Magnetic stirrer with efficient stirring function

Abstract

The utility model discloses a magnetic stirrer with an efficient stirring function, which comprises a stirring barrel, a liquid inlet valve fixedly connected to one end of the upper part of the stirring barrel, a liquid discharge valve fixedly connected to one end of the lower part of the stirring barrel, a supporting column fixedly connected to the other end of the lower part of the stirring barrel, and a bottom plate fixedly connected to the lower part of the supporting column, a magnetic transmission mechanism is fixedly connected to the middle position above the stirring barrel, a rotating rod is movably inserted into the inner side of the stirring barrel, a stirring mechanism is fixedly clamped to the surface of the rotating rod, and a fixing mechanism is fixedly arranged at the other end above the bottom plate; the radial extension range of the stirring blades can be dynamically adjusted through linkage extension of the hydraulic telescopic rod and the folding rod in the stirring mechanism, and the attack angle and the coverage area of the stirring blades in fluids with different viscosities can be automatically adjusted in combination with real-time feedback control of the adjusting sensor on the pitch angle of the stirring blades, so that the mixing efficiency is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of magnetic stirrer technology, specifically a magnetic stirrer with high-efficiency stirring function. Background Technology

[0002] A magnetic stirrer is a mixing device that achieves non-contact power transmission through the principle of magnetic field coupling. It is widely used in liquid mixing, reaction and dispersion processes in laboratories and industrial fields such as chemical, pharmaceutical and food industries. Its core structure usually consists of a drive motor, an outer magnetic rotor, an inner magnetic rotor and a stirring paddle. The motor power is transmitted to the stirring paddle in the sealed container through the magnetic coupling of the inner and outer magnets, avoiding the leakage risk of traditional mechanical shaft seals. It is especially suitable for the treatment of toxic, flammable or high-cleanliness media.

[0003] According to patent application publication number CN112246157A, a magnetic stirrer is disclosed. This device rotates a handwheel, causing a lead screw to rotate within the connecting block. This causes a fixed plate to slide on the outer surface of two sets of connecting columns according to the rotation of the lead screw, moving the fixed rod and causing the adjusting rod to move along with the magnetic block. This brings the magnetic block and the repulsive block to the same horizontal plane. By energizing the magnetic block and the repulsive block on the control panel, a magnetic field is formed between the magnetic block and the repulsive block, causing the magnetic blocks and the repulsive blocks to repel each other due to their similar poles. This makes the cylinder stable and improves the stability of the cylinder, thus improving the stirring quality of the liquid.

[0004] However, the stirring blades of this device adopt a fixed structure design, which makes it impossible to dynamically adjust the blade extension range, radial coverage area and tilt angle according to the material viscosity, fluid resistance or mixing stage requirements. As a result, when facing high viscosity fluids or complex media containing solid particles, it is prone to problems such as insufficient local shear force, uneven mixing or dead zone residue during the stirring process. Utility Model Content

[0005] The purpose of this invention is to provide a magnetic stirrer with efficient stirring function in order to solve the problems mentioned in the background.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a magnetic stirrer with high-efficiency stirring function, comprising: a stirring tank, an inlet valve fixedly connected to one upper end of the stirring tank, a drain valve fixedly connected to one lower end of the stirring tank, a support column fixedly connected to the other lower end of the stirring tank, a base plate fixedly connected below the support column, a magnetic transmission mechanism fixedly connected to the middle position of the upper part of the stirring tank, a rotating rod movably inserted into the inner side of the stirring tank, a stirring mechanism fixedly snapped onto the surface of the rotating rod, and a fixing mechanism fixedly provided at the other upper end of the base plate;

[0007] The stirring mechanism includes a retaining ring fixedly engaged with the surface of the rotating rod. A pushing device is fixedly engaged with the side of the retaining ring. A hydraulic telescopic rod is fixedly connected to one side of the pushing device. A folding rod is rotatably connected to the other end of the pushing device. The other end of the hydraulic telescopic rod is fixedly connected to the other side of the folding rod. A movable seat is rotatably connected to the side of the folding rod. A stirring blade is fixedly connected to the outside of the movable seat. An adjustment sensor is fixedly installed on the inside of the movable seat.

[0008] As a further embodiment of this utility model: the magnetic transmission mechanism includes an outer sealing cover fixedly connected to the top of the mixing tank, a drive motor fixedly connected above the outer sealing cover, an outer magnetic steel cover rotatably connected below the drive motor, an inner sealing cover sleeved inside the outer magnetic steel cover, an inner magnetic steel column sleeved inside the inner sealing cover, a rotating rod fixedly connected below the inner magnetic steel column, and sealing rings fixedly provided below both the outer and inner sealing covers. A sealing ring groove is formed on the upper surface of the mixing tank.

