JP3703397B2 - Speed sprayer jet head and liquid feeding method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a spray head of a speed sprayer and a liquid feeding method.
[0002]
[Prior art]
Conventionally, a spray head of a speed sprayer is provided with a front nozzle plate 51 and a rear nozzle plate 52 arranged at intervals in the front-rear direction as shown in FIG. Usually, 1 to 3 (two in the figure) wind guide plates 53 and 54 are provided. The nozzle plates 51 and 52 and the air guide plates 53 and 54 are provided with collars 61, 62 and 63 therebetween, and the collars 61, 62 and 63, the nozzle plates 51 and 52 and the air guide plate 53. , 54 are fastened by long bolts 64 and nuts 65 that pass through all of them, and are fixed to each other.
[0003]
On the other hand, although not shown in the drawings, piping from the pump installed on the front side of the front nozzle plate 51 to the nozzle pipe attached to the rear nozzle plate 52 bypasses the nozzle head and below the nozzle head. A hose passing through the side is used. A plurality of nozzles disposed between the front nozzle plate 51 and the rear nozzle plate 52 are attached to the nozzle pipe.
The chemical liquid pumped from the pump is sent to each nozzle through a hose and a nozzle pipe, and sprayed from each nozzle. The sprayed chemical liquid is further refined by the wind from the blower, and the opening of the jet head Is blown out in a curtain from the outside.
[0004]
[Problems to be solved by the invention]
However, in the jet head of a conventional speed sprayer, a hose that bypasses the jet head is used as a pipe that connects the front and rear of the jet head, so that there is a problem that the pipe becomes long and the head loss is large. In addition, since it is necessary to pass a plurality of hoses through a narrow portion at the lower part of the airframe, the hoses may come into contact with a part of the airframe and the hoses may be damaged. Furthermore, since hoses for piping and parts for fixing the jet heads 51 and 52 and the baffle plates 53 and 54 are required separately, the number of parts is increased, the number of assembling steps is increased, and the manufacturing cost is increased. There is a problem of becoming higher.
[0005]
The present invention has been made in view of the above circumstances, and provides a method for feeding a spray head of a speed sprayer that can shorten and simplify piping connecting the front and back of the jet head. With the goal.
In addition, the pipe connecting the front and back of the jet head can be shortened and simplified, and the speed sprayer can be used for fixing the front and rear jet plates to the pipe. The aim is to provide a jet head.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, there is provided a method for feeding a jet head of a speed sprayer, wherein a front jet plate (11) and a rear jet plate (12) arranged at intervals in the front-rear direction. In the nozzle (4) of the speed sprayer (S) equipped with a nozzle, the chemical solution from the pump is supplied from the front side of the nozzle plate (11) on the front side to the nozzle (12) provided on the nozzle plate (12) on the rear side ( 4A) is a method of feeding to the rear side of the front nozzle plate (12), and a liquid feed pipe penetrating the front nozzle plate (11) and the rear nozzle plate (12) ( According to 15), the chemical liquid from the pump is sent from the front side of the front nozzle plate (11) to the rear side of the rear nozzle plate (12).
[0007]
In the first aspect of the present invention, the chemical solution from the pump is fed from the front side of the front side jet plate to the rear side of the rear side jet plate by the liquid feed pipe passing through the front side jet plate and the rear side jet plate. It is done. Accordingly, the piping between these lines becomes straight and short, and since there is no bending, the head loss is reduced. In addition, the piping of this part is simplified, and since it does not pass through a narrow place in the lower part of the fuselage as in the prior art, damage to the piping is prevented.
[0008]
The jet head of the speed sprayer according to claim 2 includes a front jet plate (11) and a rear jet plate (12) disposed at a distance from each other in the front-rear direction, and these jet discs (11, 12). And a front end portion (15a) projecting forward from the front jet plate (11) is connected to the pump and a rear end portion (15b) projecting rearward from the rear jet plate (12). A plurality of liquid feeding pipes (15) connected to the nozzles (4A) provided on the nozzle plate (12) on the rear side, and these liquid feeding pipes (15) are connected to the nozzle plates (11). , 12) and fixing means (15c, 16, 17).
