# US 8,740,176 B2 · Driving and adjusting device of passive shuttle-type shut-off valve

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- Number: US 8,740,176 B2
- Document ID: US8740176B2
- Status: Granted
- Kind: B2
- Application number: 13/638,068
- Filed: 2011-04-01
- Published: 2013-08-15
- Granted: 2014-06-03
- Earliest claimed: 2010-04-01
- Assignees: Xiangwei Zeng
- Applicants: Xiangwei Zeng
- Inventors: Xiangwei Zeng
- Web page: https://patentgrep.com/patent/US8740176B2

## CPC

- F16K 31/122: the fluid acting on a piston (F16K31/143, F16K31/163, F16K31/363, F16K31/383 take precedence)
- F16K 1/126: {actuated by fluid}
- F16K 31/1225: {with a plurality of pistons}
- Y10T 137/3367: Larner-Johnson type valves; i.e., telescoping internal valve in expanded flow line section
- 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)}
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A driving and adjusting device of a passive shuttle-type shut-off valve is provided. The problems of a big valve body structure size, a non-random angle installment, a single drive mode, low stability and reliability, a high temperature and poisonous material entering into the driving and adjusting device and unadjustable on-off speed and low volume in the prior device are solved. A main body (33) is connected with an upstream pipe (1) and a downstream pipe (3). A pressure port (2) on the upstream pipe (1) is connected with the driving device. A double acting cylinder (34) is provided in a valve sleeve (21). The left and right chambers of the double acting cylinder are connected with the valve clack (24). The driving device is composed of a regulating valve, a directional valve, a check valve, a boost-insulation valve and an accumulator (18). It can select the drive mode and adjust the on-off speed and the flow volume of the valve.

## Claims

### Claim 1

A driving and adjusting device of a passive shuttle-type shut-off valve comprising a valve body in which a left end of the valve body is connected with an upstream pipe, and a right end of the valve body is connected with a downstream pipe; in an inner chamber, a valve sleeve and a coaxial valve shaft are in axial sliding engagement with each other; the left end of the valve shaft is connected with a valve flap and the right end thereof is connected with a piston, the piston is in a double acting cylinder within the valve sleeve; a double acting cylinder cap is provided at the right end of the valve sleeve, and flow channels are disposed around the valve sleeve; a left side of the valve flap is in sealing engagement with a valve seat, and between a right side of the valve flap and the double acting cylinder there is disposed a spring; a left chamber of the double acting cylinder is connected with the first and second three-position four-way valves via a first line or a first shuttle-type boosting insulation valve connected in parallel with the first line, a first bi-directional adjusting valve, and a second line; a right chamber of the double acting cylinder is connected with ends of the first and second three-position four-way valves via a third line or a second shuttle-type boosting insulation valve connected in parallel with the third line, a second bi-directional adjusting valve and a fourth line; the first and second three-position four-way valves are connected with a three-way diverter adjusting valve via a fifth line; the first and second three-position four-way valves are connected to a return tank via a sixth line; the three-way diverter adjusting valve is connected with an energy accumulator via a seventh line and a first check valve; the three-way diverter adjusting valve is connected with a pressure port of the upstream pipe via a second check valve, an eighth line or a third shuttle-type boosting insulation valve connected in parallel therewith; the energy accumulator is connected with the return tank via a ninth line, a third check valve, a pump, and a tenth line; the energy accumulator is connected with a pressure relief groove via a pressure relief valve and an eleventh line.

### Claim 2 (depends on 1)

The device according to claim 1, wherein the first and second three-position four-way valves are manually operated valves or electromagnetic valves; the first, second and third check valves are passive shuttle-type check valves; the three-way diverter adjusting valve is a passive shuttle-type three-way diverter adjusting valve; adjusting screws are disposed at opposite axial ends of a shuttle sleeve of the three-way diverter adjusting valve, the screws come into contact with either side of a shuttle core via an adjuster fixedly connected to a screw; an end port b and an end port c are in communication with a main channel, an end port a is in communication with a by-pass channel and is provided with a fourth check valve therein; a shuttle core blocks the end ports b and c respectively at limit positions; the first and second bi-directional adjusting valves are passive shuttle-type bi-directional adjusting valves.

### Claim 3 (depends on 1)

The device according to claim 1, wherein the first and second three-position four-way valves are electromagnetic valves with handles.

### Claim 4 (depends on 1)

The device according to claim 1, wherein a first, a second, and a third handled electromagnetic valve are arranged respectively in the first line, the third line and the eighth line; the first electromagnetic valve is connected with a first multi-piston cavity and a mono-piston piston cavity of the shuttle-type boosting insulation valve by means of the second and the third handled electromagnetic valves; a piston in the first multi-piston cavity and a piston in the mono-piston cavity are coaxial with each other, and heat insulating layers are disposed between the pistons and between the two cavities; a volume of the mono-piston cavity is greater than that of a left or a right chamber of the double acting cylinder.

### Claim 5 (depends on 4)

The device according to claim 4, wherein the second handled electromagnetic valve is connected with the mono-piston cavity and the second check valve, and a fourth and a fifth handled electromagnetic valve is respectively connected with the first and second bi-directional adjusting valves and a second and a third multi-piston cavity.