Openable smoke sealing cover plate

Abstract

The utility model discloses an openable smoke dust sealing cover plate, and belongs to the technical field of metal smelting, the openable smoke dust sealing cover plate comprises a main body cover plate and an auxiliary cover plate which are used for sealing the top of a metal slag ditch, the auxiliary cover plate is used for being spliced with the main body cover plate, a joint of the main body cover plate and the auxiliary cover plate at the splicing position is a bending joint, and the main body cover plate and the auxiliary cover plate are sealed at the joint; when the metal slag channel is closed, the main body cover plates and the auxiliary cover plates are arranged in a staggered mode in the arrangement direction of the metal slag channel, and when the metal slag channel needs to be opened, the auxiliary cover plates can be separated from the main body cover plates so that the intervals between the adjacent main body cover plates can be exposed. An existing cover plate structure can be optimized, ditch checking and ditch cleaning operation can be facilitated, a certain smoke dust sealing effect can be kept, the purposes of environmental protection and safe tapping are finally achieved, and meanwhile in the slag iron ditch maintenance work, the hoisting workload can be remarkably reduced, and the hoisting efficiency can be improved.

Description

Technical Field

[0001] The present application belongs to the technical field of metal smelting, and in particular relates to an openable smoke and dust sealing cover. Background Art

[0002] In the metal smelting industry, a large amount of smoke and dust is generated during the flow of metal slag, which harms the production site environment and the health of front-line workers, and also causes environmental pollution. For example, in the slag flow process of blast furnace iron production, in order to achieve the requirements of clean, safe and environmentally friendly production, measures are currently taken to install covers on the slag ditch in the iron-making field to seal off the smoke and dust.

[0003] After the cover is closed, it is necessary to check and clean the ditch, which is a common task in the steel and iron industry. It mainly refers to the operation of steel production equipment to remove dust, slag and other debris from the equipment. The existing method of setting up peepholes cannot meet the operation requirements. The cover must be hoisted and removed for the ditch inspection and cleaning operation, but hoisting and removing the cover will cause more serious dust spillage pollution, and the hoisting process increases the workload of the operators.

[0004] There is no cover with comprehensive functions at present, which cannot meet the needs of ditch inspection and ditch cleaning operations and seal smoke and dust. At present, there is no better cover that can solve this problem. Utility Model Content

[0005] The present application aims to at least to some extent solve the technical problems of balancing ditch inspection, ditch cleaning operations and smoke sealing. To this end, the present application provides an openable smoke sealing cover that can optimize the existing cover structure, which can facilitate ditch inspection and ditch cleaning operations while maintaining a certain smoke sealing effect, ultimately achieving the purpose of environmental protection and safe iron tapping. At the same time, in the work of maintaining the slag ditch, it can significantly reduce the workload of lifting and improve the lifting efficiency.

[0006] An embodiment of the present application provides an openable smoke and dust sealing cover plate, which includes: a main cover plate and an auxiliary cover plate for closing the top of a metal slag ditch, the auxiliary cover plate is used to be spliced ​​with the main cover plate, the seam between the main cover plate and the auxiliary cover plate at the splicing point is a bent seam, and the main cover plate and the auxiliary cover plate are fitted together at the seam; when closing the metal slag ditch, 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 gap between adjacent main cover plates.

[0007] In an optional embodiment, when closing the metal slag ditch, the length direction of the main cover plate and the auxiliary cover plate is consistent with the arrangement direction of the metal slag ditch. In the length direction, the spacing between the two ends of the top of the main cover plate is smaller than the spacing between the two ends of the bottom, and the spacing between the two ends of the top of the auxiliary cover plate is larger than the spacing between the two ends of the bottom.

[0008] In an optional embodiment, in the length direction, the length of the main cover plate is greater than the length of the auxiliary cover plate.

[0009] In an optional embodiment, the main cover plate and the auxiliary cover plate form a plurality of contact surfaces that are opposite to each other at the joint, and at least one pair of the contact surfaces is filled with a sealant to block smoke and dust from entering from one side of the bending seam.

[0010] In an alternative embodiment, the sealing member is a layer structure filled with a flexible refractory material.

[0011] In an optional embodiment, the contact surface includes at least three sections, the bending angle between adjacent sections is greater than or equal to a right angle, and the sealing member fills a section in the middle.

[0012] In an optional embodiment, a casting piece is further included, and a cavity is provided inside the main cover plate and / or the auxiliary cover plate, and the casting piece is filled in the cavity.

[0013] In an optional embodiment, it also includes reinforcing ribs, which are arranged in the cavity and divide the cavity into a plurality of chambers.

[0014] In an optional embodiment, the casting includes a first casting and a second casting. The first casting fills the middle of the cavity along the length direction, and the second casting fills both sides of the middle of the cavity along the length direction. The first casting is a structural member formed of a casting material that can withstand more than 800°C, and the second casting is a cast-molded structural member.

[0015] In an optional 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.

[0016] It can be seen from the above technical solution that the beneficial effects of this application are:

[0017] The present application divides the cover plate into a main cover plate and an auxiliary cover plate and arranges them in a staggered manner. The main cover plate and the auxiliary cover plate together seal the top of the metal slag ditch. The joints of the main cover plate and the auxiliary cover plate adopt a bent seam, which significantly increases the resistance to the upward and downward flow at the joints, thereby enhancing the sealing effect on smoke and dust, and solves the problem of a large amount of smoke and dust overflowing from the joints using a splicing structure. A separable structure can be formed between the main cover plate and the auxiliary cover plate. When the metal slag ditch needs to be opened, only the auxiliary cover plate needs to be moved away. The metal slag ditch is in an open state, and the main cover plate still seals the metal slag ditch. The slag ditch is closed, which can maintain the sealing effect to a certain extent and reduce the amount of smoke and dust overflow. By transferring the thickness of the auxiliary cover plate, the metal slag ditch can be exposed, and operations can be carried out directly, thus solving the problem of ditch inspection and ditch cleaning operations. Therefore, the present application takes into account ditch inspection, ditch cleaning operations and smoke sealing, and optimizes the existing cover plate structure, which can facilitate ditch inspection and ditch cleaning operations and maintain a certain smoke sealing effect, ultimately achieving the purpose of environmental protection and safe iron tapping. At the same time, in the work of maintaining the slag iron ditch, the lifting workload can be significantly reduced and the lifting efficiency can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other embodiments and drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram of an embodiment of the openable smoke and dust sealing cover plate of the utility model is shown;

[0020] Figure 2 A schematic diagram showing the splicing of the main cover plate and the auxiliary cover plate of the utility model;

[0021] Figure 3 A schematic diagram showing the splicing of the main cover plate and the auxiliary cover plate of the utility model;

[0022] Figure 4 The utility model is shown Figure 2 Enlarged schematic diagram of the dotted line;

[0023] Figure numerals: 100, smoke sealing cover plate; 101, joint; 102, cavity; 110, main cover plate; 120, auxiliary cover plate; 130, sealing member; 140, reinforcing rib; 150, casting member; 151, first casting member; 152, second casting member. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0028] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0029] Please refer to Figure 1 and Figure 2In an embodiment of the present application, an openable smoke and dust sealing cover is provided, which is applied to a variety of metal slag ditches. The blast furnace ironmaking field is now taken as an example for explanation. The metal slag ditch is a slag iron ditch. The smoke and dust sealing cover 100 includes: a main cover 110 and an auxiliary cover 120 for closing the top of the metal slag ditch. The auxiliary cover 120 is used to splice with the main cover 110. When splicing, the main cover 110 and the auxiliary cover 120 are flush with each other. The joint 101 between the main cover 110 and the auxiliary cover 120 at the joint is a bent seam. For example, the end of the main cover 110 and the end of the auxiliary cover 120 are both set to a wave form, a multi-step form, etc., and the main cover 110 and the auxiliary cover 120 are matched at the end. The main cover 110 and the auxiliary cover 120 fit together at the joint 101, such as the main cover 110 and the auxiliary cover The ends of 120 are completely matched in shape at the joints, the joints 101 are small, and they can fit tightly against each other on the contact surfaces at the joints, which also improves the sealing effect at the joints 101; when closing the metal slag ditch, the main cover plate 110 and the auxiliary cover plate 120 are staggered along the arrangement direction of the metal slag ditch. The main cover plate 110 and the auxiliary cover plate 120 are used to close the metal slag ditch. The two are staggered and spliced ​​in sequence to form multiple sections. When the metal slag ditch needs to be opened, such as for ditch inspection and ditch cleaning operations, the auxiliary cover plate 120 can be separated from the main cover plate 110. Since the auxiliary cover plate 120 and the main cover plate 110 are only spliced ​​at the ends, the two are not fixedly connected, so the auxiliary cover plate 120 can be separated from the main cover plate 110 by hoisting to expose the gap between adjacent main cover plates 110, and slag inspection and slag cleaning operations are carried out through the gap.

[0030] The prior art does not have a cover that can be used for both ditch inspection, ditch cleaning operations and smoke and dust sealing. This is because if the cover is an integral one-piece molded part, it has a better smoke and dust sealing effect, but it cannot be used for ditch inspection and ditch cleaning operations on metal slag ditches. This is because the entire cover needs to be lifted to expose the metal slag ditch, and the large exposed area will cause a large amount of smoke and dust to overflow; if the cover is designed to have more splicing structures, it is convenient to remove one or some of them for ditch inspection and ditch cleaning operations, but it does not have a better smoke and dust sealing effect. This is because more splicing or overlapping will cause more gaps in the splicing seams 101, which will cause smoke and dust to easily overflow from the gaps, resulting in poor sealing effect. The present application divides the cover plate into a main cover plate 110 and an auxiliary cover plate 120 and arranges them in a staggered manner. The main cover plate 110 and the auxiliary cover plate 120 together seal the top of the metal slag ditch. The main cover plate 110 and the auxiliary cover plate 120 are spliced ​​at a bent seam, which significantly increases the resistance to the upward and downward flow at the joint 101, thereby enhancing the sealing effect on smoke and dust, and solves the problem of a large amount of smoke and dust overflowing from the joint 101 using a spliced ​​structure. A separable structure can be formed between the main cover plate 110 and the auxiliary cover plate 120. When the metal slag ditch needs to be opened, such as for ditch inspection and ditch cleaning operations, only the auxiliary cover plate 120 needs to be moved away, and the metal slag ditch can be opened. The metal slag ditch is in an open state, and the main cover plate 110 still seals the metal slag ditch, which can maintain the sealing effect to a certain extent and reduce the amount of smoke and dust overflow. The transfer sub-cover plate 120 is thick, which can reveal the metal slag ditch and can be operated directly, thereby solving the problem of ditch inspection and ditch cleaning operations. Therefore, the present application takes into account ditch inspection, ditch cleaning operations and sealing smoke and dust, optimizes the existing cover plate structure, can facilitate ditch inspection and ditch cleaning operations, and can maintain a certain sealing effect on smoke and dust, ultimately achieving 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 workload of hoisting and improve the hoisting efficiency.

[0031] Please refer to Figure 3 In an optional embodiment, when the metal slag ditch is closed, the length direction of the main cover plate 110 and the auxiliary cover plate 120 is consistent with the arrangement direction of the metal slag ditch, such as the left and right direction in the figure. In the length direction, the spacing between the two ends of the top of the main cover plate 110 is smaller than the spacing between the two ends of the bottom, and the spacing between the two ends of the top of the auxiliary cover plate 120 is larger than the spacing between the two ends of the bottom. When checking and cleaning slag, it is necessary to hoist and transfer the auxiliary cover plate 120. The auxiliary cover plate 120 forms a structure that is wide at the top and narrow at the bottom. Then, the auxiliary cover plate 120 can be smoothly hoisted from the side of the main cover plate 110 without affecting the main cover plate 110; since the auxiliary cover plate 120 and the main cover plate 110 are staggered and spliced, the main cover plate 110 forms a structure that is narrow at the top and wide at the bottom. The above design can be combined with the design of the bending seam, which is more clever. For example, the main cover plate 110 and the auxiliary cover plate 120 are designed as a three-step structure at the end.

[0032] In an optional embodiment, in the length direction, the length of the main cover plate 110 is greater than that of the auxiliary cover plate 120. To improve the application effect, the length of the main cover plate 110 can be designed to be significantly greater than that of the auxiliary cover plate 120, as long as the ditch checking and ditch clearing operations can be carried out normally, such as the length of the auxiliary cover plate 120 is half 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; in addition, the longer the length of the main cover plate 110, the fewer the auxiliary cover plates 120 at the same distance, which can reduce the number of times the auxiliary cover plate 120 is hoisted, and also reduce the lifting workload of transferring the auxiliary cover plate 120.

[0033] In an optional embodiment, the main cover plate 110 has an inverted T-shaped longitudinal section in the length direction, and the auxiliary cover plate 120 has a T-shaped longitudinal section in the length direction. In this way, the main cover plate 110 and the auxiliary cover plate 120 can be staggered and interlocked in a T-shape at the joint in the arrangement direction of the metal slag ditch. Since the auxiliary cover plate 120 is T-shaped, it can be smoothly lifted away from the main cover plate 110 without affecting the main cover plate 110. The main cover plate 110 always keeps the metal slag ditch closed, and still has a certain effect of sealing smoke and dust during ditch inspection and ditch cleaning operations.

[0034] Please refer to Figure 4 In an optional embodiment, a seal 130 is further included. The main cover plate 110 and the auxiliary cover plate 120 form a plurality of contact surfaces at the joint 101 that are opposite to each other. The contact surface refers to the opposite surfaces of the main cover plate 110 and the auxiliary cover plate 120 at the end docking position. Since the joint 101 is a bending seam, two pairs of contact surfaces are formed by bending once. At least one pair of contact surfaces is filled with a seal 130 to block smoke and dust entering from one side of the bending seam. The seal 130 can be used to seal the main cover plate 110 and the auxiliary cover plate 120 at the joint, thereby effectively suppressing the overflow of smoke and dust during the iron-making process. In an optional embodiment, the bending seam is bent at two places, that is, the contact surface is divided into three sections, which are divided into a horizontal section in the middle and vertical sections at both ends, and the seal 130 is filled in the horizontal section in the middle. In an optional embodiment, the seal 130 is a layer structure filled with flexible refractory materials. First, the seal 130 is made of refractory materials. Secondly, the refractory materials must be flexible. In this way, the seal 130 can form an effective seal on the contact surface at the joint 101, and tightly seal the smoke and dust below the main cover plate 110 and the auxiliary cover plate 120 at the joint. The seal 130 can be made of asbestos cloth, fiber felt, ceramic fiber cloth, or other flexible refractory materials. The use of the seal 130 also facilitates the splicing, lifting and maintenance of the main cover plate 110 and the auxiliary cover plate 120.

[0035] In an optional embodiment, the above-mentioned contact surface includes at least three sections, and the bending angle between adjacent sections is greater than or equal to a right angle. For example, if the ends of the main cover plate 110 and the auxiliary cover plate 120 adopt a two-stage step structure, they are bent twice, and the bending angle is a right angle. When the angle between the contact surfaces of adjacent sections is set as above, smoke and dust will encounter greater resistance when passing through, which can significantly improve the sealing effect of the main cover plate 110 and the auxiliary cover plate 120. The seal 130 is filled in a section in the middle position; for implementation effect and economic considerations, the seal 130 is filled only in the contact surface of the middle section, or all of the multiple contact surfaces can be filled, but at least one section in the middle position must be filled, which has a stronger sealing effect.

[0036] In an optional embodiment, a casting piece 150 is also included. A cavity 102 is provided inside the main cover plate 110 and / or the auxiliary cover plate 120. The casting piece 150 is filled in the cavity 102. The casting piece 150 is cast and formed by casting material. The casting piece 150 fills the cavity 102. In an optional embodiment, a reinforcing rib 140 is also included. The reinforcing rib 140 is provided in the cavity 102. The reinforcing rib 140 divides the cavity 102 into a plurality of chambers. For example, the crisscross reinforcing ribs 140 in the figure form a grid shape. The chamber is a single grid-shaped space. The edge of the reinforcing rib 140 is connected to the bottom and end of the main cover plate 110. In order to ensure the safe passage of mechanical vehicles related to the iron-making yard, the main cover plate 110 and the auxiliary cover plate 120 have reinforcing ribs 140 at the bottom and the edge of the cavity 102 corresponding to the joint, so as to increase the strength of the main cover plate 110 and the auxiliary cover plate 120.

[0037] In an optional embodiment, the casting 150 includes a first casting 151 and a second casting 152. The first casting 151 is filled in the middle of the cavity 102 along the length direction, and its width is 600 mm. The second casting 152 is filled in both sides of the middle of the cavity 102 along the length direction, and its width is also 600 mm, as marked in the figure; the first casting 151 is a structural member formed by a casting material that can withstand more than 800°C, such as a molded member formed in the cavity 102 by casting with high-alumina refractory castables or silicon refractory castables, and the second casting 152 is a cast-molded structural member, which is a block structure formed by casting with ordinary casting materials, such as ordinary concrete molded members; the first casting 151 is adopted because along the metal slag ditch, the middle strip part in the length direction of the smoke sealing cover plate 100 is always subjected to a higher temperature. The use of high-temperature resistant materials can increase the service life of the smoke sealing cover plate 100.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", "optional example" or "optional implementation" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0039] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0040] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An openable smoke and dust sealing cover, characterized in that: The invention comprises: a main cover plate (110) and an auxiliary cover plate (120) for closing the top of a metal slag ditch; the auxiliary cover plate (120) is used to be spliced ​​with the main cover plate (110); the joint (101) between the main cover plate (110) and the auxiliary cover plate (120) is a bent joint; the main cover plate (110) and the auxiliary cover plate (120) are in contact with each other at the joint (101); when closing the metal slag ditch, the main cover plate (110) and the auxiliary cover plate (120) are arranged in a staggered manner along the arrangement direction of the metal slag ditch; when the metal slag ditch needs to be opened, the auxiliary cover plate (120) can be separated from the main cover plate (110) to expose the interval between adjacent main cover plates (110).

2. The openable smoke and dust sealing cover according to claim 1, characterized in that: When closing the metal slag ditch, the length directions of the main cover plate (110) and the auxiliary cover plate (120) are consistent with the arrangement direction of the metal slag ditch. In the length direction, the spacing between the top ends of the main cover plate (110) is smaller than the spacing between the bottom ends, and the spacing between the top ends of the auxiliary cover plate (120) is larger than the spacing between the bottom ends.

3. The openable smoke and dust sealing cover plate according to claim 2, characterized in that: In the length direction, the length of the main cover plate (110) is greater than the length of the auxiliary cover plate (120).

4. The openable smoke and dust sealing cover plate according to claim 1, characterized in that: The main cover plate (110) and the auxiliary cover plate (120) form a plurality of contact surfaces that are opposite to each other at the joint (101), and at least one pair of the contact surfaces is filled with a sealing member (130) to block smoke and dust that enters from one side of the bending seam.

5. The openable smoke and dust sealing cover plate according to claim 4, characterized in that: The sealing member (130) is a layer structure filled with flexible refractory materials.

6. The openable smoke and dust sealing cover plate according to claim 4, characterized in that: The contact surface comprises at least three sections, the bending angle between adjacent sections is greater than or equal to a right angle, and the sealing member (130) fills a section in the middle.

7. The openable smoke and dust sealing cover according to claim 1, characterized in that: It also comprises a casting (150), a cavity (102) is provided inside the main cover plate (110) and / or the auxiliary cover plate (120), and the casting (150) is filled in the cavity (102).

8. The openable smoke and dust sealing cover plate according to claim 7, characterized in that: It also includes a reinforcing rib (140), wherein the reinforcing rib (140) is disposed in the cavity (102), and the reinforcing rib (140) divides the cavity (102) into a plurality of chambers.

9. The openable smoke and dust sealing cover plate according to claim 7, characterized in that: The casting (150) comprises a first casting (151) and a second casting (152); the first casting (151) is filled in the middle of the cavity (102) along the length direction; the second casting (152) is filled in both sides of the middle of the cavity (102) along the length direction; the first casting (151) is a structural member formed by a casting material with a resistance to temperatures above 800°C; and the second casting (152) is a cast-molded structural member.

10. The openable smoke and dust sealing cover according to any one of claims 1 to 9, characterized in that: The main cover plate (110) has an inverted T-shaped longitudinal section in the length direction, and the auxiliary cover plate (120) has a T-shaped longitudinal section in the length direction.

Images