Efficient energy-saving environment-friendly electric furnace

Abstract

The efficient, energy-saving and environment-friendly electric furnace comprises a furnace body and a furnace cover arranged at the top of the furnace body, a plurality of plasma combustion devices and in-furnace intermittent monitoring devices are arranged on the furnace body, and all the plasma combustion devices and the in-furnace intermittent monitoring devices are evenly arranged in the circumferential direction of the furnace cover. Automatic operation is adopted, convenience, rapidness, safety and reliability are achieved, the combustion condition in the electric furnace can be intermittently monitored, and the high-temperature-resistant camera is prevented from being damaged in a high-temperature environment for a long time. And meanwhile, a plurality of plasma combustion devices are uniformly arranged on the furnace cover to support combustion of garbage on the inner edge and the outer edge of the furnace body, so that the garbage incineration efficiency is improved, and garbage incineration is more sufficient. The plasma combustion device and the in-furnace intermittent monitoring device both adopt the mode of bottom heat insulation and circumferential water cooling, and it is ensured that a plasma igniter and a high-temperature-resistant camera are located at the good working temperature.

Description

Technical Field

[0001] The invention belongs to the technical field of electric furnaces, and in particular relates to a high-efficiency, energy-saving and environment-friendly electric furnace. Background Art

[0002] Garbage incineration furnace is a kind of industrial electric furnace. Existing garbage incineration furnace has the following problems in operation: 1) The furnace cover of the electric furnace is round, and an electrode hole for passing the ignition electrode is opened in the center of the furnace cover. The ignition and combustion of the electric furnace mainly rely on the ignition electrode. This ignition and combustion method makes the garbage near the center of the furnace body burn more efficiently and burn more fully. The garbage around the furnace body has a relatively low combustion efficiency and does not burn very fully, which affects the garbage incineration efficiency and wastes more electricity.

[0003] 2) Currently, the internal monitoring of electric furnaces usually involves monitoring of parameters such as temperature, pressure, and humidity. It is rare to conduct multi-point video monitoring of the internal combustion conditions of the electric furnace to see whether the garbage burning in the furnace is in a molten state. If the internal combustion conditions of the garbage in the electric furnace are observed in real time, the feed amount and burner power can be adjusted in real time based on the observation results, which can make the garbage burn more fully and more energy-efficient.

[0004] Therefore, there is an urgent need to optimize and improve the existing electric furnace. Summary of the invention

[0005] In order to solve the above technical problems existing in the prior art, the present invention provides a high-efficiency, energy-saving and environmentally friendly electric furnace which can assist combustion of garbage around the outer circle inside the furnace body to improve the incineration efficiency and can monitor the combustion status inside the furnace body in real time.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: a high-efficiency, energy-saving and environmentally friendly electric furnace, comprising a furnace body and a furnace cover arranged on the top of the furnace body, wherein a plurality of plasma combustion devices and furnace intermittent monitoring devices are arranged on the furnace body, and all the plasma combustion devices and furnace intermittent monitoring devices are evenly arranged along the circumferential direction of the furnace cover; The intermittent monitoring device in the furnace includes a fixed seat and a heat-insulating seat. The fixed seat is arranged on the outer side or the top of the furnace cover, and the heat-insulating seat is arranged on the top of the furnace cover. The fixed seat is provided with a rotating and lifting integrated mechanism. The heat-insulating seat and the furnace cover are provided with corresponding upward and downward transparent perspective holes, and a blocking column is arranged in the perspective hole. The heat-insulating seat is provided with a first water-cooling sleeve assembly, and the upper port of the perspective hole is located inside the first water-cooling sleeve assembly. The rotating and lifting integrated mechanism is connected with a hanger, and a high-temperature resistant camera is connected to the hanger. The lower end of the high-temperature resistant camera is provided with a press-type clutch hanging mechanism that cooperates with the upper end of the blocking column.

[0007] The rotating and lifting integrated mechanism includes an inner cylinder rod perpendicular to the upper surface of the furnace cover, the lower end of the inner cylinder rod is arranged on a fixed seat through a bottom plate, the outer cylinder rod is slidably connected to the outside of the inner cylinder rod, the upper end of the outer cylinder rod is fixedly provided with a cover plate, a support rod located inside the inner cylinder rod on the bottom plate, a hydraulic cylinder is hinged on the upper end of the support rod, the upper end of the hydraulic cylinder is connected to the bottom surface of the cover plate by a hinge, a slideway groove is opened on the cylinder rod wall of the inner cylinder rod, the slideway groove includes a lower vertical groove, a middle spiral groove and an upper vertical groove, the length directions of the lower vertical groove and the upper vertical groove are parallel to the center line of the inner cylinder rod, the lower end and the upper end of the middle spiral groove are respectively connected to the upper end of the lower vertical groove and the lower end of the upper vertical groove, and a guide column moving along the slideway groove is fixedly provided on the outer cylinder rod; The hanger includes a boom and a rod. The boom is perpendicular to the outer tube rod. One end of the boom is fixedly connected to the upper side of the outer tube rod. The upper end of the rod is vertically fixedly connected to the lower part of the other end of the boom. The lower end of the rod is fixedly connected to the upper end of the high-temperature resistant camera.

[0008] The heat-insulating seat comprises an outer shell and a refractory material arranged in the outer shell. One side of the outer shell is connected to the furnace cover by a hinge, and the outer shell is fixedly connected to the furnace cover by connecting bolts around the outer shell. The first water-cooling sleeve assembly comprises a first outer cylinder, a first heat insulation board is arranged at the lower end of the first outer cylinder, a first annular positioning sleeve is arranged at the top of the outer shell, the lower end of the first outer cylinder is interference-fitted in the first positioning sleeve, the bottom surface of the first heat insulation board contacts the top surface of the outer shell, and a first spiral water-cooling pipe is arranged in the inner circle of the first outer cylinder along the circumferential direction; a first cold water inlet pipe passing through the lower part of the first outer cylinder is arranged at the lower end of the first water-cooling pipe, and a first water outlet pipe passing through the upper part of the first outer cylinder is arranged at the upper end of the first water-cooling pipe; The high temperature resistant camera comprises a camera body, the lower end of which is fixedly connected with a hollow camera rod, the lower end of which is provided with a high temperature resistant lens; the high temperature resistant camera is coaxially installed in a spiral first water cooling tube, and the lower end of the hollow camera rod extends into the perspective hole.

