Fused zirconia corundum brick heat preservation sand box convenient to demould and demoulding method

Abstract

The invention discloses an electric smelting zirconia corundum brick heat preservation sand box convenient to demould and a demoulding method.The electric smelting zirconia corundum brick heat preservation sand box comprises a bottom plate, four side plates, a bracket and four displacement assemblies, the four side plates are arranged on the bottom plate and are perpendicular to the bottom plate, and the four side plates are the first side plate, the second side plate, the third side plate and the fourth side plate in sequence; the first side plate, the second side plate, the third side plate, the fourth side plate and the bottom plate are matched to form an open box body; the bracket is arranged in the box body and is used for bearing a sand mold; the four displacement assemblies correspond to the four side plates correspondingly and are used for driving the side plates to move on the bottom plate. The heat preservation sand box comprises the bottom plate, the four side plates, the bracket and the four displacement assemblies, the four displacement assemblies are matched with the bottom plate to form the box body with the top open cavity, and when the position of the push arm in the guide sleeve is adjusted, the size of the box body can be adjusted; therefore, the method can be used for producing the fused zirconia corundum bricks with various sizes and specifications.

Description

Technical Field

[0001] The invention relates to the technical field of fused zirconium corundum brick forming, and in particular to a fused zirconium corundum brick insulation sand box and a demoulding method which are convenient for demoulding. Background Art

[0002] Fused zirconium corundum brick is a kind of refractory material for furnaces that is resistant to high temperature and erosion and is mainly used in glass industry pool kilns, glass electric kilns, slideways in the steel industry, and kilns in the sodium silicate industry. Fused zirconium corundum brick is produced by casting. First, industrial alumina powder, zircon sand and flux are mixed according to a predetermined ratio, and then put into an electric melting furnace for melting after being fully mixed. The molten melt is poured into a sand mold, and the sand mold is cooled and solidified in an insulating sand box to form a green body.

[0003] The existing insulating sand box still has some disadvantages. For example, the size of the existing insulating sand box is fixed and cannot be used for the production of fused zirconium corundum wheels of various sizes and specifications; after the insulating sand is filled in the insulating sand box, the sand mold is not easy to be taken out from the insulating sand box. Summary of the invention

[0004] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a fused zirconium corundum brick insulation sand box and a demoulding method that are easy to demould. By setting a bottom plate and four side plates, the size of the insulation sand box can be changed, which is more convenient for demoulding.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: The present invention provides a fused zirconium corundum brick insulation sand box which is easy to demould, comprising: Base plate; Four side panels, the four side panels are arranged on the bottom panel and are perpendicular to the bottom panel, the four side panels are sequentially a first side panel, a second side panel, a third side panel and a fourth side panel, the second side panel is slidably mounted on the first side panel and is perpendicular to the first side panel, the third side panel is slidably mounted on the second side panel and is perpendicular to the second side panel, the fourth side panel is slidably mounted on the third side panel and is perpendicular to the third side panel, the first side panel is slidably mounted on the fourth side panel and is perpendicular to the fourth side panel, and the first side panel, the second side panel, the third side panel, the fourth side panel and the bottom panel cooperate to form an open box body; A bracket, the bracket is arranged in the box body and is used to carry the sand mold, and the gap between the sand mold and the box body is filled with thermal insulation sand; Four displacement assemblies, each of which corresponds to four side plates and is used to drive the side plates to move on the base plate. The displacement assembly includes a guide sleeve fixedly mounted on the base plate and a push arm slidably mounted on the guide sleeve. The push arm is perpendicular to the corresponding side plate, and one end of the push arm close to the displacement assembly is slidably matched with the corresponding side plate.

[0006] Preferably, a connecting seat is fixed to one end of each side plate away from the bottom plate, a slider is fixed to one end of the connecting seat, a sliding groove cooperating with the slider is formed at one end of the connecting seat away from the slider, and the length direction of the slider is perpendicular to the side plate.

[0007] Preferably, a plurality of rod bodies are provided on the side of the side plate facing the bracket, and a plurality of pusher claws are fixed on the rod bodies.

