JPH0632208Y2 - Power spreader - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to a power spreader, and more particularly to a power spreader in which a drug tank unit and a blower unit are configured to be separably connectable.

[Prior art]

Conventionally, as a power spraying machine, by replacing a nozzle or a drug tank, it is possible to spray any liquid, powder, or granular drug, and further, a liquid drug or a powder drug. A dedicated sprayer known as a duster that uses powdered chemicals is hygroscopic, and must be completely removed from the chemical tank after use because the chemicals are hygroscopic. There was a case where it adhered to and hardened, which hindered its use at a later date. In addition, it is known that the blower unit and the drug tank unit are simply separated. For example, as disclosed in Japanese Utility Model Laid-Open No. 58-166855, there is provided a mounting seat for a drug tank unit on the upper part of a blower unit having a spiral air-flow path around the impeller. The medicine supply port formed at the bottom of the medicine tank attached to the container faces the metering chamber through the shutter mechanism. That is, the drug tank unit is detachably attached with the partition plate sandwiched therebetween, and the opening / closing plate that opens and closes the opening of the partition plate is attached to the rotary shaft that is rotatably supported by the mounting seat of the tank. Since this shutter mechanism is provided in the blower unit, when the blower unit and the drug tank unit are separated, the shutter mechanism remains on the blower unit side, so the bottom of the drug tank unit is open. Will remain

[Problems to be solved by the device]

The conventional power spraying machine as described above is configured such that it faces the medicine supply port formed at the bottom of the medicine tank just above the opening / closing plate that constitutes the shutter mechanism. Since the mechanism itself is attached to the blower unit side, when the drug tank unit is separated from the blower unit, the bottom of the drug tank unit remains open, so the drug remaining inside the tank will spill. If the bottom opening is not covered with a plate when it is moved to another place for removing the medicine, the medicine may be scattered around and the medicine may be damaged, which is very troublesome.

[Means for solving problems]

Therefore, this invention makes it possible to completely close the opening of the drug tank unit when the drug tank unit is separated from the blower unit, and furthermore, the opening of the drug tank unit is inadvertently opened as a function of the safety mechanism. Therefore, a metering valve that is openable and closable via a rotary shaft is provided at the supply port that opens at the bottom of the tank body that constitutes the drug tank unit. The end of the rotary shaft is provided with a closing operating rod, and this closing operating rod is composed of a main operating rod fixed to the rotating shaft and an auxiliary operating rod slidably provided on the rotating shaft. The auxiliary operating rod is configured to rotate, and when the auxiliary operating rod is released from the connection with the main operating rod, the auxiliary operating rod is guided by the rotating shaft and is moved by a predetermined amount by the spring fitted to the rotating shaft toward the medicine tank main body,
By engaging with a stopper provided integrally with the medicine tank body, rotation of the main operating rod and the rotation is regulated, and when the medicine tank unit is separated from the blower unit, the supply port is closed by a metering valve. It is characterized by having done.

