JPH08332423A - Valve for use in both erect and inverted positions of manual dispenser and manual dispenser - Google Patents

Abstract

PURPOSE: To control the flow of a liquid whether a dispenser is erect or inverted with one suction tube without bucking air. CONSTITUTION: A bypass 26 extending upward is integrally formed in the intermediate part of a valve body 24, and a check valve 28 is arranged in the bypass 26. A stopper 30 for preventing the check valve 28 from falling off when a dispenser is inverted is installed adjacently to an opening end (upper end) 26U of the bypass 26 in the bypass 26. A tunnel 34 is formed between a valve seat 32 and the stopper 30 in the bypass 26. The check valve 28 is closed when the dispenser is erect. When the dispenser is inverted, the check valve 28 leaves the valve seat 32 by gravity and falls until it is abutted on the stopper 30, and a liquid freely flows in the valve body 24 from the tunnel 34 through the bypass 26. As a result, a suction tube 22 is filled with the liquid to the height of the liquid surface to prevent air from flowing in. Another check valve disc 29 may be installed in the lower half part of the valve body 24 to surely prevent the flow in of air through the suction tube 22 when the dispenser is inverted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manual dispenser for reciprocally moving a piston in a cylinder in association with swinging of a trigger and pushing of a nozzle head to suck up liquid into the cylinder and pressurize and discharge it. -And the upright for that
Inverted dual-use valve.

[0002]

2. Description of the Related Art Due to the environmental problem of depletion of the ozone layer due to CFC gas, a manual dispenser that does not utilize CFC gas and pressurizes and discharges liquid by the reciprocating motion of a piston is drawing attention.

In this type of dispenser, the dispenser body is attached to the mouth of a container containing the liquid to be discharged by, for example, a bottle cap,
The cylinder is molded integrally with the dispenser body, or is molded separately and incorporated into the dispenser body.

When the piston reciprocates in the cylinder and the piston is returned from the pushing position to the initial position,
The cylinder is made negative pressure. Then the primary valve is opened,
The secondary valve is closed. Here, except for the force applied to the piston (for example, the pulling force of the trigger), the piston is also returned to the initial position by the return spring.

The liquid in the container is sucked into the cylinder through the suction tube and the primary valve while removing the residual air in the cylinder by making the cylinder negative pressure. After that, the piston is pushed in to pressurize the liquid in the cylinder,
The pressurized liquid is discharged from the cylinder by opening the secondary valve and flows through the outflow passage. A spinner (vortexing member) is built in the nozzle, and the pressurized liquid is vortexed by the spinner and flows out as an atomizing flow from an orifice (outlet) at the tip of the nozzle.

The liquid is usually discharged as a spray flow, but when a barrier is provided in front of the orifice and the spray flow is collided with the barrier, the liquid is atomized, mixed with the surrounding air, stirred, and foamed. To be done. Alternatively, the spinner may be omitted, and the liquid may be discharged as a jet flow without being vortexed.

This type of manual dispenser is roughly classified into a trigger type and a push type. In the trigger type, the piston reciprocates in association with the swing of the trigger, and in the push type, the nozzle head is used. A piston fixed to the lower end of the nozzle is reciprocated (moved up and down) in conjunction with pushing of the nozzle head.

The suction tube is attached to the lower end of the cylinder and the valve case and extends downward. Then, the opening end (lower end) of the suction tube is located as close as possible to the bottom of the container so that the liquid in the container is sucked up without remaining.

The dispenser is usually used in an upright state, that is, with the bottom of the container in which the dispenser is mounted facing down. In the upright state, the liquid level is naturally on the upper side and the open end of the suction tube is located in the liquid, so that the dispenser can be used without any trouble.

However, sometimes it is necessary to drain the liquid to a position below the height of the container, in which case the bottom of the container is up, that is, inverted (not only in a completely inverted state, but also in a tilted position). A dispenser is used. In the inverted state, since the open end of the suction tube is located above the liquid surface, that is, in the air rather than in the liquid, the liquid cannot be sucked up through the suction tube. That is, in the inverted state, the dispenser does not function normally and cannot be used.

