Separable-type bottle-top filter device

Abstract

The present invention relates to a separable-type bottle-top filter device comprising: a first coupling body having therein an internal space in which a sample is accommodated and having, at the lower portion thereof, an outlet through which the sample is discharged; a second coupling body which is detachably coupled to the lower portion of the first coupling body and has a discharge member for discharging, to one side, the sample discharged through the outlet; and a membrane filter provided between the first and second coupling bodies to filter a target material included in the sample discharged through the discharge member. The separable-type bottle-top filter device according to the present invention comprises first and second coupling bodies which are detachably coupled to each other and a membrane filter, and thus, even if a defect occurs in a portion of the device, the defective portion can be replaced for reuse of the device, and the filter can also be easily replaced.

Description

Separate type bottle top filter device

[0001] The present invention relates to a separation type bottle top filter device, and more particularly, to a separation type bottle top filter device that is detachably combined into a plurality of components including a membrane filter.

[0002] A filter device is a device that filters out solid particles contained in a liquid sample or separates some of the substances that make up the liquid sample. Various filter devices are being developed to increase filtration efficiency, filtration speed, and stability.

[0003] This conventional filter device is composed of a rubber stopper that blocks the entrance of a recovery container that holds a filtered sample, a funnel that is connected to a sample container containing a sample before being filtered at the upper end and is inserted into a fastening hole provided in the rubber stopper at the lower end and fastened, a filter provided on the inner surface of the funnel, a fixing plate that prevents the filter from coming into close contact with the lower opening of the funnel, and a vacuum pump that sucks air inside the recovery container via a vacuum hose that is inserted into a hole provided at the upper end of the recovery container.

[0004] However, since the conventional filter device has a funnel with a filter installed formed as one piece, if a defect occurs in a part, the entire device must be replaced, and it is not easy to replace the filter.

[0005] The present invention was created to improve the above-mentioned problems, and its purpose is to provide a separation-type bottle top filter device comprising first and second combined bodies and a membrane filter that are detachably coupled to each other.

[0006] In order to achieve the above object, a separation type bottle top filter device according to the present invention comprises a first combined body having an internal space for accommodating a sample therein and an outlet formed at the bottom through which the sample is discharged, a second combined body detachably coupled to the bottom of the first combined body and having an outlet member for discharging the sample discharged through the first outlet to one side, and a membrane filter installed between the first and second combined bodies so as to filter a target substance included in the sample discharged through the outlet member.

[0007] The second coupling body has an insertion space formed inside with an open upper portion so that the lower portion of the first coupling body can be fitted.

[0008] The first coupling body is formed in an insertion groove on the outer surface of the lower portion that is inserted into the interior of the first coupling body, and the second coupling body has an insertion protrusion formed on the inner surface so that the first coupling body can be inserted into the insertion groove when inserted into the insertion space.

[0009] The first coupling body is formed so that the upper portion of the insertion groove has an outer diameter smaller than the inner diameter of the second coupling body so that the second coupling body can be easily inserted.

[0010] The first coupling body may have a closing protrusion formed on the outer surface thereof so as to close the upper portion of the space between the first coupling body and the second coupling body when coupled to the second coupling body.

[0011] It is preferable that the above-mentioned closed protrusion be formed so as to protrude in a direction in which the outer diameter thereof expands on the outer surface of the first connecting body at a position spaced upward from the insertion groove by a distance corresponding to the distance from the insertion protrusion to the upper surface of the second connecting body so that the lower surface thereof can contact the upper surface of the second connecting body.

[0012] The second connecting body has a filter mounting member formed on the inner bottom surface facing the lower edge of the first connecting body so that the membrane filter is mounted thereon by the first connecting body inserted into the insertion space. The filter mounting member protrudes upward so that the membrane filter is mounted thereon.

[0013] The first coupling body may have a protrusion formed so as to protrude from the lower edge toward the center so as to expand the contact area with the membrane filter mounted on the filter mounting member.

[0014] The above-mentioned protrusion may be formed so that its end protrudes toward the center of the first coupling body more than the filter mounting member to prevent the sample from leaking between the first and second coupling bodies.

[0015] The second combined body has an outlet formed at the bottom through which a sample passing through the membrane filter is discharged, and at least one guide channel extending from the outlet toward the inner wall surface is provided so as to guide the sample passing through the membrane filter to the outlet, and a plurality of upwardly protruding projections may be formed on the inner bottom surface excluding the guide channel to prevent the membrane filter from coming into close contact with the bottom surface.

