Combustion hearth

Abstract

The utility model provides a combustion hearth which is characterized in that the combustion hearth comprises an inner furnace barrel, an outer furnace barrel, a fire grate, an air inlet assembly and an ash removal assembly, the inner furnace barrel is arranged in the outer furnace barrel, and a first gap is reserved between the inner wall of the inner furnace barrel and the inner wall of the outer furnace barrel. The fire grate is connected to the bottom of the inner furnace barrel and divides the outer furnace barrel into a main combustion chamber and an ash storage chamber. The air inlet assembly is arranged at the bottom of the outer furnace barrel and communicates with the lower portion of the inner furnace barrel, the air inlet assembly comprises an air inlet end and an air outlet end which are oppositely arranged in the extending direction of the air inlet assembly, and the air outlet direction of the air outlet end faces the fire grate. In the embodiment of the invention, the combustion hearth is provided with the inner furnace barrel and the outer furnace barrel, the fuel is combusted in the inner furnace barrel, and the combusted particles are blown out by the air inlet assembly and fall into the ash storage chamber below from the first gap between the inner furnace barrel and the outer furnace barrel, so that the content of dust entering a subsequent heat exchange device can be reduced to a greater extent; and the accumulation of combusted inorganic matters on the fire grate is less, and the probability of coking of the fire grate is lower.

Description

Technical Field

[0001] This application relates to the field of stove technology, and in particular to a combustion furnace. Background Technology

[0002] The combustion chamber is a crucial part of combustion equipment, serving as the space where fuel undergoes combustion reactions. In commonly used technologies, the combustion of fuel in the combustion chamber produces a significant amount of ash. This ash can negatively impact subsequent heat exchange devices. Furthermore, inorganic matter from combustion accumulates on the grate, leading to slagging and affecting combustion efficiency. Utility Model Content

[0003] The main purpose of this utility model is to provide a combustion furnace to solve the problems of excessive dust and easy coking of the grate in the existing combustion furnace.

[0004] To achieve the above objectives, this utility model provides a combustion furnace, including an inner furnace cylinder, an outer furnace cylinder, a grate, an air inlet assembly, and an ash removal assembly, wherein...

[0005] The inner furnace cylinder is located inside the outer furnace cylinder, and a first gap is left between the inner walls of the inner furnace cylinder and the outer furnace cylinder;

[0006] The grate is connected to the bottom of the inner furnace cylinder, and the grate divides the outer furnace cylinder into the main combustion chamber and the ash storage chamber;

[0007] The air inlet assembly is located at the bottom of the outer furnace cylinder and communicates with the bottom of the inner furnace cylinder. The air inlet assembly includes an air inlet end and an air outlet end that are arranged opposite to each other along its own extension direction. The air outlet end is directed towards the grate.

[0008] The ash removal assembly is located on the side of the outer furnace cylinder opposite to the air inlet assembly, and the ash removal assembly is connected to the ash storage chamber;

[0009] Among them, the particles from the main combustion chamber fall into the ash storage chamber through the first gap.

[0010] In one embodiment, a feeding channel is also included. The feeding channel is disposed on the wall of the outer furnace cylinder, located above the air inlet assembly, and is inclined downwards and connected to the inner furnace cylinder.

[0011] In one embodiment, the first gap between the inner walls of the inner furnace cylinder and the outer furnace cylinder is an annular gap for the ash and slag after combustion to pass through.

[0012] In one embodiment, the system further includes multiple supports, all located at the same horizontal height and spaced apart on the inner wall of the outer furnace cylinder, with the inner furnace cylinder installed above the supports.

[0013] In one embodiment, the inner furnace cylinder includes a furnace body and a base, with a grate positioned between the furnace body and the base.

[0014] In one embodiment, the grate and the inner furnace cylinder are connected by overlapping.

[0015] In one embodiment, the outer furnace cylinder also has a furnace door, which is at the same height as the inner furnace cylinder.

[0016] In one embodiment, the furnace door and the ash removal assembly are arranged vertically, one above the other, on the same side of the outer furnace cylinder.

