JP2017192880A - Injection nozzle and injector equipped with this injection nozzle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an injection nozzle capable of more effectively removing dirt and deposits to be cleaned, and an injection device provided with the injection nozzle. SOLUTION: An outer pipe 21 and an inner pipe 22 form an inner / outer double pipe structure, a pressurized gas is injected from between the inner pipe 22 and the outer pipe 21, and a secondary medium can be injected from the inner pipe 22. The outer pipe 21 is made of a fixed outer pipe 23 having a first receiving portion 27 extending outward in the radial direction and a hard material, and has a through hole 30 inside which communicates with the fixed outer pipe 3. A rotating body 24 rotatably provided with respect to the fixed outer tube 23, an eccentric body 25 attached and fixed to the tip of the rotating body 4, and an eccentric body 25 attached and fixed to the eccentric body 25 via a bearing 31 and having a diameter. It is arranged between the movable body 26 in which the second receiving portion 28 extending outward in the direction is formed and the first receiving portion 27 and the second receiving portion 28, and is attached to the movable body 26. It is provided with an elastic member 29 that imparts force. [Selection diagram] Fig. 1

Description

  The present invention relates to an injection nozzle that injects pressurized gas stored in a pressurized gas supply source, and an injection device that includes the injection nozzle.

  An injection nozzle and an injection device are conventionally known as tools used when cleaning an object to be cleaned to which dirt or the like is attached. For example, Patent Document 1 shown below describes an injection gun including a nozzle and a guide. The nozzle of the injection gun described in this Patent Document 1 is made of a flexible cylinder, and has a blowout port that allows the pressurized fluid to pass through the cylinder and injects the pressurized fluid to the tip. Have. Further, the guide of the injection gun is formed so that the cross-sectional shape is circular and is arranged on the radially outer side of the nozzle, and is formed so as to guide the turning of the nozzle. That is, since the nozzle of this injection gun turns by injecting the pressurized fluid from the outlet, the pressurized fluid is injected from the outlet while turning the rotating nozzle along the guide. In addition, the spray gun is provided with a brush at the tip of the guide. This brush has a tip portion arranged so that the pressurized fluid is directed in a direction in which the pressurized fluid is ejected from the nozzle outlet, and is configured to sequentially rotate together with the nozzle and the pressurized fluid.

  However, the injection device described in Patent Document 1 requires a considerable injection pressure in order to inject the pressurized fluid from the outlet and stably rotate the nozzle. For this reason, the pressurized fluid ejected from the nozzle tends to be at a high pressure, and thus the conventional nozzle has a problem that it can only be used for high-pressure ejection. Further, the injection device described in Patent Document 1 requires a trumpet-shaped guide in order to stabilize the turning diameter when the nozzle turns, while keeping the nozzle along the inner peripheral surface of the guide. It is also necessary to swivel the nozzle. Therefore, a frictional resistance is generated between the nozzle and the inner peripheral surface of the guide, and the frictional resistance is increased between the nozzle and the inner peripheral surface of the guide when the amount of contact of the nozzle and the inner peripheral surface of the guide increases. There is also a tendency for the frictional resistance generated in the case to increase. Therefore, the injection device described in Patent Document 1 also has a problem that the swirlability of the nozzle gradually decreases.

  In order to solve such problems, the applicant of the present application invented the injection device described in Patent Document 2. The injection device described in Patent Document 2 has a rotating body that constitutes a part of a flow path of a pressurized gas, and the rotating body is made of a hard material and is rotatable with respect to the tip of a fixed tube. It is configured to work. Thereby, the problem that the injection device can be used only for the high-pressure injection used by the nozzle when the nozzle is swung can be solved. Further, in the injection device described in Patent Document 2, the injection pressure when the pressurized fluid is injected from the outlet is relatively low, or the amount of the pressurized fluid discharged from the outlet is relatively small. Even so, the nozzle starts to turn well in the guide. For this reason, it is possible to cope with a case where the object to be cleaned requires delicate injection such as feather fibers, and the nozzle and the injection device can be used in a wide range of fields.

JP 2003-154294 A Japanese Patent No. 5161517

  The invention described in Patent Document 2 described above solves the problem that the nozzle, which has been a conventional problem, can only be used for high-pressure injection by turning the nozzle along the guide. . Further, in the injection device described in Patent Document 2, the nozzle starts to rotate smoothly even when the injection pressure of the pressurized fluid is relatively low or the amount of air blown from the air outlet is small. For this reason, there is an effect that the target to be cleaned can be reliably jetted even on the target to be cleaned that requires delicate jetting, such as feather fibers.

  The applicant of the present application aims to provide an injection device more effectively with respect to the invention described in Patent Document 2 described above, and an injection nozzle having a better effect and an injection device equipped with the injection nozzle We conducted an intensive study. That is, although the invention described in the above-mentioned Patent Document 2 performs the rotational impact cleaning that removes the dirt on the dirty surface of the cleaning target by injecting the pressurized gas toward the cleaning target, The striking force cleaning is based on a non-contact method in which the surface to be cleaned and the spraying device do not come into contact with each other, so it is difficult to remove the dirt and persistent dirt stuck to the dirt surface.

  The present invention has been made in view of the above-described points, and further includes an injection nozzle capable of removing and cleaning dirt and the like on a cleaning target to which dirt and deposits are attached, and the injection nozzle. It aims at providing an injection device.

