Magnetic levitation dynamic mixing device and mixing system
By designing a magnetic levitation dynamic mixing device, the magnetic levitation stator drives the rotor and stirring impeller to levitate and rotate within the mixing chamber, solving the problems of wear and particle contamination in magnetic stirring mixers and achieving contactless stirring and uniform mixing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU SUPERMAG INTELLIGENT TECH CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-07-21
Smart Images
Figure CN224524590U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mixing equipment technology, and in particular to a magnetic levitation dynamic mixing device and mixing system. Background Technology
[0002] Dynamic mixers are highly efficient mixing devices widely used in industries such as semiconductors, chemicals, and pharmaceuticals. For example, in semiconductor manufacturing, they are used for mixing high-purity liquids such as cleaning solutions, photoresists, and etching solutions. In the chemical and pharmaceutical industries, they serve as in-line mixing reaction devices for the mixing reactions in the organic synthesis of various intermediates. Dynamic mixers primarily rely on the mechanical action or hydrodynamic effects of their internal rotating components to achieve uniform mixing and reaction of the liquid during flow. Specifically, some dynamic mixers employ a high-speed rotating rotor structure, stirring and mixing the liquid through rotation or other motion methods; another type of design is based on fluid dynamics principles, using optimized flow channels or special structures to allow the liquid to undergo multiple splitting, merging, and cross-flow processes during dynamic flow, thereby achieving the desired mixing effect.
[0003] Currently, online mixing reactions for the organic synthesis of various intermediates in chemical and pharmaceutical processes typically employ magnetic stirrers. These stirrers use an external rotating magnet to generate a magnetic field, driving a magnetic stir bar (usually a small magnet encased in a chemically resistant plastic or metal shell) placed inside the container to rotate, thus causing liquid flow and achieving a stirring effect. However, the magnetic stir bar in a magnetic stirrer is not suspended; it directly contacts the bottom of the container and slides and rotates on its surface. This direct contact between the magnetic stir bar and the mixed liquid may lead to particulate contamination or corrosion from the mixed liquid. Utility Model Content
[0004] The purpose of this invention is to provide a magnetic levitation dynamic mixing device and mixing system to solve the technical problems of contact wear and particulate pollution caused by magnetic stirring in the prior art.
[0005] The magnetic levitation dynamic mixing device provided by this utility model includes: a magnetic levitation motor and a mixer, wherein the magnetic levitation motor includes a magnetic levitation stator and a magnetic levitation rotor;
[0006] The mixer includes a housing and a stirring impeller. The housing has a mixing chamber, an inlet and an outlet communicating with the mixing chamber. The stirring impeller is located inside the mixing chamber. The magnetically levitated rotor is embedded in the stirring impeller. The magnetically levitated stator generates a magnetic field to drive the magnetically levitated rotor and the stirring impeller to levitate and rotate within the mixing chamber in a non-contact manner.
[0007] Furthermore, the stirring impeller includes a stirring body and multiple stirring blades, the magnetic levitation rotor is embedded in the stirring body, and the multiple stirring blades are connected to one end of the stirring body.
[0008] Furthermore, the magnetically levitated stator includes multiple stator teeth, multiple control windings, and a magnetic ring. The stator teeth are magnetically connected to the magnetic ring, and the control windings are sleeved on the stator teeth.
[0009] Furthermore, the outer casing has a rotor engagement portion at one end facing the magnetic levitation stator, and the magnetic levitation stator has a stator engagement portion that mates with the rotor engagement portion.
[0010] Furthermore, the rotor engagement portion includes a protrusion protruding toward the magnetically levitated stator, the protrusion having a groove communicating with the mixing cavity, the magnetically levitated rotor being located within the groove, and the magnetically levitated rotor being limited by the rotor engagement portion; the stator engagement portion includes a recess that mates with the protrusion.
[0011] Furthermore, the outer wall of the housing is provided with an inlet connector communicating with the liquid inlet, and / or the outer wall of the housing is provided with an outlet connector communicating with the liquid outlet.
[0012] Furthermore, the outer shell wall is provided with a temperature control cavity, a temperature control inlet, and a temperature control outlet, and the temperature control inlet and the temperature control outlet are both connected to the temperature control cavity.
[0013] Furthermore, the outer casing includes a mixer body and an upper shell, the mixer body and the upper shell cooperate to form the mixing chamber, and the temperature control chamber is disposed in the mixer body and / or the upper shell.
