Medicine mixer

Abstract

The utility model provides a medicine mixer, which relates to the technical field of medicine mixing equipment, and comprises a cylinder body, a rotating shaft, a scraper blade and a rotation driving mechanism, and the cylinder body is provided with a feed port and a discharge port; stirring rods are fixed on the side wall of the rotating shaft in the radial direction, a fixing plate is connected to the ends, away from the rotating shaft, of the stirring rods, and a containing cavity is formed in the fixing plate; limiting plates are fixed to the inner ends of the scrapers, and the outer ends of the scrapers are used for abutting against the inner wall of the barrel. A compression spring is arranged in the accommodating cavity; the output end of the rotation driving mechanism is in transmission connection with the rotating shaft for driving the rotating shaft to rotate; according to the utility model, medicines in the cylinder body can be stirred, so that the mixing uniformity of the medicines is improved; and moreover, the scraping plate can abut against the inner wall of the barrel under the action of the compression spring, the adhered solid powder on the inner wall of the barrel is scraped and cleaned, it is guaranteed that no solid powder adheres to the inner wall of the barrel, and cross contamination caused in the subsequent mixing process of other drugs is avoided.

Description

Technical Field

[0001] This utility model relates to the field of drug mixing equipment technology, and in particular to a drug mixing device. Background Technology

[0002] A pipeline mixer is a device used to mix multiple fluids or powders together. It typically consists of a piping system, a mixing chamber, and a stirring or mixing device. Its working principle is to transport different fluids or powders through pipelines to the mixing chamber, where they are thoroughly mixed by stirring or other mixing devices, thereby achieving a uniform mixture of different components.

[0003] Traditional pipeline mixers suffer from a technical problem during use: the reagent adheres to the inner wall of the mixer. If solid reagent adheres to the inner wall, it may contaminate different materials during subsequent mixing processes, thus affecting the composition and quality of the product.

[0004] Therefore, in response to the problems mentioned above, a mixing device for cleaning the inner wall is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a drug mixer to solve the problems existing in the prior art. It can stir the drugs in the cylinder and improve the uniformity of drug mixing. Moreover, it can make the scraper abut against the inner wall of the cylinder under the action of the compression spring to scrape off the solid powder adhering to the inner wall of the cylinder, ensuring that there is no solid powder adhering to the inner wall of the cylinder and avoiding cross-contamination of other drug mixing processes in the subsequent process.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] A mixing device includes a cylinder, a rotating shaft, a scraper, and a rotation drive mechanism. The cylinder has an inlet and an outlet. The rotating shaft is coaxially disposed within the cylinder. A stirring rod is radially fixed to the side wall of the rotating shaft. A fixing plate is connected to one end of the stirring rod away from the rotating shaft. The fixing plate has a receiving cavity inside. A limiting part and an opening communicating with the receiving cavity are provided on the radially opposite surface of the fixing plate to the inner wall of the cylinder. The limiting part is arranged around the opening. A limiting plate is fixed to the inner end of the scraper along the radial direction of the cylinder. The outer end of the scraper is used to abut against the inner wall of the cylinder. The limiting plate is slidably disposed within the receiving cavity along the radial direction of the cylinder. The limiting part radially limits the limiting plate. A compression spring is also disposed inside the receiving cavity. One end of the compression spring is fixedly connected to the end face of the limiting plate, and the other end is fixedly connected to the inner wall of the receiving cavity near the rotating shaft. The output end of the rotation drive mechanism is connected to the rotating shaft for driving the rotating shaft to rotate.

[0008] In one embodiment, the fixing plate and the scraper are both arranged parallel to the axial direction of the rotating shaft, and multiple scrapers are evenly arranged along the circumference of the rotating shaft. The scrapers are connected to the rotating shaft by multiple stirring rods.

[0009] In one embodiment, the rotation drive mechanism includes a rotating motor fixed to the outside of the cylinder, and the drive shaft of the rotating motor extends into the cylinder; a driving bevel gear is fixed to the end of the drive shaft, and a driven bevel gear that meshes with the driving bevel gear is coaxially fixed on the rotating shaft.

[0010] In one embodiment, the driven bevel gear is fixed in the middle of the rotating shaft, and stirring rods and scrapers are provided on both axial sides of the driven bevel gear on the rotating shaft.

[0011] As one embodiment, it also includes a housing fixed inside the cylinder, the driving bevel gear and the driven bevel gear are both located inside the housing, and the drive shaft and the rotating shaft are rotatably sealed to the housing.

[0012] In one embodiment, the feed inlet and the discharge outlet are located at opposite axial ends on the side wall of the cylinder, with the feed inlet facing upwards and the discharge outlet facing downwards.

