A material scraping device for a grate cooler

Abstract

The application discloses a clinker cooler with a material scraping device, a plurality of sealing beams sliding on both sides of the top of a section beam, a plurality of grate plates fixed between the sealing beams, a plurality of drive cylinders arranged at the bottom of the section beam, the output ends of the drive cylinders being fixedly connected with the section beam, a plurality of first scrapers fixedly arranged on the section beam along the clinker conveying direction, a plurality of supports arranged on the top of the section beam and arranged between the grate plates in pairs, the thicknesses of the supports being consistent with the thicknesses of the corresponding first scrapers, a plurality of second scrapers arranged on the top of the supports, and the lengths of the second scrapers being greater than or equal to the sum of the lengths of the adjacent grate plates. In the application, the first scrapers are fixedly arranged on the section beam along the clinker conveying direction, the surface layer of the clinker is scraped through the periodic movement of the section beam, and local accumulation is avoided. The second scrapers cover the width range of the adjacent grate plates, a continuous scraping surface is formed through the fixing of the supports, the residual clinker in the grate gap is removed when the grate plates retreat, and the continuity and stability of the clinker conveying are improved.

Description

Technical Field

[0001] This application relates to the field of grate cooler technology, and more particularly to a scraping device for a grate cooler. Background Technology

[0002] The grate cooler mainly consists of clinker piled on a trough-shaped movable grate bed, which is then conveyed forward as the grate bed moves. The grate bed is typically operated with a thick layer of clinker, through which cold air is passed for cooling. The movement of the grate bed involves multiple rows of grates simultaneously extending, while individual rows of grates alternately retract, resulting in efficient material conveying.

[0003] However, grate coolers inevitably have the problem of excessively thick dead material zones on the grate. When the total thickness of the material layer is fixed, the clinker in the dead material zone can move with the grate but cannot be transported away. When the dead material zone occupies a certain height of clinker, it will inevitably reduce the effective height of clinker transport and reduce the heat exchange time between hot materials and cold air.

[0004] Therefore, there is an urgent need for a scraping device for grate coolers to solve the above problems. Utility Model Content

[0005] This application provides a scraping device for a grate cooler, which aims to reduce the coverage of the dead material zone on the grate bed and improve the clinker conveying efficiency of the grate cooler.

[0006] To achieve the above objectives, this application provides the following technical solutions:

[0007] A scraping device for a grate cooler comprises multiple segmented beams, multiple sealing beams, multiple grate plates, multiple drive cylinders, multiple first scrapers, multiple supports, and multiple second scrapers. The multiple segmented beams are arranged side-by-side along the clinker conveying direction. Multiple sealing beams are spaced apart on both sides of the top of corresponding segmented beams, with their ends fixedly connected to an external frame. Multiple grate plates are fixedly arranged between adjacent sealing beams. Multiple drive cylinders are located at the bottom of corresponding segmented beams, and their output ends are fixedly connected to the corresponding segmented beams. Multiple first scrapers are fixedly arranged on the segmented beams along the clinker conveying direction. Multiple supports are staggered along the clinker conveying direction on the top of corresponding segmented beams and positioned between pairs of grate plates, with the thickness of the supports matching the thickness of the corresponding first scrapers. Multiple second scrapers are fixedly arranged on the top of corresponding supports, and the length of the multiple second scrapers is greater than or equal to the sum of the lengths of adjacent grate plates.

[0008] Furthermore, the length direction of the support is consistent with the parallel direction of the multiple beam sections, the width direction of the multiple grates is consistent with the length direction of the support, and the multiple first scrapers are equally spaced along the length direction of the beam sections and are staggered between the corresponding grates along the length direction of the beam sections.

[0009] Furthermore, the multiple second scrapers include vertical sections and inclined sections;

[0010] The vertical section is fixedly installed on the side of the support closer to the clinker conveying direction, and the length of the vertical section is the same as the length of the support.

[0011] The inclined section is fixedly installed at the top of the vertical section, and the top end face of the inclined section is inclined from front to back from the clinker conveying direction.

[0012] Furthermore, multiple flexible grate bars are spaced apart on the bottom side of the vertical section away from the support, and the ends of the multiple flexible grate bars away from the vertical section abut against the surface of the grate plate.

[0013] Furthermore, a mounting groove is recessed on the side of the vertical section near the support, and a screw is provided on the support along the clinker conveying direction. The screw passes through the support and extends into the mounting groove, and its circumference is threadedly connected to the mounting groove.

[0014] Furthermore, the vertical section and the inclined section are integrally formed structures.

[0015] One or more technical solutions provided in the embodiments of this utility model have at least the following technical effects or advantages:

[0016] In this application, the first scraper is fixedly mounted on the segment beam along the clinker conveying direction. The periodic movement of the segment beam scrapes away the surface clinker, preventing local accumulation. The second scraper covers the width of the adjacent grate and is fixed by a bracket to form a continuous scraping surface. When the grate retracts, it removes residual clinker from the grate gaps, thereby improving the continuity and stability of clinker conveying. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments of this utility model or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural schematic diagram of the assembled state provided in the embodiments of this application;

[0019] Figure 2 for Figure 1 A magnified view of a portion of region A in the middle;

[0020] Figure 3 This is a schematic diagram of the structure of the second scraper and flexible grate provided in an embodiment of this application.

[0021] Icons: 10-section beam; 11-grate plate; 12-drive cylinder; 13-first scraper; 14-support; 15-second scraper; 151-vertical section; 152-inclined section; 16-flexible grate bar; 17-screw; 18-sealing beam. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0023] In the description of the embodiments of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0024] Combination Figures 1-3As shown, a scraping device for a grate cooler is characterized by comprising multiple segmented beams 10, multiple sealing beams 18, multiple grate plates 11, multiple drive cylinders 12, multiple first scrapers 13, multiple supports 14, and multiple second scrapers 15; the multiple segmented beams 10 are arranged side by side along the clinker conveying direction; the multiple sealing beams 18 are spaced apart on both sides of the top of the corresponding segmented beams 10, and their ends are fixedly connected to an external frame; the multiple grate plates 11 are fixedly arranged between adjacent sealing beams 18; and the multiple drive cylinders 12 are arranged at the bottom of the corresponding segmented beams 10. The clinker section has multiple drive cylinders 12 whose output ends are fixedly connected to the corresponding section beams 10; multiple first scrapers 13 are fixedly mounted on the section beams 10 along the clinker conveying direction; multiple supports 14 are staggered along the clinker conveying direction on the top of the corresponding section beams 10 and placed between each pair of grate plates 11, and the thickness of the multiple supports 14 is the same as the thickness of the corresponding first scrapers 13; multiple second scrapers 15 are fixedly mounted on the top of the corresponding supports 14, and the length of the multiple second scrapers 15 is greater than or equal to the sum of the lengths of the adjacent grate plates 11.

[0025] In the above scheme, the first scraper 13 is fixedly mounted on the segment beam 10 along the clinker conveying direction. When the drive cylinder 12 drives the segment beam 10 to move horizontally, the first scraper 13 moves relative to the segment beam 10, and its end face moves relative to the surface of the grate 11, thereby scraping off the clinker adhering to the surface of the grate 11, preventing clinker from accumulating on the grate 11, and ensuring the air permeability of the grate 11 and the normal conveying of clinker. Multiple supports 14 are staggered on the top of the corresponding segment beams 10 and placed between pairs of grate 11 along the clinker conveying direction, and the thickness of the supports 14 is the same as the thickness of the corresponding first scraper 13. This not only provides installation support for the second scraper 15, but also enhances the structural strength and stability of the entire scraping device by its staggered arrangement, while ensuring the relative positional accuracy between the first scraper 13 and the second scraper 15. Multiple second scrapers 15 are fixedly mounted on the top of the corresponding supports 14, and the length of the second scraper 15 is greater than or equal to the sum of the lengths of the adjacent grate 11. The second scraper 15, building upon the scraping capability of the first scraper 13, further expands the scraping range, enabling the cleaning of a larger area of ​​clinker. Due to its length design, the second scraper 15 can cover multiple adjacent grate plate 11 areas, ensuring effective scraping of clinker regardless of its location during transport. Specifically, when the odd-numbered column beams 10 move, the second scraper 15 simultaneously pushes the clinker on both the odd-numbered and adjacent even-numbered columns of grate plates 11; conversely, when the even-numbered column beams 10 move, the second scraper 15 simultaneously pushes the clinker on both the even-numbered and adjacent odd-numbered columns of grate plates 11, significantly improving clinker transport efficiency.

