JPH0611857U - Cleaning device for chemical spraying device - Google Patents

Abstract

(57) [Summary] [Object] To provide a cleaning device capable of efficiently and rationally cleaning a chemical liquid system of a chemical liquid spraying device 10. [Constitution] A cleaning liquid tank 46 for storing the cleaning liquid is provided together with the chemical liquid tank 12. The liquid detection switch 44 detects the presence or absence of the chemical liquid in the chemical liquid tank 12, and when the liquid detection switch 44 detects that the chemical liquid in the chemical liquid tank 12 is almost exhausted, the first switching valve 62 causes the multiple reciprocating strokes. Inlet for pump 52
56 is connected from the chemical liquid tank 12 to the cleaning liquid tank 46, and the cleaning liquid in the cleaning liquid tank 46 is sucked by the multiple reciprocating pump 52,
Is ejected. The cleaning liquid discharged from the multiple reciprocating pump 52 is guided to the spray nozzle 78 side or the cleaning nozzle 80 side by the second switching valve 72 and jetted from the spray nozzle 78 or into the chemical liquid tank 12 from the cleaning nozzle 80. It is introduced and discharged from the discharge valve 16.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cleaning device for cleaning a chemical liquid system of a chemical liquid spraying device, and more particularly to a cleaning device for a chemical liquid spraying device capable of efficient and rational cleaning.

[0002]

[Prior art]

 For example, the chemical spraying device installed on the bogie for rice transplanters is equipped with a chemical liquid tank, and sprays the chemical liquid pumped from the pump to the paddy field from the spray nozzle. The conventional chemical spraying device does not have a cleaning liquid tank, and when cleaning the chemical system after spraying the chemical, the chemical spraying device is moved to a water source such as a stream or a tap. Then, connect the suction side of the pump to a water source and let water as cleaning liquid flow from the pump to the spray nozzle to clean the chemical system from the pump to the spray nozzle, and at the same time, use a hose etc. from the upper inlet of the chemical tank. Water is sprayed into the chemical liquid tank to clean the chemical liquid tank.

[0003]

[Problems to be solved by the device]

 After the spraying of the chemical liquid is completed, it is troublesome and labor-intensive to move the chemical liquid spraying device to the water source for cleaning or to pour water into the chemical liquid tank from the upper inlet of the chemical liquid tank. Increase.

An object of the invention of claim 1 is to provide a cleaning device capable of efficiently and rationally cleaning a chemical liquid system including a chemical liquid tank of a chemical liquid spraying device. A further object of the invention of claim 2 is to provide a cleaning device capable of streamlining and rationalizing the switching of cleaning from the spray nozzle to the chemical liquid tank. An object of the invention of claim 3 is to provide a cleaning device for a chemical liquid spraying device, which can efficiently clean the inside of the chemical liquid tank with a cleaning liquid.

[0005]

Means for Solving the Problems This invention will be described using the reference numerals of the drawings corresponding to the embodiments. The cleaning device of the chemical liquid spraying device (10) of the first aspect has the following components (a) to (f). (A) Chemical liquid tank (12) for storing chemical liquid (b) Cleaning liquid tank (46) for storing cleaning liquid (c) Chemical liquid detection means (44) for detecting presence or absence of chemical liquid in the chemical liquid tank (12) (d) Chemical liquid It operates based on the detection of the detection means (44) and switches the suction side of the pump (52) to the chemical liquid tank (12) and the cleaning liquid tank (46) depending on the presence or absence of the chemical liquid in the chemical liquid tank (12). Switch valve 62 of No. 1 (e) Switch discharge side of pump (52) to spray nozzle (78) side and chemical solution tank (12) side Second switch valve (72) (f) Inside chemical solution tank (12) Drain valve (16)

The cleaning device for the chemical liquid spraying device (10) according to claim 2 further has the following (g) as a constituent element. (G) After a certain time after the first switching valve (62) switches the suction side of the pump (52) from the chemical liquid tank (12) to the cleaning liquid tank (46), the discharge side of the pump (52) has a spray nozzle (78). ) To control the second switching valve (72) so that the connection can be switched from the liquid chemical tank (12) side (90)

A cleaning device for a chemical liquid spraying device (10) according to a third aspect is in addition to the components (a) to (f) of the cleaning device for the chemical liquid spraying device (10) according to the first aspect, or In addition to the components (a) to (g) of the cleaning device of the chemical liquid spraying device (2), the following (h) and (i) are further provided as components. (H) A stirring blade (20) disposed in the chemical liquid tank (12) for stirring the chemical liquid in the chemical liquid tank (12), and a cleaning liquid introduced from the second switching valve (72) into the chemical liquid tank. Cleaning liquid inlet (80) to be introduced into (12) (i) Rotate integrally with the rotating shaft (22) of the stirring blade (20) to scatter the cleaning liquid from the cleaning liquid inlet (80) to the surroundings. Scattering member (28)

