JPH0611853U - Power sprayer - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a power sprayer suitable for spraying a wide variety of chemicals, from a wide range of sprays to spraying chemicals on trees and the like located at a long distance. [Configuration] Fume tube 3 for ejecting pressurized air that conveys a chemical solution
A ring-shaped branch pipe 51 connected to the chemical liquid tank via the hose 23 is attached to the tip end opening portion of 8. The ring-shaped branch pipe 51 has a plurality of nozzles 55 _{1 to} 55 _{n with} adjustable opening degrees.
Are provided at equal intervals in the circumferential direction. A guide tube 40 surrounding the nozzles 55 _{1 to} 55 _n is provided at the tip of the fumarolic pipe 38.
Is installed. Central axis C ₁ of the nozzles 55 _{1 to} 55 _n
˜C _n are parallel to the tube axis C ₀ of the fumarolic tube 38.
A spiral plate 60 that turns the pressurized air into a spiral flow can be fitted and fixed to the tip of the fumarolic pipe 38. [Effect] The opening degree of the nozzles 55 _{1 to} 55 _n and the guide tube 40.
By adjusting the mounting position of the, it is possible to freely adjust the spraying form from the widespread spraying of the chemical liquid to the spraying of the chemical liquid over a long distance.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a power sprayer which can take various spraying forms depending on the situation of fields, trees, fruits, etc.

[0002]

[Prior art]

 A power sprayer used for agricultural work, etc. uses a chemical pump driven by a prime mover such as a small engine to pump up the chemical solution filled in the chemical solution tank and inject it at high pressure from a spray nozzle. The sprayed chemicals are atomized by high-pressure carrier air and sprayed on trees, fruits, vegetables, etc.

In order to increase the reach of the atomized chemical liquid, Japanese Utility Model Publication No. 59-9703 proposes to surround the periphery of the chemical liquid spray nozzle with a tip portion of a blower pipe. The pressurized air ejected from the blower pipe flows out so as to enclose the chemical solution delivered from the chemical solution spray nozzle. Further, the atomization state of the chemical liquid is adjusted by the pressure and flow rate of the pressurized air. As a result, the chemical liquid atomized to a predetermined particle size can be transported to a long distance. The applicant of the present invention also introduces a spraying machine in which a plurality of chemical solution ejection nozzles are faced to the tip end opening of a spray tube in Japanese Utility Model Publication No. 62-29087. The chemical liquid jetted from the chemical liquid jet nozzle is atomized by the pressurized air sent from the spray pipe, and is sprayed as fine droplets.

[0004]

[Problems to be solved by the device]

 The spraying form of the drug solution varies greatly depending on the situation of the field, trees, fruits, etc. For example, for tall trees, it is necessary to spray the chemical solution far, and for vegetables and the like, spraying the chemical solution over a wide area at once improves work efficiency. In this respect, the power sprayer disclosed in Japanese Utility Model Publication No. 59-9703 can be said to be a dedicated machine for trees, which was developed on the premise of spraying chemicals to a long distance. On the other hand, the spraying machine disclosed in Japanese Utility Model Publication No. 62-29087 can be said to be a dedicated machine for spraying a chemical solution as a fine mist on agricultural products that are relatively close to each other. That is, regardless of which sprayer or sprayer, it is not possible to freely obtain a spraying form that changes depending on the situation of the field, trees, fruits, etc., and it lacks versatility.

The present invention has been devised in order to solve such a problem, and the spraying form of the chemical liquid can be freely set, such as spraying the chemical liquid over a wide range of trees to a tree or the like at a long distance. An object is to provide a power sprayer that can be set.

[0006]

[Means for Solving the Problems]

 In order to achieve the object, the power sprayer of the present invention is connected to a blower and blows a pressurized air for conveying a chemical solution, and is attached to the tip opening of the blower tube, and passes through a chemical solution supply pump. A ring-shaped chemical liquid supply pipe connected to the chemical liquid tank; a plurality of nozzles provided in the circumferential direction of the chemical liquid supply pipe; and a design inner cylinder attached to the tip of the blower pipe. The central axis of the nozzle is parallel to the tube axis of the blower tube.

Inside the blower tube, it is preferable to insert and fix a spiral plate that gives a spiral motion to the jetted pressurized air, at an appropriate position in the path from the chemical liquid supply pump to the tip opening of the blower tube. . This power sprayer has a basic equipment configuration consisting of a chemical liquid tank, a chemical liquid supply pump, a blower and a spray pipe. The chemical liquid supply pipe is connected to the chemical liquid tank via the chemical liquid supply pump. The chemical liquid tank and / or the chemical liquid supply pump may be of a type mounted on a carrier or vehicle, a type fixed on the ground, or a backpack type carried by an operator. However, it is preferable that the blower is a backpack type that is transported by an operator in consideration of the pressure loss on the way to the tip opening of the blower pipe.

