阅读说明：本技术 一种连铸保护渣自动均匀加渣装置及其方法 (Automatic and uniform continuous casting mold flux slag adding device and method thereof ) 是由 陈志远 张鲲 皇祝平 翟强 李解 袁春 于 2019-11-11 设计创作，主要内容包括：本发明提供了一种连铸保护渣自动均匀加渣装置及其方法,包括加渣管系统,与加渣管系统的输送管道连通的渣料斗,设置在渣料斗内部的渣料搅拌机构,连通于渣料斗底部的下料管道,分别设置在下料管道一侧的进气管道上的电磁阀和设置在下料管道下段的气控夹紧阀,在下料管道的出料口处连接吹渣管,吹渣管上设有吹渣管头部喷嘴结构,吹渣管头部喷嘴结构内部还设有渣料喷出量控制结构；将保护渣渣料搅拌机构均匀搅拌依次通过渣料喷出量控制结构、吹渣管头部喷嘴结构对保护渣均匀喷射。本发明的有益效果为：本发明的保护渣通过搅拌机构均匀搅拌后,依次经过下料管道、接吹渣管,吹渣管头部喷嘴结构以及渣料喷出量控制结构后,保护渣均匀分散喷出。(The invention provides an automatic and uniform slag adding device and method for continuous casting mold flux, which comprises a slag adding pipe system, a slag hopper communicated with a conveying pipeline of the slag adding pipe system, a slag stirring mechanism arranged in the slag hopper, a blanking pipeline communicated with the bottom of the slag hopper, an electromagnetic valve arranged on an air inlet pipeline on one side of the blanking pipeline and a pneumatic control clamping valve arranged at the lower section of the blanking pipeline, wherein a slag blowing pipe is connected at a discharge port of the blanking pipeline, a nozzle structure at the head part of the slag blowing pipe is arranged on the slag blowing pipe, and a slag ejection quantity control structure is also arranged in the nozzle structure at the head part of the slag blowing pipe; the protecting slag stirring mechanism is uniformly stirred and is used for uniformly spraying the protecting slag through the slag spraying quantity control structure and the nozzle structure at the head of the slag blowing pipe. The invention has the beneficial effects that: after the casting powder is uniformly stirred by the stirring mechanism, the casting powder is uniformly dispersed and sprayed out after sequentially passing through the blanking pipeline, the slag receiving and blowing pipe, the nozzle structure at the head of the slag blowing pipe and the slag spraying quantity control structure.)

1. The automatic and uniform slag adding device for the continuous casting mold flux is characterized by comprising a slag adding pipe system (1), a slag hopper (2) communicated with a conveying pipeline of the slag adding pipe system (1), a slag stirring mechanism (3) arranged inside the slag hopper (2), a discharging pipeline (4) communicated with the bottom of the slag hopper (2), an electromagnetic valve (5) respectively arranged on an air inlet pipeline on one side of the discharging pipeline (4) and a pneumatic control clamping valve (6) arranged at the lower section of the discharging pipeline (4), a slag blowing pipe (7) is connected at a discharge port of the discharging pipeline (4), a slag blowing pipe head nozzle structure (8) is arranged on the slag blowing pipe (7), a slag blowing electromagnetic valve (8) for controlling the dredging or closing of the slag is arranged on the slag blowing pipe (7) at the front section of the slag blowing pipe head nozzle structure (8), a slag material ejection quantity control structure (10) is also arranged in the nozzle structure (8) at the head of the slag blowing pipe;

the slag-feeding device is characterized in that a slag-feeding electromagnetic valve is further arranged on the conveying pipeline, a pneumatic control clamping valve (6) at the lower section of the slag-feeding electromagnetic valve, an electromagnetic valve (5) on the air inlet pipeline and a blanking pipeline (4) is arranged on the slag-blowing electromagnetic valve (8) on the slag-blowing pipe (7), an electric control driving switch circuit of the stirring mechanism (3) and an electric control circuit of a guide plate (1021) of the slag ejection quantity control structure (10) are respectively connected with a controller to form a control loop.

