Spray drying device for microcrystalline cellulose production
By installing adjustable-angle nozzles and air hammer vibration devices in the microcrystalline cellulose drying device, the problems of local high-temperature adhesion and blockage caused by the fixed hot air structure are solved, achieving uniform drying and efficient discharge.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 河北谊诚纤维素有限公司
- Filing Date
- 2025-06-14
- Publication Date
- 2026-05-19
AI Technical Summary
The hot air structure of existing microcrystalline cellulose drying equipment is a fixed structure, which cannot be adjusted. This leads to localized temperature increases, causing microcrystalline cellulose material to adhere to the inside of the drum and form clumps. Traditional scrapers cannot clean the dead corners, resulting in equipment blockage.
A spray drying device was designed. By setting an installation groove and device ring inside the drying barrel, adjusting the nozzle angle using a gear set, and installing an air hammer on the outside of the collection hopper, the device uses a solenoid valve to control compressed air to drive the piston rod to vibrate the impact head, thus avoiding material adhesion and cleaning dead corners.
It achieves uniform contact between hot air and atomized particles, reduces material adhesion caused by local high temperature, and avoids internal blockage of the device through vibration detachment, thereby improving the discharge efficiency of microcrystalline cellulose.
Smart Images
Figure CN224252108U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of microcrystalline cellulose production technology, specifically to a spray drying device for microcrystalline cellulose production. Background Technology
[0002] Microcrystalline cellulose, whose main component is a linear polysaccharide linked by β-1,4-glucosidic bonds [1], is a white, odorless, and tasteless crystalline powder composed of extremely fine, short rod-shaped or powdery porous particles that are free-flowing after hydrolysis of natural cellulose to the limiting degree of polymerization (LODP) by dilute acid. In general plant fibers, microcrystalline cellulose accounts for about 70%, and the other 30% is amorphous. Microcrystalline cellulose is widely used in pharmaceutical, cosmetic, and food industries. Different particle sizes and water contents have different characteristics and application ranges.
[0003] Microcrystalline cellulose needs to be dried after production. The original drying equipment has a fixed hot air structure and cannot be adjusted according to the microcrystalline cellulose. This causes local temperature rise inside the equipment, which causes the microcrystalline cellulose material to stick to the inside of the barrel. During the drying process, microcrystalline cellulose is prone to forming edge clumps. Traditional scrapers cannot clean the dead corners, which leads to blockage inside the equipment and affects the discharge of microcrystalline cellulose. Utility Model Content
[0004] To overcome the above-mentioned defects, this utility model provides a spray drying device for microcrystalline cellulose production. It solves the technical problem that the hot air structure of the original drying device is fixed and cannot be adjusted according to the microcrystalline cellulose, which leads to local temperature rise inside the device, causing the microcrystalline cellulose material to adhere to the inside of the barrel. During the drying process, microcrystalline cellulose is prone to forming edge clumps, and traditional scrapers cannot clean the dead corners, resulting in blockage inside the device and affecting the discharge of microcrystalline cellulose.
[0005] According to one aspect, at least one embodiment of the present invention provides a spray drying device for microcrystalline cellulose production, comprising: a drying barrel, wherein an installation groove is fixedly provided inside the drying barrel, a protective plate is fixedly connected inside the installation groove, and a connecting port is fixedly provided at the upper end of the protective plate, a device ring is fixedly connected to the inner side of the protective plate, and a placement groove is fixedly provided at the upper end of the device ring, and a transport pipe is fixedly installed at the front end of the placement groove.
[0006] A fixing plate is fixedly installed inside the placement groove. A gear set is rotatably connected to the inner side of the fixing plate. A connecting plate is fixedly installed on the inner side of the gear set. An adjusting rod is inserted and connected to the inner side of the connecting plate, and a nozzle is fixedly connected to the upper end of the adjusting rod.
[0007] For example, in at least one embodiment of the present invention, a spray drying device for microcrystalline cellulose production further includes: a mounting frame fixedly installed at the lower end of the drying barrel, a collection hopper fixedly installed at the lower end of the drying barrel, a discharge port fixedly opened at the lower end of the collection hopper, a valve fixedly installed at the upper end of the discharge port, a conveying pipe fixedly connected to the upper end of the drying barrel, and a centrifugal atomizing disc fixedly connected to the lower end of the conveying pipe.
[0008] For example, in at least one embodiment of the present invention, a spray drying device for microcrystalline cellulose production further includes: a connecting plate fixedly connected to the front end of the drying barrel, and a cylinder fixedly installed at the upper end of the connecting plate; an air port fixedly opened at the upper end of the cylinder, and a solenoid valve fixedly connected to the upper end of the air port; a piston rod fixedly connected to the inside of the cylinder; a reinforcing plate fixedly installed at the rear end of the cylinder, and an impact head fixedly installed at the rear end of the reinforcing plate.
