Circulating lifting device for multi-specification flasks for experiment

Abstract

The utility model relates to a cyclic lifting device for multi-specification flasks for experiments, which comprises a base, two supporting columns are symmetrically arranged on the base, and the base and the supporting columns jointly form a main frame; chain wheels are symmetrically arranged on the tops and the lower portions of the two supporting columns correspondingly, the two chain wheels located on the upper portion are flush with each other, the two chain wheels located on the lower portion are flush with each other, a chain is connected between the two chain wheels on the same side, and the two chains are symmetrical; a transmission shaft assembly is connected between the two chain wheels located on the lower portion, the transmission shaft assembly is in transmission connection with a driving assembly, and the driving assembly is in communication connection with a control module. A plurality of sliding shaft assemblies are arranged between the two chains, and one or more hook assemblies are connected to the sliding shaft assemblies in a sliding mode.

Description

A circulating lifting device for multi-size experimental flasks Technical Field

[0001] This utility model relates to the field of experimental apparatus, and more specifically, to a circulating lifting device for multi-specification experimental flasks. Background Technology

[0002] Flasks, as commonly used reaction vessels in experiments, come in various sizes, including single-necked, two-necked, three-necked, and four-necked. In traditional laboratory environments, flasks often need to be suspended. However, current flask suspension methods are often rudimentary, mostly using fixed hooks or simple ropes, making it difficult to easily adjust the height. Especially when the experimental process requires changing the flask height, such as during heating, mixing, or adding reagents, researchers usually have to manually move the supports or re-tie the ropes. This operation is cumbersome, lacks precision, consumes a lot of time and energy, and is prone to causing the flask to shake, collide, or even break due to improper operation, endangering experimental safety and data accuracy. Although some simple adjustment devices exist, they are often not suitable for various flask sizes and lack stability and precision, failing to meet the requirements of modern experiments for precise operation and efficient processes.

[0003] There are currently no good solutions on the market to address the above problems. Summary of the Invention

[0004] In view of the above-mentioned technical problems in related technologies, this utility model proposes a circulating lifting device for multi-specification experimental flasks, which can overcome the above-mentioned shortcomings of the prior art.

[0005] To achieve the above-mentioned technical objectives, the technical solution of this utility model is as follows:

[0006] A circulating lifting device for experimental multi-size flasks includes a base, on which two support columns are symmetrically arranged, and the base and support columns together form the main frame.

[0007] The top and bottom of the two support columns are symmetrically provided with sprockets, which are flush with the two upper sprockets and the two lower sprockets. A chain is connected between the two sprockets on the same side, and the two chains are symmetrical.

[0008] A drive shaft assembly is connected between the two sprockets located below, and the drive shaft assembly is connected to a drive assembly, which is communicatively connected to the control module.

[0009] Several sliding shaft assemblies are provided between the two chains, and one or more hook assemblies are slidably connected to each sliding shaft assembly.

[0010] Preferably, a plurality of fixing plates for stabilizing purposes are provided between the two support columns;

[0011] The drive assembly includes a drive mounting bracket, which is detachably or fixedly connected to the adjacent fixing plate or support column.

[0012] The drive mounting bracket is equipped with a drive motor, and the output shaft of the drive motor is equipped with a power gear. The transmission shaft assembly is equipped with a transmission shaft gear that meshes with the power gear. When the drive motor is working, the power gear on its output shaft rotates, and the power gear drives the transmission shaft gear to rotate as well through meshing. The transmission shaft assembly is driven to rotate by the transmission shaft gear, which in turn drives the two sprockets below to rotate. Driven by the rotation of the sprockets on both sides, the chains on both sides reciprocate synchronously around the sprockets on the same side, driving the lifting and lowering of the sliding shaft assembly and the hook assembly, and ultimately realizing the lifting and lowering of the flask suspended on the hook assembly.

[0013] Preferably, the transmission shaft gear is located in the middle or at one end of the transmission shaft assembly, and the drive assembly is located directly above the transmission shaft gear.

[0014] Preferably, the drive motor is a high-precision servo stepper motor.

[0015] Preferably, the transmission shaft gear is located at one end of the transmission shaft assembly, the upper part of the drive mounting bracket is provided with a connecting piece one corresponding to the fixed plate, the side of the drive support bracket is provided with a connecting piece two corresponding to the support column, and the lower part of the drive support bracket is provided with a U-shaped piece supporting the drive motor, the U-shaped piece being provided with an opening for the drive motor drive shaft to pass downward.

[0016] The connecting piece one and the connecting piece two are respectively provided with threaded holes;

[0017] The connecting piece one and connecting piece two are respectively threadedly connected to the support column and the fixing plate through threaded holes, bolts or screws.