[0009]
In the invention according to claim 2, the chemical liquid sent from the pump passes through the liquid feed pipe penetrating the front side jet plate and the rear side jet plate, from the front side of the front side jet plate to the rear side of the back side jet plate. Sent to the side. Accordingly, the piping between these lines becomes straight and short, and since there is no bending, the head loss is reduced. In addition, the piping of this part is simplified, and since it does not pass through a narrow place in the lower part of the fuselage as in the prior art, damage to the piping is prevented. Furthermore, since the liquid feeding pipe also serves as a part for fixing the front and rear jet head plates, the number of parts and the number of assembling steps can be reduced, thereby reducing the manufacturing cost.
[0010]
The jet head of the speed sprayer according to claim 3 is the invention according to claim 2, wherein the fixing means (15c, 16, 17) for fixing the liquid feeding pipe (15) to the jet plate (11, 12). ) Is screwed into the male screw (15c) formed on the liquid feeding pipe (15) and the male screw (15c), and the front plate (11, 12) is connected to the front plate (11, 12) from the front side and the rear side. 12) It is characterized by comprising front and rear nuts (16, 17) for tightening.
[0011]
In the invention described in claim 3, since the male screw and the nut formed on the liquid feeding pipe are used as fixing means for fixing the liquid feeding pipe to the front and rear jet plates, these are manufactured by a normal manufacturing method. In addition, since the assembly can be performed by a normal method, the manufacturing cost can be kept low. Further, by changing the screwing position of the nut to the male screw of the liquid feeding pipe, the axial fixing position of the liquid feeding pipe to the nozzle plate can be easily changed.
[0012]
The jet head of the speed sprayer according to claim 4 is the invention according to claim 2 or claim 3, wherein the jet head plate (11) on the front side and the jet plate on the rear side (12) At least one air guide plate (13, 14) is disposed at a distance from the nozzle plate (11, 12), and the liquid feed pipes (15) penetrate through the air guide plate (13, 14). The liquid feeding pipes (15) are fixed to the air guide plates (13, 14) by fixing means (21, 22, 23, 24).
[0013]
In the invention according to claim 4, since the liquid feeding pipe also serves as a part for fixing the air guide plate as well as the front and rear jet plates, the number of parts can be reduced and the number of assembly steps can be reduced. Can be further reduced, thereby further reducing the manufacturing cost.
[0014]
The jet head of the speed sprayer according to a fifth aspect is the invention according to the fourth aspect, wherein the fixing means (21, 22) for fixing the liquid feeding pipe (15) to the air guide plate (13, 14). 23, 24) are front and rear retaining ring grooves (21, 22) formed before and after the air guide plate (13, 14) of the liquid feeding pipe (15), and the grooves. It is characterized by comprising front and rear retaining rings (23, 24) attached to (21, 22).
[0015]
In the invention described in claim 5, since the retaining ring groove and retaining ring formed in the liquid feeding pipe are used as fixing means for fixing the liquid feeding pipe to the air guide plate, these can be obtained by a normal manufacturing method. Since it can be manufactured and can be assembled by a normal method, the manufacturing cost can be kept low. In addition, since the position of the wind guide plate in the axial direction of the liquid feed pipe is determined by the position of the retaining ring groove, the gap between the front and rear jet plates or other wind guide plates is maintained appropriately and sent. The liquid pipe can be fixed to the air guide plate.
[0016]
In addition, the code | symbol in the bracket | parenthesis in the above expresses the corresponding element in drawing for convenience, Therefore, this invention is not limited to description on drawing. The same applies to the description in the column “Claims”.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 6 are views showing an embodiment of the present invention. FIG. 1 is a perspective view showing a speed sprayer according to this embodiment, FIG. 2 is a side view of FIG. 1, and FIG. FIG. 4 is a side view of FIG. 3, FIG. 5 is an enlarged perspective view of a part of FIG. 3, and FIG. 6 is the nozzle of FIG. It is the expansion perspective view which looked at a part of part from the back side.
