CN210098960U

CN210098960U - Tundish nozzle device easy to replace

Info

Publication number: CN210098960U
Application number: CN201920199746.8U
Authority: CN
Inventors: 毛利民; 王俊涛; 袁林; 魏瀚; 徐如林; 胡建辉; 闫昕; 徐琳琳; 周严敦; 孙旭东
Original assignee: RUITAI TECHNOLOGY Co Ltd
Current assignee: RUITAI TECHNOLOGY Co Ltd
Priority date: 2019-02-15
Filing date: 2019-02-15
Publication date: 2020-02-21
Anticipated expiration: 2029-02-15

Abstract

The utility model relates to a tundish nozzle device that steel continuous casting used and was easily changed, including guide way 1, the work mouth of a river 7, the spare mouth of a river 8, pneumatic cylinder 9, guide way 1 is connected to the lower part of tundish base 4, the upper nozzle 5 and brick cup 6 through the pin 2 that contains the pin hole 3, the head of the work mouth of a river 7 and the spare mouth of a river 8 that are in operating condition is all fixed a position and is placed in the guide way, characterized by that the installation sets up gyro wheel 13 in the guide way 1, gyro wheel 13 contacts with the head of the work mouth of a river 7 and the spare mouth of a river 8, guide way 1 holds the work mouth of a river 7 and the spare mouth of a river 8 through the support of the gyro wheel group, the upper nozzle 5 coincides with the through-hole axis of the work mouth; compared with the prior art, the utility model discloses a mouth of a river moving resistance is little, and guiding mechanism metal surface wearing and tearing are low, when adjusting the laminating pretightning force at the working mouth of a river, need not to dismantle a whole system, improve middle package life-span, make continuous casting time extension.

Description

Tundish nozzle device easy to replace

Technical Field

The utility model relates to a device is changed at ladle mouth of a river in middle of steel continuous casting for change the mouth of a river of middle package.

Background

The outlet of the molten steel of the tundish of the steel continuous casting machine is provided with a water gap, and the water gap needs to be replaced after being used for a certain time. The existing device is provided with a water gap running slideway, a working water gap and a standby water gap which are in working states are positioned and placed in the slideway, and the lower surface of the upper water gap is tightly extruded under the action of a gas spring pressing block. When the nozzle needs to be replaced, the spare nozzle is pushed to the working position from the spare position by a hydraulic cylinder in a clamping groove at the front end of the device, and replacement is completed. And (4) retracting the hydraulic cylinder rod, removing the hydraulic cylinder, and then installing a new sliding water gap in the slide way of the water gap device for standby of next water gap replacement. However, the nozzle replacing device with the above structure has the disadvantages of large resistance and difficult movement in a high temperature state, and the contact surface of the slide way is strongly abraded due to large friction force, so that when the adjusting spring is replaced, the whole nozzle replacing device needs to be disassembled, a large amount of time and money are consumed, and the service life of the tundish is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a tundish mouth of a river device of easily changing, through install the gyro wheel in mouth of a river operation guide way, the friction with the work mouth of a river motion is replaced by sliding friction part for rolling friction, can show to reduce the resistance when removing the work mouth of a river or trouble mouth of a river, moreover, wearing and tearing between the reduction board are favorable to improving the work mouth of a river and the tundish and go up the mouth of a river closely the laminating degree simultaneously, easily change the mouth of a river to shorten its change time.

The utility model discloses a structure includes guide way 1, the working nozzle 7, the spare port 8, pneumatic cylinder 9, guide way 1 is connected to middle package base 4 through the pin 2 that contains cotter hole 3, the lower part of upper nozzle 5 and brick cup 6, the head of working nozzle 7 and spare port 8 that is in operating condition is all fixed a position and is placed in the guide way, characterized by installs in guide way 1 and sets up gyro wheel 13, gyro wheel 13 contacts with the head of working nozzle 7 and spare port 8, supporting role guide way 1 through the roller train holds working nozzle 7 and spare port 8, the upper nozzle 5 coincides with the through-hole axis of working nozzle 7.

Compared with the prior art, the utility model discloses when adjusting the laminating pretightning force of the working connection of a river, need not to dismantle a whole set of working connection of a river system, improved the mouth of a river and changed device life and efficiency, help prolonging tundish life expectancy, make the continuous casting time extension.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a sectional view taken along line a-a of fig. 1.

Fig. 3 is a sectional view taken along line B-B of fig. 1.

Fig. 4 is an enlarged view of the roller support structure of the present invention.

In the figure, a guide groove 1, a pin 2, a pin hole 3, a tundish base 4, a water feeding port 5, a brick cup 6, a working water port 7, a standby water port 8, a hydraulic cylinder 9, a connecting rod 10, a connecting rod shaft 11, a cantilever pin 12, a roller 13, a guide rod 14, an inclined through hole 15, a compression spring 16, a clamp 17 and a bolt 18.

Detailed Description

Now combine the figure to illustrate the embodiment of the utility model, the utility model discloses a tundish nozzle is easily traded device, including guide way 1, the working nozzle 7, spare water mouth 8, pneumatic cylinder 9, guide way 1 is connected to tundish base 4 through the pin 2 that contains the dowel hole 3, the lower part of upper nozzle 5 and brick cup 6, the head of working nozzle 7 and spare water mouth 8 that is in operating condition is all fixed a position and is placed in the guide way, characterized by installs in guide way 1 and sets up gyro wheel 13, make gyro wheel 13 and working nozzle 7 and spare water mouth 8's head contact, guide way 1 holds working nozzle 7 and spare water mouth 8 through the supporting role of roller train, upper nozzle 5 coincides with the through-hole axis of working nozzle 7, constitute the molten steel passageway.

The working water gap 7 is adjacent to the head of the standby water gap 8 and can move along the guide groove through a hydraulic cylinder 9.

The roller 13 has a circular arc-shaped outer edge, is connected with the connecting rod 10 through a cantilever pin 12, and is fixed in the guide groove 1 through a connecting rod shaft 11. The circular arc-shaped outer edge design can ensure that the outer edge of the roller 13 is still in spherical contact with the heads of the working water port 7 and the spare water port 8 even if the roller deflects, so that the rolling friction coefficient of the device is remarkably reduced, and finally, the resistance of hydraulic drive is reduced.

The connecting rod 10 is contacted with a guide rod 14 embedded with a spring 16 to realize linkage coupling with the guide rod 14, the guide rod 14 supports the working water gap 7 and the standby water gap 8 by a supporting roller 13 through the pretightening force of the spring 16, and the working water gap 7 is tightly attached to the water feeding gap 5.

The spring 16, which is inserted into the guide bar 14, is held in place by a clamp 17 and is screwed into the inclined through hole 15 by a bolt 18. The head of each bolt 18 protrudes from the outer surface of the guide groove 1, and the head of each bolt is rotated to adjust the pre-tension of the spring 16. When the height of the spring 16 cannot be changed to a predetermined pre-tightening force, the bolt 18 is unscrewed from the inclined through hole 15, and a new spring can be replaced, so that the whole set of the working nozzle system does not need to be disassembled.

The tundish nozzle device is convenient to implement, and the sliding friction part of the nozzle is replaced by rolling friction by adopting the system design of the guide groove and the roller support, so that the moving resistance of the nozzle is reduced by 20-25%, the wear rate of the metal surface of the nozzle guide mechanism is obviously reduced, and the service life of the device in the steel continuous casting is prolonged.

The tundish nozzle device is convenient to operate, the replacement operation of the working nozzle is basically the same as the original operation, but the load of the hydraulic driving device is reduced by 20-25%, the time for pushing the standby nozzle 8 to the working position from the standby position can be shortened to be not more than 0.5s from 1s, the low metal abrasion is ensured, the device is well sealed, the air suction is avoided, the phenomenon that the gap between the nozzle and the working nozzle clamps steel is effectively prevented, the single-ladle continuous casting time is greatly improved, the molten steel allowance in the tundish and the head and tail cutting amount of the continuous casting billet are relatively reduced, the continuous casting molten steel yield and the continuous casting billet quality are improved, the raw material consumption is reduced, and the cost is reduced.

Claims

1. The utility model provides an easy tundish mouth of a river device of changing, including guide way (1), the work mouth of a river (7), reserve water mouth (8), pneumatic cylinder (9), guide way (1) is connected to tundish base (4) through pin (2) that contain cotter hole (3), the lower part of last mouth of a river (5) and brick cup (6), the head of the work mouth of a river (7) and reserve water mouth (8) that are in operating condition is all fixed a position and is placed in the guide way, characterized by installs in guide way (1) and sets up gyro wheel (13), gyro wheel (13) and the head contact of work mouth of a river (7) and reserve water mouth (8), guide way (1) hold in the palm work mouth of a river (7) and reserve water mouth (8) through the supporting role of gyro wheel group, the coincidence of the through-hole axis of last mouth of a river (5) and work mouth of a river (7), constitute the molten steel.

2. An easily replaceable tundish nozzle arrangement as claimed in claim 1, characterised in that the working nozzle (7) is adjacent the head of the spare nozzle (8) and is movable along the guide channel by a hydraulic cylinder (9).

3. An easily replaceable tundish nozzle assembly according to claim 1 or claim 2, wherein the roller (13) has a circular outer edge and is connected to the connecting rod (10) by a cantilever pin (12) and is fixed in the guide channel (1) by a connecting rod shaft (11).

4. The tundish nozzle device easy to replace according to claim 3, wherein the connecting rod (10) is in contact with a guide rod (14) embedded in a spring (16), the guide rod (14) supports the working nozzle (7) and the standby nozzle (8) through the pretightening force of the spring (16), and the supporting roller (13) enables the working nozzle (7) and the upper nozzle (5) to be tightly attached.

5. An easily replaceable tundish nozzle assembly according to claim 4, wherein the spring (16) is mounted in the inclined through hole (15) by means of a clamp (17) and a bolt (18), and the bolt (18) is screwed to maintain the spring (16) under a preload, the head of the bolt (18) protruding from the outer surface of the guide groove (1).