JPH0448951A - Liquid injector - Google Patents

Abstract

PURPOSE:To inject liquid even in the direction of elevation angle by pivoting an injection nozzle main body via a first horizontal shaft and also fixing a first gear of a supporting axis and providing a second horizontal shaft to a rotor and freely rotatably supporting a second gear which is engaged with the first gear and rotated by revolution around the supporting axis of the rotor on the second horizontal shaft. CONSTITUTION:A second gear 10 is revolved around a first gear 4 according to revolution of a rotor 2. The second gear 10 is rotated around a second horizontal shaft 11 in one direction at an angle equal to dislocation of the engaging pitch of both the first gear 4 and the second gear 10 and rightly engaged with the first gear 4. An injection nozzle main body 9 performs elevation movement in a range of a prescribed angle. Liquid can be injected not only in the horizontal direction but also in the direction of elevation angle from a nozzle 92 of the injection nozzle main body 9 by the elevation movement of this main body 9. Thereby pest control can be performed in a range of the inside from the top face part of farm products. Pest control effect can be enhanced.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is mainly used for installing in fields and orchards to control agricultural crops, or for cleaning inside storage tanks that store fluids such as petroleum. The present invention relates to a liquid ejecting device for performing.

(Prior Art) Conventionally, liquid injection devices installed in fields, orchards, etc. to perform pest control have been described in Japanese Utility Model Publication No. 53-6084, for example, by introducing high-pressure liquid from a pump. A rotary body having an eccentric shaft and an injection nozzle body that injects liquid in a horizontal direction perpendicular to the axis of the support shaft is rotatably supported on a support shaft having a liquid path, and the eccentric shaft includes: A turning nozzle for turning the rotating body in a horizontal and lateral direction around the support shaft is rotatably provided, a reduction gear mechanism is provided between the turning nozzle and the support shaft, and the injection is performed from the turning nozzle. The rotating body is caused to revolve through the reduction gear mechanism by the reaction force generated by the liquid injection, and the high-pressure liquid introduced into the liquid guide path of the support shaft is sprayed horizontally from the nozzle of the injection nozzle main body. There is.

(Problem to be Solved by the Invention) However, in a conventional liquid injection device, the injection nozzle main body is fixed to the rotating body, and the high pressure liquid is injected only in the horizontal direction from the nozzle of the injection nozzle main body. Therefore, when installing in fields or orchards, it is usually placed higher than agricultural crops such as fruit trees, and the liquid is sprayed horizontally above the crops, and the scattered mist falls and adheres to the crops. That's what I was doing. Therefore, when controlling crops that are tall and have thick branches and leaves, the problem is that only the upper surface of the crop can be controlled, and it is not possible to control the inside of the crop, resulting in a small control effect. there were.

The present invention was invented in view of the above points, and the purpose is to move the injection nozzle body in elevation while rotating the injection nozzle body together with the rotating body, and to spread the liquid not only in the horizontal direction but also in the horizontal direction.
The point is that it can also be ejected in the elevation direction.

(Means for Solving the Problems) Accordingly, the present invention provides a support shaft (1a) having a liquid guiding path (1a).
1), a rotating nozzle that rotatably supports a rotating body (2) having an injection nozzle body (9), and causes the rotating body (2) to revolve laterally around the support shaft (1); (3
), the jet nozzle main body (9) is connected to the rotating body (2) via a first horizontal shaft (8) substantially orthogonal to the axis of the support shaft (1). A first gear (4) having teeth is fixed to the support shaft (1), and the first gear (4) is fixed to the support shaft (1) for elevational movement.
A second horizontal shaft (11) extending in the same direction as the horizontal shaft (8) is provided, and the second horizontal shaft (11) meshes with the first gear (4) and supports the rotating body (2). A second gear (10) that rotates around the axis (1) is rotatably supported, and the injection nozzle body (9) is provided between the second gear (10) and the injection nozzle body (9). Transmission mechanism (20) that moves the
It has been established.

The transmission mechanism (20) also includes a transmission protrusion (21) that is offset with respect to the rotation center of the second gear (10), and a transmission protrusion (21) that is offset from the rotation center of the second gear (10).
) and a passive surface (23) that engages with the passive surface (23).
3) is that on the side where the injection direction from the injection nozzle body (9) is close to horizontal, the elevation angle movement speed with respect to the rotational speed of the second gear (10) is slow, and the injection direction from the injection nozzle body (9) is low. It is preferable that the curved surface is such that the elevation angle movement speed relative to the rotational speed becomes faster on the side moving away from the horizontal.

