CN113262694B - Anti-disturbance and wear-resistant magnetic stirrer and use method thereof - Google Patents
Anti-disturbance and wear-resistant magnetic stirrer and use method thereof Download PDFInfo
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- CN113262694B CN113262694B CN202110590178.6A CN202110590178A CN113262694B CN 113262694 B CN113262694 B CN 113262694B CN 202110590178 A CN202110590178 A CN 202110590178A CN 113262694 B CN113262694 B CN 113262694B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/45—Magnetic mixers; Mixers with magnetically driven stirrers
- B01F33/453—Magnetic mixers; Mixers with magnetically driven stirrers using supported or suspended stirring elements
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Abstract
The invention discloses an anti-disturbance and wear-resistant magnetic stirrer in the field of magnetic stirring and a use method thereof, wherein the magnetic stirrer comprises a rotor main body, a first ceramic rotating shaft, a plastic bearing, a bearing protection shell, a flexible base and a magnetic field reconstruction module; the using method comprises the following steps: preparing a rotor body; preparing a flexible base, and mounting a bearing protection shell on the flexible base; ensuring that the magnetic stirrer is placed at the bottom of a container for holding the solution to be stirred in a forward horizontal direction; the magnetic field reconstruction module is arranged between a container for containing the solution to be stirred and a working platform of the magnetic stirrer; the magnetic stirrer is adjusted to enable the rotor main body to rotate stably. The invention can effectively reduce or avoid the phenomenon that the rotor main body stops rotating or jumps, and simultaneously avoid the abrasion of the bottom shape of the container to the shell of the rotor main body.
Description
Technical Field
The invention belongs to the field of magnetic stirring, and particularly relates to an anti-disturbance and wear-resistant magnetic stirrer and a use method thereof.
Background
In the prior art, magnetic stirrers are widely used in various magnetic stirrers as stirring devices for direct contact with reagents. The magnetic stirrer utilizes the coupling action of magnetic fields, and realizes the rotation of the magnetic stirrer by the coupling of the magnetic stirrer and the moving magnetic field in the magnetic stirrer, thereby achieving the stirring action on the reagent or the reaction solvent. Some reagents or reaction solvents require that they be in a closed environment while being stirred, so that a mechanical stirrer with a stirring head connected with the stirrer cannot be used, and a magnetic stirrer with separable two parts must be used.
The following problems exist in stirring the reagents or reaction solvents: the shape of the bottom of the container for containing the reagent or the reaction solvent often causes disturbance to the movement of the magnetic stirrer, friction and collision between the magnetic stirrer and the container often cause the movement of the magnetic stirrer to stop or jump, and the coupling of the magnetic stirrer and a moving magnetic field in the magnetic stirrer is destroyed, so that the experimental precision is influenced; conventional magnetic stirrer bar designs can cause the bottom of the vessel containing the reagents or reaction solvents to wear out the magnetic stirrer housing during stirring of the reagents or reaction solvents.
Disclosure of Invention
The invention aims to provide an anti-disturbance and wear-resistant magnetic stirrer, which can effectively reduce or avoid the phenomenon that a rotor main body stops rotating or jumps in the use process, and simultaneously avoid the abrasion of the bottom shape of a container to the shell of the rotor main body.
The purpose of the invention is realized in the following way: an anti-disturbance and wear-resistant magnetic stirrer comprises a rotor main body, a first ceramic rotating shaft, a plastic bearing, a bearing protection shell, a flexible base and a magnetic field reconstruction module; the rotor main body comprises a plastic shell, a magnet is arranged in the plastic shell, a rotating shaft mounting hole is formed in the center of the bottom of the plastic shell, the first ceramic rotating shaft is vertically arranged, and the upper end of the first ceramic rotating shaft is correspondingly inserted into the rotating shaft mounting hole and in interference fit with the rotating shaft mounting hole; the plastic bearing comprises a coaxial inner ring body and an outer ring body, a plurality of glass balls are uniformly distributed between the inner ring body and the outer ring body along the circumferential direction, the plastic bearing is arranged inside a bearing protection shell, the outer ring body of the plastic bearing is in interference fit with the circumferential inner wall of the bearing protection shell, an upper boss and a lower boss are respectively arranged at the centers of the upper end and the lower end of the bearing protection shell, a rotating shaft hole communicated with the inside of the bearing protection shell is formed in the center of the upper boss, the lower end of a first ceramic rotating shaft is arranged in a matched mode with the inner ring body of the plastic bearing, the lower end of the first ceramic rotating shaft is connected with the inner ring body of the plastic bearing in an installation mode, the shaft body of the first ceramic rotating shaft axially penetrates through the rotating shaft hole of the upper boss, a shell mounting hole is formed in the center of the flexible base, and the lower boss of the bearing protection shell is matched with the lower boss of the bearing protection shell to be inserted into the shell mounting hole.
