Treatment device for melting and converting fly ash into harmless ceramsite

Abstract

The invention relates to the technical field of ceramsite casting through fly ash melting, in particular to a harmless ceramsite treatment device through fly ash melting conversion, and solves the problems that after the ceramsite is manufactured through fly ash melting, when the ceramsite is subjected to centralized polishing, existing polishing equipment can only conduct single-time polishing on the ceramsite, so that the polishing time is long, and the polishing efficiency is low. The harmless ceramsite treatment device comprises a melting furnace, a centrifugal granulator, a ceramsite grabbing mechanism and a grinding device, the melting furnace is connected with the centrifugal granulator through a pipeline, the ceramsite grabbing mechanism is located between the centrifugal granulator and the grinding device, a feeding hopper is fixed to the top end of the grinding device, and a discharging hopper is fixed to the top end of the grinding device. And a discharging opening is formed in the bottom end of the melting furnace, a grinding bin is arranged in the grinding equipment, and a filling block is installed on the inner side of the grinding bin. According to the ceramsite grinding device, prepared ceramsite can be subjected to graded grinding, the grinding time is effectively shortened, the grinding efficiency is improved, and the qualified rate of the ground ceramsite is increased.

Description

Technical Field

[0001] This invention relates to the field of fly ash melting and casting ceramic aggregate technology, specifically to a fly ash melting and conversion device for harmless ceramic aggregate treatment. Background Technology

[0002] Currently, the main treatment for hazardous waste is incineration. However, the fly ash after incineration is still hazardous waste and needs to be landfilled. The heavy metals and dioxins in the fly ash can cause secondary pollution and waste land resources, so it is necessary to treat the fly ash.

[0003] Fly ash melting refers to adding additives to the fly ash to be treated and using high-temperature combustion to process the fly ash into a molten fluid. Different materials can be added to the molten fluid to obtain different materials. For example, adding clay can produce ceramsite, thus realizing the secondary utilization of fly ash.

[0004] After the ceramsite is manufactured by melting fly ash, the existing grinding equipment can only grind the ceramsite once, resulting in long grinding time and low grinding efficiency. Therefore, it does not meet the current needs. To address this, we propose a fly ash melting and conversion harmless ceramsite treatment device. Summary of the Invention

[0005] The purpose of this invention is to provide a fly ash melting and conversion harmless ceramsite treatment device to solve the problems mentioned in the background art, such as the existing grinding equipment can only grind the ceramsite once after it has been manufactured by melting fly ash, resulting in long grinding time and low grinding efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a fly ash melting and conversion harmless ceramsite treatment device, comprising a melting furnace, a centrifugal granulator, a ceramsite grabbing mechanism, and a grinding device. The melting furnace and the centrifugal granulator are connected by a pipeline. The ceramsite grabbing mechanism is located between the centrifugal granulator and the grinding device. A feed funnel is fixed at the top of the grinding device. A discharge port is opened at the bottom of the melting furnace. A grinding chamber is provided inside the grinding device. A filling block is installed on the inner side of the grinding chamber. Support rods are fixed at both the upper and lower ends of the filling block. The filling block is fixedly connected to the grinding device through the support rods.

[0007] A ceramic aggregate grinding module is installed between the filling block and the grinding equipment. The ceramic aggregate grinding module includes multiple separation and isolation rings. The separation and isolation rings are fixed to the inner wall of the grinding chamber at equal intervals. A fixed grinding ring is embedded between two adjacent separation and isolation rings. A grinding rotating ring is installed on the inner side of the fixed grinding ring. The grinding rotating ring is attached to the outer wall of the filling block and a rotating connecting ring is fixed on its inner surface. The rotating connecting ring is rotatably engaged with the filling block and a grinding toothed ring is fixed on its inner surface. A synchronous gear is meshed with the inner side of the grinding toothed ring. A synchronous shaft is fixed through the axis of the synchronous gear. Both ends of the synchronous shaft are rotatably inserted into the inner wall of the filling block, and a transmission gear is fixed on the outer surface of the bottom end. A drive gear is meshed with one side of the transmission gear. A grinding motor is installed below the drive gear. The grinding motor is fixed to the filling block and its output shaft is fixed to the drive gear.

