A detachable stirring blade connecting structure
The design of the clamp, groove, and limiting components solves the problem of unstable connection between the agitator and the drive shaft, achieving a stable connection and simplified operation, preventing the agitator from falling off, and improving safety and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI AOPUMAI BIOENGINEERING CO LTD
- Filing Date
- 2025-07-24
- Publication Date
- 2026-07-14
AI Technical Summary
The existing connection between the agitator and the drive shaft is unstable, which makes operation cumbersome and prone to detachment, damaging the preparation bag and causing loss and waste of culture medium.
The design incorporates a clip, a slot, and a limiting component. The clip inserts into the slot and is secured by the limiting component, ensuring a stable connection and simplifying the assembly and disassembly process.
This design achieves a secure connection between the agitator and the drive shaft, simplifies the operation process, prevents the agitator from accidentally falling off, and improves safety and efficiency.
Smart Images
Figure CN224485594U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stirring technology, and in particular to a stirring paddle connection structure that is easy to disassemble. Background Technology
[0002] In existing technologies, laboratories frequently require stirring culture media using a stirrer. The media is stored in a dispensing bag, which is placed in a dispensing container. The stirrer consists of a shaft and blades mounted on the shaft. Both the shaft and the drive shaft are smooth shafts, and both are vertically arranged during use, making it impossible to connect the shaft and drive shaft using traditional couplings. Therefore, a clamp-like structure is used to fix the shaft and drive shaft together, effectively clamping both the shaft and drive shaft simultaneously through friction. Disassembling the shaft and drive shaft requires tightening multiple bolts on the clamp, which is not only cumbersome but also makes it difficult to determine if the shaft and drive shaft are effectively clamped. This often results in the stirrer accidentally detaching during use, damaging the dispensing bag and causing loss and waste of the culture media. Summary of the Invention
[0003] In view of the problem that the connection between the impeller and the drive shaft is not stable enough in the prior art, the purpose of this utility model is to provide an impeller connection structure that is easy to disassemble, so as to at least partially solve the above-mentioned problem.
[0004] To achieve the above objectives, the technical solution of this utility model is as follows:
[0005] A disassembly-friendly impeller connection structure, the impeller comprising an impeller rod and impeller blades disposed on the impeller rod, the impeller connection structure being used to connect a drive shaft and the impeller rod, the impeller connection structure comprising:
[0006] A clamping head is disposed on the outer wall of the top end of the propeller shaft;
[0007] A slot is provided in the bottom connecting hole of the drive shaft, and the connecting hole is adapted to the paddle rod;
[0008] A limiting member is provided, which is arranged between the drive shaft and the propeller rod, and is used to prevent the locking head from disengaging from the locking slot.
[0009] In some preferred embodiments, the slot includes a slot opening section, a slot bottom section, and a connecting section connecting the slot opening section and the slot bottom section. The slot opening section and the slot bottom section are both axially formed on the inner wall of the connecting hole, and the connecting section is circumferentially formed on the inner wall of the connecting hole. The slot opening section forms a slot at the bottom end of the connecting hole for the insertion and exit of the card head.
[0010] In some preferred embodiments, the limiting member includes a pin, and the drive shaft has a socket adapted to the pin. The socket is connected to the bottom section of the groove. When the locking head is located in the bottom section of the groove, the pin inserted on the drive shaft can prevent the locking head from disengaging from the bottom section of the groove.
[0011] In some preferred embodiments, the pin is threaded onto the drive shaft, and the tip of the pin extends into the bottom section of the groove to prevent the catch from disengaging.
[0012] In some preferred embodiments, the limiting member is a spring arranged in the connecting hole, the spring being used to provide elastic force to engage the clip head in the bottom section of the groove.
[0013] In some preferred embodiments, the groove opening section and the connecting section, as well as the groove bottom section and the connecting section, have an arc-shaped transition.
[0014] In some preferred embodiments, there are two or more clamps evenly distributed circumferentially on the propeller shaft, and the same number of clamp slots are evenly distributed circumferentially on the drive shaft.
[0015] The beneficial effects of this utility model by adopting the above technical solution are as follows: By setting the clamp, the groove and the limiting component, this utility model not only makes the connection operation between the stirring paddle and the drive shaft simpler and easier to disassemble and assemble, but also makes the connection more stable and can effectively prevent the stirring paddle from accidentally falling off. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model.
[0017] Figure 2 This is a cross-sectional view of the transmission shaft in this utility model.
