Stirring machine for coagulation experiment

Abstract

The utility model relates to the technical field of water treatment agent experiment equipment, and discloses a coagulation experiment stirrer, which comprises a machine body with an inner cavity and a plurality of beakers placed in the machine body, a stirring mechanism is arranged in the machine body, the stirring mechanism comprises a first motor and a plurality of rotating shafts, the first motor is in transmission connection with the rotating shafts, and the rotating shafts are in transmission connection with the inner cavity. A square driving block is arranged at the bottom of the rotating shaft, a stirring shaft is arranged on the square driving block, a square groove is formed in the top of the stirring shaft, the square driving block is matched with the stirring shaft in an inserted mode, and a locking assembly is arranged between the square driving block and the stirring shaft. Stirring blades inserted into a beaker are arranged at the bottom of the stirring shaft. The beaker fixing device has the advantages of being ingenious in structure, easy to use, convenient to operate, high in automation degree and capable of automatically fixing a beaker, shortening the installation time of the beaker and improving the experiment efficiency and the experiment accuracy, and stirring blades are convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment agent experimental equipment, in particular to a coagulation experimental mixer. Background Art

[0002] Coagulation process is widely used in water supply and wastewater treatment, and is one of the important water treatment technologies. Through coagulation test, we can understand the determination of the main parameters in the coagulation process: such as the type of coagulant, the determination of the amount of coagulant added, and other related factors affecting the coagulation conditions. The coagulation test is generally carried out in a coagulation test mixer. The equipment includes several independent beakers. After adding the raw water for the test to the beaker, different proportions of water treatment agents are added. After stirring for a period of time, the amount of flocculants in the beaker and the color of the water are observed, and water samples are taken to test the turbidity.

[0003] The existing Chinese utility model patent application number is 202122331084.5, which discloses a coagulation test mixer, which includes a body, a stirring device and several test containers, the body is provided with the stirring device, and the body is also provided with a cavity for accommodating the test container, the stirring device includes a driving motor and several stirring paddles, the driving motor and the stirring paddle are dynamically connected, the stirring paddle is inserted into the test container, transparent cover plates are provided on both sides of the cavity, the transparent cover plate and the body are movably connected, an exhaust device is provided on the body, the exhaust device is used to extract the gas in the cavity, a filtering device is provided at the connection between the exhaust device and the body, an air inlet is provided on the body, the air inlet is communicated with the cavity, a control switch is provided on the body, and the control switch, the driving motor and the exhaust device are electrically connected.

[0004] The prior art has the following technical defects: the stirring paddle of the above-mentioned coagulation test mixer is detachably fixed on the rotating shaft by means of a thread. The stirring paddle needs to be disassembled and assembled from the rotating shaft once for each experiment. Due to the limited internal space of the machine body, the stirring paddle can only be twisted to a certain angle each time. The stirring paddle needs to be twisted repeatedly for many times to be installed and removed into place. The installation and removal of the stirring paddle is troublesome, time-consuming and labor-intensive, and affects the efficiency of the experiment. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a coagulation experiment mixer to solve the problem in the prior art that the stirring paddle is troublesome to assemble and disassemble, which is time-consuming and labor-intensive and affects the experimental efficiency.

[0006] The utility model solves the above technical problems through the following technical means: a coagulation experimental mixer, comprising a body with an inner cavity and a plurality of beakers placed in the body, a stirring mechanism is arranged in the body, the stirring mechanism comprises a first motor and a plurality of rotating shafts, the first motor and the rotating shaft are transmission-connected, a square driving block is arranged at the bottom of the rotating shaft, a stirring shaft is arranged on the square driving block, a square groove is arranged at the top of the stirring shaft, the square driving block is plug-fitted with the stirring shaft, a locking assembly is arranged between the square driving block and the stirring shaft, and a stirring blade for inserting into the beaker is arranged at the bottom of the stirring shaft.

[0007] Furthermore, the side wall of the square driving block is provided with an inwardly recessed mounting groove, the locking assembly is located in the mounting groove, the locking assembly includes a spherical locking pin and a spring, one end of the spring is fixedly connected to the inner wall of the mounting groove, and the other end is fixedly connected to one end of the spherical locking pin, and the spherical locking pin is slidably matched with the mounting groove.

