CN-224226913-U - Hanging bracket-free stone accumulation-preventing double-chamber kiln

CN224226913UCN 224226913 UCN224226913 UCN 224226913UCN-224226913-U

Abstract

The utility model relates to the field of double-hearth kilns, in particular to a hanging bracket-free stone-accumulation-preventing double-hearth kiln which comprises a hanging cavity, a cooling cavity, a calcining cavity and a preheating cavity, wherein the hanging cavity, the cooling cavity, the calcining cavity and the preheating cavity are all provided with two groups and are symmetrical in position, the hanging cavity is fixedly hung at the top of the cooling cavity, the calcining cavity is arranged at the top of the hanging cavity, the preheating cavity is arranged at the top of the calcining cavity, and the hanging bracket-free stone-accumulation-preventing double-hearth kiln comprises a cavity, a tubular hanging column and an annular hanging beam. Not only reduces the construction cost, but also effectively prevents the collapse problem caused by the complex supporting structure, and ensures the quality and the yield of lime production.

Inventors

ZHOU SHIMIN
Yue Aodi
LI LEI
Zhou Zeshuo
CHENG GUANGYANG
SUN QI
GAO YUYAO

Assignees

郑州汇实耐火材料有限公司

Dates

Publication Date: 20260512
Application Date: 20250612

Claims (10)

1. The suspended bracket stone accumulation-preventing double-hearth kiln is characterized by comprising a suspended cavity, a cooling cavity, a calcining cavity and a preheating cavity, wherein the suspended cavity, the cooling cavity, the calcining cavity and the preheating cavity are all provided with two groups and are symmetrical in position, the suspended cavity is fixedly suspended at the top of the inner cavity of the cooling cavity, the calcining cavity is arranged at the top of the suspended cavity, and the preheating cavity is arranged at the top of the calcining cavity; The hanging type cavity comprises a cavity body, tubular hanging columns and annular hanging beams, wherein the tubular hanging columns are arranged inside the side wall of the cavity body in a dispersing mode, the annular hanging beams are located at the bottom of the hanging type cavity, the top ends of the tubular hanging columns penetrate through the top of the side wall of the cavity body, and the cavity body is integrally anchored at the middle position of the top of the cooling cavity through the tubular hanging columns.
2. The hanging bracket stone-accumulation-preventing double-hearth kiln of claim 1, wherein an annular circulating pipeline is embedded in the annular hanging beam, the bottom end of the tubular hanging column is communicated with and fixedly connected with the annular circulating pipeline, and the top end of the tubular hanging column penetrates through the side wall of the cavity and the top of the cooling cavity and is fixed at the top of the cooling cavity through pouring and/or welding; The top of the annular hanging beam is matched with the specification of the bottom of the cavity, and the annular hanging beam is fixedly arranged at the bottom of the cavity and lifts the cavity.
3. The hanging bracket-free stone accumulation prevention double-hearth kiln as set forth in claim 2, wherein the cavity is generally built by mortise and tenon I-shaped bricks, a gap for installing a tubular hanging column is reserved at a position corresponding to the tubular hanging column on the cavity, and the tubular hanging column is connected with the cavity main body through pouring and anchoring; The cavity is matched with the annular hanging beam through a tubular hanging column, and is fixedly hung at the middle position of the top of the cooling cavity.
4. The hanging bracket stone-accumulation-preventing double-hearth kiln of claim 3, wherein the cooling cavity comprises a cooling main cavity and an annular channel, the annular channel is arranged at the top of the cooling main cavity, and the hanging bracket cavity is arranged in the middle of the annular channel in a sinking manner; The annular channel is provided with a plurality of ash removal holes, and the top of each ash removal hole is provided with a sealing cover.
5. The hanging bracket stone-accumulation-preventing double-hearth kiln of claim 4, wherein refractory linings are paved on the inner walls of the calcining cavity and the preheating cavity, the calcining cavity is fixedly arranged at the top of the hanging type cavity, the preheating cavity is fixedly arranged at the top of the calcining cavity, and the top of the preheating cavity is provided with a furnace top.
6. The hanging bracket stone-accumulation-preventing double-hearth kiln of claim 4, wherein stone-accumulation-preventing partition walls are built at the tops of the joint of the cavity walls of the symmetrically arranged cooling cavities and the cavity wall of the other cooling cavity, and connecting channels are reserved above the stone-accumulation-preventing partition walls; The cooling air pipe is communicated to the inside of the cooling main cavity, a double-layer hood is arranged at the end of the cooling air pipe, and the double-layer hood is arranged at the middle position of the bottom of the cooling main cavity.
7. The hanging bracket-free stone-accumulation-preventing double-hearth kiln as claimed in claim 2, wherein the tubular hanging columns are high-strength hollow pipes, twelve tubular hanging columns are arranged, six tubular hanging columns are air inlet pipelines, six tubular hanging columns are air outlet pipelines, and the air inlet pipelines and the air outlet pipelines are arranged in a staggered manner; the bottom of the tubular hanging column is all connected with the annular circulating pipeline in a penetrating way through a three-way joint.
8. The hanging bracket stone-accumulation-preventing double-hearth kiln of claim 7, wherein a plurality of anchoring elements are evenly distributed on the annular circulating pipeline outside the tubular hanging post.
9. The hanging bracket-free stone-accumulation-preventing double-hearth kiln as set forth in claim 8, wherein the front ends of the anchoring elements are arranged in a crotch-like and dispersed manner, and the anchoring elements on the tubular hanging columns are arranged in an alternating manner along the up-down direction.
10. The hanging bracket stone-accumulation-preventing double-hearth kiln of claim 5, wherein the cooling main cavity is built by stacking wear-resistant high-quality refractory bricks, the refractory lining paved on the inner wall of the calcining cavity is composite brown corundum refractory bricks, the refractory lining paved on the inner wall of the preheating cavity is high-strength and anti-scouring refractory bricks, and the annular hanging beam is formed by casting baking-free high-strength and anti-scouring castable.

