Energy-saving smelting furnace equipment

Abstract

The utility model relates to the technical field of smelting furnaces, in particular to energy-saving smelting furnace equipment which comprises a furnace body, a first heat storage chamber, a second heat storage chamber and a switching valve, the first heat storage chamber and the second heat storage chamber are both communicated with the furnace body, and a flame gun is installed at the communication position. The end part of the first air inlet pipe is connected with an air cooler; the end part of the second air inlet pipe is connected with an air heater which is communicated with the furnace body; the end part of the first air outlet pipe is communicated with the first heat storage chamber, and the end part of the second air outlet pipe is communicated with the second heat storage chamber; the first air inlet pipe is communicated with the first air outlet pipe and the second air inlet pipe is communicated with the second air outlet pipe in a first air supply state, and the first air inlet pipe is communicated with the second air outlet pipe and the second air inlet pipe is communicated with the first air outlet pipe in a second air supply state; the switching valve is used for switching the first air supply state and the second air supply state regularly. The switching valve is adopted to achieve alternate heating and air supply preheating of the first heat storage chamber and the second heat storage chamber, so that the energy-saving smelting furnace equipment is simple in structure.

Description

Technical Field

[0001] The utility model relates to the technical field of melting furnaces, in particular to energy-saving melting furnace equipment. Background Art

[0002] Melting furnaces are used for metal smelting and consume a lot of energy, so the heat of flue gas is often recovered. In the prior art, two regenerators are respectively arranged on both sides of the aluminum alloy melting furnace, and the two regenerators are respectively connected to the melting furnace through fans, so that the flue gas in the melting furnace heats the heat storage bodies in the two regenerators respectively. For example, a high-efficiency aluminum melting device disclosed in CN210718632U is provided with multiple valves to realize the alternating heating and air supply preheating of the two regenerators, making the pipeline structure complicated. Utility Model Content

[0003] The utility model aims to provide an energy-saving smelting furnace equipment, which can realize alternating heating of two heat storage chambers and air supply preheating by switching valves, so that the structure of the energy-saving smelting furnace equipment is simple.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] An energy-saving smelting furnace device comprises a furnace body, a first heat storage chamber, a second heat storage chamber and a switching valve, wherein the first heat storage chamber and the second heat storage chamber are both connected to the furnace body and a flamethrower is installed at the connection point;

[0006] The switching valve is connected to a first air inlet pipe, a second air inlet pipe, a first air outlet pipe, and a second air outlet pipe, the end of the first air inlet pipe is connected to a cold air blower; the end of the second air inlet pipe is connected to a hot air blower, and the hot air blower is connected to the furnace body; the end of the first air outlet pipe is connected to the first heat storage chamber, and the end of the second air outlet pipe is connected to the second heat storage chamber;

[0007] The first air inlet pipe is connected to the first air outlet pipe and the second air inlet pipe is connected to the second air outlet pipe in a first air supply state, and the first air inlet pipe is connected to the second air outlet pipe and the second air inlet pipe is connected to the first air outlet pipe in a second air supply state;

[0008] The switching valve is used for switching between the first air supply state and the second air supply state at a regular interval.

[0009] In one embodiment, the first heat storage chamber and the second heat storage chamber are located on the same side of the furnace body, and the switching valve is located above the first heat storage chamber and the second heat storage chamber;

[0010] The cooling fan is located at the rear end of the side portion of the furnace body, and the hot air fan is located at the front end of the side portion of the furnace body.

[0011] In one embodiment, the switching valve comprises a valve cylinder, a valve plate and a valve cover; the valve cover seals the top of the valve cylinder, and the valve plate is located in the valve cylinder; a motor is installed on the top of the valve cover, and the valve plate is connected to the motor;

[0012] The first air inlet pipe, the second air inlet pipe, the first air outlet pipe and the second air outlet pipe are respectively connected to the valve cylinder, and the first air inlet pipe and the second air inlet pipe are directly opposite to each other, and the first air outlet pipe and the second air outlet pipe are directly opposite to each other.

[0013] In one embodiment, the inner wall of the valve cylinder is provided with a first raised band and a second raised band, and in the first air supply state, the edge of the valve plate abuts against the first raised band, and in the second air supply state, the edge of the valve plate abuts against the second raised band.

