A DC ore-fired furnace and a rectifier transformer thereof

Abstract

The present invention belongs to the technical field of rectifier transformers, and specifically is a direct current ore-fired furnace and a rectifier transformer thereof, comprising a transformer body, wherein the transformer body is symmetrically and fixedly connected with an outer shell, wherein a plurality of fans are fixedly connected inside each of the outer shells, an electric heating tube is arranged on one side of the fan, wherein the electric heating tube is fixedly connected to the inner wall of the outer shell, and a movable plate is arranged on one side of the electric heating tube, wherein the movable plate is slidably connected to the inside of the outer shell, wherein a plurality of heat sinks are slidably connected inside the movable plate, wherein a sealing gasket is slidably arranged on each of the heat sinks, and wherein the sealing gasket is fixedly connected to the transformer body, and the heat sink of the present invention can transfer heat to the oil inside the transformer body, so that the oil inside the transformer body can be preheated, thereby avoiding the problem that the oil inside the transformer body becomes viscous due to low temperature.

Description

Technical Field

[0001] The invention belongs to the technical field of rectifier transformers, in particular to a direct current ore-fired furnace and a rectifier transformer thereof. Background Art

[0002] DC submerged arc furnace is mainly used to produce high-quality alloys, such as ferrosilicon, ferromanganese, ferrochrome, etc. DC submerged arc furnace needs DC power supply when in use, and the power grid usually provides AC power. Therefore, a rectifier transformer is needed to convert AC power into DC power to meet the power supply needs of DC submerged arc furnace.

[0003] The existing rectifier transformer is filled with transformer oil. When the transformer is working, the oil absorbs and takes away the heat generated by the winding and the core. Then the oil pump extracts the hot oil and sends it to the external cooler for cooling. The cooled oil is then sent back to the transformer to continue absorbing heat, thereby achieving heat dissipation for the rectifier transformer.

[0004] When the prior art is used in a cold environment, the oil inside the transformer body becomes viscous due to the low temperature. At this time, the fluidity of the oil inside the transformer body deteriorates, causing the oil pump to pump less oil, thereby causing a decrease in heat dissipation efficiency.

[0005] To this end, the present invention provides a DC ore-fired furnace and a rectifier transformer thereof. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a rectifier transformer described in the present invention includes a transformer body, the transformer body is symmetrically fixedly connected with an outer shell, each of the outer shells is fixedly connected to a plurality of fans, one side of the fan is provided with an electric heating pipe, the electric heating pipe is fixedly connected to the inner wall of the outer shell, one side of the electric heating pipe is provided with a movable plate, the movable plate is slidably connected to the inside of the outer shell, the inside of the movable plate is slidably connected with a plurality of cooling rods, each of the cooling rods is slidably provided with a sealing gasket, the sealing gasket is fixedly connected to the transformer body, when the weather is cold and the oil inside the transformer body becomes viscous, the cooling rod is heated and driven to penetrate the transformer body so that the cooling rod enters the inside of the transformer body, the cooling rod can transfer heat to the inside of the transformer body, and the oil can be preheated.

[0008] Preferably, the inner wall of the shell is rotatably connected to a first cam, the inner wall of the shell is fixedly connected to a transmission rod, both ends of the transmission rod are rotatably connected to second cams, a connecting rod is rotatably connected between the first cam and the second cam, one end of the connecting rod is rotatably connected to one side of the movable plate, the outer wall of the shell is fixedly connected to a motor, and the output end of the motor is fixedly connected to one end of the first cam.

[0009] Preferably, each of the heat sinks is slidably connected to a sealing plate, a through hole is provided inside the sealing plate, and a plurality of baffles are slidably connected to one side of the sealing plate. When both sides of the plurality of baffles are in a fitted state, the through hole can be blocked.

[0010] Preferably, a slide groove is provided inside the sealing plate, a slider is slidably connected inside the slide groove, and a first spring is fixedly connected between the slider and the slide groove.

[0011] Preferably, a rotating rod is rotatably arranged inside the heat sink, one end of the rotating rod is fixedly connected to a rotating plate, an arc groove is arranged inside the rotating plate, a magnetic rod is slidably connected inside the arc groove, and the magnetic rod passes through the baffle and the slider and is fixedly connected inside.

