High-stability magnetic transmission stirrer

Abstract

The application discloses a high-stability magnetic transmission stirrer and belongs to the technical field of chemical stirring kettles. Mainly including a support frame, the top end of the support frame is fixedly installed with a stirring kettle, the bottom end of the support frame is fixedly installed with a speed reducer motor on one side, the stirring kettle bottom end is connected with a belt joint, the top end of the belt joint is connected with a magnetic force box body, the inner side of the magnetic force box body is provided with a magnetic drive assembly, and a positioning pipe is fixedly installed on the inner side of the magnetic force box body. The high-stability magnetic transmission stirrer reaches the multiple groups of outer magnetic rotors and inner magnetic rotors, increases the anti-dislocation capacity, disperses the magnetic field disturbance of the inner and outer magnetic rotors when the inner and outer magnetic rotors slightly shift in the axial direction or the radial direction due to load fluctuation or installation error into multiple slight disturbances, increases the rotation stability, the bearings one and two at the two ends effectively limit the radial and axial shaking of the rotating joint shaft, further improves the operation stability, and ensures the use efficiency of the stirrer.

Description

Technical Field

[0001] This application relates to the field of chemical mixing tank technology, specifically a high-stability magnetically driven stirrer. Background Technology

[0002] A stirred tank reactor is one of the core pieces of equipment in chemical production, mainly used to realize processes such as mixing, reaction, heat transfer, and mass transfer of materials. It uses a mechanical stirring device to drive the materials inside the reactor to form a specific flow pattern, ensuring that different components are in full contact and undergo chemical reactions or physical changes. In the process of using chemical mixing tanks, stirring is required by a stirrer. Currently, magnetic drive stirrers are commonly used as an innovative technology for chemical mixing tanks. Through the principle of magnetic coupling, "contactless" power transmission is achieved, which solves the leakage risk of traditional mechanical seals. However, existing magnetically driven stirrers are prone to decoupling of the inner and outer magnets under high temperature, high pressure or sudden load changes, which increases the maintenance frequency and leads to a decrease in transmission efficiency, affecting the stability of the stirring structure. Insufficient stability can affect the continuity and safety of chemical production, thereby affecting the efficiency of the stirrer.

[0003] Therefore, it is necessary to provide a highly stable magnetically driven stirrer to solve the above problems.

[0004] 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. Utility Model Content

[0005] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a highly stable magnetically driven stirrer, thereby solving the problem that the internal and external magnets of the existing magnetically driven stirrer are prone to decoupling under high temperature, high pressure or load conditions, which affects stability.

[0006] The technical solution adopted by this application to solve its technical problem is: a high-stability magnetic transmission stirrer, including a support frame, a stirring vessel fixedly installed at the top of the support frame, a reduction motor fixedly installed on one side of the bottom end of the support frame, and a belt connector connected to the bottom end of the stirring vessel; The top end of the belt joint is connected to a magnetic housing, and a magnetic drive assembly is provided inside the magnetic housing. The magnetic drive assembly includes: A positioning tube is fixedly installed inside the magnetic box. An outer magnetic rotor is connected to the inner side of the positioning tube, and an isolation sleeve is provided inside the outer magnetic rotor. An inner magnetic rotor is provided inside the isolation sleeve. The bottom end of the positioning tube is connected to a plug, and the top end of the positioning tube is provided with a top sealing plate.

[0007] Furthermore, four sets of external magnetic rotors are provided on the inner side of the positioning tube, and a steel sleeve is connected between each two adjacent sets of external magnetic rotors.

[0008] Furthermore, a sealing gasket is connected between the positioning tube and the plug, and the inner diameter of the sealing gasket is the same as the outer diameter of the top part of the plug.

[0009] Furthermore, the inner magnetic rotor is provided in four sets, and a steel sleeve is connected to the middle of each adjacent set of inner magnetic rotors.

[0010] Furthermore, a rotating shaft is fixedly connected to the inner side of the inner magnetic rotor, and a plug-in end is fixedly connected to the top of the rotating shaft.

[0011] Furthermore, a bearing is connected to the bottom outer side of the rotating shaft, and a bearing is connected to the top outer side of the rotating shaft.

[0012] Furthermore, a stirring blade is snapped and fixed to the outer top of the plug-in end, and the top wall of the plug-in end is provided with a screw hole for mounting a screw.

[0013] Furthermore, both the plug and the top sealing plate have round holes inside that are adapted to the rotating shaft.

[0014] The beneficial effects of this application are as follows: The high-stability magnetic drive stirrer provided by this application sets the outer magnetic rotor and inner magnetic rotor into multiple groups during use, which increases the anti-misalignment ability. The magnetic field disturbance caused by slight axial or radial offset of the inner and outer magnetic rotors due to load fluctuation or installation error is dispersed into multiple slight disturbances, which increases rotational stability. The bearings at both ends effectively limit the radial and axial wobbling of the rotating shaft, further improving the operational stability and ensuring the efficiency of the stirrer.

