WO2004060569A1

WO2004060569A1 - Nozzle and ejector

Info

Publication number: WO2004060569A1
Application number: PCT/JP2002/013844
Authority: WO
Inventors: Kaga Hasegawa
Original assignee: Need Brain Co., Ltd.
Priority date: 2002-12-27
Filing date: 2002-12-27
Publication date: 2004-07-22
Also published as: CN1741857A; EP1579919A1; AU2002359945A1; CN100464865C

Abstract

A nozzle and an ejector the entirety of which are made compact. The nozzle comprises an outer nozzle (13) and an inner nozzle (14) formed of a flexible tubular member and having a free end at the forward end part. The outer nozzle (13) has a base end communicating with a pressure gas supply (2) and a forward end provided with a channel (15) having a gas jet opening. The inner nozzle (14) has a base end communicating with a sub-medium supply and a forward end provided with a passage (1) having a sub-medium jet opening. The sub-medium jet opening is disposed in a negative pressure area in the vicinity of the gas jet opening. When gas is jetted, forward part of inner and outer nozzles performs swing motion and the sub-medium is sucked through the passage and jetted under a state mixed with the gas.

Description

Specification

Nozzle and ejection device

Technical field

The present invention relates to a compact and highly operable fluid ejection nozzle and a device for ejecting two fluids required for cleaning and painting, for example, a gas and a liquid while simultaneously rotating and diffusing them into a certain area and ejecting them simultaneously. Things.

Background art

For example, an ejection device for a fluid or the like used in a cleaning device ejects a gas such as compressed air from an ejection port of an ejection nozzle to remove dust and dirt from a portion to be cleaned. In addition, a device for ejecting a fluid or the like used in a washing device is configured to wash a dirt on a portion to be washed by ejecting a liquid such as water or a washing liquid or a powdery or granular abrasive from an ejection nozzle through the pressure of high-pressure air. Remove and remove.

Therefore, the conventional ejection nozzle and ejection device for fluid or the like adopt a structure in which the ejection fluid or the like is ejected from the upstream side of the nozzle by the pressure of high-pressure air.

This structure is disclosed in Japanese Unexamined Patent Application Publication No. 11-123500, in which the ejection nozzle is formed of a flexible cylinder so that the nozzle is swirled during ejection to rotate and diffuse the ejection fluid. The same applies to a nozzle having a different configuration.

The cleaning device disclosed in Japanese Patent Application Laid-Open No. 2000-510800 uses a jet nozzle having the above-described peculiar configuration that makes a revolving motion at the time of jetting a fluid due to the flexibility of the material itself. As shown schematically in Fig. 5, this cleaning device connects a water supply source A, a compressed air supply source B, a detergent supply source C, and a jet nozzle E, and a jet nozzle E with each of the supply sources A to C. Pipeline F (consisting of an upstream branch pipeline F1 to F3 and a downstream main pipeline F4). In this device, compressed air is supplied from the compressed air supply source B to the water supply source A, or compressed air is supplied from the compressed air supply source B to the detergent supply source C, and is supplied from each branch line F1 to F3. By operating the switching means D provided at the connection with the main pipeline F4, water, detergent or compressed air is ejected from the ejection nozzle F.

As shown in the above-mentioned Japanese Patent Application Laid-Open No. 2000-518, the conventional apparatus sends compressed air to supply sources A and C of jet fluid such as water and detergent, respectively. Pressurize and supply to jet nozzle E. Therefore, a powerful compressed air supply B Must be used, the water supply source A and the detergent supply source C become large, and the entire equipment becomes large.

For the ejection nozzle mechanism, a gun type equipped with the above-mentioned switching means is used in consideration of operability (see reference numeral E 'in Fig. 5), but this mechanism E' has three conduits. Since F1 to F3 are connected, these conduits hinder the work such as cleaning with the nozzle E.

Furthermore, changing the jet fluid to a different liquid, etc., requires replacing the tanks that are the source A and C, which is troublesome.

An object of the present invention is to provide a nozzle and a jetting device which can not only make the entire device compact, but also can easily operate the jetting nozzle and easily exchange the jetting fluid.

