JPH0454844Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a spray head for a spraying agent that can suppress damage to the spraying agent caused by collision of the spraying agent with a collision member.

[Conventional technology]

Referring to FIG. 3, a conventional collision plate for a spray head will be described. FIG. 3 is an overall schematic diagram of a backpack-powered spreader equipped with a spray head for spraying agent, and the backpack-powered spreader 10 is equipped with a blower 12 at the bottom.
The blower 12 includes a fan case 14 made of resin, an impeller 16 disposed inside the fan case 14 and driven by an engine (not shown), and a scroll-shaped impeller 16 formed outside the impeller 16 in the radial direction. It has a ventilation passage 18. bent pipe 2
0 is rotatably coupled to the fan case 14 so as to communicate with the downstream end of the ventilation passage 18, and the discharge port 2
It has 2. The storage tank 24 is placed and fixed on the upper part of the fan case 14, and contains powdered and granular spraying agents 26. The damper valve 28 is
It is disposed at the opening at the bottom of the storage tank 24 so as to be movable in the vertical direction by manual operation, and adjusts the amount of the spray agent 26 falling at the opening. The pressurizing passage 30 is formed in the fan case 14 , branches from the middle of the ventilation passage 18 , and reaches an opening at the bottom of the storage tank 24 . The pressurizing pipe 32 extends vertically and supplies the pressurized air in the ventilation passage 18 to the spraying agent 2.
6 into the space in the storage tank 24 above. The discharge pipe 34 is disposed within the fan case 14 , communicates with an opening at the bottom of the storage tank 24 at its upper end, opens near the bent pipe 20 at its lower end, and guides the spraying agent 26 toward the bent pipe 20 . On the downstream side of the bent pipe 20, a flexible pipe 36, a joint multi-mouth jet head 38, and a sink multi-port jet head 40 are connected in order. The spout 42 is formed at the tip of the multi-sink jet 40 so as to open in the axial direction of the multi-sink jet 40, and is arranged in a line at appropriate intervals on the lower surface side of the multi-sink jet 38 and the multi-sink jet 40. It is formed. The collision plate 44 made of a rigid material has a joint multi-nozzle nozzle attached to each of the nozzles 42 except for the two nozzles 42 at the tip of the multi-nozzle nozzle 40 so as to protrude inside the multiple nozzle 38 and the multiple nozzle 40. 38 and the sinking multi-hole nozzle 40 from the outside surface side, and cover the upper, downstream, and widthwise sides of each nozzle 42 within the joint multiple-mouth nozzle 38 and the sinking multi-nozzle nozzle 40.

Pressurized air is formed in the air passage 18 by the rotation of the impeller 16 of the blower 12, and the spraying agent 26 in the storage tank 24 is sent to the joint multi-head nozzle 38 along with the pressurized air. Inside the multi-nozzle jet head 38, the spraying agent 2 is sent to a range close to the lower surface side of the multi-nozzle jet head 38.
6 collides with the collision plate 44 , is deflected by the collision plate 44 toward the nozzle 42 , and is ejected from the nozzle 42 to the outside of the multi-node nozzle 38 .

[The problem that the idea aims to solve]

Fertilizer is sometimes sprayed as a spraying agent26, but in recent years, due to demands such as rationalization of agricultural work, fertilizer spraying agents have been sprayed in water or wet soil so that the effect of one fertilizer application lasts for a long time. A coating layer is applied to the surface to adjust the dissolution rate. However, with a spray head like the one shown in Figure 3,
When the fertilizer with a coating layer collides with the collision plate 44, damage such as cracks occurs to the coating layer of the fertilizer with a coating layer, the ability to retain the fertilizer disappears or decreases, and the effect of the fertilizer with a coating layer is reduced. It will drop.

Japanese Utility Model Publication No. 49-2891 discloses a spray head for spraying agent in which a sponge material is attached to the collision plate in order to suppress damage to the spraying agent. However, in such a spray head, if a sponge material is attached to the collision surface side of the collision plate, the film thickness required to exert the damage prevention effect of the fertilizer with a coating layer will be thicker, and the thickness of the coating layer will increase. The gap with the sponge material becomes smaller, the actual collision area of the sponge material decreases, the amount of spraying agent is reduced, and the direction of reflection of the spraying agent by the collision member becomes constant, making the spraying agent uneven. .

The purpose of this invention is to provide a spray head that can prevent damage to the spray agent while ensuring uniform dispersion of the spray agent.

[Means to solve the problem]

According to the spray head of this invention, a plurality of nozzles are provided at appropriate intervals in the longitudinal direction, and the spray agent sent along with the pressure air is made to collide with the collision member and directed toward the nozzle, and the spray agent is dispersed from the nozzle. do. A forest of elastic needle-like protrusions stands on the collision surface side of the collision member.

[Effect]

The spraying agent is carried along by the pressure wind, travels through the spraying agent nozzle, and collides with the forest-like elastic needle-like protrusions of the collision member. The elastic needle-like protrusions flutter elastically due to the collision of the spraying agent, which reduces the impact force caused by the collision with the collision member, directs the spraying agent toward the nozzle, and jets it out from the nozzle. .
In addition, due to the collision with the dispersing agent, the next dispersing agent collides with the fluttering elastic needle-like protrusions, so the dispersing agent collides with the elastic needle-like protrusions at various angles and is dispersed from the nozzle in various directions. Ru.

〔Example〕

This invention will be described below with reference to embodiments shown in the drawings.

1 and 2 are cross-sectional views showing the structure of the collision member 48, respectively.

