CN212692484U

CN212692484U - Novel kiln inlet structure

Info

Publication number: CN212692484U
Application number: CN202021124121.4U
Authority: CN
Inventors: 孙卫明
Original assignee: Suzhou Yunqigu Intelligent System Equipment Co ltd
Current assignee: Suzhou Yunqigu Intelligent System Equipment Co ltd
Priority date: 2020-06-17
Filing date: 2020-06-17
Publication date: 2021-03-12
Anticipated expiration: 2030-06-17

Abstract

The utility model discloses a novel kiln inlet structure contains that the bottom admits air and the side admits air, and it is installed in the furnace body the inside of furnace body is installed many horizontally roller stick side by side, each be provided with multiseriate saggar on the roller stick, the inside bottom of furnace body is equipped with a plurality of bottom inlet ports, each the bottom inlet port respectively with a plurality of the bottom preheats the chamber and is linked together, each the bottom preheats the chamber and is linked together with the bottom intake pipe. The utility model provides a novel bottom of kiln admits air and side inlet structure sets up independent adjustable bottom inlet port and super large preheating chamber through the bottom at the kiln, sets up S type and admits air preheating route and independent external heating device etc. in the kiln side, can squeeze into gas more steadily, improves heat utilization, reduces the difference in temperature in the gas and the stove of admitting air, makes the temperature in the stove more even, has improved the quality of sintering, simultaneously energy-conserving a large amount of energy consumptions.

Description

Novel kiln inlet structure

Technical Field

The utility model relates to a kiln technical field, in particular to novel kiln inlet structure.

Background

A kiln, such as a roller kiln, is a common apparatus for firing corresponding products at a high temperature, and drives the products through a plurality of rollers arranged in parallel, while heating devices are arranged around the products to fire the moving products. When the roller kiln is used for firing products, the products are generally placed in the saggars, the saggars are placed on the roller rods for transmission, and in order to improve the efficiency of the roller kiln, a plurality of saggars are often arranged in the roller kiln into a plurality of layers and a plurality of columns and are used for bearing and placing a plurality of products, so that the products can be fired simultaneously.

In the kiln, since the product needs to be sintered under a certain atmosphere (such as oxygen or nitrogen), some substances which are easy to react with the product are generated during the sintering process, and need to be discharged in time, and after the discharge, in order to maintain the atmosphere in the kiln, the gas needs to be continuously introduced. Generally, a plurality of air inlets are arranged at the bottom of the kiln, air is supplied through the air inlets by using equipment such as a blower, an air pipe and the like, and air is exhausted through an air outlet arranged at the top of the kiln. The air inlet holes of the existing kiln are generally circular holes, the diameter size of the air inlet holes is not large, the heat utilization rate in the kiln is easily influenced, the temperature at each position in the kiln is not uniform, the temperature difference is large, and the sintering quality is reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a novel kiln inlet structure.

According to the utility model discloses an aspect provides a novel kiln inlet structure installs in the furnace body the inside of furnace body is installed many horizontally roller stick side by side, each be provided with multiseriate saggar on the roller stick, the inside bottom of furnace body is equipped with a plurality of bottom inlet ports, each the bottom inlet port respectively with a plurality of the bottom preheats the chamber and is linked together, each the bottom preheats the chamber and is linked together with the bottom intake pipe.

The utility model provides a novel bottom of kiln admits air and side inlet structure sets up independent adjustable bottom inlet port and super large preheating chamber through the bottom at the kiln, sets up S type and admits air preheating route and independent external heating device etc. in the kiln side, can squeeze into gas more steadily, improves heat utilization, reduces the difference in temperature in the gas and the stove of admitting air, makes the temperature in the stove more even, has improved the quality of sintering, simultaneously energy-conserving a large amount of energy consumptions.

In some embodiments, the furnace body is provided with side air inlets on both sides, the side air inlets on each side are communicated with a side preheating chamber, and the side preheating chamber is communicated with a side air inlet pipe. Therefore, air can be fed from the side surface of the furnace body through the side surface air inlet hole, the side surface preheating cavity and the side surface air inlet pipe, and the air feeding efficiency is guaranteed.

In some embodiments, a flow meter is mounted on each of the bottom intake pipe and the side intake pipe. Thus, the bottom and side air intake conditions can be measured in real time by arranging the flow meter, wherein the flow meter is preferably a glass rotameter.

