JP2017056400A - Jet nozzle and jetting device including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a jet nozzle capable of being smoothly turned to favorably remove soil or dust in a part to be cleaned, and to provide a jetting device having this jet nozzle.SOLUTION: A jetting device comprises: a nozzle member 7a, which is formed of a flexible pipe material where a transfer passage 46 that transfers a gas is formed inside and makes the front part perform turning movement when a gas is jet out of a jet port formed at the tip; a guide member 55 arranged in the circumference of the nozzle member 7a to make the guide face 56 in the inner peripheral surface guide the turning movement of the nozzle member 7a; and a balancer 61 where the guide object face 62 in the outer peripheral surface comes in contact with the guide face 56 to assist the turning movement of the nozzle member 7a. The balancer 61 forms the opening of a low-friction resistance part 63a formed by penetration from the transfer passage 46 toward the guide object face 62 and/or the outer peripheral surface of the nozzle member 7a to reduce the friction resistance between the guide face 56 and the guide object face 62 when performing turning movement by jetting a part of the gas transferred through the transfer passage 46.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an injection nozzle that simultaneously injects a plurality of fluids used for cleaning and painting, such as gas and liquid, while rotating and diffusing them in a predetermined region, and an injection device including the injection nozzle.

  A fluid ejecting apparatus used for cleaning or painting ejects a gas such as compressed air from an ejection port of an ejection nozzle to eliminate dust and dirt from a portion to be cleaned. In addition, an injection device for fluid used in a cleaning device or the like uses a high-pressure air pressure to inject a liquid such as water or a cleaning liquid or a powdery or granular abrasive from an injection nozzle, thereby cleaning the portion to be cleaned. Wash away dirt. Therefore, conventional injection nozzles and injection devices for fluids and the like have a structure in which the injected fluid and the like are injected from the upstream side of the injection nozzle with the pressure of high-pressure air.

  For example, Patent Documents 1 and 2 disclose that an injection nozzle formed by rotating a jet nozzle formed by a flexible or flexible cylindrical body to rotate and diffuse fluid jetted, or an jet equipped with the jet nozzle. An apparatus is disclosed. Patent Document 3 also discloses an injection apparatus configured to attach a balancer to a flexible pipe material and to support the swivel movement of the nozzle member associated with gas ejection.

JP 11-123350 A JP 2000-51800 A JP 2003-154294 A

  As described above, in the injection nozzle and the injection device described in Patent Documents 1 to 3, when the injection nozzle starts to turn, the radius of rotation at the time of turning is gradually increased, and finally the outer peripheral surface of the injection nozzle is guided. It turns while making it contact | abut to the inner peripheral surface of this. Thus, in a state where the outer peripheral surface of the injection nozzle is in contact with the inner peripheral surface of the guide, a frictional resistance is generated between the outer peripheral surface of these injection nozzles and the inner peripheral surface of the guide, and it does not turn smoothly. There was a fear. Further, when the injection nozzle turns while the outer peripheral surface of the injection nozzle and the inner peripheral surface of the guide are in contact with each other, either the outer peripheral surface of the injection nozzle or the inner peripheral surface of the guide, or the outer peripheral surface of the injection nozzle and All of the inner peripheral surface of the guide is scraped, and there is a problem that the durability of the injection nozzle may be reduced or the turning may not be performed smoothly. As described above, when the spray nozzle does not turn smoothly, a new problem has arisen in that it becomes impossible to remove dirt and dust from the portion to be cleaned.

  The present invention has been made in view of such a problem. An injection nozzle capable of smoothly turning an injection nozzle and removing dirt and dust from a portion to be cleaned, and the injection nozzle. An object is to provide an injection device provided.