2. The automatic and uniform slag adding device for the continuous casting mold flux according to claim 1, wherein the slag stirring mechanism (3) comprises a gear driving assembly (23) arranged inside the slag hopper (2), and a plurality of stirring structures (25) positioned on the periphery of a central driving gear (231) of the gear driving assembly (23).

3. The automatic and uniform continuous casting mold flux feeding device according to claim 1 or 2, wherein the gear driving assembly (23) comprises a driving motor (230) arranged on a support on the top surface of the slag hopper (2), a central driving gear (231) with a rotating shaft connected with an output shaft of the driving motor (230), a rotating element (232) sleeved on the rotating shaft of the central driving gear (231), at least three circumferential moving gears (233) arranged at equal intervals along a circumference concentric with the slag hopper (2), rotating shafts of the three circumferential moving gears (233) are connected to the rotating element (232) in an inserting manner, and each circumferential moving gear (233) is respectively meshed with a tooth groove in the circumferential direction of an inner circle on the top of the slag hopper (2) and the central driving gear (231).

4. The automatic uniform slag adding apparatus for the continuous casting mold flux according to any one of claims 1 to 3, wherein the stirring structure (25) comprises a stirring member (250) provided on a rotation shaft of each of the circumferential moving gears (233); the stirring component (250) comprises a triangular rotating block (2330) fixedly connected to a rotating shaft of the circumferential moving gear (233), L-shaped stirring pieces (2331) with one ends respectively inserted into through holes at three corners of the triangular rotating block (2330), the other ends of the three L-shaped stirring pieces (2331) are movably sleeved in insertion holes at each corner of a triangular rotating plate of the rotating piece (2332), and a stirring rod is fixedly connected to the gravity center of the outer side surface of the triangular rotating plate.

5. The automatic and uniform slag adding device for the continuous casting mold flux according to any one of claims 1 to 4, wherein the slag ejection quantity control structure (10) comprises a circular base (101) with a flow guide opening (1011) at the center, a hexagonal sliding chute (1012) arranged on one side surface of the circular base (101), an annular sleeve (1013) arranged on the other side surface of the circular base (101) and connected to the inner side wall of the heat preservation tank body (1), six guide members (102) matched with the hexagonal sliding chute (1012) and arranged circumferentially, and a limiting disc (103) positioned above the guide members (102);

tooth sockets (1014) are uniformly formed in the outer side surface of the circumference of the circular base (101);

the guide piece (102) is composed of a guide plate (1021), a guide column (10211) arranged on one side surface of one end of the guide plate (1021), and a sliding block (10212) arranged on the other side surface of one end of the guide plate (1021), wherein the sliding block (10212) is in sliding fit with the hexagonal sliding groove (1012).

6. The automatic and uniform slag adding device for the continuous casting mold flux according to any one of claims 1 to 5, wherein the limiting disc (103) comprises an inner ring (1030), an outer ring (1031) and six connecting rods (1032) which are arranged between the inner ring (1030) and the outer ring (1031) at equal intervals, guide grooves (10320) are formed in the connecting rods (1032), and the guide grooves (10320) are in mutual sliding fit with the guide posts (10211).

7. The method for adding the slag of the automatic and uniform continuous casting mold flux slag adding device according to any one of claims 1 to 6, wherein the nozzle structure (8) at the head of the slag blowing pipe is a corner solid conical nozzle and performs slag injection within 60 degrees.

8. A slag charging method according to any one of claims 1 to 6, characterized by comprising the following steps:

firstly, conveying the casting powder into a slag hopper (2) through a conveying pipeline of a slag adding pipe system (1), starting a driving motor (230) and a driving switch circuit to drive a central driving gear (231) of a slag stirring mechanism (3) to rotate so as to drive a circumferential moving gear (233) to rotate so as to drive a stirring component 250 to operate, and uniformly stirring the casting powder in the slag hopper (2);

secondly, a slag adding electromagnetic valve, an electromagnetic valve (5) on an air inlet pipeline, a pneumatic control clamping valve (6) at the lower section of a blanking pipeline (4) and an electric control circuit driving switch of a slag blowing electromagnetic valve (8) arranged on a slag blowing pipe (7) are powered on, after the slag adding electromagnetic valve is powered on, the pneumatic control clamping valve (6) opens the blanking pipeline (4), the casting powder freely falls into the slag blowing pipe (7) from a slag hopper (1) through the pneumatic control clamping valve (6), and the slag adding amount conveyed to a nozzle structure (8) at the head of the slag blowing pipe is controlled;

