CN105057615A - Crystallizer mold flux adding device - Google Patents

Abstract

The invention discloses a device for adding mold slag to a crystallizer, which comprises: a frame, on which a mold slag silo is arranged, and at the discharge port of the mold slag silo, a device capable of quantitatively discharging the mold slag silo is arranged. The quantitative discharging device is also provided with a controller on the frame that can control the discharging frequency of the quantitative discharging device. The outlet of the quantitative discharging device is connected to the inlet of the flexible chute, and the outlet of the flexible chute is connected to the The mold powder enters the crystallizer from the outlet of the rigid chute, and the support frame supporting the rigid chute is provided with a vibrator. The above mold powder adding device has simple structure, convenient maintenance, low clogging rate, can quantitatively add mold powder to the mold, and can adjust the frequency of adding mold powder online.

Description

Mold powder adding device

technical field

The invention relates to the field of steelmaking and continuous casting equipment, in particular to a mold powder adding device.

Background technique

The continuous casting machine is a molding equipment that can continuously cast high-temperature molten steel into a billet with a certain cross-sectional shape and a certain size. The crystallizer in the continuous casting machine is used to gradually solidify the molten steel into the shell of the required specification and shape. Through the vibration of the mold, the shell can be continuously detached from the wall of the mold without being broken or broken. The submerged nozzle is a pouring refractory sleeve inserted below the molten steel surface of the mold, and the molten steel enters the mold through the submerged nozzle to solidify into a shell; in production, in order to improve the quality of continuous casting billets, the steel The liquid surface needs to be quantitatively covered with a layer of mold powder. Usually, the mold powder is added manually. The disadvantage of manual addition is that the amount and frequency of adding mold powder cannot be guaranteed.

Contents of the invention

The technical problem to be solved by the present invention is to provide a mold powder adding device with simple structure, convenient maintenance, low clogging rate, quantitative addition of mold powder, and online adjustment of mold powder addition frequency.

In order to solve the above-mentioned problems, the technical solution adopted in the present invention is: mold slag adding device, including: a frame, which is characterized in that: a mold slag silo is arranged on the frame, and at the outlet of the mold slag silo It is equipped with a quantitative discharging device capable of quantitatively discharging the mold slag silo, and a controller capable of controlling the discharging frequency of the quantitative discharging device is installed on the frame. The outlet of the quantitative discharging device and the flexible chute The inlet of the flexible chute is connected, the outlet of the flexible chute is connected with the inlet of the rigid chute, the mold powder enters the crystallizer from the outlet of the rigid chute, and a vibrator is installed on the support frame supporting the rigid chute.

Further, the aforementioned device for adding mold slag, wherein: the structure of the quantitative discharging device is: including a cylindrical discharging chamber placed by dumping, and an energy and protection device is provided on the side wall above the cylindrical discharging chamber. The feed hole connected to the discharge port of the slag silo is provided with a left discharge hole and a right discharge hole on the side wall below the cylindrical discharge chamber, and the feed hole is located between the left and right discharge holes , a transmission rod capable of reciprocating left and right along the axial direction of the cylindrical discharge chamber is also provided in the cylindrical discharge chamber, and a left baffle, a middle baffle, and a right baffle are arranged at intervals along the transmission rod. Material plate, the gap between the side walls of the three baffle plates and the side wall of the cylindrical discharge chamber is not greater than 10mm; with the reciprocating movement of the transmission rod, the left ring between the left and middle baffle The chamber can be separately connected with the left discharge hole or the feed hole, and the right annular chamber between the middle and right baffles can be connected with the right discharge hole or the feed hole separately, and the left ring The mutual positional relationship between the chamber, the right annular chamber, the feed hole, the left discharge hole, and the right discharge hole meets the following requirements: when the left circular chamber moves to the left and only conducts with the left discharge hole , the right annular chamber is only connected to the feed hole, and the position of the transmission rod is the left working position at this time; when the right annular chamber moves to the right and is only connected to the right discharge hole, the left annular chamber The chamber is only in communication with the feed hole, and the position of the transmission rod is the right working position; one end of the cylindrical discharge chamber is provided with a device that can drive the transmission rod to move back and forth between the left working position and the right working position. The drive mechanism; on the side wall below the cylindrical discharge chamber on the left side of the left discharge hole, there is a left slag discharge hole that can discharge the mold slag leaked from the left annular chamber out of the cylindrical discharge chamber. On the lower side wall of the cylindrical discharge chamber on the right side of the right discharge hole, there is a right slag discharge hole that can discharge the mold slag leaked from the right annular chamber out of the cylindrical discharge chamber; A collecting hopper is provided below the material chamber, which can collect the mold slag falling from the left and right slag discharge holes and the left and right discharge holes, and the outlet of the collecting hopper is connected with the inlet of the flexible slide pipe.