The present invention
(1) Formed by a flexible tube, a communication port for communicating with a pressurized gas supply source is formed at a base end portion forming a fixed end, and is supplied from the pressurized gas supply source through the communication port. An injection port for injecting the gas is formed at a tip portion forming a free end, and a transfer path for transferring the gas supplied from the pressurized gas supply source is formed between the communication port and the injection port. And an injection nozzle including a nozzle member that operates so that a front portion including the injection port performs a turning motion as gas is injected from the injection port, the nozzle being positioned around the nozzle member The nozzle member has a guide member whose inner peripheral surface is a guide surface for guiding the turning motion of the nozzle member, and an outer peripheral surface is a guided surface in contact with the guide surface. Helping the swivel movement The balancer is formed so as to penetrate from the transfer path toward the guided surface and / or the outer peripheral surface of the nozzle member, and a part of the gas transferred through the transfer path is ejected from the balancer. A low-friction resistance portion that reduces frictional resistance between the guide surface and the guided surface when performing a turning motion, an injection nozzle,
(2) The injection nozzle according to (1), wherein the low frictional resistance portion is also formed on the nozzle member,
(3) The amount of gas ejection at the low frictional resistance portion near the tip of the nozzle member is larger than the amount of gas ejection at the low frictional resistance portion near the base end of the nozzle member The injection nozzle according to (1) or (2), which is configured to be
(4) The injection nozzle according to any one of (1) to (3), wherein the low frictional resistance portion is formed in a line at equal intervals in a circumferential direction of the balancer.
(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 present invention, since the low friction resistance portion penetratingly formed from the transfer path toward the guided surface and / or the outer peripheral surface of the nozzle member is formed in the balancer, when the nozzle member performs a turning motion, The frictional resistance generated between the guided surface and the guided surface can be reduced. Therefore, according to the present invention, the nozzle member can be turned more smoothly inside the guide member, and dirt and dust on the portion to be cleaned can be more reliably removed. Further, according to the present invention, as described above, since the frictional resistance generated between the guide surface and the guided surface can be reduced, the durability of the injection nozzle can be greatly improved.

It is the schematic showing the injection apparatus which concerns on embodiment of this invention in a partial cross section. It is sectional drawing showing the cross-sectional structure of the injection nozzle of an injection apparatus. It is the sectional view on the AA line of FIG. It is explanatory drawing for demonstrating another structure of a low frictional resistance part.

  The structure of the injection nozzle which concerns on this invention, and the injection apparatus provided with this injection nozzle is demonstrated based on FIGS. 1-3. FIG. 1 is a schematic view showing an embodiment of an injection device according to the present invention in a partial cross section, FIG. 2 is a cross-sectional view showing a cross-sectional configuration of an injection nozzle constituting the injection device, and FIG. FIG.

  As shown in FIG. 1, the injection device 1 includes an operation unit 2, a storage container 3, an on-off valve operation member 4, a connecting body 5, a nozzle attachment unit 6, and an injection nozzle 7.

[Configuration of operation unit 2]
The operation unit 2 includes a gun body 11 and a trigger 12. The gun body 11 has an input end 13 and an output end 14. A suction port 15 is formed in the input end 13, and a discharge port 16 is formed in the output end 14. A flow path 17 is formed between the suction port 15 and the discharge port 16. The suction port 15 is an opening for sucking compressed gas supplied from the compressed gas supply source 18. In order to form the suction port 15, a method using piping may be used, or another method may be used.

  The discharge port 16 is an opening for discharging the compressed gas sucked from the suction port 15. The distribution path 17 is a path for transferring the compressed gas sucked from the suction port 15 toward the discharge port 16. The flow path 17 only needs to be able to transfer a predetermined amount of compressed gas, and the inner diameter and shape are not particularly limited.

  In addition, the operation unit 2 has a first connection portion 21 formed at the output end 14. The first connection portion 21 is configured by forming a screw thread on the outer peripheral side of the gun body 11 at the output end 14 of the gun body 11. The first connection portion 21 is formed in such a size that can be screw-fitted to a first connected portion 22 described later formed in the coupling body 5. A discharge port 16 is formed at the output end 14 of the first connection portion 21. In other words, the first connection portion 21 is formed in a direction along the flow path 17 formed inside the gun body 11.

