Drying device for acetaminophen tablet production
By designing a support feeding and double-layer drying mechanism, and utilizing components such as heating plates, actuating rods, and electromagnets, the problems of tablet breakage and high loss were solved, achieving efficient and low-loss drying of acetaminophen tablets.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI BBCA LIKANG PHARMA
- Filing Date
- 2025-04-07
- Publication Date
- 2026-05-22
AI Technical Summary
In the existing drying equipment, the tablets are easily broken and have high loss during the production of acetaminophen tablets. They are also prone to falling out of the gaps during vibration, which increases the amount of cleaning work.
The design includes a supporting feeding mechanism and a double-layer drying mechanism, comprising a supporting feeding mechanism and first and second drying mechanisms. Utilizing components such as heating plates, actuating rods, limiting sieve baskets, and electromagnets, and working in concert with a controller, the design achieves uniform dispersion and efficient drying of tablets, reducing tablet loss and cleaning work.
It effectively prevents tablets from breaking and falling, improves drying efficiency, reduces tablet loss, and reduces cleaning workload.
Smart Images
Figure CN224266674U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of acetaminophen processing equipment, and specifically discloses a drying device for the production of acetaminophen tablets. Background Technology
[0002] Acetaminophen, also known as paracetamol or acetaminophen, is a commonly used over-the-counter antipyretic and analgesic drug, belonging to the category of nonsteroidal anti-inflammatory drugs. In the production process of acetaminophen tablets, the acetaminophen tablets produced by the wet granulation process need to be dried using a drying device to separate the acetaminophen tablets that are stuck together, so as to ensure the quality of the acetaminophen tablets.
[0003] Chinese patent CN118066802A discloses a drying device for the production of acetaminophen tablets, including a housing, several feed pipes at the top of the housing, a motor and a discharge pipe at the bottom of the housing, and a functional shaft coaxially connected to the output shaft of the motor inside the housing. The functional shaft is sequentially equipped with a separation conveying structure, a transport guiding structure, an eccentric cam, and a drive gear. The separation conveying structure is used to separate clump-like acetaminophen tablets, and the transport guiding structure is used in conjunction with the transport guiding structure to change the direction of the acetaminophen tablets. A vibratory pre-drying structure that can contact the eccentric cam is located in the middle of the housing. Below the vibratory pre-drying structure, the housing interior is equipped with a structure that can cooperate with the vibratory pre-drying structure and the drive gear. This centrifugal drying structure solves the problem of uneven drying caused by particle adhesion during the wet granulation process in the traditional drying of acetaminophen tablets. However, in the above-mentioned drying device, after the tablets fall onto the screen layer along the inclined plate, they are easily broken due to collision with the screen layer, increasing the loss of tablets. Since the cam rotation requires a certain space, in order to ensure the vibration effect of the vibrating primary drying mechanism, a certain gap must be left between the outer side of the vibrating primary drying mechanism and the shell. This can easily cause the tablets to fall out of the gap during vibration, increasing the loss of tablets and the workload of cleaning the above-mentioned device. Therefore, in order to solve the above problems, this utility model proposes a drying device for the production of acetaminophen tablets. Utility Model Content
[0004] The present invention aims to provide a drying device for the production of acetaminophen tablets, which can prevent acetaminophen tablets from breaking during contact with the limiting screen basket, reduce the loss of acetaminophen tablets, and prevent acetaminophen tablets from falling from the limiting screen basket into the gap between the limiting screen basket and the outer shell during vibration drying, further reducing the loss of acetaminophen tablets and reducing the workload of users in cleaning the device.
