Purging device at inlet of rolling mill

Abstract

The utility model relates to the technical field of steel belt production, in particular to a rolling mill inlet purging device which comprises a supporting frame, a motor is fixedly connected to the surface of the supporting frame, a lead screw is fixedly connected to an output shaft of the motor, a square nut is connected to the surface of the lead screw in a threaded mode, and the square nut is fixedly connected to the output shaft of the motor. A connecting rod is fixedly connected to the surface of the square nut, a first purging pipe is rotatably connected to the surface of the connecting rod, a second purging pipe is rotatably connected to the surface of the connecting rod, and limiting discs are fixedly connected to the surfaces of the first purging pipe and the second purging pipe; and the surface of the first purging pipe and the surface of the second purging pipe are fixedly connected with purging nozzles. The horizontal height and angle of steel plate purging are adjusted through the purging nozzle, the purging accuracy of the purging nozzle is improved, the purging cleanliness of a steel belt is guaranteed, and then the rolling quality of the steel belt is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of steel strip production, and particularly relates to a purging device at the entrance of a rolling mill. Background Technique

[0002] A rolling mill is an important metal processing equipment, mainly used for plastic deformation processing of steel strips, and through the rolling process, it is processed into steel products with different thicknesses, widths and shapes. Oil stains, scale or other impurities on the surface of the steel strip will affect the rolling quality of the steel strip, and usually a purging device is installed at the entrance of the rolling mill.

[0003] The existing purging device at the entrance of the rolling mill cannot properly adjust the angle and height of the purging nozzle, so that the purging device cannot clean the surface of the steel strip more precisely, reducing the cleanliness of the steel strip cleaning, and thus reducing the rolling quality of the steel strip. Content of the Utility Model

[0004] The purpose of the utility model is to provide a purging device at the entrance of a rolling mill to solve the problem that the existing purging device at the entrance of the rolling mill cannot properly adjust the angle and height of the purging nozzle, so that the purging device cannot clean the surface of the steel strip more precisely, reducing the cleanliness of the steel strip cleaning, and thus reducing the rolling quality of the steel strip as mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution, a purging device at the entrance of a rolling mill: including a support frame, a motor is fixedly connected to the surface of the support frame, a lead screw is fixedly connected to the output shaft of the motor, a square nut is threadedly connected to the surface of the lead screw, a connecting rod is fixedly connected to the surface of the square nut, a first purging pipe is rotatably connected to the surface of the connecting rod, a second purging pipe is rotatably connected to the surface of the connecting rod, a limiting disk is fixedly connected to the surfaces of the first purging pipe and the second purging pipe, purging nozzles are fixedly connected to the surfaces of the first purging pipe and the second purging pipe, a fixing nut is fixedly connected to the surface of the connecting rod, a limiting bolt is threadedly connected to the surface of the fixing nut, a shunt pipe is fixedly connected to the surfaces of the first purging pipe and the second purging pipe, an air delivery pipe is fixedly connected to the surface of the shunt pipe, a first valve is arranged on the surface of the shunt pipe, and a second valve is arranged on the surface of the air delivery pipe.

[0006] Preferably, a guiding hole is formed on the surface of the support frame, and the lead screw rotates on the guiding hole of the support frame through the output shaft of the motor.

[0007] Preferably, the square nut slides on the guiding hole of the support frame. The lead screw drives the square nut to slide on the guiding hole of the support frame through rotation. The connecting rod slides on the surface of the support frame through the square nut, and the connecting rod drives the first purging pipe and the second purging pipe to slide up and down on the surface of the support frame.

[0008] Preferably, two groups of bearings are fixedly installed on the surface of the connecting rod. The first purging pipe rotates at one end of the connecting rod through the bearing, and the second purging pipe rotates at the other end of the connecting rod through the bearing. The first purging pipe and the second purging pipe drive the purging nozzles to rotate synchronously.

[0009] Preferably, a plurality of circular holes are formed on the surface of the limiting disc, and the circular holes of the limiting disc are evenly distributed in a circular shape. A plurality of purging nozzles are provided, and the purging nozzles are linearly and evenly arranged on the first purging pipe and the second purging pipe.