[0017] In one embodiment, the air inlet is a circular pipe, and the air outlet is connected to the air inlet and extends to the bottom of the inner furnace cylinder.

[0018] In one embodiment, the size of the end of the air outlet near the inner furnace cylinder corresponds to the size of the inner furnace cylinder.

[0019] In this embodiment, the combustion furnace has an inner furnace cylinder and an outer furnace cylinder. The fuel is burned in the inner furnace cylinder, and the particulate matter after combustion is blown out by the air inlet assembly. The particulate matter falls into the ash storage chamber below through the first gap between the inner and outer furnace cylinders. This can greatly reduce the amount of dust entering the subsequent heat exchange device, and less inorganic matter accumulates on the grate after combustion, resulting in a lower probability of coking on the grate. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the combustion chamber in one embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the inner furnace cylinder in one embodiment of the present invention.

[0023] Figure descriptions: 1. Outer furnace cylinder; 11. Main combustion chamber; 12. Ash storage chamber; 2. Inner furnace cylinder; 21. Furnace body; 22. Base; 3. Grate; 4. Air inlet assembly; 41. Air inlet end; 42. Air outlet end; 5. Ash removal assembly; 6. First gap; 7. Feeding channel; 8. Support; 9. Furnace door. Detailed Implementation

[0024] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0026] When numerical ranges are given in the embodiments, it should be understood that, unless otherwise stated in this invention, both endpoints of each numerical range and any value between the two endpoints may be selected. Unless otherwise defined, all technical and scientific terms used in this invention, as well as the prior art known to those skilled in the art and the description of this invention, may be implemented using any prior art methods, devices, and materials similar to or equivalent to those described, used, or made of materials in the embodiments of this invention.

[0027] The main purpose of this utility model is to provide a combustion furnace to solve the problems of excessive dust and easy coking of the grate in the existing combustion furnace.

[0028] To achieve the above objectives, this utility model provides a combustion furnace, including an inner furnace cylinder 2, an outer furnace cylinder 1, a grate 3, an air inlet assembly 4, and an ash removal assembly 5, wherein...

[0029] The inner furnace cylinder 2 is located inside the outer furnace cylinder 1, and a first gap 6 is left between the inner furnace cylinder 2 and the inner wall of the outer furnace cylinder 1;

[0030] The grate 3 is connected to the bottom of the inner furnace cylinder 2, and the grate 3 divides the outer furnace cylinder 1 into the main combustion chamber 11 and the ash storage chamber 12.

[0031] The air inlet assembly 4 is located at the bottom of the outer furnace cylinder 1 and communicates with the bottom of the inner furnace cylinder 2. The air inlet assembly 4 includes an air inlet end 41 and an air outlet end 42 arranged opposite to each other along its own extension direction. The air outlet end 42 is directed towards the grate 3.

[0032] The ash removal assembly 5 is located on the side of the outer furnace cylinder 1 opposite to the air inlet assembly 4, and the ash removal assembly 5 is connected to the ash storage chamber 12;

[0033] Among them, the particles from the main combustion chamber 11 fall into the ash storage chamber 12 through the first gap 6.

[0034] It should be noted that the height of the outer furnace cylinder 1 is higher than that of the inner furnace cylinder 2. After the particles are blown out of the inner furnace cylinder 2, they are difficult to continue flying above the outer furnace cylinder 1. Most of them fall into the ash storage chamber 12 through the first gap 6 between the inner furnace cylinder 2 and the outer furnace cylinder 1.

[0035] In this embodiment, the combustion furnace has an inner furnace cylinder 2 and an outer furnace cylinder 1. The fuel is burned in the inner furnace cylinder 2, and the particulate matter after combustion is blown out by the air inlet assembly 4. The particulate matter falls from the first gap 6 between the inner furnace cylinder 2 and the outer furnace cylinder 1 into the ash storage chamber 12 below. This can greatly reduce the amount of dust entering the subsequent heat exchange device, and less inorganic matter accumulates on the grate 3 after combustion, resulting in a lower probability of coking on the grate 3.

