JP2003033686A - Accumulator spray vessel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a accumulator spray vessel free from liquid drop in start-up and the end of spray and capable of being miniaturized. SOLUTION: An operation member 31 erected from the inside of a cylinder 21 hanging in a vessel body by being pressed upward is formed from a topped cylindrical body 35 having a cylindrical piston 34 at the lower end of the peripheral wall 33, a liquid flow-out cylinder 37 erected around a discharge valve hole 36 perforated in the center part of a cylindrical top plate and a head 39 with a nozzle, which is engaged with the upper end of the cylinder. A bottomed small diameter cylinder 42 having an opened upper surface is fitted into the topped cylindrical body 35, the discharge valve hole 36 is blocked with a discharge valve body 44 pressed upward to the inside of the cylinder and water tightly engaged and a flow passage 46 for connecting the inside of the cylinder, the discharge valve hole 36 and the upper end opened surface of the small diameter cylinder to each other is perforated and formed between the topped cylindrical body inside surface and the small diameter cylinder outside surface.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art A cylinder having a suction valve on the inner surface of the bottom is hung in a container body, and an actuating member is erected by urging upward from the inside of the cylinder, and a head with a nozzle fitted to the upper end of the actuating member is moved up and down. A liquid ejection container is widely used in which the liquid in the container is moved into the cylinder by moving the liquid and the liquid in the cylinder is ejected from the nozzle.

Since the liquid ejector is provided so as to eject the liquid immediately by the high pressure in the cylinder, when the liquid is ejected or when the liquid ejection is stopped, the liquid may be dripped due to insufficient liquid ejection pressure. When the internal pressure reaches a reference distance where the flight distance is appropriate to eliminate the defect, the discharge valve, which was blocked by the bias, opens, and when the liquid in the cylinder drops below the reference internal pressure, the discharge valve closes immediately. Accumulation type liquid ejecting container (Sho 54-39693
No.) was developed.

The pressure accumulating liquid jetting container is provided with a cylinder having a small diameter and a cylinder having a large diameter in the container system and the working member side, respectively.
If the slider tube is fitted by urging the cylinders upward between them and the operating member is pushed down from the state where liquid flows into both cylinders and the slider tube, the pressure difference will cause a difference in diameter between the cylinders. When the slider tube descends against the bias, the discharge valve element provided on the slider tube also descends to open the discharge valve, and liquid is ejected through the discharge valve. When the liquid pressure in the cylinder and the slider tube is lowered, the slider tube is automatically raised to close the discharge valve.

[0005]

The above-mentioned pressure accumulating type liquid ejection container is provided with a slider tube with a discharge valve body, and a small diameter cylinder provided on the container body side and a large diameter cylinder provided on the operating member side are vertically arranged. Since both ends are fitted together, the whole size becomes large.

The present invention is a pressure-accumulation type, and is provided so as to be miniaturized.

[0007]

As a first means, an operating member having a cylindrical piston on the lower outer surface is urged upward from the inside of a cylinder having a suction valve on the inner surface of the bottom, which is suspended from the inside of the container. A liquid ejecting container in which the liquid in the container can be ejected into the cylinder and the liquid in the cylinder can be ejected from the nozzle by vertically moving a head with a nozzle fitted to the upper end of the operating member, 31
A peripheral wall 33 is hung from the outer periphery of the top plate 32, and a discharge valve hole 36 is formed at the center of the top plate 32 of a toped cylinder body 35 provided with a cylindrical piston 34 at the lower end of the peripheral wall. A liquid outflow tube 37 is erected so as to surround the hole 36, and a head 39 is fitted to the upper end of the liquid outflow tube, and a small diameter cylinder 42 having an upper surface opening and a bottom is fitted in the top cylinder 35. The discharge valve hole 36
Is closed by a discharge valve body 44 that is urged upward into a small diameter cylinder and vertically movable and fitted in a watertight manner.
A flow path that connects the inside of the cylinder 21, the discharge valve hole 36, and the upper end opening surface of the small diameter cylinder between the inner surface of the small diameter cylinder 35 and the outer surface of the small diameter cylinder.
46 was provided.

As the second means, the suction valve 48 having the first means and having the inner surface of the lower end of the cylinder has an elastic taper shape which rises inward from the periphery of the suction valve hole 25 formed in the cylinder bottom wall 24. The cylinder 25a and the valve rod 47 suspended from the lower surface of the bottom wall of the small diameter cylinder are inserted into the tapered cylinder 25a.
Is vertically movable and is fitted in a watertight manner, and a groove 49 is bored in the outer surface of the upper portion of the valve rod 47, and the valve rod 47 is lowered by pushing down the head to form a tapered shape. When the upper end of the cylinder 25a is located on the outer surface of the groove 49, the inside of the cylinder and the inside of the suction pipe can be communicated with each other through the groove.

As a third means, the second means is provided and the lower end of the valve rod 47 can be pulled out from the upper end of the tapered cylinder 25a when the small diameter cylinder 42 is raised to the upper limit with respect to the cylinder 21. .