According to the invention, the rotor main body is rotatably supported in the plastic bearing in the bearing protection shell, the diameter of the lower end of the first ceramic rotating shaft is larger than that of the upper end of the first ceramic rotating shaft, the diameter of the upper end of the first ceramic rotating shaft is equal to that of the shaft body, and the bearing protection shell is fixed on the flexible base, so that the rotor main body of the magnetic stirrer can stably rotate in the container; the flexible base provides steady support to the rotor main part to through kneading the flexible base can guarantee that the magnetic stirring piece is whole can be through the opening entering container inside of container smoothly.
Compared with the prior art, the invention has the beneficial effects that: the anti-disturbance wear-resistant low-cost magnetic stirrer for the laboratory is manufactured by using simple and economical parts, and the phenomenon that the rotor main body stops rotating or jumps in the use process can be effectively reduced; the device has high applicability and is suitable for the traditional magnetic stirrer; the device has a high airtight design, the precise parts in the device are not easy to be corroded and polluted by reagents or reaction solvents in the container, and the service life is long; the device is from taking magnetic field reconstruction module, and magnetic force of magnetic stirrer work platform is weaker, when unable constraint magnetic force rotor, the accessible magnetic field reconstruction ware builds a new strong magnetic field between container and the magnetic stirrer work platform of splendid attire reagent or reaction solvent, ensures that the rotor main part can smoothly smooth steady rotation.
As a further improvement of the invention, the magnetic field reconstruction module comprises a second ceramic rotating shaft, a magnet support, a reverse magnet group and a reconstruction protecting shell, wherein the reverse magnet group comprises two powerful magnets with opposite magnetic pole directions, the left end and the right end of the magnet support are respectively provided with mounting grooves, the two powerful magnets are respectively mounted in the mounting grooves at the left end and the right end of the magnet support, the second ceramic rotating shaft is vertically mounted at the center of the magnet support, the upper end face and the lower end face of the reconstruction protecting shell are respectively provided with a central hole for mounting a bearing, and the upper end and the lower end of the second ceramic rotating shaft on the magnet support are respectively rotatably supported on the bearings corresponding to the central holes. When the magnetic field reconstruction module is placed on the working platform of the magnetic stirrer, the whole body formed by the second ceramic rotating shaft, the magnet support and the reverse magnet group can freely rotate in the reconstruction protecting shell, and a new magnetic field is formed above the magnetic field reconstruction module, so that the rotor main body is ensured to be applied with a strong enough magnetic field to ensure smooth rotation of the rotor main body.
In order to be convenient for install inside component part, the reconfiguration protective housing includes two bilateral symmetry's branch casings, divides the casing to include two semicircular panels that are parallel to each other, is provided with the arc curb plate between the outside of two panels, and two branch casings pass through buckle fixed connection or glue bonding.
As a further improvement of the invention, the outer periphery of the plastic shell and the outer periphery of the bearing protection shell of the rotor main body are both provided with ceramic coatings, the inner ring body and the outer ring body of the plastic bearing are both made of ABS materials, a sealing ring is arranged between the outer periphery of the shaft body of the first ceramic rotating shaft and the inner wall of the rotating shaft hole of the upper boss, or the outer periphery of the shaft body of the first ceramic rotating shaft is provided with external threads; the rotor main body and the bearing protection shell are made of nylon or polytetrafluoroethylene. The ceramic coating has stable chemical characteristics, and can avoid the reaction of the reagent or the reaction solvent in the container; the sealing ring can ensure the tightness of the first ceramic rotating shaft when rotating, and prevent the solution from entering the bearing protection shell; the external threads on the periphery of the shaft body of the first ceramic rotating shaft can discharge the solution outwards; nylon or polytetrafluoroethylene ensures that the strength of the rotor main body and the bearing protection shell is higher; the lower boss of bearing protective housing and casing mounting hole interference fit mutually.
