JPH0998706A - Nozzle for powder and granule - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a powder or granule nozzle for a power sprayer spray a granular fertilizer, chemical, etc., in a relatively wide zone. SOLUTION: This powder and granule nozzle is a nozzle 5 to be connected to a feeding port of a power sprayer for applying a granule. A fan 17 is rotatably housed in a box 13 of the nozzle 5. One side of the box 13 is made to communicate with a coupling pipe 13c to be connected to the feeding port. A spraying port 13a is opened to the other side of the box 13. A spray width controlling cover 20 capable of regulating opening width is arranged on the spraying port 13a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a particle spray nozzle for spraying granular fertilizers, chemicals and the like in a wide range by a backpack type power sprayer.

[0002]

2. Description of the Related Art Heretofore, granular fertilizers, chemicals and the like have been sprayed by a backpack type power sprayer.
When spraying granules, the shutter of the sprayer is changed from liquid or powder to granules, and the nozzles connected to the nozzles are also replaced for granules. The injection port for granules is adapted to diffuse and evenly disperse the granules. For example, as shown in FIG. 6, the tip of the injection port 1 is formed in a triangular shape or a fan shape, and guide pieces 1a, 1b, 1c are provided therein so that the discharge direction of the sprayed granules spreads substantially uniformly. In this way, it was possible to spray evenly in a narrow field. FIG.
As shown in Fig. 3, the injection port 2 is formed in the shape of a pipe, and the spray ports 2a, 2a ... Are provided on the lower surface and the tip thereof at a predetermined interval, and the granules collide with the spray ports 2a, 2a. By providing a guide plate whose discharge direction can be bent, the spray nozzle can be sprayed in a wide range by walking in the ridge while spraying in the field direction while keeping the nozzle upright.

[0003]

However, in the former case, in the former case, although the spraying can be performed by diffusion, the spraying range is narrow, so that it is suitable for partially concentrated spraying. However, even in a narrow field, it has a width of several tens of meters, so it is necessary to sway the nozzles to the left and right while walking, and unevenness may occur. In the latter case, the spraying is performed over a wide range, and when used in a narrow field, some spraying ports 2a are closed to adjust the spraying range. In addition, the amount of the granules sprayed from the other spraying ports was unbalanced, and the spraying amount varied depending on the spraying ports, resulting in unevenness.

[0004]

The present invention uses the following means in order to solve such a problem. That is, the spray port 5 is connected to the spray port 12a of the power spraying machine A for spraying the granules, and the fan 17 is rotatably housed in the housing 13 of the spray port 5, and one side of the housing 13 is provided. A connecting pipe 13c connected to the spout 12a is communicated with the spray port 13a opened on the other side of the housing 13, and a spray width adjusting cover 20 for adjusting the opening width is arranged at the spray port 13a. Is.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention shown in the drawings will be described below. FIG. 1 is a perspective view showing a state in which a granule spray nozzle of the present invention is connected to a backpack type power sprayer to spray granules, FIG. 2 is a side sectional view of the granule spray nozzle of the present invention, and FIG. 3 is the same. FIG. 4 is a plan view, FIG. 4 is a side sectional view showing another embodiment of the granulation nozzle, and FIG. 5 is a plan view of the same.

The backpack type power spreader A, as shown in FIG.
The blower case 12 and the engine E and the fuel tank 7 are placed on the lower plate of the backpack frame 3 formed in an L shape in a side view, and the medicine tank 11 is arranged on the upper part of the blower case 12. Medicine tank 11 and blower case 12
Are integrally formed by blow molding a resin. A blower fan is housed in the blower case 12, the output shaft of the engine E arranged in front of the blower case 12 is inserted into the blower case 12, and the blower fan is fixedly installed on the output shaft. The fan is driven directly by E. 8 is an air cleaner.

A shutter housing portion is formed between the blower case 12 and the medicine tank 11 to house the shutter. On the other hand, a lever guide 4 is provided on the side of the blower case 12, and the lever guide 4 projects an accelerator lever and a drug metering lever rearward, the accelerator lever is connected to the engine E, and the metering lever is the shutter. The rotation speed of the engine E can be adjusted by rotating the accelerator lever, and the spray amount can be adjusted by rotating the metering lever. Then, one end of the jet port 5 of the present invention is connected to the jet port 12a at one end (right side in FIG. 1) of the blower case 12. A bellows-shaped pipe 12b is arranged at the ejection port 12a so as to be swingable.

In such a structure, the medicine tank 11
Then, the granules are put in and the backpack type power spreader A is carried on the back of the field, and the engine E is driven to drive the blower case 12
Rotate the blower fan inside, adjust the spray amount of the drug by operating the metering lever, and also the rotation speed of the blower fan, that is,
The magnitude of the wind force is adjusted by an accelerator lever, and the medicine in the medicine tank 1 is dropped into the blower case 12 by a set amount by the wind force generated by the rotation of the blower fan and is sprayed from the nozzle 5.

Next, the structure of the injection port 5 of the present invention is shown in FIGS.
More will be described. The injection port 5 has a housing 13 made of synthetic resin. The housing 13 is formed in a hollow triangular prism shape, and has a spray port 13a for opening the front surface to discharge the granules, and a rotating shaft 14 on the lower surface of the center. A fan 17 is inserted into the housing 13 by opening the insertion hole 13b, and the rotary shaft 14 is inserted into the shaft center of the fan 17 through the insertion hole 13b with the fan 17 inserted. The upper part of the case is the bearing 1 in the housing 13.
5, the lower portion of the rotary shaft 17 is rotatably supported by a lid 19 that closes the insertion hole 13b via a bearing 16.