[0015] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. These will be further described in detail below with reference to figures. Attached Figure Description

[0016] 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: Figure 1 This is an overall schematic diagram of a high-stability magnetically driven stirrer according to this application; Figure 2 for Figure 1 Overall schematic diagram of the mixing mechanism; Figure 3 for Figure 2 A partial cross-sectional schematic diagram of the mixing mechanism; Figure 4 for Figure 3 A partially exploded cross-sectional view of the magnetic drive assembly.

[0017] The following are the labeling elements in the figure: 1. Support frame; 2. Mixing vessel; 3. Belt joint; 4. Magnetic box; 5. Magnetic drive assembly; 501. Positioning tube; 502. Sealing gasket; 503. Plug; 504. Outer magnetic rotor; 505. Steel sleeve one; 506. Top sealing plate; 507. Rotary connecting shaft; 508. Inner magnetic rotor; 509. Steel sleeve two; 510. Isolation sleeve; 6. Bearing 1; 7. Bearing 2; 8. Plug-in end; 9. Stirring blade; 10. Gear motor. Detailed Implementation

[0018] 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.

[0019] 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.

[0020] like Figure 1-4 As shown, this application provides a high-stability magnetic drive stirrer, including a support frame 1, a stirring vessel 2 fixedly installed at the top of the support frame 1, the stirring vessel 2 being used to support chemicals, a reduction motor 10 fixedly installed on one side of the bottom end of the support frame 1, a belt joint 3 connected to the bottom end of the stirring vessel 2, and multiple sets of belt drives between the belt joint 3 and the reduction motor 10, which facilitates the rotation of the inner outer magnetic rotor 504. The top of the belt joint 3 is connected to a magnetic housing 4, which is used for external protection of the internal rotor. A magnetic drive assembly 5 is provided on the inner side of the magnetic housing 4, which is used to provide power support for the rotation of the stirring blade 9.

[0021] like Figure 4As shown, a rotating shaft 507 is fixedly connected to the inner side of the inner magnetic rotor 508, and a plug-in end 8 is fixedly connected to the top of the rotating shaft 507. The rotating shaft 507 is used to provide support for the installation of the stirring blade 9. The plug-in end 8 at the top of the rotating shaft 507 is provided with multiple protrusions. The stirring blade 9 is snapped and fixed to the outer top of the plug-in end 8. The top wall of the plug-in end 8 is provided with screw holes for screw installation, which facilitates ensuring the axial stability of the stirring blade 9 after installation and reduces the frequency of shaking during stirring.

[0022] A positioning tube 501 is fixedly installed inside the magnetic box 4. An outer magnetic rotor 504 is connected to the inside of the positioning tube 501. An isolation sleeve 510 is provided inside the outer magnetic rotor 504. The isolation sleeve 510 is provided between the outer magnetic rotor 504 and the inner magnetic rotor 508 to separate them. The torque is transmitted from the outside to the completely enclosed equipment without contact through the magnetic field. The inner magnetic rotor 508 is provided inside the isolation sleeve 510. like Figure 4 As shown, four sets of external magnetic rotors 504 are arranged on the inner side of the positioning tube 501. A steel sleeve 505 is connected between each pair of adjacent sets of external magnetic rotors 504. The steel sleeve 505 is made of stainless steel and is connected between two adjacent external magnetic rotors 504. The function of these steel sleeves 505 is to create a certain gap between the external magnetic rotors 504, providing space for thermal expansion and effectively reducing thermal stress. Setting multiple external magnetic rotors 504 also has the following functions: even if a certain layer of external magnetic rotors 504 has a problem, the other layers can still work, and the system will not be completely paralyzed. During maintenance, only the damaged layer can be replaced, reducing maintenance costs and difficulty.

[0023] like Figure 4 As shown, there are four sets of inner magnetic rotors 508. The middle of each pair of adjacent inner magnetic rotors 508 is connected to a steel sleeve 509. The setting mechanism of the inner magnetic rotors 508 and the steel sleeve 509 is similar to that of the outer magnetic rotors 504. The number of inner magnetic rotors 508 is matched with that of the outer magnetic rotors 504, and they are placed at the same height.

[0024] The bottom end of the positioning tube 501 is connected to a plug 503, and the top end of the positioning tube 501 is provided with a top sealing plate 506.

