DE102010026308A1 - Elastomer diaphragm valve for insertion of e.g. cables for transporting electric media, has elastomer membrane providing support by carrier, which is made of gas-permeable and steam-permeable material as permeable membrane material - Google Patents

Abstract

The valve (1) has an elastomer membrane (10) comprising a sealing (12), which is detached from a cable passage (11) with a cable and/or line, pipe or hose guide by a stub seam (13). The elastomer membrane comprises the stub seam between the cable passage and the sealing. The elastomer membrane comprises tapered membrane surfaces (14, 15), which are recessed outside the cable passage. The elastomer membrane provides support by a large permeable or open-pored carrier. The carrier is made of gas-permeable and steam-permeable material as a permeable membrane material.

Description

The invention relates to an elastomer diaphragm valve for pressure equalization between rooms - in particular an elastomer diaphragm valve in conjunction with entries of cables / lines, guide chains, pipes or hoses for transporting different media - such as electrical, hydraulic, pneumatic, etc. - in housing for a higher degree of protection.

Regardless of the disciplines - such as electrics, hydraulics, pneumatics, etc. - energy-carrying cables, pipes or hoses, for example, are routed into housings for control, regulation and automation purposes, in order to carry out controlling or regulating functions there through switching operations. The enclosures often contain sensitive controls and controls and are often located in harsh machine environments. On this the measure is based on carrying out the function-loaded housing in a higher degree of protection. The seal of the housing against dust and dirt to the pressurized water is the result - ignoring the gas and water vapor tightness - which under the influence of different climatic environmental conditions such as changes in air pressure, humidity and temperature according to physical laws to a considerable and not negligible condensation in the Interior of the housing leads.

For the following consideration, it is important to differentiate between moisture and humidity. With water, water is defined in the liquid state of aggregation, and moisture is spoken in the presence of water vapor, ie water in the gaseous state. Higher protection enclosures are liquid-tight, but not gas or vapor-tight. The ambient air always has a proportion of water vapor; this proportion varies greatly between the climatic zones of the earth - temperate zone I, subtropical zone II and tropical zone III - and is u. a. depending on the air temperature and the air pressure and is measured as air humidity in%. The point 100% humidity is called the dew point. When air at 1 bar cools from 20 ° C (14.9 g water content) to 8 ° C (6.75 g water content), 8.15 g water per kg dry air are excreted. In the MOLLIER h-x diagram, the water content of the air is read off as a function of its temperature and relative humidity.

Water vapor-air mixture enters the housing when there is negative pressure in the housing. Pressure differences are in liquid but not gas / vapor-tight housings the result of temperature fluctuations, eg. B. day-night change, cooling by rain, switching off a light bulb / a heater, etc. With decreasing ambient temperature and the temperature inside the housing decreases, consequently also the internal pressure drops - at constant atmospheric pressure. Due to this, the flow of a water vapor-air mixture from the outside into the housing interior. If the internal temperature drops to the dew point - the line of all dew points - condensate forms inside. Condensation contains no salts, has a very low surface tension and penetrates the finest pores. With renewed heating of the internal air, the temperature and thus the internal pressure rises - at a constant external pressure - and there is a water vapor-air mixture flow from the inside to the outside. The condensate essentially remains inside the housing, because its evaporation only sets in when long inside / outside temperature equalization prevails and thus pressure equalization (to heat water 125 times the amount of energy is needed, as for the heating of air). The cycle is repeated at the next air cooling with renewed water vapor-air mixture transport from outside to inside and condensation inside the housing. Due to the delayed, incomplete evaporation of the condensate with internal air heating, the condensate collects and causes damage to the housing and control and regulating components.

So that no water vapor should pass into a housing, the pressure difference between the atmospheric pressure and the housing internal pressure must always be avoided and / or a temperature compensation must be created. A microporous liquid-tight, breathable, semi-permeable membrane makes the housing conditionally open to the atmosphere.

As a result, it is proposed to open the housing for the gas and water vapor permeability, in the semipermeable - liquid-blocking and gas and vapor-permeable - membranes in self-contained pressure compensation elements (DAE) or in conjunction with cable, hose or pipe entries for pressure equalization (DA) and thus ensure a condensate-free housing. Depending on the application, different plastic membrane materials are used for pressure equalization - such as polyethylene (PE), polypropylene (PP), polystyrene (PS) or polytetrafluoroethylene (PTFE) - wherein there is primarily a dependence on media compatibility, such as hydrophobic / -phile or oleophobic / -phile characteristics of the membrane material. The membrane usually consists of a very thin film, as it is already used for different purposes - clothing, shoes, medical technology, water desalination or cleaning, food and beverage industry, etc. - and the better processing because connected to a likewise permeable support material and possibly also mechanically punched as a composite material, processed and / or glued to a component.

