Slurry spray drying device for ceramic tile production

Abstract

The utility model discloses a slurry spray drying device for ceramic tile production, which comprises a storage barrel, a heater, a feeding barrel, a drying tower, a cyclone separator, a bag-type dust collector, an air blower, an induced draft fan and a feeding pump, the feeding pump is arranged at the bottom of a discharging barrel, the feeding barrel is arranged at the top of the drying tower, the feeding pump is connected with the feeding barrel through a feeding pipe, and the drying tower is arranged on the drying tower. An atomizing nozzle is mounted at the bottom of the feeding barrel and located at the upper end in the drying tower, a gas distributor is mounted in the drying tower, an outlet of the cyclone separator is connected with an inlet of the bag-type dust collector, the induced draft fan is mounted at an outlet of the bag-type dust collector, the air return port is connected with the recovery port, and an inner barrel is arranged in the drying tower; according to the utility model, the inner cylinder is arranged inside the drying tower, the inner cylinder structure can control the flow channel of hot air flow and atomized slurry and prolong the contact time of the hot air flow and the atomized slurry so as to achieve a better drying effect, and meanwhile, the stirrer is additionally arranged in the storage barrel, so that the slurry is effectively prevented from depositing and caking.

Description

Technical Field

[0001] The utility model relates to the technical field of ceramic tile raw material production, in particular to a slurry spray drying device for ceramic tile production. Background Art

[0002] Spray drying is a method of applying systematic technology to material drying. After the thin material is atomized in the drying chamber, the water vaporizes rapidly in contact with hot air, and the dry product is obtained. This method can directly dry solutions and emulsions into powder or granular products, eliminating the evaporation and crushing processes. Through mechanical action, the material to be dried is dispersed into very fine mist-like particles (increasing the water evaporation area and accelerating the drying process). When in contact with hot air, most of the water is removed instantly, and the solid matter in the material is dried into powder.

[0003] In the production process of ceramic tiles, a channel spray dryer is often required. The fineness and dryness of the dried ceramic powder affect the product quality of the ceramic tiles after production. At the same time, saving energy is the main goal of ceramic tile manufacturers to reduce costs. This application provides a spray drying device with fine ceramic powder and waste heat that can be recycled. Utility Model Content

[0004] The utility model aims to provide a slurry spray drying device for tile production.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A slurry spray drying device for tile production, comprising a storage barrel, a heater, a feed barrel, a drying tower, a cyclone separator, a bag dust collector, a blower, an induced draft fan and a feed pump, wherein the feed pump is installed at the bottom of the storage barrel, the feed barrel is installed at the top of the drying tower, the feed pump is connected to the feed barrel through a feed pipe, an atomizing nozzle is installed at the bottom of the feed barrel, the atomizing nozzle is located at the upper end of the drying tower, a gas distributor is installed in the drying tower, the gas distributor is connected to one end of the air inlet pipe through a connecting pipe, the other end of the air inlet pipe is connected to the blower, the heat of the drying tower The air outlet is connected to the inlet of the cyclone separator through an air outlet pipe, the outlet of the cyclone separator is connected to the inlet of the bag-type dust collector, the induced draft fan is installed at the outlet of the bag-type dust collector, the outlet of the bag-type dust collector is connected with the air outlet and the recovery port through a tee, the inlet of the blower is connected with the fresh air inlet and the return air port through a tee, the return air port is connected with the recovery port, an inner cylinder is provided inside the drying tower, the outer side of the inner cylinder is connected to the inner wall of the drying tower through a mounting connecting rod, the gas distributor is located inside the inner cylinder and below the atomizing nozzle, and the lower end of the inner cylinder is provided with a mounting slot for the connecting pipe to pass through.

[0007] Furthermore, an agitator is installed in the storage barrel, and the agitator is transmission-connected to a stirring motor on the top of the storage barrel. The agitator stirs the slurry evenly, so that the slurry pumped into the feed barrel and the atomizing nozzle is more uniform.