[0008] Furthermore, a collar is provided on the surface of one end of the suction pipe away from the sweeper body, a pull rope is provided between the collar and the swing arm, and two ends of the pull rope are respectively fixedly connected to the top of the collar and the bottom of the swing arm.

[0009] Furthermore, an extrusion slope for extruding the spherical locking pin is provided on the top of the stirring shaft in the circumferential direction of the square groove.

[0010] Furthermore, a connecting plate and a telescopic member are provided in the body, an adjusting plate slidably connected to the connecting plate and receivable in the connecting plate, and a power mechanism for driving the adjusting plate to move are provided on the connecting plate, an end face of one end of the connecting plate is provided with a sliding cavity extending along the width direction of the connecting plate and open toward one side of the end face, the adjusting plate is slidably arranged in the concave cavity along the width direction of the connecting plate, the power mechanism is located in the concave cavity and is respectively connected to the adjusting plate and the inner side wall of the concave cavity, the telescopic member is located below the connecting plate, the telescopic end of the telescopic member is fixedly connected to the bottom of the connecting plate, and the adjusting plate is used to carry a beaker.

[0011] Furthermore, a guide rod is slidably provided on the connecting plate, the guide rod is vertically arranged, and the bottom end of the guide rod is fixed on the bottom wall of the machine body.

[0012] Furthermore, the power mechanism includes a U-shaped groove, a Z-shaped transmission plate, gears, a transmission rod and a second motor. There are two U-shaped grooves and they are symmetrically arranged, one of which is fixedly connected to the concave cavity and pressed against the inner wall of the concave cavity, and the other is slidably connected to the concave cavity and fixedly connected to the adjustment plate. There are two Z-shaped transmission plates and they are slidably arranged in the U-shaped grooves respectively. Two gears are arranged in each of the U-shaped grooves, and the gears are respectively transmission-connected to the Z-shaped transmission plates. A transmission rod is connected to each of the gears, and the transmission rods on the gears on the same side of the two U-shaped grooves are hinged, and the output end of the second motor is transmission-connected to a gear in the U-shaped groove fixedly connected to the inner wall of the concave cavity.

[0013] Furthermore, teeth are respectively arranged at both ends of the Z-shaped transmission plate, and the gears are respectively meshed with the teeth of the Z-shaped transmission plate for transmission.

[0014] Furthermore, a control panel is provided on the surface of the machine body, and the first motor, the second motor and the telescopic member are all electrically connected to the control panel.

[0015] Furthermore, a cylindrical connecting seat is provided at the bottom of the beaker, a positioning groove which is plugged into the connecting seat is provided on the adjusting plate, and the connecting seat is inserted into the positioning groove and is magnetically connected to the adjusting plate.

[0016] Furthermore, a positioning column for installing and positioning the connecting seat is also provided between the mutually magnetically attracted surfaces of the connecting seat and the positioning groove. There are multiple positioning columns, and the multiple positioning columns are evenly distributed on the bottom wall of the positioning groove. A connecting groove is provided at the position corresponding to each positioning column on the connecting seat, and the positioning column is plugged into and matched with the connecting groove.

[0017] The beneficial effects of the utility model are as follows: through the plug-in cooperation between the square drive block and the stirring shaft, when in use, it is only necessary to align the square groove with the square drive block and insert it. Under the action of the locking assembly, the two are locked and fixed to complete the installation of the stirring blade. When disassembling, the installation steps are reversed, and there is no need to repeatedly twist the stirring shaft. The installation and disassembly of the stirring blade is convenient and quick, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention can be further described by the non-limiting embodiments given in the accompanying drawings;

[0019] Figure 1 It is a structural schematic diagram of a coagulation experiment mixer of the utility model;

[0020] Figure 2 yes Figure 1 A front view of

[0021] Figure 3 yes Figure 1 Schematic diagram of the local structure;

[0022] Figure 4 It is a structural schematic diagram of the connecting plate in the utility model;

[0023] Figure 5 yes Figure 4 A schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 6 It is a structural schematic diagram of a beaker in the utility model;

[0025] Figure 7 yes Figure 6 A schematic diagram of a local enlarged structure;

[0026] Figure 8 It is a cross-sectional view of the stirring mechanism in the utility model;

[0027] Fig. 9 yes Figure 8 A schematic diagram of the enlarged structure at B in the middle;

[0028] Fig.10 It is a structural schematic diagram of the stirring shaft in the utility model.

