A honeycomb briquette without air holes

Abstract

The utility model relates to honeycomb coal technical field especially discloses a kind of honeycomb coal without needing air hole, the briquette is provided with multiple first through holes, first through hole is along the thickness direction of briquette and is penetrated through briquette, multiple first through holes are annular array around the central axis of briquette;Along the circumferential direction of the first reference circle of multiple first through holes annular array, the length of first through hole is greater than the distance between the end of adjacent two first through holes each other close to each other.This utility model is through the design of axis symmetry's multi-hole layout mode, realizes the automatic misregistration intercommunication of each through hole when honeycomb coal structure is stacked, completely gets rid of traditional honeycomb coal " to hole " link, effectively improves operation convenience and use safety.

Description

Technical Field

[0001] This utility model relates to the field of honeycomb briquette technology, and in particular discloses a honeycomb briquette that does not require air holes. Background Technology

[0002] Currently, the traditional use of honeycomb briquettes in heating stoves typically relies on a fixed pore structure to achieve air circulation and combustion support. For example, Chinese utility model patent application dated June 19, 2018, with publication number CN208748039U, discloses a type of heating honeycomb briquette that utilizes heating holes penetrating the briquette block, annularly arranged ignition holes, and ventilation holes connected to the heating holes, combined with a polygonal briquette block structure to expand the space between the briquette block and the stove wall, thereby achieving better ventilation and more complete combustion.

[0003] While the aforementioned technologies have played a role in improving the ventilation efficiency of honeycomb briquettes, they still have the following defects and shortcomings: First, the structure requires strict alignment of the air holes during design and use to ensure the connectivity and ventilation effect between the channels, which places high demands on manual positioning and makes operation inconvenient; Second, the distribution of multiple functional through holes in different areas of the coal block increases the complexity of the forming process and the requirements for opening accuracy, and the geometric layout of different channels is easily affected by errors, affecting the overall combustion efficiency and safety; Third, when coal blocks are stacked, if the through holes are not precisely aligned, the airflow channel will be interrupted, forming a "dead zone," reducing combustion efficiency and increasing the risk of carbon monoxide accumulation. Utility Model Content

[0004] In order to overcome the above-mentioned technical problems in the prior art, the purpose of this utility model is to provide a new type of honeycomb briquette structure with a more reasonable structural design that can realize airflow communication between multiple coal blocks without precise hole alignment, so as to simplify the use process, improve combustion stability, and form an automatically matching airflow channel in the case of multiple blocks, thereby improving air circulation efficiency and combustion safety.

[0005] To achieve the above objectives, this utility model provides a honeycomb briquette that does not require air holes. The briquette has multiple first through holes, which penetrate the briquette along its thickness direction. The multiple first through holes are arranged in a circular array around the central axis of the briquette. Along the direction of the first reference circle in which the multiple first through holes are arranged in a circular array, the length of the first through hole is greater than the distance between the two adjacent first through holes at their closest ends.

[0006] Furthermore, the first through hole is a non-circular hole, and the first through hole is formed by multiple first inner hole side surfaces, at least one of which is an arc-shaped surface, a plane, or a wavy surface.

[0007] Furthermore, the minimum spacing t between two adjacent first through holes is less than the distance p between the farthest ends of the first through holes.

[0008] Furthermore, the first through hole is an arc-shaped hole that penetrates the coal block to form an arc-shaped sidewall on the coal block. The arc-shaped sidewall is projected in a direction perpendicular to the upper surface of the coal block to form an arc segment, and the center of the arc segment coincides with the central axis of the coal block.

[0009] Furthermore, the coal block is provided with multiple second through holes, which are arranged in a ring around the central axis of the coal block. Along the direction of the second reference circle in which the multiple second through holes are arranged in a ring, the length of the second through hole is greater than the distance between the two adjacent second through holes at their closest ends. The radius of the second reference circle in which the multiple second through holes are arranged in a ring is greater than the radius of the first reference circle in which the multiple first through holes are arranged in a ring. After the coal block is rotated at any angle around the central axis of the coal block, the second through holes of one coal block and the second through holes of another coal block are interconnected to form a second airflow channel.

[0010] Furthermore, the structure of the second through hole is the same as that of the first through hole.

[0011] Furthermore, the second through hole is a non-circular hole, and the second through hole is formed by multiple second inner hole side surfaces, at least one of which is an arc-shaped surface, a flat surface, or a wavy surface.

[0012] Furthermore, the number of the second through holes is twice the number of the first through holes.

[0013] Furthermore, the number of the second through holes is 8, and the number of the first through holes is 4.