[0005] This utility model is achieved through the following technical solution:
[0006] A drying apparatus for producing acetaminophen tablets includes a supporting feeding mechanism and a first drying mechanism. The first drying mechanism is located inside the supporting feeding mechanism, and a second drying mechanism is located above the first drying mechanism. The supporting feeding mechanism includes a shell, with two symmetrically arranged sliding grooves at both ends of the lower part of the shell. A feeding hopper is located in the middle of the lower end of the shell. The first drying mechanism includes two symmetrically arranged mounting plates, with a first telescopic rod connected to one end of each mounting plate that is far apart from the other. A heating plate is connected above each mounting plate, and a support is located above the heating plate. A plurality of linearly arranged actuating rods are movably connected to one side of the support, and a baffle is located on one side of each actuating rod. The second drying mechanism includes a limiting screen basket, with a plurality of linearly arranged springs connected to both ends of the limiting screen basket. A support plate is connected below each spring. A third telescopic rod is located above both ends of the limiting screen basket, and a top plate is connected to the outer side of each third telescopic rod. Hot air blowers are located at the four corners of the top plate.
[0007] As a further feature of the above solution, both ends of the outer shell are provided with through holes to facilitate the adjustment of the positions of components such as the mounting plate and heating plate. Both sides of the outer shell are connected with transparent observation plates to facilitate users to observe the operation of the components inside the outer shell. Both sides of the lower part of the outer shell are connected with multiple support legs arranged in a linear array to provide stable support for the outer shell and its connecting components.
[0008] As a further feature of the above design, protrusions are provided on both sides of the lower part of the mounting plate. These protrusions are slidably connected to the sliding grooves, which can restrict the movement direction of the mounting plate and the heating plate. Two first reserved holes are symmetrically provided on one side of the outer shell to facilitate the placement of the baffle. A plug is provided inside the first reserved hole to prevent the acetaminophen tablet from falling out of the first reserved hole during the drying process. Mounting grooves are provided at both ends of the bracket. Two insert rods are connected to the end of the bracket near the first reserved hole. Both ends of the baffle are slidably engaged with the mounting grooves. Two insertion holes are provided at the end of the baffle near the insertion rods. These insertion holes are slidably engaged with the insertion rods to restrict the position of the baffle and keep it stable during use. A second reserved hole is provided on one side of the insertion hole, allowing the user to insert their finger into the second reserved hole to adjust the position of the baffle.
[0009] As a further feature of the above solution, limit holes are provided on both sides of the outer shell, and connecting plates are connected to the upper ends of both ends of the bracket. The end of the connecting plate near the bracket passes through the interior of the limit hole and is slidably connected to the limit hole, which can restrict the movement direction of the connecting plate and the bracket and provide support for the bracket. A second telescopic rod is connected to one side of the connecting plate, which can provide power for the reciprocating movement of the bracket and the baffle.
[0010] As a further feature of the above solution, the limiting sieve basket has multiple sieve holes inside to facilitate the dropping of tablets. The support plate is detachably connected to the outer shell for easy installation and maintenance. An iron block is connected to the upper center of the support plate. An electromagnet is connected to the retracted end of the third telescopic rod, which allows the iron block to be attracted by the electromagnet and pulled upwards along with the limiting sieve basket before drying the acetaminophen tablets. This reduces the distance between the limiting sieve basket and the top plate, thus reducing the distance the acetaminophen tablets need to fall from the feed pipe onto the limiting sieve basket. The third telescopic rod is detachably connected to the top plate, and the top plate is detachably connected to the outer shell for easy installation and maintenance. A feed pipe is connected to the upper center of the top plate to facilitate the injection of the acetaminophen tablets to be dried into the limiting sieve basket. The air outlet of the hot air blower is connected to the cavity formed between the top plate and the outer shell, allowing high-temperature air to be injected into the cavity between the top plate and the outer shell for preliminary drying of the acetaminophen tablets on the limiting sieve basket.
[0011] As a further feature of the above scheme, a controller is provided on one side of the supporting feeding mechanism to facilitate the control of the operation of relevant components in the device.
[0012] In this invention, the heating plate has two sides that slide against the inner walls of the outer shell.
