High seal magnetic drive agitator

Abstract

The application discloses a high-sealing magnetic transmission stirrer and belongs to the technical field of stirrers. Mainly including a tank body, the upper end of the tank body is provided with a tank cover, a sealing ring is arranged between the tank body and the tank cover, the inside of the tank body and the tank cover is provided with a stirring assembly, the stirring assembly comprises a mounting frame mounted in the inside of the tank cover, a stirring shaft is mounted in the middle part of the mounting frame, stirring blades are mounted on the outer wall of the stirring shaft, and an installation assembly is mounted on the tank body and is used for connecting the tank body and the tank cover. The high-sealing magnetic transmission stirrer can realize the alignment of the tank cover and the tank body quickly through the clamping cooperation between the positioning frame of the guide part and the positioning plate, the even pressure on the edge of the tank cover can be converted into the even pressure on the arc-shaped plate through the L-shaped driving plate pushed by the cylinder in the installation assembly, the pressure can be evenly transmitted to the whole tank cover through the arc-shaped plate adhering to the edge of the tank cover, and the sealing ring can be evenly compressed along the adhering surface of the tank cover and the tank body.

Description

Technical Field

[0001] This application relates to the field of agitator technology, specifically a high-sealing magnetic drive agitator. Background Technology

[0002] In industrial production, agitators, as core equipment for processes such as material mixing, reaction, and dissolution, are widely used in various industries including chemical, pharmaceutical, food, and new materials. Their performance directly affects material handling efficiency, product quality stability, and production process safety. Especially in scenarios involving flammable, explosive, toxic, volatile, or high-purity materials, the sealing performance and operational reliability of agitators are critical technical indicators.

[0003] During the mixing operation, the material inside the tank will generate a certain pressure and flow impact due to the rotation of the mixing blades. If the sealing ring is not fully compressed in some areas, a sealing gap will be formed, which will lead to material leakage. However, the connection between the tank cover and the tank body of some traditional mixers often relies on manual alignment and a multi-bolt fixing structure. Operators need to manually adjust the position of the tank cover and ensure that the bolt holes are aligned before tightening the bolts one by one. The installation process is not only cumbersome, time-consuming and labor-intensive, but also subject to the limitations of manual operation accuracy, which can easily lead to misalignment of the tank cover, resulting in uneven force on the sealing ring between the tank cover and the tank body.

[0004] Therefore, it is necessary to provide a highly sealed magnetically driven stirrer to solve the above problems.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0006] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a high-sealing magnetic drive stirrer, which solves the problem that the connection between the lid and the body of some traditional stirrers relies on manual alignment and multiple bolt fixing structures, which easily leads to uneven force on the sealing ring between the lid and the body.

[0007] The technical solution adopted by this application to solve its technical problem is: a high-sealing magnetic drive stirrer, including a tank body, a tank cover provided at the upper end of the tank body, a sealing ring provided between the tank body and the tank cover, a stirring assembly provided inside the tank body and the tank cover, the stirring assembly including a mounting bracket installed inside the tank cover, a stirring shaft installed in the middle of the mounting bracket, stirring blades installed on the outer wall of the stirring shaft, and further including...

[0008] An installation component is mounted on the tank body for connecting the tank body and the tank cover, wherein the tank body and the tank cover are provided with positioning and installation guides to assist the positioning of the tank cover.

[0009] A magnetic drive assembly, mounted on the tank lid, is used to drive the stirring shaft to rotate and maintain the tank's seal.

[0010] Furthermore, the mounting assembly includes multiple support plates, which are evenly distributed on the outer wall of the upper end of the tank. An mounting plate is installed on the upper end of each support plate. A cylinder is rotatably mounted on one side of each mounting plate. An L-shaped drive plate is rotatably mounted on the upper end of each mounting plate. The other end of the L-shaped drive plate is rotatably connected to the output end of the cylinder. A connecting plate is installed in the middle of the L-shaped drive plate. A pressure plate is installed on the side of the connecting plate near the tank. An arc-shaped plate is installed at the lower end of the pressure plate. The lower surface of the arc-shaped plate is tightly fitted to the edge of the upper surface of the tank cover.

[0011] Furthermore, the guide portion includes multiple positioning frames, which are evenly installed on the outer wall of the upper end of the tank. Multiple positioning plates corresponding to the positioning frames are installed on the outer wall of the lower end of the tank cover. The positioning plates are snapped into the positioning frames. Neodymium iron boron magnets are installed inside the positioning frames. Ferromagnetic positioning blocks are installed at the lower end of the positioning plates. The neodymium iron boron magnets can be attracted to the ferromagnetic positioning blocks.