There is known a manual dispenser in which an upright / inverted valve is mounted between a cylinder and a suction tube and can be used in an upright state.
The inverted / combined valve is attached to the manual dispenser so that it can communicate with the cylinder instead of the suction tube. An upright / inverted dual-use valve is constructed by integrally forming a pair of vertically extending branches at the lower end of a cylindrical valve body, and arranging check valves (for example, steel balls) at the two branches, respectively. A suction tube is attached to the end of each branch and extends up or down.

In this known construction, the open end of the upwardly extending suction tube is exposed to the air above the liquid surface in the upright state, but the corresponding check valve is pressed against the valve seat by gravity. Therefore, when the cylinder has a negative pressure, the check valve is further pressed by the valve seat and is not opened, so that the suction valve that extends upward is increased.
The cylinder does not communicate with the cylinder.

On the other hand, the open end of the downwardly extending suction tube is located in the liquid and the corresponding check valve is pressed against the valve seat by gravity. Then, when the cylinder is made under negative pressure, the check valve is separated from the valve seat and opened, and the suction tube extending downward is communicated with the cylinder, so that the liquid passes through this suction tube. It is sucked up by the cylinder.

Also, when inverted, as is easily understood, the check valve on the suction tube side, which originally extends upward, is opened, and the liquid is sucked through the check valve. To be done.

However, in the well-known upright / inverted dual-purpose valve, it is necessary to extend the suction tube vertically, and the structure tends to be complicated.

On the other hand, in the manual type dispenser (push type dispenser) of Japanese Utility Model Laid-Open No. 3-11453 (Kii Sangyo KK), a horizontal hole is formed at the upper end of the suction tube and the ring is moved horizontally. It is configured so as to be slidable on the outer surface of the suction tube above the hole and to have a stopper fixed to the outer surface of the suction tube below the lateral hole.

Dispenser of Japanese Utility Model Publication No. 3-11453
In the case of upright, the ring falls by its own weight to the position where it hits the stopper, covering the lateral hole and closing. On the other hand, when inverted
The lower end of the cylinder functions as a stopper, and the ring falls by its own weight until it abuts the lower end of the cylinder to open the lateral hole.

In this structure, since the lateral hole is closed when the body is upright, the liquid can be sucked up from the opening end (lower end) of the suction tube. Further, when the head is inverted, the lateral hole is opened, so that the liquid flows into the suction tube through the lateral hole, and the suction tube is filled to the same height as the liquid surface. Therefore, even if the opening end of the suction tube is in the air, the air is blocked by the liquid in the suction tube and is not sucked, and only the liquid can flow into the cylinder through the lateral hole.

As described above, in Japanese Utility Model Laid-Open No. 3-11453, an upright / inverted dual-use valve is constructed by simply forming a lateral hole in the suction tube and attaching a ring and a stopper. Does not turn into Also, one suction tube is enough.

[0020]

The construction of Japanese Utility Model Laid-Open No. 3-11453 is theoretically excellent. However, in this structure, a gap that allows the ring to slide is indispensable between the ring and the suction tube, but there is a gap between the ring and the suction tube. , Air enters from this gap through the lateral hole.

Therefore, if the clearance is increased to secure the sliding of the ring, the liquid tightness of the lateral hole cannot be ensured, and conversely, if the clearance is reduced to enhance the liquid tightness, the ring is difficult to slide. , There is a problem in practical use. Of course,
When air flows in through the lateral holes, it becomes difficult to suck the original liquid, or even if it is not difficult to suck the liquid, the sucked liquid will contain air and the amount of outflow (cc / stroke) -K) cannot be obtained.

The present invention is mounted on a manual dispenser, and a single suction tube without sucking air.
The purpose of the present invention is to provide an upright / inverted dual-purpose valve that can control the flow of liquid in both upright and inverted positions under a ridge. Further, the present invention is not limited to 1 without sucking air.
It is an object of the present invention to provide a manual dispenser capable of discharging a liquid under a suction tube of a book both when it is upright and when it is inverted.

