A small mixer

Abstract

The utility model belongs to the mixing technology equipment field especially relates to a small -size mixer. Small -size mixer includes: mixing barrel, stirring subassembly, base and the adjusting support of connecting mixing barrel, mixing barrel has the accommodation cavity, and mixing barrel is provided with the opening that communicates the accommodation cavity and sets up upwards at the opening, stirring subassembly is detachably connected mixing barrel at the opening, and the stirring end of stirring subassembly extends to the accommodation cavity through the opening, the base is fixed in the predetermined plane, the adjusting support rotatably connects the base, and can rotate the predetermined angle with the base, to adjust the included angle between the plane determined by the opening and the predetermined plane. The utility model can improve the macroscopic movement of material in the accommodation cavity, avoid the local deposition of material in the accommodation cavity, thereby enhanced the overall dispersibility of material, improved the mixing uniformity, realized the efficient dispersion of dry -process electrode mixing.

Description

Technical Field

[0001] This utility model belongs to the field of mixing technology equipment, and in particular relates to a small mixing machine. Background Technology

[0002] Mixing equipment is widely used in various industrial fields such as chemical, pharmaceutical, battery materials, and food industries to achieve uniform mixing of different powders, granules, or liquids. In the field of battery materials, especially in the manufacturing process of lithium batteries, the material mixing process has a crucial impact on the performance of the final product. For example, in the preparation of dry electrodes, active materials, conductive agents, and binders are uniformly dispersed and mixed to ensure the conductivity and consistency of the electrode.

[0003] Most existing mixing equipment is of a vertical structure, meaning that the height of the mixing tank is arranged vertically, and it is mixed with an internal stirring paddle or rotating mechanism.

[0004] However, vertically arranged mixing equipment, due to its structural and motion limitations, is prone to problems such as insufficient macroscopic movement, localized deposition or accumulation, and difficulty in dispersing agglomerates when dealing with dry powders or lightweight nanomaterials (such as carbon black and carbon nanotubes). This is especially true in dry electrode fabrication processes, where traditional mixing methods struggle to achieve uniform dispersion of fine particles such as conductive agents with the raw materials, resulting in poor mixing uniformity and ultimately affecting the electrochemical performance of the electrode sheet. Utility Model Content

[0005] The purpose of this application is to provide a small mixing machine that aims to solve the problem of how to improve the uniformity of material mixing.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] A small mixing machine is provided, comprising: a mixing tank, a stirring assembly, a base, and an adjusting bracket connected to the mixing tank. The mixing tank has a receiving cavity and an opening that communicates with the receiving cavity and faces upward. The stirring assembly is detachably connected to the mixing tank at the opening, and the stirring end of the stirring assembly extends into the receiving cavity through the opening. The base is fixed to a predetermined plane. The adjusting bracket is rotatably connected to the base and can rotate relative to the base by a predetermined angle to adjust the angle between the plane defined by the opening and the predetermined plane.

[0008] In some embodiments, the small mixer further includes a locking member, and a locking part is provided on the base; the locking member has a locked state and an unlocked state; when the locking member is in the locked state, the locking member is connected to the locking part to restrict the rotation of the adjusting bracket relative to the base; when the locking member is in the unlocked state, the locking member disengages from the locking part and releases the restriction on the rotation of the adjusting bracket.

[0009] In some embodiments, the adjusting bracket has an adapter groove, the base portion is located in the adapter groove, the two side walls of the adapter groove are rotatably connected to the two side surfaces of the base, and the locking member is connected to the groove wall of the adapter groove and rotates synchronously with the adjusting bracket.

[0010] In some embodiments, the locking part includes a plurality of locking holes formed on the base, each of the locking holes being arranged along the rotation path of the locking member, and when the locking member is in the locked state, the locking member is inserted into one of the locking holes; or the locking part is a locking groove formed on the base, the locking groove being arranged along the rotation path of the locking member, and when the locking member is in the locked state, the locking member is fixed to the locking groove by a fastener.

[0011] In some embodiments, the stirring assembly includes a sealing cap that detachably covers the opening, a stirring paddle with one end rotatably connected to the sealing cap and the other end extending into the receiving cavity, and a stirring driver connected to the sealing cap and used to drive the stirring paddle, wherein the rotation centerline of the stirring paddle is at a predetermined distance from the central axis of the mixing tank.

[0012] In some embodiments, the small mixer further includes a fixed base connected to the adjusting bracket and spaced apart from the mixing tank, and one end of the sealing cover is rotatably connected to the fixed base.