【Example】

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In these drawings, reference numeral 10 is an engine unit mounted on the backpack frame 11, and the output of the engine unit 10 drives a blower unit 20 also mounted on the backpack frame 11. A drug tank unit 30 is mounted on the blower unit 20 in a superposed manner.
The agitating chamber provided in the and the metering chamber 27 provided in the casing 22 constituting the blower unit 20 below the tank unit are in communication with each other via the supply port 33, and the metering chamber 27 to the transfer pipe 47. A drug supply pipe 46 is connected to, and the leading end of the carrier pipe 47 is connected to a front pipe (not shown). Next, each unit will be described in detail. First, the blower unit 20 is mounted so that the impeller 24 can rotate in a space formed by abutting a pair of shell-shaped casings 21 and 22, and the casings 21 and 22 have flanges 21 around them.
A and 22A are engaged with the bolt nut 23,
A spiral passage is formed in the space inside the casing on the outer periphery of the impeller 24.
25 is formed, and a part of the carrier wind generated by the rotation of the impeller 24 is supplied from the spiral passage 25 to the stirring chamber of the medicine tank unit 30 via the metering chamber below the medicine tank unit 30. Has become. A mounting seat 26 of the medicine tank unit 30 is formed in a casing 22 that constitutes the blower unit 20, and a metering chamber 27 is formed in a lower space of the medicine tank unit 30 that is mounted on the mounting seat 26. , Communicates with the spiral passage 25 through a communication port 28. The drug tank unit 30 has a funnel portion 32 having a narrowed opening area at the bottom of the tank body 31, and the funnel portion 32
A supply port 33 for supplying a medicine is formed in the bottom portion of 32, and is attached to a mounting seat 26 via a fastening tool 34 fitted to the outer periphery of the funnel portion 32. The fastener 34 has a flange portion 34A that can be mounted on the mounting seat 26, and a bolt 29 passed through the notches 26X and 34X formed in common with the mounting seat 26 at a plurality of positions by a double nut 29A. It can be fastened. The bolt 29 is U-shaped, and the end of the toggle handle 29X is pivotally attached to its connecting portion 29B.
By loosening X, the bolt 29 can be rotated around the connecting portion 29B to escape from the notches 26X and 34X. A mounting member 35, which constitutes an opening / closing member that is in close contact with the inner peripheral surface of the supply port 33, is mounted on the supply port 33.
From the above, four support members 36 are formed straddling the space above the supply port 33, and the top end of this support member 36 has a raised shape higher than its lower end, and has a shaft at its center. A long rod support rod 37 is erected. A cylindrical spacer 38 is fitted to the support rod 37, and a bowl-shaped cap 39 serving as a closing member is fastened to the top end portion of the support rod 37 by a nut 37A, so that a space below the cap 39 is secured. A stirring chamber 40 is formed to take in a part of the carrier air from the blower unit 20 and stir the medicine to increase the fluidity. The cap 39 has a function of closing the drug supply port 33, and the powder drug moving to the supply port 33 is supplied at a stretch as shown in FIG.
It has the function of giving movement resistance so as not to block 33. Further, since the liquid medicine is used, it is necessary to close the supply port 33, so that the shape thereof can be closely attached to the step portion 35A of the taper portion of the inner peripheral edge portion of the mounting member 35 located around the supply port 33. A rim material 39A having the function of a packing material is fixed to the peripheral portion of the cap 39. A metering valve is provided at the supply port 33 at the bottom of the stirring chamber 40.
41 is arranged, and the end of the metering valve 41 is the fastener
Is supported by a support tool 43 with respect to a rotary shaft 42 passing through 34,
By rotating the meter through a link connected to the end of the rotary shaft 42, the metering valve 41 can rotate in the depth direction of the metering chamber to adjust the opening area of the supply port 33. ing. A supply port closing operation rod 420 such as a main operation rod and an auxiliary operation rod is attached to an end of the rotary shaft 42. That is, as shown in FIGS. 4 and 5, the main operating rod is attached to the end of the rotary shaft 42.
421 is fixed by welding etc., and this main operating rod 421
A guide pin 422 having a spacer is planted therein, and the length of the guide pin 422 is set to be slightly longer than the moving stroke of an auxiliary operating rod described later. An operation link 42 for adjusting the opening degree of the supply port 33 is provided at the end of the main operation rod 421.
The end portion 423A of 3 penetrates the auxiliary operating rod described later together, and the pin 42
It is locked by 4 Furthermore, a pressing spring 425 is wound around the end of the rotary shaft 42,
