A wet granulation apparatus

Abstract

This utility model relates to a wet granulation device, belonging to the technical field of granulation equipment. It includes a workbench, a granulation pot, a pot lid, a stirring mechanism, a granulation mechanism, a discharge mechanism, and a granulation setter. The granulation setter includes a granulation cylinder, a granulation conical screen cylinder, a granulation vertical shaft, a granulation horizontal shaft, a granulation knife, a feeding cone, and a discharge pipe. The lower end of the feeding cone is provided with a connecting elbow, which has multiple vent holes. A base plate is fixed to the bottom of the granulation conical screen cylinder, and multiple discharge holes are evenly distributed on the base plate. A material spillage protection plate is provided below the discharge holes. This utility model, by providing multiple vent holes at the bend of the connecting elbow of the feeding cone, can balance the air pressure inside the feeding cone, effectively avoiding the problem of poor material discharge caused by negative pressure, and improving discharge efficiency. It prevents the granulation conical screen cylinder from rotating with the granulation vertical shaft and granulation knife during high-speed operation, ensuring the granulation effect. It also prevents material from directly entering the seal of the granulation vertical shaft, affecting the service life of the seal.

Description

Technical Field

[0001] This utility model relates to a wet granulation device, belonging to the technical field of granulation equipment. Background Technology

[0002] Wet granulation is a process that mixes raw material powder with a binder and forms particles of a certain size through stirring and granulation. It is widely used in the pharmaceutical and food processing industries. Existing wet granulation equipment typically includes a granulation pot, a stirring mechanism, a granulation mechanism, and a discharge mechanism. The discharge mechanism is connected to a sizing mechanism to sizing the granulated material, making the particle size more uniform.

[0003] However, the sizing mechanism of the existing wet granulation equipment has many shortcomings: First, when the granulated material is discharged through the feeding cone, negative pressure is easily generated inside the feeding cone, which leads to poor material discharge and affects the discharge efficiency; Second, the installation and fixing of the sizing cone screen is not firm enough, and it is easy to rotate during long-term high-speed operation, affecting the sizing effect; Third, during the sizing process, the material at the bottom of the sizing cone screen can easily enter the sealing element of the sizing vertical shaft directly after falling, affecting the service life of the sealing element. Utility Model Content

[0004] This invention provides a wet granulation apparatus to solve the problems existing in the background art.

[0005] This utility model relates to a wet granulation device, including a workbench, a granulation pot, and a pot lid. The granulation pot is equipped with a stirring mechanism, a granulation mechanism, and a discharge mechanism. The discharge port of the discharge mechanism is connected to a granulating mechanism, which includes a granulating cylinder, a granulating conical screen cylinder, a granulating vertical shaft, a granulating horizontal shaft, and a granulating knife. A feeding cone is fixed at the bottom of the granulating cylinder, and a discharge pipe is connected to the outlet of the feeding cone. A connecting elbow is provided at the lower end of the feeding cone, and multiple vent holes are provided at the top of the bend of the connecting elbow. A base plate is fixed at the bottom of the granulating conical screen cylinder, and multiple discharge holes are evenly provided on the base plate. A conical discharge protection plate is fixed on the vertical shaft of the granulation cylinder below the discharge holes. A limiting clamping flange is fixed at the top of the granulating conical screen cylinder, and a connecting flange is provided at the top of the granulating cylinder. A connecting recess is provided at the top of the inner hole of the connecting flange to cooperate with the limiting clamping flange. A limiting pin is fixed on the connecting recess, and a limiting hole is provided on the limiting clamping flange to cooperate with the limiting pin.

[0006] As a preferred embodiment, the discharge port of the discharge mechanism is connected to a guide cone. The bottom of the guide cone is provided with a fixed flange that cooperates with the connecting flange. The fixed flange and the connecting flange are connected and fixed by bolts to facilitate material guidance.

