CN113199596A - Anti-cracking magnesia carbon brick with good heat insulation effect and manufacturing process thereof - Google Patents
Anti-cracking magnesia carbon brick with good heat insulation effect and manufacturing process thereof Download PDFInfo
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- CN113199596A CN113199596A CN202110411453.3A CN202110411453A CN113199596A CN 113199596 A CN113199596 A CN 113199596A CN 202110411453 A CN202110411453 A CN 202110411453A CN 113199596 A CN113199596 A CN 113199596A
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- plate
- heat insulation
- magnesia carbon
- carbon brick
- box body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
- B28B3/26—Extrusion dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/44—Producing shaped prefabricated articles from the material by forcing cores into filled moulds for forming hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/04—Discharging the shaped articles
- B28B13/06—Removing the shaped articles from moulds
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
- C04B35/04—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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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
- F27D1/045—Bricks for lining cylindrical bodies, e.g. skids, tubes
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention discloses a cracking-proof magnesia carbon brick with good heat insulation effect, which comprises a brick body, wherein a heat insulation sealing groove is arranged on the fire facing surface of the brick body; according to the invention, magnesia carbon brick raw materials are placed into a forming box body, a magnesia carbon brick blank is obtained through machine pressing forming, a hollow circular groove is formed through an inner groove forming pipe, a heat insulation expanding agent is sprayed on the inner wall of the hollow circular groove, the magnesia carbon brick blank is automatically discharged by utilizing the lifting of the forming box body, and a heat insulation sealing plate can be conveniently embedded into a heat insulation sealing groove by an embedding mechanism; this magnesia carbon brick is thermal-insulated effectual, and inside produced stress is very little when receiving high temperature to toast, is difficult to take place the fracture phenomenon for the equipment for making this magnesia carbon brick can accomplish press forming, inside fluting, inlay thermal-insulated closing plate and automatic unloading automatically, and degree of automation is high, and production efficiency is high.
Description
Technical Field
The invention belongs to the technical field of production of magnesia carbon materials, and particularly relates to a cracking-resistant magnesia carbon brick with a good heat insulation effect and a manufacturing process thereof.
Background
The magnesia carbon brick is made up by using magnesia carbon clay or other magnesia carbon raw material through the processes of firing, mainly using it in smelting furnace, resisting high temp. of 1580-1770 deg.C, and can be used as high-temp. building material and structural material of building kiln and various thermal equipments, and can be subjected to various physical and chemical changes and mechanical actions at high temp.
Magnesia carbon brick can be closely orderly piled up when using, the heat in magnesia carbon brick can effectual assurance kiln can not run off, but in whole work because magnesia carbon brick receives high temperature baking for a long time, consequently although thermal-insulated effectual keeps warm to those solid magnesia carbon bricks, but the stress of self inside is big, the phenomenon of fracture takes place easily, and the shape that has some magnesia carbon bricks is inside hollow, this kind of magnesia carbon brick has alleviateed weight, when receiving high temperature, because inside hollow, consequently, the stress that produces is very little, the phenomenon of fracture is not enough taken place, but this kind of hollow brick keeps warm thermal-insulated effect is poor, be difficult to guarantee the heat in the kiln, thereby can increase the energy consumption, must not repay.
Disclosure of Invention
The invention aims to provide a cracking-proof magnesia carbon brick with good heat insulation effect and a manufacturing process thereof, aiming at the defects of the prior art, a hollow round groove is arranged in the magnesia carbon brick, a heat insulation sealing plate is embedded at the round opening end of the hollow groove, the heat insulation sealing plate is integrally fired with the magnesia carbon brick through blank mud, a heat insulation expanding agent is uniformly coated on the inner wall of the hollow round groove, and the heat insulation expanding agent covers the whole hollow round groove after water is injected from the outside, so that the effective heat insulation effect in the magnesia carbon brick is achieved.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a thermal-insulated effectual anti-cracking magnesia carbon brick, includes the brick body, its characterized in that: the fire-facing surface of the brick body is provided with a plurality of vertically distributed heat insulation sealing grooves, the rear side surface of each heat insulation sealing groove is provided with a hollow round groove extending inwards, the inner wall of each hollow round groove is coated with a heat insulation expanding agent, a heat insulation sealing plate is clamped in each heat insulation sealing groove, and the rear end of the top surface of the brick body is provided with a water through hole penetrating through all the hollow round grooves;
blank mud is coated on the outer surface of the heat insulation sealing plate;
the content of the polymer water-absorbing material in the heat insulation expanding agent is 0.5-1 percent;
the production process of the anti-cracking magnesia carbon brick with good heat insulation effect comprises the following steps:
firstly, putting a magnesia carbon brick raw material into a forming box body in a forming mechanism from an external stirring device through a feeding channel, wherein the forming box body is internally provided with a plurality of inner groove forming pipes and a plurality of sealing groove forming pipes, an extrusion plate in the forming box body is inserted into a water steel column after first elastic extrusion, and then the extrusion plate is subjected to rigid extrusion to form the magnesia carbon brick raw material into a magnesia carbon brick blank with a heat insulation sealing groove, a hollow circular groove and a water through hole;
the method for forming the magnesia carbon brick blank comprises the following steps:
the magnesia carbon brick raw material enters from a feeding and discharging groove on the top surface of the forming box body, the forming box body moves backwards to enable the cover sealing plate to be inserted into the top of the forming box body and seal the feeding and discharging groove, and two movable extrusion plates positioned on the left side and the right side of the forming box body are extruded mutually twice in different degrees under the action of the double-head hydraulic cylinder;
