Nonmetal smelting furnace

Abstract

The invention belongs to the field of smelting furnaces, and particularly relates to a non-metal smelting furnace, a furnace body of the non-metal smelting furnace comprises a furnace body shell and a cooling coil, the furnace body shell comprises a lower shell and an upper barrel connected with the upper end of the lower shell, and due to the fact that raw materials are located in the lower shell in the smelting process, the raw materials are not prone to falling off; the cooling coil is evenly wound on the outer wall of the lower shell from top to bottom, the cooling coil with the semicircular cross section and the outer wall of the lower shell are enclosed to form the cooling water flow channel with the semicircular cross section, the contact area of cooling water and the lower shell is increased, then the heat exchange efficiency is improved, and the cooling effect is good. As the cooling water flows in the cooling water flow channel to cool the lower shell, compared with a spray cooling mode, a workshop can be kept clean and dry, and safe operation of all equipment is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of smelting furnaces, and in particular to a non-metallic smelting furnace. Background Art

[0002] Non-metallic smelting furnaces are mainly used for smelting and processing non-metallic minerals, such as quartz, bauxite, phosphate, etc. Its working principle is usually to heat the raw materials to high temperatures through electric arc, induction heating or other heat sources to achieve the goal of smelting and purification. Its working principle is to generate high temperatures of more than 2000 degrees Celsius through arc discharge between electrodes, so that the raw materials can be effectively melted. Domestic non-metallic arc furnaces have been used for many years and have played an important role in the development and progress of our country, but there are also many areas that need innovation and improvement:

[0003] 1. The existing furnace cooling method began with external water cooling spray cooling in the 1990s. It is safe and simple, but the external water cooling spray causes water everywhere in the lower part of the furnace, and the entire workshop is also very humid, so the mechanical parts are seriously corroded, the service life of the equipment is greatly reduced, and leakage, seepage and evaporation cause a lot of water loss;

[0004] 2. During the smelting process, the furnace may suddenly rise due to material collapse, smelting boiling and other reasons. In order to avoid the sudden rise of the molten liquid, a solution of tilting back at a certain angle is usually adopted. To meet this function, an oil cylinder is usually used as the rear support column for support. During the smelting process, the supporting oil cylinder always supports the entire weight of the furnace body, and the requirements for the oil cylinder are relatively high. If the oil cylinder leaks, the pneumatic oil cylinder is required to readjust the tilt angle, and the support mechanism needs to be used to prop up the electric furnace when the furnace is stopped, which is very inconvenient;

[0005] 3. The problem of crusting inside the dust extraction pipe near the dust extraction port is a difficult point in the production of zirconia furnaces in non-metallic smelting furnaces. During smelting, the silicon in the zirconium dioxide slag is oxidized and reduced to high-temperature silicon dioxide gas under high-temperature oxidation conditions. When these gases pass through the dust extraction port of the furnace cover, the ambient temperature drops, causing the gas to cool, and eventually forming solid silicon deposits, which in turn causes crusting inside the dust extraction pipe near the dust extraction port. Once the crust is formed, it will gradually block the dust extraction pipe, seriously affecting the ventilation and smoke exhaust efficiency of the system. Therefore, it is necessary to regularly clean the crust inside the pipe to ensure normal production. In existing non-metallic electric arc furnaces, the dust extraction pipe connected to the dust extraction port is usually a vertical pipe arranged vertically or an inclined pipe arranged obliquely. The subsequent cleaning of the crust inside the pipe is difficult, time-consuming and labor-intensive.

[0006] 4. After the non-metal is smelted in the furnace, it will form a layer of non-metallic hard shell at the discharge nozzle due to sudden contact with cold air when pouring out. The hard shell on the discharge nozzle must be removed before the next discharge. The traditional cleaning method is to knock it off manually with a hammer / steel chisel, or to hit it with a pneumatic pick, which is inconvenient, time-consuming and labor-intensive. Summary of the invention

[0007] The embodiment of the present application provides a non-metallic smelting furnace to solve the above-mentioned problems.

[0008] To achieve the above-mentioned purpose, the present application provides a non-metallic smelting furnace, including a concrete foundation, a supporting platform, a smelting furnace, a dust extraction pipe, a crust cleaning device, an operating platform, an electrode lifting device and a power supply device;

[0009] The support platform is arranged on the concrete foundation, the smelting furnace, the operating platform and the electrode lifting device are all arranged on the support platform, and the electrode lifting device is located at the rear of the smelting furnace, and the operating platform is located above the smelting furnace; the smelting furnace comprises a furnace body and a furnace cover arranged on the top of the furnace body, a discharge nozzle for discharging materials is arranged in the middle of the furnace body, a feeding hole and an electrode insertion hole are arranged on the top of the furnace cover, a dust extraction port is arranged on the side of the furnace cover, and the dust extraction pipe is connected to the dust extraction port; the crust cleaning device is installed on the outer wall of the furnace body on one side of the discharge nozzle, and is used to clean the crust on the discharge nozzle;

[0010] The furnace body includes a furnace body shell and a cooling coil, the furnace body shell includes a lower shell and an upper cylinder connected to the upper end of the lower shell, the discharge nozzle is provided at the connection between the lower shell and the upper cylinder, the side of the upper cylinder is provided with an inspection port, the outer wall of the upper cylinder is provided with a furnace door for opening and closing the inspection port, the cooling coil is evenly coiled on the outer wall of the lower shell from top to bottom, the cross-section of the cooling coil is semicircular, the cooling coil and the outer wall of the lower shell form a cooling water flow channel with a semicircular cross-section, and the cooling coil is provided with a water inlet and a water outlet.

