JPH08972Y2 - Simple liquid purification device - Google Patents

Description

[Detailed description of the device]

[0001]

TECHNICAL FIELD The present invention relates to a device for easily obtaining aseptic water or a drug solution in the fields of medical care, health and hygiene, biochemistry, bacteriology, fields related to food and drink, cosmetics, etc. Is.

[0002]

BACKGROUND ART Conventionally, in liquids such as water and drug solutions used in the fields of medical care, hygiene, biochemistry and bacteriology, for example, drug solutions used in medical institutions such as hospitals and contact lens solutions. In many cases, the product is purchased in a state of being housed in a large container, and is subdivided and dispensed for a relatively long period of time.
Therefore, in such a liquid, there is a problem of contamination by bacteria that enter from the opening of the container or the like.

Therefore, the applicant of the present application has previously filed Japanese Patent Application No. 1-
No. 83003 (JP-A-2-21928), when the liquid contained in the container body is caused to flow to the outside through a liquid delivery channel that penetrates the container body in and out, A simple liquid purification device was proposed in which a sterile liquid can be easily taken out by passing through the porous membrane provided in the above to sterilize it. And, there, a pressure accumulating type container is adopted in the container body, and when the liquid is taken out, a compressed gas or a liquefied gas is supplied into the container to increase the pressure in the sealed space. Based on this, the liquid was sent out to the outside through the liquid sending channel.

However, in such a pressure accumulating type liquid purifying apparatus, since the container body is required to have pressure resistance and airtightness, there is a problem that the material and size of the container are limited from the viewpoint of strength, and the container has a problem. It was necessary to have a complicated sealing mechanism. Further, when accumulating pressure by a manual air pump, the pressure accumulating operation is troublesome, and it is not easy to increase the pressure in the closed space, especially when the liquid volume decreases and the space in the container increases. The problem was that it was difficult to handle. Furthermore, since the amount of outflow of the liquid changes depending on the magnitude of the pressure in the sealed space, it is not possible to take out the liquid at a constant flow rate, and it is difficult to take out only the required amount of liquid. Met.

[0005]

The present invention has been made in view of such circumstances, and its problem is that the structure is simple, the operation is easy, and a necessary amount of sterile liquid is stored. It is to provide a liquid supply device that can be taken out.

[0006]

In order to solve the above-mentioned problems, in the present invention, a container main body for containing a predetermined liquid, a liquid delivery channel provided inside and outside the container main body, and the liquid Pump means provided on the delivery flow passage and for delivering a fixed amount of the liquid in the container main body to the outside by the pushing operation, and sterilization of the liquid provided on the liquid delivery passage upstream of the pump means. A simple liquid purification device including a porous membrane
The pump means at a predetermined length of the liquid delivery channel.
The outer cylinder, which constitutes the salient part, and whose inside is the pump chamber,
It is inserted into the outer cylinder and is axially liquid-tight with respect to the outer cylinder.
The inside of the cylinder that can be reciprocally moved in the direction is the liquid delivery channel
The inner cylinder and the insertion tip of the inner cylinder are
The liquid delivery flow path in the inner cylinder due to the pushing movement in the entering direction
First valve means for allowing liquid to flow into the outer cylinder
Of the porous membrane side of the
Liquids are allowed to flow in, but liquids to the porous membrane side
The gist of the present invention is a simple liquid purification device characterized in that it comprises a second valve means for preventing outflow .

Further, in the present invention, it is advantageous that the pump means has the inner side with respect to the outer tube.
A mechanism is provided in which the pushing movement amount of the cylinder is regulated to be switchable in a plurality of stages and the discharge amount thereof is variable.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to clarify the present invention more specifically, a typical example of a simple liquid purification device according to the present invention will be described below in detail with reference to the drawings.

First, FIG. 1 shows an outline of a simple liquid purification apparatus 10 according to the present invention. There 1
Reference numeral 2 denotes a container main body, which has a substantially bottomed cylindrical shape, and a cap 16 is screwed into an opening 14 provided at an upper end of the container main body so as to form a liquid storage space 18 sealed inside. It has become. 20 is a packing. The molding material of the container body 12 is not particularly limited, and may be any of known container materials such as various resins, glass, and ceramic materials, which may affect the liquid contained in the liquid containing space 18. or giving, nor or influenced by the liquid material is to be selected appropriately.

