Hydraulic filter press
US4397177A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 9, 1981 |
| Grant date | Aug 9, 1983 |
| Priority date | — |
| Expiry date | Mar 9, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D29/82
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A hydraulic filter press apparatus includes a filtration cell which includes a container for receiving a sample of the drilling mud, a pressure inlet communicating with the container, a bladder for preventing fluid communication between the drilling mud sample and the pressure inlet and for transmitting hydraulic pressure from the pressure inlet to the drilling mud sample, a filter arranged for contacting the drilling mud sample in the container, and a liquid outlet for draining the liquid pressed from the drilling mud sample through the filter. A pump is provided for supplying hydraulic fluid under pressure to the pressure inlet of the filtration cell, which pump includes a pump body having a cylindrical bore disposed therein and an outlet port for communicating the bore with the pressure inlet of the filtration cell. The pump also includes a rotatable piston member threadedly engaged with the pump body for pressurizing fluid contained in the bore upon rotation of the piston member relative to the pump body. A pressure regulator includes a high pressure inlet communicated with the outlet port of the pump, and includes a regulated pressure outlet communicated with the fluid pressur…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.