[0009] At least three push-type clutch hanging mechanisms are evenly arranged along the outer circle of the lower end of the hollow camera rod, and each push-type clutch mechanism includes an ear plate, a hanging pressing block and a slow rebound component. The inner end of the ear plate is fixedly connected to the hollow camera rod, and the inner end of the hanging pressing block is rotatably connected to the outer end of the ear plate through a pin shaft. A limit block crimped with the bottom of the ear plate is integrally provided on the lower side of the inner end of the hanging pressing block; when the limit block contacts the bottom of the ear plate, the length direction of the hanging pressing block is in a horizontal state; the slow rebound component is arranged on the outer circle of the hollow camera rod just above the ear plate, and the telescopic direction of the slow rebound component is arranged along the radial direction of the hollow camera rod. When the hanging pressing block rotates upward with the pin shaft as the center, it presses the outer end of the slow rebound component to cause the slow rebound component to contract radially.

[0010] The slow rebound component includes a fixed shaft, a telescopic sleeve, a spring, a pressure cap and a high-temperature resistant friction washer. The outer circle of the hollow camera rod is radially provided with a groove and a threaded hole arranged along the bottom of the groove. The inner end of the fixed shaft extends into and is threadedly connected to the threaded hole. The telescopic sleeve is coaxially sleeved on the fixed shaft. There is an annular gap between the inner circle of the telescopic sleeve and the outer circle of the fixed seat. The inner circle of the pressure cap is threadedly connected to the outer end of the telescopic sleeve. The spring is sleeved on the outside of the fixed shaft and the telescopic sleeve. The two ends of the spring are respectively crimped with the pressure cap and the bottom surface of the groove. The high-temperature resistant friction washer is sleeved on the fixed shaft. The outer circle of the high-temperature resistant friction washer is slidably friction-matched with the inner circle of the telescopic sleeve.

[0011] An outer limit ring is integrally provided at the outer end of the fixed shaft, and an inner limit ring is integrally provided at the inner end of the telescopic sleeve. The outer diameter of the outer limit ring is larger than the outer diameter of the fixed shaft and smaller than the inner diameter of the telescopic sleeve, and the inner diameter of the inner limit ring is larger than the outer diameter of the fixed shaft and smaller than the inner diameter of the telescopic sleeve.

[0012] The blocking column is a cone structure with a thick top and a thin bottom. The upper end of the blocking column is integrally provided with a clutch lifting cylinder with the same center line. The lower part of the outer circle of the clutch lifting cylinder is provided with an annular groove. The upper end of the clutch lifting cylinder is integrally provided with a lifting ring. The inner circle of the clutch lifting cylinder is provided with a conical surface with a larger top and a smaller bottom below the lifting ring. The inner circle of the clutch lifting cylinder is provided with a cylindrical surface below the conical surface. The inner diameter of the cylindrical surface, the diameter of the end below the conical surface and the inner diameter of the lifting ring are equal. When the length direction of the hanging and pressing blocks outside the hollow camera rod is in a horizontal state, the diameter of the circle formed by the outermost connecting lines of all the hanging and pressing blocks is larger than the inner diameter of the lifting ring and smaller than the uppermost diameter of the conical surface; When the length direction of the hanging pressing block outside the hollow camera rod is in a vertical state, the diameter of the circle formed by the outermost connecting lines of all the hanging pressing blocks is smaller than the inner diameter of the lifting ring.

[0013] The furnace cover includes a central disc portion and six sector-shaped portions, each of which has a central angle of 60°. The six sector-shaped portions are evenly arranged along the outer circle of the disc portion. An electrode hole is provided in the center of the disc portion, and an ignition electrode extending into the furnace body is inserted into the electrode hole. There are four plasma combustion devices and two intermittent monitoring devices in the furnace. The four plasma combustion devices and the two intermittent monitoring devices in the furnace are respectively arranged on one sector-shaped portion, and the two intermittent monitoring devices in the furnace are symmetrically arranged about the center line of the electrode hole. A feed port and a smoke exhaust port are respectively provided on two adjacent sector-shaped portions.

[0014] The plasma combustion device includes a hinge support fixed on the top of the furnace cover, a mounting shell is rotatably connected to the hinge support, the interior of the mounting shell is filled with refractory bricks, a fixing plate is provided at the bottom around the mounting shell, the fixing plate is connected to the furnace cover through mounting bolts, a second water-cooling sleeve assembly is provided on the top of the mounting shell, and combustion-supporting holes that are transparent from top to bottom are correspondingly opened on the mounting shell, the refractory bricks and the furnace cover, the upper port of the combustion-supporting hole is connected to the interior of the second water-cooling sleeve assembly, and a plasma igniter is provided inside the second water-cooling sleeve assembly.

[0015] The second water-cooling sleeve assembly includes a second outer cylinder, a second heat insulation plate that fits the top surface of the mounting shell is provided at the lower end of the second outer cylinder, a through hole corresponding to the combustion-supporting hole is opened on the second heat insulation plate, an annular second positioning sleeve is provided on the top of the mounting shell, the lower end of the second outer cylinder is interference fitted in the second positioning sleeve, a spiral second water-cooling pipe is provided on the inner circle of the second outer cylinder along the circumferential direction, a cylinder cover is provided on the upper port of the second outer cylinder, a second cold water inlet pipe that passes through the second outer cylinder is provided at the lower end of the second water-cooling pipe, a second water outlet pipe that passes through the cylinder cover is provided at the upper end of the second water-cooling pipe, and a plasma igniter is coaxially installed in the spiral second water-cooling pipe, and a nozzle at the lower end of the plasma igniter extends into the combustion-supporting hole.

[0016] By adopting the above technical solution, the present invention has the following technical effects: 1) The heat insulation seat is set on the furnace cover, which is the first barrier to protect the normal operation of the high temperature camera. The first water cooling sleeve assembly surrounds the camera body of the high temperature camera and cools the camera body by water cooling, which is the second barrier to protect the normal operation of the high temperature camera.

[0017] 2) The rotating and lifting integrated mechanism uses a hydraulic cylinder to drive the outer cylinder rod to slide up and down outside the inner cylinder rod and realizes lifting and rotating at the same time through the guiding matching structure of the guide column and the slideway groove, so as to achieve accurate placement of the high-temperature camera and the blocking column at the perspective hole and the U-shaped hole of the two-station movable frame.

[0018] 3) The hanging pressing block and slow rebound component of the push-type clutch hanging mechanism are made of high temperature resistant materials. The hanging pressing block cooperates with the clutch lifting cylinder (lifting ring and conical surface) at the upper end of the blocking column, and the slow rebound component is compressed and slowly rebounded after being compressed, so as to achieve the purpose of lifting connection and separation between the hanging pressing block and the clutch lifting cylinder.

[0019] 4) The structure of the slow rebound component is convenient for installation and disassembly. By setting a high-temperature resistant friction washer, it is frictionally connected with the fixed shaft and the telescopic sleeve respectively. When the telescopic sleeve is compressed, the spring presses the telescopic sleeve to restore its length slowly, leaving enough time for the hanging pressing block to disengage from the clutch hoisting cylinder.

