JPH09242905A - Check valve having fluid flow rate adjusting function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase, decrease, and adjust take-out flow rate of fluid filled in a storage bag made of a plastic film when the fluid is taken out to the outside through a check valve provided at a side fringe of the storage bag. SOLUTION: This check valve V consists of a check valve main body 1 which is flat and made of plastic and an instrument 2 for taking out fluid which is inserted into a flow passage of the check valve main body 1. The instrument 2 for taking out fluid consists of a guide pipe 4 and a flow pipe 5 which is inserted into the guide pipe 4 in such a manner that it can advance and retract freely, and is longer than the guide pipe 4 and is shorter than the check valve main body 1. A flow passage opening member 9 of the check valve main body 1 which consists of a flat platelike body is formed on a tip side of the flow pipe 5, and a stopper 10 which is also used as knob is formed on a basic end side. Moreover, a flow-in port 11 of fluid is provided in the flow pipe 5, and the instrument 2 for taking out fluid is inserted into the flow, passage of the check valve main body 1 to fit an outer peripheral face of the guide pipe 4 into an open flow passage on the basic end side of the check valve main body 1 tightly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling the flow rate of a fluid filled in a storage bag made of, for example, a plastic film through a check valve provided on the periphery of the storage bag. The present invention relates to a check valve having a function of adjusting a flow rate of a fluid configured to be able to increase and decrease.

[0002]

2. Description of the Related Art There have been provided various types of non-return valves for sealing a fluid in a bag, a container or the like and extracting the fluid when necessary. A utility model of Japanese Patent No. 3015272, which has been filed and registered, is known.

[0003] The above-mentioned registered utility model relates to a device for filling and discharging a fluid in a sealed bag and a fluid sealed bag provided with the device. The guide tube is formed of a guide tube tightly fitted into the opening on the outer end side of the check valve made of a plastic film, and a fluid flow tube longer than the guide tube inserted into the guide tube so as to be able to move forward and backward. At least one guide groove extending in the axial direction penetrates the inner surface of the through hole of the guide tube, and at least one engaging step is provided at a position outside the guide groove at the outer edge of the outer edge. Further, a protrusion having a required length extending in the axial direction to be inserted into the guide groove of the guide tube is provided on an outer end of the outer surface of the fluid flow tube, and a stopper for taking and photographing is provided on the outer end. Is provided.

Therefore, it is not necessary to perform a complicated operation such as inserting a thin tube such as a straw into a check valve every time the fluid is charged and discharged, and the sealing bag can be provided at any place as needed. Although it is possible to achieve a useful and remarkable effect that the fluid can be smoothly charged and discharged to and from the fluid, it has the following undesirable problems.

There is no member for adjusting the flow rate of the fluid in either the check valve made of plastic film or the fluid filling and discharging instruments inserted in the flow path of the check valve. When it is necessary to increase or decrease the amount of fluid discharged (extracted), it is impossible to cope with it. In order to perform the check function of the check valve, the flow pipe must be extended outside the bag. There is a problem that it has to be withdrawn, which hinders the handling of mobile phones and other items.Furthermore, the repetitive reciprocating movement of the flow pipe damages the check valve made of thin plastic film and reduces or loses the check function. There is a problem such as letting.

[0006]

DISCLOSURE OF THE INVENTION The present invention has been developed to solve the above-mentioned problems, and is capable of increasing and decreasing the flow rate of a fluid, and opening and closing a check valve to form a thin plastic film. Of the check valve main body made of the above, and it is not necessary to protrude the opening / closing operation member for a long time at the time of opening / closing operation of the check valve, and therefore, there is provided such an advantage that it does not hinder carrying and other handling. An object of the present invention is to provide a check valve having a function of adjusting a flow rate of a fluid.

[0007]

As a means for solving the above-mentioned problems and achieving the object, the present invention provides a flat check valve body made of a plastic film, and a check valve body in a flow passage of the check valve body. A check valve having a function of adjusting the flow rate of fluid constituted by a device for taking out a fluid to be inserted, the device for taking out the fluid being inserted into a guide tube and the guide tube so as to be able to advance and retreat. A fluid flow pipe longer than the guide pipe and shorter than the flat check valve main body. The check valve main body made of a flat plate-like body is provided at the distal end side of the fluid flow pipe. A flow path opening member is formed, a stopper for taking and taking pictures is formed on the base end side, a fluid inlet is opened in the flow pipe, and the fluid removal device is connected to the flow path of the check valve body. And insert the outer peripheral surface of the guide tube into the open flow passage on the base end side of the check valve body. There is provided a check valve having a flow amount adjusting function of the fluid constituted by densely fitted.

