Low-temperature spray drying device for polysaccharide feed additive

Abstract

The utility model discloses a low-temperature spray drying device for polysaccharide feed additives, which belongs to the technical field of drying of polysaccharide feed additives and comprises a drying tank for drying polysaccharide feed additives at low temperature, a material frame for collecting powder is mounted in the drying tank in an embedded manner, and a sealing cover covers the drying tank. A driving shaft is rotatably connected to the interior of the sealing cover in the axis direction, an annular pipe is fixedly connected to the exterior of the driving shaft, a plurality of spraying pipes are connected to the annular pipe in the axis direction at equal angles, and the spraying pipes are obliquely and rotatably connected to the annular pipe; a steering mechanism for controlling the spray pipe to rotate back and forth to enlarge the atomization range and angle is arranged in the sealing cover; the bottom of the drying tank is fixedly connected with a cooling curved pipe for low-temperature drying of polysaccharide spray; according to the device, a polysaccharide solution can be dried and formed in a low-temperature state, heat-sensitive polysaccharide can be rapidly dried at a low temperature, and the original biological activity of the heat-sensitive polysaccharide is reserved to the maximum extent.

Description

Technical Field

[0001] This utility model relates to the field of drying technology for polysaccharide feed additives, specifically a low-temperature spray drying device for polysaccharide feed additives. Background Technology

[0002] Polysaccharide feed additives (such as Rehmannia glutinosa polysaccharide and Codonopsis pilosula functional sugar) have good biological activities such as immune regulation, growth promotion and anti-stress, and are widely used in livestock and poultry breeding. The drying process is a crucial part of its production process, which directly affects the quality, stability and functionality of the product. By atomizing the polysaccharide solution into fine droplets and contacting it with hot air, the moisture is quickly evaporated, and finally dry polysaccharide powder is formed.

[0003] For example, patent CN221744557U discloses a feed additive drying device to improve the uniformity of feed additive mixing and ensure the quality of feed additive production. It includes a drying chamber, a top cover, a fan, a filter screen, and a handle. The top cover is rotatably connected to the upper rear of the drying chamber, and fans are connected to both sides of the top cover. Filter screens are connected to the lower side of each fan, and each fan is equipped with a heating wire. A handle is connected to the front of the top cover. By moving the rotating shaft to the right, the meshing motion of the gear and rack drives the rotating shaft to rotate, achieving the effect of moving and mixing the feed additive, improving the uniformity of mixing, and ensuring the quality of feed additive production. However, polysaccharides are generally heat-sensitive and are prone to structural damage, decreased activity, or even degradation during traditional high-temperature drying processes, resulting in a significant reduction in their functional effects. In addition, polysaccharide solutions are prone to agglomeration, uneven encapsulation, and low spray efficiency during drying, affecting the stability and compounding performance of the finished product.

[0004] To address the aforementioned issues, there is an urgent need for innovative designs based on existing polysaccharide feed additive drying devices. Utility Model Content

[0005] The purpose of this invention is to provide a low-temperature spray drying device for polysaccharide feed additives, in order to solve the problems mentioned in the background art, which state that polysaccharide substances are generally heat-sensitive and are prone to structural damage, decreased activity, or even degradation during traditional high-temperature drying processes, resulting in a significant reduction in their functional effects. In addition, polysaccharide solutions are prone to agglomeration, uneven encapsulation, and low spray efficiency during the drying process, which affect the stability and compounding performance of the finished product.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a low-temperature spray drying device for polysaccharide feed additives, comprising a drying tank for low-temperature drying of polysaccharide feed additives, a material frame for collecting powder is fitted inside the drying tank, a sealing cover is provided on the top of the drying tank, a support frame is fixedly connected to the side of the drying tank, a cylinder is installed on the support frame, and the output end of the cylinder is fixedly connected to the sealing cover; a drive shaft is rotatably connected to the sealing cover along the axial direction, an annular tube is fixedly connected to the outside of the drive shaft, and multiple spray pipes are connected at equal angles along the axial direction on the annular tube, and the spray pipes are rotatably connected to the annular tube at an incline; a steering mechanism is provided in the sealing cover to control the reciprocating rotation of the spray pipes to expand the atomization range and angle; a cooling curved pipe for low-temperature drying of polysaccharide spray is fixedly connected to the bottom of the drying tank.

[0007] Preferably, the steering mechanism includes a lifting ring frame fixedly connected to the top of the sealing cover, and multiple arc-shaped grooves are opened at equal angles along the axial direction on the lifting ring frame; a convex plate is fixedly sleeved on the outside of the nozzle, and the convex plate rotates circumferentially to contact the bottom of the lifting ring frame and the surface of the arc-shaped grooves.

