JP2008138852A - Relief valve mechanism and container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mechanism having extremely simple construction for preventing the leakage of liquid from a washed bottle. <P>SOLUTION: The relief valve mechanism comprises a valve chest 6, a needle 7 freely movable approximately up and down and enclosed in the valve chest 6, a gas inlet 8 communicated with the approximately lower part of the valve chest via an internal space, and a gas outlet 9 communicated with the approximately upper part of the valve chest toward the outside. When it is left at rest, the needle 8 is located at the lower part of the valve chest to cover the gas inlet 8, thus releasing gas from the internal space. When the internal space is pre-loaded, the needle 7 is located at the upper part of the valve chest with the pre-load to block the gas outlet 9, thus substantially preventing the flow of the gas out of the gas outlet 9. This results in the gas to be automatically released from the internal space to the outside. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a so-called gas relief valve mechanism for preventing liquid leakage of a cleaning bottle, which can eject liquid easily.

  In basic processing operations in a wide range of chemical fields such as organic chemistry, inorganic chemistry, synthetic chemistry, biochemistry, biochemistry, etc., the operation of pouring a solvent into a processing operation object and washing it is performed very frequently. . Alternatively, in the chemical treatment process, an operation of adding a solvent many times in a complicated manner is very often performed depending on the reaction state. In such an operation, it is time-consuming and time-consuming to add or pour the solvent using a pipette or the like by opening the closure stopper of the solvent container, and in extreme cases, the opportunity to end the reaction is lost. It may lead to failure such as doing. Further, there are often cases where it is difficult or inconvenient to drop with a dropping funnel.

  In order to solve such a problem, a so-called washing bottle or a container called a washing bottle in which a crane-like thin tube is attached to a flexible polymer container is often used easily. Since this type of container is made of a flexible polymer, the internal liquid can be efficiently discharged from the narrow tube simply by gripping the container and applying force. Returning to the original state, the liquid can be discharged again. In addition, the narrow tube is bent like a crane's neck and head, and the tip is processed to be thin, so that it is easy to inject liquid freely to the desired location, and the discharge speed can be adjusted by adjusting the force. Is possible. Furthermore, since there is no conspicuous opening other than a thin thin tube, contamination of foreign matters such as foreign substances and moisture in the air in the container, and on the contrary, release of solvent vapor, which is undesirable for the human body, to the atmosphere is almost a problem. Is not something.

However, such a convenient cleaning bottle has a problem that the liquid in the container or air expands as the room temperature rises, thereby leaking the liquid inside. In particular, when the washing bottle is left while performing the heating operation, it is exposed to the heat, and the liquid inside is likely to leak or squirt, and the liquid is highly flammable or harmful. The problem is serious.
In order to solve such a problem, a cleaning bottle having a cock that escapes the gas inside the container has been put to practical use, but there is a trouble that it is necessary to close the cock every time it is used. It is difficult to say that it is a satisfactory solution because it has a problem that the cock is forgotten to be opened later and liquid leakage occurs.

  An object of the present invention is to provide a mechanism capable of preventing liquid leakage from a cleaning bottle with an extremely simple mechanism without requiring the above-described complicated operation, and a container provided with the mechanism.

The present invention has an internal space in which liquid can be stored,
It has a structure that can pressurize the internal space from the outside world,
The liquid stored in the internal space can be ejected to the outside, and can be used in a container having a narrow tube that communicates from the bottom of the internal space to the outside of the container.
A relief valve mechanism capable of automatically and gradually releasing the gas in the internal space to the outside, the relief valve mechanism,
Have a valve chamber,
In the valve chamber, a mover that is freely movable up and down is enclosed.
A gas inlet communicates from the internal space substantially below the valve chamber,
A gas outlet communicates with the outside world at a substantially upper part of the valve chamber,
When stationary, the mover is located at the lower part of the valve chamber, covers the gas inlet, and can gradually release the gas in the internal space,
When the internal space is pressurized, the movable member is positioned at the upper part of the valve chamber by the pressurized pressure, thereby blocking the gas outlet and substantially preventing gas from flowing out from the gas outlet. It consists of the relief valve mechanism characterized by this.
It is preferable that the movable element is a substantially conical body that is narrowed toward a substantially upper part.

