Guide and guard structure and rolling mill

Abstract

The utility model relates to a guide and guard structure and a rolling mill, the guide and guard structure comprises a shell, at least two guide and guard pieces and a dust collecting pipeline, the shell is located on one side of a rack housing, and a through groove extending in the transverse direction is formed in the shell; the two guide and guard parts are divided into a first guide and guard part and a second guide and guard part, one end of the first guide and guard part is rotationally connected to the upper groove wall of the through groove, the other end of the first guide and guard part is overturned up and down and faces the steel billet outlet, a dust containing cavity with a through hole in the lower cavity wall is defined by the first guide and guard part and the through groove, and the second guide and guard part extends in the horizontal direction and is installed in the through groove; the second guide plate is positioned on the lower side of the first guide plate; the dust collection pipeline is communicated with the dust containing cavity; the two guiding and guarding pieces comprise two protruding parts used for facing the steel billet outlet and protruding out of the groove opening of the through groove, a guiding gap allowing steel billets to pass through is formed between the two protruding parts, and the protruding part of the second guiding and guarding piece is provided with an air outlet in a penetrating mode. The utility model aims to solve the problems of large dust collection air volume, high energy consumption, inconvenience in maintenance and short service life of the existing dust collection mode.

Description

Technical Field

[0001] The utility model relates to the technical field of plate rolling mills, in particular to a guide structure and a rolling mill. Background Art

[0002] Steel rolling is a process in steel production. During the steel rolling process, a large amount of smoke, oil mist and water vapor will be generated, which will create a harsh working environment, damage personal health and reduce the service life of equipment.

[0003] Plate and strip mill flue gas is primarily generated in the hot steel rolling deformation zone, escaping from the mill frame along with hot air currents and water vapor within the mill frame. Currently, the flue gas from these mills is typically collected and treated using closed or semi-closed flue gas hoods installed outside the mill frame. This method of dust collection involves a large amount of flue gas diffusing into the hood, where it is collected and treated by the airflow within the hood. This requires large amounts of dust collection air volume, high energy consumption, and high construction costs. Furthermore, the mill equipment is enclosed within the flue-filled hood, making maintenance difficult and shortening its service life. Utility Model Content

[0004] Based on the above description, the utility model provides a guide structure to solve the problems that most existing dust collection methods use closed or semi-closed collection hoods, which require large dust collection air volume, high energy consumption, inconvenient maintenance and shortened service life.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A guide structure, comprising:

[0007] The shell is located on one side of the frame archway and is provided with a through slot extending in the transverse direction;

[0008] At least two guide members, the two guide members are divided into a first guide member and a second guide member, one end of the first guide member is rotatably connected to the upper groove wall of the through groove, and the other end is flipped upside down and arranged to face the billet outlet, the first guide member and the through groove enclose a dust holding chamber, the lower cavity wall of the dust holding chamber is provided with a through hole, the second guide member extends horizontally and is installed in the through groove and is located on the lower side of the first guide member; and

[0009] a dust collecting duct, connected to the dust holding chamber;

[0010] The two guide members include two protrusions facing the billet outlet and protruding from the slot of the through slot, a guide gap for the billet to pass through is formed between the two protrusions, and the protrusion of the second guide member is provided with an air outlet.

[0011] On the basis of the above technical solution, the present invention can also be improved as follows:

[0012] Furthermore, the notch of the through groove is divided into a first notch away from the billet outlet and a second notch close to the billet outlet;

[0013] The first guide member comprises:

[0014] A first guide plate includes a first end and a second end that are laterally distributed, wherein the first end is rotatably connected to the upper groove wall of the through groove, and the second end is vertically flipped and protrudes from the second groove;

[0015] a first baffle, configured to block a gap between the first end and an upper side of the first notch; and

[0016] a second baffle, for covering a gap between the second end and an upper side of the second notch;

[0017] Wherein, the first guide plate, the first baffle plate, the second baffle plate and the shell together enclose the dust holding chamber;

[0018] The protrusion is provided on the first guide plate and includes the second end;

[0019] The through hole is provided in the protruding portion.

[0020] Furthermore, the upper sides of the first notch and the second notch are respectively connected with a first connecting plate and a second connecting plate extending in the up-down direction;

[0021] The first baffle and the second baffle are respectively in contact with the side surfaces of the first connecting plate and the second connecting plate facing the through slot.

[0022] Furthermore, the second baffle includes:

[0023] a shielding portion extending horizontally and located above the protruding portion of the first guide plate;

[0024] a connecting portion extending in an up-down direction, wherein an upper end of the connecting portion is connected to an end of the shielding portion away from the through slot; and

[0025] The two overlapping portions are respectively connected to the end of the shielding portion away from the connecting portion and the lower end of the connecting portion, and are respectively overlapped with the side of the second connecting plate facing the through groove and the upper side of the first guide plate.

[0026] Furthermore, an accommodating cavity is formed between the shielding portion and the connecting portion;

[0027] The dust holding chamber includes the accommodating chamber;

[0028] The through holes are provided in a plurality, and the plurality of through holes are distributed at intervals along the longitudinal direction;

[0029] The guide structure also includes a first dust suppression structure arranged in the accommodating cavity, the first dust suppression structure includes a first dust suppression water pipe extending longitudinally and a plurality of first dust suppression nozzles arranged in the first dust suppression water pipe at intervals along the longitudinal direction, and the plurality of first dust suppression nozzles correspond one to one to the plurality of through holes.

[0030] Furthermore, the first guide member also includes two side plates, both of which extend in the transverse direction and are respectively connected to the two sides of the longitudinal direction of the first guide member, and the two ends of the two side plates are respectively connected to the first baffle and the second baffle.

[0031] Furthermore, the air outlet is provided in plurality, and the plurality of air outlets are distributed at intervals along the longitudinal direction;

[0032] The guide structure also includes a second dust suppression structure located on the lower side of the second guide member, the second dust suppression structure includes a second dust suppression water pipe extending longitudinally and a plurality of second dust suppression nozzles arranged at intervals along the longitudinal direction on the second dust suppression water pipe, and the plurality of second dust suppression nozzles correspond one to one to the plurality of air outlets.

[0033] The utility model also provides a rolling mill, comprising the guide structure.

[0034] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0035] The shell is located on one side of the frame arch. The ends of the protruding parts of the two guides are both located at the billet outlet. During the operation of the rolling mill, the upper rollers and the lower rollers deform the red steel plate to generate smoke that rushes out from the billet outlet along the rolling direction. The smoke rushing from the red steel plate directly enters the guide gap, and the lower hot smoke from the red steel plate enters the guide gap through the air outlet and merges with the upper smoke, and then passes through the through hole together into the dust holding chamber, and is then discharged from the dust collecting pipe. The shell, the two guides, the upper rollers and the frame form a smoke collection hood that is closed at the top, semi-open at the bottom and open laterally. Therefore, while ensuring the guiding function, dust can be collected at the source of smoke, reducing the dust collection air volume, avoiding smoke diffusion, and eliminating the need to cover the entire rolling mill equipment, which is beneficial to equipment maintenance and extends service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic structural diagram of a guide structure provided by an embodiment of the present utility model;

[0037] Figure 2 for Figure 1 A schematic diagram of a portion of the structure from another perspective (including part of the second baffle);

[0038] Figure 3 A cross-sectional schematic diagram of a guide structure provided in an embodiment of the present utility model;

[0039] Figure 4 for Figure 1 A structural diagram from another perspective (including part of the shell).

[0040] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0041] 1. Shell; 11. Through slot; 111. First notch; 112. Second notch; 113. First connecting plate; 114. Second connecting plate; 2. Guide; 21. First guide; 211. Dust holding chamber; 212. Through hole; 213. First guide plate; 2131. First end; 2132. Second end; 214. First baffle; 215. Second baffle; 2151. Shielding portion; 2152. Connecting portion; 2153. Overlap portion; 2154. Holding chamber; 216. Side plate; 22. Second guide; 221. Air outlet; 23. Protrusion; 231. Guide gap; 3. Dust collecting duct; 4. First dust suppression structure; 41. First dust suppression water pipe; 42. First dust suppression nozzle; 5. Second dust suppression structure; 51. Second dust suppression water pipe; 52. Second dust suppression nozzle. a1, frame arch; a2, upper roll; a3, lower roll; a4, billet outlet; a5, upper roll cooling water pipe; b, billet. DETAILED DESCRIPTION

[0042] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0044] It will be understood that spatial relational terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be understood that in addition to the orientations shown in the figures, spatial relational terms also include different orientations of the device in use and operation. For example, if the device in the drawings is turned over, the element or feature described as "under" or "beneath" or "beneath" the other elements will be oriented as "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include alternative orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0045] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediate element. In the following embodiments, "connection" should be understood as "electrical connection", "communication connection", etc., if the connected circuits, modules, units, etc. can transmit electrical signals or data to each other.

[0046] When used herein, the singular forms "a", "an", and "the" may also include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

[0047] Reference Figures 1 to 3 The utility model proposes a guide structure, including a shell 1, at least two guides 2 and a dust collecting pipe 3. The shell 1 is located on one side of the frame archway a1 and is provided with a through slot 11 extending in the transverse direction; the two guides 2 are divided into a first guide 21 and a second guide 22. One end of the first guide 21 is rotatably connected to the upper groove wall of the through slot 11, and the other end is turned upside down and arranged toward the billet outlet a4. The first guide 21 and the through slot 11 enclose a dust holding chamber 211. The dust holding chamber A through hole 212 is provided on the lower cavity wall of the cavity 211, and the second guide member 22 extends horizontally, is installed in the through groove 11, and is located on the lower side of the first guide member 21; the dust collecting duct 3 is connected to the dust holding cavity 211; wherein, the two guide members 2 include two protrusions 23 facing the billet outlet a4 and protruding from the notch of the through groove 11, and a guide gap 231 for the billet to pass through is formed between the two protrusions 23, and the protrusion 23 of the second guide member 22 is penetrated by an air outlet 221.

[0048] The shell 1 is located on one side of the frame arch a1. The ends of the protrusions 23 of the two guide members 2 are both located at the billet outlet a4. During the operation of the rolling mill, the upper roller a2 and the lower roller a3 deform the red steel plate, generating smoke that rushes out from the billet outlet a4 along the rolling direction. The smoke from the red steel plate directly enters the guide gap 231. The lower hot smoke from the red steel plate enters the guide gap 231 through the air outlet 221 and merges with the upper smoke. Together, they pass through the through hole 212 and enter the dust chamber 211, and are then discharged from the dust collecting pipe 3. The shell 1, the two guide members 2, the upper roller a2 and the frame arch a1 form a smoke collection hood that is closed at the top, semi-open at the bottom and laterally open. Therefore, dust can be collected at the source of smoke while ensuring the guiding function. The required dust collection air volume is only one-fourth of the conventional required air volume, which greatly reduces the dust collection air volume, avoids smoke diffusion, and does not need to cover the entire rolling mill equipment, which is beneficial to equipment maintenance and extends service life.

[0049] Specifically, in this embodiment, continue to refer to Figures 1 to 3 The notch of the through slot 11 is divided into a first notch 111 away from the billet outlet a4 and a second notch 112 close to the billet outlet a4. The first guide member 21 includes a first guide plate 213, a first baffle 214, and a second baffle 215. The first guide plate 213 includes a first end 2131 and a second end 2132 that are laterally distributed. The first end 2131 is rotatably connected to the upper slot wall of the through slot 11, and the second end 2132 is flipped upside down and protrudes from the notch of the through slot 11. The first baffle 214 is used to block the gap between the first end 2131 and the upper side of the first notch 111. The second baffle 215 is used to block the gap between the second end 2132 and the upper side of the second notch 112. The first guide plate 213, the first baffle 214, the second baffle 215, and the housing 1 together enclose the dust chamber 211. The structure is simple and easy to set up.

[0050] At the same time, the protrusion 23 is arranged on the first guide plate 213 and includes the second end 2132; the through hole 212 is arranged on the protrusion 23, so that the through hole 212 is closer to the steel billet outlet a4, so that the flue gas can more easily and quickly pass through the through hole 212 into the dust holding chamber 211, thereby improving the dust collection efficiency.

[0051] Further, refer to Figures 2 to 4The upper sides of the first slot 111 and the second slot 112 are respectively connected with the first connecting plate 113 and the second connecting plate 114 extending in the up and down directions; the first baffle 214 and the second baffle 215 are respectively in contact with the first connecting plate 113 and the second connecting plate 114 facing the side of the through slot 11, so that during the rotation of the first guide member 21, the first baffle 214 and the first connecting plate 113 are tightly pressed against the side of the through slot 11, and the second baffle 215 and the second connecting plate 114 are tightly pressed against the side of the through slot 11, thereby ensuring sealing performance.

[0052] It should be noted that the present invention does not limit the structure of the first baffle 214 and the second baffle 215, as long as they can seal the gaps between the first end 2131 and the second end 2132 and the first connecting plate 113 and the second connecting plate 114 respectively. Specifically, in this embodiment, referring to Figure 1 、 Figure 3 and Figure 4 The first baffle 214 extends vertically, with its lower end connected to the first end 2131 to abut against the side of the first connecting plate 113 facing the through slot 11. The second baffle 215 includes a shielding portion 2151, a connecting portion 2152, and two overlapping portions 2153. The shielding portion 2151 extends horizontally and is located above the protruding portion 23 of the first guide plate 213. The connecting portion 2152 extends vertically, with its upper end connected to the end of the shielding portion 2151 facing away from the through slot 11. The two overlapping portions 2153 are respectively connected to the end of the shielding portion 2151 facing away from the connecting portion 2152 and the lower end of the connecting portion 2152, and overlap the side of the second connecting plate 114 facing the through slot 11 and the upper side of the first guide plate 213.

[0053] In this embodiment, the two overlapping portions 2153 are respectively overlapped with the side surface of the second connecting plate 114 facing the through groove 11 and the upper end surface of the first guide plate 213, so that the airtightness of the dust holding chamber 211 is not affected when the first guide plate 213 rotates.

[0054] It should be noted that the first baffle 214 and the overlapping portion 2153 overlapping the first connecting plate 113 are both configured as thin metal plates. Sealing material can be filled between the first baffle 214 and the first connecting plate 113, and between the two overlapping portions 2153 and the first connecting plate 113 and the first guide plate 213, respectively, to improve sealing performance.

[0055] More specifically, in this embodiment, referring to Figure 1 、 Figure 3 and Figure 4 A receiving cavity 2154 is formed between the shielding portion 2151 and the connecting portion 2152; the dust receiving cavity 211 includes the receiving cavity 2154; a plurality of through holes 212 are provided, and the plurality of through holes 212 are spaced apart in the longitudinal direction; the guide structure further includes a first dust suppression structure 4 provided in the receiving cavity 2154, the first dust suppression structure 4 including a first dust suppression water pipe 41 extending in the longitudinal direction and a plurality of first dust suppression nozzles 42 spaced apart in the longitudinal direction on the first dust suppression water pipe 41, the plurality of first dust suppression nozzles 42 correspondingly facing the plurality of through holes 212. Thus, when the smoke passes through the plurality of through holes 212, the plurality of first dust suppression nozzles 42 spray water in a one-to-one manner toward the plurality of through holes 212, thereby reducing the smoke concentration in the receiving cavity 2154 and preventing the smoke from escaping from the gaps between the two overlapping portions 2153 and the first connecting plate 113 and the first guide plate 213, respectively.

[0056] In this embodiment, referring to Figure 3 and Figure 4 The first guide member 21 further includes two side plates 216. The two side plates 216 extend in the transverse direction and are respectively connected to the two longitudinal sides of the first guide member 21. The two ends of the two side plates 216 are respectively connected to the first baffle plate 214 and the second baffle plate 215. This improves the stability of the first guide plate 213 and can seal at least part of the two longitudinal sides of the dust chamber 211.

[0057] To prevent smoke from escaping downward, multiple air outlets 221 are provided, spaced longitudinally. The guide structure also includes a second dust suppression structure 5 located below the second guide member 22. The second dust suppression structure 5 includes a second dust suppression water pipe 51 extending longitudinally and multiple second dust suppression nozzles 52 spaced longitudinally on the second dust suppression water pipe 51. The multiple second dust suppression nozzles 52 are directed toward the multiple air outlets 221 in a one-to-one correspondence. This reduces the concentration of hot smoke beneath the red steel plate and prevents smoke from escaping through the air outlets 221.

[0058] It should be noted that, in this embodiment, the plurality of air outlets 221 may also be arranged in a matrix. The through hole extends into the through groove in a transverse direction.

[0059] In addition, a cooling water pipe for the upper roller a2 is also installed on the second mounting plate. The guide structure also includes a first water supply pipe and a second water supply pipe, which are connected to the first dust suppression water pipe 41 and the second dust suppression water pipe 51 respectively.

[0060] The present invention also proposes a rolling mill, including the guide structure. The guide structure is as described above. The rolling mill includes all the technical features of the guide structure, which will not be described in detail here.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A guide structure, characterized in that: include: The shell is located on one side of the frame archway and is provided with a through slot extending in the transverse direction; At least two guide members, the two guide members are divided into a first guide member and a second guide member, one end of the first guide member is rotatably connected to the upper groove wall of the through groove, and the other end is flipped upside down and arranged to face the billet outlet, the first guide member and the shell enclose a dust holding chamber, the lower cavity wall of the dust holding chamber is provided with a through hole, the second guide member extends horizontally and is installed in the through groove and is located on the lower side of the first guide member; and a dust collecting duct, connected to the dust holding chamber; The two guide members include two protrusions facing the billet outlet and protruding from the slot of the through slot, a guide gap for the billet to pass through is formed between the two protrusions, and the protrusion of the second guide member is provided with an air outlet.

2. The guide structure according to claim 1, characterized in that: The notch of the through groove is divided into a first notch away from the blank outlet and a second notch close to the blank outlet; The first guide member comprises: A first guide plate includes a first end and a second end that are laterally distributed, wherein the first end is rotatably connected to the upper groove wall of the through groove, and the second end is vertically flipped and protrudes from the second groove; a first baffle, configured to block a gap between the first end and an upper side of the first notch; and a second baffle, for covering a gap between the second end and an upper side of the second notch; Wherein, the first guide plate, the first baffle plate, the second baffle plate and the shell together enclose the dust holding chamber; The protrusion is provided on the first guide plate and includes the second end; The through hole is provided in the protruding portion.

3. The guide structure according to claim 2, characterized in that: The upper sides of the first notch and the second notch are respectively connected with a first connecting plate and a second connecting plate extending in the up-down direction; The first baffle and the second baffle are respectively in contact with the side surfaces of the first connecting plate and the second connecting plate facing the through slot.

4. The guide structure according to claim 3, characterized in that: The second baffle comprises: a shielding portion extending horizontally and located above the protruding portion of the first guide plate; a connecting portion extending in an up-down direction, wherein an upper end of the connecting portion is connected to an end of the shielding portion away from the through slot; and The two overlapping portions are respectively connected to the end of the shielding portion away from the connecting portion and the lower end of the connecting portion, and are respectively overlapped with the side of the second connecting plate facing the through groove and the upper side of the first guide plate.

5. The guide structure according to claim 4, characterized in that: An accommodating cavity is formed between the shielding portion and the connecting portion; The dust holding chamber includes the accommodating chamber; The through holes are provided in a plurality, and the plurality of through holes are distributed at intervals along the longitudinal direction; The guide structure also includes a first dust suppression structure arranged in the accommodating cavity, the first dust suppression structure includes a first dust suppression water pipe extending longitudinally and a plurality of first dust suppression nozzles arranged in the first dust suppression water pipe at intervals along the longitudinal direction, and the plurality of first dust suppression nozzles correspond one to one to the plurality of through holes.

6. The guide structure according to claim 4, characterized in that: The first guide member further includes two side plates, both of which extend in the transverse direction and are respectively connected to the two longitudinal sides of the first guide member, and both ends of the two side plates are respectively connected to the first baffle and the second baffle.

7. The guide structure according to claim 1, characterized in that: The air outlet is provided in a plurality, and the plurality of air outlets are distributed at intervals along the longitudinal direction; The guide structure also includes a second dust suppression structure located on the lower side of the second guide member, the second dust suppression structure includes a second dust suppression water pipe extending longitudinally and a plurality of second dust suppression nozzles arranged at intervals along the longitudinal direction on the second dust suppression water pipe, and the plurality of second dust suppression nozzles correspond one to one to the plurality of air outlets.

8. A rolling mill, characterized in that: Comprising the guide structure according to any one of claims 1-7.

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