[0013] In some embodiments, the small mixer further includes a support flange rotatably connected to the adjusting bracket and a mixing driver connected to the adjusting bracket and used to drive the support flange to rotate, wherein the mixing hopper is detachably connected to the support flange.

[0014] In some embodiments, the small mixer further includes a scraper, the scraper being at least partially located in the receiving cavity, and the edge of the scraper being at a predetermined distance from the cavity wall.

[0015] In some embodiments, the small mixer further includes a snap-fit ​​assembly, which includes a fastener rotatably connected to the support flange and a hook disposed on the side surface of the mixing hopper and engaging with the fastener, wherein the fastener engages the hook to detachably connect the mixing hopper to the support flange.

[0016] In some embodiments, the small mixer further includes a heating assembly, which includes a positioning cover connected to the adjusting bracket and arranged circumferentially around the mixing tank, and a heating tube arranged on the positioning cover.

[0017] The beneficial effects of this application are as follows: by adjusting the bracket to rotate and connect the base, the bracket can be rotated and adjusted relative to the base according to the actual situation, so that the height direction of the mixing barrel is tilted relative to the vertical direction, which promotes the rolling and flow of materials under the action of gravity, improves the macroscopic movement of materials in the accommodating cavity, avoids local deposition of materials in the accommodating cavity, thereby enhancing the overall dispersion of materials, improving the mixing uniformity, and realizing the efficient dispersion of dry electrode mixing. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or exemplary technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the small mixer provided in the embodiments of this application;

[0020] Figure 2 yes Figure 1 A cross-sectional view of a small mixer with the mixing drum at its maximum tilt angle.

[0021] Figure 3 yes Figure 1 An exploded diagram of a small mixing machine.

[0022] The following are the labeling elements in the figure:

[0023] 100. Small mixer; 10. Base; 11. Control panel; 111. Fixed cavity; 12. Locking part; 121. Locking hole; 20. Adjusting bracket; 21. Top plate; 22. Side plate; 23. Adapter groove; 30. Mixing bucket; 31. Receiving cavity; 32. Locking element; 40. Mixing assembly; 401. Observation window; 402. Feeding port; 311. Opening; 321. Hook; 50. Heating assembly; 51. Positioning cover; 52. Heating tube; 60. Fixed seat; 41. Sealing cover; 42. Mixing paddle; 43. Scraper; 44. Mixing driver; 45. Heat sink; 33. Support flange; 34. Mixing driver; 61. Drive cylinder; Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0025] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly or indirectly attached to that other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are for ease of description only, not to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality" means two or more, unless otherwise explicitly defined.

[0026] Please see Figures 1 to 3 This application provides a small mixer 100 for stirring and mixing materials. For example, in the preparation of dry electrodes, the small mixer 100 can uniformly mix materials such as active materials, conductive agents and binders to construct an electrode precursor with good conductivity, ion diffusion and mechanical stability.

[0027] Please see Figures 1 to 3 The small mixer 100 includes a mixing tank 30, a stirring assembly 40, a base 10, and an adjusting bracket 20 connected to the mixing tank 30. The mixing tank 30 has a receiving cavity 31, and the mixing tank 30 has an opening 311 that communicates with the receiving cavity 31 and faces upwards. It is understood that the mixing tank 30 can be made of stainless steel, such as 316L stainless steel. The inner wall of the receiving cavity 31 is mirror-polished. The bottom of the mixing tank 30 is connected to the adjusting bracket 20.

[0028] Please see Figures 1 to 3 The stirring assembly 40 is detachably connected to the mixing tank 30 at the opening 311, and the stirring end of the stirring assembly 40 extends into the receiving cavity 31 through the opening 311. The material can be put into the receiving cavity 31 through the opening 311 and stirred and mixed by the stirring assembly 40.

[0029] Please see Figures 1 to 3The base 10 is fixed to a predetermined plane, and the adjusting bracket 20 is rotatably connected to the base 10 and can rotate relative to the base 10 by a predetermined angle to adjust the angle between the plane determined by the opening 311 and the predetermined plane.

[0030] Understandably, the predetermined plane can be the upper surface of the frame, which is parallel to the horizontal plane, allowing the base 10 to be horizontally supported on the frame. Shock-absorbing pads can be installed on the base 10 to filter vibrations generated during the mixing process. An adjusting bracket 20 is connected to the top of the base 10, with a predetermined angle ranging from 0 to 30 degrees, such as 0, 10, 12, 25, or 30 degrees. When the mixing hopper 30 is arranged vertically along its height, the plane defined by the opening 311 is parallel to the upper surface of the frame. At this time, the predetermined angle is 0 degrees. The adjusting bracket 20 can be manually rotated to make the mixing hopper 30 rotate synchronously with the bracket, thereby tilting the mixing hopper 30 and improving the uniformity of the mixing.

