High-pressure water dephosphorization device for hot-rolled steel billets

Abstract

The utility model discloses a hot-rolled steel billet high-pressure water dephosphorization device which comprises a guide roller conveying mechanism and a dephosphorization box erected on the outer side of the guide roller conveying mechanism, and the two ends of the dephosphorization box are provided with an inlet and an outlet for the guide roller conveying mechanism to operate respectively. A primary dephosphorization mechanism, a dephosphorization brush roll mechanism and a secondary dephosphorization mechanism are arranged at the top and the bottom of the dephosphorization box between the inlet and the outlet respectively, the primary dephosphorization mechanism and the secondary dephosphorization mechanism are the same in structure and each comprise a water inlet main pipe and a dephosphorization pipe, the dephosphorization pipes are installed in the dephosphorization box, and spraying regulators are installed at the two ends of each dephosphorization pipe. A plurality of high-pressure nozzles are installed on the side, close to the guide roller conveying mechanism, of the dephosphorization pipe at equal intervals, and the dephosphorization pipe is communicated with the water inlet main pipe through a communicating pipe. According to the device, oxide skin on the surface and the bottom surface of a steel billet can be thoroughly cleaned, a good phosphorus removal effect is achieved, the number of high-pressure nozzles for spraying water can be matched with the width of the steel billet, and waste of spraying water is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel rolling production equipment, and in particular relates to a high-pressure water dephosphorization device for hot-rolled steel billets. Background Art

[0002] High-pressure water dephosphorization technology is a phosphorus removal method that uses high-pressure water as a medium. Its basic principle is to use high-pressure water to flush away iron oxide particles on the surface of steel. The impact and stripping force generated by the high-pressure water can effectively remove surface oxides, not only reducing pollutant emissions but also improving the surface quality of the steel. In recent years, high-pressure water dephosphorization technology has been widely used in steel rolling production. Due to its ability to remove oxides without generating secondary pollution, low cost, high efficiency, and stable quality, it has been favored by the steel rolling industry. High-pressure water dephosphorization technology is also flexible and controllable, and can be adjusted according to the needs of different steels to meet their surface quality requirements. The high-pressure water dephosphorization device used in the prior art includes a roller transmission mechanism and a dephosphorization box. After the roller transmission mechanism carries the steel billet into the dephosphorization box, the dephosphorization water spraying mechanism arranged in the dephosphorization box performs high-pressure water flushing on the surface of the steel billet, thereby removing the oxide scale and other impurities on the surface of the steel billet by spraying. After spraying and dephosphorization, the steel billet is moved out of the dephosphorization box through the roller transmission mechanism. The above-mentioned dephosphorization device has the following shortcomings during use: First, the structural design of the dephosphorization spraying device is unreasonable. After the steel billet is sprayed, the oxide scale is not removed thoroughly, and manual assistance is required for subsequent dephosphorization; second, the number of nozzles arranged on the existing spray pipe is fixed, but since the specifications of the steel billet may have different widths, during the spraying process of the spray pipe, regardless of the width of the steel billet, the nozzles on the spray pipe will spray water. If the width of the steel billet is less than the number of nozzles arranged, all the nozzles will spray water, which will cause a large amount of water resource waste. Therefore, it is an objective need to develop a high-pressure water dephosphorization device for hot-rolled steel billets with a reasonable structure, significant dephosphorization effect, and good water-saving effect. Summary of the Invention

[0003] The purpose of the utility model is to provide a high-pressure water dephosphorization device for hot-rolled steel billets which has a reasonable structure, significant dephosphorization effect and can achieve good water-saving effect.

[0004] The purpose of the present utility model is achieved in this way, including a guide roller conveying mechanism and a dephosphorization box mounted on the outside of the guide roller conveying mechanism, the two ends of the dephosphorization box are respectively provided with an inlet and an outlet for the operation of the guide roller conveying mechanism, the top and bottom of the dephosphorization box between the inlet and the outlet are respectively provided with a primary dephosphorization mechanism, a dephosphorization brush roller mechanism and a secondary dephosphorization mechanism, the primary dephosphorization mechanism and the secondary dephosphorization mechanism have the same structure, both include a water inlet main pipe and a dephosphorization pipe, the dephosphorization pipe is installed in the dephosphorization box, spray regulators are installed at both ends of the dephosphorization pipe, a plurality of high-pressure nozzles are installed at equal intervals on the dephosphorization pipe close to the side of the guide roller conveying mechanism, the dephosphorization pipe is connected with the water inlet main pipe through a connecting pipe, and a connecting valve is installed on the connecting pipe.