[0016] The above discharge member protrudes downward from the lower surface of the second combined body, and has an outlet passage formed therein that is connected to the outlet port and has an open lower portion.

[0017] The separation type bottle top filter device according to the present invention is composed of first and second combined bodies and a membrane filter that are detachably coupled to each other, so that even if a defect occurs in a part, the part where the defect occurred can be replaced and reused, and the filter can be easily replaced.

[0018] Figure 1 is a perspective view of a separation type bottle top filter device according to an embodiment of the present invention.

[0019] Fig. 2 is an exploded perspective view of the separation type bottle top filter device of Fig. 1.

[0020] Fig. 3 is a cross-sectional view of the separation type bottle top filter device of Fig. 1,

[0021] Fig. 4 is a partial cross-sectional view of the separation type bottle top filter device of Fig. 1,

[0022] Fig. 5 is a plan view of the second combined body of the separation type bottle top filter device of Fig. 1.

[0023] Figure 6 is a partial cross-sectional view of a separation type bottle top filter device according to another embodiment of the present invention.

[0024] FIG. 7 is a perspective view of a separation type bottle top filter device according to another embodiment of the present invention.

[0025] Hereinafter, a separation-type bottle-top filter device according to an embodiment of the present invention will be described in detail with reference to the attached drawings. The present invention can be modified in various ways and can take various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, but it should be understood that the invention includes all modifications, equivalents, and substitutes included in the spirit and technical scope of the present invention. In describing each drawing, similar reference numerals are used to indicate similar components. In the attached drawings, the dimensions of structures are illustrated larger than actual size to ensure clarity of the present invention.

[0026] While terms like "first" and "second" may be used to describe various components, these components should not be limited by these terms. These terms are used solely to distinguish one component from another. For example, without departing from the scope of the present invention, a first component could be referred to as a "second component," and similarly, a second component could also be referred to as a "first component."

[0027] The terminology used in this application is only used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, it should be understood that the terms "comprise" or "have" indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0028] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0029] FIGS. 1 to 5 illustrate a separation type bottle top filter device (100) according to an embodiment of the present invention.

[0030] Referring to the drawing, the above-described separation type bottle top filter device (100) comprises a first combined body (200) having an internal space (201) for accommodating a sample therein and a discharge port (203) formed at the bottom through which the sample is discharged, a second combined body (300) detachably coupled to the bottom of the first combined body (200) and having a discharge member (310) for discharging the sample discharged through the first discharge port (203) to one side, and a membrane filter (400) installed between the first and second combined bodies (200, 300) so as to filter a target substance included in the sample discharged through the discharge member (310).

[0031] The first coupling body (200) is formed in a cylindrical shape with an internal space (201) provided therein, and the upper part is formed to be open so that a sample can be easily introduced into the internal space (201). In addition, the first coupling body (200) has a number of graduations (202) formed on the side and spaced apart from each other in the vertical direction so that the operator can recognize the amount of the sample introduced into the internal space (201). Meanwhile, the first coupling body (200) has an outer cover (210) detachably attached to the upper part so that the open upper surface can be opened and closed.

[0032] In addition, the first coupling body (200) is provided with an insertion portion at the bottom to be inserted into the second coupling body (300), and the insertion portion is formed to have a smaller outer diameter than the upper portion of the first coupling body (200). In addition, an outlet (203) is formed to penetrate vertically on the lower surface of the first coupling body (200). The sample within the internal space (201) is discharged downward through the outlet (203).

[0033] Meanwhile, the first coupling body (200) has an insertion groove (204) formed on the outer surface of the insertion portion that is inserted into the interior of the first coupling body (200). The insertion groove (204) is formed at a position spaced a predetermined distance upward from the lower end of the first coupling body (200) so as to be inserted inward with respect to the outer surface of the first coupling body (200). At this time, it is preferable that the insertion groove (204) is formed in a circular shape along the circumferential direction of the first coupling body (200).

[0034] In addition, the first coupling body (200) is formed so that the upper portion of the insertion groove (204) has an outer diameter smaller than the inner diameter of the second coupling body (300) so that the second coupling body (300) can be easily inserted.

