Mixing device with locking mechanism
By introducing a locking mechanism and an adjustable stirring shaft position in the mixing device, the problem of the stirring shaft winding and the pipe is solved, and the mixing efficiency and equipment life are improved.
Patent Information
- Application Number
- CN202421414023.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-06-20
AI Technical Summary
In the existing mixing device in the field of biopharmaceuticals, the relative position between the agitating shaft and the mixing container cannot be adjusted, resulting in the mixing paddle being easily entangled with the pipes inside the mixing container, causing safety issues and affecting mixing efficiency.
A mixing device with a locking mechanism is designed, through the second rotating fixing device, the agitating shaft can move in the axial direction, and the rotatable relative position of the agitating shaft relative to the container wall is defined by the locking mechanism, so as to prevent the agitating paddle from wrapping with the foaming device.
It effectively reduces the probability of the stirring shaft and the foaming device wrapping, improves the mixing and stirring efficiency, and extends the service life of each component.
Smart Images
Figure CN222829546U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of biopharmaceuticals, in particular to a mixing device with a locking mechanism. Background Art
[0002] Mixing devices used in the biopharmaceutical field usually utilize a stirring paddle for mixing; in the prior art, the stirring paddle is arranged on a stirring shaft, and the stirring shaft is fixed to a mixing container by a fixing device, but the relative position between the end of the stirring shaft and the mixing container cannot be adjusted, that is, the relative position between the stirring paddle and the mixing container cannot be adjusted. At the same time, in order to stir the liquid more evenly, at least one stirring paddle is located at the lower part of the mixing container, that is, the stirring paddle is close to the end of the stirring shaft close to the bottom of the container. Under this structure, it is very easy for the stirring paddle to be entangled with the pipe inside the mixing container, which will not only cause safety problems, but also seriously affect the life of the pipe and the mixing efficiency. Utility Model Content
[0003] In order to solve the problems existing in the prior art, the utility model discloses a mixing device with a locking mechanism.
[0004] The utility model discloses a mixing device with a locking mechanism, comprising a container and a stirring shaft with a stirring paddle, and a foaming device for inputting gas into the container, one end of the stirring shaft is connected to a driving device through a first rotating fixing device, the other end of the stirring shaft is connected to a container wall of the container through a second rotating fixing device, and the stirring shaft can at least move along the axial direction of the second rotating fixing device;
[0005] The invention also comprises a locking mechanism for limiting the rotatable relative position of the stirring shaft relative to the container wall.
[0006] Specifically, usually, the foaming device in the mixing device is arranged at the bottom of the container, and in order to better stir and mix the liquid in the container, the stirring paddle on the stirring shaft will be arranged near the bottom of the container (if there are multiple stirring paddles on the stirring shaft, at least one stirring paddle is arranged near the bottom of the container), which results in that when the stirring shaft rotates, the stirring paddle will have a greater possibility of interfering with the foaming device (which can be a foaming disk and several pipes, or only composed of several ventilation pipes, as long as it can provide gas to the container), thereby causing the foaming device and the stirring paddle to be entangled, which will make the entire device unusable; therefore, it is necessary to limit the relative positions of the stirring shaft that can rotate, that is, when the distance between the end of the stirring shaft connected to the second rotating fixing device and the container wall is too close, the stirring shaft is locked by the locking mechanism and cannot rotate, and the locking mechanism can be released by increasing the distance between the end of the stirring shaft connected to the second rotating fixing device and the container wall by a certain amount.
[0007] Preferably, the second rotating fixing device comprises a second bearing connected to the end of the stirring shaft, and a bearing support member fixed to the container wall, the bearing support member comprises a first groove sleeved with the second bearing, and the relative position between the second bearing and the first groove is adjustable;
[0008] The locking mechanism includes a protrusion arranged on the inner wall of the first groove and a second groove arranged on the outer wall of the stirring shaft, and the second groove is arranged at the edge of the outer wall near the end of the stirring shaft connected to the second bearing, and the protrusion is adapted to the second groove.
