Medicine conveying device

Abstract

The invention relates to the technical field of powder conveying, and particularly discloses a medicine conveying device which comprises a conveying vehicle and a negative pressure device, a feeding pipe is connected to the end of the negative pressure device, a driving device used for driving the feeding pipe to move is installed on the conveying vehicle, a feeding head is arranged at the end of the feeding pipe, and a filter cartridge with a downward opening is rotationally arranged on the feeding head. The filter cartridge divides the feeding head into a left part and a right part, an opening of the feeding pipe faces the right side face of the filter cartridge, a smashing assembly is rotationally arranged in the feeding pipe to smash particles in the filter cartridge, and a knocking assembly for knocking the filter cartridge is arranged on the left side of the filter cartridge. A sealing net plate used for sealing the discharging opening is arranged on the filtering cylinder in a sliding mode, and a driving assembly used for driving the smashing assembly and the filtering cylinder to rotate is installed on the filtering cylinder; by arranging the rotary filter cartridge and the knocking assembly, the filter cartridge is prevented from being blocked, and uncrushed medicinal materials are discharged out of the filter cartridge after the filter cartridge is opened by the elastic rod.

Description

Technical Field

[0001] The present invention relates to the technical field of powder delivery, and in particular to a medicine delivery device. Background Art

[0002] In the pharmaceutical production process, a granulator is usually required for granulation. The powder is moistened by adding a binder (such as water, ethanol, polymer solution), and then formed into granules through stirring and shearing. Finally, it is dried. When the medicinal powder is transported to the granulator, negative pressure vacuum equipment is usually used to transport the medicinal powder from the conveyor vehicle to the granulator. However, the adsorption equipment is prone to blockage during the transportation process.

[0003] A Chinese patent document with authorization announcement number CN111039043B discloses a powder conveying device, which relates to the technical field of powder conveying; in the patent document, the powder conveying device includes: the interior of the tank body is arranged to be hollow, and the upper surface of the tank body is arranged in a plane; the end cover is arranged above the tank body, and the lower surface of the end cover is fitted and connected with the upper surface of the tank body; the rotating body is arranged below the tank body, the interior of the rotating body is arranged to be hollow, a conveying shaft is arranged inside the rotating body, and a conveying pipeline is arranged on the right side of the rotating body; the conveying motor is arranged on the left side of the rotating body; the discharging body is arranged on the right side of the discharging body, and a discharging port is opened below the discharging body; the pneumatic ball valve is arranged above the end cover, and the pneumatic ball valve is fixedly connected to the end cover; the locking device is arranged on the outer periphery of the end cover and the tank body, and the locking device is arranged in the middle of the connection between the end cover and the tank body; the patent is used to prevent the problem that the filter cartridge inside the tank body for conveying powder needs to be disassembled and assembled on the top of the silo to clean the inside of the filter cartridge after long-term use, resulting in a decrease in the sealing performance of the device.

[0004] When cleaning the filter cartridge, the above technical solution lifts the fixed column upward by a certain distance by rotating the lifting stud, so that a gap is generated between the fitting surface of the end cover and the tank body, and then the end cover is rotated in a circle around the fixed column to open the end cover, and then the filter cartridge is cleaned and maintained. If the filter cartridge is blocked during the operation of the equipment, it may affect the powder conveying efficiency, and serious blockage may also damage the equipment. Summary of the invention

[0005] The present invention provides a medicine conveying device, aiming to solve the problem in the related art that medicine powder may be blocked during conveying.

[0006] A medicine delivery device, comprising: a delivery vehicle and a negative pressure device, a feed pipe is connected to the end of the negative pressure device, a driving device for driving the feed pipe to move is installed on the delivery vehicle, a feed head is arranged at the end of the feed pipe, a filter cartridge with an opening facing downward is rotatably arranged on the feed head, the filter cartridge divides the feed head into left and right parts, the opening of the feed pipe faces the right side of the filter cartridge, a crushing assembly is rotatably arranged in the feed pipe to crush particles in the filter cartridge, and a knocking assembly for knocking the filter cartridge is arranged on the left side of the filter cartridge; The filter cartridge is provided with a discharge port, and a closed mesh plate for closing the discharge port is slidably provided on the filter cartridge, the closed mesh plate has a protrusion, an elastic rod is installed on the crushing assembly, the elastic rod contacts the inner wall of the filter cartridge to scrape off particles on the inner wall of the filter cartridge, and when the elastic rod contacts the protrusion, it drives the closed mesh plate to slide to open and close the discharge port, and a driving assembly for driving the crushing assembly and the filter cartridge to rotate is installed on the filter cartridge.