[0011] Optionally, it also includes a water distributor and a water collector, and the cooling coil is provided with a plurality of water inlets and a plurality of water outlets at intervals from top to bottom; the water distributor includes a main water inlet pipe and a plurality of water distributors connected to the main water inlet pipe, the diameter of the water distributor is smaller than the diameter of the main water inlet pipe, and one end of the plurality of water distributors away from the main water inlet pipe is respectively connected to the plurality of water inlets in a one-to-one correspondence; the water collector includes a main return water pipe and a plurality of water collectors connected to the main return water pipe, the diameter of the water collector is smaller than the diameter of the main return water pipe, and one end of the plurality of water collectors away from the main return water pipe is respectively connected to the plurality of water outlets in a one-to-one correspondence.

[0012] Optionally, the support platform includes a supporting mechanism, a sliding mechanism, a supporting plate and a pushing mechanism, the supporting mechanism includes two supporting front legs and two supporting rear legs, the length of the two supporting front legs is greater than the length of the two supporting rear legs, the supporting front legs and the supporting rear legs are vertically arranged to make the supporting mechanism rectangular; the sliding mechanism slides in a direction perpendicular to the length of the supporting rear legs; one end of the supporting plate is hinged to the supporting front legs, and the other end is used to overlap the sliding mechanism or the supporting rear legs; the pushing mechanism is arranged between the supporting front legs and the supporting rear legs, and the pushing mechanism is used to push the supporting plate to rotate.

[0013] Optionally, the bearing plate is in a first plane when overlapped on the sliding mechanism, and is in a second plane when overlapped on the supporting rear leg, the first plane is horizontal, and the angle between the first plane and the second plane is 5°.

[0014] Optionally, the sliding mechanism includes a crossbeam, which is perpendicular to the length direction of the supporting rear leg and is arranged at the top end of the supporting rear leg. A sliding block is arranged on the crossbeam, and the sliding block slides along the length direction of the crossbeam.

[0015] Optionally, the furnace hood includes a cylinder, a first water-cooling plate and a second water-cooling plate, the dust extraction port is arranged on the side of the cylinder, the first water-cooling plate is arranged at the bottom of the cylinder, the first water-cooling plate is installed on the opening at the top of the furnace body, the middle part of the first water-cooling plate is provided with a avoidance hole, the interior of the first water-cooling plate is provided with a first water-cooling cavity, the side of the first water-cooling plate is provided with a first water inlet pipe and a first water outlet pipe connected to the first water-cooling cavity; the second water-cooling plate is arranged at the top of the cylinder, the feeding hole and the three electrode insertion holes are arranged on the second water-cooling plate, the vertical projections of the feeding hole and the three electrode insertion holes all fall into the avoidance hole on the first water-cooling plate, the interior of the second water-cooling plate is provided with a second water-cooling cavity, and the side of the second water-cooling plate is provided with a second water inlet pipe and a second water outlet pipe connected to the second water-cooling cavity.

[0016] Optionally, the first water-cooling plate and the second water-cooling plate are both hollow sandwich structures.

[0017] Optionally, the dust extraction pipe includes a dust extraction hood, a four-way pipe joint, a main pipe body, a first sealing cover and a second sealing cover, the first interface of the four-way pipe joint is connected to one end of the dust extraction hood, and the other end of the dust extraction hood is used to dock with the dust extraction port, the main pipe body is arranged vertically, the top of the main pipe body is connected to the second interface of the four-way pipe joint, the first sealing cover is arranged on the third interface of the four-way pipe joint, the second sealing cover is arranged on the fourth interface of the four-way pipe joint, and a pipe interface for connecting the pipeline is provided on the lower end side wall of the main pipe body.

[0018] Optionally, the crust cleaning device includes a mounting bracket, a casing, a rotating arm, a hinged seat, a knocking block and a driving mechanism; the casing is arranged on the mounting bracket, and the mounting bracket is installed on the outer wall of the furnace body on one side of the discharge nozzle, the casing is provided with an opening on the side close to the discharge nozzle, one end of the rotating arm extends into the casing through the opening, the hinged seat is arranged in the opening and is hinged to the rotating arm, the other end of the rotating arm is located above the discharge nozzle and is fixed with the knocking block, the rotating arm can rotate up and down around the hinged seat, and the discharge nozzle is located on the movement path of the knocking block, the driving mechanism is arranged in the casing and connected to the end of the rotating arm extending into the casing, and the driving mechanism is used to drive the rotating arm to rotate up and down around the hinged seat so as to knock off the crust on the discharge nozzle through the knocking block.

[0019] Optionally, two water cooling channels extending along the length direction of the rotating arm are provided inside the rotating arm, and the two water cooling channels are connected at one end of the rotating arm near the knocking block, and one end of the rotating arm located inside the housing is respectively provided with a water inlet head and a water outlet head connected to the two water cooling channels, the water inlet head is connected to a water inlet pipe, and the water outlet head is connected to a water return pipe;

[0020] The casing includes a main shell and a back cover, the opening is arranged on one side of the main shell, the back cover is opposite to the side of the main shell where the opening is arranged, the shell wall of the main shell is a sandwich structure, a water cooling cavity is formed inside, and the outer wall of the main shell is provided with a water inlet joint and a water outlet joint connected to the water cooling cavity.

