A controllable tapping slag retaining mechanism with water outlet tightening

Abstract

The invention discloses a controllable steel outlet slag blocking mechanism with top tightening of a water outlet. A controllable top tightening device is arranged on the outer side of a sliding frame. When the water outlet is replaced offline, a controllable anchor of the controllable top tightener is automatically top tightened in a supporting groove of a controllable water outlet seat, so that the installation depth of the water outlet is accurately controlled and the thickness of the fire mud is ensured. The water outlet is precisely fixed on the outer side of a lower slide plate and a flexible fire mud connection is maintained between the water outlet and the lower slide plate. When the top tightening bolt is tightened with a pneumatic tool, only a relatively small force of the fire mud compression deformation needs to be overcome to complete the installation of the water outlet, so that the brick cavity of the sliding frame is firmly pressed against the back side of the lower slide plate without the occurrence of the hanging phenomenon, and the fluctuation of the surface pressure loading line of the spring pressure plate in the slag blocking process is eliminated. The top tightening degree of the water outlet of the slag blocking mechanism is controllable during installation, the surface pressure is uniform and stable, the safety is good, the force on the slide plate is uniform and the service life is long, the production cost is low, the operation is simple, and the labor intensity is low.

Description

Technical Field

[0001] The invention relates to the field of steelmaking machinery, in particular to a controllable taphole slag blocking mechanism installed at a taphole of a converter. Background Art

[0002] In the modern steelmaking process, in order to reduce the rephosphorization of molten steel, improve the quality of molten steel and reduce the cost of steelmaking, more and more steel mills adopt the tapping gate slide slag blocking technology and use the converter tapping gate slag blocking mechanism to tap the tapping gate. At present, the tapping gate slag blocking mechanism adopts the online replacement method, which improves the steelmaking production efficiency.

[0003] At present, after the slag retaining mechanism replaced online in the market is completely cooled, the slag retaining mechanism is first inspected and maintained, and the upper and lower slides are replaced. Then the surface pressure loading operation of the mechanism is performed. There are two ways to load the surface pressure of the mechanism: the first way is to use a pneumatic tool (commonly known as a "pneumatic cannon") to apply pressure. This method can manually adjust the size of the mechanism surface pressure by adjusting the screw-in depth of the surface pressure bolt, so that the surface pressure loading line of the spring pressure plate is aligned with the surface pressure II gear line (or coincides with the I gear line or the III gear line); the second way is to use an assembly and disassembly cylinder (commonly known as a "hydraulic pliers") for pressurization, such as the patent announcement number CN100519770C and the name of the converter. The tapping outlet sliding water inlet slag stop gate valve device, after the spring pressure plate is compressed by the assembly and disassembly cylinder, the two ends of the spring pressure plate are hooked with a hinged hook to complete the mechanism pressurization. This method cannot manually adjust the size of the mechanism surface pressure. The surface pressure loading line of the spring pressure plate falls at a position between the surface pressure window level Ⅰ and level Ⅲ. Then, the sliding frame and the lower slide are reciprocated up and down 1 to 3 times to check the sliding performance of the slag stop mechanism. In the process of driving the sliding frame and the lower slide, the position of the surface pressure loading line in the surface pressure window remains unchanged. After the surface pressure loading operation of the slag stop mechanism is completed, the sliding surface 314 of the lower slide is subjected to the force F after the sliding surface 314 of the upper slide is tightened. 上 (approximately equal to the surface pressure of the mechanism minus the weight of the sliding frame and the opening and closing frame, generally > 10 tons), the long side 311 and the short side 312 of the back side 315 of the lower slide are respectively subjected to the force N of the sliding frame brick cavity 腔上 and N 腔下 , and N 腔上 +N 腔下 =F 上 ,like Figure 6 , the forces acting on the back side 315 and the sliding surface 314 of the lower slide plate are equal in magnitude and opposite in direction, and are firmly pressed in the lower slide plate brick cavity of the sliding frame. Then install the drain port, such as Figure 2 , install the nozzle with 4-10mm thick fire mud (or fire mud pad) together with the tightening device 35 in the nozzle seat 34 and connect them together with the tightening bolts. The force of the nozzle tightening on the sliding plate is F 水 At the same time, the lower slide plate produces the same水 The reaction force of equal magnitude and opposite direction is transmitted to the sliding frame through the water outlet → tightening device 35 → tightening bolt → water outlet seat 34. After the water outlet is installed, the force on the back of the lower slide 315 subjected to the brick cavity of the sliding frame changes to N. 腔上 +N 腔下 =F 上 -F 水 , the force F of the drain port pressing against the lower slide 水 The size of F is directly related to the thickness of the fire clay between the drain port and the lower slide. When the fire clay is thicker (generally ≥1mm), the drain port and the lower slide are connected by a flexible fire clay like dough. When installing the drain port, only the force required to overcome the smaller fire clay compression deformation is needed. At this time, F 水 The value is much smaller than F 上 , therefore, N 腔上 +N 腔下 ≈F 上 , the forces on the back of the lower slide plate and the sliding surface 314 are basically balanced and firmly pressed in the lower slide plate brick cavity of the sliding frame. When the workers on site use pneumatic tools to install the drain, they are influenced by the psychological effect of "the tighter the better, the thinner the fire mud, the safer", as well as the differences in operation level, pneumatic tools, wind pressure and other factors. They often use pneumatic tools to tighten the top bolts until they can hardly turn, and compress the fire mud of the drain very thinly (considering the unevenness of the surface manufacturing of the lower slide plate and the drain and the composition of the fire mud itself, generally ≤0.5mm).

