JP2547240Y2 - Simple liquid purification device - Google Patents

Description

[Detailed description of the invention]

[0001]

TECHNICAL FIELD The present invention relates to a simple liquid for easily obtaining a liquid such as sterile water or a drug solution in the fields of medicine, health and hygiene, biochemistry, microbiology, and in the field of foods and drinks and cosmetics. The present invention relates to a purification device.

[0002]

BACKGROUND ART In the fields of medicine, health and hygiene, biochemistry, and microbiology, various types of equipment such as sterile water, purified water, distilled water, and physiological saline are used for rinsing instruments and diluting drugs. However, it has been a problem that these liquids are often contaminated by microorganisms. For example, with a drug solution used in a medical institution such as a hospital, there is no problem immediately after opening a container purchased from a pharmaceutical manufacturer, but after opening, when used in small quantities over a long period of time, it enters through the container opening. The contained chemical solution is easily contaminated by bacteria and the like, and the chemical solution may be in a dangerous state.

[0003] The applicants of the present application have previously described the application
No. 2-136513 (Japanese Utility Model Laid-Open No. 1-44204), an air pressure feeding means for increasing the internal pressure of a container and a liquid delivery flow path for sending a contained liquid to the outside with respect to a cap body attached to a container opening. And a sterile cap provided with a porous membrane on the channel. If such a sterile cap is used by attaching it to the opening of a predetermined liquid container, the liquid is sent to the outside through the liquid sending channel by operating the air pressure feeding means to increase the internal pressure of the container. The liquid can be passed through the porous membrane so that it can be effectively disinfected,
A sterile liquid can advantageously be obtained.

[0004] In such a sterile cap, the internal pressure in the container is increased by operating the pneumatic feeding means, and the liquid is sent to the outside through the liquid sending channel by this pressure. In addition, the delivery of the liquid is stopped by twisting a pressure release valve provided at a connection portion between the air pressure feeding means and the cap body and releasing the pressure. Therefore, there is a problem that the operability of switching between sending and stopping the liquid is poor, and it is difficult to control the outflow amount of the liquid.

[0005]

Here, the present invention has been made in view of such circumstances, and a problem to be solved is that a liquid delivered from the inside of a container to the outside is discharged by a porous membrane. An object of the present invention is to provide a simple liquid purifying apparatus for removing bacteria, which enhances the operability of switching between sending and stopping the liquid and facilitating the control of the outflow of the liquid.

[0006]

According to the present invention, in order to solve the above-mentioned problems, (a) a container body and (b) a first valve for supplying a compressed gas into a space of the container body. Body and
(C) a liquid delivery channel for delivering the liquid to the outside by the pressure in the space increased based on the supply of the compressed gas, and (d) a second valve for controlling the communication and blocking of the liquid delivery channel. Opening and closing the second valve element in a simple liquid purification apparatus including a body and (e) a porous membrane means for sterilizing a liquid sent to the outside through the liquid delivery channel. An operation lever having a lever structure was installed at the fulcrum on the container main body, and the operation point was connected to the second valve body in order to control the communication / blocking of the liquid delivery flow path. In this state, the operation lever is further provided, and the operating lever is urged by an urging means, so that the second valve body communicating with the operation point is closed, and the liquid delivery flow path is held in a closed state. While operating against the urging force of the urging means. By operating a lever, the second valve body is opened, and the liquid delivery flow path is switched to a communicating state. is there.

Further, in the present invention, advantageously, in such a simple liquid purifying apparatus, the second valve body is switched from the closed state to the open state and opened in response to the urging force of the urging means. Further, a switching holding means for holding the state is further provided, and apart from the switching operation by the operation lever, by operating the switching holding means, the liquid delivery flow path is switched from the cutoff state to the communication state, and the communication state is established. It is done so that it can be maintained.

