Medicinal raw material powder refining and mixing equipment

Abstract

The utility model discloses medicine raw material powder refining and mixing equipment, and belongs to the technical field of medicine raw material powder processing. Comprising a pneumatic conveying unit, a preliminary mixing unit, an airflow crushing unit, a powder collecting unit and a collecting hopper, and the preliminary mixing unit is connected to a conveying pipe of the pneumatic conveying unit through a first blanking valve; the collecting hopper comprises a first vacuum hopper and a second vacuum hopper; bottom valves are arranged at the bottoms of the first vacuum hopper and the second vacuum hopper, exhaust pipes are arranged on the first vacuum hopper and the second vacuum hopper, and filters are arranged on the inner sides of the exhaust pipes. The feeding end of the first vacuum hopper and the feeding end of the second vacuum hopper are connected to a conveying pipe of the pneumatic conveying unit through feeding valves respectively. The medical raw material powder refining and mixing equipment disclosed by the utility model can deeply crush and refine medical raw material powder, and can fully mix the powder in the crushing process, so that the production requirement of the medical raw material powder is met.

Description

Technical Field

[0001] The utility model specifically relates to a device for refining and mixing medicine raw material powder, and belongs to the technical field of medicine raw material powder processing. Background Art

[0002] The uniformity of mixing of pharmaceutical raw materials and ingredients directly affects the quality and use effect of the medicine. Therefore, the raw materials need to be fully dispersed and uniform, and in the production process of pharmaceutical powders, strict requirements are placed on the particle size of the pharmaceutical powders. Therefore, it is necessary to provide a pharmaceutical raw material processing equipment that can meet the above requirements, such as the Chinese patent authorization announcement number: CN216935818U, which discloses a pharmaceutical powder production line, including a first vacuum reactor, a group of feed pipes, a grinder, a second vacuum reactor, a drying device, and a hopper. The structure premixes the pharmaceutical raw materials and water through the first vacuum reactor, and then grinds and disperses them in the grinder to make the mixed material more refined and uniform. The ground mixed material enters the second vacuum reactor for further dispersion and emulsification, and then is dehydrated through the drying device. However, the structure needs to add water for grinding, and requires a subsequent drying process. After drying, agglomeration and caking will occur, and the purpose of powder refinement and sufficient mixing cannot be achieved. Utility Model Content

[0003] In order to solve the above problems, the utility model proposes a pharmaceutical raw material powder refining and mixing equipment, which can deeply crush and refine the pharmaceutical raw material powder. During the crushing process, the powder can be fully mixed to meet the production needs of pharmaceutical raw material powder.

[0004] The utility model of the pharmaceutical raw material powder refining and mixing equipment comprises:

[0005] Pneumatic conveying unit;

[0006] A preliminary mixing unit, wherein the preliminary mixing unit is connected to the conveying pipe of the pneumatic conveying unit through a first blanking valve;

[0007] A collecting hopper, the collecting hopper comprising a first vacuum hopper and a second vacuum hopper; a bottom valve is provided at the bottom of the first vacuum hopper and the second vacuum hopper, an exhaust pipe is provided on the first vacuum hopper and the second vacuum hopper, and a filter is provided inside the exhaust pipe; the feeding ends of the first vacuum hopper and the second vacuum hopper are respectively connected to the conveying pipe of the pneumatic conveying unit through the feeding valve;

[0008] The airflow pulverizing unit, the bottom valve of the first vacuum hopper is connected to the feed end of the airflow pulverizing unit through a feeding pipe, and a discharge valve is provided at the bottom of the airflow pulverizing unit; the discharge valve is connected between the second vacuum hopper and the feed valve;

[0009] A powder collecting unit, wherein the feeding end of the powder collecting unit is connected to the powder separation end of the airflow pulverizing unit through an intermediate pipe; an upper valve group is arranged at the bottom of the powder collecting unit, the upper valve group is connected to the middle end of the tee, and the other two ends of the tee are respectively connected to the first valve group and the second valve group, the first valve group is connected to the airflow pulverizing unit through a return pipe; the second valve group is connected to the injection air source.