[0009] As a further embodiment of this utility model: the fixing mechanism includes an electric base fixedly disposed at the other end above the base plate, an electric telescopic rod rotatably connected above the electric base, and a clamping plate fixedly connected to one side above the electric telescopic rod.

[0010] As a further embodiment of this utility model: multiple sets of the stirring mechanism are fixedly snapped onto the surface of the rotating rod; multiple sets of the fixing mechanism are arranged around the top of the base plate; the pushing device drives the hydraulic telescopic rod to fold and extend the folding rod; the folding rod is used to adjust the distance between the stirring blade and the rotating rod by folding and extending; the adjusting sensor is used to control the up and down rotation angle of the movable seat; and the movable seat drives the stirring blade to adjust the up and down angle.

[0011] As a further embodiment of this utility model: the drive shaft of the drive motor passes through the top of the outer sealing cover and is rotatably connected to the outer magnet cover. The outer magnet cover is located inside the outer sealing cover, the inner sealing cover is located inside the outer magnet cover, and the inner magnet column is located inside the inner sealing cover. There are gaps between the outer sealing cover, the outer magnet cover, the inner sealing cover, and the inner magnet column. The outer sealing cover and the inner sealing cover are both fixedly connected to the top of the mixing tank by bolts. The size of the sealing ring matches the size of the sealing ring groove.

[0012] As a further embodiment of this utility model: an electromagnet is fixedly provided on the front side of the clamping plate for adsorption on the outer wall of the mixing tank, and a power transmission line is fixedly connected to the back side of the clamping plate, with the other end of the power transmission line fixedly connected to the electric base.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In this invention, the radial extension range of the stirring blades can be dynamically adjusted by the linkage of the hydraulic telescopic rod and the folding rod in the stirring mechanism. Combined with the real-time feedback control of the pitch angle of the stirring blades by the adjustment sensor, the stirring blades can automatically adjust the angle of attack and coverage area in fluids of different viscosities, which significantly improves the mixing efficiency.

[0015] The magnetic coupling transmission between the drive motor and the outer magnetic steel cover and the inner magnetic steel column realizes non-contact power transmission, avoiding the leakage risk of traditional mechanical seals. At the same time, the double sealing ring and sealing ring groove design of the outer and inner sealing covers further isolates the material from the transmission components, ensuring the high cleanliness of the stirring process.

[0016] The fixing mechanism uses an electric telescopic rod to drive the clamping plate to electromagnetically adhere to the outer wall of the mixing tank, effectively counteracting the centrifugal force generated by the stirring blades under high-speed rotation and the tank vibration caused by fluid eddies, thus ensuring operational stability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a magnetic stirrer with high-efficiency stirring function as described in this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the mixing tank in a magnetic stirrer with high-efficiency stirring function as described in this utility model;

[0019] Figure 3 This is a schematic diagram of the stirring mechanism in a magnetic stirrer with high-efficiency stirring function as described in this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of a single adjustable stirring paddle in a magnetic stirrer with high-efficiency stirring function as described in this utility model;

[0021] Figure 5 This is a structural breakdown diagram of the magnetic transmission mechanism in a magnetic stirrer with high-efficiency stirring function as described in this utility model;

[0022] Figure 6 This is a schematic diagram of the internal structure of the magnetic transmission mechanism in a magnetic stirrer with high-efficiency stirring function as described in this utility model;

[0023] Figure 7 This is a schematic diagram of the dual magnets in the magnetic drive mechanism of the magnetic stirrer with high-efficiency stirring function described in this utility model;

[0024] Figure 8This is a schematic diagram of the sealing ring groove in a magnetic stirrer with high-efficiency stirring function as described in this utility model.

[0025] In the diagram: 1. Mixing tank; 2. Inlet valve; 3. Drain valve; 4. Support column; 5. Base plate; 6. Magnetic transmission mechanism; 7. Rotating rod; 8. Mixing mechanism; 9. Fixing mechanism; 61. Drive motor; 62. Outer sealing cover; 63. Outer magnetic steel cover; 64. Inner sealing cover; 65. Inner magnetic steel column; 66. Sealing ring; 67. Sealing ring groove; 81. Snap ring; 82. Pushing device; 83. Hydraulic telescopic rod; 84. Folding rod; 85. Movable seat; 86. Mixing blade; 87. Adjustment sensor; 91. Electric base; 92. Electric telescopic rod; 93. Clamping plate. Detailed Implementation

