Double-shaft ointment stirring device

Abstract

The present invention discloses a double-shaft ointment stirring device, which comprises a base, on which a rotatable first stirring shaft and a rotatable second stirring shaft are provided. A first stirring rod is provided on the first stirring shaft, and a second stirring rod is provided on the second stirring shaft. Both the first stirring shaft and the second stirring shaft are eccentrically provided on a turntable, and the turntable is rotationally connected to a first driving device. The first driving device is for driving the rotation of the turntable. The outer edges of the first stirring rod and the second stirring rod coincide with the inner edge of the container for containing the ointment. This stirring device has a wide application range, no dead angle of stirring, exhausts the ointment during stirring, the stirred ointment is fully mixed, uniform, has few pores, the force applied to the stirring shaft is small, has a long service life, and the stirring rod is easy to clean.

Description

Technical Field

[0001] The present invention relates to the technical field of paste manufacturing, and particularly to a double-shaft ointment stirring device.

Background Art

[0002] The preparation of ointment is a very important process in the manufacturing process of the paste. Whether the stirring of the ointment is sufficient and uniform directly determines the stability of the drug volume, that is, the dosage, which is an inevitable requirement for the therapeutic drug volume and also the content that the pharmaceutical supervision department pays attention to. The conventional ointment stirring device usually has a single-axis stirring structure. In order to increase the stirring degree of the single-axis stirring rod, a plurality of stirring teeth can be provided on the single-axis stirring rod, or a plurality of stirring rods can be protruded. In such a stirring structure, when stirring an ointment with excellent fluidity, the stirring unevenness is not obvious. When stirring an ointment with slightly poor fluidity or slightly high viscosity, since there is no fitting between the edges of the stirring teeth or the stirring rods and the inner wall of the container (hereinafter abbreviated as the container) for containing the ointment, the ointment is likely to adhere to the inner wall of the container, forming a stirring dead angle and resulting in uneven stirring of the ointment. Therefore, the application range of the conventional ointment stirring device is very narrow. Even if the edges of the stirring teeth or the stirring rods are installed to fit the inner wall of the container, the stirring effect is small. Since the upper and lower stirring teeth and the upper and lower stirring rods do not have a consistent structure, when rotating, it is close to the pattern of parallel movement and mixing and stirring. Stirring only occurs in the range of the parallel area where the stirring teeth and the stirring rods can contact and the vicinity thereof, and the mixing ability of the ointment in the other vertical areas is significantly weakened. On the other hand, with this stirring structure, it is impossible to stir highly viscous ointments such as gel ointment, honey ointment, and rubber ointment. Even if the conventional stirring device can forcibly stir a highly viscous ointment, by providing a very large number of stirring teeth on the stirring shaft, the entire ointment in the container can be stirred uniformly. At this time, the torque applied to the stirring shaft and the single stirring shaft cause the entire machine to vibrate greatly due to the unbalanced force, which greatly affects the life of the stirring motor. It takes a very long time to stir a highly viscous ointment uniformly, and it also affects the drug effect. Even if the conventional stirring device can stir a highly viscous ointment uniformly, a large amount of air is mixed in during stirring, resulting in the generation of pores and affecting the quality and dosage of the paste. Therefore, the conventional stirring device cannot exhaust the ointment. Also, when stirring a highly viscous ointment with the conventional stirring device, the phenomenon that the ointment easily rises along the stirring rod is common, which further affects the uniformity of the ointment stirring and also causes trouble for the later cleaning of the stirring device.

Summary of the Invention

Problems to be Solved by the Invention

[0003] The object of the present invention is to provide a double-shaft ointment stirring device with a wide application range, no stirring dead angle, capable of exhausting the ointment during stirring, the stirred ointment being sufficiently mixed, uniform, having few pores, the force applied to the stirring shaft being small, a long service life, and the stirring rod being easy to clean.

