CN212179210U - Energy-saving hot-blast stove - Google Patents

Abstract

The utility model discloses an energy-conserving hot-blast furnace, include the furnace body and install the combustion chamber at the furnace body top, the combustion chamber lateral wall is sandwich structure, installs annular baffle in the intermediate layer, and annular baffle separates the intermediate layer from top to bottom for preheating air circulation chamber and mist circulation chamber, the air inlet is installed to preheating air circulation chamber lower part, and the gas outlet is installed on upper portion, and preheating air circulation intracavity is equipped with annular gas passage, mist circulation chamber one side has gas premix case through the pipe connection, installs the air on the gas premix case and advances the pipe with coal gas, processing has the inlet channel group of multiunit and mist chamber circulation intercommunication on the furnace body inner wall, and the some firearm is installed to the furnace body inner wall, installs hot-blast exit tube on the furnace body. The utility model discloses gas mixing is even, the burning is abundant and can improve heat utilization rate, reduce the energy consumption.

Description

Energy-saving hot-blast stove

Technical Field

The utility model relates to the technical field of food processing, especially an energy-conserving hot-blast furnace.

Background

In the food processing process, hot air is mostly needed to be generated by a hot blast stove to heat and dry food raw materials, the most common modern large blast furnace is a heat accumulating type lattice brick hot blast stove, and the heat accumulating type hot blast stove can be divided into a top combustion type, an internal combustion type, an external combustion type and the like according to the combustion mode.

At present, the top combustion type hot blast stove is most widely used, but the gas nozzle and the air nozzle of the existing top combustion type hot blast stove are separately arranged and arranged on different sections, so that the gas and the air are not fully mixed, the combustion is not full, the air coefficient is large, the CO content in waste gas is too high, the heat energy can not be fully utilized, and the pollution probability to the environment is increased; in addition, the existing top combustion type hot blast stove can only produce hot air at the same temperature, but the hot air with high temperature is not needed in the food processing process, and the temperature of the hot air needs to be reduced when the hot blast stove is used, so that resources are wasted, the process is complicated, and the energy consumption of equipment is improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the utility model is not enough to the prior art, provide an energy-conserving hot-blast furnace that gas mixing is even, the burning is abundant and can improve heat utilization rate, reduce the energy consumption.

In order to realize the above purpose, the technical scheme of the utility model is as follows:

the utility model provides an energy-conserving hot-blast furnace, includes the furnace body and installs the combustion chamber at the furnace body top, the combustion chamber lateral wall is sandwich structure, installs annular baffle in the intermediate layer, and annular baffle separates the intermediate layer for preheating air circulation chamber and mist circulation chamber from top to bottom, the air inlet is installed to preheating air circulation chamber lower part, and the gas outlet is installed on upper portion, and preheating air circulation intracavity is equipped with the annular gas passageway, mist circulation chamber one side has gas to mix the case in advance through the pipe connection, and gas mixes and installs on the case in advance that the air advances pipe and coal gas advances the pipe, processing has the inlet channel group of multiunit and mist circulation chamber intercommunication on the furnace body inner wall, and the some firearm is installed to the furnace body inner wall, installs.

Preferably, a plurality of groups of the air inlet channel groups are annularly distributed on the inner wall of the furnace body.

Preferably, the air inlet passage group comprises two air inlet passages, and the included angle between the air flow directions in the two air inlet passages is 90-140 degrees.

Preferably, the gas premixing box comprises a circular gas communication box and a gas buffering box which is arranged at the bottom of the gas communication box and communicated with the gas communication box, a plurality of baffle plates are arranged in the gas buffering box in an up-and-down staggered mode, and the lower portion of the gas buffering box is communicated with the mixed gas circulation cavity through a pipeline.

Preferably, the air inlet pipe and the coal gas inlet pipe are both arranged in the tangential direction of the gas communication box, and the air inlet pipe and the coal gas inlet pipe are positioned on the same side of the gas communication box.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the side wall of the combustion chamber is arranged into a sandwich structure, the annular partition plate is arranged in the sandwich layer, the sandwich layer can be divided into a preheated air circulation cavity and a mixed gas circulation cavity, the lower part of the preheated air circulation cavity is provided with an air inlet, the upper part of the preheated air circulation cavity is provided with an air outlet, when the combustion chamber is used for combustion, the sandwich layer can better store heat, when air is introduced into the preheated air circulation cavity, the air can take the heat in the sandwich layer out, the temperature of the part is not high, the part can be used for heating food or preheating raw materials, the waste of heat is avoided, the link of cooling high-temperature hot air is avoided, and the energy consumption is well saved;

(2) the gas premixing box is arranged, so that coal gas and air can be mixed before entering the combustion chamber, the coal gas can be more sufficiently combusted after entering the combustion chamber, waste caused by insufficient combustion of the coal gas is avoided, the air inlet pipe and the coal gas inlet pipe are arranged in the tangential direction of the gas communication box, the air inlet pipe and the coal gas inlet pipe are positioned at the same side of the gas communication box, the coal gas and the air entering the gas communication box can independently form a rotational flow, and the two rotational flows are opposite in rotation direction, so that collision is formed, and the coal gas and the air are more sufficiently mixed;

(3) through the inlet channel group that has multiunit and mist circulation chamber intercommunication of processing on the furnace body inner wall, inlet channel group includes two inlet channels, and the contained angle between the gas flow direction is 90 ~ 140 in two inlet channels, can make the fine emergence collision of the mist that gets into the furnace body from two inlet channels of same inlet channel group, makes the quick dispersion of mist, combustion effect with higher speed, through mutually supporting of multiunit inlet channel group, gas dispersion with higher speed, it is more abundant to make the burning.

Drawings

Fig. 1 is a schematic structural diagram provided in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an air inlet passage group provided in an embodiment of the present invention;

fig. 3 is a top view of a gas premixing tank according to an embodiment of the present invention.

The labels in the figure are: 1-furnace body, 2-combustion chamber, 3-annular baffle, 4-preheated air circulation cavity, 5-mixed gas circulation cavity, 6-air inlet, 7-air outlet, 8-annular gas channel, 9-gas premixing box, 91-gas communication box, 92-gas slow flow box, 10-air inlet pipe, 11-gas inlet pipe, 12-gas inlet channel, 13-igniter, 14-hot air outlet pipe and 15-baffle plate.

Detailed Description

As shown in fig. 1 to 3, the energy-saving hot blast stove provided in this embodiment includes a stove body 1, a combustion chamber 2, an annular partition plate 3, a preheated air circulation cavity 4, a mixed gas circulation cavity 5, an air inlet 6, an air outlet 7, an annular gas passage 8, a gas premixing box 9, an air inlet pipe 10, a gas inlet pipe 11, an air inlet passage 12, an igniter 13, a hot air outlet pipe 14, and a baffle plate 15.

The combustion chamber 2 rather than having a perfect understanding is installed at 1 top of furnace body, and 2 cross-sections of combustion chamber are circular, and the lateral wall of combustion chamber 2 is sandwich structure, and the intermediate layer lower part installs annular baffle 3, and annular baffle 3 separates the intermediate layer from top to bottom for preheating air circulation chamber 4 and mist circulation chamber 5, preheating air circulation chamber 4 one side lower part and installing air inlet 6, gas outlet 7 is installed on opposite side upper portion, and air inlet 6 is connected with the air-blower, is equipped with annular gas passageway 8 in preheating air circulation chamber 4, and the air-blower can be gone into preheating air circulation chamber 4 with the air, and gas follows annular gas passageway 8 and moves around preheating air circulation chamber 4, finally discharges from gas outlet 7. When burning in combustion chamber 2, the heat of preserving that the intermediate layer can be better, after letting in the air to preheating air circulation chamber 4, the air can take away the heat in the intermediate layer, and this part temperature is not high, can be used for heating food or preheat raw and other materials, has avoided thermal waste, has avoided in addition to cool down this link with high temperature steam, the fine energy consumption of having practiced thrift.

The gas premixing box 9 comprises a circular gas alternating current box 91 and a gas slow flow box 92 which is arranged at the bottom of the gas alternating current box 91 and communicated with the gas alternating current box, wherein an air inlet pipe 10 and a gas inlet pipe 11 are arranged on the gas premixing box 9, valves are arranged on the air inlet pipe 10 and the gas inlet pipe 11, the air inlet pipe 10 and the gas inlet pipe 11 are arranged in the tangential direction of the gas alternating current box 91, and the air inlet pipe 10 and the gas inlet pipe 11 are positioned at the same side of the gas alternating current box 91. The gas and the air entering the gas communication box 91 can independently form rotational flows, and the two rotational flows are reversely rotated, so that collision is formed, and the gas and the air are more fully mixed.

The gas is provided with a plurality of baffle plates 15 in the gas buffering box 92 in an up-down staggered manner, the lower part of the gas buffering box 92 is communicated with the mixed gas annular flow cavity 5 through a pipeline, a one-way valve is arranged on the pipeline, the mixed gas mixed in the gas alternating current box 91 enters the gas buffering box 92 along with the mixed gas, the mixed gas flows in the gas buffering box 92 under the action of the baffle plates 15, the mixing is further realized, and the mixed gas enters the mixed gas annular flow cavity 5 through the pipeline.

The inner wall of the furnace body 1 is provided with a plurality of groups of air inlet channel groups communicated with the mixed gas circulation cavity 5, the plurality of groups of air inlet channel groups are annularly distributed on the inner wall of the furnace body 1, each air inlet channel group comprises two air inlet channels 12, and the included angle between the air flow directions in the two air inlet channels 12 is 90-140 degrees, preferably 120 degrees. Can make the fine emergence collision of the mist that gets into furnace body 1 from two inlet channel 12 of same inlet channel group, make the quick dispersion of mist, combustion effect accelerates, through mutually supporting of multiunit inlet channel group, gaseous dispersion accelerates, makes the burning more abundant.

The working principle of the embodiment is as follows: firstly, opening valves on an air inlet pipe 10 and a gas inlet pipe 11, inputting air and gas into a gas premixing box 9 according to a ratio, then opening a one-way valve on a pipeline, discharging premixed mixed gas into a mixed gas circulation cavity 5, further enabling the mixed gas to enter a furnace body 1 through an air inlet channel 12, then starting an igniter 13 for ignition, then starting a blower to suck external air into a preheated air circulation cavity 4 for preheating, enabling the preheated gas to be connected into other equipment through an air outlet 7, and enabling hot air in the furnace body 1 to be connected into other equipment through a hot air outlet pipe 14.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any modification and replacement based on the technical solution and inventive concept provided by the present invention should be covered within the protection scope of the present invention.

Claims (5)

1. The utility model provides an energy-conserving hot-blast furnace, includes furnace body (1) and installs combustion chamber (2) at furnace body (1) top, its characterized in that: the combustor (2) lateral wall is sandwich structure, installs annular baffle (3) in the intermediate layer, and annular baffle (3) are separated from top to bottom for preheating air circulation chamber (4) and mist circulation chamber (5) with the intermediate layer, preheat air circulation chamber (4) lower part and install air inlet (6), and gas outlet (7) are installed on upper portion, preheat and are equipped with annular gas passageway (8) in air circulation chamber (4), there is gas premixing case (9) mist circulation chamber (5) one side through the pipe connection, install the air on gas premixing case (9) and advance pipe (10) and coal gas and advance pipe (11), it has the inlet channel group of multiunit and mist circulation chamber (5) intercommunication to process on furnace body (1) inner wall, and some firearm (13) are installed to furnace body (1) inner wall, installs hot-blast exit tube (14) on furnace body (1).

2. The energy saving hot blast stove according to claim 1, characterized in that: the plurality of groups of air inlet channel groups are annularly distributed on the inner wall of the furnace body (1).

3. The energy saving hot blast stove according to claim 1 or 2, characterized in that: the air inlet channel group comprises two air inlet channels (12), and the included angle between the air flow directions in the two air inlet channels (12) is 90-140 degrees.

4. The energy saving hot blast stove according to claim 1, characterized in that: the gas premixing box (9) comprises a round gas alternating current box (91) and a gas buffering box (92) which is arranged at the bottom of the gas alternating current box (91) and communicated with the gas alternating current box, a plurality of baffle plates (15) are arranged in the gas buffering box (92) in an up-down staggered mode, and the lower portion of the gas buffering box (92) is communicated with the mixed gas circulation cavity (5) through a pipeline.

5. The energy saving hot blast stove according to claim 3, characterized in that: the air inlet pipe (10) and the coal gas inlet pipe (11) are both arranged in the tangential direction of the gas communication box (91), and the air inlet pipe (10) and the coal gas inlet pipe (11) are positioned on the same side of the gas communication box (91).

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