A magnetic stirrer for wastewater detection

Abstract

The application discloses a magnetic stirrer for wastewater detection, which comprises a magnetic stirring mechanism, a rotating magnetic steel and a driving motor installed on the rotating magnetic steel; a center positioning mechanism, a support plate arranged above the magnetic stirring mechanism and two clamping plates above the support plate, the bottom of the support plate is provided with two positioning magnet blocks with opposite magnetism, and the side of each positioning magnet block is slid downward obliquely to both sides through a connecting rod along an inclined slide. The two positioning magnet blocks produce the same magnetic force adsorption on the stirring son, so that the stirring son is placed in the middle of a glass test cup, and the two positioning magnet blocks at the bottom are continuously pushed downward and uniformly slide downward obliquely to both sides along the inclined slide, so that the both ends of the stirring son are uniformly stressed and always located in the middle, and the magnetic stirring through the magnetic stirring mechanism at the bottom is facilitated.

Description

Technical Field

[0001] This invention relates to the field of wastewater testing technology, and in particular to a magnetic stirrer for wastewater testing. Background Technology

[0002] Magnetic stirrers utilize the principles of magnetic fields and vortices. After liquid is placed in a container, the stir bar is simultaneously placed into the liquid. When the base generates a magnetic field, it drives the stir bar to move in a circular motion, thereby achieving the purpose of stirring the liquid. It is suitable for stirring or heating simultaneously. Therefore, magnetic stirrers are also used when testing wastewater to achieve the functions of stirring and heating.

[0003] For example, Chinese Utility Model Patent (CN202022160263.2) discloses a magnetic stirrer. This magnetic stirrer includes a casing and a height-adjustable tray placed on the casing. A receiving space is formed between the tray and the casing, and a level detection device is installed within this space. The level detection device includes a sensing component and a magnet. The sensing component is fixed to the casing, and the magnet is fixed to the portion of the tray used to hold the container. The sensing component and the magnet are spaced apart to detect the magnetic field of the magnet. This magnetic stirrer uses the level detection device to detect whether the tray is level. When the tray is not level, the sensing component detects a change in the magnetic field and sends a signal to adjust the tray to a level position. This keeps the container on the tray level, allowing the stir bar to stir evenly within the container. The stir bar does not strike the container wall, thus maintaining the stirring force, improving the stirring effect, making the stirring more uniform, and reducing container damage.

[0004] However, when the inventors implemented this device, they discovered the following drawbacks: It stores wastewater in a glass test cup. The stir bar is placed inside the glass test cup, and the magnetic field of the magnetic stirrer rotates the stir bar. When placing the stir bar, it needs to be positioned in the middle of the glass test cup and aligned with the magnetic position of the bottom magnetic stirrer to provide proper stirring. For larger cups or those with a large bottom, or for some wastewater that is quite turbid, placing the stir bar in the middle of the bottom is difficult. It requires repeatedly moving the stir bar to the middle of the cup using a glass rod. Turbid wastewater is inconvenient to handle and affects wastewater testing efficiency. Summary of the Invention

[0005] Based on this, it is necessary to provide a magnetic stirrer for wastewater testing to address the aforementioned technical problems. The glass test cup is fixed by two clamping plates and placed in the middle of a support plate, facilitating the rotation of the stir bar by the magnetic stirring mechanism at the bottom. Two positioning magnets generate the same magnetic attraction to the stir bar, placing it in the middle of the glass test cup. By continuously moving downwards, the two positioning magnets at the bottom are pushed evenly along the inclined slide to both sides and downwards, so that the stir bar is evenly stressed at both ends and always located in the middle, facilitating magnetic stirring by the magnetic stirring mechanism at the bottom.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A magnetic stirrer for wastewater testing, comprising:

[0008] A magnetic stirring mechanism, comprising a rotating magnet and a drive motor mounted on the rotating magnet;

[0009] The central positioning mechanism includes a support plate located above the magnetic stirring mechanism and two clamping plates above the support plate. Two positioning magnets with opposite magnetic properties are provided at the bottom of the support plate. One side of each positioning magnet slides obliquely downwards and to both sides along an inclined slide via a connecting rod.

[0010] As a preferred embodiment of the magnetic stirrer for wastewater testing provided by the present invention, it further includes a side mounting plate, the inclined slide is formed on the side mounting plate, and the ends of the two connecting rods are connected by a tension spring.

[0011] In a preferred embodiment of the magnetic stirrer for wastewater testing provided by the present invention, the opposing surfaces of the two clamping plates are provided with arc-shaped grooves, and the top of the clamping plates is inclined inward.