The injection nozzle according to the present invention is:
(1) An outer tube and an inner tube inserted into the outer tube form an inner / outer double tube structure, and pressurized gas stored in a pressurized gas supply source is placed between the inner tube and the outer tube. An injection nozzle for injecting from the inner pipe a secondary medium made of liquid, powder or a mixture of liquid and powder, and stored in a secondary medium supply source. The base end is in communication with the pressurized gas supply source, and the base end portion is formed with a fixed outer tube formed with a first receiving portion that extends outward in the radial direction. A rotating body provided inside with a through hole communicating with the tube, rotatably provided with respect to the distal end of the fixed outer tube, an eccentric body attached and fixed to the distal end portion of the rotating body, and a bearing And a movable body formed with a second receiving portion that is fixedly attached to the eccentric body and that extends outward in the radial direction. A fixing portion disposed between the first receiving portion and the second receiving portion and provided with an elastic member for applying a biasing force to the movable body, wherein the eccentric body is fixedly attached to the rotating body. And, at the tip of the fixed portion, a connecting portion fixed in a dotted manner with respect to the fixed portion so as to have a rotation center intersecting with the rotation center of the fixed portion, and an outer peripheral surface in contact with the inner peripheral surface of the bearing And an eccentric portion, and when the rotating body starts rotating, it receives a biasing force of the elastic member and performs precession with the connection portion as a base point. Injection nozzle,
(2) The outer tube and the inner tube inserted into the outer tube form an inner / outer double tube structure, and the pressurized gas stored in the pressurized gas supply source is placed between the inner tube and the outer tube. An injection nozzle for injecting a secondary medium made of liquid, powder or a mixture of liquid and powder and stored in a secondary medium supply source from the inner pipe, The base end communicates with the pressurized gas supply source, and the base end is formed with a fixed outer tube formed with a first receiving portion extending radially outward, and in the longitudinal direction of the fixed outer tube. A fixed pin member disposed at a predetermined position, and a rotating body made of a hard material, provided with a through hole communicating with the fixed outer tube inside, and rotatably provided with respect to a tip of the fixed outer tube; An eccentric body mounted and fixed to the tip of the rotating body, and fixed to the eccentric body via a bearing, A movable body having an engaging portion that engages with the constant pin member and having a second receiving portion formed extending outward in the radial direction; the first receiving portion and the second receiving portion; And an elastic member that applies an urging force to the movable body, and the eccentric body receives the urging force of the elastic member when the rotating body starts a rotational motion, and the fixed body An injection nozzle, wherein the movable body is configured to perform precession based on an engagement point between the pin member and the engagement portion,
(3) The spray nozzle according to (1) or (2), wherein the movable body includes a brush for cleaning a cleaning target.
(4) The gist is the injection nozzle according to any one of (1) to (3), wherein the elastic member is a coil spring.

Moreover, the injection device provided with the injection nozzle according to the present invention,
(5) The gist of the present invention is an ejection device including the ejection nozzle according to any one of (1) to (4).

  According to the injection nozzle and the injection device according to the present invention, the pressurized gas and the secondary medium can be injected from various angles to the object to be cleaned, and fine dirt and adhering matter adhering to the object to be cleaned can be removed. It can be removed more effectively. Further, according to the injection nozzle according to the present invention, the injection amount of the secondary medium can be adjusted by adjusting the injection pressure of the pressurized gas, so the degree of dirt and adhering matter adhering to the cleaning target Appropriate injection pressure can be arbitrarily set according to the condition, and only dirt and deposits are reliably removed without applying an excessive load to the object to be cleaned and thereby damaging the object to be cleaned. Can do. In addition, since the spray pressure can be arbitrarily set to remove dirt and deposits on the cleaning target, it can be used for cleaning targets that require more delicate spraying and can be used over a wide range. It is also possible to provide an injection nozzle and an injection device that can perform the above operation. In particular, according to the injection nozzle and the injection device according to the present invention, the movable body is provided with a brush for cleaning an object to be cleaned, so that a three-dimensional movement can be performed by precessing the brush. The brush can come into contact with the object to be cleaned and remove dirt directly. As a result, it is possible to more effectively remove persistent stains adhering to the object to be cleaned, and it is possible to finish the object to be cleaned even more neatly.

It is a front view of the injection device concerning the present invention. It is sectional drawing showing 1st Embodiment of the injection nozzle which concerns on this invention. It is sectional drawing showing 2nd Embodiment of the injection nozzle which concerns on this invention.

  Embodiments of an injection nozzle according to the present invention and an injection device including the injection nozzle will be described with reference to the drawings. First, an embodiment of an injection nozzle according to the present invention will be described with reference to FIG.

  As shown in FIG. 1, the injection device 1 according to the present embodiment includes an operation unit 2, a storage container 3, an on-off valve operation member 4, a coupling body 5, and an injection nozzle 6.

  The operation unit 2 includes a gun body 7 and a trigger 8. The gun body 7 has an input end 9 and an output end 10. A suction port 11 is formed in the input end 9, and a discharge port 12 is formed in the output end 10. A flow path 13 is formed between the suction port 11 and the discharge port 12. The suction port 11 is an opening for sucking air as a pressurized gas stored in the pressurized gas supply source 14 and supplied from the pressurized gas supply source 14. As a method of forming the suction port 11, a method using piping may be used, or another method may be used.

  The discharge port 12 is an opening for discharging the pressurized gas sucked from the suction port 11. The distribution path 13 is a path for guiding and transferring the pressurized gas sucked from the suction port 11 toward the discharge port 12. The flow path 13 is not particularly limited in its inner diameter and shape as long as it can guide and transfer air as pressurized gas toward the discharge port 12 by a predetermined amount.

  The trigger 8 is for adjusting the flow rate of the supplied air when air as pressurized gas supplied from the pressurized gas supply source 14 is sent from the upstream side toward the downstream side. The trigger 8 is configured to operate a flow rate adjusting unit 15 in which the gun body 7 is provided. That is, when the trigger 8 is operated in a direction closer to the gun body 7, the flow rate adjustment unit 15 is opened, and a larger flow rate of air can be supplied. Conversely, when the trigger 8 is operated in a direction away from the gun body 7. The flow rate adjustment unit 15 is closed so that the amount of air supply can be reduced. In the present embodiment, an example of the operation unit 2 has been described using the operation unit 2 configured in a gun shape. However, the operation unit 2 is not limited to the configuration configured in a gun shape. The thing of the structure of may be sufficient.