[0035] Meanwhile, the first coupling body (200) has a closing projection (220) formed on the outer surface thereof so as to close the upper portion of the space between the first coupling body (200) and the second coupling body (300) when coupled to the second coupling body (300). The closing projection (220) is formed on the outer surface of the first coupling body (200) at a position spaced upwardly from the insertion groove (204) so ​​that the lower surface thereof can contact the upper surface of the second coupling body (300). That is, the closing projection (220) is formed on the outer surface of the first coupling body (200) at a position spaced upwardly from the insertion groove (204) by a distance corresponding to the distance from the insertion projection (320) of the second coupling body (300) to the upper surface of the second coupling body (300), which will be described later. At this time, the closed protrusion (220) is preferably formed to protrude in the direction in which the outer diameter of the first connecting body (200) expands, and is preferably formed to extend in a circular shape along the circumferential direction. The closed protrusion (220) prevents the sample from leaking between the first and second connecting bodies (200, 300).

[0036] In addition, the first coupling body (200) has a grip protrusion (230) formed at the lower end to expand the contact area with the membrane filter (400) installed inside the second coupling body (300) when coupled to the second coupling body (300). The grip protrusion (230) protrudes from the lower edge of the first coupling body (200) toward the center. At this time, it is preferable that the grip protrusion (230) extends in a circular shape along the circumference of the first coupling body (200). The first coupling body (200) can grip the membrane filter (400) more firmly by the grip protrusion (230).

[0037] The second connecting body (300) is formed in a cylindrical shape with an insertion space (301) formed at the top thereof so that the lower portion, i.e., the insertion portion, of the first connecting body (200) can be fitted therein. The second connecting body (300) is formed to have an inner diameter corresponding to the outer diameter of the first connecting body (200) below the insertion groove (204) so ​​that the outer surface of the lower portion of the first connecting body (200) is in close contact with it.

[0038] In addition, the second combined body (300) is formed with an outlet (302) at the bottom through which a sample that has passed through the membrane filter (400) is discharged. The outlet (302) is formed to penetrate vertically in the central portion of the lower surface of the second combined body (300). The discharge member (310) protrudes downward with respect to the lower surface of the second combined body (300) and is formed in a cylindrical shape with an outlet path formed therein that is connected to the outlet (302) but has an open lower portion.

[0039] Meanwhile, the second coupling body (300) is formed with an insertion protrusion (320) on the inner surface so that the first coupling body (200) can be inserted into the insertion groove (204) of the first coupling body (200) when the first coupling body (200) is inserted into the insertion space (301). The insertion protrusion (320) is formed on the inner surface of the second coupling body (300) at a position spaced upward from the bottom surface of the insertion space (301) by a predetermined distance, and protrudes toward the center of the insertion space (301). In addition, the insertion protrusion (320) extends in a circular shape along the circumferential direction, and the upper and lower surfaces are formed to be inclined at a predetermined angle with respect to the inner surface of the second coupling body (300) so that the insertion protrusion (320) can be easily inserted into the insertion groove (204).

[0040] In addition, the second coupling body (300) is formed with a skirt member (330) at the bottom so that it can be coupled to the upper inlet of the receiving container (15). The skirt member (330) extends in an annular shape with a predetermined radius centered on the outlet (302) so that an inlet space (332) into which the upper end of the receiving container (15) can be inserted is formed. The skirt member (330) is formed to protrude downward with respect to the lower surface of the second coupling body (300). The upper end of the receiving container (15) is inserted into the space created by the skirt member (330) and coupled to the second coupling body (300). At this time, the discharge member (310) of the second coupling body (300) can be formed so that the lower end is inserted into the inner side of the receiving container (15) through the upper inlet of the receiving container (15).

[0041] Meanwhile, the skirt member (330) is provided with a suction pipe (333) so as to be connected to an air pump (not shown). The suction pipe (333) has a path formed therein through which air flows, and one end thereof is connected to the skirt member (330) so as to be in communication with the inlet space (332). In addition, the other end of the suction pipe (333) is formed to be open so as to be in communication with a connecting pipe (not shown) connected to the air pump. The air pump is connected to the suction pipe (333) through the connecting pipe as described above, and provides suction force to the interior of the skirt member (330) through the suction pipe (333). As the air in the inlet space (332) of the skirt member (330) and the internal space (201) of the first joint body (200) is discharged to the outside by the suction force provided by the air pump, the sample in the first joint body (200) passes through the membrane filter (400) and is drawn into the receiving container (15).

[0042] Meanwhile, the skirt member (330) is formed with a fastening groove (331) so that a fixing projection (not shown) formed on the upper outer surface of the receiving container (15) can be inserted, as shown in Fig. 7. The fastening groove (331) extends upward from the lower end of the skirt member (330), and the upper end is formed to extend in a curved manner along the circumferential direction.

