A high efficiency coating machine

Abstract

This application relates to the field of coating machine technology and discloses a high-efficiency coating machine, including a coating machine component, a liquid component, and a hot air circulation component. This high-efficiency coating machine, through the linkage drive of the roller and the nozzle, can significantly improve coating uniformity. When the first servo motor starts, it drives the rotating shaft and the nozzle to rotate synchronously in opposite directions via the first and second bevel gears. Simultaneously, the rotating shaft drives the roller to rotate, allowing the atomizing nozzle to atomize and spray the coating liquid at multiple angles within the counter-rotating roller, covering the surface of the solid dosage form. Combined with the three-dimensional tumbling effect of the spiral guide plate, the coating quality is improved. Furthermore, the through-holes and spiral guide plate work together to enhance material flowability, adapting to various solid dosage forms such as tablets, capsules, and microgranules, meeting the diverse production needs of the pharmaceutical industry. The liquid component improves the mixing degree between the coating liquid and excipients, providing a stable coating liquid for the coating process.

Description

Technical Field

[0001] This application relates to the field of coating machine technology, specifically a high-efficiency coating machine. Background Technology

[0002] In the production of solid pharmaceutical dosage forms such as pills, a coating process is required to mask the pill's odor, prevent moisture and light exposure, and control the release site and rate of release during use. Sugar or other film-forming materials are coated onto the outer surface of the pill, and after drying, they form one or more layers of multifunctional protective layers of varying thicknesses and elasticities that adhere tightly to the surface. This multifunctional protective layer is called coating.

[0003] An existing patent (publication number: CN215274581U) discloses a high-efficiency coating machine, including a housing with an inlet and an outlet. A liquid storage tank is located above the housing, and the liquid storage tank has a spray nozzle. A mixing tank is located inside the housing, and the mixing tanks are hinged to the housing using symmetrically arranged fixed shafts. A driven gear is mounted on the fixed shaft. A self-locking drive motor is fixed inside the housing, and the self-locking drive motor has a drive gear that meshes with the driven gear. A pulsator is located at the lower end of the mixing tank, and the pulsator has a pulsator motor fixed to the lower end of the mixing tank. This utility model provides a high-efficiency coating machine where the pulsator on the internal mixing tank is used to coat materials. Simultaneously, the mixing tank can be rotated to discharge the coated material. It features a high degree of automation and provides uniform coating and high efficiency.

[0004] While the device in the aforementioned comparative document can achieve convenient material discharge, its stirring mechanism is relatively simple, resulting in insufficient tumbling of solid formulations. It also cannot be linked with the spraying component, affecting coating efficiency. To solve the above problems, a high-efficiency coating machine is proposed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a high-efficiency coating machine that enables the mixing component to work in conjunction with the spraying component, optimizing the tumbling of solid dosage forms while improving coating efficiency, making it more practical.

[0006] To achieve the above objectives, this application provides the following technical solution: a high-efficiency coating machine, comprising a coating machine assembly, a liquid material assembly, and a hot air circulation assembly. The coating machine assembly includes a coating machine body and a rotating shaft rotatably fitted inside the coating machine body. One end of the rotating shaft is connected to a roller. The inner wall of the roller has evenly distributed through holes. Multiple spiral guide vanes are fixedly connected to the inner wall of the roller. A nozzle is installed on the inner wall of the rotating shaft through a sealed bearing. One end of the nozzle extends into the interior of the roller and is equipped with evenly distributed atomizing nozzles. A first servo motor is fixedly connected to the back of the coating machine body. A first bevel gear is fixedly connected to the output end of the first servo motor. Second bevel gears are fixedly connected to the outer surfaces of the rotating shaft and the nozzle. Both second bevel gears mesh with the first bevel gear. The liquid material assembly includes a liquid tank fixedly connected to the back of the coating machine body. A liquid pump is installed on one side of the liquid tank. The inner wall of the output end of the liquid pump is fixedly connected to the outer surface of the nozzle through a sealed bearing.

