Automatic intermittent observation method for internal combustion condition of electric furnace

Abstract

The invention discloses an automatic intermittent observation method for the internal combustion condition of an electric furnace, a heat insulation water cooling device is arranged on a furnace cover of the electric furnace, vertically through perspective holes are correspondingly formed in the furnace cover and the heat insulation water cooling device, during normal operation, the perspective holes are blocked by blocking columns, and when the internal combustion condition of the furnace body needs to be observed, the perspective holes are blocked by blocking columns. The rotating and lifting integrated mechanism is adopted to automatically take out the blocking column upwards and place the blocking column to a designated place, then the high-temperature-resistant camera conducts observation operation through the perspective hole, after observation is completed, the blocking column is taken back to block the perspective hole, and the set of circulating operation procedures are all automatically operated, so that convenience, rapidness, safety and reliability are achieved; and intermittent monitoring of the combustion condition in the electric furnace can be achieved, and the high-temperature-resistant camera is prevented from being damaged in a high-temperature environment for a long time.

Description

Technical Field

[0001] The invention belongs to the technical field of electric furnaces, and in particular relates to an automatic intermittent observation method for the internal combustion condition of an electric furnace. Background Art

[0002] The garbage incineration furnace is a type of industrial furnace. At present, the internal monitoring of the furnace is usually carried out by monitoring parameters such as temperature, pressure, and humidity. It is rare to conduct multi-point video monitoring of the internal combustion of the furnace to see whether the garbage in the furnace is in a molten state. If the internal combustion of the garbage in the furnace is observed at regular intervals, 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 save more energy. Therefore, it is urgent to improve the existing electric furnace. Summary of the invention

[0003] In order to solve the above technical problems existing in the prior art, the present invention provides an automated intermittent observation method for the internal combustion condition of an electric furnace which has a scientific principle, a high degree of automation, and is safe and reliable.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solution: an automatic intermittent observation method of the internal combustion condition of an electric furnace comprises the following steps: (1) An insulated water cooling device is installed on the furnace cover of the electric furnace. The furnace cover and the insulated water cooling device are provided with corresponding vertically transparent holes. When the electric furnace is in normal operation, a high temperature resistant blocking column is used to block the perspective holes; (2) A fixed seat is arranged on the outer side or the top of the furnace cover, and a rotating lifting integrated mechanism is arranged on the fixed seat. The rotating lifting integrated mechanism is connected to a high temperature resistant camera through a hanger, and a pressing clutch hanging mechanism cooperating with the upper end of the blocking column is arranged at the lower end of the high temperature resistant camera; (3) When it is necessary to observe the combustion condition inside the electric furnace, start the rotating lifting mechanism, and take out the blocking column from the perspective hole through the push-type clutch hanging mechanism at the lower end of the high-temperature resistant camera and place it on the movable bracket device; (4) Operate the rotating lifting mechanism to separate the lower end of the high temperature resistant camera from the upper end of the blocking column, then extend the high temperature resistant camera into the insulated water cooling device and observe the combustion conditions inside the electric furnace through the perspective hole; (5) After the high temperature resistant camera has been observing for a period of time, the rotating lifting mechanism lifts the high temperature resistant camera out of the insulated water cooling device and moves it to the top of the movable bracket device; (6) The rotating and lifting integrated mechanism removes the blocking column from the movable bracket device through the push-type clutch hanging mechanism at the lower end of the high-temperature resistant camera and places it into the perspective hole to block the perspective hole.

[0005] 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.

[0006] The insulated water cooling device comprises an insulating seat and a water cooling sleeve assembly arranged on the insulating seat; 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 bolts around the outer shell; The water-cooling sleeve assembly includes an outer cylinder, a heat insulation plate is provided at the lower end of the outer cylinder, an annular positioning sleeve is provided at the top of the outer shell, the lower end of the outer cylinder is interference-fitted in the positioning sleeve, the bottom surface of the heat insulation plate contacts the top surface of the outer shell, and a spiral water-cooling pipe is provided along the circumferential direction of the inner circle of the outer cylinder; The high temperature resistant camera comprises a camera body, the lower end of which is fixedly connected with a hollow camera rod, and the lower end of which is provided with a high temperature resistant lens.

[0007] 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 arranged 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 make the slow rebound component radially contract; 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. An annular gap is provided 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 press-connected 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. 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.

[0008] 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; The movable bracket device includes a horizontal track and a two-station movable frame. The bottom of the two-station movable frame is slidably arranged on the horizontal track. The two-station movable frame is connected to a cylinder for driving the two-station movable frame to slide along the horizontal track. A flat plate is provided on the top of the two-station movable frame. A U-shaped hole that is transparent from top to bottom is provided on the side of the flat plate facing the furnace cover. The width of the U-shaped hole is equal to the bottom diameter of the annular groove.