[0010] When the pharmaceutical raw material powder refining and mixing equipment is working, the raw material powder that has completed preliminary crushing is sent to the preliminary mixing unit, and the raw material powder is mixed once by the preliminary mixing unit. After mixing, the once mixed raw material is driven into the conveying pipe of the pneumatic conveying unit through the first blanking valve, and sent to the airflow crushing unit through the pneumatic conveying unit, and the once mixed raw material is airflow crushed by the airflow crushing unit to obtain refined raw material powder, and then, it is screened through the powder separation end of the airflow crushing unit, and the refined powder that passes the screening is sent to the powder collecting unit, and the raw material powder that does not pass the screening is re-crushed by high-pressure airflow until all the raw material powder is refined and enters the powder collecting unit; when the powder collecting unit completes the collection of all raw material powders, the upper valve group is opened, and the blowing air source is opened to re-collect the raw material powder of the powder collecting unit It is sent to the air flow grinding unit, and the air flow grinding unit is kept in motion to achieve cyclic air flow grinding, screening, mixing and collection by the powder collection unit; when the cycle reaches the set time, the pressure of the compressed air in the air flow grinding unit is reduced, and the compressed air pressure is one-fifth to one-third of the crushing compressed air pressure; at this time, the compressed air is used as a hybrid gas, and the compressed air provides power for the secondary mixing of the raw material powder in the air flow grinding unit. After the mixing is completed, the compressed air of the air flow grinding unit is closed, the discharge valve at the bottom of the air flow grinding unit is opened, and the pneumatic conveying unit is opened to send the mixed raw material refined powder to the second vacuum hopper, and the second vacuum hopper collects all the processed pharmaceutical raw material powders; finally, compressed air is injected into the second valve group through the blowing air source, and the remaining raw material powder is collected in conjunction with the pneumatic conveying unit.

[0011] Furthermore, a reverse blowing interface is provided on the powder collection unit, and the reverse blowing interface is connected to the exhaust valve and the recoil valve through a tee, and the exhaust valve is connected to the secondary collection unit, and the exhaust filter hole of the secondary collection unit is smaller than the exhaust filter hole of the powder collection unit; the recoil valve is connected to the blowing air source.

[0012] When the reverse blowing interface is connected with the exhaust valve, the filtered fine dust can enter the secondary collection unit through the exhaust valve during the process of the powder collecting unit collecting the raw powder, and the fine dust is collected by the secondary collection unit. When the powder collecting unit completes the collection of all the raw powder, it is sent back to the air flow pulverizing unit for secondary mixing; finally, the raw powder is discharged. When discharging, the powder collecting unit, the recoil valve and the blowing air source are connected, and the blowing air source is used to recoil the powder collecting unit with compressed air, so that the raw powder left in the powder collecting unit and the upper end of the air flow pulverizing unit is driven into the lower part of the air flow pulverizing unit, and the raw powder that has been refined and fully mixed is driven into the second vacuum hopper through the conveying air provided by the pneumatic conveying unit.

[0013] Furthermore, the air flow pulverizing unit includes a pulverizing tube cavity, which is fixed to the base through a support leg; the pulverizing tube cavity includes a pulverizing tube section, which is fixed with a separation tube section through a flange, a sealing plate is fixed on the top of the separation tube section, and the discharge valve is arranged at the bottom of the pulverizing tube section; a plurality of nozzles are arranged at the lower part of the pulverizing tube section; the nozzle is connected to a steel wire hose through a flange; the steel wire hose is connected to an air bag, a compressed air inlet flange is arranged on the air bag, and the compressed air inlet flange is connected to an air source; the feed pipe and the return pipe are arranged at the lower part of the pulverizing tube section and above the high-pressure nozzle; a screening impeller is rotatably installed inside the separation tube section; one end of the screening impeller is closed, and the other end is rotatably arranged in a collecting cover, an intermediate pipe and a screening motor for driving the screening impeller to rotate are fixed to the outside of the separation tube section, and the intermediate pipe is connected to the inside of the collecting cover.