[0013] The present invention has the following beneficial effects during use:
[0014] The design of the two sliding grooves at both ends of the outer shell can restrict the movement direction of the mounting plate and the heating plate while providing support for the aforementioned components. The combination of the bracket, the second telescopic rod, and the actuating rod in the first drying mechanism can disperse the stacked acetaminophen tablets after they fall onto the heating plate through the sieve holes of the limiting sieve basket. During the further drying of the acetaminophen tablets using the heating plate, the actuating rod can move the acetaminophen tablets to ensure full contact between the acetaminophen tablets and the heating plate, thereby improving the drying efficiency.
[0015] The baffle can block one side of the support after drying, weakening the effect of the lever. This allows the acetaminophen tablets to be pushed towards the heating plate away from the first telescopic rod and fall into the hopper during the movement of the support and baffle, where they are discharged from the bottom.
[0016] The combination of the iron block, electromagnet, and third telescopic rod in the second drying mechanism can, before drying the acetaminophen tablets, use the electromagnet to attract the iron block and pull it upwards along with the limiting screen basket, thereby reducing the distance between the limiting screen basket and the top plate and shortening the distance the acetaminophen tablets need to fall from the feed pipe onto the limiting screen basket. After feeding is completed, the electromagnet is turned off, and the electromagnet squeezes the iron block and spring during the reciprocating extension and retraction of the third telescopic rod. Under the action of the spring rebound, the limiting screen basket vibrates, shaking the stacked acetaminophen tablets apart, making it easier for the acetaminophen tablets to pass through the screen holes and fall onto the heating plate. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a perspective view of the present invention;
[0019] Figure 2 This is a front sectional perspective view of the present invention;
[0020] Figure 3 This is a perspective view of the material feeding mechanism in this utility model;
[0021] Figure 4 This is a perspective view of the combination of the mounting plate, heating plate and first telescopic rod in this utility model;
[0022] Figure 5 This is a perspective view of the combination of the bracket and the baffle in this utility model;
[0023] Figure 6 This is a perspective view of the combination of the limiting screen basket and the third telescopic rod in this utility model.
[0024] In the diagram: 1. Supporting feeding mechanism; 2. First drying mechanism; 3. Second drying mechanism; 4. Controller; 11. Outer shell; 111. First reserved hole; 112. Limiting hole; 113. Through hole; 114. Slide groove; 12. Transparent observation plate; 13. Support leg; 14. Feed hopper; 15. Block; 21. Mounting plate; 211. Protrusion; 22. First telescopic rod; 23. Heating plate; 24. Bracket; 241. Actuating rod; 242. Mounting groove; 243. Insert rod; 244. Connecting plate; 25. Baffle; 251. Second reserved hole; 252. Insertion hole; 26. Second telescopic rod; 31. Limiting screen basket; 311. Screen hole; 312. Spring; 313. Support plate; 32. Iron block; 33. Electromagnet; 34. Third telescopic rod; 35. Top plate; 351. Feed pipe; 36. Hot air blower. Detailed Implementation
[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.
[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The following will refer to the appendix... Figures 1-6 This application will be described in detail with reference to the embodiments.
[0027] This embodiment discloses a drying apparatus for the production of acetaminophen tablets, including a supporting feeding mechanism 1 and a first drying mechanism 2. The first drying mechanism 2 is disposed inside the supporting feeding mechanism 1, and a second drying mechanism 3 is disposed above the first drying mechanism 2. The supporting feeding mechanism 1 includes a housing 11, with two symmetrically arranged sliding grooves 114 at both ends of the lower part of the housing 11, and a feeding hopper 14 disposed in the middle of the lower end of the housing 11. The first drying mechanism 2 includes two symmetrically arranged mounting plates 21, with a first telescopic rod 22 connected to the ends of the two mounting plates 21 that are far apart from each other. The upper parts of the two mounting plates 21 are... A heating plate 23 is connected to the drying mechanism 3. A support 24 is provided above the heating plate 23. A plurality of linearly arranged actuating rods 241 are movably connected to one side of the support 24. A baffle 25 is provided on one side of each actuating rod 241. The second drying mechanism 3 includes a limiting sieve basket 31. A plurality of linearly arranged springs 312 are connected to both ends of the limiting sieve basket 31. A support plate 313 is connected below each spring 312. A third telescopic rod 34 is provided above both ends of the limiting sieve basket 31. A top plate 35 is connected to the outside of the third telescopic rod 34. A hot air blower 36 is provided at each of the four corners of the top plate 35.
