Liquid jet nozzle and liquid supply tool

Abstract

To provide a liquid jet nozzle in which a liquid supply tool is configured by using a liquid storage container made of a spout pouch, the liquid jet nozzle being configured such that liquid can be smoothly sucked from the container.SOLUTION: In a shaft part 24, a hole portion is formed in an outer peripheral surface and a hollow communicating with a liquid inflow path of a liquid jet nozzle 2. The shaft part 24 is arranged so as to penetrate a spout 51 of a liquid storage container 5 and reaches the inside of the container in a state where the nozzle 2 projects downward and the liquid jet nozzle 2 is connected to the spout 51 of the liquid storage container 5.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a liquid ejection nozzle (hereinafter simply referred to as "nozzle") of a liquid supplying tool, and relates to the structure of the liquid ejection nozzle that is capable of ejecting and supplying liquid stored in a liquid storage container consisting of a spout pouch. [Background technology]

[0002] As a liquid supplying tool for supplying cleaning liquid or the like to a predetermined location or for spraying paint, there is known a configuration in which, as shown in Figure 8, a compressed air supply means 3 and a liquid storage container 4 are connected to a liquid spray nozzle 2, compressed air is introduced into the liquid spray nozzle 2 to suck in liquid from the liquid storage container 4, and the liquid is mixed with the compressed air and sprayed from the nozzle outlet 2a of the nozzle 2 (see, for example, Patent Documents 1 and 2).

[0003] In more detail, the compressed air supply means 3 of the liquid supply tool 1 shown in the figure is an air delivery device configured in a gun shape similar to a painting air gun, and the air outlet 31 at the tip is connected to the liquid ejection nozzle 2, and when the trigger is pulled, compressed air delivered from a compressor (not shown) is supplied into the nozzle 2. The liquid storage container 4 is a storage tank made of synthetic resin that stores liquid and has walls that expand and contract like bellows, and its upper spout 41 is designed to be attached to the lid 22 of the liquid ejection nozzle 2. As shown in FIG. 9, the liquid jet nozzle 2 has a jet outlet 2a at the tip of the nozzle body 21, an air inlet 2b at the other end to which the air jet outlet 31 of the compressed air supply means 3 is connected, and a liquid inlet 2f at the bottom to which the spout 31 of the liquid storage container 3 is connected. Inside the nozzle body 21, there are provided and integrally molded flow paths: an air flow path 2c that leads to the air inlet 2b, a liquid flow path 2g that leads to the liquid inlet 2f and intersects with the air flow path 2c, and a tubular mixing flow path 2d that leads from the intersection of the liquid flow paths 2g to the jet outlet 2a.

[0004] The liquid supply device 1 having the above configuration blows compressed air from the compressed gas supply means 3 into the liquid ejection nozzle 2 to create a negative pressure state downstream of the liquid flow path 2g, thereby sucking the liquid in the liquid storage container 4 into the nozzle, mixing it with the compressed air, and ejecting it from the ejection port 2a at the tip of the nozzle. In addition, the liquid storage container 4 shrinks in size as the liquid inside it flows out, and once it is empty, it can be disposed of together with the liquid ejection nozzle 2 as plastic waste, as shown in Figure 10. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-14339 [Patent Document 2] Japanese Patent Application Laid-Open No. 2007-245044 Summary of the Invention [Problem to be solved by the invention]

[0006] The liquid storage container 4 used in the conventional liquid supply device 1 has walls that fold like bellows, so it is not possible to print and display instructions on the surface of the container, such as information about the stored liquid, how to use it, and how to dispose of it. Therefore, when selling the liquid storage container 4, it was necessary to separately prepare a label, tag, tag or the like showing the handling instructions and cautions and attach it to the liquid storage container 4. If the label and the like were produced separately from the liquid storage container 4, the product cost would increase, and it would be necessary to manage the liquid storage container 4 and the label so that they do not separate during storage or transportation, which is troublesome, and it would also be necessary to secure a large space for display.When disposing of the liquid storage container 4, the label and the liquid storage container 4 must be separated and disposed of, which is also troublesome.