[0007] As a preferred embodiment, the bottom of the inner hole of the limiting and pressing flange is provided with a fixed cone 1 that mates with the outer wall of the top of the granulating cone screen cylinder, and the outer wall of the top of the chassis is provided with a fixed cone 2 that mates with the inner wall of the bottom of the granulating cone screen cylinder. By setting the fixed cone 1 and the fixed cone 2, the granulating cone screen cylinder can be quickly connected to the chassis and the limiting and pressing flange, which facilitates subsequent welding and fixing. The inner hole of the limiting and pressing flange is conical, and the hole wall of the limiting and pressing flange is flush with the inner wall of the top of the granulating cone screen cylinder, which prevents the material from accumulating at the connection between the limiting and pressing flange and the granulating cone screen cylinder, and ensures a smooth granulation process.

[0008] As a preferred embodiment, a support cylinder is fixed to the outer wall of the pelletizing cylinder. The support cylinder is fixedly connected to the pelletizing machine housing, which houses a pelletizing motor connected to the pelletizing horizontal shaft. A support arm is fixedly connected to the pelletizing machine housing, and support sleeves are fixed at both the top and bottom of the support arm. Support shafts are connected to the support sleeves and fixed to the worktable. Through the cooperation of the support arm, support sleeves, and support shaft, a rotatable connection and support for the pelletizing mechanism is achieved. During pelleting, the pelletizing cylinder can be rotated to a position below the guide cone for connection and fixation. When not in use, the pelletizing cylinder can be rotated to a position away from the guide cone for easy cleaning.

[0009] As a preferred embodiment, an adhesive inlet pipe is fixed to the top of the pot lid. Above the adhesive inlet pipe are a valve and a feed hopper. Both ends of the valve are connected to the adhesive inlet pipe and the feed hopper via connector one. The top of the guide cone is connected to the discharge port of the discharge mechanism via connector two. The discharge cone is connected to the granulation cylinder and the discharge pipe via connector three. This facilitates control over the amount and speed of adhesive addition, and also facilitates the disassembly and maintenance of the feed hopper and valve.

[0010] As a preferred embodiment, connector one, connector two, and connector three all include connecting flanges disposed on the two components to be connected at the connection point. A clamp is provided on the outer side of the connecting flange, and a tapered clamping groove is provided in the inner hole of the clamp. The outer side wall of the connecting flange is tapered. A sealing gasket is provided between the mating connecting flanges. One of the mating connecting flanges has a dovetail-shaped anti-detachment ring groove, and the sealing gasket has an anti-detachment boss that mates with the anti-detachment ring groove. The tapered clamping groove of the clamp, in conjunction with the tapered outer side wall of the connecting flange, generates a uniform clamping force on the connecting flange, improving the connection sealing performance. The dovetail-shaped anti-detachment ring groove on one of the mating connecting flanges and the anti-detachment boss on the sealing gasket, which mates with the anti-detachment ring groove, prevent the sealing gasket from falling off when not in use.

[0011] As a preferred embodiment, the top of the pot lid is fixed with an observation port, and a sealing cap is threaded onto the observation port. The sealing cap has an observation hole in the center, and a support recess is located at the top of the observation port. A lens is supported above the support recess, and a cleaning shaft is located at the center mounting hole of the lens. A cleaning scraper is fixed to the bottom of the cleaning shaft, and a flashlight holder is fixed to the side wall of the observation hole, with its bottom in contact with the lens. By rotating the cleaning shaft, the cleaning scraper wipes the inside of the lens, preventing material from contaminating the lens and affecting the clarity of observation. This also facilitates the placement of a flashlight, providing illumination for observing the inside of the granulation pot, and is especially suitable for working environments with low light.

[0012] As a preferred embodiment, a limit ring is fixed on the middle outer wall of the cleaning shaft to restrict the vertical movement of the cleaning shaft and ensure the fit between the cleaning scraper and the lens; a clamping nut is provided at the bottom of the cleaning shaft to fix the cleaning scraper on the cleaning shaft and prevent the cleaning scraper from loosening during the cleaning process; a bending handle is provided at the top of the cleaning shaft to facilitate the operator to rotate the cleaning shaft; a sealing ring groove is provided on the support recess, and a sealing ring is provided in the sealing ring groove; an installation protrusion is provided on the side wall of the observation hole, and an arc-shaped fixing groove is provided on the outer wall of the installation protrusion to match the outer wall of the flashlight placement tube, so that the flashlight placement tube is more firmly fixed and prevents it from falling off during the operation of the device.

