JPS6143573Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a structure for preventing seizure and damage to a speed spray dispersion pump due to dry operation.

Its features include an electromagnetic clutch installed on the input shaft of the spray pump, and a float installed on the internal bottom of the chemical tank, which transmits power from the prime mover to the speed change box of the vehicle to the input shaft of the other spray pump. It is configured to connect a sensor to detect the amount of remaining liquid and cut off input power to the spray pump to prevent dry operation of the spray pump.

The present invention will be explained below based on the drawings in which the present invention is implemented.

1 is a car frame with an operating frame 15 and a travel lever 1 at the front.
9, and a control section including a seat 14 and the like. 2
0 is a buzzer, and 16 is the main switch of the float sensor 23. Reference numeral 2 indicates tires, and in this embodiment, there are six tires.

Reference numeral 12 denotes a prime mover room, in which the prime mover E and appropriate transmission equipment are installed. P is the dispersion pump in the prime mover room 12
The belt 3 drives the input pulley 26. Reference numeral 28 indicates an electromagnetic clutch, and the annular rotor 32 fixed to the input shaft 36 has a concave portion formed in an annular shape. The clutch stator 34 has a protrusion containing the excitation coil 33 connected to the annular rotor 3.
2, and the base outer portion is fixed in the spray pump P by a fixing fitting 35.

The input pulley 26 is rotatably supported by an input shaft 36 and a bearing, and has a doubly-mounted elastic plate 30 and friction plate 31 attached to its inner periphery. The surface of the friction plate 31 and the front surface of the annular rotor 32 are closely arranged to face each other.

5 is a chemical liquid tank, into which a suction pipe 21 connected to a spray pump P is introduced, and a strainer 22 is installed.
is provided close to the bottom surface 37. A supply pipe 25 communicates with the spray nozzle 10. A pressure regulating valve 24 regulates the pressure of the discharge force of the spray nozzle 10 and returns the remaining liquid to the chemical liquid tank.

A float sensor 23 is installed on the bottom of the chemical liquid tank, and the reference grounding point is set slightly higher than the lower end opening of the strainer 22. 18 is an automatic switch having a B contact and an A contact. This automatic switch 1
8 is connected to the electromagnetic clutch 28 and the buzzer 20,
The power source is connected to a battery 29 via a main switch 16 installed near the seat 14. 6 is a wind barrel and 7 is an axial flow fan. Reference numeral 11 rotates the axial flow fan 7 with a hydraulic motor. 10 is a spray nozzle connected to the supply pipe 25 as described above;
As shown in FIG. 1, a large number of them are arranged in an arc shape at the open end of the air supply port of the wind cylinder 6.

Next, the effect will be explained. When spraying work is carried out in the orchard and the chemical solution in the chemical tank 5 becomes low and the float sensor 23 finally detects it and reaches the reference setting, the B contact of the automatic switch 18 changes to the A contact. In other words, at the b contact, the electromagnetic clutch 28
When in the ON state, the excitation coil 33 attracts the elastic plate 30 and brings the friction plate 31 into close contact with the circular return rotor 32,
Turn on the power that was driving the spray pump P.
Since it is turned off, the input pulley 26 independently rotates the input shaft 36 idly, and the spray pump P stops. At this time, the automatic switch 18 changes to the a contact and operates the buzzer 20.

The continuous switch 17 is mainly used when pumping water into the chemical liquid tank 5, and a jet pump (not shown) is connected to the pumping port 4 of the spray pump P.
Attach it and perform pumping work. Perform this pumping work, mix the chemical solution, and turn off the continuous switch again.
Turn on the float sensor 23 and start spraying.

As described above, a strainer connected to the spray pump by a suction pipe is installed on the internal bottom of the chemical tank, and a float sensor is also installed, and this float sensor is connected to the electromagnetic clutch provided on the input shaft of the spray pump. Since the system is configured to automatically stop the spraying pump by sensing the amount of liquid remaining in the orchard, the operation of the spraying pump is reliably stopped just before the chemical liquid runs out during work in the orchard, thereby preventing accidents such as burning and damage. is prevented. In addition, in the belt transmission from the prime mover that transmits power to the transmission transmission box to the input shaft of the other spray pump, this input shaft is equipped with an electromagnetic clutch, so that the power can be interrupted or interrupted independently of the transmission system for travel. There are practical benefits such as allowing for flexible installation and easy installation on conventional models.

[Brief explanation of the drawing]

FIG. 1 is a partially omitted side view of the present invention, FIG. 2 is a diagram of a dry run prevention system, and FIG. 3 is a sectional view of an electromagnetic clutch. 1...Car frame, 2...Tire, 3...Belt, 4
... Pumping port, 5 ... Chemical tank, 6 ... Wind barrel, 7 ... Axial flow fan, 10 ... Spray nozzle, 1
1...Hydraulic motor, 12...Motor room, 13...
...Agitator, 14...Seat, 15...Operation frame, 16
...Main switch, 17...Continuous switch, 18...
...Automatic switch, 19... Travel lever, 20...
Buzzer, 21... Suction pipe, 22... Strainer, 23... Float sensor, 24... Pressure regulating valve, 25... Supply pipe, 26... Input pulley,
27...Transmission box, 28...Electromagnetic clutch, 29...
... battery, 30 ... elastic plate, 31 ... friction plate, 32 ... circular return rotor, 33 ... excitation coil,
34...Clutch stator, 35...Fixing metal fittings, 36...Input shaft, 37...Bottom surface, P...Spraying pump, E...Motor.

Claims (1)

[Scope of utility model registration request] A prime mover, a chemical liquid tank, and a spray device are mounted on the vehicle frame, and a strainer connected to a spray pump and a suction pipe is installed on the internal bottom of the chemical tank, and a float sensor is installed, and input from the prime mover to the spray pump is installed. A speed sprayer characterized in that a belt is transmitted to a shaft, an electromagnetic clutch is provided on the input shaft, and the electromagnetic clutch is connected to the float sensor.