CN202532448U

CN202532448U - Solid-fuel fired boiler

Info

Publication number: CN202532448U
Application number: CN2012200983061U
Authority: CN
Inventors: 安相重; 张文基
Original assignee: Li Zhongqu
Current assignee: Li Zhongqu
Priority date: 2012-03-16
Filing date: 2012-03-16
Publication date: 2012-11-14
Anticipated expiration: 2022-03-16

Abstract

The utility model discloses a solid-fuel fired boiler. The solid-fuel fired boiler comprises a solid fuel storage tank, and a boiler provided with a heat exchange pipe, a combustion chamber, a spiral pusher and a flue. The solid-fuel fired boiler is characterized in that a fuel conveying pipe is connected between the solid fuel storage tank and the combustion chamber of the boiler, and a spiral feeder is arranged in the fuel conveying pipe; an oblique guide plate is arranged at the bottom in the storage tank; a bottom plate below a combustion zone is provided with a plurality of vents; an air supply chamber is arranged below the bottom plate, and one end of the air supply chamber is connected with a blower through a first external air supply pipe; an induced pipeline is arranged at the tail end of the spiral pusher, the induced pipeline is connected with an ash discharging pipeline along the right-angled direction, and a spiral ash discharger in the right-angled direction is arranged in the ash discharging pipeline; and an induced guide pipe is arranged inside the side wall of the combustion chamber, the induced guide pipe is connected with a second external air supply pipe, and the second external air supply pipe is connected with the blower. The solid-fuel fired boiler can realize quantitative supply of solid fuel, automatically cut off mobile combustion of flame towards the fuel conveying pipe in the combustion zone, ensure safe operation, automatically discharge ash when and after the solid fuel is combusted and eliminate inconvenience that operators must manually clean the ash; management and maintenance efficiency of the boiler is improved; and firepower of the combustion zone can be adjusted in real time, and the temperature of the boiler can be controlled as required.

Description

Solid fuel fired boiler

Technical field

The utility model belongs to a kind of warm braw, hot-water boiler, and is particularly a kind of to combustion zone weight feed solid particle fuel, improves the solid fuel fired boiler of efficiency of combustion simultaneously.

Background technology

Existing boiler uses diversified fuel, in order to realize simple operation and security of operation, the boiler of oil plant occurred using, also has a large amount of use of more convenient gas fired-boiler simultaneously.

But existing oil plant boiler and gas fired-boiler exist expense higher in the use, the deficiency that the thermal efficiency is lower, and the applicant has developed a kind of solid fuel fired boiler for this reason; This solid fuel fired boiler has kept the advantage of oil plant boiler and gas fired-boiler, but remains in certain deficiency: its solid fuel adopts charcoal, firewood; Coal, honeycomb briquette, coke; Wood substance grain etc.; Compare with liquids and gases fuel low ignition point, burning-point will remain on the higher burning-point during igniting always and just can light than higher.

Therefore, though the boiler that uses solid fuel has been applied on crop hothouse or the Industrial Boiler but still the difficulty that exists solid fuel weight feed and firepower to regulate, and the lower problem of the thermal efficiency.

In order to solve above-mentioned relevant issues; The weight feed solid fuel is to utilize the conveyer belt feeder; And maintain the gradient of certain slope, solid fuel is transported to the combustion chamber in storage tank, yet; For the solid fuel holding vessel that is provided with the conveyer belt feeder, must possess necessary big volume and could satisfy design demand.

In order to address the above problem; The patent No. is 20080032312 patented technology; Solved whole solid fuel holding vessel problem bigger than normal and the solid-fuelled problem of weight feed, and the adjusting problem of firepower, but the problem that exists is: the ashes obstruction combustion chamber passage that solid fuel produces with the burning back in the process of burning in the combustion zone; Even therefore increase solid-fuelled burning, also can not improve the thermal efficiency.

Therefore, in order to address this problem the technical scheme that Korean Patent provides for 10-2010-0081948 number; The ashes that produce with the burning back in the time of can be with solid fuel ignition, and the solid fuel of incomplete combustion removes automatically, air can be from the smooth and easy inflow of passage; Improved the thermal efficiency of burning to a certain extent; Both had the effect of reducing fuel, removed ashes and unburnt solid fuel simultaneously automatically, and made the operator alleviate labour intensity.But when solid fuel burnt in the combustion zone, flame moved burning from the combustion zone to solid fuel feed path direction sometimes, and safe operation is threatened.The adjusting of firepower does not still have fine solution when burning simultaneously.

