Sealing structure between fire grates for biomass straw furnace

Abstract

The invention discloses a sealing structure between fire grates for a biomass straw furnace, and relates to the field of fire grates, the sealing structure comprises a chain type fire grate assembly, rotating shafts and rotating wheels, the rotating shafts are symmetrically arranged in the chain type fire grate assembly, the rotating wheels are fixedly connected to the outer sides of the rotating shafts at equal intervals, and grooves are formed in the outer sides of the rotating wheels at equal intervals; according to the chain-type fire grate assembly, through dynamic matching of the sealing parts and the embedding grooves, when the fire grate segments are horizontal, the sealing parts are naturally embedded into the embedding grooves to form preliminary sealing, when the fire grate segments turn, the sealing parts can flexibly slide outwards from the embedding grooves, and therefore the sealing parts are not prone to falling off when the fire grate segments turn. The gap generated by the change of the included angle is filled, so that the close fit between the grate segments is always kept, the air leakage phenomenon in the combustion process is effectively prevented, the sealing performance of the grate is greatly enhanced by the dynamic sealing adjustment mechanism, and the combustion efficiency and the heat efficiency are improved.

Description

Technical Field

[0001] The invention relates to the field of grates, and in particular to a grate inter-grate sealing structure for a biomass straw furnace. Background Art

[0002] As a clean and renewable energy resource, biomass straw is increasingly used in the energy field. As a device that uses straw to burn electricity or heat, the performance of the biomass straw stove directly affects the energy utilization efficiency and environmental protection effect. As one of the core components of the biomass straw stove, the sealing performance of the grate is directly related to the stability and efficiency of the combustion process.

[0003] As a type of biomass straw stove, the chain grate is reliable in operation and has stable combustion. During the operation of the biomass straw stove, the grate continuously rotates to transport straw and other fuels. However, when the grate rotates to the turning point, an angle is formed between the two adjacent grates, causing the grates to rotate with each other and produce a gap. As the angle changes, the gap between the two grates will increase significantly. This not only reduces the sealing performance of the grate, but also aggravates the air leakage during the combustion process. Air leakage will take away a lot of heat, reduce the temperature in the furnace, and thus affect the full combustion and combustion efficiency of the fuel.

[0004] The increase in the gap may also cause airflow turbulence during the combustion process, affecting the stability of the flame. An unstable flame will not only reduce the combustion efficiency, but may also increase the generation of harmful substances, such as nitrogen oxides, causing environmental pollution. Summary of the invention

[0005] In order to make up for the deficiencies of the existing technical problems, the purpose of the present invention is to provide a grate sealing structure for a biomass straw stove, which solves the following technical problems: how to reduce the problem of increased gaps when the grate is rotating to transport materials to a turning point, and how to improve the durability and maintenance convenience of the grate.

[0006] In order to solve the problems of the prior art, the technical solution of the present invention is as follows:

[0007] A grate sealing structure for a biomass straw stove comprises a chain grate assembly, a rotating shaft and a rotating wheel, wherein the chain grate assembly is symmetrically provided with a rotating shaft inside, the rotating wheel is fixedly connected to the outer side of the rotating shaft at equal intervals, and grooves are opened at equal intervals on the outer side of the rotating wheel, three groups of protrusions are fixedly connected to the inner wall of the chain grate assembly at equal intervals, each group of protrusions is provided with a plurality of protrusions, and the plurality of protrusions are fixedly connected to the inner wall of the chain grate assembly at equal intervals, each group of protrusions cooperates with the grooves on the two rotating wheels at corresponding positions on the outer sides of the two rotating shafts, and the rotating wheels on the outer sides of the two rotating shafts are connected through the chain grate assembly.

[0008] Preferably, the chain grate assembly includes chain belts, grate plates and connecting rods, and three chain belts are equidistantly arranged. Each group of protrusions is fixedly connected to the inner side of the corresponding chain belts, and the grate plates are chain-arranged between the chain belts. The four corners of the bottom of the grate plates are fixedly connected with sleeves, and the sleeves at the bottom of two adjacent grate plates are staggered. Connecting rods are equidistantly slidably inserted inside the three chain belts, and the sleeves on adjacent sides of the bottom of two adjacent grate plates are respectively sleeved on the outside of the same corresponding connecting rod.

