JPH0513560U - Flexible opening / closing nozzle - Google Patents

Abstract

(57) [Summary] [Purpose] The spray angle of the nozzle tip nozzle can be changed freely not only vertically but also horizontally. Further, regarding the nozzle for which the discharge is desired to be stopped, it can be stopped simply by pinching the tip end nozzle portion and rotating with respect to the discharge center axis. [Structure] An opening is formed in a cylindrical valve chamber 2 so that it can be connected to a liquid supply pipe 1. A cutout window portion 25 is formed on the outer wall of the valve chamber 2.
A ball valve 26 is arranged in the valve chamber so that a part of the spherical surface faces the window 25. The ball valve 26 is liquid-tightly and rotatably held in close contact with an annular seal member 27, and the ball valve 26 is disposed so as to receive a pressing force from the cap member 23 from the opposite side. The nozzle mounting portion 29 is formed at the tip of the thin neck portion 28 protruding to the outside of the window 25 to form a nozzle movable portion. A liquid flow path 30 is formed by penetrating the inside of the ball valve 26, the narrow neck portion 28, and the injection port attachment portion 29.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a nozzle for discharging a liquid such as a chemical liquid at an arbitrary angle, for example, a nozzle suitable as a tip discharge mechanism of a spraying device used for spraying a chemical liquid for preventing pests and diseases in greenhouse horticulture such as fruit trees and vegetables.

[0002]

[Prior Art]

 Conventionally, a large number of nozzles were lined up in a branch pipe for supplying chemicals and the like, and were vertically installed in a plurality of furrow passages so that plants on the furrow could be sprayed from both sides at the same time and reciprocated in a field. In a spraying mechanism, there is a spraying mechanism in which a tip nozzle portion is provided so as to be able to swing vertically in order to adjust the spray angle from the nozzle. For individual nozzles that do not require spraying, only the injection port was removed and a cap was installed to stop spraying. As a result, by vertically adjusting the nozzles that are vertically fixed adjacent to each other in the supply pipe at predetermined intervals, the chemical liquid can be simultaneously applied to the front and back of the leaf of the plant on the ridge at the same time. I was able to spray. In addition, the nozzles where spraying was not required were individually replaced by capping caps.

[0003]

[Problems to be solved by the device]

 However, with the nozzle having such a structure, the spraying direction can be changed only up and down, so that the chemical solution can be spray-supplied on both the front and back sides of the leaves on the left and right passages of the ridge. The leaves inside the ridges, that is, the leaves adjacent to the planted plants, are often not sufficiently sprayed because they are shaded by the passage-side leaves. In addition, the spraying power collides with the spray from the nozzle of the supply pipe that is vertically installed so as to sandwich the ridge, and the spraying power is disturbed, so that the spraying force on the central part of the ridge is weakened. Further, the caps for stopping the spraying must be individually replaced and replaced with the screw nozzles for nozzles, which causes the efficiency of the spraying work to be reduced.

The present invention has been made in order to solve such a problem, and the spraying direction of the nozzle tip end nozzle can be freely changed not only vertically but also to the left and right, and the tip nozzle end part can be changed by fingers. It is an object of the present invention to provide a nozzle that can be sprayed as needed to a plant in front of or in the back of the direction of movement of a chemical solution supply pipe by a simple operation of pressing right and left. For nozzles whose discharge is to be stopped, the nozzle can be stopped simply by pinching the nozzle at the tip of the nozzle and rotating it with respect to the discharge center axis. No nozzle replacement work with other cap members is required. To provide.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the universal opening / closing nozzle according to the present invention has an opening formed at one end of the tubular valve chamber so that it can be connected to the liquid supply pipe, and the other end can be attached and detached with a cap member in a liquid-tight manner. A nozzle base formed in a large opening and having a window formed by cutting the outer wall of the valve chamber with a predetermined width around the cylinder axis to a predetermined length, and the center of the sphere on the cylinder axis center line of the valve chamber. In addition, they are arranged in the valve chamber so that a part of the spherical surface faces the window, and an annular seal member is interposed at least between the valve chamber end wall on the liquid supply pipe side and liquid tightness. The ball valve is placed so as to be pivotally in close contact with the valve chamber and receives the pressing force of the cap member from the opposite side of the valve chamber, and the narrow neck portion protruding from the spherical surface facing the window to the outside of the window. A nozzle movable part having a nozzle mounting part formed at the tip, and the ball valve Liquid passage having an inlet opening on a spherical surface surrounded by a ring-shaped sealing member, penetrating the inside of the ball valve, the narrow neck portion, and the nozzle mounting portion, and forming an outlet at the tip of the nozzle mounting portion. The nozzle is mounted on the nozzle so that it can be stopped at any discharge angle by swinging the nozzle mounting part up and down, left and right, and by rotating the nozzle mounting part around the narrow neck part, the liquid inlet part of the ball valve can be moved. The feature is that the flow path is provided so that it can be blocked.