[0012] Preferably, a protective shell is fixedly connected to the surface of the rotating rod, an electromagnet is fixedly connected to the inside of the protective shell, the electromagnet and the magnetic rod are attracted to each other after power is turned on, a connecting rod is fixedly connected to one side of the sealing plate, a second spring is fixedly connected between the connecting rod and the heat sink, and a drainage one-way valve is fixedly connected to the lower surface of the heat sink.

[0013] Preferably, one end of the liquid discharge one-way valve is fixedly connected to a liquid inlet pipe, one end of the liquid inlet pipe is fixedly connected to a return rack, the return rack is fixedly connected to the inside of the shell, one end of the return rack is fixedly connected to a return pipe, one end of the return pipe passes through both sides of the transformer body, and one side of the return rack is fixedly connected to one end of the rotating rod.

[0014] Preferably, a limiting groove is provided on the surface of the rotating rod, a protrusion is slidably connected inside the limiting groove, and the protrusion is fixedly connected inside the heat sink rod, the limiting groove includes a first spiral segment, a straight line segment is provided on one side of the first spiral segment, a second spiral segment is provided on one side of the straight line segment, and the first spiral segment, the straight line segment and the second spiral segment are connected.

[0015] Preferably, one end of the magnetic rod is slidably connected to a moving rod, one end of the moving rod is fixedly connected to a first scraper, a second scraper is slidably connected inside the first scraper, and a third spring is fixedly connected between the moving rod and the magnetic rod.

[0016] A DC ore-fired furnace comprises a rectifier transformer, the DC ore-fired furnace also comprises a furnace body, a furnace cover is installed on the furnace body, a furnace hood is installed on the furnace cover, a feeding device for conveying raw materials to the furnace body is installed above the furnace hood, an electrode lifting and pressing device for adjusting the position of the electrode in the furnace is arranged on one side of the feeding device, the electrode lifting and pressing device is installed on the furnace hood, an electrode is installed at the output end of the electrode lifting and pressing device, and the rectifier transformer is used to supply the energy required for the electrode to generate an arc.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. A DC ore-fired furnace and a rectifier transformer thereof described in the present invention are provided with a heat sink, which is heated into hot air by a fan. The hot air is transferred to the surface of the heat sink, and the heat sink can transfer heat to the oil inside the transformer body, so that the oil inside the transformer body can be preheated, thereby avoiding the problem that the oil inside the transformer body becomes viscous due to low temperature.

[0019] 2. The DC electric arc furnace and its rectifier transformer described in the present invention drive the movement of the heat sink rod by providing a sealing plate and a baffle, and the heat sink rod sends oil into the interior thereof through the through hole, and then the baffle slides and drives the sealing plate to block, so that the interior of the heat sink rod is sealed, and then the baffle drives the sealing plate to move inside the heat sink rod, at which time the sealing plate and the baffle push the oil entering the interior of the heat sink rod, and then the oil is discharged into the reflux rack through the drainage one-way valve, and finally flows to both sides of the transformer body through the reflux pipe. This device can drive the oil inside the transformer to flow, so as to ensure that the oil inside the transformer is more evenly heated and cooled.

[0020] 3. The DC electric arc furnace and the rectifier transformer thereof described in the present invention are provided with a first scraper and a second scraper. The first scraper and the second scraper can clean the sludge attached to the surface of the protective shell, and can also clean the sludge attached to one end of the magnetic rod, thereby preventing the sludge from adhering to the surface of the magnetic rod and the protective shell, resulting in a decrease in the magnetic adsorption force, making it difficult to seal the heat sink, and causing the heat sink to be unable to drive the oil to flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 It is the overall structure diagram of the DC ore-fired furnace of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the transformer body of the present invention;

[0024] Figure 3 is a structural cross-sectional view of the housing of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the heat sink of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the movable plate of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the movable plate and the heat sink of the present invention;

[0028] Figure 7 is a structural cross-sectional view of the heat sink of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the rotating rod and the sealing plate of the present invention;

[0030] Fig. 9 The present invention Figure 8 A partial enlarged view of middle A;

[0031] Fig.10 It is a structural schematic diagram of the sealing plate and the rotating plate of the present invention;

[0032] Fig.11 It is a structural schematic diagram of the heat sink of the present invention;

[0033] Fig.12 It is a structural schematic diagram of the rotating rod of the present invention;

[0034] Fig.13 It is a schematic diagram of the protective shell structure of the present invention.