[0008]

[Operation / Effect] That is, in the simple liquid purifying apparatus having such a configuration, by operating the operation lever, the second valve body is opened / closed to switch the communication state / blocking state of the liquid delivery flow path. I can do it. And since the operation lever has a lever structure,
The second valve element can be opened very easily simply by pushing down the point of force with a light force, and when the hand is released from the operating lever, the operating lever is automatically activated by the urging force of the urging means. It is pushed up and the second valve element is closed. Therefore, the operation of switching between the supply of the stored liquid and the stop thereof can be performed extremely easily and quickly, and therefore, the control of the outflow amount of the liquid becomes very easy.

When a switching holding means is provided in addition to the operating lever, the second valve element can be switched from the closed state to the open state by operating the switching holding means. Since the liquid can be held, the liquid can be continuously delivered without pressing the operation lever. Therefore, the switching operation becomes more convenient by properly using the operation lever and the switching holding means according to the amount of liquid to be taken out.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, in order to clarify the present invention more specifically, representative embodiments of the present invention will be described in detail with reference to the drawings.

First, FIG. 1 schematically shows an example of a simple liquid purifying apparatus having a structure according to the present invention. Here, 10 is a container body having a substantially bottomed cylindrical shape,
The cap 12 is screwed into the opening located at the upper end, so that a space for containing a predetermined liquid is formed inside. The molding material of the container body 10 is not particularly limited, and among known container materials, materials that affect the liquid contained therein or materials that are not affected by the liquid are used. It is appropriately selected, for example, various resins, glass, ceramic materials and the like are suitably used. In addition, when using various polymer materials having elasticity such as polypropylene, polyethylene, polycarbonate, polyvinyl chloride, ABS resin, and AS resin, the container body 10 can be pressed (pressed) with fingers or the like, When the container is released from the clamping pressure, it can be easily restored to its original shape. By doing so, the clamping pressure of the container main body 10 increases the internal pressure of the container body 10 so that the contained liquid can be sent to the outside. May be.

As shown in FIGS. 2 and 3, the cap 12 has a substantially cylindrical shape with a bottom, and at the bottom thereof, a first air inlet for compressed air is provided at a position separated by a predetermined distance. And a second through hole 16 for liquid delivery. Among them, the first through hole 14
Is formed in a stepped shape, and as shown in FIG.
Four grooves 18 are formed along the step. In the middle of the first through-hole 14, a first valve body 20 made of a disc-shaped rubber is arranged, and its peripheral portion is supported by the step portion, while its central portion expands downward. It can be deformed out. Further, a pressing member 22 having a substantially frustoconical shape is fitted from above, and the opening of the first through hole 14 is closed, so that the communication formed in the axial center portion of the pressing member 22 is formed. The inside and outside of the cap 12 are communicated only through the hole 24.

The communication hole 24 is normally closed because its lower opening is in close contact with the first valve body 20, and compressed gas flows from the outer surface of the cap 12. Only when the first valve body 20 is swelled and deformed downward by flowing in, the first valve body 20 communicates. Then, at this time, the compressed gas is supplied into the container body 10 through the groove 18 of the first through hole 14 (see FIGS. 5 and 6). In other words, the first valve body 20 is configured as a check valve that allows the flow of the compressed gas into the space of the container body 10 while preventing the flow of the compressed gas and the liquid from the space. is there.

The cap 12 has a small hole 26 penetrating in the thickness direction in the vicinity of the first through-hole 14. An annular rubber packing 28 and an annular metal fitting 30 as a presser are assembled from the outer surface of
The safety valve is formed by fixing the inner peripheral edge of O to the cap 12 with a spring 112 described later.
That is, the small hole 26 is always closed by the rubber packing 28, but when the internal pressure of the container body 10 becomes a certain pressure or more, the rubber packing 28 can be pushed up and depressurized. It is like that. Therefore,
Even when the internal pressure suddenly rises due to a temperature rise or the like, the pressure is automatically released, so that the rupture of the container body 10 can be effectively avoided. However, such a safety device is not essential in the present invention.

