CN215294950U - Fire grate with high combustion rate and low coking - Google Patents
Fire grate with high combustion rate and low coking Download PDFInfo
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- CN215294950U CN215294950U CN202120479962.5U CN202120479962U CN215294950U CN 215294950 U CN215294950 U CN 215294950U CN 202120479962 U CN202120479962 U CN 202120479962U CN 215294950 U CN215294950 U CN 215294950U
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Abstract
The utility model discloses a fire grate with high combustion rate and low coking, belonging to the technical field of energy conversion equipment, which comprises a material cavity, a fixed plate, a connecting plate and a driving mechanism, the material cavity is fixedly connected on the furnace body, the right side of the material cavity is provided with an ash outlet, the fixed plate is arranged at the bottom of the material cavity, a plurality of long holes which are arranged in parallel are arranged at the left side of the fixed plate, the connecting plate is horizontally arranged below the fixed plate, the connecting plate is provided with a plurality of vertically arranged row bars which are in a plate shape, the row bars are provided with a plurality of parallel arrangement, the bottom ends of the row bars are fixedly connected on the connecting plate, the long holes are arranged corresponding to the row bars, the top ends of the row bars penetrate through the long holes, the length of slot hole slightly is greater than the length of row strip, actuating mechanism sets up in the connecting plate below, and drive connecting plate clockwise movement. The device can improve the utilization rate of fuel, realize automatic slag discharge, prevent fuel coking, and is safe and convenient to use and energy-saving.
Description
Technical Field
The utility model belongs to the technical field of energy conversion equipment's technique and specifically relates to a grate of low coking of high combustion rate for biomass furnace is related to.
Background
The biomass fuel is a sustainable clean renewable energy source, is formed by extrusion molding of waste crop straws, husks, branches, wood and the like, and has the characteristics of wide source, low price and environmental protection, particularly in vast rural areas. However, because of the wide sources of biomass raw materials, the characteristics of biomass fuels from different sources are greatly different, the biomass fuel mainly comprises volatile matters, ash and fixed carbon, and the influence of each component on combustion mainly comprises the following aspects:
the higher the volatile content, the faster it burns, the more fuel it burns per unit time, the greater the power of the same furnace type and vice versa. When people use the biomass furnace, the used fuel has low volatile content and slow combustion speed, so that the power of the biomass furnace is reduced, and the expected effect cannot be achieved. And the more fuel is added, the more fuel exceeds the combustion capacity of the biomass furnace, so that the problems of insufficient combustion, coking, furnace damage and the like are caused.
Except volatile components, the biomass fuel mainly comprises fixed carbon and ash, wherein the ash content is generally 3-6%, and the rest is fixed carbon. In the furnace, after the biomass fuel is heated and cracked, the fixed carbon is continuously combusted, and finally, the part which is not completely combusted and the ash are combined together to form the coke residue to be discharged. The ash content varies less, the lower the fixed carbon with high volatiles and vice versa for a typical biomass fuel. Fixed carbon burns at a slower rate than volatile components. Particularly, the content of volatile components is high, the content of fixed carbon is low, the influence of the change of the percentage of the volatile components on the specific gravity of the fixed carbon is larger, and the combustion time of the fixed carbon is a main factor for determining the combustion of the biomass furnace.
The ash content of the biomass fuel is high in viscosity, and the fuel which is combusted is easily adhered together in the combustion process to form a stack, so that air inlet is blocked, and the combustion speed and the yield are further influenced.
If the biomass fuel can not be fully combusted during combustion, tar can be generated in the combustion process of the biomass fuel, and ash generated in the heat exchanger and the combustion are combined together to form coking on the surface of the heat exchanger, so that the heat exchange efficiency is influenced, and even the heat exchanger is blocked.
In summary, how to prevent coking of biomass furnaces is a long-standing challenge.
SUMMERY OF THE UTILITY MODEL
The utility model provides a grate of low coking of high combustion rate, its abundant combustion rate that can improve fuel realizes automatic row's sediment, prevents the coking, convenience safe in utilization and energy saving.
The utility model discloses a solve technical problem through following technical scheme:
the utility model provides a grate of low coking of high combustion rate, includes material chamber, fixed plate, connecting plate and actuating mechanism, material chamber rigid coupling is on the furnace body, the right side in material chamber is equipped with the ash hole, the fixed plate sets up the bottom in material chamber, the left side of fixed plate is equipped with a plurality of parallel arrangement's slot hole, the connecting plate level sets up in the fixed plate below, be provided with the row strip that a plurality of was placed on the connecting plate erects, the row strip is platelike, the row strip is equipped with a plurality of and parallel arrangement, the bottom rigid coupling of row strip is on the connecting plate, the slot hole corresponds the setting with the row strip, the top of row strip is passed the slot hole, the length of slot hole slightly is greater than the length of row strip, actuating mechanism sets up in the connecting plate below and drives the connecting plate clockwise movement.
