DE202017100042U1 - check valve - Google Patents

Abstract

A check valve comprising a valve housing (2) in which is formed a flow passage (3) having a vertical passage portion (3a) and extending between an outlet port (4a, 4b) and an inlet port (5a, 5b) of the valve body (2) , and having a vertical channel section (3a) associated with the locking means for closing the vertical channel portion (3a) having a vertical channel portion (3a) surrounding the valve seat (6) and a valve body (7) in the valve housing (2) between a Opening position and a closed position in which the valve body (7) with the valve seat (6) sealingly comes into abutment to close the vertical channel portion (3a), is movable, characterized in that at least one outlet channel and / or an inlet channel Associated with connecting means (11), via which a the connecting piece (12) assigned to the respective channel section and inserted into the latter SBAR to the valve housing (2) is connectable.

Description

The present invention relates to a check valve having a valve housing in which a flow channel is formed, which has a vertical channel portion and extending between an outlet opening and an inlet opening of the valve housing, and having a vertical channel portion associated with the locking means for closing the vertical channel portion, the the vertical channel portion surrounding the valve seat and a valve body which is movable in the valve housing between an open position and a closed position in which the valve body sealingly abuts the valve seat to close the vertical channel portion is movable.

Check valves of this kind are for example from the EP 1 319 878 B1 are known and installed in fluid lines to ensure that in the conduit a fluid can only lie in one direction of flow. In particular, such check valves are used in the low pressure area to supply sanitary facilities fresh water and remove dirty water from them.

Often there is very little space available for the installation of such check valves. This is the case in particular in the galleys and toilets of commercial aircraft.

The object of the invention is therefore to design a check valve of the type mentioned in such a way that it requires a small footprint and is flexible in use.

This object is achieved in a check valve of the type mentioned above in that at least one outlet channel and / or inlet channel portion associated with connecting means via which a respective channel portion assigned and inserted into this connection piece is releasably connectable to the valve housing. In this case, at least one outlet channel section and / or inlet channel section is preferably provided with an internal thread as connection means into which a connecting piece can be screwed or screwed. This embodiment is based on the consideration that valve housing does not provide directly with connection means for supply lines, but merely provide connection means, via which a corresponding connection piece for a supply line to the valve housing can be releasably attached. This allows us to use, as needed, differently shaped connecting pieces, which can each be mounted on the valve body during its installation.

According to one embodiment of the invention it is provided that the valve housing has a lower housing part and an upper housing part and wherein the lower housing part and the upper housing part are rotatable relative to each other about a common vertical axis of rotation and releasably connected in defined relative positions, and that in a housing part at least one outlet channel section is formed, which extends transversely to the axis of rotation between an outlet opening provided in the peripheral wall of the housing part and the vertical channel section, and / or in that a housing section an inlet channel section is formed which extends transversely to the axis of rotation between one in the circumferential wall the upper housing part provided inlet opening and the vertical channel portion extends.

In this embodiment, the inlet openings are formed on the one housing part and the outlet openings on the other housing part. Characterized in that the two housing parts are rotatable relative to each other, different rotational positions of the inlet and outlet ports to each other can be realized when the inlet and / or outlet openings are formed in the lateral peripheral wall. In this way, the housing parts can be aligned with one another in such a way that the inlet and outlet openings of the check valve are optimally placed for the respective installation conditions.

In a manner known per se, the upper housing part and the lower housing part can be screwed together. In this case, it is possible to provide connecting flanges with mutually corresponding passage openings for connecting screws on the two housing parts. By the number and positioning of the passage openings in the connecting flanges, the pitch is then given, with which the two housing parts can be rotated against each other.

Alternatively, it is possible to put the two housing parts axially together in the direction of the axis of rotation and to screw them together in the axial overlapping area of the two housing parts. For this purpose, mutually corresponding bores are then formed in the two housing parts. In this case, the bores on that housing part, which lies in the assembled state inside, formed as threaded holes into which mounting screws can be screwed. Other types of attachment are also possible.

