CN213362532U - Straw flow-assisting feeding device of combustion boiler - Google Patents
Straw flow-assisting feeding device of combustion boiler Download PDFInfo
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- CN213362532U CN213362532U CN202021677181.9U CN202021677181U CN213362532U CN 213362532 U CN213362532 U CN 213362532U CN 202021677181 U CN202021677181 U CN 202021677181U CN 213362532 U CN213362532 U CN 213362532U
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Abstract
The utility model discloses a flow-assisting straw feeding device of a combustion boiler, which aims to provide a flow-assisting straw feeding device which can effectively avoid the straws to be knotted and piled up, so that straw fuel is fully stirred uniformly, thereby improving the combustion utilization rate of the straws. The device comprises a primary stirring feeder, wherein the primary stirring feeder comprises a primary feeding pipe, a primary feeding port and a primary discharging port, wherein the primary feeding port and the primary discharging port are arranged on the primary feeding pipe; the second-stage stirring feeder comprises a second-stage feeding pipe, a second-stage feeding port and a second-stage discharging port, wherein the second-stage feeding port and the second-stage discharging port are formed in the second-stage feeding pipe; the blanking pipe is connected with the primary discharge port and the secondary feed port; the straw knotting prevention flow aiding device comprises a wind guide opening and a blast device, wherein the wind guide opening is formed in the upper portion of the side wall of a primary feeding pipe, the blast device blows air towards a primary discharging opening from top to bottom through the wind guide opening, and straws which are conveyed to the primary discharging opening in a primary stirring feeder and are knotted are blown away.
Description
Technical Field
The utility model relates to a straw feeder, concretely relates to combustion boiler's straw helps a class feeder.
Background
The straw fuel is mainly straws of crops such as corn, rice and the like, and also comprises biomass combustible materials such as weeds, residual branches and the like. In recent years, with the rapid development of economy, coal and electricity resources are in tension, so that the straw fuel is expected to replace coal and electricity and be used as a living fuel and an industrial material for power generation, heating and the like; however, the volume of the straw is large, the weight is light, a large amount of labor needs to be consumed in the traditional agriculture to carry out processing activities, the agricultural labor cost is greatly increased, and the manual labor is not sufficient to receive the straws.
In the prior art, mechanical operation is adopted to complete collection and treatment of straws, the straws are used as biological energy sources to replace coal electricity to perform combustion power generation, heating and the like after treatment, but due to the existence of branches and large-particle matters in the straws, when the straws are collected and treated, the situation that the straws are piled up is easy to happen, so that the situation that the combustion is insufficient can happen, fuel is wasted, the workload of subsequent recovery is increased, and the actual utilization rate of the straw fuel is only about 30% at present.
In view of this, how to stir straw fuel more fully and avoid the straw from being knotted into piles so as to improve the combustion utilization rate of straw is one of the technical problems to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can effectively avoid the straw to tie into and pile, make straw fuel intensive mixing even to improve the straw of the combustion boiler's of the combustion utilization ratio of straw class feed device that helps.
The technical scheme of the utility model is that:
a straw flow-assisting feeding device of a combustion boiler comprises: the primary stirring and feeding machine comprises a primary feeding pipe, a primary feeding port and a primary discharging port, wherein the primary feeding port and the primary discharging port are arranged on the primary feeding pipe; the second-stage stirring feeder is positioned below the first-stage stirring feeder and comprises a second-stage feeding pipe, a second-stage feeding port and a second-stage discharging port, and the second-stage feeding port and the second-stage discharging port are formed in the second-stage feeding pipe; the blanking pipe is connected with the primary discharge port and the secondary feed port; the straw knotting prevention flow aiding device comprises a wind guide opening and a blast device, wherein the wind guide opening is formed in the upper portion of the side wall of a primary feeding pipe, the blast device blows air towards a primary discharging opening from top to bottom through the wind guide opening, and straws which are conveyed to the primary discharging opening in a primary stirring feeder and are knotted are blown away.