[0014] Furthermore, the outer casing also includes a bottom cover, the temperature control cavity is disposed on the side wall of the mixer body, the opening of the temperature control cavity faces the magnetic levitation stator, and the bottom cover seals the opening of the temperature control cavity.
[0015] Furthermore, the temperature control cavity is annular around the mixing cavity; the temperature control cavity has clearance steps at the liquid inlet and the liquid outlet;
[0016] And / or, the outer wall of the housing is provided with a first temperature control connector communicating with the temperature control inlet and a second temperature control connector communicating with the temperature control outlet.
[0017] Furthermore, the housing is provided with a sensor connector that communicates with the mixing chamber, and a temperature sensor is provided inside the sensor connector.
[0018] Furthermore, the magnetic levitation dynamic mixing device also includes a viewing window assembly, the outer shell is provided with an observation port, and the viewing window assembly is installed in the observation port.
[0019] Furthermore, the viewing window assembly includes a first viewing window and a second viewing window, both of which are sealed and installed in the observation port, with the first viewing window located between the mixing chamber and the second viewing window.
[0020] The beneficial effects of this utility model are as follows:
[0021] The magnetic levitation dynamic mixing device provided by this utility model can be installed between liquid conveying pipelines. The liquid to be mixed flows into the mixing chamber from the inlet and flows out from the outlet. The magnetic levitation stator drives the magnetic levitation rotor and stirring impeller to levitate and rotate. The stirring impeller stirs the liquid flowing through the mixing chamber, thus mixing the liquid. During the stirring process, the stirring impeller does not come into contact with the inner wall of the mixing chamber, preventing the generation of wear particles due to friction between the stirring impeller and the inner wall of the mixing chamber, thereby preventing particulate contamination.
[0022] Secondly, the mixing system provided by this utility model includes a feed pipe, a discharge pipe, and the aforementioned magnetic levitation dynamic mixing device. The feed pipe is connected to the liquid inlet of the magnetic levitation dynamic mixing device, and the discharge pipe is connected to the liquid outlet of the magnetic levitation dynamic mixing device.
[0023] The hybrid system described above has the same advantages over related technologies as the magnetic levitation dynamic hybrid device mentioned above, and will not be repeated here. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0025] Figure 1 Schematic diagram of the structure of the magnetic levitation dynamic mixing device provided in the embodiment of this utility model Figure 1 ;
[0026] Figure 2 Schematic diagram of the structure of the magnetic levitation dynamic mixing device provided in the embodiment of this utility model Figure 2 ;
[0027] Figure 3 for Figure 2 Cross-sectional view along the AA direction;
[0028] Figure 4 A schematic diagram of the mixer in the magnetic levitation dynamic mixing device provided in this embodiment of the utility model. Figure 1 ;
[0029] Figure 5 A schematic diagram of the mixer in the magnetic levitation dynamic mixing device provided in this embodiment of the utility model. Figure 2 ;
[0030] Figure 6 A schematic diagram of the mixer in the magnetic levitation dynamic mixing device provided in this embodiment of the utility model. Figure 3 ;
[0031] Figure 7 for Figure 6 Cross-sectional view along the BB direction;
[0032] Figure 8 Schematic diagram of the mixer body in the magnetic levitation dynamic mixing device provided in this embodiment of the utility model Figure 1 ;
[0033] Figure 9 Schematic diagram of the mixer body in the magnetic levitation dynamic mixing device provided in this embodiment of the utility model Figure 2 ;
[0034] Figure 10 This is a schematic diagram showing the connection between the clamp and the second window in the magnetic levitation dynamic mixing device provided in this embodiment of the utility model.