[0008] Furthermore, a control valve is provided on each of the fresh air inlet, return air outlet, air outlet and recovery outlet. By controlling the switch state of the valve, the exhaust gas with waste heat is blown into the return air outlet from the recovery outlet and then heated by the heater to achieve the purpose of waste heat recovery and reduce energy consumption.

[0009] Furthermore, the gas distributor is an annular structure.

[0010] Furthermore, the bottoms of the drying tower, the cyclone separator and the bag dust collector are respectively installed with a discharge valve 1, a discharge valve 2 and a discharge valve 3.

[0011] In summary, the utility model has the following beneficial effects: the utility model arranges an inner cylinder inside the drying tower, and the flow path of the hot air flow and the atomized slurry can be controlled by setting the inner cylinder structure, thereby increasing the contact time between the two to achieve a better drying effect. At the same time, an agitator is added to the storage barrel to effectively avoid slurry deposition and agglomeration. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a structural diagram of the drying tower part.

[0014] In the figure, 1. storage barrel; 2. heater; 3. feed barrel; 4. drying tower; 5. cyclone separator; 6. bag filter; 7. blower; 8. induced draft fan; 9. stirring motor; 10. stirrer; 11. feeding pump; 12. feeding pipe; 13. atomizing nozzle; 14. fresh air inlet; 15. return air outlet; 16. air inlet pipe; 17. discharge valve one; 18. air outlet pipe; 19. discharge valve two; 20. discharge valve three; 21. air outlet; 22. recovery port; 23. gas distributor; 24. inner cylinder; 25. mounting connecting rod; 26. mounting slot; 27. connecting pipe; 28. hot air outlet. DETAILED DESCRIPTION

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] like Figure 1-2 As shown, a slurry spray drying device for tile production includes a storage barrel 1, a heater 2, a feed barrel 3, a drying tower 4, a cyclone separator 5, a bag dust collector 6, a blower 7, an induced draft fan 8 and a feed pump 11, wherein the feed pump 11 is installed at the bottom of the storage barrel 1, the feed barrel 3 is installed at the top of the drying tower 4, the feed pump 11 is connected to the feed barrel 3 through a feed pipe 12, an atomizing nozzle 13 is installed at the bottom of the feed barrel 3, the atomizing nozzle 13 is located at the upper end of the drying tower 4, a gas distributor 23 is installed in the drying tower 4, the gas distributor 23 is connected to one end of the air inlet pipe 16 through a connecting pipe 27, the other end of the air inlet pipe 16 is connected to the blower 7, and the hot air of the drying tower 4 The outlet 28 is connected to the inlet of the cyclone separator 5 through the air outlet pipe 18, and the outlet of the cyclone separator 5 is connected to the inlet of the bag-type dust collector 6. The induced draft fan 8 is installed at the outlet of the bag-type dust collector 6, and the outlet of the bag-type dust collector 6 is connected with the air outlet 21 and the recovery port 22 through a tee. The inlet of the blower 7 is connected with the fresh air inlet 14 and the return air port 15 through a tee, and the return air port 15 is connected with the recovery port 22. An inner cylinder 24 is provided inside the drying tower 4, and the outer side of the inner cylinder 24 is connected to the inner wall of the drying tower 4 through a mounting connecting rod 25. The gas distributor 23 is located inside the inner cylinder 24 and below the atomizing nozzle 13, and the lower end of the inner cylinder 24 is provided with a mounting slot 26 for the connecting pipe 27 to pass through.

[0017] Further, such as Figure 1 As shown, a stirrer 10 is installed in the storage barrel 1, and the stirrer 10 is transmission-connected to the stirring motor 9 on the top of the storage barrel 1. The stirrer 10 stirs the slurry evenly, so that the slurry pumped into the feed barrel 3 and the atomizing nozzle 13 is more uniform.

[0018] Furthermore, a control valve is provided on each of the fresh air inlet 14, the return air port 15, the air outlet 21 and the recovery port 22. By controlling the switch state of the valve, the exhaust gas with waste heat is blown into the return air port 15 from the recovery port 22, and then heated by the heater 2, so as to achieve the purpose of waste heat recovery and reduce energy consumption.

