Fine grid and construction method of rotational flow grit chamber

Abstract

The invention discloses a fine grid and a construction method of a rotational flow grit chamber, and relates to the technical field of rotational flow grit chambers. The technical problem that the service lifetime of a common rotational flow grit chamber is difficult to guarantee is solved. The key points of the technical scheme are as follows: a Z6 concrete reinforcing agent is added into concrete to improve the compressive strength and the impact strength of the concrete and the rebound strength of a wall surface; in the construction process, a suspended formwork and a combined steel formwork are built; concrete can be poured into inner cavities of a water inlet channel, the grit chamber and a water outlet channel at the same time so that overall stability of a concrete main body bearingstructure can be guaranteed; shear keys enable the steel bars in the concrete main body and the main body to generate mutual opposite tension, so that the overall strength of the concrete main body is further improved, and the effects of effectively guaranteeing the normal service lifetime of the grit chamber and guaranteeing the gravel screening effect can be achieved.

Description

technical field [0001] The invention relates to the technical field of swirling flow grit chambers, more specifically, it relates to a construction method of a fine grid and a swirling flow grit chamber. Background technique [0002] At present, the grit chamber is an infrastructure facility used to remove relatively dense inorganic particles (such as hard sediment particles) in the liquid, thereby reducing the friction loss caused by the liquid discharge to the water pump and the inner wall of the pipeline. The internal structures of different grit chambers are different, and the flow directions of the guided liquids are also different, which are mainly divided into four types: flat flow type, vertical flow type, aeration type and swirling flow type. [0003] Among them, the swirling flow grit chamber uses the mechanical force of external equipment to control the flow state and flow rate of the liquid. It is generally used with a fine grid, and the small grid pitch of the f...

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Problems solved by technology

[0005] The above-mentioned existing technical solutions have the following defects: the inner wall of the ordinary grit chamber lacks a solidification structure, and it is easy to produce pits and cracks of different sizes under the frequent impact of liquid and gravel, which greatly affects the grit chamber. The normal service life and reduce its sieving effect on gravel, so it needs to be improved

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