JPH0353734Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention is a reduction gear that is interposed between the prime mover and the impeller, and is removably attached to each of the prime mover and the impeller. This invention relates to an axial flow blower that is a small-volume sprayer that allows easy adjustment of the air flow rate during pest control, as well as facilitates inspection, cleaning, parts replacement, etc.

[Conventional technology]

When spraying chemical solutions in greenhouses using a small amount sprayer,
Conventionally, as shown in Fig. 5, a chemical solution is sucked from a chemical tank (not shown) into the nozzle 1 of a jet head J attached to the outside of one end of an axial blower, and is supplied by a compressor (not shown). An impeller 3 that mixes compressed air to form a smoky state and is rotated by a prime mover 2
Pressurized air is sent toward the nozzle 1 side from the direction of the arrow, and the chemical solution is uniformly spread to every corner of the house (not shown), thereby controlling pests. However, when spraying using the lever, if the amount of air sent by the impeller 3 is excessive, there is a risk of wind damage causing crops that can be cultivated and grown in the greenhouse to break or tilt, and the leaf surface to be scratched or damaged. In addition, in the latter stages of growth, the so-called harvesting period, when the air volume is too low, contrary to the above, it is difficult to avoid a decline in the control effect due to insufficient diffusion of smoke.
For the early and late stages of the crop growth process,
() Prepare separate air blowers with different capacities in advance, or () Adjust the air volume by opening the suction port.
Controls the rotational speed of the prime mover using voltage or frequency. In the figure, 4 is a casing, and 5 is a stationary blade.

[The problem that the idea aims to solve]

In case 1 in the prior art section mentioned above, the necessity to prepare a separate blower causes a rise in equipment costs, forcing the user to incur undue financial expense; The wind noise is large, and when spraying work is carried out in greenhouses near people's houses, it causes noise pollution (as spraying work is usually carried out from the evening until the next morning), which is a nuisance to the neighboring houses. The atomized chemical liquid collides with the spraying device, atomizes and becomes water droplets, which reduces the medicinal efficacy and makes it difficult to expect smooth growth of crops. The three-phase 200 volt induction motors currently available cannot be used, which is inconvenient for house users, and motors with frequency converters are expensive, so users are forced to incur unnecessary financial expense. It has the problem of being forced to do so.

This idea was proposed focusing on the above-mentioned problems, and its purpose was to easily adjust the air volume inside the greenhouse, avoid rising equipment costs, and reduce inspection and cleaning costs. , it is an object of the present invention to provide an axial flow blower for a small quantity spreader whose parts can be easily replaced.

[Means to solve the problem]

In order to achieve the above-mentioned object, the axial flow blower of the small-volume sprayer in this invention uses a mixture of compressed air and a chemical liquid ejected from a nozzle in a jet head fixed at the front end of a casing to rotate the impeller in the casing. In the small amount sprayer, which is configured to diffuse into the house in the form of smoke with flowing pressurized air directed toward the jet head, a speed reducer including a gear group is interposed between the impeller and the prime mover, The speed reducer is detachably attached to each of the impeller and the prime mover.

〔Example〕

Embodiments of this invention will be described below with reference to FIGS. 1 to 4.

