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CN-224208541-U - Movable grate screen

CN224208541UCN 224208541 UCN224208541 UCN 224208541UCN-224208541-U

Abstract

The utility model discloses a movable grate screen, which relates to the technical field of coke classifying and screening and comprises a main body frame, a movable frame, a telescopic piece and a supporting seat, wherein a plurality of fixed grate bars are longitudinally arranged on the main body frame at intervals in parallel, one end of the movable frame is rotationally connected with the main body frame, a plurality of movable grate bars are longitudinally arranged on the movable frame at intervals in parallel, each movable grate bar is arranged between the adjacent fixed grate bars, and the telescopic piece is arranged on the supporting seat and is rotationally connected with the other end of the movable frame, so that the movable frame can reciprocate in the vertical direction. Above-mentioned movable grate screen has solved the manual high technical problem of clearance risk of post personnel, has realized reducing the manual technical effect who clears up the jam risk.

Inventors

  • CHEN ANBING
  • HUANG QIANG
  • HE XIAOLONG
  • SUN XIAOYONG
  • LOU XIAOHUA

Assignees

  • 攀钢集团西昌钢钒有限公司

Dates

Publication Date
20260508
Application Date
20250418

Claims (8)

  1. 1. A movable grate screen comprising: A main body frame (1), wherein a plurality of fixed grate bars (2) are longitudinally arranged on the main body frame (1) and are spaced in parallel; the movable framework (3), one end of the movable framework (3) is rotationally connected with the main body framework (1), a plurality of parallel spaced movable grate bars (4) are longitudinally arranged on the movable framework (3), and each movable grate bar (4) is arranged between the adjacent fixed grate bars (2); The telescopic piece (5) is arranged on the supporting seat and is rotationally connected with the other end of the movable frame (3), so that the movable frame (3) can reciprocate in the vertical direction.
  2. 2. The movable grate screen of claim 1, wherein the fixed grate bars (2) are arranged on the main body frame (1) through first support blocks (6), and the movable grate bars (4) are arranged on the movable frame (3) through second support blocks (7).
  3. 3. The movable grate screen of claim 2 wherein the main body frame (1) and the movable frame (3) are rotatably connected by a hinge shaft.
  4. 4. The movable grate screen as claimed in claim 1, wherein the output end of the telescopic member (5) is provided with a first connecting sleeve, the movable frame (3) is provided with a second connecting sleeve, and the first connecting sleeve is connected with the second connecting sleeve through a rotating shaft.
  5. 5. The movable grate screen of claim 4 wherein the shaft is detachably connected to the main frame (1).
  6. 6. The movable grate screen of claim 1, wherein the telescoping member (5) is a hydraulic cylinder or an electric push rod.
  7. 7. The movable grate screen of claim 1, wherein the telescoping member (5) is provided with a travel switch for limiting the travel of the output end of the telescoping member (5).
  8. 8. The movable grate screen of claim 1, wherein the surfaces of the fixed grate bars (2) and the movable grate bars (4) are provided with wear resistant layers.

Description

Movable grate screen Technical Field The utility model relates to the technical field of coke classifying and screening, in particular to a movable grate screen. Background In the smelting process of an iron-making blast furnace, metallurgical coke is used as a key reducing agent and a heat energy provider, and the quality and the supply stability of the metallurgical coke have decisive influence on the running efficiency of the blast furnace and the quality of products. After the coke oven finishes refining, the metallurgical coke is cut into a size meeting the smelting requirement of the blast furnace by a coke cutter, and then screening and grading are carried out to ensure that the granularity of the metallurgical coke entering the blast furnace is uniform and meet the smelting process requirement. However, during actual operation, grate screens face a number of challenges, the most prominent of which is the plugging problem. Due to the differences of physical characteristics (such as granularity, hardness, humidity and the like) of metallurgical coke and improper maintenance, the metallurgical coke is easy to accumulate and block on the screen surface of the grate screen, so that the screening efficiency is influenced, the interruption of subsequent procedures can be caused, and the continuity and the stability of a production line are seriously influenced. Aiming at the problem of blockage of the grate screen, the traditional solution relies on manual cleaning by post personnel. However, this approach presents a number of safety and health risks. When cleaning blocked metallurgical coke, post personnel need to directly stand on the screen surface for operation, and because the screen surface is often covered with wet and slippery metallurgy Jiao Fenchen, accidents such as slipping and falling damage are very easy to occur. Therefore, how to provide a movable grate screen to reduce the risk of manual cleaning blockage is a technical problem that needs to be solved by the person skilled in the art. Disclosure of utility model The utility model aims to provide a movable grate screen, which solves the technical problem of high manual cleaning risk of post personnel. To achieve the above object, the present utility model provides a movable grate screen, comprising: The main body frame is longitudinally provided with a plurality of fixed grate bars which are spaced in parallel; the movable framework is characterized by comprising a main body framework, wherein one end of the main body framework is rotatably connected with the movable framework, a plurality of parallel and spaced movable grate bars are longitudinally arranged on the movable framework, and each movable grate bar is arranged between the adjacent fixed grate bars; The telescopic piece is arranged on the supporting seat and is rotationally connected with the other end of the movable frame, so that the movable frame can reciprocate in the vertical direction. Preferably, the fixed grate bars are arranged on the main body frame through first supporting blocks, and the movable grate bars are arranged on the movable frame through second supporting blocks. Preferably, the main body frame and the movable frame are rotatably connected by a hinge shaft. Preferably, the output end of the telescopic piece is provided with a first connecting sleeve, the movable frame is provided with a second connecting sleeve, and the first connecting sleeve is connected with the second connecting sleeve through a rotating shaft. Preferably, the connection mode of the rotating shaft and the main body frame is detachable connection. Preferably, the telescopic piece is a hydraulic cylinder or an electric push rod. Preferably, a travel switch is arranged on the telescopic member and is used for limiting the movement travel of the output end of the telescopic member. Preferably, the surfaces of the fixed grate bar and the movable grate bar are provided with wear-resistant layers. Compared with the background art, the movable grate screen provided by the utility model has the advantages that when the telescopic piece is contracted downwards, the movable frame descends for a certain distance, and then metallurgical coke accumulated on the screen surface of the grate screen falls from the sunken movable grate gaps, and then the telescopic piece is restored to the initial position, so that the movable frame is in the initial position, and further the risk of manual cleaning blockage is reduced. Drawings In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person s