A coating device

Abstract

The utility model relates to a medicine production equipment technical field especially relates to a coating device, the coating device of the utility model adopts the mode of mutual buckling of pot body and cover to form the sugar-coating pot, wherein the cover can rotate relative to the pot body, which realizes the sealing rotation between the two. The hot air conveying mechanism, material supply mechanism and syrup supply mechanism are all arranged on the cover which cannot rotate, so that the discharge pipe which can be opened and closed is arranged at the lower part of the pot body, and automatic discharge can be realized by the rotation of the pot body. In addition, in the present application, the hot air conveying mechanism can also blow the materials and syrup output from the material supply mechanism and syrup supply mechanism in addition to supplying hot air into the pot body, which is a two-in-one structure design.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical production equipment technology, and in particular to a coating device. Background Technology

[0002] Existing coating machines are widely used in the pharmaceutical, chemical, and food industries. Their main function is to coat the surface of materials with a sugar coating or film coating. Currently, coating machines are mainly operated by workers or supply equipment. The unprocessed pellets produced in the previous pelleting process are put into the pot, and syrup or other liquid materials are added to the pot. As the pot rotates continuously and hot air is introduced, the syrup or other liquid coating on the surface of the unprocessed pellets solidifies, thus achieving coating.

[0003] For example, patent CN205411677U discloses a pharmaceutical sugar coating machine that achieves automatic feeding, solving the problem of low efficiency in the dispensing of existing vegetarian pills. However, in this patent, the pot body is open, and the syrup is prone to splashing and stringing during its rotation. Furthermore, although the patent tilts the pot body and considers its own rotation and discharge, the formed product still needs to be manually removed from the pot during the later discharge process, which is very troublesome. Utility Model Content

[0004] To achieve the above objectives, this utility model provides a coating device, comprising:

[0005] Base;

[0006] A sugar coating pan includes a pan body and a lid. The pan body is rotatably mounted on a base via a rotating shaft. A drive motor for driving the rotating shaft is provided on the base. An opening is provided on one side of the pan body. The lid is mounted on the base and can seal the opening. The lid can rotate relative to the pan body. A feed pipe and an exhaust pipe are connected to the lid. An openable and closable discharge pipe is provided at the bottom of the lid.

[0007] A hot air conveying mechanism, the output end of which is connected to the outward end of the feed pipe;

[0008] A material supply mechanism, the output end of which is connected to the feed pipe;

[0009] The syrup supply mechanism has its output end connected to the feed pipe and located between the material supply mechanism and the cap.

[0010] In some possible implementations, the material supply mechanism includes a material tank, a connecting pipe connected to the material tank, and a weighing chamber disposed on the connecting pipe. A weighing sensor is disposed in the weighing chamber, and a switch valve is disposed between the bottom of the weighing chamber and the connecting pipe. The weighing sensor can control the opening and closing of the switch valve. The material tank is mounted on a base by a bracket, and one end of the connecting pipe is connected to the feed pipe via a tee connector. The material tank, weighing chamber, and connecting pipe are all located above the feed pipe.

[0011] In some possible implementations, the syrup supply mechanism includes a syrup tank, a syrup pipe disposed at the bottom of the syrup tank, and a metering pump disposed on a connecting pipe. The syrup tank is mounted on the base by a bracket, and one end of the syrup pipe is connected to the feed pipe via a tee connector in the area between the connecting pipe and the feed pipe. The syrup tank, metering pump, and syrup pipe are all located above the feed pipe.

[0012] In some possible implementations, the hot air conveying mechanism includes an air inlet hood, a filter screen disposed inside the air inlet hood, an air inlet pipe communicating with the air inlet hood, and an air inlet fan disposed on the air inlet pipe. The air outlet end of the air inlet pipe is connected to the outward end of the feed pipe, and an electric heating box is disposed between the air inlet fan and the feed pipe.

[0013] In some possible implementations, the exhaust pipe is located in the middle of the cover, and the exhaust pipe protrudes from the cover toward the pot body to form an exhaust mesh cylinder, and the side wall of the exhaust mesh cylinder is provided with a plurality of exhaust holes.

[0014] In some possible implementations, a number of inclined baffles are provided on the inner wall of one circumferential side of the pot body.

