Crushing device for acetaminophen tablet production

Abstract

The utility model discloses a crushing device for acetaminophen tablet production, which comprises a rack, a barrel shell is mounted on the rack, a motor is mounted at the front end of the barrel shell, an output shaft of the motor is connected with a rotating shaft, the rotating shaft is symmetrically sleeved with supporting frames, the supporting frames are connected to two ends of an inner grinding barrel, and an outer grinding barrel is sleeved outside the inner grinding barrel. The upper part of the outer curved surface of the outer grinding barrel is connected to the inner wall of the barrel shell through a supporting rod, and a screen is arranged at the lower part of the outer grinding barrel; the grinding machine is simple in structure, reasonable in design and novel and unique in thought, the motor drives the inner grinding cylinder to rotate, the outer grinding teeth of the inner grinding cylinder and the inner grinding teeth of the outer grinding cylinder rotate relatively to grind raw materials between the teeth into powder, the screen is used for filtering, then powder is obtained, powder particles are uniform, the powder processing speed is high, and the grinding efficiency is high. In addition, the meshed temperature between the inner grinding teeth and the outer grinding teeth is increased and decreased through rotating wind of the fan blades, and powder is not affected.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical machinery technology, and in particular to a pulverizing device for the production of acetaminophen tablets. Background Technology

[0002] In the pharmaceutical industry, drugs are categorized into preparations, powders, granules, and tablets. The manufacture of powders, granules, and tablets involves processing raw drug materials into powder.

[0003] In the production process, some excipients usually need to be further crushed, ground, and refined. Existing crushing devices have low working efficiency, unsatisfactory crushing effect, and high operating noise. The crushing chamber heats up quickly and reaches high temperatures, which can affect the performance of excipients and thus the drug's efficacy. Therefore, this application discloses a crushing device for the production of acetaminophen tablets. Utility Model Content

[0004] The purpose of this invention is to address existing problems by providing a pulverizing device for the production of acetaminophen tablets.

[0005] This utility model is achieved through the following technical solution: a pulverizing device for the production of acetaminophen tablets, including a frame, a cylindrical shell installed on the frame, a motor installed at the front end of the cylindrical shell, the output shaft of the motor connected to a rotating shaft, symmetrical support frames sleeved on the rotating shaft, the support frames connected to both ends of an inner grinding cylinder, an outer grinding cylinder sleeved on the outer side of the inner grinding cylinder, the upper part of the outer curved surface of the outer grinding cylinder connected to the inner wall of the cylindrical shell by a support rod, a screen set at the lower part of the outer grinding cylinder, support rings sleeved at both ends of the screen, and the support rings connected to the end of the cylindrical shell.

[0006] As a further improvement to the above solution, a hopper is inserted through the top of the cylinder shell, and the lower end of the hopper is inserted into the feed inlet of the outer grinding cylinder, while a feed cylinder is connected through the bottom of the cylinder shell.

[0007] Raw materials are added through the hopper, flowing from the feed inlet of the outer grinding cylinder into the space between the inner grinding teeth and the outer grinding teeth of the inner grinding cylinder. The processed powder falls from the feed cylinder.

[0008] As a further improvement to the above solution, the rear end of the rotating shaft is fitted with a fan blade, and the fan blade is set inside the cylindrical shell, with several air holes provided at the rear end of the cylindrical shell.

[0009] As the fan blades rotate with the shaft, air enters from the rear of the casing and blows through the gap between the inner and outer grinding teeth. This cools down the heat generated by the meshing and friction between the inner and outer grinding teeth, preventing the powder from being heated and affecting the meshing performance of the inner and outer grinding teeth.

[0010] As a further improvement to the above solution, the end of the inner grinding cylinder is connected to an inner end ring, the end of the outer grinding cylinder is connected to an outer end ring, and the outer curved surface diameter of the inner end ring is smaller than the inner curved surface of the outer end ring.

[0011] The material leaks out between the ends of the outer grinding teeth on the inner grinding cylinder by sealing the inner end ring, and the material leaks out between the ends of the inner grinding teeth on the outer grinding cylinder by sealing the outer end ring.

[0012] As a further improvement to the above solution, the outer curved surface of the inner grinding cylinder is provided with a plurality of external grinding teeth in a circumferential and continuous manner, and internal grinding teeth are provided on the outer side of the external grinding teeth. The internal grinding teeth are connected to the inner curved surface of the outer grinding cylinder in a circumferential and continuous manner.

[0013] The relative rotation of the inner and outer grinding cylinders causes the outer and inner grinding teeth to mesh, thereby crushing and grinding the raw materials.

[0014] Compared with the prior art, this utility model has the following advantages: it has a simple structure, reasonable design, and novel and unique concept. The motor drives the inner grinding cylinder to rotate, and the outer grinding teeth of the inner grinding cylinder rotate relative to the inner grinding teeth of the outer grinding cylinder to grind the raw material between the teeth into powder. The powder is then filtered by a screen to obtain powder. The powder particles are uniform and the powder processing speed is fast. In addition, the temperature of the meshing between the inner and outer grinding teeth is raised and lowered by the air of the fan blade rotation, so the powder is not affected. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the first aspect of the present invention.

[0016] Figure 2 This is a schematic diagram of the second aspect of the present invention.

[0017] Figure 3 This is a schematic diagram of the installation structure of the inner and outer grinding cylinders.

