CN210511691U

CN210511691U - Multi-section furnace hearth

Info

Publication number: CN210511691U
Application number: CN201921754537.1U
Authority: CN
Inventors: 丁治椿; 仲文; 居欣美
Original assignee: Wuxi Qiaofa Petrochemical Equipment Co Ltd
Current assignee: Wuxi Qiaofa Petrochemical Equipment Co Ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-05-12
Anticipated expiration: 2029-10-18

Abstract

The utility model relates to a multi-section furnace hearth, which comprises a shell, wherein the shell is cylindrical, the top of the shell is provided with a feed inlet, the bottom of the shell is provided with a discharge outlet, a plurality of layers of bed plates are arranged in the shell, the bed plates are arranged along a spiral shape from the top to the bottom of the shell, a splayed included angle is formed between two adjacent bed plates, the upper part of each bed plate is a material receiving section, the lower part of each bed plate is a material sending-out section, and the adjacent material sending-out sections and the material receiving sections are oppositely arranged in the vertical direction; the inner wall of the shell is provided with a plurality of material pushing mechanisms right facing the bed board, each material pushing mechanism comprises a driving unit, a telescopic arm connected with the driving unit and rake teeth connected with the telescopic arm, the telescopic arm is parallel to the bed board, and the driving unit drives the rake teeth to move back and forth along the direction from the material receiving end to the material sending section.

Description

Multi-section furnace hearth

Technical Field

The utility model relates to a hearth especially relates to a multistage furnace hearth.

Background

The multi-stage furnace is also called multi-chamber furnace or mechanical furnace, and is a multi-chamber incinerator with mechanical transmission device. The multi-stage furnace is characterized in that the retention time of the waste in the furnace is long, more water can be volatilized, the multi-stage furnace is suitable for treating sludge with high water content and low heat value, various fuels can be used, the combustion efficiency is higher, and any layer of fuel combustor can be utilized to improve the temperature in the furnace. At present, in the feeding process of a multi-stage furnace, materials are supplied from the top of the furnace, on a bed plate of a first-layer furnace, the materials are moved to the center under the stirring action of rake arms and rake teeth, and fall onto a second-layer furnace bed plate from an opening in the center, the direction of the second-layer stirring teeth is opposite to that of the first layer, the materials are pushed to the outer edge and fall onto a third-layer bed plate, the processes are repeated until reaching a bottom-layer furnace bed plate, and finally the materials are discharged from a bottom discharging device to obtain a product. Above-mentioned structural arrangement, rake teeth, rake arm atress are great, easily lead to the material card between rake teeth, rake arm and bed board, easily appear mechanical transmission part malfunctioning, maintenance inconvenient scheduling problem.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims at providing a multistage furnace hearth, the utility model discloses a bed board structure sets up, utilizes mechanical promotion and action of gravity to realize the removal of material in the hearth, has alleviateed material pushing mechanism's atress.

The utility model discloses a multi-section furnace hearth, which comprises a shell, wherein the shell is cylindrical, the top of the shell is provided with a feed inlet, the bottom of the shell is provided with a discharge outlet, a plurality of layers of bed plates are arranged in the shell, the bed plates are arranged along a spiral shape from the top to the bottom of the shell, a splayed included angle is formed between two adjacent bed plates, the upper part of each bed plate is a material receiving section, the lower part of each bed plate is a material sending-out section, and the adjacent material sending-out sections and the material receiving sections are oppositely arranged in the vertical direction; the inner wall of the shell is provided with a plurality of material pushing mechanisms right facing the bed board, each material pushing mechanism comprises a driving unit, a telescopic arm connected with the driving unit and rake teeth connected with the telescopic arm, the telescopic arm and the bed board are arranged in parallel, and the driving unit drives the rake teeth to move back and forth along the direction from the material receiving section to the material sending section.

Furthermore, the bed board is laid on the refractory material.

Furthermore, an anti-sticking layer for preventing materials from being stuck on the bed board is laid on the upper surface of the bed board.

Further, the anti-sticking layer is a quartz sand layer.

Furthermore, the shell is provided with a steel outer wall, the inner wall of the shell is provided with a heat insulation layer, and the inner wall of the heat insulation layer is provided with a refractory brick lining layer.

Further, the refractory brick lining is provided with an expansion joint along the axial direction of the shell.

Furthermore, the included angle between two adjacent bed boards is 5-20 degrees.

Further, the bottom of bed board is equipped with the supporting part, the upper surface of supporting part is inconsistent with the lower surface of bed board, the lower surface level of supporting part sets up.

Further, the bottom of the housing is tapered.

Further, the shell is provided with a smoke outlet.

Borrow by above-mentioned scheme, the utility model discloses at least, have following advantage:

the utility model discloses a bed board is arranged along the spiral, constitutes the contained angle that is the splayed between the two adjacent bed boards, and the upper portion of bed board is the material receiving section, and the lower part is the material delivery section, and adjacent material delivery section sets up relatively in vertical direction with the material receiving section, and cooperation material pushing mechanism's promotion can guarantee like this that the material relies on pushing mechanism's drive force and gravity whereabouts on the hearth, guarantees the even landing of material, has alleviateed pushing mechanism's mechanical burden.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.