Further, the present invention relates to a check valve having a function of adjusting a flow rate of a fluid having the above-mentioned structure, wherein the flow path opening member is formed by a flat plate having a width longer than the outer diameter of the flow pipe. A check valve having a function of adjusting the flow rate of fluid, in which
And at least one engaging groove is provided on the inner surface of the proximal edge of the through hole of the guide tube of the fluid extracting device, and the guide tube is formed on the proximal outer surface of the flow tube of the fluid extracting device. A check valve having a function of adjusting the flow rate of a fluid provided with a short ridge engaged with the engagement groove, and a flow path opening member of a check valve body formed at the distal end of the guide pipe and the distal end of the flow pipe And a check valve having a function of adjusting the flow rate of a fluid having a fluid inlet opened in the flow pipe.

Further, the present invention relates to a check valve having the function of adjusting the flow rate of a fluid having the above-mentioned structure, wherein a flow pipe opening member of a check valve main body formed at a distal end side of the flow pipe has a flow pipe. A check valve having a function of adjusting the flow rate of a fluid in which an inlet for a fluid communicating with the flow path is opened, and between a distal end portion of a guide pipe and a flow path opening member of a check valve body formed on a distal end side of the flow pipe. A check valve having a function of adjusting the flow rate of the fluid, which opens the inlet of the fluid in the flow pipe and opens the inlet communicating with the flow pipe in the flow path opening member of the check valve body. Non-return valve having a function of adjusting the flow rate of a fluid in which a thin film made of silicone oil or another low-viscosity inert liquid and having excellent close contact and releasability is applied to the inner surface on the tip side of a flat check valve body and formed. Each is provided with a valve.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Some preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

[0011]

First Embodiment FIGS. 1 to 9 show a first embodiment of the present invention. In this embodiment, a check valve V having a function of adjusting the flow rate of fluid is a flat valve. The check valve main body 1 includes a check valve main body 1 and a fluid removing device 2 inserted into a flow path of the check valve main body 1.

Thus, the flat check valve body 1 is formed by laminating two elongated, heat-adhesive plastic films of the same shape and the same size in a rectangular shape, and bonding both side edges a, a by heat. In this embodiment, a short non-return valve 1a made of a thin plastic film is provided in the flow path 3 on the distal end side. Are arranged and interposed.

[0013] The manner of mounting the above-mentioned check piece 1a is as follows.
Although illustration is omitted in detail, actual fairness 3-14614
As described in Japanese Patent Application Laid-Open Publication No. H11-115, both sides are adhered to both sides of the flow path 3, and in the flow direction of the liquid,
The proximal edge of the check piece 1a is adhered to one of the inner surfaces of the two plastic films to form a closed portion and an open portion, and the distal edge of the check piece 1a is The two plastic films are open to both inner surfaces without being adhered to each other, and the liquid is formed by a gap formed between one open portion on the distal end side and the open portion on the base end side. Are arranged to circulate.

In FIG. 4 showing a state in which the fluid flow path 3 is opened, although not shown, the inner surface of one plastic film on the tip side of the check valve body 1 and the inner surface On the inner surface of the opposite check piece 1a, a thin film made of silicone oil or other low-viscosity inert liquid and having excellent close contact and releasability is applied and formed. The check valve is configured so as to be able to satisfactorily close and open the check valve at the end of the flow path 3 of the stop valve body 1.

Next, the fluid removing device 2 is densely packed in the opening flow path on the base end side of the check valve main body 1 made of a plastic film which is mounted on the periphery of a fluid storage bag B described later. It comprises a guide tube 4 to be fitted, and a fluid flow tube 5 having a dimension longer than the guide tube 1 inserted into the guide tube 4 so as to be able to advance and retreat, but shorter than the check valve body 1. .

In this embodiment, the guide tube 4 is made of a hard plastic material, and is formed of a short tube having an octagonal cross section. The guide tube 4 is particularly shown in FIGS. Two engagement grooves 7, 7 opposed to two inner surfaces of a base end edge of a through hole 6 penetrating in the axial direction, and a plurality of outer surfaces projecting obliquely upward toward the outer end. And a plurality of hooking projections 8... 8 provided.

In this embodiment, the fluid flow pipe 5 is formed by molding a hard plastic material.
The check valve main body 1 formed of a flat plate-like body having a width longer than the outer diameter of the flow pipe 5 and a thickness shorter than the outer diameter at the distal end side.
Of the check valve main body 1 and the distal end of the guide pipe 4 are provided integrally with the flow path opening member 9 of FIG. , A plurality of fluid inlets 11... 11 are provided in a cylindrical flow pipe 5, and the guide pipe 4 Engagement groove 7,
There are two short ridges 12, 12 which engage with 7.