[0006]

【Example】

 Hereinafter, the universal opening / closing nozzle according to the present invention will be described in more detail with reference to the embodiments shown in the drawings. In the figure, reference numeral 1 denotes a liquid supply pipe to which a freely opening / closing nozzle according to the present invention is attached, for example, a plant provided on a ridge in a greenhouse is provided so as to simultaneously spray from both sides and reciprocate in a field. This is a supply branch pipe for spraying chemicals, and it is hung vertically in a plurality of furrow passages with a number of nozzles brazed, glued and screwed in series.

Reference numeral 2 denotes a cylindrical nozzle base portion. An opening portion 22 that can be connected to the liquid supply pipe 1 is formed at one end portion of a cylindrical valve chamber 21, and a cap member 23 is liquid-tight at the other end portion. It has a removable opening. Reference numeral 24 denotes a screw portion into which the cap member 23 is screwed. Reference numeral 25 is a window portion formed by notching the outer wall of the valve chamber 21 around the cylinder axis to have a predetermined width and length.

Reference numeral 26 is a ball valve disposed and housed in the valve chamber 21. The center of the sphere is made to substantially coincide with the center line of the cylinder axis of the valve chamber 21, and a part of the spherical surface faces the window 25. It is fixed so that only rotation is allowed in the position. Further, for example, an O-ring 27 is interposed as an annular sealing member between at least the ball valve 26 and the valve chamber end wall on the liquid supply pipe 1 side, and the opening 11 of the liquid supply pipe 1 and the ball valve 26 are connected to each other. The ball valve 26 is faced in a liquid-tight manner and is rotatably supported by the end wall of the valve chamber 21 opposite to the ball valve 26 which receives the pressing force of the cap member 23. Thus, the ball valve 26 is normally held at a predetermined position by the pressing support force, but is set so as to be rotated by receiving a turning force from the outside. 271 is an O-ring interposed between the ball valve 26 and the cap member 23 for stable holding, and is provided as necessary.

Reference numeral 28 denotes a thin neck portion projectingly fixed to the outside of the window from the spherical surface of the ball valve 26 facing the window portion 25, and a nozzle attachment portion 29 is fixedly connected to the tip thereof. The shape of the nozzle mounting portion may be formed to have a size suitable for turning the knob with fingers, and the notched flat surface portion 291 and the anti-skid knurl portion may be formed on the outer periphery as marks of the turning angle. The nozzle movable portion is composed of the ball valve 26, the thin neck portion 28, and the nozzle mounting portion 29.

Reference numeral 30 denotes a liquid flow path formed inside the movable portion of the nozzle, and the inlet 301 is opened on the spherical surface surrounded by the O-ring 27 of the ball valve 26. An outlet 302 is opened at the tip of the nozzle mounting portion 29, penetrating substantially the center of the nozzle mounting portion 29.

Reference numeral 31 denotes an injection port member, which has an injection port 311 approximately at the center of the tip wall and a screw portion provided inside the existing portion so as to be screwed into a screw portion 292 of the injection port attachment member 29. ing.