[0029] Fig.11 It is a structural schematic diagram of the power mechanism of the utility model in a contracted state.

[0030] Fig.12 It is a structural schematic diagram of the pushing mechanism in the utility model in an extended state.

[0031] In the above drawings: 1. body; 2. beaker; 3. rotating shaft; 4. belt; 5. support plate; 6. fixing plate; 7. square drive block; 8. mounting plate; 9. spherical locking pin; 10. spring; 11. mounting groove; 12. stirring shaft; 13. square groove; 14. stirring blade; 15. connecting plate; 16. adjusting plate; 17. telescopic part; 18. guide rod; 19. U-shaped groove; 20. Z-shaped transmission plate; 21. gear; 22. transmission rod; 23. second motor; 24. control panel; 25. positioning groove; 26. positioning column; 27. connecting seat; 28. first motor. DETAILED DESCRIPTION

[0032] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are only for exemplary descriptions, and they are only schematic diagrams, not physical diagrams, and cannot be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts in the figures may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the figures may be omitted.

[0033] The same or similar numbers in the figures of the embodiments of the present invention correspond to the same or similar parts. In the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the figure. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the figures are only used for illustrative purposes and cannot be understood as limitations on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. In the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0034] like Figure 1-12 As shown, an embodiment of the utility model proposes a coagulation experiment mixer, including a body 1 with an inner cavity and a plurality of beakers 2 placed in the body 1, a stirring mechanism is arranged in the body 1, the stirring mechanism includes a first motor 28 and six rotating shafts 3, the first motor 28 and the rotating shafts 3 are transmission connected, in this embodiment, a sealing plate (not shown in the figure) can be movably installed on the front of the body 1 so as to control and maintain the optimal temperature of the coagulation experiment, the body 1 can adopt a constant temperature box in the prior art to ensure the accuracy of the experimental results, a support plate 5 and a fixed plate 6 are fixedly installed on the inner wall of the body 1, the motor is fixedly penetrated on the support plate 5, the six rotating shafts 3 are all rotatably penetrated on the fixed plate 6 through bearings, and the six rotating shafts 3 are arranged side by side and spaced along the length direction of the fixed plate 6, and two adjacent rotating shafts 3 are transmission connected by belts 4 and belt 4 wheels, and the output end of the first motor 28 is fixedly connected to the top of one of the rotating shafts 3.

[0035] A square driving block 7 is fixed at the center position of the bottom of the rotating shaft 3, and a stirring shaft 12 is arranged on the square driving block 7. A downwardly recessed square groove 13 is arranged at the bottom of the stirring shaft 12. The square driving block 7 is adapted to the square groove 13 and the two are plugged together. A locking assembly is arranged between the square driving block 7 and the stirring shaft 12. A stirring blade 14 for inserting into the beaker 2 is fixed at the bottom of the stirring shaft 12. In this embodiment, a mounting plate 8 is integrally formed on the top of the square driving block 7. The size of the mounting plate 8 matches the rotating shaft 3. The mounting plate 8 is fitted to the bottom end of the rotating shaft 3 and is fixed to the rotating shaft 3 by bolts.

[0036] Any side wall of the square drive block 7 is provided with a mounting groove 11 recessed in the horizontal direction, and the locking assembly is located in the mounting groove 11. The locking assembly includes a spherical lock pin 9 and a spring, one end of the spring is fixedly connected to the inner wall of the mounting groove 11, and the other end is fixedly connected to one end of the spherical lock pin 9, and the spherical lock pin 9 is slidably matched with the mounting groove 11. The top of the stirring shaft 12 is provided with an extrusion slope for extruding with the spherical lock pin 9 in the circumferential direction of the square groove 13.