  As the pressurized gas supply source 14, for example, an air compressor is used. The pressurized gas supply source 14 is connected to the gun body 7 via a supply pipe (not shown). When the trigger 8 is pulled, the gun body 7 passes through a pressurized gas flow path, which will be described later, of the coupling body 5 and is sent to a transfer flow path of the injection nozzle 6, which will be described later. While the trigger 8 is being pulled, the communication state is maintained from the supply pipe line to the transfer flow path, and by returning the trigger 8, the communication state from the supply pipe line to the transfer flow path is released.

  The storage container 3 as a secondary medium supply source is detachably attached to the upstream side of the on-off valve operating member 4. The storage container 3 stores, for example, a liquid such as a cleaning liquid, a secondary medium made of a granular material or a mixture of a liquid and a granular material without applying pressure, and the storage container 3 has an injection nozzle 6. One end of the inner tube 22 constituting the tube extends toward the bottom. The storage container 3 is connected to the on-off valve operating member 4 so as to maintain airtightness in the storage container 3 and to prevent liquid leakage. As the secondary medium, in addition to the cleaning liquid used in the present embodiment, a blasting abrasive that is a granular material, a coating material that is a granular material or a liquid, and the like can be used.

  The on-off valve operating member 4 is disposed between the storage container 3 and the connecting body 5. The on-off valve operating member 4 is connected to the storage container 3 on the upstream side, and connected to the coupling body 5 on the downstream side. In addition, the upstream and downstream in the on-off valve operating member 4 are referred to as upstream when the detergent liquid stored in the storage container 3 flows into the on-off valve operating member 4, and the side from which the detergent liquid flows out is referred to as downstream. The on / off valve operating member 4 is provided with an operating lever 16 for operating the on / off valve. By operating the operation lever 16, the detergent liquid can be supplied toward the injection port. In the present embodiment, it is preferable to ensure airtightness between the on-off valve operating member 4 and the connecting body 5, and as a configuration therefor, for example, a packing member is preferably used.

  The connection body 5 is connected to the operation unit 2, the on-off valve operation member 4, and the injection nozzle 6, and connects the operation unit 2, the on-off valve operation member 4 and the injection nozzle 6. In this connection body 5, a pressurized gas flow path is formed as a flow path through which air is transferred, and an inner tube 22 for transferring the detergent liquid is disposed inside. That is, the connecting body 5 is formed with a flow path for allowing the operating portion 2, the on-off valve operating member 4 and the injection nozzle 6 to communicate with each other.

  Next, the configuration of the injection nozzle 6 according to the present embodiment will be described. The injection nozzle 6 is connected to the downstream side of the operation unit 2, in other words, to the distal end side of the operation unit 2 by a conventional method such as screwing. The injection nozzle 6 has an inner / outer double tube structure including an outer tube 21 and an inner tube 22 inserted into the outer tube 21, and pressurization stored in the pressurized gas supply source 14. Air as gas is injected from between the inner tube 22 and the outer tube 21 and is stored in the storage container 3 as a secondary medium supply source made of liquid, powder or a mixture of liquid and powder. The secondary medium can be ejected from the inner tube 22.

[Configuration of outer tube 21]
The outer tube 21 includes a fixed outer tube 23, a rotating body 24, an eccentric body 25, and a movable body 26 arranged from the proximal end to the distal end, and a first receiver (to be described later) constituting the fixed outer tube 23. An elastic member 29 is disposed between the portion 27 and a second receiving portion 28 which will be described later and constitutes the movable body 26. That is, the outer tube 21 has a proximal end communicating with the pressurized gas supply source 14 and a rigid outer tube 23 formed with a first receiving portion 27 formed at the proximal end and extending radially outward. A rotating body 24 made of a material and communicating with the fixed outer tube 23 is provided therein, and is provided rotatably at the tip of the fixed outer tube 23, and is attached to the tip of the rotating member 24. A fixed eccentric body 25, a movable body 26 which is fixedly attached to the eccentric body 25 via a bearing 31 and has a second receiving portion 28 formed to extend outward in the radial direction; An elastic member 29 is provided between the first receiving portion 27 and the second receiving portion 28 and applies an urging force to the movable body 26. The movable body 26 is attached with a brush for cleaning the object to be cleaned.

[Configuration of Fixed Outer Tube 23]
The fixed outer tube 23 is disposed on the most proximal end side in the injection nozzle 6, and a coupling portion 32 for coupling to the coupling body 5 is formed on the proximal end side (left side in FIG. 2). Yes. The connecting portion 32 is formed in a male screw shape in the present embodiment, and is connected to the connected portion 46 of the connecting body 5 formed in the female screw shape. As long as the fixed outer tube 23 and the connector 5 are connected to each other, another configuration may be used. Further, the fixed outer tube 23 is formed with a first receiving portion 27 that is formed to extend radially outward from the fixed outer tube 23 at a predetermined position on the proximal end side. The first receiving portion 27 has a first receiving surface 32a formed on the distal end side so as to abut one end of an elastic member 29 described later and to support the urging force of the elastic member 29. It is configured.

  Further, the fixed outer tube 23 is formed in a tapered shape at a position located on the distal end side by a predetermined amount from the connecting portion 32 so that the outer diameter gradually decreases from the proximal end side toward the distal end side. Further, the fixed outer tube 23 is formed with a bearing mounting portion 33 on the distal end side. The bearing mounting portion 33 is formed in a groove shape whose outer diameter is smaller than that of other portions. In the present embodiment, two bearings 331 are attached to the bearing attachment portion 33 with a spacer 33a interposed therebetween. The shape of the bearing mounting portion 33 and the number and configuration of the bearings are not limited to those in the present embodiment. Further, the bearing 31 attached to the bearing attaching portion 33 can be used by arbitrarily using a conventionally known one.