[0036] In one embodiment, a feeding channel 7 is also included. The feeding channel 7 is disposed on the wall of the outer furnace cylinder 1, located above the air inlet assembly 4, and is inclined downward and connected to the inner furnace cylinder 2.

[0037] In this embodiment, the feed channel 7 is set on the wall of the outer furnace cylinder 1, inclined downwards, and connected to the inner furnace cylinder 2. This allows fuel to be added into the inner furnace cylinder 2 at any time through the feed channel 7, which is simple and convenient. The fuel can fall directly into the inner furnace cylinder 2 through the inclined feed channel 7. The feeding is smooth, which can reduce the accumulation of materials in the feed channel 7 and help maintain the stability of the reaction in the furnace.

[0038] In one embodiment, the first gap 6 between the inner walls of the inner furnace cylinder 2 and the outer furnace cylinder 1 is an annular gap for the ash and slag after combustion to pass through.

[0039] In this embodiment, the first gap 6 is an annular gap. After the dust is blown out from the inner furnace cylinder 2, it can directly enter the ash storage chamber 12 below from any section of the annular gap, which can reduce dust accumulation, stabilize the combustion process, and reduce problems such as uneven temperature distribution and reduced combustion efficiency caused by dust accumulation.

[0040] In one embodiment, the system also includes multiple supports 8, all located at the same horizontal height and spaced apart on the inner wall of the outer furnace cylinder 1, with the inner furnace cylinder 2 installed above the supports 8.

[0041] It should be noted that the supports 8 are set at a uniform horizontal height on the inner wall of the outer furnace cylinder 1, and the intervals between multiple supports 8 are the same.

[0042] In this embodiment, multiple supports 8 are spaced apart on the inner wall of the outer furnace cylinder 1 and are located at the same horizontal height. This allows the inner furnace cylinder 2 to be installed more stably in the outer furnace cylinder 1 and facilitates the installation and disassembly of the inner furnace cylinder 2.

[0043] In one embodiment, the inner furnace cylinder 2 includes a furnace body 21 and a base 22, and the grate 3 is disposed between the furnace body 21 and the base 22.

[0044] It should be noted that the base 22 is made of multiple stacked steel plates, which are fixed together with bolts. The grate 3 is erected on the base 22, and the furnace body 21 is set above the grate 3.

[0045] In this embodiment, the grate 3 is positioned between the furnace body 21 and the base 22. The base 22 can provide a more stable support for the grate 3, thereby reducing the displacement or deformation of the grate 3 during the process of bearing the weight of fuel and combustion.

[0046] In one embodiment, the grate 3 and the inner furnace cylinder 2 are connected by overlapping.

[0047] It should be noted that the grate 3 is attached to the base 22 of the inner furnace cylinder 2, and the furnace body 21 is installed above the grate 3.

[0048] In this embodiment, the grate 3 and the inner furnace cylinder 2 are connected by overlapping. This connection method facilitates the installation and disassembly of the grate 3, makes maintenance simple and convenient, and reduces costs.

[0049] In one embodiment, the outer furnace cylinder 1 also has a furnace door 9, which is flush with the height of the inner furnace cylinder 2.

[0050] In this embodiment, the furnace door 9 is flush with the inner furnace cylinder 2, allowing operators to easily observe the combustion of the inner furnace cylinder 2 through the furnace door 9. This makes adding or removing materials to the inner furnace cylinder 2 more convenient and simple. Inspection and maintenance of the inner furnace cylinder 2 can also be carried out by directly opening the furnace door 9, reducing the difficulty and cost of maintenance.

[0051] In one embodiment, the furnace door 9 and the ash removal assembly 5 are arranged vertically and located on the same side of the outer furnace cylinder 1.

[0052] In this embodiment, the furnace door 9 and the ash removal assembly 5 are located on the same side of the outer furnace cylinder 1, effectively saving space on the side of the furnace body 21. When performing maintenance work on the furnace chamber, maintenance personnel can concentrate on working on one side of the furnace body 21, improving the efficiency of maintaining and cleaning the furnace chamber.

