CN104373923A - Multi-return-stroke heat-exchanging type biomass boiler - Google Patents
Multi-return-stroke heat-exchanging type biomass boiler Download PDFInfo
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- CN104373923A CN104373923A CN201410648974.0A CN201410648974A CN104373923A CN 104373923 A CN104373923 A CN 104373923A CN 201410648974 A CN201410648974 A CN 201410648974A CN 104373923 A CN104373923 A CN 104373923A
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Abstract
The invention discloses a multi-return-stroke heat-exchanging type biomass boiler. The biomass boiler comprises a boiler body and an air blowing and inducing system, and is characterized in that the boiler body comprises a feeder, a double-combustion-chamber mechanism, a multi-return-stroke densely distributed water pipe boiler furnace, a smoke exhausting pipe, a water tank arranged outside the double-combustion-chamber mechanism and the boiler furnace, and a thermal insulation layer arranged on the exterior of the water tank. The inlet of the double-combustion-chamber mechanism is connected with the feeder and an air blower, and the outlet of the double-combustion-chamber mechanism is connected with the inlet of the boiler furnace. The outlet of the boiler furnace is connected with the smoke exhausting pipe and an induced draft fan. The multi-return-stoke heat-exchanging type biomass boiler is high in heat efficiency, safe, reliable, convenient to install and small in occupied area.
Description
Technical field
The invention belongs to field of boilers, particularly one many back-stroke heat-exchange types biomass boiler.
Background technology
The use of existing biomass boiler because of biomass fuel even thickness, easily start to exchange fire, burning time is fast, dust is light after burning feature, generally can be divided into: charging system, forced draft induced draft system, boiler combustion system and dust pelletizing system, because the sorts of systems division of labor is distinct, each system equipment is relatively independent, therefore to there is occupation area of equipment unavoidably wide for existing biomass boiler, installing trouble, the equipment multichannel path length that heat energy flows through, there is the drawback of waste in heat energy utilization.
And existing boiler flue is vertical setting mostly, the miniature boiler that people use now is generally vertical water-tube or multitubular boiler, the factors such as flue space and flue resistance govern the arrangement of pipe, therefore the thermal efficiency of miniature boiler is always well below large-sized boiler and horizontal boiler.Catering trade and individual workship of family need arcola, but they want that little, the upper vapour of cube is fast, the thermal efficiency is high, and current small-sized biomass boiler is difficult to the requirement meeting them.The water pipe density arranged in existing boiler furnace flue is low is that because if close flue dust falls within above water pipe easily block boiler, in practical application, the low-density water pipe thermal efficiency is lower.
Summary of the invention
The object of this invention is to provide a kind of thermal efficiency high and safe and reliable, easy for installation, many back-stroke heat-exchange types biomass boiler that floor space is little.
In order to reach above object, the technical solution used in the present invention is: a kind of many back-stroke heat-exchange types biomass boiler, this device comprises boiler body and forced draft induced draft system, described boiler body comprise charger, twin furnace mechanism, be provided with many backhauls gather water pipe internal furnace, smoke exhaust pipe, be arranged on twin furnace mechanism, flue outside water tank, be arranged on the heat-insulation layer of water tank outside; The entrance of described twin furnace mechanism is connected with charger, air blast, and the outlet of twin furnace mechanism is connected with the entrance of flue; The outlet of described flue is connected with smoke exhaust pipe, air-introduced machine.
Described charger comprises feed hopper, packing auger propeller, shaft coupling, discharging opening; Be provided with packing auger propeller below described feed hopper, one end of packing auger propeller is connected with shaft coupling, and the other end of packing auger propeller is connected with discharging opening; Described packing auger propeller comprises flight, d-axis; Described flight is arranged on the d-axis above discharging opening, and described flight starting point is below feed hopper, and described flight terminal is discharging opening position.
Described twin furnace mechanism comprises grate, charge combustion shares room, flame compressional zone, FLAME district; Described grate is arranged on the below that charge combustion shares room; Described charge combustion shares room and is connected with flame compressional zone, and flame compressional zone is connected with FLAME district; Described charge combustion shares room and FLAME district and is provided with observation panel fire door.
Described grate comprises water inlet, bulk material plate, grate pipeline, bellows, delivery port; Described grate pipeline is bent, is layed on bellows, unilaterally connected between grate pipeline; Described grate conduit upper bending segment is provided with bulk material plate; The arrival end of described grate pipeline connects water inlet, and the port of export of grate pipeline connects delivery port.
