Oxide target spray drying device

Abstract

The utility model discloses an oxide target spray drying device which comprises a shell and an upper cover fixed to the shell in a bolt sealing mode, a feeding pipe connected with the upper cover in a welded mode penetrates through the upper cover, the bottom end of the feeding pipe is connected with a spray disc, and a hot air spray disc is fixed to the inner wall of the upper cover in a hoisting mode. Hot air spraying holes are uniformly formed in the bottom surface of the hot air spraying disc; the outer circle of the hot air spraying disc is sleeved with a lantern ring, a set of symmetrically-distributed cleaning columns penetrate through the lantern ring, and evenly-distributed through holes are formed in the wall bodies of the cleaning columns. According to the oxide target spray drying device, fog drops are adhered to the surface of the cleaning column while the cleaning column cleans the inner wall of the shell, the cleaning column rotates synchronously and axially while doing circular motion, centrifugal force generated when the cleaning column rotates can throw out the fog drops on the surface, then the self-cleaning purpose is achieved, material waste is effectively eradicated, and the service life of the device is prolonged. The cleanliness of the inner wall of the equipment is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of spray drying, in particular to an oxide target material spray drying device. Background Art

[0002] Oxide targets are widely used in transparent conductive films, magnetic materials and other fields, such as coating preparation, surface processing, etc. They are also an important component of solar cell devices.

[0003] When preparing oxide targets, the raw materials need to be ground into fine powder, then mixed with other materials, and then sintered and formed;

[0004] For example, the prior art (CN102134702A) discloses a method for preparing AZO powder and planar and rotary target materials by spray drying process, which discloses that the AZO powder is uniformly wet mixed and granulated by spray drying process to form AZO powder, and the AZO powder prepared by spray drying process, so the slurry after the powder mixing needs to use spray drying equipment,

[0005] For spray drying equipment, the prior art (CN220459922U) discloses a dryer for zinc oxide production, in which a scraper on a movable rod cleans the inner wall of the spray drying tower, thereby preventing zinc oxide from adhering to the inner wall of the spray drying tower. Although the inner wall of the equipment can be cleaned by the scraper, since the scraper and other related components are also located inside the equipment, when the material is spray-dried inside the equipment, not only will the material adhere to the inner wall of the equipment, but also to the scraper and other related components, which not only causes material waste, but also affects the operation of the scraper and related components.

[0006] In view of the defects existing in the above prior art, it is necessary to further improve it to make it more practical so as to meet the actual usage. Utility Model Content

[0007] The purpose of the utility model is to provide an oxide target spray drying device to solve the problems raised by the above background technology.

[0008] To achieve the above object, the utility model provides the following technical solution: an oxide target spray drying device, comprising a housing, and an upper cover sealed and fixed with bolts to the housing,

[0009] The upper cover is penetrated by a feed pipe welded thereto, the bottom end of the feed pipe is connected to a spray plate, a hot air spray plate is hoisted and fixed to the inner wall of the upper cover, and hot air spray holes are evenly opened on the bottom surface of the hot air spray plate;

[0010] A collar is sleeved on the outer circle of the hot air spray plate, a group of symmetrically distributed cleaning columns penetrate the collar, and evenly distributed through holes are opened on the wall of the cleaning column;

[0011] The outer wall of the collar is sleeved with a gear ring welded thereto, the gear ring is meshed with a gear, the gear is fixed to the rotating column, the rotating column passes through the upper cover and is connected to the upper cover bearing, and the upper cover is provided with a first transmission mechanism for driving the rotating column to rotate;

[0012] The sleeve ring is provided with a second transmission mechanism, and the hot air spray disc passes the hot air into the cleaning column through the second transmission mechanism and simultaneously drives the cleaning column to rotate axially.

[0013] As the preferred technical solution:

[0014] In the oxide target spray drying device as described above, the hot air spray disc is in the shape of a hollow ring, and the hot air spray disc and the spray disc share a common axis.

