JP2000237644A - Accumulator liquid ejecting container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the appearance of a container from being impaired by covering the outer face of a small dia. cylinder of an upright accumulator pump with a covering cylinder and forming a gap between the inner face of the covering cylinder and the outer face of the small dia. cylinder into an airtight space and further, opening a residual pressure discharge hole in the airtight space. SOLUTION: The upright accumulator pump 11 comprises a large dia. cylinder 13 with a push-down head 12 and a small dia. cylinder 15 having a first outwardly directed flange 14 formed on the upper end. In addition, both upper and lower parts of a tubular plunger 16 are fitted into both cylinders 13, 15. Further, the hydraulic regeneration pump 11 is fitted into the top part of a container using a fitting member 17 and the outer face of the small dia. cylinder 15 of the accumulator pump 11 is wrapped with a covering cylinder 35. Besides an airtight space 36 is formed between the inner face of the covering cylinder 35 and the outer face of the small dia. cylinder 15, and a residual pressure discharge hole 21 of the small dia. cylinder 15 is opened into the airtight space 36. Thus numerous bubbles are generated in the container to prevent the appearance of the container from being impaired.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure accumulating type liquid ejection container.

[0002]

2. Description of the Related Art As shown in FIG. 4, a large-diameter cylinder 13 with a press-down head 12, a small-diameter cylinder 15 with a first outward flange 14, and upper and lower parts are fitted into these two cylinders. A vertical accumulator pump 11 is formed with the tubular plunger 16, the pump is placed above the container body 1, and the small-diameter cylinder is hung down into the upper part of the container body to form a first outward flange 14.
Is held between the upper end surface of the container body and the neck by the flange-shaped top plate at the upper end of the peripheral wall 18 of the attachment member 17 screwed to the outer surface of the container body and the neck, and the engagement cylinder rising from the inner periphery of the top plate A pressure accumulating type liquid ejection container in which the above-mentioned large-diameter cylinder is fitted and mounted so as to be vertically movable and non-extractable is widely used in general.

Further, a pump is provided on the upper part of the container body, and the liquid in the container body is ejected by the operation of the pump. When the liquid in the container body is reduced by the ejection of the liquid, the inside of the container body becomes negative pressure due to the decrease and enters the lower part of the container body. Containers provided so that the slidably fitted bottom wall 4 is lifted to eliminate the negative pressure state are also widely known.

[0004]

The container having the above-described vertical type pressure accumulating pump is provided with a large-diameter cylinder via a pressing head 12.
When the cylinder 13 and the tubular plunger 16 are pushed down against the small-diameter cylinder 15 having a suction valve at the bottom against the urging, only the tubular plunger 16 is formed due to the difference in diameter between the two cylinders, that is, the difference in the area between the upper and lower ends of the tubular plunger. The valve body 13a rising from the upper surface of the tubular plunger opens a valve hole 13b formed in the top plate of the large-diameter cylinder, and the liquid in both cylinders and the tubular plunger is pushed. The large-diameter cylinder 13 with the press-down head and the tubular plunger 16 descend while ejecting from the nozzle 12a of the lowering head 12, and the lower end of the tubular plunger 16 is placed on the lower inner surface of the small-diameter cylinder. When located inward of the seal releasing means formed by a peripheral groove or the like, it passes through the releasing means 22 and the space between the tubular plunger 16 and the small diameter cylinder 15 and passes through the lower part of the small diameter cylinder. The high-pressure liquid is discharged into the container through a residual pressure discharge hole 21 formed in the middle portion of the small-diameter cylinder, and the high-pressure state of the liquid in the small-diameter cylinder 15, the large-diameter cylinder 13, and the tubular plunger 16 is eliminated. 16 rises, the discharge valve formed by the valve element and the valve hole is closed, and when the press-down head is released in this state, the large-diameter cylinder 13 with the press-down head and the tubular plunger 16
Rises with respect to the small-diameter cylinder 15, and due to the negative pressure in the small-diameter cylinder 15 caused by the rise, the suction valve 15 a at the bottom of the small-diameter cylinder
Is opened to suck the liquid in the container into the small-diameter cylinder.

