JP2607321Y2 - Ejector - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ejector capable of foaming and discharging a liquid.

[0002]

2. Description of the Related Art Conventionally, there are a large number of foam ejectors, and as an example, there is a foam ejector described in Japanese Patent Publication No. 62-63535. FIG. 17 and FIG.
As shown in the figure, a trigger type ejector provided with a nozzle 26 at a front portion of the ejector body 1, and in front of the nozzle 26,
A cylindrical body 35 surrounding the front of the nozzle 26 is provided, and a plurality of rod-shaped striking walls 40 project from the inner surface of the cylindrical body 35,
The rod-shaped striking wall 40 is integrally connected at the center of the cylindrical body 35.

[0003] When the foam ejector operates a trigger (not shown) to vortex the liquid from the nozzle 26 and eject the liquid, the central part of the spray particles is connected to the central connecting part of the rod-shaped collision wall 40. A collision occurs, and a part of the circumference of the spray particles collides with the rod-shaped collision wall 40 and scatters. Then, the liquid scattered by the collision is mixed with the spray particles that do not collide with the rod-shaped collision wall 40 and is mixed with the air sucked from the air inflow passage 36 to be discharged as fine bubbles from the cavity 43. .

[0004]

The above-mentioned conventional foam ejector is an excellent foam ejector capable of sufficiently foaming and ejecting a liquid to be ejected. However, the foam ejector has a small area in which the liquid can be ejected, and the ejection momentum is reduced, so that the foam ejects from the tip of the ejector.

[0005] The present invention has been made in view of the above-mentioned problem, and enables fine bubbles to be ejected over a wide area.
A technical object is to make an ejector capable of preventing even bubbles from the tip of the ejector.

[0006]

According to the present invention, a tubular body 35 surrounding the front of the nozzle 26 is provided in front of the nozzle 26, and the center of the tubular body 35 coincides with the center of the nozzle 26. And the outer peripheral edge of the cylindrical body 35
The air is taken in from the front end of the cylindrical body 35 before the nozzle 26.
And an air inflow passage 36 for supplying air to the cylindrical body 3.
5, a plurality of rod-shaped impact walls 40 protruding toward the center of the cylindrical body 35 are provided, and the rod-shaped impact walls 40 are formed to have a length not reaching the center of the cylindrical body 35, and A through-hole portion 42 is formed between the tip portions of the rod-shaped impact walls 40,
The rod-shaped collision wall 40 is formed by particles ejected from the nozzle 26.
Before reaching the base of the rod-shaped impact wall 40, the inner surface of the cylindrical body 35 is impacted.
An ejector characterized by being arranged so that it does not collide .

[0007]

According to the present invention, when the liquid is ejected from the nozzle 26 of the liquid ejection port 25, the ejected particles collide with the rod-shaped collision wall 40 and are scattered. The spray particles scattered by the collision,
Along with mixing with other spray particles, it mixes with the air sucked in from the air inflow passage 36 to form fine bubbles, and is ejected from the hollow space 43 and the through-hole portion 42 to the outside of the cylindrical body 35.

[0008] The spray particles ejected from the nozzle 26 reach the base of the rod-shaped impact wall 40 before reaching the base.
Since it does not collide with the inner surface of the cylindrical body 35 ,
It is not greatly decelerated by the collision with the cylindrical body 35,
The ejected particles passing through the periphery of the cylindrical body 35 are diffused and ejected in a trumpet shape.

The ejected particles passing through the central portion of the cylindrical body 35 advance straight and vigorously without being hindered by the rod-shaped collision wall 40, thereby preventing the bubble from being generated at the central portion of the cylindrical body 35. . The air inflow path 36 is provided at the outer peripheral edge of the cylindrical body 35.
Is provided to take in air from the front end of the cylindrical body 35
There is no air inlet on the peripheral wall of the cylindrical body 35
In the event that liquid dripping occurs in the cylindrical body 35,
Also, the dripping liquid is held in the cylindrical body 35,
And almost no.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 8 are views for explaining one embodiment of the present invention. As shown in FIG. 4, the ejector of this embodiment includes an ejector body 1 which can be mounted on a container, a head 16 provided with a liquid ejecting nozzle at a front portion, and an ejector which pressurizes the liquid with a trigger 2. is there. The mechanism for pressurizing the liquid of the ejector main body 1 of this embodiment is conventionally known, and a detailed description of the structure will be omitted.