[0035] Icons: 100-Magnetic levitation motor; 110-Magnetic levitation stator; 111-Stator teeth; 112-Control winding; 113-Magnetic guide ring; 120-Magnetic levitation rotor; 130-Stator joint; 140-Housing; 200-Mixer; 210-Outer shell; 211-Mixer body; 2111-First receiving groove; 212-Upper shell; 2121-Observation channel; 2122-Flange; 213-Bottom cover; 214-First sealing ring; 215-Clamp; 22 0-Agitator impeller; 230-Mixing chamber; 231-Inlet connector; 232-Outlet connector; 233-Sensor connector; 240-Rotor joint; 250-Temperature control chamber; 251-First temperature control connector; 252-Second temperature control connector; 253-Avoidance step; 300-Viewing window assembly; 310-First viewing window; 311-Second sealing ring; 312-Third sealing ring; 320-Second viewing window; 330-Scraper; 340-Knob; 350-Fourth sealing ring. Detailed Implementation
[0036] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0037] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0039] Example 1
[0040] like Figure 1 , Figure 2 and Figure 3 As shown, the magnetic levitation dynamic mixing device provided in this embodiment of the present invention includes: a magnetic levitation motor 100 and a mixer 200. The magnetic levitation motor 100 includes a magnetic levitation stator 110 and a magnetic levitation rotor 120. The mixer 200 includes a housing 210 and a stirring impeller 220. The housing 210 is provided with a mixing chamber 230, and an inlet and an outlet communicating with the mixing chamber 230. The stirring impeller 220 is disposed in the mixing chamber 230. The magnetic levitation rotor 120 is embedded in the stirring impeller 220. The magnetic levitation stator 110 generates a magnetic field to drive the magnetic levitation rotor 120 and the stirring impeller 220 to levitate and rotate in the mixing chamber 230 in a non-contact manner.
[0041] The magnetically levitated rotor can be a permanent magnet rotor, a short-circuit cage rotor, or a reluctance rotor. The stirring impeller 220 is made of a non-metallic material, such as PEEK (polyether ether ketone). Part of the structure of the stirring impeller 220 is wrapped around the outside of the magnetically levitated rotor 120, acting as a protective sleeve. The magnetic field generated by the magnetically levitated stator 110 drives the magnetically levitated rotor 120 to levitate and rotate, and the magnetically levitated rotor 120 drives the stirring impeller 220 to levitate and rotate.
[0042] The magnetic levitation dynamic mixing device provided in this embodiment can be installed between liquid conveying pipelines. The liquid to be mixed flows into the mixing chamber 230 from the inlet and flows out from the outlet. The magnetic levitation stator 110 drives the magnetic levitation rotor 120 and the stirring impeller 220 to levitate and rotate. The stirring impeller 220 stirs the liquid flowing through the mixing chamber 230, thus mixing the liquid. During the stirring process, the stirring impeller 220 does not contact the inner wall of the mixing chamber 230, preventing the generation of wear particles due to friction between the stirring impeller 220 and the inner wall of the mixing chamber 230, thereby preventing particle contamination.
[0043] The stirring impeller 220 includes a stirring body and multiple stirring blades. The magnetic levitation rotor 120 is embedded within the stirring body, and the multiple stirring blades are connected to one end of the stirring body. Specifically, the stirring body encloses the magnetic levitation rotor 120, and the cross-section of the outer peripheral wall of the stirring body is circular. The multiple stirring blades are connected to the end of the stirring body away from the magnetic levitation stator 110 and are distributed at intervals along the circumference of the stirring body. The magnetic levitation stator 110 drives the magnetic levitation rotor 120 and the stirring impeller 220 to rotate, and the multiple stirring blades agitate the liquid flowing through the mixing chamber 230, thereby achieving mixing of the liquid flowing through the mixing chamber 230.
[0044] like Figure 3 As shown, the magnetic levitation stator 110 includes multiple stator teeth 111, multiple control windings 112, and a magnetic ring 113. The stator teeth 111 are magnetically connected to the magnetic ring 113, and the control windings 112 are sleeved on the stator teeth 111. The stator teeth 111 are L-shaped, and the longitudinal arms of the multiple stator teeth 111 are magnetically connected to the magnetic ring 113. The control windings 112 are sleeved on the longitudinal arms of the stator teeth 111, and the transverse arms (stator poles) of the multiple stator teeth 111 form a concave cavity. In one embodiment, each stator tooth 111 is provided with two winding coils. Both winding coils can be concentrated windings, or one winding coil can be a concentrated winding and the other winding coil can be a distributed winding. The two winding coils on the stator tooth 111 are wound together, with one winding coil used for rotation control and the other winding coil used for levitation control, to form a dual-winding structure of the magnetic levitation motor 100. In another embodiment, a winding coil is provided on each stator tooth 111. The winding coil is a concentrated winding and is used for both rotation control and levitation control to form a single winding structure of the magnetic levitation motor 100.
[0045] According to the embodiments of this disclosure, the magnetic levitation motor 100 is not limited to the structural form of the magnetic levitation stator 110. For example, the magnetic levitation stator 110 can be a magnetic levitation stator structure with a single-line stator tooth formed by connecting the outer ends of multiple single-line stator teeth with a magnetic guide ring (stator yoke), or it can be a magnetic levitation stator structure with an L-shaped stator tooth formed by connecting the longitudinal portions of multiple L-shaped stator teeth with a magnetic guide ring. This embodiment does not impose specific limitations on the installation structure of the magnetic levitation stator 110 within the housing 140.