[0007] In view of the problems associated with the prior art, the present invention aims to use a liquid storage container made of a spout pouch instead of the bellows-shaped liquid storage container of a liquid supply device, and to configure a liquid ejection nozzle so that liquid can be smoothly sucked in and ejected from this liquid storage container. [Means for solving the problem]

[0008] In order to solve the above problem, the present invention uses a liquid storage container consisting of a spout pouch on the surface of which information can be printed and displayed, instead of the conventional liquid storage containers with walls that expand and contract like bellows. When the spout of this spout pouch-type liquid storage container is connected to the liquid ejection nozzle described above to form a liquid supply device, the liquid stored inside the container is sucked up smoothly and without leakage into the liquid ejection nozzle, where it is mixed with compressed gas and ejected; in other words, the liquid ejection nozzle is configured so that the liquid can be sucked up from inside the container and ejected from the nozzle without any hindrance.

[0009] That is, the liquid jetting nozzle of the present invention is a nozzle having a jetting outlet at its tip, an air inlet at the other end to which compressed air supply means is connected, a lid portion that fits externally onto the spout of a liquid storage container made of a spout pouch having a liquid stored on its outer peripheral surface, a liquid inlet on the inside of the lid portion, and an air flow path inside that leads to the air inlet, a liquid flow path that leads to the liquid inlet and intersects with the air flow path, and a mixing flow path that leads from the intersection of the liquid flow paths to the jetting outlet, The liquid inlet has a hollow shaft portion that is open at both the top and bottom ends and that protrudes parallel to the peripheral side surface of the lid portion from the point where the liquid flow path intersects with the air flow path, and the shaft portion is configured to be long enough to pass through the spout of the liquid storage container and reach the inside of the liquid storage container when the lid portion is connected to the spout of the liquid storage container.

[0010] According to this, the liquid supplying tool is constructed by connecting the spout of the liquid storage container made of a spout pouch to the lid of the liquid jetting nozzle, and the air jetting outlet of the compressed air supplying means to the air inlet. The operation of connecting the spout of the liquid storage container to the lid of the liquid spray nozzle is performed by inserting the shaft of the liquid inlet provided on the inside of the lid into the spout of the liquid storage container, and when the spout is connected to the lid, the shaft penetrates the hollow interior of the spout and protrudes into the liquid storage container, with its tip reaching the inside of the liquid storage container. Then, by operating the compressed gas supply means to blow compressed air into the liquid ejection nozzle, the downstream side of the liquid flow path inside the nozzle becomes negative pressure, and the liquid in the liquid storage container is sucked into the nozzle through the shaft portion located inside the liquid storage container, mixed with the compressed air, and ejected from the ejection port at the tip of the nozzle.

[0011] The liquid storage container has a spout connected to the lid of the liquid-speed nozzle, and the axis of the liquid inlet of the liquid-speed nozzle is inserted into it. Therefore, even if the nozzle is tilted or overturned while spraying liquid from the liquid-speed nozzle, the axis acts as an axis to support the inside of the container, maintaining the shape and posture of the container, so the container will not bend or break, and the stored liquid can be smoothly sucked up and delivered into the nozzle through the axis. The shaft may have a plurality of holes formed in its outer circumferential surface to allow efficient suction of the liquid.

[0012] By using a spout pouch container as a liquid storage container, it is possible to print and display instructions about the stored liquid and handling instructions on the surface of the container, eliminating the need to prepare a label or shipping tag with the instructions printed on it separately from the container.Furthermore, once the spout pouch container is emptied of all the stored liquid, it can be disposed of as plastic waste, making it easy to handle.

[0013] In the liquid supply device having the above configuration, it is preferable that the air outlet of the compressed air supply means is inserted into and connected to the inside of the air inlet of the liquid jet nozzle, and that a protrusion provided on the outer peripheral surface of the air outlet of the compressed air supply means is engaged with a groove formed in a spiral shape from the end of the air inlet to its inner surface, thereby fitting and fixing the liquid jet nozzle to the air outlet of the compressed air supply means. With this configuration, the liquid ejection nozzle can be fitted and fixed to the air outlet of the compressed air supply means with a simple operation, and the liquid ejection nozzle will not come off even if the compressed air supply means is tilted or turned upside down when the compressed gas is ejected from the means. Furthermore, after use of the liquid supply tool, the liquid ejection nozzle or compressed air supply means can be removed with the simple operation of rotating the liquid ejection nozzle or compressed air supply means to release the engagement between the protrusion and the groove.