[0012] Furthermore, multiple pressure sensors are installed at the lower end of the can lid.

[0013] Furthermore, the magnetic transmission assembly includes a support sleeve installed on the upper end of the tank lid, a drive motor installed on the upper end of the support sleeve, a connecting sleeve installed on the output end of the drive motor, an outer magnetic rotor installed on the lower end of the connecting sleeve, a sealing sleeve installed in the middle of the upper end of the tank lid, the outer magnetic rotor being sleeved on the outside of the sealing sleeve, and an inner magnetic rotor installed on the upper end of the stirring shaft, the inner magnetic rotor being located inside the sealing sleeve.

[0014] Furthermore, a feed inlet is provided at the upper end of the can lid.

[0015] Furthermore, a support leg is installed on the outer wall at the lower end of the tank, and a discharge port is provided in the middle of the lower end of the tank.

[0016] The beneficial effects of this application are as follows: The high-sealing magnetic transmission stirrer provided by this application can quickly achieve the alignment of the tank lid and the tank body by engaging the positioning frame and positioning plate of the guide part. The cylinder in the installation component pushes the L-shaped drive plate to convert it into a uniform pressure on the edge of the tank lid by the arc plate. The arc plate fits against the edge of the tank lid and can evenly transmit the pressure to the entire tank lid, ensuring that the sealing ring is evenly compressed along the contact surface between the tank body and the tank lid.

[0017] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1 This is an overall schematic diagram of a high-sealing magnetically driven stirrer according to this application;

[0020] Figure 2 This is an exploded schematic diagram of a high-sealing magnetically driven stirrer according to this application;

[0021] Figure 3 This is a bottom view schematic diagram of a high-sealing magnetically driven stirrer according to this application;

[0022] Figure 4 This is a schematic diagram of the stirring assembly of a high-sealing magnetically driven stirrer according to this application;

[0023] Figure 5 This is a schematic diagram of the magnetic drive assembly of a high-sealing magnetic drive stirrer according to this application;

[0024] Figure 6 This is a schematic diagram of the stirring assembly and magnetic drive assembly structure of a high-sealing magnetic drive stirrer according to this application;

[0025] Figure 7 for Figure 1 Enlarged view of point A in the middle.

[0026] The following are the labeling elements in the figure:

[0027] 1. Tank body; 2. Tank cover; 3. Agitator assembly; 31. Mounting bracket; 32. Agitator shaft; 33. Agitator blades; 4. Mounting assembly; 41. Support plate; 42. Mounting plate; 43. Cylinder; 44. L-shaped drive plate; 45. Connecting plate; 46. Pressure plate; 47. Arc plate; 48. Positioning frame; 49. Neodymium iron boron magnet; 410. Positioning plate; 411. Ferromagnetic positioning block; 412. Pressure sensor; 5. Magnetic transmission assembly; 51. Support sleeve; 52. Connecting sleeve; 53. Outer magnetic rotor; 54. Sealing sleeve; 55. Inner magnetic rotor; 56. Drive motor; 6. Sealing ring; 7. Support leg; 8. Inlet; 9. Outlet. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

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

[0030] like Figure 1-2 As shown, this application provides a high-sealing magnetic drive stirrer, including a tank 1 for containing materials to be stirred, a tank cover 2 for sealing the tank opening at the upper end of the tank 1, and a sealing ring 6 between the tank 1 and the tank cover 2. The sealing ring 6 can fill the tiny gaps between the two mating surfaces, improve the sealing performance, and prevent material leakage or the entry of external impurities.

[0031] like Figure 4 As shown, the tank body 1 and the tank cover 2 are equipped with a stirring assembly 3 for stirring materials. The stirring assembly 3 includes a mounting bracket 31 fixedly installed inside the tank cover 2. A stirring shaft 32 is rotatably installed in the middle of the mounting bracket 31. Stirring blades 33 are fixedly installed on the outer wall of the stirring shaft 32. The stirring shaft 32 is located inside the tank body 1. When the stirring shaft 32 rotates around its own axis, it will drive the stirring blades 33 to rotate synchronously. The stirring blades 33 contact the materials in the tank body 1 and generate shearing and mixing forces to achieve uniform stirring of materials and meet the requirements of different processes for the degree of mixing of materials.

