CN215466916U

CN215466916U - Frame inner-closed dust removal structure for hot rolling temper mill

Info

Publication number: CN215466916U
Application number: CN202120858786.6U
Authority: CN
Inventors: 祝翠荣; 夏定玲; 安甲乙; 李张翼
Original assignee: Wisdri Engineering and Research Incorporation Ltd
Current assignee: Wisdri Engineering and Research Incorporation Ltd
Priority date: 2021-04-25
Filing date: 2021-04-25
Publication date: 2022-01-11
Anticipated expiration: 2031-04-25

Abstract

The utility model provides an enclosed dust removal structure in a frame for a hot rolling planisher, which comprises an inlet dust collection cover and an outlet dust collection cover, wherein the inlet dust collection cover and the outlet dust collection cover are respectively arranged at the inlet side and the outlet side of the planisher, the inlet dust collection cover covers the roll gaps of an upper working roll and a lower working roll, an inlet passage for strip steel to pass through is arranged on the inlet dust collection cover, the outlet dust collection cover covers the roll gaps of the upper working roll and the lower working roll and the roll gaps of the upper working roll and an upper supporting roll, and an outlet passage for strip steel to pass through is arranged on the outlet dust collection cover. The utility model discloses a set up the dust cage in the position that planisher entrance side and outlet side easily produced the iron scale dust, make the iron scale dust that flies upward fall to the dust cage in, realize closed dust absorption, improved dust removal effect, reduced the influence of dust to band steel surface quality.

Description

Frame inner-closed dust removal structure for hot rolling temper mill

Technical Field

The utility model belongs to the technical field of hot rolling leveling, and particularly relates to an enclosed dust removal structure in a frame for a hot rolling leveling machine.

Background

The hot rolling leveling can improve the structure of a hot rolled product, effectively eliminate the yield platform of the strip steel, improve the plate shape and the surface quality and improve the competitiveness of a hot rolled plate strip product. In the process of planishing and rolling the surface of the strip steel, oxides on the surface of the strip steel can be separated from a strip steel matrix and fall off, which can be verified by observing black powder on equipment in a stand, so that a dust removal device is required to be arranged at the stand of a common hot rolling planishing unit.

The frame dust removing device of the existing hot rolling planishing mill is generally arranged at an inlet and an outlet of a frame, and part of machine sets are limited by investment, equipment arrangement conditions and the like. However, in terms of practical use effect, the dust suction port is difficult to be in close contact with the strip steel to form a closed space, and the practical dust removal effect is not ideal.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that in the prior art, the actual dust removal effect is poor because a dust suction port is difficult to be in close contact with strip steel to form a closed space.

Therefore, the utility model provides a frame internal closed dust removal structure for a hot rolling planisher, which comprises an inlet dust collection cover and an outlet dust collection cover, wherein the inlet dust collection cover and the outlet dust collection cover are respectively arranged at the inlet side and the outlet side of the planisher, the inlet dust collection cover covers the roll gaps of an upper working roll and a lower working roll, an inlet passage for strip steel to pass through is formed in the inlet dust collection cover, the outlet dust collection cover covers the roll gaps of the upper working roll and the lower working roll and the roll gaps of the upper working roll and an upper supporting roll, and an outlet passage for strip steel to pass through is formed in the outlet dust collection cover.

Furthermore, one side of the inlet dust hood, which is close to the roll surface of the working roll, is provided with two sections of connected arc-shaped guide plates, the shapes of the two sections of arc-shaped guide plates are respectively matched with the roll surfaces of the upper working roll and the lower working roll, and the arc-shaped guide plates of each section are opposite to the corresponding roll surface and are arranged with a certain gap with the roll surface.

Furthermore, one side of the outlet dust collection hood, which is close to the roller surface, is provided with three sections of arc-shaped guide plates which are sequentially connected from top to bottom, the shapes of the three sections of arc-shaped guide plates are respectively matched with the roller surfaces of the upper supporting roller, the upper working roller and the lower working roller, and the arc-shaped guide plates of all the sections are just opposite to the corresponding roller surfaces and are arranged with a certain gap between the arc-shaped guide plates and the roller surfaces.

Furthermore, the inlet dust collecting cover and the outlet dust collecting cover are both connected with a suction mechanism for pumping away dust in the dust collecting covers.

Further, the suction mechanism comprises a negative pressure suction dust collection collecting pipe and a negative pressure controller used for adjusting the negative pressure intensity in the negative pressure suction dust collection collecting pipe.

Furthermore, the inlet dust collecting cover and the outlet dust collecting cover are both connected with telescopic hydraulic cylinders which drive the dust collecting covers to be close to or far away from the roller surface.

Further, the inlet dust hood and the outlet dust hood are arranged along the whole width of the corresponding roller surface.

Compared with the prior art, the utility model has the beneficial effects that:

according to the frame inner closed dust removal structure for the hot rolling temper mill, the dust collection covers are arranged at the positions where the iron scale dust is easily generated at the inlet side and the outlet side of the temper mill, so that the flying iron scale dust falls into the dust collection covers, closed dust collection is realized, the dust removal effect is improved, and the influence of the dust on the surface quality of strip steel is reduced.

The present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic view of an enclosed dust removing structure in a frame for a hot rolling temper mill according to the present invention;

FIG. 2 is a schematic view of the inlet dust cage of the present invention;

fig. 3 is a schematic view of the construction of the outlet dust cage of the present invention.

Description of reference numerals: 1. an upper supporting roller; 2. an upper work roll; 3. an inlet dust cage; 4. a telescopic hydraulic cylinder; 5. a lower working roll; 6. a suction mechanism; 7. strip steel; 8. an outlet dust cage; 9. an arc-shaped guide plate; 10. an inlet channel; 11. an outlet channel.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The oxide on the surface of the strip steel 7 has high hardness and is lack of ductility relative to the matrix, the strip steel 7 is deformed to a certain degree in the planishing rolling process, the elongation at each position in the thickness direction of the strip steel 7 is slightly different, and the oxide on the surface can be separated from the matrix of the strip steel and fall off. According to analysis, dust at the inlet of the temper mill is concentrated at the roll gap between the upper working roll 2 and the lower working roll 5, dust at the outlet of the temper mill is collected at the roll gap between the upper working roll 2 and the lower working roll 5, the four-roll temper mill can be brought into the roll gap between the upper working roll 2 and the upper supporting roll 1 along the rotation direction of the roll system, and the six-roll temper mill is brought into the roll gap between the upper working roll 2 and the upper middle roll. Based on this, the present embodiment provides an enclosed dust removing structure in a frame for a hot rolling temper mill, taking a four-roll temper mill as an example, as shown in fig. 1, fig. 2 and fig. 3, the enclosed dust removing structure includes an inlet dust collecting hood 3 and an outlet dust collecting hood 8 respectively disposed at an inlet side and an outlet side of the temper mill, the inlet dust collecting hood 3 covers roll gaps of upper and lower working rolls, an inlet passage 10 for strip steel to pass through is formed in the inlet dust collecting hood 3, the outlet dust collecting hood 8 covers roll gaps of the upper working roll 2 and the lower working roll 5 and roll gaps of the upper working roll 2 and the upper supporting roll 1, and an outlet passage 11 for strip steel to pass through is formed in the outlet dust collecting hood 8. In this embodiment, during normal operation, when the temper mill is in a temper rolling mode, the iron oxide scale dust generated on the inlet side and the outlet side of the temper mill is respectively covered in the closed spaces of the inlet dust collecting cover 3 and the outlet dust collecting cover 8 for centralized processing, so that closed dust collection is realized, and the dust removal effect on the inlet side and the outlet side of the temper mill is improved. And because the inlet dust-collecting hood 3 and the outlet dust-collecting hood 8 are both provided with passages for the strip steel to pass through, the arrangement of the dust-collecting hoods does not influence the normal production of the strip steel. Optimally, in order to enable the dust collection cover to cover a wider dust collection surface, the inlet dust collection cover 3 and the outlet dust collection cover 8 are arranged along the full width of the corresponding roller surface, so that the dust collection effect is ensured.

Furthermore, for the treatment of the iron oxide scale dust collected in the dust hood, a suction mechanism 6 for sucking away the dust in the dust hood can be connected on the inlet dust hood 3 and the outlet dust hood 8; specifically, the suction mechanism 6 comprises a negative pressure suction dust removal collecting pipe and a negative pressure controller, the negative pressure suction dust removal collecting pipe is communicated with the inside of the dust hood, and the negative pressure controller is used for adjusting the negative pressure intensity in the negative pressure suction dust removal collecting pipe to enable the negative pressure suction dust removal collecting pipe to be in a negative pressure state, so that air flow and iron scale dust in the dust hood are actively guided to move into the negative pressure suction dust removal collecting pipe, the iron scale dust collected in the dust hood is further sucked away, the contact between the iron scale dust and the surface of the strip steel is further reduced, and the quality of the strip steel is improved. The iron oxide scale dust pumped by the pumping mechanism 6 can be connected with a sintering plate dust remover or a cloth bag filter through a pipeline and is discharged to outdoor air through a high-pressure centrifugal fan.

In an optimized implementation mode, as shown in fig. 2, two connected arc guide plates 9 are arranged on one side of the inlet dust collection hood 3 close to the roll surface of the working roll, the shapes of the two arc guide plates 9 are respectively matched with the roll surfaces of the upper working roll and the lower working roll, and each arc guide plate 9 is over against the corresponding roll surface and is arranged with a certain gap between the arc guide plate 9 and the roll surface. Through design arc guide plate 9 on entry dust cage 3 for entry dust cage 3 can be more close to the roller face and arrange, thereby can suck away the dust on the roller face, and the compressed air who thoughtlessly has the dust simultaneously also can be leading-in to entry dust cage 3 through this arc guide plate 9 in the suction in-process, and the suction effect through suction mechanism takes away the iron oxide scale dust, has effectively avoided the air current field to produce the turbulent flow, has further improved dust removal effect.

The structural design of the outlet dust collection hood 8 can refer to the inlet dust collection hood 3, specifically, as shown in fig. 3, three sections of arc guide plates 9 which are sequentially connected are arranged on one side, close to the roller surface, of the outlet dust collection hood 8 from top to bottom, the shapes of the three sections of arc guide plates 9 are respectively matched with the roller surfaces of the upper supporting roller 1, the upper working roller 2 and the lower working roller 5, and the arc guide plates 9 of each section are opposite to the corresponding roller surface and are arranged with a certain gap between the corresponding roller surface and the roller surface.

Furthermore, the inlet dust hood 3 and the outlet dust hood 8 are both connected with telescopic hydraulic cylinders 4 for driving the dust hoods to be close to or far away from the roller surface, the dust hoods of the corresponding blowing and sucking components are driven to retreat to a safe position through the telescopic hydraulic cylinders 4 when the roller is replaced or overhauled, and the dust hoods are pushed to a position close to the roller surface during normal work, so that a closed dust collection effect is realized.

In conclusion, the dust collection cover is arranged at the position where the iron scale dust is easily generated at the inlet side and the outlet side of the temper mill, so that the flying iron scale dust falls into the dust collection cover, closed dust collection is realized, the dust collection effect is improved, and the influence of the dust on the surface quality of the strip steel is reduced.

The above examples are merely illustrative of the present invention and should not be construed as limiting the scope of the utility model, which is intended to be covered by the claims and any design similar or equivalent to the scope of the utility model.

Claims

1. The utility model provides a closed dust removal structure in frame for hot rolling levelling machine, its characterized in that, is including setting up entry dust cage and the export dust cage in levelling machine entrance side and outlet side respectively, the entry dust cage covers upper and lower working roll gap and arranges, set up the entry passageway that supplies belted steel to pass on the entry dust cage, the roll gap of working roll and lower working roll and the roll gap of upper working roll and upper supporting roll are arranged to the export dust cage cover, set up the exit passage that supplies the belted steel to pass on the export dust cage.

2. The frame inner closed dust removing structure for the hot rolling temper mill according to claim 1, wherein one side of the inlet dust cage close to the roll surface of the working roll is provided with two connected arc-shaped guide plates, the shapes of the two arc-shaped guide plates are respectively matched with the roll surfaces of the upper working roll and the lower working roll, and each arc-shaped guide plate is opposite to the corresponding roll surface and is arranged with a certain gap with the roll surface.

3. The frame inner closed dust removing structure for the hot rolling temper mill according to claim 1, wherein the outlet dust cage is provided with three arc guide plates which are sequentially connected from top to bottom on the side close to the roll surface, the shapes of the three arc guide plates are respectively matched with the roll surfaces of the upper supporting roll, the upper working roll and the lower working roll, and each arc guide plate is opposite to the corresponding roll surface and is arranged with a certain gap with the roll surface.

4. The in-frame closed dust-removing structure for a hot rolling temper mill according to claim 1, wherein a suction mechanism for sucking away dust in the dust cage is connected to each of the inlet dust cage and the outlet dust cage.

5. The in-frame closed dust-removing structure for a hot rolling temper mill according to claim 4, wherein the suction mechanism comprises a negative pressure suction dust-removing header, and a negative pressure controller for adjusting the intensity of the negative pressure in the negative pressure suction dust-removing header.

6. The in-frame closed dust-removing structure for the hot rolling temper mill according to claim 1, wherein a telescopic hydraulic cylinder for driving the dust-collecting cage to be close to or far from the roll surface is connected to each of the inlet dust-collecting cage and the outlet dust-collecting cage.

7. The in-frame closed dust-collecting structure for a hot rolling leveler as set forth in claim 1, wherein the inlet dust cage and the outlet dust cage are arranged along the entire width of the corresponding roll surface.