Stirring rod capable of synchronously adjusting stirring length and stirring diameter

Abstract

The utility model provides a stirring rod capable of synchronously adjusting the stirring length and the stirring diameter, which relates to the technical field of mixing and dispersing devices and ore sedimentation tests, and comprises a stirring rod, a sleeve, stirring blades, mixing blades and an adjusting system, the adjusting system is used for synchronously adjusting the telescopic length of the stirring rod and the stirring diameter of the stirring blade. Through the integrated structural design of the stirring blades, the mixing blades and the scrapers, the radial disturbance function and the axial disturbance function are combined together, the disturbance effect is further enhanced through the scrapers, and the technical defects that a conventional stirring rod is small in disturbance action area and poor in disturbance effect are overcome. Through the integrated structural design of the sleeve, the adjusting system, the stirring rod and the stirring blade, the telescopic length of the stirring rod and the stirring diameter of the stirring blade can be synchronously adjusted based on mutual matching of the movable arm and the limiting part in the adjusting system, so that the device can be suitable for measuring cylinders of different specifications, and the application range is expanded.

Description

Technical Field

[0001] The utility model relates to the technical fields of a mixing and dispersing device and an ore sedimentation test, and particularly relates to a stirring rod for synchronously adjusting the stirring length and the stirring diameter. Background Art

[0002] For the sedimentation test of an ore sample, it is necessary to fully mix the ore sample in a liquid, let it fall naturally, then measure the height of the clarification zone, and mark the time of the sedimentation process.

[0003] The test tool for this sedimentation test generally uses a glass graduated cylinder. The ore sample and water are added and fully mixed and then allowed to settle naturally. Therefore, it is necessary to fully disturb the ore sample. However, there is no special disturbing device at present. In the prior art, a glass rod is generally used for operation, but due to the small acting area of the conventional glass rod, the disturbing effect is not good. And for graduated cylinders of different specifications, stirring rods of different sizes need to be selected. Or an automatic stirring paddle is used, but due to the slender and tall shape of the glass graduated cylinder, the operation of the automatic stirring paddle is too complicated and it is not applicable to the heights of different models of glass graduated cylinders.

[0004] In view of this, it is necessary to design an improved stirring rod for synchronously adjusting the stirring length and the stirring diameter to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a stirring rod for synchronously adjusting the stirring length and the stirring diameter to improve the technical defects of the conventional stirring rod, such as small disturbing acting area, narrow adaptability, poor disturbing effect, and inability to be applicable to the heights of different models of glass graduated cylinders.

[0006] To achieve the above-mentioned utility model purpose, the utility model provides a stirring rod for synchronously adjusting the stirring length and the stirring diameter, which comprises a stirring rod, a sleeve, stirring blades and an adjusting system;

[0007] The stirring rod is a hollow rod penetrating through the inside of the sleeve;

[0008] The adjusting system includes a movable arm rotatably connected to the sleeve, a limiting part arranged on the stirring rod and vertically slidably connected to the sleeve, and a sleeve fixing ring for limiting the end of the movable arm;

[0009] The limiting part is connected to the movable arm; the limiting part drives the movable arm to rotate by vertically sliding up and down and limits the movable arm; based on the mutual cooperation of the movable arm and the limiting part, the telescopic length of the stirring rod and the stirring diameter of the stirring blades are synchronously adjusted;

[0010] The stirring blade is movably connected to the movable arm; as the movable arm rotates, the stirring diameter of the stirring blade increases or decreases in the horizontal direction.

[0011] As a further improvement of the present invention, the stirring rod for synchronously adjusting the stirring length and the stirring diameter further includes a mixing blade; the mixing blade is arranged at the bottom of the sleeve; the disturbance directions of the stirring blade and the mixing blade are perpendicular to each other;

[0012] During the working process, the stirring blade and the mixing blade are disturbed synchronously or asynchronously.

[0013] As a further improvement of the present invention, during the working process, the stirring blade performs disturbance in the radial direction of the stirring rod, and the mixing blade performs disturbance in the axial direction of the stirring rod;

[0014] The stirring blade is arranged parallel to the stirring rod and includes rubber blades symmetrically arranged on the left and right, first ore-discharging holes arranged on the rubber blades, and hard blades movably connected to the movable arm; the rubber blades are fixedly connected to the hard blades.

