JP2013153671A - Sprayer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sprayer capable of easily adjusting the spray angle as well as smoothly rotating a nozzle while keeping watertightness.SOLUTION: In a sprayer in which a nozzle member 20 comprising a pipe part 24 fitted to a water supply pipe 10 and a nozzle unit 22 having a jet nozzle 21 at the tip is rotatably attached through joint members 30, 31 fixed to the water supply pipe, the pipe part is fitted to the water supply pipe with play and assembled to the joint members 30, 31 through curved surfaces of O-rings 40, 41. As the nozzle member is assembled to the joint members through the O-rings, the rotation of the nozzle member can be brought to be smooth without damaging the watertightness to the water supply pipe.

Description

  The present invention relates to a spraying device that can rotate a nozzle member relative to a water supply pipe, and more particularly, to a spraying device that can smoothly rotate a nozzle member while maintaining watertightness with the water supply pipe.

2. Description of the Related Art There is a lily of the valley type in which a plurality of nozzles are provided on a long pipe as a spraying device for supplying a chemical solution or the like to a farm product in a mist form. Such a spraying device is configured by attaching a nozzle member to a portion of each communication hole in a water supply pipe provided with a plurality of communication holes in the longitudinal direction, introducing a chemical solution from a tank into the water supply pipe, It is made to discharge | release simultaneously from the ejection hole of each nozzle member.
A lily of the valley type spraying apparatus can spray a chemical solution over a wide range with a small amount of movement by keeping the water supply pipe horizontal and performing the spraying operation while moving along the farm.

In such a spraying device, a joint is fixed around the water supply pipe, and a cylindrical portion communicating with the communication hole is provided in the orthogonal direction, and an elbow type nozzle member is rotatably attached to the cylindrical portion. It has been proposed (Patent Document 1).
The nozzle member is configured by providing a valve hole in the vicinity of the opening at the tip of the sleeve that is inserted into the cylinder, and rotatably mounting an elbow type nozzle so as to cover the valve hole. The chemical solution is released by being positioned so as to communicate with the valve hole, and the chemical solution is prevented from being released by rotating to a position not communicating with the valve hole.
In the spraying device of Patent Document 1, since the chemical liquid can be prevented from being sprayed from an unnecessary nozzle member, it is possible to prevent an excessive amount of the chemical liquid from being sprayed.
In addition, there is also proposed a nozzle member that can be rotated by an angle within a certain range so that the injection direction can be finely adjusted (Patent Document 2).

Japanese Utility Model Publication No. 6-32813 JP 2009-56353 A

However, the height of the plant differs depending on the type and growth state, and there are various modes to be sprayed depending on the plant, such as those for supplying a chemical solution to the leaf surface, those for supplying a chemical solution to the back side or stem of the leaf, etc. Therefore, it is not possible to cope with the spray angle only by fine adjustment.
In particular, in fields where different crops are planted for each row, the water supply pipes must be set at a height corresponding to the crop and spray work must be performed for each row. Was getting longer. As a result, the amount of work has increased and the amount of chemicals used tends to be excessive.
In order to shorten the moving distance, when the chemical solution is continuously supplied from a certain height at the same spray angle, the chemical solution cannot be supplied according to the type of crop or the growing state.

In the spray device in which the nozzle member and the water supply pipe are rotatably connected so that the injection angle can be changed significantly, the chemical solution is likely to leak from the connecting portion, and both members are kept in order to maintain water tightness. In order to make them closely contact each other, a highly accurate design is required. Moreover, when it consists of a metal material, rust etc. arise and the smooth rotation of a nozzle member may be impaired.
Therefore, an object of the present invention is to provide a spraying device that can easily adjust the injection angle and can smoothly rotate the nozzle member while maintaining watertightness, and can be easily maintained.