[0004] The disadvantages of this type of drain installation method on the market are: (1) The tightening bolts are over-tightened, causing the connection between the drain and the lower slide to change from a flexible connection when the fire clay is thicker to a rigid connection with direct contact between the mother and child. The force F of the drain pressing against the lower slide is 水 Rapidly increase, when F 水 >F 上 When F 水 -F 上 Under the action of the force, the sliding frame and the nozzle seat 34 will be pulled up by the tightening device 35 and the tightening bolts, causing the upper part of the lower slide brick cavity and the long side 311 of the lower slide back 315 to be partially suspended, and the lower short side 312 of the lower slide brick cavity to be completely suspended, resulting in a brick cavity gap 301 of different sizes between the lower slide back 315 and the brick cavity. Figure 2, when the force on the sliding surface 314 of the lower slide plate remains basically unchanged and the force on the back surface 315 of the lower slide plate drops sharply, the force on the lower slide plate is seriously unbalanced and will cause the plate surface to break and crack, resulting in a decrease in the safety and life of the slide plate. (2) When the tensioner 35 and the tensioning bolt pull up the sliding frame, their force is transmitted to the opening and closing frame through the sliding frame → movable slide rail → fixed slide rail → opening and closing frame, and the opening and closing frame is lifted synchronously, causing the surface pressure of the slag blocking mechanism to change. In the process of driving the sliding frame to make the lower slide plate and the water outlet change from the open state to the closed state, the surface pressure loading line of the surface pressure window at the bottom of the opening and closing frame fluctuates significantly downward and the fluctuation value continues to increase, gradually moving down from the previous II gear line to the III gear line or even lower. When the slide plate is completely closed, the fluctuation value reaches the maximum, and in severe cases it reaches more than 1.5 mm, making the surface pressure of the mechanism uneven and fluctuating, and in severe cases it reaches more than 10%, resulting in a serious reduction in the safety performance of the mechanism. The fluctuation of the surface pressure loading line further confirms that the separation and suspension of the sliding frame brick cavity and the back of the lower slide plate 315 occurred due to the over-tight installation of the water outlet and the uncontrollable installation depth. (3) As a remedial measure, for the slag retaining mechanism pressurized by pneumatic tools, the pneumatic tools are often used to slightly adjust the surface pressure bolts to perform secondary surface pressure loading operations on site to reduce the fluctuation of the surface pressure loading line. If the adjustment amount of the surface pressure bolts is too small, the rigid connection between the water outlet and the lower slide plate cannot be changed. Due to F 水The value of is reduced to a limited extent, and the problem of unbalanced force on the back side 315 and the sliding surface 314 of the lower slide plate cannot be solved, nor can the separation and suspension of the back side 315 of the lower slide plate from the brick cavity of the sliding frame and the resulting fluctuation of the surface pressure of the mechanism be prevented; if the adjustment amount of the surface pressure bolt is too large, because the thickness of the fire mud of the water outlet has been compressed to the limit, although the fluctuation problem of the surface pressure loading line is solved, it will cause a connection gap between the water outlet and the lower slide plate due to the serious shortage of fire mud, thereby causing the occurrence of steel leakage accident. Limited by the current on-site operating conditions, the surface pressure fluctuation is only reduced by adjusting the surface pressure bolt, and the unbalanced force on the back side 315 and the sliding surface 314 of the lower slide plate caused by the over-tight installation of the water outlet and the uncontrollable installation depth, as well as the fluctuation of the surface pressure of the mechanism caused by the separation and suspension of the back side 315 of the lower slide plate from the brick cavity of the sliding frame, and the secondary surface pressure loading operation is easy to cause a new connection gap problem between the water outlet and the lower slide plate due to the serious shortage of fire mud, which is easy to cause steel leakage accident, and the secondary surface pressure loading operation also increases the labor intensity of workers. (4) For the slag blocking mechanism using the compression cylinder pressurization method, since it is impossible to make a secondary adjustment of the mechanism surface pressure loading, the back side 315 and the sliding surface 314 of the lower slide plate of the slag blocking mechanism are subjected to uneven force, the back side 315 of the lower slide plate is suspended, and the mechanism surface pressure fluctuates unevenly due to the over-tight installation of the water outlet and the uncontrollable installation depth. No remedial measures can be taken. (5) When the tightening bolt is over-tightened, the pressure of the tightening bolt on the ear of the tightener 35 will increase sharply. In severe cases, the pressure is more than 10 tons. In this way, after tightening the tightener 35 50-60 times with a pneumatic tool, the ear of the tightener 35 droops and deforms. In severe cases, the deformation height reaches 8-12mm. At the same time, the cylinder of the tightener 35 produces serious elliptical deformation due to the left and right tensile force of the ear, which causes the tightener 35 to be scrapped prematurely, reducing the service life of the tightener 35 and increasing the production cost. (6) The double-eared tighteners 35 used in the market are all arranged symmetrically in the slag blocking mechanism. After the corresponding holes are opened under the ears of the tightener 35, the protective plate 33 matched with the tightener 35 causes the distance between the holes and the edges of the protective plate 33 on both sides to be too small, which affects the structural strength of the protective plate 33. The protective plate 33 often breaks due to the low strength, which seriously affects the service life of the protective plate 33 and increases the production cost. (7) At present, the problems of uneven force on the back side 315 and the sliding surface 314 of the lower slide plate of the slag blocking mechanism, the suspension of the back side 315 of the lower slide plate, the uneven fluctuation of the mechanism surface pressure, and the drooping and deformation of the ears of the tightener 35 due to the over-tight installation of the downspout and the inability to control the installation depth have long existed and remain unresolved. This is a technical problem that has long plagued the steelmaking industry. Summary of the invention

