JPH07543U - Atomized substance minute supply device - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide an excellent atomized substance minute amount supply device capable of supplying an atomized substance at a spray rate of less than 1 cc / min and capable of slightly moistening an object. A mist ejecting nozzle 22 capable of ejecting mist toward a wall surface 21b on the opposite side is attached to one wall surface 21a in the casing 21, and the mist ejecting nozzle on the wall surface 21b on the opposite side is attached. An opening 31 for partially passing the mist ejected from the mist ejecting nozzle 22 is formed at a position facing the ejection port of 22, and an edge portion of the opening 31 is formed.
An annular extending portion 32 protruding inside the casing 21 is provided, and an opening 33 for collecting excess liquid is formed at the bottom portion of the casing 21.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for supplying a small amount of mist, which is used when an object is slightly moistened to provide lubricity, or when an object is coated with a specific liquid.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, in order to impart lubricity to a workpiece or the like, to coat or to control the humidity, liquid has been sprayed in the form of mist and supplied to an object. For such mist spray, for example, the mist spray nozzle 5 shown in FIG. 2 is used. When compressed air is supplied to the nozzle 5 as indicated by an arrow P 1, a piston 7 held inside by a compression spring 6 is pushed upward in the drawing to communicate with a liquid supply pipe 8. 9 is opened, and the liquid is made into fine particles and ejected in the form of mist from the very narrow ejection ports of the tip nozzles 10 and 11 which are divided into left and right.

[0003]

[Problems to be solved by the device]

 However, because of the structure of the nozzle 5, a certain amount of liquid ejection pressure is required, and the amount of spray of the atomized body must be increased. Therefore, it cannot be used when it is desired to supply a very small amount of mist, or when the mist supply area is small and the mist is not desired to be applied to other parts. Therefore, in these cases, a special ultra-small atomizing nozzle is used, but it is the fact that this nozzle cannot supply the atomized body with an atomizing amount less than 1 cc / min.

The present invention has been made in view of such circumstances, and it is possible to supply the atomized body with an atomization rate of less than 1 cc / min, and to slightly moisten the object, which is excellent. It is an object of the present invention to provide a device for supplying a small amount of atomized body.

[0005]

Means for Solving the Problems In order to achieve the above object, a device for supplying a small amount of mist of the present invention is capable of injecting mist on one wall surface in a casing toward a wall surface on the opposite side. The mist injection nozzle is attached, and the mist ejected from the mist injection nozzle is partly placed on the opposite wall surface at a position facing the injection port of the mist injection nozzle. There is formed an opening through which the opening is formed, and an annular extension that projects inside the casing is provided at the edge of the opening, and an opening for collecting excess liquid is formed at the bottom of the casing. To take.

[0006]

[Action]

 That is, the device for supplying a small amount of mist of the present invention has a mist injection nozzle arranged in the casing, and the mist ejected from this nozzle is partially taken out from the opening formed in the wall surface of the casing. The other atomized material is collected from the bottom of the casing. Therefore, according to this invention, even if the spray amount from the spray nozzle of the mist is 1 cc / min or more, the amount of the mist sprayed outside the casing is reduced to a fraction thereof. Therefore, it is possible to easily supply an extremely small amount of atomized substance at less than 1 cc / min. Then, the mist that is obstructed by the casing wall surface and remains inside the casing is aggregated and left as it collects through the casing wall surface and is recovered from the excess liquid recovery opening. Absent. Moreover, since an annular extension that projects inward is provided at the edge of the wall opening through which the atomized body passes, excess liquid drops from the opening edge when the casing wall is pressed. There is no dripping and there is no obstruction to spraying the mist from the opening.

Next, this invention will be described in detail based on embodiments.

[0008]

【Example】

 FIG. 1 shows an embodiment of this invention. In the figure, reference numeral 21 is a substantially rectangular parallelepiped casing 21, and a micro spray nozzle (hereinafter simply referred to as "nozzle") 22 is attached to one wall surface 21a inside thereof. The nozzle 22 is composed of an inner cylinder 23 and an outer cylinder 24, both of which are integrated by screw connection. A liquid passage 25, which is connected to a liquid supply pipe (not shown), is formed in the inner cylinder 23 along the central axis of the inner cylinder 23, and the diameter is reduced toward the tip. At the tip end surface, a very small liquid ejection hole 26 is opened. An air supply pipe 30 is connected to one location on the peripheral wall of the outer cylinder 24, and the gap between the outer peripheral surface of the inner cylinder 23 and the inner peripheral surface of the outer cylinder 24 serves as an air passage 28. ing. Therefore, when a predetermined liquid and air are supplied to the nozzle 22, the liquid ejected from the liquid ejection port 26 is sucked by the air flow ejected from the surrounding annular gap and spreads in a conical shape. It is atomized and injected. Reference numeral 29 is an O-ring for preventing air leakage.

