JP6048727B2 - Spraying machine - Google Patents

Description

  The present invention relates to a sprayer that sprays liquids such as chemicals, liquid fertilizers, and water onto fields and the like, and in particular, a sprayer provided with a liquid scattering prevention cover that prevents scattering of liquid ejected from a nozzle into the atmosphere. It is about.

  Conventionally, a sprayer that sprays liquid that is pumped downward by a pump onto a machine body equipped with wheels has been used in farm work sites, and has a liquid scattering prevention cover that prevents the sprayed liquid from scattering into the atmosphere. Inventions related to sprayers are also known (Patent Documents 1 and 2).

JP-A-11-56201 JP 2011-250777 A

  Since the invention described in Patent Document 1 is used in a teacup, the cover end on the traveling direction side of the sprayer is cut short, and the opening formed below the cover end becomes wide. Yes. Therefore, when liquid splashes into the atmosphere from the opening on the traveling direction side, it may adhere to the face of the operator who is operating the sprayer downwind. Needed to be protected with a hat, hood, mask, etc.

  Moreover, although the invention described in Patent Document 2 has a configuration in which an air collection tube is installed in the anti-scattering cover, and the herbicide sprayed unnecessarily is collected and reused, this device is complicated. As a result, the manufacturing cost is increased, and as a result, the sprayer is more expensive than the conventional sprayer.

  In view of the above points, the present invention uses an airframe equipped with a driving device such as a tractor, can spray with a simple configuration that does not increase the cost, and reliably prevents the scattering of liquid into the atmosphere. It is an object of the present invention to provide a sprayer equipped with a liquid scattering prevention cover that can perform the above.

According to the first aspect of the present invention, there is provided a sprayer that includes a machine body having a wheel and a drive device that drives the wheel, and sprays liquid that is pumped from a pump. And a liquid splash prevention cover that covers the jet pipe, the liquid splash prevention cover comprising: a connecting member that connects to the fuselage; a fixing member that fixes the jet pipe; A frame member that is connected to the fixing member and the connection member and that is provided outside the jet tube, and a resin plate or a resin sheet that closes an opening formed by the frame member, the frame member and the resin A panel is formed by a plate or the resin sheet, and a front panel that blocks a direction perpendicular to the ground on the traveling direction side of the airframe, a ceiling surface on the upstream side of the nozzle, and the airframe After opposite direction of travel Preparative the inclined surface panel which closes integrally with, it said and a side panel of the left and right closing the both side surfaces formed between the front panel and said inclined surface panel, an opening is formed downstream of the injection port In addition , the inclined surface panel is installed so as to be openable and closable with respect to the frame member by a rotating member . Therefore, it is possible to take in crops and grass that spray liquid into the cover from the opening formed on the downstream side of the nozzle. In addition, since the inclined panel forms a wide space from directly below the nozzle hole to the side opposite to the traveling direction of the aircraft, the liquid can be reliably attached to the target crop or grass. Moreover, since the liquid adhering to the liquid scattering prevention cover can be minimized, it is possible to save liquid such as agricultural chemicals to be sprayed. In addition, since the inclined surface panel can be opened and closed by the rotating member, it is possible to easily perform repair / replacement work when clogging occurs in the nozzle tube or nozzle.

The invention of claim 2 is characterized in that, in the invention of claim 1 , the resin plate or the resin sheet is detachably installed on the frame member. Therefore, when the resin plate or the resin sheet becomes dirty or damaged, repair, cleaning, replacement work, and the like can be easily performed.

In the invention of claim 3, in the invention of claim 1 or 2 , one end is fixed near the opening of the frame member, extends substantially vertically downward with respect to the ground, and the other end becomes a free end. The extending member is formed of a resin plate or a resin sheet. The extension member can reliably reduce the scattering of the liquid into the atmosphere.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the extension member is installed so as to be wound around a half circumference or more of the opening of the frame member. By comprising in this way, compared with the case where an extending member is installed in the state which can be rock | fluctuated back and forth with respect to the advancing direction, scattering of the liquid to air | atmosphere can be suppressed.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects of the present invention, the jet tube is installed such that its longitudinal direction has an angle of approximately 90 degrees with respect to the traveling direction of the fuselage. A slit is formed so as to be parallel to the longitudinal direction of the jet tube, and sprayed in a film shape in a direction having an angle of about 90 degrees with respect to the traveling direction of the airframe. By comprising in this way, while being surely adhered to the crop, grass, etc. which become liquids, the dispersion | distribution of the liquid to air | atmosphere can be reduced reliably.