[0023]

In order to achieve this object, an upright / inverted dual-purpose valve of a manual dispenser of the present invention is constructed by providing an upwardly extending bypass in an intermediate portion of a valve body, A check valve is located in the bypass. A stopper is provided in the bypass above the valve seat to prevent the check valve from falling off when reversing. Also, the lateral hole is the valve seat,
A bypass is formed between the stoppers. For example, the upper end of the bypass may be an open end, and a slot-shaped notch may be extended downward from the open end to form a lateral hole. The suction tube is also attached to the lower end of the valve body.

[0024]

In this structure, even when the upper end (open end) of the bypass or the lateral hole is located in the air above the liquid surface, the check valve is pressed against the valve seat in the upright state. It does not flow through the valve body. Therefore, when the pressure of the cylinder is made negative, the liquid flows from the lower end of the valve body through the suction tube and is sucked up by the cylinder through the valve body.

On the other hand, when inverted, the suction tube at the lower end of the valve body is inverted and extends upward, and its open end is exposed to the air above the liquid surface. However, by filling the suction tube with liquid, the inflow of air is prevented.

The bypass, which originally extends upward, reverses and extends downward, and the check valve in the bypass separates from the valve seat and descends until it contacts the stopper. When the check valve is separated from the valve seat, the liquid can freely flow from the bypass into the valve body through the lateral hole. Therefore, the liquid freely enters the suction tube through the lateral holes, fills the suction tube up to the level of the liquid surface, and prevents the inflow of air through the suction tube. When the cylinder is under negative pressure, liquid flows into the valve body via the bypass,
It is sucked up by the cylinder through the valve body.

Another check valve may be arranged in the lower half of the valve body, and a valve seat to which the check valve is closely attached at the time of reversal may be provided in the intermediate portion of the valve body. With this configuration, it is possible to reliably prevent the inflow of air through the suction tube at the time of reversal.

[0028]

Embodiments of the present invention will now be described in detail with reference to the drawings.

As shown in FIG. 1, the manual dispenser 10 according to the present invention is detachably attached to a container 14 by screwing a bottle cap 12 to a container mouth portion 13, for example. In the embodiment, the dispenser 10 is a trigger-
Although it is configured as a trigger type that reciprocates the piston 111 in the cylinder 113 in conjunction with the swing of 16, the nozzle head is pushed downward and the piston fixed to the lower end of the nozzle head reciprocates vertically in the cylinder. It may be a push type that moves (elevates).

Trigger type manual dispenser-10
Since the basic configuration of the above is well known and is not the gist of the present invention, detailed description thereof will be omitted.

In a known dispenser designed for use in an upright state, a suction tube is directly attached to a valve case, for example. On the other hand, in the present invention, the upright / inverted valve 20 is attached to the valve case 115 to which the suction tube is to be attached, and the suction tube 22 is attached to the lower end of the upright / inverted valve. Installed. In other words, suction tu
The valve 22 is connected to the valve cable via the upright / inverted valve 20.
It is attached to the space 115.

As can be seen clearly from FIG. 2 in addition to FIG. 1, an upright / inverted dual-purpose valve 20 includes a valve body 24 having its upper end attached to a valve case, and a bypass 26 integrally formed with the valve body. Formed of plastic with and the bypass extending upwardly in communication with an intermediate portion of the valve body. Of course, the bypass 26 may be incorporated into the valve body 24 by fitting or the like without being integrally molded, but it is preferable to integrally form the bypass 26.

A check valve 28 is arranged in the bypass 26, and in the embodiment, the upper end 26U of the bypass is opened, and the check valve is inserted from this open end. And check valve 28 when reversing
A stopper 30 is formed near the opening end (upper end) 26U to prevent the falling of the stopper. For example, a ring-shaped projection provided on the inner wall serves as the stopper 30. Stopper 30 is a check valve when inverted
It suffices to prevent 28 from falling off, and is not limited to the ring-shaped protrusion. It should be noted that a valve seat 32 is naturally formed in the bypass 26.