[0010] Preferably, the limiting bolt is perforated through the fixed nut and connected to one of the circular holes of the limiting disc. The limiting bolt restricts the rotation of the first purging pipe and the second purging pipe on the connecting rod through the circular hole of the limiting disc on the fixed nut.

[0011] Preferably, the gas transmission pipe sends gas into the first purging pipe and the second purging pipe through a shunt pipe. Two first valves are arranged on the shunt pipe, and the two first valves respectively control the gas to enter the first purging pipe and the second purging pipe.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. For this purging device, by adjusting the horizontal height and angle of purging the steel plate by the purging nozzles, the purging accuracy of the purging nozzles is improved, the purging cleanliness of the steel strip is ensured, and further the rolling quality of the steel strip is ensured.

[0014] 2. For this purging device, when the purging nozzles on the first purging pipe have a reduced purging quality due to damage, the purging nozzles on the second purging pipe can be immediately replaced to continue purging the steel plate, ensuring that the steel strip can continue to be rolled and guaranteeing the production efficiency of the steel strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a front three-dimensional structure schematic diagram of the present utility model;

[0016] Figure 2 is a side view structure schematic diagram of the present utility model;

[0017] Figure 3 is a top view structure schematic diagram of the present utility model;

[0018] Figure 4 is the present utility modelFigure 1 Schematic enlarged structure diagram at position A;

[0019] Figure 5 This utility model Figure 1 Schematic enlarged structure diagram at position B.

[0020] In the figure: 1, support frame; 2, motor; 3, lead screw; 4, square nut; 5, connecting rod; 6, bearing; 7, first purge pipe; 8, second purge pipe; 9, limit disc; 10, purge nozzle; 11, fixing nut; 12, limit bolt; 13, shunt pipe; 14, gas transmission pipe; 15, first valve; 16, second valve. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figure 1-5 , an embodiment provided by the present utility model:

[0023] A purge device at the entrance of a rolling mill: including a support frame 1, a motor 2 fixedly connected to the surface of the support frame 1, a lead screw 3 fixedly connected to the output shaft of the motor 2, a square nut 4 threadedly connected to the surface of the lead screw 3, a connecting rod 5 fixedly connected to the surface of the square nut 4, a first purge pipe 7 rotatably connected to the surface of the connecting rod 5, a second purge pipe 8 rotatably connected to the surface of the connecting rod 5, a limit disc 9 fixedly connected to the surfaces of the first purge pipe 7 and the second purge pipe 8, a purge nozzle 10 fixedly connected to the surfaces of the first purge pipe 7 and the second purge pipe 8, a fixing nut 11 fixedly connected to the surface of the connecting rod 5, a limit bolt 12 threadedly connected to the surface of the fixing nut 11. Therefore, a shunt pipe 13 is fixedly connected to the surfaces of the first purge pipe 7 and the second purge pipe 8, a gas transmission pipe 14 is fixedly connected to the surface of the shunt pipe 13, a first valve 15 is arranged on the surface of the shunt pipe 13, and a second valve 16 is arranged on the surface of the gas transmission pipe 14. This purge device can adjust the purge height and angle of the purge nozzle 10, thereby improving the purge accuracy of the purge nozzle 10, ensuring the cleanliness of the strip purge, and further ensuring the rolling quality of the strip. At the same time, when the purge nozzle 10 on the first purge pipe 7 is damaged during the purge process of the first purge pipe 7 through the purge nozzle 10, resulting in a decrease in purge quality, the purge nozzle 10 on the second purge pipe 8 can continue the purge task, ensuring that the strip can continue to be rolled and guaranteeing the production efficiency of the strip.

[0024] Furthermore, guide holes are formed on the surface of the support frame 1. The lead screw 3 rotates on the guide holes of the support frame 1 through the output shaft of the motor 2, and there are two sets of support frames 1 which are located at the entrance of the rolling mill.