[0008] Preferably, a water inlet pipe is connected through the annular pipe, and a sealing cover is fixedly fitted on the outside of the water inlet pipe; a groove is opened on the sealing cover to slide with the water inlet pipe, and the sealing cover is sealed and fitted to the side of the groove.

[0009] Preferably, the drying tank is equipped with a power mechanism that controls the material frame to shake up and down to disperse the material and maintain a uniform cooling state.

[0010] Preferably, the power mechanism includes a hollow guide cylinder fixedly installed on the bottom surface of the drying tank, and a lifting rod is telescopically connected in the hollow guide cylinder. Two lifting rods are symmetrically arranged about the axis of the material frame, and a lifting bracket is fixedly connected between the two lifting rods.

[0011] Preferably, the drying tank is rotatably connected to an externally threaded shaft along the axial direction, and a toothed shaft is fixedly connected to the upper end face of the externally threaded shaft; a toothed groove that mates with the toothed shaft is provided below the drive shaft; and the lifting bracket is threaded onto the externally threaded shaft.

[0012] Preferably, a drive shaft is rotatably connected to the bottom surface of the drying tank, and a fan blade is fixedly installed on the drive shaft; a pinion is fixedly installed on the drive shaft, and a gear ring is meshed next to the pinion, with the gear ring fixedly connected to an externally threaded shaft.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the low-temperature spray drying device for polysaccharide feed additives has a closed sealing cover and drying tank, and controls the atomization and spraying of polysaccharide solution through the water inlet pipe, the ring pipe and the spray pipe. The sprayed liquid atomization is dried and shaped under the temperature control of the cooling curved pipe, so as to achieve the purpose of low-temperature atomization drying, so that heat-sensitive polysaccharides can be dried quickly at a lower temperature and retain their original biological activity to the maximum extent.

[0014] Furthermore, the sealing cover is equipped with a steering mechanism that controls the reciprocating rotation of the nozzle to expand the atomization range and angle. During the low-temperature spray drying process, the drive shaft drives the annular tube and nozzle to reciprocate, expanding the spray range. As the nozzle reciprocates along the circumferential direction, it can also reciprocate along its own axis under the transmission of the lifting ring, arc groove and cam, further adjusting the spray angle and range, making the spray more fluid and enabling more uniform drying and molding at low temperatures.

[0015] Furthermore, the drying tank is equipped with a power mechanism that controls the material frame to shake up and down to disperse the material and maintain a uniform cooling state. While the drive shaft rotates, it drives the external threaded shaft below to rotate. Under the threaded transmission between the external threaded shaft and the lifting bracket, the material frame can be controlled to move up and down reciprocally, shaking the powder inside. The powder is evenly dispersed, so that the low temperature can be evenly transferred.

[0016] The external threaded shaft, driven by the meshing of the gear ring and pinion, can rotate the fan blades. The fan blades, located at the bottom of the material frame, can accelerate the upward transmission of cold air from below, maintain uniform airflow, and further improve the effect of low-temperature drying. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the combined structure of the drying container and sealing cap of this utility model.

[0018] Figure 2 This is a schematic diagram of the separation structure of the drying tank and sealing cap of this utility model.

[0019] Figure 3 This is a schematic diagram of the material frame structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the hoisting ring frame structure of this utility model.

[0021] Figure 5 This is a schematic diagram of the annular tube structure of this utility model.

[0022] Figure 6 This is a schematic diagram of the convex disk structure of this utility model.

[0023] Figure 7 This is a schematic diagram of the cooling curved pipe structure of this utility model.

[0024] Figure 8 This is a schematic diagram of the wind turbine blade structure of this utility model.

[0025] In the diagram: 1. Drying tank; 2. Material frame; 3. Sealing cover; 31. Support frame; 32. Cylinder; 4. Drive shaft; 41. Gear groove; 42. Toothed shaft; 43. Externally threaded shaft; 5. Ring pipe; 51. Water inlet pipe; 52. Sealing cover plate; 53. Slide groove; 6. Spray pipe; 61. Lifting ring frame; 62. Arc groove; 63. Protrusion; 7. Hollow guide tube; 8. Lifting rod; 9. Lifting bracket; 10. Cooling curved pipe; 11. Drive shaft; 12. Fan blade; 13. Pinion; 14. Gear ring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1: Please refer to Figures 1-6 This utility model provides the following technical solution: a low-temperature spray drying device for polysaccharide feed additives, comprising a drying tank 1 for low-temperature drying of polysaccharide feed additives, a material frame 2 for collecting powder is fitted into the drying tank 1, a sealing cover 3 is provided on the top of the drying tank 1, a support frame 31 is fixedly connected to the side of the drying tank 1, a cylinder 32 is installed on the support frame 31, and the output end of the cylinder 32 is fixedly connected to the sealing cover 3; a drive shaft 4 is rotatably connected to the sealing cover 3 along the axial direction, an annular tube 5 is fixedly connected to the outside of the drive shaft 4, and multiple spray pipes 6 are connected at equal angles along the axial direction on the annular tube 5, and the spray pipes 6 are rotatably connected to the annular tube 5 at an incline; a steering mechanism is provided in the sealing cover 3 to control the reciprocating rotation of the spray pipes 6 to expand the atomization range and angle; a cooling curved pipe 10 for low-temperature drying of polysaccharide spray is fixedly connected to the bottom of the drying tank 1.