[0014] During operation, compressed air is pumped into the air bag through the compressed air inlet flange, and the compressed air is distributed to each steel wire hose through the air bag, and then pumped into the nozzle through the steel wire hose. The compressed air is ejected into the crushing pipe section at high speed. Under the action of the high-pressure airflow, the materials collide and crush each other. No friction heat will occur during crushing. The crushed raw materials rise to the separation pipe section through the airflow. At the same time, the screening motor drives the screening impeller to rotate continuously. At the same time, the crushed raw materials enter the screening impeller through the sieve holes of the screening impeller, and then, through the transmission of the compressed air flow and the suction of the powder collection unit, the crushed raw materials enter the collecting hopper and are collected through the collecting hopper. The raw materials that have not reached the particle size fall back to the crushing pipe section. The high-pressure airflow in the crushing pipe section continues to crush the falling raw materials until all materials reach the particle size requirements.

[0015] Furthermore, the powder collecting unit is a cyclone dust collector or a bag dust collector.

[0016] Furthermore, the secondary collection unit is a cyclone dust collector, a bag dust collector or a water-washing dust removal unit.

[0017] Furthermore, the preliminary mixing unit includes a mixing tank, which is provided with a feed hopper and an electric stirring paddle; the output end of the feed hopper is provided with a switch valve; after the preliminary crushing of the pharmaceutical raw material powder, it is sent to the mixing tank, and the switch valve is closed, and the electric stirring paddle is turned on, so that the pharmaceutical raw material powder can be initially stirred at a low speed to avoid heat in the mixing tank due to excessive stirring speed, which affects the efficacy of the pharmaceutical raw material powder; after stirring is completed, it is sent to the airflow crushing unit through the first blanking valve and the pneumatic conveying unit for secondary refinement, crushing and mixing.

[0018] Furthermore, the exhaust pipes of the first vacuum hopper and the second vacuum hopper are both connected to the secondary collection unit. The first vacuum hopper and the second vacuum hopper collect the raw pharmaceutical powder delivered by the pneumatic conveying unit, and discharge the pressurized gas through the exhaust pipe. When the pressurized gas is released, the raw pharmaceutical powder is intercepted by the filter, and the fine powder of the raw pharmaceutical powder is discharged through the exhaust pipe and collected by the secondary collection unit.

[0019] Compared with the prior art, the pharmaceutical raw material powder refining and mixing equipment of the utility model can preliminarily stir and mix the crushed pharmaceutical raw materials through the preliminary mixing unit. After the mixing is completed, the pharmaceutical raw material powder is deeply crushed and refined by the airflow so that the powder particle size meets the production requirements. No heat is generated during the crushing process, and no dust overflows. During and after the crushing process, the powder can be continuously and fully mixed to meet the production needs of pharmaceutical raw material powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the pharmaceutical raw material powder refining and mixing equipment of the utility model.

[0021] Figure 2 For the utility model Figure 1 Schematic diagram of the local enlarged structure at point A in the middle.

[0022] Figure 3 This is a schematic diagram of the screening impeller driving structure of the utility model.

[0023] Figure numerals: 1. pneumatic conveying unit, 2. first vacuum hopper, 3. second vacuum hopper, 4. bottom valve, 5. exhaust pipe, 6. feed valve, 7. powder collecting unit, 8. feeding pipe, 9. upper valve group, 10. first valve group, 11. second valve group, 12. return pipe, 13. reverse blowing interface, 14. exhaust valve, 15. recoil valve, 16. base, 17. crushing pipe section, 18. separation pipe section, 19. sealing plate, 20. steel wire hose, 21. air bag, 22. compressed air inlet flange, 23. screening impeller, 24. collecting hood, 25. screening motor, 26. mixing tank, 27. feed hopper, 28. electric stirring paddle, 29. secondary collecting unit. DETAILED DESCRIPTION

[0024] Example:

[0025] like Figures 1 to 3 The pharmaceutical raw material powder refining and mixing equipment shown includes:

[0026] Pneumatic conveying unit 1;

[0027] A preliminary mixing unit, wherein the preliminary mixing unit is connected to the conveying pipe of the pneumatic conveying unit 1 through a first blanking valve;

[0028] A collecting hopper, the collecting hopper comprises a first vacuum hopper 2 and a second vacuum hopper 3; a bottom valve 4 is provided at the bottom of the first vacuum hopper 2 and the second vacuum hopper 3, an exhaust pipe 5 is provided on the first vacuum hopper 2 and the second vacuum hopper 3, and a filter is provided inside the exhaust pipe 5; the feeding ends of the first vacuum hopper 2 and the second vacuum hopper 3 are respectively connected to the conveying pipe of the pneumatic conveying unit 1 through a feeding valve 6;

[0029] The airflow pulverizing unit, the bottom valve 4 of the first vacuum hopper 2 is connected to the feed end of the airflow pulverizing unit through a feeding pipe 8, and a discharge valve is provided at the bottom of the airflow pulverizing unit; the discharge valve is connected between the second vacuum hopper 3 and the feed valve 6;

[0030] A powder collecting unit 7, wherein the feeding end of the powder collecting unit 7 is connected to the powder separation end of the airflow pulverizing unit through an intermediate pipe; an upper valve group 9 is provided at the bottom of the powder collecting unit 7, wherein the upper valve group 9 is connected to the middle end of a tee, and the other two ends of the tee are respectively connected to a first valve group 10 and a second valve group 11, wherein the first valve group 10 is connected to the airflow pulverizing unit through a return pipe 12; and the second valve group 11 is connected to a blowing air source.

[0031] When the pharmaceutical raw material powder refining and mixing equipment is working, the raw material powder that has completed preliminary crushing is sent to the preliminary mixing unit, and the raw material powder is mixed once by the preliminary mixing unit. After mixing, the once mixed raw material is driven into the conveying pipe of the pneumatic conveying unit 1 through the first blanking valve, and is sent to the airflow crushing unit through the pneumatic conveying unit 1. The once mixed raw material is airflow crushed by the airflow crushing unit to obtain refined raw material powder, and then, it is screened through the powder separation end of the airflow crushing unit, and the refined powder that passes the screening is sent to the powder collecting unit 7, and the raw material powder that does not pass the screening is re-crushed by high-pressure airflow until all the raw material powder is refined and enters the powder collecting unit 7; when the powder collecting unit 7 completes the collection of all raw material powders, the upper valve group 9 is opened, and the blowing air source is opened to re-collect the raw material powder of the powder collecting unit 7 It is sent to the air flow pulverizing unit, and the air flow pulverizing unit is kept in motion to realize cyclic air flow pulverizing, screening, mixing and collection by the powder collection unit 7; when the cycle reaches the set time, the pressure of the compressed air in the air flow pulverizing unit is reduced, and the compressed air pressure is one-fifth to one-third of the pulverizing compressed air pressure; at this time, the compressed air is used as a hybrid gas, and the compressed air provides power for the secondary mixing of the raw material powder in the air flow pulverizing unit. After the mixing is completed, the compressed air of the air flow pulverizing unit is closed, the discharge valve at the bottom of the air flow pulverizing unit is opened, and the pneumatic conveying unit 1 is opened to send the mixed raw material refined powder to the second vacuum hopper 3, and the second vacuum hopper 3 collects all the processed pharmaceutical raw material powders; finally, compressed air is injected into the second valve group 11 through the blowing air source, and the remaining raw material powder is collected in conjunction with the pneumatic conveying unit 1.

[0032] The powder collecting unit 7 is provided with a reverse blowing interface 13, and the reverse blowing interface 13 is connected to the exhaust valve 14 and the recoil valve 15 through a three-way connection. The exhaust valve 14 is connected to the secondary collecting unit 29, and the exhaust filter hole of the secondary collecting unit 29 is smaller than the exhaust filter hole of the powder collecting unit 7; the recoil valve 15 is connected to the blowing air source.

