Drying machine for medical intermediate powder

Abstract

The utility model relates to the technical field of medical intermediate powder drying, and discloses a medical intermediate powder drying machine which comprises a drying cylinder, a heating seat is installed on the outer side wall of the drying cylinder, a rotating fan is fixed to the outer side wall of a connecting shaft, and a helical ribbon stirring shaft is arranged at the bottom end of a shaft body. And an observation window is mounted at one end of the top of the barrel cover. Through the arrangement of the first bevel gear, the second bevel gear, the connecting shaft, the rotating fan and other components, when the drying machine dries intermediate powder, the shaft body rotates to drive the helical ribbon stirring shaft below to stir and dry the intermediate powder; and the shaft body also drives a rotating fan mounted on the outer side wall of the connecting shaft to rotate in the feeding hopper under the assistance of the components, so that the intermediate powder is turned over, the intermediate powder uniformly enters the heating seat through the feeding hopper, the feeding efficiency of the drying machine is ensured, and blockage is not easily caused.

Description

Technical Field

[0001] The utility model relates to the technical field of pharmaceutical intermediate powder drying, in particular to a dryer for pharmaceutical intermediate powder. Background Technique

[0002] A pharmaceutical intermediate is a chemical product processed for use in the synthesis process of drugs. Compared with real drugs, these chemical products can be produced in ordinary chemical factories and are used to synthesize corresponding products after production. Pharmaceutical intermediate powder is a form of pharmaceutical intermediate. After this form is produced, it needs to be dried accordingly to avoid excessive moisture inside the powder from affecting the quality of the subsequent synthesized products.

[0003] For traditional dryers for pharmaceutical intermediate powder, when the intermediate powder to be dried is fed into the interior of the dryer through the feed inlet, if the humidity of the powder is too high, it will cause the powder to block at the feed inlet, affecting the feeding efficiency of the dryer. Therefore, we propose a dryer for pharmaceutical intermediate powder to improve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a dryer for pharmaceutical intermediate powder to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A dryer for pharmaceutical intermediate powder, including a drying cylinder, a heating seat is installed on the outer side wall of the drying cylinder, a blanking valve is arranged at the bottom end of the drying cylinder, a cylinder cover is installed at the top end of the drying cylinder, a vacuum pumping port is arranged on one side of the top end of the cylinder cover, and a filter screen is installed inside the vacuum pumping port. A feed hopper is installed on the other side of the top end of the cylinder cover. A reduction motor is arranged at the top end of the cylinder cover, and a shaft body is installed inside the reduction motor. A first bevel gear is installed on the outer side wall of the shaft body. A second bevel gear is meshed and arranged on one side of the first bevel gear. A connecting shaft is installed on one side of the second bevel gear, and one side of the connecting shaft is fixed to one side inside the feed hopper. A rotating fan is fixed on the outer side wall of the connecting shaft. A spiral ribbon stirring shaft is arranged at the bottom end of the shaft body. An observation window is installed at one end of the top of the cylinder cover.

[0006] Preferably, six groups of rotating fans are provided, and two groups of rotating fans are evenly distributed on the outer side wall of the connecting shaft.

[0007] Preferably, an installation groove is arranged at the bottom end inside the shaft body, an installation shaft is movably arranged inside the installation groove, and the bottom end of the installation shaft is fixed to the top end of the spiral ribbon stirring shaft. Fixed clamping rings are hinged and installed at the bottom ends on both sides of the shaft body. A fixing block is movably arranged inside the fixed clamping ring, and one side of the fixing block is fixed to the top ends on both sides of the spiral ribbon stirring shaft.

[0008] Preferably, the inner side wall of the installation groove is uniformly provided with threads, and the outer side wall of the installation shaft is uniformly provided with external threads, and a threaded connection is formed between the installation groove and the installation shaft.

[0009] Preferably, two groups of fixing snap rings are provided, and the fixing snap rings are symmetrically distributed about the central axis of the shaft body.

[0010] Preferably, the cross section of the fixing snap ring is larger than the cross section of the fixing block, and a clamping structure is formed between the fixing snap ring and the fixing block.

