JP2883956B2 - Control nozzle device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a nozzle device for control, and more particularly to a nozzle device suitable for controlling fruit trees and agricultural crops.

(Prior art) In general, control of fruit trees and agricultural crops is carried out by using a spraying nozzle that sprays a control solution in a mist state and a direct spray nozzle that sprays the control solution directly. The method is roughly divided into

When controlling with an atomizing type nozzle, since the atomizing type nozzle has a short reach of the controlling solution, it is assembled to, for example, a speed sprayer equipped with a fan to remove the controlling solution from the nozzle to the fan. To increase the reach, or to be arranged in a boom on a boom sprayer to control a wide area.

In the case of controlling with the direct-type nozzle, the direct-type nozzle is, for example, as shown in Japanese Utility Model Publication No. 53-19449, a rotating body having an eccentric axis, and a rotation center line orthogonal to the rotating body. A main nozzle directed in the direction of rotation, and an impeller supported by the sub-nozzle and the eccentric shaft and rotated by the control liquid pressure from the sub-nozzle. The rotation of the impeller rotates the rotating body. Used as the main nozzle in the sprinkler described above. The main nozzle of this conventional sprinkler is rotatably supported by the rotating body, interlocks with the rotation of the impeller via a gear mechanism, and rotates and revolves around the upper side of the fruit tree. From a wide range.

(Problems to be Solved by the Invention) However, those in which the atomizing type nozzle having a short reaching distance of the controlling liquid is mounted on a speed sprayer to control the noise are high in noise caused by the fan and an engine driving the fan. Therefore, there is a problem of noise pollution, and in the case of controlling the atomization type nozzle by assembling it with a boom sprayer, a large amount of the control liquid is scattered by natural wind, and
When the ground height of the boom is lowered to reduce this scattering, when the wheel of the boom sprayer falls into a concave part of the ground and the whole is inclined, the tip of the boom comes in contact with the crop and damages the crop. There was a problem.

In the case of controlling the direct injection nozzle having a long reaching distance of the control liquid by assembling the sprinkler with a sprinkler, since the control liquid is directly sprayed at a high pressure, if the control liquid directly hits an object to be controlled. It is necessary to set the angle so that it does not occur, and depending on the installation method, it will collide continuously with one part of the object to be controlled, the impact force on the object to be controlled is too large, branches and leaves, fruits etc. There was a problem that hurt. The main nozzle of the conventional sprinkler described above is configured to rotate separately from the revolution. However, since the rotation of the main nozzle is performed by forcibly rotating the gear through a gear mechanism, the number of the rotation is at most a few. It can be rotated only to about 10 rpm, and the impact force on the object to be controlled is considerably large, and there is a problem that the leaves, fruits, etc. are damaged.

The present invention has been made in view of the above problems, and an object of the present invention is to make it possible to lengthen the reach of a control solution and to reduce the impact force on an object to be controlled while controlling a wide range.

Means for Solving the Problems According to the present invention, a nozzle body rotatably supported by a liquid supply member having a liquid supply passage communicating with a pressurized liquid source, and an outer periphery surrounding the nozzle body are provided. The nozzle body includes a nozzle body, and a base end of the nozzle body communicates with the liquid supply path to inject the control liquid, and a tip end part thereof is biased and inclined in a rotational direction with respect to a rotation center of the nozzle body. In the control nozzle device provided as described above, the jacket tube is capable of moving forward / backward in the length direction of the rotation center line of the nozzle body.

(Action) The control liquid supplied from the pressurized liquid source to the liquid supply path of the liquid supply member is directly injected from the injection path of the nozzle body, and the reaction force due to the injection causes the reaction force of the injection path to be increased. Acting in the direction opposite to the tilt direction, the nozzle body rotates with respect to the liquid supply member, and due to the rotation of the nozzle body, the control liquid draws a spiral trajectory and further entrains the surrounding air to generate an air flow. It moves while letting it go. Therefore, the control liquid instantaneously and intermittently collides with each part of the control target, and the impact force on the control target is small.

(Example) In the drawing, (1) is a liquid supply member (hereinafter referred to as a support member) having a liquid supply passage (11) for receiving a high-pressure control liquid from a high-pressure pump serving as a pressurized liquid source. Side is a large-diameter mounting part (12), the other end is a small-diameter support part (13),
The support portion (13) rotatably supports a nozzle body (2) having an annular passage (21) communicating with the liquid supply passage (11), and the nozzle body (2) is mounted on the nozzle body (2). A direct injection path (3) is provided which is directed in the same direction as the rotation center line (X) of 2), and at least the tip side of which is deviated in the radial direction with respect to the rotation center line (X). The tip side of 3) is inclined in the rotation direction of the nozzle body (2) with respect to the base end side, and the high-pressure control liquid supplied to the liquid supply path of the support member (1) is discharged from the injection path (3). The nozzle body (2) is rotated at high speed by the reaction force of the injection, and the control liquid is injected in a spiral trajectory.

