Rod and wire cooling water tank

Abstract

The utility model provides a rod and wire rod cooling water tank, a cooling channel with the length direction consistent with the rod and wire rod conveying direction is arranged in a tank body in a penetrating manner, annular nozzles which are arranged at intervals from upstream to downstream and have the consistent annular core direction are arranged on the cooling channel, and a carrier roller assembly with the axis perpendicular to the rod and wire rod conveying direction is arranged below the cooling channel. The top roller face, supporting the rod wire, of the carrier roller assembly is located at the bottom of the cooling channel. When the rod wire passes through the cooling channel of the water tank, the top roller surface of the carrier roller assembly is contacted with the surface of the rod wire, so that the kinetic energy of the rod wire passing through the cooling channel is maintained, the rod wire is prevented from staying in the cooling channel, and the production efficiency of the rod wire is effectively ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of steel rolling production technology, and specifically relates to a bar and wire rod cooling water tank. BACKGROUND

[0002] In the production process of bar and wire rod, the bar and wire rod needs to be cooled by a water tank after hot rolling. The water tank in the prior art usually uses annular nozzles to cool the bar and wire rod. The nozzle is not only the cooling unit of the water tank, but also the passage of the bar and wire rod through the water tank. In order to ensure that the bar and wire rod passing through the water tank is fully cooled, multiple water tanks are usually arranged on the production line and are connected from upstream to downstream to form a whole, and the length thereof can reach about seven meters. Due to the excessive length of the whole water tank, the bar and wire rod will continuously slow down in the process of passing through the nozzle of the water tank due to the influence of the cooling liquid and frictional resistance, and the rolled piece may slow down to a stop in the water tank and fail to reach the downstream equipment, resulting in that the production process cannot be normally carried out. SUMMARY

[0003] The utility model aims at providing a bar and wire rod cooling water tank to reduce the kinetic energy loss of the bar and wire rod in the water tank and enable the bar and wire rod to smoothly reach the downstream process.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of a bar and wire rod cooling water tank. The outlet end of a guide and guard for conveying the bar and wire rod is provided with a square box-shaped water tank body. A cooling channel with the length direction consistent with the bar and wire rod conveying direction is arranged in the water tank body. Annular nozzles are arranged in the cooling channel from upstream to downstream at intervals and have the same ring core direction. A roller assembly with the shaft perpendicular to the bar and wire rod conveying direction is arranged below the cooling channel. The two ends of the roller assembly are rotationally connected to the water tank body. The top roller surface of the roller assembly supporting the bar and wire rod is located at the bottom of the cooling channel.

[0005] The utility model arranges the roller assembly with the shaft perpendicular to the bar and wire rod conveying direction below the cooling channel. When the bar and wire rod pass through the cooling channel of the water tank, the top roller surface of the roller assembly is in contact with the surface of the bar and wire rod. The roller surface and the bar and wire rod are in rolling friction. The kinetic energy of the bar and wire rod passing through the cooling channel is maintained as much as possible, and the bar and wire rod is prevented from stopping in the cooling channel, thereby effectively ensuring the production efficiency of the bar and wire rod. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 、 2 are respectively a plan view and an elevation view of the water tank;

[0007] Figure 3 is a sectional view of the roller assembly;

[0008] Figure 4 is a schematic view of the annular nozzle cooperating with the roller;

[0009] Figure 5 is a sectional view at A-A of Figure 6

[0010] Figure 6 is a plan view of the mobile trolley cooperating with the hydraulic cylinder;

[0011] Figure 7 is a front view of the water tank in the assembled state;

