CN115435596B - Integral casting method of hot blast furnace vault, hot blast outlet and hot blast three-way junction - Google Patents
Integral casting method of hot blast furnace vault, hot blast outlet and hot blast three-way junction Download PDFInfo
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- CN115435596B CN115435596B CN202211140598.5A CN202211140598A CN115435596B CN 115435596 B CN115435596 B CN 115435596B CN 202211140598 A CN202211140598 A CN 202211140598A CN 115435596 B CN115435596 B CN 115435596B
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- 238000005266 casting Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000010276 construction Methods 0.000 claims abstract description 18
- 238000009434 installation Methods 0.000 claims abstract description 6
- 238000009415 formwork Methods 0.000 claims description 95
- 230000003014 reinforcing effect Effects 0.000 claims description 31
- 239000011449 brick Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 230000010412 perfusion Effects 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims 13
- 210000005069 ears Anatomy 0.000 claims 4
- 238000004140 cleaning Methods 0.000 abstract description 3
- 238000009411 base construction Methods 0.000 abstract 1
- 230000000149 penetrating effect Effects 0.000 description 25
- 238000003780 insertion Methods 0.000 description 16
- 230000037431 insertion Effects 0.000 description 16
- 230000006978 adaptation Effects 0.000 description 7
- 238000000227 grinding Methods 0.000 description 7
- 238000005728 strengthening Methods 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 6
- 239000003351 stiffener Substances 0.000 description 6
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000005498 polishing Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 241001631457 Cannula Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 210000004087 cornea Anatomy 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/02—Crowns; Roofs
- F27D1/025—Roofs supported around their periphery, e.g. arched roofs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/0003—Linings or walls
- F27D1/0006—Linings or walls formed from bricks or layers with a particular composition or specific characteristics
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/04—Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used
- F27D1/06—Composite bricks or blocks, e.g. panels, modules
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/16—Making or repairing linings ; Increasing the durability of linings; Breaking away linings
- F27D1/1621—Making linings by using shaped elements, e.g. bricks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/16—Making or repairing linings ; Increasing the durability of linings; Breaking away linings
- F27D1/1678—Increasing the durability of linings; Means for protecting
- F27D1/1684—Increasing the durability of linings; Means for protecting by a special coating applied to the lining
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D2001/0059—Construction elements of a furnace
- F27D2001/0063—Means to strengthen a part
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
本发明公开了一种热风炉拱顶、热风出口、热风三岔口整体浇筑方法，涉及热风炉建造技术领域，包括以下步骤：基座构建，底层模板搭建，管道构建，拱顶模板搭建，浇筑，拆模清理，管道内衬安装。本发明还公开了一种热风炉拱顶、热风出口、热风三岔口整体浇筑装置，包括支撑组件、拱顶外模板、拱顶内模板和底层模板组件。本发明通过设置支撑组件，支撑组件下方设置有底层模板组件，底层模板组件内设置有管道模板，管道模板的设置可以在浇筑过程中实现对热风出口和热风三岔口管道的预留，从而可以实现热风炉拱顶、热风出口、热风三岔口的整体浇筑。
The present invention discloses a method for integrally casting a hot blast furnace vault, a hot blast outlet, and a hot blast fork, and relates to the technical field of hot blast furnace construction, and includes the following steps: base construction, bottom template construction, pipeline construction, vault template construction, casting, demoulding and cleaning, and pipeline lining installation. The present invention also discloses a device for integrally casting a hot blast furnace vault, a hot blast outlet, and a hot blast fork, including a support assembly, an vault outer template, an vault inner template, and a bottom template assembly. The present invention sets a support assembly, a bottom template assembly is set below the support assembly, and a pipeline template is set in the bottom template assembly. The setting of the pipeline template can realize the reservation of the hot blast outlet and the hot blast fork pipeline during the casting process, so that the integral casting of the hot blast furnace vault, the hot blast outlet, and the hot blast fork can be realized.
Description
Technical Field
The invention relates to the technical field of hot blast stove construction, in particular to an integral pouring method for a vault, a hot blast outlet and a hot blast tri-fork of a hot blast stove.
Background
The hot blast stove is a thermal equipment integrating combustion and heat transfer processes, which is required to provide hot air flow for the process, and generally has two large types, namely a regenerative hot blast stove which works intermittently and a continuous heat exchange hot blast stove. At present, a high-temperature ceramic heat exchange device is still an immature, intermittent-working regenerative hot blast stove is still a main stream product of the hot blast stove. At least two hot blast stoves must be operated alternately in order to continue to supply hot air. The hot blast stove is widely applied to various fields of industrial production, and hot blast stoves with different purposes and different structures are derived due to different technological requirements, different fuel types and different hot blast media.
The vault of the blast furnace hot blast stove is a spherical roof built by a plurality of layers of refractory materials, when the hot blast stove is newly built, the refractory materials are built layer by layer from bottom to top, and finally the building work is completed at the ball roof closing door, and the spherical vault of the hot blast stove is of a stable structure.
The vault of the hot blast stove is built by adopting the brick structure, the cooperation of various bricks is needed in the brickwork process due to the unique hemispherical structure of the vault of the hot blast stove, and when the brick cooperation of each part is not good, larger brick seams can appear, the brick falling and other conditions can easily appear, the service life of the hot blast stove is greatly influenced, moreover, the vault of the hot blast stove is built by adopting the brick structure, the hot air outlet and the hot air triple fork of the hot blast stove are also needed to be built by using additional working procedures, the workload is certainly increased, and the whole construction period of the hot blast stove can be greatly influenced. Therefore, it is necessary to solve the above problems by providing a method for integrally casting a dome, a hot air outlet and a hot air triple fork of a hot air furnace.
