Double-cone rotary drying device facilitating feeding

Abstract

The utility model provides a kind of double-cone rotary drying device facilitating feeding, including the cover plate of being installed at the feeding opening of double-cone rotary drying device, the cover plate is fixed with feed pipe, the feed pipe is communicated with feeding opening, valve for controlling the closure of feed pipe is equipped on feed pipe, the end of feed pipe away from cover plate is equipped with quick coupling mechanism for being connected with conveying pipeline.The utility model reduces the degree of manual participation when feeding, without carrying out cover plate opening, manual feeding and other steps, improves the feeding efficiency;And without staff climbing feeding during feeding process, the generation of dust in workshop is also greatly reduced by vacuum feeding mode, improves the safety of feeding, ensures the cleanness of workshop environment.

Description

Technical Field

[0001] This utility model relates to the technical field of drying equipment for pharmaceutical processing, specifically to a double-cone rotary drying device that facilitates material feeding. Background Technology

[0002] The double-cone rotary drying unit, also known as a double-cone rotary vacuum dryer, is a widely used piece of equipment in the production of active pharmaceutical ingredients (APIs). Its operation involves using a vacuum pump to create a vacuum inside the double-cone rotary tank. While the tank is under vacuum, steam or hot water is introduced into the jacket for heating. The heat comes into contact with the wet material through the inner wall of the tank, causing the wet material to absorb heat and evaporate water vapor. This water vapor is then removed by the vacuum pump through the vacuum exhaust pipe. Because the tank is under vacuum and the rotation of the tank causes the material to constantly tumble and rotate, the drying speed is accelerated, drying efficiency is improved, and uniform drying is achieved. However, existing double-cone rotary drying units generally use a manual feeding method with the lid open. This method has low feeding efficiency, generates a lot of dust during feeding, which can easily cause environmental pollution and may be inhaled by workers, affecting their health and safety. Furthermore, the feeding port needs to be positioned high to facilitate material entry into the rotary tank, requiring workers to climb, further increasing the complexity of the feeding process and posing safety risks. Utility Model Content

[0003] To address the problems in the background art and improve the convenience, efficiency, and safety of feeding materials into the rotary tank of the double cone rotary dryer, this utility model proposes a double cone rotary dryer that facilitates feeding. The device includes a cover plate installed at the feeding port of the double cone rotary dryer. A feed pipe is fixed to the cover plate and communicates with the feeding port. A valve is provided on the feed pipe to control its opening and closing. A quick-connect mechanism for connecting to a conveying pipeline is provided at the end of the feed pipe furthest from the cover plate. Preferably, the quick-connect mechanism includes a plug tube and a connecting cavity located at the end of the feed tube away from the cover plate, and a positioning ring plate is slidably connected to the end of the connecting cavity near the feed tube by a spring; An elastic block is movably provided on the inner wall of the other end of the connecting cavity. The side of the elastic block away from the wall of the connecting cavity is an inclined surface, and the end of the inclined surface away from the feed pipe is inclined towards the side close to the wall of the connecting cavity. The insertion tube is provided with a card interface on its periphery corresponding to the number and position of the elastic card blocks. One end of the insertion tube is connected to the material conveying pipe. When the insertion tube is connected to the connecting cavity, the end of the insertion tube away from the material conveying pipe is inserted into the connecting cavity. The elastic card blocks are in a natural state and located in the card interface. The spring is in a compressed state, and the positioning ring plate abuts against the end face of the insertion tube near the feed pipe.

[0004] Preferably, the inner diameter of the connecting cavity is larger than the inner diameter of the feed pipe, and the outer diameter of the insertion pipe is the same as the inner diameter of the connecting cavity.

[0005] Preferably, one end of the insertion tube is fixed with a connecting tube for connecting to the material conveying pipe, and the other end of the insertion tube is fixed with an inner tube, the outer diameter of the inner tube being the same as the inner diameter of the feed pipe; when the insertion tube is connected to the connecting cavity, the inner tube is inserted into the feed pipe.

[0006] Preferably, the feeding port of the double cone rotary drying device is provided with a sealing mechanism, the sealing mechanism including a mounting ring plate and an annular air bladder, the annular air bladder is fixed to the inner side of the mounting ring plate, the outer wall of the mounting ring plate is in contact with the inner wall of the feeding port, and the mounting ring plate is fixedly connected to the feeding port; A rubber layer is provided on one side of the cover plate. When the cover plate closes the feed port, the rubber layer is located inside the annular airbag and squeezes the annular airbag. The outer diameter of the rubber layer is larger than the inner diameter of the annular airbag. A supporting ring plate is fixed at the end of the mounting ring plate away from the cover plate. The annular airbag is located on the side of the supporting ring plate close to the cover plate.