Described grate pipeline includes bottom bending segment, in the middle part of bending segment, bending segment top; The bending segment top of grate pipeline and the inclination angle of horizontal plane are 45 °-60 °, are 30 °-45 ° with the inclination angle of horizontal plane in the middle part of bending segment, are 0 °-10 ° with the inclination angle of horizontal plane bottom bending segment; Described bulk material plate and the inclination angle of horizontal plane are 50 °-60 °, and the inclination angle of bulk material plate and horizontal plane is greater than the inclination angle of bending segment top and horizontal plane.
Described grate cross-section of pipeline is trapezoidal, and towards being trapezoidal broadside above, court is trapezoidal narrow limit below.
Described flue comprises the first heat transfer zone, the second heat transfer zone, the 3rd heat transfer zone, the 4th heat transfer zone, smoke exhaust pipe; Water pipe is provided with in the first described heat transfer zone, the second heat transfer zone, the 3rd heat transfer zone, the 4th heat transfer zone; The smoke inlet of described first heat transfer zone is connected with boiler furnace; The exhanst gas outlet of described first heat transfer zone is connected with the smoke inlet of the second heat transfer zone; The exhanst gas outlet of described second heat transfer zone is connected with the smoke inlet of the 3rd heat transfer zone; The exhanst gas outlet of described 3rd heat transfer zone is connected with the smoke inlet of the 4th heat transfer zone; The exhanst gas outlet of described 4th heat transfer zone is connected with smoke exhaust pipe; The plate pulling device for removing cigarette ash on water pipe is provided with in described first heat transfer zone, the second heat transfer zone, the 3rd heat transfer zone, the 4th heat transfer zone; Described plate pulling device is made up of pull bar and ash-removing plate; Be provided with below the smoke inlet of described first heat transfer zone and connect slag box, the exhanst gas outlet of described second heat transfer zone and the smoke inlet junction of the 3rd heat transfer zone are provided with and connect slag box; A smoke abatement water tank is provided with between the exhanst gas outlet of the 4th described heat transfer zone and smoke exhaust pipe.
Described water pipe arrangement is spatial intersecting arrangement, and described spatial intersecting arrangement is that the axes normal direction of adjacent water pipe does not overlap.
Water pipe density in the first described heat transfer zone, the second heat transfer zone, the 3rd heat transfer zone, the 4th heat transfer zone is in rising successively; Water pipe diameter in the first described heat transfer zone, the second heat transfer zone, the 3rd heat transfer zone, the 4th heat transfer zone is in declining successively.
Described twin furnace mechanism is provided with observation panel fire door; Described water tank is provided with cold water inlet and hot water outlet pipe.
The invention has the beneficial effects as follows: (1) compact conformation of the present invention, easy for installation, floor space is little, combustion chamber is combined with charging zone and forms charge combustion and share room by the present invention, and charger is longitudinally arranged in the top of this shared room, reduces the floor space of whole boiler while simplifying boiler structure.
(2) the packing auger propeller feeding of charger of the present invention replaces original biomass material to rotate feeding to expecting mouth by axle extruding, and avoid major axis extruding feeding and easily get stuck, even the situation of card off-axis occurs.Feeding mechanism is the energy-conservation feeding device of a kind of ultrashort light load, and after fuel enters propellant bottle, flood dragon is advanced into discharging opening position, and because above discharging opening, main shaft does not have flight, biomass material is pushed to discharging opening nature, evenly falls down.
(3) flue of the present invention comprises double-furnace structure, flue, water tank and heat-insulation layer, double-furnace structure adds passage of flame, can realize realizing Thorough combustion to living beings, and flue is multi-return-stroke type structure, add water tank and double-furnace structure, the contact area of flue, improve the organic efficiency of heat, and in flue, be provided with multiple water pipe, thermal-flame is from top to bottom, complications are passed through multiple backhaul and are touched the bottom from top to bottom, the solid dust of flame when crossing flue in thermal-flame gas is blocked in above this densely covered water pipe, this not only can effective dust in recovered flue gas, reach the effect of one-time dedusting, effectively can also absorb the heat that smoke combustion produces, and heat-insulation layer well ensures not scattered and disappeared of heat, thus improve the thermal efficiency of flue, reduce heat loss.