[0043] In addition, the second coupling body (300) has a filter mounting member (340) formed therein so that the membrane filter (400) is held by the first coupling body (200) inserted into the insertion space (301). The filter mounting member (340) is formed on the inner bottom surface facing the lower edge of the first coupling body (200) inserted into the insertion space (301), and is formed to protrude upward with respect to the bottom surface of the insertion space (301) so that the upper surface contacts the lower end of the first coupling body (200). Here, the filter mounting member (340) is adjacent to the inner surface of the second coupling body (300), extends in an annular shape along the circumferential direction, and the upper surface is preferably formed flat so that the lower surface of the membrane filter (400) can be supported. When the first coupling body (200) is inserted into the second coupling body (300), the membrane filter (400) is held by the lower portion of the first coupling body (200) and the filter mounting member (340), so that the membrane filter (400) can be firmly fixed inside the second coupling body (300). At this time, it is preferable that the upper surface of the filter mounting member (340) be formed to have an area corresponding to the lower portion of the first coupling body (200) and the holding protrusion (230).

[0044] And the second combined body (300) is provided with a plurality of guide channels (303) extending from the outlet (302) toward the inner wall surface so that the sample that has passed through the membrane filter (400) can be guided to the outlet (302). The guide channels (303) are linearly extended so that one end is adjacent to the outlet (302) and the other end is adjacent to the filter mounting member (340). Here, although not shown in the drawing, the guide channels (303) may be formed to be inserted downward to a predetermined depth with respect to the bottom surface of the second combined body (300). The plurality of guide channels (303) are arranged radially with the outlet (302) as the center. Meanwhile, in the illustrated example, a structure in which 14 induction channels (303) are formed is illustrated, but this is not limited thereto, and the number of induction channels (303) may be 13 or less or 15 or more depending on the size of the second combined body (300). The sample that has passed through the membrane filter (400) by the above-described induction channels (303) can be easily guided to the outlet (302).

[0045] Meanwhile, it is preferable that the induction path (303) be formed such that a virtual line extending along the longitudinal direction is spaced apart from the center of the corresponding outlet (302) so that the sample discharged through the outlet (302) can flow downward while rotating along the inner wall surface of the discharge member (310).

[0046] In addition, the second coupling body (300) has a plurality of spacer protrusions (304) formed therein to prevent the membrane filter (400) from coming into close contact with the bottom surface. The spacer protrusions (304) are formed to protrude upward on the inner bottom surface of the second coupling body (300) excluding the guide passages (303). At this time, it is preferable that a plurality of spacer protrusions (304) are arranged to be spaced apart from each other, and are formed between the guide passages (303). Since the membrane filter (400) is supported to be spaced upward with respect to the bottom surface of the second coupling body (300) by the spacer protrusions (304), the sample can pass through the membrane filter (400) more smoothly.

[0047] Meanwhile, a guide member (350) is installed inside the discharge member (310) of the second combined body (300) to guide the sample discharged through the outlet (302). The guide member (350) is installed inside the discharge member (310) at a position spaced downward from the bottom surface of the insertion space (301) of the second combined body (300), and a plurality of guide holes (351) are formed to allow the sample to pass through. At this time, the guide holes (351) are formed to penetrate in the vertical direction, and are preferably formed at a position adjacent to the inner wall surface of the discharge member (310) so as to guide the sample to the inner wall surface of the discharge member (310). In addition, the guide holes (351) are each formed in the guide member (350) at a position adjacent to one end of the guide channel (303) so as to easily guide the sample introduced into the outlet (302) along the guide channel (303). Since the sample passing through the outlet (302) is guided to the inner wall surface of the discharge member (310) by the above-described guide member (350), it can flow out more smoothly into the receiving container (15). Meanwhile, although not shown in the drawing, a plurality of guide protrusions may be formed on the inner wall surface of the discharge member (310) so as to guide the sample passing through the guide member (350). The guide protrusions extend in the vertical direction so that the upper end is adjacent to the guide hole (351) of the guide member (350) and the lower end is adjacent to the lower end of the discharge member (310). At this time, the guide protrusions may be formed to extend in a spiral shape so as to guide the sample to rotate along the inner wall surface of the discharge member (310).

[0048] The membrane filter (400) is formed in a circular shape with a predetermined thickness so that it can be inserted into the interior of the second coupling body (300). At this time, it is preferable that the membrane filter (400) be formed to have an outer diameter corresponding to the inner diameter of the second coupling body (300) so that the edge thereof can be secured to the filter mounting member (340) and held by the first coupling body (200). Since the membrane filter (400) is a membrane generally used to detect a target substance such as an antibody in a sample, a detailed description thereof will be omitted.

