阅读说明：本技术 一种利用烟气加热助燃空气的节能型燃气坩埚炉 (Energy-saving gas crucible furnace for heating combustion air by using flue gas ) 是由 王如卿 于 2019-09-26 设计创作，主要内容包括：本发明公开了一种利用烟气加热助燃空气的节能型燃气坩埚炉,属于加热装置技术领域,其技术方案要点是,包括固热腔体和热交换器,固热腔体的左侧从后至前依次连通有烟囱和进气管,固热腔体的内侧壁四周均固定连接有保温砖,热交换器的上端面固定连接有仪表,热交换器的下端面固定连接有两个支架热交换器的右侧设置有送风机,固热腔体作业时,固热腔体内的烟气输送到热交换器内,使热交换器将燃料燃烧充分,使热能传导效率提高,充分二次利用高温烟气,避免高温烟气快速排出损失,达到了热效率高、能耗低、生产效率高和使用安全便捷效果,进而便于熔铅坩埚的加热,降低能源消耗,提高生产效率。(The invention discloses an energy-saving gas crucible furnace for heating combustion air by using flue gas, belonging to the technical field of heating devices, and the technical scheme is characterized by comprising a heat-fixing cavity and a heat exchanger, wherein the left side of the heat-fixing cavity is sequentially communicated with a chimney and an air inlet pipe from back to front, the periphery of the inner side wall of the heat-fixing cavity is fixedly connected with insulating bricks, the upper end surface of the heat exchanger is fixedly connected with an instrument, the lower end surface of the heat exchanger is fixedly connected with the right sides of two support heat exchangers, and an air feeder is arranged on the right side of the two support heat exchangers, when the heat-fixing cavity works, the flue gas in the heat-fixing cavity is conveyed into the heat exchanger, so that the heat exchanger can fully combust fuel, the heat energy conduction efficiency is improved, the high-temperature flue gas is fully utilized secondarily, the high-temperature flue gas is prevented from being, reduce energy consumption and improve production efficiency.)

1. The utility model provides an utilize energy-saving gas crucible furnace of flue gas heating combustion air, includes solid hot cavity (1) and heat exchanger (3), heat exchanger (3) are located the right side of solid hot cavity (1), its characterized in that: the left side of solid hot cavity (1) from the back to preceding intercommunication in proper order has chimney (103) and intake pipe (104), the inside bottom fixedly connected with sand bed (106) of solid hot cavity (1), the inside wall of solid hot cavity (1) all around equal fixedly connected with insulating brick (105), the inside of solid hot cavity (1) is provided with crucible chamber (107), inside upper end fixedly connected with crucible (2) of solid hot cavity (1), the up end fixedly connected with instrument (301) of heat exchanger (3), two supports (305) of the lower terminal surface fixedly connected with of heat exchanger (3) the right side of heat exchanger (3) is provided with forced draught blower (4).

2. The energy-saving gas crucible furnace for heating combustion air by using flue gas as claimed in claim 1, wherein: the right side wall of the heat exchanger (3) is sequentially communicated with an air inlet pipe (302) and a smoke exhaust pipe (303) from back to front.

3. The energy-saving gas crucible furnace for heating combustion air by using flue gas as claimed in claim 2, wherein: the left side of the blower (4) is communicated with a connecting pipe (401), and the other end of the connecting pipe (401) is sleeved with the air inlet pipe (302).

4. The energy-saving gas crucible furnace for heating combustion air by using flue gas as claimed in claim 1, wherein: the front end face of the heat fixing cavity (1) is communicated with a combustion-supporting pipeline (101), and the rear end face of the heat fixing cavity (1) is communicated with a flue gas pipeline (102).

5. The energy-saving gas crucible furnace for heating combustion air by using flue gas as claimed in claim 4, wherein: the rear end face of the heat exchanger (3) is communicated with a combustion-supporting air flow inlet pipe (306), the other end of the combustion-supporting air flow inlet pipe (306) is sleeved with the flue gas pipeline (102), the front end face of the heat exchanger (3) is communicated with a combustion-supporting air flow outlet pipe (304), and the other end of the combustion-supporting air flow outlet pipe (304) is sleeved with the combustion-supporting pipeline (101).