[0018] Preferably, the control module includes a PLC controller and a human-machine interface that cooperate with each other;

[0019] The PLC controller communicates with the drive motor via wires or wireless connection. A preset program can be set for the PLC controller through a human-machine interface. This preset program controls the operation of the drive components. During operation, the drive components rotate the transmission shaft assembly, which in turn drives the chains on both sides to rotate around the sprockets. The sliding shaft assembly rises and falls with the chain rotation, and the hook assembly rises and falls with the sliding shaft assembly. Wireless connection can be achieved via local area network, WiFi, Bluetooth, or other wireless methods.

[0020] Preferably, the position of the control module is determined according to actual needs, and it can be set on the base and located below the chain. The control module can further help improve the stability of the main frame by means of its weight.

[0021] Preferably, each of the two chains is provided with a chain fixing bracket corresponding to the sliding shaft assembly;

[0022] The two ends of the slide shaft assembly are connected to the chain fixing frame that is flush with both sides using precision bearings.

[0023] Preferably, the bottom of the sliding shaft assembly is provided with a linear slide rail, and the top of the hook assembly is provided with a hook slider that can be slidably connected to the linear slide rail. Through the cooperation of the hook slider and the linear slide rail, the position of the hook assembly can be adjusted horizontally along the linear slide rail, thereby achieving the adjustment of the flask position.

[0024] Preferably, the hook assembly includes single hook assemblies, left-side adjustable hooks, and right-side adjustable hooks. These types of hook assemblies can be implemented using existing technologies.

[0025] Preferably, the bottom of the hook assembly is provided with a double-jointed flexible silicone pad to prevent the flask from slipping.

[0026] Compared with existing technologies, this design has the following advantages: (A) Through the synergistic action of sprockets, chains, and sliding shaft assemblies, combined with the closed-loop control of the drive assembly, a height positioning accuracy of ±0.5mm can be achieved, solving the problem of insufficient accuracy in traditional manual adjustment. (B) The two ends of the sliding shaft assembly are connected to the chain fixing frame through precision bearings, realizing a mechanical coupling design. The hook assembly relies on the sliding connection between its top hook slider and the linear slide rail at the bottom of the sliding shaft assembly. When the flask is suspended on the hook assembly, the self-weight of the flask and the hook assembly is fully utilized to maintain the stability of the flask during cyclic movement, realizing the flask's self-weight adjustment mechanism---even if the flask always maintains a vertical state during lifting and lowering, with a tilt angle ≤1°, which can reduce the risk of shaking by more than 80% compared with existing devices. (C) The contact part between the hook assembly and the flask can be equipped with a double-combined flexible silicone pad, further enhancing the stable suspension of various types of flasks. (D) The hook assembly can adopt different specifications such as a single hook assembly 702, a left-side adjustable hook 703, and a right-side adjustable hook 704. The left-side and right-side adjustable hooks can be flexibly combined, or a single hook assembly can be flexibly combined with either the left-side or right-side adjustable hooks, thereby achieving greater freedom of adaptation to flask necks on both sides. It can adapt to flask necks with diameters of 30-80mm and maintain a slip-free state under a 10N axial tensile force, breaking through the size limitations of a single hook. (E) The control module can be programmed to control idle time via a PLC controller, supporting multiple height presets. The single height switching time is short, saving more than 90% of process interruption time compared to manual operation.

[0027] This product can be divided into a main frame module, a chain and sprocket drive module, a drive component module, a hook module, and a control module. The structure can be configured as follows:

[0028] Main frame module: including base, support column and fixing plate, which can be made of high-strength stainless steel. The bottom of the base can be equipped with anti-slip rubber pad to ensure stable placement on the laboratory table.

[0029] Chain and sprocket drive module: This module may include two sprockets on each side, with a chain connecting the two sprockets on the same side. Several horizontally extending sliding shaft assemblies are located between the chains on both sides. A drive shaft assembly is connected between the two lower sprockets to receive the driving force from the drive module. The sprockets may be fitted with low-friction ball bearings to enhance the smoothness and stability of sprocket rotation, preventing wobbling or deviation during lifting and lowering.

[0030] Drive component module: may include drive mounting bracket, drive motor, and power gear. The drive mounting bracket is responsible for connecting to the main frame module. The drive motor is responsible for receiving instructions from the control module and driving the power gear to rotate. The power gear can transmit torque power to the transmission shaft gear of the transmission shaft assembly through meshing.

