JP2002066398A - Liquid jetting vessel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid jetting vessel free from the liquid sagging at the time of finishing the jetting of the liquid and capable of conveniently miniaturizing. SOLUTION: The liquid jetting vessel is formed from a main tube 31, which is composed of a vessel body 1 and a working member erected by applying force upwardly from the inside of a 1st cylinder 21 with a suction valve 24 hung in the vessel body 1, has an opened lower end surface and uses the lower end outside periphery as a tubular piston 32, a 2nd cylinder 41 engaged to the inside of the main tube and having an opened under surface, a piston 51 engaged to the inside of the 2nd cylinder 41 by applying force downwardly and a push down head 61 with a nozzle hole 65, which is engaged to the upper part of the main tube, a liquid flow out passage formed from a 1st through hole 45 perforated in the 2nd cylinder and a 1st small groove 46 formed between the 2nd cylinder and the main tube communicates with the nozzle hole 65, the inside surface of the 1st through hole is closed with the piston 51 positioned in the lower limit to form a discharge valve and the discharge valve is formed to be opened and closed by the vertical movement of the piston with the inside of the 1st cylinder and the 2nd cylinder pressurized and evacuated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a vertical pump type liquid ejection container.

[0002]

2. Description of the Related Art For example, as shown in Japanese Utility Model Publication No. 50-93305,
From the inside of the large-diameter first cylinder with a suction valve, which is hung down into the container body, is urged upward by a first spring to raise an operating member having a press-down head with a nozzle fitted at the upper end thereof, and the operating member Inside, a discharge valve member for closing a discharge valve hole formed in the top wall of the operating member by the upward bias of the second spring is housed via a small-diameter second cylinder. When the pressure inside both of the second cylinders becomes high, the discharge valve member descends with respect to the operating member to open a discharge valve hole, and the liquid in the first and second cylinders passes through the discharge valve holes by the opening, and the valve 2. Description of the Related Art There is known a vertical liquid ejection container capable of ejecting from a nozzle hole of a pressing head communicating with the hole.

[0003]

In the above-mentioned conventional container, a second spring for biasing the discharge valve member upward is provided separately from the first spring for biasing the operating member upward, so that the insides of the first and second cylinders are provided. Since only the discharge valve member is provided so as to descend with respect to the operating member when both are pressurized, the discharge of the discharge liquid can be improved, but the structure of each member becomes complicated and the number of members increases, so Also, there is a disadvantage that the assembly of each member is troublesome.

[0004] The present invention is provided to eliminate these drawbacks and, in particular, to make the pump compact.

[0005]

Means for Solving the Problems As a first means, from the inside of a first cylinder with a suction valve, which is vertically installed in a container body,
The operating member with the discharge valve is urged upward to stand up, and the up and down movement of the operating member sucks the liquid in the container into the first cylinder, and the lowering head at the upper end of the operating member has the liquid in the first cylinder. In a liquid ejection container provided so as to be able to eject from a nozzle hole, the operating member is formed into a main cylinder 31 having a cylindrical shape having a lower end surface opening and a lower end outer periphery having a cylindrical piston 32, and is fitted in the main cylinder in a watertight manner. The second cylinder 41 having a lower surface opening,
The second cylinder 41 is formed by a piston 51 fitted into the cylinder by being urged downward and vertically by a predetermined stroke and a nozzle head 61 having a nozzle hole fitted at the upper end of the main cylinder. And a first small groove 46 formed between the second cylinder and the main cylinder in communication with the first through hole, and a liquid outflow path is formed by the first through hole 45 formed in the first through hole. Road and nozzle hole 65
And the first outer surface of the piston 51 located at the lower limit.
By closing the through hole 45, a discharge valve 55 is formed by these pistons and the first through hole, and the discharge valve is formed by the vertical movement of the piston 51 with respect to the second cylinder due to high pressure and reduced pressure in the first and second cylinders. 55 is openable and closable.

As a second means, the above-mentioned first means is provided, the upper surface of the main cylinder 31 is opened, and the second cylinder 41 is opened.
The upper end surface is closed by a top plate 43, and the piston 51 is formed by increasing a part of a shaft 52, which is loosely inserted into the second cylinder 41, with a large outer diameter. Into the sliding hole 44 drilled in the shaft, vertically and watertightly to engage the engaging projection 53 attached to the outer surface of the upper end of the shaft with the outer peripheral portion of the upper surface of the sliding hole. The second and third through holes 48 and 35 are formed in the upper part of the cylinder 41 and the lower part of the main cylinder 31 located in the first cylinder.
And an air passage communicating these holes is formed between the second cylinder and the main cylinder.