[0049] The separation type bottle top filter device (100) according to the present invention, which is configured as described above, is composed of first and second combined bodies (200, 300) and a membrane filter (400) that are detachably coupled to each other, so that even if a defect occurs in a part, the part where the defect occurs can be replaced and reused, and the filter can be easily replaced.

[0050] Meanwhile, FIG. 6 illustrates a phage projection (290) of a separation type bottle top filter device (100) according to another embodiment of the present invention.

[0051] Elements that have the same function as those in the previously illustrated drawings are indicated with the same reference numerals.

[0052] Referring to the drawing, the grip protrusion (290) is formed such that its end protrudes toward the center of the first coupling body (200) more than the filter mounting member (340) to prevent the sample from leaking between the first and second coupling bodies (200, 300). Since the end of the grip protrusion (290) protrudes more than the filter mounting member (340), it interferes with the sample flowing to the membrane filter (400) and guides it toward the induction path (303). Therefore, the amount of the sample flowing between the grip protrusion (290) and the filter mounting member (340) is reduced, thereby preventing the sample from leaking between the first and second coupling bodies (200, 300). In addition, the phage projection (290) supports the upper part of the membrane filter (400) with an end that protrudes more than the filter mounting member (340), thereby preventing the membrane filter (400) from lifting and supporting it firmly.

[0053] The description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments disclosed herein, but is to be construed in the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A first combined body having an internal space for accommodating a sample therein and an outlet formed at the bottom through which the sample is discharged; A second combined body, which is detachably coupled to the lower portion of the first combined body and has a discharge member provided to discharge the sample discharged through the first discharge port to one side; and A membrane filter installed between the first and second combined bodies to filter the target substance included in the sample discharged through the discharge member; Separate type bottle top filter device.

2. In paragraph 1, The second coupling body has an insertion space formed inside with an open upper portion so that the lower portion of the first coupling body can be fitted. Separate type bottle top filter device.

3. In paragraph 2, The above first joint body is formed in an insertion groove on the outer surface of the lower part that is introduced into the interior of the above first joint body, The second joint body has an insertion projection formed on the inner surface so that the first joint body can be inserted into the insertion groove when inserted into the insertion space. Separate type bottle top filter device.

4. In paragraph 3, The first coupling body is formed so that the upper portion of the insertion groove has an outer diameter smaller than the inner diameter of the second coupling body so that the second coupling body can be easily inserted. Separate type bottle top filter device.

5. In paragraph 4, The above first coupling body has a closing protrusion formed on the outer surface so that the upper portion of the space between the first coupling body and the second coupling body can be closed when coupled to the second coupling body. Separate type bottle top filter device.

6. In paragraph 5, The above closed protrusion is formed on the outer surface of the first joint body at a position spaced upward from the insertion groove by a distance corresponding to the distance from the insertion protrusion to the upper surface of the second joint body so that the lower surface can contact the upper surface of the second joint body, and the outer diameter thereof is expanded. Separate type bottle top filter device.

7. In paragraph 2, The second connecting body has a filter mounting member formed on the inner bottom surface facing the lower edge of the first connecting body so that the membrane filter is mounted thereon by the first connecting body inserted into the insertion space. Separate type bottle top filter device.

8. In paragraph 7, The first joint body has a protrusion formed so as to protrude from the lower edge toward the center so as to expand the contact area for the membrane filter mounted on the filter mounting member. Separate type bottle top filter device.

9. In paragraph 8, The above-mentioned protrusion is formed so that its end protrudes toward the center of the first joint body more than the filter mounting member to prevent the sample from leaking between the first and second joint bodies. Separate type bottle top filter device.

10. In paragraph 2, The second combined body has an outlet formed at the bottom through which a sample passing through the membrane filter is discharged, and at least one guide channel extending from the outlet toward the inner wall surface is provided so as to guide the sample passing through the membrane filter to the outlet, and a plurality of upwardly protruding projections are formed on the inner bottom surface excluding the guide channel to prevent the membrane filter from coming into close contact with the bottom surface. Separate type bottle top filter device.

11. In paragraph 10, The above discharge member protrudes downward from the lower surface of the second combined body, and has an outlet path formed inside that is connected to the outlet but has an open lower portion. Separate type bottle top filter device.

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