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION First, a conventionally known part will be briefly described. 1 is a container body for erecting a mouth / neck portion 2, 11 is a mounting cylinder in which a peripheral wall 12 is screwed to the mouth / neck portion. The cylinder has a guide cylinder 14 standing upright from the upper surface of the top wall 13 having an opening at the center and a cylindrical stopper 15 hanging from the inner circumference of the top wall.

Reference numeral 21 is a cylinder, and an outward flange 22 attached to the upper end is brought into contact with the back surface of the top wall 13 and the stopper 15 is fitted on the inner surface of the upper portion of the cylinder to vertically extend into the container body 1. There is. The cylinder has a suction valve hole 25 in the center of a bottom wall 24 that closes a lower surface of a peripheral wall 23 that hangs down from the inner circumference of an outward flange, hangs a pipe fitting cylinder 26 from the outer circumference of the valve hole, and has an upper end on the outer surface of the cylinder. The suction pipe 27 is suspended by fitting the parts.

From the inside of the cylinder 21, an operating member 31 having a cylindrical piston on its lower outer surface is urged upward to stand up.
By vertically moving the operating member, the liquid in the container is sucked into the cylinder 21, and the liquid in the cylinder can be ejected from the nozzle of the pressing head fitted to the upper end of the operating member.

According to the present invention, the operating member 31 has a peripheral wall 33 suspended from the outer periphery of the top plate 32, and a cylindrical piston 34 is attached to the lower end of the peripheral wall to form a top cylinder 35. Surrounding the discharge valve hole 36 drilled in the center of 32, stand up the liquid outflow cylinder 37,
A head 39 with a nozzle 38 was fitted and formed on the outer surface of the upper end of the cylinder. The upward biasing of the operating member is performed by a metal spring 41 interposed between the mounting cylinder top wall portion inside the guide cylinder 14 and the head inner surface portion of the inner surface of the head peripheral wall 40. The protrusion of the head 39 is prevented by the engagement of the protrusion provided around the inner surface of the upper end and the protrusion provided around the outer surface of the lower end of the head peripheral wall 40.

In addition, a small-diameter cylinder 42 having an upper opening and a bottom is fitted into the top-end cylindrical body 35, and a discharge valve body having a second cylindrical piston 43 at the lower end outer periphery is inserted into the small-diameter cylinder 42. The discharge valve hole 36 was closed by the discharge valve body by vertically urging 44 so as to be vertically movable and urged upward by a metal spring 45 mounted in a small diameter cylinder so as to be fitted in a watertight manner. Between the outer surface of the small-diameter cylinder 42 and the inner surface of the topped tubular body 35, a concave groove is provided on one of the facing surfaces to form the inside of the cylinder 21, the lower surface of the discharge valve hole 36, and the small-diameter cylinder.
A flow path 46 communicating with the upper end opening surface of 42 is formed.

The suction valve may be formed of a ball valve or the like, but in the illustrated example, the valve rod 47 is hung from the center of the bottom plate of the small diameter cylinder 42, and the valve rod is pierced at the center of the cylinder bottom wall. The suction valve hole 25 is provided so as to be inserted into the elastic tapered cylinder 25a which is erected upward from the outer periphery of the suction valve hole 25. In this case, as shown in FIG. 1, when the operating member 31 is located at the upper limit, the valve rod 47 is pulled out from the upper end of the tapered barrel 25a, and when the operating member 31 is pushed down a little, the lower portion of the valve rod is tapered barrel 25a. It is provided so that the suction valve 48 is closed by entering the upper part of the. However, as described above, it is not always necessary that the lower end of the valve rod 47 be provided so as to come out from the upper end of the tapered cylinder 25a. This will be described later.

By vertically or circumferentially forming a groove 49 on the upper end of the valve rod 47, when the upper end of the tapered cylinder 25a is located on the outer surface of the groove, the inside of the cylinder 21 and the inside of the suction pipe 27 communicate with each other. It is provided to do so.

In the above structure, when the actuating member 31 is moved up and down several times in advance and the actuating member 31 is pushed down as shown in FIG. 2 from the state of FIG. After entering the inside of 25a and closing the suction valve 48, the inside of the cylinder 21 is made to have a high pressure by further pressing it down, so that the inside of the flow path 46 is also made to have a high pressure. Due to the high pressure, the discharge valve body 44 is pushed down into the small diameter cylinder 42 against the bias,
As the discharge valve body descends, the discharge valve hole 36 opens, so that the high-pressure liquid in the cylinder passes through the liquid outflow cylinder 37 and is further ejected through the nozzle 38 of the head 39.

The discharge valve element 44 rises due to the release of the high pressure in the cylinder such as the stop of the pressing of the operating member 31 and the discharge valve hole 36.
However, when a groove 49 is provided in the upper portion of the valve rod 47 as shown in the drawing, when the upper end of the tapered cylinder 25a is located on the outer surface of the groove, the high pressure liquid in the cylinder passes through the groove 49. In order to eliminate the high pressure state in the cylinder by escaping into the suction pipe 27, the discharge valve element 44 rises at the same time as the discharge and the discharge valve hole 36 is closed.