[0012] Figure 8 is an enlarged view of B of Figure 4 DETAILED DESCRIPTION

[0013] Referring to the bar material cooling water tank shown in the drawings, the outlet end of the guide of the bar material conveying device is provided with a square box-shaped cooling water tank body 1, a cooling channel 10 with the length direction consistent with the bar material conveying direction is arranged in the tank body 1, ring-shaped nozzles 13 arranged at intervals from upstream to downstream and with the ring core direction consistent are arranged on the cooling channel 10, a roller assembly 20 with the shaft perpendicular to the bar material conveying direction is arranged below the cooling channel 10, the roller assembly 20 is rotationally connected to the tank body 1 at both ends, and the top roller surface of the roller assembly 20 supporting the bar material is located at the bottom of the cooling channel 10. Figures 1-8 In the above scheme, the bar material continues to move downstream from the guide into the cooling channel 10 of the tank body 1, and the cooling channel 10 is fixedly installed in the tank body 1 of the water tank. During the process of the bar material passing through the ring-shaped nozzles 13, the ring-shaped nozzle openings spray cooling liquid towards the surface of the bar material to cool and temper the bar material, the tank body 1 is provided with a liquid storage pool, the tank cover can be opened to facilitate the injection of cooling liquid or the replacement of the ring-shaped nozzles 13, and the cooling liquid sprayed on the surface of the bar material flows out of the tank body 1 and flows into the pit below the tank body 1. The roller assembly 20 below the cooling channel 10 rotates simultaneously with the movement of the bar material, and the top roller surface of the roller assembly 20 supports the bar material, which can reduce the wear of the inner hole wall of the ring-shaped nozzles 13 by the bar material, and the linear speed of the roller surface contacting the bar material is consistent with the moving speed of the bar material, the roller surface and the bar material are in rolling friction, the roller assembly 20 can maintain the kinetic energy of the bar material when passing through the cooling channel, avoid the bar material from stopping in the cooling channel, and ensure the production efficiency of the bar material.

[0014]

[0015] ​​​More specifically, the cooling channel 10 is composed of cooling channel unit segments 10a arranged in series, and the cooling channel unit segments 10a are arranged at intervals, and a roller assembly 20 is arranged at the upstream end of each cooling channel unit segment 10a. In the above scheme, the roller faces of the cooling channel unit segments 10a and the roller assembly 20 are arranged alternately in sequence along the conveying route of the rod wire, and the rod wire can obtain a more uniform kinetic energy supplement through the uniformly spaced roller assemblies 20, so that the conveying process is more stable; the uniform spacing of the cooling channel unit segments 10a allows the rod wire to have sufficient heat exchange time with the cooling liquid sprayed by the annular nozzle 13, and the heat exchange distribution of the rod wire with the cooling liquid in the rod length direction is also more uniform.

[0016] As shown in Figure 4 , Figure 8 Each cooling channel unit segment 10a includes a downstream end of an upstream pipe 11 inserted into an upstream end of a downstream pipe 12, and the inserted segments of the upstream pipe 11 and the downstream pipe 12 form a conical gap cavity to form an annular nozzle 13. The cooling liquid spraying direction of the annular nozzle 13 is a combined movement direction of the radial direction pointing to the pipe core and the parallel direction pointing to the downstream direction. The annular nozzle 13 can make the peripheral surface of the rod wire contact the cooling liquid synchronously, and the cooling effect is uniform. Preferably, the inner diameters of the upstream pipe 11 and the downstream pipe 12 are consistent and coaxially arranged, which facilitates uniform production and arrangement, and ensures that the rod wire does not collide with the annular nozzle 13 in the cooling channel 10.

[0017] Preferably, the roller assembly 20 includes a roller shaft 21 and a roller 22 fixed on the roller shaft 21, and the shafts of the two are collinear, and the top roller face of the roller 22 constitutes a supporting unit of the cooling channel 10 for supporting the rod wire, and one end of the roller shaft 21 is connected to the output end of the motor 40. The cross section of the roller face of the roller 22 is an inwardly concave arc, and the center of the top of the roller face is slightly higher than the bottom of the inner hole of the annular nozzle 13 accommodating the rod wire. In the above scheme, the roller assembly 20 transmits power from the motor 40 to the rod wire, and provides stable kinetic energy supplement for the rod wire, so as to ensure that the rod wire can smoothly pass through the cooling channel 10 by overcoming the resistance of the cooling liquid and other factors. The inwardly concave arc-shaped roller face of the roller 22 is matched with the surface of the rod wire, so as to avoid scratching the surface of the rod wire.

[0018] In order to reduce the cooling liquid remaining on the surface of the rod wire after passing through the downstream end of the cooling channel 10, the annular nozzle 13 comprises forward cooling nozzles and reverse cooling nozzles, the annular nozzles 13 of the upstream section and the middle section of the cooling channel 10 are forward cooling nozzles, and the annular nozzles 13 of the downstream section of the cooling channel 10 are reverse cooling nozzles, wherein the cooling liquid injection direction of the reverse cooling nozzles is a combined movement direction of the radial direction pointing to the pipe core and the parallel direction pointing to the upstream direction, and the end of the cooling channel 10 is provided with a water sweeping nozzle 14 for spraying air in the direction of the pipe diameter itself. The angle between the liquid injection direction of the annular nozzle 13 and the surface profile of the rod wire is an acute angle, and the water sweeping nozzle 14 can blow away the cooling liquid on the surface of the rod wire after cooling, avoiding corrosion of the rod wire caused by the remaining cooling liquid.

[0019] As a preferred embodiment, the cooling channels 10 in the box body 1 are arranged side by side in two to four, and the inlet of the upstream end of each cooling channel 10 is in the same plumb surface, the pipe length direction of the cooling channel 10 is parallel to each other and at least includes two different hole diameters. In the production of special steel, in order to meet the market demand of multiple specifications and small batch, and to reduce the investment cost, it is necessary to set up a rod wire composite line which can roll both rods and wires, and the traditional single-channel water tank can only accommodate cooling of one specification of rod or wire. When changing the rolling specification, the corresponding nozzle needs to be replaced, which is time-consuming and laborious, and the investment is large. Therefore, the present application arranges two to four cooling channels 10 side by side in the box body 1, and the hole diameters of each cooling channel 10 are different to accommodate different specifications of rod wire, without the need to replace the annular nozzle 13 of the water tank separately, effectively improving the rolling efficiency.

[0020] In order to facilitate the switching of the multi-channel water tank for different specifications of rod wire, a more specific scheme is that the base 2 of the box body 1 is fixed on the moving trolley 50, the side beam 51 of the moving trolley 50 is provided with a hydraulic cylinder 60 for driving the displacement of the moving trolley 50, the piston rod 61 of the hydraulic cylinder 60 is fixedly connected with the outer side surface of the side beam 51, the moving trolley 50 comprises a cross beam 52 supporting the box body 1 and a longitudinal beam 53 connecting the cross beam 52, the roller 54 below the cross beam 52 is in rolling cooperation with the guide rail 30 on the ground, the track length direction of the guide rail 30 is perpendicular to the pipe length direction of the cooling channel 10, and the rod length direction of the piston rod 61 is consistent with the track length direction of the guide rail 30. When it is necessary to switch the rolling specifications of the rod or wire, the moving trolley 50 is driven by the hydraulic cylinder 60 to move along the track length direction of the guide rail 30, and the water tank box body 1 fixed on the moving trolley 50 moves with it, so that the cooling channel 10 with a hole diameter suitable for the corresponding workpiece is transversely moved to the rolling position, that is, the axis of the cooling channel 10 coincides with the rolling center line. The piston rod 61 is fixedly connected with the side beam 51, which not only transmits driving force, but also limits the moving trolley 50 in the vertical direction of the track length of the guide rail 30.

[0021] Preferably, the roller surface of the roller 54 is concave, and the wheel concave of the roller 54 and the guide rail 30 form a limiting rolling fit, further ensuring that the moving trolley 50 only moves in the rail length direction of the guide rail 30.

Claims

1. A bar wire cooling tank characterized by: The outlet end of the guide of the delivery rod wire is provided with a square box-shaped cooling water tank body (1), a cooling channel (10) with the length direction consistent with the delivery direction of the rod wire is arranged in the tank body (1), the cooling channel (10) is provided with annular nozzles (13) arranged at intervals from upstream to downstream and consistent in the ring core direction, the lower side of the cooling channel (10) is provided with a roller assembly (20) with the shaft perpendicular to the delivery direction of the rod wire, the two ends of the roller assembly (20) are rotationally connected with the tank body (1), and the top roller surface of the roller assembly (20) supporting the rod wire is located at the bottom of the cooling channel (10).

2. The rod wire cooling tank of claim 1, wherein: The cooling channel (10) is composed of cooling channel unit segments (10a) arranged in sequence, and the cooling channel unit segments (10a) are arranged at intervals.

3. The rod wire cooling tank of claim 1, wherein: Each cooling channel unit segment (10a) comprises a downstream end of an upstream pipe (11) inserted into an upstream end of a downstream pipe (12), the inserted segments of the upstream pipe (11) and the downstream pipe (12) form an annular nozzle (13) in the form of a tapered gap cavity, and the cooling liquid injection direction of the annular nozzle (13) is a combined movement direction of the radial direction pointing to the pipe core and the parallel direction pointing to the downstream direction.

4. The rod wire cooling tank of claim 1, wherein: The roller assembly (20) comprises a roller shaft (21) and a roller (22) fixed on the roller shaft (21), the shafts of the two are collinear, the top roller surface of the roller (22) forms a supporting unit of the cooling channel (10) for supporting the rod wire, and one end of the roller shaft (21) is connected with the output end of a motor (40).

5. The rod wire cooling tank of claim 4, wherein: The cross section of the roller surface of the roller (22) is an inwardly recessed arc, and the top center of the roller surface is slightly higher than the bottom of the inner hole of the annular nozzle (13) accommodating the rod wire.

6. The rod wire cooling tank of claim 1, wherein: The cooling channels (10) in the tank body (1) are arranged side by side, 2-4 cooling channels (10) are arranged, and the inlet of the upstream end of each cooling channel (10) is in the same plumb surface, the pipe length directions of the cooling channels (10) are parallel to each other and at least include two different hole diameters.

7. The rod wire cooling tank of claim 2, wherein: The annular nozzle (13) comprises forward cooling nozzles and reverse cooling nozzles, the annular nozzles (13) of the upstream segment and the middle segment of the cooling channel (10) are forward cooling nozzles, the annular nozzles (13) of the downstream segment of the cooling channel (10) are reverse cooling nozzles, the cooling liquid injection direction of the reverse cooling nozzle is a combined movement direction of the radial direction pointing to the pipe core and the parallel direction pointing to the upstream direction, and the end of the cooling channel (10) is provided with a water sweeping nozzle (14) blowing air towards the pipe diameter direction.

8. The rod wire cooling tank of claim 1, wherein: The base (2) of the tank body (1) is fixed on a moving trolley (50), the outer side of the side beam (51) of the moving trolley (50) is provided with a hydraulic cylinder (60) driving the displacement of the moving trolley (50), the piston rod (61) of the hydraulic cylinder (60) is fixedly connected with the outer side surface of the side beam (51), the moving trolley (50) comprises a cross beam (52) supporting the tank body (1) and a longitudinal beam (53) connecting the cross beam (52), the roller (54) below the cross beam (52) is in rolling cooperation with the guide rail (30) of the ground, the rail length direction of the guide rail (30) is perpendicular to the pipe length direction of the cooling channel (10), and the rod length direction of the piston rod (61) is consistent with the rail length direction of the guide rail (30).

9. The rod wire cooling tank of claim 8, wherein: The roller (54) has a concave surface, and the concave surface and the guide rail (30) form a limiting rolling fit.

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