CN222499211U - Openable smoke and dust seal cover plate - Google Patents

Openable smoke and dust seal cover plate Download PDF

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Publication number
CN222499211U
CN222499211U CN202420971757.4U CN202420971757U CN222499211U CN 222499211 U CN222499211 U CN 222499211U CN 202420971757 U CN202420971757 U CN 202420971757U CN 222499211 U CN222499211 U CN 222499211U
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China
Prior art keywords
cover plate
main body
sealing
casting
auxiliary
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CN202420971757.4U
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Inventor
王雪玮
石存广
李文富
刘刚
贾新
王荣刚
罗德庆
林春山
冯伟
马洪修
李洋
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Beijing Shougang Co Ltd
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Beijing Shougang Co Ltd
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Priority to CN202420971757.4U priority Critical patent/CN222499211U/en
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Abstract

本申请公开了一种可开启的烟尘密封盖板,属于金属冶炼技术领域,其包括用于封闭金属渣沟渠顶部的:主体盖板和副盖板,副盖板用于与主体盖板拼接,主体盖板与副盖板在拼接处的接缝为弯折缝,主体盖板与副盖板在接缝处密封;在封闭金属渣沟渠时,主体盖板和副盖板沿金属渣沟渠的布置方向交错排布,需开启金属渣沟渠时,副盖板能够与主体盖板分离,以露出相邻主体盖板之间的间隔;本申请能够优化现有的盖板结构,既能够方便查沟、清沟作业,又能够保持一定的封闭烟尘作用,最终达到环保、安全出铁的目的,同时在维护渣铁沟工作中,能够显著减少吊装工作量,提高吊装效率。

The present application discloses an openable smoke and dust sealing cover plate, belonging to the field of metal smelting technology, which comprises: a main cover plate and an auxiliary cover plate for sealing the top of a metal slag ditch, the auxiliary cover plate is used to be spliced with the main cover plate, the joint between the main cover plate and the auxiliary cover plate at the splicing is a bent seam, and the main cover plate and the auxiliary cover plate are sealed at the joint; when the metal slag ditch is closed, the main cover plate and the auxiliary cover plate are staggered along the arrangement direction of the metal slag ditch, and when the metal slag ditch needs to be opened, the auxiliary cover plate can be separated from the main cover plate to expose the interval between adjacent main cover plates; the present application can optimize the existing cover plate structure, which can facilitate the ditch inspection and ditch cleaning operations, and can maintain a certain smoke and dust sealing effect, and finally achieve the purpose of environmental protection and safe iron tapping, and at the same time, in the work of maintaining the slag iron ditch, it can significantly reduce the lifting workload and improve the lifting efficiency.

Description

Openable smoke and dust seal cover plate
Technical Field
The application belongs to the technical field of metal smelting, and particularly relates to an openable smoke sealing cover plate.
Background
In the metal smelting industry, a large amount of smoke dust is generated in the metal slag flowing treatment process, which causes harm to the production field environment and the health of first-line workers, and also causes environmental pollution, such as blast furnace tapping in the slag-iron flowing treatment process. In order to meet the requirements of clean, safe and environment-friendly production, measures of additionally installing cover plates are adopted for the slag runner of the cast house so as to seal smoke dust.
After the cover plate is covered, the operations of checking and cleaning the ditch are required, which is a common operation in the steel and iron industry, and mainly means that the operations of checking and cleaning the ditch are required for removing sundries such as dust accumulation and slag formation of the equipment in the operation process of steel production equipment. The existing mode of setting peepholes cannot meet the operation requirements, the cover plate is lifted and removed in the operations of checking and cleaning the ditches, but the cover plate is lifted and transferred to cause serious dust overflow pollution, and the workload of operators is increased in the lifting process.
The existing cover plate with comprehensive functions cannot meet the requirements of ditch checking and cleaning operation, smoke dust is sealed, and the existing cover plate with good functions cannot solve the problem.
Disclosure of utility model
The application aims to solve the technical problems of ditch checking and cleaning operations and smoke dust sealing at least to a certain extent, and therefore, the application provides the openable smoke dust sealing cover plate which can optimize the existing cover plate structure, can facilitate the ditch checking and cleaning operations, can keep a certain effect of the sealing smoke dust, finally achieves the aims of environmental protection and safe tapping, and can obviously reduce the hoisting workload and improve the hoisting efficiency in the operation of maintaining the slag iron ditch.
The embodiment of the application provides an openable smoke sealing cover plate, which comprises a main body cover plate and an auxiliary cover plate, wherein the main body cover plate and the auxiliary cover plate are used for sealing the top of a metal slag trench, the auxiliary cover plate is used for being spliced with the main body cover plate, a seam of the main body cover plate and the auxiliary cover plate at the splicing position is a bending seam, the main body cover plate and the auxiliary cover plate are attached at the seam, when the metal slag trench is sealed, the main body cover plate and the auxiliary cover plate are arranged in a staggered manner along the arrangement direction of the metal slag trench, and when the metal slag trench needs to be opened, the auxiliary cover plate can be separated from the main body cover plate so as to expose the interval between the adjacent main body cover plates.
In an alternative embodiment, when the metal slag trench is closed, the length direction of the main body cover plate and the auxiliary cover plate is consistent with the arrangement direction of the metal slag trench, and the distance between the two ends of the top of the main body cover plate is smaller than the distance between the two ends of the bottom of the main body cover plate in the length direction, and the distance between the two ends of the top of the auxiliary cover plate is larger than the distance between the two ends of the bottom of the auxiliary cover plate.
In an alternative embodiment, the length of the main body cover plate is greater than the length of the sub cover plate in the length direction.
In an alternative embodiment, the main cover plate and the auxiliary cover plate form a plurality of sections of contact surfaces which are opposite to each other at the joint, and at least one pair of contact surfaces are filled with sealing elements so as to block smoke dust entering from one side of the bending joint.
In an alternative embodiment, the seal is a refractory filled layer structure having flexibility.
In an alternative embodiment, the contact surface comprises at least three sections, the bending angle between adjacent sections is equal to or greater than a right angle, and the sealing element is filled in one section at the middle position.
In an alternative embodiment, the device further comprises a casting part, wherein a cavity is formed in the main body cover plate and/or the auxiliary cover plate, and the casting part is filled in the cavity.
In an alternative embodiment, the device further comprises a reinforcing rib arranged in the cavity, and the reinforcing rib divides the cavity into a plurality of chambers.
In an alternative embodiment, the casting parts include a first casting part and a second casting part, the first casting part is filled in the middle of the cavity along the length direction, the second casting part is filled at two sides of the middle of the cavity along the length direction, the first casting part is a structural part formed by casting material parts resistant to more than 800 ℃, and the second casting part is a structural part formed by casting.
In an alternative embodiment, the longitudinal section of the main cover plate in the length direction is in an inverted T shape, and the longitudinal section of the auxiliary cover plate in the length direction is in a T shape.
According to the technical scheme, the beneficial effects of the application are as follows:
According to the application, the cover plate is divided into the main body cover plate and the auxiliary cover plate which are arranged in a staggered manner, the top of the metal slag ditch is sealed by the main body cover plate and the auxiliary cover plate together, and the joint of the main body cover plate and the auxiliary cover plate adopts the bending joint, so that the upward and downward flowing resistance of the joint is remarkably increased, the sealing effect on smoke dust is further enhanced, the problem that the smoke dust adopting the joint structure overflows greatly from the joint is solved, a separable structure can be formed between the main body cover plate and the auxiliary cover plate, when the metal slag ditch needs to be opened, the auxiliary cover plate is only required to be moved away, the metal slag ditch is in an opened state, the main body cover plate still seals the metal slag ditch, the sealing effect can be kept to a certain extent, the smoke dust overflow amount is reduced, and the thickness of the auxiliary cover plate is transferred, so that the metal slag ditch can be directly operated, and therefore, the problems of ditch checking, ditch cleaning operation and smoke dust sealing operation are solved, the existing cover plate structure is optimized, the ditch checking operation can be convenient, a certain sealing smoke dust effect can be kept, finally, the purposes of environmental protection and safe iron tapping are achieved, and the hoisting work efficiency can be remarkably reduced in maintaining the iron slag lifting work.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are some embodiments of the present application, and other embodiments and drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 shows a schematic representation of an embodiment of an openable soot sealing cover plate of the present utility model;
FIG. 2 shows a schematic view of a splice of an embodiment of the main body cover plate and the secondary cover plate of the present utility model;
FIG. 3 shows a schematic view of a splice of an embodiment of the main body cover plate and the secondary cover plate of the present utility model;
FIG. 4 shows an enlarged schematic view of the present utility model at the dashed line of FIG. 2;
Reference numerals 100, smoke sealing cover plate, 101, joint, 102, cavity, 110, main body cover plate, 120, auxiliary cover plate, 130, sealing element, 140, reinforcing rib, 150, casting element, 151, first casting element, 152 and second casting element.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that all the directional indicators in the embodiments of the present utility model are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture, and if the specific posture is changed, the directional indicators are correspondingly changed.
In the present utility model, unless explicitly specified and limited otherwise, the terms "connected," "fixed," and the like are to be construed broadly, and for example, "fixed" may be fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements, unless otherwise explicitly specified. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
The application is described below with reference to specific embodiments in conjunction with the accompanying drawings:
Referring to fig. 1 and 2, an embodiment of the present application provides an openable smoke sealing cover plate, which is applied to various metal slag trenches, and is illustrated in the field of blast furnace ironmaking, where the metal slag trench is a slag iron trench, and the smoke sealing cover plate 100 includes a main body cover plate 110 and an auxiliary cover plate 120 for closing the top of the metal slag trench, where the auxiliary cover plate 120 is used for splicing with the main body cover plate 110, and when the main body cover plate 110 and the auxiliary cover plate 120 are spliced, the main body cover plate 110 and the auxiliary cover plate 120 are in flush joint, and the seam 101 at the splicing position is a crease seam, for example, the end of the main body cover plate 110 and the end of the auxiliary cover plate 120 are both in a wave form, a multi-step form, and the main body cover plate 110 and the auxiliary cover plate 120 are in butt joint at the seam 101, for example, the end of the main body cover plate 110 and the auxiliary cover plate 120 are in a perfect match shape, and the seam 101 is smaller, and can be mutually clung on a contact surface at the splicing position, so that the sealing effect at the seam 101 is improved; when the metal slag trench is closed, the main body cover plate 110 and the auxiliary cover plate 120 are arranged in a staggered manner along the arrangement direction of the metal slag trench, the main body cover plate 110 and the auxiliary cover plate 120 are used for closing the metal slag trench, the main body cover plate 110 and the auxiliary cover plate 120 are sequentially spliced in a staggered manner to form multiple sections, and when the metal slag trench needs to be opened, such as trench checking and trench cleaning operation, the auxiliary cover plate 120 can be separated from the main body cover plate 110, and as the auxiliary cover plate 120 is only spliced with the main body cover plate 110 at the end part, the auxiliary cover plate 120 and the main body cover plate 110 are not fixedly connected, so that the auxiliary cover plate 120 can be separated from the main body cover plate 110 in a hoisting manner to expose the interval between the adjacent main body cover plates 110, and the slag checking and the slag cleaning operation can be performed through the interval.
The prior art does not have a cover plate with functions of checking and cleaning the ditch and sealing smoke dust, because the cover plate has better effect of sealing the smoke dust if adopting an integral forming piece, but can not check and clean the ditch of the metal slag ditch, because the whole cover plate needs to be lifted to expose the ditch of the metal slag, the lifting exposed area is large, and a large amount of smoke dust can overflow, and if the cover plate is designed into a more splicing structure, one or some of the cover plates can be conveniently detached for checking and cleaning the ditch, but the cover plate has no better effect of sealing the smoke dust, because of more splicing or lap joint, the splicing seam 101 has more gaps, so that the smoke dust is easy to overflow from the gaps, and the sealing effect is poor. According to the application, the cover plate is divided into the main body cover plate 110 and the auxiliary cover plate 120 and is arranged in a staggered manner, the top of the metal slag trench is sealed by the main body cover plate 110 and the auxiliary cover plate 120, and the joint of the main body cover plate 110 and the auxiliary cover plate 120 adopts a bending seam, so that the up-and-down flowing resistance of the joint 101 is remarkably increased, the sealing effect of smoke dust is further enhanced, the problem that the smoke dust adopting the joint structure overflows greatly from the joint 101 is solved, a separable structure can be formed between the main body cover plate 110 and the auxiliary cover plate 120, when the metal slag trench needs to be opened, if the trench is to be checked and cleaned, only the auxiliary cover plate 120 is required to be moved away, the metal slag trench is opened, the main body cover plate 110 still seals the metal slag trench, the sealing effect can be maintained to a certain extent, the overflow amount of smoke dust is reduced, and the metal slag trench is exposed, and the operation can be directly performed.
Referring to fig. 3, in an alternative embodiment, when the metal slag trench is closed, the length direction of the main body cover plate 110 and the auxiliary cover plate 120 is consistent with the arrangement direction of the metal slag trench, such as the left-right trend in the figure, the distance between the two ends of the top of the main body cover plate 110 is smaller than the distance between the two ends of the bottom in the length direction, the distance between the two ends of the top of the auxiliary cover plate 120 is larger than the distance between the two ends of the bottom, during slag searching and removing operations, the auxiliary cover plate 120 needs to be lifted and moved away, the auxiliary cover plate 120 forms a structure with a wide top and a narrow bottom, the auxiliary cover plate 120 can be lifted and moved smoothly from the side of the main body cover plate 110 without affecting the main body cover plate 110, and because the auxiliary cover plate 120 and the main body cover plate 110 are spliced in a staggered manner, the design can be combined with the design of a bending joint, such that the main body cover plate 110 and the auxiliary cover plate 120 are designed into a three-stage structure at the end.
In an alternative embodiment, in the length direction, the length of the main cover plate 110 is greater than the length of the auxiliary cover plate 120, so as to improve the application effect, the length of the main cover plate 110 may be designed to be significantly greater than the length of the auxiliary cover plate 120, so long as the operations of checking and cleaning ditches can be performed normally, for example, the length of the auxiliary cover plate 120 is half of the length of the main cover plate 110, and the shorter the length of the auxiliary cover plate 120, the better the smoke sealing effect of the smoke sealing cover plate 100 is, and in addition, the longer the length of the main cover plate 110, the fewer the number of auxiliary cover plates 120 at the same distance is, so that the lifting times of the auxiliary cover plate 120 can be reduced, and the lifting workload of transferring the auxiliary cover plate 120 is also reduced.
In an alternative embodiment, the longitudinal section of the main body cover plate 110 is in an inverted T shape in the length direction, the longitudinal section of the auxiliary cover plate 120 is in a T shape in the length direction, so that the main body cover plate 110 and the auxiliary cover plate 120 can be in a T-shaped vertical dislocation embedding at the splicing position in the arrangement direction of the metal slag trench, and the auxiliary cover plate 120 is in a T shape, so that the auxiliary cover plate 120 can be smoothly lifted away from the side of the main body cover plate 110 without affecting the main body cover plate 110, the main body cover plate 110 always keeps sealing the metal slag trench, and the effect of sealing smoke dust is still certain when the trench checking and cleaning operation is performed.
Referring to fig. 4, in an alternative embodiment, the sealing member 130 is further included, the main cover plate 110 and the auxiliary cover plate 120 form multiple sections of contact surfaces with opposite positions at the joint 101, the contact surfaces refer to opposite surfaces of the main cover plate 110 and the auxiliary cover plate 120 at the butt joint positions of the ends, as the joint 101 is a bending joint, two pairs of contact surfaces are formed when the joint is bent once, at least one pair of contact surfaces are filled with the sealing member 130 so as to block smoke dust entering from one side of the bending joint, and the sealing member 130 can seal the joint between the main cover plate 110 and the auxiliary cover plate 120, thereby effectively inhibiting the smoke dust from overflowing in the process of tapping. In an alternative embodiment, the sealing member 130 is a layer structure filled with a flexible refractory material, firstly, the sealing member 130 is a refractory material made of a refractory material, and secondly, the refractory material is flexible, so that the sealing member 130 can form an effective seal on a contact surface at the joint 101, smoke dust below the main cover plate 110 and the auxiliary cover plate 120 is tightly sealed at the joint, and the sealing member 130 can be made of asbestos cloth, fiber felt or ceramic fiber cloth, or other flexible refractory material, and the sealing member 130 is also used for facilitating the splicing and lifting maintenance of the main cover plate 110 and the auxiliary cover plate 120.
In an alternative embodiment, the contact surface includes at least three sections, the bending angle between the adjacent sections is greater than or equal to a right angle, if the ends of the main body cover plate 110 and the auxiliary cover plate 120 adopt a two-stage step structure, the bending is performed twice, the bending angle is a right angle, when the included angle between the contact surfaces of the adjacent sections is set as described above, smoke dust passes through the contact surfaces and receives larger resistance, the sealing effect of the main body cover plate 110 and the auxiliary cover plate 120 can be obviously improved, the sealing element 130 is filled in one section of the middle position, and for implementation effect and economy, the sealing element 130 is filled only in the contact surface of the middle section, and the multi-section contact surface can be filled completely, but at least one section of the middle position is required to be filled, so that the sealing effect is stronger.
In an alternative embodiment, the device further comprises a casting member 150, the cavity 102 is formed in the main body cover plate 110 and/or the auxiliary cover plate 120, the casting member 150 is filled in the cavity 102, the casting member 150 is formed by casting materials, and the casting member 150 fills the cavity 102. In an alternative embodiment, the steel bar reinforced plastic slab further comprises a reinforced plastic bar 140, the reinforced plastic bar 140 is arranged in the cavity 102, the reinforced plastic bar 140 divides the cavity 102 into a plurality of cavities, such as the reinforced plastic bars 140 criss-cross in the figure, a grid shape is formed, the cavities are grid-shaped single spaces, the edges of the reinforced plastic bar 140 are connected with the bottom and the end parts of the main cover plate 110, and in order to ensure the safe passing of the cast house related mechanical vehicles, the reinforced plastic bars 140 are arranged at the bottoms of the main cover plate 110 and the auxiliary cover plate 120 and the corresponding edge positions of the cavity 102 at the joint, so that the strength of the main cover plate 110 and the auxiliary cover plate 120 is increased.
In an alternative embodiment, the casting member 150 includes a first casting member 151 and a second casting member 152, where the first casting member 151 is filled in the middle of the cavity 102 along the length direction, the width is 600mm, the second casting member 152 is filled on two sides of the middle of the cavity 102 along the length direction, and the width is 600mm, as noted in the figure, the first casting member 151 is a structural member formed by casting materials with resistance to temperatures above 800 ℃, such as a molding member formed by casting with high-alumina refractory casting materials or siliceous refractory casting materials, and the second casting member 152 is a molding member formed by casting with common casting materials, such as a common concrete molding member, and the first casting member 151 is formed by casting with common casting materials along the metal slag trench, so that the middle strip-shaped portion of the smoke sealing cover plate 100 is always subjected to high temperature, and the service life of the smoke sealing cover plate 100 can be prolonged.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "examples," "specific examples," "alternative examples," or "alternative embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.
In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.

Claims (10)

1. The openable smoke dust sealing cover plate is characterized by comprising a main body cover plate (110) and an auxiliary cover plate (120) which are used for sealing the top of a metal slag trench, wherein the auxiliary cover plate (120) is used for being spliced with the main body cover plate (110), a joint (101) of the main body cover plate (110) and the auxiliary cover plate (120) at the splicing position is a bending joint, the main body cover plate (110) and the auxiliary cover plate (120) are attached to each other at the joint (101), when the metal slag trench is sealed, the main body cover plate (110) and the auxiliary cover plate (120) are staggered along the arrangement direction of the metal slag trench, and when the metal slag trench is required to be opened, the auxiliary cover plate (120) can be separated from the main body cover plate (110) so as to expose the interval between the adjacent main body cover plates (110).
2. The openable soot sealing cover plate according to claim 1, wherein when closing the metal slag trench, the length direction of the main body cover plate (110) and the sub cover plate (120) coincides with the arrangement direction of the metal slag trench, and the distance between the top ends of the main body cover plate (110) is smaller than the distance between the bottom ends in the length direction, and the distance between the top ends of the sub cover plate (120) is larger than the distance between the bottom ends.
3. The openable soot sealing cover plate according to claim 2, wherein the length of the main body cover plate (110) is longer than the length of the sub cover plate (120) in the length direction.
4. The openable smoke-sealing cover plate according to claim 1, wherein said main cover plate (110) and said sub-cover plate (120) form a plurality of sections of contact surfaces located opposite each other at said joint (101), at least one pair of contact surfaces being filled with a sealing member (130) to block smoke entering from one side of said bending joint.
5. The openable soot sealing cover plate of claim 4, wherein said sealing member (130) is a layer structure filled with a flexible refractory material.
6. The openable soot sealing cover plate of claim 4, wherein said contact surface comprises at least three sections, a bending angle between adjacent sections being equal to or greater than a right angle, and said sealing member (130) fills a section at an intermediate position.
7. The openable soot sealing cover plate according to claim 1, further comprising a casting (150), wherein the interior of the main body cover plate (110) and/or the sub cover plate (120) is provided with a cavity (102), and wherein the casting (150) is filled in the cavity (102).
8. The openable soot sealing cover plate of claim 7, further comprising a reinforcing rib (140), said reinforcing rib (140) being provided in said cavity (102), said reinforcing rib (140) dividing said cavity (102) into a plurality of chambers.
9. The openable soot sealing cover plate according to claim 7, wherein the casting member (150) comprises a first casting member (151) and a second casting member (152), the first casting member (151) is filled in the middle of the cavity (102) along the length direction, the second casting member (152) is filled on two sides of the middle of the cavity (102) along the length direction, the first casting member (151) is a structural member formed by casting material resistant to more than 800 ℃, and the second casting member (152) is a structural member formed by casting.
10. The openable smoke-sealing cover plate according to any one of claims 1-9, wherein said main body cover plate (110) has an inverted T-shaped longitudinal section in the longitudinal direction, and said sub-cover plate (120) has a T-shaped longitudinal section in the longitudinal direction.
CN202420971757.4U 2024-05-07 2024-05-07 Openable smoke and dust seal cover plate Active CN222499211U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202420971757.4U CN222499211U (en) 2024-05-07 2024-05-07 Openable smoke and dust seal cover plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202420971757.4U CN222499211U (en) 2024-05-07 2024-05-07 Openable smoke and dust seal cover plate

Publications (1)

Publication Number Publication Date
CN222499211U true CN222499211U (en) 2025-02-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202420971757.4U Active CN222499211U (en) 2024-05-07 2024-05-07 Openable smoke and dust seal cover plate

Country Status (1)

Country Link
CN (1) CN222499211U (en)

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