As shown in FIG. 1, the ejector of this embodiment has a plate 3 made of synthetic resin attached to the front of an ejector body 1, and the plate 3 has a cylindrical shape. A projection 4 is provided, and an annular projection for fitting is provided on the outer peripheral surface of the cylindrical projection 4. The plate-shaped body 3 has a columnar portion 8 projecting from the center of the cylindrical protrusion 4 at a position slightly shorter than the cylindrical protrusion 4.

Further, the plate-like body 3 inside the cylindrical protrusion 4 is provided with a liquid discharge passage 5 communicating with a discharge port of a pump mechanism (not shown). As shown in FIG. 1 to FIG. 3, a longitudinal groove-shaped straight flow channel 10 is provided on the outer peripheral portion of the distal end of the columnar portion 8, and a swirl flow channel is provided outside the straight flow channel 10. A channel 9 is provided.

On the outer peripheral portion of the tip of the columnar portion 8, the position where the straight flow channel 10 and the swirl flow channel 9 are provided is shifted 60 degrees in the circumferential direction from the portion where the straight flow channel 10 and the swirl flow channel 9 are provided. Channels 9 are provided facing each other. A head 16 rotatably fitted to the columnar portion 8 is made of synthetic resin, and a top plate 17 is provided at a position slightly closer to the front than the center, and is directed rearward from the top plate 17. And a tubular portion 19 is provided,
On the inner surface of the cylindrical portion 19, there is provided an annular recess into which an annular convex portion provided on the outer peripheral surface of the cylindrical projecting portion 4 is fitted.
An annular groove 20 is provided inside the base of the tubular portion 19.

A cylindrical portion 24 is provided on the top plate 17 inside the cylindrical portion 19 toward the rear, and the cylindrical portion 24 is rotatably fitted to the columnar portion 8 so as to be rotatable. The inside of the cylindrical portion 24 is shown in FIGS.
As shown in FIG. 6, a liquid passage 27 communicating with the liquid discharge passage 5 of the plate 3 is provided. And the cylindrical portion 24
A nozzle 26 of a liquid ejection port 25 is provided at the center of the top plate 17 inside the top plate 17.
As shown in FIG. 3, FIG. 5, FIG. 6, and FIG. 14, a swirling flow ejection path 28 and a straight flow ejection path 29 are provided to face each other.

At the position shown in FIG. 1 and FIG. 3, the top plate 1 is inserted into the swirl flow channel 9 and the straight flow channel 10 of the columnar portion 8.
The swirling flow ejection path 28 and the straight flow ejection path 29 on the rear surface 7 are formed so as to communicate with each other. The swirl flow path 9, the swirl flow ejection path 28 communicating with the swirl flow path 9, the straight flow path 10, and the linear flow ejection path 29 communicating with the straight flow path 10. The nozzle 26 forms the liquid ejection port 25.

Here, the jetting device has a jetting angle θ of the spray particles.
And the inner diameter D _{1 of the} nozzle 26, the inner diameter D ₂ of the cylindrical body 35,
And the distance L between the rod-shaped striking wall 40 and the rod-shaped striking wall 40. θ ≦ 2 × tan ⁻¹ ((D ₂ −D ₁ ) / 2L) Equation 1 Further, from the position shown in FIGS.
When the head 16 and the head 16 are relatively rotated by 60 degrees, only the swirling flow passage 9 of the columnar portion 8 is formed in the swirling flow ejection passage 28 on the rear surface of the top plate 17 as shown in FIGS. It is formed so as to communicate.

A circular recess 18 whose center coincides with the center of the nozzle 26 is provided at the front of the top plate 17 of the head 16, and an annular recess is provided on the inner surface of the peripheral wall of the circular recess 18. is there. A cylindrical body 35 made of synthetic resin is fitted into the circular concave portion 18, and an annular convex portion formed on the outer peripheral surface of the cylindrical body 35 engages with the circular concave portion of the circular concave portion 18, A cylindrical body 35 is fitted into the circular recess 18 and the cylindrical body 3
5 surrounds the front of the nozzle 26.