[0005] In order to solve the above problems, the present invention proposes a controllable tapping slag blocking mechanism with a lower water inlet tightening.

[0006] The technical solution of the present invention is: a controllable tapping slag blocking mechanism with a lower water outlet, comprising a fixed frame, an opening and closing frame, a sliding frame, a controllable tightening device, a controllable water outlet seat, a controllable protective plate, an upper slide plate, a lower slide plate, and a lower water outlet, wherein:

[0007] An opening and closing frame is arranged outside the fixed frame, a sliding frame is arranged between the opening and closing frame and the fixed frame, movable slide rails and fixed slide rails are arranged on both sides of the sliding frame and the opening and closing frame respectively, an upper slide plate and a lower slide plate are arranged in the brick cavity of the fixed frame and the sliding frame respectively, a spring chamber, a spring, a spring pressure plate, a surface pressure bolt and a side wing guard plate are symmetrically arranged on both sides of the opening and closing frame, and the surface pressure bolt passes through the side wing guard plate, the spring pressure plate and the spring chamber in sequence and is fixed to the fixed frame;

[0008] The water outlet is installed on the outside of the lower slide plate, the water outlet and the lower slide plate are connected together in a male-female joint or a flat joint, and a layer of fire clay is filled between the water outlet and the connecting surface of the lower slide plate;

[0009] A controllable tightening device is provided at the water outlet on the outer side of the sliding frame, and the controllable tightening device includes a controllable tightening device, a tightening bolt, a controllable water outlet seat and a controllable protective plate. The controllable tightening device includes a cylinder body and an annular convex edge coaxially arranged at the outer end of the cylinder body, the outer side surface of the annular convex edge is provided with no less than two ear protrusions, and a controllable anchor is correspondingly provided on the inner side of the ear protrusion. The controllable anchor is fixedly connected to the cylinder body and the ear protrusion as a whole, and a positioning through hole is provided in the middle of the controllable anchor and the ear protrusion, and the middle hole of the controllable protective plate is surrounded by fan-shaped holes with the same number as the controllable anchor, and the middle hole of the controllable water outlet seat is surrounded by supporting grooves with the same number and corresponding positions as the fan-shaped holes, and a round nut is inlaid in the middle of the supporting groove. The controllable water outlet seat and the controllable protective plate are connected and fixed together with the sliding frame with bolts, and the tightening bolt passes through the positioning through hole on the controllable tightening device and is connected to the round nut in the middle of the supporting groove of the controlled water outlet seat, so that the controllable anchor of the controllable tightening device is tightened in the supporting groove of the controlled water outlet seat.