Further, the aforementioned device for adding mold slag to the mold, wherein: on the side wall of the cylindrical discharge chamber between the left slag discharge hole and the left discharge hole, there is a device that can prevent the transmission rod from crossing the left working position to the left but not to the left. The left limiting boss that prevents the mold slag leaking from the left annular chamber from falling from the left slag discharge hole is provided on the side wall of the cylindrical discharge chamber between the right slag discharge hole and the right discharge hole. The right limiting boss that can stop the drive rod from crossing the right working position to the right but does not stop the mold powder slag leaked in the right annular chamber from falling from the right slag discharge hole.

Further, in the aforementioned device for adding mold slag, wherein: the structure of the driving mechanism is: a cylinder arranged at one end of the cylindrical discharge chamber, the piston rod of the cylinder is fixed to one end of the transmission rod, and the two air ports of the cylinder They are respectively connected with ports A and B of the two-position five-way solenoid valve, port P of the two-position five-way solenoid valve is connected with the air source, and the electromagnetic control end of the two-position five-way solenoid valve is connected with the controller through a cable.

Furthermore, in the aforementioned device for adding mold slag, wherein: the side wall of the cylindrical discharge chamber on the upper part of the cylinder is provided with an installation port that can facilitate the installation of the cylinder into the cylindrical discharge chamber.

Further, in the aforementioned mold slag adding device, wherein: the piston rod of the cylinder is fixed to one end of the transmission rod through threads, and both ends of the transmission rod are respectively provided with threads that can match the threads on the piston rod of the cylinder.

Further, the aforementioned device for adding mold slag, wherein: the rigid slide pipe is a three-way pipe, one opening of the three-way pipe serves as the inlet of the rigid slide pipe and is connected to the outlet of the flexible slide pipe, and the other two openings of the three-way pipe The outlets as rigid slides are respectively located on both sides of the intrusive nozzle.

Further, in the aforementioned device for adding mold slag to the mold, a filter screen capable of preventing large particles of mold slag from entering the mold slag silo is provided at the feed port of the mold slag silo.

Furthermore, in the aforementioned mold powder adding device, wherein: the cylindrical discharge chamber is a cylindrical discharge chamber.

The advantages of the present invention are: the device for adding mold slag to the mold of the present invention has simple structure, convenient maintenance, low clogging rate, can quantitatively add mold slag to the mold, and can adjust the addition of mold slag on-line frequency.

Description of drawings

Fig. 1 is a schematic structural view of the device for adding mold flux to the mold according to the present invention.

FIG. 2 is a schematic diagram of an enlarged structure at point A in FIG. 1 .

Detailed ways

The present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings.

