JP2000004762A - Applicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an applicator having simplified structure, precise without any effect by the applying amount, enabling rapid chemical spray, enhancing the workability and the reliability by installing a specific combined shutter device in a shutter storing part. SOLUTION: This applicator is installed with a combined shutter device 46 composed of multiple type shutter parts 47, 48 suitable for various spraying amounts at a shutter storing part formed between a chemical tank and a blower case. The combined shutter device 46 preferably comprises a small shutter upper plate 15a partly having a small opening 57, a rotary shutter 49 contacting to the lower side of the upper plate 15a, a rotary shutter part 47 adjusting the spraying amount by the rotation of the shutter 49, a large shutter upper plate 15b partly having a large opening 58, a dumper shutter 52 laterally pivoted at the lower face of this upper plate 15b, and a dumper shutter part 48 adjusting the spraying amount by the opening of this shutter 52.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compound shutter device in a backpack type power spraying machine which has improved accuracy in setting a spraying amount when spraying a small amount.

[0002]

2. Description of the Related Art Conventionally, a disc-shaped slide shutter has been provided between a medicine tank and a blower case to adjust the amount of medicine dropped from the medicine tank into a blower case. The slide shutter is interlocked with the metering lever, and the opening of the slide shutter is changed by the rotation of the metering lever, so that the area of the overlapping portion of the opening of the slide shutter is reduced. Had to be changed.

In order to reduce costs by reducing the number of parts by simplifying the mechanism, a semi-cylinder having a cylindrical side surface abutting below a curved opening is pivotally supported on a horizontal axis and rotated.
A rotary shutter that adjusts the amount of drug falling into the blower case was also employed.

Further, in recent years, instead of a slide shutter, a damper shutter which pivots a plate provided below a flat plate opening on a horizontal axis and rotates up and down has been employed in order to cope with a large amount of spraying. It has come to be.

[0005]

However, in the case of a slide shutter, in order to cope with a small amount of spraying to a large amount of spraying, the opening overlapping portion is made small and large in number, and the total amount is adjusted by a slight rotation of the metering lever. The application amount was changed easily.

For this reason, when the amount of spraying is small, it is necessary to narrow the gap per one overlapping portion of the opening, and there is a risk that the fertilizer / large-grained drug will not fall due to being caught in the gap. Also, in the case of fine powdered medicine, etc., when the medicine etc. is new, since it has good fluidity, it falls smoothly even if the opening overlap part is narrow, but if the storage state is poor or the work is long, moisture There is a problem that the fine powder easily adheres to the edge of the opening dropping portion due to impurities, causing clogging and preventing falling.

On the other hand, in the case of a rotary shutter,
If the opening is enlarged for a large amount of spraying, there is a problem in that, when spraying for a long time, the friction between the shutter and the upper plate becomes excessive due to deterioration of the members and clogging of chemicals and the like, and the shutter becomes difficult to rotate. Was.

[0008] In the case of a damper shutter, it is easy to spray a large amount, but when spraying a small amount, since the medicine spilled from the side, the precision of the spray amount adjustment is poor and it is difficult to make fine adjustments. There is a problem that the desired medicinal effect may not be obtained depending on too much or too little depending on the case.

In view of the above, the present invention provides a spraying machine capable of performing high-precision spraying from small-scale spraying to large-scale spraying by appropriately arranging a plurality of shutters of a type suitable for each spraying amount. Aim.

[0010]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. That is, in claim 1, there is formed a shutter housing portion between the medicine tank and the blower case, and the shutter housing portion includes a composite shutter device including a plurality of types of shutter portions suitable for the amount of spraying. It is provided.

According to a second aspect of the present invention, the composite shutter device includes a rotary shutter unit for adjusting a spray amount,
And a damper shutter section.

In the third aspect, the composite shutter device includes a small opening shutter upper plate partially having a small opening and a rotary shutter abutting on a lower surface of the small opening shutter upper plate. A rotary shutter portion for adjusting a spraying amount by rotation of the rotary shutter, a large-opening shutter upper plate partially having a large opening portion, and a damper shutter horizontally supported on the lower surface of the large-opening shutter upper plate. And a damper shutter unit that adjusts the amount of spraying according to the degree of opening of the damper shutter.