According to the first aspect of the present invention, even when clogging occurs in the nozzle or the nozzle or when there is no liquid to be sprayed, it can be immediately detected and dealt with. In addition, the liquid can be reliably attached to the target crops and grasses, and liquids such as agricultural chemicals to be sprayed can be saved. In addition, it is possible to easily perform repair / replacement work when clogging occurs in the nozzle or nozzle. In the invention of claim 2 , repair, cleaning, replacement work, etc. can be easily performed when the resin plate or the resin sheet is soiled or damaged. Moreover, in invention of Claim 3 and 4 , scattering of the liquid in air | atmosphere can be suppressed. Furthermore, in the invention of claim 5 , the liquid reliably adheres to the target crop or grass, and the scattering of the liquid into the atmosphere can be reliably reduced.

The perspective view which shows the liquid scattering prevention cover part of the sprayer which concerns on this invention. The front view. The rear view. The right side view. The left side view. FIG. The bottom view. Explanatory drawing which shows the state which the inclined surface panel opened. Explanatory drawing which shows the dispersion direction of the liquid injected from a nozzle. The perspective view which shows the whole sprayer which concerns on this invention.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a liquid scattering prevention cover portion of a sprayer according to the present invention. As shown in this figure, the sprayer has an injection tube 1 having a plurality of injection holes 2 in the longitudinal direction. Further, the periphery of the jet tube 1 is covered with a liquid scattering prevention cover 3. The liquid scattering prevention cover 3 includes a connecting member 4 connected to a machine body having a wheel to be described later and a driving device for driving the wheel via a fixing piece 4a, a fixing member 5 for fixing the injection tube 1, A frame member 6 that is connected to the fixing member 5 and the connection member 4 and that is provided outside the injection tube 1, and a transparent resin plate or a transparent resin sheet 7 that closes an opening formed by the frame member 6. I have. Here, the transparent resin plate or the transparent resin sheet 7 is detachably installed on the frame member 6. Therefore, when the transparent resin plate or the transparent resin sheet 7 becomes dirty or damaged, repair, cleaning, replacement work, and the like can be easily performed.

The liquid scattering prevention cover 3 has an opening 8 on the downstream side of the nozzle 2. Therefore, it is possible to take in crops and grass for spraying the liquid into the liquid splash prevention cover 3 from the opening 8 formed on the downstream side of the nozzle 2. Moreover, since it can be easily confirmed from the outside that the liquid adheres to the transparent resin plate or the transparent resin sheet 7, when the clogging occurs in the injection tube 1 or the injection port 2, the liquid to be dispersed Even if it disappears, it can be discovered and dealt with immediately.

  2 is a front view showing a liquid splash prevention cover portion of the sprayer according to the present invention, FIG. 3 is a rear view, FIG. 4 is a right side view, FIG. 5 is a left side view, and FIG. A plan view and FIG. 7 are bottom views. As shown in these drawings, the liquid scattering prevention cover 3 is formed by a frame member 6, 9 a, 9 b, 9 c and a transparent resin plate or a transparent resin sheet 7. A front panel 9 that covers the direction side and perpendicular to the ground, an inclined panel 11 that integrally blocks a ceiling surface on the upstream side of the nozzle 2 and a rear surface opposite to the traveling direction of the fuselage, Left and right side panels 10 and 10 are provided to close both side surfaces formed between the panel 9 and the inclined surface panel 11.

  The inclined surface panel 11 forms a wide space from directly below the nozzle hole 2 in the direction opposite to the traveling direction of the aircraft, so that the liquid can be reliably attached to the target crop or grass. . Moreover, since the liquid adhering to the liquid scattering prevention cover 3 can be suppressed to the minimum, it is possible to save liquid such as agricultural chemicals to be sprayed.