[0007] The effect is as follows: the medicine powder is transported by the conveyor vehicle, the feed head is driven to move by the driving device so that the negative pressure device can convey the medicine powder in the conveyor vehicle to the granulator; by setting a rotating filter cartridge, the filter cartridge rotates so that different parts face the side of the feed pipe, and when the filter cartridge rotates to face the knocking component, the filter cartridge is knocked by the knocking component to shake off the medicine powder in the mesh of the filter cartridge; the granular medicine powder in the filter cartridge is crushed by the crushing component; when the crushing component rotates, the closed mesh plate is pushed to open the filter cartridge, and the medicine particles on the inner wall of the filter cartridge are scraped off and extended out of the filter cartridge by the rotation of the elastic rod, so as to push the medicine powder out of the filter cartridge, and when the elastic rod rotates in the opposite direction, the closed mesh plate is pushed to close the filter cartridge, and the knocking component can further crush the impurities discharged from the filter cartridge when knocking on the filter cartridge, and can pass through the filter cartridge under the suction of the negative pressure device.

[0008] Preferably, the feed head is shaped like an elliptical cylinder with a hollow interior, and the filter cartridge is shaped like a cylindrical cylinder with a hollow interior. The filter cartridge is installed in the exact center of the feed head to divide the feed head into two left and right parts. The opening of the feed pipe is connected to the right side part of the feed head and faces the right side of the filter cartridge. The feed head is divided into two left and right parts by the filter cartridge, and when the filter cartridge rotates, the suction force applied by the feed pipe to the filter cartridge is directed toward different parts of the filter cartridge.

[0009] Preferably, the crushing assembly includes a rotating shaft, a rotating frame is arranged below the rotating shaft, and a plurality of crushing plates are fixedly arranged between the left and right sides of the rotating frame, and the plurality of crushing plates are evenly distributed vertically on the rotating frame; the rotation of the rotating shaft drives the rotating frame to rotate and then drives the crushing plates to crush the granular medicinal material powder entering the filter cylinder.

[0010] Preferably, the vertical cross-section of the crushing plate is rhombus-shaped, and when the rotating frame drives the crushing plate to rotate clockwise or counterclockwise, the granular medicinal materials in the filter cartridge can be cleaned.

[0011] Preferably, the knocking assembly includes a mounting shaft rotatably arranged on the left side of the filter cartridge, a mounting platform is arranged on one side of the mounting shaft, a knocking plate is rotatably arranged on the mounting platform, and a torsion spring is installed between the knocking plate and the mounting platform; the knocking plate is driven to contact the outer wall of the filter cartridge and then knock on the filter cartridge through the rotation of the mounting shaft, and the torsion spring is arranged so that the knocking plate can pass over the outer wall of the filter cartridge when rotating.

[0012] Preferably, mounting grooves are provided on the left and right side walls of the rotating frame, the elastic rod includes a spring and a push rod, the spring is fixedly arranged in the mounting groove, the push rod is connected to the end of the spring and slides left and right along the mounting groove, and the end of the elastic rod is provided with two upper and lower inclined surfaces; by arranging the mounting grooves on both sides of the rotating frame, when the rotating frame rotates, the elastic rod follows the rotation and scrapes off the granular medicinal materials and powdered granular medicinal materials on the inner wall of the filter cylinder, and when the push rod contacts the protrusion, it can push the closed screen plate to rotate on the filter cylinder, and after the closed screen plate slides a certain distance, the protrusion moves to make the elastic rod slide toward the center of the filter cylinder to compress the spring, and the elastic rod can cross the protrusion and continue to rotate.

[0013] Preferably, an arc groove is provided on the filter cartridge, the arc groove extends from one side of the discharge port to the other side, and the closed mesh plate is slidably arranged in the arc groove; the arc groove plays a guiding role in the sliding of the closed mesh plate.

