JPH04920Y2 - - Google Patents

Description

[Detailed explanation of the device] (a) Industrial application field This device can be attached to a power spreader, especially a backpack power spreader, when spraying powdered or granular chemicals or fertilizers to fields, vegetable gardens, afforestation areas, etc. This invention relates to a T-type multi-nosed nozzle head for a power spreader that can be operated by a single worker and can spread more uniformly and widely over a wider area than conventional means.

(b) Conventional technology Conventionally, when spraying chemicals or fertilizers to fields, vegetable gardens, afforestation areas, etc., T
In the case of a spraying means using a multi-nosed nozzle, as shown in Fig. 7, an appropriate number of nozzles (in this case, A configuration in which three (3) multi-nozzle jet heads 3, 4, and 5 are connected in a tapered manner is adopted, and a blower (not shown) is operated by a prime mover, such as an engine, carried on the back of the worker 6 to generate pressurized air. This pressurized air is used to spray chemicals or fertilizers 7 onto the area to be sprayed 8 through the bellows pipe 1 and the T-shaped jet pipe 2, but the width b between the left and right nozzles is usually about 5 m. Spreading width W
Generally, the length is about 5.5m. As mentioned above, the spreading width W of the T-shaped multi-nozzle head is determined by the width b between the left and right nozzles, so we cannot expect much improvement in work efficiency in the vast spread area 8.
On the other hand, it was not always possible to make full use of the air blowing capacity of the blower, and it was difficult to avoid the fact that the power was wasted. A spout pipe for a spreader has been proposed in which multi-nozzle jets are connected to the left and right ends of the pipe, respectively, and through holes are bored at the respective ends of these multi-nosed jets. (For example, see Utility Model Publication No. 45-29245)
However, in the case of such a type of spreader, the spreading agent such as a chemical or fertilizer flowing inside the jet pipe is
If this happens, the spray may not be ejected uniformly from the nozzle holes of the multi-nozzle head and the through holes, and may be locally concentrated or stagnate within the nozzle, resulting in so-called uneven distribution. In order to solve this problem, (2) a partition wall was set up inside the jet pipe connected to the middle of the flow path, and the pressurized air sent from the blower was evenly distributed to disperse spray agents such as chemicals or fertilizers; A method has been proposed to prevent uneven spraying. (For example, as an example,
(Refer to Publication No. 11177) However, when spraying in this manner, there is a partition wall inside the jet pipe, so the pressurized air is
There is resistance in the middle of the flow, and as it goes towards the end, the energy of the pressurized wind cannot be fully utilized, so it is difficult to spread the spraying agent uniformly.Therefore, this difficulty has been corrected. In order to achieve this goal, a multi-nosed nozzle was proposed in which (1) a collision plate with an upright structure was set upright at the nozzle of the dispersion pipe, and the spraying agent could be uniformly sprayed using pressurized air from a blower (for example, (Refer to Japanese Utility Model Publication No. 59-42128) However, in the case of this type of multi-nosed nozzle, since the tip of the dispersion tube is blocked, the spraying width of the dispersion agent by the pressurized air sent from the blower is limited to four areas. It is not possible to adjust the pressure appropriately depending on the situation, and therefore, adjustment involves adjusting the strength of the pressurized air and the amount of air blown, but such actions are actually troublesome for the operator, especially during spraying work. Another drawback is that sufficient and satisfactory adjustment cannot be expected.

(c) Means for solving the problem This idea was made by paying attention to the problem mentioned above, and it is a T-shaped jet that is connected to the discharge port of the fan case of the backpack power spreader through a bellows pipe. In a T-shaped multi-nozzle head in which a plurality of multi-nozzle nozzles each having a jet nozzle with a collision plate are sequentially connected to each of the left and right ends of the pipe, a branch that branches to the left and right of the T-shaped nozzle. A rectifying grid is tightly fitted into each passage, and a through hole is bored at the end of the first multi-nozzle head to which multiple multiple nozzle heads are connected, and a perforated grommet or a grommet plug is inserted into this through hole. It is designed to be detachably attached.