  A through hole 23 a is formed in the fixed outer tube 23 so as to penetrate in the longitudinal direction. The through-hole 23a allows the inner tube 22 to be inserted therein, and a transfer space 34 having a predetermined width is formed between the outer peripheral surface 22a of the inner tube 22 and the inner peripheral surface 21a of the fixed outer tube 23. Is formed. The transfer space 34 is a space for transferring the air supplied from the pressurized gas supply source 14 from the connection portion 32 toward the injection port, and can sequentially transfer air of a predetermined pressure. .

[Configuration of Rotating Body 24]
The rotating body 24 is provided on the distal end side of the fixed outer tube 23 so as to be rotatable with respect to the fixed outer tube 23. The rotating body 24 is made of a hard material, and a through-hole 30 communicating with the fixed outer tube 23 is provided therein. A series of transfer passages in the injection nozzle 6 is formed by the through hole of the fixed outer tube 23 and the through hole 30 of the rotating body 24.

  The rotating body 24 includes a rotating body main body 35 and a nozzle main body 36. The rotating body main body 35 is formed as a cylindrical body having a through hole 30 having an inner diameter substantially the same as the outer diameter of the bearing 31 fixedly attached to the fixed outer tube 23 and formed in the inner end thereof. An insertion hole 24 a having a smaller diameter than the inner diameter of the through hole 30 is formed at the end on the side. Further, in the through hole 30, a surface that extends from the through hole 30 to the insertion hole 24 a becomes an abutment surface 24 b that can abut on the bearing 31 attached to the bearing attachment portion 33 of the fixed outer tube 23. ing. That is, the insertion hole 24 a is formed so as to be larger than the outer diameter of the fixed outer tube 23 and smaller than the outer diameter of the bearing 31, and the abutting surface 24 b is a proximal side surface of the bearing 31. It is formed so that it can contact.

  Further, the rotating body 24 is formed with a screw portion 37 for attaching and fixing the nozzle main body 36 and the eccentric body 25 to the tip portion. In the present embodiment, the screw portion 37 is formed in a female screw shape on the inner peripheral surface of the through hole 30. The nozzle body 36 and the eccentric body 25 are screwed onto the screw portion 37 and are fixedly mounted.

  The nozzle body 36 has a male screw that can be screwed to the screw portion 37 at the proximal end, and a nozzle distal end 38 that extends from the proximal end toward the distal end. . The male screw is formed so as to be able to be screwed with the screw part 37 of the rotating body 24. The nozzle tip portion 38 is a tubular member extending from the base end portion of the nozzle body 36 toward the tip portion. The nozzle tip portion 38 has a blowout port 39 at the tip, and blows in a direction that is radially offset from the rotation axis of the rotating body 24 in a direction that intersects both the rotation axis direction and the radial direction. An outlet 39 is formed as an opening.

  In the injection nozzle 6, the pressurized gas supply source 14 and the through hole 30 communicate with each other by airtightly connecting the proximal end of the fixed outer tube 23 and the distal end of the connecting portion 32. Accordingly, the air supplied from the pressurized gas supply source 14 by the operation of the trigger 8 is jetted from the tip of the through hole 30, and the reaction force is loaded on the nozzle tip 38, so that the rotating body 24 rotates around the rotation axis. Will turn. The inner tube 22 is disposed inside the nozzle tip portion 38, and the tip position of the air outlet 39 and the tip position of the inner tube 22 are arranged to be substantially the same position.

  The eccentric body 25 is pointed with respect to the fixed portion 41 so as to have a fixed portion 41 attached and fixed to the rotating body 24 and a rotation center intersecting with the rotation center of the fixed portion 41 at the tip of the fixed portion 41. A fixed point-like connecting portion 42, and an eccentric portion 43 having an outer peripheral surface in contact with the inner peripheral surface of the bearing 31, and when the rotating body 24 starts a rotational motion, the elastic member 29 receives a biasing force, It is configured to perform precession around the point-like connecting portion 42. Below, the specific structure of the fixing | fixed part 41, the eccentric part 43, and the dotted | punctate connection part 42 is demonstrated.

  The fixing portion 41 is formed on the base end side so as to be able to be screwed with the screw portion 37 of the rotating body 24, and has a large diameter formed on the distal end side that is larger than the outer diameter of the portion into which the screw is screwed. A portion 44 is formed. Further, a through hole 45 is formed through the fixing portion 41. The through hole 45 has a portion formed in the fixing screw portion 37 coaxially with the rotation shaft of the rotating body 24, and a portion formed in the large diameter portion 44 has a rotation shaft of the rotating body 24. The position offset in the radial direction by a predetermined amount is formed so as to be the center of the hole. That is, the through hole 45 is formed so that the center of the hole is shifted by a predetermined amount in the radial direction between the portion formed in the fixing screw portion 37 and the portion formed in the large diameter portion 44. Yes.

  Further, a point-like connecting portion 42 is formed at a portion formed in the large diameter portion 44 so as to protrude from the inner peripheral surface of the through hole 45. This point-like connecting portion 42 is for connecting the fixed portion 41 of the eccentric body 25 and the eccentric portion 43, and is formed so as to be connected to the connected portion 46 of the eccentric body 25 described later. Yes.