[0035] In the figure: 1, transformer body; 11, sealing pad; 2, housing; 21, fan; 22, electric heating pipe; 3, heat sink; 31, sealing plate; 311, slide groove; 312, first spring; 313, slider; 32, through hole; 33, baffle; 331, magnetic rod; 332, first scraper; 333, second scraper; 334, moving rod; 335, third spring; 34, connecting rod; 341, second spring; 35, discharge check valve; 36, protrusion; 4, moving plate ; 41. Motor; 42. First cam; 43. Connecting rod; 44. Second cam; 5. Reflux rack; 51. Reflux pipe; 52. Liquid inlet pipe; 6. Furnace body; 61. Furnace cover; 62. Furnace hood; 63. Electrode; 64. Feeding device; 65. Electrode lifting and pressing device; 7. Rotating rod; 71. Rotating plate; 711. Arc groove; 72. Protective shell; 721. Electromagnet; 73. Limiting groove; 731. First spiral segment; 732. Straight segment; 733. Second spiral segment. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0037] Embodiment 1

[0038] like Figures 1 to 13 As shown, a rectifier transformer described in an embodiment of the present invention includes a transformer body 1, on which a shell 2 is symmetrically fixedly connected, and a plurality of fans 21 are fixedly connected inside each of the shells 2, and an electric heating pipe 22 is arranged on one side of the fan 21, and the electric heating pipe 22 is fixedly connected to the inner wall of the shell 2, and a movable plate 4 is arranged on one side of the electric heating pipe 22, and the movable plate 4 is slidably connected to the inside of the shell 2, and a plurality of heat sinks 3 are slidably connected inside the movable plate 4, and a sealing gasket 11 is slidably arranged on each of the heat sinks 3, and the sealing gasket 11 is fixedly connected to the transformer body 1. When the weather is cold and the oil inside the transformer body 1 becomes viscous, the heat sink 3 is heated and driven to penetrate the transformer body 1 so that the heat sink 3 enters the inside of the transformer body 1, and the heat sink 3 can transfer heat to the inside of the transformer body 1, so as to preheat the oil.

[0039] Specifically, the existing rectifier transformer is filled with transformer oil. When the transformer is working, the oil absorbs and takes away the heat generated by the winding and the core. Then the oil pump extracts the hot oil and sends it to an external cooler for cooling. The cooled oil is then sent back to the transformer to continue absorbing heat, thereby achieving heat dissipation for the rectifier transformer.

[0040] When the prior art is used in a cold environment, the oil inside the transformer body 1 becomes viscous due to the low temperature. At this time, the fluidity of the oil inside the transformer body 1 deteriorates, causing the oil pump to pump less oil, thereby causing the problem of reduced heat dissipation efficiency.

[0041] In order to solve the above problems, the working principle of this embodiment is as follows: when used in a cold weather environment, the fan 21 and the electric heating tube 22 can be turned on, the fan 21 blows out airflow and is heated by the electric heating tube 22 to generate hot air, and the hot air blows to the surface of the shell 2 and the transformer body 1, so that the internal oil is preheated, and at the same time, the moving plate 4 is driven to drive multiple heat sinks 3 to reciprocate inside the transformer body 1, and the heat sink 3 is sealed by the sealing gasket 11. After the heat sink 3 is heated by the hot air, the heat can be transferred to the oil inside the transformer body 1, and the preheating of the oil is accelerated;

[0042] After the preheating is completed, when the transformer body 1 is used and generates a large amount of heat, the electric heating tube 22 can be turned off, and the fan 21 can blow out cold air to dissipate heat for the transformer body 1;

[0043] In this embodiment, the oil inside the transformer body 1 can be preheated by the heat sink 3. After preheating, the viscosity decreases and the fluidity is significantly enhanced. Therefore, the resistance faced by the oil pump when extracting oil is reduced, the load is reduced, and the heat dissipation efficiency of the oil circulation is improved. This can prevent the oil inside the transformer body 1 from becoming viscous due to low temperature, thereby causing the fluidity of the oil inside the transformer body 1 to deteriorate, resulting in a reduction in the amount of oil extracted by the oil pump, thereby causing the problem of reduced heat dissipation efficiency.

[0044] like Figure 3 and Figure 5 As shown, the inner wall of the shell 2 is rotatably connected to the first cam 42, the inner wall of the shell 2 is fixedly connected to a transmission rod, the two ends of the transmission rod are rotatably connected to the second cams 44, a connecting rod 43 is rotatably connected between the first cam 42 and the second cam 44, one end of the connecting rod 43 is rotatably connected to one side of the movable plate 4, the outer wall of the shell 2 is fixedly connected to a motor 41, and the output end of the motor 41 is fixedly connected to one end of the first cam 42.