According to a fourth aspect of the present invention, there is provided a one-axis driving section which is capable of rotating only one of the rotation axis of the rotary shutter and the rotation axis of the damper shutter.

According to a fifth aspect of the present invention, there is provided a two-axis drive unit which is capable of independently rotating the rotation axis of the rotary shutter and the rotation axis of the damper shutter.

According to a sixth aspect of the present invention, there is provided a shutter opening display device interlocked with the rotation of the rotation axis of the rotary shutter and the rotation axis of the damper shutter.

[0016]

Next, an embodiment of the present invention will be described. 1 is a front view of a backpack type power spreader, FIG. 2 is a partial cross-sectional view of the same side, FIG. 3 is a side cross-sectional view of a shutter portion, FIG. 4 is a side cross-sectional view of the composite shutter device of the present invention, and FIG. FIG. 6 is a plan view of the same from the lower surface. FIG. 7 is a plan view of a single-axis driving device of the rotating shaft of each shutter. FIG. 8 is a plan view of a two-axis driving device of the rotating shaft of each shutter. FIG. 9 is an overall perspective view of the shutter opening display device.

First, the overall structure of a sprayer according to the present invention will be described with reference to FIGS. A medicine tank 1 is arranged at an upper part, and a blower case 2 is arranged at a lower part. The medicine tank 1 and the blower case 2 are integrally formed by blow molding a resin.

The front of the blower case 2 has an engine 26
However, a blower fan is disposed in the blower case 2, and the blower fan is fixed on the output shaft of the engine 26. The medicine tank 1, the blower case 2, the engine 26, and the like are mounted on a backpack frame 3 formed in an L shape in a side view. 7, a fuel tank; and 8, an air cleaner. Since the fuel tank 7 is located below the engine 26, a pulse pump 9 is provided above the fuel tank 7 in order to forcibly send fuel to the engine 26 above.

A shutter accommodating portion 25 is formed between the blower case 2 and the chemical tank 1.
A rotary shutter portion 47 and a damper shutter portion 4 are provided in the storage case 10 also serving as a lower portion of the medicine tank 1.
8 and the like, and one end of an injection pipe 5 is connected to an injection port provided at one end (right side in FIG. 1) of the blower case 2. A lever guide 4 is provided on the side of the blower case 2 so that an accelerator lever and a medicine adjusting lever 33 project rearward, and the rotation is guided by the lever guide 4.

Therefore, in the field, while carrying the backpack type power sprayer, the blower fan in the blower case 2 is driven by the driving of the engine 26, and the size of the blower is adjusted by the accelerator lever. The amount of spray can be adjusted by operating the metering lever 33 by using the blowing air, and the medicine can be sprayed from the inside of the medicine tank 1 through the injection pipe 5.

Referring to FIGS. 3 and 4, a description will be given of the shutter accommodating portion 25 of the sprayer having the above-described overall configuration.

On the inner surface of the storage case 10 between the medicine tank 1 and the blower case 2, a shutter frame 11 integrated with the shutter upper plate 15 and a rotary shutter portion 47 and a damper shutter portion of the present invention are provided thereon. A composite shutter device 46 in which the shutters 48 are opposed to each other is formed.
7, the both sides of the fastener 19 are hooked to a portion (not shown) on the inner surface of the upper part of the storage case 10, and the fastener 17 is screwed onto the circumference of the fastener 19 to tighten the stabilizer 17. By pressing the shutter downward, the composite shutter device 46 is fixed so as not to rattle.

Next, the composite shutter device 46 of the present invention will be described with reference to FIGS.

The shutter upper plate 15 covering the upper surface of the composite shutter device 46 is inclined so that the diameter portion corresponding to the approximate center between the rotation axes of the shutters is the lowest, and the upper portion of the shutter 15 is bordered by the diameter portion. A rotary shutter portion 47 having a small opening shutter upper plate 15a is arranged on the other side, and a damper shutter portion 48 having a large opening shutter upper plate 15b is arranged on the other side.

The lower half of the small opening shutter upper plate 15a is composed of a curved surface portion 15e having a cylindrical side surface centered on the rotary shutter rotation shaft 51, and is upward from the lowest position of the curved surface portion 15e. A rectangular small opening 57 is opened toward the front.