[0046] The magnetic levitation motor 100 typically also includes a housing 140 and a potting material filled between the magnetic levitation stator 110 and the housing 140. The potting material includes, but is not limited to, epoxy resin, silicone, polyurethane, etc.
[0047] The magnetically levitated rotor 120 is configured as a permanent magnet rotor, and a permanent magnet rotor with one pair of magnetic poles generates a magnetic field distributed in a cosine manner. The permanent magnet rotor includes an odd number of magnetic pole pairs, each magnetic pole pair including two magnetic poles of opposite polarity, the two magnetic poles being arranged radially along the permanent magnet rotor; or, the permanent magnet rotor includes an even number of magnetic pole pairs, each magnetic pole pair including two magnetic poles of the same polarity, the two magnetic poles being arranged radially along the permanent magnet rotor.
[0048] like Figure 2 , Figure 4 , Figure 5 and Figure 7 As shown, the outer casing 210 has a rotor engagement portion 240 at one end facing the magnetic levitation stator 110, and the magnetic levitation stator 110 has a stator engagement portion 130 that mates with the rotor engagement portion 240. By engaging the rotor engagement portion 240 and the stator engagement portion 130, the configuration of the magnetic levitation motor 100 as an inner rotor type or an outer rotor type can be achieved.
[0049] When the magnetic levitation motor 100 is an internal rotor type magnetic levitation motor, such as Figure 4 and Figure 7As shown, the rotor engagement portion 240 includes a protrusion protruding towards the magnetic levitation stator 110. The protrusion has a groove communicating with the mixing chamber 230. The magnetic levitation rotor 120 is located in the groove and is limited by the rotor engagement portion 240. The stator engagement portion 130 includes a recess that mates with the protrusion. Specifically, the end face of the outer shell 210 opposite to the magnetic levitation stator 110 protrudes outward to form a protrusion, and the cross-section of the outer peripheral wall of the protrusion is circular. A groove with a circular cross-section is provided inside the protrusion. Parts of the magnetic levitation rotor 120 and the stirring body are located in the groove, so that the magnetic levitation rotor 120 and the stirring body are limited by the groove. The end face of the magnetic levitation stator 110 opposite to the outer shell 210 is recessed inward to form a recess, and the shape and size of the recess match the protrusion. When the outer shell 210 is connected to the magnetic levitation stator 110, the protrusion on the outer shell 210 extends into the recess of the magnetic levitation stator 110, forming an internal rotor magnetic levitation motor.
[0050] When the magnetic levitation motor 100 is an external rotor type magnetic levitation motor, the rotor joint 240 includes a recessed portion that is recessed into the housing 210, and the stator joint 130 includes a protrusion that mates with the recessed portion. Specifically, the end face of the housing 210 opposite to the magnetic levitation stator 110 is recessed to form a recessed portion. The recessed portion is hollow and cylindrical within the mixing chamber 230, and the stirring body is annular and fitted around the outer periphery of the recessed portion. The magnetic levitation stator 110 protrudes towards the housing 210 to form a protrusion, the shape and size of which match the recessed portion. When the housing 210 is connected to the magnetic levitation stator 110, the protrusion on the magnetic levitation stator 110 extends into the recessed portion of the housing 210, thus forming an external rotor type magnetic levitation motor.
[0051] The inlet and outlet can be located on the top or side wall of the housing 210. In one embodiment, both the inlet and outlet are located on the side wall of the housing 210, and multiple inlets are provided, specifically two or three, etc. The mixing chamber 230 has a circular cross-section, and one outlet and multiple inlets are distributed circumferentially around the mixing chamber 230. Different liquids to be mixed enter the mixing chamber 230 through their corresponding inlets. As they flow through the mixing chamber 230, the impeller 220 agitates the various liquids, and the mixed liquid flows out through the outlet.
[0052] like Figures 4 to 9As shown, the outer wall of the housing 210 is provided with an inlet connector 231 communicating with the liquid inlet, and / or, the outer wall of the housing 210 is provided with an outlet connector 232 communicating with the liquid outlet. At least one of the liquid inlet and outlet is provided with a connector; taking the example of both being provided with connectors, specifically, both the inlet connector 231 and the outlet connector 232 are tubular and are fixedly connected to the housing 210 by welding, bonding, or integral molding. A chuck is provided at the end of the inlet connector 231 away from the housing 210, and at the end of the outlet connector 232 away from the housing 210. The chuck has a fastening function, clamping and fixing the pipe, improving the stability of the connection between the inlet connector 231 and the outlet connector 232 and the pipe, preventing liquid leakage at the connection point, and facilitating quick and easy assembly and disassembly.