[0005] Compared with the existing technology, the advantages of this device are: First, this device optimizes the internal structure of the dephosphorization box, and a first-level dephosphorization mechanism, a dephosphorization brush roller mechanism and a second-level dephosphorization mechanism are set above and below the roller conveyor structure. The first-level dephosphorization mechanism can pre-spray and dephosphorize the surface and bottom of the steel billet, and the dephosphorization brush roller structure can wash the surface and bottom of the steel billet to wash off the oxide scale with strong adhesion. The second-level dephosphorization mechanism can post-clean the washed steel billet to thoroughly clean the oxide scale on the surface and bottom of the steel billet, solving the need for subsequent manual cleaning. The problem of phosphorus removal can be solved, and a better phosphorus removal effect can be achieved; secondly, the device optimizes the structure of the first-level phosphorus removal mechanism and the second-level phosphorus removal mechanism. When the steel billet is sprayed for phosphorus removal, the spray regulator can be used to control the number of high-pressure nozzles that need to spray water at the same time according to the width of the steel billet, so that the number of high-pressure nozzles spraying water is adapted to the width of the steel billet, thereby avoiding the waste of spray water. While effectively saving water resources, the spray regulator can realize the phosphorus removal needs of steel billets of different widths with one phosphorus removal pipe. It has the advantages of reasonable structure, good use effect and low cost, and is easy to promote and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0007] Figure 2 This is a schematic structural diagram of the first-level phosphorus removal mechanism in the present utility model;

[0008] Figure 3 This is a schematic structural diagram of the dephosphorization brush roller mechanism in the present invention;

[0009] In the figure: 1-guide roller conveying mechanism, 2-phosphorus removal box, 3-inlet, 4-outlet, 5-water inlet main pipe, 6-phosphorus removal pipe, 7-high-pressure nozzle, 8-connecting pipe, 9-cylinder, 10-adjusting plunger, 11-positioning plate, 12-movable rod, 13-drive motor, 14-brush roller, 15-bracket, 16-protective shell, 17-dual-axis motor, 18-transmission shaft, 19-transmission screw, 20-slide seat, 21-driving gear, 22-driven gear, 23-drain ditch, 24-water storage tank, 25-partition, 26-connecting pipe, 27-filter screen, 28-drain pipe, 29-circulation pipe, 30-blowing pipe, 31-intake hose, 32-jet nozzle, 33-air pump. DETAILED DESCRIPTION

[0010] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited in any way. Any changes or improvements made based on the teachings of the present invention shall fall within the scope of protection of the present invention.

[0011] like Figures 1 to 3 As shown, the utility model includes a guide roller conveyor mechanism 1 and a dephosphorization box 2 mounted on the outside of the guide roller conveyor mechanism 1. The guide roller conveyor mechanism 1 is a structure used in the prior art, and its function is to carry the steel billet to move in the dephosphorization box 2. The two ends of the dephosphorization box 2 are respectively provided with an inlet 3 and an outlet 4 for the operation of the guide roller conveyor mechanism 1. The top and bottom of the dephosphorization box 2 between the inlet 3 and the outlet 4 are respectively provided with a primary dephosphorization mechanism, a dephosphorization brush roller mechanism and a secondary dephosphorization mechanism. The primary dephosphorization mechanism and the secondary dephosphorization mechanism have the same structure and both include a water inlet main pipe 5 and a dephosphorization pipe 6. The dephosphorization pipe 6 is installed in the dephosphorization box 2. Spray regulators are installed at both ends of the dephosphorization pipe 6. A plurality of high-pressure nozzles 7 are installed at equal intervals on the dephosphorization pipe 6 near the side of the guide roller conveyor mechanism 1. The high-pressure nozzle 7 is a structure used in the prior art. The finished product can be directly purchased according to the pipe diameter and pressure used. The dephosphorization pipe 6 is connected to the water inlet main pipe 5 through a connecting pipe 8, and a connecting valve is installed on the connecting pipe 8.

