JP3529975B2 - Liquid storage tank - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for a backpack-type spreader, has excellent operability, is less likely to roll the liquid in the tank during liquid spraying, and can reduce the amount of residual liquid in the tank. The present invention relates to a liquid storage tank for spraying liquid.

[0002]

2. Description of the Related Art The work of spraying a liquid is performed in various places. For example, spraying water, pesticides, fertilizers, etc. on farms, fields, or home gardens, sprinkling water on roads, spraying roadside trees, spraying chemicals for pest control, etc. These operations may be performed on a large scale with a machine, with household equipment such as a watering can, or with a liquid sprayer of the type that carries a tank containing liquid such as chemicals on its back. is there.

The present invention has excellent workability, and is used when carrying a liquid spraying work by carrying a tank containing a liquid such as a medicine on the back, less lateral roll of the liquid in the tank during the liquid spraying, and the inside of the tank. It is intended to provide a backpack type liquid storage tank capable of reducing the amount of residual liquid.

Generally, a backpack type power spreader (20) is
The pedestal (6) is equipped with an engine (7), a pump (8), a liquid storage tank (3), etc., the back support (5) is applied to the back, and the back strap (9) is carried on the back, and liquid is discharged from the nozzle (17). It is structured to spray. The liquid storage tank (3) has a tank lid (2) and a breather (air circulation hole).
(4), drain port (12), liquid suction port (10), liquid reservoir (1
8), a residual liquid port (13) and the like are provided. The supply port (1) is an inlet for supplying a liquid prepared in advance to the liquid storage tank (3). The back side of the liquid storage tank (3) is flat, and the back support (5) is fixed over the liquid storage tank and the pedestal (6).

An operator carries a liquid sprayer on his back and sprays a liquid such as a chemical liquid to a required place while walking. At this time, the liquid in the liquid storage tank sways in synchronism with the walking pace, and the liquid storage tank itself and the worker are shaken, which makes it difficult to perform the liquid spraying work and causes a great deal of fatigue to the worker. It has become a thing.

Further, when the amount of the liquid in the liquid storage tank becomes small, the liquid in the liquid storage is also shaken sideways at the same time in synchronism with the walking pace, so that the liquid suction port is exposed to the atmosphere and the pump operates. The liquid cannot be sucked and the air is sucked. The pump comes to alternately suck the liquid and the air, and the liquid is sprayed intermittently. If this becomes violent, the spraying work will be terminated while leaving a considerable amount of residual liquid in the liquid storage tank.

In the conventional backpack-type liquid storage tank, the effect of the liquid storage is exhibited in the stationary state, but in the case of spraying while walking, the pacing of the liquid in the tank Since the rolling occurs in synchronism with the above, the effect of the liquid reservoir is significantly reduced, and as a result, a large amount of residual liquid is generated in the liquid storage tank.

[0008]

SUMMARY OF THE INVENTION In view of the above-mentioned circumstances, an object of the present invention is to provide a liquid spraying machine for reducing the rolling of the liquid during the spraying of the liquid and reducing the residual liquid amount. It is to provide a liquid storage tank.

[0009]

SUMMARY OF THE INVENTION The gist of the present invention is a liquid storage tank having a supply port at the top and a drainage port at the bottom, the central part of the liquid storage tank excluding both ends of the lower part. Hollow
Are provided at both left and right ends of the lower portion of the liquid storage tank , and connecting passages connecting the expanding portions are provided, and the expanding portion and the bottom of the connecting passage are flush with each other.
Is, the communication with the liquid suction port for during passage of the communication passage for delivering liquid at least該貯liquid tank to the outside
A liquid pool is formed that is depressed below the bottom of the contact passage.
The liquid storage tank is characterized in that its width substantially matches the width of the communication passage . The liquid storage tank can be carried on the back, and a step portion with which the backrest can come into contact can be formed on the expansion / contraction surface on the back of the liquid storage tank.

In the conventional liquid storage tank, as shown in FIGS. 3 and 4, a lower portion of the tank is provided with a step portion (19) so that a back support (5) can come into contact with the bottom portion of the liquid storage tank. It has substantially the same shape as the upper part of the liquid storage tank, except that a liquid reservoir (18) is provided in. Therefore, the liquid in the liquid storage tank sways in synchronization with the walking pace of the worker, and the liquid storage tank and the worker themselves are shaken accordingly. Further, when the amount of the liquid in the liquid storage tank becomes small, the liquid in the liquid reservoir (18) also sways along with the walking pace of the worker and goes out of the liquid reservoir, which is the effect of the liquid reservoir. Is small and the amount of residual liquid is large.