Furthermore, diaphragm bushings ('Breathing' cable glands) made of plastic, steel, brass and stainless steel in the sizes M12 ... M63 (corresponding Pg- or industry-specific dimensions) are offered, the production of which is complex, but which must comply with the protection class (to 69K) are assembled. Combining the function of the housing pressure compensation with the cable guide makes sense - however industry-specific - since electrical switching and electronics housings always have a cable and / or line connection and hydraulic and pneumatic housings have a line, hose or pipe connection.

The membrane component usually consists of a very thin porous film, as it already comes for different separation purposes used - clothing, shoes, medical technology, water desalination or cleaning, food and beverage industry, etc. - and the better processing and handling because of a likewise permeable carrier material bonded to the sandwich and possibly also mechanically punched as a composite material, processed and / or mechanically multi-layered to a component is firmly connected.

The elastomeric membrane of the inventive novelty is preferably made of a rubber material - such. As silicone rubber - with good gas and water vapor transmission numbers, which is injected as a molded part and further processed as an insert or even in the 2K or 3K (component) spray process is processed directly with a vent to a ventilating and venting cable entry. Due to a required shape of the elastomeric membrane and the Shore hardness of the material, it can also be used for a z. B. finger-like / star-shaped or annular support come, which is encapsulated as an insert with the rubber material.

All plastic materials. are very or slightly permeable to gases, vapors or liquids; the permeability is also referred to as permeation or permeability, the crude solution or the feed is fed to the membrane, through the membrane passes the concentrate or the permeate, the different residual amount of crude solution and concentrate is the retentate. Particularly important are the permeability to water vapor, gases and vapors for liquids. High or low permeabilities of plastic films / membranes for certain substances may be required or undesirable depending on the field of application.

• – für die Gasdurchlässigkeit ca. 600 cm³ × mm/(m² × h × bar); d. h. Menge Luft, gemessen in cm³, die pro Stunde bei einer Druckdifferenz von 1 bar eine Membran von 1 m² Fläche und 1 mm Dicke durchdringt
• – für die Wasserdampfdurchlässigkeit ca. 40 g × mm/(m² × d); d. h. Masse Wasserdampf in g, die in 24 Stunden eine Membran von 1 m² Fläche und 1 mm Dicke durchdringt.

According to the present inventive novelty to the water air - consisting essentially of about 78% nitrogen (N ₂ ), about 21% oxygen (O ₂ ) and about 0.04% carbon dioxide (CO ₂ ) and water vapor, measured in relative humidity - be withdrawn; the ratio of the passage for plastics for N ₂ : O ₂ : CO ₂ is about 1: 4: 16. Another example relates to the permeability of water vapor to prevent condensation in housings tax and control systems. In almost all plastic films - with the exception of cellulose hydrate (CH), trade name cellophane or cellophane - the permeability decreases with the thickness. The membrane permeability of gas is determined according to the test standard DIN 53 380 in the unit [cm ³ / m ² × d × bar] and that of water vapor according to test standard DIN 53 122 in units of [g / m ² × d]. Magnitudes are for rubber, 50 shore hardness, 20 ° C temperature

• - for the gas permeability about 600 cm ³ × mm / (m ² × h × bar); ie amount of air, measured in cm ³ , which per hour penetrates a membrane of 1 m ² area and 1 mm thickness at a pressure difference of 1 bar
• - For the water vapor permeability about 40 g × mm / (m ² × d); ie mass of water vapor in g, which penetrates a membrane of 1 m ² area and 1 mm thickness in 24 hours.

Hydrophobic plastics absorb no water vapor, so there is no influence on the gas permeation; Hydrophilic plastics can absorb significant amounts of water vapor, which increases the size of the gas passage.

• 1. Durchgang durch porenfreie Kunststoffschichten infolge Lösungsdiffusion bei a) und b) außerhalb der Poren im die Poren umschließenden Kunststoff (Permeation, Normalfall)
• 2. Durchgang durch größere Poren und Fehlstellen infolge Fick'scher Diffusion a) wobei die Poren die gesamte Membrandicke durchdringen, wie offenporiger Schaum oder Perforierungen oder poröse Membranen b) wobei die Poren sich innerhalb der Membran befinden, wie geschlossenporiger Schaum oder poröse Membranen (Durchmesser der Poren > freie Weglänge der Gasmoleküle)
• 3. Durchgang durch Mikroporen infolge Knudsen-Diffusion a) wie bei mikroporösen Membranen b) in den eingeschlossenen Poren wie bei mikroporösen Membranen (Porendurchmesser < freie Weglänge der Gasmoleküle)

At the same total pressure inside and outside of two membrane-separated spaces, three gas passage mechanisms can be described by plastics, such as

• 1. Passage through pore-free plastic layers due to solution diffusion in a) and b) outside the pores in the plastic surrounding the pores (permeation, normal case)
• 2. Passage through larger pores and voids due to Fick's diffusion a) where the pores penetrate the entire membrane thickness, such as open cell foam or perforations or porous membranes b) where the pores are within the membrane, such as closed cell foam or porous membranes (diameter the pores> free path of the gas molecules)
• 3. Passage through micropores due to Knudsen diffusion a) as with microporous membranes b) in the enclosed pores as in microporous membranes (pore diameter <free path of the gas molecules)

At total pressure difference between the rooms is a
to 1. the solution diffusion
to 2. a Poiseuille flow in place of Fick's diffusion; leads to pressure equalization (DA) in a relatively short time (seconds to days)
to 3. the Knudsen diffusion.