the first extrusion of the extrusion plate is elastic extrusion, the extrusion time is 1s, the forming pressure is 50-80MPa, the density of the magnesium-carbon brick blank which is preliminarily formed is loose, only a hollow round groove is formed in the magnesium-carbon brick blank, a sealing groove forming pipe extends into the forming box body from the front side wall body of the forming box body under the action of a first hydraulic cylinder, so that a heat insulation sealing groove is formed on the front side surface of the magnesium-carbon brick blank in a pressing mode, and a water steel column is inserted into the magnesium-carbon brick blank from a small through hole in a cover plate and penetrates through a plurality of inner groove forming pipes under the action of a second hydraulic cylinder;
the second extrusion of the extrusion plate is rigid extrusion, the pressing time is 3s, the forming pressure is 200-250MPa, the density of the formed magnesia carbon brick blank is firm, and a water through hole communicated with the hollow circular groove is formed in the density of the magnesia carbon brick blank;
after the water-through steel column is pulled out, firstly injecting a proper heat insulation expanding agent into the inner groove forming pipe through an injection device, wherein the heat insulation expanding agent in the inner groove forming pipe can be automatically and uniformly sprayed on the inner wall of the hollow circular groove when the inner groove forming pipe moves outwards to be separated from the magnesia carbon brick blank;
the method for uniformly spraying the heat-insulating expanding agent on the inner wall of the hollow circular groove comprises the following steps:
the inner groove forming pipe is sealed through a piston after a proper heat insulation expanding agent is injected, the piston pushes the heat insulation expanding agent inwards, a discharge pipe is arranged in a rear end plate of the inner groove forming pipe, a plurality of uniformly distributed spraying thin pipes are arranged on a wall body at the outer end of the discharge pipe, the inner groove forming pipe moves outwards to separate from a magnesium-carbon brick blank under the action of a third hydraulic cylinder, at the moment, the piston is fixed, so that the heat insulation expanding agent in the inner groove forming pipe is extruded to enter the inner groove forming pipe and is sprayed out from the spraying thin pipes, and the heat insulation expanding agent is uniformly sprayed on the inner wall of the hollow circular groove through the spraying thin pipes in the continuous moving process of the inner groove forming pipe;
step three, under the action of a fourth hydraulic cylinder, the forming box body and the embedding mechanism simultaneously move downwards, the magnesium-carbon brick blank is separated from the forming box body, the embedding mechanism moves downwards to the position right in front of the magnesium-carbon brick blank, and the embedding mechanism pushes the heat-insulating sealing plate coated with the blank mud into a heat-insulating sealing groove in the magnesium-carbon brick blank;
step four, baking the magnesia carbon brick blank at the temperature of 200-250 ℃ for 10-14h, wherein the blank mud on the heat insulation sealing plate and the magnesia carbon brick blank are baked into a whole, and the heat insulation sealing groove is completely sealed;
and step five, taking out the fired magnesia carbon brick blank, placing the fired magnesia carbon brick blank on a rotating device, inserting a water pipeline into the water through hole, simultaneously injecting proper water into each hollow circular groove through the water pipeline, taking out the water pipeline, plugging the water through hole with a sealing plug, rotating the magnesia carbon brick blank at a constant speed under the action of the rotating device so as to enable the heat insulation expanding agent in each hollow circular groove to be fully contacted with the water, and filling the whole hollow circular groove after the heat insulation expanding agent is expanded.
As a further scheme of the invention, the forming box body is sleeved on the vertical part of the convex blanking seat, two fourth hydraulic cylinders are arranged in a pair of grooves formed in the left side and the right side of the top surface of the bottom plate part of the convex blanking seat, and piston rods of the fourth hydraulic cylinders are connected with a horizontal support plate arranged below the outer side wall of the forming box body.
As a further scheme of the invention, the convex blanking seat is slidably arranged on a T-shaped guide rail arranged on the top surface of the bottom plate, a motor mounting plate and a support seat are respectively arranged on the top surface of the bottom plate and positioned in front of and behind the T-shaped guide rail, a moving screw rod is rotatably arranged between the front side walls of the motor mounting plate and the support seat, the convex blanking seat is in threaded connection with the moving screw rod, and a moving motor for driving the moving screw rod to rotate is arranged on the outer side wall of the motor mounting plate.
As a further scheme of the invention, the double-head hydraulic cylinder is arranged in the middle of the supporting seat, a pair of mutually symmetrical extrusion arms is fixed on two piston rods of the double-head hydraulic cylinder, a guide column is inserted at the front end of each extrusion arm, a pair of pressing blocks is fixed on the opposite surfaces of the two guide columns, and an extrusion spring is connected between each pressing block and the inner wall of the corresponding extrusion arm on one side.
As a further scheme of the invention, the cover plate is fixed on the front side wall of the support seat, a top mounting plate is fixed above the cover plate, the second hydraulic cylinder is mounted on the top surface of the top mounting plate, a piston rod of the second hydraulic cylinder penetrates through the top mounting plate and is connected with a water steel column, a raw material through groove is formed in the front end of the top surface of the top mounting plate, and a feeding channel is formed in the bottom surface of the raw material through groove.
As a further scheme of the invention, the embedding mechanism comprises a lifting plate seat inserted at the front end of the top mounting plate, a reset convex plate is arranged at the top of the rear side wall of the lifting plate seat, a reset pressure spring is connected between the bottom surface of the reset convex plate and the top surface of the top mounting plate, a plurality of placing grooves for placing heat-insulation sealing plates are arranged on the rear side wall of the lifting plate seat below the top mounting plate, a plurality of embedding cylinders are arranged on the rear side wall of the lifting plate seat, a piston rod of each embedding cylinder extends into the placing groove on the corresponding side and is connected with a push plate, a pair of transmission frames are arranged on the left side wall and the right side wall of the lifting plate seat, a pair of transmission pressing plates is arranged above the left side outer side wall and the right outer side wall of the forming box body, and bottom plates of the two transmission frames are positioned under the two transmission pressing plates.