[0053] In one embodiment, the air inlet 41 is a circular pipe, and the air outlet 42 is connected to the air inlet 41 and extends to the bottom of the inner furnace cylinder 2.

[0054] In this embodiment, the air inlet 41 is a circular pipe, and the air outlet 42 is connected to the air inlet 41 and extends to the bottom of the inner furnace cylinder 2. This can promote the complete combustion of fuel in the inner furnace cylinder 2 and improve the thermal energy utilization efficiency.

[0055] In one embodiment, the size of the end of the air outlet 42 near the inner furnace cylinder 2 corresponds to the size of the inner furnace cylinder 2.

[0056] It should be noted that the air outlet 42 is a conical pipe with a gradually increasing diameter, with the larger diameter end corresponding to the bottom of the inner furnace cylinder 2.

[0057] In this embodiment, the size of the end of the air outlet 42 near the inner furnace cylinder 2 corresponds to the size of the inner furnace cylinder 2. This allows the air in the air outlet 42 to be blown out of the inner furnace cylinder 2, thereby blowing the dust on the grate 3 out of the inner furnace cylinder 2 and into the ash storage chamber 12. This makes it easier to clean the grate 3 and reduces the coking of the grate 3.

[0058] The above technical solutions of this utility model are merely preferred embodiments and do not limit the patent scope of this utility model. All equivalent structural transformations made under the technical concept of this utility model using the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this utility model.

Claims

1. A combustion chamber, characterized by, The furnace comprises an inner furnace cylinder, an outer furnace cylinder, a grate, an air inlet assembly and an ash removal assembly, The inner furnace cylinder is arranged inside the outer furnace cylinder, and a first gap is left between the inner furnace cylinder and the inner wall of the outer furnace cylinder; The grate is connected to the bottom of the inner furnace cylinder, and the grate divides the outer furnace cylinder into a main combustion chamber and an ash storage chamber; The air inlet assembly is arranged at the bottom of the outer furnace cylinder and communicates with the lower part of the inner furnace cylinder, and the air inlet assembly comprises an air inlet end and an air outlet end arranged oppositely along the extending direction of the air inlet assembly, and the air outlet end is directed towards the grate; The ash removal assembly is arranged on the side of the outer furnace cylinder opposite to the air inlet assembly, and the ash removal assembly communicates with the ash storage chamber; The particles from the main combustion chamber fall into the ash storage chamber through the first gap.

2. The combustion chamber of claim 1, wherein The furnace further comprises a feeding channel arranged on the wall of the outer furnace cylinder and located above the air inlet assembly, and the feeding channel is arranged obliquely downwards and connected to the inner furnace cylinder.

3. The combustion chamber of claim 1, wherein The first gap between the inner furnace cylinder and the inner wall of the outer furnace cylinder is an annular gap for the passage of ash after combustion.

4. The combustion chamber of claim 3, wherein The furnace further comprises a plurality of supports arranged at the same horizontal height and spaced apart on the inner wall of the outer furnace cylinder, and the inner furnace cylinder is arranged above the supports.

5. The combustion chamber of claim 1, wherein The inner furnace cylinder comprises a furnace body and a base, and the grate is arranged between the furnace body and the base.

6. The combustion chamber of claim 5, wherein The grate is connected to the inner furnace cylinder in a lapping manner.

7. The combustion chamber of claim 1, wherein The outer furnace cylinder further comprises a furnace door, and the height of the furnace door is flush with the height of the inner furnace cylinder.

8. The combustion chamber of claim 7, wherein The furnace door and the ash removal assembly are arranged vertically on the same side of the outer furnace cylinder.

9. The combustion chamber of claim 1, wherein The air inlet end is a circular pipe, and the air outlet end is connected to the air inlet end and extends to the bottom of the inner furnace cylinder.

10. The combustion chamber of claim 9, wherein The size of the end of the air outlet end close to the inner furnace cylinder corresponds to the size of the inner furnace cylinder.

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