JP2022007454A - Air nozzle - Google Patents

Abstract

To provide an air nozzle, which is configured so that fluid passage structures and constitutive members are not increased nor complicated and further a foreign matter or the like can be surely captured.SOLUTION: An air nozzle 1 comprises a socket 2 into which air is fed through a base part 2a side thereof and a nozzle main body 3 that is connected to a tip side of the socket 2. In the nozzle main body 3 side-portion of the socket 2 is formed a fitting-recessed position 4 into which the nozzle main body 3 is inserted, and on an inner peripheral surface of fitting-recessed position 4 is formed a female screw 5. In the socket 2 side-portion of the nozzle main body 3 is provided a fitting-cylindrical part 6 that is inserted into the fitting-recessed position 4 of the socket 2. On an outer peripheral surface of the fitting-cylindrical part 6 is formed a male screw 7 that is screwed to the female screw 5 in the fitting-recessed position 4 of the socket 2. A filter 8 is interposed between a tip of the fitting-cylindrical part 6 of the nozzle main body 3 and a bottom part of the fitting-recessed position 4 of the socket 2.SELECTED DRAWING: Figure 1

Description

INDUSTRIAL APPLICABILITY The present invention is an air nozzle used in various manufacturing industries, various service industries, and other industrial fields to inject high-pressure air from a tip portion to remove dust on the surface of machinery, products, etc., and to dry the dust. Regarding.

Various types of air nozzles have been developed so far. For example, a high-pressure nozzle unit including a filter injection rectification unit for adjusting air injection and an injection nozzle is incorporated in a housing, and the filter injection rectification unit is used. Those provided with a rectifier having a fluid guide surface for performing injection rectification of high-pressure air, an inlet filter, and the like are known.

Further, in the case where the porous filter is provided in the conduit of the injection fluid, in the ejection nozzle in which the porous filter is inserted in the conduit of the flow path tube main body, the closing nozzle provided at the tip of the flow path tube main body is provided. It is also known that a fluid ejection hole is formed in a coating film formed on a wall or the tip surface of the porous filter.

EP-A No. 3318336 Japanese Patent No. 5924655

Among the above-mentioned conventional injection nozzles, the former has a high-pressure nozzle unit equipped with a filter injection rectifier unit for adjusting air injection and an injection nozzle incorporated in the housing, and a rectifier, fluid guide surface, etc. inside the innermost part. In addition, since the structure is such that a plurality of constituent members are connected in a multi-layered manner at the outlet opening portion of the high-pressure air, there is a problem that a great deal of labor and cost are required for assembly and manufacturing. there were. Further, although the air nozzle has a filter structure, it cannot be expected to have a sufficient function of removing foreign matter.

On the other hand, the latter has a simple structure in which a porous filter is inserted into the conduit of the main body of the flow path, but the stability of the porous filter in the main body of the flow path is low, and it is suitable for injecting high-pressure fluid. Was not suitable.

An object of the present invention is to provide an air nozzle capable of reliably capturing foreign matter and the like without causing an increase or complexity of a fluid passage structure or constituent members.

The present invention according to claim 1 is an air nozzle having a socket into which air is sent from the base side and a nozzle body connected to the tip end side of the socket, and the nozzle body side portion of the socket has a portion. A fitting recess into which the nozzle body is inserted is formed, a female screw is formed on the inner peripheral surface of the fitting recess, and a fitting inserted into the fitting recess of the socket is formed on the socket side portion of the nozzle body. A combined tubular portion is provided, and a male screw to be screwed into a female screw in the fitting recess of the socket is formed on the outer peripheral surface of the fitting tubular portion, and the tip of the fitting tubular portion of the nozzle body and the socket are formed. It is characterized in that a filter is interposed between the fitting recess and the bottom of the fitting recess.

The present invention according to claim 2 is the air nozzle according to claim 1, whichever is the outer peripheral surface of the base portion of the fitting tubular portion of the nozzle body or the inner peripheral surface of the tip portion of the fitting recess of the socket that abuts on the portion. A concave groove is formed on one side, and a seal ring is fitted in the concave groove to seal the outer peripheral surface of the base of the fitting tubular portion of the nozzle body and the inner peripheral surface of the tip of the fitting recess of the socket. That is a technical feature.

