Intermediate billet descaling device with self-protection function

Abstract

The utility model discloses an intermediate billet descaling device with a self-protection function, which comprises a roller conveyor used for conveying an intermediate billet body, an upper descaling header is mounted at the top of the roller conveyor, a lower descaling header is mounted at the bottom of the roller conveyor, an upper descaling nozzle is communicated with the outer wall of the upper descaling header, and a lower descaling nozzle is communicated with the outer wall of the lower descaling header. And the outer wall of the lower descaling collecting pipe is communicated with a lower descaling nozzle. The upper dephosphorization nozzle and the lower dephosphorization nozzle are used for washing the surfaces of the two sides of the intermediate billet body in a 15-degree inclined mode, iron oxide on the surfaces of the intermediate billet body is thoroughly removed, the upper dephosphorization nozzle and the lower dephosphorization nozzle are installed in a hidden mode, the self-protection effect is achieved, the anti-collision baffle is installed on the outer side of the upper dephosphorization nozzle, and a supporting rib plate reinforcing structure is additionally arranged. The anti-collision baffle can move in cooperation with the torsional spring, elastic buffering is achieved, the service life of the device is prolonged, the problem that steel is poured in finish rolling or a middle billet is warped and collides with the descaling nozzle obliquely is solved, and deformation of the hot rolling descaling header can be further prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of metal surface treatment, in particular to a descaling device for intermediate billets with a self-protection function. Background Art

[0002] In the process of hot continuous rolling production, before the intermediate billet enters the finishing mill for rolling, it must pass through a descaling device to remove the iron oxide on the surface to prevent the iron oxide from being pressed in and affecting the surface quality, otherwise it will affect the use of downstream customers.

[0003] The descaling device mainly includes inlet / outlet pinch rolls and drive devices, inlet / outlet descaling headers, cover plates, transition rolls, etc. The descaling nozzles are distributed on the descaling headers. After the intermediate billet enters the descaling box, the descaling is started, and the upper pinch roll is pressed down to clamp the intermediate billet to remove the iron oxide on the surface of the intermediate billet.

[0004] When it is necessary to pour the intermediate billet out of the descaling box due to a stack of steel in the finishing mill, or when the head of the intermediate billet is tilted up, the intermediate billet is likely to hit and knock down the descaling nozzles, causing damage to the descaling nozzles. It is also possible that abnormal descaling nozzles result in incomplete removal of iron oxide, which is pressed into the surface of the strip steel.

[0005] To prevent the problem of the descaling nozzles being knocked crooked, the utility model develops a descaling device for intermediate billets with a self-protection function. Summary of the Utility Model

[0006] The technical problem to be solved by the utility model is to provide a descaling device for intermediate billets with a self-protection function in view of the above-mentioned deficiencies of the prior art, and solve the problem that the descaling nozzles are knocked crooked due to pouring steel in the finishing mill or the head of the intermediate billet tilting up.

[0007] To solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A descaling device for intermediate billets with a self-protection function includes a roller conveyor for transporting the intermediate billet body. An upper descaling header is installed on the top of the roller conveyor, and a lower descaling header is installed on the bottom of the roller conveyor. Upper descaling nozzles are communicated and arranged on the outer wall of the upper descaling header, and lower descaling nozzles are communicated and arranged on the outer wall of the lower descaling header, and both the upper descaling nozzles and the lower descaling nozzles are inclined;

[0009] A connecting plate is movably sleeved outside the upper descaling header. The bottom end of the connecting plate is fixedly connected with a collision-proof baffle, and through holes corresponding to the upper descaling nozzles are penetrated through the outer wall of the collision-proof baffle. A torsion spring is sleeved outside the upper descaling header, and the two free ends of the torsion spring are respectively and limit-fixed with the connecting plate and the upper descaling header.

[0010] Preferably, the collision-proof baffle is arranged as an arc-shaped plate, and a support rib plate is fixedly connected to the inner arc surface of the arc-shaped plate, and the top end of the support rib plate is attached to and slidably matched with the outer wall of the upper descaling header.

[0011] Preferably, the number of the upper dephosphorization nozzles is set to be plural, and the plural upper dephosphorization nozzles are distributed in a linear array;

[0012] The number of the lower dephosphorization nozzles is set to be plural, and the plural lower dephosphorization nozzles are distributed in a linear array.

[0013] Preferably, the number of the through holes is set to be plural, and the plural through holes are distributed in one-to-one correspondence with the plural upper dephosphorization nozzles. The bottom end of the upper dephosphorization nozzle extends into the through hole and is located at the middle part of the wall thickness of the arc-shaped plate;

[0014] The inner diameter of the through hole is larger than the outer diameter of the end of the upper dephosphorization nozzle.

[0015] Preferably, the roller conveyor includes an upper pinch roll and a lower pinch roll. A conveying channel is formed between the upper pinch roll and the lower pinch roll, and the intermediate billet body is fed at the conveying channel;

[0016] The numbers of the upper pinch roll and the lower pinch roll are both set to be plural, and the upper pinch roll and the lower pinch roll are both rotatably connected to the two side frames of the roller conveyor and are driven by a driving mechanism.

[0017] Preferably, the combined mechanism of the upper descaling header and the upper dephosphorization nozzle is located between two adjacent upper pinch rolls, and the horizontal height of the bottom end of the anti-collision baffle is higher than the horizontal height of the bottom end of the upper pinch roll;

[0018] The combined mechanism of the lower descaling header and the lower dephosphorization nozzle is located between two adjacent lower pinch rolls, and the horizontal height of the top end of the lower dephosphorization nozzle is lower than the horizontal height of the top end of the lower pinch roll.

[0019] Preferably, pipe seats are installed on the outer sides of the upper descaling header and the lower descaling header, and the pipe seats are installed on the two side frames of the roller conveyor through screws and nuts.

[0020] Preferably, the ends of the upper descaling header and the lower descaling header are connected to a water pump through flanges. After water is pumped into the upper descaling header or the lower descaling header by the water pump, it is pressurized and sprayed out.

[0021] Preferably, the upper descaling header and the lower dephosphorization nozzle are distributed in parallel, and the central axes of the upper descaling header and the lower dephosphorization nozzle are staggeredly distributed in the direction of the intermediate billet body.

[0022] Preferably, the inclination angles of the upper dephosphorization nozzle and the lower dephosphorization nozzle with respect to the vertical line are both set to be 15°.

[0023] The utility model has the following beneficial effects:

[0024] The two sides of the surface of the intermediate billet body are flushed at an angle of 15° through the upper descaling nozzle and the lower descaling nozzle to thoroughly remove the iron oxide on the surface of the intermediate billet body. The upper descaling nozzle and the lower descaling nozzle are installed in a concealed manner, which has a self-protection effect. An anti-collision baffle is installed outside the upper descaling nozzle, and a support rib plate is added to strengthen the structure to strengthen the protection of the descaling header. The anti-collision baffle can move in cooperation with the torsion spring to achieve elastic buffering, extend the service life of the device, solve the problem of the finishing rolling steel falling or the intermediate billet warping and hitting and deforming the descaling nozzle, and can further prevent the hot rolling descaling header from deforming. Brief Description of the Drawings

[0025] Figure 1 Figure 1 is a schematic structural diagram of an intermediate billet descaling device with self-protection function provided by the present invention;

[0026] Figure 2 Figure 2 is a three-dimensional connection structure diagram of the upper descaling nozzle, the lower descaling nozzle and the anti-collision baffle in the present invention;

[0027] Figure 3 The present invention Figure 2 front view;

[0028] Figure 4 The present invention Figure 3 A-A cross-sectional view.

[0029] Among them:

[0030] Roller conveyor - 1; Intermediate billet body - 2; Upper descaling header - 3; Lower descaling header - 4; Upper descaling nozzle - 5; Lower descaling nozzle - 6; Connecting plate - 7; Anti-collision baffle - 8; Through hole - 9; Support rib plate - 10; Pipe seat - 11; Flange - 12;

[0031] Upper pinch roll - 101; Lower pinch roll - 102. Detailed Description of the Embodiment

[0032] The present invention will be further described in detail below with reference to the drawings and specific preferred embodiments.

[0033] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "left side", "right side", "upper part", "lower part", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second", etc. do not represent the importance of the components, so it cannot be understood as a limitation to the present invention. The specific dimensions adopted in this embodiment are only for illustrative purposes of the technical solution and do not limit the protection scope of the present invention.

[0034] Such as Figures 1-4As shown in the figure, a descaling device for intermediate billets with self - protection function includes a roller conveyor 1 for transporting the intermediate billet body 2. An upper descaling header 3 is installed on the top of the roller conveyor 1, and a lower descaling header 4 is installed on the bottom of the roller conveyor 1. The outer wall of the upper descaling header 3 is communicated with upper descaling nozzles 5, and the outer wall of the lower descaling header 4 is communicated with lower descaling nozzles 6. Both the upper descaling nozzles 5 and the lower descaling nozzles 6 are inclined.

[0035] A connecting plate 7 is movably sleeved outside the upper descaling header 3. The bottom end of the connecting plate 7 is fixedly connected with a collision - proof baffle 8. A through - hole 9 corresponding to the upper descaling nozzle 5 penetrates through the outer wall of the collision - proof baffle 8. A torsion spring is sleeved outside the upper descaling header 3, and the two free ends of the torsion spring are respectively fixed in a limited way with the connecting plate 7 and the upper descaling header 3.

[0036] As a preferred implementation of the roller conveyor 1 in the present utility model: The roller conveyor 1 includes an upper pinch roll 101 and a lower pinch roll 102. Between the upper pinch roll 101 and the lower pinch roll 102 is a conveying channel, and the intermediate billet body 2 is fed at the conveying channel.

[0037] The number of both the upper pinch roll 101 and the lower pinch roll 102 is set to be multiple. Both the upper pinch roll 101 and the lower pinch roll 102 are rotatably connected to the two - side frames of the roller conveyor 1 and are driven by a driving mechanism.

[0038] Specifically, the collision - proof baffle 8 is set as an arc - shaped plate. The arc - shaped plate is formed by pressing a 5 - mm - thick steel plate. A support rib plate 10 is fixedly connected to the inner arc surface of the arc - shaped plate, and the top end of the support rib plate 10 is in contact with and slidably matched with the outer wall of the upper descaling header 3.

[0039] Specifically, the number of the upper descaling nozzles 5 is set to be multiple, and the multiple upper descaling nozzles 5 are distributed in a linear array.

[0040] The number of the lower descaling nozzles 6 is set to be multiple, and the multiple lower descaling nozzles 6 are distributed in a linear array, which is convenient for uniform flushing and improves the thoroughness and uniformity of iron oxide cleaning.

[0041] Specifically, the number of the through - holes 9 is set to be multiple, and the multiple through - holes 9 are distributed in one - to - one correspondence with the multiple upper descaling nozzles 5. The bottom end of the upper descaling nozzle 5 extends into the through - hole 9 and is located in the middle part of the wall thickness of the arc - shaped plate.

[0042] The inner diameter of the through - hole 9 is larger than the outer diameter of the end of the upper descaling nozzle 5, which is convenient for the upper descaling nozzle 5 to move in the through - hole 9.

[0043] Specifically, the combined mechanism of the upper descaling header 3 and the upper descaling nozzles 5 is located between two adjacent upper pinch rolls 101, and the horizontal height of the bottom end of the collision - proof baffle 8 is higher than the horizontal height of the bottom end of the upper pinch roll 101.

[0044] The combined mechanism of the lower descaling header 4 and the lower dephosphorization nozzle 6 is located between two adjacent lower pinch rolls 102, and the top horizontal height of the lower dephosphorization nozzle 6 is lower than the top horizontal height of the lower pinch rolls 102;

[0045] During the transmission of the intermediate billet body 2 by the upper pinch roll 101 and the lower pinch roll 102, it has a protective effect on the upper dephosphorization nozzle 5 and the lower dephosphorization nozzle 6.

[0046] Specifically, pipe seats 11 are installed on the outer sides of both the upper descaling header 3 and the lower descaling header 4, and the pipe seats 11 are installed on the two side frames of the roller conveyor 1 through screws and nuts.

[0047] Specifically, the ends of the upper descaling header 3 and the lower descaling header 4 are connected to a water pump through flanges 12, and after the water pump pumps water into the upper descaling header 3 or the lower descaling header 4, it is pressurized and sprayed out.

[0048] Specifically, the upper descaling header 3 and the lower dephosphorization nozzle 6 are distributed in parallel, and the central axes of the upper descaling header 3 and the lower dephosphorization nozzle 6 are misaligned in the direction of the intermediate billet body 2.

[0049] Specifically, the inclination angles of both the upper dephosphorization nozzle 5 and the lower dephosphorization nozzle 6 with respect to the vertical line are set to 15°. After verification, 15° is the optimal spraying angle. If the angle is too large, the impact force of the descaling water decreases; if the angle is too small, the spraying fan-shaped surfaces of the descaling water do not overlap, and the iron oxide at the non-overlapping position cannot be removed. Moreover, the upper dephosphorization nozzle 5 and the lower dephosphorization nozzle 6 are inclined towards the direction of the intermediate billet body 2, which is convenient for flushing the surface of the intermediate billet body 2 and removing the surface iron oxide.

[0050] When the present utility model is in use, the roller conveyor 1 conveys the intermediate billet body 2. The water pump pumps water into the upper descaling header 3 or the lower descaling header 4 and then pressurizes it to spray out at an angle of 15° from the upper dephosphorization nozzle 5 and the lower dephosphorization nozzle 6, which can evenly scour the two side surfaces of the intermediate billet body 2 and thoroughly remove the iron oxide on the surface of the intermediate billet body 2. During the transmission of the intermediate billet body 2 by the upper pinch roll 101 and the lower pinch roll 102, it has a protective effect on the upper dephosphorization nozzle 5 and the lower dephosphorization nozzle 6. An anti-collision baffle 8 is installed outside the upper dephosphorization nozzle 5, and a support rib plate 10 is added to strengthen the structure to further protect the upper descaling header 3. Further, the anti-collision baffle 8 can be made to move in cooperation with a torsion spring to achieve elastic buffering. After specific application, it plays a protective role for the descaling nozzle, and no abnormal nozzle angle problem has occurred during the production process.

[0051] The above has described the embodiments of the present utility model in detail in conjunction with the accompanying drawings, but the present utility model is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present utility model, various changes, modifications, substitutions, and variations made to these embodiments still fall within the protection scope of the present utility model.

Claims

1. A descaling device for intermediate billets with a self - protection function, comprising a roller conveyor (1) for transporting an intermediate billet body (2), characterized in that An upper descaling header (3) is installed on the top of the roller conveyor (1), and a lower descaling header (4) is installed on the bottom of the roller conveyor (1). Upper descaling nozzles (5) are communicated and arranged on the outer wall of the upper descaling header (3), and lower descaling nozzles (6) are communicated and arranged on the outer wall of the lower descaling header (4), and both the upper descaling nozzles (5) and the lower descaling nozzles (6) are inclined; A connecting plate (7) is movably sleeved outside the upper descaling header (3). The bottom end of the connecting plate (7) is fixedly connected with a collision-proof baffle (8). A through hole (9) corresponding to the upper descaling nozzle (5) penetrates through the outer wall of the collision-proof baffle (8). A torsion spring is sleeved outside the upper descaling header (3), and the two free ends of the torsion spring are respectively limited and fixed with the connecting plate (7) and the upper descaling header (3).

2. The descaling device for intermediate billets with self - protection function according to claim 1, characterized in that, The collision-proof baffle (8) is arranged as an arc-shaped plate, and a support rib plate (10) is fixedly connected to the inner arc surface of the arc-shaped plate. The top end of the support rib plate (10) is attached to and slidably matched with the outer wall of the upper descaling header (3).

3. The descaling device for intermediate billets with self - protection function according to claim 1, characterized in that, The number of the upper descaling nozzles (5) is set to be multiple, and the multiple upper descaling nozzles (5) are distributed in a linear array; The number of the lower descaling nozzles (6) is set to be multiple, and the multiple lower descaling nozzles (6) are distributed in a linear array.

4. The intermediate billet descaling device with a self-protection function according to claim 3, characterized in that, The number of the through holes (9) is set to be multiple, and the multiple through holes (9) are distributed in one-to-one correspondence with the multiple upper descaling nozzles (5). The bottom end of the upper descaling nozzle (5) extends into the through hole (9) and is located in the middle part of the wall thickness of the collision-proof baffle (8); The inner diameter of the through hole (9) is larger than the outer diameter of the end of the upper descaling nozzle (5).

5. The descaling device for intermediate billets with a self - protection function according to claim 1, characterized in that, The roller conveyor (1) includes an upper pinch roll (101) and a lower pinch roll (102). A conveying channel is formed between the upper pinch roll (101) and the lower pinch roll (102), and the intermediate billet body (2) is fed at the conveying channel; The number of both the upper pinch roll (101) and the lower pinch roll (102) is set to be multiple, and both the upper pinch roll (101) and the lower pinch roll (102) are rotatably connected to the two side frames of the roller conveyor (1) and are driven by a driving mechanism.

6. The descaling device for intermediate billets with self - protection function according to claim 5, characterized in that, The combined mechanism of the upper descaling header (3) and the upper descaling nozzles (5) is located between two adjacent upper pinch rolls (101), and the horizontal height of the bottom end of the collision-proof baffle (8) is higher than the horizontal height of the bottom end of the upper pinch roll (101); The combined mechanism of the lower descaling header (4) and the lower descaling nozzles (6) is located between two adjacent lower pinch rolls (102), and the horizontal height of the top end of the lower descaling nozzle (6) is lower than the horizontal height of the top end of the lower pinch roll (102).

7. The intermediate billet descaling device with a self - protection function according to claim 6, characterized in that, Pipe seats (11) are installed on the outer sides of both the upper descaling header (3) and the lower descaling header (4), and the pipe seats (11) are installed on the two side frames of the roller conveyor (1) through screws and nuts.

8. The descaling device for intermediate billets with self-protection function according to claim 1, characterized in that, The ends of the upper descaling header (3) and the lower descaling header (4) are connected to a water pump through flanges (12). After the water pump pumps water into the upper descaling header (3) or the lower descaling header (4), it is pressurized and sprayed out.

9. The descaling device for intermediate billets with self - protection function according to claim 1, characterized in that, The upper descaling header (3) and the lower descaling nozzles (6) are parallelly distributed, and the central axes of the upper descaling header (3) and the lower descaling nozzles (6) are misaligned in the direction of the intermediate billet body (2).

10. The descaling device for intermediate billets with a self - protection function according to claim 1, characterized in that, The inclination angles of the upper dephosphorization nozzle (5) and the lower dephosphorization nozzle (6) with respect to the vertical line are both set to 15°.

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