[0021] The non-metal smelting furnace provided in this application has at least the following beneficial effects:

[0022] 1. The furnace body includes a furnace shell and a cooling coil. The furnace shell includes a lower shell and an upper cylinder connected to the upper end of the lower shell. Since the raw materials are located inside the lower shell during the smelting process, the cooling coil is evenly coiled from top to bottom on the outer wall of the lower shell. The cooling coil with a semicircular cross-section and the outer wall of the lower shell are used to form a cooling water flow channel with a semicircular cross-section, thereby increasing the contact area between the cooling water and the lower shell, thereby improving the heat exchange efficiency and achieving a good cooling effect. Since the cooling water flows in the cooling water flow channel to cool the lower shell, compared with the spray cooling method, the workshop can be kept clean and dry, ensuring the safe operation of various equipment;

[0023] 2. The support platform is provided with support front legs and support rear legs of different heights, so that the load-bearing plate can maintain a horizontal state or a backward tilted state. When maintaining the backward tilted state, the load-bearing plate is overlapped on the top of the support rear legs; when maintaining the horizontal state, the load-bearing plate is overlapped on the sliding mechanism, and the load-bearing plate is overlapped on the sliding mechanism or the support rear legs through the pushing structure, which reduces the load of the pushing structure and is conducive to maintaining the stability of the load-bearing plate;

[0024] 3. The furnace cover is mainly composed of a first water-cooling plate, a second water-cooling plate and a cylinder connected between the first water-cooling plate and the second water-cooling plate. During the smelting process, cooling water is introduced into the first water-cooling cavity inside the first water-cooling plate and the second water-cooling cavity inside the second water-cooling plate to cool the furnace cover, thereby preventing high temperature from affecting the installation and operation of corresponding equipment on the furnace cover and the activities and occupancy of personnel; before being discharged to the outside, the high-temperature flue gas in the furnace body will enter the water-cooling space formed by the first water-cooling plate, the second water-cooling plate and the cylinder through the avoidance hole in the middle of the first water-cooling plate, and will be initially cooled in the water-cooling space before being discharged from the dust extraction port on the side of the cylinder through the dust extraction pipe. Compared with the direct discharge of high-temperature flue gas, it does not affect the dust removal performance and service life of the subsequent bag filter;

[0025] 4. The main body in the dust extraction pipe is arranged vertically. After entering through the dust extraction hood, the dust-laden flue gas collides with the inner sides of the first sealing cover and the second sealing cover at the four-way pipe joint and turns downward to enter the main body. The crust mainly occurs on the inner side walls of the first sealing cover and the second sealing cover. Therefore, when cleaning the crust in the pipe regularly in the future, it is only necessary to open the first sealing cover and the second sealing cover to remove the crust accumulated in the cover. At the same time, after opening the first sealing cover and the second sealing cover, it is also convenient to clean the crust on the inner wall of the dust extraction hood and the inner wall of the four-way pipe joint through the third interface and the fourth interface of the four-way pipe joint. The operation is simple, saving time and effort.

[0026] 5. The crust cleaning device includes a mounting bracket, a casing mounted on the mounting bracket, a rotating arm hinged to the casing via a hinge seat, a knocking block fixed to the rotating arm, and a driving mechanism for driving the rotating arm to rotate up and down around the hinge seat. The casing is mounted on the outer wall of the furnace body on one side of the discharge nozzle via the mounting bracket. One end of the rotating arm with the knocking block fixed thereto is located above the discharge nozzle. When the driving mechanism drives the rotating arm to rotate, the knocking block is driven to move together. The discharge nozzle is located on the movement path of the knocking block. In actual use, after each dumping of the material, the driving mechanism drives the rotating arm to rotate up and down around the hinge seat, and the knocking block is used to knock off the crust on the discharge nozzle. The operation is simple and saves labor costs and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] in:

[0029] Figure 1 It is a schematic diagram of the overall structure of a non-metallic smelting furnace shown in one embodiment of the present application;

[0030] Figure 2 yes Figure 1 The schematic diagram of the non-metal smelting furnace shown is shown without the dust extraction pipe;

[0031] Figure 3 It is a structural schematic diagram of a support platform in a non-metallic smelting furnace shown in an embodiment of the present application;

[0032] Figure 4 It is a schematic diagram of the connection between the smelting furnace and the dust extraction pipe in a non-metallic smelting furnace shown in one embodiment of the present application;

[0033] Figure 5 It is a structural schematic diagram of a furnace body in a non-metallic smelting furnace shown in an embodiment of the present application;

[0034] Figure 6 It is a schematic cross-sectional structure diagram of a smelting furnace after the cooling coil in the furnace body is connected to the outer wall of the lower shell body shown in one embodiment of the present application;

[0035] Figure 7 It is a schematic diagram of the structure of a cooling coil in a furnace body of a smelting furnace shown in one embodiment of the present application;

[0036] Figure 8 It is a schematic cross-sectional structure diagram of a furnace cover in a non-metallic smelting furnace shown in one embodiment of the present application;

[0037] Fig. 9 It is a schematic diagram of the external structure of a furnace cover in a non-metallic smelting furnace shown in one embodiment of the present application;

[0038] Fig.10 It is a disassembled schematic diagram of a furnace cover in a non-metallic smelting furnace shown in an embodiment of the present application;

[0039] Fig.11 It is a schematic diagram of the three-dimensional structure of a dust extraction pipe in a non-metallic smelting furnace shown in one embodiment of the present application;