The supply of the compressed gas into the container body 10 through the first through hole 14 can be performed by various known techniques.
The compressed air is supplied by operating the air pump means 32 which is removably attached to the apparatus 2. The structure of the air pump means 32 is shown in FIGS. 5 and 6, and generally comprises a piston 36 and a cylinder 40. The piston 36 has an outer wall 33 having a substantially cylindrical shape with a bottom, and a communication pipe 34 penetrating through the center of the bottom of the outer wall and integrally provided with the lower end of the communication pipe 34. The pressing member 2 is formed by a tapered surface formed on the peripheral surface.
While it is designed to be attached to the tapered surface of No. 2,
An annular spring receiver 42 is fixed between the upper end of the outer wall 33 and the upper end of the communication pipe 34. The cylinder 40 has a substantially cylindrical shape with a bottom, and an air hole 48 is provided through the bottom of the cylinder. Further, an annular seal 50 is provided for the air hole 48 from the inner surface side of the cylinder 40.
Are arranged, and are fixed in a state where the outer peripheral edge portion is pressed by the annular seal pressing plate 44.

The piston 36 and the cylinder 4
Numerals 0 are slidably assembled in the axial direction with a spring 46 disposed between the spring receiver 42 and the seal holding plate 44 to form an air chamber 38 therebetween. Accordingly, by pressing the cylinder 40 against the piston 36 against the urging force of the spring 46, the air in the air chamber 38 is compressed, and the compressed air is compressed by the communication pipe portion 34 of the piston 36 and the pressing member 22. Through the communication hole 24, and is fed into the container body 10 from the first through hole 14 (see FIG. 5). When the cylinder 40 is returned by the restoring force of the spring 46, the cylinder 4
The seal 50 closing the zero air hole 48 is bent, and the air hole 48 is opened to supply air into the air chamber 38 (see FIG. 6).

Further, as shown in FIG. 1, an inverted L-shaped guide groove 52 is formed on the outer peripheral surface of the outer wall portion 33 of the piston 36. A pin 54 is fixed to the cylinder 40 so as to penetrate its peripheral wall. When the compressed air is fed, the pin 54 is moved in the vertical groove portion of the guide groove 52 so that the upper and lower ends of the movement are performed. On the other hand, when the air pump means 32 is not used, the pin 54
The guide groove 52 is locked in a lateral groove portion so as to be held in a compact housing form as shown in FIG. Further, here, the air pump means 32
Since it is merely attached to the holding member 22 on the cap 12 by taper fitting, it can be removed if it hinders operation.

On the other hand, on the second through hole 16 side, as shown in FIG. 2, a cylindrical protruding portion 56 is formed so as to surround the through hole 16 on the outer surface side of the cap 12. Are provided integrally. And the top valve body 58 of the top shape is accommodated in the inner hole, and further from above,
A valve shaft 60 having a substantially cylindrical shape is housed with the upper connecting portion 62 protruding from the protruding portion 56. A nozzle pipe 66, a connection nozzle 68, and a porous membrane means 70 described later are sequentially connected to the connection part 62 of the valve shaft 60, and a tip end of the porous membrane means 70 is 72. Also, on the inner surface side of the cap 12, the second through hole 1
6, a pipe 76 having a length reaching the bottom of the container body 10 via a connection pipe 74 is attached. Thus, a liquid delivery flow path for delivering a predetermined liquid contained in the container body 10 to the outside is formed. Even if the liquid is contaminated by bacteria or the like in the container body 10, the At the time of sending, the liquid is effectively removed by passing through the porous membrane means 70 arranged on the flow path, so that a sterile liquid can be advantageously obtained over a long period of time. .

Since the vicinity of the open end (liquid outlet 72) of the liquid delivery flow path on the outside of the container is a portion easily contaminated with bacteria, it is desirable to attach an opening / closing lid 78 as shown in FIG. ,Not required. Further, in order to effectively prevent bacterial contamination of the liquid delivery channel, the opening / closing lid 78, the liquid outlet 72 and the like are provided with an antibacterial plastic such as disclosed in Japanese Patent Application No. 3-87511. It is preferable to use a plastic containing an antibacterial zeolite.

Further, as shown in FIG. 7, the porous membrane means 70 comprises a main body 82 and a lid 84 having the liquid outlet 72.
A hollow fiber module 86 serving as a porous membrane is recessed and fixed in a housing 80 having a substantially cylindrical shape. Specifically, the hollow fiber module 86 bundles a plurality of porous hollow fibers by bending them in a loop shape (U-shape), and bonding the open end thereof with a suitable adhesive such as polyurethane resin. The adhesive fixing portion is recessed and fixed in the housing 80. However, the hollow fiber module 86 may be configured to be detachable from the housing 80.

