1. The utility model provides a dust collection device that high temperature calcination kiln used, includes the shell, its characterized in that: an insulating layer is arranged in the shell; the heat-insulating layer is sealed in the shell by a heat-resistant layer.

2. A dust collecting device for a high temperature calcination kiln according to claim 1, wherein: the cross section of the heat-resistant layer is a sawtooth-shaped step.

3. A dust collecting device for a high temperature calcination kiln according to claim 2, wherein: the sawtooth-shaped step comprises a dust containing surface and a transition surface; the transition surface is connected with the dust containing surface.

4. A dust collecting device for a high temperature calcination kiln according to claim 3, wherein: the dust containing surface is horizontal or inclined upwards.

5. A dust collecting device for a high temperature calcination kiln according to claim 1, wherein: and a locking device is arranged above the shell and can lock the shell and the smoke chamber outlet.

6. A dust collecting device for a high temperature calcination kiln according to claim 1, wherein: the heat-resistant layer is in locking device is in the corresponding position of shell does not set up the cockscomb structure step, the heat-resistant layer is in locking device is in the corresponding position of shell is the plane, in order to guarantee the heat-resistant layer with the shell can be in under locking device's effect connection stability.

7. A dust collecting device for a high temperature calcination kiln according to claim 1, wherein: the heat-insulating layer is made of perlite.

8. A dust collecting device for a high temperature calcination kiln according to claim 1, wherein: and a discharge hole is formed below the shell.

9. A dust collecting device for a high temperature calcination kiln according to claim 8, wherein: and a wind power conveying device is connected below the discharge port, and a powder bin is connected behind the wind power conveying device.

10. A dust collecting device for a high temperature calcination kiln according to claim 1, wherein: the shell includes No. 1 shell and No. 2 shells, No. 1 shell with No. 2 shells are connected by intermediate channel, the discharge gate is connected to the intermediate channel below.

Background

Kilns are one of the calcining apparatuses commonly used in the industry. When the kiln uses fuel to calcine materials at high temperature, some mixed dust (material dust and dust generated after fuel conversion) is generated, and the dust needs to be collected and processed, and then gas meeting the standard is discharged. At present, four-stage smoke chambers are generally adopted for collection, a No. 1 smoke chamber mainly collects sand with large particle size, No. 2 and No. 3 smoke chambers mainly collect dust, and No. 4 smoke chambers are used for final treatment. After settling in the fourth fume chamber, the vast majority of the dust settles in both the 2 and 3 fume chambers, where the dust is most generated. The dust can reach 200-300 ℃ due to high temperature, and if a conventional pipeline is adopted, the pipeline generates obvious expansion and contraction phenomena, so that the size change of the connection part of the pipeline and the smoke chamber outlet, particularly the size change in the vertical direction is caused. When the size change in the vertical direction reaches 2mm, connection unbalance is caused, and dust leaks. Therefore, the dust is transported by adopting a method of manually discharging the dust and manually transporting the dust by using a turnover bin, so that the labor amount of workers is increased, and great potential safety hazards are brought to the safety of the workers when high-temperature materials are discharged.

Disclosure of Invention

In order to solve the problems of poor economic benefit and large potential safety hazard caused by the fact that a conventional pipeline cannot be used, the invention provides the dust collecting device which has the advantages of good economic benefit and small potential safety hazard.

A dust collecting device for a high-temperature calcining kiln comprises a shell, wherein a heat insulation layer is arranged in the shell. The heat-insulating layer is sealed in the shell by a heat-resistant layer. The section of the heat-resistant layer is a sawtooth-shaped step, the sawtooth-shaped step comprises a dust containing surface and a transition surface, the dust containing surface can contain dust, and a buffer layer is formed on the dust containing surface in the falling process of part of dust; the dust containing surface is horizontal or inclined upwards; the transition surface is connected with the dust containing surface.

The buffer layer formed on the dust containing surface is characterized in that dust is reserved on the dust containing surface, so that the dust is not in direct contact with the dust containing surface in the falling process but is in contact with the dust reserved on the dust containing surface, the impact and abrasion of the dust on the heat-resistant layer are avoided, and the service life of the heat-resistant layer is prolonged.

The dust holding surface and the buffer layer also increase the contact area of the heat-resistant layer and high-temperature dust, so that the heat-resistant layer can expand towards the inside of the shell when heated to expand, and the dimensional stability in the vertical direction is ensured.

