CN2816620Y - Small coal-gasifying coal-burning boiler - Google Patents

Abstract

The utility model discloses a boiler, particularly a small coal gasifying coal burning boiler. The utility model comprises an internal container [1] that is positioned at the internal side of an outer shell of a boiler body, wherein the internal side of the internal container [1] is provided with a hearth [27]. Hearth pipes [2] are arranged above the hearth [27], and are communicated with the internal chamber of the internal container [1]. A burning chamber [3] is arranged below the hearth [27], and the side face of the hearth is provided with a boiler door [13]. A grate [9] is arranged below the boiler door, and the side face of the lower part of the grate [9] is provided with an ash outlet [10] and a draught fan joint [17]. The side face of the lower part of the internal container [1] is provided with a backwater opening [8], and a hot water outlet [21] and a smoke exhausting opening [20] are arranged above the internal container [1]. The middle position of the hearth pipes [2] above the hearth [27] is provided with a flame blocking element [22] that is provided with a through hole [23]. The utility model is characterized in that the periphery above the flame blocking element [22] is provided with a fire blocking lug boss [7] and an air outlet [14] that is communicated with the draught fan joint [17]. The utility model has the advantages of energy saving, complete combustion, high heating efficiency and little dust discharge, and reduces pollution for atmosphere.

Description

Small-sized coal gasification coal-burning boiler

Technical field:

The utility model relates to a kind of boiler, particularly a kind of small-sized coal gasification coal-burning boiler.

Background technology:

Existing miniature boiler is widely used, and is mainly used in heat supply heating, the especially coal-burning boiler of family or small business, because its cost is low, easy to operate, good management is subjected to big multi-user's favorable comment.Its structure of existing small scall coal-fired boiler is: by an inner bag of being made up of lateral wall and madial wall, in the outside of inner bag the body of heater shell is arranged, the body of heater shell is made by metallic plate and insulation material.The inboard of inner bag is a burner hearth, and the top of burner hearth is arranged with furnace tube, and furnace tube is communicated with the inner chamber of inner bag.The below of burner hearth is the combustion chamber, and there is fire door the side of combustion chamber, and fire grate is arranged below, and there are ash hole and fan interface in the side, below of fire grate.Be connected to water return outlet below inner bag, the top is connected to hot water outlet and exhaust opening.Inner bag also is connected to control instrument and parts such as Pressure gauge, thermometer, pressure-reducing valve.During use, water return outlet, hot water outlet all with thermic devices (as radiator) join, inner bag also joins with water supply installation (water tank or water supply pipe), with fire coal fire grate top in fire door is sent into the combustion chamber, upwards ascension of the heat that is produced behind the fired coal combustion (comprising flame, high-temperature flue gas etc.), water heating with furnace tube and inner bag inboard, and deliver to through hot water outlet and to use thermic devices, again through dispelling the heat with thermic devices, cooled water enters furnace tube and interior gallbladder intracavity is heated once more through water return outlet, circulate with this, constitute the heat supply circulatory system.It is in order to control moisturizing in system by valve that inner bag and water supply installation join.This design of mini coal-burning boiler has following shortcoming: the thermal efficiency is low, because the heat that the produces ascension speed that makes progress is fast in the combustion chamber, discharge out of the furnace very soon from exhaust opening, in stove especially above furnace tube place and inner bag the time of staying short, a large amount of heat is not able to do in time to be absorbed by the water in furnace tube and the inner bag, therefore, the boiler energy consumption is big, the thermal efficiency is not high, in discharging the flue gas process, a large amount of clean-burning fuel particles that do not have is discharged out of the furnace simultaneously, both waste the energy, discharged a large amount of dust to atmosphere again, caused environmental pollution.In order to address the above problem, the centre position, furnace tube place above burner hearth that has is provided with flame block piece with holes, be used to prevent that flame and hot flue gas from discharging out of the furnace fast, but effect is unsatisfactory, some fray-out of flame when reason is flame process flame block piece, directly discharge out of the furnace after becoming coal gas, exist energy consumption big equally, the thermal efficiency is not high, causes the defect of environmental pollution.

Summary of the invention:

The purpose of this utility model provides the small-sized coal gasification coal-burning boiler of a kind of thermal efficiency height, the saving energy, the discharging that reduces dust, reduction environmental pollution, overcomes the deficiencies in the prior art.