Then, this porous hollow fiber is
0 has a pore size of a pore size that allows passage of the liquid accommodated in it but does not allow bacteria to pass through, in other words, a membrane pore size capable of removing bacteria.
Those that block 0.3 μm standard particles are suitable. However, when it is necessary to remove not only bacteria but also viruses, it is appropriate to use a hollow fiber having a smaller membrane pore diameter.

Further, such a porous hollow fiber can be produced by a known method using a polymer material such as polyolefin, polyvinyl alcohol, polysulfone, polyacrylonitrile, cellulose acetate, polymethyl methacrylate, and polyamide; Any of those known various materials can be used favorably. When the liquid stored in the container body 10 is an aqueous liquid, a hydrophilic hollow fiber is used as the porous hollow fiber,
When a hydrophobic hollow fiber is used, a known hydrophilic treatment is performed. When the liquid is an oily liquid, it is preferable to use a hydrophobic hollow fiber as a hydrophobic one.

Further, as the porous membrane used in the porous membrane means 70, a flat membrane-shaped one or the like may be appropriately used in addition to the hollow fibers, or a ceramic filter using an inorganic material may be used. It is also possible. Also,
The mounting position of the porous membrane means 70 may be on the liquid delivery flow path, regardless of inside or outside of the container main body 10 and further before or after the second valve body 58. In this embodiment, since the porous membrane means 70 and the connection nozzle 68 are fitted by a luer lock method, the porous membrane means 70
Can be easily exchanged.

In such a liquid delivery flow path, the valve shaft 60 has a contracted position where an outer flange 64 provided at the center thereof is engaged with an upper end of the protruding portion 56 of the cap 12. It is possible to move up and down between the position and the extended position moved upward by a predetermined amount. In the contracted position, the second valve body 58 is connected to the second through hole 16 at the lower end portion accommodated in the inner hole of the projection 56.
Presses against the opening to close the through-hole 16, while in the extended position, the second valve body 58 is allowed to move upward by receiving the internal pressure in the container body 10, The hole 16 is opened. At that time, the liquid that passed through the second through hole 16 was cut in the axial direction on the peripheral surface of the second valve body 58 and in the radial direction on the lower end surface of the valve shaft 60. It will be sent out through the liquid channel.

Thus, the upstream side including the projecting portion 56 of the cap 12 is the first flow path portion, and the downstream side including the valve shaft 60 is the second flow path portion. By switching between the contracted position and the extended position, the second valve body 58 is opened and closed, and the liquid delivery flow path is switched between a communicating state and a blocking state. The valve shaft 60 includes a cap 12
O-ring 8 is provided at a portion accommodated in the inner hole of
8 are fitted so that the first channel portion and the second channel portion are connected in a liquid-tight and air-tight manner.

The switching operation of the liquid delivery flow path,
In other words, the opening and closing operation of the second valve body 58 is performed by the cap 1
The operation can be performed by operating the operation lever 90 attached to the control lever 2.

That is, the operating lever 90 has a substantially rectangular plate shape, and one end in the longitudinal direction is an operating portion 92 pressed by a finger, while the other end in the longitudinal direction is cut into a rectangle. A pair of arms 94, 94 are formed to be chipped. The arm portions 94, 94 are provided with action projections 96, 96 projecting inward at the distal ends, and support projections 98, 98 projecting outward at the center.
On the other hand, on the outer surface side of the cap 12, a pair of first and second through holes 14, 16 is located between the first and second through holes 14 and 16, so that a pair of Support portions 100, 100 are provided. Then, the support levers 98, 98 of the operation lever 90 are engaged with the engagement holes of the support portions 100, 100, whereby the operation lever 90 is integrally assembled to the cap 12. At the same time, the support projections 98, 98 are used as fulcrums to function as levers. In the operation lever 90, a circular notch 102 is formed in a portion of the cap 12 located on the first through hole 14, and the above-described air pump means 32 is It can be connected to the holding member 22.