[0008]

[Action]

 In the cleaning device of the chemical liquid spraying device (10) according to claim 1, when the chemical liquid in the chemical liquid tank (12) becomes almost zero due to the spraying of the chemical liquid or the like, the chemical liquid detecting means (44) detects this. The first switching valve (62) connects the suction side of the pump (52) from the chemical liquid tank (12) to the cleaning liquid tank (46). The cleaning liquid in the cleaning liquid tank (46) is sucked and discharged by the pump (52) and is sent to the spray nozzle (78) side or the chemical liquid tank (12) side depending on the switching position of the second switching valve (72). To be When the cleaning liquid is sent to the spray nozzle (78) side, the cleaning liquid is jetted from the spray nozzle (78), and when the cleaning liquid is sent to the chemical liquid tank (12) side, the cleaning liquid is It is introduced into the chemical liquid tank (12) and discharged from the chemical liquid tank (12) via the discharge valve (16). When the cleaning liquid passes through the path of the chemical solution, it cleans the path.

In the cleaning device for the chemical liquid spraying device (10) of claim 2, the first switching valve (62) switches the suction side of the pump (52) from the chemical liquid tank (12) to the cleaning liquid tank (46). Immediately after that, the discharge side of the pump (52) is connected to the spray nozzle (78) side for a while. As a result, the cleaning liquid is guided from the first switching valve (62) to the spray nozzle (78), and the spray nozzle (78) side is cleaned. The timer (90) connects the discharge side of the pump (52) to the chemical liquid tank (12) side after a lapse of a certain time after the first switching valve (62) is switched, so that the cleaning liquid is not discharged. Is introduced into the chemical liquid tank (12) to clean the chemical liquid tank (12).

In the cleaning device for the chemical liquid spraying device (10) of the third aspect, the scattering member (28) rotates integrally with the rotary shaft (22) of the stirring blade (20). The cleaning liquid is supplied from the cleaning liquid inlet (80) at the upper part of the chemical liquid tank (12) into the chemical liquid tank (12), collides with the rotating spattering member (28), and is scattered to the surroundings. ) Efficiently adheres to the inner wall.

[0011]

【Example】

 The present invention will be described below with reference to the embodiments shown in the drawings. FIG. 1 is a configuration diagram of a chemical liquid spraying device 10 equipped with a cleaning device. This chemical solution spraying device 10 is designed to be mounted on a truck for a rice transplanter in which a rice transplanter can be detachably attached to the rear part, instead of the rice transplanter. The chemical liquid tank 12 stores a chemical liquid (not shown) inside and has a recess 14 at the bottom. The discharge valve 16 is arranged below the recess 14 so that the liquid in the chemical liquid tank 12 can be drained when opened. The charging port 18 projects upward from the side portion of the upper part of the chemical liquid tank 12 and is used when the chemical liquid is charged into the chemical liquid tank 12. The stirring blade 20 is disposed close to the bottom of the chemical liquid tank 12 and rotates integrally with the rotary shaft 22 extending along the center line in the chemical liquid tank 12. The motor 24 is fixed to the upper surface side of the upper wall 26 of the chemical liquid tank 12, and the scatter plate 28 is disposed immediately below the upper wall 26, and is integrally and rotatably coupled to the output shaft of the motor 24 and the rotating shaft 22. They are integrally connected in a rotating manner.

FIG. 2 is a perspective view of the scattering plate 28. The two blades 32 are fixed to the upper surface of the disc portion 30 at point symmetrical positions, and the tubular boss 34 is attached to the center of the disc portion 30 so as to project upward from the disc portion 30. An opening is also made on the lower surface side of the portion 30. The pin hole 40 is formed in the middle portion of the tubular boss 34. The solid output shaft of the motor 24 and the annular upper end of the rotary shaft 22 are fitted into the tubular boss 34 from above and below, respectively, and are fitted to each other in the tubular boss 34, and pins (not shown) are The rotary shaft 22, the output shaft of the motor 24 and the tubular boss 34 are integrally rotatably coupled by being inserted into the pin hole 40.

FIG. 3 is a perspective view of the blade 32. The blade 32 has a standing portion 36 standing upright from the disc portion 30, and a contact portion 38 which is fixed to the upper surface of the disc portion 30, and the standing portion 36 faces the tubular boss 34 on the upper side. The height is gradually increasing toward.

