CN2740950Y - Multi-purpose parent-subsidiary boiler with three return-strokes - Google Patents

Abstract

The utility model provides a multi-purpose parent-subsidiary boiler with three return-strokes, which comprises a housing, a furnace, a base arranged at the lower part of the boiler body, a cleanout door, an ash warehouse, a fire grate, a water inlet pipe, a fire door, a blast chamber, an arc pan bottom, a stand water pipe, a fire barrier, a high temperature water cavity arranged at the upper part of the boiler body, a water outlet pipe, a manhole, a back air flue and a chimney. The utility model is characterized in that a subsidiary boiler is arranged between the back air flue and the chimney, and a preheating water cavity is arranged at the middle part of the subsidiary boiler casing; the preheating water cavity is provided with a heat convection smoke pipe, an air pipe of the subsidiary fire grate, a water inlet and a water outlet of the preheating water cavity; a lower dust chamber and an ash cleaning door are arranged at the lower part of the subsidiary boiler, and an upper dust chamber and an ash cleaning door are arranged at the upper part of the subsidiary boiler.

Description

A kind of mother and sons' three-pass boiler of using more

Technical field

The utility model relates to a kind of civil boiler, and particularly a kind of main body is female stove, has added the hot-water boiler of sub-stove at the rear portion.

Background technology

Boiler is the heat power equipment that extensively adopts during people live, be generally single return structures, the medium of boiler for domestic is a hard water, the gradient of horizontal water tube is generally less than 12 degree, diameter is less than 133 millimeters, water in the water pipe can't be in a tumult to static, and the temporary hardness of water and the fouling of permanent hardness are very serious, can't clear up.Thereby it is poor to cause conducting heat, and red-hot flame and high-temperature flue gas force pipe overheated, pipe break when serious.In addition, the red-hot flame of single backhaul boiler and high-temperature flue gas flow process are too short has left stove very soon, and heat waste is very big, and the thermal efficiency is very low, returns environment simultaneously and brings severe contamination.Advanced in recent years double-grate boiler improves to some extent on combustion system, but structurally be unable to do without horizontal water tube, fouling can't be cleared up, effect worse and worse in the use, there are many stoves in two or three years just can't use, its main cause is: the fouling of (1) horizontal water tube is difficult to cleaning, damages also to be difficult to repair; (2) flue gas flow is very short often is capped with heating surface, and cleaning is difficulty relatively, has a strong impact on heat transfer, and boiler can't rationally normally be moved.The applicant has applied for that in 1996 a Chinese patent (ZL96213477.5) is many with vertical water pipe three backhaul pressure-less boilers, discloses a kind of vertical water pipe boiler.At the bottom of this boiler comprises the base, cleanout door, Hui Cang, fire grate, water inlet pipe, fire door, combustion chamber, arc-shaped pot of flue in the shell, shell, body of heater bottom, the rear pass at high temperature water cavity, outlet pipe, manhole and the body of heater rear portion of the vertical water pipe at body of heater middle part, firebreak, upper of furnace body, chimney, and the preheating water cavity form.This boiler structure is simple, at the bottom of the arc-shaped pot of many vertical water pipes and inclination the temporary hardness of water should not be deposited, and the incrustation scale that utilizes manhole to enter to clear up very easily in the shell at the bottom of many vertical water pipes and the arc-shaped pot etc., thereby has increased service life.The red-hot flame of combustion chamber and high-temperature flue gas are crossed firebreak through the top of flue and are entered many vertical water pipe heat convection districts, enter rear smoke chamber by rear pass again and form the N shape flow direction, discharge from chimney then, therefore the flow process that has prolonged flue gas has improved exerting oneself and the thermal efficiency of boiler greatly.But because the preheating water cavity in its rear smoke chamber is too little, the heat convection pipe makes that less its heat exchange is not very abundant, this structure is big inadequately to the resistance of flue gas simultaneously, makes that its dust removing effects is not fine.

The content of invention

The purpose of this utility model is to overcome above-mentioned deficiency multi-functional that not only can the warming oneself but also can boil water of the higher primary-auxiliary type of a kind of efficient, preheating water cavity that sub-stove both can be used as female stove also can use separately is provided, and sub-stove good dedusting effect, the deashing snaking is convenient, and simple in structure, the life-span long, boiler easy to maintenance.

