A drying device in production of effervescent tablets

Abstract

The utility model relates to effervescent tablet production technical field, and the specific field is a drying device in effervescent tablet production, in order to solve the drying device drying of prior art, scatter leaf simple rotation stirring, axial stirring capacity is weak, the technical problem that the wet material of high moisture content rate, high tackiness of drying chamber bottom is poor, sealing feed mechanism can seal and inject the medicine powder into drying chamber, the upper surface of orifice plate is contacted with the lower end of lifting leaf, the upper surface of lifting leaf is inclined to set, lifting leaf is equipped with multiple circumferential distribution and is connected on input shaft, the input shaft on the upper portion of lifting leaf is connected with multiple scatter leaves in circumferential distribution, and the top of drying chamber is equipped with the powder outlet, and input shaft drives lifting leaf and scatter leaf to rotate, and lifting leaf drives the raw materials on orifice plate to go up to scatter leaf, and then falls under the action of gravity, and hot air passes through orifice plate countercurrent and directly irradiates falling material, compared with the simple rotation stirring, and hot air and raw materials contact more fully, and the wet material drying effect is very good.

Description

Technical Field

[0001] This utility model relates to the field of effervescent tablet production technology, specifically to a drying device used in effervescent tablet production. Background Technology

[0002] In the production process of effervescent tablets, the drying step is crucial, directly impacting the quality, stability, and production efficiency of the tablets. Effervescent tablets, as a special dosage form, use organic acids and basic carbonates as effervescent disintegrants. Once placed in water, they undergo an effervescent reaction instantly, releasing a large amount of carbon dioxide gas. Based on this characteristic, strict drying of the powder used in effervescent tablet production is essential. Only by controlling the moisture content of the powder can premature reactions be effectively prevented during storage and use, thereby ensuring the quality and performance of the effervescent tablets.

[0003] Existing technology uses a rotary flash dryer for drying. Wet material enters the dryer via a screw feeder, where it is dispersed and broken down by a high-speed rotating agitator. This allows for thorough contact with hot air, rapidly completing heat and mass transfer processes and causing moisture evaporation. The dried material is discharged from the top of the dryer with the rising airflow, while larger, undried particles return to the bottom of the dryer under gravity for further drying.

[0004] In existing drying devices, the dispersing blades simply rotate and stir during drying, resulting in weak axial stirring ability. This leads to poor agitation of wet materials with high moisture content and high viscosity at the bottom of the drying chamber, resulting in low drying efficiency. Utility Model Content

[0005] In order to solve the technical problem that the existing drying devices have weak axial stirring ability due to the simple rotation of the dispersing blades, resulting in poor agitation of wet materials with high moisture content and high viscosity at the bottom of the drying chamber, this utility model provides a drying device for the production of effervescent tablets.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a drying device for effervescent tablet production, comprising: a drying chamber, an air inlet pipe connected to the lower part of the drying chamber, high-temperature gas being injected into the bottom of the drying chamber through the air inlet pipe, a perforated plate connected to the inner wall of the drying chamber above the air inlet pipe, a sealing feeding mechanism connected to the side wall of the drying chamber above the perforated plate, the sealing feeding mechanism being able to seal the injection of powder into the drying chamber, the upper surface of the perforated plate contacting the lower end of the lifting blade, the upper surface of the lifting blade being inclined, the lifting blade having multiple circumferentially evenly distributed connecting to the input shaft, multiple dispersing blades being circumferentially evenly distributed on the input shaft above the lifting blade, and a powder discharge port being provided at the top of the drying chamber.

[0007] Preferably, a fixing leaf is provided in the gap between adjacent dispersing leaves in the vertical direction, and the fixing leaves are evenly distributed around the circumference and connected to the inner wall of the drying chamber.

[0008] Preferably, the sealed feeding mechanism includes a feeding cylinder, which is horizontally connected to the side wall of the drying chamber on the upper part of the perforated plate. A conveying shaft is concentrically rotatably connected inside the side wall of the feeding cylinder. A spiral blade is connected to the conveying shaft inside the feeding cylinder. The outer diameter of the spiral blade is equal to the inner diameter of the feeding cylinder. The pitch at both ends of the spiral blade is greater than the pitch in the middle. A hopper is connected to the upper part of the feeding cylinder at the first end along the conveying direction of the spiral blade.