[0007] Preferably, the cover plate has multiple mounting holes along its outer periphery. The outer side of the feeding port of the double cone rotary drying device is fixed with fixing bolts corresponding to the number and position of the mounting holes. When the cover plate closes the feeding port, the fixing bolts pass through the mounting holes, and the ends of the fixing bolts extend to the side of the cover plate away from the feeding port and are threaded with fixing nuts.

[0008] Preferably, a hinge plate is fixed on one side of the cover plate, and two ear plates are fixed at intervals on the outer side of the feed port of the double cone rotary drying device. The hinge plate is located between the two ear plates, and a long groove is provided on the ear plate along the axial direction of the feed port. A connecting shaft is fixed on the hinge plate, and the two ends of the connecting shaft are respectively slidably disposed in the long grooves of the two ear plates.

[0009] The beneficial effects of this utility model are as follows: This invention features a feed pipe with a valve, and the feed pipe has a quick-connect mechanism for connecting to a conveying pipe. The end of the conveying pipe furthest from the feed pipe is connected to the material source. During loading, the inside of the rotary tank is first evacuated, and the feed port is positioned at a low position. The conveying pipe and feed pipe are then connected. After evacuation is complete and the conveying pipe and feed pipe are connected, the valve is opened. At this time, the material gradually enters the rotary tank through the conveying pipe under vacuum, while the rotary tank rotates until the feed port is at a high position. Material continues to flow in until loading is complete. This invention reduces manual intervention during loading, eliminating the need for opening the cover and manual loading, thus improving loading efficiency. Furthermore, the vacuum loading method eliminates the need for workers to climb to load materials, significantly reducing dust generation in the workshop, improving loading safety, and ensuring a clean workshop environment. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 for Figure 1 Enlarged view of the structure at point A in the middle; Figure 3 This is a schematic diagram of the cover plate structure of this utility model. Figure 1 ; Figure 4 This is a schematic diagram of the cover plate structure of this utility model. Figure 2 ; Figure 5 This is a schematic diagram of the insertion tube structure of this utility model; Figure 6 This is a schematic diagram showing the connection relationship between the insertion tube and the connecting cavity of this utility model; Figure 7 This is a schematic diagram of the mounting ring plate and annular airbag structure of this utility model.

[0011] The following are the labeling elements in the diagram: 1. Rotary tank body; 2. Insertion pipe; 3. Cover plate; 4. Feed pipe; 5. Connecting cavity; 6. Valve; 7. Mounting hole; 8. Connecting shaft; 9. Hinge plate; 10. Ear plate; 11. Long groove; 12. Fixing bolt; 13. Fixing nut; 14. Elastic locking block; 15. Positioning ring plate; 16. Positioning rod; 17. Positioning groove; 18. Spring; 19. Connecting pipe; 20. Inner pipe; 21. Mounting ring plate; 22. Annular airbag; 23. Supporting ring plate; 24. Rubber layer; 25. Clip interface; 26. Vacuum pump pipe. Detailed Implementation

[0012] To make this utility model clearer and more understandable, the technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the given embodiments are only one of the implementation methods and do not represent all embodiments.

[0013] In this article, terms such as "inner," "outer," "upper," and "lower" are established based on the positional relationships shown in the attached drawings. Depending on the attached drawings, the corresponding positional relationships may also change. Therefore, they should not be interpreted as an absolute limitation on the scope of protection.

[0014] Combined with appendix Figure 1 - Appendix Figure 7A double-cone rotary drying device for easy feeding includes a cover plate 3 installed at the feeding port of the double-cone rotary drying device. A feed pipe 4 is fixed on the cover plate 3 and communicates with the feeding port. A valve 6 is provided on the feed pipe 4 to control its opening and closing. A quick-connect mechanism for connecting to a conveying pipe is provided at the end of the feed pipe 4 away from the cover plate 3. The cover plate 3 is used to open or close the feeding port. The conveying pipe is used to transport materials. For example, the end of the conveying pipe away from the feed pipe 4 is connected to a storage tank containing the material to be dried.