[0009] The specific process of step (3) is as follows: the hydraulic cylinder of the rotating lifting mechanism is started, the hydraulic cylinder retracts, and drives the outer cylinder rod, the hanger and the high temperature resistant camera to move downward at the same time, the guide column moves downward in the slide groove, and when it moves down to the middle spiral groove, the guide column drives the outer cylinder rod to rotate around the inner cylinder rod while moving downward, and when the guide column moves down to the lower vertical groove, the high temperature resistant camera is just above the water cooling sleeve assembly and coincides with the center line of the outer cylinder body, the hydraulic cylinder continues to retract, the guide column moves straight down along the lower vertical groove, the outer cylinder rod moves straight down with the hanger and the high temperature resistant camera, and the hollow camera at the lower end of the high temperature resistant camera Several push-type clutch hanging mechanisms on the outer circle of the lower end of the pole contact the clutch lifting cylinder at the upper end of the blocking column, and the hanging pressing block is blocked by the lifting ring. The hanging pressing block rotates upward with the pin shaft as the center line. When the hanging pressing block rotates upward clockwise about 60°, it presses the pressure cap of the slow rebound component, and the pressure cap drives the telescopic sleeve to compress the spring. The telescopic sleeve moves inward along the fixed axis, and the length of the slow rebound component shrinks. After the hanging pressing block rotates clockwise 90°, all the hanging pressing blocks can pass through the lifting ring downward until the hanging pressing block moves down to the conical surface of the clutch lifting cylinder, and the hydraulic cylinder stops under the action of the spring elastic force. The outer end of the spring drives the pressure cap, and the pressure cap drives the telescopic sleeve to move outward along the fixed axis. Due to the sliding friction between the outer circle of the high-temperature resistant friction washer and the inner circle of the telescopic sleeve, the telescopic sleeve rebounds slowly. The pressure cap drives the hanging pressing block to rotate counterclockwise around the pin shaft. At the same time, under the action of its own gravity, the hanging pressing block turns to a horizontal state, and the integrated limit block on the lower side of the inner end of the hanging pressing block contacts the ear plate, limiting the hanging pressing block from continuing to rotate downward. Then the hydraulic cylinder starts, and the hydraulic cylinder extends, driving the outer tube rod, the hanger, the high-temperature resistant camera and the push-type clutch hanging mechanism to lift upward at the same time, and several hanging pressing blocks At the same time, it contacts the lifting ring, and the clutch lifting cylinder and the blocking column are lifted by the lifting ring, so that the blocking column is taken out from the perspective hole; when the guide column moves upward to the upper end along the lower vertical groove, the lower end of the blocking column rises to above the upper port of the water-cooling sleeve assembly, and the guide column moves up into the middle spiral groove, and the outer cylinder rod rotates while moving upward along the inner cylinder rod, thereby driving the hanger, the high-temperature resistant camera and the blocking column from above the furnace cover to the two-station movable frame outside the furnace cover, and when the guide column moves up to the lower end of the upper vertical groove, the clutch lifting cylinder at the upper end of the blocking column rotates into the U-shaped hole, and the edges on both sides of the U-shaped hole are inserted into the annular grooves.

[0010] The specific process of step (4) is as follows: the hydraulic cylinder contracts, and the hydraulic cylinder drives the hanger and the high-temperature resistant camera to move downward. At this time, the blocking column is fixed on the two-station movable frame, and the hanging pressing block on the outer circle of the lower end of the high-temperature resistant camera also moves downward. The hanging pressing block contacts the conical surface of the inner circle of the clutch lifting cylinder, which is larger at the top and smaller at the bottom. The hanging pressing block rotates upward with the pin as the center line. When the hanging pressing block rotates upward clockwise by about 60°, it presses the pressure cap of the slow rebound component, and the pressure cap drives the telescopic sleeve to compress the spring, and the telescopic sleeve moves inward along the fixed axis. The length of the component retracts slowly until the hanging pressing block contacts the cylindrical surface at the bottom of the inner circle of the clutch lifting cylinder. The hanging pressing block rotates 90° clockwise, and the length direction of the hanging pressing block remains vertical. At this time, the maximum diameter of the circle surrounded by all hanging pressing blocks is smaller than the diameter of the lifting ring at the upper port of the clutch lifting cylinder). At this time, the hydraulic cylinder immediately changes direction and extends rapidly. Due to the sliding friction between the outer circle of the high-temperature resistant friction washer and the inner circle of the telescopic sleeve, the telescopic sleeve rebounds slowly, and the hydraulic cylinder drives the hanger and the high-temperature resistant camera to move. The head and the hanging pressing block are disengaged from the clutch lifting cylinder upward, and then the cylinder is started to drive the two-station movable frame to move along the horizontal track away from the furnace cover, and then the hydraulic cylinder is reversed and contracted, and the guide column moves downward along the middle spiral groove. When the guide column moves to the intersection of the lower end of the middle spiral groove and the upper end of the lower vertical groove, the center line of the hollow camera rod of the high-temperature resistant camera, the center line of the outer cylinder and the perspective hole coincide, and the hydraulic cylinder continues to contract, and the guide column moves downward along the lower vertical groove. When the guide column moves to the lower end of the lower vertical groove, the hollow camera rod of the high-temperature resistant camera also passes through the perspective hole and extends into the furnace body, and the hydraulic cylinder is closed; the high-temperature resistant camera observes the combustion condition in the furnace body, and cold water is introduced into the water-cooling sleeve assembly to continuously cool the high-temperature resistant camera to ensure that the high-temperature resistant camera works in a relatively stable state. The high-temperature resistant camera transmits the collected video signal to the control room. The combustion condition of the garbage in the furnace body 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-efficient.

[0011] The specific process of step (5) is as follows: after the high-temperature camera observes for a period of time, the hydraulic cylinder is started, the hydraulic cylinder is extended, the outer cylinder rod moves upward, and the guide column moves upward along the slide groove from bottom to top in sequence until the guide column moves into the upper vertical groove, the hydraulic cylinder stops, and the cylinder is started to drive the two-station movable frame to move along the horizontal track toward the direction close to the furnace cover 1 to the predetermined position. At this time, the clutch lifting cylinder and the hollow camera rod of the high-temperature camera are on the same center line, and the hollow camera rod is located directly above the clutch lifting cylinder.

[0012] The specific process of step (6) is as follows: the hydraulic cylinder restarts and contracts, the guide column moves downward in the upper vertical groove, the outer tube rod moves straight downward with the hanger and the high-temperature resistant camera, and the plurality of press-type clutch hanging mechanisms on the outer circle of the lower end of the hollow camera rod at the lower end of the high-temperature resistant camera contact the clutch hanging tube at the upper end of the blocking column, the hanging pressing block is blocked by the lifting ring, and the hanging pressing block rotates upward with the pin shaft as the center line. When the hanging pressing block rotates clockwise about 60° upward, it presses the pressure cap of the slow rebound component, and the pressure cap drives the telescopic sleeve to compress the spring, and the telescopic sleeve moves inward along the fixed axis, and the length of the slow rebound component shrinks, and the hanging pressing block rotates clockwise about 60°. After the block rotates 90° clockwise, all the hanging pressing blocks can pass downward through the lifting ring and enter the clutch lifting cylinder. At this time, the hydraulic cylinder is suspended; under the action of the spring elastic force, the outer end of the spring drives the pressing cap, and the pressing cap drives the telescopic sleeve to move outward along the fixed axis. Due to the sliding friction between the outer circle of the high-temperature resistant friction washer and the inner circle of the telescopic sleeve, the telescopic sleeve rebounds slowly, and the pressing cap drives the hanging pressing block to rotate counterclockwise around the pin shaft. At the same time, under the action of its own gravity, the pressing cap turns the hanging pressing block to a horizontal state, and the integrated limit block on the lower side of the inner end of the hanging pressing block contacts the ear plate, limiting the hanging pressing block from continuing to rotate downward; After the guide column moves to the upper end of the lower vertical groove, the center lines of the hollow camera rod, the blocking column, the outer cylinder and the perspective hole coincide, and the hydraulic cylinder continues to contract, and the guide column moves downward along the lower vertical groove until the blocking column enters the perspective hole to block the perspective hole. Then the hydraulic cylinder moves down slowly, and the hanging pressing block on the outer circle of the lower end of the hollow camera rod contacts the conical surface of the inner circle of the clutch lifting cylinder with a larger upper part and a smaller lower part. The hanging pressing block rotates upward with the pin as the center line, and when the hanging pressing block rotates clockwise about 60° upward, the top pressure slowly rebounds. The pressure cap drives the telescopic sleeve to compress the spring, and the telescopic sleeve moves inward along the fixed axis, and the length of the rebound assembly slowly shrinks until the hanging pressure block contacts the cylindrical surface at the lower end of the inner circle of the clutch lifting tube. The hanging pressure block rotates 90° clockwise, and the length direction of the hanging pressure block remains vertical. At this time, the maximum diameter of the circumference enclosed by all the hanging pressure blocks is smaller than the diameter of the lifting ring at the upper port of the clutch lifting tube. The lower end of the hollow camera rod presses the upper end face of the blocking column to seal the outer circle of the blocking column tightly with the perspective hole, and then the hydraulic cylinder immediately reverses and extends rapidly. Due to the sliding friction between the outer circle of the high-temperature resistant friction washer and the inner circle of the telescopic sleeve, the rebound speed of the telescopic sleeve 38 is slow, and the hydraulic cylinder drives the hanger, the high-temperature resistant camera and the hanging pressure block to separate from the clutch lifting tube upward; thus completing a cycle operation of observing the combustion condition inside the furnace body; lifting the high-temperature resistant camera to the outside above the water-cooling sleeve assembly, and the water-cooling sleeve assembly also suspends water cooling.

[0013] 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 resistant camera. The water cooling sleeve assembly surrounds the camera body of the high temperature resistant camera and cools the camera body by water cooling, which is the second barrier to protect the normal operation of the high temperature resistant camera.

[0014] 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.

[0015] 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.

[0016] 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.

[0017] To sum up, 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 and lifting integrated mechanism is used to automatically take out the blocking column and place the blocking column in a designated place. 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 is all automated, which is convenient, fast, safe and reliable. It can realize intermittent monitoring of the combustion condition inside the electric furnace and prevent the high-temperature resistant camera from being damaged in a high-temperature environment for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the rotating lifting integrated mechanism, the insulating water cooling device, the movable support device and the furnace cover in the present invention; Figure 2 yes Figure 1 A top view of 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 1. It is a schematic diagram of the working state of the rotating and lifting integrated mechanism when the blocking column is located above the 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. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings and examples.

[0020] Figure 1-Figure 14 As shown, the automatic intermittent observation method of the internal combustion condition of the electric furnace of the present invention comprises the following steps: (1) An insulating water cooling device is provided on the furnace cover 1 of the electric furnace, and a transparent hole 4 which is transparent from top to bottom is opened on the furnace cover 1 and the insulating water cooling device. When the electric furnace is in normal operation, a high temperature resistant blocking column 5 is used to block the transparent hole 4; (2) A fixed seat 2 is provided on the outer side or the top of the furnace cover 1, and a rotating lifting integrated mechanism 6 is provided on the fixed seat 2. The rotating lifting integrated mechanism 6 is connected to a high temperature resistant camera 9 through a hanger 8, and a pressing clutch hanging mechanism 10 is provided at the lower end of the high temperature resistant camera 9 to cooperate with the upper end of the blocking column 5; (3) When it is necessary to observe the combustion condition inside the electric furnace, the rotating lifting mechanism 6 is started, and the blocking column 5 is taken out from the perspective hole 4 and placed on the movable bracket device through the pressing clutch hanging mechanism 10 at the lower end of the high temperature resistant camera 9; (4) Operate the rotating lifting mechanism 6 to separate the lower end of the high temperature resistant camera 9 from the upper end of the blocking column 5, then extend the high temperature resistant camera 9 into the insulated water cooling device and observe the combustion condition inside the electric furnace through the perspective hole 4; (5) After the high temperature resistant camera 9 observes for a period of time, the rotating lifting mechanism 6 lifts the high temperature resistant camera 9 out of the insulated water cooling device and moves it to the top of the movable bracket device; (6) The rotating and lifting integrated mechanism 6 removes the blocking column 5 from the movable bracket device through the push-type clutch hanging mechanism 10 at the lower end of the high-temperature resistant camera 9 and places it into the perspective hole 4 to block the perspective hole 4.

[0021] The rotating and lifting integrated mechanism 6 includes an inner cylinder rod 11 which is 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. 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. A hydraulic cylinder 16 is hinged to 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 through a hinge. A slideway groove is opened on the cylinder rod wall of the inner cylinder rod 11. The slideway 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. The lower end and the 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. A guide column 21 moving along the slideway groove is fixed on the outer cylinder rod 13. 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.

[0022] The insulated water cooling device comprises an insulating seat and a water cooling sleeve assembly 7 arranged on the insulating seat 3; The heat-insulating seat 3 includes 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 through a hinge, and the shell 24 is fixedly connected to the furnace cover 1 through bolts around the periphery. The water-cooling sleeve assembly 7 includes an outer cylinder 26, a heat insulation plate 27 is provided at the lower end of the outer cylinder 26, an annular positioning sleeve 28 is provided at the top of the outer shell 24, the lower end of the outer cylinder 26 is interference-fitted in the positioning sleeve 28, the bottom surface of the heat insulation plate 27 contacts the top surface of the outer shell 24, and a spiral water cooling pipe 29 is provided along the circumferential direction of the inner circle of the outer cylinder 26; The high temperature resistant camera 9 comprises a camera body 30 , a hollow camera rod 31 is fixedly connected to the lower end of the camera body 30 , and a high temperature resistant lens is arranged at the lower end of the hollow camera rod 31 .

[0023] 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 make the slow rebound component 34 contract radially; 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 press-connected 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 friction-matched with the inner circle of the telescopic sleeve 38. 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.

[0024] 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; The movable support device includes a horizontal track and a two-station movable frame 50. The bottom of the two-station movable frame 50 is slidably arranged on the 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.

[0025] The specific process of step (3) is as follows: the hydraulic cylinder 16 of the rotating lifting mechanism 6 is started, the hydraulic cylinder 16 retracts, and drives the outer cylinder rod 13, the hanger 8 and the high temperature resistant camera 9 to move downward at the same time, and 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 located above the water cooling sleeve assembly 7 and coincides with the center line of the outer cylinder body 26. The hydraulic cylinder 16 continues to retract, and the guide column 21 moves straight down along the lower vertical groove 18. The outer cylinder rod 13 also moves straight down with the hanger 8 and the high temperature resistant camera 9. The lower end of the hollow camera rod 31 at the lower end of the high temperature resistant camera 9 Several press-type clutch hanging mechanisms 10 on the outer circle contact the clutch hanging tube 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 upward clockwise by about 60°, 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 hanging pressing block 33 rotates clockwise by 90°, all the hanging pressing blocks 33 can pass through the lifting ring 47 downward until the hanging pressing block 33 moves down to the conical surface 48 of the clutch hanging tube 45, and the hydraulic cylinder 16 stops. 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 35. At the same time, under the action of its own gravity, the pressing cap 40 turns 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 contacts the ear plate 32, limiting the hanging pressing block 33 from continuing to rotate downward. Then the hydraulic cylinder 16 is started, and the hydraulic cylinder 16 is extended, driving the outer tube rod 13, the hanger 8, the high temperature resistant camera 9 and the push-type clutch hanging mechanism 10 to lift upward at the same time, and several hanging pressing blocks 33 At the same time, it contacts the lifting ring 47, and the clutch lifting cylinder 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 to the uppermost end along the lower vertical groove 18, the lower end of the blocking column 5 rises to above the upper end of the water-cooling sleeve assembly 7, and the guide column 21 moves up to the middle spiral groove 19, and 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 from above the furnace cover 1 to the two-station movable frame 50 outside the furnace cover 1. When the guide column 21 moves up to the lower end of the upper vertical groove 20, the clutch lifting cylinder 45 at the upper end of the blocking column 5 is rotated 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.

[0026] The specific process of step (4) is as follows: the hydraulic cylinder 16 contracts, and the hydraulic cylinder 16 drives the hanger 8 and the high-temperature resistant camera 9 to move downward. 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 downward. The hanging pressing block 33 contacts the conical surface 48 of the inner circle of the clutch hoisting cylinder 45, and 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, and the telescopic sleeve 38 moves along The fixed shaft 37 moves inward, and the length of the slow rebound component 34 shrinks 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. The hanging pressing block 33 rotates 90° clockwise, and the length direction of the hanging pressing block 33 remains in a vertical state. 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 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 hydraulic cylinder 16 drives the hanging The frame 8, the high temperature resistant camera 9 and the hanging pressing block 33 are disengaged from the clutch hoisting cylinder 45 upwards, and then the cylinder 52 is started to drive the two-station movable frame 50 to move along the horizontal track 51 away from the furnace cover 1, and then the hydraulic cylinder 16 is reversed and retracted, 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 outer cylinder 26 and the center line of the perspective hole 4 coincide, and the hydraulic cylinder 16 continues to retract, and the guide column 21 moves downward along the lower vertical groove 18. When the high temperature resistant camera 9 moves to the lower end of the lower vertical slot 18, the hollow camera rod 31 of the high temperature resistant camera 9 also passes through the perspective hole 4 and extends into the furnace body, and the hydraulic cylinder 16 is closed; the high temperature resistant camera 9 observes the combustion condition in the furnace body, and cold water is introduced into the 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 combustion condition of the garbage in the furnace body 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.

[0027] The specific process of step (5) is as follows: after the high-temperature camera observes 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 to the predetermined station along the horizontal track 51 in the direction close to the furnace cover 11. At this time, the clutch hoisting cylinder 45 is coaxial with the hollow camera rod 31 of the high-temperature resistant camera 9. At this time, the hollow camera rod 31 is located directly above the clutch hoisting cylinder 45.

[0028] The specific process of step (6) is as follows: the hydraulic cylinder 16 starts to retract again, the guide column 21 moves downward in the upper vertical groove 20, the outer cylinder rod 13 moves downward 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 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 33 rotates 90° clockwise, 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 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 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 turns 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 number 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 number 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 column 21 moves to the upper end of the lower vertical groove 18 When the center lines of the hollow camera rod 31, the blocking column 5, the 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 hanging tube 45, which is larger at the top and smaller at 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 upward clockwise by about 60°, the top pressure is slowly released. The pressure cap 40 of the slow rebound component 34 drives the telescopic sleeve 38 to compress the spring 39, and 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, and the hanging pressing block 33 rotates 90° clockwise, and the length direction of the hanging pressing block 33 remains in a vertical state. 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 hanging tube 45, and the lower end of the hollow camera rod 31 is blocked by top pressure. The upper end surface of the column 5 is blocked, 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 resistant friction washer 41 and the inner circle of the telescopic sleeve 38, the telescopic sleeve 3838 rebounds slowly, and 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 tube 45 upward; thus, a cycle operation for observing the combustion condition inside the furnace body is completed; the high temperature resistant camera 9 is lifted to the outside above the water-cooling sleeve assembly 7, and the water-cooling of the water-cooling sleeve assembly 7 is also suspended.

[0029] 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. An automatic intermittent observation method for the internal combustion condition of an electric furnace, characterized in that: The following steps are involved: (1) An insulated water cooling device is installed on the furnace cover of the electric furnace. The furnace cover and the insulated water cooling device are provided with corresponding vertically transparent holes. When the electric furnace is in normal operation, a high temperature resistant blocking column is used to block the perspective holes; (2) A fixed seat is arranged on the outer side or the top of the furnace cover, and a rotating lifting integrated mechanism is arranged on the fixed seat. The rotating lifting integrated mechanism is connected to a high temperature resistant camera through a hanger, and a pressing clutch hanging mechanism cooperating with the upper end of the blocking column is arranged at the lower end of the high temperature resistant camera; (3) When it is necessary to observe the combustion conditions inside the electric furnace, start the rotating and lifting integrated mechanism, and take the blocking column out of the perspective hole through the push-type clutch hanging mechanism at the lower end of the high-temperature resistant camera and place it on the movable bracket device; (4) Operate the rotating lifting mechanism to separate the lower end of the high temperature resistant camera from the upper end of the blocking column, then extend the high temperature resistant camera into the insulated water cooling device and observe the combustion conditions inside the electric furnace through the perspective hole; (5) After the high temperature resistant camera has been observing for a period of time, the rotating lifting mechanism lifts the high temperature resistant camera out of the insulated water cooling device and moves it to the top of the movable bracket device; (6) The rotating and lifting integrated mechanism removes the blocking column from the movable bracket device through the push-type clutch hanging mechanism at the lower end of the high-temperature resistant camera and places it into the perspective hole to block the perspective hole.

2. The method for automatic intermittent observation of internal combustion conditions of an 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 method for automatic intermittent observation of internal combustion conditions of an electric furnace according to claim 2, characterized in that: The insulated water cooling device comprises an insulating seat and a water cooling sleeve assembly arranged on the insulating seat; 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 bolts around the outer shell; The water-cooling sleeve assembly includes an outer cylinder, a heat insulation plate is provided at the lower end of the outer cylinder, an annular positioning sleeve is provided at the top of the outer shell, the lower end of the outer cylinder is interference-fitted in the positioning sleeve, the bottom surface of the heat insulation plate contacts the top surface of the outer shell, and a spiral water-cooling pipe is provided along the circumferential direction of the inner circle of the outer cylinder; The high temperature resistant camera comprises a camera body, the lower end of which is fixedly connected with a hollow camera rod, and the lower end of which is provided with a high temperature resistant lens.

4. The method for automatic intermittent observation of internal combustion conditions of an 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 arranged 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 make the slow rebound component radially contract; 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. An annular gap is provided 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 press-connected 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. 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.

5. The method for automatic intermittent observation of internal combustion conditions of an electric furnace according to claim 4, 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.

6. The method for automatic intermittent observation of internal combustion conditions of an electric furnace according to claim 5, characterized in that: The movable bracket device includes a horizontal track and a two-station movable frame. The bottom of the two-station movable frame is slidably arranged on the horizontal track. The two-station movable frame is connected to a cylinder for driving the two-station movable frame to slide along the horizontal track. A flat plate is provided on the top of the two-station movable frame. A U-shaped hole that is transparent from top to bottom is provided on the side of the flat plate facing the furnace cover. The width of the U-shaped hole is equal to the bottom diameter of the annular groove.

7. The method for automatic intermittent observation of internal combustion conditions of an electric furnace according to claim 6, characterized in that: The specific process of step (3) is as follows: the hydraulic cylinder of the rotating lifting mechanism is started, the hydraulic cylinder retracts, and drives the outer cylinder rod, the hanger and the high temperature resistant camera to move downward at the same time, the guide column moves downward in the slide groove, and when it moves down to the middle spiral groove, the guide column drives the outer cylinder rod to rotate around the inner cylinder rod while moving downward, and when the guide column moves down to the lower vertical groove, the high temperature resistant camera is just above the water cooling sleeve assembly and coincides with the center line of the outer cylinder body, the hydraulic cylinder continues to retract, the guide column moves straight down along the lower vertical groove, the outer cylinder rod moves straight down with the hanger and the high temperature resistant camera, and the hollow camera at the lower end of the high temperature resistant camera Several push-type clutch hanging mechanisms on the outer circle of the lower end of the pole contact the clutch lifting cylinder at the upper end of the blocking column, and the hanging pressing block is blocked by the lifting ring. The hanging pressing block rotates upward with the pin shaft as the center line. When the hanging pressing block rotates upward clockwise about 60°, it presses the pressure cap of the slow rebound component, and the pressure cap drives the telescopic sleeve to compress the spring. The telescopic sleeve moves inward along the fixed axis, and the length of the slow rebound component shrinks. After the hanging pressing block rotates clockwise 90°, all the hanging pressing blocks can pass through the lifting ring downward until the hanging pressing block moves down to the conical surface of the clutch lifting cylinder, and the hydraulic cylinder stops under the action of the spring elastic force. The outer end of the spring drives the pressure cap, and the pressure cap drives the telescopic sleeve to move outward along the fixed axis. Due to the sliding friction between the outer circle of the high-temperature resistant friction washer and the inner circle of the telescopic sleeve, the telescopic sleeve rebounds slowly. The pressure cap drives the hanging pressing block to rotate counterclockwise around the pin shaft. At the same time, under the action of its own gravity, the hanging pressing block turns to a horizontal state, and the integrated limit block on the lower side of the inner end of the hanging pressing block contacts the ear plate, limiting the hanging pressing block from continuing to rotate downward. Then the hydraulic cylinder starts, and the hydraulic cylinder extends, driving the outer tube rod, the hanger, the high-temperature resistant camera and the push-type clutch hanging mechanism to lift upward at the same time, and several hanging pressing blocks At the same time, it contacts the lifting ring, and the clutch lifting cylinder and the blocking column are lifted by the lifting ring, so that the blocking column is taken out from the perspective hole; when the guide column moves upward to the upper end along the lower vertical groove, the lower end of the blocking column rises to above the upper port of the water-cooling sleeve assembly, and the guide column moves up into the middle spiral groove, and the outer cylinder rod rotates while moving upward along the inner cylinder rod, thereby driving the hanger, the high-temperature resistant camera and the blocking column from above the furnace cover to the two-station movable frame outside the furnace cover, and when the guide column moves up to the lower end of the upper vertical groove, the clutch lifting cylinder at the upper end of the blocking column rotates into the U-shaped hole, and the edges on both sides of the U-shaped hole are inserted into the annular grooves.

8. The method for automatic intermittent observation of internal combustion conditions of an electric furnace according to claim 7, characterized in that: The specific process of step (4) is as follows: the hydraulic cylinder contracts, and the hydraulic cylinder drives the hanger and the high-temperature resistant camera to move downward. At this time, the blocking column is fixed on the two-station movable frame, and the hanging pressing block on the outer circle of the lower end of the high-temperature resistant camera also moves downward. The hanging pressing block contacts the conical surface of the inner circle of the clutch lifting cylinder, which is larger at the top and smaller at the bottom. The hanging pressing block rotates upward with the pin as the center line. When the hanging pressing block rotates clockwise upward by about 60°, it presses the pressure cap of the slow rebound component, and the pressure cap drives the telescopic sleeve to compress the spring, and the telescopic sleeve moves inward along the fixed axis. The length of the component retracts slowly until the hanging pressing block contacts the cylindrical surface at the bottom of the inner circle of the clutch lifting cylinder. The hanging pressing block rotates 90° clockwise, and the length direction of the hanging pressing block remains vertical. At this time, the maximum diameter of the circle surrounded by all hanging pressing blocks is smaller than the diameter of the lifting ring at the upper port of the clutch lifting cylinder). At this time, the hydraulic cylinder immediately changes direction and extends rapidly. Due to the sliding friction between the outer circle of the high-temperature resistant friction washer and the inner circle of the telescopic sleeve, the telescopic sleeve rebounds slowly, and the hydraulic cylinder drives the hanger and the high-temperature resistant camera to move. The head and the hanging pressing block are disengaged from the clutch lifting cylinder upward, and then the cylinder is started to drive the two-station movable frame to move along the horizontal track away from the furnace cover, and then the hydraulic cylinder is reversed and contracted, and the guide column moves downward along the middle spiral groove. When the guide column moves to the intersection of the lower end of the middle spiral groove and the upper end of the lower vertical groove, the center line of the hollow camera rod of the high-temperature resistant camera, the center line of the outer cylinder and the perspective hole coincide, and the hydraulic cylinder continues to contract, and the guide column moves downward along the lower vertical groove. When the guide column moves to the lower end of the lower vertical groove, the hollow camera rod of the high-temperature resistant camera also passes through the perspective hole and extends into the furnace body, and the hydraulic cylinder is closed; the high-temperature resistant camera observes the combustion condition in the furnace body, and cold water is introduced into the water-cooling sleeve assembly to continuously cool the high-temperature resistant camera to ensure that the high-temperature resistant camera works in a relatively stable state. The high-temperature resistant camera transmits the collected video signal to the control room. The combustion condition of the garbage in the furnace body 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.

9. The method for automatic intermittent observation of internal combustion conditions of an electric furnace according to claim 8, characterized in that: The specific process of step (5) is as follows: after the high-temperature camera observes for a period of time, the hydraulic cylinder is started, the hydraulic cylinder is extended, the outer cylinder rod moves upward, and the guide column moves upward along the slide groove from bottom to top in sequence until the guide column moves into the upper vertical groove, the hydraulic cylinder stops, and the cylinder is started to drive the two-station movable frame to move along the horizontal track toward the direction close to the furnace cover 1 to the predetermined position. At this time, the clutch lifting cylinder and the hollow camera rod of the high-temperature camera are on the same center line, and the hollow camera rod is located directly above the clutch lifting cylinder.

10. The method for automatic intermittent observation of internal combustion conditions of an electric furnace according to claim 9, characterized in that: The specific process of step (6) is as follows: the hydraulic cylinder restarts and contracts, the guide column moves downward in the upper vertical groove, the outer tube rod moves straight downward with the hanger and the high-temperature resistant camera, and the plurality of press-type clutch hanging mechanisms on the outer circle of the lower end of the hollow camera rod at the lower end of the high-temperature resistant camera contact the clutch hanging tube at the upper end of the blocking column, the hanging pressing block is blocked by the lifting ring, and the hanging pressing block rotates upward with the pin shaft as the center line. When the hanging pressing block rotates clockwise about 60° upward, it presses the pressure cap of the slow rebound component, and the pressure cap drives the telescopic sleeve to compress the spring, and the telescopic sleeve moves inward along the fixed axis, and the length of the slow rebound component shrinks, and the hanging pressing block rotates clockwise about 60°. After the block rotates 90° clockwise, all the hanging pressing blocks can pass downward through the lifting ring and enter the clutch lifting cylinder. At this time, the hydraulic cylinder is suspended; under the action of the spring elastic force, the outer end of the spring drives the pressing cap, and the pressing cap drives the telescopic sleeve to move outward along the fixed axis. Due to the sliding friction between the outer circle of the high-temperature resistant friction washer and the inner circle of the telescopic sleeve, the telescopic sleeve rebounds slowly, and the pressing cap drives the hanging pressing block to rotate counterclockwise around the pin shaft. At the same time, under the action of its own gravity, the pressing cap turns the hanging pressing block to a horizontal state, and the integrated limit block on the lower side of the inner end of the hanging pressing block contacts the ear plate, limiting the hanging pressing block from continuing to rotate downward; After the guide column moves to the upper end of the lower vertical groove, the center lines of the hollow camera rod, the blocking column, the outer cylinder and the perspective hole coincide, and the hydraulic cylinder continues to contract, and the guide column moves downward along the lower vertical groove until the blocking column enters the perspective hole to block the perspective hole. Then the hydraulic cylinder moves down slowly, and the hanging pressing block on the outer circle of the lower end of the hollow camera rod contacts the conical surface of the inner circle of the clutch lifting cylinder with a larger upper part and a smaller lower part. The hanging pressing block rotates upward with the pin as the center line, and when the hanging pressing block rotates clockwise about 60° upward, the top pressure slowly rebounds. The pressure cap drives the telescopic sleeve to compress the spring, and the telescopic sleeve moves inward along the fixed axis, and the length of the rebound assembly slowly shrinks until the hanging pressure block contacts the cylindrical surface at the lower end of the inner circle of the clutch lifting tube. The hanging pressure block rotates 90° clockwise, and the length direction of the hanging pressure block remains vertical. At this time, the maximum diameter of the circumference enclosed by all the hanging pressure blocks is smaller than the diameter of the lifting ring at the upper port of the clutch lifting tube. The lower end of the hollow camera rod presses the upper end face of the blocking column to seal the outer circle of the blocking column tightly with the perspective hole, and then the hydraulic cylinder immediately reverses and extends rapidly. Due to the sliding friction between the outer circle of the high-temperature resistant friction washer and the inner circle of the telescopic sleeve, the rebound speed of the telescopic sleeve 38 is slow, and the hydraulic cylinder drives the hanger, the high-temperature resistant camera and the hanging pressure block to separate from the clutch lifting tube upward; thus completing a cycle operation of observing the combustion condition inside the furnace body; lifting the high-temperature resistant camera to the outside above the water-cooling sleeve assembly, and the water-cooling sleeve assembly also suspends water cooling.

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