A rolling mill low-pressure turbid water pipe end sewage device

Abstract

The utility model relates to metallurgical industry high -speed wire rod production line water treatment technical field, especially a kind of rolling mill low-pressure turbid ring water pipeline end sewage device. The problems such as cooling nozzle blockage caused by impurity accumulation in the end of pipeline, large roller wear, production interruption and the like in the prior art are solved. It includes: pneumatic butterfly valve, set in the end of low-pressure turbid ring water pipeline, and pneumatic butterfly valve is connected with compressed air driving pipeline, and solenoid valve for controlling the on-off of gas source is arranged on pipeline;Sewage pipeline, one end is connected with the outlet end of pneumatic butterfly valve, and one end extends to flushing channel, for sewage wastewater is introduced to flushing channel recycling;Pressure detection transmitter, set on low-pressure turbid ring water pipeline, for detecting pipeline pressure;PLC controller, electrically connected with pressure detection transmitter and pneumatic butterfly valve respectively, is configured as preset time program control solenoid valve on-off, to drive pneumatic butterfly valve opening and closing, realize scheduled sewage.

Claims

1. A sewage discharge device at the end of a low-pressure turbid circulating water pipeline in a rolling mill, characterized in that, include: A pneumatic butterfly valve (1) is installed at the end of a low-pressure turbid water pipeline, and the pneumatic butterfly valve (1) is connected to a compressed air drive pipeline (2), and a solenoid valve (201) for controlling the on / off of the air source is installed on the compressed air drive pipeline (2). Sewage pipe (3), one end of which is connected to the outlet end of the pneumatic butterfly valve (1), and one end of which extends to the slag flushing ditch to guide sewage to the slag flushing ditch for recycling; Pressure detection transmitter (4), the pressure detection transmitter (4) is installed on the low-pressure turbid water pipeline and is used to detect the pressure of the low-pressure turbid water pipeline; The PLC controller (5) is electrically connected to the pressure transmitter (4) and the pneumatic butterfly valve (1) respectively. The PLC controller (5) is configured to control the solenoid valve (201) to open and close according to a preset time program, so as to drive the pneumatic butterfly valve (1) to open and close, thereby realizing timed sewage discharge.

2. The end-of-pipe sewage discharge device for the low-pressure turbid circulating water pipeline of the rolling mill according to claim 1, characterized in that, The pneumatic butterfly valve (1) is connected to the end of the low-pressure turbid water pipeline via a flange.

3. The end-of-pipe sewage discharge device for the low-pressure turbid circulating water pipeline of the rolling mill according to claim 1, characterized in that, The preset time program is set to open the pneumatic butterfly valve (1) at a fixed time every day, with a single opening duration of 2 to 5 minutes.

4. The end-of-pipe sewage discharge device for the low-pressure turbid circulating water pipeline of the rolling mill according to claim 1, characterized in that, A pressure sensor (202) is provided on the compressed air drive pipeline (2). The pressure sensor (202) is connected to the PLC controller (5) for monitoring the compressed air pressure.

5. The end-of-pipe sewage discharge device for the low-pressure turbid circulating water pipeline of the rolling mill according to claim 1, characterized in that, The inner diameter of the sewage pipe (3) shall not be less than the inner diameter of the end of the low-pressure turbid circulating water pipe.

6. The end-of-pipe sewage discharge device for the low-pressure turbid circulating water pipeline of the rolling mill according to claim 1, characterized in that, The pressure transmitter (4) is fixed to the top of the horizontal section of the low-pressure turbid water pipeline by welding, and its detection end extends into the pipeline to a depth of 1 / 3 to 1 / 2 of the pipeline's inner diameter.

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