JPH0461699B2 - - Google Patents

Description

[Detailed Description of the Invention] (1) Purpose of the Invention (Field of Industrial Application) The present invention relates to a nozzle for use in a dust spreader for powder and granular materials, such as fertilizers, agricultural chemicals, and seeds. It can be widely used as a nozzle.

(Prior art) Conventionally, a container such as a bag containing powder or granules is carried on one's back using a backpack belt, and a nozzle connected to the bottom of the container via a pipe is inserted into the container by grasping the pipe with one's hand and moving the nozzle from side to side. Spreaders configured to forcibly flow out and spread powder and granules while swinging in a direction are disclosed, for example, in Japanese Utility Model Publication No. 12-5002 and Japanese Utility Model Publication No. 36.
−20326 Publication, Utility Model Publication No. 49-41856, Utility Model Publication
The one disclosed in Japanese Patent No. 57-42255 and mentioned at the end has been put into practical use.

(Problems to be Solved by the Invention) This type of sprayer including the above-mentioned known technology has means in the pipe for adjusting the amount of powder and granules flowing out to the nozzle. However, the nozzle generally does not have means by which the flow rate from the nozzle can be directly adjusted, especially finely adjusted, if necessary. Therefore, since the nozzle is swung from side to side to forcefully flow out the powder and granules from the nozzle, it is difficult to control the amount of powder and granules to be sprayed by simply operating the adjustment means in the pipe. It is not possible to fine-tune the flow and disperse it economically and efficiently.

In view of the above-mentioned circumstances, an object of the present invention is to provide a nozzle for dispersing powder and granular materials, which can adjust the opening and closing of the opening of the nozzle.

(2) Structure of the Invention (Means for Solving Problems) The nozzle for a powder spreader according to the present invention has a structure in which the base end of the pipe is connected to the powder container through or through a flexible hose. It has a nozzle at its tip that allows the powder to flow out. The nozzle includes a first member having a side wall on a plate body integrally communicating with the pipe, and a side wall on the plate body, and the side wall slides on the side wall of the first member in the length direction of the both side walls. a second member movably fitted thereto. A plurality of openings and non-openings for opening and closing the openings of the opposing members are alternately arranged in rows on the both side walls at predetermined intervals in the length direction.

(Example) An example of the present invention will be described with reference to the drawings.
It is as follows.

In Figure 1, the powder and granular material spreader
A belt 2 for carrying it on one's back and a leg frame 3 that can be opened and closed for standing it up are attached to it. Further, a container 5, which is a bag having a cover 4, is suspended from a suspension frame (not shown) at the upper end of the backpack board 1. A pipe 7 is connected to one end corner of the bottom of the container 5 via a flexible hose 6. Inside the pipe 7, an opening/closing member (shown in the figure) is rotatably incorporated, which is operated by the operating member 9 to adjust the flow rate of the powder from the container 5 to the pipe. A nozzle 10, which is an object of the present invention, is integrally formed at the tip of the pipe 7.

As shown in FIGS. 2 to 4, the nozzle 10 is
The first member 11 is included. The first member 11 is the pipe 7
A plate body 12 that expands circularly through a communication port 14 with
It has a downward facing side wall 15 on its outer periphery. side wall 1
5, a plurality of openings 16 and non-openings 15a are arranged in rows alternately at a predetermined interval in the length direction, and a predetermined length in the length direction of the side wall is provided near the pipe 7. A notch 17 having a radius is provided.

Nozzle 10 further includes a second member 18 . Second
The member 18 has an upwardly facing side wall 20 on the outer periphery of a circular plate body 19. The side wall 20 has a plurality of openings 22 and non-openings 20a alternately arranged in rows at predetermined intervals in the length direction, and further aligns with the communication opening 14 to prevent powder and granules from entering. An incision 21 forming a fluid communication path and a gripping part 23 on one side of the incision 21
is provided. On the inner surface of the plate body 19, a hollow shaft 29 is provided in the center thereof, and a plurality of pins 2 whose length is not longer than the height of the side wall 20 are arranged around the hollow shaft 29.
4 and a plurality of through holes 25 in the tip region.

The second member 18 has a side wall 20 that is connected to the first member 11.
is fitted to the first member 11 so as to be slidable in the length (circumferential) direction of the side walls 15 and 20, with the gripping part 23 being located inside the side wall 15 and the notch 17. ing. In this fitted state, the screw 28 is loosely inserted into the hollow part of the hollow shaft 29 through the washer 27 from the top surface of the shaft hole 26 bored in the center of the first member 11, and the screw 28 is loosely inserted into the hollow part of the hollow shaft 29. It is screwed into the fitted nut 30.