[0014] Preferably, the driving assembly comprises a rotating motor, a driving gear, a first driven gear, a second driven gear and a gear ring, the rotating motor is mounted on the top of the feed head, the driving gear is mounted on the end of the rotating motor, the first driven gear and the second driven gear are respectively meshed on the left and right sides of the driving gear, the first driven gear is mounted on the crushing assembly, the second driven gear is mounted on the knocking assembly, the gear ring is concentrically fixedly arranged on the top of the filter cartridge, the gear ring is internally meshed with the driving gear, and a one-way bearing is installed between the gear ring and the filter cartridge; the driving gear is driven to rotate by the rotating motor, the driving gear drives the first driven gear, the second driven gear and the gear ring to rotate, the first driven gear drives the crushing assembly to rotate, the second driven gear drives the knocking assembly to rotate, the gear ring drives the filter cartridge to rotate, the rotation of the filter cartridge is opposite to the rotation direction of the crushing assembly, so that the powdered medicinal materials on the filter cartridge can be scraped off, and a one-way bearing is installed between the gear ring and the filter cartridge so that the discharge port of the filter cartridge can face the left side, and the medicinal material powder on the filter cartridge is scraped off when the elastic rod rotates.

[0015] Preferably, a friction piece is installed between the filter cartridge and the feed head, and the friction piece is a rubber ring to increase the friction between the filter cartridge and the feed head; by arranging the friction piece between the filter cartridge and the feed head, the discharge port on the filter cartridge can be kept facing the left side.

[0016] Preferably, the driving device includes a transverse linear motor, a vertical linear motor and an electric telescopic rod, the vertical linear motor is installed at the moving end of the transverse linear motor, the electric telescopic rod is installed at the output end of the vertical linear motor, and the feed head is installed at the movable end of the electric telescopic rod; by arranging the transverse linear motor, the vertical linear motor and the electric telescopic rod, the feed head can absorb medicinal materials at different positions in the conveying vehicle.

[0017] By adopting the above technical solution, the beneficial effects of the present invention are as follows: 1. In the process of conveying medicinal powder, the negative pressure device is used to suck the powder from the conveyor vehicle into the granulator, while the drive device is responsible for pushing the feed head to move, thereby sucking the powder in the conveyor vehicle; 2. By installing a rotating filter cartridge and a knocking assembly, when the filter cartridge rotates to one side of the feed pipe and encounters a blocked particle, the blocked side turns toward the knocking assembly. Under the action of the knocking assembly, the particles blocked on the filter cartridge will be shaken off to prevent the filter cartridge from being blocked. The rotating design of the filter cartridge can effectively prevent one side from being completely blocked, thereby ensuring the smooth transportation of medicinal powder; 3. A crushing assembly is installed in the feed cylinder filter cylinder 5, so that the granular medicinal material powder granular medicinal material entering the filter cylinder can be crushed, further reducing the possibility of clogging of the filter cylinder; 4. There is a discharge port on the filter cartridge. When the filter cartridge contains powdered medicinal materials that are difficult to crush, the drive assembly will turn the discharge port of the filter cartridge to the left. At the same time, when the crushing assembly rotates, the elastic rod will open the discharge port and push the medicinal material powder on the inner wall of the filter cartridge to move outward. The knocking assembly between the filter cartridge and the discharge port will crush the powder again, and the part that cannot be crushed will be taken out. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the conveying vehicle, negative pressure device and driving device of the present invention.

[0019] Figure 2 It is a schematic structural diagram of the feed head of the present invention.

[0020] Figure 3 It is a schematic diagram of the structure of the driving assembly of the present invention.

[0021] Figure 4 It is a schematic structural diagram of the crushing assembly of the present invention.

[0022] Figure 5It is a schematic structural diagram of the striking assembly of the present invention.

[0023] Figure 6 It is a schematic structural diagram of the discharge port and the closed mesh plate of the present invention.

[0024] Figure 7 It is a schematic structural diagram of the elastic rod and the rotating frame of the present invention.