[0010] Preferably, the number of the ear protrusions and the controllable anchors on the controllable tightener is set to two, and the two ear protrusions and the controllable anchors are arranged in a vertically symmetrical manner, and the two ear protrusions and the controllable anchors correspond to the longitudinal center axis of the slag blocking mechanism.

[0011] Preferably, the fan-shaped holes on both sides of the controllable protective plate are the same size as the supporting grooves on both sides of the controllable water inlet seat, and are tightly attached to each other up and down to form a fan-shaped groove. The cross-section of the controllable anchor is fan-shaped, and the sizes of the ear protrusion, fan-shaped groove, and controllable anchor decrease successively. There is an installation gap of 5-12mm between the fan-shaped groove and the controllable anchor.

[0012] Preferably, a transition step is provided in the middle of the water outlet, the controllable anchor of the controllable tightening device is tightened on the supporting groove of the controllable water outlet seat, and the end face of the cylinder of the controllable tightening device is tightened on the transition step of the water outlet, so as to push and accurately control the pushing depth of the water outlet, keep the fire mud thickness between the water outlet and the lower slide plate stable between 1-3mm, and stick closely to the outer side of the lower slide plate.

[0013] Preferably, the water outlet and the lower slide plate are connected in a flat-to-flat manner, filled with fire clay and connected together.

[0014] Preferably, two upper and lower surface pressure windows of equal size and symmetrical position are provided on the outside of each spring chamber of the opening and closing frame, and their symmetrical center plane coincides with the symmetrical center plane of the spring chamber. Each surface pressure window is provided with level line I, level line II and level line III as surface pressure level lines, and the distance between every two surface pressure level lines is 1 mm, corresponding to the surface pressure window. A surface pressure loading line is provided on the outside of each spring pressure plate, and after the mechanism is pressurized, the surface pressure loading line is flush with level line II.

[0015] The beneficial technical effects of the present invention are:

[0016] (1) The present invention sets a controllable tightening device on the outside of the sliding frame. When the water outlet is replaced offline, under the condition that the personnel, pneumatic tools and wind pressure installation conditions remain unchanged, the controllable tightening device can automatically control the installation depth and fire mud thickness of the water outlet, accurately fix the water outlet on the outside of the lower slide plate, and ensure that the tightening bolts only need to overcome the smaller fire mud compression deformation force to complete the installation of the water outlet. After the installation of the water outlet is completed, it is ensured that the sliding frame brick cavity still firmly presses the lower slide plate on the upper slide plate without hanging, avoiding the occurrence of the board surface breakage and cracking caused by the serious imbalance of force on the lower slide plate. The steel mouth slag retaining mechanism of the present invention has uniform and stable surface pressure and good safety. The slide plate is uniformly stressed and has a long service life, low production cost, simple operation, low labor intensity, and controllable tightening of the water outlet installation. It is more effective for the slag retaining mechanism using a compression cylinder pressurization method. It is an ideal upgraded replacement product for the current steel outlet slag retaining device.

[0017] (2) The present invention provides a controllable tightening device on the outer side of the sliding frame. When the water outlet of the slag retaining mechanism is installed offline, the controllable tightening device of the controllable tightening device is installed together with the water outlet in the controllable water outlet seat of the tightening device and locked together with a tightening bolt. In the process of tightening the tightening bolt with a pneumatic tool, the controllable anchor of the controllable tightening device is automatically centered and tightened on the supporting groove on the outer side of the controllable water outlet seat, and the controllable tightening device and the water outlet are accurately fixed on the outer side of the lower slide plate and the excess fire mud is squeezed out, so that the thickness of the fire mud is stabilized at 1-3mm, and the flexible connection between the water outlet and the lower slide plate by the fire mud is ensured, so that the tightening bolt only needs to overcome the smaller force of the fire mud compression deformation to complete the installation of the water outlet, and the occurrence of the water outlet fire mud being too thin or the installation being too tight due to excessive tightening of the tightening bolt with a pneumatic tool is eliminated, and the force F acting on the water outlet to tighten on the sliding plate is greatly reduced. 水 , so that the upper slide acts on the sliding surface of the lower slide 上 The force acting on the back of the lower slide with the sliding frame brick cavity is N 腔上 +N 腔下 It basically maintains balance, and the sliding frame brick cavity firmly presses the lower slide plate onto the upper slide plate. When performing slag blocking operation at the steel outlet, the position of the surface pressure loading line of the spring pressure plate remains stable without up and down floating, which greatly improves the stability and safety of the surface pressure of the slag blocking mechanism and effectively improves the working stability and service life of the lower slide plate.