[0015] In some possible implementations, the lower part of the cover is inclined downwards and has an irregularly shaped horn-shaped bucket. One end of the discharge pipe is connected to the discharge end of the irregularly shaped horn-shaped bucket. A gate is provided at the inlet end of the irregularly shaped horn-shaped bucket. The gate can slide on the cover. A drive arm is provided on the gate. The outward end of the drive arm moves through the sliding groove hole of the cover. A telescopic cylinder is provided on the outer side of the cover. The telescopic end of the telescopic cylinder is connected to the outward end of the drive arm. The gate always blocks the sliding groove hole.

[0016] In some possible implementations, guide blocks are provided on both sides of the sliding hole on the inner side of the cover, and the two guide blocks can respectively restrict the two sides of the gate.

[0017] In some possible implementations, a sealing edge is provided on the outer periphery of the inner side of the cover, which protrudes outward. The sealing edge is fitted onto the outer periphery of the pot body on the side located at the opening, and a sealing ring is provided between the inner side of the sealing edge and the outer wall of the pot body.

[0018] Compared to existing technologies, the advantages of this invention are as follows: The coating device of this invention uses a pot body and a lid that interlock to form a coating pot, wherein the lid can rotate relative to the pot body, thus achieving a sealed rotation between the two. The hot air conveying mechanism, material supply mechanism, and syrup supply mechanism are all located on the non-rotating lid, ensuring that a discharge pipe that can be opened and closed is located at the bottom of the pot body, allowing for automatic material discharge through the rotation of the pot body. Furthermore, in this application, the hot air conveying mechanism not only supplies hot air into the pot body but also simultaneously blows the material and syrup output from the material supply mechanism and the syrup supply mechanism, achieving two benefits in one structural design. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the 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.

[0020] Figure 1 This is a schematic diagram of the coating device provided in an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the sugar coating pan provided in an embodiment of the present utility model;

[0022] Figure 3 This is a partial structural schematic diagram of a sugar coating pan provided for another embodiment of the present invention.

[0023] Figure label:

[0024] Base 10, support 11;

[0025] 20. Sugar coating pot, 21. Pot body, 22. Cover, 23. Opening, 24. Drive motor, 25. Feed pipe, 26. Exhaust pipe, 27. Discharge pipe, 28. Exhaust mesh, 29. Exhaust hole, 2a. Paddle plate, 2b. Special-shaped horn bucket, 2c. Gate, 2d. Drive arm, 2e. Telescopic cylinder, 2f. Slide groove, 2g. Sealing edge;

[0026] Hot air conveying mechanism 30, air inlet hood 31, filter screen 32, air inlet pipe 33, air inlet fan 34, electric heating box 35;

[0027] Material supply mechanism 40, material tank 41, connecting pipe 42, weighing bin 43, switch valve 44;

[0028] Syrup supply mechanism 50, syrup tank 51, syrup pipe 52, metering pump 53. Detailed Implementation

[0029] 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 scope of protection of the present utility model. Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0030] Reference Figures 1 to 3 The coating device shown includes a base 10, a coating pan 20, a hot air conveying mechanism 30, a material supply mechanism 40, and a syrup supply mechanism 50. The coating pan 20 includes a pan body 21 and a cover 22. The pan body 21 is rotatably mounted on the base 10 via a rotating shaft. A drive motor 24 for driving the rotating shaft is provided on the base 10. An opening 23 is provided on one side of the pan body 21. The cover 22 is mounted on the base 10 and can seal the opening 23. The cover 22 can rotate relative to the pan body 21. A feed pipe 25 and an exhaust pipe 26 are connected to the cover 22. An openable and closable discharge pipe 27 is provided at the lower part of the cover 22. The output end of the hot air conveying mechanism 30 is connected to the outward end of the feed pipe 25. The output end of the material supply mechanism 40 is connected to the feed pipe 25. The output end of the syrup supply mechanism 50 is connected to the feed pipe 25 and is located between the material supply mechanism 40 and the cover 22.

[0031] Specifically, in this application, the rotation center of the pot body 21, i.e., the rotation axis, is horizontally positioned. This allows the pot body 21 to automatically use gravity to agitate the material during rotation, facilitating the drying of the sugar coating on the material surface by the hot air ejected from the hot air conveying mechanism 30. In actual embodiments, the rotation axis is mounted on a corresponding structure of the base 10 via bearings, such as a support structure or a bearing seat. The syrup supply mechanism 50 actually supplies hot syrup, while the material supply mechanism 40 in this application supplies large particles, such as pills. The materials supplied by both the syrup supply mechanism 50 and the material supply mechanism 40 can automatically flow into the feed pipe 25, thus eliminating the need for an external active supply device.