[0031] Please see Figures 1 to 3 The small mixer 100 provided in this application embodiment is connected to the base 10 by adjusting the bracket 20. The bracket 20 can be rotated relative to the base 10 according to the actual situation, so that the height direction of the mixing barrel 30 is tilted relative to the vertical direction. This promotes the rolling and flow of materials under the action of gravity, improves the macroscopic movement of materials in the accommodating cavity 31, and avoids local deposition of materials in the accommodating cavity 31. This enhances the overall dispersion of materials, improves the mixing uniformity, and achieves efficient dispersion of dry electrode mixing.

[0032] Please see Figures 1 to 3 It is understandable that the angle, i.e. the tilt of the mixing bucket 30, can be adjusted according to the different characteristics of the material, such as viscosity and particle size, in order to improve the uniformity of material mixing.

[0033] Optionally, the shape of the opening 311 can be circular, elliptical, or polygonal. In this embodiment, the opening 311 is circular, and the diameter of the opening 311 can be in the range of 100~200mm, such as 100mm, 103.5mm, 112.8mm, 119.4mm, 127.6mm, 134.2mm, 148.7mm, 159.3mm, 173.9mm, 186.1mm, 197.8mm, or 200mm. In this embodiment, the diameter of the opening 311 is 150mm. In other embodiments, the diameter can be selected according to the actual situation, and there is no limitation here.

[0034] Please see Figures 1 to 3In some embodiments, the small mixer 100 further includes a locking member 32, and a locking part 12 is provided on the base 10; the locking member 32 has a locked state and an unlocked state. When the locking member 32 is in the locked state, the locking member 32 is connected to the locking part 12 to restrict the rotation of the adjusting bracket 20 relative to the base 10; when the locking member 32 is in the unlocked state, the locking member 32 disengages from the locking part 12 and releases the restriction on the rotation of the adjusting bracket 20.

[0035] Optionally, when locked, locking member 32 connects to locking part 12 and restricts the rotation of adjusting bracket 20, thereby allowing mixing barrel 30 to maintain its tilt. When unlocked, locking member 32 disengages from locking part 12, allowing adjusting bracket 20 to rotate relative to base 10 under manual drive. Locking member 32 provides convenient state switching and reliable rotation restriction, enhancing the operability of small mixer 100 and the precise positioning of mixing barrel 30 angle.

[0036] Please see Figures 1 to 3 In some embodiments, the adjusting bracket 20 has an adapter groove 23, the base 10 is partially located in the adapter groove 23, the two side walls of the adapter groove 23 are rotatably connected to the two side surfaces of the base 10, and the locking member 32 is connected to the groove wall of the adapter groove 23 and rotates synchronously with the adjusting bracket 20.

[0037] Optionally, the adjusting bracket 20 includes a top plate 21 and two side plates 22. The two side plates 22 are located at opposite ends of the top plate 21. The top plate 21 and the two side plates 22 together form a transition groove 23. The two side plates 22 are rotatably connected to both sides of the base 10. The mixing tank 30 is installed on the top plate 21.

[0038] Please see Figures 1 to 3 Both side plates 22 are rotatably connected to the base 10 via a pivot. The two side plates 22 rotate synchronously, and after reaching their positions, the locking member 32 connects to the locking part 12 to lock the relative position of one side plate 22 to the base 10, thereby fixing the tilt of the mixing tank 30 and ensuring a safe and reliable mixing process. In some embodiments, the locking part 12 includes multiple locking holes 121 formed on the base 10. Each locking hole 121 is arranged along the rotation path of the locking member 32. When the locking member 32 is in the locked state, it is inserted into one of the locking holes 121.

[0039] Please see Figures 1 to 3Optionally, one of the side plates 22 has a threaded hole, and the peripheral side of the locking member 32 has an external thread that matches the threaded hole. The locking member 32 is screwed into the threaded hole. After the adjusting bracket 20 is rotated to the position, the locking member 32 is rotated by external force, so that one end of the locking member 32 extends into one of the locking holes 121. At this time, the locking member 32 is in the locked state. When it is necessary to rotate the adjusting bracket 20 again, the locking member 32 is rotated in the opposite direction, so that the locking member 32 is disengaged from the current locking hole 121 and is in the unlocked state. This makes the operation of the locking member 32 simple and low-cost.