The gas diffusion during passage through micropores is not temperature dependent.

The passage mechanisms for water vapor correspond to those of the gas passage. At very high water contents can also occur in the pores because of capillary condensation Kapillarwasserzug as a transport mechanism. In the solution diffusion on passage of gases, the gas passage increases linearly with the partial pressure difference of the continuous gas, which is not true due to the sorption of elastomeric membranes with water vapor which is often nonlinear with the partial pressure of the water vapor; a linear conversion at the driving gradient of the water vapor partial pressure - or the relative humidity - is not permitted.

In addition to a fairly crude mechanical perforation, the laser technology offers the possibility of conferring a microperforation of a film or a membrane that is specifically adapted to the respective application purpose. The hole size and the number of holes is dimensioned so that air circulation is possible, but moisture is retained. Other methods are needle technology and flame perforation. The laser is characterized by smaller holes, which are tear-proof by a micro-melt edge. In addition, the laser operates contactless and process-safe at high web speeds, against the risk of breakage in needles.

A change in the relation of the gas passage is only possible by introducing pores in the films / membranes and to be able to influence the patency targeted, both in terms of volume and in the ratio of gases with each other. The permeability is composed of the solution diffusion of the film / membrane and the Fick'schen or Knudsen diffusion of the micropores and the total passage and the relation of the passages are determined by a targeted selection of both influences. Microperforation can be achieved by mixing in fine mineral fillers with molecular diffusion channels in the particle or at the particle / plastic contact point, which can also be influenced by stretching the film (controlled atmosphere packaging - Controlled Atmosphere Package [CAP] / Housing). CAH]).

In the following, the prior art of elastomer diaphragm valves for pressure equalization between rooms - in particular an elastomer diaphragm valve in connection with introduction of cables, lines, guide chains, pipes or hoses for transporting different media - such as electrical, hydraulic, pneumatic, etc. - Appreciated in housing for a higher degree of protection; According to the prior art, depending on the application, a variety of types of elastomeric diaphragm valves for pressure equalization between rooms in use.

According to the international application WO 2000/76 634 a gas separation device in the form of a permeable porous material for separating a gas mixture by selectable pore sizes is presented, wherein pores are formed from at least one nanostructured component. By selecting the specific nanostructured component, the porous material can be tailored to contain pores of a predetermined size, which allow certain gases to pass through and prevent the passage of other gases. The gas-permeable porous material can be shaped to meet the design requirements of the equipment associated with the material. The separation of a gas mixture by selectable pore sizes is not provided.

It is also known that microtiter plates are covered with silicone mats, silicone has an increased gas permeability over other common vessel materials, such as polyethylene terephthalate (PET). The gas exchange takes place only over the cover, the remaining surface of the microtiter plate is gas-impermeable. Due to their lack of hardness and the tendency to warp, vessels made of silicone are unsuitable for machine handling and centrifuging. Silicone apparatus, equipment and accessories are to be stabilized for handling by carrier material.

The European patent EP 1 358 926 presents products for the gas exchange and separation of biological materials or the separation of mixtures using nanocomposites. The molding for the gas exchange and the separation of microorganisms and / or biomolecules has at least one wall at least partially made of a gas-permeable and for microorganisms and / or biomolecules impermeable nanocomposites containing at least one polymer and at least one cage molecules comprising nanofiller, said Formed part is a container with at least one opening having a receptacle which is wholly or partially bounded by the wall so that it allows a gas exchange, which does not pass through the opening. In the present inventive novelty no microorganisms and / or biomolecules are separated and at the same time to allow gas exchange with the environment.

The European patent application EP 986 290 / German patent specification DE 198 40 761 discloses a method of making a moisture-impermeable pressure compensating element for a moisture-proof housing accommodating an electronic package in which at least one microfine bore is introduced into the housing wall by means of a laser. By laser drilling microfine openings can be introduced into the housing wall whose diameter reaches approximately the mesh density of the previously used woven fabrics and thus prevents the penetration of water droplets; a pressure equalization through these microfine openings is possible. With laser technology, a micro-perforation adapted to the purpose of the application can be carried out; the hole size and the amount of holes are adjusted so that the gas / vapor exchange is given, but the moisture is conserved due to the molecular size and the partial pressure.