[0032] like Figure 2-7 As shown, the upper end of the tank body 1 is provided with multiple sets of mounting components 4 for connecting the tank body 1 and the tank cover 2. The mounting components 4 include multiple support plates 41, which are uniformly fixed to the outer wall of the upper end of the tank body 1. The upper end of the support plate 41 is fixedly mounted with a mounting plate 42 by bolts. A cylinder 43 is rotatably mounted on one side of the mounting plate 42. The cylinder 43 serves as a power source to provide linear driving force. An L-shaped drive plate 44 is rotatably mounted on the upper end of the mounting plate 42. The other end of the L-shaped drive plate 44 is rotatably connected to the output end of the cylinder 43. A connecting plate 45 is fixedly mounted in the middle of the L-shaped drive plate 44. A pressure plate 46 is fixedly mounted on the side of the connecting plate 45 near the tank body 1. An arc-shaped plate 47 is fixedly mounted on the lower end of the pressure plate 46. The lower surface of the arc-shaped plate 47 is tightly fitted to the edge of the upper surface of the tank cover 2.

[0033] When cylinder 43 is started, the output end of cylinder 43 extends and pushes the L-shaped drive plate 44 to rotate upward around the rotation point of the mounting plate 42. The L-shaped drive plate 44 drives the pressure plate 46 to move downward synchronously through the connecting plate 45, thereby driving the arc plate 47 to press tightly against the edge of the can cover 2, so that the can cover 2 is subjected to uniform downward pressure. The sealing ring 6 between the can cover 2 and the can body 1 is further compressed and deformed under pressure, completely filling the gap between the two, realizing the sealed connection between the can body 1 and the can cover 2, effectively preventing the material from leaking from the can opening due to pressure or stirring during the stirring process, while avoiding the entry of outside air and affecting the properties of the material.

[0034] like Figure 2-3 As shown, the tank body 1 and the tank cover 2 are provided with guide parts for assisting the positioning of the tank cover 2 and enhancing the sealing stability. The guide parts include multiple positioning frames 48, which are uniformly fixedly installed on the outer wall of the upper end of the tank body 1. Multiple positioning plates 410 corresponding to the positioning frames 48 are fixedly installed on the outer wall of the lower end of the tank cover 2. The positioning plates 410 are snapped into the positioning frames 48. Through the snapping cooperation between the positioning plates 410 and the positioning frames 48, the installation position of the tank cover 2 on the tank body 1 can be quickly determined, avoiding the tank cover 2 from shifting and causing uneven force on the sealing ring 6, thus ensuring the sealing effect.

[0035] A neodymium iron boron magnet 49 is fixedly installed inside the positioning frame 48, and a ferromagnetic positioning block 411 is fixedly installed at the lower end of the positioning plate 410. The neodymium iron boron magnet 49 can be attracted to the ferromagnetic positioning block 411, and the magnetic force is used to further enhance the pre-fixation effect between the can lid 2 and the can body 1, preventing the can lid 2 from shifting when the installation component 4 is not fully activated. Multiple pressure sensors 412 are fixedly installed at the lower end of the can lid 2. The pressure sensors 412 can detect the pressure value between the can lid 2 and the can body 1 in real time. When the installation component 4 drives the arc plate 47 to press the can lid 2, the pressure sensor 412 feeds the pressure data back to the control system. If the pressure reaches the preset sealing threshold, it means that the seal is qualified and the stirring can be started. If the pressure is insufficient, the system can prompt to adjust the output of the cylinder 43 to ensure that the sealing performance meets the standard and avoid material leakage due to poor sealing.

[0036] like Figure 4-6As shown, the upper end of the tank cover 2 is provided with a magnetic transmission assembly 5 for driving the stirring shaft 32 to rotate and keeping the tank body 1 sealed. The magnetic transmission assembly 5 includes a support sleeve 51 fixedly installed on the upper end of the tank cover 2. A drive motor 56 is fixedly installed on the upper end of the support sleeve 51. The drive motor 56 serves as a power source and can output rotational power. A connecting sleeve 52 is fixedly installed on the output end of the drive motor 56. An outer magnetic rotor 53 is fixedly installed on the lower end of the connecting sleeve 52. A sealing sleeve 54 is fixedly installed in the middle of the upper end of the tank cover 2. The sealing sleeve 54 can isolate the outer magnetic rotor 53 from the inside of the tank body 1 to ensure that the tank body 1 is sealed. The outer magnetic rotor 53 is sleeved on the outside of the sealing sleeve 54. An inner magnetic rotor 55 is fixedly installed on the upper end of the stirring shaft 32. The inner magnetic rotor 55 is located inside the sealing sleeve 54.