[0008] Preferably, the inner surface of the fixed grinding ring is provided with an upper grinding slope, a transition arc surface and a lower guiding slope, and the outer surface of the grinding rotating ring is provided with a guiding slope, a gathering slope, a grinding slope and an anti-stagnation slope.

[0009] Preferably, the grinding upper inclined surface, the transition arc surface, and the material guiding lower inclined surface form a V-shaped groove on the inner surface of the fixed grinding ring, and the grinding slope and the anti-retention slope form a V-shaped protrusion on the outer surface of the grinding rotating ring. The V-shaped protrusion and the V-shaped groove form an annular channel with a V-shaped cross section.

[0010] Preferably, the inclination angle of the guiding slope is 5-10 degrees, the inclination angle of the gathering slope is 50-60 degrees, and the inclination angle of the grinding slope is 25-35 degrees.

[0011] Preferably, the distance between the upper grinding slope and the grinding ramp gradually decreases from top to bottom, while the distance between the lower guiding slope and the anti-retention ramp gradually increases from top to bottom.

[0012] Preferably, the spacing between the separation and isolation rings and the filler blocks decreases layer by layer, and the spacing between the bottommost separation and isolation rings and the filler blocks is the final grinding size of the ceramic particles.

[0013] Preferably, the upper and lower surfaces of the rotating connecting ring are provided with annular protrusions, and the inner side of the filling block is provided with an annular groove limiting groove, and the annular protrusions are engaged in the annular groove limiting groove.

[0014] Preferably, the surface of the annular protrusion that contacts the filling block and the upper and lower surfaces of the rotating connecting ring are provided with a plurality of spherical grooves arranged in a circular array around the center of the rotating connecting ring.

[0015] Preferably, the ball groove is movably embedded with balls, and the rotating connecting ring and the annular protrusion make rolling contact with the filling block using balls.

[0016] Preferably, there is a gap between the upper and lower surfaces of the grinding toothed ring and the inner wall of the filling block, and the size of the gap is the thickness of the portion of the ball protruding from the rotating connecting ring.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This invention connects and starts the grinding motor. After the grinding motor starts, it drives the synchronous shaft to rotate through the drive gear and transmission gear. When the synchronous shaft rotates, it drives the synchronous gear to rotate, which in turn drives the rotating connecting ring and the grinding rotating ring to rotate simultaneously. When the grinding rotating ring rotates, it grinds the ceramsite located between the grinding rotating ring and the fixed grinding ring through the grinding slope on its outer surface and the grinding slope on the inner surface of the fixed grinding ring. After grinding, the ceramsite that meets the requirements will pass through the fixed grinding ring and the grinding rotating ring to enter the next layer of grinding rotating ring and fixed grinding ring, and be ground again until the size of the ceramsite meets the final requirements. The ceramsite that meets the final requirements or passes through the bottom layer of grinding rotating ring and fixed grinding ring and leaves the melting furnace from the discharge port can be graded and ground, effectively shortening the grinding time and improving the grinding efficiency.

[0019] 2. This invention achieves layered grinding of ceramsite by gradually decreasing the spacing between the separation ring and the filler block. One grinding device can perform multiple grinding processes simultaneously. Compared with existing rework grinding, it effectively shortens the grinding time and improves work efficiency. It also ensures that only ceramsite that meets the grinding requirements of the current layer can slide down, avoiding premature flow of non-compliant ceramsite and increasing the pass rate of the ground ceramsite. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the grinding equipment of the present invention;

[0022] Figure 3 For the present invention Figure 2 Enlarged view of the structure at point A in the middle;

[0023] Figure 4 This is a schematic diagram of the structure of the ceramic particle grinding module of the present invention;

[0024] Figure 5 This is a schematic diagram of the grinding rotating ring of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the fixed grinding ring of the present invention.

[0026] In the diagram: 1. Melting furnace; 2. Centrifugal granulator; 3. Ceramsite grabbing mechanism; 4. Grinding equipment; 5. Feed hopper; 6. Ceramsite grinding module; 601. Grinding rotating ring; 6011. Guide slope; 6012. Aggregating slope; 6013. Grinding slope; 6014. Anti-retention slope; 602. Rotary connecting ring; 603. Grinding toothed ring; 604. Synchronous gear; 605. Synchronous shaft; 606. Separation isolation ring; 607. Fixed grinding ring; 6071. Grinding upper inclined surface; 6072. Transition arc surface; 6073. Guide lower inclined surface; 608. Transmission gear; 609. Drive gear; 610. Grinding motor; 7. Grinding chamber; 8. Filling block; 9. Support rod; 10. Discharge port. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] The grinding motor (model 5IK60RGN-CF) mentioned in this invention can be obtained from the market or through private customization.