and step three, the blanking pipeline (4) is closed again after the power of the slag adding electromagnetic valve is cut off, the slag blowing electromagnetic valve (8) is electrified to start slag blowing, the compressed air enables the covering slag to pass through the blanking pipeline (4), a control switch of an electric control circuit of the starting guide plate (1021) is controlled by the controller to open a slag ejection quantity control structure (10) at the position of the nozzle structure (8) at the head of the slag blowing pipe, and the nozzle structure (8) at the head of the slag blowing pipe is uniformly blown into the copper pipe of the crystallizer to uniformly spray the covering slag.

Technical Field

The invention relates to the technical field, in particular to an automatic and uniform slag adding device and method for continuous casting mold flux.

Background

The slag adding of the protective slag of the continuous casting crystallizer is firstly added in a manual mode, but the manual slag adding is tedious and labor-intensive work, and the slag adding characteristics of hardworking, less adding and uniform adding are difficult to ensure. The follow-up use of the double-pipe automatic slag adding machine can automatically add slag, so that the 'frequently adding' effect is ensured. However, in the automatic slag adding process, the molten steel liquid level cannot be completely covered for slag adding, so that the covering slag is easily accumulated in the slag adding process, and the situation that the covering slag is excessively added at one side and is excessively reduced at the other side is caused. The automatic slag adding pipe is improved, so that the covering slag is added more uniformly, and the defects of carbon enrichment, inclusion and the like can be better solved.

How to solve the above technical problems is the subject of the present invention.

Disclosure of Invention

The invention aims to provide an automatic and uniform slag adding device and method for continuous casting mold flux.

The invention is realized by the following measures: a continuous casting mold flux automatic and uniform slag adding device comprises a slag adding pipe system, a slag hopper communicated with a conveying pipeline of the slag adding pipe system, a slag stirring mechanism arranged in the slag hopper, a blanking pipeline communicated with the bottom of the slag hopper, an electromagnetic valve arranged on an air inlet pipeline on one side of the blanking pipeline and a pneumatic control clamping valve arranged at the lower section of the blanking pipeline, wherein a slag blowing pipe is connected at a discharge port of the blanking pipeline, a slag blowing pipe head nozzle structure is arranged on the slag blowing pipe, a slag blowing electromagnetic valve for controlling the dredging or closing of slag is arranged on the slag blowing pipe at the front section of the slag blowing pipe head nozzle structure, and a slag ejection quantity control structure is also arranged in the slag blowing pipe head nozzle structure;

the slag blowing device is characterized in that a slag adding electromagnetic valve is further arranged on the conveying pipeline, the slag adding electromagnetic valve, an electromagnetic valve on the air inlet pipeline, a pneumatic control clamping valve at the lower section of the blanking pipeline, a slag blowing electromagnetic valve arranged on the slag blowing pipe, an electric control driving switch circuit of the stirring mechanism and an electric control circuit of a guide plate of the slag ejection quantity control structure are respectively connected with a controller to form a control loop.

According to a further optimized scheme of the automatic and uniform continuous casting mold flux slag adding device provided by the invention, the slag material stirring mechanism comprises a gear driving assembly arranged in the slag hopper and a plurality of stirring structures located on the periphery of a central driving gear of the gear driving assembly.

The invention provides a further optimized scheme of an automatic and uniform continuous casting covering slag adding device, wherein the gear driving assembly comprises a driving motor arranged on a support on the top surface of a slag hopper, a central driving gear with a rotating shaft connected with an output shaft of the driving motor, a rotating element sleeved on the rotating shaft of the central driving gear, at least three circumferential moving gears arranged at equal intervals along the circumference concentric with the slag hopper, rotating shafts of the three circumferential moving gears are inserted on the rotating element, and each circumferential moving gear is respectively meshed with a tooth socket in the circumferential direction of the inner circle at the top of the slag hopper and the central driving gear.