(Function) A part of the high-pressure liquid introduced into the liquid guide path (1a) of the support shaft (1) is injected through the swirling nozzle (3), and the rotating body (2) moves toward the support shaft (1). ), the injection nozzle body (
9) also revolves. As the rotating body (2) revolves, the second gear (10) rotates while revolving around the first gear (4), and the rotation of the second gear (10) causes the transmission mechanism (20 ) through the injection nozzle body (9
), and the injection nozzle body (9) performs an elevational movement, and the nozzles of this injection nozzle body (9) can inject liquid not only in the horizontal direction but also in the elevational direction. be.

Further, a transmission protrusion (21) that deviates the transmission mechanism (20) with respect to the rotation center of the second gear (10), and the transmission protrusion (21)
) and a passive surface (23) that engages with the rotational speed of the second gear (10) on the side where the injection direction from the injection nozzle body (9) is close to horizontal. The elevation angle movement speed relative to the injection nozzle body (
By forming a curved surface in which the elevation angle movement speed relative to the rotational speed becomes faster on the side where the injection direction from the injection nozzle body (9) moves away from the horizontal, the injection direction from the injection nozzle body (9) becomes horizontal, and the injection distance becomes longer. Even if the circumferential velocity of the injected liquid in a part far away from the center of revolution becomes far, the residence time of the injected liquid in the part where the injection direction is close to horizontal can be increased, and furthermore, the residence time of the injected liquid can be increased in the part where the injection direction is far from horizontal. Since the residence time of the liquid can be shortened, the injection amount per unit area within the injection range can be equalized.

(Example) In Figures 1 to 4, (1) is a support shaft that has a liquid guide path (1a) for introducing high-pressure liquid from a pump, and the support shaft (1) has a middle part and a tip part. is provided with lateral holes (lb) (lc) that penetrate laterally from the liquid guide path (1a). A rotary body (2) having a communication path (2a) communicating with the horizontal hole (1b) is rotatably supported around the horizontal hole (1b) of the support shaft (1), and Said horizontal hole (
1c) A rotating nozzle (3) having an injection port communicating with the horizontal hole (1c) and causing the rotating body (2) to revolve laterally around the support shaft (1); At the same time, a first gear (4) made of a worm is fixed to the outer periphery of the lower end of the support shaft (1).

Further, an eccentric shaft (5) parallel to the support shaft (1) is provided on the rotating body (2) at a position offset from the center of rotation, and a tip of the eccentric shaft (5) is provided. , the turning nozzle (3
) is rotated by the jet force of the liquid jetted from the impeller (6
) is rotatably supported, and the impeller (6) and the support shaft (
A reduction gear mechanism (7) is interposed between the rotating body (2) and the rotating body (2).

This reduction gear mechanism (7) includes a small diameter drive gear (71) provided on the impeller (6), a large diameter fixed gear (72) fixed to the support shaft (1), and these gears (71). (7
2) It is composed of a plurality of small diameter intermediate gears (73) and a plurality of large diameter intermediate gears (74) disposed between and supported by the eccentric shaft (5) and the support shaft (1), and ), the drive gear (71) and each large-diameter intermediate gear (74
) and each small-diameter intermediate gear (73) are rotated so that the rotating body (2) revolves around the fixed gear (72).

On the other hand, at a position offset from the center of rotation of the rotating body (2), there is a passage (8a) communicating with the communication passage (2a), and approximately parallel to the axis of the support shaft (1). orthogonal first
A horizontal axis (8) is provided, and an injection nozzle main body (9) having a liquid supply path (9a) communicating with the communication path (2a) is pivoted on this first horizontal axis (8) so as to be able to move vertically in elevation. an arm piece (2b
), and the arm piece (2b) is provided with a second horizontal axis (11) extending in the same direction as the first horizontal axis (8), and on this second horizontal axis (11), the first horizontal axis A second gear (10) consisting of a worm gear that meshes with the gear (4) is rotatably supported, and as the rotating body (2) revolves, the second gear (10) is rotated by the first gear (4). This second gear (
10) 1st gear (4) and 2nd gear (10) accompanying the revolution of
The second gear (10) rotates in one direction about the second horizontal axis (11), and the second gear (10)
) so that the teeth of the first gear (4) mesh correctly with the teeth of the first gear (4).