[0029] like Figures 1 to 6 As shown, the present invention provides a fly ash melting and conversion harmless ceramsite treatment device, including a melting furnace 1, a centrifugal granulator 2, a ceramsite grabbing mechanism 3, and a grinding device 4. The melting furnace 1 and the centrifugal granulator 2 are connected by a pipeline. The ceramsite grabbing mechanism 3 is located between the centrifugal granulator 2 and the grinding device 4. A feed funnel 5 is fixed at the top of the grinding device 4. A discharge port 10 is opened at the bottom of the melting furnace 1. A grinding chamber 7 is provided inside the grinding device 4. A filling block 8 is installed on the inner side of the grinding chamber 7. Support rods 9 are fixed at both the upper and lower ends of the filling block 8. The filling block 8 and the grinding device 4 are fixedly connected by the support rods 9.

[0030] like Figures 2 to 6As shown, a ceramic aggregate grinding module 6 is installed between the filling block 8 and the grinding equipment 4. The ceramic aggregate grinding module 6 includes multiple separation and isolation rings 606. The separation and isolation rings 606 are fixed to the inner wall of the grinding chamber 7 at equal intervals. A fixed grinding ring 607 is embedded between two adjacent separation and isolation rings 606. A grinding rotating ring 601 is installed on the inner side of the fixed grinding ring 607. The grinding rotating ring 601 is attached to the outer wall of the filling block 8 and a rotating connecting ring 602 is fixed on its inner surface. The rotating connecting ring 602 is rotatably engaged with the filling block 8 and a grinding toothed ring 603 is fixed on its inner surface. A synchronous gear 60 is meshed with the inner side of the grinding toothed ring 603. 4. A synchronous shaft 605 is fixed through the axis of the synchronous gear 604. Both ends of the synchronous shaft 605 are rotatably inserted into the inner wall of the filler block 8, and a transmission gear 608 is fixed on the outer surface of the bottom end. A drive gear 609 is meshed on one side of the transmission gear 608. A grinding motor 610 is installed below the drive gear 609. The grinding motor 610 is fixed to the filler block 8 and its output shaft is fixed to the drive gear 609. The grinding motor 610 can drive all the grinding rotating rings 601 to rotate simultaneously. When the grinding rotating rings 601 rotate, they will drive the ceramic particles located between them and the fixed grinding rings 607 to roll, thereby realizing the grinding process of the ceramic particles.

[0031] The inner surface of the fixed grinding ring 607 is provided with an upper grinding slope 6071, a transition arc surface 6072, and a lower guiding slope 6073. The outer surface of the grinding rotating ring 601 is provided with a guiding slope 6011, a gathering slope 6012, a grinding slope 6013, and an anti-retention slope 6014. The upper grinding slope 6071, the transition arc surface 6072, and the lower guiding slope 6073 form a V-shaped groove on the inner surface of the fixed grinding ring 607. The grinding slope 6013 and the anti-retention slope 6014 form a V-shaped protrusion on the outer surface of the grinding rotating ring 601. The V-shaped protrusion and the V-shaped groove form an annular channel with a V-shaped cross section. The V-shaped annular channel allows the ceramic particles to be ground as they slide down, and reduces the impact force of the ceramic particles sliding down.

[0032] The inclination angle of the guiding slope 6011 is 5-10 degrees, the inclination angle of the gathering slope 6012 is 50-60 degrees, and the inclination angle of the grinding slope 6013 is 25-35 degrees. The distance between the grinding upper slope 6071 and the grinding slope 6013 gradually decreases from top to bottom, while the distance between the material guiding lower slope 6073 and the anti-retention slope 6014 gradually increases from top to bottom. This ensures that the ceramsite will only fall after it has been ground and meets the requirements of layer-by-layer grinding, and that the ground ceramsite will not get stuck between the material guiding lower slope 6073 and the anti-retention slope 6014 when it falls.