According to the fire grate with the high combustion rate and the low coking rate, the driving mechanism comprises the motor, the chain wheel, the transmission shaft, the driving block and the eccentric wheel, the eccentric wheel is embedded on the driving block, the top of the driving block is fixedly connected with the connecting plate, the transmission shaft penetrates through the furnace body, the power output end of the transmission shaft is connected with the eccentric wheel, and the power input end of the transmission shaft is in transmission with the motor through the chain wheel.
According to the grate with high combustion rate and low coking, the right side of the fixing plate is provided with a plurality of ash falling holes.
According to the grate with the high combustion rate and the low coking rate, the top of the row bar is provided with the plurality of shifting blocks, the thickness of the shifting blocks is the same as that of the row bar, the shifting blocks are rectangular, and the shifting blocks are uniformly distributed on the row bar.
According to the grate with the high combustion rate and the low coking rate, the eccentricity of the eccentric wheel is matched with the vertical moving distance of the row bars.
Compared with the prior art, the row strip can prevent fuel from accumulating on the fixed plate by moving up and down, and can also push the fuel from left to right. The row bar moves along with the rotation of the eccentric wheel, so that the row bar can do left-right reciprocating movement while moving up and down relative to the fixed plate. Therefore, the fuel on the row bars can be driven to move, the movable rail and the plurality of teeth can move up and down to loosen the fuel to prevent aggregation and coking, and the moving up and down can increase the air inlet amount between the row bars and the long holes. When fuel falls into the material cavity gradually, the row strip moves from left to right to push the fuel from left to right, and the shifting block moves up and down to play a loosening role so as to prevent coking caused by fuel accumulation. The up-and-down movement of the row bars can also promote air inlet, which is beneficial to combustion, and meanwhile, fuel is also selected, so that the contact area of the fuel and air is increased, and the combustion rate of the fuel is increased.
Drawings
FIG. 1 is a diagram illustrating the usage of the present invention;
FIG. 2 is a schematic structural view of the present invention;
fig. 3 is a schematic view of the internal structure of the present invention;
fig. 4 is a schematic structural view of the fixing plate of the present invention;
fig. 5 is a schematic structural diagram of the row bar of the present invention;
reference numerals in the drawings denote: 1. the automatic feeding device comprises a material cavity, 2 parts of a fixing plate, 3 parts of a connecting plate, 4 parts of an ash outlet, 5 parts of a long hole, 6 parts of a row bar, 7 parts of a motor, 8 parts of a chain wheel, 9 parts of a transmission shaft, 10 parts of a driving block, 11 parts of an eccentric wheel, 12 parts of an ash falling hole and 13 parts of a shifting block.
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 provided to illustrate the invention.
As shown in the attached drawings 1 to 5, the utility model comprises a material cavity 1, a fixed plate 2, a connecting plate 3 and a driving mechanism, the material cavity 1 is fixedly connected on the furnace body, the right side of the material cavity 1 is provided with an ash outlet 4, the fixed plate 2 is arranged at the bottom of the material cavity 1, a plurality of long holes 5 which are arranged in parallel are arranged at the left side of the fixed plate 2, the connecting plate 3 is horizontally arranged below the fixed plate 2, a plurality of vertical bars 6 are arranged on the connecting plate 3, the bars 6 are plate-shaped, a plurality of parallel bars are arranged on the bars 6, the bottom ends of the row strips 6 are fixedly connected on the connecting plate 3, the long holes 5 are arranged corresponding to the row strips 6, the top end of the row bar 6 penetrates through the long hole 5, the length of the long hole 5 is slightly larger than that of the row bar 6, and the driving mechanism is arranged below the connecting plate 3 and drives the connecting plate 3 to move clockwise. Through the setting, on the row strip 6 of the interior of material chamber 1 was fallen to the fuel, then actuating mechanism drove row strip clockwise turning, can, row strip 6 reciprocates like this and can prevent that fuel from piling up on fixed plate 2, also can be with fuel to the propelling movement from a left side to the right side.
Referring to fig. 3, in order to pave the fuel, the driving mechanism includes a motor 7, a chain wheel 8, a transmission shaft 9, a driving block 10 and an eccentric wheel 11, the eccentric wheel 11 is embedded on the driving block 10, the top of the driving block 10 is fixedly connected with the connecting plate 3, the transmission shaft 9 penetrates through the furnace body, the power output end of the transmission shaft 9 is connected with the eccentric wheel 11, and the power input end of the transmission shaft 9 is in transmission with the motor 7 through the chain wheel 8. Through the arrangement, the row strips 6 move along with the rotation of the eccentric wheel 11, so that the row strips 6 can move up and down and can move back and forth left and right relative to the fixed plate 2. When fuel falls to material intracavity 1 gradually, arrange strip 6 from a left side to right side and remove and to carry fuel from a left side to right side propelling movement, arrange the reciprocating of strip 6 and can stabilize the frequency of fuel below air inlet, help the stable combustion, also spur fuel simultaneously, increase the area of contact of fuel and air. The combustion rate of the fuel is improved.