[0015] Through the above technical solution, the spray plate is located at the center of the inner circle of the hot air spray plate. The spray plate can spray the slurry in a mist horizontally and spray it toward the bottom of the hot air spray plate. The airflow sprayed from the hot air spray plate through the hot air nozzle can contact the mist liquid to achieve drying.

[0016] In the oxide target spray drying device as described above, the collar is a hollow annular structure, and the inner circle of the collar is open. The top and bottom surfaces of the hot gas spray disc are both welded with fixing rings, and the inner circle walls of the top and bottom ends of the collar are both sealed and connected to the fixing ring bearing.

[0017] Through the above technical solution, the sleeve ring and the hot gas spray disc are coaxial, so that the sleeve ring can be fixed on the fixed ring and can rotate axially on the fixed ring.

[0018] In the oxide target spray drying device as described above, the cleaning column is a hollow tubular structure with a closed bottom and an open top, and the cleaning column is connected to a sleeve bearing.

[0019] Through the above technical solution, the structural design of the cleaning column ensures that after the hot air enters the interior, it can only be ejected from the through hole. The ejected airflow can be blown toward the inner wall of the shell, and then the droplets adhering to the inner wall of the shell are blown off by the airflow to avoid drying and agglomeration.

[0020] In the above oxide target spray drying device, the first transmission mechanism comprises a transmission box welded and fixed on the upper cover, and a hot air inlet pipe and a first connecting pipe connected to the transmission box, and the bottom end of the first connecting pipe passes through the upper cover and is welded and connected to the hot air spray disc;

[0021] The top end of the rotating column extends into the transmission box and is fixed with a first blade by a snap pin.

[0022] Through the above technical solution, the hot air inlet pipe is docked with an external hot air blower, and then hot air can enter the hot air spraying disc through the transmission box and the first connecting pipe. When the hot air flows in the transmission box, the air flow can impact the first blade, and then drive the rotating column to rotate axially.

[0023] In an oxide target spray drying device as described above, the second transmission mechanism includes a gas collecting ring. The cross section of the gas collecting ring is in a "C" shape. The outer circle of the gas collecting ring is open and is hermetically connected to the rotating ring bearing.

[0024] The inner circle of the gas collecting ring is welded and connected to one end of the second connecting pipe. The other end of the second connecting pipe penetrates through the hot air spraying disc and extends into the first connecting pipe. The second connecting pipe is hermetically welded to the hot air spraying disc.

[0025] The second transmission mechanism further includes a transmission cover welded and fixed to the inner wall of the collar. The outer wall of the transmission cover is respectively welded and connected with a third connecting pipe and a fourth connecting pipe. The third connecting pipe is welded and connected to the rotating ring.

[0026] The top end of the cleaning column extends into the transmission cover and is fixed with a second blade by a snap pin. One end of the fourth connecting pipe passes through the center of the top surface of the transmission cover and is hermetically connected to the top end of the cleaning column by a bearing. The fourth connecting pipe is hermetically welded to the top wall of the transmission cover.

[0027] Through the above technical solution, part of the hot air in the first connecting pipe enters the interior of the hot air spraying disc, and part enters the interior of the second connecting pipe. The air in the second connecting pipe enters the rotating ring and the interior of the rotating ring, and finally enters the transmission cover through the third connecting pipe. When the air flow flows inside the transmission cover, it will impact the second blade, and then drive the cleaning column to rotate axially. The cleaning column uses the off-line force generated by its own rotation to throw off the mist liquid adhering to its surface, avoiding the drying and caking of the mist liquid on its surface.

[0028] Compared with the prior art, the beneficial effects of the present utility model are:

[0029] (1) In this oxide target spray drying device, a cleaning column is provided, and hot air is introduced into the cleaning column. The air can be ejected from the through holes on the cleaning column and blown towards the inner wall of the housing. Then, the impact force generated by the air flow is used to blow off the mist liquid adhering to the inner wall of the housing. Moreover, the cleaning column moves in a circular motion along the inside of the housing, so that the inner wall of the housing can be comprehensively cleaned.

