A sintered brick raw material crushing device and a method for preparing sintered bricks using the same

Abstract

The present invention belongs to the technical field of crushing equipment, specifically a crushing equipment for sintered brick raw materials and a method for preparing sintered bricks using the same, the crushing equipment comprising a crushing box, wherein the top and bottom of the crushing box are respectively provided with a feeding port and a discharging port, and the crushing box is provided with a crushing drum, wherein the top and bottom of the crushing drum are respectively provided with a feeding port and a screening port. The present invention is provided with a material stripping plate, and in the process of crushing the raw materials, the material stripping plate can be driven by the transmission shaft to scrape along the area between the crushing drum and the screening drum, during which larger particles of raw materials can be screened out by the screening drum and continue to move upward under the drive of the material stripping plate, and when the larger particles of raw materials move to the return port, the larger particles of raw materials can fall back into the crushing drum from the return port, so that the larger particles of raw materials can be further crushed under the cooperation of the crushing roller and the friction plate, thereby improving the crushing effect of the crushing roller on the raw materials.

Description

Technical Field

[0001] The present invention belongs to the technical field of crushing equipment, and in particular relates to a crushing equipment for sintered brick raw materials and a method for preparing sintered bricks using the crushing equipment. Background Art

[0002] Sintered bricks are bricks made from clay, shale, coal gangue, or fly ash, formed and fired at high temperatures, and used for both load-bearing and non-load-bearing wall construction. Sintered bricks are characterized by their strength, good sound insulation, and affordability. Despite the emergence of new wall materials, they continue to be widely used in masonry projects.

[0003] When existing sintered bricks are used in building walls, they generally require additional energy-saving and thermal insulation materials to achieve the insulation effect, which is extremely troublesome and the construction cost is also very high. In addition, during the production of sintered bricks, the raw materials need to be pretreated to form particles with a particle size of less than 1.5 mm. The existing pretreatment method mainly uses crushers and grinders to crush the raw materials. When grinding the raw materials, since it is difficult for existing grinders to crush all the raw materials into particles that meet the requirements at one time, the ground raw materials need to be screened after grinding, resulting in low pretreatment efficiency of the raw materials.

[0004] Therefore, it is necessary to invent a sintered brick raw material crushing device and a method for preparing sintered bricks using the same to solve the above problems. Summary of the Invention

[0005] In view of the above problems, the present invention provides a sintered brick raw material crushing device and a method for preparing sintered bricks using the same, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sintered brick raw material crushing equipment and a method for preparing sintered bricks using the same, comprising a crushing box, wherein the top and bottom of the crushing box are respectively provided with a feeding port and a discharging port, a crushing drum is provided in the crushing box, a feeding port and a screening port are respectively provided at the top and bottom of the crushing drum, a connecting pipe is fixedly connected to the top of the feed port, and the connecting pipe is fixedly connected to the feeding port, a screening net is installed in the screening port, a crushing roller is provided in the crushing drum, and arc-shaped friction plates are symmetrically provided on the front and rear sides of the crushing roller, the friction plate is fixedly connected to the inner wall of the crushing drum, the crushing roller is penetrated and inserted with a rotating shaft along the two end directions thereof, one end of the rotating shaft rotates and penetrates the crushing drum and is rotatably connected to the inner wall of the corresponding side of the crushing box, the other end of the rotating shaft rotates and penetrates the crushing drum and the crushing box in turn, and the end of the rotating shaft located outside the crushing box is connected to a first motor;

[0007] The outside of the crushing cylinder is sleeved with a screening cylinder, and the screening diameter of the screening cylinder is smaller than the screening diameter of the screening mesh, and a first connecting ring is fixedly connected between the two sides of the screening cylinder and the inner walls of the crushing box, and a second connecting ring is fixedly connected between the inner walls of the two sides of the screening cylinder and the two sides of the crushing cylinder, a material stripping plate is provided between the screening cylinder and the crushing cylinder, and a plurality of push rods are vertically fixedly connected to the front and rear sides of the material stripping plate, and transmission components are provided on both sides of the material stripping plate, and return holes are opened through the top of the crushing cylinder near the front and rear sides, and a protective component is provided on the top of the return hole.

[0008] Furthermore, the transmission assembly includes a swivel, which is rotatably mounted on the outside of the screening drum, and teeth are evenly distributed on the inner side of the swivel, a guide hole is opened through the side of the screening drum opposite to the swivel, and the guide hole as a whole is a non-closed ring, a connecting block is inserted through the guide hole, and the two ends of the connecting block are fixedly connected to the stripping plate and the swivel respectively, the crushing drum is rotated along its two side directions and inserted with a transmission shaft, the end of the transmission shaft close to the first motor rotates through the screening drum and the crushing box in turn, and the end of the transmission shaft close to the first motor is connected to the second motor, the other end of the transmission shaft rotates through the screening drum, and the end of the transmission shaft away from the second motor is rotatably connected to the box wall corresponding to the crushing box, the position of the transmission shaft opposite to the two swivels is fixedly sleeved with a gear, and the gear is meshed with the teeth on the inner side of the swivel, and a knocking assembly is provided at the bottom of the screening drum.

[0009] Furthermore, the knocking assembly includes a fixed rod, which is arranged parallel to the bottom of the material stripping plate, and both ends of the fixed rod are fixedly connected with connecting plates, and the two connecting plates are respectively fixedly connected to the bottoms of the two rotating rings, and the front and rear sides of the fixed rod are vertically fixedly connected with multiple fixed plates, and the top of the fixed plate is vertically fixedly connected with a spring plate, and the top of the spring plate is fixedly connected with a knocking ball, and the surface of the screening drum is fixedly connected with multiple strip protrusions, and the multiple strip protrusions are distributed in a ring shape, the strip protrusions are parallel to the rotating shaft, and the strip protrusions can contact the knocking ball.

[0010] Furthermore, the protective assembly includes a protective plate, the length of which is greater than the length of the return material port, and the two sides of the protective plate protrude downward and fit with the surface of the crushing cylinder, the bottom of the protective plate is fixedly connected to the side away from the connecting pipe with a baffle matching the return material port, the baffle is inserted in the return material port, and the baffle can contact the push rod, and the protective plate is slidably inserted with an insert plate on the side close to the connecting pipe, and the insert plate is fixedly connected to the connecting pipe.

[0011] Furthermore, a movable plate is slidably inserted at the bottom of the baffle, and the parts on both sides of the movable plate located outside the baffle are vertically fixedly connected with guide rods. A guide groove is provided on the side wall of the crushing cylinder at the corresponding position of the guide rod, and the free end of the guide rod is inserted in the guide groove, and the guide groove is inclined downward on the side close to the connecting pipe.

[0012] Furthermore, bristles are fixedly mounted on the top of the fixing rod, and the bristles are in contact with the outer wall of the screening cylinder.

[0013] Furthermore, the transmission shaft is opposite to the feeding port, and a cover plate is provided on the top of the transmission shaft in the feeding port. The width of the cover plate is greater than the diameter of the transmission shaft, and the two ends of the cover plate are fixedly connected to the inner walls on both sides of the feeding port.

[0014] Furthermore, the length of the material-diverting plate matches the inner length of the screening cylinder, and the height of the material-diverting plate is equal to the distance between the inner wall of the screening cylinder and the outer wall of the crushing cylinder.

[0015] The present invention also provides a method for preparing sintered bricks using any one of the above-mentioned crushing devices, the method comprising the following steps:

[0016] Step 1: Add the raw materials into the crushing drum in the crushing box through the feeding port, so that the raw materials are repeatedly crushed and crushed under the action of the material plate and the crushing roller;

[0017] Step 2: Add the crushed raw materials into a double-shaft mixer for stirring, and add a mixture of mineralizer NaCO3, anhydrous borate and CaF2 during the stirring process;

[0018] The added mineralizer NaCO3 can react with SiO2 under high-temperature calcination to produce NaSiO3 (thermal conductivity 0.02W / (m·k)) and CO2 gas, which can form micropores inside the sintered brick, thereby reducing the thermal conductivity and making the processed sintered brick have good thermal insulation performance. When the sintered bricks fired by the present invention are used for wall construction, the labor cost and time cost caused by the later installation of thermal insulation materials are avoided;

[0019] The added anhydrous borate and CaF2 mixture can reduce the Al-O and Si-O bond energy, which is conducive to the formation of α-3Al2O3·2SiO2 mullite (strength 100Mpa), thereby improving the strength of the finished sintered bricks;

[0020] Step 3: Place the mixed raw materials into the curing chamber and cure for seven days;

[0021] Step 4: Add the prepared raw materials together with water into a high-powered blender and stir until it becomes a mud-like shape;

[0022] Step 5: Add the stirred raw materials into a hard plastic vacuum extruder for extrusion molding, and then cut the extruded blank;

[0023] Step 6: Place the cut blanks into the drying chamber for drying;

[0024] Step 7: Place the dried blank into the kiln for firing, and control the firing temperature at 950°C;

[0025] Step 8: After firing, the finished sintered bricks can be packaged after they have cooled down.

[0026] Technical effects and advantages of the present invention:

[0027] 1. The present invention is provided with a stripper plate. During the process of crushing raw materials, as the second motor is started, the transmission shaft can drive the stripper plate to scrape along the area between the crushing drum and the screening drum through the cooperation of the gear and the rotating ring. In this process, smaller particles of raw materials can directly pass through the screening drum and fall into the crushing box, while larger particles of raw materials can continue to move upward under the drive of the stripper plate. When the push rod on the stripper plate pushes the protective plate to open the return port, the larger particles of raw materials can fall back into the crushing drum through the return port, so that the larger particles of raw materials can be further crushed under the cooperation of the crushing roller and the friction plate, thereby improving the crushing effect of the crushing roller on the raw materials;

[0028] 2. The present invention adds a mixture of mineralizers NaCO3, anhydrous borate, and CaF2 during the stirring process of the raw materials, so that the mineralizer NaCO3 can react with SiO2 under high-temperature calcination to produce NaSiO3 and CO2 gas. The two can form micropores inside the sintered brick, thereby reducing the thermal conductivity and making the processed sintered brick have good thermal insulation performance. When the sintered bricks fired by the firing method provided by the present invention are used for wall construction, the labor cost and time cost caused by the later installation of thermal insulation materials are avoided;

[0029] 3. The present invention is provided with a knocking assembly. In the process of the rotating ring driving the material strip plate to move, the fixed rod is also driven by the material strip plate to move with the material strip plate. As the fixed plate moves, when the fixed plate drives the knocking ball to contact the strip protrusions on the surface of the screening drum, the knocking ball can knock the screening drum through the strip protrusions, thereby shaking off the small particles of raw materials attached to the surface of the screening drum, thereby accelerating the screening efficiency of the raw materials. At the same time, in the process of the fixed rod moving, the bristles on the top of the fixed rod can brush against the outer wall of the screening drum, thereby cleaning the mesh of the screening drum and preventing the screening drum from being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a first stereoscopic schematic diagram of the structures of the screening drum, the transmission assembly and the second motor in the present invention;

[0032] Figure 3 This is a second perspective schematic diagram of the structures of the screening drum, the transmission assembly, and the second motor in the present invention;

[0033] Figure 4 It is a three-dimensional schematic diagram of the crushing cylinder, bristles and part of the transmission components of the present invention;

[0034] Figure 5 It is a three-dimensional schematic diagram of the pulverizing cylinder in the present invention;

[0035] Figure 6 It is a three-dimensional cross-sectional view of the pulverizing cylinder in the present invention;

[0036] Figure 7 It is a three-dimensional schematic diagram of the protective plate, baffle, movable plate and guide rod in the present invention;

[0037] Figure 8 It is a three-dimensional schematic diagram of the material stripping plate, bristles and part of the transmission components in the present invention;

[0038] Figure 9 It is a three-dimensional cross-sectional view of the screening drum in the present invention.

[0039] In the figure: 1. crushing box; 2. crushing cylinder; 3. connecting pipe; 4. screening mesh; 5. crushing roller; 6. friction plate; 7. rotating shaft; 8. first motor; 9. screening cylinder; 10. material plate; 11. push rod; 12. transmission assembly; 120. swivel; 121. guide hole; 122. transmission shaft; 123. second motor; 124. gear; 125. fixing rod; 126. fixing plate; 127. spring; 128. knocking ball; 129. strip protrusion; 13. protection assembly; 131. protection plate; 132. baffle; 133. insert plate; 14. movable plate; 15. guide rod; 16. guide groove; 17. bristles; 18. cover plate. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0041] The present invention provides Figures 1 to 9The sintered brick raw material crushing equipment shown in the figure includes a crushing box 1, the top and bottom of the crushing box 1 are respectively provided with a feeding port and a discharging port, a crushing drum 2 is provided in the crushing box 1, the top and bottom of the crushing drum 2 are respectively provided with a feeding port and a screening port, a connecting pipe 3 is fixedly connected to the top of the feeding port, and the connecting pipe 3 is fixedly connected to the feeding port, a screening net 4 is installed in the screening port, a crushing roller 5 is provided in the crushing drum 2, and arc-shaped friction plates 6 are symmetrically provided on the front and rear sides of the crushing roller 5, and the friction plate 6 is fixedly connected to the inner wall of the crushing drum 2, and the crushing roller 5 is penetrated and inserted with a rotating shaft 7 along the two ends thereof, one end of the rotating shaft 7 rotates to penetrate the crushing drum 2 and is rotatably connected to the inner wall of the corresponding side of the crushing box 1, and the other end of the rotating shaft 7 rotates to penetrate the crushing drum 2 and the crushing box 1 in turn, and the end of the rotating shaft 7 located outside the crushing box 1 is connected to a first motor 8;

[0042] A screening drum 9 is sleeved on the outside of the crushing drum 2, and the screening diameter of the screening drum 9 is smaller than the screening diameter of the screening mesh 4. A first connecting ring is fixedly connected between the two sides of the screening drum 9 and the inner walls of the crushing box 1, and a second connecting ring is fixedly connected between the inner walls of the two sides of the screening drum 9 and the two sides of the crushing drum 2. A diverter plate 10 is provided between the screening drum 9 and the crushing drum 2, and a plurality of push rods 11 are vertically fixedly connected to the front and rear sides of the diverter plate 10. A transmission assembly 12 is provided on both sides of the diverter plate 10. Return holes are opened through the top of the crushing drum 2 near the front and rear sides, and a protective assembly 13 is provided on the top of the return hole. The length of the diverter plate 10 matches the inner length of the screening drum 9, and the height of the diverter plate 10 is equal to the distance between the inner wall of the screening drum 9 and the outer wall of the crushing drum 2;

[0043] When crushing the raw materials, first start the first motor 8, so that the crushing roller 5 starts to rotate under the action of the rotating shaft 7. When the speed of the crushing roller 5 is stable, the raw materials are added to the crushing drum 2 through the feeding port. As the raw materials are added, the raw materials can fall into the position between the inner wall of the crushing drum 2 and the crushing roller 5, so that the raw materials are crushed under the cooperation of the crushing roller 5 and the friction plate 6. Subsequently, the crushed raw materials can pass through the screening net 4 and fall into the screening drum 9. At this time, as the transmission component 12 is started, the transmission component 12 can drive the stripping plate 10 to scrape along the area between the crushing drum 2 and the screening drum 9. At this time, the raw materials falling in this area can move along the inner wall of the screening drum 9 and the outer wall of the crushing drum 2 under the scraping of the stripping plate 10. In this process, smaller particles of raw materials can directly pass through the screen The separating cylinder 9 falls into the crushing box 1 and is finally discharged from the crushing box 1 through the discharge port at the bottom of the crushing box 1, while the larger particles of raw materials can continue to move upward driven by the stripping plate 10. When the push rod 11 on the stripping plate 10 contacts the protective component 13, the push rod 11 can push the protective component 13 to move upward along the outer wall of the crushing cylinder 2, thereby gradually opening the return port. At this time, as the stripping plate 10 continues to move, when the stripping plate 10 moves to the return port with larger particles of raw materials, the larger particles of raw materials can fall back into the crushing cylinder 2 from the return port, so that the larger particles of raw materials can be further crushed under the cooperation of the crushing roller 5 and the friction plate 6, thereby improving the crushing effect of the crushing roller 5 on the raw materials and the overall crushing efficiency of the crushing roller 5.

[0044] like Figures 2 to 9 As shown, the transmission assembly 12 includes a swivel 120, which is rotatably mounted on the outside of the screening drum 9, and the inner side of the swivel 120 is evenly distributed with teeth. A guide hole 121 is opened at the position opposite to the swivel 120 on the side of the screening drum 9, and the guide hole 121 is a non-closed ring as a whole. A connecting block is inserted through the guide hole 121, and the two ends of the connecting block are fixedly connected to the material stripping plate 10 and the swivel 120 respectively. The crushing drum 2 rotates along its two sides and is inserted through a transmission shaft 122. The transmission shaft 122 is close to the guide hole 121. One end of the first motor 8 rotates and passes through the screening drum 9 and the crushing box 1 in sequence, and the end of the transmission shaft 122 close to the first motor 8 is connected to the second motor 123, the other end of the transmission shaft 122 rotates and passes through the screening drum 9, and the end of the transmission shaft 122 away from the second motor 123 is rotatably connected to the box wall on the corresponding side of the crushing box 1, the transmission shaft 122 and the two rotating rings 120 are fixedly sleeved with gears 124, and the gears 124 are meshed with the teeth on the inner side of the rotating ring 120, and a knocking assembly is provided at the bottom of the screening drum 9;

[0045] The knocking assembly includes a fixed rod 125, which is arranged parallel to the bottom of the material stripping plate 10, and both ends of the fixed rod 125 are fixedly connected with a connecting plate, and the two connecting plates are respectively fixedly connected to the bottom of the two swivels 120, and the front and rear sides of the fixed rod 125 are vertically fixedly connected with a plurality of fixed plates 126, and the top of the fixed plate 126 is vertically fixedly connected with a spring piece 127, and the top of the spring piece 127 is fixedly connected with a knocking ball 128, and the surface of the screening drum 9 is fixedly connected with a plurality of strip protrusions 129, and the plurality of strip protrusions 129 are distributed in an annular shape, the strip protrusions 129 are parallel to the rotating shaft 7, and the strip protrusions 129 can contact with the knocking ball 128, and the top of the fixed rod 125 is fixedly installed with bristles 17, and the bristles 17 are in contact with the outer wall of the screening drum 9;

[0046] When the second motor 123 is started, the second motor 123 can drive the transmission shaft 122 to rotate forward and reverse periodically, and as the transmission shaft 122 rotates, the transmission shaft 122 can drive the two rotating rings 120 to rotate through the two gears 124, and as the two rotating rings 120 rotate, the material stripping plate 10 can be driven by the two rotating rings 120 to scrape along the area between the crushing cylinder 2 and the screening cylinder 9. At this time, the raw materials falling in this area can move along the inner wall of the screening cylinder 9 and the outer wall of the crushing cylinder 2 under the scraping of the material stripping plate 10. In this process, smaller particles of raw materials can directly pass through the screening cylinder 9 and fall into the crushing box 1, and finally pass through the crushing box 1 is discharged from the discharge port at the bottom of the crushing box 1, while the larger particles of raw materials can continue to move upward under the drive of the material stripping plate 10. When the push rod 11 on the material stripping plate 10 contacts the protective component 13, the push rod 11 can push the protective component 13 to move upward along the outer wall of the crushing cylinder 2, thereby gradually opening the return port. At this time, as the material stripping plate 10 continues to move, when the material stripping plate 10 moves to the return port with the larger particles of raw materials, the larger particles of raw materials can fall back into the crushing cylinder 2 from the return port, so that the larger particles of raw materials can be further crushed under the cooperation of the crushing roller 5 and the friction plate 6, thereby improving the crushing effect of the crushing roller 5 on the raw materials;

[0047] In addition, when the rotating ring 120 drives the material stripping plate 10 to move, the fixed rod 125 also moves with the material stripping plate 10 under the drive of the material stripping plate 10. As the fixed rod 125 moves, when the fixed rod 125 drives the knocking ball 128 to contact the strip protrusion 129 on the surface of the screening drum 9 through the fixed plate 126, the knocking ball 128 can knock the screening drum 9 through the strip protrusion 129, thereby shaking off the small particles of raw materials attached to the surface of the screening drum 9, thereby accelerating the screening efficiency of the raw materials.

[0048] At the same time, during the movement of the fixed rod 125, the bristles 17 on the top of the fixed rod 125 can brush against the outer wall of the screening drum 9, thereby cleaning the mesh of the screening drum 9 and preventing the screening drum 9 from being blocked.

[0049] like Figures 4 to 7 As shown, the protection assembly 13 includes a protection plate 131, the length of the protection plate 131 is greater than the length of the return port, and both sides of the protection plate 131 protrude downward and fit the surface of the pulverizing cylinder 2. The bottom of the protection plate 131 is fixedly connected to the side away from the connecting pipe 3 with a baffle 132 that matches the return port. The baffle 132 is inserted into the return port and can contact the push rod 11. The side of the protection plate 131 close to the connecting pipe 3 is slidably inserted with an insert plate 133, and the insert plate 133 is fixedly connected to the connecting pipe 3.

[0050] By providing a protective plate 131, when the crushing roller 5 is grinding the raw materials, the protective plate 131 can block the return port, thereby preventing the raw materials added to the crushing drum 2 from directly falling through the return port into the area between the crushing drum 2 and the screening drum 9;

[0051] At the same time, when the second motor 123 drives the two rotating rings 120 to rotate through the two gears 124 on the transmission shaft 122, the stripping plate 10 is driven by the two rotating rings 120 to move with larger particles of raw materials toward the protective plate 131. During this process, the push rod 11 on the stripping plate 10 also gradually approaches the baffle 132. When the push rod 11 contacts the baffle 132 under the drive of the stripping plate 10, the baffle 132 drives the protective plate 131 to move toward the connecting pipe 3 under the push of the push rod 11, so that the return port is gradually opened. At this time, the larger particles of material driven by the stripping plate 10 can re-enter the crushing drum 2 through the return port, and are further crushed under the action of the crushing roller 5, thereby improving the crushing effect of the crushing roller 5 on the material;

[0052] When the larger particles of raw materials re-enter the crushing roller 5, the second motor 123 rotates in the opposite direction, so that the push rod 11 on the material stripping plate 10 is gradually separated from the baffle 132 under the drive of the rotating ring 120. As the push rod 11 separates from the baffle 132, the protective plate 131 slides downward along the surface of the crushing roller 5 under the action of gravity, thereby closing the return port again.

[0053] like Figure 6 and Figure 7 As shown, a movable plate 14 is slidably inserted into the bottom of the baffle 132. Guide rods 15 are vertically fixedly connected to the parts of the movable plate 14 outside the baffle 132 on both sides. Guide grooves 16 are opened on the side walls of the crushing cylinder 2 at positions corresponding to the guide rods 15. The free ends of the guide rods 15 are inserted into the guide grooves 16, and the guide grooves 16 are inclined downward on the side close to the connecting pipe 3.

[0054] By providing the movable plate 14, when the material-diverting plate 10 brings the larger particles of raw materials closer to the baffle 132, the push rod 11 on the material-diverting plate 10 also gradually approaches the baffle 132. When the push rod 11 contacts the baffle 132 under the drive of the material-diverting plate 10, the baffle 132 drives the movable plate 14 to move toward the connecting pipe 3 under the push of the push rod 11. As the movable plate 14 moves, the guide rods 15 on both sides of the movable plate 14 can move along the corresponding guide grooves 16, so that the movable plate 14 is gradually moved closer to the connecting pipe 3 under the cooperation of the guide rods 15 and the guide grooves 16. It moves gradually downward, and as the movable plate 14 moves downward, the movable plate 14 can temporarily block the raw materials on the side of the movable plate 14 close to the connecting pipe 3, reducing the falling speed of the newly added raw materials, and at the same time, it can also prevent the raw materials from falling directly from the return port into the area between the crushing cylinder 2 and the screening cylinder 9 due to excessive falling speed. At the same time, as the return port is gradually opened, when the shifting plate 10 moves to the return port with larger particles of raw materials, the larger particles of raw materials can enter the crushing cylinder 2 through the return port, and then be further crushed under the action of the crushing roller 5.

[0055] like Figure 2 As shown, the transmission shaft 122 is opposite to the feeding port, and a cover plate 18 is provided on the top of the transmission shaft 122 located in the feeding port. The width of the cover plate 18 is greater than the diameter of the transmission shaft 122, and the two ends of the cover plate 18 are fixedly connected to the inner walls on both sides of the feeding port respectively;

[0056] By providing the shielding plate 18 , when raw materials are added into the grinding drum 2 through the feeding port, the shielding plate 18 can shield and protect the transmission shaft 122 , thereby preventing the transmission shaft 122 from being damaged due to prolonged collision with the raw materials.

[0057] The present invention also provides a method for preparing sintered bricks using any one of the above-mentioned crushing equipment, the method comprising the following steps:

[0058] Step 1: Add the raw materials into the crushing drum 2 in the crushing box 1 through the feeding port, so that the raw materials are repeatedly crushed and crushed under the action of the material-diverting plate 10 and the crushing roller 5;

[0059] Step 2: Add the crushed raw materials into a double-shaft mixer for stirring, and add a mixture of mineralizer NaCO3, anhydrous borate and CaF2 during the stirring process;

[0060] The added mineralizer NaCO3 can react with SiO2 under high-temperature calcination to produce NaSiO3 (thermal conductivity 0.02W / (m·k)) and CO2 gas, which can form micropores inside the sintered brick, thereby reducing the thermal conductivity and making the processed sintered brick have good thermal insulation performance. When the sintered bricks fired by the present invention are used for wall construction, the labor cost and time cost caused by the later installation of thermal insulation materials are avoided;

[0061] The added anhydrous borate and CaF2 mixture can reduce the Al-O and Si-O bond energy, which is conducive to the formation of α-3Al2O3·2SiO2 mullite (strength 100Mpa), thereby improving the strength of the finished sintered bricks;

[0062] The particle size of the mineralizer NaCO3 is 1.5-2mm, the flux anhydrous borate and CaFr mixture is mixed in a ratio of 1:1, the particle size is 1.5-2mm, the reaction temperature is 1200℃, and the reaction time is continuous for more than 32 hours;

[0063] Step 3: Place the mixed raw materials into the curing chamber and cure for seven days;

[0064] Step 4: Add the prepared raw materials together with water into a high-powered blender and stir until it becomes a mud-like shape;

[0065] Step 5: Add the stirred raw materials into a hard plastic vacuum extruder for extrusion molding, and then cut the extruded blank;

[0066] Step 6: Place the cut blanks into the drying chamber for drying;

[0067] Step 7: Place the dried blank into the kiln for firing, and control the firing temperature at 950°C;

[0068] Step 8: After the firing is completed, the thermal conductivity is tested to be ≤0.16W / (mk), and the strength is ≥10Mpa, which means that the wall can achieve self-insulation and no further insulation and energy-saving construction is required. After the sintered bricks are cooled, the finished sintered bricks can be packaged.

[0069] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. A sintered brick raw material crushing device, comprising a crushing box (1), characterized in that: The top and bottom of the crushing box (1) are respectively provided with a feeding port and a discharging port, a crushing cylinder (2) is provided in the crushing box (1), a feeding port and a screening port are respectively provided at the top and bottom of the crushing cylinder (2), a connecting pipe (3) is fixedly connected to the top of the feeding port, and the connecting pipe (3) is fixedly connected to the feeding port, a screening net (4) is installed in the screening port, a crushing roller (5) is provided in the crushing cylinder (2), arc-shaped friction plates (6) are symmetrically provided on the front and rear sides of the crushing roller (5), and the friction plates (6) are fixedly connected to the inner wall of the crushing cylinder (2), the crushing roller (5) is penetrated and inserted with a rotating shaft (7) along the two ends thereof, one end of the rotating shaft (7) rotates through the crushing cylinder (2) and is rotatably connected to the inner wall of the corresponding side of the crushing box (1), the other end of the rotating shaft (7) rotates through the crushing cylinder (2) and the crushing box (1) in sequence, and the end of the rotating shaft (7) located outside the crushing box (1) is connected to a first motor (8); The outer portion of the crushing cylinder (2) is sleeved with a screening cylinder (9), and the screening diameter of the screening cylinder (9) is smaller than the screening diameter of the screening net (4). First connecting rings are fixedly connected between the two sides of the screening cylinder (9) and the inner walls of the crushing box (1). Second connecting rings are fixedly connected between the inner walls of the two sides of the screening cylinder (9) and the two sides of the crushing cylinder (2). A material stripping plate (10) is provided between the screening cylinder (9) and the crushing cylinder (2), and a plurality of push rods (11) are vertically fixedly connected to the front and rear sides of the material stripping plate (10). Transmission components (12) are provided on both sides of the material stripping plate (10). Return holes are provided through the top of the crushing cylinder (2) near the front and rear sides, and a protective component (13) is provided on the top of the return hole. The protection assembly (13) includes a protection plate (131), the length of the protection plate (131) is greater than the length of the return port, and both sides of the protection plate (131) protrude downward and fit with the surface of the crushing cylinder (2), a baffle (132) matching the return port is fixedly connected to the bottom of the protection plate (131) away from the connecting pipe (3), the baffle (132) is inserted into the return port, and the baffle (132) can contact the push rod (11), and a plug-in plate (133) is slidably inserted on the side of the protection plate (131) close to the connecting pipe (3), and the plug-in plate (133) is fixedly connected to the connecting pipe (3); A movable plate (14) is slidably inserted into the bottom of the baffle (132), and guide rods (15) are vertically fixedly connected to the parts of both sides of the movable plate (14) located outside the baffle (132). A guide groove (16) is provided on the side wall of the crushing cylinder (2) at a position corresponding to the guide rod (15), and the free end of the guide rod (15) is inserted into the guide groove (16), and the guide groove (16) is tilted downward on the side close to the connecting pipe (3).