[0045] Specifically, when it is necessary to drive the movable plate 4 to reciprocate, the motor 41 can be turned on, the motor 41 drives the first cam 42 and the second cam 44 to rotate, the first cam 42 and the second cam 44 drive the connecting rod 43 to rotate, the connecting rod 43 drives the movable plate 4 to reciprocate, the movable plate 4 drives a plurality of heat sinks 3 to reciprocate inside the transformer body 1, the heat sinks 3 reciprocate inside the transformer body 1, and the contact area with the oil can be increased, thereby improving the preheating and heat dissipation effect on the oil.

[0046] Embodiment 2

[0047] like Figures 7 to 9 As shown, compared with Example 1, another implementation of the present invention is: each of the heat sink rods 3 is slidably connected to the inside with a sealing plate 31, a through hole 32 is opened inside the sealing plate 31, and one side of the sealing plate 31 is slidably connected to a plurality of baffles 33, when both sides of the plurality of baffles 33 are in a fitted state, the through hole 32 can be blocked.

[0048] like Figure 7 As shown, a drain check valve 35 is fixedly connected to the lower surface of the heat sink 3, one end of the drain check valve 35 is fixedly connected to a liquid inlet pipe 52, one end of the liquid inlet pipe 52 is fixedly connected to a return frame 5, the return frame 5 is fixedly connected to the inside of the shell 2, one end of the return frame 5 is fixedly connected to a return pipe 51, one end of the return pipe 51 passes through both sides of the transformer body 1, and one side of the return frame 5 is fixedly connected to one end of the rotating rod 7.

[0049] Specifically, the above-mentioned heat sink 3 can preheat the oil and the heat generated by the iron core of the transformer body 1 when it is working can also preheat the oil, but the oil is in a viscous state and has poor fluidity. Therefore, only the oil near the iron core or the heat sink 3 will be heated, resulting in the oil inside the transformer body 1 cannot be preheated evenly, which will not only cause the problem of local overheating of the oil, but also cause the oil pump to transport the oil circulation efficiency to decrease, thereby causing the subsequent problem of reduced heat dissipation efficiency of the transformer body 1 when in use.

[0050] In order to solve the above problems, the working principle of the second embodiment of the present invention is as follows: under normal conditions, the through hole 32 is in an open state. Therefore, when the movable plate 4 drives the heat sink 3 to move toward the inside of the transformer body 1, the heat sink 3 drives the through hole 32 to move in the oil, and the oil enters the inside of the heat sink 3 through the through hole 32. When the heat sink 3 moves to the final distance inside the transformer body 1, the baffle 33 is driven to slide on the surface of the sealing plate 31. The baffle 33 can close the through hole 32, thereby closing the inside of the heat sink 3, thereby forming a sealed area inside the heat sink 3. Then, the sealing plate 31 is driven to slide inside the heat sink 3. The sealing plate 31 drives the baffle 33 to form a piston, so that the oil is discharged through the discharge check valve 35, and flows to the inside of the reflux rack 5 through the discharge check valve 35, and then flows to both sides of the transformer body 1 through the reflux rack 5.

[0051] The above-mentioned second embodiment can drive the oil into the interior of the heat sink 3 and simultaneously transport the oil to both sides of the transformer body 1, which can effectively improve the fluidity of the oil, so that the originally viscous and poorly fluid oil can be better preheated and circulated. At the same time, the heated oil is transported to other areas of the transformer body 1, which can achieve uniform preheating of the oil and avoid local overheating and reduced heat dissipation efficiency.

[0052] like Fig.10 As shown, a slide groove 311 is provided inside the sealing plate 31 , a slider 313 is slidably connected inside the slide groove 311 , and a first spring 312 is fixedly connected between the slider 313 and the slide groove 311 .

[0053] like Figure 8 As shown, a rotating rod 7 is rotatably arranged inside the heat sink 3, one end of the rotating rod 7 is fixedly connected to a rotating plate 71, an arc groove 71 is arranged inside the rotating plate 71, a magnetic rod 331 is slidably connected inside the arc groove 711, and the magnetic rod 331 passes through the baffle 33 and the slider 313 and is fixedly connected thereto.

