JP6594372B2 - Spray bottle using carbon jet tube - Google Patents

Description

  In this invention, a jet tube through which a spray liquid such as a drug is passed is formed of lightweight carbon fiber reinforced plastics (in the present invention, this jet tube is called a carbon jet tube), and the tip side of the carbon jet tube is straight. A liquid spray that is bent at a predetermined angle with respect to the base end side (the base side) and has a spray nozzle that is required to be relatively positioned in the spray direction on the outer periphery of the tip end and the base end side of the carbon jet tube It relates to a spray bottle for use.

  As a conventional example of a spray bottle having a plurality of spray nozzles, there is one as shown in FIG. In the spray tub, a plurality of spray nozzles (nozzle units) for spraying spray liquid are attached to the outer periphery of a straight jet tube having a liquid passage inside at predetermined intervals.

  Among these types of spray tubs, there are those that employ carbon jet tubes to meet the demand for weight reduction.

  The spray soot shown in FIG. 1 of Patent Document 1 does not particularly touch the material of the jet tube, but the jet tube is a straight tube without an external thread at the end. It is possible to employ a tube.

JP 2017-13039 A

  All of the long carbon jet tubes that are currently commercialized are straight tubes.

  Such a jet tube can be manufactured without problems, but the tip side is bent, has a male screw to attach the nozzle holder to the tip of the bent portion, and cannot be set on a processing machine such as an NC lathe The size of the tube cannot be manufactured because it cannot be threaded using a processing machine.

  Since there are manufacturing restrictions on this processing equipment, the front end side is bent and a carbon tube is provided with a male screw for attaching a nozzle holder to the end of the bent portion. A spray fountain provided with spray nozzles each requiring a relative positioning in the direction of spray on the outer periphery on the base end side is not considered to be feasible and has not been provided to the market.

  However, a lightweight spray bottle using a long jet tube having such a shape is indispensable in view of reducing the burden of spray work.

  Therefore, the present invention relates to a spray bottle having a jet tube having a straight proximal end and a bent distal end, and more specifically, relative positioning of the spray direction on the distal end of the jet tube and the outer periphery of the proximal end. As for the spray soot provided with a spray nozzle that requires the above, it is an object to adopt a carbon jet tube to reduce the overall weight. Further, the long jet tube is likely to warp due to its own weight or a reaction when the spray liquid is sprayed from the spray nozzle. Therefore, it is an object to prevent the warpage together.

  In order to solve the above-described problems, in the present invention, a jet pipe and a spray nozzle for jetting the spray liquid introduced into the jet pipe to the outside are provided, and the distal end side of the jet pipe is on a straight proximal end side. A spray bottle for liquid spraying, which is bent at a predetermined angle with respect to each other, the spray nozzles are respectively provided on the outer periphery of the front end and the base end of the jet tube, and the spray nozzles are relatively positioned in the spray direction. Was constructed as follows.

That is, the jet tube is provided corresponding to the distal end side bent tube provided with a male screw at the tip end for mounting the nozzle holder, the proximal end straight tube, the rear portion of the bent tube, and the front portion of the straight tube. A joint comprising a screw hole to be screwed and a male screw part screwed into the screw hole, and a lock sleeve to be screwed onto the outer periphery of the male screw part,
Each of the bent tube and the straight tube is formed of carbon fiber reinforced plastics,
The lock sleeve is positioned between the first socket part for inserting the rear side of the bent pipe, the second socket part for inserting the front part of the straight pipe, and the first socket part and the second socket part. An internal thread portion that is screwed into the external thread portion,
In a state where the male screw portion is screwed into the screw hole, the female screw portion of the lock sleeve is pressed against an end surface on the connection side of the pipe having the screw hole to stop relative rotation of the bent pipe and the straight pipe. did.

  A metal sleeve can be used as the lock sleeve, but a resin sleeve is desirable in view of further weight reduction of the spray bottle.

  There may be one or more spray nozzles provided on the outer periphery of the straight pipe. The spray nozzle is preferably removable because it can be replaced when damaged.