As shown in FIGS. 7 and 8, the cylindrical body 35 is provided with an air inflow path 36 provided in the outer peripheral edge in a vertical direction . From the front end
The intake air is supplied to the front of the nozzle 26. Also,
On the inner surface of the end portion of the cylindrical body 35, five rod-shaped impact walls 40 protruding toward the center of the cylindrical body 35 are provided. The rod-shaped impact wall 40 is formed to have a length that does not reach the center of the cylindrical body 35, and between the tip portions of the five rod-shaped impact walls 40, the center of the cylindrical body 35 is formed. A through hole 42 is formed at the position.

The cylindrical portion 8 and the head 16 shown in FIGS. 5 and 6 are the same as the cylindrical portion 8 and the head 16 shown in FIGS.
However, in FIG. 1, the swirl flow passage 9 and the straight flow passage 10 of the columnar portion 8 communicate with the swirl flow outlet 28 and the straight flow outlet 29 of the head 16, respectively. In FIG. 5, only the swirling flow passage 9 of the cylindrical portion 8 and the swirling flow ejection passage 28 of the head 16 are illustrated. The cylindrical part 8 and the head 16 are relatively rotated at a position where they communicate with each other. When the swirl flow channel 9 and the straight flow channel 10 provided in the columnar portion 8 are provided at the same position in the circumferential direction of the columnar portion 8, the straight flow channel 10 is formed as shown in FIGS. Can be formed smaller or larger than that shown in FIG.

Next, a description will be given of a different embodiment of the cylindrical body 35, but the same portions are denoted by the same reference numerals and description thereof is omitted. FIGS. 9 and 10 show that the rod-shaped collision wall 40 is
Is provided at a position slightly closer to the rear than the end. 11 and 12 show three pairs of rod-shaped collision walls 40, one of which is formed long and the other is short.

FIG. 13 and FIG. 14 show a case in which six rod-like impact walls 40 of the same length are provided. FIG.
0 is provided. FIG. 16 shows a configuration in which three bar-shaped opposing walls 40 are provided. When the rotating positions of the head 16 and the columnar portion 8 are set to the positions shown in FIGS. 1 and 3, the ejector of the embodiment shown in FIGS. 1 to 8 has a swirl flow path provided in the columnar portion 8. 9 communicates with the swirl flow ejection path 28 of the head 16, and the straight flow passage 10 provided in the columnar portion 8 communicates with the straight flow ejection path 29 of the head 16.

Then, by operating the trigger 2 to operate a pump mechanism (not shown), the liquid is supplied from the liquid discharge passage 5 to the liquid passage 2.
7 and sent to the swirl flow channel 9 and the straight flow channel 10,
The liquid is sent from the swirl flow channel 9 to the swirl flow ejection passage 28 provided in the head 16, and the liquid flows from the straight flow channel 10 to the head 16.
The liquid is sent to the straight flow jetting path 29 provided in the above. Then, a swirl flow is ejected from the swirl flow ejection path 28, but a linear flow is ejected from the linear flow ejection path 29, and the spray particles ejected from the nozzle 26 have a reduced swirl speed , as shown in FIG. diffusion
Angle becomes smaller. That is, since the spray particles ejected from the nozzle 26 do not collide with the inner surface of the cylindrical body 35 before reaching the base of the rod-shaped collision wall 40, the foam to be ejected is in the cylindrical body 3.
The spray particles passing through the periphery of the cylindrical body 35 are not decelerated by the collision with the cylinder 5 and are diffused and ejected in a trumpet shape.

The spray flow that has flown to the center of the cylindrical body 35 vigorously advances through the through-hole 42 without being hindered by the rod-shaped striking wall 40, and the advancing speed of the bubbles traveling through the void 43. Accelerates and blows out bubbles vigorously and does not generate any bubbles. Then, the rotational positions of the head 16 and the columnar portion 8 are shown in FIG.
6, only the swirl flow path 9 provided in the columnar portion 8 communicates with the swirl flow ejection path 28 of the head 16.

Then, the spray flow spouted from the nozzle 26 has a large swirling speed and a large diffusion angle as shown in FIG. 5, and when it comes into direct collision with the inner surface of the cylindrical body 35, the cylindrical body 35 As shown in FIG. 5, the foam that collides with the inner surface of the cylinder 35 moves in parallel with the center line of the cylinder 35, and is ejected from the cylinder 35 as a rod. Therefore, bubbles can be ejected in a narrow range. In the present embodiment, such a usage is also possible. In addition, the air inflow path 36
Is provided on the outer peripheral edge of the cylindrical body 35, and the cylindrical body 35
Air is taken in from the front end of the cylindrical body 35.
Has no air inlet, so it should be
Even if dripping occurs, the dripping liquid is retained in the cylindrical body 35.
It is held and rarely hangs out.