Therefore, when the holding portion 23 is pushed in the circumferential direction, the second member 18 moves the shaft 2 with respect to the first member 11.
9 in the same direction, the opening 16 is the non-opening part 20a, and the opening 22 is the non-opening part 15a.
The opening is opened and closed, and the size of the opening is adjusted. In this case, the openings 16 and 22 are fully opened when the gripping part 23 collides with one end of the notch 17, and fully opened when the gripping part 23 collides with the other end.

According to such a nozzle 10, if the powder particles flowing into the nozzle via the pipe 7 are in the form of a lump, they will collide with each bin 24 and be loosened, and will be sorted by the bin, and the size of the opening will be An appropriate amount is allowed to flow out from the openings 16 and 22 whose height has been adjusted, and the through hole 25. In order to improve the loosening and sorting effect using the bins 24, at least one of the bins, preferably two bottles, is placed in front of and in the vicinity of the incision 21, as shown in the illustrated example.
The books or more are arranged at predetermined intervals.

The nozzle 10 is most preferably formed into a circular shape as shown in the figure, but the side wall 20
Other shapes may be used as long as the openings 16 and 22 can be adjusted to open and close by sliding.

(3) Effects of the Invention According to the nozzle for a powder spreader according to the present invention having the configuration as described above, the size of the opening formed in the side wall can be adjusted as appropriate. Therefore, it has features such as being able to finely adjust the amount of powder and granules to be sprayed from the opening and allowing it to flow out and spread economically and efficiently, making it extremely suitable for practical use as a nozzle of this type. Beneficial.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a powder spreader using a nozzle according to an embodiment of the present invention, Fig. 2 is an exploded perspective view of the nozzle, and Fig. 3 shows the nozzle with its opening fully open. Cross-sectional view, FIG. 4 is a cross-sectional view with the opening of the nozzle fully closed. 7...pipe, 10...nozzle, 11...first
Member, 12...Plate body, 15...Side wall, 15a...
Non-opening part, 16... Opening part, 17... Notch part, 1
8... Second member, 19... Plate body, 20... Side wall,
20a...non-opening part, 22...opening part, 24...
Pin, 25...through hole, 29...shaft.

Claims (1)

[Scope of Claims] 1. The proximal end of the pipe is connected to the powder container with or without a flexible hose, and the distal end thereof has a nozzle for discharging the powder and granular material, The nozzle includes a first member having a side wall on a plate body integrally communicating with the pipe, and a side wall on the plate body, and the side wall slides on the side wall of the first member in the length direction of the both side walls. a second member that can be fitted to the second member, and the both side walls have an opening and a non-opening portion that opens and closes the opening of the opposing member at a predetermined interval in the longitudinal direction. A nozzle for a powder spreader, characterized in that a plurality of nozzles are arranged in alternating rows. 2. The nozzle according to claim 1, wherein a plurality of bins whose length is not longer than the height of the side wall are arranged at predetermined intervals on the inner surface of at least one of the plate bodies. 3. The nozzle according to claim 1, wherein a gripping portion for the sliding operation is provided on an outer surface of the second member. 4. The first and second members are formed circularly,
The nozzle according to claim 1, wherein the latter slides in the circumferential direction with respect to the former. 5. The gripping portion is provided on the side wall of the second member and is movably interposed in the lengthwise direction in a cutout portion of a predetermined length provided on the side wall of the first member. 2. The nozzle according to claim 1, wherein the sliding range of said second member is restricted. 6 When the gripping part collides with one end of the notch, the openings of the first and second members meet and are fully opened, and when the gripping part collides with the other end of the notch, one of the openings 6. The nozzle according to claim 5, wherein the non-opening portion of the other member is located at the opening of the other member, so that the opening is completely closed. 7. The nozzle according to claim 1, wherein a plurality of through holes are bored in the tip region of the plate of the second member. 8. According to claim 1, the side wall of the second member is provided with an incision that matches a communication port with the pipe of the first member to form a flow path for powder and granules. nozzle. 9. The nozzle according to claim 4, wherein the first and second members are rotatably pivoted by a shaft at their centers. 10. The nozzle according to claim 1, wherein the first member and the pipe are integrally molded. 11. The nozzle of claim 1, wherein at least one of the pins is located at and near the incision. 12. The nozzle according to claim 9, wherein the pin is arranged around the axis.