[0037] In this embodiment, when the stirring shaft 12 needs to be installed on the rotating shaft 3, it is only necessary to align the square groove 13 with the square driving block 7, and then forcefully squeeze the stirring shaft 12 upward until the top of the stirring shaft 12 abuts against the mounting plate 8, and the installation of the stirring shaft 12 is completed. At this time, the spherical lock pin 9 is tightly pressed against the stirring shaft 12 under the action of the spring, so that the square driving block 7 and the stirring shaft 12 are locked and fixed. When the stirring shaft 12 needs to be removed from the square driving block 7, it is only necessary to forcefully pull the stirring shaft 12 downward, and the stirring shaft 12 can be easily separated from the square driving block 7. The structure is simple, easy to use, and the assembly and disassembly of the stirring shaft 12 is easy and quick. The set extrusion slope is convenient for the stirring shaft 12 to control the position of the moving spherical lock pin 9 through the extrusion slope under the elastic action of the spring.

[0038] A connecting plate 15 and a telescopic member 17 are provided in the machine body 1. An adjusting plate 16 slidably connected to the connecting plate 15 and receivable in the connecting plate 15 and a power mechanism for driving the adjusting plate 16 to move are provided on the connecting plate 15. A sliding cavity extending along the width direction of the connecting plate 15 and open toward one side of the end face is provided at one end face of the connecting plate 15. The adjusting plate 16 is slidably arranged in the concave cavity along the width direction of the connecting plate 15. The power mechanism is located in the concave cavity and is respectively connected to the adjusting plate 16 and the inner side wall of the concave cavity. The telescopic member 17 is located below the connecting plate 15. The telescopic end of the telescopic member 17 is fixedly connected to the bottom of the connecting plate 15. The adjusting plate 16 is used to carry the beaker 2. In this embodiment, the connecting plate 15 is arranged in the horizontal direction and can be lifted and lowered in the vertical direction. The telescopic member 17 is fixedly mounted on the bottom wall of the machine body 1 by bolts. The telescopic member 17 can be any one of a cylinder, an electric telescopic rod, etc.

[0039] Three guide rods 18 are slidably penetrated on the connecting plate 15, and the guide rods 18 are vertically arranged. The bottom ends of the guide rods 18 are fixed to the bottom wall of the machine body 1. The telescopic member 17 is telescopic to drive the connecting plate 15 and the adjusting plate 16 to rise and fall in the vertical direction. The connecting plate 15 is limited by the guide rods 18, and the rise and fall is stable, so that the beaker 2 will not shake violently.

[0040] The power mechanism includes a U-shaped groove 19, a Z-shaped transmission plate, a gear 21, a transmission rod 22 and a second motor 23. There are two U-shaped grooves 19 and they are symmetrically arranged. One of the U-shaped grooves 19 is fixedly connected in the concave cavity and pressed against the inner side wall of the concave cavity. The other U-shaped groove 19 is slidably connected in the concave cavity and fixedly connected to the adjustment plate 16. There are two Z-shaped transmission plates and they are slidably arranged in the U-shaped groove 19 respectively. Two gears 21 are arranged in each U-shaped groove 19. The gears 21 are respectively transmission-connected with the Z-shaped transmission plates. A transmission rod 22 is connected to each gear 21. The transmission rods 22 on the gears 21 on the same side of the two U-shaped grooves 19 are hinged. The output end of the second motor 23 is transmission-connected to a gear 21 in the U-shaped groove 19 fixedly connected to the inner side wall of the concave cavity. In this embodiment, in order to facilitate the installation of the second motor 23, the second motor 23 can be installed on the connecting plate 15. The output end of the second motor 23 passes through the side wall of the connecting plate 15 and the side wall of the U-shaped groove 19 in sequence and is transmission-connected to the gear 21.

[0041] Both ends of the Z-shaped transmission plate are respectively provided with tooth grooves, and the gears 21 are respectively meshed with the tooth grooves of the Z-shaped transmission plate for transmission.

[0042] A control panel 24 is disposed on the surface of the machine body 1 , and the first motor 28 , the second motor 23 , and the telescopic member 17 are all electrically connected to the control panel 24 .

