A plasma torch automatic plugging and unplugging device and its use method

Abstract

The present invention discloses an automatic plug-in and pull-out device for a plasma torch and a method for using the same, comprising a rodless cylinder support, a rodless cylinder mounting seat, a rodless cylinder, a torch body and a torch bracket; the rodless cylinder support is a horizontally arranged door-shaped structure and is fixed to a steel structure foundation; a rodless cylinder is horizontally and laterally arranged on the upper surface of the rodless cylinder support, the rodless cylinder uses compressed air as a power source, and the rodless cylinder mounting seat is sleeved on the rodless cylinder and performs horizontal and horizontal reciprocating motion through the rodless cylinder; a torch bracket is vertically arranged on the upper surface of the rodless cylinder mounting seat, and the torch body horizontally and laterally penetrates the left and right sides of the upper half of the torch bracket and is welded and fixed to the torch bracket; the torch body is a cylindrical device that converts electrical energy into thermal energy, and its output end is plugged into the furnace body through the furnace body flange port, and performs horizontal and horizontal reciprocating motion along the furnace body with the rodless cylinder mounting seat, and then performs automatic plug-in and pull-out action. The present invention realizes the automatic plug-in and pull-out function and avoids damage.

Description

Technical Field

[0001] The invention relates to the technical field of plasma torches, and in particular to an automatic plugging and unplugging device for a plasma torch and a use method thereof. Background Art

[0002] In the field of plasma torch technology, since the torch needs to be fixed and sealed during use, it is necessary to be able to unplug the plasma torch smoothly in an emergency to prevent accidents. Therefore, a matching plasma torch plug-in and unplug device is needed to meet its use requirements.

[0003] At present, the plug-in and pull-out devices of plasma torches mostly use motor-screw to complete their forward and backward movements. This method is extremely dependent on power and electricity. In the case of power failure in the system, the cooling water of the plasma torch cannot circulate, the temperature rises rapidly, and the motor cannot work. The plasma torch cannot be successfully pulled out of the application in time, which will cause the plasma torch to be damaged by high temperature. Therefore, it is an urgent problem to develop a plug-in and pull-out device that can meet the needs of plasma torches of various powers in various emergency situations, safely complete the smooth pull-out of plasma torches from high-temperature applications (high-temperature furnaces, high-temperature secondary combustion chambers), and ensure the safety of plasma torch equipment. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an automatic plug-in and unplug-out device for a plasma torch and a method of using the same, which realizes the automatic plug-in and unplug-out function. When the operating system loses power and the circulating water pump is damaged and cannot work, there is no need for personnel to go to the site for operation. The torch body can be unplugged automatically in the first place, thereby avoiding damage.

[0005] In order to solve the above technical problems, the present invention adopts the following technical scheme: an automatic plug-in and pull-out device for a plasma torch of the present invention, the innovation point of which is that it includes a rodless cylinder bracket, a rodless cylinder mounting seat, a rodless cylinder, a torch body and a torch bracket; the rodless cylinder bracket is a horizontally arranged door-shaped structure, and is arranged on the side of the furnace body flange, and is fixed to the steel structure foundation; a rodless cylinder is also horizontally and laterally arranged on the upper surface of the rodless cylinder bracket, the rodless cylinder uses compressed air as a power source, and the rodless cylinder mounting seat is sleeved on the The rodless cylinder is mounted on the rodless cylinder, and performs horizontal and transverse reciprocating motion on the upper surface of the rodless cylinder bracket through the rodless cylinder; a torch bracket is also vertically provided on the upper surface of the rodless cylinder mounting seat, and the torch body horizontally and transversely penetrates the left and right side surfaces of the upper half of the torch bracket, and is welded and fixed to the torch bracket; the torch body is a cylindrical device that converts electrical energy into thermal energy, and its output end is horizontally and transversely plugged into the furnace body through the furnace body flange, and performs horizontal and transverse reciprocating motion along the furnace body with the rodless cylinder mounting seat, and then performs automatic plug-in and pull-out action;

[0006] It also includes a water cooling device; the water cooling device is coaxially sleeved at the furnace body flange, and the water cooling device is screwed and fixed to the furnace body flange through its flange, and a first through hole matching the torch body is horizontally opened in the water cooling device from left to right, and the first through hole is coaxially arranged with the torch body, the torch body horizontally passes through the water cooling device through the first through hole, and the water cooling device does not interfere with the horizontal and horizontal reciprocating motion of the torch body;

[0007] It also includes an insulating sealing plate; an insulating sealing plate is coaxially provided on the left side of the water-cooling device, and the insulating sealing plate is screwed and fixed to the water-cooling device by bolts, and the water cooling of the water-cooling device ensures that the physical properties of the insulating sealing plate remain unchanged; the insulating sealing plate uses a polyurethane sheet, and its properties have a certain degree of softness; a second through hole matching the torch body is horizontally opened on the insulating sealing plate from left to right, and the second through hole is coaxially arranged with the torch body; the torch body horizontally and laterally passes through the insulating sealing plate through the second through hole, and the insulating sealing plate does not interfere with the horizontal and lateral reciprocating motion of the torch body, and is squeezed with the insulating sealing plate through the right side of the torch bracket to form a sealing effect;

[0008] It also includes a sealing door and a rotating door device; a sealing door is coaxially fitted on the left side of the insulating sealing plate, and the sealing door is horizontally rotated around the right end of the water cooling device through the rotating door device, and the rotating door device is electrically connected to the rodless cylinder, and when the insulating sealing plate is pulled out of the torch body, the sealing door is driven to automatically rotate horizontally in a clockwise direction and fit tightly with the left side of the insulating sealing plate to ensure sealing, thereby avoiding the leakage of toxic and harmful gases; when the torch body is in an inserted state, the rotating door device drives the sealing door to automatically rotate horizontally in a counterclockwise direction, and does not interfere with the insertion action of the torch body;

[0009] The revolving door device includes a movable shaft, an arm plate, an axial force bearing assembly, a rotating shaft, a radial force bearing assembly, a coupling and a swing cylinder; a swing cylinder is also provided at the lower end of the left side of the water cooling device, and the setting position of the swing cylinder needs to ensure that the insulating sealing plate and the water cooling device do not interfere with the movement of the sealing door; the swing end of the swing cylinder is arranged on the side close to the torch bracket, and the rotating shaft is vertically arranged on the side close to the swing end of the swing cylinder, and an axial force bearing assembly and a radial force bearing assembly are also coaxially spaced and sleeved at both ends of the rotating shaft, and the axial force bearing assembly is arranged on the right side of the water cooling device and is fixed by the axial force bearing assembly and the radial force bearing assembly Rotating shaft; one end of the rotating shaft extends out of the radial force bearing assembly, and is coaxially linked with the swing end of the swing cylinder through a coupling, and then reciprocates 180° along its own axial direction under the drive of the swing cylinder; the arm plate is horizontally arranged, and one end of it is fixedly connected to the rotating shaft relative to the position between the axial force bearing assembly and the radial force bearing assembly, and swings back and forth in the horizontal direction with the rotation of the rotating shaft, and a movable shaft is also vertically provided at the other end of the arm plate, and one side of the sealing door is vertically hinged with the arm plate through the movable shaft, and then under the drive of the swing cylinder, the rotating shaft rotates to drive the arm plate to swing back and forth in the horizontal direction, thereby realizing the opening and closing of the sealing door.

[0010] Preferably, the rodless cylinder is the main actuator, and first air vents are respectively provided at the left and right ends of the rodless cylinder, and the rodless cylinder mounting seat is driven to move horizontally through the switching of air inlet and outlet of the two first air vents.

[0011] Preferably, it also includes an insulating plate and insulating bolts; an insulating plate is also horizontally arranged between the torch support and the rodless cylinder, the insulating plate is screwed and fixed to the rodless cylinder mounting base by insulating bolts, and the torch support is vertically fixed to the upper surface of the insulating plate, and moves horizontally with the rodless cylinder mounting base, and then the rodless cylinder and the torch support are insulated and separated by the insulating plate, ensuring the safety of electricity use when the torch body is energized.

[0012] Preferably, the stroke of the rodless cylinder mounting seat needs to ensure that when the torch body is in the pulled-out state, the torch body is completely separated from the insulating sealing plate, the water cooling device and the furnace body. At the same time, it also needs to ensure that when the torch body is in the inserted state, the torch body is inserted into the furnace body and the right side surface of the torch bracket is squeezed against the insulating sealing plate.

[0013] Preferably, two second air vents are provided on the swing cylinder, and the rotating shaft is driven to perform 180° reciprocating rotation by switching the air inlet and outlet of the two second air vents.

[0014] The invention discloses a method for using a plasma torch automatic plugging and unplugging device, the innovation of which is that it comprises the following steps:

[0015] Step 1: After the installation is completed, use the battery in the DCS cabinet as the power supply for the pneumatic solenoid valve to control the movement of the rodless cylinder and the swing cylinder;

[0016] Step 2: Use the rodless cylinder to drive the rodless cylinder mounting seat to move to the left side in the pulled-out state. This position is used as the initial position. Then, the swing cylinder drives the arm plate to swing horizontally in the counterclockwise direction, thereby opening the sealing door and preparing for the insertion of the torch body.

[0017] Step 3: Ventilate the rodless cylinder to drive the torch body to move to the right, and then pass through the insulating sealing plate and the water cooling device in sequence, and then slowly insert it into the furnace body through the furnace body flange; when the right side of the torch bracket is pressed against the insulating sealing plate, sealing is achieved;

[0018] Step 4: When an emergency occurs, the power supply of the instrument controlling the cylinder is still powered, and compressed air still exists in the compressed air system. The pneumatic solenoid valve changes the direction of the cylinder air circuit, and the rodless cylinder drives the torch body to move to the left and pull it out to the appropriate position. Then the swing cylinder drives the arm plate to swing horizontally in a clockwise direction, thereby closing the sealing door.

[0019] Beneficial effects of the present invention:

[0020] (1) The present invention realizes the automatic plug-in and pull-out function. When the operating system loses power supply and the circulating water pump is damaged and cannot work, there is no need for personnel to go to the site for operation. The torch body can be automatically pulled out immediately, thereby avoiding damage;

[0021] (2) When the torch body is pulled out, the sealing door can be automatically closed, thereby preventing toxic and harmful gases from overflowing and injuring operators;

[0022] (3) The present invention meets the basic use conditions of torch sealing and insulation;

[0023] (4) The present invention reduces manual operations, thereby ensuring personnel safety;

[0024] (5) The present invention uses compressed air as a power source, thereby avoiding the situation where the motor has no electricity to provide power after a power outage;

[0025] (6) The present invention has a simple structure, and its materials are mostly carbon structural steel and austenitic stainless steel, which are easy to purchase and process. Meanwhile, the rodless cylinder and the swing cylinder are both mature products on the market with reliable performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a front view of the present invention in the inserted state.

[0028] Figure 2 for Figure 1 Top view of the .

[0029] Figure 3 It is a top view of the present invention in the pulled-out state.

[0030] Figure 4 It is a structural schematic diagram of the rodless cylinder of the present invention.

[0031] Figure 5 for Figure 2 Schematic diagram of the structure of the central revolving door device.

[0032] Figure 6 It is a schematic diagram of the connection between the torch bracket and the rodless cylinder bracket of the present invention.

[0033] Figure 7 It is a schematic diagram of the sealing door of the present invention when it is in a closed state.

[0034] Among them, 1-rodless cylinder bracket; 2-rodless cylinder mounting base; 3-rodless cylinder; 4-insulating plate; 5-torch body; 6-torch bracket; 7-insulating sealing plate; 8-water cooling device; 9-furnace flange; 10-sealing door; 11-rotating door device; 12-movable shaft; 13-first air vent; 14-insulating bolt; 111-arm plate; 112-axial force bearing assembly; 113-rotating shaft; 114-radial force bearing assembly; 115-coupling; 116-swing cylinder; 117-second air vent. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be clearly and completely described below through specific implementation methods.

[0036] The present invention discloses an automatic plugging and unplugging device for a plasma torch, comprising a rodless cylinder support 1, a rodless cylinder mounting base 2, a rodless cylinder 3, a torch body 5 and a torch bracket 6; the specific structure is as follows Figures 1 to 7As shown, the rodless cylinder bracket 1 is a horizontally arranged door-shaped structure, and is arranged on the side of the furnace body flange opening 9, and is fixed to the steel structure foundation; a rodless cylinder 3 is also horizontally and laterally arranged on the upper surface of the rodless cylinder bracket 1, and the rodless cylinder 3 uses compressed air as a power source, and the rodless cylinder mounting seat 2 is sleeved on the rodless cylinder 3, and performs horizontal and horizontal reciprocating motion on the upper surface of the rodless cylinder bracket 1 through the rodless cylinder 3; wherein, the rodless cylinder 3 is the main actuator, and first air vents 13 are respectively opened at the left and right ends of the rodless cylinder 3, and the rodless cylinder mounting seat 2 is driven to perform horizontal and horizontal movement through the switching of the inlet and outlet air of the two first air vents 13.

[0037] The present invention also vertically provides a torch bracket 6 on the upper surface of the rodless cylinder mounting base 2, and the torch body 5 horizontally penetrates the left and right sides of the upper half of the torch bracket 6 and is welded and fixed to the torch bracket 6; Figure 1 , Figure 2 As shown, an insulating plate 4 is also horizontally provided between the torch bracket 6 and the rodless cylinder 3, and the insulating plate 4 is screwed and fixed to the rodless cylinder mounting base 2 through insulating bolts 14, and the torch bracket 6 is vertically fixed to the upper surface of the insulating plate 4, and moves horizontally with the rodless cylinder mounting base 2, and then the rodless cylinder 3 and the torch bracket 6 are insulated and separated by the insulating plate 4, ensuring the safety of electricity use when the torch body 5 is energized. In the present invention, since the torch body 5 is energized during normal operation, it needs to be insulated and separated to ensure the safety of electricity use.

[0038] The torch body 5 of the present invention is a cylindrical device that converts electrical energy into thermal energy, and its output end is horizontally plugged into the furnace body through the furnace body flange opening 9, and moves horizontally and horizontally along the furnace body with the rodless cylinder mounting seat 2, thereby performing automatic plug-in and pull-out actions. Figures 1 to 7 As shown, a water cooling device 8 is coaxially sleeved at the furnace body flange opening 9, and the water cooling device 8 is screwed and fixed to the furnace body flange opening 9 through its flange. A first through hole matching the torch body 5 is horizontally opened left and right in the water cooling device 8, and the first through hole is coaxially arranged with the torch body 5. The torch body 5 horizontally passes through the water cooling device 8 through the first through hole, and the water cooling device 8 does not interfere with the horizontal and horizontal reciprocating motion of the torch body 5.

[0039] In the present invention, an insulating sealing plate 7 is coaxially attached to the left side of the water cooling device 8, and the insulating sealing plate 7 is screwed and fixed to the water cooling device 8 by bolts. Since the torch body 5 is used in high temperature occasions, the material of the insulating sealing plate 7 cannot withstand high temperature, so it is necessary to cool down the temperature by water cooling of the water cooling device 8 to ensure that the physical properties of the insulating sealing plate 7 remain unchanged; Figures 1 to 7As shown, the insulating sealing plate 7 is made of a polyurethane plate, and its properties have a certain degree of softness; a second through hole matching the torch body 5 is horizontally opened on the insulating sealing plate 7 from left to right, and the second through hole is coaxially arranged with the torch body 5; the torch body 5 horizontally and laterally passes through the insulating sealing plate 7 through the second through hole, and the insulating sealing plate 7 does not interfere with the horizontal and lateral reciprocating motion of the torch body 5, and is squeezed with the insulating sealing plate 7 through the right side of the torch bracket 6 to form a sealing effect.

[0040] The stroke of the rodless cylinder mounting base 2 of the present invention needs to ensure that when the torch body 5 is in the pulled-out state, the torch body 5 is completely separated from the insulating sealing plate 7, the water cooling device 8 and the furnace body. At the same time, it also needs to ensure that when the torch body 5 is in the inserted state, the torch body 5 is inserted into the furnace body and the right side surface of the torch bracket 6 is squeezed against the insulating sealing plate 7.

[0041] The present invention also has a sealing door 10 coaxially attached to the left side of the insulating sealing plate 7. Figures 1 to 7 As shown, the sealing door 10 rotates horizontally around the right end of the water cooling device 8 through the rotating door device 11, and the rotating door device 11 is electrically connected to the rodless cylinder 3, and when the torch body 5 pulls out the insulating sealing plate 7, the sealing door 10 is driven to automatically rotate horizontally in a clockwise direction and fit tightly against the left side of the insulating sealing plate 7 to ensure sealing, thereby avoiding the leakage of toxic and harmful gases; when the torch body 5 is in the inserted state, the rotating door device 11 drives the sealing door 10 to automatically rotate horizontally in a counterclockwise direction, and does not interfere with the insertion action of the torch body 5.

[0042] The revolving door device 11 includes a movable shaft 12, an arm plate 111, an axial force bearing assembly 112, a rotating shaft 113, a radial force bearing assembly 114, a coupling 115 and a swing cylinder 116; Figures 1 to 7As shown, a swing cylinder 116 is also provided at the lower end of the left side of the water cooling device 8, and the setting position of the swing cylinder 116 needs to ensure that the insulating sealing plate 7 and the water cooling device 8 do not interfere with the movement of the sealing door 10; the swing end of the swing cylinder 116 is arranged on the side close to the torch bracket 6, and the rotating shaft 113 is vertically arranged on the side close to the swing end of the swing cylinder 116, and an axial force bearing assembly 112 and a radial force bearing assembly 114 are also coaxially spaced and sleeved at both ends of the rotating shaft 113, and the axial force bearing assembly 112 is arranged on the right side of the water cooling device 8, and the rotating shaft 113 is fixed by the axial force bearing assembly 112 and the radial force bearing assembly 114; one end of the rotating shaft 113 extends from the radial force bearing assembly 114 , and is coaxially linked with the swing end of the swing cylinder 116 through a coupling 115, and then rotates 180° back and forth along its own axis under the drive of the swing cylinder 116; the arm plate 111 is horizontally arranged, and one end of it is fixedly connected to the rotating shaft 113 relative to the position between the axial force bearing assembly 112 and the radial force bearing assembly 114, and swings back and forth horizontally with the rotation of the rotating shaft 113, and a movable shaft 12 is vertically provided at the other end of the arm plate 111, and one side of the sealing door 10 is vertically hinged with the arm plate 111 through the movable shaft 12, and then under the drive of the swing cylinder 116, the rotating shaft 113 rotates to drive the arm plate 111 to swing back and forth horizontally, thereby realizing the opening and closing of the sealing door 10.

[0043] like Figure 5 As shown, two second air vents 117 are provided on the swing cylinder 116 , and the rotating shaft 113 is driven to perform 180° reciprocating rotation through the switching of air inlet and outlet of the two second air vents 117 .

[0044] A method for using a plasma torch automatic plugging and unplugging device of the present invention comprises the following steps:

[0045] Step 1: After the installation is completed, use the battery in the DCS (distributed control system) cabinet as the power supply for the pneumatic solenoid valve, thereby controlling the movement of the rodless cylinder 3 and the swing cylinder 116.

[0046] Step 2: Drive the rodless cylinder mounting base 2 to the left side in the pulled-out state through the rodless cylinder 3. This position is used as the initial position. Then the arm plate 111 is driven by the swing cylinder 116 to swing horizontally in the counterclockwise direction, thereby making the sealing door 10 in the open state, preparing for the insertion of the torch body.

[0047] Step 3: Ventilate the rodless cylinder 3 to drive the torch body 5 to move to the right, and pass through the insulating sealing plate 7 and the water cooling device 8 in sequence, and then slowly insert it into the furnace body through the furnace body flange 9; when the right side of the torch bracket 6 is pressed against the insulating sealing plate 7, sealing is achieved.

[0048] Step 4: When an emergency occurs, the instrument power supply that controls the cylinder is still powered, and compressed air still exists in the compressed air system. The pneumatic solenoid valve changes the direction of the cylinder air circuit, and the rodless cylinder 3 drives the torch body 5 to move to the left and pull it out to the appropriate position. Then the swing cylinder 116 drives the arm plate 111 to swing horizontally in the clockwise direction, thereby closing the sealing door 10.

[0049] Beneficial effects of the present invention:

[0050] (1) The present invention realizes the automatic plug-in and pull-out function. When the operating system loses power supply and the circulating water pump is damaged and cannot work, there is no need for personnel to go to the site for operation. The torch body 5 can be automatically pulled out immediately, thereby avoiding damage;

[0051] (2) In the present invention, when the torch body 5 is pulled out, the sealing door 10 can be automatically closed, thereby preventing the occurrence of toxic and harmful gas overflow and harm to the operator;

[0052] (3) The present invention meets the basic use conditions of torch sealing and insulation;

[0053] (4) The present invention reduces manual operations, thereby ensuring personnel safety;

[0054] (5) The present invention uses compressed air as a power source, thereby avoiding the situation where the motor has no electricity to provide power after a power outage;

[0055] (6) The present invention has a simple structure, and its materials are mostly carbon structural steel and austenitic stainless steel, which are easy to purchase and process. Meanwhile, the rodless cylinder 3 and the swing cylinder 116 are both mature products on the market with reliable performance.

[0056] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering technicians in the field should fall within the protection scope of the present invention. The technical contents for which protection is sought in the present invention have been fully recorded in the technical requirements.

Claims

1. A plasma torch automatic plugging and unplugging device, characterized in that: It includes a rodless cylinder bracket, a rodless cylinder mounting seat, a rodless cylinder, a torch body and a torch bracket; the rodless cylinder bracket is a horizontally arranged door-shaped structure, and is arranged on the side close to the furnace body flange opening, and is fixed to the steel structure foundation; a rodless cylinder is also horizontally and laterally arranged on the upper surface of the rodless cylinder bracket, the rodless cylinder uses compressed air as a power source, and the rodless cylinder mounting seat is sleeved on the rodless cylinder, and performs horizontal and horizontal reciprocating motion on the upper surface of the rodless cylinder bracket through the rodless cylinder; a torch bracket is also vertically arranged on the upper surface of the rodless cylinder mounting seat, and the torch body horizontally and laterally penetrates the left and right side surfaces of the upper half of the torch bracket, and is welded and fixed to the torch bracket; the torch body is a cylindrical device that converts electrical energy into thermal energy, and its output end is horizontally and laterally plugged into the furnace body through the furnace body flange opening, and performs horizontal and horizontal reciprocating motion along the furnace body with the rodless cylinder mounting seat, and then performs automatic plug-in and pull-out action; It also includes a water cooling device; the water cooling device is coaxially sleeved at the furnace body flange, and the water cooling device is screwed and fixed to the furnace body flange through its flange, and a first through hole matching the torch body is horizontally opened in the water cooling device from left to right, and the first through hole is coaxially arranged with the torch body, the torch body horizontally passes through the water cooling device through the first through hole, and the water cooling device does not interfere with the horizontal and horizontal reciprocating motion of the torch body; It also includes an insulating sealing plate; an insulating sealing plate is coaxially provided on the left side of the water-cooling device, and the insulating sealing plate is screwed and fixed to the water-cooling device by bolts, and the water cooling of the water-cooling device ensures that the physical properties of the insulating sealing plate remain unchanged; the insulating sealing plate uses a polyurethane sheet, and its properties have a certain degree of softness; a second through hole matching the torch body is horizontally opened on the insulating sealing plate from left to right, and the second through hole is coaxially arranged with the torch body; the torch body horizontally and laterally passes through the insulating sealing plate through the second through hole, and the insulating sealing plate does not interfere with the horizontal and lateral reciprocating motion of the torch body, and is squeezed with the insulating sealing plate through the right side of the torch bracket to form a sealing effect; It also includes a sealing door and a rotating door device; a sealing door is coaxially fitted on the left side of the insulating sealing plate, and the sealing door is horizontally rotated around the right end of the water cooling device through the rotating door device, and the rotating door device is electrically connected to the rodless cylinder, and when the insulating sealing plate is pulled out of the torch body, the sealing door is driven to automatically rotate horizontally in a clockwise direction and fit tightly with the left side of the insulating sealing plate to ensure sealing, thereby avoiding the leakage of toxic and harmful gases; when the torch body is in an inserted state, the rotating door device drives the sealing door to automatically rotate horizontally in a counterclockwise direction, and does not interfere with the insertion action of the torch body; The revolving door device includes a movable shaft, an arm plate, an axial force bearing assembly, a rotating shaft, a radial force bearing assembly, a coupling and a swing cylinder; a swing cylinder is also provided at the lower end of the left side of the water cooling device, and the setting position of the swing cylinder needs to ensure that the insulating sealing plate and the water cooling device do not interfere with the movement of the sealing door; the swing end of the swing cylinder is arranged on the side close to the torch bracket, and the rotating shaft is vertically arranged on the side close to the swing end of the swing cylinder, and an axial force bearing assembly and a radial force bearing assembly are also coaxially spaced and sleeved at both ends of the rotating shaft, and the axial force bearing assembly is arranged on the right side of the water cooling device and is fixed by the axial force bearing assembly and the radial force bearing assembly Rotating shaft; one end of the rotating shaft extends out of the radial force bearing assembly, and is coaxially linked with the swing end of the swing cylinder through a coupling, and then reciprocates 180° along its own axial direction under the drive of the swing cylinder; the arm plate is horizontally arranged, and one end of it is fixedly connected to the rotating shaft relative to the position between the axial force bearing assembly and the radial force bearing assembly, and swings back and forth in the horizontal direction with the rotation of the rotating shaft, and a movable shaft is also vertically provided at the other end of the arm plate, and one side of the sealing door is vertically hinged with the arm plate through the movable shaft, and then under the drive of the swing cylinder, the rotating shaft rotates to drive the arm plate to swing back and forth in the horizontal direction, thereby realizing the opening and closing of the sealing door.

2. The automatic plugging and unplugging device for a plasma torch according to claim 1, characterized in that: The rodless cylinder is the main actuator, and first air vents are respectively provided at the left and right ends of the rodless cylinder. The rodless cylinder mounting seat is driven to move horizontally through the switching of air inlet and outlet of the two first air vents.

3. The automatic plugging and unplugging device for a plasma torch according to claim 1, characterized in that: It also includes an insulating plate and insulating bolts; an insulating plate is also horizontally arranged between the torch support and the rodless cylinder, the insulating plate is screwed and fixed to the rodless cylinder mounting base through insulating bolts, and the torch support is vertically fixed to the upper surface of the insulating plate, and moves horizontally with the rodless cylinder mounting base, and then the rodless cylinder and the torch support are insulated and separated by the insulating plate, ensuring the safety of electricity use when the torch body is energized.

4. The automatic plugging and unplugging device for a plasma torch according to claim 1, characterized in that: The stroke of the rodless cylinder mounting seat must ensure that when the torch body is in the pulled-out state, the torch body is completely separated from the insulating sealing plate, the water cooling device and the furnace body. It must also ensure that when the torch body is in the inserted state, the torch body is inserted into the furnace body and the right side of the torch bracket is squeezed against the insulating sealing plate.

5. The automatic plugging and unplugging device for a plasma torch according to claim 1, characterized in that: Two second air vents are also provided on the swing cylinder, and the rotating shaft is driven to perform 180° reciprocating rotation through switching of air inlet and outlet of the two second air vents.

6. The method for using the automatic plugging and unplugging device for a plasma torch according to any one of claims 1 to 5, characterized in that The following steps are involved: Step 1: After the installation is completed, use the battery in the DCS cabinet as the power supply for the pneumatic solenoid valve to control the movement of the rodless cylinder and the swing cylinder; Step 2: Use the rodless cylinder to drive the rodless cylinder mounting seat to move to the left side in the pulled-out state. This position is used as the initial position. Then, the swing cylinder drives the arm plate to swing horizontally in the counterclockwise direction, thereby opening the sealing door and preparing for the insertion of the torch body. Step 3: Ventilate the rodless cylinder to drive the torch body to move to the right, and then pass through the insulating sealing plate and the water cooling device in sequence, and then slowly insert it into the furnace body through the furnace body flange; when the right side of the torch bracket is pressed against the insulating sealing plate, sealing is achieved; Step 4: When an emergency occurs, the power supply of the instrument controlling the cylinder is still powered, and compressed air still exists in the compressed air system. The pneumatic solenoid valve changes the direction of the cylinder air circuit, and the rodless cylinder drives the torch body to move to the left and pull it out to the appropriate position. Then the swing cylinder drives the arm plate to swing horizontally in a clockwise direction, thereby closing the sealing door.

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