  As shown in FIGS. 4 and 5, the liquid scattering prevention cover 3 has one end fixed in the vicinity of the opening 8 of the frame member 6, extends substantially vertically downward with respect to the ground, and the other end is free. The extending members 7a and 7b at the ends are formed of a transparent resin plate or a transparent resin sheet. Therefore, the extension members 7a and 7b can surely reduce the scattering of liquid into the atmosphere, and the extension members 7a and 7b are formed of a transparent resin plate or a transparent resin sheet, so that the liquid adheres. Since it can be easily confirmed from the outside, even when clogging occurs in the jet tube 1 or the nozzle 2 or when there is no liquid to be sprayed, it can be immediately detected and dealt with.

  Further, the extension member 7 a is installed so as to wind around the half circumference of the opening 8 of the frame member 6. By comprising in this way, compared with the case where the extending member 7a is installed in the state which can be rock | fluctuated in the front-back direction with respect to the advancing direction, scattering of the liquid in air | atmosphere can be suppressed.

  FIG. 8 is an explanatory view showing a state in which the inclined panel is opened. As shown in this figure, the inclined surface panel 11 is installed by a rotating member 12 so as to be openable and closable with respect to the panels 9 and 10 other than the inclined surface panel 11. Then, by fixing one end portion 14 b of the support piece 14 to the support member 13 extending from the front panel 9 and fixing the other end portion 14 a of the support piece 14 to the inclined surface panel 11, the inclined surface panel. 11 is maintained in an open state. A hinge or the like may be used for the rotating member 12. In addition, by installing a plurality of rotating members 12 in the longitudinal direction of the inclined surface panel 11, the opening / closing operation can be easily performed. Note that a member denoted by reference numeral 23 shown in FIG. 8 is a liquid supply pipe that connects the liquid tank and the injection pipe 1 installed in the machine body.

  FIG. 9 is an explanatory diagram showing the spraying direction of the liquid ejected from the nozzle 2. The jet tube 1 is installed so that the longitudinal direction thereof has an angle of about 90 degrees with respect to the traveling direction E of the fuselage, and the nozzle 2 is formed with a slit 2a so as to be parallel to the longitudinal direction of the jet tube. ing. Therefore, as shown in FIG. 9, the liquids A and B are sprayed in a film shape in a direction C having an angle of about 90 degrees with respect to the traveling direction E of the aircraft. By comprising in this way, while being surely adhered to the crop, grass, etc. which become liquids, the dispersion | distribution of the liquid to air | atmosphere can be reduced reliably. Moreover, since the width D of the film parallel to the traveling direction of the aircraft can be reduced, the amount of liquid adhering to the transparent resin plate or the transparent resin sheet can be suppressed. Can be saved.

  FIG. 10 is a perspective view showing the entire sprayer according to the present invention. As shown in this figure, the sprayer 20 includes a machine body having a wheel 21 and a driving device (not shown) for driving the wheel 21, and pumps liquid stored in the tank 24 ( The liquid is sprayed from the nozzle 2 through the liquid supply pipe 23 to the jet pipe 1 where the liquid scattering prevention cover 3 is installed. The jet tube 1 and the liquid scattering prevention cover 3 are integrated with the airframe when the connecting member 4 is connected to a fixing bar 22 provided at the rear of the airframe via a fixing piece 4a. Note that it is preferable to use an on-off valve (not shown) constituting the nozzle hole 2 that has a function of opening when a predetermined pressure is applied from the pump and closing when the pressure is lower than the predetermined pressure. By using the on-off valve, it is possible to prevent dripping and to prevent the liquid from being sprayed to unnecessary places.

  Next, an experiment was conducted to compare a sprayer using the liquid scattering prevention cover constituting the present invention with a sprayer not used. The experimental results are shown in Tables 1 to 4.