Disclosure of the invention

A nozzle according to the present invention includes an outer nozzle formed of a flexible tube and having a free end at a tip end, and a tube inserted into the outer nozzle and having the same flexibility as the outer nozzle. And an inner nozzle having a free end at the tip. The outer nozzle has a flow path having a gas outlet at the distal end between the inner nozzle and an outer surface of the inner nozzle, the proximal end communicating with the pressurized gas supply source. The inner nozzle communicates with a secondary medium supply source for jetting, which has a base end consisting of liquid or powdery granules or a mixture of liquid and powdery granules, while having a secondary medium outlet at the tip. Having. The outlet for the secondary medium is located in a negative pressure region formed near the gas outlet when the gas is ejected from the gas outlet. In addition, as the gas is ejected from the ejection port through the flow path, at least the front part of the outer nozzle and the inner nozzle including the two ejection ports rotates and at the same time, the gas is supplied through the passage. The secondary medium is sucked from the source, and is ejected from the outlet of the secondary medium in a mixed state with the gas.

In addition, an ejection device according to the present invention is an ejection device using the nozzle, wherein the nozzle is further provided with a pressurized gas supply source, and an ejection device comprising a liquid or a granular material or a mixture of a liquid and a granular material. A secondary medium supply.

It is desirable to mount a balancer on the outer peripheral surface of the outer nozzle to assist the swiveling motion of the outer nozzle and the inner nozzle. The balancer may be singular or A plurality of nozzles are attached at appropriate intervals in the length direction of the nozzle.

Further, it is preferable that a restricting member for restricting the turning movement of the outer nozzle and the inner nozzle be provided outside the outer nozzle. The restricting member may be a front-opening flared type surrounding the entire swirling portion of the outer nozzle and the inner nozzle, or a ring member partially surrounding the swirling portion of the outer nozzle. A brush may be attached to the tip of the regulating member as necessary, and the brush may be moved by colliding the bristles of the brush with the swirling flow.

The outer nozzle and the inner nozzle are formed of a flexible synthetic resin or rubber tube material. The outer nozzle and the inner nozzle may be formed of flexible materials that are different from each other.

The pressurized gas and secondary medium for jetting are appropriately selected according to the purpose of use of the nozzle / jetting device. For example, the pressurized gas is compressed air that is pumped from a supply source such as a compressor, and the secondary medium is a cleaning liquid or an abrasive or paint. The cleaning liquid may be a mixture of a detergent and an abrasive.

The compressor or the aerosol-type compressed air supply source and the gas flow path of the nozzle are communicated via the first communication path. The first communication path is provided with opening / closing means for the communication path. The opening / closing means and the nozzle are desirably integrated into a gun-type ejection nozzle mechanism.

The secondary medium supply source is a storage container for a secondary medium such as a cleaning liquid, and the storage container and the internal passage for the secondary medium of the inner nozzle are openably and closably communicated via a second communication passage. Is good. The storage container is detachably connected to, for example, a gun-type ejection nozzle mechanism, and is connected to the secondary medium internal passage of the inner nozzle via the second communication passage. In the nozzle and the jetting device of the present invention, the pressurized gas is jetted from the first communication passage, through the flow path of the outer nozzle, and from the gas outlet at the distal end. The secondary medium is ejected from the secondary medium outlet at the distal end through the inner passage of the inner pipe. The secondary medium is not sent to the supply side of the secondary medium by applying a positive pressure as in the past, but is sent by the negative pressure generated near the gas outlet as the gas is ejected. Automatically extracted from the The sucked secondary medium is discharged forward by the swirling motion of the outer nozzle and the inner nozzle, riding on the flow of gas that is diffusely jetted out. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a schematic view showing a partial section of a cleaning fluid ejection device according to an embodiment of the present invention. FIG. 2 is an enlarged sectional view showing a part of the nozzle of FIG. FIG. 3 is a schematic view showing, in partial cross section, a fluid ejection device according to another embodiment of the present invention. FIG. 4 is a conceptual configuration diagram of a fluid ejection device according to still another embodiment of the present invention. FIG. 5 is a conceptual configuration diagram showing an example of a conventional cleaning device.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

The fluid ejection device includes a fluid ejection gun 1, a pressurized air supply source 2, and a cleaning liquid storage container 3.

The fluid ejection gun 1 is configured by attaching a nozzle 6 to the tip of a gun body 4 via a connector 5. The connecting body 5 has a passage 7 through which gas can pass. A connection hole 8 communicating with the passage 7 is provided in a lower portion of the peripheral surface of the connecting body 5. The cleaning liquid storage container 3 is detachably connected to the connection hole 8 via an on-off valve operating member 9.