According to one embodiment of the invention, at least one outlet channel section is formed in the lower housing part, which extends in the Direction of the rotation axis between an opening provided in the bottom wall of the lower housing part and the vertical channel portion or forms an end portion thereof, and / or that in the upper housing part, an inlet channel portion is formed, which is in the direction of the rotation axis between one in the top the outlet opening provided in the upper housing part and the vertical channel section or forms an end section thereof. In this embodiment, an inlet / outlet opening is provided in at least one of the two housing parts, which is aligned coaxially with the axis of rotation. In principle, it is possible if only one inlet or outlet opening is provided in each of the two housing parts, wherein one of the openings in the peripheral wall of the valve housing must be provided, while the opening in the other housing part either in the peripheral wall or coaxially to the Rotary axis can be formed. Preferably, however, two inlet or outlet openings are provided in each housing part, wherein in each case one opening is aligned coaxially to the axis of rotation and the other is provided in the peripheral wall of the valve housing. In this way, the variability of the check valve is maximized.

In a further embodiment of the invention, an outlet channel section and an inlet channel section are provided with a connecting piece and each further inlet opening and / or outlet opening is sealingly closed by a cover which is inserted into the respective inlet opening or outlet opening and detachably connected to the valve housing via the connecting means. in particular screwed into the respective outlet channel section / inlet channel section.

In this embodiment, the connecting means for attaching connecting pieces to the valve housing are thus also used to provide on the valve housing lid, which close the unneeded inlet and outlet openings.

In particular, when the connecting means are formed as internal threads, it is expedient to secure in the inlet and outlet openings used connecting piece and / or cover against rotation about the axis of the respective outlet or inlet channel section. In a simple way, it is possible to screw the components to the valve body.

Furthermore, according to an embodiment of the invention, it is provided that the connecting pieces and / or the covers are secured by securing means, which can be detachably fastened to the valve housing, in particular screwed tight. In this case, the securing means on the one hand and the connecting pieces and / or the cover on the other hand be configured such that they come into frictional and / or positive engagement in order to prevent a rotation.

Furthermore, each of the inlet and outlet openings provided in the circumferential wall of the valve housing can each be associated with a flattening in the peripheral wall on which a radial projection or collar of the connection piece / cover inserted into the respective inlet or outlet opening comes into contact.

Furthermore, the upper housing part and the lower housing part may be centered in the usual way to each other. Finally, the valve seat is expediently formed in the upper housing part and the valve body is formed as a ball, which consists of a material floatable in water.

• 1 in perspektivischer Ansicht ein Rückschlagventil gemäß der vorliegenden Erfindung,
• 2 das Rückschlagventil aus 1 in Draufsicht,
• 3 das Rückschlagventil in geschlossenem Zustand in einer Längsschnittansicht,
• 4 die Anordnung aus 3 bei geöffnetem Rückschlagventil,
• 5 in perspektivischer Darstellung das Rückschlagventil in einer zweiten Einsatzvariante,
• 6 das Rückschlagventil aus 5 in Draufsicht,
• 7 in Längsschnittansicht das Rückschlagventil aus 5 im geschlossenen Zustand,
• 8 die Längsschnittansicht aus 7 bei geöffnetem Ventil,
• 9 in perspektivischer Darstellung das Rückschlagventil in einer dritten Einsatzvariante,
• 10 das Rückschlagventil aus 9 in Draufsicht,
• 11 in Längsschnittansicht das Rückschlagventil aus 9 im geschlossenen Zustand,
• 12 die Längsschnittansicht aus 11 bei geöffnetem Ventil,
• 13 in perspektivischer Darstellung das Rückschlagventil in einer vierten Einsatzvariante,
• 14 das Rückschlagventil aus 13 in Draufsicht,
• 15 in Längsschnittansicht das Rückschlagventil aus 13 im geschlossenen Zustand,
• 16 die Längsschnittansicht aus 15 bei geöffnetem Ventil,
• 17 in perspektivischer Darstellung das Rückschlagventil in einer fünften Einsatzvariante,
• 18 das Rückschlagventil aus 17 in Draufsicht,
• 19 in Längsschnittansicht das Rückschlagventil aus 17 im geschlossenen Zustand,
• 20 die Längsschnittansicht aus 19 bei geöffnetem Ventil,
• 21 in perspektivischer Darstellung das Rückschlagventil in einer sechsten Einsatzvariante,
• 22 das Rückschlagventil aus 21 in Draufsicht,
• 23 in Längsschnittansicht das Rückschlagventil aus 21 im geschlossenen Zustand,
• 24 die Längsschnittansicht aus 23 bei geöffneten Ventil,
• 25 in perspektivischer Darstellung das Rückschlagventil in einer siebten Einsatzvariante,
• 26 das Rückschlagventil aus 25 in Draufsicht,
• 27 in Längsschnittansicht das Rückschlagventil aus 25 im geschlossenen Zustand, und
• 28 die Längsschnittansicht aus 27 bei geöffnetem Ventil.

