阅读说明：本技术 麦尔兹窑出灰锥形料斗密封装置 (Sealing device for ash-discharging conical hopper of Maerz kiln ) 是由 李磊 唐文华 于海 杨英礼 马琨琨 陈小勇 黄尚凌 黄龙杰 袁翔 刘玉安 于 2020-12-04 设计创作，主要内容包括：本发明公开一种麦尔兹窑出灰锥形料斗密封装置,涉及炉窑技术领域,它包括安装在出灰平板上方的出灰锥形料斗、窑壳内支撑耐火砖的钢基础垫板,出灰锥形料斗的顶部在垂直高度上高出钢基础垫板至少5厘米,出灰锥形料斗与钢基础垫板连接处为满焊焊接；在出灰锥形料斗与钢基础垫板连接弧面处间隔焊接有多块三角形筋板；在出灰锥形料斗与钢基础垫板以及窑壳形成的间隙中充满浇注料；浇注料完全覆盖出灰锥形料斗与钢基础垫板焊接部位的背面焊接点和三角形筋板；耐火砖砌筑在硬化后的浇注料上。本发明可以解决现有麦尔兹窑出灰锥形料斗密封结构容易开裂,产生漏风且维修困难,极大影响窑炉正常生产的问题。(The invention discloses a sealing device for an ash-discharging conical hopper of a Mach-Zehnder kiln, which relates to the technical field of kilns and comprises an ash-discharging conical hopper arranged above an ash-discharging flat plate and a steel foundation base plate for supporting refractory bricks in a kiln shell, wherein the top of the ash-discharging conical hopper is provided with the steel foundation base plate at least 5 cm higher than the vertical height of the steel foundation base plate, and the joint of the ash-discharging conical hopper and the steel foundation base plate is subjected to full-weld welding; a plurality of triangular rib plates are welded at intervals at the connecting cambered surface of the ash discharging conical hopper and the steel foundation base plate; filling a casting material in a gap formed by the ash discharge conical hopper, the steel foundation base plate and the kiln shell; the casting material completely covers the back welding point and the triangular rib plate of the welding part of the ash discharging conical hopper and the steel foundation base plate; the refractory bricks are laid on the hardened casting material. The invention can solve the problems that the sealing structure of the ash discharge conical hopper of the existing Maiez kiln is easy to crack, generates air leakage and is difficult to maintain, and the normal production of the kiln is greatly influenced.)

1. The utility model provides a malz kiln goes out grey toper hopper sealing device, includes and supports steel basis backing plate (3) of resistant firebrick (2) in ash outlet cone hopper (5), kiln shell (1) of installing in ash outlet flat board (6) top, its characterized in that: the top of the ash discharging conical hopper (5) is higher than the steel foundation base plate (3) by at least 5 cm in vertical height, and the joint of the ash discharging conical hopper (5) and the steel foundation base plate (3) is subjected to full-length welding; a plurality of triangular rib plates (10) are welded at intervals at the connection cambered surface of the ash discharging conical hopper (5) and the steel foundation base plate (3); filling a casting material (9) in a gap between the ash discharging conical hopper (5) and the steel foundation base plate (3) as well as the kiln shell (1); the casting material (9) completely covers a back welding point (11) of a welding part of the ash discharging conical hopper (5) and the steel foundation base plate (3) and the triangular rib plate (10); the refractory bricks (2) are laid on the hardened castable (9).

2. The mackinz kiln dust extraction cone hopper seal arrangement of claim 1, wherein: the top of the ash discharging conical hopper (5) is 5-7 cm higher than the steel foundation base plate (3) in vertical height.

3. The mackinz kiln dust extraction cone hopper sealing device according to claim 1 or 2, characterized in that: the thickness of the triangular rib plate (10) is 10 cm; the interval distance between two adjacent triangular rib plates (10) is 40-50 mm.