The European patent EP 1 746 698 / German patent specification DE 10 2005 035 210 / Utility model DE 20 2005 011 301 introduces a cable bushing with diaphragm valve. In electrical installation technology, in plant construction and in traffic and vehicle technology, housing of higher electrical protection is installed in difficult climatic conditions to prevent the ingress of dust and water. Depending on the climatic conditions, condensate forms in the housings depending on changes in air pressure, humidity and temperature. By installing a cable gland with a semipermeable membrane, the housing is opened climatically and condensation is prevented. The structure of the membrane element of thin membrane membrane with one or more carriers provided as a membrane assembly is expensive to produce and difficult to handle in logistics and assemblage.

The European application EP 7785520 / German registration DE 10 2006 034 224 / Utility model DE 20 2006 011 956 proposes a different design for the cable gland while maintaining the membrane component.

The German patent application DE 10 2006 062 690 / Utility model DE 20 2006 019 807 is devoted to the above statements a hose / pipe fitting with diaphragm valve and the German patent application DE 10 2007 001 584 / Utility model DE 20 2007 000 864 handle a cable connector with diaphragm valve. Again, the membrane components are logistical and manufacturing difficult to handle inserts.

According to the German patent application DE 10 2008 018 900 / Utility model DE 20 2008 005 548 is proposed a pressure equalization fitting based on a tube membrane and with adjustable volume compensation. The tube membrane is a component in which the semipermeable membrane film and the carrier material are installed to form a hollow cylinder and the feed passes from the outside to the inside of the tube membrane - permeate - or the feed is passed into the tube membrane and through the wall and the permeate outside the hollow cylindrical Membrane is available. About an adjustment, the usable membrane area can be changed and the pressure compensation assembly better adapted to the climatic boundary conditions. Also, the production of the tube membrane is expensive, especially when it comes from different industry standard sizes M12 ... M63.

The German disclosure DE 10 2007 003 752 / Utility model DE 20 2006 000 932 discloses a one-piece cable entry with strain relief for the wall opening / bore of a housing consisting of several, made of hard elastic material, annularly held together claws, which together have approximately the geometry of a truncated cone and bend through the centrally inserted cable to the outside, so that whose undercut is wedged on the back of the housing with the wall and on the front of the housing a soft-elastic flange with lip spans the hard-elastic framework and seals the cable entry on the one hand against the housing front wall and on the other hand against the centrally inserted cable. No pressure equalization is provided for this 2K cable entry.

All published publications are only partially or not at all suitable for the specific use of an elastomer diaphragm valve for pressure equalization between rooms - in particular not an elastomer diaphragm valve in connection with introduction of cables, lines, guide chains, pipes or hoses for transporting different media - such as Electrical, hydraulic, pneumatic, etc. - in housing for a higher degree of protection.

The invention is therefore based on the object, a device according to the preamble of claim 1, an elastomer diaphragm valve for pressure equalization between rooms - in particular an elastomer diaphragm valve in connection with the introduction of cables, lines, guide chains, pipes or hoses for the transport of various media - such as electrical, hydraulic, pneumatic, etc. - to create housing for a higher degree of protection.

This object is achieved by the characterizing features of claim 1; to advantageous embodiments, the dependent claims.

The aim is to build a cable entry, which on the one hand protects the cable against the housing wall and possibly also provides a strain relief and also has the function of pressure equalization between the interior and exterior of a housing with mounted cable entry held. According to an advantageous embodiment, an elastomeric diaphragm valve according to the above embodiments is provided - preferably made of a rubber material with good gas and water vapor transmission rates, which are molded as a molding and further processed as an insert or 2K or 3K spray directly with a vent to a be - and venting cable entry is processed. Due to a required shape of the elastomeric membrane and the Shore hardness of the material, it can also be used for a z. B. finger-like / star-shaped or annular or coarsely permeable or open-pored carrier, which is encapsulated as an insert with the rubber material.

• – eine vorbereitete Durchtrittsstelle für Kabel, Rohr, Schlauch mit Abrißfuge
• – eine 'atmungsaktive' Gas- und Wasserdampf-Durchtrittsstelle
• – einen Träger oder eine tragfähige Schicht

ergänzt.In a further advantageous embodiment, the basic principle of an elastomer diaphragm valve made of rubber material with good gas and water vapor transmission rates to

• - A prepared passage for cable, pipe, hose with Abrißfuge
• A 'breathable' gas and water vapor transmission point
• A support or a load-bearing layer

added.

• – Einstückige Kabeleinführung mit Membranventil
• – Adapter mit Membran-Dichtring und Luftauslaß
• – Stopfen mit Membran-Dichtring
• – Membranelement, eingespritzt
• – Membranelement, als Formteil eingelegt.