[0033] When the reverse blowing interface 13 is connected with the exhaust valve 14, the filtered dust can enter the secondary collection unit 29 through the exhaust valve 14 during the process of collecting the raw powder in the powder collecting unit 7, and the dust is collected by the secondary collection unit 29. When the powder collecting unit 7 completes the collection of all the raw powder, it is sent back to the air flow pulverizing unit for secondary mixing; finally, the raw powder is discharged. When discharging, the powder collecting unit 7, the recoil valve 15 and the blowing air source are connected, and the blowing air source is used to recoil the powder collecting unit 7 with compressed air, so that the raw powder left in the powder collecting unit 7 and the upper end of the air flow pulverizing unit is driven into the lower part of the air flow pulverizing unit, and the raw powder that has been refined and fully mixed is driven into the second vacuum hopper 3 through the conveying air provided by the pneumatic conveying unit 1.

[0034] The air flow pulverizing unit includes a pulverizing tube cavity, which is fixed to a base 16 through a support leg; the pulverizing tube cavity includes a pulverizing tube section 17, which is fixed with a separation tube section 18 through a flange, and a sealing plate 19 is fixed on the top of the separation tube section 18, and the discharge valve is arranged at the bottom of the pulverizing tube section 17; a plurality of nozzles are arranged at the lower part of the pulverizing tube section 17; the nozzles are connected to a steel wire hose 20 through a flange; the steel wire hose 20 is connected to an air bag 21, and a sealing plate 19 is arranged on the air bag 21 There is a compressed air inlet flange 22, which is connected to the air source; the feed pipe 8 and the return pipe 12 are arranged at the lower part of the crushing pipe section 17 and above the high-pressure nozzle; a screening impeller 23 is rotatably installed inside the separation pipe section 18; one end of the screening impeller 23 is closed, and the other end is rotatably arranged in the collecting cover 24, and an intermediate pipe and a screening motor 25 that drives the screening impeller 23 to rotate are fixed to the outside of the separation pipe section 18, and the intermediate pipe is connected to the inside of the collecting cover 24.

[0035] During operation, compressed air is pumped into the air bag 21 through the compressed air inlet flange 22, and the compressed air is distributed to each steel wire hose 20 through the air bag 21, and the compressed air is pumped into the nozzle through the steel wire hose 20, and the compressed air is injected into the crushing pipe section 17 at a high speed. Under the action of the high-pressure airflow, the materials collide and crush each other, and no friction heat will occur during the crushing; the crushed raw materials rise to the separation pipe section 18 through the airflow, and at the same time, the screening motor 25 drives the screening impeller 23 to rotate continuously, and at the same time, the crushed raw materials enter the screening impeller 23 through the sieve holes of the screening impeller 23, and then, through the transmission of the compressed air flow and the suction of the powder collection unit 7; the crushed raw materials enter the collecting hopper and are collected by the collecting hopper; the raw materials that do not reach the particle size fall back to the crushing pipe section 17; the high-pressure airflow in the crushing pipe section 17 continues to crush the falling raw materials until all materials reach the particle size requirements.

[0036] The powder collecting unit 7 is a cyclone dust collector or a bag dust collector.

[0037] The secondary collection unit 29 is a cyclone dust collector, a bag dust collector or a water-washing dust removal unit.

[0038] The preliminary mixing unit includes a mixing tank 26, on which a feed hopper 27 and an electric stirring paddle 28 are provided; an on-off valve is provided at the output end of the feed hopper 27; after the preliminary crushing of the pharmaceutical raw material powder, it is fed into the mixing tank 26, and the on-off valve is closed, and the electric stirring paddle 28 is turned on, so that the pharmaceutical raw material powder can be initially stirred at a low speed to avoid heat in the mixing tank 26 due to excessive stirring speed, which affects the efficacy of the pharmaceutical raw material powder; after stirring, it is fed into the airflow crushing unit through the first blanking valve and the pneumatic conveying unit 1 for secondary refinement, crushing and mixing.

[0039] The exhaust pipes 5 of the first vacuum hopper 2 and the second vacuum hopper 3 are both connected to the secondary collecting unit 29. The first vacuum hopper 2 and the second vacuum hopper 3 collect the pharmaceutical raw material powder delivered by the pneumatic conveying unit 1, and discharge the pressurized gas through the exhaust pipe 5. When the pressurized gas is released, the pharmaceutical raw material powder is intercepted by the filter, and the fine powder of the pharmaceutical raw material powder is discharged through the exhaust pipe 5 and collected by the secondary collecting unit 29.

