A feeding device for pharmaceutical production

Abstract

The present invention discloses a feeding device for pharmaceuticals, which relates to the technical field of pharmaceutical feeding, including a pharmaceutical suction mechanism, wherein the pharmaceutical suction mechanism includes a vacuum suction bin, a filter element mounting cylinder is installed on the inner side of the top of the vacuum suction bin, and a filter element is inserted through the bottom of the filter element mounting cylinder, the left side of the middle of the vacuum suction bin is connected to the end of the suction pipe, and also includes a filter element follower cleaning mechanism and a raw material middle gathering dust reduction mechanism. In the feeding device for pharmaceuticals, the raw material forms an air vortex in the dust reduction mechanism in the middle of the raw material, which is beneficial to reducing the amount of dust raised when the raw material falls and avoiding the filter element from being blocked too quickly. The cleaning of the filter element does not require additional power components, reducing the use of electric energy. When the raw material in the conical bucket is reduced, the air flow velocity at the annular gap increases to blow off the raw material attached to the side wall of the conical bucket, allowing the raw material attached to the side wall of the conical bucket to quickly fall into the bottom center of the conical bucket and be quickly sucked away.

Description

Technical Field

[0001] The invention relates to the technical field of pharmaceutical feeding, in particular to a feeding device for pharmaceutical feeding. Background Art

[0002] At present, most pharmaceutical raw materials are in granular or powdered form. Vacuum loaders are generally used for conveying pharmaceutical raw materials. Vacuum loaders are dust-free and closed pipeline conveying equipment that uses vacuum suction to convey granular and powdered materials. The pressure difference between the vacuum and the ambient space is used to form gas flow in the pipeline, drive the material flow, and complete the material conveying. This conveying method can eliminate dust pollution and improve the working environment.

[0003] When the vacuum loader in the prior art is in use, the raw materials enter the vacuum suction hopper and easily raise large dust during the falling process, 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 bottom center of the hopper. The raw materials gradually decrease, and the raw materials in the middle of the hopper gradually collapse downward. At this time, a lot of raw materials will adhere to the inner wall of the hopper and cannot slide to the bottom center of the hopper to be sucked away. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a feeding device for pharmaceutical manufacturing. The raw materials are gathered in the middle of the raw materials to form an air vortex in the dust reduction mechanism. Due to 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, which promotes the powder in the raw materials to settle to the bottom of the vacuum suction bin, which is beneficial to reduce the amount of dust raised when the raw materials fall, and avoid the filter element from being blocked too quickly. The cleaning of the filter element does not require additional power components, reducing the use of electric energy. When the raw materials in the conical bucket are reduced, the air flow velocity at the annular gap increases to blow off the raw materials attached to the side wall of the conical bucket, allowing the raw materials attached to the side wall of the conical bucket to quickly fall into the center of the bottom of the conical bucket and be quickly sucked away, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a feeding device for pharmaceuticals, comprising a pharmaceutical suction mechanism, wherein the pharmaceutical suction mechanism includes a vacuum suction bin, a filter element mounting cylinder is installed on the inner side of the top of the vacuum suction bin, and a plurality of filter elements are inserted through the bottom of the filter element mounting cylinder, a bin cover is installed on the top of the vacuum suction bin, and a fan is installed on the bottom of the vacuum suction bin, and the left side of the middle of the vacuum suction bin is connected to the end of the suction pipe, and further comprising:

[0006] The filter element follower cleaning mechanism includes 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. The filter element cleaning component is connected to the negative pressure follower control component. The top of the negative pressure follower control component is slidably connected to the interior of the suction cylinder.

[0007] The dust reduction mechanism for converging the middle of the raw materials is installed in the middle of the vacuum suction bin, and the end of the suction pipe extends into the vacuum suction bin and is connected to the dust reduction mechanism for converging the middle of the raw materials.

[0008] The fan is of pressure-resistant type. The fan is used to seal the bottom of the vacuum suction bin and extract the air from the top of the vacuum suction bin, so that the top of the vacuum suction bin is in a negative pressure state, or in a state close to vacuum. The external air enters the middle of the vacuum suction bin through the suction pipe, and is then filtered by the filter element and pumped to the outside of the vacuum suction bin. At this time, the end of the suction pipe away from the vacuum suction bin is extended into the hopper mechanism, and the raw materials in the hopper mechanism will enter the suction pipe with the airflow, and then the raw materials enter the vacuum suction bin. The raw materials will fall to the bottom of the vacuum suction bin due to gravity. The dust raised when the raw materials fall will approach the filter element with the airflow, and the dust will be filtered by the filter element. When the vacuum suction bin is pumped with negative pressure, the negative pressure will also drive the negative pressure follower control component to move upward, and the negative pressure follower 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 dust filtered by the filter element will remain on the periphery of the filter element. When the vacuum is applied to the material hopper, the dust on the outer periphery of the filter element is cleaned and the dust falls into the bottom of the vacuum hopper. In order to reduce the dust raised by the raw material when falling in the vacuum hopper and approach the filter element with the airflow, so as to avoid excessive load when the vacuum hopper is under negative pressure, a dust reduction mechanism is provided in the middle of the raw material. When the suction pipe draws the raw material into the vacuum hopper, it first enters the dust reduction mechanism in the middle of the raw material, and an air vortex is formed in the dust reduction mechanism in the middle of the raw material. The air vortex is conducive to the powder in the raw material settling to the bottom center of the vacuum hopper, which is conducive to reducing the dust raised when the raw material falls in the vacuum hopper. The reduction of raised dust will also delay the clogging speed of the filter element by the dust, thereby increasing the service life of the filter element and reducing the frequency of filter element replacement.

[0009] Furthermore, the pharmaceutical suction mechanism further includes an air suction pipe, a vacuum pump, and an air suction cylinder. The center of the hopper cover is fixedly connected to the bottom end of the air suction cylinder, and the top end of the air suction cylinder is connected to the air inlet of the vacuum pump via the air suction pipe. When the vacuum pump is in operation, it draws the air inside the hopper cover into a negative pressure state through the air suction pipe and the air suction cylinder, creating a negative pressure state or a near-vacuum state within the vacuum suction hopper. At this time, external raw materials enter the vacuum suction hopper through the air suction pipe and follow the air flow. The air suction cylinder is used to be installed in conjunction with the negative pressure follower control component.