[0015] As a further improvement of the present invention, the mixing blade is arranged perpendicular to the stirring rod; second ore-discharging holes are arranged on the mixing blade; the first ore-discharging holes and the second ore-discharging holes are rectangular holes or circular holes, and the area of each does not exceed 60% of the area of the blade.

[0016] As a further improvement of the present invention, the stirring rod for synchronously adjusting the stirring length and the stirring diameter further includes a scraping blade arranged below the mixing blade; the scraping blade is composed of m groups of square blades axially arranged in sequence along the center line of the mixing blade, where m is 4 to 6; the disturbance direction of the scraping blade is the same as that of the stirring blade.

[0017] As a further improvement of the present invention, the limiting part includes an upper limiting ring and a lower limiting ring respectively arranged on the stirring rod; upper slotted grooves and lower slotted grooves are arranged on the sleeve for the upper limiting ring and the lower limiting ring to slide up and down.

[0018] As a further improvement of the present invention, the movable arm includes an upper movable arm slidably connected to the upper limiting ring and a lower movable arm rotatably connected to the lower limiting ring.

[0019] As a further improvement of the present invention, the upper limiting ring includes a left limiting ring and a right limiting ring symmetrically arranged on the left and right, which are respectively slidably connected to the symmetrically arranged upper movable arms; sliding grooves for the upper limiting ring to slide are arranged on the upper movable arms;

[0020] The symmetrically arranged lower movable arms share a lower limiting ring.

[0021] As a further improvement of the present utility model, a blade groove slidably connected to the upper movable arm and a blade fixing ring rotatably connected to the lower movable arm are provided on the hard blade.

[0022] As a further improvement of the present utility model, the stirring rod for synchronously adjusting the stirring length and the stirring diameter further includes a fixing nut provided on the sleeve for fixing the stirring rod.

[0023] As a further improvement of the present utility model, the mixing blade is made of rubber material and is not easy to damage the glass material measuring cylinder.

[0024] The beneficial effects of the present utility model are as follows:

[0025] 1. The stirring rod for synchronously adjusting the stirring length and the stirring diameter provided by the present utility model combines the radial disturbance function and the axial disturbance function through the integrated structure design of the stirring blade, the mixing blade and the scraping blade, and further strengthens the disturbance effect through the scraping blade, overcoming the technical defects of small disturbance area and poor disturbance effect existing in the conventional stirring rod.

[0026] 2. The stirring rod for synchronously adjusting the stirring length and the stirring diameter provided by the present utility model is provided with ore discharging hole structures on both the stirring blade and the mixing blade, which can fully disturb and mix the ore samples and break up the flocs between the ore samples. The stirring rod has a simple design, low cost, convenient use, and good disturbance and sample mixing effect.

[0027] 3. The stirring rod for synchronously adjusting the stirring length and the stirring diameter provided by the present utility model, through the integrated structure design of the sleeve, the adjusting system, the stirring rod and the stirring blade, based on the mutual cooperation of the movable arm and the limiting part in the adjusting system, synchronously adjusts the telescopic length of the stirring rod and the stirring diameter of the stirring blade. Therefore, it can be applied to measuring cylinders of different specifications, expanding the application range. Description of the Drawings

[0028] Figure 1 It is a schematic diagram of the overall structure of the stirring rod for synchronously adjusting the stirring length and the stirring diameter provided by the present utility model.

[0029] Figure 2 It is a schematic side view structure diagram of the stirring rod and the sleeve provided by the present utility model.

[0030] Figure 3 It is a schematic diagram of the structure of the adjusting system provided by the present utility model.

[0031] Figure 4 It is a schematic diagram of the structure of the stirring blade provided by the present utility model.

[0032] Figure 5 Structural schematic diagram of the mixing blade provided by the present utility model.

[0033] Reference numerals

[0034] 1. Handle; 2. Stirring rod; 3. Fixed nut; 4. Sleeve; 41. Fixed ring; 42. Upper slotted groove; 43. Lower slotted groove; 5. Stirring blade; 51. Rubber blade; 52. First ore discharging hole; 53. Blade groove; 54. Blade fixing ring; 55. Hard blade; 6. Mixing blade; 61. Second ore discharging hole; 62. Scraping blade; 7. Adjusting system; 71. Sleeve fixing ring; 72. Upper limit ring; 73. Upper movable arm; 74. Lower limit ring; 75. Lower movable arm. Specific embodiments

[0035] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Here, it should also be noted that in order to avoid obscuring the present utility model due to unnecessary details, only the structures and / or processing steps closely related to the solution of the present utility model are shown in the drawings, while other details less related to the present utility model are omitted.