  In order to solve the above-described problems, a spray device according to the present invention includes a pipe portion that is provided around a water supply pipe for supplying the introduced liquid through the communication hole, and a pipe portion that is provided in the water supply pipe. A nozzle device comprising a nozzle part having a nozzle hole at the tip, and a rotation member attached to a portion of the communication hole via a joint member fixed to the water supply pipe, The pipe portion is attached to the water supply pipe with play, and is assembled rotatably through the curved surface of the O-ring to the joint member while maintaining watertightness. It is.

In this case, a groove portion may be provided along the inner periphery of the pipe portion, and the liquid from the communication hole may be introduced through the groove portion.
Furthermore, the said communicating hole may be opened by several along the longitudinal direction of the said water supply pipe | tube, and the spray apparatus with which the said nozzle member was assembled | attached to each of this communicating hole may be sufficient.

The spray device according to claim 1 is configured such that the pipe portion of the nozzle member is attached to the water supply pipe in a state where play is provided, and the watertightness is secured to the joint member fixed to the water supply pipe via the curved surface of the O-ring. The nozzle member can be rotated smoothly without impairing water tightness with respect to the water supply pipe.
Since the nozzle member and the joint member are assembled via the O-ring, rotation problems due to the occurrence of rust and the like are unlikely to occur. Further, since the watertightness and smooth rotation are ensured by exchanging the O-ring, maintenance is easy.
By rotating the nozzle member with respect to the horizontally arranged water supply pipe, it becomes possible to spray from the bottom to the top, so when used as a spraying device for spraying agricultural chemicals, leaves It is possible to effectively supply chemicals to areas where pests are prone to spring, such as the back of the body.

The spray device according to claim 2 is provided with a groove portion along the inner periphery of the pipe portion, and the liquid is introduced from the communication hole of the water supply pipe through the groove portion, so that a gap between the pipe portion and the water supply pipe is provided. Can be reduced as much as possible. For this reason, the play gap between the pipe portion can be reduced to such an extent that it is slidably contacted with the water supply pipe. Thereby, the watertightness between the nozzle member and the water supply pipe can be further ensured.

  The spray device according to claim 3 has a plurality of communication holes along the longitudinal direction of the water supply pipe, and a nozzle member is assembled to each of the communication holes to form a lily of the valley type multi-head spray device. This makes it possible to vary the injection angle for each nozzle. If this spraying device is used for spraying pesticides in Hatada where different crops are planted for each row, multiple rows can be moved by one movement by setting each nozzle member to an injection angle corresponding to the crop. It becomes possible to perform spraying work collectively.

It is a perspective view which shows the spraying apparatus which concerns on this embodiment. It is a perspective view which shows the state which decomposed | disassembled the said spraying apparatus. It is a front view of the nozzle member. It is a side view of the said nozzle member. It is the fragmentary perspective view of the said spraying apparatus, (a) shows the state which has located all the nozzle members in the site | part of the communicating hole of a water supply pipe, (b) rotates a nozzle member and changes an injection angle Shows the state. It is explanatory drawing which shows the state by which a nozzle member is assembled | attached to a water supply pipe via a joint member, (a) shows the cross-sectional state seen from the front, (b) is the AA arrow cross section in (a). FIG. It is explanatory drawing which shows the 1st modification of the said spraying apparatus. It is a perspective view which shows the 2nd modification of the said spraying apparatus.

A preferred embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a perspective view showing a spray device 1 according to an embodiment of the present invention.
This spraying device 1 is a spraying device for spraying a chemical solution or the like in the form of a mist and supplying it to agricultural products. A plurality of nozzle members 20 are provided along a length direction of the long water supply pipe 10. It is a lily of the valley sprayer attached at predetermined intervals. By rotating the nozzle member 20 with respect to the water supply pipe 10, the chemical liquid can be ejected from the ejection hole 21 formed at the tip of the nozzle member 20 in a desired direction.

