JP3153397U - Drug sprayer - Google Patents

Abstract

Disclosed is a sprayer that can efficiently spray a chemical solution or the like into a film that covers straw in multi-cover cultivation of agricultural products while reducing the physical burden on the worker. A cane-shaped injection tube, a grip tube provided in a T shape at the upper end of the injection tube, a cock provided in the grip tube, and a nozzle having a protruding end connected to the lower end of the injection tube, The nozzle outlet is defined by a curved surface that deflects with respect to the axial direction of the liquid supply path, and the operating lever that controls the opening and closing of the liquid supply path in the cock can be opened and closed from the outside with the thumb of the hand holding the grip tube. At a certain position, projecting on the grip tube, penetrating the nozzle into the coating film, supplying chemical liquid etc. to the liquid feed passage communicating the cock, jet pipe and nozzle, operating the operation lever, etc. Was sprayed under the film. [Selection] Figure 1

Description

  The present invention is a multi-cover cultivation in which the soil surface is cultivated by covering the soil surface with a transparent coating material (multi-film: hereinafter referred to as a film). It relates to a sprayer for spraying or watering chemicals and / or fertilizers for control.

  Transparent or colored films are used to raise the soil temperature during crop cultivation, but when weeds and pests are controlled on the soil covered with film, the film hems (between the furrows) It is necessary to lift the side), but it takes time and work on the middle waist is heavy labor.

As a chemical solution injector for film-coated soil, a nozzle connected to the chemical solution supply path is provided at the tip of the cane-shaped support shaft, the upper end of the cane is held, the nozzle is pierced into the soil, and the operation There is known one in which a chemical liquid is injected into a soil from a nozzle by operating a pump.

JP-A-2005-218443

However, the known device is for injecting a drug into the soil and has a problem that the drug cannot be sprayed on the soil surface.

In order to solve the above problems, the present invention allows an operator to spray water, fertilizers, soil treatment agents, fungicides, insecticides, herbicides, etc. on the soil surface covered with a film. It is a spreader that can be efficiently performed, and includes a nozzle portion, a jet tube portion, and a cock portion, and is connected to a human power such as a chemical solution or a power supply machine.

The nozzle has a conical or pyramidal shape at the tip, facilitating piercing through the film. The front end portion of the fluid passage of the nozzle shaft center is opened laterally on the peripheral surface of the nozzle cylindrical portion with the inner surface deflected with respect to the shaft center or curved in a right angle direction. Therefore, the pressure liquid sprayed from the liquid passage is changed in direction by the curved surface and is sprayed from the nozzle in a flat fan shape. If a constriction with a small outer diameter is provided at the connection between the nozzle upper end and the jet tube, when the soil surface and the film are in close contact, the film will be squeezed when the nozzle is moved in the direction of pulling out the pierced film. The film can be lifted by being caught on the surface and a gap is created between the soil and the film, so that a wider angle of liquid can be sprayed. When a plurality of nozzles are provided by inserting a branch fitting in the middle of the jet tube, the spraying range or / and direction of the liquid from the nozzle can be changed.

The tube is a cane-shaped pipe with a length suitable for handling with one hand in an upright position, and a grip composed of a tube perpendicular to the tube or having an appropriate inclination angle is attached to the upper end of the tube. And a cock part is provided in the inside. The cock part connects the supply source of the liquid medicine and the liquid supply path of the jet tube via a control valve. A lever that opens and closes this valve protrudes from the end of the grip pipe, and the operator holds the grip. The lever can be operated with the thumb of the gripped hand.

The amount of spraying is adjusted in advance by adjusting the pressure of the medicine supplied from the supply source or by operating time of the opening / closing lever.

According to this device, without removing the film, a nozzle is inserted between the film and the soil to form a space between the soil surface and the film. Work such as spraying can be done with one hand operation while standing. If the film is pulled up by the “necking” of the nozzle, the space between the soil surface and the film is widened, and a wider range of spraying is possible. Sprinkling can be performed horizontally in a fan shape, and if a plurality of nozzles are provided, the direction of each injection port can be adjusted and changed over a wide range, and by limiting the spraying direction, It is also possible to limit or avoid the spraying of medicines on specific crops.