[0012] In a preferred embodiment of the magnetic stirrer for wastewater testing provided by the present invention, a side plate is provided on the side of the clamping plate near the side mounting plate, and the two clamping plates move laterally with the side plate via a slider.

[0013] In a preferred embodiment of the magnetic stirrer for wastewater testing provided by the present invention, a gear ring is rotatably connected to the side plate, a spiral spring is installed at the shaft of the gear ring, and a rack is meshed with the upper and lower ends of the gear ring, respectively. The two racks are respectively connected to the sliders corresponding to the two clamping plates.

[0014] In a preferred embodiment of the magnetic stirrer for wastewater testing provided by the present invention, the support plate is horizontally inserted into the lower part of the side plate.

[0015] In a preferred embodiment of the magnetic stirrer for wastewater testing provided by the present invention, a rack is installed on one side of the support plate, and the rack is meshed with a gear ring that is rotatably connected to the side plate.

[0016] In a preferred embodiment of the magnetic stirrer for wastewater testing provided by the present invention, a support frame is vertically slidably connected to both sides of the side plate, a limit block is installed at the bottom of the support frame, a rack three is installed on one side of the support frame, and the rack three is meshed with a gear ring three coaxially installed on the gear ring two.

[0017] In a preferred embodiment of the magnetic stirrer for wastewater testing provided by the present invention, a control frame is fixed on the support frame and vertically slidably connected to the side mounting plate, and a drive screw is installed on the control frame.

[0018] In a preferred embodiment of the magnetic stirrer for wastewater testing provided by the present invention, the width of the control frame is less than the bottom distance between the two inclined slides.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This invention provides a magnetic stirrer for wastewater testing. A glass test cup containing wastewater is placed between two clamping plates, and a stir bar is inserted into the glass test cup. The two clamping plates fix the glass test cup in place, positioning it in the middle of a support plate. This allows the stir bar to rotate and be stirred by a magnetic stirring mechanism at the bottom. Two positioning magnets with opposite magnetic properties are installed at the bottom of the support plate. Through magnetic force, the two positioning magnets attract the stir bar with equal magnetic force, placing it in the middle of the glass test cup. Continuous downward movement pushes the two positioning magnets at the bottom to slide evenly along an inclined slide, ensuring that the stir bar is evenly stressed at both ends and always remains in the middle, facilitating magnetic stirring by the bottom magnetic stirring mechanism. Attached Figure Description

[0021] To more clearly illustrate the solutions in this invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 Schematic diagram of the structure after the clamping plate is moved down according to the present invention Figure 1 ;

[0024] Figure 3 Schematic diagram of the structure after the clamping plate is moved down according to the present invention Figure 2 ;

[0025] Figure 4 Schematic diagram of the central positioning mechanism provided by the present invention Figure 1 ;

[0026] Figure 5 Schematic diagram of the central positioning mechanism provided by the present invention Figure 2 .

[0027] The markings in the diagram are explained as follows:

[0028] 1. Magnetic stirring mechanism; 2. Side mounting plate; 3. Clamping plate; 4. Support plate; 5. Positioning magnet block; 6. Side plate; 7. Inclined slide; 8. Gear ring three; 9. Control frame; 10. Connecting rod; 11. Support frame; 12. Limiting block; 13. Drive screw; 14. Tension spring; 15. Gear ring one; 16. Rack one; 17. Rack three; 18. Rack two; 19. Gear ring two. Implementation

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0030] As described in the background section, for large-volume glass test cups or those with large bottoms, it is difficult to place the stir bar in the middle of the bottom of the cup. It is necessary to repeatedly move the stir bar to the middle of the cup with a glass rod, which is inconvenient to operate and affects the efficiency of wastewater testing.

[0031] To address this technical problem, the present invention provides a magnetic stirrer for wastewater testing, which is applied in the field of wastewater testing technology.

[0032] For details, please refer to Figure 1-5 A magnetic stirrer for wastewater testing, comprising:

[0033] The magnetic stirring mechanism 1 includes a rotating magnet and a drive motor mounted on the rotating magnet.

[0034] The central positioning mechanism includes a support plate 4 located above the magnetic stirring mechanism 1 and two clamping plates 3 above the support plate 4. Two positioning magnet blocks 5 with opposite magnetic properties are provided at the bottom of the support plate 4. One side of each positioning magnet block 5 slides obliquely downwards and to both sides along the inclined slide 7 via a connecting rod 10.

