the manufacturing process of the liquid processing filter according to the present invention. The sheet bodies 2A and 2B are formed by folding the sheet body 2c in half down the middle, and inside they contain cotton 2b containing water-absorbent polymer powder 2a. This allows the moisture from the liquid to react with the water-absorbent polymer powder 2a at various points in the bag-shaped filter body 1, preventing leakage from the filter body 1. An example of a material used for the sheet body 2c is airlaid nonwoven fabric.

[0027] Furthermore, the configuration of the sheet body is not limited to the embodiments of the present invention. The present invention includes any configuration in which the aggregate of water-absorbent polymers can move as a single unit, such as a configuration in which cotton 2b containing water-absorbent polymer powder 2a is sandwiched between two sheet body bodies, or a configuration in which cotton 2b containing water-absorbent polymer powder 2a is formed inside a bag-shaped sheet body body.

[0028] Figure 2(b) is an enlarged cross-sectional view of the sheet body constituting the liquid processing filter according to the present invention. As shown in this figure, the water-absorbing polymer powder 2a is held in the gaps between the cotton fibers 2b, so that it is not possible to make it bloat on the lower part of the sheet body 2c due to gravity. In addition, since the water-absorbing polymer powder 2a has sufficient gaps around it, it can absorb moisture from the liquid and expand.

[0029] Figure 3(a) is a front view of the liquid processing filter according to the present invention before it reacts with the superabsorbent polymer, and Figure 3(c) is a right side view thereof. As shown in Figure 3(a), the vertical length A and horizontal length C of the sheet body 2A when viewed from above are designed to be in the range of approximately 90% to 97% of the vertical length B and horizontal length D of the filter body 1 when viewed from above. As a result, the area of ​​the sheet body 2A when viewed from above can be in the range of 81% to 94% of the area of ​​the filter body 1 when viewed from above.

[0030] As described above, by limiting the size of the sheet body 2A containing the superabsorbent polymer, the absorbed liquid can be reliably reacted with the granular superabsorbent polymer 2a, thus preventing moisture from seeping out of the filter body 1. Furthermore, since the sheet body 2A has little effect on the air permeability of the bag-shaped filter body 1, a decrease in the suction power of the suction device can be prevented.

[0031] Furthermore, since the filter body 1 has a tapered shape with no bottom surface formed at the bottom before the liquid is drawn in, the space formed between the filter body 1 and the sheet body 2A (2B) can be reduced, allowing the moisture of the drawn-in liquid to react more reliably with the superabsorbent polymer. Also, since the liquid flows down to the bottom while contacting the inner wall surface of the bag-shaped filter body, the moisture of the liquid can be efficiently absorbed throughout the filter body. In addition, since it is possible to prevent the liquid from strongly impacting the bottom of the filter body, damage to the filter body and leakage of moisture from the liquid can be prevented.

[0032] Figure 3(b) is a front view of the liquid processing filter according to the present invention after it has reacted with the superabsorbent polymer, and Figure 3(d) is a right side view thereof. As shown in these figures, when the water from the liquid reacts with the granular superabsorbent polymer 2a, it expands, and the superabsorbent polymer 5 that has reacted with the water protrudes from the sheet body 2A (2B) and accumulates in the containment space 1B (1C) of the bag-shaped filter body 1. Then, the sheet body 2A (2B) moves as a whole in the direction of the arrow in accordance with the expansion of the superabsorbent polymer 5.

[0033] Thus, since the sheet body 2A (2B) can move freely within the containment space 1B (1C) of the filter body 1 in accordance with the expansion of the superabsorbent polymer 5, the entire filter body 1 can expand, allowing for efficient absorption of moisture. Furthermore, because the expansion of the superabsorbent polymer is not easily suppressed, the performance of the superabsorbent polymer can be fully utilized. In addition, it is possible to prevent the expansion of the filter body 1 from concentrating locally and blocking the central containment space 1A, thereby preventing the inflow of liquid from being obstructed.

[0034] Furthermore, by limiting the area of ​​the sheet body 2A (2B) when viewed from above to a range of 81% to 94% of the area of ​​the filter body 1 when viewed from above, it is possible to ensure both sufficient space for the sheet body 2A (2B) to move freely within the containment space 1B (1C) of the filter body 1 and sufficient surface area for the moisture in the liquid to react reliably with the water-absorbing polymer.