[0025] Reference numerals: 1. Conveyor vehicle; 2. Negative pressure device; 3. Driving device; 31. Horizontal linear motor; 32. Vertical linear motor; 33. Electric telescopic rod; 4. Feed head; 5. Filter cartridge; 6. Crushing assembly; 61. Rotating shaft; 62. Rotating frame; 63. Crushing plate; 7. Knocking assembly; 71. Mounting shaft; 72. Mounting table; 73. Knocking plate; 74. Torsion spring; 8. Discharge port; 81. Closed mesh plate; 82. Protrusion; 83. Arc groove; 9. Elastic rod; 91. Mounting groove; 92. Spring; 93. Push rod; 10. Driving assembly; 101. Rotating motor; 102. Driving gear; 103. First driven gear; 104. Second driven gear; 105. Ring gear. DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0027] like Figure 1-Figure 7 As shown, a drug delivery device includes a delivery vehicle 1, a negative pressure device 2, a driving device 3, a feed head 4, and a filter cartridge 5 rotatably arranged in the feed head 4; the drug powder is delivered by the delivery vehicle 1, the drug powder in the delivery vehicle 1 is sucked by the negative pressure device 2, the driving device 3 drives the feed head 4 to move and absorb the powder in the delivery vehicle 1 as much as possible, and the drug powder in the feed head 4 is filtered by the filter cartridge 5.

[0028] In a specific embodiment of the present invention, the negative pressure device 2 is of model SH-4000, and negative pressure is provided by the negative pressure device 2. A feed pipe is connected to the negative pressure device 2, and a feed head 4 is connected to the end of the feed pipe. The feed pipe is made of a soft rubber tube, and the inner wall of the rubber tube is made of polypropylene to reduce the stickiness of the drug powder on the inner wall of the feed pipe. When the driving device 3 drives the feed head 4 to move, the feed pipe can bend.

[0029] The driving device 3 includes a horizontal linear motor 31, a vertical linear motor 32 and an electric telescopic rod 33. The vertical linear motor 32 is installed at the moving end of the horizontal linear motor 31, the electric telescopic rod 33 is installed at the output end of the vertical linear motor 32, and the feed head 4 is installed at the movable end of the electric telescopic rod 33; when conveying the pharmaceutical powder, the vertical linear motor 31 is driven to move by the horizontal linear motor 31, so that the feed head 4 can absorb the pharmaceutical powder on the same horizontal plane of the conveying vehicle 1, and the feed head 4 is driven to rise and fall by the electric telescopic rod 33, so as to absorb the pharmaceutical powder at different depths in the conveying vehicle 1.

[0030] The shape of the feed head 4 is an elliptical cylinder with a hollow interior, and the shape of the filter cartridge 5 is a cylindrical cylinder with a hollow interior. The filter cartridge 5 is installed in the center of the feed head 4. Two left and right cavities are formed between the inner wall of the filter cartridge 5 and the inner wall of the feed head 4. The feed pipe is connected to the right cavity. When feeding, the medicine enters from the bottom of the filter cartridge 5, and after being filtered by the filter cartridge 5, it enters the right cavity. Then, the medicine powder is transported from the feed pipe through the negative pressure device 2 to the medicine granulator connected to the negative pressure device 2 (the medicine granulator is not shown in the drawings of the present invention).

[0031] When the drug powder enters the filter cartridge 5, the negative pressure device 2 will suck the large particles in the drug powder into the filter cartridge 5. When the large particles of drug powder gather too much in the filter cartridge 5, it is very easy to cause the filter cartridge 5 to be blocked. Since the feed pipe is connected to the right side of the feed head 4, the granular drug powder will move toward the right side of the feed head 4. In order to avoid the clogging of the filter cartridge 5, a crushing component 6 is arranged in the filter cartridge 5. When the granular drug powder enters the filter cartridge 5, the crushing component 6 will crush the drug powder, and at the same time, the filter cartridge 5 can be The filter cartridge 5 is able to rotate on its own. When the medicines gather toward the right side of the filter cartridge 5 for a period of time, the filter cartridge 5 is rotated to make the blocked part of the filter cartridge 5 rotate to the left side. A knocking component 7 for knocking the filter cartridge 5 is provided in the left cavity of the filter cartridge 5. When the blocked part of the filter cartridge 5 rotates to the left side, under the suction of the negative pressure device 2, the granular medicines blocking the filter cartridge 5 have a tendency to move to the right. The granular medicines are knocked out of the filter hole of the filter cartridge 5 by the knocking component 7, and the detached granular medicines are crushed again by the crushing component 6.

