Feeding device for pharmacy

Abstract

The invention discloses a feeding device for pharmacy, and relates to the technical field of pharmacy feeding, the feeding device comprises a pharmacy suction mechanism, the pharmacy suction mechanism comprises a vacuum suction bin, a filter element mounting cylinder is mounted on the inner side of the top of the vacuum suction bin, and a filter element is arranged at the bottom of the filter element mounting cylinder in a penetrating manner; according to the feeding device for pharmacy, raw materials form air vortexes in the raw material middle gathering and dust reducing mechanism, the amount of dust raised when the raw materials fall is reduced, a filter element is prevented from being blocked too fast, and the feeding device for pharmacy further comprises a filter element follow-up cleaning mechanism and a raw material middle gathering and dust reducing mechanism. No extra power part is needed for cleaning the filter element, use of electric energy is reduced, when raw materials in the conical hopper are reduced, the airflow speed at the annular gap is increased, the raw materials attached to the side wall of the conical hopper are blown off, and the raw materials attached to the side wall of the conical hopper rapidly fall into the center of the bottom in the conical hopper and then are rapidly sucked away.

Description

Technical Field

[0001] The present invention relates to the technical field of pharmaceutical feeding, and specifically provides a feeding device for pharmaceutical production. Background Art

[0002] At present, most pharmaceutical raw materials are granular or powdery. When transporting pharmaceutical raw materials, a vacuum feeding machine is generally used. A vacuum feeding machine is a dust-free and airtight pipeline conveying device that uses vacuum suction to convey granular and powdery materials. By utilizing the air pressure difference between the vacuum and the ambient space, gas flow is formed in the pipeline, driving the materials to move and completing the transportation of the materials. This transportation method can prevent dust environmental pollution and improve the working environment. When the existing vacuum feeding machine is in use, large amounts of dust are easily raised during the falling process of the raw materials into the vacuum suction bin, and the filter element is easily blocked too quickly. When cleaning the filter element, additional power components are required to suck the raw materials from the center of the bottom of the hopper. As the raw materials gradually decrease, the raw materials in the middle of the hopper gradually collapse downward. At this time, a lot of raw materials adhere to the inner wall of the hopper and cannot slide to the center of the bottom of the hopper to be sucked away. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a feeding device for pharmaceutical production. In the raw material central convergence and dust reduction mechanism, air vortices are formed for the raw materials. Due to the centrifugal force, the raw materials rotate along the inner wall of the raw material central convergence and dust reduction mechanism and gradually descend, promoting the sedimentation of the powder in the raw materials to the bottom of the vacuum suction bin, which is beneficial to reducing the amount of dust raised when the raw materials fall, avoiding the filter element from being blocked too quickly, and not requiring additional power components for cleaning the filter element, reducing the use of electric energy. When the raw materials in the conical hopper decrease, the air flow velocity at the annular gap increases, blowing off the raw materials adhering to the side wall of the conical hopper, enabling the raw materials adhering to the side wall of the conical hopper to quickly fall into the center of the bottom of the conical hopper and be quickly sucked away, effectively solving the problems in the background art.

[0004] To achieve the above object, the present invention provides the following technical solution: A feeding device for pharmaceutical production, including a pharmaceutical suction mechanism, the pharmaceutical suction mechanism includes a vacuum suction bin, a filter element installation cylinder is installed inside the top of the vacuum suction bin, a plurality of filter elements are inserted through the bottom of the filter element installation cylinder, a bin cover is installed on the top of the vacuum suction bin, and a rotary air lock is installed at the bottom of the vacuum suction bin. The left side in the middle of the vacuum suction bin is connected to the end of a suction pipe, and further includes: A filter element follow-up cleaning mechanism, including a negative pressure follow-up control component and a filter element cleaning component. The filter element cleaning component is installed on the filter element installation cylinder, the filter element cleaning component is connected to the negative pressure follow-up control component, and the top of the negative pressure follow-up control component is slidably connected to the inside of the suction cylinder body; The dust reduction mechanism for central convergence of raw materials is installed in the middle of the vacuum suction bin. The end of the suction pipe extends into the vacuum suction bin and is connected to the dust reduction mechanism for central convergence of raw materials.

[0005] The air lock is of pressure-resistant type. The bottom of the vacuum suction bin is sealed by the air lock, and the air at the top inside the vacuum suction bin is pumped away, making the top inside the vacuum suction bin in a negative pressure state, or in a state close to vacuum. External air enters the middle of the vacuum suction bin through the suction pipe, and then is pumped to the outside of the vacuum suction bin after passing through the filter element. At this time, the end of the suction pipe far from the vacuum suction bin is extended into the hopper mechanism, and the raw materials in the hopper mechanism will enter the suction pipe along with the air flow, and then the raw materials enter the vacuum suction bin. The raw materials will fall to the bottom inside the vacuum suction bin due to gravity. The dust raised when the raw materials fall will approach the filter element along with the air flow, and the dust is filtered by the filter element. When the vacuum suction bin is pumped to a negative pressure, the negative pressure will also drive the negative pressure follow-up control component to move upward. The negative pressure follow-up control component drives the filter element cleaning component to move upward relative to the vacuum suction bin and the filter element until the filter element cleaning component corresponds to the top of the filter element. A large amount of the dust filtered by the filter element will remain on the outer peripheral side of the filter element. When the pumping of the vacuum suction bin to a negative pressure stops, the negative pressure follow-up control component will no longer move upward under the action of the negative pressure. At this time, the negative pressure follow-up control component drives the filter element cleaning component to move downward and reset. During the downward movement of the filter element cleaning component, the dust on the outer peripheral side of the filter element will be cleaned, and the dust will fall to the bottom inside the vacuum suction bin. In order to reduce the dust raised when the raw materials fall in the vacuum suction bin and approach the filter element along with the air flow, resulting in the rapid blockage of the filter element and avoiding excessive load when pumping the vacuum suction bin to a negative pressure, a dust reduction mechanism for central convergence of raw materials is provided. When the suction pipe extracts and sends the raw materials into the vacuum suction bin, the raw materials first enter the dust reduction mechanism for central convergence of raw materials, and an air vortex is formed in the dust reduction mechanism for central convergence of raw materials. The air vortex is conducive to the settlement of the powder in the raw materials to the center of the bottom inside the vacuum suction bin, which is conducive to reducing the dust raised when the raw materials fall in the vacuum suction bin. The reduction of the raised dust will also delay the blockage speed of the filter element by the dust, improve the service life of the filter element, and is conducive to reducing the replacement frequency of the filter element.

[0006] Furthermore, the pharmaceutical suction mechanism further includes an air suction pipe, a vacuum pump and an air suction cylinder body. The center of the bin cover is fixedly connected to the bottom end of the air suction cylinder body, and the top end of the air suction cylinder body is connected to the air inlet of the vacuum pump through the air suction pipe. When the vacuum pump works, the air inside the bin cover is pumped into a negative pressure state through the air suction pipe and the air suction cylinder body, making the inside of the vacuum suction bin in a negative pressure state or in a state close to vacuum. At this time, external raw materials enter the vacuum suction bin along with the air flow through the suction pipe, and the air suction cylinder body is used for cooperative installation with the negative pressure follow-up control component.

[0007] Furthermore, the filter element cleaning assembly includes sliding columns, a cleaning bracket, an annular cleaning brush, a fixed sealing ring, a conical sealing ring, and a follower plate. Two sliding columns are vertically and slidably installed in two sliding holes at the bottom of the filter element installation cylinder respectively. The bottom ends of the two sliding columns are fixedly connected to the cleaning bracket. Annular cleaning brushes that cooperate with the outer peripheral sides of the respective filter elements are installed on the cleaning bracket. The top ends of the two sliding columns are respectively connected to both ends of the follower plate. A fixed sealing ring is fixedly connected to the bottom surface of the filter element installation cylinder at a position corresponding to the sliding columns. An annular groove is formed at the bottom of the fixed sealing ring. A conical sealing ring is fixedly connected to the top surface of the cleaning bracket at a position corresponding to the sliding columns.

[0008] Furthermore, the negative pressure follower control assembly includes a piston and a side branch pipe. The bottom end of a follower piston column is fixedly connected to the center of the top of the follower plate. A piston is installed at the top end of the follower piston column. The piston is slidably connected to the inner side of the suction cylinder body. The center of the top of the follower plate is connected to the bottom end of a compression spring. The top end of the compression spring is connected to the center of the inner top of the bin cover. One end of the side branch pipe is connected to the middle side of the suction cylinder body, and the other end of the side branch pipe is connected to the top side of the suction cylinder body.