[0013] As one embodiment, a feed pipe and a discharge pipe are vertically arranged at the feed inlet and the discharge outlet, respectively.

[0014] As one embodiment, the cylinder has openings at both axial ends, and flanges fixedly connected to the cylinder are provided at the openings. An annular flange extending radially into the flange is provided on the inner wall of the flange near the cylinder. A rotating disk is also threaded onto the inner wall of the flange, and the inner end of the rotating disk abuts against the annular flange.

[0015] As one embodiment, a sealing gasket is provided between the annular flange and the inner end of the rotating disk.

[0016] As one embodiment, a handle is provided on the outer end of the rotating disk.

[0017] This utility model has the following technical advantages over the prior art:

[0018] This invention utilizes a radially arranged stirring rod on a rotating shaft to stir the medicine inside the cylinder, improving the uniformity of drug mixing. Furthermore, a fixing plate and a scraper are installed at the end of the stirring rod, with a compression spring between the inner wall of the fixing plate and the scraper. This allows the scraper to abut against the inner wall of the cylinder under the action of the compression spring, effectively scraping away any adhering solid powder and ensuring that no solid powder adheres to the inner wall, thus preventing cross-contamination during subsequent drug mixing processes. Moreover, the compression spring ensures that the scraper abuts against the inner wall of the cylinder, preventing gaps from forming due to scraper wear that would prevent the complete removal of adhering powder. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the mixing device in one embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of the mixing device in one embodiment of the present invention;

[0022] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This is a schematic diagram of the cooperation structure between the scraper and the fixing plate in one embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the fit between the flange and the rotating disk in one embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Cylinder; 2. Rotary motor; 3. Drive shaft; 4. Driving bevel gear; 5. Shell; 6. Driven bevel gear; 7. Rotating shaft; 8. Stirring rod; 9. Fixing plate; 10. Receiving cavity; 11. Compression spring; 12. Limiting plate; 13. Scraper; 14. Flange; 15. Sealing gasket; 16. Rotating disc; 17. Handle; 18. Fixing ring; 19. Feed pipe. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] The purpose of this invention is to provide a drug mixer to solve the problems existing in the prior art. It can stir the drugs in the cylinder and improve the uniformity of drug mixing. Moreover, it can make the scraper abut against the inner wall of the cylinder under the action of the compression spring to scrape off the solid powder adhering to the inner wall of the cylinder, ensuring that there is no solid powder adhering to the inner wall of the cylinder and avoiding cross-contamination of other drug mixing processes in the subsequent process.

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figures 1-5 As shown, this embodiment provides a mixing device, including a cylinder 1, a rotating shaft 7, a scraper 13, and a rotation drive mechanism. The cylinder 1 is usually horizontally arranged and has an inlet and an outlet. The inlet is used to put in the medicine to be mixed, and the outlet is used to release the mixed medicine. The rotating shaft 7 is coaxially arranged inside the cylinder 1. A stirring rod 8 is radially fixed on the side wall of the rotating shaft 7. A fixing plate 9 is connected to one end of the stirring rod 8 away from the rotating shaft 7. The fixing plate 9 has a receiving cavity 10 inside. The fixing plate 9 is cuboid in shape. A limiting part and an opening communicating with the receiving cavity 10 are provided on the plate surface of the fixing plate 9 that is radially opposite to the inner wall of the cylinder 1. The limiting part is arranged around the opening. The limiting part is actually the plate surface of the fixing plate 9 with the opening, except for The other parts besides the opening; the center position of the opening is the same as the center position of this plate surface, and there is a certain gap between the edge of the opening and the edge of the adjacent plate surface; along the radial direction of the cylinder 1, the inner end of the scraper 13 is fixed with a limiting plate 12, and the outer end of the scraper 13 is used to abut against the inner wall of the cylinder 1. The limiting plate 12 is slidably disposed in the receiving cavity 10 along the radial direction of the cylinder 1. The limiting part on the fixing plate 9 radially limits the limiting plate 12 to prevent the limiting plate 12 from falling out of the receiving cavity 10 from the opening; a compression spring 11 is also provided inside the receiving cavity 10. One end of the compression spring 11 is fixedly connected to the end face of the limiting plate 12, and the other end is fixedly connected to the inner wall of the receiving cavity 10 near the rotating shaft 7. This inner wall is parallel to the plate surface where the opening is located. The elastic force of the compression spring 11 can make the scraper 13 extend from the opening and abut against the inner wall of the cylinder 1. The cross-sectional shape and size of the scraper 13 along the opening direction are adapted to the shape and size of the opening. The output end of the rotation drive mechanism is connected to the rotating shaft 7 for driving the rotating shaft 7 to rotate.

