An automatic switching device for fuel oil in carbon black production

Abstract

The present application relates to an automatic switching device for fuel oil in carbon black production, which includes an oil gun, a moving mechanism, a fuel control mechanism, a reactor jacket pipe and a DCS; the fuel control mechanism is connected to the oil gun through a pipeline, the oil gun is arranged on the moving mechanism, and the reactor jacket pipe is arranged on the reactor; the moving mechanism includes a gear track, a moving base, a lead screw and an oil gun bracket; the fuel control mechanism includes an automatic fuel inlet valve, an automatic fuel reflux valve, an automatic purge steam valve and an automatic atomizing air valve; the inner diameter of the reactor jacket pipe matches the oil gun, and the reactor jacket pipe is provided with a guide wheel and an automatic inlet valve, and the guide wheel is arranged around the reactor jacket pipe. The present invention can accurately locate the position of the oil gun when the reactor switches the fuel, realize the automatic entry of the oil gun into the reactor and the rapid switching of the fuel, reduce the labor intensity of the operator, and increase the service life of the reactor.

Description

Technical Field

[0001] The present application relates to the technical field of carbon black production, and in particular to an automatic switching device for fuel oil in carbon black production. Background Art

[0002] Oil furnace carbon black is produced by incomplete combustion and cracking of hydrocarbon compounds. The reaction device for carbon black production is a reactor, which consists of an air distributor, a combustion chamber, a throat, a reaction section, a quenching section, and a dwell section. The heated air enters the reactor from above the air distributor, and the coal gas enters the reactor radially from the combustion chamber and burns in a certain proportion. In order to ensure the stability of normal production, when there is no coal gas or the coal gas fluctuates greatly, fuel oil needs to be poured to switch between coal gas and fuel oil. When pouring fuel oil, at least 3 operators are required to operate at the same time, and the speed is slow, requiring operators to quickly run to the site. If the fuel oil is not poured in time, the degree of automation is low, and the heat for combustion in the reactor cannot be provided in time, the furnace temperature fluctuates greatly, resulting in a decrease in the service life of the reactor. Summary of the invention

[0003] The purpose of the present invention is to provide an automatic switching device for fuel oil in carbon black production, which can accurately locate the oil gun when the reactor switches the fuel oil, realize the automatic entry of the oil gun into the reactor and the rapid switching of the fuel oil, thereby improving the service life of the reactor.

[0004] The technical solution adopted by the present application is: an automatic switching device for fuel oil in carbon black production, comprising an oil gun, a moving mechanism, a fuel control mechanism, a reactor jacket pipe and a DCS; the fuel control mechanism is connected to the oil gun through a pipeline, the oil gun is arranged on the moving mechanism, and the reactor jacket pipe is arranged on the reactor;

[0005] One end of the oil gun is provided with a fuel pipe opening and an atomizing air pipe opening, and the fuel pipe opening and the atomizing air pipe opening are respectively connected to the fuel control mechanism through pipelines; the muzzle of the oil gun is conical, and the diameter of the muzzle decreases from the inside to the outside;

[0006] The mobile mechanism includes a gear track, a mobile base, a lead screw and an oil gun bracket; the oil gun is arranged on the oil gun bracket, and the gear track is provided with a first touch switch and a second touch switch; the mobile base is provided with a traveling gear meshing with the gear track, and the traveling gears are symmetrically arranged on both sides of the mobile base, and the mobile base is also provided with a driving motor, a first transmission gear and a second transmission gear, the rotating shaft of the driving motor is connected to the first transmission gear, the first transmission gear and the second transmission gear are meshed and connected, and the second transmission gear is connected to the traveling gear through a connecting rod; one end of the lead screw is connected to the mobile base, and the other end is connected to the oil gun bracket;

[0007] The fuel control mechanism includes an automatic fuel inlet valve, an automatic fuel return valve, an automatic purge steam valve and an automatic atomizing air valve; the automatic fuel return valve is arranged on the fuel oil return pipe; the automatic purge steam valve is arranged on the purge steam pipe; one end of the fuel oil return pipe and the purge steam pipe are respectively connected to the fuel oil inlet pipe, and an automatic fuel inlet valve is arranged between the two connecting points; the automatic fuel inlet valve is arranged at the rear end of the fuel oil return pipe connecting point and the front end of the purge steam pipe connecting point; the fuel oil inlet pipe is connected to the fuel pipe port; the atomizing air pipe is connected to the atomizing air pipe port, and the automatic atomizing air valve is arranged on the atomizing air pipe;

