RU172571U1 - GATE VALVE FOR STEEL FILLING DUCKS - Google Patents

Abstract

The invention relates to metallurgy, and in particular to devices for casting metal from a ladle. The device comprises a housing with a fixed upper part, a fixed sliding plate installed in it, spring blocks and alternating damper elements with them; with a movable part in which a movable slide plate is installed; bottom with holder. Supporting rollers are located in the niches of the movable part of the housing for uniform sliding of the movable part of the housing. The proposed design of the slide gate is reliable in operation, high-tech, and has an extended period of use of the refractory part. 3 of FIG.

Description

The utility model relates to metallurgy, to devices for casting metal from a ladle.

Known slide gate, comprising a housing consisting of a movable and fixed parts, with the slide plates located therein, guides and spring elements for compressing the slide plates (FR No. 240042, A1, B22D 41/08, 03.16.1979).

The disadvantages of this design are the insufficiently high operational properties, in particular the limited service life of the slide plates due to the instability of their pressing against each other.

The closest in the claimed is a slide gate, comprising a housing with guides, an upper fixed part with a fixed gate plate, a movable part with a movable gate plate, a lower part pivotally connected to the movable part and held by the holder. The device also contains spring blocks located uniformly on the upper stationary part on both sides of the pouring hole and cylindrical rollers assembled in a separator and located on straight guides mounted on both sides of the movable part of the housing. (Patent RU No. 2585583, IPC B22D 41/40, published on 05.27.2016).

The disadvantages of this design of the slide gate is the insufficient compression of the slide plates, since the slide gate is structurally made according to the combination of compressible elements, such as a semi-rigid shutter. The gradient of high temperatures affects the spring blocks, the elastic properties of which vary with temperature, reducing the compression efficiency of the slide plates, and the insufficient uniformity of the load distribution, leads to the premature decommissioning of the slide plates. In addition, the use of a separator for the support rollers contributes to the jamming of the support rollers during movement, makes their replacement time-consuming, complicates the design of the shutter and increases its cost.

The objective of the proposed utility model is to increase the reliability of the structure, increase the service life, as well as the manufacturability and low cost of the slide gate.

The problem is achieved in that the slide gate, comprising a housing with a top fixed part, a fixed gate plate installed in it, a movable part with a movable gate plate, a lower part with a holder, as well as spring blocks and support rollers, is additionally equipped with damper elements, located on the upper stationary part along the axis with the spring blocks and in the order of alternation with them, and the movable part of the body is made with niches on both sides of the steel pouring hole for installing support p faces.

The technical result consists in creating a more stable pressing of the sliding plates to each other due to the uniform distribution of the pressing elements (spring blocks and damper elements) in the upper fixed part of the shutter housing, as well as reducing friction between the lower and moving parts of the housing.

The technical result is achieved by the fact that on the upper fixed part of the housing along the axis with the spring blocks and in alternating order with them are damping elements that connect the upper fixed and moving parts of the housing through the grooves in the shoulders and thereby additionally contribute to the pressing of the slide plates. The damper elements enhance the operation of the spring blocks during compression, contribute to the redistribution of the load due to its more rigid execution, and also eliminate the vibrations arising from the compression of the spring blocks. In addition, the clamping of the slate plates is eliminated, which increases their service life. The gate valve elements operate in harsh operating conditions, namely, at high temperatures and under heavy load. In this regard, a set of metal plates, hollow metal cylinders, etc. can be used as damping elements.

The technical result is achieved by the fact that the movable part of the housing is made with niches on both sides of the steel pouring hole for installing support rollers, which are a set of axial-free cylindrical bodies of rolling elements forming a single linear bearing without the use of a separator. In this regard, the design of the shutter is simplified, its cost is reduced due to the lack of the need for a bearing cage, fixation and fastening elements. In addition, uniform movement of the moving part of the housing along the support rollers with minimal rolling resistance is ensured.

The utility model is illustrated by drawings, where in FIG. 1 shows a general view of the slide gate with the deployed gate assembly (in the open position); in FIG. 2 shows a General view of the slide gate in working condition with spring blocks and damper elements: a - view of the upper stationary part, b - view of the lower part of the housing; in FIG. 3 - movable part of the housing with the location of the support rollers.

In the figures, the positions indicated:

1 - upper stationary part;

2 - fixed slide plate;

3 - moving part;

4 - movable slide plate;

5 - the lower part of the housing;

6 - spring blocks;

7 - damper elements;

8 - drive bracket;

9 - a rod of a drive;

10 - supporting rollers;

11 - swivel;

12 - collector holder;

13 - shutter stopper;

14 - node mounting to the bucket.

The slide gate includes the upper fixed part 1, where the fixed slide plate 2 is installed, the movable part 3 with the movable slide plate 4, the lower part of the housing 5. The spring blocks 6 and the damper elements 7 are installed in the shoulders of the upper fixed part 1. The movement of the movable part 3 is carried out by the drive bracket 8, with the drive rod 9 located therein. As a rule, external electric or hydraulic systems, for example, a hydraulic cylinder, are used. The reciprocating movement of the movable part 3 relative to the upper stationary part 1 is controlled by supporting rollers 10 installed in the niches of the movable part 3 ,. The upper stationary part 1 is connected to the lower part of the housing 5 by means of a swivel 11. The stoppers 13 serve to fix the lower part of the housing 5 in the closed position of the shutter. The lower part of the housing 5 is equipped with a collector holder 12. The upper fixed part 1 is attached to the bucket using the mount 14.

The shutter operates as follows. The upper fixed part 1 of the shutter with the fixed sliding plate 2 installed in it is rigidly fixed to the steel pouring ladle by the attachment unit 14. All basic technological operations are carried out relative to the moving part of the housing 3. A moving sliding plate 4 is mounted in the moving part of the housing 3. By turning the lower part of the housing 5 connected through a swivel joint 11 with the upper fixed part 1, the shutter is closed and then locked by two stoppers 13. This causes a uniform compression spring blocks 6, after which the tension of the damper elements 7, which close the kinematic circuit. The final step in the assembly of the shutter is the installation of the collector holder 12 with the installed collector cup (not shown) in the movable part 2. Using an external drive (for example, a hydraulic cylinder) through the actuator bracket 8 and actuator rod 9, force is applied to the movable part 2, which makes reciprocating movements, by means of support rollers 10 installed in niches of the movable part of the housing 3, producing “opening / closing” of the steel-outlet channel of the slide gate.

The proposed design of the slide gate allows you to stabilize the casting process due to the reliability of the structure, to increase the operational properties of the elements, to reduce the cost.

Claims (1)

A slide gate for steel pouring ladles, comprising a housing with an upper fixed part with a fixed slide plate, a movable part with a movable slide plate and a lower rotary part with a holder, spring blocks and support rollers, characterized in that it is equipped with damper elements located on the upper fixed part the casing along the axis with the spring blocks and in alternating order with them, and the movable part of the casing has niches on both sides of the steel pouring hole for installing said support rollers.

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