[0033] The upper and lower surfaces of the rotating connecting ring 602 are provided with annular protrusions, and the inner side of the filling block 8 is provided with an annular groove limiting groove. The annular protrusions are engaged in the annular limiting grooves. The surfaces of the annular protrusions that contact the filling block 8 and the upper and lower surfaces of the rotating connecting ring 602 are provided with multiple ball grooves arranged in a circular array around the center of the rotating connecting ring 602. Balls are movably embedded in the ball grooves. The rotating connecting ring 602 and the annular protrusions and the filling block 8 are in rolling contact with the ball. By using the embedded ball, the frictional resistance between the rotating connecting ring 602 and the filling block 8 during rotation can be reduced, thereby increasing the rotational speed of the rotating connecting ring 602 and the grinding rotating ring 601.

[0034] There is a gap between the upper and lower surfaces of the grinding toothed ring 603 and the inner wall of the filler block 8. The size of the gap is the thickness of the part of the ball protruding from the rotating connecting ring 602. This ensures that the grinding toothed ring 603 will not rub against the filler block 8 when it rotates with the rotating connecting ring 602, thus avoiding a reduction in the rotation speed of the rotating connecting ring 602 due to the friction of the grinding toothed ring 603.

[0035] The spacing between the separation and isolation ring 606 and the filling block 8 decreases layer by layer. The spacing between the bottommost separation and isolation ring 606 and the filling block 8 is the final grinding size of the ceramsite, ensuring that the ceramsite passes through layer by layer and is ground layer by layer. This increases the grinding process of the ceramsite to improve the pass rate of the ground ceramsite.

[0036] When processing ceramsite using the above-mentioned ceramsite processing device, fly ash and ceramsite raw materials are first added to the melting furnace 1 and heated. The molten fluid generated after heating is added to the centrifugal granulator 2 through a pipe. Then, the centrifugal granulator 2 is powered on and operates. The molten fluid will form irregularly shaped granules in the centrifugal granulator 2. After the centrifugal granulator 2 finishes processing, the centrifugal granulator 2 is turned on, and the ceramsite grabbing mechanism 3 is activated to grab the shaped ceramsite and feed it into the feed hopper 5. The ceramsite will enter the grinding equipment 4 through the feed hopper 5 and be guided by the top of the filling block 8 to the surrounding area of ​​the filling block 8, so that the ceramsite falls between the grinding rotating ring 601 and the fixed grinding ring 607.

[0037] At this time, the power supply to the grinding motor 610 is turned on and it is started. After the grinding motor 610 starts, it drives the synchronous shaft 605 to rotate through the drive gear 609 and the transmission gear 608. When the synchronous shaft 605 rotates, it drives the synchronous gear 604 to rotate, which in turn drives the rotating connecting ring 602 and the grinding rotating ring 601 to rotate simultaneously. When the grinding rotating ring 601 rotates, it uses the grinding slope 6013 on its outer surface and the grinding upper inclined surface 6071 on the inner surface of the fixed grinding ring 607 to grind the grinding rotating ring 602 and the fixed grinding ring 601. The ceramsite between 0.7 and 0.7 is ground. After grinding, the ceramsite that meets the requirements will pass through the fixed grinding ring 607 and the grinding rotating ring 601 and enter the next layer of grinding rotating ring 601 and fixed grinding ring 607, and be ground again until the size of the ceramsite meets the final requirements. The ceramsite that meets the final requirements will pass through the bottom grinding rotating ring 601 and fixed grinding ring 607 and leave the melting furnace 1 from the discharge port 10. The prepared ceramsite can be graded and ground, which can effectively shorten the grinding time, improve the grinding efficiency, and increase the qualified rate of the ground ceramsite.