[0025] Furthermore, the square nut 4 slides on the guide holes of the support frame 1. The lead screw 3 drives the square nut 4 to slide on the guide holes of the support frame 1 through rotation. The connecting rod 5 slides on the surface of the support frame 1 through the square nut 4. The connecting rod 5 drives the first purging pipe 7 and the second purging pipe 8 to slide and lift on the surface of the support frame 1. The first purging pipe 7 and the second purging pipe 8 drive the purging nozzles 10 to lift through lifting, thereby changing the purging height of the purging nozzles 10 on the steel strip.

[0026] Furthermore, two sets of bearings 6 are fixedly installed on the surface of the connecting rod 5. The first purging pipe 7 rotates at one end of the connecting rod 5 through the bearing 6, and the second purging pipe 8 rotates at the other end of the connecting rod 5 through the bearing 6. The first purging pipe 7 and the second purging pipe 8 drive the purging nozzles 10 to rotate synchronously. The first purging pipe 7 and the second purging pipe 8 change the angle of the purging nozzles 10 during rotation, thereby changing the cleaning angle of the purging nozzles 10 on the steel strip.

[0027] Furthermore, multiple circular holes are formed on the surface of the limit disc 9, and the circular holes of the limit disc 9 are evenly distributed in a circular shape. The limit disc 9 is used to limit the position of the first purging pipe 7 on the connecting rod 5. There are multiple sets of purging nozzles 10, and the purging nozzles 10 are linearly and evenly arranged on the first purging pipe 7 and the second purging pipe 8. The purging nozzles 10 clean the surface of the steel strip by blowing out gas.

[0028] Furthermore, the limit bolt 12 is connected through the fixing nut 11 to one of the circular holes of the limit disc 9. The limit bolt 12 limits the rotation of the first purging pipe 7 and the second purging pipe 8 on the connecting rod 5 through the circular hole of the limit disc 9. By connecting the limit bolt 12 through different circular holes of the limit disc 9, the limit of different angles of the first purging pipe 7 is completed.

[0029] Furthermore, the gas transmission pipe 14 sends gas to the first purging pipe 7 and the second purging pipe 8 through the shunt pipe 13. The first purging pipe 7 and the second purging pipe 8 output the gas to the steel strip through the purging nozzles 10, thereby realizing the cleaning of the steel strip. Two sets of first valves 15 are provided on the shunt pipe 13, and the two sets of first valves 15 respectively control the gas entering the first purging pipe 7 and the second purging pipe 8, while the second valve 16 controls the gas of the gas transmission pipe 14 to enter the shunt pipe 13.

[0030] Working principle: The output shaft of the motor 2 drives the lead screw 3 to rotate. The lead screw 3 drives the square nut 4 to slide up and down on the surface of the support frame 1 through rotation. The square nut 4 drives the first purge pipe 7 and the second purge pipe 8 to lift through the connecting rod 5, thereby changing the horizontal height of the purge nozzle 10 for purging the steel plate. The first purge pipe 7 and the second purge pipe 8 rotate on the connecting rod 5 through the bearing 6, thereby realizing the adjustment of the angle of the purge nozzle 10. Then, the limit bolt 12 rotates on the fixed nut 11, so that the limit bolt 12 penetrates through the circular hole of the limit disc 9 to complete the fixation of the first purge pipe 7 and the second purge pipe 8. By adjusting the horizontal height and angle of the purge nozzle 10 for purging the steel plate, the purging accuracy of the purge nozzle 10 is improved, the purging cleanliness of the steel strip is ensured, and further the rolling quality of the steel strip is ensured.

[0031] Close the first valve 15 on the second purge pipe 8 connected to the shunt pipe 13, and then open the second valve 16 on the gas transmission pipe 14. Open the first valve 15 on the shunt pipe 13 connected to the first purge pipe 7. At this time, the gas transmission pipe 14 outputs the gas to the first purge pipe 7 through the shunt pipe 13, and the first purge pipe 7 then outputs the gas to the steel strip through the purge nozzle 10. When the purge nozzle 10 on the first purge pipe 7 is damaged, open the first valve 15 on the shunt pipe 13 connected to the second purge pipe 8 and close the first valve 15 on the shunt pipe 13 connected to the first purge pipe 7. At this time, the gas transmission pipe 14 outputs the gas to the first purge pipe 7 through the shunt pipe 13, and the second purge pipe 8 then outputs the gas to the steel strip through the purge nozzle 10. When the purging quality of the purge nozzle 10 on the first purge pipe 7 decreases due to damage, the purge nozzle 10 on the second purge pipe 8 can be immediately replaced to continue purging the steel plate, ensuring that the steel strip can continue to be rolled and guaranteeing the production efficiency of the steel strip.

[0032] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A purging device for a rolling mill inlet, characterized in that: The invention comprises a support frame (1), a motor (2) is fixedly connected to the surface of the support frame (1), a screw rod (3) is fixedly connected to the output shaft of the motor (2), a square nut (4) is threadedly connected to the surface of the screw rod (3), a connecting rod (5) is fixedly connected to the surface of the square nut (4), a first purge pipe (7) is rotatably connected to the surface of the connecting rod (5), a second purge pipe (8) is rotatably connected to the surface of the connecting rod (5), a limiting disk (9) is fixedly connected to the surfaces of the first purge pipe (7) and the second purge pipe (8), and the first purge pipe (7) and the second purge pipe (8) are fixedly connected to the surfaces of the first purge pipe (7) and the second purge pipe (8). A purge nozzle (10) is fixedly connected to the surface of the first purge pipe (7) and the second purge pipe (8), a fixing nut (11) is fixedly connected to the surface of the connecting rod (5), and a limit bolt (12) is threadedly connected to the surface of the fixing nut (11). Therefore, a shunt pipe (13) is fixedly connected to the surface of the first purge pipe (7) and the second purge pipe (8), and an air supply pipe (14) is fixedly connected to the surface of the shunt pipe (13), a first valve (15) is provided on the surface of the shunt pipe (13), and a second valve (16) is provided on the surface of the air supply pipe (14).

2. A purging device for a rolling mill inlet according to claim 1, characterized in that: A guide hole is provided on the surface of the support frame (1), and the screw rod (3) rotates on the guide hole of the support frame (1) via the output shaft of the motor (2).

3. A purging device for a rolling mill inlet according to claim 1, characterized in that: The square nut (4) slides on the guide hole of the support frame (1), the screw rod (3) drives the square nut (4) to slide on the guide hole of the support frame (1) by rotation, the connecting rod (5) slides on the surface of the support frame (1) through the square nut (4), and the connecting rod (5) drives the first purge pipe (7) and the second purge pipe (8) to slide and rise and fall on the surface of the support frame (1).

4. A purging device for a rolling mill inlet according to claim 1, characterized in that: Two sets of bearings (6) are fixedly mounted on the surface of the connecting rod (5); the first purge pipe (7) rotates at one end of the connecting rod (5) via the bearings (6); the second purge pipe (8) rotates at the other end of the connecting rod (5) via the bearings (6); the first purge pipe (7) and the second purge pipe (8) drive the purge nozzle (10) to rotate synchronously.

5. A purging device for a rolling mill inlet according to claim 4, characterized in that: A plurality of groups of circular holes are provided on the surface of the limiting plate (9), and the circular holes of the limiting plate (9) are evenly distributed in a circular shape. A plurality of groups of purge nozzles (10) are provided, and the purge nozzles (10) are evenly arranged linearly on the first purge pipe (7) and the second purge pipe (8).

6. A purging device for a rolling mill inlet according to claim 5, characterized in that: The limiting bolt (12) is connected to one of the circular holes of the limiting plate (9) through a hole in the fixing nut (11); the limiting bolt (12) is on the fixing nut (11) and passes through the circular holes of the limiting plate (9) to limit the rotation of the first purge pipe (7) and the second purge pipe (8) on the connecting rod (5).

7. A purging device for a rolling mill inlet according to claim 1, characterized in that: The gas delivery pipe (14) delivers the gas to the first purge pipe (7) and the second purge pipe (8) via the shunt pipe (13). Two groups of first valves (15) are provided on the shunt pipe (13), and the two groups of first valves (15) respectively control the gas to enter the first purge pipe (7) and the second purge pipe (8).

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