[0032] This coating device uses a pot body 21 and a cover 22 that interlock to form a coating pot 20. The cover 22 can rotate relative to the pot body 21, thus achieving a sealed rotation between the two. The hot air conveying mechanism 30, the material supply mechanism 40, and the syrup supply mechanism 50 are all located on the non-rotating cover 22, ensuring that material feeding can be achieved while the pot body 21 is continuously rotating, avoiding interruptions that would affect production efficiency. The lower part of the cover 22 is equipped with an openable and closable discharge pipe 27, which can automatically discharge material by utilizing the rotation of the pot body 21. In addition, in this application, the hot air conveying mechanism 30 can not only supply hot air into the pot body 21, but also simultaneously blow the material and syrup output from the material supply mechanism 40 and the syrup supply mechanism 50, achieving two benefits in one structural design.

[0033] Reference Figure 2 As shown, the exhaust pipe 26 is located in the middle of the cover 22. The exhaust pipe 26 protrudes from the cover 22 into the pot body 21 to form an exhaust mesh cylinder 28. Several exhaust holes 29 are provided on the side wall of the exhaust mesh cylinder 28. The main function of the exhaust mesh cylinder 28 is to exhaust air outward. At the same time, unsolidified coating material that rolls along with the inner wall of the pot body 21 falls and collides with the exhaust mesh cylinder 28, which helps to disperse the clumps of coating material. Therefore, in the above embodiment, the exhaust holes 29 are located in the lower part of the exhaust mesh cylinder 28, which can prevent small syrup particles falling from the coating material from blocking the exhaust holes 29.

[0034] In the above embodiment, to facilitate the removal of unsolidified coating material from the bottom during the rotation of the pot body 21, several inclined baffles 2a are provided on the inner wall of one circumferential side of the pot body 21, wherein the baffles 2a are spirally arranged along the axis of the pot body 21. This arrangement ensures that the unsolidified coating material falling during the clockwise and counterclockwise rotation of the pot body 21 falls on different sides of the pot body 21. That is, during clockwise rotation, the falling unsolidified coating material falls on the side of the pot body 21 away from the cover 22, which can, to a certain extent, prevent the unsolidified coating material from entering the area where the discharge pipe 27 inlet is located, making it easier for the coating material to rotate with the pot body 21 and be dried by hot air; during counterclockwise rotation, it falls on the side of the pot body 21 away from the cover 22, which facilitates material discharge.

[0035] Reference Figure 3As shown, to facilitate material discharge, a shaped funnel 2b is inclined downwards at the lower part of the cap 22. One end of the discharge pipe 27 is connected to the discharge end of the shaped funnel 2b. A gate 2c is provided at the inlet end of the shaped funnel 2b. The gate 2c can slide on the cap 22. A drive arm 2d is provided on the gate 2c. The outward end of the drive arm 2d moves through the sliding groove hole 2f of the cap 22. A telescopic cylinder 2e is provided on the outer side of the cap 22. The telescopic end of the telescopic cylinder 2e is connected to the outward end of the drive arm 2d. The gate 2c always blocks the sliding groove hole 2f. The gate 2c is flush with the inner wall of the cap 22, which helps to reduce the adhesion of undried syrup. In fact, in the above embodiments, the irregular horn bucket 2b can be directly equipped with a butterfly valve structure or other valve body structure, which can facilitate installation. However, since unsolidified coating material is prone to accumulate at the inlet of the irregular horn bucket 2b, this application does not adopt such a structural design.

[0036] In the above-described improved embodiment, in order to restrict the gate 2c, guide blocks are provided on both sides of the inner side of the cover 22 located at the sliding groove hole 2f. The two guide blocks can restrict the two sides of the gate 2c respectively. The cross-section of the guide block is L-shaped, which is beneficial to restrict the side of the gate 2c, thereby realizing the guiding function of the gate 2c.

