Matching mechanism for lower sliding plate brick and lower nozzle brick of steel seepage prevention steel ladle
By designing an annular positioning table, multi-stage steps and annular auxiliary groove between the lower slide brick and the drain brick, combining the rotary lock assembly and magnetic steel column, the shear stress between the lower slide plate and the drain in steelmaking continuous casting is solved. The steel seepage problems caused by the achievement of better sealing effect and reduced maintenance needs.
Patent Information
- Application Number
- CN202420995073.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-09
AI Technical Summary
During the continuous casting of steelmaking, the shear stress between the lower slide plate and the drain leads to the deterioration of the sealing of the fire mud, and steel seepage occurs. The existing design is difficult to effectively prevent steel seepage.
Design a supporting mechanism for anti-seepage steel laminated under sliding plate bricks and sewer bricks. By providing an annular positioning table and multi-stage steps on the surface of the sewer bricks, and an annular auxiliary groove is provided on the bottom of the skateboard cavity, the fire mud joint extends to the auxiliary In the groove, the adhesive area is increased; at the same time, magnetic steel columns and support ramps are provided at the four corners of the slider cavity, combining rotary lock assembly and limit ring to ensure sealing.
It effectively improves the bonding area and bonding strength of fire mud, enhances the ability to resist shear stress, significantly improves the effect of anti-seepage steel, and reduces the maintenance frequency.
Smart Images
Figure CN222268683U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of steelmaking equipment, in particular to a matching mechanism of a lower slide brick and a drain brick for an anti-seepage steel ladle. Background Art
[0002] The sliding nozzle is a control device for molten steel during the casting process of the continuous casting machine, and has the function of regulating the flow rate of molten steel. The general sliding nozzle includes a sliding mechanism, an upper casting brick, an upper slide plate, a lower slide plate, a lower casting brick, and a hydraulic drive part. The lower slide plate is conventionally designed as a male convex port or a female concave port, and the lower nozzle is designed as a male convex port or a female concave port. The lower slide plate and the lower nozzle are connected by a fire mud joint, and the lower nozzle is tightened by a tightening device when the lower nozzle is installed in the mechanism mold frame and the lower slide plate. With the development of steelmaking continuous casting and market changes, the continuous casting machine in the steelmaking plant is currently equipped with a long nozzle for protection pouring (the long nozzle is sleeved on the lower part of the lower nozzle brick). The lower slide plate is pulled by the hydraulic cylinder drive mechanism to control the flow. There is a large shear stress between the lower nozzle and the long nozzle, which is prone to loosening at the joint between the lower nozzle and the lower slide plate, and the fire mud sealing deteriorates, resulting in steel seepage, which needs to be improved. Utility Model Content
[0003] In order to solve the above problems, the utility model provides a matching mechanism of a lower slide brick and a drain brick for an anti-seepage steel ladle.
[0004] The technical scheme of the utility model is: a matching mechanism of a lower slide brick and a water outlet brick of an anti-seepage steel ladle, comprising a lower mold frame, a lower slide brick and a water outlet brick, wherein a slide cavity and a water outlet sleeve which are interconnected are arranged in the lower mold frame, a through hole in the middle of the slide cavity is coaxially corresponding to the water outlet sleeve, the lower slide brick is matched and sleeved in the slide cavity, the water outlet brick is fixedly sleeved in the water outlet sleeve, the water outlet brick and the lower slide brick are butted against each other, and the flow steel holes of the two are coaxially corresponding; an annular positioning platform which is coaxially corresponding to the flow steel hole thereof is arranged on the surface of the water outlet brick, the inner side surface and the outer side surface of the annular positioning platform are both arranged with a certain slope, an annular auxiliary groove is arranged on the outer side of the annular positioning platform, the annular auxiliary groove corresponds to the bottom surface of the slide cavity and a gap for entering fire mud is left between the two, and a plurality of steps are arranged on the upper port of the water outlet brick, the plurality of steps are matched in size and corresponding in position to the annular positioning platform, and fire mud is arranged between the plurality of steps and the annular positioning platform and in the annular auxiliary groove.
[0005] Preferably, a plurality of long grooves are evenly arranged on the bottom surface of the slide plate cavity along the length direction of the lower slide plate brick, and arc-shaped transitions are arranged at both ends of the long grooves.
[0006] Preferably, the surface of the annular positioning platform close to the inner edge is provided with an annular partition groove armor, and the surface of the slide plate between the flow steel hole and the annular positioning platform is provided with an annular partition groove armor.
[0007] Preferably, the butt-jointed step surface of the drain brick is provided with an annular partition groove B, the annular partition groove B and the annular partition groove A correspond to each other, and the annular partition groove B and the annular partition groove A have the same size.