Disclosure of Invention
The invention aims to provide an integral pouring method for a vault, a hot air outlet and a hot air three-fork of a hot air furnace, so as to solve the problems in the prior art.
In order to achieve the aim, the invention provides the technical scheme that the method for integrally pouring the vault, the hot air outlet and the hot air three-fork of the hot air furnace is realized by using an integrally pouring device for the vault, the hot air outlet and the hot air three-fork of the hot air furnace, and comprises the following steps:
firstly, constructing a base, namely constructing a pouring base on the top of a furnace body of the hot blast stove, wherein the surface of the base is required to be flat and smooth, so that the construction of a template and the pouring work are convenient;
Step two, building a bottom layer template, namely building the bottom layer template above the base, wherein the bottom layer template consists of an inner layer of template and an outer layer of template with annular structures, and pouring the joint of the vault and the stove body of the hot blast stove is realized;
constructing a pipeline, namely constructing a hot air outlet and a hot air three-fork pipeline in the bottom layer template, wherein the pipeline construction can be carried out through a prefabricated pipe, and the prefabricated pipe is arranged in the bottom layer template so as to realize the integral pouring of the vault, the hot air outlet and the hot air three-fork;
Building a vault template, namely building a vault template above a bottom template, wherein the vault template consists of templates of an inner hemispherical structure and an outer hemispherical structure, and the vault template realizes pouring of a vault structure of the hot blast stove;
Pouring, namely pouring the castable into the vault template and the bottom template through the top of the vault template, wherein pouring of the castable can be performed through the cooperation of a stirring pump, a conveying pump and a vibration pump so as to ensure the pouring effect of the castable;
removing the mold, cleaning, removing the inner and outer layer templates after the castable is completely solidified, and polishing the uneven parts of the inner side and the outer side of the arch roof and the protruding reinforcing ribs;
and seventhly, installing a pipeline lining, namely installing the lining in a hot air outlet pipeline and a hot air three-fork pipeline which are formed by pouring, wherein the lining is constructed by adopting a fireproof spray coating, fireproof fibers and fireproof bricks in a combined manner so as to improve the heat resistance of the pipeline.
Preferably, the hot blast stove vault, the hot blast outlet and the hot blast three-fork integral pouring device comprises a supporting component, wherein a vault outer formwork is arranged at the top end of the outer side of the supporting component, a vault inner formwork is arranged at the bottom end of the outer side of the supporting component, and bottom formwork components are arranged at the bottom ends of the vault outer formwork and the vault inner formwork;
The bottom layer template assembly comprises a plurality of base pouring templates and pipeline pouring templates which are all positioned below the supporting assembly, an inner annular structure and an outer annular structure are formed by the base pouring templates and the pipeline pouring templates, cover plates are connected with four corners of the sides of the base pouring templates and the pipeline pouring templates in a threaded mode, connecting ribs which are distributed in a crossing mode are arranged on the cover plates at the same height on the base pouring templates and the pipeline pouring templates, two ends of each connecting rib are fixedly connected with the sides of the base pouring templates and the pipeline pouring templates through fixing assemblies, through grooves which enable the cover plates to rotate around the connecting ribs and slide are formed in the cover plates, and the adjacent base pouring templates in the bottom layer template assembly and the base pouring templates and the pipeline pouring templates are connected through connecting arms.
Preferably, the penetrating groove comprises a strip-shaped through groove, the strip-shaped through groove is used for penetrating the connecting ribs and enabling the connecting ribs to slide along the strip-shaped through groove, a conical groove for enabling the cover plate to rotate around the connecting ribs is formed in the center of one side, opposite to the cover plate, of the inner ring and the outer ring of the bottom layer template assembly, the fixing assembly comprises extending blocks fixedly connected with the base pouring template and the pipeline pouring template and located on two sides of a notch of the strip-shaped through groove, two extending blocks are connected with insertion pipes in a sliding mode through pin shafts and springs on one sides, close to each other, of the extending blocks, one end of each insertion pipe is fixedly connected with a connecting sleeve, locking bolts are connected in screw holes formed in the middle of the outer side of each connecting sleeve in a plugging mode, and the connecting ribs are connected in the insertion mode.
Preferably, the base pouring template and the pipeline pouring template are both of arc structures, cross reinforcing ribs are fixedly connected to the middle parts of the outer side surfaces of the base pouring template and the pipeline pouring template, and round holes are formed in the two ends of the cross reinforcing ribs in a penetrating mode.
Preferably, the connecting arm is of a "[ type structure, the two ends of the connecting arm are respectively provided with a pin hole in a penetrating mode, the pin holes are matched with the round holes, two symmetrically distributed mounting holes are respectively provided in the two ends of the base pouring template and the two ends of the pipeline pouring template in a penetrating mode, round reinforcing ribs are embedded in the middle of the outer side face of the pipeline pouring template, the inside of each round reinforcing rib is connected with a pipeline template in a plug-in mode, and the pipeline template comprises a straight pipe and a three-way pipe.
Preferably, the support assembly comprises an upper support plate and a lower support plate, wherein the upper surfaces of the upper support plate and the lower support plate are respectively provided with a spherical structure, the upper surfaces of the upper support plate and the lower surface of the lower support plate are respectively fixedly connected with a fixing plate, the fixing plates are respectively provided with an annular structure, a plurality of connecting holes distributed in an annular array are formed in the outer side of each fixing plate in a penetrating manner, connecting pipes are respectively inlaid in the middle parts of the upper support plate and the lower support plate, external threads are arranged on the outer side of each connecting pipe, and a plurality of annular grooves distributed in an annular array are formed in the outer side of each connecting pipe in a penetrating manner.