[0035] Furthermore, the number of sheet bodies is not limited to the embodiments of the present invention, and it is also possible to arrange multiple sheet bodies within a single containment space. In that case, other sheet bodies will move to avoid sheet bodies that have expanded due to reaction with the moisture in the liquid, so that the sheet bodies are positioned appropriately to fill the gaps in the filter body, thereby enabling more efficient absorption of moisture.

[0036] Figure 4 is a front view showing another embodiment of the liquid processing filter according to the present invention. In this embodiment, the liquid processing filter 10 has an airtight sheet layer 4 on the side surface of the filter body 1 near the liquid suction port 3a. This part is difficult to react with the superabsorbent polymer because the tip of the U-shaped tube, which is part of the suction device, is inserted through the liquid suction port 3a. However, the airtight sheet layer 4 prevents leakage from the side surface of the filter body. Furthermore, since there is no need to place the sheet body 2A near the liquid suction port 3a, it is possible to prevent the expansion of the superabsorbent polymer from blocking the liquid suction port 3a. The other configurations are the same as those of the liquid processing filter 10 described in Figures 1 to 3, so their description is omitted. [Industrial applicability]

[0037] The liquid processing filter according to the present invention is used by being attached to a suction device for sucking up and processing liquids. [Explanation of symbols]

[0038] 1 filter 1A, 1B, 1C, 1D, 1E Containment space 1a opening 1b, 1c, 1d Both ends 2A, 2B Sheet Body 2a Powdered superabsorbent polymer 2b cotton 2c Sheet body 3 Support 3a Liquid suction port 3b notch 4. Non-breathable sheet layer 5. Superabsorbent polymer reacted with moisture 5a, 5b, 6a, 6b, 7a, 7b wall 10 Liquid Processing Filter

Claims

1. In a liquid processing filter used in a device that sucks up liquids by suction force, A bag-shaped filter body having an opening and being breathable, A sheet containing a water-absorbing polymer is placed inside the filter body, A liquid processing filter having a plate-shaped support having a liquid suction port attached to the opening of the filter body, The bag-shaped filter body is divided into three containment spaces, the central containment space which communicates with the opening and contains the aspirated liquid, and is formed into a bag shape by joining the ends of two opposing surfaces. The sheet body is housed in each of the adjacent storage spaces, including the central storage space and the wall space. A liquid processing filter characterized in that the area of ​​the sheet body when viewed from above is in the range of 81% to 94% of the area of ​​the filter body when viewed from above, and the sheet body is movable within the containment space.

2. In a liquid processing filter used in a device that sucks up liquids by suction force, A bag-shaped filter body having an opening and being breathable, A sheet containing a water-absorbing polymer is placed inside the filter body, A liquid processing filter having a plate-shaped support having a liquid suction port attached to the opening of the filter body, The bag-shaped filter body is divided into three containment spaces, the central containment space is in communication with the opening and is a space in which the aspirated liquid is contained, and near the liquid suction port, the filter body has an airtight sheet layer on its side surface. The sheet body is housed in each of the adjacent storage spaces, including the central storage space and the wall space. A liquid processing filter characterized in that the area of ​​the sheet body when viewed from above is in the range of 81% to 94% of the area of ​​the filter body when viewed from above, and the sheet body is movable within the containment space.

3. In a liquid processing filter used in a device that sucks up liquids by suction force, A bag-shaped filter body having an opening and being breathable, A sheet body is placed inside the aforementioned filter body, contains cotton, the cotton contains a powdered superabsorbent polymer, and is formed by folding the sheet body in half in the middle, A liquid processing filter having a plate-shaped support having a liquid suction port attached to the opening of the filter body, The bag-shaped filter body is divided into three containment spaces, the central containment space which communicates with the opening and contains the aspirated liquid. A liquid processing filter characterized in that the sheet body is housed in each of the adjacent storage spaces, including the central storage space and the wall space.

4. The liquid processing filter according to any one of claims 1 to 3, characterized in that the filter body has a tapered shape with no bottom surface formed at the bottom when the liquid is not yet drawn in.

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