DE3516356A1 - SHUT-OFF VALVE FOR CONTROLLING THE FLOW OF HIGH-FLUID MEDIA PROVIDED WITH HIGH DIRTY PARTS - Google Patents

Abstract

1. Gate valve for controlling viscous media containing a high proportion of dirt, in paticular for use in paper repulping, which comprises a housing (1) provided with a discharge opening and also two valve guides (2) mounted thereon in each of which a linearly extending valve plate (3) is arranged so as to be capable of sliding and the valve guides (2) are at the same time mounted on the housing (1) so that, during the closing or opening operation, the two valve plates (3) can be moved towards each other or away from each other respectively in the discharge opening of the housing (1) and so that, in the closed position, the end pieces, which make contact with each other, of the valve plates (3) come together linearly, characterized in that the valve guides (2) are mounted on the housing (1) in a manner such that, in the closed position, the two valve plates are arranged in a v-shape in the discharge opening, the ends of the valve plates (3) which come together forming the point of the v-shaped arrangement situated at the front in the flow direction (F).

Description

Gate valve to control the flow of viscous , media with high levels of dirt.

The invention relates to a gate valve for controlling the flow of viscous liquids with high levels of dirt provided media, in particular for waste paper processing plants according to the preamble of the patent claim 1.

Gate valves of this type consist in the cone of a sweischaligen housing, with soft between the Sealing strips are inserted in both halves of the housing, to which a slide plate of the gate valve rests in a sealing manner in the closed state. The slide plate will generally operated from the outside via a spindle.

Such gate valves are in use in various designs.

However, environmental awareness has done that more and more Waste materials are recycled and thus ever larger quantities in waste paper processing To deal with contaminants including plastic, ceramic and metal parts in the flow of the material flow are. In particular, it has been shown that in the known designs solid components in the guides of the Penetrate the gate valve, get stuck there and lead to the plague of the gate valve, causing repeated Malfunctions in the waste paper processing plant arise.

The invention is therefore based on the object of a gate valve to control a viscous media provided with a high proportion of dirt so that

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on the slide plate of the gate valve and their Guides cannot seize any foreign bodies.

According to the invention, this object is achieved by the characterizing features of claim 1.

Advantageous refinements of the invention are set out in the subclaims refer to.

In the drawing, the subject of the invention is, as far as it is necessary for an understanding of the invention, shown.

Show it:

1 shows a gate valve with a two-part slide plate in the closed position, in vertical longitudinal section,

FIG. 2 shows a partial section of FIG. 1 according to section B-B and

FIG. 3 shows a part of FIG. 1 after a section

A-A.

The gate valve consists of one in a not shown flowed through line tightly screwed housing 1, as well as two slide guides attached to it 2, in each of which a linear slide plate 3 with drive element 4 is slidably arranged. The slide guides 2 are attached to the housing 1 in such a way that that the two slide plates 3 run in a V-shape to one another, where the tip of the V is at the front in the direction of flow F. Because of this V-shaped arrangement of the two Slide plates 3 is when the closing or opening process

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causes all dirt particles through the disturbance effect, the center of the flow opening of the gate valve » are, so that deposits of foreign bodies on the surface of the slide plates 3, especially in the area the corners forming the mouth of the slide currents

2 should be avoided. Me in the closed position of the valve plates 3 abutting end pieces of the slide plates 3 collide in a straight line, the end piece the one slide plate 3 is formed at an acute angle, while the end piece of the second slide plate 3 is one-sided runs obliquely. See position I of the slide plates

3 the Pig. 1. The foreign bodies in the media flow are easily released when the gate valve is closed separated. In order to avoid pockets or depressions forming in the housing flow space, is in the area of the Slide plates 3, the housing 1 is square. In the retracted position II of the slide plates 3 in the slide guides 2 close the slide plates 3 flush with the housing 1 and avoid any resistance against the media flow flowing through the housing 1 · To stabilize the opening point of the slide guides 2 on the housing 1 are dirt wipers 5 made of metal or hard plastic and stuffing box packings 6, which are directly behind the dirt wiper 5 in the slide guides 2 are built-in, prevent the ingress of liquids or abrasive dirt particles into the Slide guides 2.

As can be seen from Figures 2+ 3, the side edges ~ 7- of the slide plates 3 are rounded and are in guides 8, which are inserted into the housing 1.

To make it easier to clean the slide guides 2, are these with the housing 1 by means of screw connections

_BAD QRtG «NAL

connected, at the same time the slide guides 2 can be dismantled, whereby all wearing parts, sliding guides, Dirt removers 5 and gland packings light are accessible and can be easily cleaned or replaced.

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Claims (6)

Administrative Lohse Heidenheim-Oggenhausen, GmbH & Co KG of April 25, 1985 patent claim 1. Gate valve for controlling the flow of viscous, Media with high Schmitz parts, in particular in the recycling of waste paper, in which d £ r Substance flow through the media by means of two against each other sliding plates is regulated, characterized in that the two sliding plates (3) in the closed position run in a V-shape to each other with the tip at the front in the direction of flow. 2. Gate valve according to claim 1, characterized in that that in the area of the slide plates (3) the housing (1) is square. 3. Gate valve according to claim 2, characterized in that the two slide plates (3) in the open state finish flush with the interior of the housing. 4. Gate valve according to claim 3, characterized in that at the opening points of the slide guides (2) the slide plates (3) the housing 1 with a metallic or made of synthetic resin dirt wiper (5) equipped is. 5. Gate valve according to claim 3 or 4 »characterized in that that in the slide valve guides (2) directly behind the dirt wipers (5) of the housing (1) stuffing box packings (6) are used. - 2 - BATH ORIGINAL oi, 6. Gate valve according to one of the preceding claims, characterized in »that the slide guides are connected to the housing (1) by means of a releasable connection, preferably a screw connection. BATHROOM ORIGINAL - 3 -