[0009] Preferably, the chain belt comprises a plurality of chain plates arranged in a chain shape, the protrusions are fixedly connected to the inner sides of the corresponding chain plates, one ends of adjacent chain plates are interlaced and plugged with each other, and adjacent ends of adjacent chain plates are slidably connected to the outer sides of corresponding connecting rods.

[0010] Preferably, one side of the chain piece and one side of the grate piece are curved and extended in an arc shape to form a sealing portion, and the other side of the chain piece and the other side of the grate piece are provided with an arc-shaped embedding groove, and the sealing portions are slidably connected inside adjacent embedding grooves.

[0011] Preferably, the bottom of the grate plate is provided with ribs, which are fixedly connected to sleeves at the four corners of the corresponding grate plate. The ribs increase the strength and stability of the grate plate and prevent the grate plate from being deformed or damaged under the weight of fuel and high temperature environment.

[0012] Preferably, strip grooves are symmetrically provided on the top of the grate plate, and waist-shaped holes are equidistantly provided on the top of the grate plate in the strip grooves. The strip grooves and waist-shaped holes can provide passages for air circulation, which is conducive to the full combustion of fuel.

[0013] Preferably, nuts are threadedly connected to the outer sides of both ends of the connecting rod, and the connecting rod and the sleeve are fastened by the nuts to ensure that the connection between the grate plates is firm and reliable.

[0014] Preferably, the center of the sealing portion is consistent with the center of the sleeve corresponding to the same side, ensuring that the sealing portion can be smoothly embedded in and out of the embedding groove during the sliding process.

[0015] Compared with the prior art, the advantages of the present invention are as follows:

[0016] 1. The dynamic matching mechanism between the sealing part and the embedding groove of the present invention is the core of the sealing structure. When the grate pieces are horizontal to each other, the sealing part is naturally embedded in the embedding groove to form a preliminary seal. When the grate pieces turn, the sealing part can flexibly slide outward from the embedding groove to fill the gap caused by the change in the angle, thereby always maintaining a close fit between the grate pieces and effectively preventing air leakage during the combustion process. This dynamic sealing adjustment mechanism greatly enhances the sealing performance of the grate and improves the combustion efficiency and thermal efficiency.

[0017] 2. The stable connection of the chain belt, grate and connecting rod, as well as the precise transmission of the shaft and the runner, ensures that the grate can remain stable and continuous during operation. This stability not only helps the fuel to be evenly distributed and fully burned, but also reduces the problem of unstable combustion caused by grate vibration or deviation, and improves the overall operating efficiency of the biomass straw stove. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the chain belt structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the chain structure of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of the grate plate of the present invention;

[0022] Figure 5 It is a schematic diagram of the top structure of the grate plate of the present invention;

[0023] Figure 6 It is a schematic diagram of the bottom structure of the grate plate of the present invention.

[0024] Figure numerals: 1, chain grate assembly; 2, rotating shaft; 3, rotating wheel; 31, groove; 11, protrusion; 12, chain belt; 13, grate plate; 14, connecting rod; 121, chain plate; 131, sleeve; 122, sealing part; 123, embedded groove; 134, rib; 135, strip groove; 136, waist-shaped hole; 141, nut. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] The grate sealing structure for the biomass straw stove comprises a chain grate assembly 1, a rotating shaft 2 and a rotating wheel 3;

[0027] like Figures 1 to 6 As shown, a rotating shaft 2 is symmetrically arranged inside the chain grate assembly 1, a rotating wheel 3 is equidistantly fixedly connected to the outside of the rotating shaft 2, a groove 31 is equidistantly provided on the outside of the rotating wheel 3, three groups of protrusions 11 are equidistantly fixedly connected to the inner wall of the chain grate assembly 1, each group of protrusions 11 is provided with a plurality of protrusions, and a plurality of protrusions 11 are equidistantly fixedly connected to the inner wall of the chain grate assembly 1, each group of protrusions 11 cooperates with the grooves 31 on the two rotating wheels 3 at corresponding positions on the outsides of the two rotating shafts 2, and the rotating wheels 3 on the outsides of the two rotating shafts 2 are transmission-connected through the chain grate assembly 1;