[0009] Specifically, when the protrusion is located in the second groove, the stirring shaft is locked by the locking mechanism and cannot rotate. The stirring shaft can rotate only when the protrusion is not in the second groove. Since the second groove is arranged at the edge of the outer wall near the end where the stirring shaft is connected to the second bearing, the protrusion can be disengaged from the second groove only when the end of the stirring shaft connected to the second bearing is away from the bearing support. When the end of the stirring shaft connected to the second bearing is away from the bearing support, the distance between the stirring paddle and the foaming device will become larger, thereby effectively reducing the probability of entanglement failure.
[0010] Preferably, an adjusting device is sleeved in the first groove, and the adjusting device is fixed to the second bearing. A limiting protrusion is provided on the outer wall of the adjusting device, and a limiting convex ring adapted to the limiting protrusion is provided on the inner wall of the first groove. The limiting protrusion and the limiting convex ring cooperate to prevent the adjusting device and the first groove from being separated from each other.
[0011] Specifically, in order to enable the stirring shaft to rotate, it is necessary to increase the distance between the end of the stirring shaft connected to the second bearing and the bearing support, but the second bearing cannot be separated from the bearing support. Therefore, an adjustment device is required to cooperate with a limiting cam ring to prevent the second bearing from separating from the bearing support.
[0012] Preferably, the bearing support comprises a support connection seat fixed to the container wall and a bearing sleeve fixed to the support connection seat and sleeved with the second bearing, and the first groove is provided on the bearing sleeve. Preferably, a drainage hole is provided on the support connection seat.
[0013] Specifically, usually, the position of the support connection seat is the lowest point of the entire container wall. Setting the drainage hole here can discharge the liquid in the container to the maximum extent; in addition, when there is no need to discharge the liquid, the drainage hole does not connect the inside and outside of the container.
[0014] Preferably, the foaming device comprises a foaming disk, and the foaming disk is fixed on the bearing support.
[0015] Preferably, the container wall is a flexible wall.
[0016] Preferably, the axial dimension of the stirring shaft is variable.
[0017] Specifically, the stirring shaft with variable axial dimensions can not only be suitable for containers of more sizes, but also make the stirring shaft easier to transport, that is, the stirring shaft is in a state with the smallest axial dimension during transportation.
[0018] Preferably, the stirring shaft comprises a first part and a second part, and the first part and the second part are movably connected.
[0019] Specifically, the sleeve-connected structure of the first part and the second part is very convenient for adjusting the axial dimension of the stirring shaft.
[0020] Preferably, the second part is a hollow cylindrical structure, and the first part is sleeved inside the second part;
[0021] The stirring shaft is also provided with a sliding locking mechanism, which includes a slide groove provided on the side wall of the first part, a convex block protruding from the inner wall of the second part and adapted to the slide groove, and the convex block is provided with at least one;
[0022] The sliding groove comprises a sliding groove extending axially along the first part and a locking groove extending circumferentially along the first part, the sliding groove is communicated with the locking groove, and the size of the locking groove is adapted to the protrusion.
[0023] Specifically, the convex block slides along the sliding groove to adjust the axial dimension of the stirring shaft. At the same time, since the driving mechanism can only be connected to the first part or the second part, the convex block also has the function of transmitting power.
[0024] After the size of the stirring shaft is adjusted to an approximately suitable position, the first part and the second part are rotated relative to each other so that the protrusion is locked in the locking groove;
[0025] In order to better transmit power, a plurality of protrusions are provided. Usually, the number of locking grooves is equal to the number of protrusions, and the distance between adjacent protrusions is equal to the distance between adjacent locking grooves. However, more locking grooves can be provided as required.
[0026] In addition, during the specific installation, one end of the stirring shaft is first connected to the second rotating fixing mechanism. At this time, the distance between the end of the stirring shaft connected to the second rotating fixing device and the support connecting seat is the smallest. At this time, the protrusion is located in the second groove, and the stirring shaft cannot rotate. A pulling force is applied to the first part / second part to make the protrusion slide along the sliding groove. After sliding to the specified position, the first part / second part is rotated, and the protrusion is stuck in the locking groove. The size of the stirring shaft is then determined. Finally, a pulling force is applied to the entire stirring shaft to make the protrusion slide out of the second groove and the other end of the stirring shaft is connected to the first rotating fixing device to complete the installation of the stirring shaft.