As a further scheme of the invention, a pair of extrusion plates is movably arranged on the left side and the right side in the box body of the forming box body, a longitudinal clamping groove which penetrates through the top of the forming box body in the front-back direction and is matched with the sealing cover plate is arranged on the top of the forming box body, a pair of side through grooves are arranged on the left side and the right side of the forming box body, a plurality of connecting bulges are formed on the inner wall of each side through groove, and a reset tension spring is connected between each connecting bulge and the outer side wall of the extrusion plate on the corresponding side;
the forming device comprises a forming box body, a plurality of sealing groove forming pipes, a plurality of bending frames, a plurality of sealing groove forming pipes, a plurality of internal groove forming pipes, a plurality of rotating motors, a plurality of bending frames and a plurality of long gears, wherein the sealing groove forming pipes are inserted into a front side plate of the forming box body;
the front end of each inner groove forming tube penetrates through the push-pull connecting plate and is rotatably arranged in the push-pull connecting plate, an annular bulge is formed on the outer circular wall of the front end of each inner groove forming tube and is clamped in an annular clamping groove formed in the inner wall of a circular through hole of the push-pull connecting plate, the third hydraulic cylinder is installed on the outer wall of the front side plate of the bending frame, and a piston rod of the third hydraulic cylinder penetrates through the front side plate of the bending frame and is connected with the push-pull connecting plate;
the front side plate of the bending frame is inserted with a plurality of material pushing rods corresponding to the inner groove forming tubes, the rear ends of the material pushing rods are provided with pistons, the rear ends of the material pushing rods are jointly connected with a fixed mounting plate, the outer wall of the fixed mounting plate is provided with a handle, the front end of each material pushing rod is provided with a limiting hole which penetrates through the front end and the rear end of the material pushing rod, and the top surface of the front side plate of the bending frame is provided with a pin shaft jack corresponding to the limiting hole.
According to a further scheme of the invention, a water injection communication hole which is vertically communicated and corresponds to the water steel column is formed in the rear end wall body of the inner groove forming pipe, a separating sleeve is arranged in the water injection communication hole, a material baffle plate is arranged in the inner portion of the inner groove forming pipe and in front of the separating sleeve, feeding small holes are formed in the wall bodies on the left side and the right side of the material baffle plate, a movable pressure spring is connected between the material baffle plate and the separating sleeve, the material discharging pipe is inserted into the rear end plate of the inner groove forming pipe, a plurality of discharging side through grooves are formed in the outer circular wall body of the material discharging pipe, the material discharging pipe is connected with the material baffle plate through connecting rods, and the spraying thin pipe is clamped in a sealing clamping groove formed in the outer wall of the rear end plate of the inner groove forming pipe.
The invention has the beneficial effects that:
1. the brick blank is pressed by two times of extrusion, the density of the brick blank is loose during the first-time brick blank forming, a water-through steel column is easy to insert into each inner groove forming pipe, and a heat-insulating sealing groove is easy to press on the surface of the brick blank by the sealing groove forming pipe;
2. in the process of pressing the magnesia carbon brick blank, considering that the surface of the inner groove forming pipe can be bonded with magnesia carbon brick raw materials to a certain degree, the formed hollow circular groove can be damaged when the inner groove forming pipe is pulled out, so that the inner groove forming pipe slowly rotates twice, the surface of the inner groove forming pipe is prevented from being bonded with the magnesia carbon brick raw materials, the integrity of the hollow circular groove is ensured, and the production quality of the magnesia carbon brick is improved;
3. by arranging the forming box body capable of moving up and down, not only is the discharging of the brick blank facilitated, but also the lifting of the embedding mechanism can be driven, so that the embedding mechanism synchronously moves right ahead of the brick blank, the embedding of the heat insulation sealing plate is facilitated, and the production efficiency is improved;
4. the elastic movable baffle plate is arranged in the inner groove forming pipe, so that the heat insulation expanding agent can enter the discharge pipe and can be pushed to displace by an extrusion discharge mode, the heat insulation expanding agent can be sprayed out of the spraying tubule, the uniform smearing of the whole hollow circular groove is realized, and the spraying tubule is clamped in the rear end plate of the inner groove forming pipe, so that the shape of the hollow circular groove is ensured, and the blockage of the spraying tubule is prevented;
5. the partition sleeve is arranged in the inner groove forming pipe, so that the magnesia carbon brick raw material can be prevented from entering the inner groove forming pipe, and the cleanness of the inside of the inner groove forming pipe is ensured;
6. the magnesia carbon brick manufactured by the invention is filled with the heat insulation expanding agent, has good heat insulation effect, can ensure that the temperature in the kiln can not be lost, and has small internal stress when being baked at high temperature, so that the magnesia carbon brick is not easy to crack.
Drawings
The invention is described in further detail below with reference to the figures and specific embodiments.
FIG. 1 is a schematic structural diagram of an apparatus for producing magnesia carbon bricks;
FIG. 2 is a bottom three-dimensional view of the magnesia carbon brick producing apparatus;
FIG. 3 is a schematic structural view of a molding mechanism;
FIG. 4 is a three-dimensional perspective view of another perspective of the forming mechanism;
FIG. 5 is a schematic view of the inner groove forming tube;
FIG. 6 is a schematic view showing the inner structure of the inner groove forming tube;
FIG. 7 is a three-dimensional view of the inner groove forming tube from another perspective;
FIG. 8 is a schematic structural view of a magnesia carbon brick;
FIG. 9 is a schematic view of the internal structure of a magnesia carbon brick;
FIG. 10 is a left side view of the apparatus for producing magnesia carbon bricks;
FIG. 11 is a front view of an apparatus for producing magnesia carbon bricks.
Reference numerals: 1. a base plate; 2. a double-headed hydraulic cylinder; 3. an embedding mechanism; 4. a molding mechanism; 5. a brick body; 11. a motor mounting plate; 12. a moving motor; 13. a supporting seat; 14. moving the screw rod; 15. a T-shaped guide rail; 16. a convex blanking base; 17. a fourth hydraulic cylinder, 18, a top mounting plate; 19. sealing the cover plate; 21. squeezing the arms; 22. a guide post; 23. briquetting; 24. a compression spring; 25. a second hydraulic cylinder; 26. a water-through steel column; 31. a lifting plate seat; 32. embedding a cylinder; 33. a transmission frame; 34. resetting the convex plate; 35. resetting the pressure spring; 41. forming a box body; 42. a pressing plate; 43. forming a pipe by a sealing groove; 44. a first hydraulic cylinder; 45. forming a tube with an inner groove; 46. a bending frame; 47. a rotating electric machine; 48. a third hydraulic cylinder; 49. a material pushing rod; 51. a water through hole; 52. a heat insulation sealing groove; 53. a heat-insulating sealing plate; 54. a hollow circular groove; 181. a raw material through groove; 182. a feed channel; 191. a small through hole; 311. a placement groove; 411. a side through groove; 412. feeding and discharging the materials into and out of the material tank; 413. a longitudinal slot; 414. a connecting projection; 415. a return tension spring; 416. a horizontal support plate; 417. a transmission pressing plate; 431. a vertical connecting plate; 451. a transmission gear; 452. a water injection communicating hole; 453. an annular projection; 454. a discharge pipe; 455. sealing the clamping groove; 456. a striker plate; 457. a separation sleeve; 458. a connecting rod; 459. moving the pressure spring; 461. a pin shaft jack; 471. a long gear; 481. pushing and pulling the connecting plate; 491. a piston; 492. a limiting hole; 493. fixing the mounting plate; 494. a handle; 4541. spraying thin pipes; 4542. a discharge side through groove; 4561. a feed aperture.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The cracking-proof magnesia carbon brick with good heat insulation effect comprises a brick body 5, wherein a plurality of heat insulation sealing grooves 52 which are vertically distributed are arranged on the fire facing surface of the brick body 5, a hollow round groove 54 which extends inwards is arranged on the rear side surface of each heat insulation sealing groove 52, a heat insulation expanding agent is coated on the inner wall of each hollow round groove 54, a heat insulation sealing plate 53 is clamped in each heat insulation sealing groove 52, and the rear end of the top surface of the brick body 5 is provided with a water through hole 51 which penetrates through all the hollow round grooves 54;
blank mud is coated on the outer surface of the heat insulation sealing plate 53;
the content of the polymer water-absorbing material in the heat insulation expanding agent is 0.5-1 percent;
the production process of the anti-cracking magnesia carbon brick with good heat insulation effect comprises the following steps:
firstly, putting a magnesia carbon brick raw material into a forming box body 41 in a forming mechanism 4 from an external stirring device through a feeding channel 182, wherein the forming box body 41 is internally provided with a plurality of inner groove forming pipes 45 and a plurality of sealing groove forming pipes 43, an extrusion plate 42 in the forming box body 41 is inserted into a water steel column 26 after the first elastic extrusion, and then the extrusion plate 42 is subjected to rigid extrusion to form the magnesia carbon brick raw material into a magnesia carbon brick blank with a heat insulation sealing groove 52, a hollow circular groove 54 and a water through hole 51;
step two, after the water-through steel column 26 is pulled out, firstly injecting a proper heat insulation expanding agent into the inner groove forming pipe 45 through an injection device, automatically and uniformly spraying the heat insulation expanding agent inside the inner groove forming pipe 45 on the inner wall of the hollow circular groove 54 when the inner groove forming pipe 45 moves outwards to be separated from the magnesia carbon brick blank, and then moving the sealing groove forming pipe 43 outwards to be separated from the magnesia carbon brick blank after the inner groove forming pipe 45 is separated from the magnesia carbon brick blank;
step three, under the action of the fourth hydraulic cylinder 17, the forming box body 41 and the embedding mechanism 3 move downwards simultaneously, the magnesia carbon brick blank is separated from the forming box body 41, the embedding mechanism 3 moves downwards to the front of the magnesia carbon brick blank, and the embedding mechanism 3 pushes the heat insulation sealing plate 53 coated with the blank mud into a heat insulation sealing groove 52 in the magnesia carbon brick blank;
step four, baking the magnesia carbon brick blank for 10-14h at the temperature of 200-250 ℃, wherein the blank mud on the heat insulation sealing plate 53 and the magnesia carbon brick blank are baked into a whole, and the heat insulation sealing groove 52 is completely sealed;
and step five, taking out the fired magnesia carbon brick blank, placing the fired magnesia carbon brick blank on a rotating device, inserting a water pipeline into the water through hole 51, simultaneously injecting proper water into each hollow circular groove 54 through the water pipeline, taking out the water pipeline, plugging the water through hole 51 by using a sealing plug, rotating the magnesia carbon brick blank at a constant speed under the action of the rotating device so as to enable the heat insulation expanding agent in each hollow circular groove 54 to be fully contacted with the water, and filling the whole hollow circular groove 54 after the heat insulation expanding agent expands.
As shown in fig. 1 to 11, the forming box 41 is sleeved on a vertical portion of the convex blanking base 16, two fourth hydraulic cylinders 17 are disposed in a pair of grooves disposed on the left and right sides of the top surface of the bottom plate portion of the convex blanking base 16, piston rods of the fourth hydraulic cylinders 17 are connected with a horizontal support plate 416 disposed below the outer side wall of the forming box 41, the convex blanking base 16 is slidably disposed on a T-shaped guide rail 15 disposed on the top surface of the bottom plate 1, a motor mounting plate 11 and a support base 13 are disposed on the top surface of the bottom plate 1 and in front of and behind the T-shaped guide rail 15, a movable screw 14 is rotatably disposed between the motor mounting plate 11 and the front side wall of the support base 13, the convex blanking base 16 is screwed on the movable screw 14, and a movable motor 12 for driving the movable screw 14 to rotate is disposed on the outer side wall of the motor mounting plate 11; the sealing cover plate 19 is fixed on the front side wall of the supporting seat 13, the top mounting plate 18 is fixed above the sealing cover plate 19, the second hydraulic cylinder 25 is installed on the top surface of the top mounting plate 18, a piston rod of the second hydraulic cylinder 25 penetrates through the top mounting plate 18 and is connected with a water steel passing column 26, the front end of the top surface of the top mounting plate 18 is provided with a raw material through groove 181, and a feeding channel 182 is arranged on the bottom surface of the raw material through groove 181.
The double-head hydraulic cylinder 2 is arranged in the middle of the supporting seat 13, a pair of mutually symmetrical extrusion arms 21 is fixed on two piston rods of the double-head hydraulic cylinder 2, a guide post 22 is inserted at the front end of each extrusion arm 21, a pair of pressing blocks 23 is fixed on the opposite surfaces of the two guide posts 22, and an extrusion spring 24 is connected between each pressing block 23 and the inner wall of the corresponding extrusion arm 21 on one side; the double-end hydraulic cylinder 2 enables the extrusion spring 24 to push the extrusion plate 42 in the first extrusion, the pressure applied to the extrusion plate 42 is not enough to enable the magnesia carbon brick raw material to form a firm brick blank, the brick blank density is loose, so that the water-through steel column is more easily inserted into each inner groove forming pipe, and the sealing groove forming pipe is easily pressed with a heat insulation sealing groove on the surface of the brick blank.
The embedding mechanism 3 comprises a lifting plate seat 31 inserted at the front end of the top mounting plate 18, a reset convex plate 34 is arranged at the top of the rear side wall of the lifting plate seat 31, a reset pressure spring 35 is connected between the bottom surface of the reset convex plate 34 and the top surface of the top mounting plate 18, a plurality of placing grooves 311 for placing heat-insulating sealing plates 53 are arranged on the rear side wall of the lifting plate seat 31 below the top mounting plate 18, a plurality of embedding cylinders 32 are arranged on the rear side wall of the lifting plate seat 31, a piston rod of each embedding cylinder 32 extends into the placing groove 311 at the corresponding side and is connected with a push plate, a pair of transmission frames 33 are arranged on the left side wall and the right side wall of the lifting plate seat 31, a pair of transmission pressing plates 417 are arranged above the left side outer side wall and the right side outer side wall of the forming box body 41, and the bottom plates of the two transmission frames 33 are positioned right below the two transmission pressing plates 417; when the forming box body 41 moves downwards under the action of the fourth hydraulic cylinder 17, the magnesium carbon brick blank formed by pressing is not wrapped by the forming box body 41 any more, the forming box body 41 just pulls the lifting plate seat 31 to move downwards, the placing groove 311 is made to face the heat insulation sealing groove 52 on the front side wall of the magnesium carbon brick blank at the moment, the piston rod of the embedded cylinder 32 extends out to push the heat insulation sealing plate 53 coated with the blank mud into the heat insulation sealing groove 52, and therefore automatic sealing is completed.
A pair of extrusion plates 42 is movably arranged on the left side and the right side in the box body of the forming box body 41, a longitudinal clamping groove 413 which penetrates through the top of the forming box body 41 in the front-back direction and is matched with the cover plate 19 is arranged on the top of the forming box body 41, a pair of side through grooves 411 are arranged on the left side and the right side of the forming box body 41, a plurality of connecting protrusions 414 are formed on the inner wall of each side through groove 411, and a reset tension spring 415 is connected between each connecting protrusion 414 and the outer side wall of the corresponding extrusion plate 42 on one side; the sealing groove forming tubes 43 are inserted in the front side plate of the forming box body 41, the inner groove forming tubes 45 are inserted in the sealing groove forming tubes 43, a plurality of the sealing groove forming tubes 43 are vertically distributed, and a vertical connecting plate 431 is arranged between the outer walls of two adjacent sealing groove forming tubes 43, the first hydraulic cylinder 44 is arranged in the front side plate of the forming box body 41 and is connected with the piston rod of the first hydraulic cylinder 44 and the vertical connecting plate 431 at the corresponding side, the outer circular wall at the front end of each inner groove forming pipe 45 is provided with a transmission gear 451, the two adjacent transmission gears 451 are mutually meshed, a rotating motor 47 is arranged below the front side wall of the forming box body 41, a bending frame 46 is arranged below the rotating motor 47, a long gear 471 is arranged on the output shaft of the rotating motor 47, the long gear 471 is meshed with the transmission gear 451 at the lowest end, and the other shaft end of the long gear 471 is rotationally arranged on the front side plate of the bending frame 46; the front end of each internal groove forming tube 45 penetrates through the push-pull connecting plate 481 and is rotatably arranged in the push-pull connecting plate 481, an annular bulge 453 is formed on the outer circular wall of the front end of each internal groove forming tube 45, the annular bulge 453 is clamped in an annular clamping groove formed in the inner wall of a circular through hole of the push-pull connecting plate 481, the third hydraulic cylinder 48 is installed on the outer wall of the front side plate of the bending frame 46, and the piston rod of the third hydraulic cylinder 48 penetrates through the front side plate of the bending frame 46 and is connected with the push-pull connecting plate 481; in the pressing process of the magnesia carbon brick blank, the surface of the inner groove forming pipe 45 is bonded with magnesia carbon brick raw materials to a certain degree, the inner groove forming pipe 45 can damage the formed hollow circular groove 54 when being pulled out, and therefore the surface of the inner groove forming pipe 45 can be prevented from being bonded with the magnesia carbon brick raw materials by matching with the slow rotation of the inner groove forming pipe 45 when the brick blank is pressed and formed, the integrity of the hollow circular groove 54 is ensured, and the production quality of the magnesia carbon brick is improved.
A plurality of material pushing rods 49 corresponding to the inner groove forming pipe 45 are inserted into the front side plate of the bending frame 46, a piston 491 is arranged at the rear end of each material pushing rod 49, the rear ends of the material pushing rods 49 are jointly connected with a fixed mounting plate 493, a handle 494 is arranged on the outer wall of the fixed mounting plate 493, a limiting hole 492 penetrating through the front end of each material pushing rod 49 up and down is arranged at the front end of each material pushing rod 49, and a pin shaft inserting hole 461 corresponding to the limiting hole 492 is arranged on the top surface of the front side plate of the bending frame 46.
A water injection communication hole 452 which is vertically communicated and corresponds to the water steel column 26 is formed in the rear end wall body of the inner groove forming pipe 45, a separating sleeve 457 is arranged in the water injection communication hole 452, a baffle plate 456 is arranged in the inner part of the inner groove forming pipe 45 and positioned in front of the separating sleeve 457, feeding small holes 4561 are formed in the left side wall body and the right side wall body of the baffle plate 456, a movable pressure spring 459 is connected between the baffle plate 456 and the separating sleeve 457, the discharge pipe 454 is inserted in the rear end plate of the inner groove forming pipe 45, a plurality of discharge side through grooves 4542 are formed in the outer circumferential wall body of the discharge pipe 454, the discharge pipe 454 is connected with the baffle plate 456 through a connecting rod 458, and the spraying tubule 4541 is clamped in a sealing clamping groove 455 formed in the outer wall of the rear end plate of the inner groove forming pipe 45; the spraying tubule 4541 is clamped in the rear end plate of the inner groove forming tube 45, so as to ensure the shape of the hollow circular groove and prevent the spraying tubule from being blocked.
The method for forming the magnesia carbon brick blank comprises the following steps: the magnesia carbon brick raw material enters from the feeding and discharging groove 412 on the top surface of the forming box body 41, the forming box body 41 moves backwards to enable the cover sealing plate 19 to be inserted into the top of the forming box body 41 and seal the feeding and discharging groove 412, and two movable extrusion plates 42 positioned on the left side and the right side of the forming box body 41 are mutually extruded twice in different degrees under the action of the double-head hydraulic cylinder 2; the first extrusion of the extrusion plate 42 is elastic extrusion, the extrusion time is 1s, the forming pressure is 50-80MPa, the density of the primarily formed magnesia carbon brick blank is loose, only a hollow round groove 54 is arranged in the interior of the primarily formed magnesia carbon brick blank, under the action of the first hydraulic cylinder 44, the sealing groove forming pipe 43 extends into the forming box 41 from the front side wall body of the forming box 41 so as to press and form a heat insulation sealing groove 52 on the front side surface of the magnesia carbon brick blank, and under the action of the second hydraulic cylinder 25, the water steel column 26 is inserted into the magnesia carbon brick blank from a small through hole 191 on the cover plate 19 and penetrates through the plurality of inner groove forming pipes 45; the second extrusion of the extrusion plate 42 is rigid extrusion, the pressing time is 3s, the forming pressure is 200-.
The method for uniformly spraying the heat insulation expanding agent on the inner wall of the hollow circular groove 54 comprises the following steps: the inner groove forming pipe 45 is sealed by a piston 491 after injecting proper heat insulation expanding agent, the piston 491 pushes the heat insulation expanding agent inwards, a discharge pipe 454 is arranged in the rear end plate of the inner groove forming pipe 45, a plurality of evenly distributed spraying tubules 4541 are arranged on the wall body at the outer end of the discharge pipe 454, under the action of the third hydraulic cylinder 48, the inner groove forming pipe 45 moves outwards to separate from the magnesia carbon brick blank, at this time, because the piston 491 is fixed, therefore, the thermal insulation expanding agent in the inner groove forming pipe 45 is extruded to make the material baffle 456 move backwards, at the same time, the material discharging pipe 454 also moves backwards, the spraying tubule 4541 extends out of the sealing clamping groove 455, meanwhile, the thermal insulation expanding agent enters from the feeding small holes 4561 on both sides of the material baffle 456 and flows to the discharging side through groove 4542, finally is sprayed out from the spraying tubule 4541, during the process that the inner groove forming pipe 45 continuously moves, the heat insulation expanding agent is uniformly sprayed on the inner wall of the hollow circular groove 54 through the spraying tubule 4541.
In addition, the heat insulation sealing groove 52 is formed on the surface of the magnesia carbon brick in a pressing mode, so that the notch edge strength of the heat insulation sealing groove 52 is ensured to be more firm and inherent, and the shape of the notch is not damaged when the sealing groove forming pipe 43 is pulled out; in addition, the reason why the water steel post 26 is not inserted from the beginning is that the inner groove forming pipe 45 needs to be rotated continuously when the brick blank is formed primarily, and the reason why the inner groove forming pipe 45 is rotated twice is that the inner groove forming pipe 45 is firstly contacted with the magnesia carbon brick raw material when the brick blank is formed by the first elastic extrusion, the magnesia carbon brick raw material is easily and completely bonded to the surface of the inner groove forming pipe 45, and the reason why the second rigid extrusion is because the density of the formed brick blank is strong, the magnesia carbon brick raw material attached to the surface of the inner groove forming pipe 45 is firmly bonded to the surrounding magnesia carbon brick raw material by the extrusion plate 42, and the surface shape of the hollow circular groove 54 is also damaged by the inner groove forming pipe 45 when the inner groove forming pipe 45 is pulled out.
The pin insertion hole 461 is used for inserting a pin to fix the material pushing rod 49, and the material pushing rod 49 is firstly pulled open when the heat insulation expanding agent is added to the inner groove forming pipe 45.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (10)
1. The utility model provides a thermal-insulated effectual anti-cracking magnesia carbon brick, includes the brick body (5), its characterized in that: a plurality of heat insulation sealing grooves (52) which are vertically distributed are arranged on the fire facing surface of the brick body (5), a hollow round groove (54) which extends inwards is arranged on the rear side surface of each heat insulation sealing groove (52), a heat insulation expanding agent is coated on the inner wall of each hollow round groove (54), a heat insulation sealing plate (53) is clamped in each heat insulation sealing groove (52), and a water through hole (51) which penetrates through all the hollow round grooves (54) is formed in the rear end of the top surface of the brick body (5);
blank mud is coated on the outer surface of the heat insulation sealing plate (53);
the content of the polymer water-absorbing material in the heat insulation expanding agent is 0.5-1 percent;
the production process of the anti-cracking magnesia carbon brick with good heat insulation effect comprises the following steps:
step one, putting a magnesia carbon brick raw material into a forming box body (41) in a forming mechanism (4), wherein a plurality of inner groove forming pipes (45) and a plurality of sealing groove forming pipes (43) are arranged in the forming box body (41), an extrusion plate (42) in the forming box body (41) is inserted into a water steel column (26) after first elastic extrusion, and then the extrusion plate (42) is subjected to rigid extrusion to form the magnesia carbon brick raw material into a magnesia carbon brick blank with a heat insulation sealing groove (52), a hollow circular groove (54) and a water through hole (51);
the method for forming the magnesia carbon brick blank comprises the following steps:
the forming box body (41) is placed with magnesia carbon brick raw materials, moves backwards and is sealed through a sealing cover plate (19), and the extrusion plate (42) is extruded mutually twice in different degrees under the action of the double-head hydraulic cylinder (2); the first extrusion is elastic extrusion, the extrusion time is 1s, the forming pressure is 50-80MPa, a sealing groove forming pipe (43) is pressed on the front side surface of the magnesia carbon brick blank to form a heat insulation sealing groove (52), and a water steel column (26) is inserted into the magnesia carbon brick blank and penetrates through a plurality of inner groove forming pipes (45); the second extrusion is rigid extrusion, the pressing time is 3s, and the molding pressure is 200-250 MPa;
step two, after the water steel column (26) is pulled out, the inner groove forming pipe (45) is used for uniformly spraying heat insulation expanding agent on the inner wall of the hollow circular groove (54);
the method for uniformly spraying the heat-insulating expanding agent on the inner wall of the hollow circular groove (54) comprises the following steps:
a plurality of evenly distributed spraying tubules (4541) are arranged in the rear end plate of the inner groove forming pipe (45), and when the inner groove forming pipe (45) moves outwards, the inner piston (491) extrudes the heat insulation expanding agent and sprays out of the spraying tubules (4541);
step three, the forming box body (41) and the embedding mechanism (3) move downwards simultaneously, the magnesia carbon brick blank is separated from the forming box body (41), the embedding mechanism (3) moves downwards to the position right in front of the magnesia carbon brick blank and pushes the heat insulation sealing plate (53) coated with blank mud into the heat insulation sealing groove (52);
step four, baking the magnesia carbon brick blank for 10-14h at the temperature of 200-250 ℃, wherein the blank mud on the heat insulation sealing plate (53) and the magnesia carbon brick blank are baked into a whole, and the heat insulation sealing groove (52) is completely sealed;
inserting a water pipeline into the water through holes (51), simultaneously injecting water into each hollow circular groove (54) through the water pipeline, plugging the water pipeline with a sealing plug after the water pipeline is completed, and filling the hollow circular grooves (54) after the heat insulation expanding agent in each hollow circular groove (54) is contacted with the water and expands.
2. The anti-cracking magnesia carbon brick with good heat insulation effect according to claim 1, characterized in that: the vertical portion of convex unloading seat (16) is established to shaping box body (41) cover, is equipped with two fourth pneumatic cylinders (17) in the pair of recess that the bottom plate portion top surface left and right sides of convex unloading seat (16) had, the horizontal brace board (416) that the piston rod of fourth pneumatic cylinder (17) and shaping box body (41) lateral wall below were equipped with are connected.
3. The anti-cracking magnesia carbon brick with good heat insulation effect according to claim 2, characterized in that: convex unloading seat (16) slide to set up on T shape guide rail (15) that the top surface of bottom plate (1) was equipped with, the top surface of bottom plate (1) just is located the front and back of T shape guide rail (15) and is equipped with motor mounting panel (11) and supporting seat (13) respectively, rotates between the preceding lateral wall of motor mounting panel (11) and supporting seat (13) and is equipped with removal lead screw (14), convex unloading seat (16) spiro union is on removing lead screw (14), be equipped with drive removal lead screw (14) pivoted moving motor (12) on the lateral wall of motor mounting panel (11).
4. The anti-cracking magnesia carbon brick with good heat insulation effect according to claim 3, characterized in that: double-end pneumatic cylinder (2) are installed at the middle part of supporting seat (13), are fixed with a pair of extrusion arm (21) of mutual symmetry on two piston rods of double-end pneumatic cylinder (2), and the front end of extrusion arm (21) is inserted and is equipped with guide post (22), is fixed with a pair of briquetting (23) on the opposite face of two guide post (22), is connected with extrusion spring (24) between the inner wall of extrusion arm (21) of every briquetting (23) and corresponding one side.
5. The anti-cracking magnesia carbon brick with good heat insulation effect according to claim 3, characterized in that: the sealing cover plate (19) is fixed on the front side wall of the supporting seat (13) and a top mounting plate (18) is fixed above the sealing cover plate (19), the second hydraulic cylinder (25) is installed on the top surface of the top mounting plate (18), a piston rod of the second hydraulic cylinder (25) penetrates through the top mounting plate (18) and is connected with a water passing steel column (26), the water passing steel column (26) faces a small through hole (191) in the sealing cover plate (19), the front end of the top surface of the top mounting plate (18) is provided with a raw material through groove (181), and a feeding channel (182) is arranged on the bottom surface of the raw material through groove (181).
6. The anti-cracking magnesia carbon brick with good heat insulation effect according to claim 5, characterized in that: the embedding mechanism (3) comprises a lifting plate seat (31) inserted at the front end of the top mounting plate (18), a reset convex plate (34) is arranged at the top of the rear side wall of the lifting plate seat (31), a reset pressure spring (35) is connected between the bottom surface of the reset convex plate (34) and the top surface of the top mounting plate (18), a plurality of placing grooves (311) for placing heat-insulating sealing plates (53) are arranged on the rear side wall of the lifting plate seat (31) below the top mounting plate (18), a plurality of embedded cylinders (32) are arranged on the rear side wall of the lifting plate seat (31), the piston rod of each embedded cylinder (32) extends into the placing groove (311) on one corresponding side and is connected with a push plate, a pair of transmission frames (33) are arranged on the left side wall and the right side wall of the lifting plate seat (31), a pair of transmission pressing plates (417) are arranged above the left side wall and the right side wall of the forming box body (41), and bottom plates of the two transmission frames (33) are located under the two transmission pressing plates (417).
7. The anti-cracking magnesia carbon brick with good heat insulation effect according to claim 1, characterized in that: a pair of extrusion plates (42) is movably arranged on the left side and the right side in the forming box body (41), a longitudinal clamping groove (413) which penetrates through the forming box body (41) from front to back and is matched with the sealing cover plate (19) is formed in the top of the forming box body (41), a pair of side through grooves (411) are formed in the left outer side wall and the right outer side wall of the forming box body (41), a plurality of connecting protrusions (414) are formed on the inner wall of each side through groove (411), and a reset tension spring (415) is connected between each connecting protrusion (414) and the outer side wall of the corresponding extrusion plate (42) on one side;
the sealing groove forming pipes (43) are inserted in the front side plate of the forming box body (41), the inner groove forming pipes (45) are inserted in the sealing groove forming pipes (43), the sealing groove forming pipes (43) are vertically distributed, a vertical connecting plate (431) is arranged between the outer walls of every two adjacent sealing groove forming pipes (43), the first hydraulic cylinder (44) is positioned in the front side plate of the forming box body (41) and connected with the vertical connecting plate (431) on one side of the piston rod of the first hydraulic cylinder (44) and the corresponding vertical connecting plate (431), a transmission gear (451) is arranged on the outer circular wall of the front end of each inner groove forming pipe (45), the two adjacent transmission gears (451) are mutually meshed, a rotating motor (47) is arranged below the front side wall of the forming box body (41), a bending frame (46) is arranged below the rotating motor (47), and a long gear (471) is arranged on the output shaft of the rotating motor (47), the long gear (471) is meshed with the transmission gear (451) at the lowest end, and the other shaft end of the long gear (471) is rotatably arranged on the front side plate of the bending frame (46);
the front end of each inner groove forming tube (45) penetrates through the push-pull connecting plate (481) and is rotatably arranged in the push-pull connecting plate (481), an annular bulge (453) is formed on the outer circular wall of the front end of each inner groove forming tube (45), the annular bulge (453) is clamped in an annular clamping groove formed in the inner wall of a circular through hole of the push-pull connecting plate (481), the third hydraulic cylinder (48) is arranged on the outer wall of the front side plate of the bending frame (46), and a piston rod of the third hydraulic cylinder (48) penetrates through the front side plate of the bending frame (46) and is connected with the push-pull connecting plate (481);
the material pushing device is characterized in that a plurality of material pushing rods (49) corresponding to the inner groove forming pipes (45) are inserted into a front side plate of the bending frame (46), pistons (491) are arranged at the rear ends of the material pushing rods (49), the rear ends of the material pushing rods (49) are jointly connected with a fixed mounting plate (493), a handle (494) is arranged on the outer wall of the fixed mounting plate (493), limiting holes (492) penetrating through the front end of each material pushing rod (49) vertically are formed in the front end of each material pushing rod (49), and pin shaft insertion holes (461) corresponding to the limiting holes (492) are formed in the top surface of the front side plate of the bending frame (46).
8. The anti-cracking magnesia carbon brick with good heat insulation effect according to claim 1, characterized in that: a water injection communication hole (452) which is communicated up and down and corresponds to the water steel column (26) is arranged on the rear end wall body of the inner groove forming pipe (45), a separation sleeve (457) is arranged in the water injection communication hole (452), a striker plate (456) is arranged in the inner groove forming tube (45) and at the front side of the separating sleeve (457), small feeding holes (4561) are arranged on the wall bodies at the left side and the right side of the striker plate (456), a movable pressure spring (459) is connected between the striker plate (456) and the separating sleeve (457), the discharge pipe (454) is inserted in the rear end plate of the inner groove forming pipe (45), the outer circular wall body of the discharge pipe (454) is provided with a plurality of discharge side through grooves (4542), the discharge pipe (454) is connected with the striker plate (456) through a connecting rod (458), the spraying slim tube (4541) is clamped in a sealing clamping groove (455) formed in the outer wall of the rear end plate of the inner groove forming tube (45).
9. The manufacturing process of the anti-cracking magnesia carbon brick with good heat insulation effect according to claim 1, is characterized by comprising the following steps:
firstly, putting a magnesia carbon brick raw material into a forming box body (41) in a forming mechanism (4) from an external stirring device through a feeding channel (182), wherein a plurality of inner groove forming pipes (45) and a plurality of sealing groove forming pipes (43) are arranged in the forming box body (41), an extrusion plate (42) in the forming box body (41) is inserted into a water-through steel column (26) after first elastic extrusion, and then the extrusion plate (42) is subjected to rigid extrusion to form the magnesia carbon brick raw material into a magnesia carbon brick blank with a heat insulation sealing groove (52), a hollow circular groove (54) and a water-through hole (51);
step two, after the water steel column (26) is pulled out, firstly, injecting a proper heat insulation expanding agent into the inner groove forming pipe (45) through an injection device, automatically and uniformly spraying the heat insulation expanding agent in the inner groove forming pipe (45) on the inner wall of the hollow circular groove (54) when the inner groove forming pipe (45) moves outwards to be separated from the magnesia carbon brick blank, and then, moving the sealing groove forming pipe (43) outwards to be separated from the magnesia carbon brick blank after the inner groove forming pipe (45) is separated from the magnesia carbon brick blank;
step three, under the action of a fourth hydraulic cylinder (17), the forming box body (41) and the embedding mechanism (3) move downwards simultaneously, the magnesia carbon brick blank is separated from the forming box body (41), the embedding mechanism (3) moves downwards to the front of the magnesia carbon brick blank, and the embedding mechanism (3) pushes the heat insulation sealing plate (53) coated with the blank mud into a heat insulation sealing groove (52) in the magnesia carbon brick blank;
step four, baking the magnesia carbon brick blank for 10-14h at the temperature of 200-250 ℃, wherein the blank mud on the heat insulation sealing plate (53) and the magnesia carbon brick blank are baked into a whole, and the heat insulation sealing groove (52) is completely sealed;
and step five, taking out the fired magnesia carbon brick blank, placing the fired magnesia carbon brick blank on a rotating device, inserting a water pipeline into the water through holes (51), simultaneously injecting proper water into each hollow circular groove (54) through the water pipeline, taking out the water pipeline, plugging the water through holes (51) by using sealing plugs, rotating the magnesia carbon brick blank at a constant speed under the action of the rotating device so as to enable the heat insulation expanding agent in each hollow circular groove (54) to be fully contacted with water, and filling the whole hollow circular groove (54) after the heat insulation expanding agent is expanded.
10. The manufacturing process of the anti-cracking magnesia carbon brick with good heat insulation effect according to claim 9, is characterized in that: in the first step, when the magnesia carbon brick raw material is firstly elastically extruded in the forming box body (41), each inner groove forming pipe (45) is slowly rotated by using a rotating motor (47), a long gear (471) and a transmission gear (451), and in the second step, after the water steel column (26) is pulled out, each inner groove forming pipe (45) is slowly rotated by using the rotating motor (47), the long gear (471) and the transmission gear (451) again, and then the inner groove forming pipes (45) are moved and separated.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114311227A (en) * | 2022-01-06 | 2022-04-12 | 浙江宏丰炉料有限公司 | Automatic-repairing heat-insulating magnesia carbon brick and processing technology thereof |
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