A further embodiment of the invention provides that the elastomer diaphragm valve in conjunction with entries of cables, lines, chains, pipes or hoses for transporting different media - such as electrical, hydraulic, pneumatic, etc. - finds in housing for a higher degree of protection input , as

• - One-piece cable entry with diaphragm valve
• - Adapter with membrane sealing ring and air outlet
• - Stopper with membrane sealing ring
• - Membrane element, injected
• - Membrane element, inserted as a molded part.

The subject matter of the invention will be further clarified below with reference to the accompanying drawings of exemplary embodiments. Show it

1 Elastomeric membrane

1a ) Membrane, schematic diagram

1b ) Membrane, cable / tube / hose entry

1c ) Membrane with carrier

1d ) Membrane, principle, top view

1e ) Membrane, principle, side view

1f ) Membrane with cable, top view

1g ) Membrane with cable, side view

1h ) Membrane, principle, perspective

1i ) Membrane with cable, perspective

2 One-piece cable entry with diaphragm valve

3 Valve adapter for cable / pipe, pipe and hose glands

4 Valve plug with cable / pipe, pipe, hose feedthrough

5 Valve feedthrough for cable / pipe, pipe, hose, sprayed or inlaid

The same and equivalent components of the embodiments are each provided with the same reference numerals in the figures.

The description of the device according to the invention will be continued with reference to the explanation of the figures.

1 engages in a sequence of images a) ... i) with the cable or pipe, pipe or hose inlet with elastomeric membrane 1 wherein the selected cylindrical geometry is only one exemplary embodiment.

As from the schematic diagram 1a ), there is the cable entry with elastomeric membrane 1 from a molded part elastomeric membrane 10 which passes a preformed cable passage 11 comprising, consisting of a seal 12 and a tear gap 13 , This shape allows the gasket not to be pre-punched and the cable / conduit, tube or hose 100 can be introduced dull, which is ensured by the Abrißfuge that the seal does not crack undefined and the tightness is no longer given to the cable sheath out. This also applies in the event that the executing installer or fitter vorlocht the seal. A partial surface of the elastomer surface has a material taper 14 with the membrane 15 on, which represents the actual gas and water vapor passage area for the pressure compensation and is to be measured as such.

1b ) shows the shape of the elastomeric membrane 1 with cable / line, pipe or hose entry 100 , The membrane nestles against the cable sheath and seals between the cable surface and the tearing gap; this is where the seal has become 12 from the tear gap 13 solved.

Depending on the application and nature of the elastomeric membrane 1 - This affects especially the stiffness of the membrane material according to size and Shore hardness - is in accordance with 1c ) the membrane by a coarsely permeable or open-pored carrier 16 supported by encapsulation. The structure of the elastomeric membrane 1 can be different depending on the requirements, such as a layering M (membrane) -T (carrier) or TM or multi-component as TMT, etc. The component structure can also be achieved by two- or multi-component plastic injection; membrane 10 or carrier 16 can also represent prefabricated inserts. In a further advantageous embodiment, the actual membrane is also provided 15 and the membrane body 10 made of different materials.

The top view in 1d ) shows in the cylindrical elastomeric membrane 1 clearly the area distribution of the elastomeric membrane 10 to the actual passage membrane area 14 . 15 , The space and area distribution is made here by way of example.

1e ) shows a side view of the unpopulated elastomeric membrane 1 . 10 ; clearly the cable passage is to be identified.

1f ) and 1g ) show the cable-tipped elastomeric membrane 1 . 10 in plan view and side view.

1h ) and 1i ) each show a perspective view of the elastomeric membrane 1 . 10 without and with cable assembly; The illustrated thin cutting line should help to better absorb the spatial extent of the elastomeric membrane.

In a preferred embodiment, the elastomeric membrane can advantageously be used as a 2K plastic molded part or as a molded insert in any type of ventilated housing (or generally ventilated space) to promote the exchange of gas and water vapor and to prevent condensation. Prevent or reduce education. Due to the possibility of plastics processing in the multi-component process, handling costs - despite perhaps slightly increased tooling costs - can be reduced to a considerable extent.

The following figures show, in random order, a number of applications of differently shaped elastomeric membranes for gas and water vapor exchange primarily in / out of housings (or generally between rooms).

2 shows a one-piece cable entry 2 with diaphragm valve 120 (Similar to the above publications disclosure DE 10 2007 003 752 / Utility model DE 20 2006 000 932 ). The one-piece cable entry combines the advantages of a diaphragm sleeve with those of a cable gland - a simple cable entry through the soft component with a given strain relief. The assembly of the one-piece cable entry is made from outside a housing or a wall by plugging and locking.