In the liquid storage tank of the present invention, as shown in FIG. 7, the central portion of the liquid storage tank except the both ends thereof is recessed (39, 40), and the back support is further provided. Is provided with step portions (41, 42).
The left and right ends of the lower part of the liquid storage tank are not dented like the central part, but retain the same shape as the upper part. Therefore, the left and right ends of the lower part of the liquid storage tank are shown to be expanded with respect to the central part of the lower part of the liquid storage tank. This is called an enormous part in the present invention. The recessed portion in the lower portion of the liquid storage tank substantially forms a communication passage (36) connecting the above-mentioned two enlarged portions. The communication passage (36) is formed by providing recesses (39, 40) in the liquid storage tank. The recesses are provided on the rear surface side (39) and the front surface side (40) of the liquid storage tank, and the communication passage (36) is formed substantially in the center of the liquid storage tank. A liquid reservoir (34) is provided at the bottom of the communication passage (36), and a liquid suction port (3) is provided at the bottom of the liquid reservoir (34).
5) is provided. The liquid suction port (35) is connected to the pump and serves to send the liquid in the liquid storage tank to the outside.

The liquid storage tank (30) of the present invention is provided with enlarged portions (37, 38) at the left and right ends of its lower portion, and a communication passage (36) for connecting the enlarged portions at its lower central portion. Is characterized by. When the liquid is sprayed using the liquid storage tank, the liquid in the liquid storage tank sways in the same manner as in the conventional liquid storage tank in synchronization with the operator's pace, but Recesses (39, 4) forming a communication passage
The energy of the liquid is lost when it hits the side of 0), and the damage caused by rolling is greatly mitigated. That is, the rolling of the liquid storage tank and the operator himself is greatly reduced. Thereby, the fatigue of the worker can be considerably reduced.

Further, when the amount of the liquid in the liquid storage tank becomes small, the liquid storage tank according to the present invention has a smaller volume in the lower portion as compared with the conventional one, and moreover, the communication passage (36). Even if the remaining liquid in the liquid storage tank sways in synchronism with the walking rhythm of the worker, the concave portions (39, 40) forming the movement range of the liquid is within the communication passage (36) and the enlarged portion ( 37, 38) and does not move in a diffusive manner as in a conventional liquid storage tank. Since the liquid reservoir (34) is provided so as to be depressed at the bottom of the communication passage, the liquid in the shaken liquid storage tank inevitably concentrates and flows into the liquid reservoir (34). In this way, the residual liquid can be extremely reduced in the liquid storage tank of the present invention.

Further, the liquid storage tank of the present invention can be mounted on a conventional liquid spraying machine for use. The liquid atomizer includes at least a liquid storage tank, a pump for sending a liquid, an engine for driving the pump, a liquid storage tank,
It is composed of a pump, a base on which an engine is placed, a backrest, and a carrying band for carrying the back. It does not matter if accessories other than these are provided. At this time, since the liquid storage tank only needs to be replaced, the liquid storage tank of the present invention can be easily used in the conventional liquid spraying machine.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 5 to 7 show a liquid storage tank according to the embodiment of the present invention. 5 is a side view of the liquid storage tank according to the embodiment of the present invention, FIG. 6 is a front view of the liquid storage tank shown in FIG. 5, and FIG. 7 is an AA of the liquid storage tank shown in FIG. FIG.

As shown in FIGS. 5 to 7, in the lower portion of the liquid storage tank 30 according to this embodiment, the liquid storage tank 3 is provided.
The recesses 39 and 40 are provided near the center of 0 to expand and contract the liquid storage tank 30 to form the communication passage 36, and the enlarged portions 37 and 38 are formed at the left and right ends of the lower part of the liquid storage tank 30. Has been done. A residual liquid port 33 and a liquid reservoir 34 are provided in the communication passage 36, and a liquid suction port 35 is installed at the bottom of the liquid reservoir 34. The liquid reservoir 34 is provided at a position lower than the bottom of the communication passage. The liquid suction port 33 and the liquid suction port 34 are connected to a pump. Further, in the liquid storage tank 30, a supply port 31 is attached to an upper part and a drain port 32 is attached to a lower part.

Further, the recess 3 on the carrying side of the liquid storage tank 30
9 is expanded and contracted in two steps to form step portions 41 and 42. This is so that the backrest can come into contact with this portion when the liquid storage tank is carried on the back. Enormous part 37, 3
The heights of 8 and the communication passage 36 are set lower than the height of the liquid storage tank 30.