[0032] The crushing assembly 6 includes a rotating shaft 61, a rotating frame 62 is arranged below the rotating shaft 61, and a plurality of crushing plates 63 are fixedly arranged between the left and right sides of the rotating frame 62, and the plurality of crushing plates 63 are evenly distributed along the vertical direction of the rotating frame 62; when the medicinal powder is sucked into the filter cartridge 5, the rotating frame 62 is driven to rotate by the rotation of the rotating shaft 61, and the rotation of the rotating frame 62 causes the crushing plates 63 to rotate, and the granular medicinal materials in the filter cartridge 5 are cleaned by the rotation of the crushing plates 63. Specifically, the vertical cross-section of the crushing plates 63 is a rhombus, and when the rotating frame 62 drives the crushing plates 63 to rotate clockwise or counterclockwise, the granular medicinal materials in the filter cartridge 5 can be cleaned.

[0033] The knocking assembly 7 includes a mounting shaft 71 rotatably arranged on the left side of the filter cartridge 5, a mounting platform 72 is arranged on one side of the mounting shaft 71, a knocking plate 73 is rotatably arranged on the mounting platform 72, and a torsion spring 74 is installed between the knocking plate 73 and the mounting platform 72; when the mounting shaft 71 rotates, it drives the mounting platform 72 and the knocking plate 73 to rotate, and when the knocking plate 73 rotates to contact the filter cartridge 5, it hits the side wall of the filter cartridge 5, thereby shaking off the granular medicinal materials in the filter hole of the filter cartridge 5, and at the same time, cooperates with the suction force of the negative pressure device 2 to move the granular medicinal materials toward the right side of the filter cartridge 5.

[0034] If the granular medicinal materials in the filter cartridge 5 are still difficult to crush after being impacted by the crushing plate 63, the granular medicinal materials will gather in the filter cartridge 5, which will affect the filtering effect of the filter cartridge 5, and may even block the filter cartridge 5, thereby affecting the conveying efficiency of the medicinal powder, and may even cause damage to the negative pressure device 2.

[0035] In order to solve the above problems, the filter cartridge 5 is provided with a discharge port 8, and a closed mesh plate 81 for closing the discharge port 8 is slidably provided on the filter cartridge 5, and the closed mesh plate 81 has a protrusion 82. An elastic rod 9 is installed on the crushing assembly 6, and the elastic rod 9 contacts the inner wall of the filter cartridge 5 to scrape off the particles on the inner wall of the filter cartridge 5. When the elastic rod 9 contacts the protrusion 82, it drives the closed mesh plate 81 to slide to open and close the discharge port 8.

[0036] When a relatively large amount of granular medicinal powder and granular medicinal materials that are difficult to be crushed by the crushing assembly 6 gathers in the filter cylinder 5, the crushing assembly 6 drives the elastic rod 9 to rotate when it rotates. When the elastic rod 9 rotates forward, the granular medicinal powder and granular medicinal materials attached to the inner wall of the filter cylinder 5 are scraped off. When the elastic rod 9 rotates to contact with the protrusion 82, the closed mesh plate 81 slides on the filter cylinder 5, and the closed mesh plate 81 opens the discharge port 8. When the elastic rod 9 rotates, the granular medicinal powder and granular medicinal materials on the inner wall of the filter cylinder 5 are pushed into the feed head 4 from the discharge port 8. After the elastic rod 9 rotates forward for several turns, the granular medicinal powder and granular medicinal materials on the inner wall of the filter cylinder 5 are completely scraped off and pushed into the feed head 4, and then the elastic rod 9 rotates reversely. When the elastic rod 9 rotates reversely to contact with the protrusion 82, the closed mesh plate 81 is pushed to rotate reversely and then the discharge port 8 is closed.