[0007] The above-described scheme, through the linkage drive of the roller and the nozzle, can significantly improve the coating uniformity. When the first servo motor starts, it drives the rotating shaft and the nozzle to rotate synchronously in opposite directions through the first and second bevel gears. At the same time, the rotating shaft drives the roller to rotate, so that the atomizing nozzle can spray the coating liquid at multiple angles in the counter-rotating roller, covering the surface of the solid dosage form. Combined with the three-dimensional tumbling effect of the spiral guide plate, the coating quality is improved. At the same time, the through holes and the spiral guide plate work together to enhance the flowability of the material, making it suitable for various solid dosage forms such as tablets, capsules, and micro-pellets, meeting the diverse production needs of the pharmaceutical industry. The liquid component can improve the mixing degree between the coating liquid and excipients, providing a stable coating liquid for the coating process.

[0008] Furthermore, an annular baffle is fixedly connected to the front of the roller, and a detachable sealing door is installed on the front of the coating machine body.

[0009] The above scheme reduces the chance of solid dosage forms accidentally flying out of the drum by setting an annular baffle, and further reduces the chance of solid dosage forms rotating out of the drum by setting a sealing door.

[0010] Furthermore, two second servo motors are fixedly connected to the top of the liquid tank, and a stirring rod is fixedly connected to the output end of each second servo motor. Multiple stirring blades are fixedly connected to the outer surface of each stirring rod.

[0011] With the above scheme, when the second servo motor is started, it will drive multiple stirring blades to rotate through the stirring rod. The rotation of the stirring blades can agitate the coating liquid and auxiliary materials inside the liquid tank, so that they can be mixed quickly, which is beneficial to the subsequent coating work.

[0012] Furthermore, the top of the liquid tank is equipped with an injection port, and the bottom of the liquid tank is equipped with a drain port. Both the injection port and the drain port are connected to the interior of the liquid tank.

[0013] The above scheme allows for easy addition of coating liquid and auxiliary materials to the liquid tank via the injection port, and easy discharge of the coating liquid from the liquid tank via the drain port.

[0014] Furthermore, the hot air circulation assembly includes an air filter and an exhaust fan. A heating device is installed on the top of the air filter, and an air inlet pipe is connected to the top of the heating device. One end of the air inlet pipe is connected to the interior of the coating machine body.

[0015] With the above scheme, when the air filter is activated, it can filter the gas entering the coating machine body from the external environment, and when the heating device is activated, it can heat the filtered gas. Finally, the heated and filtered gas is transported to the coating machine body for drying through the air inlet pipe.

[0016] Furthermore, an exhaust pipe is installed on one side of the exhaust fan, and one end of the exhaust pipe is installed on the top of the coating machine body and connected to the interior of the coating machine body.

[0017] The above method allows the gas inside the coating machine to be extracted through the exhaust pipe when the exhaust fan is started.

[0018] Furthermore, the rotating shaft is fixedly connected to the drum, the rotating shaft is rotatably connected to the nozzle, and the nozzle is rotatably connected to the liquid pump.

[0019] The above scheme defines the relationship between the rotating shaft, roller, nozzle, and liquid pump, allowing the nozzle to rotate inside the roller and liquid pump. This improves the linkage effect between the roller and the atomizing nozzle, effectively enhancing coating efficiency and effectiveness.

[0020] Furthermore, two support piles are fixedly connected to the bottom surface of the liquid tank.

[0021] The above solution, through the installation of support piles, can further improve the stability of the liquid tank and facilitate its use.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] This high-efficiency coating machine significantly improves coating uniformity through the linkage of the roller and the nozzle. When the first servo motor starts, it drives the rotating shaft and the nozzle to rotate synchronously in opposite directions through the first and second bevel gears. At the same time, the rotating shaft drives the roller to rotate, allowing the atomizing nozzle to spray the coating liquid at multiple angles within the counter-rotating roller, covering the surface of the solid dosage form. Combined with the three-dimensional tumbling effect of the spiral guide plate, the coating quality is improved. Meanwhile, the through holes and the spiral guide plate work together to enhance material flowability, making it suitable for various solid dosage forms such as tablets, capsules, and micro-pellets, meeting the diverse production needs of the pharmaceutical industry. The liquid component can improve the mixing degree between the coating liquid and excipients, providing a stable coating liquid for the coating process. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall front view of the structure of this application;

[0025] Figure 2 This is a schematic diagram of the overall bottom view of the structure of this application;

[0026] Figure 3 This is a partial top view of the structure of this application.