[0009] For example, in at least one embodiment of the present invention, a spray drying device for microcrystalline cellulose production further includes: the diameter of the protective plate is smaller than the diameter of the device ring, and the outer side of the device ring is fixedly connected to the transport pipe through a surrounding pipe.
[0010] For example, in at least one embodiment of the present invention, a spray drying device for microcrystalline cellulose production is provided, which further includes: a heat insulation layer fixedly installed on the outer end of the drying barrel; the width of the protective plate is the same as the width of the mounting groove; the device ring is fixedly connected inside the mounting groove; the placement groove and the connection port form an interlocking connection; and the installation position of the placement groove corresponds to the installation position of the connection port.
[0011] For example, in at least one embodiment of the present invention, a spray drying device for microcrystalline cellulose production further includes: the transport pipe is connected to the drying barrel through holes; the adjusting rod is connected to the connecting plate; the gear set is symmetrically installed on the front and rear sides of the adjusting rod with the adjusting rod as the central reference; the right side of the nozzle is fixedly connected to the transport pipe; and the upper end of the nozzle is conical.
[0012] For example, in at least one embodiment of the present invention, a spray drying device for microcrystalline cellulose production further includes: the upper end of the mounting frame is L-shaped; the conveying pipe is symmetrically installed on the front and rear sides of the centrifugal atomizing disc with the centrifugal atomizing disc as the central reference; and the concentrating hopper is conical.
[0013] For example, in at least one embodiment of the present invention, a spray drying device for microcrystalline cellulose production further includes: the connecting plate is fixedly installed at the outer end of the hopper, an extension plate is fixedly installed at the front end of the connecting plate, the piston rod drives the reinforcement plate to move pneumatically, and the rear end shape of the impact head is angled to fit the outer end of the hopper.
[0014] The beneficial effects of the embodiments of this utility model are as follows:
[0015] In this invention, an installation groove is added inside the drying barrel to house the device. Multiple placement grooves are used to connect and place the nozzles. The nozzles are rotated by an adjusting rod, and gear sets are added to both sides of the adjusting rod. A PLC controller controls the rotation of the gear sets to adjust the nozzle angle, making the contact between the atomized particles and the hot air more uniform and reducing drying dead zones. The above-mentioned setting dynamically adjusts the hot air angle to avoid local high temperatures causing the material to adhere to the inner wall of the drying barrel. In addition, an air hammer is added to the outside of the collection hopper in this device. A connecting plate fixes the air hammer to the outside of the collection hopper. A solenoid valve is used to regulate the compressed air, which drives the piston to reciprocate, causing the impact head to vibrate at the collection hopper, thereby achieving the effect of detaching the microcrystalline cellulose. The above-mentioned setting uses an air hammer to vibrate the device, and the vibration wave is transmitted through the barrel wall to detach the microcrystalline cellulose. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of a spray drying device for microcrystalline cellulose production in one embodiment of the present invention;
[0018] Figure 2 This is a schematic diagram of the drying barrel structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the mounting bracket structure of this utility model;
[0020] Figure 4 This is a schematic diagram of the rotating nozzle structure of this utility model;
[0021] Figure 5 This is a schematic diagram of the structure of the pneumatic hammer of this utility model.
[0022] In the diagram: 1. Mounting frame; 2. Drying drum; 3. Concentrated hopper; 4. Discharge port; 5. Valve; 6. Mounting slot; 7. Conveying pipe; 8. Centrifugal atomizing disc; 9. Protective plate; 10. Connection port; 11. Device ring; 12. Placement slot; 13. Transport pipe; 14. Fixing plate; 15. Gear set; 16. Connecting plate; 17. Adjusting rod; 18. Nozzle; 19. Connecting plate; 20. Cylinder; 21. Air port; 22. Solenoid valve; 23. Piston rod; 24. Reinforcing plate; 25. Impact head. Detailed Implementation
[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.
[0024] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."
[0025] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0027] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0028] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0029] like Figures 1-4 As shown, it illustrates a spray drying device for microcrystalline cellulose production according to an embodiment of the present invention, comprising: a drying barrel 2, an installation groove 6 fixedly provided inside the drying barrel 2, a protective plate 9 fixedly connected inside the installation groove 6, and a connecting port 10 fixedly provided at the upper end of the protective plate 9, a device ring 11 fixedly connected to the inner side of the protective plate 9, and a placement groove 12 fixedly provided at the upper end of the device ring 11, and a transport pipe 13 fixedly installed at the front end of the placement groove 12.
