SE1100393A1 - Methods and apparatus for single-directional wiring - Google Patents

Abstract

The invention relates to a method and device for achieving maximum flow and minimum loss of flow in non-return valves. The non-return valve ensures that liquids and gases do not waste the desired direction and can be applied to air, fire gases, bad smells, drains, rat intrusion via the drain pipe. The non-return valve is self-sealing and inexpensive to use in many applications. The principle allows straight laminar conduit area without obstructing parts. The device can be compared to a reinforced foil (6) inclined inside a tube (1). Two of the sides (7) of the membrane (6) are attached to opposite pipe walls from the middle of the intermediate peripheral portion of the pipe (1). The short side (8) of the membrane (6) at the center of the tube (1) is free and can by the expression flex over to the opposite tube wall and there form a C-like shape. This prevents fl fate in one direction but can fl bleed freely in the opposite direction when the diaphragm (6) fl exits back at fl expression from the other direction. Published with 2 gur 2.

Description

BRIEF DESCRIPTION OF THE INVENTION A preferred embodiment according to the invention comprises an insert which can be mounted inside an existing pipe at the first best connection. Such an insert can be wholly or partly injection molded from rubber or from elastic thermoplastic and have different forms of reinforcements or stiffeners. The insert is internally provided with a wall or longitudinally inclined flexible membrane inclined wall, one end of which is again close to the periphery of the tube and the joint, while the membrane widens in width towards its other end, preferably at the center line of the tube where the widest portion of the inclined membrane is shaped. to reach the inside of the surrounding pipe to seal against it. In order for the cylindrical body of the insert not to implode from any liquid or gas pressure present, this component should be reinforced or stabilized by a sufficient wall thickness. It is an advantage at higher working pressures that the membrane is made of, for example, fabric-reinforced rubber, which is vulcanized on a cylindrical body of some metal.

Another embodiment of a one-way valve according to the invention may consist of a single movable or deformable part, here called oblique diaphragm, in addition to the associated enclosing cover with connecting eller ends or connecting threads at the ends and with grooves or slots in the cover of the cover in which the diaphragm is way. In order to achieve properties such as absolutely closed return fl fate or the lowest possible opening pressure at normal inlet den fate, the membrane can be arranged in different ways and be made of more or less fl visible, preformed or lined materials.

A third embodiment is arranged for possible use as an artificial heart valve or heart valve, and uses the biological tissue as a surrounding wall at least in part, as well as the tissue's sombility as a contributing resource to provide an easily actuated membrane during the closure and opening movements of the heart muscle.

A non-return valve according to the present invention comprises a shape-changing and strongly leaning diaphragm of reinforced, alternatively unmanned rubber cloth or flexible plastic or of a foil of stainless steel or other suitable materials, the diaphragm being arranged in an inclined direction within a round, oval or polygonal housing, pipe or sleeve, so that the diaphragm at its widened end near the outlet end of the non-return valve can be shaped or can be formed sealingly against the adjacent inside of the housing or pipe and that the other and tapered end of the diaphragm diagonally, on the other hand, at the pressure or inlet side of the non-return valve, connects sealingly to the opposite inside of the cover so that a V-shaped pocket is formed on the outlet side of the non-return valve, while the diaphragm on the inlet side of the non-return valve forms an inclined surface. liquids.

DESCRIPTION OF SOME EMBODIMENTS ACCORDING TO THE ATTACHED FIGURES Some embodiments of the invention will be described in more detail with reference to Figures 1-5.

Figure 1 shows in longitudinal section a method and device intended to cause a blockage against unwanted return fates in a spliced pipeline for liquids or gases.

An insert (2) of mold without plastic or rubber etc. inserted inside the tube (1) is provided with a fl end or collar (3) in the inlet end (4) of the insert and a cylinder element or sleeve (5) extending from the med end with an inside the sleeve inclined flexible wall or inclined membrane (6), the mantle surface (7) of which is formed in a semicircular or arcuate shape, the distal free and sealing end (8) being shaped to fit and seal against the inside of the surrounding tube (1). The membrane (6) can be provided with grooves or be reinforced (9) with steel wires or fabric or be corrugated in the longitudinal direction of the membrane for strength and ibilibility in desired directions. The shape and preload as well as the elasticity of the diaphragm can be adjusted so that sealing against return fl fats is achieved already in the initial position of the diaphragm. The diaphragm is deformed and opened by the pressure of inflowing gas or liquid so that the diaphragm buckles in the diametrical direction (10) from its initial or sealing position. When the pressure ceases, the diaphragm should preferably be able to spring back spontaneously to its back-sealing operating position. For this purpose, a protruding stick (l 1) or the like projecting from one side of the diaphragm or the like, which reaches the inside of the tube, may initiate resilience to the initial position of the diaphragm.

