JPH0641654Y2 - Backpack power sprayer - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a backpack power sprayer for spraying a liquid such as a medicinal liquid onto an agricultural crop or the like, and more specifically, it can prevent the reduction of the medicinal effect of the liquid. The present invention relates to a backpack power sprayer that can be used.

[Conventional technology]

The conventional backpack power sprayer only has a function of spraying the drug solution from the nozzle, and does not have a function of preventing reduction of the drug effect of the sprayed drug solution.

[Problems to be solved by the device]

The spraying of the medicinal solution onto the crops by the backpack power sprayer is generally performed in the early morning or in the evening when the wind is low, and in the early morning, dew is often attached to the crops. Even if the chemical solution is sprayed on the agricultural products to which the dew is adhered, the sprayed chemical solution may be diluted by the dew or may be discharged from the agricultural product together with the dew, thereby reducing the control effect.

It is difficult for the conventional backpack power sprayer to improve the control effect of the chemical liquid by dealing with the dew that adheres to the agricultural products.

An object of the present invention is to provide a backpack-powered sprayer equipped with a function of preventing a reduction in the effect of a spray liquid due to dew attached to a spray target.

[Means for Solving the Problems]

The invention will be described using the reference numerals of the drawings corresponding to the embodiments.

The backpack power sprayer (10), which is the premise of this invention, is a pump (26) driven by an engine (20) to pump liquid.
And a nozzle (82) for ejecting the liquid pumped from the pump (26) toward the spray target. Then, the backpack power sprayer (10) of the present invention sends air pressure sending means (24) for sending heated air heated by the engine (20) and heating air sent by pressure from the air sending means (24). And a heated air discharge port (72) for spraying on the object to be sprayed.

[Action]

Prior to the work of spraying the liquid from the nozzle (82), the work of removing the dew adhered to the spray target is performed. In this elimination work, the heated air heated by the engine (20) is sent to the heated air discharge port (72) by the air pressure feeding means (24) and blown onto the heated air from the heated air discharge port (72). The object to be sprayed is dewed and dried by the heated air from the heated air discharge port (72). In the liquid spraying work after the dew removal work is completed,
It is pumped by the pump (26), sent to the nozzle (82), and ejected from the nozzle (82) toward the spraying target.

〔Example〕

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

FIG. 1 is a configuration diagram of a main part of the backpack power sprayer 10. The resin structure 12 is manufactured by blow molding of a resin, and an upper chemical solution tank section 14 for storing a chemical solution and a lower pedestal section 16 are provided.
And are integrally formed. The mounting space 18 is formed between the chemical liquid tank portion 14 and the gantry portion 16, and has a backpack power sprayer.
It is open to the rear and left and right of 10. Engine 20
It is arranged in the mounting space 18 and is fixed to the upper surface of the pedestal portion 16 via a plurality of anti-vibration rubbers 22 at the bottom. The blower 24 is on the front side of the engine 20, and the regeneration pump 26 is the blower 24.
Are fixed to the front side of each. The suction hose 28 connects the lower portion of the chemical liquid tank unit 14 to the suction port of the regeneration pump 26, and the residual liquid hose 30 connects the discharge port of the regeneration pump 26 and the lower portion of the chemical liquid tank unit 14. The discharge hose 32 is connected to the discharge port of the regeneration pump 26 together with the residual liquid hose 30. The duct member 34 has a predetermined flexibility, and the discharge port 60 of the blower 24.
One end is connected to (Fig. 3). The connection pipe 36 is connected to the discharge pipe 38 at the tip side, and the on-off valve 40 is connected to the pipe line member 34 and the connection pipe.
The opening / closing valve 42 is arranged at a connecting portion between the discharge hose 32 and the connecting pipe 36.

FIG. 3 is a diagram showing the internal structure of the blower 24 and the regeneration pump 26. The housing 44 of the blower 24 is joined to the front side of the engine 20 with a bolt 46, and the casing of the regenerative pump 26.
48 is joined to the front surface side of the housing 44 by a round machine screw 50. The output shaft 52 of the engine 20 penetrates the housing 44 and reaches the inside of the casing 48 at the tip. Feather
54 is housed in the housing 44, fixed in the axial direction of the output shaft 52 by a retaining ring 56, and rotates integrally with the output shaft 52. Due to the rotation of the blades 54, the air on the rear surface side of the engine 20 flows along the surface of the engine 20 and is introduced into the intake port 58 of the blower 24 on the front surface side of the engine 20, and from the discharge port 60 via the blades 54. It is delivered to the conduit member 34. As the air passes over the surface of the engine 20, it cools the engine 20 and is heated by the engine 20. Impeller 62,
It is housed in the casing 48, is fixed in the axial direction by the retaining ring 64, rotates integrally with the output shaft 52, and along with the rotation, sucks the chemical liquid in the chemical liquid tank portion 14 from the suction port of the regeneration pump 26, It is discharged from the discharge port of the regeneration pump 26.