[0012] The working process of this device is that the steel billet that needs to be dephosphorized is transported from the inlet 3 to the dephosphorization box 2 through the guide roller conveyor mechanism 1. After the steel billet enters the dephosphorization box 2, cold water is transported to the water inlet main pipe 5, and the cold water can enter the dephosphorization pipe 6 through the connecting pipe 8. The cold water entering the dephosphorization pipe 6 can be sprayed out through the high-pressure nozzle 7 to spray the surface of the steel billet for dephosphorization. In the dephosphorization box 2, the first-level dephosphorization mechanism can pre-spray the surface and bottom of the steel billet for dephosphorization, and then the dephosphorization brush roller structure can scrub the surface and bottom of the steel billet to scrub off the oxide scale with strong adhesion. Finally, the second-level dephosphorization mechanism can post-clean the scrubbed steel billet. The oxide scale on the surface and bottom of the steel billet is thoroughly cleaned, which solves the problem of subsequent manual cleaning and can achieve better dephosphorization effect. The steel billet after spraying and dephosphorizing by the secondary dephosphorization mechanism is output from the outlet 4 by the guide roller conveyor mechanism 1. In this device, when the primary dephosphorization mechanism and the secondary dephosphorization mechanism spray and dephosphorize the steel billet again, the spray regulator can be used to control the number of high-pressure nozzles 7 that need to spray water at the same time according to the width of the steel billet, so that the number of high-pressure nozzles 7 that spray water is adapted to the width of the steel billet, thereby avoiding waste of spray water. The arrangement of the spray regulator can effectively save water resources, and it can be achieved that one dephosphorization pipe 6 can meet the dephosphorization needs of steel billets of different widths.

[0013] Furthermore, in order to improve the effect of spray dephosphorization on steel billets, the number of dephosphorization pipes 6 of the first-level dephosphorization mechanism and the second-level dephosphorization mechanism can be arranged at intervals of 1 to 3. The number of dephosphorization pipes 6 can be reasonably arranged according to the needs of use.

[0014] Furthermore, the spray regulator includes a cylinder 9 and an adjusting plunger 10. The cylinder 9 is a structure used in the prior art. The finished product can be directly purchased according to the stroke and pressure used. A sealing plate is installed at the end of the dephosphorization pipe 6. The cylinder seat of the cylinder 9 is installed on the outer wall of the dephosphorization box 2. A positioning plate 11 is installed at the end of the piston rod of the cylinder 9. A movable rod 12 is installed on one side of the positioning plate 11, which passes through the sealing plate and extends into the dephosphorization pipe 6. The adjusting plunger 10 is slidably installed in the dephosphorization pipe 6, and one end of the adjusting plunger 10 is fixedly connected to the movable rod 12. The adjusting plunger 10 is in sliding contact with the inner wall of the dephosphorization pipe 6. The adjusting plunger 10 can adjust the length of the water filling inside the dephosphorization pipe 6. In the dephosphorization pipe 6, there are only two adjusting plungers 10 between the dephosphorization pipe 6. The inside can be filled with water, that is to say, only the water-filled area between the adjusting plungers 10 can spray water through the high-pressure nozzle 7. The distance between the two adjusting plungers is short, and the amount of water sprayed by the high-pressure nozzle is small, so that the steel billets with relatively small dephosphorization width can be sprayed. When the distance between the two adjusting plungers 10 increases, the amount of water sprayed by the high-pressure nozzle 7 is large, so that the steel billets with relatively large dephosphorization width can be sprayed, thereby meeting the needs of spraying dephosphorization of steel billets of different widths and avoiding waste of water resources. The movement of the adjusting plunger 10 can be driven by the cylinder 9 to move, so as to adjust the length between the two adjusting plungers 10. In the process of adjusting the adjusting plunger 10, in order to facilitate more precise adjustment, a displacement sensor can be installed on the dephosphorization pipe 6, so that the position of the adjusting plunger 10 can be accurately adjusted.