  The spray bottle of the present invention includes an operation stick that an operator holds and operates by hand, and the jet tube can be connected to the tip of the operation stick.

  Since the spray bottle of this invention employs a carbon nozzle, it can meet the demand for weight reduction. Further, since the carbon jet tube is excellent in strength, warpage due to its own weight or spray reaction is prevented.

  The carbon injection tube employed in the present invention eliminates manufacturing restrictions by making the bent tube on the distal end side independent of the straight tube on the proximal end side.

  The bending tube on the front end side has such a length that the rear side does not interfere with the processing machine when the bending tube is set on a processing machine such as an NC lathe to perform threading processing on the front end. As for the bent tube that also performs threading on the rear end, the front side also has a length that does not interfere with the processing machine when threading the rear end.

  The bent tube on the distal end side and the straight tube on the proximal end side are connected to each other. The connection must be such that the spray nozzles can be positioned relative to each other at the tip of the bent tube and the outer periphery of the straight tube.

  For connecting pipes, the method of screwing the male threaded portion into the threaded hole is the easiest way to ensure the reliability of the connection. In this method, it is not guaranteed that the relative positions in the circumferential direction of the two pipes are correctly determined at the screwing end point of the male screw portion with respect to the screw hole. In addition, if a bending force acts on the connecting portion of the two pipes, there is a high possibility that the screw fitting portion is damaged.

  The spray bottle according to the present invention eliminates the above two concerns by providing the lock sleeve, and performs relative positioning in the spray direction of the spray nozzle provided on the outer periphery of the distal end and the proximal end, Straight pipes can be connected with screws.

  The lock sleeve is screwed into the male screw portion, and the male screw portion screwed into the screw hole can be prevented from rotating by using the lock sleeve as a lock nut.

  The male screw part is screwed into the screw hole to the vicinity of the screwing end point, and the circumferential relative position of the bent pipe and the straight pipe is positioned near the screwing end point (the spraying direction of the spray nozzle provided in these pipes) To correct the deviation).

  Thereafter, the lock sleeve is rotated in the loosening direction and pressed firmly against the end face of the tube on the side where the screw hole is provided.

  With the reaction force at this time, the female thread portion of the lock sleeve is pressed against the thread of the male thread portion of the mating partner, and thereby the lock sleeve is prevented from rotating by the frictional force generated between the bent tube and the straight tube, The spray nozzles provided on the bent pipe and the straight pipe are fixed at the positions where they are positioned.

  Further, in this state, the rear part of the bent pipe and the front part of the straight pipe are respectively inserted into the first socket part and the second socket part provided in the lock sleeve. The force applied from the side is received by the lock sleeve, and the screw fitting portion is not damaged by the bending force.

  In addition, the spray rod including the operation rod can extend the distance from the operator to the spray nozzle by connecting a carbon jet tube to the tip of the operation rod. Can be sprayed.

It is a side view which shows an example of the spray bottle of this invention. It is an enlarged side view which shows the principal part of the spray bowl of FIG. It is an expanded sectional view of the front end side of the spray tub of FIG. It is an expanded sectional view of the spray nozzle provided in the front-end | tip of the spray tube of the spray tank of FIG. It is an expanded sectional view of the spray nozzle provided in the outer periphery of the straight part of the spray tube of the spray tank of FIG. It is sectional drawing which shows the connection state before performing the mutual fixation by the lock sleeve of the bending pipe | tube of the front end side of the jet tube employ | adopted by this invention, and the straight pipe | tube of a base end side. It is a front view of the injection tube employ | adopted by this invention. It is sectional drawing which shows the state after fixing the connection part of a jet tube with a lock sleeve.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a spray tub using a carbon jet tube of the present invention will be described based on FIGS. 1 to 8 of the accompanying drawings.

  As shown in FIGS. 1 and 2, an exemplary spray tub 1 includes a jet pipe 2 through which a spray liquid passes, spray nozzles 3 and 4 for jetting the spray liquid introduced into the jet pipe, and a jet pipe 2. The operation rod 5 connected to the rear end is combined.