[0028] like Figure 1 and Figure 3 As shown, both ends of the outer shell 11 are provided with through holes 113 to facilitate the adjustment of the position of components such as the mounting plate 21 and the heating plate 23. Both sides of the outer shell 11 are connected with transparent observation plates 12 to facilitate the user to observe the operation of the components inside the outer shell 11. Both sides of the lower part of the outer shell 11 are connected with multiple support legs 13 arranged in a linear array to provide stable support for the outer shell 11 and its connecting components.
[0029] like Figure 2 , Figure 4 and Figure 5As shown, protrusions 211 are provided on both sides of the lower part of the mounting plate 21. The protrusions 211 are slidably connected to the sliding groove 114, which can restrict the movement direction of the mounting plate 21 and the heating plate 23. Two first reserved holes 111 are symmetrically provided on one side of the outer shell 11 to facilitate the installation of the baffle 25. A blocking block 15 is provided inside the first reserved hole 111 to prevent the acetaminophen tablet from falling out of the first reserved hole 111 during the drying process. Mounting grooves 242 are provided at both ends of the bracket 24. Two insert rods 243 are connected to one end of the bracket 24 near the first reserved hole 111. Both ends of the baffle 25 are slidably engaged with the mounting groove 242. Two insertion holes 252 are provided at one end of the baffle 25 near the insert rods 243. The insertion holes 252 are slidably engaged with the insert rods 243, which can limit the position of the baffle 25 and keep the baffle 25 stable during use. A second reserved hole 251 is provided on one side of the insertion hole 252, which allows the user to insert their finger into the second reserved hole 251 to adjust the position of the baffle 25.
[0030] like Figure 1 , Figure 3 and Figure 5 As shown, the outer shell 11 has limit holes 112 on both sides, and the upper ends of the bracket 24 are connected to connecting plates 244. The end of the connecting plate 244 near the bracket 24 passes through the interior of the limit hole 112 and is slidably connected to the limit hole 112, which can restrict the movement direction of the connecting plate 244 and the bracket 24 and provide support for the bracket 24. A second telescopic rod 26 is connected to one side of the connecting plate 244, which can provide power for the reciprocating movement of the bracket 24 and the baffle 25.
[0031] like Figure 2 and Figure 6As shown, the limiting sieve basket 31 has multiple sieve holes 311 inside to facilitate the dropping of tablets. The support plate 313 is detachably connected to the outer shell 11, which facilitates the installation and maintenance of the support plate 313. An iron block 32 is connected to the upper center of the support plate 313. An electromagnet 33 is connected to the retracted end of the third telescopic rod 34. Before the acetaminophen tablets are dried, the electromagnet 33 can attract the iron block 32 and pull the iron block 32 and the limiting sieve basket 31 upward together to reduce the gap between the limiting sieve basket 31 and the top plate 35, thereby reducing the amount of acetaminophen tablets falling from the feed pipe 351. The distance on the limiting screen basket 31 is such that the third telescopic rod 34 is detachably connected to the top plate 35, and the top plate 35 is detachably connected to the outer shell 11, which facilitates the installation and maintenance of the third telescopic rod 34 and the top plate 35. The upper middle part of the top plate 35 is connected to the feed pipe 351, which facilitates the injection of the acetaminophen tablets to be dried into the limiting screen basket 31. The air outlet of the hot air blower 36 is connected to the cavity formed between the top plate 35 and the outer shell 11, which facilitates the injection of high-temperature air into the cavity between the top plate 35 and the outer shell 11 to perform preliminary drying treatment on the acetaminophen tablets on the limiting screen basket 31.
[0032] like Figure 1 As shown, a controller 4 is provided on one side of the supported feeding mechanism 1 to facilitate the control of the operation of the relevant components in the device.
