JPS5811178Y2 - Duster No Fun Zairiusouchi - Google Patents

Description

[Detailed description of the invention] This invention is a powder rectifying device for a duster that uses a blower to blow out powder from the spray hole of a spray hose, and that rectifies the rotating air in the hose by the blower to prevent uneven distribution of the powder. This is related to.

Generally, in a duster that uses a blower to blow out powder from the spray hole of a spray hose, rotation occurs in the air at the bend in the blower's discharge pipe, and the powder that is continuously fed into the discharge pipe rotates in a linear manner. and will be sent.

In other words, the powder is sent continuously in a spiral,
For this reason, the powder cannot be sprayed evenly from each spray hole of the spray hose, and the powder is sprayed from the spray hole located at the position of the spiral powder, but not from the other holes. This caused the phenomenon of uneven distribution.

In order to prevent this rotation of the air, there is a conventional flow rectifier that is configured to prevent the rotation of the air by providing a protruding wall in the pipe in parallel with the axial direction and protruding toward the axial center, as shown in Figure 4. However, rotation of the air near the center of the pipe cannot be prevented, and this rotational force reapplies rotational force to the air near the outer periphery within the spraying hose, which is insufficient for even spraying.

This invention prevents the rotation of the air near the center by providing a protruding wall on one inner wall of the pipe that projects in a direction opposite to the direction of rotation of the air, thereby ensuring even distribution. The purpose of the present invention is to provide a powder rectifying device for a duster that can be used as a duster.

Examples will be described below with reference to the drawings.

In FIGS. 1 and 2, 1 is an engine, 3 is a blower driven by the engine 1, 5 is a discharge pipe of the blower 1, and 7 is a blower driven by the engine 1.
9 is a powder tank, and 9 is a communication pipe that communicates the bottom of the powder tank 7 with the discharge pipe 5, and is configured to continuously send the powder while blowing air.

11 is engine 1. Support body for supporting the blower 3 etc., 13
15 is a flexible pipe connected to the discharge pipe 5, and 15 is a spraying hose, which is usually made of a flexible material such as vinyl and has a closed tip, and spraying holes 17, 17, etc. provided on the lower surface along the entire length.
There are many rows of...

Reference numeral 19 denotes a dispersion hose 15 which is connected to the discharge pipe 5 via the flexible pipe 13, and has an inner wall 20 extending parallel to the axial direction and inclined in a direction opposite to the direction of rotation of the air. An appropriate number of protruding walls 21 are provided.

In the above configuration, when dispersing the powder, the blower 3 is rotated by the engine 1 and the powder in the powder tank 7 is continuously fed into the discharge pipe 5 through the communication pipe 9.

The airflow generates rotational movement at the bent part, but inside the rectifier tube 19, the airflow near the outer periphery collides with the protruding wall 21 and is reversed, colliding with the airflow near the center in the opposite direction to the rotational direction, so that the airflow near the center Rotation of nearby air blowers will be blocked.

Therefore, the air is completely rectified and sent into the spraying hose 15, resulting in completely even spraying.

FIG. 3 is an explanatory diagram showing the flow of wind, where arrows represented by solid lines represent the flow of wind flowing into the vicinity of the outer circumference of the rectifier tube 19, and arrows represented by dotted lines represent the flow of wind flowing into the vicinity of the center. show.

As described above, the present invention includes a rectifier tube provided in communication between a spray hose provided with a spray hole and a discharge pipe of a blower, and a rectifier tube that extends inside the rectifier tube in the axial direction and parallel to the inner wall. This powder rectifying device, such as a duster, is equipped with a protruding wall that is inclined and protrudes in the direction opposite to the rotating direction of the airflow, so it can reliably prevent uneven distribution, and has the effect of being able to be manufactured at low cost due to its simple structure. It is.

Note that the term "powder" as used in the present invention is not limited to so-called fine powders, but granular powders have the same effect and belong to the present invention.

Further, the rectifying pipe may not be provided separately, but may be formed integrally with a part of the discharge pipe, spraying hose, etc.

In addition, FIG. 4 shows a conventional rectifier, where 23 is a rectifier tube, 2
5.25... is a protruding wall.

FIG. 5 is an explanatory diagram showing the flow of wind in a conventional projecting wall. The wind flowing into the vicinity of the outer periphery collides with the projecting wall and moves toward the center, colliding with the wind near the center. The rotation of the wind cannot be stopped.

[Brief explanation of drawings]

Figure 1 is a perspective view of a duster equipped with the device of the present invention;
The figure is a perspective view of an embodiment of the present invention, Fig. 3 is an explanatory diagram of the flow of rotating air in an embodiment of the present invention, Fig. 4 is a perspective view of a conventional rectifier, and Fig. 5 is a perspective view of a conventional rectifier. FIG. 3 is an explanatory diagram of the flow of rotating wind. Explanation of symbols representing main parts of the drawing 3: Blower, 5
: Discharge pipe, 15: Spraying hose, 17: Spraying hole, 19: Rectifier pipe, 21: Projecting wall.

Claims (1)

[Scope of utility model registration request] Spraying hose 15 provided with spraying holes 17, 17...
and the discharge pipe 5 of the blower 3.
9, and a protruding wall 21 that extends inside the rectifying pipe 19 in a direction parallel to the axial direction, and protrudes from the inner wall 20 at an angle opposite to the direction of rotation of the air. powder rectifier.