In some embodiments, a separate preheating device is mounted on the side inlet pipe. Therefore, the side inlet air can be preheated through the independent preheating device, and the efficiency of sintering work is improved.

In some embodiments, the bottom preheating chamber and/or the side preheating chambers are S-shaped. Therefore, the S-shaped preheating cavities can increase the passing time of the gas, so that the gas can be fully preheated.

In some embodiments, the aperture of the bottom air inlet hole and the aperture of the side air inlet hole are both 20mm, and the volume of the bottom preheating chamber is 48,000,000mm³Each of the side preheating chambers has a volume of 5,760,000 mm³. Therefore, specific sizes of the bottom air inlet hole, the side air inlet hole, the bottom preheating cavity, the side preheating cavity and the like are set.

In some embodiments, the top of the furnace body is provided with a top vent. Thereby, the air can be exhausted from the top through the top exhaust hole.

In some embodiments, the bottom of the furnace body is provided with a bottom vent. Thereby, the air can be exhausted from the bottom through the bottom exhaust hole.

Drawings

Fig. 1 is a schematic cross-sectional structural view of a novel kiln air inlet structure according to an embodiment of the present invention when the novel kiln air inlet structure is installed on a kiln;

FIG. 2 is a schematic view of an internal front cross-sectional structure of the cross-sectional structure of FIG. 1;

FIG. 3 is a schematic view of an internal side cross-sectional configuration of the cross-sectional configuration shown in FIG. 1;

FIG. 4 is a schematic side cross-sectional view of another embodiment of the interior of the cross-sectional configuration shown in FIG. 1.

In the figure: the device comprises a furnace body 1, a roller 2, a saggar 3, a bottom air inlet 6, a bottom preheating cavity 7, a bottom air inlet pipe 8, a side air inlet 9, a side preheating cavity 10, a side air inlet pipe 11, a flowmeter 12, an independent preheating device 13, a top exhaust hole 14 and a bottom exhaust hole 15.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 schematically shows a cross-sectional structure of a novel kiln inlet structure according to an embodiment of the present invention when installed on a kiln, fig. 2 shows an internal front sectional structure of the cross-sectional structure of fig. 1, and fig. 3 shows an internal side sectional structure of the cross-sectional structure of fig. 1. As shown in fig. 1-3, the air inlet structure is installed in the furnace body 1 of the roller kiln. Wherein, install many can pivoted roller stick 2 side by side in furnace body 1, and be provided with a plurality of saggars 3 that are used for holding the product on roller stick 2, saggars 3 can remove along with the rotation of each roller stick 2, and at the in-process that removes, the product in the saggars 3 can be fired through the heating of roller kilns, then transports from the exit in export replacement storehouse.

In the internal structure of the furnace body 1, a layer of refractory bricks and a plurality of layers of cotton plates are sequentially arranged from inside to outside, and the refractory bricks are laid on the inner layer of each cotton plate. Wherein, firebricks and each cotton board are laid around furnace body 1, including the top of arch, vertical both sides and horizontal bottom.

A plurality of bottom air inlets 6 (the attached drawing is a cross section and only one row is shown) which are arranged in a plurality of rows are arranged on the refractory bricks at the bottom end of the furnace body 1, and the bottoms of the bottom air inlets 6 are respectively communicated with a plurality of wider bottom preheating cavities 7. The bottom of each bottom preheating cavity 7 is communicated with one end of a bottom air inlet pipe 8, and the other end of the bottom air inlet pipe 8 can extend out of the furnace body 1 and is connected with air supply equipment so as to introduce oxygen or nitrogen and other gases into the furnace body 1 to form atmosphere. Preferably, the number of bottom air inlet holes 6 per row corresponds to the number of saggars in a row, and the orientation of the saggars is approximately corresponding. For example, in the cross-sectional view, the bottom inlets 6 of the saggars in the 1 st and 4 th rows and the saggars in the 2 nd and 3 rd rows can be finely adjusted or independently opened and closed through the valves arranged on the external pipelines, and the inlets at the side inlets 10 can be finely adjusted or independently opened and closed through the valves arranged on the external pipelines. So as to ensure that the temperature distribution in the furnace is not uniform due to the non-uniform air input, improve the temperature distribution in the furnace and improve the sintering quality.