[0027] Figure 4 This is a partial front view schematic diagram of the structure of this application;

[0028] Figure 5 This is a partial cross-sectional planar structural diagram of the structure of this application.

[0029] In the picture:

[0030] 1. Coating machine components; 101. Coating machine body; 102. Rotating shaft; 103. Roller; 104. Through hole; 105. Spiral guide vane; 106. Spray pipe; 107. Atomizing nozzle; 108. First servo motor; 109. First bevel gear; 110. Second bevel gear; 111. Liquid pump; 112. Annular baffle; 113. Sealing door; 2. Liquid material assembly; 201. Liquid tank; 202. Second servo motor; 203. Stirring rod; 204. Stirring blade; 205. Liquid injection port; 206. Liquid discharge port; 207. Support pile; 3. Hot air circulation assembly; 301. Air filter; 302. Heating device; 303. Air inlet pipe; 304. Exhaust pipe; 305. Exhaust fan. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] Please see Figure 1 , Figure 3 and Figure 4 This embodiment of a high-efficiency coating machine includes a coating machine assembly 1, a liquid material assembly 2, and a hot air circulation assembly 3. The coating machine assembly 1 includes a coating machine body 101 and a rotating shaft 102 rotatably sleeved inside the coating machine body 101. One end of the rotating shaft 102 is connected to a roller 103. The inner wall of the roller 103 has evenly distributed through holes 104, which facilitate the flow of air between the roller 103 and the coating machine body 101, thus facilitating subsequent drying. Multiple spiral guide vanes 105 are fixedly connected to the inner wall of the roller 103, which are beneficial for material tumbling. A spray pipe 106 is installed on the inner wall of the rotating shaft 102 through a sealed bearing. One end extends into the interior of the roller 103 and is equipped with evenly distributed atomizing nozzles 107. A first servo motor 108 is fixedly connected to the back of the coating machine body 101. A first bevel gear 109 is fixedly connected to the output end of the first servo motor 108. A second bevel gear 110 is fixedly connected to the outer surface of the rotating shaft 102 and the nozzle 106. Both second bevel gears 110 mesh with the first bevel gear 109. When the first servo motor 108 starts, it will cause the rotating shaft 102 and the nozzle 106 to rotate in opposite directions on the same axis through the first bevel gear 109 and the second bevel gear 110. Combined with the guiding effect of the spiral guide plate 105, the material tumbling and spray coverage are synchronized and optimized, realizing dynamic linkage.

[0033] Please see Figure 2 , Figure 3 and Figure 5The liquid material assembly 2 includes a liquid material tank 201 fixedly connected to the back of the coating machine body 101. A liquid pump 111 is installed on one side of the liquid material tank 201. The inner wall of the output end of the liquid pump 111 is fixedly connected to the outer surface of the nozzle 106 through a sealed bearing. When the liquid pump 111 is started, it can transport the coating liquid inside the liquid material tank 201 to the nozzle 106. The rotating shaft 102 is fixedly connected to the roller 103, the rotating shaft 102 is rotatably connected to the nozzle 106, and the nozzle 106 is rotatably connected to the liquid pump 111, thus defining the rotating shaft 102, the roller 103, and the nozzle 106. The relationship between the nozzle 106 and the liquid pump 111 allows the nozzle 106 to rotate inside the roller 103 and the liquid pump 111, which is beneficial to the linkage effect between the roller 103 and the atomizing nozzle 107, and can effectively improve the coating efficiency and effect. The front of the roller 103 is fixedly connected to the annular baffle 112, and the front of the coating machine body 101 is equipped with a detachable sealing door 113. The annular baffle 112 can reduce the probability of solid dosage form accidentally flying out of the roller 103, and the sealing door 113 can further reduce the probability of solid dosage form rotating out of the roller 103.

