Defoaming device of soft capsule mixing tank

Abstract

The utility model relates to the field of defoaming devices, in particular to a defoaming device of a soft capsule batching tank. Comprising a tank body, a stirring assembly and a piston plate, the stirring assembly is communicated to the interior of the tank body, the piston plate is arranged in the tank body in a sliding mode, a through hole is formed in the piston plate, the piston plate abuts against the upper portion of liquid in the tank body, and the stirring assembly stirs the liquid in the tank body to make centrifugal motion and discharges bubbles from the through hole. A one-way valve is arranged in the through hole, a plurality of springs are arranged on the piston plate, the two ends of the springs are connected to the piston plate and the top of the inner wall of the tank body respectively, a negative pressure assembly is arranged at the top of the tank body and communicated to the interior of the tank body, and the stirring assembly comprises a motor, a transmission shaft and a plurality of stirring blades. The motor is arranged at the bottom of the tank body, the transmission shaft is in transmission connection with the motor, and the plurality of blades are connected with the transmission shaft, so that air can be prevented from being redrawn into liquid during stirring.

Description

Technical Field

[0001] This utility model relates to the field of defoaming devices, specifically a defoaming device for a soft capsule ingredient container. Background Technology

[0002] Soft capsules are sealed, soft capsules made of materials such as gelatin, glycerin, and water. They encapsulate liquid, semi-solid, or suspension-like active ingredients, and the outer shell is typically made of gelatin (animal-derived) or plant-based gums (such as hydroxypropyl methylcellulose, suitable for vegetarians), giving them flexibility. The soft capsule mixing tank is a key piece of equipment in the soft capsule production process, primarily used to uniformly mix the drug ingredients and excipients to form a suitable gel solution for capsule compression. During the mixing process, many fine air bubbles are present within the raw material liquid. These bubbles are trapped inside the capsule shell during compression, forming white spots, dents, or internal cavities on the capsule surface. This can also lead to unstable capsule weight, rough surface, and reduced transparency, affecting the product's value. Therefore, defoaming treatment of the raw materials is crucial, directly impacting the quality and stability of the final product.

[0003] In existing technologies, defoaming treatment is generally required for raw material liquids, typically achieved through single or combined methods such as vacuum defoaming, static defoaming, and stirring defoaming. For example, Chinese Patent CN220198334U describes a defoaming device for soft capsule production, comprising a frame with a feed pipe at one end and a stirring assembly on the frame. The stirring assembly includes a drive motor, a fixed plate, a connecting column, a first bevel gear, a first transmission rod, a second transmission rod, a second bevel gear, a third bevel gear, a first stirring rod, and a second stirring rod. The drive motor is mounted at the top of the frame. Through the stirring assembly, the first and second stirring rods rotate slowly in different directions. Both the first and second stirring rods are equipped with defoaming needles, which eliminate air bubbles generated inside the raw material during their slow rotation.

[0004] However, during the defoaming process, the stirring of the raw material liquid by the stirring device easily forms a vortex at the top of the liquid. As the vortex continues to rotate, the air at the top of the liquid is brought back into the liquid and bubbles are formed again, resulting in a longer defoaming cycle. In order to improve the defoaming efficiency, a defoaming device for soft capsule mixing tank is proposed. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, this utility model provides a defoaming device for a soft capsule ingredient container.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] The present invention relates to a defoaming device for a soft capsule ingredient container, comprising a container body, a stirring assembly, and a piston plate. The stirring assembly is connected to the interior of the container body, and the piston plate is slidably disposed inside the container body. The piston plate has a through hole and abuts against the liquid inside the container. The stirring assembly agitates the liquid inside the container, causing it to move centrifugally and expel air bubbles through the through hole.

[0008] Furthermore, a one-way valve is provided inside the through hole.

[0009] Furthermore, the through hole is located at the center of the piston plate.

[0010] Furthermore, the piston plate is provided with several springs, and the two ends of the several springs are respectively connected to the piston plate and the top of the inner wall of the tank.

[0011] Furthermore, a negative pressure assembly is provided at the top of the tank and connected to the inside of the tank. The negative pressure assembly provides negative pressure to the inside of the tank and draws out some gas and discharges it to the outside of the tank.

[0012] Furthermore, the stirring assembly includes a motor, a drive shaft, and several stirring blades. The motor is located at the bottom of the tank, the drive shaft is connected to the motor, and the several blades are connected to the drive shaft.

