JPH0353732Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention allows the jet head of a small-volume spreader to be easily attached and detached from the dust-proof net on the discharge side of the diffusion blower via a hook attached to the green outer circumference of the cylindrical flange. This invention relates to a device for attaching a jet head to a diffusion blower of a small-volume spreader, which allows inspection, cleaning, and selection of a diffusion blower by freely attaching the device.

[Conventional technology]

Conventionally, as a means for attaching a jet head to the discharge side of a blower, particularly an axial-flow type diffusion fan, for example, as shown in _FIG . Install. () As shown in FIG. 7, the jet head b2 is installed in the cup-shaped recess 3 provided in the center of the stationary blade ₂ . Also,
() As shown in Fig. 8, a method is adopted in which a jet head b ₃ is attached to the upper end of a column 5 that is fixed and stands upright inside the casing 4.

[The problem that the idea attempts to solve]

In the case of the type () described in the prior art section, since the jet head b1 is attached to the electric motor A via the jet head mounting seat ₁ , the installation and separation requires a great deal of effort and time. ) Types like () are limited to a dedicated axial flow head, making it difficult to select a blower that can be adapted to the form of fields, vegetable gardens, greenhouses, etc., and the growing conditions of crops. After removing the nozzle head, it is difficult to use it as a normal blower, and since commercially available blowers cannot be used as is, they have to be manufactured separately, which results in a rise in equipment costs, etc. It was difficult to avoid the shortcomings of

This idea was proposed in view of the problems faced by the conventional technology, and its purpose is to:
A hook-shaped engagement piece is removably attached to the dust-proof net on the discharge side of the diffusion blower, allowing the jet to be easily attached to or detached from the dust-proof net. The purpose of this invention is to provide a device for attaching a jet head to a commercial blower.

[Means to solve the problem]

In order to achieve the above object, the device for attaching the jet head to the dispersion blower of the small volume spreader according to this invention is provided in the small volume spreader in which the jet head is attached to the discharge side of the dispersion fan. The radial recess on the side of the dustproof net of the flange on which the jet head is removably attached to the radial holding body of the dustproof net is removably fitted, and the claw of the L-shaped engagement piece attached to this flange is It is removably attached to an appropriate position on the annular body of the dustproof net.

〔Example〕

This invention will be explained by way of examples with reference to FIGS. 1 to 5.

Stator blade 1 fixed inside a cylindrical casing c
A prime mover M such as an electric motor is press-fitted and fitted into the center of the casing 1, and an impeller 12 is rotatably attached to the rear of the prime mover M (in FIG. 1, the left side is the front and the right side is the rear). Dustproof nets 13 and 14 are stretched inside the front end and rear end of C, respectively, and between the dustproof net 13 and the prime mover M, the impeller 12 and the dustproof net 1
4, desired voids d and g are interposed between them, respectively, to constitute an axial type diffusion blower F. Then, on the discharge side (on the left side in FIG. 1), the claws P at the tips of an appropriate number of L-shaped locking pieces 16 fixed to the outer peripheral edge of the cylindrical flange k with screws 15 are connected to the dust-proof net 13. The flange k can be fixed to the dustproof net 13 by facing the annular body r at a suitable position in a detachable manner, and as shown in FIG. 6)
A radial holding body h of the dustproof net 13 is removably fitted into each of these concavities v to prevent accidental rotation of the flange k with respect to the dustproof net 13. Female screws i are cut into the recesses v at an appropriate number (three in this case) of v, and through holes are bored in each of these female screws i on the dust-proof screen 13 side of the body 17 at the jet head J. By tightening the male screw 18 that can pass through t through the washer w,
Both the jet head J and the flange K are integrally assembled to a diffusion blower F. Further, a closing body 19 is brought into contact with the rear of the nozzle N housed in the jet head J, and a through hole Z formed in the closing body 19 is made to communicate with the through hole U of the nozzle N. Communicated liquid feed pipe 2
An air supply pipe 21 communicating with a space q between the nozzle N and the body 17 covering the nozzle N is connected to a chemical liquid tank and a compressor (none of which are shown).