According to the further optimized scheme of the automatic and uniform continuous casting mold flux slag adding device, the stirring structure comprises stirring parts arranged on each circumferential moving gear rotating shaft; the stirring part comprises a triangular rotating block fixedly connected to the rotating shaft of the circumferential moving gear, one end of the triangular rotating block is respectively inserted into the L-shaped stirring piece in the through hole at the three corners of the triangular rotating block, the other end of the L-shaped stirring piece is movably sleeved in the insertion hole at each corner of the triangular rotating plate of the rotating piece, and the center of gravity of the outer side surface of the triangular rotating plate is fixedly connected with a stirring rod.

As a further optimization scheme of the automatic and uniform continuous casting covering slag adding device provided by the invention, the slag charge spraying quantity control structure comprises a circular base, a hexagonal chute, an annular sleeve, six guide pieces and a limiting disc, wherein the center of the circular base is provided with a flow guide port, the hexagonal chute is arranged on one side surface of the circular base, the annular sleeve is arranged on the other side surface of the circular base and is connected to the inner side wall of the heat-insulating tank body, the annular sleeve is matched with the hexagonal chute, and the six guide pieces are circumferentially arranged, and the limiting disc is positioned above the guide pieces;

tooth grooves are uniformly formed in the outer side surface of the circumference of the circular base;

the guide piece is composed of a guide plate, a guide column arranged on one side face of one end of the guide plate and a sliding block arranged on the other side face of one end of the guide plate, and the sliding block is in sliding fit with the hexagonal sliding groove.

According to a further optimized scheme of the automatic and uniform continuous casting mold flux slag adding device provided by the invention, the limiting disc comprises an inner circular ring, an outer circular ring and six connecting rods which are arranged between the inner circular ring and the outer circular ring at equal intervals, a guide groove is formed in each connecting rod, and the guide groove and the guide column are mutually matched in a sliding manner.

According to a further optimized scheme of the automatic and uniform continuous casting covering slag adding device provided by the invention, the nozzle structure at the head of the slag blowing pipe is a corner solid conical nozzle, and slag is sprayed within a 60-degree angle range.

In order to better achieve the aim of the invention, the invention also provides an automatic and uniform slag adding method of the continuous casting mold flux, which comprises the following steps:

firstly, conveying the covering slag into a slag hopper through a conveying pipeline of a slag adding pipe system, starting a driving motor and a driving switch circuit to drive a central driving gear of a slag stirring mechanism to rotate so as to drive a circumferential moving gear to rotate so as to drive a stirring component to operate, and uniformly stirring the covering slag in the slag hopper;

secondly, opening a slag adding electromagnetic valve, an electromagnetic valve on an air inlet pipeline, a pneumatic control clamping valve at the lower section of a blanking pipeline and an electric control circuit driving switch of the slag blowing electromagnetic valve arranged on the slag blowing pipe to be electrified, opening the blanking pipeline by the pneumatic control clamping valve after the slag adding electromagnetic valve is electrified, enabling the protective slag to freely fall from a slag hopper through the pneumatic control clamping valve to enter the slag blowing pipe, and controlling the slag adding amount conveyed to a nozzle structure at the head of the slag blowing pipe;

and step three, the blanking pipeline is closed again after the slag adding electromagnetic valve is powered off, the slag blowing electromagnetic valve is powered on to start slag blowing, the compressed air enables the casting powder to pass through the blanking pipeline, the controller controls a control switch of an electric control circuit of the starting guide plate to open a slag material ejection quantity control structure at the position of a nozzle structure at the head of the slag blowing pipe, and the nozzle structure at the head of the slag blowing pipe is uniformly blown into the copper pipe of the crystallizer to uniformly eject the casting powder.

The invention has the beneficial effects that: after the casting powder is uniformly stirred by the stirring mechanism, the casting powder sequentially passes through the blanking pipeline, the slag receiving and blowing pipe, the nozzle structure at the head of the slag blowing pipe and the slag ejection quantity control structure, and is uniformly dispersed and added into the copper pipe of the crystallizer, so that the casting powder can be completely covered on the liquid level of molten steel in the slag adding process, the thicknesses of slag layers at the periphery in the copper pipe can be basically the same, the condition of nonuniform addition of the casting powder is avoided, and the adding direction of the casting powder can be adjusted at any time by adjusting the angle of the nozzle structure at the head of the slag blowing pipe; the method can reduce the influence on the casting blank quality and accidents caused by uneven addition of the covering slag in the continuous casting production process, so that the added covering slag is uniformly filled into the air gap between the crystallizer and the blank shell, the lubricating and heat transfer effects of the crystallizer are improved, and the surface and internal quality of the casting blank is improved.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.