[0014] In the liquid supplying tool having the above-described structure, it is preferable that the liquid storage container made of a spout pouch is supported by being covered with a container support. A spout pouch container made of a pouch film is highly flexible, and if the liquid supply device is tilted or overturned during use, the spout pouch may be deformed, such as being folded or crushed, which may interfere with liquid ejection. By supporting the outer surface of the spout pouch with the container support as described above, the shape of the spout pouch is maintained and it becomes less likely to be folded or crushed, allowing for smooth, uninterrupted liquid ejection.

[0015] In the liquid supplying device having the above configuration, the compressed air supply means for blowing compressed air into the liquid-spout nozzle can be a suitable device or instrument, such as a compressor or pump, that can be attached to the air inlet of the nozzle and capable of blowing compressed air. Furthermore, although the liquid-spout nozzle of the present invention is adapted for use with a liquid-storing container consisting of a spout pouch, a container of a form other than a spout pouch may also be used as long as it is capable of storing liquid inside and can deliver the liquid by connecting a spout to the liquid-spout nozzle. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is an external view of a liquid supply tool according to an embodiment of the present invention; [Figure 2] FIG. 2 is an external view of the liquid ejection nozzle of FIG. [Figure 3] 2 is an enlarged view showing a schematic vertical cross section of the liquid ejection nozzle of FIG. 1. [Figure 4] FIG. 2 is an external view of the compressed air supply means of FIG. [Figure 5] 1A is an enlarged view of the end of the air inlet of the liquid ejection nozzle, and FIG. 1B is an enlarged cross-sectional view of the main part for explaining how the air inlet of the liquid ejection nozzle is connected to the air outlet of the compressed air supply means. [Figure 6] FIG. 2 is an external view of the container support member of FIG. [Figure 7] FIG. 2 is an external view of the liquid storage container of FIG. [Figure 8] FIG. 10 is a diagram showing the configuration of a conventional liquid supply tool. [Figure 9] 9 is an enlarged view showing a schematic vertical cross section of the liquid ejection nozzle portion of FIG. 8. FIG. [Figure 10] FIG. 9 is an external view of the liquid storage container of FIG. 8 after use. DETAILED DESCRIPTION OF THE INVENTION

[0017] A preferred embodiment of the present invention will be described with reference to the drawings. The following embodiments are merely examples for explaining the present invention, and the present invention is not limited to the embodiments.

[0018] FIG. 1 shows one embodiment of the liquid supply device of the present invention. As shown in the figure, the liquid supply device 1 comprises a liquid ejection nozzle 2, a compressed air supply means 3, a liquid storage container 5, and a container support 6, and is configured so that the compressed air supply means 3 and the liquid storage container 5 are connected to the nozzle 2, compressed air is introduced into the inside of the nozzle 2 to suck liquid from the liquid storage container 5, and the liquid is mixed with the compressed air and ejected from the nozzle 2 outlet.

[0019] The liquid ejection nozzle 2 is made of synthetic resin material and is integrally molded by injection molding. As shown in Figures 2 and 3, the nozzle has an outer shape in which a cylindrical lid portion 22 of a larger diameter is disposed on the lower peripheral surface of a bell-shaped main body portion 21 that is turned sideways via a cylindrical neck portion 23, and flanges 22a protrude from both upper side edges of the lid portion 22 to the outer peripheral surface extending to the top of the main body portion 21.

