JP2510973Y2 - Shutter structure of power spreader - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a shutter structure of a power spreader such as a backpack power spreader, and more specifically, stabilizes the amount of the spraying agent discharged from the spraying agent tank. The present invention relates to a shutter part structure of a power spreader that can be used.

[Conventional technology]

Japanese Utility Model Laid-Open No. 61-132073 discloses a backpack power spreader in which a discharge case, a shutter case, and a spray agent tank are sequentially mounted from the bottom to the top of a fan case of a blower, and pressurized air generated by the blower. It is disclosed that a part of the above is guided to the lower part of the outlet of the shutter case. Then, the pressurized air guided to the lower part of the outlet conveys the spraying agent falling from the outlet to the pipe part of the discharge case, and partly mixes with the spraying agent below the shutter. In addition, the other part enters the upper part of the shutter through the opening part of the outlet and is mixed with the spraying agent on the upper part of the shutter. The mixture of air and the spraying agent stabilizes the amount of the spraying agent discharged.

[Problems to be solved by the device]

In such a conventional technique, there are only two mixing parts of the pressurized air and the spraying agent, that is, the lower side and the upper side of the shutter, and there is room for improvement in mixing.

The purpose of this invention is to improve the mixing of air and dusting agent in a power spreader that directs pressurized air to the bottom of the shutter.

[Means for solving the problem]

The invention will be described using the reference numerals of the drawings corresponding to the embodiments.

The structure of the shutter of the power spreader (10) of the present invention comprises the following components (a) to (d).

(A) A lead-out port (22) for leading out the spraying agent in the spraying agent tank (16) from below the spraying agent tank (16) (b) A lead-out port (22) hanging down from the peripheral portion of the outlet port (22). ) Surrounding the lower part of the above) and having a first wall portion (40), a second wall portion (42), a third wall portion (44) and a fourth wall portion (46) in the circumferential direction in order. The rectangular tubular portions (32) (c) are rotatably disposed in the outlet (22), and when opened, the first wall portion (40) side and the third wall portion (44) side halves are respectively formed. A shutter (24) that swings toward the spray agent tank (16) and the rectangular tube portion (32) (d) An outlet provided below the rectangular tube portion (32) and away from the rectangular tube portion (32). The receiving portion (36) for receiving the spraying agent falling from (22), and the first wall portion (40) applies the pressurized air to the second wall portion (42) and the fourth wall portion (46). Windows that run along (50)
And a gap (54) is formed between the pressurized air and the receiving portion (36) so as to flow along the receiving portion (36).
Further, the pressurized air flowing along the second wall portion (42) and the fourth wall portion (46) is directed toward the first wall portion (40) side half of the shutter (24). An inclined plate (52) is arranged.

[Action]

The first portion (B) of the pressurized air passes through the window (50) of the first wall portion (40) and enters the rectangular tubular portion (32), and the second portion of the rectangular tubular portion (32). Wall portion (42) and fourth wall portion (46)
Along the inclined plate (52), the shutter (2
4) Directed toward the first wall part (40) side half,
Enter above the shutter (24). Since the half of the shutter (24) on the side of the first wall portion (40) swings toward the spray agent tank (16) when the shutter (24) is opened, the first portion of the pressurized air is not moved. The portion (B) smoothly rises along the slope of the lower surface of the half portion of the shutter (24) on the first wall portion (40) side,
The light enters into the upper side of the shutter (24) through the half opening portion of the outlet (22) on the first wall portion (40) side.

The second part (C) of the pressurized air enters below the rectangular tube part (32) through the gap (54) between the lower end of the first wall part (40) and the receiving part (36). , A bottom flow that flows along the receiving portion (36). A part of the bottom surface flow blows up from the receiving part (36) as the third part (D) of the pressurized air and collides with the third wall part (44) of the rectangular tube part (32), Ascends along the third wall portion (44) and enters above the shutter (24) through the half opening portion of the outlet (22) on the side of the third wall portion (44).

The spraying agent on the upper side of the shutter (24) is first agitated by the third portion (D) of the pressurized air that has entered the upper side of the shutter (24), and the air is sufficiently mixed therein. Next, the first wall portion (40) side of the outlet (22) and the third wall portion (44).
The first portion of the pressurized air ((1) of the pressurized air that has fallen into the rectangular tube portion (32) through the opening portion on the side half and collides with the inclined plate (52) and the third wall portion (44) ( B) and the third part (D) collide with each other, the air is sufficiently mixed therein, and then the air falls into the receiving part (36). Then, it is conveyed by the bottom surface flow flowing along the receiving portion (36) and moves from the receiving portion (36).