  The eccentric portion 43 includes a connected portion 46 and a flange portion 47 on the proximal end side, and an eccentric portion main body 49 in which an eccentric hole 48 is formed. The coupled portion 46 is formed in a part of the flange portion 47 by digging in a groove shape from the proximal end side (left side in the drawing) to the distal end side (right side in the drawing). The connected portion 46 can be connected to the connecting portion 32, and when connected, the eccentric portion 43 can swing with respect to the fixed portion 41 with the point-like connecting portion 42 as a base point. It has become. The eccentric portion main body 49 has an outer peripheral surface that is inserted into a bearing 31 described later on the base end side, that is, inserted into an inner peripheral hole of the bearing 31, and the bearing 31 is disposed on the outer peripheral surface at the distal end side. A male screw for mounting and fixing the fixing nut 51 to be fixed to is formed. The eccentric hole 48 is formed through at a position where the center of the hole is offset by a predetermined distance from the axial center of the eccentric portion 43. The eccentric hole 48 is formed in such a size that the nozzle tip portion 38 can be inserted therethrough.

  The eccentric body 25 starts rotating together with the rotating body 24 when the rotating body 24 starts rotating. When the rotating body 24 starts rotating, the fixing portion 41 that is also fixedly attached to the rotating body 24 starts rotating coaxially with the rotation axis of the rotating body 24. Then, the rotational force is transmitted to the eccentric portion 43 connected to the fixed portion 41 at the connecting portion 32, and the eccentric portion 43 also starts rotating. At this time, the eccentric portion 43 is attached via the connecting portion 32 to the through hole 45 that is offset by a predetermined distance from the axial center of the rotating body 24 in the fixed portion 41. Therefore, when the rotating body 24 starts to rotate, the eccentric portion 43 performs an orbital motion performed in an eccentric state offset by a predetermined distance from the axial center of the rotating body 24.

  As described above, the bearing 31 is mounted on the outer peripheral surface of the eccentric portion 43. That is, the outer diameter of the outer peripheral surface of the eccentric portion 43 is formed to be substantially the same as the inner peripheral surface of the bearing 31, so that the bearing 31 can be attached to the eccentric portion 43. . The bearing 31 is fixed by a fixing nut 51 after being mounted.

  The movable body 26 is a member formed of a material such as a resin, and is fixedly attached to the rotating body 24 via a bearing 31. That is, the movable body 26 is prevented from rotating because the rotating body 24 is interposed via the bearing 31 even when the rotating body 24 is rotating.

  The movable body 26 is formed such that the end surface on the base end side becomes the second receiving portion 28 and is disposed so as to face the first receiving portion 27 described above. The second receiving portion 28 is formed so as to be in contact with the other end portion of a coil spring as an elastic member 29 (described later) disposed between the first receiving portion 27 and the coil spring. The power, that is, the urging force can be received.

  Further, the movable body 26 is formed in a stepped shape having an inner diameter that increases from the front end toward the base end, and a bearing mounting portion 52 into which the bearing 31 is fitted is formed therein. The bearing mounting portion 52 is a portion formed inside the movable body 26 so as to have substantially the same inner diameter as the outer peripheral surface of the bearing 31, and when the bearing 31 is fitted therein, the movable body 26 is moved to the bearing 31. It is attached to the rotating body 24 via the.

  The brush 26a is attached and fixed to the outer peripheral side of the movable body, and has a brush body 26b for scraping off dirt to be cleaned at the tip, and fixed to the movable body 26 at the base end. A portion 26c is provided. A conventionally known brush 26a may be arbitrarily selected and used, and the brush body 26b may be arbitrarily selected and used for the hardness and length of the brush body 26b. Furthermore, the method of attaching and fixing the brush 26a to the movable body 26 employs a method using screws in the present embodiment, but other methods may be used.

  The coil spring as the elastic member 29 is disposed between the first receiving portion 27 and the second receiving portion 28, and is attached to the first receiving portion 27 and the second receiving portion 28 with a predetermined size. It is formed so as to be able to urge power. The fixed outer tube 23 and the rotating body 24 described above are arranged in a coil spring so that the overall size of the injection nozzle 6 can be made compact. The elastic member 29 may have any configuration as long as a predetermined amount of urging force can be applied to the first receiving portion 27 and the second receiving portion 28, in other words, the movable body 26, but the size of the entire injection nozzle 6 is not limited. From the viewpoint of reducing the size, it is preferable to use a coil spring.

  The inner tube 22 is inserted through the fixed outer tube 23 on the proximal end side, and communicates with the air outlet 39 of the rotating body 24 on the distal end side. The proximal end of the inner tube 22 communicates with the storage container 3. In the injection nozzle 6, the inner tube 22 is inserted into the fixed outer tube 23 on the proximal end side (left side in FIG. 1) of the inner tube 22, and the proximal end is inserted into the storage container 3. It communicates with the storage container 3. Further, in the injection nozzle 6, the distal end side (right side in FIG. 1) of the inner tube 22 communicates with the air outlet 39 of the rotating body 24. That is, in the injection device 1, the inner tube 22 communicates with the storage container 3 via the on-off valve operating member 4 on the base end side (left side in FIG. 1), and the intermediate portion is inserted through the fixed outer tube 23. The tip (right side in FIG. 1) is inserted into a through hole 30 provided inside the rotating body 24.

  The inner tube 22 is formed using a flexible tube having flexibility. This is because only a pressure of at most about atmospheric pressure, which is a storage pressure in the storage container 3, is applied, so that a soft material is used, and the distal end portion of the inner tube 22 follows the rotating body 24 so as to turn well. It is to make it. The inner tube 22 may be a flexible tube made of a synthetic resin having flexibility such as nylon, polytetrafluoroethylene, polyurethane, or polypropylene. In this case, the inner tube 22 is protected by the outer tube 21 including the fixed outer tube 23 and the rotating body 24. Therefore, even when a flexible tube made of a soft material is used for the inner tube 22, the tip of the inner tube 22 does not get out of order. Therefore, the inner tube 22 does not collide with the object to be cleaned and is worn out, or the inner tube 22 collides with the object to be cleaned.