[0040] Fig.12It is a schematic cross-sectional structure diagram of a dust extraction pipe in a non-metallic smelting furnace shown in one embodiment of the present application;

[0041] Fig.13 This is a front view of a smelting furnace and a crust cleaning device in a non-metallic smelting furnace shown in one embodiment of the present application;

[0042] Fig.14 It is a top view of a smelting furnace and a crust cleaning device in a non-metallic smelting furnace shown in one embodiment of the present application;

[0043] Fig.15 It is a structural schematic diagram of a crust cleaning device in a non-metallic smelting furnace shown in one embodiment of the present application;

[0044] Fig.16 It is a schematic diagram of a rotating arm and a knocking block in a crust cleaning device shown in an embodiment of the present application;

[0045] Fig.17 It is a schematic diagram of the structure inside the casing of a crust cleaning device shown in one embodiment of the present application.

[0046] Description of main component symbols:

[0047] 1. Concrete foundation;

[0048] 2. Support platform; 21. Support mechanism; 211. Support front legs; 212. Support rear legs; 22. Sliding mechanism; 221. Crossbeam; 222. Sliding block; 23. Loading plate;

[0049] 3. Smelting furnace; 31. Furnace body; 311. Furnace shell; 3101. Discharging nozzle; 3111. Lower shell; 3112. Upper cylinder; 312. Cooling coil; 3121. Water inlet; 3122. Water outlet; 313. Furnace door; 3131. Cooling pipe; 32. Furnace cover; 321. Cylinder; 3201. Dust extraction port; 322. First water cooling plate; 32201. Avoidance hole; 32202. First water cooling chamber; 32203. First water inlet pipe; 32204. First water outlet pipe; 323. Second water cooling plate; 32301. Feeding hole; 32302. Electrode insertion hole; 32303. Second water cooling chamber; 32304. Second water inlet pipe; 32305. Second water outlet pipe;

[0050] 4. Dust extraction pipe; 41. Dust extraction hood; 42. Four-way pipe joint; 43. Main pipe body; 431. Pipe interface; 44. First sealing cover; 45. Second sealing cover;

[0051] 5. Crust cleaning device; 51. Mounting bracket; 52. Casing; 5201. Water inlet joint; 5202. Water outlet joint; 53. Rotating arm; 5301. T-slot; 531. Water inlet head; 532. Water outlet head; 5311. Water inlet pipe; 5321. Water return pipe; 54. Articulated seat; 55. Striking block; 56. Driving mechanism;

[0052] 6. Operation platform;

[0053] 7. Electrode lifting device;

[0054] 8. Power supply equipment. DETAILED DESCRIPTION

[0055] In order to facilitate the understanding of the present application, the present application will be described more comprehensively with reference to the relevant drawings below. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0056] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0057] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0058] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of this application.

[0059] The embodiment of the present application provides a non-metal smelting furnace, such as Figure 1-Figure 2 and Figure 4-Figure 7As shown, the non-metallic smelting furnace includes a concrete foundation 1, a supporting platform 2, a smelting furnace 3, a dust extraction pipe 4, a crust cleaning device 5, an operating platform 6, an electrode lifting device 7 and a power supply device 8. The supporting platform 2 is arranged on the concrete foundation 1, the smelting furnace 3, the operating platform 6, and the electrode lifting device 7 are all arranged on the supporting platform 2, and the electrode lifting device 7 is located at the rear of the smelting furnace 3, and three vertically arranged electrodes are provided on the electrode lifting device 7, and the operating platform 6 is located above the smelting furnace 3; the smelting furnace 3 includes a furnace body 31 and a furnace hood 32 arranged on the top of the furnace body 31, a discharge nozzle 3101 for discharging is provided in the middle of the furnace body 31, a feeding hole 32301 and three electrode insertion holes 32302 are provided on the top of the furnace hood 32, a dust extraction port 3201 is provided on the side of the furnace hood 32, and the dust extraction pipe 4 is connected to the dust extraction port 3201; the crust cleaning device 5 is installed on the outer wall of the furnace body 31 on the side of the discharge nozzle 3101, and is used to clean the crust on the discharge nozzle 3101. The furnace body 31 includes a furnace body shell 311 and a cooling coil 312. The furnace body shell 311 includes a lower shell 3111 and an upper cylinder 3112 connected to the upper end of the lower shell 3111. A discharge nozzle 3101 is provided at the connection between the lower shell 3111 and the upper cylinder 3112. An inspection port is provided on the side of the upper cylinder 3112. A furnace door 313 for opening and closing the inspection port is provided on the outer wall of the upper cylinder 3112. The cooling coil 312 is evenly coiled on the outer wall of the lower shell 3111 from top to bottom. The cross-section of the cooling coil 312 is semicircular. The cooling coil 312 and the outer wall of the lower shell 3111 form a cooling water flow channel with a semicircular cross-section. A water inlet 3121 and a water outlet 3122 are provided on the cooling coil 312.