(4) flue of the present invention comprises four heat transfer zone, the volume of four heat transfer zone is the forms in successively decreasing gradually, due to the form that heat is also in reducing gradually, flue gas can be gradually reduced so volume is little, improve the heat of its unit are, and the density of heat transfer zone inner conduit also increases gradually, improve the contact area of water pipe and flue gas, thus substantially increase the heat recovery efficiency of flue gas.
(5) flue of the present invention is provided with special deashing plate pulling device, one, this device is provided with pull bar and stretches out outside boiler, as long as the flue dust of inner bag every nook and cranny and the dust attached on water pipe can be removed totally as new by pull unit, therefore the object of one-time dedusting is reached, improve the thermal efficiency of biomass boiler simultaneously, reach environment protecting again.
(6) the present invention is provided with Multi-stage dust removing device, the many return structures of flue of this device and water pipe arrange and can carry out one-time dedusting to flue gas, and establish one to connect slag box below each backhaul tail end of flue, connect the tank that slag box is dress water, water adsorbs remaining flue dust and carries out final dusting, just can reach good dust removing effects, and smoke exhaust pipe porch is provided with smoke abatement water tank, effectively can carry out third time dedusting to flue flue dust, thus reduce discharge flue gas to the impact of environment.
(7) grate of the present invention adopts backrest type structure, and namely grate adopts ramp type design, and upper front end is provided with bulk material plate, is conducive to sub-material and the bulk cargo of biomass fuel; Due to the relatively uniform sub-material of fuel, so be conducive to the Thorough combustion of fuel.
(8) grate of the present invention adopts the grate pipeline be interconnected, and grate pipeline is connected with boiler recirculated water, effectively absorb the heat energy on grate pipeline, thus make grate not easy burn-out, be conducive to effective utilization of heat on grate pipeline simultaneously, extend the useful life of grate, and can heat energy be made full use of, improve energy utilization rate, energy-conserving and environment-protective.
(9) trapezoidal design of grate pipeline of the present invention, towards being trapezoidal broadside, towards being trapezoidal narrow limit, being conducive to the convection current of air below above, improving combustion rate.
(10) because the water-band in grate pipeline of the present invention has walked a large amount of heats, more than 80 DEG C, because steel can bear the temperature of more than 800 DEG C, can not there is not the phenomenon burning out grate and occur in the water temperature of grate pipe surface.
(11) the present invention is provided with and multiplely gets ash bin and observation panel fire door, effectively cigarette ash can be cleared up, keep the combustion quality of boiler, can also be observed burner hearth by observation panel at any time, the combustion case of timely understanding boiler, ensures boiler operatiopn safety and operational efficiency.
Accompanying drawing explanation
Fig. 1 is the main cross-sectional schematic of structure of the present invention.
Fig. 2 is front view of the present invention.
Fig. 3 is the schematic diagram that the present invention is provided with deashing plate pulling device.
Fig. 4 is water pipe spatial intersecting arrangement schematic diagram.
Fig. 5 is the structural representation of charger.
Fig. 6 is the structural representation of grate.
Fig. 7 is the front view of grate.
Fig. 8 is the structure sectional view of grate pipeline.
Numerical reference described in Figure of description is expressed as: 1, charger; 2, grate; 3, charge combustion shares room; 4, flame compressional zone; 5, FLAME district; 6, smoke abatement water tank; 7, slag box is connect; 8, air-introduced machine; 9, smoke exhaust pipe; 10, the first heat transfer zone; 11, flue; 12, the second heat transfer zone; 13, the 3rd heat transfer zone; 14, heat-insulation layer; 15, water pipe; 16, water tank; 17, the 4th heat transfer zone; 18, plate pulling device; 19, observation panel fire door; 20, air blast; 21, cold water inlet; 22, hot water outlet pipe; 101, feed hopper; 102, packing auger propeller; 104, discharging opening; 103, shaft coupling; 1021, rotating shaft; 1022, flight; 201, water inlet; 202, bulk material plate; 203, grate pipeline; 204, bellows; 205, delivery port.