[0014] Furthermore, the coal block is also provided with a third through hole, the central axis of which coincides with the central axis of the coal block. When two coal blocks are stacked on top of each other and placed in the external furnace cavity, the third through holes of the two coal blocks are interconnected to form a third airflow channel.

[0015] Furthermore, the cross-section of the third through hole is circular or polygonal.

[0016] Furthermore, the coal block is arranged in a cylindrical shape.

[0017] The beneficial effects of this utility model are as follows: By designing an axisymmetric multi-hole arrangement, this utility model achieves automatic misalignment and connection of the through holes when the honeycomb briquette structure is stacked, completely eliminating the traditional "hole alignment" process for honeycomb briquettes and effectively improving operational convenience and safety. The non-circular or arc-shaped hole structure, combined with the misaligned arrangement, enhances air disturbance capability and channel redundancy, ensuring continued ventilation and combustion even when the channels are partially blocked, damp, or misaligned.

[0018] The design of the second through hole and its increased number enables the coal blocks to have stronger airflow connection and combustion uniformity in a multi-layer combination state; the third through hole, as the central high-flow gas channel, effectively guides hot air to rise directly, enhancing the heat absorption efficiency of the heating pipe.

[0019] The cylindrical structure of the coal block can be naturally nested in the furnace, and it works in conjunction with the first, second and third through holes to form multiple longitudinal airflow channels, which fully ensures the oxygen supply environment required for the combustion of honeycomb briquettes, significantly improves combustion thermal efficiency, reduces carbon residue and inhibits the risk of carbon monoxide accumulation. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the coal block according to this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of two coal blocks stacked concentrically according to this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of a coal block after partial cross-section according to the present invention;

[0023] Figure 4 This is a top view of the coal block of this utility model when the first through hole is an arc-shaped hole;

[0024] Figure 5 This is a planar schematic diagram of the coal block of this utility model when both the first through hole and the second through hole are arc-shaped holes, and it is rotated to the first angle.

[0025] Figure 6 This is a planar schematic diagram of the coal block of this utility model when both the first and second through holes are arc-shaped holes, and it is rotated to the second angle.

[0026] Figure 7 This is a plan view of the coal block of this utility model when both the first through hole and the second through hole are irregularly shaped holes;

[0027] Figure 8 This is a planar schematic diagram of two coal blocks stacked and rotated to a certain angle when only the first and third through holes are provided in the coal blocks of this utility model.

[0028] Figure 9 This is a plan view of two coal blocks stacked and rotated to a certain angle when only the second and third through holes are provided in the coal blocks of this utility model.

[0029] Figure 10 This is a plan view of another embodiment of the present invention, in which the first through hole and the second through hole of the coal block are both irregularly shaped holes;

[0030] Figure 11This is a plan view of another embodiment of the present invention, where the first and second through holes of the coal block are both irregularly shaped holes.

[0031] The reference numerals in the figures include:

[0032] 1. Coal block; 2. First reference circle; 3. Second reference circle; 11. First through hole; 110. First airflow channel; 12. Arc-shaped sidewall; 13. Arc segment; 14. Second through hole; 140. Second airflow channel; 15. Third through hole; 150. Third airflow channel. Detailed Implementation

[0033] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0034] Please see Figures 1 to 11 As shown, the core of this utility model is a honeycomb briquette that does not require air holes. It is achieved by pre-setting multiple first through holes 11 symmetrically distributed around the central axis on the body of the coal block 1. When multiple coal blocks 1 are stacked, they can automatically form longitudinal or multi-layer airflow channels without the need for alignment angles. This simplifies the coal combustion operation steps, improves air flow efficiency, and achieves more complete and safer combustion.

[0035] Specifically, in this embodiment, the basic structure of the honeycomb briquette includes a briquette body 1, four first through holes 11, eight second through holes 14, and one third through hole 15. The first through holes 11 and the second through holes 14 are both arc-shaped holes. The briquette body 1 is preferably a cylindrical structure, with its axis defined as the central axis. The multiple first through holes 11 and the multiple second through holes 14 are arranged in a ring or symmetrical manner around the central axis.

[0036] Specifically, in this embodiment, the third through hole 15 is a circular hole, and the central axis of the third through hole 15 coincides with the central axis of the coal block 1.

[0037] Specifically, along the circumferential direction of the first reference circle 2 in which multiple first through holes 11 are arranged in a ring, the length p of the first through hole 11 is greater than the distance t between the two adjacent first through holes 11 at their closest ends. In use, the first coal block 1 is first placed at the bottom of the furnace cavity, and then the second coal block 1 is placed on top of the first coal block 1. Due to the cylindrical structure of the coal block 1, combined with the internal structure of the furnace cavity, the third through hole 15 of the two coal blocks 1 can be made to connect even if they are placed randomly.