(A) is a front view of the spreader concerning one example of the present invention. (B) is a plan view schematically showing the direction of liquid ejected from the ejection port of each nozzle. FIG. 2 is an enlarged perspective view of a lower portion of a jet tube and a nozzle portion of the spreader of FIG. 1. It is an expanded longitudinal cross-sectional view of the grip part of the upper part of the injection tube of the spreader of FIG. (A), (B), (C) is a perspective view which shows the usage example from which the spreader of FIG. 1 differs, respectively.

Hereinafter, embodiments of the present invention will be described in detail.

In the figure, reference numeral 1 denotes a cane-shaped injection tube, which is preferably a pipe having a length and a thickness suitable for handling an operator while standing. The material and cross-sectional shape of the pipe are not limited. Reference numeral 2 denotes a cross fitting provided in the middle of the pipe 1 to branch the pipe 1 into three branches. The branch may be bifurcated. 3 is a nozzle mounting tube provided at the tip (lower end) of each branch pipe via a mounting screw 4, 5 is a nozzle screwed to the tip (lower end) of each mounting tube 3, and its lower end 51 has a conical shape ( A polygonal pyramid may be used), and a constricted portion 6 is formed by providing a small diameter portion in the connecting screw portion 52 to the attachment tube 3 at the upper end. Reference numeral 7 denotes a lateral injection port of the nozzle, which is deflected (laterally) with respect to the axial direction of the liquid supply path 8. Therefore, the injection port 7 is defined by a curved surface 9 that extends at an end of the liquid supply path 8 diagonally or at a right angle to the axis. With this configuration, the liquid that has been pumped through the liquid feed path 8 is bent against the curved surface 9, spreads horizontally along the surface, obliquely upward or downward, and sprayed from the injection port 7. The liquid L to be ejected is schematically shown by a chain line in FIG. The fan-shaped spread angle θ of the spray liquid is set by the curvature R of the curved surface 9. Furthermore, the angle θ can also be changed by adjusting the pressure of the liquid in the liquid feeding path 8. By changing the direction of the injection port 7 of each nozzle by the mounting screw 4, the spraying direction of the injection liquid can be changed. In FIG. 1B, the injection direction of the injection liquid L is indicated by a radial line.

10 is a tubular grip attached to the other end (upper end) of the pipe 1 in a T-shape, 11 is a cock fixedly attached to the grip 10 with a mounting screw 12, 13 is a bent liquid feed path in the cock 10, and 14 is A hollow gland connecting the chemical solution hose H to the bent liquid supply path 13 of the cock 11, 15 connects the grip 10 to the upper end of the pipe 1 and connects the bent liquid supply path 13 to the liquid supply path 8 of the pipe 1. A mounting screw 16 is a valve seat disposed in a bent portion of the bent liquid feeding path 13 and is fixed at a predetermined position by screwing an inner screw of the cock 11 and an outer screw of the gland 14. Reference numeral 17 denotes a valve body that contacts and separates from the valve seat 16, and 18 is a valve rod integrated with the valve body 17, and always protrudes from the cock 11 in the grip 10 on the opposite side of the gland 14. Reference numeral 19 denotes a coil spring that normally presses the valve element 17 against the valve seat 16 to close the bent liquid supply path 13, 20 denotes an opening / closing operation lever of the valve element 17, and 21 denotes a fulcrum for pivotally attaching the lever 20 to the grip 10. The lever 10 has its one end (inner end) in contact with the constantly projecting end of the valve stem 18 and the other end of the lever 20 is always located outside the tip of the grip 10. Attached to.

In the illustrated example, the grip 10 is attached to the jet tube 1 so as to be arranged in substantially the same plane as the placement plane of the jet tube 1 and the three nozzles 5, but the grip 10 is attached to the jet tubes 1 and 3. You may attach with a predetermined angle with respect to the arrangement plane of the nozzle 5 so that operation may be easy.