[0008]

【Example】

 An embodiment in which the present invention is applied to a sprayer of a type carrying a chemical liquid tank on its back will be described. The power sprayer according to the present embodiment includes a backrest-type mount 10 as shown in FIG. The gantry 10 has an upright frame 12 standing upright from the front end of a horizontal bottom frame 11, and an intermediate frame 13 extending parallel to the bottom frame 11 from an intermediate position of the upright frame 12. A backrest 14 is attached to the front side of the standing frame 12, and both ends of a backpack band 15 are attached to the upper and lower portions, respectively.

The chemical liquid tank 20 is mounted on the intermediate frame 13. The discharge port 21 at the bottom of the chemical liquid tank 20 is guided to the nozzle unit 50 via a pipe 22 and a hose 23. A cock 24 is provided at the connecting portion between the pipe 22 and the hose 23, and by adjusting the opening / closing of the cock 24, the supply / stop and the flow rate of the chemical solution sent from the chemical solution tank 20 to the nozzle section 50 by the chemical solution supply pump 25. Control is performed.

A small engine 30 is attached to the bottom frame 11 via a vibration isolator 31 below the chemical liquid tank 20. A fuel tank 32 that supplies fuel to the engine 30 is supported at the rear end of the intermediate frame 13. A blower 33, a speed reducer 34, and a chemical liquid supply pump 25 are arranged in series on the output side of the engine 30. The pressurized air sent from the blower 33 is sent to the nozzle unit 50 via the curved pipe 36, the flexible pipe 37, and the blower pipe 38 connected to the exhaust port of the blower 33.

The vicinity of the tip of the fumarolic pipe 38 is slightly bent as shown in FIG. 2 in order to improve operability. The hose 23 connected to the chemical liquid tank 20 is connected to the ring-shaped branch pipe 51. The ring-shaped branch pipe 51 is provided with mounting seats 52 at appropriate intervals in the circumferential direction as shown in FIG. By screwing a screw 54, which is inserted into a screw insertion hole 53 formed in the mounting seat 52, into the peripheral wall of the distal end of the fumarolic pipe 38, the ring-shaped branch pipe 51 is attached to the outer periphery of the distal end of the fumarolic pipe 38.

The hose 23 penetrates the tapered wall 41 of the guide cylinder 40 and is connected to the ring-shaped branch pipe 51. The guide cylinder 40 is attached to the outer periphery of the tip end portion of the fumarolic pipe 38 by tightening the mounting seat 42 with the band 43. The mounting position of the guide cylinder 40 with respect to the tip of the fumarolic pipe 38 can be freely adjusted in the axial direction of the fumarolic pipe 38. The tip end portion of the guide cylinder 40 is a straight wall 44 having an enlarged diameter.

The ring-shaped branch pipe 51 is provided with a plurality of nozzles 55 ₁ , 55 ₂ , ... 55 _n at equal intervals in the circumferential direction. The central axes C ₁ , C _2, ..., C _n of the individual nozzles 55 ₁ , 55 _2, ... 55 _n are parallel to the tube axis C ₀ at the tip of the fumarolic pipe 38.

As shown in the structure of FIG. 4, the nozzle 55 includes a base portion 55a screwed into the ring-shaped branch pipe 51 or fixed by welding or the like. A chemical liquid passage 55b is bored in the base portion 55a in the central axis direction, and an integral needle valve 55c is provided at the tip of the chemical liquid passage 55b. The chemical liquid L sent from the ring-shaped branch pipe 51 flows to the tip of the nozzle 55 through the liquid passage hole 55d provided between the inner wall of the chemical liquid passage 55b and the needle valve 55c.

An adjusting ring 55e is screwed onto the base 55a. The tip of the adjustment ring 55e contacts the flange 55g provided on the peripheral wall of the orifice ring 55f. The orifice ring 55f is airtightly fitted and inserted into the tip of the base 55a via a packing 55h. The tip of the orifice ring 55f is closed by a front plate 55k having an orifice 55j formed in the center, and the tip of the needle valve 55c faces the orifice 55j.

A nozzle head 55m is screwed onto the outer circumference of the tip of the orifice ring 55f. The nozzle head 55m has a large opening central opening 55n, and a seal plate 55p is sandwiched between the edge of the central opening 55n and the orifice ring 55f. The seal plate 55p also has an orifice 55q having the same diameter as or slightly larger than that of the orifice 55j in the central portion. The seal plate 55p prevents the chemical liquid L from entering between the orifice ring 55f and the nozzle head 55m, and improves the directivity of the chemical liquid L to be ejected by overlapping the orifice 55j and the orifice 55q. .