[0037] In addition, it should also be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0038] Please refer to Figures 1 to 3 As shown, the present utility model provides a stirring rod for synchronously adjusting the stirring length and stirring diameter, which includes a handle 1, a stirring rod 2, a sleeve 4, a stirring blade 5, a mixing blade 6 and an adjusting system 7.

[0039] The stirring rod 2 is disposed through the hollow rod inside the sleeve 4;

[0040] The adjusting system 7 includes a movable arm rotatably connected to the sleeve 4, a limiting portion disposed on the stirring rod 2 and vertically slidably connected to the sleeve 4, and a sleeve fixing ring 71;

[0041] The limiting portion is connected to the movable arm and is used for limiting the movable arm; based on the mutual cooperation of the movable arm and the limiting portion, the telescopic length of the stirring rod 2 and the stirring diameter of the stirring blade 5 are synchronously adjusted;

[0042] The stirring blade 5 is movably connected to the movable arm; as the movable arm rotates, the stirring diameter of the stirring blade 5 increases or decreases in the horizontal direction.

[0043] The mixing blade 6 is arranged at the bottom of the sleeve 4; the disturbing directions of the stirring blade 5 and the mixing blade 6 are arranged perpendicular to each other;

[0044] During the working process, the stirring blade 5 and the mixing blade 6 disturb synchronously or asynchronously.

[0045] Please refer to Figure 1 As shown, the top of the stirring rod 2 is fixedly connected to the handle 1, which is a telescopic adjustable structure with adjustable length to adapt to the height of containers (measuring cylinders) of different models, and the length is greater than the height of the container (measuring cylinder).

[0046] Please refer to Figure 1 and Figure 4 As shown, during the working process, the stirring blade 5 performs disturbance in the radial direction of the stirring rod 2, and the mixing blade 6 performs disturbance in the axial direction of the stirring rod 2;

[0047] The stirring blade 5 is arranged parallel to the stirring rod 2, including rubber blades 51 symmetrically arranged on the left and right, first ore-discharging holes 52 arranged on the rubber blades 51, and hard blades 55 movably connected to the movable arm; the rubber blades 51 are fixedly connected to the hard blades 55.

[0048] The hard blade 55 is provided with a blade groove 53 slidably connected to the upper movable arm 73 and a blade fixing ring 54 rotatably connected to the lower movable arm 75.

[0049] The first ore-discharging hole 52 is a rectangular hole or a circular hole, and the area does not exceed 60% of the blade area.

[0050] Please refer to Figure 1 and Figure 5 As shown, the mixing blade 6 is arranged perpendicular to the stirring rod 2; the mixing blade 6 is provided with a second ore-discharging hole 61. The second ore-discharging hole 61 is a rectangular hole or a circular hole, and the area does not exceed 60% of the blade area.

[0051] The technical function of the first ore-discharging hole 52 and the second ore-discharging hole 61 is to break up the flocs. The flocs are agglomerates of mineral particles. The purpose of sufficient mixing is to disperse these flocs in water and separate them naturally. The flocs are naturally bonded when the solid mineral sample enters the measuring cylinder, so they need to be opened and mixed.

[0052] When the stirring rod rotates alone, the stirring blade 5 performs disturbance in the radial direction (horizontal direction) of the stirring rod 2.

[0053] When the stirring rod moves up and down alone, the mixing blade 6 causes disturbance in the axial direction (vertical direction) of the stirring rod 2.

[0054] When the stirring rod rotates and moves up and down simultaneously, the stirring blade 5 causes disturbance in the radial direction (horizontal direction) of the stirring rod 2, and at the same time, the mixing blade 6 causes disturbance in the axial direction (vertical direction) of the stirring rod 2.

[0055] The distance between the mixing blade 6 and the stirring blade 5 is set to be 0.5 - 5.0 cm, which can enhance the sample flow effect. The spacing should not be too large to avoid affecting the sample disturbance.

[0056] The radial dimensions of the stirring blade 5 and the mixing blade 6 should not exceed the diameter of the container (measuring cylinder).

[0057] Both the mixing blade 6 and the stirring blade 5 are made of rubber material, which is not easy to damage the glass measuring cylinder.

[0058] Please refer to Figure 1 and Figure 5 As shown, the stirring rod for synchronously adjusting the stirring length and the stirring diameter further includes a scraping blade 62 disposed below the mixing blade 6; the scraping blade 62 is composed of m groups of square blades arranged axially in sequence along the center line of the mixing blade 6, where m is 4 - 6; the disturbance direction of the scraping blade 62 is set to be the same as that of the stirring blade 5, both being radial (horizontal direction) disturbance. Moreover, the areas of the two outermost square blades are larger than those of the other square blades.

[0059] During the working process, the stirring blade 5 and the scraping blade 62 perform synchronous disturbance. That is, when the stirring rod rotates, the stirring blade 5 and the scraping blade 62 respectively perform synchronous radial disturbance in water layers at different heights.

[0060] The sleeve 4 has a hollow internal structure, is sleeved outside the stirring rod 2, and is fixed to the stirring rod 2 through a fixing nut 3.

[0061] Please refer to Figures 1 to 3 As shown, the adjusting system 7 can synchronously adjust the telescopic length of the stirring rod 2 and the stirring diameter of the stirring blade 5.

[0062] Specifically, the limiting part includes an upper limiting ring 72 and a lower limiting ring 74 respectively disposed on the stirring rod 2; upper slotted grooves 42 and lower slotted grooves 43 are provided on the sleeve 4 for accommodating the upper limiting ring 72 and the lower limiting ring 74 and allowing the upper limiting ring 72 and the lower limiting ring 74 to slide up and down.

[0063] The movable arm includes an upper movable arm 73 slidably connected to the upper limit ring 72 and a lower movable arm 75 rotatably connected to the lower limit ring 74.

[0064] Please refer to Figure 1 and Figure 3 As shown, the upper limit ring 72 includes a left limit ring and a right limit ring symmetrically arranged on the left and right, which are respectively slidably connected to the symmetrically arranged upper movable arms 73 and limit the rotation angle of the upper movable arms 73; a sliding groove for the upper limit ring 72 to slide is provided on the upper movable arm 73.

[0065] The symmetrically arranged lower movable arms 75 share a lower limit ring 74.

[0066] In some specific embodiments, the top end of the upper movable arm 73 is rotatably connected to a fixing ring 41 provided on the outer wall of the sleeve 4 through a sleeve fixing ring 71 to limit the top end of the upper movable arm 73. The bottom end of the upper movable arm 73 is slidably connected to a blade groove 53 on the rigid blade 55. And the sliding groove on the upper movable arm 73 is slidably connected to the upper limit ring 72. The upper limit ring 72 is arranged below the sleeve fixing ring 71. With such a setting, when the stirring rod 2 makes a vertical telescopic movement relative to the sleeve 4, the upper limit ring 72 slides up and down, driving the upper movable arm 73 to rotate relative to the sleeve fixing ring 71, and further driving the opening size of the rigid blade 55 (i.e., the stirring diameter).

[0067] The top end of the lower movable arm 75 is rotatably connected to a blade fixing ring 54 on the rigid blade 55, and the bottom end is rotatably connected to the lower limit ring 74. With such a setting, when the stirring rod 2 makes a vertical telescopic movement relative to the sleeve 4, the lower limit ring 74 slides up and down, driving the lower movable arm 75 to rotate relative to the lower limit ring 74, and further driving the opening size of the rigid blade 55.

[0068] Based on the mutual cooperation of the upper movable arm 73 and the lower movable arm 75, the stirring diameter of the stirring blade 5 is increased or decreased in the horizontal direction. Based on the mutual cooperation of the upper limit ring 72 and the lower limit ring 74, the vertical telescopic movement of the stirring rod 2 is realized. Thus, the stirring rod can synchronously adjust the telescopic length of the stirring rod 2 and the stirring diameter of the stirring blade 5. The adjustment mechanism of its adjustment system 7 lies in:

[0069] The fixing nut 3 is arranged on the sleeve 4. By screwing the fixing nut 3 inwardly to make the fixing nut 3 abut against the stirring rod 2, the stirring rod 2 can be fixed based on the frictional force between the fixing nut 3 and the stirring rod 2, that is, the opening size of the stirring blade 5 is fixed.