The operating projection 9 of the operating lever 90
6 and 96 are engaged with a valve switch 104 having a substantially cylindrical shape, which is fitted on the valve shaft 60. Specifically, an operation piece 106 protruding outward is provided at a lower portion of the outer peripheral surface of the valve switch 104, and an engagement groove 108 extending in the circumferential direction is formed except for a portion where the operation piece 106 is installed. The operating projections 96, 96 of the operation lever 90 are inserted into the engagement groove 108 and engaged (see FIG. 9). An inner flange portion 110 is provided at the upper end of the valve switch 104, and the outer flange portion 64 of the valve shaft 60 is pressed by the inner flange portion 110 to move the valve shaft 60 upward. Is regulated.

Further, the operation lever 90 is provided between the back side of the notch 102 of the operation lever 90 and the cap 12.
The operating portion 92 is urged upward and the operation convex portion 96 is urged downward by a spring 112 disposed between the pressing member 22 and the upper pressing member 22, whereby the valve switch 104 and the valve shaft 60 are moved upward. Is regulated, the second valve body 58 is normally closed, and the liquid delivery flow path is kept in a closed state. When the operating portion 92 of the operating lever 90 having a lever structure is pressed down against the urging force of the spring 112, as shown in FIG. Since the upward movement of the valve shaft 60 is allowed, the valve shaft 60 and the second valve body 58 are moved upward by receiving the internal pressure in the container body 10, and the liquid delivery flow path is changed. They are being communicated. When the operating lever 90 is released, the spring 112 automatically returns to the cutoff state, so that the communication state and the cutoff state can be switched very easily.

Thus, the communication of such a liquid delivery flow path
The shutoff operation can be performed by rotating the valve switch 104 separately from the operation by the operation lever 90.

That is, as shown in FIG. 9, a lower end portion of the valve switch 104 and a base portion of the projecting portion 56 of the cap 12 have a moving slope and a fixing flat portion, respectively. Cams 114 are provided at positions engaging with each other. Therefore, if the operation piece 106 of the valve switch 104 is moved and the valve switch 104 is rotated, the valve switch 10
4 is pushed upward against the urging force of the spring 112. In this operation, until the valve switch 104 is turned again in the reverse direction to return to the original position, the liquid delivery flow path is maintained in the communicating state, and the internal pressure in the container body 10 causes
The liquid will be delivered continuously. Thus, in the apparatus of the present embodiment, a switching holding means for switching the liquid delivery flow path from the shut-off state to the communicating state and maintaining the communicating state by the valve switch 104 is configured.

Therefore, in the simple liquid purifying apparatus having such a structure, by selectively operating either the operation lever 90 or the valve switch 104, the communication state and the cutoff state of the liquid delivery flow path are switched at any time. The stored liquid can be sent out, the operation is simple and convenient, and the outflow of the liquid can be easily controlled.

Although the typical embodiments of the present invention have been described in detail above, it is needless to say that the present invention is not limited by the description of such embodiments. Further, in addition to the above-described embodiments, various changes, modifications, improvements, and the like can be made to the present invention based on the knowledge of those skilled in the art without departing from the spirit of the present invention. It should be understood.

For example, the operating lever 90 and the second valve body 58
The communication method is not limited to the structure of the embodiment, and the switching and holding means is not limited to that of the embodiment, and employs various mechanisms other than the cam mechanism. Thus, the switching operation and the holding operation can be performed.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of a simple liquid purifying device having a structure according to the present invention.

FIG. 2 is an explanatory sectional view showing an enlarged structure of a cap portion in FIG. 1;

FIG. 3 is a plan view showing a cap portion corresponding to FIG. 2;

FIG. 4 is an explanatory plan view showing a first through hole formed in a cap.

FIG. 5 is a cross-sectional view showing the air pump means assembled to the cap, showing a state in which compressed air is pumped into the container body.

FIG. 6 is a cross-sectional view showing the air pump means assembled to the cap, and shows a state in which the cylinder is returned by a restoring force of a spring.