As a further improvement of the invention, the flexible base comprises a round central base body, a plurality of radially distributed flexible reinforcing support bars are arranged at equal intervals along the circumferential direction of the periphery of the central base body, the cross section of each reinforcing support bar is rectangular, and the base is made of rubber or silica gel. The salient points are distributed on the lower sides of the reinforcing support bars, so that the ground grabbing performance can be improved, the stability and the friction coefficient are good, and the sliding of the bottom of a container for containing reagents or reaction solvents can be avoided.
As a further improvement of the invention, the bottom surfaces of the reinforcing support bars and the central seat body are positioned in the same plane, a plurality of groups of circumferential reinforcing components which are radially outwards distributed are arranged on the flexible base, each circumferential reinforcing component comprises a plurality of arc reinforcing connecting bars which are arranged between any two circumferentially adjacent reinforcing support bars, and each reinforcing connecting bar is made of rubber or silica gel. The ground stability of grabbing of flexible base can further be improved to consolidate the connecting strip, avoids flexible base to rock.
As a further improvement of the invention, the bottom surfaces of the reinforcing support bars and the central seat body are positioned in the same plane, a plurality of flexible circular support rings are arranged below each reinforcing support bar, each support ring is coaxially arranged with the central seat body, the outer diameter of each support ring is gradually increased outwards along the radial direction, and each support ring is made of rubber or silica gel. When the bottom of the container containing the solution has irregular protrusions or depressions, the support ring may avoid the protrusions or depressions.
As a further improvement of the invention, the central seat body is horizontally arranged, the bottom surface of the reinforcing support bar and the bottom surface of the central seat body are obliquely arranged, a plurality of support pads are arranged at intervals on the lower side of the reinforcing support bar, and the bottom surfaces of the support pads are positioned in the same plane, and each support pad is made of rubber or silica gel. When the center of the bottom of the container for holding the solution is provided with a bulge or a recess, the bulge or the recess can be avoided by the support pad.
As a further improvement of the invention, the magnet is in a strip shape, the left end and the right end of the plastic shell of the rotor main body are both connected with the movable sleeve I in a sliding manner, the front side and the rear side of the plastic shell of the rotor main body are both fixed with the fixed rod through the buckle, the inward end of the fixed rod is connected with the middle part of the plastic shell of the rotor main body, the outward end of the fixed rod is connected with the movable sleeve II in a sliding manner, the movable sleeve II is perpendicular to the movable sleeve I, the left side and the right side of the movable sleeve II and the movable sleeve I are respectively provided with a plurality of inclined guide fins in a sequential arrangement along the length direction, the guide fins on the left side and the right side of each movable sleeve are symmetrically arranged, and the inclined included angles of the guide fins and the corresponding movable sleeves are 30-45 degrees. When the second movable sleeve and the first movable sleeve retract, the rotor main body can smoothly pass through the bottle mouth of the container due to the shorter length; after the magnetic stirrer enters the bottom of the container, when the rotor main body rotates under the action of a magnetic field, the second movable sleeve and the first movable sleeve extend out, so that the rotation stability can be improved, and the solution is stirred more uniformly; the guide fins enable the rotor main body to rotate more smoothly; the plastic housing of the rotor body may also be S-shaped, with the fixing rod also being adjusted to an arc shape.
The second purpose of the invention is to provide a method for using the anti-disturbance and wear-resistant magnetic stirrer, which can effectively reduce the phenomenon that the rotor main body stops rotating or jumps in the operation process.
The purpose of the invention is realized in the following way: the application method of the anti-disturbance and wear-resistant magnetic stirrer comprises the following steps:
(1) Preparing a rotor main body matched with the solution to be stirred, and mounting the rotor main body on a first ceramic rotating shaft; the solution to be stirred is a reagent or a reaction solvent;
(2) Preparing a flexible base matched with the bottom shape of a container for containing the solution to be stirred, and mounting a bearing protection shell on the flexible base;
(3) Kneading the flexible base to enable each reinforcing support bar to face downwards, enabling the whole magnetic stirrer to downwards pass through an opening of a container for containing the solution to be stirred, and finally ensuring that the whole magnetic stirrer is positively and horizontally placed at the bottom of the container for containing the solution to be stirred;
(4) The magnetic field reconstruction module is arranged between a container for containing the solution to be stirred and a working platform of the magnetic stirrer, and the rotation of a rotor main body of the magnetic stirrer is controlled by a new magnetic field brought by the magnetic field reconstruction module;
(5) And (3) turning on a control switch of the magnetic stirrer, and adjusting the magnetic stirrer to enable the rotor main body to rotate stably.