The straw flow-assisting feeding device of the combustion boiler has the following specific work:
straw fuel enters a primary feeding pipe from a primary feeding port, the straw fuel is stirred while being conveyed to the primary feeding port continuously through a primary stirring feeder, in the process, a blowing device blows air towards a primary discharging port from top to bottom through an air guide port to form high-speed air flow, when the straw is conveyed to the primary discharging port, the straw is blown away downwards, so that the straw which is knotted and stirred unevenly is blown away, the blown-away straw falls into a secondary feeding pipe through the primary feeding port, a blanking pipe and the secondary feeding port, and the straw is effectively prevented from being knotted into piles; then, the straw fuel is further stirred by the second-stage stirring feeder, so that the straw fuel is fully and uniformly stirred, meanwhile, the straw fuel is continuously conveyed forwards, and the fully and uniformly stirred straw fuel is output into a combustion boiler through a second-stage discharge port, so that the combustion utilization rate of the straw is improved.
Preferably, the secondary air supply pipeline is connected with the air guide opening, and a heater is arranged in the secondary air supply pipeline. The blower device is shared with the secondary fan of the combustion boiler, so that the blower device is not only saved, and the cost is increased; more importantly, because the secondary air supply pipeline of the combustion boiler needs a heater to heat the air flow entering the combustion boiler, the air flow in the primary feeding pipe is introduced through the secondary air supply pipeline, the connecting pipeline and the air guide port, the air flow is high-temperature air flow, the air flow can blow away straws which are knotted and stirred unevenly, the straws are prevented from being knotted and piled, and the straws can be dried, so that the combustion utilization rate of the straws is further improved. In addition, the secondary fan of the combustion boiler has very large wind power, and the normal operation of the combustion boiler can not be influenced through some air flows which are guided by the secondary air supply pipeline, the connecting pipeline and the air guide opening, so that the utilization rate of the secondary fan can be improved.
Preferably, the air blowing device is an air blower arranged at the air guide opening.
Preferably, the air guide opening is positioned between the primary feeding opening and the primary discharging opening in the axial direction of the primary feeding pipe, and the air blowing device blows air obliquely towards the primary discharging opening from top to bottom through the air guide opening. So, through the slope air current that the slope was blown and is produced, be favorable to blowing away downwards the inhomogeneous straw of knoing and stirring will take place, avoid the straw to tie up and pile up.
Preferably, the straw knotting prevention flow aiding device further comprises a compressed air source and an air amplifier, the air amplifier is arranged on the upper portion of the side wall of the primary feeding pipe, one end of the air amplifier is located on the outer side of the primary feeding pipe to form an air inlet, the other end of the air amplifier is communicated with the inner cavity of the primary feeding pipe to form an air outlet, the inner cavity of the air amplifier forms the air guide opening, the air blowing device is connected with the air inlet, and the compressed air inlet of the air amplifier is connected with the compressed air source. Therefore, the speed and the flow of the air flow introduced into the primary feeding pipe can be amplified through the air amplifier, high-speed and high-capacity air flow is formed, knotting and uneven stirring of the straws are blown downwards, and the straws are prevented from being knotted and piled.
Preferably, the air guide opening sequentially comprises a drainage cavity, a throat connecting cavity and an expansion cavity from the air inlet to the air outlet, the inner diameter of the drainage cavity is gradually reduced from the air inlet to the air outlet, the inner diameter of the expansion cavity is gradually increased from the air inlet to the air outlet, an annular airflow chamber is arranged in the side wall corresponding to the throat connecting cavity, the annular airflow chamber is connected with the throat connecting cavity through an annular nozzle, the annular nozzle inclines towards the air outlet, and the compressed air inlet is communicated with the annular airflow chamber.
Preferably, the first-level discharge port is arranged at the end part of the first-level feeding pipe, and the first-level discharge port is arranged downwards.
Preferably, the second grade discharge gate sets up the tip at the second grade feeding pipe, and the second grade discharge gate sets up downwards.
Preferably, a feeding hopper is further arranged on the first-stage feeding port.
Preferably, the primary mixer feeder is a screw feeder.
Preferably, the secondary mixer feeder is a screw feeder.
The utility model has the advantages that: can effectively avoid the straws from being knotted into piles, and lead the straw fuel to be fully and uniformly stirred, thereby improving the combustion utilization rate of the straws.
Drawings
Fig. 1 is a schematic structural diagram of a straw flow-assisting feeding device of a combustion boiler of the utility model.
Fig. 2 is a schematic view of a partial section structure of the straw knotting prevention flow aiding device of the present invention.
Fig. 3 is another schematic partial sectional structure of the straw knotting prevention flow aiding device of the present invention.
