JPS5830602Y2 - granule spreader - Google Patents

Description

[Detailed description of the invention] The present invention relates to a granular sprayer, and more specifically, a backpack-type granular sprayer for spraying granular or granular fertilizers or agricultural chemicals with relatively large particle diameters. It is related to vessels.

Various types of sprayers have been used for the purpose of applying granular fertilizers, pesticides, etc. to farmland or crops.

In particular, because of the unique nature of agriculture in Japan, where there are many opportunities to spray fertilizers or pesticides on relatively small farmland areas, compact, backpack-type granular sprayers are widely used and are convenient to carry.

These granular material spreaders spray granular or granular fertilizers or pesticides stored in a backpack-type hopper from a nozzle at the tip of the hopper through a conduit connected to the hopper.
It is extremely easy to use and maintain since no special skill is required to operate it.

Although this granular material dispersing device has excellent usefulness, it is not without practical problems.

For example, when applying a relatively small amount of fertilizer or pesticide in spots, such as when cultivating cucumbers on a vinyl bed, the discharge of granules from the nozzle may be continued at desired time intervals. However, in conventional sprayers, the granule passage path from the granule continuous discharge mechanism provided in the conduit to the nozzle is relatively long, and a relatively large amount of granule remains in this path. Therefore, even if the above-mentioned continuous discharge mechanism is opened and closed at a desired time interval to apply the granules in spots, the granules actually discharged from the tip nozzle may not be synchronized with the opening and closing of the intermittent discharge mechanism. It is not possible to give an intermittent spot-like discharge movement.

That is, particulate or granular pesticides and fertilizers often form a substantially continuous discharge stream that has little to do with the opening and closing of the continuous discharge mechanism.

For this reason, in order to spray the desired amount of granules in spots at limited application locations, there are practical difficulties in controlling the time interval of spraying and the amount of spraying, and there is a strong demand for improvements in this area. .

Therefore, the main object of the present invention is to provide a granular material sprayer with excellent controllability, which allows accurate adjustment of the amount of granular material or granular material to be sprayed in spots and the time interval of spraying. There is a particular thing.

Another main object of the present invention is to provide a granular material spreader that is easy to manufacture, has few failures, and has a simple structure.

Another object of the present invention is to provide a highly versatile granular material spreader that can be used not only for sporadic spraying but also for linear or planar spraying. .

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a front view illustrating the overall structure of the granular material spreader according to the present invention, and FIG. 2 is a -0 view of the main part of the granular material spreader shown in FIG. 1.

3 is a cross-sectional view of the main part of the apparatus taken along the line A--A in FIG. 2.

In the drawing, a backpack-type hopper 1 containing granules or granules such as fertilizers or agricultural chemicals has a conduit 3' having a flexible portion 3 connected to the bottom 2 of the hopper, and a tip of the conduit 3'. In this step, the granules or granules sent from the hopper 1 are discharged.

Nozzle 4 is connected.

On the other hand, the nozzle connecting end of the conduit 3' is provided with a mechanism for stopping the outflow of granules, which will be described later. An operating handle 5 is provided.

The mechanism for stopping the flow of particulate matter in the illustrated embodiment is as follows:
a gate valve plate 7, which is a gate valve mechanism provided in the conduit line at the nozzle connection end of the conduit 3', and is movable in a direction substantially perpendicular to the axis of the conduit line within a gap 8 provided in the conduit line 3'; A rocking rod 7 fixed to the shaft 7', a bearing 10 provided on the outer periphery of the granule discharge side [-1] of the conduit 3' close to the nozzle connection end, and a predetermined shaft support interval on the outer periphery of the conduit 3'. A shaft 11. is rotatably supported by a bearing 12 disposed to hold the shaft 11. and extends from the adjustment mechanism toward the bottom 2 of the hopper 1 to the movable range of the operator's arm. The above-mentioned swinging rod 7 fixed to the shaft 11, a spring 6 fitted to the shaft 11 for urging the operating handle 5 to be described later, and an adjustment handle that engages with an opening area adjustment mechanism of a gate valve plate (not shown). It is formed from 9.

