Centrifugal spray dryer

Abstract

The utility model belongs to the technical field of drying machines, and particularly relates to a centrifugal spray drying machine which comprises a main tower, a barrel is fixedly connected to the bottom end of the main tower, a discharging hopper is arranged at the bottom of the barrel, a filtering assembly is installed in the discharging hopper, the filtering assembly comprises a filtering net plate, and the filtering net plate is fixedly connected with the barrel. The filter screen plate is placed in the discharging hopper, a collecting assembly is installed in the barrel, and the collecting assembly comprises an annular installing frame; the double-shaft motor drives the impeller to rotate to drive air to flow from top to bottom, so that materials in the main tower are driven to flow downwards, the scraper blades rotate synchronously to clean the materials attached to the inner wall of the main tower and filter the attached materials, the collection rate of the materials is improved, and compared with the prior art, the device is simple in structure and convenient to operate. Driving equipment can be reduced, so that cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of dryers, in particular to a centrifugal spray dryer. Background Art

[0002] Centrifugal spray drying is the most widely used process in liquid process forming and drying industries. It is most suitable for producing powdery and granular solid products from liquid raw materials such as solutions, emulsions, suspensions, and pastes. In the pharmaceutical industry, it is commonly used to dry penicillin, blood products, enzymes, vaccines, and other drugs. It is used to produce excipients and co-processed excipients, which have higher fluidity, compatibility, and tablet disintegration properties, improve the compressibility of drugs, and reduce the tendency of crystal crystallization.

[0003] Most of the existing centrifugal spray dryers allow the dried materials to freely fall into the storage cylinder at the bottom of the drying tower. This method has low collection efficiency, incomplete collection, and inability to filter impurities. Therefore, we propose a centrifugal spray dryer.

[0004] The existing Chinese patent with the publication number CN219879101U discloses a centrifugal spray dryer, including a base. A main tower is arranged above the base, a collection mechanism is arranged below the main tower, a dust removal mechanism is arranged inside the main tower. The collection mechanism includes a storage box. A wind tube is arranged on the left lower side of the lower end of the storage box. A first motor is arranged inside the wind tube. A first fixing rod is arranged on the circumferential surface of the first motor. The end of the first fixing rod away from the first motor is connected to the inner surface of the wind tube. The output end of the first motor is in transmission connection with a first rotating rod through a coupling. A spiral blade is arranged on the circumferential surface of the first rotating rod. A collection box is slidably connected to the lower end inside the storage box. A collection pipe is arranged on the left upper side of the storage box. Under the cooperation of the first motor, the first rotating rod, and the spiral blade, the pressure inside the storage box is reduced, and the storage box generates suction on the main tower through the collection pipe, so as to collect the dried materials in the main tower.

[0005] Regarding the above and related existing technologies, the inventor believes that there are often the following defects: This device requires a large number of driving motors, the structure is relatively complex, which relatively increases the production cost and needs to be improved. Therefore, a centrifugal spray dryer is proposed for the above problems. Content of the Utility Model

[0006] In order to make up for the deficiencies of the existing technology and solve the above-mentioned technical problems, the utility model proposes a centrifugal spray dryer.

[0007] The technical solution adopted by the utility model to solve its technical problems is as follows: A centrifugal spray dryer described in the utility model includes a main tower. A cylinder is fixedly connected to the bottom end of the main tower. A discharge hopper is arranged at the bottom of the cylinder. A filtering component is installed inside the discharge hopper. The filtering component includes a filter mesh plate which is placed inside the discharge hopper. A collecting component is installed inside the cylinder. The collecting component includes an annular mounting frame which is fixedly installed inside the cylinder. A double-shaft motor is fixedly connected below the mounting frame. An impeller is fixedly connected to the driving shaft below the double-shaft motor. By driving the impeller to rotate by the double-shaft motor, air is driven to flow from top to bottom, thereby driving the materials inside the main tower to flow downward, so as to improve the collection effect of the materials. When the materials fall inside the cylinder, the materials are filtered by the filter mesh plate.

[0008] Preferably, the collecting component further includes a scraper which is attached to the inside of the main tower. A plurality of connecting rods are fixedly connected to the side wall of the scraper. The other ends of the connecting rods are fixedly connected to the upper driving shaft of the double-shaft motor. When the double-shaft motor operates, the scraper is driven to rotate to clean the materials attached to the inner wall of the main body, filter the attached materials, thereby improving the collection rate of the materials. Compared with the prior art, the structure of this device is simple, and the driving equipment can be reduced, thus reducing the cost.

