JP3063683U - Filter suction filter and stopper device - Google Patents

Abstract

(57) Abstract: A first space (82) and a second space (84) when a first substrate (12) is not arranged on a second substrate (14).
When the first substrate 12 is disposed on the second substrate 14, the first space 82 and the second space 84 communicate with each other, and no pressure difference is generated between the two spaces. Thus, there is provided a filter suction filtration device 10. An operating member (58) is supported at a fulcrum (62) of a second substrate (14), and has a first portion supporting a plug (46) and a first substrate (12) on the second substrate (14). Projecting above the second substrate 14 with no plug
Is held in the first position, and with the first substrate 12 disposed on the second substrate 14,
In a second position.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a filter suction filtration device for sucking a liquid, filtering the liquid with a filter, and separating a substance contained in the liquid, and a stopper device suitably usable for the filter suction filtration device.

[0002]

[Prior art]

 Conventionally, a filter suction filtration device shown in FIG. 5 has been proposed. The filter suction filtration device 100 has three substrates that can be separated from each other—a first substrate 102 in an upper stage, a second substrate 104 in a middle stage, and a third substrate 106 in a lower stage. The upper first substrate 102 has a plurality of holes 108, and a filter container 110 is mounted in each of these holes 108. The second substrate 104 in the middle stage also has a plurality of holes 112, and a filter container 114 is mounted in each of these holes 112. The first substrate 102 and the second substrate 104 form a first space 116 therebetween, and the first space 116 is connected to a suction device (vacuum pump) 120 via a switching valve 118. It is connected to the. The lower third substrate 106 forms a second space 122 with the second substrate 104, and the second space 122 is connected to the suction device 120 via the switching valve 124. .

When a liquid is filtered using the filter suction filtration device 100 having such a configuration, the liquid is first filled in a filter container 110. In this state, the switching valves 118 and 124 are switched to introduce the same negative pressure into the first space 116 and the second space 122. As a result, the liquid filled in the filter container 110 is filtered by the filter 126 stored in the filter container 110, and the filtrate falls into the filter container 114. When the liquid contained in the filter container 114 is filtered, the first space 116 is returned to the atmospheric pressure, the switching valve 124 is switched, and a negative pressure is introduced into the second space 122. As a result, the liquid in the filter container 114 is filtered by the filter 128 accommodated in the filter container 114 and falls onto the liquid receiving tray 130 disposed on the third substrate 106.

[0004]

[Problems to be solved by the invention]

 However, in the filter suction / filtration apparatus 100, the first space 116 and the second space 122 are connected to the suction device 120, respectively, due to a difference in the length of the tube, and a difference in deterioration of the switching valves 118, 124, etc. There is a difference between the pressure loss from the first space 116 to the suction device 120 and the pressure loss from the second space 122 to the suction device 120. As a result, when the suction device 120 is started, a situation occurs in which a difference is generated between the negative pressure introduced into the first space 116 and the negative pressure introduced into the second space 122. Then, for example, when the pressure in the first space 116 is higher than the pressure in the second space 122, the liquid that has fallen into the filter container 114 is immediately filtered by the filter 128 without remaining in the filter container 114. There is a problem that it is sucked into the second space 122. Conversely, when the pressure in the first space 116 is lower than the pressure in the second space 122, the air in the second space 122 blows out to the first space 116 via the filter 128 of the filter container 114. However, there is a problem that the liquid stored in the filter container 114 blows out due to the impact at that time, and precious liquid is lost.

Therefore, the present invention does not allow the first space and the second space to communicate with each other when the first substrate 12 is not disposed on the second substrate 14, Provided is a filter suction / filtration device which communicates a first space and a second space in a state where the first substrate 12 is disposed thereon so as not to generate a pressure difference between the two spaces during suction. With the goal. The present invention also provides a stopper device that can be suitably used for such a filter suction filtration device.

[0006]

[Means for Solving the Problems]

 In order to achieve these objects, the filter suction filtration device 10 of the present invention comprises: (a) a first substrate 12 having at least one first hole 30; (b) at least one communication hole 24; And at least one second hole 22 corresponding to the first hole 30, wherein the second hole 22 is positioned below the first hole 30 and the first substrate 12 is A second substrate 14 disposed below and forming a first space 82 with the first substrate 12; and (c) disposed below the second substrate 14 and (D) a first filter container 70 attached to each of the first holes 30, (e) a second space 84 between the substrate 14 and the second substrate 84. A second filter container 72 attached to each of the holes 22; A suction unit 42 for introducing a negative pressure into the second filter container 82 and the second space 84 to filter the liquid held in the first filter container 70 and drop the liquid into the second filter container 72; In a state where the first substrate 12 is not arranged on the second substrate 14, it occupies a first position in which the communication hole 24 is closed, and the first substrate 12 is placed on the second substrate 14. And a plug device 44 occupying a second position for opening the communication hole 24 in a state in which is disposed.