The present invention according to claim 3 has a locking ridge in which the tip portion of the socket abuts against the base side portion of the fitting tubular portion on the outer peripheral surface of the nozzle body in the air nozzle according to claim 1 or 2. It is characterized by being formed.

According to the fourth aspect of the present invention, regarding the air nozzle according to any one of claims 1 to 3, the nozzle body has a bottomed cylindrical air inflow chamber opened on the socket side and air. It is provided with a plurality of air injection passages formed at predetermined intervals on the outer periphery of the bottom of the inflow chamber.

The present invention according to claim 5 has an air nozzle according to any one of claims 1 to 4, wherein the tip portion of the nozzle body has a sharp tapered shape, and an air injection passage is formed on the inclined surface thereof. It is characterized in that an injection hole at the tip is formed.

The present invention according to claim 6 has a substantially disk-shaped filter for the air nozzle according to any one of claims 1 to 5.

The present invention according to claim 7 is the air nozzle according to any one of claims 1 to 6, wherein the filter is a sintered filter.

As described above, the air nozzle according to the present invention is an air nozzle having a socket into which air is sent from the base side and a nozzle body connected to the tip end side of the socket, and is a portion of the socket on the nozzle body side. Is formed with a fitting recess into which the nozzle body is inserted, a female screw is formed on the inner peripheral surface of the fitting recess, and the socket side portion of the nozzle body is inserted into the fitting recess of the socket. A fitting tubular portion to be fitted is provided, and a male screw to be screwed into a female screw in the fitting recess of the socket is formed on the outer peripheral surface of the fitting tubular portion, and the fitting tubular portion of the nozzle body is formed. Since the filter is interposed between the tip and the bottom of the fitting recess of the socket, the overall structure is not complicated and the number of constituent members is small. The air nozzle according to the present invention has a structure in which the filter is stably sandwiched between the nozzle body and the socket, so that foreign matter and the like can be reliably captured and removed, and when the air nozzle is used. The generation of noise can be effectively suppressed.

Further, a concave groove is formed on either the outer peripheral surface of the base of the fitting tubular portion of the nozzle body or the inner peripheral surface of the tip of the fitting recess of the socket that abuts on the portion, and a seal ring is formed in the concave groove. According to the air nozzle according to the present invention, which is fitted and covered so that the outer peripheral surface of the base of the fitting tubular portion of the nozzle body and the inner peripheral surface of the tip of the fitting recess of the socket are sealed, the nozzle body and the socket The airtightness at the joint with and can be enhanced.

Further, according to the air nozzle according to the present invention, in which a locking ridge is formed in which the tip portion of the socket abuts on the base side portion of the fitting tubular portion on the outer peripheral surface of the nozzle body, the nozzle body and the socket are connected. It's easier to do.

According to the air nozzle according to the present invention, in which the tip portion of the nozzle body is sharply tapered and the injection hole at the tip of the air injection passage is formed on the inclined surface thereof, noise reduction when using the air nozzle and air can be reduced. Both effects of jetting property are further improved.

According to the air nozzle according to the present invention in which the filter shape is a disk shape, it is possible to effectively obtain the catching and removing property of foreign matter and the like while ensuring the air flow velocity. In particular, the effect is enhanced in a sintered filter.

It is a vertical sectional view of the air nozzle which concerns on embodiment of this invention. It is a perspective view which shows the whole outer shape of the air nozzle of the same embodiment. It is an exploded perspective view of the air nozzle of the same embodiment. It is a side view which shows the use example which attached the air nozzle of the same embodiment to an air duster gun.

Next, an embodiment when the present invention is applied to an air nozzle for an air duster gun will be described with reference to the drawings, but the present invention is not limited to such an embodiment.

