Abstract:
Method for feeding in and for transporting material in a pneumatic material conveying system, which conveying system comprises at least one input point (60) for material, a material conveying pipe (100), which can be connected to an input point (60), and a material container (10, 50), in which the material to be transported is separated from the transporting air, and also means for achieving a partial vacuum/pressure difference and/or a transporting air flow in the conveying pipe (100) at least during the transporting of material, which means comprise at least one partial vacuum source (30). In the method the suction side of the partial-vacuum source (30) is connected to act in the conveying pipe (100) and onwards to act in an input point (60) arranged in the conveying pipe or at least to act in the feed-in channel (81 ) that is between the conveying pipe and an input point, in which case the input point (60), or at least the feed-in channel (81 ), that is closest to the material container in the conveying direction of the material empties and the material displaces into the conveying pipe (100), that the channel arranged between an input aperture (61 ) of an input point and the conveying pipe (100) comprises a wall (65) that changes its shape, with which wall (65) changing its shape the pathway between an input aperture (61 ) of an input point (60) and the conveying pipe (100) is closed or at least the flow cross-sectional area of the pathway is essentially reduced, when the pressure in the pathway is essentially smaller than outside the wall part (65) that changes its shape. The object of the invention is also an input point and a pneumatic material conveying system.
Abstract:
A tension controlled pressure reducing valve used in gas pressure control which comprises a diaphragm in the form of a resilient tube (4) with connected faces (5 and 6), further with planchettes (7) placed longitudinally on said tube (4) and anchored in said faces (5 and 6) of said tube (4). Said diaphragm controls movement of a plug (9) with regard to a seat of a throttling device.
Abstract:
This invention relates to a pressure compensating valve and more particularly, but not exclusively, to a balanced pressure compensating valve, or regulator. The valve includes a chamber (6) for containing fluid, defined by a flexible barrier (2) trapped between first (3) and second (4) surfaces. A fluid inlet provides fluid to the interior of the chamber. A fluid outlet selectively allows fluid to pass out of the chamber. Movement of the first (3) and second (4) surfaces relative to each other causes change in contact between the flexible barrier and the first and second surfaces to selectively open the fluid outlet, in a first position, and occlude it between the flexible barrier and one of the surfaces, in a second position.
Abstract:
A pipe clamp (20) for inhibiting fluid flow through a flexible pipe, comprising first (21) and second (22) contact members for positioning on opposing sides of a flexible pipe, and actuation means (29), optionally a pyrotechnically driven piston actuator, for automatically urging the contact members together, such that in-use a flexible pipe can be pinched closed. Particularly suited to inhibiting fluid flow in pipework under repair, or emergency shut off of fluid flow in failed pipework. Also relates to a pinch valve and method of use.
Abstract:
A diaphragm valve is provided that includes a valve member (102) having an integral construction. The valve comprises a sealing portion (116), a valve seat (118), and a diaphragm portion (126) having a first side (122) and a second side (124), wherein the valve member (102) is configured to comprise an unfolded configuration and a folded configuration, and wherein the valve member (102) defines an actuatable interface between the sealing portion (116) and the valve seat (118) when in the folded configuration.
Abstract:
wearable rubber parts for fluid handing systems include a four layer structure, wherein the inner most layer of the four layer structure is a polyurethane layer. The polyurethane can be millable polyurethane. The polyurethane used in the inner most layer can be produced by reacting diisolcyanate with a polyester and/or polyether polyols and a chain extender. The wearable rubber part can be an expansion joint, a pinch valve, or a hose.
Abstract:
Die Erfindung betrifft ein Überdruckventil (1), das einen ersten Druckraum (2) und einen zweiten Druckraum (3) aufweist, wobei die beiden Druckräume (2, 3) über einen Strömungsweg (4) miteinander verbunden sind und wobei ein Ventilelement (5) zwischen den beiden Druckräumen (2, 3) im Strömungsweg (4) angeordnet ist, das bei der Überschreibung einer vorgegebenen Druckdifferenz zwischen den beiden Druckräumen (2, 3) öffnet und bei der Unterschreitung der vorgegebenen Druckdifferenz zwischen den beiden Druckräumen (2, 3) schließt. Um eine einfachere und kostengünstigere Bauart des Überdruckventils insbesondere beim Einsatz in Riemen- und Kettenspannern zu erreichen, sieht die Erfindung vor, dass das Ventilelement (5) aus einer Hülse besteht, die in einem Mittenbereich eine Einschnürung (6) aufweist, die so ausgebildet ist, dass sie bei der Unterschreitung der vorgegebenen Druckdifferenz einen Verschluss des Strömungsweges (4) zwischen dem ersten und dem zweiten Druckraum (2, 3) bildet.
Abstract:
Disclosed herein is an inline valve. The inline valve includes, a housing, a choke member in operable communication with the housing, a portion of the choke member being substantially immobile relative to the housing and a portion of the choke member being mobile relative to the housing. The inline valve further includes, an actuator in operable communication with the movable portion of the choke member, the actuator selectively causing the choke member to deform radially.