[0031] In this embodiment, a stirring rod 8 is radially arranged on the rotating shaft 7 to stir the medicine inside the cylinder 1, improving the uniformity of drug mixing. Furthermore, a fixing plate 9 and a scraper 13 are provided at the end of the stirring rod 8, and a compression spring 11 is installed between the inner wall of the fixing plate 9 and the scraper 13. This allows the scraper 13 to abut against the inner wall of the cylinder 1 under the action of the compression spring 11, scraping away and cleaning the adhering solid powder on the inner wall of the cylinder 1, ensuring that no solid powder adheres to the inner wall of the cylinder 1, and avoiding cross-contamination in subsequent drug mixing processes. Moreover, when the scraper 13 wears down after prolonged use, the compression spring 11 in this embodiment ensures that the scraper 13 abuts against the inner wall of the cylinder 1, preventing gaps from forming due to scraper 13 wear, which would prevent the complete removal of adhering powder.

[0032] In this embodiment, the scraper 13 can be made of a flexible material, such as rubber, to avoid scratching the inner wall of the cylinder 1. Initially, after the end of the scraper 13 is in contact with the inner wall of the cylinder 1, there is a certain gap between the limiting plate 12 and the surface of the opening. This gap gradually decreases as the rubber wears down. If the limiting plate 12 and the surface of the opening are in complete contact, and the scraper 13 experiences severe wear, then the scraper 13 needs to be replaced promptly. To facilitate the replacement of the scraper 13 and the compression spring 11, in this embodiment, the fixing plate 9 is formed by splicing together plate bodies.

[0033] In one embodiment, the scraper 13 and the fixing plate 9 are both arranged parallel to the axial direction of the rotating shaft 7, and multiple scrapers 13 are evenly arranged along the circumference of the rotating shaft 7. The scrapers 13 and the rotating shaft 7 are connected by multiple stirring rods 8. Typically, 4 to 6 scrapers 13 and fixing plates 9 can be provided. In this embodiment, 4 scrapers 13 and 4 fixing plates 9 are provided.

[0034] In one embodiment, the rotation drive mechanism includes a rotating motor fixed to the outside of the cylinder 1. The rotating motor is fixed to the outer wall of the cylinder 1. The drive shaft 3 of the rotating motor extends into the cylinder 1; a driving bevel gear 4 is fixed to the end of the drive shaft 3, and a driven bevel gear 6, meshing with the driving bevel gear 4, is coaxially fixed to the rotating shaft 7. The rotation of the rotating motor drives the driving bevel gear 4 to rotate via the output shaft, which in turn drives the driven bevel gear 6 to rotate. When the driven bevel gear 6 rotates, it drives the rotating shaft 7 to rotate, thereby driving the stirring rod 8 to stir the medicine, and the scraper 13 to scrape and clean the inner wall of the cylinder 1.

[0035] In this embodiment, the driven bevel gear 6 is fixed in the middle of the rotating shaft 7. On the rotating shaft 7, stirring rods 8 and scrapers 13 are provided on both axial sides of the driven bevel gear 6.

[0036] This embodiment includes a housing 5 fixed inside a cylindrical body 1. Specifically, the housing 5 can be fixed inside the cylindrical body 1 by a column (the column is inside the cylindrical body 1 and is not shown). Both the driving bevel gear 4 and the driven bevel gear 6 are located inside the housing 5, and the drive shaft 3 and the rotating shaft 7 are rotatably sealed to the housing 5. By providing a housing 5 inside the cylindrical body 1 to accommodate the driving bevel gear 4 and the driven bevel gear 6, this embodiment avoids the driving bevel gear 4 and the driven bevel gear 6 being immersed in a mixed drug solution, thus preventing corrosion and extending their service life. Furthermore, the housing 5 also supports the rotating shaft 7, and an axial limiting mechanism can be provided between the housing 5 and the rotating shaft 7 to axially limit the rotation of the shaft 7, preventing misalignment of the driving bevel gear 4 and the driven bevel gear 6 due to axial movement, and ensuring stable rotation of the shaft 7. The axial limiting mechanism for the rotating shaft 7 is a common structure in the art, and this embodiment does not limit its use. In addition to using the housing 5 to support the rotating shaft 7, columns can also be set at both ends of the rotating shaft 7 to support it.

