JPH0143025Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to the improvement of a hand-cranked powder/granule sprayer used for spraying agricultural chemicals and the like.

PRIOR TECHNOLOGY In general, powder and granule agents such as agricultural chemicals tend to cause the so-called "bridging phenomenon" when attempting to discharge them from the bottom of the container. If this phenomenon occurs during spraying, the discharge of powder and granules stops, resulting in uneven spraying. It causes

Therefore, in manually operated hand-cranked granulators, etc., a stirring rod that is linked to a hand-cranked handle is placed in front of the granule discharge passage to loosen blockages caused by the bridging phenomenon.

Problems that the invention aims to solve Various types of stirring devices are used for the above purpose, but conventional ones have complicated structures, make loud operating noises, and require relatively large operating force. Many of them are unsuitable for hand-cranked powder and granule spreaders.

Means to Solve the Problems The present invention is a hand-cranked powder spreader equipped with a stirring device that has a simple structure and operates reliably, consisting of a combination of a rotating cam, a swinging drive arm, and a stirring rod. This is what we intend to provide.

Embodiments Next, the present invention will be described in detail based on embodiments shown in the figures.

The illustrated embodiment is a hand-cranked granulator in which the granules in the drug tank 1 are dispersed by rotating the rotary discharge disc 18 by turning the hand-cranked handle 2 by hand.

At the inner end of the hand-cranked handle shaft 3 that is pivotally supported in the gear chamber 4, a worm wheel 5 that drives the rotation discharge disk 18 and a rotation cam 6 having a cam groove 7 on the outer periphery are arranged so as to rotate together. is fixed to.

Next, a rod-shaped swinging drive arm 8 is arranged almost horizontally above and perpendicular to the handwheel shaft 3, and the pivot end 10 of the arm 8, which is bent downward in an L-shape, is placed inside the gear chamber 4. The follower 9, which engages with the cam groove 7, is inserted into the support piece 11 fixed to the support piece 11, and the follower 9, which engages with the cam groove 7, is fixed to the intermediate portion adjacent to the support piece 11 and closer to the pivot end 10.

As a result, as shown in FIG.
As the follower 9 engaged with the rotary cam 6 swings left and right with a predetermined amplitude as the rotating cam 6 rotates, the swing drive arm 8
The swing end 12 of the swing end 12 has an increased amplitude and swings left and right in a horizontal plane.

Next, an intermediate portion of a stirring rod 14 disposed along the extending direction of the swing drive arm 8 is rotatably supported on a bearing portion 13 provided at the bottom of the tank 1. One end of the stirring rod 14 is bent upward into an L-shape outside the tank 1, and is connected to the swinging end 12 of the swinging drive arm 8.
The engagement arm part 15 is formed as a relatively short engaging arm part 15 so as to be able to receive the swinging movement of the granule discharge passage 16 at the bottom of the tank 1. A swing agitating portion 17 is formed which is longer than the engaging arm portion 15.

Operation In the above-described configuration, when the handwheel 2 is rotated, the follower 9 is guided by the cam groove 7 and swings from side to side. The signal is transmitted to the stirring rod 14 after being enlarged by the ratio of the distance to the supporting end 10 and the distance from the follower 9 to the swinging end 12. Furthermore, the movement is determined by the distance from the bearing part 13 of the engaging arm part 15 of the stirring bar 14, which is bent upward in an L-shape, and the bearing part at the tip of the swinging stirring part 17, which is bent greatly in a step-like manner. Since the information is transmitted in a magnified manner according to the ratio with the distance from 13, it is possible to reliably cause the oscillating agitation section 17 to oscillate greatly.

Effects Therefore, according to the present invention, it is possible to provide a hand-cranked powder spreader equipped with an agitation device that is simple in structure, operates reliably, and is effective.

[Brief explanation of the drawing]

FIG. 1 is a sectional front view of the main part of a hand-cranked granulator according to an embodiment of the present invention, FIG. 2 is a sectional side view of the main part, and FIG. 3 is a plan view of the main part of FIG. 2. 1... Drug tank, 3... Hand-cranked handle shaft,
6... Rotating cam, 8... Rocking drive arm, 9... Follower, 10... Pivoting end, 12... Rocking end, 14...
Stirring bar, 15... engaging arm portion, 17... rocking stirring portion.

Claims (1)

[Scope of utility model registration request] A comparative arm that is swing-driven by a swing end 12 of a swing drive arm 8, which has a follower 9 that engages with a rotary cam 6 rotated by a hand-cranked handle shaft 3, is attached to an intermediate portion near the pivot end 10 of the follower 9. A hand-cranked powder and granule spreader characterized in that a swing stirring part 17, which is longer than the engaging arm part 15 of a stirring bar 14 having a short engaging arm part 15, is exposed to the inside of the medicine tank 1.