Split type magnetic stirring device

Abstract

This application relates to the field of mixing equipment technology, and more particularly to a split-type magnetic mixing device, comprising: a frame; a limiting cylinder connected to the frame, wherein the limiting cylinder has an opening in its top wall; a deformable material bag located in the inner cavity of the limiting cylinder, wherein the material bag is detachably fixedly connected to the inner wall of the limiting cylinder; a stirring element rotatably connected to the limiting cylinder, wherein the stirring element is located in the inner cavity of the limiting cylinder, and wherein the stirring element can deform the material bag when it rotates; and a driving unit for driving the stirring element to rotate, wherein the driving unit is connected to the frame and the stirring element; this application has the effect of reducing the possibility of cross-contamination between different types of materials while the mixing equipment is used to sequentially mix multiple types of materials.

Description

Technical Field

[0001] This application relates to the field of mixing equipment technology, and in particular to a split-type magnetic mixing device. Background Technology

[0002] Magnetic stirring technology, as a core means of liquid mixing, is irreplaceable in fields such as chemical synthesis, biological culture, and food processing. Currently, mainstream equipment generally follows a three-in-one architecture of "drive unit-stirrer-container." Data from the International Laboratory Equipment Exhibition shows that approximately 87% of commercial stirrers still use a fixed design. Although this mature model ensures the reliability of basic stirring functions, with the implementation of the ISO 14644-1:2015 cleanliness standard and the surge in demand for flexible production, traditional technology is facing two major transformation pressures: first, the mandatory compliance requirements of the pharmaceutical industry for closed operating systems; and second, the urgent need for rapid equipment conversion under multi-variety, small-batch production models.

[0003] The prior art discloses a mixer using a split-type direct-drive motor, which includes a mixing tank. The mixing tank includes a rotor assembly, a rotating shaft, cutters, and a tank body, as well as a base. The base includes a stator assembly and a seat. The rotor assembly is mounted on the bottom of the tank body via the rotating shaft. The mixing tank can be separated from the base. When the mixing tank is placed on the upper part of the base, the stator assembly mounted on the seat can drive the rotor assembly mounted on the tank body to rotate around the rotating shaft, thereby driving the cutters mounted on the rotating shaft to rotate synchronously within the tank body around the rotating shaft. The mixing tank can be directly separated from the base in a direction parallel to the extension of the rotating shaft, or the mixing tank can be directly translated and separated from the base in a plane perpendicular to the extension of the rotating shaft.

[0004] Regarding the aforementioned technologies, the stator assembly drives the rotor assembly to rotate via a rotary shaft, and the rotor assembly is located inside the mixing tank, while the material to be mixed is also located inside the mixing tank. This means that the rotor assembly will come into direct contact with the material to be mixed inside the mixing tank. When the mixing tank is used for mixing multiple types of small batches of materials, there is a possibility of cross-contamination between different types of materials. Summary of the Invention

[0005] In order to reduce the possibility of cross-contamination between different types of materials while the mixing equipment is used to mix multiple types of materials in sequence, this application provides a split-type magnetic mixing equipment.

[0006] The split-type magnetic stirring device provided in this application adopts the following technical solution: A split-type magnetic stirring device, comprising: frame; A limiting cylinder is connected to the frame, and the top wall of the limiting cylinder is provided with an opening; A deformable container bag is located inside the cavity of the limiting cylinder, and the container bag is detachably and fixedly connected to the inner wall of the limiting cylinder. A stirring element is rotatably connected to the limiting cylinder and is located inside the limiting cylinder. When the stirring element rotates, it can cause the container bag to deform. A drive unit for driving the stir bar to rotate, the drive unit being connected to the frame and the stir bar being connected to the stir bar.