[0040] Please see Figures 1 to 3 In some embodiments, the locking part 12 is a locking groove formed on the base 10. The locking groove is arranged along the rotation path of the locking member 32. When the locking member 32 is in the locked state, the locking member 32 is fixed to the locking groove by fasteners.

[0041] Understandably, the extension path of the locking groove is arc-shaped. The base 10 has a fixed cavity 111, and the locking groove is formed in the cavity wall of the fixed cavity 111. The free end of the locking member 32 has an external thread and slides into the locking groove. The fastener is a fastening nut adapted to the locking member 32. The fastening nut is located in the fixed cavity 111 and screwed onto the locking member 32. After the locking member 32 is rotated into position, the fastening nut is tightened to lock the locking member 32. When it is necessary to rotate the adjusting bracket 20, the fastening nut is loosened to unlock the locking member 32, thereby improving the convenience of adjusting the tilt of the mixing tank 30.

[0042] Optionally, by employing a design with multiple locking holes 121 or locking slots in the locking part 12, intermittent locking adjustment or continuous locking adjustment can be achieved when the locking member 32 is inserted into the locking hole 121 or locking slot in the locked state.

[0043] Please see Figures 1 to 3 In some embodiments, the stirring assembly 40 includes a sealing cap 41 that detachably covers the opening 311, a stirring paddle 42 rotatably connected at one end to the sealing cap 41 and extending at the other end to the receiving cavity 31, and a stirring driver 44 connected to the sealing cap 41 and used to drive the stirring paddle 42. The rotation center line of the stirring paddle 42 is at a predetermined distance from the central axis of the mixing tank 30. It is understood that the cross-sectional shape of the mixing tank 30 is circular. When the predetermined distance is 0, the rotation center line of the stirring paddle 42 coincides with the central axis of the mixing tank 30, thereby placing the stirring paddle 42 at the center of the mixing tank 30.

[0044] When the predetermined distance is greater than 0, the rotation center line of the stirring paddle 42 is eccentrically arranged with the central axis of the mixing tank 30. The eccentric design enhances the vortex and shearing effect of the material, promotes the uniform dispersion of fine particles, and thus can effectively stir the material in the mixing tank 30.

[0045] Please see Figures 1 to 3 For example, when the mixing tank 30 is arranged at an angle, the stirring paddle 42 can be set slightly below the center or slightly above the center. In this embodiment, the stirring paddle 42 is set slightly above the center. In other embodiments, the choice can be made according to the actual situation, and no restrictions are imposed here.

[0046] Optionally, the stirring driver 44 can be a servo motor, the stirring paddle 42 can rotate at 5000 r / min, and a heat sink 45 is provided at the rear end of the servo motor for rapid heat dissipation.

[0047] Optionally, the sealing cover 41 is provided with a feeding port 402 and an observation window 401. The observation window 401 is made of high-temperature resistant tempered glass to allow observation of the interior of the mixing tank 30. Through the feeding port 402, conductive agents and other auxiliary materials can be added during mixing.

[0048] Please see Figures 1 to 3 In some embodiments, the small mixer 100 further includes a fixed base 60 that is connected to the adjusting bracket 20 and spaced apart from the mixing tank 30, and one end of the sealing cover 41 is rotatably connected to the fixed base 60.

[0049] Optionally, the fixed base 60 is arranged at intervals with the mixing tank 30 and provides rotational support for the sealing cover 41. The fixed base 60 is provided with a drive cylinder 61, which can realize the rotation of the sealing cover 41 to improve the convenience of opening or closing the opening 311 of the sealing cover 41.

[0050] Please see Figures 1 to 3 In some embodiments, the small mixer 100 further includes a support flange 33 rotatably connected to the adjusting bracket 20 and a mixing driver 34 connected to the adjusting bracket 20 and used to drive the support flange 33 to rotate, and the mixing tank 30 is connected to the support flange 33.

[0051] Please see Figures 1 to 3Optionally, the top plate 21 has a rotating hole with a bearing, and the support flange 33 is rotatably connected to the top plate 21 through the bearing. The mixing driver 34 can also be a servo motor. The mixing driver 34 drives the support flange 33 to rotate and makes the mixing barrel 30 rotate synchronously with the support flange 33. The rotation speed of the mixing barrel 30 can be 0~200r / min, and it can rotate clockwise or counterclockwise. The stirring paddle 42 and the mixing barrel 30 are both driven by independent servo motors, so that the mixing barrel 30 and the stirring paddle 42 can form a compound motion, which enhances the macroscopic tumbling and flow of materials and ultimately improves the uniformity of mixing.