[0015] Furthermore, the dephosphorization brush roller mechanism includes a drive motor 13, a brush roller 14 and a bracket 15. The drive motor 13 is a structure used in the prior art. The finished product can be directly purchased according to the power used. A lifter is installed in the dephosphorization box 2, and the bracket 15 is installed on the lifter. The drive motor 13 is installed on one side of the bracket 15. The brush roller 14 is installed on the bracket 15 and is connected to the drive motor 13. When in use, the lifter can drive the bracket 15 to move up and down. By driving the brush roller 14 up and down by the lifter, the distance between the brush roller 14 and the billet can be adjusted to meet the requirements. In order to meet the dephosphorization requirements of steel billets of different thicknesses, after the distance between the brush roller 14 and the steel billet is adjusted, the driving motor 13 drives the brush roller 14 to rotate. During the rotation of the brush roller 14, the surface and bottom surface of the steel billet can be cleaned to improve the dephosphorization effect of the steel billet. Preferably, the lifter includes a protective shell 16, a dual-axis motor 17, a transmission shaft 18 and a transmission screw 19. The dual-axis motor 17 is a structure used in the prior art. The finished product can be directly purchased according to the needs of use. The protective shell 16 is installed in the dephosphorization box 2, the dual-axis motor 17 is installed in the protective shell 16, and the transmission shaft 18 symmetrical dual-axis motor 17 at both ends of the output shaft, the dephosphorization box 2 is symmetrically installed with a support seat on both sides, the transmission screw 19 is rotatably installed on the support seat, and the upper end of the transmission screw 19 extends into the casing, the transmission screw 19 and the transmission shaft 18 are connected by a gear rotation assembly, and a slide 20 is symmetrically installed on the transmission screw 19 below the protective shell 16. The bracket 15 is installed between the slides 20. When in use, the dual-axis motor 17 drives the transmission shaft 18 to rotate. During the rotation of the transmission shaft 18, the transmission screw 19 is driven to rotate by the gear transmission assembly. The transmission screw 19 is connected to the transmission shaft 18 by a gear rotation assembly. During the rotation of the rod 19, the slide 20 can be driven to move up and down on the transmission screw 19, thereby driving the bracket 15 to move up and down, thereby realizing the up and down lifting adjustment of the brush roller 14. The gear transmission assembly includes a driving gear 21 and a driven gear 22. The driving gear 21 is mounted on the transmission shaft 18, and the driven gear 22 is mounted on the transmission screw 19. The driving gear 21 and the driven gear 22 are engaged with each other, and the transmission shaft 18 drives the driving gear 21 to rotate. During the rotation of the driving gear 21, the driven gear 22 is driven to rotate, thereby driving the transmission screw 29 to rotate.

[0016] Furthermore, in order to avoid the waste of water resources, a drainage ditch 23 is provided on the ground below the dephosphorization box 1, and a water tank 24 is installed at the end of the drainage ditch 23. A partition 25 is installed inside the water tank 24, and a connecting hole 26 is provided between the top of the partition 25 and the top of the water tank 24. The partition 25 divides the inner cavity of the water tank 24 into a filter cavity and a clean water cavity. A filter screen 27 is provided in the filter cavity between the connecting hole 26 and the drainage ditch 23, and a sewage pipe 28 is provided at the bottom of the filter cavity below the drainage ditch 23. A drain valve is provided, and a circulation pipe 29 connected to the water inlet pipe 5 is provided in the clean water chamber. A circulation pump is installed on the circulation pipe 29. The cold water sprayed by the first-level dephosphorization mechanism and the second-level dephosphorization mechanism is collected through the drain ditch 23 and enters the filter chamber. After being filtered and intercepted by the filter mesh 27, the clean water enters the clean water chamber through the connecting pipe 8, and can enter the water inlet pipe 5 through the circulation pipe 29 for recycling. The oxide scale impurities intercepted in the filter chamber are cleared in the filter chamber. It is only necessary to regularly open the drain valve on the drain pipe 28 to discharge the sewage.

[0017] Furthermore, a drying mechanism is provided at the top and bottom of the dephosphorization box 2 near one end of the outlet 4, and the drying mechanism includes a blow pipe 30 and an air intake hose 31. The blow pipe 30 is installed inside the dephosphorization box 2, and both ends of the blow pipe 30 are sealed. A plurality of blow nozzles 32 are installed at equal intervals on the bottom of the blow pipe 30. An air pump 33 is provided on the outside of the dephosphorization box 2, and the air pump 33 is connected to the blow pipe 30 through the air intake hose 31. The blowing mechanism can dry the steel billet after water dephosphorization. When in use, the air pump 33 transports compressed air to the blow pipe 30 through the air intake hose 31, and the compressed air can be blown toward the surface and bottom of the steel billet through the blow nozzle 32 to blow away the moisture on the surface of the steel billet.

Claims

1. A high-pressure water dephosphorization device for hot-rolled steel billets, comprising a guide roller conveyor mechanism (1) and a dephosphorization box (2) mounted outside the guide roller conveyor mechanism (1), wherein: The dephosphorization box (2) is provided with an inlet (3) and an outlet (4) for the guide roller conveying mechanism (1) at both ends, and a first-level dephosphorization mechanism, a dephosphorization brush roller mechanism and a second-level dephosphorization mechanism are provided at the top and bottom of the dephosphorization box (2) between the inlet (3) and the outlet (4). The first-level dephosphorization mechanism and the second-level dephosphorization mechanism have the same structure and both include a water inlet pipe (5) and a dephosphorization pipe (6). The dephosphorization pipe (6) is installed in the dephosphorization box (2). Spray regulators are installed at both ends of the dephosphorization pipe (6). A plurality of high-pressure nozzles (7) are installed at equal intervals on the dephosphorization pipe (6) near the side of the guide roller conveying mechanism (1). The dephosphorization pipe (6) is connected to the water inlet pipe (5) through a connecting pipe (8), and a connecting valve is installed on the connecting pipe (8).