[0018]
As shown in FIGS. 1 and 2, the speed sprayer S according to the present embodiment is provided at the foremost part in order from the front, and the driving unit 1 in which the driver gets in and operates the speed sprayer S; A chemical tank 2 for storing the liquid, an engine chamber 3 for storing a machine such as an engine or a pump, a jet head 4 in which a plurality of nozzles 4A for spraying chemical liquid to the surroundings are arranged, and provided at the last part. It has a blower unit 5 that discharges air sucked from behind by a blower to the jet head 4. The frame of the speed sprayer S is supported by the front wheels 6 and the rear wheels 7 so that only the rear wheels 7 are driven by the rear wheel drive as driving wheels, or both the front wheels 6 and the rear wheels 7 are driven. The vehicle is driven by four-wheel drive, which is a wheel.
[0019]
As shown in FIGS. 3 to 6, the jet head 4 includes a front jet plate 11 and a rear jet plate 12 which are arranged at intervals in the front-rear direction, and between the jet plate 11 and the jet plate 12. Are provided with at least one (two in this example) air guide plates 13 and 14 arranged at intervals. The air guide plates 13 and 14 are provided for adjusting the flow of the wind sent to the jet head 4 by the blower in the blower unit 5 and discharging the jet from the jet head 4. The jet plate 11, the wind guide plate 13, the wind guide plate 14, and the jet plate 12 that are arranged in order from the front are provided with two liquid feeding pipes 15 arranged at the upper and lower ends respectively. Is penetrated. Each liquid feeding pipe 15 has a front end portion 15 a protruding forward from the front jet plate 11 and a rear end portion 15 b protruding rearward from the rear jet head 12.
[0020]
The liquid feeding pipe 15 and the nozzle plates 11 and 12 are fixed as follows. That is, male screws 15c are formed at both end portions of the liquid feeding pipe 15 including the front and rear of each jet plate 11, 12, and nuts 16, 17 are formed on the male screw 15c from the front side and the rear side of each jet plate 11, 12. And the nuts 16 and 17 on the front side and the rear side are tightened in a state where the nozzle plates 11 and 12 are sandwiched with the washers 18 and 19 interposed therebetween, so that the liquid feeding pipe 15 and each nozzle plate 11 are clamped. , 12 are fixed to each other.
[0021]
On the other hand, the liquid feeding pipe 15 and the air guide plates 13 and 14 are fixed as follows. That is, front and rear retaining ring grooves 21 and 22 are formed in front and rear of each of the air guide plates 13 and 14 in the liquid feeding pipe 15, and the front and rear sides of these grooves 21 and 22 are formed. By attaching the retaining rings 23 and 24, the liquid feeding pipe 15 and the air guide plates 13 and 14 are fixed to each other.
Therefore, the nozzle plate 11, the wind guide plate 13, the wind guide plate 14, and the jet plate 12 are integrally connected by the four liquid feeding pipes 15.
[0022]
A hose (not shown) is connected to a pump installed in the engine chamber 3 located in front of the nozzle plate 11 at a front end portion 15a protruding forward from the nozzle plate 11 of each liquid feeding pipe 15. Connected by.
On the other hand, as shown in FIG. 6, an arc-shaped nozzle pipe 31 is attached to the outer peripheral portion of the rear surface of the nozzle plate 12 along the arc-shaped outer peripheral edge of the nozzle plate 12. A rear end portion 15 b protruding rearward from the nozzle plate 12 of each liquid feeding pipe 15 is connected by a short hose 32.