[0008] Preferably, the lower port of the nozzle sleeve is provided with a rotary lock assembly, through which the lower nozzle brick is locked in the nozzle sleeve.
[0009] Preferably, a limiting ring is provided at the upper end of the nozzle sleeve, and the step of the bottom layer of the lower nozzle brick is in contact with the limiting ring, and a fitting surface is formed between the two.
[0010] Preferably, both ends of the skateboard cavity are provided with supporting ramps, and the supporting ramps press against the side surfaces of the skateboard bricks and the hollow cavity in the middle of the supporting ramps.
[0011] Preferably, through holes are provided at the four corners of the slide cavity, and magnetic steel columns are fixedly installed in the through holes.
[0012] The beneficial technical effects of the utility model are:
[0013] The annular auxiliary groove provided on the lower slide plate brick of the utility model corresponds to the bottom surface of the slide plate cavity and is connected to the fire mud joint between the lower slide plate brick and the lower water outlet brick. Therefore, the fire mud in the fire mud joint can extend into the annular auxiliary groove to increase the length of the fire mud joint, extending the bonding area of the fire mud. At the same time, the annular partition grooves corresponding to each other can embed the fire mud into the main body of the lower water outlet brick and the lower slide plate brick, thereby increasing the contact area and bonding strength of the fire mud between the two, achieving a better effect in resisting shear stress, effectively improving the anti-seepage steel effect, and reducing the maintenance frequency. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0015] Figure 2 yes Figure 1 AA section structural diagram;
[0016] Figure 3 yes Figure 2 A schematic diagram of the structure after the annular partition groove is set;
[0017] Figure 4 It is a three-dimensional structural diagram of the lower slide brick;
[0018] Figure 5 The utility model is a schematic diagram of a three-dimensional structure after the lower slide brick and the drain brick are removed.
[0019] In the figure, 11. lower mold frame, 111. slide plate cavity, 112. nozzle sleeve, 113. long groove, 114. limit ring, 115. support ramp, 116. hollow cavity, 13. lower slide plate brick, 131. annular positioning platform, 132. annular auxiliary groove, 14. lower nozzle brick, 141. multi-step steps, 15. flow steel hole, 16. fire clay, 171. annular partition groove A, 172. annular partition groove B, 18. rotary lock assembly, 19. magnetic steel column. DETAILED DESCRIPTION
[0020] Example 1, see the attached specification Figure 1-2 5. A matching mechanism for a lower slide brick and a drain brick of an anti-seepage steel ladle, comprising a lower mold frame 11, a lower slide brick 13 and a drain brick 14. The lower mold frame 11 is provided with a slide cavity 111 and a drain sleeve 112 which are interconnected. The lower slide brick 13 is matched and sleeved in the slide cavity 111. The drain brick 14 is fixedly sleeved in the drain sleeve 112. The drain brick 14 and the lower slide brick 13 are butted against each other. The surface of the drain brick 14 is provided with an annular positioning platform 131 which is coaxial with its steel flow hole 15. The outer side of the annular positioning platform 131 is provided with an annular auxiliary groove 132. The annular auxiliary groove 132 corresponds to the bottom surface of the slide cavity 111 and is aligned with the lower slide brick 13 and the drain sleeve 112. The joints of the fire mud 16 between the mouth bricks 14 are connected, so the fire mud 16 in the joints of the fire mud 16 can extend into the annular auxiliary groove 132 to increase the length of the joints of the fire mud 16, extending the bonding area of the fire mud 16, and the upper end of the downspout brick 14 is provided with a multi-step step 141, which matches the size and position of the annular positioning platform 131, and the steps at the upper ends of the multi-step steps 141 can be inserted into the inside of the annular positioning platform 131, and fire mud 16 is provided between the multi-step steps 141 and the annular positioning platform 131 and in the annular auxiliary groove 132. The joints are filled with fire mud 16, and the lower slide brick 13 and the downspout brick 14 are bonded and fixed as a whole.
[0021] like Figure 5 As shown, the bottom surface of the slide cavity 111 is evenly provided with a plurality of long grooves 113 along the length direction of the lower slide brick 13. The long grooves 113 form a cavity between the slide cavity 111 and the lower slide brick 13, which is beneficial to reduce the vibration impact force and facilitate the removal of the lower slide brick 13 from the slide cavity 111.
[0022] In this embodiment, a rotary lock assembly 18 is provided at the lower end of the nozzle sleeve 112, through which the nozzle brick 14 is locked in the nozzle sleeve 112. The rotary lock assembly 18 locks the nozzle brick 14 by rotation, which is easy to operate and will not cause damage to the nozzle brick 14 due to locking.
[0023] like Figure 2As shown, a limiting ring 114 is provided at the upper end of the nozzle sleeve 112, and the bottom step of the nozzle brick 14 contacts the limiting ring 114. The limiting ring 114 is used to provide assembly positioning for the nozzle brick 14 to improve assembly quality and efficiency.