The second gear (10) and the injection nozzle body (
9) is provided with a transmission mechanism (20) that transmits the rotation of the second gear (10) to the injection nozzle body (9) and moves the injection nozzle body (9) in elevation. This transmission mechanism (20) includes a transmission projection (
21) is provided protrudingly, and a passive piece (22) that faces the side surface of the second gear (10) is provided protrudingly on the rotation center side boss portion of the injection nozzle main body (9). 22) has an elongated hole-shaped passive surface (2) that engages with the transmission protrusion (21).
3), a second horizontal shaft (11) of the second gear (10) is provided;
By rotating around the center, the engagement position of the transmission projection (21) and the passive surface (23) is changed, and the injection nozzle body (
9) is moved in elevation. In addition, as shown in FIG. 7, the passive surface (23) of the transmission mechanism (20) runs in the same direction as the traveling direction of the transmission protrusion (21) on the side where the injection direction from the injection nozzle body (9) is close to horizontal. Extending to the second gear (
10) The elevation angle movement speed with respect to the rotational speed is slow (the advancing angle of the transmission protrusion is in the range of 90' to 2700), and
On the side where the injection direction from the injection nozzle body (9) moves away from the horizontal, it extends in a direction perpendicular to the traveling direction of the transmission protrusion (21), so that the elevation angle movement speed with respect to the rotational speed of the second gear (10) becomes faster ( It is preferable to curve the transmission protrusion into a substantially dogleg shape so that the advancing angle of the transmission protrusion is in a range from a position exceeding 270' to 90'.

Further, the injection nozzle main body (9) has a spherical universal joint (91
) and a nozzle (92).

This nozzle (92) is connected to the universal joint (91).
a holder (92a) rotatable relative to the holder (92a);
and a nozzle chip 7'' (92b) to be held in the holder (92a).
a) inclined radially outward with respect to the center of rotation;
When high-pressure liquid is injected from the nozzle tip (92b) with the distal end side inclined in the rotational direction of the holder (92a) with respect to the base end side, the reaction force due to the injection is generated in the direction of inclination of the nozzle tip (92b). Acting in the opposite direction, the holder (92a) rotates at high speed relative to the universal joint (91), and this high speed rotation causes the injected liquid to draw a spiral trajectory.

In Figs. 1 to 4, (12) is a bridge installed between the tip of the support shaft (1) and the tip of the eccentric shaft (5), and It rotates freely.

The liquid injection device f (A) configured as described above is used mainly for liquid feeding pipes (
B) Attach the support shaft (1) to the upper end of the crop,
Liquids such as pesticides are sprayed from above the fruit trees. Therefore, a part of the high-pressure liquid introduced from the liquid sending pipe (B) to the liquid guiding path (la) is transferred from the swirling nozzle (3) to the impeller (
6), and most of the high-pressure liquid is injected horizontally from the nozzle (92) of the injection nozzle body (9). Then, the impeller (
6) rotates, via the reduction gear 84 (7),
The rotating body (2) revolves around the support shaft (1), and the injection nozzle body (9) provided on the rotating body (2) also revolves to spray liquid such as a chemical solution in a circumferential manner. be. As the rotating body (2) revolves, the second gear (10) consisting of the worm gear changes to the first gear (10) consisting of the worm.
4), and as the second gear (10) revolves, the second gear (10) rotates at an angle equivalent to the meshing pitch difference between the first gear (4) and the second gear (10) It rotates in one direction about the shaft (11) and meshes correctly with the first gear (4). As a result, the rotation of the second gear (10) changes the engagement position between the transmission protrusion (21) provided on the second gear (10) and the passive surface (23) provided on the injection nozzle body (9). The injection nozzle body (9) sequentially performs an elevational movement within a predetermined angular range. Therefore, due to the elevation movement of the injection nozzle body (9), liquid can be ejected from the nozzle (92) of the injection nozzle body (9) not only in the horizontal direction but also in the elevation direction. Therefore, even when controlling crops that are tall and have thick branches and leaves, it is possible to control the crops from the upper surface to the inside, thereby increasing the control effect.

