Cooling and spraying device for rear-area roller way of slab continuous casting machine
By installing independent cooling water branch pipes and a reasonable spraying device on the roller conveyor in the rear zone of the slab continuous casting machine, the problem of insufficient cooling water volume was solved, ensuring effective cooling of the rollers and bearing housings, avoiding equipment failure, and improving the reliability and service life of the equipment.
Patent Information
- Application Number
- CN202520163018.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-01-23
AI Technical Summary
The existing slab continuous casting machine has insufficient cooling water in the rear roller conveyor, resulting in inadequate roller cooling. This causes the lubricating grease in the bearing housing to evaporate and solidify, leading to bearing failure and roller seizure, which is detrimental to the normal transport of slabs.
A cooling spray device for the roller conveyor in the rear zone of a slab continuous casting machine was designed. By setting independent cooling water branch pipes and control valves at each roller conveyor, the cooling water volume is reasonably distributed. The cooling water pipes are arranged outside the slag flushing ditch and sealed with flanges and graphite spiral wound gaskets to avoid corrosion and leakage. At the same time, reasonable spray pipes and spray heads are set at the bearing housing and rollers to ensure sufficient cooling water volume and pressure.
This solved the problem of insufficient cooling water, prevented the evaporation and solidification of lubricating grease in the bearing housing and roller seizure, improved the reliability and service life of the equipment, and stabilized the production operation of the slab continuous casting machine.
Smart Images
Figure CN223876046U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of slab caster rear area roller bed technology, especially relates to a slab caster rear area roller bed cooling spraying device. BACKGROUND
[0002] The slab caster rear area roller bed is an important component of the continuous casting machine, mainly composed of a cutting lower roller bed, a cutting rear roller bed, a deburring roller bed, a printing roller bed, a weighing roller bed and a offline roller bed.
[0003] In the prior art, the cooling water pipeline of the continuous casting machine rear area roller bed is a pipeline with a diameter of φ300 drawn from a water valve station, which passes through a slag flushing trench below the roller bed and extends from the cutting lower roller bed to the rear area weighing roller bed.
[0004] Due to the need to supply water for roller cooling and slag flushing at the same time, the amount of roller cooling water is insufficient.
[0005] Insufficient cooling water leads to insufficient roller cooling, and long-term high-temperature baking can cause the lubricating grease in the bearing seat to evaporate and solidify, causing bearing failure and causing the roller to be stuck.
[0006] Therefore, there is an urgent need for a cooling spraying device that can solve the problem of insufficient cooling of the slab caster rear area roller bed leading to high-temperature damage to the rear area roller bed. TECHNICAL CONTENT
[0007] The utility model discloses a slab caster rear area roller bed cooling spraying device to solve the technical problem of insufficient cooling of the slab caster rear area roller bed leading to high-temperature damage to the rear area roller bed.
[0008] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0009] A slab caster rear area roller bed cooling spraying device, the rear area roller bed includes at least one group of sub-work roller beds arranged in sequence according to the process, each group of sub-work roller beds includes a roller bed support for mounting a bearing seat.
[0010] The cooling spray device comprises a cooling water main pipeline connected with the water pipeline of the continuous casting machine, a main pipeline control valve is arranged on the cooling water main pipeline, a plurality of cooling water branch pipelines are arranged downstream of the main pipeline control valve, each of the cooling water branch pipelines is arranged at each group of distribution roller table respectively, a branch pipeline control valve is arranged at the connection between the cooling water main pipeline and each cooling water branch pipeline, a plurality of bearing seat spray pipelines and a plurality of roller spray pipelines are arranged downstream of the branch pipeline control valve of the cooling water branch pipeline, one bearing seat spray pipeline is arranged on each bearing seat at both ends of each roller respectively, and one roller spray pipeline is arranged on one side of each roller in parallel.
[0011] Preferably, a flange is connected between the cooling water main pipeline and the main pipeline control valve, a connecting flange is welded on the cooling water main pipeline, the connecting flange is connected with the flange plate of the main pipeline control valve through connecting bolts, and a graphite winding gasket is arranged at the connection.