Preferably, the outside of connecting pipe has cup jointed the thread bush, the inboard of thread bush is provided with the recess, the medial surface of recess sets up to boss shape structure, thread bush's medial surface one end is provided with the internal thread with external screw thread looks adaptation, the outside fixedly connected with of thread bush is a plurality of lugs that are annular array and distribute, the lug sets up to the arc structure, the inside through-connection of connecting pipe has the supporting rib, the upper surface of upper supporting plate is inlayed and is had two symmetrical distribution's perfusion tube, the lower fixed surface of lower backup pad is connected with a plurality of supporting shoe that are annular array and distribute, the supporting shoe sets up to "L" shape structure, the through-hole has been seted up in the bottom middle part of supporting shoe in a running through.
The arch crown outer formwork comprises an arc outer formwork, wherein the arc outer formwork is located on the outer side of an upper supporting plate, the arc outer formworks are arranged in a plurality, the arc outer formworks are distributed in an annular array mode, the arc outer formworks form a hemispherical structure, the outer side face of the arc outer formwork is fixedly connected with a fixing frame, the inner walls of the two ends of the fixing frame are respectively provided with a positioning hole in a penetrating mode, the top of the fixing frame is matched with a connecting hole, the bottom of the fixing frame is matched with a mounting hole, the middle of the outer side face of the arc outer formwork is fixedly connected with vertical reinforcing ribs and transverse reinforcing ribs, the transverse reinforcing ribs and the vertical reinforcing ribs are vertically distributed, the two sides of the fixing frame are respectively provided with a plurality of splicing holes distributed at equal intervals in a penetrating mode, and splicing bolts are connected in the splicing holes in the two adjacent arc outer formworks in a penetrating mode.
Preferably, the arch crown inner formwork comprises an arc inner formwork and a connecting seat, wherein the arc inner formwork is positioned on the outer side of the lower supporting plate, the connecting seat is positioned below the lower supporting plate, a plurality of arc inner formworks are arranged, the arc inner formworks are distributed in an annular array, the arc inner formworks form a hemispherical structure, the connecting seat is arranged into an annular structure, the upper surface of the connecting seat is fixedly connected with a plurality of connecting blocks distributed in the annular array, the connecting blocks are arranged into an L-shaped structure, circular grooves are formed in the middle of the upper surface of the connecting blocks in a penetrating mode, supporting screws are connected in the circular grooves in a penetrating mode, and the top ends of the supporting screws are connected with through holes in a penetrating mode.
Preferably, the equal fixedly connected with engaging lug in lateral surface middle part and the bottom of connecting seat, two fixed lugs of medial surface middle part fixedly connected with of arc interior template, two the outside of fixed lug is through round pin axle swing joint first support arm and second support arm respectively, the one end of first support arm and second support arm is through round pin axle and two engaging lug swing joint respectively, the medial surface fixedly connected with reinforcing frame of arc interior template, the hole of assembling has all been run through at the inside wall both ends of reinforcing frame, the top assemble hole and connecting hole looks adaptation, the bottom assemble hole and mounting hole looks adaptation, the medial surface fixedly connected with perpendicular strengthening rib and the horizontal strengthening rib of arc interior template, perpendicular strengthening rib and horizontal strengthening rib are perpendicular distribution.
The invention has the technical effects and advantages that:
1. According to the invention, the supporting component is arranged, the outer side of the supporting component is provided with the vault outer formwork and the vault inner formwork, the vault outer formwork and the vault inner formwork are matched to form a vault formwork structure, the lower side of the supporting component is provided with the bottom formwork component, the bottom formwork component and the vault formwork structure are matched to realize integral pouring of the vault, the bottom formwork component is internally provided with the pipeline formwork, and the arrangement of the pipeline formwork can realize reservation of hot air outlets and hot air three-fork pipelines in the pouring process, so that integral pouring of the vault, the hot air outlets and the hot air three-fork of the hot air furnace can be realized, smooth brick-free seams in the vault are ensured, and the construction efficiency of the hot air furnace is improved.
2. According to the invention, the support assembly is arranged and comprises the upper support plate and the lower support plate, the upper support plate can realize the connection support of the vault outer formwork, the lower support plate can realize the connection and fixation of the vault inner formwork, the upper support plate and the lower support plate are connected through the support ribs, and the support ribs can be directly left in the vault after pouring is finished, so that the installation and the removal of the formwork are facilitated.
3. According to the invention, the bottom layer template assembly is arranged, the bottom layer template assembly comprises the base pouring template and the pipeline pouring template, the base pouring template and the pipeline pouring template form an annular structure with an inner layer and an outer layer, the vault base can be formed by pouring in the annular structure, and meanwhile, the bottom layer template can also play a supporting role on the vault outer template and the vault inner template so as to improve the overall stability of the device.
4. According to the invention, the cover plate, the strip-shaped through groove and the conical groove are arranged, so that on one hand, the connecting ribs can be misplaced without bending when the template is fixed, on the other hand, the angle grinding and cutting of the connecting ribs are convenient, and on the other hand, the demoulding of the bottom template assembly is convenient, and therefore, the pouring efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic bottom view of the overall structure of the present invention;
FIG. 3 is a schematic view of a support assembly according to the present invention;
FIG. 4 is a bottom view of the lower support plate of the present invention;
FIG. 5 is a schematic cross-sectional view of the thread bush structure of the present invention;
FIG. 6 is a schematic view of the structure of the arc-shaped outer form of the present invention;
FIG. 7 is a schematic view of the construction of the dome inner mold plate of the present invention;
FIG. 8 is a schematic view of the relationship between the dome inner mold plate and the lower connecting seat of the present invention;
FIG. 9 is a schematic view of the structure of an arcuate inner form of the present invention;
FIG. 10 is a schematic view of the relationship between the lower support plate and the connecting seat of the present invention;
FIG. 11 is a schematic view of a bottom form assembly of the present invention;
FIG. 12 is a schematic view of a base casting form structure of the present invention;
FIG. 13 is a schematic view of a pipeline form of the present invention;
FIG. 14 is a schematic view of the connection of the bottom template assembly according to embodiment 2 of the present invention;
FIG. 15 is a schematic view of the structure of the strip-shaped through grooves and the conical grooves on the pipe casting formwork of the embodiment 2 of the present invention;
Fig. 16 is a front view of a pipe casting die plate according to embodiment 2 of the present invention.
1, A supporting component; 101, upper support plate, 102, lower support plate, 103, fixed plate, 104, connecting hole, 105, connecting pipe, 106, bar slot, 107, threaded sleeve, 108, recess, 109, bump, 110, support bar, 111, pouring tube, 112, support block, 113, through hole, 2, vault outer form, 201, arc outer form, 202, fixed frame, 203, positioning hole, 204, transverse stiffener, 205, vertical stiffener, 206, splice hole, 3, vault inner form, 301, arc inner form, 302, connection seat, 303, connection block, 304, circular slot, 305, support screw, 306, connection lug, 307, fixed lug, 308, first arm, 309, second arm, 310, stiffener, 311, splice hole, 312, vertical stiffener, 313, horizontal stiffener, 4, bottom form assembly, 401, base pour form, 402, pipe pour form, 403, bar slot, 404, extension block, 405, cannula, 406, circular, locking bolt, connection bar, 409, cross stiffener, 410, connection arm, 414, 416, tapered form, mounting hole, 417.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The invention provides a method for integrally pouring a vault, a hot air outlet and a hot air tri-fork of a hot air furnace as shown in fig. 1 to 13, which comprises the following steps:
firstly, constructing a base, namely constructing a pouring base on the top of a furnace body of the hot blast stove, wherein the surface of the base is required to be flat and smooth, so that the construction of a template and the pouring work are convenient;
Step two, building a bottom layer template, wherein the bottom layer template is built above the base and consists of an inner layer of template and an outer layer of template with annular structures, so that pouring of the joint of the vault and the stove body of the hot blast stove can be realized;
constructing a pipeline, namely constructing a hot air outlet and a hot air three-fork pipeline in the bottom layer template, wherein the pipeline construction can be carried out through a prefabricated pipe, and the prefabricated pipe is arranged in the bottom layer template so as to realize the integral pouring of the vault, the hot air outlet and the hot air three-fork;
Building a vault template, namely building a vault template above a bottom template, wherein the vault template consists of templates with inner and outer hemispherical structures, and the vault template can realize pouring of a vault structure of the hot blast stove;
Pouring, namely pouring the castable into the vault template and the bottom template through the top of the vault template, wherein pouring of the castable can be performed through the cooperation of a stirring pump, a conveying pump and a vibration pump so as to ensure the pouring effect of the castable;
removing the mold, cleaning, removing the inner and outer layer templates after the castable is completely solidified, and polishing the uneven parts of the inner side and the outer side of the arch roof and the protruding reinforcing ribs;
and seventhly, installing a pipeline lining, namely installing the lining in a hot air outlet pipeline and a hot air three-fork pipeline which are formed by pouring, wherein the lining is constructed by adopting a fireproof spray coating, fireproof fibers and fireproof bricks in a combined manner so as to improve the heat resistance of the pipeline.
The invention also provides a hot blast stove vault, a hot blast outlet and a hot blast three-fork integral pouring device, which comprises a support component 1, a vault outer formwork 2, a vault inner formwork 3 and a bottom formwork component 4, wherein the vault outer formwork 2 is arranged at the top end of the outer side of the support component 1, the vault inner formwork 3 is arranged at the bottom end of the outer side of the support component 1, and the bottom ends of the vault outer formwork 2 and the vault inner formwork 3 are both provided with the bottom formwork component 4.
The supporting component 1 comprises an upper supporting plate 101 and a lower supporting plate 102, the upper surfaces of the upper supporting plate 101 and the lower supporting plate 102 are all arranged to be of spherical structures, the upper surface of the upper supporting plate 101 and the lower surface of the lower supporting plate 102 are fixedly connected with a fixing plate 103, the fixing plate 103 is arranged to be of an annular structure, a plurality of connecting holes 104 distributed in an annular array are formed in the outer side of the fixing plate 103 in a penetrating mode, connecting pipes 105 are inlaid in the middle portions of the upper supporting plate 101 and the lower supporting plate 102, external threads are arranged on the outer side of the connecting pipes 105, and a plurality of strip-shaped grooves 106 distributed in an annular array are formed in the outer side of the connecting pipes 105 in a penetrating mode.
Specifically, the outside of connecting pipe 105 has cup jointed and has been connected screw thread cover 107, and the inboard of screw thread cover 107 is provided with recess 108, and the medial surface of recess 108 sets up to boss shape structure, and the medial surface one end of screw thread cover 107 is provided with the internal thread with external screw thread looks adaptation, and the outside fixedly connected with of screw thread cover 107 is a plurality of lugs 109 that are annular array and distribute, and lug 109 sets up to the arc structure, and the inside through connection of connecting pipe 105 has brace bar 110.
More specifically, when the thread bush 107 is rotated, the thread bush 107 slides on the outer side of the connecting pipe 105 under the influence of threads, and as the inner side of the thread bush 107 is provided with the groove 108 with the boss-shaped structure, the inner wall of the groove 108 extrudes the connecting pipe 105, so that the connecting pipe 105 deforms along the direction of the strip-shaped groove 106, the position of the supporting rib 110 is fixed by the deformation of the connecting pipe 105, thereby fixing the position between the supporting rib 110 and the lower supporting plate 102, the upper surface of the upper supporting plate 101 is inlaid with two symmetrically distributed pouring pipes 111, the lower surface of the lower supporting plate 102 is fixedly connected with a plurality of supporting blocks 112 distributed in an annular array, the supporting blocks 112 are arranged into an L-shaped structure, and through holes 113 are formed in the middle of the bottom end of the supporting blocks 112.
The vault external form 2 includes arc external form 201, and arc external form 201 is located the outside of upper supporting plate 101, and arc external form 201 is provided with a plurality of, and a plurality of arc external form 201 are annular array and distribute, and hemispherical structure is constituteed to a plurality of arc external form 201, and the lateral surface fixedly connected with fixed frame 202 of arc external form 201, the locating hole 203 has all been seted up in the both ends inner wall of fixed frame 202 throughout, top locating hole 203 and connecting hole 104 looks adaptation, bottom locating hole 203 and mounting hole 413 looks adaptation.
Specifically, the positioning holes 203 and the connecting holes 104 can be inserted with bolts, so that connection and fixation between the arc-shaped outer templates 201 and the upper supporting plate 101 are realized, the middle part of the outer side surface of the arc-shaped outer templates 201 is fixedly connected with vertical reinforcing ribs 205 and transverse reinforcing ribs 204, the transverse reinforcing ribs 204 and the vertical reinforcing ribs 205 are vertically distributed, a plurality of splicing holes 206 which are distributed at equal intervals are formed in a penetrating manner on two sides of the fixing frame 202, and splicing bolts are connected in the splicing holes 206 on two adjacent arc-shaped outer templates 201.
The arch crown inner formwork 3 comprises an arc inner formwork 301 and a connecting seat 302, wherein the arc inner formwork 301 is positioned at the outer side of the lower supporting plate 102, the connecting seat 302 is positioned below the lower supporting plate 102, a plurality of arc inner formworks 301 are arranged, the arc inner formworks 301 are distributed in an annular array, the arc inner formworks 301 form a hemispherical structure, the connecting seat 302 is arranged in an annular structure, the upper surface of the connecting seat 302 is fixedly connected with a plurality of connecting blocks 303 distributed in an annular array, the connecting blocks 303 are arranged in an L-shaped structure, circular grooves 304 are formed in the middle of the upper surface of the connecting blocks 303 in a penetrating manner, supporting screws 305 are connected in the inner penetrating manner of the circular grooves 304, and the top ends of the supporting screws 305 are connected with through holes 113 in a penetrating manner;
specifically, the middle part of the outer side surface of the connecting seat 302 and the bottom end are fixedly connected with connecting lugs 306, the middle part of the inner side surface of the arc-shaped inner template 301 is fixedly connected with two fixing lugs 307, the outer sides of the two fixing lugs 307 are respectively and movably connected with a first support arm 308 and a second support arm 309 through pin shafts, one ends of the first support arm 308 and the second support arm 309 are respectively and movably connected with the two connecting lugs 306 through pin shafts, the first support arm 308, the second support arm 309 and the arc-shaped inner template 301 form a stable triangle structure, support can be provided for the arc-shaped inner template 301, and the top end of the arc-shaped inner template 301 is connected with the lower support plate 102.
More specifically, the bottom of the arc-shaped inner template 301 is connected with the base pouring template 401, so that the position of the arc-shaped inner template 301 can be supported and fixed, the inner side surface of the arc-shaped inner template 301 is fixedly connected with the reinforcing frame 310, the two ends of the inner side wall of the reinforcing frame 310 are respectively provided with the assembling holes 311 in a penetrating mode, the top assembling holes 311 are matched with the connecting holes 104, the bottom assembling holes 311 are matched with the mounting holes 413, the inner side surface of the arc-shaped inner template 301 is fixedly connected with the vertical reinforcing ribs 312 and the horizontal reinforcing ribs 313, the vertical reinforcing ribs 312 and the horizontal reinforcing ribs 313 are vertically distributed, and the vertical reinforcing ribs 312 and the horizontal reinforcing ribs 313 are matched with each other, so that the structural strength of the arc-shaped inner template 301 can be improved.
The bottom layer template assembly 4 comprises a plurality of base pouring templates 401 and pipeline pouring templates 402, wherein the base pouring templates 401 and the pipeline pouring templates 402 are located below the supporting assembly 1, the plurality of base pouring templates 401 and the pipeline pouring templates 402 form an inner annular structure and an outer annular structure, and the side walls of the plurality of adjacent base pouring templates 401 and the pipeline pouring templates 402 are connected through bolts in a threaded mode.
Specifically, the base pouring template 401 and the pipeline pouring template 402 are all arranged to be arc structures, the four corners of the side faces of the base pouring template 401 and the pipeline pouring template 402 are respectively provided with a strip-shaped through groove 403 in a penetrating mode, two sides of a notch of each strip-shaped through groove 403 are fixedly connected with extension blocks 404, one side, close to each other, of each extension block 404 is movably connected with a cannula 405 through a pin shaft, one end of each cannula 405 is fixedly connected with a connecting sleeve 406, locking bolts 407 are inserted into screw holes formed in the middle of the outer side of each connecting sleeve 406, connecting ribs 408 are inserted into the inner side of each cannula 405 and are connected with adjacent two connecting ribs 408 in a crossed mode, cross reinforcing ribs 409 are fixedly connected to the middle of the outer side face of each base pouring template 401 and the corresponding pipeline pouring template 402, and cutting assemblies such as angle grinders can be used for cutting the positions between the corresponding cannulas 405 and the strip-shaped through grooves 403, so that the device can be removed conveniently.
More specifically, circular holes 410 have all been run through at the both ends of cross strengthening rib 409, the inboard of base pouring template 401 is provided with a plurality of linking arms 411, linking arm 411 sets up to "[ shape structure, pinhole 412 has all been run through at the both ends of linking arm 411, pinhole 412 and circular hole 410 looks adaptation, two symmetrically distributed's mounting hole 413 have all been run through at the both ends of base pouring template 401 and pipeline pouring template 402, linking arm 411 is provided with two sets of, two sets of linking arms 411 dislocation distribution, two sets of linking arms 411 cooperation, can realize the fixed of position between two adjacent base pouring templates 401, circular strengthening rib 414 has been inlayed at the lateral surface middle part of pipeline pouring template 402, circular strengthening rib 414's inside plug connection has pipeline template 415, pipeline template 415 includes straight tube and three-way pipe.
Specifically, the pipeline template 415 can be installed in the bottom template component 4, when the vault is poured, the hot air outlet and the hot air three-way opening can be reserved on the vault base through the arrangement of the pipeline template 415, so that the integral pouring of the hot air outlet and the hot air three-way opening can be realized, two ends of the pipeline template 415 are respectively connected with the two pipeline pouring templates 402, the pipeline pouring templates 402 are components forming the bottom template component 4, and accordingly the stability of the installation of the pipeline template 415 can be guaranteed, the pipeline template 415 with a straight pipe structure can be used for pouring a pipeline with the hot air outlet, and the pipeline template 415 with a three-way pipe structure can be used for pouring the hot air three-way opening.
When the bottom layer template assembly 4 is constructed, a plurality of base pouring templates 401 and pipeline pouring templates 402 are connected end to end, the positions of the pipeline pouring templates 402 are adjusted according to the preset positions of hot air outlets and hot air three-way pipelines, the two adjacent base pouring templates 401 and pipeline pouring templates 402 are fixedly connected through bolts, then the middle parts of connecting ribs 408 are bent to form a misplacement arc-shaped opening, meanwhile, the connecting ribs 408 are inserted into the insertion pipes 405 until the two ends of the connecting ribs 408 are respectively connected with the two insertion pipes 405 in a penetrating way, then locking bolts 407 are screwed, the locking bolts 407 can fix the positions between the insertion pipes 405 and the connecting ribs 408, template glue is filled in gaps between the connecting ribs 408 and the strip-shaped through grooves 403, the connecting ribs 408 are sequentially arranged in the plurality of insertion pipes 405, the adjacent two connecting ribs 408 are distributed in a staggered mode, the connecting ribs 408 can fix the positions between the inner base pouring template 401 and the outer base pouring template 402, the connecting arms 411 are arranged on the inner layer of the base pouring template 401, pin rods can be inserted into pin holes 412 at two ends of the connecting arms 411, the pin rods are in inserted connection with round holes 410 on the cross reinforcing ribs 409, connection between the connecting arms 411 and the cross reinforcing ribs 409 can be achieved, the connecting arms 411 are provided with two groups, the two groups of connecting arms 411 are distributed in a staggered mode, the two groups of connecting arms 411 are matched, the positions between the adjacent two base pouring templates 401 can be fixed, and therefore the construction of the bottom layer template assembly 4 can be achieved.
When the vault inner formwork 3 is built, firstly, the connecting seat 302 is fixed below the lower supporting plate 102, the top ends of the supporting screw rods 305 are inserted into the through holes 113, the bottom ends of the supporting screw rods 305 are inserted into the circular grooves 304, the positions of the bottom end nuts of the supporting screw rods 305 are adjusted until the plurality of supporting screw rods 305 fix the connecting seat 302 below the lower supporting plate 102, at the moment, the arc inner formwork 301 is placed on the outer side of the lower supporting plate 102, the connection between the arc inner formwork 301 and the lower supporting plate 102 is realized by arranging bolts in the connecting holes 104 and the assembling holes 311, the two ends of the first supporting arm 308 and the second supporting arm 309 are respectively connected with the connecting lugs 306 and the fixing lugs 307 through bolts, the first supporting arm 308, the second supporting arm 309 and the arc inner formwork 301 form a stable triangle structure, the support can be provided for the arc inner formwork 301, the top ends of the arc inner formwork 301 are connected with the lower supporting plate 102, the bottom ends of the arc inner formwork 301 are connected with the base pouring formwork 401, therefore the positions of the arc inner formwork 301 can be supported and fixed, the arc inner formworks 301 can be installed in sequence, and the vault inner formwork 3 can be built.
When the vault outer formwork 2 is constructed, the upper supporting plate 101 is installed above the lower supporting plate 102, firstly, the supporting rib 110 is inserted into the connecting pipe 105 in the middle of the lower supporting plate 102, the threaded sleeve 107 is sleeved on the outer side of the connecting pipe 105, the threaded sleeve 107 is rotated, the threaded sleeve 107 slides on the outer side of the connecting pipe 105 under the influence of threads, and as the inner side of the threaded sleeve 107 is provided with the groove 108 with a boss-shaped structure, the inner wall of the groove 108 presses the connecting pipe 105, so that the connecting pipe 105 deforms along the direction of the strip-shaped groove 106, the position of the supporting rib 110 is fixed by the deformation of the connecting pipe 105, thereby fixing the position between the supporting rib 110 and the lower supporting plate 102, and fixing the position between the supporting rib 110 and the upper supporting plate 101 according to the same method, namely, the installation between the lower supporting plate 102 and the upper supporting plate 101 can be realized;
When the arc-shaped outer template 201 is installed, the top end of the arc-shaped outer template 201 is attached to the outer side of the upper supporting plate 101, the position of the arc-shaped outer template is fixed through bolts, the bottom end of the arc-shaped outer template 201 is connected with the bottom end of the base pouring template 401 through bolts, the installation of the arc-shaped outer template 201 can be achieved, a plurality of arc-shaped outer templates 201 are installed on the outer side of the upper supporting plate 101 in sequence, and the construction of the vault outer template 2 can be achieved.
When the vault is poured, pouring materials are injected between the vault outer formwork 2 and the vault inner formwork 3 through the pouring pipes 111, and the pouring materials can flow into the bottom formwork assembly 4 along the vault inner formwork 3, so that the whole pouring of the vault of the hot blast stove, the hot air outlet pipeline and the hot air tri-junction pipeline can be realized.
After the casting material is completely solidified, the dome outer formworks 2 are sequentially carried out, then the connecting ribs 408 corresponding to one group of formworks of the bottom formwork component 4 are cut off at the positions between the insertion pipes 405 and the strip-shaped through grooves 403 by using an angle grinder, the connecting ribs 408 are subjected to angle grinding, then the outer formworks are removed by pulling the outer formworks of one group of base pouring formworks 401 corresponding to the cut-off connecting ribs 408 outwards, then the inner formworks of one group of base pouring formworks 401 corresponding to the cut-off connecting ribs 408 are pulled inwards, so that the inner formworks of one group of base pouring formworks 401 are removed, then the first support arms 308 and the second support arms 309 on one group of dome inner formworks 3 corresponding to the cut-off connecting ribs 408 are removed, then one group of dome inner formworks 3 corresponding to the first support arms 308 and the second support arms 309 are removed by knocking, so that the dome inner formworks 3 are slid downwards, and demoulding is completed, and then the rest of the bottom formwork component 4 and the dome inner formworks 3 are removed, and finally the support component 1 is removed.
Example 2
Based on the previous embodiment, since the connecting ribs 408 are staggered in the installation process, the middle of the connecting rib 408 is often required to be bent in the connection process, the bent connecting rib 408 is not easy to pass through the strip-shaped through groove 403, and meanwhile, in the demolding process, the demolding of the bottom template assembly 4 can be performed only by performing angle grinding on the cut connecting rib 408, but the cornea needs to take a lot of time, so that the problem of low pouring efficiency is caused, and in order to solve the problem, the following improvement is performed on the basis of the embodiment 1, and the technical scheme after improvement is as follows.
As shown in fig. 14-16, the bottom layer template assembly 4 comprises a plurality of base pouring templates 401 and pipeline pouring templates 402 which are all positioned below the support assembly 1, an inner annular structure and an outer annular structure are formed by the plurality of base pouring templates 401 and the pipeline pouring templates 402, cover plates 416 are connected to four corners of the sides of the base pouring templates 401 and the pipeline pouring templates 402 in a threaded manner, connecting ribs 408 which are distributed in a crossed manner are arranged on the cover plates 416 at the same height on the base pouring templates 401 and the pipeline pouring templates 402, two ends of each connecting rib 408 are fixedly connected with the sides of the base pouring templates 401 and the pipeline pouring templates 402 through fixing assemblies, through grooves which enable the cover plates 416 to rotate around the connecting ribs 408 and slide are formed in the cover plates 416, and the adjacent base pouring templates 401 and the pipeline pouring templates 402 in the inner ring of the bottom layer template assembly 4 are connected through connecting arms 411.
The penetrating groove comprises a strip-shaped through groove 403, the strip-shaped through groove 403 is used for penetrating a connecting rib 408, the connecting rib 408 can slide along the strip-shaped through groove 403, a conical groove 417 for enabling the cover plate 416 to rotate around the connecting rib 408 is formed in the center of one side opposite to the cover plate 416 on the inner ring and the outer ring of the bottom-layer template assembly 4, the fixing assembly comprises extension blocks 404 fixedly connected with the base pouring template 401 and the pipeline pouring template 402 and positioned on two sides of a notch of the strip-shaped through groove 403, one side, close to each other, of the two extension blocks 404 is slidably connected with a cannula 405 through a pin shaft and a spring, one end of the cannula 405 is fixedly connected with a connecting sleeve 406, a locking bolt 407 is connected in a screw hole formed in the middle of the outer side of the connecting sleeve 406 in a plugging manner, and the connecting rib 408 is connected in the interior of the cannula 405 in a plugging manner.
When the bottom template assembly 4 is constructed, a plurality of base pouring templates 401 and pipeline pouring templates 402 are connected end to end, the positions of the pipeline pouring templates 402 are adjusted according to preset positions of hot air outlets and hot air three-way pipelines, the two adjacent base pouring templates 401 and the pipeline pouring templates 402 are fixedly connected through bolts, then one of the strip-shaped through grooves 403 on the two cover plates 416 at the same height on the same base pouring templates 401 and the pipeline pouring templates 402 is positioned at a horizontal position, the other is positioned at a vertical position, namely, an included angle is ninety degrees, then one connecting rib 408 is inserted into a corresponding insertion pipe 405 of the strip-shaped through groove 403 in a horizontal state until two ends of the connecting rib 408 are respectively connected with the two insertion pipes 405 in a penetrating mode, then locking bolts 407 are screwed, the positions between the insertion pipe 405 and the connecting rib 408 are fixed, and then the other connecting rib 408 is inserted into the insertion pipe 405 corresponding to the strip-shaped through groove 403 in a vertical state; because of the arrangement of the pin shaft and the spring, the insertion tube 405 is upwards moved to a position where the connecting ribs 408 can pass through by pushing the insertion tube 405 upwards, then the locking bolt 407 is screwed, all the other connecting ribs 408 are arranged in a crossed manner and fixed in the manner, then template glue is filled in the gaps between the connecting ribs 408 and the strip-shaped through grooves 403, the connecting rib 408 can fix the positions between the inner base pouring template 401 and the outer base pouring template 402, the connecting arms 411 are installed on the inner layer of the base pouring template 401, pin rods can be inserted into pin holes 412 at two ends of the connecting arms 411, the pin rods are inserted into round holes 410 on the cross reinforcing ribs 409, connection between the connecting arms 411 and the cross reinforcing ribs 409 can be achieved, the connecting arms 411 are provided with two groups, the two groups of connecting arms 411 are distributed in a staggered mode, the two groups of connecting arms 411 are matched, the position between two adjacent base pouring templates 401 can be fixed, and accordingly construction of a bottom layer template assembly 4 can be achieved.
In the process of dismantling the base pouring templates 401 of the inner ring of the bottom template assembly 4 after the castable is completely solidified, firstly dismantling connecting arms 411 fixed on one of the base pouring templates 401, then dismantling connecting pieces fixed on the base pouring templates 401 and the vault inner templates 3, then scraping the filled template glue, cutting off the positions of the connecting ribs 408 between the insertion pipes 405 and the cover plates 416 through the cutting assembly, then dismantling the other base pouring templates 401 and the pipeline pouring templates 402 according to the clockwise or anticlockwise sequence through rotating the cover plates 416 corresponding to the horizontal strip-shaped through grooves 403, enabling the horizontal strip-shaped through grooves 403 to be in a vertical state and to be opened upwards, and then knocking the base pouring templates 401 up and down to enable the base pouring templates 401 to slide downwards along the strip-shaped through grooves 403, so that the connecting ribs 408 can be moved to the middle of the strip-shaped through grooves 403, further angle grinding equipment can be convenient for angle grinding the connecting ribs 408, after angle grinding, the limit of the connecting ribs 408 is relieved, dismantling the first base pouring templates 401 through up and down knocking down, and dismantling the rest base pouring templates 401 and the pipeline pouring templates 402 according to the clockwise or anticlockwise sequence, so that the bottom template assembly 4 can be dismantled.
When the rest of the base pouring templates 401 and the pipeline pouring templates 402 are dismantled, the connecting ribs 408 are firstly cut off at the positions between the insertion pipes 405 and the cover plates 416 through the cutting assemblies, then the corresponding cover plates 416 on the dismantled base pouring templates 401 and pipeline pouring templates 402 are rotated to enable the strip-shaped through grooves 403 on the cover plates 416 to be in a horizontal state, openings of the strip-shaped through grooves 403 face one side of the adjacent base pouring templates 401 and pipeline pouring templates 402 which are not dismantled, then the base pouring templates 401 and the pipeline pouring templates 402 are knocked left and right, so that the base pouring templates 401 and the pipeline pouring templates 402 move in the left and right directions, and after the base pouring templates 401 and the pipeline pouring templates 402 are completely moved left and right, demoulding can be completed through radial pulling out of the base pouring templates 401 and the pipeline pouring templates 402, so that angle grinding is not needed, a large amount of demoulding time is saved, and pouring efficiency is improved.
It should be noted that the foregoing description is only a preferred embodiment of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood that modifications, equivalents, improvements and modifications to the technical solution described in the foregoing embodiments may occur to those skilled in the art, and all modifications, equivalents, and improvements are intended to be included within the spirit and principle of the present invention.
Claims (6)
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| CN202211140598.5A CN115435596B (en) | 2022-09-16 | 2022-09-16 | Integral casting method of hot blast furnace vault, hot blast outlet and hot blast three-way junction |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108193010A (en) * | 2018-03-09 | 2018-06-22 | 中冶京诚工程技术有限公司 | Lining masonry structure of hot-air pipeline and lining masonry structure of three-fork of hot-air pipeline |
| CN114107587A (en) * | 2021-11-17 | 2022-03-01 | 郑州安耐克实业有限公司 | Sectional type three-fork masonry structure applied to hot air pipeline system of hot air furnace |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4290751A (en) * | 1979-11-08 | 1981-09-22 | Republic Steel Corporation | Blast furnace stove |
| NL9200134A (en) * | 1992-01-24 | 1993-08-16 | Hoogovens Groep Bv | WIND HEATER WITH CAST CONNECTING ELEMENTS AND METHOD FOR BUILDING A WIND HEATER. |
| CN114230355A (en) * | 2022-01-15 | 2022-03-25 | 郑州豫兴热风炉科技有限公司 | Manufacturing method of three-fork pipeline for hot blast stove |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108193010A (en) * | 2018-03-09 | 2018-06-22 | 中冶京诚工程技术有限公司 | Lining masonry structure of hot-air pipeline and lining masonry structure of three-fork of hot-air pipeline |
| CN114107587A (en) * | 2021-11-17 | 2022-03-01 | 郑州安耐克实业有限公司 | Sectional type three-fork masonry structure applied to hot air pipeline system of hot air furnace |
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