[0020] 5) The refractory bricks installed in the installation shell are the first barrier to protect the normal operation of the plasma igniter. The second water-cooling sleeve assembly surrounds the plasma igniter and cools the plasma igniter by water cooling, which is the second barrier to protect the normal operation of the plasma igniter.

[0021] 6) The ignition and burning of garbage in the center of the furnace cover mainly relies on the ignition electrode, and the combustion support on the outside of the furnace body relies on the plasma igniter. This basically covers the entire internal space of the furnace body, greatly improving the combustion efficiency and making the garbage in the furnace body burn more fully.

[0022] 7) When inspecting the nozzle of the plasma igniter, the mounting bolts can be removed, and the mounting shell, plasma igniter and first water-cooling sleeve assembly can be lifted up with the hinge support as the fulcrum. The second positioning sleeve is fixed on the top of the second mounting shell, and the outer cylinder of the second water-cooling sleeve assembly is interference-fitted in the second positioning sleeve. The second outer cylinder is then welded to the second positioning sleeve. The second water-cooling pipe is arranged along the outer circle of the plasma igniter, and cold water is introduced into the second cold water inlet pipe at the bottom. The hot water after heat exchange is discharged through the second water outlet pipe at the top, which has a good cooling effect and ensures that the plasma igniter has a good working environment.

[0023] 8) When inspecting the high temperature resistant lens, the fixing bolts can be removed and the housing can be removed from the furnace cover. The first positioning sleeve is fixed on the top of the first mounting shell, and the first outer cylinder of the first water cooling sleeve assembly is interference fitted in the first positioning sleeve. The first outer cylinder is then welded to the first positioning sleeve. The first water cooling pipe is arranged along the outer circle of the high temperature resistant camera. Cold water is introduced into the first cold water inlet pipe at the bottom, and the hot water after heat exchange is discharged through the first water outlet pipe at the top, which has a good cooling effect and ensures that the high temperature resistant camera has a good working environment.

[0024] In summary, the present invention opens a perspective hole on the furnace cover. During normal operation, the blocking column blocks the perspective hole. When it is necessary to observe the combustion condition inside the furnace body, a rotating lifting integrated mechanism is used to automatically take out the blocking column and place the blocking column in a designated place, and then the high-temperature resistant camera is used to observe through the perspective hole. After the observation is completed, the blocking column is taken back to block the perspective hole. This set of cyclic operation procedures are all automated, which is convenient, fast, safe and reliable. It can realize intermittent monitoring of the combustion condition inside the electric furnace and avoid the high-temperature resistant camera from being damaged in a high-temperature environment for a long time. At the same time, the present invention evenly arranges multiple plasma combustion devices on the furnace cover to assist the combustion of garbage at the inner and outer edges of the furnace body, and at the same time arranges a real-time monitoring device for the combustion condition inside the furnace body on the furnace cover, thereby improving the incineration efficiency of garbage and making the garbage incineration more sufficient. Both the plasma combustion device and the intermittent monitoring device in the furnace adopt the method of bottom insulation and circumferential water cooling to ensure that the plasma igniter and the high-temperature resistant camera are at a good working temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the top view of the structure of the present invention; Figure 2 yes Figure 1 Middle AA section view; Figure 3 is a schematic diagram of a plugging column blocking a perspective hole; Figure 4 It is a schematic diagram of the combustion condition inside the furnace body with the hollow camera rod of the high temperature resistant camera extended into the perspective hole; Figure 5 It is a structural schematic diagram of a rotating and lifting integrated mechanism; Figure 6 It is a structural schematic diagram of a two-station movable frame; Figure 7 yes Figure 6 A top view of Figure 8 It is a structural schematic diagram of a push-type clutch hanging mechanism hoisting a blocking column through a clutch hoisting tube; Fig. 9 It is a schematic diagram of the three-step process of separating the hanging pressing block from the clutch lifting cylinder; Fig.10 yes Fig. 9 The enlarged view of point I in the middle; Fig.11 yes Fig.10 Schematic diagram of the slow rebound component pressing the hanging pressing block outwards when rebounding and stretching; Fig.12 It is a schematic diagram of the working state of the rotating and lifting integrated mechanism when the blocking column blocks the perspective hole; Fig.13 is a schematic diagram of the working state of the rotating and lifting integrated mechanism when the blocking column is located above the first water-cooling sleeve assembly; Fig.14 It is a schematic diagram of the working state of the rotating and lifting integrated mechanism when the hollow camera rod is extended into the perspective hole; Fig.15 yes Figure 1 Middle BB section view; Fig.16 yes Fig.15 A magnified view of the plasma combustion device. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings and examples.

[0027] Figure 1-Figure 16 As shown, a high-efficiency, energy-saving and environmentally friendly electric furnace of the present invention includes a furnace body 55 and a furnace cover 1 arranged on the top of the furnace body 55, and the furnace body 55 is provided with a plurality of plasma combustion devices 56 and intermittent monitoring devices 57 in the furnace, and all the plasma combustion devices 56 and intermittent monitoring devices 57 in the furnace are evenly arranged along the circumferential direction of the furnace cover.

[0028] The intermittent monitoring device 57 in the furnace includes a fixed seat 2 and a heat-insulating seat 3. The fixed seat 2 is arranged on the outer side or the top of the furnace cover 1, and the heat-insulating seat 3 is arranged on the top of the furnace cover 1. The fixed seat 2 is provided with a rotating and lifting integrated mechanism 6. The heat-insulating seat 3 and the furnace cover 1 are correspondingly provided with a perspective hole 4 which is transparent up and down, and a blocking column 5 is arranged in the perspective hole 4. The heat-insulating seat 3 is provided with a first water-cooling sleeve assembly 7, and the upper end of the perspective hole 4 is located inside the first water-cooling sleeve assembly 7. The rotating and lifting integrated mechanism 6 is connected with a hanger 8, and a high-temperature resistant camera 9 is connected to the hanger 8. The lower end of the high-temperature resistant camera 9 is provided with a press-type clutch hanging mechanism 10 which cooperates with the upper end of the blocking column 5.

[0029] The rotating and lifting integrated mechanism 6 includes an inner cylinder rod 11 perpendicular to the upper surface of the furnace cover 1, the lower end of the inner cylinder rod 11 is arranged on the fixed seat 2 through a bottom plate 12, the outer cylinder rod 13 is slidably connected to the outside of the inner cylinder rod 11, and a cover plate 14 is fixed to the upper end of the outer cylinder rod 13. A support rod 15 is located inside the inner cylinder rod 11 on the bottom plate 12, and a hydraulic cylinder 16 is hinged on the upper end of the support rod 15. The upper end of the hydraulic cylinder 16 is connected to the bottom surface of the cover plate 14 by a hinge. A slide groove is opened on the cylinder rod wall of the inner cylinder rod 11, and the slide groove includes a lower vertical groove 18, a middle spiral groove 19 and an upper vertical groove 20. The length directions of the lower vertical groove 18 and the upper vertical groove 20 are parallel to the center line of the inner cylinder rod 11, and the lower end and upper end of the middle spiral groove 19 are respectively connected to the upper end of the lower vertical groove 18 and the lower end of the upper vertical groove 20, and a guide column 21 moving along the slide groove is fixed on the outer cylinder rod 13.

[0030] The hanger 8 includes a boom 22 and a rod 23. The boom 22 is perpendicular to the outer tube rod 13. One end of the boom 22 is fixedly connected to the upper side of the outer tube rod 13. The upper end of the rod 23 is vertically fixedly connected to the lower part of the other end of the boom 22. The lower end of the rod 23 is fixedly connected to the upper end of the high temperature resistant camera 9.

[0031] The heat insulating seat 3 comprises a shell 24 and a refractory material 25 disposed in the shell 24. One side of the shell 24 is connected to the furnace cover 1 by a hinge, and the shell 24 is fixedly connected to the furnace cover 1 by connecting bolts around the periphery. The heat insulating seat 3 is convenient to disassemble and install.

[0032] The first water-cooling sleeve assembly 7 includes a first outer cylinder 26, a first heat insulation plate 27 is provided at the lower end of the first outer cylinder 26, an annular first positioning sleeve 28 is provided at the top of the outer shell 24, the lower end of the first outer cylinder 26 is interference fitted in the first positioning sleeve 28, the bottom surface of the first heat insulation plate 27 is in contact with the top surface of the outer shell 24, a spiral first water-cooling pipe 29 is provided along the circumferential direction of the inner circle of the first outer cylinder 26, a first cold water inlet pipe 58 passing through the lower part of the first outer cylinder 26 is provided at the lower end of the first water-cooling pipe 29, and a first water outlet pipe 59 passing through the upper part of the first outer cylinder is provided at the upper end of the first water-cooling pipe 29.

[0033] The high temperature resistant camera 9 includes a camera body 30, the lower end of which is fixedly connected to a hollow camera rod 31, and the lower end of the hollow camera rod 31 is provided with a high temperature resistant lens; the high temperature resistant camera 9 is coaxially installed in the spiral first water-cooling tube 29, and the lower end of the hollow camera rod 31 extends into the perspective hole 4.

[0034] At least three push-type clutch hanging mechanisms 10 are evenly arranged along the outer circle of the lower end of the hollow camera rod 31, and each push-type clutch mechanism includes an ear plate 32, a hanging pressing block 33 and a slow rebound component 34. The inner end of the ear plate 32 is fixedly connected to the hollow camera rod 31, and the inner end of the hanging pressing block 33 is rotatably connected to the outer end of the ear plate 32 through a pin shaft 35. A limit block 36 is integrally provided on the lower side of the inner end of the hanging pressing block 33 and is pressed against the bottom of the ear plate 32; when the limit block 36 contacts the bottom of the ear plate 32, the length direction of the hanging pressing block 33 is in a horizontal state; the slow rebound component 34 is arranged on the outer circle of the hollow camera rod 31 just above the ear plate 32, and the telescopic direction of the slow rebound component 34 is arranged along the radial direction of the hollow camera rod 31. When the hanging pressing block 33 rotates upward with the pin shaft 35 as the center, it presses the outer end of the slow rebound component 34 to cause the slow rebound component 34 to contract radially.

[0035] The slow rebound component 34 includes a fixed shaft 37, a telescopic sleeve 38, a spring 39, a pressure cap 40 and a high temperature resistant friction washer 41. The outer circle of the hollow camera rod 31 is radially provided with a groove 42 and a threaded hole arranged along the bottom of the groove 42. The inner end of the fixed shaft 37 extends into and is threadedly connected to the threaded hole. The telescopic sleeve 38 is coaxially sleeved on the fixed shaft 37. There is an annular gap between the inner circle of the telescopic sleeve 38 and the outer circle of the fixed seat 2. The inner circle of the pressure cap 40 is threadedly connected to the outer end of the telescopic sleeve 38. The spring 39 is sleeved on the outside of the fixed shaft 37 and the telescopic sleeve 38. The two ends of the spring 39 are respectively crimped with the pressure cap 40 and the bottom surface of the groove 42. The high temperature resistant friction washer 41 is sleeved on the fixed shaft 37. The outer circle of the high temperature resistant friction washer 41 is slidably frictionally matched with the inner circle of the telescopic sleeve 38.

[0036] An outer limit ring 43 is integrally provided at the outer end of the fixed shaft 37, and an inner limit ring 44 is integrally provided at the inner end of the telescopic sleeve 38. The outer diameter of the outer limit ring 43 is larger than the outer diameter of the fixed shaft 37 and smaller than the inner diameter of the telescopic sleeve 38, and the inner diameter of the inner limit ring 44 is larger than the outer diameter of the fixed shaft 37 and smaller than the inner diameter of the telescopic sleeve 38.

[0037] The blocking column 5 is a conical structure with a thick upper part and a thin lower part. A clutch lifting cylinder 45 with the same center line is integrally provided at the upper end of the blocking column 5. An annular groove 46 is provided at the lower part of the outer circle of the clutch lifting cylinder 45. A lifting ring 47 is integrally provided at the upper end of the clutch lifting cylinder 45. A conical surface 48 with a larger upper part and a smaller lower part is provided at the lower part of the inner circle of the clutch lifting cylinder 45. A cylindrical surface 49 is provided at the lower part of the inner circle of the clutch lifting cylinder 45. The inner diameter of the cylindrical surface 49, the diameter of the lower end of the conical surface 48 and the inner diameter of the lifting ring 47 are equal. When the length direction of the hanging and pressing blocks 33 outside the hollow camera rod 31 is in a horizontal state, the diameter of the circle formed by the outermost connecting lines of all the hanging and pressing blocks 33 is larger than the inner diameter of the lifting ring 47 and smaller than the uppermost diameter of the conical surface 48; When the length direction of the hanging and pressing blocks 33 outside the hollow camera rod 31 is in a vertical state, the diameter of the circle formed by the outermost connecting lines of all the hanging and pressing blocks 33 is smaller than the inner diameter of the lifting ring 47 .

[0038] The furnace cover 1 includes a central disk portion 60 and six fan-shaped portions 61, each of which has a central angle of 60°. The six fan-shaped portions 61 are evenly arranged along the outer circle of the disk portion 60, and an electrode hole 62 is provided in the center of the disk portion 60. An ignition electrode (not shown) extending into the furnace body 55 is inserted into the electrode hole 62. Four plasma combustion devices 56 are provided, and two intermittent monitoring devices in the furnace are provided. The four plasma combustion devices 56 and the two intermittent monitoring devices 27 in the furnace are respectively provided on one fan-shaped portion 61, and the two intermittent monitoring devices 57 in the furnace are symmetrically arranged about the center line of the electrode hole 62, and a feed port 63 and a smoke exhaust port 64 are respectively provided on two adjacent fan-shaped portions 61.

[0039] The plasma combustion device 56 includes a hinge support 65 fixed on the top of the furnace cover 1, and a mounting shell 66 is rotatably connected to the hinge support 65. The interior of the mounting shell 66 is filled with refractory bricks 67. A fixing plate 68 is provided at the bottom of the mounting shell 66. The fixing plate 68 is connected to the furnace cover 1 through mounting bolts. A second water-cooling sleeve assembly is provided on the top of the mounting shell 66. The mounting shell 66, the refractory bricks 67 and the furnace cover 1 are correspondingly provided with combustion-supporting holes 69 that are transparent from top to bottom. The upper end of the combustion-supporting hole 69 is connected to the interior of the second water-cooling sleeve assembly, and a plasma igniter 70 is provided inside the second water-cooling sleeve assembly.

[0040] The second water-cooling sleeve assembly includes a second outer cylinder 71, a second heat insulation plate 72 which is in contact with the top surface of the mounting shell 66 is provided at the lower end of the second outer cylinder 71, a through hole corresponding to the combustion-supporting hole 69 is opened on the second heat insulation plate 72, an annular second positioning sleeve 73 is provided on the top of the mounting shell 66, the lower end of the second outer cylinder 71 is interference fitted in the second positioning sleeve 73, a spiral second water-cooling pipe 74 is provided along the circumferential direction of the inner circle of the second outer cylinder 71, a cylinder cover 75 is provided at the upper end of the second outer cylinder 71, a second cold water inlet pipe 76 which passes through the second outer cylinder 71 is provided at the lower end of the second water-cooling pipe 74, a second water outlet pipe 77 which passes through the cylinder cover 75 is provided at the upper end of the second water-cooling pipe 74, and the plasma igniter 70 is coaxially installed in the spiral second water-cooling pipe 74, and the nozzle at the lower end of the plasma igniter 70 extends into the combustion-supporting hole 69.

[0041] The ignition and burning of garbage in the center of the furnace body 55 mainly relies on the ignition electrode, and the combustion support inside and outside the furnace body 55 relies on three plasma igniters 70, so that the entire internal space of the furnace body 55 is basically covered, the combustion efficiency is greatly improved, and the garbage in the furnace body 55 is burned more fully.

[0042] The intermittent monitoring device 57 in the furnace of the present invention is provided with three (observation points) on the furnace cover 1, which can observe the garbage combustion conditions at different points inside the electric furnace. When the intermittent monitoring device 57 in the furnace of the present invention is working normally, the blocking column 5 is inserted into the perspective hole 4 to block the perspective hole 4. When it is necessary to observe the inside of the electric furnace, the hydraulic cylinder 16 of the rotating and lifting integrated mechanism 6 is started, and the hydraulic cylinder 16 retracts, driving the outer cylinder rod 13, the hanger 8 and the high-temperature resistant camera 9 to move downward at the same time. The guide column 21 moves downward in the slide groove. When it moves down to the middle spiral groove 19, the guide column 21 drives the outer cylinder rod 13 to rotate around the inner cylinder rod 11 while moving downward. When the guide column 21 moves down to the lower vertical groove 18, the high-temperature resistant camera 9 is just above the first water-cooling sleeve assembly 7 and Coincident with the center line of the first outer cylinder 26, the hydraulic cylinder 16 continues to retract, the guide column 21 moves straight down along the lower vertical groove 18, the outer cylinder rod 13 moves straight down with the hanger 8 and the high temperature resistant camera 9, and the plurality of press-type clutch hanging mechanisms 10 on the outer circle of the lower end of the hollow camera rod 31 at the lower end of the high temperature resistant camera 9 contacts the clutch hanging cylinder 45 at the upper end of the blocking column 5, and the hanging pressing block 33 is blocked by the lifting ring 47. The hanging pressing block 33 rotates upward with the pin shaft 35 as the center line. When the hanging pressing block 33 rotates clockwise upward by about 60°, it presses the pressure cap 40 of the slow rebound component 34, and the pressure cap 40 drives the telescopic sleeve 38 to compress The spring 39 causes the telescopic sleeve 38 to move inwardly along the fixed shaft 37, and the length of the slow rebound component 34 shrinks. After the hanging pressing block 33 rotates 90° clockwise, all the hanging pressing blocks 33 can pass downward through the lifting ring 47 until the hanging pressing block 33 moves down into the conical surface 48 of the clutch lifting tube 45, and the hydraulic cylinder 16 stops. Under the elastic force of the spring 39, the outer end of the spring 39 drives the pressing cap 40, and the pressing cap 40 drives the telescopic sleeve 38 to move outwardly along the fixed shaft 37. Due to the sliding friction cooperation between the outer circle of the high temperature resistant friction washer 41 and the inner circle of the telescopic sleeve 38, the rebound speed of the telescopic sleeve 38 is slow, and the pressing cap 40 drives the hanging pressing The block 33 rotates counterclockwise around the pin shaft 35, and at the same time, the pressure cap 40 rotates to a horizontal state under the action of its own gravity, and the limit block 36 integrated on the lower side of the inner end of the hanging and pressing block contacts the ear plate 32, limiting the hanging and pressing block 33 from continuing to rotate downward. Then the hydraulic cylinder 16 is started, and the hydraulic cylinder 16 extends, driving the outer tube rod 13, the hanger 8, the high-temperature resistant camera 9 and the push-type clutch hanging mechanism 10 to be lifted upward at the same time, and several hanging and pressing blocks 33 contact the lifting ring 47 at the same time, and the clutch lifting tube 45 and the blocking column 5 are lifted by the lifting ring 47, so that the blocking column 5 is taken out from the perspective hole 4.When the guide column 21 moves upward along the lower vertical groove 18 to the uppermost end, the lower end of the blocking column 5 rises to above the upper end of the first water-cooling sleeve assembly 7, and the guide column 21 moves upward into the middle spiral groove 19. The outer cylinder rod 13 rotates while moving upward along the inner cylinder rod 11, thereby driving the hanger 8, the high temperature resistant camera 9 and the blocking column 5 to rotate from the top of the furnace cover 1 to the outside of the furnace cover 1. A two-station movable frame 50 for placing the blocking column 5 is provided on the outside of the furnace cover 1. The bottom of the two-station movable frame 50 is slidably arranged on a horizontal track 51. The two-station movable frame 50 is connected to a cylinder 52 for driving the two-station movable frame 50 to slide along the horizontal track 51. A flat plate 53 is provided on the top of the two-station movable frame 50. The flat plate 53 is provided with a U-shaped hole 54 that is transparent from top to bottom on the side facing the furnace cover 1. The width of the U-shaped hole 54 is equal to the bottom diameter of the annular groove 46. When the guide column 21 moves up to the lower end of the upper vertical groove 20, the clutch hoisting cylinder 45 at the upper end of the blocking column 5 just rotates into the U-shaped hole 54, and the edges on both sides of the U-shaped hole 54 are inserted into the annular groove 46. Then the hydraulic cylinder 16 contracts, and the hydraulic cylinder 16 drives the hanger 8 and the high temperature resistant camera 9 to move down. At this time, the blocking column 5 is fixed on the two-station movable frame 50, and the hanging pressing block 33 of the outer circle of the lower end of the high temperature resistant camera 9 also moves down. The hanging pressing block 33 contacts the conical surface 48 of the inner circle of the clutch hoisting cylinder 45, which is larger on the top and smaller on the bottom. The hanging pressing block 33 rotates upward with the pin shaft 35 as the center line. When the hanging pressing block 33 rotates clockwise upward by about 60°, the pressure of the slow rebound component 34 is pressed. The cap 40 drives the telescopic sleeve 38 to compress the spring 39, and the telescopic sleeve 38 moves inward along the fixed shaft 37, and the length of the slow rebound component 34 retracts until the hanging pressing block 33 contacts the cylindrical surface 49 at the lower end of the inner circle of the clutch lifting tube 45, and the hanging pressing block 33 rotates 90° clockwise (the length direction of the hanging pressing block 33 remains vertical, and at this time, the maximum diameter of the circumference surrounded by all the hanging pressing blocks 33 is smaller than the diameter of the lifting ring 47 at the upper end of the clutch lifting tube 45). At this time, the hydraulic cylinder 16 immediately changes direction and extends rapidly. Due to the sliding friction fit between the outer circle of the high temperature resistant friction washer 41 and the inner circle of the telescopic sleeve 38, the telescopic sleeve 38 rebounds slowly. The hydraulic cylinder 16 drives the hanger 8, the high temperature resistant camera 9 and the hanging pressing block 33 to disengage the clutch hoisting cylinder 45 upward, and then starts the cylinder 52 to drive the two-station movable frame to move along the horizontal track 51 away from the furnace cover 1. Then the hydraulic cylinder 16 changes direction and contracts, and the guide column 21 moves downward along the middle spiral groove 19. When the guide column 21 moves to the intersection of the lower end of the middle spiral groove 19 and the upper end of the lower vertical groove 18, the center line of the hollow camera rod 31 of the high temperature resistant camera 9, the center line of the first outer cylinder 26 and the perspective hole 4 coincide, the hydraulic cylinder 16 continues to shrink, the guide column 21 moves downward along the lower vertical groove 18, when the guide column 21 moves to the lower end of the lower vertical groove 18, the hollow camera rod 31 of the high temperature resistant camera 9 also just passes through the perspective hole 4 and extends into the furnace body 55, and the hydraulic cylinder 16 is closed. The high temperature resistant camera 9 observes the combustion condition in the furnace body 55, and cold water is passed into the first water cooling sleeve assembly 7 to continuously cool the high temperature resistant camera 9 to ensure that the high temperature resistant camera 9 works in a relatively stable state. The high temperature resistant camera 9 transmits the collected video signal to the control room, and the burning condition of the garbage in the furnace body 55 can be seen according to the combustion image, and the feed amount and burner power can be adjusted in real time to make the garbage burn more fully and more energy-saving.

[0043] After the high-temperature camera has been observing for a period of time, the hydraulic cylinder 16 is started, the hydraulic cylinder 16 is extended, the outer cylinder rod 13 moves upward, and the guide column 21 moves upward along the slide groove from bottom to top in sequence until the guide column 21 moves into the upper vertical groove 20. The hydraulic cylinder 16 stops and the cylinder 52 is started to drive the two-station movable frame 50 to move along the horizontal track 51 toward the direction close to the furnace cover 1 to the predetermined position (the clutch lifting cylinder 45 and the hollow camera rod 31 of the high-temperature resistant camera 9 are on the same center line). At this time, the hollow camera rod 31 is located directly above the clutch lifting cylinder 45.

[0044] The hydraulic cylinder 16 is restarted, the hydraulic cylinder 16 contracts, the guide column 21 moves downward in the upper vertical groove 20, and the outer cylinder rod 13 moves downward with the hanger 8 and the high temperature resistant camera 9. The several press-type clutch hanging mechanisms 10 at the lower end outer circle of the hollow camera rod 31 at the lower end of the high temperature resistant camera 9 contact the clutch hanging cylinder 45 at the upper end of the blocking column 5, and the hanging pressing block 33 is blocked by the lifting ring 47. The hanging pressing block 33 rotates upward with the pin shaft 35 as the center line. When the hanging pressing block 33 rotates clockwise about 60° upward, it presses the pressure cap 40 of the slow rebound component 34. The pressure cap 40 drives the telescopic sleeve 38 to compress the spring 39. The telescopic sleeve 38 moves inward along the fixed axis 37, and the length of the slow rebound component 34 shrinks. After the clockwise rotation is 90°, all the hanging pressing blocks 33 can pass downward through the lifting ring 47 and enter the clutch lifting tube 45. At this time, the hydraulic cylinder 16 is suspended; under the elastic force of the spring 39, the outer end of the spring 39 drives the pressing cap 40, and the pressing cap 40 drives the telescopic sleeve 38 to move outward along the fixed shaft 37. Due to the sliding friction fit between the outer circle of the high-temperature resistant friction washer 41 and the inner circle of the telescopic sleeve 38, the telescopic sleeve 38 rebounds slowly, and the pressing cap 40 drives the hanging pressing block 33 to rotate counterclockwise around the pin shaft 35. At the same time, under the action of its own gravity, the pressing cap 40 rotates the hanging pressing block 33 to a horizontal state, and the limit block 36 integrated on the lower side of the inner end of the hanging pressing block 33 contacts the ear plate 32, limiting that the hanging pressing block 33 can no longer continue to rotate downward; Then the hydraulic cylinder 16 is started, and the hydraulic cylinder 16 continues to retract, the guide column 21 enters the middle spiral groove 19, and the lower end of the hollow camera rod 31 drives the clutch hoisting cylinder 45 to move along the flat plate 53 on the top of the two-station movable frame 50. At the same time, a plurality of hanging pressing blocks 33 also contact the lifting ring 47. After the clutch hoisting cylinder 45 leaves the U-shaped hole 54 on the flat plate 53, a plurality of hanging pressing blocks 33 lift the clutch hoisting cylinder 45 and the blocking column 5 through the lifting ring 47 and continue to rotate downward until the guide When the column 21 moves to the upper end of the lower vertical groove 18, the center lines of the hollow camera rod 31, the blocking column 5, the first outer cylinder 26 and the perspective hole 4 coincide, the hydraulic cylinder 16 continues to contract, and the guide column 21 moves downward along the lower vertical groove 18 until the blocking column 5 enters the perspective hole 4 to block the perspective hole 4. The hydraulic cylinder 16 slowly moves downward, and the hanging pressing block 33 of the outer circle of the lower end of the hollow camera rod 31 contacts the conical surface 48 of the inner circle of the clutch hoisting tube 45, which is larger at the top and smaller at the bottom. The hanging pressing block 33 is centered on the pin 35. The center line rotates upward, and the hanging pressing block 33 rotates clockwise about 60° upward to press the pressure cap 40 of the slow rebound component 34. The pressure cap 40 drives the telescopic sleeve 38 to compress the spring 39. The telescopic sleeve 38 moves inward along the fixed axis 37, and the length of the slow rebound component 34 retracts until the hanging pressing block 33 contacts the cylindrical surface 49 at the lower end of the inner circle of the clutch hanging tube 45. The hanging pressing block 33 rotates clockwise 90° (the length direction of the hanging pressing block 33 remains vertical. At this time, all the hanging pressing blocks 34 are in a state of being pressed vertically. 3, the maximum diameter of the enclosed circle is smaller than the diameter of the lifting ring 47 of the upper end of the clutch hoisting tube 45), the lower end of the hollow camera rod 31 presses the upper end surface of the blocking column 5, so that the outer circle of the blocking column 5 and the perspective hole 4 are tightly sealed, and then the hydraulic cylinder 16 immediately changes direction and extends rapidly. Due to the sliding friction fit between the outer circle of the high-temperature friction washer 41 and the inner circle of the telescopic sleeve 38, the rebound speed of the telescopic sleeve 38 is slow, and the hydraulic cylinder 16 drives the hanger 8, the high-temperature camera 9 and the hanging pressing block 33 to disengage from the clutch hoisting tube 45 upward. From then on, a cycle operation of observing the internal combustion condition of the furnace body 55 is completed. The high-temperature camera 9 can be lifted to the outside above the first water-cooling sleeve assembly 7, and the first water-cooling sleeve assembly 7 also stops water cooling.

[0045] The ignition electrode, high temperature resistant camera 9 and plasma igniter 70 (plasma igniter 70) in the present invention are all prior art, which can be purchased on the market, and their working principles are also conventional. Plasma igniter 7014 is an important part of plasma ignition technology, and its main working principle is: under certain output current conditions, when the cathode moves forward and contacts the anode, the system is in a short circuit state; when the cathode slowly leaves the anode, an arc is generated, and the arc is pulled out of the nozzle under the action of the coil magnetic field, and the compressed air is ionized into high temperature plasma under the action of the arc; the plasma forms a local high temperature fire core with a core temperature of >5000℃ and a large gradient in the ignition burner. When the combustion material passes through the plasma fire core, the volatile components in the combustion material are precipitated in a very short time, and the combustion material burns rapidly.

[0046] The above embodiments illustrate the basic principles and features of the present invention, but the above only illustrates the preferred embodiments of the present invention and is not limited to the embodiments. Under the inspiration of this patent, a person skilled in the art can make many forms of deformation and improvement without departing from the scope of protection of the present invention and the claims, which are all within the protection scope of the present invention. Therefore, the patent and protection scope of the present invention shall be subject to the attached claims.

Claims

1. A high-efficiency, energy-saving and environmentally friendly electric furnace, comprising a furnace body and a furnace cover arranged on the top of the furnace body, characterized in that: The furnace body is provided with a plurality of plasma combustion devices and intermittent monitoring devices in the furnace, and all the plasma combustion devices and intermittent monitoring devices in the furnace are evenly arranged along the circumferential direction of the furnace cover; The intermittent monitoring device in the furnace includes a fixed seat and a heat-insulating seat. The fixed seat is arranged on the outer side or the top of the furnace cover, and the heat-insulating seat is arranged on the top of the furnace cover. The fixed seat is provided with a rotating and lifting integrated mechanism. The heat-insulating seat and the furnace cover are provided with corresponding upward and downward transparent perspective holes, and a blocking column is arranged in the perspective hole. The heat-insulating seat is provided with a first water-cooling sleeve assembly, and the upper port of the perspective hole is located inside the first water-cooling sleeve assembly. The rotating and lifting integrated mechanism is connected with a hanger, and a high-temperature resistant camera is connected to the hanger. The lower end of the high-temperature resistant camera is provided with a press-type clutch hanging mechanism that cooperates with the upper end of the blocking column.

2. The high-efficiency, energy-saving and environmentally friendly electric furnace according to claim 1, characterized in that: The rotating and lifting integrated mechanism includes an inner cylinder rod perpendicular to the upper surface of the furnace cover, the lower end of the inner cylinder rod is arranged on a fixed seat through a bottom plate, the outer cylinder rod is slidably connected to the outside of the inner cylinder rod, the upper end of the outer cylinder rod is fixedly provided with a cover plate, a support rod located inside the inner cylinder rod on the bottom plate, a hydraulic cylinder is hinged on the upper end of the support rod, the upper end of the hydraulic cylinder is connected to the bottom surface of the cover plate by a hinge, a slideway groove is opened on the cylinder rod wall of the inner cylinder rod, the slideway groove includes a lower vertical groove, a middle spiral groove and an upper vertical groove, the length directions of the lower vertical groove and the upper vertical groove are parallel to the center line of the inner cylinder rod, the lower end and the upper end of the middle spiral groove are respectively connected to the upper end of the lower vertical groove and the lower end of the upper vertical groove, and a guide column moving along the slideway groove is fixedly provided on the outer cylinder rod; The hanger includes a boom and a rod. The boom is perpendicular to the outer tube rod. One end of the boom is fixedly connected to the upper side of the outer tube rod. The upper end of the rod is vertically fixedly connected to the lower part of the other end of the boom. The lower end of the rod is fixedly connected to the upper end of the high-temperature resistant camera.

3. The high-efficiency, energy-saving and environmentally friendly electric furnace according to claim 1, characterized in that: The heat-insulating seat comprises an outer shell and a refractory material arranged in the outer shell. One side of the outer shell is connected to the furnace cover by a hinge, and the outer shell is fixedly connected to the furnace cover by connecting bolts around the outer shell. The first water-cooling sleeve assembly comprises a first outer cylinder, a first heat insulation board is arranged at the lower end of the first outer cylinder, a first annular positioning sleeve is arranged at the top of the outer shell, the lower end of the first outer cylinder is interference-fitted in the first positioning sleeve, the bottom surface of the first heat insulation board contacts the top surface of the outer shell, and a first spiral water-cooling pipe is arranged in the inner circle of the first outer cylinder along the circumferential direction; a first cold water inlet pipe passing through the lower part of the first outer cylinder is arranged at the lower end of the first water-cooling pipe, and a first water outlet pipe passing through the upper part of the first outer cylinder is arranged at the upper end of the first water-cooling pipe; The high temperature resistant camera comprises a camera body, the lower end of which is fixedly connected with a hollow camera rod, the lower end of which is provided with a high temperature resistant lens; the high temperature resistant camera is coaxially installed in a spiral first water cooling tube, and the lower end of the hollow camera rod extends into the perspective hole.

4. The high-efficiency, energy-saving and environment-friendly electric furnace according to claim 3, characterized in that: At least three push-type clutch hanging mechanisms are evenly arranged along the outer circle of the lower end of the hollow camera rod, and each push-type clutch mechanism includes an ear plate, a hanging pressing block and a slow rebound component. The inner end of the ear plate is fixedly connected to the hollow camera rod, and the inner end of the hanging pressing block is rotatably connected to the outer end of the ear plate through a pin shaft. A limit block crimped with the bottom of the ear plate is integrally provided on the lower side of the inner end of the hanging pressing block; when the limit block contacts the bottom of the ear plate, the length direction of the hanging pressing block is in a horizontal state; the slow rebound component is arranged on the outer circle of the hollow camera rod just above the ear plate, and the telescopic direction of the slow rebound component is arranged along the radial direction of the hollow camera rod. When the hanging pressing block rotates upward with the pin shaft as the center, it presses the outer end of the slow rebound component to cause the slow rebound component to contract radially.

5. The high-efficiency, energy-saving and environment-friendly electric furnace according to claim 4, characterized in that: The slow rebound component includes a fixed shaft, a telescopic sleeve, a spring, a pressure cap and a high-temperature resistant friction washer. The outer circle of the hollow camera rod is radially provided with a groove and a threaded hole arranged along the bottom of the groove. The inner end of the fixed shaft extends into and is threadedly connected to the threaded hole. The telescopic sleeve is coaxially sleeved on the fixed shaft. There is an annular gap between the inner circle of the telescopic sleeve and the outer circle of the fixed seat. The inner circle of the pressure cap is threadedly connected to the outer end of the telescopic sleeve. The spring is sleeved on the outside of the fixed shaft and the telescopic sleeve. The two ends of the spring are respectively crimped with the pressure cap and the bottom surface of the groove. The high-temperature resistant friction washer is sleeved on the fixed shaft. The outer circle of the high-temperature resistant friction washer is slidably friction-matched with the inner circle of the telescopic sleeve.

6. The high-efficiency, energy-saving and environment-friendly electric furnace according to claim 5, characterized in that: An outer limit ring is integrally provided at the outer end of the fixed shaft, and an inner limit ring is integrally provided at the inner end of the telescopic sleeve. The outer diameter of the outer limit ring is larger than the outer diameter of the fixed shaft and smaller than the inner diameter of the telescopic sleeve, and the inner diameter of the inner limit ring is larger than the outer diameter of the fixed shaft and smaller than the inner diameter of the telescopic sleeve.

7. A high-efficiency, energy-saving and environment-friendly electric furnace according to any one of claims 4 to 6, characterized in that: The blocking column is a cone structure with a thick top and a thin bottom. The upper end of the blocking column is integrally provided with a clutch lifting cylinder with the same center line. The lower part of the outer circle of the clutch lifting cylinder is provided with an annular groove. The upper end of the clutch lifting cylinder is integrally provided with a lifting ring. The inner circle of the clutch lifting cylinder is provided with a conical surface with a larger top and a smaller bottom below the lifting ring. The inner circle of the clutch lifting cylinder is provided with a cylindrical surface below the conical surface. The inner diameter of the cylindrical surface, the diameter of the end below the conical surface and the inner diameter of the lifting ring are equal. When the length direction of the hanging and pressing blocks outside the hollow camera rod is in a horizontal state, the diameter of the circle formed by the outermost connecting lines of all the hanging and pressing blocks is larger than the inner diameter of the lifting ring and smaller than the uppermost diameter of the conical surface; When the length direction of the hanging pressing block outside the hollow camera rod is in a vertical state, the diameter of the circle formed by the outermost connecting lines of all the hanging pressing blocks is smaller than the inner diameter of the lifting ring.

8. The high-efficiency, energy-saving and environment-friendly electric furnace according to claim 1, characterized in that: The furnace cover includes a central disc portion and six sector-shaped portions, each of which has a central angle of 60°. The six sector-shaped portions are evenly arranged along the outer circle of the disc portion. An electrode hole is provided in the center of the disc portion, and an ignition electrode extending into the furnace body is inserted into the electrode hole. There are four plasma combustion devices and two intermittent monitoring devices in the furnace. The four plasma combustion devices and the two intermittent monitoring devices in the furnace are respectively arranged on one sector-shaped portion, and the two intermittent monitoring devices in the furnace are symmetrically arranged about the center line of the electrode hole. A feed port and a smoke exhaust port are respectively provided on two adjacent sector-shaped portions.

9. The high-efficiency, energy-saving and environment-friendly electric furnace according to claim 8, characterized in that: The plasma combustion device includes a hinge support fixed on the top of the furnace cover, a mounting shell is rotatably connected to the hinge support, the interior of the mounting shell is filled with refractory bricks, a fixing plate is provided at the bottom around the mounting shell, the fixing plate is connected to the furnace cover through mounting bolts, a second water-cooling sleeve assembly is provided on the top of the mounting shell, and combustion-supporting holes that are transparent from top to bottom are correspondingly opened on the mounting shell, the refractory bricks and the furnace cover, the upper port of the combustion-supporting hole is connected to the interior of the second water-cooling sleeve assembly, and a plasma igniter is provided inside the second water-cooling sleeve assembly.

10. The high-efficiency, energy-saving and environment-friendly electric furnace according to claim 9, characterized in that: The second water-cooling sleeve assembly includes a second outer cylinder, a second heat insulation plate that fits the top surface of the mounting shell is provided at the lower end of the second outer cylinder, a through hole corresponding to the combustion-supporting hole is opened on the second heat insulation plate, an annular second positioning sleeve is provided on the top of the mounting shell, the lower end of the second outer cylinder is interference fitted in the second positioning sleeve, a spiral second water-cooling pipe is provided on the inner circle of the second outer cylinder along the circumferential direction, a cylinder cover is provided on the upper port of the second outer cylinder, a second cold water inlet pipe that passes through the second outer cylinder is provided at the lower end of the second water-cooling pipe, a second water outlet pipe that passes through the cylinder cover is provided at the upper end of the second water-cooling pipe, and a plasma igniter is coaxially installed in the spiral second water-cooling pipe, and a nozzle at the lower end of the plasma igniter extends into the combustion-supporting hole.

Images