[0037] In this embodiment, the inlet and outlet are located at opposite axial ends on the side wall of the cylinder 1, with the inlet facing upwards and the outlet facing downwards. A fixing ring 18 is fixed at both the inlet and outlet, vertically connected to the inlet pipe 19 or the outlet pipe. The connection between the fixing ring 18 and the inlet pipe 19 or outlet pipe can be threaded (the outlet and outlet pipe are not shown in the figure). An inlet valve and an outlet valve are respectively installed on the inlet pipe 19 and the outlet pipe. In this embodiment, after the medicine to be mixed is added to the cylinder 1, it is usually necessary to stir and mix for a specific period before opening the outlet valve to completely discharge the material. Then, clean water is injected into the cylinder 1, and the rotary motor 2 is turned on again to stir the water. The scraper 13 is used to clean the inner wall of the cylinder 1. After the clean water is discharged, other medicines can be added for the next mixing process. Of course, the inside of the cylinder 1 can be cleaned multiple times with clean water.

[0038] In this embodiment, the cylinder 1 has openings at both axial ends, and flanges 14 are fixedly connected to the cylinder 1 at the openings. An annular flange extending radially inwards is provided on the inner wall of the flange 14 near the cylinder 1. A rotating disk 16 is threadedly connected to the inner wall of the flange 14, and the inner end of the rotating disk 16 abuts against the annular flange. A sealing gasket 15 is provided between the annular flange and the inner end of the rotating disk 16 to prevent drug leakage from the opening.

[0039] To facilitate the rotation of the rotating disk 16, a handle 17 is provided on the outer end of the rotating disk 16 in this embodiment.

[0040] Any adaptive changes made according to actual needs are within the protection scope of this utility model.

[0041] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A chemical mixer characterized by, include: A cylindrical body, wherein a feed inlet and a discharge outlet are provided on the cylindrical body; A rotating shaft is coaxially disposed within the cylinder. A stirring rod is radially fixed to the side wall of the rotating shaft. A fixing plate is connected to one end of the stirring rod away from the rotating shaft. The fixing plate has a receiving cavity inside. A limiting part and an opening communicating with the receiving cavity are provided on the plate surface of the fixing plate radially facing the inner wall of the cylinder. The limiting part is disposed around the opening. A scraper is provided along the radial direction of the cylinder. A limiting plate is fixed to the inner end of the scraper, and the outer end of the scraper is used to abut against the inner wall of the cylinder. The limiting plate is slidably disposed in the receiving cavity along the radial direction of the cylinder, and the limiting part limits the limiting plate radially. A compression spring is also provided inside the receiving cavity. One end of the compression spring is fixedly connected to the end face of the limiting plate, and the other end is fixedly connected to the inner wall of the receiving cavity near the rotating shaft. And a rotation drive mechanism, the output end of which is connected to the rotating shaft for driving the rotating shaft to rotate.

2. The chemical mixer of claim 1, wherein The fixed plate and the scraper are both arranged parallel to the axial direction of the rotating shaft, and multiple scrapers are evenly arranged along the circumference of the rotating shaft. The scrapers are connected to the rotating shaft by multiple stirring rods.

3. The chemical mixer of claim 1, wherein The rotation drive mechanism includes a rotating motor fixed to the outside of the cylinder, and the drive shaft of the rotating motor extends into the cylinder; a driving bevel gear is fixed to the end of the drive shaft, and a driven bevel gear that meshes with the driving bevel gear is coaxially fixed on the rotating shaft.

4. The chemical dispenser of claim 3, wherein The driven bevel gear is fixed in the middle of the rotating shaft, and the stirring rod and the scraper are provided on both axial sides of the driven bevel gear on the rotating shaft.

5. The chemical dispenser of claim 4, wherein It also includes a housing fixed inside the cylinder, the driving bevel gear and the driven bevel gear are both located inside the housing, and the drive shaft and the rotating shaft are rotatably sealed to the housing.

6. The chemical mixer of claim 1, wherein The feed inlet and the discharge outlet are located at opposite ends of the axial direction on the side wall of the cylinder, with the feed inlet facing upwards and the discharge outlet facing downwards.

7. The chemical dispenser of claim 6, wherein The inlet and outlet are respectively vertically installed with an inlet pipe and an outlet pipe.

8. The chemical dispenser of claim 1, wherein Both ends of the cylinder have openings, and flanges are fixedly connected to the cylinder at the openings. An annular flange extending radially into the inside of the flange is provided on the inner wall of the flange near the cylinder. A rotating disk is also threaded onto the inner wall of the flange, and the inner end of the rotating disk abuts against the annular flange.

9. The chemical dispenser of claim 8, wherein, A sealing gasket is provided between the annular flange and the inner end of the rotating disk.

10. The chemical dispenser of claim 9, wherein, A handle is provided on the outer end of the rotating disk.

Images