[0052] Optionally, the base 10 is also equipped with a control panel 11, which integrates a PLC control system, can preset parameters such as stirring speed, heating temperature, and mixing time, and supports recipe storage and recall functions.

[0053] Please see Figures 1 to 3 In some embodiments, the small mixer 100 further includes a scraper 43, which is at least partially located in the receiving cavity 31. Specifically, one end of the scraper 43 is connected to the sealing cover 41, and the other end of the scraper 43 extends into the receiving cavity 31. The edge of the scraper 43 is at a predetermined distance from the cavity wall of the receiving cavity 31. The edge of the scraper 43 is arranged at equal intervals with the cavity wall of the receiving cavity 31, and the predetermined distance is greater than 0 and less than or equal to 0.5 mm.

[0054] Optionally, when the mixing drum 30 is rotating, the scraper 43 can scrape off the material adhering to the cavity wall of the receiving cavity 31 to avoid material residue and ultimately improve the uniformity of mixing and overall efficiency.

[0055] Optionally, the scraper 43 is detachably connected to the sealing cover 41, so that it can be removed and cleaned separately.

[0056] Please see Figures 1 to 3 In some embodiments, the small mixer 100 further includes a snap-fit ​​assembly, which includes a fastener that is rotatably connected to the support flange 33 and a hook 321 disposed on the side surface of the mixing hopper 30 and cooperating with the fastener. The fastener engages the hook 321 to detachably connect the mixing hopper 30 to the support flange 33.

[0057] Optionally, the fastener (not shown in the figure) can be plate-shaped and have a groove adapted to the hook 321. The fastener rotates to the mixing tank 30 so that the groove engages with the hook 321, or the fastener rotates away from the mixing tank 30 so that the groove separates from the hook 321. Multiple fastening assemblies are arranged at intervals along the circumference of the mixing tank 30. In this embodiment, three fastening assemblies are provided. In other embodiments, the appropriate fastener can be selected according to the actual situation, and no limitation is made here. The cooperation between the fastener and the hook 321 can realize the quick installation or removal of the mixing tank 30, improving the efficiency of equipment maintenance and the safety of operation.

[0058] Please see Figures 1 to 3 In some embodiments, the small mixer 100 further includes a heating assembly 50, which includes a positioning cover 51 connected to the adjusting bracket 20 and arranged circumferentially around the mixing tank 30, and a heating tube 52 arranged on the positioning cover 51. Two heating assemblies 50 are arranged, with the two heating assemblies 50 located on opposite sides of the mixing tank 30, i.e., the mixing tank 30 is located between the two heating assemblies 50.

[0059] Optionally, the positioning cover 51 is bent around the circumference of the mixing tank 30, and the heating tube 52 is arranged in a meandering serpentine pattern on the surface of the positioning cover 51. The heating tube 52 can be filled with high-temperature liquid, thereby providing 360-degree heating to the mixing tank 30 and avoiding the problems of uneven heating and heating dead zones.

[0060] Optionally, the heating tube 52 is made of copper and has an inner diameter of 10mm. The heating tube 52 can be connected to an oil temperature controller, the heating medium is heat transfer oil, and the temperature controller monitors the temperature inside the mixing tank 30 in real time and feeds it back to the control panel 11.

[0061] Optionally, a backflushing port is provided on the heating tube 52 to periodically remove scale inside the heating tube 52 through high-pressure water flow, ensuring heating efficiency.

[0062] Please see Figures 1 to 3 The working process of the small mixer 100 provided in this application is as follows:

[0063] S1: Feeding stage: Add materials through opening 311 and / or feeding port 402, drive mixing tank 30 to rotate at low speed of 50r / min, and check the material status through observation window 401 and add conductive agent and other auxiliary materials.

[0064] S2: Mixing stage: Adjust the speed of the stirring paddle 42 to 2000~4000r / min, and at the same time turn on the heating component 50. The temperature of the heating component 50 is set to 60~120℃. The mixing tank 30 rotates synchronously at a speed of 100r / min. The mixing time is set to a range of 15~45 minutes according to the material characteristics.

[0065] S3: Discharge: After mixing is completed, the mixing tank 30 is tilted to the maximum angle, the sealing cover 41 is opened, and the material in the accommodating cavity 31 is discharged.