A liquid such as a chemical liquid is supplied to the liquid storage tank 30 through the supply port 31. The liquid in the tank is sprayed from the spray nozzle from the liquid suction port 35 or the residual liquid port 33, and then from the spray nozzle. Liquid is sprayed while walking. The liquid in the liquid storage tank sways in accordance with the walking pace, but in the liquid storage tank of the present invention, the swayed liquid is recessed 3
9 or the side surface of the recess 40 is hit to reduce the rolling, and as a result, the influence of the rolling of the liquid is reduced and the workability is improved. That is, shaking of the liquid storage tank and the operator is significantly reduced, and fatigue of the operator is also reduced.

On the other hand, when the liquid spraying work progresses and the amount of liquid in the liquid storage tank decreases, the liquid in the liquid storage tank basically moves in the communication passage 36 in synchronism with the walking pace of the worker. Although shaken through, since the liquid reservoir 34 is in the passage of the communication passage 36, the shaken liquid inevitably falls into the liquid reservoir 34 intensively. Finally, most of the residual liquid enters the liquid reservoir 34, so that the amount of the residual liquid in the liquid storage tank can be reduced.

The actual liquid spraying work is performed using the liquid sprayer equipped with the liquid storage tank of the present invention. The structure of the liquid sprayer is basically the same as that of the conventional liquid sprayer except that the liquid storage tank of the present invention is used. That is, the liquid sprayer
The liquid storage tank, engine, pump, back support according to the present invention,
It consists of a gantry, a nozzle, and a shoulder strap. At the time of use, carry the liquid supplied from the pump while carrying it on the back with a shoulder strap and spray the liquid from the nozzle.

When the liquid storage tank of the present invention is applied to a liquid spraying machine, no additional parts are required except that the liquid storage tank of the present invention is used as described above, and the liquid storage tank may be replaced. Therefore, the liquid storage tank of the present invention can be advantageously used in terms of cost and maintenance because of its simple structure.

[0022]

As described above, the liquid storage tank of the present invention is
A liquid storage tank having a supply port at the top and a liquid discharge port at the bottom is provided with an enlarged portion at both left and right ends of the liquid storage tank and a communication passage connecting these enlarged portions, and By forming a liquid reservoir with a liquid suction port that sinks at least downward, the horizontal shake of the liquid storage tank and the operator himself based on the horizontal shake of the liquid during work is reduced, and The amount of residual liquid can be reduced. The sprayer using the liquid storage tank only needs to be replaced with the liquid storage tank of the conventional sprayer, is structurally simple, and has great advantages in terms of cost and maintenance.

[Brief description of drawings]

FIG. 1 is a side view of a conventional liquid spreader.

FIG. 2 is a front view of the liquid spraying machine shown in FIG.

FIG. 3 is a side view of a conventional liquid storage tank.

FIG. 4 is a front view of the liquid storage tank shown in FIG.

FIG. 5 is a side view of an example of the liquid storage tank of the present invention.

FIG. 6 is a front view of the liquid storage tank shown in FIG.

7 is a cross-sectional view taken along the line AA of the liquid storage tank shown in FIG.

[Explanation of symbols] 1,31 Supply port 2 tank lid 3, 30 Liquid storage tank 4 Breather 5 back rest 6 mounts 7 engine 8 pumps 9 shoulder strap 10, 35 Liquid suction port 11 Suction hose 12, 32 drainage port 13, 33 Spill port 14 cap 15 Extra liquid hose 16 Spraying hose 17 nozzles 18, 34 Liquid reservoir 19 steps 20 spreaders 36 communication passage 37, 38 Enormous section 39, 40 recess 41, 42 steps

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) A01M 7/00

Claims (2)

(57) [Claims] 1. A liquid storage tank having a supply port at the top and a liquid discharge port at the bottom , both ends of the lower part of the liquid storage tank.
By providing a recess in the central part except for the enlarged tank and the connecting passages connecting the expanded portions at the left and right ends of the lower portion of the liquid storage tank , the enlarged portion and the bottom of the connecting passage are
Are coplanar, forming a liquid reservoir for depressed to the bottom below the communication passage having a liquid suction port for during passage of the communication passage for delivering liquid at least該貯liquid tank to the outside, the A liquid storage tank, characterized in that the width of the liquid reservoir substantially matches the width of the communication passage . Wherein said liquid storage tank is capable backpack, characterized in that the back rest is formed is a stepped portion capable of contacting the backpack side deflating surface該貯tank, according to claim 1 Storage tank described .