[0027] Compared with the prior art, the utility model is beneficial in that:
[0028] 1. The locking mechanism is used to limit the rotatable relative position of the stirring shaft relative to the container wall, which greatly reduces the probability of the stirring shaft and the foaming device being entangled, making the mixing and stirring efficiency of the mixing device higher and the service life of each component longer.
[0029] 2. The sliding locking device of the stirring shaft realizes that the axial dimension of the stirring shaft is adjustable, making the stirring shaft easier to transport. At the same time, the position of the locking groove can be reasonably selected according to actual use needs, so that the stirring shaft has multiple working dimensions (i.e., the dimensions that match the container in a specific container), and can also effectively prevent the axial dimension of the stirring shaft from rapidly decreasing due to slipping during installation.
[0030] 3. The structure in which the sliding locking device of the main shaft cooperates with the locking mechanism of the second rotating fixing device greatly reduces the risk of damage to the container wall (flexible wall) during installation. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] Figure 1 It is a schematic diagram of a mixing device with a locking mechanism disclosed in the utility model;
[0032] Figure 2 It is a full cross-sectional schematic diagram of a mixing device with a locking mechanism disclosed in the utility model (excluding a foaming device);
[0033] Figure 3 for Figure 2 Enlarged view of point C in the middle;
[0034] Figure 4 for Figure 2 The enlarged view of point A in the middle;
[0035] Figure 5 for Figure 4 Enlarged view of point B in the middle. DETAILED DESCRIPTION
[0036] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.
[0037] like Figure 1-5 As shown, a mixing device with a locking mechanism comprises a container and a stirring shaft 20 with a stirring paddle 21, and a foaming device for inputting gas into the container, one end of the stirring shaft 20 is connected to the driving device through a first rotating fixing device 90, and the other end of the stirring shaft 20 is connected to the container wall 10 of the container through a second rotating fixing device, and the stirring shaft 20 can at least move along the axial direction of the second rotating fixing device;
[0038] The container further comprises a locking mechanism 30 for limiting the rotatable relative position of the stirring shaft 20 relative to the container wall 10 .
[0039] Normally, the foaming device in the mixing device is arranged at the bottom of the container, and in order to better stir and mix the liquid in the container, the stirring paddle 21 on the stirring shaft 20 is arranged at a position close to the bottom of the container (if there are multiple stirring paddles 21 on the stirring shaft 20, at least one stirring paddle 21 is arranged at a position close to the bottom of the container). This results in that when the stirring shaft 20 rotates, the stirring paddle 21 is more likely to interfere with the foaming device (which can be a foaming disk 61 and a plurality of pipes, or can be composed of only a plurality of ventilation pipes, as long as it can provide gas to the container), and then cause the foaming device and the stirring paddle 21 to be entangled, which will make the entire device unusable; therefore, it is necessary to limit the relative position of the stirring shaft 20 that can rotate, that is, when the distance between the end of the stirring shaft 20 connected to the second rotating fixing device and the container wall 10 is too close, the stirring shaft 20 is locked by the locking mechanism 30 and cannot rotate, so that the distance between the end of the stirring shaft 20 connected to the second rotating fixing device and the container wall 10 is increased by a certain distance to release the locking mechanism 30 from the stirring shaft 20.
[0040] The second rotating fixing device includes a second bearing 41 connected to the end of the stirring shaft 20, and a bearing support 50 fixed to the container wall 10, the bearing support 50 includes a first groove 42 sleeved with the second bearing 41, and the relative position between the second bearing 41 and the first groove 42 is adjustable;
[0041] The locking mechanism 30 includes a protrusion 31 provided on the inner wall of the first groove 42 and a second groove 32 provided on the outer wall of the stirring shaft 20, and the second groove 32 is provided at the edge of the outer wall near the end where the stirring shaft 20 is connected to the second bearing 41, and the protrusion 31 is adapted to the second groove 32.