In addition, when the spray nozzle body (9) is made to revolve as described above and the liquid is sprayed in a circumferential manner, as the spray direction becomes closer to the horizontal, the spray distance becomes longer, and the spray distance becomes longer in the part far away from the center of revolution. Since the circumferential velocity of the injection liquid increases, the injection amount per unit area within the injection range decreases as the injection distance increases. As shown in the figure, on the side where the injection direction from the injection nozzle body (9) is close to horizontal, the elevation angle movement speed relative to the rotational speed of the second gear (10) is slow, and the injection direction from the injection nozzle body (9) is horizontal. By curving it in a substantially dogleg shape in which the elevation angle movement speed with respect to the rotational speed of the second gear (10) becomes faster on the side moving away from the second gear (10), the residence time of the injection liquid in the part where the injection direction becomes close to horizontal can be lengthened. Since the residence time of the injection liquid in the portion where the injection direction is away from the horizontal can be shortened, the injection amount per unit area within the injection range can be equalized.

Moreover, by rotating the nozzle (92) of the injection nozzle body (9) at high speed as described above, a sufficient reach distance can be obtained, and the injection liquid draws a spiral trajectory and further entrains the surrounding air. The sprayed liquid moves in the spraying direction while generating an airflow, and the sprayed liquid is divided into many particles due to the air resistance in the spraying direction, and these particles move along with the airflow, so it is difficult to produce crops. Even if sprayed directly towards the crops, the impact force on the crops can be made very small, making it possible to control the pests without damaging branches, leaves, fruits, etc.

In addition, in the above embodiment, as means for rotating the second gear (10) by revolution of the rotating body (2) around the support shaft (1),
The first gear (4) consisting of a worm was fixed to the support shaft (1), and the second gear (10) consisting of a worm gear was rotatably supported on the second horizontal axis (11). Instead, a screw gear or a bevel gear may be used, and the key is a gear that meshes with the first gear (4) and rotates around the support shaft (1) of the rotating body (2). It's good to have it.

In addition, in the embodiment described above, the injection nozzle body (9) was configured to move in elevation in a downward direction from a near horizontal side, but the injection nozzle body (9) could also be moved as shown in FIG. It may be configured to move upward by a predetermined angle in elevation from a near-horizontal side. In this case, a liquid injection device is arranged below the grape trellis in the vineyard, and the injection nozzle main body (9) is moved upward at a predetermined angle from a near-horizontal side to spray pesticides from the underside of the grapes. It injects. Moreover, in the case of FIG. 6, the transmission mechanism (
The passive surface (23) of the jet nozzle (20) is connected to the second gear (23) on the side where the jet direction from the jet nozzle body (9) is close to horizontal as shown in
10) has an approximately dogleg shape in which the elevational movement speed relative to the rotational speed of the second gear (10) becomes slow, and the elevational movement speed relative to the rotational speed of the second gear (10) becomes faster on the side where the injection direction from the injection nozzle main body (9) moves away from the horizontal. By curving the jet liquid, the residence time of the jet liquid can be increased in the portion where the jet direction is close to horizontal, and the residence time of the jet liquid can be shortened in the portion where the jet direction is away from the horizontal. This makes it possible to equalize the injection amount per area.

In addition, in the above embodiment, an injection nozzle body (9) having one nozzle (92) was used, but this injection nozzle body (9) is connected to the first horizontal axis (8) as shown in FIG. The structure may include a plurality of nozzles (93) extending radially from a boss portion supported by the nozzle, and each nozzle (83) may move in elevation. With this configuration, for example, when cleaning the inside of a storage tank that stores fluid such as oil, the entire surface inside the tank can be cleaned by the revolution and elevation movement of the injection nozzle body (9). be.

Further, in the above embodiment, the injection nozzle main body (θ) is configured to move in elevation by a predetermined angle, but in addition, as shown in FIG. 8, the first horizontal axis (8) and the second horizontal axis (11) are arranged on the same axis, so that the injection nozzle main body (9) and the second gear (10) can rotate on the same axis, and the injection nozzle main body (9)
A passive piece (25) having a passive surface (24) consisting of a round hole is protruded from the boss portion of the second gear (25), and the transmission protrusion (21) is engaged with the passive surface (24). 10) may cause the injection nozzle body (9) to continuously rotate in one direction. In this case as well, it is possible to clean the entire surface inside the tank.

In the embodiments shown in FIGS. 6, 7, and 8, the structures other than those described above are the same as those in the embodiments shown in FIGS. 1 to 4, and detailed explanation thereof will be omitted.

Further, in the above embodiment, the rotating nozzle (3) and the impeller (6) were used as means for revolving the rotating body (2), but in addition, as in the conventional example described above, high pressure liquid injection was used. The rotating nozzle is rotatably supported on the eccentric shaft (5), and is connected to the rotating body (
2) may be configured to revolve.