  The trigger 12 is for adjusting the flow rate of the supplied gas when the air supplied from the compressed gas supply source 18 is sent from the upstream side toward the downstream side. The trigger 12 is configured to operate a flow rate adjusting unit 23 provided in the gun body 11. That is, if the trigger 12 is operated so as to be close to the gun body 11, the flow rate adjusting unit 23 can be opened to supply a larger flow rate gas, and conversely, if the trigger 12 is operated in a direction away from the gun body 11, The flow rate adjustment unit 23 is closed, and the gas supply amount is reduced. In the present embodiment, the operation unit 2 has been described using a gun-like configuration as an example. However, the operation unit 2 is not limited to this configuration, and may have other configurations. Good.

  For example, an air compressor is used as the compressed gas supply source 18. The compressed gas supply source 18 is connected to the gun body 11 via a supply pipe. The gun body 11 feeds the compressed gas from the compressed gas supply source 18 toward the compressed gas channel 46 (described later) of the connector 5 when the trigger 12 is pulled. The compressed gas sent in enters the transfer path 54 described later formed between the outer nozzle 52 and the inner nozzle 53 via the through-hole 51 from the compressed gas channel 46. While the trigger 12 is being pulled, the supply pipe line, the compressed gas flow path 46, the through hole 51, and the transfer path 54 are maintained in communication with each other. Blocked.

[Configuration of storage container 3]
The storage container 3 is detachably attached to the upstream side of the on-off valve operating member 4. The storage container 3 is for storing the detergent liquid 24, and the detergent liquid 24 is placed inside the storage container 3. The storage container 3 stores the detergent liquid 24 inside without pressurizing, and an insertion tube 25 extends toward the bottom 26 in the storage container 3. The storage container 3 includes a second connection portion 27 that is connected to the on-off valve operating member 4. It is preferable that the second connection portion 27 is configured so that the airtightness in the storage container 3 can be maintained and the liquid does not leak when the on-off valve operating member 4 is connected to the storage container 3.

[Configuration of Open / Close Valve Operating Member 4]
The on-off valve operating member 4 is configured to be connected to the storage container 3 on the upstream side and connected to the connection body 5 on the downstream side between the storage container 3 and the connection body 5. The on-off valve operating member 4 includes a second connected portion 28 connected to the second connecting portion 27 of the storage container 3 and a third connecting portion 30 connected to the third connected portion 29 of the connector 5. Yes. Further, the opening / closing valve operating member 4 is provided with a supply portion (not shown) for supplying the detergent solution 24 stored in the storage container 3 to the connector 5. The on-off valve operating member 4 is provided with an operating lever 31 for operating the on-off valve. By operating the operation lever 31, the detergent liquid 24 can be supplied toward the nozzle body. In the present embodiment, in order to ensure airtightness between the on-off valve operating member 4 and the coupling body 5, the third connection portion 30 uses a packing member that uses an elastic member. A part other than the packing member may be arbitrarily selected and used for the part 30.

[Configuration of Linked Body 5]
The connecting body 5 is connected to the operation section 2, the on-off valve operation member 4 and the nozzle mounting section 6, and connects the operation section 2, on-off valve operation member 4 and nozzle mounting section 6. The connector 5 includes a first inflow portion 42 having a first inflow port 41, a second inflow portion 44 having a second inflow port 43, and a first discharge portion 45 having a first discharge port 16. In addition, the connecting body 5 communicates between the first inlet 41, the second inlet 43, and the first outlet 16, and the first inlet 41, the second inlet 43, and the first outlet 16. A compressed gas channel 46 is formed between 16. In the first inflow portion 42, the first inflow port 41 is formed at the upstream end, and the first connected portion 22 is formed on the inner peripheral surface side of the compressed gas flow path 46 from the upstream end to a predetermined position. Is formed. The first connected portion 22 is formed so as to be connected to the first connecting portion 21 formed in the gun body 11. In the present embodiment, the first connected portion 22 is formed in a female screw shape with respect to the first connecting portion 21. However, if the first connected portion 22 can be reliably connected to the first connecting portion 21, this configuration is used. It is not limited to.