[0009] Preferably, the upper inner wall of the drying chamber is connected to a cone-shaped hopper that is narrower at the top and wider at the bottom. The inner diameter of the upper end of the cone-shaped hopper is equal to the inner diameter of the powder discharge port. The upper end of the cone-shaped hopper is connected to the top wall of the drying chamber. Multiple centrifugal blades are evenly distributed around the input shaft inside the cone-shaped hopper.

[0010] Preferably, the cone is connected to the heating element.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The input shaft drives the lifting blades and dispersing blades to rotate. The lifting blades lift the raw material on the perforated plate to the dispersing blades, and then it falls under the action of gravity. Hot air passes through the perforated plate and blows directly onto the falling material in the opposite direction. Compared with the traditional simple rotation and stirring, the hot air has more sufficient contact with the raw material, and the drying effect of wet material is very good.

[0013] The rising airflow carries fine powder upwards. Under the action of the centrifugal blades, the powder is centrifuged to the inner wall of the cone. The lighter, drier powder overcomes the friction with the cone and is discharged through the discharge port. The powder that is not fully dried falls down under the action of friction to continue drying. This avoids the airflow carrying away undried powder. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic cross-sectional view of the structure of this utility model.

[0016] In the diagram: 1. Drying chamber; 2. Air inlet pipe; 3. Orifice plate; 4. Sealed feeding mechanism; 41. Feed cylinder; 42. Conveying shaft; 43. Spiral blade; 44. Hopper; 5. Lifting blade; 6. Input shaft; 7. Dispersing blade; 8. Fixing blade; 9. Powder discharge port; 10. Conical hopper; 11. Centrifugal blade. Detailed Implementation

[0017] 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.

[0018] The rotary connection described in this device refers to the axial fixation of the bearing by mounting the bearing on the shaft, with a spring retaining ring groove provided on the shaft or shaft hole, and the rotation achieved by locking the elastic retaining ring in the retaining ring groove; the hinge connection refers to the connection method that allows movement through connecting parts such as hinges, pins, and short shafts.

[0019] The present invention will now be described in detail with reference to the accompanying drawings.

[0020] The following is in conjunction with the appendix Figure 1-2 This embodiment describes a drying device for effervescent tablet production, comprising: a drying chamber 1, an air inlet pipe 2 connected to the lower part of the drying chamber 1, high-temperature gas being injected into the bottom of the drying chamber 1 through the air inlet pipe 2, an orifice plate 3 connected to the inner wall of the drying chamber 1 above the air inlet pipe 2, a sealing feeding mechanism 4 connected to the side wall of the drying chamber 1 above the orifice plate 3, the sealing feeding mechanism 4 being able to seal the injection of powder into the drying chamber 1, the upper surface of the orifice plate 3 being in contact with the lower end of the lifting blade 5, the upper surface of the lifting blade 5 being inclined, the lifting blade 5 having multiple circumferentially distributed connecting to the input shaft 6, multiple dispersing blades 7 being circumferentially distributed connecting to the input shaft 6 above the lifting blade 5, and a powder discharge port 9 being provided at the top of the drying chamber 1.

[0021] High-temperature gas is injected into the bottom of the drying chamber 1 through the air inlet pipe 2. The raw material to be dried is transported into the drying chamber 1 through the sealed feeding mechanism 4. The high-temperature gas passes through the perforated plate 3 and exits vertically upwards to dry the raw material. The input shaft 6 is turned on, and the input shaft 6 drives the lifting blade 5 and the dispersing blade 7 to rotate. Multiple dispersing blades 7 are evenly distributed around the circumference of the input shaft 6 above the lifting blade 5, which drives the raw material on the perforated plate 3 to rise to the dispersing blades 7. Then, under the action of gravity, it falls. The hot air passes through the perforated plate 3 and directly hits the falling material in the opposite direction. Compared with the traditional simple rotation and stirring, the hot air has more sufficient contact with the raw material, and the drying effect on wet material is very good. The dried raw material is discharged through the powder discharge port 9 with the rising airflow.

[0022] A fixed leaf 8 is provided in the gap between adjacent dispersing leaves 7 along the vertical direction, and the fixed leaves 8 are evenly distributed around the circumference and connected to the inner wall of the drying chamber 1.

[0023] The fixed leaf 8 and the dispersing leaf 7 work together to enhance the crushing effect and crush the clumps of raw materials.