Summary of the invention

The purpose of the utility model is in order to address the above problem, and when realizing the solid fuel weight feed, the flame that can cut off automatically moves burning to fuel transfer tube direction the combustion zone in, and the assurance boiler can safe operation.The ashes that produce with the burning back in the time of simultaneously in the combustion chamber, discharging solid fuel ignition automatically, and the solid fuel of incomplete combustion have solved the inconvenience that operating personnel must manually remove ashes.Improve the management and the maintenance efficient of boiler.In addition, firepower that can the real-time regulated combustion zone is controlled the temperature of boiler as required.

The solid fuel fired boiler that the utility model provides; Comprise the solid fuel holding vessel; Be provided with the boiler of heat-exchange tube, combustion chamber, screw feeder and flue; It is characterized in that: between the combustion chamber of solid fuel holding vessel and boiler, connect fuel-supply pipe, scroll feeder is set in fuel-supply pipe; The guide plate of inclination is set in the holding vessel inner bottom; Several air vents are set on the base plate below the combustion zone; Plenum chamber is set below the base plate, and plenum chamber one end connects pressure fan through the first extraneous air supply pipe; Induce pipeline in the setting of screw feeder tail end, induce pipeline to connect the ash discharge pipeline, the spiral ash ejector of right angle orientation is set in the ash discharge pipeline along right angle orientation; In the side wall of combustion chamber inboard induction type conduit is set, the induction type conduit connects the second extraneous air supply pipe, and the second extraneous air supply pipe connects pressure fan.

The inner end of above-mentioned flue is arranged on upper boiler, and to the bottom, the lower bank mouth is provided with water pot outward to flue through the boiler inboard, and water pot connects outside flue.

The effect of the utility model: can realize solid-fuelled weight feed; The flame that can cut off automatically in the combustion zone simultaneously moves burning to fuel transfer tube direction; Guarantee security of operation; The ashes that produce with the burning back in the time of discharging solid fuel ignition automatically, and the solid fuel of incomplete combustion have solved the inconvenience that operating personnel must manually remove ashes; The management and the maintenance efficient of boiler have been improved; In addition, firepower that can the real-time regulated combustion zone is controlled the temperature of boiler as required.

Description of drawings

Fig. 1 is the surface structure sketch map of the utility model.

Fig. 2 is the warm braw boiler example structure cutaway view of the utility model.

Fig. 3 is the A portion enlarged drawing of Fig. 2.

Fig. 4 is the boiler side sectional drawing of Fig. 2.

Fig. 5 be the utility model in the combustion zone fuel carry out completing combustion is discharged organigram (stereogram) from lime-ash to the outside.

Fig. 6 is the hot-water boiler example structure cutaway view of the utility model.

Fig. 7 is the boiler side sectional drawing of Fig. 6.

Component serial number among the figure: solid fuel jar 100, lid 101, fuel-supply pipe 110, motor 111, scroll feeder 112, the first air supply pipes 120; Second air supply pipe 130, guide plate 140, outlet 141, boiler 200, combustion chamber 210; Burner 220, air vent 221, conduit 222, motor 223, screw feeder 224; Induce pipeline 225, ash discharge pipeline 226, spiral ash ejector 227, plenum chamber 230, heat-exchange tube 300; Flue 400, outside flue 410, water pot 420, blower fan F, air curtain M.

The specific embodiment

See Fig. 1-7, it is the boiler of thermal source that the present invention provides with the solid fuel, and through solid-fuelled combusting firepower in the solid-fuelled weight feed control combustion chamber.The solid fuel that boiler provided by the invention uses is selected wood substance grain for use.

In concrete structure, Fig. 2 and Fig. 6 illustrate the embodiment of warm braw boiler and the embodiment of hot-water boiler respectively.Mainly textural in the present invention, the warm braw boiler is identical with hot-water boiler.