[0030] A fixing plate 14 is fixedly installed inside the placement groove 12. A gear set 15 is rotatably connected to the inner side of the fixing plate 14. A connecting plate 16 is fixedly installed on the inner side of the gear set 15. An adjusting rod 17 is inserted and connected to the inner side of the connecting plate 16, and a nozzle 18 is fixedly connected to the upper end of the adjusting rod 17.
[0031] A mounting bracket 1 is fixedly installed at the lower end of the drying barrel 2, a concentrator 3 is fixedly installed at the lower end of the drying barrel 2, an outlet 4 is fixedly opened at the lower end of the concentrator 3, a valve 5 is fixedly installed at the upper end of the outlet 4, a conveying pipe 7 is fixedly connected to the upper end of the drying barrel 2, and a centrifugal atomizing disc 8 is fixedly connected to the lower end of the conveying pipe 7.
[0032] In this embodiment, the nozzle 18 is installed in a ring shape inside the placement groove 12, and the gear set 15 drives the adjusting rod 17 to rotate.
[0033] For example, such as Figure 2 As shown, the upper part of the mounting frame 1 is L-shaped, the conveying pipe 7 is symmetrically installed on the front and back sides of the centrifugal atomizing disc 8 with the centrifugal atomizing disc 8 as the center reference, and the concentrating hopper 3 is conical in shape.
[0034] For example, such as Figure 3 As shown, an insulation layer is fixedly installed on the outer end of the drying barrel 2, the width of the protective plate 9 is the same as the width of the mounting groove 6, the device ring 11 is fixedly connected inside the mounting groove 6, the placement groove 12 and the connecting port 10 form an interlocking connection, and the installation position of the placement groove 12 corresponds to the installation position of the connecting port 10.
[0035] For example, such as Figure 4As shown, the transport pipe 13 is connected to the drying barrel 2 through the hole, the adjusting rod 17 is connected to the connecting plate 16 through the hole, the gear set 15 is symmetrically installed on the front and rear sides of the adjusting rod 17 with the adjusting rod 17 as the center reference, the right side of the nozzle 18 is fixedly connected to the transport pipe 13, and the upper end of the nozzle 18 is conical.
[0036] In some examples, the mounting frame 1 places the drying barrel 2 on the ground. The microcrystalline cellulose liquid enters the high-speed centrifugal atomizing disc 8 through the conveying pipe 7, and is atomized into extremely fine mist droplets through the high-speed centrifugal atomizing disc 8 at the top of the drying barrel 2. An installation groove 6 is opened inside the drying barrel 2, and the hot air structure is installed using the installation groove 6. A placement groove 12 is set on the device ring 11. Hot air is sprayed out from the placement groove 12 of the device ring 11 through the nozzle 18, and comes into contact with the atomized droplets in parallel flow, and is dried into the finished product in a very short time. In order to reduce To minimize drying dead zones, connecting plates 16 and fixing plates 14 are added to both sides of the nozzle 18, which are connected by an adjusting rod 17. The nozzle 18 is linked to the gear set 15 through the connecting plates 16 and fixing plates 14. The PLC controls the motor to drive the adjusting rod 17 to adjust the angle of the nozzle 18. A protective plate 9 is added to the device ring 11 to seal the installation groove 6 and prevent the liquid material from seeping into the hot air pipe, reducing the risk of blockage. The dried microcrystalline cellulose powder falls into the collection hopper 3 and is discharged through the outlet 4. The design tilt angle is >60° to avoid material accumulation.
[0037] For example, such as Figure 5 As shown, a spray drying device for microcrystalline cellulose production is illustrated in another embodiment of the present invention. The device includes a drying barrel 2 with a connecting plate 19 fixedly connected to the front end, a cylinder 20 fixedly installed on the upper end of the connecting plate 19, a solenoid valve 22 fixedly installed on the front of the outer end of the cylinder 20, an air port 21 fixedly opened on the upper end of the cylinder 20, a solenoid valve 22 fixedly connected to the upper end of the air port 21, a piston rod 23 fixedly connected to the inside of the cylinder 20, a reinforcing plate 24 fixedly installed on the rear end of the cylinder 20, and an impact head 25 fixedly installed on the rear end of the reinforcing plate 24.
[0038] For example, such as Figure 5 As shown, the connecting plate 19 is fixedly installed at the outer end of the concentrator 3, and an extension plate is fixedly installed at the front end of the connecting plate 19. The piston rod 23 drives the reinforcing plate 24 to move through pneumatic means, and the rear end shape of the impact head 25 fits the outer end angle of the concentrator 3.