[0026] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figures 1 to 8 In this embodiment of the present invention, a magnetic stirrer with high-efficiency stirring function includes: a stirring tank 1, which is a cylindrical corrosion-resistant container with an inlet valve 2 welded to one side of the top and a drain valve 3 welded to one side of the bottom for controlling the inflow and outflow of materials; the bottom of the stirring tank 1 is fixedly connected to the bottom plate 5 by four support columns 4 to form a stable support; a magnetic transmission mechanism 6 is fixedly installed at the center of the top of the stirring tank 1 by bolts, which includes a double-layer sealing structure formed by an outer sealing cover 62 and an inner sealing cover 64; a drive motor 61 is fixed at the top of the outer sealing cover 62, and its drive shaft passes through the outer sealing cover 62 and is connected to an outer magnetic steel cover 63; the inner sealing cover 64 is nested inside the outer magnetic steel cover 63, with an annular gap between them; an inner magnetic steel column 65 is sleeved inside the inner sealing cover 64; the inner magnetic steel column 65 and the outer magnetic steel cover 63 achieve non-contact transmission through magnetic coupling; the bottom of the inner magnetic steel column 65 is welded and fixed to a rotating rod 7; the rotating rod 7 is vertically inserted into the interior of the stirring tank 1, and multiple sets of stirring mechanisms 8 are fixed to its surface by retaining rings 81.

[0028] In each stirring mechanism 8, a retaining ring 81 is fitted onto the surface of the rotating rod 7 and locked with bolts. The pushing device 82 on the side of the retaining ring 81 is a hydraulic drive unit. One end of the device is fixedly connected to the cylinder of the hydraulic telescopic rod 83, and the other end is rotatably connected to the hinge point of the folding rod 84. The piston rod end of the hydraulic telescopic rod 83 is hinged to the other side of the folding rod 84. The extension and retraction of the hydraulic telescopic rod 83 drives the folding rod 84 to unfold or retract, thereby driving the movable seat 85 to move radially and adjusting the distance between the stirring blade 86 and the rotating rod 7. An adjustment sensor 87 is embedded inside the movable seat 85. It controls the stroke of the hydraulic telescopic rod 83 and the rotation angle of the movable seat 85 by detecting the fluid resistance signal, so as to dynamically adjust the tilt angle of the stirring blade 86.

[0029] Four sets of fixing mechanisms 9 are arranged around the mixing tank 1 on the base plate 5. Each set includes an electric base 91 and an electric telescopic rod 92 on its top. The electric telescopic rod 92 is connected to the clamping plate 93 through a hinge seat. An electromagnet is embedded in the front of the clamping plate 93. When energized, it is attracted to the outer wall of the mixing tank 1. Its back is connected to the power module of the electric base 91 through a flexible transmission line. During operation, the electric telescopic rod 92 automatically rises and falls according to the vibration amplitude of the mixing tank 1, so that the clamping plate 93 is tightly attached to the tank wall and the vibration is suppressed.

[0030] The sealing of the magnetic transmission mechanism 6 is achieved through the sealing rings 66 at the bottom of the outer sealing cover 62 and the inner sealing cover 64. The sealing rings 66 are embedded in the sealing ring grooves 67 at the top of the mixing tank 1, forming a double sealing barrier to prevent materials from seeping into the transmission area. After the drive motor 61 starts, the outer magnetic steel cover 63 rotates and drives the inner magnetic steel column 65 to rotate synchronously through magnetic force, driving the rotating rod 7 and the stirring mechanism 8 to stir the materials. During the stirring process, the adjusting sensor 87 adjusts the extension distance and tilt angle of the stirring blades 86 in real time according to the fluid viscosity. Combined with the dynamic clamping of the fixing mechanism 9, efficient mixing and operational stability are ensured.

[0031] The working principle of this utility model is as follows:

[0032] When the drive motor 61 starts, its output shaft drives the outer magnetic steel cover 63 to rotate. Since the outer magnetic steel cover 63 and the inner magnetic steel column 65 form a non-contact transmission through magnetic coupling, the inner magnetic steel column 65 rotates synchronously under magnetic drive, thereby driving the rotating rod 7 to rotate inside the mixing tank 1. Multiple sets of stirring mechanisms 8 distributed on the surface of the rotating rod 7 rotate synchronously accordingly. The retaining ring 81 serves as a fixed base. The pushing device 82 drives the folding rod 84 to fold by controlling the extension and retraction of the hydraulic telescopic rod 83, thereby changing the radial distance between the movable seat 85 and the rotating rod 7, realizing the expansion or contraction of the stirring blades 86. The adjusting sensor 87 detects the fluid resistance and viscosity parameters during the stirring process in real time, and transmits feedback signals. The system automatically adjusts the stroke of the hydraulic telescopic rod 83 and controls the pitch angle of the movable seat 85 by adjusting the sensor 87, optimizing the angle of attack of the stirring blade 86 to adapt to different working conditions. At the same time, the electric base 91 drives the electric telescopic rod 92 to rise and fall, causing the clamping plate 93 to adhere to the outer wall of the mixing tank 1 and form multi-point fixation through electromagnetic adsorption, effectively suppressing the vibration of the tank during the mixing process. During operation, the outer sealing cover 62 and the inner sealing cover 64 form a double isolation barrier through the cooperation of the sealing ring 66 and the sealing ring groove 67, ensuring the sealing of the magnetic transmission mechanism 6. The inlet valve 2 and the outlet valve 3 control the input and output processes of materials, respectively. The entire system achieves efficient mixing through multi-dimensional dynamic adjustment.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A magnetic stirrer with high-efficiency stirring function, characterized in that, include: A mixing tank (1) is provided with an inlet valve (2) fixedly connected to one upper end of the mixing tank (1), a drain valve (3) fixedly connected to one lower end of the mixing tank (1), a support column (4) fixedly connected to the other lower end of the mixing tank (1), a base plate (5) fixedly connected to the lower end of the support column (4), a magnetic transmission mechanism (6) fixedly connected to the middle position above the mixing tank (1), a rotating rod (7) movably inserted into the inner side of the mixing tank (1), a stirring mechanism (8) fixedly snapped onto the surface of the rotating rod (7), and a fixing mechanism (9) fixedly installed at the other upper end of the base plate (5). The stirring mechanism (8) includes a retaining ring (81) fixedly engaged with the surface of the rotating rod (7). A pushing device (82) is fixedly engaged with the side of the retaining ring (81). A hydraulic telescopic rod (83) is fixedly connected to one side of the pushing device (82). A folding rod (84) is rotatably connected to the other end of the side of the pushing device (82). The other end of the hydraulic telescopic rod (83) is fixedly connected to the other side of the folding rod (84). A movable seat (85) is rotatably connected to the side of the folding rod (84). A stirring blade (86) is fixedly connected to the outside of the movable seat (85). An adjustment sensor (87) is fixedly installed on the inside of the movable seat (85).

2. A magnetic stirrer with high-efficiency stirring function according to claim 1, characterized in that, The magnetic transmission mechanism (6) includes an outer sealing cover (62) fixedly connected above the mixing tank (1), a drive motor (61) fixedly connected above the outer sealing cover (62), an outer magnetic steel cover (63) rotatably connected below the drive motor (61), an inner sealing cover (64) sleeved inside the outer magnetic steel cover (63), an inner magnetic steel column (65) sleeved inside the inner sealing cover (64), a rotating rod (7) fixedly connected below the inner magnetic steel column (65), a sealing ring (66) fixedly provided below both the outer sealing cover (62) and the inner sealing cover (64), and a sealing ring groove (67) opened on the upper surface of the mixing tank (1).

3. A magnetic stirrer with high-efficiency stirring function according to claim 1, characterized in that, The fixing mechanism (9) includes an electric base (91) fixedly installed at the other end above the base plate (5), an electric telescopic rod (92) rotatably connected above the electric base (91), and a clamping plate (93) fixedly connected to one side above the electric telescopic rod (92).

4. A magnetic stirrer with high-efficiency stirring function according to claim 1, characterized in that, The rotating rod (7) is fixedly snapped with multiple sets of the stirring mechanism (8), and multiple sets of the fixing mechanism (9) are arranged around the top of the base plate (5). The pushing device (82) drives the hydraulic telescopic rod (83) to fold and extend the folding rod (84). The folding rod (84) is used to adjust the distance between the stirring blade (86) and the rotating rod (7) by folding and extending. The adjustment sensor (87) is used to control the up and down rotation angle of the movable seat (85). The movable seat (85) drives the stirring blade (86) to adjust the up and down angle.

5. A magnetic stirrer with high-efficiency stirring function according to claim 2, characterized in that, The drive shaft of the drive motor (61) passes through the top of the outer sealing cover (62) and is rotatably connected to the outer magnet cover (63). The outer magnet cover (63) is located inside the outer sealing cover (62), the inner sealing cover (64) is located inside the outer magnet cover (63), and the inner magnet column (65) is located inside the inner sealing cover (64). There are gaps between the outer sealing cover (62), the outer magnet cover (63), the inner sealing cover (64), and the inner magnet column (65). The outer sealing cover (62) and the inner sealing cover (64) are both fixedly connected to the top of the mixing tank (1) by bolts. The size of the sealing ring (66) matches the size of the sealing ring groove (67).

6. A magnetic stirrer with high-efficiency stirring function according to claim 3, characterized in that, An electromagnet is fixedly installed on the front of the clamping plate (93) for adsorption on the outer wall of the mixing tank (1), and a power transmission line is fixedly connected to the back of the clamping plate (93), with the other end of the power transmission line fixedly connected to the electric base (91).

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