The one-piece cable entry 2 is a hollow cylinder made of hard and soft plastic parts and consists of an annular flange 20 Made of hard plastic, connected with a hollow cylinder cutout 21 - also made of hard material - the segmented via an undercut 22 in frustoconical claws 23 with internal holding teeth 26 goes over (not shown), the claw end 24 in a ring spring 27 made of soft plastic. Between adjacent claws is a channel 25 formed, which conducts the soft plastic in the 2K process from the flange to the annular spring or vice versa.

Within the flange - and held by this - is a circular, gas and water vapor permeable membrane elastomeric plane 120 spanned the essential characteristics of the under 1 has described. The elastomeric membrane has a cable passage 121 , a seal 122 as well as a tear gap 123 on. Outside the cable passage is within a recess, a taper 124 with membrane 125 , which allows the passage of gas and water vapor and the pressure equalization at this point preferably. On the side facing away from the flange interior is a hollow cylindrical collar or a lip 126 Made of plastic soft material. If the one-piece cable entry outside the hollow cylinder cutouts 21 pressed into a bore of a housing or a wall, provides the undercut 22 inside for a safe Hold and the outside seals the lip 126 in accordance with a higher degree of protection. The elastomeric membrane 120 with sealing lip 126 Depending on the Shore hardness of the elastomer by an additional porous carrier 127 stabilized (not shown).

Thanks to this further advantageous embodiment, the already optimized one-piece cable entry is enriched by the function of the gas and water vapor exchange and pressure equalization and their range of applications even wider.

• – Kabel-/Leitungs-, Rohr- und/oder Schlauchverschraubung
• – Abschirmung und EMV(elektromagnetische Verträglichkeit)-Schutz
• – Zugentlastung für Kabel/Leitung und ggf. Rohr und Schlauch
• – Drehgelenk für bewegliche Teile

um die weitere Funktion

• – Druckausgleich (DA)

erweitert.In another application shows 3 an elastomer diaphragm valve pressure equalization adapter (DAA) 3 with elastomeric membrane 130 for cable / pipe, pipe or hose fittings. The pressure compensation adapter is an accessory for all cable / pipe, pipe and / or hose fittings; The adapter is screwed sealingly on the one hand in a housing wall and on the other hand receives a cable / pipe, pipe or hose fitting. Such a built-fitting kit is next to the functions

• - Cable / line, pipe and / or hose fitting
• - Shielding and EMC (Electromagnetic Compatibility) protection
• - Strain relief for cable / pipe and possibly pipe and hose
• - Swivel for moving parts

for the further function

• - pressure compensation (DA)

extended.

In detail, the pressure equalization adapter 3 with diaphragm valve 130 like a double nipple in an adapter housing 30 constructed in the axial direction about half an external thread 35 with an internal bore 2 36 for the housing / wall receptacle and another, the bore 2 extending bore. 1 34 , an internal thread 31 as well as an external hexagon 32 , A special feature are the holes arranged in the radial direction in the region of the hexagon 33 which operate as gas and water vapor vent holes for pressure equalization (DA).

At the axial interface between the outer and inner threads, approximately at the level of the housing wall (in the installed state) is the approximately circular elastomeric membrane 130 arranged. The elastomeric membrane has a cable passage 131 , a seal 132 as well as a tear gap 133 on. Outside the cable passage is within a recess, a taper 134 with membrane 135 , which allows the passage of gas and water vapor and the pressure equalization at this point preferably. In addition, the DA adapter receives a sealing / O-ring 136 , which is molded together with the membrane, unless I am dealing with two insert / mold parts. The elastomeric membrane 130 with sealing / O-ring 136 Depending on the Shore hardness of the elastomer by an additional coarsely permeable or open-pored carrier 137 stabilized (not shown).

The Elastomer Diaphragm Valve Pressure Compensating Adapter (DAA) 3 with elastomeric membrane 130 for cable / pipe, pipe or hose fittings represents an important accessory in such a fitting kit dar. Due to its very flat design, the adapter seems rather unobtrusive when installed with a screw.

According to another embodiment of the inventive novelty shows 4 an elastomer diaphragm valve plug 4 with elastomeric membrane 140 for cable / pipe, pipe or hose feedthroughs. The pressure equalization (DA) plug is an accessory for all cable / conduit, pipe and / or hose fittings; the plug is screwed sealingly on the one hand in a housing wall and on the other hand receives a cable / a pipe, a pipe or a hose sealing or is used only as a plug. A fitting kit constructed in this way is supplemented by the function of a DA plug. The DA plug 4 with membrane 140 can be compared with the one-piece cable entry 2 with elastomeric membrane 120 designed for higher degrees of protection.