Detailed description of the invention
In order to make those skilled in the art understand technical scheme of the present invention better, describe the present invention below in conjunction with accompanying drawing, the description of this part is only exemplary and explanatory, should not have any restriction to protection scope of the present invention.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, a kind of many back-stroke heat-exchange types biomass boiler, this device comprises boiler body and forced draft induced draft system, described boiler body comprise charger 1, twin furnace mechanism, be provided with many backhauls gather water pipe internal furnace 11, smoke exhaust pipe 9, be arranged on twin furnace mechanism, flue outside water tank 16, be arranged on the heat-insulation layer 14 of water tank outside.The entrance of twin furnace mechanism is connected with charger 1, air blast 20, and the outlet of twin furnace mechanism is connected with the entrance of flue 11, and the outlet of flue 11 is connected with smoke exhaust pipe 9, air-introduced machine 8.
Referring to Fig. 5, under better performance, charger comprises feed hopper 101, packing auger propeller 102, shaft coupling 103, discharging opening 104, packing auger propeller 102 is provided with below feed hopper 101, one end of packing auger propeller 102 is connected with shaft coupling 103, the other end of packing auger propeller 102 is connected with discharging opening 104, packing auger propeller 102 comprises flight 1021, d-axis 1022, flight 1021 is arranged on the d-axis 1022 above discharging opening 104, flight 1021 starting point is below feed hopper 101, and flight 1021 terminal is discharging opening 104 position.
Referring to Fig. 6, Fig. 7, Fig. 8, under better performance, twin furnace mechanism comprises grate 2, charge combustion shares room 3, flame compressional zone 4, FLAME district 5.Grate 2 is arranged on the below that charge combustion shares room 3, and charge combustion shares room 3 and is connected with flame compressional zone 4, and flame compressional zone 4 is connected with FLAME district 5, and charge combustion shares room 3 and FLAME district 5 and is provided with observation panel fire door 19.
Under better performance, grate 2 comprises water inlet 201, bulk material plate 202, grate pipeline 203, bellows 204, delivery port 205.Grate pipeline 203 is in bent, be layed on bellows 204, unilaterally connected between grate pipeline 203, grate pipeline 203 top bending segment is provided with bulk material plate 202, the arrival end of grate pipeline 203 connects water inlet 205, and the port of export of grate pipeline 203 connects delivery port 205.
Grate pipeline 203 includes bottom bending segment, in the middle part of bending segment, bending segment top, the bending segment top of grate pipeline and the inclination angle of horizontal plane are 45 °-60 °, it is 30 °-45 ° with the inclination angle of horizontal plane in the middle part of bending segment, it is 0 °-10 ° with the inclination angle of horizontal plane bottom bending segment, bulk material plate 202 is 50 °-60 ° with the inclination angle of horizontal plane, and bulk material plate 202 is greater than the inclination angle of bending segment top and horizontal plane with the inclination angle of horizontal plane.Grate pipeline 203 cross section is trapezoidal, and towards being trapezoidal broadside above, court is trapezoidal narrow limit below.
Under better performance, flue 11 comprises the first heat transfer zone 10, second heat transfer zone 12, 3rd heat transfer zone 13, 4th heat transfer zone 17, smoke exhaust pipe 9, first heat transfer zone 10, second heat transfer zone 12, 3rd heat transfer zone 13, water pipe is provided with in 4th heat transfer zone 17, the smoke inlet of the first heat transfer zone 10 is connected with boiler furnace, the exhanst gas outlet of the first heat transfer zone 10 is connected with the smoke inlet of the second heat transfer zone 12, the exhanst gas outlet of the second heat transfer zone 12 is connected with the smoke inlet of the 3rd heat transfer zone 13, the exhanst gas outlet of the 3rd heat transfer zone 13 is connected with the smoke inlet of the 4th heat transfer zone 17, the exhanst gas outlet of the 4th heat transfer zone 17 is connected with smoke exhaust pipe 9, first heat transfer zone 10, second heat transfer zone 12, 3rd heat transfer zone 13, the plate pulling device 18 for removing cigarette ash on water pipe is provided with in 4th heat transfer zone 17, plate pulling device 18 is made up of pull bar and ash-removing plate.
Under better performance, be provided with below the smoke inlet of the first heat transfer zone 10 and connect slag box 7, the exhanst gas outlet of the second heat transfer zone 12 and the smoke inlet junction of the 3rd heat transfer zone 13 be provided with connect slag box the 7, four heat transfer zone 17 be provided with a smoke abatement water tank 6 between exhanst gas outlet and smoke exhaust pipe 9.