Means for Solving the Problems

[0004] In order to achieve the above object, the present invention adopts the following technical solutions. A double-shaft ointment stirring device, comprising a base, a rotatable first stirring shaft and a rotatable second stirring shaft provided on the base, a first stirring rod provided on the first stirring shaft, and a second stirring rod provided on the second stirring shaft. Both the first stirring shaft and the second stirring shaft are eccentrically provided on a turntable, and the turntable is rotationally connected to a first driving device for driving the rotation of the turntable. The outer edges of the first stirring rod and the second stirring rod coincide with the inner edge of a container for containing the ointment.

[0005] Preferably, the outer edges of the first stirring rod and the second stirring rod are substantially in contact with the inner edge of the container for containing the ointment, the first stirring shaft and the second stirring shaft are arranged axially symmetrically, and both the first stirring rod and the second stirring rod are basically in an S shape or an arc hook shape. Preferably, both the first stirring rod and the second stirring rod are rotationally connected to a second driving device. Preferably, the first stirring shaft is rotationally connected to a first drive gear, the second stirring shaft is rotationally connected to a second drive gear, both the first drive gear and the second drive gear are rotationally connected to a second propeller shaft, the second propeller shaft is rotationally connected to a second drive device, and by driving the second propeller shaft, the second drive device drives the rotation of the first drive gear and the second drive gear, further drives the rotation of the first stirring shaft and the second stirring shaft, and further realizes the rotation of the first stirring rod and the second stirring rod.

[0006] Preferably, the turntable is rotationally connected to a first propeller shaft having a hollow structure, the first propeller shaft is rotationally connected to a first drive device, and by driving the first propeller shaft, the first drive device drives the rotation of the turntable, further causes the first stirring rod and the second stirring rod on the turntable to perform a rotational movement around the axis. The second propeller shaft is arranged on the first propeller shaft and is provided coaxially with the first propeller shaft. Preferably, both the first drive gear and the second drive gear are meshed with a common gear, and the common gear is provided on the second propeller shaft. Preferably, both the first stirring rod and the second stirring rod are provided with cutting edges extending along the extending direction of the first stirring rod and the second stirring rod. Preferably, the base is further provided with a liftable surface plate, and the surface plate is provided below the first stirring rod and the second stirring rod.

[0007] Preferably, the first stirring shaft and the second stirring shaft are fixed to the turntable via a first bearing, a second bearing is arranged on the second propeller shaft, the outer ring of the second bearing is fixed to the first propeller shaft, and the second propeller shaft and the first propeller shaft realize relative rotation via the second bearing. More preferably, the first propeller shaft is connected to the first drive device via a transmission mechanism, the first drive device is a first drive motor, and the second drive device is a second drive motor.

