A safety pipeline system for spraying water from a water spraying vehicle

Abstract

The utility model discloses a kind of water spraying safety pipeline systems of water spraying vehicle, tank is connected with water pump by outlet pipe one, water pump is connected with spray head by outlet pipe two, water level sensor is installed in tank, water level sensor is connected with electromagnetic pneumatic control valve by wire, electromagnetic pneumatic control valve is connected with battery by wire, electromagnetic pneumatic control valve is also connected with air cylinder and pressure relay respectively by air pipe, pressure relay is connected with battery and electromagnetic valve control box respectively by wire, electromagnetic valve control box is connected with electromagnetic ball valve by wire, electromagnetic ball valve is installed on spray head, tank is also provided with backwater pipe, backwater pipe is connected with outlet pipe two, backwater pipe is installed with pressure relief valve and check valve, pressure relief valve is closer to water pump than check valve.The utility model when water level is lower, spray head does not pass, water pump works, water will be sent back to tank, avoid after water is sprayed, damage to water pump, conducive to prolonging the service life of water pump.

Description

Technical Field

[0001] This application relates to water sprinkler trucks, and more particularly to a water sprinkler truck water sprinkler safety pipeline system. Background Technology

[0002] The water pump of a sprinkler truck is generally connected to the engine on the chassis via a power take-off (PTO). When the water pump needs to work, the PTO needs to be activated by a clutch to drive the water pump. Currently, sprinkler trucks are generally operated by one person, meaning the driver is responsible for both driving the vehicle and operating the sprinkler system.

[0003] To prevent the water pump from continuing to operate when the tank is low on water, which could damage the pump, a water level gauge is usually installed on the tank. The driver needs to constantly monitor the level to avoid damaging the pump due to insufficient water, which is detrimental to driver safety and operational efficiency. Sometimes, failure to monitor the level promptly can lead to the pump running dry and breaking down. Some water trucks are also equipped with a water level sensor and alarm. When the water level is low, the alarm alerts the driver, who can then shut off the pump by disengaging the power take-off (PTO) via the clutch. However, if the alarm is malfunctioning or its volume is too low, the driver may not notice the change in water level in time, potentially leading to pump damage. Summary of the Invention

[0004] The purpose of this utility model is to avoid the shortcomings of the prior art and provide a water sprinkler truck water sprinkler safety pipeline system.

[0005] To solve the above problems, the technical solution of this utility model is: a water sprinkler truck water sprinkler safety pipeline system, which includes a tank, a water pump connected to the tank via a water outlet pipe, a water pump connected to a nozzle via a water outlet pipe, a water level sensor installed in the tank, the water level sensor connected to an electromagnetic pneumatic control valve via a wire, the electromagnetic pneumatic control valve connected to a battery via a wire, the electromagnetic pneumatic control valve also connected to an air tank and a pressure relay via an air pipe, the pressure relay connected to a battery and an electromagnetic valve control box via wires, the electromagnetic valve control box connected to an electromagnetic ball valve via a wire, an electromagnetic ball valve installed on the nozzle, a return water pipe provided on the tank, the return water pipe connected to the water outlet pipe, a pressure relief valve and a check valve installed on the return water pipe, the pressure relief valve being closer to the water pump than the check valve.

[0006] As a further improvement of this utility model, the water level sensor is also connected to an alarm, which is installed in the cab.

[0007] The beneficial effects of this utility model are: This utility model is equipped with a return water pipeline. When the water level is low, the nozzle does not pass through. When the water pump is working, the water will be sent back into the tank, which avoids damage to the water pump after all the water is sprayed out and helps to extend the service life of the water pump.

[0008] This utility model has a simple structure and can be used to modify existing sprinkler vehicles, which is conducive to its widespread use. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model; In the diagram: 1. Solenoid valve control box; 2. Pressure relay; 3. Battery; 4. Tank; 5. Water level sensor; 6. Solenoid pneumatic valve; 7. Air tank; 8. Solenoid ball valve; 9. Water outlet pipe 2; 10. Water pump; 11. Water outlet pipe 1; 12. Return water pipe; 13. Check valve; 14. Pressure relief valve; 15. Nozzle. Detailed Implementation

