DE8632989U1 - Flat slide valve - Google Patents

Description

. P.AJ.e NTAU WALTE

'iFLÄQHi'H^UG · KNEISSL

EUROPEAN PATENT ATTORNEYS

. Pitenl»'. J«lt DIpI,-Phy». Flach, Prlnzrogentemtr. 24, D-MOO Rosenhelm .

Südstall GmbH 8264 Waldkraiburg

ROSENHEIM Dlpl.-Phys. Dieter Flach Prinzregentenstraße 24 D-82C0 Rosenhelm Telephone: (0 8031)17352 Fax: (08031) 179 72 (Qr.3/2) Telex: 5 216P81 alho d Telegram: Physicist Rosenhelm

MUNICH

Dlpl.-Chem. Dr.8teffen Andrae Dlpl.-Ing. Dietmar Haug Dlpl.-Chem. Dr. Richard Kneissl Sieinsirasse 44 D-8000 Munich 80 Telephone: (089)482089 Telegram: pagema Munich

210 G11

Flat slide valve

The invention relates to a flat slide valve according to the preamble of claim 1.

Such flat slide valves are installed at the end of pipelines to close or reopen them. For example, in the case of pipe ends running into sewage sludge tanks, the generic flat slide valves can be used to close the pipe ends located there.

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Hypobank Rosenheim (BLZ70020001) Account No. Cf

" ·"; ;'pp3t?fhqckamt Munich (bank code 70010080) account no. 327284-807

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Known flat slide valves can be closed from above using a pull rod and opened again by lifting them. The problem with these slide valves is that after a longer or shorter time in the closed position, or if they are not operated, they become stuck and are difficult to open. Since the slide valves are operated manually from the top of a basin, for example, using the pull rod, forces of up to well over a hundredweight must often be applied to open the stuck flat slide valves again. The high forces required are also due to the fact that claws are formed on the pipe ends, which press the flat slide valve firmly against the pipe end opening in the closed position to ensure a secure closure. However, this creates the sometimes enormous friction forces that must be overcome when opening.

For this reason, it has already been proposed to provide an actuating element in the form of a threaded spindle instead of a pull rod that can only be moved vertically. By turning the spindle, the flat slide valve can be raised to its final open position and returned to its closed position by turning it in the opposite direction. By using the spindle, the forces required to open the flat slide valve can be significantly minimized. However, this has the disadvantage that the opening and closing process takes a considerable amount of time due to the many turns of the spindle that are necessary. Of course, the design of a spindle is also more expensive.

The object of the present invention is therefore to design a simple flat slide valve for closing pipe ends, which can be opened and closed quickly, and in which the forces required, in particular, when opening the flat slide valve, are

jjl overall easy handling is only extremely small.

h The object is achieved according to the invention in accordance with

|i characterizing part of claim 1 specified feature

10 times solved. Advantageous embodiments of the invention

are specified in the subclaims.

The flat slide valve according to the invention ensures for the first time that, while being quick and easy to handle, a sliding plate in the closed position never

'"' can be so tight that in manual operation the

applied forces were not sufficient to open the slide. And this despite the fact that the further opening and closing process was simple and quick, as with

I 20 Using conventional tie rods,

5; den can. According to the invention, this is made possible by

that practically during the entire adjustment path of the flat slide valve it is only raised via the pull rod

i>, and is lowered, but that in a first short

I 25 travel in closed position one short thread turn or

|| an inclined contact surface is provided, and that

|i a short twist of the pull rod over the

generated power transmission the necessary large forces

can be used to release the flat slide. 30

In a preferred embodiment of the invention according to claim 2, a thread revolution of two,

¥ Preferably a maximum of one thread turn should be sufficient.

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In an alternative preferred embodiment, the traction support device comprises only two inclination planes that are adjacent to one another in the closed position and are aligned obliquely to the pull rod, so that when the pull rod is twisted, it is inclined relative to its guide device. tion is raised.

