Vacuum consumable electric arc furnace with hearth cleaning function

Abstract

The invention discloses a vacuum consumable electric arc furnace with a hearth cleaning function, and relates to the technical field of electric arc furnaces, the vacuum consumable electric arc furnace comprises a mounting plate, a scraping part and a scrubbing part, a main pipe rotates to drive an arc-shaped scraper knife to rotate, various residual impurities on the inner wall of a hearth are scraped, and when the arc-shaped scraper knife makes contact with harder or large impurities, the arc-shaped scraper knife is driven to rotate. At the moment, an arc-shaped scraper knife extrudes a first spring, the collision force between the arc-shaped scraper knife and hard impurities is reduced through the first spring, a coating on the inner wall of the hearth is prevented from being damaged, a movable piston is pushed to move through a movable rod, liquid in a liquid storage cavity is extruded, and the liquid enters a blocking cavity through a connecting pipe and pushes a blocking piston to move; the through hole is aligned with the flow channel in the connecting rod, at the moment, the cleaning liquid enters the inclined nozzle through the flow channel in the connecting rod and is directly sprayed to the position where the arc-shaped scraper knife makes contact with the hard impurities, the hard impurities are independently further softened and diluted, the hard impurities are conveniently shoveled away by the arc-shaped scraper knife, and the cleaning efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of electric arc furnaces, and more particularly to a vacuum consumable electric arc furnace with a furnace cleaning function. Background Art

[0002] The vacuum consumable arc furnace is a metallurgical equipment used to produce high-quality metals and alloys. It is especially suitable for manufacturing key materials in aviation, aerospace and other high-performance application fields. The VAR furnace uses arc heat to melt metal electrodes in a high vacuum environment, and drips the molten metal into a water-cooled copper mold to re-solidify to form an ingot. During the whole process, since it is carried out in a vacuum environment, it can effectively remove gas impurities (such as hydrogen, nitrogen, etc.) in the metal, reduce non-metallic inclusions, and thus improve the purity and uniformity of the metal material. It is used in the production of titanium and titanium alloys, nickel-based superalloys, special steels and other metal materials with extremely high purity requirements. It is one of the indispensable key equipment in the modern metallurgical industry and is of great significance to promoting the development of high-tech fields.

[0003] The vacuum consumable arc furnace needs to be cleaned regularly during use. After each smelting, some metals, oxides and other impurities will remain in the furnace. If these residues are not removed in time, they may affect the quality of the next smelting. In order to ensure the consistency of each smelting process and the stability of product quality, it is very important to keep the furnace clean. Usually, a robotic arm system is used with brushes, scrapers and other tools for physical cleaning. Sometimes chemical cleaning methods are required to remove residues that are difficult to remove physically.

[0004] In actual use of the prior art, since the inner wall of the furnace of a vacuum consumable arc furnace is usually coated with some special coatings to protect the metal substrate from high temperature, corrosion and wear, when a scraper is used to clean the inner wall of the furnace, if the scraper material is too hard or too much pressure is applied, scratches or wear points may be generated on the coating surface, destroying the continuity and integrity of the coating, thereby affecting its performance and life. Therefore, in response to the above technical problems, it is necessary to provide a vacuum consumable arc furnace with a furnace cleaning function. Summary of the invention

[0005] The object of the present invention is to provide a vacuum consumable arc furnace with a furnace cleaning function to solve the above-mentioned problems.

[0006] In order to achieve the above purpose, the technical solution provided by an embodiment of the present invention is as follows: A vacuum consumable arc furnace with a furnace cleaning function comprises a mounting plate, a scraper and a scrubbing member, wherein the inner cavity of the mounting plate is fixedly connected with a liquid infusion pipe, the lower end of the liquid infusion pipe is connected with a main pipe through a rotating joint, a water pump is installed on the main pipe, the outer surface of the main pipe is fixedly connected with a gear ring, the outer surface of the gear ring is meshed with a gear, a furnace cover is installed on the outer surface of the mounting plate, a furnace body is installed on the outer surface of the main pipe, the scraper comprises two connecting rods symmetrically fixedly connected to the outer surface of the main pipe, one end of the connecting rod is fixedly connected to a mounting seat, the inner cavity of the mounting seat is movably connected with an arc-shaped scraper, the inner cavity of the mounting seat is provided with a liquid storage cavity, the inner cavity of the liquid storage cavity is slidably connected with a movable piston, and one side of the arc-shaped scraper is symmetrically fixedly connected with two A moving rod, the moving rod passes through the mounting seat and is fixedly connected to the moving piston, the inner cavity of the connecting rod is provided with a flow channel connected to an oblique nozzle, the flow channel provided in the connecting rod is connected to the main pipe, the inner cavity of the connecting rod is provided with a blocking chamber, the inner cavity of the blocking chamber is movably connected to a blocking piston, the brushing part includes two sleeves symmetrically fixedly connected to the outer surface of the main pipe, the inner cavity of the sleeve close to one end of the main pipe is rotatably connected to a rotating ball, the inner cavity of the sleeve is interspersed with an inner rod, the outer surface of the inner rod is fixedly connected to a sealing piston, the inner rod is fixedly connected to a push rod at one end inside the sleeve, the inner rod is fixedly connected to a brush at one end outside the sleeve, a wiping sponge is installed on the outer surface of the main pipe, and a detection rod is installed on one end of the outer surface of the main pipe.

[0007] As a further improvement of the present invention, two electric push rods are symmetrically fixedly connected to the inner cavity of the furnace cover, a lower end of the electric push rod is fixedly connected to a mounting plate, a lower end of the main pipe is connected to a multi-head nozzle, a motor is fixedly connected to the lower surface of the mounting plate, an output shaft end of the motor is fixedly connected to a gear, and the main pipe is located in the furnace of the furnace body.

[0008] As a further improvement of the present invention, the wiping sponge is annular and abuts against the furnace of the furnace body, a fixing ring is fixedly connected to the inner side of the wiping sponge, four fixing rods are evenly fixedly connected to the inner cavity of the fixing ring, and the other end of the fixing rod is fixedly connected to the main pipe.

[0009] As a further improvement of the present invention, the arc-shaped scraper abuts against the furnace of the furnace body, the arc-shaped scraper moves in the mounting seat, the movable piston moves in the inner cavity of the liquid storage chamber, and the space between the movable piston and the liquid storage chamber is filled with sealing liquid.

[0010] As a further improvement of the present invention, a spring 1 is sleeved on the outer surface of the moving rod, one end of the spring 1 is fixedly connected to the outer surface of the arc-shaped scraper blade, and the other end of the spring 1 is fixedly connected to the outer surface of the mounting seat.

[0011] As a further improvement of the present invention, a through hole is provided on the blocking piston, and the through hole has the same diameter as the flow channel in the connecting rod. The blocking piston moves in the blocking chamber, and the blocking chamber and the liquid storage chamber are connected by a connecting pipe. The inclined nozzle is inclined and facing the blade head of the arc-shaped scraper.

[0012] As a further improvement of the present invention, the inner rod and the sealing piston move in the inner cavity of the sleeve, and a spring 2 is sleeved on the outer surface of the inner rod. One end of the spring 2 is fixedly connected to the outer surface of the sealing piston, and the other end of the spring 2 is fixedly connected to the inner cavity wall of the sleeve.

[0013] As a further improvement of the present invention, a plurality of arc-shaped protrusions are evenly arranged on the outer surface of the rotating ball, the end of the push rod away from the inner rod is hemispherical and abuts against the outer surface of the rotating ball, half of the rotating ball is located inside the main pipe, and the other half is located inside the sleeve, and the outer surface of the brush abuts against the furnace of the furnace body.

[0014] As a further improvement of the present invention, the detection rod comprises a mounting rod fixedly connected to the outer surface of the main pipe, an ultrasonic probe is mounted on one end of the mounting rod, and an annular seal box is surrounded on the outer surface of the ultrasonic probe.

[0015] As a further improvement of the present invention, two electric push rods 2 are symmetrically fixedly connected to one side of the seal box, the other end of the electric push rods 2 is fixedly connected to the main pipe, and the inner cavity of the seal box is fixedly connected to a seal sponge.

[0016] Compared with the prior art, the advantages of the present invention are: (1) This solution uses a motor to drive the gear to rotate, which drives the gear ring to rotate, and then drives the main pipe to rotate. The main pipe draws cleaning solution through a water pump and sprays it into the furnace through a multi-head nozzle in advance to soften the impurities and post-processing residues in the furnace. The main pipe rotates to ensure that the liquid can be evenly distributed on the entire inner wall of the furnace. The multi-head nozzle allows the liquid to be sprayed from multiple directions at the same time, increasing the coverage area and improving the cleaning efficiency.

[0017] (2) This scheme drives the arc-shaped scraper to rotate by rotating the main pipe to scrape off various residual impurities on the inner wall of the furnace. When the arc-shaped scraper contacts harder or larger impurities, the arc-shaped scraper will squeeze spring 1 to reduce the collision force between the arc-shaped scraper and the hard impurities, thereby avoiding damage to the coating on the inner wall of the furnace. The movable piston is pushed to move by the movable rod to squeeze the liquid in the liquid storage chamber. At this time, the liquid enters the blocking chamber through the connecting pipe, pushing the blocking piston to move so that the through hole is aligned with the flow channel on the connecting rod. At this time, the cleaning liquid enters the oblique nozzle through the flow channel on the connecting rod and is directly sprayed to the place where the arc-shaped scraper and the hard impurities contact, thereby further softening and diluting the hard impurities alone. The force sprayed by the oblique nozzle will impact the softened part of the surface of the hard impurities and rush to the unsoftened inner part of the hard impurities, further softening the impurities and making it easier for the arc-shaped scraper to shovel them away, thereby improving the cleaning efficiency.

[0018] (3) This scheme uses a brush to scrub the scraped parts. When the cleaning liquid flows in the main pipe, the water flow will impact the rotating ball. When the rotating ball rotates, the arc-shaped protrusions on its outer surface will continuously impact and push the push rod to move. When the push rod moves, it will squeeze spring 2 and push the brush outward through the inner rod. At this time, the brush squeezes the furnace and produces a bending deformation. The bristles of the brush will stretch outward when bent, thereby creating gaps, allowing impurities on the brush to fall off, preventing the brush from carrying the cleaned impurities all the time, thereby affecting the scrubbing effect. At the same time, the pressure between the brush and the furnace surface changes, which can also improve the cleaning effect. The wiping sponge is used for the last step of wiping to remove residual moisture and tiny particles in the furnace to ensure that the furnace surface is clean and smooth.

[0019] (4) This solution uses an ultrasonic probe to detect the condition of the inner wall of the furnace to evaluate the integrity of the coating. If there is a depression or bulge somewhere on the inner wall of the furnace, the surface of the furnace is damaged or there is residue from cleaning. At this time, the electric push rod 2 is started to drive the seal box and the seal sponge to move and contact the furnace, leaving a circular color mark to circle the problematic area for easy maintenance by the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 A half-section schematic diagram of the internal structure of the present invention; Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle; Figure 4 It is a schematic diagram of the local structure of the present invention; Figure 5 It is a schematic diagram of the structure of the scraping member of the present invention; Figure 6 It is a schematic diagram of the scraping member structure of the present invention; Figure 7 A schematic diagram of the internal structure of a scraping member of the present invention in half section; Figure 8 It is a schematic diagram of the internal structure of the scraping member of the present invention in a side section; Fig. 9 It is a schematic diagram of the disassembly of the structure of the brush washing part of the present invention; Fig.10 It is a schematic diagram of the disassembly of the detection rod structure of the present invention.

[0021] Description of the numbers in the figure: 1. Mounting plate; 101. Electric push rod 1; 102. Infusion tube; 2. Main tube; 201. Water pump; 202. Gear ring; 203. Motor; 204. Gear; 3. Multi-head nozzle; 4. Scraper; 401. Connecting rod; 402. Mounting seat; 403. Curved scraper; 404. Liquid storage chamber; 405. Moving rod; 406. Spring 1; 407. Moving piston; 408. Connecting tube; 409. Blocking chamber; 410. Blocking piston; 411. 1. Oblique nozzle; 412. Through hole; 5. Brushing part; 501. Sleeve; 502. Rotating ball; 503. Arc-shaped protrusion; 504. Push rod; 505. Inner rod; 506. Sealing piston; 507. Second spring; 508. Brush; 6. Wiping sponge; 601. Fixed rod; 602. Fixed ring; 7. Detection rod; 701. Mounting rod; 702. Ultrasonic probe; 703. Second electric push rod; 704. Seal box; 705. Seal sponge. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0023] Embodiment 1: See also Figure 1 , Figure 2 and Figure 4 A vacuum consumable arc furnace with a furnace cleaning function comprises a mounting plate 1, a scraping member 4 and a brushing member 5. A liquid infusion pipe 102 is fixedly connected to the inner cavity of the mounting plate 1. The lower end of the liquid infusion pipe 102 is connected to a main pipe 2 through a rotating joint. A water pump 201 is installed on the main pipe 2. A gear ring 202 is fixedly connected to the outer surface of the main pipe 2. A gear 204 is meshed on the outer surface of the gear ring 202. A furnace cover is installed on the outer surface of the mounting plate 1, and a furnace body is installed on the outer surface of the main pipe 2.

[0024] Specifically, two electric push rods 101 are symmetrically fixedly connected to the inner cavity of the furnace cover, the lower end of the electric push rod 101 is fixedly connected to the mounting plate 1, the lower end of the main pipe 2 is connected to the multi-head nozzle 3, the lower surface of the mounting plate 1 is fixedly connected to the motor 203, the output shaft end of the motor 203 is fixedly connected to the gear 204, and the main pipe 2 is located in the furnace of the furnace body.

[0025] Furthermore, the mounting plate 1 provides basic support for the entire device and is fixedly installed in the furnace cover through an electric push rod 101. The electric push rod 101 is used to drive the entire cleaning device to move up and down in the furnace body to meet the cleaning needs at different heights in the furnace body. After cleaning, it moves back to the furnace cover.

[0026] The main pipe 2 is rotatably sealedly connected to the lower end of the infusion pipe 102 via a swivel joint. The infusion pipe 102 is connected to an external cleaning solution for delivering the cleaning solution to the main pipe 2. The selection of the cleaning solution is mainly based on the composition of the residue, and an appropriate acidic or alkaline solution is selected. For example, for aluminum oxide residues, sodium hydroxide solution can be used, and for iron oxides such as rust, hydrochloric acid can be used. Certain organic solvents can soften or dissolve specific types of residues.

[0027] The main pipe 2 serves as the main liquid transmission channel, and the motor 203 drives the gear 204 to rotate. The water pump 201 is used to extract the cleaning solution and distribute it to the multi-head nozzle 3. The multi-head nozzle 3 is used to evenly spray the cleaning liquid to soften the impurities and post-processing residues in the furnace. The rotation of the main pipe 2 ensures that the liquid can be evenly distributed on the entire inner wall of the furnace. The multi-head nozzle 3 allows the liquid to be sprayed from multiple directions at the same time, increasing the coverage area and improving the cleaning efficiency.

[0028] Embodiment 2: See also Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 8 A vacuum consumable arc furnace with a furnace cleaning function also includes a scraper 4, including two connecting rods 401 symmetrically fixedly connected to the outer surface of the main pipe 2, one end of the connecting rod 401 is fixedly connected to a mounting seat 402, an arc-shaped scraper 403 is movably connected to the inner cavity of the mounting seat 402, a liquid storage chamber 404 is provided in the inner cavity of the mounting seat 402, a movable piston 407 is slidably connected to the inner cavity of the liquid storage chamber 404, one side of the arc-shaped scraper 403 is symmetrically fixedly connected with two movable rods 405, the movable rod 405 passes through the mounting seat 402 and is fixedly connected to the movable piston 407, a flow channel is provided in the inner cavity of the connecting rod 401 and is connected to an oblique nozzle 411, the flow channel provided in the connecting rod 401 is connected to the main pipe 2, a blocking chamber 409 is provided in the inner cavity of the connecting rod 401, and a blocking piston 410 is movably connected to the inner cavity of the blocking chamber 409.

[0029] Specifically, the arc scraper 403 abuts against the furnace of the furnace body, the arc scraper 403 moves in the mounting seat 402, the moving piston 407 moves in the inner cavity of the liquid storage chamber 404, the moving piston 407 and the liquid storage chamber 404 are filled with sealing liquid, and a spring 406 is sleeved on the outer surface of the moving rod 405, one end of the spring 406 is fixedly connected to the outer surface of the arc scraper 403, and the other end of the spring 406 is fixedly connected to the outer surface of the mounting seat 402. A through hole 412 is opened on the blocking piston 410, and the through hole 412 has the same diameter as the flow channel in the connecting rod 401. The blocking piston 410 moves in the blocking chamber 409, and the blocking chamber 409 and the liquid storage chamber 404 are connected through a connecting pipe 408. The inclined nozzle 411 is inclined and faces the blade head of the arc scraper 403.

[0030] Furthermore, the scraper 4 is the first step of cleaning. The rotation of the main pipe 2 drives the arc-shaped scraper 403 to rotate, scraping off various residual impurities on the inner wall of the furnace. Under normal circumstances, the arc-shaped scraper 403 can easily produce conventional softened impurities.

[0031] When the arc blade 403 contacts harder or larger impurities, the arc blade 403 will squeeze the spring 406, which will reduce the collision force between the arc blade 403 and the hard impurities to avoid damaging the coating on the inner wall of the furnace, and push the moving piston 407 to move through the moving rod 405 to squeeze the sealing liquid in the liquid storage chamber 404. At this time, the sealing liquid enters the blocking chamber 409 through the connecting pipe 408. The sealing liquid plays a key role in transmitting pressure. Multiple pistons fit tightly against the inner wall to ensure that the liquid will not leak. The best choice for the sealing liquid is silicone oil, hydraulic oil, a mixture of deionized water and ethylene glycol, etc., which have good chemical stability, high and low temperature resistance and low volatility, and are suitable for long-term use.

[0032] The sealing liquid pushes the blocking piston 410 to move, so that the through hole 412 is aligned with the flow channel on the connecting rod 401. At this time, the cleaning liquid enters the inclined nozzle 411 through the flow channel on the connecting rod 401, and is directly sprayed to the place where the arc scraper 403 and the hard impurities are in contact, so as to further soften and dilute the hard impurities alone. The force sprayed by the inclined nozzle 411 will impact the softened part of the surface of the hard impurities and rush to the unsoftened inside of the hard impurities, so as to further soften the impurities and facilitate the arc scraper 403 to shovel them away.

[0033] On the contrary, under normal circumstances, when the arc-shaped scraper 403 is not blocked by hard and large-particle impurities, the blocking piston 410 blocks the flow channel on the connecting rod 401 in situ, and the spring 1 406 serves as an elastic connecting part to help the arc-shaped scraper 403 automatically reset without being subjected to additional pressure.

[0034] Embodiment 3: See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Fig. 9 and Fig.10 A vacuum consumable arc furnace with a furnace cleaning function also includes a brushing part 5, including two sleeves 501 symmetrically fixed and connected to the outer surface of the main pipe 2, the sleeve 501 is rotatably connected to the inner cavity of one end of the main pipe 2, and a rotating ball 502 is rotatably connected, an inner rod 505 is inserted into the inner cavity of the sleeve 501, and a sealing piston 506 is fixedly connected to the outer surface of the inner rod 505, and the inner rod 505 is located at one end inside the sleeve 501 and fixedly connected to a push rod 504, and the inner rod 505 is located at one end outside the sleeve 501 and fixedly connected to a brush 508, a wiping sponge 6 is installed on the outer surface of the main pipe 2, and a detection rod 7 is installed on one end of the outer surface of the main pipe 2.

[0035] Specifically, the inner rod 505 and the sealing piston 506 move in the inner cavity of the sleeve 501, and a spring 2 507 is sleeved on the outer surface of the inner rod 505. One end of the spring 2 507 is fixedly connected to the outer surface of the sealing piston 506, and the other end of the spring 2 507 is fixedly connected to the inner cavity wall of the sleeve 501. A plurality of arc-shaped protrusions 503 are evenly arranged on the outer surface of the rotating ball 502. The end of the push rod 504 away from the inner rod 505 is hemispherical and abuts against the outer surface of the rotating ball 502. Half of the rotating ball 502 is located inside the main pipe 2, and the other half is located inside the sleeve 501. The outer surface of the brush 508 abuts against the furnace of the furnace body.

[0036] The wiping sponge 6 is annular and abuts against the furnace of the furnace body. A fixing ring 602 is fixedly connected to the inner side of the wiping sponge 6 . Four fixing rods 601 are evenly fixedly connected to the inner cavity of the fixing ring 602 . The other end of the fixing rod 601 is fixedly connected to the main pipe 2 .

[0037] The detection rod 7 includes a mounting rod 701 fixedly connected to the outer surface of the main pipe 2, an ultrasonic probe 702 is mounted on one end of the mounting rod 701, the outer surface of the ultrasonic probe 702 is surrounded by a ring-shaped seal box 704, one side of the seal box 704 is symmetrically fixedly connected to two electric push rods 703, the other end of the electric push rods 703 is fixedly connected to the main pipe 2, and the inner cavity of the seal box 704 is fixedly connected to a seal sponge 705.

[0038] Furthermore, the scraped parts are scrubbed synchronously by the brush 508. The brush 508 is made of elastic fiber material and has a certain elasticity. It can rebound quickly after deformation. When the cleaning liquid flows in the main pipe 2, the water flow will impact the rotating ball 502 to rotate. When the rotating ball 502 rotates, the arc-shaped protrusion 503 on its outer surface will continuously impact and push the push rod 504 to move. When the push rod 504 moves, it will squeeze the spring 2 507 and push the brush 508 outward through the inner rod 505. At this time, the brush 508 squeezes the furnace and produces a bending deformation. The hairs of the brush 508 will be stretched outward when bent, thereby producing a gap, so that impurities on the brush 508 fall off, avoiding the brush 508 from carrying the cleaned impurities all the time, thereby affecting the scrubbing effect.

[0039] When the arc-shaped protrusion 503 rotates away from the push rod 504, the other position on the rotating ball 502 contacts the push rod 504, and the push rod 504 is driven back to its original position by the elastic force of the spring 2 507 itself. At this time, the brush 508 loses the squeezing force and returns to its original state, forming a continuous reciprocating motion, and continuing the cleaning operation of the brush 508.

[0040] When the inner rod 505 moves, the sealing piston 506 ensures the sealing performance to prevent the cleaning liquid from leaking out of the sleeve 501. At the same time, the pressure between the brush 508 and the furnace surface changes, which can also improve the cleaning effect.

[0041] The wiping sponge 6 is used for the last step of wiping to remove the residual moisture and tiny particles in the furnace to ensure that the surface of the furnace is clean and smooth. The wiping sponge 6 is in a ring shape to increase the contact area with the furnace so as to wipe it clean better.

[0042] After cleaning is completed, the ultrasonic probe 702 is used to detect the state of the inner wall of the furnace to evaluate the integrity of the coating. If there is a depression or bulge somewhere on the inner wall of the furnace, the surface of the furnace is damaged or there is residue left after cleaning. At this time, the electric push rod 2 703 is started to drive the seal box 704 and the seal sponge 705 to move and contact the furnace, leaving a circular color mark to circle the problematic area for easy inspection by the operator. The seal sponge 705 is made of elastic porous material and absorbs paint with conspicuous colors (such as red, blue and other conspicuous colors) to help operators better identify.

[0043] Working principle: During the use of the device, the electric push rod 101 is used to drive the entire cleaning device to move up and down in the furnace body to meet the cleaning needs at different heights in the furnace body. The main pipe 2 is connected to the lower end of the infusion pipe 102 by rotating and sealing through a rotating joint. The starting motor 203 drives the gear 204 to rotate and drives the gear ring 202 to rotate, and drives the main pipe 2 to rotate, thereby driving the multiple cleaning components on the main pipe 2 to rotate, and performing all-round cleaning on the furnace body. After each layer of cleaning is completed, the electric push rod 101 drives the cleaning component to continue to move downward and drive it to move to the next layer. The main pipe 2 extracts the cleaning solution through the water pump 201, and sprays it to the furnace through the multi-head nozzle 3 in advance to soften the impurities and residues after processing in the furnace. The rotation of the main pipe 2 ensures that the liquid can be evenly distributed on the entire inner wall of the furnace. The multi-head nozzle 3 sprays liquid from multiple directions at the same time to increase the coverage area and improve the cleaning efficiency.

[0044] The scraper 4 is the first step of cleaning. The main pipe 2 rotates to drive the arc scraper 403 to rotate, scraping various residual impurities on the inner wall of the furnace. When the arc scraper 403 contacts hard or large impurities, the arc scraper 403 will squeeze the spring 1 406, and the spring 1 406 will reduce the collision force between the arc scraper 403 and the hard impurities to avoid damaging the coating on the inner wall of the furnace. The movable piston 407 is pushed to move by the movable rod 405 to squeeze the liquid in the liquid storage chamber 404. At this time, the liquid passes through the connecting pipe 408. Enter the blocking chamber 409 and push the blocking piston 410 to move so that the through hole 412 is aligned with the flow channel on the connecting rod 401. At this time, the cleaning liquid enters the inclined nozzle 411 through the flow channel on the connecting rod 401 and is directly sprayed to the place where the arc-shaped scraper 403 and the hard impurities are in contact, so as to further soften and dilute the hard impurities alone. The force sprayed by the inclined nozzle 411 will impact the softened part of the surface of the hard impurities and rush to the unsoftened interior of the hard impurities, so as to further soften the impurities and facilitate the arc-shaped scraper 403 to shovel them away.

[0045] After the arc-shaped scraper 403 first scrapes away the impurities, the scraped parts are then scrubbed by the brush 508. When the cleaning liquid flows in the main pipe 2, it impacts the rotating ball 502 to rotate. When the rotating ball 502 rotates, the arc-shaped protrusion 503 on its outer surface will continuously impact and push the push rod 504 to move. When the push rod 504 moves, it will squeeze the spring 2 507 and push the brush 508 outward through the inner rod 505. At this time, the brush 508 squeezes the furnace chamber and generates a bending deformation. When the hair of the brush 508 is bent, it will stretch outward, thereby generating a gap, so that the impurities on the brush 508 fall off, and the inner rod 505 moves. At the same time, the sealing piston 506 ensures the sealing performance and prevents the cleaning liquid from leaking out of the sleeve 501. The wiping sponge 6 is used for the last step of wiping to remove the residual moisture and tiny particles in the furnace to ensure that the furnace surface is clean and smooth. After cleaning, the ultrasonic probe 702 is used to detect the state of the inner wall of the furnace to evaluate the coating integrity. If there is a depression or protrusion somewhere on the inner wall of the furnace, the surface of the furnace is damaged or there is cleaning residue. At this time, the electric push rod 703 is started to drive the seal box 704 and the seal sponge 705 to move and contact the furnace, leaving a circular color mark to circle the problematic area for the convenience of operator maintenance.

[0046] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0047] In addition, it should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that those skilled in the art can understand.

Claims

1. A vacuum consumable arc furnace with a furnace cleaning function, characterized in that: include: A mounting plate (1), wherein an inner cavity of the mounting plate (1) is fixedly connected to a liquid infusion tube (102), the lower end of the liquid infusion tube (102) is connected to a main pipe (2) via a rotating joint, a water pump (201) is mounted on the main pipe (2), a gear ring (202) is fixedly connected to the outer surface of the main pipe (2), a gear (204) is meshed on the outer surface of the gear ring (202), a furnace cover is mounted on the outer surface of the mounting plate (1), and a furnace body is mounted on the outer surface of the main pipe (2); The scraper (4) comprises two connecting rods (401) symmetrically fixedly connected to the outer surface of the main pipe (2), one end of the connecting rod (401) is fixedly connected to a mounting seat (402), the inner cavity of the mounting seat (402) is movably connected to an arc-shaped scraper (403), the inner cavity of the mounting seat (402) is provided with a liquid storage chamber (404), the inner cavity of the liquid storage chamber (404) is slidably connected to a movable piston (407), one side of the arc-shaped scraper (403) is symmetrically fixedly connected to two movable rods (405), the movable rod (405) passes through the mounting seat (402) and is fixedly connected to the movable piston (407), the inner cavity of the connecting rod (401) is provided with a flow channel connected to an oblique nozzle (411), the flow channel provided in the connecting rod (401) is connected to the main pipe (2), the inner cavity of the connecting rod (401) is provided with a blocking chamber (409), and the inner cavity of the blocking chamber (409) is movably connected to a blocking piston (410); The scrubbing member (5) comprises two sleeves (501) symmetrically fixedly connected to the outer surface of the main pipe (2); a rotating ball (502) is rotatably connected to the inner cavity of one end of the sleeve (501) close to the main pipe (2); an inner rod (505) is inserted into the inner cavity of the sleeve (501); a sealing piston (506) is fixedly connected to the outer surface of the inner rod (505); a push rod (504) is fixedly connected to one end of the inner rod (505) located inside the sleeve (501); a brush (508) is fixedly connected to one end of the inner rod (505) located outside the sleeve (501); a wiping sponge (6) is installed on the outer surface of the main pipe (2); and a detection rod (7) is installed on one end of the outer surface of the main pipe (2).

2. A vacuum consumable arc furnace with a furnace cleaning function according to claim 1, characterized in that: Two electric push rods (101) are symmetrically fixedly connected to the inner cavity of the furnace cover; the lower ends of the electric push rods (101) are fixedly connected to the mounting plate (1); the lower end of the main pipe (2) is connected to a multi-head nozzle (3); the lower surface of the mounting plate (1) is fixedly connected to a motor (203); the output shaft end of the motor (203) is fixedly connected to a gear (204); and the main pipe (2) is located in the furnace of the furnace body.

3. The vacuum consumable arc furnace with a furnace cleaning function according to claim 1, characterized in that: The wiping sponge (6) is annular and abuts against the furnace of the furnace body. A fixing ring (602) is fixedly connected to the inside of the wiping sponge (6). Four fixing rods (601) are evenly fixedly connected to the inner cavity of the fixing ring (602). The other end of the fixing rod (601) is fixedly connected to the main pipe (2).

4. The vacuum consumable arc furnace with a furnace cleaning function according to claim 1, characterized in that: The arc-shaped scraper (403) abuts against the furnace of the furnace body, the arc-shaped scraper (403) moves in the mounting seat (402), the movable piston (407) moves in the inner cavity of the liquid storage chamber (404), and a sealing liquid is filled between the movable piston (407) and the liquid storage chamber (404).

5. The vacuum consumable arc furnace with a furnace cleaning function according to claim 1, characterized in that: The outer surface of the moving rod (405) is sleeved with a spring 1 (406), one end of the spring 1 (406) is fixedly connected to the outer surface of the arc-shaped scraper (403), and the other end of the spring 1 (406) is fixedly connected to the outer surface of the mounting seat (402).

6. The vacuum consumable arc furnace with a furnace cleaning function according to claim 1, characterized in that: The blocking piston (410) is provided with a through hole (412), the through hole (412) having the same diameter as the flow channel in the connecting rod (401), the blocking piston (410) moves in the blocking chamber (409), the blocking chamber (409) and the liquid storage chamber (404) are connected via a connecting pipe (408), and the inclined nozzle (411) is arranged at an angle and faces the blade head of the arc-shaped scraper (403).

7. The vacuum consumable arc furnace with a furnace cleaning function according to claim 1, characterized in that: The inner rod (505) and the sealing piston (506) move in the inner cavity of the sleeve (501); a second spring (507) is sleeved on the outer surface of the inner rod (505); one end of the second spring (507) is fixedly connected to the outer surface of the sealing piston (506); and the other end of the second spring (507) is fixedly connected to the inner cavity wall of the sleeve (501).

8. The vacuum consumable arc furnace with a furnace cleaning function according to claim 1, characterized in that: The outer surface of the rotating ball (502) is evenly provided with a plurality of arc-shaped protrusions (503); the end of the pushing rod (504) away from the inner rod (505) is hemispherical and abuts against the outer surface of the rotating ball (502); half of the rotating ball (502) is located inside the main pipe (2) and the other half is located inside the sleeve (501); and the outer surface of the brush (508) abuts against the furnace of the furnace body.

9. The vacuum consumable arc furnace with a furnace cleaning function according to claim 1, characterized in that: The detection rod (7) comprises a mounting rod (701) fixedly connected to the outer surface of the main pipe (2), an ultrasonic probe (702) being mounted on one end of the mounting rod (701), and an annular seal box (704) is surrounded on the outer surface of the ultrasonic probe (702).

10. The vacuum consumable arc furnace with furnace cleaning function according to claim 9, characterized in that: One side of the seal box (704) is symmetrically and fixedly connected to two electric push rods (703); the other end of the electric push rods (703) is fixedly connected to the main pipe (2); and the inner cavity of the seal box (704) is fixedly connected to a seal sponge (705).

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