Advantages of the Invention

[0008] In the above aspect, the first stirring shaft and the second stirring shaft are provided on the turntable in an eccentrically symmetric manner. As a result, the first stirring rod rotates about its own axis by the first stirring shaft, and a substantially cylindrical first stirring area that is substantially in contact with the inner edge of the container is formed. The first stirring rod stirs and mixes the ointment in the first stirring area and the vicinity. The second stirring rod rotates about its own axis by the second stirring shaft, and forms a substantially cylindrical second stirring area that is in contact with the inner peripheral edge of the container. The second stirring rod stirs and mixes the ointment in the second stirring area and nearby. The turntable rotates the first stirring shaft and the second stirring shaft, causing the first stirring area and the second stirring area to perform circular motion along the inner peripheral edge of the container, so that the first stirring area and the second stirring area pass through all regions of the inner peripheral edge of the container. Alternatively, only the first stirring rod and the second stirring rod perform circular motion along the inner peripheral edge of the container to achieve stirring and mixing of all the ointment in the container. The first stirring rod and the second stirring rod are designed to integrally penetrate vertically in an S shape or an arc hook shape so as to rotate about their own axes in consideration of any vertical area within their respective stirring areas, scraping the ointment at the inner edge of the container so that there is no dead angle for stirring. By arranging the second propeller shaft on the first propeller shaft, relative rotation between the second propeller shaft and the first propeller shaft is achieved, and independent rotation control of the first stirring shaft and the second stirring shaft and independent rotation control of the turntable are achieved, causing the first stirring area and the second stirring area to perform circular motion along the inner edge of the container. Alternatively, three modes of switching are performed: only the first stirring rod and the second stirring rod perform circular motion along the inner peripheral edge of the container, and only the first stirring rod and the second stirring rod rotate about their own axes. When the first stirring rod and the second stirring rod perform circular motion along the inner peripheral edge of the container, there is a pulling action on the ointment. Similar to a life scene, when making fabric, in order to make the fabric reach a faster, uniform, and smooth state, the operation of continuously pulling one piece of fabric on the other is continued to make the mixing of the ointment faster and more uniform. The substantially S-shaped or arc hook-shaped first stirring rod and second stirring rod, in cooperation with their own cutting edges, have a conveying force similar to a spiral when rotating about their own axes, which is different from the parallel stirring of ordinary stirring teeth.Therefore, when rotating around its own axis and performing circular motion along the inner peripheral edge of the container, a substantially spiral conveying force and a rotary cutting force are generated from top to bottom, preventing the ointment from rising from bottom to top along the stirring rod. At the same time as the ointment is exhausted, the number of air holes in the ointment is significantly reduced, the mixing of the medicine becomes more uniform, and the stirring rod is also more likely to be cleaned. Also, when the first stirring rod rotates around its own axis by the first stirring shaft, the first stirring rod only stirs and mixes the ointment within the first stirring area and near the first stirring area. The second stirring rod does not stir all the ointment in the container simultaneously with a single stirring shaft as in the prior art, but only stirs and mixes the ointment within the second stirring area and near the second stirring area. For this reason, the forces applied to the first stirring rod and the second stirring rod are significantly reduced, and the first stirring rod and the second stirring rod form a balance effect with each other, significantly reducing vibration. Therefore, this stirring device is suitable not only for stirring ointments with good fluidity but also for stirring ointments with poor fluidity and high viscosity.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0010] Hereinafter, the present invention will be further described with reference to the drawings. As shown in FIGS. 1 to 5, this double-shaft ointment stirring device includes a base 1, and is provided with a first stirring shaft 2 rotatable about its own axis and a second stirring shaft 3 rotatable about its own axis on the base 1. The first stirring shaft 2 is provided with a first stirring rod 21 having a substantially S-shaped or arc hook shape. The second stirring shaft 3 is provided with a second stirring rod 31 having a substantially S-shaped or arc hook shape.

[0011] The first stirring shaft 2 and the second stirring shaft 3 are eccentrically provided on a turntable 4, and the turntable 4 is rotationally connected to a first driving device 5. In order to drive the rotation of the first driving device 5 and the turntable 4, it is preferably a first driving motor. The first stirring shaft 2 and the second stirring shaft 3 are symmetrically provided, and the outer edge 22 of the first stirring rod and the outer edge 32 of the second stirring rod fit the inner edge of the container 10 for containing the ointment. In this state, the outer edge 22 of the first stirring rod and the outer edge 32 of the second stirring rod are substantially in contact with the inner edge of the container 10. When the first stirring rod 21 rotates, the outer edge 22 of the first stirring rod may extend to approximately the center of the container 10, or may approach the second stirring shaft 3 beyond the center of the container 10.

[0012] When the second stirring rod 31 rotates, the outer edge 32 of the second stirring rod may extend substantially to the center of the container 10, or may approach the first stirring shaft 2 beyond the center of the container 10. However, the outer edge 22 of the first stirring rod and the outer edge 32 of the second stirring rod do not collide or interfere with each other during rotation. In this way, the first stirring rod 21 rotates about its own axis by the first stirring shaft 2, and a substantially cylindrical first stirring area that is substantially in contact with the inner peripheral edge of the container 10 is formed.

[0013] The first stirring rod 21 stirs and mixes the ointment in the first stirring area and the vicinity thereof. The second stirring rod 31 rotates about its own axis by the second stirring shaft 3, and forms a substantially cylindrical second stirring area that is in close contact with the inner peripheral edge of the container 10. The second stirring rod 31 stirs and mixes the ointment in the second stirring area and the vicinity thereof. The first driving device 5 drives the rotation of the turntable 4, further rotates the first stirring shaft 2 and the second stirring shaft 3, and further causes the first stirring area and the second stirring area to perform circular motion along the inner peripheral edge of the container, so that the first stirring area and the second stirring area pass through all regions of the inner peripheral edge of the container.