Compared with the prior art, the invention has the beneficial effects that: the phenomenon that the rotor main body stops rotating or jumps can be effectively reduced in the using process; the device has high suitability, is applicable to containers of different shapes for containing to-be-stirred solutions, and is applicable to-be-stirred solutions requiring stirring forces and stirring uniformity of different sizes.
Drawings
Fig. 1 is an exploded view of the present invention.
Fig. 2 is a perspective view of the structure of the present invention.
Fig. 3 is a perspective view of the structure of the present invention.
Fig. 4 is an exploded view of the present invention and a magnetic field reconstruction module.
Fig. 5 is a top view of the flexible mount.
Fig. 6 is a top view of the magnet holder.
Fig. 7 is a front view of the present invention.
Fig. 8 is another structural schematic view of the rotor body.
Fig. 9 is a schematic view of another construction of a flexible base.
Fig. 10 is a schematic view of another construction of a flexible base.
Fig. 11 is a schematic view of another construction of a flexible base.
The rotor comprises a rotor body 1, a plastic shell 1a, a magnet 1b, a first ceramic rotating shaft 2, a plastic bearing 3, an inner ring body 3a, an outer ring body 3b, a ball 3c, a bearing protection shell 4, an upper boss 4a, a lower boss 4b, a flexible base 5, a central base 5a, a reinforced support bar 5b, a magnetic field reconstruction module 6, a second ceramic rotating shaft 7, a magnet support 8, a powerful magnet 9, a reconstruction protection shell 10, a 1001 sub-shell 1001a panel, a side plate 1001b, a rotating shaft hole 11, a central hole 12, a reinforced connecting bar 13, a support ring 14, a support pad 15, a movable sleeve one 17, a movable sleeve two 18 and a guide fin 19.
Detailed Description
Example 1
As shown in fig. 1-6, the anti-disturbance and wear-resistant magnetic stirrer of the embodiment comprises a rotor main body 1, a first ceramic rotating shaft 2, a plastic bearing 3, a bearing protection shell 4, a flexible base 5 and a magnetic field reconstruction module 6; the rotor main body 1 comprises a plastic shell 1a, wherein the plastic shell 1a consists of two bilaterally symmetrical shells; the magnet 1b is arranged in the plastic shell 1a, the magnet 1b is in a strip shape, a rotating shaft mounting hole is formed in the center of the bottom of the plastic shell 1a, the first ceramic rotating shaft 2 is vertically arranged, and the upper end of the first ceramic rotating shaft 2 is correspondingly inserted into the rotating shaft mounting hole and is in interference fit with the rotating shaft mounting hole; the plastic bearing 3 comprises an inner ring body 3a and an outer ring body 3b which are coaxial, a plurality of glass balls 3c are uniformly distributed between the inner ring body 3a and the outer ring body 3b along the circumferential direction, the plastic bearing 3 is arranged inside a bearing protection shell 4, the outer ring body 3b of the plastic bearing 3 is in interference fit with the circumferential inner wall of the bearing protection shell 4, and the bearing protection shell 4 is formed by fixing two bilaterally symmetrical shells through a buckle or bonding glue; the center of the upper end and the lower extreme of bearing protective housing 4 is provided with boss 4a and lower boss 4b respectively, the pivot hole 11 that is linked together with the inside of bearing protective housing 4 has been seted up at the center of boss 4a, the lower extreme of first ceramic pivot 2 and the inner circle body 3a phase-match setting of plastic bearing 3, the lower extreme of first ceramic pivot 2 is installed with the inner circle body 3a of plastic bearing 3 and is connected, the lower extreme of first ceramic pivot 2 and the inner circle body 3a of plastic bearing 3 interference fit mutually, the shaft body axial of first ceramic pivot 2 passes the pivot hole 11 setting of boss 4a, the casing mounting hole has been seted up at flexible base 5 center, the lower boss 4b cooperation of bearing protective housing 4 inserts the casing mounting hole setting.