The present invention also provides:
It has an internal space that can store liquid,
It has a structure that can pressurize the internal space from the outside world,
A container having a narrow tube communicating from the bottom of the internal space to the outside of the container, and capable of ejecting the liquid stored in the internal space to the outside; and
It consists of a container provided with the relief valve mechanism.

  By using the relief valve mechanism of the present invention, the gas inside the container is automatically and appropriately released, so there is no need for complicated operations each time it is used, and the washing bottle can be used, and the cock is closed. The worry of liquid leakage due to forgetting is also eliminated.

  The present invention is described in detail below.

  Hereinafter, a cleaning bottle to which the relief valve mechanism of the present invention can be applied will be described with reference to the accompanying drawings as appropriate. The cleaning bottle itself has the same general configuration as that of a conventional one, except for the relief valve mechanism. That is, the washing bottle has a container body 1 made of a flexible polymer such as polyethylene, polypropylene, or Teflon (registered trademark). As shown in FIG. 1, the internal space has a structure capable of containing a liquid 1b such as a solvent, and the upper portion is occupied by the gas portion 1a depending on the use situation. Furthermore, it has a thin thin tube 2, is bent like a crane's neck and head, and its tip 2a is processed to be thin and formed so that an appropriate amount of liquid can be easily ejected to a desired location. Yes. On the other hand, it is preferable that the end 2b inside the container of the thin tube 2 reaches almost the bottom of the container in order to discharge the liquid to the end. In the drawing, the end 2b inside the container of the thin tube 2 is located in the vicinity of the center of the bottom of the container, but if it is disposed so as to be located in the periphery of the bottom, by tilting the container to that position, This is preferable because the amount of liquid remaining without being completely discharged becomes smaller. In addition, the constituent material of the thin tube is often composed of a polymer having flexibility so as to bend freely to some extent.

Further, the narrow tube 2 is provided through the fitting insertion portion 3a of the thin tube anchoring member 3, but the thin tube anchoring member has a close contact structure in which the thin tube anchoring member fitting portion 3b and the container fitting portion 1c are detachable by a spiral structure or the like. In this case, it is preferable to make it detachable and use it for replenishing the liquid, but a liquid replenishing hole may be provided separately.
Such a cleaning container can be used by simply holding the container 1 and applying a force so that the internal liquid 1b is ejected through the thin tube 2 to the outside.

Now, in such a structure, when the gas part of the container upper part expand | swells by a temperature rise, the liquid 1b will be pressurized, and it has the problem that a liquid leaks to the outside through the thin tube 2 arbitrarily. In addition, as shown in FIG. 2, there is known a mode in which the gas in the container is manually released by the lever operation valve 4 having the lever 4 a on the thin tube mooring member 3. The risk of liquid leakage due to forgetting to open is not solved.
This problem is solved by the automatic relief valve mechanism of the present invention, and will be described below with reference to the drawings. However, the present invention is not limited to these.
That is, the relief valve mechanism of the present invention is provided so as to penetrate substantially the top of the washing bottle, for example, above and below the thin tube mooring member 3, so that the gas in the container can be exclusively discharged to the outside. Is the same as the lever operating valve of the prior art.

