CN211948825U - Automatic control device of sewage suction truck - Google Patents

Abstract

The utility model relates to a sanitation vehicle technical field, concretely relates to soil pick-up car automatic control device. The utility model provides a how prevention inhale excrement, soil pick-up car have the condition of anti-overflow device inefficacy in the use, on the problem of the work degree of difficulty of reduction operating personnel simultaneously, the utility model provides a inhale excrement, soil pick-up car automatic control device, including control system, the jar body, anti-overflow device, pressure sensor, level sensor, vacuum generator, electromagnetic valve, imbibition head and rubber tube, anti-overflow device, pressure sensor and imbibition head are installed on the upper portion of the jar body, and electromagnetic valve installs on the imbibition head, and the rubber tube links to each other with the imbibition head, and anti-overflow device passes through the pipeline and links to each other with vacuum generator, and control system basis the signal control vacuum generator that level sensor fed back stops, electromagnetic valve's switching reduces operating personnel's the work degree of difficulty, improves work efficiency.

Description

Automatic control device of sewage suction truck

Technical Field

The utility model relates to a sanitation vehicle technical field, concretely relates to soil pick-up car automatic control device.

Background

The excrement and sewage suction truck is a sanitation truck for transferring, cleaning and transporting excrement, sludge and sewage and avoiding secondary pollution. The working principle is that air in the vehicle-mounted tank body is continuously discharged under the work of the vacuum pump, the suction rubber tube is always immersed in the sewage pool, the air pressure in the tank body is lower and lower, and sewage, liquid dung and the like are sucked into the tank body under the action of atmospheric pressure. At present, the excrement and sewage suction truck is widely applied to urban municipal sewage cleaning and sewage treatment of large-scale industrial and mining enterprises.

Chinese patent document CN104405033A, "an overflow preventing device and an overflow preventing method for a dung suction truck", discloses an overflow preventing device for a dung suction truck, which prevents potential safety hazards caused by excessive sewage suction of the dung suction truck by controlling the on-off of a vacuum pump by arranging an overflow preventing valve in a tank body of the dung suction truck. However, in the practical application process, the phenomenon that the top anti-overflow device is blocked and fails due to the fact that the liquid level in the excrement and sewage suction tank body is high sometimes occurs.

Meanwhile, after the excrement and sewage suction vehicle finishes one-time suction operation, sewage can stay in the excrement suction rubber pipe due to the fact that air pressure difference exists between the inside and the outside of the suction rubber pipe, in order to prevent backflow of sewage in the tank body caused by siphoning, environmental sanitation operators need to firstly pull out the suction rubber pipe from a sewage pool, and can pull the four-way valve in the air path system to a middle position after introducing air into the excrement suction pipe to destroy siphoning, the suction rubber pipe full of sewage is heavy, and operation difficulty of the environmental sanitation operators is increased.

In summary, the anti-overflow device of the excrement and sewage suction truck fails during use, and when the suction operation is completed, the difficulty of operation of an operator is high due to the air path control problem, so that the development of the automatic control device of the sewage suction truck is a technical problem to be solved urgently.

Disclosure of Invention

The utility model aims to solve the technical problem that how prevention inhales excrement, soil pick-up car has the condition that anti-overflow stream device became invalid in the use, reduces operating personnel's the work degree of difficulty simultaneously.

The technical proposal of the utility model for solving the technical problems is that an automatic control device of a sewage suction truck is provided, which comprises a control system, an anti-overflow device, a pressure sensor, a liquid level sensor and a vacuum generating device, the anti-overflow device is arranged on the upper portion of a vehicle-mounted tank body of the excrement and sewage suction vehicle, the electromagnetic air valve is arranged on the liquid suction head, the rubber tube is connected with the liquid suction head, the vacuum generation device is arranged on the chassis of the excrement and sewage suction vehicle, the anti-overflow device is connected with the vacuum generation device through a pipeline, the liquid level sensors are a plurality in number and are respectively arranged on the upper portion of the tank body at intervals, signals of the pressure sensor and the liquid level sensor are transmitted to the control system through a circuit, the control system controls the electromagnetic air valve and the vacuum generation device through the circuit, and a buzzer is arranged in the control system.

Furthermore, the vacuum generating device comprises a plurality of vacuum pumps and a driving motor, the vacuum pumps are connected through electromagnetic clutches, the vacuum pumps are connected with the driving motor through electromagnetic clutches, and signals sent by the control system are transmitted to the electromagnetic clutches through lines.

The utility model has the advantages that: 1) the control system controls the starting and stopping of the vacuum generating device, the opening and closing of the electromagnetic air valve and the on and off of the buzzer according to the signals fed back by the liquid level sensor, so that the situations that sewage in the tank body enters the vacuum pump due to the failure of the anti-overflow device at the top of the tank body, the vacuum pump is blocked and damaged and the like are prevented, and the use reliability of the vehicle is improved; 2) the arrangement of the plurality of liquid level sensors prevents false operation caused by dirt sticking among the liquid level sensors; 3) a pressure sensor is arranged for detecting the vacuum degree in the tank body, and when the vacuum degree is high, the vacuum generating device is stopped; when the vacuum degree is low, a vacuum generating device is started, so that the working energy consumption is reduced; 4) when one-time suction work is finished, the control system controls the electromagnetic air valve to be opened, the air pressure difference between the inside and the outside of the liquid suction head and the rubber tube is eliminated, air enters the liquid suction head, sewage in the rubber tube flows back to the sewage tank, the rubber tube is easy to pull out from the sewage tank, and the labor intensity of sanitation operators is reduced.

