Rolling mill auxiliary device with adjustable jet spacing and rolling mill

Abstract

The present invention relates to a rolling mill auxiliary device with adjustable spray spacing, comprising a water cut-off plate and a spray beam installed on the water cut-off plate, the spray beam comprising an oil-water mixing tube, a mixer installed at the inlet end of the oil-water mixing tube, a header connected to the outlet end of the oil-water mixing tube, and a plurality of nozzles installed on the header, and the spacing between the oil-water mixing tube and the water cut-off plate is adjustable. In addition, it also relates to a rolling mill, comprising an upper working roll and a lower working roll, the upper working roll and / or the lower working roll are provided with the above-mentioned rolling mill auxiliary device with adjustable spray spacing. The present invention is designed so that the spacing between the oil-water mixing tube and the water cut-off plate is adjustable. By adjusting the spacing between the two, the purpose of adjusting the spacing between the nozzle and the roller surface of the working roll can be achieved, so that the working roll obtains a good rolling lubrication effect, and avoids the normal operation of the working roll affected by factors such as working roll wear or spray beam installation errors.

Description

Technical Field

[0001] The invention belongs to the technical field of metallurgical equipment, and in particular relates to a rolling mill auxiliary device with adjustable injection spacing and a rolling mill equipped with the auxiliary device. Background Art

[0002] In the field of hot rolling of strip steel, rolling lubrication system is widely used to reduce the friction coefficient between rolled pieces and rolls, reduce rolling force and energy consumption, increase roll service life and improve product quality. Upper spray beam and lower spray beam are respectively installed on the upper and lower water cut-off plates at the outlet of the finishing mill. The spray beam is composed of water inlet pipe, oil inlet pipe, mixer, one-way valve, header, nozzle and pipe clamp. When working, water and rolling oil are mixed by the mixer and then sprayed evenly on the upper and lower working roll surfaces through the nozzle to achieve the purpose of rolling lubrication.

[0003] The temperature of the hot rolling finishing mill is high, about 750-900℃, and the sealing ring cannot withstand such high temperature, which makes it impossible to connect the upper and lower spray beams with pipe joints. Therefore, the pipes of the spray beam are fixed on the water cutting plate by one-time welding with pipe clamps. Due to the continuous wear of the working rolls and the error of the pipe installation, the spacing between the nozzle and the working roll cannot be guaranteed, resulting in poor rolling lubrication spraying effect, which can be clearly seen from the marks on the working roll surface after spray lubrication. Summary of the invention

[0004] The invention relates to a rolling mill auxiliary device with adjustable injection spacing and a rolling mill equipped with the auxiliary device, which can at least solve part of the defects of the prior art.

[0005] The present invention relates to a rolling mill auxiliary device with adjustable injection spacing, comprising a water cutting plate and a injection beam installed on the water cutting plate, the injection beam comprising an oil-water mixing pipe, a mixer installed at the inlet end of the oil-water mixing pipe, a header connected to the outlet end of the oil-water mixing pipe and a plurality of nozzles installed on the header, and the spacing between the oil-water mixing pipe and the water cutting plate is adjustable.

[0006] As one of the embodiments, the oil-water mixing tube is provided with an adjusting tube clamp for adjusting the distance between the oil-water mixing tube and the water cutting plate, the adjusting tube clamp comprises an upper clamping plate, a lower clamping plate, a base fixed on the water cutting plate and two adjusting studs located on the base, the upper clamping plate and the lower clamping plate are both passed through the two adjusting studs and the two clamping plates cooperate to hold the oil-water mixing tube, the axis of the adjusting stud is perpendicular to the plate surface of the water cutting plate, and each adjusting stud is threaded with an upper locking nut that is tightly pressed against the back of the upper clamping plate and a lower locking nut that is tightly pressed against the back of the lower clamping plate.

[0007] As one of the implementation modes, the oil-water mixing pipe includes a main pipe and a plurality of branch pipes, each of the branch pipes is connected to the header, and the main pipe and each of the branch pipes are fixed by the adjusting pipe clamps respectively.

[0008] As one of the implementation modes, the oil-water mixing pipe includes a main pipe and multiple branch pipes, each of the branch pipes is connected to the header, the main pipe, each of the branch pipes and the header are integrally formed, or the branch pipes are welded to the main pipe and the header respectively.

[0009] As one of the implementation modes, the mixer is connected with a water inlet pipe and an oil inlet pipe, and both the water inlet pipe and the oil inlet pipe have a hose section.

[0010] The present invention also relates to a rolling mill, comprising an upper working roll and a lower working roll, wherein the upper working roll and / or the lower working roll are provided with the above-mentioned rolling mill auxiliary device with adjustable injection spacing.

[0011] As one of the implementation modes, the distance between the nozzle and the corresponding working roll surface is controlled to be 180-200 mm.

[0012] The present invention has at least the following beneficial effects:

[0013] The present invention is designed such that the distance between the oil-water mixing pipe and the water cutting plate is adjustable. By adjusting the distance between the two, the purpose of adjusting the distance between the nozzle and the roller surface of the working roll can be achieved, so that the working roll can obtain a good rolling lubrication effect and avoid the normal operation of the working roll being affected by factors such as working roll wear or spray beam installation error. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 A schematic diagram of the coordination structure between the auxiliary device and the working roll provided in an embodiment of the present invention;

[0016] Figure 2 A schematic diagram of the planar structure of an auxiliary device provided in an embodiment of the present invention;

[0017] Figure 3 A schematic structural diagram of an adjustable pipe clamp provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Embodiment 1

[0020] like Figure 1-Figure 3 An embodiment of the present invention provides a rolling mill auxiliary device with adjustable injection spacing, including a water cutting plate 1 and a injection beam installed on the water cutting plate 1, the injection beam includes an oil-water mixing tube 21, a mixer 22 installed at the inlet end of the oil-water mixing tube 21, a manifold 23 connected to the outlet end of the oil-water mixing tube 21, and a plurality of nozzles 24 installed on the manifold 23, and the spacing between the oil-water mixing tube 21 and the water cutting plate 1 is adjustable.

[0021] The water cutting plate 1 can be driven by a driving device to move closer to or farther away from the working roll. It is a conventional device in the art and its specific structure will not be described in detail here.

[0022] In one of the embodiments, when the water cut plate 1 serves the upper working roll, the spray beam is installed on the lower plate surface of the water cut plate 1; when the water cut plate 1 serves the lower working roll, the spray beam is installed on the upper plate surface of the water cut plate 1.

[0023] The mixer 22 is a conventional device in the art, and its specific structure is not described in detail here. Figure 2 The mixer 22 is connected with a water inlet pipe 26 and an oil inlet pipe 27; based on the structure that the distance between the oil-water mixing pipe 21 and the water cutting plate 1 is adjustable, it is preferably designed that the water inlet pipe 26 and the oil inlet pipe 27 both have a hose section, which can meet the movement requirements of the oil-water mixing pipe 21 without causing adverse stress on the injection beam; and because the water inlet pipe 26 and the oil inlet pipe 27 are far away from the high temperature zone of the roller, the life of the hose section will not be affected.

[0024] In one embodiment, if Figure 1 and Figure 2The oil-water mixing pipe 21 includes a main pipe and a plurality of branch pipes, each of which is connected to the manifold 23; the axial direction of the manifold 23 is parallel to the axial direction of the working roll, and each nozzle 24 is sequentially arranged on the manifold 23 along the axial direction of the manifold 23, so as to evenly spray lubricating liquid onto the roll surface of the working roll; the manifold 23 is connected to the manifold 23 by a plurality of branch pipes, which ensures the stability of the working state of the manifold 23 on the one hand, and improves the uniformity of the liquid pressure in the manifold 23 on the other hand. Preferably, the main pipe, each of the branch pipes and the manifold 23 are integrally formed, or the branch pipes are respectively welded to the main pipe and the manifold 23, so as to avoid the use of pipe joints for connecting the pipe bodies, thereby ensuring the reliability of the spray beam and improving the service life of the spray beam.

[0025] The auxiliary device provided in this embodiment is designed to have an adjustable distance between the oil-water mixing tube 21 and the water cutting plate 1. By adjusting the distance between the two, the purpose of adjusting the distance between the nozzle 24 and the roller surface of the working roll can be achieved, so that the working roll can obtain a good rolling lubrication effect and avoid the normal operation of the working roll affected by factors such as working roll wear or spray beam installation errors.

[0026] Regarding the above-mentioned manner in which the distance between the oil-water mixing tube 21 and the water cutting plate 1 is adjustable, in one embodiment, as Figure 3 The oil-water mixing tube 21 is provided with an adjusting tube clamp 25 for adjusting the distance between the oil-water mixing tube 21 and the water-cutting plate 1. The adjusting tube clamp 25 comprises an upper clamp plate 252, a lower clamp plate 253, a base 251 fixed on the water-cutting plate 1 and two adjusting studs 254 located on the base 251. The upper clamp plate 252 and the lower clamp plate 253 are both passed through the two adjusting studs 254 and the two clamp plates cooperate to hold the oil-water mixing tube 21. The axis of the adjusting stud 254 is perpendicular to the plate surface of the water-cutting plate 1. An upper locking nut 255 pressed against the back of the upper clamp plate 252 and a lower locking nut 256 pressed against the back of the lower clamp plate 253 are screwed on each adjusting stud 254.

[0027] It can be understood that the oil-water mixing tube 21 can be fixedly installed on the water cutting plate 1 by the above-mentioned adjusting tube clamp 25, and the oil-water mixing tube 21 can be held and fixed by the cooperation of the upper clamp 252 and the lower clamp 253; by screwing down the locking nut 256, adjusting the position of the lower locking nut 256 on the adjusting stud 254, and by cooperating with the upper locking nut 255, the corresponding adjustment and locking of the position of the upper clamp 252 and the lower clamp 253 can be achieved, so that the target clamping position of the adjusting tube clamp 25 can be adjusted, that is, the adjustment of the distance between the oil-water mixing tube 21 and the water cutting plate 1 is achieved.

[0028] The oil-water mixing tube 21 is fixed and the distance between the oil-water mixing tube 21 and the water cutting plate 1 is adjusted by the adjusting tube clamp 25 , which has a simple structure, convenient operation and high working reliability.

[0029] Preferably, the oil-water mixing tube 21 is installed by means of a plurality of the above-mentioned adjusting tube clamps 25, and the position of the oil-water mixing tube 21 is adjusted by the cooperation of the adjusting tube clamps 25; in the case where the above-mentioned oil-water mixing tube 21 includes a main tube and a plurality of branch tubes, the main tube and the branch tubes can be fixed by means of the adjusting tube clamps 25 respectively, that is, the main tube is fixed by means of one adjusting tube clamp 25, and each branch tube is fixed by means of one adjusting tube clamp 25.

[0030] Of course, the adjustment method is not limited to the above-mentioned adjustment pipe clamp 25. For example, a bracket or a conventional pipe clamp can be used to fix the oil-water mixing tube 21. The bracket / conventional pipe clamp is installed on the water cutting plate 1, and the distance between the oil-water mixing tube 21 and the water cutting plate 1 is adjusted by adding or removing gaskets between the bracket / conventional pipe clamp and the water cutting plate 1; or a high-temperature resistant driving device is used to clamp the oil-water mixing tube 21, and the driving device is used to drive the oil-water mixing tube 21 close to or away from the water cutting plate 1; and so on. Examples are not listed here one by one.

[0031] Embodiment 2

[0032] An embodiment of the present invention provides a rolling mill, comprising an upper working roll and a lower working roll, wherein the upper working roll and / or the lower working roll are equipped with the rolling mill auxiliary device with adjustable injection spacing provided in the first embodiment above.

[0033] Generally, both the upper working roll and the lower working roll are equipped with the above-mentioned auxiliary device.

[0034] Preferably, the distance between the nozzle 24 and the corresponding working roll surface is controlled to be 180-200 mm, which can ensure that the working roll obtains a good lubrication effect.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rolling mill auxiliary device with adjustable spray spacing, comprising a water cut-off plate and a spray beam mounted on the water cut-off plate, the spray beam comprising an oil-water mixing pipe, a mixer mounted at the inlet end of the oil-water mixing pipe, a header connected to the outlet end of the oil-water mixing pipe, and a plurality of nozzles mounted on the header, characterized in that: The distance between the oil-water mixing pipe and the water cutting plate is adjustable; When the water cut plate serves the upper working roll, the spray beam is installed on the lower plate surface of the water cut plate; when the water cut plate serves the lower working roll, the spray beam is installed on the upper plate surface of the water cut plate; The oil-water mixing tube is provided with an adjusting tube clamp for adjusting the distance between the oil-water mixing tube and the water cutting plate, the adjusting tube clamp comprises an upper clamping plate, a lower clamping plate, a base fixed on the water cutting plate and two adjusting studs on the base, the upper clamping plate and the lower clamping plate are both passed through the two adjusting studs and the two clamping plates cooperate to hold the oil-water mixing tube, the axis of the adjusting stud is perpendicular to the plate surface of the water cutting plate, and each adjusting stud is threaded with an upper locking nut pressed against the back side of the upper clamping plate and a lower locking nut pressed against the back side of the lower clamping plate.

2. The rolling mill auxiliary device with adjustable injection spacing as claimed in claim 1, characterized in that: The oil-water mixing pipe comprises a main pipe and a plurality of branch pipes, each of the branch pipes is connected to the header, and the main pipe and each of the branch pipes are fixed by means of the adjusting pipe clamps.

3. The rolling mill auxiliary device with adjustable injection spacing as claimed in claim 1, characterized in that: The oil-water mixing pipe includes a main pipe and a plurality of branch pipes, each of the branch pipes is connected to the header, the main pipe, each of the branch pipes and the header are integrally formed, or the branch pipes are respectively welded to the main pipe and the header.

4. The rolling mill auxiliary device with adjustable injection spacing as claimed in claim 1 or 2, characterized in that: The mixer is connected with a water inlet pipe and an oil inlet pipe, and both the water inlet pipe and the oil inlet pipe have a hose section.

5. A rolling mill, comprising an upper working roll and a lower working roll, characterized in that: The upper working roll and / or the lower working roll are equipped with a rolling mill auxiliary device with adjustable spray spacing as described in any one of claims 1 to 4.

6. The rolling mill according to claim 5, characterized in that: The distance between the nozzle and the corresponding working roll surface is controlled to be 180-200 mm.

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