Tunnel type oven for sizing magnesium oxide rod blanks

Abstract

The application relates to the technical field of magnesium oxide rod production, in particular to a tunnel-type oven for shaping magnesium oxide rod blanks, which comprises a horizontally arranged base, a furnace body is arranged on the top of the base, a conveying belt is arranged in the middle of the base and used for feeding the magnesium oxide rod blanks into the furnace body, an inner lining plate is arranged in the furnace body, a plurality of connecting plates are fixedly connected to the outer wall of the inner lining plate, a first sliding groove is vertically fixedly connected to the side wall of the connecting plate, a first sliding block is slidably arranged in the first sliding groove, a second sliding groove is horizontally fixedly connected to the upper surface of the first sliding block, a second sliding block is slidably arranged in the second sliding groove, and a clamping plate is rotationally connected to the end of the second sliding block through rotating structure. During the baking and shaping process, the magnesium oxide rod blanks in the furnace body can be turned over, so that the uniformity of the heating of the magnesium oxide rod blanks in the oven is ensured, and the magnesium oxide rod blanks are prevented from cracking due to uneven heating.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of magnesium oxide rod production, and particularly relates to a tunnel type oven for shaping magnesium oxide rod blanks. BACKGROUND

[0002] Magnesium oxide rods have various shapes to meet the needs of different fields of application, and common magnesium oxide rods are in the form of cylinders, prisms and hollow tubes. During magnesium oxide rod production, a hot setting process is used to shape the magnesium oxide rod blanks extruded by an extruder, that is, the magnesium oxide rod blanks extruded by the extruder are simultaneously dropped onto the mesh belt of a conveying belt and uniformly sent into a tunnel oven for baking and shaping. However, during the process in which the magnesium oxide rod blanks uniformly pass through the tunnel oven, the bottom surface of the blank is always in contact with the mesh belt of the conveying belt, so that the uniformity of heating of each surface of the blank is not the same, and under the stress in the blank, cracking may occur, which affects the quality of the product. SUMMARY

[0003] The present application aims at solving the problem in the prior art that the uniformity of heating of each surface of the blank is not the same, and under the stress in the blank, cracking may occur, and provides a tunnel type oven for shaping magnesium oxide rod blanks.

[0004] To achieve the above object, the present application adopts the following technical scheme:

[0005] The tunnel type oven for shaping magnesium oxide rod blanks comprises a horizontally arranged base, a furnace body is arranged on the top of the base, a conveying belt is arranged in the middle of the base to send the magnesium oxide rod blanks into the furnace body, an inner lining plate is arranged in the furnace body, a plurality of connecting plates are fixedly connected to the outer wall of the inner lining plate, a first sliding groove is vertically fixedly connected to the side wall of each connecting plate, a first sliding block is slidingly connected in the first sliding groove, a second sliding groove is horizontally fixedly connected to the side surface of the first sliding block, a second sliding block is slidingly connected in the second sliding groove, and a clamping plate is rotatably connected to the end of the second sliding block through a rotating structure.

[0006] Preferably, the rotating structure comprises a shell, a rotating block is rotatably arranged in the shell, a plurality of blind holes are arranged in the outer wall of the rotating block, a plurality of half-spherical round head marbles are slidingly connected in the blind holes, a plurality of limiting grooves are arranged in the inner wall of the shell, the round head marbles are matched with the limiting grooves, and a compression spring is arranged in the blind hole to apply an elastic force to the round head marble.

[0007] Preferably, a ratchet wheel is coaxially fixedly connected to the end surface of the rotating block, a sliding pipe is fixedly connected to the end surface of the ratchet wheel, a sliding rod is slidingly connected in the sliding pipe, and the clamping plate is fixedly connected to the end of the sliding rod.

[0008] Preferably, a buffer spring is arranged in the sliding pipe to apply an elastic force to the sliding rod.

[0009] Preferably, the second slider top is fixed with a nut seat, the nut seat is threadedly matched with a screw rod, one end of the screw rod is fixed with an incomplete gear, the rotating block end face is rotatably installed with a ring gear, the ring gear is sleeved on a ratchet wheel, the ring gear is matched with the incomplete gear, a plurality of pawls are hinged on the ring gear inner wall, and the pawls are matched with the ratchet wheel.

[0010] Preferably, the other end of the screw rod is fixed with a first sprocket, the first sprocket end face is fixed with a connecting block, and the first sliding groove is provided with a notch.

[0011] Preferably, the inner lining plate outer wall is rotatably installed with a second sprocket, the second sprocket height is greater than the first sprocket height, the second sprocket is matched with a chain, the second sprocket provides upward supporting force to the chain, the first sprocket is matched with the chain, and the chain provides upward supporting force to the first sprocket.

[0012] Preferably, a guide wheel is rotatably installed on the furnace body outer wall, one end of the chain is fixed on the inner lining plate outer wall, the other end of the chain is connected to the bearing plate after being changed direction through the guide wheel, the bearing plate is provided with a guide groove, and the guide block is fixed on the furnace body outer wall and is slidably matched in the guide groove.

[0013] Preferably, the bearing plate top is fixed with a lifting ring for connecting a lifting machine.

[0014] The tunnel type oven for magnesium oxide rod blank shaping has the beneficial effects that the tunnel type oven for magnesium oxide rod blank shaping can overturn the magnesium oxide rod blank in the furnace during baking and shaping, so as to ensure the uniformity of the heating of the magnesium oxide rod blank in the oven and prevent the magnesium oxide rod blank from cracking due to uneven heating. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The figure is a structural schematic view of the tunnel type oven for magnesium oxide rod blank shaping.

[0016] Figure 2 The figure is a structural schematic view of the furnace body of the tunnel type oven for magnesium oxide rod blank shaping. Figure 1 .

[0017] Figure 3 The figure is a structural schematic view of the furnace body of the tunnel type oven for magnesium oxide rod blank shaping. Figure 2 .

[0018] Figure 4 The figure is a structural schematic view of the tunnel type oven for magnesium oxide rod blank shaping. Figure 3 The figure is an enlarged view of position A in the tunnel type oven for magnesium oxide rod blank shaping.

[0019] Figure 5 A tunnel-type oven for shaping a magnesium oxide rod blank according to the present invention Figure 3 An enlarged view of B in FIG. 1.

[0020] Figure 6 A structure diagram of an inner lining plate of a tunnel-type oven for shaping a magnesium oxide rod blank according to the present invention.

[0021] Figure 7 A structure diagram of a clamp plate of a tunnel-type oven for shaping a magnesium oxide rod blank according to the present invention.

[0022] Figure 8 A tunnel-type oven for shaping a magnesium oxide rod blank according to the present invention Figure 7 A plan view of FIG. 1.

[0023] Figure 9 A tunnel-type oven for shaping a magnesium oxide rod blank according to the present invention Figure 8 A sectional view of C-C in FIG. 1.

[0024] Figure 10 A tunnel-type oven for shaping a magnesium oxide rod blank according to the present invention Figure 9 An enlarged view of D in FIG. 1.

[0025] Figure 11 A structure diagram of a connecting block of a tunnel-type oven for shaping a magnesium oxide rod blank according to the present invention.

[0026] Figure 12 A structure diagram of a ring gear and a ratchet gear of a tunnel-type oven for shaping a magnesium oxide rod blank according to the present invention.

[0027] Figure 13 A tunnel-type oven for shaping a magnesium oxide rod blank according to the present invention Figure 12 An enlarged view of E in FIG. 1.

[0028] Figure 14 A structure diagram of a housing of a tunnel-type oven for shaping a magnesium oxide rod blank according to the present invention.

[0029] In the figure: 1, base; 101, guide block; 2, conveyor belt; 3, furnace body; 4, inner lining plate; 5, bearing plate; 6, lifting ring; 7, guide groove; 8, guide wheel; 9, chain; 10, connecting plate; 11, opening; 12, first sliding groove; 13, notch; 14, connecting block; 15, clamping plate; 16, first sliding block; 17, second sliding groove; 18, second sliding block; 19, nut seat; 20, first sprocket; 21, screw; 22, incomplete gear; 23, sliding rod; 24, sliding pipe; 25, buffer spring; 26, ratchet wheel; 27, ring gear; 28, pawl; 29, rotating block; 30, shell; 31, blind hole; 32, round head marble; 33, compression spring; 34, limiting groove; 35, second sprocket. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all.

[0031] Reference Figures 1-3 A tunnel type oven for shaping magnesium oxide rod blanks includes a bearing plate 5 and a horizontally arranged base 1. The base 1 has a furnace body 3 installed on the top. A conveyor belt 2 is installed in the middle of the base 1 to send the magnesium oxide rod blanks into the furnace body 3. The bearing plate 5 has a guide groove 7 opened on the top. The furnace body 3 has guide blocks 101 fixedly connected to the outer wall. The guide blocks 101 are slidingly fitted in the guide groove 7. The bearing plate 5 has a lifting ring 6 fixedly connected to the top, which is used to connect a crane.

[0032] The output end of the crane is connected to the lifting ring 6. When the crane works, it drives the bearing plate 5 to vertically slide on the guide blocks 101 through the lifting ring 6, so that the bearing plate 5 exerts a pulling force on the end of the chain 9.

[0033] As shown in Figure 2 and Figure 6 , the furnace body 3 has an inner lining plate 4 installed inside. The inner lining plate 4 has a plurality of connecting plates 10 fixedly connected to the outer wall. The connecting plates 10 have openings 11 opened for accommodating the chain 9. The side walls of the connecting plates 10 have first sliding grooves 12 fixedly connected vertically. The first sliding grooves 12 have first sliding blocks 16 slidingly fitted inside. The side surfaces of the first sliding blocks 16 have second sliding grooves 17 fixedly connected horizontally. The second sliding grooves 17 have second sliding blocks 18 slidingly fitted inside. The end of the second sliding block 18 is rotatably connected to the clamping plate 15 through a rotating structure. The rotating structure includes a shell 30. The shell 30 has a rotating block 29 rotatably installed inside. The outer wall of the rotating block 29 has a plurality of blind holes 31 opened. The blind holes 31 have semispherical round head marbles 32 slidingly fitted inside. The inner wall of the shell 30 has a plurality of limiting grooves 34 opened. The round head marbles 32 are matched with the limiting grooves 34. The blind holes 31 have compression springs 33 arranged inside to exert a spring force on the round head marbles 32.

[0034] When the first slider 16 slides in the vertically arranged first sliding groove 12, the clamping plate 15 is vertically moved, so as to adjust the height of the clamping plate 15.

[0035] When the second slider 18 moves horizontally in the horizontally arranged second sliding groove 17, the distance between the clamping plates 15 on both sides of the inner lining plate 4 is changed, so that the clamping plate 15 clamps the magnesium oxide rod blank transported on the conveying belt 2.

[0036] The round head 32 is located in the limiting groove 34 under the elastic force of the compression spring 33, and the shell 30 and the rotating block 29 are kept in a relatively stable state by the interference of the round head 32, so as to prevent the rotating block 29 from rotating randomly in the shell 30.

[0037] As shown in Figures 7-13 , the rotating block 29 is coaxially fixed on the end face of the rotating block 29, the sliding pipe 24 is fixed on the end face of the sliding pipe 24, the sliding pipe 24 is slidably connected in the sliding pipe 24, the clamping plate 15 is fixedly connected on the end of the sliding rod 23, and the buffer spring 25 is arranged in the sliding pipe 24 to apply an elastic force to the sliding rod 23.

[0038] When the clamping plate 15 clamps the magnesium oxide rod blank, the elastic support force of the buffer spring 25 to the sliding rod 23 enables the clamping plate 15 to have a certain resilience in the horizontal direction, so as to prevent the clamping plate 15 from exerting excessive pressure to damage the magnesium oxide rod blank during clamping.

[0039] As shown in Figure 14 , the second slider 18 is fixedly connected with the nut seat 19, the screw rod 21 is threadedly connected in the nut seat 19, one end of the screw rod 21 is fixedly connected with the incomplete gear 22, the annular gear 27 is rotatably installed on the end face of the rotating block 29, the annular gear 27 is sleeved on the ratchet wheel 26, the annular gear 27 is matched with the incomplete gear 22, a plurality of ratchet claws 28 are hinged on the inner wall of the annular gear 27, and the ratchet claws 28 are matched with the ratchet wheel 26. The other end of the screw rod 21 is fixedly connected with the first sprocket 20, the end face of the first sprocket 20 is fixedly connected with the connecting block 14, the slot 13 is arranged through the first sliding groove 12, and the connecting block 14 is slidably connected in the slot 13.

[0040] The first sprocket 20 is fixedly connected with the connecting block 14, and when the first sprocket 20 rotates, the reverse force of the slot 13 to the connecting block 14 in the vertical direction enables the first sprocket 20 to move in the vertical direction, and the vertical movement of the first sprocket 20 in the first sliding groove 12 enables the first slider 16 to move vertically, so as to adjust the height of the clamping plate 15.

[0041] The first sprocket 20 also drives the screw rod 21 to rotate during rotation, the screw rod 21 drives the nut seat 19 to move horizontally during rotation, the nut seat 19 drives the second sliding block 18 to move horizontally in the second sliding groove 17, thereby enabling the clamp plate 15 to clamp the material.

[0042] The incomplete gear 22 is also driven to rotate during rotation of the screw rod 21, the incomplete gear 22 drives the ring gear 27 to rotate intermittently during rotation, the ring gear 27 drives the sliding pipe 24 to rotate through the cooperation of the pawl 28 and the ratchet wheel 26 during rotation, the sliding pipe 24 drives the clamp plate 15 to rotate through the sliding rod 23, the clamp plate 15 drives the clamped magnesium oxide rod blank to rotate, thereby enabling the clamp plate 15 to turn over the magnesium oxide rod blank.

[0043] The second sprocket 35 is rotatably installed on the outer wall of the inner lining plate 4, the height of the second sprocket 35 is greater than the height of the first sprocket 20, the second sprocket 35 is matched with the chain 9, the second sprocket 35 provides upward supporting force to the chain 9, the first sprocket 20 is matched with the chain 9, the chain 9 provides upward supporting force to the first sprocket 20, one end of the chain 9 is fixedly connected to the outer wall of the inner lining plate 4, the other end of the chain 9 is connected to the bearing plate 5 after being guided by the guide wheel 8.

[0044] When the bearing plate 5 exerts pulling force on the free end of the chain 9, the chain 9 exerts oblique upward driving force on the first sprocket 20, the vertical component of the driving force balances part of the pressure of the first sprocket 20 on the connecting block 14, thereby reducing the load borne by the connecting block 14, and the horizontal component of the driving force is used to drive the first sprocket 20 to rotate.

[0045] Working principle:

[0046] The bearing plate 5 is driven by the crane to move upwards, and the bearing plate 5 exerts pulling force on the free end of the chain 9 when moving upwards.

[0047] The chain 9 moves relative to the first sprocket 20 under the action of the pulling force, and the first sprocket 20 is driven to rotate at this time.

[0048] During rotation of the first sprocket 20:

[0049] The first sprocket 20 drives the screw rod 21 to rotate, the screw rod 21 drives the nut seat 19 to move horizontally during rotation, the nut seat 19 drives the second sliding block 18 to move horizontally in the second sliding groove 17, thereby enabling the clamp plate 15 to clamp the material.

[0050] Since the first sprocket 20 is fixedly connected to the connecting block 14, the reverse force of the notch 13 on the connecting block 14 enables the first sprocket 20 to move in the vertical direction, and the first sprocket 20 moves in the vertical direction, thereby enabling the first sliding block 16 to move vertically in the first sliding groove 12, and the clamp plate 15 drives the clamped magnesium oxide rod blank to move upwards.

[0051] When the magnesium oxide rod blank reaches the highest point and there is enough space for rotation under the magnesium oxide rod blank, the incomplete gear 22 starts to drive the ring gear 27 to rotate, and the ring gear 27 drives the clamping plate 15 to rotate through the ratchet structure, so that the magnesium oxide rod blank clamped by the clamping plate 15 rotates, thereby turning over the magnesium oxide rod blank.

[0052] After the magnesium oxide rod blank is turned over, the crane drives the bearing plate 5 to move downward, and under the action of gravity, the chain 9 resets under the pressure action of the first sprocket 20, and in the resetting process, the first sprocket 20 reverses, and in the reversing process of the first sprocket 20, the magnesium oxide rod blank clamped by the clamping plate 15 is discharged to the conveyor belt 2, and due to the existence of the ratchet structure, the magnesium oxide rod blank will not reverse and reset, so that the magnesium oxide rod blank is turned over in the furnace body 3, ensuring the uniformity of heating during the shaping of the magnesium oxide rod blank.

[0053] Compared with the prior art, the tunnel type oven for shaping the magnesium oxide rod blank provided by the present application can turn over the magnesium oxide rod blank in the furnace body 3 during the baking and shaping process, so as to ensure the uniformity of heating of the magnesium oxide rod blank in the oven and prevent the magnesium oxide rod blank from cracking due to uneven heating.

[0054] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A tunnel furnace for sizing of magnesium oxide rod blanks, comprising a horizontally arranged base (1), a furnace body (3) being mounted on top of the base (1), and a conveyor belt (2) being mounted in the middle of the base (1) for feeding the magnesium oxide rod blanks into the furnace body (3), characterized in that A furnace body (3) is internally provided with an inner lining plate (4), a plurality of connecting plates (10) are fixedly connected to the outer wall of the inner lining plate (4), a first sliding groove (12) is vertically fixedly connected to the side wall of the connecting plate (10), a first sliding block (16) is slidingly connected in the first sliding groove (12), a second sliding groove (17) is horizontally fixedly connected to the side surface of the first sliding block (16), a second sliding block (18) is slidingly connected in the second sliding groove (17), and a clamping plate (15) is rotatably connected to the end of the second sliding block (18) through a rotating structure, and the clamping plate (15) is used for clamping materials; A nut seat (19) is fixedly connected to the top of the second sliding block (18), and a screw rod (21) is threadedly connected in the nut seat (19); A first sprocket (20) is fixedly connected to the other end of the screw rod (21), a connecting block (14) is fixedly connected to the end surface of the first sprocket (20), and a notch (13) is formed in the first sliding groove (12), and the connecting block (14) is slidingly connected in the notch (13); A second sprocket (35) is rotatably connected to the outer wall of the inner lining plate (4), the height of the second sprocket (35) is greater than the height of the first sprocket (20), and a chain (9) is connected to the second sprocket (35), the second sprocket (35) provides upward supporting force for the chain (9), the first sprocket (20) is connected to the chain (9), and the chain (9) provides upward supporting force for the first sprocket (20); A guide wheel (8) is rotatably connected to the outer wall of the furnace body (3), one end of the chain (9) is fixedly connected to the outer wall of the inner lining plate (4), the other end of the chain (9) is connected to a bearing plate (5) after being changed direction through the guide wheel (8), a guide groove (7) is formed in the bearing plate (5), a guide block (101) is fixedly connected to the outer wall of the furnace body (3), and the guide block (101) is slidingly connected in the guide groove (7); A lifting ring (6) is fixedly connected to the top of the bearing plate (5) and used for connecting a lifting machine.

2. The tunnel-type oven for sizing a magnesium oxide rod blank according to claim 1, wherein The rotating structure comprises a shell (30), a rotating block (29) is rotatably connected in the shell (30), a plurality of blind holes (31) are formed in the outer wall of the rotating block (29), a plurality of semispherical round head marbles (32) are slidingly connected in the blind holes (31), a plurality of limiting grooves (34) are formed in the inner wall of the shell (30), the round head marbles (32) are connected with the limiting grooves (34), and a compression spring (33) is arranged in the blind hole (31) to apply elastic force to the round head marble (32).

3. The tunnel-type oven for sizing a magnesium oxide rod blank according to claim 2, wherein A ratchet wheel (26) is coaxially fixedly connected to the end surface of the rotating block (29), a sliding pipe (24) is fixedly connected to the end surface of the ratchet wheel (26), a sliding rod (23) is slidingly connected in the sliding pipe (24), and the clamping plate (15) is fixedly connected to the end of the sliding rod (23).

4. The tunnel-type oven for sizing a magnesium oxide rod blank according to claim 3, wherein A buffer spring (25) is arranged in the sliding pipe (24) to apply elastic force to the sliding rod (23).

5. The tunnel-type oven for sizing a magnesium oxide rod blank according to claim 4, wherein One end of the screw rod (21) is fixed with an incomplete gear (22), the end face of the rotating block (29) is rotatably provided with an annular gear (27), the annular gear (27) is sleeved on a ratchet wheel (26), the annular gear (27) is matched with the incomplete gear (22), and a plurality of ratchet claws (28) are hinged on the inner wall of the annular gear (27), and the ratchet claws (28) are matched with the ratchet wheel (26).

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