[0010] Furthermore, the filter element cleaning assembly includes a sliding post, a cleaning bracket, an annular cleaning brush, a fixed sealing ring, a conical sealing ring and a follower plate. Two sliding posts are vertically slidably installed in the two sliding holes at the bottom of the filter element mounting cylinder. The bottom ends of the two sliding posts are fixedly connected to the cleaning brackets. Annular cleaning brushes that cooperate with the outer peripheral sides of each filter element are respectively installed on the cleaning brackets. The tops of the two sliding posts are respectively connected to the two ends of the follower plate. The bottom surface of the filter element mounting cylinder is fixedly connected to the position of the sliding post corresponding to the position of the sliding post. The bottom of the fixed sealing ring is provided with an annular groove, and the top surface of the cleaning bracket is fixedly connected to the position of the sliding post corresponding to the position of the conical sealing ring.

[0011] Furthermore, the negative pressure follower control assembly includes a piston and a side branch pipe, the top center of the follower plate is fixedly connected to the bottom end of the follower piston column, the top of the follower piston column is installed with a piston, the piston is slidably connected to the inner side of the suction cylinder body, the top center of the follower plate is connected to the bottom end of the compression spring, the top of the compression spring is connected to the top center of the bin cover, the middle side of the suction cylinder body is connected to one end of the side branch pipe, and the other end of the side branch pipe is connected to the top side of the suction cylinder body.

[0012] When the vacuum pump starts working, the suction pipe and the suction cylinder are first in a negative pressure state. The negative pressure in the suction cylinder will drive the piston to move up in the suction cylinder, and the piston drives the follower plate to move up through the follower piston column. The follower plate drives the sliding column to move up relative to the bottom of the filter element mounting cylinder, and also drives the cleaning bracket and the annular cleaning brush to move up. 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, the air in the bin cover will first enter the area under the piston in the suction cylinder, and then enter the top of the suction cylinder through the side branch pipe, and finally be sucked away by the vacuum pump through the suction pipe. The vacuum pump keeps working stably, the height of the piston in the suction cylinder remains stable, and the airflow also passes steadily through the side branch pipe. 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 airflow containing dust from passing through the gap between the filter element mounting cylinder and the sliding column, thereby preventing the airflow containing raw material dust from bypassing the filter element and damaging the vacuum pump, and preventing the raw material from being discharged. The dust in the air is then sucked away by the suction pipe and the dust in the suction pipe is removed.

[0013] Furthermore, the dust reduction mechanism for converging the middle of the raw materials 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 the support rod. The top of the raw material guiding cylinder is integrally connected with a conical cover. One end of the suction pipe located in the vacuum suction bin is connected to the feed hole on the rear side of the top of the raw material guiding cylinder. A guiding spiral blade is provided on the inner side of the raw material guiding cylinder.

[0014] Since the center line of the feed hole is distributed along the tangent direction of the inner wall of the raw material guide cylinder, the raw material and air entering the raw material guide cylinder from the suction pipe form a vortex in the raw material guide cylinder. The centrifugal force of the vortex causes the raw material to rotate along the inner wall of the raw material guide cylinder. Due to the raw material's own gravity, the raw material moves in a clockwise spiral downward trajectory in the raw material guide cylinder. The guiding spiral blades guide the movement of the raw material in the raw material guide cylinder. Finally, the raw material is discharged from the bottom of the raw material guide cylinder and falls to the bottom of the vacuum suction bin. At this time, compared with falling directly from the middle of the vacuum suction bin to the bottom of the vacuum suction bin, the height difference of the raw material from the bottom of the raw material guide 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 guide cylinder. The dust in the raw material is less likely to be lifted up by the upward airflow in the vacuum suction bin, reducing the need for filtration by the filter element. At the same time, the friction between the raw material and the upper side of the guiding spiral blades will also reduce the speed of the raw material entering the vacuum suction bin, reduce the impact force of the raw material falling to the bottom of the vacuum suction bin, and also reduce dust.

[0015] Furthermore, it also includes a self-weight lifting hopper mechanism, which includes a hopper, a conical hopper, a seat ring, a fixed rod and a self-weight elastic lifting component. The upper annular array of the seat ring is provided with four fixed rods, and the tops of the four fixed rods are installed with a hopper through a self-weight elastic lifting component. The bottom of the hopper is fixedly connected to the conical hopper, and the bottom of the conical hopper is connected to one end of the suction pipe away from the vacuum suction hopper. A feeding and air intake guide mechanism is installed in the hopper. The seat ring and the fixed rod serve as the base frame for supporting the silo. When the silo and the conical bucket are full of raw materials to be loaded, the silo and the conical bucket are heavy, the self-weight elastic lifting component is compressed, the silo and the conical bucket descend, and the annular gap between the bottom of the feeding and air intake guide mechanism and the inner side of the conical bucket increases. When there is a lot of raw materials, it will not affect the external air intake to flow into the conical bucket to extract the raw materials. When the silo and the conical bucket are almost exhausted by the raw materials, the self-weight elastic lifting component resets and rises, the silo and the conical bucket rise, the annular gap between the inner side of the conical bucket and the bottom of the feeding and air intake guide mechanism is reduced, and the air flow speed at the annular gap increases, which can blow off the raw materials attached to the side wall of the conical bucket, so that the raw materials attached to the side wall of the conical bucket quickly fall into the center of the bottom of the conical bucket and are quickly sucked away, so that the raw materials in the conical bucket are thoroughly extracted, and there is no need for an additional vibration motor or air hammer to vibrate the conical bucket to cause the raw materials attached to the side wall of the conical bucket to fall into the bottom of the conical bucket.

[0016] Furthermore, the self-weight elastic lifting assembly includes a telescopic rod, a lifting spring, and a support ring. The support ring is fixedly sleeved on the outer side of the top of the conical bucket. The tops of the four fixed rods are respectively fixedly connected to the bottom ends of the four telescopic rods. The top ends of the four telescopic rods are fixedly connected to the support ring, and each telescopic rod is sleeved with a lifting spring. When the hopper and the conical bucket are filled with raw materials to be loaded, the hopper and the conical bucket are heavy, the lifting spring is compressed, the telescopic rod shortens, and the support ring, hopper, and conical bucket descend relative to the feeding and air intake guide mechanism. At this time, the annular gap between the bottom of the feeding and air intake guide mechanism and the inner side of the conical bucket increases. When the raw materials in the hopper and the conical bucket are withdrawn and reduced, the lifting spring gradually resets and extends, driving the telescopic rod to extend, causing the support ring, hopper, and conical bucket to rise relative to the feeding and air intake guide mechanism, and the annular gap between the bottom of the feeding and air intake guide mechanism and the inner side of the conical bucket to decrease.