[0038] In addition, in this embodiment, four first through holes 11 are provided, and the four first through holes 11 are equally spaced around the central axis of the coal block 1. Since the length p of the first through hole 11 is greater than the distance t between the closest ends of two adjacent first through holes 11 along the circumferential direction of the first reference circle 2 in which the multiple first through holes 11 are arranged in a ring, and the cross-sectional area m covered by the first through hole 11 is greater than the cross-sectional area n between the coal material between two adjacent first through holes 11, the first through hole 11 of the second coal block 1 can always be connected to the first through hole 11 of the first coal block 1, regardless of whether the second coal block 1 is placed or rotated after placement. No manual secondary alignment is required, saving operation time.

[0039] Specifically, the first through hole 11 is a through hole that runs through the entire height of the coal block 1. In actual manufacturing, its shape can be circular, elliptical, or other geometric shapes. The first through holes 11 are evenly distributed around the central axis. In practical applications, these first through holes 11 are opened in the coal block 1 during the manufacturing stage using molds or CNC machining technology. This ensures that no matter what angle each honeycomb coal block 1 is rotated to, after being stacked with the adjacent coal blocks 1 above and below, the first through hole 11 can always communicate with at least a portion of the through holes in the coal blocks above and below, thus forming a continuous first airflow channel 110. Since the distribution of multiple first through holes 11 is rotationally symmetrical, it is not necessary to manually align the hole positions precisely during the stacking process, which greatly simplifies the operation.

[0040] The first channel formed by the interconnection of the first through holes 11 of two or more coal blocks 1 allows air to be transported upward from the bottom of the furnace along the height direction of the coal blocks 1.

[0041] Specifically, the cross-section of the coal between two adjacent first through holes 11 forms an angled structure, that is, multiple first through holes 11 divide the coal block 1 into several "fan-shaped coal segments". The solid part between each segment is relatively thin, which helps to enhance the heat diffusion efficiency during combustion. Especially when the coal blocks 1 are stacked, if the through holes are not completely connected, the solid segments between them can also be heated quickly because they are relatively thin, thus accelerating the overall combustion process.

[0042] To further enhance the gas flow path, this invention provides multiple second through holes 14 outside the first through hole 11. Preferably, the number, shape, and size of the second through holes 14 are different from those of the first through holes 11, but their positions relative to the central axis of the coal block 1 are the same. The first through hole 11 is located between the second through holes 14 and the third through hole 15. For example, there are four first through holes 11 and eight second through holes. Of course, depending on actual needs, the number of second through holes 14 can be the same as the number of first through holes 11, in which case their shapes and sizes will be different.

[0043] In one embodiment, the second through hole 14 is an arc-shaped hole with a cross-sectional profile of arc segment 13, forming an outwardly bulging arc-shaped sidewall 12. This structure guides the hot airflow to flow close to the inner wall of the coal block 1 during gas flow, avoiding turbulence and heat loss caused by the airflow hitting the straight wall of the through hole. The center of the arc segment 13 coincides with the central axis of the coal block 1, ensuring a stable and symmetrical distribution in the projection direction (perpendicular to the top of the coal block 1), and facilitating uniform arrangement and mold opening during mold processing.

[0044] Considering that the second through-hole 14 also needs to undertake part of the air diversion task during combustion, in an improved structure, the second through-hole 14 can be set as an irregularly shaped hole. Irregularly shaped refers to a cross-section that is not circular, such as elliptical, rhomboid, or polygonal. The purpose of this design is to optimize airflow velocity and path control, while providing a larger edge heat transfer area.

[0045] Furthermore, by designing the cross-sectional area of ​​the coal between two adjacent irregular holes to be smaller than the flow area of ​​the irregular hole itself, it can be ensured that even when multiple holes are not fully connected, the gas can still penetrate the micropores of the coal block 1 to achieve the combustion-supporting effect.

[0046] The third through hole 15 is located at the center of the coal block 1, extending through the entire height of the coal block 1 along the central axis. Its cross-section is preferably circular, and its diameter is between the first through hole 11 and the second through hole 14. For example, it is set between 35mm and 50mm. In practical applications, this third through hole 15 serves as the main heat flow channel, playing a crucial role in the linear ascent of hot air after combustion and the absorption of heat by the heating pipes.

[0047] When the coal block 1 adopts a cylindrical structure, multiple honeycomb coal blocks 1 are stacked one on top of the other and placed in the external furnace cavity. The third through hole 15 will automatically connect to form a continuous central airflow channel, namely the third airflow channel 150. This not only improves the air circulation efficiency, but also serves as the heat source supply path for the boiler heat absorption core tube, greatly enhancing the heat energy utilization efficiency.