The cap 16 has a bottomed cylindrical shape as a whole, and the bottom of the cap 16 is provided at the center of the circular recess 21 provided so as to be recessed from the outside to the inside.
The through hole 22 is provided (see FIG. 2), and the nozzle portion 24, the inner cylinder 26, the outer cylinder 28, the connection pipe 30, and the porous membrane 32 are sequentially connected in the through hole 22 to form a structure. The integrated liquid delivery member is inserted. As a result, a liquid delivery channel is provided, and the liquid sterilized by the porous membrane 32 and sucked up is
From the outlet 34 of the nozzle portion 24, it can be discharged in a sterile state. In addition, here, the liquid delivery member is configured integrally with the cap 16 because the flange portion provided at the upper end portion of the outer cylinder 28 is adhesively fixed to the inner surface of the bottom portion of the cap 16. There is.

In this embodiment, a hollow fiber module is used as the porous membrane 32. Specifically, this is a loop-shaped (U-shaped) configuration of a plurality of porous hollow fibers.
It is formed by curving and bundling it into a bundle, and the end portion on the opening side is adhered and fixed by an appropriate adhesive such as polyurethane resin. Further, here, the adhesive fixing portion is indented into the housing cylinder 33 to form a structure. ing. This hollow fiber has a hole having a pore size that allows the liquid contained in the container body 12 to pass through but does not allow bacteria to pass therethrough. In other words, it has a membrane pore size at which bacteria can be removed. Is 0.2 to 0.3
A substance that can block the standard particles of μm is suitable. However, when it is necessary to remove not only bacteria but also viruses, it is appropriate to use hollow fibers having a smaller membrane pore size.

The porous hollow fiber can be produced by a known method using a polymer material such as polyolefin, polyvinyl alcohol, polysulfone, polyacrylonitrile, cellulose acetate, polymethylmethacrylate or polyamide. All of these known various types are well used. When the liquid contained in the container body 12 is an aqueous liquid, a hydrophilic porous hollow fiber is used. When a hydrophobic hollow fiber is used, a known hydrophilic treatment is used. Processing will be performed. When the liquid is an oily liquid, it is desirable to use a hydrophobic hollow fiber as the porous hollow fiber.

In addition to the hollow fibers, a flat membrane or the like may be appropriately employed as the porous membrane 32, or a ceramic filter using an inorganic material may be employed.

By the way, as shown in FIG.
The outer cylinder 28 and the inner cylinder 26 are arranged so that the inner cylinder 26 can reciprocate in an axially liquid-tight manner with respect to the outer cylinder 28.
It is connected. Then, by pushing the inner cylinder 26 into the outer cylinder 28, the liquid is transferred to the inner cylinder 2.
The pump means 36 is formed between the pump 6 and the pump 6 so that it can be delivered to the nozzle 24 side.

That is, the lower end portion of the inner cylinder 26 is a closed spring receiving portion 38, and the inner surface of the lower end portion of the outer cylinder 28 is provided with a spring receiving step portion 41, and the spring receiving portion 38 and the spring receiving step portion are provided. By disposing the spring 42 between the inner cylinder 26 and the outer cylinder 2,
8 is connected. A small diameter portion 44 is provided near the closed lower end portion of the inner cylinder 26, and a through hole 46 is formed in the small diameter portion so as to be orthogonal to the axial direction. By communicating with the inner hole of the cylinder 26, the inner hole of the inner cylinder 26 and the inner hole of the outer cylinder 28 communicate with each other. A rubber valve (first valve means) 48 having a thin inner diameter side and a thicker outer diameter side and having a substantially ring shape is fitted into the small-diameter portion 44. 28 is sealed, and the through hole 46 is closed by the inner peripheral surface of the rubber valve 48. on the other hand,
A conical valve seat is provided below the spring receiving step portion 41 on the inner surface of the outer cylinder 28, and a ball valve is provided there.
(Second valve means) By disposing 40, the lower opening of the inner hole of the outer cylinder 28 is closed.

That is, in the outer cylinder 28, the ball valve 4
0 and the rubber valve 48 to divide the liquid chamber (pump
Chamber 50 is formed, and in the liquid chamber 50, the porous film 32 is formed by the action of the ball valve 40.
The liquid is allowed to flow in from the side, but the liquid is prevented from flowing out to the porous membrane 32 side. Further, due to the action of the rubber valve 48, when the inner cylinder 26 is pushed into the outer cylinder 28, the through hole 46 of the inner cylinder 26 is opened,
The liquid in the liquid chamber 50 is made to flow from the outer cylinder 28 to the inner cylinder 26.

