Frost-protected external wall diverter valve with system separator

Abstract

The invention relates to an outer wall diverter valve (2), comprising a pipeline section (6) extending by several centimeters, a rotary handle (8), and a system separator (18) arranged in the end of the valve body (4) on the discharge side. The rotary handle is connected to an operating rod (10) rotatably supported in the valve body (4), and the operating rod opens and closes a pipeline closure (16) at its end facing away from the rotary handle (8). The system separator comprises a flow valve (32) which allows liquid to be discharged from the valve body (4) and prevents liquid from entering the valve body (4) from an interface (20). In order to drain the outer wall diverter valve (2), a stop valve that can be adjusted between a closed position and an open position is installed on the valve body (4). The stop valve is formed by a combination of a threaded sleeve (9), a valve pin (11) provided with a sliding ring seal (21), an operating rod (10) used as a stop, and a spring (19). The stop valve can be easily opened and closed by means of a rotating handle (8), thereby draining the internal space of the valve body (4).

Description

Technical Field

[0001] When the valve body is in the closed position, the cam is in the closed position, and the cam is in the closed position, so that the cam can be opened and closed by the cam. Background Art

[0002] Document DE 34 02 484 A1 discloses an external wall diverter valve having a valve body that extends into the external wall of a building, or even through the external wall into the building interior, in order to extend the valve seat of the diverter valve into the area of the external wall beyond the freezing point. In this document, a similarly extended operating lever, designed as a rotation axis, extends from a turning handle to the valve seat and, depending on the direction of rotation of the turning handle, moves toward or away from the valve seat to drain water or close the valve.

[0003] A similar version of an outer wall diverter valve with a valve seat located within the outer wall is known from DE 101 10 585 C1. This version is used on the outlet pipe of a connection piece. A valve spring and a closing element are incorporated into the connection piece as a flow valve, which acts as a backflow prevention device. The backflow prevention device is arranged upstream of the outlet connection and has a flow valve that allows liquid to drain from the valve body and prevents liquid from entering the valve body from the connection. The backflow prevention device acts as a system separator.

[0004] Combining an external wall diverter valve with a valve body and system separator built into the external wall presents the following problem: while the area of the valve seat can remain freeze-free, additional measures are still required to drain the valve body. In particular, when combining an internal valve seat with a system separator installed downstream, water between the valve seat and the system separator in the valve body remains in the pipeline because it cannot flow away. This can cause freeze damage to the valve body, water pipeline, and / or system separator when the ambient air temperature drops below zero degrees Celsius. Summary of the Invention

[0005] It is an object of the present invention to provide an outer wall diverter valve in combination with a system separator, which outer wall diverter valve provides a simple solution for draining the water line between the valve body and valve seat and the system separator.

[0006] For this type of external wall flow diverter valve, this object is achieved in the following manner, that is, the turning handle and the threaded sleeve are non-rotatably connected to each other, the threaded sleeve is retained in the internal thread on the valve body side by its external thread in the axial direction, and the threaded sleeve has a receiving space, in which a valve pin that can move in the axial direction is arranged, and in a first position relative to the threaded sleeve, the valve pin is squeezed and retained on the valve seat formed in the receiving space by a spring that is located in the receiving space and is compressible in the axial direction. In the receiving space, an annular inner diameter narrowing portion is formed relative to the adjacent inner surface of the receiving space, and the valve pin in its first position is tightly in contact with the surface of the narrowing portion with a sliding seal arranged on the valve pin. In the first screwing movement of the threaded sleeve into the valve body, the valve pin in the threaded sleeve causes the operating rod to move from the open position to the closed position. The cam is engaged with the valve stem and the cam is engaged with the valve member and the cam is engaged with the valve stem, and the cam is engaged with the valve member and the cam, and the cam is engaged with the valve stem and the cam, and the cam is engaged with the valve member and the cam, and the cam is engaged with the valve stem and the cam, and the cam is engaged with the valve member and the cam, and the cam is engaged with the valve stem and the cam, and the cam is engaged with the valve member and the cam,