[0018] (3) The controllable tightening device arranged on the outside of the sliding frame greatly reduces the force of the tightening bolts on the ears of the controllable tightener. The ears and controllable anchors of the controllable tightener are arranged on the longitudinal axis of the slag retaining mechanism, arranged and connected together in a vertically symmetrical manner, so that the ears and controllable anchors are away from the surrounding connecting bolts and the edges of the two sides of the controllable protective plate. The ears and controllable anchors of the controllable tightener are larger in size and stronger in structure. The strength of the double-ear controllable tightener structure fully meets the use requirements of the slag retaining mechanism, and its service life is increased by more than 2 times, reducing the production cost. Compared with the tightener with three ears, the number of workers who use pneumatic tools to tighten the tightening bolts is reduced, thereby reducing the labor intensity of workers.

[0019] (4) The ear protrusion of the controllable tensioner and the controllable anchor are set on the longitudinal center axis of the slag blocking mechanism and are arranged symmetrically up and down. The fan-shaped holes of the controllable protective plate and the supporting grooves of the controllable nozzle seat are also arranged symmetrically up and down, and are far away from the surrounding connecting bolts and the edges of both sides of the controllable protective plate. While increasing the size of the fan-shaped holes of the controllable protective plate and the supporting grooves of the controllable nozzle seat, the service life of the controllable protective plate and the controllable nozzle seat is improved. After the offline operation of the slag blocking mechanism is completed, fire mud is filled in the gap around the controllable anchor, which effectively protects the controllable anchor under the ear protrusion of the controllable tensioner from damage by steel slag during the slag blocking process.

[0020] (5) The drain port and the lower slide plate are connected by flat-to-flat butt joint, filled with fire clay and connected together, which can effectively reduce the influence of the lower slide plate and drain port on the fire clay thickness caused by excessive errors in the production process, and ensure the installation accuracy of the drain port. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a front view schematic diagram of the slag blocking mechanism of the present invention (the front view of the current slag blocking mechanism is basically the same as the front view of the slag blocking mechanism of the present invention);

[0022] Figure 2 The current slag blocking mechanism is Figure 1 A cross-sectional schematic diagram of the BB position;

[0023] Figure 3 yes Figure 2 A magnified view at K;

[0024] Figure 4 It is a cross-sectional schematic diagram of the left and right tightening devices of the current slag blocking mechanism after being damaged;

[0025] Figure 5 It is a schematic diagram of the sliding frame, the downspout seat and the protective plate of the current slag retaining mechanism connected together;

[0026] Figure 6 It is a cross-sectional diagram of the lower slide plate and the water outlet and a force diagram of the lower slide plate;

[0027] Figure 7 It is a longitudinal partial cross-sectional schematic diagram of the slag blocking mechanism of the present invention (the controllable protective plate and the side wing protective plate are hidden);

[0028] Figure 8 yes Figure 7 Enlarged view of point C;

[0029] Fig. 9 yes Figure 7 A magnified view at W of FIG.

[0030] Fig.10 It is a schematic diagram of a three-dimensional structure in which a sliding frame, a controllable nozzle seat and a controllable protective plate of the slag blocking mechanism of the present invention are connected together (a partial section of the lower part of the middle hole of the controllable protective plate);

[0031] Fig.11 It is a three-dimensional structural schematic diagram (1 / 4 section) of the controllable tightener and the tightening bolts of the present invention connected together.

[0032] In the figure, 10. fixed frame, 11. upper slide, 20. opening and closing frame, 201. surface pressure window, 202. I gear line, 203. II gear line, 204. III gear line, 21. surface pressure bolt, 22. fixed slide rail, 23. spring pressure plate, 231. surface pressure loading line, 24. side wing guard plate, 25. spring, m. deformation height, 30. sliding frame, 301. brick cavity gap, 31. lower slide, 311. long side, 312. short side, 313. fire clay, 314. sliding surface, 315. back of slide plate, 316. nozzle, 32. movable slide rail, 33. protective plate, 34. nozzle seat, 35. tightener, 36. tightening bolt, 37. controllable nozzle seat, 371. support groove, 372. Round nut, 38. Controllable tightener, 381. Ear, 382. Controllable anchor, 383. Cylinder, 384. Installation gap, 39. Controllable protective plate, 391. Fan-shaped hole, 45. Drain, 415. Transition step, F 上 -Tightening force of upper slide plate on lower slide plate, F 水 -Tightening force of the drain port on the lower slide, N 腔上 -Sliding frame brick cavity pressure on the long side of the lower slide, N 腔下 -The sliding frame brick cavity exerts pressure on the short side of the lower sliding plate. DETAILED DESCRIPTION

