Production line for preparing ceramic particles from fly ash

Abstract

The production line comprises mixing equipment, granulation equipment, drying equipment and screening equipment which are connected in sequence, the mixing equipment comprises a barrel, the barrel is provided with a discharging port and a plurality of feeding ports, a stirring device is arranged in the barrel, and the screening equipment comprises a base, a driving device, a screening device and a drawing device. The screening device is mounted on the base and is driven by the driving device to vibrate, the screening device comprises a box body and a plurality of screens which are mounted in the box body and are distributed up and down and have different pore diameters, an inlet and an air outlet are formed in the top of the box body, a slag discharging opening is formed in the bottom of the box body, and discharging openings corresponding to the corresponding screens are formed in the side wall of the box body; a filtering device is arranged at the air outlet; and the drawing device is respectively connected with the air outlet of the box body and the air inlet of the barrel body. According to the production line for manufacturing the pottery particles from the fly ash, screening separation and cooling of the pottery particles from the fly ash are carried out at the same time, meanwhile, the material mixing uniformity can be improved, and the product quality is improved.

Description

Technical Field

[0001] The present invention relates to a fly ash ceramsite production line, belonging to the technical field of ceramsite production equipment. Background Art

[0002] As a by-product of waste incineration, fly ash contains a relatively high amount of heavy metals and dioxin-like substances, so it is classified as hazardous waste. For better treatment and utilization, fly ash can be washed and other processed, and then mixed with an appropriate amount of other materials (such as sludge, shale, etc.) in a certain proportion, and then processed through granulation, sintering, and screening to obtain ceramsite for construction and horticulture use. The temperature of the just-sintered ceramsite is very high and needs to be cooled before screening and separation. Currently, the cooling process and screening and separation are carried out separately, requiring two sets of equipment, occupying a large space and affecting production efficiency. At the same time, materials such as sludge are usually not completely dried, and are easily adhered into blocks, making it impossible to mix various materials evenly and affecting product quality. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a fly ash ceramsite production line that simultaneously performs screening and separation and cooling of fly ash ceramsite, and can improve the mixing uniformity of materials and product quality, and can solve the deficiencies of the prior art.

[0004] The technical solution of the present invention is: a fly ash ceramsite production line, including a mixing device, a granulating device, a drying device, and a screening device connected in sequence. The mixing device includes a cylinder body, the cylinder body has a discharge port and several feed ports, and a stirring device is arranged inside the cylinder body. The screening device includes a base, a driving device, a screening device, and a suction device. The screening device is installed on the base and driven to vibrate by the driving device. The screening device includes a box body, and several upper and lower screens with different pore sizes are installed inside the box body. The top of the box body has an inlet and an air outlet, the bottom has a slag discharge port, and the side wall has a discharge port corresponding to the corresponding screen. The cylinder body has an air inlet and an air outlet, and a filtering device is arranged at the air outlet. The suction device is respectively connected to the air outlet of the box body and the air inlet of the cylinder body.

[0005] Further, several spaced partitions are respectively arranged on both sides inside the box body, and the partitions are located above the screens, forming a return air duct for ceramsite to pass through.

[0006] Further, the top cross-section of the partition is in an inclined serrated shape.

[0007] Further, the box body includes an upper box body and a lower box body connected in communication. The upper box body and the lower box body are connected by an elastic hose. The upper box body is fixedly installed on the base, the feed port is located on the upper box body, and a closing air device is installed inside the upper box body.

[0008] Furthermore, the box is installed on the base through a plurality of elastic parts, the driving device includes a rapper installed on the box, and the screen is arranged obliquely in the box.

[0009] Furthermore, the box body has a screen installation opening, and a slide groove matching the screen is provided in the box body, and the screen is detachably installed in the box body by slidingly connecting with the slide groove.

[0010] Furthermore, a handle is provided on one side of the screen, and when the screen is installed in the box through the screen installation opening, the handle is sealed with the screen installation opening.

[0011] Furthermore, a plurality of blocking members are connected to the side walls of the box body, and the blocking members cooperate with and block the screen by rotating.

[0012] Furthermore, the stirring device comprises a rotating shaft driven to rotate by a motor, the rotating shaft is provided with stirring blades, and the bottom of the cylinder is provided with a grinding disc, and filter holes are distributed on the grinding disc.

[0013] Furthermore, a gap is formed between the grinding disc and the stirring blade, and a protrusion is provided on the upper surface of the grinding disc.

[0014] By implementing the present invention, ceramsite is mixed by a mixing device, produced by a granulating device, sintered by a drying device, and then enters a screening device. When entering the screening device, it falls on the screen. The driving device drives the box to vibrate, so that the screen screens the ceramsite. Ceramic ceramsite of different specifications is screened out and discharged from corresponding discharge ports respectively, and the broken slag is discharged from the slag discharge port. The extraction device is connected to the top of the box to extract in the box, and cold air is formed in the box to flow in the opposite direction to the ceramsite, so that the ceramsite being screened is fully contacted with the cold air, and the screening, separation and cooling of the ceramsite are carried out simultaneously, thereby improving the production efficiency. After the cold air has heat exchanged with the ceramsite, the temperature rises and is extracted by the extraction device into the stirring device, and the material being stirred is blown and dried, so that the material is mixed more evenly, which is beneficial to improving the quality of the ceramsite. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the present invention;

[0016] Figure 2 A three-dimensional view of the screening equipment;

[0017] Figure 3 is a side view of the screening device;

[0018] Figure 4 for Figure 3 A magnified image of point A;

[0019] Figure 5 is a schematic diagram of a mixing device;

[0020] Figure 6 A top view of the mixing equipment.