[0031] Hook Module: Includes hook assembly. The bottom of the hook assembly is forked, which can improve the stability of the suspended flask through a flexible silicone pad. The hook assembly is slidably connected to the sliding shaft assembly. It can be made of stainless steel and bent into an arc structure to fit the neck of the flask. One end of the hook assembly is slidably connected to the linear guide rail at the bottom of the sliding shaft assembly through a hook slider. This allows the flask to adaptively adjust the angle when suspended on the hook assembly to maintain a vertical and stable state, and it can also slide horizontally to adjust the position. With the flexible multi-size hook design, it can be adjusted according to the neck of different flasks to meet the placement of diverse flasks.

[0032] Control Module: This can be implemented using existing automatic positioning control. A preset program can be set for the PLC controller via a human-machine interface. This preset program manipulates the drive components, using precise algorithms to control the forward and reverse rotation and speed of the drive motor, thereby accurately controlling the chain's operating speed and ultimately the overall lifting speed of the cyclic lifting device. The PLC controller can be implemented using a programmable logic controller (PLC). According to the experimental procedure, the required height parameters for different stages of the flask can be input on the human-machine interface. The PLC controller then controls the drive motor according to the preset program to achieve automatic cyclic lifting of the flask. Attached Figure Description

[0033] The present invention will now be described in further detail with reference to the accompanying drawings.

[0034] Figure 1 is a perspective view of the aforementioned circulating lifting device.

[0035] Figure 2 is an enlarged view of point A in Figure 1.

[0036] Figure 3 is a diagram showing the relationship between the drive assembly and the transmission shaft connection.

[0037] Figure 4 is a detailed view of the driving component in Figure 3.

[0038] Figure 5 shows a side view of the circulating lifting device – the control module is located on the base, below the chain.

[0039] Figure 6 is a schematic diagram of the control module.

[0040] Figure 7 is a schematic diagram of the sliding connection of the slide shaft assembly and the hook assembly.

[0041] Figure 8 is a schematic diagram of the single hook assembly suspending a single-necked flask.

[0042] Figure 9 is a schematic diagram of the single hook assembly described above, with the adjustable hook on the right side used to suspend the double-necked flask.

[0043] Figure 10 is a schematic diagram of the three-necked flask being suspended by the adjustable hooks on the left and right sides.

[0044] Figure 11 is a schematic diagram of the three-necked flask being suspended by the adjustable hooks on the left and right sides.

[0045] Figure 12 is a schematic diagram of the left adjustable hook and the right adjustable hook used to suspend the four-necked flask.

[0046] Figure 13 is a schematic diagram showing the position of the double-jointed flexible silicone pad at the bottom of the hook assembly. Detailed Implementation

[0047] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0048] As shown in Figures 1-13, in order to facilitate understanding of the above technical solution of this utility model, the above technical solution of this utility model will be described in detail below through specific usage methods.

[0049] A circulating lifting device for experimental multi-size flasks includes a base 1, on which two support columns 2 are symmetrically arranged, and the base 1 and the support columns 2 together form the main frame.

[0050] The top and bottom of the two support columns 2 are respectively symmetrically provided with sprockets 3, which are flush with the two sprockets 3 located above and the two sprockets 3 located below. A chain 8 is connected between the two sprockets 3 on the same side, and the two chains 8 are symmetrical.

[0051] A drive shaft assembly 4 is connected between the two sprockets 3 located below, and a drive assembly 5 is connected to the drive shaft assembly 4. The drive assembly 5 is communicatively connected to the control module 10.

[0052] A plurality of sliding shaft assemblies 6 are provided between the two chains 8, and one or more hook assemblies 7 are slidably connected to the sliding shaft assembly 6.

[0053] In one possible embodiment, a plurality of fixing plates 9 for stabilizing purposes are provided between the two support columns 2;

[0054] The drive assembly 5 includes a drive mounting bracket 501, which is detachably or fixedly connected to the adjacent fixing plate 9 or support column 2.

[0055] The drive mounting bracket 501 is equipped with a drive motor 502, and the output shaft of the drive motor 502 is equipped with a power gear 503;

[0056] The drive shaft assembly 4 is equipped with a drive shaft gear 401 that meshes with the power gear 503. When the drive motor 502 is working, the power gear 503 on its output shaft rotates. The power gear 503 drives the drive shaft gear 401 to rotate through meshing. The drive shaft assembly 4 is driven to rotate by the drive shaft gear 401, which in turn drives the two sprockets 3 below to rotate. Driven by the rotation of the sprockets 3 on both sides, the chains 8 on both sides reciprocate synchronously around the sprockets 3 on the same side, driving the sliding shaft assembly 6 and the hook assembly 7 to rise and fall, and ultimately realizing the raising and lowering of the flask suspended on the hook assembly 7.