[0011] Preferably, a rotating rod is movably arranged at the top end inside the observation window, and a scraping rod is installed on one side of the bottom end of the rotating rod.

[0012] Preferably, the length of the scraping rod is equal to the inner radius of the observation window, and one end of the scraping rod fits against the top end inside the observation window.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The dryer for pharmaceutical intermediate powder not only enables the intermediate powder to enter the inside of the heating base evenly while being turned over, is not prone to blockage, and enables the replacement and maintenance of the spiral ribbon stirring shaft, but also enables the cleaning of the observation window, facilitating people to better observe the inside of the drying cylinder through the observation window;

[0014] (1) By providing components such as a first bevel gear, a second bevel gear, a connecting shaft, and a rotating fan, when the dryer dries the intermediate powder, when the shaft body rotates to drive the spiral ribbon stirring shaft below to stir and dry the intermediate powder, the shaft body also drives the rotating fan installed on the outer side wall of the connecting shaft to rotate inside the feed hopper with the assistance of the above components, turning over the intermediate powder so that the intermediate powder evenly enters the inside of the heating base through the feed hopper, ensuring the feeding efficiency of the dryer and being not prone to blockage;

[0015] (2) By providing components such as a fixing block, a fixing snap ring, an installation groove, and an installation shaft, when the spiral ribbon stirring shaft is deformed and damaged over time, due to the addition of the above components, the integrated structure between the spiral ribbon stirring shaft and the drying cylinder is changed to a split structure, thereby enabling the dryer to facilitate the replacement and maintenance of the spiral ribbon stirring shaft and having a better use effect;

[0016] (3) By providing components such as a rotating rod and a scraping rod, during the use of this intermediate powder dryer, the staff can observe the inside of the drying cylinder through the observation window. However, during the drying process of the powder dryer, the powder will adhere to the top inside the observation window, affecting the staff's observation of the drying cylinder through the observation window. Therefore, with the addition of the above components, the scraping rod can scrape the powder adhering to the top inside the observation window, making it clean and facilitating people to better observe the working condition of the drying cylinder through the observation window. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a front sectional structure schematic diagram of the present utility model;

[0018] Figure 2 of the present utility model Figure 1 is an enlarged sectional structure schematic diagram at A in

[0019] Figure 3 is an enlarged front view structure schematic diagram of the buffer spring of the present utility model;

[0020] Figure 4 is a front view structure schematic diagram of the heating seat of the present utility model.

[0021] In the figure: 1, drying cylinder; 2, heating seat; 3, cylinder cover; 4, filter screen; 5, vacuum extraction port; 6, shaft body; 7, reduction motor; 8, first bevel gear; 9, second bevel gear; 10, feed hopper; 11, connecting shaft; 12, spiral ribbon stirring shaft; 13, discharge valve; 14, fixing block; 15, fixing clamp ring; 16, mounting groove; 17, mounting shaft; 18, rotating fan; 19, observation window; 20, rotating rod; 21, scraping rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Embodiment 1: Please refer to Figures 1-4, a dryer for pharmaceutical intermediate powder, comprising a drying cylinder 1, a heating seat 2 is installed on the outer side wall of the drying cylinder 1, a blanking valve 13 is arranged at the bottom end of the drying cylinder 1, a cylinder cover 3 is installed at the top end of the drying cylinder 1, a vacuum extraction port 5 is arranged on one side of the top end of the cylinder cover 3, and a filter screen 4 is installed inside the vacuum extraction port 5. A feed hopper 10 is installed on the other side of the top end of the cylinder cover 3. A reduction motor 7 is arranged at the top end of the cylinder cover 3, and a shaft body 6 is installed inside the reduction motor 7. A first bevel gear 8 is installed on the outer side wall of the shaft body 6. A second bevel gear 9 is meshed and arranged on one side of the first bevel gear 8. A connecting shaft 11 is installed on one side of the second bevel gear 9, and one side of the connecting shaft 11 is fixed to one side inside the feed hopper 10. A rotating fan 18 is fixed on the outer side wall of the connecting shaft 11. A spiral ribbon stirring shaft 12 is arranged at the bottom end of the shaft body 6. An observation window 19 is installed at one end of the top of the cylinder cover 3. There are six groups of rotating fans 18. Two groups of rotating fans 18 are evenly distributed on the outer side wall of the connecting shaft 11. The evenly distributed rotating fans 18 have a better turning effect on the intermediate powder and are more uniform;