The air nozzle 1 according to the present embodiment has a socket 2 to which air is sent from the base portion 2a side and a nozzle body 3 connected to the tip end side of the socket 2, and is a nozzle body of the socket 2. A fitting recess 4 into which the nozzle body 3 is inserted is formed on the third side portion, a female screw 5 is formed on the inner peripheral surface of the fitting recess 4, and a socket 2 side portion of the nozzle body 3 is formed. A fitting tubular portion 6 to be inserted into the fitting recess 4 of the socket 2 is provided, and a female screw 5 in the fitting recess 4 of the socket 2 is provided on the outer peripheral surface of the fitting tubular portion 6. A male screw 7 to be screwed is formed, and a filter 8 is interposed between the tip of the fitting tubular portion 6 of the nozzle body 3 and the bottom portion 4a of the fitting recess 4 of the socket 2.

Further, in the present embodiment, the fitting tubular shape is provided for the base outer peripheral surface 6a of the fitting tubular portion 6 of the nozzle body 3 and the inner peripheral surface 4b of the tip portion of the fitting recess 4 of the socket 2 that abuts on the portion. A concave groove 14 is formed on the outer peripheral surface 6a side of the base of the portion 6, and the seal ring 15 is fitted in the concave groove 14 to seal the contact portion.

The concave groove 14 into which the seal ring 15 is fitted is formed not on the outer peripheral surface 6a of the base portion of the fitting tubular portion 6 of the nozzle body 3, but on the inner peripheral surface 4b of the tip portion of the fitting concave portion 4 of the socket 2. Is also good.

Further, in the present embodiment, a locking ridge 16 is formed so that the tip end portion of the socket 2 abuts on the base side portion of the fitting cylindrical portion 6 on the outer peripheral surface of the nozzle body 3.

Further, in the present embodiment, the nozzle body 3 has a bottomed cylindrical air inflow chamber 9 opened on the socket 2 side and a plurality of air injections formed on the outer periphery of the bottom 9a of the air inflow chamber 9 at predetermined intervals. It is provided with a passage 11.

Further, in the present embodiment, the tip portion 3a of the nozzle body 3 is formed in a sharp tapered shape, and the injection hole 11a at the tip of the air injection passage 11 is formed on the inclined surface 17 thereof.

In the present embodiment, the filter 8 is a substantially disk-shaped porous sintered filter, which is obtained by sintering and molding polyethylene particles having a size of about 50 microns.

In the present embodiment, the base portion 2a side of the socket 2 is a joint 12 having a male screw 13 on the outer peripheral surface, and the female screw (not shown) and the male screw provided on the air duster gun G side shown in FIG. 4 are used. By screwing, the air nozzle 1 is configured to be attached to the tip portion of the air duster gun G.

Next, the procedure for injecting air in the air nozzle 1 of the present embodiment will be described. By grasping the grip G1 in the air duster gun G and pulling the lever G2, the high-pressure air from the compressor (not shown) of the socket 2 It flows in from the base portion 2a side, and the air passes through the sintering filter 8 and enters the air inflow chamber 9. Then, in the air inflow chamber 9, the air is injected from the injection hole 11a at the tip opening of the air injection passage 11 through the narrow air injection passage 11 while maintaining the high pressure state of the air.

Then, by controlling the high-pressure air as described above, foreign substances and the like in the air are surely captured and removed by the filter 8, and only clean high-pressure air is injected in a quiet state.

As described above, the air nozzle according to the present invention has a structure in which a filter is interposed between the nozzle body and the socket, and unlike a conventional air nozzle, the configuration is not complicated and the filter is reliably used. Since it is set in the nozzle and can reliably capture and remove foreign matter, etc., and sufficient air injection is possible, it can be expected to be widely used in various fields.

1 Air nozzle 2 Socket 3 Nozzle body 4 Fitting recess 5 Female screw on the inner circumference of the fitting recess 6 Fitting tubular part 7 Male screw on the outer circumference of the fitting tubular part 8 Filter 9 Air inflow chamber 11 Air injection passage

INDUSTRIAL APPLICABILITY The present invention is an air nozzle used in various manufacturing industries, various service industries, and other industrial fields to inject high-pressure air from a tip portion to remove dust on the surface of machinery, products, etc., and to dry the dust. Regarding.