  The second inflow portion 44 has a second inflow opening 43 formed in the lower portion thereof. In the second inflow portion 44, a third connected portion 29 to which the third connecting portion 30 is connected is formed on the inner peripheral surface where the second inflow port 43 is formed. The third connected portion 29 is formed in a female screw shape in which a screw hole is formed on the inner peripheral surface between the second inlet 43 and a predetermined position toward the upper portion. If it can connect reliably, it will not be limited to this structure.

  In the first discharge part 45, the first discharge port 16 is formed at the downstream end, and the fourth connected part 47 is formed on the inner peripheral surface side of the compressed gas flow path 46 from the downstream end to a predetermined position. Is formed. The fourth connected portion 47 is formed so as to be connected to the fourth connecting portion 48 formed in the nozzle mounting portion 6. In the present embodiment, the fourth connected portion 47 is formed in a female screw shape with respect to the fourth connecting portion 48. However, if the fourth connected portion 47 can be reliably connected to the fourth connecting portion 48, this configuration is used. It is not limited to.

  The compressed gas channel 46 is a channel formed between the first inlet 41, the second inlet 43, and the first outlet 16. The compressed gas channel 46 allows the compressed gas supplied from the compressed gas supply source 18 to flow from the first inlet 41 and discharge from the first outlet 16. Further, the compressed gas flow path 46 is provided with an inner nozzle 53 (to be described later) constituting the injection nozzle 7 from the second inlet 43 toward the first outlet 16. As described above, the second inflow port 43 is formed in the lower portion of the connection body 5, and the first discharge port 16 is formed in the rear end portion of the connection body 5. Therefore, in the compressed gas channel 46, the inner nozzle 53 extends in the vertical direction from the second inlet 43, bends in the horizontal direction in the compressed gas channel 46, and extends toward the first outlet 16. It is formed as follows.

  In the present embodiment, the first connected portion 22, the third connected portion 29, and the fourth connected portion 47 have been described using an example in which they are formed in a female screw shape. However, the present invention is not limited to this. It is not something.

[Configuration of nozzle mounting portion 6]
The nozzle attachment portion 6 is attached and fixed to the front end of the connection body 5. The nozzle mounting portion 6 has a through hole 51 inside. A base end portion of an outer nozzle 52 constituting the ejection nozzle 7 is fixed to the front end of the nozzle mounting portion 6, and an inner nozzle 53 constituting the ejection nozzle 7 is inserted into the outer nozzle 52. A gap formed between the inner surface of the outer nozzle 52 and the outer surface of the inner nozzle 53 forms a transfer path 54 through which compressed gas flows. The transfer path 54 communicates with the compressed gas flow path 46 of the connector 5 from the through hole 51 of the nozzle mounting portion 6. The inner nozzle 53 has a rear portion that enters the compressed gas flow path 46 of the connecting body 5 from the through hole 51 of the nozzle mounting portion 6 and then extends to the second inlet 43 of the connecting body 5 to open the on-off valve operating member 4. It is connected to the. The passage formed inside the inner nozzle 53 constitutes a detergent circulation passage 57 through which the detergent liquid 24 flows.