Further, a lateral hole 34 is formed in the bypass 26 between the lower valve seat 32 and the upper stopper 30, and in the embodiment, the lateral hole is formed by three notch-like notches extending downward from the opening end 26U. Are formed. Alternatively, the opening end 26U of the bypass may be closed and the check valve 28 may be inserted into the bypass 26 by utilizing the lateral hole 34.

Further, another check valve may be arranged in the lower half portion of the valve body, and a valve seat to which the check valve is closely attached may be provided in the middle portion of the valve body when the valve body is upside down. A check valve 29 is built in the lower half of the valve body 24 of the inverted / inverted valve 20, and a downward valve seat 33 is formed in the middle of the valve body. Then, the cap 35 for preventing the check valve 29 from coming off.
Is fixed to the lower end of the valve body 24, and the suction tube
22 is attached to this cap.

In the dispenser 10 having the above-mentioned structure, the check valve 28 of the bypass 26 is in the upright position shown in FIG.
The air above the liquid surface 36 is closed by being pressed by the check valve.
It does not flow through 28. Further, since the check valve 29 is separated from the valve seat 33 at the intermediate portion of the valve body, pressurization and outflow of liquid can be performed without any trouble.

That is, in the upright state, the nozzle cover 14
0 is oscillated clockwise as shown by the arrow to open the orifice 141 and then the trigger 16 is pulled. After that, when the pulling force is removed, the return spring 142 returns the trigger 16 to the initial position and the cylinder 113 is made negative pressure, and the liquid is blocked from the lower end of the suction tube 22 by the check valve 29. Instead, it flows through the valve body 24 from the bottom to the top, and is sucked into the cylinder 113 through the primary valve 144. When the trigger 16 is pulled again, the liquid in the cylinder 113 is pressurized, the secondary valve 146 is opened, the spinner 148 vortexes the liquid, and the liquid is discharged from the orifice 141 as a spray flow.

When the dispenser 10 is turned upside down together with the container 14, the opening end of the suction tube 22 is located above the liquid surface 36, as shown in FIG. However, the check valve 28 is separated from the valve seat 32 by its own weight and falls until it comes into contact with the stopper 30, and the lateral hole 34 communicates with the central portion of the valve body 24. Further, since the check valve 29 is pressed against the valve seat 33 by its own weight and is closed, the air on the liquid surface 36 is sucked by the suction tube.
It does not flow into the valve body 24 through the bush 22. Then, the liquid flows into the bypass 26 from the lateral hole 34 and fills the valve body 24 below the check valve 29.

Since the check valve 29 is provided in the embodiment, the check valve can surely prevent the inflow (mixture) of the air when inverted. However, the check valve 29 need not always be provided. That is, if the check valve 29 is not provided, the liquid flowing into the bypass 26 from the lateral hole 34 is filled not only in the valve body 24 but also in the suction tube 22 up to the height of the liquid surface. When the suction tube 22 is filled with the liquid, even if the end of the suction tube is exposed to the air, entrainment of air in the valve body 24 is prevented by the liquid in the suction tube. In other words, the liquid that fills the suction tube 22 at the time of inversion prevents the entry of air, so the check valve can be omitted.

When the cylinder is negatively pressured when inverted, as shown by the arrow, the liquid flows into the bypass 26 through the lateral hole 34, is sucked up by the cylinder through the valve body 24, and is not mixed with normal air. A spill is made.

When the liquid flows into the bypass 26 from the lateral hole 34, a suction force for lifting the check valve 28 is generated. However, by increasing the opening area of the lateral hole 34 to disperse the suction force, by separating the lateral hole from the stopper 30 sufficiently to reduce the influence of the suction force, or by increasing the self-weight of the check valve 28, It is technically easy to solve and the check valve is not closed by suction.

