Lift well automatic opening and closing valve

Abstract

The invention discloses an automatic starting and stopping valve for a hoisting shaft, structurally comprising two major parts, namely a valve seat assembly and a valve assembly. The valve assembly slips from a rotating shaft outlet / inlet formed in an open pothook arranged on the valve seat assembly into an elongated hole of the open pothook through a rotating shaft arranged on the upper end parts of the left and right sides of the valve assembly, so that the valve assembly is hung and attached to the open pothook, and meanwhile, the valve assembly is fitted together with the valve seat assembly. The automatic starting and stopping valve is safe and reliable in use, stable in operation, excellent in performance, low in mechanical fault rate, convenient o dismount and mount, free of power input and capable of realizing automatic starting or stopping by virtue of own conditions.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to an automatic opening and closing valve for a lifting well. Background technique [0002] In the current sewage treatment project, the frame wall of the lifting shaft is cast with steel concrete, showing Shaped structure, consisting of several (usually 2 to 5) such Shaped structure juxtaposed to build, such as Figure 9a shown. The depth of the lifting shaft is about 5-7 meters. A partition wall 104 is set at the water outlet of the lift shaft 102 to separate the fine grid channel 105 . The top surface of the partition wall 104 is about 0.4 to 1 meter lower than the top surface of the wall body 101, forming an overflow port 103, such as Figure 9b shown. The main function of the partition wall 104 is to prevent the sewage in the fine grid canal 105 from flowing back into the lifting well of the unopened lifting pump, and then back to the lifting pump pi...

AI Technical Summary

Problems solved by technology

This liquid level difference causes a large number of shock bubbles to be generated when the sewage falls from the lifting well 102 into the fine grid channel 105, and oxygenation occurs in the sewage, which affects the subsequent process of sewage treatment and increases the production cost of sewage treatment.

[0006] 2. The water discharge height of the lifting well 102 is increased, resulting in an increase in the lifting height of the pump, a decrease in the lifting water volume, and an increase in the load capacity

This will affect the service life of the pump, increase the maintenance cost of the pump, and also cause waste of electricity

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