Efficient metal melting intermediate frequency furnace

Abstract

The utility model discloses an efficient metal melting intermediate frequency furnace, which relates to the technical field of intermediate frequency furnaces and comprises an intermediate frequency furnace body, a furnace cover is arranged at the top of the intermediate frequency furnace body, a condensation pipeline is arranged on the furnace cover in a penetrating and sealing manner, and the other side of the condensation pipeline is connected with a zinc rain condenser through a flange. The zinc rain condenser and the vacuum siphon box body are additionally arranged on the intermediate frequency furnace body, volatile metal (such as zinc) can be recycled through the zinc rain condenser, copper and other non-volatile metal at the bottom of the intermediate frequency furnace body are sucked into the material storage crucible in the vacuum siphon box body through a vacuum siphon method, separation is achieved, and the recovery efficiency is improved. After separation, feeding can be performed step by step by opening a feeding valve, continuous production of the metal melt is achieved, shutdown pouring is not needed in the whole process, heat energy loss caused by frequent furnace shutdown in a traditional process is avoided, comprehensive energy consumption can be effectively reduced, meanwhile, thermal stress damage of refractory materials is reduced, and the service life of equipment is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of intermediate frequency furnace, concretely to a high -efficient metal melting and separating intermediate frequency furnace. BACKGROUND

[0002] The current metal melting and separating intermediate frequency furnace is the key equipment of metallurgical industry, mainly comprising induction heating system, composite refractory furnace lining and hydraulic tilting mechanism three core modules. Its working principle is that the metal raw material is melted through electromagnetic induction heating, and then the molten metal and slag are separated and discharged by means of the tilting mechanism of the furnace body. The technology adopts intermittent operation mode, can meet the melting and separating demand of various metal materials, and has wide application in the fields of casting and recycled metal recovery.

[0003] The traditional intermittent tilting process has significant energy efficiency defects: each discharge operation needs to stop the furnace completely, and the internal products are usually discharged in the form of tilting. In the tilting process, it is difficult to accurately control the amount and speed of discharge, which can easily cause the product to splash, resulting in resource waste and safety hazards. Moreover, the tilting operation usually needs to pause the smelting process, which cannot realize continuous production. In addition, stopping the furnace reduces the production efficiency. After the furnace body is reset, it needs to be re-heated to the working temperature (usually 1200-1600 DEG C), which causes a large amount of heat loss. Frequent temperature fluctuations also accelerate the aging of refractory materials and increase maintenance costs. Therefore, we propose a high-efficiency metal melting and separating intermediate frequency furnace. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art, provide a high-efficiency metal melting and separating intermediate frequency furnace, which can perform metal melting and separating without stopping the machine, and effectively solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a high-efficiency metal melting and separating intermediate frequency furnace, which comprises an intermediate frequency furnace body, a furnace cover is arranged at the top of the intermediate frequency furnace body, a condensation pipeline is arranged in the furnace cover in a penetrating and sealing mode, a zinc rain condenser is connected to the other side of the condensation pipeline through a flange, a vacuum siphon box body is arranged on one side of the intermediate frequency furnace body, a separation pipeline is arranged in communication between the inside of the vacuum siphon box body and the intermediate frequency furnace body, and a vacuum pump is connected to one side of the vacuum siphon box body through a vacuum extraction pipe

[0006] Further, a storage crucible is arranged in the vacuum siphon box body, the vacuum siphon box body is provided with a detachable sealing door body, and the sealing door body is connected to the vacuum siphon box body through a door body fixed lock body.

[0007] Further, the separation pipeline is in an inverted U-shaped structure, one end of the separation pipeline inside the vacuum siphon box body faces the storage crucible, and the other end of the separation pipeline inside the intermediate frequency furnace body is inserted into the bottom of the intermediate frequency furnace body.

[0008] Furthermore, a feeding hopper that communicates with the interior of the medium-frequency furnace body is fixedly connected to one side wall of the medium-frequency furnace body, and a feeding valve is connected to the feeding hopper via a flange.

[0009] Furthermore, an air supply pipe is fixedly connected to the bottom of one side of the zinc rain condenser, and an exhaust fan is fixedly connected to one end of the air supply pipe. The exhaust fan is connected to the zinc rain condenser through the air supply pipe.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This high-efficiency metal melting and separation medium-frequency furnace has the following advantages:

[0011] By adding a zinc rain condenser and a vacuum siphon box to the medium-frequency furnace body, volatile metals (such as zinc) can be recovered through the zinc rain condenser. Copper and other non-volatile metals at the bottom of the medium-frequency furnace body are sucked into the storage crucible inside the vacuum siphon box by vacuum siphon method, achieving separation. After separation, the metal melt can be continuously produced by gradually adding material by opening the feeding valve. The whole process does not require stopping the machine to pour out the metal, avoiding the heat loss caused by frequent furnace shutdowns in traditional processes. The overall energy consumption can be effectively reduced, while reducing thermal stress damage to refractory materials and extending the equipment life. Attached Figure Description

[0012] Fig. 1 This is a structural diagram of the present invention;

[0013] Fig. 2 This is a cross-sectional view of the medium-frequency furnace body and the vacuum siphon box in this utility model.