[0013] This utility model has the following beneficial effects:

[0014] By setting multiple vents at the bend of the feeding cone, the air pressure inside the feeding cone can be balanced, effectively avoiding the problem of poor material feeding caused by negative pressure and improving the discharge efficiency.

[0015] The granulation cone screen cylinder achieves rapid positioning and secure fixation through the cooperation of limiting clamping flanges, connecting recesses, and limiting pins. This prevents the granulation cone screen cylinder from rotating along with the granulation vertical shaft and granulation blades during high-speed operation, ensuring the granulation effect. The material discharge protection disc can throw the material discharged from the bottom of the granulation cone screen cylinder to the outside, preventing the material from directly entering the sealing components of the granulation vertical shaft and affecting the service life of the sealing components. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 for Figure 1 Partial structural diagram Figure 1 ;

[0018] Figure 3 for Figure 1 Partial structural diagram Figure 2 ;

[0019] Figure 4 This is a side view of the granulation mechanism.

[0020] Figure 5 for Figure 4 Partial structural diagram Figure 1 ;

[0021] Figure 6 for Figure 4 Partial structural diagram Figure 2 ;

[0022] Figure 7 A schematic diagram of the top structure of the closed cover;

[0023] In the diagram: 1. Workbench; 2. Granulation mechanism; 3. Mixing mechanism; 4. Discharge mechanism; 5. Granulation pot; 6. Pot lid; 7. Feed hopper; 8. Clamp; 9. Lens; 10. Sealing cover; 11. Guide cone; 12. Granulating cylinder; 13. Granulating cone screen; 14. Granulating vertical shaft; 15. Discharge cone; 16. Support arm; 17. Granulating machine housing; 18. Limiting clamping flange; 19. Granulating knife; 20. Limiting pin; 21. Breathing hole; 22. Material throwing protection disc; 23. Bending handle; 24. Cleaning scraper; 25. Flashlight holder. Detailed Implementation

[0024] The present invention will be further described below with reference to the embodiments.

[0025] Example 1, as Figures 1 to 7As shown, this utility model is a wet granulation device, including a workbench 1, a granulation pot 5, and a pot lid 6. A tilting arm is fixed to the pot lid 6 and hinged to the top of the granulation pot 5. A lid-opening cylinder is hinged to the top of the tilting arm, and the bottom of the lid-opening cylinder is hinged to the workbench 1. The granulation pot 5 is equipped with a stirring mechanism 3, a granulation mechanism 2, and a discharge mechanism 4. The discharge port of the discharge mechanism 4 is connected to a granulating mechanism, which includes a granulating cylinder 12, a granulating conical screen cylinder 13, a granulating vertical shaft 14, a granulating horizontal shaft, and a granulating knife 19. A feeding cone 15 is fixed to the bottom of the granulating cylinder 12, and a discharge pipe is connected to the outlet of the feeding cone 15. The lower end of the feeding cone 15 is provided with a connecting elbow, and the top of the bend of the connecting elbow is provided with multiple vent holes 21. The bottom of the granulating cone screen cylinder 13 is fixed with a base plate, and multiple discharge holes are evenly provided on the base plate. Below the discharge holes is a conical material throwing protection plate 22 fixed on the granulating vertical shaft 14. The top of the granulating cone screen cylinder 13 is fixed with a limiting clamping flange 18. The top of the granulating cylinder 12 is provided with a connecting flange. The top of the inner hole of the connecting flange is provided with a connecting recess that mates with the limiting clamping flange 18. A limiting pin 20 is fixed on the connecting recess. The limiting clamping flange 18 is provided with a limiting hole that mates with the limiting pin 20. The stirring mechanism 3 mainly includes a stirring paddle, a stirring shaft, and a stirring motor that drives the stirring shaft to rotate. The granulation mechanism 2 mainly includes a shredder, a shredding and granulation shaft, and a granulation motor that drives the shredding and granulation shaft to rotate. The discharge mechanism 4 is a pneumatic discharge valve. The stirring mechanism 3, the granulation mechanism 2, and the discharge mechanism 4 are all mature existing technologies and will not be described in detail here. The discharge pipe is connected to the negative pressure suction feed hose of the fluidized bed dryer.