[0018] Figure 3 This is another sectional view of the drive shaft in this utility model.
[0019] Figure 4 This is a usage diagram of Embodiment 2 of this utility model.
[0020] In the diagram: 1-propeller rod, 2-drive shaft, 21-connecting hole, 3-clamp, 4-slot, 41-slot opening section, 42-slot bottom section, 43-connecting section, 5-limiting component, 51-pin, 52-insertion hole. Detailed Implementation
[0021] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0022] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the description of the structure of this utility model shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0023] The terms "first" and "second" in this technical solution are merely designations for corresponding structures that are identical or similar, or that perform similar functions. They do not represent an arrangement of the importance of these structures, nor do they imply any ranking, comparison of size, or other meaning.
[0024] Furthermore, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two structures. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the overall concept and the specific context of the solution.
[0025] Example 1
[0026] A disassembly-friendly stirring paddle connection structure is provided, wherein the stirring paddle includes a paddle rod 1 and paddle blades disposed on the paddle rod 1, and the stirring paddle connection structure is used to connect a drive shaft 2 and a paddle rod 1.
[0027] In this embodiment, the stirring paddle connection structure includes a clamp head 3, a groove 4, and a limiting member 5.
[0028] The propeller 1 has a rod-shaped structure, and the clamp 3 is located on the outer wall of the propeller 1 near the top. The clamp 3 is roughly cylindrical and its axis is perpendicular to the axis of the propeller 1.
[0029] The bottom end of the drive shaft 2 is provided with a connecting hole 21. The diameter of the connecting hole 21 is slightly larger than the diameter of the propeller 1, so that the top end of the propeller 1 can be freely inserted into the connecting hole 21.
[0030] The slot 4 is formed on the side wall of the connecting hole 21. In this embodiment, the slot 4 includes a slot opening section 41, a slot bottom section 42, and a connecting section 43. The slot opening section 41 is formed axially on the inner wall of the connecting hole 21, and the lower end of the slot opening section 41 forms a slot for the insertion and exit of the locking head 3 at the bottom edge of the connecting hole 21. The slot bottom section 42 is also formed axially on the inner wall of the connecting hole 21, and the connecting section 43 is formed circumferentially on the inner wall of the connecting hole 21, with its two ends connecting to the upper end of the slot opening section 41 and the upper end of the slot bottom section 42, respectively. The size of the slot bottom section 42 is smaller than that of the slot opening section 41. Thus, when the upper ends of the slot opening section 41 and the slot bottom section 42 are flush, the lower end of the slot bottom section 42 is closed, specifically meaning that the slot bottom section 42 does not communicate with the bottom edge of the connecting hole 21, allowing the locking head 3 to be stably locked at the lower end of the slot bottom section 42.
[0031] In this embodiment, the connecting hole 21 has a certain depth (i.e., axial dimension), which allows the chuck 3 on the propeller rod 1 to smoothly enter the bottom section 42 of the groove.
[0032] The limiting member 5 is arranged between the drive shaft 2 and the propeller 1. The limiting member 5 is used to prevent the clamp head 3 from disengaging from the clamp groove 4 (specifically the bottom section 42 of the groove).
[0033] For example, the limiting member 5 includes a pin 51. Correspondingly, the side wall of the drive shaft 2 is provided with a hole 52 that is adapted to the pin 51. The hole 52 is arranged radially and communicates with the bottom section 42. When the clamping head 3 is located at the lower end of the bottom section 42, the pin 51 extends into the bottom section 42 and the tip of the pin is just above the clamping head 3, thereby preventing the clamping head 3 from disengaging from the bottom section 42 by the pin 51.
[0034] It is easy to understand that, in order to prevent the pin 51 from falling off, the pin 51 is connected to the insertion hole 52 on the drive shaft 2 by means of a thread. When in use, the pin 51 can be screwed into the bottom section 42 of the groove by twisting it, so as to prevent the chuck 3 from falling out of the bottom section 42.
[0035] In this embodiment, the groove section 41 and the connecting section 43, as well as the groove bottom section 42 and the connecting section 43, are arc-shaped transitions to facilitate the movement of the clamping head 3.