The flow pipe 5 has a length approximately twice as long as the guide pipe 4 and has an outer diameter that allows the pipe 6 to be smoothly and smoothly inserted into the through hole 6 of the guide pipe 4. A protruding ridge 13 for preventing the guide tube 4 from slipping out of the guide tube 4 is provided at a position about a half of the entire length of the tube 5 and away from the tip.
Is provided around.

In this way, the flow pipe 5 having the appropriate degree of softness immediately after being formed into a die is prevented from being pulled out of the through-hole 6 of the guide pipe 4 having the above-described structure. Ridge 13
Is inserted to a position where it passes through the distal end of the guide pipe 4, and the flow-through pipe 5 is connected to the guide pipe 4 by the protrusion-preventing ridge 13 and the flange-shaped stopper 10.
The fluid extracting device 2 is designed so that it does not come off on either the distal end side or the proximal end side.

Next, with the fluid removing device 2 constructed as described above, the taking / stopper 10 provided on the flow pipe 5 is made to protrude outside the check valve body 1 and the flow pipe 5 Is inserted into the flow path 3 of the check valve body 1 in a state where the tip side of the
When the thin plastic film of the check valve body 1 is brought into close contact with the outer surface of the guide tube 4 by fitting the guide tube 4 into the open flow passage on the base end side of the check valve body 1, the outer surface of the guide tube 4 The guide tube 4 is tightly and securely fitted and does not come off in combination with the catching action of the plurality of catching projections 8. The check valve V has the following configuration.

The operation of the check valve V will be described below.
8 and 9, the check valve V is inserted into the storage bag B from the tip side at the edge of the liquid storage bag B made of, for example, a plastic film, and A state in which the taking-off stopper 10 provided on the base end side of the circulation pipe 5 of the take-out device 2 is protruded outside the periphery of the storage bag B, and in this state, the inner surface inside the periphery of the storage bag B By tightly bonding the outer surfaces of the corresponding portions of the check valve body 1 to the inside, the inside and the outside of the storage bag B are connected to the flow path 3 on the distal end side of the check valve body 1 and the flow pipe 5 of the device 2 for taking out fluid. The check valve V is installed in the storage bag B in a state where communication is possible via only the check valve V.

Next, when filling and enclosing the liquid in the storage bag B, the liquid may be supplied from the base end of the flow pipe 5 protruding outside the storage bag B using a liquid supply tool or the like. Distribution pipe 5
The liquid supplied therein flows into the flow path 3 on the distal end side of the check valve main body 1 through the inflow port 11, pushes open the distal end of the check valve main body 1, and flows into the storage bag B. If the supply of the liquid is stopped when the required amount of liquid is filled, the flow path 3 on the distal end side of the flat check valve body 1 is closed by the internal pressure in the storage bag B,
The liquid is sealed in the storage bag B by the check action.

At this time, since the thin check piece 1a is provided in the flow path 3 on the distal end side of the check valve body 1, the sharp check action of the check piece 1a causes The liquid is reliably sealed in the storage bag B. In addition to this, the inner surface of the check piece 1a and the inner surface of the plastic film of the check valve body 1 opposed to the inner surface have silicon oil, Since a thin film made of other low-viscosity inert liquid and having excellent close contact and releasability is formed by coating, both inner surfaces can be more reliably brought into close contact with each other to improve the liquid enclosing effect.

Next, when taking out the liquid in the storage bag B,
The flow pipe 5 may be slightly pulled back to release the engagement between the engagement groove 7 of the guide pipe 4 and the ridge 12 of the flow pipe 5 and rotate the flow pipe 5 appropriately, for example, from the state shown in FIG. When rotated about 90 degrees until the state shown in FIG. 9 is reached, the flow path opening member 9 of the check valve main body 1 provided at the distal end side of the flow pipe 5 causes the flow path 3 on the distal end side of the check valve main body 1 to move. Since the opening is greatly opened, by inclining the storage bag B in that state, a large amount of liquid is reliably taken out from the base end side of the flow pipe 5 via the flow path 3 and the inflow port 11 in a short time.

In the above-mentioned removing operation, when it is desired to reduce the amount of liquid to be removed, not shown, it is necessary to reduce the amount of rotation of the flow pipe 5 to reduce the degree of opening of the flow path 3 by the flow path opening member 9. Thus, the amount of liquid taken out per unit time can be reduced and adjusted.