In the figure, n ₀ is an ejection hole, and 6 and 7 are stationary blades.

[Effect]

In this invention, when the compressed air generated by driving the compressor flows into the nozzle N through the air supply pipe 21 and is ejected from the ejection hole _n0 in a whirlpool shape at high speed and high pressure, Since the tip of the nozzle N is in a vacuum, the liquid in the chemical tank, such as a chemical, is sucked into the through hole u in the nozzle N through the liquid feed pipe 20, mixed with compressed air at the tip of the nozzle N, and atomized into smoke. The object to be sprayed, such as vegetables, fruits, flower petals, etc., is sprayed.At the same time, the prime mover M in the diffusion blower F is also driven together with the compressor or independently, and rotates the impeller 12. A part of the pressurized air (indicated by the arrow) flowing forward from the space d passes through the flange k and then flows into the jet head J, where it further atomizes the atomized chemical and spreads it onto the material to be sprayed. In addition to being dispersible,
This is advantageous in that it is possible to prevent the chemical from adhering to the inner circumferential wall of the jet head J. After use, when inspecting, cleaning or replacing the jet head J, the claw P can be easily removed from the annular body r by loosening the screw 15 and slightly shifting the locking piece 16. (At this time, the recess v is automatically removed from the holder h.) Also, when inspecting or cleaning the nozzle N, by removing the male screw 18 from the through hole t, the jet head J and flange k can be easily removed. Can be separated.

〔effect〕

The claw of the L-shaped locking piece attached to the flange can be freely engaged and detached from the annular body of the dustproof net in the diffusion blower, and the locking piece can be loosened from the flange as necessary to diffuse the flange and jet head. It can be easily removed from the blower for use, and since the jet head and flange are detachably attached, for example, by removing the male screw, the jet head and flange can be easily separated, allowing the operator to use the blower for diffusion. It is extremely easy to attach and detach the blower head, and because the blower head is attached via the blower head mounting seat attached to the prime mover, it is significantly easier to attach and remove the blower head than the conventional method of attaching and removing the blower head, which requires a great deal of effort and time. It can reduce labor and time, and it is also difficult to select a diffusion blower that is applicable to the growing conditions of crops, or commercially available blowers cannot be used.
Compared to conventional blower selection, which requires preparing a separate blower, existing parts and equipment can be used because the desired jet head, flange, and diffusion blower can be easily selected and assembled as needed. This is very convenient for the users, avoids a rise in facility costs, and has practical benefits such as the structure for installing the jet head is simple and only a small number of parts are required.

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional view of an embodiment of this invention when assembled, Fig. 2 is a longitudinal cross-sectional view of the flange, Fig. 3 is a view taken along the - line in Fig. 2, and Fig. 4 is a longitudinal cross-sectional view of the flange. Figure -
5 is a sectional view taken along the -o line in FIG. 4, FIG. 6 is an explanatory diagram of the main part of the jet head mounting means in the conventional type, and FIG. 7 is an explanatory diagram of the main part of another type of the same as above. , FIG. 8 is an explanatory view of the main parts of still another format of the same. F... Diffusion blower, J... Head, k... Flange, P... Claw, h... Holder, r... Annular body,
v... recess, 13... dustproof net.

Claims (1)

[Scope of utility model registration request] In a small-volume spreader in which a jet head is attached to the discharge side of the diffusion blower, the dust-proof net of the flange k has the jet head J removably attached to a radial holder h of the dust-proof net 13 on the discharge side of the diffusion blower F. 13
While the radial recess v on the side can be fitted and removed freely, the L-shaped engager 1 is attached to this flange k.
A jet head attachment device for a diffusion blower of a small amount spreader, in which a claw p of No. 6 is removably exposed to a proper position of an annular body r in the dustproof net 13.