[0014] In the diagram: 1. Medium frequency furnace body; 101. Feeding hopper; 102. Feeding valve; 103. Furnace cover; 2. Zinc rain condenser; 3. Exhaust gas fan; 4. Air supply pipe; 5. Condensation pipe; 6. Separation pipe; 7. Vacuum siphon box; 701. Sealing door; 702. Door fixing lock; 8. Vacuum pipe; 9. Vacuum pump; 10. Storage crucible. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figs. 1-2This embodiment provides a technical solution: a high-efficiency metal melting and separation medium-frequency furnace, including a medium-frequency furnace body 1, a furnace cover 103 on the top of the medium-frequency furnace body 1, and a condensation pipe 5 that is sealed through the furnace cover 103. A zinc rain condenser 2 is connected to the other side of the condensation pipe 5 through a flange. A vacuum siphon box 7 is provided on one side of the medium-frequency furnace body 1. A separation pipe 6 is provided between the inside of the vacuum siphon box 7 and the medium-frequency furnace body 1. A vacuum pump 9 is connected to one side of the vacuum siphon box 7 through a vacuum pipe 8. When the vacuum pump 9 is working, it can create a negative pressure inside the vacuum siphon box 7. Copper and other non-volatile metals at the bottom of the medium-frequency furnace body 1 are sucked into the storage crucible 10 inside the vacuum siphon box 7 by vacuum siphoning, thereby achieving separation.

[0017] In this embodiment, a storage crucible 10 is also provided inside the vacuum siphon box 7. The vacuum siphon box 7 has a detachable sealing door 701, and the sealing door 701 is connected to the vacuum siphon box 7 through a door fixing lock 702, which facilitates the replacement of the storage crucible 10 when it is full of material.

[0018] Among them, the separation pipe 6 is an inverted U-shaped structure. One end of the separation pipe 6 is located inside the vacuum siphon box 7 and faces the storage crucible 10. The other end of the separation pipe 6 is located inside the medium frequency furnace body 1 and is inserted into the bottom of the medium frequency furnace body 1.

[0019] The medium-frequency furnace body 1 has a feeding hopper 101 fixedly connected to one side wall, which communicates with the interior of the medium-frequency furnace body 1. The feeding hopper 101 is connected to a feeding valve 102 via a flange, and the feeding process can be controlled by the feeding valve 102.

[0020] Among them, the bottom of one side of the zinc rain condenser 2 is fixedly connected to the air supply pipe 4, and the exhaust gas fan 3 is fixedly connected to one end of the air supply pipe 4. The exhaust gas fan 3 is connected to the zinc rain condenser 2 through the air supply pipe 4. The exhaust gas fan 3 discharges the high temperature exhaust gas generated by the combustion of the medium frequency furnace body 1 in a timely manner, reduces the temperature inside the equipment, reduces the thermal stress effect of high temperature on boiler pipes and other components, and extends the service life of the equipment.

[0021] The working principle of the high-efficiency metal melting medium-frequency furnace provided by this utility model is as follows: Metal raw materials are fed into the furnace body 1 through the feeding hopper 101 and sealed by closing the feeding valve 102. The medium-frequency induction heating system is started to create a high-temperature environment inside the furnace, and the metal melts rapidly. Volatile metals such as zinc will enter the zinc rain condenser 2 through the condensation pipe 5 and be recovered through condensation. The external PLC controller starts the vacuum pump 9 to work, which can create a negative pressure inside the vacuum siphon box 7. Copper and other non-volatile metals at the bottom of the furnace body 1 are sucked into the storage crucible 10 inside the vacuum siphon box 7 by vacuum siphoning, and separation is achieved. After separation, the feeding valve 102 can be opened to gradually add materials to achieve continuous production of molten metal without stopping, resetting or cooling the medium-frequency furnace.

[0022] It is worth noting that the external PLC controller disclosed in the above embodiments is specifically a Siemens S7-200. The vacuum pump 9 and zinc rain condenser 2 can be freely configured according to the actual application scenario. The operation of the external PLC controller and vacuum pump 9 adopts the methods commonly used in the prior art.

[0023] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A high-efficiency metal melting and separation medium-frequency furnace, characterized in that: The furnace includes a medium-frequency furnace body (1), a furnace cover (103) on the top of the medium-frequency furnace body (1), and a condensing pipe (5) is provided through the furnace cover (103) and sealed. A zinc rain condenser (2) is connected to the other side of the condensing pipe (5) via a flange. A vacuum siphon box (7) is provided on one side of the medium-frequency furnace body (1). A separation pipe (6) is provided between the inside of the vacuum siphon box (7) and the medium-frequency furnace body (1). A vacuum pump (9) is connected to one side of the vacuum siphon box (7) via a vacuum pipe (8).

2. The high-efficiency metal melting and separation medium-frequency furnace according to claim 1, characterized in that: It also includes a storage crucible (10) disposed inside the vacuum siphon box (7), the vacuum siphon box (7) having a detachable sealing door (701), and the sealing door (701) being connected to the vacuum siphon box (7) via a door fixing lock (702).

3. The high-efficiency metal melting and separation medium-frequency furnace according to claim 2, characterized in that: The separation pipe (6) is an inverted U-shaped structure. The separation pipe (6) is located inside the vacuum siphon box (7) with one end facing the storage crucible (10). The separation pipe (6) is located inside the medium frequency furnace body (1) with one end inserted into the bottom of the medium frequency furnace body (1).

4. The high-efficiency metal melting and separation medium-frequency furnace according to claim 1, characterized in that: A feeding hopper (101) communicating with the interior of the medium frequency furnace body (1) is fixedly connected to one side wall of the medium frequency furnace body (1), and a feeding valve (102) is connected to the feeding hopper (101) via a flange.

5. The high-efficiency metal melting and separation medium-frequency furnace according to claim 1, characterized in that: The bottom of one side of the zinc rain condenser (2) is fixedly connected to an air supply pipe (4), and one end of the air supply pipe (4) is fixedly connected to an exhaust gas fan (3). The exhaust gas fan (3) is connected to the zinc rain condenser (2) through the air supply pipe (4).

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