[0007] If both the flow valve and the line closure in the system separator are closed, no more liquid will flow through the outer wall diverter valve. In this case, only the remaining liquid is in the internal space of the valve body, but this remaining liquid will not flow out from here when the flow valve in the system separator is closed. The flow valve builds up a certain overpressure in the internal space of the valve body, and the flow valve is only opened regularly when the flow valve in the system separator can be opened by this overpressure. If the line closure is closed, no more liquid will flow into the valve body from the inlet side, and the liquid will also be retained in the valve body by the system separator. If the liquid is cooled here to a temperature at which it enters a phase change, the valve body will be damaged by the change in volume of the liquid caused by the phase change. If the liquid is water, for example, when a temperature below 0°C is reached, the physical state of the water changes from liquid to solid and its volume expands at the same time. The valve body will crack.

[0008] In the proposed implementation, the handle is also rotated in the screw-on direction, as in other water pipe fittings, so that the desired amount of water can be withdrawn. Here, the threaded sleeve and the valve pin located therein are unscrewed axially from the valve body. The water pressure in the water line on the inlet side presses the closing element connected to the operating lever out of the valve seat, because the operating lever is no longer held in its closed position by the valve pin. The water then enters the valve body and flows out of the outer wall diverter valve through the flow valve of the system separator. In order to subsequently reduce or stop the outflow of water from the outer wall diverter valve again, the handle is used within the scope of the first screw-in movement to throttle the water inflow or completely close the outer wall diverter valve by moving the operating lever again in the direction of the closed position via the threaded sleeve and the valve pin. Here, the operation of the handle corresponds completely to the common use of a conventional faucet.

[0009] However, the present invention proposes supplementing the handle with a drainage feature for the valve body, integrating this drainage feature into its function. The combination of a threaded sleeve, a valve pin equipped with a slide ring seal, an operating lever serving as a stop, and a spring forms a shutoff valve that can be easily opened to drain the interior of the valve body. It should be noted that a skilled artisan would naturally consider an equivalent variation if the slide ring seal were not arranged on the valve pin but instead in the narrow area.

[0010] The drain function is achieved by a spring-assisted valve pin integrated into the outer wall diverter valve. When the handle is normally screwed in and out, the valve pin remains in its first position within the threaded sleeve, where it is held in place by the spring tension of a compressible spring. The spring tension of the compressible spring is so high that it presses the operating rod against the valve seat in its closed position to such an extent that the outer wall diverter valve is tightly closed in this position. However, if the handle is screwed in again against the force of the compressible spring, the valve pin is pressed deeper and deeper into the receiving space in the threaded sleeve, as the operating rod acts as a stop to prevent further synchronous movement of the valve pin and the threaded sleeve. As the valve pin moves into the receiving space, the sliding ring seal disposed on the valve pin moves out of the annular constriction of the inner diameter of the receiving space, so that the valve pin no longer rests tightly against the constriction. When the valve pin is in this second position, liquid within the valve body can flow outward through the receiving space in the threaded sleeve past the valve pin, thereby draining the valve body. During the second screwing movement, the valve body can substantially or completely drain the liquid from its interior. If the threaded sleeve is now rotated again via the turning handle to the position where the valve pin is in its first position, the outer wall diverter valve can be used normally again. Furthermore, the outer wall diverter valve can only be used for opening / closing when the drainage function must be closed by the valve pin, and the drainage function is only active when the line closure is closed. This prevents unnecessary water loss.

[0011] The threaded sleeve and the valve pin integrated therein allow the liquid in the valve body to at least partially drain away, resulting in air bubbles within the valve body that can at least partially compensate for changes in the volume of the liquid in the valve body. With a suitable arrangement of the valve body, the valve body can even be largely or completely emptied when the operator moves the valve pin into the second position. Thus, although the system separator prevents residual liquid in the valve body from draining out of the outer wall diverter valve, damage to the outer wall diverter valve caused by freezing can be easily prevented.