〔Example〕

 Hereinafter, this invention will be described with reference to embodiments of the drawings.

FIG. 1 is a cross-sectional view showing the shutter structure of the backpack power spreader 10. At the top of the fan case (not shown) of the blower, the discharge case 12 and the shutter case 14 are arranged in order from the bottom.
And the spray agent tank 16 is mounted, clamped and fixed to each other. The annular packings 18 and 20 are disposed at the joint between the discharge case 12 and the shutter case 14 and at the joint between the shutter case 14 and the spray agent tank 16, respectively, and seal the joints by vertical clamping pressure. keeping. The rectangular outlet 22 is formed in the center of the shutter case 14 and communicates with the upper and lower sides. The shutter 24 has a square shape corresponding to the contour of the outlet 22, is disposed in the outlet 22, and has a shaft 26.
Rotates integrally with. The pillar portion 28 is formed on the shutter case 14 and protrudes upward, and the shutter cover 30 has the pillar portion 28.
It is supported by the upper end of and covers the outlet 22 and the upper part of the shutter 24. The rectangular tube portion 32 hangs down from the peripheral portion of the outlet 22 and surrounds the space below the outlet 22. The wind inlet 34 is formed at the end of the discharge case 12,
A part A of the pressurized air generated by the blower is guided toward the shutter case 14 by penetrating 12 up and down. The receiving portion 36 is the outlet
It is formed in the discharge case 12 so as to face the pipe 22, is slightly apart from the lower end of the rectangular tube portion 32, receives the spraying agent falling from the outlet port 22, and inclines downward toward the pipe portion 38. ing. The pipe portion 38 is formed following the receiving portion 36, extends toward the outlet of the fan case, and guides the spraying agent that has fallen to the receiving portion 36.

FIG. 2 is a perspective view of the main part of the discharge case 12 as seen from above. The pressurized air from the blower is, as indicated by A,
Pass through the wind inlet 34 from the bottom to the top, and insert the wind inlet 34 and the receiving portion 36.
After going around the upper end of the partition wall between and, it descends again and is guided to the receiving portion 36.

FIG. 3 is a perspective view showing the shutter case 14 taken along a predetermined horizontal section. The rectangular tube portion 32 has a first wall portion 40, a second wall portion 42, a third wall portion 44, and a fourth wall portion 46 in order in the circumferential direction.

FIG. 4 is a front view of the first wall portion 40. The first wall portion 40 has windows 50 on both sides of the central plate portion 48, and the window 50 is the second
Is formed along the wall portion 42 and the fourth wall portion 46 of the.

Returning to FIG. 3, the inclined plate 52 is integrally formed with the second wall portion 42 and the fourth wall portion 46 so as to face each window 50, and is arranged so as to move away from the window 50 in the upward direction. , Is inclined. Pressurized air A descends outside first wall portion 40, part B of which passes through side window 50 and flows along second wall portion 42 and fourth wall portion 46. Then, it collides with the inclined plate 52 and is directed upward.

In FIG. 1, the shutter 24 has a first wall portion when opened.
Rotate around the axis of the shaft 26 so that the halves on the 40 side and the third wall portion 44 side are respectively swung toward the spray agent tank 16 and the rectangular tube portion 32. The gap 54 is formed between the lower end of the first wall portion 40 and the receiving portion 36, and the remaining portion C of the pressurized air A blows from the lower end of the first wall portion 40 toward the receiving portion 36. Flows along the receiving portion 36. A part D of the pressurized air C is received by the receiving portion 36.
Is blown up from above, collides with the third wall portion 44, is directed upward, and enters above the shutter 24 through the half opening portion of the outlet 22 on the side of the third wall portion 44.

FIG. 5 is a view taken along the line V-V in FIG. 1, and the pressurized air A is
It is divided into a flow B passing through the window 50 along the second wall portion 42 and the fourth wall portion 46 and a flow C along the receiving portion 36. The part that blows up toward D
Becomes

 The operation of the embodiment will be described.

The first portion B of the pressurized air A flowing from the blower to the outside of the first wall portion 40 through the wind introduction port 34 passes through the window 50 of the first wall portion 40 and then the rectangular tubular portion 32. Enters the inside, flows along the second wall portion 42 and the fourth wall portion 46 of the rectangular tube portion 32, collides with the inclined plate 52, and the first wall portion 40 of the shutter 24.
It is directed toward the side half and enters above the shutter 24. The half of the shutter 24 on the side of the first wall portion 40 is a shutter.
Since the rocking agent tank 16 is swung toward the spray agent tank 16 when opened, the first portion B of the pressurized air follows the inclination of the lower surface of the half portion of the shutter 24 on the first wall portion 40 side. It smoothly enters above the shutter 24.