[0021] As shown in the figure: mixing device 1; pelletizing device 2; drying device 3; screening device 4; cylinder body 5; suction device 6; box body 7; screen 8; vibrator 9; filtering device 10; partition 11; upper box body 12; lower box body 13; elastic corrugated pipe 14; air lock 15; handle 16; resistance member 17; rotating shaft 18; stirring blade 19; filter hole 20; grinding disc 21; protrusion 22; inclined surface 23; blocking surface 24; storage bin 25; screw weigher 26; base 27; spring 28; slag discharge port 29. Specific implementation mode

[0022] Embodiment of the present invention: As Figures 1 to 6 shown, a fly ash ceramsite production line includes a mixing device 1, a pelletizing device 2, a drying device 3, and a screening device 4 that are connected in sequence. A storage bin 25 and a weighing device such as a screw weigher 26 are provided in front of the mixing device 1. Various materials required for making ceramic materials are stored in the storage bin 25 respectively. After being transported and weighed by the screw weigher 26, they enter the mixing device 1 for mixing. The mixing device 1 includes a cylinder body 5. The top of the cylinder body 5 has a feed inlet and the bottom has a discharge outlet. A stirring device is provided inside the cylinder body 5. After the materials are stirred and mixed, they enter the pelletizing device 2 to produce ceramsite. After being sintered by the drying device 3, they enter the screening device 4. The screening device 4 includes a base 27, a driving device, a screening device, and a suction device 6. The screening device is installed on the base 27 and is driven to vibrate by the driving device. The screening device includes a box body 7 and several screens 8 with different pore diameters distributed up and down inside the box body 7. The pore diameters of the screens 8 from top to bottom decrease in sequence. The top of the box body 7 has an inlet and an air outlet, the bottom has a slag discharge port 29, and the side wall has a discharge port corresponding to the corresponding screen 8. The box body 7 is supported and installed on the base 27 by several springs 28. The driving device includes a vibrator 9 installed on the box body 7. The screen 8 is inclined inside the box body 7. By the vibrator 9, the box body 7 vibrates elastically, so that the ceramsite falling on the screen 8 is conveyed along the lower end of the screen 8 and discharged from the discharge port, and the crushed slag is discharged from the slag discharge port 29 at the bottom. During this process, the suction device 6 sucks the inside of the box body 2, and natural air enters the box body 7 from the discharge port and the slag discharge port and flows upward, forming a cold air flowing in the opposite direction to the ceramsite to contact the ceramsite for cooling, realizing the simultaneous screening separation and cooling of the ceramsite, improving the production efficiency. The cylinder body 5 of the mixing device 1 has an air inlet and an air outlet, and a filtering device 10 is provided at the air outlet. The suction device 6 is respectively connected to the air outlet of the box body 2 and the air inlet of the cylinder body 5. After the cold air exchanges heat with the ceramsite and warms up, the powder in the ceramsite is taken into the cylinder body 5 together and blows and dries the materials being stirred, making the materials mix more evenly, and finally being discharged after being filtered by the filtering device 10 at the air outlet.

[0023] As a preferred embodiment, several spaced partitions 11 are provided on both sides of the box body 2, and the partitions 11 are located above the screen 8 to form a meandering air duct for the expanded clay to pass through. After the expanded clay enters the inlet at the top of the box body 7, it falls on the partition 11 and falls from top to bottom along the meandering air duct to the screen 8. Under the suction action of the suction device 6, the cold air cools the expanded clay from bottom to top along the meandering air duct. The tortuous structure reduces the falling speed of the expanded clay, increases the contact time and distance with the cold air, and improves the cooling effect.

[0024] As a preferred embodiment, the top cross-section of the partition 11 is inclined serrated, with several inclined surfaces 23 and blocking surfaces 24, which are beneficial to the falling speed of the expanded clay and prolong the cooling time, while the blocking surface 24 prevents the expanded clay from flowing back.

[0025] As a preferred embodiment, the box body 7 includes an upper box body 12 and a lower box body 13 which are connected to each other. The upper box body 12 and the lower box body 13 are connected by an elastic bellows 14. The lower box body 13 is elastically supported on a base 27 by a spring 28. The upper box body 12 is fixedly connected to the base 27 by a connecting piece. The feed port is located on the upper box body 12. The extraction device 6 is also connected to the upper box body 12. A matching air lock 15 is provided in the upper box body 12. The vibrator 9, the partition 11 and the screen 8 are connected to each other. They are all installed on the lower box body 13. The ceramsite enters the upper box body 12 and then enters the lower box body 13 through the air lock 15. After passing through the circular air duct formed by the partition 11, it falls on the screen 8 for screening and separation. The setting of the air lock 15 prevents the imported air from entering the extraction device 6 during extraction work. At the same time, the vibrator 9 only drives the lower box body 13 to vibrate. The upper box body 12 is fixedly set and does not vibrate together with the lower box body 13. It can be stably connected with the extraction device 6, which is also convenient for the stable input of ceramsite from the feed port.