[0042] When the protrusion 31 is located in the second groove 32, the stirring shaft 20 is locked by the locking mechanism 30 and cannot rotate. The stirring shaft 20 can rotate only when the protrusion 31 is not in the second groove 32. Since the second groove 32 is arranged at the edge of the outer wall near the end of the stirring shaft 20 connected to the second bearing 41, the protrusion 31 can be disengaged from the second groove 32 only when the end of the stirring shaft 20 connected to the second bearing 41 is away from the bearing support 50. When the end of the stirring shaft 20 connected to the second bearing 41 is away from the bearing support 50, the distance between the stirring paddle 21 and the foaming device will become larger, thereby effectively reducing the probability of entanglement failure.
[0043] An adjusting device 45 is sleeved in the first groove 42 and fixed to the second bearing 41. A limiting protrusion 43 is provided on the outer wall of the adjusting device 45, and a limiting convex ring 44 adapted to the limiting protrusion 43 is provided on the inner wall of the first groove 42. The limiting protrusion 43 cooperates with the limiting convex ring 44 to prevent the adjusting device 45 and the first groove 42 from separating from each other.
[0044] In order to enable the stirring shaft 20 to rotate, it is necessary to increase the distance between the end of the stirring shaft 20 connected to the second bearing 41 and the bearing support 50, but the second bearing 41 cannot be separated from the bearing support 50. Therefore, it is necessary to set an adjustment device 45 to cooperate with the limiting convex ring 44 to prevent the second bearing 41 from being separated from the bearing support 50.
[0045] The bearing support 50 includes a support connection seat 51 fixed to the container wall 10 and a bearing sleeve 52 fixed to the support connection seat 51 and sleeved with the second bearing 41 . The first groove 42 is provided on the bearing sleeve 52 .
[0046] The supporting connection seat 51 is provided with a drainage hole.
[0047] Typically, the support connection seat 51 is located at the lowest point of the entire container wall 10. Setting the drain hole here can drain the liquid in the container to the maximum extent. In addition, when there is no need to drain the liquid, the drain hole does not connect the inside and outside of the container.
[0048] The foaming device comprises a foaming disc 61 , which is fixed on the bearing support 50 .
[0049] The container wall 10 is a flexible wall.
[0050] The axial dimension of the stirring shaft 20 is variable.
[0051] The stirring shaft 20 with variable axial dimensions can not only be suitable for containers of more sizes, but also make the stirring shaft 20 easier to transport, that is, the stirring shaft 20 is in a state of minimum axial dimension during transportation.
[0052] The stirring shaft 20 includes a first portion 22 and a second portion 23 , and the first portion 22 and the second portion 23 are movably connected.
[0053] The sleeve-connected structure of the first portion 22 and the second portion 23 is very convenient for adjusting the axial dimension of the stirring shaft 20 .
[0054] The second part 23 is a hollow cylindrical structure, and the first part 22 is sleeved inside the second part 23;
[0055] The stirring shaft 20 is also provided with a sliding locking mechanism, which includes a slide groove 70 provided on the side wall of the first part 22, a protrusion 80 protruding from the inner wall of the second part 23 and adapted to the slide groove 70, and the protrusion 80 is provided with at least one;
[0056] The slide groove 70 includes a slide groove 71 extending axially along the first portion 22 and a locking groove 72 extending circumferentially along the first portion 22 . The slide groove 71 is communicated with the locking groove 72 , and the size protrusion 80 of the locking groove 72 is adapted.
[0057] The convex block 80 can adjust the axial dimension of the stirring shaft 20 by sliding along the sliding groove 71. At the same time, since the driving mechanism can only be connected to the first part 22 or the second part 23, the convex block 80 also has the function of transmitting power.