The water supply pipe 10 is a metal pipe, and as shown in FIG. 2, a plurality of communication holes 11 are arranged side by side on a line along the longitudinal direction. A tank containing a chemical solution is connected to the upstream end of the water supply pipe 10 via a hose 2, and the downstream end is sealed with a cap nut 3.
The nozzle member 20 is attached to each communication hole 11a, 11b ... via the joint members 30 and 31. At this time, with the nozzle member 20 assembled inside the joint members 30, 31, the joint member 30, 31 is fixed to the water supply pipe 10, so that the nozzle member 20 is mounted around the outside of the water supply pipe 10. Can be assembled in a state.

As shown in FIGS. 3 and 4, the nozzle member 20 includes a nozzle portion 22 and a pipe portion 24.
As shown in FIG. 5, the pipe portion 24 is a portion that is attached to the water supply pipe 10, and is rotatably assembled to the joint members 30 and 31 at both ends.
The pipe portion 24 is a cylindrical body made of a metal material such as brass, and is wrapped around the water supply pipe 10 with a slight play. Then, O-rings 40 and 41 having a circular cross section are attached to concave mounting portions provided at both ends.
The nozzle member 20 is assembled to the water supply pipe 10 by bringing the inner peripheral surfaces of the joint members 30 and 31 into close contact with the outer peripheral surfaces of the O-rings 40 and 41.

The O-rings 40 and 41 are made of an elastic member made of rubber or synthetic resin, and have a circular cross-sectional shape as shown in FIG. Since the pipe portion 24 of the nozzle member 20 and the joint members 40 and 41 fixed to the water supply pipe 10 are assembled via such O-rings 40 and 41, the watertightness with respect to the water supply pipe 10 is not impaired. The nozzle member 20 can be smoothly rotated.
That is, between the pipe portion 24 and the joint members 30 and 31, the water tightness can be maintained by the elastic force of the O-rings 40 and 41, while the joint member 30 is formed by the curved surface on the outer periphery of the O-rings 40 and 41. , 31 can be reduced as much as possible, and smooth rotation of the nozzle member 20 is ensured.

In the center of the pipe portion 24, a connection hole 25 to the nozzle portion 22 is provided. A communication groove 26 is formed in the inner wall of the pipe portion 24 along the inner periphery so as to be continuous with the connection hole 25.
The communication groove 26 is a pipe that extends from the communication hole 11 when the connection hole 25 that has been located at the site of the communication hole 11 of the water supply pipe 10 comes away when the nozzle member 20 is rotated. This is a passage for ensuring the introduction of the chemical into the connection hole 25 of the portion 24. By providing such a communication groove 26, the gap between the water supply pipe 10 and the nozzle member 20 can be reduced as much as possible.

The nozzle part 22 extending in a T-shape in the vertical direction from the center of the pipe part 24 is a part for ejecting the chemical solution introduced from the connection hole 25 with the pipe part 24 in the form of a mist. A large number of small holes or a mechanism for spraying in an aerosol form are provided.
A method of using the spraying device having the above configuration will be described.

When used for spraying chemicals in a field where the same crop is cultivated over a wide area, all nozzles 22 are directed in a direction so that the chemicals are supplied to the optimal part of the crop. And after setting the water supply pipe | tube 10 to predetermined | prescribed height, a chemical | medical solution is injected, moving, maintaining horizontality.
When supplying a chemical solution to a site where pests are likely to spring, such as the back of a leaf, the nozzle member 20 is rotated with respect to the water supply pipe 10 so that the ejection hole 21 faces upward. By setting the water supply pipe 10 to a low height and injecting the chemical liquid from the bottom to the top, the chemical liquid can be effectively supplied to a necessary site.

In addition, when using for spraying pesticides in Hatada where different crops are cultivated for each row, each nozzle member is set to an injection angle corresponding to the crop in the corresponding row, so that multiple It is possible to perform spraying work in groups.
When water or the like is sprayed over a wide range, if the water supply pipe 10 is installed vertically with the respective nozzle portions facing in different directions, the water can be scattered in all directions. If spraying while rotating the water supply pipe 10, it can also function as a sprinkler.