In particular, the pressure equalization plug 4 with diaphragm valve 140 in a plug housing 40 constructed, has an external thread in the axial direction 43 with an internal bore 2 44 for the housing / wall receptacle and another, the bore 2 extending bore. 1 41 as well as an external hexagon 42 ,

According to a further embodiment, at the axial interface between external thread and hexagon, approximately at the level of the housing wall (in the installed state), the approximately circular elastomeric membrane 140 arranged. The elastomeric membrane has a cable passage 141 , a seal 142 as well as a tear gap 143 on. Outside the cable passage is within a recess, a taper 144 with membrane 145 , which allows the passage of gas and water vapor and the pressure equalization at this point preferably. In addition, the DA plug receives a sealing / O-ring 146 , which is molded together with the membrane, unless I am dealing with two insert / mold parts. The elastomeric membrane 140 with sealing / O-ring 146 Depending on the Shore hardness of the elastomer can be through an additional coarse or permeable open-pored carrier 147 stabilized (not shown).

The Elastomer Diaphragm Valve Pressure Compensating Plug (DAS) 4 with elastomeric membrane 140 for cable / pipe, pipe or hose fittings represents an important accessory in a screw connection kit.

In a further embodiment of the inventive novelty shows 5 an elastomeric diaphragm valve bushing 5 with elastomeric membrane 150 - molded as a molded part and inserted or molded in 2K process - for cable, pipe or hose feedthroughs. The pressure equalization (DA) bushing is an accessory for all cable, pipe and / or hose fittings; the implementation is on the one hand inserted sealingly in a housing wall, glued or molded and on the other hand takes a cable / a pipe, a pipe or a hose sealing or is used only as a closure. Such a construction kit is supplemented by the function of a DA implementation.

In detail, the DA implementation 5 with diaphragm valve 150 in a housing 50 is built up, through the housing wall 51 guided and covers a wall opening or a housing bore 52 from. The DA feedthrough may also be through a recess in the wall opening or housing bore 53 be admitted.

In a further embodiment, approximately at the level of the housing wall (in the axial direction and in the installed state), the approximately circular (exemplary) elastomeric membrane 150 arranged. The elastomeric membrane has a cable passage 151 , a seal 152 as well as a tear gap 153 on. Outside the cable passage is within a recess, a taper 154 with membrane 155 , which allows the passage of gas and water vapor and the pressure equalization at this point preferably. Preferably, the DA plug receives a sealing / O-ring 156 (not shown), which is injection-molded together with the membrane, as long as I am not dealing with two inserts / moldings, when the membrane is additionally sealed on the back by means of a disk. The elastomeric membrane 150 with sealing / O-ring 156 Depending on the Shore hardness of the elastomer by an additional coarsely permeable or open-pored carrier 157 stabilized (not shown).

The Elastomer Diaphragm Valve DA Feedthrough (DAD) 5 with elastomeric membrane 150 for cable / pipe, pipe or hose fittings represents an important accessory in a screw connection kit.

The achievable with the present invention consist in particular in the fact that the important function of pressure equalization between rooms - such as housing - through the opening of the otherwise sealed spaces for gas and / or water vapor permeability in conjunction with commercial cable / line, pipe or Hose fittings is possible. The elastomeric diaphragm valve has characteristically a cable passage and a membrane for the gas and water vapor passage - pressure equalization - on.

Advantageous developments of the invention are the subject of the dependent claims; The numerous possibilities and advantages of the embodiment of the invention are reflected in the number of patent claims.

LIST OF REFERENCE NUMBERS

1

Cable / line, pipe and / or hose entry with elastomeric membrane

10

Elastomeric membrane

11

Cable passage

12

poetry

13

Abrißfuge

14

Recess, rejuvenation

15

membrane

16

carrier

100

Cable / pipe, pipe, hose

2

One-piece cable entry

20

flange

21

Hollow cylinder-Neck

22

undercut

23

claw

24

jaw end

25

channel

26

Holding tooth (not shown)

27

feather

120

Elastomeric membrane

121

Cable passage

122

poetry

123

Abrißfuge

124

Recess, rejuvenation

125

membrane

126

lip

127

Carrier (not shown)

3

Adapter with diaphragm valve

30

adapter housing

31

inner thread

32

External hexagon

33

housing bore

34

Bore 1

35

external thread

36

Bore 2

130

Elastomeric membrane

131

Cable passage

132

poetry

133

Abrißfuge

134

Recess, rejuvenation

135

membrane

136

Sealing / O-ring

137

Carrier (not shown)

4

Plug with diaphragm valve

40

plug housing

41

Bore 1

42

hexagon

43

external thread

44

Bore 2

140

Elastomeric membrane

141

Cable passage

142

poetry

143

Abrißfuge

144

Recess, rejuvenation

145

membrane

146

Sealing / O-ring

147

Carrier (not shown)

5

Feedthrough with diaphragm valve

50

casing

51

housing wall

52

Wall opening, bore

53

recess

150

Elastomeric membrane

151

Cable passage

152

poetry

153

Abrißfuge

154

Recess, rejuvenation

155

membrane

156

Sealing / O-ring (not shown)