[0034] Please see Figure 2 , Figure 4 and Figure 5 Two second servo motors 202 are fixedly connected to the top of the liquid tank 201. Each second servo motor 202 has a stirring rod 203 fixedly connected to its output end. Multiple stirring blades 204 are fixedly connected to the outer surface of each stirring rod 203. When the second servo motor 202 starts, it drives the stirring rod 203 to rotate the multiple stirring blades 204. The rotation of the stirring blades 204 agitates the coating liquid and auxiliary materials inside the liquid tank 201, allowing for rapid mixing, which is beneficial for subsequent coating work. The top of the liquid tank 201 is equipped with an injection port 205, and the bottom of the liquid tank 201 is equipped with a drain port 206. Both the injection port 205 and the drain port 206 are connected to the interior of the liquid tank 201. The injection port 205 allows for easy addition of coating liquid and auxiliary materials into the liquid tank 201, and the drain port 206 allows for easy discharge of the coating liquid inside the liquid tank 201. Two support piles 207 are fixedly connected to the bottom surface of the liquid tank 201. The support piles 207 further improve the stability of the liquid tank 201 and facilitate its use.

[0035] Please see Figure 1 , Figure 2 and Figure 3The hot air circulation assembly 3 includes an air filter 301 and an exhaust fan 305. A heating device 302 is installed on the top of the air filter 301, and an air inlet pipe 303 is connected to the top of the heating device 302. One end of the air inlet pipe 303 is connected to the interior of the coating machine body 101. When the air filter 301 is activated, it can filter the gas entering the coating machine body 101 from the external environment. When the heating device 302 is activated, it can heat the filtered gas. Finally, the heated and filtered gas is transported to the coating machine body 101 for drying through the air inlet pipe 303. An exhaust pipe 304 is installed on one side of the exhaust fan 305. One end of the exhaust pipe 304 is installed on the top of the coating machine body 101 and is connected to the interior of the coating machine body 101. When the exhaust fan 305 is activated, it can extract the gas inside the coating machine body 101 through the exhaust pipe 304.

[0036] In this embodiment, the uniformity of coating can be significantly improved by the linkage drive of the roller 103 and the nozzle 106. When the first servo motor 108 starts, it drives the rotating shaft 102 and the nozzle 106 to rotate synchronously in opposite directions through the first bevel gear 109 and the second bevel gear 110. At the same time, the rotating shaft 102 drives the roller 103 to rotate. This allows the atomizing nozzle 107 to atomize and spray the coating liquid at multiple angles in the counter-rotating roller 103, covering the surface of the solid dosage form. Combined with the three-dimensional tumbling effect of the spiral guide plate 105, the coating quality is improved. At the same time, the through hole 104 and the spiral guide plate 105 work together to enhance the flowability of the material, making it suitable for various solid dosage forms such as tablets, capsules, and micro-pellets, meeting the diverse production needs of the pharmaceutical industry. The liquid component 2 can improve the mixing degree between the coating liquid and the excipients, providing a stable coating liquid for coating work.