A boss 426 fitted to the rotary shaft 42 is pushed on the basis of the main operating rod 421, and there is an auxiliary operating rod 427 having one end fixed to the boss 426, and the other end is parallel to the main operating rod 421. Extends to. The auxiliary operating rod 427 is penetrated by the guide pin 422, and the main operating rod 421 is kept at an interval corresponding to the spacer provided on the guide pin 422, and the end portion 423A of the operation link 423 penetrates at the end portion. ing. On the other hand, an arm 428 is fixed to an end of the boss 426 on the side of the medicine tank body 31, and the rotation of the rotation shaft 42 is restricted when the arm 428 is engaged with a stopper 429 that extends to the side surface of the fastener 34. It is supposed to be done. Further, a box-shaped metering tray 45 having an open upper surface is accommodated in the metering chamber 27, and a peripheral edge 45 of the metering tray 45 is accommodated.
A is fixed near the mounting seat 26 via a packing 26A. This metering tray 45 has an air sampling hole 45B for taking in the carrier air of the impeller 24 of the blower unit 20, and loosens the powder around the cap 39 with wind pressure and wind speed to stir it in the stirring chamber 40 and supply it to the supply port. The powder medicine supplied from 33 is supplied into the metering space 45X. further,
The metering tray 45 has a delivery hole 45 on the surface facing the wind collecting hole 45B.
The medicine supply pipe 46 has Y and extends from the delivery hole 45Y. At the top of the tank main body 31, there is formed an input port 48 for loading a chemical such as a control agent.
Is large enough for humans to enter, and the cap 51
Has been applied. Next, the case of using the power spreader of the present invention will be described. First, the drug (powder) loaded in the tank body 31
The cap 39 once bears the weight of the entire drug,
From between the periphery of the cap 39 and the inner circumference of the tank main body 31 to the lower space of the cap 39, so-called agitation chamber 40, is dropped by agitation wind, and is agitated there to form an air-fuel mixture. Depending on the space 45X of the weighing tray 45 in the weighing chamber 27
Supplied inside. In this stirring chamber 40, stirring air generated by the rotation of the impeller 24 of the blower unit 20 is introduced by opening the metering valve 41,
The powdered medicine in the tank body 31 is sent out while being unraveled, and is supplied from the supply port 33 through the supply hole 45Y, the medicine supply pipe 46, and the inside of the carrier pipe 47. At this time, the medicine in the tank body 31 is unraveled and dropped by the stirring air into the stirring chamber 40 through the gap between the cap 39 and the inner wall of the tank body 31, and is stirred to be fluidized and stirred. Since the powder is fed to the supply port 33 in the closed state, it is possible to prevent the clogging, which is a so-called tapping phenomenon, which occurs in the powder having small particles. Further, in order to remove the powdered medicine remaining in the tank body 31 of the medicine tank unit 30 after the spraying work is completed, first,
It is necessary to separate the drug tank unit 30 from the blower unit 20. At this time, the supply port 33 formed in the bottom portion of the tank main body 31 needs to be completely closed by the metering valve 41. First, the operation link capturing the end of the closing operation rod 420. Pin 424 to the end 423A of 423
It is released by removing (changes from the state of FIGS. 4 and 5 to the state of FIG. 7). As a result, the elasticity of the pressing spring 425 wound around the end of the rotary shaft 42 causes the auxiliary operating rod 427.
Moves along the guide pin 422 and the boss 426 moves toward the medicine tank body 31 along the rotation shaft 42. Due to this movement, the arm 428 overlaps the stopper 429, the closing operation rod 420 is prevented from rotating in the opening direction of the metering valve 41, and the state where the metering valve 41 closes the supply port 33 is maintained. Then, the medicine tank unit 30 is separated from the blower unit 20, and the toggle handle 29X is rotated in the projecting direction (arrow B direction in FIG. 9) and the bolt 29 is rotated in the arrow A direction in FIG. Fasteners for mounting seat 26
Unfasten the flange 34A of 34. Since the bottom surface of the medicine tank unit 30 is closed, the medicine tank unit 30 is moved to a bucket or a medicine receiving container such as a tank, where the auxiliary operation rod 427 of the closing operation rod 420 is gripped together with the main operation rod 421. When inserted, the boss 426 moves along the rotation axis 42, the auxiliary operation rod 427 moves along the guide pin 422, and the arm 42
Since 8 is disengaged from the locking region of the stopper 429, the entire closing operation rod 420 is rotated here to open the metering valve 41 and discharge and remove the drug remaining in the tank body 31. Although the auxiliary operating rod is guided by the rotary shaft 42 and the guide pin 422 in the above embodiment, the guide pin 422 is omitted by forming the spline or the angular shaft portion on the rotary shaft 42. It is possible to