[0053] like Figure 7 and Figure 8 As shown, the outer shell 210 has a temperature control cavity 250, a temperature control inlet, and a temperature control outlet on its shell wall. Both the temperature control inlet and outlet are connected to the temperature control cavity 250. The temperature control cavity 250 is located at least one of the top wall, bottom wall, and side wall of the mixing cavity 230. The temperature control cavity 250 is integrally formed with the outer shell 210, without increasing the space occupied by the mixer 200. The temperature control cavity 250 can be connected to an external temperature control medium circulation device through the temperature control inlet and outlet. The temperature control medium circulation device allows the temperature control medium to flow into the temperature control cavity 250 through the temperature control inlet and out through the temperature control outlet. For example, in the organic synthesis of intermediates in chemical pharmaceuticals, the mixed liquid will react and generate heat during the mixing process. In this case, it is necessary to cool the mixer. Introducing a refrigerant into the temperature control cavity 250 can cool the mixer. Similarly, when the mixed liquid needs to be kept at a certain temperature, introducing a medium with a set temperature into the temperature control cavity 250 can maintain the temperature.
[0054] like Figure 7 As shown, the outer casing 210 includes a mixer body 211 and an upper casing 212. The mixer body 211 and the upper casing 212 cooperate to form a mixing chamber 230. A temperature control chamber 250 is disposed in the mixer body 211 and / or the upper casing 212. The mixer body 211 is cylindrical and has an opening groove inside. The opening of the opening groove is located in the mixer body 211. Figure 7 and Figure 9 As shown on the upper surface, the upper shell 212 covers the opening of the slot and is detachably connected to the mixer body 211 by bolts, facilitating the removal of the upper shell 212 for cleaning the interior of the mixer body 211. The mixer body 211 is detachably connected to the housing 140 of the magnetic levitation stator 110 by bolts, facilitating the replacement and maintenance of the mixer 200. A temperature control chamber 250 is disposed in at least one of the mixer body 211 and the upper shell 212, with a temperature control inlet and outlet correspondingly disposed in either the mixer body 211 or the upper shell 212.
[0055] like Figure 7 As shown, the outer casing 210 also includes a bottom cover 213. A temperature control cavity 250 is disposed on the side wall of the mixer body 211, with the opening of the temperature control cavity 250 facing the magnetic levitation stator 110. The bottom cover 213 seals the opening of the temperature control cavity 250. The temperature control cavity 250 is arranged around the mixing cavity 230, and the opening of the temperature control cavity 250 is located on the bottom wall of the mixer body 211, which facilitates the machining of the temperature control cavity 250 on the mixer body 211. The annular bottom cover 213 covers the opening of the temperature control cavity 250 and is sealed to the mixer body 211, which can be achieved by bonding, welding, or fastener connection.
[0056] When the mixer body 211 is made of metal, the bottom cover 213 can be welded to the mixer body 211 in a sealed connection without the need for a sealing ring. Therefore, the temperature control chamber 250 can be designed to be larger to provide better temperature control.
[0057] When the mixer body 211 is made of non-metallic material, the bottom cover 213 is fixedly connected to the mixer body 211 by multiple bolts, and a sealing ring is provided between the bottom cover 213 and the mixer body 211 for sealing. The specific sealing structure is as follows: Figure 7 As shown, the bottom wall of the mixer body 211 is provided with two annular first sealing grooves, and the mixing chamber 230 is located between the two first sealing grooves. Each of the two first sealing grooves is provided with a first sealing ring 214, which seals the inner and outer sides of the mixing chamber 230. When the mixer body 211 is made of non-metallic materials, PEEK (polyetheretherketone) material can be selected, which has good structural strength and does not affect the use of eddy current sensors to detect the displacement of the magnetic levitation rotor 120 by the magnetic levitation bearingless motor.