As a third means, the above-mentioned first or second means is provided, and the lower part of the first cylinder 21 is made to rise up and inward in a double cylindrical shape, and a suction valve is inserted into the upper end of the upright cylindrical part 23. twenty four
Is provided, and is communicated with the valve hole of the suction valve so that the upright cylindrical portion 23 is provided.
The fitting pipe 25 was hung down from the inner surface of the pipe, and the upper part of the suction pipe 26 was fitted into the fitting pipe in a watertight manner.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Is a container body that stands up the mouth and neck 2, and 11 is a mounting member that hangs a first cylinder, which will be described later. The heavy cylinder 13 is erected, an engagement cylinder 15 is attached to the upper end of the inner cylinder 14, and the peripheral wall 12 is extended upward to form a covering cylinder 16.

A first gap is provided between the inner and outer cylinders of the inner and outer double cylinder 13.
The upper part of the cylinder 21 is fitted. The first cylinder has an upper portion with a large-diameter portion and a lower portion with a small-diameter portion 22, and an upright cylindrical portion 23 erected upward from the lower end of the small-diameter portion via an inward flange. A suction valve 24 of a ball valve type is provided, the fitting tube 25 is made to communicate with the valve hole of the suction valve, and the fitting tube 25 is suspended from the inner surface of the upright cylinder portion, and the upper portion of the suction pipe 26 is fitted watertight into the fitting tube. I'm wearing it. 27 is an outside air suction hole.

From within the first cylinder, the operating member is erected by urging the operating member upward. The operating member includes a main cylinder, a second cylinder, a piston, and a pressing head.

The main cylinder 31 has a cylindrical shape with an opening at the lower end surface. The outer periphery of the lower end is a cylindrical piston 32, and the cylindrical piston is vertically movable into the first cylinder 21 and a first spring 33 is provided.
Urged upward for fitting. An upwardly-facing step is provided at an intermediate portion in the vertical direction of the main cylinder, and the upper surface of the step is formed by the engagement cylinder 15 described above.
It is engaged with the lower surface to set the upper limit of the main cylinder, and the small outer diameter portion 34 is formed through an inward flange at the upper part of the main cylinder. A third through hole 35 described later is formed in a lower part of the main cylinder.

The second cylinder 41 is fitted in the main cylinder 31 in a watertight manner. The upper portion of the second cylinder 41 has a small outer diameter portion 42 via an inward flange. The top plate 43
And a sliding hole 44 is formed in the center of the top plate. Also, a first through hole is provided in the middle portion of the second cylinder and slightly below.
45, and a first small groove 46 is formed from the outer surface of the hole to the upper surface of the second cylinder through the upper surface of the inward flange and the outer surface of the small outer diameter portion 42. A liquid outflow path is formed by one small groove, and a concave groove 47 is provided on the outer surface of the second cylinder facing the third through hole 35, and a small outer diameter portion is formed.
34, a second through hole 48 is formed, and a second small groove 49 is formed in the outer surface of the second cylinder from the second through hole to the concave groove, so that the second through hole 48 and the second small groove are formed. The 49 and the concave groove 47 form an air passage communicating between the upper part of the second cylinder and the upper part of the first cylinder through the third through hole 35.

[0013] The piston 51 is formed by making the middle slightly lower portion of the shaft rod 52 loosely inserted into the second cylinder into a large outer diameter,
The upper part of the shaft is vertically and movably inserted into the sliding hole 44, and is provided with an engaging projection 53 on the outer periphery of the upper end of the shaft to engage the upper edge of the sliding hole to prevent the lower part from being pulled out. are doing. The outer surface of the piston 51 water-tightly closes the inner surface of the first through-hole 45 at the lower limit position, which forms a discharge valve 55. Between the upper surface of the piston and the lower surface of the inward flange, there is provided a second spring 54 which is loosely fitted on the outer surface of the shaft portion, and biases the piston 51 downward with respect to the second cylinder.

Reference numeral 61 denotes a press-down head for fitting a connecting cylinder 63 suspended from the center of the top wall 62 onto the upper outer surface of the main cylinder 31.
A lower portion of a peripheral wall 64 vertically extending from an outer periphery of the cylinder 62 is loosely fitted to an inner surface of an upper end portion of the covering cylinder 16. In addition, the front portion of the top wall 62 is formed as a thick portion by forming a nozzle hole 65 in the thick portion so as to open to the front surface of the peripheral wall. They are communicating.