  The injection nozzle 7 is detachably attached and fixed to the distal end side of the nozzle attachment portion 6. The injection nozzle 7 includes a nozzle member 7a and a guide member 55. The nozzle member 7 a includes an outer nozzle 52 and an inner nozzle 53. The base end of the outer nozzle 52 is fixed to the front end of the nozzle mounting portion 6. An inner nozzle 53 is inserted into the outer nozzle 52. In addition, a gap having a predetermined interval is formed between the inner surface of the outer nozzle 52 and the outer surface of the inner nozzle 53. This gap is formed as a transfer path 54 through which the compressed gas flows. The transfer path 54 communicates with the compressed gas flow path 46 of the connector 5 from the through hole 51 of the nozzle mounting portion 6. Further, the rear end portion of the inner nozzle 53 communicates with the compressed gas flow path 46 of the connector 5 from the through hole 51 of the nozzle mounting portion 6. Further, the inner nozzle 53 extends to the second inlet 43 of the connecting body 5 after the rear end portion enters the compressed gas flow path 46 of the connecting body 5 from the through-passage of the nozzle mounting portion 6, and operates the on-off valve. It is connected to the member 4. The passage formed in the inner nozzle 53 constitutes a detergent circulation passage 57 through which the detergent liquid 24 flows.

  The entire outer nozzle 52 is formed of a flexible synthetic resin tube material such as nylon, Teflon (registered trademark), polyurethane, or polypropylene, and has an outer injection port 52a at the tip. The inner nozzle 53 is also formed of a similar synthetic resin tube material at least in the outer nozzle 52, and has an inner injection port 53a at the tip. In the outer nozzle 52 and the inner nozzle 53, the compressed gas passes through the transfer path 54 between the inner nozzle 53 and the outer nozzle 52, and the gas is injected from the outer injection port 52 a of the outer nozzle 52 formed at the tip of the flow path. Thus, due to the flexibility of the material, the portion in front of the base end portion to which the outer nozzle 52 is fixed turns and rotates.

  In the inner nozzle 53, the inner injection port 53a at the front end of the passage of the inner nozzle 53 is slightly outside the outer injection port 52a at the front end of the flow path of the outer nozzle 52, that is, gas flows from the flow path of the outer nozzle 52. When being injected, it protrudes into a negative pressure region formed in the vicinity of the outer injection port 52a.

  On the outer periphery of the outer nozzle 52, a plurality of synthetic resin balancers 61 are attached to the tip of the outer nozzle 52 and a predetermined position spaced in the length direction. The balancer 61 applies an inertial force to the swiveling motion of the nozzle to efficiently perform the swiveling, and swivels while bringing the guided surface 62 formed on the outer peripheral surface thereof into contact with a guide surface 56 of a guide member 55 described later. Therefore, it is possible to turn more smoothly.

  A guide member 55 is attached outside the nozzle member 7a, that is, outside the outer nozzle 52. The guide member 55 is formed in a trumpet shape having an inner diameter that gradually increases from the proximal end side toward the distal end side. The opening end, that is, the tip end of the guide member 55 projects forward from the outer nozzle 52. The guide member 55 is formed of a synthetic resin material, and causes the outer nozzle 52 to perform a revolving motion along its inner peripheral surface, that is, the guide surface 56. Thereby, the movement of the nozzle is restricted to a certain range, and at the same time, gas or the like is injected along the opening end of the guide member 55.

  The balancer 61 is formed with a first low frictional resistance portion 63 a as a low frictional resistance portion that reduces the frictional resistance between the guide surface 56 and the guided surface 62. The first low frictional resistance portion 63a is for reducing the frictional resistance between the guide surface 56 and the guided surface 62 when the nozzle member 7a performs a turning motion. The first low frictional resistance portion 63 a is formed to be a first through hole 63 b that is formed to penetrate from the transfer path 54 toward the guided surface 62, and one of the compressed gases transferred through the transfer path 54. The portion is configured to eject from the first through hole 63b. In the present embodiment, the first through hole 63b is oriented in the radial direction when the outer nozzle 52 is viewed from the front, and in a direction orthogonal to the inner peripheral surface of the outer nozzle 52 when the outer nozzle 52 is viewed from the side. It penetrates. That is, the first low frictional resistance portion 63 a is configured by opening the first through hole 63 b so that the compressed gas is ejected in the normal direction of the outer nozzle 52.