And a locking device is arranged above the shell and can lock the shell and the smoke chamber outlet.

The heat-resistant layer is in locking device is in the corresponding position of shell does not set up the cockscomb structure step, the heat-resistant layer is in locking device is in the corresponding position of shell is the plane, in order to guarantee the heat-resistant layer with the shell can be in under locking device's effect connection stability.

And a discharge hole is formed below the shell.

Preferably, the heat-insulating layer is made of perlite.

Preferably, a wind power conveying device is connected below the discharge port, and a powder bin is connected behind the wind power conveying device.

Preferably, the shell includes No. 1 shell and No. 2 shell, No. 1 shell with No. 2 shell is connected by the intermediate channel, the discharge gate is connected to the intermediate channel below.

The invention has the beneficial effects that: the economic benefit is improved, and the safety is improved.

Drawings

FIG. 1 is a schematic view of a conventional production line and collection apparatus.

Fig. 2 is a schematic structural diagram of the present invention.

FIG. 3 is an enlarged view of a heat-resistant layer according to the present invention.

In the figure: 1-locking device, 2-insulating layer, 3-heat-resistant layer, 5-1 shell, 6-wind power conveying device, 7-discharge port, 8-middle channel and 9-2 shell. 1-kiln, 20-1 smoke chamber, 30-2 smoke chamber, 40-3 smoke chamber, 50-4 smoke chamber, 60-blower, 70-manual turnover bin.

Detailed Description

In order to more clearly illustrate the present invention, the present invention is further described below with reference to the accompanying drawings.

As shown in figures 1-3, the dust generated after the kiln is calcined is discharged after being settled in a No. 1-4 smoke chamber under the action of a fan. Because No. 2 smoke chambers produce the most dust, and the temperature is high, can only adopt the manual mode with turnover storehouse to carry away the dust of No. 2 and No. 3 smoke chambers at present.

The technical scheme adopted by the invention is as follows: a dust collecting device for a high-temperature calcining kiln comprises a shell, wherein a heat-insulating layer 2 is arranged in the shell. The heat-insulating layer 2 is sealed in the shell by a heat-resistant layer 3. The section of the heat-resistant layer 3 is a sawtooth-shaped step, the sawtooth-shaped step comprises a dust containing surface 31 and a transition surface 32, the dust containing surface 31 can contain dust, and a buffer layer is formed on the dust containing surface 31 in the falling process of part of dust; the dust containing surface is horizontal or inclined upwards; the transition surface 32 is connected to the dust holding surface.

The buffer layer formed by the dust containing surface 31, namely dust is reserved on the dust containing surface 31, so that the dust is not in direct contact with the heat-resistant layer 3 in the falling process, but is in contact with the dust reserved on the dust containing surface 31, the impact and abrasion of the dust on the heat-resistant layer 3 are avoided, and the service life of the heat-resistant layer 3 is prolonged.

The dust containing surface 31 and the transition layer 32 also increase the contact area of the heat-resistant layer 3 and high-temperature dust, so that the heat-resistant layer 3 can expand towards the inside of the shell when heated and expanded, and the dimensional stability in the vertical direction is ensured.

And a locking device 1 is arranged above the shell, and the shell and the smoke chamber outlet can be locked by the locking device 1.

The heat-resistant layer 3 is in the locking device 1 is in the corresponding position of shell does not set up the cockscomb structure step, the heat-resistant layer 3 is in the locking device 1 is in the corresponding position of shell is the plane, in order to guarantee the heat-resistant layer 3 with the shell can be in under the effect of locking device 1 stable connection.

And a discharge hole 7 is formed below the shell.

Preferably, the lower part of the discharge port 7 is connected with a wind power conveying device 6, and the rear part of the wind power conveying device 6 is connected with a powder bin.

Preferably, the shell comprises a No. 1 shell 5 and a No. 2 shell 9, the No. 1 shell 5 and the No. 2 shell 9 are connected by a middle channel 8, and a discharge hole 7 is connected below the middle channel 8.

The invention not only reduces two workers for manual emptying and turnover per shift, but also eliminates the potential safety hazard brought to workers by high-temperature materials during emptying.

According to measurement and calculation, the economic benefits brought by the invention are as follows: the total annual cost saving = annual artificial wages + annual safety protection investment + turnover material cost =30 ten thousand yuan +20 ten thousand yuan =70 ten thousand yuan.