[0017] Furthermore, the feeding and air intake guide mechanism includes a feeding guide cylinder and a conical guide cylinder, a feeding guide cylinder is provided in the silo, the filling port on the top of the feeding guide cylinder is threadedly connected to a cylinder cover, the top of the feeding guide cylinder is fixedly connected to the top of the fixing rod by a bent rod, an annular air intake cavity is provided between the inner side of the silo and the outer side of the feeding guide cylinder, an annular air intake filter assembly is installed on the outer side of the top of the feeding guide cylinder, the outer peripheral side of the air intake filter assembly is vertically slidably connected to the inner side of the silo, the bottom of the feeding guide cylinder is integrally formed with a conical guide cylinder, and a plurality of limiting protrusions are provided in a ring array on the inner wall of the conical bucket corresponding to the position of the bottom end of the conical guide cylinder. The bent rod fixes the feeding guide cylinder on the fixed rod, so the height of the feeding guide cylinder will not change with the amount of raw materials in the silo and the conical bucket. Open the cylinder cover and add the raw materials to be loaded into the silo and the conical bucket through the filling port on the top of the feeding guide cylinder. Then close the cylinder cover. At this time, the silo and the conical bucket are heavier, the lifting spring is compressed, the telescopic rod is shortened, the support ring, the silo and the conical bucket are lowered relative to the feeding guide cylinder, and the annular gap between the bottom of the conical guide cylinder and the inner side of the conical bucket is increased to avoid the annular gap being blocked by too much raw materials in the silo and the conical bucket, which affects the air intake efficiency. When there is a lot of raw material in the conical bucket, the larger annular gap will not hinder a large amount of external air from entering the conical bucket, which enables the raw material to be extracted quickly and stably. When the raw material in the hopper and the conical bucket is extracted less, the lifting spring gradually resets and extends, driving the telescopic rod to extend, and the support ring, hopper and conical bucket rise relative to the feeding and air intake guide mechanism. The annular gap between the bottom of the conical guide tube and the inner side of the conical bucket is reduced, and the air flow speed at the annular gap is increased, which can blow off the raw material attached to the side wall of the conical bucket, allowing the raw material attached to the side wall of the conical bucket to quickly fall into the center of the bottom of the conical bucket and be quickly sucked away.

[0018] Furthermore, it also includes a pharmaceutical raw material dislocation diversion mechanism, which includes flange 1, 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 component. The bottom end of the fan is connected to the top of the upper hemispherical shell through flange 1, 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 constitute a fixed spherical shell. A movable spherical shell is installed in the fixed spherical shell. A top through groove is provided in the top center of the movable spherical shell, and a plurality of anti-blocking grooves are provided in a circular array around the top of the movable spherical shell. The bottom of the movable spherical shell is connected to a distance-adjustable conveying component. The pharmaceutical raw materials are extracted into the vacuum suction silo, which is only the preliminary work of loading. The pharmaceutical raw materials also need to be added to other pharmaceutical equipment. Since the pharmaceutical equipment in the pharmaceutical workshop is large, the vacuum suction silo cannot be accurately arranged directly above the pharmaceutical equipment. The upper and lower positions of the vacuum suction silo and the pharmaceutical equipment will be staggered. At this time, if a hose is used to connect the bottom of the blower to the addition port of the pharmaceutical equipment, if the pharmaceutical raw materials are powder with poor fluidity, the use of a hose that is easy to bend will cause low efficiency in adding pharmaceutical raw materials. Therefore, a pharmaceutical raw material staggered diversion mechanism is set up, and the movable spherical shell can move in the fixed spherical shell composed of the upper hemisphere shell and the lower hemisphere shell, thereby changing the direction of the movable spherical shell bottom distance from the adjustable conveying component. The distance of the distance-adjustable conveying component is adjustable, and the bottom end of the distance-adjustable conveying component is connected to the adding 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 component, it can adapt to the situation where the vacuum suction bin and the adding port of the pharmaceutical equipment are misaligned in the upper and lower positions, and has good adaptability. When adding pharmaceutical raw materials, the vacuum pump stops working, and the fan is turned off to release the raw materials at the bottom of the vacuum suction bin into the fixed spherical shell. The raw materials pass through the top groove and the anti-blocking groove into the distance-adjustable conveying component, and the pharmaceutical raw materials are injected into the adding port of the pharmaceutical equipment through the distance-adjustable conveying component. In order to promote the falling of the raw materials, a vibration motor can be set on the pharmaceutical raw material dislocation guide mechanism.

[0019] Furthermore, the distance-adjustable conveying assembly includes a guide tube, an extension tube, a hose, and flange 2. The bottom of the movable spherical shell passes through the circular groove and is connected to the top of the guide tube. The outer side of the bottom end of the guide tube slides and connects to the top of the extension tube. The bottom end of the extension tube is connected to one end of the hose. The other end of the hose is connected to flange 2, and the guide tube is connected to the extension tube via a sliding anti-detachment assembly. The extension tube slides relative to the guide tube, and the length of the conveying pipeline formed by the guide tube and the extension tube can be adjusted. The anti-detachment assembly prevents the extension tube from detaching from the guide tube. The hose is very short, less than ten centimeters, and will not excessively affect the falling of the raw materials due to the large friction force. The setting of the hose facilitates the alignment and installation of flange 2 with the addition port of the pharmaceutical equipment.

[0020] Compared with the prior art, the beneficial effects of the feeding device for pharmaceutical production are:

[0021] 1. Due to the negative pressure, the raw materials sucked through the suction pipe first enter the dust reduction mechanism in the middle of the raw materials, forming an air vortex in the dust reduction mechanism. 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 fall, which promotes the powder in the raw materials to settle to the bottom of the vacuum suction bin. The drop of the raw materials 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. The drop is smaller than the drop from the middle of the vacuum suction bin directly to the bottom of the vacuum suction bin, which is beneficial to reduce the amount of dust raised when the raw materials fall and avoid the filter element being blocked too quickly.

[0022] 2. When the vacuum pump starts working, the suction pipe and the suction cylinder are first in a negative pressure state. The negative pressure in the suction cylinder will drive the piston to move up in the suction cylinder. At this time, the annular cleaning brush is located on the top of the filter element. At this time, the external raw materials enter the vacuum suction bin through the suction pipe with the airflow. The dust in the airflow is filtered by the filter element and then discharged by the suction cylinder 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 is gradually balanced, 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 the dust falls into the vacuum suction bin. The annular cleaning brush is driven upward by the action of the air pressure when the vacuum pump is working. The filter element is cleaned after the vacuum pump stops working. No additional power components are required, which will save electricity to a certain extent.