[0026] As a preferred embodiment, the box 7 has a screen installation port, and a slide groove matching the screen 8 is provided in the box 7. The screen 8 enters and exits the box 7 through the installation port and is detachably installed in the box 7, so that the screen 8 with different diameter holes can be conveniently replaced according to needs to screen the expanded clay.

[0027] As a preferred embodiment, a handle 16 is provided on one side of the screen 8. When the screen 3 is installed in the box 7 through the screen installation opening, the handle side is sealed with the screen installation opening, and the screen 8 can be easily pulled and disassembled by holding the handle 16.

[0028] As a preferred embodiment, a plurality of stoppers 17 are connected to the side walls of the box body 7 , and the stoppers 17 cooperate with and stop the screen 8 by rotating, thereby facilitating the fixed installation of the screen 8 .

[0029] As a preference, the stirring device includes a rotating shaft 18 driven by a motor to rotate. The rotating shaft 18 vertically enters the cylinder body 5 from top to bottom. The rotating shaft 18 is provided with stirring blades 19 which stir and crush the materials in the cylinder body 5. A grinding disc 21 is provided at the bottom of the cylinder body 5. Filter holes 20 are distributed on the grinding disc 21. The grinding disc 21 is located above the discharge port. After the stirring blades 19 stir and crush the materials, the materials pass through the grinding disc 21 for filtration and then enter the granulating device 2 through the discharge port, so that the materials are evenly mixed after being crushed. During the stirring process, the suction device 6 blows the gas after heat exchange with the ceramsite into the cylinder body 5 from top to bottom to blow-dry the materials, and then discharges the gas through the filter device 10 after filtration from the air outlet.

[0030] As a preference, a gap is formed between the grinding disc 21 and the stirring blades 19. The upper surface of the grinding disc 21 has protrusions 22. The large-particle materials are ground and crushed between the stirring blades 19 and the grinding disc 21 and then discharged through the filter holes 20. The protrusions 22 cooperate to grind and crush the garbage, improving the crushing speed and effect.

Claims

1. A fly ash ceramsite production line, comprising a mixing device, a granulating device, a drying device, and a screening device connected in sequence. The mixing device includes a cylinder body, the cylinder body has a discharge port and a plurality of feed ports, and a stirring device is arranged in the cylinder body. It is characterized in that: The screening equipment includes a base, a driving device, a screening device, and an extraction device. The screening device is installed on the base and driven to vibrate by the driving device. The screening device includes a box body, and several screens with different upper and lower distribution apertures installed in the box body. The box body has an inlet and an air outlet on the top, a slag discharge port on the bottom, and a material discharge port corresponding to the corresponding screen on the side wall. The cylinder body has an air inlet and an air outlet, and a filtering device is provided at the air outlet. The extraction device is respectively connected to the air outlet of the box body and the air inlet of the cylinder body.

2. The ceramsite production line from fly ash according to claim 1, characterized in that: A plurality of partitions are arranged at intervals on both sides of the box body, and the partitions are located above the screen to form a meandering air duct for the ceramsite to pass through.

3. The ceramsite production line for fly ash according to claim 2, wherein: The top cross section of the partition is in an inclined sawtooth shape.

4. The ceramsite production line for fly ash according to claim 1, wherein: The box body comprises an upper box body and a lower box body which are connected to each other. The upper box body and the lower box body are connected by an elastic hose. The upper box body is fixedly mounted on a base. The feed inlet is located on the upper box body. A matching air lock is installed in the upper box body.

5. The ceramsite production line from fly ash according to claim 1, characterized in that: The box body is installed on the base through a plurality of elastic members, the driving device comprises a rapper installed on the box body, and the screen is arranged obliquely in the box body.

6. The ceramsite production line from fly ash according to claim 5, characterized in that: The box body has a screen installation opening, and a slide groove matched with the screen is arranged in the box body. The screen is detachably installed in the box body by slidingly connecting with the slide groove.

7. The ceramsite production line from fly ash according to claim 6, characterized in that: A handle is provided on one side of the screen. When the screen is installed in the box through the screen installation opening, the handle is sealed with the screen installation opening.

8. The ceramsite production line from fly ash according to claim 6, characterized in that: A plurality of blocking members are connected to the side wall of the box body, and the blocking members cooperate with and block the screen by rotating.

9. The ceramsite production line from fly ash according to claim 1, characterized in that: The stirring device comprises a rotating shaft driven to rotate by a motor, the rotating shaft is provided with stirring blades, the bottom of the cylinder is provided with a grinding disc, and filter holes are distributed on the grinding disc.

10. The ceramsite production line from fly ash according to claim 9, characterized in that: A gap is formed between the grinding disc and the stirring blade, and a protrusion is provided on the upper surface of the grinding disc.

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