More specifically, the inner cylinder 26 is replaced with the outer cylinder 28.
When the pressure in the liquid chamber 50 is increased by being pushed in,
The rubber valve 48 is deformed to the state shown in FIGS. 3 to 4, and the through hole 46 is opened on the inner peripheral side while maintaining the sealing action on the outer peripheral side. Thereby, the liquid chamber 50 and the inner hole of the inner cylinder 26 are communicated with each other, and the liquid can be made to flow out to the nozzle portion 24 side. At that time, since the ball valve 40 is pressed downward, the liquid does not return. Then, the inner cylinder 26
When the pushing force is released, the inner cylinder 26 is pushed up again by the restoring force of the spring 42. At that time, a negative pressure is generated in the liquid chamber 50, a suction force is generated, and the ball valve 40 opens. Then, the sterilized liquid flows in from the side of the porous membrane 32. However, since the inflow resistance is considerably increased by the porous membrane 32, it is preferable that the spring 42 be sufficiently strong or the permeation area of the porous membrane 32 be sufficiently wide. The liquid flowing into the liquid chamber 50 is prevented from being contaminated because the rubber valve 48 blocks the contact with the outside air as shown in FIG.

Further, in the apparatus of this embodiment, air is formed in the gap between the through hole 22 of the cap 16 and the outer peripheral surface of the inner cylinder 26 and the air hole 5 formed near the upper end of the outer cylinder 28.
2 is introduced into the container body 12 through 2, but the air inflow 52 is provided with an air filter 54 made of a porous film so that the inflowing air is effectively sterilized, The inside of the main body 12 can be well prevented from being contaminated. The air holes 52 and the air filter 54 are provided in the container body 1
Although it may be provided in No. 2, it is more advantageous in manufacturing to provide it in the pump section.

In the simple liquid purifying apparatus 10 equipped with such pump means 36, the liquid can be immediately discharged to the outside of the container body 12 by operating the pump means 36. Accumulation operation is unnecessary. Further, the outflow amount of the liquid from the nozzle portion 24 is proportional to the operation amount of the pump means 36, that is, the pushing amount of the inner cylinder 26 in this case. Therefore, it is necessary to adjust the pushing amount so that it is necessary. It is possible to easily obtain aseptic liquid in an amount only. Further, in such a simple liquid purifying apparatus 10, since the container body 12 is not required to have pressure resistance and airtightness, the structure can be simplified and the restriction on the material can be significantly eased.

By the way, in the apparatus of the above embodiment, the inner cylinder 2
The pushing amount of 6 is regulated at the position where the spring 42 can be contracted most so that a certain amount of liquid can be discharged by one pump operation. Thus, it is also possible to change the pump operation amount in a plurality of stages and regulate it to make the liquid discharge amount variable. For example, FIGS. 5 and 6 show specific examples of such a switching mechanism. ing.

That is, there, a pair of locking pins 5 projecting in the direction orthogonal to the axial direction are formed on the side wall of the inner cylinder 26.
6 are provided, on the side wall portion of the outer cylinder 28, a total of 3 pairs of notched grooves 58 having different lengths are provided so as to extend in the axial direction, and a moving groove 60 is provided between each notched groove 58. It is provided. Therefore, the locking pin 56 is attached to the cutout groove 5 thereof.
The amount of pump operation can be regulated according to the length of the groove by engaging with any one of No. 8, and the discharge amount according to the amount of operation can be obtained. Then, by rotating the inner cylinder 26 and the outer cylinder 28 relative to each other and moving the locking pin 56 to the other notch groove 58 using the moving groove 60, the pump operation amount is changed, and the different discharge amount. Will be changed to. In such a case, since the air can flow into the container through the notch groove 58, it is not necessary to provide the air hole 52 as in the above-described embodiment.

Reference numeral 62 is a mark indicating the position of the locking pin 56. By adjusting the position of the mark 62 to a mark provided on the upper surface of the cap 16 or the like for displaying the discharge amount, any discharge amount can be obtained. It is possible to identify if they are matched. Those marks are composed of letters, numbers and other symbols.