With regard to further advantageous embodiments of the invention, reference is made to the dependent claims and to the following description of an embodiment with reference to the accompanying drawings. In the drawing shows

• 1 a perspective view of a check valve according to the present invention,
• 2 the check valve off 1 in plan view,
• 3 the check valve in the closed state in a longitudinal sectional view,
• 4 the arrangement 3 with open check valve,
• 5 in a perspective view of the check valve in a second insert variant,
• 6 the check valve off 5 in plan view,
• 7 in longitudinal section view of the check valve 5 when closed,
• 8th the longitudinal section view 7 with the valve open,
• 9 in a perspective view of the check valve in a third insert variant,
• 10 the check valve off 9 in plan view,
• 11 in longitudinal section view of the check valve 9 when closed,
• 12 the longitudinal section view 11 with the valve open,
• 13 in a perspective view of the check valve in a fourth insert variant,
• 14 the check valve off 13 in plan view,
• 15 in longitudinal section view of the check valve 13 when closed,
• 16 the longitudinal section view 15 with the valve open,
• 17 in a perspective view of the check valve in a fifth insert variant,
• 18 the check valve off 17 in plan view,
• 19 in longitudinal section view of the check valve 17 when closed,
• 20 the longitudinal section view 19 with the valve open,
• 21 in a perspective view of the check valve in a sixth insert variant,
• 22 the check valve off 21 in plan view,
• 23 in longitudinal section view of the check valve 21 when closed,
• 24 the longitudinal section view 23 with open valve,
• 25 in a perspective view of the check valve in a seventh insert variant,
• 26 the check valve off 25 in plan view,
• 27 in longitudinal section view of the check valve 25 in the closed state, and
• 28 the longitudinal section view 27 with the valve open.

In the drawing is a check valve 1 shown in the present invention, which can be installed vertically in the manner shown in the pipeline, for example, a low-pressure water system and flows through from top to bottom. A reverse installation would also be conceivable. The check valve 1 has a valve body 2 that is essentially from a lower housing part 2a and an upper housing part 2 B is formed. In the valve housing 2 a flow channel 3 is formed, which extends substantially in the vertical direction between an outlet opening 4a . 4b on the lower housing part 2a and an inlet opening 5a . 5b on the upper housing part 2 B extends.

The flow channel 3 comprises one in the lower housing part 2a provided lower vertical channel section 3a , which also has a vertical flow chamber 3b connects, which has a considerably larger diameter than the lower vertical channel section 3a owns and between the housing parts 2a . 2 B is trained. Further, the passageway 3 includes an upper vertical channel portion 3c that is attached to the flow chamber 3b connects at the top. The vertical channel sections 3a . 3c and the flow chamber 3b are arranged concentrically to each other.

In the transition area between the upper vertical channel section 3c and the flow chamber 3b is in the upper housing part 2a a valve seat 6 formed, which is the upper vertical channel section 3a surrounds. In the flow chamber 3b is a valve body 7 in the form of a ball of a buoyant material, for example a plastic provided in the vertical direction between a lower open position and an upper closed position, in which the valve body to the valve seat 6 sealing comes into contact, is movable.

The flow channel 3 of the valve housing 2 defines a vertical longitudinal axis X, with respect to which the two housing parts 2a . 2 B centered to each other. For this purpose is on the lower housing part 2a a waistband 8th and on the upper housing part 2 B a corresponding centering recess 9 provided in the way that the two housing parts 2a . 2 B can be axially plugged together, wherein in the assembled state, the upper housing part 2 B the lower housing part 2a embraces. In the axial overlap area are the two housing parts 2a . 2 B screwed together. These are several connecting screws 10 intended. These pass through through holes, with uniform offset from each other in the upper housing part 2 B are provided and are in corresponding threaded holes in the Zentierbund 8th of the lower housing part 2a screwed. The arrangement is made such that the housing parts 2a . 2 B after loosening the connecting screws 10 and the longitudinal axis X can be rotated against each other and connected together again in the rotated relative position.

The gap between the housing parts 2a . 2 B is there by a sealing ring 11 sealed.