The other remaining portion C of the pressurized air A passes through the lower gap 54 of the first wall portion 40, flows toward the receiving portion 36, and becomes a bottom surface flow that flows along the receiving portion 36. A part D of the bottom flow C blows up from the receiving portion 36, collides with the third wall portion 44 of the rectangular tube portion 32, rises along the third wall portion 44, and reaches the first of the outlet ports 22. 3 enters above the shutter 24 from the half-opening portion on the side of the wall portion 44.

In this way, the portions where the spraying agent and the air collide and mix are the first wall portion 40 side with respect to the inclined plate 52, the inclined plate 52 side of the third wall portion 44, the shutter 24 and the shutter cover. And the second mixing chamber 56, which is formed in three places between 30 and 30, respectively.
A third mixing chamber 58 and a first mixing chamber 60 are formed.

The spray agent in the spray agent tank 16 first enters the first mixing chamber 60 and is mixed with air by collision with the pressurized air D. The second mixing chamber 56 and the third mixing chamber 56 and the third mixing chamber 56 in the rectangular tubular portion 32 are opened from the half opening portion of the outlet 22 on the first wall portion 40 side and the half opening portion of the outlet port 22 on the third wall portion 44 side. The air falls into the mixing chamber 58, and the air is mixed by the collision with the pressurized air B and the pressurized air D there. Thus, in the first mixing chamber 60, the second mixing chamber 56, and the third mixing chamber 58, the spray agent sufficiently mixed with air falls onto the receiving portion 36, and then the bottom surface flowing through the receiving portion 36. It is transported to the flow C and guided to the pipe section 38.

That is, the spraying agent falling to the receiving portion 36 is sufficiently mixed with air and does not drop as a lump,
It is possible to stabilize the derivation amount of the spraying agent.

[Effect of device]

In this invention, the pressurized wind introduced into the rectangular tube through the window of the first wall of the rectangular tube and flowing along the second wall and the fourth wall of the rectangular tube collides with the inclined plate. Then, the shutter is directed toward the first wall portion side half of the shutter. This allows
Pressurized air is made to collide with the spraying agent falling from the opening part on the first wall portion side of the outlet, and another mixing chamber is formed there, so that air is sufficiently supplied to the spraying agent. It can be included, and the derivation amount of the spraying agent can be stabilized.

[Brief description of drawings]

The drawings relate to an embodiment of the present invention. FIG. 1 is a cross-sectional view showing the shutter structure of a backpack power spreader, FIG. 2 is a perspective view of the main part of the discharge case seen from above, and FIG. FIG. 4 is a perspective view cut along a predetermined horizontal section, FIG. 4 is a front view of a first wall portion, and FIG. 5 is a view taken along the line VV of FIG. 10 …… backpack power spreader (power spreader), 16 …… spraying agent tank, 22 …… outlet port, 24 …… shutter, 32 …… square cylinder part, 36 …… receiving part, 40 …… first Wall part, 42 ... second wall part, 44 ... third wall part, 46 ... fourth wall part, 50
...... Window, 52 …… Sloping plate, 54 …… Gap.

Claims (1)

(57) [Scope of utility model registration request] 1. A lead-out port (22) for leading out the spraying agent in the spray agent tank (16) from a lower portion of the spray agent tank (16), and the guide port being hung down from a peripheral portion of the outlet port (22). Exit (22)
Surrounding the lower perimeter of the first wall part (4
0), a second tubular portion (42), a third tubular portion (44) and a prismatic tubular portion (32) having a fourth wall portion (46) and the outlet (22). When opened, the halves of the first wall portion (40) side and the third wall portion (44) side are rocked toward the spray agent tank (16) and the rectangular tube portion (32), respectively. A shutter (24) to be moved, and a receiving part (below the rectangular tubular part (32) which is disposed apart from the rectangular tubular part (32) and receives the spraying agent falling from the outlet (22). 36), and the first wall portion (40) allows the pressurized air to flow through the second wall portion (40).
Has a window (50) for flowing along the wall portion (42) and the fourth wall portion (46), and receives the pressurized air from the receiving portion (36).
So that it flows along the gap (5) with the receiving part (36).
4) is formed, and the pressurized air flowing along the second wall portion (42) and the fourth wall portion (46) is directed toward the first wall portion (40) of the shutter (24). A shutter part structure of a power spreader, characterized in that an inclined plate (52) directed toward one half of the above is provided.