The technical solution of the utility model is that the characteristics of this boiler are to comprise shell 7, flue 11 in the shell 7, the base 1 of body of heater bottom, cleanout door 2, ash storehouse 36, fire grate 38, water inlet pipe 3, fire door 4, combustion chamber 5, at the bottom of the arc-shaped pot 6, the vertical water pipe 10 at body of heater middle part, firebreak 8, the high temperature water cavity 14 of upper of furnace body, outlet pipe 13, the rear pass 29 at manhole 17 and body of heater rear portion and chimney 19, it is characterized in that between rear pass 29 and chimney 19, also being equipped with a sub-stove, sub-stove comprises sub-furnace shell 27, hot-water cavity 25 is given at sub-furnace shell 27 middle parts, give heat convection smoke pipe 26 is arranged in the hot-water cavity, sub-fire grate tracheae 21, give the water inlet 28 of hot-water cavity, delivery port 24, sub-stove bottom have dirt pocket 32 and shoot door 31, dirt pocket 23 and shoot door 22 on one are arranged at sub-stove top.

Another characteristics of the present utility model are that a tubular combustion-supporting also is housed on body of heater, promptly have an air outlet 37 at grey Cang36Chu, in the shell 7 and the corresponding position with vertical water pipe 10 of flue 11 blast pipe 9 is housed, air outlet 37 is connected with blast pipe 9 and forms tubular combustion-supporting through external pipe.

Another characteristics of the present utility model are that more than one elbow-shaped combustion-supporting 34 is housed on described fire grate 38, and elbow-shaped combustion-supporting 34 is made up of the blinds box-shaped air outlet 41 of the air inlet 39 of bottom, top one side and the air channel 40 that connects the two.

Another characteristics of the present utility model are on described manhole 17 Explosion-proof cap 18 to be housed.

The utlity model has following advantage and effect: 1, thermal efficiency height, because sub-stove has absorbed the waste heat of flue gas more fully, the effect owing to combustion-supporting is burnt fuel more fully again, so thermal efficiency height.2, multi-functional, the preheating water cavity that the utility model not only can be warmed oneself but also can boil water, sub-stove both can be used as female stove also can use separately.3, sub-stove good dedusting effect, the deashing snaking is convenient.4, simple in structure, life-span length, easy to maintenance.

Description of drawings

Fig. 1 is the utility model structural representation

Fig. 2 is the structural representation of elbow-shaped combustion-supporting

Fig. 3 is the A-A cutaway view of Fig. 2

The specific embodiment

As Fig. 1, it comprises base 1, cleanout door 2, water inlet pipe 3, fire door 4, combustion chamber 5, at the bottom of the arc-shaped pot 6, shell 7, firebreak 8, blast pipe 9, vertical water pipe 10, flue 11, thermometer 12, outlet pipe 13, high temperature water cavity 14, liquid level gauge 15, steam vent 16, manhole 17, Explosion-proof cap 18, chimney 19, rock wool heat-preservation layer 20, sub-fire grate tracheae 21, shoot door 22, dirt pocket 23 on the sub-stove, preheating water cavity outlet 24, give hot-water cavity 25, heat convection smoke pipe 26, sub-furnace shell 27, give the water inlet (running water inlet) 28 of hot-water cavity, rear pass 29, the dirty base 30 of sub-fire grate, shoot door 31, following dirt pocket 32, arc water cavity 33, elbow-shaped combustion-supporting 34, blowdown base 35, ash storehouse 36, air outlet 37, fire grate 38.Fuel is dropped into by fire door 4, in the combustion chamber 5 of good ignition condition fire burns, red-hot flame and high-temperature flue gas in flue 11 on flow, climb over behind the radiation heat transfer in many vertical water pipe 10 zones of firebreak 8 inflows and carry out the secondary heat convection, enter sub-stove 27 from rear pass 29 when arriving the bottom and carry out the 3rd backhaul, in sub-stove 27, carry out heat convection, after waste heat passed to heat convection smoke pipe 26 and preheating water cavity 25, remove dirt pits through two of three backhauls, 60% flue dust collection retains down.Become 120 ℃ of low-temperature flue gas after the radiation, heat convection and enter atmosphere from chimney 19.Wherein, firebreak 8 can increase fire box temperature, and the prolong smoke flow process, reduces flue gas flow rate, and the standpipe place behind firebreak 8 forms eddy flow and becomes first except that dirt pits.Flue gas enter sub-stove 27 following dirt pocket 32 time same eddy flow that forms, add to form the decelerating effect of heat convection smoke pipe 26 second at this and remove dirt pits.When flue gas enters the last dirt pocket 23 of sub-stove 27, because the speed of flue gas fallen, so also there is the part dust to assemble at this. Open shoot door 31 or 22 and just can clear up dust easily.Composite rock wool heat-insulation layer 20 is set up in the shell outside, has reduced the thermal loss of boiler, thereby has improved the thermal efficiency of boiler greatly.

