Waste water treatment filter including a waste water level control alert device

• US 6,129,837 A
• Filed: 11/06/1998
• Issued: 10/10/2000
• Est. Priority Date: 11/06/1998
• Status: Expired due to Term

• Current Assignee: Zabel Industries International Limited
• Original Assignee: Harry L. Nurse Jr
• Inventors: Nurse, Harry L. Jr.
• Primary Examiner(s): Walker, W. L.
• Assistant Examiner(s): SORKIN, DAVID L
• Application Number:
  US09/187,765
• Time in Patent Office: 704 Days
• Field of Search: 210/532.1, 210/532.2, 210/86, 210/121, 210/104, 210/237, 210/238, 73/305-308, 73/866.5, 116/110
• US Class Current: 210/86
• CPC Class Codes: B01D 2201/287 Filtering elements with a vertical or inclined rotation or symmetry axis
• CPC Class Codes: B01D 29/35 arranged for outward flow filtration
• CPC Class Codes: B01D 29/605 by level measuring
• CPC Class Codes: B01D 35/0276 Filtering elements with a vertical rotation or symmetry axis mounted on tanks or reservoirs
• CPC Class Codes: B01D 35/143 Filter condition indicators

Abstract

A filtration device for a waste water treatment tank is provided with a level alert device positioned within the filter to provide a warning or alarm when the filter becomes plugged. The level alarm device is positioned so that as the waste water level gets beyond a certain preselected limit an alarm will actuate a micro-switch which is in actuating relation with an alarm device outside the waste water treatment tank.

Claims

1. In a combination of a filter device with a high level alert device mounted in a waste water treatment tank, the improvement comprising:

a) mounting means for mounting said high level alert device to said filter device in an unfiltered waste water side of said filter device, said mounting means being integral with said filter device;

b) said high level alert device having a floating lower end mounted within a lower housing portion of said high level alert device, said lower housing portion having an inverted conical lower end with a pair of outwardly extending tapered locking lugs spaced radially around said conical end, said high level alert device having an upper housing portion of a greater diameter than said lower housing portion, said upper housing portion being in actuating communication with an alarm device;

c) said mounting means having an opening therein to receive said level alert device therethrough, said mounting means having vertically extending lug receiving grooves extending the vertical thickness of said mounting means in mating relation with said locking lugs, said mounting means having a bottom circumscribing said opening with a pair of lug locking slots spaced radially from said lug receiving grooves, said lug locking slots having a depth less than the thickness of said mounting means.

2. The combination of claim 1, wherein said lugs are spaced on opposite sides of said conical end, said lug receiving grooves being spaced on opposite sides of said opening in a handle and said lug locking slots being on opposite sides of said opening in said handle and 90°

from said lug receiving grooves.

3. The combination of claim 1, said mounting means being a handle of a filter element.

4. In combination with a waste water disposal tank having a waste water tank inlet and a waste water outlet, a filtration system and a high level alert device comprising:

a) a filter housing having an open bottom in flow communication with said tank inlet and a housing outlet in flow communication with said tank outlet;

b) a filter element having a central opening and an open bottom mounted in said filter housing and positioned so that waste water flows upward through said filter element, said filter element having a sidewall with openings therein of preselected size, said filter element having a handle along the top of said filter element; and

,

c) said high level alert device extending through the top of said filter element at a preselected position within said central opening, the high level alert device having a floating lower end mounted within a lower housing portion of said high level alert device, said lower housing portion having an inverted conical lower end with a pair of outwardly extending tapered locking lugs spaced radially around said conical end, said high level alert device having an upper housing portion of a diameter greater than said lower housing portion, said upper housing portion being in actuating communication with an alarm device;

said handle having an opening therein to receive said high level alert device therethrough, said handle having vertically extending lug receiving grooves extending the vertical thickness of said handle in mating relation with said locking lug, said handle having a bottom circumscribing said opening in said handle with a pair of lug locking slots spaced radially from said lug receiving grooves, said lug locking slots having a death less than the thickness of said handle.

5. The combination of claim 4 wherein said lugs are spaced on opposite sides of said conical end, said lug receiving grooves being spaced on opposite sides of said opening in said handle and said lug locking slots being on opposite sides of said opening in said handle and 90°

from said lug receiving grooves.