The guide frame 15c extends from the periphery of the small opening 57.
, And the rotary shutter rotating shaft 51 is supported by both side plates of the guide frame 15c. A spring support plate 60 provided with guide side plates 50 on both sides is fixed on the rotary shutter rotation shaft 51, and a spring 59 provided with a rotary shutter 49 at the other end on the spring support plate 60.
Are fixedly supported, and the rotary shutter 49 in contact with the small opening 57 can be rotated in a constantly biased state. A gap is provided between the small opening shutter upper plate 15a and the rotary shutter 49. Does not occur.

That is, when a small amount is sprayed by the rotary shutter portion 47, since the medicine does not spill out from the gap of the small opening portion 57, the spray amount can be accurately controlled.

Further, in the damper shutter section 48, a wide rectangular large opening 58 is opened upward from the lowest portion of the large opening shutter upper plate 15b. A guide frame 15d is hung from the periphery of the large opening 58, and a damper shutter rotation shaft 53 is supported on both side plates of the guide frame 15d.

A damper shutter 52 is pivotally supported on the damper shutter rotation shaft 53 so as to be rotatable up and down so as to open and close a large opening 58 so that the amount of medicine falling from the medicine tank 1 can be adjusted. .

Therefore, when handling a larger amount of medicine than usual, the damper shutter 48 is used, and when spraying a small amount, the rotary shutter 47 is used. Can be applied.

Next, a method of driving the rotary shafts of the rotary shutter and the damper shutter will be described with reference to FIGS.

FIG. 7 shows a case of uniaxial drive in which both rotation shafts are driven by one axis. A rotary shutter gear 67 is fixed on the rotary shutter rotating shaft 51 with a set screw 62, and a damper shutter gear 68 is located at a position that does not overlap with the rotary shutter gear 67 in the axial direction.
The damper shutter gear 68 is also fixed on the damper shutter rotation shaft 53 with a set screw 63.

A shutter driving shaft 64 is fixed to the storage case 10 between the rotary shutter rotating shaft 51 and the damper shutter rotating shaft 53, and the shutter switching gear 20 is loosely fitted to the shutter driving shaft 64. ing.

The shutter switching gear 20 is composed of two types of gears having different radii. A sliding ball 65 urged in the axial direction by a spring 66 is provided on the inner surface of the bearing portion. Further, the shutter drive shaft 64
Two ball grooves 64a, 64b for locking the sliding ball 65 are provided on the outer periphery of the ball.

In such a configuration, when the shutter switching gear 20 is pushed into the inside of the machine and the sliding ball 65 is locked in the ball groove 64a inside the machine, a long radius of the shutter switching gear 20 is formed. When the gear 20d meshes with the rotary shutter gear 67 and pulls the shutter switching gear 20 outward, the sliding ball 6 is inserted into the ball groove 64b on the outer side of the machine.
5, the short-gear gear 20e of the shutter switching gears 20 is used as the damper shutter gear 6.
8 meshes.

That is, the shutter switching gear 20
By sliding the shutter on the shutter drive shaft 64 in the front-rear direction of the fuselage, the rotatable shutter rotation axis is changed, and the shutter unit that opens and closes is the rotary shutter unit 4.
7 or the damper shutter section 48.

A swing link 20a is integrally fixed to the shutter switching gear 20.
0a is pivotally connected to the connecting link 22 shown in FIG. 1, and the other end of the connecting link 22 is connected to the metering lever 33. By rotating the metering lever 33, the connecting link 22 Each shutter shaft can be rotated via a drive shaft 64.

By changing the connection position between the upper end of the connection link 22 and the swing link 20a, the rotation angles of the shutters are different even if the adjustment lever 33 has the same rotation amount. Can be.

For example, when the damper shutter portion 48 is used, by setting the connection position to the connection hole 20c, the change in the rotation angle of the shutter can be made large, which is suitable for a large amount of spraying. Conversely, by forming the holes 20b, the change in the rotation angle of the shutter is reduced, and the shutter 20 is suitable for the normal amount of spraying.

FIGS. 8 and 9 show two-axis driving in which the rotary shutter rotating shaft 51 and the damper shutter rotating shaft 53 are driven by the respective shafts.