[0008] Preferably, multiple rods on the same side plate are parallel, the rods are rotatably mounted on the side plate, a chain transmission mechanism is provided in the connecting seat, a driven sprocket is fixed to one end of the rod away from the bottom plate, and a chain in the chain transmission mechanism is wound around the driven sprocket.

[0009] Preferably, the chain passes through a slide slot, and a slider in the same slide slot is fixedly connected to the chain in the slide slot. When the slider moves in the slide slot, the slider drives the chain to rotate.

[0010] Preferably, a driving structure is provided on the bottom plate for driving the four side plates to move simultaneously, and the driving structure comprises: Four rotating shafts, the rotating shafts are rotatably mounted on the bottom plate through bearing seats, the four rotating shafts are parallel to the four side plates respectively, and two adjacent rotating shafts are connected through a bevel gear set; Four driving gears are respectively fixed on four rotating shafts, and racks are arranged on the four push arms, and the four driving gears are respectively meshed with the four racks.

[0011] Preferably, a slide rail is fixed to one side of the side plate close to the corresponding push arm, the slide rail is parallel to the bottom plate, a slide seat is fixed to the end of the push arm, and the slide seat is slidably mounted on the slide rail.

[0012] Preferably, the bracket comprises a grid plate, a plurality of legs and a suspension rod, wherein the legs are fixed to the bottom of the grid plate, and the suspension rod is fixed to the grid plate.

[0013] A demoulding method comprises the following steps: Step 1: Assemble the sand mold and place it on the bracket; Step 2: Place the bracket and sand mold in the middle of the base plate; Step 3: Adjust the relative positions of the four side panels so that the four side panels cooperate with the bottom panel to form a box body with a cavity with an open top, and surround the sand mold in the middle; Step 4: Fill the gap between the box and the sand mold with insulation sand, and then inject casting liquid into the sand mold; Step 5: After pouring, the fused zirconium corundum bricks are allowed to cool and solidify naturally in the insulating sand box; Step 6: Adjust the push arm position to keep the four side plates away from the sand mold so that the insulation sand loses support and spreads out; Step 7: Take the sand mold out of the box, dismantle the sand mold, and take out the finished fused zirconium corundum brick.

[0014] The beneficial effects of the present invention are: The insulating sand box designed by the present invention comprises a bottom plate, four side plates, a bracket and four displacement components. The positions of the four side plates are adjusted by four displacement components respectively. The four displacement components cooperate with the bottom plate to form a box body with an open top cavity. The sand mold can be placed on the bracket in the box body, and then the insulating sand is filled into the gap between the box body and the sand mold to achieve the casting and insulation of the fused zirconium corundum bricks. When the position of the push arm in the guide sleeve is adjusted, the position of the side plate can be changed and the size of the box body can be adjusted, so that the present invention can be used for the production of fused zirconium corundum bricks of various sizes. When the fused zirconium corundum bricks are cooled, the insulating sand can be made to lose support by increasing the size of the box body, thereby facilitating the removal of the sand mold from the insulating sand and facilitating demoulding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A three-dimensional diagram of the overall structure of an electric-fused zirconium corundum brick insulation sand box that is easy to demould provided in an embodiment of the present invention.

[0017] Figure 2 It is a top view of the overall structure of the present invention.

[0018] Figure 3 Schematic diagram of the driving structure of the present invention.

[0019] Figure 4 It is a schematic plan view of the first side panel of the present invention.

[0020] Figure 5 for Figure 4 Cross-sectional view at AA in the middle.

[0021] Figure 6 It is a stereoscopic view of the bracket and the sand mold of the present invention.

[0022] Figure 7 This is a top view of the overall structure when the distance between the four side panels of the present invention is increased.

[0023] Figure 8It is a three-dimensional diagram of the overall structure when the distance between the four side panels of the present invention is increased.