[0033] The drying apparatus for producing acetaminophen tablets disclosed in this embodiment, before use, uses a controller 4 to sequentially turn on multiple hot air blowers 36, injecting high-temperature airflow into the cavity between the top plate 35 and the outer casing 11. The controller 4 then turns on two heating plates 23 and simultaneously controls two third telescopic rods 34 to extend and activate electromagnets 33, pushing the electromagnets 33 towards the iron block 32. The adsorption is observed through a transparent observation plate 12. After the electromagnets 33 contact the iron block 32, the third telescopic rods 34 are controlled to retract, pulling the limiting screen basket 31 upwards. During this pulling process, the spring 312 is pulled, causing a reversible deformation. When the 34 shrinks to its limit, a sufficient amount of wet-granulated acetaminophen tablets are injected into the limiting screen basket 31 through the feed pipe 351. The extension of the third telescopic rod 34 is controlled to reduce the deformation of the spring 312. The electromagnet 33 is turned off, causing the limiting screen basket 31 to fall. The reciprocating extension and retraction of the third telescopic rod 34 drives the electromagnet 33 to move up and down repeatedly to squeeze the iron block 32, repeatedly compressing the spring 312, causing the limiting screen basket 31 to vibrate up and down. During the vibration, the two supports 24 are always fixed to the inner ends of the outer shell 11 by the second telescopic rod 26 to prevent the supports 24 from interfering with the position of the limiting screen basket 31. The two heating plates 23 are in close contact with each other at their respective ends.
[0034] During vibration, the acetaminophen tablets inside the limiting sieve basket 31 slowly separate, increasing contact with the high-temperature airflow inside the outer shell 11 for initial drying. After initial drying, the acetaminophen tablets fall through the sieve holes 311 onto the heating plate 23, absorbing heat from the heating plate 23 for further drying. During this further drying process, the falling of the acetaminophen tablets inside the outer shell 11 is observed again through the transparent observation plate 12. Once all the acetaminophen tablets in the limiting sieve basket 31 have fallen onto the heating plate 23, the controller 4 activates the electromagnet 33, causing it to attract the iron block 32 and then controlling the third telescopic rod 34 to retract. The empty limiting screen basket 31 is pulled upwards to keep the lower plane of the limiting screen basket 31 separated from the upper plane of the support 24. The protrusions on both sides of the mounting plate 21 prevent the acetaminophen tablets from falling off the heating plate 23 and the mounting plate 21. The controller 4 controls the extension and retraction of the two second telescopic rods 26 in sequence, which drives the connecting plate 244 to slide in the limiting hole 112, and drives the support 24 and the toggle rod 241 below it to move on the heating plate 23, so that the stacked acetaminophen tablets are evenly distributed on the heating plate 23, and the contact surface between the acetaminophen tablets and the heating plate 23 is adjusted to improve the drying efficiency.
[0035] After drying, the second telescopic rod 26 is retracted, confining the two supports 24 to the inner ends of the outer casing 11. The two blocks 15 are removed from the first pre-drilled hole 111 in sequence. A finger is inserted into the second pre-drilled hole 251 to pick up the baffle 25. One end of the baffle 25 is inserted into one mounting groove 242 until the end of the baffle 25 away from the insertion hole 252 is inserted into the other mounting groove 242. The insertion rod 243 is inserted into the insertion hole 252. The finger is pulled out of the second pre-drilled hole 251. The controller 4 controls the second telescopic rod 26 to extend, causing the supports 24 and the blocks to push the acetaminophen tablets away from the first telescopic rod 22 towards the heating plate 23. The second telescopic rod 26 is then closed. At this time, the baffle 25 is located above the hopper 14. The controller 4 is then used to control the extension of the second telescopic rod 26 in sequence. The two first telescopic rods 22 are retracted, and the mounting plate 21 and heating plate 23 are pulled out of the through hole 113 by a certain length. The first telescopic rods 22 drive the two mounting plates 21 and heating plates 23 to move in opposite directions. During the movement, the gap between the two heating plates 23 increases. The dried acetaminophen tablets fall from the increased gap into the discharge hopper 14 and are discharged from the bottom of the discharge hopper 14. After discharge, the first telescopic rod 22 is extended and the second telescopic rod 26 is retracted to reset the heating plate 23, mounting plate 21 and bracket 24. The baffle 25 is removed from one side of the bracket 24 and pulled out from the first reserved hole 111. After the block 15 is reset, the above feeding and drying operations are repeated to continue the drying of acetaminophen tablets.