In FIG. 8A, a rotary shutter swing link 70 is fixed on the rotary shutter rotating shaft 51, and a connection hole 70a is formed in the rotary shutter swing link 70. A damper shutter swing link 71 fixed to the same side as the rotary shutter swing link 70 is provided on the damper shutter swing shaft 53 to avoid interference, and is connected to the damper shutter swing link 71. Holes 71a and 71b are drilled.

In this case, the switching of the shutter section to be used, that is, the switching between the rotary shutter section 47 and the damper shutter section 48 can be performed by changing the swing links 70 and 71 connected to the connection link 22. .

FIG. 8B shows that the swing link can be more easily operated. Fig. 8 shows the rotary shutter rotation side
Same as (a), except for the damper shutter rotation side.

That is, the rotary shutter rotating shaft 5
1 and storage case 1 between damper shutter rotation shaft 53
A rotation shaft 72 is pivotally supported at 0, and a damper shutter swing link 75 extends from the rotation shaft 72 on the same side as the rotary shutter swing link 70. Further, one end of an intermediate link 73 is fixed to the rotation shaft 72, and the other end of the intermediate link 73 extends from the damper shutter rotation shaft 53 after passing through a rotatable intermediate link 74. It is connected to a link such as a damper opening needle 77.

In this case, the distance between the pivot axes of the swing link (between 51 and 72) is substantially half of the distance between the pivot axes of the swing link (between 51 and 53) in FIG. Therefore, the force required for rotating the swing link is small.

In any case of the two-axis drive, the shutter section to be used is changed by one operation of changing the swing links 70 and 71 to be connected, as in the case of the single-axis drive in which the shutter switching gear 20 is slid. You can do it.

In the case of the two-axis drive, as in the case of the one-axis drive, interference between the axes due to an operation error or a variation in the dimensions of parts, for example, a small amount of the
The damper shutter 52 opens due to erroneous operation during use,
There is no danger of this, and it can be said that this is a more preferable driving method from the viewpoint of the reliability of setting the spray amount.

In such a configuration, the metering lever 33
When the is rotated, the swing link 20a is rotated by the one-axis drive, and the swing link 70 or 71 is rotated by the two-axis drive via the connecting link 22, and either the rotary shutter 47 or the damper shutter 48 is opened and closed. can do.

Therefore, when the rotary shutter 47 having the small opening 57 is used, the drop of a small amount of medicine can be adjusted with high accuracy according to the opening area.
When the damper shutter 48 having the large opening 58 is used, a high-precision small-volume spray can be performed, and the drop of the medicine more than the normal amount can be efficiently performed without clogging, so that the large-volume spray can be followed. It is.

Finally, the shutter opening display device will be described with reference to FIG.

In the two-axis drive shown in FIG.
The rotary opening scale 78 is provided on the outer surface of the chemical tank 1.
And a rotary opening needle 76 extending from the end of the rotary shutter rotating shaft 51 is disposed on the rotary opening scale 78.

Similarly, a damper opening scale 79 is provided on the outer surface of the medicine tank 1, and the damper opening scale 79 is provided.
On the upper side, a damper opening needle 77 extending from the end of the damper shutter rotation shaft 53 is arranged.

Thus, the shutter opening can be continuously checked, so that the control lever 3 as in the prior art can be used.
Compared to the coarse adjustment of the opening degree in several steps using only 3, the finer adjustment of the spray amount became possible.

[0054]

As described above, the present invention has the following advantages. That is, as in claim 1, a composite shutter device comprising a shutter storage portion formed between a medicine tank and a blower case, and the shutter storage portion includes a plurality of types of shutter portions suitable for the amount of spraying. Since it is provided, the medicine can be sprayed with high accuracy and speed regardless of the spray amount.

According to a second aspect of the present invention, the composite shutter device comprises a rotary shutter portion for adjusting the amount of spraying and a damper shutter portion. Therefore, the rotary shutter portion having high setting accuracy and the damper shutter portion having a large opening degree. Scattering that makes full use of the features described above becomes possible.