2. The sintered brick raw material crushing equipment according to claim 1, characterized in that: The transmission assembly (12) includes a rotating ring (120), which is rotatably mounted on the outside of the screening drum (9), and teeth are evenly distributed on the inside of the rotating ring (120). A guide hole (121) is provided through the side of the screening drum (9) at a position opposite to the rotating ring (120), and the guide hole (121) is a non-closed ring. A connecting block is inserted through the guide hole (121), and the two ends of the connecting block are fixedly connected to the material stripping plate (10) and the rotating ring (120) respectively. The crushing drum (2) is rotatably inserted through a transmission shaft (122) along both sides thereof, and the transmission shaft (122) is close to the guide hole (121). One end near the first motor (8) rotates and passes through the screening drum (9) and the crushing box (1) in sequence, and one end of the transmission shaft (122) near the first motor (8) is connected to the second motor (123), the other end of the transmission shaft (122) rotates and passes through the screening drum (9), and one end of the transmission shaft (122) away from the second motor (123) is rotationally connected to the box wall on the corresponding side of the crushing box (1), the position of the transmission shaft (122) relative to the two rotating rings (120) is fixedly sleeved with a gear (124), and the gear (124) is meshed with the teeth on the inner side of the rotating ring (120), and a knocking component is provided at the bottom of the screening drum (9).

3. The sintered brick raw material crushing equipment according to claim 2, characterized in that: The knocking assembly includes a fixed rod (125), the fixed rod (125) is arranged parallel to the bottom of the material-selecting plate (10), and both ends of the fixed rod (125) are fixedly connected to connecting plates, and the two connecting plates are fixedly connected to the bottoms of the two rotating rings (120) respectively. The front and rear sides of the fixed rod (125) are vertically fixedly connected to a plurality of fixed plates (126), the top of the fixed plate (126) is vertically fixedly connected to a spring (127), and the top of the spring (127) is fixedly connected to a knocking ball (128). The surface of the screening drum (9) is fixedly connected to a plurality of strip protrusions (129), and the plurality of strip protrusions (129) are distributed in a ring shape. The strip protrusions (129) are parallel to the rotating shaft (7), and the strip protrusions (129) can contact the knocking ball (128).

4. The sintered brick raw material crushing equipment according to claim 3, characterized in that: Brush bristles (17) are fixedly mounted on the top of the fixed rod (125), and the brush bristles (17) are in contact with the outer wall of the screening cylinder (9).

5. The sintered brick raw material crushing equipment according to claim 4, characterized in that: The transmission shaft (122) is positioned opposite to the feed port, and a cover plate (18) is provided on the top of the transmission shaft (122) located in the feed port. The width of the cover plate (18) is greater than the diameter of the transmission shaft (122), and both ends of the cover plate (18) are fixedly connected to the inner walls on both sides of the feed port.

6. The sintered brick raw material crushing equipment according to claim 5, characterized in that: The length of the material-diverting plate (10) matches the inner length of the screening cylinder (9), and the height of the material-diverting plate (10) is equal to the distance between the inner wall of the screening cylinder (9) and the outer wall of the crushing cylinder (2).

7. A method for preparing fired bricks using the fired brick raw material crushing equipment according to claim 6, characterized in that: The method comprises the following steps: Step 1: Add the raw materials into the crushing drum (2) in the crushing box (1) through the feeding port, so that the raw materials are repeatedly crushed and crushed under the action of the material-dispensing plate (10) and the crushing roller (5); Step 2: Add the crushed raw materials into a double-shaft mixer for stirring, and add a mixture of mineralizer NaCO3, anhydrous borate and CaF2 during the stirring process; Step 3: Place the mixed raw materials into the curing chamber and cure for seven days; Step 4: Add the prepared raw materials together with water into a high-powered blender and stir until it becomes a mud-like shape; Step 5: Add the stirred raw materials into a hard plastic vacuum extruder for extrusion molding, and then cut the extruded blank; Step 6: Place the cut blanks into the drying chamber for drying; Step 7: Place the dried blank into the kiln for firing, and control the firing temperature at 950°C; Step 8: After firing, the finished sintered bricks can be packaged after they have cooled down.

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