According to a further development of the invention, the inclined surfaces can be arranged on the top side of the guide direction for the pull rod and on the other hand on a downward-facing actuating surface of the pull rod. In a preferred embodiment, the pull rod is divided into two parts, with the inclined surface on the actuating section separated from the rest of the pull rod is designed in the form of a key pin.

The overall handling can be further improved by connecting the drawbar to the drawbar via a, preferably a bayonet lock. bindable hand pull key, and that on the other hand on the pull rod or on its actuating section in the form of the key pin, a radially protruding nose is provided, which is guided through a corresponding recess in a floor cover plate By turning the hand wrench and the pull rod, the flat slide valve can then be supported and suspended in the open position on the base plate mentioned above.

Further advantages, details and features of the invention

The following are examples of implementation shown with the help of drawings.

In detail:
Figure 1: a front view of the flat slide valve;

Figure 2 : a schematic side view of the flat

slider according to Figure 1.

The flat slide valve shown in the figures comprises a slide plate 1, which in the closed position sits on the open pipe end 3. In the embodiment shown, the pipe end 3 protrudes, for example, through a wall of a larger basin, for example a sewage sludge basin. The flat slide valve comprises a slide guide 5 in the form of a slide housing with two laterally attached clamping claws 7 with - as shown in Figure 1 - a clamping surface 9 inclined in the closing direction towards the pipe end 3, which holds the slide plate 1 firmly pressed against the pipe end 3 in the closed position.

The clamping claws 7 and the slide guide 5 can be firmly attached to the pipe end using screws 11. For this purpose, in the embodiment shown, the pipe end 3 is provided with a circumferential bead 13, behind which a retaining ring 15 is supported. Using the screws 11 mentioned, the slide guide 5 can be firmly clamped against each other on the bead 13 by screwing it into the retaining ring 15. For secure fastening, additional screws 17 are provided, which are shown offset from Figure 2 to Figure 1 in order to clarify the fastening of the slide housing 1 to the pipe end 3.

The slide guide 5 comprises in plan view

I I · ■

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U-shaped rails 19 pointing in opposite directions, in which an outer opposite section of the slide plate 1 engages and in which the slide plate 1 is guided.

A pull rod 21 is attached to the top of the slide plate 1, which is guided and aligned through a corresponding hole 23 in a guide device 25 consisting of two brackets. For this purpose, the slide plate 1 has an upper fastening attachment 27 with a recess into which a driver sleeve 29 through which the pull rod 21 extends is inserted and anchored via a cylindrical grooved pin 31.

The top of the guide device 25 in the area of the bore 23 is provided with an inclined surface 33, which interacts with a corresponding inclined surface 35 of the pull rod 21. In the embodiment shown, the pull rod 21 is divided and comprises an upper key pin 37. The key pin is also fastened to the lower part of the pull rod 21 via a cross pin 39.

Furthermore, a manual key 41 is provided for operating the slide plate 1, which in the embodiment shown is attached to the key pin 37 via a bayonet lock 43 and can be turned together with it.

Furthermore, a radially projecting nose 45 is formed on the key pin 37, which in one position can be guided through a corresponding recess 47 in an upper cover plate 49.

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III! I · ♦ ·

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The functionality of the flat slide valve is explained below.

To open the flat slide shown in Figures 1 and 2 in the closed position, the manual pull key can be placed over the bayonet lock on the key pin 37 and thus on the pull rod 21 and turned together. By a short turning movement, the inclined surfaces 33 and 35, which run obliquely to the axial direction of the pull rod 21, are turned against each other so that a short axial lifting movement is initiated on the pull rod 21. This traction support device generates so much traction by briefly turning the manual pull key that the slide plate 1 can be easily loosened even when it is stuck. The slide plate 1 released in this way can then be easily raised to its open end position by lifting the manual pull key, with the outer end sections of the slide plate 1 being guided in lateral U-rails of the guide device 25. In the upper end position, the nose 45 is raised above the cover plate 49. By turning the hand wrench 41, the nose 45 can then be placed on the cover plate 49, so that the slide plate 1 can be held above it in its upper open position.