As can be clearly seen in the figures, has the lower housing part 2a a total of two outlet openings 4a . 4b , and in the same way has the upper housing part 2 B a total of two inlet openings 5a . 5b , The arrangement is made such that an outlet opening 4a in the bottom of the lower housing part 2a concentric with the longitudinal or rotational axis X and thus concentric with the lower vertical channel section 3a aligned and with this over a to the longitudinal axis X. concentric outlet channel section 3d connected is. The further outlet opening 4b is in the peripheral wall of the lower housing part 2a provided and with the lower vertical channel section 3a via an outlet channel section 3e connected, which extends transversely to the longitudinal axis X. In the illustrated embodiment, the axis Y of the outlet passage section extends 3e in the radial direction.

In the same way is in the top of the upper housing part 2 B an inlet opening 5a formed concentric with the longitudinal axis X and with this over an concentric with the longitudinal axis X inlet channel section 3f connected. The further inlet opening 5b is in the peripheral wall of the upper housing part 2 B formed and with the upper vertical channel section 3c via an inlet channel section 3g connected, which extends transversely to the longitudinal axis X. Specifically, the axis Y of the inlet passage section runs 3g in the radial direction.

All outlet duct sections 3d . 3e and inlet duct sections 3f . 3g are with an internal thread 11 provided so that in the outlet and inlet duct sections 3d . 3e . 3f . 3g optionally a connection piece 12 or a lid 13 for closing the respective outlet or inlet opening 4a . 4b ; 5a . 5b can be screwed, with a corresponding external thread 14 are provided. The seal between the valve body 2 and the screwed-in components 12 . 13 formed annular gaps via sealing rings 15 on the external thread 14 are deferred.

Due to the fact that the lower housing part 2a and the upper housing part 2 B in each case via a plurality of outlet or inlet openings 4a . 4b ; 5a . 5b and corresponding outlet channel sections 3d . 3e or inlet channel sections 3f . 3g has, and in addition the lower housing part 2a and the upper housing part 2 B relative to each other about the vertical longitudinal axis X are rotatable, there are different use variants, which are shown in the figures.

In the 1 to 4 a first insert variant is shown, in which the bottom-side outlet opening 4a through a lid 13 closed and a connecting piece 12 in the outlet opening 4b the peripheral wall is screwed. In contrast, in the inlet opening 5a at the top of the upper housing part 2 B a connecting piece 12 screwed in and the other side inlet opening 5b through a lid 13 locked.

In the in the 5 to 8th shown second insert variant, the arrangement is taken the other way round. Here is in the bottom outlet port 4a a connecting piece 12 screwed in while the side exhaust port 4b through a lid 13 is closed. In contrast, the inlet opening 5a at the top of the upper housing part 2 B through a lid 13 closed and at the side inlet opening 5b a connecting piece 12 assembled.

In the in the 9 to 12 shown third insert variant are the side outlet opening 4b and the side inlet opening 5b through lid 13 closed and connecting pieces at the other outlet and inlet openings 4a . 5a appropriate.

In contrast to that in the in the 13 to 16 illustrated fourth insert variant connecting piece 12 at the side outlet and inlet openings 4b . 5b attached while the outlet and inlet openings 4a . 5a are closed at the top of the housing and the bottom of the housing by the lid. The lower housing part 2a and the upper housing part 2 B are aligned with each other in such a way that the connecting pieces 12 are rotated by 90 ° to each other.

In the 17 to 20 the same arrangement is shown, except that in this fifth use variant, the housing parts 2a . 2 B aligned with each other in such a way that the connecting pieces 12 are rotated by 180 ° from each other, so pointing away from each other.

The in the 21 to 24 illustrated sixth insert variant corresponds to the fourth insert variant with the proviso that the connecting piece 12 are rotated in the opposite direction by 90 °.

In the in the 25 to 28 eighth use variant shown are the housing parts 2a . 2 B finally aligned in such a way that the at the lateral outlet and inlet openings 4b . 5b provided connecting piece 12 pointing in the same direction.

As can be seen in the drawing, measures are taken to prevent twisting of the connecting piece 12 to prevent its axis Y. For this purpose are securing plates 16 provided on the valve body 2 are bolted and with a flattening on a radial collar 12a of the connecting piece 12 with which the connecting pieces 12 on the outside of the valve housing 2 come into contact, cooperate form-fitting, to twist the connecting piece 12 to prevent. Finally, the inlet and outlet openings 5b . 4b in the peripheral wall of the valve housing 2 flats 17 assigned to which the radial collar 12a of the connecting piece 12 or the lid 13 come into contact area.

