Water level follow-up sampling system

Abstract

The invention provides a water level follow-up sampling system. The water level follow-up sampling system is composed of a remote control system, an automatic control system and a conveying system; the remote control system is a remote industrial personnel computer; the automatic control system is composed of a PLC control system and a touch screen; the PLC control system includes an Ethernet, a PLC and a communication line; the PLC control system is connected to the remote industrial personnel computer through the Ethernet; the PLC control system is connected to the touch screen through an asynchronous transmission standard interface to complete the artificial operation of the PLC control system; the PLC control system is connected to the conveying system through the communication line, so that the automatic control of the water level follow-up sampling system is achieved; the conveying system is at least composed of a sampler, a water inlet pipe, a self-priming pump, a water outlet pipe, a conveying control system, a hose and a water level transmitter; a pump inlet and a pump outlet are arranged on the self-priming pump, and one end of the water inlet pipe is connected to the pump inlet through a one-way valve.

Description

technical field [0001] The invention relates to the field of automatic control, in particular to a water level follow-up sampling system. Background technique [0002] With the continuous development of urban industry and agriculture and the continuous increase of urban drainage facilities, the monitoring of urban drainage is particularly important. The monitoring of urban drainage is not only to protect the drainage facilities and the health of municipal workers, but also to provide first-hand basic data. A lot of basic work has been done for environmental protection and urban planning, because drainage monitoring has become an indispensable part of urban development and urban management. [0003] At the same time, due to the shortage of water resources caused by various reasons, the country pays special attention to the problem of sewage treatment. However, the construction of sewage treatment plants requires a lot of investment, and the operation and maintenance also cos...

AI Technical Summary

Problems solved by technology

For example, in actual work, it has been found that the discharge of untreated strong acid and strong alkali industrial wastewater directly enters the urban drainage network and pumping station, directly affecting the drainage network, equipment and facilities of the sewage treatment plant, and even making the sewage treatment effect become worse

[0005] At the same time, the existing water sample sampling system uses the floating ball to follow the movement to judge the water intake position, but the water quality of the water sample is relatively dirty, and there are many dirt on the surface of the water body. When the dirt in the water will adhere to the surface of the floating ball, it will affect The floating effect of the floating ball; at the same time, because the floating ball is floating on the surface of the water body, it must be able to rise and fall freely with the water level, so the floating ball cannot be fixed. The ball swings too much with the current and is damaged

At the same time, the swing hose connected to the float will also be sucked into the grille due to too fast water flow, which will affect the operation of other equipment

In addition, the water inlet pipe of the sampler is a 1-inch steel wire winding pipe. In order to reliably suspend the sampling pipe, it is conservatively estimated that a stainless steel float with a diameter of 30cm is required. The installation of such a large-volume float can easily interfere with the operation of other equipment; secondly, In order not to interfere with the operation of other equipment, it is necessary to fix an installation space for the floating ball, that is to say, a rectangular grille must be installed from top to bottom along the pool wall to isolate the floating ball in the grille, and the manufacturing and installation costs of the grille are relatively high. High, the installation holes are large, it is difficult to find the allowable position; and once the float ball traction water inlet is fixed, the sampling water level cannot be changed at any time during use, and multi-position sampling cannot be performed

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