[0012] Preferably, the end of the cooling water branch pipeline extends to a slag flushing water ditch, a slag flushing water control valve is arranged at the end of the cooling water branch pipeline, and the slag flushing water control valve is used for regularly discharging slag for the pipeline to avoid blockage caused by excessive accumulation of impurities in the pipeline.
[0013] Preferably, the bearing seat spray pipeline comprises a bend, a butt joint, a metal hose and a spray head connected in sequence, and the pipe diameters of the bend, the butt joint, the metal hose and the spray head are the same.
[0014] Preferably, one end of the bend is connected with the cooling water branch pipeline, the other end of the bend is provided with a turned thread and connected with the metal hose through the butt joint, the other end of the metal hose is connected with the spray head, and the spray head pipe is fixed on the bearing seat through a pipe clamp.
[0015] Preferably, the roller spray pipeline comprises a bend, a butt joint, a metal hose, a spray frame connected in sequence, and the pipe diameters of the bend, the metal hose and the spray frame are the same.
[0016] Preferably, one end of the bend is connected with the cooling water branch pipeline, the other end of the bend is provided with a turned thread and connected with the metal hose through the butt joint, the other end of the metal hose is connected with the spray frame, and both ends of the spray frame are fixed on the roller table support through pipe clamps.
[0017] Preferably, a plurality of butt joints are uniformly welded on the spray frame along the length direction of the spray frame, a spray head is arranged on each butt joint, the spray direction of the spray head is perpendicular to the surface of the roller, and the ratio of the pipe diameter of the spray frame to the pipe diameter of the spray head is 4:1.
[0018] Preferably, the ratio of the pipe diameter of the bearing seat spray pipeline to the pipe diameter of the roller spray pipeline is 3:8.
[0019] Preferably, the pipe clamp is a double-nail pipe clamp.
[0020] Compared with the prior art, the utility model has the beneficial effects that:
[0021] The utility model mainly solves the technical problem of insufficient cooling water of the rear area roller of the continuous casting machine in the prior art, avoids the problems of corrosion and water leakage of the original cooling pipeline, avoids the evaporation and solidification of lubricating grease in the bearing seat, bearing failure, roller lock, large slab drawing force, and the like caused by insufficient cooling, improves the reliability and service life of the equipment, and stabilizes the production and operation of the slab continuous casting machine.
[0022] Specifically, the utility model takes a cooling water pipe from the outer loop network of the factory building, and lays one water pipe on each side of the roller to solve the problem of insufficient water; the utility model sets an independent branch pipe control valve on each roller to realize the separate control of the cooling water of each roller, facilitates equipment maintenance and repair; the utility model sets a deslagging water control valve at the end of the cooling water main pipe to regularly deslag, avoids the problem of blockage caused by the accumulation of impurities in the pipeline; the utility model arranges the pipeline outside the deslagging ditch and adopts flange connection and graphite winding pad sealing to effectively avoid the problems of pipeline corrosion and water leakage; the utility model reasonably arranges the bearing seat spraying pipeline and the roller spraying pipeline and scientifically designs the pipe diameter ratio to ensure the reasonable distribution of the cooling water, ensure sufficient cooling water and appropriate spraying pressure, and improve the cooling effect; the utility model adopts a pipe clamp fixing mode and a standardized connecting piece to facilitate installation and maintenance. BRIEF DESCRIPTION OF DRAWINGS
[0023] Fig. 1 It is a top view structural schematic view of a set of division roller in the preferred embodiment of the utility model;
[0024] Fig. 2 It is a structure schematic view of the bearing seat spraying pipeline and the roller spraying pipeline in the preferred embodiment of the utility model;
[0025] Fig. 3 It is a side view structural schematic view of the preferred embodiment of the utility model.
[0026] In the drawing: 1, roller support; 2, cooling water main pipe; 3, main pipe control valve; 4, cooling water branch pipe; 5, branch pipe control valve; 6, bearing seat spraying pipeline; 7, roller spraying pipeline; 8, deslagging water control valve; 9, elbow pipe; 10, metal hose; 11, pipe clamp; 12, spraying frame; 13, spraying head; 14, bearing seat; 15, roller. DETAILED DESCRIPTION
[0027] The technical scheme in the embodiments of the utility model will be clearly and completely described in the embodiments of the utility model in combination with the drawings, and all other embodiments obtained by the person skilled in the art without making creative labor on the basis of the embodiments in the utility model belong to the range protected by the utility model.