Technical solution of the present utility model is: a kind of small-sized coal gasification coal-burning boiler, it comprises the inner bag 1 that is positioned at body of heater shell inboard, the inboard of inner bag 1 is a burner hearth 27, above burner hearth 27, be arranged with furnace tube 2, furnace tube 2 is communicated with the inner chamber of inner bag 1, combustion chamber 3 is established in the below of burner hearth 27, the side is provided with fire door 13, the below is provided with fire grate 9, the side, below of fire grate 9 is provided with ash hole 10 and fan interface 17, the side, below of inner bag 1 is provided with water return outlet 8, the top is provided with hot water outlet 21 and exhaust opening 20, and the centre position, top furnace tube 2 place of burner hearth 27 is provided with flame block piece 22, and flame block piece 22 is provided with through hole 23, it is characterized in that: be provided with fiery boss 7 of retaining and air outlet 14 around above flame block piece 22, air outlet 14 is communicated with fan interface 17.

Described flame block piece 22 is the casing shape, and its inner chamber is communicated with stove hall pipe 2, and described through hole 23 is for tubulose and gang up flame block piece 22 up and down.

Be provided with ventilation duct 6 in the described inner bag 1, a termination fan interface 17 of ventilation duct 6, the other end are given a dinner for a visitor from afar and are overlapped 16, and wind cover 16 is located on the inner side edge of the fiery boss 7 of retaining, and described air outlet 14 is located on the inner side edge of wind cover 16.

The top of described flame block piece 22 is provided with secondary flame block piece 24, and secondary flame block piece 24 is the casing shape, and its inner chamber is communicated with stove hall pipe 2.

Be provided with a bottom air inlet pipe 18 in the described fan interface 17, one end of bottom air inlet pipe 18 inserts the below of fire grate 9, the inboard of bottom air inlet pipe 18 is provided with air regulating board 19, the outside and handle 29 that air regulating board 19 switches through axle 15 and extend out to fan interface 17 join, with rotating shaft 15 flap 26 that has been fixedly connected, flap 26 is provided with long arc-shaped holes, between flap 26 and fan interface 17, be provided with backing plate 28, be rotary with bolt and the long arc-shaped holes on flap 26 on the backing plate 28 and stretch out with nut 25 and match, backing plate 28 is fixedly connected with fan interface 17.

The utility model compared with prior art has following advantage: owing to be provided with fiery boss 7 of retaining and air outlet 14 around above flame block piece 22, air outlet 14 is communicated with fan interface 17, so when work, when rising to the fiery boss of retaining 7 places, the flame of inner bag madial wall is forced to change direction, promptly change into towards stove hall center position, to extinguish and the gas that produces coal gas is lighted once more this moment through flame block piece 22, the burning that utilizes coal gas is to water in the stove hall pipe and the heating of the water in the inner bag, overcome the defect that the coal gas that produces in the prior art directly discharges out of the furnace, save the energy, improve the thermal efficiency, reduced the pollution of boiler environment.

Description of drawings:

Fig. 1 is the structural representation of the utility model specific embodiment.

The specific embodiment:

As shown in Figure 1: 1 is the inner bag of being made up of the madial wall [5] and the lateral wall [4] of metal material, inner bag 1 is positioned at the inboard of body of heater shell, the body of heater shell is made by metallic plate and insulation material, forms an integral body with inner bag 1, and the global shape of boiler is cylindric.The inboard of inner bag 1 is a burner hearth 27, and the top of burner hearth 27 is arranged with the double-deck furnace tube 2 of vertical upper and lower settings, and furnace tube 2 is communicated with the inner chamber of inner bag 1.The below of burner hearth is combustion chamber 3, and there is fire door the side of combustion chamber 3, and fire door is two, and one is to be positioned at the upper furnace door 13 that the top is used for coal, and another is the lower furnace door 11 that is used to adjust fuel that is positioned at the below.Fire grate 9 is arranged below, and there are ash hole 10 and fan interface 17 in the side, below of fire grate 9.Below inner bag 1, be connected to water return outlet 8, can join by flange and system's water return pipeline.The top is connected to hot water outlet 21, can join by flange and system's heat supplying pipeline.Exhaust opening 20 is positioned at top and its welding of inner bag 1, and the combustion chamber 3 of inner bag 1 inboard is communicated with the outside of inner bag 1, is used for smoke evacuation.Inner bag 1 also is connected to manometer, pressure-reducing valve and temperature display meter etc., is used to show its pressure, temperature and adjusts pressure automatically.Centre position, furnace tube 2 place is provided with the flame block piece 22 of band through hole 23 above burner hearth 27, is used to prevent that fire combustion and hot flue gas from discharging out of the furnace fast.Above-mentioned is the prior art part, no longer describes in detail.