[0070] A fixing ring 41 is provided on the sleeve 4, such that the top end of the upper movable arm 73 is sleeved on the fixing ring 41 through the sleeve fixing ring 71 and rotates around the fixing ring 41.

[0071] A lower limit ring 74 is provided on the stirring rod 2, such that the lower movable arm 75 rotates around the lower limit ring 74.

[0072] An upper slotted groove 42 and a lower slotted groove 43 are provided on the sleeve 4. The upper limit ring 72 moves vertically up and down within the upper slotted groove 42, and the lower limit ring 74 moves vertically up and down within the lower slotted groove 43.

[0073] The stirring rod 2 can perform vertical telescopic movement within the hollow rod of the sleeve 4.

[0074] The stirring blade 5 is movably limited by the upper movable arm 73 and the lower movable arm 75, and is arranged above the mixing blade 6.

[0075] A rubber blade 51 is provided on the stirring blade 5. The rubber blade 51 is connected to a hard blade 55. Blade grooves 53 are provided on the hard blade 55, and the upper movable arm 73 slides within the blade grooves 53.

[0076] When the stirring rod 2 moves upward, it drives the upper limit ring 72 and the lower limit ring 74 upward. The upper movable arm 73 rotates around the sleeve fixing ring 71 (fixing ring 41), driving the stirring blade 5 to open, and the stirring blade 5 maintains a vertical shape.

[0077] The stirring rod provided by the present utility model for synchronously adjusting the stirring length and the stirring diameter has the following specific operations and working processes:

[0078] Step 1: When mixing ore samples, first add an appropriate amount of ore samples and water into a measuring cylinder. Adjust the size of the stirring blade 5, that is, pull the stirring rod 2 upward until the stirring blade 5 abuts against the inner wall of the measuring cylinder, and lock the fixing nut 3.

[0079] Step 2: Slowly insert the stirring rod into the measuring cylinder from the top of the measuring cylinder opening.

[0080] Step 3: When the bottom scraping blade 62 of the stirring rod touches the solid ore sample, rotate the stirring rod back and forth. The stirring blade 5 performs disturbance in the radial direction (horizontal direction) of the stirring rod 2, and continue to insert downward. The mixing blade 6 performs disturbance in the axial direction (vertical direction) of the stirring rod 2.

[0081] Step 4: When the bottom scraping blade 62 of the stirring rod touches the bottom of the measuring cylinder, rotate the stirring rod back and forth more than 3 times. The stirring blade 5 and the scraping blade 62 respectively perform radial (horizontal direction) disturbance in water layers at different heights to fully disturb the bottom sample.

[0082] Step 5: Lift the stirring rod upward for more than 3 times. The mixing blade 6 performs disturbance in the axial direction (vertical direction) of the stirring rod 2, and is lifted to the top of the liquid surface to fully disturb the upper sample.

[0083] Step 6: Repeat Steps 3 to 5 for more than 3 times.

[0084] Step 7: Remove the stirring rod, clean the stirring rod, and record the sedimentation time.

[0085] In summary, the present utility model provides a stirring rod for synchronously adjusting the stirring length and the stirring diameter, which comprises a stirring rod, a sleeve, a stirring blade, a mixing blade, and an adjusting system; the stirring rod is a hollow rod penetrating through the inside of the sleeve; the adjusting system comprises a movable arm rotatably connected to the sleeve, a limiting part arranged on the stirring rod and vertically slidably connected to the sleeve, and a sleeve fixing ring; the limiting part is connected to the movable arm and is used for limiting the movable arm; based on the mutual cooperation of the movable arm and the limiting part, the telescopic length of the stirring rod and the stirring diameter of the stirring blade are synchronously adjusted; the stirring blade is movably connected to the movable arm; as the movable arm rotates, the stirring diameter of the stirring blade increases or decreases in the horizontal direction. The disturbance direction of the stirring blade is perpendicularly arranged to the disturbance direction of the mixing blade; during the working process, the stirring blade and the mixing blade perform disturbance synchronously or asynchronously. Through the integrated structural design of the stirring blade, the mixing blade, and the scraping blade, the radial disturbance function and the axial disturbance function are combined together, and the disturbance effect is further enhanced by the scraping blade, overcoming the technical defects of the conventional stirring rod, such as small disturbance area and poor disturbance effect. The stirring rod has a simple design, low cost, convenient use, and good disturbance and sample mixing effect. Through the integrated structural design of the sleeve, the adjusting system, the stirring rod, and the stirring blade, based on the mutual cooperation of the movable arm and the limiting part in the adjusting system, the telescopic length of the stirring rod and the stirring diameter of the stirring blade are synchronously adjusted. Thus, it can be applicable to measuring cylinders of different specifications, expanding the application range.