[0009] When the vacuum pump starts to work, the suction pipe and the inside of the suction cylinder body are initially in a negative pressure state. The negative pressure inside the suction cylinder body drives the piston to move upward in the suction cylinder body. The piston drives the follower plate to move upward through the follower piston column. The follower plate drives the sliding column to move upward relative to the bottom of the filter element installation cylinder, and also drives the cleaning bracket and the annular cleaning brush to move upward. At this time, the compression spring is compressed. When the bottom surface of the piston is higher than the bottom end of the side branch pipe in the suction cylinder body, the air in the bin cover will first enter the area below the piston in the suction cylinder body, then pass through the side branch pipe and enter the top of the suction cylinder body, and finally be pumped away by the vacuum pump through the suction pipe. The vacuum pump operates stably, the height of the piston in the suction cylinder body remains stable, and the air flow also passes through the side branch pipe stably. At this time, the annular cleaning brush is located at the top of the filter element, and the top of the conical sealing ring cooperates with the annular groove at the bottom of the fixed sealing ring to prevent the air flow containing dust from passing through the gap between the filter element installation cylinder and the sliding column, thereby preventing the air flow containing raw material dust from bypassing the filter element and damaging the vacuum pump, avoiding the loss of raw materials being discharged, and also preventing raw material dust from being discharged into the working environment and polluting the working environment. At this time, the external raw materials enter the vacuum suction bin along with the air flow through the suction pipe. The dust in the air flow is filtered by the filter element and then discharged by the suction cylinder body and the suction pipe. The raw material dust is filtered by the filter element, and a considerable part of the dust adheres to the outside of the filter element. After the raw material extraction is completed, the vacuum pump stops working. At this time, the pressure on the upper and lower sides of the piston in the suction cylinder body gradually balances, and the air thrust maintaining the piston upward gradually disappears. The compression spring resets and elongates, driving the follower plate to move downward. The follower plate drives the sliding column to move downward relative to the bottom of the filter element installation cylinder, and also drives the cleaning bracket and the annular cleaning brush to move downward relative to the filter element. The annular cleaning brush cleans the dust adhering to the outside of the filter element, and these dusts fall into the vacuum suction bin. Thus, by means of the action of the air pressure when the vacuum pump works, the annular cleaning brush is driven to move upward, and after the vacuum pump stops working, the cleaning work of the filter element is realized without additional power components, and the electric energy is also saved to a certain extent.

[0010] Furthermore, the dust reduction mechanism for the convergence of the raw materials in the middle includes a raw material guiding cylinder, a conical cover, a support rod and a guiding spiral blade. A vertical raw material guiding cylinder is installed in the middle of the vacuum suction bin through a support rod. The top of the raw material guiding cylinder is integrally formed and connected with a conical cover. One end of the suction pipe located in the vacuum suction bin is connected to the feeding hole at the rear side of the top of the raw material guiding cylinder. A guiding spiral blade is arranged inside the raw material guiding cylinder.

[0011] Since the centerlines of the feeding holes are distributed along the tangential direction of the inner wall of the raw material guiding cylinder, the raw materials and air entering the raw material guiding cylinder from the suction pipe form a vortex in the raw material guiding cylinder. The centrifugal force of the vortex causes the raw materials to rotate along the inner wall of the raw material guiding cylinder. Also, due to the self-gravity of the raw materials, the raw materials move in a clockwise spiral downward trajectory in the raw material guiding cylinder. Among them, the guiding spiral blades guide the movement of the raw materials in the raw material guiding cylinder. Finally, the raw materials are discharged from the bottom of the raw material guiding cylinder and fall to the bottom of the vacuum suction bin. At this time, compared with directly falling from the middle of the vacuum suction bin to the bottom of the vacuum suction bin, the drop of the raw materials from the bottom of the raw material guiding cylinder to the bottom of the vacuum suction bin has been reduced, and the airflow is more dispersed in the annular space between the vacuum suction bin and the raw material guiding cylinder. The dust in the raw materials is less likely to be lifted by the upward airflow in the vacuum suction bin, reducing the demand for the filtration of the filter element. At the same time, the friction between the raw materials and the upper side of the guiding spiral blades will also reduce the speed of the raw materials entering the vacuum suction bin, reduce the impact force of the raw materials falling to the bottom of the vacuum suction bin, and also reduce dust emission.

[0012] Furthermore, it also includes a self-weight lifting hopper mechanism. The self-weight lifting hopper mechanism includes a bin, a conical hopper, a seat ring, fixed rods, and a self-weight elastic lifting component. Four fixed rods are arranged in a circular array on the upper side of the seat ring. The tops of the four fixed rods are installed with a bin through the self-weight elastic lifting component. The bottom of the bin is fixedly connected with a conical hopper. The bottom of the conical hopper is connected to one end of the suction pipe away from the vacuum suction bin. A feeding air inlet guiding mechanism is installed in the bin. The seat ring and the fixed rods serve as the bottom frame for supporting the bin. When the bin and the conical hopper are filled with raw materials to be fed, at this time, the bin and the conical hopper are heavier, and the self-weight elastic lifting component is compressed, so the bin and the conical hopper descend, and the annular gap between the bottom of the feeding air inlet guiding mechanism and the inner side of the conical hopper increases, which will not affect the external air intake flowing into the conical hopper to suck away the raw materials when there are more raw materials. When the raw materials in the bin and the conical hopper are almost sucked out, the self-weight elastic lifting component resets and rises, the bin and the conical hopper rise, and the annular gap between the inner side of the conical hopper and the bottom of the feeding air inlet guiding mechanism shrinks, and the air flow velocity at the annular gap increases, which can blow off the raw materials attached to the side wall of the conical hopper, so that the raw materials attached to the side wall of the conical hopper quickly fall to the center of the bottom of the conical hopper and are quickly sucked away, thoroughly extracting the raw materials in the conical hopper, and there is no need for an additional vibration motor or pneumatic hammer to vibrate the conical hopper to prompt the raw materials attached to the side wall of the conical hopper to fall to the bottom of the conical hopper.

[0013] Further, the self-weight elastic lifting assembly includes a telescopic rod, a lifting spring, and a support ring. The outer side of the top of the conical hopper is fixedly sleeved with a support ring. The tops of the four fixed rods are respectively fixedly connected to the bottoms of the four telescopic rods. The tops of the four telescopic rods are all fixedly connected to the support ring, and a lifting spring is sleeved on each telescopic rod. The silo and the conical hopper are filled with raw materials to be fed. At this time, the silo and the conical hopper are heavier, the lifting springs are compressed, the telescopic rods are shortened, and the support ring, the silo, and the conical hopper descend relative to the feeding and air inlet guiding mechanism. At this time, the annular gap between the bottom of the feeding and air inlet guiding mechanism and the inner side of the conical hopper increases. When the raw materials in the silo and the conical hopper are extracted and reduced, the lifting springs gradually reset and elongate, driving the telescopic rods to elongate, and the support ring, the silo, and the conical hopper rise relative to the feeding and air inlet guiding mechanism, and the annular gap between the bottom of the feeding and air inlet guiding mechanism and the inner side of the conical hopper decreases.

[0014] Further, the feeding and air inlet guiding mechanism includes a feeding guiding cylinder and a conical flow guiding cylinder. A feeding guiding cylinder is arranged in the silo. The filling port at the top of the feeding guiding cylinder is threadedly connected with a cylinder cover. The top of the feeding guiding cylinder is fixedly connected to the top of the fixed rod through a bent rod. An annular air inlet cavity is arranged between the inner side of the silo and the outer side of the feeding guiding cylinder. An annular air inlet filtering component is installed on the outer side of the top of the feeding guiding cylinder. The outer peripheral side of the air inlet filtering component is vertically slidably connected with the inner side of the silo. The bottom of the feeding guiding cylinder is integrally formed with a conical flow guiding cylinder. A plurality of limiting convex points are annularly arranged at the position corresponding to the bottom end of the conical flow guiding cylinder on the inner wall of the conical hopper. The bent rod fixes the feeding guiding cylinder on the fixed rod. Therefore, the height of the feeding guiding cylinder will not change with the amount of raw materials in the silo and the conical hopper. Open the cylinder cover, and raw materials to be fed can be added into the silo and the conical hopper through the filling port at the top of the feeding guiding cylinder, and then cover the cylinder cover. At this time, the silo and the conical hopper are heavier, the lifting springs are compressed, the telescopic rods are shortened, and the support ring, the silo, and the conical hopper descend relative to the feeding guiding cylinder. The annular gap between the bottom of the conical flow guiding cylinder and the inner side of the conical hopper increases, preventing the raw materials in the silo and the conical hopper from blocking the annular gap and affecting the air inlet efficiency. When there are more raw materials in the conical hopper, the larger annular gap will not hinder a large amount of external air from entering the conical hopper, promoting the rapid and stable extraction of raw materials. When the raw materials in the silo and the conical hopper are extracted and reduced, the lifting springs gradually reset and elongate, driving the telescopic rods to elongate, and the support ring, the silo, and the conical hopper rise relative to the feeding and air inlet guiding mechanism. The annular gap between the bottom of the conical flow guiding cylinder and the inner side of the conical hopper decreases, and the air flow velocity at the annular gap increases, which can blow off the raw materials attached to the side wall of the conical hopper, allowing the raw materials attached to the side wall of the conical hopper to quickly fall into the center of the bottom of the conical hopper and then be quickly sucked away.

[0015] Further, it further includes a misaligned diversion mechanism for pharmaceutical raw materials. The misaligned diversion mechanism for pharmaceutical raw materials includes a first flange, an upper hemispherical shell, a lower hemispherical shell, a movable spherical shell, a top through groove, an anti-blocking groove, and a distance-adjustable conveying assembly. The bottom end of the air lock is connected to the top of the upper hemispherical shell through the first flange, and the bottom of the upper hemispherical shell is connected to the top of the lower hemispherical shell. A circular through groove is provided at the bottom of the lower hemispherical shell. The upper hemispherical shell and the lower hemispherical shell form a fixed spherical shell. A movable spherical shell is fitted and installed inside the fixed spherical shell. A top through groove is provided at the center of the top of the movable spherical shell, and a plurality of anti-blocking grooves are annularly arranged on the circumferential side of the top of the movable spherical shell. The bottom of the movable spherical shell is connected with a distance-adjustable conveying assembly. The extraction of pharmaceutical raw materials into the vacuum suction bin only completes the preliminary work of feeding. The pharmaceutical raw materials still need to be added to other pharmaceutical equipment. Since the pharmaceutical equipment in the pharmaceutical workshop is large, the vacuum suction bin cannot be accurately arranged directly above the pharmaceutical equipment, and the vertical positions of the vacuum suction bin and the pharmaceutical equipment will be misaligned. At this time, if a hose is used to connect the bottom of the air lock to the addition port of the pharmaceutical equipment, if the pharmaceutical raw materials are powdery with poor fluidity, using an easily bendable hose will result in low efficiency of adding pharmaceutical raw materials. Therefore, a misaligned diversion mechanism for pharmaceutical raw materials is provided. The movable spherical shell can move inside the fixed spherical shell formed by the upper hemispherical shell and the lower hemispherical shell, thereby changing the orientation of the distance-adjustable conveying assembly at the bottom of the movable spherical shell. The distance of the distance-adjustable conveying assembly is adjustable. The bottom end of the distance-adjustable conveying assembly is connected to the addition port of the pharmaceutical equipment. Due to the cooperation of the movable spherical shell and the fixed spherical shell and the use of the distance-adjustable conveying assembly, it can adapt to the situation where the vertical positions of the vacuum suction bin and the addition port of the pharmaceutical equipment are misaligned, with good adaptability. When adding pharmaceutical raw materials, the vacuum pump stops working, and the air lock releases the raw materials at the bottom of the vacuum suction bin into the fixed spherical shell. The raw materials enter the distance-adjustable conveying assembly through the top through groove and the anti-blocking grooves, and the pharmaceutical raw materials are injected into the addition port of the pharmaceutical equipment through the distance-adjustable conveying assembly. In order to promote the falling of the raw materials, a vibration motor can be provided on the misaligned diversion mechanism for pharmaceutical raw materials.

[0016] Further, the distance-adjustable conveying assembly includes a diversion cylinder, an extension cylinder, a hose, and a second flange. The bottom of the movable spherical shell passes through the circular through groove and is connected to the top end of the diversion cylinder. The outer side of the bottom end of the diversion cylinder is slidably connected to the top end of the extension cylinder. The bottom end of the extension cylinder is connected to one end of the hose, and the other end of the hose is connected with a second flange. And the diversion cylinder is connected to the extension cylinder through a sliding anti-disengagement assembly. The extension cylinder slides relative to the diversion cylinder, and the length of the conveying pipeline formed by the diversion cylinder and the extension cylinder can be adjusted. The setting of the anti-disengagement assembly prevents the extension cylinder from detaching from the diversion cylinder. The length of the hose is very short, less than ten centimeters, and it will not overly affect the falling of the raw materials due to excessive friction. The setting of the hose facilitates the alignment and installation of the second flange with the addition port of the pharmaceutical equipment.

[0017] Compared with the prior art, the beneficial effects of the present feeding device for pharmaceutical use are: 1. Since the raw materials sucked through the suction pipe under negative pressure first enter the dust reduction mechanism in the middle of the raw materials, an air vortex is formed in the dust reduction mechanism in the middle of the raw materials. Due to the centrifugal force, the raw materials rotate along the inner wall of the dust reduction mechanism in the middle of the raw materials and gradually descend, promoting the sedimentation of the powder in the raw materials to the bottom of the vacuum suction bin. The drop of the raw materials when falling from the bottom of the dust reduction mechanism in the middle of the raw materials to the bottom of the vacuum suction bin also becomes smaller, and the drop is smaller than that of directly falling from the middle of the vacuum suction bin to the bottom of the vacuum suction bin, which is beneficial to reducing the amount of dust raised when the raw materials fall and avoiding the filter element from being blocked too quickly. 2. When the vacuum pump starts to work, the suction pipe and the inside of the suction cylinder body are first in a negative pressure state. The negative pressure in the suction cylinder body will drive the piston to move upward in the suction cylinder body. At this time, the annular cleaning brush is located at the top of the filter element. At this time, the external raw materials enter the vacuum suction bin along with the air flow through the suction pipe. The dust in the air flow is filtered by the filter element and then discharged by the suction cylinder body and the suction pipe. The raw material dust is filtered by the filter element. After the raw material extraction is completed, the vacuum pump stops working. At this time, the pressure on the upper and lower sides of the piston in the suction cylinder body gradually balances, and the cleaning bracket and the annular cleaning brush move downward relative to the filter element. The annular cleaning brush cleans the dust attached to the outside of the filter element, and these dusts fall into the vacuum suction bin. Thus, by means of the action of the air pressure when the vacuum pump works, the annular cleaning brush is driven to move upward, and the cleaning work of the filter element is realized after the vacuum pump stops working, without additional power components, and it will also save electric energy to a certain extent.

[0018] 3. The suction pipe sucks the raw materials from the center of the bottom of the conical hopper. When the raw materials in the conical hopper decrease, the annular gap between the inner wall of the conical hopper and the bottom of the conical guide cylinder shrinks, and the air flow velocity at the annular gap increases, which can blow off the raw materials attached to the side wall of the conical hopper, so that the raw materials attached to the side wall of the conical hopper quickly fall into the center of the bottom of the conical hopper and are quickly sucked away, and the raw materials in the conical hopper are extracted thoroughly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the feeding device for pharmaceutical use of the present invention; Figure 2 For the present invention Figure 1 is a partially enlarged structural diagram at A in Figure 3 is a schematic top view structural diagram of the feeding device for pharmaceutical use of the present invention; Figure 4 For the present invention Figure 3 is a sectional structural diagram at B in Figure 5 For the present invention Figure 4 is a partially enlarged structural diagram at C in Figure 6 For the present invention Figure 4 is a partially enlarged structural diagram at D in Figure 7 For the present invention Figure 4 Schematic diagram of the enlarged partial structure at position E in the present invention; Figure 8 For the present invention Figure 4 Schematic diagram of the enlarged partial structure at position F in the present invention; Figure 9 For the present invention Figure 4 Schematic diagram of the enlarged partial structure at position G in the present invention; Figure 10 Schematic diagram of the partial structure of the feeding device for pharmaceutical manufacturing of the present invention; Figure 11 For the present invention Figure 10 Schematic diagram of the upward view structure; In the figure: 1 - Pharmaceutical material suction mechanism, 11 - Vacuum suction bin, 12 - Filter element installation cylinder, 13 - Supporting installation ring, 14 - Bin cover, 15 - Fixed ring, 16 - Air lock, 17 - Suction pipe, 18 - Vacuum pump, 19 - Suction cylinder body, 110 - Filter element, 111 - Suction pipe, 2 - Filter element follow-up cleaning mechanism, 21 - Slide column, 22 - Cleaning support, 23 - Ring-shaped cleaning brush, 24 - Fixed sealing ring, 25 - Conical sealing ring, 26 - Follow-up plate, 27 - Spring installation sleeve 1, 28 - Compression spring, 29 - Follow-up piston column, 210 - Piston, 211 - Spring installation sleeve 2, 212 - Side branch pipe, 213 - Dust-proof plate, 3 - Middle raw material converging and dust-reducing mechanism, 31 - Raw material guiding cylinder, 32 - Conical cover, 33 - Support rod, 34 - Guiding spiral blade, 4 - Self-weight lifting hopper mechanism, 41 - Hopper, 42 - Conical hopper, 43 - Seat ring, 44 - Fixed rod, 45 - Telescopic rod, 46 - Lifting spring, 47 - Support ring, 5 - Feeding air inlet guiding mechanism, 51 - Bent rod, 52 - Feeding guiding cylinder, 53 - Cylinder cover, 54 - Conical guiding cylinder, 55 - Limit bump, 6 - Air inlet filtering component, 61 - Ring-shaped filter screen frame, 62 - Ring-shaped filter screen, 7 - Pharmaceutical raw material dislocation guiding mechanism, 71 - Flange 1, 72 - Upper hemispherical shell, 73 - Lower hemispherical shell, 74 - Movable spherical shell, 75 - Top through groove, 76 - Anti-blocking groove, 77 - Guiding cylinder, 78 - Anti-detachment side groove, 79 - Nut sleeve, 710 - Wing bolt, 711 - Extension cylinder, 712 - Hose, 713 - Flange 2. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0021] Example 1, please refer to Figures 1 to 11, this embodiment provides a technical solution: a feeding device for pharmaceutical manufacturing, including a pharmaceutical suction mechanism 1. The pharmaceutical suction mechanism 1 includes a vacuum suction bin 11, a filter element installation cylinder 12, a supporting installation ring 13, a bin cover 14, a rotary air lock 16, a filter element 110, and a suction pipe 111. Inside the top of the vacuum suction bin 11, a filter element installation cylinder 12 is installed. At the top edge of the filter element installation cylinder 12, a supporting installation ring 13 is provided. The supporting installation ring 13 is placed and installed on the top edge of the vacuum suction bin 11. The bottom of the filter element installation cylinder 12 is closed. Multiple filter elements 110 are inserted through the bottom of the filter element installation cylinder 12. The specific number of the filter elements 110 can be selected according to requirements. A bin cover 14 is installed on the top of the vacuum suction bin 11. The edge of the bin cover 14 is located above the supporting installation ring 13. Both the bin cover 14 and the supporting installation ring 13 are fixed to the top of the vacuum suction bin 11 by bolts distributed in a circular array. The bottom of the vacuum suction bin 11 is of a conical structure. The bottom diameter of the vacuum suction bin 11 is smaller than the middle diameter. And a rotary air lock 16 is installed at the bottom of the vacuum suction bin 11. The left side in the middle of the vacuum suction bin 11 is connected to the end of the suction pipe 111.

[0022] The pharmaceutical suction mechanism 1 further includes an air suction pipe 17, a vacuum pump 18, and an air suction cylinder body 19. The center of the bin cover 14 is fixedly connected to the bottom end of the air suction cylinder body 19. The top end of the air suction cylinder body 19 is connected to the air inlet of the vacuum pump 18 through the air suction pipe 17. When the vacuum pump 18 works, the air inside the bin cover 14 is pumped into a negative pressure state through the air suction pipe 17 and the air suction cylinder body 19, making the inside of the vacuum suction bin 11 in a negative pressure state or a state close to vacuum. At this time, the external raw materials enter the vacuum suction bin 11 along with the air flow through the suction pipe 111. Among them, the air suction cylinder body 19 is used for cooperative installation with the negative pressure follow-up control component.

[0023] The pharmaceutical suction mechanism 1 further includes a fixing ring 15. The fixing ring 15 is fixedly sleeved outside the vacuum suction bin 11. With the help of the fixing ring 15 and installation bolts, the vacuum suction bin 11 can be installed at the required position.

[0024] It further includes a filter element follow-up cleaning mechanism 2 and a raw material middle convergence dust reduction mechanism 3.

[0025] The filter element follow-up cleaning mechanism 2 includes a negative pressure follow-up control component and a filter element cleaning component. The filter element cleaning component is installed on the filter element installation cylinder 12. The filter element cleaning component is connected to the negative pressure follow-up control component. The top of the negative pressure follow-up control component is slidably connected to the inside of the air suction cylinder body 19.

[0026] The filter element cleaning assembly includes sliding columns 21, a cleaning bracket 22, an annular cleaning brush 23, a fixed sealing ring 24, a conical sealing ring 25 and a follower plate 26. Two sliding columns 21 are vertically and slidably installed in two sliding holes at the bottom of the filter element installation cylinder 12 respectively. The bottom ends of the two sliding columns 21 are fixedly connected to the cleaning bracket 22. The cleaning bracket 22 is respectively installed with annular cleaning brushes 23 that cooperate with the outer peripheral sides of the respective filter elements 110. The top ends of the two sliding columns 21 are respectively fixedly connected to both ends of the follower plate 26 by screws. At the positions corresponding to the sliding columns 21 on the bottom surface of the filter element installation cylinder 12, a fixed sealing ring 24 is fixedly connected. An annular groove is opened at the bottom of the fixed sealing ring 24. At the positions corresponding to the sliding columns 21 on the top surface of the cleaning bracket 22, a conical sealing ring 25 is fixedly connected. The top diameter of the conical sealing ring 25 is smaller than the bottom diameter. The annular groove and the conical sealing ring 25 are arranged vertically corresponding to each other. Both the fixed sealing ring 24 and the conical sealing ring 25 are made of rubber material.

[0027] The negative pressure follow-up control assembly includes a compression spring 28, a follow-up piston column 29, a piston 210 and a side branch pipe 212. The bottom end of the follow-up piston column 29 is fixedly connected to the center of the top of the follower plate 26. The top end of the follow-up piston column 29 is installed with a piston 210. The piston 210 is slidably connected to the inner side of the suction cylinder block 19. The center of the top of the follower plate 26 is connected to the bottom end of the compression spring 28. The top end of the compression spring 28 is connected to the center of the inner top of the cover 14. The middle side of the suction cylinder block 19 is connected to one end of the side branch pipe 212. The other end of the side branch pipe 212 is connected to the top side of the suction cylinder block 19.

[0028] The negative pressure follow-up control assembly further includes a spring installation sleeve one 27 and a spring installation sleeve two 211. A spring installation sleeve one 27 is fixedly connected to the upper side of the follower plate 26. A spring installation sleeve two 211 is fixedly connected to the inner top of the cover 14. The spring installation sleeve one 27, the spring installation sleeve two 211 and the centers of the sliding columns 21 are arranged to coincide. The top end of the compression spring 28 is connected to the spring installation sleeve two 211, and the bottom end of the compression spring 28 is connected to the spring installation sleeve one 27. The settings of the spring installation sleeve one 27 and the spring installation sleeve two 211 make the installation of the compression spring 28 more stable.

[0029] When the vacuum pump 18 starts to work, the suction pipe 17 and the inside of the suction cylinder block 19 are first in a negative pressure state. The negative pressure inside the suction cylinder block 19 drives the piston 210 to move upward inside the suction cylinder block 19. The piston 210 drives the follower plate 26 to move upward through the follower piston column 29. The follower plate 26 drives the sliding column 21 to move upward relative to the bottom of the filter element installation cylinder 12, and also drives the cleaning support 22 and the annular cleaning brush 23 to move upward. At this time, the compression spring 28 is compressed. When the bottom surface of the piston 210 is higher than the bottom end of the side branch pipe 212 inside the suction cylinder block 19, the air inside the bin cover 14 will first enter the area below the piston 210 inside the suction cylinder block 19, then pass through the side branch pipe 212 and enter the top of the suction cylinder block 19, and finally be sucked away by the vacuum pump 18 through the suction pipe 17. The vacuum pump 18 maintains stable operation, the height of the piston 210 inside the suction cylinder block 19 remains stable, and the air flow also stably passes through the side branch pipe 212. At this time, the annular cleaning brush 23 is located at the top of the filter element 110. The top of the conical sealing ring 25 cooperates with the annular groove at the bottom of the fixed sealing ring 24 to prevent the air flow containing dust from passing through the gap between the filter element installation cylinder 12 and the sliding column 21, thereby preventing the air flow containing raw material dust from bypassing the filter element 110 and damaging the vacuum pump 18, avoiding the loss of raw materials being discharged, and also preventing the raw material dust from being discharged into the working environment and polluting the working environment. The external raw materials enter the vacuum suction bin 11 through the suction pipe 111 along with the air flow. The dust in the air flow is filtered by the filter element 110 and then discharged by the suction cylinder block 19 and the suction pipe 17. The raw material dust is filtered by the filter element 110, and a considerable part of the dust adheres to the outside of the filter element 110. After the raw material extraction is completed, the vacuum pump 18 stops working. At this time, the pressure on the upper and lower sides of the piston 210 inside the suction cylinder block 19 gradually balances, and the air thrust maintaining the piston 210 upward gradually disappears. The compression spring 28 resets and elongates, driving the follower plate 26 to move downward. The follower plate 26 drives the sliding column 21 to move downward relative to the bottom of the filter element installation cylinder 12, and also drives the cleaning support 22 and the annular cleaning brush 23 to move downward relative to the filter element 110. The annular cleaning brush 23 cleans the dust adhering to the outside of the filter element 110, and these dusts fall into the vacuum suction bin 11. Thus, by means of the action of the air pressure when the vacuum pump 18 works, the annular cleaning brush 23 is driven to move upward, and the cleaning work of the filter element 110 is realized after the vacuum pump 18 stops working, without additional power components, and also saves electric energy to a certain extent.

[0030] The filter element follow-up cleaning mechanism 2 further includes a dust baffle 213. A circular dust baffle 213 is installed on the cleaning support 22. A circular through hole corresponding to the annular cleaning brush 23 is provided on the dust baffle 213. The outer peripheral side of the dust baffle 213 is vertically slidably connected to the inner wall of the vacuum suction bin 11. When the vacuum pump 18 stops working, the cleaning support 22 and the annular cleaning brush 23 move downward relative to the filter element 110, and the annular cleaning brush 23 cleans the dust attached to the outside of the filter element 110. The fallen dust will fill the bottom of the vacuum suction bin 11. The provided dust baffle 213 can prevent a large amount of dust from diffusing upward and adhering to the filter element 110 again.

[0031] The raw material central converging dust reduction mechanism 3 is installed in the middle of the vacuum suction bin 11. The end of the suction pipe 111 extends into the vacuum suction bin 11 and is connected to the raw material central converging dust reduction mechanism 3.

[0032] The raw material central converging dust reduction mechanism 3 includes a raw material guiding cylinder 31, a conical cover 32, a support rod 33, and a guiding spiral blade 34. A vertical raw material guiding cylinder 31 is installed in the middle of the vacuum suction bin 11 through the support rod 33. A conical cover 32 is integrally formed and connected to the top of the raw material guiding cylinder 31. One end of the suction pipe 111 located in the vacuum suction bin 11 is connected to the feed hole at the rear side of the top of the raw material guiding cylinder 31. The center line of the feed hole is distributed along the tangent direction of the inner wall of the top of the raw material guiding cylinder 31. A guiding spiral blade 34 is arranged inside the raw material guiding cylinder 31. The guiding spiral blade 34 is a spiral blade spiraling downward clockwise, and the included angle between the vertical cross-section at any position of the guiding spiral blade 34 and the center line of the raw material guiding cylinder 31 is 30 degrees to 50 degrees. The centers of the vacuum suction bin 11 and the raw material guiding cylinder 31 coincide.

[0033] Since the center lines of the feed holes are distributed along the tangential direction of the inner wall of the raw material guiding cylinder 31, the raw materials and air entering the raw material guiding cylinder 31 from the suction pipe 111 form a vortex in the raw material guiding cylinder 31. The centrifugal force of the vortex causes the raw materials to rotate along the inner wall of the raw material guiding cylinder 31. Also due to the self-gravity of the raw materials, the raw materials move in a clockwise spiral downward trajectory in the raw material guiding cylinder 31. Among them, the guiding spiral blades 34 guide the movement of the raw materials in the raw material guiding cylinder 31. Finally, the raw materials are discharged from the bottom of the raw material guiding cylinder 31 and fall to the bottom inside the vacuum suction bin 11. At this time, compared with directly falling from the middle of the vacuum suction bin 11 to the bottom of the vacuum suction bin 11, the drop of the raw materials from the bottom of the raw material guiding cylinder 31 to the bottom of the vacuum suction bin 11 has been reduced, and the air flow is more dispersed in the annular space between the vacuum suction bin 11 and the raw material guiding cylinder 31. The dust in the raw materials is less likely to be lifted by the upward air flow inside the vacuum suction bin 11, reducing the demand for filtering by the filter element 110. At the same time, the friction force between the raw materials and the upper side of the guiding spiral blades 34 will also reduce the speed of the raw materials entering the vacuum suction bin 11, reduce the impact force of the raw materials falling to the bottom inside the vacuum suction bin 11, and also reduce dust emission.

[0034] During use, the air lock 16 is of a pressure-resistant type. The air lock 16 is used to seal the bottom of the vacuum suction bin 11, and the air at the top inside the vacuum suction bin 11 is pumped away, making the top inside the vacuum suction bin 11 in a negative pressure state, or in a state close to vacuum. External air enters the middle part inside the vacuum suction bin 11 through the suction pipe 111, and then is pumped to the outside of the vacuum suction bin 11 after being filtered by the filter element 110. At this time, the end of the suction pipe 111 far away from the vacuum suction bin 11 is extended into the hopper mechanism, and the raw materials in the hopper mechanism will enter the suction pipe 111 along with the air flow, and then the raw materials enter the vacuum suction bin 11. Due to gravity, the raw materials will fall to the bottom inside the vacuum suction bin 11. The dust raised when the raw materials fall will approach the filter element 110 along with the air flow, and the dust is filtered by the filter element 110. When the inside of the vacuum suction bin 11 is pumped to a negative pressure, the negative pressure will also drive the negative pressure follow-up control component to move upward. The negative pressure follow-up control component drives the filter element cleaning component to move upward relative to the vacuum suction bin 11 and the filter element 110 until the filter element cleaning component corresponds to the top of the filter element 110. A large amount of the dust filtered by the filter element 110 will remain on the outer peripheral side of the filter element 110. When the pumping of the negative pressure in the vacuum suction bin 11 stops, the negative pressure follow-up control component no longer moves upward under the action of the negative pressure. At this time, the negative pressure follow-up control component drives the filter element cleaning component to move downward to reset. During the downward movement of the filter element cleaning component, the dust on the outer peripheral side of the filter element 110 will be cleaned, and the dust will fall to the bottom inside the vacuum suction bin 11. In order to reduce the dust raised when the raw materials fall in the vacuum suction bin 11 from approaching the filter element 110 along with the air flow, causing the filter element 110 to be quickly blocked, and to avoid excessive load when pumping the negative pressure in the vacuum suction bin 11, a raw material central converging dust reduction mechanism 3 is provided. When the suction pipe 111 pumps the raw materials into the vacuum suction bin 11, the raw materials first enter the raw material central converging dust reduction mechanism 3, and an air vortex is formed in the raw material central converging dust reduction mechanism 3. The air vortex is beneficial to the settlement of the powder in the raw materials to the center of the bottom inside the vacuum suction bin, which is beneficial to reducing the dust raised when the raw materials fall in the vacuum suction bin 11. The reduction of the raised dust will also delay the blocking speed of the filter element 110 by the dust, improve the service life of the filter element 110, and is beneficial to reducing the replacement frequency of the filter element 110.

[0035] Embodiment 2. Please refer to Figures 1 to 11 , this embodiment provides a technical solution: a feeding device for pharmaceutical use. The structure of this embodiment is roughly the same as that of Embodiment 1, and the difference lies in: There is also a self-weight lifting hopper mechanism 4, a feeding and air intake guiding mechanism 5, and an air intake filtering component 6. The self-weight lifting hopper mechanism 4 includes a silo 41, a conical hopper 42, a seat ring 43, a fixing rod 44, and a self-weight elastic lifting component. Four fixing rods 44 are arranged in an annular array on the upper side of the seat ring 43. The tops of the four fixing rods 44 are installed with a silo 41 through the self-weight elastic lifting component. The bottom of the silo 41 is fixedly connected with a conical hopper 42. The bottom diameter of the conical hopper 42 is smaller than the top diameter. The bottom of the conical hopper 42 is connected to one end of the suction pipe 111 away from the vacuum suction bin 11. A feeding and air intake guiding mechanism 5 is installed in the silo 41.