[0014] In one embodiment, a rotating shaft is disposed in the middle of the valve plate, a mounting groove matching the rotating shaft is disposed at the bottom of the valve cylinder, and the rotating shaft passes through the valve cover and is connected to the motor.

[0015] In one embodiment, a smoke hood is disposed on the top of the furnace body, and the hot air blower is connected to the upper part of the smoke hood through a smoke pipe.

[0016] In one embodiment, the two flame spray guns are respectively connected to a gas pipe, and the two gas pipes are respectively provided with a solenoid valve, and the two solenoid valves are used to control the two flame spray guns to spray high flames alternately.

[0017] The technical solution provided by the utility model may have the following beneficial effects:

[0018] The switching valve is used to switch the first air supply state and the second air supply state, so as to realize the alternating heating and air supply preheating of the first regenerator and the second regenerator, so that the structure of the energy-saving smelting furnace equipment is simple. The switching valve switches the first air supply state and the second air supply state at regular intervals, and in the whole working process of the smelting furnace, the first regenerator and the second regenerator are kept to have sufficient preheating capacity for the cold air. In addition, the flue gas heats the heat storage body in the first regenerator or the second regenerator and then returns to the smelting furnace, and the flue gas heat is reused again, further improving the energy-saving effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an energy-saving smelting furnace equipment according to an embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of the first air supply state of the energy-saving smelting furnace equipment;

[0021] Figure 3 Schematic diagram of the second air supply state of the energy-saving smelting furnace equipment;

[0022] Figure 4 is an axial cross-sectional view of the switching valve;

[0023] Figure 5 It is a schematic diagram of the cooperation between the valve plate and the valve cylinder of the switching valve;

[0024] Figure 6 It is a structural schematic diagram of the furnace body;

[0025] Among them, the furnace body 1, the smoke hood 101, the first heat storage chamber 2, the second heat storage chamber 3, the switching valve 4, the valve cylinder 401, the valve plate 402, the valve cover 403, the first raised belt 404, the second raised belt 405, the motor 406, the rotating shaft 407, the first air inlet pipe 5, the second air inlet pipe 6, the first air outlet pipe 7, the second air outlet pipe 8, the cold air blower 9, the hot air blower 10, the flamethrower 11, the gas pipe 12, and the smoke pipe 13. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of the features, and are used to distinguish and describe features, without distinction of order or importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Combine the following Figures 1 to 6 , describing an energy-saving smelting furnace equipment according to an embodiment of the utility model.

[0030] An energy-saving smelting furnace device comprises a furnace body 1, a first regenerator 2, a second regenerator 3 and a switching valve 4, wherein the first regenerator 2 and the second regenerator 3 are both connected to the furnace body 1 and a flamethrower 11 is installed at the connection point;

[0031] The switching valve 4 is connected to the first air inlet pipe 5, the second air inlet pipe 6, the first air outlet pipe 7 and the second air outlet pipe 8. The end of the first air inlet pipe 5 is connected to the cold air blower 9; the end of the second air inlet pipe 6 is connected to the hot air blower 10, and the hot air blower 10 is connected to the furnace body 1; the end of the first air outlet pipe 7 is connected to the first heat storage chamber 2, and the end of the second air outlet pipe 8 is connected to the second heat storage chamber 3;

[0032] The first air inlet pipe 5 is connected to the first air outlet pipe 7 and the second air inlet pipe 6 is connected to the second air outlet pipe 8 in the first air supply state; the first air inlet pipe 5 is connected to the second air outlet pipe 8 and the second air inlet pipe 6 is connected to the first air outlet pipe 7 in the second air supply state;

[0033] The switching valve 4 is used to switch between the first air supply state and the second air supply state at a regular interval.