[0023] 3. The suction pipe draws raw materials from the center of the bottom of the conical bucket. When the raw materials in the conical bucket decrease, the annular gap between the inner wall of the conical bucket and the bottom of the conical guide tube 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 bucket, allowing the raw materials attached to the side wall of the conical bucket to quickly fall into the center of the bottom of the conical bucket and be quickly sucked away, thereby completely extracting the raw materials in the conical bucket. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of a feeding device for pharmaceutical production according to the present invention;

[0025] Figure 2 For the present invention Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0026] Figure 3 This is a schematic diagram of the top view of the feeding device for pharmaceutical preparation according to the present invention;

[0027] Figure 4 For the present invention Figure 3 Schematic diagram of the cross-section structure at point B in the middle;

[0028] Figure 5 For the present invention Figure 4A schematic diagram of the partially enlarged structure at point C in the middle;

[0029] Figure 6 For the present invention Figure 4 The schematic diagram of the partially enlarged structure at D in the middle;

[0030] Figure 7 For the present invention Figure 4 Schematic diagram of the local enlarged structure at E in the middle;

[0031] Figure 8 For the present invention Figure 4 The schematic diagram of the partially enlarged structure at F in the middle;

[0032] Figure 9 For the present invention Figure 4 Schematic diagram of the local enlarged structure at G in the middle;

[0033] Figure 10 This is a schematic diagram of the partial structure of the feeding device for pharmaceutical production according to the present invention;

[0034] Figure 11 For the present invention Figure 10 Schematic diagram of the structure viewed from above;

[0035] In the figure: 1-pharmaceutical suction mechanism, 11-vacuum suction bin, 12-filter element installation cylinder, 13-support installation ring, 14-bin cover, 15-fixed ring, 16-fan off, 17-suction pipe, 18-vacuum pump, 19-suction cylinder, 110-filter element, 111-suction pipe, 2-filter element follow-up cleaning mechanism, 21-sliding column, 22-cleaning bracket, 23-annular cleaning brush, 24-fixed sealing ring, 25-conical sealing ring, 26-follower plate, 27-spring installation sleeve 1, 28-compression spring, 29-follower piston column, 210-piston, 211-spring installation sleeve 2, 212-side branch pipe, 213-dust shield, 3-raw material middle convergence dust reduction mechanism, 31-raw material guide cylinder, 32-conical cover, 33-support rod, 34-guide spiral blade, 4-self-weight lifting hopper mechanism, 41-silo, 42-conical hopper, 43-seat ring, 44-fixed rod, 45-telescopic rod, 46-lifting spring, 47-support ring, 5-feeding and air inlet guide mechanism, 51-bent rod, 52-feeding guide cylinder, 53-cylinder cover, 54-conical guide cylinder, 55-limiting bump, 6-air inlet filter assembly, 61-annular filter rack, 62-annular filter, 7-pharmaceutical raw material dislocation guide mechanism, 71-flange one, 72-upper hemispherical shell, 73-lower hemispherical shell, 74-movable spherical shell, 75-top through groove, 76-anti-blocking groove, 77-guide cylinder, 78-anti-slip side groove, 79-screw sleeve, 710-butterfly bolt, 711-extension cylinder, 712-hose, 713-flange two. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] For example 1, please refer to Figures 1 to 11 , this embodiment provides a technical solution: a feeding device for pharmaceuticals, including a pharmaceutical suction mechanism 1, the pharmaceutical suction mechanism 1 includes a vacuum suction bin 11, a filter element mounting cylinder 12, a supporting mounting ring 13, a bin cover 14, a fan shut-off fan 16, a filter element 110 and a suction pipe 111, a filter element mounting cylinder 12 is installed on the top inner side of the vacuum suction bin 11, a supporting mounting ring 13 is provided on the top edge of the filter element mounting cylinder 12, the supporting mounting ring 13 is placed and installed on the top edge of the vacuum suction bin 11, the bottom of the filter element mounting cylinder 12 is closed, and a plurality of filter elements 110 are interspersed at the bottom of the filter element mounting cylinder 12, and the specific number of filter elements 110 can be selected according to needs. A bin cover 14 is installed on the top of the vacuum suction bin 11, and the edge of the bin cover 14 is located on the upper side of the supporting mounting ring 13, and the bin cover 14 and the supporting mounting 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 a conical structure, the bottom diameter of the vacuum suction bin 11 is smaller than the middle diameter, and a related fan 16 is installed at the bottom of the vacuum suction bin 11, and the left side of the middle part of the vacuum suction bin 11 is connected to the end of the suction pipe 111.

[0038] The pharmaceutical suction mechanism 1 also includes an air suction pipe 17, a vacuum pump 18, and an air suction cylinder 19. The center of the hopper 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 through the air suction pipe 17. When the vacuum pump 18 is in operation, it draws the air inside the hopper cover 14 into a negative pressure state through the air suction pipe 17 and the air suction cylinder 19, creating a negative pressure state or a near-vacuum state inside the vacuum suction hopper 11. At this time, the external raw materials enter the vacuum suction hopper 11 through the airflow through the air suction pipe 111. The air suction cylinder 19 is used to cooperate with the negative pressure follower control component.

[0039] The pharmaceutical suction mechanism 1 further includes a fixing ring 15 , and the outer side of the vacuum suction bin 11 is fixedly sleeved with the fixing ring 15 . The vacuum suction bin 11 can be installed at a desired position with the help of the fixing ring 15 and mounting bolts.

[0040] It also includes a filter element follow-up cleaning mechanism 2 and a raw material middle gathering dust reduction mechanism 3.

[0041] The filter element follower cleaning mechanism 2 includes a negative pressure follower control component and a filter element cleaning component. The filter element cleaning component is installed on the filter element mounting tube 12. The filter element cleaning component is connected to the negative pressure follower control component. The top of the negative pressure follower control component is slidably connected to the inside of the suction cylinder body 19.

[0042] The filter element cleaning assembly includes 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 vertically slidably installed in the 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. An annular cleaning brush 23 that cooperates with the outer peripheral side of each filter element 110 is respectively installed on the cleaning bracket 22. The tops of the two slide posts 21 are respectively fixed to the two ends of the follower plate 26 by screws. The bottom surface of the filter element mounting cylinder 12 is fixedly connected to the position of the slide post 21. The bottom of the fixed sealing ring 24 is provided with an annular groove, and the top surface of the cleaning bracket 22 is fixedly connected to the position of the slide post 21. The top diameter of the conical sealing ring 25 is smaller than the bottom diameter, and the annular groove and the conical sealing ring 25 are arranged correspondingly up and down. The fixed sealing ring 24 and the conical sealing ring 25 are both made of rubber material.

[0043] The negative pressure follower control assembly includes a compression spring 28, a follower piston column 29, 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 of the follower piston column 29 is installed 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 of the compression spring 28 is connected to the top center of the bin 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.