When the adjusting ring 55e is rotated as shown by the arrow ab, it is pitch-fed to the base 55a along the direction of the arrow cd. As a result, the distance between the tip of the needle valve 55c and the orifice 55j changes.

When the distance from the tip of the needle valve 55c to the orifice 55j is long, the chemical liquid L sent through the hose 23 and the ring-shaped branch pipe 51 is ejected without receiving pressure loss. Therefore, the chemical liquid L ejected from the orifice 55j becomes a focused flow L ₁ without spreading over a wide range as shown in FIG. 5 (a). Since the focused flow L ₁ is sent out with a large injection pressure, it is suitable for flying the chemical liquid L to a long distance.

In the state where the tip of the needle valve 55c is partially inserted into the orifice 55j, the flow resistance when the chemical liquid L passes through the orifice 55j is large, and the chemical liquid L ejected from the orifice 55j is ), The dispersed flow L ₂ spreads over a wide area. The dispersed flow L ₂ has a large ejection angle and is suitable for spraying the chemical liquid L as fine droplets.

The chemical liquid L is ejected from the individual nozzles 55 ₁ , 55 _2, ... 55 _{n in} parallel with the tube axis C _0, and is divided into fine droplets by the pressurized air from the fumarolic pipe 38. Then, the chemical liquid L is carried by the pressurized air sent from the fumarolic pipe 38, and is sprayed without being excessively spread.

In order to enhance the transporting action by the pressurized air, a spiral plate is fitted and fixed to the tip of the fumarolic pipe 38. As the spiral plate 60, for example, a plate material twisted by 90 degrees as shown in FIG. 6 is used. When the pressurized air passes through the fumarolic pipe 38 in which the spiral plate 60 is fitted and fixed at the tip, the flow direction of the pressurized air changes along the curved surface of the spiral plate 60. As a result, the pressurized air injected from the fumarolic pipe 38 has a spiral flow centered on the tube axis of the fumarolic pipe 38. The chemical liquid L is subjected to a twisting action by the spiral pressurized air flow, and the directivity is enhanced.

The spiral pressurized air flow has the action of transporting the drug solution to a distant place, and also has the action of swaying the leaves of the agricultural product to which the drug solution is sprayed. That is, since the liquid medicine flies to the swaying leaves, the liquid medicine efficiently adheres to the back surface.

When the liquid chemical L is flown to a far distance, the collecting point P is located inside the guide tube 40, and the nozzles 55 ₁ , 55 _2, ... 55 _n are connected between the needle valve 55 c and the orifice 55 j. Increase the distance. As a result, the convergent flow L ₁ shown in FIG. 5A is ejected at a high flow rate and is then conveyed by the pressurized air from the fumarolic pipe 38. At this time, the spread of the pressurized air is regulated by the diameter-increasing straight wall 44 of the guide cylinder 40, so that the chemical liquid L 1 is spread over a wide range of agricultural products with high directivity without spreading over a wide area.

When spraying the chemical solution to the agricultural products in the vicinity, the nozzles 55 ₁ , 55 ₂ ... 55 _n are narrowed down to make the chemical solution flow relatively wide. As a result, the chemical solution is sprayed over a wide area at one time, which improves work efficiency.

By adjusting the openings of the nozzles 55 ₁ , 55 _2, ... 55 _n and the position of the guide tube 40 in this manner, the spraying form can be freely changed from spraying the chemical solution over a wide range to spraying the chemical solution over a long distance. It can be adjusted. Therefore, the chemical liquid L is used as a sprayer suitable for chemical spraying under various working conditions regardless of the spraying form. Moreover, since the guide tube 40 prevents the chemical liquid L from flying backward, the chemical liquid L does not adhere to the operator's body, and a safe working condition can be obtained.

In the above example, the guide tube 40 is provided so as to be movable in the tube axis direction of the fumarolic pipe 38. However, the present invention is not limited to this, and for example, the guide tube 40 can be attached at a fixed position of the tip of the fumarolic pipe 38. Also in this case, the guide cylinder 40 suppresses the excessive diffusion of the pressurized air ejected from the fumarolic pipe 38. Instead of the nozzles 55 ₁ , 55 _2, ... 55 _n , it is also possible to use nozzles with a fixed opening. Further, the spiral plate 60 is not at the tip of the blower pipe 38 as shown in the drawing, but from the blower 33 to the tip end opening of the blower pipe 38 as long as the spiral air is given to the compressed air ejected from the blower pipe 38. It may be provided at any position between them.