Description

Hanging bracket-free stone accumulation-preventing double-chamber kiln Technical Field The utility model belongs to the field of double-hearth kilns, and particularly relates to a hanging bracket-free stone accumulation-preventing double-hearth kiln. Background The double-hearth kiln is also called as a double-hearth parallel-flow heat accumulating lime kiln, fuel is fed from the upper end of the calcining zone and flows in parallel with the raw materials, the raw materials can absorb most of heat released by the fuel at the upper part of the calcining zone, the temperature of the calcining zone is 950 ℃ on average, the other important characteristic of the double-hearth kiln is heat accumulation, a part of combustion air is preheated by utilizing the heat accumulation, and the thermal characteristics of parallel-flow calcining and countercurrent heat accumulation determine that the double-hearth kiln has high heat efficiency, and the heat energy consumption of the double-hearth kiln is lower in all types of lime kilns such as rotary kilns, sleeve kilns and the like. In the prior art, a complex supporting structure is generally required for maintaining the stability and the safety of each functional chamber in the conventional double-chamber kiln, the construction cost is increased, brackets for supporting the inner cylinder body are easy to damage in the using process, the inner cylinder is easy to collapse, the inner cylinder and the brackets collapse, and the firing quality and the yield of lime are affected, so that how to overcome the technical problems and the defects are important to solve. Disclosure of utility model The utility model aims to overcome the defects described in the background art, thereby realizing the suspended bracket-free stone accumulation-preventing double-hearth kiln and solving the problems that the cost is high, the supporting bracket is easy to collapse, the lime production quality and yield are influenced and the like when a complex supporting structure is built in the prior art. The hanging bracket stone accumulation-preventing double-chamber kiln comprises a hanging chamber, a cooling chamber, a calcining chamber and a preheating chamber, wherein the hanging chamber, the cooling chamber, the calcining chamber and the preheating chamber are all provided with two groups and are symmetrical in position, the hanging chamber is fixedly hung at the top of the inner chamber of the cooling chamber, the calcining chamber is arranged at the top of the hanging chamber, and the preheating chamber is arranged at the top of the calcining chamber. Specifically, hang the chamber and include cavity, tubular hanging column and annular hanging beam, tubular hanging column dispersion set up in inside the cavity lateral wall, annular hanging beam is located hang the chamber bottom, tubular hanging column top runs through cavity lateral wall top, just the cavity passes through tubular hanging column monolithic anchorage is in cooling chamber top intermediate position. In the hanging bracket-free stone accumulation prevention double-hearth kiln, an annular circulating pipeline is embedded in the annular hanging beam, the bottom end of the tubular hanging column is communicated with and fixedly connected with the annular circulating pipeline, and the top end of the tubular hanging column is fixed at the top of the cooling cavity through pouring and/or welding after penetrating through the side wall of the cavity and the top of the cooling cavity. Specifically, the annular hanging beam top with cavity bottom specification adaptation, annular hanging beam fixed set up in the cavity bottom and lift the cavity. In the hanging bracket-free stone accumulation prevention double-hearth kiln, the cavity is generally built through mortise and tenon I-shaped bricks, a gap for installing a tubular hanging column is reserved at the position, corresponding to the tubular hanging column, of the cavity, and the tubular hanging column is connected with the cavity main body through pouring and anchoring. Furthermore, the cavity is matched with the annular hanging beam through a tubular hanging column, and is fixedly hung at the middle position of the top of the cooling cavity. In the hanging bracket-free stone accumulation preventing double-chamber kiln, the cooling cavity comprises a cooling main cavity and an annular channel, the annular channel is arranged at the top of the cooling main cavity, and the hanging bracket-free stone accumulation preventing double-chamber kiln is arranged in the middle of the annular channel in a sinking mode. Preferably, a plurality of ash cleaning holes are formed in the annular channel, and a sealing cover is arranged at the top of each ash cleaning hole. In the hanging bracket-free stone accumulation prevention double-hearth kiln, refractory linings are paved on the inner walls of the calcining cavity and the preheating cavity, the calcining cavity is fixedly arranged at the top