A refractory high chrome brick and its manufacturing process

Abstract

The present invention relates to a refractory high-chrome brick, comprising two interconnected brick bodies, an air inlet, a mounting groove and an air outlet arranged between the two brick bodies and connected in sequence, a spoiler component arranged in the air inlet and used to guide hot air to the inner wall of the air inlet, a kneading component rotatably arranged in the air inlet and cooperating with the inner wall of the air inlet for kneading dust, a control component arranged between the two brick bodies and used to control the opening and closing of the air inlet and the air outlet, and a protective cover arranged in the mounting groove and used to prevent the brick body from bursting, and the protective cover is a hollow structure and connected to the air inlet and the air outlet; the present invention also provides a manufacturing process of the refractory high-chrome brick, the steps of which include molding, drying, assembly and firing processes. The present invention solves the technical problems of uneven heating, easy breakage or bursting, and low safety of existing high-chrome bricks.

Description

Technical Field

[0001] The invention relates to the technical field of refractory bricks, and in particular to a refractory high-chrome brick and a manufacturing process thereof. Background Art

[0002] At present, the shaped refractory products with chromium oxide and aluminum oxide as the main raw materials, or a small amount of zirconium oxide, fired at high temperature, with a chromium oxide content of not less than 75%, and a chromium oxide, aluminum oxide and zirconium oxide content of not less than 98% are called high chrome bricks. High chrome bricks are a kind of refractory bricks with excellent corrosion resistance, high compressive strength at room temperature, excellent wear resistance, high temperature resistance, good thermal shock resistance, etc. They are mainly used in key parts of kilns such as coal chemical industry, chemical industry kilns, garbage incinerators, gasification furnaces, etc.

[0003] Patent document CN101935229A discloses a microporous high chrome brick and its preparation method. The solution is: 40-70wt% of fused chromium oxide particles, 10-20wt% of fused chromium oxide fine powder, 0.3-5wt% of SiC particles, 0.3-5wt% of SiC fine powder, 3-15wt% of monoclinic zirconium oxide fine powder, 2-15wt% of alumina fine powder and 4-12wt% of chromium oxide green fine powder, and 0.5-3wt% of dextrin and 2-7wt% of aluminum dihydrogen phosphate as binders are added to the above mixture. According to the above components, the fused chromium oxide particles and SiC particles are first dry-mixed for 3 to 5 minutes, and aluminum dihydrogen phosphate is added and wet-mixed for 5 to 7 minutes. Then, a pre-made mixed powder of fused chromium oxide fine powder, SiC fine powder, monoclinic zirconium oxide fine powder, aluminum oxide fine powder, chromium oxide green fine powder and dextrin is added, mixed and ground for 15 to 30 minutes, trapped, pressed into a green body, dried, and sintered in air at 1350 to 1650°C.

[0004] However, during actual use, the inventors found that the existing high-chrome bricks were heated unevenly during use, resulting in excessively high local temperatures, which could cause local fractures of the bricks. In particular, the temperature on the side of the brick facing the fire rose too quickly, making it prone to fracture or explosion, and even causing the walls made of bricks to collapse, posing a safety hazard. Summary of the invention

[0005] The purpose of the present invention is to address the shortcomings of the prior art, by setting an air inlet to match the air outlet so that hot air can flow in the brick body; by setting a spoiler assembly including a shaft and a guide vane, the hot air is blown toward the inner wall of the air inlet while reducing the flow velocity through the guide vane; by setting the protective sleeve as a hollow structure and connecting the air inlet and the air outlet, the contact area between the hot air and the brick body is increased to prevent the brick body from breaking or bursting out; by setting a control assembly to match the kneading assembly, dust accumulation is prevented from clogging the air inlet and the air outlet. Thus, the problems of uneven heating, easy breaking or bursting, and low safety of the existing high-chrome bricks are solved.

[0006] In view of the above technical problems, the technical solution is as follows: a refractory high chrome brick, comprising:

[0007] Two interconnected brick bodies, an air inlet, a mounting groove and an air outlet arranged between the two brick bodies and connected in sequence, a spoiler component arranged in the air inlet and used to guide hot air to the inner wall of the air inlet, a kneading component rotatably arranged in the air inlet and cooperating with the inner wall of the air inlet to knead dust, a control component arranged between the two brick bodies and used to control the opening and closing of the air inlet and the air outlet, and a protective cover arranged in the mounting groove and used to prevent the brick body from bursting, wherein the protective cover is a hollow structure and connected to the air inlet and the air outlet;

[0008] The spoiler assembly includes a shaft rotatably arranged on the axis of the air inlet and a plurality of guide vanes equidistantly arranged on the shaft along the circumference of the air inlet and used to guide the hot air, and the guide vanes cooperate with the hot air to drive the shaft to rotate.

[0009] Preferably, the brick body is composed of fused chrome sand, alumina and zirconium oxide.

[0010] Preferably, the content of the fused chromium sand is between 85% and 95%.