[0044] The negative pressure follow-up control component also includes a spring mounting sleeve 1 27 and a spring mounting sleeve 211. The upper side of the follow-up plate 26 is fixedly connected to the spring mounting sleeve 1 27, and the top of the compartment cover 14 is fixedly connected to the spring mounting sleeve 211. The spring mounting sleeve 1 27 and the spring mounting sleeve 211 are arranged to coincide with the center of the sliding column 21. The top end of the compression spring 28 is connected to the spring mounting sleeve 211, and the bottom end of the compression spring 28 is connected to the spring mounting sleeve 1 27. The arrangement of the spring mounting sleeve 1 27 and the spring mounting sleeve 211 makes the installation of the compression spring 28 more stable.

[0045] When the vacuum pump 18 starts working, the suction pipe 17 and the suction cylinder 19 are first in a negative pressure state. The negative pressure in the suction cylinder 19 will drive the piston 210 to move upward in the suction cylinder 19. The piston 210 drives the follower plate 26 upward through the follower piston rod 29. The follower plate 26 drives the sliding column 21 to move upward relative to the bottom of the filter element mounting 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 19, the air in the bin cover 14 will first enter the area under the piston 210 in the suction cylinder 19, and then enter the top of the suction cylinder 19 through the side branch pipe 212, and finally be sucked away by the vacuum pump 18 through the suction pipe 17. The vacuum pump 18 keeps working stably, the height of the piston 210 in the suction cylinder 19 keeps stable, and the air flow also passes stably through the side branch pipe 212. At this time, the annular cleaning brush 23 is located at the top of the filter element 110, and 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 dust-containing airflow from passing through the gap between the filter element mounting cylinder 12 and the sliding column 21. This prevents the airflow containing raw material dust from bypassing the filter element 110 and damaging the vacuum pump 18, thereby preventing the loss of raw material being discharged and preventing the raw material dust from being discharged into the working environment and polluting the working environment. The external raw material enters the vacuum suction bin 11 through the suction pipe 111 along with the airflow. The dust in the airflow is filtered by the filter element 110 and then discharged by the suction cylinder 19 and the suction pipe 17. The raw material dust is filtered by the filter element 110, and a considerable amount of 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 pressures on the upper and lower sides of the piston 210 in the suction cylinder 19 are gradually balanced, and the air thrust maintaining the piston 210 upward gradually disappears. The compression spring 28 resets and extends, 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 mounting 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 attached to the outside of the filter element 110, and the dust falls into the vacuum suction bin 11. The annular cleaning brush 23 is driven upward by the action of the air pressure when the vacuum pump 18 is working. After the vacuum pump 18 stops working, the filter element 110 is cleaned without the need for additional power components, which will save electricity to a certain extent.

[0046] The filter element follow-up cleaning mechanism 2 also includes a dust shield 213. A circular dust shield 213 is installed on the cleaning bracket 22. A circular through hole corresponding to the annular cleaning brush 23 is opened on the dust shield 213. The outer peripheral side of the dust shield 213 is vertically slidably connected to the inner wall of the vacuum suction bin 11. When the vacuum pump 18 stops working, the cleaning bracket 22 and the annular cleaning brush 23 move downward relative to the filter element 110. The annular cleaning brush 23 cleans the dust attached to the outside of the filter element 110, and the fallen dust will spread at the bottom of the vacuum suction bin 11. The set dust shield 213 can prevent a large amount of dust from spreading upward and repeatedly sticking to the filter element 110.

[0047] The raw material middle-converging 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-converging dust reduction mechanism 3 .

[0048] The raw material middle convergence dust reduction mechanism 3 includes a raw material guide cylinder 31, a conical cover 32, a support rod 33 and a guide spiral blade 34. A vertical raw material guide cylinder 31 is installed in the middle of the vacuum suction bin 11 through the support rod 33. The top of the raw material guide cylinder 31 is integrally connected with the conical cover 32. One end of the suction pipe 111 is located in the vacuum suction bin 11 and is connected to the feed hole on the rear side of the top of the raw material guide 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 guide cylinder 31. A guide spiral blade 34 is provided on the inner side of the raw material guide cylinder 31. The guide spiral blade 34 is a spiral blade that spirals downward clockwise, and the vertical cross-section of the guide spiral blade 34 at any position and the center line of the raw material guide cylinder 31 are at an angle of 30 to 50 degrees. The center of the vacuum suction bin 11 and the raw material guide cylinder 31 coincide.

[0049] Because the centerline of the feed hole is tangentially aligned with the inner wall of the raw material guide tube 31, the raw material and air entering the raw material guide tube 31 from the suction pipe 111 form a vortex within the raw material guide tube 31. The centrifugal force of the vortex causes the raw material to rotate along the inner wall of the raw material guide tube 31. Due to the raw material's own gravity, the raw material moves in a clockwise, spiral downward trajectory within the raw material guide tube 31. The guiding spiral blades 34 guide the movement of the raw material within the raw material guide tube 31, ultimately discharging the raw material from the bottom of the raw material guide tube 31 and landing on the bottom of the vacuum suction bin 11. Compared to directly landing from the center of the vacuum suction bin 11, the drop in the raw material from the bottom of the raw material guide tube 31 to the bottom of the vacuum suction bin 11 is reduced. Furthermore, the airflow is more dispersed in the annular space between the vacuum suction bin 11 and the raw material guide tube 31, making it less likely that dust in the raw material will be lifted by the upward airflow within the vacuum suction bin 11, thereby reducing the need for filtration by the filter element 110. At the same time, the friction between the raw material and the upper side of the guide spiral blade 34 will also reduce the speed of the raw material entering the vacuum suction bin 11, reduce the impact force of the raw material falling to the bottom of the vacuum suction bin 11, and also reduce dust.