Here, the vertical length of the window portion 25 is appropriately set according to the required range of vertical swinging of the nozzle attachment portion 29. On the other hand, as for the width of the window portion 25, when the nozzle opening mounting portion 29 is swung left and right, the narrow neck portion 28 comes into contact with the inner wall of the window portion 25 and stops, or the nozzle opening mounting portion 29 causes the outer circumference of the nozzle base 2. It is set to a range in which the inlet portion 301 of the liquid flow path 30 can always be kept open inside the O-ring 27 until it comes into contact with the wall and stops.

Therefore, when the ball valve 26 is rotated in the left-right direction of the arrow h in FIG. 1 or the up-down direction of the arrow v, the inlet portion 301 is always inward of the O-ring 27 as shown in FIG. Since it is located at, the flow path is not blocked, and the communication state between the liquid supply pipe 1 and the liquid flow path 30 is maintained. On the other hand, the ball valve 26 is rotated clockwise or counterclockwise with respect to the discharge center line p in the direction of arrow c in FIG. 1 so that the inlet 301 is closed by the O-ring 27 or the O-ring 27. When the liquid supply pipe 1 and the liquid flow path 30 are moved to the outside of the position, the communication between the liquid supply pipe 1 and the liquid flow path 30 is blocked. That is, the nozzle mount portion 29 can be discharged while swinging vertically and horizontally while maintaining communication with the liquid supply pipe 1 and holding an arbitrary angle, while the nozzle hole mount portion 29 is centered around the narrow neck, that is, in the discharge direction center. By rotating around the line p, the ball valve 26 can be rotated to block the flow path. Similarly, by rotating the nozzle attachment portion 29 around the narrow neck portion in the same direction or the opposite direction with fingers, the flow path can be easily returned to the communicating state.

[0014]

[Effect of the device]

 According to the nozzle of the present invention having the above-described structure, the spraying direction can be adjusted not only in the vertical direction but also in the horizontal direction or in a diagonal direction by a combination of both directions so that the discharge direction can be adjusted by freely changing the angle. While spraying from the aisle side, it is possible to spray the chemical solution evenly on all leaves of the plant on the ridge, and it is also possible to wash and spray the leaves only at predetermined positions. Further, since it is possible to avoid the collision of the spray from the nozzles which are arranged opposite to each other with the ridge in between, it is possible to prevent the interference effect of the spraying power.

In addition, even when it is desired to stop spraying for each individual nozzle, the flow path can be quickly shut off by only a slight turning operation, so that it is not necessary to replace the other parts, and the work efficiency is significantly improved. It will improve.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a freely opening / closing nozzle according to the present invention.

FIG. 2 is a sectional view taken along the line AA in FIG.

3 is a sectional view taken along line BB in FIG.

[Explanation of symbols]

 1 Liquid Supply Pipe 2 Nozzle Base 21 Valve Chamber 25 Window 26 Ball Valve 28 Neck Neck 29 Injection Port Attachment 30 Liquid Flow Path

Claims (1)

[Scope of utility model registration request] 1. A cylindrical valve chamber is formed with an opening at one end thereof so that it can be connected to a liquid supply pipe, and at the other end a cap member is formed in a liquidtightly removable opening, and an outer wall of the valve chamber is formed. The nozzle base having a predetermined width and a predetermined length cut around the cylinder axis to form a window is aligned with the center of the sphere substantially at the cylinder axis center line of the valve chamber, and a part of the spherical surface is formed on the window. It is disposed in the valve chamber so as to face it, and at least liquid-tightly rotatably comes in close contact with an annular seal member at least between the valve chamber end wall on the liquid supply pipe side and the opposite side of the valve chamber. Nozzle movable part having a ball valve disposed so as to receive a pressing force from the cap member, and an injection port mounting part formed at the tip of a thin neck part protruding outward from the spherical surface facing the window part. And an inlet opening on a spherical surface surrounded by the annular seal member of the ball valve, Liquid valve, a narrow neck, and a liquid flow path that penetrates the inside of the nozzle mounting part and has an outlet opening formed at the tip of the nozzle mounting part. A free opening / closing nozzle that is provided so that it can be stopped at an arbitrary discharge angle, and that the liquid inlet portion of the ball valve can be moved to block the flow path by rotating the nozzle mounting portion around the narrow neck portion.