[0034] In the present invention, the switching valve 4 is used to switch the first air supply state and the second air supply state, so as to realize the alternating heating and air supply preheating of the first heat storage chamber 2 and the second heat storage chamber 3. Figure 2 and Figure 3 In the first air supply state, the cold air blower 9 sends outside air into the first regenerator 2, the first regenerator 2 preheats the outside air, and the hot air blower 10 sends flue gas into the second regenerator 3, and the hot flue gas heats the regenerator in the second regenerator 3; in the second air supply state, the cold air blower 9 sends outside air into the second regenerator 3, the second regenerator 3 preheats the outside air, and the hot air blower 10 sends flue gas into the first regenerator 2, and the hot flue gas heats the regenerator in the first regenerator 2. The switching valve 4 switches the first air supply state and the second air supply state at regular intervals, and in the entire operation process of the smelting furnace, the first regenerator 2 and the second regenerator 3 are kept to have sufficient preheating capacity for cold air. In addition, the flue gas heats the regenerator in the first regenerator 2 or the second regenerator 3 and then returns to the smelting furnace, and the flue gas heat is reused again, further improving the energy saving effect.

[0035] In one embodiment of the utility model, the first regenerator 2 and the second regenerator 3 are located on the same side of the furnace body 1, and the switching valve 4 is located above the first regenerator 2 and the second regenerator 3; the cold air blower 9 is located at the rear end of the side of the furnace body 1, and the hot air blower 10 is located at the front end of the side of the furnace body 1. In this embodiment, the first regenerator 2, the second regenerator 3, the cold air blower 9 and the hot air blower 10 are all located at the side of the furnace body 1, which shortens the length of the air inlet and outlet ducts, thereby achieving the effect of reducing wind resistance and reducing heat loss of flue gas in the duct.

[0036] Reference Figure 4 and Figure 5 Specifically, the switching valve 4 includes a valve cylinder 401, a valve plate 402 and a valve cover 403; the valve cover 403 closes the top of the valve cylinder 401, and the valve plate 402 is located in the valve cylinder 401; a motor 406 is installed on the top of the valve cover 403, and the valve plate 402 is connected to the motor 406; the first air inlet pipe 5, the second air inlet pipe 6, the first air outlet pipe 7 and the second air outlet pipe 8 are respectively connected to the valve cylinder 401, and the first air inlet pipe 5 and the second air inlet pipe 6 are directly opposite to each other, and the first air outlet pipe 7 and the second air outlet pipe 8 are directly opposite to each other. The width of the valve plate 402 corresponds to the diameter of the valve cylinder 401. When one side of the valve plate 402 is located between the first air inlet pipe 5 and the second air outlet pipe 8 and the other side is located between the second air inlet pipe 6 and the first air outlet pipe 7, the pipeline connection is in the first air supply state; when one side of the valve plate 402 is located between the first air inlet pipe 5 and the first air outlet pipe 7 and the other side is located between the second air inlet pipe 6 and the second air outlet pipe 8, the pipeline connection is in the second air supply state. The valve plate 402 can be rotated 90° to realize the switching between the first air supply state and the second air supply state, and the switching valve 4 has a simple structure.

[0037] Preferably, the inner side wall of the valve cylinder 401 is provided with a first raised belt 404 and a second raised belt 405. In the first air supply state, the edge of the valve plate 402 abuts against the first raised belt 404, and in the second air supply state, the edge of the valve plate 402 abuts against the second raised belt 405, so as to improve the sealing effect between the valve plate 402 and the valve cylinder 401. Exemplarily, the cross-sections of the first raised belt 404 and the second raised belt 405 are arc-shaped, and the raised belts are obtained by welding or stamping.

[0038] In one embodiment of the utility model, a rotating shaft 407 is provided in the middle of the valve plate 402, and a mounting groove for the rotating shaft 407 is provided at the bottom of the valve cylinder 401. The rotating shaft 407 passes through the valve cover 403 and is connected to the motor 406. The setting of the rotating shaft 407 realizes the positioning of the valve plate 402 and the connection with the driving mechanism. Preferably, two sides of the valve plate 402 are respectively installed with reinforcing ribs to ensure that the valve plate 402 does not deform.

[0039] Reference Figure 6 In one embodiment of the utility model, a smoke hood 101 is provided on the top of the furnace body 1, and the hot air blower 10 is connected to the upper part of the smoke hood 101 through a smoke pipe 13. The smoke in the smoke hood 101 is extracted and introduced into the heat storage chamber, which can avoid the turbulence caused by the smoke extraction in the furnace body 1 and ensure the flame spraying effect of the flamethrower 11. It can be understood that a smoke exhaust port corresponding to the smoke hood 101 is provided on the top of the furnace body 1. The smoke hood 101 is also used to exhaust excess smoke.