2. The high-pressure water dephosphorization device for hot-rolled steel billets according to claim 1, characterized in that: The number of the dephosphorization pipes (6) of the primary dephosphorization mechanism and the secondary dephosphorization mechanism can be arranged at intervals of 1 to 3.

3. The high-pressure water dephosphorization device for hot-rolled steel billets according to claim 1, characterized in that: The spray regulator comprises a cylinder (9) and an adjusting plunger (10); a sealing plate is installed at the end of the dephosphorization pipe (6); a cylinder seat of the cylinder (9) is installed on the outer wall of the dephosphorization box (2); a positioning plate (11) is installed at the end of the piston rod of the cylinder (9); a movable rod (12) passing through the sealing plate and extending into the dephosphorization pipe (6) is installed on one side of the positioning plate (11); the adjusting plunger (10) is slidably installed in the dephosphorization pipe (6), and one end of the adjusting plunger (10) is fixedly connected to the movable rod (12).

4. The high-pressure water dephosphorization device for hot-rolled steel billets according to claim 1, characterized in that: The dephosphorization brush roller mechanism comprises a drive motor (13), a brush roller (14) and a bracket (15); a lifter is installed in the dephosphorization box (2); the bracket (15) is installed on the lifter; the drive motor (13) is installed on one side of the bracket (15); the brush roller (14) is installed on the bracket (15) and is transmission-connected to the drive motor (13).

5. The high-pressure water dephosphorization device for hot-rolled steel billets according to claim 4, characterized in that: The lifter comprises a protective shell (16), a double-shaft motor (17), a transmission shaft (18) and a transmission screw (19); the protective shell (16) is installed in the dephosphorization box (2); the double-shaft motor (17) is installed in the protective shell (16); the transmission shaft (18) is symmetrically mounted on the output shafts at both ends of the double-shaft motor (17); support seats are symmetrically mounted on both sides of the dephosphorization box (2); the transmission screw (19) is rotatably mounted on the support seat, and the upper end of the transmission screw (19) extends into the housing; the transmission screw (19) and the transmission shaft (18) are connected to each other by a gear rotation assembly; slide seats (20) are symmetrically mounted on the transmission screw (19) below the protective shell (16); and the bracket (15) is mounted between the slide seats (20).

6. The high-pressure water dephosphorization device for hot-rolled steel billets according to claim 5, characterized in that: The gear transmission assembly comprises a driving gear (21) and a driven gear (22), wherein the driving gear (21) is mounted on a transmission shaft (18), and the driven gear (22) is mounted on a transmission screw (19), and the driving gear (21) and the driven gear (22) are meshed with each other.

7. The high-pressure water dephosphorization device for hot-rolled steel billets according to claim 1, characterized in that: A drainage ditch (23) is provided on the ground below the dephosphorization box (1), a water tank (24) is installed at the end of the drainage ditch (23), a partition (25) is installed inside the water tank (24), a communication hole (26) is provided between the top of the partition (25) and the top of the water tank (24), the partition (25) divides the inner cavity of the water tank (24) into a filter cavity and a clean water cavity, a filter screen (27) is provided in the filter cavity between the communication hole (26) and the drainage ditch (23), a sewage pipe (28) is provided at the bottom of the filter cavity below the drainage ditch (23), a sewage valve is provided on the sewage pipe (28), a circulation pipe (29) connected to the water inlet main pipe (5) is provided in the clean water cavity, and a circulation pump is installed on the circulation pipe (29).

8. The high-pressure water dephosphorization device for hot-rolled steel billets according to claim 1, characterized in that: A drying mechanism is provided at the top and bottom of the dephosphorization box (2) near one end of the outlet (4). The drying mechanism comprises a blowing pipe (30) and an air intake hose (31). The blowing pipe (30) is installed inside the dephosphorization box (2). Both ends of the blowing pipe (30) are sealed. A plurality of blowing nozzles (32) are installed at equal intervals at the bottom of the blowing pipe (30). An air pump (33) is provided outside the dephosphorization box (2). The air pump (33) is connected to the blowing pipe (30) through the air intake hose (31).

Images