[0019] Furthermore, the gas distributor 23 is an annular structure.

[0020] Furthermore, a discharge valve 17, a discharge valve 2 19 and a discharge valve 3 20 are installed at the bottom of the drying tower 4, the cyclone separator 5 and the bag filter 6 respectively.

[0021] Working principle: After grinding, filtering, iron removal and other processes, the slurry of the ceramic tile is placed in the storage barrel 1 for storage, and then pumped to the feed barrel 3 and pressurized by the feeding pump 11. The pressurized slurry is sprayed out through the atomizing nozzle 13, and the atomized slurry entering the drying tower 4 is in convection contact with the hot air sprayed out of the inner cylinder 24. The airflow will drop the powder through the outer wall of the inner cylinder to the bottom of the drying tower 4. The structural design of the inner cylinder 24 improves the air duct, delays the falling speed of the powder formed after drying, and improves the drying effect. The hot air after drying enters the cyclone separator 5 through the outlet pipe 18. The cyclone separator 5 separates and collects the solid powder from the gas, and the exhaust gas continues to enter the bag dust collector 6 for re-filtration to collect the filtered powder. Finally, the gas is discharged through the induced draft fan 8. At the same time, the exhaust gas with waste heat can be sent back to the return air port 15 of the blower 7 through the pipeline to recover the waste heat.

[0022] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as the modifications are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A slurry spray drying device for tile production, comprising a storage barrel (1), a heater (2), a feed barrel (3), a drying tower (4), a cyclone separator (5), a bag dust collector (6), a blower (7), an induced draft fan (8) and a feed pump (11), wherein the feed pump (11) is installed at the bottom of the storage barrel (1), the feed barrel (3) is installed at the top of the drying tower (4), the feed pump (11) is connected to the feed barrel (3) through a feed pipe (12), and an atomizing nozzle (13) is installed at the bottom of the feed barrel (3), and the atomizing nozzle (13) 3) Located at the upper end of the drying tower (4), a gas distributor (23) is installed in the drying tower (4), the gas distributor (23) is connected to one end of the air inlet pipe (16) through a connecting pipe (27), the other end of the air inlet pipe (16) is connected to the blower (7), the hot air outlet (28) of the drying tower (4) is connected to the inlet of the cyclone separator (5) through the air outlet pipe (18), the outlet of the cyclone separator (5) is connected to the inlet of the bag dust collector (6), the induced draft fan (8) is installed at the outlet of the bag dust collector (6), and is characterized in that: The outlet of the bag filter (6) is connected to an air outlet (21) and a recovery port (22) via a tee, the inlet of the blower (7) is connected to a fresh air inlet (14) and a return air port (15) via a tee, the return air port (15) is connected to the recovery port (22), an inner cylinder (24) is provided inside the drying tower (4), the outer side of the inner cylinder (24) is connected to the inner wall of the drying tower (4) via a mounting connecting rod (25), the gas distributor (23) is located inside the inner cylinder (24) and below the atomizing nozzle (13), and a mounting slot (26) for a connecting pipe (27) to pass through is provided at the lower end of the inner cylinder (24).

2. A slurry spray drying device for tile production according to claim 1, characterized in that: A stirrer (10) is installed in the material storage barrel (1), and the stirrer (10) is drivingly connected to a stirring motor (9) at the top of the material storage barrel (1).

3. A slurry spray drying device for tile production according to claim 2, characterized in that: A control valve is provided on each of the fresh air inlet (14), the return air outlet (15), the air outlet (21) and the recovery outlet (22).

4. A slurry spray drying device for tile production according to claim 3, characterized in that: The gas distributor (23) is an annular structure.

5. A slurry spray drying device for tile production according to claim 4, characterized in that: A discharge valve 1 (17), a discharge valve 2 (19) and a discharge valve 3 (20) are respectively installed at the bottom of the drying tower (4), the cyclone separator (5) and the bag filter (6).

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