The front end of the connecting pipe 13c communicates with the upper surface of the rear part of the housing 13, and the communicating position is eccentric from the rotary shaft 14 so that the fan 17 can rotate. The rear end of the connecting pipe 13c extends upward and rearward and communicates with the jet outlet 12a. The front both side surfaces of the housing 13 are also open, and the opening portions on both side surfaces are covered with the spray width adjusting covers 20. The spraying width adjusting covers 20 and 20 are symmetrically arranged, so only one side will be described. The spread width adjusting cover 20 is formed in a fan shape in a plan view and in a U shape in a front view, and the arc center (rear end side) is pivotally supported by a pivot shaft 21 provided in a vertical direction on the side surface of the housing 13 to provide a spread width. An arcuate elongated hole 20a centering on the pivot 21 is opened on the front upper surface of the adjustment cover 20, and the thumbscrew 22 is inserted into the elongated hole 20a and fastened to the housing 13 to spread the spread width adjusting cover 20. It can be rotated and fixed at any position. With this configuration, the size of the spray port 13a can be changed.

As another embodiment of the nozzle 5, FIG.
It can also be configured as shown in FIG. That is, the casing 13 'of the injection port 5'is formed in a hollow columnar shape, the front surface is opened to form the spray port 13a', and the connection pipe 13c 'is formed on the rear surface.
Is eccentrically communicated with the rotary shaft 14 'to the left or right, extends rearward through the connection pipe 13c', and has a rear end communicated with the ejection port 12a. In this way, it is possible to transport the granules in the horizontal direction without dropping them from above as described above. A rotating shaft 14 'is rotatably arranged in the center of the housing 13' through bearings 15 'and 16' in the same manner as described above, and a fan 17 'is fixed to the rotating shaft 14 so that the housing is It is stored rotatably in 13 '. The fan 17 'is provided with a bottom plate 17a' so that the fan 17 'itself can carry and discharge without dropping to the bottom of the housing 13'. Further, the blade 17b 'may be a curved surface instead of a flat plate. Then, the spray port 13
The opening area a'can be changed by the spread width adjusting cover 20 '. The spread width adjusting cover 20' is formed in a fan shape in plan view, and the spread width adjusting cover 2 '
0'is provided with a rotary shaft core above the rotary shaft 14 'which is the center of rotation of the fan 17' so as to be rotatable, and the spraying width can be adjusted by changing the area covering the spraying port 13a '. .

In such a structure, the injection port 5 (5 ')
When the backpack-type power spreader A is driven by connecting the connecting pipe 13 (13c ′) of No. 1 to the ejection port 12a, the medicine tank 1
The granules dropped from 1 are carried by the wind generated by the rotation of the blower fan in the blower case 12 along the inner peripheral surface of the blower case 12, and reach the jet port 5 (5 ′) from the jet port 12a. A fan 17 in the nozzle 5 (5 ')
(17 ') is rotated by the wind from the blower fan,
The granules are placed on the blades (17b ') of the fan 17 (17') and are conveyed in the circumferential direction, and the spray port 13a (13a ')
It spreads out more like a fan and is emitted and scattered. This spout 1
The opening area of 3a (13a ') has a spreading width adjustment cover 20.
It is changed by rotating the 20 (20 ') so that the spread that is released according to the work can be changed.

[0013]

According to the present invention, the following effects can be obtained by the above configuration. That is, since the fan 17 is provided at the injection port 5, the granules are not linearly discharged from the ejection port 12a, and can be carried in the circumferential direction by the fan 17, and spread out in a fan shape from the spray port 13a. It was then released and was able to be spread over a wide area. The size of the spray port 13a can be changed by the spray width adjustment cover 20, and the width of the spread can be changed, the spray range can be adjusted according to the work, and the spray port 5 can be easily replaced without replacement. You can now adjust to. Further, since the fan 17 is rotated by the wind sent from the power spreader A on the main body side, it is not necessary to provide a power source at the injection port 5 itself, and the structure can be made lightweight and inexpensive.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a granule is sprayed by connecting a granule spray nozzle of the present invention to a backpack type power spreader.

FIG. 2 is a side cross-sectional view of the granulation nozzle of the present invention.

FIG. 3 is a plan view of the same.

FIG. 4 is a side cross-sectional view showing another embodiment of the granulation nozzle.

FIG. 5 is a plan view of the same.

FIG. 6 is a partial cross-sectional plan view of a conventional granulation nozzle.

FIG. 7 is a side view of a conventional granulation nozzle.

[Explanation of symbols]

 A power sprayer 5 jet 12 blower case 12a jet 13 casing 13a sparging 13c connecting pipe 17 fan 20 spraying width adjustment cover

Claims (1)

[Claims] 1. A jet nozzle 5 connected to a jet nozzle 12a of a power spreader A for spraying granules, wherein a casing 1 of the jet nozzle 5 is provided.
3, a fan 17 is rotatably accommodated in the housing 3, a connection pipe 13c connected to the ejection port 12a is communicated with one side of the housing 13, and a spray port 13a is opened on the other side of the housing 13 to distribute the spray. Spreading width adjusting cover 2 that allows the opening width to be adjusted to the mouth 13a
A sprinkling spout that is characterized in that 0 is arranged.