[0024] Both ends of the slide cavity 111 are provided with support ramps 115, and the middle hollow cavity 116 of the support ramp 115 is used to support the lower slide brick 13 at the four corners, and the lower slide brick 13 is tightly sleeved in the slide cavity 111. Through holes are provided at the four corners of the slide cavity 111, and magnetic steel columns 19 are fixedly installed in the through holes. The magnetic force generated by the magnetic steel columns 19 is used to adsorb the steel shell set on the slide, so as to play the role of positioning the slide.
[0025] When the sliding water outlet mechanism of this embodiment is used, the water outlet brick 14 is first inserted into the water outlet sleeve 112 and locked and fixed by the rotating lock assembly 18, and then the fire mud 16 is applied to the surface of the multi-step step 141 at the end of the water outlet brick 14, and the lower slide block 13 is matched and inserted into the slide cavity 111. The supporting ramps 115 at the four corners of the slide cavity 111 are supported on the four corners of the slide to fix it, and the fire mud 16 is compacted in the joint formed between the lower slide block 13 and the water outlet brick 14, and the fire mud 16 can be squeezed into the annular auxiliary groove 132 to increase the length of the fire mud 16 joint, extend the bonding area of the fire mud 16, and improve the fixed bonding strength of the lower slide block 13 in the lower mold frame 11.
[0026] Example 2, see the attached specification Figure 3-4 On the basis of the first embodiment, this embodiment is provided with an annular partition groove A 171 on the surface of the inner edge of the annular positioning platform 131, an annular partition groove A 171 is provided on the surface of the slide plate between the flow steel hole 15 and the annular positioning platform 131, and an annular partition groove B 172 is provided on the docking step surface of the downspout brick 14, and the annular partition groove B 172 and the annular partition groove A 171 correspond to each other. The corresponding annular partition grooves in this embodiment can embed the fire mud 16 into the body of the downspout brick 14 and the downslide brick 13, thereby increasing the contact area and bonding strength of the fire mud 16 between the two, having a better effect of resisting shear stress, and effectively improving the anti-seepage steel effect.
Claims
1. A matching mechanism for lower slide bricks and drain bricks of an anti-seepage steel ladle, comprising a lower mold frame, lower slide bricks and drain bricks, characterized in that: The lower mold frame is provided with a slide plate cavity and a nozzle sleeve which are interconnected. The lower slide plate brick is matched and sleeved in the slide plate cavity. The lower nozzle brick is fixedly sleeved in the lower nozzle sleeve. The lower nozzle brick and the lower slide plate brick are butt-jointed with each other. The surface of the lower nozzle brick is provided with an annular positioning platform which is coaxial with its flow steel hole. The outer side of the annular positioning platform is provided with an annular auxiliary groove. The upper end of the lower nozzle brick is provided with a plurality of steps which match the size of the annular positioning platform and correspond in position. Fire mud is provided between the plurality of steps and the annular positioning platform and in the annular auxiliary groove.
2. The anti-seepage steel ladle lower slide brick and drain brick matching mechanism according to claim 1 is characterized by: The bottom surface of the slide cavity is evenly provided with a plurality of long grooves along the length direction of the lower slide brick.
3. The anti-seepage steel ladle lower slide brick and drain brick matching mechanism according to claim 1 is characterized by: The surface of the annular positioning platform close to the inner edge is provided with an annular partition groove armor, and the surface of the slide plate between the flow steel hole and the annular positioning platform is provided with an annular partition groove armor.
4. The anti-seepage steel ladle lower slide brick and drain brick matching mechanism according to claim 3 is characterized by: The butt-jointed step surface of the drain brick is provided with an annular partition groove B, and the annular partition groove B and the annular partition groove A correspond to each other.
5. The anti-seepage steel ladle lower slide brick and drain brick matching mechanism according to claim 1 is characterized by: The lower port of the nozzle sleeve is provided with a rotating lock assembly, through which the lower nozzle brick is locked in the nozzle sleeve.
6. The anti-seepage steel ladle lower slide brick and drain brick matching mechanism according to claim 1 is characterized by: A limiting ring is arranged at the upper end of the nozzle sleeve, and the step at the bottom layer of the lower nozzle brick contacts the limiting ring.
7. The anti-seepage steel ladle lower slide brick and drain brick matching mechanism according to claim 1 is characterized by: Both ends of the slide cavity are provided with supporting inclined platforms, and the middle part of the supporting inclined platforms has a hollow cavity.
8. The anti-seepage steel ladle lower slide brick and drain brick matching mechanism according to claim 1 is characterized by: Through holes are arranged at the four corners of the slide cavity, and magnetic steel columns are fixedly installed in the through holes.