  The inner tube 22 may be configured using a series of flexible tubes from the proximal end to the distal end. For example, as another aspect, the portion inserted into the fixed outer tube 23 is made of hard plastic or A fixed inner tube 22 made of metal or the like may be used, and a rotating inner tube 22 using a flexible tube may be attached to the tip of the fixed inner tube 22 so as to be swiveled.

  The opening end on the distal end side of the inner tube 22 may protrude slightly from the air outlet 39, may be disposed inside a through-hole 30 of a rotating body 24 that will be described later and constitutes the outer tube 21, or may be fixed outside. It may be fastened near the tip of the tube 23. When the distal end side of the inner pipe 22 is arranged in this manner, a negative pressure region (from the vicinity of the blowout opening 39 or from the inside of the through hole 30 to the distal end of the fixed outer pipe 23 by air being injected from the blowout opening 39 ( By NP), the inside of the inner tube 22 also has a negative pressure, and the secondary medium can be sucked out of the storage container 3.

  That is, the opening end on the distal end side of the inner tube 22 only needs to be disposed in a negative pressure region (NP) formed when pressurized gas is injected from the blowout port 39. As described above, the secondary medium is sucked by the negative pressure region (NP) by injecting the pressurized gas. Then, the secondary medium is sucked up through the inner tube 22 and flows out from the open end. The negative pressure region (NP) is formed not only near the outside of the air outlet 39 but also inside the through hole 30.

  At this time, in the vicinity of the outside of the air outlet 39, the pressurized gas is injected from the air outlet 39 and expands most rapidly and becomes a low pressure, so that the suction force of the secondary medium can be obtained most strongly. In addition, due to the rapid expansion of the pressurized gas, the secondary medium flowing out from the opening end is finely dispersed and aerosolized. Therefore, according to the spray nozzle 6 of the present embodiment using the detergent liquid as the secondary medium, the aerosolized detergent liquid can be placed on the jet of pressurized gas and sprayed onto the surface to be cleaned. In addition, since the mixed gas of the aerosolized detergent liquid and the pressurized gas is injected by the movable body 26 that rotates while precessing, the pressure of the pressurized gas is amplified while being rotated and diffused. This can be sprayed with a uniform and high spray pressure over a wide area of the surface to be cleaned.

  Moreover, since the spray nozzle 6 of this Embodiment has attached the brush 26a to the front-end | tip of the movable body 26, as above-mentioned, while using the washing | cleaning liquid sprayed on the washing | cleaning object, a washing | cleaning object is directly made by the brush 26a. Fine dirt and deposits can be scraped off while rubbing. Further, since the brush 26a is attached to the movable body 26 that revolves while precessing from the point-like connecting portion 42, the brush 26a also revolves while performing precession. Therefore, the angle with which the hair of the brush 26a comes into contact with the object to be cleaned also changes sequentially, and the cleaning can be performed by a three-dimensional movement, and fine dirt and deposits accumulated on the surface to be cleaned are scraped from various directions. Can be taken. Therefore, the spray nozzle 6 of the present embodiment can more efficiently remove dirt and deposits accumulated on the object to be cleaned, and can be cleaned more cleanly.

  Next, the operation of the spray nozzle 6 according to the present embodiment and the spray device 1 including the spray nozzle 6 will be described. First, when the user operates the trigger 8 in a direction in which the trigger 8 is brought closer to the gun body 7, the flow rate adjusting unit 15 is opened and the supply of air from the pressurized gas supply source 14 is started. The air supplied from the pressurized gas supply source 14 is sucked from the suction port 11 of the gun body 7 and then discharged from the discharge port 12 through the flow path 13. And after that, it passes through the flow path formed in the connecting body 5 and further passes through the transfer flow path formed in the outer tube 21 and is injected from the injection port.

  When air is injected from the injection port, a negative pressure region (NP) is formed around the injection port. By forming this negative pressure region, the inner tube 22 also has a negative pressure, and the secondary medium in the storage container 3 is sucked. The sucked secondary medium passes through the inner tube 22 and is finally injected.

  Moreover, when air is injected from the injection port, the rotating body 24 starts to rotate by the propulsive force of the air injected from the injection port. The rotation is sequentially performed while accelerating until reaching a predetermined speed. At this time, the eccentric body 25 attached and fixed to the rotating body 24 performs an orbital movement as the rotating body 24 rotates. And since this eccentric body 25 is connected with the movable body 26 via the bearing 31, it tries to perform an orbital motion without rotating with the eccentric body 25. At this time, the movable body 26 receives a biasing force by a coil spring. Therefore, when the movable body 26 tries to start an orbital movement, the movement on the base end side is limited by the biasing force.

  Such movement of the movable body 26 is also transmitted to the eccentric body 25 via the bearing 31. Therefore, in the eccentric body 25, when the fixing portion 41 rotates, the connecting portion 32 becomes the center of the swing motion, and the eccentric portion 43 starts the swing motion. For this reason, the movable body 26 performs the precession motion with the point-like connecting portion 42 as a base point by combining the orbital motion and the swing motion.

  The fact that the movable body 26 performs the precession has the following effects. That is, when the movable body 26 performs precession, the brush 26a attached to the movable body 26 also performs precession. Accordingly, since the tip of the brush 26a rubs against the object to be cleaned three-dimensionally from various directions to perform the cleaning, the object to be cleaned becomes easier to clean. Further, even if the object to be cleaned has a deposit, it is easier to remove the deposit. Furthermore, since the movable body 26 precesses, it becomes easy to remove fine dirt and deposits to be cleaned, so that the injection pressure of the air supplied from the pressurized gas supply source 14 can be lowered or blown out. Dirt and deposits can be removed regardless of the amount. For this reason, it is possible to perform spraying on a cleaning target that requires more delicate spraying, and it is possible to use the cleaning target on a larger number of cleaning targets.