[0060] In the embodiment of the present application, the furnace body 31 of the non-metallic smelting furnace includes a furnace body shell 311 and a cooling coil 312. The furnace body shell 311 includes a lower shell 3111 and an upper cylinder 3112 connected to the upper end of the lower shell 3111. During the smelting process, the raw material is located inside the lower shell 3111. Therefore, the cooling coil 312 is evenly coiled from top to bottom on the outer wall of the lower shell 3111. The cooling coil 312 with a semicircular cross-section is formed by the outer wall of the lower shell 3111 and the cooling water flow channel with a semicircular cross-section is formed to increase the contact area between the cooling water and the lower shell 3111, thereby improving the heat exchange efficiency and achieving a good cooling effect. Since the cooling water flows in the cooling water flow channel to cool the lower shell 3111, compared with the spray cooling method, the workshop can be kept clean and dry, ensuring the safe operation of each equipment.

[0061] Specifically, the cooling coil 312 can be made of a metal tube with a circular cross-section, which is cut in half along its length direction and then bent into a corresponding curvature according to the curvature of the outer surface of the lower shell 3111. The cooling coil 312 is fixed to the outer wall of the lower shell 3111 by welding.

[0062] In one embodiment, if Figure 7 As shown, the cooling coil 312 is provided with multiple water inlets 3121 and multiple water outlets 3122 from top to bottom. The multiple water inlets 3121 and the water outlets 3122 are provided to increase the replacement speed of the cooling water in the cooling water flow channel, thereby improving the cooling effect. Furthermore, it also includes a water distributor (not shown in the figure) and a water collector (not shown in the figure), the water distributor includes a main water inlet pipe and multiple water distributors connected to the main water inlet pipe, the diameter of the water distributor is smaller than the diameter of the main water inlet pipe, and the ends of the multiple water distributors away from the main water inlet pipe are respectively connected to the multiple water inlets 3121 in a one-to-one correspondence; the water collector includes a main return water pipe and multiple water collectors connected to the main return water pipe, the diameter of the water collector is smaller than the diameter of the main return water pipe, and the ends of the multiple water collectors away from the main return water pipe are respectively connected to the multiple water outlets 3122 in a one-to-one correspondence.

[0063] By setting up a water distributor and a water collector, it is only necessary to supply water to one main water inlet pipe and return water to one main water return pipe, which is convenient for control. At the same time, the number of water inlet pipes and water return pipes that need to be connected to the outside is small, and the appearance is simpler.

[0064] In one embodiment, the inner wall of the upper cylinder 3112 is provided with an insulating lining, which is used for heat insulation and heat preservation. As an important part of the furnace body 31, the furnace door 313 is directly exposed to the high temperature environment and is easily affected by heat radiation and heat conduction, which causes the temperature of the furnace door 313 to rise. If the temperature of the furnace door 313 is too high, it will not only affect its sealing performance, but also cause the furnace door 313 to deform or be damaged, thereby affecting the smelting effect and safety. In one embodiment, if Figure 5 As shown, a cooling pipe 3131 is embedded in the furnace door 313, and the cooling pipe 3131 is arranged in a corrugated shape to improve the cooling effect. The two ends of the cooling pipe 3131 serve as a water inlet and a water outlet respectively. The furnace door 313 is cooled by passing cooling water into the cooling pipe 3131.

[0065] In one embodiment, if Figure 1-Figure 3As shown, the support platform 2 includes a support mechanism 21, a sliding mechanism 22, a bearing plate 23 and a pushing mechanism. The support mechanism 21 includes two supporting front legs 211 and two supporting rear legs 212, the height of the two supporting front legs 211 is greater than the height of the two supporting rear legs 212, and the two supporting front legs 211 and the two supporting rear legs 212 are arranged in a rectangular array, so that the support mechanism 21 is in the shape of a rectangular body. The aforementioned sliding mechanism 22 is arranged on the supporting rear legs 212, and the sliding mechanism 22 slides in a direction perpendicular to the supporting rear legs 212, one end of the bearing plate 23 is hinged to the supporting front legs 211, and the other end is overlapped on the sliding mechanism 22 or the supporting rear legs 212. The pushing mechanism is arranged between the supporting front legs 211 and the supporting rear legs 212, and under the push of the pushing mechanism (oil cylinder), the bearing plate 23 can rotate around the hinge between the bearing plate 23 and the supporting front legs 211.

[0066] When the bearing plate 23 is overlapped on the sliding mechanism 22, the bearing plate 23 is in the first plane; when the bearing plate 23 is overlapped on the supporting rear leg 212, the bearing plate 23 is in the second plane. The angle between the first plane and the second plane is the backward tilt angle of the bearing plate 23. Preferably, the backward tilt angle is 5°.

[0067] The sliding mechanism 22 includes a crossbeam 221, which is arranged perpendicular to the length direction of the supporting rear leg 212, and the crossbeam 221 is located at the top of the supporting rear leg 212. A slider 222 is slidably arranged on the crossbeam 221, and the slider 222 can slide along the length direction of the crossbeam 221, so that the bearing plate 23 is overlapped on the slider 222 or the supporting rear leg 212.

[0068] In this embodiment, the support platform 2 sets supporting front legs 211 and supporting rear legs 212 of different heights so that the supporting plate 23 can maintain a horizontal state or a backward tilted state. When maintaining the backward tilted state, the supporting plate 23 overlaps the top of the supporting rear legs 212; when maintaining the horizontal state, the supporting plate 23 overlaps the sliding mechanism 22. The supporting plate 23 overlaps the sliding mechanism 22 or the supporting rear legs 212 through the pushing structure, which reduces the load of the pushing structure and is beneficial to maintaining the stability of the supporting plate 23.