[Effect of device]

As is clear from the above description, the power spreader of the present invention has the following effects. (a) At the end of the rotary shaft of the metering valve pivotally attached to the supply port of the drug tank unit, a closing operation rod is provided by a main operation rod integrated with this and an auxiliary operation rod movable along the rotation shaft. Since the stopper for blocking the rotation of the auxiliary operation rod when the auxiliary operation rod is elastically moved toward the main body of the medicine tank by the pressing spring by releasing the connection with the main operation rod is provided integrally with the main body of the medicine tank. The supply port opened at the bottom can be closed when the blower unit and the drug tank unit are separated, and also the supply port is not opened carelessly.

[Brief description of drawings]

1 is a side view of the power spreader of the present invention, and FIG. 2 is a first view.
FIG. 3 is an enlarged sectional view taken along the line II-II in FIG.
FIG. 4 is a sectional view taken along the line of FIG. 4, and FIG.
-V line sectional view, FIG. 6 is an enlarged sectional view corresponding to FIG. 2 in a closed state of the supply port, FIG. 7 is an enlarged sectional view in a closed state of the metering valve in FIG. 5, and FIG. 8 is for a blower unit. FIG. 9 is a side view showing a connected state of the medicine tank unit, and FIG.
FIG. 9 is a sectional view taken along the line IX-IX. 10 …… Engine unit 20 …… Blower unit 21,22 …… Casing, 23 …… Bolt nut 24 …… Impeller, 25 …… Swirl passage, 26 …… Mounting seat 27 …… Measuring chamber, 28 …… Communication Mouth 30 …… Drug tank unit 31 …… Tank body, 32 …… Rot part, 33 …… Supply port 34 …… Fastener, 35 …… Mounting member, 36 …… Supporting member 37 …… Supporting rod, 38… … Spacer, 39 …… Cap 40 …… Stirring chamber 41 …… Metering valve 42 …… Rotary shaft, 420 …… Closing operating rod, 421 …… Main operating rod,
422 …… guide pin, 423 …… operation link, 424 …… pin, 425 …… press spring, 426 …… boss, 427 …… auxiliary operating rod, 428 …… arm, 429 …… stopper 45 …… metering tray , 45B ... Winding hole, 45Y ... Delivery hole 45X ... Metering space, 46 ... Drug supply pipe, 47 ... Conveying pipe 50 ... Input port

Claims (1)

[Scope of utility model registration request] 1. A power spreader comprising: a blower unit driven by the output of an engine; and a tank unit capable of loading a drug in powder or granular form, wherein the blower unit and the tank unit are configured to be separably connectable. A metering valve that is openable and closable via a rotary shaft is provided at a supply port opened at the bottom of the tank body that constitutes the drug tank unit,
A closing operation rod is provided at the end of the rotary shaft of the metering valve, and the closing operation rod is composed of a main operation rod fixed to the rotary shaft and an auxiliary operation rod slidably provided on the rotary shaft. The operating rod is configured to always rotate at the same time, and the auxiliary operating rod is guided by the rotating shaft when the connection with the main operating rod is released, and a predetermined amount is applied to the medicine tank main body side by a spring fitted on the rotating shaft. By moving and engaging a stopper integrally provided with the medicine tank body, rotation of the main operating rod and the rotation is regulated, and when the medicine tank unit is separated from the blower unit, the supply port is controlled by a metering valve. A power spreader characterized by being configured to close.