  In the present embodiment, the second low friction resistance portion 63 c as the low friction resistance portion is also formed in the outer nozzle 52. The second low frictional resistance portion 63 c formed in the outer nozzle 52 is formed so as to be a through hole 63 d formed through the transfer path 54 toward the guided surface 62, and is transferred through the transfer path 54. The compressed gas is partly ejected from the through hole 63d. In the present embodiment, the through hole 63d is formed so as to penetrate in the radial direction when the outer nozzle 52 is viewed from the front and in a direction perpendicular to the inner peripheral surface of the outer nozzle 52 when the outer nozzle 52 is viewed from the side. doing. That is, the second low frictional resistance portion 63c formed also in the outer nozzle 52 is configured by opening the second through hole 63d so that the compressed gas is ejected in the normal direction of the outer nozzle 52.

  The first low frictional resistance part 63a and the second low frictional resistance part 63c may be the same or different in the amount of compressed gas ejected from the first through hole 63b and the second through hole 63d. Good. In addition, the first low friction resistance portion 63a and the second low friction resistance portion 63c are such that the amount of compressed gas discharged at a position close to the distal end portion of the injection nozzle 7 as the nozzle member 7a is at the base end portion of the injection nozzle 7. It is preferable to be configured to be larger than the amount of compressed gas ejected at a close position. When the compressed gas is supplied into the transfer path 54 and the compressed gas is injected, the injection nozzle 7 performs a swiveling motion inside the guide member as described later. The amount of movement when performing this turning motion is greater at the position near the tip than at the position near the base end of the injection nozzle 7. Therefore, the magnitude of the force that contacts the guide member during the swivel motion of the injection nozzle 7 is larger at the position near the tip of the injection nozzle 7 than at the position near the base end of the injection nozzle 7. Become. Therefore, the injection amount of the first low frictional resistance part 63a and the second low frictional resistance part 63c at a position close to the distal end side of the injection nozzle 7 is set to the first low frictional resistance part 63a at a position close to the base end side of the injection nozzle 7. By making it larger than the injection amount of the second low frictional resistance portion 63c, the magnitude of the force that contacts the guide member can be reduced.

  The injection amount of the first low friction resistance portion 63a and the second low friction resistance portion 63c at a position close to the distal end portion of the injection nozzle 7 is set to the first low friction resistance portion 63a at a position close to the base end portion of the injection nozzle 7. In order to make it larger than the injection amount of the second low frictional resistance part 63c, the number of the first low frictional resistance parts 63a and the second low frictional resistance parts 63c at positions close to the tip part of the injection nozzle 7 is set to the injection nozzle 7. This may be realized by increasing the number of the first low friction resistance parts 63a and the second low friction resistance parts 63c at positions close to the base end of the nozzle, or the first low friction at positions near the tip of the injection nozzle 7. It is realized by making the size of the resistance portion 63a and the second low friction resistance portion 63c larger than those of the first low friction resistance portion 63a and the second low friction resistance portion 63c at positions close to the base end portion of the injection nozzle 7. Also good. Further, other methods may be used, or a combination of the above may be realized.

  Furthermore, it is preferable that the low frictional resistance portions 63 are formed at equal intervals in the circumferential direction of the outer nozzle 52. As described above, the first low friction resistance portion 63a and the second low friction resistance portion 63d are arranged side by side in the circumferential direction of the outer nozzle 52 at equal intervals, so that the nozzle member 7a is more smoothly rotated. A swivel motion can be performed.

  In the present embodiment, the low frictional resistance portion 63 is formed so that the compressed gas is ejected toward the normal line direction of the balancer 61 or the normal line direction of the outer nozzle 52. It is not limited to doing. For example, as shown in FIG. 4A, the outer peripheral surfaces of the balancer 61 and the outer nozzle 52 may be formed in a long hole shape, and as shown in FIG. 4B, the outer nozzle It may be formed so as to be orthogonal to the inner peripheral surface of the outer nozzle 52 when viewed from the side and to be inclined at a predetermined angle from the radial direction when viewed from the front. In this case, it is preferable that the low frictional resistance portion 63 is formed so as to penetrate in a direction that assists the turning motion when the nozzle member 7a makes the turning motion. By doing in this way, when the nozzle member 7a carries out the turning motion, it can be made to operate | move smoothly more easily.