FIG. 2 is a detailed internal structure diagram of the connection pipe 36 and the discharge pipe 38. The conduit member 34 is fitted on the outer periphery of the end portion of the connecting pipe 36 at the tip end side, and is fixed to the connecting pipe 36 by tightening a stopper 66. The discharge port 68 opens in a direction perpendicular to the extending direction of the connecting pipe 36 and the discharge pipe 38, and communicates with the inside of the connecting pipe 36.
The discharge pipe 38 is fitted on the outer circumference of the end of the connection pipe 36 from the side opposite to the conduit member 34 at the base end side, is fixed to the connection pipe 36 by tightening the stopper 70, and the heated air discharge port is provided at the tip end side. Has 72. The elbow 74 is housed substantially inside the connection pipe 36, a part thereof is projected to the outside of the connection pipe 36, and is fixed to the connection pipe 36 by a nut 76 on the outside of the connection pipe 36. Packing
78 holds a seal at the joint between the connecting pipe 36 and the elbow 74. The discharge hose 32 is screwed onto the protruding end of the elbow 74 from the connecting pipe 36, and the packing 80 holds the seal at the joint between the discharge hose 32 and the elbow 74. The nozzle 82 is coaxially arranged in the discharge pipe 38 with respect to the discharge pipe 38, and is screwed to the tip of the elbow 74 at the base end side, and the tip is located substantially at the heated air discharge port 72. The packing 84 holds the seal at the joint between the elbow 74 and the nozzle 82.

The operation of the embodiment will be described.

Prior to the spraying of the chemical liquid from the nozzle 82, the work of removing the dew adhered to the agricultural products to be sprayed is performed. The engine 20 is kept in an operating state during the dew removal work and the chemical spraying work, and radiates heat from the surface.
Further, the blower 24 and the regeneration pump 26 are also maintained in the operating state.

In the work of removing dew from agricultural products, the on-off valves 40 and 42 are opened and closed, respectively, the air from the blower 24 is guided to the discharge pipe 38, and the chemical liquid from the discharge port of the regeneration pump 26 is discharged to the nozzle 82. It is returned to the chemical liquid tank portion 14 via the residual liquid hose 30 without being sent. By driving the blower 24, the air on the rear surface side of the engine 20 flows along the surface of the engine 20 and cools the engine 20 at the same time.
The heated air heated by 20 is guided to the suction port 58 of the blower 24. The heated air also has blades
54, the discharge port 60 of the blower 24, the conduit member 34, and the connection pipe 36 to reach the discharge pipe 38, and the heated air discharge port 72 of the discharge pipe 38 blows the agricultural products. Dew is blown off and the agricultural product is dried by the heated air from the heated air outlet 72.

In the spraying work of the chemical liquid after the dew removal work is completed, the open / close valves 40 and 42 are closed and opened, respectively, and the heated air from the blower 24 is not guided to the discharge pipe 38 but is discharged from the connection pipe 36. The chemical liquid discharged from the outlet 68 to the outside and discharged from the discharge port of the regeneration pump 26 is pressure-fed to the nozzle 82 via the discharge hose 32 and the elbow 74. In this way, the chemical liquid is ejected from the nozzle 82 toward the agricultural products.

In the illustrated embodiment, the blower 24 is arranged on the downstream side of the engine 20 with respect to the flow of air, but is arranged on the upstream side of the engine 20 so that the heated air sent from the engine 20 is supplied to the duct member 34. May be sent to

In the illustrated embodiment, the nozzle 82 is arranged inside the heated air discharge port 72, but it is also possible to arrange the nozzle 82 outside the heated air discharge port 72 in parallel.

In the illustrated embodiment, the blower 24 is driven by the engine 20, but may be driven by a driving means such as a motor other than the engine 20.

In the illustrated embodiment, the operation of the on-off valve 40 controls the discharge of the heated air from the heated air discharge port 72, but the operation of the blower 24 is stopped by an electromagnetic clutch or the like to heat the heated air discharge port 72. It is also possible to stop the discharge of air.

In the illustrated embodiment, the blower 24 sends the heated air under pressure, but a compressor or pump may be used instead of the blower 24.

[Effect of device]

In this invention, the heating air heated by the engine is pressure-fed to the heating air discharge port by the air pressure feeding means, and is blown from the heating air discharge port to the spraying target to blow off the dew from the spraying target and dry the spraying target. . Therefore, the liquid from the nozzle is sprayed on the spray target from which dew is removed, and the medicinal effect of the liquid can be enhanced.

In this invention, since the engine pre-equipped to drive the pump in the backpack power sprayer is used as the heat source for generating the heated air, it is possible to omit the addition of the heat source and simplify the structure. it can.

[Brief description of drawings]

The drawings are related to an embodiment of the present invention. FIG. 1 is a configuration diagram of main parts of a backpack power sprayer, FIG. 2 is a detailed internal structure diagram of a connecting pipe and a discharge pipe, and FIG. 3 is an inside of a blower and a regenerative pump. It is a figure which shows a structure. 10 …… backpack power sprayer, 20 …… engine, 24 …… blower (pneumatic feeding means), 26 …… regeneration pump (pump), 72…
… Heating air outlet, 82 …… Nozzle.

Claims (1)

[Scope of utility model registration request] 1. A pump (26) driven by an engine (20) to pump a liquid, and a nozzle (82) for jetting the liquid pumped from the pump (26) toward a spray target. In the backpack power sprayer (10) having,
An air pressure feeding means (24) for pressure feeding the heating air heated by the engine (20), and a heating air discharge port (72) for blowing the heating air pressure fed from the air pressure feeding means (24) to the spraying target. A backpack power sprayer characterized by comprising: