SE536244C2 - Device for single-directional wiring - Google Patents

Abstract

The invention relates to a device for achieving maximum flow and minimum pressure drop in non-return valves, which ensures that liquids and gases do not spill in the undesired direction. The invention is applied to the edge for air, fire gases, against bad smells, flooding from drains, rat intrusion via drain pipes, etc. Check valves according to the invention are self-sealing and inexpensive to manufacture and can be used in many different applications. The principle allows straight laminar flow area without obstructing parts. The device comprises an axially inclined sail or membrane (6) of reinforced foil inside a tube (1). Two of the sides (7) of the curved membrane (6) are attached to opposite tube walls starting from the tube. (l) periphery to at the height of the center of the tube. The curved short side (8) of the membrane (6) at the center of the tube (1) is completely free and can, by the expression, bulge out and touch the opposite tube wall and there form a C-like shape for round tubes. In this way, the totalt fate is completely prevented in one direction, but can fl free freely in the opposite direction when the membrane (6) can completely undan escape away in the other direction at opposite fl expression and thereby release a fully open passage area without disturbing edges and obstructing details. Published with 2 gur 2.

Description

BRIEF DESCRIPTION OF THE INVENTION A preferred embodiment of the invention comprises an insert which can be mounted inside an existing pipe at the first best flange joint. 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 sloping towards the longitudinal direction of the tube or inclined flexible membrane, one end of which is located near the periphery of the tube and the flange joint, while the membrane widens in width towards its other end, preferably at the center line of the tube. 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 shape-changing part, here referred to as diagonal diaphragm, in addition to the associated enclosing cover with connecting flanges or connecting threads at the ends and with grooves or slots in the cover casing 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 fl fate, the membrane can be arranged in different ways and be made of more or less fl visible, preformed or reinforced 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 flexibility 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 counter-flowing "yawning" and strongly inclined diaphragm of reinforced, alternatively unreinforced rubber cloth or flexible plastic or of a foil of stainless spring 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 opposite 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 a sloping surface which can be completely or partially pushed away by inflowing gases 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 1-58 244.

An insert (2) of molded plastic or rubber, etc. inserted inside the tube (1) is provided with a flange or collar (3) in the inlet end (4) of the insert and a cylinder element or sleeve (5) extending with the inside of the sleeve with an inside 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 flexibility in desired directions. The shape and the ear tension as well as the elasticity of the membrane can be adapted so that sealing against return flows is achieved already in the initial position of the membrane. The diaphragm changes shape and is opened by the pressure fi of inflowing gas or liquid so that the diaphragm buckles in the diarnetral direction (10) from its initial or sealing position. When the pressure ceases, the diaphragm should preferably be able to self-tether back to its back-sealing operating position. For this purpose, a visible stick (1 1) or the like projecting from one side of the membrane, which reaches the inside of the tube, may initiate re-springing to the initial position of the membrane.

The insert according to fi gur 1 can alternatively have a floating 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 obliquely visible 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 (I2), 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 sun-spring-like form and elastically rounded 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 registered 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 spacer-milled or laser-cut gap (12), in which the foil or the membrane can slide between end positions which are marked or bounded by vulcanized strips (13, 14) on the foil on either side of the pipe wall (I). This to some extent leaking construction has the advantage that the membrane is easier to influence for deformation even at low working pressures.

Figures 5 a-c show in three views a modification of the invention where the beak valve is designed for use as an artificial heart valve. Here, not only the inclined diaphragm is elastic and visible, but also the parts of the housing (1) which fix the diaphragm (6).

Figure S a is a cross-sectional view showing that the cover (1) has an exactly arcuate cross-sectional shape, which should significantly increase the life of the non-return valve significantly. Figures 5 b-c constitute 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 formed 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 bending 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 oval arcuate according to Figure 5 a.

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

If the oblique inclination of the membrane does not follow a straight line but is slightly in a convex or concave arc, the resistance of the membrane to deformation in either direction may 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 additional ways within the framework of the inventive concept.

Claims (8)

538 244 5 PATENT REQUIREMENTS 1. l. Device in pipes (l), pipe inserts (2), pipe sockets, sleeves, hoses, ducts, covers and other housings for liquids such as liquids, drains, air, gases, odors, powders, etc., intended to provide minimal flow loss and with maximum throughput area within minimal external dimensions achieve unidirectional in the pipes buma fl fate by self-acting blocking of any return current, characteristics! in that the channel, the tube (1) or a detachable insert (2) inside the tube (1) comprises a metal foil or a tight and tensile membrane (6), the opposite tight connections to the tube (1) or the insert (2) coincide with a fictitious design plane, which is inclined in relation to the axial direction of the pipe (1) or the insert (2) from a point at the periphery of the pipe or insert to the height of the center line of the pipe (1) and that the diaphragm (6) is curved or bent for to be able to easily bend both upwards and downwards perpendicular to the construction plane so that the sealing end and free edge (8) of the membrane (6) between the connections near the center line of the pipe can form a sealing line towards the inside (10) of the pipe (1) or the insert (2) at full bulge in one direction, creating a conical space or an open bag with tight sides and a tight bottom which, at least when this bag is fully developed, prevents flow in one direction of the device, while the bulge of the membrane (6) Hold by means of a flow in the other direction allows this fate to be released in the permitted direction. Device according to claim 1, characterized in! in that the membrane (6) is flexible and elastic across or perpendicular to the connection plane of the membrane, but dull and non-extensible along the surface extension of the membrane (6), and is liquid and gas tight and provided with other fibers (9), fabric, lamentations, grooves, wave patterns, different layer layers or the like, as reinforcement or as shape reinforcement against one of the two possible bulging directions. Device according to claims 1 and 2, characterized in! in that the membrane (6) of at least one side or surface plane (7) is arranged with a pin (l 1) projecting from its plane, wire or strut, which via a suitable hole in the tube (1, 2) can limit, position-orient or return the bulge of the diaphragm (6) to the desired position. Device according to one of the preceding claims, characterized in that! in that at least one of the opposite connections of the membrane (6) to the tube (1) or the insert (2) can be slidably or movably arranged by means of grooves (12) or slots in the enclosing tube (1) or the insert (2). 535 244 é Device according to one of the preceding claims, characterized in that the initial bulging direction of the diaphragm (6) can be more or less fitting or biased by the connecting portions towards the pipe (1) or the pipe insert (2) being arranged obliquely towards one of the diaphragm bulges end position by means of inclined grooves (12) or gaps, and that the membrane can be displaceably or replaceably fixed by glue, screw, clamp, tape and rivet joints or the like. Device according to one of the preceding claims, characterized in! that the diaphragm (6) next to the connection to the inside of the tube (1) or the insert (2) is provided with bends, dryers or grooves in order to be able to bend more precisely and more easily mellan between the two end positions (10) of the outwardly vaulting diaphragm (6) and closer to the inside of the tube (1), in particular at the height of the sealing end (8) of the membrane (6). Device according to any one of the preceding claims, characterized in that the shape of the tube (1) or the insert (2) in connection with the curved end portion (8) and side connection of the membrane (6) is formed with a more angular or curved shape than the tube ( l) normal shape or radius, so that the membrane (6) can seal better against the surrounding tube (l), which may have a round, oval or angular shape or combination of such shapes, which comprises for example two flat opposite sides with a semicircular bottom profile with the purpose that the parallel walls of the duct (1) can contain brackets, grooves (12), gaps or guides for the membrane (6). Device intended for incorporation into a human organ for the control and unidirectional flow of blood fl the fate of a heart, duct, vessel or other cavity, characterizes! in that an elastic and preferably oval tube (1), housing or casing comprises an men visible but tensile membrane (6), the opposite tight connections to the housing coincide with a fictitious design plane, which is defined in relation to the axis direction of the housing from a point at the housing periphery up to the height of the center line of the housing and that the membrane (6) is curved to be able to bend in both directions relative to the plane of construction so that the free edge (8) of the membrane (6) between the connections to the pipe (1) or the housing can form a sealing line towards the inside (10) of the cover or against human tissue and that the vessel walls can be allowed to change shape so that the cover with membrane (6) supports and seals in connection with the free bulging edge (8) of the inclined membrane (6) when bulging in one direction, wherein a conical space similar to an open sack with dense sides and bottom arises which, when the sack is fully developed, prevents blood fl fate in one direction of the device, while the bulge of the membrane (6) in the opposite direction opens the fl channel of fate and allows the flow to be released in the permitted direction.