[0007] By adopting the above technical solution, the material to be mixed is placed into a container bag, and then the container bag containing the material is placed into a limiting cylinder, or the container bag is placed into the limiting cylinder first, and then the material to be mixed is added into the container bag. Next, the drive unit applies force to the agitator, causing the agitator to rotate and contact the outer wall of the container bag, thus deforming the container bag and mixing the material inside. Since the agitator does not extend into the container bag, it will not adhere to the material being mixed during mixing. When mixing different types of materials, only different container bags need to be replaced. Multiple container bags can be used, each specifically for mixing different materials. The container bag can also be used for single purposes. The designed split-type magnetic stirring device uses the frame as the mounting base for the limiting cylinder and drive unit. The limiting cylinder provides a limiting space for the container bag and a rotating mounting base for the stirrer. The stirrer, in conjunction with the drive unit, can control the deformation of the container bag, thereby achieving the mixing and processing of the material inside the container bag without direct contact with the material to be mixed. This further avoids the possibility of cross-contamination caused by material residue on the stirrer when processing different materials sequentially, and also avoids the need for cleaning and verification of the stirrer, effectively improving the mixing and processing efficiency.

[0008] In one specific implementation, the drive unit includes: A mounting bracket with a push-pull handle, wherein multiple casters are connected to the mounting bracket; The lifting plate is detachably and fixedly connected to the frame, and is movably connected to the mounting frame. The lifting plate can be raised and lowered along the rotation axis of the stirrer. A drive mechanism for driving the stir bar to rotate, the drive mechanism being connected to the lifting plate and capable of being connected to the stir bar.

[0009] By adopting the above technical solution, force is first applied to the mounting frame through the push-pull handle until the mounting frame moves into place. Then, the lifting plate drives the drive mechanism to rise until the drive mechanism is in the drive position. At this time, the agitator in the drive mechanism box can be driven by force. After the material mixing and processing is completed, the lifting plate can be unlocked from the frame to push the drive unit away. The designed drive unit can be used as the installation and movement base of the lifting plate and drive mechanism through the mounting frame. The lifting plate can drive the drive mechanism to rise and fall, thereby realizing the drive cooperation or separation with the agitator. The drive mechanism can realize the drive of the agitator.

[0010] In one specific implementation, the drive mechanism includes: A drive motor is connected to the lifting plate, and the output shaft of the drive motor is coaxial with the rotating shaft of the stirrer. A rotating base, which is coaxially connected to the output shaft of the drive motor, and an active magnetic rotor is embedded in the rotating base; The driven magnetic rotor is embedded in the stirrer, the bottom wall of the limiting cylinder is made of non-magnetic material, and the driven magnetic rotor can achieve magnetic coupling with the active magnetic rotor.

[0011] By adopting the above technical solution, the designed drive mechanism can realize the rotation drive of the rotating seat through the drive motor. The rotating seat can serve as the mounting base for the active magnetic rotor. Through the cooperation of the active magnetic rotor and the driven magnetic rotor, the rotation of the stirrer can be realized through magnetic coupling without passing through the bottom wall of the limiting cylinder. It can also avoid the stirrer getting stuck or damaging the container bag when it encounters large resistance.

[0012] In one specific implementation, the lifting plate is connected to multiple alignment rods, the axial direction of the alignment rods is parallel to the rotation axis of the stirrer, and a positioning block with a positioning hole is formed on the bottom wall of the limiting cylinder, into which the alignment rods can be inserted.

[0013] By adopting the above technical solution, the designed alignment rod and positioning block can cooperate to restrict the position of the lifting plate and the limiting cylinder, thereby preventing the mounting frame from moving when the drive mechanism drives the stirrer to rotate.

[0014] In one specific implementation, the end of the alignment rod away from the lifting plate is formed with a tapered guide head.

[0015] By adopting the above technical solution, the alignment rod with a conical guide head can be designed, which can reduce the difficulty of aligning the alignment rod into the positioning hole.

[0016] In one specific implementation, a transparent plate is embedded on one side of the limiting cylinder to form an observation window.

[0017] By adopting the above technical solution, the designed observation window facilitates the observation of the coordination between the material bag and the agitator inside the limiting cylinder.