[0014] Alternatively, only the first stirring rod 21 and the second stirring rod 31 perform circular motion along the inner peripheral edge of the container. Considering any vertical area within their respective stirring areas, the first stirring rod 21 and the second stirring rod 31 are designed to be integrally penetrated vertically in an S shape or an arc hook shape so as to rotate about their own axes, scraping the ointment on the inner peripheral edge of the container 10, preventing the ointment from adhering to the inner peripheral edge of the container 10, and not affecting the uniformity of the mixing of the ointment. Therefore, this stirring structure has no dead angle of stirring and can realize the stirring and mixing of all the ointment in the container 10.

[0015] When the fluidity of the ointment to be stirred is poor, when the first stirring rod 21 and the second stirring rod 31 perform circular motion along the inner peripheral edge of the container 10, there is also a pulling action on the stirring medicine. Similar to the life scene, when making dough, in order to make the dough smoother, faster, and more uniform, the operation of pulling one piece of dough to the other is continuously carried out. By combining these two motion states, the mixing of the ointment becomes faster and more uniform. The first stirring rod 21 and the second stirring rod 31 in a substantially S shape or an arc hook shape have a conveying force similar to a spiral when rotating about their own axes. Different from the parallel stirring of ordinary stirring teeth, when rotating about their own axes and performing circular motion along the inner peripheral edge of the container, they generate a conveying force similar to a spiral, forcing the ointment to exhaust air and reducing the pores in the ointment.

[0016] Further, when the first stirring shaft 21 rotates about its own axis by the first stirring shaft 2, the first stirring shaft 21 stirs and mixes only the ointment within the first stirring area and in the vicinity of the first stirring area. The second stirring rod 31 does not stir all the ointment in the container simultaneously with a single stirring shaft as in the prior art, but stirs and mixes only the ointment within the second stirring area and in the vicinity of the second stirring area. Therefore, the forces applied to the first stirring rod 21 and the second stirring rod 31 are significantly reduced, and the first stirring rod 21 and the second stirring rod 31 form a balance effect with each other, significantly reducing vibration.

[0017] In a preferred embodiment, both the first stirring rod 21 and the second stirring rod 31 are rotationally connected to the second driving device 6. The second driving device 6 is preferably a second driving motor. Specifically, the first stirring shaft 2 is rotationally connected coaxially with the first driving gear 23. The second stirring shaft 3 is rotationally connected coaxially with the second driving gear 33. Both the first driving gear 23 and the second driving gear 33 are rotationally connected to the second propeller shaft 34. The second propeller shaft 34 is rotationally connected to the second driving device 6. By driving the second propeller shaft 34, the second driving device 6 simultaneously rotationally drives the first driving gear 23 and the second driving gear 33, drives the rotation of the first stirring shaft 2 and the second stirring shaft 3, and further realizes the rotation of the first stirring rod 21 and the second stirring rod 31.

[0018] A common gear 35 coaxial with the second propeller shaft 34 is installed, and the first drive gear 23 and the second drive gear 33 are meshed with the common gear 35. In this way, by driving the second propeller shaft 34, the first drive gear 23 and the second drive gear 33 can be simultaneously rotationally driven, and the first stirring shaft 2 and the second stirring shaft 3 can be symmetrically and balancedly rotated in the same direction. Also, collision interference between the outer edge 22 of the first stirring rod and the outer edge 32 of the second stirring rod during rotation can be avoided.

[0019] In a preferred embodiment, the turntable 4 is rotatably connected to a first propeller shaft 41 having a hollow structure. The first propeller shaft 41 is rotatably connected to a first driving device 5. The first driving device 5 drives the first propeller shaft 41 to drive the rotation of the turntable 4, thereby causing the first stirring rod 21 and the second stirring rod 31 on the turntable 4 to perform a rotational movement around the axis. The second propeller shaft 34 is disposed on the first propeller shaft 41 and is coaxially disposed with the first propeller shaft 41, whereby the individual rotation control of the first stirring shaft 2 and the second stirring shaft 3 and the individual rotation control of the turntable 4 are realized, and further, the first stirring area and the second stirring area are realized when making a circular motion along the inner peripheral edge of the container.