[0040] In one embodiment of the utility model, two flamethrowers 11 are respectively connected to a gas pipe 12, and the two gas pipes 12 are respectively provided with a solenoid valve, and the two solenoid valves are used to control the two flamethrowers 11 to alternately spray high flames, thereby achieving the effect of saving energy while maintaining the temperature in the furnace body 1. Preferably, when preheated air is introduced into the first heat storage chamber 2 or the second heat storage chamber 3, the flamethrower 11 corresponding to the heat storage chamber is controlled to spray high flames to ensure the combustion effect of the fuel, even if the switching valve 4 and the two solenoid valves jointly control the air supply state and the flame spraying state.

[0041] Other structures and operations of an energy-saving smelting furnace device according to an embodiment of the utility model are known to ordinary technicians in the field and will not be described in detail here.

[0042] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0043] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An energy-saving smelting furnace equipment, characterized in that: It comprises a furnace body, a first heat storage chamber, a second heat storage chamber and a switching valve, wherein the first heat storage chamber and the second heat storage chamber are both connected to the furnace body and a flamethrower is installed at the connection point; The switching valve is connected to a first air inlet pipe, a second air inlet pipe, a first air outlet pipe, and a second air outlet pipe, the end of the first air inlet pipe is connected to a cold air blower; the end of the second air inlet pipe is connected to a hot air blower, and the hot air blower is connected to the furnace body; the end of the first air outlet pipe is connected to the first heat storage chamber, and the end of the second air outlet pipe is connected to the second heat storage chamber; The first air inlet pipe is connected to the first air outlet pipe and the second air inlet pipe is connected to the second air outlet pipe in a first air supply state, and the first air inlet pipe is connected to the second air outlet pipe and the second air inlet pipe is connected to the first air outlet pipe in a second air supply state; The switching valve is used for switching between the first air supply state and the second air supply state at a regular interval.

2. The energy-saving smelting furnace equipment according to claim 1 is characterized in that: The first heat storage chamber and the second heat storage chamber are located on the same side of the furnace body, and the switching valve is located above the first heat storage chamber and the second heat storage chamber; The cooling fan is located at the rear end of the side portion of the furnace body, and the hot air fan is located at the front end of the side portion of the furnace body.

3. The energy-saving smelting furnace equipment according to claim 1 is characterized in that: The switching valve comprises a valve cylinder, a valve plate and a valve cover; the valve cover seals the top of the valve cylinder, and the valve plate is located in the valve cylinder; a motor is installed on the top of the valve cover, and the valve plate is connected to the motor; The first air inlet pipe, the second air inlet pipe, the first air outlet pipe and the second air outlet pipe are respectively connected to the valve cylinder, and the first air inlet pipe and the second air inlet pipe are directly opposite to each other, and the first air outlet pipe and the second air outlet pipe are directly opposite to each other.

4. The energy-saving smelting furnace equipment according to claim 3 is characterized in that: The inner side wall of the valve cylinder is provided with a first raised belt and a second raised belt. In the first air supply state, the edge of the valve plate abuts against the first raised belt, and in the second air supply state, the edge of the valve plate abuts against the second raised belt.

5. The energy-saving smelting furnace equipment according to claim 3 is characterized in that: A rotating shaft is arranged in the middle of the valve plate, a mounting groove matching the rotating shaft is arranged at the bottom of the valve cylinder, and the rotating shaft is connected to the motor after passing through the valve cover.

6. The energy-saving smelting furnace equipment according to claim 2, characterized in that: A smoke hood is arranged on the top of the furnace body, and the hot air blower is connected with the upper part of the smoke hood through a smoke pipe.

7. The energy-saving smelting furnace equipment according to any one of claims 1 to 6, characterized in that: The two flame spray guns are respectively connected to a gas pipe, and the two gas pipes are respectively provided with a solenoid valve, and the two solenoid valves are used to control the two flame spray guns to spray high flames alternately.

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