[0025]

According to the present invention, a plurality of rod-shaped collision walls 40 provided on the cylindrical body 35 are formed so as to have a length not reaching the center of the cylindrical body 35, and the tip ends of the plurality of rod-shaped collision walls 40 are formed. A through-hole portion 42 is formed between the portions, and the rod-shaped impact wall 40 is
Before the particles ejected from the cylinder reach the base of the rod-shaped collision wall 40,
It is arranged so as not to collide with the inner surface of the body 35 .

Therefore, the spray particles ejected from the nozzle 26 are diffused and ejected in a trumpet shape in front of the cylindrical body 35, and can eject bubbles in a wide range. Further, the spray particles ejected from the central portion of the tubular body 35 have no obstacle to the progress, and are ejected vigorously to prevent the occurrence of the foaming. Further, the air inflow path 36 extends from the front end of the cylindrical body 35.
Air is taken in, and an air flow
Since the inlet is not open, the liquid in the tubular body 35 should be
Even if dripping occurs, the dripping liquid is retained in the cylindrical body 35
And it hardly hangs out.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part of an embodiment of the present invention, in which a head and a columnar portion are located at positions where both a swirling flow and a straight flow can be ejected.

FIG. 2 is a perspective view of the columnar portion of the embodiment of the present invention.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a side view of one embodiment of the present invention.

FIG. 5 is a cross-sectional view of a main part of one embodiment of the present invention, in which a head and a columnar portion are located at positions where only a swirling flow can be ejected.

FIG. 6 is a sectional view taken along line BB of FIG. 5;

FIG. 7 is a front view of the tubular body according to the embodiment of the present invention;

FIG. 8 is a half sectional view of a tubular body according to an embodiment of the present invention.

FIG. 9 is a front view of a second embodiment of the tubular body of the present invention.

FIG. 10 is a half sectional view of a second embodiment of the tubular body of the present invention.

FIG. 11 is a front view of a third embodiment of the tubular body of the present invention.

FIG. 12 is a half sectional view of a third embodiment of the tubular body of the present invention.

FIG. 13 is a front view of the head of the fourth embodiment of the tubular body of the present invention.

FIG. 14 is a schematic cross-sectional view of a head of a fourth embodiment of the tubular body of the present invention.

FIG. 15 is a front view of the head of the fifth embodiment of the tubular body of the present invention.

FIG. 16 is a front view of the head of the sixth embodiment of the tubular body of the present invention.

FIG. 17 is a sectional view of a main part of a conventional example.

FIG. 18 is a front view of a main part of a conventional example.

[Explanation of symbols]

25 Liquid jetting port 26 Nozzle 28 Swirling flow jetting path 29 Linear flow jetting path 35 Cylindrical body 36 Air inflow path 40 Bar-shaped collision wall 42 Through-hole portion θ Jetting angle D ₂ Inner diameter of nozzle D ₁ Inner diameter of cylindrical body L Distance between the nozzle and the bar

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Ryuji Tazaki 3-2-6 Oshima, Koto-ku, Tokyo Inside Yoshino Kogyo Co., Ltd. (56) References JP-A-63-49269 (JP, A) JP-A Sho 56-67551 (JP, A) Japanese Utility Model 1-101662 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] In front of 1. A nozzle 26, the cylindrical body 35 surrounding the front of the nozzle 26 is provided, the cylindrical body 35 is centered provided so as to coincide with the center of the nozzle 26, and the cylinder Air from the front end of the tubular body 35 to the outer peripheral edge of the tubular body 35
Air inflow passage 36 which supplies air in front of nozzle 26
And a plurality of rod-shaped striking walls 40 projecting toward the center of the cylindrical body 35 on the inner surface of the cylindrical body 35, and the rod-shaped striking wall 40 has a length that does not reach the center of the cylindrical body 35. Formed between the end portions of the plurality of rod-shaped striking walls 40,
A penetrating hole 42 is formed, and the rod-shaped striking wall 40 is
Particles ejected from 26 reach the base of rod-shaped impact wall 40
An ejector characterized in that the ejector is arranged so as not to collide with the inner surface of the tubular body 35 before .