  The jet tube 2 is a carbon jet tube formed of carbon fiber reinforced plastics, and has a male screw 6 (see FIGS. 3 and 4) for mounting a nozzle holder at the tip. The jet tube 2 is formed with a bent tube 2a on the distal end side and a straight tube 2b on the proximal end side, and the bent tube 2a is formed with respect to the straight tube 2b on the proximal end side as shown in FIG. Angle α is bent.

  The bent tube 2a can be manufactured by a method such as bending it so as to have a predetermined curvature and storing it in a mold, then heat-curing the resin, and then removing the mandrel.

  The bent tube 2a manufactured in this way can be freely set in the length on the rear side, and the length on the rear side is set so as not to interfere with a processing machine such as an NC lathe. It is possible to perform threading without any trouble.

  The bent tube 2a shown in the drawing has a length on the front end side that does not interfere with a processing machine such as an NC lathe in threading at the rear end.

  The straight tube 2b on the proximal end side of the jet tube 2 can be manufactured by a known sheet winding molding method or a pultrusion molding method.

  As shown in FIGS. 3, 6, and 8, the bent tube 2a and the straight tube 2b of the jet tube 2 are provided with a screw hole 7a provided corresponding to the abutting portion between them and a male screw screwed into the screw hole 7a. They are connected to each other using a joint 7 composed of a portion 7b.

  The illustrated jet tube 2 is provided with a screw hole 7a at the front portion of the straight tube 2b and a male screw portion 7b at the rear portion of the bent tube 2a. However, the installation positions of the screw hole 7a and the male screw portion 7b are replaced with each other. It does not matter.

  The jet tube 2 includes a lock sleeve 8 that is screwed onto the outer periphery of the male screw portion 7b. As shown in detail in FIGS. 6 and 8, the lock sleeve 8 has a first socket portion 8a for inserting the rear side of the bent tube 2a (a front side of the male screw portion 7b) and a front portion of the straight tube 2b. And a second socket portion 8b and a female screw portion 8c. The female screw portion 8c is located between the first socket portion 8a and the second socket portion 8b.

  The lock sleeve 8 is made of a high-strength resin such as polyacetal. The lock sleeve 8 is used by being screwed into the male screw portion 7b of the joint 7 in advance.

  The spray nozzles 3 and 4 are provided at the tip of the bent tube 2a of the jet tube 2 and the outer periphery of the straight tube 2b, respectively.

  As shown in FIGS. 3 and 4, the spray nozzle 3 at the tip of the bent tube 2 a is held by the nozzle holder 9 by screwing a nozzle holder 9 into a male screw 6 provided at the tip of the bent tube 2 a.

  The spray nozzle 3 includes a filter 3 a, a union nut (cap) 3 b screwed into the nozzle holder 9, a lock nut 3 c that prevents the union nut 3 b from rotating, and a jet plate that is fastened with the union nut 3 b and fixed to the tip of the nozzle holder 9. A combination of the holder 3d, the injection plate 3e held by the injection plate holder 3d, and the packing 3f that is sandwiched between the injection plate holder 3d and the nozzle holder 9 and fixes the filter 3a in place is illustrated.

  The nozzle plate 3e has a nozzle hole in the center, and the spray liquid introduced into the nozzle tube 2 is atomized from the nozzle hole and sprayed to the outside. The spray nozzle 3 can be replaced with a spray nozzle having another known structure.

  As the spray nozzle 4 on the outer periphery of the straight pipe 2b, the one proposed by the present applicant in the aforementioned Patent Document 1 is provided.

  As shown in FIG. 5, the spray nozzle 4 includes a lower clamp 4 a that can be hugged on the outer circumference of the straight pipe 2 b of the jet tube 2, an upper clamp 4 b that can be hugged on the remaining half of the outer circumference of the jet tube 2, and a lower clamp 4 a and an upper It has a fastening member (not shown) which fixes the clamp 4b to each other.

  In addition to these, a filter 4c, a union nut (cap) 4d screwed into the lower clamp 4a, a lock nut 4e that prevents the union nut 4d from rotating, a nozzle plate 4f having a nozzle hole, and a nozzle plate piece that integrates the nozzle plate holder 4g. 4h, a packing 4i that is sandwiched between the spray plate holder 4g and the lower clamp 4a and fixes the filter 4c in a fixed position, and an O-ring 4j are combined.

