# US 5,347,921 A · Press for treating waste products

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- Number: US 5,347,921 A
- Document ID: US5347921A
- Status: Granted
- Kind: A
- Application number: 07/735,309
- Filed: 1991-07-24
- Granted: 1994-09-20
- Earliest claimed: 1990-07-26
- Assignees: Neyrpic Framatome Mecanique
- Inventors: Jacques Gourdol
- Web page: https://patentgrep.com/patent/US5347921A

## CPC

- B30B 9/067: {with a retractable abutment member closing one end of the press chamber}
- B30B: PRESSES IN GENERAL (producing ultra-high pressure or ultra-high pressure and high temperature to effect modifications of a substance, e.g. for making artificial diamonds B01J3/00 ){(compressing means for refuse receptacles B65F1/1405)}

## Abstract

The press comprises a frame (1), a feed zone (3) for receiving the waste products, a pressing chamber (9) comprising an inlet opening (10) and an outlet opening (11) which are in opposed relation and disposed coaxially relative to the feed zone (3), and a chamber (14) for discharging the solid phase. The press further comprises an element (15) which is movable transversely relative to the axis of the press chamber (9) between a first position for closing the outlet opening (11) and a second position for opening the outlet opening (11), and an arrangement (20) for applying the movable element against the outlet opening (11) of the pressing chamber.

## Claims

### Claim 1

A press for treating heterogeneous waste products comprising a solid phase and a liquid phase, said press comprising
(a) a frame;
(b) means defining a feed zone for receiving said water products, said feed zone having a feed axis and being open adjacent an upper end thereof and defining two opposed lateral openings, a compression piston movable between one of said openings and a position located beyond the other of said openings, said lateral openings having a section adapted to a corresponding section of said piston;
(c) a press chamber having a pressing axis and comprising an inlet opening and an outlet opening which are in opposed relation to each other and disposed coaxially relative to said feed axis and pressing axis, said chamber having a section equal to a section of said compression piston, means for recovering said liquid phase, said press chamber comprising calibrated passages connecting said press chamber with said liquid phase recovering means;
(d) a chamber for discharging said solid phase located downstream of said press chamber relative to a direction of flow of said waste products through said press chamber;
(e) a closing and sealing element having a shape complementary to a shape of said discharging chamber and movable transversely relative to said axis of said press chamber between a lower position for closing said outlet opening of said press chamber during compression of waste products, and an upper position for opening said outlet opening for extracting said solid phase from said press chamber, said closing and sealing element being further movable along said axis of said press chamber; and
(f) and means cooperating with said closing and sealing element for moving said closing and sealing element along said axis of said press chamber and applying said closing and sealing element against said outlet opening and thus sealing said press chamber.

### Claim 2 (depends on 1)

Press according to claim 1, wherein said transversely movable element comprises a slide, said press further comprising a jack for moving said slide, and slideways connected to said frame and guidingly cooperating with said slide.

### Claim 3 (depends on 2)

Press according to claim 2, wherein said slide has a lower part comprising blades for cleaning walls of said discharging chamber.

### Claim 4 (depends on 1)

Press according to claim 1, wherein said means for applying said movable element against said outlet opening comprise a jack having a piston which is movable along said axis of said press chamber.