Be provided with fiery boss 7 of retaining and air outlet 14 around above flame block piece 22, keeping off fiery boss 7 is that the madial wall 5 of forming inner bag 1 protrudes the boss that forms to the inside, and the inner side edge that keeps off fiery boss 7 is provided with wind cover 16, and wind cover 16 in the form of a ring.Circumference evenly is provided with air outlet 14 on the madial wall of wind cover 16.Be provided with ventilation duct 6 in the inner bag 1, a termination fan interface 17 of ventilation duct 6, the other end are given a dinner for a visitor from afar and are overlapped 16.Be provided with a bottom air inlet pipe 18 in the described fan interface 17, the below that bottom air inlet pipe 18 is welded on the madial wall 5 and an end inserts fire grate 9, the inboard of bottom air inlet pipe 18 is provided with air regulating board 19, the outside and handle 29 that air regulating board 19 switches through axle 15 and extend out to fan interface 17 join, with rotating shaft 15 flap 26 that has been fixedly connected, flap 26 is provided with long arc-shaped holes, between flap 26 and fan interface 17, be provided with backing plate 28, be rotary with bolt and the long arc-shaped holes on flap 26 on the backing plate 28 and stretch out with nut 25 and match, backing plate 28 and fan interface 17 fixing welding.

Described flame block piece 22 is the casing shape, i.e. trapezoidal cabinet, and by the metallic plate welding production, its inner chamber is communicated with stove hall pipe 2, and described through hole 23 is a tubulose, adopts the upper and lower bottom plate welding forming of metal tube and trapezoidal cabinet, and gangs up flame block piece 22 up and down.

The top of described flame block piece 22 is provided with secondary flame block piece 24, and secondary flame block piece 24 is the casing shape, i.e. taper casing, and by the metallic plate welding production, its inner chamber is communicated with stove hall pipe 2.

During work, flame in the combustion chamber 3 and hot flue gas via through holes 23 and madial wall 5 rise, and the fray-out of flame by through hole 23 produces coal gas, and the flame that rises along madial wall 5 changes direction when running into the fiery boss 7 of retaining, towards the Lu Tang center, light the coal gas of the fray-out of flame generation of via through holes 23.Dry to fan interface 17 places by air-introduced machine, the wind that enters in the fan interface 17 is divided into two-way, one the tunnel enters the bottom of fire grate 9 through bottom air inlet pipe 18, be used for the fired coal combustion on the fire grate 9, another road enters wind cover 16 through ventilation duct 6, blow to the top of flame block piece 22 again from air outlet 14, be used for to being positioned at flame block piece 22 tops, the secondary combustion chamber of secondary flame block piece 24 belows infeeds combustion air.

Claims (5)

1, a kind of small-sized coal gasification coal-burning boiler, it comprises the inner bag [1] that is positioned at body of heater shell inboard, the inboard of inner bag [1] is burner hearth [27], be arranged with furnace tube [2] in the top of burner hearth [27], furnace tube [2] is communicated with the inner chamber of inner bag [1], combustion chamber [3] is established in the below of burner hearth [27], the side is provided with fire door [13], the below is provided with fire grate [9], the side, below of fire grate [9] is provided with ash hole [10] and fan interface [17], the side, below of inner bag [1] is provided with water return outlet [8], the top is provided with hot water outlet [21] and exhaust opening [20], and the top furnace tube [2] of burner hearth [27] is located the centre position and is provided with flame block piece [22], and flame block piece [22] is provided with through hole [23], it is characterized in that: be provided with retaining fiery boss [7] and air outlet [14] around the top of flame block piece [22], air outlet [14] is communicated with fan interface [17].

2, small-sized coal gasification coal-burning boiler according to claim 1, it is characterized in that: described flame block piece [22] is the casing shape, and its inner chamber is communicated with stove hall pipe [2], and described through hole [23] is for tubulose and gang up flame block piece [22] up and down.

3, small-sized coal gasification coal-burning boiler according to claim 1 and 2, it is characterized in that: be provided with ventilation duct [6] in the described inner bag [1], one termination fan interface [17] of ventilation duct [6], the other end cover [16] of giving a dinner for a visitor from afar, wind cover [16] is located on the inner side edge of the fiery boss of retaining [7], and described air outlet [14] is located on the inner side edge of wind cover [16].

4, small-sized coal gasification coal-burning boiler according to claim 3, it is characterized in that: the top of described flame block piece [22] is provided with secondary flame block piece [24], and secondary flame block piece [24] is the casing shape, and its inner chamber is communicated with stove hall pipe [2].

5, small-sized coal gasification coal-burning boiler according to claim 4, it is characterized in that: be provided with a bottom air inlet pipe [18] in the described fan interface [17], one end of bottom air inlet pipe [18] inserts the below of fire grate [9], the inboard of bottom air inlet pipe [18] is provided with air regulating board [19], the outside and handle [29] that air regulating board [19] switches through axle [15] and extend out to fan interface [17] join, with rotating shaft [15] flap [26] that has been fixedly connected, flap [26] is provided with long arc-shaped holes, between flap [26] and fan interface [17], be provided with backing plate [28], be rotary with bolt and the long arc-shaped holes on flap [26] on the backing plate [28] and stretch out with nut [25] and match, backing plate [28] is fixedly connected with fan interface [17].