In FIG. 1, a residual amount gauge sensor 42 detects the residual amount of the chemical liquid in the chemical liquid tank 12, and a liquid detection switch 44 is provided at the bottom of the chemical liquid tank 12 to detect the chemical liquid in the chemical liquid tank 12. The presence or absence of is detected. The cleaning liquid tank 46 is fixed adjacent to the chemical liquid tank 12, and the cleaning liquid (usually water) is charged into the inside through the charging port 48 projecting upward from the side portion of the upper part and is stored therein. The discharge valve 50 is disposed below the bottom of the cleaning liquid tank 46 and discharges the cleaning liquid in the cleaning liquid tank 46 when opened.

The multiple reciprocating pump 52 is provided with a crank shaft 54, and a suction port 56 and a discharge port 58 for sucking and discharging liquid. The crank shaft 54 has the chemical liquid spraying device 10 mounted on a bogie for rice transplanter. In this case, it is driven by the rotational power from the PTO shaft of the rice transplanter truck. The strainer 60 is arranged in the recess 14, and the first switching valve 62 is connected to the strainer 60 via the line 64 and is connected to the bottom of the cleaning liquid tank 46 via the line 66. A pipe line 68 connects the first switching valve 62 to the suction port 56 of the multiple reciprocating pump 52. The first switching valve 62 connects one of the pipelines 64 and 66 to the pipeline 68. The pressure regulating valve 70 is connected to the discharge port 58 of the multiple reciprocating pump 52 and adjusts the pressure of the discharge port 58. The residual liquid in the pressure regulating valve 70 is returned to the chemical liquid tank 12 via a residual liquid pipe line (not shown). The second switching valve 72 connects the discharge side of the pressure regulating valve 70 to the opening / closing cock 74 or the pipeline 76. Each opening / closing cock 74 is manually opened / closed, and a plurality of spray nozzles 78 are divided into groups corresponding to each opening / closing cock 74 and connected to a common opening / closing cock 74 for each group. The chemical solution that is pumped is sprayed onto the paddy field. The two cleaning nozzles 80 are attached to the upper wall 26 of the chemical liquid tank 12 at point-symmetrical positions with the rotating shaft 22 as the center, and direct the cleaning liquid supplied via the pipe line 76 to the splash plate 28. To spray.

The switches 82 and 84 control the power supply from the battery 86 to the motor 24 and the fuel gauge sensor 42, respectively. The switch 82 can be opened and closed both manually and automatically. The controller 88 has a timer 90 built-in, inputs the outputs of the fuel gauge sensor 42 and the liquid detection switch 44, and outputs control signals to the liquid detection switch 44, the second switching valve 72, and the switch 82.

The operation of the embodiment will be described. When spraying the chemical liquid, the operator turns on the switches 82 and 84. As a result, the motor 24 operates, the stirring blade 20 rotates, and the chemical liquid in the chemical liquid tank 12 is stirred by the stirring blade 20. The first switching valve 62 detects the presence of the chemical liquid in the chemical liquid tank 12, and the controller 88 sends a control signal to the first switching valve 62 to connect the pipe line 68 to the pipe line 64. Set to the switching position. As a result, the chemical liquid in the chemical liquid tank 12 is stored in the strainer 60, the pipeline 64, the first switching valve 62, the pipeline 68, the multiple reciprocating pump 52, the pressure regulating valve 70, the second switching valve 72 and the opening / closing cock 74. Is sent to the spray nozzle 78 and is sprayed from the spray nozzle 78.

When the chemical liquid in the chemical liquid tank 12 becomes almost zero due to the end of the spraying work or the like, the liquid detection switch 44 detects this and the controller 88 moves to the position where the pipe line 68 is connected to the pipe line 66. The first switching valve 62 is switched. On the other hand, the timer 90 operates simultaneously with the switching of the first switching valve 62, but the second switching valve 72 opens and closes the pressure regulating valve 70 to the cock 74 side for a certain period of time after switching the first switching valve 62. Connected. As a result, the cleaning liquid in the cleaning liquid tank 46 passes through the pipe line 66, the first switching valve 62, the pipe line 68, the multiple reciprocating pump 52, the pressure regulating valve 70, the second switching valve 72 and the opening / closing cock 74, and the spray nozzle. It is sent to 78 and sprayed from the spray nozzle 78. The cleaning liquid cleans the channel when passing through the channel. During this time, the controller 88 may send a control signal to the switch 82 to automatically turn off the switch 82 to stop the rotation of the stirring blade 20 and the scattering plate 28.