[0005] Normally, a suction pipe is suspended from the lower end of the small-diameter cylinder to the suction valve hole and hangs down to the bottom of the container body.
The above-mentioned residual pressure discharge hole is provided above the level of the liquid stored in the container.
Since the position 21 is located, the residual pressure liquid discharged from the discharge hole is discharged into the space above the liquid level, but the bottom wall of the container body can be slid so that the bottom wall rises due to negative pressure in the container body. In such a case, if a space is formed above the liquid level, the negative pressure in the container body due to the decrease in the liquid will be incomplete, and in some cases, the air in the space will be sucked into the pump,
Without leaving such a space, the inside of the container is filled with liquid up to its upper end.

Accordingly, the residual pressure discharge hole 21 is located in the liquid, and the residual pressure water released from the discharge hole is discharged into the liquid in the container.

When the container is used for the first time, the liquid has not yet been sucked into the small-diameter cylinder 15 or the like. Therefore, when the pump is operated for the first time, the air in the pump is compressed and the high-pressure air is compressed. The high-pressure air is discharged from the nozzles 12a and also from the residual pressure discharge holes 21. The air in the pump is gradually replaced with the liquid in the container by repeating the operation, but the liquid containing air is continuously released until the replacement is completed. As described above, when the residual pressure discharge hole 21 is located in the water, the air discharged from the residual pressure discharge hole into the water becomes bubbles, and particularly when the liquid in the container is viscous, the bubbles do not disappear. If the container remains transparent and translucent or translucent, the bubbles impair the appearance of the container.

The present invention is provided so that the appearance of the container is not impaired by such bubbles.

[0009]

As a first means, a large-diameter cylinder 13 having a pressing head and a first outward flange 14 are provided.
The vertical accumulator pump 11 formed of a small-diameter cylinder 15 having an upper end and a tubular plunger 16 having upper and lower portions fitted into both cylinders is transparent or translucent, and the bottom plate is slid on the bottom wall. The first outward flange 14 on the upper end of the small-diameter cylinder 15 suspended into the upper part of the container body is attached to the upper part of the container body 1 formed by the mounting member 17 having the peripheral wall 18 screwed to the outer surface of the mouth and neck of the container body. While being held between the mouth and neck upper end surface and the inward flange-like top plate 19 at the upper end of the peripheral wall 18, the large-diameter cylinder 13 can be moved up and down into the engagement cylinder 20 raised from the inner periphery of the top plate 19,
The small-diameter cylinder 15 is provided with a residual pressure discharge hole 21 in the middle thereof, and a seal releasing means 22 is provided on the lower inner surface of the small-diameter cylinder to form a tubular plunger. (16) When the outer periphery of the lower end is located inside the seal releasing means, the high-pressure fluid remaining in the lower portion of the small-diameter cylinder is ejected into the container from the residual-pressure discharge hole 21 through the space between the tubular plunger and the small-diameter cylinder. In the pressure accumulating type liquid ejection container, the outer surface of the small-diameter cylinder 15 is covered with a covering cylinder 35, the upper and lower ends are in airtight contact with the outer surface of the small-diameter cylinder, and the middle part is covered with a gap therebetween. A gap between the outer surface of the small-diameter cylinder and the inner surface of the closed cylinder was formed in the hermetic space 36, and the residual pressure discharge hole 21 was opened in the hermetic space.

As a second means, the covering cylinder 35 having the first means is made of a synthetic resin material having elasticity.
Large diameter cylinder from upper end of small diameter cylinder 31 through outward flanged wall 32
The small-diameter cylinder 31 is airtightly fitted to the lower outer surface of the small-diameter cylinder 15 and the inner diameter of the large-diameter cylinder is reduced to the outside of the small-diameter cylinder. An airtight space 36 is formed between the inner surface of the large-diameter cylinder and the outer surface of the small-diameter cylinder, and the second outward flange 34 is brought into contact with the lower surface of the first outward flange 14 of the small-diameter cylinder so that the second The outer periphery of the outward flange 34 was airtightly sandwiched between the first outward flange 14 and the upper end surface of the mouth and neck of the container body.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an embodiment shown in FIGS. 1 and 2 will be described. First, a conventionally known portion will be described. Reference numeral 1 denotes a transparent or translucent container body which stands up from the upper end of a body portion 2 through a shoulder portion, and a mouth or neck portion 3. The sliding bottom wall is provided to eliminate the negative pressure state. The bottom wall is formed in a concave shape at the center of the upper surface of the bottom wall so as to fit a small-diameter cylinder described later and a lower portion of a covering cylinder fitted to the outer surface of the small-diameter cylinder. A protective cylinder 6 with an air hole 5 is provided at the lower end of the body.
Are fitted.

Reference numeral 11 denotes a large-diameter cylinder with a pressing head 12.
13, a small-diameter cylinder 15 having a first outward flange 14 at the upper end, and a tubular plunger 16 having upper and lower portions fitted into both cylinders, and the vertical pressure accumulator pump comprises: The peripheral wall 18 of the mounting member 17 is attached to the container body mouth neck 3
Flange top plate 19 screwed to the outer surface and at the upper end of peripheral wall 18
Then, the first outward flange 14 of the small-diameter cylinder is held between the upper end surface of the mouth and neck portion 3. The small-diameter cylinder 15 is suspended in the upper part of the container body. In the illustrated example, the first outward flange is used.
A second outward flange of a wrapping cylinder to be described later is interposed between 14 and the upper end surface of the mouth and neck portion. The wrapping cylinder is a member forming the present invention, and will be described later. Also the top plate
From the inner circumference of 19, the engaging cylinder 20 is erected, and the large-diameter cylinder 13 is vertically movably fitted into the engaging cylinder so that it cannot be pulled out.
The pressure accumulating pump 11 is mounted on the upper part of the container body by the mounting member 17. The small-diameter cylinder 15 has a residual pressure discharge hole
21 having a concave groove on the lower inner surface of the small-diameter cylinder to form seal releasing means 22, and when the outer periphery of the lower end of the plunger enters the concave groove by lowering the tubular plunger 16,
The high-pressure air or liquid in the lower portion of the small-diameter cylinder below the plunger passes through the space between the tubular plunger and the small-diameter cylinder and is discharged from the residual pressure discharge hole 21.

The above is the same in structure and operation as in the case described with reference to FIG. 4, so that the description of the operation will be omitted.

In the above construction, according to the present invention, as shown in the drawing, the large-diameter cylinder 33 stands upright from the upper end of the small-diameter cylinder 31 via the outward flange-shaped wall 32, and the second outward direction from the upper end of the large-diameter cylinder. A covering cylinder 35 is provided to project the flange 34, and the small-diameter cylinder 31 of the covering cylinder is airtightly fitted to the lower outer surface of the small-diameter cylinder 15, and the second outward flange 34 is connected to the upper end surface of the container body mouth and neck. And between the first outward flange 14 of the small-diameter cylinder,
The first and second outward flanges 14 and 34 were sandwiched between the upper end face of the mouth and neck and the top plate 19 of the mounting member 17. The large-diameter cylinder 33 has a larger inner diameter than the small-diameter cylinder outer diameter to provide a gap between them, and the second outward flange 34 is the first outward flange 14.
It is in contact with the lower surface. Accordingly, the gap forms an airtight space 36, and the above-described residual pressure discharge hole 21 is opened into the airtight space.

FIG. 3 shows another embodiment of the covering cylinder 35. In this case, a flange-like wall facing outward from the upper end of the small-diameter cylinder 31 is shown.
Large-diameter cylinder 33 standing up through 32 Upper end of small-diameter tapered section
At 37, the inner surface of the upper end of the tapered portion is fitted airtightly to the upper outer surface of the small-diameter cylinder. Also in this case, an airtight space 36 is formed between the outer surface of the small-diameter cylinder and the inner surface of the large-diameter cylinder 33, and the residual pressure discharge hole 21 is opened in the airtight space.

The covering cylinder 35 may be formed of an elastic synthetic resin material, or may have an opaque color.

[0017]

According to the present invention, the vertical pressure accumulating pump mounted on the upper portion of the container body by the mounting member 17 has the above-described structure.
The outer surface of the small-diameter cylinder 15 is covered with a covering cylinder 35, an airtight space 36 is formed between the inner surface of the covering cylinder and the outer surface of the small-diameter cylinder, and a residual pressure discharge hole of the small-diameter cylinder 15 is provided in the airtight space.
Since the hole 21 is opened, even if the air in the pump is discharged from the residual pressure discharge hole into the hermetic space 36 by the initial pump operation described above, the liquid has not yet entered the hermetic space. Even if air and liquid both enter the hermetic space through the residual pressure discharge hole by gradually replacing the air in the pump with liquid, the hermetic space is sealed. Therefore, the pressure in the hermetic space is increased by the air and the liquid, so that foaming can be prevented. Even if foaming occurs, the bubble diameter is reduced by the high pressure. In addition, as for the air remaining in the airtight space 36, only the liquid is discharged into the airtight space as the air in the pump is discharged from the nozzle together with the liquid, and the liquid causes the air in the airtight space to flow back into the pump, and together with the liquid, Since the air is ejected from the nozzle, the air in the airtight space is reduced, and the fine bubbles can be hardly generated.