[0008] The inner diameter of the reactor jacket pipe matches the oil gun, and a guide wheel and an automatic valve for entering the reactor are arranged on the reactor jacket pipe, and the guide wheel is arranged around the reactor jacket pipe; the first touch switch, the second touch switch, the drive motor, the automatic valve for fuel oil entering the furnace, the automatic valve for fuel oil reflux, the automatic valve for purge steam, the automatic valve for atomizing air and the automatic valve for entering the reactor are all electrically connected to the DCS.

[0009] Furthermore, a first positioning plate and a second positioning plate are respectively provided at the oil gun bracket and the reactor jacket pipe; four groups of infrared positioning devices are provided at corresponding positions of the first positioning plate and the second positioning plate, each group of infrared positioning devices includes an infrared transmitter and an infrared receiver, and each group of infrared transmitter and infrared receiver is respectively provided on the first positioning plate and the second positioning plate; the infrared transmitter or infrared receiver is provided around the first positioning plate or the second positioning plate, and adjacent infrared transmitters or infrared receivers are provided 90° apart.

[0010] Furthermore, the infrared transmitter and the infrared receiver are arranged in a horizontal or vertical direction; the first infrared transmitter, the second infrared transmitter, the third infrared receiver, and the fourth infrared receiver are arranged in sequence in a clockwise direction on the first positioning plate; the second positioning plate is arranged in sequence in a clockwise direction with a first infrared receiver matching the first infrared transmitter, a second infrared receiver matching the second infrared transmitter, a third infrared transmitter matching the third infrared receiver, and a fourth infrared transmitter matching the fourth infrared receiver.

[0011] Furthermore, a level gauge is provided on one side where the oil gun is connected to the oil gun bracket.

[0012] Furthermore, a limit baffle is provided on the gear track.

[0013] The beneficial effects of the present invention are:

[0014] (1) The mobile base replaces the workers in moving the oil gun, which reduces the labor intensity of the operators and improves the automation of the fuel switching of the reactor. The height of the oil gun can be adjusted by the screw so that the oil gun is aligned with the reactor jacket pipe. When switching the fuel, the oil gun can be quickly put in place to provide heat for the combustion of the reactor in time, maintain the furnace temperature, and avoid large fluctuations in the furnace temperature that greatly reduce the service life of the reactor;

[0015] (2) A guide wheel is provided at the reactor jacket tube. The end of the oil gun entering the reactor jacket tube is tapered. During the process of the oil gun entering the reactor jacket tube, the guide wheel can adjust the position of the oil gun and guide the oil gun to the center of the reactor jacket tube during the advancement of the oil gun. This can avoid the oil gun from getting stuck when entering the reactor jacket tube and reduce the resistance of the oil gun entering and exiting the reactor jacket tube.

[0016] (3) The first positioning plate and the second positioning plate are used to locate the position of the gear track and the height of the oil gun; the two sets of infrared positioning devices located in the horizontal position are used to locate the position of the gear track, and the two sets of infrared positioning devices located in the vertical position are used to locate the height of the oil gun; the oil gun is accurately moved in and out of the reactor jacket pipe by four sets of infrared positioning devices; preferably, different infrared positioning device components are installed in the horizontal direction or the vertical direction on the same positioning plate, that is, an infrared transmitter is installed on one side and an infrared receiver is installed on the other side, so as to improve the accuracy of positioning and prevent the four sets of infrared positioning devices from receiving signals crosswise;

[0017] (4) The oil gun is provided with a level. After the oil gun is positioned by the positioning plate, the oil gun posture is corrected by the level to make the oil gun horizontal. This prevents the oil gun from sinking due to its own weight when entering the reactor jacket tube due to its long length, and prevents the oil gun from failing to accurately enter the reactor jacket tube during the advancement of the oil gun. A limit baffle is provided on the gear track. After the oil gun is in place, the limit baffle can limit the oil gun from continuing to move forward. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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 of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0020] Figure 2 is a schematic diagram of a control structure of an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the gear track and the moving mechanism of an embodiment of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the first positioning plate and the second positioning plate according to an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the guide wheel according to an embodiment of the present invention;

[0024] Figure 6 Schematic diagram of the use status of an embodiment of the present invention.

[0025] Explanation of the accompanying drawings: 1-oil gun, 2-reactor jacket pipe, 3-DCS, 4-fuel pipe opening, 5-atomizing air pipe opening, 6-gear track, 7-movable base, 8-screw, 9-oil gun bracket, 10-first touch switch, 11-second touch switch, 12-travel gear, 13-drive motor, 14-first transmission gear, 15-second transmission gear, 16-fuel oil inlet automatic valve, 17-fuel oil return automatic valve, 18-purge steam automatic valve, 19-atomizing air automatic valve, 20-fuel oil return Pipeline, 21-purge steam pipeline, 22-fuel oil inlet pipeline, 23-atomizing air pipeline, 24-guide wheel, 25-first positioning plate, 26-second positioning plate, 27-first infrared transmitter, 28-second infrared transmitter, 29-third infrared receiver, 30-fourth infrared receiver, 31-first infrared receiver, 32-second infrared receiver, 33-third infrared transmitter, 34-fourth infrared transmitter, 35-level meter, 36-limit baffle, 37-reactor, 38-automatic valve into reactor. DETAILED DESCRIPTION

[0026] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and therefore, the present invention is not limited to the limitations of the specific embodiments disclosed below.

[0027] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field described in this application. The words "first", "second" and similar terms used in this patent application specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "an" do not indicate a quantity limitation, but indicate the existence of at least one. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship also changes accordingly.

[0028] like Figure 1 to Figure 6 As shown, an automatic switching device for fuel oil in carbon black production includes an oil gun 1, a moving mechanism, a fuel control mechanism, a reactor jacket pipe 2 and a DCS 3; the fuel control mechanism is connected to the oil gun 1 through a pipeline, the oil gun 1 is arranged on the moving mechanism, and the reactor jacket pipe 2 is arranged on the reactor 37.

[0029] A fuel pipe port 4 and an atomizing air pipe port 5 are provided at one end of the oil gun 1. The fuel pipe port 4 and the atomizing air pipe port 5 are respectively connected to the fuel control mechanism through pipelines to provide fuel oil and atomizing air into the oil gun 1. The muzzle of the oil gun 1 is conical, and the muzzle diameter decreases from the inside to the outside.

[0030] The moving mechanism includes a gear track 6, a moving base 7, a lead screw 8 and an oil gun bracket 9; the oil gun 1 is arranged on the oil gun bracket 9, and the oil gun bracket 9 is connected by bolts to hold the oil gun 1, and the gear track 6 is provided with a first touch switch 10 and a second touch switch 11; the moving base 7 is provided with a travel gear 12 meshing with the gear track 6, and the travel gear 12 is symmetrically arranged on both sides of the moving base 7, and the moving base 7 is also provided with a drive motor 13, a first transmission gear 14 and a second transmission gear 15, and the rotating shaft of the drive motor 13 is connected to the first transmission gear 15. The first transmission gear 14 is connected with the second transmission gear 15 in meshing connection, and the second transmission gear 15 is connected with the travel gear 12 through a connecting rod. The first transmission gear 14 is driven to rotate by a driving motor 13, and the second transmission gear 15 is driven to rotate. When the second transmission gear 15 rotates, the travel gear 12 rotates with the second transmission gear 15 under the action of the connecting rod, thereby driving the movable base 7 to move on the gear track 6; one end of the lead screw 8 is connected to the movable base 7, and the other end is connected to the oil gun bracket 9. The height of the oil gun 1 can be adjusted by the lead screw 8.