[0050] During use, the fan 16 is a pressure-resistant type. It is used to seal the bottom of the vacuum suction bin 11 and remove the air from the top of the vacuum suction bin 11, leaving the top of the vacuum suction bin 11 in a negative pressure state, or in other words, in a near-vacuum state. External air enters the middle of the vacuum suction bin 11 through the suction pipe 111, is filtered by the filter element 110, and is then drawn to the outside of the vacuum suction bin 11. At this time, the end of the suction pipe 111 away from the vacuum suction bin 11 is extended into the hopper mechanism. The raw materials in the hopper mechanism will follow the airflow into the suction pipe 111, then enter the vacuum suction bin 11. Due to gravity, the raw materials will fall to the bottom of the vacuum suction bin 11. Dust raised by the falling raw materials will follow the airflow toward the filter element 110, where it will be filtered out. When negative pressure is applied to the vacuum hopper 11, the negative pressure also drives the negative pressure follower control assembly upward, which in turn drives the filter element cleaning assembly upward relative to the vacuum hopper 11 and filter element 110 until the filter element cleaning assembly corresponds to the top of the filter element 110. A large amount of dust filtered by the filter element 110 will remain on the outer periphery of the filter element 110. When the negative pressure applied to the vacuum hopper 11 stops, the negative pressure follower control assembly is no longer driven upward by the negative pressure, and the negative pressure follower control assembly drives the filter element cleaning assembly downward to reset. During this downward movement, the filter element cleaning assembly cleans the dust on the outer periphery of the filter element 110, causing the dust to fall to the bottom of the vacuum hopper 11. In order to reduce the risk of dust raised by raw materials falling into the vacuum hopper 11, which may approach the filter element 110 with the airflow and cause it to quickly clog, and to avoid excessive load when negative pressure is applied to the vacuum hopper 11, a dust reduction mechanism 3 is provided to collect and reduce dust in the middle of the raw materials. When the suction pipe 111 draws the raw material into the vacuum suction bin 11, it first enters the dust reduction mechanism 3 in the middle of the raw material, and forms an air vortex in the dust reduction mechanism 3 in the middle of the raw material. The air vortex is conducive to the powder in the raw material settling to the bottom center of the vacuum suction bin, which is conducive to reducing the dust raised when the raw material falls in the vacuum suction bin 11. The reduction of raised dust will also delay the speed at which the dust blocks the filter element 110, thereby increasing the service life of the filter element 110 and reducing the frequency of replacement of the filter element 110.

[0051] For example 2, 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 roughly the same as that of the first embodiment, except that:

[0052] A self-weight lifting hopper mechanism 4, a feeding and air intake guide mechanism 5 and an air intake filter assembly 6 are also provided. The self-weight lifting hopper mechanism 4 includes a silo 41, a conical hopper 42, a seat ring 43, a fixed rod 44 and a self-weight elastic lifting assembly. Four fixed rods 44 are provided in an annular array on the upper side of the seat ring 43. The tops of the four fixed rods 44 are installed with a silo 41 through a self-weight elastic lifting assembly. The bottom of the silo 41 is fixedly connected to 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 the end of the suction pipe 111 away from the vacuum suction silo 11. A feeding and air intake guide mechanism 5 is installed in the silo 41.

[0053] The seat ring 43 and the fixed rod 44 serve as the base frame supporting the silo 41. When the silo 41 and the conical bucket 42 are full of raw materials to be loaded, the silo 41 and the conical bucket 42 are heavy, and the self-weight elastic lifting component is compressed, the silo 41 and the conical bucket 42 descend, and the annular gap between the bottom of the feeding and air intake guide mechanism 5 and the inner side of the conical bucket 42 increases. When there is a lot of raw materials, it will not affect the external air intake flowing into the conical bucket 42 to draw out the raw materials. When the hopper 41 and the conical bucket 42 are almost exhausted of raw materials, the self-weight elastic lifting assembly resets and rises, the hopper 41 and the conical bucket 42 rise, the annular gap between the inner side of the conical bucket 42 and the bottom of the feeding and air inlet guide mechanism 5 is reduced, and the air flow speed at the annular gap is increased, which can blow off the raw materials attached to the side walls of the conical bucket 42, and allow the raw materials attached to the side walls of the conical bucket 42 to quickly fall into the center of the bottom of the conical bucket 42 and be quickly sucked away, so that the raw materials in the conical bucket 42 are completely extracted, and there is no need for an additional vibration motor or air hammer to vibrate the conical bucket 42 to cause the raw materials attached to the side walls of the conical bucket 42 to fall into the bottom of the conical bucket 42.

[0054] The self-weight elastic lifting assembly includes 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 all fixedly connected to the support ring 47, and a lifting spring 46 is respectively sleeved on each telescopic rod 45. The silo 41 and the conical bucket 42 are filled with raw materials to be loaded. At this time, the silo 41 and the conical bucket 42 are heavier, the lifting spring 46 is compressed, the telescopic rod 45 is shortened, and the support ring 47, the silo 41 and the conical bucket 42 are lowered relative to the feeding and air intake guide mechanism 5. At this time, the annular gap between the bottom of the feeding and air intake guide mechanism 5 and the inner side of the conical bucket 42 increases. When the raw materials in the silo 41 and the conical bucket 42 are extracted and reduced, the lifting spring 46 gradually resets and extends, driving the telescopic rod 45 to extend, and the support ring 47, the silo 41 and the conical bucket 42 rise relative to the feeding and air intake guide mechanism 5, and the annular gap between the bottom of the feeding and air intake guide mechanism 5 and the inner side of the conical bucket 42 decreases.

[0055] The feeding and air intake guide mechanism 5 includes a bent rod 51, a feeding guide tube 52, a tube cover 53, a conical guide tube 54 and a limiting protrusion 55. A feeding guide tube 52 is provided in the silo 41, and the filling port at the top of the feeding guide tube 52 is threadedly connected to the tube cover 53. The top of the feeding guide tube 52 is fixedly connected to the top of the fixing rod 44 through the bent rod 51. There are two bent rods 51, and the bent rods 51 are fixedly connected to the top of the feeding guide tube 52 by bolts. An annular air intake cavity is provided between the inner side of the silo 41 and the outer side of the feeding guide tube 52. An annular air intake filter assembly 6 is installed on the outer side of the top of the feeding guide tube 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 tube 52 is integrally connected with the conical guide tube 54, and the bottom diameter of the conical guide tube 54 is smaller than the top diameter.

[0056] 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 tube 54. The specific number of the limiting protrusions 55 is four. The top diameter of the conical guide tube 54 is larger than the bottom diameter. The angle between the hypotenuse of the conical guide tube 54 and the center line of the conical guide tube 54 is smaller than the angle between the hypotenuse of the conical bucket 42 and the center line of the conical bucket 42.