[0033] Example 1, see the attached specification Figure 1 - 11. A controllable steel outlet slag retaining mechanism with a tightening function for a water outlet, comprising a fixed frame 10, an opening and closing frame 20, a sliding frame 30, a controllable tightener 38, a controllable water outlet seat 37, a controllable protective plate 39, an upper slide plate 11, a lower slide plate 31 and a water outlet 45. The opening and closing frame 20 is arranged outside the fixed frame 10, and the sliding frame 30 is arranged between the opening and closing frame 20 and the fixed frame 10. Movable slide rails 32 and fixed slide rails 22 are arranged on both sides of the sliding frame 30 and the opening and closing frame 20 respectively. An upper slide plate 11 and a lower slide plate 31 are arranged in the brick cavities of the fixed frame 10 and the sliding frame 30 respectively. A spring 25 chamber, a spring 25, a spring pressure plate 23, a surface pressure bolt 21 and a side wing guard plate 24 are symmetrically arranged on both sides of the opening and closing frame 20. The surface pressure bolt 21 passes through the side wing guard plate 24, the spring pressure plate 23 and the spring 25 chamber in sequence and is fixed to the fixed frame 10.

[0034] The water outlet 45 is installed on the outside of the lower slide plate 31 , and the water outlet 45 and the lower slide plate 31 are connected together in a male-female joint or a flat joint manner, and a layer of fire clay 313 is filled between the connecting surface of the water outlet 45 and the lower slide plate 31 .

[0035] A controllable tightening device is provided at the water outlet 45 on the outer side of the sliding frame 30, and the controllable tightening device includes a controllable tightening device 38, a tightening bolt 36, a controllable water outlet seat 37 and a controllable protective plate 39. The controllable tightening device 38 includes a cylinder 383 and an annular convex edge coaxially arranged at the outer end of the cylinder 383, and the outer side surface of the annular convex edge is provided with no less than two ear protrusions 381, and the inner side of the ear protrusion 381 is correspondingly provided with a controllable anchor 382, ​​and the controllable anchor 382 is fixedly connected with the cylinder 383 and the ear protrusion 381 to form a whole, and a positioning through hole is provided in the middle of the controllable anchor 382 and the ear protrusion 381, and a positioning through hole is provided in the middle of the controllable anchor 382 and the ear protrusion 381, and a positioning through hole is provided around the middle hole of the controllable protective plate 39. The controllable nozzle seat 37 has the same number of fan-shaped holes 391, and the periphery of the middle hole of the controllable nozzle seat 37 is provided with supporting grooves 371 of the same number and corresponding positions as the fan-shaped holes 391. A round nut 372 is embedded in the middle of the supporting groove 371. The round nut 372 can extend the service life of the controllable nozzle seat 37. The controllable nozzle seat 37 and the controllable protective plate 39 are connected and fixed to the sliding frame 30 by bolts. The tightening bolt 36 passes through the positioning through hole on the controllable tightener 38 and is connected to the round nut 372 in the middle of the supporting groove 371 of the controllable nozzle seat 37, so that the controllable anchor 382 of the controllable tightener 38 is tightened in the supporting groove 371 of the controllable nozzle seat 37.

[0036] The number of ear protrusions 381 and controllable anchors 382 on the controllable tightener 38 is preferably set to two, and the two ear protrusions 381 and controllable anchors 382 are arranged in a vertically symmetrical manner. The two ear protrusions 381 and the controllable anchor 382 correspond to the longitudinal center axis of the slag retaining mechanism. This arrangement increases the distance from the ear protrusion 381 and the controllable anchor 382, ​​the fan-shaped hole 391, and the support groove 371 to the surrounding bolts and the two side edges of the protective plate 33, thereby improving the service life of the controllable protective plate 39 and the controllable water outlet seat 37.

[0037] The fan-shaped holes 391 on both sides of the controllable protective plate 39 are the same size as the supporting grooves 371 on both sides of the controllable water nozzle seat 37 and are tightly attached to each other up and down to form a fan-shaped groove. The cross-section of the controllable anchor 382 is fan-shaped, and the sizes of the ear protrusion 381, the fan-shaped groove and the controllable anchor 382 decrease successively. There is a 5-12mm installation gap 384 between the fan-shaped groove and the controllable anchor 382, ​​and the gap is filled with fire mud 313, which effectively protects the controllable anchor 382 under the ear protrusion 381 of the controllable tightener 38 from damage by steel slag during the slag blocking process.

