JPH0425248Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a blower device for a chemical solution spraying vehicle used for spraying chemical solutions in orchards and the like.

BACKGROUND TECHNOLOGY In such a conventional blower device for a chemical spray vehicle, a blower guide plate is generally provided in order to deflect the air discharged from the blower almost at right angles, and the blower guide plate is provided with a blower in its periphery. It has a planar shape, and the air outlet is further equipped with a rectifier plate to ensure directionality to the wind.

Problems that the invention aims to solve In such a conventional configuration, a current plate is required to reliably give directionality to the air discharged from the air outlet, and when the current plate is removed, the air discharged from the blower casing is The airflow discharged from the end will be discharged from the outlet with a relatively large velocity component in the axial direction of the blower, and at the outlet, the chemical solution sprayed from the chemical spray nozzle will be affected by the discharged wind. The chemical liquid then scatters toward the driver's seat at the front of the vehicle, which not only prevents proper chemical spraying performance but also increases the risk of chemical injury to the driver.

It is an object of the present invention to provide a blower for a chemical solution spraying vehicle, which makes it possible to remove the baffle plate from such a conventional blower, and which has a simple and inexpensive structure and provides good air blowing performance.

Means for Solving the Problems According to the present invention, this type of blower device for a chemical spray vehicle has an inclined surface that is inclined toward the blower end of the blower casing at least in the upper peripheral area of the blower guide plate. It is characterized by its configuration.

Effect: With the configuration of the present invention, when the airflow discharged from the casing of the blower passes through the inclined surface of the blower guide plate, the velocity component in the blower axis direction is attenuated, and directionality is reliably imparted. The air is discharged radially outward from the air outlet along with the chemical solution.

Embodiments Next, the present invention will be described based on embodiments shown in the drawings.

This embodiment shows a blower device 1 for dispersing chemical liquid according to the present invention.
As shown in FIG. 1, this chemical spraying vehicle has a vehicle body 2 with front wheels 3 driven by an internal combustion engine (not shown) mounted at the front of the vehicle.
and is supported so as to be able to run by the rear wheels 4,
A driver in the driver's seat 5 operates a steering wheel 6 and the like to control the driving in the same way as in a normal automobile. A chemical tank 7 is located in the center of the vehicle body 2.
The blower device 1 is mounted on the rear of the vehicle body 2. Furthermore, an internal combustion engine 8 for driving the blower is installed in a portion of the vehicle body between the tank 7 and the blower 1 , and the internal combustion engine 8 drives the rotating shaft 10 of the blower 1 via a belt and pulley transmission device 9 . It is designed to rotate at a predetermined speed.

The blower device 1 is an axial blower, and is arranged rearward with respect to the vehicle body 2 so that the axis of its rotating shaft 10 extends in the longitudinal direction of the vehicle body 2. The blower device 1 has a cylindrical blower outer casing 11 that is arranged concentrically with the rotating shaft 10 and fixed to the vehicle body 2, and the outer casing 11 has a circular air intake at the end facing the rear of the vehicle body 2. A mouth 12 is formed.

A boss portion 14 of a blower impeller 13 is fixed to the tip of the rotating shaft 10, and the impeller 13 has a plurality of rotor blades extending radially from the boss portion 14 to near the inner circumferential surface of the outer casing 11. There are 15. The front surface of the boss portion 14 facing the intake port 12 (the rear side of the vehicle body 2) is covered by a spinner 16 to minimize turbulence in the airflow flowing there. An inner casing 17 having approximately the same diameter as the boss portion 14 is disposed coaxially close to the rear surface of the boss portion 14 , and the inner casing 17 has a plurality of stationary blades 1 fixed to the inner circumferential surface of the outer casing 11 .
It is fixedly supported by 8. The axial length of the inner casing 17 is shorter than the axial length of the outer casing 11 , and the inner casing 17 terminates within the interior space of the outer casing 11 . In this way, the vehicle body 2 is placed inside the outer casing 11.
An annular air flow path 19 directed toward the front side of the housing is formed.

A bracket member 20 that stands upright from the vehicle body 2 is fixed to the vehicle body 2 at a position remote from the outer casing 11 toward the leeward side of the blower. The rotary shaft 10 is rotatably supported by a bearing 22 provided.

An air discharge guide plate 23 is attached to the surface of the bracket member 20 on the outer casing 11 side. The air discharge guide plate 23 extends upward from the vehicle body 2 substantially parallel to the air discharge end 24 of the outer casing 11 . A shaft cover 25 is integrally provided at the center of the discharge guide plate 23. As shown in FIG. 2, the shaft cover 25 has a fan-shaped cross section with a widened upper surface.
The rotary shaft 10 is eccentrically arranged so as to pass through the shaft cover 25 at a position close to the fan-shaped latch 26 . The shaft cover 25 fits into the downstream end 28 of the inner casing 17 at the upstream end 27 which has the smallest fan-shaped cross-sectional shape.
The shaft cover 25 has a fan-shaped cross-sectional shape that expands in diameter upward and laterally from an upstream end 27 connected to the internal casing 17 to a downstream end 29 connected to the discharge guide plate 23.
In addition, it is curved and expanded into a morning glory shape so that the fan-shaped opening degree α gradually increases from about 60 degrees at the upstream end 27 to about 120 degrees at the downstream end 29, ideally to obtain a chemical liquid dispersion pattern. ing. The downstream end 29 of the shaft cover 25 connected to the discharge guide plate 23
forms a continuous smooth wall surface.