[0036] The seat ring 43 and the fixing rod 44 serve as the bottom frame for supporting the silo 41. When the silo 41 and the conical hopper 42 are filled with raw materials to be fed, at this time, the silo 41 and the conical hopper 42 are heavier, and the self-weight elastic lifting component is compressed. The silo 41 and the conical hopper 42 descend, and the annular gap between the bottom of the feeding and air intake guiding mechanism 5 and the inner side of the conical hopper 42 increases. When there is a large amount of raw materials, it will not affect the external air intake flowing into the conical hopper 42 to suck away the raw materials. When the raw materials in the silo 41 and the conical hopper 42 are almost emptied, the self-weight elastic lifting component resets and rises, the silo 41 and the conical hopper 42 rise, and the annular gap between the inner side of the conical hopper 42 and the bottom of the feeding and air intake guiding mechanism 5 decreases. The air flow velocity at the annular gap increases, which can blow off the raw materials attached to the side wall of the conical hopper 42, so that the raw materials attached to the side wall of the conical hopper 42 quickly fall into the center of the inner bottom of the conical hopper 42 and are quickly sucked away, thoroughly extracting the raw materials in the conical hopper 42, and there is no need for an additional vibration motor or pneumatic hammer to vibrate the conical hopper 42 to prompt the raw materials attached to the side wall of the conical hopper 42 to fall into the inner bottom of the conical hopper 42.

[0037] The self-weight elastic lifting component includes a telescopic rod 45, a lifting spring 46, and a support ring 47. A support ring 47 is fixedly sleeved on the outer side of the top of the conical hopper 42. The bottom ends of the four fixing rods 44 are respectively fixedly connected to the top ends of the four telescopic rods 45. The top ends of the four telescopic rods 45 are all fixedly connected to the support ring 47, and a lifting spring 46 is sleeved on each telescopic rod 45. When the silo 41 and the conical hopper 42 are filled with raw materials to be fed, at this time, the silo 41 and the conical hopper 42 are heavier, the lifting spring 46 is compressed, the telescopic rod 45 shortens, and the support ring 47, the silo 41, and the conical hopper 42 descend relative to the feeding and air intake guiding mechanism 5. At this time, the annular gap between the bottom of the feeding and air intake guiding mechanism 5 and the inner side of the conical hopper 42 increases. When the raw materials in the silo 41 and the conical hopper 42 are reduced by extraction, the lifting spring 46 gradually resets and elongates, driving the telescopic rod 45 to elongate, and the support ring 47, the silo 41, and the conical hopper 42 rise relative to the feeding and air intake guiding mechanism 5, and the annular gap between the bottom of the feeding and air intake guiding mechanism 5 and the inner side of the conical hopper 42 decreases.

[0038] The feeding and air intake guiding mechanism 5 includes a bent rod 51, a feeding guiding cylinder 52, a cylinder cover 53, a conical flow guiding cylinder 54 and a limiting bump 55. A feeding guiding cylinder 52 is arranged in the bin 41. The filling port at the top of the feeding guiding cylinder 52 is threadedly connected with a cylinder cover 53. The top of the feeding guiding cylinder 52 is fixedly connected to the top of the fixed rod 44 through the bent rod 51. There are two bent rods 51, and the bent rod 51 is fixedly connected to the top of the feeding guiding cylinder 52 by bolts. An annular air intake cavity is arranged between the inner side of the bin 41 and the outer side of the feeding guiding cylinder 52. An annular air intake filtering component 6 is installed on the outer side of the top of the feeding guiding cylinder 52. The outer peripheral side of the air intake filtering component 6 is vertically slidably connected with the inner side of the bin 41. The bottom of the feeding guiding cylinder 52 is integrally formed with a conical flow guiding cylinder 54. The bottom diameter of the conical flow guiding cylinder 54 is smaller than the top diameter.

[0039] A plurality of limiting bumps 55 are annularly arranged at the position corresponding to the bottom end of the conical flow guiding cylinder 54 on the inner wall of the conical hopper 42. The specific number of the limiting bumps 55 is four. The top diameter of the conical flow guiding cylinder 54 is larger than the bottom diameter. The included angle between the hypotenuse of the conical flow guiding cylinder 54 and the central line of the conical flow guiding cylinder 54 is smaller than the included angle between the hypotenuse of the conical hopper 42 and the central line of the conical hopper 42.

[0040] The bent rod 51 fixes the feeding guiding cylinder 52 on the fixed rod 44. Therefore, the height of the feeding guiding cylinder 52 will not change with the amount of raw materials in the bin 41 and the conical hopper 42. Open the cylinder cover 53, and the raw materials to be fed can be added into the bin 41 and the conical hopper 42 through the filling port at the top of the feeding guiding cylinder 52. Then cover the cylinder cover 53. At this time, the bin 41 and the conical hopper 42 are heavier, the lifting spring 46 is compressed, the telescopic rod 45 shortens, and the support ring 47, the bin 41 and the conical hopper 42 descend relative to the feeding guiding cylinder 52. The annular gap between the bottom of the conical flow guiding cylinder 54 and the inner side of the conical hopper 42 increases, avoiding that the raw materials in the bin 41 and the conical hopper 42 block the annular gap and affecting the air intake efficiency. When there are more raw materials in the conical hopper 42, the larger annular gap will not prevent a large amount of external air from entering the conical hopper 42, promoting the raw materials to be quickly and stably sucked away. When the raw materials in the bin 41 and the conical hopper 42 are reduced by extraction, the lifting spring 46 gradually resets and elongates, driving the telescopic rod 45 to elongate. The support ring 47, the bin 41 and the conical hopper 42 rise relative to the feeding and air intake guiding mechanism 5. The annular gap between the bottom of the conical flow guiding cylinder 54 and the inner side of the conical hopper 42 decreases, and the air flow velocity at the annular gap increases, which can blow off the raw materials attached to the side wall of the conical hopper 42, so that the raw materials attached to the side wall of the conical hopper 42 quickly fall into the center of the bottom of the conical hopper 42 and are quickly sucked away.

[0041] Among them, the provision of the limiting bumps 55 prevents the bottom of the conical flow guide cylinder 54 from abutting against the inner bottom of the conical hopper 42, causing the annular gap to disappear and affecting the airflow from entering the conical hopper 42. Therefore, when the conical hopper 42 rises relative to the conical flow guide cylinder 54, when the bottom of the conical flow guide cylinder 54 touches the limiting bumps 55, the annular gap is already in the smallest state, and the conical hopper 42 cannot move further upward close to the bottom of the conical flow guide cylinder 54.

[0042] The air intake filter assembly 6 includes an annular filter screen frame 61 and an annular filter screen 62. The annular filter screen frame 61 is installed on the outer side of the top of the feeding guide cylinder 52. The outer peripheral side of the annular filter screen frame 61 is vertically slidably connected to the inner side of the material bin 41, and the annular filter screen 62 is installed on the annular filter screen frame 61. The annular filter screen 62 can filter the air entering the material bin 41 to prevent external dust from entering the material bin 41 with the airflow and contaminating the pharmaceutical raw materials.

[0043] Embodiment 3, please refer to Figures 1 to 11 , this embodiment provides a technical solution: a feeding device for pharmaceutical production. The structure of this embodiment is substantially the same as that of Embodiment 2, and the difference lies in: The extraction of the pharmaceutical raw materials into the vacuum suction bin 11 only completes the preliminary work of feeding. The pharmaceutical raw materials still need to be added to other pharmaceutical equipment. Since the pharmaceutical equipment in the pharmaceutical workshop is relatively large, the vacuum suction bin 11 cannot be accurately arranged directly above the pharmaceutical equipment, and the vertical positions of the vacuum suction bin 11 and the pharmaceutical equipment will be offset. At this time, if a flexible hose is used to connect the bottom of the air lock 16 to the addition port of the pharmaceutical equipment, if the pharmaceutical raw materials are powdery with poor fluidity, using an easily bendable flexible hose will result in low efficiency of adding the pharmaceutical raw materials. Therefore, a misaligned diversion mechanism 7 for pharmaceutical raw materials is provided.

[0044] The misaligned diversion mechanism 7 for pharmaceutical raw materials includes a flange 71, an upper hemispherical shell 72, a lower hemispherical shell 73, a movable spherical shell 74, a top through groove 75, an anti-blocking groove 76, and a distance-adjustable conveying component. The bottom end of the air lock 16 is connected to the top of the upper hemispherical shell 72 through the flange 71. The bottom of the upper hemispherical shell 72 is connected to the top of the lower hemispherical shell 73. A circular through groove is opened at the bottom of the lower hemispherical shell 73. The upper hemispherical shell 72 and the lower hemispherical shell 73 form a fixed spherical shell, and the movable spherical shell 74 is fitted and installed in the fixed spherical shell. A top through groove 75 is opened at the center of the top of the movable spherical shell 74, and a plurality of anti-blocking grooves 76 are annularly arranged on the circumferential side of the top of the movable spherical shell 74. The bottom of the movable spherical shell 74 is connected to a distance-adjustable conveying component.

[0045] The movable spherical shell 74 can move within the fixed spherical shell formed by the upper hemispherical shell 72 and the lower hemispherical shell 73, thereby changing the orientation of the bottom of the movable spherical shell 74 with respect to the distance-adjustable conveying assembly. The distance of the distance-adjustable conveying assembly is adjustable, and the bottom end of the distance-adjustable conveying assembly is connected to the feeding port of the pharmaceutical equipment. Due to the cooperation between the movable spherical shell 74 and the fixed spherical shell and the use of the distance-adjustable conveying assembly, it can adapt to the situation where the vertical positions of the vacuum feeding bin 11 and the feeding port of the pharmaceutical equipment are misaligned, and has good adaptability.

[0046] When adding pharmaceutical raw materials, the vacuum pump 18 stops working, and the air lock 16 releases the raw materials at the bottom of the vacuum feeding bin 11 into the fixed spherical shell. The raw materials enter the distance-adjustable conveying assembly through the top through slots 75 and the anti-blocking slots 76, and the pharmaceutical raw materials are injected into the feeding port of the pharmaceutical equipment through the distance-adjustable conveying assembly. In order to promote the falling of the raw materials, a vibration motor can be provided on the pharmaceutical raw material misalignment diversion mechanism 7.

[0047] The distance-adjustable conveying assembly includes a diversion cylinder 77, an extension cylinder 711, a hose 712 and a flange II 713. The bottom of the movable spherical shell 74 passes through the round through slot and is connected to the top end of the diversion cylinder 77. The outer bottom end of the diversion cylinder 77 is slidably connected to the top end of the extension cylinder 711. The bottom end of the extension cylinder 711 is connected to one end of the hose 712, and the other end of the hose 712 is connected with a flange II 713, and the diversion cylinder 77 is connected to the extension cylinder 711 through a sliding anti-disengagement assembly. The extension cylinder 711 slides relative to the diversion cylinder 77, and the length of the conveying pipeline formed by the diversion cylinder 77 and the extension cylinder 711 can be adjusted. The setting of the anti-disengagement assembly prevents the extension cylinder 711 from detaching from the bottom end of the diversion cylinder 77. The length of the hose 712 is very short, less than ten centimeters, and will not overly affect the falling of the raw materials due to excessive friction. The setting of the hose 712 facilitates the alignment and installation of the flange II 713 with the feeding port of the pharmaceutical equipment.

[0048] The sliding anti-disengagement assembly includes anti-disengagement side slots 78, screw sleeves 79 and wing bolts 710. Two anti-disengagement side slots 78 are respectively opened on both sides of the diversion cylinder 77. Two screw sleeves 79 are respectively fixedly connected to both sides of the top of the extension cylinder 711. Two wing bolts 710 are respectively threadedly connected into the two screw sleeves 79, and the end parts of the two wing bolts 710 respectively extend into the corresponding anti-disengagement side slots 78. The horizontal position at the bottom end of the anti-disengagement side slot 78 is higher than the bottom end of the diversion cylinder 77. Therefore, once the wing bolt 710 extends into the anti-disengagement side slot 78, the extension cylinder 711 cannot slip off from the bottom end of the diversion cylinder 77.

[0049] Please refer to Figures 1 to 11 , a feeding method for a feeding device for pharmaceutical production, including the following steps: Step 1: Open the cylinder cover 53. The raw materials to be loaded can be added into the silo 41 and the conical hopper 42 through the filling port at the top of the feeding guiding cylinder 52. Then cover the cylinder cover 53. At this time, the silo 41 and the conical hopper 42 are heavier, the lifting spring 46 is compressed, the telescopic rod 45 shortens, and the support ring 47, the silo 41 and the conical hopper 42 descend relative to the feeding guiding cylinder 52, and the annular gap between the bottom of the conical guiding cylinder 54 and the inner side of the conical hopper 42 increases, preventing the raw materials in the silo 41 and the conical hopper 42 from blocking the annular gap and affecting the air intake efficiency.

[0050] Step 2: The air lock 16 seals the bottom of the vacuum suction bin 11, and evacuates the air at the top inside the vacuum suction bin 11, making the top inside the vacuum suction bin 11 in a negative pressure state. The outside air enters the silo 41 after being filtered by the air intake filtering assembly 6. Then the air flow carries the raw materials at the bottom inside the conical hopper 42 into the suction pipe 111 and converges into the dust reduction mechanism 3 in the middle of the raw materials entering the vacuum suction bin 11 through the suction pipe 111.

[0051] Step 3: The raw materials and air entering the raw material guiding cylinder 31 form a vortex inside the raw material guiding cylinder 31. The centrifugal force of the vortex makes the raw materials rotate along the inner wall of the raw material guiding cylinder 31. Also due to the self-gravity of the raw materials, the raw materials move along a clockwise spiral downward trajectory inside the raw material guiding cylinder 31. Among them, the guiding spiral blades 34 guide the movement of the raw materials inside the raw material guiding cylinder 31. Finally, the raw materials are discharged from the bottom of the raw material guiding cylinder 31 and fall to the bottom inside the vacuum suction bin 11, and the dust in the raw materials is not easily lifted by the upward air flow inside the vacuum suction bin 11.

[0052] Step 4: When the raw materials in the silo 41 and the conical hopper 42 are reduced by extraction, the lifting spring 46 gradually resets and elongates, driving the telescopic rod 45 to elongate. The support ring 47, the silo 41 and the conical hopper 42 rise relative to the feeding and air intake guiding mechanism 5, and the annular gap between the bottom of the conical guiding cylinder 54 and the inner side of the conical hopper 42 decreases. The air flow velocity at the annular gap increases, which can blow off the raw materials attached to the side wall of the conical hopper 42, allowing the raw materials attached to the side wall of the conical hopper 42 to quickly fall to the center of the bottom inside the conical hopper 42 and be quickly sucked away.

[0053] Step Five: When the vacuum pump 18 starts to work, the suction pipe 17 and the inside of the suction cylinder block 19 are first in a negative pressure state. The negative pressure in the suction cylinder block 19 drives the piston 210 to move upward in the suction cylinder block 19. The piston 210 drives the follower plate 26 to move upward through the follower piston column 29. The follower plate 26 drives the sliding column 21 to move upward relative to the bottom of the filter element installation cylinder 12, and also drives the cleaning bracket 22 and the annular cleaning brush 23 to move upward. At this time, the compression spring 28 is compressed. When the bottom surface of the piston 210 is higher than the bottom end of the side branch pipe 212 in the suction cylinder block 19, the air in the bin cover 14 will first enter the area below the piston 210 in the suction cylinder block 19, then enter the top of the suction cylinder block 19 through the side branch pipe 212, and finally be drawn away by the vacuum pump 18 through the suction pipe 17. The vacuum pump 18 maintains stable operation, the height of the piston 210 in the suction cylinder block 19 remains stable, and the air flow also stably passes through the side branch pipe 212. At this time, the annular cleaning brush 23 is located at the top of the filter element 110.

[0054] Step Six: The raw materials enter the vacuum suction bin 11 through the raw material central converging dust reduction mechanism 3. The dust in the air flow is filtered by the filter element 110 and then discharged by the suction cylinder block 19 and the suction pipe 17. The raw material dust is filtered by the filter element 110, and a considerable part of the dust adheres to the outer side of the filter element 110.

[0055] Step Seven: After the raw materials are extracted, the vacuum pump 18 stops working. At this time, the pressure on the upper and lower sides of the piston 210 in the suction cylinder block 19 gradually balances, and the air thrust maintaining the piston 210 upward gradually disappears. The compression spring 28 resets and elongates, driving the follower plate 26 to move downward. The follower plate 26 drives the sliding column 21 to move downward relative to the bottom of the filter element installation cylinder 12, and also drives the cleaning bracket 22 and the annular cleaning brush 23 to move downward relative to the filter element 110. The annular cleaning brush 23 cleans the dust adhering to the outer side of the filter element 110, and these dusts fall into the vacuum suction bin 11.

[0056] Step Eight: The air lock 16 releases the raw materials at the bottom of the vacuum suction bin 11 into the fixed spherical shell. The raw materials enter the distance adjustable conveying assembly through the top through groove 75 and the anti-blocking groove 76, and the pharmaceutical raw materials are injected into the adding port of the pharmaceutical equipment through the distance adjustable conveying assembly to complete the feeding work.

[0057] It should be noted that the air lock 16 and the vacuum pump 18 disclosed in the above embodiments are both controlled by an external PLC controller, and the control method adopts the commonly used method in the prior art.

[0058] It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0059] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A feeding device for pharmaceuticals, comprising a pharmaceutical suction mechanism (1), wherein the pharmaceutical suction mechanism (1) comprises a vacuum suction bin (11), a filter element mounting cylinder (12) is mounted on the inner side of the top of the vacuum suction bin (11), a plurality of filter elements (110) are inserted through the bottom of the filter element mounting cylinder (12), a bin cover (14) is mounted on the top of the vacuum suction bin (11), and a fan (16) is mounted on the bottom of the vacuum suction bin (11), the middle left side of the vacuum suction bin (11) is connected to the end of a suction pipe (111), characterized in that: Also includes: The filter element follower cleaning mechanism (2) comprises a negative pressure follower control component and a filter element cleaning component, the filter element cleaning component is installed on the filter element mounting cylinder (12), the filter element cleaning component is connected to the negative pressure follower control component, and the top of the negative pressure follower control component is slidably connected to the inside of the suction cylinder body (19); The raw material middle-portion gathering and dust reduction mechanism (3) is installed in the middle of the vacuum suction bin (11), and the end of the suction pipe (111) extends into the vacuum suction bin (11) and is connected to the raw material middle-portion gathering and dust reduction mechanism (3).

2. The feeding device for pharmaceutical preparation according to claim 1, characterized in that: The pharmaceutical suction mechanism (1) further comprises an air suction pipe (17), a vacuum pump (18) and an air suction cylinder (19); the center of the bin cover (14) is fixedly connected to the bottom end of the air suction cylinder (19), and the top end of the air suction cylinder (19) is connected to the air inlet of the vacuum pump (18) via the air suction pipe (17).

3. The feeding device for pharmaceutical preparation according to claim 2, characterized in that: The filter element cleaning assembly comprises a slide post (21), a cleaning bracket (22), an annular cleaning brush (23), a fixed sealing ring (24), a conical sealing ring (25) and a follower plate (26); two slide posts (21) are respectively vertically slidably mounted in two sliding holes at the bottom of the filter element mounting cylinder (12); the bottom ends of the two slide posts (21) are fixedly connected to the cleaning bracket (22); annular cleaning brushes (23) matched with the outer peripheral sides of each filter element (110) are respectively mounted on the cleaning bracket (22); the tops of the two slide posts (21) are respectively connected to the two ends of the follower plate (26); a fixed sealing ring (24) is fixedly connected to the bottom surface of the filter element mounting cylinder (12) at a position corresponding to the slide post (21); a ring groove is provided at the bottom of the fixed sealing ring (24); and a conical sealing ring (25) is fixedly connected to the top surface of the cleaning bracket (22) at a position corresponding to the slide post (21).

4. The feeding device for pharmaceutical preparation according to claim 3, characterized in that: The negative pressure follower control component comprises a piston (210) and a branch pipe (212); the top center of the follower plate (26) is fixedly connected to the bottom end of the follower piston column (29); the top end of the follower piston column (29) is equipped with a piston (210); the piston (210) is slidably connected to the inner side of the suction cylinder body (19); the top center of the follower plate (26) is connected to the bottom end of the compression spring (28); the top end of the compression spring (28) is connected to the top center of the chamber cover (14); the middle side of the suction cylinder body (19) is connected to one end of the branch pipe (212); and the other end of the branch pipe (212) is connected to the top side of the suction cylinder body (19).

5. The feeding device for pharmaceutical preparation according to claim 1, characterized in that: The raw material middle-portion converging dust reduction mechanism (3) comprises a raw material guide tube (31), a conical cover (32), a support rod (33) and a guide spiral blade (34); a vertical raw material guide tube (31) is installed in the middle of the vacuum suction bin (11) via the support rod (33); the top of the raw material guide tube (31) is integrally formed and connected with the conical cover (32); one end of the suction pipe (111) located in the vacuum suction bin (11) is connected to a feed hole at the rear side of the top of the raw material guide tube (31); and a guide spiral blade (34) is arranged on the inner side of the raw material guide tube (31).

6. The feeding device for pharmaceutical preparation according to claim 1, characterized in that: The invention also comprises a self-weight lifting hopper mechanism (4), wherein the self-weight lifting hopper mechanism (4) comprises a silo (41), a conical hopper (42), a seat ring (43), a fixing rod (44) and a self-weight elastic lifting assembly, wherein four fixing rods (44) are arranged in a circular array on the upper side of the seat ring (43), the tops of the four fixing rods (44) are installed with the silo (41) via the self-weight elastic lifting assembly, the bottom of the silo (41) is fixedly connected with the conical hopper (42), the bottom of the conical hopper (42) is connected with an end of the suction pipe (111) away from the vacuum suction silo (11), and a feeding air intake guide mechanism (5) is installed in the silo (41).

7. The feeding device for pharmaceutical preparation according to claim 6, characterized in that: The self-weight elastic lifting assembly comprises a telescopic rod (45), a lifting spring (46) and a support ring (47); the support ring (47) is fixedly sleeved on the outer side of the top of the conical bucket (42); the tops of the four fixed rods (44) are respectively fixedly connected to the bottom ends of the four telescopic rods (45); the tops of the four telescopic rods (45) are fixedly connected to the support ring (47); and each telescopic rod (45) is sleeved with a lifting spring (46).

8. The feeding device for pharmaceutical preparation according to claim 6, characterized in that: The feeding and air intake guide mechanism (5) comprises a feeding guide cylinder (52) and a conical guide cylinder (54); a feeding guide cylinder (52) is provided in the silo (41); a filling port at the top of the feeding guide cylinder (52) is threadedly connected to a cylinder cover (53); the top of the feeding guide cylinder (52) is fixedly connected to the top of a fixing rod (44) via a bent rod (51); an annular air intake cavity is provided between the inner side of the silo (41) and the outer side of the feeding guide cylinder (52); an annular air intake filter assembly (6) is installed on the outer side of the top of the feeding guide cylinder (52); the outer peripheral side of the air intake filter assembly (6) is vertically slidably connected to the inner side of the silo (41); the bottom of the feeding guide cylinder (52) is integrally formed and connected to the conical guide cylinder (54); and a plurality of limiting protrusions (55) are provided in a circular array on the inner wall of the conical bucket (42) at positions corresponding to the bottom end of the conical guide cylinder (54).

9. The feeding device for pharmaceutical preparation according to claim 1, characterized in that: The invention also comprises a pharmaceutical raw material dislocation flow guiding mechanism (7), wherein the pharmaceutical raw material dislocation flow guiding mechanism (7) comprises a flange 1 (71), an upper hemispherical shell (72), a lower hemispherical shell (73), a movable spherical shell (74), a top through groove (75), an anti-blocking groove (76) and a distance-adjustable conveying assembly. The bottom end of the air shut-off fan (16) is connected to the top of the upper hemispherical shell (72) through the flange 1 (71), the bottom of the upper hemispherical shell (72) is connected to the top of the lower hemispherical shell (73), a round through groove is provided at the bottom of the lower hemispherical shell (73), the upper hemispherical shell (72) and the lower hemispherical shell (73) constitute a fixed spherical shell, the movable spherical shell (74) is installed in the fixed spherical shell, the top center of the movable spherical shell (74) is provided with a top through groove (75), the top peripheral side of the movable spherical shell (74) is provided with a plurality of anti-blocking grooves (76) in a circular array, and the bottom of the movable spherical shell (74) is connected to the distance-adjustable conveying assembly.

10. The feeding device for pharmaceutical preparation according to claim 9, characterized in that: The distance-adjustable conveying assembly comprises a guide tube (77), an extension tube (711), a hose (712) and a second flange (713); the bottom of the movable ball shell (74) passes through the round groove and is connected to the top of the guide tube (77); the outer side of the bottom end of the guide tube (77) is slidably connected to the top of the extension tube (711); the bottom end of the extension tube (711) is connected to one end of the hose (712); the other end of the hose (712) is connected to the second flange (713); and the guide tube (77) is connected to the extension tube (711) via a sliding anti-detachment assembly.

Images