[0018] Figure 4 This is a schematic diagram of the installation structure of the fan blades and screen. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] like Figures 1 to 4 As shown, a pulverizing device for producing acetaminophen tablets includes a frame 1, a cylindrical shell 2 mounted on the frame 1, a motor 3 mounted at the front end of the cylindrical shell 2, an output shaft of the motor 3 connected to a rotating shaft 5, symmetrical support frames 6 sleeved on the rotating shaft 5, the support frames 6 connected to both ends of an inner grinding cylinder 7, an outer grinding cylinder 8 sleeved on the outer side of the inner grinding cylinder 7, the upper part of the outer curved surface of the outer grinding cylinder 8 connected to the inner wall of the cylindrical shell 2 by a support rod, a screen 9 set at the lower part of the outer grinding cylinder 8, support rings 10 sleeved at both ends of the screen 9, and the support rings 10 connected to the ends of the cylindrical shell 2.

[0021] As a further improvement to the above scheme, the upper part of the cylindrical shell 2 is connected to the hopper 14, and the lower end of the hopper 14 is inserted into the feed inlet 18 of the outer grinding cylinder 8, and the lower part of the cylindrical shell 2 is connected to the feed cylinder 4.

[0022] Raw materials are added through hopper 14. The raw materials flow from the feed port 18 of outer grinding cylinder 8 into the space between the inner grinding teeth 17 of outer grinding cylinder 8 and the outer grinding teeth 16 of inner grinding cylinder 7. The processed powder falls from the feed cylinder 4.

[0023] As a further improvement to the above solution, the rear end of the rotating shaft 5 is sleeved with the fan blade 11, and the fan blade 11 is disposed inside the cylindrical shell 2. Several air holes 15 are provided at the rear end of the cylindrical shell 2.

[0024] As the shaft 5 rotates, the fan blade 11 draws air in from the rear end of the housing and blows it into the gap between the inner and outer grinding teeth 17 and 16. This cools down the heat generated by the meshing friction between the inner and outer grinding teeth 17 and 16, preventing the powder from being heated and affecting the meshing performance of the inner and outer grinding teeth 17 and 16.

[0025] As a further improvement to the above scheme, the end of the inner grinding cylinder 7 is connected to the inner end ring 13, the end of the outer grinding cylinder 8 is connected to the outer end ring 12, and the outer curved surface diameter of the inner end ring 13 is smaller than the inner curved surface of the outer end ring 12.

[0026] The inner end ring 13 blocks the leakage of raw material between the ends of the outer grinding teeth 16 on the inner grinding cylinder 7, and the outer end ring 12 blocks the leakage of raw material between the ends of the inner grinding teeth 17 on the outer grinding cylinder 8.

[0027] As a further improvement to the above solution, the outer curved surface of the inner grinding cylinder 7 is provided with a plurality of external grinding teeth 16 circumferentially and along its length, and the outer side of the external grinding teeth 16 is provided with internal grinding teeth 17, which are connected to the inner curved surface of the outer grinding cylinder 8 along its length and circumferentially.

[0028] The relative rotation of the inner grinding cylinder 7 and the outer grinding cylinder 8 causes the outer grinding teeth 16 and the inner grinding teeth 17 to bite each other, thereby crushing and grinding the raw materials.

[0029] Working principle of a pulverizing device for acetaminophen tablet production:

[0030] Raw materials enter the outer grinding teeth 16 of the inner grinding cylinder 7 from the hopper 14. The motor 3 drives the inner grinding cylinder 7 to rotate through the support frame 6. The outer grinding teeth 16 and the inner grinding teeth 17 of the outer grinding cylinder 8 rotate relative to each other, grinding the raw materials into powder. The powder flows out from the gap between the inner end ring 13 and the outer end ring 12 at the end onto the screen 9. After being filtered by the screen 9, the fine powder falls from the feed hopper 14 and is collected.

[0031] In addition, the rotation of the shaft 5 also drives the fan blades 11 to rotate, which accelerates the flow of the surrounding air to form wind blowing the inner grinding teeth 17. At the same time, a large amount of air enters from the air hole 15 at the rear end of the cylinder shell 2 to provide continuous airflow.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pulverizing apparatus for producing acetaminophen tablets, comprising a frame, wherein a cylindrical shell is mounted on the frame, characterized in that, A motor is installed at the front end of the cylinder shell. The output shaft of the motor is connected to a rotating shaft. Supports are symmetrically sleeved on the rotating shaft. The support frames are connected to both ends of the inner grinding cylinder. An outer grinding cylinder is sleeved on the outer side of the inner grinding cylinder. The upper part of the outer curved surface of the outer grinding cylinder is connected to the inner wall of the cylinder shell through a support rod. A screen is installed at the lower part of the outer grinding cylinder. Support rings are sleeved at both ends of the screen and connected to the end of the cylinder shell.

2. The pulverizing device for producing acetaminophen tablets according to claim 1, characterized in that, A hopper is inserted through the top of the cylinder shell, and the lower end of the hopper is inserted into the feed inlet of the outer grinding cylinder. A feed cylinder is connected through the bottom of the cylinder shell.

3. The pulverizing device for producing acetaminophen tablets according to claim 1, characterized in that, The rear end of the rotating shaft is fitted with a fan blade, and the fan blade is set inside the cylindrical shell. Several air holes are provided at the rear end of the cylindrical shell.

4. The pulverizing device for producing acetaminophen tablets according to claim 1, characterized in that, The inner grinding cylinder is connected to an inner end ring at one end, and the outer grinding cylinder is connected to an outer end ring at one end. The outer curved surface diameter of the inner end ring is smaller than that of the inner curved surface of the outer end ring.

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