[0036] The components disclosed in this utility model for a drying device used in the production of acetaminophen tablets, including the controller 4, transparent observation plate 12, support leg 13, feeding hopper 14, block 15, first telescopic rod 22, heating plate 23, actuating rod 241, insertion rod 243, second telescopic rod 26, spring 312, electromagnet 33, third telescopic rod 34, and hot air blower 36, are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.
[0037] The above are merely preferred embodiments of the present utility model and are 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 drying apparatus for producing acetaminophen tablets, comprising a supporting feeding mechanism and a first drying mechanism, characterized in that, The inner side of the supporting feeding mechanism is provided with a first drying mechanism, and the upper part of the first drying mechanism is provided with a second drying mechanism. The supporting feeding mechanism includes a shell, and two sliding grooves are symmetrically arranged at both ends of the lower part of the shell. A feeding hopper is provided in the middle of the lower end of the shell. The first drying mechanism includes two symmetrically arranged mounting plates. The ends of the two mounting plates that are far apart from each other are connected to a first telescopic rod. A heating plate is connected above the two mounting plates. A bracket is provided above the heating plate. A plurality of linearly arrayed actuating rods are movably connected to one side of the bracket. A baffle is provided on one side of the actuating rods. The second drying mechanism includes a limiting screen basket. A plurality of linearly arrayed springs are connected to both ends of the limiting screen basket. A support plate is connected below the springs. A third telescopic rod is provided above both ends of the limiting screen basket. A top plate is connected to the outer side of the third telescopic rod. A hot air blower is provided at each of the four corners of the top plate.
2. The drying apparatus for producing acetaminophen tablets according to claim 1, characterized in that, Both ends of the outer shell are provided with through holes, both sides of the outer shell are connected with transparent observation plates, and both sides of the lower part of the outer shell are connected with multiple support legs arranged in a linear array.
3. The drying apparatus for producing acetaminophen tablets according to claim 1, characterized in that, The mounting plate has protrusions on both sides below, which are slidably connected to the sliding groove. Two first reserved holes are symmetrically arranged on one side of the outer shell, and a plug is provided inside the first reserved hole. The bracket has mounting grooves at both ends. Two insert rods are connected to the end of the bracket near the first reserved hole. Both ends of the baffle are slidably engaged with the mounting groove. Two insertion holes are provided at the end of the baffle near the insertion rods. The insertion holes are slidably engaged with the insertion rods. A second reserved hole is provided on one side of the insertion hole.
4. The drying apparatus for producing acetaminophen tablets according to claim 1, characterized in that, Limiting holes are provided on both sides of the outer shell, and connecting plates are connected to the top of both ends of the bracket. The end of the connecting plate near the bracket passes through the interior of the limiting hole and is slidably connected to the limiting hole. A second telescopic rod is connected to one side of the connecting plate.
5. A drying apparatus for producing acetaminophen tablets according to claim 1, characterized in that, The limiting screen basket has multiple screen holes inside. The support plate is detachably connected to the outer shell. An iron block is connected to the upper center of the support plate. An electromagnet is connected to the retracted end of the third telescopic rod. The third telescopic rod is detachably connected to the top plate. The top plate is detachably connected to the outer shell. A feed pipe is connected to the upper center of the top plate. The air outlet of the hot air blower is connected to the cavity formed between the top plate and the outer shell.
6. A drying apparatus for producing acetaminophen tablets according to claim 1, characterized in that, A controller is installed on one side of the supporting feeding mechanism.