Further, in the conduit 3', an operating handle 5 for remotely controlling the above-mentioned particle outflow stop mechanism within the movable range of the operator's arm is eccentrically connected to the other end of the shaft 11. It is provided in a manner.

Hereinafter, the mode of operation of the device of the present invention will be explained based on an example of spot-like dispersion of granules.

First, an opening area adjustment mechanism (not shown), such as an eccentric cam, provided close to the nozzle connection end of the conduit 3' is adjusted;
By predetermining the height at which the handle 9 can approach the conduit 3', the maximum amount 11 area of the gate valve plate 7' is established.

In the embodiment shown in FIG. 3, the swinging rod 7 fixed to the shaft 11 moves in a direction substantially perpendicular to the axis of the conduit 3'.
The gate valve plate 7' is swung within the gap 8 along the cross-sectional direction of the conduit 3' to provide the maximum opening position illustrated by the dashed double-dashed line.

This maximum opening position means that the adjustment handle 9 is in the conduit 3'.
This can be freely selected by changing the height that can be approached to B, but since it is undesirable for it to change while the granular material spreader is in use, after setting B, the opening area adjustment mechanism should be Fixed in position to ensure a nearly constant opening area.

On the other hand, the spring 6 fitted to the shaft 11 is configured to rotate the swinging rod 7 so that the gate valve plate 7' completely closes the conduit 3' in the normal state.
and press the operating handle 5.

After filling the hopper 1 with the granules or granules to be spread, the operator carries the granule spreader on his back using a known attachment means such as a fixing band, and the operator's arm from the granule outflow stop mechanism. The operating handle 5 connected to one end of the shaft 11, which extends over the movable range of , is pressed in the direction shown by the arrow in FIG. move into position.

In this way, the conduit 3' is opened with a predetermined opening area, and the particles or granules are discharged from the nozzle 4 via the conduit 3' and the variable opening mentioned above while the operating handle 5 is pressed. be done.

As is clear from the above explanation, since the length of the conduit from the granular outflow stop mechanism to the nozzle in the device of the present invention is short, the ejection movement of the granular material from the nozzle is controlled by the gate valve plate provided in the outflow stop mechanism. Accurately follows the opening and closing movements of the

Therefore, even when a relatively small amount of granular fertilizer or pesticide is applied in spots, as seen in the vinyl bed cultivation of cucumbers, intermittent spora (spora) and spores that synchronize with the opening and closing movement of the outflow stop mechanism can occur. Granules can be spread accurately.

As is clear from the above description, the device of the present invention is extremely effective in being able to spray granular or granular fertilizers or pesticides in spots, lines, or areas under accurate temporal and quantitative control. It has practical value.

[Brief explanation of drawings]

FIG. 1 is a front view illustrating the overall structure of a granular material spreader according to the present invention, and FIG. 2 is a front view of the main part of the granular material spreader shown in FIG. 1. 3 is a cross-sectional view of the main part of the apparatus taken along the line A--A in FIG. 2. 1: Hopper, 2: Hopper bottom, 3': Conduit, 4: Nozzle, 5: Operation handle, 6: Spring, 7: Swinging rod, 8: Gap.

Claims (1)

[Scope of utility model registration request] A backpack-type hopper containing granular material, a conduit having a flexible portion extending from the bottom of the hopper, a nozzle connected to the tip of the duct, and a stopper for the granular material provided at the nozzle connection end of the conduit. and an operation handle for remotely operating the stop mechanism provided on the conduit within a range of movement of the operator's arm, the stop mechanism being able to move in and out of the conduit by rotation. A gate valve plate that opens and closes the
a shaft having at one end a swinging arm fixed to one end of the gate valve plate and rotatably pivoted to the outside of the conduit; the other end of the shaft extends along the conduit to and is connected to the operating handle;
Spreading of granular material, wherein the shaft is rotated by pressing the handle toward the conduit, and the normally closed gate valve plate is rotated to open the conduit. vessel.