[0028] As shown in Figs. 1-3
[0029] A slab continuous caster rear area roller cooling spraying device, the rear area roller includes a plurality of sub-work roller arranged in sequence according to process, the sub-work roller includes cutting down roller, cutting rear roller, deburring roller, printing roller, weighing roller, offline roller, each group of the sub-work roller includes two roller supports 1 for installing bearing seat 14;
[0030] The cooling spraying device includes cooling water main pipeline 2 connected with the continuous caster outer net water pipeline, the cooling water main pipeline 2 is equipped with main pipeline control valve 3, and a plurality of cooling water branch pipelines 4 are arranged downstream of the main pipeline control valve 3, and each cooling water branch pipeline 4 is correspondingly arranged at each group of sub-work roller.
[0031] The cooling water main pipeline 2 and the main pipeline control valve 3 are connected by flange, the cooling water main pipeline 2 is welded with connecting flange, and is connected with the flange plate of the main pipeline control valve 3 by connecting bolt, and the connecting place is provided with graphite winding pad seal.
[0032] The connecting place of the cooling water main pipeline 2 and each cooling water branch pipeline 4 is provided with branch pipeline control valve 5, a plurality of bearing seat spraying pipelines 6 and a plurality of roller spraying pipelines 7 are arranged downstream of the branch pipeline control valve 5 of the cooling water branch pipeline 4, a bearing seat spraying pipeline 6 is arranged at each bearing seat 14 at both ends of each roller 15, and a roller spraying pipeline 7 is arranged on one side of each roller 15 in parallel; the end of the cooling water branch pipeline 4 is arranged in the slag flushing water ditch, and the slag flushing water control valve 8 is arranged at the end of the cooling water branch pipeline 4, which is used to periodically discharge slag for the pipeline to avoid that too much impurities in the pipeline are accumulated to cause blockage.
[0033] The valve core and the shell of the branch pipeline control valve 5 and the slag flushing water control valve 8 are all made of stainless steel, so that the corrosion resistance is increased, and the service life of the valve is prolonged.
[0034] The bearing seat spray pipeline 6 comprises a bend pipe 9 connected with the cooling water branch pipeline 4, the other end of the bend pipe 9 is turned to screw threads, connected with a metal hose 10 through a female joint, the other end of the metal hose 10 is connected with a spray head 13, the spray head 13 adopts a transition water pipe, the water inlet is thick, the water outlet is thin, and the water nozzle head is slightly flat; the spray head 13 is fixed on a bearing seat 14 through a pipe clamp 11, the pipe clamp 11 adopts a clamping type fixing mode, preventing the pipeline from moving and deviating when the water pressure is large, and affecting the cooling effect; sealing pads are additionally installed between each connection, including the cooling water branch and the bend pipe 9, the bend pipe 9 and the female joint, the female joint and the metal hose 10, and the metal hose 10 and the spray head 13, so as to ensure that the connection is tight and has no leakage. The position and angle of the spray head 13 can be adjusted to meet the cooling requirements of the bearing seat 14. The end of the spray head 13 connected with the metal hose 10 is turned to screw threads, and a sealing pad needs to be additionally installed at the connection to ensure that the connection is tight and has no leakage. In terms of material and specification, the pipe diameters of the bend pipe 9, the female joint, the metal hose 10 and the spray head 13 in the bearing seat spray pipeline 6 are the same, and all adopt a DN15 pipe diameter specification. All components including the spray head 13, the female joint and the like are made of stainless steel to increase corrosion resistance. The welding part of the bend pipe 9 and the cooling water branch pipeline 4 requires full weld, without defects such as slag inclusion, porosity and cracks, and needs to be tested by water pressure to ensure that there is no leakage point.