[0069] In one embodiment, if Figure 8-Figure 10As shown, the furnace cover 32 includes a cylinder 321, a first water-cooling plate 322 and a second water-cooling plate 323. A dust extraction port 3201 is provided on the side of the cylinder 321, the first water-cooling plate 322 is provided at the bottom of the cylinder 321, the first water-cooling plate 322 is installed on the opening at the top of the furnace body 31, a avoidance hole 32201 is provided in the middle of the first water-cooling plate 322, a first water-cooling cavity 32202 is provided inside the first water-cooling plate 322, and a first water inlet pipe 32203 and a first water outlet pipe 32204 communicating with the first water-cooling cavity 32202 are provided on the side of the first water-cooling plate 322. The second water-cooling plate 323 is arranged at the top of the cylinder 321, and is provided with a feeding hole 32301 and three electrode insertion holes 32302. The vertical projections of the feeding hole 32301 and the three electrode insertion holes 32302 fall into the avoidance hole 32201 on the first water-cooling plate 322. The second water-cooling plate 323 is provided with a second water-cooling cavity 32303 inside, and the side of the second water-cooling plate 323 is provided with a second water inlet pipe 32304 and a second water outlet pipe 32305 communicating with the second water-cooling cavity 32303. Among them, the first water-cooling plate 322 and the second water-cooling plate 323 can both adopt a hollow sandwich structure.

[0070] During the operation of the non-metallic smelting furnace, cooling water is introduced into the first water-cooling chamber 32202 inside the first water-cooling plate 322 and the second water-cooling chamber 32303 inside the second water-cooling plate 323, so as to cool down the furnace cover 32, thereby preventing the high temperature from affecting the installation and operation of the corresponding equipment on the furnace cover 32 and the activities and occupancy of personnel. At the same time, before being discharged to the outside, the high-temperature flue gas in the furnace body 31 will enter the water-cooling space formed by the first water-cooling plate 322, the second water-cooling plate 323 and the cylinder 321 through the avoidance hole 32201 in the middle of the first water-cooling plate 322, and will be initially cooled in the water-cooling space before being discharged from the dust extraction port 3201 on the side of the cylinder 321 through the dust extraction pipe 4, which will not affect the dust removal performance and service life of the subsequent bag filter.

[0071] In one embodiment, if Figure 4 and Figure 11-Figure 12As shown, the dust extraction pipe 4 includes a dust extraction hood 41, a four-way pipe joint 42, a main pipe body 43, a first sealing cover 44 and a second sealing cover 45. It can be understood that the four-way pipe joint 42 has four interfaces, which are respectively recorded as the first interface, the second interface, the third interface and the fourth interface. The first interface and the third interface are arranged oppositely in the horizontal direction, and the second interface and the fourth interface are arranged oppositely in the vertical direction. The first interface of the four-way pipe joint 42 is connected to one end of the dust extraction hood 41, and the other end of the dust extraction hood 41 is used to dock with the dust extraction port 3201. The main pipe body 43 is arranged vertically, and the top of the main pipe body 43 is connected to the second interface of the four-way pipe joint 42. The first sealing cover 44 is arranged on the third interface of the four-way pipe joint 42, and the second sealing cover 45 is arranged on the fourth interface of the four-way pipe joint 42. The lower end side wall of the main pipe body 43 is provided with a pipe interface 431 for connecting the pipeline.

[0072] The main body 43 in the dust extraction pipe 4 is arranged vertically. After entering through the dust extraction hood 41, the dust-containing fume collides with the inner side of the first sealing cover 44 and the second sealing cover 45 at the four-way pipe joint 42 and turns downward to enter the main body 43. The crust mainly occurs on the inner side wall of the first sealing cover 44 and the second sealing cover 45. Therefore, when cleaning the crust in the pipe regularly in the subsequent period, it is only necessary to open the first sealing cover 44 and the second sealing cover 45 to remove the crust accumulated in the cover. At the same time, after opening the first sealing cover 44 and the second sealing cover 45, it is also convenient to clean the crust on the inner wall of the dust extraction hood 41 and the inner wall of the four-way pipe joint 42 through the third interface and the fourth interface of the four-way pipe joint 42, which is simple to operate and saves time and effort.

[0073] In one embodiment, if Figure 13-Figure 15 As shown, the crust cleaning device 5 includes a mounting bracket 51, a housing 52, a rotating arm 53, a hinged seat 54, a knocking block 55 and a driving mechanism 56. The casing 52 is arranged on the mounting bracket 51, and the mounting bracket 51 is used to be installed on the outer wall of the furnace body 31 on one side of the discharge nozzle 3101. An opening is provided on the side of the casing 52 close to the discharge nozzle 3101, and one end of the rotating arm 53 extends into the casing 52 through the opening. The hinge seat 54 is arranged in the opening and hinged to the rotating arm 53, and the other end of the rotating arm 53 is located above the discharge nozzle 3101 and is fixed with a knocking block 55. The rotating arm 53 can rotate up and down around the hinge seat 54, and the discharge nozzle 3101 is located on the movement path of the knocking block 55. The driving mechanism 56 is arranged in the casing 52 and connected to one end of the rotating arm 53 located in the casing 52. The driving mechanism 56 is used to drive the rotating arm 53 to rotate up and down around the hinge seat 54 to knock off the crust on the discharge nozzle 3101 through the knocking block 55.

[0074] The mounting bracket 51 may be directly welded to the outer wall of the furnace body 31 on the side of the discharge nozzle 3101 , or may be mounted on the outer wall of the furnace body 31 on the side of the discharge nozzle 3101 via fasteners or other connection structures.