157

Carrier (not shown)

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 2000/76634 [0020]
• EP 1358926 [0022]
• EP 986290 [0023]
• DE 19840761 [0023]
• EP 1746698 [0024]
• DE 102005035210 [0024]
• DE 202005011301 U [0024]
• EP 7785520 [0025]
• DE 102006034224 [0025]
• DE 202006011956 U [0025]
• DE 102006062690 [0026]
• DE 202006019807 U [0026]
• DE 102007001584 [0026]
• DE 202007000864 U [0026]
• DE 102008018900 [0027]
• DE 202008005548 U [0027]
• DE 102007003752 A [0028, 0062]
• DE 202006000932 U [0028, 0062]

Cited non-patent literature

• DIN 53 380 [0011]
• DIN 53 122 [0011]

Claims (10)

Elastomer Diaphragm Valve for pressure equalization (DA) between rooms - in particular an elastomer diaphragm valve in connection with the introduction of cables / lines, guide chains, pipes and / or hoses for the transport of different media - such as electrics, hydraulics, pneumatics, etc. - in housing for a higher degree of protection, characterized in that - the elastomer diaphragm valve ( 1 ) made of an elastomeric membrane ( 10 ) - the elastomeric membrane ( 10 ) a molded cable passage ( 11 ) - the elastomeric membrane ( 10 ) about a seal ( 12 ), which may occur in the event of cable / line, pipe or hose entry ( 100 ) by means of the tear-off joint ( 13 ) from the cable passage ( 11 ) releases - the elastomeric membrane ( 10 ) between cable passage ( 11 ) and seal ( 12 ) a tear gap ( 13 ) - the elastomeric membrane ( 10 ) outside the cable passage ( 11 ) via recessed, tapered membrane surfaces ( 14 . 15 ) - the elastomeric membrane ( 10 ) a support by a coarsely permeable or open-pored carrier ( 16 ) - and the carrier material ( 16 ) much more gas and water vapor permeable than the likewise permeable membrane material ( 10 ). Elastomer diaphragm valve for pressure equalization between rooms according to claim 1, characterized in that the membrane material ( 10 ) Has gas and water vapor permeabilities according to test standard, which correspond to the comparative values of semipermeable membrane films for this application. Elastomer diaphragm valve for pressure equalization between spaces according to at least one of claims 1 to 2, characterized in that the elastomeric diaphragm material ( 10 ) its required gas and water vapor transmission characteristics by additives - such as crystallizable polymers, finest mineral fillers, pore material, nanomaterial - learns or microporous perforated by mixing finest mineral fillers with molecular diffusion channels in the particle or at the contact point particles / plastic or with help a nanostructured component contains pores of a predetermined size for separating a gas or vapor mixture. Elastomer diaphragm valve for pressure equalization between spaces according to at least one of claims 1 to 3, characterized in that the elastomeric diaphragm material ( 10 ) learns its required gas and water vapor transmission characteristics by additional processing - as undrawn or oriented by stretching - learns. Elastomer diaphragm valve for pressure equalization between rooms according to at least one of claims 1 and 4, characterized in that the elastomeric membrane ( 10 ) is molded as a molded part and further processed as an insert or processed in 2K or xK (component) spraying (x> 2) directly with a vent / vent to a pressure equalization (DA) cable / line, pipe or hose entry. Elastomer diaphragm valve for pressure equalization between rooms according to at least one of claims 1 to 5, characterized in that the elastomeric membrane ( 10 ) as an elastomeric membrane ( 120 ) with molded sealing lip ( 126 ) and spring ( 27 ) in the integral pressure equalization (DA) cable entry ( 2 ) is used. Elastomer diaphragm valve for pressure equalization between rooms according to at least one of claims 1 to 5, characterized in that the elastomeric membrane ( 10 ) as an elastomeric membrane ( 130 ) with molded sealing / O-ring ( 136 ) in the pressure equalization (DA) adapter ( 3 ) is used. Elastomer diaphragm valve for pressure equalization between rooms according to at least one of claims 1 to 5, characterized in that the elastomeric membrane ( 10 ) as an elastomeric membrane ( 140 ) with molded sealing / O-ring ( 146 ) in the pressure equalization (DA) plug ( 4 ) is used. Elastomer diaphragm valve for pressure equalization between spaces according to at least one of claims 1 to 5, characterized in that the elastomeric membrane ( 10 ) as an elastomeric membrane ( 150 ) - also with molded sealing / O-ring ( 156 ) (not shown) - in the pressure equalization (DA) feedthrough ( 5 ) is used. Elastomer diaphragm valve ( 1 ) for pressure equalization between rooms according to at least one of the preceding claims 1 to 9.

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