Diffuser with flexible bellows and internal actuator

Details Diffuser with flexible bellows and internal actuator Diffuser with flexible bellows and internal actuator

1990-02-26

1991-07-02

Cuchlinski, Jr., William A.

Textiles: fluid treating apparatus

Machines

Liquid flowing

8156, 21033301, 162 60, 162251, D21D 504

Patent

active

050276204

ABSTRACT:
In a paper pulp treating vessel, such as a pulp thickener or diffuser, the screens are backflushed by reciprocating an internal piston utilizing an internally mounted hydraulic cylinder. The screens are supported by conduit arms having a central hub, and the hydraulic cylinder is mounted directly on top of the hub, with the backflushing cylinder mounted below the hub. Hydraulic lines lead from exteriorly of the vessel to the hydraulic cylinder within the vessel, and a sealing conduit is mounted surrounding the hydraulic lines. The sealing conduit extends to a point above the top of the vessel to act as an indicator if hydraulic fluid leaks in the vessel. A flexible bellows is connected between the sealing conduit and the hydraulic cylinder to allow tilting action between the arms and the top of the vessel.

REFERENCES:
patent: 3622262 (1971-11-01), Leffler
patent: 4041560 (1977-08-01), Jacobsen
patent: 4375410 (1983-03-01), Richter et al.
patent: 4441224 (1984-04-01), Laakso
patent: 4521315 (1985-06-01), Laakso
patent: 4525275 (1985-06-01), Ostlund
patent: 4556494 (1985-12-01), Richter et al.
patent: 4793161 (1988-12-01), Richter et al.
patent: 4881286 (1989-11-01), Richter et al.

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