The mold powder adding device for the crystallizer, as shown in Figure 1 and Figure 2, includes: a frame 1, a mold powder silo 2 is arranged on the frame 1, and a mold slag bin 2 is provided at the outlet of the mold Mold slag silo 2 is a quantitative discharge device for quantitative discharge, and a controller 4 capable of controlling the discharge frequency of the quantitative discharge device is also provided on the frame 1. In this embodiment, the structure of the quantitative discharge device is : Including the cylindrical discharge chamber 5 placed by dumping, the side wall above the cylindrical discharge chamber 5 is provided with a feed hole 51 that can communicate with the discharge port of the mold slag silo 2, in the cylindrical The side wall below the discharge chamber 5 is provided with a left discharge hole 52 and a right discharge hole 53, and the feed hole 51 is located between the left and right discharge holes 52, 53, in the cylindrical discharge chamber 5 A transmission rod 6 capable of reciprocating left and right along the axial direction of the cylindrical discharge chamber 5 is also provided, and a left material blocking plate 61, a middle material blocking plate 62, and a right material blocking plate 63 are sequentially arranged at intervals along the transmission rod 6, The gaps between the side walls of the three baffle plates and the side walls of the cylindrical discharge chamber 5 are all no more than 10mm; The left annular chamber 64 can be connected with the left discharge hole 52 or the feed hole 51 separately respectively, and the right annular chamber 65 between the middle and right baffle plates 62,63 can be separately connected with the right discharge hole 53 or the feed hole 51 respectively. The feed holes 51 are connected, and the mutual positional relationship between the left annular chamber 64, the right annular chamber 65, the feed hole 51, the left discharge hole 52, and the right discharge hole 53 meets the following requirements: when the left annular chamber When the chamber 64 moved to the left and was only connected with the left discharge hole 52, the right annular chamber 65 was only connected with the feed hole 51, and now the position of the transmission rod 6 was the left working position; When the annular chamber 65 moves to the right and is only connected with the right discharge hole 53, the left annular chamber 64 is only connected with the feed hole 51, and now the position of the transmission rod 6 is the right working position; One end of the cylindrical discharge chamber 5 is provided with a driving mechanism capable of driving the transmission rod 6 to move back and forth between the left working position and the right working position. In this embodiment, the structure of the driving mechanism is: The cylinder 8 at one end of the material chamber 5, the piston rod of the cylinder 8 is fixed to one end of the transmission rod 6, and the two air ports of the cylinder 8 are respectively connected with the A and B ports of the two-position five-way solenoid valve 9, and the two-position five-way The P port of the solenoid valve 9 is connected to the air source, the electromagnetic control end of the two-position five-way solenoid valve 9 is connected to the controller 4 through a cable, and the position of the two-position five-way solenoid valve 9 is switched regularly through the controller 4, thereby changing The air intake direction and the exhaust direction of the cylinder 8, and then the piston rod of the cylinder 8 is stretched back and forth; The mold slag leaked in the middle is discharged from the left slag discharge hole 54 of the cylindrical discharge chamber 5, and a right annular chamber is provided on the side wall below the cylindrical discharge chamber 5 on the right side of the right discharge hole 53. The mold slag leaked in 65 is discharged from the right slag discharge hole 55 of the cylindrical discharge chamber 5. The left and right slag discharge holes 54 and 55 are set to prevent the leaked mold slag from accumulating and hindering the accurate arrival of the transmission rod 6. Left, Right working position; below the cylindrical discharge chamber 5, there is a collecting hopper 7 capable of collecting the mold slag falling from the left and right slag discharge holes 54, 55 and the left and right discharge holes 52, 53. The outlet of the hopper 7 is connected to the inlet of the flexible chute 3; the outlet of the flexible chute 3 is connected to the inlet of the rigid chute 31, and the crystallizer mold slag enters the crystallizer from the outlet of the rigid chute 31 to support the support of the rigid chute 31 A vibrator is arranged on the frame 311. In actual production, in order to make the billet shell continuously break away from the crystallizer, the crystallizer needs to vibrate. Therefore, the vibrator in this embodiment can be a movable cover plate of the crystallizer to move the crystallizer. The cover plate is connected with the rigid slide pipe 31, and the vibration of the movable cover plate of the crystallizer is used to vibrate the rigid slide pipe 31, so that the rigid slide pipe 31 is not easy to be blocked.

In this embodiment, on the side wall of the cylindrical discharge chamber 5 between the left slag discharge hole 54 and the left discharge hole 52, there is a device that can prevent the transmission rod 6 from crossing the left working position to the left but does not block the left annular cavity. The mold slag leaked in the chamber 64 falls from the left limiting boss 56 from the left slag discharge hole 54, on the side wall of the cylindrical discharge chamber 5 between the right slag discharge hole 55 and the right discharge hole 53 A right limiting boss 57 is provided which can prevent the transmission rod 6 from crossing the right working position to the right but does not prevent the mold slag leaking from the right annular chamber 65 from falling from the right slag discharge hole 55 . The left and right limiting bosses 56, 57 are set in order to make the transmission rod 6 stop accurately on the left and right working positions.