The magnetic field reconstruction module 6 comprises a second ceramic rotating shaft 7, a magnet support 8, a reverse magnet group and a reconstruction protecting shell 10, wherein the reverse magnet group comprises two powerful magnets 9 with opposite magnetic pole directions, the left end and the right end of the magnet support 8 are respectively provided with mounting grooves, the two powerful magnets 9 are respectively mounted in the mounting grooves at the left end and the right end of the magnet support 8, the second ceramic rotating shaft 7 is vertically mounted at the center of the magnet support 8, the upper end face and the lower end face of the reconstruction protecting shell 10 are respectively provided with a central hole 12 for mounting a bearing, and the upper end and the lower end of the second ceramic rotating shaft 7 on the magnet support 8 are respectively rotatably supported on the bearing corresponding to the central hole 12. When the magnetic field reconstruction module 6 is placed on the working platform of the magnetic stirrer, the whole body composed of the second ceramic rotating shaft 7, the magnet support 8 and the reverse magnet group can freely rotate in the reconstruction protecting shell 10, and a new magnetic field is formed above the magnetic field reconstruction module 6, so that the rotor main body 1 is ensured to be applied with a strong enough magnetic field to ensure smooth rotation. In order to facilitate the installation of the internal component parts, the reconfiguration protective case 10 includes two bilaterally symmetrical sub-cases 1001, the sub-cases 1001 includes two semicircular panels 1001a parallel to each other, an arc-shaped side plate 1001b is provided between the outer sides of the two panels 1001a, and the two sub-cases 1001 are fixedly connected by a buckle or glued.
The outer periphery of the plastic shell 1a of the rotor main body 1 and the outer periphery of the bearing protection shell 4 are both provided with ceramic coatings, the inner ring body 3a and the outer ring body 3b of the plastic bearing 3 are both made of ABS materials, a sealing ring is arranged between the outer periphery of the shaft body of the first ceramic rotating shaft 2 and the inner wall of the rotating shaft hole 11 of the upper boss 4a, or the outer periphery of the shaft body of the first ceramic rotating shaft 2 is provided with external threads; the rotor body 1 and the bearing protection shell 4 are made of nylon or polytetrafluoroethylene. The ceramic coating has stable chemical characteristics, and can avoid the reaction of the reagent or the reaction solvent in the container; the sealing ring can ensure the tightness of the first ceramic rotating shaft 2 during rotation and prevent solution from entering the bearing protection shell 4; the external threads on the periphery of the shaft body of the first ceramic rotating shaft 2 can discharge the solution outwards; nylon or polytetrafluoroethylene ensures that the strength of the rotor main body 1 and the bearing protection shell 4 is high; the lower boss 4b of the bearing protective housing 4 is in interference fit with the housing mounting hole.
The flexible base 5 comprises a circular central base body 5a, a plurality of radially distributed flexible reinforcing support bars 5b are arranged on the periphery of the central base body 5a at equal intervals along the circumferential direction, the cross section of each reinforcing support bar 5b is rectangular, and the base is made of rubber or silica gel. The lower sides of the reinforcing support bars 5b are fully distributed with salient points, so that the gripping performance can be improved, the stability and the friction coefficient are better, and the sliding can not occur at the bottom of a container for containing reagents or reaction solvents.
The application method of the anti-disturbance and wear-resistant magnetic stirrer comprises the following steps:
(1) Preparing a rotor body 1 matched with a solution to be stirred, and mounting the rotor body 1 on a first ceramic rotating shaft 2; the solution to be stirred is a reagent or a reaction solvent; when the stirring force required by the solution to be stirred is small, selecting a strip-shaped rotor main body 1; when the stirring force required by the solution to be stirred is large, selecting a cross-shaped rotor main body 1;
(2) Preparing a flexible base 5 matched with the bottom shape of a container for containing the solution to be stirred, and mounting a bearing protection shell 4 on the flexible base 5; when the bottom of the solution to be stirred is flat, a flexible base 5 with reinforcing connection bars 13 is selected; when the bottom of the solution to be stirred is provided with irregular bulges or depressions on the outer side of the center, a flexible base 5 with a supporting ring 14 is selected; when the center of the bottom of the solution to be stirred is provided with a bulge or a recess, a flexible base 5 with a supporting pad 15 is selected;
(3) Kneading the flexible base 5 to enable each reinforcing support bar 5b to face downwards, and pushing each movable sleeve I16 and each movable sleeve II 18 inwards to the innermost side when the movable sleeve I16 and the movable sleeve II 18 are connected to the rotor main body 1; then the whole magnetic stirrer downwards passes through an opening of a container for containing the solution to be stirred, and finally the whole magnetic stirrer is ensured to be positively and horizontally placed at the bottom of the container for containing the solution to be stirred;
(4) The magnetic field reconstruction module 6 is placed between a container for containing the solution to be stirred and a working platform of the magnetic stirrer, and the rotation of the rotor main body 1 of the magnetic stirrer is controlled by a new magnetic field brought by the magnetic field reconstruction module 6;
(5) And (3) turning on a control switch of the magnetic stirrer, and adjusting the magnetic stirrer to enable the rotor main body 1 to rotate stably.