It is also possible to adopt a type in which the chemical liquid tank and the chemical liquid supply pump are mounted on a vehicle, a transportation vehicle, or the like. In particular, when a large-capacity chemical solution tank is used, it is better to mount it on a vehicle, a carrier, etc. so that the worker does not carry it on his back, which improves the workability of chemical spraying.

FIG. 7 shows an example in which the chemical liquid tank A and the chemical liquid supply pump B are mounted on the vehicle D. In this case, the operator can perform the spraying work while riding on the vehicle D as shown in the figure or descending from the vehicle D. FIG. 8 shows a spraying operation using a small carrier E equipped with a chemical solution tank A and a chemical solution supply pump B 1. In either case, the worker carries the blower F on his back. This is because the distance from the blower F to the opening of the tip of the blower pipe is shortened, and the pressurized air is injected at a sufficient injection pressure without lowering the pressure loss.

In either case of FIG. 7 and FIG. 8, the chemical liquid tank A and / or the chemical liquid supply pump B can be lowered from the vehicle D or the small carrier E to the ground and used as a stationary type. For example, by lowering the chemical liquid supply pump B from the vehicle D or the small carrier E to the ground, the chemical liquid supply pump B can be arranged near the working environment where the vehicle D or the small carrier E cannot enter. When the hose 23 is drawn around for a long time, it may interfere with the work of spraying the chemicals, or the hose 23 itself may become entangled and inconvenient in handling. In this case, it is preferable to incorporate a winding machine G as shown in FIG. 9 between the medicine supply pump B and the nozzle portion 50 and unwind the hose 23 of a required length by operating the handle G ₁ .

[0030]

[Effect of device]

 As described above, in the power sprayer of the present invention, the spray form of the drug solution can be changed in various ways. As a result, it becomes highly versatile that various spraying forms can be adopted depending on the ground of the field, the type of agricultural products, and the like. In addition, since the chemicals ejected from the nozzle do not interfere with each other on the tube axis, they are sprayed with a droplet diameter that is optimal for the work immediately after ejection. Moreover, since the air is blown into a spiral pressurized air flow by the spiral plate, the droplets are entrained in the pressurized air flow and the droplets are conveyed by air. Furthermore, since the drug solution is sprayed on the leaves of the crops that are swaying by the spiral pressurized air flow, the drug can efficiently adhere to the back surface of the leaves of the crops, and the spraying of the drug can be performed with excellent workability. It becomes possible to carry out efficiently.

[Brief description of drawings]

FIG. 1 is a power sprayer according to an embodiment of the present invention.

[Fig. 2] Nozzle part provided at the tip of the fumarolic pipe

FIG. 3 is a ring-shaped branch pipe provided with a plurality of nozzles.

FIG. 4 Internal structure of nozzle

FIG. 5: Difference in injection state depending on nozzle opening

FIG. 6 is a spiral plate inserted into the tip of the fumarolic pipe.

[Fig. 7] Example of mounting a chemical liquid tank and a chemical supply pump on a vehicle

[Fig. 8] Example of mounting a chemical liquid tank and a chemical supply pump on a small carrier

FIG. 9 Winding machine for chemical liquid supply hose

[Explanation of symbols]

38 Fume tube (blower tube) 40 Guide tube 50
Nozzle part 51 Ring-shaped branch pipe (chemical solution supply pipe) 55, 55 _{1 to} 55 _n Nozzle 60: Spiral plate L
Chemical solution C ₀ Tube axis of fumarole C _{1 to} C _n Central axis of nozzle

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location B05B 7/10 6762-4D

Claims (5)

[Scope of utility model registration request] 1. A blower pipe communicating with a blower for ejecting pressurized air for conveying a chemical liquid, and a ring-shaped pipe attached to a tip end opening of the blower pipe and connected to a chemical liquid tank via a chemical liquid supply pump. The liquid medicine supply pipe, a plurality of nozzles provided in the circumferential direction of the liquid medicine supply pipe, and a guide cylinder attached to the tip end portion of the blower pipe, the central axis of the nozzle being a pipe of the blower pipe. A power sprayer characterized by being parallel to the axis. 2. A power sprayer characterized in that a spiral plate is fitted and fixed inside the blower pipe according to claim 1. 3. The power sprayer according to claim 1, wherein the chemical liquid tank and the chemical liquid supply pump are mounted on a carrier vehicle or a vehicle. 4. The power sprayer according to claim 1, wherein the chemical liquid tank and the chemical liquid supply pump are stationary types. 5. The chemical liquid supply pump and the chemical liquid tank according to claim 1 or 2 so that an operator can carry them on his / her back.
A power sprayer that is integrated with the blower.