JP2016140339A - Spray pipe unit for liquid spray device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spray pie unit for a liquid spray device in which at least one of the connected pipes are a spray pipe where the connected pipes are detachably connected by pipe joints, in which the connected pipes can be easily and speedily jointed and detached accurately with no misalignment between the connected pipes.SOLUTION: A socket 11 and a plug 12 inserted into the socket 11 are provided. The connected pipes configuring a spray pipe unit 1 are connected using an insert-type pipe joint 10 that maintains an inserted state of the plug 12 with the socket 11 by inserting a sphere 11b into a locking groove 12b on a plug outer periphery. Also, a concave potion 14 and a convex portion 15 are formed on the socket 11 and the plug 12 on abutting faces thereof in such a manner that the concave and convex portions engage so as not to be relatively rotatable.SELECTED DRAWING: Figure 6

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tube unit of a liquid spraying device used for spraying agricultural chemicals and the like, and more particularly, to a tube unit that has been devised in a tube connection part by a pipe joint.
The term “injection tube connection portion” as used herein refers to an inflow tube connection portion (additional portion) separated in the longitudinal direction, or a connection portion of the injection tube to the injection tube support portion of the liquid spraying device.

  Examples of the prior art of the above-described liquid spraying device include those described in Patent Documents 1 and 2 below.

  These liquid spraying apparatuses are provided with a long nozzle tube having a plurality of nozzle holes. The longer the long tube, the harder it is to handle. Therefore, a long jet tube is divided into a plurality in the longitudinal direction and connected through a pipe joint.

FIG. 8 shows a conventional example of the connecting portion of the injection pipe by the pipe joint. In the illustrated tube unit 1B, the tubes 2 _-1 and 2 _-2 divided in the longitudinal direction are connected using a screw fastening type pipe joint 20.

The pipe joint 20 is attached to the liquid-tight by using a one噴管_{2 -1} and the other噴管₂ respectively _-2 O-ring 25 socket 21 and the plug 22, and, abutting surfaces of the socket 21 and the plug 22 A seal packing 23 interposed therebetween is combined, and a male screw is formed on the outer periphery of the tip of the socket 21.

Further, a cap nut 24 is mounted on the outer periphery of the plug 22 via a wire 26 so as to be rotatable at a fixed position. By screwing the cap nut 24 with a male screw on the outer periphery of the socket 21, the jet tube 2 _-1 , _2-2 are connected and fixed to each other.

  The cap nut 24 is a hexagon cap nut that can be firmly tightened.

JP 2014-103887 A JP-A-5-184990

  Since the screw fastening type pipe joint 20 described above requires tightening and unfastening the cap nut 24, it takes time and effort to connect and disconnect the injection tube, and the loss time of the liquid spraying operation becomes long.

  Finally, it is necessary to retighten the cap nut 24 and a retightening tool (spanner) is required.

  Furthermore, the cap nut 24 may be tightened only by tightening, but it is necessary to visually check the phase of the nozzle (nozzle) (mounting position in the circumferential direction) and prevent the positioning phase from shifting. With difficulty.

In addition, it is also necessary to pay attention to loss prevention of seal packing 23 when you are disconnected the噴管2 _-1, 2 _-2.

  In view of this, the present invention relates to a connection of a pipe to be connected to a pipe unit of a liquid spraying device in which at least one of the pipes to be connected is constituted by a jet pipe, and the pipes to be connected are detachably connected using a pipe joint. Therefore, it is an object of the present invention to make it possible to perform disconnection easily and quickly and to accurately perform phase alignment of connected pipes without deviation.

  In order to solve the above-described problems, in the present invention, at least one of the connected pipes is constituted by a jet pipe having a nozzle hole, and the connected pipes are detachably connected using a devised pipe joint. A spray tube unit of a spraying device is provided.

  The pipe joint used in the present invention includes a socket attached to one connected pipe and a plug attached to the other connected pipe and inserted into the socket. The built-in sphere is pushed and moved by the sleeve on the outer periphery of the socket biased by a spring to protrude toward the inner diameter side of the socket, and the protruding portion of the sphere is inserted into a locking groove provided on the outer periphery of the plug. This is a plug-in type pipe joint that keeps the insertion state of the socket in the socket, and a concave portion and a convex portion are formed on the mutual abutting surfaces of the plug and the socket so that the plug and the socket are fitted to each other so as not to rotate relative to each other. It has been done.

  The socket and the plug of the pipe joint are individually and liquid-tightly attached to the two connected pipes, and the connected pipe is detachably connected through the pipe joint.

  The present invention is applied to an injection tube unit having a configuration in which each of the longitudinally divided injection tubes each having an injection hole is connected to the connection tube (the divided injection tube) via a pipe joint. A particularly large effect can be expected, but the application target is not limited to this.

  One of the pipes to be connected is a nozzle having a nozzle, and the other is a nozzle without a nozzle provided with a liquid inlet provided in the nozzle support part of the liquid spraying device. Even if it is applied to the injection tube unit connected through the pipe joint, the effect of the invention is exhibited.

  Since the jet tube unit of the present invention connects the pipes to be connected via a pipe joint that combines a plug and a socket, the pipes to be connected can be connected and disconnected by a so-called one-touch operation. And save time.

  In addition, a tool such as a spanner is not required, simple connection and disconnection can be performed at the site of spraying the liquid, and management for preventing the seal member from being lost is not required.

  Furthermore, general plug-in type pipe joints that combine plugs and sockets have a structure in which the socket and plug are connected so that they can rotate relative to each other. Not available for

  On the other hand, in the pipe joint employed in the injection tube unit of the present invention, a concave portion and a convex portion are formed on the mutual abutting surfaces of the socket and the plug so as to be fitted to each other so as not to rotate relative to each other at a position where the phases of the plug and the socket are matched. It has become a thing.

  By using the pipe joint of this devised structure, the phase matching with the phase matching (positioning of the relative position in the circumferential direction) of the connected pipe is maintained, and the connection and disconnection work can be performed without difficulty.

It is a perspective view which shows the outline | summary of the whole of one form of the nozzle unit of this invention. It is a side view which shows the principal part of the jet tube unit of FIG. 1 in the state which disconnected the to-be-connected tube. It is the perspective view showing the front side of the socket of the pipe joint provided in the jet tube unit of FIG. It is the perspective view showing the front side of the plug of the pipe joint provided in the jet tube unit of FIG. FIG. 3 is a cross-sectional view showing a pipe joint provided in the nozzle unit of FIG. 2 in a disconnected state. It is sectional drawing which shows the pipe joint provided in the nozzle unit of FIG. 2 in the connection state. It is a side view which shows a part of other form of the nozzle unit of this invention. It is sectional drawing which shows the connection part by the pipe joint of the conventional jet tube unit.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a jet unit according to the present invention will be described below with reference to FIGS.

噴管unit 1 of Figure 1,噴管2 _-1 having longitudinally split each injection hole (nozzle) _3, 2 _-2, become those connected freely disconnected via the pipe joint 10 Yes.

One噴管2 _-1, tube provided with the connection portion 4噴管supporting portion of the liquid spraying device relative (not shown), and the other噴管_2-2, the end plug 5 the ends of the unconnected side in has become occluded tube, optionally a third噴管(which is not limited to one) shown in噴管2 _-1, further using a pipe joint 10 between _2-2 shirttail There can also be considered a jet tube unit having the structure described above, or a jet tube unit that connects the connecting portion 4 to the jet tube support portion of the liquid spraying device via the pipe joint 10.

  As shown in FIGS. 5 and 6 (refer to FIGS. 2 to 4 as well), the pipe joint 10 includes a socket 11, a plug 12 inserted into the socket, a plug insertion hole of the socket 11, and an outer periphery of the plug 12. A combination of seal members (O-rings in the figure) 13 for sealing between the two is used.

  A socket 11 of this pipe joint is attached to a first sleeve 11a having a radial through hole H, a sphere 11b that is slidably incorporated in the through hole H, and an axially slidable outer side of the first sleeve 11a. The second sleeve 11c, a first spring 11d that urges the second sleeve in the locking direction, a third sleeve 11e that is slidable in the axial direction inside the first sleeve, and the third sleeve The second spring 11f, which is weaker than the first spring 11d biased in the locking direction, is combined.

  For the assembly of the third sleeve 11e and the like, the first sleeve 11a is divided into two parts, screwed to the respective divided bodies, and further provided with a concave portion 14 that traverses the central portion in the radial direction on the tip surface. It has been.

On the other hand, the plug 12 has an engaging groove 12b, a flange 12c whose end face is abutted against the tip of the third sleeve 11e of the socket, and a diameter larger than that of the flange 12c. the flange 12d is provided, further, the abutting surfaces of the first sleeve 11a of the flange 12d,噴管_{2 -1,} a convex portion 15 that fits to conform to the concave portion 14 is provided at a position whose phase is aligned in _2-2 The thing is adopted.

  The flange 12d functions to close the opening of the second sleeve 11c in contact with the second sleeve 11c of the socket in the locked position.

  The “locking direction” referred to here refers to the direction in which the sphere 11b enters the locking groove 12b. The “lock position” refers to a position where the spherical body 11b enters the locking groove 12b and the connection state between the socket 11 and the plug 12 is maintained.

As for the recessed part 14 and the convex part 15, the recessed part 14 may be installed in the plug 12, and the convex part 15 may be installed in the socket 11, respectively.

In this pipe joint 10, the first sleeve 11 a of the socket is at the end of the connection side of one jet pipe 2 ₋₁ (or 2 ₋₂ ), and the plug 12 is the other jet pipe 2 ₋₂ (or 2 ₋₁ ). Are attached to the end of the connection side in a liquid-tight manner.

5, reference numeral 6 in FIG. 6, between the first sleeve 11a and噴管_{2 -1,} and each seal sealing ring between the plug 12 and the噴管_{2 -2,} 7,噴管2 _{- 1,} 2 are each caulking fixed clamping ring on the outer periphery of _-2.