When the nozzle member 20 is rotated with respect to the water supply pipe 10, the pipe portion 24 of the nozzle member 20 is attached to the water supply pipe 10 with play, and the joint member 30 integrated with the water supply pipe 10. , 31 and the O-rings 40, 41 at both ends of the pipe portion 24 are in contact with each other through the curved surfaces, so that they can be rotated smoothly.
Since the nozzle member 20 is assembled to the joint members 30 and 31 integrated with the water supply pipe 10 via the O-rings 40 and 41, the watertightness at the time of rotation is ensured.

Further, since the communication groove 26 is formed along the inner periphery of the pipe portion 24 of the nozzle member 20, even if the connection hole 25 to the nozzle portion 22 is located on the back side of the communication hole 11. The chemical solution can be smoothly introduced from the water supply pipe 10. For this reason, in order to make watertight more reliable, the clearance gap between the pipe part 24 and the water supply pipe 10 can be made small as much as possible.
Since the O-rings 40 and 41 are made of a material made of rubber or synthetic resin, rust does not occur and the surface smoothness is maintained. Therefore, it is difficult for rotation of the nozzle member 20 to occur. For example, even if the rotation of the O-rings 40 and 41 is defective, if it is replaced, watertightness and smooth rotation can be maintained for a long time. Can be made.

In the present embodiment, the communication groove 26 is provided on the inner periphery of the pipe portion 24 of the nozzle member 20, but a structure without the communication groove 26 as shown in FIG. In this case, it is possible to secure a flow path from the communication hole 11 of the water supply pipe 10 to the connection hole 25 of the nozzle part 22 by sufficiently taking the gap between the pipe part 24 and the water supply pipe 10.
Further, the O-rings 40 ′ and 41 ′ are not necessarily circular in cross section as long as the outside is a curved surface, and may be semicircular in cross section.

  Furthermore, the water supply pipe of the present invention is not necessarily provided with a plurality of communication holes along the longitudinal direction. For example, a spray pipe 1 ′ shown in FIG. The opening end portion may be a communication hole 11 ′, and the nozzle member 20 may be attached thereto via a joint member 30 and an O-ring.In this case, the opening end portion of the pipe portion 24 on the side not attached to the joint member 30 is And sealed with a cap nut or the like.

  The present invention can be applied not only to agricultural spraying apparatuses but also to spraying apparatuses used in all industrial fields.

DESCRIPTION OF SYMBOLS 1 ... Spraying device 2 ... Hose 3 ... Cap nut 10 ... Water supply pipe 11 ... Communication hole 20 ... Nozzle member 21 ... Ejection hole 22 ... Nozzle part 24 ...・ Pipe part 25 ... Connection hole 26 ... Communication groove (groove part)
30, 31 ... Joint member 40, 41 ... O-ring 50 ... Clearance

Claims (3)

To the water supply pipe (10) for supplying the introduced liquid through the communication hole (11),
Nozzle member (20) comprising a pipe part (24) mounted around the water supply pipe (11) and a nozzle part (22) communicated from the pipe part (24) and having an ejection hole (21) at the tip. The
A spraying device (1) configured to be rotatably attached to a portion of the communication hole (11) via joint members (30, 31) fixed to the water supply pipe (10),
The pipe portion (24) is attached to the water supply pipe (10) with play, and the joint member (30, 31) is watertight via the curved surface of the O-ring (40, 41). A spraying device characterized by being assembled so as to be rotatable while holding the   A groove (26) is provided along the inner periphery of the pipe portion (24), and the liquid from the communication hole (11) is introduced through the groove (26). Item 4. The spray device according to Item 1.   The communication hole (11) has a plurality of openings along the longitudinal direction of the water supply pipe (10), and the nozzle member (20) is assembled to each of the communication holes (11). The spraying device according to claim 1 or 2.