DE2521142B1 - Throttle deuce with textile or synthetic fibres - fibres hang freely in flow direction in region of choke cross section - Google Patents

Abstract

Choke device where a number of textile-or synthetic fibres (3) which hang freely in the flow direction are arranged in the region of a throttle cross-section. Specifically, the fibres (3) are suspended on a filter (2) or on a sprung throttle body (4) in which case the throttle body has radially outwards directed struts (41), by which it is supported on a coil compression spring (5). More specifically, a cylindrical filter frame (6) which encloses the fibres (3) is provided on the throttle body (4). Alternatively, the fibres are suspended on the closure piece of a valve which closes in the direction of flow.

Description

Claims: 1. Throttle device, thereby g e k e n n -z e i c h n e t that in the area of a throttle cross section a large number of in the flow direction freely hanging textile or plastic threads (3) is arranged.

2. Flow throttle device according to claim 1, characterized in that that the threads (3) are suspended from a sieve (2).

3. Flow throttle device according to claim 1, characterized in that that the threads (3) are suspended from a sprung throttle body (4).

4. Flow throttle device according to claim 1 and 3, characterized in that that the throttle body (4) has radially outwardly directed webs (41) with which it is supported on a helical compression spring (5).

5. flow throttle device according to claim 1 and 3, characterized in that that on the throttle body (4) a cylindrical screen structure enclosing the threads (3) (6) is provided.

6. flow throttle device according to claim 1 and 3, characterized in that that the threads on the closure piece of a valve that closes in the flow direction are hung.

7. flow throttle device according to claim 1 and 2 or claim 1 and 3, characterized in that in the direction of flow behind the freely suspended Threads (3) a sieve closing off the outlet cross-section is arranged.

Throttle devices for liquids are available in various designs known, but have the known devices of this type, especially with strong Pressure reduction has the disadvantage that there is a tendency to generate a lot of noise. Besides, the throttled liquid, if flowing into an open container, through in The turbulence created by the throttle device is very restless and leads to splashes.

The generation of noise in throttling devices and the one that often follows Choppy water currents are often caused by guiding the fluids into narrow crevices (laminar flow), by arranging sieves or similar measures in certain Limits kept.

Apart from the manufacturing complexity, such devices have the disadvantage that it increases with impurities contained in the flowing medium Prone to blockages.

The invention is therefore based on the object of an anti-pollution To create insensitive throttle device, through which at relatively low Effort a low-noise pressure reduction can be achieved.

The solution to this problem is that in the area of the throttle cross-section a large number of textile fabrics hanging freely in the direction of flow or plastic threads is arranged.

Advantageous further developments are listed in the subclaims.

Embodiments of the invention are shown below with reference to the drawings explained in more detail.

F i g. 1 shows a longitudinal section through one according to the invention formed throttling pipe section, Figure 2 shows a longitudinal section through a throttling Pipe section with spring-loaded throttle body arranged therein, FIG. 3 shows a section along the line 111-111 in FIG. 1.

In the embodiment according to FIG. list in the stepped pipe section 1 a coarse-meshed screen 2 is arranged on which a large number of textile or plastic threads 3 is freely suspended in the flow direction of the medium.

In the case of a short pipe section 1, a relatively large number of short threads 3 arranged, while longer pipe sections preferably provides a small number of longer threads. Because fewer threads one greater mobility of the threads against each other and thus easier passage of Mean dirt particles, it is advantageous to use the throttle threads, for example Plumbing fittings should be dimensioned so long that they extend over the entire length of the spout the fitting extend.

An additional sieve is then expediently arranged at the mouth, that not only causes a further calming of the emerging jet, but the threads also hides optically and thus possible prejudices against them Excludes type of throttling from the outset.

FIGS. 2 and 3 show an embodiment in which threads 3 are suspended from a throttle body 4, the radially outwardly directed webs 41, with which it is supported on a helical compression spring 5. Further is on the throttle body 4, the threads 3 enclosing, cylindrical sieve structure 6 attached, through which better guidance 3 is guaranteed.

Claims (1)

If a medium flows through the throttle device, it shifts the throttle body 4 in the flow direction. The threads 3 cause a low-noise and turbulence-free pressure reduction. The illustrated principle of the throttle device can also be transferred to a low-noise closing valve. The throttle body 4 must then be designed as a valve closure piece that closes in the direction of flow be. A closure piece that closes against the direction of flow would have to be technical In the same way, immerse yourself in a »thread socket«.