# US 2014/0197346 A1 · Safety Discharge Valve

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- Number: US 2014/0197346 A1
- Document ID: US20140197346A1
- Status: Published application
- Kind: A1
- Application number: 14/222,642
- Filed: 2014-03-23
- Published: 2014-07-17
- Earliest claimed: 2011-08-03
- Inventors: Gang HUO
- Web page: https://patentgrep.com/patent/US20140197346A1

## CPC

- F16K 1/34: Cutting-off parts, e.g. valve members, seats (F16K1/06, F16K1/12, F16K1/14, F16K1/26 take precedence)
- F16K 11/14: operated by one actuating member, e.g. a handle (with one plug turning in another F16K11/12)
- F16K 17/0413: {in the form of closure plates}
- F16K 17/0446: {with an obturating member having at least a component of their opening and closing motion not perpendicular to the closing faces}
- F16K 17/0473: {Multiple-way safety valves}
- F16K 27/0232: {the valve member retained by a removable closure}
- F16K 31/52441: {with a pivoted disc or flap}
- F16K 41/003: {by fluid}
- F16K 43/00: Auxiliary closure means in valves, which in case of repair, e.g. rewashering, of the valve, can take over the function of the normal closure means; Devices for temporary replacement of parts of valves for the same purpose
- B63B 13/00: Conduits for emptying or ballasting; Self-bailing equipment; Scuppers (draining means for hatches B63B19/26; centrifugal bilge-water separators B04; {arrangements of installations for treating ballast water B63J4/002; } pipes in general F16L)
- B63G 8/22: Adjustment of buoyancy by water ballasting; Emptying equipment for ballast tanks ({conduits for emptying or ballasting on vessels in general B63B13/00;} stabilising vessels using ballast tanks B63B43/06)
- Y10T 137/87981: Common actuator
- Y10T 137/88054: Direct response normally closed valve limits direction of flow
- F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)}
- B63B: SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING (arrangements of vessel ventilation, heating, cooling, or air-conditioning B63J2/00; floating substructures as supports of dredgers or soil-shifting machines E02F9/06)
- B63G: OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS (means of attack or defence in general, e.g. turrets F41H)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A safety discharge valve includes a siphon-type open/close device (1), a valve cover assembly (2), a valve rod (3), a valve body (4), an extensible side-sealing top-pressing assembly (5), side rotary sealing plates (6), a tapered bottom valve plug (7) and a side water inlet emergency plug (10).

## Claims

### Claim 1

A safety discharge valve, comprising a siphon-type open/close device (1), a valve cover assembly (2), a valve rod (3), a valve body (4), an extensible side-sealing top-pressing assembly (5), side rotary sealing plates (6), a tapered bottom valve plug (7), and a side water inlet emergency plug (10); wherein, the siphon-type open/close device (1) is connected to the upper part of an open/close nut (8) on the valve cover assembly (2) through an inserted sealing connection; the top of the valve rod (3) is slidably connected with the center of the valve cover assembly (2) and is sealed inside a sealed valve rod cavity (62), below the bottom of the piston (24) and above a sealing filler (55) in the siphon-type open/close device (1); the lower part of the valve rod (3) is arranged inside of the valve body (4); two sides of the valve body (4) are provided with side water inlets (14) and the bottom of the valve body (4) is provided with a tapered bottom water outlet (16); the lower end of the valve rod (3) is connected with a tapered bottom valve plug (7); the lower tapered part of the tapered bottom valve plug (7) is matched with the tapered bottom water outlet (16); the extensible side-sealing top-pressing assembly (5) is arranged on the top of the tapered bottom valve plug (7) via a guide piece (15) on the valve rod (3); the top of the extensible side-sealing top-pressing assembly (5) presses upon a holding piece (11) on the valve rod (3); the two top ends of each side of the extensible side-sealing top-pressing assembly (5) press upon the smooth back surfaces of the side rotary sealing plates (6) in rolling-sliding contact therewith; the upper parts of the side rotary sealing plates (6) are rotatably connected with suspension brackets (12) on the inner wall of the valve body (4) through hinge pieces (13); the front sealing surfaces of the side rotary sealing plates (6) fittingly connect with the inner sealing surfaces of the side water inlets (14); the smooth back surfaces of the side rotary sealing plates (6) are inclined at an angle of five degrees relative to the central axis of the valve rod (3); the side water inlet emergency plug (10) is extractably connected with an extractable cap (9) on the valve cover assembly (2);
the piston (20) in the siphon-type open/close device (1) is slidably seal-connected with the inner wall of the inner main bushing body (19) through a sealing ring (26); the upper part of the open/close nut (8) in the valve cover assembly (2) and the siphon-type open/close device (1) are plug connected and sealed by a sealing ring (50); the sealing pieces (51), (52), (53), (54) are sequentially arranged between the open/close nut (8), the gland bush (45), the bracket (46), the spinning sleeve (47) and the gland cover (48); the space between the gland cover (48) and the annular stuffing slot (49) on the valve cover is filled with sealing fillers (55), and further seal-connected to the valve rod (3); the outer part of the guide and positioning bolt (60) is provided with a fixing nut (57); sealing gaskets (56), (58) are placed between the bracket (46) and the fixing nut (57), and between the fixing nut (57) and the head nut (59); the space below the bottom of the piston (24) and above the sealing filler (55) in the siphon-type open/close device (1) constitutes a sealed valve rod cavity (62).

