High-strength magnesium alloy energy-saving smelting furnace

Abstract

According to the high-strength magnesium alloy energy-saving smelting furnace provided by the utility model, fuel and a reducing agent are jetted by each fuel nozzle, and oxygen is jetted by each oxygen nozzle, so that sufficient combustion of the fuel is ensured, and the heating efficiency and the environmental protection performance of the high-strength magnesium alloy energy-saving smelting furnace are improved. The side wall of the furnace body sequentially comprises the lining layer, the first heat insulation filling layer, the heat insulation plate, the second heat insulation filling layer and the shell from inside to outside, so that the heat insulation performance of the furnace body is guaranteed, and the heat loss of the furnace body is reduced. Smoke generated in the working process of the high-strength magnesium alloy energy-saving smelting furnace enters the snakelike heating pipe and the smoke exhaust pipe through the smoke pipe and finally is exhausted to the outside through the smoke filter. In the process, heat of the smoke heats water in the heating water tank through the snakelike heating pipe, when the temperature of the water in the heating water tank reaches the preset temperature, the control mechanism controls the pumping pump to work, and the pumping pump discharges hot water in the heating water tank to an external hot water cylinder through the pumping pipe.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of magnesium alloy processing, in particular to high strength magnesium alloy energy saving smelting furnace. BACKGROUND

[0002] Magnesium alloy is an alloy that is composed of magnesium and other elements. Magnesium alloy has small density, high strength, large elastic modulus, good heat dissipation, good shock absorption, greater impact load capacity than aluminum alloy, and good corrosion resistance to organic matter and alkali. The main alloying elements of magnesium alloy include aluminum, zinc, manganese, cerium, thorium, and a small amount of zirconium or cadmium. The most widely used is magnesium aluminum alloy, followed by magnesium manganese alloy and magnesium zinc zirconium alloy. As a sub-industry of non-ferrous metal alloy industry, magnesium alloy industry benefits from the upgrading of manufacturing industry. As a capital and material intensive industry, the stability and low level of raw material prices, the integration and concentration of casting industry, and the progress of technology research and development will be more conducive to the development of magnesium alloy industry.

[0003] However, magnesium alloy needs to use a smelting furnace to smelt magnesium alloy raw materials during production and manufacturing. The traditional smelting furnace, such as the patent with application number CN201820344899.2 and the invention name of smelting furnace, does not recycle the heat generated by the flue gas during the combustion process, causing waste of energy consumption. UTILITY MODEL CONTENT

[0004] Therefore, it is necessary to provide a high-strength magnesium alloy energy-saving smelting furnace to solve the technical problem that the traditional smelting furnace does not recycle the heat generated by the flue gas during the combustion process, causing waste of energy consumption.

[0005] A high-strength magnesium alloy energy-saving smelting furnace, the high-strength magnesium alloy energy-saving smelting furnace comprises a furnace body, a flue gas treatment mechanism, and a control mechanism.

[0006] The side wall of the furnace body comprises, from the inside to the outside, an inner lining, a first heat insulation filling layer, a heat insulation plate, a second heat insulation filling layer, and an outer shell. A combustion disc is arranged in the combustion chamber of the furnace body, a plurality of fuel nozzles are uniformly arranged on the combustion disc, an annular bearing plate is arranged on the side wall of the combustion disc, and a plurality of oxygen nozzles are uniformly arranged on the annular bearing plate. The jet direction of each oxygen nozzle is arranged towards the upper space of the combustion disc.

[0007] The flue gas treatment mechanism comprises a heating water tank, a serpentine heating pipe, a flue gas discharge pipe, a flue gas filter and a drainage assembly; the heating water tank is provided with a temperature sensor and a liquid level sensor; the top of the heating water tank is provided with a water inlet pipe, and the water inlet pipe is provided with a water inlet valve; the water inlet pipe is in communication with an external water source pipe; the serpentine heating pipe is arranged at the bottom of the heating water tank, the input end of the serpentine heating pipe is in communication with the smoke pipe of the furnace body, and the output end of the serpentine heating pipe is in communication with the input end of the flue gas discharge pipe; the flue gas filter is arranged at the end of the flue gas discharge pipe exposed to the heating water tank; the drainage assembly comprises a pumping pump and a pumping pipe, the pumping pump is arranged at the bottom of the heating water tank, the output end of the pumping pump is in communication with the pumping pipe, and the output end of the pumping pipe is provided with a drainage valve.

[0008] The temperature sensor, the liquid level sensor, the pumping pump, the water inlet valve and the drainage valve are electrically connected with the control mechanism.

[0009] In one of the embodiments, the first and second thermal insulation filling layers are layers of perlite particles.

[0010] In one of the embodiments, the thermal insulation plate is an asbestos plate.

[0011] In one of the embodiments, the inner lining layer is a high-temperature resistant concrete layer.

[0012] In one of the embodiments, the combustion disc is a cylindrical structure.