[0012] What's particularly user-friendly here is that the operation of the external diverter valve remains unchanged during normal use of the open / close function. The handle simply needs to be turned further in to drain the water, but this is also easily accomplished. The fitting is clearly very attractive overall, as the technical special features do not increase the visible functional range, and the fitting retains its simple, basic shape.

[0013] The closing element of the line closure can be a valve cone, a sealing disk or a similar sealing element which can have a lining made of a flexible material, such as rubber, in the region of the sealing surface in order to improve the sealing effect.

[0014] According to the design of the present invention, the valve body comprises a tubular line section, a line shutoff formed at the inlet-side end of the line section, and a handle mounted at the opposite end of the line section. The operating lever is designed as a rod that extends through the interior of the line section. The system separator is arranged in a tubular connector mounted laterally to the tubular line section, with a connection at its outlet-side end. Drainage of the valve body is achieved via the area of the handle. In this design, the outer wall diverter valve protrudes only slightly beyond the outer wall after installation. The line section must protrude outward from the outer wall surface only to the extent that the tubular connector can be secured thereto and radially extended therefrom. The minimal possible excess of the valve body beyond the outer wall means minimal heat loss through the outer wall diverter valve in buildings with thermal bridge types. The handle is mounted directly on the end face of the line section, along with the valve body and the threaded sleeve screwed into it. In this position, the handle can be easily operated. When the outer wall diverter valve is installed in the outer wall so that the water in the valve body can be easily discharged outwards through the threaded sleeve, the liquid in the pipeline section can easily flow away.

[0015] According to one embodiment of the present invention, a valve housing manufactured from a casting is attached at its end to the outward-facing end of the pipeline section. The handle-side end of the operating lever leads into the valve housing. The valve housing has a connecting nipple into which a threaded sleeve is screwed. The handle is fixedly attached to the threaded sleeve and, with its lateral stop, at least partially engages the threaded sleeve and the connecting nipple. The handle encloses a flow channel for water flowing out of the threaded sleeve in the gap between the stop and the circumference of the threaded sleeve and the connecting nipple. The casting has an attachment connection via which the casting is connected to the system separator. The casting can be manufactured cost-effectively and is highly reliable and leak-free. The interior space can be designed to be flow-friendly, thereby keeping the pressure losses that occur despite changes in the direction of the flowing liquid low.

[0016] According to one embodiment of the present invention, the system separator is arranged in a housing designed as a cast part. The cast part can be manufactured cost-effectively, is leak-proof, and, after suitable turning and / or milling, expands the required installation and fastening options. The cast part has an at least approximately cylindrical basic shape with openings on the inlet and outlet sides. According to one embodiment of the present invention, the cast part also integrally forms an interface to which a drainage system for discharging liquids can be connected, for example, a crown-shaped flange with an internal thread into which a connecting piece can be screwed.

[0017] According to a design of the present invention, the receiving cap configured as a casting and the valve housing manufactured as a casting are connected to each other via a tubular line section. The corresponding pipe section can be assembled simply and reliably, thereby making the manufacture of the outer wall diverter valve generally advantageous.

[0018] According to one embodiment of the invention, the valve housing and the receiving cap are formed in a common, one-piece cast housing for accommodating the system separator. The one-piece cast housing allows all water drainage functions of the outer wall flow divider and the system separator to be integrated into a single component, which is designed to be correspondingly stable and operationally reliable.

[0019] Further features of the invention are apparent from the claims, the drawings, and the description of the subject matter. The features and feature combinations described above in the specification and the features and feature combinations described below in the description of the drawings and / or shown in the drawings can be used not only in the combination indicated in each case but also in different combinations or individually. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will now be described in detail based on preferred embodiments and with reference to the accompanying drawings.

[0021] It shows:

[0022] Figure 1 Shows an overall view of the outer wall diverter valve from an oblique top view,

[0023] Figure 2 A cross-sectional view showing the valve housing assembled with the threaded sleeve and valve pin, with the shut-off valve open.