According to a third aspect of the present invention, the composite shutter device includes a small opening shutter upper plate partially having a small opening and a rotary shutter abutted on the lower surface of the small opening shutter upper plate. A rotary shutter unit that adjusts the amount of spray by rotating the rotary shutter,
A large-opening shutter upper plate partially having a large opening and a damper shutter horizontally supported on the lower surface of the large-opening shutter upper plate, and a damper for adjusting a spraying amount by an opening degree of the damper shutter. Since it is composed of a shutter part, when spraying a small amount, by using a rotary shutter part with less side leakage and clogging, it is possible to perform accurate spraying with a small variation with respect to the set spray amount, and when spraying a large amount, By switching to the damper shutter section which can obtain a large opening degree, the spray amount can be quickly changed to the set spray amount.

According to a fourth aspect of the present invention, there is provided a single-axis driving section which can rotate only one of the rotation axis of the rotary shutter and the rotation axis of the damper shutter.
The number of parts can be reduced and cost can be reduced.

According to a fifth aspect of the present invention, since a two-axis drive unit is provided, which can independently rotate the rotation axis of the rotary shutter and the rotation axis of the damper shutter, reliability in setting the spray amount can be improved. Can be improved.

According to a sixth aspect of the present invention, a shutter opening display device is provided which is interlocked with the rotation axis of the rotary shutter and the rotation axis of the damper shutter. In addition, since fine units can be confirmed, it is possible to easily perform the operation at the time of spraying a small amount, which requires higher accuracy.

[Brief description of the drawings]

FIG. 1 is a front view of a backpack type power spreader.

FIG. 2 is a partial cross-sectional side view.

FIG. 3 is a side sectional view of a shutter portion.

FIG. 4 is a side sectional view of the composite shutter device of the present invention.

FIG. 5 is a perspective view from above as well.

FIG. 6 is a plan view of the same from below.

FIG. 7 is a plan view of a single-axis driving device of a rotating shaft of each shutter.

FIG. 8 is a plan view of a two-axis driving device of a rotation shaft of each shutter.

FIG. 9 is an overall perspective view of a shutter opening display device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chemical tank 2 Blower case 15 Shutter upper plate 15a Small opening shutter upper plate 15b Large opening shutter upper plate 25 Shutter storage unit 46 Composite shutter device 47 Rotary shutter unit 48 Damper shutter unit 49 Rotary shutter 51 Rotary shutter rotating shaft 52 Damper shutter 53 Damper shutter rotation shaft 54 Uniaxial drive unit 55 Biaxial drive unit 56 Shutter opening display device 57 Small opening 58 Large opening

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kawaguchi ▲ Kyo ▼ Hi F-term (reference) 2B121 CB09 CB24 CB45 CB61 CB67 CB69 4F033 QA05 QB02Y QB03X QB12Y QB17 QD03 QD14 QE02 QF21X QF21Y QK16X QK16Y

Claims (6)

[Claims] 1. A shutter housing portion is formed between a medicine tank and a blower case, and the shutter housing portion is provided with a composite shutter device including a plurality of types of shutter portions suitable for the amount of spraying. A sprayer characterized by the following. 2. The spraying machine according to claim 1, wherein said composite shutter device comprises a rotary shutter section for adjusting a spraying amount and a damper shutter section. 3. The composite shutter device according to claim 1, further comprising a small-opening shutter upper plate partially having a small opening, and a rotary shutter in contact with a lower surface of the small-opening shutter upper plate. A rotary shutter portion that adjusts the spray amount by rotation, a large opening shutter upper plate partially having a large opening and a damper shutter that is horizontally supported on the lower surface of the large opening shutter upper plate are arranged, 3. The spraying machine according to claim 2, further comprising a damper shutter section for adjusting a spraying amount by an opening degree of said damper shutter. 4. The spraying machine according to claim 3, further comprising a single-axis driving unit that can rotate only one of the rotation axis of the rotary shutter and the rotation axis of the damper shutter. 5. The spraying machine according to claim 3, further comprising a two-axis drive unit that can independently rotate the rotation axis of the rotary shutter and the rotation axis of the damper shutter. 6. The sprayer according to claim 4, further comprising a shutter opening display device interlocked with the rotation of the rotation axis of the rotary shutter and the rotation axis of the damper shutter.