[0018] In one specific implementation, a suspension bracket is connected to the frame, and a hopper is connected to the suspension bracket. The hopper has a cone-shaped feeding cavity with openings on both the top and bottom walls.

[0019] By adopting the above technical solution, the designed suspension bracket can serve as the installation foundation for the hopper and provide the installation height for the hopper, making it easy to add materials into the container bag.

[0020] In one specific implementation, a fixing ring is fitted on the top wall of the hopper, and a clamping seam is formed between the fixing ring and the hopper for inserting and fixing the container bag.

[0021] By adopting the above technical solution, the designed fixing ring can facilitate the fixing between the container bag and the hopper, so that when adding materials into the container bag, there is no need for staff to manually fix the container bag.

[0022] In one specific implementation, the lower edge of the retaining ring is formed with a threaded portion, and the retaining ring is threadedly connected to the upper edge of the hopper through the threaded portion.

[0023] By adopting the above technical solution, the designed fixing ring that is threadedly connected to the hopper can facilitate the reliable fixing of the container bag.

[0024] In one specific implementation scheme, multiple sealing plates are slidably connected to the discharge port at the lower end of the hopper, and when the multiple sealing plates move toward the central axis of the hopper, they can enable the material bag to form a sealed cavity below the hopper.

[0025] By adopting the above technical solution, the designed sealing clamp can achieve the sealing operation of the container bag near the lower end of the discharge port of the hopper, thereby forming a sealed cavity. This can reduce the possibility of material overflowing from the top of the hopper when the agitator is stirring the material in the container bag.

[0026] In summary, this application includes at least one of the following beneficial technical effects: The designed split-type magnetic stirring device uses a frame as the mounting base for the limiting cylinder and drive unit. The limiting cylinder provides a limiting space for the container bag and a rotating mounting base for the stirrer. The stirrer, in conjunction with the drive unit, enables deformation control of the container bag, thus achieving mixing and processing of the material inside the container bag without direct contact with the material to be mixed. This further avoids the possibility of cross-contamination caused by material residue on the stirrer when processing different materials sequentially, and also eliminates the need for cleaning and verification of the stirrer, effectively improving the mixing and processing efficiency.

[0027] The designed split-type magnetic stirring device can drive the rotation of the rotating base through a drive motor. The rotating base can serve as the mounting base for the active magnetic rotor. Through the cooperation of the active and driven magnetic rotors, the stirring element can be rotated through magnetic coupling without passing through the bottom wall of the limiting cylinder. This also avoids the stirring element getting stuck or damaging the container bag when encountering large resistance.

[0028] The designed split-type magnetic stirring device, through the sealing clamp, can achieve a tight seal of the container bag near the lower discharge port of the hopper, thereby forming a sealed cavity. This reduces the possibility of material overflowing from the top of the hopper when the stirrer is stirring the material in the container bag. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the split-type magnetic stirring device according to an embodiment of this application.

[0030] Figure 2 Is Figure 1 A schematic diagram of the structure after adding a drive unit to the basic structure.

[0031] Figure 3 yes Figure 2 The schematic diagram in the image is mainly used to illustrate the specific structure of the drive unit.

[0032] Figure 4 Is Figure 2 A structural diagram showing the addition of a suspension bracket, a loading hopper, a fixing ring, and a sealing clamp to the original structure.

[0033] Figure 5 yes Figure 4 Enlarged view of part A in the image.

[0034] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Limiting cylinder; 3. Material bag; 4. Stirring element; 5. Drive unit; 51. Mounting frame; 52. Lifting plate; 53. Drive mechanism; 531. Drive motor; 532. Rotating seat; 533. Active magnetic rotor; 534. Driven magnetic rotor; 54. Alignment rod; 6. Suspension bracket; 7. Feed hopper; 8. Fixing ring; 9. Sealing clamp. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0036] This application discloses a split-type magnetic stirring device.

[0037] Reference Figure 1 A split-type magnetic stirring device includes a frame 1, a limiting cylinder 2, a material container 3, and a stirring element 4. The limiting cylinder 2 is bolted to the frame 1, and the top wall of the limiting cylinder 2 is open. In this application, the horizontal cross-sectional shape of the limiting cylinder 2 can be circular, rectangular, or other shapes without sharp internal protrusions, as long as it can accommodate the material container 3 while reducing the risk of tearing the material container 3. The material container 3 has deformation capability and is located in the inner cavity of the limiting cylinder 2. The material container 3 and the inner cavity wall of the limiting cylinder 2 are detachably fixed. In this application, the material container 3 can be reusable, and there are multiple material containers 3. Each material container 3 is used for stirring a certain material. The material container 3 can also be disposable.

[0038] Reference Figure 1 The agitator 4 is rotatably connected to the limiting cylinder 2, and the rotation axis of the agitator 4 is vertically set. The agitator 4 is located in the inner cavity of the limiting cylinder 2. When the agitator 4 rotates, it can cause the container bag 3 to deform, thereby driving the material in the container bag 3 to mix. In order to facilitate the observation of the mixing and cooperation between the agitator 4 and the container bag 3 in the limiting cylinder 2, a transparent plate is embedded on one side of the limiting cylinder 2 to form an observation window.

[0039] Reference Figure 2 and Figure 3To facilitate the rotation of the stirrer 4, a drive unit 5 is also included. The drive unit 5 is connected to the frame 1 and the stirrer 4. Specifically, the drive unit 5 includes a mounting frame 51, a lifting plate 52, and a drive mechanism 53. A push-pull handle is welded and fixed on the mounting frame 51, and multiple movable wheels are bolted to the mounting frame 51 to enable movement of the mounting frame 51. The lifting plate 52 is detachably and fixedly connected to the frame 1, and is movably connected to the mounting frame 51. The lifting plate 52 can rise and fall along the rotation axis of the stirrer 4. In this application, the rising and falling of the lifting plate 52 can be achieved by a cylinder, a hydraulic cylinder, or other structures. The mounting frame 51 can serve as the base for the installation and movement of the lifting plate 52 and the drive mechanism 53. The lifting plate 52 can drive the drive mechanism 53 to rise and fall, thereby achieving drive engagement or disengagement with the stirrer 4. The drive mechanism 53 can drive the stirrer 4.

[0040] Reference Figure 2 and Figure 3 The drive mechanism 53 is connected to the lifting plate 52 and can also be connected to the stirrer 4 to drive the stirrer 4 to rotate. Specifically, the drive mechanism 53 includes a drive motor 531, a rotating seat 532, an active magnetic rotor 533, and a driven magnetic rotor 534. The drive motor 531 body is bolted to the lifting plate 52, and the output shaft of the drive motor 531 is coaxially arranged with the rotation shaft of the stirrer 4. The rotating seat 532 is coaxially keyed to the output shaft of the drive motor 531. The active magnetic rotor 533 is embedded in the rotating seat 532, and the driven magnetic rotor 534 is embedded in the lower part of the stirrer 4. The bottom wall of the limiting cylinder 2 is made of a non-magnetic material, such as austenitic stainless steel 304 / 316L, glass, or ceramic, and the driven magnetic rotor 534 can cooperate with the active magnetic rotor 533 to achieve magnetic coupling.

[0041] The rotating seat 532 can be driven to rotate by the drive motor 531. The rotating seat 532 can serve as the mounting base for the active magnetic rotor 533. The active magnetic rotor 533 and the driven magnetic rotor 534 can rotate the stirrer 4 through magnetic coupling without passing through the bottom wall of the limiting cylinder 2. This also avoids the stirrer 4 from getting stuck or damaging the container bag 3 when it encounters large resistance.