[0013] Furthermore, several of the stirring blades are arranged in a spiral upward configuration on the drive shaft.

[0014] Furthermore, a transparent observation window is provided on the side wall of the tank.

[0015] The beneficial effects of this invention are as follows: By installing a piston plate inside the tank, the piston plate, made of a lightweight sealing material, can fit against the side wall of the tank and cover the liquid. The piston plate flattens the liquid surface, reducing the area of ​​the funnel-shaped vortex. When the piston plate is pressed against the liquid surface, it prevents gas from being drawn in and forming bubbles due to liquid agitation, thus reducing the formation of new bubbles. When the liquid is stirred by the stirring assembly, the bubbles inside the liquid rise to the surface and are discharged through the through-holes on the piston plate. The centrifugal force generated by the stirring assembly also helps to dislodge bubbles, gradually reducing the number of bubbles in the liquid. Attached Figure Description

[0016] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0019] Legend: 1. Tank body; 2. Negative pressure assembly; 3. Motor; 4. Drive shaft; 5. Stirring blades; 6. Piston plate; 7. Spring; 8. Check valve; 9. Transparent observation window. Detailed Implementation

[0020] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0021] like Figures 1-2 As shown; a defoaming device for a soft capsule ingredient container includes a container body 1, a stirring assembly and a piston plate 6. The stirring assembly is connected to the inside of the container body 1, and the piston plate 6 is slidably disposed inside the container body 1. A through hole is provided on the piston plate 6. The piston plate 6 abuts against the liquid inside the container body 1. The stirring assembly agitates the liquid inside the container body 1 to make it move centrifugally and discharge bubbles through the through hole.

[0022] Because existing defoaming technologies often create vortices at the top of the liquid during stirring, resulting in a lower liquid level at the center and a higher level at the outer edges, the vortex forms a funnel shape. As the vortex continues to rotate, air from the top of the liquid is drawn back into the liquid, causing new bubbles to form and prolonging the defoaming cycle. To improve defoaming efficiency, a piston plate 6 is installed inside the tank 1. The piston plate 6 is made of a lightweight sealing material that fits snugly against the side wall of the tank 1 and covers the liquid, flattening the surface and reducing the area of ​​the funnel-shaped vortex. When the piston plate 6 is pressed against the liquid surface, it prevents gas from being drawn in and forming bubbles, thus reducing the formation of new bubbles. During stirring, the agitator causes bubbles inside the liquid to rise to the surface and be discharged through the holes in the piston plate 6. The centrifugal force generated by the agitator also helps to dislodge bubbles, gradually reducing the number of bubbles in the liquid.

[0023] To prevent air from being drawn into the liquid through the through-hole of the piston plate 6 during stirring, thus preventing air from being entrained in the liquid, a one-way valve 8 is provided in the through-hole in one embodiment. Due to the action of the piston plate 6, after the bubbles are stirred and discharged from the liquid by the stirring assembly, they accumulate under the piston plate 6 and are discharged through the one-way valve 8 in the through-hole. Because of the one-way valve 8, the air can only be discharged from the bottom of the piston plate 6 upwards, but cannot be discharged from the top of the piston plate 6 into the liquid below the piston plate 6. This gradually reduces the gas below the piston plate 6, reducing the amount of air re-entrained into the liquid due to the stirring, thereby improving the defoaming efficiency.

[0024] Because the liquid forms a vortex after being stirred, and the center of the vortex is located at the inner center of the tank 1, the vortex area on the liquid surface becomes smaller under the flattening action of the piston plate 6. In order to prevent the liquid from being discharged from the one-way valve 8 when the gas is discharged from the bottom of the piston plate 6 to the top of the piston plate 6, in one embodiment, the through hole is set at the center of the piston plate 6. Since the liquid level at the center of the liquid vortex is always lower than the height of the piston plate 6, when the through hole and the one-way valve 8 are in the area corresponding to the center of the vortex, the liquid in the area below the through hole cannot be discharged from the through hole and the one-way valve 8, and only air can be discharged.