[0028] When the rotating shaft 2 rotates, it drives the rotating wheel 3, and the groove 31 on the outer side of the rotating wheel 3 cooperates with the chain grate assembly 1 to drive the chain grate assembly 1 to rotate, so that the grate can operate smoothly and continuously.

[0029] like Figures 1 to 6 As shown, the chain grate assembly 1 includes a chain belt 12, a grate sheet 13 and a connecting rod 14. Three chain belts 12 are equidistantly arranged. Each group of protrusions 11 is fixedly connected to the inner side of the corresponding chain belt 12. The grate sheets 13 are chain-arranged between the chain belts 12. The four corners of the bottom of the grate sheet 13 are fixedly connected with sleeves 131. The sleeves 131 at the bottom of two adjacent grate sheets 13 are staggered. The connecting rods 14 are equidistantly slidably inserted inside the three chain belts 12. The sleeves 131 at the adjacent sides of the bottom of two adjacent grate sheets 13 are respectively sleeved on the outer side of the same corresponding connecting rod 14.

[0030] The bottom of the grate plate 13 is slidably connected to the connecting rod 14 through the sleeve 131 to form a stable grate structure. At the same time, the two adjacent grate plates 13 are connected to each other through the connecting rod 14, and the grate plate 13 is connected to the chain belt 12 through the connecting rod 14 to achieve mutual linkage between the chain belt 12 and the grate plate 13.

[0031] like Figures 1 to 6 As shown, the chain belt 12 includes a plurality of chain pieces 121 arranged in a chain shape, the protrusions 11 are fixedly connected to the inner sides of the corresponding chain pieces 121, one ends of adjacent chain pieces 121 are interlaced and plugged with each other, and one end of adjacent chain pieces 121 is slidably connected to the outer sides of the corresponding connecting rods 14;

[0032] The adjacent chain pieces 121 are staggered and slidably connected to the outside of the connecting rod 14 , so that the chain belt 12 can maintain a certain flexibility and adaptability during the transmission process.

[0033] like Figures 1 to 6 As shown, one side of the chain piece 121 and one side of the grate piece 13 are curved and extended in an arc shape to form a sealing portion 122, and the other side of the chain piece 121 and the other side of the grate piece 13 are provided with an arc-shaped embedding groove 123, and the sealing portion 122 is slidably connected inside the adjacent embedding groove 123;

[0034] When the grate slices 13 are in a horizontal position, the sealing portion 122 is naturally embedded in the embedding groove 123 of the adjacent grate slice 13 to form a preliminary seal. When the grate slices 13 rotate to a turning point with the chain belt 12, the angle between the two adjacent grate slices 13 will change, causing the gap between them to increase. At this time, the sealing portion 122 will slide outward from the embedding groove 123 to fill the gap caused by the change in the angle, ensuring that the sealing is not affected. This dynamic adjustment mechanism is the key to maintaining the sealing between the grates.

[0035] like Figures 1 to 6As shown, a rib 134 is provided at the bottom of the grate plate 13, and the rib 134 is fixedly connected to the sleeves 131 at the four corners of the corresponding grate plate 13. The rib 134 not only increases the strength of the grate plate 13, but also further stabilizes the grate structure through the fixed connection with the sleeve 131 to prevent the sealing effect from being affected by deformation.

[0036] like Figures 1 to 6 As shown, strip grooves 135 are symmetrically provided on the top of the grate plate 13, and waist-shaped holes 136 are equidistantly provided in the strip grooves 135 on the top of the grate plate 13. The strip grooves 135 and waist-shaped holes 136 on the top of the grate plate 13 are used for ventilation and cleaning.