  Tables 1 and 2 show the experimental results when the tractor is traveling at a high speed (7 to 8 km / h). Table 1 shows the case where the liquid splash prevention cover is not used, and Table 2 shows the liquid splash prevention cover according to the present invention. This is the case. In the experiment, water sensitive paper was installed at a height of 10 cm and 30 cm above the ground at distances of 1 m, 3 m, and 5 m from the tractor, and the sprayed liquid was water. As shown in Table 1, it was confirmed that in a sprayer that does not use a liquid scattering prevention cover, the amount of liquid scattering increases as the tractor is approached. On the other hand, as shown in Table 2, in the sprayer using the liquid scattering prevention cover, the scattering of the liquid was not confirmed when the distance from the tractor was 1 m or more.

  Tables 3 and 4 show the experimental results when the tractor is traveling at a low speed (2 to 3 km / h). Table 3 shows the case where the liquid splash prevention cover is not used, and Table 4 shows the liquid splash prevention cover according to the present invention. This is the case. In the experiment, water sensitive paper was installed at a height of 10 cm and 30 cm above the ground at distances of 1 m, 3 m, and 5 m from the tractor, and the sprayed liquid was water. As shown in Table 3, it was confirmed that in the sprayer that does not use the liquid scattering prevention cover, the amount of liquid scattering increases as the distance from the tractor increases. On the other hand, as shown in Table 4, in the sprayer using the liquid scattering prevention cover, the amount of liquid scattering increased as the distance from the tractor approached, but compared with the case where the liquid scattering prevention cover was not used. It was confirmed that the amount of scattering was reduced.

  Moreover, the result shown by (None) of Table 4 is a case where the extension member is installed so as to be wound around more than a half circumference of the opening of the frame member so as to correspond to claim 6 of the present invention. In this case, it is confirmed that even when the vehicle is traveling at a low speed, it is possible to suppress the scattering of the liquid into the atmosphere as compared with the case where the extension member is installed so as to be swingable in the front-rear direction with respect to the traveling direction. No liquid splash was confirmed when the distance from the tractor was 1 m or more.

  The sprayer of the present invention is used when spraying a liquid such as a chemical solution, liquid fertilizer, water, etc. on a field or the like, and is useful for preventing the liquid sprayed from the nozzle from being scattered into the atmosphere.

DESCRIPTION OF SYMBOLS 1 Jet pipe 2 Injection hole 3 Liquid scattering prevention cover 4 Connection member 5 Fixing member 6 Frame member 7 Transparent resin board or transparent resin sheet 8 Opening 9 Front panel 10 Side panel 11 Inclined surface panel 12 Rotating member

Claims (5)

A sprayer that includes a machine body having a wheel and a drive device that drives the wheel, and sprays liquid pumped by a pump. The sprayer includes a nozzle tube having a plurality of nozzle holes in a longitudinal direction; A liquid splash prevention cover covering the jet tube, the liquid splash prevention cover comprising: a connecting member connected to the fuselage; a fixing member fixing the jet tube; and the fixing member and the connecting member; And a resin plate or a resin sheet for closing an opening formed by the frame member, and a panel formed by the frame member and the resin plate or the resin sheet. A front panel that blocks a direction perpendicular to the ground on the traveling direction side of the aircraft, a ceiling surface upstream of the nozzle, and a rear surface opposite to the traveling direction of the aircraft Tilt to block together And the surface panel, said and a side panel of the left and right closing the both side surfaces formed between the front panel and said inclined surface panel, an opening on the downstream side of the nozzle hole is formed, the inclined surface panel Is a sprayer which is installed so as to be openable and closable with respect to the frame member by a rotating member . The sprayer according to claim 1 , wherein the resin plate or the resin sheet is detachably installed on the frame member. An extension member having one end fixed near the opening of the frame member and extending substantially vertically downward with respect to the ground and the other end being a free end is formed of a resin plate or a resin sheet. The sprayer according to claim 1 or 2 , wherein the sprayer is provided. The sprayer according to claim 3 , wherein the extension member is installed so as to wind around the half circumference of the opening of the frame member. The jet tube is installed so that its longitudinal direction has an angle of approximately 90 degrees with respect to the traveling direction of the fuselage, and a slit is formed in the nozzle so as to be parallel to the longitudinal direction of the jet tube. The sprayer according to any one of claims 1 to 4 , wherein the sprayer is sprayed in a film shape in a direction having an angle of approximately 90 degrees with respect to a traveling direction of the airframe.

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