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CN-122015484-A - Circulating reciprocating type high-efficiency energy-saving tunnel kiln

CN122015484ACN 122015484 ACN122015484 ACN 122015484ACN-122015484-A

Abstract

The invention discloses a circulating reciprocating type efficient energy-saving tunnel kiln, which relates to the technical field of industrial kiln equipment, and in particular relates to a circulating reciprocating type efficient energy-saving tunnel kiln. The end face of the frame is provided with slow cooling, quenching, heating and preheating smoke ports, and a flue is arranged in the kiln wall and is communicated with the heat exchange channels of the smoke ports and the burner. The lifting trolley can be circularly lifted, moved forward, lowered and returned, the carrying Gao Wenliang column supports the energy-saving frame, and different smoke ports correspond to the trolleys with different structures. A closed partition is arranged between the quenching section and the heating section, and only a cooling air channel is reserved in the quenching section. The junction of the trolley and the kiln wall is sealed in a seamless way, and a sealing device is added at part of the flue opening. The energy-saving frame consists of a cross beam, a longitudinal beam, a sleeve seat and the like, and the upright posts penetrate through the strip and put the silicon plate to bear products. The frame is provided with a circulating lane, and the frame is transported by a consignment device.

Inventors

  • LI HUA

Assignees

  • 李华

Dates

Publication Date
20260512
Application Date
20260306

Claims (10)

  1. 1. The circulating reciprocating type efficient energy-saving tunnel kiln comprises a frame (1) and is characterized in that a multifunctional combustor (2) is arranged at the outer end of the frame (1), a lifter (3) is arranged on the inner side of the frame (1), a lifting trolley (4) is arranged at the upper end of the lifter (3), and an energy-saving frame (5) is arranged at the upper end of the lifting trolley (4).
  2. 2. The circulating reciprocating type efficient energy-saving tunnel kiln of claim 1, wherein a slow cooling section smoke port (6) is formed in the end face of the frame (1), a rapid cooling section smoke port (7) is formed in the end face of the frame (1), a heating section smoke port (8) is formed in the end face of the frame (1), and a preheating section smoke port (9) is formed in the end face of the frame (1).
  3. 3. The cyclic reciprocating type efficient energy-saving tunnel kiln as claimed in claim 1, wherein the lifting trolley (4) is provided with a height Wen Liangzhu capable of supporting the energy-saving frame (5), and the lifting trolley (4) can complete cyclic actions of lifting, advancing, descending and returning.
  4. 4. The circulating reciprocating type efficient energy-saving tunnel kiln as claimed in claim 1, wherein a special flue is reserved in the kiln wall of the frame (1), and the flue can be communicated with heat exchange channels of the slow cooling section flue opening (6), the rapid cooling section flue opening (7), the heating section flue opening (8) and the preheating section flue opening (9) and the multifunctional burner (2).
  5. 5. The cyclic reciprocating type efficient energy-saving tunnel kiln as claimed in claim 1, wherein the lifting trolley (4) with different structures is respectively configured at the positions of the frame (1) corresponding to the slow cooling section smoke port (6), the rapid cooling section smoke port (7), the heating section smoke port (8) and the preheating section smoke port (9).
  6. 6. The circulating reciprocating type efficient energy-saving tunnel kiln as claimed in claim 1, wherein a totally-enclosed partition structure is arranged between a quench section flue opening (7) and a heating section flue opening (8) of the frame (1), and only a special channel for cooling air injection is reserved in the quench section.
  7. 7. The circulating reciprocating type efficient energy-saving tunnel kiln as claimed in claim 1, wherein a seamless sealing structure is adopted at the joint of the lifting trolley (4) and the kiln wall of the frame (1), and sealing devices are additionally arranged at the smoke port (8) of the heating section and the smoke port (9) of the preheating section.
  8. 8. The circulating reciprocating type efficient energy-saving tunnel kiln as claimed in claim 1, wherein the energy-saving frame (5) comprises a base formed by a bottom cross beam and a hollow longitudinal beam, and a sleeve seat for inserting an upright post is arranged on the base cross beam.
  9. 9. The circulating reciprocating type efficient energy-saving tunnel kiln as claimed in claim 1, wherein penetrating strips are penetrated on the upright posts of the energy-saving frame (5), and silicon plates for bearing products to be sintered are placed on the penetrating strips.
  10. 10. The circulating reciprocating type efficient energy-saving tunnel kiln according to claim 1, wherein a circulating lane is arranged outside the frame (1), and the circulating lane realizes the transportation of the energy-saving frame (5) between an inner lane and an outer lane through a front and rear delivery device.