As described above, the check valve 28 is built in the bypass 26, and the lateral hole 34 is formed in the bypass so that the check valve 28 is upright.
The inverted dual-purpose valve 20 is configured and does not complicate the configuration. Therefore, the valve 20 can be manufactured at low cost. Further, since the bypass 26 also has the function of a suction tube, it is not necessary to use two suction tubes as in the conventional case, and one suction tube 22 is provided at the lower end of the valve body 24.
You just need to install it.

Although there is a gap between the check valve and the inner wall of the bypass 26 in order to ensure the movement of the check valve 28, this gap is liquid tight regardless of the liquid tightness of the check valve. Does not lower. Therefore, the ring is used as a check valve for the suction tube.
Unlike the known structure mounted on the outer surface of the valve, the check valve is liquid-tight even when it is upright, and air can be prevented from entering. In this way, the upright / inverted dual-purpose valve 20 can accurately control the flow of the liquid in the upright and inverted states without impairing the liquid tightness.

By attaching the upper end of the valve body 24 to the valve casing 115, the dispenser 10 which is supposed to be used in the upright state is changed to a dispenser for both upright and upside down which can be used even when it is upside down. To be In other words, just by adding the upright / inverted combined valve 20, the ordinary manual dispenser is transformed into the upright / inverted combined dispenser 10. Of course, the liquid flow is controlled in the upright and inverted positions without impairing the liquid tightness, and one suction tube is sufficient.

In the embodiment, the check valve 28 has a stepped shape made of plastic, and the upper half portion of the small diameter has a fall prevention brace.
However, the shape and material of the check valve are not limited to this. Further, if the lateral hole 34 is a slot-shaped notch extending from the opening end as in the embodiment, sufficient elasticity is obtained at the opening end, and the check valve 28 is easily inserted into the bypass 26,
Can be placed. However, the shape, number, arrangement, etc. of the lateral holes 34 are not limited to this.

In the embodiment, a separate suction tube 22
Is attached to the lower end of the valve body 24.
The lower half of the valve body may be sufficiently extended so that the lower half of the valve body functions as a suction tube. Also,
The description has been made assuming that the upright / inverted valve 20 is attached to the valve case. For example, as shown in FIG. 1 of Japanese Patent Publication No. 6-85897 and FIG. 2 of Japanese Utility Model Laid-Open No. 3-11453. It may be attached to the lower end of the cylinder.

For example, as shown in FIG. 4, the lateral holes may be circular holes 134 instead of elongated holes. The check valves 28, 29 are usually made of plastic, but may be steel balls. However, if the check valves 28 and 29 are made of plastic without using steel balls, the valve 20 for both upright and inverted, and by extension, upright and
The inverted dispenser-10 can be made entirely of plastic,
It can be regenerated by melting.

Further, as shown in FIG. 4 (B), if the check valve 29 is prevented from falling off with the suction tube 22, the cap 35 is removed.
Can be omitted.

Known dispensers, for example, fairness
In the dispenser of Japanese Patent No. 57-32626, the packing is pressed by a rod integrally formed with the trigger to deform the packing to introduce air into the container to prevent the generation of negative pressure in the container. Here, the packing is made of plastic, and when the rod is no longer pressed, the packing returns to its original shape due to its elasticity and adheres closely to the wall of the bottle case. Here, when the pressing by the rod disappears, the packing returns to the original shape almost immediately. However, if deformation and restoration are repeated, the elasticity of the packing decreases and a time delay occurs,
It tends to grow gradually. If there is a time delay in returning the packing to the original shape, liquid tightness cannot be obtained, and liquid leaks from the gap between the wall of the packing and the bottle case (liquid leak occurs).

When the dispenser is used only when the dispenser is upright, such a time delay does not cause any problem. However, when trying to use the dispenser upside down, the packing is soaked with the liquid, so if there is a time delay in returning the packing to the original shape and liquid tightness is lacked, liquid leakage will inevitably occur. . Therefore, the conventional negative pressure prevention mechanism in which the rod and the packing are combined cannot be adopted in the upright / inverted dispenser.