[0024] Specifically, as Figure 1 and Figure 3 shown, when the shaft body 6 rotates, the first bevel gear 8 installed on the outer side wall of the shaft body 6 rotates together. After the first bevel gear 8 rotates, it drives the second bevel gear 9 meshed on one side to rotate. When the second bevel gear 9 rotates, it drives the connecting shaft 11 to rotate. When the connecting shaft 11 rotates, the rotating fan 18 installed on its outer part will rotate inside the feed hopper 10 to turn the intermediate powder input through the feed hopper 10, so that the powder evenly enters the drying cylinder 1.

[0025] Embodiment 2: An installation groove 16 is arranged at the bottom end inside the shaft body 6. An installation shaft 17 is movably arranged inside the installation groove 16, and the bottom end of the installation shaft 17 is fixed to the top end of the spiral ribbon stirring shaft 12. Fixed clamping rings 15 are hingedly installed at the bottom ends on both sides of the shaft body 6. A fixing block 14 is movably arranged inside the fixed clamping ring 15, and one side of the fixing block 14 is fixed to the top ends on both sides of the spiral ribbon stirring shaft 12. Threads are evenly arranged on the inner side wall of the installation groove 16, and external threads are evenly arranged on the outer side wall of the installation shaft 17. A threaded connection is formed between the installation groove 16 and the installation shaft 17, which is convenient for the disassembly and assembly between the shaft body 6 and the spiral ribbon stirring shaft 12 and is more convenient to use. There are two groups of fixed clamping rings 15. The fixed clamping rings 15 are symmetrically distributed about the central axis of the shaft body 6. The cross-section of the fixed clamping ring 15 is larger than the cross-section of the fixing block 14. A clamping structure is formed between the fixed clamping ring 15 and the fixing block 14. The design of the clamping structure strengthens the connection between the shaft body 6 and the spiral ribbon stirring shaft 12;

[0026] Specifically, as Figure 1 and Figure 2As shown, after the drying cylinder 1 is opened, turn the fixing snap ring 15 to disengage it from the outer wall of the installation groove 16, then rotate the spiral ribbon stirring shaft 12 to disassemble and install it from the shaft body 6. Then, take a new spiral ribbon stirring shaft 12 and screw the installation shaft 17 at its top into the installation groove 16 at the inner bottom end of the shaft body 6. After screwing it in place, turn the fixing snap ring 15 to engage it with the outer wall of the fixing block 14 to lock the installation of the spiral ribbon stirring shaft 12.

[0027] Embodiment 3: A rotating rod 20 is movably arranged at the top end inside the observation window 19, and a scraping rod 21 is installed on one side of the bottom end of the rotating rod 20. The length of the scraping rod 21 is equal to the inner radius of the observation window 19. One end of the scraping rod 21 fits against the top end inside the observation window 19, cleaning the top end inside the observation window 19 more comprehensively and having a better cleaning effect.

[0028] Specifically, as Figure 4 shown, during the process of the dryer drying the intermediate powder, the staff can observe the drying situation inside the drying cylinder 1 through the observation window 19. If the powder adheres to the top end inside the observation window 19 and causes the observation window 19 to be blurred and affect the observation, the rotating rod 20 can be rotated to drive the scraping rod 21 to fit against the top end inside the observation window 19 for scraping, scraping off the powder adhering to the top end inside the observation window 19, and keeping the observation window 19 tilted to facilitate the staff to better observe the inside.