[0054] like Fig.13As shown, a protective shell 72 is fixedly connected to the surface of the rotating rod 7, and an electromagnet 721 is fixedly connected to the inside of the protective shell 72. After power is turned on, the electromagnet 721 and the magnetic rod 331 are attracted to each other. A connecting rod 34 is fixedly connected to one side of the sealing plate 31, and a second spring 341 is fixedly connected between the connecting rod 34 and the heat sink 3.

[0055] like Fig.12 As shown, a limiting groove 73 is provided on the surface of the rotating rod 7, and a protrusion 36 is slidably connected inside the limiting groove 73, and the protrusion 36 is fixedly connected inside the heat sink 3. The limiting groove 73 includes a first spiral segment 731, and a straight line segment 732 is provided on one side of the first spiral segment 731, and a second spiral segment 733 is provided on one side of the straight line segment 732. The first spiral segment 731, the straight line segment 732 and the second spiral segment 733 are connected.

[0056] Specifically, the electromagnet 721 is turned on, and when the moving rod 334 drives the sealing plate 31 to move, the moving rod 334 drives the protrusion 36 to slide in the limiting groove 73 on the surface of the rotating rod 7. At this time, the protrusion 36 is in the first spiral section 731 of the limiting groove 73. When the protrusion 36 slides in the first spiral section 731, the heat dissipation rod 3 drives the sealing plate 31 to move toward the inside of the transformer body 1. At the same time, the protrusion 36 squeezes the first spiral section 731, so that the rotating rod 7 drives the rotating plate 71 to move, and the rotating plate 71 drives the arc groove 711 to rotate, so that the magnetic rod 331 slides inside the arc groove 711. At this time, the magnetic rod 331 drives the slider 313 to move, and the slider 313 stretches the first spring 312 and drives the baffle 33 to move.

[0057] When the protrusion 36 moves to the connection point between the first spiral section 731 and the straight section 732, the baffle 33 closes the through hole 32, and then the protrusion 36 slides in the straight section 732, so that the heat sink 3 drives the baffle 33 and the sealing plate 31 to move synchronously. After moving a certain distance, the magnetic rod 331 and the electromagnet 721 are attracted to each other, and the magnetic rod 331 drives the baffle 33 to move toward the side of the protective shell 72. At this time, there is no contact between the magnetic rod 331 and the protective shell 72, and they are only attracted by magnetic force. The baffle 33 drives the sealing plate 31 to move synchronously and stretch the second spring 341. Then the sealing plate 31 moves inside the heat sink 3 and pushes the oil to the inside of the discharge check valve 35.

[0058] When the protrusion 36 moves to the connection point between the straight section 732 and the second spiral section 733, one end of the magnetic rod 331 contacts one end of the protective shell 72, and then when the protrusion 36 slides in the second spiral section 733, the rotating rod 7 resets and rotates. At this time, the magnetic rod 331 is limited by the protective shell 72, and the heat sink 3 slides on the connecting rod 34. At the same time, the rotating plate 71 resets and drives the magnetic rod 331 to reset. When the protrusion 36 moves to the connection point between the second spiral section 733 and the first spiral section 731, the magnetic rod 331 resets and leaves the adsorption range of the electromagnet 721. At this time, the sealing plate 31 and one end of the heat sink 3 are fitted together, and the magnetic rod 331 simultaneously drives the baffle 33 to open the through hole 32 for subsequent oil delivery. Repeat the above operation to deliver the oil to other areas of the transformer body 1, thereby achieving uniform preheating of the oil and avoiding local overheating and reduced heat dissipation efficiency.

[0059] like Figure 8 and Fig. 9 As shown, one end of the magnetic rod 331 is slidably connected to a moving rod 334, one end of the moving rod 334 is fixedly connected to a first scraper 332, the interior of the first scraper 332 is slidably connected to a second scraper 333, and a third spring 335 is fixedly connected between the moving rod 334 and the magnetic rod 331.

[0060] Specifically, the rectifier transformer is designed for use, in which the oil is subjected to high temperature, high pressure and electric field, causing chemical reactions such as aging, decomposition and polymerization of the oil molecules. These reactions will generate some polymer compounds and impurities, which will gradually accumulate to form impurities. When the impurities are attached to the protective shell 72 or one end of the magnetic rod 331, the impurities will hinder the penetration of the magnetic field, causing the magnetic field strength in the area where the magnetic rod 331 is located to weaken, thereby reducing the adsorption force of the electromagnet 721 on the magnetic rod 331, resulting in the problem that the heat sink 3 cannot drive the oil to flow for uniform preheating.