[0038] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A fly ash melting and conversion harmless ceramsite treatment device, comprising a melting furnace (1), a centrifugal granulator (2), a ceramsite grabbing mechanism (3), and a grinding device (4), wherein the melting furnace (1) and the centrifugal granulator (2) are connected by a pipeline, and the ceramsite grabbing mechanism (3) is located between the centrifugal granulator (2) and the grinding device (4), characterized in that: The grinding equipment (4) is fixed with a feed hopper (5) at the top and a discharge port (10) is opened at the bottom of the melting furnace (1). The grinding equipment (4) is provided with a grinding chamber (7) inside. A filling block (8) is installed on the inner side of the grinding chamber (7). Support rods (9) are fixed at both the upper and lower ends of the filling block (8). The filling block (8) and the grinding equipment (4) are fixedly connected by the support rods (9). A ceramic aggregate grinding module (6) is installed between the filling block (8) and the grinding equipment (4). The ceramic aggregate grinding module (6) includes multiple separation isolation rings (606). The separation isolation rings (606) are fixed at equal intervals on the inner wall of the grinding chamber (7). A fixed grinding ring (607) is embedded between two adjacent separation isolation rings (606). A grinding rotating ring (601) is installed on the inner side of the fixed grinding ring (607). The grinding rotating ring (601) is attached to the outer wall of the filling block (8) and a rotating connecting ring (602) is fixed on its inner surface. The rotating connecting ring (602) is rotatably engaged with the filling block (8). A grinding toothed ring (603) is fixed on the inner surface of the filling block (8). A synchronous gear (604) is meshed with the inner side of the grinding toothed ring (603). A synchronous shaft (605) is fixed through the axis of the synchronous gear (604). The two ends of the synchronous shaft (605) are rotatably inserted into the inner wall of the filling block (8), and a transmission gear (608) is fixed on the outer surface of the bottom end. A drive gear (609) is meshed on one side of the transmission gear (608). A grinding motor (610) is installed below the drive gear (609). The grinding motor (610) is fixed to the filling block (8), and the output shaft end is fixed to the drive gear (609).

2. The fly ash melting and conversion harmless ceramsite treatment device according to claim 1, characterized in that: The inner surface of the fixed grinding ring (607) is provided with an upper grinding slope (6071), a transition arc surface (6072), and a lower guiding slope (6073). The outer surface of the grinding rotating ring (601) is provided with a guiding slope (6011), a gathering slope (6012), a grinding slope (6013), and an anti-stagnation slope (6014).

3. The fly ash melting and conversion harmless ceramsite treatment device according to claim 2, characterized in that: The grinding upper inclined surface (6071), transition arc surface (6072) and guide lower inclined surface (6073) form a V-shaped groove on the inner surface of the fixed grinding ring (607), and the grinding slope surface (6013) and the anti-retention slope surface (6014) form a V-shaped protrusion on the outer surface of the grinding rotating ring (601). The V-shaped protrusion and the V-shaped groove form an annular channel with a V-shaped cross section.

4. The fly ash melting and conversion harmless ceramsite treatment device according to claim 3, characterized in that: The inclination angle of the guiding slope (6011) is 5-10 degrees, the inclination angle of the gathering slope (6012) is 50-60 degrees, and the inclination angle of the grinding slope (6013) is 25-35 degrees.

5. The fly ash melting and conversion harmless ceramsite treatment device according to claim 4, characterized in that: The distance between the upper grinding slope (6071) and the grinding slope (6013) gradually decreases from top to bottom, while the distance between the lower guiding slope (6073) and the anti-retention slope (6014) gradually increases from top to bottom.

6. The fly ash melting and conversion harmless ceramsite treatment device according to claim 1, characterized in that: The spacing between the separation and isolation ring (606) and the filling block (8) decreases layer by layer, and the spacing between the bottommost separation and isolation ring (606) and the filling block (8) is the final grinding size of the ceramic particles.

7. The fly ash melting and conversion harmless ceramsite treatment device according to claim 1, characterized in that: The upper and lower surfaces of the rotating connecting ring (602) are provided with annular protrusions, and the inner side of the filling block (8) is provided with an annular groove limiting groove, and the annular protrusions are engaged in the annular limiting groove.

8. The fly ash melting and conversion harmless ceramsite treatment device according to claim 7, characterized in that: The surface of the annular protrusion that contacts the filling block (8) and the upper and lower surfaces of the rotating connecting ring (602) are provided with multiple spherical grooves arranged in a circular array around the center of the rotating connecting ring (602).

9. The fly ash melting and conversion harmless ceramsite treatment device according to claim 8, characterized in that: The ball groove is movably embedded with balls, and the rotating connecting ring (602) and the annular protrusion are in rolling contact with the filling block (8) by ball rolling.

10. The fly ash melting and conversion harmless ceramsite treatment device according to claim 9, characterized in that: There is a gap between the upper and lower surfaces of the grinding toothed ring (603) and the inner wall of the filling block (8), and the size of the gap is the thickness of the portion of the ball protruding rotating connecting ring (602).

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