[0030] (2) In the oxide target spray drying device, when the cleaning column is cleaning the inner wall of the shell, mist droplets will adhere to its surface. When the cleaning column is performing circular motion, it will also rotate axially synchronously. The centrifugal force generated when the cleaning column rotates can throw out the mist droplets on the surface, thereby achieving the purpose of self-cleaning, effectively eliminating material waste, and ensuring the cleanliness of the inner wall of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a front view longitudinal section of the utility model;

[0032] Figure 2 This is a top view of the interior of the utility model;

[0033] Figure 3 This is a three-dimensional diagram of the fixing box and sleeve of the utility model;

[0034] Figure 4 This is a three-dimensional diagram of the horizontal plate and the fixing box of the utility model;

[0035] Figure 5 For this utility model Figure 1 Enlarged view of point A in the middle;

[0036] In the figure: 1. shell; 2. upper cover; 3. feed pipe; 4. spray disc; 5. hot air spray disc; 6. collar; 7. cleaning column; 8. through hole; 9. hot air spray hole; 10. gear ring; 11. gear; 12. rotating column; 13. hot air inlet pipe; 14. transmission box; 15. first connecting pipe; 16. first blade; 17. air collecting ring; 18. rotating ring; 19. second connecting pipe; 20. third connecting pipe; 21. fourth connecting pipe; 22. second blade; 23. transmission cover; 24. fixing ring. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0038] See also Figure 1-Figure 5 The utility model provides a technical solution: an oxide target spray drying device,

[0039] like Figure 1-2As shown in the figure, it includes a housing 1 and an upper cover 2 bolted and sealed to the housing 1. A feed pipe 3 welded to it penetrates through the upper cover 2. The bottom end of the feed pipe 3 is connected to a spray disk 4. A hot air spray disk 5 is hoisted and fixed on the inner wall of the upper cover 2. The bottom surface of the hot air spray disk 5 is evenly provided with hot air spray holes 9. The hot air spray disk 5 is a hollow circular ring, and the hot air spray disk 5 and the spray disk 4 share the same axis.

[0040] The material in the slurry tank is pumped into the spray disk 4 through the feed pipe 3 under the action of a pump and finally sprayed in the form of mist. The spray disk 4 can spray hot air downward through the hot air spray disk 5. After the sprayed hot air contacts the mist liquid, drying can be achieved, and the dried material can fall out from the bottom of the housing 1.

[0041] As Figure 1 and Figure 3 shown in the figure, a collar 6 is sleeved on the outer circle of the hot air spray disk 5. The collar 6 is a hollow circular ring structure, and the inner circle of the collar 6 is open. Fixed rings 24 are welded and fixed on both the top surface and the bottom surface of the hot air spray disk 5. The inner circular walls at the top and bottom ends of the collar 6 are both connected to the fixed rings 24 in a bearing and sealed manner. A gear ring 10 welded to it is sleeved on the outer circular wall of the collar 6. The gear ring 10 is meshed with a gear 11. The gear 11 is fixed to a rotating column 12. The rotating column 12 penetrates through the upper cover 2 and is connected to the upper cover 2 in a bearing manner. A first transmission mechanism for driving the rotation of the rotating column 12 is arranged on the upper cover 2. The first transmission mechanism includes a transmission box 14 welded and fixed on the upper cover 2, a hot air inlet pipe 13 and a first communication pipe 15 connected to the transmission box 14. The bottom end of the first communication pipe 15 penetrates through the upper cover 2 and is welded and communicated with the hot air spray disk 5. The top end of the rotating column 12 extends into the transmission box 14 and a first blade 16 is fixed by a snap pin.