  The structure of the automatic relief valve mechanism of the present invention has a relief valve function for automatically and gradually releasing the gas in the internal space of the washing bottle container to the outside, and the mechanism is as shown in FIG. The valve structure 5 has a valve chamber 6. The valve structure is preferably substantially cylindrical so that it can be easily processed and is preferable in terms of operational stability. However, the upper and lower ends of the valve structure do not have to be limited to a flat circular shape, and may be a concave or convex curved surface such as a spherical surface or a cone, or a cross-sectional shape obtained by obliquely cutting a cylinder. It may be. This valve structure preferably has an outer long diameter in a plane perpendicular to the long axis of 2 to 10 mm, more preferably 5 to 8 mm. If the lower limit of the numerical range is not reached, it becomes difficult to form a sufficiently thick valve chamber, gas inlet, gas outlet, etc. and an outer wall of sufficient thickness surrounding them. Handling becomes inconvenient, such as being in the way when attached, and neither is preferable. The major axis is a direction axis that passes through a gas inlet, a valve chamber, a mover, and a gas outlet, which will be described later, and the same applies hereinafter. In the valve structure of the present invention, it is preferable that the major axis is vertical as much as possible when the container is placed on a flat ground, but there is almost no problem if the displacement is 15 ° or less. Therefore, the long axis may be regarded as synonymous with the vertical direction. Further, the length in the major axis direction is preferably 4 to 40 mm, more preferably 10 to 25 mm. If the lower limit of the numerical range is not reached, it becomes difficult to form a sufficiently long valve chamber, gas inlet, gas outlet, etc. and a structural wall having a sufficient thickness to partition them, and if the upper limit is exceeded, washing bottles, etc. It becomes inconvenient to handle such as being in the way when attached to, and neither is preferable. Moreover, the thickness of the outer wall of the valve structure is preferably 0.2 to 4.5 mm, more preferably 0.5 to 3.5 mm. If the value falls below the lower limit of the numerical range, the strength becomes insufficient. If the value exceeds the upper limit, it becomes difficult to form a sufficiently thick valve chamber, gas inlet, gas outlet, etc., which are not preferable. The method for assembling the valve structure or assembling the washing bottle to the thin tube mooring member or the like is not particularly limited, such as a fitting type, a screwing type, a method using a return structure, or a bonding method using a molten polymer.

  This valve structure has a valve chamber 6. This valve chamber encloses a mover, which will be described later, so that it can move substantially vertically. There are a gas outlet and a gas inlet, which will be described later, on the upper edge and the lower edge of the valve chamber, respectively, and when the movable element abuts on this portion, the movable limit is determined and the closing function is exhibited. The length in the major axis direction of the valve chamber is preferably 0.5 to 35 mm, more preferably 1 to 5 mm. If the lower limit of the numerical range is not reached, the valve operation of the mover in the valve chamber becomes insufficiency, and if it exceeds the upper limit, the handling becomes inconvenient, for example, when it is attached to a washing bottle or the like. The inner long diameter in a cross section perpendicular to the major axis direction of the valve chamber is preferably 0.5 to 9 mm, more preferably 2 to 6 mm. If the lower limit of the numerical range is not reached, the valve operation of the mover in the valve chamber becomes insufficiency, and if it exceeds the upper limit, the handling becomes inconvenient, for example, when it is attached to a washing bottle or the like. In the valve chamber, a mover 7 that is freely movable up and down freely within a restricted range is enclosed. The mover may be formed so as not to come out of the valve chamber due to size or shape restrictions. That is, the mover need not be structurally coupled to other parts of the valve structure. It is preferable that the movable element is a substantially conical body that is tapered toward the upper part. Alternatively, the substantially cone may have a rounded tip or a truncated cone shape. Further, it may have a shape in which a rod-like body such as a cylinder, an elliptical column, or a prism is connected to the lower part of the cone, or a shape in which the rod-like body is connected to the tip of the cone. In addition, it is preferable that the average angle of a cone part is 15-75 degree | times. Note that, as shown in FIG. 4, the angle is an acute angle formed by the cone and the cone surface of the cone base portion and the major axis in the cross section including the major axis, and the average angle is the figure. As shown in FIG. 5, for both ends of the cone or the cone base portion in the major axis direction, in the right triangle that has half the diameter difference at both ends and the length between both ends as one side across the right angle, The angle formed by the sides of the length between both ends is taken as the average angle. Alternatively, the cone portion may be a curved line that is concave or convex outward in a cross section passing through the long axis. The bottom of the mover is preferably a plane perpendicular to the long axis of the mover, but may be a concave or convex cone surface or a curved surface such as a spherical surface. Moreover, about the magnitude | size of a needle | mover, about the width | variety of the part where the width becomes the largest, Preferably it is 0.3-8 mm, More preferably, it is 1-5 mm. Or the space | interval of the circumference | surroundings of a needle | mover with respect to the width | variety of a valve chamber inside becomes like this. Preferably it is 0.01-4 mm, More preferably, it is 0.1-1 mm.