Various types of air nozzles have been developed so far. For example, a high-pressure nozzle unit including a filter injection rectification unit for adjusting air injection and an injection nozzle is incorporated in a housing, and the filter injection rectification unit is used. Those provided with a rectifier having a fluid guide surface for performing injection rectification of high-pressure air, an inlet filter, and the like are known.

Further, in the case where the porous filter is provided in the conduit of the injection fluid, in the ejection nozzle in which the porous filter is inserted in the conduit of the flow path tube main body, the closing nozzle provided at the tip of the flow path tube main body is provided. It is also known that a fluid ejection hole is formed in a coating film formed on a wall or the tip surface of the porous filter.

EP-A No. 3318336 Japanese Patent No. 5924655

Among the above-mentioned conventional injection nozzles, the former has a high-pressure nozzle unit equipped with a filter injection rectifier unit for adjusting air injection and an injection nozzle incorporated in the housing, and a rectifier, fluid guide surface, etc. inside the innermost part. In addition, since the structure is such that a plurality of constituent members are connected in a multi-layered manner at the outlet opening portion of the high-pressure air, there is a problem that a great deal of labor and cost are required for assembly and manufacturing. there were. Further, although the air nozzle has a filter structure, it cannot be expected to have a sufficient function of removing foreign matter.

On the other hand, the latter has a simple structure in which a porous filter is inserted into the conduit of the main body of the flow path, but the stability of the porous filter in the main body of the flow path is low, and it is suitable for injecting high-pressure fluid. Was not suitable.

An object of the present invention is to provide an air nozzle capable of reliably capturing foreign matter and the like without causing an increase or complexity of a fluid passage structure or constituent members.

The present invention according to claim 1 is an air nozzle having a socket into which air is sent from the base side and a nozzle body connected to the tip end side of the socket, and the nozzle body side portion of the socket has a portion. A fitting recess into which the nozzle body is inserted is formed, a female screw is formed on the inner peripheral surface of the fitting recess, and a fitting inserted into the fitting recess of the socket is formed on the socket side portion of the nozzle body. A combined tubular portion is provided, and a male screw to be screwed into a female screw in the fitting recess of the socket is formed on the outer peripheral surface of the fitting tubular portion, and the tip of the fitting tubular portion of the nozzle body and the socket are formed. A filter is interposed between the bottom of the fitting recess and either the outer peripheral surface of the fitting tubular portion of the nozzle body or the inner peripheral surface of the fitting recess of the socket that abuts on the portion. A concave groove is formed on one side, and a seal ring is fitted in the concave groove to seal the outer peripheral surface of the fitting tubular portion of the nozzle body and the inner peripheral surface of the fitting recess of the socket. It is characterized in that the base side of the is made of a joint .

According to the second aspect of the present invention, in the air nozzle according to the first aspect, a locking ridge is formed so that the tip portion of the socket abuts on the base side portion of the fitting tubular portion on the outer peripheral surface of the nozzle body. It is characterized by that.

According to the third aspect of the present invention, regarding the air nozzle according to the first or second aspect of the present invention , the nozzle body has a bottomed cylindrical air inflow chamber opened on the socket side and an outer periphery of the bottom of the air inflow chamber. It is provided with a plurality of air injection passages formed at predetermined intervals.

In the present invention according to claim 4, for the air nozzle according to any one of claims 1 to 3 , the tip portion of the nozzle body is formed into a sharp tapered shape, and an air injection passage is formed on the inclined surface thereof. It is characterized in that an injection hole at the tip is formed.

The present invention according to claim 5 has a substantially disk-shaped filter for the air nozzle according to any one of claims 1 to 4 .

The present invention according to claim 6 is the air nozzle according to any one of claims 1 to 5, wherein the filter is a sintered filter.