[0042] Reference Figure 2 and Figure 3Furthermore, multiple alignment rods 54 are welded and fixed on the lifting plate 52. The axial direction of the alignment rods 54 is parallel to the rotation axis of the stirrer 4, and a positioning block with a positioning hole is formed on the bottom wall of the limiting cylinder 2. The alignment rods 54 can be inserted into the positioning hole, and at this time, the alignment rods 54 and the positioning block are slidably connected. More preferably, a conical guide head is formed at the end of the alignment rod 54 away from the lifting plate 52, which makes it easier to reduce the difficulty of aligning the alignment rods 54 and the positioning hole. The position of the lifting plate 52 and the limiting cylinder 2 can be restricted by the cooperation of the alignment rods 54 and the positioning block, thereby preventing the mounting frame 51 from moving when the drive mechanism 53 drives the stirrer 4 to rotate.

[0043] Reference Figure 4 A suspension bracket 6 is welded and fixed on the frame 1, and a hopper 7 is welded and fixed on the suspension bracket 6. The hopper 7 has a cone-shaped feeding cavity with openings on both the top and bottom walls. The suspension bracket 6 can serve as the installation base for the hopper 7 and provide the installation height for the hopper 7. The hopper 7 can facilitate the addition of materials into the container bag 3.

[0044] Reference Figure 5 A fixing ring 8 is fitted on the top wall of the hopper 7. A clamping seam is formed between the fixing ring 8 and the hopper 7 for the material bag 3 to be inserted. After the fixing ring 8 is attached to the hopper 7, the fixing ring 8 works with the hopper 7 to fix the position of the material bag 3. The fixing ring 8 makes it easy to fix the material bag 3 and the hopper 7, so that when adding materials into the material bag 3, the staff does not need to manually fix the material bag 3.

[0045] Reference Figure 5 In order to ensure the reliability of the container bag 3 and prevent it from falling off when the agitator 4 is stirring, the lower edge of the fixing ring 8 is threaded. The fixing ring 8 is threadedly connected to the upper edge of the hopper 7 through the threaded part, thereby pressing the container bag 3 tightly.

[0046] Reference Figure 4 and Figure 5 Multiple sealing plates 9 are slidably connected at the lower discharge port of the hopper 7. When the multiple sealing plates 9 move toward the central axis of the hopper 7, they can make the container bag 3 close to the lower discharge port of the hopper 7 to form a sealing area, thereby forming a sealed cavity in the lower area of ​​the container bag 3 in the hopper 7. In this application, the sealing plates 9 can be driven by a screw, a cylinder, or other structures, as long as they can drive the sealing plates 9 to move toward the central axis of the hopper 7. Through the sealing plates 9, the container bag 3 can be closed and sealed near the lower discharge port of the hopper 7, thereby forming a sealed cavity. This can reduce the possibility of material overflowing from the top of the hopper 7 when the agitator 4 is stirring the material in the container bag 3.

[0047] The implementation principle of the split-type magnetic stirring device in this application embodiment is as follows: First, force is applied to the mounting frame 51 by pushing and pulling the handle until the mounting frame 51 moves into place. Then, the lifting plate 52 drives the drive mechanism 53 to rise until the drive mechanism 53 is in the drive position. At this time, the drive mechanism 53 applies force to the stirrer 4 to drive the stirrer 4. Next, the material to be stirred is put into the container bag 3, and then the container bag 3 containing the material is put into the limiting cylinder 2, or the container bag 3 is put into the limiting cylinder 2 first, and then the material to be stirred is added into the container bag 3. 4. While rotating, it contacts the outer wall of the container bag 3 and causes the container bag 3 to deform, thereby stirring the material inside the container bag 3. After the material stirring is completed, the lifting plate 52 can be unlocked from the frame 1 to push the drive unit 5 away. Since the stirring bar 4 does not extend into the container bag 3, the stirring bar 4 will not stick to the material to be stirred during stirring. When stirring different types of materials, it is only necessary to replace different container bags 3. There can be multiple container bags 3, each container bag 3 is dedicated to stirring different materials. The container bag 3 can also be disposable.

