A system for controlling slurry flow through a flexible-walled transport tube. An example system includes a frame, a pivot pin, a rotatable radial arm having an attached pressure pad, a spring tension adjustment rod extending between the radial arm and the frame, and a coil spring concentric with th
A system for controlling slurry flow through a flexible-walled transport tube. An example system includes a frame, a pivot pin, a rotatable radial arm having an attached pressure pad, a spring tension adjustment rod extending between the radial arm and the frame, and a coil spring concentric with the spring tension adjustment rod and configured to oppose rotation of the radial arm away from a flexible-walled transport tube contacting the pressure pad. In one operating condition, a decrease in the pressure of the slurry within the transport tube reduces the force applied by the slurry outward on the tube wall, leading the spring to rotate the radial arm toward the tube, causing the contact pad to deflect the wall of the flexible-walled transport tube and impeding the flow of slurry through the tube.
대표청구항▼
1. A device comprising: a frame configured to receive a flexible tube;a first pressure device coupled to the frame on a first side of the received flexible tube; anda second pressure device coupled to the frame on a second side of the received flexible tube,wherein the first pressure device applies
1. A device comprising: a frame configured to receive a flexible tube;a first pressure device coupled to the frame on a first side of the received flexible tube; anda second pressure device coupled to the frame on a second side of the received flexible tube,wherein the first pressure device applies a first amount of pressure to a first location on the flexible tube and the second pressure device applies a second amount of pressure to a second location on the flexible tube, when the device is in a flow mode,wherein the first pressure device applies a third amount of pressure to the first location on the flexible tube and the second pressure device applies a fourth amount of pressure to the second location on the flexible tube, when the device is in a non-flow mode,wherein the first and second pressure devices are rotatably coupled to first points on the frame,wherein the first and second pressure devices are coupled at second points on the frame,wherein each of the first and second pressure devices comprises a first arm, a pressure pad and a second arm,wherein the first arm is connected to the respective first point at a first end of the first arm and the pressure pad is mounted to the first arm at a second end of the first arm,wherein the second arm is mounted to the first arm at a first end of the second arm and is adjustably attached to the respective second point on the frame at a second end of the second arm. 2. The device of claim 1, wherein the second points are adjustable. 3. The device of claim 1, wherein each of the first and second pressure devices further comprises a spring mounted on the second arm and is mechanically coupled to the first arm and the frame. 4. The device of claim 1, wherein each of the first arms is rotably connected to the frame at two first points. 5. The device of claim 1, wherein the pressure pads are cylinder-shaped and oriented so that when contacting the flexible tube, the flexible tube bends over a round face of the pressure pad. 6. The device of claim 5, wherein the first arms of the first and second pressure devices have different lengths, wherein the pressure pads are offset from one another along a longitudinal axis of the flexible tube when in contact with the tube. 7. The device of claim 6, wherein the first and second pressure devices are mounted at a first side of the frame, the device further comprising a second set of pressure devices mounted at a second side of the frame. 8. A device comprising: a frame;at least one pivot pin secured to the frame;a radial arm having a first end and a second end, wherein the first end is rotatable about the pivot pin;a pressure pad fixed to the second end of the radial arm;a spring tension adjustment rod having a first end and a second end, wherein the first end is fixed to the radial arm at a point distant from the radial arm first end, wherein the second end is fixed to the frame, and wherein the rod is aligned substantially parallel to the plane of rotation of the radial arm and substantially perpendicular to the radial arm; anda coil spring substantially concentric with the spring tension adjustment rod and configured to oppose rotation of the radial arm away from a flexible-walled transport tube contacting the pressure pad. 9. The device of claim 8, wherein the radial arm first end comprises two branches and each branch is rotatable about a separate one of the at least one pivot pin. 10. The device of claim 8, wherein the pressure pad is cylinder-shaped and oriented with a longitudinal axis of the pressure pad aligned substantially perpendicular to a longitudinal axis of the transport tube. 11. The of claim 8, further comprising a spring tension adjustment nut, wherein the spring tension adjustment rod is threaded to accept the spring tension adjustment nut, and wherein the rod and nut combine to make the distance between the first and second ends of the adjustment rod adjustable by turning the adjustment nut. 12. The device of claim 8, wherein there are two of each element, except the frame, wherein each element is positioned substantially symmetrically about a vertical center axis of the frame, and wherein the two radial arms rotate in substantially the same plane as one another. 13. The device of claim 12, wherein the two radial arms have different lengths. 14. The device of claim 12, further comprising a second slurry flow control device positioned along the vertical center axis of the frame in series with the first slurry flow control device.
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이 특허에 인용된 특허 (3)
Anfindsen Ole A. (P.O. Box 30 N-4301 ; Sandnes NOX), Adjustable control valve for flow regulation of gas or liquid and use of such valve.
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