[0043] In the above embodiment, one of the gears 21 is driven to rotate by the second motor 23, and the transmission rod 22 and the Z-shaped transmission plate drive the remaining three gears 21 to rotate, so that the adjustment plate 16 can be extended and retracted along the width direction of the connecting plate 15. The control panel 24 is convenient for the staff to control the extension and retraction distance of the adjustment plate 16. By extending and retracting the adjustment plate 16, the beaker 2 can be moved away from the bottom of the stirring blade 14, so that the beaker 2 can be automatically positioned and removed.

[0044] A cylindrical connection seat 27 is fixedly provided at the bottom of the beaker 2, and a positioning groove 25 is provided on the adjustment plate 16 to be plugged into the connection seat 27. The connection seat 27 is inserted into the positioning groove 25 and is magnetically connected to the adjustment plate 16. A positioning column 26 for installing and positioning the connection seat 27 is also provided between the surfaces of the connection seat 27 and the positioning groove 25 that are magnetically attracted to each other. There are three positioning columns 26, and the three positioning columns 26 are evenly distributed on the bottom wall of the positioning groove 25. A connection groove is provided at the position corresponding to each positioning column 26 on the connection seat 27, and the positioning column 26 is plugged into the connection groove.

[0045] In this embodiment, the positioning groove 25 and the connecting seat 27 are connected by magnetic attraction and plug-in, and three positioning columns 26 are arranged in the positioning groove 25. The operator can easily complete the positioning of the beaker 2 by directly placing the beaker 2 on the positioning groove 25. The positioning is convenient and quick. When the beaker 2 needs to be removed, the beaker 2 can be easily removed by applying force in the vertical direction.

[0046] The experimental operation steps of this embodiment are as follows:

[0047] Before the test, the sealing plate of the machine body 1 is opened, and the second motor 23 is started. The second motor 23 drives a gear 21 to rotate, and the transmission rod 22 and the Z-shaped transmission plate drive the other three gears 21 to rotate. The adjustment plate 16 is extended along the width direction of the connecting plate 15 until the beaker 2 extends out of the machine body 1. The operator takes out the beaker 2, pours an equal volume of water sample into it, and adds water treatment agents of different types and concentrations respectively. Then, the second motor 23 drives the adjustment plate 16 to shrink along the width direction of the connecting plate 15 until the beaker 2 is located at the stirring blade 1. 4, and then through the extension and retraction of the telescopic member 17, the connecting plate 15, the adjusting plate 16, and the beaker 2 are driven to rise until the stirring blade 14 is inserted into the beaker 2, the sealing plate is covered, and the first motor 28 is started. The first motor 28 causes the stirring blade 14 to stir the water sample. After the test, the beaker 2 is taken out and the water sample is taken to detect the turbidity and other indicators. At the same time, the stirring blade 14 can be disassembled for cleaning to prevent the residual sewage of the stirring blade 14 from dripping into the machine body 1, and the sewage from the previous experiment attached to the stirring blade 14 affects the next experiment. The coagulation experiment mixer provided by the utility model has a clever structure, is simple to use, and is easy to operate. The beaker 2 is positioned steadily and accurately, and the beaker 2 automatically moves to the designated test position. It has a high degree of automation, and the stirring blade 14 is easy to disassemble and assemble. The device can automatically fix the beaker 2, shortening the installation time of the beaker 2 and improving the experimental efficiency and accuracy.

[0048] The above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. Although the utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model. The technology, shape, and structure that are not described in detail in the utility model are all well-known technologies.

