Adaptive architecture solids diverter and comminutor

Abstract

A system for comminuting solid waste material including a shredding device disposed within the casing and comprising parallel first and second shredding stacks that include first and second parallel shafts rotatably mounted between an upper shredding device housing and a lower shredding device housing and a rotating screening drum disposed within the casing and mounted between an upper screening drum housing and a lower screening drum housing, the rotating screening drum configured to permit fluid to pass therethrough while capturing solids on an outer surface for delivery to shredding device,an upstream portion of the rotating screening drum disposed upstream of an upstream portion of the shredding device. The upper shredding device housing and the lower screening device housing are separate members from the upper screening drum housing and the lower screening drum housing to permit interchangeability of different sizes of these components to meet system needs.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of U.S. Provisional Patent Application No. 62 / 608,884, filed December 21, 2017, in the United States Patent and Trademark Office, the disclosure of which is incorporated herein by reference in its entirety. Background technique [0003] Pumping stations are required in municipal wastewater collection systems where the topography does not allow strict gravity flow of the sewage to the treatment facility. Soil usually consists of water and soluble organic matter (including human waste), however, it can also contain insoluble items. Examples of insoluble items include: rags, shoes, articles of clothing, condoms, chunks of asphalt, wood chips, coins, wipes, stones, and many other items that are commonly flushed down toilets or down drains by industry and the public. While lift station pumps are usually able to handle soluble organics, clogging can occur when insoluble material is too larg...

AI Technical Summary

Problems solved by technology

[0006] Unfortunately, the fixed nature of the current principle has negative effects: (1) As machine capacity increases, the system becomes bulky and unmanageable; extraction from channels and wet wells becomes cumbersome

For any given drum diameter, the position of the tool stack relative to the drum is fixed, limiting the minimum allowable channel width for installation

Replacement of one or more components requires complete disassembly of the machine, and failure of a given component often occurs throughout the unit

(2) Pump station demand may change over time due to population growth

(3) While the screen drum seal is adjustable to minimize material bypass around the front of the drum, the position of the seal around the face of the drum is fixed

(5) When the tool stack wears out, the entire machine must be removed from the channel for maintenance

The same applies to servicing of the unit, as the tool stacks and drums are housed in a common end housing, which often results in higher than necessary machine repair costs

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