[0035] This invention provides a magnetic stirrer for wastewater testing. A glass test cup containing wastewater is placed between two clamping plates 3, and a stir bar is inserted into the glass test cup. The two clamping plates 3 fix the glass test cup in place, positioning it in the middle of a support plate 4. This allows the stir bar to rotate and be stirred by the magnetic stirring mechanism 1 at the bottom. Two opposing magnetic positioning magnets 5 are installed at the bottom of the support plate 4. Through magnetic force, the two positioning magnets 5 attract the stir bar with the same magnetic force, placing it in the middle of the glass test cup. Continuous downward movement pushes the two positioning magnets 5 at the bottom to slide evenly along the inclined slide 7 to both sides, ensuring that the stir bar is evenly stressed at both ends and always remains in the middle, facilitating magnetic stirring by the magnetic stirring mechanism 1 at the bottom.

[0036] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0037] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Example

[0039] Please refer to Figure 1 In this embodiment, a magnetic stirrer for wastewater testing includes a magnetic stirring mechanism 1, which includes a rotating magnet and a drive motor mounted on the rotating magnet. The drive motor in the magnetic stirring mechanism 1 drives the rotating magnet to rotate, thereby driving the stir bar above to rotate, achieving the purpose of controlling the stirring. The magnetic drive mechanism of the magnetic stirring mechanism 1 is existing technology, and the technical solution of this application will not be described in detail.

[0040] Please refer to Figure 1-3In this embodiment, the central positioning mechanism includes a support plate 4 positioned above the magnetic stirring mechanism 1 and two clamping plates 3 above the support plate 4. The opposing surfaces of the two clamping plates 3 have arc-shaped grooves. The tops of the clamping plates 3 are inclined inwards, facilitating the insertion of the glass test cup from top to bottom between the two clamping plates 3 and locking it through the arc-shaped grooves. The arc-shaped grooves also enclose the glass test cup, providing insulation and improving heating. Two opposing magnetic positioning magnets 5 are located at the bottom of the support plate 4. One side of each positioning magnet 5 slides diagonally downwards along the inclined slide 7 via a connecting rod 10. Because the bottom of the support plate 4 is equipped with two opposing magnetic positioning magnets… Block 5, through the action of magnetic force, two positioning magnet blocks 5 respectively generate the same magnetic attraction to the stir bar, placing it in the middle of the glass test cup, and by continuously moving downward, push the two positioning magnet blocks 5 at the bottom to slide evenly to both sides and downward along the inclined slide 7, so that the two ends of the stir bar are evenly stressed and always located in the middle. It also includes a side mounting plate 2, the inclined slide 7 is opened on the side mounting plate 2, and the ends of the two connecting rods 10 are connected by a tension spring 14. The tension spring 14 can move the two connecting rods 10 and the positioning magnet blocks 5 towards the middle, which plays a role in resetting. The clamping plate 3 is provided with a side plate 6 on the side near the side mounting plate 2. The two clamping plates 3 move laterally with the side plate 6 through the slider, which facilitates the stable horizontal movement of the clamping plates 3. Example

[0041] The magnetic stirrer for wastewater testing provided in Example 1 has been further optimized. For details, please refer to... Figure 1 and 5 In this embodiment, a side mounting plate 2 is also included. An inclined slide 7 is provided on the side mounting plate 2. The ends of the two connecting rods 10 are connected by a tension spring 14. A side plate 6 is provided on the side of the clamping plate 3 near the side mounting plate 2. The two clamping plates 3 move laterally with the side plate 6 via sliders. A gear ring 15 is rotatably connected to the side plate 6. A spiral spring is installed at the pivot of the gear ring 15. The upper and lower ends of the gear ring 15 are respectively engaged with racks 16. The two racks 16 are respectively connected to the corresponding sliders of the two clamping plates 3. The sliders on the two clamping plates 3 are engaged with the racks 16 and the gear ring 15, so that the two clamping plates 3 can move synchronously, which facilitates fixing the glass test cup in the middle, placing the stir bar in the middle position, and resetting it by the spiral spring. Example

[0042] The magnetic stirrer for wastewater testing provided in Example 1 or 2 has been further optimized, such as... Figure 3-5As shown, the support plate 4 is horizontally inserted into the lower part of the side plate 6. A rack 18 is installed on one side of the support plate 4. The rack 18 is engaged with a gear ring 19 that is rotatably connected to the side plate 6. Through the gear ring 19, the rack 18 and the support plate 4 can be moved, thereby pulling the support plate 4 out from the bottom of the glass test cup, so that the magnetic stirring mechanism 1 at the bottom can better drive the stir bar.