[0036] It is readily understood that in other preferred embodiments, there are two clamping heads 3 evenly distributed circumferentially on the propeller shaft 1, and correspondingly, there are two clamping slots 4 evenly distributed circumferentially on the connecting holes 21 of the drive shaft 2. At this time, there are two insertion holes on the side wall of the drive shaft 2, which are coaxial. In order to improve disassembly efficiency, a radial through hole can be opened on the propeller shaft 1 so that when the clamping head 3 is clamped in the bottom end 42 of the slot, the two insertion holes 52 on the drive shaft 2 can be connected through the radial through hole. In this way, only a long pin 51 is needed to simultaneously restrict the two clamping heads 3.
[0037] Alternatively, the slot opening section 41 and the slot bottom section 42 in the slot 4 can be arranged circumferentially at a 90° interval, and the connecting section 43 of the two slots 4 can be connected end to end. In this way, during assembly (i.e. when the chuck 3 slides into the slot opening section 41), there is no need to pay attention to the rotation direction of the propeller 1 relative to the drive shaft 2. After rotating 90°, it can be ensured that the chuck 3 is engaged in a slot bottom section 42, thereby improving assembly efficiency.
[0038] The easy-to-disassemble stirring paddle connection structure provided in this embodiment of the invention is used as follows:
[0039] During installation, the top end of the paddle rod 1 is inserted into the connecting hole 21 of the drive shaft 2. During insertion, ensure that the clamp 3 is aligned with the groove opening 41 of the groove 4. Then, rotate the paddle rod 1 to allow the clamp 3 to enter the bottom section 42 along the connecting section 43. Under gravity, the clamp 3 falls to the lower end of the bottom section 42. The clamp 3 is then secured by a pin to disengage from the bottom section 42, completing the installation of the agitator. For disassembly, first remove the pin, then move the clamp 3 in the reverse direction within the groove 4 to disengage it, thus disassembling the agitator. Compared to existing technologies, the agitator connection structure provided in this embodiment is easy to assemble and disassemble, and the connection is stable.
[0040] Example 2
[0041] In this embodiment, the limiting member 5 is a spring, which is arranged in the connecting hole 21. For example, the upper end of the spring is welded and fixed to the top wall of the connecting hole 21. When the paddle rod 1 is installed, the paddle rod 1 overcomes the elastic force of the spring so that the clamp 3 can be inserted into the bottom section 42 of the groove 4. During the use of the stirring paddle, the paddle rod 1 is always subjected to the elastic force given by the spring, so that the clamp 3 is always inserted into the lower end of the bottom section 42.
[0042] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.
Claims
1. A disassembly-friendly stirring paddle connection structure, the stirring paddle comprising a paddle rod and paddle blades disposed on the paddle rod, the stirring paddle connection structure being used to connect a drive shaft and the paddle rod, characterized in that, The stirring paddle connection structure includes: A clamping head is disposed on the outer wall of the top end of the propeller shaft; A slot is provided in the bottom connecting hole of the drive shaft, and the connecting hole is adapted to the paddle rod; A limiting member is provided, which is arranged between the drive shaft and the propeller rod, and is used to prevent the locking head from disengaging from the locking slot.
2. The easily detachable stirring paddle connection structure according to claim 1, characterized in that: The slot includes a slot opening section, a slot bottom section, and a connecting section connecting the slot opening section and the slot bottom section. The slot opening section and the slot bottom section are both axially formed on the inner wall of the connecting hole. The connecting section is circumferentially formed on the inner wall of the connecting hole. The slot opening section forms a slot at the bottom of the connecting hole for the insertion and exit of the card head.
3. The easily detachable stirring paddle connection structure according to claim 2, characterized in that: The limiting component includes a pin, and the drive shaft has a hole adapted to the pin. The hole is connected to the bottom section of the groove. When the locking head is located in the bottom section of the groove, the pin inserted in the drive shaft can prevent the locking head from disengaging from the bottom section of the groove.
4. The easily detachable stirring paddle connection structure according to claim 3, characterized in that: The pin is threaded onto the drive shaft, and the tip of the pin extends into the bottom section of the groove to prevent the locking head from disengaging.
5. The easily detachable stirring paddle connection structure according to claim 2, characterized in that: The limiting member is a spring arranged in the connecting hole, and the spring is used to provide elastic force to lock the clip head into the bottom section of the groove.
6. The easily detachable stirring paddle connection structure according to claim 2, characterized in that: The groove opening section and the connecting section, as well as the groove bottom section and the connecting section, all have an arc-shaped transition.
7. The easily detachable stirring paddle connection structure according to claim 1, characterized in that: The clamps are two or more and are evenly distributed circumferentially on the propeller shaft, and the clamp slots are of the same number and are evenly distributed circumferentially on the drive shaft.