Drawings

FIG. 1 is a schematic structural view of a multi-stage hearth according to the present invention;

FIG. 2 is a schematic view of the inner wall structure of the refractory brick lining;

description of reference numerals:

1-steel outer wall, 2-heat insulation layer, 3-refractory brick lining, 4-smoke outlet, 5-telescopic arm, 6-rake teeth, 7-anti-sticking layer, 8-bed board, 9-refractory material and 10-supporting part; 11-expansion joints.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Examples

Referring to the drawings, a preferred embodiment of the present invention is a multiple zone hearth furnace comprising a housing, the housing being substantially cylindrical and the bottom of the housing being tapered. The upper part of the shell is also provided with a smoke outlet 4. The shell is provided with a steel outer wall 1, the inner wall of the shell is provided with a heat preservation layer 2, and the inner wall of the heat preservation layer 2 is provided with a refractory brick lining layer 3. The refractory brick lining 3 is provided with expansion joints 11 in the axial direction of the shell. The arrangement of the expansion joint 11 can provide buffer for expansion and contraction of the refractory brick lining 3 under the heating or cooling state, and the service life of the shell is prolonged. The top of the shell is provided with a feed inlet, and the bottom of the shell is provided with a discharge outlet.

A plurality of layers of bed boards 8 are arranged in the shell, and the bed boards 8 are laid on the refractory materials 9. The upper surface of the bed plate 8 is paved with an anti-sticking layer 7 which prevents materials from being stuck on the bed plate 8. The release layer 7 is preferably a quartz sand layer. The quartz sand layer consists of a plurality of quartz sand particles, and the particle size of the quartz sand particles is 10-50 mu m.

The bottom of bed board 8 is equipped with supporting part 10, and the upper surface of supporting part 10 is supported and is inconsistent with the lower surface of bed board 8, and the lower surface level of supporting part 10 sets up. Thus improving the stability of the bed plate 8.

From the top to the bottom of the shell, the bed boards 8 are arranged spirally, a splayed included angle is formed between two adjacent bed boards 8, and the included angle between the two adjacent bed boards 8 is 5-20 degrees. The upper part of the bed plate 8 is a material receiving section, the lower part is a material sending-out section, and the adjacent material sending-out section and the material receiving section are arranged oppositely in the vertical direction. The inner wall of the shell is provided with a plurality of material pushing mechanisms right facing the bed plate 8, each material pushing mechanism comprises a driving unit, a telescopic arm 5 connected with the driving unit and rake teeth 6 connected with the telescopic arm 5, the telescopic arms 5 and the bed plate 8 are arranged in parallel, and the telescopic arms 5 of the driving unit drive the rake teeth 6 to move back and forth along the direction from the material receiving section to the material sending section.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a multistage furnace hearth, includes the casing, the casing is cylindrically, the casing top is equipped with the feed inlet, and the bottom is equipped with the discharge gate, be equipped with a plurality of layers of bed board in the casing, its characterized in that: the bed plates are spirally arranged from the top to the bottom of the shell, a splayed included angle is formed between two adjacent bed plates, the upper parts of the bed plates are material receiving sections, the lower parts of the bed plates are material sending sections, and the adjacent material sending sections and the material receiving sections are arranged oppositely in the vertical direction; the inner wall of the shell is provided with a plurality of material pushing mechanisms right facing the bed board, each material pushing mechanism comprises a driving unit, a telescopic arm connected with the driving unit and rake teeth connected with the telescopic arm, the telescopic arm and the bed board are arranged in parallel, and the driving unit drives the rake teeth to move back and forth along the direction from the material receiving section to the material sending section.

2. The multi-stage furnace hearth of claim 1, wherein: the bed board is laid on the refractory material.

3. The multi-stage furnace hearth of claim 1, wherein: the anti-sticking layer for preventing materials from being stuck on the bed plate is laid on the upper surface of the bed plate.

4. The multi-stage furnace hearth of claim 3, wherein: the anti-sticking layer is a quartz sand layer.

5. The multi-stage furnace hearth of claim 1, wherein: the shell is provided with a steel outer wall, the inner wall of the shell is provided with a heat insulation layer, and the inner wall of the heat insulation layer is provided with a refractory brick lining layer.

6. The multi-stage furnace hearth of claim 5, wherein: the lining of the refractory brick is provided with an expansion joint along the axial direction of the shell.

7. The multi-stage furnace hearth of claim 1, wherein: the included angle between two adjacent bed boards is 5-20 degrees.

8. The multi-stage furnace hearth of claim 1, wherein: the bottom of bed board is equipped with the supporting part, the upper surface of supporting part is inconsistent with the lower surface of bed board, the lower surface level of supporting part sets up.

9. The multi-stage furnace hearth of claim 1, wherein: the bottom of the shell is conical.

10. The multi-stage furnace hearth of claim 1, wherein: the shell is provided with a smoke outlet.