[0037] Reference Figure 3 As shown, to facilitate the sealing between the lid 22 and the pot body 21, a sealing edge 2g protrudes outward from the outer periphery of the inner side of the lid 22. The sealing edge 2g is fitted onto the outer periphery of the pot body 21 on the side located at the opening 23. A sealing ring is provided between the inner side of the sealing edge 2g and the outer wall of the pot body 21. In addition, an annular groove is provided on the outer wall of the pot body 21, wherein the annular groove mates with the sealing ring, thereby improving the sealing fit.

[0038] Reference Figure 1 and Figure 2 As shown, the hot air conveying mechanism 30 includes an air inlet hood 31, a filter screen 32 disposed inside the air inlet hood 31, an air inlet pipe 33 communicating with the air inlet hood 31, and an air inlet fan 34 disposed on the air inlet pipe 33. The air outlet end of the air inlet pipe 33 is connected to the outward end of the feed pipe 25. An electric heating box 35 is disposed between the air inlet fan 34 and the feed pipe 25. The filter screen 32 is actually multi-layered to prevent impurities in the outside air from entering the pot body 21, ensuring the quality of the coating material. The electric heating box 35 contains a serpentine tube with heating wire wound around its outside. The two ends of the serpentine tube are connected to the air inlet fan 34 and the feed pipe 25, respectively.

[0039] Reference Figure 1As shown, since the supplied material is tablets or pills, the material supply mechanism 40 includes a material tank 41, a connecting pipe 42 connected to the material tank 41, and a weighing chamber 43 set on the connecting pipe 42. A weighing sensor is installed in the weighing chamber 43. A switch valve 44 is installed between the bottom of the weighing chamber 43 and the connecting pipe 42. The weighing sensor can control the opening and closing of the switch valve 44. The material tank 41 is mounted on the base 10 through the bracket 11. One end of the connecting pipe 42 is connected to the feed pipe 25 through a three-way connector. The material tank 41, the weighing chamber 43, and the connecting pipe 42 are all located above the feed pipe 25. The weighing system consisting of the weighing chamber 43, the weighing sensor, and the switching valve 44 is a conventional setup, which can be referenced from the structures in patents CN205411677U - a pharmaceutical sugar coating machine, CN201620111523.8 - a mixing and stirring device equipped with a weighing sensor, or CN201920668328.9 - a weighing device for a medicine dispensing machine. The applicant will not elaborate on these details here.

[0040] To facilitate syrup supply, the syrup supply mechanism 50 includes a syrup tank 51, a syrup pipe 52 disposed at the bottom of the syrup tank 51, and a metering pump 53 disposed on the connecting pipe 42. The syrup tank 51 is mounted on the base 10 via a bracket 11. One end of the syrup pipe 52 is connected to the feed pipe 25 via a tee connector in the area between the connecting pipe 42 and the feed pipe 25. The syrup tank 51, the metering pump 53, and the syrup pipe 52 are all located above the feed pipe 25.

[0041] In the above embodiment, a heater can be installed in the syrup tank 51 to keep the syrup in a melted state. Of course, in the actual production process, the syrup is normally liquid at room temperature, while hot air can dry and solidify the syrup.

[0042] In the above embodiment, the air intake fan 34 continuously blows air into the pot body 21 through the feed pipe 25, while the electric heating box 35 is opened and closed according to the actual start-up situation. For example, when the material tank 41 supplies material into the feed pipe 25 through the connecting pipe 42, the electric heating box 35 is closed. When the material tank 41 is supplying material, the syrup tank 51 also continuously supplies syrup into the feed pipe 25 through the syrup pipe 52. The material discharged from the connecting pipe 42 and the syrup delivered from the syrup pipe 52 are mixed by the air force and sent into the container formed by the pot body 21 and the cover 22. When the syrup and the material are blown together, they will mix, which is beneficial for coating the surface of the material with syrup. After a batch of materials is fed into the container formed by the pot body 21 and the lid 22, the heating box 35 is turned on. Under the action of hot air flow and the rotation of the pot body 21, the materials continuously rotate within the pot body 21, facilitating thorough mixing of the syrup and materials and ensuring that the syrup forms a complete sugar coating on the surface of the materials. With the continuous supply of hot air through the feed pipe 25, the syrup is gradually dried, and the sugar coating on the surface of the materials gradually solidifies. During the continuous rotation of the pot body 21, the syrup tank 51 can supply syrup multiple times to the feed pipe 25 through the syrup pipe 52. This helps ensure that a sugar coating forms on the surface of all materials, while increasing the thickness of the sugar coating to meet the preset requirements. This operation also prevents excessive syrup supply at one time, which could cause clumping within the pot body 21 and affect the quality of the subsequent products. Once the staff observes or the instruments detect that the sugar coating on the surface of the material inside the pot 21 has reached the required thickness, the pot 21 stops rotating. The telescopic cylinder 2e, through the drive arm 2d, moves the gate 2c onto the cover 22, opening the inlet of the shaped funnel 2b. At this point, the pot 21 reverses, allowing the sugar-coated material inside to be discharged through the discharge pipe 27 until it is completely discharged. After the sugar-coated material has been discharged, the telescopic cylinder 2e moves the gate 2c to close the shaped funnel 2b, and the coating process begins again.