[0015] Specifically, the quick-connect mechanism includes a plug tube 2 and a connecting cavity 5 located at the end of the feed tube 4 away from the cover plate 3. A positioning ring plate 15 is slidably connected to the end of the connecting cavity 5 near the feed tube 4 by a spring 18. The sliding direction of the positioning ring plate 15 is consistent with the axial direction of the connecting cavity 5. The inner wall of the other end of the connecting cavity 5 is provided with an elastic locking block 14. The side of the elastic locking block 14 away from the wall of the connecting cavity 5 is an inclined surface. The end of the inclined surface away from the feed pipe 4 is inclined towards the side close to the wall of the connecting cavity 5. The inclined surface facilitates the insertion of the insertion pipe 2 and restricts the insertion pipe 2 from moving away from the feed pipe 4. The direction of movement of the elastic locking block 14 is consistent with the radial direction of the connecting cavity 5. The insertion pipe 2 is provided with card interfaces 25 on its periphery, corresponding to the number and position of the elastic card blocks 14. One end of the insertion pipe 2 is connected to the material conveying pipe, so that the insertion pipe 2 and the material conveying pipe are integrated. When the insertion pipe 2 is connected to the connecting cavity 5, the end of the insertion pipe 2 away from the material conveying pipe is inserted into the connecting cavity 5. The elastic card blocks 14 are in a natural state and located in the card interfaces 25. The spring 18 is in a compressed state, and the positioning ring plate 15 abuts against the end face of the insertion pipe 2 near the feed pipe 4. At this time, there is a gap between the side of the positioning ring plate 15 away from the feed pipe 4 and the bottom wall of the connecting cavity 5 (the inner wall of the connecting cavity 5 near the feed pipe 4).

[0016] When connecting the conveying pipe and the feed pipe 4, simply insert the end of the connector 2 furthest from the conveying pipe into the connecting cavity 5. As the connector 2 is inserted, it pushes the elastic locking block 14 to retract, moving it closer to the wall of the connecting cavity 5. Once the elastic locking block 14 aligns with the locking interface 25 on the connector 2, the elastic locking block 14 loses its pressure and returns to its original position under elastic action, entering the locking interface 25. At this point, the locking interface 25 and the elastic locking block 14 cooperate, preventing the connector 2 from moving axially and disengaging from the connecting cavity 5. Simultaneously, the spring 18 is compressed, causing the positioning ring plate 15 to move closer to the connector 2, bringing it into contact with the connector 2. Through the elastic force of the spring 18 and the contact of the positioning ring plate 15, the connector 2 is supported, reducing the possibility of it moving closer to the feed pipe 4 under its own weight or vibration, thus improving the stability of the connection between the connector 2 and the connecting cavity 5.

[0017] When it is necessary to separate the conveying pipe from the feed pipe 4, push the insertion pipe 2 towards the feed pipe 4. The spring 18 continues to be compressed. At this time, the elastic locking block 14 is gradually pushed by the outer wall of the insertion pipe 2 and disengages from the locking interface 25. After the elastic locking block 14 disengages from the locking interface 25, rotate the insertion pipe 2 so that the locking interface 25 and the elastic locking block 14 are misaligned. The elastic locking block 14 and the locking interface 25 are no longer in corresponding positions. At this time, even if the insertion pipe 2 is moved axially, the elastic locking block 14 will not enter the locking interface 25 to perform the limiting function. Then, the insertion pipe 2 can be pulled out from the connecting cavity 5.

[0018] More specifically, the connection method between the material conveying pipe and the insertion pipe 2 can be threaded connection, welding or adhesive bonding, etc. The connection method between the material conveying pipe and the insertion pipe 2 adopts a conventional connection method, which can achieve a fixed connection between the two. The specific connection method will not be described in detail.

[0019] The movable connection method of the elastic block 14 can be as follows: a movable cavity is provided on the side wall of the connecting cavity 5, and the side of the elastic block 14 near the wall of the connecting cavity 5 is slidably connected to the movable cavity by a spring.

[0020] The bottom wall of the connecting cavity 5 is provided with a positioning groove 17. A positioning rod 16 is fixed on the side of the positioning ring plate 15 near the positioning groove 17. The positioning rod 16 is slidably disposed in the positioning groove 17. The spring 18 is sleeved on the outer wall of the positioning rod 16. One end of the spring 18 is fixedly connected to the positioning ring plate 15, and the other end of the spring 18 is fixedly connected to the bottom wall of the connecting cavity 5.