[0024] Description of reference numerals: 1. Bottom plate, 2. First side plate, 3. Second side plate, 4. Third side plate, 5. Fourth side plate, 6. Bracket, 7. Sand mold, 8. Guide sleeve, 9. Push arm, 10. Connecting seat, 11. Slider, 12. Slide groove, 13. Rod body, 14. Push claw, 15. Driven sprocket, 16. Guide sprocket, 17. Chain, 18. Rotating shaft, 19. Bevel gear set, 20. Drive gear, 21. Rack, 22. Slide rail, 23. Slide seat, 24. Grid plate, 25. Support foot, 26. Suspension rod. DETAILED DESCRIPTION

[0025] 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.

[0026] Embodiment 1: like Figures 1 to 8 As shown, the first embodiment of the present invention provides a fused zirconium corundum brick insulation sand box that is easy to demould. The insulation sand box of the present invention has a variable size, so it can be applied to the insulation work of sand molds 7 of various specifications. When the size of the insulation sand box is increased, it is also easier to loosen the insulation sand, thereby facilitating the removal of the sand mold 7 from the insulation sand box.

[0027] like Figure 1 and Figure 2 As shown, the thermal insulation sand box of the present invention includes a bottom plate 1 and four side plates. For the convenience of description, the four side plates are named first side plate 2, second side plate 3, third side plate 4 and fourth side plate 5 in sequence. Among them, the first side plate 2 and the third side plate 4 have the same size, and the second side plate 3 and the fourth side plate 5 have the same size, so that a rectangular thermal insulation sand box cavity can be enclosed. In this embodiment, the sizes of these four side plates are exactly the same, and a thermal insulation sand box cavity with a square cross section can be enclosed.

[0028] Specifically, the thermal insulation sand box of the present invention adopts the following structure: the bottom plate 1 is located at the bottom, the four side plates are located above the bottom plate 1, the four side plates are perpendicular to the bottom plate 1, and the lower end surfaces of the four side plates are against the bottom plate 1. A connecting seat 10 is fixed on the top of each side plate, a slider 11 is provided at one end of the connecting seat 10, and a slide groove 12 is provided at the other end. Figure 1As shown, the slider 11 on the top connecting seat 10 of the second side panel 3 is slidably mounted in the slide groove 12 on the top connecting seat 10 of the first side panel 2, and the second side panel 3 is perpendicular to the first side panel 2. The slider 11 on the top connecting seat 10 of the third side panel 4 is slidably mounted in the slide groove 12 on the top connecting seat 10 of the second side panel 3, and the third side panel 4 is perpendicular to the second side panel 3. The slider 11 on the top connecting seat 10 of the fourth side panel 5 is slidably mounted in the slide groove 12 on the top connecting seat 10 of the third side panel 4, and the fourth side panel 5 is perpendicular to the third side panel 4. The slider 11 on the top connecting seat 10 of the first side panel 2 is slidably mounted in the slide groove 12 on the top connecting seat 10 of the fourth side panel 5, and the first side panel 2 is perpendicular to the fourth side panel 5. In this way, the first side panel 2, the second side panel 3, the third side panel 4, the fourth side panel 5 and the bottom panel 1 cooperate to form an open box body with a square cavity.

[0029] The bracket 6 can be placed in the middle of the box. The bracket 6 of the present invention has a horizontal grid plate 24, four legs 25 are fixed to the bottom of the grid plate 24, and four suspension rods 26 are fixed to the four corners of the grid plate 24. The tops of the suspension rods 26 are connected by connecting plates, and the connecting plates are welded with lifting rings. Workers can place the sand mold 7 on the grid plate 24, and then use a lifting tool or manually put the bracket 6 into the box. Figure 2 As shown, the gap between the sand mold 7 and the four side plates can be filled with insulation sand. The support legs 25 can lift the grid plate 24 so that insulation sand can also enter between the grid plate 24 and the bottom plate 1, and the insulation sand can contact the sand mold 7 through the holes in the grid plate 24. The height of the side plate is higher than the sand mold 7, so more insulation sand can be added so that the insulation sand can cover the sand mold 7.

[0030] In order to conveniently adjust the position of the slider 11 in the slide slot 12, the present invention provides four displacement components, which correspond to the four side panels respectively. Figure 2 and Figure 3 As shown, each displacement assembly includes a guide sleeve 8 fixedly mounted on the bottom plate 1 and a push arm 9 slidably mounted on the guide sleeve 8. A slide seat 23 is fixed to the end of the push arm 9 close to the side plate. A slide rail 22 is fixed to the side plate. The slide seat 23 is slidably mounted on the slide rail 22. The length directions of the slide rail 22 and the slide seat 23 are parallel to the side plate. The push arm 9 is perpendicular to the corresponding side plate, and the length direction of the slider 11 is perpendicular to the side plate. Figure 1 As shown, when the push arm 9 next to the first side panel 2 moves on the guide sleeve 8, the slider 11 on the top connecting seat 10 of the first side panel 2 will slide in the slide groove 12 on the top connecting seat 10 of the fourth side panel 5, and at the same time, the first side panel 2 will also push the slide groove 12 on the top connecting seat 10 of the second side panel 3 and the slider 11 on the top connecting seat 10 of the third side panel 4 to slide relative to each other.

[0031] Combination Figure 1 , Figure 2 and Figure 7 It can be seen that when the four push arms 9 move on the corresponding guide sleeves 8 respectively, the slider 11 moves in the slide groove 12, changing the distance between the first side plate 2 and the third side plate 4, and changing the distance between the second side plate 3 and the fourth side plate 5, thereby changing the cavity size of the box body, so that the thermal insulation sand box can be used for the production of fused zirconium corundum bricks of various sizes.

[0032] Embodiment 2: On the basis of the first embodiment, in order to facilitate synchronously driving the four push arms 9 to move on the corresponding guide sleeves 8, the present invention sets a driving structure. Figure 3 As shown, a plurality of bearing seats are fixed on the bottom plate 1, and the bearing seats are used for rotatably mounting the rotating shaft 18. The present invention is provided with four rotating shafts 18, and the four rotating shafts 18 are parallel to the four side plates respectively. The four rotating shafts 18 are parallel to the bottom plate 1.

[0033] Two adjacent rotating shafts 18 are connected through a bevel gear set 19. One of the rotating shafts 18 can be connected to the output shaft of the motor, so that the rotating shaft 18 can be driven to rotate by the motor. When the rotating shaft 18 rotates, the remaining rotating shafts 18 will be driven to rotate through the four bevel gear sets 19.

[0034] A driving gear 20 is fixed on each rotating shaft 18, and a rack 21 is fixed on each pushing arm 9. The four driving gears 20 are respectively meshed with the four racks 21. Therefore, when the motor is working, the rotating shaft 18 rotates, and the driving gear 20 drives the rack 21 to move, so that the pushing arm 9 drives the side plate to move, thereby adjusting the cavity size of the box.

[0035] Embodiment three: On the basis of the first and second embodiments, the present invention further provides a toggle assembly, which is arranged on the side plate and is used to toggle the thermal insulation sand, so that the thermal insulation sand is distributed more evenly or the thermal insulation sand is more easily broken up. The toggle assembly includes a plurality of parallel rods 13 rotatably mounted on the side of the side plate facing the bracket 6, and five toggle claws 14 are fixed on each rod 13. Figure 2 As shown, when the four side panels form a box of a certain size, the gap between the box and the sand mold 7 can be filled with heat-insulating sand, and the pusher claw 14 and the rod body 13 are also located in the heat-insulating sand. Figure 7 As shown, when demolding is required, the four side plates can be driven to move to increase the size of the box. When the side plates move, the pusher claws 14 and the rod body 13 will also move, so the pusher claws 14 and the rod body 13 will be displaced in the insulating sand, so that the insulating sand can be dispersed faster, making it easier to take the sand mold 7 out of the box.

[0036] In order to further improve the disturbance effect on the insulation sand, such as Figure 4 and Figure 5 As shown, the present invention further provides a chain transmission mechanism in the connection seat 10, the chain transmission mechanism includes a plurality of guide sprockets 16 rotatably mounted in the connection seat 10 and a driven sprocket 15 fixed to the end of the rod body 13 away from the bottom plate 1, and a chain 17 is wound around the driven sprocket 15 and the guide sprocket 16. In this way, when the chain 17 rotates, the chain 17 can drive the rod body 13 to rotate, so that the pusher claw 14 can better disperse the thermal insulation sand.

[0037] like Figure 5 As shown, the chain 17 passes through the slide groove 12, and the part of the chain 17 located in the slide groove 12 is parallel to the slide groove 12. The slider 11 in the same slide groove 12 is fixedly connected to the chain 17 in the slide groove 12. Taking the cooperation of the first side plate 2 and the second side plate 3 as an example, when the slider 11 on the top connecting seat 10 of the second side plate 3 moves in the slide groove 12 on the top connecting seat 10 of the first side plate 2, the slider 11 on the top connecting seat 10 of the second side plate 3 can drive the chain 17 to move in the slide groove 12, thereby driving the chain transmission mechanism to operate, and driving the multiple rod bodies 13 to rotate through the chain 17.

[0038] Through the above arrangement, when the side plate moves, the slider 11 will move in the corresponding chute 12, thereby driving the rod body 13 and the pusher claw 14 to rotate and disperse the insulation sand. When filling the insulation sand into the box, the side plate can be driven to move back and forth slightly, so that the pusher claw 14 rotates forward and backward, continuously disperses the insulation sand, and makes the insulation sand filling more uniform. When demolding is required, the side plate can also be moved to make the pusher claw 14 rotate forward and backward to disperse the compacted insulation sand, so that the sand mold 7 is easier to remove.

[0039] Embodiment 4: On the basis of the first to third embodiments, the present invention further proposes a demoulding method, which specifically comprises: Step 1: Assemble the sand mold 7 and place it on the grid plate 24; Step 2: Use a lifting tool or manually lift the lifting rod 26 to place the bracket 6 and the sand mold 7 in the middle of the bottom plate 1; Step 3: Adjust the position of the push arm 9 in the guide sleeve 8, thereby changing the relative positions of the four side plates, so that the four side plates cooperate with the bottom plate 1 to form a box body with a cavity with an open top, and surround the sand mold 7 in the middle; Step 4: Fill the gap between the box and the sand mold 7 with insulating sand, and then inject casting liquid into the sand mold 7; Step 5: After pouring, the fused zirconium corundum bricks are allowed to cool and solidify naturally in the insulating sand box; Step 6: Adjust the position of the push arm 9 to keep the four side plates away from the sand mold 7, so that the insulation sand loses support and spreads out; Step 7: Lift the suspension rod 26, take the sand mold 7 out of the box, dismantle the sand mold 7, and take out the finished fused zirconium corundum brick.

[0040] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A fused zirconium corundum brick insulation sand box that is easy to demould, characterized in that: include: Bottom plate (1); Four side panels, the four side panels are arranged on the bottom panel (1) and are perpendicular to the bottom panel (1), the four side panels are sequentially a first side panel (2), a second side panel (3), a third side panel (4) and a fourth side panel (5), the second side panel (3) is slidably mounted on the first side panel (2) and is perpendicular to the first side panel (2), the third side panel (4) is slidably mounted on the second side panel (3) and is perpendicular to the second side panel (3), the fourth side panel (5) is slidably mounted on the third side panel (4) and is perpendicular to the third side panel (4), the first side panel (2) is slidably mounted on the fourth side panel (5) and is perpendicular to the fourth side panel (5), the first side panel (2), the second side panel (3), the third side panel (4), the fourth side panel (5) and the bottom panel (1) cooperate to form an open box body; A bracket (6), the bracket (6) being arranged in the box body and used for carrying the sand mold (7), and the gap between the sand mold (7) and the box body being filled with heat-insulating sand; Four displacement assemblies, the four displacement assemblies respectively corresponding to the four side plates, are used to drive the side plates to move on the bottom plate (1), the displacement assemblies comprising a guide sleeve (8) fixedly mounted on the bottom plate (1) and a push arm (9) slidably mounted on the guide sleeve (8), the push arm (9) being perpendicular to the corresponding side plate, and one end of the push arm (9) close to the displacement assemblies being slidably matched with the corresponding side plate.

2. The fused zirconium corundum brick insulation sand box that is easy to demould according to claim 1 is characterized in that: A connecting seat (10) is fixed to one end of each side plate away from the bottom plate (1), a sliding block (11) is fixed to one end of the connecting seat (10), a sliding groove (12) cooperating with the sliding block (11) is formed at one end of the connecting seat (10) away from the sliding block (11), and the length direction of the sliding block (11) is perpendicular to the side plate.

3. The fused zirconium corundum brick insulation sand box that is easy to demould as claimed in claim 2, characterized in that: A plurality of rod bodies (13) are provided on the side of the side plate facing the bracket (6), and a plurality of pusher claws (14) are fixed on the rod bodies (13).

4. The fused zirconium corundum brick insulation sand box that is easy to demould as claimed in claim 3 is characterized in that: A plurality of rod bodies (13) on the same side plate are parallel, the rod bodies (13) are rotatably mounted on the side plate, a chain transmission mechanism is provided in the connecting seat (10), a driven sprocket (15) is fixed to one end of the rod body (13) away from the bottom plate (1), and a chain (17) in the chain transmission mechanism is wound around the driven sprocket (15).

5. The fused zirconium corundum brick insulation sand box that is easy to demould as claimed in claim 4, characterized in that: The chain (17) passes through the slide groove (12), and the slider (11) in the slide groove (12) is fixedly connected to the chain (17) in the slide groove (12). When the slider (11) moves in the slide groove (12), the slider (11) drives the chain (17) to rotate.

6. The fused zirconium corundum brick insulation sand box that is easy to demould according to claim 1, characterized in that: The bottom plate (1) is provided with a driving structure for driving the four side plates to move simultaneously, the driving structure comprising: Four rotating shafts (18), the rotating shafts (18) being rotatably mounted on the bottom plate (1) via a bearing seat, the four rotating shafts (18) being respectively parallel to the four side plates, and two adjacent rotating shafts (18) being transmission-connected via a bevel gear set (19); Four driving gears (20), the four driving gears (20) are respectively fixed on the four rotating shafts (18), the four pushing arms (9) are each provided with a rack (21), and the four driving gears (20) are respectively meshed with the four racks (21).

7. The fused zirconium corundum brick insulation sand box that is easy to demould according to claim 1, characterized in that: A slide rail (22) is fixed to one side of the side plate close to the corresponding push arm (9), the slide rail (22) is parallel to the bottom plate (1), and a slide seat (23) is fixed to the end of the push arm (9), the slide seat (23) is slidably mounted on the slide rail (22).

8. The fused zirconium corundum brick insulation sand box that is easy to demould according to claim 1, characterized in that: The bracket (6) comprises a grid plate (24), a plurality of support legs (25) and a suspension rod (26), wherein the support legs (25) are fixed to the bottom of the grid plate (24), and the suspension rod (26) is fixed to the grid plate (24).

9. A demoulding method, based on the easy-to-demold fused zirconium corundum brick insulation sand box as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: Assemble the sand mold (7) and place it on the bracket (6); Step 2: Place the bracket (6) and the sand mold (7) in the middle of the base plate (1); Step 3: Adjust the relative positions of the four side plates so that the four side plates cooperate with the bottom plate (1) to form a box body with a cavity having an open top, and surround the sand mold (7) in the middle; Step 4: filling the gap between the box and the sand mold (7) with heat-insulating sand, and then injecting casting liquid into the sand mold (7); Step 5: After pouring, the fused zirconium corundum bricks are allowed to cool and solidify naturally in the insulating sand box; Step 6: Adjust the position of the push arm (9) to move the four side plates away from the sand mold (7) so that the insulating sand loses support and spreads out; Step 7: Take the sand mold (7) out of the box, remove the sand mold (7), and take out the finished fused zirconium corundum brick.

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