[0061] In order to solve the above problem, when the magnetic rod 331 drives the baffle 33 to block the through hole 32, the first scraper 332 moves synchronously with the magnetic rod 331, and the second scraper 333 moves inside the first scraper 332, so that the diameter of the ring formed by the first scraper 332 and the second scraper 333 gradually becomes smaller. When the baffle 33 completely blocks the through hole 32, the first scraper 332 contacts the surface of the rotating rod 7, and the rotating rod 7 squeezes the first scraper 332, so that the first scraper 332 is forced to squeeze the third spring 335 upward, and the first scraper 332 slides and cleans the sludge impurities at one end of the magnetic rod 331. The first scraper 332 and the second scraper 333 are in contact with one side of the protective shell 72, and then the first scraper 332 follows the reset operation of the magnetic rod 331, and the first scraper 332 drives the second scraper 333 to clean the sludge impurities on the surface of the protective shell 72. When the magnetic rod 331 is reset and separated from the adsorption of the electromagnet 721, the automatic cleaning of the protective shell 72 and one end of the magnetic rod 331 can be completed, thereby avoiding the problem that the electromagnetic force adsorption decreases due to the adhesion of sludge, thereby causing the heat sink 3 to be unable to drive the oil to flow for uniform preheating.

[0062] A DC ore-fired furnace comprises a rectifier transformer, the DC ore-fired furnace also comprises a furnace body 6, a furnace cover 61 is mounted on the furnace body 6, a furnace hood 62 is mounted on the furnace cover 61, a feeding device 64 for conveying raw materials to the furnace body 6 is mounted above the furnace hood 62, an electrode lifting and pressing device 65 for adjusting the position of an electrode 63 in the furnace is arranged on one side of the feeding device 64, the electrode lifting and pressing device 65 is mounted on the furnace hood 62, an electrode 63 is mounted on the output end of the electrode lifting and pressing device 65, and the rectifier transformer is used to supply the electrode 63 with energy required to generate an arc.

[0063] Specifically, when the DC electric arc furnace is in use, the feeding device 64 continuously transports raw materials into the furnace body 6, and converts the input AC power into DC power through a rectifier transformer for use in the electric arc furnace. The DC current enters the charge through the electrode 63, and an arc is formed between the electrode 63 and the ore. The high temperature of the arc causes the ore to heat up and melt rapidly. At the same time, under the action of the electric field, the ions and molecules in the ore will move, thereby promoting the reaction rate and the mixing of the ore. Subsequently, the position of the electrode 63 is adjusted by controlling the electrode lifting and pressing device to ensure product quality and energy utilization efficiency.

[0064] Working principle: when the DC ore-fired furnace is in use, the feeding device 64 continuously transports raw materials into the furnace body 6, and converts the input AC power into DC power through the rectifier transformer for use in the ore-fired furnace. The DC current enters the charge through the electrode 63, and an arc is formed between the electrode 63 and the ore. The high temperature of the arc causes the ore to heat up and melt rapidly. At the same time, under the action of the electric field, the ions and molecules in the ore will move, thereby promoting the reaction rate and the mixing of the ore. Then, the position of the electrode 63 is adjusted by controlling the electrode lifting and pressing device to ensure product quality and energy utilization efficiency.

[0065] When the transformer is working in a cold environment, the oil inside it is in a viscous state in the initial stage, and the fan 21 and the electric heating tube 22 can be turned on. The fan 21 blows out airflow and is heated by the electric heating tube 22 to generate hot air. The hot air blows toward the surface of the shell 2 and the transformer body 1 to preheat the internal oil. Then, the motor 41 and the electromagnet 721 are turned on, and the motor 41 drives the first cam 42 and the second cam 44 to rotate. The first cam 42 and the second cam 44 drive the connecting rod 43 to rotate. The connecting rod 43 drives the moving plate 4 to reciprocate. The moving plate 4 drives a plurality of heat sinks 3 to reciprocate inside the transformer body 1. The heat sinks 3 reciprocate inside the transformer body 1. The heat sinks 3 are sealed by the sealing pad 11. After being heated by the hot air, the heat sinks 3 can transfer heat to the oil inside the transformer body 1 and accelerate the preheating of the oil.