[0066] S4: Cleaning: Loosen all fasteners and unload the mixing tank from the support flange 33. Use a high-pressure water gun in conjunction with the scraper 43 for cleaning.

[0067] Improved mixing efficiency: The combination of the inclined mixing tank 30 and the eccentric stirring paddle 42 enhances the macroscopic movement of materials. Combined with the cleaning by the scraper 43, the mixing uniformity is improved by more than 40% compared with traditional equipment.

[0068] Precise and controllable heating: The outer copper heating tube 52 can achieve 360-degree uniform heating with a temperature control accuracy of ±2℃, which meets the mixing requirements of temperature-sensitive materials such as lithium battery electrode materials.

[0069] Optimized cleaning efficiency: The snap-on unloading design reduces the disassembly time of the mixing tank 30 to 2 minutes, and the scraper 43 continuously cleans the tank wall, reducing the residue rate of sticky materials to below 0.5%.

[0070] Multi-scenario adaptability: The rotation speed of the stirring paddle 42 and the tilt angle of the mixing tank 30 are both adjustable, which can adapt to the mixing needs of materials ranging from low viscosity powder to high viscosity paste, improving the equipment's versatility by 60%.

[0071] The above are merely optional embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A small mixing machine, characterized in that, include: The mixing tank comprises a mixing assembly, a base, and an adjusting bracket connected to the mixing tank. The mixing tank has a receiving cavity and an opening that communicates with the receiving cavity and faces upward. The mixing assembly is detachably connected to the mixing tank at the opening, and the mixing end of the mixing assembly extends into the receiving cavity through the opening. The base is fixed to a predetermined plane. The adjusting bracket is rotatably connected to the base and can rotate relative to the base by a predetermined angle to adjust the angle between the plane defined by the opening and the predetermined plane.

2. A compact mixer as claimed in claim 1, characterized in that: The small mixer also includes a locking component, and a locking part is provided on the base; the locking component has a locked state and an unlocked state, and when the locking component is in the locked state, the locking component is connected to the locking part to restrict the adjustment bracket from rotating relative to the base; When the locking element is in the unlocked state, the locking element disengages from the locking part and releases the restriction on the rotation of the adjusting bracket.

3. The small mixer as described in claim 2, characterized in that: The adjusting bracket has an adapter groove, the base portion is located in the adapter groove, the two side walls of the adapter groove are rotatably connected to the two side surfaces of the base, and the locking member is connected to the groove wall of the adapter groove and rotates synchronously with the adjusting bracket.

4. The compact mixer of claim 2, wherein: The locking part includes a plurality of locking holes formed on the base, each of the locking holes being arranged along the rotation path of the locking member. When the locking member is in the locked state, the locking member is inserted into one of the locking holes. Alternatively, the locking part is a locking groove formed on the base, the locking groove being arranged along the rotation path of the locking member. When the locking member is in the locked state, the locking member is fixed to the locking groove by fasteners.

5. A compact mixer as claimed in any one of claims 1 to 4, wherein: The stirring assembly includes a sealing cap that detachably covers the opening, a stirring paddle with one end rotatably connected to the sealing cap and the other end extending into the receiving cavity, and a stirring driver connected to the sealing cap and used to drive the stirring paddle, wherein the rotation center line of the stirring paddle is at a predetermined distance from the central axis of the mixing tank.

6. The small mixer as described in claim 5, characterized in that: The small mixer also includes a fixed base connected to the adjusting bracket and spaced apart from the mixing tank, and one end of the sealing cover is rotatably connected to the fixed base.

7. A compact mixer as claimed in any one of claims 1 to 3 wherein: The small mixer also includes a support flange rotatably connected to the adjusting bracket and a mixing driver connected to the adjusting bracket and used to drive the support flange to rotate, wherein the mixing bucket is detachably connected to the support flange.

8. A compact mixer as claimed in claim 7, characterised in that: The small mixer also includes a scraper, which is at least partially located in the receiving cavity, and the edge of the scraper is at a predetermined distance from the cavity wall.

9. The compact mixer of claim 7, wherein: The small mixer also includes a snap-fit ​​assembly, which includes a fastener that rotatably connects to the support flange and a hook disposed on the side surface of the mixing barrel and engaging with the fastener. The fastener engages the hook to detachably connect the mixing barrel to the support flange.

10. A compact mixer as claimed in any one of claims 1 to 3 wherein: The small mixer also includes a heating assembly, which includes a positioning cover connected to the adjusting bracket and arranged circumferentially around the mixing barrel, and a heating tube arranged on the positioning cover.

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