In this embodiment, an installation port 58 is provided on the side wall of the cylindrical discharge chamber 5 on the top of the cylinder 8 to facilitate the installation of the cylinder 8 into the cylindrical discharge chamber 5 . The rigid slide pipe 31 is a three-way pipe, and one opening of the three-way pipe is used as the inlet of the rigid slide pipe 31 to connect with the outlet of the flexible slide pipe 3, and the other two openings of the three-way pipe are used as the outlets of the rigid slide pipe 31 respectively in the intrusive type. On both sides of the nozzle, the outlet of the rigid slide pipe 31 is set in such a way that the mold powder can be evenly added to the crystallizer on both sides of the intrusive nozzle, so that the mold powder in the mold can be distributed more evenly . A filter screen 21 is installed at the feed port of the mold slag silo 2 to prevent the large-grain crystallizer mold slag from entering the mold slag silo 2. The purpose of setting the filter screen 21 is to prevent the large-grain crystallizer mold slag from clogging the quantitative discharge device , flexible slide pipe 3, rigid slide pipe 31. The cylindrical discharge chamber 5 is a cylindrical discharge chamber, and the cylindrical discharge chamber is conducive to the crystallizer mold slag being collected from the left and right discharge holes 52, 53 and the left and right slag discharge holes 54,55 and flow out. The piston rod of cylinder 8 is threadedly connected with one end of transmission rod 6, and the two ends of transmission rod 6 are respectively provided with threads that can be matched with the threads on cylinder 8 piston rods, and the two ends of transmission rod 6 are all provided with threads that can Make the installation of transmission rod 6 more convenient.

The discharge principle of the mold mold slag adding device described in this embodiment is as follows: as shown in Figure 1 and Figure 2, the controller 4 switches the position of the two-position five-way solenoid valve 9 to make the air intake direction of the cylinder 8 and the air outlet direction are changed, so that the piston rod of the cylinder 8 can move back and forth between the left working position and the right working position with the transmission rod 6. When the transmission rod 6 is in the left working position, the crystallizer in the mold slag bin Mold slag enters the right annular chamber 65 from the feed hole 51, and the mold slag in the left annular chamber 64 is discharged from the left discharge hole 52 and falls into the collecting hopper 7, and then passes through the flexible chute 3 and the rigid chute. The pipe 31 enters the crystallizer after being guided; when the transmission rod 6 is in the right working position, the mold slag in the mold slag silo 2 enters the left annular chamber 64 from the feeding hole 51, and the mold slag in the right annular chamber 65 Mold mold slag is discharged from the right discharge hole 53 and falls into the collecting hopper 7, then guided by the flexible chute 3 and the rigid chute 31 and enters the crystallizer.

The beneficial effects of the present invention are: the crystallizer mold slag adding device of the present invention has a simple structure and is easy to maintain; since the mold slag adding device is provided with a filter screen and a rigid slide pipe that can vibrate together with the vibrator , so that the clogging rate of the molding powder powder adding device is greatly reduced; The volume of the right annular chamber remains unchanged after the device is manufactured, thus realizing the purpose of quantitative discharge; the controller can adjust the discharge of the quantitative discharge device by controlling the station switching frequency of the two-position five-way solenoid valve frequency.

Claims (10)