[0009] Preferably, a wind guiding box is fixedly connected to the top of the main tower. A wind guiding pipe is fixedly connected to the side wall of the wind guiding box. The other end of the wind guiding pipe is fixedly connected to a hot air heater.

[0010] Preferably, a centrifugal atomizer is fixedly connected to the top of the wind guiding box. The centrifugal atomizer is connected by a pipeline to a liquid pump fixedly installed on the top of the wind guiding box. The liquid inlet end of the liquid pump is connected to a liquid barrel through a liquid inlet pipe. A collection box is placed below the discharge hopper. With the cooperation of the liquid barrel, the liquid inlet pipe, the liquid pump, the centrifugal atomizer, the wind guiding box, the wind guiding pipe and the hot air heater, the liquid material can be dried in the main tower. After the materials are discharged from the discharge hopper, they fall into the collection box.

[0011] Preferably, the filtering component further includes an upper ring body and a lower ring body. The upper ring body is fixedly connected to the cylinder. The lower ring body is fixedly connected to the discharge hopper. A plurality of electric push rods are fixedly connected to the side wall of the upper ring body, and the driving ends of the electric push rods are fixedly connected to the lower ring body. By driving the discharge hopper to lift by the electric push rods, after the material processing is completed, the discharge hopper is opened by stretching the electric push rods, so as to facilitate the worker to take out the filter mesh plate to clean the filtered impurities.

[0012] Preferably, an annular raised layer is arranged inside the discharge hopper. A handrail can be fixedly connected to the top of the filter mesh plate to facilitate taking the filter mesh plate.

[0013] Preferably, a first pushing protrusion is fixedly connected to the top plate of the filter screen plate.

[0014] Preferably, the filtering assembly further includes a second pushing protrusion fixedly installed on the lower driving shaft of the double-shaft motor. When the discharge hopper rises and inserts into the cylinder body, the filter screen plate is limited by the cooperation of the second pushing protrusion and the protrusion layer to prevent the filter screen plate from shaking. The double-shaft motor drives the second pushing protrusion to rotate, and the second pushing protrusion pushes the first pushing protrusion, thereby driving the filter screen plate to rotate and improving its filtering and screening efficiency.

[0015] The advantages of the present utility model are as follows:

[0016] 1. In the present utility model, the double-shaft motor drives the impeller to rotate, driving the air to flow from top to bottom, thereby driving the materials inside the main tower to flow downward. Meanwhile, the scraper rotates synchronously to clean the materials attached to the inner wall of the main body, filtering the attached materials, thereby improving the collection rate of the materials. Compared with the prior art, the structure of this device is simple, and the driving equipment can be reduced, thus reducing the cost.

[0017] 2. In the present utility model, the electric push rod extends to open the discharge hopper, facilitating workers to take out the filter screen plate to clean the filtered impurities. The second pushing protrusion pushes the first pushing protrusion, thereby driving the filter screen plate to rotate and improving its filtering and screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 It is a sectional view of the main tower and the cylinder body of the present utility model;

[0021] Figure 3 It is a schematic diagram of the structure of the collection component of the present utility model;

[0022] Figure 4 For the present utility model Figure 3 Schematic diagram of structure A;

[0023] Figure 5 It is a schematic diagram of the structure of the filtering component of the present utility model.

[0024] In the figure: 1, main tower; 2, cylinder body; 3, discharge hopper; 4, filtering component; 41, filter mesh plate; 42, upper ring body; 43, lower ring body; 44, electric push rod; 45, first pushing protrusion; 46, second pushing protrusion; 5, collection component; 51, mounting rack; 52, double-shaft motor; 53, impeller; 54, scraper; 55, connecting rod; 6, air guide box; 7, air guide pipe; 8, hot air heater; 9, centrifugal atomizer; 10, liquid pump; 11, protruding layer. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention. Embodiment