[0026] During operation, the raw material powder is added into the granulation pot 5, the pot lid 6 is closed, the binder is added, and the stirring mechanism 3 is started. The stirring mechanism 3 mixes the raw material powder and the binder thoroughly. Then the granulation mechanism 2 is started to form the mixed material into granules.

[0027] After granulation, the discharge mechanism 4 is opened, and the material enters the granulation cone screen cylinder 13 through the discharge mechanism 4. The granulation motor is started, and the granulation motor drives the granulation horizontal shaft to rotate. Then, through a pair of bevel gears, the granulation vertical shaft 14 and the granulation knife 19 are driven to rotate. The granulation knife 19 cooperates with the granulation cone screen cylinder 13 to granulate the material. The granulated material is discharged through the discharge hole on the chassis and the screen hole of the granulation cone screen cylinder 13. The material discharged from the bottom is thrown to the outside by the throwing protection plate 22 to prevent it from falling directly to the seal. Then the material falls into the feeding cone hopper 15. The vent 21 balances the air pressure inside the feeding cone hopper 15. The material is discharged through the connecting elbow and the discharge pipe.

[0028] In Example 2, based on Example 1, the discharge port of the discharge mechanism 4 is connected to a guide cone 11. The bottom of the guide cone 11 is provided with a fixed flange that cooperates with the connecting flange. The fixed flange and the connecting flange are fixedly connected by bolts.

[0029] The bottom of the inner hole of the limiting and clamping flange 18 is provided with a fixed cone 1 that mates with the outer side wall of the top of the whole-particle conical sieve cylinder 13. The outer side wall of the top of the chassis is provided with a fixed cone 2 that mates with the inner side wall of the bottom of the whole-particle conical sieve cylinder 13. The inner hole of the limiting and clamping flange 18 is conical, and the wall of the inner hole of the limiting and clamping flange 18 is flush with the inner wall of the top of the whole-particle conical sieve cylinder 13. During welding of the whole-particle conical sieve cylinder 13, the upper end of the whole-particle conical sieve cylinder 13 is inserted into the fixed cone 1, and the lower end is inserted into the fixed cone 2, and then welded in place. O-rings are provided on both the upper and lower sides of the limiting and clamping flange 18 inside the limiting pin 20.

[0030] A support cylinder is fixed to the outer wall of the granulating cylinder 12. The support cylinder is fixedly connected to the granulating machine housing 17. The granulating machine housing 17 houses a granulating motor connected to the granulating horizontal shaft. The granulating machine housing 17 is fixedly connected to a support arm 16. Support sleeves are fixed at both the top and bottom of the support arm 16. Support shafts are connected to the support sleeves and are fixed to the worktable 1. A T-shaped mounting housing is located below the chassis. The granulating vertical shaft 14 and the granulating horizontal shaft are rotatably mounted in the mounting housing through bearing covers and bearing pressure covers. The granulating vertical shaft 14 and the granulating horizontal shaft are driven by a pair of bevel gears. A driven pulley is connected to the outer end of the granulating horizontal shaft. The driven pulley is connected to a driving pulley through a belt. The driving pulley is fixedly connected to the granulating motor. A mounting sleeve is fitted onto the upper end of the granulating vertical shaft 14, and the granulating knife 19 is mounted on the mounting sleeve. The lower end of the mounting sleeve passes through the chassis to press the material discharge protection plate 22. A clamping nut is provided at the top of the granulating vertical shaft 14 to press the mounting sleeve. During operation, the granulating machine housing 17 and the granulating cylinder 12 are rotated around the support shaft, so that the granulating cylinder 12 rotates to below the discharge port of the discharge mechanism 4. Then, the discharge port of the discharge mechanism 4 and the granulating cylinder 12 are connected by the guide cone 11. When cleaning is required after operation, the connecting bolts between the guide cone 11 and the granulating cylinder 12 are removed, the guide cone 11 is taken off, and then the granulating machine housing 17 and the granulating cylinder 12 are rotated around the support shaft, so that the granulating cylinder 12 is away from the discharge port of the discharge mechanism 4. Then, the granulating knife 19 and the granulating cone screen 13 can be disassembled for cleaning.