[0020] Alternatively, by switching among three modes: making only the first stirring rod 21 and the second stirring rod 31 perform a circular motion along the inner peripheral edge of the container, and making only the first stirring rod 21 and the second stirring rod 31 rotate around their own axes, the mixing of the ointment can be made faster and more uniform. To enhance the rotational reliability of each member, the first stirring shaft 2 and the second stirring shaft 3 are respectively fixed to the turntable 4 via two to three first bearings 24, the second bearing 36 is disposed on the second propeller shaft 34, and the outer ring of the second bearing 36 is fixed to the first propeller shaft 41. By installing the second bearing 36, relative rotation between the second propeller shaft 34 and the first propeller shaft 41 is realized. The second propeller shaft 34 protrudes from the first propeller shaft 41 and is rotatably connected to a second driving device 6. The first propeller shaft 41 is connected to the first driving device 5 via a transmission mechanism 43 to avoid position interference between the first driving device 5 and the second driving device 6. This transmission mechanism 43 may be a gear transmission, or may be a chain transmission or a belt transmission.

[0021] In a preferred embodiment, the base 1 is provided with an elevating surface plate 7, and the surface plate 7 is provided below the first stirring rod 21 and the second stirring rod 31, and places and elevates the container 10 to realize the insertion of the first stirring rod 21 and the second stirring rod 31 into the container and the detachment from the container.

[0022] In a preferred embodiment, the first stirring rod 21 and the second stirring rod 31 are further provided with cutting edges 8 extending along the extending directions of the first stirring rod 21 and the second stirring rod 31. Two to four cutting edges 8 can be provided, and the outermost cutting edge is in contact with the inner edge of the container, which can further enhance the effect of the first stirring rod 21 and the second stirring rod 31 scraping the inner wall of the container. At the same time, by combining the S-shaped or arc hook-shaped first stirring rod 21 and the second stirring rod 31, instead of directly rotary cutting the entire arc surface of the first stirring rod 21 and the second stirring rod 31 with the ointment, when rotating around its own axis and making a circular motion along the inner peripheral edge of the container, a substantially spiral conveying force from top to bottom and a rotary cutting force similar to a cutting edge are generated. While exhausting the ointment, it can effectively prevent the ointment from rising in the vertical direction along the stirring rod, further improving the uniformity of the stirring of the ointment and making it easier to clean the stirring rod.

[0023] In the above technology, after placing the ointment to be stirred in the container 10, the surface plate 7 is raised, and the first stirring rod 21 and the second stirring rod 31 are inserted into the container 10. The rotation of the second driving device 6 is controlled, the second driving device 6 drives the second propeller shaft 34, the first driving gear 23 and the second driving gear 33 are simultaneously driven to rotate, and further the first stirring shaft 2 and the second stirring shaft 3 are driven to rotate in the same direction and symmetrically. Furthermore, the first stirring shaft 21 and the second stirring shaft 31 are rotated around their own axes, and the first stirring shaft 2 and the second stirring shaft 3 are rotated symmetrically and in the same direction. The first stirring rod 21 stirs and mixes the ointment in the first stirring area and the vicinity, and the second stirring rod 31 stirs and mixes the ointment in the second stirring area and the vicinity. The first driving device 5 drives the rotation of the turntable 4 through the first propeller shaft 41, rotates the first stirring shaft 2 and the second stirring shaft 3, and further makes the first stirring area and the second stirring area make a circular motion along the inner peripheral edge of the container, so that the first stirring area and the second stirring area pass through all areas of the inner peripheral edge of the container.