[0057] In one possible embodiment, the drive shaft gear 401 is located in the middle or at one end of the drive shaft assembly 4, and the drive assembly 5 is located directly above the drive shaft gear 401.

[0058] In one possible embodiment, the drive motor 502 is preferably a high-precision servo stepper motor.

[0059] In one possible embodiment, the transmission shaft gear 401 is located at one end of the transmission shaft assembly 4, the upper part of the drive mounting bracket 501 is provided with a connecting piece 5011 corresponding to the fixed plate 9, the side of the drive mounting bracket 501 is provided with a connecting piece 5012 corresponding to the support column 2, and the lower part of the drive mounting bracket 501 is provided with a U-shaped member 5013 supporting the drive motor 502, the U-shaped member 5013 is provided with an opening for the drive motor 502 to drive downward;

[0060] The connecting piece 5011 and the connecting piece 5012 are respectively provided with threaded holes;

[0061] The connecting piece 5011 and the connecting piece 5012 are threadedly connected to the support column 2 and the fixing plate 9 through threaded holes, bolts or screws, respectively.

[0062] In one possible embodiment, the control module 10 includes a PLC controller 1001 and a human-machine interface 1002 that cooperate with each other.

[0063] The PLC controller 1001 is communicatively connected to the drive motor 502 via wires or wireless connection. A preset program can be set for the PLC controller 1001 through the human-machine interface 1002. This preset program controls the operation of the drive assembly 5. During operation, the drive assembly 5 drives the transmission shaft assembly 4 to rotate, which in turn drives the chains 8 on both sides to rotate around the sprocket 3. The sliding shaft assembly 6 rises and falls along with the rotation of the chains 8, and the hook assembly 7 rises and falls along with the sliding shaft assembly 6. The wireless connection can be via local area network, WiFi, Bluetooth, or other wireless methods.

[0064] In one possible embodiment, the control module 10 is positioned as needed and may be located on the base 1 and below the chain 8. The weight of the control module 10 can further contribute to improving the stability of the main frame.

[0065] In one possible embodiment, each of the two chains 8 is provided with a chain fixing bracket 801 corresponding to the sliding shaft assembly 6;

[0066] The two ends of the slide shaft assembly 6 are connected to the chain fixing frame 801 that is flush with both sides by precision bearings 601.

[0067] In one possible embodiment, the bottom of the sliding shaft assembly 6 is provided with a linear slide rail 602, and the top of the hook assembly 7 is provided with a hook slider 701 that can be slidably connected to the linear slide rail 602. Through the cooperation of the hook slider 701 and the linear slide rail 602, the position of the hook assembly 7 can be adjusted horizontally along the linear slide rail 602, thereby realizing the adjustment of the flask position.

[0068] In one possible embodiment, the hook assembly 7 may include a single hook assembly 702, a left-side adjustable hook 703, and a right-side adjustable hook 704. These types of hook assemblies can be implemented using existing technologies.

[0069] In one possible embodiment, the bottom of the hook assembly 7 is provided with a double-linked flexible silicone pad 705 to prevent the flask from slipping.

[0070] Working Principle: A preset program can be set via the human-machine interface 1002 using the PLC controller 1001. This preset program drives the drive component 5, which in turn drives the transmission shaft assembly 4 to rotate. The transmission shaft assembly 4, through two sprockets 3 below, drives the chains 8 on both sides to rotate synchronously around the sprockets 3, causing the hook component 7 to rise and fall along the sliding shaft assembly 6. The hook component 7 is slidably connected to the sliding shaft assembly 6, allowing adjustment of the position of the hook component 7 relative to the sliding shaft assembly 6. The flask is suspended at the bottom of the hook component 7, thus adjusting the flask's horizontal position. When the flask is suspended at the bottom of the hook component 7, the flask automatically maintains a vertical position due to its own weight, thus reducing the risk of swaying.