[0028] The steering mechanism includes a lifting ring 61 fixedly connected to the top of the sealing cover 3. The lifting ring 61 has multiple arc-shaped grooves 62 opened at equal angles along the axial direction. A convex plate 63 is fixedly sleeved on the outside of the nozzle 6. The convex plate 63 rotates circumferentially and contacts the bottom of the lifting ring 61 and the surface of the arc-shaped grooves 62.

[0029] A water inlet pipe 51 is connected through the annular pipe 5, and a sealing cover plate 52 is fixedly sleeved on the outside of the water inlet pipe 51; a sliding groove 53 is opened on the sealing cover 3 to slide with the water inlet pipe 51, and the sealing cover plate 52 is sealed and fitted to the side of the sliding groove 53.

[0030] The cylinder 32 pushes the sealing cover 3 downwards, causing it to close onto the drying tank 1, maintaining a relatively sealed processing environment and reducing the loss of polysaccharide solution spray. The water inlet pipe 51 is connected to the polysaccharide solution delivery control device via a hose. The water inlet pipe 51 controls the polysaccharide solution to enter the annular pipe 5, and the spray nozzle 6 controls the atomization and spraying of the polysaccharide solution. The sprayed atomized liquid is evenly distributed within the sealed space of the drying tank 1 and the sealing cover 3, and the spray is dried and shaped at low temperature.

[0031] During the spraying process, the temperature of the coolant entering the cooling concave pipe 10 is controlled, and the temperature in the sealed processing environment is adjusted to ensure that the polysaccharide solution can be dried and shaped quickly at a low temperature, so that the heat-sensitive polysaccharide can be dried quickly at a lower temperature and retain its original biological activity to the maximum extent.

[0032] The nozzle 6 is rotatably connected to the annular tube 5 via a spiral spring. The spiral spring limits the rotation direction of the nozzle 6. During the spray drying process, the motor on the sealing cover 3 controls the drive shaft 4 to rotate. The drive shaft 4 drives the annular tube 5 to rotate reciprocally, and the nozzle 6 connected to the annular tube 5 rotates reciprocally in a circular motion, expanding the spray range of the nozzle 6. At the same time as the nozzle 6 rotates reciprocally, the cam 63 fixed on the nozzle 6 rotates synchronously. The cam 63 presses against the bottom of the lifting ring 61. When the cam 63 rotates to the arc groove 62, the pressure on the cam 63 gradually decreases. Under the elastic rotational force of the spiral spring on the nozzle 6, the nozzle 6 and the cam 63 can be driven to rotate. As the cam 63 rotates reciprocally towards and away from the arc groove 62, it can drive the nozzle 6 to rotate reciprocally. The reciprocatingly rotating nozzle 6 can adjust the spray range and angle, improve the flowability of the spray in the drying tank 1, make the polysaccharide solution evenly distributed, and maintain its uniform drying and shaping.

[0033] Example 2: Please refer to Figures 1-8 Based on Embodiment 1, a power mechanism is also disclosed, the specific structure of which is as follows: A power mechanism is provided in the drying tank 1 to control the material frame 2 to shake up and down to disperse the material and maintain a uniform cooling state. The power mechanism includes a hollow guide cylinder 7 fixedly installed on the bottom surface of the drying tank 1. A lifting rod 8 is telescopically connected in the hollow guide cylinder 7. Two lifting rods 8 are symmetrically arranged about the central axis of the material frame 2, and a lifting bracket 9 is fixedly connected between the two lifting rods 8.

[0034] A threaded shaft 43 is rotatably connected to the drying tank 1 along the axial direction, and a toothed shaft 42 is fixedly connected to the upper end face of the threaded shaft 43; a toothed groove 41 that mates with the toothed shaft 42 is opened below the drive shaft 4; the lifting bracket 9 is threadedly sleeved on the threaded shaft 43.

[0035] A drive shaft 11 is rotatably connected to the bottom of the drying tank 1, and a fan blade 12 is fixedly installed on the drive shaft 11; a pinion 13 is fixedly installed on the drive shaft 11, and a gear ring 14 is meshed next to the pinion 13, and the gear ring 14 is fixedly connected to the external threaded shaft 43.