At the front end of the connecting body 5, a mounting portion 11 of the nozzle 6 is fixed. The nozzle mounting portion 11 has a through hole 12 inside. The base end of the outer nozzle 13 is fixed to the front end of the nozzle mounting portion 11, and the inner nozzle 14 passes through the inside of the outer nozzle 13. The gap formed between the inner surface of the outer nozzle 13 and the outer surface of the inner nozzle 14 forms a gas flow path 15. The flow path 15 communicates from the through path 12 of the nozzle mounting section 11 to the through path 7 of the connector ⁵ . The inner nose 14 extends from the through hole 12 of the nozzle mounting portion 11 into the passage 7 of the connecting body 5 and then to the connecting hole 8 of the connecting body 5, and the opening / closing valve operating member. Connected to 9. The passage formed inside the inner nozzle 14 forms a passage 16 for the cleaning liquid.

The entire outer nozzle 13 is made of a tube made of a flexible synthetic resin such as nylon, Teflon, polyurethane, or polypropylene. The inner nozzle 14 also has at least a portion disposed in the outer nozzle 13 made of a similar synthetic resin tube. In the outer nozzle 13 and the inner nozzle 14, the gas passes through the flow path 15 between the inner nozzle 14 and the outer nozzle 13, and the gas is jetted from the outlet 15 a at the end of the flow path 15. Due to the flexibility of the material, the front end of the outer nozzle 13 The other part performs a swiveling motion.

The jet 16a at the end of the passage 16 of the inner nozzle 14 is slightly outside the jet 15a at the end of the flow path 15 of the outer nozzle 13, i.e., the gas flows from the flow path 15 above. Protrudes into a negative pressure region formed near the jet port when jetted.

A plurality of balancers 17 made of synthetic resin are attached to the outer periphery of the outer nozzle 13 at the tip of the outer nozzle 13 and at predetermined positions spaced apart in the length direction. The balancer 17 applies an inertial force to the above-described swiveling motion of the nozzle 6 to efficiently perform swirling. Outside the outer nozzle 13, a trumpet-shaped regulating guide 18 having a larger diameter as it goes forward is attached. The open end 18 a of the restriction guide 18 projects forward from the nozzle 6. The restriction guide 18 is formed of a synthetic resin material, and causes the nozzle 6 to perform a swiveling motion along its inner peripheral surface. Thereby, the movement of the nozzle 6 is restricted to a certain range, and at the same time, a gas or the like is ejected along the opening end 18a of the restriction guide 18.

An air compressor is used as the pressurized air supply source 2, and is connected to the gun body 4 via a supply pipe 19. The gun body 4 sends the pressurized air from the pressurized air supply source 2 to the passage 7 of the connecting body 5 when the trigger lever 20 is pulled. The sent pressurized air enters the passage 15 of the outer nozzle 13 from the passage 7 through the through hole 12. While the trigger 20 is being pulled, the supply line 19 and the passage 7 as well as the passage 15 of the through-hole 12 and the outer nozzle 13 are kept in communication, and the trigger 20 is returned to supply. The connection between the pipeline 19 and the passage 7 is blocked.

The detergent liquid storage container 3 is detachably mounted upstream of the on-off valve operating member 9 connected to the connection hole 8 of the connecting body 5. The storage container 3 stores the detergent liquid therein without applying pressure. The storage container 3 has an inlet pipe 21 extending toward the container bottom. The insertion pipe 21 communicates with the base end of the inner nozzle 14 via the on-off valve operating member 9.

In the drawing, reference numeral 10 denotes an operation lever of the on-off valve operating member 9, 22 denotes a hole formed at a required position of the regulation guide 18, 23 denotes a lid of the storage container 3, and 24 denotes a container body. . As a mechanism for attaching and detaching the storage container 3, an appropriate means such as a screw type or a fitting type is adopted. The usage state of the fluid ejection device having the above configuration will be described. First, when the pressurized air and detergent liquid are jetted together with this device, the detergent liquid storage container 3 is installed, the operating lever 10 of the on-off valve operating member 9 is set to the open position and the inlet pipe 21 is connected to the inlet pipe 21. The inner nozzle 14 is in communication. .