[0040] The above embodiments are only preferred implementations of the present invention, so any equivalent changes or modifications made according to the structures, features and principles described in the scope of application of the present invention are included in the scope of application of the present invention.

Claims

1. A pharmaceutical raw material powder refining and mixing device, characterized in that: include: Pneumatic conveying unit; A preliminary mixing unit, wherein the preliminary mixing unit is connected to the conveying pipe of the pneumatic conveying unit through a first blanking valve; A collecting hopper, the collecting hopper comprising a first vacuum hopper and a second vacuum hopper; a bottom valve is provided at the bottom of the first vacuum hopper and the second vacuum hopper, an exhaust pipe is provided on the first vacuum hopper and the second vacuum hopper, and a filter is provided inside the exhaust pipe; the feeding ends of the first vacuum hopper and the second vacuum hopper are respectively connected to the conveying pipe of the pneumatic conveying unit through the feeding valve; The airflow pulverizing unit, the bottom valve of the first vacuum hopper is connected to the feed end of the airflow pulverizing unit through a feeding pipe, and a discharge valve is provided at the bottom of the airflow pulverizing unit; the discharge valve is connected between the second vacuum hopper and the feed valve; A powder collecting unit, wherein the feeding end of the powder collecting unit is connected to the powder separation end of the airflow pulverizing unit through an intermediate pipe; an upper valve group is arranged at the bottom of the powder collecting unit, the upper valve group is connected to the middle end of the tee, and the other two ends of the tee are respectively connected to the first valve group and the second valve group, the first valve group is connected to the airflow pulverizing unit through a return pipe; the second valve group is connected to the injection air source.

2. The pharmaceutical raw material powder refining and mixing equipment according to claim 1, characterized in that: The powder collecting unit is provided with a reverse blowing interface, which is connected to an exhaust valve and a recoil valve through a tee, and the exhaust valve is connected to a secondary collecting unit, the exhaust filter hole of the secondary collecting unit is smaller than the exhaust filter hole of the powder collecting unit; the recoil valve is connected to a blowing air source.

3. The pharmaceutical raw material powder refining and mixing equipment according to claim 1, characterized in that: The air flow pulverizing unit includes a pulverizing tube cavity, which is fixed to the base by a support leg; the pulverizing tube cavity includes a pulverizing tube section, which is fixed with a separation tube section by a flange, a sealing plate is fixed on the top of the separation tube section, and the discharge valve is arranged at the bottom of the pulverizing tube section; a plurality of nozzles are arranged at the lower part of the pulverizing tube section; the nozzle is connected to a steel wire hose through a flange; the steel wire hose is connected to an air bag, a compressed air inlet flange is arranged on the air bag, and the compressed air inlet flange is connected to an air source; the feed pipe and the return pipe are arranged at the lower part of the pulverizing tube section and above the high-pressure nozzle; a screening impeller is rotatably installed inside the separation tube section; one end of the screening impeller is closed, and the other end is rotatably arranged in a collecting cover, an intermediate pipe and a screening motor for driving the screening impeller to rotate are fixed to the outside of the separation tube section, and the intermediate pipe is connected to the inside of the collecting cover.

4. The pharmaceutical raw material powder refining and mixing equipment according to claim 1, characterized in that: The powder collecting unit is a cyclone dust collector or a bag dust collector.

5. The pharmaceutical raw material powder refining and mixing equipment according to claim 2, characterized in that: The secondary collection unit is a cyclone dust collector, a bag dust collector or a water-washing dust removal unit.

6. The pharmaceutical raw material powder refining and mixing equipment according to claim 1, characterized in that: The preliminary mixing unit comprises a mixing tank, on which a feed hopper and an electric stirring paddle are arranged; and a switch valve is arranged at the output end of the feed hopper.

7. The pharmaceutical raw material powder refining and mixing equipment according to claim 1, characterized in that: The exhaust pipes of the first vacuum hopper and the second vacuum hopper are both connected to the secondary collection unit.

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