Slab crystallizer device

Abstract

The utility model provides a slab crystallizer device which comprises a crystallizer shell and a copper pipe, a water jacket is installed inside the crystallizer shell, a water inlet is formed in the side wall of the crystallizer shell, the slab crystallizer device further comprises a shell arranged outside the crystallizer shell in a sleeved mode, and an installation opening is formed in the top of the shell. A crystallizer shell is movably connected into the shell, and a servo motor used for making the crystallizer shell vibrate is fixedly installed on the inner side wall of the shell through bolts. An elastic fixing device is arranged at the top of the crystallizer shell, and the interior of the crystallizer shell is detachably connected with a copper pipe through the elastic fixing device; according to the utility model, the copper pipe can be conveniently disassembled and assembled, the time for replacing the copper pipe is shortened, and the working efficiency is improved; and by arranging the shell, the contact part and the servo motor, the crystallizer can vibrate, and demolding is easier.

Description

Technical Field

[0001] The utility model relates to the field of crystallizers, in particular to a slab crystallizer device. Background Art

[0002] The crystallizer is the ingot forming equipment in continuous steel casting and the core component of the continuous casting machine. It is a water-cooled ingot mold, and its function is to cool the high-temperature molten steel continuously injected into its inner cavity through the water-cooled copper wall, and to conduct its heat so that it gradually solidifies into an ingot with the required cross-sectional shape and shell thickness. And the ingot with the core still in liquid state is continuously pulled out from the lower mouth of the crystallizer, creating conditions for its complete solidification in the subsequent secondary cooling area.

[0003] In the related art, a utility model patent with patent announcement number CN211758353U is retrieved and proposes a slab crystallizer, including a crystallizer body, a copper tube, a first silicone sleeve and a second silicone sleeve. A first flange is fixed at the bottom of the crystallizer body, a second flange is fixed at the top of the crystallizer body, a water jacket is fixed in the middle of the crystallizer body, an electromagnetic stirrer is fixed inside the crystallizer body outside the water jacket, the upper and lower ends of the water jacket are respectively fixed to the lower surface of the second flange and the middle of the upper surface of the first flange, connecting pipes are fixed in the middle of the lower surface of the second flange and the upper surface of the first flange, the copper tube is installed in the water jacket, the upper and lower ends of the copper tube are respectively connected to the connecting pipe, the second silicone sleeve is mounted at the connection between the copper tube and the connecting pipe, and the outer side of the second silicone sleeve is fixed to the first silicone sleeve through a connecting block.

[0004] Based on the above prior art, the inventor combined relevant technologies and found the following problems in practical applications:

[0005] 1. The service life of the copper tube of the crystallizer is generally around 5,000 tons, and it needs to be replaced frequently. The utility model is not convenient for replacing the copper tube of the crystallizer.

[0006] 2. Since the solidification process is carried out under the continuous and relative movement of the slab and the crystallizer wall, the slab is easy to stick to the crystallizer wall, resulting in steel leakage accidents. Utility Model Content

[0007] In order to solve the problems in the prior art that it is inconvenient to replace the copper tube and the slab is easily bonded to the wall of the crystallizer, the utility model provides a slab crystallizer device;

[0008] The utility model provides a slab crystallizer device adopts the following technical solution:

[0009] A slab crystallizer device comprises a crystallizer shell and a copper tube, wherein a water jacket is installed inside the crystallizer shell, a water inlet is provided on a side wall of the crystallizer shell, and further comprises a shell sleeved on the outside of the crystallizer shell, a mounting opening is provided on the top of the shell, the crystallizer shell is movably connected inside the shell, a servo motor for vibrating the crystallizer shell is fixedly installed on the inner side wall of the shell by bolts; an elastic fixing device is provided on the top of the crystallizer shell, and a copper tube is detachably connected inside the crystallizer shell by the elastic fixing device;

[0010] Furthermore, one end of a first spring is welded to the top of the bottom wall of the shell, and the other end of the first spring is welded to the bottom of the crystallizer shell; a contact portion is welded to the outer side wall of the crystallizer shell, and a toggle portion for applying pressure to the contact portion is fixedly installed at the output end of the servo motor;

[0011] Furthermore, the inner wall of the installation opening extends downward to form a limiting channel, and the crystallizer shell can slide in the limiting channel;