The middle parts of the two sides of the furnace body 1 are provided with a row of side air inlets 9 (the attached drawing is a sectional view, only one of which is shown), so that air can be fed from the two sides of the furnace body 1, and the air feeding efficiency is ensured. The lateral air inlet 9 on each side is communicated with a wider lateral preheating chamber 10, the lateral preheating chamber 10 is communicated with one end of a lateral air inlet pipe 11, and the other end of the lateral air inlet pipe 11 can extend out of the furnace body 1 and is connected with air supply equipment.

Preferably, a flow meter 12 is installed on each of the bottom intake pipe 8 and the side intake pipe 11 to measure the intake air in real time. Flow meter 12 is typically selected to be a glass rotameter 12 and is mounted in a position near above for ease of viewing.

Preferably, an independent preheating device 13 is further installed on the side gas inlet pipe 11, and the gas entering from the side can be preheated, so that the gas can quickly meet the requirement of the firing work after being introduced. Among them, it can be preheated to 300 ℃ at most.

Preferably, the hole diameters of the bottom air inlet hole 6 and the side air inlet hole 9 are both 20mm, and the volume of the bottom preheating cavity 7 is 48,000,000mm³The gas flow rate is generally not more than 0.2m/s per second, and the preheating time is generally more than 4 s; while the volume of the lateral preheating chamber 10 is 5,760,000 mm³The gas flow rate is generally not greater than 1.6m/s per second, and the preheating time is generally above 2 s.

Further preferably, the bottom preheating chamber 7 and/or the side preheating chamber 10 may be provided in an S-shaped bent structure. Preferably, the S-shaped structure is not a simple one-time bending structure, but is formed by a plurality of bending structures which can be bent in different directions, and the bending structures can increase the passing time of the gas so as to fully preheat the gas.

In addition, at least one top exhaust hole 14 is arranged at the top of the furnace body 1, and the exhaust can be carried out from the furnace body 1 through the top exhaust hole 14 so as to ensure the smooth air flow in the furnace body 1. Preferably, the top vent hole 14 may have a curved shape such as a long strip shape or an S-shape.

Fig. 4 shows a side sectional structure of another embodiment of the internal structure of the sectional structure in fig. 1. As shown in fig. 4, if necessary, a certain bottom vent hole 15 may be provided in the bottom of the furnace body, and the gas can be exhausted from the bottom of the furnace body 1 through the bottom vent hole 15.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. The utility model provides a novel kiln inlet structure installs in furnace body (1) the inside of furnace body (1) is installed many horizontally roller stick (2) side by side, each be provided with multiseriate sagger (3), its characterized in that on roller stick (2): the bottom end in the furnace body (1) is provided with a plurality of bottom air inlets (6), each bottom air inlet (6) is respectively communicated with a plurality of bottom preheating cavities (7), and each bottom preheating cavity (7) is communicated with a bottom air inlet pipe (8).

2. The novel kiln air inlet structure as claimed in claim 1, characterized in that: the side preheating device is characterized in that side air inlets (9) are formed in the two sides of the furnace body (1), the side air inlets (9) on each side are communicated with a side preheating cavity (10), and the side preheating cavity (10) is communicated with a side air inlet pipe (11).

3. The novel kiln air inlet structure as claimed in claim 2, characterized in that: and the bottom air inlet pipe (8) and the side air inlet pipe (11) are both provided with a flowmeter (12).

4. The novel kiln air inlet structure as claimed in claim 2, characterized in that: and an independent preheating device (13) is arranged on the side air inlet pipe (11).

5. The novel kiln air inlet structure as claimed in claim 2, characterized in that: the bottom preheating chamber (7) and/or the side preheating chamber (10) are S-shaped.

6. The novel kiln air inlet structure as claimed in claim 2, characterized in that: the aperture of the bottom air inlet hole (6) and the aperture of the side air inlet hole (9) are both 20mm, and the volume of the bottom preheating cavity (7) is 48,000,000mm³Each of said lateral preheating chambers (10) having a volume of 5,760,000 mm³。

7. The novel kiln inlet structure as claimed in any one of claims 1 to 6, characterized in that: the top of the furnace body (1) is provided with a top exhaust hole (14).

8. The novel kiln inlet structure as claimed in claim 7, characterized in that: the bottom of the furnace body (1) is provided with a bottom exhaust hole (15).