[0037] The left and right side walls of the rotating frame 62 are provided with mounting grooves 91, and the elastic rod 9 includes a spring 92 and a push rod 93. The spring 92 is fixedly arranged in the mounting groove 91, and the push rod 93 is connected to the end of the spring 92 and slides left and right along the mounting groove 91. The end of the elastic rod 9 is provided with two upper and lower inclined surfaces; when the crushing assembly 6 rotates, the elastic rod 9 rotates with the crushing assembly 6. Whether the elastic rod 9 rotates forward or reverse, the contact part between the elastic rod 9 and the protrusion 82 is the inclined surface at the end of the elastic rod 9. When the elastic rod 9 rotates forward, it pushes the closed mesh plate 81 to slide on the filter cartridge 5 and then opens the discharge port 8. After the discharge port 8 is fully opened, the closed mesh plate 81 no longer slides. At this time, when the crushing assembly 6 drives the elastic rod 9 to rotate, the protrusion 82 causes the push rod 93 to slide in the installation groove 91 and move toward the center of the filter cartridge 5. At this time, the spring 92 is compressed. After the push rod 93 passes over the protrusion 82, the spring 92 is reset and the end of the push rod 93 contacts the inner wall of the filter cartridge 5 again. Similarly, when the elastic rod 9 rotates in the opposite direction, it pushes the closed mesh plate 81 to slide on the filter cartridge 5 to close the discharge port 8. When the discharge port 8 is closed, the crushing assembly 6 drives the elastic rod 9 to rotate in the opposite direction, and the elastic rod 9 returns to its original position after passing over the protrusion 82.

[0038] An arc groove 83 is provided on the filter cartridge 5 , extending from one side of the discharge port 8 to the other side, and the closed mesh plate 81 is slidably disposed in the arc groove 83 ; when the elastic rod 9 pushes the closed mesh plate 81 to move, the closed mesh plate 81 slides in the arc groove 83 .

[0039] A driving assembly 10 is installed above the filter cartridge 5, and the driving assembly 10 includes a rotating motor 101, a driving gear 102, a first driven gear 103, a second driven gear 104 and a ring gear 105. The rotating motor 101 is installed on the top of the feed head 4, and the driving gear 102 is installed at the end of the rotating motor 101. The first driven gear 103 and the second driven gear 104 are respectively meshed on the left and right sides of the driving gear 102. The first driven gear 103 is installed on the crushing assembly 6, and the second driven gear 104 is installed on the knocking assembly 7. The ring gear 105 is concentrically fixed on the top of the filter cartridge 5, and the ring gear 105 is meshed with the driving gear 102. A one-way bearing is installed between the ring gear 105 and the filter cartridge 5, and a friction member is installed between the filter cartridge 5 and the feed head 4.

[0040] The first driven gear 103 is mounted on the rotating shaft 61, and the second driven gear 104 is mounted on the mounting shaft 71. When the rotating motor 101 rotates forward, it drives the driving gear 102 to rotate and then drives the first driven gear 103, the second driven gear 104 and the ring gear 105 to rotate. When the driving gear 102 rotates forward, the first driven gear 103 rotates in the opposite direction, and the ring gear 105 rotates forward. That is to say, the rotation direction of the crushing component 6 is opposite to that of the filter cylinder 5. The elastic rod 9 on the crushing component 6 scrapes off the granular medicinal material powder on the inner wall of the filter cylinder 5. At the same time, when the crushing component 6 rotates, the granular medicinal material powder in the filter cylinder 5 is crushed; when the driving gear 102 rotates reversely, the first driven gear 103 rotates forward. Since a one-way bearing is installed between the ring gear 105 and the filter cylinder 5, the filter cylinder 5 no longer rotates. At this time, the discharge port 8 on the filter cylinder 5 faces the left side. When the elastic rod 9 rotates, the discharge port 8 is opened and the material is pushed out from the discharge port 8.

[0041] After the elastic rod 9 opens the discharge port 8, the end of the elastic rod 9 protrudes outward from the inner wall of the filter cylinder 5 for a distance. When the medicinal powder scraped off by the push rod 93 contacts the closed mesh plate 81, it is scraped to the outside of the closed mesh plate 81. When the closed mesh plate 81 closes the discharge port 8, the scraped granular medicinal powder and granular medicinal material are on the outside of the filter cylinder 5; the material of the end of the push rod 93 is wear-resistant material, specifically high manganese steel.