[0057] The curved rod 51 secures the feeding guide tube 52 to the fixed rod 44, so the height of the feeding guide tube 52 does not change with the amount of raw material in the silo 41 and the conical hopper 42. When the tube cover 53 is opened, raw material to be loaded into the silo 41 and the conical hopper 42 can be added through the filling port at the top of the feeding guide tube 52. Then, the tube cover 53 is closed. At this time, the silo 41 and the conical hopper 42 are heavier, the lifting spring 46 is compressed, the telescopic rod 45 shortens, the support ring 47, the silo 41, and the conical hopper 42 descend relative to the feeding guide tube 52, and the annular gap between the bottom of the conical guide tube 54 and the inside of the conical hopper 42 increases. This prevents the excessive amount of raw material in the silo 41 and the conical hopper 42 from blocking the annular gap and affecting the air intake efficiency. When the conical hopper 42 is full of raw material, the larger annular gap does not prevent a large amount of external air from entering the conical hopper 42, allowing the raw material to be quickly and stably extracted. When the raw materials in the hopper 41 and the conical bucket 42 are extracted and reduced, the lifting spring 46 gradually resets and extends, driving the telescopic rod 45 to extend, and the support ring 47, the hopper 41 and the conical bucket 42 rise relative to the feeding and air intake guide mechanism 5. The annular gap between the bottom of the conical guide tube 54 and the inner side of the conical bucket 42 is reduced, and the air flow speed at the annular gap is increased, which can blow off the raw materials attached to the side wall of the conical bucket 42, allowing the raw materials attached to the side wall of the conical bucket 42 to quickly fall into the bottom center of the conical bucket 42 and be quickly sucked away.

[0058] Among them, the setting of the limiting protrusion 55 prevents the bottom of the conical guide tube 54 from pressing against the bottom of the conical bucket 42, causing the annular gap to disappear and affecting the airflow into the conical bucket 42. Therefore, when the conical bucket 42 rises relative to the conical guide tube 54, when the bottom of the conical guide tube 54 contacts the limiting protrusion 55, the annular gap is already at its minimum state, and the conical bucket 42 cannot move further up to approach the bottom of the conical guide tube 54.

[0059] The air intake filter assembly 6 includes an annular filter frame 61 and an annular filter 62. The annular filter 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 frame 61 is vertically slidably connected to the inner side of the silo 41, and an annular filter 62 is installed on the annular filter frame 61. The annular filter 62 can filter the air entering the silo 41 to prevent external dust from entering the silo 41 with the air flow and contaminating the pharmaceutical raw materials.

[0060] For example three, 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 roughly the same as that of the second embodiment, except that:

[0061] The pharmaceutical raw materials are extracted into the vacuum suction bin 11 to complete the preliminary work of loading. The pharmaceutical raw materials also need to be added to other pharmaceutical equipment. Since the pharmaceutical equipment in the pharmaceutical workshop is large, the vacuum suction bin 11 cannot be accurately arranged directly above the pharmaceutical equipment. The upper and lower positions of the vacuum suction bin 11 and the pharmaceutical equipment will be staggered. At this time, if a hose is used to connect the bottom of the fan 16 to the addition port of the pharmaceutical equipment, if the pharmaceutical raw materials are powder with poor fluidity, the use of a hose that is easy to bend will result in low efficiency in adding the pharmaceutical raw materials. Therefore, a pharmaceutical raw material staggered diversion mechanism 7 is set.

[0062] The pharmaceutical raw material dislocation guide mechanism 7 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 shut-off fan 16 is connected to the top of the upper hemispherical shell 72 through a flange 71, the bottom of the upper hemispherical shell 72 is connected to the top of the lower hemispherical shell 73, and a circular 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, and 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, and a plurality of anti-blocking grooves 76 are provided in a circular array around the top of the movable spherical shell 74. The bottom of the movable spherical shell 74 is connected to a distance-adjustable conveying component.

[0063] 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 direction of the bottom of the movable spherical shell 74 from the adjustable conveying component. The distance from the adjustable conveying component is adjustable, and the bottom end of the adjustable conveying component is connected to the addition 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 adjustable distance conveying component, it can adapt to the situation where the vacuum suction bin 11 and the addition port of the pharmaceutical equipment are misaligned in the upper and lower positions, and has good adaptability.

[0064] When adding pharmaceutical raw materials, the vacuum pump 18 stops working, and the fan 16 is turned off to release 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 component through the top 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 component. In order to promote the falling of the raw materials, a vibration motor can be set on the pharmaceutical raw material dislocation guide mechanism 7.

[0065] The adjustable distance conveying assembly includes 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 circular groove and is connected to the top of the guide tube 77. The outer side of the bottom end of the guide tube 77 slides and connects 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. The guide tube 77 is connected to the extension tube 711 via a sliding anti-detachment assembly. The extension tube 711 slides relative to the guide tube 77, allowing the length of the conveying pipeline formed by the guide tube 77 and the extension tube 711 to be adjusted. The provision of the anti-detachment assembly prevents the extension tube 711 from detaching from the guide tube 77. The hose 712 is very short, less than ten centimeters, and will not excessively affect the falling of the raw materials due to large friction. The provision of the hose 712 facilitates the alignment and installation of the second flange 713 with the addition port of the pharmaceutical equipment.

[0066] The sliding anti-slip assembly includes an anti-slip side groove 78, a screw sleeve 79, and a butterfly bolt 710. Two anti-slip side grooves 78 are respectively provided on both sides of the guide tube 77. Two screw sleeves 79 are fixedly connected to the two sides of the top of the extension tube 711. Two butterfly bolts 710 are respectively threadedly connected in the two screw sleeves 79. The ends of the two butterfly bolts 710 are respectively extended into the corresponding anti-slip side grooves 78. The bottom end of the anti-slip side groove 78 is horizontally positioned at the same height as the bottom end of the guide tube 77. Therefore, once the butterfly bolt 710 is extended into the anti-slip side groove 78, the extension tube 711 cannot slip off from the bottom end of the guide tube 77.

[0067] See also Figures 1 to 11 , a feeding method for a feeding device for pharmaceutical production, comprising the following steps:

[0068] Step one, open the cylinder cover 53, and add the raw materials to be loaded into the silo 41 and the conical bucket 42 through the filling port on the top of the feeding guide cylinder 52, and then cover the cylinder cover 53. At this time, the silo 41 and the conical bucket 42 are heavier, the lifting spring 46 is compressed, the telescopic rod 45 is shortened, the support ring 47, the silo 41 and the conical bucket 42 are lowered relative to the feeding guide cylinder 52, and the annular gap between the bottom of the conical guide cylinder 54 and the inner side of the conical bucket 42 is increased to avoid the raw materials in the silo 41 and the conical bucket 42 blocking the annular gap and affecting the air intake efficiency.

[0069] Step 2: Turn off the fan 16 to seal the bottom of the vacuum suction bin 11, and extract the air at the top of the vacuum suction bin 11, so that the top of the vacuum suction bin 11 is in a negative pressure state. The external air is filtered through the air intake filter assembly 6 and enters the bin 41. Then the airflow carries the raw materials at the bottom of the conical bucket 42 into the suction pipe 111, and enters the middle of the raw materials in the vacuum suction bin 11 through the suction pipe 111 and converges in the dust reduction mechanism 3.