[0011] Preferably, the content of aluminum oxide is between 3% and 7%.

[0012] Preferably, the content of zirconium oxide is between 3% and 7%.

[0013] Preferably, the density of the brick body is between 4200kg / m³-4300kg / m³, and the continuous firing temperature of the brick body is between 1550°C-1650°C.

[0014] Preferably, the kneading assembly comprises a mounting rod arranged on the shaft and / or the guide vane and a plurality of kneading teeth arranged on the mounting rod at intervals along the length direction of the air inlet and extending to the inner wall of the air inlet.

[0015] Preferably, a mounting cavity is provided in the air inlet, and the shaft is axially slidably disposed in the air inlet and the mounting cavity;

[0016] The control component includes a mounting seat arranged in the mounting cavity and connected to the shaft rod, an opening and closing member arranged between the mounting seat and the shaft rod and cooperating with the hot gas to push the shaft rod to slide until the air inlet is opened, an opening and closing column with one end slidingly arranged on the mounting seat and the other end extending into the air outlet and cooperating with the sliding of the shaft rod to control the opening and closing of the air outlet, and an elastic member arranged on the brick body and used to force the shaft rod to slide until the opening and closing member closes the air inlet.

[0017] Preferably, the opening and closing member includes a plurality of opening and closing plates which are rotatably arranged on the shaft and / or the mounting seat at equal intervals along the circumference of the air inlet and rotate in cooperation with the push of the hot air and the extrusion of the mounting cavity, and a limiting column which is arranged on the shaft and / or the mounting seat and is used to limit the opening and closing plate to an inclined state when the opening and closing plate rotates in cooperation with the hot air to open the air inlet.

[0018] The present application also provides a manufacturing process of high chrome bricks, comprising the following steps:

[0019] Step 1: a molding process, after the protective cover is connected to the molding mold, the raw materials are put into the molding mold in layers, so that the side of the brick body provided with the air inlet after molding is composed of powdered raw materials;

[0020] Step 2: Drying process, placing the formed bricks in groups of two in the same state into a drying tower for drying;

[0021] Step 3: Assembling process: after a group of the brick bodies are dried, the spoiler assembly, the kneading assembly and the control assembly are placed on one of the brick bodies, and a connecting material layer is applied on another brick body, and then the two brick bodies are assembled by covering;

[0022] Step 4: Firing process, the two assembled brick bodies are pressed tightly and placed in a kiln for firing, and during the firing process, the side of the brick body provided with the air inlet faces the flame in the kiln.

[0023] Beneficial effects of the present invention:

[0024] (1) In the present invention, an air inlet is provided to cooperate with an air outlet so that hot air can flow inside the brick body, thereby improving the heat transfer efficiency and allowing the temperature of the entire brick body to rise rapidly, thereby avoiding uneven heating and preventing the brick body from breaking or bursting easily. A spoiler assembly including a shaft and a guide vane is provided so that the hot air passes through the guide vane to reduce the flow velocity while blowing toward the inner wall of the air inlet, thereby improving the heat transfer effect of the hot air inside the brick body and the temperature rise rate inside the brick body. A protective sleeve is provided as a hollow structure and connected to the air inlet and the air outlet, thereby increasing the contact area between the hot air and the brick body, further improving the heat transfer efficiency, and preventing the brick body from bursting out when it breaks or bursts, thereby improving safety. A control assembly is provided to cooperate with a kneading assembly, thereby preventing dust from accumulating and clogging the air inlet and the air outlet, thereby causing damage to the device, thereby further improving safety.

[0025] (2) In the present invention, a plurality of kneading teeth extending to the inner wall of the air inlet are installed on the mounting rod, which can not only knead the dust in cooperation with the inner wall of the air inlet, but also scratch the inner wall of the air inlet, so that large pieces of dust are more likely to adhere to the inner wall of the air inlet, thereby facilitating kneading and improving the kneading effect;

[0026] (3) In the present invention, a shaft is arranged to slide axially in the air inlet, and the elastic member and the opening and closing member are coordinated to control the shaft and the opening and closing column to move back and forth in the air inlet along with the opening and closing member according to the size of the hot air, so that the opening and closing of the air inlet and the air outlet are automatically controlled, and the kneading component moves back and forth in the air inlet along with the shaft, thereby further improving the kneading effect, avoiding dust accumulation and clogging in the air inlet and the air outlet, causing damage to the device, and further improving safety;

[0027] In summary, the high chrome brick has the effects of uniform heating, not easy to break or explode, and high safety, and is particularly suitable for the field of refractory brick technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0029] Figure 1 A three-dimensional diagram of a high-chrome brick provided by the present invention.

[0030] Figure 2 The present invention provides a schematic diagram of an explosion of a high-chrome brick.

[0031] Figure 3 A schematic diagram of a brick body and its internal structure provided by the present invention.

[0032] Figure 4-5This is a schematic diagram of the internal structure of the brick body provided by the present invention in different directions.

[0033] Figure 6 A three-dimensional diagram of a manufacturing device for a high-chrome brick manufacturing process provided by the present invention.

[0034] Figure 7 A three-dimensional diagram of the molding mechanism provided by the present invention.

[0035] Figure 8 This is a schematic structural diagram of the rotating disk provided by the present invention.

[0036] Fig. 9 This is a schematic structural diagram of the conveying assembly provided by the present invention.

[0037] Figure 10-11 This is a schematic diagram of the structure of the feeding assembly provided by the present invention in different directions.

[0038] Fig.12 A three-dimensional diagram of the assembly mechanism provided by the present invention.

[0039] Fig.13 This is a schematic diagram of the structure of the flip assembly, the installation assembly and the cover closing assembly provided by the present invention.

[0040] Fig.14 The present invention provides Fig.13 A partial enlarged view of point A in the middle.

[0041] Fig.15 This is a schematic structural diagram of the flip assembly provided by the present invention.

[0042] Figure 16-Figure 19 A diagram of the closing process of the brick body provided by the present invention.

[0043] Fig. 20 A schematic structural diagram of the bearing assembly provided by the present invention. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings.

[0045] Embodiment 1

[0046] like Figure 1-Figure 5 As shown, a refractory high chrome brick comprises:

[0047] Two interconnected brick bodies 1, an air inlet 11, a mounting groove 12 and an air outlet 13 arranged between the two brick bodies 1 and connected in sequence, a spoiler component 2 arranged in the air inlet 11 and used to guide hot air to the inner wall of the air inlet 11, a kneading component 3 rotatably arranged in the air inlet 11 and used to knead dust in cooperation with the inner wall of the air inlet 11, a control component 4 arranged between the two brick bodies 1 and used to control the opening and closing of the air inlet 11 and the air outlet 13, and a protective cover 5 arranged in the mounting groove 12 and used to prevent the brick body 1 from bursting, and the protective cover 5 is a hollow structure and connected to the air inlet 11 and the air outlet 13;

[0048] The spoiler assembly 2 includes a shaft 21 rotatably disposed on the axis of the air inlet 11 and a plurality of guide vanes 22 equidistantly disposed on the shaft 21 along the circumference of the air inlet 11 and used to guide hot air. The guide vanes 22 cooperate with the hot air to drive the shaft 21 to rotate.

[0049] In this embodiment, by setting the air inlet 11 in coordination with the air outlet 13, hot air can flow in the brick body 1, thereby improving the heat transfer efficiency, allowing the overall temperature of the brick body 1 to rise rapidly, avoiding uneven heating, and preventing it from breaking or bursting; by setting the spoiler component 2 including the shaft rod 21 and the guide vane 22, the hot air is blown toward the inner wall of the air inlet 11 while reducing the flow velocity through the guide vane 22, thereby improving the heat transfer effect of the hot air inside the brick body 1 and the temperature rise rate inside the brick body 1; by setting the protective cover 5 as a hollow structure and connecting it to the air inlet 11 and the air outlet 13, the contact area between the hot air and the brick body 1 is increased, further improving the heat transfer efficiency, and avoiding the brick body 1 from bursting when it breaks or bursts, thereby improving safety; by setting the control component 4 in coordination with the kneading component 3, dust accumulation and clogging in the air inlet 11 and the air outlet 13 are avoided, causing damage to the device, thereby further improving safety.

[0050] In detail, when the hot air blows toward the fire-facing surface of the brick body 1, the control component 4 first opens the air inlet 11 and the air outlet 13, and then the hot air enters the air inlet 11 and blows the guide vane 22 to rotate, so that the hot air is blown toward the inner wall of the air inlet 11, thereby improving the heat transfer effect of the hot air inside the brick body 1 and the temperature rise rate inside the brick body 1, while the dust is blown toward the inner wall of the air inlet 11 with the hot air, and the kneading component 3 is driven to cooperate with the inner wall of the air inlet 11 to knead and crush the dust to avoid large pieces of dust blocking the air inlet 11 and the air outlet 13. Then the hot air enters the protective cover 5, which not only improves the heat transfer efficiency between the hot air and the brick body 1 through the large cavity of the protective cover 5, but also enables the hot air to support the protective cover 5 to play a buffering role when the brick body 1 breaks or explodes, thereby avoiding the protective cover 5 from being punctured, improving the protective effect of the protective cover 5, and further improving the safety. Finally, the hot air entrains the crushed dust and is discharged through the air outlet 13.

[0051] It should be noted that the number of the air inlets 11 and the air outlets 13 is preferably an even number, and they are symmetrically arranged at both ends of the brick body 1, which not only improves the heat transfer efficiency, but also makes the brick body 1 a symmetrical structure, which is convenient for subsequent assembly and production.

[0052] Further, if Figure 1 As shown, the brick body 1 is composed of fused chromium sand, alumina and zirconium oxide, the content of the fused chromium sand is between 85% and 95%, the content of alumina is between 3% and 7%, the content of zirconium oxide is between 3% and 7%, the density of the brick body 1 is between 4200kg / m³ and 4300kg / m³, and the continuous firing temperature of the brick body 1 is between 1550°C and 1650°C.

[0053] Further, if Figure 4-Figure 5 As shown, the kneading assembly 3 includes a mounting rod 31 disposed on the shaft 21 and / or the guide vane 22 and a plurality of kneading teeth 32 disposed on the mounting rod 31 at intervals along the length direction of the air inlet 11 and extending to the inner wall of the air inlet 11 .

[0054] In this embodiment, a plurality of kneading teeth 32 extending to the inner wall of the air inlet 11 are installed on a mounting rod 31, which can not only cooperate with the inner wall of the air inlet 11 to knead the dust, but also scratch the inner wall of the air inlet 11, so that large pieces of dust are more easily attached to the inner wall of the air inlet 11, thereby facilitating kneading and improving the kneading effect.

[0055] Further, if Figure 2-Figure 3 As shown, a mounting cavity 14 is provided in the air inlet 11, and the shaft 21 is axially slidably disposed in the air inlet 11 and the mounting cavity 14;

[0056] The control assembly 4 includes a mounting seat 41 disposed in the mounting cavity 14 and connected to the shaft 21, an opening and closing member 42 disposed between the mounting seat 41 and the shaft 21 and cooperating with the hot air to push the shaft 21 to slide until the air inlet 11 is opened, an opening and closing column 43 having one end slidingly disposed on the mounting seat 41 and the other end extending into the air outlet 13 and cooperating with the sliding of the shaft 21 to control the opening and closing of the air outlet 13, and an elastic member 44 disposed on the brick body 1 and used to force the shaft 21 to slide until the opening and closing member 42 closes the air inlet 11.

[0057] In this embodiment, the shaft rod 21 is arranged to slide axially in the air inlet 11, and the elastic member 44 and the opening and closing member 42 are cooperated to control the shaft rod 21 and the opening and closing column 43 to move back and forth in the air inlet 11 along with the opening and closing member 42 according to the size of the hot air. This not only automatically controls the opening and closing of the air inlet 11 and the air outlet 13, but also enables the kneading component 3 to move back and forth in the air inlet 11 along with the shaft rod 21, thereby further improving the kneading effect.

[0058] In detail, when hot air blows toward the fire-facing surface of the brick body 1, the hot air pushes the opening and closing piece 42 to move into the air inlet 11 until the air inlet 11 is opened. At this time, the opening and closing column 43 opens the air outlet 13, and the elastic piece 44 is deformed; when hot air is not blown toward the fire-facing surface of the brick body 1, the elastic piece 44 restores its deformation, thereby forcing the opening and closing piece 42 and the opening and closing column 43 to slide with the shaft 21 and close the air inlet 11 and the air outlet 13 respectively; during use, the hot air blown from the fire-facing surface of the brick body 1 often changes all the time, so the kneading component 3 is able to move back and forth in the air inlet 11 with the shaft 21, thereby improving the kneading effect.

[0059] It should be noted that the elastic member 44 is a coil spring, a leaf spring, etc., and both the elastic member 44 and the installation method thereof are prior arts, and will not be described in detail here.

[0060] Further, if Figure 4-Figure 5 As shown, the opening and closing member 42 includes a plurality of opening and closing plates 421 which are rotatably arranged on the shaft 21 and / or the mounting seat 41 at equal intervals along the circumference of the air inlet 11 and rotated in cooperation with the push of the hot air and the squeezing of the mounting cavity 14, and a limiting column 422 which is arranged on the shaft 21 and / or the mounting seat 41 and is used to limit the opening and closing plate 421 to an inclined state when the opening and closing plate 421 rotates in cooperation with the hot air to open the air inlet 11.

[0061] In this embodiment, the opening and closing of the air inlet 11 is controlled by setting an opening and closing plate 421, and by setting a limit column 422, the opening and closing plate 421 is in an inclined state when the air inlet 11 is opened, which is convenient for the subsequent opening and closing plate 421 to cooperate with the elastic part 44 and the extrusion of the installation cavity 14 to achieve rotation and closure, and cooperate with the hot air to provide sufficient power for the rotation of the shaft rod 21, thereby facilitating the rotation of the shaft rod 21.

[0062] In detail, when hot air blows toward the fire-facing surface of the brick body 1, the hot air pushes the opening and closing plate 421 to move into the air inlet 11 and pushes the opening and closing plate 421 to rotate until it abuts against the limiting column 422. The air inlet 11 opens, and the opening and closing plate 421 cooperates with the hot air to push the shaft 21 to rotate. At this time, the elastic member 44 is compressed; when no hot air blows toward the fire-facing surface of the brick body 1, the elastic member 44 restores its deformation, and the installation cavity 14 squeezes the opening and closing plate 421 to rotate, thereby causing the opening and closing plate 421 to close the air inlet 11.

[0063] It should be noted that the connection rod 45 between the mounting seat 41 and the shaft rod 21 cooperates with the plurality of opening and closing plates 421 to achieve closure, thereby facilitating the opening and closing plates 421 to close the air inlet 11 .

[0064] Embodiment 2

[0065] like Figure 1-Figure 20 As shown, a manufacturing process of refractory high chrome bricks comprises the following steps:

[0066] Step 1: Forming process, after the protective cover 5 is connected to the forming mold 82, the raw materials are placed in layers into the forming mold 82, so that the side of the formed brick body 1 with the air inlet 11 is composed of powdered raw materials; by first connecting the protective cover 5 to the forming mold 82, it is convenient for the subsequent demoulding of the brick body 1, and the side of the brick body 1 with the air inlet 11 is composed of powdered raw materials to avoid large pieces of raw materials falling off when the kneading mechanism scratches the inner wall of the air inlet 11, causing the air inlet 11 and the air outlet 13 to be blocked, and at the same time, the formed concave and convex inner wall is made more uniform;

[0067] Step 2: Drying process, two formed brick bodies 1 are placed in a drying tower 6 in the same state for drying; this allows a group of brick bodies 1 to have similar drying effects after being dried in the drying tower 6, thus avoiding differences in a group of brick bodies 1 that may cause differences in subsequent firing;

[0068] Step 3: Assembly process: after a group of brick bodies 1 are dried, the spoiler component 2, the kneading component 3 and the control component 4 are placed on one brick body 1, and a connecting material layer is applied on another brick body 1, and then the two brick bodies 1 are covered and assembled; this realizes the automatic assembly of the brick body 1 and its internal structure;

[0069] Step 4: Firing process, the two assembled brick bodies 1 are pressed tightly and placed in the kiln 7 for firing, and the side of the brick body 1 with the air inlet 11 during the firing process faces the flame in the kiln 7; this allows hot air to enter the brick body 1 through the air inlet 11 during the firing process, which not only makes the brick body 1 heated evenly and the quality of the fired product better, but also blows the connecting material layer (such as refractory slurry, refractory mortar, etc.) to prevent it from solidifying in the air inlet 11 or the air outlet 13 and causing blockage. In addition, the internal structure of the brick body 1 works during the firing process, which not only avoids interference with its work after the connecting material solidifies, but also enables the kneading mechanism to easily scrape the inner wall of the air inlet 11 during the firing process, so as to avoid incomplete kneading or even interference rotation during subsequent use.

[0070] like Figure 6-Figure 20 As shown, a manufacturing equipment for a high chrome brick manufacturing process includes a drying tower 6 and a kiln 7, and also includes:

[0071] A forming mechanism 8 is disposed at the front end of the drying tower 6 and is used to form the brick body 1 , and an assembling mechanism 9 is disposed between the drying tower 6 and the kiln 7 and is used to assemble the spoiler component 2 , the kneading component 3 and the control component 4 between the two brick bodies 1 .

[0072] In this embodiment, the forming mechanism 8 and the assembling mechanism 9 are provided in cooperation with the drying tower 6 and the kiln 7 to realize the automated production of the high chrome bricks, thereby reducing the burden on workers and improving production efficiency.

[0073] like Figure 7As shown, the forming mechanism 8 includes a rotating disk 81, a plurality of forming molds 82 arranged on the rotating disk 81 at intervals along the rotation direction of the rotating disk 81, a conveying component 83, a feeding component 84, a punch 85 and a first grabbing member 86 arranged in sequence on the outside of the rotating disk 81 along the rotation direction of the rotating disk 81, and the conveying component 83 is used to convey the protective cover 5 into the forming mold 82, the feeding component 84 is used to feed the raw materials into the forming mold 82 in layers, the punch 85 is used to press out the brick body 1, and the first grabbing member 86 is used to grab the formed brick body 1 to the drying tower 6.

[0074] In this embodiment, by setting a rotating disk 81 to convey the forming mold 82, the conveying component 83, the loading component 84 and the punching machine 85 (which are existing technologies and will not be described in detail here) are successively cooperated to press out the brick body 1, and then the first grabbing member 86 is used to grab the brick body 1 into the drying tower 6 to realize automated pressing production.

[0075] It should be noted that there are two forming mechanisms 8, which are respectively located on both sides of the drying tower 6, so that two brick bodies 1 can be formed at the same time and placed in the drying tower 6 in the same state (in this application, this state refers to the brick body 1 with the air inlet 11 and the air outlet 13 facing downward), which not only improves the pressing efficiency and production efficiency of the brick body 1, but also facilitates subsequent assembly production.

[0076] like Figure 8 As shown, the molding mold 82 includes an outer frame 821 arranged on the rotating disk 81, a bottom mold 822 arranged inside the outer frame 821 and movable up and down, a molding ridge 823 arranged on the bottom mold 822 and used for molding the air inlet 11 and the air outlet 13, and a molding plate 824 arranged on the bottom mold 822 and used for molding the mounting groove 12.

[0077] In this embodiment, an outer frame 821 is provided to cooperate with a bottom mold 822 to form a space for molding the brick body 1, and the bottom mold 822 is moved to facilitate demoulding of the brick body 1; a notch structure on the molding brick body 1 is formed by providing molding convex strips 823 and molding plates 824.

[0078] like Fig. 9 As shown, the conveying assembly 83 includes a first conveying belt 831 arranged on the outside of the rotating disk 81 and used to convey the protective cover 5, a positioning plate 832 arranged on the first conveying belt 831 and used to position the protective cover 5, and a second grabbing member arranged between the first conveying belt 831 and the rotating disk 81 and used to grab the protective cover 5 onto the forming plate 824.

[0079] In this embodiment, the connection between the protective cover 5 and the forming plate 824 is achieved by providing a first conveyor belt 831 in cooperation with the positioning plate 832 and the second grabbing member.

[0080] In detail, when the protective cover 5 is conveyed by the first conveyor belt 831 to abut against the positioning plate 832 , the protective cover 5 and the forming plate 824 are positioned, and then the second grabbing member is able to grab the protective cover 5 and connect it to the forming plate 824 .

[0081] It should be noted that the upper end of the molding plate 824 is provided with a guide structure (such as a guide slope or a guide arc surface) to facilitate the connection of the protective cover 5;

[0082] In addition, when there are two forming mechanisms 8 , there are two positioning plates 832 , and the positioning plate 832 at the front end along the conveying direction of the first conveyor belt 831 is a rotatable or movable structure, so that the two positioning plates 832 can respectively position the two protective covers 5 .

[0083] like Figure 10-11 As shown, the feeding assembly 84 includes a feeding pipe 841 arranged on the outside of the rotating disk 81 and used for feeding raw materials, a vibrating screen 842 arranged between the feeding pipe 841 and the forming mold 82 and used for vibrating the raw materials, and a baffle 843 movably arranged at the bottom of the vibrating screen 842 and used for controlling the size and opening and closing of the sieve holes on the vibrating screen 842.

[0084] In this embodiment, the vibrating screen 842 is provided in cooperation with the baffle 843 to realize layered feeding of raw materials, and the feeding is made more uniform, so that the quality of the formed brick body 1 is better.

[0085] In detail, when unloading, first block and close the sieve holes through the baffle 843, and unload the material into the vibrating screen 842 through the feeding tube 841, and then vibrate the vibrating screen 842 to spread the material on the vibrating screen 842, then control the sieve holes to open to a certain extent through the baffle 843, and cooperate with the vibration of the vibrating screen 842 to make the powdered raw material evenly placed into the forming mold 82, and then continue to unload the material into the vibrating screen 842 through the feeding tube 841, and vibrate the vibrating screen 842 to make the material flat on the vibrating screen 842, and finally control the sieve holes to open completely through the baffle 843, and cooperate with the vibration of the vibrating screen 842 to make the material evenly placed above the powdered raw material, and the loading is completed.

[0086] It should be noted that the vibrating screen 842 itself and the installation method are both existing technologies and will not be described in detail here.

[0087] like Fig.12As shown, the assembly mechanism 9 includes a flipping assembly 91 disposed between the drying tower 6 and the kiln 7 and used to flip a brick body 1, an installation assembly 92 disposed on the outside of the flipping assembly 91 and used to install the internal structure of the brick body 1, a covering assembly 93 disposed between the kiln 7 and the flipping assembly 91 and used to cover two brick bodies 1 after applying a connecting material layer therebetween, and a bearing assembly 94 disposed between the covering assembly 93 and the kiln 7 and used to bear two covered brick bodies 1.

[0088] In this embodiment, a flipping component 91 is provided to flip a brick body 1 and the internal structure of the brick body 1 (the spoiler component 2, the kneading component 3 and the control component 4) is installed in cooperation with the installation component 92, and then the two brick bodies 1 are covered with the covering component 93, and then the covered brick bodies 1 are transported to the kiln 7 for firing through the supporting component 94, thereby realizing automated production.

[0089] like Figure 12-13 as well as Figure 15-18 As shown, the flip assembly 91 includes a frame 911 arranged between the drying tower 6 and the kiln 7, a flip plate 912 rotatably arranged on the frame 911 and used for carrying and flipping the brick body 1, a supporting plate 913 movably arranged on one end of the frame 911 close to the flip plate 912 and used for supporting the brick body 1, a pushing plate 914 arranged on the supporting plate 913 and used for pushing the brick body 1 out of the flip plate 912, two first guide plates 915 respectively arranged on both sides of the moving plate and used for guiding the brick body 1 to the pushing plate 914, a limiting plate 916 arranged at the other end of the frame 911 and cooperating with the pushing plate 914 to position the brick body 1, and two second guide plates 917 respectively arranged on both sides of the limiting plate 916 and used for guiding the brick body 1 to the limiting plate 916.

[0090] In this embodiment, the flipping of the brick body 1 is achieved by setting a flip plate 912 in cooperation with the bearing plate 913 and the first push plate 914, and the positioning of the brick body 1 is achieved by setting a first guide plate 915 and a second guide plate 917 in cooperation with the first push plate 914 and the limit plate 916, so as to facilitate subsequent assembly production.

[0091] In detail, first, the drying tower 6 transports the dried brick body 1 to the flip plate 912, and the flip plate 912 rotates and flips the brick body 1 to the top of the supporting plate 913, and then the supporting plate 913 moves away from the flip plate 912. At this time, the first guide plate 915 guides the brick body 1 to the push plate 914 and then pushes the brick body 1 out of the flip plate 912 through the push plate 914. Finally, the supporting plate 913 moves in the direction of the limit plate 916, and the second guide plate 917 guides the brick body 1 to the limit plate 916, and then cooperates with the push plate 914 to complete the positioning of the brick body 1.

[0092] like Fig.13 as well as Figure 15-19 As shown, the installation component 92 includes a second conveyor belt 921 arranged on the outside of the flip component 91 and used to convey the internal structure of the brick body 1, a positioning rod 922 arranged on the second conveyor belt 921 and used to position the internal structure of the brick body 1, a third grabbing member 923 arranged between the second conveyor belt 921 and the flip component 91 and used to grab the internal structure of the brick body 1 onto the brick body 1, and a pushing rod 924 movably arranged on the frame 911 and used to push the opening and closing column 43 on the internal structure of the brick body 1 to be directly above the air outlet 13.

[0093] In this embodiment, the installation between the internal structure of the brick body 1 and the air inlet 11 and the air outlet 13 on the brick body 1 is achieved by providing a second conveyor belt 921 in cooperation with a positioning rod 922 , a third grabbing member 923 and a pushing rod 924 .

[0094] In detail, when the internal structure of the brick body 1 is conveyed by the second conveyor belt 921 to abut against the positioning rod 922, the internal structure of the brick body 1 is positioned between the air inlet 11 and the installation cavity 14, and then the third grabbing member 923 is able to grab the internal structure of the brick body 1 and accurately install it in the air inlet 11 and the installation cavity 14. During this process, the opening and closing column 43 slides to the bottom of the internal structure of the brick body 1 under the action of gravity, so it is necessary to push the opening and closing column 43 to the top of the air outlet 13 by the pushing rod 924 (refer to Figure 17-19 ), so that the opening and closing column 43 can be installed in the air outlet 13.

[0095] It should be noted that when there are multiple air inlets 11 and air outlets 13, the number of positioning rods 922 is a corresponding number, and the positioning rods 922 at the front end along the transmission direction of the second conveyor belt 921 are rotatable or movable structures, so that multiple positioning rods 922 can respectively position multiple internal structures of the brick bodies 1.

[0096] like Fig.13 as well as Figure 14-Figure 19 As shown, the covering assembly 93 includes a smearing member 931 disposed between the kiln 7 and the flip assembly 91 and smearing the connecting material layer, a third conveyor belt 932 disposed between the smearing member 931 and the flip assembly 91 and used to continue to convey the brick body 1, a fourth grabbing member 933 disposed above the third conveyor belt 932 and used to grab the brick body 1, and a pressing plate 934 installed in the air inlet 11 after pressing the elastic member 44 to compress the pressing plate 934 disposed on the flip assembly 91 and used to push the internal structure of the brick body 1 to slide and install between the air inlets 11 of the two brick bodies 1 during the process of the fourth grabbing member 933 covering the two brick bodies 1 (refer to Figure 18-19 ).

[0097] In this embodiment, the third conveyor belt 932 is provided to convey the brick body 1 to between the flip assembly 91 and the smearing member 931 , and then cooperates with the fourth grabbing member 933 and the pressing plate 934 to achieve the covering installation between the two brick bodies 1 and the internal structure of the brick body 1 .

[0098] In detail, when the fourth grabbing member 933 grabs the brick body 1 and closes it on the brick body 1 of the flip assembly 91, the pressing plate 934 pushes the internal structure of the brick body 1 to slide until the opening and closing plate 421 cooperates with the installation cavity 14 of the two brick bodies 1 to squeeze and close. After the pressing plate 934 presses the elastic member 44 to compress and install it in the air inlet 11 of the two brick bodies 1, the pressing plate 934 withdraws to complete the closing operation.

[0099] It should be noted that the present application does not limit the specific structure of the smearing member 931, including a holding bucket for holding the connection material, which can cooperate with the third gripping member 923 to deeply apply the smear to the brick body 1, or can be applied by a brush roller;

[0100] In addition, a third guide plate 936 is provided on the grabbing arm 935 of the fourth grabbing member 933. When the grabbing arm 935 grabs the brick body 1, the third guide plate 936 is guided to position between the brick body 1 and the grabbing arm 935, thereby making the closing of the brick body 1 more accurate.

[0101] like Fig. 20 As shown, the supporting assembly 94 includes a supporting plate 941 which is slidably and rotatably disposed between the kiln 7 and the covering assembly 93 and is used to support two covered brick bodies 1, and a pressing plate 942 which is disposed on the supporting plate 941 and is used to press the two brick bodies 1 during firing.

[0102] In this embodiment, a supporting plate 941 is provided to cooperate with the fourth grabbing member 933 so that the fire-facing surfaces of the two brick bodies 1 after the cover assembly face outward, so that during the firing process, hot air enters the air inlet 11 through the fire-facing surfaces of the two brick bodies 1; and an extrusion plate 942 is provided to prevent the internal structure of the two brick bodies 1 from being misaligned and moved during the firing process.

[0103] In detail, when the two brick bodies 1 are closed, the fourth grabbing member 933 grabs them onto the supporting plate 941 and cooperates with the rotation of the supporting plate 941 to evenly stack the closed brick bodies 1 on the supporting plate 941 with the fire-facing side of the brick bodies 1 facing outwards. Then, the squeezing plate 942 squeezes the two brick bodies 1 to prevent misalignment between the two brick bodies 1 during the firing process.

[0104] It should be noted that the first grabbing member 86, the second grabbing member, the third grabbing member 923 and the fourth grabbing member 933 are all mechanical arms, and both the manipulators and the mounting methods thereof are existing technologies, and will not be described in detail here.

[0105] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front and back", "left and right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the invention.

[0106] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0107] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical guidance of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A refractory high chrome brick, characterized in that: include: Two interconnected brick bodies, an air inlet, a mounting groove and an air outlet arranged between the two brick bodies and connected in sequence, a spoiler component arranged in the air inlet and used to guide hot air to the inner wall of the air inlet, a kneading component rotatably arranged in the air inlet and cooperating with the inner wall of the air inlet to knead dust, a control component arranged between the two brick bodies and used to control the opening and closing of the air inlet and the air outlet, and a protective cover arranged in the mounting groove and used to prevent the brick body from bursting, wherein the protective cover is a hollow structure and connected to the air inlet and the air outlet; The spoiler assembly includes a shaft rotatably arranged on the axis of the air inlet and a plurality of guide vanes equidistantly arranged on the shaft along the circumference of the air inlet and used to guide the hot air, and the guide vanes cooperate with the hot air to drive the shaft to rotate; The kneading assembly comprises a mounting rod disposed on the shaft and / or the guide vane and a plurality of kneading teeth disposed on the mounting rod at intervals along the length direction of the air inlet and extending to the inner wall of the air inlet; A mounting groove is provided in the air inlet, and the shaft rod is axially slidably arranged in the air inlet and the mounting groove; The control component includes a mounting seat arranged in the mounting groove and connected to the shaft rod, an opening and closing member arranged between the mounting seat and the shaft rod and cooperating with the hot gas to push the shaft rod to slide until the air inlet is opened, an opening and closing column with one end slidingly arranged on the mounting seat and the other end extending into the air outlet and cooperating with the sliding of the shaft rod to control the opening and closing of the air outlet, and an elastic member arranged on the brick body and used to force the shaft rod to slide until the opening and closing member closes the air inlet.

2. A refractory high chrome brick according to claim 1, characterized in that: The brick body is composed of fused chrome sand, aluminum oxide and zirconium oxide.

3. A refractory high chrome brick according to claim 2, characterized in that: The content of the fused chromium sand is between 85% and 95%.

4. A refractory high chrome brick according to claim 2, characterized in that: The content of aluminum oxide is between 3% and 7%.

5. A refractory high chrome brick according to claim 2, characterized in that: The content of zirconium oxide is between 3% and 7%.

6. A refractory high chrome brick according to claim 1, characterized in that: The density of the brick body is between 4200kg / m³ and 4300kg / m³, and the continuous firing temperature of the brick body is between 1550°C and 1650°C.

7. A refractory high chrome brick according to claim 1, characterized in that: The opening and closing member includes a plurality of opening and closing plates which are rotatably arranged on the shaft rod and / or the mounting seat at equal intervals along the circumference of the air inlet and which rotate in cooperation with the push of the hot gas and the squeezing of the mounting groove, and a limiting column which is arranged on the shaft rod and / or the mounting seat and is used to limit the opening and closing plate to an inclined state when the opening and closing plate rotates in cooperation with the hot gas to open the air inlet.

8. A manufacturing process for a high chrome refractory brick according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: a molding process, after the protective cover is connected to the molding mold, the raw materials are put into the molding mold in layers, so that the side of the brick body provided with the air inlet after molding is composed of powdered raw materials; Step 2: Drying process, placing the formed bricks in groups of two in the same state into a drying tower for drying; Step 3: Assembling process: after a group of the brick bodies are dried, the spoiler assembly, the kneading assembly and the control assembly are placed on one of the brick bodies, and a connecting material layer is applied on another brick body, and then the two brick bodies are assembled by covering; Step 4: Firing process, the two assembled brick bodies are pressed tightly and placed in a kiln for firing, and during the firing process, the side of the brick body provided with the air inlet faces the flame in the kiln.

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