Next, when the head 39 is released, the operating member 31 rises, and when the valve rod 47 pulls out the tapered cylinder 25a, the inside of the cylinder 21 is negatively pressured by the rise of the top cylinder 35.
The negative pressure state is eliminated by sucking the liquid in the container through the suction pipe 27. Note that the tapered cylinder 25a is easily elastically deformed, that is, by making it thin and long, the tapered cylinder 25a elastically expands while the valve rod 47 rises from between the tapered cylinders 25a. It is also possible to flow the liquid into the cylinder, and in this case, the lower portion of the valve rod 47 may be provided in the tapered cylinder 25a with the actuating member 31 positioned at the upper limit.

As described above, the actuating member upper urging spring 41 is fitted between the top wall portion inside the guide cylinder 14 and the lower surface of the head 39 outside the peripheral wall 33, and also into the small diameter cylinder 42. By providing the spring 45 for urging the discharge valve body upward, it is possible to prevent both springs from getting wet with the content liquid and rusting.

[0021]

The present invention has the above-described structure. By forming the present invention as set forth in claim 1, the discharge valve body 44, which constantly closes the discharge valve hole 36 by upward bias, has a constant cylinder inside. When it reaches the high pressure state, the discharge valve is automatically pushed down to open the discharge valve, and the liquid pressure in the cylinder becomes lower than the biasing force above the discharge valve body and the discharge valve is closed at the same time. Therefore, as a pressure-accumulation type liquid ejection container, it is possible to improve liquid drainage during liquid ejection and when ejection is stopped.

Further, a small diameter cylinder 42 is fitted into a toped cylindrical body 35 forming the lower part of the operating member 31, and a discharge valve body 44 is biased upward into the small diameter cylinder 42 to be fitted therein. Since the discharge valve hole 36 formed in the top plate is closed, the entire pump does not become large as in the case of using the slider tube in the above-mentioned conventional example.

According to the second aspect, when the operating member 31 is pushed down, the residual pressure in the cylinder 21 can be released from the concave groove 49 into the container body through the suction pipe 27, and thus the operating member. 31 The liquid can be easily sucked into the cylinder when it is lifted.

According to the third aspect, the opening / closing function of the suction valve 48 can be enhanced and ensured.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a main part of the present invention.

FIG. 2 is a vertical cross-sectional view of a main part shown in a liquid ejection state.

FIG. 3 is a vertical cross-sectional view of a main part showing an operating member pushed down to a lower limit.

[Explanation of symbols]

1 container 11 mounting cylinder 21 Cylinder 25a Tapered tube 31 Actuating member 35 Top cylinder 42 Small diameter cylinder 47 Valve stem 48 Suction valve 49 Recessed groove

Claims (3)

[Claims] 1. An actuating member having a cylindrical piston on the lower outer surface is urged upward from a cylinder having a suction valve on the inner surface of the bottom, which is hung down into the container body, and is erected upward to be fitted to the upper end of the actuating member. By moving the head with a nozzle up and down, the liquid in the container can be ejected into the cylinder and the liquid in the cylinder can be ejected from the nozzle. With a cylindrical piston 34 attached at the lower end of the peripheral wall.
A discharge valve hole 36 is formed at the center of the top plate 32 of the
A liquid outflow cylinder 37 is erected around the above, and a head 39 is fitted to the upper end of the liquid outflow cylinder, and a small diameter cylinder 42 having an upper surface opening and a bottom is fitted into the top cylinder body 35. The discharge valve hole 36 is closed by a discharge valve body 44 that is upwardly urged into the small-diameter cylinder so as to be vertically movable and fitted in a watertight manner. Between,
A pressure accumulating liquid ejection container, characterized in that a flow path (46) is provided which connects the inside of the cylinder (21), the discharge valve hole (36) and the upper end opening surface of the small diameter cylinder. 2. A suction valve 48 on the inner surface of the lower end of the cylinder,
An elastic taper-shaped cylinder 25a that rises inward from the periphery of the suction valve hole 25 formed in the cylinder bottom wall 24 and a valve rod 47 that hangs from the bottom surface of the bottom wall of the small diameter cylinder described above are inserted into the taper-shaped cylinder 25a. The valve rod 47 is formed by vertically movable and watertightly fitted, and a groove 49 is formed in the upper outer surface of the valve rod 47, and the valve rod 47 is lowered by pushing down the head. The accumulator according to claim 1, wherein when the upper end of the tapered cylinder 25a is located on the outer surface of the groove 49, the inside of the cylinder and the inside of the suction pipe can communicate with each other through the groove. Liquid ejection container. 3. A cylinder having a smaller diameter than the cylinder 21.
When 42 rises to the upper limit, the lower end of the valve rod 47 is
a The pressure accumulating liquid ejection container according to claim 2, wherein the pressure accumulating liquid ejection container is formed so as to be able to be withdrawn from the upper end.