[0024] Figure 3 shows an enlarged view of the shut-off valve, and

[0025] Figure 4 A cross-sectional view shows the valve housing assembled with the closed shut-off valve. DETAILED DESCRIPTION

[0026] exist Figure 1 2 shows a view of an outer wall diverter valve 2. The valve body 4 of the outer wall diverter valve 2 has a pipeline section 6, the pipeline rod on the inlet side of the pipeline section is significantly extended compared to conventional diverter valves. A turning handle 8 is arranged on the outward-facing side of the outer wall diverter valve 2, by means of which the outer wall diverter valve 2 can be rotated open and closed. For this purpose, the turning handle 8 is connected to a threaded sleeve 9 in a non-rotatable manner. The threaded sleeve is connected to the outer wall diverter valve 2 in a non-rotatable manner. Figure 1 Not shown in FIG. A valve pin 11 is arranged in the threaded sleeve 9, which moves the actuating rod 10 in the valve body 4 during a corresponding screwing movement. Figure 1 The operating rod 10 is shown in dashed lines. A closing element 12 is arranged on the end of the operating rod 10 on the entry side, which can move in the axial direction during the rotation of the operating rod 10. Figure 1 The closing element 12, which is only schematically shown, is placed on a valve seat 14, which is also only schematically shown in dots, to tightly close the outer wall diverter valve 2. If water is to flow through the outer wall diverter valve 2 from the inlet side, the pressing force exerted by the threaded sleeve 9 on the operating rod 10 is reduced by unscrewing the threaded sleeve 9 from the valve body 4 using the turning handle 8. The water pressure of the water entering the pipeline then lifts the closing element 12 from the valve seat 14, thereby opening the outer wall diverter valve 2. The closing element 12 and the valve seat 14 together form a pipeline closure 16.

[0027] By extending the line section 6, the line closure 16 is moved inward into the outer wall of the building, moving it away from the freezing point and preventing it from freezing. This makes the line closure 16 of the outer wall diverter valve 2 more frost-resistant. To ensure that the line closure 16 extends sufficiently into the building's interior, it is advantageous to arrange it as close as possible to the inlet-side end of the line section 6. Technicians select the length of the line section 6 to achieve sufficient frost resistance for the outer wall diverter valve 2.

[0028] The valve body 4 of the outer wall diverter valve 2 also includes a pipeline section in which a system separator 18 is arranged. The system separator 18 is used to prevent liquid from flowing back from the pipeline connected to the interface 20 into the valve body 4 and the pipeline network on the inlet side. The system separator 18 is located in a tubular connector 24.

[0029] The valve body of the outer wall diverter valve 2 also includes a valve housing 28, to which the threaded sleeve 9 and the rotating handle 8 mounted thereon are fixed. In this embodiment, the liquid flowing in from the pipeline section 6 flows in an arc toward the tubular connection 24. The valve body 28 and the tubular connection 24 are connected to each other via a tubular pipeline section 30.

[0030] exist Figure 2 3 shows a cross-sectional view of the valve housing 28 and the system separator 18 assembled together. The system separator 18 is arranged in the housing 34. The core component of the system separator 18 is the flow valve 32, which allows the liquid to flow from the inlet side but prevents the liquid from flowing back into the valve body 4. Figure 2 In the closed position of the flow valve 32 shown, the flow valve also prevents the liquid in the valve body 4 from flowing away.

[0031] exist Figure 2 The end of the operating rod 10 on the turning handle side can be clearly seen in the sectional view. The end side of the operating rod 10 is engaged with the valve pin 11, which is held in the threaded sleeve 9. The threaded sleeve 9 is screwed into the valve body 4 with its external thread supported on the internal thread 15 on the valve body side toward the operating rod 10 by means of the turning handle 8, so that the valve pin 11 is pressed into the receiving space 17 against the force of the compressible spring 19. Figure 2 The valve pin 11 is in the second position, in which the sliding seal 21 of the valve pin arranged on the valve pin 11 no longer rests tightly on the annular narrowing 22 of the adjacent inner surface of the receiving space 17, whose inner diameter is relative to the inner surface of the receiving space 17. As a result, water in the interior of the valve body 4 can reach the drain 26 through the flow channel 23 extending along the valve pin 11 and extending between the valve pin 11 and the annular narrowing 22 through the receiving space 17, and the water can flow out freely from the threaded sleeve 9 at the drain. The path of the water flowing out of the valve body 4 is through Figure 2 The curved arrow in FIG.

