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Modular vent assembly for a sewage pumping station

a module and sewage technology, applied in ventilation systems, lighting and heating apparatus, heating types, etc., can solve the problems of difficult maintenance of filters, difficult to gain access to charcoal, and difficulty in removing sewage from the sewag

Inactive Publication Date: 2007-03-29
STROCK RANDALL L
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010] It is another object to provide a modular vent and filter assembly that allows easy maintenance and replacement of a filter cartridge rather than loose charcoal or a large drum of charcoal typically exceeding 225 lbs.
[0011] It is another object to provide a modular vent and filter assembly that can be easily fabricated of either molded plastic or formed stainless steel parts.
[0012] It is still another object to provide a modular vent and filter assembly that does not accumulate water vapor and is not susceptible to blockage or freezing.
[0013] It is still another object to provide a modular vent and filter assembly that can be easily retrofit to most any existing pump station exhaust vent.
[0018] All embodiments provide easy maintenance and replacement of the vent assemblies and carbon therein. Moreover, the vent assemblies do not accumulate water vapor and are not susceptible to blockage or freezing. The present vent assemblies may be easily retrofit to most any existing pump station exhaust vent.

Problems solved by technology

Of course, the emissions from such pumping equipment can be a problem since they may be volatile, toxic, or at least odiforous.
It is difficult to maintain these filters 130 for a variety of reasons.
For one, the drums are sealed and it is difficult to gain access to the charcoal to determine whether the charcoal is saturated and in need of replacement.
This is an exceedingly difficult process owing to the size and weight of the drum and contents.
Moreover, when the air temperature falls below the freezing point accumulated water vapor in the U-trap may freeze to the point where the sewer vent pipe is completely blocked off.
A complete blockage of the vent pipe can result in sewer gas building to explosive levels within the structure(s) .
. . a very undesirable and sometimes dangerous condition.

Method used

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  • Modular vent assembly for a sewage pumping station
  • Modular vent assembly for a sewage pumping station
  • Modular vent assembly for a sewage pumping station

Examples

Experimental program
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first embodiment

[0030]FIG. 2 is a perspective view of a basic modular vent assembly 2 which can be used with or without a fan assembly to provide ventilation without odor control. The basic modular vent assembly 2 generally comprises a cap 10, and a main conduit 20 secured by base 30 to the concrete foundation of an existing pump station. For example, most existing pump stations will have a precast concrete top slab separating the underground pumping equipment from either the outside atmosphere or the control structure, and in the event of a control structure, a vent system leading up and out through an aperture in the roof of the control structure. The illustrated main conduit 20 is friction fit into the annular base 30, which mounts atop the aperture leading up and out through the precast concrete slab-foundation. The annular base 30 may be secured to the precast concrete slab-foundation by concrete expansion anchors as shown. The cap 10 is a concave hood that fits down over a main conduit 20 as ...

embodiment 60

[0036]FIG. 6 is a side cross-section of an embodiment 60 that employs the modular vent assembly as in FIGS. 1-3 with modified ductwork and supports for powered operation with a blower. In this embodiment, the main conduit 20 and base 30 of the modular vent assembly 2 are installed as described above but are connected to a conventional blower or fan assembly 80. The output of blower 80 is connected to a tubular length of neoprene 84 or other elastic material by an O-ring 82. The other side of connector 84 is connected by an O-ring 82 to the laterally-protruding stem 90 that connects to main conduit 20. In this embodiment, powering of the blower or fan assembly 80 will induct the gases through the modular vent assembly 2. The stem of T-junction conduit 90 is connected directly into the modular vent assembly 2 as described above in regard to FIGS. 2-5.

second embodiment

[0037]FIG. 7 is a perspective view of a modular vent assembly 100 which can likewise be used with or without a fan assembly to provide ventilation, in this case with odor control. The modular vent assembly 100 generally comprises a stainless drum 110 with side handles 107 attached thereto, and a hinged stainless cover 105 seated atop. The modular vent assembly 100 is seated atop a main conduit 20 as above which is secured by a like base 30 to the concrete foundation of an existing pump station as described previously. The cover 105 is a concave hood that is pivoted on one side to the upper lip of drum 110 and which pivots down over the drum 110, where is fastened in place by a locking latch 109. The locking latch 109 is preferably a latch that draws a constriction band around the cover 105 to secure it to the drum 110, latch 109 being lockable by means of a cotter pin inserted there through.

[0038]FIGS. 8 and 9 are a top perspective view and a bottom perspective view, respectively, o...

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PUM

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Abstract

Improved modular vent assemblies for filtering and venting gases from a sewage pumping substation. A basic non-filtering vent assembly comprises a concave plastic hood with an internal enclosure, and a stop-ring mounted in the internal enclosure. A rigid grate is secured atop the main conduit, the grate comprising a rigid circular plate with evenly-spaced apertures that forms a filter screen. A plurality of holes about the perimeter of the cap allow it to be secured to the grate by insertion of detent-pins. An enhanced filtering vent assembly comprises a stainless drum with a hinged stainless cover seated atop. The drum is equipped with a central conduit positioned coaxially with the drum by a plurality of louvers. The conduit extends downward past the louvers through a rigid grate (as above) which in this case supports a fill of activated carbon material within the drum. Powered variation of both of the foregoing embodiments are also disclosed in which a blower motor is connected to the modular vent assemblies for inducting sewer gas there through. All the foregoing embodiments provide easy maintenance and replacement of the filter cartridge, do not accumulate water vapor, are not susceptible to blockage or freezing, and may be easily retrofit to most any existing pump station exhaust vent.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] The present application derives priority from U.S. provisional application No. 60 / 721,357 filed Sep. 28, 2005.BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to sewage pumping stations and, more particularly, to an improved modular vent assembly for a sewage pumping station that facilitates cleaning and charging with activated charcoal for filtering of fumes. [0004] 2. Description of the Background [0005] To maintain the aesthetics of rural neighborhoods, pumping equipment for sewage pumping stations is typically submerged in a precast concrete enclosure residing in the ground or beneath a precast concrete building within which the controls may be accessed. FIG. 1 is a perspective view of a typical precast concrete enclosure residing in the ground. Of course, the emissions from such pumping equipment can be a problem since they may be volatile, toxic, or at least odiforous. Consequently,...

Claims

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Application Information

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IPC IPC(8): F24F7/06
CPCE03F5/08
Inventor STROCK, RANDALL L.
Owner STROCK RANDALL L