[0042] When the hot air flows inside the transmission box 14, it will drive the rotating column 12 to rotate axially on the upper cover 2 through the first blade 16. The gear 11 will rotate synchronously with the rotating column 12 and drive the collar 6 to rotate axially on the hot air spray disk 5 through the gear ring 10.

[0043] As Figure 2 、 Figure 4 and Figure 5 shown in the figure, a second transmission mechanism is arranged on the collar 6. The hot air spray disk 5 passes the hot air into the cleaning column 7 through the second transmission mechanism and simultaneously pushes the cleaning column 7 to rotate axially. The second transmission mechanism includes a gas collecting ring 17. The cross-section of the gas collecting ring 17 is in a "C" shape. The outer circle of the gas collecting ring 17 is open and is connected to a rotating ring 18 in a bearing and sealed manner. The inner circle of the gas collecting ring 17 is welded and communicated with one end of a second communication pipe 19. The other end of the second communication pipe 19 penetrates through the hot air spray disk 5 and extends into the first communication pipe 15. The second communication pipe 19 is sealed and welded to the hot air spray disk 5.

[0044] The second transmission mechanism also includes a transmission cover 23 welded and fixed on the inner wall of the ring 6, and the outer wall of the transmission cover 23 is respectively welded with a third connecting pipe 20 and a fourth connecting pipe 21, the third connecting pipe 20 is welded and connected to the rotating ring 18, the top end of the cleaning column 7 extends into the transmission cover 23 and is fixed with a second blade 22 by a pin, one end of the fourth connecting pipe 21 passes through the center of the top surface of the transmission cover 23 and is sealed and connected to the top bearing of the cleaning column 7, and the fourth connecting pipe 21 is seal-welded to the top wall of the transmission cover 23.

[0045] The air collecting ring 17 and the rotating ring 18 can be combined into a closed hollow ring structure for collecting air. When the hot air in the first connecting pipe 15 partially enters the second connecting pipe 19, the hot air will enter between the air collecting ring 17 and the rotating ring 18 through the second connecting pipe 19, and then enter the transmission cover 23 through the third connecting pipe 20. When the air flows inside the transmission cover 23, it will drive the cleaning column 7 to rotate axially through the second blades 22, and finally the hot air will flow out from the fourth connecting pipe 21 and enter the inside of the cleaning column 7.

[0046] When the collar 6 rotates axially, the transmission cover 23, the third connecting pipe 20 and the rotating ring 18 will rotate synchronously. The rotating ring 18 and the gas collecting ring 17 are connected by bearings, which can ensure smooth flow of gas and continuously drive the cleaning column 7 to rotate, and the structure is reasonable.

[0047] like Figure 1 As shown, a group of symmetrically distributed cleaning columns 7 are passed through the collar 6, and evenly distributed through holes 8 are opened on the wall of the cleaning columns 7. The cleaning columns 7 are hollow tubular structures with a closed bottom end and an open top end. The cleaning columns 7 are connected to the collar 6 bearing.

[0048] When the collar 6 rotates axially on the hot air spray disc 5 through the fixing ring 24, the two cleaning columns 7 are driven to make circular motions about the axis of the shell 1. During this process, the hot air inside the cleaning column 7 is sprayed from the through hole 8 to the inner wall of the shell 1. When the hot air contacts the droplets adhering to the inner wall, the hot air can dry the droplets into particles. The dried particles are separated from the inner wall of the shell 1 under the blowing of the airflow, thereby achieving the purpose of cleaning the inner wall of the shell 1.

[0049] In addition, the cleaning column 7 can rotate synchronously while performing circular motion, and the mist liquid adhering to the surface thereof can be thrown out by the centrifugal force generated by the rotation, so as to prevent the mist liquid from drying and agglomerating on the surface thereof.

[0050] In order to improve the cleaning effect, a polytetrafluoroethylene coating is attached to the surface of the cleaning column 7 and the inner wall of the shell 1. The polytetrafluoroethylene coating has a non-stick property and can reduce the adhesion of the mist liquid.