[0066] Under normal conditions, the through hole 32 is in an open state, so when the moving plate 4 drives the heat sink 3 to move into the transformer body 1, the heat sink 3 drives the through hole 32 to move in the oil, and the oil enters the interior of the heat sink 3 through the through hole 32;

[0067] At the same time, the moving rod 334 drives the protrusion 36 to slide in the limiting groove 73 on the surface of the rotating rod 7. At this time, the protrusion 36 is in the first spiral section 731 of the limiting groove 73. When the protrusion 36 slides in the first spiral section 731, the heat dissipation rod 3 drives the sealing plate 31 to move into the transformer body 1. At the same time, the protrusion 36 squeezes the first spiral section 731, so that the rotating rod 7 drives the rotating plate 71 to move, and the rotating plate 71 drives the arc groove 711 to rotate, so that the magnetic rod 331 slides inside the arc groove 711. At this time, the magnetic rod 331 drives the slider 313 to move, and the slider 313 stretches the first spring 312 and drives the baffle 33 to move.

[0068] When the protrusion 36 moves to the connection point between the first spiral section 731 and the straight section 732, the baffle 33 closes the through hole 32, and then the protrusion 36 slides in the straight section 732, so that the heat sink 3 drives the baffle 33 and the sealing plate 31 to move synchronously. After moving a certain distance, the magnetic rod 331 and the electromagnet 721 are attracted to each other, and the magnetic rod 331 drives the baffle 33 to move toward the side of the protective shell 72. At this time, there is no contact between the magnetic rod 331 and the protective shell 72, and they are only attracted by magnetic force. The baffle 33 drives the sealing plate 31 to move synchronously and stretch the second spring 341. Then the sealing plate 31 moves inside the heat sink 3 and pushes the oil to the inside of the discharge check valve 35.

[0069] When the protrusion 36 moves to the connection point between the straight section 732 and the second spiral section 733, one end of the magnetic rod 331 contacts one end of the protective shell 72, and then when the protrusion 36 slides in the second spiral section 733, the rotating rod 7 is reset and rotated, and the magnetic rod 331 is limited by the protective shell 72, and the heat sink 3 slides on the connecting rod 34. At the same time, the rotating plate 71 is reset and drives the magnetic rod 331 to reset. When the protrusion 36 moves to the connection point between the second spiral section 733 and the first spiral section 731, the magnetic rod 331 is reset and leaves the adsorption range of the electromagnet 721. At this time, the sealing plate 31 and one end of the heat sink 3 are attached, and the magnetic rod 331 simultaneously drives the baffle 33 to open the through hole 32 for subsequent oil delivery. Repeat the above operation to deliver oil to other areas of the transformer body 1.

[0070] When the magnetic rod 331 drives the baffle plate 33 to block the through hole 32, the first scraper plate 332 moves synchronously with the magnetic rod 331, and the second scraper plate 333 moves inside the first scraper plate 332, so that the diameter of the ring formed by the first scraper plate 332 and the second scraper plate 333 gradually decreases. When the baffle plate 33 completely blocks the through hole 32, the first scraper plate 332 contacts the surface of the rotating rod 7, and the rotating rod 7 squeezes the first scraper plate 332, so that the first scraper plate 332 is forced to squeeze the third spring 335 upward, and the first scraper plate 332 slides and The oily mud impurities on one end of the magnetic rod 331 are cleaned, and then when the protrusion 36 is in the second spiral section 733, one side of the first scraper 332 and the second scraper 333 are in contact with one side of the protective shell 72, and then the first scraper 332 follows the reset operation of the magnetic rod 331, and the first scraper 332 drives the second scraper 333 to clean the oily mud impurities on the surface of the protective shell 72. When the magnetic rod 331 is reset and separated from the adsorption of the electromagnet 721, the automatic cleaning of the protective shell 72 and one end of the magnetic rod 331 can be completed.

[0071] When it is necessary to perform heat dissipation operation on the transformer body 1 subsequently, the electric heating rod is turned off and the above operation is repeated to achieve heat dissipation of the transformer body 1 .