[0023]
A plurality of nozzles 4 </ b> A are attached to the nozzle pipe 31. A part of the nozzle holes 4 b of these nozzles 4 </ b> A extends through the through holes 12 a of the nozzle plate 12, and is arranged between the nozzle plate 12 and the air guide plate 14 at an equal interval in an arc shape. Further, the other nozzle holes 4 c of these nozzles 4 </ b> A are extended through the through holes 12 a of the nozzle plate 12 and the through holes 14 a of the air guide plate 14, and are circular between the air guide plate 13 and the air guide plate 14. The arcs are arranged at equal intervals. These nozzle holes 4 b and 4 c are arranged in a staggered pattern along the opening of the nozzle head 4.
[0024]
In FIG. 6, the nozzle pipe 31 attached to the left outer peripheral portion of the rear surface of the nozzle plate 12 is illustrated. Usually, two to four nozzle pipes are provided on the outer peripheral portion of the rear surface of the nozzle plate 12. 12 are attached along the outer peripheral edge. As described above, when a plurality of nozzle pipes are arranged, and a pipe from the pump is branched and a pipe for each nozzle pipe is provided, the liquid feeding is opened and closed for each of the plurality of nozzle pipes. Therefore, the chemical liquid can be sprayed from the jet head for each nozzle pipe, and thereby the spray shape of the chemical liquid from the jet head can be changed, and the chemical liquid spraying suitable for the spray target can be performed. Therefore, normally, the same number of liquid feeding pipes 15 are installed in accordance with the number of nozzle pipes installed.
[0025]
In the jet head 4 of the speed sprayer S configured as described above, the chemical liquid pumped from the pump in the engine chamber 3 is branched into four hoses, and the four liquid feed pipes 15 are branched from each hose. Is sent to the four nozzle pipes including the nozzle pipe 31 through the liquid feeding pipe 15 and the hose 32, and sprayed from the nozzle 4A attached to these nozzle pipes. The air is further refined by the wind from the blower in 5 and is blown out in a curtain shape outward from the opening of the jet head 4.
[0026]
In the jet head 4 of the speed sprayer S, the chemical solution sent from the pump in the engine chamber 3 passes through the liquid feed pipe 15 penetrating the front jet plate 11 and the rear jet plate 12 to the front side. Since the sheet is fed from the front side of the nozzle plate 11 to the rear side of the nozzle plate 12 on the rear side, the piping between them becomes straight and shortened, and the bending of the piping is eliminated, so that the head loss can be reduced. In addition, the piping of this portion is simplified, and the hose does not pass through a narrow place in the lower part of the fuselage as in the prior art, so that damage to the piping can be prevented. In addition, since the liquid feeding pipe 15 also serves as a part for fixing the front and rear jet head plates 11 and 12, and further the air guide plates 13 and 13, the number of parts and the number of assembly steps can be reduced. Therefore, the manufacturing cost can be reduced.
[0027]
Further, since the liquid feeding pipe 15 is fixed to the front and rear jet plates 11 and 12 using the male screw 15c and the nuts 16 and 17 formed on the liquid feeding pipe 15, these fixing members are formed by a normal manufacturing method. Since it can be manufactured and can be assembled by a normal method, the manufacturing cost can be kept low. Further, by changing the screwing position of the nuts 16 and 17 to the male screw 15c of the liquid feeding pipe 15, the axial fixing position of the liquid feeding pipe 15 to the nozzle plates 11 and 12 can be easily changed.
[0028]
Further, since the liquid feeding pipe 15 is fixed to the air guide plates 13 and 14 by using the retaining ring grooves 21 and 22 and the retaining rings 23 and 24 formed in the liquid feeding pipe 15, these fixing parts are attached. Since it can be manufactured by a normal manufacturing method and can be assembled by a normal method, the manufacturing cost can be kept low. Further, since the positions of the air guide plates 13 and 14 in the axial direction of the liquid feeding pipe 15 are determined by the positions of the retaining ring grooves 21 and 22 formed in the liquid feeding pipe 15, the front and rear jet plates are arranged. The liquid feed pipe 15 can be fixed to the air guide plates 13 and 14 while maintaining the appropriate distance between the air guide plates 11 and 12 and the air guide plates 13 and 14.