  The lower clamp 4a, the upper clamp 4b, and the fastening member serve as a holder for holding the nozzle piece 4h in a fixed position.

  The nozzle hole piece 4h is formed by integrating a nozzle plate 4f having a nozzle hole and a nozzle plate holder 4g, and is fastened by a union nut 4d and fixed to the tip of the lower clamp 4a.

  The nozzle mounting portion of the jet tube 2 is provided with a through hole 2c having a small hole as illustrated (see FIGS. 3 and 5). As shown in FIG. 5, a cylindrical insertion portion 4k provided in the lower clamp 4a is inserted into the through hole 2c, and the periphery of the cylindrical insertion portion 4k is liquid-tightly sealed by the O-ring 4j. .

  Thereby, the spray liquid introduced into the injection pipe 2 flows into the installation part of the injection hole piece 4h via the internal passage of the lower clamp 4a, and is injected outside from the injection hole of the injection plate 4f.

  The spray nozzles 4 provided on the outer periphery of the straight pipe 2b may be plural as shown in FIGS. 1 and 2, or may be only one. The spray nozzle 4 may also be a nozzle having another known structure. As long as the holder attached to the outer periphery of the straight tube 2b and the spray plate supported by the holder are provided, the structure can be adopted even if it is not an example.

  As shown in FIG. 6, the lock sleeve 8 is screwed into the root side of the male screw portion 7b, and the lock sleeve 8 works as a lock nut to prevent the male screw portion 7b screwed into the screw hole 7a from rotating.

  The bent pipe 2a and the straight pipe 2b are connected by screwing the male thread portion 7b into the screw hole 7a to near the screwing end point, and positioning the relative position in the circumferential direction between the bent pipe 2a and the straight pipe 2b near the screwing end point. The misalignment of the spray direction of the spray nozzles 3 and 4 provided in these tubes is corrected.

  FIG. 7 shows a state where the positioning of the relative positions in the circumferential direction of the bent tube 2a and the straight tube 2b is finished. When positioning the circumferential relative position, as shown in FIG. 6, the lock sleeve 8 is moved as close to the root of the male screw portion 7b as possible.

  After correcting the deviation of the spraying direction of the spray nozzles 3 and 4, as shown in FIG. 8, the lock sleeve 8 is then rotated in the loosening direction (the direction away from the male threaded portion 7b) and the screw hole 7a is provided. The tube is strongly pressed against the end face of the tube (the straight tube 2b in the figure).

  With the reaction force at this time, the female screw portion 8c of the lock sleeve 8 is pressed against the thread of the male screw portion 7b with which the lock sleeve 8 is screwed. As a result, the lock sleeve 8 is prevented from rotating by the frictional force generated between the bent tube 2a and the straight tube 2b, and the spray nozzles 3 and 4 are fixed at positions that maintain the correct relative posture.

  When the connection between the bent tube 2a and the straight tube 2b and the fixing of the relative positions of the spray nozzles 3 and 4 are completed, the rear portion of the bent tube 2a is connected to the first socket portion 8a of the lock sleeve 8, and the straight tube. The front part of 2b is inserted in the state which adapted to the 2nd socket part 8b, respectively.

  Therefore, the force applied from the side to the connection portion between the bent tube 2a and the straight tube 2b is received by the lock sleeve 8, and the fitting portion between the screw hole 7a and the male screw portion 7b is not damaged by the bending force.

Here, when the spray nozzle 4 provided on the outer periphery of the straight pipe 2b is an example,
The bent pipe 2a and the straight pipe 2b are connected by a method of screwing the male thread portion 7b to the screwing end point in the screw hole 7a, and then the through-hole 2c corresponding to the direction of the spray nozzle 3 is opened in the straight pipe 2b. It is also possible to adopt a method of wearing.