[0058] like Figure 8As shown, the temperature control chamber 250 is annular, surrounding the mixing chamber 230. The temperature control chamber 250 has clearance steps 253 at its inlet and outlet. The temperature control chamber 250 surrounds the mixing chamber 230. The inlet, outlet, temperature control inlet, and temperature control outlet are all located on the side wall of the mixer body 211. The diameters of the inlet and outlet are larger than the diameters of the temperature control inlet and outlet. The temperature control inlet and outlet penetrate the side wall of the temperature control chamber 250 and communicate with it. Clearance steps 253 are provided within the temperature control chamber 250 at positions corresponding to the inlet and outlet. There is a gap between the clearance steps 253 and the bottom cover 213 to avoid affecting the flow of the temperature-controlled medium within the temperature control chamber 250. Both the inlet and outlet are connected to the mixing chamber 230 through the corresponding avoidance step 253 and the side wall of the mixing chamber 230. The avoidance step 253 is designed so that the annular temperature control chamber 250 avoids the inlet and outlet when passing through them, thereby maximizing the flow area of the temperature control chamber 250 without affecting the design of the inlet and outlet.
[0059] like Figures 4 to 9 As shown, the outer wall of the housing 210 is provided with a first temperature control connector 251 communicating with the temperature control inlet, and a second temperature control connector 252 communicating with the temperature control outlet. Both the temperature control inlet and outlet are located on the side wall of the mixer body 211. Both the first and second temperature control connectors 251 and 252 are tubular and are fixedly connected to the mixer body 211 by welding, bonding, or integral molding. A chuck is provided at the end of the first temperature control connector 251 away from the mixer body 211, and at the end of the second temperature control connector 252 away from the mixer body 211. The chuck has a clamping function, which can clamp and fix the pipes, improving the stability of the connection between the first and second temperature control connectors 251 and the pipes, preventing leakage of the temperature control medium at the connection point, and facilitating disassembly.
[0060] When the temperature control chamber 250 is annular, a temperature control inlet and a temperature control outlet are provided on the side wall of the mixer body 211. The temperature control inlet and outlet are symmetrically arranged about the center of the temperature control chamber 250, dividing the temperature control chamber 250 into two arc-shaped branches of equal length. After the temperature control medium enters the temperature control chamber 250 from the temperature control inlet, it flows along the two arc-shaped branches to the temperature control outlet and then flows out from the temperature control outlet. The two arc-shaped branches are of equal length, which reasonably distributes the flow distance of the temperature control medium in the two arc-shaped branches, avoiding one arc-shaped branch being too long, causing the temperature control effect to deteriorate in the latter half of the flow of the temperature control medium, while the other arc-shaped branch being too short, failing to fully utilize the temperature control medium.
[0061] In addition to being annular, the temperature control chamber 250 may also include multiple sets of arc-shaped flow channels. An arc-shaped flow channel, an inlet, and an outlet are provided between adjacent inlets and outlets, as well as between adjacent inlets. Each set of arc-shaped flow channels includes one arc-shaped flow channel, with the inlet connected to one end and the outlet connected to the other end. Alternatively, each set of arc-shaped flow channels may include two arc-shaped flow channels distributed along the axis of the outer shell 210. Adjacent arc-shaped flow channels are connected by a transition channel. The inlet is connected to one of the arc-shaped flow channels, and the outlet is connected to the other arc-shaped flow channel. The inlet and outlet are located at the same end of the two arc-shaped flow channels. The temperature control medium enters the arc-shaped flow channel through the inlet and flows out through the outlet. Multiple sets of arc-shaped flow channels are distributed around the mixing chamber 230, allowing for temperature control of the liquid within the mixing chamber 230.
[0062] The outer casing 210 is provided with a sensor connector 233 communicating with the mixing chamber 230, and a temperature sensor is installed inside the sensor connector 233. The sensor connector 233 is tubular and is fixed to the side wall of the mixer body 211 by welding or integral molding. The mixer body 211 is provided with a channel communicating with the sensor connector 233 and the mixing chamber 230. The temperature sensor is located inside the sensor connector 233 and is used to detect the temperature information of the mixed liquid inside the mixer body 211 to achieve temperature control.
[0063] like Figure 7 As shown, the magnetic levitation dynamic mixing device also includes a viewing window assembly 300. The outer shell 210 has an observation port, and the viewing window assembly 300 is mounted on the observation port. Specifically, the observation window is located on the upper shell 212, and the viewing window assembly 300 is sealed and fixed to the observation window, allowing observation of the liquid mixing or reaction state within the mixing chamber 230. In addition to being located on the upper shell 212, the observation window can also be located on the side wall of the mixer body 211.
[0064] When the mixer 200 is used to mix room temperature liquids, the window assembly 300 can be configured to include a window.
