Height marking and adjusting device for furnace nose of annealing furnace

Abstract

The utility model belongs to the field of metallurgical processing equipment. The utility model provides a furnace nose height marking device for an annealing furnace. The furnace nose height marking device comprises a scale and an indicator, the installation height of the scaleplate is kept fixed, and the scaleplate is provided with scales and is installed on a fixing support of the furnace nose when used. The indicator comprises an installation section and an indication section which are fixedly connected, the installation section is perpendicular to the indication section, the installation section is installed on a lifting support which ascends and descends synchronously with the furnace nose during use, the indication section is provided with a near end connected with the installation section and a far end extending away from the installation section, and the width of the indication section is gradually reduced in the direction extending from the near end to the far end. The length of the indicating section is set to enable at least one part of the far end to be overlapped with the scales of the ruler when the indicator is used. According to the device, the mode that the height of the liftable furnace nose is judged according to experience is changed, and visualization and accuracy of height data of the liftable furnace nose are achieved.

Description

Technical Field

[0001] The utility model relates to the field of metallurgical processing equipment, in particular to a height marking and adjusting device for a nose of an annealing furnace. Background Art

[0002] The nose of the continuous hot-dip galvanizing / galvanizing / galvanized alloy unit annealing furnace is a chute-shaped sealing structure, the head of which is made of heat-resistant stainless steel and extends into the zinc pot. The main function of the nose is to connect the continuous annealing furnace and the zinc pot to ensure that the annealed and reduced strip steel is not oxidized before entering the zinc pot, which is conducive to hot-dip galvanizing.

[0003] When the production line switches hot-dip products, the zinc pot needs to be switched accordingly. If the zinc pot needs to be switched, the furnace nose should be designed as a liftable furnace nose. When switching the zinc pot, the furnace nose can be lifted away from the zinc pot working surface. After switching the zinc pot, the height of the furnace nose should be adjusted to the appropriate position. If the positioning is wrong, it will affect the product quality. At the same time, with the application of a new type of zinc ash and zinc slag discharge furnace nose with a zinc liquid pump, in order to ensure the effect of zinc ash and zinc slag discharge, the height of the furnace nose needs to be adjusted according to the zinc liquid level, otherwise the zinc slag cannot be extracted, which will seriously affect the surface quality of the galvanized product. Therefore, there is currently more demand for the height position data of the furnace nose. In the past, the height of the furnace nose could be lifted based on the operator's experience, but this method had a large error and could not achieve accurate positioning, and hot-dip quality defects were often caused by the height deviation of the furnace nose.

[0004] Therefore, it is necessary to study a device that can accurately mark the height of the annealing furnace nose. Utility Model Content

[0005] The main purpose of the utility model is to provide an annealing furnace nose height marking device and an annealing furnace nose height adjusting device comprising the annealing furnace nose height marking device.

[0006] According to one aspect of the utility model, a device for marking the height of an annealing furnace nose is provided, comprising:

[0007] A ruler, which is provided with scales and is mounted on a fixed bracket of the furnace nose when in use;

[0008] The indicator comprises a mounting section and an indicating section which are fixedly connected, the mounting section being perpendicular to the indicating section, and when in use, the mounting section being mounted on a lifting bracket which is lifted and lowered synchronously with the furnace nose, the indicating section having a proximal end connected to the mounting section and a distal end extending away from the mounting section, the width of the indicating section gradually decreasing in a direction extending from the proximal end toward the distal end, and the length of the indicating section being set so that when the indicator is in use, at least a portion of the distal end overlaps with the scale of the ruler.

[0009] According to an embodiment of the utility model, the length of the ruler is 50 mm greater than the up and down movement stroke of the nose of the annealing furnace.

[0010] According to an embodiment of the present utility model, the unit of the scale accuracy of the ruler is "millimeter".

[0011] According to one embodiment of the utility model, the mounting section is provided with a strip hole, and the mounting section is mounted to the lifting bracket of the furnace nose by a fastener, and the length of the strip hole is greater than the diameter of the fastener so that the installation position of the indicator can be adjusted.

[0012] According to an embodiment of the present invention, the length of the indicating section is set so that when the indicator is in use, the portion of the distal end overlapping the scale of the ruler accounts for one third of the width of the ruler.

[0013] According to another aspect of the utility model, a device for adjusting the height of an annealing furnace nose is provided, comprising:

[0014] A lifting drive, wherein the output end of the lifting drive is connected to the transmission shaft;

[0015] A lifting bracket, the lifting bracket is connected to the transmission shaft and is lifted and lowered by the driving action of the lifting driver, and the lifting bracket is used to support the nose of the annealing furnace;

[0016] A fixed bracket, on which a travel limit switch is installed;

[0017] a mechanical contact, one end of which is fixedly connected to the lifting bracket and the other end of which extends to the vicinity of the limit switch;

[0018] According to the annealing furnace nose height marking device described in any one of the above embodiments, the scale is installed on the fixed bracket, and the indicator is installed on the mechanical contact.

[0019] According to an embodiment of the present utility model, the travel limit switch includes a high travel limit switch and a low travel limit switch which are arranged at two different height positions of the fixed bracket.

[0020] According to an embodiment of the present utility model, the zero position of the scale is located near the high-travel limit switch, and the maximum reading position of the scale is located near the low-travel limit switch.

[0021] According to an embodiment of the present utility model, the limit switch is an inductive proximity switch or a mechanical micro switch.

[0022] According to an embodiment of the utility model, the lifting bracket adopts a screw lifter, the lifting drive adopts a motor, and the mechanical contact is installed at the lower part of the screw of the screw lifter.

[0023] Due to the adoption of the above technical scheme, the annealing furnace nose height identification device and the annealing furnace nose height adjustment device including the annealing furnace nose height identification device according to the utility model have changed the method of judging the height of the liftable nose by experience. The height data of the liftable nose is visualized and accurate, and the height can be checked in time to see if it is correct, which is convenient for adjustment and accurate positioning; it provides height data for the production process of the liftable nose, and provides data support for the zinc pot process production with different coatings; it reduces the process adjustment time after pot transfer and production change and lifting the nose, so that the equipment can quickly and accurately reach the production state, and reduces and avoids product quality defects caused by the height deviation of the nose due to damage or displacement of the limit switch, thereby ensuring stable product quality. The device has outstanding effects, simple structure, maintenance-free, convenient and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0025] Figure 1 A schematic diagram showing a device for marking the height of an annealing furnace nose according to an embodiment of the utility model when in use;

[0026] Figure 2 A schematic diagram showing a top view and a side unfolded view of an indicator according to an embodiment of the utility model is shown;

[0027] Figure 3 A schematic diagram of an annealing furnace nose height adjustment device including an annealing furnace nose height marking device according to an embodiment of the utility model is shown;

[0028] Figure 4 A top cross-sectional view of an annealing furnace nose height adjustment device according to an embodiment of the utility model when in use is shown.

[0029] Description of Reference Numerals

[0030] 10. Scale; 20. Indicator; 22. Mounting section; 24. Indicator section; 26. Strip hole; 100. Lifting drive; 200. Lifting bracket; 300. Fixed bracket; 400. Mechanical contact; 500. Travel limit switch; 600. Fixed base; 700. Furnace nose; 800. Fastener. DETAILED DESCRIPTION

[0031] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0032] Unless otherwise defined, all technical and scientific terms used in this document have the same meaning as commonly understood by technicians in the technical field of the present invention; the terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. For example, the directions or positions indicated by terms such as "length", "width", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", and "outside" are based on the directions or positions shown in the drawings, which are only for the convenience of description and cannot be understood as limitations on the present technical solution.

[0033] The terms "including" and "having" and any variations thereof in the specification and claims of the present utility model and the above-mentioned drawings are intended to cover non-exclusive inclusions; the terms "first", "second", etc. in the specification and claims of the present utility model or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0034] In the specification and claims of the utility model and the above-mentioned drawings, when an element is referred to as being "fixed on" or "mounted on" or "disposed on" or "connected to" another element, it may be directly or indirectly located on the other element. For example, when an element is referred to as being "connected to" another element, it may be directly or indirectly connected to the other element.

[0035] In addition, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0036] One object of the utility model is to provide a height marking device for a furnace nose of an annealing furnace, so as to realize the visualization and precision of the height data of a furnace nose that can be lifted. The height marking device generally comprises a ruler whose installation height is kept fixed and an indicator that moves with the furnace nose. The ruler is provided with scales and is installed on a fixed bracket of the furnace nose (i.e., a bracket whose height does not change with the lifting of the furnace nose) when in use. The indicator comprises a fixedly connected mounting section and an indicator section, and the mounting section is perpendicular to the indicator section so that the indicator is in an "L" shape as a whole. When in use, the mounting section is installed on a lifting bracket of the furnace nose, and the lifting bracket is lifted synchronously with the lifting of the furnace nose. The indicator section has a proximal end connected to the mounting section and a distal end extending away from the mounting section, and the width of the indicator section gradually decreases in the direction extending from the proximal end toward the distal end, that is, the indicator section is wedge-shaped. The length of the indicator section is set so that at least a part of the distal end overlaps with the scale of the ruler when the indicator is in use. Since the indicator is arranged on a lifting bracket that is lifted synchronously with the furnace nose, the height position of the furnace nose can be judged by means of the height position of the indicator. Through the coordination of the indicator and the scale on the ruler, the precise height data of the furnace nose can be obtained, and the height can be checked in time to facilitate adjustment and accurate positioning; it provides height data for the production process of the liftable furnace nose, and provides data support for the zinc pot process production with different coatings; it reduces the process adjustment time after pot transfer and furnace nose lifting and lowering, so that the equipment can quickly and accurately reach the production state, reduces and avoids product quality defects caused by furnace nose height deviation caused by damage or displacement of the limit switch, and ensures stable product quality.

[0037] Figure 1 The schematic diagram of the height marking device of the annealing furnace nose according to one embodiment of the utility model when in use is shown. As shown in the figure, the height marking device includes a ruler 10 and an indicator 20.

[0038] The scale 10 is provided with scales, and is mounted on the fixing bracket 300 of the furnace nose. The scale 10 can be made of stainless steel, and the scales thereon can be laser etched on both sides.

[0039] The indicator 20 is mounted on a mechanical contact 400 of a lifting bracket 200 of the furnace nose. Figure 2 The top view (upper half) and the side unfolded schematic diagram (lower half) of an indicator 20 according to an embodiment of the utility model are shown. As shown in the figure, the indicator 20 is generally L-shaped, and has a mounting section 22 and an indicating section 24 that are fixedly connected, and the mounting section 22 is perpendicular to the indicating section 24. The mounting section 22 and the indicating section 24 are both in the shape of thin plates. The mounting section 22 can be a rectangular plate, and the indicating section 24 is a wedge-shaped plate. One end of the indicating section 24 (hereinafter referred to as the proximal end) is connected to the mounting section 22, and the other end (hereinafter referred to as the distal end) extends away from the mounting section 22. The width of the indicating section 24 (i.e. Figure 2The width direction is parallel to the plane where the wedge plate is located and perpendicular to the direction extending from the proximal end to the distal end) and gradually decreases in the direction extending from the proximal end to the distal end, and the end close to the scale 10 is set to a thinner pointer shape, so that the indicating section 24 has the required rigidity and is also convenient for accurately determining the height of the indicator 20. Back to reference Figure 1 When the device is installed and used, at least a portion of the distal end of the indicating section 24 overlaps with the scale of the ruler 10 to indicate the height at which it is located.

[0040] Optionally, in some embodiments, the length of the ruler 10 (i.e., its scale range) is set to be larger than the up and down movement stroke of the annealing furnace nose, for example, 50 mm, so as to ensure that the height of the annealing furnace nose can be determined by means of the ruler 10 and the indicator 20 within the entire travel range of the annealing furnace nose. Optionally, in some embodiments, the scale accuracy of the ruler is in "millimeter" to ensure that the height of the annealing furnace nose can be accurately adjusted relative to the zinc pot liquid level to ensure product quality.

[0041] Optionally, in some embodiments, Figure 2 As shown, the mounting section 22 is provided with a strip hole 26, and the mounting section 22 can be mounted on the lifting bracket 200 of the furnace nose through the strip hole 26 by a fastener. The length of the strip hole 26 is greater than the diameter of the fastener. After such a setting, the installation position of the indicator 20 can be adjusted so that the distal end of the indicator section 24 can be located on the side where the scale 10 can be observed.

[0042] Optionally, in some embodiments, the length of the indicating section 24 is set so that when the indicator 20 is in use, the portion where the distal end thereof overlaps with the scale of the ruler 10 accounts for one third of the width of the ruler 10. The specific size of the indicating section 24 can be determined according to the distance between the lifting bracket 200 to which it is connected and the fixed bracket 300 to which the ruler 10 is connected. In this way, the ruler will not be completely blocked, and the height data can be easily read.

[0043] Another object of the utility model is to provide an annealing furnace nose height adjustment device including the annealing furnace nose height marking device. Figure 3 A schematic diagram of an annealing furnace nose height adjustment device according to an embodiment of the utility model is shown. As shown in the figure, the annealing furnace nose height adjustment device generally includes a lifting drive 100, a lifting bracket 200, a fixed bracket 300, a mechanical contact 400 and the annealing furnace nose height marking device as described above.

[0044] The lifting drive 100 may include a motor mounted on a fixed base 600, the motor being connected to a transmission shaft and being able to drive the transmission shaft to rotate. The lifting bracket 200 uses a lifting screw. Specifically, a worm gear lifter or a gear screw lifter may be used to achieve the lifting of the furnace nose. For example, the transmission shaft may be designed as a worm, the lifting bracket 200 uses a screw, and a worm wheel is installed outside the screw. In this case, the rotation of the motor drives the worm to rotate, the worm drives the worm wheel to rotate, the worm wheel drives the screw to move up and down, and the screw drives the furnace nose 700 installed at its end to rise and fall synchronously.

[0045] The fixed bracket 300 is also fixedly mounted on the fixed base 600. A travel limit switch 500 is mounted on the fixed bracket 300 to limit the lifting and lowering range of the furnace nose 700. Specifically, the limit switch 500 may include a high travel limit switch and a low travel limit switch installed at two different height positions. The limit switch may be an inductive proximity switch or a mechanical micro-motion travel limit switch, and the switch is installed at both ends of the mounting bracket. The scale 10 is also mounted on the fixed bracket 300 of the furnace nose, and the zero position of the scale 10 may be located near the high travel limit switch, and the maximum reading position of the scale 10 is located near the low travel limit switch.

[0046] Figure 4 A top cross-sectional view of an annealing furnace nose height adjustment device according to an embodiment of the utility model when in use is shown. As shown in the figure, one end of the mechanical contact 400 used in conjunction with the travel limit switch 500 is fixedly connected to the lifting bracket 200, and the other end extends to the vicinity of the limit switch. The mechanical contact 400 can specifically be a metal protrusion that moves with the lifting action of the furnace nose 700. When the mechanical contact 400 approaches the inductive proximity switch or collides with the mechanical micro-motion travel limit switch, the limit switch 500 generates an electrical signal, thereby realizing the switching of the circuit and terminating the action of the motor and the furnace nose. The indicator 20 is installed at one end of the mechanical contact 400 close to the travel limit switch 500. For example, a mounting flange may be provided at one end of the mechanical contact 400 close to the travel limit switch 500, and the mounting section 22 is parallel to the end flange of the mechanical contact 400. The positions of the two are adjusted so that the distal end of the indicating section 24 can be located on the side where the scale 10 can be observed. After adjustment into place, the indicator 20 is fixed to the mechanical contact 400 using fasteners 800 such as screws and nuts.

[0047] When the annealing furnace nose height adjustment device is used, the lifting driver 100 is started to drive the lifting bracket 200 to lift the nose 700, and the indicator 20 moves along with the movement of the nose 700. The indicating section 24 moves to the side of the scale 10, and can accurately indicate the displacement data of the currently liftable nose 700.

[0048] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0049] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0050] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. An annealing furnace nose height marking device, characterized in that: include: A ruler, which is provided with scales and is mounted on a fixed bracket of the furnace nose when in use; The indicator comprises a mounting section and an indicating section which are fixedly connected, the mounting section being perpendicular to the indicating section, and when in use, the mounting section being mounted on a lifting bracket which is lifted and lowered synchronously with the furnace nose, the indicating section having a proximal end connected to the mounting section and a distal end extending away from the mounting section, the width of the indicating section gradually decreasing in a direction extending from the proximal end toward the distal end, and the length of the indicating section being set so that when the indicator is in use, at least a portion of the distal end overlaps with the scale of the ruler.

2. The annealing furnace nose height marking device according to claim 1 is characterized in that: The length of the scale is 50 mm greater than the up and down movement stroke of the nose of the annealing furnace.

3. The annealing furnace nose height marking device according to claim 1, characterized in that: The unit of the scale accuracy of the ruler is millimeter.

4. The annealing furnace nose height marking device according to claim 1, characterized in that: The mounting section is provided with a strip hole, and the mounting section is mounted on the lifting bracket of the furnace nose through a fastener. The length of the strip hole is greater than the diameter of the fastener so that the installation position of the indicator can be adjusted.

5. The annealing furnace nose height marking device according to claim 1, characterized in that: The length of the indicating section is set so that when the indicator is in use, the portion of the distal end overlapping the scale of the ruler accounts for one third of the width of the ruler.

6. An annealing furnace nose height adjustment device, characterized in that: include: A lifting drive, wherein the output end of the lifting drive is connected to the transmission shaft; A lifting bracket, the lifting bracket is connected to the transmission shaft and is lifted and lowered by the driving action of the lifting driver, and the lifting bracket is used to support the nose of the annealing furnace; A fixed bracket, on which a travel limit switch is installed; a mechanical contact, one end of which is fixedly connected to the lifting bracket and the other end of which extends to the vicinity of the limit switch; The annealing furnace nose height marking device according to any one of claims 1 to 5, wherein the ruler is mounted on the fixed bracket and the indicator is mounted on the mechanical contact.

7. The annealing furnace nose height adjustment device according to claim 6, characterized in that: The travel limit switch comprises a high travel limit switch and a low travel limit switch which are arranged at two different height positions of the fixing bracket.

8. The annealing furnace nose height adjustment device according to claim 7, characterized in that: The zero position of the scale is located near the high-travel limit switch, and the maximum reading position of the scale is located near the low-travel limit switch.

9. The annealing furnace nose height adjustment device according to claim 6, characterized in that: The limit switch is an inductive proximity switch or a mechanical micro switch.

10. The annealing furnace nose height adjustment device according to claim 6, characterized in that: The lifting bracket adopts a screw lifter, the lifting drive adopts a motor, and the mechanical contact is installed at the lower part of the screw of the screw lifter.

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