[0025] like Figure 4 As shown, a sealing gasket 502 is connected between the positioning tube 501 and the plug 503. The inner diameter of the sealing gasket 502 is the same as the outer diameter of the top part of the plug 503. The plug 503 is fixedly installed at the bottom end of the positioning tube 501, and the sealing gasket 502 is set to improve the sealing of the installation, so as to ensure the stability of the installation of multiple external magnetic rotors 504 on the inner side.

[0026] like Figure 3As shown, a bearing 6 is connected to the bottom outer side of the rotating shaft 507, and a bearing 7 is connected to the top outer side of the rotating shaft 507. The bearings 6 and 7 are positioned and installed at both ends of the outer side of the rotating shaft 507 to effectively limit the radial and axial sway of the rotating shaft 507 and further improve the operational stability. The bearings 6 and 7 are respectively locked at the upper and lower ends of the inner side of the magnetic box 4 to ensure the stability of the installation.

[0027] like Figure 4 As shown, both the plug 503 and the top sealing plate 506 have round holes that fit the rotating shaft 507. The plug 503 and the top sealing plate 506 pass through the rotating shaft 507, which provides a certain restriction on the axial rotation of the rotating shaft 507 and further improves the stability of the installation.

[0028] Working principle: When processing chemical products, the product is first transferred to the inside of the mixing tank 2. Then, the belt is connected to the geared motor 10, which drives the belt joint 3 to rotate. The belt joint 3 drives the positioning tube 501 and the outer magnetic rotor 504 inside the magnetic box 4 to rotate. The torque is transmitted from the outside to the completely enclosed equipment without contact through the magnetic field, which drives the inner magnetic rotor 508 inside the isolation sleeve 510 to rotate. Then, the inner magnetic rotor 508 drives the rotating shaft 507 to rotate. The outer side of the rotating shaft 507 is connected by bearing 6 and bearing 7 to improve the stability of the connection and reduce the shaking of the rotating shaft 507 during rotation, thereby improving the rotational stability. With the cooperation of multiple sets of outer magnetic rotors 504 and inner magnetic rotors 508, the anti-misalignment ability is increased. The magnetic field disturbance caused by slight axial or radial offset of the inner and outer magnetic rotors due to load fluctuations or installation errors is dispersed into multiple slight disturbances, increasing rotational stability and ensuring mixing efficiency.

[0029] 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 highly stable magnetically driven stirrer, characterized in that: include: A support frame (1) is provided, with a stirring vessel (2) fixedly installed at the top of the support frame (1), and a geared motor (10) fixedly installed on one side of the bottom end of the support frame (1). A belt connector (3) is connected to the bottom end of the stirring vessel (2). The top of the belt joint (3) is connected to a magnetic housing (4), and a magnetic drive assembly (5) is provided on the inner side of the magnetic housing (4). The magnetic drive assembly (5) includes: A positioning tube (501) is fixedly installed inside the magnetic box (4). An outer magnetic rotor (504) is connected to the inside of the positioning tube (501), and an isolation sleeve (510) is provided inside the outer magnetic rotor (504). An inner magnetic rotor (508) is provided inside the isolation sleeve (510). The bottom end of the positioning tube (501) is connected to a plug (503), and the top end of the positioning tube (501) is provided with a top sealing plate (506).

2. The high-stability magnetically driven stirrer according to claim 1, characterized in that: The inner side of the positioning tube (501) is provided with four sets of external magnetic rotors (504), and a steel sleeve (505) is connected between each two adjacent sets of external magnetic rotors (504).

3. The high-stability magnetically driven stirrer according to claim 1, characterized in that: A sealing gasket (502) is connected between the positioning tube (501) and the plug (503), and the inner diameter of the sealing gasket (502) is the same as the outer diameter of the top part of the plug (503).

4. The high-stability magnetically driven stirrer according to claim 1, characterized in that: The inner magnetic rotor (508) is provided in four sets, and the middle of each of the two adjacent sets of inner magnetic rotors (508) is connected to a steel sleeve (509).

5. A high-stability magnetically driven stirrer according to claim 4, characterized in that: The inner magnetic rotor (508) is fixedly connected to a rotating shaft (507), and the top end of the rotating shaft (507) is fixedly connected to a plug end (8).

6. A high-stability magnetically driven stirrer according to claim 5, characterized in that: The outer bottom end of the rotating shaft (507) is connected to a bearing one (6), and the outer top end of the rotating shaft (507) is connected to a bearing two (7).

7. A high-stability magnetically driven stirrer according to claim 5, characterized in that: The outer top of the plug end (8) is fixed with a stirring blade (9), and the top wall of the plug end (8) is provided with a screw hole for screw installation.

8. A high-stability magnetically driven stirrer according to claim 5, characterized in that: Both the plug (503) and the top sealing plate (506) are provided with round holes that are adapted to the rotating shaft (507).

Images