As described above, the air nozzle according to the present invention is an air nozzle having a socket into which air is sent from the base side and a nozzle body connected to the tip end side of the socket, and is a portion of the socket on the nozzle body side. Is formed with a fitting recess into which the nozzle body is inserted, a female screw is formed on the inner peripheral surface of the fitting recess, and the socket side portion of the nozzle body is inserted into the fitting recess of the socket. A fitting tubular portion to be fitted is provided, and a male screw to be screwed into a female screw in the fitting recess of the socket is formed on the outer peripheral surface of the fitting tubular portion, and the fitting tubular portion of the nozzle body is formed. Since the filter is interposed between the tip and the bottom of the fitting recess of the socket, the overall structure is not complicated and the number of constituent members is small. The air nozzle according to the present invention has a structure in which the filter is stably sandwiched between the nozzle body and the socket, so that foreign matter and the like can be reliably captured and removed, and when the air nozzle is used. The generation of noise can be effectively suppressed.

Further, a concave groove is formed on either the outer peripheral surface of the base of the fitting tubular portion of the nozzle body or the inner peripheral surface of the tip of the fitting recess of the socket that abuts on the portion, and a seal ring is formed in the concave groove. According to the air nozzle according to the present invention, which is fitted and covered so that the outer peripheral surface of the base of the fitting tubular portion of the nozzle body and the inner peripheral surface of the tip of the fitting recess of the socket are sealed, the nozzle body and the socket The airtightness at the joint with and can be enhanced.

Further, according to the air nozzle according to the present invention, in which a locking ridge is formed in which the tip portion of the socket abuts on the base side portion of the fitting tubular portion on the outer peripheral surface of the nozzle body, the nozzle body and the socket are connected. It's easier to do.

According to the air nozzle according to the present invention, in which the tip portion of the nozzle body is sharply tapered and the injection hole at the tip of the air injection passage is formed on the inclined surface thereof, noise reduction when using the air nozzle and air can be reduced. Both effects of jetting property are further improved.

According to the air nozzle according to the present invention in which the filter shape is a disk shape, it is possible to effectively obtain the catching and removing property of foreign matter and the like while ensuring the air flow velocity. In particular, the effect is enhanced in a sintered filter.

It is a vertical sectional view of the air nozzle which concerns on embodiment of this invention. It is a perspective view which shows the whole outer shape of the air nozzle of the same embodiment. It is an exploded perspective view of the air nozzle of the same embodiment. It is a side view which shows the use example which attached the air nozzle of the same embodiment to an air duster gun.

Next, an embodiment when the present invention is applied to an air nozzle for an air duster gun will be described with reference to the drawings, but the present invention is not limited to such an embodiment.

The air nozzle 1 according to the present embodiment has a socket 2 to which air is sent from the base portion 2a side and a nozzle body 3 connected to the tip end side of the socket 2, and is a nozzle body of the socket 2. A fitting recess 4 into which the nozzle body 3 is inserted is formed on the third side portion, a female screw 5 is formed on the inner peripheral surface of the fitting recess 4, and a socket 2 side portion of the nozzle body 3 is formed. A fitting tubular portion 6 to be inserted into the fitting recess 4 of the socket 2 is provided, and a female screw 5 in the fitting recess 4 of the socket 2 is provided on the outer peripheral surface of the fitting tubular portion 6. A male screw 7 to be screwed is formed, and a filter 8 is interposed between the tip of the fitting tubular portion 6 of the nozzle body 3 and the bottom portion 4a of the fitting recess 4 of the socket 2.

Further, in the present embodiment, the fitting tubular shape is provided for the base outer peripheral surface 6a of the fitting tubular portion 6 of the nozzle body 3 and the inner peripheral surface 4b of the tip portion of the fitting recess 4 of the socket 2 that abuts on the portion. A concave groove 14 is formed on the outer peripheral surface 6a side of the base of the portion 6, and the seal ring 15 is fitted in the concave groove 14 to seal the contact portion.

The concave groove 14 into which the seal ring 15 is fitted is formed not on the outer peripheral surface 6a of the base portion of the fitting tubular portion 6 of the nozzle body 3, but on the inner peripheral surface 4b of the tip portion of the fitting concave portion 4 of the socket 2. Is also good.

Further, in the present embodiment, a locking ridge 16 is formed so that the tip end portion of the socket 2 abuts on the base side portion of the fitting cylindrical portion 6 on the outer peripheral surface of the nozzle body 3.