In the figure:
the device comprises a primary stirring feeder 1, a primary feeding pipe 1.1, a primary feeding port 1.2 and a primary discharging port 1.3;
a secondary stirring feeder 2, a secondary feeding pipe 2.1, a secondary feeding port 2.2 and a secondary discharging port 2.3;
a blanking pipe 3;
the straw knotting prevention flow aiding device comprises a straw knotting prevention flow aiding device 4, an air guide opening 4.1, a drainage cavity 4.11, a throat connecting cavity 4.12, an expansion cavity 4.13, a blowing device 4.2, a connecting pipeline 4.21, a blower 4.22, an air amplifier 4.3, an annular airflow chamber 4.31, a compressed air inlet 4.32 and an annular nozzle 4.33;
and a feeding hopper 5.
Detailed Description
To make the objects, technical solutions and advantages of embodiments of the present invention clearer, the embodiments of the present invention are clearly explained and illustrated below with reference to the accompanying drawings, but the following embodiments are only preferred embodiments of the present invention, not all embodiments. Based on the embodiments in the embodiment, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present solution, and are not construed as limiting the present solution.
These and other aspects of embodiments of the invention will be apparent with reference to the following description and attached drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the ways in which the principles of the embodiments of the invention may be practiced, but it is understood that the scope of the embodiments of the invention is not limited thereby. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "a plurality" means one or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The first embodiment is as follows: as shown in fig. 1, the straw flow-assisting feeding device of the combustion boiler comprises a frame, a primary stirring and feeding machine 1, a secondary stirring and feeding machine 2, a blanking pipe 3 and a straw knotting-preventing flow-assisting device 4. The first-stage mixer feeder and the second-stage mixer feeder are both fixed on the frame.
The first-stage stirring feeder comprises a first-stage feeding pipe 1.1, a first-stage feeding port 1.2 and a first-stage discharging port 1.3, wherein the first-stage feeding port and the first-stage discharging port are arranged on the first-stage feeding pipe. The straw fuel is stirred for one time in the first-stage stirring feeder, and meanwhile, the first-stage stirring feeder conveys the straw fuel towards the direction of the first-stage feeding port continuously. In this embodiment, one-level mixer feeder is screw feeder, and other conveyor can also be chooseed for use to one-level mixer feeder of course.
The second grade mixer feeder is located the below of one-level mixer feeder, and the second grade mixer feeder includes second grade feeder pipe 2.1, sets up second grade pan feeding mouth 2.2 and second grade discharge gate 2.3 on the second grade feeder pipe. The straw fuel is secondarily stirred in the secondary stirring feeder, and meanwhile, the secondary stirring feeder continuously conveys the straw fuel towards the direction of the secondary feeding port. In this embodiment, second grade mixer feeder is screw feeder, and other conveyor can also be chooseed for use to second grade mixer feeder of course.
The blanking pipe 3 is connected with the first-stage discharge port and the second-stage feeding port. The blanking pipes extend up and down, and in the embodiment, the blanking pipes are vertically distributed.
As shown in fig. 1 and 2, the straw knotting prevention flow aiding device 4 comprises an air guide opening 4.1 and an air blowing device 4.2 which are arranged at the upper part of the side wall of the primary feeding pipe. The blowing device blows air from top to bottom towards the primary discharge hole through the air guide hole, and blows off the straws which are conveyed to the primary discharge hole in the primary stirring feeder and knotted.
The straw flow-assisting feeding device of the combustion boiler has the following specific work:
straw fuel enters a primary feeding pipe from a primary feeding port, the straw fuel is stirred while being conveyed to the primary feeding port continuously through a primary stirring feeder, in the process, a blowing device blows air towards a primary discharging port from top to bottom through an air guide port to form high-speed air flow, when the straw is conveyed to the primary discharging port, the straw is blown away downwards, so that the straw which is knotted and stirred unevenly is blown away, the blown-away straw falls into a secondary feeding pipe through the primary feeding port, a blanking pipe and the secondary feeding port, and the straw is effectively prevented from being knotted into piles; then, the straw fuel is further stirred by the second-stage stirring feeder, so that the straw fuel is fully and uniformly stirred, meanwhile, the straw fuel is continuously conveyed forwards, and the fully and uniformly stirred straw fuel is output into a combustion boiler through a second-stage discharge port, so that the combustion utilization rate of the straw is improved.