[0013] In one of the embodiments, the annular bearing plate is integrally formed with the combustion disc.

[0014] In one of the embodiments, the control mechanism is connected with the outer wall of the heating water tank.

[0015] In one of the embodiments, the pumping pump is a centrifugal pump.

[0016] In one of the embodiments, the pumping pump is an axial flow pump.

[0017] In one of the embodiments, the pumping pump is a mixed flow pump.

[0018] The high-strength magnesium alloy energy-saving melting furnace in the working process, each fuel nozzle injection fuel and reducing agent, each oxygen nozzle injection oxygen, so as to ensure that the fuel is fully burned, improve the heating efficiency and environmental protection performance of the high-strength magnesium alloy energy-saving melting furnace. The side wall of the furnace body comprises an inner lining, a first heat insulation filling layer, a heat insulation plate, a second heat insulation filling layer and an outer shell from inside to outside, which ensures the heat insulation performance of the furnace body and reduces the heat loss of the furnace body. Thus, the high-strength magnesium alloy is efficiently melted. The flue gas generated in the working process of the high-strength magnesium alloy energy-saving melting furnace enters the serpentine heating pipe, the exhaust pipe and finally is discharged to the outside through the flue gas filter. In this process, the heat of the flue gas is heated through the serpentine heating pipe. When the water temperature in the heating water tank reaches the preset temperature, the control mechanism controls the pumping pump to work, and the pumping pump discharges the hot water in the heating water tank to the outside hot water cylinder through the pumping pipe. The high-strength magnesium alloy energy-saving melting furnace recycles the heat of the flue gas generated in the combustion process, avoiding the waste of energy consumption. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is a structural schematic view of the high-strength magnesium alloy energy-saving melting furnace in an embodiment.

[0020] Fig. 2 It is a sectional view of the side wall of the furnace body in an embodiment.

[0021] Fig. 3 It is a partial structural schematic view of the furnace body in an embodiment. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the utility model more apparent, easy to understand, the specific implementation of the utility model is described in detail below. In the following description, a lot of specific details are set forth in order to fully understand the utility model. However, the utility model can be implemented in many other ways different from the description herein, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below. In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0023] In addition, the terms "first", "second", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0024] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] In the present application, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0026] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes and are not the only embodiment.

[0027] Please see Figs. 1 to 3 The utility model provides a kind of high-strength magnesium alloy energy-saving smelting furnace 10, which comprises: furnace body 100, flue gas treatment mechanism 200 and control mechanism 300.

[0028] The side wall of the furnace body 100 comprises, from inside to outside, an inner lining layer 110, a first heat insulation filling layer 120, a heat insulation plate 130, a second heat insulation filling layer 140, and an outer shell 150. In the embodiment, the first heat insulation filling layer 120 and the second heat insulation filling layer 140 are perlite particle layers. The heat insulation plate 130 is an asbestos plate. The inner lining layer 110 is a high-temperature-resistant concrete layer. A combustion disc 160 is arranged in the combustion chamber 101 of the furnace body 100, and a plurality of fuel nozzles 161 are uniformly arranged on the combustion disc 160. An annular bearing plate 162 is arranged on the side wall of the combustion disc 160. In the embodiment, the combustion disc 160 is a cylindrical structure. The annular bearing plate 162 is integrally formed with the combustion disc 160. A plurality of oxygen nozzles 163 are uniformly arranged on the annular bearing plate 162. The jet direction of each oxygen nozzle 163 is arranged towards the space above the combustion disc 160.

[0029] The flue gas treatment mechanism 200 comprises a heating water tank 210, a serpentine heating pipe 220, a flue gas discharge pipe 230, a flue gas filter 240, and a drainage assembly 250. The heating water tank 210 is provided with a temperature sensor 211 and a liquid level sensor 212. The top of the heating water tank 210 is provided with a water inlet pipe 213, and the water inlet pipe 213 is provided with a water inlet valve 214. The water inlet pipe 213 is in communication with an external water source pipe. The serpentine heating pipe 220 is arranged at the bottom of the heating water tank 210, the input end of the serpentine heating pipe 220 is in communication with the smoke pipe 170 of the furnace body 100, and the output end of the serpentine heating pipe 220 is in communication with the input end of the flue gas discharge pipe 230. The flue gas filter 240 is arranged at the end of the flue gas discharge pipe 230 exposed to the heating water tank 210. The drainage assembly 250 comprises a pumping pump 251 and a pumping pipe 252. In the embodiment, the pumping pump 251 is a centrifugal pump. In another embodiment, the pumping pump 251 is an axial flow pump. In yet another embodiment, the pumping pump 251 is a mixed flow pump. The pumping pump 251 is arranged at the bottom of the heating water tank 210, the output end of the pumping pump 251 is in communication with the pumping pipe 252, and the output end of the pumping pipe 252 is provided with a drainage valve 253.

[0030] The temperature sensor 211, the liquid level sensor 212, the pumping pump 251, the water inlet valve 214, and the drainage valve 253 are electrically connected with the control mechanism 300. In the embodiment, the control mechanism 300 is connected with the outer wall of the heating water tank 210. It should be noted that, in the embodiment, the control mechanism 300 is a lower computer, specifically, the control mechanism 300 is a PLC. In another embodiment, the control mechanism 300 is a single-chip microcomputer. In other embodiments, the control mechanism 300 comprises an upper computer and a lower computer, and the upper computer is electrically connected with the lower computer. The control mechanism 300 controls the temperature sensor 211, the liquid level sensor 212, the pumping pump 251, the water inlet valve 214, and the drainage valve 253 to work coordinately, so as to ensure the working stability of the high-strength magnesium alloy energy-saving melting furnace 10.

[0031] The high-strength magnesium alloy energy-saving melting furnace 10 in the working process, each fuel nozzle 161 injection fuel and reducing agent, each oxygen nozzle 163 injection of oxygen, so as to ensure the full combustion of fuel, improve the heating efficiency and environmental performance of high-strength magnesium alloy energy-saving melting furnace 10. The side wall of the furnace body 100 from inside to outside includes the inner lining 110, the first heat insulation filling layer 120, the heat insulation plate 130, the second heat insulation filling layer 140 and the outer shell 150, which ensures the heat insulation performance of the furnace body 100 and reduces the heat loss of the furnace body 100. Thus, the high-strength magnesium alloy is efficiently melted. The flue gas generated during the working process of the high-strength magnesium alloy energy-saving melting furnace 10 enters the serpentine heating pipe 220, the exhaust pipe 230 and finally is discharged to the outside through the flue gas filter 240. In this process, the heat of the flue gas is used to heat the water in the heating water tank 210 through the serpentine heating pipe 220. When the water temperature in the heating water tank 210 reaches the preset temperature, the control mechanism 300 controls the operation of the pumping pump 251, and the pumping pump 251 discharges the hot water in the heating water tank 210 to the outside hot water cylinder through the pumping pipe 252. The high-strength magnesium alloy energy-saving melting furnace 10 recycles the heat of the flue gas generated during the combustion process, avoiding the waste of energy consumption.

[0032] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0033] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the present application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A high-strength magnesium alloy energy-saving smelting furnace, characterized in that, include: Furnace body, flue gas treatment mechanism and control mechanism; The sidewall of the furnace body, from the inside out, includes an inner lining layer, a first heat insulation filling layer, a heat insulation plate, a second heat insulation filling layer, and an outer shell; a combustion plate is provided in the combustion chamber of the furnace body, and a plurality of fuel nozzles are evenly arranged on the combustion plate; an annular support plate is provided on the sidewall of the combustion plate, and a plurality of oxygen nozzles are evenly arranged on the annular support plate; the injection direction of each oxygen nozzle is directed toward the space above the combustion plate; The flue gas treatment mechanism includes a heating water tank, a serpentine heating tube, an exhaust pipe, a flue gas filter, and a drainage assembly. The heating water tank is equipped with a temperature sensor and a liquid level sensor. An inlet pipe with an inlet valve is located at the top of the heating water tank and is connected to an external water source. The serpentine heating tube is located at the bottom of the heating water tank, with its input end connected to the flue gas pipe of the furnace body and its output end connected to the input end of the exhaust pipe. The flue gas filter is located at the end of the exhaust pipe exposed outside the heating water tank. The drainage assembly includes a pump and a pumping pipe. The pump is located at the bottom of the heating water tank, with its output end connected to the pumping pipe, and a drain valve at the output end of the pumping pipe. The temperature sensor, the liquid level sensor, the pump, the inlet valve, and the drain valve are all electrically connected to the control mechanism.

2. The high-strength magnesium alloy energy-saving smelting furnace according to claim 1, characterized in that, The first and second heat-insulating filling layers are perlite particle layers.

3. The high-strength magnesium alloy energy-saving smelting furnace according to claim 1, characterized in that, The insulation board is an asbestos board.

4. The high-strength magnesium alloy energy-saving smelting furnace according to claim 1, characterized in that, The inner lining is a high-temperature resistant concrete layer.

5. The high-strength magnesium alloy energy-saving smelting furnace according to claim 1, characterized in that, The combustion disc has a cylindrical structure.

6. The high-strength magnesium alloy energy-saving smelting furnace according to claim 1, characterized in that, The annular support plate and the combustion disc are integrally formed.

7. The high-strength magnesium alloy energy-saving smelting furnace according to claim 1, characterized in that, The control mechanism is connected to the outer wall of the heating water tank.

8. The high-strength magnesium alloy energy-saving smelting furnace according to claim 1, characterized in that, The pumping pump is a centrifugal pump.

9. The high-strength magnesium alloy energy-saving smelting furnace according to claim 1, characterized in that, The pumping pump is an axial flow pump.

10. The high-strength magnesium alloy energy-saving smelting furnace according to claim 1, characterized in that, The pumping pump is a mixed-flow pump.

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