EP0128917A1

EP0128917A1 - Pipe separator with protection against impurities

Info

Publication number: EP0128917A1
Application number: EP84900051A
Authority: EP
Inventors: Hans Arens; Hans Kern; Richard Haslberger
Original assignee: Gruenbeck Wasseraufbereitung GmbH
Current assignee: Gruenbeck Wasseraufbereitung GmbH
Priority date: 1982-12-21
Filing date: 1983-12-15
Publication date: 1984-12-27
Also published as: CH664202A5; IT1170033B; IT8324300A0; US4624279A; DE3247320C2; DE3247320A1; WO1984002547A1

Abstract

Séparateur de tuyau (1) doté d'un boîtier (2) avec une entrée (5), une sortie (6) et une chambre de séparation (14) combinable avec un écoulement (9). Entre l'entrée (5) et la sortie (6) est prévu un élément d'arrêt (10) qui, dans une première position, relie l'entrée (5) à la sortie (6) et qui, dans une seconde position, sépare l'entrée (5) de la sortie (6) et relie la sortie (6) à la chambre de séparation (14). Afin d'empêcher que des impuretés pénètrent dans la chambre de séparation (14) et ainsi dans un système de canalisation qui peut être relié avec l'entrée (5) et la sortie (6), la chambre de séparation (14) est rendue étanche aux impuretés. Un filtre (24) est de préférence prévu entre la chambre de séparation (14) et l'écoulement (9).Pipe separator (1) provided with a housing (2) with an inlet (5), an outlet (6) and a separation chamber (14) which can be combined with a drain (9). Between the inlet (5) and the outlet (6) is provided a stop element (10) which, in a first position, connects the inlet (5) to the outlet (6) and which, in a second position , separates the inlet (5) from the outlet (6) and connects the outlet (6) to the separation chamber (14). In order to prevent impurities from entering the separation chamber (14) and thus into a piping system which can be connected with the inlet (5) and the outlet (6), the separation chamber (14) is made impermeable. A filter (24) is preferably provided between the separation chamber (14) and the flow (9).

Description

Pipe separator with protection against contamination

The invention relates to a pipe separator according to the preamble of claim 1.

Such a pipe separator is known for example from DE-AS 27 59 174. In this known pipe separator, if the separating element moves from the first position into the second position, then the separating space enclosed by the housing and the separating element is connected to a drain through which liquid can drain into a drain or the like. In this position of the separating element, the separating space is connected directly to the environment via the drain, so that impurities and / or bacteria can get into the separating space. This danger is all the greater since when the separating element is moved into the second position, the volume of the separating space is increased and air is sucked in from the surroundings. These contaminants and germs reach a subsequent movement of the separating element into the first flow position in the pipe network in which the pipe separator is installed.

The object of the invention is to provide an improved pipe separator. In particular, the penetration of impurities into the pipe separator should be avoided. In addition, the construction of the pipe separator should be simple and space-saving.

This object is achieved by a pipe separator of the type described at the outset, which is characterized according to the invention by the characterizing part of claim 1.

Further advantages of the invention are presented in the subclaims. Further features and advantages of the invention result from the description of exemplary embodiments in connection with the figures. The figures show:

1 shows a section through a first embodiment of the pipe separator according to the invention with the locking element in the first position. and

2 shows a section through a second embodiment of the pipe separator according to the invention with the blocking element in the second position.

The pipe separator 1 has a housing 2 with a first cylindrical area 3 and a second cylindrical area 4. Provided between the first cylindrical region 3 and the second cylindrical region 4 is an inlet 5 that can be connected to a tube on one side of the housing 2 and an outlet 6 that can be connected to a tube on the opposite side of the housing 2. On the front side opposite the inlet 5 and the outlet 6, the first cylindrical region 3 is closed with a cover 7 and the second cylindrical region 4 is closed by a plate 8 which has a drain opening 9.