[0037] The working principle of the above embodiment is as follows: the solid dosage form is loaded into the drum 103, and then the sealing door 113 is closed. The first servo motor 108 drives the rotating shaft 102 to rotate, which in turn drives the drum 103 to rotate around the axis. The spiral guide vanes 105 fixed on the inner wall of the drum 103 push the material to tumble in three dimensions during the rotation. At the same time, the through hole 104 allows hot air to penetrate the material layer, enhancing the drying effect. The liquid tank 201 is injected with coating liquid and excipients through the liquid injection port 205. The second servo motor 202 drives the stirring rod 203 and stirring blades 204 to rotate at high speed to ensure uniform mixing of the liquid. The liquid pump 111 delivers the mixed coating liquid to the atomizing nozzle 107 through the spray pipe 106. The sealed bearing is nested inside the rotating shaft 102 and achieves synchronous rotation in the opposite direction to the rotating shaft 102 through the meshing relationship between the first bevel gear 109 and the second bevel gear 110. This allows the atomizing nozzle 107 to spray coating liquid from multiple angles when the solid dosage form is tumbling, covering all dead angles. The air filter 301 is responsible for purifying the air entering the system to ensure that it is dust-free and meets pharmaceutical standards. The heating device 302 is used to heat the filtered air. The air inlet pipe 303 delivers hot air into the body of the coating machine 101 and contacts the solid dosage form inside the roller 103 through the through hole 104. The exhaust pipe 304 and the exhaust fan 305 are responsible for exhausting moisture and waste gas and maintaining airflow circulation within the system.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency coating machine, comprising a coating machine assembly (1), a liquid material assembly (2), and a hot air circulation assembly (3), characterized in that: The coating machine assembly (1) includes a coating machine body (101) and a rotating shaft (102) rotatably sleeved inside the coating machine body (101). One end of the rotating shaft (102) is connected to a roller (103). The inner wall of the roller (103) has evenly distributed through holes (104). A plurality of spiral guide vanes (105) are fixedly connected to the inner wall of the roller (103). A nozzle (106) is installed on the inner wall of the rotating shaft (102) through a sealed bearing. One end of the nozzle (106) extends into the interior of the roller (103) and is equipped with evenly distributed atomizing nozzles (107). The back of the coating machine body (101) is fixed. A first servo motor (108) is connected to the output end of the first servo motor (108), and a first bevel gear (109) is fixedly connected to the output end of the first servo motor (108). A second bevel gear (110) is fixedly connected to the outer surface of the rotating shaft (102) and the nozzle (106). Both second bevel gears (110) mesh with the first bevel gear (109). The liquid material assembly (2) includes a liquid material tank (201) fixedly connected to the back of the coating machine body (101). A liquid pump (111) is installed on one side of the liquid material tank (201). The inner wall of the output end of the liquid pump (111) is fixedly connected to the outer surface of the nozzle (106) through a sealed bearing.

2. The high-efficiency coating machine according to claim 1, characterized in that: An annular baffle (112) is fixedly connected to the front of the roller (103), and a detachable sealing door (113) is installed on the front of the coating machine body (101).

3. The high-efficiency coating machine according to claim 1, characterized in that: Two second servo motors (202) are fixedly connected to the top of the liquid tank (201). Each second servo motor (202) has a stirring rod (203) fixedly connected to its output end. Each stirring rod (203) has multiple stirring blades (204) fixedly connected to its outer surface.

4. The high-efficiency coating machine according to claim 1, characterized in that: The liquid tank (201) has an injection port (205) installed on the top and a drain port (206) installed on the bottom. Both the injection port (205) and the drain port (206) are connected to the interior of the liquid tank (201).

5. The high-efficiency coating machine according to claim 1, characterized in that: The hot air circulation assembly (3) includes an air filter (301) and an exhaust fan (305). A heating device (302) is installed on the top of the air filter (301). An air inlet pipe (303) is connected to the top of the heating device (302). One end of the air inlet pipe (303) is connected to the interior of the coating machine body (101).

6. The high-efficiency coating machine according to claim 5, characterized in that: The exhaust fan (305) is equipped with an exhaust pipe (304) on one side. One end of the exhaust pipe (304) is installed on the top of the coating machine body (101) and is connected to the interior of the coating machine body (101).

7. The high-efficiency coating machine according to claim 1, characterized in that: The rotating shaft (102) is fixedly connected to the drum (103), the rotating shaft (102) is rotatably connected to the nozzle (106), and the nozzle (106) is rotatably connected to the liquid pump (111).

8. A high-efficiency coating machine according to claim 1, characterized in that: The bottom surface of the liquid tank (201) is fixedly connected to two support piles (207).

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