The insert according to Figure 1 can alternatively have a fl surface location in the existing pipe so that the insert can be fixed in any place. The visible membrane is vulcanized on a short obliquely cut piece of pipe, which can be screwed or clamped to the outer fixed pipe. To prevent leakage in the gap between the partially cylindrical insert and the inside of the outer tube, rubber seals can be arranged around the insert.

Figure 2 shows in perspective sketch an embodiment of a complete non-return valve according to the invention, where the inclined membrane (6) is formed from a hard but thin foil of suitable material with regard to heat resistance and elasticity, where the membrane surface (7) is initially formed equally as the shape of the cover or the inside of the tube (1) and is attached to the surrounding cover (1) by a milled or laser cut slot (12), in which the foil or membrane is glued or clamped in a suitable manner to the wall of the cover (1).

Figure 3 shows an embodiment of a view in the longitudinal direction of the pipe where the inclined membrane (6) is formed of a hard and thin metal foil, the mantle surface of which is slightly folded in a fan-like shape and elastically round-shaped at its sealing position (8) and attached to the surrounding the cover in an obliquely laser-cut gap (12) in which the foil is glued obliquely to the plane of the sleeve (1) so that the membrane is biased towards its sealing or outwardly bulging position.

Figure 4 shows a cross section of an embodiment where the inclined membrane (6) is formed of a foil, which is elastic and slightly pleated and round-shaped towards the surrounding housing and slidably or surface-oriented to the surrounding housing in a spaced or laser cut slot (12), in which the foil or membrane can slide between end positions which are marked or limited by vulcanized strips (13, 14) on the foil on either side of the pipe wall (1). This to some extent leaking construction has the advantage that the membrane is easier to influence to change shape even at low working pressures.

Figure 5 a-c shows in three views a modification of the invention where the non-return valve is designed for use as an artificial heart valve. Here, not only the inclined membrane is elastic and visible, but also the parts of the cover (1) that fix the membrane (6).

Figure 5 a is a cross-sectional view showing that the cover (1) has a slightly arcuate cross-sectional shape, which should significantly increase the service life of the non-return valve significantly. Figures 5 b-c are two side views towards the narrow and wide side of the heart valve, respectively.

ALTERNATIVE DETAILED EMBODIMENTS In order for the inclined membrane to be easily reshaped and at the same time seal well even in the vicinity of the sealing end (8), it may be an advantage if the membrane in connection with its attachment to the pipe (1) or the insert (2) is prepared with a big or embossed groove on each side of the membrane, which gives the membrane a more compliant bend in both deflection directions.

In order for the inclined membrane to seal well at the sealing end (8), it is advantageous if the tube (1) is an oval arcuate shape according to Figure 5 a.

The sealing lip can advantageously be widened if the membrane is allowed to protrude in front of the outermost attachment. This arrangement can eliminate any leakage closest to the edges of the diaphragm at the height of the beginning of the sealing lip (8).

If the inclined slope of the membrane does not follow a straight line but is slightly curved in a convex or concave arc, the resistance of the membrane to deformation in either direction can be affected.

The diaphragm can be attached to the tube (1), the cover or the insert (2) in different ways. For example, the diaphragm can be clamped if the tube (1) with the gap (12) is divided into two halves.

It is not necessary for the membrane (6) to seal against the surrounding pipe (1) at its initial position. At a certain countercurrent pressure, the diaphragm will in any case be pressed firmly against the inside of the pipe and sealed.

One skilled in the art will appreciate that details and devices according to the inventive concept can be combined and designed in many further ways within the scope of the inventive concept.