In another embodiment of the filter suction filtration device of the present invention, the stopper device 44 includes a stopper 46, a fulcrum 62 provided on the second substrate 14, and supported by the fulcrum 62. A first portion to be supported, and a first portion protruding upward from the second substrate 14 in a state where the first substrate 12 is not arranged on the second substrate 14, and the stopper 46 is connected to the first portion. And a second portion for holding the plug 46 in the second position by engaging with the first substrate 12 in a state where the first substrate 12 is disposed on the second substrate 14 and the first substrate 12 is disposed on the second substrate 14. And an operating member 58 having:

In the plug device of the present invention, the second substrate 14 having the second filter container 72 is disposed under the first substrate 12 having the first filter container 70 and the second substrate 14 is provided under the second substrate 14. A third substrate 16 is disposed on the first substrate 12, and a first space 82 is formed between the first substrate 12 and the second substrate 14 and between the second substrate 14 and the third substrate 16. A second space 84 is formed, and while the first space 82 and the second space 84 are maintained at a constant negative pressure, a material is filtered through the first filter container 70 to form the second filter capacity. The filter is used for the filter suction filtration device 10 to be dropped into the vessel 72, and is connected to the communication hole 24 formed in the second substrate 14 so as to communicate the first space 82 and the second space 84. A first position that is disposed to face and closes the communication hole 24; A stopper 46 that can move between a second position that opens the hole 24 and a stopper 46 that is provided on the second substrate 14 and the first substrate 12 is not disposed on the second substrate 14 An operating member 58 for holding the stopper 46 at the first position in the state and holding the stopper 46 at the second position with the first substrate 12 disposed on the second substrate 14. It is characterized by having.

In another embodiment of the plug device of the present invention, the operating member 58 is supported by a fulcrum 62 of the second substrate 14 and supports a first portion supporting the plug 46 and the second substrate. 14, protrudes above the second substrate 14 in a state where the first substrate 12 is not disposed on the second substrate 14, and holds the stopper 46 at the first position. It has a second portion that engages with the first substrate 12 in a state where the first substrate 12 is disposed and holds the stopper 46 in the second position.

[0010]

[Effect of the invention]

 According to the filter suction filtration device 10 having such a configuration and the plug device 44 for the filter suction filtration device, the first substrate 12 is not disposed on the second substrate 14 in the first state. Although the space 82 and the second space 84 do not communicate with each other, when the first substrate 12 is disposed on the second substrate 14, the communication hole 24 is formed between the first space 82 and the second space 84. Communicate through. Therefore, when the liquid is filtered through the first filter container 70, the first space 82 and the second space 84 are completely at the same pressure, so that the second space 84 is the same as the conventional filter suction filtration device. The liquid that has fallen into the second filter container 72 is not unnecessarily filtered, and the liquid in the second filter container does not jump out of the second filter container. Also, in the conventional filter suction filtration device, a dedicated switching valve was required for each of the first space and the second space. However, according to the present invention, one switching valve is sufficient, and the other switching valve is required. No valve is required.

[0011]

[Embodiment of the invention]

 Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows the whole of a filter suction filtration device 10 according to the present invention. In this figure, the filter suction filtration device 10 includes three substrates—an upper substrate (first substrate 12), a middle substrate (second substrate 14), and a lower substrate (third substrate 16). .

The second substrate 14 includes a rectangular bottom plate 18 and side plates 20 extending vertically from the periphery of the bottom plate 18 as shown in detail in FIGS. The bottom plate 18 is provided with a plurality of filter container mounting holes 22 penetrating the upper and lower surfaces of the bottom plate 18 and one communication hole 24.

As shown in FIG. 1, the first substrate 12 includes a top plate 26 and side plates 28 extending downward from the periphery of the top plate 26, and the top plate 26 has an upper surface and a lower surface of the top plate 26. A plurality of filter container mounting holes 30 penetrating therethrough are formed. The size of the top plate 26 is substantially the same as the size of the bottom plate 18 of the second base plate 14. The positional relationship between the filter container mounting hole 30 and the top plate 26 is the same as the positional relationship between the bottom plate 18 and the filter container mounting hole 22 in the second substrate 14, and as shown in FIG. When the first substrate 12 is placed on the filter substrate, the filter container mounting hole 30 of the first substrate 12 is positioned on the filter container mounting hole 22 of the second substrate 14.

The third substrate 16 is fixed to a support (not shown), and as shown in FIG. 1, a bottom plate 32 inclined toward the center, and extends in a substantially horizontal direction from the periphery of the bottom plate 32. And a side plate 34. The bottom plate 32 has substantially the same size and shape as the bottom plate 18 of the second substrate 14. A suction hole 38 is formed in the center of the bottom plate 32. The suction hole 38 can be connected to a suction device (vacuum pump) 42 or the atmosphere via a switching valve 40.