Under better performance, water pipe 15 arrangement is spatial intersecting arrangement, and spatial intersecting arrangement is that the axes normal direction of adjacent water pipe does not overlap.
Under better performance, water pipe density in first heat transfer zone 12, heat transfer zone 10, second, the 3rd heat transfer zone 13, the 4th heat transfer zone 17 is in rising successively, and water pipe 15 diameter in the first heat transfer zone 12, heat transfer zone 10, second, the 3rd heat transfer zone 13, the 4th heat transfer zone 17 is in declining successively.
Under better performance, twin furnace mechanism is provided with observation panel fire door 19, water tank is provided with cold water inlet 21 and hot water outlet pipe 22.
In concrete operations, living beings are pushed to discharging opening 104 by flight 1021 from feed hopper 101 stirring, enter charge combustion to share room 3 and burn, charge combustion shares room 3 for cambered design, flame export is positioned at below arc, form flame compressional zone 4, because cambered design makes flame compress back half gasification, and combustion downwards, then enter FLAME district 5; Burning generation flue gas enters flue 11 and carries out heat-exchange dedusting, flue gas is successively through the first heat transfer zone 12, heat transfer zone 10, second, the 3rd heat transfer zone 13, the 4th heat transfer zone 17, internal face due to flue 11 is concaveconvex shape, and flue 11 is many return structures of snakelike shape and Qi Nei is provided with many water pipes 15, thus increase the contact area of flue 11 and water in water tank 16, water pipe 15, improve heat exchange efficiency, also improve the area of the collision of flue gas and flue, reach the effect of one-time dedusting, the dust in flue gas, lime-ash fall to and connect in slag box 7 below flue; Flue gas, when arriving smoke exhaust pipe 9 through too much backhaul boiler tube, is got rid of through smoke abatement water tank 6 dedusting.
After a period of time is carried out in boiler combustion, pull plate pulling device 18 pairs of flue 11 inner conduits 15 to carry out deashing process, ensure boiler combustion, normally the carrying out of heat exchange.
It should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise which key element, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.
Apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above example just understands method of the present invention and core concept thereof for helping.The above is only the preferred embodiment of the present invention, should be understood that, due to the finiteness of literal expression, and objectively there is unlimited concrete structure, for those skilled in the art, under the premise without departing from the principles of the invention, some improvement, retouching or change can also be made, also above-mentioned technical characteristic can be combined by rights; These improve retouching, change or combination, or the design of invention and technical scheme are directly applied to other occasion without improving, and all should be considered as protection scope of the present invention.
Claims (10)
1. the biomass boiler of back-stroke heat-exchange type more than, is characterized in that this device comprises boiler body and forced draft induced draft system; Described boiler body comprise charger, twin furnace mechanism, be provided with many backhauls gather water pipe internal furnace, smoke exhaust pipe, be arranged on twin furnace mechanism, flue outside water tank, be arranged on the heat-insulation layer of water tank outside; The entrance of described twin furnace mechanism is connected with charger, air blast, and the outlet of twin furnace mechanism is connected with the entrance of flue; The outlet of described flue is connected with smoke exhaust pipe, air-introduced machine.
2. one many back-stroke heat-exchange types biomass boiler according to claim 1, it is characterized in that, described charger comprises feed hopper, packing auger propeller, shaft coupling, discharging opening; Be provided with packing auger propeller below described feed hopper, one end of packing auger propeller is connected with shaft coupling, and the other end of packing auger propeller is connected with discharging opening; Described packing auger propeller comprises flight, d-axis; Described flight is arranged on the d-axis above discharging opening, and described flight starting point is below feed hopper, and described flight terminal is discharging opening position.
3. one many back-stroke heat-exchange types biomass boiler according to claim 1, is characterized in that, described twin furnace mechanism comprises grate, charge combustion shares room, flame compressional zone, FLAME district; Described grate is arranged on the below that charge combustion shares room; Described charge combustion shares room and is connected with flame compressional zone, and flame compressional zone is connected with FLAME district, and the channel space of flame compressional zone is less than the channel space that charge combustion shares room and FLAME district; Described charge combustion shares room and FLAME district and is provided with observation panel fire door.