FIG. 7 is a sectional view showing a porous membrane means attached to a liquid delivery channel.

FIG. 8 is a partially cutaway sectional view showing, in an enlarged manner, a structure of a cap portion in FIG. 1, showing a state where an operation lever is pushed down.

FIG. 9 is a front view showing the structure of the cap portion of FIG. 1, omitting an operation lever and a support portion of the cap for the sake of showing a cam mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Container main body 12 Cap 20 First valve body 32 Air pump means 56 Projecting part 58 Second valve body 60 Valve shaft 66 Nozzle pipe 68 Connection nozzle 70 Porous membrane means 72 Liquid outlet 74 Connection pipe 76 Pipe 86 Hollow fiber Module 90 Operation lever 92 Operation section 96 Working projection 98 Support projection 100 Support section 104 Valve switch 112 Spring 114 Cam

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 61-135593 (JP, U) JP-A 62-136294 (JP, U) JP-A 60-49985 (JP, U)

Claims (4)

(57) [Scope of request for utility model registration] 1. A (a) container body in which a space for containing a predetermined liquid is formed, and (b) a compressed gas provided for supplying a compressed gas into the space of the container body. A first valve body that permits inflow but prevents outflow of compressed gas and liquid from inside the space; and (c) an opening end inside the space of the container body that is provided to penetrate the inside and outside of the container body. Is inserted into the liquid, by the pressure in the space increased based on the supply of the compressed gas,
A liquid delivery channel for delivering such liquid to the outside,
(D) a second valve element disposed on the liquid delivery channel to control the communication and blocking of the liquid delivery channel; and (e) a second valve body disposed on the liquid delivery channel and passing through the liquid delivery channel. A simple liquid purifying apparatus comprising: a porous membrane means for sterilizing a liquid to be sent to the outside; and opening / closing the second valve to control communication / cutoff of the liquid sending flow path. To this end, an operation lever having a lever structure is further provided in a state where its fulcrum is installed on the container main body, while its operation point is connected to the second valve body, and the operation lever is provided. Biased by biasing means,
The second valve body communicating with the point of action is closed;
The second valve body is opened by operating the operation lever against the urging force of the urging means while the liquid delivery flow path is maintained in the cutoff state, and the liquid is opened. A simple liquid purifying device, characterized in that a delivery channel can be switched to a communicating state. 2. The liquid delivery channel includes a first channel portion on the upstream side and a second channel portion on the downstream side in the liquid delivery direction. In the state arranged between them, they are fitted to each other slidably in the axial direction so as to be switched between the contracted position and the extended position in a liquid-tight and air-tight manner, and are integrally connected to each other. One of the flow path portion and the second flow path portion is fixed to the container main body, and the other is engaged with an action point of the operation lever, and the operation lever is attached to the operation body. By being urged by the urging means, such a liquid delivery channel is held at the contracted position,
In the flow path, the second valve element is closed and the flow path is shut off, and the liquid delivery flow path is switched to the extended position by operating the operation lever against the urging force. 2. The simple liquid purifying apparatus according to claim 1, wherein the second valve element is opened in the flow path, and the flow path is communicated. 3. A cam provided with a first flow path part and a second flow path part of the liquid delivery flow path provided on the first flow path part side and / or the second flow path part side. A switch holding unit that is connected via a mechanism and includes the cam mechanism, and switches the liquid delivery flow path from the contracted position to the extended position and holds the liquid delivery channel in the extended position. Separately, by operating the switching holding means, by the action of the cam mechanism, the liquid delivery flow path is switched from the contracted position to the extended position against the urging force of the urging means, and moved to the extended position. Let me keep
3. The simple liquid purifying apparatus according to claim 2, wherein the liquid delivery flow path is switched from the cutoff state to the communication state, and is maintained in the communication state. 4. A switch holding means for switching the second valve body from a closed state to an open state and holding the open state against the urging force of the urging means, further comprising: 2. The liquid supply flow path is switched from a cut-off state to a communicating state by operating the switching holding means separately from the operation, and is maintained in the communicating state. Or the simple liquid purifying apparatus according to 2.