[0035] The roller spray pipeline 7 comprises a bend pipe 9 connected with the cooling water branch pipeline 4, the other end of the bend pipe 9 is turned to screw threads, connected with a metal hose 10 through a female joint, the other end of the metal hose 10 is connected with a spray frame 12, the end of the spray frame 12 connected with the metal hose 10 is turned to screw threads, and a sealing pad needs to be additionally installed at the connection to ensure that the connection is tight and has no leakage. The spray frame 12 is fixed on the roller way support 1 through a pipe clamp 11, preventing the pipeline from moving and deviating when the water pressure is large, and affecting the cooling effect; a plurality of female joints are welded on the spray frame 12, the female joints are evenly distributed and welded on the spray frame 12 according to the length of the roller 15, and are used for installing the spray head 13 to realize the spraying of cooling water; the cooling water is uniformly sprayed on the roller 15 by adjusting the spraying angle and flow of the spray head 13, and the surface of the roller 15 is subjected to spray cooling and slag flushing.
[0036] In terms of material and specifications, since the roller spray pipeline 7 is mainly used for cooling the entire surface of the roller 15, a larger water flow is required to achieve better cooling effect, while the bearing seat spray pipeline 6 only needs to cool the bearing seat 14, and the cooling area and requirement are relatively small; therefore, the pipe diameter of the roller spray pipeline 7 needs to be larger than that of the bearing seat spray pipeline 6. According to the site conditions, the pipe diameter of the elbow pipe 9, the metal hose 10, and the spray frame 12 in the roller spray pipeline 7 is the same, and all adopt DN40 pipe diameter specifications; the spray head 13 adopts DN10 pipe diameter specifications, the head of the spray head 13 is flattened and a gap of 3-4 mm is reserved for the cooling water to spray; all components including the spray frame 12, the spray head 13, the union joint, etc. are made of stainless steel to increase corrosion resistance; the welding joint of the elbow pipe 9 and the cooling water branch pipeline 4 requires full weld, without defects such as slag inclusion, porosity, and cracks, and needs to be tested for water pressure to ensure no leakage.
[0037] Working principle:
[0038] The water supply of the system starts from the continuous casting machine outer network water pipeline, and the cooling water first enters the cooling water main pipeline 2. The operator opens the main pipeline control valve 3 to make the cooling water enter the entire system. The flange connection is adopted between the main pipeline and the control valve, and the graphite winding gasket is used to ensure the sealing performance.
[0039] After the cooling water passes through the main pipeline, it is distributed to each group of sub-roller tables through a plurality of branch pipelines. These roller tables include cutting-down roller table, cutting-after roller table, deburring roller table, printing roller table, weighing roller table, and offline roller table in the order of working procedures. Each branch pipeline is equipped with a separate control valve, which can adjust the water supply of each roller table according to the needs.
[0040] At each roller table, the cooling water realizes the cooling function through two independent pipelines. The first one is the bearing seat spray pipeline 6, which uses DN15 specification pipeline to realize directional cooling of the bearing seat 14 at both ends of the roller 15 through the DN15 specification spray head 13. The second one is the roller 15 spray pipeline, which uses DN40 specification pipeline to deliver cooling water to the spray frame 12, and then uniformly sprays on the surface of the roller 15 through the DN10 specification spray head 13.
[0041] In order to ensure the long-term stable operation of the system, the cooling water branch pipeline 4 is set at the upper part of the slag flushing water ditch, and the slag flushing water control valve 8 is installed. The operation and maintenance personnel can open the slag flushing water control valve 8 regularly to flush the impurities accumulated in the pipeline into the slag flushing water ditch by using water flow, preventing the pipeline from being blocked.
[0042] The maintenance adjustment of the system is very flexible. The spray head 13 of the bearing seat spray pipeline 6 is fixed on the bearing seat 14 through a double-pin pipe clamp. The maintenance personnel can adjust the position and angle of the spray head 13 by loosening the screws on both sides of the double-pin pipe clamp, so as to optimize the cooling effect of the bearing seat 14. The spray angle and flow of the spray head 13 can be adjusted to ensure that the roller 15 surface is uniformly cooled. Meanwhile, the spray head 13 adopts a detachable design, which is convenient for cleaning and replacement.