Drawings

Fig. 1 is a schematic structural view of an automatic control device of a dung and dirt suction vehicle.

The reference numbers, control system 1, bee calling organ 11, controller 12, jar body 2, anti-overflow device 21, imbibition head 23, rubber tube 24, level sensor 3, pressure sensor 4, electromagnetism pneumatic valve assembly 5, vacuum pump 6, vacuum pump 7, driving motor 8, electromagnetic clutch 9, sewage pond 10.

Detailed Description

The detailed description of the embodiments of the automatic control device of the sewage suction truck according to the present invention with reference to the accompanying drawings is as follows:

as shown in figure 1, the automatic control device of the excrement and sewage suction vehicle comprises a control system 1, a liquid level sensor 3, a pressure sensor 4, an electromagnetic air valve 5, a vacuum generating device, an anti-overflow device 21, a liquid suction head 23 and a rubber tube 24. The overflow-proof device 21, the pressure sensor 4 and the liquid suction head 23 are arranged on the upper part of the vehicle-mounted tank body 2 of the excrement and sewage suction vehicle (excrement and sewage are stored in the vehicle-mounted tank body 2), the electromagnetic air valve 5 is arranged on the liquid suction head 23, and the rubber pipe 24 is connected with the liquid suction head 23 through a hoop. The vacuum generating device is arranged on a chassis of the excrement and sewage suction truck and comprises two vacuum pumps 6 and 7 and a driving motor 8; the overflow preventing device 21 is connected with the vacuum pump 6 and the vacuum pump 7 through pipelines, the vacuum pump 6 is connected with the vacuum pump 7 through the electromagnetic clutch 9, and the vacuum pump 6, the vacuum pump 7 and the driving motor 8 are connected through the electromagnetic clutch 9. 2 level sensor 3 are installed on the upper portion of jar body 2 at a certain distance apart respectively, and pressure sensor 4 and level sensor 3's signal pass through the circuit and transmit control system 1, and control system 1 is provided with bee calling organ 11 and controller 12 through circuit control electromagnetism pneumatic valve 5 and electromagnetic clutch 9 in the control system 1.

When the sewage suction device works, after the power supply is switched on, the driving motor 8 is turned on to start the switch, the control system 1 is started, the electromagnetic clutch 9 is electrified to drive the vacuum pump 6 and the vacuum pump 7, and sewage in the sewage pool 10 is sucked. When the pressure sensor 4 detects that the vacuum degree in the tank body 2 reaches a designed vacuum degree value, the controller 1 controls the electromagnetic clutch 9 of the vacuum pump 7 to be powered off, the vacuum pump 7 stops working, and the vacuum pump 6 continues working; when the pressure sensor 4 detects that the vacuum degree in the tank body 2 reaches the maximum safe vacuum degree value, the controller 1 controls all the electromagnetic clutches 9 to be powered off, the vacuum pump 7 stops working, the vacuum pump 6 stops working, and at the moment, the system does not work with the vacuum pump. When the liquid level in the tank body 2 reaches the position of the lower end of the liquid level sensor 3, the liquid level sensor 3 provides an electric signal to be fed back to the control system 1, so that the electromagnetic clutch 9 is driven to be powered off, and the vacuum pump 6 and the vacuum pump 7 stop working, so that the situations of blockage, damage and the like caused by the fact that sewage enters the vacuum pump 6 and the vacuum pump 7 due to the failure of the anti-overflow device 21 are prevented, and an alarm is sent by the buzzer 11 to prompt an operator that the work is finished; when the sewage treatment device is stopped, the electromagnetic air valve 5 is opened to enable air to enter the liquid suction head 23, and after the difference between the air pressure inside and outside the liquid suction head 23 and the air pressure inside and outside the rubber tube 24 is eliminated, sewage in the rubber tube 24 flows back to the sewage tank 10, so that the rubber tube 24 is easy to pull out from the sewage tank 10, and the labor intensity of sanitation operators is reduced.

The present invention is not limited to the specific technical solutions described in the above embodiments, and other embodiments can be provided in addition to the above embodiments. It should be understood by those skilled in the art that any modifications, equivalent substitutions, improvements and the like that are made within the spirit and principle of the present invention are within the scope of the present invention.

Claims (2)

1. The utility model provides a soil pick-up car automatic control device, includes control system, anti-overflow flows device, pressure sensor, level sensor, vacuum generating device, electromagnetism pneumatic valve, imbibition head and rubber tube, its characterized in that: the anti-overflow device, pressure sensor with the imbibition head is installed the upper portion of the on-vehicle jar of body of car, the electromagnetism pneumatic valve is installed the imbibition head is last, the rubber tube with the imbibition head links to each other, vacuum generator installs on the chassis of car, the anti-overflow device pass through the pipeline with vacuum generator links to each other, level sensor's a plurality of and be separated by the certain distance respectively and install the upper portion of the jar of body, pressure sensor with level sensor's signal passes through the circuit and transmits for control system, control system passes through circuit control the electromagnetism pneumatic valve with vacuum generator, be provided with bee calling organ in the control system.

2. The automatic control device of a sewage suction truck as claimed in claim 1, wherein the vacuum generating device comprises a plurality of vacuum pumps and a driving motor, the vacuum pumps are connected through electromagnetic clutches, the vacuum pumps are connected with the driving motor through the electromagnetic clutches, and signals sent by the control system are transmitted to the electromagnetic clutches through lines.

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