JP3770431B2 - Upside down liquid jet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a liquid jet container for both upside-down use.
[0002]
[Prior art]
For example, as shown in Japanese Utility Model Publication No. 56-20052, there is known a liquid ejector for both upside-down, but the conventional one is fitted with a main pipe of a trifurcated connecting pipe at the lower end of the cylinder and branched downward. The auxiliary pipe that protrudes upward is fitted with the upper end of the suction pipe for upright, and the auxiliary pipe that branches off and protrudes is fitted with the lower end of the suction pipe for upside down. A check valve that closes the pipe line when inverted is provided in the auxiliary pipe protruding upward and a check valve that closes the pipe line when upright is provided in the auxiliary pipe protruding upward. Met.
Therefore, the two suction pipes for upright and upside-down use the former to hang downward from the lower end of the cylinder, while the latter rises upward, and these are integrally connected to the cylinder. Therefore, it is inconvenient when the cylinder is inserted into and extracted from the container body, and if the container body is transparent, the suction pipes are visible, and the appearance is impaired.
[0003]
[Problems to be solved by the invention]
According to the present invention, a first connection cylinder and a second connection cylinder each having a check valve are coaxially connected between a suction pipe and a suction pipe that hangs down the suction pipe. By interposing it, a single suction pipe is provided so as to hang down in appearance, thereby eliminating the above disadvantages.
[0004]
[Means for Solving the Problems]
From the lower surface of the trigger-type or vertical pump-type liquid ejector attached to the container body neck to the lower end of the liquid suction cylinder 2 that is in communication with the cylinder of the liquid ejector and hangs down into the container body, The upper part of the first connecting cylinder 5 is fitted into the lower part of the first connecting cylinder, the upper part of the second connecting cylinder is further fitted into the lower part of the second connecting cylinder 14 and the upper part of the suction pipe 23 is fitted into the container body,
The first connecting cylinder 5 has a lower portion of the cylindrical portion 6 as a large-diameter cylindrical portion 7 via an outward flange, and a thick partition wall 8 is provided horizontally on the lower inner surface of the cylindrical portion above the outward flange. The first valve hole 9 that opens from the outer surface of the cylinder part to the upper surface of the central part of the partition wall is opened to the partition wall, and the partition wall is communicated with the upper and lower sides of the partition wall on the side of the valve hole. Perforated holes 10 to be drilled,
Further, the upper peripheral edge of the partition wall central opening 9a is used as the first valve seat 11, and the first ball valve 12 placed on the valve seat forms the upright check valve 13 and the upper part of the first ball valve. A first ball valve support projection 4 is attached to the inner surface of the cylinder part or the lower inner surface of the suction cylinder 2 with an appropriate gap therebetween.
The second connecting cylinder 14 is provided with an inward flange 15 at the upper end of the cylinder portion so that the flange hole 16 of the flange communicates with the water passage hole 10, and the lower surface of the inward flange is used as a second valve seat 17. A second ball valve 18 capable of sealing the flange hole 16 in contact with the second valve seat is loosely fitted into the upper part of the cylinder so as to be movable up and down, and the second ball valve 18 and the second valve seat 17 are formed. A second ball valve support projection 20 for supporting the second ball valve 18 was attached to the inner surface of the cylinder portion while the check valve 19 for inversion was opened.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Referring to the drawings, reference numeral 1 denotes a trigger type liquid ejector. The liquid ejector may be a vertical pump type as in the above-described conventional example, and in this case, the suction pipe fitting cylinder portion suspended from the lower end of the cylinder forms a liquid suction cylinder. Also in the case of the illustrated trigger type liquid ejector, the cylinder part conventionally used as the cylinder part for fitting the suction pipe is referred to as the liquid suction cylinder 2. In the case shown in the drawing, the lower end of the cylinder is reduced inwardly inwardly, and a plurality of split grooves 3 having a lower end face opening groove are provided, and the first ball valve support protrusion 4 is formed on the inner surface of the cylinder wall portion between the split grooves. However, these protrusions may be attached to the upper inner surface of the first connecting cylinder, which will be described later. The reduced diameter facilitates the fitting of the upper part of the first connecting cylinder.
[0006]
The upper part of the first connecting cylinder 5 is fitted to the lower end of the liquid suction cylinder 2. The first connecting cylinder has a lower portion of the cylindrical portion 6 as a large-diameter cylindrical portion 7 through an outward flange, and a thick partition wall 8 is provided on the inner surface of the lower portion of the cylindrical portion above the outward flange, A first valve hole 9 is formed in the partition wall from the outer surface of the cylinder portion through the partition wall 8 to the upper surface of the central portion of the partition wall, and a water passage hole 10 is formed on the outer peripheral portion of the partition wall on the side of the valve hole. Each is drilled. As shown in FIGS. 3 and 4, the water passage hole 10 has a C-shaped cross section along the outer periphery of the partition wall. The upper peripheral edge of the opening 9a is formed as a first valve seat 11 having a tapered shape having a small lower diameter, and the first ball valve 12 is placed on the first valve seat to serve as a check valve 13 for upright. The above-described first ball valve support projection 4 is positioned above the first ball valve 12, and as shown in FIG. 2, the first ball valve 12 is supported by the projection when the container is inverted.
[0007]
The upper portion of the second connecting cylinder 14 is fitted into the large diameter cylindrical portion 7 of the first connecting cylinder 5. The second connecting cylinder has an inward flange 15 at the upper end of the cylinder portion, and the flange hole 16 communicates with the water passage hole 10. The lower surface of the inward flange 15 has a tapered shape with a small upper diameter to form a second valve seat 17. When the container body 31 is inverted as shown in FIG. 2, the valve hole formed by the flange hole 16 in contact with the second valve seat 17 is sealed. The possible second ball valve 18 is loosely fitted into the upper part of the cylinder so as to be movable up and down, and the check valve 19 for inversion formed by the second ball valve 18 and the second valve seat 17 is opened. The second ball valve support protrusion 20 for supporting the second ball valve 18 was attached to the inner surface of the cylindrical portion 21. A groove 22 is provided vertically on the inner surface of the cylindrical wall between the projections. The protrusions 20 are elastically deformable so that the second ball valve 18 can be forcedly pushed between the protrusions and the inward flange 15.
[0008]
The upper part of the suction pipe 23 is fitted in the lower part of the second connecting cylinder 14, and the suction pipe is suspended up to the bottom of the container body.
In the above configuration, when the liquid is put into the container body 31 and the liquid ejection operation is performed in the container body upright state shown in FIG. 1, the inside of the liquid suction cylinder 2 becomes negative due to the negative pressure in the cylinder, At this time, since the first ball valve 12 is placed on the first valve seat 11 and closes the check valve 13 for the upright position, the second ball valve 18 is separated from the second valve seat 17 and is inverted. Since the check valve 19 is opened, the liquid in the container passes through the suction pipe 23, the second connection cylinder 14, and the water passage hole 10 of the first connection cylinder 5, and the liquid in the container passes through the liquid suction cylinder 2. It is sucked in.
[0009]
In the state where the container body 31 is inverted as shown in FIG. 2, the lower end of the suction pipe is exposed above the liquid level 24 in the container body, but the first ball valve 12 is separated from the first valve seat 11 and the first ball valve. Since the second ball valve 18 is supported on the support protrusion 4 and is placed on the second valve seat 17 to close the check valve 19 for inversion, when the liquid ejection operation is performed in this state, the first The liquid in the container is sucked into the first connecting cylinder 5 through the valve hole 9 and further into the cylinder through the liquid suction cylinder 2.
[0010]
【The invention's effect】
The present invention is configured as described above, and the upper part of the first connecting cylinder 5 is connected from the lower surface of the liquid ejector to the lower end of the liquid suction cylinder 2 that is in communication with the cylinder of the ejector and hangs down. Since the upper part of the second connecting cylinder 14 is fitted into the lower part of the first connecting cylinder, and the upper part of the suction pipe 23 is further fitted to the lower part of the second connecting cylinder and suspended in the container body, The first connecting cylinder, the second connecting cylinder, and the suction pipe are formed as a single cylinder in appearance, so that they are taken out of the container together with the liquid ejector for refilling the liquid, etc. It is easy to hang down into the container body, and a thick partition wall 8 is horizontally provided on the lower inner surface of the first connecting cylinder 5 to partition the partition wall from the outer surface of the cylinder portion through the interior of the partition wall. Since the first valve hole 9 for opening 9a is formed in the upper surface of the center of the wall, the upper periphery of the opening 9a is used as the first valve seat 11. Therefore, just by placing the first ball valve 12 on the first valve seat, the check valve 13 for upright is closed, that is, closed when the container is upright, and opened when the container is inverted, and the suction pipe 23 A valve having a first valve hole 9 communicating with the inside of the container can be formed at an upper position than the partition wall and the partition wall outer peripheral portion on the side of the first valve hole 9 of the partition wall communicates with the upper and lower sides of the partition wall. Since the water hole 10 is drilled, the upper part of the second connecting cylinder 14 with the check valve 19 for inversion is connected to the lower part of the first connecting cylinder 5, and the suction pipe 23 is suspended from the lower part of the second connecting cylinder. Then, they can be formed into a single cylindrical shape, and a liquid suction passage for a liquid jetting device for both upside-down and upside-down use can be formed.
[Brief description of the drawings]
FIG. 1 is a side view of a liquid ejection container with an essential part in cross section, shown in an upright state.
FIG. 2 is a side view of the cross section of the main part, showing the container in an inverted state.
FIG. 3 is an end view of FIG. 2A-A.
4 is an end view taken along line B-B in FIG.
[Explanation of symbols]
2 ... Liquid suction cylinder 5 ... First connecting cylinder
13 ... Check valve for upright 14 ... Second connecting cylinder
19 ... Inverted check valve

Claims (1)

From the lower surface of the trigger-type or vertical pump-type liquid ejector attached to the container body neck to the lower end of the liquid suction cylinder 2 that is in communication with the cylinder of the liquid ejector and hangs down into the container body, The upper part of the first connecting cylinder 5 is fitted into the lower part of the first connecting cylinder, the upper part of the second connecting cylinder is further fitted into the lower part of the second connecting cylinder 14 and the upper part of the suction pipe 23 is fitted into the container body,
The first connecting cylinder 5 has a lower portion of the cylindrical portion 6 as a large-diameter cylindrical portion 7 through an outward flange, and a partition wall 8 is provided horizontally on the lower inner surface of the cylindrical portion above the outward flange. A first valve hole 9 is formed in the wall from the outer surface of the cylinder part through the inside of the partition wall to the upper surface of the central part of the partition wall, and water is communicated to the outer peripheral part of the partition wall on the side of the valve hole. Drill holes 10 respectively.
Further, the upper peripheral edge of the partition wall central opening 9a is used as the first valve seat 11, and the first ball valve 12 placed on the valve seat forms the upright check valve 13 and the upper part of the first ball valve. A first ball valve support projection 4 is attached to the inner surface of the cylinder part or the lower inner surface of the suction cylinder 2 with an appropriate gap therebetween.
The second connecting cylinder 14 is provided with an inward flange 15 at the upper end of the cylinder portion so that the flange hole 16 of the flange communicates with the water passage hole 10, and the lower surface of the inward flange is used as a second valve seat 17. A second ball valve 18 capable of sealing the flange hole 16 in contact with the second valve seat is loosely fitted into the upper part of the cylinder so as to be movable up and down, and the second ball valve 18 and the second valve seat 17 are formed. An inverted dual-use liquid ejector characterized in that a second ball valve support projection 20 for supporting the second ball valve 18 is attached to the inner surface of the cylindrical portion when the check valve 19 for inversion is open.

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