Fig. 2 is a first schematic structural diagram of a slag stirring mechanism in the embodiment of the invention.

Fig. 3 is a schematic structural diagram of a slag stirring mechanism in the embodiment of the invention.

Fig. 4 is a schematic structural diagram of a slag discharge control structure in an embodiment of the invention.

Fig. 5 is a schematic structural diagram of a circular base in an embodiment of the invention.

Fig. 6 is a schematic structural diagram of a circular base in an embodiment of the invention.

Fig. 7 is a schematic structural diagram of a limiting disc in an embodiment of the invention.

Fig. 8 is a schematic structural view of a guide member in an embodiment of the present invention.

Wherein the reference numerals are: 1. a slag adding pipe system; 2. a slag hopper; 23. a gear drive assembly; 230. a drive motor; 231. a center drive gear; 232. a rotating element; 233. a circumferentially moving gear; 2330. a triangular rotating block; 2331. an L-shaped stirring member; 2332. a rotating member; 25. a stirring structure; 250. a stirring member; 3. a slag stirring mechanism; 4. a blanking pipeline; 5. an electromagnetic valve; 6. a pneumatically controlled pinch valve; 7. a slag blowing pipe; 8. a nozzle structure at the head of the slag blowing pipe; 9. a slag blowing electromagnetic valve; 10. a slag ejection quantity control structure; 101. a circular base; 102. a guide member; 103. a limiting disc; 1011. a flow guide port; 1012. a hexagonal chute; 1013. an annular sleeve; 1014. a tooth socket; 1021. a guide plate; 10211. a guide post; 10212. a slider; 103. a limiting disc; 1030. an inner circular ring; 1031. an outer ring; 1032. a connecting rod; 10320. a guide groove.

Detailed Description

In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.

Referring to fig. 1 to 8, the present invention is: a continuous casting mold flux automatic and uniform slag adding device comprises a slag adding pipe system 1, a slag hopper 2 communicated with a conveying pipeline of the slag adding pipe system 1, a slag stirring mechanism 3 arranged inside the slag hopper 2, a blanking pipeline 4 communicated with the bottom of the slag hopper 2, an electromagnetic valve 5 arranged on an air inlet pipeline on one side of the blanking pipeline 4 and a pneumatic control clamping valve 6 arranged on the lower section of the blanking pipeline 4, a slag blowing pipe 7 connected with a discharge port of the blanking pipeline 4, a slag blowing pipe head nozzle structure 8 arranged on the slag blowing pipe 7, a slag blowing electromagnetic valve 9 for controlling the dredging or closing of slag on the slag blowing pipe 7 at the front section of the slag blowing pipe head nozzle structure 8, and a slag spraying amount control structure 10 arranged inside the slag blowing pipe head nozzle structure 8;

the conveying pipeline is also provided with a slag adding electromagnetic valve, an electromagnetic valve 5 on the air inlet pipeline, a pneumatic control clamping valve 6 at the lower section of the blanking pipeline 4, a slag blowing electromagnetic valve 8 arranged on a slag blowing pipe 7, an electric control driving switch circuit of the stirring mechanism 3 and an electric control circuit of a guide plate 1021 of a slag ejection quantity control structure 10 which are respectively connected with a controller to form a control loop.

Specifically, the slag stirring mechanism 3 includes a gear driving assembly 23 disposed inside the slag hopper 2, and a plurality of stirring structures 25 located in the circumferential direction of a central driving gear 231 of the gear driving assembly 23.

Specifically, the gear driving assembly 23 includes a driving motor 230 disposed on the bracket on the top surface of the slag hopper 2, a central driving gear 231 whose rotation shaft is connected with the output shaft of the driving motor 230, a rotating element 232 sleeved on the rotation shaft of the central driving gear 231, at least three circumferential moving gears 233 disposed at equal intervals along the circumference concentric with the slag hopper 2, the rotation shafts of the three circumferential moving gears 233 are inserted into the rotating element 232, and each circumferential moving gear 233 is respectively engaged with the circumferential tooth space on the inner circle of the top of the slag hopper 2 and the central driving gear 231.