[0086] The above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present utility model.

Claims

1. A stirring rod for synchronously adjusting the stirring length and the stirring diameter, characterized in that: It includes a stirring rod, a sleeve, stirring blades and an adjustment system; The stirring rod is disposed through a hollow rod inside the sleeve; The adjustment system includes a movable arm rotatably connected to the sleeve, a limiting portion disposed on the stirring rod and vertically slidably connected to the sleeve, and a sleeve fixing ring for limiting the end of the movable arm; The limiting portion is connected to the movable arm; the limiting portion drives the movable arm to rotate by vertically sliding up and down, and synchronously adjusts the telescopic length of the stirring rod and the stirring diameter of the stirring blades; The stirring blades are movably connected to the movable arm; as the movable arm rotates, the stirring diameter of the stirring blades increases or decreases in the horizontal direction.

2. The stirring rod for synchronously adjusting the stirring length and the stirring diameter according to claim 1, wherein: The stirring rod for synchronously adjusting the stirring length and the stirring diameter further includes mixing blades; the mixing blades are disposed at the bottom of the sleeve; the disturbance directions of the stirring blades and the mixing blades are perpendicular to each other; During the working process, the stirring blades and the mixing blades are disturbed synchronously or asynchronously.

3. The stirring rod for synchronously adjusting the stirring length and the stirring diameter according to claim 2, wherein: During the working process, the stirring blades perform disturbance in the radial direction of the stirring rod, and the mixing blades perform disturbance in the axial direction of the stirring rod; The stirring blades are arranged parallel to the stirring rod, and include rubber blades symmetrically arranged left and right, first ore discharging holes arranged on the rubber blades, and hard blades movably connected to the movable arm; the rubber blades are fixedly connected to the hard blades.

4. The stirring rod for synchronously adjusting the stirring length and the stirring diameter according to claim 3, wherein: The mixing blades are arranged perpendicular to the stirring rod; second ore discharging holes are arranged on the mixing blades; the first ore discharging holes and the second ore discharging holes are rectangular holes or circular holes, and the areas of both do not exceed 60% of the blade area.

5. The stirring rod for synchronously adjusting the stirring length and the stirring diameter according to claim 2, wherein: The stirring rod for synchronously adjusting the stirring length and the stirring diameter further includes a scraping blade disposed below the mixing blades; the scraping blade is composed of m groups of square blades axially arranged in sequence along the center line of the mixing blades, where m is 4 to 6; the disturbance direction of the scraping blade is the same as that of the stirring blades.

6. The stirring rod for synchronously adjusting the stirring length and the stirring diameter according to claim 3, wherein: The limiting portion includes an upper limiting ring and a lower limiting ring respectively disposed on the stirring rod; upper slotted grooves and lower slotted grooves are provided on the sleeve for the upper limiting ring and the lower limiting ring to slide up and down.

7. The stirring rod for synchronously adjusting the stirring length and the stirring diameter according to claim 6, wherein: The movable arm includes an upper movable arm slidably connected to the upper limiting ring and a lower movable arm rotatably connected to the lower limiting ring.

8. The stirring rod for synchronously adjusting the stirring length and the stirring diameter according to claim 7, wherein: The upper limiting ring includes a left limiting ring and a right limiting ring symmetrically arranged left and right, which are respectively slidably connected to the symmetrically arranged upper movable arms; sliding grooves for the upper limiting ring to slide are provided on the upper movable arms; The symmetrically arranged lower movable arms share a lower limiting ring.

9. The stirring rod for synchronously adjusting the stirring length and the stirring diameter according to claim 7, wherein: Blade grooves slidably connected to the upper movable arm and blade fixing rings rotatably connected to the lower movable arm are provided on the hard blades.

10. The stirring rod for synchronously adjusting the stirring length and the stirring diameter according to claim 1, wherein: The stirring rod for synchronously adjusting the stirring length and the stirring diameter further includes a fixing nut disposed on the sleeve for fixing the stirring rod.

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