[0037] like Figures 1 to 6 As shown, nuts 141 are threadedly connected to the outer sides of both ends of the connecting rod 14, which enhances the overall stability and load-bearing capacity of the grate structure and also facilitates the assembly and disassembly of the entire chain grate assembly 1.

[0038] like Figures 1 to 6 As shown, the center of the sealing portion 122 is consistent with the center of the sleeve 131 corresponding to the same side, ensuring that the sealing portion 122 can smoothly fit into and exit the embedding groove 123 during the sliding process, thereby avoiding the occurrence of jamming or wear.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grate sealing structure for a biomass straw stove, comprising: A chain grate assembly (1), a rotating shaft (2) and a rotating wheel (3), characterized in that the chain grate assembly (1) is symmetrically provided with a rotating shaft (2) inside, the rotating shaft (2) is equidistantly fixedly connected to the outside of the rotating shaft (2), the rotating wheel (3) is equidistantly provided with grooves (31) on the outside of the rotating wheel (3), the inner wall of the chain grate assembly (1) is equidistantly fixedly connected with three groups of protrusions (11), each group of protrusions (11) is provided with a plurality of protrusions, and the plurality of protrusions (11) are equidistantly fixedly connected to the inner wall of the chain grate assembly (1), each group of protrusions (11) cooperates with the grooves (31) on the two rotating wheels (3) at corresponding positions on the outside of the two rotating shafts (2), and the rotating wheels (3) on the outside of the two rotating shafts (2) are connected through the chain grate assembly (1).

2. The grate sealing structure for a biomass straw stove according to claim 1, characterized in that: The chain grate assembly (1) comprises a chain belt (12), a grate plate (13) and a connecting rod (14); three chain belts (12) are equidistantly arranged; each group of protrusions (11) is respectively fixedly connected to the inner side of the corresponding chain belt (12); grate plates (13) are arranged in a chain-like manner between the chain belts (12); sleeves (131) are fixedly connected to the four corners of the bottom of the grate plates (13); the sleeves (131) at the bottom of two adjacent grate plates (13) are arranged staggered; connecting rods (14) are equidistantly slidably inserted inside the three chain belts (12); and the sleeves (131) at the adjacent sides of the bottom of two adjacent grate plates (13) are respectively sleeved on the outer side of the same corresponding connecting rod (14).

3. The grate sealing structure for a biomass straw stove according to claim 2, characterized in that: The chain belt (12) comprises a plurality of chain plates (121) arranged in a chain shape, the protrusions (11) are fixedly connected to the inner sides of the corresponding chain plates (121), one ends of adjacent chain plates (121) are interlaced and plugged into each other, and adjacent ends of adjacent chain plates (121) are slidably connected to the outer sides of corresponding connecting rods (14).

4. The grate sealing structure for a biomass straw stove according to claim 3, characterized in that: One side of the chain piece (121) and one side of the grate piece (13) are both curved and extended in an arc shape to form a sealing portion (122), and the other side of the chain piece (121) and the other side of the grate piece (13) are both provided with an arc-shaped embedding groove (123), and the sealing portion (122) is slidably connected inside the adjacent embedding groove (123).

5. The grate sealing structure for a biomass straw stove according to claim 2, characterized in that: The bottom of the grate plate (13) is provided with ribs (134), and the ribs (134) are fixedly connected to the sleeves (131) at the four corners of the corresponding grate plate (13).

6. The grate sealing structure for a biomass straw stove according to claim 2, characterized in that: The top of the grate plate (13) is symmetrically provided with strip grooves (135), and the top of the grate plate (13) is equidistantly provided with waist-shaped holes (136) located in the strip grooves (135).

7. The grate sealing structure for a biomass straw stove according to claim 2, characterized in that: Nuts (141) are threadedly connected to the outer sides of both ends of the connecting rod (14).

8. The grate sealing structure for a biomass straw stove according to claim 4, characterized in that: The center of the sealing portion (122) is consistent with the center of the sleeve (131) corresponding to the same side.

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