[0024] The sealed feeding mechanism 4 includes a feeding cylinder 41, which is horizontally connected to the side wall of the drying chamber 1 above the perforated plate 3. A conveying shaft 42 is concentrically rotatably connected inside the side wall of the feeding cylinder 41. A spiral blade 43 is connected to the conveying shaft 42 inside the feeding cylinder 41. The outer diameter of the spiral blade 43 is equal to the inner diameter of the feeding cylinder 41. The pitch at both ends of the spiral blade 43 is greater than the pitch in the middle. A hopper 44 is connected to the upper part of the feeding cylinder 41 at the beginning of the conveying direction of the spiral blade 43.

[0025] The raw material in the hopper 44 enters the feed cylinder 41 and is conveyed into the drying chamber 1 under the action of the spiral blade 43. Since the pitch at both ends of the spiral blade 43 is greater than the pitch in the middle, the raw material accumulates and is squeezed in the middle, achieving sealing while crushing the lumps in the raw material. Then, due to the increased pitch of the spiral blade 43, the squeezed raw material is dispersed, avoiding a large amount of material being fed at once.

[0026] The upper inner wall of the drying chamber 1 is connected to a cone 10 that is narrow at the top and wide at the bottom. The inner diameter of the upper end of the cone 10 is equal to the inner diameter of the powder discharge port 9. The upper end of the cone 10 is connected to the top wall of the drying chamber 1. Multiple centrifugal blades 11 are evenly distributed around the input shaft 6 inside the cone 10.

[0027] The rising airflow carries fine powder upwards, and the input shaft 6 drives the centrifugal blades 11 to rotate. Under the action of the centrifugal blades 11, the powder is centrifuged to the inner wall of the cone 10. The lighter dry powder overcomes the friction with the cone 10 and is discharged through the powder discharge port. The powder that is not fully dried falls down under the action of friction to continue drying, thus avoiding the airflow carrying the undried powder out.

[0028] The cone 10 is connected to the heating element.

[0029] The electric heating element heats the cone 10 to dry the powder that is not fully dried on the inner wall.

[0030] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drying apparatus for the production of effervescent tablets, comprising: Drying chamber (1) is connected to an air inlet pipe (2) at the bottom. High-temperature gas is injected into the bottom of the drying chamber (1) through the air inlet pipe (2). The inner wall of the drying chamber (1) above the air inlet pipe (2) is connected to a perforated plate (3). The features are as follows: the side wall of the drying chamber (1) above the perforated plate (3) is connected to the sealing feeding mechanism (4), the sealing feeding mechanism (4) can seal the injection of medicine powder into the drying chamber (1), the upper surface of the perforated plate (3) is in contact with the lower end of the lifting blade (5), the upper surface of the lifting blade (5) is inclined, the lifting blade (5) is provided with multiple circumferentially distributed connected to the input shaft (6), and multiple dispersing blades (7) are circumferentially distributed on the input shaft (6) above the lifting blade (5), and the top of the drying chamber (1) is provided with a powder discharge port (9).

2. The drying device for effervescent tablet production according to claim 1, characterized in that: A fixed leaf (8) is provided in the gap between adjacent dispersing leaves (7) along the vertical direction. The fixed leaves (8) are evenly distributed around the circumference and connected to the inner wall of the drying chamber (1).

3. The drying device for effervescent tablet production according to claim 1, characterized in that: The sealed feeding mechanism (4) includes a feeding cylinder (41), which is horizontally connected to the side wall of the drying chamber (1) above the perforated plate (3). A conveying shaft (42) is concentrically connected inside the side wall of the feeding cylinder (41). A spiral blade (43) is connected to the conveying shaft (42) inside the feeding cylinder (41). The outer diameter of the spiral blade (43) is equal to the inner diameter of the feeding cylinder (41). The pitch at both ends of the spiral blade (43) is greater than the pitch in the middle. A hopper (44) is connected to the upper part of the feeding cylinder (41) at the beginning of the conveying direction of the spiral blade (43).

4. The drying device for effervescent tablet production according to claim 1, characterized in that: The upper inner wall of the drying chamber (1) is connected to a cone (10) that is narrow at the top and wide at the bottom. The inner diameter of the upper end of the cone (10) is equal to the inner diameter of the powder discharge port (9). The upper end of the cone (10) is connected to the top wall of the drying chamber (1). Multiple centrifugal blades (11) are evenly distributed around the input shaft (6) inside the cone (10).

5. A drying device for effervescent tablet production according to claim 1, characterized in that: The cone (10) is connected to the heating element.

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