[0071] In summary, through the above unique technical solutions, this utility model achieves the following: (A) Through the synergistic action of sprockets, chains, and sliding shaft assemblies, combined with the closed-loop control of the drive assembly, a height positioning accuracy of ±0.5mm can be achieved, solving the problem of insufficient accuracy in traditional manual adjustment. (B) The two ends of the sliding shaft assembly are connected to the chain fixing frame through precision bearings, realizing a mechanical coupling design. The hook assembly relies on its top hook slider to slide with the linear slide rail at the bottom of the sliding shaft assembly. When the flask is suspended on the hook assembly, the self-weight of the flask and the hook assembly is fully utilized to maintain the stability of the flask during cyclic movement, realizing the flask's self-weight adjustment mechanism—even if the flask remains vertical during lifting and lowering, the tilt angle is ≤1°, which can reduce the risk of shaking by more than 80% compared to existing devices. (C) The contact part between the hook assembly and the flask can be equipped with a double-combined flexible silicone pad, further strengthening the stable suspension of various types of flasks. (D) The hook assembly can adopt different specifications such as a single hook assembly 702, a left-side adjustable hook 703, and a right-side adjustable hook 704. The left-side and right-side adjustable hooks can be flexibly combined, or a single hook assembly can be flexibly combined with either the left-side or right-side adjustable hooks. This allows for greater flexibility in adapting to flask necks on both sides, accommodating flask necks with diameters of 30-80mm. It maintains a slip-free state under a 10N axial tensile force, overcoming the size limitations of a single hook. (E) The control module can be programmed and controlled via a PLC controller, supporting multi-segment height presets. Single height switching time is short, saving over 90% of process interruption time compared to manual operation.

[0072] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0073] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A circulating lifting device for multi-specification experimental flasks, characterized in that, The system includes a base (1), on which two support columns (2) are symmetrically arranged. The base (1) and the support columns (2) together form the main frame. The top and bottom of the two support columns (2) are respectively symmetrically provided with sprockets (3), which are flush with the two upper sprockets (3) and the two lower sprockets (3). A chain (8) is connected between the two sprockets (3) on the same side, and the two chains (8) are symmetrical. A drive shaft assembly (4) is connected between the two lower sprockets (3), and the drive shaft assembly (4) is connected to a drive assembly (5). The drive assembly (5) is communicatively connected to the control module (10). Several sliding shaft assemblies (6) are provided between the two chains (8), and one or more hook assemblies (7) are slidably connected to the sliding shaft assembly (6).

2. The circulating lifting device as described in claim 1, characterized in that, A plurality of fixing plates (9) for stabilizing are provided between the two support columns (2); the drive assembly (5) includes a drive mounting frame (501), which is detachably or fixedly connected to the adjacent fixing plate (9) or support column (2); a drive motor (502) is provided on the drive mounting frame (501), and a power gear (503) is provided on the output shaft of the drive motor (502); a transmission shaft assembly (4) is provided with a transmission shaft gear (401) that meshes with the power gear (503).

3. The circulating lifting device as described in claim 2, characterized in that, The transmission shaft gear (401) is located in the middle or at one end of the transmission shaft assembly (4), and the drive assembly (5) is located directly above the transmission shaft gear (401).

4. The circulating lifting device as described in claim 2, characterized in that, The drive motor (502) is a high-precision servo stepper motor.

5. The circulating lifting device as described in claim 3, characterized in that, The transmission shaft gear (401) is located at one end of the transmission shaft assembly (4). The upper part of the drive mounting bracket (501) is provided with a connecting piece 1 (5011) corresponding to the fixed plate (9). The side of the drive mounting bracket (501) is provided with a connecting piece 2 (5012) corresponding to the support column (2). The lower part of the drive mounting bracket (501) is provided with a U-shaped piece (5013) supporting the drive motor (502). The U-shaped piece (5013) is provided with an opening for the drive motor (502) to pass downward. The connecting piece 1 (5011) and the connecting piece 2 (5012) are respectively provided with threaded holes. The connecting piece 1 (5011) and the connecting piece 2 (5012) are respectively threadedly connected to the support column (2) and the fixed plate (9) through threaded holes, bolts or screws.

6. The circulating lifting device as described in claim 2, characterized in that, The control module (10) includes a PLC controller (1001) and a human-machine interface (1002) that cooperate with each other; the PLC controller (1001) is connected to the drive motor (502) via wire connection or wireless connection.

7. The circulating lifting device as described in claim 1, characterized in that, The control module (10) is mounted on the base (1) and located below the chain (8).

8. The circulating lifting device as described in claim 1, characterized in that, Each of the two chains (8) is provided with a chain fixing frame (801) corresponding to the sliding shaft assembly (6); the two ends of the sliding shaft assembly (6) are connected to the chain fixing frame (801) which is flush with both sides by precision bearings (601).

9. The circulating lifting device as described in claim 1, characterized in that, The bottom of the sliding shaft assembly (6) is provided with a linear slide rail (602), and the top of the hook assembly (7) is provided with a hook slider (701) that can be slidably connected to the linear slide rail (602).

10. The circulating lifting device as described in claim 1, characterized in that, The types of hook assemblies (7) include single hook assemblies (702), left-side adjustable hooks (703) and right-side adjustable hooks (704); the bottom of the hook assembly (7) is provided with a double-linked flexible silicone pad (705) to prevent the flask from slipping.

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