LIST OF REFERENCE NUMBERS

1

check valve

2

valve housing

2a

lower housing part

2 B

Upper housing part

3a

lower vertical channel section

3b

Flow channel

3c

upper vertical channel section

3d

outlet channel

3e

outlet channel

3f

Inlet channel section

3g

Inlet channel section

4a, 4b

outlet

5a, 5b

inlet port

6

valve seat

7

valve body

8th

spigot

9

centering

10

connecting bolts

11

connecting means

12

spigot

13

cover

14

connecting means

15

seals

16

securing means

17

flattening

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

• EP 1319878 B1 [0002]

Claims (11)

A check valve comprising a valve housing (2) in which is formed a flow passage (3) having a vertical passage portion (3a) and extending between an outlet port (4a, 4b) and an inlet port (5a, 5b) of the valve body (2) , and having a vertical channel section (3a) associated with the locking means for closing the vertical channel portion (3a) having a vertical channel portion (3a) surrounding the valve seat (6) and a valve body (7) in the valve housing (2) between a Opening position and a closed position in which the valve body (7) with the valve seat (6) sealingly comes into abutment to close the vertical channel portion (3a), is movable, characterized in that at least one outlet channel and / or an inlet channel Associated with connecting means (11), via which a the connecting piece (12) assigned to the respective channel section and inserted into the latter ösbar with the valve housing (2) is connectable. Check valve after Claim 1 , characterized in that at least one outlet channel section and / or inlet channel section is provided with an internal thread (11) as a connecting means, in which a connecting piece (12) is screwed or screwed. Check valve after Claim 1 or 2 , characterized in that the valve housing (2) has a lower housing part (2a) and an upper housing part (2b) and wherein the lower housing part (2a) and the upper housing part (2b) about a common vertical axis of rotation (X) rotatable relative to each other and are detachably connected to one another in defined relative positions, and in a housing part (2a) at least one outlet channel section (3a) is formed which extends transversely to the axis of rotation (X) between an outlet opening (4b) provided in the circumferential wall of the housing part (2a). and the vertical channel section (3a), and / or that an inlet channel section (3g) is formed in a housing section (2b) extending transversely to the axis of rotation (X) between an inlet opening (12) provided in the peripheral wall of the upper housing section (2b). 5b) and the vertical channel section (3a). Check valve after Claim 3 characterized in that formed in the lower housing part (2a) is at least one outlet channel section (3d) extending in the direction of the rotation axis (X) between an outlet opening (4a) provided in the bottom wall of the lower housing part (2a) and the vertical one Channel portion (3a) extends or forms an end portion thereof, and / or that in the upper housing part (2b) an inlet channel portion (5a) is formed, which in the direction of the axis of rotation (X) between one in the upper side of the upper housing part ( 2b) and the vertical channel section (3b) or forms an end section thereof. Check valve after Claim 3 or 4 , characterized in that an outlet channel section and an inlet channel section are provided with a connecting piece (12) and each further inlet opening and / or outlet opening is sealingly closed by a cover (13) which is inserted into the respective inlet opening or outlet opening and detachable via the connecting means connected to the valve housing (2), in particular screwed into the respective outlet channel section / inlet channel section. Check valve after Claim 5 , characterized in that in the inlet and outlet openings inserted connecting piece and / or cover are secured against rotation about an axis of the inlet or outlet channel portion, to which they are respectively assigned. Check valve after Claim 6 , characterized in that the connecting pieces and / or the cover via securing means (16), which on the valve housing (2) releasably secured, in particular can be screwed, secured, wherein the securing means (16) on the one hand and the connecting pieces (12) and On the other hand, the lids (13) are designed in such a way that they engage positively and / or positively in order to prevent twisting. Check valve according to one of the preceding claims, characterized in that each of the provided in the peripheral wall of the valve housing inlet and outlet openings in each case a flattening (17) is associated in the peripheral wall, at which a radial projection or collar of the respective inlet or outlet opening inserted connecting piece / lid (12, 13) comes into surface area. Check valve according to one of the preceding claims, characterized in that the upper housing part (2b) and the lower housing part (2a) are centered to one another. Check valve according to one of the preceding claims, characterized in that the valve seat (6) on the upper housing part (2a) is formed. Check valve according to one of the preceding claims, characterized in that the valve body (7) is designed as a ball.

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