### Claim 2 (depends on 1)

The safety discharge valve according to claim 1, wherein the siphon-type open/close device comprises a downward opening container cover (18), an inner main bushing body (19) and a piston (20); the top end of the downward opening container cover (18) features an external drive connector (17); the top inner wall of the downward opening container cover (18) is connected with the inner main bushing body (19); the piston chamber (25) in the inner main bushing body (19) contains the piston (20); the piston (20) is slidably seal-connected with the inner wall of the inner main bushing body (19) through a sealing ring (26); the lower part of the inner main bushing body (19) is provided with a connector (22); inside the connector (22) an annular seal surface (21) is provided; the top end of the inner main bushing body (19) is provided with a through-hole (23) that connects the piston chamber (25) with the breathing chamber (24); the volume of the breathing chamber (24) below the lowest point of the through-hole (23) is larger than the volume of the piston chamber (25) between the upper surface of the piston (20) and the lowest point of the through-hole (23) when the piston (20) is at its lowest position.

### Claim 3 (depends on 1)

The safety discharge valve according to claim 1, wherein the extensible side-sealing top-pressing assembly comprises a main body (27), an extensible piece (28), a connecting piece (29), and a roller or a smooth contact head (30); the inner wall of the longitudinal hole (31) within the main body (27) is provided with a longitudinal guide groove (32); the extensible piece (28) is arranged between each of the two ends of the main body (27) and the connecting piece (29); each of the two top ends of the connecting piece (29) is provided with a roller or a smooth contact head (30); the extensible piece (28) of the extensible side-sealing top-pressing assembly is a spring or a spring plate.

### Claim 4 (depends on 1)

The safety discharge valve according to claim 1, wherein each of the side rotary sealing plates is provided with an arc-shaped hanger (33), a hanging hole (34), a smooth touch surface (35), and a front sealing surface (36).

### Claim 5 (depends on 1)

The safety discharge valve according to claim 1, wherein the side water inlet emergency plug comprises a tension disc (37), a fixed disc (38), a rubber seal (39) and a rotary handle nut (40); the outside of the tension disc (37) is cone-shaped, and its inside is provided with a stud (41); the stud (41) slides through the center hole of the fixed disc (38) and connects with the rotary handle nut (40); the fixed disc (38) is in fitting contact with the positioning bore surface of the rubber seal (39); the bore of the rubber seal (39) is cone-shaped, and the inner conical surface of the bore is in fitting contact with the outer conical surface of the tension disc (37); the rubber seal (39) has a cylindrical outer surface, with its diameter the size such that it can be slidably inserted into the side water inlets (14); the outer bottom of the tension disc (37) is provided with a socket (42); inside the socket (42) is arranged a fastening ring (43); a gap cavity (44) is arranged between the tension disc (37) and the fixed disc (38).

### Claim 6 (depends on 1)

The safety discharge valve according to claim 1, wherein the outer bottom of the valve body (4) is provided with a flange (61).

### Claim 7 (depends on 1)

The safety discharge valve according to claim 1, wherein the holding piece (11) is a protruding column of the valve rod body or a column-spring combination.