[0065] When the mixer 200 is used to mix cryogenic liquids, the viewing window assembly 300 can be configured to include a first viewing window 310 and a second viewing window 320. Both the first viewing window 310 and the second viewing window 320 are sealed and installed in the observation port, and the first viewing window 310 is located between the mixing chamber 230 and the second viewing window 320. Figure 7As shown, the upper shell 212 is provided with an observation channel 2121. A first viewing window 310 is located at one end of the observation channel 2121 and is sandwiched between the upper shell 212 and the mixer body 211. A flange 2122 is provided at the end of the upper shell 2121 away from the first viewing window 310. A second viewing window 320 is located at the end of the observation channel 2121 away from the first viewing window 310 and is fixed to the flange 2122 on the top of the upper shell 212 by a clamp 215. A hollow cavity is formed between the first viewing window 310 and the second viewing window 320. The hollow cavity serves to prevent the external air from transferring heat to the first viewing window 310, thus preventing frost from forming on the first viewing window 310 due to the large temperature difference on both sides of the first viewing window 310, which would affect observation.
[0066] like Figure 10 As shown, the window assembly 300 also includes a scraper 330, which abuts against the inner surface of the second window 320, wherein the inner surface of the second window 320 refers to the surface of the second window 320 facing the first window 310. A rotating shaft is fixedly connected to the scraper 330, passing through the center of the second window 320 and the first window 310, and is fixedly connected to an external knob 340. Rotating the knob 340 causes the scraper 330 to rotate around the rotating shaft, thereby defrosting the second window 320.
[0067] A sealing structure is also provided between the first viewing window 310 and the mixer body 211 and the upper shell 212. Both the mixer body 211 and the upper shell 212 are provided with receiving grooves for accommodating the edge of the first viewing window 310. The groove on the mixer body 211 is the first receiving groove 2111, and the groove on the upper shell 212 is the second receiving groove. After the upper shell 212 is connected to the mixer body 211, the groove wall of the first receiving groove 2111 and the groove wall of the second receiving groove cooperate to clamp the first viewing window 310. Figure 7 As shown, the first receiving groove 2111 has a second sealing groove on its wall where it contacts the lower end face of the first viewing window 310. A second sealing ring 311 is installed in the second sealing groove to prevent liquid leakage at the connection point between the first viewing window 310 and the mixer body 211. The second receiving groove has a third sealing groove on its wall where it contacts the upper end face of the first viewing window 310. A third sealing ring 312 is installed in the third sealing groove to prevent external air from entering the observation channel 2121. Furthermore, a fourth sealing ring 350 is provided between the flange 2122 and the clamp 215 for sealing and heat insulation.
[0068] Example 2
[0069] The mixing system provided in this embodiment of the utility model includes a feed pipe, a discharge pipe, and the aforementioned magnetic levitation dynamic mixing device. The feed pipe is connected to the liquid inlet of the magnetic levitation dynamic mixing device, and the discharge pipe is connected to the liquid outlet of the magnetic levitation dynamic mixing device.
[0070] Specifically, the feed pipe is fixedly connected to the inlet connector 231 at the liquid inlet, and the outlet pipe is fixedly connected to the outlet connector 232 at the liquid outlet. Under the action of the delivery pump, the liquid to be mixed enters the mixing chamber 230 through the corresponding feed pipe and liquid inlet, flows out from the liquid outlet, and then flows to the designated container through the discharge pipe. The magnetic levitation stator 110 drives the magnetic levitation rotor 120 and the stirring impeller 220 to levitate and rotate without contact with the inner wall of the mixing chamber 230. The stirring impeller 220 stirs the liquid flowing through the mixing chamber 230, thus mixing the liquid. During the stirring process, the stirring impeller 220 does not contact the inner wall of the mixing chamber 230, preventing the generation of wear particles due to friction between the stirring impeller 220 and the inner wall of the mixing chamber 230, thereby preventing particle contamination.
[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A magnetically levitated dynamic mixing device, characterized in that, include: A magnetic levitation motor (100) and a mixer (200), wherein the magnetic levitation motor (100) includes a magnetic levitation stator (110) and a magnetic levitation rotor (120). The mixer (200) includes a housing (210) and a stirring impeller (220). The housing (210) is provided with a mixing chamber (230) and an inlet and an outlet communicating with the mixing chamber (230). The stirring impeller (220) is located in the mixing chamber (230). The magnetic levitation rotor (120) is embedded in the stirring impeller (220). The magnetic levitation stator (110) generates a magnetic field to drive the magnetic levitation rotor (120) and the stirring impeller (220) to levitate and rotate in the mixing chamber (230) in a non-contact manner.