[0012] Furthermore, the elastic fixing device includes a second cover body, a second spring and a limit plate; an annular flange larger than the inner diameter of the top opening is formed on the top of the crystallizer shell, the second cover body is covered inside the annular flange, a mounting hole is provided on the top of the second cover body, a receiving groove communicating with the mounting hole is provided inside the second cover body, a limit plate is arranged in the receiving groove, one end of the second spring is welded on the side wall of the limit plate, and the other end of the second spring is welded on the inner wall of the receiving groove; a through groove is provided on the top of the receiving groove, the top of the limit plate extends into the through groove and forms a slider; a fixing hole matching with the limit plate is provided on the side wall of the copper tube;

[0013] Furthermore, the top of the second cover body is fixedly pressed with the first cover body by bolts, and the top of the first cover body is provided with a through hole, and the side length of the through hole is equal to the side length of the opening at the end of the copper tube;

[0014] Furthermore, the height of the sliding block is flush with the through slot, and a pull slot is provided inwardly at the top of the sliding block.

[0015] In summary, the beneficial effects of the utility model are:

[0016] The utility model can conveniently disassemble and install the copper tube by arranging the elastic fixing device, and can more tightly fix the copper tube and the elastic fixing device through the first cover body, so as to prevent the copper tube from falling off, shorten the time of replacing the copper tube, and improve the working efficiency; by arranging the shell, the contact part and the servo motor, the crystallizer can be vibrated, and when the crystallizer vibrates upward, the bonding part and the crystallizer rise together, the slab is pulled apart, and the unsolidified molten steel immediately fills into the fracture, and a new solidification layer begins to form; when the crystallizer vibrates downward and the vibration speed is greater than the drawing speed, the slab is in a compressed state, the cracks are healed and reconnected, and the slab is forced to eliminate bonding, so that demoulding is easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main view of the utility model;

[0018] Figure 2 This is a schematic diagram of the specific structure of the crystallizer shell of the utility model;

[0019] Figure 3 This is a schematic cross-sectional view of the crystallizer shell of the utility model;

[0020] Figure 4 It is a front view cross-sectional schematic diagram of the utility model;

[0021] Figure 5 This is a schematic diagram of the specific structure of the second cover body of the utility model;

[0022] Figure 6 It is a schematic cross-sectional view of structure A of the utility model.

[0023] As shown in the figure: 1-crystallizer shell, 11-water jacket, 12-contact part, 2-copper tube, 21-fixing hole, 3-shell, 31-mounting port, 32-servo motor, 33-first spring, 34-sliding part, 35-limiting channel, 41-second cover body, 42-second spring, 43-limiting plate, 431-slider, 432-drawing groove, 44-mounting hole, 45-accommodating groove, 46-through groove, 5-first cover body, 51-through hole. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1 -Attached Figure 6 The utility model is further described in detail:

[0025] The utility model embodiment discloses a slab crystallizer device, such as Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, a slab crystallizer device of the utility model comprises a crystallizer shell 1 and a copper tube 2, a water jacket 11 is installed inside the crystallizer shell 1, a water inlet is opened on the side wall of the crystallizer shell 1, and also comprises a shell body 3 sleeved on the outside of the crystallizer shell 1, a mounting port 31 is opened on the top of the shell body 3, the crystallizer shell 1 is movably connected inside the shell body 3, and a servo motor 32 for vibrating the crystallizer shell 1 is fixedly installed on the inner side wall of the shell body 3 by bolts; an elastic fixing device is arranged on the top of the crystallizer shell 1, and the copper tube 2 is detachably connected inside the crystallizer shell 1 by the elastic fixing device; in this embodiment, the mounting port 31 is circular, which is substantially the same as the shape of the crystallizer shell 1 and the inner diameter of the mounting port 31 is slightly larger than the inner diameter of the crystallizer shell 1; an annular flange is arranged inside the crystallizer shell 1, the edge of the water jacket 11 is pressed on the surface of the annular flange, and a buffer pad of rubber material is arranged between the water jacket 11 and the annular flange. In a static state, the top of the crystallizer shell 1 is at the same level as the installation port 31. A water inlet is provided on the side wall of the crystallizer shell 1. The water inlet is connected to the crystallizer shell 1 through a flexible water pipe to supply water. By setting the housing 3 and the servo motor 32, the crystallizer shell 1 can vibrate up and down as a whole to achieve the demoulding effect. By setting an elastic fixing device, the copper tube 2 can be quickly disassembled and installed, shortening the time for replacing the copper tube 2 and improving work efficiency.

[0026] like Figure 4 As shown, one end of the first spring 33 is welded to the top of the bottom wall of the shell 3, and the other end of the first spring 33 is welded to the bottom of the crystallizer shell 1; a contact portion 12 is welded to the outer wall of the crystallizer shell 1, and a toggle portion 34 for applying pressure to the contact portion 12 is fixedly installed at the output end of the servo motor 32; in this embodiment, the number of the contact portion 12 and the servo motor 32 is two, and the contact portion 12 is symmetrically arranged on both sides of the outer wall of the crystallizer shell 1. When the servo motor 32 is started, the toggle portion 34 starts to rotate and toggle the contact portion 12 downward, and the contact portion 12 will drive the crystallizer shell 1 to move downward as a whole. The crystallizer shell 1 will rebound upward under the action of the first spring 33. When the crystallizer shell 1 rebounds to the normal position, the toggle portion 34 will continue to toggle the contact portion 12 downward. At this time, the crystallizer shell 1 will continue to vibrate in the longitudinal direction.

[0027] like Figure 4 , Figure 5 As shown, the inner wall of the mounting opening 31 extends downward to form a limiting channel 35, and the crystallizer shell 1 can slide in the limiting channel 35; in this embodiment, the limiting channel 35 is a cylindrical channel with upper and lower openings and an inner diameter slightly larger than the inner diameter of the crystallizer shell 1. By setting the limiting channel 35, support is provided for the crystallizer shell 1 during vibration, so that the crystallizer shell 1 will not be offset during the vibration process.

[0028] like Figure 4 , Figure 5 , Figure 6 As shown, the elastic fixing device includes a second cover body 41, a second spring 42 and a limit plate 43; an annular flange larger than the inner diameter of the top opening is formed on the top of the crystallizer shell 1, and the second cover body 41 is covered inside the annular flange, and a mounting hole 44 is provided on the top of the second cover body 41, and a receiving groove 45 communicating with the mounting hole 44 is provided inside the second cover body 41, and a limit plate 43 is arranged in the receiving groove 45, and one end of the second spring 42 is welded on the side wall of the limit plate 43, and the other end of the second spring 42 is welded on the inner wall of the receiving groove 45; a through groove 46 is provided on the top of the receiving groove 45, and the top of the limit plate 43 extends into the through groove 46 and forms a slider 431; a fixing hole 21 matched with the limit plate 43 is provided on the side wall of the copper tube 2; in this embodiment, the inner diameter of the annular flange is larger than the inner diameter of the crystallizer shell 1, and the second cover body 41 is covered in the annular flange and pressed on the top of the side wall of the crystallizer shell 1. By setting the limiting plate 43 and the second spring 42, the copper tube 2 can be fixed by the limiting plate 43 in the mounting hole 44. When in use, the slider 431 in the through groove 46 is slid to make the limiting plate 43 return to the receiving groove 45 and compress the second spring 42, and the copper tube 2 is inserted into the mounting hole 44. When the copper tube 2 reaches the predetermined position, the limiting plate 43 will extend from the receiving groove 45 under the push of the second spring 42 and be inserted into the fixing hole 21 on the side wall of the copper tube 2.

[0029] like Figure 2 , Figure 4 As shown, the top of the second cover body 41 is fixedly pressed with the first cover body 5 by bolts, and a through hole 51 is opened on the top of the first cover body 5, and the side length of the through hole 51 is equal to the side length of the opening at the end of the copper tube 2; in this embodiment, the through hole 51 is square in shape. After the second cover body 41 is fixedly connected to the copper tube 2, the first cover body 5 is fastened to the top of the second cover body 41 and the copper tube 2 by bolts. At this time, the edge of the through hole 51 is pressed on the opening at the end of the copper tube 2, so that the copper tube 2 will not shake.

[0030] like Figure 5 , Figure 6 As shown, the height of the slider 431 is flush with the through slot 46, and a pull slot 432 is opened inward at the top of the slider 431; in this embodiment, the height of the slider 431 is equal to the depth of the through slot 46. The advantage of this is that when the first cover body 5 is installed, the slider 431 will not protrude outside the through slot 46, affecting the installation of the first cover body 5.

[0031] The implementation principle of the embodiment of the utility model is:

[0032] First, install the second cover 41 to the opening at the top of the crystallizer shell 1, slide the slider 431 in the through groove 46, return the limit plate 43 to the receiving groove 45 and compress the second spring 42, insert the copper tube 2 into the installation hole 44, and when the copper tube 2 reaches the predetermined position, the limit plate 43 will extend from the receiving groove 45 under the push of the second spring 42 and be inserted into the fixing hole 21 on the side wall of the copper tube 2;

[0033] Secondly, the first cover 5 is fastened to the second cover 41 and the top of the copper tube 2 by bolts;

[0034] Finally, the servo motor 32 is started, and the shifting part 34 starts to rotate and shifts the contact part 12 downward, and the contact part 12 will drive the crystallizer shell 1 to move downward as a whole, and the crystallizer shell 1 will rebound upward under the action of the first spring 33. When the crystallizer shell 1 rebounds to the normal position, the shifting part 34 will continue to shift the contact part 12 downward, and the crystallizer shell 1 will continue to vibrate in the longitudinal direction; when the crystallizer shell 1 is upward, the bonding part and the crystallizer shell 1 rise together, the slab is pulled apart, and the unsolidified molten steel immediately fills the fracture and begins to form a new solidification layer; when the crystallizer shell 1 vibrates downward and the vibration speed is greater than the billet drawing speed, the slab is under pressure, the cracks are healed and reconnected, and the slab is forced to eliminate bonding.

[0035] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The various components mentioned in the utility model are common technologies in the existing field. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A slab crystallizer device, comprising a crystallizer shell (1) and a copper tube (2), wherein a water jacket (11) is installed inside the crystallizer shell (1), and a water inlet is opened on the side wall of the crystallizer shell (1), characterized in that: The invention also comprises a shell (3) sleeved on the outside of the crystallizer shell (1), a mounting opening (31) being provided at the top of the shell (3), the interior of the shell (3) being movably connected to the crystallizer shell (1), and a servo motor (32) for causing the crystallizer shell (1) to vibrate being fixedly mounted on the inner side wall of the shell (3) by means of bolts; an elastic fixing device is provided at the top of the crystallizer shell (1), and a copper tube (2) is detachably connected to the interior of the crystallizer shell (1) by means of the elastic fixing device.

2. A slab crystallizer device according to claim 1, characterized in that: One end of a first spring (33) is welded to the top of the bottom wall of the shell (3), and the other end of the first spring (33) is welded to the bottom of the crystallizer shell (1); a contact portion (12) is welded to the outer wall of the crystallizer shell (1), and a toggle portion (34) for applying pressure to the contact portion (12) is fixedly installed at the output end of the servo motor (32).

3. A slab crystallizer device according to claim 2, characterized in that: The inner wall of the installation opening (31) extends downward to form a limiting channel (35), and the crystallizer shell (1) can slide in the limiting channel (35).

4. A slab crystallizer device according to claim 1 or 3, characterized in that: The elastic fixing device comprises a second cover body (41), a second spring (42) and a limit plate (43); the top of the crystallizer shell (1) is formed with an annular flange larger than the inner diameter of the top opening, the inside of the annular flange is covered with the second cover body (41), the top of the second cover body (41) is provided with a mounting hole (44), the inside of the second cover body (41) is provided with a receiving groove (45) communicating with the mounting hole (44), and the inside of the receiving groove (45) is provided with a plurality of springs (43). A limiting plate (43) is provided, one end of a second spring (42) is welded to a side wall of the limiting plate (43), and the other end of the second spring (42) is welded to an inner wall of the receiving groove (45); a through groove (46) is provided at the top of the receiving groove (45), the top of the limiting plate (43) extends into the through groove (46) and forms a slider (431); a fixing hole (21) matching with the limiting plate (43) is provided on the side wall of the copper tube (2).

5. A slab crystallizer device according to claim 4, characterized in that: The top of the second cover body (41) is fixedly pressed with the first cover body (5) by bolts, and the top of the first cover body (5) is provided with a through hole (51), and the side length of the through hole (51) is equal to the side length of the opening at the end of the copper tube (2).

6. A slab crystallizer device according to claim 4, characterized in that: The height of the sliding block (431) is flush with the through slot (46), and a pull slot (432) is provided inwardly at the top of the sliding block (431).

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