A feeding device for producing a medical intermediate

Abstract

The application relates to the technical field of medical intermediate production, in particular to a feeding device for medical intermediate production, which comprises a material suction machine main body and a hopper installed on the material suction machine main body, a material bucket is communicated with the discharge end of the hopper, a discharging pipe is communicated with the lower end of the material bucket, a quantitative feeding mechanism is arranged in the discharging pipe, a compression ring is installed at the inner top end of the material bucket through a lifting mechanism, and a conical rubber block is installed at the position close to the compression ring in the material bucket through an elastic assembly. Part of the oxygen mixed in the powdery raw material of the medical intermediate can be compressed and discharged and then conveyed into a reaction kettle, so that the influence of the existence of the oxygen on the chemical reaction path is avoided, the quality of the generated intermediate is prevented from being reduced, and the generation of the unexpected by-products is avoided. The compressed powdery raw material in the material bucket can be uniformly vibrated, so that the compressed powdery raw material in the material bucket is not prone to being cemented and causing the discharging difficulty.

Description

Technical Field

[0001] This invention relates to the field of pharmaceutical intermediate production technology, specifically to a feeding device for pharmaceutical intermediate production. Background Technology

[0002] Pharmaceutical intermediates are chemical substances used in the synthesis of pharmaceutical products. The production of pharmaceutical intermediates often involves the use of reaction vessels. Chemical raw materials and solvents are added to the reaction vessel and stirred. After the reaction is complete, the reaction products are discharged and separated and purified to obtain the pharmaceutical intermediate.

[0003] Pharmaceutical intermediates are usually made of powder and packaged in bags. The bags need to be opened and the powdered raw materials are transported to the reactor through the feed pipe by a suction pump. The suction pump mainly uses an internal vacuum pump to create negative pressure in the suction pipe. The suction pipe is inserted into the bag to transport the powdered raw materials into the hopper of the suction pump. The discharge end of the hopper is connected to the feed pipe of the reactor through a pipe. The hopper has a built-in electric valve to control the amount of powdered raw materials fed into the reactor.

[0004] However, during the bag opening process and the process of the feeding machine extracting the powdered raw materials, the powdered raw materials come into contact with air. This makes it easy for some oxygen from the air to be trapped in the powdered raw materials added to the reactor. The presence of oxygen affects the chemical reaction pathway, leading to a decrease in the quality of the generated intermediates and the generation of undesirable byproducts. To address this, we propose a feeding device for the production of pharmaceutical intermediates. Summary of the Invention

[0005] The purpose of this invention is to provide a feeding device for the production of pharmaceutical intermediates, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a feeding device for the production of pharmaceutical intermediates, comprising a suction machine body and a hopper installed on the suction machine body, wherein the discharge end of the hopper is connected to a material barrel, the lower end of the material barrel is connected to a discharge pipe, the discharge pipe is provided with a quantitative feeding mechanism, a compression ring is installed at the top of the material barrel via a lifting mechanism, and a conical rubber block is installed near the compression ring inside the material barrel via an elastic component, the center of the conical rubber block corresponding to the center of the compression ring, a rubber ring is installed near the upper edge of the inner wall of the material barrel via an elastic component, the upper end of the rubber ring near the edge of the inner ring is in contact with the lower end of the compression ring, and a rubber ring is fixedly connected to the upper end of the rubber ring away from the inner ring, the outer wall of the rubber ring is in contact with the inner wall of the material barrel, and an exhaust mechanism is symmetrically provided near the lower edge of the outer wall of the material barrel.

[0007] Preferably, the quantitative feeding mechanism includes a feeding column, an upper slot, a lower slot, and a support plate. The feeding column is rotatably mounted on the inner wall of the feeding pipe. The support plate is fixedly connected to the side wall of the feeding pipe near the lower edge, and a motor is fixedly mounted on the upper end of the support plate. The output shaft of the motor movably passes through the inner wall of the feeding pipe, and the output shaft end of the motor is fixedly connected to one end of the feeding column. The outer wall of the feeding column is provided with multiple grooves, and the upper slot and the lower slot are respectively opened at the top and bottom of the inner wall of the feeding pipe.

[0008] Preferably, the lifting mechanism includes two fixed blocks, which are symmetrically fixedly connected to the outer wall of the hopper. An electric push rod is fixedly installed through the inner wall of each of the two fixed blocks. The telescopic shafts of the two electric push rods are movably inserted through the upper inner wall of the hopper, and the telescopic shaft ends of the two electric push rods are fixedly connected to the upper end of the compression ring.

[0009] Preferably, the elastic component includes two guide posts and two rubber sleeves. The two guide posts are symmetrically slidably inserted into the upper inner wall of the material barrel near the edge, and both guide posts are movably inserted through the lower end of the compression ring. The upper ends of the two guide posts are fixedly connected to round blocks, and the lower ends of the two guide posts are fixedly connected to connecting frames. One end of each connecting frame is fixedly connected to the outer wall of the conical rubber block. The lower ends of the two round blocks are fixedly connected to the upper end of the material barrel, and the two springs are slidably sleeved on the outer walls of the two guide posts. The two rubber sleeves are fixedly inserted into the inner wall of the compression ring at the corresponding positions of the two guide posts, and the inner walls of the two rubber sleeves are respectively in contact with the outer walls of the two guide posts.

[0010] Preferably, the elastic component includes two guide posts, which are symmetrically slidably inserted into the upper inner wall edge of the material barrel. Both guide posts are fixedly inserted through the lower end of the rubber ring. The upper ends of both guide posts are fixedly connected to discs, and the lower ends of both guide posts are fixedly connected to the upper end of the rubber ring. The lower ends of the two discs are fixedly connected to the upper end of the material barrel, and the two springs are slidably sleeved on the outer walls of the two guide posts.

[0011] Preferably, the exhaust mechanism includes an exhaust pipe connected to the outer wall of the material barrel near its lower edge. A filter screen is fixedly connected to the inner wall of the exhaust pipe near the material barrel. The upper surface of the filter screen is adapted to the inner wall of the material barrel, and a splicing ring is fixedly connected to the lower surface of the filter screen. The outer ring surface of the splicing ring is fixedly connected to the inner wall of the exhaust pipe, and a frustum-shaped rubber block is attached to the lower edge of the inner ring surface of the splicing ring. Multiple support columns are fixedly connected to the lower end of the frustum-shaped rubber block. A cross-shaped plate is slidably sleeved on the outer wall of the multiple support columns. Multiple springs are fixedly connected between the cross-shaped plate and the splicing ring, and the multiple springs are slidably sleeved on the outer wall of the multiple support columns.

[0012] Preferably, L-shaped rods are installed at the front and rear of the material barrel via connecting components. One end of each of the two L-shaped rods is attached to the outer wall of the material barrel, and one end of each of the two L-shaped rods is close to the two exhaust pipes. Multiple triangular blocks are fixedly connected from top to bottom to the vertical surfaces of the two L-shaped rods. U-shaped rods are fixedly connected to the outer walls of the two circular blocks, and L-shaped blocks are fixedly connected to the outer walls of the two U-shaped rods. The ends of the two L-shaped blocks that are far apart from each other are respectively attached to the upper inclined surface of the uppermost triangular block on the two L-shaped rods.

[0013] Preferably, the connecting assembly includes two connecting columns, which are symmetrically fixedly connected to the outer wall of the material barrel at the corresponding L-shaped rod. The ends of the two connecting columns away from the material barrel are movably inserted through the L-shaped rod. A spring is slidably sleeved on the outer wall of each of the two connecting columns, and the two springs are fixedly connected between the L-shaped rod and the material barrel.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. Through the cooperation of the main body of the suction machine, hopper, barrel, discharge pipe, quantitative feeding mechanism, lifting mechanism, compression ring, elastic component, conical rubber block, elastic component, rubber ring, rubber ring and exhaust mechanism, some of the oxygen mixed in the powdered raw materials of pharmaceutical intermediates can be compressed and discharged and then transported to the reaction vessel, thereby avoiding the presence of oxygen from affecting the chemical reaction path and causing a decrease in the quality of the intermediates, and avoiding the generation of undesirable by-products.