The nozzle body (2) is formed in a cylindrical shape having a through-hole at the center, and the annular passage (21) is provided at an intermediate portion in the longitudinal direction of the through-hole. A holding hole (22) is provided over the end surface at an inclination angle of 13 ° with respect to the rotation center line (X) and at an inclination angle of 10 ° in the rotation direction of the nozzle body (2). By fitting the nozzle tip (3a) having the injection path (3) at the center thereof to (22), the injection path (3) directed in the same direction as the rotation center line (X) is formed. Inclined at 13 ° in the radial direction with respect to the rotation center line (X) and at 10 ° in the rotation direction,
When a high-pressure control liquid is injected from the injection path (3), the reaction force due to the injection acts in the direction opposite to the direction of inclination of the injection path (3) (counterclockwise direction in FIG. 2), and the nozzle body ( 2)
Rotates at high speed with respect to the support member (1), and the high-speed rotation causes the control liquid to draw a spiral trajectory. The rotation speed of the nozzle body (2) is set to 1000 to 10,000 rpm, preferably 2500 to 8000 rpm, depending on the inclination angle of the injection path (3) in the rotation direction, the injection pressure and the discharge amount from the injection path (3). It is.

Further, by inclining the injection path (3) in the radial direction and the rotation direction as described above, the control liquid can be injected in a hollow cone shape at a predetermined injection angle (θ). It is possible to achieve a predetermined injection angle only by eliminating the inclination in the radial direction, that is, making it parallel to the rotation center line (X) and inclining in the rotation direction.

The injection path (3) may be formed directly from the nozzle body (2) without the nozzle chip (3a).

An outer cylinder (4) having an open end is provided on the outer periphery of the nozzle body (2) so as to be able to advance and retreat in the longitudinal direction of the rotation center line (X). As shown in FIG. 1, by retracting the control liquid from the injection path (3) so as not to hit it, the spiral path of the control liquid becomes hollow (holo-cone) and the outer casing (4) is As shown in FIG. 5, a part of the control liquid from the injection path (3) is advanced to such an extent as to be reflected on the inner surface of the front end portion, so that the spiral trajectory of the control liquid becomes solid (full cone). .
Also, this jacket (4) has a bottom (41) on the base end side,
When an air intake hole (42) is provided in the bottom portion (41) and the control liquid is injected from the injection path (3), the inside of the outer cylinder (4) becomes negative pressure and the air intake Air may be introduced into the jacket tube (4) from the inlet hole (42) and further discharged from the opening at the distal end so that the spiral locus can be rectified around the control liquid. In addition, the said jacket cylinder (4)
Although the proximal end and the distal end are separately formed and screwed together, they may be integrally formed. Further, a screw hole (43) is provided on the base end side of the jacket tube (4), and this screw hole is screwed to the distal end of the liquid sending member (5), so that the mounting portion ( 12) is fixed to the liquid sending member (5).

Reference numeral (6) in the drawing denotes a mounting screw that is screwed to the tip of the support member to prevent the nozzle body (2) from falling off.

The present invention is configured as described above. The high-pressure control liquid supplied from the pressurized liquid source such as a high-pressure pump to the liquid supply path (11) of the support member (1) via the liquid supply member (5) is: It is jetted directly from the jet path (3) of the nozzle body (2).

Thus, the injection path (3) has a high pressure of high pressure because its distal end is deviated in the radial direction with respect to the rotation center line (X) and is further inclined with respect to the base end in the rotational direction of the nozzle body (2). When the control liquid is injected from the injection path (3), the reaction force due to the injection acts in a direction opposite to the inclination direction of the injection path (3), and the nozzle body (2) is supported by the support member (1). It rotates at high speed.

Then, by the high-speed rotation of the nozzle body (2), the controlling liquid draws a spiral trajectory as shown in FIG. 3, and moves in the spraying direction while entraining the surrounding air to generate an air flow. Further, the control liquid is divided into a large number of particles by the air resistance in the spray direction, and the particles move on the air flow. Incidentally, the nozzle body (2)
Is rotated at 3000 rpm, the particles moving in the spiral locus on one part of the object to be controlled are 0.02 seconds (60 seconds / 300 seconds).
Every 0 rpm) will cause an instantaneous collision. (In this case, the nozzle main body makes one rotation in 0.02 seconds.) Therefore, the impact force on the object to be controlled is very small. Further, the particles are carried in the jetting direction on the direct swirling airflow, so that the reaching distance can be lengthened.