[0043] Among them, such as Figure 4-5 As shown, support frames 11 are vertically slidably connected to both sides of the side plate 6. Limit blocks 12 are installed at the bottom of the support frames 11. A rack 3 17 is installed on one side of the support frame 11. The rack 3 17 is meshed with a rack 3 8 that is coaxially installed on the rack 3 19. A control frame 9 is fixed on the support frame 11 and vertically slidably connected to the side mounting plate 2. A drive screw 13 is installed on the control frame 9. The width of the control frame 9 is less than the bottom distance between the two inclined slides 7. The control frame 9 is driven by the drive screw 13. The support frame 11 moves downward, thereby driving the gear ring 8 and gear ring 19 to rotate synchronously through the rack 3 17, thus pulling the support plate 4 out from the bottom of the glass test cup. Conversely, the control frame 9 and the support frame 11 move upward, inserting the support plate 4 into the bottom of the glass test cup, thereby supporting the glass test cup and moving the glass test cup to the initial position, making it convenient to place new glass test cups that need to be stirred into the two clamping plates 3. Repeat the operation to achieve the purpose of automatic feeding and unloading.

[0044] The process of using a magnetic stirrer for wastewater testing provided by this invention is as follows: A glass test cup containing wastewater is placed between two clamping plates 3, and a stir bar is inserted into the glass test cup. The glass test cup is fixed by the two clamping plates 3 and placed in the middle of the support plate 4, so that the stir bar can be rotated and stirred by the magnetic stirring mechanism 1 at the bottom. Since two positioning magnets 5 with opposite magnetic properties are installed at the bottom of the support plate 4, the two positioning magnets 5 generate the same magnetic attraction to the stir bar through the magnetic force, so that it is placed in the middle of the glass test cup. By continuously moving downward, the two positioning magnets 5 at the bottom are pushed to slide evenly along the inclined slide 7 to both sides and downward, so that the stir bar is evenly stressed at both ends and always located in the middle, which facilitates magnetic stirring by the magnetic stirring mechanism 1 at the bottom.

[0045] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0046] Obviously, the embodiments described above are merely some embodiments of the present invention, not all embodiments. The accompanying drawings show preferred embodiments of the present invention, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this invention.

Claims

1. A magnetic stirrer for wastewater testing, characterized in that, It includes: A magnetic stirring mechanism (1) includes a rotating magnet and a drive motor mounted on the rotating magnet; The central positioning mechanism includes a support plate (4) located above the magnetic stirring mechanism (1) and two clamping plates (3) above the support plate (4). Two positioning magnet blocks (5) with opposite magnetic properties are provided at the bottom of the support plate (4). One side of each positioning magnet block (5) slides obliquely downward to both sides along the inclined slide (7) via a connecting rod (10). It also includes a side mounting plate (2), the inclined slide (7) is opened on the side mounting plate (2), and the ends of the two connecting rods (10) are connected by a tension spring (14); The clamping plate (3) is provided with a side plate (6) on the side near the side mounting plate (2), and the two clamping plates (3) move laterally with the side plate (6) via a slider; A gear ring (15) is rotatably connected to the side plate (6). A spiral spring is installed at the shaft of the gear ring (15). The upper and lower ends of the gear ring (15) are respectively engaged with a rack (16). The two racks (16) are respectively connected to the corresponding sliders of the two clamping plates (3).

2. The magnetic stirrer for wastewater testing according to claim 1, characterized in that, The two clamping plates (3) have arc-shaped grooves on their opposite surfaces, and the top of the clamping plates (3) is inclined inward.

3. The magnetic stirrer for wastewater testing according to claim 2, characterized in that, The support plate (4) is inserted horizontally below the side plate (6).

4. The magnetic stirrer for wastewater testing according to claim 3, characterized in that, A rack two (18) is installed on one side of the support plate (4), and the rack two (18) is engaged with a gear ring two (19) that is rotatably connected to the side plate (6).

5. A magnetic stirrer for wastewater testing according to claim 4, characterized in that, The side plate (6) is vertically slidably connected to the two sides of the support frame (11), and the bottom of the support frame (11) is equipped with a limit block (12). A rack three (17) is installed on one side of the support frame (11), and the rack three (17) is meshed with a rack three (8) that is coaxially installed on the rack three (19).

6. A magnetic stirrer for wastewater testing according to claim 5, characterized in that, A control frame (9) is fixed on the support frame (11) and vertically slidably connected to the side mounting plate (2). A drive screw (13) is installed on the control frame (9).

7. A magnetic stirrer for wastewater testing according to claim 6, characterized in that, The width of the control box (9) is less than the bottom spacing of the two inclined slides (7).

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