[0026] The length direction of the support 14 is consistent with the parallel direction of the multiple beam sections 10, the width direction of the multiple grate plates 11 is consistent with the length direction of the support 14, and the multiple first scrapers 13 are equally spaced along the length direction of the beam section 10 and are staggered between the corresponding grate plates 11 along the length direction of the beam section 10.

[0027] In the above scheme, multiple first scrapers 13 are evenly spaced along the length of the segment beam 10. This arrangement ensures that, in the clinker conveying direction, a scraper performs a scraping operation on the surface of the grate plate 11 at regular intervals. The evenly spaced arrangement of the first scrapers 13 makes the scraping action regular and continuous, enabling continuous and stable removal of clinker adhering to the surface of the grate plate 11, avoiding scraping dead corners or uneven scraping. The first scrapers 13 are staggered along the length of the segment beam 10 between corresponding grate plates 11. Since the distribution of clinker on the grate plate 11 may be uneven, the staggered arrangement of the first scrapers 13 can scrape the surface of the grate plate 11 from different positions and angles, increasing the contact range and scraping frequency between the scraper and the surface of the grate plate 11. When the drive cylinder 12 drives the segment beam 10 to move horizontally, the staggered second scrapers 15 can more comprehensively and thoroughly scrape the clinker on the grate plate 11, improving scraping efficiency.

[0028] The multiple second scrapers 15 include a vertical section 151 and an inclined section 152; the vertical section 151 is fixedly disposed on the side of the support 14 near the clinker conveying direction, and the length of the vertical section 151 is the same as the length of the support 14; the inclined section 152 is fixedly disposed on the top of the vertical section 151, and the top end face of the inclined section 152 is inclined from front to back from the clinker conveying direction.

[0029] In the above scheme, the vertical section 151 is the same length as the support 14, ensuring the matching of the second scraper 15 and the grate 11 structure, and avoiding material jamming due to dimensional deviations. The vertical section 151 is fixed on the side of the support 14 near the conveying direction, and can directly act on the front end of the dead material zone, forming an initial obstruction and guidance for the accumulated clinker. The inclined section 152 is set from the clinker conveying direction at the end face inclined from front to back, so that the clinker is gradually lifted and pushed backward along the inclined direction when the grate moves, preventing the pushed material from being carried back twice, breaking the static accumulation state of the dead material zone, and reducing the possibility of material backflow.

[0030] Multiple flexible grate bars 16 are spaced apart on the bottom side of the vertical section 151 away from the support 14, and the ends of the multiple flexible grate bars 16 away from the vertical section 151 abut against the surface of the grate plate 11.

[0031] In the above scheme, the flexible grate bars 16 on the side of the bottom of the vertical section 151 away from the support 14 are arranged at intervals. This avoids excessive scraping resistance caused by dense grate bars and covers the surface of the grate plate 11 through multi-point contact. The flexible material causes the grate bars to undergo elastic deformation when in contact with the grate plate 11. This can adapt to the uneven working conditions of the grate plate 11 surface and maintain contact pressure during the movement of the grate plate 11, thereby effectively scraping off the dead material attached to the grate plate 11. The design of the grate bar ends contacting the surface of the grate plate 11 ensures that the scraping action is directly applied to the working surface of the grate plate 11, avoiding the accumulation of material in the gaps of the grate plate 11, thereby improving the efficiency of clinker conveying.

[0032] The vertical section 151 has a recessed mounting groove on the side near the bracket 14. The bracket 14 is provided with a screw 17 along the clinker conveying direction. The screw 17 passes through the bracket 14 and extends into the mounting groove, and its circumference is threadedly connected to the mounting groove.

[0033] In the above solution, by setting an installation groove in the vertical section 151 of the second scraper 15 and forming a threaded connection with the screw 17 on the bracket 14, the bracket 14 and the second scraper 15 are double-fixed. The recessed installation groove allows the screw 17 to be accurately embedded inside the vertical section 151, and the radial tightening force generated by the threaded connection can offset the transverse shearing force generated by the reciprocating motion of the grate.

[0034] The vertical section 151 and the inclined section 152 are integrally formed structures.

[0035] The purpose of this design is that the one-piece molded structure eliminates assembly gaps or weak welding points that may exist in traditional split connections. It also ensures a more uniform stress distribution across the scraper, effectively preventing stress concentration and breakage risks at the joints when subjected to alternating loads from the pushing of the clinker layer and the movement of the grate. Furthermore, the one-piece molded second scraper 15 reduces the possibility of component loosening due to vibration, ensuring that the second scraper 15 maintains a stable geometry during long-term operation, thereby maintaining its continuous and effective scraping capability for materials in the dead zone.

[0036] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0037] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. A scraping device for a grate cooler, characterized in that, Multiple segment beams (10), multiple sealing beams (18), multiple grate plates (11), multiple drive cylinders (12), multiple first scrapers (13), multiple brackets (14) and multiple second scrapers (15); Multiple sections (10) are arranged side by side along the clinker conveying direction; Multiple sealing beams (18) are spaced apart on the top two sides of the corresponding section beam (10), and their two ends are fixedly connected to the external frame; Multiple of the aforementioned grate plates (11) are fixedly disposed between adjacent sealing beams (18); Multiple drive cylinders (12) are disposed at the bottom of the corresponding section beam (10), and the output ends of the multiple drive cylinders (12) are fixedly connected to the corresponding section beam (10); Multiple first scrapers (13) are fixedly disposed on the section beam (10) along the clinker conveying direction; Multiple supports (14) are staggered on the top of the corresponding section beam (10) along the clinker conveying direction and placed between each pair of the grate (11), and the thickness of the multiple supports (14) is the same as the thickness of the corresponding first scraper (13); Multiple second scrapers (15) are fixedly disposed on the top of the corresponding bracket (14), and the length of the multiple second scrapers (15) is greater than or equal to the sum of the lengths of the adjacent grate plates (11).

2. The scraping device for a grate cooler according to claim 1, characterized in that, The length direction of the support (14) is consistent with the parallel direction of the multiple section beams (10), the width direction of the multiple grate plates (11) is consistent with the length direction of the support (14), and the multiple first scrapers (13) are equally spaced along the length direction of the section beams (10) and are staggered between the corresponding grate plates (11) along the length direction of the section beams (10).

3. The scraping device for a grate cooler according to claim 1, characterized in that, The plurality of second scrapers (15) include a vertical section (151) and an inclined section (152); The vertical section (151) is fixedly installed on the side of the support (14) near the clinker conveying direction, and the length of the vertical section (151) is the same as the length of the support (14); The inclined section (152) is fixedly installed on the top of the vertical section (151), and the top end face of the inclined section (152) is inclined from front to back from the clinker conveying direction.

4. The scraping device for a grate cooler according to claim 3, characterized in that, The bottom of the vertical section (151) is provided with a plurality of flexible grate bars (16) at intervals on the side away from the support (14), and the ends of the plurality of flexible grate bars (16) away from the vertical section (151) abut against the surface of the grate plate (11).

5. The scraping device for a grate cooler according to claim 4, characterized in that, The vertical section (151) has a recessed mounting groove on one side near the bracket (14). The bracket (14) is provided with a screw (17) along the clinker conveying direction. The screw (17) passes through the bracket (14) and extends into the mounting groove, and its circumference is threadedly connected to the mounting groove.

6. The scraping device for a grate cooler according to claim 3, characterized in that, The vertical section (151) and the inclined section (152) are integrally formed.

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