Further, in the present embodiment, the nozzle body 3 has a bottomed cylindrical air inflow chamber 9 opened on the socket 2 side and a plurality of air injections formed on the outer periphery of the bottom 9a of the air inflow chamber 9 at predetermined intervals. It is provided with a passage 11.

Further, in the present embodiment, the tip portion 3a of the nozzle body 3 is formed in a sharp tapered shape, and the injection hole 11a at the tip of the air injection passage 11 is formed on the inclined surface 17 thereof.

In the present embodiment, the filter 8 is a substantially disk-shaped porous sintered filter, which is obtained by sintering and molding polyethylene particles having a size of about 50 microns.

In the present embodiment, the base portion 2a side of the socket 2 is a joint 12 having a male screw 13 on the outer peripheral surface, and the female screw (not shown) and the male screw provided on the air duster gun G side shown in FIG. 4 are used. By screwing, the air nozzle 1 is configured to be attached to the tip portion of the air duster gun G.

Next, the procedure for injecting air in the air nozzle 1 of the present embodiment will be described. By grasping the grip G1 in the air duster gun G and pulling the lever G2, the high-pressure air from the compressor (not shown) of the socket 2 It flows in from the base portion 2a side, and the air passes through the sintering filter 8 and enters the air inflow chamber 9. Then, in the air inflow chamber 9, the air is injected from the injection hole 11a at the tip opening of the air injection passage 11 through the narrow air injection passage 11 while maintaining the high pressure state of the air.

Then, by controlling the high-pressure air as described above, foreign substances and the like in the air are surely captured and removed by the filter 8, and only clean high-pressure air is injected in a quiet state.

As described above, the air nozzle according to the present invention has a structure in which a filter is interposed between the nozzle body and the socket, and unlike a conventional air nozzle, the configuration is not complicated and the filter is reliably used. Since it is set in the nozzle and can reliably capture and remove foreign matter, etc., and sufficient air injection is possible, it can be expected to be widely used in various fields.

1 Air nozzle 2 Socket 3 Nozzle body 4 Fitting recess 5 Female screw on the inner circumference of the fitting recess 6 Fitting tubular part 7 Male screw on the outer circumference of the fitting tubular part 8 Filter 9 Air inflow chamber 11 Air injection passage

Claims (7)

An air nozzle having a socket into which air is sent from the base side and a nozzle body connected to the tip side of the socket, and a fitting recess into which the nozzle body is inserted in the nozzle body side portion of the socket. A place is formed, a female screw is formed on the inner peripheral surface of the fitting recess, and a fitting tubular portion to be inserted into the fitting recess of the socket is provided on the socket side portion of the nozzle body and fitted. A male screw to be screwed into the female screw in the fitting recess of the socket is formed on the outer peripheral surface of the combined tubular portion, and the tip of the fitting tubular portion of the nozzle body and the bottom of the fitting recess of the socket are formed. An air nozzle with a filter in between. A concave groove is formed on either the outer peripheral surface of the base of the fitting tubular portion of the nozzle body or the inner peripheral surface of the tip of the fitting recess of the socket that abuts on the portion, and the seal ring is fitted in the concave groove. The air nozzle according to claim 1, wherein the outer peripheral surface of the base of the fitting tubular portion of the nozzle body and the inner peripheral surface of the tip of the fitting recess of the socket are sealed. The air nozzle according to claim 1 or 2, wherein a locking ridge is formed on the base side portion of the fitting tubular portion on the outer peripheral surface of the nozzle body so that the tip portion of the socket abuts. Claims 1 to claim, wherein the nozzle body includes a bottomed cylindrical air inflow chamber opened on the socket side, and a plurality of air injection passages formed at predetermined intervals on the outer periphery of the bottom of the air inflow chamber. The air nozzle according to any one of 3. The air nozzle according to any one of claims 1 to 4, wherein the tip portion of the nozzle body is tapered and an injection hole at the tip of the air injection passage is formed on the inclined surface thereof. The air nozzle according to any one of claims 1 to 5, wherein the filter has a substantially disk shape. The air nozzle according to any one of claims 1 to 6, wherein the filter is a sintered filter.

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