Specifically, the stirring structure 25 includes a stirring member 250 provided on the rotation shaft of each of the circumferential moving gears 233; the stirring component 250 comprises a triangular rotating block 2330 fixedly connected to the rotating shaft of the circumferential moving gear 233, L-shaped stirring pieces 2331 with one end respectively inserted into through holes at three corners of the triangular rotating block 2330, the other ends of the three L-shaped stirring pieces 2331 are movably sleeved in insertion holes at each corner of a triangular rotating plate of the rotating piece 2332, and a stirring rod is fixedly connected to the gravity center of the outer side surface of the triangular rotating plate.

Specifically, the slag charge ejection volume control structure 10 comprises a circular base 101 with a flow guide port 1011 at the center, a hexagonal chute 1012 arranged on one side of the circular base 101, an annular sleeve 1013 arranged on the other side of the circular base 101 and connected to the inner side wall of the heat preservation tank 1, six guide members 102 matched with the hexagonal chute 1012 and arranged circumferentially, and a limiting disc 103 positioned above the guide members 102;

tooth sockets 1014 are uniformly arranged on the outer side surface of the circumference of the circular base 101;

the guide member 102 is composed of a guide plate 1021, a guide post 10211 disposed at one side surface of the guide plate 1021, and a slider 10212 disposed at the other side surface of one end of the guide plate 1021, wherein the slider 10212 is slidably engaged with the hexagonal sliding groove 1012.

Specifically, the limiting disk 103 comprises an inner ring 1030, an outer ring 1031 and six connecting rods 1032 which are arranged between the inner ring 1030 and the outer ring 1031 at equal intervals, wherein guide grooves 10320 are formed in the connecting rods 1032, and the guide grooves 10320 are in sliding fit with the guide posts 10211.

Specifically, the nozzle structure 8 at the head of the slag blowing pipe is a solid conical nozzle with a corner, and slag is sprayed within 60-degree angle range.

In order to better achieve the aim of the invention, the invention also provides an automatic and uniform slag adding method of the continuous casting mold flux, which comprises the following steps:

firstly, conveying the casting powder into a slag hopper 2 through a conveying pipeline of a slag adding pipe system 1, starting a driving motor 230 and a driving switch circuit to drive a central driving gear 231 of a slag stirring mechanism 3 to rotate so as to drive a circumferential moving gear 233 to rotate so as to drive a stirring component 250 to operate, and uniformly stirring the casting powder in the slag hopper 2;

secondly, an electric control circuit driving switch of a slag adding electromagnetic valve, an electromagnetic valve 5 on an air inlet pipeline, a pneumatic control clamping valve 6 at the lower section of a blanking pipeline 4 and a slag blowing electromagnetic valve 8 arranged on a slag blowing pipe 7 is powered on, after the slag adding electromagnetic valve is powered on, the pneumatic control clamping valve 6 opens the blanking pipeline 4, protective slag freely falls from a slag hopper 1 through the pneumatic control clamping valve 6 to enter the slag blowing pipe 7, and the slag adding amount conveyed to a nozzle structure 8 at the head of the slag blowing pipe is controlled;

and step three, the blanking pipeline 4 is closed again after the power of the slag adding electromagnetic valve is cut off, the slag blowing electromagnetic valve 8 is electrified to start slag blowing, the compressed air enables the protective slag to pass through the blanking pipeline 4, the controller controls a control switch of an electric control circuit of the starting guide plate 1021 to open the slag ejection quantity control structure 10 at the nozzle structure 8 at the head of the slag blowing pipe, and the nozzle structure 8 at the head of the slag blowing pipe is uniformly blown into the copper pipe of the crystallizer to uniformly spray the protective slag.

The technical features of the present invention which are not described in the above embodiments may be implemented by or using the prior art, and are not described herein again, of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and variations, modifications, additions or substitutions which may be made by those skilled in the art within the spirit and scope of the present invention should also fall within the protection scope of the present invention.