[0031] An adhesive inlet pipe is fixed to the top of the pot lid 6. Above the adhesive inlet pipe are a valve and a feed hopper 7. Both ends of the valve are connected to the adhesive inlet pipe and the feed hopper 7 via connector one. The top of the guide cone 11 is connected to the discharge port of the discharge mechanism 4 via connector two. The discharge cone 15 is connected to the granulation cylinder 12 and the discharge pipe via connector three. After the raw material powder is added to the granulation pot 5 and the pot lid 6 is closed, the adhesive is added from the top of the feed hopper 7. Then the valve is opened, and the adhesive enters the granulation pot 5. After the adhesive is added, the valve is closed.

[0032] Connector 1, Connector 2, and Connector 3 all include connecting flanges set on the two components to be connected at the connection point. A clamp 8 is provided on the outside of the connecting flange. A tapered pressing groove is provided in the inner hole of the clamp 8. The outer wall of the connecting flange is tapered. A sealing gasket is provided between the mating connecting flanges. One of the mating connecting flanges is provided with a dovetail-shaped anti-detachment ring groove. An anti-detachment boss that mates with the anti-detachment ring groove is provided on the sealing gasket. A hollow cavity is provided inside the anti-detachment boss.

[0033] An observation port is fixed to the top of the pot lid 6, and a sealing cap 10 is threaded onto the observation port. An observation hole is provided in the center of the sealing cap 10. A support recess is provided at the top of the observation port, and a lens 9 is supported above the support recess. A cleaning shaft is provided at the center mounting hole of the lens 9, and a cleaning scraper 24 is fixed to the bottom of the cleaning shaft. A flashlight holder 25 is fixed to the side wall of the observation hole, and the bottom of the flashlight holder 25 contacts the lens 9. An O-ring is provided at the mating point between the cleaning shaft and the mounting hole. The cleaning scraper 24 is a rubber or nylon plate.

[0034] A limit ring is fixed on the middle outer wall of the cleaning shaft. A clamping nut is provided at the bottom of the cleaning shaft. A bending handle 23 is provided at the top of the cleaning shaft. A sealing ring groove is provided on the support recess, and a sealing ring is provided in the sealing ring groove. An installation protrusion is provided on the side wall of the observation hole. An arc-shaped fixing groove that mates with the outer wall of the flashlight placement tube 25 is provided on the outer wall of the installation protrusion. When observing the condition inside the granulation pot 5, the bending handle 23 can be rotated to rotate the cleaning scraper 24 to clean the bottom of the lens 9. Then, the flashlight is placed in the flashlight placement tube 25 and turned on. The light from the flashlight can shine through the lens 9 into the interior of the granulation pot 5 to provide illumination for observation. During installation, the lower end of the cleaning shaft is passed through the installation hole and then through the cleaning scraper 24. The clamping nut is then used to tighten the cleaning scraper 24. The lens 9 is then placed on the support recess, and the sealing cover 10 is screwed on. The sealing cover 10 tightens the lens 9.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0036] In the description of this utility model, the terms "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not require that this utility model must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A wet granulation apparatus, comprising a workbench (1), a granulation pot (5), and a pot lid (6), wherein the granulation pot (5) is provided with a stirring mechanism (3), a granulation mechanism (2), and a discharge mechanism (4), wherein the discharge port of the discharge mechanism (4) is connected to a granulation mechanism, the granulation mechanism comprising a granulation cylinder (12), a granulation conical screen cylinder (13), a granulation vertical shaft (14), a granulation horizontal shaft, and a granulation knife (19), wherein a feeding cone (15) is fixed at the bottom of the granulation cylinder (12), and a discharge pipe is connected to the outlet of the feeding cone (15), characterized in that: The lower end of the feeding cone (15) is provided with a connecting elbow. The top of the bend of the connecting elbow is provided with multiple breathing holes (21). The bottom of the whole grain cone screen (13) is fixed with a base plate. Multiple discharge holes are evenly provided on the base plate. Below the discharge holes is a cone-shaped material throwing protection plate (22) fixed on the whole grain vertical shaft (14). The top of the whole grain cone screen (13) is fixed with a limiting pressing flange (18). The top of the whole grain cylinder (12) is provided with a connecting flange. The top of the inner hole of the connecting flange is provided with a connecting recess that cooperates with the limiting pressing flange (18). A limiting pin (20) is fixed on the connecting recess. The limiting pressing flange (18) is provided with a limiting hole that cooperates with the limiting pin (20).

