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Dredging equipment and sewage circulation control system, control method and device thereof

A sewage circulation and hydraulic control system technology, applied in the field of sanitation machinery, can solve the problems of increasing the cleaning frequency of clean water tanks, high maintenance costs, and the system's inability to self-adaptively adjust the water output, so as to reduce the number of times of water addition and sludge transfer, which is practical Improvement of performance and economy, realizing the effect of continuous operation of equipment

Active Publication Date: 2021-12-31
JIANGSU XCMG CONSTR MASCH RES INST LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] First, the traditional combined dredging vehicle is equipped with a fresh water tank and a sewage tank at the same time. Due to the load limit of the vehicle, the volume is limited, resulting in short operation time, many times of transfer, low efficiency and high operation cost.
[0005] Second, the sewage circulating filtrate enters the clean water tank, which will easily cause pollution of the clean water tank, increase the cleaning frequency of the clean water tank, and increase maintenance costs
[0006] Third, when the liquid level in the sewage collection tank is different and the sludge content of the sewage is different, the system cannot self-adaptively adjust the water output, and there is a risk of insufficient water intake of the pump, continuous operation is not possible, the work efficiency is low, and there are potential safety hazards

Method used

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  • Dredging equipment and sewage circulation control system, control method and device thereof
  • Dredging equipment and sewage circulation control system, control method and device thereof
  • Dredging equipment and sewage circulation control system, control method and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A sewage circulation hydraulic control system, comprising:

[0047] The electromagnetic reversing valve I11 is configured to control the switch and forward / reverse rotation of the motor 13 of the rotary filter device;

[0048] The solenoid reversing valve II15 is configured to control the switch of the booster water pump motor 14;

[0049] The electric proportional speed regulating valve 16 is configured to regulate the speed of the booster water pump motor 14 .

[0050] In some embodiments, such as figure 2 As shown, the sewage circulation hydraulic control system further includes: a two-way buffer valve 12 configured to prevent the rotary filter motor 13 from sucking air when the rotary filter motor 13 starts and stops.

[0051] In some embodiments, such as figure 2 As shown, the sewage circulation hydraulic control system further includes: a hydraulic pump 9, a first overflow valve 10, and a second overflow valve 17;

[0052] The S port of the hydraulic pump 9 ...

Embodiment 2

[0055] A dredging device, comprising: a sewage collection tank 1, a rotary filter device 3, a booster water pump 4, a three-way reversing valve 5, a discharge pool 7, a high-pressure water pump 8, and the above-mentioned sewage circulation hydraulic control system; figure 1 as shown,

[0056] The rotary filter device 3 is installed in the sewage collection tank 1, and is used for rotary filtration of the sewage in the sewage collection tank 1; the filtered water enters the booster water pump 4, and the outlet of the booster water pump 4 is respectively connected to the discharge through the three-way reversing valve 5 Pool 6, water inlet of high-pressure water pump 7, the outlet of said high-pressure water pump 7 is connected to the inlet of sewage collection tank 1 through the sewer pipe; and the switching between the sewage circulation mode and the sewage discharge mode is realized through the three-way reversing valve 5;

[0057] The rotary filtering device 3 is driven by a...

Embodiment 3

[0061] A dredging equipment control method, comprising:

[0062] Obtain liquid level information in the sewage collection tank;

[0063] According to the liquid level information in the sewage collection tank, it is judged whether the set liquid level is reached in the sewage collection tank;

[0064] In response to judging that the set liquid level has not been reached in the sewage collection tank, the mud-water mixture is sucked into the sewage collection tank 1;

[0065] Or, in response to judging that the set liquid level is reached in the sewage collection tank, an instruction is issued to control the operation of the rotary filter motor, forward / reverse rotation and booster water pump motor 14;

[0066] Determine the working mode, and switch between the sewage circulation mode and sewage discharge mode through the three-way reversing valve:

[0067] Sewage circulation mode, control the three-way reversing valve to make the pipeline between the booster water pump and t...

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Abstract

The invention discloses dredging equipment and a sewage circulation control system, control method and device thereof. A clear water tank is omitted, the volume of a sewage collection tank is greatly increased, and the sludge bearing capacity is improved. Through free switching between two modes of sewage recycling and sewage discharging, the continuous operation time of the equipment and the effective sludge bearing capacity of the sludge collecting tank can be effectively prolonged, the transfer frequency is reduced, and the operation cost is reduced. By detecting the liquid level in the sewage collecting tank and the pressure at a water inlet of a water pump and adaptively adjusting the rotating speed of a rotary filtering device and a booster water pump, the water pressure at a water outlet of the booster water pump reaches a certain threshold value when different liquid levels and sewage mud contents in the sewage collecting tank are ensured, and the problems of air suction and service life reduction of the water pump caused by water inlet insufficiency of the high-pressure water pump are avoided; and the working efficiency and the safety are improved.

Description

technical field [0001] The invention belongs to the technical field of sanitation machinery, and in particular relates to dredging equipment and its sewage circulation control system, control method and device. Background technique [0002] With the rapid development of urbanization in China, more and more municipal pipelines have entered the aging stage, and more and more dredging and maintenance equipment are needed. Traditional combined dredging vehicles are generally equipped with clean water tanks and sewage tanks at the same time. The high-pressure water pumps and high-pressure water jets generated by various nozzles are used to clean the pipeline dirt, and the dirt is collected into the sewage tanks for transfer through vacuum pumps or fans. However, limited by the load of the vehicle, the volume of the clean water tank is relatively small, the volume of the sewage collection tank is limited, the dredging operation time is short, and the sewage collection tank carries...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E03F7/10E03F5/14E03F5/22E03F5/26E03F5/10
CPCE03F7/10E03F7/106E03F5/14E03F5/22E03F5/26E03F5/10
Inventor 韩松峰郑文张洪涛孙国保
Owner JIANGSU XCMG CONSTR MASCH RES INST LTD
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