6. The energy-saving gas crucible furnace for heating combustion air by using flue gas as claimed in claim 4, wherein: the upper end surface of the flue gas pipeline (102) is communicated with a valve (1021).

7. The energy-saving gas crucible furnace for heating combustion air by using flue gas as claimed in claim 5, wherein: and a combustion-supporting air pipeline (307) is arranged in the heat exchanger (3), and the combustion-supporting air pipeline (307) is communicated with a combustion-supporting air flow inlet pipe (306).

Technical Field

The invention relates to the technical field of heating devices, in particular to an energy-saving gas crucible furnace for heating combustion air by using flue gas.

Background

The flue gas waste heat recovery method generally adopts two methods, one is to preheat a workpiece; the other is that the preheating air is used for supporting combustion, the flue gas preheating workpiece needs to occupy larger volume for heat exchange and is often limited by an operation field (the intermittent furnace kiln can not be adopted), and the preheating air is used for supporting combustion and is a better method, and the preheating air is generally arranged on a heating furnace and can also strengthen combustion, accelerate the heating speed of the furnace and improve the thermal performance of the furnace.

However, high-temperature flue gas in the existing gas crucible furnace can be rapidly discharged during operation, so that the heat efficiency in the crucible furnace is low, the energy consumption is high, and the production efficiency is low.

Disclosure of Invention

The invention provides an energy-saving gas crucible furnace for heating combustion-supporting air by using flue gas, and aims to solve the problems that high-temperature flue gas can be quickly discharged during operation of the conventional gas crucible furnace, so that the heat efficiency in the crucible furnace is low, the energy consumption is high, and the production efficiency is low.

the invention is realized in such a way, the energy-saving gas crucible furnace for heating combustion air by using flue gas comprises a heat fixing cavity and a heat exchanger, wherein the heat exchanger is positioned on the right side of the heat fixing cavity, the left side of the heat fixing cavity is sequentially communicated with a chimney and an air inlet pipe from back to front, the bottom end inside the heat fixing cavity is fixedly connected with a sand layer, the periphery of the inner side wall of the heat fixing cavity is fixedly connected with insulating bricks, a crucible cavity is arranged inside the heat fixing cavity, the upper end inside the heat fixing cavity is fixedly connected with a crucible, the upper end surface of the heat exchanger is fixedly connected with an instrument, the lower end surface of the heat exchanger is fixedly connected with two supports, and the right side of the heat exchanger is provided.

in order to conveniently convey fresh air conveyed by a blower into the heat exchanger by using the air inlet pipe, the arranged smoke exhaust pipe is convenient for exhausting waste gas filtered by the heat exchanger.

In order to conveniently convey fresh air into the heat exchanger, the energy-saving gas crucible furnace for heating combustion air by using flue gas is preferably used, the left side of the blower is communicated with a connecting pipe, and the other end of the connecting pipe is sleeved with an air inlet pipe.

In order to facilitate the operation of the heat exchanger and provide heating combustion-supporting air for the crucible cavity, the energy-saving gas crucible furnace using the flue gas to heat the combustion-supporting air is preferably used, the front end face of the heat fixing cavity is communicated with a combustion-supporting pipeline, and the rear end face of the heat fixing cavity is communicated with a flue gas pipeline.

In order to conveniently convey hot flue gas in the crucible cavity into the heat exchanger through the flue gas pipeline and convey hot gas exchanged in the heat exchanger into the crucible cavity, the energy-saving gas crucible furnace utilizing the flue gas to heat combustion-supporting air is preferred.

in order to conveniently convey fresh air into the heat exchanger, the upper end surface of the flue gas pipeline is preferably communicated with a valve.

In order to conveniently convey fresh air conveyed by a blower into the heat exchanger by the air inlet pipe, the arranged smoke exhaust pipe is convenient for exhausting waste gas filtered by the heat exchanger.

compared with the prior art, the invention has the beneficial effects that:

1. According to the energy-saving gas crucible furnace for heating combustion air by using the flue gas, the heat exchanger is arranged on the right side of the heat fixing cavity, when the heat fixing cavity works, the flue gas in the heat fixing cavity is conveyed into the heat exchanger, so that the heat exchanger can fully combust fuel, the heat energy conduction efficiency is improved, the high-temperature flue gas can be fully utilized secondarily, the high-temperature flue gas can be prevented from being quickly discharged and lost, the effects of high heat efficiency, low energy consumption, high production efficiency and safe and convenient use can be achieved, the heating of a lead melting crucible can be facilitated, the energy consumption can be reduced, and the production efficiency can be improved;

2. According to the energy-saving gas crucible furnace for heating combustion air by using flue gas, the insulating bricks are fixedly connected to the inner side wall of the heat-fixing cavity, so that the heat-fixing cavity is further firm, the heat-fixing cavity is convenient for supporting a crucible, heat is applied to the heat-fixing cavity, and the heat in the heat-fixing cavity can be reduced by the insulating bricks;

3. This kind of utilize energy-saving gas crucible furnace of flue gas heating combustion air sets up the forced draught blower through the right side at heat exchanger to make the forced draught blower conveniently to carry fresh gas in the heat exchanger, make fresh gas through filtering, purifying, in the heat exchange treatment back sends into the heat fixation cavity, make heat energy conduction efficiency improve, abundant reutilization high temperature flue gas, reduction energy resource consumption.

Drawings

FIG. 1 is an overall structure view of an energy-saving gas crucible furnace for heating combustion air by using flue gas according to the present invention;

FIG. 2 is a block diagram of a screw of the present invention;

FIG. 3 is a view of the configuration of the groove of the present invention;

FIG. 4 is a top view of the main body of the apparatus of the present invention;

in the figure, 1, a heat fixing cavity; 101. a combustion-supporting conduit; 102. a flue gas duct; 1021. a valve; 103. a chimney; 104. an air inlet pipe; 105. insulating bricks; 106. a sand layer; 107. a crucible cavity; 2. a crucible; 3. a heat exchanger; 301. a meter; 302. an air inlet pipe; 303. a smoke exhaust pipe; 304. a combustion air flow outlet pipe; 305. a support; 306. a combustion air flow inlet pipe; 307. a combustion air duct; 4. a blower; 401. and (4) connecting the pipes.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides an utilize flue gas heating combustion air's energy-saving gas crucible furnace, including solid hot cavity 1 and heat exchanger 3, heat exchanger 3 is located solid hot cavity 1's right side, solid hot cavity 1's left side from the back to preceding intercommunication have chimney 103 and intake pipe 104 in proper order, solid hot cavity 1 inside bottom fixedly connected with sand bed 106, solid hot cavity 1's inside wall all fixedly connected with insulating brick 105 all around, solid hot cavity 1's inside is provided with crucible chamber 107, solid hot cavity 1's inside upper end fixedly connected with crucible 2, heat exchanger 3's up end fixedly connected with instrument 301, heat exchanger 3's two supports 305 fixedly connected with heat exchanger 3's right side is provided with forced draught blower 4.

In this embodiment: the heat exchanger 3 is arranged on the right side of the heat fixing cavity 1, when the heat fixing cavity 1 works, smoke in the crucible cavity 107 is conveyed into the heat exchanger 3, so that the heat exchanger 3 can fully combust fuel, the heat energy conduction efficiency is improved, high-temperature smoke is fully utilized secondarily, the high-temperature smoke is prevented from being quickly exhausted and lost, the effects of high heat efficiency, low energy consumption, high production efficiency and safe and convenient use are achieved, further, the heating of the lead melting crucible 2 is facilitated, the energy consumption is reduced, the production efficiency is improved, the heat preservation brick 105 is fixedly connected to the inner side wall of the heat fixing cavity 1, the heat fixing cavity 1 is further firm, the crucible 2 is conveniently supported by the heat fixing cavity 1, heat is applied to the heat fixing cavity 1, the heat preservation brick 105 can reduce the heat in the heat fixing cavity 1 to be dissipated, the air feeder 4 is arranged on the right side of the heat exchanger 3, so that the air feeder 4 can conveniently convey fresh gas into the heat exchanger, fresh gas is filtered, purified and subjected to heat exchange treatment and then is sent into the solid heat cavity 1, so that the heat energy conduction efficiency is improved, high-temperature flue gas is fully recycled, and the energy consumption is reduced.

specifically, the right side wall of the heat exchanger 3 is sequentially communicated with an air inlet pipe 302 and a smoke exhaust pipe 303 from back to front.

In this embodiment: the air inlet pipe 302 and the smoke exhaust pipe 303 are sequentially communicated from front to back on the right side of the heat exchanger 3, so that fresh air conveyed by the blower 4 is conveniently conveyed into the heat exchanger 3 by the air inlet pipe 302, and waste gas filtered by the heat exchanger 3 is conveniently exhausted by the arranged smoke exhaust pipe 303.

Specifically, the left side of the blower 4 is communicated with a connecting pipe 401, and the other end of the connecting pipe 401 is sleeved with the air inlet pipe 302.

In this embodiment: by fitting the other end of the connection pipe 401 to the air inlet pipe 302, the supply of fresh air into the heat exchanger 3 is facilitated.

Specifically, the front end face of the heat fixing cavity 1 is communicated with a combustion-supporting pipeline 101, and the rear end face of the heat fixing cavity 1 is communicated with a flue gas pipeline 102.

In this embodiment: the front end and the rear end of the heat-fixing cavity body 1 are respectively connected with the combustion-supporting pipeline 101 and the flue gas pipeline 102, so that hot flue gas in the crucible cavity 107 can be conveniently conveyed into the heat exchanger 3 through the flue gas pipeline 102, and hot gas exchanged in the heat exchanger 3 is conveyed into the crucible cavity 107.

Specifically, the rear end face of the heat exchanger 3 is communicated with a combustion-supporting air flow inlet pipe 306, the other end of the combustion-supporting air flow inlet pipe 306 is sleeved with the flue gas pipeline 102, the front end face of the heat exchanger 3 is communicated with a combustion-supporting air flow outlet pipe 304, and the other end of the combustion-supporting air flow outlet pipe 304 is sleeved with the combustion-supporting pipeline 101.

In this embodiment: the combustion air inlet pipe 306 and the combustion air outlet pipe 304 are respectively arranged at the front end and the rear end of the heat exchanger 3, so that the heat exchanger 3 is convenient to operate, and heating combustion air is provided in the crucible cavity 107.

Specifically, the upper end surface of the flue gas pipeline 102 is communicated with a valve 1021.

In this embodiment: the flow of flue gas into the heat exchanger 3 is conveniently controlled by communicating a valve 1021 at the upper end face of the flue gas duct 102.

Specifically, a combustion air duct 307 is provided inside the heat exchanger 3, and the combustion air duct 307 is communicated with the combustion air inlet pipe 306.

In this embodiment: through communicating combustion-supporting air pipeline 307 with combustion-supporting air flow import pipe 306 to conveniently carry the heating combustion-supporting air in crucible chamber 107, heat crucible 2, reduce energy consumption, improve production efficiency.

The working principle is as follows: firstly, the heat insulating brick 105 is fixedly connected with the inner side wall of the heat fixing cavity 1 to ensure that the heat fixing cavity 1 is firm, the heat fixing cavity 1 is convenient for supporting the crucible 2, heat is applied to the heat fixing cavity 1, the heat insulating brick 105 can reduce the heat in the heat fixing cavity 1 to be radiated, the combustion-supporting air flow inlet pipe 306 is sleeved with the flue gas pipeline 102, the combustion-supporting air flow outlet pipe 304 is sleeved with the combustion-supporting pipeline 101, the connecting pipe 401 communicated with the left side of the blower 4 is sleeved with the air inlet pipe 302, when the heat exchanger 3 is started, the flue gas in the crucible cavity 107 is conveyed to the heat exchanger 3 through the flue gas pipeline 102 and the combustion-supporting air flow inlet pipe 306, the blower 4 works, the blower 4 conveys fresh gas to the heat exchanger 3 through the connecting pipe 401, the heat exchanger 3 conveys the flue gas conveyed to the heat exchanger 3 by the flue gas pipeline 102 to the crucible cavity 107 for filtering and purifying, and then the fuel, make heat energy conduction efficiency improve, abundant reutilization high temperature flue gas avoids the quick exhaust loss of high temperature flue gas, has reached the convenient effect of thermal efficiency height, energy consumption low, production efficiency height and safe in utilization, and then the heating of the lead melting crucible of being convenient for 2 reduces energy resource consumption, improves production efficiency.

the present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.