In this manner, the air discharged from the residual pressure discharge hole 21 of the small-diameter cylinder 15 of the vertical type pressure accumulating pump can be prevented from foaming in the container body. Since it can be miniaturized, a large number of bubbles are not generated in the container body as in the related art, and the appearance of the container is not impaired.

In the case of claim 2, a large-diameter cylinder 33 whose inner diameter is larger than the outer diameter of the small-diameter cylinder is erected from the upper end of the small-diameter cylinder via an outward flange-like wall from the upper end of the small-diameter cylinder. Second
Since the outward flange 34 was applied to the lower surface of the first outward flange 14 of the small-diameter cylinder, and the outer periphery of the second outward flange was sandwiched between the first outward flange 14 and the upper end surface of the container body neck, Further, since the covering cylinder 35 is formed of an elastic synthetic resin material, it is easy to fit the covering cylinder airtightly to the outer surface of the small-diameter cylinder.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of the container of the present invention.

FIG. 2 is a longitudinal sectional view showing a state in which a large-diameter cylinder and a tubular plunger are pushed down through a pushing head.

FIG. 3 is a longitudinal sectional view of a container shown in another embodiment.

FIG. 4 is a longitudinal sectional view of a conventional container.

[Explanation of symbols]

 11… Vertical accumulator pump 13… Large-diameter cylinder 15… Small-diameter cylinder 16… Tube plunger 17… Mounting member 21… Residual pressure discharge hole 22… Seal release means 35… Coated cylinder 36… Airtight space

Claims (2)

[Claims] 1. A large-diameter cylinder 13 having a pressing head,
Small-diameter cylinder 15 having first outward flange 14 at the upper end
And a tubular accumulator pump 11 formed of a tubular plunger 16 having upper and lower portions fitted into both cylinders, and a container 1 having a transparent or translucent bottom plate formed of a sliding bottom wall 4. The first outward flange 14 at the upper end of the small-diameter cylinder 15 suspended into the upper part of the container body is attached to the upper end of the container body by the attachment member 17 in which the peripheral wall 18 is screwed to the outer surface of the mouth and neck part of the container body. The upper end of the peripheral wall 18 is sandwiched between an inward flange-like top plate 19 and the top plate.
The large-diameter cylinder 13 is mounted by being fitted into the engagement cylinder 20 raised from the inner circumference so as to be able to move up and down and not to be pulled out, and a residual pressure discharge hole 21 is provided at an intermediate portion of the small-diameter cylinder 15. And a seal releasing means 22 is provided on the lower inner surface of the small diameter cylinder, and when the outer periphery of the lower end of the tubular plunger 16 is located inside the seal releasing means, the high-pressure fluid remaining in the lower part of the small diameter cylinder removes the tubular plunger. And a small-diameter cylinder, a pressure-accumulation-type liquid ejection container provided so as to be ejected from the residual pressure discharge hole 21 into the container body, wherein the outer surface of the small-diameter cylinder 15 is a closed cylinder 35, and the upper and lower ends are small-diameter. The gap between the outer surface of the small-diameter cylinder and the inner surface of the closed cylinder is formed in an airtight space 36 by airtightly contacting the outer surface of the cylinder and the intermediate portion with a gap therebetween. It is characterized by having a hole in the airtight space Accumulator fluid ejection container for. 2. A large-diameter cylinder 33 is erected from an upper end of a small-diameter cylinder 31 through an outward flange-like wall 32 by a synthetic resin material having elasticity. The small-diameter cylinder 31 is airtightly fitted to the lower outer surface of the small-diameter cylinder 15 and the inner diameter of the large-diameter cylinder is larger than the outer diameter of the small-diameter cylinder. The second outward flange 34 is brought into contact with the lower surface of the first outward flange 14 of the small-diameter cylinder, and the outer periphery of the second outward flange 34 is formed with the first outward flange 14 and the container. 2. The pressure accumulating type liquid ejection container according to claim 1, wherein the container is air-tightly held between an upper end surface of the body, mouth and neck.