Claims

1. A coagulation experiment mixer, comprising a body (1) having an inner cavity and a plurality of beakers (2) placed in the body (1), characterized in that: The machine body (1) is provided with a stirring mechanism, the stirring mechanism comprising a first motor (28) and a plurality of rotating shafts (3), the first motor (28) and the rotating shaft (3) being transmission-connected, a square driving block (7) being provided at the bottom of the rotating shaft (3), a stirring shaft (12) being provided on the square driving block (7), a square groove (13) being provided at the top of the stirring shaft (12), the square driving block (7) being plug-fitted with the stirring shaft (12), a locking assembly being provided between the square driving block (7) and the stirring shaft (12), and a stirring blade (14) for inserting into the beaker (2) being provided at the bottom of the stirring shaft (12); The machine body (1) is provided with a connecting plate (15) and a telescopic member (17); the connecting plate (15) is provided with an adjusting plate (16) which is slidably connected to the connecting plate (15) and can be received in the connecting plate (15), and a power mechanism for driving the adjusting plate (16) to move; an end surface of one end of the connecting plate (15) is provided with a sliding cavity which extends along the width direction of the connecting plate (15) and is open toward one side of the end surface; the adjusting plate (16) is slidably arranged in the cavity along the width direction of the connecting plate (15); the power mechanism is located in the cavity and is respectively connected to the adjusting plate (16) and the inner side wall of the cavity; the telescopic member (17) is located below the connecting plate (15); the telescopic end of the telescopic member (17) is fixedly connected to the bottom of the connecting plate (15); and the adjusting plate (16) is used to carry the beaker (2).

2. A coagulation experiment mixer according to claim 1, characterized in that: The side wall of the square drive block (7) is provided with an inwardly recessed mounting groove (11), the locking assembly is located in the mounting groove (11), and the locking assembly comprises a spherical locking pin (9) and a spring, one end of the spring is fixedly connected to the inner wall of the mounting groove (11), and the other end is fixedly connected to one end of the spherical locking pin (9), and the spherical locking pin (9) is slidably matched with the mounting groove (11).

3. A coagulation experiment mixer according to claim 2, characterized in that: The top of the stirring shaft (12) is provided with an extrusion slope in the circumferential direction of the square groove (13) for extruding the spherical locking pin (9).

4. A coagulation experiment mixer according to claim 1, characterized in that: A guide rod (18) is slidably provided on the connecting plate (15), the guide rod (18) is vertically arranged, and the bottom end of the guide rod (18) is fixed on the bottom wall of the machine body (1).

5. A coagulation experiment mixer according to claim 1, characterized in that: The power mechanism comprises a U-shaped groove (19), a Z-shaped transmission plate, a gear (21), a transmission rod (22) and a second motor (23). The U-shaped grooves (19) are two and symmetrically arranged. One of the U-shaped grooves (19) is fixedly connected in the concave cavity and abuts against the inner wall of the concave cavity. The other U-shaped groove (19) is slidably connected in the concave cavity and fixedly connected to the adjustment plate (16). The Z-shaped transmission plates are two and are slidably arranged in the U-shaped groove (19). Two gears (21) are arranged in each of the U-shaped grooves (19). The gears (21) are respectively connected to the Z-shaped transmission plates. A transmission rod (22) is connected to each of the gears (21) on the same side of the two U-shaped grooves (19) and are hinged. The output end of the second motor (23) is connected to a gear (21) in a U-shaped groove (19) fixedly connected to the inner wall of the concave cavity.

6. A coagulation experiment mixer according to claim 5, characterized in that: Tooth grooves are respectively arranged at both ends of the Z-shaped transmission plate, and the gears (21) are respectively meshed with the tooth grooves of the Z-shaped transmission plate for transmission.

7. A coagulation experiment mixer according to claim 5, characterized in that: A control panel (24) is provided on the surface of the machine body (1), and the first motor (28), the second motor (23) and the telescopic member (17) are all electrically connected to the control panel (24).

8. The coagulation experiment mixer according to claim 1, characterized in that: The bottom of the beaker (2) is provided with a cylindrical connecting seat (27), the adjusting plate (16) is provided with a positioning groove (25) which is plugged into and matched with the connecting seat (27), and the connecting seat (27) is inserted into the positioning groove (25) and is magnetically connected to the adjusting plate (16).

9. A coagulation experiment mixer according to claim 8, characterized in that: A positioning column (26) for installing and positioning the connecting seat (27) is also provided between the mutually magnetically attracted surfaces of the connecting seat (27) and the positioning groove (25). There are a plurality of positioning columns (26), and the plurality of positioning columns (26) are evenly distributed on the bottom wall of the positioning groove (25). A connecting groove is provided at a position corresponding to each positioning column (26) on the connecting seat (27), and the positioning column (26) is plugged into and matched with the connecting groove.

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