[0072] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A rectifier transformer, characterized in that: The invention comprises a transformer body (1), wherein the transformer body (1) is symmetrically fixedly connected to a shell (2), wherein each shell (2) is fixedly connected to a plurality of fans (21), wherein one side of the fans (21) is provided with an electric heating pipe (22), wherein the electric heating pipe (22) is fixedly connected to the inner wall of the shell (2), wherein one side of the electric heating pipe (22) is provided with a movable plate (4), wherein the movable plate (4) is slidably connected to the inside of the shell (2), wherein the inside of the movable plate (4) is slidably connected to a plurality of heat dissipation rods ( 3), a sealing pad (11) is slidably provided on each of the heat sinks (3), and the sealing pad (11) is fixedly connected to the transformer body (1). When the weather is cold and the oil inside the transformer body (1) becomes viscous, the heat sink (3) is heated and driven to penetrate the transformer body (1), so that the heat sink (3) enters the interior of the transformer body (1). The heat sink (3) can transfer heat to the interior of the transformer body (1), thereby preheating the oil; Each heat sink (3) is slidably connected to a sealing plate (31), a through hole (32) is provided inside the sealing plate (31), and a plurality of baffles (33) are slidably connected to one side of the sealing plate (31), and when both sides of the plurality of baffles (33) are in a fitted state, the through hole (32) can be blocked; The sealing plate (31) is provided with a slide groove (311) inside, a slider (313) is slidably connected inside the slide groove (311), and a first spring (312) is fixedly connected between the slider (313) and the slide groove (311); A rotating rod (7) is rotatably arranged inside the heat dissipation rod (3), one end of the rotating rod (7) is fixedly connected to a rotating plate (71), an arc-shaped groove (711) is arranged inside the rotating plate (71), a magnetic rod (331) is slidably connected inside the arc-shaped groove (711), and the magnetic rod (331) penetrates the baffle (33) and is fixedly connected inside the slider (313); A protective shell (72) is fixedly connected to the surface of the rotating rod (7), an electromagnet (721) is fixedly connected to the interior of the protective shell (72), the electromagnet (721) and the magnetic rod (331) are mutually attracted after being energized, a connecting rod (34) is fixedly connected to one side of the sealing plate (31), a second spring (341) is fixedly connected between the connecting rod (34) and the heat dissipation rod (3), and a liquid discharge one-way valve (35) is fixedly connected to the lower surface of the heat dissipation rod (3); One end of the liquid discharge check valve (35) is fixedly connected to a liquid inlet pipe (52), one end of the liquid inlet pipe (52) is fixedly connected to a return frame (5), the return frame (5) is fixedly connected to the inside of the housing (2), one end of the return frame (5) is fixedly connected to a return pipe (51), one end of the return pipe (51) passes through two sides of the transformer body (1), and one side of the return frame (5) is fixedly connected to one end of the rotating rod (7).

2. A rectifier transformer according to claim 1, characterized in that: The inner wall of the housing (2) is rotatably connected to a first cam (42), the inner wall of the housing (2) is fixedly connected to a transmission rod, both ends of the transmission rod are rotatably connected to second cams (44), a connecting rod (43) is rotatably connected between the first cam (42) and the second cam (44), one end of the connecting rod (43) is rotatably connected to one side of the movable plate (4), the outer wall of the housing (2) is fixedly connected to a motor (41), and the output end of the motor (41) is fixedly connected to one end of the first cam (42).

3. A rectifier transformer according to claim 2, characterized in that: A limiting groove (73) is provided on the surface of the rotating rod (7), and a protrusion (36) is slidably connected inside the limiting groove (73), and the protrusion (36) is fixedly connected inside the heat sink (3). The limiting groove (73) includes a first spiral segment (731), and a straight segment (732) is provided on one side of the first spiral segment (731), and a second spiral segment (733) is provided on one side of the straight segment (732), and the first spiral segment (731), the straight segment (732) and the second spiral segment (733) are connected.

4. A rectifier transformer according to claim 3, characterized in that: One end of the magnetic rod (331) is slidably connected to a moving rod (334), one end of the moving rod (334) is fixedly connected to a first scraper (332), the interior of the first scraper (332) is slidably connected to a second scraper (333), and a third spring (335) is fixedly connected between the moving rod (334) and the magnetic rod (331).

5. A DC ore-fired furnace, characterized in that: The DC ore-fired furnace comprises a rectifier transformer as claimed in any one of claims 1 to 4, and further comprises a furnace body (6), a furnace cover (61) is installed on the furnace body (6), a furnace hood (62) is installed on the furnace cover (61), a feeding device (64) for conveying raw materials to the furnace body (6) is installed above the furnace hood (62), an electrode lifting and pressing device (65) for adjusting the position of the electrode (63) in the furnace is arranged on one side of the feeding device (64), the electrode lifting and pressing device (65) is installed on the furnace hood (62), an electrode (63) is installed at the output end of the electrode lifting and pressing device (65), and the rectifier transformer is used to supply the electrode (63) with energy required for generating an arc.

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