Next, when the compressor as the pressurized air supply source 2 is driven and the trigger 20 of the gun body 4 is pulled, the compressed air from the compressor 2 passes through the supply pipe 19, the passage 7, the through-hole 12, and the outer nozzle 1 3 flows into the flow path 15 (these series of paths through which the air flows form the first communication path), and is vigorously ejected from the flow outlet 15 a at the end of the flow path 15. At this time, the front portions of the outer nozzle 13 and the inner nozzle 14 are both formed of a flexible synthetic resin material, and the base portion is fixed, while the tip portion is a free end. Therefore, the swiveling motion is performed such that the free end having the spout 15 a becomes rampant. This swirling motion is regulated in a radially constant range by a regulation guide 18 provided outside the outer nozzle 13. Along the inner surface of the regulation guide 18, the nozzle 6 makes a regular swiveling movement. In addition, the balancer 17 attached around the outer nozzle 13 makes the turning motion of the nozzle 6 stable.

When air is vigorously jetted from the flow path 15 of the outer nozzle 13, a negative pressure acts on the ejection port 16 a of the inner passage 16 of the inner nozzle 14, and the inner flow path of the inner nozzle 14 The detergent liquid in the detergent container is sucked up from 15 and the insertion pipe 21 (this path through which the detergent liquid flows forms a second communication passage). Then, the detergent liquid is ejected in the form of a mist in a state of being mixed with the air on the jet air from the outer nozzle 13. As described above, since the outer nozzle 13 and the inner nozzle 14 eject the air and the detergent liquid while performing a swirling motion, these mixed fluids form a swirl flow with an increased momentum, and form a swirl flow on the surface to be cleaned. Collide as if rubbing. The swirling motion of the nozzle 6 is regulated to a certain range by the regulation guide 18 and does not waste the ejection energy, so that a stronger collision force or cleaning power can be obtained as compared with the one simply ejected forward from the fixed nozzle. Can be

In the fluid ejection gun, since only a single supply line 19 is connected to the gun body 4, the pipe does not obstruct the ejection operation. In addition, since the detergent storage container 3 is located between the gun body 4 and the nozzle 6, the operation balance of the gun body 4 is improved.

When changing or refilling the detergent solution, remove reservoir 3 and use a different detergent solution. Or just install the reservoir 3 for the replenished detergent solution!

The hole 22 of the regulation guide 18 takes in outside air and blows it out along the inner surface of the regulation guide 18, so that when the nozzle is swirled, the hole 22 extends from the hole 22 to the tip of the regulation guide 18. A flowing induced flow is created.

When the operating lever 10 of the on-off valve operating member 9 is closed and the trigger lever 120 of the gun body 4 is pulled, the compressed air sent from the compressor 2 passes through the passage 7 and the through hole as described above. After passing through 12, it passes through the flow path 15 of the outer nozzle 13, and is ejected from the ejection port 15 a at the tip. On the other hand, the detergent liquid insertion pipe 21 is shut off from the internal passage 16 of the inner nozzle 14 by the on-off valve operating member 9. Therefore, the outer nozzle 13 and the inner nozzle 14 emit a swirling flow of only air while performing a swirling motion in the same manner as described above.

This swirling flow of air alone is effective for blowing off dust and light attachments as a pretreatment for cleaning. It is also useful for drying the target surface after spraying the cleaning liquid or applying paint.

A fluid ejection device according to another embodiment of the present invention will be described with reference to FIG. This device has the same basic structure as the fluid ejection device shown in Fig. 1, and additionally has an annular brush 30 attached to the open end 18a of the regulating guide 18 provided on the nozzle 6. is there. The annular brush 30 has its bristle 31 implanted along the axial direction of the regulating guide 18. In FIG. 2, the same members as those in the apparatus in FIG. 1 are denoted by the same reference numerals.