[0048] The frame 1 serves as the mounting base for the limiting cylinder 2 and the drive unit 5. The limiting cylinder 2 provides a limiting space for the container bag 3 and a rotating mounting base for the agitator 4. The agitator 4, in conjunction with the drive unit 5, enables deformation control of the container bag 3, thereby achieving mixing and processing of the material inside the container bag 3 without direct contact with the material to be mixed. This further avoids the possibility of cross-contamination caused by material residue on the agitator 4 when processing different materials sequentially, and also avoids the need for cleaning and verification of the agitator 4, effectively improving the mixing and processing efficiency.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A split-type magnetic stirring device, characterized in that: include: Rack (1); A limiting cylinder (2) is connected to the frame (1), and the top wall of the limiting cylinder (2) is provided with an opening; A deformable container bag (3) is located in the inner cavity of the limiting cylinder (2), and the container bag (3) is detachably and fixedly connected to the inner cavity wall of the limiting cylinder (2). A stirring element (4) is rotatably connected to the limiting cylinder (2), and the stirring element (4) is located in the inner cavity of the limiting cylinder (2). When the stirring element (4) rotates, it can cause the container bag (3) to deform. A drive unit (5) for driving the stirrer (4) to rotate, the drive unit (5) being connected to the frame (1) and the stirrer (4).

2. The split-type magnetic stirring device according to claim 1, characterized in that: The driving unit (5) includes: A mounting bracket (51) with a push-pull handle, wherein a plurality of casters are connected to the mounting bracket (51); The lifting plate (52) is detachably and fixedly connected to the frame (1), and is movably connected to the mounting frame (51). The lifting plate (52) can be raised and lowered along the rotation axis of the stirrer (4). A drive mechanism (53) for driving the stirrer (4) to rotate, the drive mechanism (53) is connected to the lifting plate (52), and the drive mechanism (53) can be connected to the stirrer (4).

3. The split-type magnetic stirring device according to claim 2, characterized in that: The drive mechanism (53) includes: A drive motor (531) is connected to the lifting plate (52), and the output shaft of the drive motor (531) is coaxially arranged with the rotating shaft of the stirrer (4); A rotating base (532) is coaxially connected to the output shaft of the drive motor (531), and an active magnetic rotor (533) is embedded on the rotating base (532); The driven magnetic rotor (534) is embedded in the stirrer (4), the bottom wall of the limiting cylinder (2) is made of non-magnetic material, and the driven magnetic rotor (534) can achieve magnetic coupling with the active magnetic rotor (533).

4. The split-type magnetic stirring device according to claim 2, characterized in that: The lifting plate (52) is connected to multiple alignment rods (54). The axial direction of the alignment rods (54) is parallel to the rotation axis of the stirrer (4). A positioning block with a positioning hole is formed on the bottom wall of the limiting cylinder (2). The alignment rods (54) can be inserted into the positioning hole.

5. The split-type magnetic stirring device according to claim 4, characterized in that: The end of the alignment rod (54) away from the lifting plate (52) has a conical guide head.

6. The split-type magnetic stirring device according to claim 1, characterized in that: A transparent plate is embedded on one side of the limiting cylinder (2) to form an observation window.

7. The split-type magnetic stirring device according to any one of claims 1-6, characterized in that: The frame (1) is connected to a suspension bracket (6), and the suspension bracket (6) is connected to a hopper (7). The hopper (7) has a cone-shaped feeding cavity with openings on both the top and bottom walls.

8. The split-type magnetic stirring device according to claim 7, characterized in that: A fixing ring (8) is fitted on the top wall of the hopper (7), and a clamping seam is formed between the fixing ring (8) and the hopper (7) for inserting and fixing the container bag (3).

9. The split-type magnetic stirring device according to claim 8, characterized in that: The lower edge of the fixing ring (8) is formed with a threaded portion, and the fixing ring (8) is threadedly connected to the upper edge of the hopper (7) through the threaded portion.

10. The split-type magnetic stirring device according to claim 8, characterized in that: Multiple sealing plates (9) are slidably connected at the lower outlet of the hopper (7), and when the multiple sealing plates (9) move toward the central axis of the hopper (7), the container bag (3) can form a sealed cavity below the hopper (7).

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