[0016] 2. Through the cooperation of L-shaped rods, triangular blocks, U-shaped rods, L-shaped blocks and connecting components, uniform vibration can be generated on the compressed powdery raw materials in the hopper, so that the compressed powdery raw materials in the hopper are not prone to caking and causing difficulty in feeding. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a partial view of the material hopper of the present invention;

[0019] Figure 3 For the present invention Figure 2 Enlarged view of the structure at point A in the middle;

[0020] Figure 4 This is a partial cross-sectional view of the material bucket and the discharge pipe of the present invention;

[0021] Figure 5 For the present invention Figure 4 Enlarged view of the structure at point B in the middle;

[0022] Figure 6 This is a partial cross-sectional view of the material barrel, compression ring, rubber ring, and rubber ring of the present invention.

[0023] Figure 7 For the present invention Figure 6 Enlarged view of the structure at point C;

[0024] Figure 8 This is a cross-sectional view of the material bucket and the feeding pipe of the present invention.

[0025] The components represented by each number in the attached diagram are listed below: 1. Hopper; 2. L-shaped rod; 3. Feeding pipe; 4. Electric push rod; 5. Material bucket; 6. Motor; 7. Main body of the suction machine; 8. Fixing block; 9. Guide post one; 10. Guide post two; 11. Exhaust pipe; 12. Support plate; 13. Triangular block; 14. L-shaped block; 15. U-shaped rod; 16. Lower slot; 17. Connecting column; 18. Spring one; 19. Disc; 20. Conical rubber block; 21. Compression ring; 22. Rubber ring; 23. Filter screen; 24. Feeding column; 25. Rubber ring; 26. Spring two; 27. Round block; 28. Spring three; 29. ​​Splicing ring; 30. Support column; 31. Cross-shaped plate; 32. Spring four; 33. Frustum-shaped rubber block; 34. Connecting frame; 35. Rubber sleeve; 36. Upper slot. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1: Please refer to Figures 1-8 The figure shows a feeding device for the production of pharmaceutical intermediates, including a suction machine body 7 and a hopper 1 installed on the suction machine body 7. The discharge end of the hopper 1 is connected to a material barrel 5, and the lower end of the material barrel 5 is connected to a feeding pipe 3. The feeding pipe 3 is equipped with a quantitative feeding mechanism. A compression ring 21 is installed at the top of the inside of the material barrel 5 through a lifting mechanism. A conical rubber block 20 is installed inside the material barrel 5 near the compression ring 21 through an elastic component. The center of the conical rubber block 20 corresponds to the center of the compression ring 21. A rubber ring 25 is installed on the inner wall of the material barrel 5 near the upper edge through an elastic component. The upper end of the rubber ring 25 near the edge of the inner ring is in contact with the lower end of the compression ring 21. A rubber ring 22 is fixedly connected to the upper end of the rubber ring 25 away from the inner ring. The outer wall of the rubber ring 22 is in contact with the inner wall of the material barrel 5. An exhaust mechanism is symmetrically provided on the outer wall of the material barrel 5 near the lower edge.

[0028] The quantitative feeding mechanism includes a feeding column 24, an upper slot 36, a lower slot 16, and a support plate 12. The feeding column 24 is rotatably mounted on the inner wall of the feeding pipe 3. The support plate 12 is fixedly connected to the side wall of the feeding pipe 3 near the lower edge. A motor 6 is fixedly mounted on the upper end of the support plate 12. The output shaft of the motor 6 moves through the inner wall of the feeding pipe 3, and the output shaft end of the motor 6 is fixedly connected to one end of the feeding column 24. The outer wall of the feeding column 24 has multiple grooves. The upper slot 36 and the lower slot 16 are respectively opened at the top and bottom of the inner wall of the feeding pipe 3.

[0029] The lifting mechanism includes two fixed blocks 8, which are symmetrically fixedly connected to the outer wall of the hopper 1. Electric push rods 4 are fixedly installed through the inner walls of both fixed blocks 8. The telescopic shafts of the two electric push rods 4 are movably connected through the upper inner wall of the material barrel 5, and the telescopic shaft ends of the two electric push rods 4 are fixedly connected to the upper end of the compression ring 21. Specifically, when the two electric push rods 4 are activated, the two electric push rods 4 can drive the compression ring 21 to move downward, and vice versa, they can drive the compression ring 21 to move upward.

[0030] The elastic component includes two guide posts 10 and two rubber sleeves 35. The two guide posts 10 are symmetrically slidably inserted into the upper inner wall of the material barrel 5 near the edge, and both guide posts 10 are movably inserted through the lower end of the compression ring 21. The upper end of each guide post 10 is fixedly connected to a round block 27, and the lower end of each guide post 10 is fixedly connected to a connecting frame 34. One end of each connecting frame 34 is fixedly connected to the outer wall of the conical rubber block 20. The lower end of each round block 27 is fixedly connected to the upper end of the material barrel 5 with a spring 28. The two springs 28 are slidably sleeved on the outer walls of the two guide posts 10. The two rubber sleeves 35 are fixedly inserted into the inner wall of the compression ring 21 at the corresponding positions of the two guide posts 10, and the inner walls of the two rubber sleeves 35 are respectively in contact with the outer walls of the two guide posts 10. Specifically, by setting the rubber sleeves 35, the sealing between the guide posts 10 and the compression ring 21 is increased.

[0031] The elastic component includes two guide posts 9, which are symmetrically slidably inserted into the upper inner wall edge of the material barrel 5. Both guide posts 9 are fixedly inserted through the lower end of the rubber ring 22. The upper ends of both guide posts 9 are fixedly connected to a disc 19, and the lower ends of both guide posts 9 are fixedly connected to the upper end of the rubber ring 25. The lower ends of the two discs 19 are fixedly connected to the upper end of the material barrel 5, and the two springs 26 are slidably sleeved on the outer walls of the two guide posts 9.

[0032] The exhaust mechanism includes an exhaust pipe 11, which is connected to the outer wall of the material barrel 5 near the lower edge. A filter screen 23 is fixedly connected to the inner wall of the exhaust pipe 11 near the material barrel 5. The upper surface of the filter screen 23 is adapted to the inner wall of the material barrel 5, and a splicing ring 29 is fixedly connected to the lower surface of the filter screen 23. The outer ring surface of the splicing ring 29 is fixedly connected to the inner wall of the exhaust pipe 11, and a frustum-shaped rubber block 33 is attached to the lower edge of the inner ring surface of the splicing ring 29. Multiple support columns 30 are fixedly connected to the lower end of the frustum-shaped rubber block 33. A cross-shaped plate 31 is slidably sleeved on the outer wall of the multiple support columns 30. Multiple springs 32 are fixedly connected between the cross-shaped plate 31 and the splicing ring 29. The multiple springs 32 are slidably sleeved on the outer wall of the multiple support columns 30.

[0033] In this embodiment, the feeding pipe 3 is first connected to the feed pipe of the reactor through a pipeline. After the bag of powdered raw material of pharmaceutical intermediate is opened, the suction pipe of the suction machine body 7 is inserted into the bag and the suction machine body 7 is started to transport the powdered raw material into the hopper 1. The hopper 1 has a built-in electric valve that can control the transport of the powdered raw material in the hopper 1 to the material barrel 5. This is known prior art and will not be described in detail.

[0034] When the powdered raw material enters the material barrel 5, it will first come into contact with the conical rubber block 20 and slide down along the conical surface of the conical rubber block 20 to the bottom of the material barrel 5. After the material hopper 5 is filled with an appropriate amount of powdered raw material, the powdered raw material bag will come into contact with air after being opened and during the conveying process by the main body 7 of the suction machine. When it enters the material hopper 5, it will be mixed with some oxygen from the air. At this time, the lifting mechanism can drive the compression ring 21 to move downwards. The compression ring 21 can push the rubber ring 25 and rubber ring 22 downwards together. The rubber ring 25 will drive the two guide posts 9 to slide down the inner wall of the material hopper 5. The discs 19 at the upper ends of the two guide posts 9 will squeeze the spring 26 connected to the upper end of the material hopper 5. As the compression ring 21 continues to move downwards, the lower edge of the inner ring surface of the compression ring 21 will push the conical rubber block 20 downwards. The conical rubber block 20 will drive the two connecting frames 34 downwards. The two connecting frames 34 will drive the guide posts 10 connected to them to slide down the inner wall of the material hopper 5, and the discs 27 at the upper ends of the two guide posts 10 will squeeze the spring 28 connected to the upper end of the material hopper 5. The compression ring 21, conical rubber block 20, rubber ring 25, and rubber ring 22 form a sealed structure. The rubber ring 25 and rubber ring 22 slide in contact with the inner wall of the material barrel 5, which pushes the air in the material barrel 5 downward. Subsequently, the compression ring 21, conical rubber block 20, and rubber ring 25 will squeeze the powdery raw material accumulated in the material barrel 5, so that the air mixed in the powdery raw material will eventually be discharged along the filter screen 23 in the two exhaust pipes 11. The powdery raw material will not pass through the filter screen 23. When the air passes through the filter screen 23, under the action of air pressure, it can push the frustum-shaped rubber block 33 away from the splicing ring 29. The frustum-shaped rubber block 33 will drive the multiple support columns 30 to slide outward in the inner wall of the cross-shaped plate 31, and the frustum-shaped rubber block 33 will squeeze the spring 4 32 connected to the cross-shaped plate 31 until the exhaust is completed. At this time, under the action of the spring 4 32, the frustum-shaped rubber block 33 will quickly reset and seal the splicing ring 29.

[0035] Finally, starting the motor 6 drives the feeding column 24 to rotate slowly. Each time the feeding column 24 rotates, the multiple grooves on its outer wall will not only receive the material through the upper groove 36 in the feeding pipe 3, but also discharge the material into the reactor through the lower groove 16 in the feeding pipe 3, thereby achieving intermittent quantitative feeding. The amount of material fed is easier to control, avoiding excessive or insufficient feeding that could lead to uneven subsequent reactions.

[0036] It should be noted that some of the oxygen trapped in the powdered raw materials of pharmaceutical intermediates can be removed before being transported into the reaction vessel, thereby avoiding the influence of oxygen on the chemical reaction pathway and the resulting intermediate quality degradation, and avoiding the generation of undesirable byproducts.

[0037] It should also be noted that after the powdered raw material in the material hopper 5 has been fed in, the lifting mechanism can be used to quickly move the compression ring 21 upwards. The compression ring 21 will first disengage from the rubber ring 25 and rubber ring 22. At this time, under the force of spring 3 28, the conical rubber block 20 will move upwards to return to its original position. Then, under the force of spring 26, the rubber ring 25 and rubber ring 22 will also move upwards to return to their original position. However, since the rubber ring 25 and rubber ring 22 are in contact with the inner wall of the material hopper 5, there is a certain friction between them. The rubber ring 25 and rubber ring 22 will then slowly move upwards to reset. The compression ring 21 and conical rubber block 20 will return to their original position first, while the rubber ring 25 and rubber ring 22 will return to their original position later, avoiding unnecessary negative pressure inside the material hopper 5.

[0038] Example 2: Please refer to Figures 1-4 This embodiment further illustrates Example 1. In the figure, L-shaped rods 2 are installed at the front and rear of the material barrel 5 through connecting components. The corresponding ends of the two L-shaped rods 2 are attached to the outer wall of the material barrel 5, and the corresponding ends of the two L-shaped rods 2 are close to the two exhaust pipes 11. The vertical surfaces of the two L-shaped rods 2 are fixedly connected to multiple triangular blocks 13 from top to bottom. The outer walls of the two round blocks 27 are fixedly connected to U-shaped rods 15, and the outer walls of the two U-shaped rods 15 are fixedly connected to L-shaped blocks 14. The ends of the two L-shaped blocks 14 that are far apart from each other are respectively attached to the upper inclined surface of the uppermost triangular block 13 on the two L-shaped rods 2.

[0039] The connecting assembly includes two connecting posts 17, which are symmetrically fixedly connected to the outer wall of the material barrel 5 at the corresponding L-shaped rod 2. The ends of the two connecting posts 17 away from the material barrel 5 are movably inserted through the L-shaped rod 2. Springs 18 are slidably sleeved on the outer wall of the two connecting posts 17, and the two springs 18 are fixedly connected between the L-shaped rod 2 and the material barrel 5.

[0040] In this embodiment, as the two circular blocks 27 move downwards, they will cause the U-shaped rods 15 and L-shaped blocks 14 connected to them to move downwards together. The L-shaped blocks 14 will press the upper inclined surface of the uppermost triangular block 13 on the L-shaped rod 2, causing the uppermost triangular block 13 to move away from the L-shaped block 14 and drive the L-shaped rod 2 to move together. The L-shaped rod 2 will slide on the outer wall of the two connecting columns 17, and the L-shaped rod 2 will stretch the two springs 18 connected to the material barrel 5 until the L-shaped block 14 leaves the uppermost triangular block 13. At this time, under the force of the springs 18, the L-shaped rod 2 will return to its original position, and the end of the L-shaped rod 2 will hit the outer wall of the material barrel 5 near the exhaust pipe 11, causing the material barrel 5 to vibrate. Since there are multiple triangular blocks 13 on the L-shaped rod 2, the material barrel 5 can be subjected to multiple vibrations caused by the L-shaped rod 2. Conversely, during the process of the circular blocks 27 moving upwards back to their original position, the L-shaped rod 2 will also cause multiple impact vibrations on the material barrel 5. The filter screen 23 in the exhaust pipe 11 and the compressed powdered material in the material barrel 5 will resonate, which not only makes the filter screen 23 less prone to clogging, but also makes the compressed powdered material in the material barrel 5 less prone to caking and causing difficulty in feeding.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A feeding device for the production of pharmaceutical intermediates, comprising a suction feeder body (7) and a hopper (1) installed on the suction feeder body (7), characterized in that: The discharge end of the hopper (1) is connected to the material barrel (5), and the lower end of the material barrel (5) is connected to the feeding pipe (3). The feeding pipe (3) is equipped with a quantitative feeding mechanism. The top of the inside of the material barrel (5) is equipped with a compression ring (21) through a lifting mechanism. The inside of the material barrel (5) is equipped with a conical rubber block (20) through an elastic component near the compression ring (21). The center of the conical rubber block (20) corresponds to the center of the compression ring (21). The inner wall of the material barrel (5) is equipped with a rubber ring (25) through an elastic component near the upper edge. The upper end of the rubber ring (25) is close to the lower end of the compression ring (21) near the inner ring. The upper end of the rubber ring (25) is fixedly connected to the edge away from the inner ring. The outer wall of the rubber ring (22) is close to the inner wall of the material barrel (5). The outer wall of the material barrel (5) is symmetrically equipped with an exhaust mechanism near the lower edge. The elastic component includes two guide posts (10) and two rubber sleeves (35). The two guide posts (10) are symmetrically slidably inserted into the upper inner wall of the material barrel (5) near the edge. Both guide posts (10) are movably inserted through the lower end of the compression ring (21). The upper ends of the two guide posts (10) are fixedly connected to round blocks (27), and the lower ends of the two guide posts (10) are fixedly connected to connecting brackets (34). The corresponding ends of the two connecting brackets (34) are... The two circular blocks (27) are fixedly connected to the outer wall of the conical rubber block (20). The lower ends of the two circular blocks (27) are fixedly connected to the upper ends of the material bucket (5). The two springs (28) are slidably sleeved on the outer walls of the two guide posts (10). The two rubber sleeves (35) are fixedly inserted into the inner wall of the compression ring (21) at the corresponding positions of the two guide posts (10). The inner walls of the two rubber sleeves (35) are respectively in contact with the outer walls of the two guide posts (10). The elastic component includes two guide posts (9), which are symmetrically slidably inserted into the upper inner wall edge of the material barrel (5). Both guide posts (9) are fixedly inserted through the lower end of the rubber ring (22). The upper ends of both guide posts (9) are fixedly connected to discs (19), and the lower ends of both guide posts (9) are fixedly connected to the upper end of the rubber ring (25). The lower ends of the two discs (19) are fixedly connected to the upper end of the material barrel (5), and the two springs (26) are slidably sleeved on the outer wall of the two guide posts (9).

2. The feeding device for pharmaceutical intermediate production according to claim 1, characterized in that: The quantitative feeding mechanism includes a feeding column (24), an upper slot (36), a lower slot (16), and a support plate (12). The feeding column (24) is rotatably installed on the inner wall of the feeding pipe (3). The support plate (12) is fixedly connected to the side wall of the feeding pipe (3) near the lower edge. A motor (6) is fixedly installed on the upper end of the support plate (12). The output shaft of the motor (6) moves through the inner wall of the feeding pipe (3). The output shaft end of the motor (6) is fixedly connected to one end of the feeding column (24). The outer wall of the feeding column (24) has multiple grooves. The upper slot (36) and the lower slot (16) are respectively opened at the top and bottom of the inner wall of the feeding pipe (3).

3. The feeding device for pharmaceutical intermediate production according to claim 1, characterized in that: The lifting mechanism includes two fixed blocks (8), which are symmetrically fixedly connected to the outer wall of the hopper (1). Electric push rods (4) are fixedly installed through the inner walls of the two fixed blocks (8). The telescopic shafts of the two electric push rods (4) are movably connected through the upper inner wall of the bucket (5), and the telescopic shaft ends of the two electric push rods (4) are fixedly connected to the upper end of the compression ring (21).

4. The feeding device for pharmaceutical intermediate production according to claim 1, characterized in that: The exhaust mechanism includes an exhaust pipe (11) connected to the outer wall of the material barrel (5) near the lower edge. A filter screen (23) is fixedly connected to the inner wall of the exhaust pipe (11) near the material barrel (5). The upper surface of the filter screen (23) is adapted to the inner wall of the material barrel (5), and a splicing ring (29) is fixedly connected to the lower surface of the filter screen (23). The outer ring surface of the splicing ring (29) is fixedly connected to the inner wall of the exhaust pipe (11). Furthermore, a frustum-shaped rubber block (33) is attached to the lower edge of the inner ring surface of the splicing ring (29). The lower end of the frustum-shaped rubber block (33) is fixedly connected to multiple support columns (30). A cross-shaped plate (31) is slidably sleeved on the outer wall of the multiple support columns (30). Multiple springs (32) are fixedly connected between the cross-shaped plate (31) and the splicing ring (29). The multiple springs (32) are slidably sleeved on the outer wall of the multiple support columns (30).

5. The feeding device for pharmaceutical intermediate production according to claim 1, characterized in that: L-shaped rods (2) are installed at the front and rear of the material barrel (5) through connecting components. The corresponding ends of the two L-shaped rods (2) are attached to the outer wall of the material barrel (5), and the corresponding ends of the two L-shaped rods (2) are close to the two exhaust pipes (11). The vertical surfaces of the two L-shaped rods (2) are fixedly connected from top to bottom to multiple triangular blocks (13). The outer walls of the two round blocks (27) are fixedly connected to U-shaped rods (15), and the outer walls of the two U-shaped rods (15) are fixedly connected to L-shaped blocks (14). The ends of the two L-shaped blocks (14) that are far apart from each other are attached to the upper inclined surface of the uppermost triangular block (13) on the two L-shaped rods (2).

6. The feeding device for pharmaceutical intermediate production according to claim 5, characterized in that: The connecting assembly includes two connecting posts (17), which are symmetrically fixedly connected to the outer wall of the material bucket (5) at the corresponding L-shaped rod (2). The ends of the two connecting posts (17) away from the material bucket (5) are movably inserted through the L-shaped rod (2). Springs (18) are slidably sleeved on the outer wall of the two connecting posts (17), and the two springs (18) are fixedly connected between the L-shaped rod (2) and the material bucket (5).

Images