The mixed fluid of air and cleaning liquid ejected from the inner nozzle 14 and the outer nozzle 13 rotating along the inner circumference of the regulating guide 18 flows from the open end 18 a along the inner circumferential surface of the regulating guide 18. It is ejected in the diameter expansion direction. Each bristle 31 of the annular brush 30 extending along the axial direction of the regulating guide 18 is bent in the radial direction when colliding with the mixed fluid ejected while turning, and returns when deviating from the collision. I do. Therefore, the annular brush 30 also turns the position of the bristles 31 that are bent in the direction in which the diameter gradually increases with the swirling flow. By rotating the position of the bristles 31 that are bent in the radial direction, the brush 30 is applied to the surface to be cleaned, and the swirling motion of the brush 30 and the swirling motion of the jetted mixed fluid cause the surface to be cleaned. Will be washed evenly. In the two embodiments described above, the cleaning liquid is used as the medium ejected from the inner nozzle. However, the present invention is not limited to this, and powder or granules having a diameter capable of passing through the inner passage of the inner nozzle are used. You may use the abrasive material which did the following. The abrasive is used alone or in a mixture with a liquid. The abrasive material is also stored in the storage container and is detachably attached to the gun body of the fluid ejection gun.

In the present invention, an aerosol-type compressed air supply container can be used as a supply source of the pressurized gas. In this case, the connecting body 5 in the embodiment of FIGS. 1 and 3 is connected to the nozzle body above the compressed air supply container, and the nozzle 6 and the secondary medium storage container 3 according to the present invention are fixed to this connecting body 5. . Figure 4 shows the conceptual configuration diagram. 1 and 3 are denoted by the same reference numerals, and description thereof will be omitted. Note that a small storage container 3 is used.

In this embodiment, no fluid injection gun is used. An aerosol type compressed air supply container 41 having a nozzle body 40 replaces this. It is more compact than those using a compressor or fluid injection gun.

Although not shown, in the present invention, by providing a bypass in the middle of the flow path of the outer nozzle and providing a switching valve to the bypass side, it is possible to apply suction force to the ejection port of the outer nozzle. It is also possible to provide a second bypass in the middle of the flow path of the outer nozzle, and to collect dust and dust sucked from the outer nozzle ejection port by inviting it to the second bypass side.

The restricting guide member is a member that restricts the swirling motion of the front portion of the nozzle to a certain range in the radial direction, and is configured by, for example, a member that covers the outside of the outer ring in a ring shape with a required gap. You can also.

Industrial applicability

The nozzle according to the present invention allows the gas from the pressurized gas supply source to pass through the flow path of the outer nozzle, and the secondary pressure from the secondary medium supply source through the internal passage of the inner nozzle due to the negative pressure when the gas is ejected from the gas outlet. Since the medium is sucked and the secondary medium is ejected in a mixed state with the gas, the secondary medium can be ejected from the nozzle without pressurizing. In addition, the secondary medium can be atomized and mixed into the gas by the jetting power of the gas and diffused and released.

When the gas passes through the flow path of the outer nozzle, the outer nozzle and the inner nozzle rotate. As a result, the mixture of the secondary medium and the gas can be ejected in a swirling flow. When the swirling flow reaches the target object, it collides with the surface of the target object by rubbing it, which is effective for cleaning and cleaning.

When the regulating member for the nozzle swirling motion is provided outside the outer nozzle, the nozzle can be swung along the inner surface of the regulating member, and the ejected matter from the nozzle can be concentrated in a certain range.

If the restricting member is formed in a trumpet shape and an annular brush is attached to the opening end, the bristles of the brush are sequentially bent outward and return when gas or the like is ejected while swirling, so that the object surface Can be evenly rubbed with the brush hair.

In the apparatus according to the present invention, in addition to the effects of the invention relating to the nozzle described above, it is not necessary to add a pressurizing means to a secondary medium supply source such as a detergent liquid, and the entire apparatus can be made compact.

In addition, since the supply pipe to the ejection nozzle can be only the gas supply pipe, the operation of the ejection nozzle can be easily performed.

Further, since the supply source of the secondary medium can be a storage container, the secondary medium can be easily exchanged.

Claims

The scope of the claims

1. An outer nozzle formed of flexible tubing and having a free end at the tip, and formed of a tubing that is inserted into the outer nozzle and has the same flexibility as the outer nozzle. With an inner nozzle whose tip forms a free end,

The outer nozzle has a flow path between the inner surface of the inner nozzle and the outer surface of the inner nozzle, the base end communicating with the pressurized gas supply source, and a gas outlet at the end.

The inner nozzle communicates with a secondary medium supply source for jetting, which has a base end formed of a liquid or a granular material or a mixture of a liquid and a granular material, while having a secondary medium outlet at a distal end thereof. Has,

The secondary medium ejection port is located in a negative pressure region formed near the gas ejection port when the gas is ejected from the gas ejection port,

As the gas is ejected from the ejection port through the flow path, at least the front part of the outer nozzle and the inner nozzle including both the ejection ports pivots, and at the same time, the secondary medium is supplied from the supply source through the passage. Is sucked and ejected from the outlet of the secondary medium in a mixed state with gas.