As is clear from the above description, the first embodiment of the present invention has the following effects. (1) If the long width surface of the flow path opening member 9 is made parallel to the flat surface of the check valve body 1, the flow path 3 of the check valve body 1 is securely closed as shown in FIG. Therefore, the liquid in the storage bag B is securely sealed and does not flow out unexpectedly. (2) By rotating the flow pipe 5 appropriately and rotating the flow path opening member 9, the flow path 3 of the check valve main body 1 is opened and the liquid in the storage bag B can be reliably taken out. Also, by adjusting the amount of rotation of the flow path opening member 9, the opening degree of the flow path 3 can be adjusted, so that the amount of liquid taken out per time can be reliably increased or decreased. (3) The opening and closing of the flow path is performed by the turning operation of the flow pipe 5 and is not performed by the advancing and retreating operation of the flow pipe 5 as in the conventional product described above. The degree of damage is extremely small, and the check valve body 1 can be used for a long time. (4) The withdrawal amount of the flow tube 5 for rotating the flow tube 5 is small, and does not protrude outside the storage bag B for a long time, so that it is easy to carry and carry. (5) In the flow path 3 on the distal end side of the check valve main body 1, a check piece 1a that performs a sharp check operation is provided, so that the check action is reliable and the leakage of liquid is ensured. Can be prevented. (6) The inner surface of the check piece 1a and the inner surface of the plastic film of the check valve body 1 facing the inner surface are excellent in close contact and mold releasability made of silicone oil or other low-viscosity inert liquid. Since the thin film is formed by coating, the inner surfaces are more reliably brought into close contact with each other, and the effect of enclosing the liquid can be improved.

FIGS. 10 and 11 show a fluid removing device 2a used in the second embodiment of the present invention. The fluid removing device 2a according to the first embodiment is in communication with the fluid removing device 2a. The structure of the check valve main body 1 is the same as that of the check valve main body 1 except that an inflow port 11a of a fluid communicating with the flow pipe 5 is opened in the flow path opening member 9 of the check valve main body 1 formed on the distal end side of the pipe 5. The other structure, including the structure of attaching the fluid take-out device 2a to the check valve body 1, is the same as that of the first embodiment. Therefore, the illustration of the check valve main body 1 is omitted, and the same parts as those in the first embodiment are denoted by the same reference numerals.

According to the second embodiment, all the effects of the first embodiment can be obtained, and the position of the inflow port 11a is larger than that of the first embodiment. Since it is slightly closer to the opening at the end of the first flow path 3, the fluid can be taken out slightly earlier.

FIGS. 12 and 13 show a fluid extracting device 2b used in the third embodiment of the present invention. The fluid extracting device 2 in the first embodiment is the same as the fluid extracting device 2b. In addition to the fluid inflow port 11 provided in the removal instrument 2, the flow path opening member 9 of the check valve body 1 formed on the distal end side of the flow pipe 5, similarly to the second embodiment. , Distribution pipe 5
Only the point that the fluid inlet 11a communicating with the check valve main body 1 is opened, other structures including the structure of the check valve main body 1 and the mounting structure of the fluid extracting device 2b with respect to the check valve main body 1 are also first. This is the same as the embodiment of FIG. Therefore, the illustration of the check valve main body 1 is omitted, and the same parts as those in the first embodiment and the second embodiment are denoted by the same reference numerals.

According to the third embodiment, all the effects of the first and second embodiments can be obtained, and the fluid inlet port can be compared with the first and second embodiments. There is an advantage that the inflow amount of the fluid into the flow pipe 5 under the same condition can be increased because the number is larger.

Although the main embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the invention. Of course is possible.

[0032]

According to the present invention, which has the above-mentioned structure and is used as described above, the following effects can be obtained.

(1) If the flat surface of the flow path opening member is made parallel to the flat surface of the check valve main body, the flow path of the check valve main body is securely closed, so that the fluid in the storage bag is Is securely sealed and does not flow out unexpectedly.

(2) By rotating the flow pipe appropriately and rotating the flow path opening member, the flow path of the check valve main body is opened, and the fluid in the storage bag can be reliably taken out. By adjusting the amount of rotation of the flow path opening member, the degree of opening of the flow path can be adjusted, so that the amount of fluid taken out per time can be reliably increased or decreased.

(3) The opening and closing of the flow path is performed by the rotation operation of the flow pipe, and is not performed by the advance / retreat operation of the flow pipe unlike the conventional product described above. The degree of damage is extremely small, and the check valve body can be used for a long time.

[Brief description of the drawings]

FIG. 1 is a front view showing a first embodiment of the present invention.

FIG. 2 shows a flow pipe of the fluid removing device in FIG.
It is a front view of the state turned by a degree.