Technical Field

The invention relates to the technical field of furnace kiln production, in particular to a sealing device of an ash discharge conical hopper in a Mach kiln.

Background

The malz kiln has two chambers, one for storing heat while the other for calcining. The direction is changed once every 14 minutes, the hydraulic valve acts during the direction change to release the kiln pressure, and the position of the flashboard is changed at the same time to realize the conversion between the calcining hearth and the heat storage hearth. In the calcining chamber, coal gas was pressurized by a pressurizing machine, fed from 33 lances into the calcining chamber, and mixed with combustion-supporting air introduced from the upper part of the kiln to be combusted. The flue gas generated by calcination flows to the heat storage chamber through the annular channel and the middle channel, flows upwards under the action of cooling air from bottom to top, stores heat of stones which are just added into the heat storage chamber, and enters the flue gas dust remover after the temperature is reduced. Every cycle the system feeds in raw material three times to the heat accumulation thorax, and when kiln section of thick bamboo was closed the apron and is opened at every turn, in order to avoid the raise dust, the system can promote dust exhausting fan rotational speed. In order to ensure the stable material level, the finished product generated by calcination is accurately measured by a material level meter, and the double hydraulic cylinders are used for pushing the ash discharging flat plate to move, so that the lime blocks borne by the ash discharging flat plate in the kiln are suspended and fall into the small storage bin at the bottom of the kiln from the edge due to the displacement of the ash discharging flat plate. During the reversing period, the discharging gate plate is opened, and the lime finished product can enter a finished product production line.

In the structural design of the kiln, the top of an ash discharge conical hopper above an ash discharge flat plate in the kiln is connected with a steel foundation base plate for supporting a refractory brick of the Maerz kiln by welding to form a sealing structure. Because the cambered surface of the welding point is in direct contact with the lime finished product material, a certain amount of abrasion is generated on the welding point in the moving process of continuously discharging the finished product lime material column from top to bottom (such as attached figures 1, 2 and 3). In addition, the sizes of the finished lime particles are different, and the temperature difference of the finished lime is easy to occur through calcination, so that the temperature of materials borne by a welding point of the ash discharging conical hopper is different, and finally, the materials crack under the action of thermal stress, and air leakage is generated.

And go out grey toper hopper on grey dull and stereotyped upper portion and be in the concrete bearing structure of 15 meters platforms of malz kiln, the position is narrow, can't weld at all outside the kiln body, must arrange the material of kiln after, personnel enter the inside processing of kiln, and this maintenance work has greatly influenced the normal production of kiln.

Disclosure of Invention

The invention aims to solve the technical problem of providing a sealing device for an ash discharge conical hopper of a Mailze kiln, which can solve the problems that the sealing structure of the ash discharge conical hopper of the existing Mailze kiln is easy to crack, generates air leakage and is difficult to maintain, and the normal production of the kiln is greatly influenced.

In order to solve the problems, the technical scheme of the invention is as follows: the sealing device for the ash discharging conical hopper of the MailZi kiln comprises an ash discharging conical hopper arranged above an ash discharging flat plate and a steel foundation base plate for supporting refractory bricks of the MailZi kiln in a kiln shell, wherein the top of the ash discharging conical hopper is higher than the steel foundation base plate by at least 5 cm in vertical height, and the joint of the ash discharging conical hopper and the steel foundation base plate is subjected to full-weld welding; a plurality of triangular rib plates are welded at intervals at the connection cambered surface of the ash discharging conical hopper and the steel foundation base plate; pouring a casting material into a gap formed between the ash discharging conical hopper and the steel foundation base plate as well as the kiln shell; the casting material completely covers the back welding point of the welding part of the ash discharging conical hopper and the steel foundation base plate and the triangular rib plate; and the refractory bricks are laid on the hardened castable.

In the above technical solution, a more specific solution is: the top of the ash discharging conical hopper is 5-7 cm higher than the steel base backing plate in vertical height.