  According to this method, the bending tube 2a and the straight tube 2b can be connected with screws without using the lock sleeve 8, and the request for positioning the relative positions of the spray nozzles 3 and 4 can be met. Sexual deterioration is inevitable. Further, protection of the fitting portion between the screw hole 7a and the male screw portion 7b cannot be expected.

  According to the spray bottle 1 of the present invention using the lock sleeve 8, such a problem is also eliminated.

  The illustrated spray bottle 1 is a long bottle connected to the tip of the operation stick 5 so that the injection tube 2 is added. This long spray tub can extend the distance from the operator to the spray nozzles 3 and 4, and can stably spray liquids in fields, paddy fields, and the like.

  The illustrated operating rod 5 has a grip 5a that an operator holds. The operation rod 5 may be either a rod formed of a metal such as stainless steel or a rod formed of fiber reinforced plastics. The operation rod 5 is preferably formed of a pipe because an increase in weight is suppressed.

  The operation rod formed by the pipe can be used as a liquid passage that has an internal hole leading to the inside of the jet tube. The supply of the spray liquid to the jet tube 2 is a hose (not shown) at the rear of the jet tube 2. Can be connected via the hose.

  Both the form using the hole inside the operation rod 5 as the liquid passage and the form supplying the spray liquid to the injection tube 2 via the hose are valves for switching between supply and stop of the spray liquid near the root of the operation rod 5 (This is also not shown) is preferably installed.

DESCRIPTION OF SYMBOLS 1 Spraying bowl 2 Jet pipe 2a Bending pipe (alpha) Bending angle | corner 2b Straight pipe 2c Through-hole 3, 4 Spray nozzle 3a Filter 3b Union nut 3c Lock nut 3d Jet plate holder 3e Jet plate 3f Packing 4a Lower clamp 4b Upper clamp 4c Filter 4d Union nut 4e Lock nut 4f Injection plate 4g Injection plate holder 4h Injection hole piece 4i Packing 4j O-ring 4k Cylindrical insertion part 5 Operation rod 5a Grip 6 Nozzle for mounting the nozzle holder 7 Joint 7a Screw hole 7b Male screw part 8 Lock sleeve 8a 1st socket part 8b 2nd socket part 8c Female thread part 9 Nozzle holder

Claims (3)

It has a spray tube (2) and a spray nozzle (3, 4) for spraying the spray liquid introduced into the tube (2) to the outside, and the distal end side of the spray tube (2) is a straight proximal end side The spray nozzles (3, 4) are respectively provided on the outer periphery of the nozzle tube (2) at the front end and the base end side, and the spray direction of the spray nozzle (3, 4) A spray fountain for spraying a liquid in which relative positioning of
The jet tube (2) includes a bent tube (2a) on the distal end side provided with a male screw (6) for mounting the nozzle holder, a straight tube (2b) on the proximal end side, and the bent tube (2a). A joint (7) comprising a screw hole (7a) provided corresponding to the rear part and the front part of the straight pipe (2b) and a male screw part (7b) screwed into the screw hole (7a), and the male screw part (7b) And a lock sleeve (8) to be screwed onto the outer periphery of
Each of the bent pipe (2a) and the straight pipe (2b) is formed of carbon fiber reinforced plastics,
The lock sleeve (8) includes a first socket part (8a) for inserting a rear side of the bent pipe (2a), a second socket part (8b) for inserting a front part of the straight pipe (2b), A female screw portion (8c) positioned between the first socket portion (8a) and the second socket portion (8b) and screwed into the male screw portion (7b);
The female screw portion of the lock sleeve (8) in a state where the male screw portion (7b) is screwed into the screw hole (7a) and the spray nozzle (3, 4) is relatively positioned in the spray direction. (8c) is pressed against the end face on the connection side of the pipe having the threaded hole (7a), and a carbon jet pipe configured to stop relative rotation of the bent pipe (2a) and the straight pipe (2b) is used. There was spray mist.   The spray bottle using the carbon nozzle according to claim 1, wherein the lock sleeve (8) is a resin sleeve.   An operation rod (5) that is held and operated by an operator by hand is included, and the carbon tube according to claim 1 or 2, wherein the tube (2) is connected to a tip of the operation rod (5). The sprayer used.

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