[0043] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A coating device, characterized in that, include: Base; A sugar coating pan includes a pan body and a lid. The pan body is rotatably mounted on a base via a rotating shaft. A drive motor for driving the rotating shaft is provided on the base. An opening is provided on one side of the pan body. The lid is mounted on the base and can seal the opening. The lid can rotate relative to the pan body. A feed pipe and an exhaust pipe are connected to the lid. An openable and closable discharge pipe is provided at the bottom of the lid. A hot air conveying mechanism, the output end of which is connected to the outward end of the feed pipe; A material supply mechanism, the output end of which is connected to the feed pipe; The syrup supply mechanism has its output end connected to the feed pipe and located between the material supply mechanism and the cap.

2. The coating device according to claim 1, characterized in that, The material supply mechanism includes a material tank, a connecting pipe connected to the material tank, and a weighing chamber installed on the connecting pipe. A weighing sensor is installed in the weighing chamber, and a switch valve is installed between the bottom of the weighing chamber and the connecting pipe. The weighing sensor can control the opening and closing of the switch valve. The material tank is mounted on a base by a bracket. One end of the connecting pipe is connected to the feed pipe through a tee connector. The material tank, weighing chamber, and connecting pipe are all located above the feed pipe.

3. The coating device according to claim 1, characterized in that, The syrup supply mechanism includes a syrup tank, a syrup pipe disposed at the bottom of the syrup tank, and a metering pump disposed on a connecting pipe. The syrup tank is mounted on the base by a bracket. One end of the syrup pipe is connected to the feed pipe through a tee connector in the area between the connecting pipe and the feed pipe. The syrup tank, metering pump, and syrup pipe are all located above the feed pipe.

4. The coating device according to claim 1, characterized in that, The hot air conveying mechanism includes an air inlet hood, a filter screen installed inside the air inlet hood, an air inlet pipe connected to the air inlet hood, and an air inlet fan installed on the air inlet pipe. The air outlet end of the air inlet pipe is connected to the outward end of the feed pipe. An electric heating box is installed between the air inlet fan and the feed pipe.

5. A coating device according to any one of claims 1 to 4, characterized in that, The exhaust pipe is located in the middle of the cover, and the exhaust pipe protrudes from the cover towards the inside of the pot to form an exhaust mesh cylinder. Several exhaust holes are provided on the side wall of the exhaust mesh cylinder.

6. A coating device according to any one of claims 1 to 4, characterized in that, Several inclined baffles are provided on the inner wall of one side of the pot body.

7. A coating device according to any one of claims 1 to 4, characterized in that, The lower part of the cover is inclined downward with an irregularly shaped horn-shaped bucket. One end of the discharge pipe is connected to the discharge end of the irregularly shaped horn-shaped bucket. A gate is provided on the inlet end of the irregularly shaped horn-shaped bucket. The gate can slide on the cover. A drive arm is provided on the gate. The outward end of the drive arm moves through the sliding groove hole of the cover. A telescopic cylinder is provided on the outer side of the cover. The telescopic end of the telescopic cylinder is connected to the outward end of the drive arm. The gate always blocks the sliding groove hole.

8. A coating device according to claim 7, characterized in that, The inner side of the cover is provided with guide blocks on both sides of the sliding hole, and the two guide blocks can respectively restrict the two sides of the gate.

9. A coating device according to claim 1, characterized in that, A sealing edge is provided on the outer periphery of the inner side of the cover. The sealing edge is fitted onto the outer periphery of the pot body on the side where the opening is located. A sealing ring is provided between the inner side of the sealing edge and the outer wall of the pot body.

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