2. The magnetic levitation dynamic mixing device according to claim 1, characterized in that, The stirring impeller (220) includes a stirring body and multiple stirring blades. The magnetic levitation rotor (120) is embedded in the stirring body, and the multiple stirring blades are connected to one end of the stirring body.
3. The magnetic levitation dynamic mixing device according to claim 1, characterized in that, The magnetically levitated stator (110) includes multiple stator teeth (111), multiple control windings (112), and a magnetic ring (113). The stator teeth (111) are magnetically connected to the magnetic ring (113), and the control windings (112) are sleeved on the stator teeth (111).
4. The magnetic levitation dynamic mixing device according to claim 1, characterized in that, The outer casing (210) has a rotor engagement portion (240) at one end facing the magnetic levitation stator (110), and the magnetic levitation stator (110) has a stator engagement portion (130) that cooperates with the rotor engagement portion (240).
5. The magnetic levitation dynamic mixing device according to claim 4, characterized in that, The rotor engagement portion (240) includes a protrusion protruding toward the magnetic levitation stator (110), the protrusion having a groove communicating with the mixing chamber (230), the magnetic levitation rotor (120) being located in the groove, and the magnetic levitation rotor (120) being limited by the rotor engagement portion (240); the stator engagement portion (130) includes a recess that mates with the protrusion.
6. The magnetic levitation dynamic mixing device according to claim 1, characterized in that, The outer wall of the housing (210) is provided with an inlet connector (231) communicating with the liquid inlet, and / or the outer wall of the housing (210) is provided with an outlet connector (232) communicating with the liquid outlet.
7. The magnetic levitation dynamic mixing device according to any one of claims 1-6, characterized in that, The outer shell (210) has a temperature control cavity (250), a temperature control inlet and a temperature control outlet on its shell wall, and the temperature control inlet and the temperature control outlet are both connected to the temperature control cavity (250).
8. The magnetic levitation dynamic mixing device according to claim 7, characterized in that, The outer casing (210) includes a mixer body (211) and an upper shell (212). The mixer body (211) and the upper shell (212) cooperate to form the mixing chamber (230). The temperature control chamber (250) is located in the mixer body (211) and / or the upper shell (212).
9. The magnetic levitation dynamic mixing device according to claim 8, characterized in that, The outer casing (210) also includes a bottom cover (213), the temperature control cavity (250) is located on the side wall of the mixer body (211), the opening of the temperature control cavity (250) faces the magnetic levitation stator (110), and the bottom cover (213) seals the opening of the temperature control cavity (250).
10. The magnetic levitation dynamic mixing device according to claim 7, characterized in that, The temperature control chamber (250) is annular around the mixing chamber (230); the temperature control chamber (250) has clearance steps (253) at the inlet and outlet. And / or, the outer wall of the housing (210) is provided with a first temperature control connector (251) communicating with the temperature control inlet and a second temperature control connector (252) communicating with the temperature control outlet.
11. The magnetic levitation dynamic mixing device according to any one of claims 1-6, characterized in that, The housing (210) is provided with a sensor connector (233) communicating with the mixing chamber (230), and a temperature sensor is provided inside the sensor connector (233).
12. The magnetic levitation dynamic mixing device according to any one of claims 1-6, characterized in that, The magnetic levitation dynamic mixing device also includes a viewing window assembly (300), and the housing (210) is provided with an observation port, and the viewing window assembly (300) is installed in the observation port.
13. The magnetic levitation dynamic mixing device according to claim 12, characterized in that, The viewing window assembly (300) includes a first viewing window (310) and a second viewing window (320), both of which are sealed and installed in the observation port, and the first viewing window (310) is located between the mixing chamber (230) and the second viewing window (320).
14. The magnetic levitation dynamic mixing device according to claim 13, characterized in that, The window assembly (300) further includes a scraper (330) that abuts against the inner surface of the second window (320) and is rotatably connected to the second window (320) via a pivot.
15. A hybrid system, characterized in that, The device includes a feed pipe, a discharge pipe, and the magnetic levitation dynamic mixing device according to any one of claims 1-14, wherein the feed pipe is connected to the liquid inlet of the magnetic levitation dynamic mixing device, and the discharge pipe is connected to the liquid outlet of the magnetic levitation dynamic mixing device.