Further, the switching mechanism shown in FIG. 7 is provided with a tubular guide member 66 on the outer side of the inner cylinder 26, and like the above-described switching mechanism, the switching mechanism provided on the inner cylinder 26. The stop pin 56 is provided with the cutout groove 6 of the guide member 66.
8, the pump operation amount can be regulated, and the guide member 66 and the inner cylinder 26 are rotated relative to each other so that the notch grooves 68 having different lengths are provided.
The amount of the delivered liquid can be changed by moving the locking pin 56 to. In the case of such a switching mechanism, as in the embodiment of FIG. 2, an air hole is provided in the pump part, the container body, etc. in order to let air flow into the container, and an air filter is further attached to this air hole. Good. As described above, by providing the switching mechanism for changing the discharge amount of the liquid, it becomes easy to take out only the really required amount of liquid, which is advantageous especially when it is desired to take out the precious and expensive liquid in the necessary minimum amount. That is the structure.

Although the typical construction of the simple liquid purifying apparatus according to the present invention has been described above in detail, it goes without saying that the present invention is not restricted by the description of the above embodiment. By the way. Further, in addition to the above-described embodiments, the present invention may be variously modified, modified, improved, etc. based on the knowledge of those skilled in the art without departing from the spirit of the present invention. Should be understood.

[0025]

As is apparent from the above description, in the simple liquid purifying apparatus according to the present invention, by operating the pump means arranged on the liquid delivery flow path, it is possible to perform necessary operations with simple operation. Since a certain amount of liquid can be taken out, the handleability is extremely good. And, unlike a pressure-accumulation type container, since pressure resistance and airtightness are not required for the container, the device configuration can be advantageously simplified, and
The restrictions on the material and size of the device can be greatly eased.

Further, in the simple liquid purifying apparatus according to the present invention, when the pump means is provided with a mechanism for varying the discharge amount thereof, it becomes easy to take out a liquid of a really necessary amount, which is especially valuable and expensive. This is an advantageous configuration, for example, when it is desired to take out only a necessary minimum amount of liquid.

[Brief description of drawings]

FIG. 1 is an explanatory view schematically showing an example of a simple liquid purification device according to the present invention.

FIG. 2 is an enlarged explanatory view showing an enlarged pump portion of the apparatus shown in FIG.

FIG. 3 is an enlarged view showing a part of the pump means, showing a state in which the liquid delivery passage is blocked by the rubber valve.

FIG. 4 is an enlarged view showing a part of the pump means, showing a state in which the rubber valve is deformed and the liquid delivery passage is communicated.

FIG. 5 is a cross-sectional explanatory view showing an example of a discharge amount varying mechanism of pump means.

FIG. 6 is a perspective view showing a configuration of a cutout groove of FIG.

FIG. 7 is a perspective view showing another example of the discharge amount varying mechanism of the pump means.

[Explanation of symbols]

10 Simple Liquid Purification Device 12 Container Body 16 Cap 24 Nozzle Part 26 Inner Cylinder 28 Outer Cylinder 30 Connection Pipe 32 Porous Membrane 34 Outlet 36 Pump Means 40 Ball Valve 42 Spring 48 Rubber Valve 50 Liquid Chamber 52 Air Hole 54 Air Filter 56 Locking pin 58 Notch groove 60 Moving groove 62 Mark 66 Guide member 68 Notch groove

Claims (2)

[Scope of utility model registration request] 1. A container main body for containing a predetermined liquid, a liquid delivery channel provided inside and outside the container main body, and a liquid inside the container main body provided on the liquid delivery channel by a pushing operation. Pump means for sending out a fixed amount of the outside,
Simplified liquid purification including a porous membrane provided on the liquid delivery passage upstream of the pump means for disinfecting the liquid
As a device, the pump means is configured to form a portion of the liquid delivery flow passage having a predetermined length.
And an outer cylinder whose inside is a pump chamber, and an outer cylinder
And reciprocating in the axial direction in a liquid-tight manner with respect to the outer cylinder.
An inner cylinder whose inside is a liquid delivery channel,
It is provided at the insertion tip of the inner cylinder, and
By the pushing movement, the liquid is delivered to the liquid delivery passage in the inner cylinder.
First valve means for permitting inflow and the perforation of the outer cylinder
It is provided at the site on the side of the porous membrane to prevent the liquid from the side of the porous membrane.
Allows inflow, but prevents outflow of liquid to the porous membrane side
And a second valve means for performing the simple liquid purifying device. 2. The pump means for the outer cylinder
Restriction of the pushing movement amount of the inner cylinder to be switchable in multiple stages
To, simple liquid purifying device according to claim 1, characterized in that it comprises a mechanism for the discharge amount is variable.