The second substrate 14 is provided with a stopper device 44 for opening and closing the communication hole 24 penetrating the bottom plate 18. The stopper device 44 has a stopper 46 as shown in FIG. The stopper 46 has a cylindrical portion 48 having an outer shape smaller than the inner diameter of the communication hole 24, and a head portion 50 having an enlarged upper end of the cylindrical portion 48. A ring-shaped seal member 52 made of an appropriate material is provided around the upper end of the cylindrical portion 48. The cylinder 48 also has a plurality of holes 54 communicating between the inside and the outside.

On the other hand, a screw 56 is fixed to the upper center of the head 50, and one end of a plate-shaped operating member 58 is engaged with the screw 56. The operating member 58 is bent into a substantially L-shape, and a substantially central bent portion 60 is loosely connected to the bottom plate 18 via a stopper (fulcrum) 62 so that the operation member 58 can swing about the stopper 62 as a fulcrum. The other end of the operating member 58 extends upward, and as shown in FIG. 3, the stopper 46 projects outward from the upper end of the side plate 20 in a state where the communication hole 24 is closed by its own weight. . In the present embodiment, the operating member 58 has a slot 64 extending in the longitudinal direction between one end engaged with the screw 56 and the bent portion 60, and a rod 66 fixed to the bottom plate 18 is provided in the slot 64. Through.

When the filter suction filtration device 10 configured as described above is used, a receiving tray 68 is placed on the bottom plate 32 of the third substrate 16 as shown in FIG. On the other hand, the first filter container 70 and the second filter container 72 are mounted in the filter container mounting holes 30 and 22 formed in the first substrate 12 and the second substrate 14, respectively. These filter containers 70, 72 include an upper large-diameter portion 74, a substantially funnel-shaped reduced diameter portion 76 continuously provided at the bottom of the large-diameter portion 74, and a lower small-diameter portion extending downward from the lower end of the reduced diameter portion 76. A filter 78 having a desired filtration performance, for example, a hydrophilic filter 80 and a hydrophobic filter 81 are arranged at the bottom of the large-diameter portion 74.

The second substrate 14 on which the second filter container 72 is mounted is disposed on the third substrate 16. At this time, it is preferable to interpose a seal member for hermetically sealing between the contact portions between the second substrate 14 and the third substrate 16, specifically, between the side plates 20 and 34. . Next, the first substrate 12 is placed on the second substrate 14. At this time, a seal member for hermetically sealing the contact between the first substrate 12 and the second substrate 14, specifically, between the side plate 28 and the side plate 20, is preferably provided. Preferred. By stacking the three substrates 12, 14, 16 in this manner, a first space 82 is formed between the first substrate 12 and the second substrate 14, and the second substrate 14 and the third A second space 84 is formed between the second space 84 and the substrate 16.

When the first substrate 12 is placed on the second substrate 14, as shown in detail in FIG. 4, the first substrate 12 projects outward from the upper end of the side plate 20 until the first substrate 12 is placed. The end of the operating member 58 comes into contact with the first substrate 12 placed on the second substrate 14 and is pushed down. As a result, the operating member 58 rotates in the direction of the arrow 86 shown in FIG. 4, lifts the stopper 46 engaged with one end of the operating member 58, and connects the first space 82 and the second space 84 with the communication hole. 24.

Next, the first filter container 70 is filled with a liquid. At this time, since the first space 82 is still in the atmospheric pressure state, the liquid is held in the first filter container 70 by the hydrophilic filter 80. After that, when the switching valve 40 is switched to connect the second space 84 to the suction device 42, not only the air in the second space 84 but also the air in the first space 82 is sucked through the communication hole 24 at the same time. The first space 82 and the second space 84 are in the same negative pressure state. As a result, the liquid in the first filter container 70 is sucked through the hydrophilic filter 80, and falls into the second filter container 72 disposed below. At this time, since the first space 82 and the second space 84 are maintained at the same pressure as described above, the filtered liquid remains on the hydrophobic filter 81 of the second filter container 72. .

Next, the switching valve 40 is switched to return the second space 84 and the first space 82 communicating with the second space 84 to the atmospheric state, and the first substrate 12 is removed from the second substrate 14. Thereby, the operating member 58 of the plug device 44 is opened again, the plug 46 is lowered by its own weight, and the operating member 58 connected thereto rotates in the direction of arrow 88 shown in FIG.