Specifically, as shown in fig. 1, a feeding hopper 5 is further arranged on the primary feeding port, and straw fuel is poured into the feeding hopper during feeding. The second-stage discharge port is connected with the combustion boiler through the feeding pipe, and straw fuel output by the second-stage discharge port is conveyed into the combustion boiler through the feeding pipe. The one-level discharge gate sets up the tip at one-level feed pipe, and the one-level discharge gate sets up down. The second grade discharge gate sets up the tip at the second grade feeding pipe, and the second grade discharge gate sets up down.
Further, the air blowing device adopts any one of the following two modes,
firstly, as shown in fig. 1 and 2, a secondary air supply pipeline (not shown in the figure) connecting the secondary air supply pipeline and the air guide opening, and a secondary air supply pipeline (4.21) connecting the secondary air supply pipeline and the air guide opening together form the air blowing device 4.2, and a heater is arranged in the secondary air supply pipeline and used for heating air flow in the secondary air supply pipeline; the blower device of the mode is shared with the secondary fan of the combustion boiler, so that the blower device is not only saved, and the cost is increased; more importantly, because a heater is needed in the secondary air supply pipeline of the combustion boiler to heat the air flow entering the combustion boiler, the air flow introduced into the primary feeding pipe through the secondary air supply pipeline, the connecting pipeline and the air guide port is high-temperature air flow, which not only can blow away the straws which are knotted and unevenly stirred to avoid the straws from being knotted and piled, but also can dry the straws, thereby further improving the combustion utilization rate of the straws; in addition, the secondary fan of the combustion boiler has very large wind power, and the normal operation of the combustion boiler can not be influenced through some air flows which are guided by the secondary air supply pipeline, the connecting pipeline and the air guide opening, so that the utilization rate of the secondary fan can be improved.
Secondly, as shown in fig. 1 and 3, the air blowing device 4.2 is an air blower 4.22 arranged at the air guide opening, and the air blowing device of the mode directly installs the air blower at the air guide opening, so that the actual production and manufacturing are convenient.
Further, as shown in fig. 1, in the axial direction of the primary feeding pipe, the air guide opening is located between the primary feeding opening and the primary discharging opening, and the air blowing device blows air obliquely from top to bottom towards the primary discharging opening through the air guide opening. So, through the slope air current that the slope was blown and is produced, be favorable to blowing away downwards the inhomogeneous straw of knoing and stirring will take place, avoid the straw to tie up and pile up.
Further, as shown in fig. 2, the straw-knotting prevention flow-aiding device 4 further comprises a compressed air source and an air amplifier 4.3. The air amplifier 4.3 comprises a tube arranged in the upper part of the side wall of the primary feed pipe 1.1. One end of the inner cavity of the air amplifier is positioned on the outer side of the primary feeding pipe to form an air inlet, and the other end of the inner cavity of the air amplifier is communicated with the inner cavity of the primary feeding pipe to form an air outlet. The blower device 4.2 is connected with the air inlet. The compressed air inlet 4.32 of the air amplifier is connected with the compressed air source through a connecting pipe (the compressed air inlet 4.32 is arranged on the air amplifier). The inner cavity of the air amplifier forms the air guide opening 4.1. The wind guide opening comprises a drainage cavity 4.11, a throat connecting cavity 4.12 and an expansion cavity 4.13 which are connected in sequence from the wind inlet to the wind outlet. The internal diameter of drainage chamber is reduced gradually by the air intake toward the air outlet direction, and the internal diameter of expansion chamber is crescent by the air intake toward the air outlet direction. An annular airflow chamber 4.31 is arranged in the side wall corresponding to the throat connecting cavity, and the annular airflow chamber is connected with the throat connecting cavity through an annular nozzle 4.33. The annular nozzle inclines towards the air outlet direction. The compressed air inlet 4.32 communicates with the annular airflow chamber 4.31.
Therefore, the speed and the flow of the air flow introduced into the primary feeding pipe can be amplified through the air amplifier, high-speed and high-capacity air flow is formed, knotting and uneven stirring of the straws are blown downwards, and the straws are prevented from being knotted and piled.
Of course, the air guide opening may be an air blowing opening directly provided at an upper portion of the side wall of the primary feeding pipe, or the air guide opening may be formed by an inner cavity of the air guide pipe directly provided at an upper portion of the side wall of the primary feeding pipe.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and equivalent transformation of doing above embodiment the utility model discloses technical scheme's protection scope.