On the other hand, on the opposite side wall surface 21 b of the casing 21, an opening 31 is formed at a position facing the liquid discharge hole 26 of the nozzle 22. An annular extending portion 32 protruding inside the casing 21 is provided at the edge of the opening 31. An opening 33 for collecting excess liquid is formed at the bottom of the casing 21, and a recovery pipe 34 is connected to this portion.

In this device, when air and liquid are supplied to the nozzle 22 at the same time, a small amount of liquid discharged from the liquid discharge hole 26 is sucked up by the surrounding air jet flow and jetted in a mist state in a diffused state. It At this time, of the sprayed mist, only a part of the mist passing through the opening 31 is sprayed to the outside of the casing 21, and most of the other mist is the casing. It remains in 21. Then, the remaining mist adheres to the wall surface of the casing 21 and agglomerates with each other to form liquid drops, flows down the wall surface and flows into the recovery pipe 34 through the bottom opening 33, and if necessary, liquid After the cleaning process, it is returned to the liquid supply source or the liquid supply pipe halfway and reused.

Therefore, in the above apparatus, the amount of spray of the mist that passes through the wall surface opening 31 of the casing 21 out of the amount of spray from the nozzle 22 is set to, for example, 1/3 of the whole. In this case, if mist is sprayed from the nozzle 22 at a rate of, for example, 1 cc / min, the amount of spray from the opening 31 will be 0.33 cc / min, which is an extremely small amount of less than 1 cc / min that could not be achieved conventionally. Spraying can be realized. This makes it possible to meet demands such as when an extremely small amount of atomized substance needs to be supplied, or when the atomized substance supply area is very small and it is not necessary to apply the atomized substance to other parts. Wear.

By changing the diameter of the opening 31 or the distance between the opening 31 and the liquid discharge hole 26 at the tip of the nozzle 22, the spray amount of the mist passing through the opening 31 can be appropriately changed.

Further, the nozzle 22 for ejecting the atomized body is not limited to that of the above-mentioned embodiment, and various nozzles can be used. The liquid to be supplied to the nozzle 22 is not limited to a single liquid such as water, oil or emulsion, but two or more kinds of these liquids may be supplied in a mixed state to spray a mixed mist. But there is no problem.

[0014]

[Effect of device]

 As described above, the device for supplying a small amount of atomized particles according to the present invention has the atomized particle injection nozzle disposed in the casing, and the atomized particles injected from this nozzle are partially discharged from the opening formed in the wall surface of the casing. It is designed to be taken out and the other mist is collected from the bottom of the casing. Therefore, according to this invention, even if the spray amount from the spray nozzle of the mist is 1 cc / min or more, the amount of the mist sprayed outside the casing is reduced to a fraction thereof. Therefore, it is possible to easily supply an extremely small amount of atomized body at a rate of less than 1 cc / min. Then, the mist that is obstructed by the casing wall surface and remains inside the casing is agglomerated and drops, and is collected through the casing wall surface through the excess liquid recovery opening, resulting in waste of the liquid used. There is no. Moreover, since the ring-shaped extended portion that protrudes inward is provided at the edge of the wall surface opening through which the atomized body passes, excess droplets spill from the opening edge when the casing wall surface is covered. It does not drip and does not hinder the spray of mist from the opening.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embodiment of the present invention.

FIG. 2 is a cross-sectional view of an example of a conventional atomized body supply nozzle.

[Explanation of symbols]

 21 casing 21a, 21b wall surface 22 ultra-small spray nozzle 26 liquid discharge hole 31, 33 opening 32 extended portion

Claims (1)

[Scope of utility model registration request] 1. A mist ejecting nozzle capable of ejecting a mist toward a wall on the opposite side is attached to one wall in the casing, and the mist ejecting nozzle on the wall on the opposite side ejects the mist. An opening for partially passing the atomized body ejected from the atomized body ejecting nozzle is formed at a position facing the mouth, and an annular extension portion protruding to the inside of the casing is provided at the opening edge portion. And at the bottom of the casing,
An atomized-body minute-quantity supply device having an opening for collecting excess liquid.