(Effects of the Invention) As described above, according to the present invention, the injection nozzle main body (9) can be made to revolve together with the rotating body (2) to inject liquid in the horizontal direction, and the injection nozzle main body (9) can be , is pivoted to the rotating body (2) through a first horizontal axis (8) substantially orthogonal to the axis of the support shaft (1) so as to be movable in elevation, and the support shaft (1) has teeth. The first gear (4) is fixed, and the rotating body (2) is provided with a second horizontal shaft (11) extending in the same direction as the first horizontal shaft (8). The second gear (10) meshes with the first gear (4) and rotatably supports a second gear (10) which rotates around the support shaft (1) of the rotating body (2). ) and the injection nozzle body (9), the rotation of the second gear (10) is transmitted to the injection nozzle body (9).
) is provided, the second gear (10) rotates while revolving around the first gear (4) as the rotating body (2) revolves. The rotation of the gear (10) is transmitted to the injection nozzle body (9) via the movement mechanism (20),
) performs an elevational movement. Therefore, the revolution and elevation movement of the injection nozzle body (9) makes it possible to inject liquid not only in the lateral direction but also in the elevation direction.
Even when controlling crops that are tall and have thick branches and leaves, it is possible to control the crops from the top to the inside, increasing the control effect, and cleaning the inside of the storage tank. Even if the injection nozzle body (9)
The cleaning range during revolution can be expanded, and cleaning efficiency can be improved. Further, the transmission mechanism (20) has a structure including a transmission protrusion (21) that is offset with respect to the rotation center of the second gear (10), and a passive surface (23) that engages with the transmission protrusion (21). The passive surface (23) is connected to the second gear (1
By forming a curved surface in which the elevational movement speed relative to the rotational speed of 0) is slow, and the elevational movement speed relative to the rotational speed becomes faster on the side where the injection direction from the injection nozzle body (9) moves away from the horizontal, the injection In addition to increasing the residence time of the sprayed liquid in the area where the direction is close to horizontal,
Since the residence time of the sprayed liquid in the portion where the spray direction moves away from the horizontal can be shortened, the spray amount per unit area within the spray range can be equalized, and uneven spraying and cleaning of the chemical solution can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of the liquid injection device of the present invention, Fig. 2 is a cross-sectional plane, Fig. 3 is a front view with the cover integrally omitted, Fig. 4 is a plan view, and Fig. 5 is an illustration of only the transmission mechanism. 6 to 8 are front views showing another embodiment, and FIG. 9 is an explanatory diagram showing an embodiment.
The figure is a schematic diagram showing the state of use. (1)...Support shaft (1a)...Liquid guide path (2)...Rotating body (3)...Swivel nozzle (4)...First gear (8 )...First horizontal shaft (9)...Injection nozzle body (10)...Second gear (11)...Second horizontal shaft (20)...Transmission mechanism ( 21)...Transmission protrusion (23)...Passive surface Figure 1 Figure 2 Figure 5 References Figure 8 to Figure 9

Claims (1)

[Claims] 1) A rotary body (2) having an injection nozzle body (9) is rotatably supported on a support shaft (1) having a liquid guide path (1a), and the rotary body (2) is rotatably supported. 2) is provided with a rotating nozzle (3) that laterally revolves around the support shaft (1), wherein the injection nozzle main body (9) is attached to the rotating body (2). The first gear (4) is pivotally supported for elevational movement via a first horizontal axis (8) that is substantially perpendicular to the axis of the support shaft (1), and a first gear (4) having teeth is attached to the support shaft (1). A second horizontal axis (11) extending in the same direction as the first horizontal axis (8) is provided on the rotating body (2).
11) meshes with the first gear (4) and rotates the rotating body (
2) The second gear (1) rotates around its support shaft (1).
The injection nozzle body (9) is supported between the second gear (10) and the injection nozzle body (9).
) is provided with a transmission mechanism (20) that moves the liquid in elevation. 2) The transmission mechanism (20) includes a transmission projection (21) that is offset with respect to the rotation center of the second gear (10), and a transmission projection (21) that is offset from the rotation center of the second gear (10).
) and a passive surface (23) that engages with the passive surface (23).
3) is that on the side where the injection direction from the injection nozzle body (9) is close to horizontal, the elevation angle movement speed with respect to the rotational speed of the second gear (10) is slow, and the injection direction from the injection nozzle body (9) is low. 2. The liquid ejecting device according to claim 1, wherein the liquid ejecting device has a curved surface such that the elevation angle movement speed relative to the rotational speed becomes faster on the side moving away from the horizontal.