  Next, a second embodiment of the spray nozzle 61 according to the present invention and the spray device 1 including the spray nozzle 61 will be described. Since the configuration other than the injection nozzle 61 in the present embodiment is the same as that of the first embodiment described above, the description in the second embodiment is omitted.

  As shown in FIG. 3, the injection nozzle 61 according to the present embodiment has an inner / outer double tube structure including an outer tube 62 and an inner tube 63 inserted into the outer tube 62. The pressurized gas stored in the pressurized gas supply source 14 is jetted from between the inner tube 63 and the outer tube 62, and is composed of a liquid, a granular material, or a mixture of a liquid and a granular material as a secondary medium supply source. The secondary medium stored in the storage container 3 is configured to be ejected from the inner pipe 63. Since the configuration of the inner tube 63 is the same as that of the first embodiment described above, only the configuration of the outer tube 62 will be described here.

  The outer tube 62 includes a fixed outer tube 64, a fixed pin member 65, a rotating body 66, an eccentric body 67, a movable body 68, and an elastic member (not shown in FIG. 3) from the proximal end to the distal end. That is, the outer tube 62 has a proximal end communicating with the pressurized gas supply source 14 and a fixed outer tube 64 formed with a first receiving portion 27 extending radially outward at the proximal end. The fixed pin member 65 disposed at a predetermined position in the longitudinal direction of the outer tube 64 and the through hole 30 made of a hard material and communicating with the fixed outer tube 64 are provided inside and rotated with respect to the distal end of the fixed outer tube 64. A rotating body 66 that is freely provided, an eccentric body 67 that is attached and fixed to the tip of the rotating body 66, and is attached and fixed to the eccentric body 67 via the bearing 31, and engages with the fixed pin member 65. A movable body 68 having an engaging portion and formed with a second receiving portion 72 extending outward in the radial direction is disposed between the first receiving portion 27 and the second receiving portion 72. An elastic member (not shown in FIG. 3) for applying a biasing force to the movable body 68, When the rolling element 66 starts rotating, the movable member 68 receives the biasing force of the elastic member (not shown in FIG. 3) and uses the engagement point between the fixed pin member 65 and the engagement portion as a base point. Is configured to do precession. The configuration of the fixed outer tube 64, the rotating body 66, and the elastic member (not shown in FIG. 3) is the same as that of the first embodiment described above, and thus the description thereof is omitted here.

  The fixed pin member 65 is disposed at a predetermined position in the longitudinal direction of the fixed outer tube 64, and is fixedly attached to the outer periphery of the fixed outer tube 64 by a method such as screwing. The fixing pin member 65 is formed so as to protrude outward in the radial direction by a resin material or the like. The fixed pin member 65 is formed so as to be engaged with an engaging portion described later provided in the movable body 68. In the present embodiment, the fixing pin member 65 is described using an example of a resin material. However, the material forming the fixing pin member 65 may be other than a resin material.

  The eccentric body 67 is attached to the distal end portion of the rotating body 66 and is disposed so as to protrude in the longitudinal direction by a predetermined amount from the distal end of the rotating body 66 when attached to the rotating body 66. The eccentric body 67 has an attachment fixing portion 69 attached and fixed to the rotating body 66 on the proximal end side, and a bearing attachment portion 70 for attaching the bearing 31 on the distal end side. The attachment fixing portion 69 is formed with a male screw that can be screwed with a female screw formed on the inner peripheral surface of the rotating body 66, and the male screw and the female screw are screwed together. An eccentric body 67 is connected to the rotating body 66. In addition, the attachment fixing portion 69 is formed so that the shaft on which the rotating body 66 rotates and the shaft on which the attachment fixing portion 69 rotates are coaxial with each other. On the other hand, the bearing mounting portion 70 is formed at a position shifted radially outward from the center of the rotating shaft by a predetermined amount. That is, the bearing mounting portion 70 is formed so as to be eccentric at a predetermined position shifted in the radial direction with respect to the rotating shaft.

  Further, the opening hole 71 formed in the eccentric body 67 is also formed so that the axis is shifted from the center of the hole between the proximal end side and the distal end side. That is, the opening hole 71 is located at the same position as the axial center of the rotator 66 on the base end side, whereas in the distal end side in the radial direction by a predetermined amount from the axial center of the rotator 66 It is formed so that the center of the hole is located at a shifted position.

  The movable body 68 is formed in a cover shape that entirely covers the rotating body 66. In the present embodiment, the movable body 68 is divided into two parts at the proximal end side and the distal end side, and an engaging portion 73 that engages with the fixed pin member 65 is formed. The engaging portion 73 is formed in a groove shape having substantially the same width as the outer diameter of the fixed pin member 65, and serves as a base point for the precession when the movable body 68 precesses as described later.

  The movable body 68 is formed so that the bearing 31 interposed between the movable body 68 and the eccentric body 67 is fixedly attached. Since the movable body 68 is coupled to the eccentric body 67 via the bearing 31, the movable body 68 is configured to perform a precession movement via the bearing 31 when the eccentric body 67 performs an eccentric movement as the rotating body 66 rotates. Has been. In addition, the movable body 68 is a second receiving portion 72 whose proximal end face is in contact with an end portion of a coil spring as an elastic member (not shown in FIG. 3).