A blocking element in the form of a slide 10 is provided between the inlet 5 and the outlet 6 and has a piston surface 12 at its upper end 11 which projects into the first cylindrical region 3. The piston surface 12 separates the space enclosed by the housing 2, cover 7 and plate 8 into a cylinder space 13 and a separation space 14. Depending on the pressure in the cylinder space 13, the slide 10 is in a direction transverse to the connecting line between the inlet

5 and output 6 between a first position and a second position.

The slide 10 has a in the first position of the slide shown in Figure 1 with the input 5 and output

6 connectable connecting channel 15 and an opening 17 connected to the separating space 14 via a bore 16 in the slide 10. The connection channel 15 and the opening 17th are designed so that in this first position the input 5 and the output 6 are connected to one another via the connecting channel 15 and in the second end position of the slide 10 the input 5 is separated by the slide 10 and the output 6 via the opening 17 and the channel 16 is connected to the separating space 14. Suitable seals in the form of interacting flat slide seals 18, 19 with corresponding sealing rings are provided for sealing between the inlet 5 and slide 10 or slide 10 and outlet 6. The channel 16 is connected to the Zylin derraum 13 via a valve 20. The slide 10 has on its lower end facing away from the piston 12 a formed as a spring plate abutment plate 21 on which a pressure spring 22 engages the plate 8 and the slide 10 in a direction opposite to the effect of the pressure in

Prestresses cylinder chamber 13. The abutment plate 21 is guided laterally in the second cylindrical region 4 and has holes 23 via which the separating space is connected on both sides of the abutment plate 21.

Between the separation space 14 and the drain opening 19 is a

Filter 24 in the form of a siphon 25, which is arranged in the area of the separating space 14 enclosed by the compression spring 22, is provided for cleaning the air entering the separating space 14. For this purpose, a drain pipe 26 enclosing the drain opening 9 'has a through the plate

8 extending into the separation space 14 and open to the separation space 14 nee tubular extension 27. The extension 27 is surrounded by a cap-shaped cover 28 arranged concentrically to the latter, the cylindrical side wall 29 of which is connected to the plate 8 in the region between the drain pipe 26 and the spring 22. The side wall 29 has lateral bores 30, the distance from the plate 8 of which is smaller than the height of the extension 27 above the plate 8. The inside diameter of the side wall 29 is somewhat larger than the outside diameter of the extension 27 and the height of the cover 28 is slightly larger than the OM? I Height of the extension 27 chosen so that between cover

28 and extension 27, a channel 31 is formed with a first region 32 extending in the vertical direction and a second region 33 extending in the horizontal direction. The channel 31 forms a connection between the separation space 14 and the drain opening 9.

On the top of the cover 28, a UV lamp 34 is provided in the space 14 below the abutment plate 21, the electrical connection 35 of which is guided to the outside through the drain opening 9. The outer surface 36 of the extension 27 and / or the inner surface 37 and / or outer surface 38 of the side wall

29 is electrolytically silver-plated.

The valve 20 is designed such that it either forms a connection between the cylinder space 13 and the separation space 14 via the channel 16 or seals the separation space 14 from the cylinder space 13. Since the cylinder space 13 can in turn only be connected to the inlet 5 via a line 39, the separation space 14 is sealed off on all sides from the environment. The only connection to the outside is via siphon 25.

In operation, the pipe separator 1 is inserted into a liquid line, so that the inlet 5 is acted upon by a liquid medium. If the pressure of this medium is above a set safety pressure value, the valve 20 connects the inlet 5 to the cylinder chamber 13 and the slide

10 is in the first position shown in the figure, in which input 5 and output 6 are connected via the connecting channel 15. The cylinder chamber 13 is acted upon by the pressure on the inlet side and the valve 20 seals the cylinder chamber 13 with respect to the channel 16 and the separating chamber 14. The pressure on the inlet side drops below a set one - S -

Pressure value, then the valve 20 switches over and connects the cylinder space 13 via the channel 16 to the separation space 14. Because a lower pressure prevails in the separation space 14, namely the ambient pressure, the pressure in the cylinder space 13 and the compression spring 22 moves the slide 10 upwards into the second end position, in which the opening 17 is aligned with the entrance to the exit 6. The liquid volume in the cylinder space 13 is pushed out via the channel 16 into the separation space and flows gfs. together with liquid coming through the opening 17 from the outlet 6 into the annular space between the inner wall of the second cylindrical region 4 and the side wall 29. A corresponding amount of the liquid already there and in the channel 31 leaves the liquid Siphon 25 via the drain opening 9. The stroke volume of the piston 12 is preferably chosen so large that the entire amount of liquid in the siphon 25 is renewed in such a switching operation of the slide 10.