[0075] In the embodiment of the present application, the crust cleaning device 5 of the discharge nozzle 3101 includes a mounting bracket 51, a housing 52 arranged on the mounting bracket 51, a rotating arm 53 hinged on the housing 52 through a hinge seat 54, a knocking block 55 fixed on the rotating arm 53, and a driving mechanism 56 for driving the rotating arm 53 to rotate up and down around the hinge seat 54. The housing 52 is mounted on the outer wall of the furnace body 31 on one side of the discharge nozzle 3101 through the mounting bracket 51, and one end of the rotating arm 53 fixed with the knocking block 55 is located above the discharge nozzle 3101. When the driving mechanism 56 drives the rotating arm 53 to rotate, the knocking block 55 is driven to move together, and the discharge nozzle 3101 is located on the movement path of the knocking block 55. In actual use, after each pouring and discharging, the rotating arm 53 is driven to rotate up and down around the hinge seat 54 by the driving mechanism 56, and the crust on the discharge nozzle 3101 is knocked off by the knocking block 55, which is simple to operate and saves labor costs and time.

[0076] In one embodiment, if Fig.16 As shown, a T-slot 5301 is provided at the bottom of one end of the rotating arm 53 away from the housing 52, and the knocking block 55 is a T-block adapted to the T-slot 5301. The knocking block 55 is slidably inserted in the T-slot 5301, and the knocking block 55 and the T-slot 5301 are locked by a locking screw.

[0077] It should be noted that, since the discharge nozzle 3101 crust cleaning device 5 is arranged relatively close to the discharge nozzle 3101 on the furnace body 31, and the temperature around the discharge nozzle 3101 is relatively high when discharging materials, in order to prevent the rotating arm 53 from being exposed to a high temperature environment for a long time and affecting its performance and service life, in one embodiment, Fig.17 As shown, the interior of the rotating arm 53 is provided with two water cooling channels extending along the length direction of the rotating arm 53, and the two water cooling channels are connected at one end of the rotating arm 53 near the knocking block 55. The end of the rotating arm 53 located inside the casing 52 is respectively provided with an inlet head 531 and a water outlet head 532 connected to the two water cooling channels, the inlet head 531 is connected to the water inlet pipe 5311, and the water outlet head 532 is connected to the return water pipe 5321, so that the rotating arm 53 is cooled by circulating water.

[0078] In addition, the casing 52 includes a main shell and a back cover, the opening is arranged on one side of the main shell, the back cover is opposite to the side of the main shell where the opening is arranged, the shell wall of the main shell is a sandwich structure, and a water cooling cavity is formed inside, and the outer wall of the main shell is provided with a water inlet joint 5201 and a water outlet joint 5202 connected to the water cooling cavity.

[0079] With this arrangement, the casing 52 is cooled by cooling water to ensure that the drive mechanism 56 and pipelines and other structures inside the casing 52 are in a suitable temperature environment, thereby ensuring that the drive mechanism 56 and pipelines and other structures work stably and extending their service life.

[0080] In one embodiment, if Fig.17 As shown, the driving mechanism 56 includes a cylinder, which is arranged vertically in the housing 52, and the cylinder body of the cylinder is hinged to the inner wall of the main shell of the housing 52 through a support (that is, the cylinder body can rotate relative to the main shell), and the telescopic rod of the cylinder is hinged to one end of the rotating arm 53 extending into the housing 52. When the cylinder is actuated, the telescopic rod on it moves up and down, driving the rotating arm 53 to rotate up and down around the hinge seat 54.

[0081] It is conceivable that in other embodiments, the drive mechanism 56 may also be a linear drive mechanism 56 such as an oil cylinder or an electric cylinder.

[0082] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0083] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A non-metal smelting furnace, characterized in that: It includes concrete foundation, supporting platform, smelting furnace, dust extraction pipe, crust cleaning device, operating platform, electrode lifting device and power supply equipment; The support platform is arranged on the concrete foundation, the smelting furnace, the operating platform and the electrode lifting device are all arranged on the support platform, and the electrode lifting device is located at the rear of the smelting furnace, and the operating platform is located above the smelting furnace; the smelting furnace comprises a furnace body and a furnace cover arranged on the top of the furnace body, a discharge nozzle for discharging materials is arranged in the middle of the furnace body, a feeding hole and an electrode insertion hole are arranged on the top of the furnace cover, a dust extraction port is arranged on the side of the furnace cover, and the dust extraction pipe is connected to the dust extraction port; the crust cleaning device is installed on the outer wall of the furnace body on one side of the discharge nozzle, and is used to clean the crust on the discharge nozzle; The furnace body includes a furnace body shell and a cooling coil, the furnace body shell includes a lower shell and an upper cylinder connected to the upper end of the lower shell, the discharge nozzle is provided at the connection between the lower shell and the upper cylinder, the side of the upper cylinder is provided with an inspection port, the outer wall of the upper cylinder is provided with a furnace door for opening and closing the inspection port, the cooling coil is evenly coiled on the outer wall of the lower shell from top to bottom, the cross-section of the cooling coil is semicircular, the cooling coil and the outer wall of the lower shell form a cooling water flow channel with a semicircular cross-section, and the cooling coil is provided with a water inlet and a water outlet.