[0029]
In the above-described embodiment, the air guide plates 13 and 14 are provided. For example, the space between the nozzle plate 11 and the nozzle plate 12 is narrow, and the flow of the wind from the blower at the nozzle head 4 is guided by the air guide plate. When it is not necessary to arrange using the air guide plates 13, 14 can be omitted.
[0030]
In the above embodiment, the same number of liquid feeding pipes 15 are provided according to the number of nozzle pipes installed (four in the above embodiment), and one liquid feeding pipe 15 is changed to one nozzle pipe. Although the chemical solution is sent, instead of this, it is also possible to send the liquid from one liquid feeding pipe 15 to a plurality of nozzle pipes. Moreover, it is also possible to supply liquid from a plurality of liquid supply pipes 15 to one nozzle pipe.
[0031]
In the above embodiment, nuts are used before and after each of the nozzle plates 11 and 12 to fix the liquid feeding pipes to the nozzle plates 11 and 12, but instead of this, for example, the front of the nozzle plate 11 of the front side is used. Instead of the front nut 16, a protrusion such as a hook is formed at a portion to which the nut 16 is attached, and the liquid feeding pipe 15 is formed on the front nozzle plate 11, and the protrusion from the rear end 15 b side is formed on the nozzle plate 11. The liquid supply pipe 15 may be fixed to the jet plate 11 by inserting the bump plate 11 until it hits and tightening the jet plate 11 with the nut 17 screwed into the male screw 15c. Further, instead of the rear nut 17 on the rear jet plate 12, a protrusion is formed on the portion to which the nut 17 is attached, and the liquid feed pipe 15 is fixed to the jet plate 12 in the same manner. Also good.
[0032]
In the above embodiment, the retaining ring grooves 21 and 22 and the retaining rings 23 and 24 are used to fix the liquid feeding pipe 15 to the air guide plates 13 and 14. The front and rear portions of the air guide plates 13 and 14 of the liquid pipe 15 are formed with male screws, and the front and rear nuts of the air guide plates 13 and 14 screwed to the male screws are used to form the jet head plates 11 and 12. Similarly, the air guide plates 13 and 14 may be tightened by the front and rear nuts to fix the liquid feeding pipe 15 to the air guide plates 13 and 14.
In this case, in order to dispose the liquid feeding pipe 15 at a predetermined position in the nozzle plates 11 and 12 and the air guide plates 13 and 14, the central portion from the outer periphery to the nozzle plates 11 and 12 and the air guide plates 13 and 14 is provided. A groove for inserting the liquid feeding pipe is formed on the other hand, and a pair of front and rear nuts are attached to the liquid feeding pipe in advance, and the liquid feeding pipe with the nuts attached is connected to the insertion groove. Are inserted from the outer peripheral edge side of the nozzle plates 11 and 12 and the air guide plates 13 and 14.
In addition, you may make it form a male screw in the whole outer periphery of a liquid feeding pipe.
[0033]
In addition, instead of using the pair of nuts before and after the nozzle plates 11 and 12 and the air guide plates 13 and 14, instead of this, one nut of the pair of nuts is formed on a protrusion such as a hook. The nozzle plates 11 and 12 and the wind guide plates 13 and 14 are fastened by the protrusions and nuts, respectively, so that the liquid feeding pipe 15 is fixed to the nozzle plates 11 and 12 and the wind guide plates 13 and 14. Good.
[0034]
【The invention's effect】
As described above, according to the method of feeding the jet head of the speed sprayer of the present invention, the pipe connecting the front and rear of the jet head can be shortened, so that the head loss can be reduced. In addition, since this portion of the piping can be simplified, it is possible to prevent the hose from being damaged due to contact with a part of the machine body as in the prior art.