[0026] Please refer to Figures 1-4 As shown, a centrifugal spray dryer includes a main tower 1. The bottom end of the main tower 1 is fixedly connected to a cylinder body 2. A discharge hopper 3 is arranged at the bottom of the cylinder body 2. A filtering component 4 is installed inside the discharge hopper 3. The filtering component 4 includes a filter mesh plate 41. The filter mesh plate 41 is placed inside the discharge hopper 3. A collection component 5 is installed inside the cylinder body 2. The collection component 5 includes an annular mounting rack 51. The mounting rack 51 is fixedly installed inside the cylinder body 2. A double-shaft motor 52 is fixedly connected below the mounting rack 51. An impeller 53 is fixedly connected to the driving shaft below the double-shaft motor 52. By driving the impeller 53 to rotate by the double-shaft motor 52, air is driven to flow from top to bottom, thereby driving the materials inside the main tower 1 to flow downward, so as to improve the collection effect of the materials. When the materials fall inside the cylinder body 2, the materials are filtered by the filter mesh plate 41.

[0027] The collection component 5 further includes a scraper 54. The scraper 54 fits inside the main tower 1. A plurality of connecting rods 55 are fixedly connected to the side wall of the scraper 54. The other ends of the connecting rods 55 are fixedly connected to the upper driving shaft of the double-shaft motor 52. When the double-shaft motor 52 operates, the scraper 54 is driven to rotate to clean the materials attached to the inner wall of the main body, filter the attached materials, and thus improve the collection rate of the materials.

[0028] The top of the main tower 1 is fixedly connected to an air guide box 6. The side wall of the air guide box 6 is fixedly connected to an air guide pipe 7. The other end of the air guide pipe 7 is fixedly connected to a hot air heater 8.

[0029] The top of the air guide box 6 is fixedly connected with a centrifugal atomizer 9. The centrifugal atomizer 9 is connected by a pipeline to a liquid feed pump 10 fixedly installed on the top of the air guide box 6. The liquid inlet end of the liquid feed pump 10 is connected to a liquid feed bucket through a liquid inlet pipe. A collection box is placed below the discharge hopper 3. With the cooperation of the liquid feed bucket, the liquid inlet pipe, the liquid feed pump 10, the centrifugal atomizer 9, the air guide box 6, the air guide pipe 7, and the hot air heater 8, the liquid material can be dried in the main tower 1. After the material is discharged from the discharge hopper 3, it falls into the collection box. Embodiment

[0030] For Comparative Example 1, please refer to Figure 5 As shown, the present utility model provides another implementation manner. The filtering assembly 4 further includes an upper ring body 42 and a lower ring body 43. The upper ring body 42 is fixedly connected to the cylinder body 2, and the lower ring body 43 is fixedly connected to the discharge hopper 3. A plurality of electric push rods 44 are fixedly connected to the side wall of the upper ring body 42, and the driving ends of the electric push rods 44 are fixedly connected to the lower ring body 43. The discharge hopper 3 is driven to lift by the electric push rods 44. After the material processing is completed, the discharge hopper 3 is opened by the extension of the electric push rods 44, so as to facilitate the worker to take out the filter screen plate 41 to clean the filtered impurities.

[0031] An annular convex layer 11 is arranged inside the discharge hopper 3. A handrail can be fixedly connected to the top of the filter screen plate 41 to facilitate taking the filter screen plate 41.

[0032] A first pushing protrusion 45 is fixedly connected to the top plate of the filter screen plate 41.

[0033] The filtering assembly 4 further includes a second pushing protrusion 46. The second pushing protrusion 46 is fixedly installed on the lower driving shaft of the double-shaft motor 52. When the discharge hopper 3 rises and is inserted into the cylinder body 2, the filter screen plate 41 is limited by the cooperation of the second pushing protrusion 46 and the convex layer 11 to prevent the filter screen plate 41 from shaking. The double-shaft motor 52 drives the second pushing protrusion 46 to rotate, and the first pushing protrusion 45 is pushed by the second pushing protrusion 46, thereby driving the filter screen plate 41 to rotate and improving its filtering and screening efficiency.

[0034] Those skilled in the art connect all the electrical components in this case to their adapted power supplies through wires, and should select a suitable controller according to the actual situation and electrically connect it to the double-shaft motor 52, the liquid feed pump 10, the centrifugal atomizer 9, and the hot air heater 8 to meet the control requirements. For the specific connection and control sequence, reference should be made to the sequence of the electrical components working successively in the following working principle to complete the electrical connection. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and will not explain the electrical control.