Deviating from the embodiment shown, instead of the aforementioned inclined surfaces 33 and 35, a short thread can also be provided between the pull rod 21 or the key pin 37 forming part of the pull rod and the corresponding upper actuating projection of the guide device 25.

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Here too, the slide plate 1 is first released by a short initial twist, and then the slide plate 1 is raised to its fully open position simply by lifting the pull rod 21.

The closing process takes place in reverse movement, simply by lowering the pull rod in the appropriate direction so that the inclined surfaces 33 and 35 are again parallel to each other and directly in the same direction When a short thread is formed, When lowering the slide plate 1, shortly before reaching the final closing position, a short rotary movement is carried out in the closing direction.

For the sake of completeness, it should be mentioned that in

In the embodiment shown, a support bracket 51 is provided at the lower end of the slide housing for support.

Claims (9)

.. .. PATJiNTAJ^LTE ANDR^E-! FÜAgHi;.;. ^: IHAUG ■ KNEISSL EUROPEAN PATENT ATTORNEYS , Patent Attorney Dlpl.-Phy». Flach. Prlnzragentenatr. 24. D-8200 Rosanhelm . ROSENHEIM Dipl.-Phys. Dieter Flach Prinzregentenstrasse 24 D-82C0 Rosenheim Telephone: (08031)17352 Fax: (08031) 17972 (Qr.3/2) Telex: 5216281 afho d Telegram: Physicist Rosenheim MONKS Dipl.-Chem. Dr. Steffen Andrae Dipl.-Ing. Dietmar Haug Dipl.-Chem. Dr.Richard Kneissl Steinstrasse 44 D-8000 Munich 80 Telephone: (089)482089 Telegram: pagema Munich G11 Flat slide valve Expectations: 1. Flat slide valve for closing pipe ends (3) with a slide plate (1) guided in a slide guide (5) which can be raised and lowered via a pull rod (21) connected to it and guided in a guide device (25), characterized in that the pull rod (21) can be displaced in the guide device (25) without twisting, and that only in a first adjustment path during -01 Hypobwik RoMffltolm (bank code 70020001) account number 6^10·1&bgr;£88&bgr; . ■ Munich (bank code 70010080) Account no. 327284-807 Opening and, if applicable, the final adjustment path when closing the slide plate (1), a traction support device in the form of a thread or inclination plane engagement is provided which is short for the entire adjustment height of the slide plate (1) and acts between the guide device (25) or the slide guide (5) and the pull rod (21). 2. Flat slide valve according to claim 1, characterized in that the traction support device between the pull rod (1) and the guide device (25) or the slide guide (5) comprises a thread with less than two, preferably a maximum of one thread revolution. 3. Flat slide valve according to claim 1, characterized in that the traction support device comprises two inclined surfaces (33, 35) acting between the guide device (25) or the slide guide (5) and the pull rod (21) and running obliquely to the pull rod (21), which lie against one another in the closed position of the slide plate (1). 4. Flat slide valve according to one of claims 1 to 3, characterized in that the oblique inclination surface (33) is formed on the guide device (25) on the side facing away from the slide plate (1). 5. Flat slide valve according to claim 4, characterized in that the inclined surface (33) of the guide device (25) is provided with a bore (23) for receiving the pull rod (21). -02 6. Flat slide valve according to one of claims 1 to 5, characterized in that the oblique inclination surface (35) on the pull rod (21) is formed on an actuating section facing the slide plate (1) with a larger diameter than the diameter of the pull rod (21) in its section guided through the guide device (25). 7. Flat slide valve according to claim 6, characterized in that the pull rod (21) is divided into two in the axial direction and comprises the upper actuating section in the form of a key pin (37) which is connected to the lower section of the pull rod (21). 8. Flat slide valve according to one of claims 1 to 7, characterized in that a manual pull key (41) which can preferably be released via a bayonet lock (43) is located at the upper end of the pull rod (21) or its key pin (37). 9. Flat slide valve according to one of claims 1 to 8, characterized in that a radially projecting nose (45) is provided at the upper end of the pull rod (21), the key pin (37) or the manual key (41), which can be passed through a corresponding key recess (47) made in a cover plate (49) during a lifting movement.