David Brin Tidwell
Engineering in Monroe, LA
License number
Louisiana EI.0011615
Issued Date
Jan 1, 1900
Category
Civil Engineer
Address
Address
PO Box 4342, Monroe, LA 71211
Professional information
Method To Assemble Wash Liquid Spray Nozzles For A Pulp Mat
US Patent:
8181888, May 22, 2012
Filed:
May 3, 2010
Appl. No.:
12/772650
Inventors:
Todd S. Grace - Alpharetta GA, US
David Hollis Gordy - Monroe LA, US
David Brin Tidwell - Monroe LA, US
David Hollis Gordy - Monroe LA, US
David Brin Tidwell - Monroe LA, US
Assignee:
Andritz Inc. - Glens Falls NY
International Classification:
B05B 17/00
US Classification:
239 1, 239550, 239556
Abstract:
A method to assemble a nozzle-fastener assembly including: inserting a hollow stem through a wash liquid direction device; inserting the hollow stem through a mounting block; positioning an inside surface of the mounting block against a curved surface of a wash liquid distribution pipe and an outside surface of the block against the wash liquid direction device; attaching the nozzle-fastener to an aperture in the pipe such that an inlet to the hollow stem is in fluid communication with a wash liquid passage in the pipe, wherein the stem extends through the mounting block and the wash liquid direction device, and the stem includes a outlet for the wash liquid passing through the hollow stem and to the wash liquid direction device, and wherein the wash liquid direction device and mounting block are held together by the attachment of the nozzle-fastener to the aperture in the wash liquid pipe.
Reservoir Shower For Rotary Vacuum Filter
US Patent:
6190551, Feb 20, 2001
Filed:
Dec 31, 1998
Appl. No.:
9/224578
Inventors:
Philip N. Nelson - Monroe LA
David Tidwell - Monroe LA
David Tidwell - Monroe LA
Assignee:
Paper, Inc. - Monroe LA
International Classification:
B01D 3306, B01D 3360
US Classification:
210217
Abstract:
The invention provides a shower module that includes an upper elongated chamber, a supply pipe located in the upper elongated chamber, wherein the supply pipe includes at least one discharge opening that faces a side wall of the upper elongated chamber, a lower elongated chamber located adjacent to the upper elongated chamber, wherein fluid flow is provided between the lower elongated chamber and the upper elongated chamber via a transfer opening, and wherein the lower elongated chamber includes a discharge opening; and a coupling mechanism for coupling a flexible member to the lower elongated chamber beneath and substantially parallel to the discharge opening. When incorporated with a rotary vacuum filter, the flexible member causes a reservoir of shower liquid to form on a mat located on the shower drum. The reservoir conforms to the mat across the drum and does not have to be positioned to a nominal mat thickness, and provides a maximum area of coverage on the mat surface to give maximum washing efficiency.
Sealed Shower System For Rotary Vacuum Filter
US Patent:
5965017, Oct 12, 1999
Filed:
Jul 15, 1997
Appl. No.:
8/893058
Inventors:
Philip N. Nelson - Monroe LA
Ronnie Marsh - Monroe LA
Donald E. Haley - Monroe LA
David Tidwell - Monroe LA
Ronnie Marsh - Monroe LA
Donald E. Haley - Monroe LA
David Tidwell - Monroe LA
Assignee:
Paper Inc. - Monroe LA
International Classification:
B01D 3306, B01D 3360, D21C 902, D21C 906
US Classification:
210217
Abstract:
A sealed shower system applies shower water to a pulp mat as it passes through a sealed chamber under a vacuum with an air supply that is externally regulated. The shower water forms a pond or film on the pulp mat. The amount of entrapped air is minimized through a downleg of a filter drum which results in maximum filtrate flow, an increased drainage rate, higher efficiency washing and a requirement for less shower water per pound of pulp. In addition, with less entrapped air in the filtrate, the length of the downleg can be reduced enabling lower building heights, smaller filtrate tanks and foam handling systems. The sealed shower system also forms part of a combined shower/hood structure that greatly reduces exhaust emissions.
Wash Liquid Spray Nozzles For Pulp Mat And Method To Assemble Nozzle
US Patent:
7708207, May 4, 2010
Filed:
Sep 5, 2006
Appl. No.:
11/469968
Inventors:
Todd S. Grace - Alpharetta GA, US
David Hollis Gordy - Monroe LA, US
David Brin Tidwell - Monroe LA, US
David Hollis Gordy - Monroe LA, US
David Brin Tidwell - Monroe LA, US
Assignee:
Andritz Inc. - Glens Falls NY
International Classification:
B05B 17/00, B05B 1/14
US Classification:
239 1, 239550
Abstract:
A nozzle assembly for spraying a wash liquid towards a pulp mat, the assembly including an integral fastener-nozzle having a conduit for the wash liquid, an outlet to the conduit for discharging the wash liquid and an attachment to secure the fastener-nozzle to an aperture in a wash liquid pipe, and a wash liquid direction device extending outwardly from the pipe and adapted to direct the wash liquid from the outlet towards the pulp mat.