Front and back (left side in front in each of Figures 1 and 4)
The right side is the rear. ), a stator blade 13 is fixed by welding or riveting to the front inner side of a casing C with dust-proof nets 11 and 12 stretched respectively, and the stator blade 13 is press-fitted and tightly fitted into the center of the stator blade 13, such as a two-pole electric motor. At the rear of the prime mover M, a reducer R housing a gear group G, which will be described later, is installed in series, and an impeller 15 fixed to the output shaft 14 of the reducer R is made to face the rear dustproof screen 12. With the rotation of the impeller 15, the casing C
Pressurized air is caused to flow from the rear to the front (indicated by the arrow in FIG. 1), and a jet head J similar to that shown in FIG. 5 is attached directly or indirectly to the dustproof net 11 in front. An annular protruding piece P protruding rearward of the motor M is fitted into a recess v at the front end of the reducer R, while at the rear end surface of the motor M,
Attach the reducer R to the female thread drilled on the outside of the protruding piece P.
Screw in the front end of the screw rod 16 that can be penetrated from the rear end,
A prime mover M and a reducer R are detachably attached. Also, a gear g is attached to a drive shaft d protruding from the rear end of the prime mover M.
are fitted and fixed together, and the gear g meshes with an input gear 19 which is rotatably supported on the input shaft 18 in the case 17 of the reducer R via a bearing b. 20 is fixed to the front of an intermediate shaft 21 rotatably supported by bearings b ₂ and b ₃ provided at the front and rear of the case 17, and the gear 22 of the case 17 is fixed to the gear 22 fixed to the rear of the intermediate shaft 21. A gear 23 fixed to the output shaft 14 rotatably supported by bearings e ₁ and e ₂ provided at the front and rear is engaged, and the rotation speed of the drive shaft d on the side of the prime mover M is reduced and transmitted to the output shaft 14. The center of the impeller 15 is screwed into the male screw s provided on the output shaft 14, and tightened with a nut n through a washer W. If necessary, the impeller 15 and the reducer R are connected to the output shaft 14 of the nut n. It is said that it can be separated by leaving from . The gears g, 20, 22, 23 and the input gear 19 are collectively referred to as a gear group G. In the figure, f ₁ , f ₂
is a spacing retaining piece, and h is a retaining ring 24 of the intermediate shaft 21.
is the cover.

[Effect]

Since this device has the above-mentioned configuration, during the spraying work, the input gear 19 is rotated by the gear g that is integrated with the drive shaft d rotated by the activation of the prime mover M, and thereby the gears 20, 22, The output shaft 14 rotates through the output shaft 23, and the rotation of the impeller 15 fixed on the output shaft 14 causes the pressurized air to flow in the direction of the arrow in FIG. The chemical liquid ejected from the tip of a nozzle (not shown) of a nozzle J fixed in the front, similar to that shown in FIG. 5, is made into a mist and is spread and dispersed within the house. Therefore, when the nut n is removed from the output shaft 14 and the screw rod 16 is removed from the prime mover M, the reducer R, the prime mover M, and the impeller 15 can be easily separated, and if necessary, prime movers with different capacities can be separated. Can be replaced with impellers of different sizes and reducers with different reduction ratios,
The air volume can be adjusted, and if the cover 24 is removed from the case 17, the gear 18 inside the case 17,
20, 22, 23, etc. can be inspected, cleaned, or replaced, and a desired reduction ratio can be obtained.

〔effect〕

According to this invention, when controlling greenhouses using a small amount sprayer, the prime mover and reducer impeller can be easily separated as necessary, so the gear group in the reducer can be decelerated depending on the growth status and type of crops in the greenhouse. By appropriately selecting the ratio, the rotation speed of the impeller can be adjusted to a desired value, and it is possible to prevent a decline in the pest control effect due to excessive or insufficient air volume generated by the impeller in the house, and to prevent wind damage due to excessive air volume. Compared to the conventional method, which required the use of separate blowers for the first and second stages of crop growth, one blower is sufficient, which does not increase the economic burden. There is no risk of disturbing nearby houses due to the noise generated during spraying, and there is no need for the complicated work of controlling the voltage of the prime mover as in the past. This has practical benefits such as obtaining the product of interest.

[Brief explanation of the drawing]

FIG. 1 is a partially cut away vertical cross-sectional view of an embodiment of this invention, FIG. 2 is a view taken along the - line in FIG. 1, and FIG. 4 is an enlarged sectional view taken along the line -- in FIG. 3, and FIG. 5 is a partially cutaway vertical sectional view of an axial flow blower of a conventional small-volume spreader. C...casing, G...gear group, J...head, M...prime mover, R...reducer, 15...impeller.

Claims (1)

[Claims for Utility Model Registration] (1) A mixture of compressed air and a chemical liquid ejected from a nozzle in a jet head fixed at the front end of a casing is caused to flow toward the jet head by rotation of an impeller in the casing. In a small amount sprayer that uses pressurized air to diffuse into a house in the form of smoke, a reducer R including a group of gears G is interposed between the impeller 15 and the prime mover M. An axial flow blower for a small quantity spreader, in which the impeller 15 and the prime mover M are detachably attached to each of the impeller 15 and the prime mover M. (2) The axial flow blower for a small-volume spreader according to claim 1, wherein the reducer R is detachable from the prime mover M at its periphery and from the impeller 15 at its center.