An embodiment of this invention will be described below with reference to FIGS. 1 to 6. Fan case (not shown)
A tightening band 12 is attached to the bellows pipe 11 attached to the discharge end of the
The T-shaped jet pipe 13 is connected through the T-shaped jet pipe 13, and an appropriate number (four in this case) with a desired uniform cross-sectional area are connected to the inside of the passage branched to the left and right of the T-shaped jet pipe 13 by the partition P.
While the rectifying grid 14 divided into the space c is tightly fitted, there are jet pipe bands t ₁ on the left and right sides of the T-shaped jet pipe 13, respectively.
At ~t ₄ , multiple (four in this case) multi-mouthed fumaroles N ₁ ,
N ₂ , N ₃ and N ₄ are sequentially connected in a tapered shape, and below each of these multi-nosed jets N ₁ to _{N 4} , as shown in Fig. 4, an appropriate number of jets are installed. Spout ports j are drilled at desired intervals, collision plates a are protruded and fixed inward in the vicinity of these jet ports j, and the bellows pipe 1 is pressed with pressurized air.
The medicine or fertilizer sent from the first side can be sprayed uniformly from the spout j. In _addition , perforated grommets 15 as shown in _FIG . A grommet stopper 16 as shown in Figure 6 is fitted to allow the spreading width to be expanded as required. FIG. 8 is a graph showing the relationship between the amount g and the distance m when granules (KUH813) of the proposed type and the conventional type are sprayed. In this figure, ○・−○・ indicate the present invention, and ○×...○× indicate the respective conventional formats.

(d) Functions and Effects Since this device has the above-mentioned configuration, when it is used, the blower is driven by starting the prime mover (not shown), and the pressurized air generated by this is transmitted through the bellows pipe 1.
1. Multi-mouthed jets on the left and right through T-shaped jet pipes 13
On the other hand, powdered or granular chemicals or fertilizers in a storage tank (not shown) flow into the bellows pipe 11 from the discharge end of the fan case, and the pressurized air blows the multi-mouth jets N ₁ to _{N 4 .} The chemicals or fertilizers are sent to the side of the multi-nozzle N ₁ to _{N 4} and come into contact with each of the collision plates a set inside the multi-nosed nozzles N 1 to N 4 . , seedlings, etc., and is sprayed in a substantially straight line from the multi-nosed jet head N ₄ at the left and right tips, and the perforated grommet 15 at the tip of N ₄ , so the spray width is smaller than that of conventional spraying width (approximately 5.5 m).
As shown in Figure 8, it can be expanded to a wide width (approximately 15 m), which can be expected to improve work efficiency, and the blower's inherent blowing function can be fully utilized.
It is economical for the user because it is possible to use the conventional one, as it is only necessary to make a slight modification to the multi-nosed jet at the tip used in the past.
Moreover, since only one operator is required, there is no risk of an increase in overall costs, and when the spray width does not need to be expanded, the grommet plug 16 can be fitted into the through hole h of the multi-nozzle head _N4 . Furthermore, when adjusting the spreading width, the user can change the spreading width with a simple gesture, such as changing the hole diameter of the perforated grommet 15, which is extremely convenient. A rectifier grid 1 is installed at the discharge end of the mold jet pipe 13.
4, it is possible to easily equalize the amount of ejection from the ejection holes j, and it has various advantages such as uniform growth and development of crops.

[Brief explanation of drawings]

Figure 1 is a partially cutaway vertical cross-sectional view of the proposed product, Figure 2
The figure is a sectional view taken along the - line in Fig. 1, Fig. 3 is an enlarged view taken along the - line in Fig. 2, Fig. 4 is an enlarged sectional view of the part in Fig. 1, and Fig. 5 is an enlarged view of the L part in Fig. 1. Sectional view, No. 6
The figure is an enlarged cross-sectional view of the L part in Figure 1 when the hole is blocked, Figure 7 is an explanatory diagram of the conventional T-type multi-hole nozzle during dispersion, and Figure 8 is the T-type multiple head of the proposed product and the conventional product. It is a model diagram showing the spreading width using the jet head. 11... Bellows tube, 13... T-shaped jet tube, 14...
Rectifier grating, 15... Perforated grommet, 16...
Grommet plug, N ₁ to _{N 4} ...Multi-mouth jet head, a ... Collision plate, c ... Space, h ... Through hole, j ... Spout hole,
p... bulkhead.

Claims (1)

[Scope of utility model registration request] A multi-mouth jet head N _{1 - in which jet ports j with collision plates a are formed at the left and right ends of a T-shaped jet pipe 13 connected to a discharge port of a fan case of a backpack power spreader via a bellows pipe 11} , respectively. In a T-type multi-nozzle jet head in which a plurality of _N4 jets are sequentially connected, rectifier gratings 14 are tightly fitted into branch passages branching to the left and right of the T-type jet pipe 13, and a plurality of multiple A through hole h is bored at the end of the first multi-orifice head _N4 connecting the orifice heads _N1 to _N3 ,
A T-shaped multi-mouth jet head for a power spreader, in which a perforated grommet 15 or a grommet plug 16 is removably attached to the through hole h.