Further, the control liquid supplied to the nozzle body (2) can be sprayed from the spray path (3) at a predetermined spray angle (θ) as described above, and the spray angle (θ) and the high-speed rotation of the nozzle body can be controlled. As shown in Fig. 4, it can be sprayed in the shape of a hollow cone.
The amount of particles that collides with one portion of the object to be controlled at one time is reduced, and the impact force on the object to be controlled can be further reduced. The diameter of the injection path (3) was 2 mm, and the injection angle (θ) was φ120 mm at the injection distance of 0.2 m, φ200 mm at 0.5 m, φ400 mm at 0.5 m, and 400 mm at 1 m, as shown in FIG. The cross-sectional area of the liquid path at each injection distance when φ600 mm is set is as shown in the following table.

Comparing this with the cross-sectional area of the liquid path at each injection distance of the non-rotating direct injection type nozzle (conventional product) shown in FIG.
2 times, the cross-sectional area becomes 44 times at 2 m, and in the case of the full cone of the present invention, the cross-sectional area becomes 64 times at 1 m and 144 times at 2 m compared to the conventional product. As a result, the amount of particles of the control liquid thus dispersed is dispersed, so that the amount of particles colliding with one portion of the control target can be reduced.

In addition, since the control liquid sprayed from the injection path (3) draws a spiral trajectory and entrains the surrounding air and moves in the spray direction while generating an airflow, for example, when the control liquid collides with a trunk or a branch of a fruit tree. However, the collided control liquid goes around the trunk and moves in the spraying direction. Therefore, the reaching distance of the control solution can be increased without being disturbed by the trunk or the like. In addition, since the particles are carried on the airflow of the spiral trajectory, the branches and leaves of the object to be controlled can be shaken, so that the control solution can be attached to both the front and back surfaces of the leaves, and the control effect can be enhanced. You can.

The nozzle shown in FIGS. 6 and 7 is basically the same as the nozzle shown in FIG. 1, but in these FIGS. 6 and 7, the annular passage (21) is connected to the nozzle body. Inclined side surface (21a) (21b) that inclines outward from the inner peripheral surface in the axial direction
Formed into a trapezoidal cross section with
a) Of (21b), one inclined side (21a) in Fig. 6
The injection path (3) is formed from a position in the vicinity of
When used in the vertical downward direction, the slurry (stone powder) in the controlling liquid such as a wettable powder is prevented from accumulating inside the annular passage (21), and in FIG. When the injection path (3) is formed from a position near the side surface (21b) and the nozzle is used facing upward in the vertical direction,
While preventing the slurry (stone powder) in the control liquid such as a wettable powder from accumulating inside the annular passage (21), a plurality of annular grooves (in the inner peripheral surface of the nozzle body (1)) are formed. 23). By providing the annular groove (23), the slurry in the control liquid can enter a small gap between the inner peripheral surface of the nozzle body (2) and the outer peripheral surface of the support member (1). Even if there is, this slurry can be stored, and the controlling liquid that has entered the small gap can be stored and lubricated with water.

In FIG. 7, the injection path (3) is inclined by 25 ° with respect to the rotation center line (X) of the nozzle body (2) to increase the injection angle. The injection path (3) is inclined by 45 ° with respect to the rotation center line (X) so as to further increase the injection angle so that a wide range of control can be performed. The nozzle is twisted by the high-speed rotation of the nozzle body (2) to make it easy to atomize.

The nozzle formed as shown in FIG. 1 is mainly attached to the rotating body (71) of the sprinkler (7) as shown in FIG. 8, and the nozzle formed as shown in FIG. As shown in the figure, the nozzle is mounted on a nozzle lance (81) of a speed sprayer (8) having no fan and an engine for driving the fan. The nozzle formed as shown in FIG. The nozzle body (2) is attached to the boom (91) of the boom sprayer (9) as described above, and the control liquid supplied from a pressurized liquid source such as a pump is jetted from the jetting path (3). Rotate to control fruit trees and crops.

Therefore, in the case of controlling the sprinkler (7) by assembling the sprinkler (7), even if spraying a control solution from right beside the fruit tree or from the lower side of the fruit tree, the control can be performed without damaging the branches and leaves, fruits and the like. is there.

Further, when the control is performed by assembling with the speed sprayer (8), since there is no noise due to the fan and the engine that drives the fan as in the related art, noise pollution can be eliminated.

Further, in the case of assembling and controlling the boom sprayer (9), the amount of the control liquid scattered by natural wind can be reduced, and the boom (91) can be controlled by increasing the height above the ground. Even when the wheel of (9) falls into the concave portion of the ground and is entirely inclined, the boom (91) can be prevented from coming into contact with the crop.