[0032] Figure 3 An enlarged view of the stop valve area is shown, wherein the valve pin 11 is as shown in FIG. Figure 2 4 is shown in the second position, which enables the interior of the valve body 4 to be drained.

[0033] exist Figure 2In the illustrated embodiment, the tubular connection 24, in which the system separator 18 is located, is designed as a receiving cap 34, which can be manufactured as a cast part, for example. In this embodiment, the valve housing 28 is also manufactured as a cast part. The valve housing contains an actuating lever 10, which is connected via a threaded sleeve 9 to the valve pin 11 held therein and the handle 8 mounted thereon. The valve housing 28 has an attachment connection 40, which is connected via the attachment connection to the receiving cap 32 and the system separator 18 located therein. In this embodiment, the receiving cap 34 and the valve housing 28 are connected to each other via a tubular line section 30.

[0034] Figure 4 The only difference from variant 2 is that the shutoff valve is shown in its closed position, in which the valve pin 11 is in its first position and is held against the valve seat 14 by its front support element 25, compressed by the spring 19. The slide ring seal 21 rests tightly against the surface of the constriction 22, preventing the liquid in the valve body 4 from flowing through the flow channel 23 into the drain opening 26. The valve pin 11 is removed from the operating lever 10 by screwing the threaded sleeve 9, allowing the operating lever to move freely in the axial direction A. It should be noted that the valve pin 11 does not necessarily need to be removed from the operating lever 10. The operating lever 10 can also open the line closure 16 while it is still in contact with the valve pin 11, but water has already flowed through the open line closure 16 into the interior of the valve body 4. If the interior of the valve body is subjected to an increased internal pressure due to the inflowing water when the line closure 16 is opened, the increased internal pressure from the interior of the valve body 4 presses against the flow valve 32, so that the liquid in the valve body 4 now flows through the system separator 18, as shown in FIG. Figure 4 As shown by the arrows shown in .

[0035] The present invention is not limited to the above embodiments, and it is not difficult for professionals to modify these embodiments in a suitable manner to match specific application situations.