  In such a configuration, the operation of the injection nozzle 61 and the injection device 1 according to the present embodiment will be described. First, when the user operates the trigger 8 in a direction in which the trigger 8 is brought closer to the gun body 7, the flow rate adjusting unit 15 is opened and the supply of air from the pressurized gas supply source 14 is started. The air supplied from the pressurized gas supply source 14 is sucked from the suction port 11 of the gun body 7 and then discharged from the discharge port 12 through the flow path 13. And after that, it passes through the flow path formed in the connecting body 5, and further passes through the transfer flow path formed in the outer tube 62 and is injected from the injection port.

  When air is injected from the injection port, a negative pressure region (NP) is formed around the injection port. By forming this negative pressure region, the inner pipe 63 also has a negative pressure, and the secondary medium in the storage container 3 is sucked. The sucked secondary medium passes through the inner pipe 63 and is finally injected.

  Moreover, when air is injected from the injection port, the rotating body 66 starts to rotate by the driving force of the air injected from the injection port. The rotation is sequentially performed while accelerating until reaching a predetermined speed. At this time, the eccentric body 67 attached and fixed to the rotary body 66 performs an orbital motion that moves while being eccentric at a position offset by a predetermined distance from the rotation center of the rotary body 66 as the rotary body 66 rotates. ing. And since this eccentric body 67 is connected with the movable body 68 through the bearing 31, it tries to perform an orbital motion without rotating with the eccentric body 67. At this time, the movable body 68 receives a biasing force from the coil spring at the second receiving portion 72. Therefore, when the movable body 68 tries to perform an orbital movement, the movement on the base end side is limited by the urging force from the coil spring.

  In the present embodiment, since the eccentric body 67 performs an orbital motion, the movable body 68 is engaged with the engagement portion 73 by the motion caused by this motion and the motion that restricts the orbital motion on the proximal end side by the coil spring. The precession exercises as a whole, starting from the union.

  The fact that the movable body 68 performs the precession has the same effect as described in the first embodiment. That is, according to the injection nozzle 61 and the injection device 1 including the injection nozzle 61 according to the present invention, the configuration according to the present embodiment has been described in the first embodiment described above. The same effect can be achieved.

  As mentioned above, although the injection nozzle concerning this invention and the injection apparatus provided with this injection nozzle were demonstrated in detail, the injection nozzle concerning this invention and the injection apparatus provided with this injection nozzle are not limited to this, this book Changes may be made as appropriate without departing from the spirit of the invention.

DESCRIPTION OF SYMBOLS 1 Injection apparatus 6,61 Injection nozzle 21,62 Outer tube 22,63 Inner tube 23,64 Fixed outer tube 24,66 Rotating body 25,67 Eccentric body 26,68 Movable body 27 1st receiving part 28,72 2nd receiving Part 29 Elastic member 30 Through hole 31 Bearing 34 Transfer space 35 Rotating body main body 36 Nozzle main body 39 Air outlet 41 Fixed part 42 Point-like connecting part 43 Eccentric part 44 Large diameter part 49 Eccentric part main body 65 Fixed pin member 73 Engaging part

Claims (5)

An outer tube and an inner tube inserted into the outer tube form an inner / outer double tube structure,
Injecting pressurized gas stored in a pressurized gas supply source from between the inner tube and the outer tube;
An injection nozzle for injecting a secondary medium made of a liquid, a granular material or a mixture of a liquid and a granular material and stored in a secondary medium supply source from the inner pipe,
The outer tube is
A fixed outer tube in which a base end communicates with the pressurized gas supply source, and a first receiving portion is formed on the base end portion to extend radially outward;
A rotating body made of a hard material and provided with a through-hole communicating with the fixed outer tube inside, and rotatably provided with respect to the tip of the fixed outer tube;
An eccentric body mounted and fixed to the tip of the rotating body;
A movable body that is fixedly attached to the eccentric body via a bearing and has a second receiving portion that is formed extending outward in the radial direction;
An elastic member that is disposed between the first receiving portion and the second receiving portion and applies a biasing force to the movable body;
The eccentric body is
A fixing portion attached and fixed to the rotating body;
An eccentric portion having a connecting portion fixed to the fixing portion in a point-like manner so as to have a rotation center intersecting with the rotation center of the fixing portion, and an outer peripheral surface in contact with the inner peripheral surface of the bearing at the tip of the fixing portion. An injection nozzle configured to receive a biasing force of the elastic member and perform precession with the connecting portion as a base point when the rotating body starts rotating motion. . An outer tube and an inner tube inserted into the outer tube form an inner / outer double tube structure,
Injecting pressurized gas stored in a pressurized gas supply source from between the inner tube and the outer tube;
An injection nozzle for injecting a secondary medium made of a liquid, a granular material or a mixture of a liquid and a granular material and stored in a secondary medium supply source from the inner pipe,
The outer tube is
A fixed outer tube in which a base end communicates with the pressurized gas supply source, and a first receiving portion is formed on the base end portion to extend radially outward;
A fixed pin member disposed at a predetermined position in the longitudinal direction of the fixed outer tube;
A rotating body made of a hard material and provided with a through-hole communicating with the fixed outer tube inside, and rotatably provided with respect to the tip of the fixed outer tube;
An eccentric body mounted and fixed to the tip of the rotating body;
A movable member that is fixedly attached to the eccentric body via a bearing, has an engaging portion that engages with the fixing pin member, and that forms a second receiving portion that extends outward in the radial direction. Body,
An elastic member that is disposed between the first receiving portion and the second receiving portion and applies a biasing force to the movable body;
When the rotating body starts rotating motion, the movable body receives a biasing force of the elastic member, and the movable body performs precession based on an engaging point between the fixed pin member and the engaging portion. An injection nozzle characterized by that.   The spray nozzle according to claim 1, wherein the movable body includes a brush for cleaning a cleaning target.   The injection nozzle according to claim 1, wherein the elastic member is a coil spring.   An injection apparatus comprising the injection nozzle according to claim 1.

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