1. Mold slag adding device, including: a frame, characterized in that: a mold slag silo is set on the frame, and a mold slag silo is provided at the outlet of the mold slag silo to quantitatively discharge the mold slag silo. The quantitative discharging device of the material is also equipped with a controller on the frame that can control the discharging frequency of the quantitative discharging device. The outlet of the quantitative discharging device is connected to the inlet of the flexible slide tube, and the outlet of the flexible slide The inlets of the chute are connected, the mold powder enters the crystallizer from the outlet of the rigid chute, and a vibrator is arranged on the supporting frame supporting the rigid chute. 2. The mold powder adding device according to claim 1, characterized in that: the structure of the quantitative discharging device is: including a cylindrical discharging chamber placed by dumping, and the side wall above the cylindrical discharging chamber There is a feed hole connected to the discharge port of the mold slag silo on the top, and a left discharge hole and a right discharge hole are provided on the side wall below the cylindrical discharge chamber. The feed holes are located on the left, Between the right discharge holes, a transmission rod capable of reciprocating left and right along the axial direction of the cylindrical discharge chamber is also arranged in the cylindrical discharge chamber, and a left baffle plate, a middle The baffle plate, the right baffle plate, the gaps between the side walls of the three baffle plates and the side wall of the cylindrical discharge chamber are all no more than 10mm; The left annular chamber between the plates can be separately connected with the left discharge hole or the feed hole, and the right circular chamber between the middle and right baffle plates can be connected with the right discharge hole or the feed hole respectively. conduction, and the mutual positional relationship between the left annular chamber, the right annular chamber, the feed hole, the left discharge hole and the right discharge hole meets the following requirements: When the feed hole is connected, the right annular chamber is only connected to the feed hole, and the position of the transmission rod is the left working position; when the right annular chamber moves to the right, it is only connected to the right discharge hole. When it is connected, the left annular chamber is only connected to the feed hole, and the position of the transmission rod is the right working position; one end of the cylindrical discharge chamber is provided with a device that can drive the transmission rod between the left working position and the right working position. The driving mechanism that moves back and forth between the working positions; on the side wall below the cylindrical discharge chamber on the left side of the left discharge hole, there is a cylindrical discharge chamber that can discharge the mold mold slag leaked from the left annular chamber The left slag discharge hole, on the side wall below the cylindrical discharge chamber on the right side of the right discharge hole, is provided with a right slag discharge that can discharge the mold powder leaked from the right annular chamber out of the cylindrical discharge chamber Holes; below the cylindrical discharge chamber, there is a collecting hopper which can collect the mold slag falling from the left and right slag discharge holes and the left and right discharge holes, and the outlet of the collecting hopper is connected with the inlet of the flexible chute . 3. The device for adding mold slag according to claim 2, characterized in that: on the side wall of the cylindrical discharge chamber between the left slag discharge hole and the left discharge hole, there is a device capable of preventing the drive rod from moving to the left. The left limiting boss that crosses the left working position but does not block the mold slag leaking from the left annular chamber falls from the left slag discharge hole, and the cylindrical discharge chamber between the right slag discharge hole and the right discharge hole The side wall of the chamber is provided with a right limit boss that can prevent the transmission rod from crossing the right working position to the right but does not prevent the mold slag leaked from the right annular chamber from falling from the right slag discharge hole. 4. The mold mold slag adding device according to claim 2 or 3, characterized in that the structure of the driving mechanism is: a cylinder arranged at one end of the cylindrical discharge chamber, the piston rod of the cylinder and one end of the transmission rod The phase is fixed, the two air ports of the cylinder are respectively connected with the A and B ports of the two-position five-way solenoid valve, the P port of the two-position five-way solenoid valve is connected with the air source, and the electromagnetic control end of the two-position five-way solenoid valve is connected through a cable. connected to the controller. 5. The mold powder adding device according to claim 4, characterized in that: the side wall of the cylindrical discharge chamber on the upper part of the cylinder is provided with an installation port that can facilitate the installation of the cylinder into the cylindrical discharge chamber . 6. The device for adding mold slag according to claim 4, characterized in that: the piston rod of the cylinder and one end of the transmission rod are fixed by threads, and the two ends of the transmission rod are respectively provided with Thread to match thread. 7. The device for adding mold slag according to claim 5, characterized in that: the piston rod of the cylinder and one end of the transmission rod are fixed by threads, and the two ends of the transmission rod are respectively provided with threads that can be connected with the piston rod. matching threads. 8. The mold powder adding device according to claim 1, 2 or 3, characterized in that: the rigid chute is a three-way pipe, and one opening of the three-way pipe is used as the inlet of the rigid chute and the outlet of the flexible chute The other two openings of the three-way pipe are located on both sides of the intrusive nozzle as the outlet of the rigid slide pipe. 9. The mold slag adding device according to claim 1, 2 or 3, characterized in that: a device capable of preventing large-grain mold slag from entering the mold slag silo is provided at the feed port of the mold slag silo. strainer. 10. The mold powder adding device according to claim 2 or 3, characterized in that: the cylindrical discharge chamber is a cylindrical discharge chamber.