Description: © BERTIL Ingvar BURSTRÖM Munka-Lj ungby 201 1-05-18

Claims (10)

PATENT REQUIREMENTS Ways to achieve, with the greatest possible relative passage area and minimal flow losses, unidirectional fl fate in pipes, pipes and ducts by self-acting blocking of return flow of water, liquids, drains, air, odors, gases and other fl fates and fl uids, characterized in that the channel or tube (1) is internally provided with an axially delimited insert (2) or stand, which comprises at least one vaulting foil or membrane (6), which at at least two opposite sides are at least approximately tightly connected to the insert (2) and / or opposite insides of the tube (1) together with one intermediate peripheral portion of the insert (2) and / or the tube (1), the side connections (7, 12) of the membrane (6) being inclined relative to the longitudinal direction of the tube (1) so that approximately one half of the inside of the tube (1) can be said to be shielded in the axial direction between or behind the connecting plane (7, 12) of the membrane (6), at the same time as the tube (1) including the opposite half of the tube is also shielded by membrane ts (6) free bulging portion (8) at pressure from the outside, whereby the bulge of the membrane (6) to the end position (8) and shape is partly limited by the inside of the tube (1), while the membrane (6), at fl expression in the permissible fl direction of fate, curves or fl exits over to the other side (10) of the connection plane (7, 12) and opens the passage of the pipe (1). Device for non-return valve similar to the method in claim 1, which with the largest possible relative passage area and minimal flow losses is intended to achieve unidirectional fl fate in pipes, pipes and ducts by self-acting blocking of return flow of water, liquids, drains, air, odors, gases and other fates and fluids, characterized in that the channel or tube (1) internally comprises at least one doming foil or membrane (6), which at at least two opposite sides are at least approximately tightly connected to the opposite insides (12) of the tube (1) together with the tube (1) one intermediate peripheral portion, the side connections (7, 12) of the diaphragm being inclined relative to the longitudinal direction of the tube (1) so that approximately one half of the inside of the tube (1) can be said to be sensed in the axial direction between or behind the diaphragm (6) ) connection plane (7, 12), at the same time as the pipe (1) including the opposite half of the pipe is also shielded by the bulging portion (8) of the membrane (6) ck from the outside, the bulge of the diaphragm (6) to the end position (8, 10) and shape being partly limited by the inside of the tube (1), while the diaphragm (6) when fl expressed in the permitted fl direction of curvature curves or fl exers towards the other side (10) of the connection plane (7, 12) and opens the pipe passage. Method and device according to claim 1 or 2, characterized in that the shape, contour, inclination and position of the membrane (6) are adapted to the tube (1) so that most of the bulging free edge portion (8) of the membrane (6) can reach and formally tangential the sealing side of the tube (1) perpendicular to the connection plane (7, 12) of the membrane (6). Method and device according to one of the preceding claims, characterized in that the membrane (6) is fl visible and elastically malleable perpendicular to its normal plane but dumb and in principle unstretchable in its direction of propagation, and is at least approximately liquid- and air-tight and as reinforcement, suspension or initial form bias to either bulge position may be provided with reinforcing fibers (9), fabric, lamentations, grooves, wave patterns, layer layers or the like. Device according to one of the preceding claims, characterized in that one of the surface planes of the membrane (6) is arranged with a pin (1 l) projecting from the plane (7) or struts which can limit, position-orient or return the bulge of the membrane (6) to a desired location. Device according to one of the preceding claims, characterized in that the opposite inclined sides (7) of the membrane (6) are adapted to one end position of the membrane, and are slidably or replaceably fixed by glue, screw or rivet joints or via grooves (1 2) or guides to be attached in position on the inside of the tube (1), which at its one end or a jacket side is accessible for inspection and tampering. Method and device according to one of the preceding claims, characterized in that the diaphragm (6) is provided in close proximity to the inside of the pipe (1) with bends or grooves in order to be able to bend more easily and a exe between the two end positions (10) of the diaphragm (6). and connect closer to the inside of the tube (1) in the sealing position (8) of the diaphragm (6). Device according to one of the preceding claims, characterized in that the connection of the tube (1) to the free and bulging end (8) of the membrane (6) is arranged slightly dentated and shaped like the corner of the human eye so that the membrane (6) can more easily connect against and formed by the surrounding tube (1). Device according to any one of the preceding claims, characterized in that the tube (1) has a round, oval or angular shape or combination of shapes, comprising at least two flat opposite sides with a semicircular bottom profile for the purpose of the opposite walls of the tube (1) or duct must be able to contain brackets, grooves (12) or guides for detachable attachment of at least two of the sides of the membrane (6). Device according to one of the preceding claims, characterized in that at least two opposite sides (7) of the membrane (6) are fastened in an elastically resilient housing (1) or frame, which is designed for implantation or installation in a soft-walled space or channel. such as a human heart or organ, so that this space is allowed to change shape and support or seal against the free edges (7, 8) or parts thereof of the membrane (6).