[0042] A friction piece is installed between the filter cartridge 5 and the feed head 4. The friction piece is a rubber ring to increase the friction between the filter cartridge 5 and the feed head 4. When the first driven gear 103 rotates forward, the filter cartridge 5 stops rotating.

[0043] The granular medicinal material powder that cannot be crushed by the pulverizing component 6 is relatively heavy. After being pushed out of the filter cylinder 5, this kind of medicinal material powder exists in the area on the left side between the feed head 4 and the filter cylinder 5. When the knocking component 7 knocks the filter cylinder 5, the knocking plate 73 on the knocking component 7 contacts the closed mesh plate 81 to knock the medicinal material into powder. There is friction between the closed mesh plate 81 and the arc groove 83. When the knocking plate 73 rotates to knock the medicinal material into powder, it will cause the closed mesh plate to be pressed. 81 applies a certain thrust, which is not enough to push the closed mesh plate 81 to slide in the arc groove 83 to prevent the knocking component 7 from opening the discharge port 8 when knocking the closed mesh plate 81, thereby breaking part of the medicinal materials into medicinal powder that can pass through the filter cartridge 5. The broken medicinal powder is sucked into the granulator by the negative pressure device 2. After the negative pressure device 2 has worked for a period of time, the small amount of medicinal powder that has not been broken is taken out of the granular medicinal material in the area on the left side between the feed head 4 and the filter cartridge 5.

[0044] A sealing plate is detachably provided between the feed head 4 and the bottom of the filter cartridge 5, and the sealing plate is fixed on the feed head 4 by screws; when it is necessary to take out the granular medicinal materials in the area on the left side between the feed head 4 and the filter cartridge 5, the screws are removed, the sealing plate is removed, and the granular medicinal materials that have not been crushed can be taken out.

[0045] Working principle: When the medicinal material powder is transported, the medicinal material powder on the transport vehicle 1 is sucked into the granulator through the negative pressure device 2, and the feed head 4 is driven by the driving device 3 to move and then the medicinal material powder in the transport vehicle 1 is sucked; by setting a rotating filter cartridge 5 and a knocking component 7, when the filter cartridge 5 rotates, there are blocked particles on the side facing the feed pipe, and then it rotates to the side facing the knocking component 7, and the blocked particles on the filter cartridge 5 are shaken off under the knocking of the knocking component 7 to avoid clogging of the filter cartridge 5. At the same time, the rotating filter cartridge 5 can avoid one side of the filter cartridge 5 from being completely blocked as much as possible, which affects the transportation of medicinal material powder; by setting powder in the feed cartridge filter cartridge 5 The crushing component 6 can crush the granular medicinal powder entering the filter cartridge 5, thereby further avoiding the clogging of the filter cartridge 5. By setting the discharge port 8 on the filter cartridge 5, when the medicinal powder that is difficult to crush gathers more in the filter cartridge 5, the discharge port 8 on the filter cartridge 5 is directed to the left by the driving component 10. At the same time, when the crushing component 6 rotates, the elastic rod 9 thereon opens the discharge port 8, and the medicinal powder on the inner wall of the filter cartridge 5 is pushed to the outside of the filter cartridge 5. The knocking component 7 set between the filter cartridge 5 and the discharge port 8 can crush this part of the medicinal powder again, and the medicinal powder that cannot be crushed can be taken out again.

[0046] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A drug delivery device, comprising a delivery vehicle (1) and a negative pressure device (2), wherein the end of the negative pressure device (2) is connected to a feed pipe, and a driving device (3) for driving the feed pipe to move is installed on the delivery vehicle (1), characterized in that: A feed head (4) is provided at the end of the feed pipe, a filter cartridge (5) with an opening facing downward is rotatably provided on the feed head (4), the filter cartridge (5) divides the feed head (4) into two parts, a left part and a right part, the opening of the feed pipe faces the right side of the filter cartridge (5), a crushing assembly (6) is rotatably provided in the feed pipe to crush particles in the filter cartridge (5), and a knocking assembly (7) for knocking the filter cartridge (5) is provided on the left side of the filter cartridge (5); The filter cartridge (5) is provided with a discharge port (8), a closed mesh plate (81) for closing the discharge port (8) is slidably provided on the filter cartridge (5), the closed mesh plate (81) having a protrusion (82), an elastic rod (9) is mounted on the crushing assembly (6), the elastic rod (9) contacts the inner wall of the filter cartridge (5) to scrape off particles on the inner wall of the filter cartridge (5), and when the elastic rod (9) contacts the protrusion (82), the closed mesh plate (81) is driven to slide so as to open and close the discharge port (8), and a driving assembly (10) is mounted on the filter cartridge (5) for driving the crushing assembly (6) and the filter cartridge (5) to rotate.