[0020] 2, the main body 11 of the nozzle 1 has an outlet 2a formed in the center of its tapered tip end, and a hollow, wide opening at the rear end that serves as an air inlet 2b to which compressed air supply means 3 is connected, with the outlet 2a and air inlet 2b communicating with an air flow path 2c and a mixing flow path 2d provided inside. A recessed groove 2e is formed in the inner peripheral surface of the air inlet 2b, into which the outer peripheral portion of the air outlet 31 of the compressed air supply means 3 fits. The air flow path 2c has an inner diameter that gradually narrows from its rear end opening, which faces the air inlet 2b, toward its tip, with the smallest inner diameter at the tip opening, which connects to the mixing flow path 2d. The mixing flow path 2d has an inner diameter slightly larger than that of the tip opening of the air flow path 2c, and is connected to the outlet 2a. Both flow paths are arranged coaxially with the outlet 2a.

[0021] The lid portion 22 of the nozzle 2 has a cylindrical shape that fits onto the spout 51 of the liquid storage container 5 and connects to it, and has a liquid inlet 2f on the inside that is inserted into the inner circumference of the spout 51, and the shaft portion 24 described below is integrally formed at the tip of this liquid inlet 2f.

[0022] The neck 23 of the nozzle 2 has a cylindrical shape with a smaller diameter than the lid 22 and is located between the lower peripheral surface of the main body 21 and the top of the lid 22. Its interior forms an opening that communicates with the liquid inlet 2f, and a liquid flow path 2g is provided at the center of the top surface of this opening, extending upward and connecting to the base portions that communicate with the mixing flow path 2d and air flow path 2c, intersecting at a substantially right angle. The inner diameter of this liquid flow path 2g gradually narrows from its lower opening surface facing the opening, with the smallest inner diameter being at its upper opening surface that connects to the mixing flow path 2d. The neck 23 is designed with a thickness such that its outer periphery is substantially flush with the tip surface of the main body 21 where the ejection port 2a is formed.

[0023] Furthermore, a hollow shaft 24, open at both the top and bottom, protrudes downward from the tip of liquid inlet 2f provided inside lid 22 of nozzle 2, parallel to the peripheral side surface of lid 22 from the location where liquid flow path 2g intersects with air flow path 2c. Specifically, as shown in Fig. 3, shaft 24 is provided with a length such that its lower end passes through spout 51 of liquid storage container 5 and reaches the interior of liquid storage container 5 when lid 22 is connected to spout 51 of liquid storage container 5. Furthermore, a plurality of holes 24a are formed in the lower end and outer peripheral surface of shaft 24.

[0024] The compressed air supply means 3 is an air delivery device configured in a gun shape, similar to the conventional example, and an air outlet 31 at the tip thereof is connected to the liquid ejection nozzle 2 so that when the trigger is pulled, compressed air delivered from a compressor (not shown) is supplied into the nozzle 2.

[0025] As shown in FIG. 4, a protrusion 32 is provided on the outer peripheral surface of the air outlet 31 of the compressed air supply means 3, and the end of this protrusion 32 is inserted into the air inlet 2b of the nozzle 2 so that the air outlet 31 of the compressed air supply means 3 is connected and fixed to the nozzle 2. 5(A), a groove 2h into which the protrusion 32 engages is formed at the end of the air inlet 2b of the nozzle 2. This groove 2h extends spirally from the end to the inner surface of the air inlet 2b, and as shown in the same figure (B), when connecting the air outlet 31 of the compressed air supply means 3 to the air inlet 2b of the nozzle 2, the protrusion 32 is engaged with the groove 2h, the air outlet 31 is inserted into the air inlet 2b, and the nozzle 2 or the compressed air supply means 3 is rotated to fit the protrusion 32 into the groove 2h and connect the air outlet 31 to the air inlet 2b, thereby fixing the nozzle 2 to the air outlet 31. Furthermore, when removing the nozzle 2 after using the liquid supply device 1, by rotating the nozzle 2 or the compressed air supply means 3 in the opposite direction to that described above, the engagement between the protrusion 32 and the groove portion 2h is released, and the nozzle 2 can be easily separated from the compressed air supply means 3.

[0026] As shown in Fig. 6, the liquid storage container 5 is a container made of a spout pouch, which stores a predetermined amount of liquid inside, and is provided so that the spout 51 provided in the center of the top edge can be connected to the lid 22 of the liquid-spewing nozzle 2 by removing the cap of the spout 51. As mentioned above, information such as a description of the stored liquid and instructions for handling the container is printed on the surface of the liquid storage container 5. A label with printed information may also be attached to the surface.