  In the pipe joint 10, the connection between the socket 11 and the plug 12 is completed only by the operator pushing the portion 12 a of the plug 12 into the first sleeve 11 a of the socket. When the socket 11 and the plug 12 are separated, the operator pushes and moves the second sleeve 11c of the socket in the unlocking direction (rightward in FIG. 5) by hand, but it is not necessary to push the second sleeve 11c when connecting. is there.

  At this time, the flange 12c of the part 12a pushes the third sleeve 11e biased by the second spring 11f to the right in FIG. 5 while immersing the sphere 11b into the through hole H.

  Thereby, the spherical body 11b enters into the locking groove 12b which has moved to the corresponding position at the insertion end point of the plug. Therefore, the second sleeve 11c is returned to the lock position shown in FIG. The second sleeve 11c urged in the locking direction by the first spring 11d prevents the spherical body 11b from coming out of the locking groove 12b, so that the connected state of the socket 11 and the plug 12 is maintained.

  Further, when the second sleeve 11c of the socket is moved again to the unlock position, the restriction of the sphere 11b by the second sleeve 11c (blocking of movement outward in the radial direction) is released. Therefore, the plug 12 can be extracted from the socket 11 by applying a pulling force.

  At this time, the sphere 11b is pushed out of the locking groove 12b by the inclined back surface of the flange 12c, and the third sleeve 11e pushed and moved by the force of the second spring 11f moves to the position shown in FIG. This prevents the first sleeve 11a from protruding toward the inner diameter side.

  As described above, the illustrated pipe joint 10 can be connected and disconnected with a one-touch operation without a tool.

Further, the tube joint 10, the connecting pipe and caused to enter the convex portion 15 provided in the plug 12 into the recess 14 provided in the socket 11 (which figure噴管2 _-1 2 _-2) phase are aligned in the.

  Further, while the connection state between the socket 11 and the plug 12 is maintained, the fitting state between the concave portion 14 and the convex portion 15 is maintained and relative rotation between the socket 11 and the plug 12 is prevented.

  Therefore, the phase shift of the connected tubes does not occur. In addition, since the seal member 13 is disposed between the plug insertion hole of the socket 11 and the outer periphery of the plug 12, there is no fear of the seal member 13 falling off, and it can be seen in a conventional tube unit using a pipe joint. All defects are resolved.

  FIG. 7 shows another embodiment of the nozzle unit of the present invention. The jet tube unit 1A of FIG. 7 includes a jet tube support portion (a liquid distributor attached to an upright frame 9 so that the height position can be adjusted) 8 provided in a cart-type liquid spraying device, etc. The pipes 2 and 2 are provided, and the pipes 2 and 2 are connected to both sides of the pipe support part 8 through the pipe joint 10 described above.

  This tube unit 1A also needs to make the mounting direction (phase) of the tube 2, 2 with respect to the tube support portion 8 constant, and can be connected by a one-touch operation without a tool by adopting a devised tube joint 10, Effects such as separation, reliable phase alignment, and stable maintenance of the combined phase can be obtained.

1, 1A, 1B噴管units _{2,2 -1, 2 -2}噴管3 nozzle hole 4 connecting part 5 the end plug 6 the sealing ring 7 clamping ring 8噴管supports 9 frames 10 and 20 fitting 11 socket 11a first Sleeve 11b Spherical body 11c Second sleeve 11d First spring 11e Third sleeve 11f Second spring H Through hole 12 Plug 12a Part 12b to be inserted into socket Locking groove 12c, 12d 鍔 13 Seal member 14 Recess 15 Protrusion 21 Socket 22 Plug 23 Seal packing 24 Cap nut 25 O-ring 26 Wire rod

Claims (3)

At least one of the connected pipes is composed of a jet pipe (2) having a nozzle hole (3), and the connected pipes are detachably connected using a pipe joint (10),
The pipe joint (10) includes a socket (11) attached to one connected pipe and a plug (12) attached to the other connected pipe and inserted into the socket, the plug (12) The spherical body (11b) incorporated in the socket at the end point of insertion into the socket (11) is pushed and moved by the sleeve (11c) on the outer periphery of the socket urged by the spring (11d) to protrude toward the inner diameter side of the socket. (11b) is a plug-in joint that holds the plug (12) inserted into the socket (11) by allowing the protruding portion of (11b) to enter a locking groove (12b) provided on the outer periphery of the plug, A concave portion (14) and a convex portion that are fitted to the mutual butting surfaces of the socket (11) and the plug (12) so that they cannot be rotated relative to each other at a position where the phases of the plug and the socket are matched. (15) is formed,
A tube unit in which the socket (11) and the plug (12) are individually and liquid-tightly attached to a connected pipe. The pipes to be connected are jet pipes (2 ₋₁ , 2 ₋₂ ) divided in the longitudinal direction, each having a jet nozzle (3), and the jet pipes (2 ₋₁ , 2 ₋₂ ) are the pipes 2. The tube unit according to claim 1, connected via a joint (10).   One of the pipes to be connected is a nozzle (2) having a nozzle hole (3), and the other is a pipe without a nozzle having a liquid inlet provided in a nozzle support part of a liquid spraying device. The tube unit according to claim 1, wherein the tube (2) is connected to the left and right sides of the non-tube through the pipe joint (10).

Images