2. The drug delivery device according to claim 1, characterized in that: The feed head (4) is in the shape of an elliptical cylinder with a hollow interior, the filter cartridge (5) is in the shape of a cylindrical cylinder with a hollow interior, the filter cartridge (5) is installed in the exact center of the feed head (4) to divide the feed head (4) into two left and right parts, and the opening of the feed pipe is connected to the right side part of the feed head (4) and faces the right side of the filter cartridge (5).

3. The drug delivery device according to claim 1, characterized in that: The crushing assembly (6) comprises a rotating shaft (61), a rotating frame (62) is arranged below the rotating shaft (61), a plurality of crushing plates (63) are fixedly arranged between the left and right sides of the rotating frame (62), and the plurality of crushing plates (63) are evenly distributed along the vertical direction of the rotating frame (62).

4. The drug delivery device according to claim 3, characterized in that: The vertical cross-section of the crushing plate (63) is rhombus-shaped. When the rotating frame (62) drives the crushing plate (63) to rotate clockwise or counterclockwise, the granular medicinal materials in the filter cartridge (5) can be cleaned.

5. The drug delivery device according to claim 1, characterized in that: The knocking assembly (7) comprises a mounting shaft (71) rotatably arranged on the left side of the filter cartridge (5); a mounting platform (72) is arranged on one side of the mounting shaft (71); a knocking plate (73) is rotatably arranged on the mounting platform (72); and a torsion spring (74) is installed between the knocking plate (73) and the mounting platform (72).

6. The drug delivery device according to claim 3, characterized in that: The left and right side walls of the rotating frame (62) are both provided with mounting grooves (91). The elastic rod (9) comprises a spring (92) and a push rod (93). The spring (92) is fixedly arranged in the mounting groove (91). The push rod (93) is connected to the end of the spring (92) and slides left and right along the mounting groove (91). The end of the elastic rod (9) is provided with two upper and lower inclined surfaces.

7. The drug delivery device according to claim 1, characterized in that: The filter cartridge (5) is provided with an arc-shaped groove (83), which extends from one side of the discharge port (8) to the other side, and the closed mesh plate (81) is slidably disposed in the arc-shaped groove (83).

8. The drug delivery device according to claim 7, characterized in that: The driving assembly (10) comprises a rotating motor (101), a driving gear (102), a first driven gear (103), a second driven gear (104) and a ring gear (105); the rotating motor (101) is mounted on the top of the feed head (4); the driving gear (102) is mounted on the end of the rotating motor (101); the first driven gear (103) and the second driven gear (104) are respectively meshed on the left and right sides of the driving gear (102); the first driven gear (103) is mounted on the pulverizing assembly (6); the second driven gear (104) is mounted on the knocking assembly (7); the ring gear (105) is concentrically fixedly arranged on the top of the filter cartridge (5); the ring gear (105) is internally meshed with the driving gear (102); and a one-way bearing is mounted between the ring gear (105) and the filter cartridge (5).

9. The drug delivery device according to claim 8, characterized in that: A friction piece is installed between the filter cartridge (5) and the feed head (4) to increase the friction force between the filter cartridge (5) and the feed head (4).

10. The drug delivery device according to any one of claims 1 to 9, characterized in that: The driving device (3) comprises a transverse linear motor (31), a vertical linear motor (32) and an electric telescopic rod (33); the vertical linear motor (32) is mounted on the movable end of the transverse linear motor (31); the electric telescopic rod (33) is mounted on the output end of the vertical linear motor (32); and the feed head (4) is mounted on the movable end of the electric telescopic rod (33).

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