  Next, the effect of the injection device 1 having such a configuration will be described. First, in the case where the compressed gas and the detergent liquid 24 are jetted together with the jetting device 1, the storage container 3 for the detergent liquid 24 is mounted, and the operation lever 31 of the on-off valve operating member 4 is set to the open position.

  Next, the compressor which is the compressed gas supply source 18 is driven. When the trigger 12 of the gun body 11 is pulled in this state, the compressed gas flows from the compressor and flows to the flow path of the outer nozzle 52 through the flow path 17, the compressed gas flow path 46, and the through hole 51. And it ejects vigorously from the outer injection port 52a at the end of the flow path. At this time, both the outer nozzle 52 and the inner nozzle 53 are formed of a flexible synthetic resin material at the front portion, and the base end portion is fixed, while the tip end portion is a free end. Therefore, the swivel motion is started so that the free end having the injection port is exposed. This turning motion is restricted to a certain radial range by a guide member 55 provided outside the outer nozzle 52. That is, the guide member 55 has an inner peripheral surface as a guide surface 56, and the balancer 61 provided in the outer nozzle 52 has an outer peripheral surface as a guided surface 62. Therefore, the outer nozzle 52 and the inner nozzle When the rotary motion of 53 is performed, the guide member 55 regularizes the range of the rotational motion of the outer nozzle 52 and the inner nozzle 53 while the guide surface 56 and the guided surface 62 are in contact with each other, thereby making it more stable. . Further, in the present embodiment, by providing the balancer 61, it is possible to easily apply a centrifugal force to the outer nozzle 52 and the inner nozzle 53, and it is possible to perform a turning motion more smoothly.

  In particular, in the injection device 1, since the balancer 61 is formed with the first low frictional resistance portion 63a and the outer nozzle 52 is formed with the second low frictional resistance portion 63d, the compressed gas flows through the compressed gas passage. When it flows, a part of the compressed gas that reaches the outer injection port is also injected from the first low frictional resistance part 63a and the second low frictional resistance part 63b. The compressed gas ejected from the first low frictional resistance portion 63a and the second low frictional resistance portion 63b is ejected toward the guide surface 56 when the outer nozzle 52 and the inner nozzle 53 are swiveling. Therefore, when the compressed gas is injected toward the guide surface 56 during the turning motion, the force with which the guide surface 56 and the guided surface 62 come into contact with each other can be reduced. The frictional force generated in 62 can be reduced. When the frictional force is reduced in this way, the outer nozzle 52 and the inner nozzle 53 can perform the turning motion more smoothly, and the turning motion can be further stabilized.

  When the compressed gas that has passed through the transfer path 54 is vigorously injected from the outer injection port 52 a of the outer nozzle 52, a negative pressure acts on the periphery of the inner injection port 53 a of the inner nozzle 53. And a negative pressure acts also on the inside of the detergent distribution channel 57 in the inner nozzle 53 and the insertion tube 25 from the inner injection port 53a, and sucks up the detergent liquid 24 in the storage container 3. The detergent liquid 24 rides on the compressed gas ejected from the outer ejection port 52a of the outer nozzle 52, and is discharged as a mist-like mixed fluid mixed with the compressed gas. As described above, the outer nozzle 52 and the inner nozzle 53 of the nozzle member 7a jet the compressed gas and the detergent liquid 24 as a mixed fluid while performing a swiveling motion, so that the mixed fluid becomes a spiral flow with an amplified momentum. And collide against the surface to be cleaned. Further, the turning movement of the outer nozzle 52 and the inner nozzle 53 of the nozzle member 7a is performed while the guided surface 62 is in contact with the guide surface 56, so that the guide member 55 on which the guide surface 56 is formed has a certain range. Guided to be. Therefore, energy is not wasted at the time of injection, and a stronger collision force or cleaning force can be obtained as compared with the case of simply injecting forward from a fixed nozzle.