  The length in the major axis direction of the mover is preferably 1 to 35 mm, more preferably 2 to 10 mm. Further, the movable range of the mover in the major axis direction is preferably 0.1 to 30 mm, more preferably 0.2 to 5 mm. Also, if the length of the valve chamber is longer than the width in the vertical direction, the length of the mover is larger than the width of the valve chamber so that the mover does not roll over or reverse upside down. Is preferably 0.1 to 30 mm, more preferably about 0.5 to 10 mm. Furthermore, since it is necessary to release the gas inside the container to such an extent that liquid does not leak from the thin tube, the weight is preferably 1 to 40 mg, more preferably 5 to 20 mg.

In the example shown in FIG. 6, the mover has a shape in which a cylindrical rod-like body is placed on the upper part of the truncated cone. Is partially inserted into the gas outlet. Thereby, the hydrodynamic disturbance is suppressed, and the mover can reliably and quickly close the gas outlet.
A gas inlet 8 communicates from the interior space of the container substantially below the valve chamber. In this case, the internal space is substantially synonymous with the gas portion 1a in the container body. The gas inlet allows the gas in the container body to pass through the valve chamber, and even satisfies the condition that the mover is blocked in a stationary state substantially below the valve chamber and the mover does not fall into the internal space. There are no restrictions. Usually, the gas inlet 8 has a gas inlet internal space side opening 8a, a gas inlet passage 8b, and a gas inlet valve chamber side opening 8c. Here, the structure that defines the lowermost movement limit of the mover in the valve chamber is the gas inlet valve chamber side opening, and the portion on the inner space side is the gas inlet passage, and the opening portion in the inner space Is the gas inlet internal space side opening. As a special case, when the gas inlet internal space side opening and the gas inlet valve chamber side opening are aligned at the edge of the innermost diameter portion, that is, a flattened shape that is thinner toward the center hole. In the case of a half-partition wall that is a toroidal shape, a gas inlet passage cannot be present with the naked eye, but this is not practical because the strength of the innermost edge is low. The gas inlet passage preferably has a substantially cylindrical shape, but may have the shape of a truncated cone or an inverted truncated cone on the plane including the major axis, or a polygon or ellipse on the plane perpendicular to the major axis. It may be non-circular. Alternatively, the gas inlet may be divided into a plurality of pieces, or may be provided through a filtration layer or a mover drop prevention network made of a nonwoven fabric, a porous film, a network structure, a lattice, or the like. The distance from the bottom of the movable element to the opening in the gas inlet container in the stationary state is preferably about 0.5 to 35 mm, more preferably about 5 to 20 mm so that droplets inside the container do not easily enter. However, the path may be zigzag shaped by providing a barrier or the like. The opening area at the gas inlet valve chamber side opening where the gas inlet is in contact with the mover is preferably about 0.5 to 8 mm in diameter, more preferably about 1 to 4 mm in circle. The valve chamber side opening of the gas inlet preferably has a shape that fits snugly with the bottom of the mover, so that when the pressure of the gas portion inside the cleaning bottle container rises due to thermal expansion, Before the liquid in the narrow tube is pushed out and leaks, the mover is pushed up to release the gas, and in other stationary conditions, the internal gas can enter the outside or moisture or dust can enter from the outside. It is possible to achieve both contradictory effects of preventing the above. In some cases, the valve inlet side and / or the bottom of the mover at the gas inlet is roughened so that the gas can escape even when the mover is bottomed on the valve chamber side opening. You can keep it. Further, the outer diameter of the gas inlet portion is made smaller than the outer diameter of the other portions, and further, the tapered shape is made easier to attach the washing bottle to the thin tube mooring member or the like.

On the other hand, a gas outlet 9 communicates with the outside at a substantially upper part of the valve chamber. The gas outlet can pass the gas in the valve chamber to the outside of the container, and is closed when the mover rises to the upper part of the valve chamber and satisfies the condition that the mover does not escape to the outside space. There are no restrictions. Usually, the gas outlet has a gas outlet valve chamber side opening 9a, a gas outlet passage 9b, and a gas outlet external side opening 9c. Here, the structure that defines the uppermost movable limit of the mover in the valve chamber is the gas outlet valve chamber side opening, the portion on the outside world side is the gas outlet passage, and the opening portion in the outside space is It becomes the gas outlet outside world side opening. In particular, it is preferable that the length of the gas outlet passage is adjusted so that the upper end of the mover does not protrude outside the container. When the mover closes the gas outlet, the distance from the upper end of the mover to the outside world is preferably 0.5 to 35 mm, more preferably 1 to 10 mm. The gas outlet passage is preferably substantially cylindrical, but may be a truncated cone or inverted truncated cone, and may have a non-circular cross section. Alternatively, the gas outlet may be divided into a plurality of parts in the vicinity of the opening on the gas outlet outside side, as long as it does not hinder the blockage by the mover, and is composed of a nonwoven fabric, a porous film, a network structure, a lattice, etc. It may be via a filtration layer or a mover fall prevention net. For example, even if the gas outlet passage is bent in a reverse L shape or a reverse J shape in the middle so that dust or the like outside the container is difficult to fall and enter, good. The opening area where the gas outlet is in contact with the mover is preferably about 0.5 to 8 mm in diameter, more preferably about 1 to 4 mm. It is preferable that the valve chamber side opening of the gas outlet is shaped so as to fit exactly with the upper part of the mover, so that the airtightness can be maintained when the mover rises to the upper part. . However, as described above, for example, a combination of a cylindrical shape of the gas outlet passage and a conical shape or a truncated cone shape is sufficient for sliding, but the entire gas outlet passage or the opening of the gas outlet passage inside the valve chamber is sufficient. It is also preferable to provide an inclination that matches the inclination of the movable part cone portion. Alternatively, the gas outlet passage may be convexly curved in the cross section passing through the long axis of the valve chamber, and the movable body cone may be convexly curved outward.
When the valve structure is configured as described above, it functions as follows.

That is, the cleaning bottle equipped with the valve mechanism of the present invention is a state before the liquid in the thin tube is pushed out and leaked when the pressure of the gas portion inside the cleaning bottle container rises due to thermal expansion or the like in a stationary state when not in use. In addition, as shown in FIG. 6A, the mover is pushed up to release the gas. In other stationary states, the gas inlet is blocked by the mover, so that the internal gas is prevented from leaking to the outside and moisture and dust from entering the outside. Thus, it is possible to function as an automatic relief valve.
On the other hand, when the cleaning bottle of the present invention is gripped by a human hand and a force is applied, the inner space can be easily pressurized because the outer wall of the container is made of a flexible material. Then, as shown in FIG. 6 (B), the movable member rises to the upper part of the valve chamber due to the pressurization, thereby blocking the gas outlet and substantially preventing gas outflow from the gas outlet. . Therefore, since there is substantially no gas leakage, the pressurized pressure can be efficiently used for the operation of ejecting the liquid inside the container to the outside through the thin tube.

  A particularly suitable combination is that the top end of the mover is in the gas outlet passage so that the gas outlet is not blocked even in a stationary state as shown in FIG. 6A, preferably 0.5 to 35 mm, more preferably 1 It is the aspect inserted about -5 mm. That is, in this case, the mover is longer than the valve chamber. Further, the upper part of the mover has a substantially cylindrical shape, and a conical base is coupled to the lower part thereof. At this time, the ratio of the inner diameter of the gas outlet passage to the outer diameter of the upper cylindrical portion of the mover is preferably 4: 1 to 20:19, more preferably 3: 1 to 10: 9, and the difference is preferably 0.05 to 8 mm, more preferably 0.2 to 4 mm. In such a case, the mover can reliably close the gas outlet without being displaced during pressurization. In addition, in the cross section including the long axis, the movable member lower truncated cone portion has a better occlusion efficiency if it has a concave curve with respect to the outside. Furthermore, the ratio of the length in the major axis direction of the upper bar portion and the lower truncated cone portion is preferably 1:10 to 20: 1, more preferably 1: 5 to 10: 1. Further, instead of using a mover drop prevention network or the like, the mover is not determined by the ratio (or difference) between the outer diameter of the maximum outer diameter portion of the mover and the inner diameter of the gas outlet (or inlet) valve chamber side opening. In the case of mooring or sealing, the ratio between the outer diameter of the maximum outer diameter portion of the mover and the inner diameter of the gas outlet (or inlet) valve chamber side opening is preferably 20: 1 to 20:19, more preferably The difference is preferably 10: 1 to 10: 9, and the difference is preferably 0.1 to 8 mm, more preferably 0.3 to 4 mm.