[0025] Furthermore, due to the varying volumes of liquid added to tank 1, the stirring action of the agitator creates vortices that easily raise the liquid level. This rise in the liquid level pushes the piston plate 6 upwards, resulting in poor pressure leveling of the liquid by the piston plate 6. Consequently, a large gas space is formed below the piston plate 6. The larger the gas space, the easier it is for air to be drawn into the liquid and form bubbles due to the stirring action. To avoid this problem, in one embodiment, several springs 7 are provided on the piston plate 6. The two ends of the springs 7 are respectively connected to the piston plate 6 and the top of the inner wall of tank 1. The springs 7 provide a portion of the thrust to the piston plate 6 to compress the liquid level, reducing the liquid space below the piston plate 6 and further reducing the amount of air re-drawn into the liquid.

[0026] Furthermore, a negative pressure component 2 is provided at the top of the tank 1 and connected to the inside of the tank 1. The negative pressure component 2 provides negative pressure to the inside of the tank 1 and draws out some gas and discharges it to the outside of the tank 1. The negative pressure component 2 only provides partial negative pressure to draw out the gas below the piston plate 6. In order to prevent the negative pressure component 2 from also drawing out the liquid, the negative pressure provided by the negative pressure component 2 should not be too large.

[0027] In one embodiment, the stirring assembly includes a motor 3, a drive shaft 4, and several stirring blades 5. The motor 3 is located at the bottom of the tank 1, the drive shaft 4 is connected to the motor 3, and the several blades are connected to the drive shaft 4. Since the piston plate 6 is located above the inside of the tank 1 in the above embodiment, in order to fully stir the liquid in the tank 1, the motor 3 is located at the bottom of the tank 1, and the drive shaft 4 passes through the bottom of the tank 1 to the inside of the tank 1, and the stirring is carried out by the stirring blades 5 on the drive shaft 4.

[0028] Because the stirring blades 5 in the prior art are generally symmetrically arranged on the drive shaft 4, the contact space and area between the stirring blades 5 and the liquid is small, resulting in a small centrifugal force of the liquid. However, when used for defoaming soft capsule liquid, several stirring blades 5 are arranged in a spiral upward manner on the drive shaft 4. By arranging several stirring blades 5 in a spiral upward manner, a larger contact space and area with the liquid can be formed, resulting in a stronger stirring effect on the liquid, a greater centrifugal force, and a higher efficiency in removing bubbles from the liquid.

[0029] Furthermore, in order to facilitate the observation of the bubble discharge status of the liquid inside the tank 1, in one embodiment, a transparent observation window 9 is provided on the side wall of the tank 1; the state of the liquid inside the tank 1 can be observed through the transparent observation window 9, and when the bubbles in the liquid are discharged, the machine can be stopped in time and the soft capsule liquid can be poured out for further processing to avoid excessive defoaming.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A defoaming device for a soft capsule ingredient container, characterized in that: The device includes a tank, a stirring assembly, and a piston plate. The stirring assembly is connected to the interior of the tank, and the piston plate is slidably disposed inside the tank. The piston plate has a through hole and abuts against the liquid inside the tank. The stirring assembly agitates the liquid inside the tank, causing it to undergo centrifugal motion and expelling air bubbles through the through hole.

2. The defoaming device for a soft capsule ingredient container according to claim 1, characterized in that: A one-way valve is installed inside the through hole.

3. The defoaming device for a soft capsule ingredient container according to claim 1, characterized in that: The through hole is located at the center of the piston plate.

4. The defoaming device for a soft capsule ingredient container according to claim 1, characterized in that: The piston plate is provided with several springs, and the two ends of the springs are respectively connected to the piston plate and the top of the inner wall of the tank.

5. The defoaming device for a soft capsule ingredient container according to claim 1, characterized in that: A negative pressure assembly is provided at the top of the tank and connects to the inside of the tank. The negative pressure assembly provides negative pressure to the inside of the tank and draws out some gas and discharges it to the outside of the tank.

6. The defoaming device for a soft capsule ingredient container according to claim 1, characterized in that: The stirring assembly includes a motor, a drive shaft, and several stirring blades. The motor is located at the bottom of the tank, the drive shaft is connected to the motor, and the several blades are connected to the drive shaft.

7. The defoaming device for a soft capsule ingredient container according to claim 6, characterized in that: Several of the stirring blades are arranged in a spiral upward configuration on the drive shaft.

8. The defoaming device for a soft capsule ingredient container according to claim 1, characterized in that: A transparent observation window is provided on the side wall of the tank.

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