Sediment discharging device used in oilfield sewage sedimentation tank

Abstract

A sediment discharging device used in an oilfield sewage sedimentation tank mainly aims at solving the problem that sediments at the bottom of the oily sewage sedimentation tank cannot be thoroughly discharged out. The sediment discharging device is characterized by further comprising a central collecting unit and at least two dynamic mud collecting pipes, the central collecting unit is formed by connecting a supporting base, a vertical hollow supporting pipe, a sludge collecting cavity and a central rotating body. A bearing is fixed between the top end of the central rotating body and the vertical hollow supporting pipe so as to achieve rotary connection. A conical big gear disc is arranged at the top end of the central rotating body. A main horizontal sewage discharging pipe is connected at the position, higher than the central rotating body, of the vertical hollow supporting pipe. The dynamic mud collecting pipes are symmetrically fixed to two sides of the central rotating body, a plurality of vertical mud sucking pipes are fixed to each dynamic mud collecting pipe at intervals, and the vertical mud sucking pipes are communicated with the inner cavities of the dynamic mud collecting pipes. The head end of a driving shaft is connected with a conical small gear disc, and the conical big gear disc is matched with the conical small gear disc.

Description

technical field [0001] The invention relates to a device for smoothly discharging sediment at the bottom of an oilfield sewage settling tank. Background technique [0002] The settling tank is the key equipment in the oilfield sewage treatment process, and its sediment discharge efficiency is directly related to the water quality index of the settled effluent. In recent years, there have been various problems in the production and operation of the oilfield vertical settling tank sludge discharge technology, among which the problem that the sediment at the bottom of the settling tank is large and cannot be discharged smoothly is particularly prominent. On the one hand, this problem has a great impact on the subsequent filtration stage of the sewage treatment process. The content of suspended solids in the sewage is high, and the quality of the filtered external water is difficult to meet the standard stably; It will increase the load of other structures, affect the separatio...

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Problems solved by technology

[0003] In order to solve the technical problems mentioned in the background technology, the present invention provides a sediment discharge device used in the oil field sewage settling tank, which is suitable for the discharge of sediment at the bottom of the oil field sewage vertical settling tank , which can significantly improve the discharge efficiency of the tank bottom sediment, thereby solving the problem of low sediment discharge efficiency caused by the small service area of ​​the conventional discharge device and the easy blockage of the discharge aperture

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