The concrete structure of the utility model is following:

Be provided with solid fuel holding vessel 100, the lid 101 that can upwards open or close is set in solid fuel holding vessel 100 upper ends.The guide plate 140 and outlet 141 of inclination are set in solid fuel holding vessel inner bottom, after solid fuel is dropped into, freely carry along the guide plate inclined plane; Be provided with boiler 200; Heat-exchange tube 300 and combustion chamber 210 are set in the boiler 200; Between the combustion chamber 210 of solid fuel holding vessel 100 and boiler, connect fuel-supply pipe 110, swinging scroll feeder 112 is set in fuel-supply pipe 110, scroll feeder 112 motor 111 that is in transmission connection; Solid fuel advances through scroll feeder 112, flows to burner 220 continuously uniformly, thereby realizes to combustion zone weight feed fuel.

Screw feeder 224 is housed, screw feeder 224 motor 223 that is in transmission connection in burner 220.On the base plate several air vents 221 are set below the burner 220; Plenum chamber 230 is set below the base plate, and plenum chamber 230 1 ends connect blower fan F through the first extraneous air supply pipe 120; Wind outside flows into burner from burner 220 bottoms; The solid fuel of burner 220 is fully burnt.

Inside sidewalls at burner 220 is provided with induction type conduit 222, and induction type conduit 222 connects the second extraneous air supply pipe, 130, the second extraneous air supply pipes 130 and connects blower fan.Wind outside flows into from the side of burner 220; Discharge from the inside upper part of burner 220 1 sides; The extraneous air that flows into space between fuel-supply pipe 110 ends and combustion zone forms air curtain M upwards, cuts off carrying out physics between the end of fuel transfer tube 110 and the combustion zone.Stoped the flame of combustion zone to move burning, prevented the generation of security incident, guaranteed security of operation to fuel-supply pipe 110 ends.

Induce pipeline 225 in screw feeder 224 tail end settings, induce pipeline 225 to connect ash discharge pipeline 226, the spiral ash ejector 227 of right angle orientation is set in the ash discharge pipeline 226, spiral ash ejector 227 motor that is in transmission connection along right angle orientation.The ashes of completing combustion are discharged ash discharge pipeline 226 through inducing pipeline 225 through spiral ash ejector 227.Realize that the ashes that produce after the completing combustion can be from the outside discharge of trend boiler.

The inner end of flue 400 is arranged on upper boiler, and to the bottom, like this, flue 400 length in boiler increases flue 400, and waste heat in the flue is utilized once more through the boiler inboard.Flue 400 lower bank mouths are provided with water pot 420 outward, and water pot 420 connects outside flue 410.The burning gases that burnt have comprised various foreign bodys and dust, filter through water pot 420 and discharge outside flue 410, have reduced atmosphere pollution significantly.

Each fuel-supply pipe 110 1 end connects motor 111 separately, therefore can selectively drive.Thereby reach effective adjusting of heat supply efficiency.Like the working order of operating personnel according to boiler 200, promptly come to confirm the combustion case of solid-fuelled quantity delivered and combustion chamber on the whole, whether decision will heat and definite heating temperature etc.Equally, according to the different situations of combustion zone burning, operating personnel can regulate and select firepower.When not needing more firepower, regulate and improve heating efficient.Realize the raising of the thrifty and thermal efficiency of fuel cost.

Claims

1. solid fuel fired boiler; It comprises the solid fuel holding vessel; Be provided with the boiler of heat-exchange tube, combustion chamber, screw feeder and flue, it is characterized in that: between the combustion chamber of solid fuel holding vessel and boiler, connect fuel-supply pipe, scroll feeder is set in fuel-supply pipe; The guide plate of inclination is set in the holding vessel inner bottom; Several air vents are set on the base plate below the combustion zone; Plenum chamber is set below the base plate, and plenum chamber one end connects pressure fan through the first extraneous air supply pipe; Induce pipeline in the setting of screw feeder tail end, induce pipeline to connect the ash discharge pipeline, the spiral ash ejector of right angle orientation is set in the ash discharge pipeline along right angle orientation; In the side wall of combustion chamber inboard induction type conduit is set, the induction type conduit connects the second extraneous air supply pipe, and the second extraneous air supply pipe connects pressure fan.

2. solid fuel fired boiler according to claim 1 is characterized in that: the inner end of flue is arranged on upper boiler, and to the bottom, the lower bank mouth is provided with water pot outward to flue through the boiler inboard, and water pot connects outside flue.