When the slide 10 moves into the second position, the connecting duct 15 comes into connection with the separating space 14. At the same time, air is sucked in through the drain opening 9 due to the increasing volume of the separating space 14. Since the separation space 14 is only connected to the environment via the siphon 25, this air can only enter the separation space 14 via the channel 31. In this case, any impurities in the air are filtered or absorbed by the liquid through the liquid located in the channel 31 and in the annular space between the cylindrical region 4 and the side wall 29. Any germs passing through the filter 24 are killed by the electrolytic silvering of the siphon surfaces and / or by the radiation from the UV lamp 34. As a result, the air in the separation space 14 is cleaned and contamination of the channel 15 in the separation position

OM the slider 10 is prevented.

The fact that the filter 24 or the siphon 25 is arranged according to the invention within the space enclosed by the compression spring 22 in the housing 2, results in a space-saving design without enlarging the pipe separator. However, it is of course also possible to provide the filter 24 separately to the drain pipe 26 outside the pipe separator. Likewise, the UV lamp can also be provided at another location within the separation space 14. For the mode of operation, however, it is essential that the separating space 14 has no further connection to the surroundings except via the filter 24, that is to say in particular that a viewing window for reading the position of the slide 10 is inserted into the housing 2 in a sealed manner.

The second embodiment of the invention shown in FIG. 2 differs from the embodiment according to FIG. 1 in that the opening 17 is not provided and therefore no liquid from the outlet 6 even in the second position of the slide 10 shown in FIG. 2 can get into the separation space 14. As can be seen from FIG. 2, in the second position of the slide 10 there is the connecting channel 15 with one in the first cylindrical region

3 in connection with the area of the separation space 14 created by the upward movements of the slide 10. This area is via a bore 40 provided in the slide 10 and via the channel 16 with that in the second cylindrical area

4 contained separation room connected. This would also in this embodiment dirt from entering into the Verbindungs¬ channel 15 when ^"these could get into the separation chamber 14. This is prevented by the filter 24, so that an introduction of impurities into the pipe system is no longer possible. In the embodiment shown in FIG. 1, in addition to the outlet led through the siphon, an air inlet opening 41 is provided at a distance vertically above the siphon, which is closed by a bacterial filter 42. It is thereby achieved that, on the one hand, air drawn in from the outside into the separating space 14 is always conducted via the bacterial filter 42, but on the other hand water to be discharged is discharged in a bacteria-proof manner via the siphon.

CM

Claims

PATENT CLAIMS

1. Pipe separator with a housing with an inlet, an outlet and a separable separable space, and with a blocking element that connects the inlet to the outlet in a first position and separates the inlet from the outlet and the outlet with in a second position connects the separation space, characterized in that the separation space (14) is sealed against contamination.

2. Pipe separator according to claim 1, characterized in that a filter between the separation space (14) and the drain (9)

(24) for cleaning air entering the separation chamber (14) via the drain (9) from impurities and / or bacteria.

3. Pipe separator according to claim 2, characterized in that the filter (24) is provided in the housing (2).

4. Pipe separator according to claim 2 or 3, characterized in that the filter (24) has a siphon (25).

5. Pipe separator according to claim 4, characterized in that the pipe separator (1) is designed so that when switching the locking element (10) from the first to the second

Position displaced liquid can be introduced into the siphon (25).

6. Pipe separator according to one of claims 2 to 5, characterized in that the filter (24) has a silver-plated surface (36, 37, 38).

7. Pipe separator according to one of claims 2 to 6, characterized in that a UV lamp (34) is provided in the filter (24) and / or in the separation space (14).