[0037] When the drive motor 56 starts, its output end drives the connecting sleeve 52 and the outer magnetic rotor 53 to rotate synchronously. The outer magnetic rotor 53 generates a rotating magnetic field. Since the inner magnetic rotor 55 is located within the magnetic field range of the outer magnetic rotor 53, and the two are isolated by the sealing sleeve 54 (without physical contact), the rotating magnetic field of the outer magnetic rotor 53 will drive the inner magnetic rotor 55 to rotate synchronously through magnetic force. The inner magnetic rotor 55 then drives the stirring shaft 32 and the stirring blades 33 to rotate, thereby realizing the stirring of materials. This magnetic transmission method eliminates the need to open a hole in the tank cover 2 for the stirring shaft 32 to pass through, avoiding the leakage risk caused by the shaft hole gap in traditional mechanical seals and improving the sealing performance of the stirrer.

[0038] like Figure 1-3 As shown, the upper end of the tank cover 2 is provided with a feed inlet 8, which is used to add the material to be stirred into the tank 1. After the material is fed, it can be closed by the sealing cover to ensure that the tank 1 is sealed during the stirring process. The lower end of the tank 1 is fixedly installed with a support leg 7, which provides stable support for the entire agitator, keeps the tank 1 in a horizontal state, and avoids the stirring blades 33 from colliding with the tank wall due to the tilt of the tank 1. At the same time, it reserves operating space for the discharge port 9 at the lower end of the tank 1. The middle part of the lower end of the tank 1 is provided with a discharge port 9, and a valve can be installed at the discharge port 9. After the material is stirred, the valve is opened, and the material in the tank 1 is discharged along the discharge port 9 under the action of gravity, which meets the needs of the subsequent production process. Moreover, the discharge port 9 is located in the middle of the tank 1, which can ensure that the material is discharged completely and reduce residue.

[0039] Working principle: When the tank body 1 and the tank cover 2 need to be installed and disassembled, the cylinder 43 of the mounting component 4 at the upper end of the tank body 1 is first activated. The output end of the cylinder 43 extends and pushes the L-shaped drive plate 44 to rotate upward around the rotation point of the mounting plate 42. The L-shaped drive plate 44 drives the pressure plate 46 to move downward synchronously through the connecting plate 45 in the middle, so that the arc plate 47 at the lower end of the pressure plate 46 presses tightly against the edge of the tank cover 2. The design of the arc plate 47 fitting the edge of the tank cover 2 can make the pressure evenly transmitted to the tank cover 2. After the tank cover 2 is subjected to uniform downward pressure, the sealing ring 6 between it and the tank body 1 is further compressed and deformed, completely filling the tiny gaps between the two mating surfaces, and achieving a high-sealing connection between the tank body 1 and the tank cover 2.

[0040] Meanwhile, the pressure sensor 412 at the lower end of the can lid 2 detects the sealing pressure in real time and feeds the data back to the control system: if the pressure reaches the preset sealing threshold, the system determines that the seal is qualified and allows the stirring to be started; if the pressure is insufficient, the system prompts to adjust the output of the cylinder 43 until the sealing pressure meets the standard, thus completely eliminating the risk of leakage.

[0041] After the seal is qualified, the drive motor 56 of the magnetic transmission assembly 5 at the upper end of the can cover 2 is started. The output end of the drive motor 56 drives the connecting sleeve 52 to rotate synchronously, and the outer magnetic rotor 53 at the lower end of the connecting sleeve 52 rotates together. The outer magnetic rotor 53 generates a rotating magnetic field when it rotates. Since the inner magnetic rotor 55 is located inside the sealing sleeve 54 (isolated from the outer magnetic rotor 53 by the sealing sleeve 54 and has no physical contact), and is within the magnetic field range of the outer magnetic rotor 53, the rotating magnetic field of the outer magnetic rotor 53 drives the inner magnetic rotor 55 to rotate synchronously through magnetic force.