[0043] In order to ensure the stability of the system, all pipelines are fixed by pipe clamps 11 to prevent the pipelines from moving due to excessive water pressure. Key components such as valves and pipelines are made of stainless steel, which improves the corrosion resistance and service life of the system. All connections use sealing gaskets or good welding processes to ensure that the entire system has no leakage points.
[0044] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A slab caster rear zone roller cooling spray device, the rear zone roller comprising at least one set of sub-rollers arranged in sequence according to the process, each set of the sub-rollers comprising a roller support (1) for mounting a bearing seat (14); characterized in that, The cooling spray device comprises a cooling water main pipeline (2) connected with the continuous casting machine outer net water pipeline, a main pipeline control valve (3) is arranged on the cooling water main pipeline (2), a plurality of cooling water branch pipelines (4) are arranged downstream of the main pipeline control valve (3), each of the cooling water branch pipelines (4) is arranged at each group of sub-work roller respectively; a branch pipeline control valve (5) is arranged at the connection between the cooling water main pipeline (2) and each of the cooling water branch pipelines (4), a plurality of bearing seat spray pipelines (6) and a plurality of roller spray pipelines (7) are arranged downstream of the branch pipeline control valve (5) of the cooling water branch pipeline (4), one bearing seat spray pipeline (6) is arranged on each bearing seat (14) at both ends of each roller (15) respectively, and one roller spray pipeline (7) is arranged on one side of each roller (15) in parallel.
2. The caster rear zone roller table cooling spray device according to claim 1, characterized in that, The cooling water main pipeline (2) and the main pipeline control valve (3) are connected by flanges, the cooling water main pipeline (2) is welded with a connecting flange, and the connecting flange is connected with a flange plate of the main pipeline control valve (3) through connecting bolts, and a graphite winding gasket is arranged at the connecting position.
3. The caster rear zone roller cooling spray device according to claim 1, characterized in that, The end of the cooling water branch pipeline (4) extends to a slag flushing water ditch, and a slag flushing water control valve (8) is arranged at the end of the cooling water branch pipeline (4).
4. The caster rear zone roller cooling spray device according to claim 1, characterized in that, The bearing seat spray pipeline (6) comprises a bend pipe (9), a pair of thread joints, a metal hose (10) and a spray head (13) connected in sequence; the bend pipe (9), the pair of thread joints, the metal hose (10) and the spray head (13) have the same pipe diameter.
5. The caster rear zone roller cooling spray device according to claim 4, characterized in that, One end of the bend pipe (9) is connected with the cooling water branch pipeline (4), the other end is provided with a turned thread and connected with the metal hose (10) through the pair of thread joints; the other end of the metal hose (10) is connected with the spray head (13), and the spray head (13) is fixed on the bearing seat (14) through a pipe clamp (11).
6. The caster rear zone roller cooling spray device of claim 1, wherein The roller spray pipeline (7) comprises a bend pipe (9), a pair of thread joints, a metal hose (10), a spray frame (12) connected in sequence; the bend pipe (9), the metal hose (10) and the spray frame (12) have the same pipe diameter.
7. The caster rear zone roller cooling spray device according to claim 6, characterized in that One end of the bend pipe (9) is connected with the cooling water branch pipeline (4), the other end is provided with a turned thread and connected with the metal hose (10) through the pair of thread joints; the other end of the metal hose (10) is connected with the spray frame (12), and both ends of the spray frame (12) are fixed on the roller support (1) through the pipe clamp (11) respectively.
8. The caster rear zone roller table cooling spray device according to claim 6, characterized in that A plurality of pair of thread joints are uniformly welded on the spray frame (12) along the length direction of the spray frame (12), and a spray head (13) is arranged on each pair of thread joint; the spray direction of the spray head (13) is perpendicular to the surface of the roller (15); the pipe diameter ratio of the spray frame (12) to the spray head (13) is 4:
1.
9. The caster rear zone roller cooling spray device according to claim 1, characterized in that, The pipe diameter ratio of the bearing seat spray pipeline (6) to the roller spray pipeline (7) is 3:
8.
10. The caster rear zone roller cooling spray device according to claim 5 or 7, characterized in that, The pipe clamp (11) is a double-nail pipe clamp.