2. The non-metal smelting furnace according to claim 1, characterized in that: It also includes a water distributor and a water collector, and the cooling coil is provided with a plurality of water inlets and a plurality of water outlets at intervals from top to bottom; the water distributor includes a main water inlet pipe and a plurality of water distributors connected to the main water inlet pipe, the diameter of the water distributor is smaller than the diameter of the main water inlet pipe, and the ends of the plurality of water distributors away from the main water inlet pipe are respectively connected to the plurality of water inlets in a one-to-one correspondence; the water collector includes a main return water pipe and a plurality of water collectors connected to the main return water pipe, the diameter of the water collector is smaller than the diameter of the main return water pipe, and the ends of the plurality of water collectors away from the main return water pipe are respectively connected to the plurality of water outlets in a one-to-one correspondence.

3. The non-metal smelting furnace according to claim 1, characterized in that: The support platform includes a support mechanism, a sliding mechanism, a bearing plate and a pushing mechanism. The support mechanism includes two front supporting legs and two rear supporting legs. The length of the two front supporting legs is greater than that of the two rear supporting legs. The front supporting legs and the rear supporting legs are vertically arranged to make the support mechanism rectangular. The sliding mechanism slides in a direction perpendicular to the length of the rear supporting legs. One end of the bearing plate is hinged to the front supporting legs, and the other end is used to overlap the sliding mechanism or the rear supporting legs. The pushing mechanism is arranged between the front supporting legs and the rear supporting legs, and the pushing mechanism is used to push the bearing plate to rotate.

4. The non-metal smelting furnace according to claim 3, characterized in that: The bearing plate is in a first plane when overlapped on the sliding mechanism, and in a second plane when overlapped on the supporting rear leg. The first plane is horizontal, and the angle between the first plane and the second plane is 5°.

5. The non-metal smelting furnace according to claim 3, characterized in that: The sliding mechanism comprises a crossbeam, which is perpendicular to the length direction of the supporting rear legs and is arranged at the top end of the supporting rear legs. A sliding block is arranged on the crossbeam, and the sliding block slides along the length direction of the crossbeam.

6. The non-metal smelting furnace according to claim 1, characterized in that: The furnace hood includes a cylinder, a first water-cooling plate and a second water-cooling plate, the dust extraction port is arranged on the side of the cylinder, the first water-cooling plate is arranged on the bottom of the cylinder, the first water-cooling plate is installed on the opening at the top of the furnace body, the middle part of the first water-cooling plate is provided with a avoidance hole, the interior of the first water-cooling plate is provided with a first water-cooling cavity, the side of the first water-cooling plate is provided with a first water inlet pipe and a first water outlet pipe communicating with the first water-cooling cavity; the second water-cooling plate is arranged on the top of the cylinder, the feeding hole and the three electrode insertion holes are arranged on the second water-cooling plate, the vertical projections of the feeding hole and the three electrode insertion holes all fall into the avoidance hole on the first water-cooling plate, the interior of the second water-cooling plate is provided with a second water-cooling cavity, and the side of the second water-cooling plate is provided with a second water inlet pipe and a second water outlet pipe communicating with the second water-cooling cavity.

7. The non-metal smelting furnace according to claim 6, characterized in that: The first water-cooling plate and the second water-cooling plate are both hollow sandwich structures.

8. The non-metal smelting furnace according to claim 1, characterized in that: The dust extraction pipe includes a dust extraction hood, a four-way pipe joint, a main pipe body, a first sealing cover and a second sealing cover. The first interface of the four-way pipe joint is connected to one end of the dust extraction hood, and the other end of the dust extraction hood is used to dock with the dust extraction port. The main pipe body is arranged vertically, and the top of the main pipe body is connected to the second interface of the four-way pipe joint. The first sealing cover is arranged on the third interface of the four-way pipe joint, and the second sealing cover is arranged on the fourth interface of the four-way pipe joint. A pipe interface for connecting a pipeline is provided on the lower end side wall of the main pipe body.

9. The non-metal smelting furnace according to claim 1, characterized in that: The crust cleaning device includes a mounting bracket, a casing, a rotating arm, a hinged seat, a knocking block and a driving mechanism; the casing is arranged on the mounting bracket, and the mounting bracket is installed on the outer wall of the furnace body on one side of the discharge nozzle, the casing is provided with an opening on a side close to the discharge nozzle, one end of the rotating arm extends into the casing through the opening, the hinged seat is arranged in the opening and is hinged to the rotating arm, the other end of the rotating arm is located above the discharge nozzle and is fixed with the knocking block, the rotating arm can rotate up and down around the hinged seat, and the discharge nozzle is located on the movement path of the knocking block, the driving mechanism is arranged in the casing and connected to the end of the rotating arm extending into the casing, and the driving mechanism is used to drive the rotating arm to rotate up and down around the hinged seat to knock off the crust on the discharge nozzle through the knocking block.

10. The non-metal smelting furnace according to claim 9, characterized in that: Two water cooling channels extending along the length direction of the rotating arm are arranged inside the rotating arm, and the two water cooling channels are connected at one end of the rotating arm near the knocking block, and one end of the rotating arm located inside the housing is respectively provided with a water inlet head and a water outlet head connected to the two water cooling channels, the water inlet head is connected to a water inlet pipe, and the water outlet head is connected to a water return pipe; The casing includes a main shell and a back cover, the opening is arranged on one side of the main shell, the back cover is opposite to the side of the main shell where the opening is arranged, the shell wall of the main shell is a sandwich structure, a water cooling cavity is formed inside, and the outer wall of the main shell is provided with a water inlet joint and a water outlet joint connected to the water cooling cavity.

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