Further: the thickness of the triangular rib plate is 10 cm; the spacing distance between two adjacent triangular rib plates is 40-50 mm.

Due to the adoption of the technical scheme, the invention has the following beneficial effects:

according to the invention, the steel foundation backing plate is arranged on the top of the hopper at a vertical height of 5-7 cm, and meanwhile, a welding point on the top of the conical hopper is not in direct contact with finished lime, so that the cracking factor of the welding point is eliminated, and the phenomena of cracking, powder leakage and air leakage of the welding point of the ash-discharging conical hopper are avoided; the on-site environmental protection is improved, the condition of the Maerz kiln is better improved, and the productivity and the quality are improved, so that the energy waste is avoided; meanwhile, the problem is the common problem of the MailZi kiln, and the problem is solved, thereby being beneficial to the popularization and the application of the MailZi kiln in the world.

Drawings

FIG. 1 is a schematic view of a side welding structure of a tapered hopper above a conventional ash discharge plate;

FIG. 2 is a schematic top view of a side welding structure of a tapered hopper above a conventional ash discharge plate;

FIG. 3 is an enlarged view of the structure at A in FIG. 1;

FIG. 4 is a schematic side view of a cone hopper welded to the upper end of the ash discharge plate according to the present invention;

fig. 5 is an enlarged schematic view of the structure at B in fig. 4.

The reference numbers in the figures denote:

1. a kiln shell; 2. a refractory brick; 3. a steel base backing plate; 4. a welding point; 5. a conical hopper; 6. discharging the ash flat plate; 7. concrete; 8. a cement foundation; 9. pouring a material; 10. a triangular rib plate; 11. back side welding points.

Detailed Description

The invention is further illustrated with reference to the following figures and examples:

fig. 1, 2 and 3 are schematic diagrams of the ash discharge conical hopper and the accessory structure of the existing malz kiln, and in the structural design of the kiln, the top of the ash discharge conical hopper 5 above an ash discharge flat plate 6 in the kiln is connected with a steel foundation pad 3 of a refractory brick 2 supporting the malz kiln in a kiln shell 1 through welding to form a sealing structure. Because the cambered surface of welding point 4 and lime finished product material direct contact, consequently finished product lime material post is constantly from last removal in-process down the ejection of compact, produces a certain amount of wearing and tearing and because of lime finished product temperature difference to welding point 4, causes the temperature of the material that welding point 4 bore to be different, finally appears the fracture under the effect of thermal stress and produces the air leakage, influences the normal production of kiln.

The sealing device for the ash discharge conical hopper of the malz kiln of fig. 4 and 5 comprises an ash discharge conical hopper 5 arranged above an ash discharge flat plate 6, and a steel foundation pad 3 for supporting a refractory brick 2 of the kiln in a kiln shell 1; the steel foundation backing plate 3 is arranged on a cement foundation 8, and the cement foundation 8 is arranged on the concrete 7; the top of the ash discharge conical hopper 5 is raised at a vertical height above the steel foundation slab 3 by at least 5 cm, typically by 5-7 cm, as in fig. 5 d =5-7 cm; the top of the ash discharge conical hopper 5 is in this embodiment 6 cm higher in vertical height than the steel base plate 3.

Performing full-length welding on the joint of the ash-discharging conical hopper 5 and the steel foundation backing plate 3; and (3) welding triangular rib plates 10 with the thickness of 10 cm at the connecting cambered surface of the ash discharging conical hopper 5 and the steel foundation backing plate 3, wherein the interval distance between two adjacent triangular rib plates 10 is 40-50 mm. Filling and leveling the gap between the ash-discharging conical hopper 5 and the steel foundation backing plate 3 and the kiln shell 1, namely a commonly-called 'pit' foundation, by adopting a pouring material 9, and completely covering the back welding point 11 and the triangular rib plate 10 of the part; the refractory bricks 2 are laid on the hardened castable 9.