2. A wet granulation apparatus according to claim 1, wherein: The discharge port of the discharge mechanism (4) is connected to a guide cone (11). The bottom of the guide cone (11) is provided with a fixed flange that cooperates with the connecting flange. The fixed flange and the connecting flange are fixedly connected by bolts.

3. A wet granulation apparatus as claimed in claim 1, wherein: The bottom of the inner hole of the limiting and pressing flange (18) is provided with a fixed cone 1 that cooperates with the outer side wall of the top of the whole grain cone sieve (13). The outer side wall of the top of the chassis is provided with a fixed cone 2 that cooperates with the inner side wall of the bottom of the whole grain cone sieve (13). The inner hole of the limiting and pressing flange (18) is conical, and the hole wall of the inner hole of the limiting and pressing flange (18) is flush with the inner wall of the top of the whole grain cone sieve (13).

4. A wet granulation apparatus as claimed in claim 1, wherein: A support cylinder is fixed on the outer wall of the granulation cylinder (12). The support cylinder is fixedly connected to the granulation machine box (17). The granulation machine box (17) is equipped with a granulation motor connected to the granulation horizontal shaft. The granulation machine box (17) is fixedly connected to a support arm (16). Support sleeves are fixed on the upper and lower parts of the support arm (16). The support sleeves are connected to a support shaft. The support shaft is fixed on the worktable (1).

5. A wet granulation apparatus according to claim 2, wherein: The top of the pot lid (6) is fixed with an adhesive inlet pipe. A valve and a feed hopper (7) are provided above the adhesive inlet pipe. Both ends of the valve are connected to the adhesive inlet pipe and the feed hopper (7) through connector one. The top of the guide cone (11) is connected to the discharge port of the discharge mechanism (4) through connector two. The discharge cone (15) is connected to the granulation cylinder (12) and the discharge pipe through connector three.

6. A wet granulation apparatus according to claim 5, wherein: Connector 1, connector 2 and connector 3 all include connecting flanges set on the two parts to be connected at the connection point. The outer side of the connecting flange is provided with a clamp (8). The inner hole of the clamp (8) is provided with a conical pressing groove. The outer side wall of the connecting flange is conical. A sealing gasket is provided between the mating connecting flanges. One of the mating connecting flanges is provided with a dovetail-shaped anti-detachment ring groove. The sealing gasket is provided with an anti-detachment boss that mates with the anti-detachment ring groove.

7. A wet granulation apparatus as claimed in claim 1, wherein: The top of the pot lid (6) is fixed with an observation port, and a sealing cap (10) is threaded onto the observation port. An observation hole is provided in the middle of the sealing cap (10). A support recess is provided on the top of the observation port. A lens (9) is supported above the support recess. A cleaning shaft is provided at the middle mounting hole of the lens (9). A cleaning scraper (24) is fixed at the bottom of the cleaning shaft. A flashlight holder (25) is fixed on the side wall of the observation hole. The bottom of the flashlight holder (25) is in contact with the lens (9).

8. A wet granulation apparatus according to claim 7, characterised in that: A limit ring is fixed on the middle outer wall of the cleaning shaft, a clamping nut is provided at the bottom of the cleaning shaft, a bending handle (23) is provided at the top of the cleaning shaft, a sealing ring groove is provided on the support recess, a sealing ring is provided in the sealing ring groove, an installation protrusion is provided on the side wall of the observation hole, and an arc-shaped fixing groove that matches the outer wall of the flashlight placement tube (25) is provided on the outer wall of the installation protrusion.

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