[0038] A transition step 415 is provided in the middle of the water outlet 45, and the controllable anchor 382 of the controllable tightening device 38 is pressed against the supporting groove 371 of the controllable water outlet seat 37, and the end face of the cylinder 383 of the controllable tightening device 38 is pressed against the transition step 415 of the water outlet 45, so as to push and accurately control the pushing depth of the water outlet 45, keep the thickness of the fire mud 313 between the water outlet 45 and the lower slide plate 31 stable between 1-3mm, and stick to the outer side of the lower slide plate 31, thereby ensuring the flexible connection between the water outlet 45 and the lower slide plate 31 connected by the fire mud 313, so that the brick cavity of the sliding frame 30 is firmly pressed against the back of the upper slide plate 11.

[0039] The water outlet 45 and the lower slide plate 31 are connected flat to flat, filled with fire clay 313, and connected together, which effectively reduces the impact of excessive errors in the production process of the lower slide plate 31 and the water outlet 45 on the thickness of the fire clay 313 and ensures the installation accuracy of the water outlet 45.

[0040] The outer side of each spring 25 chamber of the opening and closing frame 20 is provided with two upper and lower surface pressure windows 201 of equal size and symmetrical position, and the symmetric center plane thereof coincides with the symmetric center plane of the spring 25 chamber. Each surface pressure window 201 is provided with a Ⅰ stop line 202, a Ⅱ stop line 203, and a Ⅲ stop line 204 as surface pressure stop lines, and the distance between each two surface pressure stop lines is 1mm, corresponding to the surface pressure window 201, and a surface pressure loading line 231 is provided on the outer side of each spring pressure plate 23. After the mechanism is pressurized, the surface pressure loading line 231 is flush with the Ⅱ stop line 203.

[0041] The use process and principle of the present invention:

[0042] In the first step, the slag blocking mechanism is replaced online and completely cooled, and the slag blocking mechanism is operated offline. After the upper slide plate 11 and the lower slide plate 31 are replaced and the slag blocking mechanism is pressurized, the surface pressure bolt 21 is tightened with a pneumatic tool and the surface pressure loading line 231 of the spring pressure plate 23 is aligned with the II gear line 203 of the pressurized window of the opening and closing frame 20 (or other gear lines); in the second step, the water outlet 45 is installed, and the controllable top tightener 38 of the top tightening controllable device is installed together with the water outlet 45 in the controllable water outlet seat 37 of the top tightening controllable device and locked with the top tightening bolt 36. In the process of tightening the top bolt with a pneumatic tool, the controllable top tightener 38 The water outlet 45 is pushed forward together in the direction of the lower slide plate 31, and the excess fire mud 313 between the water outlet 45 and the lower slide plate 31 is continuously compressed and squeezed out; the third step is to precisely fix the controllable tensioner 38 and the water outlet 45 on the outer side of the lower slide plate 31 and stabilize the thickness of the fire mud 313 at 1-3mm at the moment when the controllable anchor 382 of the controllable tensioner 38 presses the supporting groove 371 of the controllable water outlet seat 37, thereby ensuring the flexible connection between the water outlet 45 and the lower slide plate 31 connected by the fire mud 313, so that the tensioning bolt 36 only needs to overcome the smaller compression deformation force of the fire mud 313 to complete the installation of the water outlet 45, thereby eliminating the excessive use of wind tools. The occurrence of the situation that the fire mud 313 of the water outlet 45 is too thin or the installation is too tight due to tightening the tightening bolts 36. After the water outlet 45 is installed, the brick cavity of the sliding frame 30 still firmly presses the lower slide plate 31 on the upper slide plate 11, avoiding the occurrence of plate surface breakage and cracks caused by serious imbalance of force on the lower slide plate 31, and effectively improving the working stability and service life of the lower slide plate 31. The fourth step is to drive the sliding frame 30 and the lower slide plate 31 and the water outlet 45 to reciprocate when the online steel outlet slide plate is used to block slag and discharge steel, so that the lower slide plate 31 and the water outlet 45 are in an open or closed state, and the surface pressure loading line 231 of the spring pressure plate 23 is at The position remains stable without up and down floating, which greatly improves the stability and safety of the surface pressure of the slag blocking mechanism; the fifth step is to relieve the pressure on the slag blocking mechanism when offline maintenance is carried out after the slag blocking is completed, and then the controllable tensioner 38, the slide plate and the water outlet 45 are dismantled and cleaned, with emphasis on cleaning the controllable anchor 382 of the controllable tensioner 38 and the fire mud 313 in the support groove 371 of the water outlet seat, and then the slide plate is installed, the mechanism is pressurized, and the water outlet 45 is installed, and the surrounding gaps of the controllable anchor 382 of the controllable tensioner 38 are filled with fire mud 313 to prevent steel slag from damaging the controllable anchor 382 and to ensure the normal use of the controllable tensioner 38.