In the above configuration, when the pressing head 61 is pressed down with respect to the container body 1, the operating member is lowered against the bias of the first spring 33, and the pressure in the first and second cylinders is increased. As shown in FIG. 2, the piston 51 rises with respect to the second cylinder 41, and when the piston rises, the discharge valve 55 formed by the outer surface of the piston and the inner surface of the first through hole 45 opens. It is jetted outward through a road and through a nozzle hole 65. Due to the pressure reduction in the two cylinders due to the stop of the lowering of the press-down head 61 and the ejection of the liquid, the piston 51 closes the discharge valve again by the downward bias of the second spring 54, and the operating member rises by releasing the press-down head from this state. The suction valve 24 opens to suck the liquid in the container into the first and second cylinders.

[0016]

The present invention has the above-mentioned structure, and by forming it as in claim 1, the inside of the first cylinder 21 and the inside of the second cylinder 41 are directly connected without passing through a communication passage or the like. A discharge valve is formed by the first through hole 45 of the second cylinder and the outer surface of the piston 51 in the second cylinder, and the first through hole 45 of the second cylinder, the second cylinder, and the main cylinder. A liquid outflow passage is formed by the first small groove 46 provided therebetween, and the outflow passage is communicated with the nozzle hole, so that the pump structure can be simplified, and the length from the lower end of the main cylinder to the upper surface of the pressing head is shortened. The pump can be downsized.

According to the second aspect, the piston 51
The upper second cylinder space does not become high in pressure when the piston rises with respect to the second cylinder 41, thereby ensuring opening and closing of the discharge valve and facilitating communication between the liquid outflow passage and the nozzle hole 65. I can do it.

According to the third aspect, the first cylinder is provided.
21 lengths can be reduced.

[Brief description of the drawings]

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

FIG. 2 is a longitudinal sectional view of a main part of the container during a liquid ejection operation.

[Explanation of symbols]

 11 mounting member 21 first cylinder 31 main cylinder 41 second cylinder 51 piston 61 depression head

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E084 AA04 AA12 AB01 DA01 DB12 FA09 FB01 GA01 GA08 GB01 GB12 GB14 KB06 LB02 LC01 LD22 LD26

Claims (3)

[Claims] 1. An operating member with a discharge valve is urged upward from an inside of a first cylinder with a suction valve, which is vertically installed into a container body, and rises up. In a liquid ejection container provided so as to be able to suck into the one cylinder and eject the liquid in the first cylinder from the nozzle hole of the pressing head at the upper end of the operating member, the operating member is formed in a cylindrical shape having a lower end opening. A main cylinder 31 having a cylindrical piston 32 at the lower end outer periphery; and a second cylinder having a lower surface opening and fitted in the main cylinder in a watertight manner.
41, a piston 51 fitted into the second cylinder by being urged downward and vertically by a fixed stroke, and a press-down head 61 with a nozzle hole fitted to the upper end of the main cylinder
A first through hole 45 formed in the second cylinder 41 and a first small groove 46 formed between the second cylinder and the main cylinder in communication with the first through hole. A liquid outflow path is formed, the outflow path communicates with the nozzle hole 65, and the first through hole 45 is closed by the outer surface of the piston 51 located at the lower limit, and discharge is performed by the piston and the first through hole. A liquid ejection container comprising a valve 55 formed so that the discharge valve 55 can be opened and closed by the vertical movement of the piston 51 with respect to the second cylinder due to high pressure and reduced pressure in the first and second cylinders. 2. An upper surface of the main cylinder 31 is opened, an upper end surface of the second cylinder 41 is closed by a top plate 43, and a part of the shaft 52 into which the piston 51 is loosely inserted into the second cylinder 41 is enlarged. An engaging projection 53 formed on the outer surface of the upper end of the upper end of the shaft rod so as to be vertically movable and watertightly inserted into a sliding hole 44 formed in the center of the top plate 43 and formed on the upper end of the shaft rod. And second and third through holes 48 and 35 are formed in the upper part of the second cylinder 41 and the lower part of the main cylinder 31 located in the first cylinder. 2. The liquid ejection container according to claim 1, wherein an air passage connecting the two holes is formed between the second cylinder and the main cylinder. 3. A lower portion of the first cylinder 21 is erected upwardly and inwardly in a double cylindrical shape, a suction valve 24 is provided in an upper end portion of the erected cylinder portion 23, and is communicated with a valve hole of the suction valve. 3. The liquid ejection container according to claim 1, wherein the fitting tube 25 is hung down from the inner surface of the upright tube portion 23, and the upper part of the suction pipe 26 is fitted in the fitting tube in a watertight manner.