4. one many back-stroke heat-exchange types biomass boiler according to claim 2, is characterized in that, described grate comprises water inlet, bulk material plate, grate pipeline, bellows, delivery port; Described grate pipeline is bent, is layed on bellows, unilaterally connected between grate pipeline; Described grate conduit upper bending segment is provided with bulk material plate; The arrival end of described grate pipeline connects water inlet, and the port of export of grate pipeline connects delivery port.
5. the hollow grate of a kind of backrest type biomass boiler according to claim 4, is characterized in that described grate pipeline includes bottom bending segment, in the middle part of bending segment, bending segment top; The bending segment top of grate pipeline and the inclination angle of horizontal plane are 45 °-60 °, are 30 °-45 ° with the inclination angle of horizontal plane in the middle part of bending segment, are 0 °-10 ° with the inclination angle of horizontal plane bottom bending segment; Described bulk material plate and the inclination angle of horizontal plane are 50 °-60 °, and the inclination angle of bulk material plate and horizontal plane is greater than the inclination angle of bending segment top and horizontal plane.
6. the hollow grate of a kind of backrest type biomass boiler according to claim 4 or 5, is characterized in that described grate cross-section of pipeline is trapezoidal, and towards being trapezoidal broadside above, court is trapezoidal narrow limit below.
7. one many back-stroke heat-exchange types biomass boiler according to claim 1, is characterized in that, described flue comprises the first heat transfer zone, the second heat transfer zone, the 3rd heat transfer zone, the 4th heat transfer zone, smoke exhaust pipe; Water pipe is provided with in the first described heat transfer zone, the second heat transfer zone, the 3rd heat transfer zone, the 4th heat transfer zone; The smoke inlet of described first heat transfer zone is connected with boiler furnace; The exhanst gas outlet of described first heat transfer zone is connected with the smoke inlet of the second heat transfer zone; The exhanst gas outlet of described second heat transfer zone is connected with the smoke inlet of the 3rd heat transfer zone; The exhanst gas outlet of described 3rd heat transfer zone is connected with the smoke inlet of the 4th heat transfer zone; The exhanst gas outlet of described 4th heat transfer zone is connected with smoke exhaust pipe; The plate pulling device for removing cigarette ash on water pipe is provided with in described first heat transfer zone, the second heat transfer zone, the 3rd heat transfer zone, the 4th heat transfer zone; Described plate pulling device is made up of pull bar and ash-removing plate; Be provided with below the smoke inlet of described first heat transfer zone and connect slag box, the exhanst gas outlet of described second heat transfer zone and the smoke inlet junction of the 3rd heat transfer zone are provided with and connect slag box; A smoke abatement water tank is provided with between the exhanst gas outlet of the 4th described heat transfer zone and smoke exhaust pipe.
8. the flue of a kind of biomass boiler according to claim 7, is characterized in that described water pipe arrangement is spatial intersecting arrangement, and described spatial intersecting arrangement is that the axes normal direction of adjacent water pipe does not overlap.
9. the flue of a kind of biomass boiler according to claim 8, is characterized in that the water pipe density in the first described heat transfer zone, the second heat transfer zone, the 3rd heat transfer zone, the 4th heat transfer zone is rise successively; Water pipe diameter in the first described heat transfer zone, the second heat transfer zone, the 3rd heat transfer zone, the 4th heat transfer zone is in declining successively.
10. the flue of a kind of biomass boiler according to claim 1, is characterized in that, described twin furnace mechanism is provided with observation panel fire door; Described water tank is provided with cold water inlet and hot water outlet pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410648974.0A CN104373923B (en) | 2014-11-17 | 2014-11-17 | Many back-stroke heat-exchange types biomass boiler |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410648974.0A CN104373923B (en) | 2014-11-17 | 2014-11-17 | Many back-stroke heat-exchange types biomass boiler |
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| CN104373923A true CN104373923A (en) | 2015-02-25 |
| CN104373923B CN104373923B (en) | 2016-08-17 |
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| CN201410648974.0A Active CN104373923B (en) | 2014-11-17 | 2014-11-17 | Many back-stroke heat-exchange types biomass boiler |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109429907A (en) * | 2018-11-27 | 2019-03-08 | 庆元县菇星节能机械有限公司 | Automatic mushroom, the energy-efficient fermentation special machine of straw mushroom canopy |
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| CN201483796U (en) * | 2009-06-12 | 2010-05-26 | 武光川 | Auger horizontal-feeding pressurizing device for double-roller ball press |
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| CN104373923B (en) | 2016-08-17 |
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