[0058] After the size of the stirring shaft 20 is adjusted to an approximately suitable position, the first portion 22 and the second portion 23 are rotated relative to each other so that the protrusion 80 is inserted into the locking groove 72;
[0059] In order to better transmit power, multiple protrusions 80 can be provided. Usually, the number of locking grooves 72 is equal to the number of protrusions 80, and the distance between adjacent protrusions 80 is equal to the distance between adjacent locking grooves 72. However, more locking grooves 72 can be provided as needed.
[0060] In addition, during the specific installation, one end of the stirring shaft 20 is first connected to the second rotating fixing mechanism. At this time, the distance between the end of the stirring shaft 20 connected to the second rotating fixing device and the support connecting seat 51 is the smallest. At this time, the protrusion 31 is located in the second groove 32, and the stirring shaft 20 cannot rotate. A pulling force is applied to the first part 22 / the second part 23 so that the protrusion 80 slides along the sliding groove 71. After sliding to the specified position, the first part 22 / the second part 23 is rotated, and the protrusion 80 is stuck in the locking groove 72. The size of the stirring shaft 20 is then determined. Finally, a pulling force is applied to the entire stirring shaft 20 to make the protrusion 31 slide out of the second groove 32, and the other end of the stirring shaft 20 is connected to the first rotating fixing device 90 to complete the installation of the stirring shaft 20.
Claims
1. A mixing device with a locking mechanism, comprising a container and a stirring shaft with a stirring paddle, and a foaming device for inputting gas into the container, characterized in that: One end of the stirring shaft is connected to the driving device through a first rotating fixing device, and the other end of the stirring shaft is connected to the container wall of the container through a second rotating fixing device, and the stirring shaft can at least move along the axial direction of the second rotating fixing device; The invention also comprises a locking mechanism for limiting the rotatable relative position of the stirring shaft relative to the container wall.
2. The mixing device with a locking mechanism according to claim 1, characterized in that: The second rotating fixing device comprises a second bearing connected to the end of the stirring shaft, and a bearing support member fixed to the container wall, the bearing support member comprises a first groove sleeved with the second bearing, and the relative position between the second bearing and the first groove is adjustable; The locking mechanism includes a protrusion arranged on the inner wall of the first groove and a second groove arranged on the outer wall of the stirring shaft, and the second groove is arranged at the edge of the outer wall near the end of the stirring shaft connected to the second bearing, and the protrusion is adapted to the second groove.
3. The mixing device with a locking mechanism according to claim 2, characterized in that: An adjusting device is sleeved in the first groove and fixed to the second bearing. A limiting protrusion is provided on the outer wall of the adjusting device, and a limiting convex ring adapted to the limiting protrusion is provided on the inner wall of the first groove. The limiting protrusion and the limiting convex ring cooperate to prevent the adjusting device and the first groove from separating from each other.
4. The mixing device with a locking mechanism according to claim 2, characterized in that: The bearing support member includes a support connection seat fixed to the container wall and a bearing sleeve fixed to the support connection seat and sleeved with the second bearing, and the first groove is arranged on the bearing sleeve.
5. The mixing device with a locking mechanism according to claim 4, characterized in that: The support connection seat is provided with a drainage hole.
6. The mixing device with a locking mechanism according to claim 2, characterized in that: The foaming device comprises a foaming disc, and the foaming disc is fixed on a bearing support.
7. The mixing device with a locking mechanism according to claim 1, characterized in that: The container wall is a flexible wall.
8. The mixing device with a locking mechanism according to claim 1, characterized in that: The axial dimension of the stirring shaft is variable.
9. The mixing device with a locking mechanism according to claim 8, characterized in that: The stirring shaft comprises a first part and a second part, and the first part is movably connected with the second part.
10. The mixing device with a locking mechanism according to claim 9, characterized in that: The second part is a hollow cylindrical structure, and the first part is sleeved inside the second part; The stirring shaft is also provided with a sliding locking mechanism, which includes a slide groove provided on the side wall of the first part, a convex block protruding from the inner wall of the second part and adapted to the slide groove, and the convex block is provided with at least one; The sliding groove comprises a sliding groove extending axially along the first part and a locking groove extending circumferentially along the first part, the sliding groove is communicated with the locking groove, and the size of the locking groove is adapted to the protrusion.