[0024] Alternatively, only the first stirring rod 21 and the second stirring rod 31 are made to perform circular motion along the inner periphery of the container. While rotating the first stirring rod 21 and the second stirring rod 31 about their own axes, considering any vertical area within their respective stirring areas, the ointment on the inner periphery of the container 10 is scraped, and stirring and mixing of all the ointment within the container 10 are realized. When the first stirring rod 21 and the second stirring rod 31 perform circular motion along the inner periphery of the container 10, there is also a pulling action on the ointment, making the mixing of the ointment faster and more uniform. The first stirring rod 21 and the second stirring rod 31, which are substantially S-shaped or arc-hook-shaped, rotate about their own axes, and when performing circular motion along the inner periphery of the container, a substantially spiral conveying force is generated, forcing the ointment to exhaust air and reducing the pores within the ointment. Therefore, this stirring device is suitable not only for stirring ointments with good fluidity but also for stirring ointments with poor fluidity and high viscosity.

[0025] This embodiment is an explanation of the idea and implementation of the present invention and does not limit it. Technical means that are not substantially transformed under the idea of the present invention are still within the scope of protection.

Claims

1. A double - shaft ointment stirring device, comprising a base, wherein a rotatable first stirring shaft and a rotatable second stirring shaft are provided on the base, a first stirring rod is provided on the first stirring shaft, a second stirring rod is provided on the second stirring shaft, both the first stirring shaft and the second stirring shaft are eccentrically provided on a turntable, the turntable is rotationally connected to a first driving device, the first driving device is for driving the rotation of the turntable, and the outer edges of the first stirring rod and the second stirring rod fit with the inner edge of a container for containing ointment.

2. The double - shaft ointment stirring device according to claim 1, wherein the outer edges of the first stirring rod and the second stirring rod are substantially in contact with the inner edge of a container for containing ointment, the first stirring shaft and the second stirring shaft are axially symmetrically arranged, and both the first stirring rod and the second stirring rod are basically in an S - shape or an arc - hook shape.

3. The double - shaft ointment stirring device according to claim 1 or claim 2, wherein both the first stirring rod and the second stirring rod are rotationally connected to a second driving device.

4. The double - shaft ointment stirring device according to claim 3, wherein the first stirring shaft is rotationally connected to a first driving gear, the second stirring shaft is rotationally connected to a second driving gear, both the first driving gear and the second driving gear are rotationally connected to a second propeller shaft, the second propeller shaft is rotationally connected to a second driving device, and the second driving device drives the rotation of the second propeller shaft, thereby driving the rotation of the first driving gear and the second driving gear, further driving the rotation of the first stirring shaft and the second stirring shaft, and further realizing the rotation of the first stirring rod and the second stirring rod.

5. The double - shaft ointment stirring device according to claim 4, wherein the turntable is rotationally connected to a first propeller shaft having a hollow structure, the first propeller shaft is rotationally connected to a first driving device, the first driving device drives the rotation of the first propeller shaft, thereby driving the rotation of the turntable, and further causing the first stirring rod and the second stirring rod on the turntable to perform a rotational motion around the axis, and the second propeller shaft is arranged on the first propeller shaft and is provided coaxially with the first propeller shaft.

6. The first drive gear and the second drive gear are both meshed with a common gear, and the common gear is provided on a second propeller shaft. The double-shaft ointment stirring device according to claim 5, characterized in that.

7. Both the first stirring rod and the second stirring rod are provided with cutting edges extending along the extending direction of the first stirring rod and the second stirring rod. The double-shaft ointment stirring device according to claim 1 or claim 2, characterized in that.

8. The base is further provided with a lifting worktable, and the worktable is provided below the first stirring rod and the second stirring rod. The double-shaft ointment stirring device according to claim 1 or claim 2, characterized in that.

9. The first stirring shaft and the second stirring shaft are fixed to a turntable via a first bearing, a second bearing is arranged on the second propeller shaft, an outer ring of the second bearing is fixed to the first propeller shaft, and the second propeller shaft and the first propeller shaft realize relative rotation via the second bearing. The double-shaft ointment stirring device according to claim 5, characterized in that.

10. The first propeller shaft is connected to a first drive device via a transmission mechanism, the first drive device is a first drive motor, and the second drive device is a second drive motor. The double-shaft ointment stirring device according to claim 3, characterized in that.

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