[0021] Specifically, the inner diameter of the connecting cavity 5 is larger than the inner diameter of the feed pipe 4, and the outer diameter of the insertion pipe 2 is the same as the inner diameter of the connecting cavity 5.

[0022] Specifically, one end of the insertion pipe 2 is fixed with a connecting pipe 19 for connecting to the conveying pipe, and the connecting pipe 19 is inserted into the conveying pipe. The other end of the insertion pipe 2 is fixed with an inner connecting pipe 20, the outer diameter of which is the same as the inner diameter of the feed pipe 4. When the insertion pipe 2 is connected to the connecting cavity 5, the inner connecting pipe 20 is inserted into the feed pipe 4. The connecting pipe 19 and the inner connecting pipe 20 improve the tightness of the connection between the insertion pipe 2 and the conveying pipe and the feed pipe 4.

[0023] Specifically, the feeding port of the double cone rotary drying device is provided with a sealing mechanism, which includes a mounting ring plate 21 and an annular air bag 22. The annular air bag 22 is fixed to the inner side of the mounting ring plate 21. The outer wall of the mounting ring plate 21 contacts the inner wall of the feeding port. The mounting ring plate 21 is fixedly connected to the feeding port. Specifically, the mounting ring plate 21 is welded to the feeding port. A rubber layer 24 is provided on one side of the cover plate 3. When the cover plate 3 closes the feed port, the rubber layer 24 is located inside the annular air bladder 22 and compresses the annular air bladder 22. The outer diameter of the rubber layer 24 is larger than the inner diameter of the annular air bladder 22. A supporting ring plate 23 is fixed to the end of the mounting ring plate 21 away from the cover plate 3. The annular air bladder 22 is located on the side of the supporting ring plate 23 closer to the cover plate 3. The rubber layer 24 compresses the annular air bladder 22, which can cause the annular air bladder 22 to expand and further fit with the cover plate 3 and the mounting ring plate 21, thus filling the gap between the cover plate 3 and the mounting ring plate 21 and improving the sealing performance of the cover plate 3 to the rotary tank 1.

[0024] Specifically, the cover plate 3 has multiple mounting holes 7 along its outer periphery. A fixing bolt 12, corresponding to the number and position of the mounting holes 7, is fixed to the outer side of the feeding port of the double-cone rotary drying device. When the cover plate 3 closes the feeding port, the fixing bolt 12 passes through the mounting holes 7, and the end of the fixing bolt 12 extends to the side of the cover plate 3 away from the feeding port and is threaded with a fixing nut 13. The cover plate 3 is fixed to the feeding port through the cooperation of the fixing bolt 12, the fixing nut 13, and the mounting holes 7.

[0025] Specifically, a hinge plate 9 is fixed to one side of the cover plate 3, and two ear plates 10 are fixed at intervals on the outer side of the feed port of the double cone rotary drying device. The hinge plate 9 is located between the two ear plates 10. An elongated groove 11 is provided on the ear plate 10 along the axial direction of the feed port. A connecting shaft 8 is fixed on the hinge plate 9, and both ends of the connecting shaft 8 are slidably disposed in the elongated groove 11 of the two ear plates 10. The cover plate 3 is hinged to the rotary tank 1, which facilitates the opening and closing of the cover plate 3. The elongated groove 11 cooperates with the connecting shaft 8, so that the cover plate 3 can rotate and move along the axial direction of the feed port at the same time, which facilitates the alignment of the cover plate 3 with the feed port, the mounting hole 7 and the fixing bolt 12.

[0026] Workflow: During drying, valve 6 is closed, and the rotary tank 1 is sealed with cover plate 3. During loading, a vacuum pump is first used to evacuate the interior of the rotary tank 1 (the vacuum pump is connected to the rotary tank 1 via vacuum pump connector 26; this is the standard structure of a double-cone rotary dryer), and the loading port is positioned at the low position, connecting the conveying pipe and feed pipe 4. After vacuuming is complete and the conveying pipe and feed pipe 4 are connected, valve 6 is opened. At this time, under vacuum, the material gradually enters the rotary tank 1 through the conveying pipe, while the rotary tank 1 rotates until the loading port is at the high position. Material continues to flow in until loading is complete.