  Since the injection device 1 has only a single pipeline connected to the gun body 11, the pipeline does not get in the way during the injection operation. Moreover, since the storage container 3 for the detergent liquid 24 is located between the gun body 11 and the spray nozzle 7, the operation balance of the gun body 11 is also good. When changing or replenishing the detergent liquid 24, it is only necessary to remove the storage container 3 and install a different detergent liquid 24 or a storage container 3 of the supplemented detergent liquid 24. The hole portion of the guide member 55 takes in external air and ejects it along the guide surface 56, thereby generating an induced flow that flows from the hole portion to the tip of the guide member 55 when the nozzle is swirled.

  When the operation lever 31 of the on-off valve operating member 4 is closed and the trigger 12 of the gun body 11 is pulled, the compressed gas sent from the compressor passes through the passage and the through hole 51 and is connected to the outer nozzle as described above. It passes through the flow path 52 and is ejected from the ejection port at the tip. On the other hand, the insertion tube 25 for the detergent liquid 24 is blocked from the internal passage of the inner nozzle 53 by the opening / closing valve operating member 4. Therefore, the outer nozzle 52 and the inner nozzle 53 release the swirling particles of only air while performing the swiveling motion as described above. Such air-only swirling particles are effective in removing light deposits such as dust and dust as a pretreatment for cleaning. Moreover, it can be effectively used for a drying process after spraying a cleaning liquid or after applying a paint.

  As mentioned above, although the injection nozzle and the injection device according to the present invention have been described in detail, the above description only illustrates the injection nozzle and the injection device according to the present invention, and the present invention is not limited thereto. Therefore, the spray nozzle and the spray device may be changed as appropriate without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 Injection apparatus 2 Operation part 3 Storage container 4 On-off valve operation member 5 Connection body 6 Nozzle attachment part 7 Injection nozzle 17 Flow path 18 Compressed gas supply source 24 Detergent liquid 46 Transfer path 51 Through-hole 52 Outer nozzle 53 Inner nozzle 54 Compressed gas Flow path 55 Guide member 56 Guide surface 57 Detergent flow path 61 Balancer 62 Guided surface 63a First low friction resistance portion 63b First through hole 63c Second low friction resistance portion 63d Second through hole

Claims (5)

Formed by a flexible tube, a communication port for communicating with a pressurized gas supply source is formed at a base end portion forming a fixed end, and the gas supplied from the pressurized gas supply source through the communication port A spray port for spraying is formed at a tip portion forming a free end, and a transfer path for transporting gas supplied from the pressurized gas supply source is formed between the communication port and the spray port, A jet nozzle including a nozzle member that operates so that a front portion including the jet port performs a turning motion as gas is jetted from the jet port,
A guide member which is disposed so as to be located around the nozzle member, and whose inner peripheral surface serves as a guide surface for guiding the turning motion of the nozzle member;
The outer peripheral surface is a guided surface in contact with the guide surface, and includes a balancer that assists the swivel movement of the nozzle member,
The balancer is formed so as to penetrate from the transfer path toward the guided surface and / or the outer peripheral surface of the nozzle member, and when the part of the gas transferred through the transfer path is ejected to perform the turning motion An injection nozzle, wherein an opening is formed in a low frictional resistance portion that reduces frictional resistance between the guide surface and the guided surface.   The injection nozzle according to claim 1, wherein the low frictional resistance portion is also formed on the nozzle member.   The amount of gas ejection at the low frictional resistance portion near the tip of the nozzle member is larger than the amount of gas ejection at the low frictional resistance portion near the base end of the nozzle member. The spray nozzle according to claim 1 or 2, wherein the spray nozzle is configured.   The injection nozzle according to any one of claims 1 to 3, wherein the low frictional resistance portions are formed at equal intervals in a circumferential direction of the balancer.   An injection apparatus comprising the injection nozzle according to claim 1.

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