A nozzle characterized in that:

2. In the nozzle according to claim 1,

A balancer is mounted on the outer periphery of the outer nozzle to assist the swiveling motion of the outer nozzle and the inner nozzle,

A nozzle characterized in that:

3. In the nozzle according to claim 1 or 2,

Outside the outer nozzle, further comprising a regulating member that regulates the turning movement of the outer nozzle and the inner nozzle,

A nozzle characterized in that:

4. In the nozzle according to claim 1 or the claim,

The outer nozzle and the inner nozzle are made of a flexible synthetic resin tube.

A nozzle characterized in that:

5. The nozzle according to claim 1, wherein the gas is compressed air, and the pressurized gas supply source is a compressor.

6. the secondary medium is a cleaning liquid;

The nozzle according to any one of claims 1 to 3.

7. The secondary medium is an abrasive material consisting of a powdery substance or a granular substance,

A nozzle according to any one of claims 1 to 3.

8. The secondary medium is a mixture of a liquid and an abrasive material,

The nozzle according to any one of claims 1 to 3.

9. a plurality of the balancers are attached at intervals along the outer peripheral length direction of the outer nozzle;

3. The nozzle according to claim 2.

10. The regulating member is formed in a front-spreading flared shape surrounding the entire swirling portion of the outer nozzle and the inner nozzle,

The nozzle according to claim 3.

11. An annular brush is attached to the open end of the trumpet-shaped regulating member,

The nozzle according to claim 10.

12. The restricting member comprises a ring-shaped member partially surrounding the swirling portion of the outer nozzle,

The fluid ejection nozzle according to claim 3.

13. An outer nozzle formed of flexible tubing and having a free end at the tip, and a tubing inserted into the outer nozzle and having the same flexibility as the outer nozzle. A nozzle having an inner nozzle formed and having a free end, a pressurized gas supply, and a secondary medium supply for discharging liquid or powder or a mixture of liquid and powder. With

The outer nozzle has a gas outlet at a distal end of the flow path while a base end of a flow path formed between the outer nozzle and the outer surface of the inner nozzle communicates with a pressurized gas supply source,

The inner nozzle has a base end of the internal passage communicating with the secondary medium supply source, and has a secondary medium ejection port at a front end; The secondary medium ejection port is located in a negative pressure region formed near the gas ejection port when the gas is ejected from the gas ejection port,

As the gas is jetted from the jet through the flow path, at least the front part of the outer nozzle including both jets and the inner nozzle swirls, and at the same time, from the supply source through the internal passage of the inner nozzle. The secondary medium is sucked, and the secondary medium is ejected from the outlet of the secondary medium in a mixed state with the gas.

A spouting device characterized by the above-mentioned. ,

14. In the ejection device according to claim 13,

A balancer is installed on the outer periphery of the outer nozzle to assist the swiveling motion of the outer nozzle and the inner nozzle,

A spouting device characterized by the above-mentioned.

15. The fluid ejection device according to claim 13 or 14,

Outside the outer nozzle, a regulating member that regulates the turning movement of the outer nozzle and the inner nozzle is further provided.

A spouting device characterized by the above-mentioned.

16. the pressurized gas supply is a compressed air supply;

The compressed air supply source and the gas flow path of the nozzle are communicated via a first communication path,

An ejection device according to any one of claims 13 to 15.

17. An opening / closing means for the communication path is provided in the first communication path, and a gun-type ejection nozzle mechanism is integrated by incorporating the opening / closing means and the nozzle.

An ejection device according to any one of claims 13 to 15.

18. The compressed air supply is an aerosol-type compressed air supply,

17. The ejection device according to claim 16.

19. The secondary medium supply is a secondary medium storage container,

The storage container and the internal passage for the secondary medium of the inner nozzle are openably and closably connected via a second communication passage.

An ejection device according to any one of claims 13 to 15.

20. The storage container is a storage container for a cleaning liquid, An ejection device according to claim 19.

21. The storage container is detachably connected to the gun-type ejection nozzle mechanism, and communicates with the secondary medium internal passage of the inner nozzle via a second communication passage.

An ejection device according to claim 17.