[0070] In step three, the raw materials and air entering the raw material guiding tube 31 form a vortex in the raw material guiding tube 31. The centrifugal force of the vortex makes the raw materials rotate along the inner wall of the raw material guiding tube 31. Due to the gravity of the raw materials themselves, the raw materials move in a clockwise spiral downward trajectory in the raw material guiding tube 31. The guiding spiral blades 34 guide the movement of the raw materials in the raw material guiding tube 31. Finally, the raw materials are discharged from the bottom of the raw material guiding tube 31 and fall to the bottom of the vacuum suction bin 11. The dust in the raw materials is not easily lifted up by the upward airflow in the vacuum suction bin 11.

[0071] Step 4: When the raw materials in the hopper 41 and the conical bucket 42 are extracted and reduced, the lifting spring 46 gradually resets and extends, driving the telescopic rod 45 to extend, and the support ring 47, the hopper 41 and the conical bucket 42 rise relative to the feeding and air intake guide mechanism 5. The annular gap between the bottom of the conical guide tube 54 and the inner side of the conical bucket 42 is reduced, and the air flow speed at the annular gap is increased, which can blow off the raw materials attached to the side wall of the conical bucket 42, allowing the raw materials attached to the side wall of the conical bucket 42 to quickly fall into the center of the bottom of the conical bucket 42 and be quickly sucked away.

[0072] Step 5: When the vacuum pump 18 starts working, the suction pipe 17 and the suction cylinder 19 are first in a negative pressure state. The negative pressure in the suction cylinder 19 will drive the piston 210 to move upward in the suction cylinder 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 mounting 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 in the suction When the air inside the cylinder 19 is higher than the bottom end of the side branch pipe 212, the air in the bin cover 14 will first enter the area below the piston 210 in the suction cylinder 19, then pass through the side branch pipe 212 into the top of the suction cylinder 19, 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 19 remains stable, and the airflow also passes stably through the side branch pipe 212. At this time, the annular cleaning brush 23 is located at the top of the filter element 110.

[0073] Step six, the raw materials enter the vacuum suction bin 11 through the dust reduction mechanism 3 in the middle of the raw materials. The dust in the air flow is filtered by the filter element 110 and then discharged by the suction cylinder 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.

[0074] Step seven, after the raw material extraction is completed, the vacuum pump 18 stops working. At this time, the pressures on the upper and lower sides of the piston 210 in the suction cylinder 19 are gradually balanced, and the air thrust maintaining the piston 210 upward gradually disappears. The compression spring 28 resets and extends, 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 mounting 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 attached to the outside of the filter element 110, and the dust falls into the vacuum suction bin 11.

[0075] In step eight, the fan 16 is turned off to release the raw materials at the bottom of the vacuum suction bin 11 into the fixed spherical shell. The raw materials pass through the top groove 75 and the anti-blocking groove 76 into the distance-adjustable conveying assembly, and the pharmaceutical raw materials are injected into the addition port of the pharmaceutical equipment through the distance-adjustable conveying assembly to complete the feeding work.

[0076] It is worth noting that the air shut-off fan 16 and the vacuum pump 18 disclosed in the above embodiments are both controlled by an external PLC controller, and the control method thereof adopts the method commonly used in the prior art.

[0077] It should be noted that, in this document, relational terms such as first and second, etc., are used only 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 "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0078] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the 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) includes 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), and the left side of the middle of the vacuum suction bin (11) is connected to the end of the 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 mounted 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 interior of the suction cylinder (19); A dust reduction mechanism (3) for converging the middle of the raw material is installed in the middle of the vacuum suction bin (11), and an end of the suction pipe (111) extends into the vacuum suction bin (11) and is connected to the dust reduction mechanism (3) for converging the middle of the raw material; It also includes a self-weight lifting hopper mechanism (4), the self-weight lifting hopper mechanism (4) includes a hopper (41), a conical hopper (42), a seat ring (43), a fixed rod (44) and a self-weight elastic lifting component, the upper side of the seat ring (43) is provided with four fixed rods (44) in a circular array, the top of the four fixed rods (44) is installed with a hopper (41) through the self-weight elastic lifting component, the bottom of the hopper (41) is fixedly connected to the conical hopper (42), the bottom of the conical hopper (42) is connected to one end of the suction pipe (111) away from the vacuum suction hopper (11), and the hopper (41) is installed with a feeding air intake guide mechanism (5); The feeding and air intake guide mechanism (5) includes a feeding guide cylinder (52) and a conical guide cylinder (54), the feeding guide cylinder (52) is provided in the silo (41), the 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 the fixing rod (44) through 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 the inner wall of the conical bucket (42) is provided with a plurality of limiting protrusions (55) in a circular array corresponding to the position of the bottom end of the conical guide cylinder (54).

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 installed 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). An annular cleaning brush (23) that cooperates with the outer peripheral side of each filter element (110) is respectively installed 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). The bottom surface of the filter element mounting cylinder (12) is fixedly connected to the position of the slide post (21). The bottom of the fixed sealing ring (24) is provided with an annular groove. The top surface of the cleaning bracket (22) is fixedly connected to the position of the slide post (21).

4. The feeding device for pharmaceutical preparation according to claim 3, characterized in that: The negative pressure follower control assembly includes 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 of the follower piston column (29) is installed 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 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-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) through 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 the feed hole on the rear side of the top of the raw material guide tube (31); and a guide spiral blade (34) is provided 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 self-weight elastic lifting assembly includes a telescopic rod (45), a lifting spring (46) and a support ring (47). The outer side of the top of the conical bucket (42) is fixedly sleeved with a support ring (47). The tops of the four fixed rods (44) are respectively fixedly connected to the bottom 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 each telescopic rod (45) is sleeved with a lifting spring (46).

7. The feeding device for pharmaceutical preparation according to claim 1, characterized in that: The invention also includes a pharmaceutical raw material dislocation guide mechanism (7), wherein the pharmaceutical raw material dislocation guide mechanism (7) 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 fan (16) is connected to the top of the upper hemispherical shell (72) through the flange (71), and 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. A movable spherical shell (74) is installed in the fixed spherical shell. A top through groove (75) is provided at the center of the top of the movable spherical shell (74). A plurality of anti-blocking grooves (76) are provided in a circular array around the top of the movable spherical shell (74). The bottom of the movable spherical shell (74) is connected to the distance-adjustable conveying component.

8. The feeding device for pharmaceutical preparation according to claim 7, characterized in that: The distance-adjustable conveying assembly includes a guide tube (77), an extension tube (711), a hose (712) and a second flange (713). The bottom of the movable spherical shell (74) passes through the circular 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) through a sliding anti-detachment assembly.

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