[0039] In some examples, the concentrator 3 is fixed to the outside of the concentrator 3, and is made of 316L stainless steel. It is welded to the concentrator 3 with bolts to ensure load-bearing strength. The cylinder is installed on the connecting plate 19. The cylinder barrel 20 has a built-in wear-resistant bushing to reduce piston wear. A solenoid valve 22 is added to the air port 21. Compressed air is input into the cylinder barrel 20 through the air port 21, pushing the piston rod 23 inside the cylinder barrel 20. The piston rod 23 is connected to the impact head 25 through the reinforcing plate 24. The impact head 25 is coated with tungsten carbide to increase impact resistance and life. The opening and closing frequency of the air port 21 is adjusted by the solenoid valve 22 to control the impact interval and force. The compressed air drives the piston rod 23 to reciprocate, causing the impact head 25 to vibrate the concentrator 3. Annular reinforcing ribs are added around the impact point to reduce impact damage.
[0040] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A spray drying apparatus for producing microcrystalline cellulose, characterized by, include: A drying drum (2) has an installation groove (6) fixedly opened inside. A protective plate (9) is fixedly connected inside the installation groove (6), and a connection port (10) is fixedly opened at the upper end of the protective plate (9). A device ring (11) is fixedly connected to the inner side of the protective plate (9), and a placement groove (12) is fixedly opened at the upper end of the device ring (11). A transport pipe (13) is fixedly installed at the front end of the placement groove (12). A fixing plate (14) is fixedly installed inside the placement groove (12). A gear set (15) is rotatably connected to the inner side of the fixing plate (14). A connecting plate (16) is fixedly installed on the inner side of the gear set (15). An adjusting rod (17) is inserted through the inner side of the connecting plate (16), and a nozzle (18) is fixedly connected to the upper end of the adjusting rod (17).
2. The spray drying apparatus for producing microcrystalline cellulose according to claim 1, wherein The lower end of the drying barrel (2) is fixedly equipped with a mounting bracket (1), the lower end of the drying barrel (2) is fixedly equipped with a concentrator (3), the lower end of the concentrator (3) is fixedly provided with a discharge port (4), the upper end of the discharge port (4) is fixedly equipped with a valve (5), the upper end of the drying barrel (2) is fixedly connected with a conveying pipe (7), and the lower end of the conveying pipe (7) is fixedly connected with a centrifugal atomizing disc (8).
3. The spray drying apparatus for producing microcrystalline cellulose according to claim 2, wherein The front end of the drying barrel (2) is fixedly connected to a connecting plate (19), and a cylinder (20) is fixedly installed on the upper end of the connecting plate (19). An air port (21) is fixedly opened on the upper end of the cylinder (20), and a solenoid valve (22) is fixedly connected to the upper end of the air port (21). A piston rod (23) is fixedly connected inside the cylinder (20). A reinforcing plate (24) is fixedly installed on the rear end of the cylinder (20), and an impact head (25) is fixedly installed on the rear end of the reinforcing plate (24).
4. The spray drying apparatus for producing microcrystalline cellulose according to claim 1, wherein The diameter of the protective plate (9) is smaller than the diameter of the device ring (11), and the outer side of the device ring (11) is fixedly connected to the transport pipe (13) through the surrounding pipe.
5. The spray drying apparatus for producing microcrystalline cellulose according to claim 1, wherein The outer end of the drying barrel (2) is fixedly installed with a heat insulation layer. The width of the protective plate (9) is the same as the width of the mounting groove (6). The device ring (11) is fixedly connected inside the mounting groove (6). The placement groove (12) and the connection port (10) form an interlocking connection. The installation position of the placement groove (12) corresponds to the installation position of the connection port (10).
6. The spray drying apparatus for producing microcrystalline cellulose according to claim 2, wherein The transport pipe (13) is connected to the drying barrel (2) through the hole. The adjusting rod (17) is connected to the connecting plate (16). The gear set (15) is symmetrically installed on the front and rear sides of the adjusting rod (17) with the adjusting rod (17) as the center reference. The right side of the nozzle (18) is fixedly connected to the transport pipe (13), and the upper end of the nozzle (18) is conical.
7. The spray drying apparatus for producing microcrystalline cellulose according to claim 2, wherein The upper part of the mounting bracket (1) is L-shaped, the conveying pipe (7) is symmetrically installed on the front and back sides of the centrifugal atomizing disc (8) with the centrifugal atomizing disc (8) as the center reference, and the concentrating hopper (3) is conical.
8. The spray drying apparatus for producing microcrystalline cellulose according to claim 3, characterized by The connecting plate (19) is fixedly installed at the outer end of the collecting hopper (3), the front end of the connecting plate (19) is fixedly installed with an elongated plate, the piston rod (23) is driven to move by the reinforcing plate (24) through gas power, and the rear end shape of the impact head (25) is angle-fitted with the outer end of the collecting hopper (3).