According to the invention, the rotor main body 1 is rotatably supported in the plastic bearing 3 in the bearing protection shell 4, the diameter of the lower end of the first ceramic rotating shaft 2 is larger than that of the upper end, the diameter of the upper end of the first ceramic rotating shaft 2 is equal to that of the shaft body, and the bearing protection shell 4 is fixed on the flexible base 5, so that the rotor main body 1 of the magnetic stirrer can stably rotate in a container; the flexible base 5 provides a smooth support for the rotor body 1 and ensures that the magnetic stirrer as a whole can smoothly enter the interior of the container through the opening of the container by kneading the flexible base 5.
The invention has the advantages that: the magnetic stirring rod with the characteristics of disturbance prevention, wear resistance and low cost in a laboratory is manufactured by using simple and economical parts, and the phenomenon that the rotor main body 1 stops rotating or jumps in the use process can be effectively reduced; the device has high applicability and is suitable for the traditional magnetic stirrer; the device has a high airtight design, the precise parts in the device are not easy to be corroded and polluted by reagents or reaction solvents in the container, and the service life is long; the device is from taking magnetic field reconstruction module 6, and magnetic force of magnetic stirrer work platform is weaker, when unable constraint magnetic force rotor, the accessible magnetic field reconstruction ware builds a new strong magnetic field between container and the magnetic stirrer work platform of splendid attire reagent or reaction solvent, ensures that rotor main part 1 can smoothly smooth steady rotation.
Example 2
As shown in fig. 7 to 8, the difference from embodiment 1 is that: the magnet 1b is in a strip shape, the left end and the right end of the plastic shell 1a of the rotor main body 1 are both connected with a movable sleeve I16 in a sliding manner, the front side and the rear side of the plastic shell 1a of the rotor main body 1 are both fixedly provided with a fixed rod 17 through buckles, the inward end of the fixed rod 17 is connected with the middle part of the plastic shell 1a of the rotor main body 1, the outward end of the fixed rod 17 is connected with a movable sleeve II 18 in a sliding manner, the movable sleeve II 18 is perpendicular to the movable sleeve I16, the left side and the right side of the movable sleeve II 18 and the movable sleeve I16 are both provided with a plurality of inclined guide fins 19 in a sequential arrangement along the length direction, the guide fins 19 on the left side and the right side of each movable sleeve are both symmetrically arranged, and the inclined included angles of the guide fins 19 and the corresponding movable sleeves are 30-45 degrees. The embodiment is suitable for the solution with larger requirements on stirring force and stirring uniformity, and when the movable sleeve II 18 and the movable sleeve I16 retract, the rotor main body 1 has shorter length and can smoothly pass through the bottle mouth of the container; after the magnetic stirrer enters the bottom of the container, when the rotor main body 1 rotates under the action of a magnetic field, the movable sleeve II 18 and the movable sleeve I16 extend out, so that the rotation stability can be improved, and the solution is stirred more uniformly; the guide fins 19 make the rotation of the rotor body 1 smoother; the plastic housing 1a of the rotor body 1 may also be S-shaped, while the fixing bar 17 is also adjusted to be arc-shaped.
Example 3
As shown in fig. 9, the difference from embodiment 1 is that: the bottom surfaces of the reinforcing support bars 5b and the central seat body 5a are positioned in the same plane, a plurality of groups of circumferential reinforcing components which are radially distributed outwards are arranged on the flexible base 5, each circumferential reinforcing component comprises a plurality of arc-shaped reinforcing connecting bars 13 which are arranged between any two adjacent reinforcing support bars 5b in the circumferential direction, and the reinforcing connecting bars 13 are made of rubber or silica gel. The reinforced connecting strip 13 can further improve the ground grabbing stability of the flexible base 5 and avoid shaking of the flexible base 5.