[0051] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An oxide target spray drying device, comprising a housing (1) and an upper cover (2) bolted and sealed to the housing (1). Features: The upper cover (2) is penetrated by a feed pipe (3) welded thereto. The bottom end of the feed pipe (3) is connected to a spray disc (4). A hot gas spray disc (5) is hoisted and fixed to the inner wall of the upper cover (2). The bottom surface of the hot gas spray disc (5) is evenly provided with hot gas spray holes (9). A collar (6) is sleeved on the outer circumference of the hot gas spray disc (5). A group of symmetrically distributed cleaning columns (7) penetrate through the collar (6). Through holes (8) evenly distributed are formed in the wall of the cleaning column (7). A gear ring (10) welded to it is sleeved on the outer circumferential wall of the collar (6). The gear ring (10) is meshed with a gear (11). The gear (11) is fixed to a rotating column (12). The rotating column (12) penetrates through the upper cover (2) and is connected to the upper cover (2) by a bearing. A first transmission mechanism for driving the rotating column (12) to rotate is arranged on the upper cover (2). A second transmission mechanism is arranged on the collar (6). The hot gas spray disc (5) passes hot gas into the cleaning column (7) through the second transmission mechanism and synchronously pushes the cleaning column (7) to rotate axially.

2. The oxide target spray drying device according to claim 1, characterized in that: The hot gas spray disc (5) is a hollow circular ring shape, and the hot gas spray disc (5) and the spray disc (4) share the same axis.

3. The oxide target spray drying device according to claim 1, characterized in that: The collar (6) is a hollow circular ring-shaped structure, and the inner circle of the collar (6) is open. Fixed rings (24) are welded and fixed to both the top surface and the bottom surface of the hot gas spray disc (5). The inner circumferential walls at the top end and the bottom end of the collar (6) are hermetically connected to the fixed rings (24) by bearings.

4. The oxide target spray drying device according to claim 1, characterized in that: The cleaning column (7) is a hollow tubular structure, with its bottom end closed and its top end open. The cleaning column (7) is connected to the collar (6) by a bearing.

5. The oxide target spray drying device according to claim 1, characterized in that: The first transmission mechanism includes a transmission box (14) welded and fixed to the upper cover (2), a hot gas inlet pipe (13) and a first communication pipe (15) connected to the transmission box (14). The bottom end of the first communication pipe (15) penetrates through the upper cover (2) and is welded and communicated with the hot gas spray disc (5). The top end of the rotating column (12) extends into the transmission box (14) and is fixed with a first blade (16) by a snap pin.

6. The oxide target spray drying device according to claim 1, characterized in that: The second transmission mechanism includes a gas collecting ring (17). The cross section of the gas collecting ring (17) is in an "L" shape. The outer circumference of the gas collecting ring (17) is open and is hermetically connected to a rotating ring (18) by a bearing. The inner circle of the gas collecting ring (17) is welded and communicated with one end of a second communication pipe (19). The other end of the second communication pipe (19) penetrates through the hot gas spray disc (5) and extends into the first communication pipe (15). The second communication pipe (19) is hermetically welded to the hot gas spray disc (5).

7. The oxide target spray drying device according to claim 6, characterized in that: The second transmission mechanism further includes a transmission cover (23) welded and fixed to the inner wall of the collar (6). The outer wall of the transmission cover (23) is respectively welded and communicated with a third communication pipe (20) and a fourth communication pipe (21). The third communication pipe (20) is welded and communicated with the rotating ring (18). The top end of the cleaning column (7) extends into the transmission cover (23) and is fixed with a second blade (22) by a latch; one end of the fourth connecting pipe (21) passes through the center of the top surface of the transmission cover (23) and is sealed and connected to the top bearing of the cleaning column (7); the fourth connecting pipe (21) is sealed and welded to the top wall of the transmission cover (23).

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