[0027] Although embodiments of the present invention have been shown and described, those skilled in the art will be able to make various changes, modifications, substitutions and alterations to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double-cone rotary drying device for easy feeding, characterized in that: Includes a cover plate (3) installed at the feeding port of the double cone rotary dryer, a feed pipe (4) fixed on the cover plate (3), the feed pipe (4) being connected to the feeding port, a valve (6) for controlling the opening and closing of the feed pipe (4) on the feed pipe (4), and a quick-connect mechanism for connecting to the conveying pipeline at the end of the feed pipe (4) away from the cover plate (3).

2. The double-cone rotary drying device with easy feeding according to claim 1, characterized in that: The quick-connect mechanism includes a plug tube (2) and a connecting cavity (5) located at the end of the feed tube (4) away from the cover plate (3). A positioning ring plate (15) is slidably connected to the end of the connecting cavity (5) near the feed tube (4) by a spring (18). The inner wall of the other end of the connecting cavity (5) is provided with an elastic block (14). The side of the elastic block (14) away from the wall of the connecting cavity (5) is an inclined surface. The end of the inclined surface away from the feed pipe (4) is inclined towards the side close to the wall of the connecting cavity (5). The insertion pipe (2) is provided with a card interface (25) on its periphery corresponding to the number and position of the elastic card block (14). One end of the insertion pipe (2) is connected to the material conveying pipe. When the insertion pipe (2) is connected to the connecting cavity (5), the end of the insertion pipe (2) away from the material conveying pipe is inserted into the connecting cavity (5). The elastic card block (14) is in a natural state and located in the card interface (25). The spring (18) is in a compressed state, and the positioning ring plate (15) abuts against the end face of the insertion pipe (2) near the feed pipe (4).

3. The double-cone rotary drying device with easy feeding according to claim 2, characterized in that: The inner diameter of the connecting cavity (5) is larger than the inner diameter of the feed pipe (4), and the outer diameter of the insertion pipe (2) is the same as the inner diameter of the connecting cavity (5).

4. The double-cone rotary drying device for easy feeding according to claim 3, characterized in that: One end of the insertion pipe (2) is fixed with a connecting pipe (19) for connecting to the conveying pipe, and the other end of the insertion pipe (2) is fixed with an inner pipe (20). The outer diameter of the inner pipe (20) is the same as the inner diameter of the feed pipe (4). When the insertion pipe (2) is connected to the connecting cavity (5), the inner pipe (20) is inserted into the feed pipe (4).

5. The double-cone rotary drying device for easy feeding according to claim 1, characterized in that: The feeding port of the double cone rotary drying device is provided with a sealing mechanism. The sealing mechanism includes a mounting ring plate (21) and an annular air bag (22). The annular air bag (22) is fixed to the inner side of the mounting ring plate (21). The outer wall of the mounting ring plate (21) is in contact with the inner wall of the feeding port. The mounting ring plate (21) is fixedly connected to the feeding port. A rubber layer (24) is provided on one side of the cover plate (3). When the cover plate (3) closes the feed port, the rubber layer (24) is located inside the annular airbag (22) and squeezes the annular airbag (22). The outer diameter of the rubber layer (24) is larger than the inner diameter of the annular airbag (22). A supporting ring plate (23) is fixed at the end of the mounting ring plate (21) away from the cover plate (3). The annular airbag (22) is located on the side of the supporting ring plate (23) close to the cover plate (3).

6. The double-cone rotary drying device for easy feeding according to claim 1, characterized in that: The cover plate (3) has multiple mounting holes (7) along its outer periphery. The outer side of the feed port of the double cone rotary drying device is fixed with fixing bolts (12) corresponding to the number and position of the mounting holes (7). When the cover plate (3) closes the feed port, the fixing bolts (12) pass through the mounting holes (7). The end of the fixing bolts (12) extends to the side of the cover plate (3) away from the feed port and is threaded with a fixing nut (13).

7. A double-cone rotary drying device for easy feeding according to claim 6, characterized in that: A hinge plate (9) is fixed on one side of the cover plate (3). Two ear plates (10) are fixed at intervals on the outside of the feed port of the double cone rotary drying device. The hinge plate (9) is located between the two ear plates (10). A long groove (11) is provided on the ear plate (10) along the axial direction of the feed port. A connecting shaft (8) is fixed on the hinge plate (9). The two ends of the connecting shaft (8) are respectively slidably disposed in the long groove (11) of the two ear plates (10).

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