[0036] Reference Signs List

[0037] 2 External wall diverter valve

[0038] 4 Valve body

[0039] 6 Pipeline sections

[0040] 8. Turning handle

[0041] 9 Threaded sleeve

[0042] 10 operating levers

[0043] 11 Valve pin

[0044] 12 Closing elements

[0045] 13 external thread

[0046] 14 valve seat

[0047] 15 internal thread

[0048] 16 Pipeline locking unit

[0049] 17 Accommodation Space

[0050] 18 system separator

[0051] 19 spring

[0052] 20 interfaces

[0053] 21 Slide ring seal

[0054] 22 narrowing part

[0055] 23 circulation through

[0056] 24 tubular joints

[0057] 25 support elements

[0058] 26 Drainage outlet

[0059] 28 valve housing

[0060] 30 tubular pipeline sections

[0061] 32 flow valve

[0062] 34 Container cover

[0063] 40 accessory connector

Claims

1. An outer wall diverter valve (2), comprising: A valve body, a turning handle (8) arranged on the side of the outer wall diverter valve (2) pointing outward in the installed state, a valve seat (14) and a system separator (18) arranged in the outlet-side end of the valve body (4) upstream of the outlet-side connection (20), in, The pipeline rod on the inlet side of the valve body has a pipeline section (6) that is extended by several centimeters. The pipeline section forms a pipeline section that reaches the building wall in the installed state. The turning handle (8) is connected to the threaded sleeve (9) supported in the valve body (4) in a non-rotatable manner. The threaded sleeve acts on the movable operating rod (10) and the closing element (12) connected thereto at its end facing away from the turning handle (8). The valve seat is arranged in the half of the pipeline rod in the valve body (4) facing away from the turning handle (8). The closing element (12) that moves with the operating rod (10) and is in the closed position cooperates with the valve seat (14) to form a pipeline closure (16). The interface has a flow A valve (32) is provided, wherein the flow valve allows liquid to flow away from the valve body (4) and prevents liquid from entering the valve body (4) from the interface (20), and is characterized in that the threaded sleeve is held in the internal thread (15) on the valve body side by its external thread (13) in a rotationally movable manner in the axial direction (A), the threaded sleeve (9) has a receiving space (17), a valve pin (11) movable in the axial direction (A) is arranged in the receiving space, and the valve pin is squeezed and held on the valve seat formed in the receiving space (17) by a spring (19) located in the receiving space (17) and compressible in the axial direction (A) in a first position relative to the threaded sleeve (9). (17), an annular inner diameter narrowing portion (22) is formed relative to the adjacent inner surface of the accommodating space (17), and the valve pin (11) in its first position is tightly abutted against the surface of the inner diameter narrowing portion (22) with a sliding seal (21) arranged on the valve pin (11). During the first screwing movement of the threaded sleeve (9) into the valve body (4), the valve pin (11) in the threaded sleeve (9) causes the operating rod (10) to move from the open position to the closed position, in which the pipeline closure portion (16) is closed. In the closed position of the operating rod (10), the operating rod forms a stop for the valve pin (11), and the stop prevents the valve pin (11) from moving in the axial direction (A). The threaded sleeve (9) moves forward, and after a second screwing-in movement forward after the first screwing-in movement, the threaded sleeve (9) moves against the spring force of the compressible spring (19) and the valve pin (11) is pressed deeper into the accommodating space (17), wherein the valve pin (11) is in a second position relative to the threaded sleeve (9), in which the sliding seal (21) moves out of the annular inner diameter narrowing portion (22) and releases a flow channel (23) between the valve pin (11) and the annular inner diameter narrowing portion (22), and the threaded sleeve (9) has a drain opening (26) for draining the accommodating space (17) in its section facing away from the annular inner diameter narrowing portion (22) in the direction of the turning handle (8),A flow channel (23) is formed between the valve pin (11) and the inner surface of the receiving space (17) of the threaded sleeve (9), and the flow channel connects the interior space of the valve body (4) with the drain opening (26) in the second position of the valve pin (11).

2. The outer wall diverter valve (2) according to claim 1, characterized in that: The valve body (4) has a tubular line section (6), the line closure (16) is formed at the inlet-side end of the line section and a handle (8) is arranged at the opposite end of the line section, the operating lever (10) is designed as a rod that passes through the interior of the line section (6), the system separator (18) is arranged in a tubular connector (24) arranged laterally on the tubular line section (6), a connection (20) is provided on the connector at its outlet-side end, and the valve body (4) is drained via the region of the handle (8).

3. The outer wall diverter valve (2) according to claim 1 or 2, characterized in that: A valve housing (28) made of a casting is mounted on the end side on the outward-facing end of the pipeline section (6), the handle-side end of the operating lever (10) leads into the valve housing, the valve housing (28) has a connecting joint, the threaded sleeve (9) is screwed into the connecting joint, the handle (8) is mounted on the threaded sleeve (9) in a rotationally fixed manner and at least partially engages the threaded sleeve (9) and the connecting joint with its lateral stop, the handle (8) surrounds a flow channel (23) for water flowing out of the threaded sleeve (9) in the gap between the stop and the circumference of the threaded sleeve (9) and the connecting joint, and the casting has an attachment joint (40) via which the casting is connected to the system separator (18).

4. The outer wall diverter valve (2) according to claim 3, characterized in that: The system separator (18) is arranged in a receiving cap (34) designed as a cast part.

5. The outer wall diverter valve (2) according to claim 4, characterized in that: The receiving bell (34) designed as a cast part and the valve housing (28) produced as a cast part are connected to one another via a tubular line section (30).

6. The outer wall diverter valve (2) according to claim 3, characterized in that: The valve housing (28) and the receiving cap (34) are formed in a common one-piece cast housing for receiving the system separator (18).

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