Claims (10)
1. A straw flow-assisting feeding device of a combustion boiler is characterized by comprising:
the primary stirring and feeding machine comprises a primary feeding pipe, a primary feeding port and a primary discharging port, wherein the primary feeding port and the primary discharging port are arranged on the primary feeding pipe;
the second-stage stirring feeder is positioned below the first-stage stirring feeder and comprises a second-stage feeding pipe, a second-stage feeding port and a second-stage discharging port, and the second-stage feeding port and the second-stage discharging port are formed in the second-stage feeding pipe;
the blanking pipe is connected with the primary discharge port and the secondary feed port;
the straw knotting prevention flow aiding device comprises a wind guide opening and a blast device, wherein the wind guide opening is formed in the upper portion of the side wall of a primary feeding pipe, the blast device blows air towards a primary discharging opening from top to bottom through the wind guide opening, and straws which are conveyed to the primary discharging opening in a primary stirring feeder and are knotted are blown away.
2. The straw flow-assisting feeding device of the combustion boiler as claimed in claim 1, wherein the air blowing device is formed by a secondary air blower of the combustion boiler, a secondary air supply pipeline connecting the secondary air blower and the combustion boiler, and a connecting pipeline connecting the secondary air supply pipeline and an air guide opening.
3. The straw flow-assisting feeding device of the combustion boiler as claimed in claim 1, wherein the air blowing device is an air blower arranged at the air guide opening.
4. The straw flow-assisting feeding device of the combustion boiler as claimed in claim 1, 2 or 3, wherein in the axial direction of the primary feeding pipe, the air guide port is located between the primary feeding port and the primary discharging port, and the air blowing device blows air obliquely from top to bottom towards the primary discharging port through the air guide port.
5. The straw flow-assisting and feeding device of the combustion boiler as claimed in claim 1, 2 or 3, wherein the straw knotting-preventing and flow-assisting device further comprises a compressed air source and an air amplifier, the air amplifier is arranged on the upper portion of the side wall of the primary feeding pipe, one end of the air amplifier is located on the outer side of the primary feeding pipe to form an air inlet, the other end of the air amplifier is communicated with the inner cavity of the primary feeding pipe to form an air outlet, the inner cavity of the air amplifier forms the air guide opening, the air blowing device is connected with the air inlet, and the compressed air inlet of the air amplifier is connected with the compressed air source.
6. The straw flow-assisting feeding device of the combustion boiler as claimed in claim 5, wherein the air guide opening sequentially comprises a flow guiding cavity, a throat connecting cavity and an expansion cavity from an air inlet to an air outlet, the inner diameter of the flow guiding cavity is gradually reduced from the air inlet to the air outlet, the inner diameter of the expansion cavity is gradually increased from the air inlet to the air outlet, an annular airflow chamber is arranged in a side wall corresponding to the throat connecting cavity, the annular airflow chamber is connected with the throat connecting cavity through an annular nozzle, the annular nozzle is inclined towards the air outlet, and the compressed air inlet is communicated with the annular airflow chamber.
7. The straw flow-assisting feeding device of the combustion boiler as claimed in claim 1, 2 or 3, wherein the primary discharge port is arranged at an end of the primary feeding pipe, and the primary discharge port is arranged downward.
8. The straw flow-assisting feeding device of the combustion boiler as claimed in claim 1, 2 or 3, wherein the secondary discharge port is arranged at an end of the secondary feeding pipe, and the secondary discharge port is arranged downward.
9. The straw flow-assisting feeding device of the combustion boiler as claimed in claim 1, 2 or 3, wherein the primary mixer feeder is a screw feeder.
10. The straw flow-assisting feeding device of the combustion boiler as claimed in claim 1, 2 or 3, wherein the secondary mixer feeder is a screw feeder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021677181.9U CN213362532U (en) | 2020-08-12 | 2020-08-12 | Straw flow-assisting feeding device of combustion boiler |
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| CN202021677181.9U CN213362532U (en) | 2020-08-12 | 2020-08-12 | Straw flow-assisting feeding device of combustion boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112032757A (en) * | 2020-08-12 | 2020-12-04 | 杭州科晟能源技术有限公司 | Straw flow-assisting feeding device of combustion boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112032757A (en) * | 2020-08-12 | 2020-12-04 | 杭州科晟能源技术有限公司 | Straw flow-assisting feeding device of combustion boiler |
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