[0027] The container support 6 is formed using an elastic material such as a synthetic resin material, and as shown in Figures 1 and 7, consists of a ring portion 61 with a C-shaped cross section that is attached to the outer surface of the spout 51 of the liquid storage container 5, and leg portions 62, 62 that branch downward to the left and right on both the front and back of the ring portion 61.When the ring portion 61 is fitted onto the outer surface of the spout 51 of the liquid storage container 5, the leg portions 62, 62 cover the front and back of the liquid storage container 5 and press against both sides. The liquid storage container 5 made of a spout pouch is very flexible, so if the liquid supply device 1 is tilted or overturned during use, the spout pouch is likely to bend, crush, or otherwise deform. However, by placing the container support 6 over the spout pouch and pressing its surface with the legs 62, 62, the spout pouch retains its shape and is less likely to bend or crush, allowing the stored liquid to be sprayed out smoothly and continuously.

[0028] According to this embodiment, the liquid supply device 1 is constructed by connecting the spout 51 of the liquid storage container 5 to the lid portion 22 of the liquid ejection nozzle 2, and the air outlet 31 of the compressed air supply means 3 to the air inlet 2b. When compressed air is blown into the liquid ejection nozzle 2 by operating the compressed gas supply means 3, the downstream side of the liquid flow path 2g inside the nozzle becomes negative pressure, and the liquid in the liquid storage container 5 is sucked into the nozzle through the shaft portion 24 arranged inside the liquid storage container 5, mixed with the compressed air, and ejected from the outlet 2a at the tip of the nozzle.

[0029] The liquid storage container 5, which has a spout 51 connected to the lid 22 of the liquid-speed nozzle 2, has the shaft 24 protruding from the liquid inlet 2f of the liquid-speed nozzle 2 inserted into it. Therefore, even if the liquid-speed nozzle 2 is tilted or turned over while spraying liquid from the liquid-speed nozzle 2, the shaft 24 acts as an axis to support the inside of the container 5, maintaining the shape and posture of the container 5. Furthermore, since the container support 6 is placed over the outer surface of the liquid storage container 5 and the container surface is supported by legs 62, 62, the container 5 will not bend or break, and the stored liquid can be smoothly sucked up and delivered into the nozzle 2 through the shaft 24.

[0030] The illustrated embodiments of the present invention are merely examples, and the components constituting the liquid jetting nozzle and liquid supply tool of the present invention are not limited to these. [Explanation of symbols]

[0031] 1 liquid supply tool, 2 liquid jet nozzle, 3 compressed gas supply means, 4, 5 liquid storage container, 6 container support

Claims

1. a liquid ejection nozzle having a nozzle at its tip, an air inlet at the other end to which a compressed air supply means is connected, a lid portion fitted to the outer surface of a spout of a liquid storage container made of a spout pouch having a liquid stored on its outer peripheral surface, a liquid inlet on the inside of the lid portion, and an air flow path inside the air inlet, a liquid flow path leading to the liquid inlet and intersecting with the air flow path, and a mixing flow path leading from a portion where the liquid flow paths intersect to the ejection nozzle, The liquid inlet comprises a hollow shaft portion that is open at both the top and bottom ends and that protrudes parallel to the peripheral side surface of the lid portion from the point where the liquid flow path intersects with the air flow path, and the shaft portion is configured to be long enough to penetrate the spout of the liquid storage container and reach the inside of the liquid storage container when the lid portion is connected to the spout of the liquid storage container.

2. 2. The liquid jet nozzle according to claim 1, wherein a groove is provided from the end of the air inlet to its inner surface, into which a protrusion provided on the outer peripheral surface of the air jet port of the compressed air supply means is fitted.

3. The liquid ejection nozzle according to claim 1 or 2; a liquid storage container consisting of a spout pouch in which a liquid is stored; A liquid supplying device comprising: a compressed gas supplying means.

4. 4. The liquid supplying tool according to claim 3, further comprising a container support for supporting the outer surface of the liquid storage container.

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