[0036] When the sealing cover 3 moves down and closes on the drying tank 1, the drive shaft 4 on the sealing cover 3 is engaged with the outside of the toothed shaft 42 through the toothed groove 41. When the drive shaft 4 reciprocates and drives the annular tube 5 to move, the drive shaft 4 can control the toothed shaft 42 and the external threaded shaft 43 to rotate synchronously. The lifting bracket 9 is threadedly connected to the external threaded shaft 43. Under the threaded transmission, the lifting bracket 9 can be controlled to move up and down reciprocally. The lifting bracket 9 pushes the lifting rod 8 connected to the hollow guide cylinder 7 to move up and down. The lifting rod 8 drives the material frame 2 to move up and down reciprocally, causing the powder in the material frame 2 to shake (a breathable gauze is laid at the bottom of the material frame 2, and there is a certain gap between the material frame 2 and the drying tank 1 to facilitate the transmission of cold air), thereby making the powder evenly dispersed and dried, and also facilitating the drying of the spray above by the cold air.

[0037] During the rotation of the external threaded shaft 43, the gear ring 14 fixed to its outside rotates synchronously. The gear ring 14, through the meshing connection with the pinion 13, can drive the transmission shaft 11 and the fan blade 12 to rotate. The rotation of the fan blade 12 can accelerate the gas flow in the drying tank 1, so that the cold air generated by the cooling curved tube 10 can be evenly distributed in the drying tank 1, thereby further assisting the polysaccharide solution to dry and form at low temperature.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A low-temperature spray drying apparatus for polysaccharide feed additives, comprising a drying tank (1) for low-temperature drying of polysaccharide feed additives, wherein a material frame (2) for collecting powder is fitted into the drying tank (1), characterized in that: The drying tank (1) is covered with a sealing cover (3), and a support frame (31) is fixedly connected to the side of the drying tank (1). A cylinder (32) is installed on the support frame (31), and the output end of the cylinder (32) is fixedly connected to the sealing cover (3). The sealing cover (3) is rotatably connected to a drive shaft (4) along the axial direction. An annular tube (5) is fixedly connected to the outside of the drive shaft (4). Multiple nozzles (6) are connected at equal angles along the axial direction on the annular tube (5), and the nozzles (6) are rotatably connected to the annular tube (5) at an angle. The sealing cap (3) is equipped with a steering mechanism that controls the reciprocating rotation of the nozzle (6) to expand the atomization range and angle; The bottom of the drying tank (1) is fixedly connected to a cooling curved pipe (10) for low-temperature drying of polysaccharides.

2. The low-temperature spray drying apparatus for polysaccharide feed additives according to claim 1, characterized in that: The steering mechanism includes a lifting ring (61) fixedly connected to the top of the sealing cover (3), and multiple arc-shaped grooves (62) are opened at equal angles along the axial direction on the lifting ring (61); The nozzle (6) is externally fixed with a cam (63), which rotates in a circular motion and contacts the bottom of the lifting ring (61) and the surface of the arc groove (62).

3. The low-temperature spray drying apparatus for polysaccharide feed additives according to claim 1, characterized in that: A water inlet pipe (51) is connected through the annular pipe (5), and a sealing cover plate (52) is fixedly sleeved on the outside of the water inlet pipe (51). The sealing cover (3) has a sliding groove (53) that slides with the water inlet pipe (51), and the sealing cover plate (52) is sealed and fitted to the side of the sliding groove (53).

4. The low-temperature spray drying apparatus for polysaccharide feed additives according to claim 1, characterized in that: The drying tank (1) is equipped with a power mechanism that controls the material frame (2) to shake up and down to disperse the material and maintain a uniform cooling state.

5. A low-temperature spray drying apparatus for polysaccharide feed additives according to claim 4, characterized in that: The power mechanism includes a hollow guide cylinder (7) fixedly installed on the bottom surface of the drying tank (1). A lifting rod (8) is telescopically connected in the hollow guide cylinder (7). There are two lifting rods (8) symmetrically arranged about the central axis of the material frame (2). A lifting bracket (9) is fixedly connected between the two lifting rods (8).

6. A low-temperature spray drying apparatus for polysaccharide feed additives according to claim 5, characterized in that: The drying tank (1) is rotatably connected to an external threaded shaft (43) along the axial direction, and a toothed shaft (42) is fixedly connected to the upper end face of the external threaded shaft (43); The drive shaft (4) has a toothed groove (41) below it that mates with the toothed shaft (42); The lifting bracket (9) is threaded onto the external threaded shaft (43).

7. A low-temperature spray drying apparatus for polysaccharide feed additives according to claim 6, characterized in that: The bottom surface of the drying tank (1) is rotatably connected to a drive shaft (11), and a fan blade (12) is fixedly installed on the drive shaft (11); A pinion (13) is fixedly mounted on the drive shaft (11), and a gear ring (14) is meshed next to the pinion (13). The gear ring (14) is fixedly connected to the external threaded shaft (43).

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