Referring to fig. 3, in order to facilitate the fuel pushed out from the fire grate to be fully combusted and facilitate the ash after the fuel is combusted to be discharged as soon as possible, a plurality of ash falling holes 12 are formed at the right side of the fixed plate 2. The ash falling hole 12 can adjust certain intake, and the fuel burns completely from the in-process that moves from a left side to the right side gradually like this, and the ash that burns is pushed to the right side then the ash falling hole 12 falls down, and the remaining fuel propelling movement that does not burn continues to burn to the ash falling hole 12 above, and the ash that burns up falls down through the ash falling hole 12 by a small amount, and most ash or burnt form are pushed to the right side and are gone out through the ash outlet.
The top of row strip 6 is equipped with shifting block 13, shifting block 13 with the thickness of row strip 6 is the same. The shifting blocks are rectangular and are uniformly distributed on the row strips. Thus, the shifting block can jump up and down and convey fuel to the right side in order. Prevents fuel from falling onto the row strips 6 and forming coke deposits, and the shifting block 13 also helps to shift fuel to the right.
Preferably, the distance between the row bar and the two sides of the long hole is 1mm, and the eccentric distance of the eccentric wheel 11 is matched with the vertical moving distance of the row bar 6. When the row of strips 6 moves upwards to the highest point, the lower edge of the shifting block is 1-2mm higher than the fixed plate, and the connecting plate 3 is close to the fixed plate 2; when the row bar 6 moves downwards to the lowest point, the shifting block 13 is not lower than the lower edge of the long hole 5.
During the use, fix material chamber 1 in the feed opening below of furnace body, the feed opening is located the top of grate, then adjusts the input speed of fuel according to actual conditions, opens the draught fan simultaneously, and the furnace body is in little negative pressure state, and eccentric wheel 11 drives row strip 6 and rotates, and the fuel is pushed to the right gradually, and ashes are discharged through ash falling hole 12 and ash hole 4. According to different fuels, the rotating speed of the eccentric wheel 11 and the air inlet amount of the induced draft fan can be adjusted to match the combustion speed of the fuels.
The foregoing is only a preferred embodiment of the present invention, and 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 (5)
1. The grate with high combustion rate and low coking is characterized by comprising a material cavity (1), a fixed plate (2), a connecting plate (3) and a driving mechanism, wherein the material cavity (1) is fixedly connected on a furnace body, an ash outlet (4) is formed in the right side of the material cavity (1), the fixed plate (2) is arranged at the bottom of the material cavity (1), a plurality of long holes (5) which are arranged in parallel are formed in the left side of the fixed plate (2), the connecting plate (3) is horizontally arranged below the fixed plate (2), a plurality of vertical bars (6) are arranged on the connecting plate (3), the bars (6) are plate-shaped, the bars (6) are provided with a plurality of bars and are arranged in parallel, the bottom ends of the bars (6) are fixedly connected on the connecting plate (3), the long holes (5) are arranged corresponding to the bars (6), and the top ends of the bars (6) penetrate through the long holes (5), the length of the long hole (5) is slightly larger than that of the row bar (6), and the driving mechanism is arranged below the connecting plate (3) and drives the connecting plate (3) to move clockwise.
2. The grate with high combustion rate and low coking according to claim 1, characterized in that the driving mechanism comprises a motor (7), a chain wheel (8), a transmission shaft (9), a driving block (10) and an eccentric wheel (11), the eccentric wheel (11) is embedded on the driving block (10), the top of the driving block (10) is fixedly connected with the connecting plate (3), the transmission shaft (9) penetrates through the furnace body, the power output end of the transmission shaft (9) is connected with the eccentric wheel (11), and the power input end of the transmission shaft (9) is transmitted with the motor (7) through the chain wheel (8).
3. The grate with high combustion rate and low coking according to claim 2, characterized in that the right side of the fixed plate (2) is provided with a plurality of ash falling holes (12).
4. The grate with high combustion rate and low coking according to claim 3, characterized in that a plurality of shifting blocks (13) are arranged at the top of the row bars (6), the thickness of the shifting blocks (13) is the same as that of the row bars (6), the shifting blocks are rectangular, and the shifting blocks are uniformly distributed on the row bars.
5. The grate with high combustion rate and low coking according to claim 4, characterized in that the eccentricity of said eccentric (11) is matched to the vertical travel distance of the bars (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120479962.5U CN215294950U (en) | 2021-03-05 | 2021-03-05 | Fire grate with high combustion rate and low coking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120479962.5U CN215294950U (en) | 2021-03-05 | 2021-03-05 | Fire grate with high combustion rate and low coking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215294950U true CN215294950U (en) | 2021-12-24 |
Family
ID=79533085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120479962.5U Active CN215294950U (en) | 2021-03-05 | 2021-03-05 | Fire grate with high combustion rate and low coking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215294950U (en) |
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2021
- 2021-03-05 CN CN202120479962.5U patent/CN215294950U/en active Active
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| GR01 | Patent grant | ||
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Effective date of registration: 20230426 Address after: 057350 west of Beitou Road, Fengya street, Xinxing Industrial Park, Jize County, Handan City, Hebei Province Patentee after: Handan yechuang Energy Saving Technology Co.,Ltd. Address before: 050000 room 1207, COSCO building, 368 Youyi North Street, Shijiazhuang City, Hebei Province Patentee before: Hebei yechuang Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |