Infrared heating tin refining equipment

Abstract

The invention discloses infrared heating tin refining equipment. The infrared heating tin refining equipment comprises a stove body shell, a cone frustum, a pot body, an infrared heater, a thermocouple and a control cabinet, refractory liners are arranged on the bottom surface and the inner wall of an inner cavity of the stove body shell and form a stove chamber; the cone frustum is arranged at the bottom of the hearth; the pot body enters the hearth from the top opening of the stove body shell, and the bottom of the pot body is arranged at the top end of the cone frustum; the plurality of infrared heaters are positioned at the bottom of the hearth and are uniformly distributed along the side wall of the hearth; the thermocouple is arranged in the pot body; and the control cabinet is connected with the thermocouple and the infrared heater. According to the tin refining equipment, the heating temperature can be accurately controlled, and the pot body is uniformly heated.

Description

Technical Field

[0001] The present invention relates to the technical field of non-ferrous metal smelting equipment, and more specifically, to a tin refining equipment with infrared heating. Background Art

[0002] In the same industry, most of the heating methods of tin refining pots adopt methods such as burning coal, gas, natural gas, electric heating, diesel, etc. In the metallurgical industry, at the present stage, for the heating of tin heating pots, natural gas heating technology is mostly used. During the heating process, the fuel consumption and air volume are adjusted through the valve opening to control the temperature of the molten metal in the pot. However, this traditional heating method has the following problems:

[0003] 1. The traditional heating method controls the temperature by adjusting the fuel consumption and air volume, but this method is difficult to achieve precise temperature control, with low thermal efficiency, high energy consumption, and high carbon emissions.

[0004] 2. The traditional heating method easily causes uneven heating of the pot body. Due to the strong heat exchange in the heated part, it is easy to carbonize, thus reducing the service life of the pot body.

[0005] 3. During the heating process, it is necessary to keep the furnace chamber in a negative pressure to timely discharge the toxic and harmful gases generated during combustion. In this process, not only a large amount of energy is lost, but also safety and environmental protection facilities need to be equipped.

[0006] Therefore, it is an urgent problem for those skilled in the art to develop a tin refining equipment with infrared heating that has precise temperature control and uniform heating of the pot body. Summary of the Invention

[0007] In view of this, the present invention provides a tin refining equipment with infrared heating that has precise temperature control and uniform heating of the pot body.

[0008] To achieve the above object, the present invention adopts the following technical solutions:

[0009] A tin refining equipment with infrared heating, comprising:

[0010] A furnace body shell, where refractory linings are provided on the bottom surface and inner wall of the inner cavity of the furnace body shell, and the refractory linings form a furnace chamber;

[0011] A frustum of a cone, which is arranged at the bottom of the furnace chamber;

[0012] A pot body, which is placed into the furnace chamber from the top opening of the furnace body shell, and the bottom of the pot body is placed on the top end of the frustum of the cone;

[0013] Infrared heaters, a plurality of the infrared heaters are located at the bottom of the furnace chamber and are evenly distributed along the side wall of the furnace chamber;

[0014] A thermocouple, which is placed inside the pot body;

[0015] A control cabinet, which is connected to the thermocouple and the infrared heater.

[0016] The beneficial effects of adopting the above technical solution are as follows: it can achieve precise control of the temperature of the tin liquid to meet different process requirements; the infrared heaters are evenly distributed along the side wall of the hearth, so that the pot body has a large and uniform heating area, extending the service life of the pot body; the infrared heating method has no noise and no flue gas emission, reducing energy consumption loss and eliminating the need for additional safety and environmental protection facilities.

[0017] Preferably, heat insulation layers are provided at the top of the frustum of a cone and at the side wall of the hearth. The heat insulation layers reduce heat dissipation and improve heat utilization efficiency.

[0018] Preferably, a smoke collecting hood is provided to cover the top of the pot body.

[0019] Preferably, a smoke exhaust pipe is provided on the smoke collecting hood.

[0020] Preferably, a pot rim is provided at the edge of the pot body, and the pot rim overlaps on the top of the outer shell of the hearth body.

[0021] Preferably, a leakage alarm device is provided on the top of the heat insulation layer below the pot body. The leakage alarm device can issue an alarm in time when the pot body leaks, avoiding safety accidents caused by the leakage of tin liquid.

[0022] Preferably, the leakage alarm device includes: a liquid level controller, a buzzer and wires; one ends of the two wires are both connected to the liquid level controller, and the other ends are in a disconnected state. The liquid level controller is connected to the buzzer and an external power supply.

[0023] It can be seen from the above technical solution that compared with the prior art, the present invention discloses an infrared heating tin refining device, and its beneficial effects are as follows:

[0024] (1) By cooperating the infrared heater and the thermocouple with the control cabinet, precise control of the temperature of the tin liquid can be achieved, meeting different process requirements. At the same time, the heating process has no noise and no emissions, high thermal efficiency, and reduces energy consumption loss;

[0025] (2) The infrared heaters are evenly distributed along the side wall of the hearth, so that the pot body has a large and uniform heating area, extending the service life of the pot body;

[0026] (3) Adopting the infrared heating method, there is no flue gas emission, eliminating the need for complex safety and environmental protection facilities, and reducing environmental pollution;

[0027] (4) A leakage alarm device is provided, which can issue an alarm in time when the pot body leaks, avoiding safety accidents caused by the leakage of tin liquid. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0029] Figure 1 It is a schematic structural diagram of the tin refining equipment provided by the present invention;

[0030] Figure 2 It is a circuit diagram of the leakage alarm device provided by the present invention;

[0031] Figure 3 It is a control schematic diagram of the control cabinet controlling the infrared heater provided by the present invention.

[0032] Among them, in the figure,

[0033] 1 - Furnace body shell; 2 - Refractory lining; 3 - Furnace chamber; 4 - Frustum; 5 - Pot body; 6 - Infrared heater; 7 - Thermocouple; 8 - Control cabinet; 9 - Heat insulation layer; 10 - Smoke collecting hood; 11 - Exhaust pipe; 12 - Liquid level controller; 13 - Buzzer; 14 - Wire. Detailed Embodiments

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0035] The embodiment of the present invention discloses an infrared heating tin refining equipment, including:

[0036] The furnace body shell 1, refractory linings 2 are provided on the bottom surface and inner wall of the inner cavity of the furnace body shell 1, and the refractory linings 2 form a furnace chamber 3;

[0037] The frustum 4 is arranged at the bottom of the furnace chamber 3;

[0038] The pot body 5 is placed into the furnace chamber 3 from the top opening of the furnace body shell 1, and the bottom of the pot body 5 is placed at the top of the frustum 4;

[0039] The infrared heaters 6, a plurality of infrared heaters 6 are located at the bottom of the hearth 3 and are evenly distributed along the side wall of the hearth 3;

[0040] The thermocouple 7, the thermocouple 7 is placed inside the pot body 5;

[0041] The control cabinet 8, the control cabinet 8 is connected to the thermocouple 7 and the infrared heaters 6. It is widely applicable to the heating-up, heat preservation and casting processes of low melting point metals such as tin, lead and zinc. According to the melting capacity and melting requirements of the pot body 5, the present invention can flexibly set the output power of the infrared heaters 6, with a flexible setting method and good adaptability.

[0042] In order to further optimize the above technical solution, the infrared heaters 6 are evenly arranged, so that the heated pot body has a larger heating area, is heated evenly, and there is no noise, no emission and high thermal efficiency during the heating process.

[0043] In order to further optimize the above technical solution, heat insulation layers 9 are provided at the top of the frustum 4 and on the side wall of the hearth 3.

[0044] In order to further optimize the above technical solution, a smoke collecting hood 10 is provided on the top of the pot body 5.

[0045] In order to further optimize the above technical solution, a smoke exhaust pipe 11 is provided on the smoke collecting hood 10.

[0046] In order to further optimize the above technical solution, a pot rim is provided at the edge of the pot body 2, and the pot rim is lapped on the top of the stove body shell 1.

[0047] In order to further optimize the above technical solution, a leakage alarm device is provided on the top of the heat insulation layer 9 below the pot body 2.

[0048] In order to further optimize the above technical solution, the leakage alarm device includes: a liquid level controller 12, a buzzer 13 and a wire 14; one ends of the two wires 14 are both connected to the liquid level controller 12, and the other ends are in an open state. The liquid level controller 12 is connected to the buzzer 13 and an external power supply. An open circuit state exists between the two wires 14. When the pot body 5 has a leakage and the tin liquid leaks into the hearth 3, the wire 14 arranged below the pot body 5 is in a closed state due to the tin liquid, and the output end of the liquid level controller 12 has an output, then the buzzer 13 is driven to alarm.

[0049] To further optimize the above technical solution, the thermocouple 7 is movable and connected to the temperature controller. Set the required temperature on the temperature controller, start the control cabinet, and control the power regulator to adjust the output power according to the magnitude of the temperature difference. When the thermocouple 7 detects that the temperature of the tin liquid contained in the pot body 5 is lower than the preset lower limit value, it transmits the temperature information to the temperature controller, and the temperature controller starts the infrared heater 6 to heat the pot body 5; when it is higher than the preset upper limit value, the infrared heater 6 stops heating, thereby realizing the heating and heat preservation of the tin liquid. The temperature controller adjusts the output of the power regulator through the PID mode, which can achieve better energy-saving effects.

[0050] Working process:

[0051] Put the tin ingot or tin liquid to be refined into the pot body 5, and put the thermocouple 7 into the tin liquid to measure the temperature of the tin liquid. Connect the thermocouple 7 to the temperature controller, set the required heating temperature on the control cabinet 8 according to the process requirements, and turn on the infrared heater 6 for heating operation; when the thermocouple 7 detects that the temperature of the tin liquid contained in the pot body 5 is lower than the preset lower limit value, it transmits the temperature information to the temperature controller, and the temperature controller starts the infrared heater 6 to heat the pot body 5; when it is higher than the preset upper limit value, the infrared heater 6 stops heating, thereby realizing the heating and heat preservation of the tin liquid. If the pot body 5 leaks and the tin liquid leaks into the hearth 3, the leakage alarm device alarms for early warning. First, timely transport the tin liquid in the pot body 5 to the empty pot on the site, and then deal with the small amount of tin liquid in the hearth 3 after the temperature drops.

[0052] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0053] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An infrared heating tin refining equipment, characterized in that: include: A stove body shell, wherein the bottom surface and the inner wall of the inner cavity of the stove body shell are both provided with a refractory lining, and the refractory lining forms a stove chamber; A truncated cone, the truncated cone being arranged at the bottom of the stove chamber; A pot body, the pot body is inserted into the stove chamber from the top opening of the stove body shell, and the bottom of the pot body is placed on the top of the truncated cone; Infrared heaters, a plurality of the infrared heaters are located at the bottom of the stove chamber and are evenly distributed along the side walls of the stove chamber; A thermocouple, wherein the thermocouple is placed in the pot; A control cabinet is connected to the thermocouple and the infrared heater.

2. The infrared heating tin refining equipment according to claim 1 is characterized in that: The top of the truncated cone and the side wall of the stove chamber are both provided with a heat insulation layer.

3. The infrared heating tin refining equipment according to claim 1 is characterized in that: The top cover of the pot body is provided with a smoke collecting hood.

4. The infrared heating tin refining equipment according to claim 3 is characterized in that: The smoke collecting hood is provided with a smoke exhaust pipe.

5. The infrared heating tin refining equipment according to claim 1 is characterized in that: The edge of the pot body is provided with a pot rim, and the pot rim is overlapped with the top of the stove body shell.

6. The infrared heating tin refining equipment according to claim 2 is characterized in that: A material leakage alarm device is arranged on the top of the heat-insulating layer below the pot body.

7. The infrared heating tin refining equipment according to claim 6, characterized in that: The leakage alarm device comprises: a liquid level controller, a buzzer and wires; one end of the two wires is connected to the liquid level controller, and the other end is disconnected; the liquid level controller is connected to the buzzer and an external power supply.

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