The sprinkler (7) shown in FIG. 8 includes a rotating body (71) and an impeller (72) having a number of blades provided on the outer periphery on the upper end side of a liquid feed pipe (70) extending vertically. While being rotatably supported, the rotating body (71) is interlocked with the rotation of the impeller (72) via a rotating gear mechanism (73), while the rotating body (71) is connected to the support member (1). With an eccentric shaft (74),
The eccentric shaft (74) is provided with a rotation nozzle (75) for injecting the impeller (72) and rotating the impeller (72). The rotation of the rotating body (71) causes the nozzle to rotate. The main body (2) is caused to rotate while revolving.

The speed sprayer (8) shown in FIGS. 9 to 11 includes a carriage (80), a driving device (82) for traveling, and a liquid tank (83).
And a high-pressure pump device (not shown) for sucking and pressurizing the control liquid in the liquid tank.
0) At the rear part, a substantially ring-shaped nozzle lance (81) communicating with the pump device is provided, and a plurality of the liquid sending members (5) are attached to the nozzle lance (81) at predetermined intervals,
The support member (1) is attached to these liquid sending members (5),
The control liquid is sprayed upward and downward and obliquely upward.

The boom sprayer (9) shown in FIGS. 12 to 14 is mounted on the tractor (A) and has a liquid tank (92).
A communication passage (93) communicating with the pump device at a rear portion of a frame (90) equipped with a high-pressure pump device (not shown) for sucking and pressurizing the control liquid in the liquid tank. A boom (91) is provided so as to be able to move up and down, a plurality of the liquid sending members (5) are provided at predetermined intervals on the boom (91), and the support member (1) is attached to the liquid sending members (5). The control liquid is sprayed downward in the vertical direction.

In the embodiment described above, one injection path (3) is provided in the nozzle body (2), but two or more injection paths may be provided. When the tip end of the injection path (3) is inclined with respect to the base end in the direction of rotation of the nozzle body (2), the tip is inclined from the base end to the tip as shown in FIG. May be inclined from an intermediate position between the above.

(Effects of the Invention) As described above, the present invention provides a nozzle body (2) rotatably supported by a liquid supply member (1) having a liquid supply path for receiving a high-pressure control liquid from a pressurized liquid source. A direct injection path (3) is provided in which at least the distal end is deviated in the radial direction with respect to the rotation center line, and the distal end of the injection path (3) is positioned with respect to the base in the rotational direction of the nozzle body (2). The nozzle body (2) is rotated at a high speed by injecting the high-pressure control liquid supplied to the liquid supply path of the support member (1) from the injection path (3). Since the control liquid is sprayed in a spiral trajectory, the reaching distance of the control liquid can be lengthened, and the control liquid can be atomized while controlling over a wide range. The collision can be instantaneous and intermittent, and one of the Since the amount of particles colliding with the part can be reduced, the impact force on the object to be controlled can be extremely reduced.

In addition, the control liquid sprayed from the spray path (3) draws a spiral trajectory, entrains the surrounding air, generates airflow, and can move around the trunk or the like in the spray direction, so that it is not disturbed by the trunk or the like. Therefore, the reach of the control solution can be lengthened. In addition, since the particles are carried on the airflow of the spiral trajectory, the branches and leaves of the object to be controlled can be shaken, so that the control solution can be attached to both the front and back surfaces of the leaves, and the control effect can be enhanced. You can.

Further, by retracting the outer cylinder, the injection liquid can be spirally injected from the injection path without making contact with the outer cylinder, so that the spiral trajectory of the injection liquid is hollow (holo cone). In addition, by making the outer cylinder advance, a part of the injection liquid spirally injected from the injection path can be brought into contact with the outer cylinder and reflected into the spiral trajectory. The spiral trajectory of the liquid can be made solid (full cone).

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of the nozzle device of the present invention, FIG. 2 is a side view, FIGS. 3 and 4 are explanatory views of a jetting state, and FIG. Explanatory diagram of the sixth
FIG. 7 and FIG. 7 are explanatory diagrams showing another embodiment of the nozzle, and FIG.
Fig. 9 is an explanatory view for controlling by incorporating into a sprinkler, Figs. 9 to 11 are explanatory diagrams for controlling by incorporating into a speed sprayer, and Figs. 12 to 14 are controlling by incorporating into a boom sprayer. FIG. 15 is an explanatory view of the injection state in the case of controlling with a conventional direct-type nozzle. (1) Liquid supply member (2) Nozzle body (3) Injection path

Continuation of the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B05B 3/00-3/18 A01M 7/00 B05B 17/00

Claims (1)

(57) [Claims] A nozzle body rotatably supported by a liquid supply member having a liquid supply passage communicating with a pressurized liquid source, and an outer cylinder surrounding the nozzle body; In a controlling nozzle device, a base end portion of which is provided with an injection path which communicates with the liquid supply path and injects a control liquid such that a front end portion thereof is inclined with respect to a rotation center of the nozzle body in a rotation direction. The control nozzle device, characterized in that the jacket tube is capable of advancing / retreating in the length direction of the rotation center line of the nozzle body.