After a lapse of a certain time after the switching of the first switching valve 62, the controller 88 switches the second switching valve 72 based on the measurement time of the timer 90 and connects the pressure regulating valve 70 to the pipe line 76. . As a result, the cleaning liquid is sent to the cleaning nozzle 80 via the pipe line 76, is discharged downward from the cleaning nozzle 80, drops on the disk portion 30 of the rotating scattering plate 28, and collides with the blade 32. Then, it is scattered around. The cleaning liquid, after adhering to the inner surface of the chemical liquid tank 12, drops and is guided to the recess 14. The discharge valve 16 is closed and opened by the controller 88 from the time of switching the first switching valve 62 to the time of switching the second switching valve 72, and the cleaning liquid collected in the recess 14 is discharged to the drain valve 16. Removed from 16.

When the worker comes into contact with or comes into contact with the chemical liquid during the work, the worker immediately opens the discharge valve 50 and discharges the cleaning liquid in the cleaning liquid tank 46 from the discharge valve 50. Clean body contact with chemicals.

In the embodiment, the discharge valve 16 and the second switching valve 72 are also operated by the control signal from the controller 88, but the opening / closing of the discharge valve 16 and the second switching valve 72 The switching may be performed manually by the operator. Although the embodiment has described the cleaning device for the chemical liquid spraying device 10 mounted on the truck for rice transplanter, the cleaning device of the present invention is not limited to this and can be applied to other chemical liquid spraying devices. .

[0022]

[Effect of device]

 According to the first aspect of the present invention, the cleaning liquid tank is provided, and when the chemical liquid in the chemical liquid tank is almost exhausted, the suction side of the pump is switched to the cleaning liquid tank by the first switching valve, so that the cleaning liquid in the cleaning liquid tank is removed. It is inhaled and discharged by the pump and supplied to the spray nozzle and the liquid chemical tank. Therefore, the trouble of moving the chemical spraying device to a water source such as a stream or a water faucet or supplying the cleaning liquid to the chemical tank by a hose for cleaning the chemical spraying device is omitted. It is possible to rationalize and streamline the cleaning work of the chemical liquid spraying device.

In the invention of claim 2, the first switching valve is switched to clean the spray nozzle side with the cleaning liquid, and then the second switching valve switches the discharge side of the pump to the chemical liquid tank by the timer. Since the cleaning liquid is supplied to the chemical liquid tank, the cleaning work can be made more efficient.

According to the third aspect of the present invention, the cleaning liquid is discharged from the cleaning liquid inlet at the upper part of the chemical liquid tank and efficiently scattered to the surroundings by the scattering member that is rotating together with the stirring blade. The cleaning effect on the inner surface of the can be enhanced.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a chemical liquid spraying device equipped with a cleaning device.

FIG. 2 is a perspective view of a scattering plate.

FIG. 3 is a perspective view of blades of a scatter plate.

[Explanation of symbols]

 10 Chemical Liquid Dispersing Device 12 Chemical Liquid Tank 16 Discharge Valve 20 Stirring Blade 22 Rotating Shaft 28 Scattering Plate (Splashing Member) 44 Liquid Detecting Switch (Chemical Liquid Detecting Means) 46 Cleaning Liquid Tank 52 Multiple Reciprocating Pump (Pump) 62 First Switching Valve 72 Second switching valve 78 Spray nozzle 80 Cleaning nozzle (cleaning liquid inlet) 90 Timer

Claims (3)

[Scope of utility model registration request] 1. A chemical liquid tank (12) for storing a chemical liquid, a cleaning liquid tank (46) for storing a cleaning liquid, and the chemical liquid tank (12).
A liquid medicine detecting means (44) for detecting the presence or absence of a liquid medicine in the inside,
It operates based on the detection of the chemical liquid detecting means (44), and the suction side of the pump (52) is connected to the chemical liquid tank (12) and the cleaning liquid tank ( 46), a first switching valve (62), a second switching valve (72) for switching the discharge side of the pump (52) to the spray nozzle (78) side and the chemical liquid tank (12) side, A cleaning device for a chemical liquid spraying device, comprising: a discharge valve (16) for discharging the liquid in the chemical liquid tank (12). 2. The pump (52) wherein the first switching valve (62) is
From the chemical solution tank (12) to the cleaning solution tank (4
The second switching valve (72) is controlled so that the discharge side of the pump (52) can switch the connection from the spray nozzle (78) to the chemical liquid tank (12) side after a fixed time after switching to 6). The cleaning device for a chemical spraying device according to claim 1, further comprising a timer (90). 3. A stirring blade (20) arranged in the chemical liquid tank (12) for stirring the chemical liquid in the chemical liquid tank (12), and is guided from the second switching valve (72). A cleaning liquid inlet (80) for introducing a cleaning liquid into the chemical liquid tank (12), and a rotating shaft (22) of the stirring blade (20) are rotated integrally with the cleaning liquid from the cleaning liquid inlet (80). Scattering member to scatter to the surroundings (28)
The cleaning device for a chemical liquid spraying device according to claim 1 or 2, further comprising: