All-hydrogen bell type annealing furnace for tinplate

Abstract

The invention relates to the technical field of annealing furnaces, in particular to an all-hydrogen cover type annealing furnace for tinplate, which comprises a base, an outer cover is mounted at the upper end of the base, a gas pipeline is mounted on the side surface of the outer cover, an inner cover is arranged on the inner side of the outer cover, and the inner cover is mounted at the upper end of the base; a plurality of separation discs are installed at the upper end of the base from top to bottom in the inner cover at equal intervals, an annular air guide plate is fixedly installed on the inner side wall of the inner cover, every two vertically adjacent separation discs are connected through a supporting rod, the lowermost separation disc is connected with the base through a supporting rod, and an air guide assembly is installed on each separation disc. The device has the beneficial effects that the separation disc and the gas guide assembly are spliced firstly, then coiled materials and the like are sequentially placed on the supporting tables, one coiled material is placed on each supporting table, then the separation disc is sequentially covered with the inner cover and the outer cover, at the moment, the inner cover is heated, meanwhile, air in the inner cover is exhausted, and then hydrogen is introduced.

Description

Technical Field

[0001] The invention relates to the technical field of annealing furnaces, in particular to a full hydrogen bell-type annealing furnace for tinplate. Background Art

[0002] Tinplate, commonly known as tinplate, refers to a steel plate with a thin layer of metal tin on the surface. Tinplate is made by rolling low carbon steel into a steel plate about 2mm thick, which is processed by pickling, cold rolling, electrolytic cleaning annealing, flattening, trimming, and then cleaning, electroplating, soft melting, passivation treatment, and oiling before being sheared into a finished tinplate plate. The tin used for tinplate is high-purity tin. In the process of processing tinplate, a full hydrogen hood annealing furnace is required. The working principle of the full hydrogen hood annealing furnace is based on the heat treatment process under a full hydrogen protective atmosphere. The equipment uses strong convection pure hydrogen as the protective gas in the annealing process, so that the rolled steel coil completes recrystallization annealing under a protective atmosphere, thereby eliminating the pressure formed during the rolling process and improving the stamping performance of the steel coil.

[0003] However, the existing full hydrogen hood annealing furnace has certain defects during use. During the heating process, although a circulation fan is installed at the bottom as a driving force for gas flow, such a simple fan cannot control the gas flow inside the furnace, so that the heat and hydrogen in the furnace are blown upward from the bottom of the inner hood along its inner wall, so that the heat and hydrogen gather at the top of the furnace and cannot form a good flow, which easily causes the outer side of the steel to be well heated, while the inner side cannot be heated, affecting the uniform heating; and the existing steel is mostly directly stacked together during the heating process. When processing some thin plates, it is easy to cause adhesion between the upper and lower coils, affecting the quality of the coils. Summary of the invention

[0004] The object of the present invention is to provide a full hydrogen bell annealing furnace for tinplate to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a full hydrogen bell-type annealing furnace for tinplate, comprising a base, an outer cover is installed on the upper end of the base, a gas pipeline is installed on the side of the outer cover, an inner cover is arranged on the inner side of the outer cover, and the inner cover is installed on the upper end of the base; The upper end of the base is provided with a plurality of partition plates equidistantly installed from top to bottom in the inner cover, an annular air guide plate is fixedly installed on the inner side wall of the inner cover, two upper and lower adjacent partition plates are connected by a support rod, the lowest partition plate is connected to the base by a support rod, an air guide assembly is installed on each partition plate, a plurality of support platforms are installed in a ring shape on each partition plate, the support platforms and the partition plates are connected by a locking mechanism, the upper end of the base is symmetrically provided with a circular boss protruding upward, the upper end of the circular boss is recessed downward to form a circular groove, a driving motor is fixedly installed on the lower end of the circular groove, a rotating shaft is fixedly connected to the upper end of the output shaft of the driving motor, and a fan blade is fixedly installed on the upper end of the rotating shaft.

[0006] Preferably, the upper end of the partition plate is provided with a plurality of slots in a circular array, and the lower end of the partition plate is fixed with a plurality of support rods in a circular array, the number of the support rods is the same as the number of the slots, the support rods at the lower end of the upper partition plate are plugged into the slots at the upper end of the lower partition plate, and the support rods at the lower end of the lowest partition plate are plugged into the circular boss at the upper end of the base.

[0007] Preferably, a circular hole is formed through the upper end of the separation plate downward, and the air guide assembly includes an annular joint fixedly installed on the upper end of the circular hole, an air guide duct is fixedly connected in the circular hole, the lower end of the air guide duct passes through the circular hole downward and extends to the outside, and the upper end of the air guide duct is fixedly connected to the lower end of the annular joint; The air guide duct at the lower end of the upper partition plate is plugged into the annular joint at the upper end of the lower partition plate, a support cylinder is fixedly installed at the upper end of the circular groove, the upper end of the support cylinder abuts against the lower end of the lowest partition plate, and a conical cover is fixedly sleeved at the lower end of the air guide duct at the lower end of the lowest partition plate, and both the air guide duct and the conical cover pass downward through the support cylinder and extend into the circular groove; A plurality of branch pipes are fixedly plugged into the side surface of the circular hole in a circular array, one end of the branch pipe is connected to the support platform, and the other end of the branch pipe is plugged into the side surface of the air guide pipe.

[0008] Preferably, the separator plate is provided with a plurality of U-shaped connecting grooves in a circular array, the inner sides of the U-shaped connecting grooves are symmetrically provided with docking grooves, the support platform is plugged into the U-shaped connecting grooves, the side surfaces of the support platform are symmetrically fixedly connected with docking blocks, the side surfaces of the docking blocks are provided with card slots, and the docking blocks are plugged into the docking grooves.

[0009] Preferably, a circular cavity is provided on the inner side of the support platform, and a plurality of fan-shaped blocks are fixedly connected in a circular array in the circular cavity. A circular groove is provided on the upper end of the support platform, and a plurality of fan-shaped air induction grooves are provided in a circular array on the upper end of the support platform, and the fan-shaped air induction grooves are connected with the circular groove. An air outlet is provided downwardly through the bottom of the circular groove, and the lower end of the air outlet is connected with the circular cavity. A plurality of through holes are provided in a circular array on the upper end of the support platform, and the lower end of the through hole is connected with the circular cavity. A mounting hole is provided on the side of the support platform, and one end of the branch pipe is plugged into the mounting hole.

[0010] Preferably, a contraction groove is provided on the side of the docking groove, and the locking mechanism is installed in the contraction groove. The locking mechanism includes a locking block slidably installed in the contraction groove. The side of the separating plate is provided with a plurality of notches in a ring array, and a pull rod is movably inserted into the side of the notch. One end of the pull rod extends into the contraction groove and is fixedly connected to one end of the locking block, and the other end of the pull rod is fixedly connected to a pull ring. A locking spring is sleeved on the end of the pull rod extending into the contraction groove, and both ends of the locking spring are respectively abutted against the locking block and the contraction groove, and the locking block is engaged with the slot.

[0011] Preferably, a plurality of L-shaped air guide grooves are provided in a circular array at the upper end of the circular boss, one end of the L-shaped air guide groove is connected with the circular groove through an air inlet, a lifting groove is provided in the L-shaped air guide groove, an annular mounting groove is provided in the circular groove, an annular limiting groove is provided on the inner side wall of the annular mounting groove, a filtering mechanism is installed in each L-shaped air guide groove, and a shaking transmission mechanism is installed in the circular groove; The filtering mechanism includes an L-shaped bracket installed in a lifting groove for sliding up and down, and rectangular grooves are symmetrically opened on the side of the L-shaped bracket. A high-temperature resistant filter screen is fixedly installed in the rectangular groove. A plurality of elastic sheets are equidistantly installed on the upper end of the L-shaped bracket, and the upper end of the elastic sheet abuts against the upper end of the lifting groove. A transmission block is fixedly connected to the side of the L-shaped bracket close to the rotating shaft, and an upper extrusion block is fixedly connected to the lower end of the transmission block.

[0012] Preferably, strip plates are symmetrically fixedly connected to both sides of the L-shaped bracket, sliding grooves are symmetrically opened in the lifting groove, and the strip plates are slidably connected to the sliding grooves up and down.

[0013] Preferably, the shaking transmission mechanism includes an inner gear ring rotatably mounted in an annular mounting groove, an annular limit plate is fixedly sleeved on the side of the inner gear ring, a plurality of lower extrusion blocks are fixedly connected to the upper end of the inner gear ring in an annular array, a concave block is fixedly connected to the bottom of the circular groove, the upper end of the concave block is rotatably connected to a transmission gear through a circular shaft, the transmission gear is arranged on the inner side of the inner gear ring, and the transmission gear is meshed with the inner gear ring.

[0014] Preferably, the annular limiting plate is rotatably connected to the annular limiting groove, the transmission gear is fixedly connected to the circular shaft, the circular shaft and the concave block are rotatably connected via a bearing, and a driving gear is fixedly sleeved on the lower end of the rotating shaft, and the driving gear is meshed with the transmission gear.

[0015] Compared with the prior art, the invention has the following advantages: 1. First, assemble the separation plate and the air guide assembly, and then place the coils on the support table in sequence. Place a coil on each support table, and then cover the inner cover and the outer cover on the separation plate in sequence. At this time, heat the inner cover, and exhaust the air from the inner cover first, and then introduce hydrogen; The fan blades rotate to blow air into the conical cover, and the blown wind drives the hot air and hydrogen to flow into the air guide component, and then flows into the circular cavity along the branch pipe, and finally flows upward along the through holes and air outlets at the upper end of the circular cavity. The hot air and hydrogen flowing out of the air outlets flow along the fan-shaped air induction grooves, and through the cooperation of the through holes, air outlets and fan-shaped air induction grooves, the coiled materials on the upper end of the support table can be evenly heated, and the hydrogen can be better distributed around the coiled materials.

[0016] 2. The hot air and hydrogen flow around the coil and then flow downward along the side wall of the inner cover, and then flow into the L-shaped air guide groove. After being filtered by the high-temperature resistant filter, they flow into the circular groove through the air inlet, and then the filtered hot air and hydrogen are blown upward through the fan blades, thus circulating.

[0017] 3. The circulating hot air and hydrogen are filtered through the high-temperature resistant filter to prevent some impurities from clogging the air guide components, the through holes on the support platform, the air outlet, etc., and at the same time, it can prevent impurities from adhering to the coil.

[0018] 4. When the shaft rotates, it drives the shaking transmission machine to rotate. The shaking transmission machine drives the filter mechanism to shake up and down, shaking off the impurities filtered out from the side of the high-temperature resistant filter in the filter mechanism to prevent the impurities from clogging the mesh of the high-temperature resistant filter, so that the high-temperature resistant filter can continue to perform filtering operations.

[0019] 5. Each partition plate is detachably connected to facilitate subsequent disassembly, cleaning, repair or replacement of the partition plates. The installation and disassembly of the support table is simple and convenient through the provided locking mechanism, which facilitates the subsequent maintenance, cleaning or replacement of the support table. The partition plate and the support table are detachably connected. When a component is damaged, only the damaged component needs to be replaced, which greatly saves the cost of maintenance and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of the structure of the full hydrogen bell-type annealing furnace of the present invention; Figure 2 It is a cross-sectional view of the structure of the full hydrogen bell-type annealing furnace of the present invention; Figure 3 This is a schematic diagram of the structure of the separation plate, support rod and support platform of the present invention; Figure 4 This is a cross-sectional view of the separation plate structure of the present invention; Figure 5 for Figure 4 A schematic diagram of the structure enlargement in the middle; Figure 6 It is a cross-sectional view of the structure of the separation plate, the support platform and the air guide assembly of the present invention; Figure 7 It is a cross-sectional view of the support platform structure of the present invention; Figure 8 This is an exploded view of the separation plate, support platform and locking mechanism structure of the present invention; Fig. 9 It is a cross-sectional view of the base structure of the present invention; Fig.10 It is an exploded view of the base, conical cover, shaking transmission mechanism and filtering mechanism of the present invention.

[0021] In the figure: 1, base; 11, outer cover; 12, air duct; 13, inner cover; 14, annular air guide plate; 15, circular groove; 16, L-shaped air guide groove; 17, lifting groove; 171, slide groove; 18, annular installation groove; 19, annular limit groove; 2, partition plate; 21, slot; 22, round hole; 23, U-shaped connecting groove; 24, docking groove; 25, contraction groove; 26, support rod; 27, annular docking joint; 28, air guide duct; 29, branch duct; 3, support platform; 31, circular cavity; 3 2. Fan-shaped block; 33. Fan-shaped air duct; 34. Through hole; 35. Docking block; 36. Slot; 4. Locking block; 41. Pull rod; 42. Locking spring; 5. Driving motor; 51. Rotating shaft; 52. Driving gear; 53. Fan blade; 54. Concave block; 55. Transmission gear; 6. Support cylinder; 61. Conical cover; 7. Internal gear ring; 71. Annular limit plate; 72. Lower extrusion block; 8. L-shaped bracket; 81. High temperature resistant filter; 82. Elastic sheet; 83. Transmission block; 84. Upper extrusion block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figures 1 to 10The present invention provides a technical solution: a full hydrogen bell-type annealing furnace for tinplate, comprising a base 1, an outer cover 11 is installed on the upper end of the base 1, a gas pipeline 12 is installed on the side of the outer cover 11, an inner cover 13 is arranged on the inner side of the outer cover 11, and the inner cover 13 is installed on the upper end of the base 1; The upper end of the base 1 is equidistantly provided with a plurality of partition plates 2 from top to bottom in the inner cover 13, and an annular air guide plate 14 is fixedly provided on the inner side wall of the inner cover 13, and two adjacent partition plates 2 are connected by a support rod 26, and the lowermost partition plate 2 is connected to the base 1 by the support rod 26, and the plurality of partition plates 2 are detachably connected, and the partition plates 2 and the base 1 are also detachably connected, and an air guide component is installed on each partition plate 2, and the plurality of air guide components are sequentially docked from top to bottom, and a plurality of support platforms 3 are annularly provided on each partition plate 2, and the support platforms 3 and the partition plates 2 are connected by a locking mechanism, and a circular boss is symmetrically protruded upward at the upper end of the base 1, and the lower end of the inner cover 13 contacts the upper end of the circular boss, and the upper end of the circular boss is recessed downward to form a circular groove 15, and a driving motor 5 is fixedly installed at the lower end of the circular groove 15, and a rotating shaft 51 is fixedly connected to the upper end of the output shaft of the driving motor 5, and a fan blade 53 is fixedly installed at the upper end of the rotating shaft 51.

[0024] The outer cover 11 and the base 1 are both in the shape of an "8", and can also be set to a circle. The difference is that two inner covers 13 are symmetrically installed in the "8"-shaped outer cover 11, and one inner cover 13 is installed in the circular outer cover 11; when the outer cover 11 is circular, the base 1 is also changed to a circle or rectangle accordingly, and at this time, only a circular groove 15 starts at the upper end of the base 1; when the outer cover 11 and the base 1 are both in the shape of an "8", there are two processable cavities in the furnace, and when the outer cover 11 and the base 1 are circular, there is one processable cavity in the furnace.

[0025] See also Figure 2 and Figure 3 The upper end of the separator plate 2 is provided with a plurality of slots 21 in a circular array, and the lower end of the separator plate 2 is fixedly provided with a plurality of support rods 26 in a circular array. The number of the support rods 26 is the same as the number of the slots 21. The support rods 26 at the lower end of the upper separator plate 2 are plugged into the slots 21 at the upper end of the lower separator plate 2, and the support rods 26 at the lower end of the lowest separator plate 2 are plugged into the circular boss at the upper end of the base 1.

[0026] See also Figures 6 to 10 A circular hole 22 is formed through the upper end of the partition plate 2, and the air guide assembly includes an annular joint 27 fixedly installed on the upper end of the circular hole 22. An air guide duct 28 is fixedly connected to the circular hole 22. The lower end of the air guide duct 28 passes through the circular hole 22 downward and extends to the outside. The upper end of the air guide duct 28 is fixedly connected to the lower end of the annular joint 27. The air guide duct 28 at the lower end of the upper separation plate 2 is plugged into the annular joint 27 at the upper end of the lower separation plate 2. The upper end of the circular groove 15 is fixedly mounted with a support tube 6. The upper end of the support tube 6 abuts against the lower end of the lowermost separation plate 2. The lower end of the air guide duct 28 at the lower end of the lowermost separation plate 2 is fixedly sleeved with a conical cover 61. The air guide duct 28 and the conical cover 61 both pass downward through the support tube 6 and extend into the circular groove 15. The upper end of the annular butt joint 27 at the upper end of the uppermost separation plate 2 is sealed by a sealing cover. The annular butt joint 27 is an annular block with an annular connecting hole at its upper end.

[0027] A plurality of branch pipes 29 are fixedly plugged into the side of the circular hole 22 in a circular array. One end of the branch pipe 29 is connected to the support platform 3 , and the other end of the branch pipe 29 is plugged into the side of the air guide pipe 28 , so that the branch pipe 29 is connected to the air guide pipe 28 .

[0028] The output shaft of the driving motor 5 drives the rotating shaft 51 to rotate, and the rotating shaft 51 drives the fan blades 53 to rotate, so as to blow air into the conical cover 61. The blown wind drives the hot air and hydrogen to flow into the air guide duct 28, so that the hot air and hydrogen flow along the lower end of the air guide duct 28 to the upper end, thereby passing through multiple air guide ducts 28 in sequence.

[0029] See also Figure 4 , Figure 5 , Figure 7 and Figure 8 A plurality of U-shaped connecting grooves 23 are provided in a circular array on the separation plate 2, and docking grooves 24 are symmetrically provided on the inner side of the U-shaped connecting grooves 23. The support platform 3 is plugged into the U-shaped connecting grooves 23. The support platform 3 is formed by two halves that are symmetrically spliced ​​together, and the support platform 3 is U-shaped. A docking block 35 is symmetrically fixedly connected to the side of the support platform 3, and a card slot 36 is provided on the side of the docking block 35, and the docking block 35 is plugged into the docking groove 24.

[0030] The supporting platform 3 can be installed on the partition plate 2 by the cooperation between the provided docking block 35 and the docking groove 24 .

[0031] A circular cavity 31 is provided on the inner side of the support platform 3, and a plurality of fan-shaped blocks 32 are fixedly connected in a circular array in the circular cavity 31. A circular groove is provided on the upper end of the support platform 3, and a plurality of fan-shaped air induction grooves 33 are provided on the upper end of the support platform 3 in a circular array. The fan-shaped air induction grooves 33 are connected with the circular groove. An air outlet is provided downwardly through the bottom of the circular groove, and the lower end of the air outlet is connected with the circular cavity 31. A plurality of through holes 34 are provided on the upper end of the support platform 3 in a circular array, and the lower end of the through hole 34 is connected with the circular cavity 31. A mounting hole is provided on the side of the support platform 3, and the mounting hole is connected with the circular cavity 31. One end of the branch pipe 29 is plugged into the mounting hole.

[0032] The hot air and hydrogen are blown into the air guide duct 28 and flow into the circular cavity 31 along the branch duct 29, and finally flow upward along the through hole 34 and the air outlet at the upper end of the circular cavity 31. The hot air and hydrogen flowing out of the air outlet flow along the fan-shaped air inlet groove 33, so that the coiled material and the like at the upper end of the support platform 3 can be evenly heated, and at the same time, the hydrogen can be better distributed around the coiled material and the like.

[0033] A contraction groove 25 is provided on the side of the docking groove 24, and a locking mechanism is installed in the contraction groove 25. The locking mechanism includes a locking block 4 slidably installed in the contraction groove 25. A plurality of notches are provided on the side of the partition plate 2 in a ring array, and a pull rod 41 is movably inserted into the side of the notch. One end of the pull rod 41 extends into the contraction groove 25 and is fixedly connected to one end of the locking block 4. The other end of the pull rod 41 is fixedly connected to a pull ring. A locking spring 42 is sleeved on the end of the pull rod 41 extending into the contraction groove 25. Both ends of the locking spring 42 are respectively abutted against the locking block 4 and the contraction groove 25, and the locking block 4 is engaged with the slot 36.

[0034] One end of the locking block 4 is a sloped surface, and the locking block 4 is engaged with the card slot 36, so that the locking block 4 locks the docking block 35, thereby enabling the support platform 3 to be firmly installed on the partition plate 2; When it is necessary to disassemble the support platform 3, pull the pull ring, and the pull ring drives the locking block 4 to be retracted into the shrinkage groove 25 through the pull rod 41, so that the locking block 4 is moved out of the groove 36, so that the two locking blocks 4 on both sides of the support platform 3 are separated from the two docking blocks 35 respectively. At this time, the support platform 3 can be pulled out along the partition plate 2 and disassembled.

[0035] During installation, the support platform 3 only needs to be inserted along the U-shaped connecting groove 23, and the docking block 35 is inserted along the docking groove 24. When the support platform 3 is installed, the locking block 4 is engaged with the slot 36 on the side of the docking block 35 under the action of the elastic force of the locking spring 42; The provided locking mechanism makes installation and disassembly of the support platform 3 simple and convenient, and facilitates maintenance, cleaning or replacement of the support platform 3 at a later stage.

[0036] See also Figure 2 , Fig. 9 and Fig.10 The upper end of the circular boss is provided with a plurality of L-shaped air guide grooves 16 in a circular array, one end of the L-shaped air guide groove 16 is connected with the circular groove 15 through the air inlet, a lifting groove 17 is provided in the L-shaped air guide groove 16, an annular mounting groove 18 is provided in the circular groove 15, and an annular limiting groove 19 is provided on the inner side wall of the annular mounting groove 18, a filtering mechanism is installed in each L-shaped air guide groove 16, and a shaking transmission mechanism is installed in the circular groove 15; The filtering mechanism includes an L-shaped bracket 8 that is slidably installed in the lifting groove 17 up and down. Rectangular grooves are symmetrically opened on the sides of the L-shaped bracket 8. A high-temperature resistant filter screen 81 is fixedly installed in the rectangular groove. A plurality of elastic sheets 82 are equidistantly installed on the upper end of the L-shaped bracket 8. The upper ends of the elastic sheets 82 abut against the upper ends of the lifting groove 17. A transmission block 83 is fixedly connected to the side of the L-shaped bracket 8 close to the rotating shaft 51, and an upper extrusion block 84 is fixedly connected to the lower end of the transmission block 83.

[0037] The two sides of the L-shaped bracket 8 are symmetrically fixedly connected with strip plates, and the lifting groove 17 is symmetrically provided with sliding grooves 171, and the strip plates are connected to the sliding grooves 171 in an up-and-down sliding manner.

[0038] The hot air and hydrogen in the inner cover 13 flow downward along the side wall of the inner cover 13, and then flow downward into the L-shaped air guide groove 16, and then flow into the circular groove 15 through the air inlet after being filtered by the high temperature resistant filter 81, and then the filtered hot air and hydrogen are blown upward by the fan blades 53, so as to circulate; When the L-shaped bracket 8 slides up and down along the lifting groove 17, the side of the L-shaped bracket 8 will not be staggered with the air inlet, that is, when the hot air and hydrogen enter the circular groove 15 along the L-shaped air guide groove 16, they must flow through the high-temperature resistant filter 81. The hot air and hydrogen filtered by the high-temperature resistant filter 81 enter the circular groove 15 along the air inlet to prevent some impurities from causing blockage of the air guide assembly, the through holes 34 on the support platform 3, the air outlet, etc., and at the same time, it can prevent impurities from adhering to the coil.

[0039] The shaking transmission mechanism includes an inner gear ring 7 rotatably mounted in an annular mounting groove 18, a side surface of the inner gear ring 7 is fixedly sleeved with an annular limit plate 71, the upper end of the inner gear ring 7 is fixedly connected with a plurality of lower extrusion blocks 72 in an annular array, a concave block 54 is fixedly connected to the bottom of the circular groove 15, the upper end of the concave block 54 is rotatably connected with a transmission gear 55 through a circular shaft, the transmission gear 55 is arranged on the inner side of the inner gear ring 7, and the transmission gear 55 is meshed with the inner gear ring 7.

[0040] The annular limiting plate 71 is rotatably connected to the annular limiting groove 19, the transmission gear 55 is fixedly connected to the round shaft, the round shaft is rotatably connected to the concave block 54 through a bearing, the lower end of the round shaft is fixedly connected to a limiting ring, the limiting ring is arranged at the upper end of the inner side of the concave block 54, and is symmetrically distributed on the upper and lower sides of the end of the concave block 54 through the transmission gear 55 and the limiting ring. The lower end of the rotating shaft 51 is fixedly sleeved with a driving gear 52, and the driving gear 52 is meshed with the transmission gear 55.

[0041] Both sides of the upper end of the lower extrusion block 72 are arc-shaped, and both sides of the lower end of the upper extrusion block 84 are arc-shaped. When the upper extrusion block 84 contacts the lower extrusion block 72, the two abut against each other. When the rotating shaft 51 rotates, it drives the driving gear 52 to rotate, the driving gear 52 drives the transmission gear 55 to rotate, the transmission gear 55 drives the inner gear ring 7 to rotate, and the inner gear ring 7 drives the multiple lower extrusion blocks 72 thereon to rotate synchronously; When the lower extrusion block 72 contacts the upper extrusion block 84, the upper extrusion block 84 moves toward the top along the arc surface of the lower extrusion block 72 until the lower end of the upper extrusion block 84 contacts the upper end of the lower extrusion block 72. During this process, the lower extrusion block 72 pushes the upper extrusion block 84 to move upward, and the upper extrusion block 84 drives the L-shaped bracket 8 to move upward through the transmission block 83. The upper end of the L-shaped bracket 8 slides upward along the lifting slot 17. At this time, the L-shaped bracket 8 squeezes the elastic sheet 82. When the L-shaped bracket 8 moves up and down along the lifting slot 17, the L-shaped bracket 8 drives the slide plate to slide up and down along the slide slot 171, so that the L-shaped bracket 8 can move up and down stably; When the lower extrusion block 72 is separated from the upper extrusion block 84, the L-shaped bracket 8 moves downward under the action of the elastic force of the elastic sheet 82, and so on, so that the L-shaped bracket 8 shakes up and down, and the L-shaped bracket 8 drives the high temperature resistant filter screen 81 to shake up and down, and the impurities filtered out from the side of the high temperature resistant filter screen 81 are shaken off, so as to prevent the impurities from clogging the mesh of the high temperature resistant filter screen 81.

[0042] Working principle: When placing the coils, the separation plates 2 are placed from top to bottom in sequence first, and the plurality of separation plates 2 are supported and separated by the support rods 26, and the plurality of air guide ducts 28 are docked with the plurality of annular joints 27, so that the air guide components are spliced, and then the coils are placed on the support platforms 3 in sequence, with one coil placed on each support platform 3; Then, the inner cover 13 and the outer cover 11 are sequentially placed on the separation plate 2. At this time, the inner cover 13 is heated, and the air in the inner cover 13 is first discharged, and then hydrogen is introduced; The output shaft of the driving motor 5 drives the rotating shaft 51 to rotate, and the rotating shaft 51 drives the fan blades 53 to rotate, so as to blow air into the conical cover 61, and the blown air drives the hot air and hydrogen to flow into the air guide duct 28, so that the hot air and hydrogen flow from the lower end to the upper end of the air guide duct 28, and thus pass through the multiple air guide ducts 28 in sequence; The hot air and hydrogen flow into the circular cavity 31 along the branch duct 29 on the side of the air guide duct 28, and finally flow upward along the through hole 34 and the air outlet at the upper end of the circular cavity 31. The hot air and hydrogen flowing out of the air outlet flow along the fan-shaped air induction groove 33. Through the cooperation of the through hole 34, the air outlet and the fan-shaped air induction groove 33, the coiled material on the upper end of the support platform 3 can be evenly heated, and the hydrogen can be better distributed around the coiled material. The hot air and hydrogen flow around the coil and then flow downward along the side wall of the inner cover 13, and then flow downward into the L-shaped air guide groove 16, and after being filtered by the high temperature resistant filter 81, flow into the circular groove 15 through the air inlet, and then the filtered hot air and hydrogen are blown upward by the fan blades 53, so as to circulate; The circulating hot air and hydrogen are filtered by the high temperature resistant filter 81 to prevent some impurities from clogging the air guide assembly, the through holes 34 on the support platform 3, the air outlet, etc., and at the same time, it can prevent impurities from adhering to the coil.

[0043] When the rotating shaft 51 rotates, the driving gear 52 is driven to rotate, and the driving gear 52 drives the inner gear ring 7 to rotate through the transmission gear 55, and the inner gear ring 7 drives the multiple lower extrusion blocks 72 thereon to rotate synchronously; when the lower extrusion block 72 approaches the upper extrusion block 84 and contacts it, the lower extrusion block 72 pushes the upper extrusion block 84 to move upward, and the upper extrusion block 84 drives the L-shaped bracket 8 to move upward through the transmission block 83, and the upper end of the L-shaped bracket 8 slides upward along the lifting slot 17, and at this time, the L-shaped bracket 8 squeezes the elastic sheet 82; When the lower extrusion block 72 is separated from the upper extrusion block 84, the L-shaped bracket 8 moves downward under the action of the elastic force of the elastic sheet 82, and so on, so that the L-shaped bracket 8 shakes up and down, and the L-shaped bracket 8 drives the high temperature resistant filter screen 81 to shake up and down, and the impurities filtered out from the side of the high temperature resistant filter screen 81 are shaken off, preventing the impurities from clogging the mesh of the high temperature resistant filter screen 81, so that the high temperature resistant filter screen 81 can continue to perform filtering operations.

[0044] The separation plates 2 are detachably connected to each other, which is convenient for subsequent disassembly, cleaning, maintenance or replacement of the separation plates 2. The installation and disassembly of the support platform 3 are simple and convenient through the provided locking mechanism, which is convenient for subsequent maintenance, cleaning or replacement of the support platform 3. The separation plates 2 and the support platform 3 are detachably connected. When a component is damaged, only the damaged component needs to be replaced, which greatly saves the cost of maintenance and use.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A full hydrogen bell-type annealing furnace for tinplate, comprising a base (1), an outer cover (11) being mounted on the upper end of the base (1), a gas duct (12) being mounted on the side of the outer cover (11), an inner cover (13) being arranged on the inner side of the outer cover (11), and the inner cover (13) being mounted on the upper end of the base (1); Features: A plurality of partition plates (2) are equidistantly mounted from top to bottom in the inner cover (13) at the upper end of the base (1), an annular air guide plate (14) is fixedly mounted on the inner side wall of the inner cover (13), two adjacent partition plates (2) are connected via a support rod (26), the lowermost partition plate (2) is connected to the base (1) via the support rod (26), an air guide assembly is mounted on each partition plate (2), a plurality of support platforms (3) are mounted in an annular shape on each partition plate (2), the support platforms (3) and the partition plates (2) are connected via a locking mechanism, a circular boss is symmetrically protruding upward at the upper end of the base (1), the upper end of the circular boss is recessed downward to form a circular groove (15), a driving motor (5) is fixedly mounted on the lower end of the circular groove (15), a rotating shaft (51) is fixedly connected to the upper end of the output shaft of the driving motor (5), and a fan blade (53) is fixedly mounted on the upper end of the rotating shaft (51).

2. A full hydrogen bell annealing furnace for tinplate according to claim 1, characterized in that: The upper end of the separation plate (2) is provided with a plurality of slots (21) in a circular array, and the lower end of the separation plate (2) is fixedly provided with a plurality of support rods (26) in a circular array, the number of the support rods (26) being the same as the number of the slots (21), the support rods (26) at the lower end of the upper separation plate (2) being plugged into the slots (21) at the upper end of the lower separation plate (2), and the support rods (26) at the lower end of the lowest separation plate (2) being plugged into the circular boss at the upper end of the base (1).

3. A full hydrogen bell annealing furnace for tinplate according to claim 1, characterized in that: The upper end of the separation plate (2) is provided with a circular hole (22) penetrating downwardly, the air guide assembly comprises an annular joint (27) fixedly mounted on the upper end of the circular hole (22), an air guide duct (28) is fixedly connected inside the circular hole (22), the lower end of the air guide duct (28) passes downwardly through the circular hole (22) and extends to the outside, and the upper end of the air guide duct (28) is fixedly connected to the lower end of the annular joint (27); The air guide duct (28) at the lower end of the upper partition plate (2) is plugged into the annular joint (27) at the upper end of the lower partition plate (2); a support tube (6) is fixedly mounted on the upper end of the circular groove (15); the upper end of the support tube (6) abuts against the lower end of the lowermost partition plate (2); a conical cover (61) is fixedly sleeved on the lower end of the air guide duct (28) at the lower end of the lowermost partition plate (2); the air guide duct (28) and the conical cover (61) both pass downward through the support tube (6) and extend into the circular groove (15); A plurality of branch pipes (29) are fixedly plugged into the side surface of the circular hole (22) in a circular array, one end of the branch pipe (29) is connected to the support platform (3), and the other end of the branch pipe (29) is plugged into the side surface of the air guide pipe (28).

4. A full hydrogen bell annealing furnace for tinplate according to claim 3, characterized in that: The partition plate (2) is provided with a plurality of U-shaped connection grooves (23) in an annular array, and docking grooves (24) are symmetrically provided on the inner sides of the U-shaped connection grooves (23). The support platform (3) is plugged into the U-shaped connection grooves (23), and docking blocks (35) are symmetrically fixedly connected to the side surfaces of the support platform (3). A clamping groove (36) is provided on the side surfaces of the docking blocks (35), and the docking blocks (35) are plugged into the docking grooves (24).

5. A full hydrogen bell annealing furnace for tinplate according to claim 4, characterized in that: A circular cavity (31) is provided on the inner side of the support platform (3), and a plurality of fan-shaped blocks (32) are fixedly connected in a circular array in the circular cavity (31). A circular groove is provided on the upper end of the support platform (3), and a plurality of fan-shaped air induction grooves (33) are provided on the upper end of the support platform (3) in a circular array. The fan-shaped air induction grooves (33) are connected to the circular groove. An air outlet hole is provided through the bottom of the circular groove, and the lower end of the air outlet hole is connected to the circular cavity (31). A plurality of through holes (34) are provided on the upper end of the support platform (3) in a circular array, and the lower end of the through hole (34) is connected to the circular cavity (31). A mounting hole is provided on the side of the support platform (3), and one end of the branch pipe (29) is plugged into the mounting hole.

6. A full hydrogen bell annealing furnace for tinplate according to claim 4, characterized in that: A contraction groove (25) is provided on the side of the docking groove (24), and the locking mechanism is installed in the contraction groove (25). The locking mechanism includes a locking block (4) slidably installed in the contraction groove (25). A plurality of notches are provided on the side of the partition plate (2) in an annular array. A pull rod (41) is movably inserted into the side of the notch. One end of the pull rod (41) extends into the contraction groove (25) and is fixedly connected to one end of the locking block (4). The other end of the pull rod (41) is fixedly connected to a pull ring. A locking spring (42) is sleeved on the end of the pull rod (41) extending into the contraction groove (25). Two ends of the locking spring (42) are respectively in contact with the locking block (4) and the contraction groove (25). The locking block (4) is engaged with the slot (36).

7. A full hydrogen bell annealing furnace for tinplate according to claim 1, characterized in that: The upper end of the circular boss is provided with a plurality of L-shaped air guide grooves (16) in a circular array, one end of the L-shaped air guide groove (16) is connected to the circular groove (15) through an air inlet, a lifting groove (17) is provided in the L-shaped air guide groove (16), an annular mounting groove (18) is provided in the circular groove (15), an annular limiting groove (19) is provided on the inner side wall of the annular mounting groove (18), a filtering mechanism is installed in each L-shaped air guide groove (16), and a shaking transmission mechanism is installed in the circular groove (15); The filtering mechanism comprises an L-shaped bracket (8) slidably mounted in an up-and-down lifting groove (17), a rectangular groove being symmetrically provided on the side of the L-shaped bracket (8), a high-temperature resistant filter screen (81) being fixedly mounted in the rectangular groove, a plurality of elastic sheets (82) being equidistantly mounted on the upper end of the L-shaped bracket (8), the upper end of the elastic sheet (82) being in contact with the upper end of the lifting groove (17), a transmission block (83) being fixedly connected to one side of the L-shaped bracket (8) close to the rotating shaft (51), and an upper extrusion block (84) being fixedly connected to the lower end of the transmission block (83).

8. A full hydrogen bell annealing furnace for tinplate according to claim 7, characterized in that: Strip plates are symmetrically fixedly connected to both sides of the L-shaped bracket (8), and sliding grooves (171) are symmetrically opened in the lifting groove (17), and the strip plates are slidably connected to the sliding grooves (171) up and down.

9. The full hydrogen bell annealing furnace for tinplate according to claim 7, characterized in that: The shaking transmission mechanism comprises an inner gear ring (7) rotatably mounted in an annular mounting groove (18); an annular limiting plate (71) is fixedly sleeved on the side surface of the inner gear ring (7); a plurality of lower extrusion blocks (72) are fixedly connected to the upper end of the inner gear ring (7) in an annular array; a concave block (54) is fixedly connected to the bottom of the circular groove (15); the upper end of the concave block (54) is rotatably connected to a transmission gear (55) via a circular shaft; the transmission gear (55) is arranged on the inner side of the inner gear ring (7), and the transmission gear (55) is meshed with the inner gear ring (7).

10. A full hydrogen bell annealing furnace for tinplate according to claim 9, characterized in that: The annular limiting plate (71) is rotatably connected to the annular limiting groove (19), the transmission gear (55) is fixedly connected to the circular shaft, the circular shaft is rotatably connected to the concave block (54) via a bearing, and a driving gear (52) is fixedly sleeved on the lower end of the rotating shaft (51), and the driving gear (52) is meshed with the transmission gear (55).

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