Spray feeding device suitable for ultrafine powder wet granulation

Abstract

The utility model relates to the technical field of wet granulation, in particular to a spray feeding device suitable for superfine powder wet granulation, which comprises a spray head, a 316 stainless steel rod and a silicone tube. The top end of the spraying head is made of planar circular stainless steel with a pinhole, and a polytetrafluoroethylene head is embedded in the pinhole; the bottom of the spray head adopts a stainless steel pipe and is connected with a silica gel hose through a connecting valve; and the silica gel hose is connected with the peristaltic pump. Liquid can be uniformly sprayed on the surface of materials through the device, and fine powder of the materials cannot fly due to the fact that compressed gas does not need to be introduced.

Description

Technical Field

[0001] This utility model relates to the field of wet granulation technology, specifically a spray feeding device suitable for wet granulation of ultrafine powder. Background Technology

[0002] The conventional granulation process involves premixing the material in a wet granulator, then spraying in a binder for granulation. Conventional granulation equipment uses compressed air to atomize the liquid and spray it onto the material. When the material is extremely fine (D90 < 10 μm), the compressed air blows the material around inside the granulator, clogging the exhaust valve and causing material to splash out from the lid and body, resulting in abnormal content. This design eliminates the need for compressed air, thus preventing fine powder from splashing out. This invention effectively avoids the drawbacks of conventional spray guns and mitigates the risk of uneven mixing caused by directly pouring in the binder. Utility Model Content

[0003] The purpose of this invention is to provide a spray feeding device suitable for wet granulation of ultrafine powders, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A spray feeding device suitable for wet granulation of ultrafine powder includes a spray head with a diameter of about 5-8 cm. The spray head has pinholes on its front side, which are circular. The spray head is connected by a stainless steel rod, which is connected to a transparent pipe through a connecting valve. The pipe is connected to a peristaltic pump.

[0006] Preferably, the spray head is made of stainless steel and has a groove, which is connected to the top of the wet granulation machine by a clamp.

[0007] Preferably, the spray nozzle is made of polytetrafluoroethylene and embedded in the spray head.

[0008] Preferably, the stainless steel rod is perpendicular to the spray head, and the other end is connected to a silicone hose via a connecting valve.

[0009] Preferably, the silicone tubing is connected to the peristaltic pump, and the other end is placed in the dispensing tank.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This spray feeding device, suitable for wet granulation of ultrafine powders, disperses the binder through a porous structure, ensuring uniform binder addition while avoiding material splashing caused by conventional spray feeding. It is suitable for granulation of active pharmaceutical ingredients with small particle sizes (D90 < 10 μm), and is simple and feasible to operate, with significant improvement results. Attached Figure Description

[0012] Figure 1 Frontal structural sectional view

[0013] Figure 2 Enlarged view of the top of the spray nozzle

[0014] Figure 3 3D overall structure diagram Detailed Implementation

[0015] 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.

[0016] Please see Figures 1-3 As shown, this utility model provides a technical solution:

[0017] A spray feeding device suitable for wet granulation of ultrafine powder includes a spray head (1), a 316 stainless steel rod and a silicone hose, characterized in that: the top of the spray head (1) is a flat shape with a pinhole (2), and a polytetrafluoroethylene head (3) is embedded in the pinhole; the spray head is connected to the stainless steel rod (4), the stainless steel rod has a connecting valve (5), the connecting valve is connected to the silicone hose (6), the silicone hose is connected to the peristaltic pump through a slot, and the other end is placed in the liquid preparation tank.

[0018] The above method involves adding ultrafine powder to a wet granulator, premixing it, connecting a spraying device, turning on the stirring paddle, and then turning on the peristaltic pump. The binder is then evenly sprayed onto the material. Once the binder has been added, the peristaltic pump is turned off, the wet granulator is shut down, and the material is discharged, resulting in a soft material with good uniformity.

[0019] In this embodiment, preferably, the spray head is made of 316 stainless steel, is flat, has a diameter of 5-8 cm, and has 50-100 pinholes arranged in a ring on its surface. A polytetrafluoroethylene (PTFE) head is embedded within each pinhole. A 316 stainless steel rod is perpendicularly connected to the spray head, and the rod is 30-50 cm long. The other end of the stainless steel rod is connected to a silicone hose via a connecting valve. The silicone hose is connected to the stainless steel rod and, through a groove, to a peristaltic pump with a rotation speed of 0-300 rpm.

[0020] Through the above method, the adhesive can be evenly added to the material through the atomization hole by the peristaltic pump, and a soft material prepared from ultrafine powder can be obtained.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. Specifically, a spray feeding device suitable for wet granulation of ultrafine powder, comprising a spray head (1), a 316 stainless steel rod, and a silicone hose, characterized in that: The top of the spray head (1) is a flat shape with a pinhole (2), and a polytetrafluoroethylene head (3) is embedded in the pinhole; the spray head is connected to the stainless steel rod (4), and there is a connecting valve (5) on the stainless steel rod. The connecting valve is connected to the silicone hose (6), and the silicone hose is connected to the peristaltic pump through a slot. The other end is placed in the liquid preparation tank.

2. The spray feeding device for wet granulation of ultrafine powder according to claim 1, characterized in that: The spray head is made of 316 stainless steel and is flat. The diameter of the spray head is 5-8cm and the surface has 50-100 pinholes arranged in a ring. A polytetrafluoroethylene head is embedded in the pinhole.

3. The spray feeding device for wet granulation of ultrafine powder according to claim 1, characterized in that: The 316 stainless steel rod is vertically connected to the spray head, and the rod is 30-50cm long. The other end of the stainless steel rod is connected to the silicone hose through a connecting valve.

4. A spray feeding device suitable for wet granulation of ultrafine powder according to claim 1, characterized in that: The silicone tubing is connected to the stainless steel rod, and is connected to the peristaltic pump through a slot in the middle. The peristaltic pump has a rotation speed of 0 rpm to 300 rpm.

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