Description

Circulating reciprocating type high-efficiency energy-saving tunnel kiln Technical Field The invention relates to the technical field of industrial kiln equipment, in particular to a circulating reciprocating type efficient energy-saving tunnel kiln. Background The tunnel kiln is used as a continuous high-temperature sintering device and is widely applied to the production of ceramics, refractory materials, electroceramics, abrasive materials and partial special glass products. The traditional tunnel kiln generally adopts a fixed kiln car to run along a track in the kiln in one way, enters from a preheating section, is heated to a firing temperature through a heating section, and is cooled through a quenching section and a slow cooling section to push out a finished product. The device has the advantages of realizing continuous production, being suitable for large-batch stable operation, along with obvious defects, namely longer kiln body length, limited space utilization rate in the kiln, insufficient heat energy utilization, and particularly direct discharge of a large amount of waste heat in a cooling section, thereby causing energy waste. In addition, the traditional kiln car has heavy structure, more heat loss exists in the kiln inlet and outlet process, and poor sealing performance between the kiln car and the kiln wall is easy to cause short circuit of air flow in the kiln or uneven temperature distribution, and the quality stability of products is affected. Under the background that energy conservation and consumption reduction are becoming the core requirements of industrial production increasingly, various improvement measures are tried in the industry. For example, some designs introduce the cooling section waste heat into the preheating section or the drying section to recover part of the heat through heat exchange, some designs use light heat-insulating materials to reduce kiln body heat dissipation, and other designs optimize the combustion system to improve combustion efficiency and reduce flue gas emission temperature. However, most of these measures are limited to local improvement of the existing kiln body structure, and cannot fundamentally change the modes of unidirectional propulsion of kiln cars and static use of space in the kiln, so that the waste heat recovery path is single, the functions of each section of the kiln body are relatively split, and a closed-loop heat energy recycling system is difficult to form. On the other hand, kiln cars of the traditional tunnel kiln need to occupy the space outside the kiln in a reciprocating way, and products are loaded and unloaded by manual or semi-mechanized operation, so that the production efficiency is limited by the turnover speed of the kiln cars. The kiln car frequently enters and exits in a high-temperature area and a low-temperature area, and the heat absorption and the heat dissipation of the car body are repeatedly carried out, so that the energy consumption is increased, and the temperature fluctuation in the kiln is easily caused. For the firing process requiring accurate temperature control, the fluctuation can reduce the product percent of pass and increase the defective rate. In recent years, some enterprises explore the concept of "movable kiln chambers" or "modular kiln bodies" in an attempt to recycle the frames carrying the blanks inside and outside the kiln to reduce heat loss from repeated ingress and egress of kiln cars. However, such schemes tend to have complex structures, insufficient sealing and movement reliability, and difficulty in ensuring air flow isolation and directional heat transfer during multi-section temperature interval switching, resulting in limited practical energy-saving effects. In addition, the requirements of different firing stages on cooling modes and air flow structures are obviously different, for example, a quenching section needs high-speed cold air to be rapidly cooled to fix a crystal structure, a preheating section needs slow and uniform heating to avoid blank cracking, and the traditional kiln body is difficult to simultaneously meet multi-section differential working conditions in the same space without mutual interference. Therefore, a novel tunnel kiln structure which can not only maintain continuous production efficiency, but also remarkably improve heat energy utilization rate and realize dynamic multiplexing of space in the kiln and multi-section independent temperature control is needed. Disclosure of Invention The invention aims to provide a circulating reciprocating type efficient energy-saving tunnel kiln, which optimizes the heat recycling path in the kiln by matching the circulating action of a lifting trolley with the design of a segmented flue and a special lifting trolley, combines a seamless sealing and independent cooling channel structure, reduces heat loss, improves the energy utilization rate, solves the problems of high energy consumption and low heat efficiency of