[0042] The inner magnetic rotor 55 is fixedly connected to the stirring shaft 32, thereby driving the stirring shaft 32 and the stirring blades 33 on the outer wall to rotate. The stirring blades 33 contact the material in the tank 1 and generate shearing and mixing forces, so that the material is uniformly stirred to meet the process requirements for mixing degree. This non-contact magnetic transmission method completely avoids the shaft hole gap leakage problem of traditional mechanical seals because it does not require a through hole for the stirring shaft 32 in the tank cover 2, thus ensuring high sealing performance.

[0043] During the stirring process, the sealing pressure between the tank lid 2 and the tank body 1 is continuously monitored by the pressure sensor 412. If the pressure drops (below the preset threshold) due to factors such as vibration, the system will promptly alarm and automatically adjust the output of the cylinder 43 to maintain the sealing state.

[0044] The above description is merely a preferred embodiment of this application and is 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 protection scope of this application.

Claims

1. A high-sealing magnetically driven stirrer, comprising a tank (1), a tank cover (2) provided at the upper end of the tank (1), a sealing ring (6) provided between the tank (1) and the tank cover (2), a stirring assembly (3) provided inside the tank (1) and the tank cover (2), the stirring assembly (3) including a mounting bracket (31) installed inside the tank cover (2), a stirring shaft (32) installed in the middle of the mounting bracket (31), and stirring blades (33) installed on the outer wall of the stirring shaft (32), characterized in that: Also includes The mounting component (4) is mounted on the tank body (1) and is used to connect the tank body (1) and the tank cover (2). The tank body (1) and the tank cover (2) are provided with positioning and mounting guides for assisting the positioning of the tank cover (2). A magnetic drive assembly (5), which is mounted on the tank cover (2), is used to drive the stirring shaft (32) to rotate and keep the tank body (1) sealed.

2. The high-sealing magnetically driven stirrer according to claim 1, characterized in that: The mounting assembly (4) includes multiple support plates (41), which are evenly distributed on the outer wall of the upper end of the tank body (1). An mounting plate (42) is installed on the upper end of the support plate (41). A cylinder (43) is rotatably mounted on one side of the mounting plate (42). An L-shaped drive plate (44) is rotatably mounted on the upper end of the mounting plate (42). The other end of the L-shaped drive plate (44) is rotatably connected to the output end of the cylinder (43). A connecting plate (45) is installed in the middle of the L-shaped drive plate (44). A pressure plate (46) is installed on the side of the connecting plate (45) near the tank body (1). An arc plate (47) is installed at the lower end of the pressure plate (46). The lower surface of the arc plate (47) is tightly attached to the edge of the upper surface of the tank cover (2).

3. The high-sealing magnetically driven stirrer according to claim 1, characterized in that: The guide section includes multiple positioning frames (48), which are evenly installed on the outer wall of the upper end of the tank body (1). Multiple positioning plates (410) corresponding to the positioning frames (48) are installed on the outer wall of the lower end of the tank cover (2). The positioning plates (410) are snapped into the positioning frames (48). Neodymium iron boron magnets (49) are installed inside the positioning frames (48). Ferromagnetic positioning blocks (411) are installed at the lower end of the positioning plates (410). The neodymium iron boron magnets (49) can be attracted to the ferromagnetic positioning blocks (411).

4. The high-sealing magnetically driven stirrer according to claim 3, characterized in that: Multiple pressure sensors (412) are installed at the lower end of the can lid (2).

5. The high-sealing magnetically driven stirrer according to claim 1, characterized in that: The magnetic transmission assembly (5) includes a support sleeve (51) installed on the upper end of the tank cover (2), a drive motor (56) installed on the upper end of the support sleeve (51), a connecting sleeve (52) installed on the output end of the drive motor (56), an outer magnetic rotor (53) installed on the lower end of the connecting sleeve (52), a sealing sleeve (54) installed in the middle of the upper end of the tank cover (2), the outer magnetic rotor (53) being sleeved on the outside of the sealing sleeve (54), and an inner magnetic rotor (55) installed on the upper end of the stirring shaft (32), the inner magnetic rotor (55) being located inside the sealing sleeve (54).

6. A high-sealing magnetically driven stirrer according to claim 5, characterized in that: The upper end of the can lid (2) is provided with a feed inlet (8).

7. A high-sealing magnetically driven stirrer according to claim 3, characterized in that: The lower end of the tank (1) is equipped with a support leg (7) on the outer wall, and the lower end of the tank (1) is provided with a discharge port (9).

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