In FIG. 1 or 2, a jet head 46 consisting of a continuous multi-port jet 38 or a sink multi-port jet 40 (FIG. 3)
is provided with nozzles 42 at appropriate intervals in the longitudinal direction, and a collision member 4 is provided in the vicinity of each nozzle 42 within the nozzle head 46.
8 is provided. The collision member 48 is connected to the nozzle 42
A rigid inclined plate 50 (rigid body) protrudes from the downstream edge of the nozzle head 46 in the radial direction and toward the upstream direction obliquely with respect to the cross section of the nozzle 42; The elastic member 52 is fixed to the inclined plate 50 and receives the dispersing agent 26. The elastic member 52 further includes a plurality of locking protrusions 54 that are press-fitted into the insertion holes 51 of the rigid inclined plate 50 and are locked to the rigid inclined plate 50, and these locking protrusions 54 are attached to a surface on the rigid inclined plate 50 side. an elastic substrate portion 56 (elastic surface portion) formed on the rigid inclined plate 50 and an elastic substrate portion 5 on the opposite side of the locking protrusion 54;
It has elastic needle-like protrusions 58 integrally formed in a forest shape on the surface of 6. In addition, A is spraying agent 2
6 shows the direction of travel.

In FIG. 1, the length of the elastic member 52 is equal to the length of the rigid inclined plate 50, and the elastic base portion 56 and the elastic needle-like projections 58 do not protrude outside the jet head 46, but in FIG. The length of the elastic member 52 is longer than the length of the rigid inclined plate 50, and the elastic member 52 extends to the outside of the jet head 46 and projects from the jet port 42 to the outside of the jet head 46. Among the elastic needle-like protrusions 58, those located outside the jet head 46 are not directly collided with the spraying agent 26, but they flutter due to the influence of the elastic needle-like projections 58 that flutter due to the collision with the spraying agent 26, and the spray head 4
Appropriate elasticity is imparted to the elastic needle-like protrusion 58 in the 6.

In FIGS. 1 and 2, the elastic member 52 is detachably fixed to the rigid inclined plate 50 by the locking protrusion 54, but the elastic substrate portion 56 is fixed to the rigid inclined plate 50 with adhesive or the like, and the locking protrusion 54 can be omitted.

The spraying agent 26 is carried by the pressure wind to the jet head 4.
6 and collides with a forest-shaped elastic needle-like projection 58 of the collision member 48. The elastic needle-like protrusion 58 flutters elastically due to the collision of the dispersing agent 26, thereby the impact force caused by the collision with the collision member 48 is alleviated, and the direction of the dispersing agent 26 is directed toward the nozzle 42.
The water is ejected from the spout 42 to the outside. In addition, spraying agent 26
The next dispersing agent 26 further collides with the elastic needle-like protrusion 58 that flutters due to the collision with the dispersing agent 26.
collides with the elastic needle-like protrusion 58 at various angles and is dispersed from the nozzle 42 in various directions.

[Effect of idea]

As described above, according to this invention, the collision member that directs the spray agent traveling in the spray nozzle head by pressure wind toward the nozzle and ejects it from the nozzle has a forest-like elastic needle-like projection on the collision surface. Have it on the side. As a result, the elastic acicular protrusions flutter appropriately as the spray agent collides to cushion the impact, thereby suppressing damage to the spray agent.

Each elastic needle-like projection receives the dispersing agent from the side and buffers the impact force, so even if the height of the elastic needle-like projection is slightly higher, the collision member can direct the dispersing agent toward the nozzle. The amount of spraying agent that can be sprayed can be prevented from decreasing, and a predetermined amount of spraying agent can be obtained while ensuring the buffering force necessary to prevent damage to the spraying agent.

In addition, the spray agent is generally directed toward the nozzle due to the collision with the collision member, but due to the collision with the spray agent,
Since the dispersing agent further collides with the fluttering elastic needle-like protrusions, the dispersing agent as a whole collides with the elastic needle-like protrusions at various angles and is ejected from the nozzle at various angles, so that the dispersion becomes uniform.

[Brief explanation of the drawing]

FIGS. 1 and 2 are cross-sectional views showing the structure of the collision member according to this invention, and FIG. 3 is an overall view of a conventional backpack-powered spreader equipped with a spray head. 26... Dispersing agent, 42... Nozzle, 46... Fountain head (spray head for dispersing agent), 48... Collision member, 58... Elastic acicular projection.

Claims (1)

[Claims for Utility Model Registration] (1) A plurality of nozzles 42 are provided at appropriate intervals in the longitudinal direction, and the dispersing agent sent along with the pressure air collides with the collision member 48 and is directed toward the nozzles 42. A spray head 46 for spraying a spray agent that sprays a spray agent from a spray agent 42 is characterized in that elastic needle-like projections 58 are arranged in a row on the collision surface side of the collision member 48. (2) The collision member 48 includes a rigid body 50 that is fixed near the downstream edge of the nozzle 42 on the inner wall of the spray nozzle head 46 and projects diagonally inward, and an insertion hole 51 of the rigid body 50. Practical use characterized in that it has an elastic surface portion 56 into which the locking projection 54 is press-fitted and fixed to the rigid body 50, and the elastic needle-like projection 58 formed integrally with the elastic surface portion 56. A jet spray head for a dispersing agent as set forth in claim 1 of the patent registration claim. (3) The collision member 48 includes a rigid body 50 that is fixed near the downstream edge of the nozzle 42 on the inner wall of the spray head 46 and projects diagonally inward, and an elastic member that is fixed to the rigid body 50. The spray head for spraying agent according to claim 1, characterized in that it has a surface portion 56 and the elastic needle-like projection 58 that is integrally formed with the elastic surface portion 56.