The dispenser 10 of the embodiment is equipped with a negative pressure prevention mechanism which can surely prevent liquid leakage when inverted. That is, as can be seen clearly from FIG. 1, the negative pressure prevention mechanism 41 of the embodiment comprises a valve body 43 and a negative pressure prevention valve 47 integrally formed with a valve spring 45 from plastic, and the valve spring is a bamboo spring. ing. The valve seat 43a is the valve case 11
It is provided in 5. Here, the valve case 115 is formed by combining an upper half part 115U corresponding to a conventional valve case and a lower half part 115L fitted in the upper half part, and the valve seat 43a is formed in the lower half of the valve case. A ventilation hole 47 is formed in the upper half of the wall downwardly.

By fitting the cap 116 to the lower end (opening end) of the lower half 115L of the valve case, the negative pressure prevention valve 41
Is arranged in the valve case below the valve seat 43a. Although not shown, for example, if a recess is formed on the upper surface of the cap 116 and this recess is used as a spring seat, the negative pressure prevention valve 41 can be accurately positioned.

In this structure, when the liquid is sucked into the cylinder and the liquid level is lowered and the inside of the container is about to become a negative pressure, the air resists the biasing force of the valve spring 45 and causes the valve body 43 to move to the valve seat 43a.
Since the negative pressure prevention valve 41 is opened by separating from, and flows into the container 14 from the ventilation hole 47 through the negative pressure prevention valve 41, negative pressure in the container is prevented.

The biasing force of the valve spring 45 is so large that it cannot be compared with the elasticity of the packing. That is, the reactivity of the valve spring 45 is sharp, while the reactivity of the packing is slow. Therefore, when the inflow of air ends, the valve body 43
The biasing force of 45 instantly presses and makes close contact with the valve seat 43a. Therefore, if this negative pressure prevention valve 41 is mounted, there is no room for liquid leakage when inverted, and the dispenser 10 can be used without causing liquid leakage not only when standing upright but also when standing upside down.

In the embodiment, since the valve body 43 and the valve spring 45 are integrally molded, positioning and assembly can be easily performed. Further, since the valve spring 45 is a bamboo spring, it is possible to obtain the negative pressure prevention valve 41 that is easy to mold and has a large biasing force.

The above-mentioned embodiments are intended to explain the present invention, and are not intended to limit the present invention in any way, and all modifications and alterations made within the technical scope of the present invention are also included in the present invention. It goes without saying that it will be done.

[0057]

As described above, according to the valve for the upright / inverted type of the manual dispenser of the present invention, the liquid flow at the upright time and the inverted time can be controlled without impairing the liquid tightness, and the suction tube can be controlled. -One buff is enough.

Further, an upright / inverted dual-purpose valve can be used even when the normal manual dispenser intended for use in the upright state can be used even when the upright / inverted dual valve is attached to, for example, a valve case or a cylinder. It can be changed to a manual dispenser.

The upright / inverted dual valve has a simple structure by providing a bypass in the middle of the valve body, for example, forming a stopper and a lateral hole in the bypass and incorporating a check valve in the bypass. Therefore, the molding is easy and the manufacturing cost is low.

If another check valve is built in the lower half of the valve body, and this check valve is pressed against the valve seat by its own weight when inverted,
Air is surely prevented from flowing into the valve body via the suction tube when it is inverted.

In a manual dispenser equipped with such an upright / inverted valve, the liquid dispenser is not impaired when it is upright as well as when it is upright under a single sanction tube. Can also drain liquid.

Further, if a negative pressure prevention valve in which a valve body and a bamboo spring (valve spring) are integrally molded from a plastic is mounted,
Even when inverted, liquid can flow out without causing liquid leakage.

[Brief description of drawings]

FIG. 1 is a schematic front view of a manual trigger-type dispenser according to an embodiment of the present invention when it is upright.