Next, after switching the switching valve 40 to connect the second space 84 and the suction device 42, the suction device 42 is activated, and a negative pressure is again introduced into the second space 84. As a result, the liquid contained in the second filter container 72 is filtered by the second hydrophobic filter 81, and falls into the tray 68 placed on the third substrate 16. At this time, as described above, the communication hole 24 is closed by the stopper 46 as shown in FIG. 3, and the negative pressure in the second space 84 is properly maintained.

Finally, the switching valve 40 is switched again to open the second space 84 in communication with the atmosphere. Thereby, the second substrate 14 can be removed from the third substrate 16.

The plug device 44 described above shows only one embodiment, and the present invention is not limited to the embodiment. For example, in the above-described embodiment, the operating member is bent in a substantially L shape, but a substantially straight plate is used, one end of which is fixed to a bottom plate or a side plate of the second substrate, and an intermediate portion thereof is formed. The other end protrudes above the side plate. When the first substrate is not placed on the second substrate, the stopper is lifted to open the communication hole, and the second substrate is opened. When the first substrate is placed, the first substrate may be engaged with the other end of the operating member so that the plug closes the communication hole. In short, the operating member is supported by a fulcrum provided on the second substrate, partially engages with the plug, and engages with the first substrate mounted on another part. Any shape may be used.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a configuration of a filter suction filtration device according to the present invention.

FIG. 2 is a plan view of a second substrate.

FIG. 3 is a cross-sectional view of the stopper device at a position where the communication hole is closed.

FIG. 4 is a cross-sectional view of the plug device at a position where a communication hole is opened.

FIG. 5 is a cross-sectional view showing a configuration of a conventional filter suction filtration device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Filter suction filtration device 12 ... 1st board | substrate 14 ... 2nd board | substrate 16 ... 3rd board | substrate 22 ... 2nd hole 24 ... Communication hole 30 ... 1st hole 44 ... Plug device 46 ... Plug 58 ... Operation Member 70 First filter container 72 Second filter container 82 First space 84 Second space

Claims (4)

[Utility model registration claims] 1. (a) a first substrate 12 having at least one first hole 30, and (b) at least one communication hole 24 and at least one second hole corresponding to the first hole 30. And the second hole 22 is disposed below the first substrate 12 with the second hole 22 positioned below the first hole 30. First space 8
And (c) a second substrate 14 disposed below the second substrate 14 and forming a second substrate 14 between the second substrate 14 and the second substrate 14.
(D) a first filter container 70 attached to each of the first holes 30, and (e) a second filter 22. (F) the first filter container 72 attached to the
A negative pressure is introduced into the space 82 and the second space 84,
A suction device 42 for filtering the liquid held in the filter container 70 and dropping the liquid into the second filter container 72;
(G) occupy a first position in which the communication hole 24 is closed in a state where the first substrate 12 is not disposed on the second substrate 14, and the first position is closed on the second substrate 14. Substrate 12
And a plug device 44 that occupies a second position that opens the communication hole 24 in a state where the filter suction filter is disposed. 2. The plug device 44 includes: a plug 46; a fulcrum 62 provided on the second substrate 14; a first portion supported by the fulcrum 62 and supporting the plug 46; When the first substrate 12 is not disposed on the second substrate 14, the second substrate 14 protrudes above the second substrate 14, and the stopper 46 is held at a first position.
An actuating member 58 having a second portion that engages with the first substrate 12 with the first substrate 12 disposed on the substrate 14 and retains the plug 46 in a second position; The filter suction filtration device (10) according to claim 1, further comprising: 3. A second substrate (14) having a second filter container (72) is disposed below the first substrate (12) having a first filter container (70), and a third substrate is disposed below the second substrate (14). 16, the first substrate 12 and the second substrate 1
4, a second space 84 is formed between the second substrate 14 and the third substrate 16, and a first space 82 is formed between the second substrate 14 and the third substrate 16. A plug device 44 used in the filter suction filtration device 10 for filtering a material in the first filter container 70 and dropping the material into the second filter container 72 while maintaining a constant negative pressure at 84; A first position for closing the communication hole 24, the first position being arranged to face the communication hole 24 formed in the second substrate 14 so as to communicate the first space 82 with the second space 84; A stopper 4 which can be moved between a second position to open 24;
6, the stopper 46 is provided on the second substrate 14, and holds the stopper 46 at the first position in a state where the first substrate 12 is not arranged on the second substrate 14. An operating member 58 for holding the first substrate 12 at the second position with the first substrate 12 disposed on the substrate 14. 4. The operating member 58 is supported by a fulcrum 62 of the second substrate 14, and the plug 46
A first portion that supports the first substrate 12 and projects above the second substrate 14 in a state where the first substrate 12 is not disposed on the second substrate 14 and the plug 46 is moved to the first position. And the plug 4 is engaged with the first substrate 12 in a state where the first substrate 12 is disposed on the second substrate 14.
4. The closure device according to claim 3, further comprising a second portion for holding said second position in said second position.