[0035] Working principle: A collection box is placed below the discharge hopper 3. With the cooperation of the liquid material bucket, the liquid inlet pipe, the liquid material pump 10, the centrifugal atomizer 9, the air guide box 6, the air guide pipe 7, and the hot air heater 8, the liquid material can be dried in the main tower 1. After the material is discharged from the discharge hopper 3, it falls into the collection box.

[0036] The double-shaft motor 52 drives the impeller 53 to rotate, driving the air to flow from top to bottom, thereby driving the material inside the main tower 1 to flow downward, thus improving the collection effect of the material. When the material falls inside the cylinder body 2, the material is filtered by the filter mesh plate 41. When the double-shaft motor 52 operates, it drives the scraper 54 to rotate, cleaning the material attached to the inner wall of the main body, filtering the attached material, and thus improving the collection rate of the material.

[0037] The electric push rod 44 drives the discharge hopper 3 to lift. After the material processing is completed, the electric push rod 44 extends to open the discharge hopper 3, facilitating the worker to take out the filter mesh plate 41 to clean the filtered impurities.

[0038] When the discharge hopper 3 rises and inserts into the cylinder body 2, the filter mesh plate 41 is limited by the cooperation of the pushing projection two 46 and the projection layer 11 to prevent the filter mesh plate 41 from shaking. The double-shaft motor 52 drives the pushing projection two 46 to rotate, and the pushing projection two 46 pushes the pushing projection one 45, thereby driving the filter mesh plate 41 to rotate and improving its filtering and screening efficiency.

[0039] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0040] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A centrifugal spray dryer, comprising a main tower (1), characterized in that: The bottom end of the main tower (1) is fixedly connected to a cylinder body (2). A discharge hopper (3) is arranged at the bottom of the cylinder body (2). A filtering component (4) is installed inside the discharge hopper (3). The filtering component (4) includes a filter mesh plate (41). The filter mesh plate (41) is placed inside the discharge hopper (3). A collection component (5) is installed inside the cylinder body (2). The collection component (5) includes an annular mounting frame (51). The mounting frame (51) is fixedly installed inside the cylinder body (2). A double-shaft motor (52) is fixedly connected below the mounting frame (51). An impeller (53) is fixedly connected to the driving shaft below the double-shaft motor (52).

2. The centrifugal spray dryer according to claim 1, characterized in that: The collection component (5) further includes a scraper (54). The scraper (54) fits inside the main tower (1). A plurality of connecting rods (55) are fixedly connected to the side wall of the scraper (54). The other ends of the connecting rods (55) are fixedly connected to the driving shaft above the double-shaft motor (52).

3. The centrifugal spray dryer according to claim 1, wherein: A wind guiding box (6) is fixedly connected to the top of the main tower (1). A wind guiding pipe (7) is fixedly connected to the side wall of the wind guiding box (6). The other end of the wind guiding pipe (7) is fixedly connected to a hot air heater (8).

4. The centrifugal spray dryer according to claim 3, wherein: A centrifugal atomizer (9) is fixedly connected to the top of the wind guiding box (6). The centrifugal atomizer (9) is connected by a pipeline to a liquid feed pump (10) fixedly installed on the top of the wind guiding box (6). The liquid inlet end of the liquid feed pump (10) is connected to a liquid feed barrel through a liquid inlet pipe.

5. The centrifugal spray dryer according to claim 1, wherein: The filtering component (4) further includes an upper ring body (42) and a lower ring body (43). The upper ring body (42) is fixedly connected to the cylinder body (2). The lower ring body (43) is fixedly connected to the discharge hopper (3). A plurality of electric push rods (44) are fixedly connected to the side wall of the upper ring body (42). And the driving end of the electric push rod (44) is fixedly connected to the lower ring body (43).

6. The centrifugal spray dryer according to claim 1, wherein: An annular raised layer (11) is arranged inside the discharge hopper (3).

7. The centrifugal spray dryer according to claim 1, wherein: A pushing projection one (45) is fixedly connected to the top plate of the filter mesh plate (41).

8. The centrifugal spray dryer according to claim 1, wherein: The filtering component (4) further includes a pushing projection two (46). The pushing projection two (46) is fixedly installed on the driving shaft below the double-shaft motor (52).

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