FIG. 2 is a perspective view of an upright / inverted combined valve mounted on the dispenser of FIG.

FIG. 3 is a schematic front view of the manual trigger-type dispenser shown in FIG. 1 when inverted.

4A and 4B are a perspective view and a schematic vertical sectional view of an upright / inverted combined valve according to another embodiment.

[Explanation of symbols]

 10 Manual dispenser 12 Bottle cap 13 Container opening 14 Container 16 Trigger 20 Upright / inverted valve 22 Suction tube 24 Valve body 26 Bypass 28, 29 Check valve 30 Stopper 32, 33 Valve seat 34, 134 Lateral hole 41 Negative pressure prevention mechanism 43 Valve body 43a Valve seat 45 Valve spring (bamboo spring) 47 Ventilation hole 115 Housing

Claims (6)

[Claims] 1. A liquid in a container is transferred to a cylinder through a suction tube by reciprocating movement of a piston which is attached to a mouth of a container containing a liquid and which is interlocked with rocking of a trigger and pushing of a nozzle head. In an upright / inverted dual-purpose valve for a manual dispenser that sucks up, pressurizes and discharges, the upper end of the valve body can be attached to the manual dispenser so that it can communicate with the cylinder, and in the middle of the valve body, A bypass with a check valve extending upward is formed, and the bypass has a stopper above the valve seat that prevents the check valve from falling off during reversing, and a lateral hole is formed in the bypass between the valve seat and the stopper. An upright / inverted valve for a manual dispenser that is characterized in that 2. A manual dispenser that sucks up liquid in a container to a cylinder through a suction tube by reciprocating motion of a piston, pressurizes and discharges the liquid, and is mounted on the manual dispenser so as to be able to communicate with the cylinder. Upright
This is an inverted dual-purpose valve.The bypass valve with check valve that extends upward is integrally molded in the middle of the valve body.The upper end of the bypass is opened, and the check valve does not drop off when reversing. An upright / inverted valve for a manual dispenser that has a stopper to prevent it and has a lateral hole formed in a bypass between the valve seat and the stopper. 3. The upright / inverted valve for a manual dispenser according to claim 1 or 2, wherein the lateral hole comprises a slotted notch extending downward from the opening end of the bypass. 4. The check valve according to claim 1, wherein another check valve is built in the lower half portion of the valve body, and the valve body is provided with a downward valve seat against which the check valve is pressed when inverted. Upright / inverted valve of the manual dispenser described above. 5. The liquid in the container is transferred to the cylinder through the suction tube by the reciprocating motion of the piston which is attached to the mouth of the container containing the liquid and which is interlocked with the swing of the trigger and the pushing of the nozzle head. In a manual dispenser that sucks up, pressurizes, and discharges, an upright / inverted valve with a bypass with a check valve that extends upward is installed instead of the suction tube so that its upper end can communicate with the cylinder. The bypass has a stopper above the valve seat to prevent the check valve from falling off when reversing, a lateral hole is formed in the bypass between the valve seat and the stopper, and the suction tube is the lower end of the upright / inverted dual-use valve. Manual dispenser characterized by being attached to. 6. The liquid in the container is transferred to the cylinder through the suction tube by the reciprocating motion of a piston which is attached to the mouth of the container containing the liquid and which is interlocked with the swing of the trigger and the pushing of the nozzle head. In a manual dispenser that sucks up, pressurizes, and discharges, an upright / inverted valve with a bypass with a check valve that extends upward is installed instead of the suction tube so that its upper end can communicate with the cylinder. , The bypass has a stopper above the valve seat to prevent the check valve from falling off when reversing, a lateral hole is formed in the bypass between the valve seat and the stopper, and another check valve is provided in the lower half of the valve body. The valve body has a built-in valve seat that is pressed downward by the check valve when it is inverted, and the suction tube is attached to the lower end of the valve for both upright and inverted, and is integrally molded from plastic with the valve body. Vacuum prevention valve, Barubuke to the volute springs and valve spring - Manual dispenser disposed on the scan -.