In use, the operator puts his thumb on the thumb rest 22 of the lever 20, holds the grip 10 with one hand, pierces the film with the nozzle 3 on the heel, and places the nozzle injection port 7 on the lower side of the film. The 20 thumb pads 22 are pressed to spray the liquid.

FIG. 4 shows an example of work using the device. Fig. A is an example in which a soil treatment agent, a herbicide, and an insecticidal fungicide are sprayed on the film in a field where the film F has been applied and the crop P has been planted. While walking between the ridges U, insert the nozzles into the film at regular intervals, and operate the levers to spray from the center of the ridge downward on one side. Do the same for the other side. The liquid to be spread is indicated by a line. Figure B shows weed Q already growing in film F. Since weeds create a space between the film and the soil, the nozzle is inserted into the center of 畝 U and the chemical is applied to the crop. If sprayed toward the bottom of the ridge, the chemical will hit the weeds and film and splash over a wide area. Figure C shows the film F in close contact with the soil of 畝 U. When the nozzle is inserted into the film and lifted slightly, the film is sandwiched and lifted by the constriction of the nozzle, creating a space sp between the soil and the film. . The chemical sprayed from the nozzle bounces off the bottom surface of the film and is spread over a wide area.

In either case, the spraying amount or the pressure can be changed by adjusting the direction of the injection port of each nozzle in advance, changing the degree of pressing of the lever 20, or changing the supply amount or pressure from the liquid supply source. The range can be changed.

The present invention is to efficiently spray water, fertilizers, soil treatment agents, fungicides, insecticides, herbicides, etc. on the soil surface covered with a film with little fatigue while the worker is standing. In particular, it is useful in small-scale cultivation that relies mainly on human power for agricultural work.

1 ... Tube (pipe)
2 ... Cross fitting 3 ... Nozzle mounting tube 4 ... Mounting screw 5 ... Nozzle 6 ... Neck 7 ... Jet 8 ... Liquid feed channel 9 ... Curved surface 10・ ・ Grip 11 ... Cock 12 ... Mounting screw 13 ... Bending liquid supply path 14 ... Ground 15 ... Mounting screw 16 ... Valve seat 17 ... Valve 18 ... Valve stem 19 ... Coil spring 20 ... Control lever 21 ... Supporting shaft 22 ... Thumb rest 51 ... Nozzle lower end 52 ... Screw connection part
F ... Film
L ... Propellant
P ... Crop
Q ... Weed
R: curvature of the curved surface 9
U ... 畝
sp ・ ・ ・ Space θ ・ ・ ・ Spreading angle

Claims (4)

It consists of a cane-shaped injection tube, a tubular grip provided in a T-shape at one end of the injection tube, a cock provided in the grip, and a nozzle connected to the other end of the injection tube.
A sprayer that pierces the film through the film that covers the straw in multi-coated cultivation, supplies chemicals, etc., to the liquid feed path that connects the cock, the tube, and the nozzle, and sprays and sprays it from the nozzle's spray port under the film. There,
An operating lever that controls the opening and closing of the liquid feed path in the cock is projected on the grip at a position where it can be opened and closed from the outside with the thumb of the hand holding the grip.
A sprayer for a medicine or the like, characterized in that an injection port of a nozzle is arranged to be deflected with respect to an axial direction of a liquid supply path. 2. A sprayer according to claim 1, wherein the nozzle is connected to the tip of each of the branched pipes, and the injection port of each nozzle is variably opened around the axis of the liquid feed path of the nozzle. The spreader according to claim 1 or 2, wherein the nozzle injection port is defined by a deflection curved surface crossing the axis of the liquid feeding path in the nozzle. The spreader according to any one of claims 1 to 3, wherein the total length of the jet tube and the nozzle is selected to be a length that can be easily handled by an operator who holds the grip, and the thumb rest of the operation lever is disposed so as to protrude outside the grip. .

Images