Water enter between flue 11 and the shell 7 by water inlet pipe 3 and arc-shaped pot at the bottom of 6, heating is after vertical water pipe 10 rises, heating enters high temperature water cavity 14 once more, high-temperature water flows out from outlet pipe 13, for heating or use such as have a bath.Because 6 the heat exchange high temperature water cavity 14 of all can being in a tumult at the bottom of the pressure of backwater and the arc-shaped pot, the flowing of water in arc water cavity 33 and the vertical water pipe 10, avoided water temporary hardness deposition and reduce the fouling of permanent hardness.The water inlet 28 that running water gives hot-water cavity from sub-stove enters preheating water cavity 25 hot water after 26 heat exchange of heat convection smoke pipe and flows out from preheating water cavity outlet 24 and wait usefulness for having a bath or as the preheating water use of female stove.

Linked to each other by fire door 4 rear pass 29 between flue 11 and the shell 7, sub-stove outer covering 27 links to each other with shell 7, and 6 link to each other at the bottom of flue 11 tops and the arc-shaped pot.For guaranteeing safety, nothing is pressed on the shell 7 and is provided with Explosion-proof cap 18, blast pipe 16, liquid level gauge 15, thermometer 12.Be provided with manhole 17, blowdown base 35 in order to keep in repair and clear up incrustation scale.For dedusting is provided with shoot door 31,22, the cleannes of heating surface have been guaranteed.

In order to guarantee that the fuel spy that is fully burned in the combustion chamber is provided with combustion-supporting.One is tubular combustion-supporting, promptly has an air outlet 37 at grey Cang36Chu, in the shell 7 and the corresponding position with vertical water pipe 10 of flue 11 blast pipe 9 is housed, and air outlet 37 is connected with blast pipe 9 and forms tubular combustion-supporting through external pipe.Under the effect of chimney 19 drafts, entered in the stove hall through air outlet 37, external pipe, blast pipe 9 in the grey storehouse 36 by the air of ashes and burner hearth heating, the secondary wind that has been heated is provided, make burning more abundant.It two is the elbow-shaped combustion-supporting, and as Fig. 2, Fig. 3, elbow-shaped combustion-supporting 34 is made up of the blinds box-shaped air outlet 41 of the air inlet 39 of bottom, top one side and the air channel 40 that connects the two.The elbow-shaped combustion-supporting is installed on the fire grate 38, under the effect of chimney 19 drafts, entered elbow-shaped combustion-supporting 34 from air inlet 39 in the ash storehouse 36, through the air channel 40 and discharge, be fuel combustion supporting and enter fuel portion (as coal) from air outlet 41 by the air of ashes and burner hearth heating.The installation number of elbow-shaped combustion-supporting is more than one, and present embodiment is 3, is distributed in the both sides and the rear end of fire grate 38.

Claims (4)

1, a kind of mother and sons' three-pass boiler of using more, comprise shell (7), flue (11) in the shell (7), the base of body of heater bottom (1), cleanout door (2), ash storehouse (36), fire grate (38), water inlet pipe (3), fire door (4), combustion chamber (5), at the bottom of the arc-shaped pot (6), the vertical water pipe (10) at body of heater middle part, firebreak (8), the high temperature water cavity (14) of upper of furnace body, outlet pipe (13), the rear pass (29) at manhole (17) and body of heater rear portion and chimney (19), it is characterized in that between rear pass (29) and chimney (19), a sub-stove being housed also, sub-stove comprises sub-furnace shell (27), hot-water cavity (25) is given at sub-furnace shell (27) middle part, give heat convection smoke pipe (26) is arranged in the hot-water cavity, sub-fire grate tracheae (21), give the water inlet (28) of hot-water cavity, delivery port (24), sub-stove bottom have dirt pocket (32) and shoot door (31), dirt pocket on one (23) and shoot door (22) are arranged at sub-stove top.

2, a kind of mother and sons' three-pass boilers of using as claimed in claim 1 more, it is characterized in that on body of heater, also being equipped with a tubular combustion-supporting, promptly locate to have an air outlet (37) at Hui Cang (36), a blast pipe (9) is equipped with in the corresponding position with vertical water pipe (10) at shell (7) and flue (11), air outlet (37) is connected with blast pipe (9) and forms tubular combustion-supporting through external pipe.

3, a kind of mother and sons' three-pass boilers of using as claimed in claim 1 more, it is characterized in that being equipped with on described fire grate (38) more than one elbow-shaped combustion-supporting (34), elbow-shaped combustion-supporting (34) is made up of the blinds box-shaped air outlet (41) of the air inlet (39) of bottom, top one side and the air channel (40) that connects the two.

4, describedly a kind ofly use mother and sons' three-pass boiler as claim 1 or 2 or 3 more, it is characterized in that on described manhole (17), being equipped with Explosion-proof cap (18).

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