In this way, a semicircular air outlet 30 that opens upward and laterally from both sides of the vehicle body 2 is formed by the air outlet end 24 of the outer casing 11, the air outlet guide plate 23, and the shaft cover 25.

The discharge air guide plate 23 has a recessed portion 31 extending in a semicircular shape in the circumferential direction close to the outer peripheral end on the upper side and on both left and right sides thereof, and a chemical solution supply pipe 32 is provided in the recessed portion 31 to obstruct the discharge air flow. It can be arranged as desired. The chemical liquid supply pipe 32 has a plurality of chemical liquid spray nozzles 33 connected to each other at predetermined intervals, and each of the chemical liquid spray nozzles 33 extends into the air outlet 30 and is arranged in a semicircular shape.

An inclined surface 34 that is inclined radially outward toward the outer casing 11 is provided on a radially outer portion of the recessed portion 31 of the air discharge guide plate 23 .
It is formed to extend in a semicircular shape around the periphery of the . The airflow flowing near the outer casing 11 in the air flow path 19 has a fairly large axial velocity component at the outlet 30, and therefore the airflow coming out of the outlet 30 is directed toward the front of the vehicle body 2. The air tends to scatter toward the driver's seat 5, but the axial velocity component of the air flow is attenuated by the inclined surface 34 and deflected backward, so it flows near the inner casing 17 and is deflected into a radial flow. The air flows outward in the radial direction together with the air flow generated by the driver's seat 5, and prevents the air from scattering toward the driver's seat 5. Due to the air flow from the blower device 1 deflected in the radial direction in this way, the chemical liquid sprayed from the chemical liquid spray nozzle 33 is
0 is widely dispersed radially outward.

A substrate 35 having the same height as the lower surface of the inner circumferential surface of the external casing 11 is provided below the air outlet 30 . The substrate 35 has front and rear wall portions 36 bent downward.
and 37, and is fixed to the outlet end 24 of the outer casing 11 and the outlet guide plate 23 at the wall portions 36 and 37, respectively. A pair of movable plates 38 (only one of which is shown) extending in the width direction of the vehicle are provided at both ends of the base plate 35. Each movable plate 38 has a U-shaped cross section with front and rear wall portions 39 and 40 bent downward, and elongated holes 41 and 42 are formed at one end of the wall portions 39 and 40, respectively. , the rear wall portion 39 of the movable plate 38 has a bolt 44 with a shaft support passing through a hole 43 and an elongated hole 41 formed in the air discharge end 24 of the external casing 11 and the rear wall portion 36 of the base plate 35, and a nut screwed thereto. 45 to be slidably attached to the inner surface of the rear wall portion 36 of the base plate 35. On the other hand, the front wall portion 40 of the movable plate 38 has a square root round head bolt 47 passing through a hole 46 and an elongated hole 42 formed in the front wall portion 37 of the air discharge guide plate 23 and the base plate 35, and a knob nut screwed therein. 48
is clamped against the front wall portion 37 of the base plate 35 by. With this configuration, the operator can easily adjust the angular position of the movable plate 38 by loosening only the knob nut 48 and then pivoting the movable plate 38 up and down by holding the free end of the movable plate 38. Since the shape of the wind discharge in the lateral direction can be set according to the topography of the orchard and the type of trees, the spray pattern of the chemical solution can be changed as appropriate.

Effects of the invention With the configuration of the present invention explained above, the chemical liquid can be reliably deflected and scattered from the air outlet to the upper and lateral radial directions of the vehicle body, even without providing a baffle plate, thereby achieving effective chemical liquid dispersion. In addition, it is possible to effectively prevent the chemical solution from falling on the driver.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of the essential parts of a chemical solution spraying vehicle equipped with an air blower according to an embodiment of the present invention, and Fig.
3 is an enlarged sectional view of the air outlet shown in the blower shown in FIG. 1, FIG. 4 is an enlarged view of the movable plate of the blower shown in FIG. 1, and FIG. FIG. 5 is a side view of the portion shown in FIG. 4. DESCRIPTION OF SYMBOLS 1... Air blower, 2... Vehicle body, 11... External casing, 23... Air discharge guide plate, 24... Air discharge end, 30... Air discharge port, 34... Inclined surface.

Claims (1)

[Scope of utility model registration request] A blower device for a chemical spraying vehicle, wherein a blower guide plate is provided opposite the blower end of an external casing of a blower disposed in a part of the vehicle body, and a blower opening is opened upward and to both sides of the vehicle body. A blower device for a chemical solution spraying vehicle, characterized in that an inclined surface inclined toward a blowing end of the casing is formed on at least an upper peripheral portion of the blowing air guide plate.