[0043] The above embodiments are only descriptions of preferred implementation modes of the present invention. Without departing from the design spirit of the present invention, various modifications and equivalent improvements made to the technical solutions of the present invention by ordinary technicians in this field should all be within the protection scope of the claims of the present invention.

Claims

1. A controllable tapping slag retaining mechanism for a water outlet, comprising a fixed frame, an opening and closing frame, a sliding frame, a controllable tightening device, a controllable water outlet seat, a controllable protective plate, an upper slide plate, a lower slide plate, and a water outlet, wherein: An opening and closing frame is arranged outside the fixed frame, a sliding frame is arranged between the opening and closing frame and the fixed frame, movable slide rails and fixed slide rails are arranged on both sides of the sliding frame and the opening and closing frame respectively, an upper slide plate and a lower slide plate are arranged in the brick cavity of the fixed frame and the sliding frame respectively, a spring chamber, a spring, a spring pressure plate, a surface pressure bolt and a side wing guard plate are symmetrically arranged on both sides of the opening and closing frame, and the surface pressure bolt passes through the side wing guard plate, the spring pressure plate and the spring chamber in sequence and is fixed to the fixed frame; The water outlet is installed on the outside of the lower slide plate, the water outlet and the lower slide plate are connected together in a male-female joint or a flat joint, and a layer of fire clay is filled between the water outlet and the connecting surface of the lower slide plate; A controllable tightening device is provided at the water outlet on the outer side of the sliding frame, and the controllable tightening device includes a controllable tightening device, a tightening bolt, a controllable water outlet seat and a controllable protective plate. The controllable tightening device includes a cylinder body and an annular convex edge coaxially arranged at the outer end of the cylinder body, and the outer side surface of the annular convex edge is provided with no less than two ear protrusions, and the inner side of the ear protrusion is correspondingly provided with a controllable anchor, the controllable anchor is fixedly connected to the cylinder body and the ear protrusion as a whole, and a positioning through hole is provided in the middle of the controllable anchor and the ear protrusion, and the periphery of the middle hole of the controllable protective plate is provided with fan-shaped holes with the same number as the controllable anchor, and the periphery of the middle hole of the controllable water outlet seat is provided with supporting grooves with the same number and corresponding positions as the fan-shaped holes, and a round nut is inlaid in the middle of the supporting groove, the controllable water outlet seat and the controllable protective plate are connected and fixed together with the sliding frame with bolts, and the tightening bolt passes through the positioning through hole on the controllable tightening device and is connected to the round nut in the middle of the supporting groove of the controlled water outlet seat, so that the controllable anchor of the controllable tightening device is tightened in the supporting groove of the controlled water outlet seat; The number of the ear protrusions and the controllable anchors on the controllable tightener is set to two, and the two ear protrusions and the controllable anchors are arranged in a vertically symmetrical manner, and the two ear protrusions and the controllable anchors correspond to the longitudinal center axis of the slag blocking mechanism; The fan-shaped holes on both sides of the controllable protective plate are the same size as the supporting grooves on both sides of the controllable water inlet seat, and are tightly attached to each other up and down to form a fan-shaped groove. The cross-section of the controllable anchor is fan-shaped, and the sizes of the ear protrusion, fan-shaped groove, and controllable anchor decrease successively. There is an installation gap of 5-12mm between the fan-shaped groove and the controllable anchor.

2. The controllable tapping slag retaining mechanism with a lower water outlet tightening according to claim 1 is characterized by: A transition step is arranged in the middle of the water outlet, and the controllable anchor of the controllable tightener is pressed against the supporting groove of the controllable water outlet seat, and the cylinder end face of the controllable tightener is pressed against the transition step of the water outlet, so as to push and accurately control the pushing depth of the water outlet, keep the fire mud thickness between the water outlet and the lower slide plate stable between 1-3mm, and stick closely to the outer side of the lower slide plate.

3. The controllable tapping slag retaining mechanism with a lower water outlet tightening according to claim 1 is characterized by: The water outlet and the lower slide plate are connected in a flat-to-flat manner and are filled with fire clay.

4. The controllable tapping slag retaining mechanism with a lower water outlet tightening according to claim 1 is characterized by: Two upper and lower surface pressure windows of equal size and symmetrical position are arranged on the outer side of each spring chamber of the opening and closing frame, and their symmetrical center plane coincides with the symmetrical center plane of the spring chamber. Each surface pressure window is provided with level line I, level line II and level line III as surface pressure level lines, and the distance between each two surface pressure level lines is 1mm, corresponding to the surface pressure window. A surface pressure loading line is arranged on the outer side of each spring pressure plate, and after the mechanism is pressurized, the surface pressure loading line is flush with level line II.

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