Further, according to the jet head of the speed sprayer of the present invention, the pipe connecting the front and rear of the jet head can be shortened, so that the head loss can be reduced. In addition, since this portion of the piping can be simplified, it is possible to prevent the hose from being damaged due to contact with a part of the machine body as in the prior art. Furthermore, since the parts for fixing the front and rear nozzle plates can be used in this part of the pipe, the number of parts and the number of assembly steps can be reduced, so that the manufacturing cost can be reduced. .
[Brief description of the drawings]
FIG. 1 is a perspective view showing a speed sprayer according to an embodiment of the present invention.
FIG. 2 is a side view of FIG.
FIG. 3 is an enlarged perspective view of the jet head shown in FIG. 1 as viewed from the front side with the nozzle omitted.
4 is a side view of FIG. 3. FIG.
FIG. 5 is a perspective view showing a part of FIG. 3 in an enlarged manner.
6 is an enlarged perspective view of a part of the jet head of FIG. 1 as seen from the rear side.
FIG. 7 is an exploded perspective view for explaining a method of fixing a jet head of a conventional speed sprayer.
[Explanation of symbols]
S speed sprayer 4 jet head 4A nozzle 11 front jet plate 12 rear jet plate 13, 14 air guide plate 15 liquid feed pipe 15a front end portion 15b rear end portion 15c male screw 16 front nut 17 rear nut 21 front side nut 21 Retaining ring groove 22 Rear retaining ring groove 23 Front retaining ring 24 Rear retaining ring

Claims (5)

In the spray head (4) of the speed sprayer (S) having the front nozzle plate (11) and the rear nozzle plate (12) arranged at intervals in the front-rear direction, the chemical solution from the pump is supplied to the front nozzle plate (11). A method of sending from the front side of the nozzle plate (11) to the rear side of the nozzle plate (12A) provided on the nozzle plate (12) on the rear side,
By a liquid feeding pipe (15) penetrating through the front-side nozzle plate (11) and the rear-side nozzle plate (12), the chemical solution from the pump is transferred from the front side to the rear side of the front-side nozzle plate (11). A method for feeding a spray head of a speed sprayer, characterized by feeding the back of the jet head plate (12). A front front plate (11) and a rear front plate (12) arranged at intervals in the front and rear;
A front end portion (15a) penetrating through these nozzle plates (11, 12) and projecting forward from the front nozzle plate (11) is connected to a pump and rearward from the rear nozzle plate (12). A plurality of liquid-feeding pipes (15) connected to nozzles (4A) provided on the rear nozzle plate (12), the rear end portion (15b) protruding to
Fixing means (15c, 16, 17) for fixing each of these liquid-feeding pipes (15) to each of the nozzle plates (11, 12);
A spray head of a speed sprayer characterized by comprising: The fixing means (15c, 16, 17) for fixing the liquid feeding pipe (15) to the nozzle plate (11, 12) includes a male screw (15c) formed in the liquid feeding pipe (15) and the male screw. (15c), and nuts (16, 17) on the front side and the rear side for fastening the nozzle plate (11, 12) from the front side and the rear side of the nozzle plate (11, 12). The spray head of the speed sprayer according to claim 2, wherein: At least one air guide plate (13, 14) is provided between the front plate (11) and the rear plate (12) at a distance from the front plate (11, 12). The liquid supply pipes (15) are penetrated through the air guide plates (13, 14), and the liquid supply pipes (15) are fixed to the air guide plates (13, 14). The spout head of the speed sprayer according to claim 2 or 3, wherein the jet head is fixed by (21, 22, 23, 24). The fixing means (21, 22, 23, 24) for fixing the liquid supply pipe (15) to the air guide plate (13, 14) is the air guide plate (13, 14) of the liquid supply pipe (15). ) Front and rear retaining ring grooves (21, 22) formed before and after the front and rear retaining rings (23, 24) attached to the respective grooves (21, 22). The spray head of the speed sprayer according to claim 4, further comprising:

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