  As shown in FIGS. 7A and 7B, in the case where the vicinity of the upper edge of the valve chamber and the contact portion of the mover are recognized at different positions in the long axis direction (10a1 and 10a2, 10b1 and 10b2) It is reasonable to consider the portion (10a2, 10b1) closest to the gas outlet in terms of flow path as the uppermost edge of the valve chamber and the gas outlet valve chamber side opening. The same applies to the valve chamber lower edge and the gas inlet valve chamber side opening.

  A valve having a shape and dimensions as shown in FIG. 8 (the unit of the numbers is “millimeters” [mm]) is made of Teflon (registered trademark). The upper cylindrical portion of the mover and the lower rotating concave spherical surface are connected in a differentially continuous manner. This valve was inserted into a hole in which a cock of a 500 ml washing bottle (YK type washing bottle manufactured by Yasumoto Kasei Co., Ltd.) was removed.

  After 480 ml of acetone was put in the washing container and adjusted to 25 ° C. in an open state, the cap, which is a thin tube mooring member, was closed and sealed. When it was allowed to stand at 35 ° C. for 4 hours, no liquid leakage from the thin tube was observed. Furthermore, before and after the standing, the test was performed by holding the washing bottle with a human hand and applying pressure. In each case, the acetone liquid was ejected from the capillary tube without interruption while the pressure was applied. I was able to do it.

It is a basic schematic block diagram of a washing bottle. It is explanatory drawing of the conventional cock operation type relief valve. It is explanatory drawing of the relief valve of this invention. It is the figure which showed the definition of the angle. It is the figure which showed the definition of the average angle. It is an enlarged view explaining the function of the relief valve of this invention. It is the figure which showed the special example of the relief valve of this invention. It is a figure of the Example of the relief valve of this invention.

Explanation of symbols

1: Container main body 1a: Gas portion 1b in the container main body: Liquid portion 1c in the container main body: Fitting portion 2 on the container main body side: Narrow tube 2a: Tip end 2b of the thin tube: Container inner end portion 3: Narrow tube anchoring member 3a : Narrow tube insertion portion 3b: Narrow tube anchoring member side fitting portion 4: Lever operation valve 4a: Lever 5: Valve structure 6: Valve chamber 7: Movable element 8: Gas inlet 8a: Gas inlet container side opening 8b: Gas inlet Passage 8c: Gas inlet valve chamber side opening 9: Gas outlet 9a: Gas outlet valve chamber side opening 9b: Gas outlet passage 9c: Gas outlet external side opening 10a1: Contact portion between upper edge of valve chamber and movable element 10a2: The vicinity of the upper edge of the valve chamber and the movable element 10b1: The vicinity of the upper edge of the valve chamber and the movable element 10b2: The contact area of the upper edge of the valve chamber and the movable element

Claims (3)

It has an internal space that can store liquid,
It has a structure that can pressurize the internal space from the outside world,
The liquid stored in the internal space can be ejected to the outside, and can be used in a container having a narrow tube that communicates from the bottom of the internal space to the outside of the container.
A relief valve mechanism capable of automatically and gradually releasing the gas in the internal space to the outside, the relief valve mechanism,
Have a valve chamber,
In the valve chamber, a mover that is freely movable up and down is enclosed.
A gas inlet communicates from the internal space substantially below the valve chamber,
A gas outlet communicates with the outside world at a substantially upper part of the valve chamber,
When stationary, the mover is located at the lower part of the valve chamber, covers the gas inlet, and can gradually release the gas in the internal space,
When the internal space is pressurized, the movable member is positioned at the upper part of the valve chamber by the pressurized pressure, thereby blocking the gas outlet and substantially preventing gas from flowing out from the gas outlet. A relief valve mechanism characterized by that. 2. The relief valve mechanism according to claim 1, wherein the movable element is a substantially conical body that is tapered toward an upper part. It has an internal space that can store liquid,
It has a structure that can pressurize the internal space from the outside world,
A container having a narrow tube communicating from the bottom of the internal space to the outside of the container, and capable of ejecting the liquid stored in the internal space to the outside; and
A container comprising the relief valve mechanism according to claim 1.

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