[0048] All the aforementioned through holes can be formed in one step using precision molds during manufacturing. Coal block 1 can be produced using a compression molding process or a hybrid high-pressure molding + perforation technology. The locations of all through holes are assisted by CNC or laser positioning to ensure that their angles and axes are uniformly symmetrical, resulting in good structural consistency. To prevent clogging of the through holes, appropriate amounts of bentonite, composite binders, etc., can be added to the raw materials to improve structural strength and crack resistance.

[0049] In practical use, users only need to stack several honeycomb briquette blocks 1 sequentially into the combustion chamber of the coal stove. There is no need to worry about whether the through holes between each briquette block 1 are aligned; it is only necessary to ensure that they are stacked along the central axis. Since multiple first through holes 11 and multiple second through holes 14 are symmetrically arranged around the center, and the axis of the third through hole 15 coincides with the axis of the briquette block 1, and the upper and lower through holes can be connected after rotating at any angle, the briquette blocks 1 automatically form a through first airflow channel 110, second airflow channel 140, and third airflow channel 150 after being assembled.

[0050] Even if some through holes are blocked by ash or deformed by moisture, this structure can still allow gas to flow around the blockage by relying on multiple spare through holes, which greatly improves the fault tolerance of the system.

[0051] Furthermore, during the ignition process, the ignition source can directly ignite the middle coal bed through the third through hole 15 from the bottom of the furnace, and the heat convection through the third through hole 15 will trigger the synchronous combustion of the coal in the surrounding first through hole 11; while the ventilation gas enters from the periphery or bottom of the furnace cavity, and enters the coal block 1 vertically through the second through hole 14 and the third through hole 15, improving the combustion efficiency and preventing heat accumulation at the bottom.

[0052] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A honeycomb briquette that does not require pore filling, comprising briquette blocks (1); characterized in that: The coal block (1) has multiple first through holes (11), which penetrate the coal block (1) along its thickness. The multiple first through holes (11) are arranged in a ring around the central axis of the coal block (1). Along the circumference of the first reference circle (2) in which the multiple first through holes (11) are arranged in a ring, the length of the first through hole (11) is greater than the distance between two adjacent first through holes (11) at one end.

2. The honeycomb briquette without the need for air pores according to claim 1, characterized in that: The first through hole (11) is a non-circular hole. The first through hole (11) is formed by multiple first inner hole side surfaces, and at least one first inner hole side surface is an arc-shaped surface, a plane or a wave-shaped surface.

3. The honeycomb briquette without the need for air pores according to claim 1, characterized in that: The first through hole (11) is an arc-shaped hole. The arc-shaped hole penetrates the coal block (1) and forms an arc-shaped sidewall (12) on the coal block (1). The arc-shaped sidewall (12) is projected in a direction perpendicular to the upper surface of the coal block (1) to form an arc segment (13). The center of the arc segment (13) coincides with the central axis of the coal block (1).

4. The honeycomb briquette without the need for air pores according to claim 1, characterized in that: The coal block (1) is also provided with a plurality of second through holes (14), which are arranged in a ring around the central axis of the coal block (1); along the circumferential direction of the second reference circle (3) in which the plurality of second through holes (14) are arranged in a ring, the length of the second through hole (14) is greater than the distance between the two adjacent second through holes (14) at one end; the radius of the second reference circle (3) in which the plurality of second through holes (14) are arranged in a ring is greater than the radius of the first reference circle (2) in which the plurality of first through holes (11) are arranged in a ring.

5. The honeycomb briquette without the need for air pores according to claim 4, characterized in that: The structure of the second through hole (14) is the same as that of the first through hole (11).

6. The honeycomb briquette without the need for air pores according to claim 4, characterized in that: The second through hole (14) is a non-circular hole. The second through hole (14) is formed by multiple second inner hole side surfaces, and at least one second inner hole side surface is an arc-shaped surface, a plane or a wavy surface.

7. The honeycomb briquette without the need for air pores according to claim 4, characterized in that: The number of the second through holes (14) is greater than the number of the first through holes (11).

8. The honeycomb briquette without the need for air pores according to claim 1, characterized in that: The coal block (1) is also provided with a third through hole (15). The central axis of the third through hole (15) coincides with the central axis of the coal block (1). When two coal blocks (1) are stacked on top of each other, the third through holes (15) of the two coal blocks (1) are connected to each other to form a third airflow channel (150).

9. The honeycomb briquette without the need for air pores according to claim 8, characterized in that: The cross-section of the third through hole (15) is circular or polygonal.

10. The honeycomb briquette without the need for air pores according to claim 1, characterized in that: The coal blocks (1) are arranged in a cylindrical or regular polygonal shape.

Images