[0029] Working principle: When the present utility model is in use, open the feed hopper 10 and put the intermediate powder to be dried into the inside of the heating base 2 through the feed hopper 10. Before putting it in, first start the reduction motor 7 to drive the shaft body 6 to rotate, so that the shaft body 6 drives the spiral ribbon stirring shaft 12 below to rotate. When the shaft body 6 rotates, the first bevel gear 8 rotates together. After the first bevel gear 8 rotates, it drives the second bevel gear 9 meshed on one side to rotate. The second bevel gear 9 rotates and drives the rotating fan 18 to rotate inside the feed hopper 10 through the connecting shaft 11, turning the intermediate powder put in through the feed hopper 10, so that the powder evenly enters the inside of the drying cylinder 1. Then, the inside of the drying cylinder 1 is evacuated through the shaft body 6 by an external vacuum pumping device. Then, turn on the heating base 2 to heat the drying cylinder 1. While heating, the spiral ribbon stirring shaft 12 stirs the powder, enabling the powder to be quickly dried in a vacuum environment. The dried powder is discharged through the discharge valve 13. Subsequently, after the drying cylinder 1 is opened, the fixing snap ring 15 can be turned to disengage it from the outer wall of the installation groove 16, and then the spiral ribbon stirring shaft 12 can be rotated to disassemble and install it from the shaft body 6 to replace the spiral ribbon stirring shaft 12.

[0030] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A dryer for pharmaceutical intermediate powder, comprising a drying cylinder (1), characterized in that: A heating base (2) is installed on the outer side wall of the drying cylinder (1). A blanking valve (13) is arranged at the bottom end of the drying cylinder (1). A cylinder cover (3) is installed at the top end of the drying cylinder (1). A vacuum extraction port (5) is arranged on one side of the top end of the cylinder cover (3), and a filter screen (4) is installed inside the vacuum extraction port (5). A feed hopper (10) is installed on the other side of the top end of the cylinder cover (3). A reduction motor (7) is arranged at the top end of the cylinder cover (3), and a shaft body (6) is installed inside the reduction motor (7). A first bevel gear (8) is installed on the outer side wall of the shaft body (6). A second bevel gear (9) is meshed and arranged on one side of the first bevel gear (8). A connecting shaft (11) is installed on one side of the second bevel gear (9), and one side of the connecting shaft (11) is fixed to one side inside the feed hopper (10). A rotating fan (18) is fixed on the outer side wall of the connecting shaft (11). A spiral ribbon stirring shaft (12) is arranged at the bottom end of the shaft body (6). An observation window (19) is installed at one end of the top of the cylinder cover (3).

2. The dryer for a pharmaceutical intermediate powder according to claim 1, characterized in that: Six groups of the rotating fans (18) are provided, and two groups of the rotating fans (18) are evenly distributed on the outer side wall of the connecting shaft (11).

3. The dryer for a pharmaceutical intermediate powder according to claim 1, characterized in that: An installation groove (16) is arranged at the bottom end inside the shaft body (6). An installation shaft (17) is movably arranged inside the installation groove (16), and the bottom end of the installation shaft (17) is fixed to the top end of the spiral ribbon stirring shaft (12). Fixed clamping rings (15) are hinged and installed at the bottom ends on both sides of the shaft body (6). A fixing block (14) is movably arranged inside the fixed clamping ring (15), and one side of the fixing block (14) is fixed to the top ends on both sides of the spiral ribbon stirring shaft (12).

4. The dryer for a pharmaceutical intermediate powder according to claim 3, characterized in that: Internal side walls of the installation groove (16) are uniformly provided with threads, and an outer side wall of the installation shaft (17) is uniformly provided with external threads. A threaded connection is formed between the installation groove (16) and the installation shaft (17).

5. The dryer for a pharmaceutical intermediate powder according to claim 3, wherein: Two groups of the fixed clamping rings (15) are provided, and the fixed clamping rings (15) are symmetrically distributed about the central axis of the shaft body (6).

6. The dryer for a pharmaceutical intermediate powder according to claim 3, wherein: A cross section of the fixed clamping ring (15) is larger than a cross section of the fixing block (14), and a clamping structure is formed between the fixed clamping ring (15) and the fixing block (14).

7. The dryer for a pharmaceutical intermediate powder according to claim 1, characterized in that: A rotating rod (20) is movably arranged at the top end inside the observation window (19), and a scraping rod (21) is installed on one side of the bottom end of the rotating rod (20).

8. The dryer for a pharmaceutical intermediate powder according to claim 7, characterized in that: A length of the scraping rod (21) is equal to an inner radius of the observation window (19), and one end of the scraping rod (21) fits against the top end inside the observation window (19).

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