FIG. 3 is an enlarged end view as viewed from the right side of FIG. 1;

FIG. 4 is an enlarged end view seen from the right side of FIG. 2;

FIG. 5 is a front view showing only a fluid removing device.

FIG. 6 is a sectional view taken along line AA of FIG.

FIG. 7 is a cross-sectional view of a state in which the fluid flow pipe in FIG. 6 is slightly pulled out to the left.

8 is a perspective view showing a state in which the check valve having the function of adjusting the flow rate of the fluid shown in FIG. 1 is provided in a liquid storage bag.

9 is a perspective view of a check valve having a function of adjusting a flow rate of a fluid in FIG. 8 in a state in which a flow pipe of a device for removing fluid is rotated to open a flow path.

FIG. 10 is a front view showing only a fluid extracting device according to a second embodiment of the present invention.

FIG. 11 is a sectional view taken along the line BB of FIG. 10;

FIG. 12 is a front view showing only a fluid extracting device according to a third embodiment of the present invention.

FIG. 13 is a sectional view taken along the line CC of FIG. 12;

[Explanation of symbols]

 V Non-return valve having fluid flow control function 1 Non-return valve body 1a Non-return piece 2 Fluid removal instrument 2a Fluid removal instrument 2b Fluid removal instrument 3 Flow path 4 Guide pipe 5 Flow pipe 6 Flow Hole 7 Engagement groove 8 Hooking projection 9 Flow path opening member 10 Stopper for taking and taking a picture 11 Inflow port 11a Inflow port 12 Short ridge 13 Protrusion for removal prevention B Liquid storage bag

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[Procedure amendment]

[Submission date] June 4, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction contents]

Thus, the flat check valve body 1 is formed by laminating two elongated, heat-adhesive plastic films of the same shape and the same size in a rectangular shape, and bonding both side edges a, a by heat. In this embodiment, a short non-return piece 1a made of a thin plastic film is provided in the flow path 3 on the distal end side. Are arranged and interposed.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0015

[Correction method] Change

[Correction contents]

Next, the fluid removing device 2 is densely packed in the opening flow path on the base end side of the check valve main body 1 made of a plastic film which is mounted on the periphery of a fluid storage bag B described later. It comprises a guide pipe 4 to be fitted, and a fluid flow pipe 5 having a size longer than the guide pipe 4 inserted into the guide pipe 4 so as to be able to advance and retreat, but shorter than the check valve body 1. .

Claims (7)

[Claims] 1. A non-return valve having a function of adjusting a flow rate of a fluid, comprising a flat check valve body made of a plastic film, and a fluid extracting device inserted into a flow path of the check valve body. A valve, wherein the fluid removal device includes a guide tube,
A fluid flow pipe longer than the guide pipe and shorter than the flat check valve main body, which is inserted into the guide pipe so as to be able to advance and retreat freely. A flow path opening member of the check valve body composed of a body, a shooting / stopper formed at a base end side, a fluid inlet opening in a flow pipe, and a device for removing the fluid. Is inserted into the flow passage of the check valve main body, and the outer peripheral surface of the guide tube is closely fitted into the open flow passage on the base end side of the check valve main body. A check valve. 2. The check valve according to claim 1, wherein the flow path opening member is formed by a flat plate having a width longer than the outer diameter of the flow pipe. 3. An at least one engaging groove is provided on an inner surface of a proximal end portion of a through-hole of a guide tube of a fluid extracting device, and at a proximal outer surface of a flow tube of the fluid extracting device. The check valve according to claim 1 or 2, further comprising a short protrusion that engages with the engagement groove of the guide tube. 4. A fluid inlet is opened in the flow pipe, located between the front end of the guide pipe and the flow path opening member of the check valve body formed on the front end side of the flow pipe. A check valve having a function of adjusting a flow rate of a fluid according to any one of claims 2, 3 and 4. 5. A flow inlet according to claim 1, wherein an inlet for a fluid communicating with the flow pipe is opened in the flow path opening member of the check valve main body formed at the distal end side of the flow pipe. Non-return valve with fluid flow control function. 6. A fluid inlet is provided between the guide tube and a flow path opening member of a check valve body formed on a distal end side of the flow tube to open a fluid inlet in the flow tube. 4. The check valve according to claim 1, wherein an inflow port communicating with the flow pipe is opened in the flow path opening member of the stop valve body. 7. A flat check valve body, wherein a thin film made of silicone oil or another low-viscosity inert liquid and having excellent close contact and releasability is applied and formed on the inner surface on the distal end side of the flat check valve body.
3. The check valve according to any one of 3, 4, 5, and 6, wherein the check valve has a function of adjusting a flow rate of a fluid.