[0031] The fuel control mechanism includes an automatic fuel inlet valve 16, an automatic fuel return valve 17, an automatic purge steam valve 18 and an automatic atomizing air valve 19; the automatic fuel return valve 17 is arranged on the fuel oil return pipe 20; the automatic purge steam valve 18 is arranged on the purge steam pipe 21; one end of the fuel oil return pipe 20 and the purge steam pipe 21 are respectively connected to the fuel oil inlet pipe 22, and an automatic fuel inlet valve 16 is arranged between the two connecting points; the automatic fuel inlet valve 16 is arranged at the rear end of the connecting point of the fuel oil return pipe 20 and the front end of the connecting point of the purge steam pipe 21; the fuel oil inlet pipe 22 is connected to the fuel pipe port 4; the atomizing air pipe 23 is connected to the atomizing air pipe port 5, and the automatic atomizing air valve 19 is arranged on the atomizing air pipe 23. The fuel oil is delivered to the burner head through the fuel oil pump. The inlet of the oil pump is connected to the process oil tank, and the outlet of the oil pump is delivered to the burner head through a pipeline. To ensure that the fuel oil can be used at any time, the fuel pump is always kept in operation. When the fuel oil is not in use, the fuel oil pumped out by the oil pump needs to be returned to the process oil tank through the fuel oil return pipe 20. When the fuel oil is used, the fuel return automatic valve 17 needs to be closed. The purge steam pipe 21 is connected to the main steam pipe. When the fuel oil is not in use, a part of the fuel oil will remain in the oil gun 1. The fuel in the fuel gun 1 needs to be purged clean for the next use. When the oil gun 1 is inserted into the reactor 37, the purge steam automatic valve 18 needs to be opened to protect the gun head. Compressed air is produced by the air compressor and delivered to the burner head through the atomizing air pipe 23 for atomization of the fuel oil gun 1. The atomizing air can atomize the fuel oil into fine droplets so that the fuel oil can be fully burned.

[0032] The inner diameter of the reactor jacket tube 2 matches the oil gun 1. The reactor jacket tube 2 is provided with a guide wheel 24 and an automatic valve 38 for entering the reactor. The guide wheel 24 is arranged around the reactor jacket tube 2. The guide wheel 24 is composed of a plurality of rolling bearings. The inner diameter of the guide wheel 24 is the same as the outer diameter of the oil gun 1. The guide wheel 24 cooperates with the muzzle of the conical oil gun 1 to adjust the position of the oil gun 1 during the process of the oil gun 1 entering the reactor jacket tube 2, so that the oil gun 1 is aligned with the center of the reactor jacket tube 2. At the same time, the guide wheel 24 is driven to rotate when the oil gun 1 enters and exits the reactor jacket tube 2, which can avoid the oil gun 1 from getting stuck when entering the reactor jacket tube 2 and reduce the resistance of the oil gun 1 entering and exiting the reactor jacket tube 2. The first touch switch 10, the second touch switch 11, the drive motor 13, the automatic valve 16 for fuel oil entering the furnace, the automatic valve 17 for fuel oil reflux, the automatic valve 18 for purge steam, the automatic valve 19 for atomizing air and the automatic valve 38 for entering the reactor are all connected to the DCS 3 are electrically connected, and the first touch switch 10, the second touch switch 11, the drive motor 13, the fuel oil inlet automatic valve 16, the fuel oil return automatic valve 17, the purge steam automatic valve 18, the atomizing air automatic valve 19 and the reactor inlet automatic valve 38 are automatically controlled through the DCS 3.

[0033] In the embodiment of the present invention, the oil gun bracket 9 and the reactor jacket tube 2 are respectively provided with a first positioning plate 25 and a second positioning plate 26; four groups of infrared positioning devices are provided at the corresponding positions of the first positioning plate 25 and the second positioning plate 26, each group of infrared positioning devices includes an infrared transmitter and an infrared receiver, and each group of infrared transmitter and infrared receiver is respectively arranged on the first positioning plate 25 and the second positioning plate 26; the infrared transmitter or infrared receiver is arranged around the first positioning plate 25 or the second positioning plate 26, and adjacent infrared transmitters or infrared receivers are arranged 90° apart.

[0034] Preferably, the infrared transmitter and infrared receiver are arranged in the horizontal or vertical direction, and the first positioning plate 25 and the second positioning plate 26 are used to locate the position of the gear track 6 and the height of the oil gun 1; the two sets of infrared positioning devices located in the horizontal position are used to locate the position where the gear track 6 is laid, and the two sets of infrared positioning devices located in the vertical position are used to locate the height of the oil gun 1; through the four sets of infrared positioning devices, the oil gun 1 can accurately enter and exit the reactor jacket pipe 2. Preferably, different infrared positioning device components are installed in the horizontal or vertical direction on the same positioning plate, that is, the infrared transmitter is installed on one side and the infrared receiver is installed on the other side, so as to improve the accuracy of positioning and prevent the four sets of infrared positioning devices from cross-receiving signals. In the embodiment of the present invention, the first infrared transmitter 27, the second infrared transmitter 28, the third infrared receiver 29, and the fourth infrared receiver 30 are sequentially arranged on the first positioning plate 25 in a clockwise direction; the first infrared receiver 31 matching the first infrared transmitter 27, the second infrared receiver 32 matching the second infrared transmitter 28, the third infrared transmitter 33 matching the third infrared receiver 29, and the fourth infrared transmitter 34 matching the fourth infrared receiver 30 are sequentially arranged on the second positioning plate 26 in a clockwise direction. When the second infrared receiver 32 receives the infrared signal emitted by the second infrared transmitter 28, and the fourth infrared receiver 30 receives the infrared signal emitted by the fourth infrared transmitter 34, it indicates that the gear track 6 is at the same level as the reactor jacket pipe 2; when the first infrared receiver 31 receives the infrared signal emitted by the first infrared transmitter 27, and the third infrared receiver 29 receives the infrared signal emitted by the third infrared transmitter 33, it indicates that the oil gun 1 is at the same height as the reactor jacket pipe 2.

[0035] The working principle of the embodiment of the present invention is as follows:

[0036] When the fuel oil needs to be switched, the laying position of the gear track 6 and the height of the lead screw 8 are determined by the infrared positioning device on the first positioning plate 25 and the second positioning plate 26, and the oil gun 1 is positioned to a suitable position and fixed on the oil gun bracket 9. When the fuel oil has not yet entered the reactor 37, the fuel oil inlet automatic valve 16 is closed, the fuel oil reflux automatic valve 17 is opened, the purge steam automatic valve 18 is closed, the atomizing air automatic valve 19 is closed, and the reactor inlet automatic valve 38 is closed, and the fuel oil is in a reflux state. The mobile base 7 is driven to move by the driving motor 13 to send the oil gun 1 into the reactor 37. During the movement of the mobile base 7, when the mobile base 7 touches the first touch switch 10, the atomizing air automatic valve 19, the purge steam automatic valve 18 and the fuel inlet automatic valve 38 are opened at the same time to prepare for the oil gun 1 to supply oil; when the mobile base 7 touches the second touch switch 11, the fuel oil inlet automatic valve 16 is opened, the purge steam automatic valve 18 and the fuel oil return automatic valve 17 are closed, and the fuel oil enters the reactor 37 to provide fuel for the reactor 37. When it is necessary to use coal gas as fuel again, the driving motor 13 is reversed to drive the mobile base 7 to move in the opposite direction. When the mobile base 7 touches the second touch switch 11, the fuel oil inlet automatic valve 16 is closed, and the purge steam automatic valve 18 and the fuel oil return automatic valve 17 are opened; when the mobile base 7 touches the first touch switch 10, the atomizing air automatic valve 19, the purge steam automatic valve 18 and the fuel oil return automatic valve 38 are all closed and restored to the initial state. In the embodiment of the present invention, the mobile base 7 replaces the workers in moving the oil gun 1, thereby reducing manpower and improving the degree of automation of the fuel switching of the reactor 37. The height of the oil gun 1 can be adjusted by the screw 8 so that the oil gun 1 is aligned with the reactor jacket pipe 2. When switching the fuel, the oil gun 1 can be quickly put in place to provide heat for the combustion of the reactor 37 in time, maintain the furnace temperature, and avoid large fluctuations in the furnace temperature that reduce the service life of the reactor 37.

[0037] In the embodiment of the present invention, a level 35 is provided on one side of the oil gun 1 connected to the oil gun bracket 9. The level 35 is used to correct the posture of the oil gun 1 so that the oil gun 1 is in a horizontal state, so as to prevent the end of the oil gun 1 entering the reactor jacket pipe 2 from sinking due to its own weight due to the long length of the oil gun 1, and to prevent the oil gun 1 from accurately entering the reactor jacket pipe 2 during the advancement of the oil gun 1; a limit baffle 36 is provided on the gear track 6, and after the oil gun 1 is in place, the limit baffle 36 can limit the oil gun 1 from continuing to advance forward.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic switching device for fuel oil in carbon black production, characterized in that: It includes an oil gun, a moving mechanism, a fuel control mechanism, a reactor jacket pipe and a DCS; the fuel control mechanism is connected to the oil gun through a pipeline, the oil gun is arranged on the moving mechanism, and the reactor jacket pipe is arranged on the reactor; One end of the oil gun is provided with a fuel pipe opening and an atomizing air pipe opening, and the fuel pipe opening and the atomizing air pipe opening are respectively connected to the fuel control mechanism through pipelines; the muzzle of the oil gun is conical, and the diameter of the muzzle decreases from the inside to the outside; The mobile mechanism includes a gear track, a mobile base, a lead screw and an oil gun bracket; the oil gun is arranged on the oil gun bracket, and the gear track is provided with a first touch switch and a second touch switch; the mobile base is provided with a traveling gear meshing with the gear track, and the traveling gears are symmetrically arranged on both sides of the mobile base, and the mobile base is also provided with a driving motor, a first transmission gear and a second transmission gear, the rotating shaft of the driving motor is connected to the first transmission gear, the first transmission gear and the second transmission gear are meshed and connected, and the second transmission gear is connected to the traveling gear through a connecting rod; one end of the lead screw is connected to the mobile base, and the other end is connected to the oil gun bracket; The fuel control mechanism includes an automatic fuel inlet valve, an automatic fuel return valve, an automatic purge steam valve and an automatic atomizing air valve; the automatic fuel return valve is arranged on the fuel oil return pipe; the automatic purge steam valve is arranged on the purge steam pipe; one end of the fuel oil return pipe and the purge steam pipe are respectively connected to the fuel oil inlet pipe, and an automatic fuel inlet valve is arranged between the two connecting points; the automatic fuel inlet valve is arranged at the rear end of the fuel oil return pipe connecting point and the front end of the purge steam pipe connecting point; the fuel oil inlet pipe is connected to the fuel pipe port; the atomizing air pipe is connected to the atomizing air pipe port, and the automatic atomizing air valve is arranged on the atomizing air pipe; The inner diameter of the reactor jacket pipe matches the oil gun, and a guide wheel and an automatic valve for entering the reactor are arranged on the reactor jacket pipe, and the guide wheel is arranged around the reactor jacket pipe; the first touch switch, the second touch switch, the drive motor, the automatic valve for fuel oil entering the furnace, the automatic valve for fuel oil reflux, the automatic valve for purge steam, the automatic valve for atomizing air and the automatic valve for entering the reactor are all electrically connected to the DCS.

2. The automatic switching device for fuel oil for carbon black production according to claim 1, characterized in that: A first positioning plate and a second positioning plate are respectively provided at the oil gun bracket and the reactor jacket pipe; four groups of infrared positioning devices are provided at the corresponding positions of the first positioning plate and the second positioning plate, each group of infrared positioning devices includes an infrared transmitter and an infrared receiver, and each group of infrared transmitter and infrared receiver is respectively provided on the first positioning plate and the second positioning plate; the infrared transmitter or infrared receiver is provided around the first positioning plate or the second positioning plate, and adjacent infrared transmitters or infrared receivers are provided 90° apart.

3. The automatic switching device for fuel oil for carbon black production according to claim 2 is characterized in that: The infrared transmitter and infrared receiver are arranged in the horizontal or vertical direction; the first infrared transmitter, the second infrared transmitter, the third infrared receiver and the fourth infrared receiver are arranged in sequence in the clockwise direction on the first positioning plate; the first infrared receiver matching the first infrared transmitter, the second infrared receiver matching the second infrared transmitter, the third infrared transmitter matching the third infrared receiver and the fourth infrared transmitter matching the fourth infrared receiver are arranged in sequence in the clockwise direction on the second positioning plate.

4. The automatic switching device for fuel oil for carbon black production according to claim 1, characterized in that: A level gauge is arranged on one side where the oil gun is connected to the oil gun bracket.

5. The automatic switching device for fuel oil for carbon black production according to claim 1, characterized in that: A limit baffle is arranged on the gear track.

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