[0010] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0011] exist Figure 1 A water sprinkler truck water sprinkler safety pipeline system comprises a tank 4, a water pump 10 connected to the tank 4 via a first water outlet pipe 11, a nozzle 15 connected to the water pump 10 via a second water outlet pipe 9, a water level sensor 5 installed inside the tank 4, the water level sensor 5 connected to an electromagnetic pneumatic control valve 6 via a wire, the electromagnetic pneumatic control valve 6 connected to a battery 3 via a wire, the electromagnetic pneumatic control valve 6 also connected to an air storage tank 7 and a pressure relay 2 via an air pipe, the pressure relay 2 connected to the battery 3 and an electromagnetic valve control box 1 via a wire, the electromagnetic valve control box 1 connected to an electromagnetic ball valve 8 via a wire, an electromagnetic ball valve 8 installed on the nozzle 15, a return water pipe 12 provided on the tank 4, the return water pipe 12 connected to the second water outlet pipe 9, a pressure relief valve 14 and a one-way valve 13 installed on the return water pipe 12, the pressure relief valve 14 being closer to the water pump 10 than the one-way valve 13.

[0012] In this embodiment, when the water level in the tank is normal, all connecting wires are connected. At this time, the air pipe between the air storage tank 7 and the electromagnetic air control valve 6 is connected. The air pipe between the electromagnetic air control valve 6 and the pressure relay 2 is closed under the control of the electromagnetic air control valve 6. The water pump 10 works, pumping water to the nozzle 15. The electromagnetic ball valve 8 is opened, and the water spraying operation begins.

[0013] When the water level in the tank is lower than that of the water level sensor 5, the water level sensor 5 is no longer in contact with the water in the tank 4. Since there is no connecting medium (water), the wire between the electromagnetic control valve 6 and the water level sensor 5 will no longer be energized. At this time, the gas in the air storage tank 7 pushes the electromagnetic control valve 6 to work. This opens the air pipe between the electromagnetic control valve 6 and the pressure relay 2, further causing the pressure relay 2 to work. The pressure relay 2 cuts off the power to the wire leading to the electromagnetic valve control box 1, thereby cutting off the power to the electromagnetic ball valve 8. The electromagnetic ball valve 8 does not work, and the nozzle 15 cannot continue spraying water. Because the water pump 10 continues to work, the pressure in the outlet pipe 9 increases, causing the pressure relief valve 14 connected to it to open. At this time, the water pumped by the water pump 10 can flow back into the tank through the pressure relief valve 14 and the one-way valve 13, preventing the water level in the tank 4 from decreasing further and avoiding further water reduction that could cause the water pump to run dry and damage it.

[0014] Furthermore, the water level sensor 5 is also connected to an alarm, which is installed in the driver's cab.

[0015] When the water level in tank 4 is lower than that of water level sensor 5, the alarm will sound to remind the driver to shut off water pump 10 in time to avoid damaging the water pump.

[0016] The above description, based on the embodiments shown in the drawings, details the structure, features, and effects of this utility model. However, the above description is only a preferred embodiment of this utility model. It should be noted that the technical features involved in the above embodiments and their preferred methods can be reasonably combined and matched by those skilled in the art to form various equivalent solutions without departing from or changing the design concept and technical effects of this utility model. Therefore, this utility model is not limited to the scope of implementation shown in the drawings. Any changes made in accordance with the concept of this utility model, or modifications to equivalent embodiments, that do not exceed the spirit covered by the specification and drawings, should be within the protection scope of this utility model.

Claims

1. A water sprinkler truck water sprinkler safety pipeline system, comprising a tank (4), wherein the tank (4) is connected to a water pump (10) via a water outlet pipe (11), and the water pump (10) is connected to a nozzle (15) via a water outlet pipe (9), characterized in that: A water level sensor (5) is installed inside the tank (4). The water level sensor (5) is connected to an electromagnetic pneumatic control valve (6) via a wire. The electromagnetic pneumatic control valve (6) is connected to a storage battery (3) via a wire. The electromagnetic pneumatic control valve (6) is also connected to an air storage cylinder (7) and a pressure relay (2) via an air pipe. The pressure relay (2) is connected to a storage battery (3) and an electromagnetic valve control box (1) via a wire. The electromagnetic valve control box (1) is connected to an electromagnetic ball valve (8) via a wire. An electromagnetic ball valve (8) is installed on the nozzle (15). A return water pipe (12) is also provided on the tank (4). The return water pipe (12) is connected to a second water outlet pipe (9). A pressure relief valve (14) and a check valve (13) are installed on the return water pipe (12). The pressure relief valve (14) is closer to the water pump (10) than the check valve (13).

2. The water sprinkler truck water sprinkler safety pipeline system according to claim 1, characterized in that: The water level sensor (5) is also connected to an alarm installed in the cab.

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