Quick change mechanism for sizing nozzle of continuous casting tundish

Abstract

The utility model discloses a quick-change mechanism for a sizing nozzle of a continuous casting tundish, and belongs to the technical field of quick-change mechanisms for nozzles. The device comprises a foundation plate, an oil cylinder connecting plate is installed on the inlet side of a sizing nozzle of the foundation plate, an oil cylinder is installed on the plate face of the oil cylinder connecting plate, an oil cylinder push head is arranged at the output end of the oil cylinder, an area formed between the oil cylinder push head and a supporting guide plate is regarded as a nozzle loading area, and a new sizing nozzle is loaded in the nozzle loading area. According to the utility model, the nozzle loading section is arranged, so that the oil cylinder can be clamped and fixed in the oil cylinder connecting plate all the time in the quick change process of the sizing nozzle, and the oil cylinder does not need to be taken and placed repeatedly; the nozzle loading interval increases the distance between the front end of the oil cylinder and high-temperature molten steel in a high-temperature original sizing nozzle at a working position and a lower crystallizer, the effect of heat radiation on the oil cylinder is relieved, and the service life of the oil cylinder is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of nozzle quick-change mechanisms, and more specifically to a continuous casting tundish sizing nozzle quick-change mechanism. Background Art

[0002] At present, in my country's metallurgical continuous casting system, the tundish sizing nozzle quick-change technology has been widely used in the continuous casting of square billets, rectangular billets and special-shaped billets. It has the advantages of greatly increasing the number of single-bag continuous casting furnaces, improving the molten steel recovery rate and casting machine operation rate, and reducing the comparative cost per ton of steel.

[0003] At present, most of the structures of the quick-change mechanism for sizing nozzles of intermediate tanks are as shown in the attached Figure 5 As shown, an original base plate (4) is installed and fixed at the bottom of the original intermediate tank bottom plate (7), and an original water inlet (5) is fixed at the center thereof. Two original supporting guide plates (6) clamp the original calibrated water inlet (8) in the working position just below the original water inlet (5). When the original calibrated water inlet (8) needs to be replaced, the original oil cylinder (1) hung in the original clamping groove (201) of the original oil cylinder bracket (2) is operated, and the original oil cylinder push head (3) pushes the calibrated water inlet (8a) to be replaced in the preparation position into the working position, thereby completing the calibrated water inlet quick replacement operation.

[0004] At present, the operation steps of replacing the sizing nozzle of the intermediate tank sizing nozzle quick change mechanism are as follows:

[0005] S1, removing the crude oil cylinder (1) from the crude oil cylinder support (2);

[0006] S2, put the sizing nozzle (8a) to be replaced into the original inlet guide groove (601) formed by the two original support guide plates (6) through the gap between the original oil cylinder brackets (2), as shown in the attached Figure 6 As shown;

[0007] S3, placing the front end of the crude oil cylinder (1) into the original card slot (201) of the crude oil cylinder bracket (2);

[0008] S4, operating the crude oil cylinder (1) to use the sizing water inlet (8a) to be replaced to push out the original sizing water inlet (8), and the sizing water inlet (8a) to be replaced enters the working position.

[0009] It can be seen from the above operation steps that each time a sizing nozzle is replaced, the crude oil cylinder (1) needs to be removed from the crude oil cylinder bracket (2) and then hung again. The crude oil cylinder bracket (2) adopts an L-shaped hook type. The crude oil cylinder (1) needs to be taken and placed in combination with horizontal forward and backward movement and vertical up and down movement to insert or remove the front end of the crude oil cylinder (1) from the original slot (201). During the operation, it is easy to interfere with the original intermediate tank bottom plate (7) above. This operation mode has a high repetitive labor intensity and is inconvenient to operate. In addition, operating the oil cylinder hydraulic equipment in the narrow and high temperature space at the bottom of the intermediate tank in the continuous casting operation area is also dangerous. Utility Model Content

[0010] 1. Technical problems to be solved by the utility model

[0011] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a quick-change mechanism for the sizing nozzle of a continuous casting intermediate tank. The utility model sets a nozzle loading interval, and during the quick-change process of the sizing nozzle, the oil cylinder can be fixed in the oil cylinder connecting plate all the time, without the need to perform repeated pick-up and placement operations on the oil cylinder; at the same time, due to the existence of the nozzle loading interval, the distance between the front end of the oil cylinder and the high-temperature original sizing nozzle in the working position and the high-temperature molten steel in the crystallizer below it is increased, the effect of heat radiation on the oil cylinder is reduced, thereby reducing oil leakage caused by damage to the oil cylinder seal at high temperature, which is beneficial to increasing the service life of the oil cylinder.

[0012] 2. Technical solution

[0013] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is:

[0014] The utility model discloses a quick-change mechanism for a sizing nozzle of a continuous casting intermediate tank, comprising a base plate, an upper nozzle is fixed in the middle of the base plate, an original sizing nozzle is arranged at the bottom of the upper nozzle, a supporting guide plate is arranged on the outer side of the original sizing nozzle, the supporting guide plate comprises a left guide plate and a right guide plate, and the left guide plate and the right guide plate jointly clamp the original sizing nozzle just below the upper nozzle;

[0015] One side of the base plate is the inlet side of the sizing water inlet, and a cylinder connecting plate is installed on the inlet side of the sizing water inlet. A cylinder is installed on the plate surface of the cylinder connecting plate. A cylinder push head is provided at the output end of the cylinder. The area formed between the cylinder push head and the support guide plate is regarded as the water inlet loading interval. An opening is provided on the side of the water inlet loading interval, and a new sizing water inlet is loaded in the water inlet loading interval.

[0016] Furthermore, a U-shaped groove is provided on the plate surface of the oil cylinder connecting plate, and correspondingly, an annular groove is provided at the front end of the oil cylinder, and the oil cylinder is clamped in the U-shaped groove through the annular groove.

[0017] Furthermore, an entrance guide groove is formed between the left guide plate and the right guide plate.

[0018] Furthermore, the oil cylinder connecting plate is assembled with the sizing water inlet side of the base plate by means of bolts.

[0019] Furthermore, the oil cylinder can move horizontally left and right along the U-shaped groove.

[0020] 3. Beneficial effects

[0021] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0022] The utility model provides a nozzle loading interval, during the process of quick replacement of the sizing nozzle, the oil cylinder can be fixed in the oil cylinder connecting plate, and there is no need to repeatedly take and put the oil cylinder; at the same time, due to the existence of the nozzle loading interval, the distance between the front end of the oil cylinder and the high-temperature original sizing nozzle in the working position and the high-temperature molten steel in the crystallizer below is increased, the effect of heat radiation on the oil cylinder is reduced, thereby reducing the oil leakage caused by damage to the oil cylinder seal under high temperature, which is beneficial to improving the service life of the oil cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is the front view of the utility model;

[0024] Figure 2 It is a bottom view of the utility model;

[0025] Figure 3 It is a partial assembly diagram of the utility model;

[0026] Figure 4 This is a schematic diagram of the installation of the oil cylinder of the utility model;

[0027] Figure 5 It is a schematic diagram of the prior art structure of the utility model;

[0028] Figure 6 This is a state diagram of the prior art replacement of the utility model.

[0029] In the figure: 1. crude oil cylinder; 2. crude oil cylinder bracket; 201. original card slot; 3. crude oil cylinder push head; 4. original base plate; 5. original upper water inlet; 6. original support guide plate; 601. original inlet guide groove; 7. original intermediate tank bottom plate; 8. original sizing water inlet; 8a. sizing water inlet to be replaced; 11. oil cylinder; 12. oil cylinder connecting plate; 1201. U-shaped groove; 13. oil cylinder push head; 14. base plate; 15. upper water inlet; 16. support guide plate; 17. opening; 18. original sizing water inlet; 18a. new sizing water inlet; 19. water inlet loading area. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0031] Example 1

[0032] from Figure 1-4 It can be seen that a quick-change mechanism for the sizing nozzle of a continuous casting intermediate tank in this embodiment includes a base plate 14, an upper nozzle 15 is fixed in the middle of the base plate 14, an original sizing nozzle 18 is arranged at the bottom of the upper nozzle 15, and a supporting guide plate 16 is arranged on the outer side of the original sizing nozzle 18. The supporting guide plate 16 includes a left guide plate and a right guide plate. The left guide plate and the right guide plate jointly clamp the original sizing nozzle 18 directly below the upper nozzle 15, and an inlet guide groove 1601 is formed between the left guide plate and the right guide plate;

[0033] One side of the base plate 14 is the inlet side of the sizing water inlet, and a cylinder connecting plate 12 is installed on the inlet side of the sizing water inlet. A cylinder 11 is installed on the plate surface of the cylinder connecting plate 12. A cylinder push head 13 is provided at the output end of the cylinder 11. The area formed between the cylinder push head 13 and the guide plate 16 is regarded as the water inlet loading interval 19. An opening 17 is provided on the side of the water inlet loading interval 19, and a new sizing water inlet 18a is loaded in the water inlet loading interval 19.

[0034] The cylinder connecting plate 12 is assembled with the sizing water inlet side of the base plate 14 by bolts. A U-shaped groove 1201 is provided on the plate surface of the cylinder connecting plate 12. Correspondingly, an annular groove is provided at the front end of the cylinder 11. The cylinder 11 is clamped in the U-shaped groove 1201 through the annular groove. The cylinder 11 can move horizontally left and right along the U-shaped groove 1201.

[0035] The installation method of the oil cylinder of the utility model is as shown in the attached Figure 2-4 As shown in the figure: by horizontally moving the oil cylinder 11 left and right, the annular groove at the front end of the oil cylinder 11 is fixed in the U-shaped groove 1201 of the oil cylinder connecting plate 12 or is moved out of the U-shaped groove 1201. The oil cylinder 11 does not need to be moved vertically up and down when being taken and placed, and is not easy to interfere with the bottom plate of the intermediate tank, and the operation is simple;

[0036] At the same time, since it is no longer necessary to take and place the oil cylinder 11 when replacing the sizing nozzle during the continuous casting operation, the installation of the oil cylinder 11 does not need to be carried out in the high-temperature continuous casting operation area, but can be carried out in the intermediate tank car preparation area before the continuous casting operation, with a large operating space, low temperature, and safe and convenient operation.

[0037] The operation steps of the sizing nozzle quick change of this device are as follows:

[0038] (1) The new sizing nozzle 18a enters the nozzle loading section 19 from the opening 17, passes through the nozzle loading section 19, and is placed into the inlet guide groove 1601 formed by the left guide plate and the right guide plate, as shown in the attached figure. Figure 2 As shown;

[0039] (2) Operate the oil cylinder 11, the oil cylinder push head 13 pushes the new sizing nozzle 18a to push out the original sizing nozzle 18, and the new sizing nozzle 18a enters the working position.

[0040] The utility model provides a nozzle loading section 19, and during the sizing nozzle quick change process, the oil cylinder 11 can be fixed in the oil cylinder connecting plate 12, and there is no need to repeatedly take and put the oil cylinder 11;

[0041] At the same time, due to the existence of the water inlet loading interval 19, the distance between the front end of the oil cylinder 11 and the high-temperature original diameter water inlet 18 in the working position and the high-temperature molten steel in the crystallizer below is increased, which reduces the effect of heat radiation on the oil cylinder 11, thereby reducing oil leakage caused by damage to the oil cylinder seal under high temperature, which is beneficial to improving the service life of the oil cylinder 11.

[0042] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A quick-change mechanism for a sizing nozzle of a continuous casting intermediate tank, comprising a base plate (14), characterized in that: An upper water inlet (15) is fixed in the middle of the base plate (14), an original sizing water inlet (18) is arranged at the bottom of the upper water inlet (15), and a supporting guide plate (16) is arranged outside the original sizing water inlet (18), the supporting guide plate (16) comprises a left guide plate and a right guide plate, and the left guide plate and the right guide plate together clamp the original sizing water inlet (18) just below the upper water inlet (15); One side of the base plate (14) is the inlet side of the sizing nozzle, and a cylinder connecting plate (12) is installed on the inlet side of the sizing nozzle. A cylinder (11) is installed on the plate surface of the cylinder connecting plate (12). A cylinder push head (13) is arranged at the output end of the cylinder (11). The area formed between the cylinder push head (13) and the supporting guide plate (16) is regarded as a nozzle loading section (19). An opening (17) is arranged on the side of the nozzle loading section (19). A new sizing nozzle (18a) is loaded in the nozzle loading section (19); A U-shaped groove (1201) is provided on the plate surface of the oil cylinder connecting plate (12), and correspondingly, an annular groove is provided at the front end of the oil cylinder (11), and the oil cylinder (11) is clamped in the U-shaped groove (1201) through the annular groove.

2. The quick-change mechanism for sizing nozzle of continuous casting intermediate tank according to claim 1, characterized in that: An entrance guide groove (1601) is formed between the left guide plate and the right guide plate.

3. The quick-change mechanism for sizing nozzle of continuous casting tundish according to claim 1, characterized in that: The oil cylinder connecting plate (12) is assembled with the sizing water inlet side of the base plate (14) by means of bolts.

4. The quick-change mechanism for sizing nozzle of continuous casting tundish according to claim 1, characterized in that: The oil cylinder (11) can move horizontally left and right along the U-shaped groove (1201).

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