Example 4
As shown in fig. 10, the difference from embodiment 1 is that: the bottom surfaces of the reinforcing support bars 5b and the central seat body 5a are positioned in the same plane, a plurality of flexible circular support rings 14 are arranged below each reinforcing support bar 5b, each support ring 14 is coaxially arranged with the central seat body 5a, the outer diameter of each support ring 14 is gradually increased outwards along the radial direction, and each support ring 14 is made of rubber or silica gel. This embodiment is suitable for containers with irregular protrusions or depressions in the bottom, which may be avoided by the support ring 14.
Example 5
As shown in fig. 11, the difference from embodiment 1 is that: the central seat body 5a is horizontally arranged, the bottom surface of the reinforcing support bar 5b and the bottom surface of the central seat body 5a are obliquely arranged, a plurality of support pads 15 are arranged at intervals on the lower side of the reinforcing support bar 5b, and the bottom surfaces of the support pads 15 are positioned in the same plane, and the support pads 15 are made of rubber or silica gel. This embodiment is applicable to a case where the center of the bottom of the container for holding the solution has a protrusion or depression, which can be avoided by the support pad 15.
The invention is not limited to the above embodiments, and based on the technical solution disclosed in the invention, a person skilled in the art may make some substitutions and modifications to some technical features thereof without creative effort according to the technical content disclosed, and all the substitutions and modifications are within the protection scope of the invention.
Claims (2)
1. The anti-disturbance and wear-resistant magnetic stirrer is characterized by comprising a rotor main body, a first ceramic rotating shaft, a plastic bearing, a bearing protection shell, a flexible base and a magnetic field reconstruction module; the rotor main body comprises a plastic shell, a magnet is arranged in the plastic shell, a rotating shaft mounting hole is formed in the center of the bottom of the plastic shell, the first ceramic rotating shaft is vertically arranged, and the upper end of the first ceramic rotating shaft is correspondingly inserted into the rotating shaft mounting hole and in interference fit with the rotating shaft mounting hole; the plastic bearing comprises a coaxial inner ring body and an outer ring body, a plurality of glass balls are uniformly distributed between the inner ring body and the outer ring body along the circumferential direction, the plastic bearing is arranged inside a bearing protection shell, the outer ring body of the plastic bearing is in interference fit with the circumferential inner wall of the bearing protection shell, an upper boss and a lower boss are respectively arranged at the centers of the upper end and the lower end of the bearing protection shell, a rotating shaft hole communicated with the inside of the bearing protection shell is formed in the center of the upper boss, the lower end of a first ceramic rotating shaft is arranged in a matched mode with the inner ring body of the plastic bearing, the lower end of the first ceramic rotating shaft is connected with the inner ring body of the plastic bearing in an installation mode, the shaft body of the first ceramic rotating shaft axially penetrates through the rotating shaft hole of the upper boss, a shell mounting hole is formed in the center of the flexible base, and the lower boss of the bearing protection shell is inserted into the shell mounting hole in a matched mode; the magnetic field reconstruction module comprises a second ceramic rotating shaft, a magnet support, a reverse magnet group and a reconstruction protecting shell, wherein the reverse magnet group comprises two powerful magnets with opposite magnetic pole directions, the left end and the right end of the magnet support are respectively provided with mounting grooves, the two powerful magnets are respectively mounted in the mounting grooves at the left end and the right end of the magnet support, the second ceramic rotating shaft is vertically mounted at the center of the magnet support, the upper end face and the lower end face of the reconstruction protecting shell are respectively provided with a central hole for mounting a bearing, and the upper end and the lower end of the second ceramic rotating shaft on the magnet support are respectively rotatably supported on the bearings corresponding to the central holes; the reconstruction protective shell comprises two bilaterally symmetrical sub-shells, each sub-shell comprises two semicircular panels which are parallel to each other, an arc-shaped side plate is arranged between the outer sides of the two panels, and the two sub-shells are fixedly connected through a buckle or glued; the outer periphery of the plastic shell of the rotor main body and the outer periphery of the bearing protection shell are both provided with ceramic coatings, the inner ring body and the outer ring body of the plastic bearing are both made of ABS materials, a sealing ring is arranged between the outer periphery of the shaft body of the first ceramic rotating shaft and the inner wall of the rotating shaft hole of the upper boss, or the outer periphery of the shaft body of the first ceramic rotating shaft is provided with external threads; the rotor main body and the bearing protection shell are made of nylon or polytetrafluoroethylene; the flexible base comprises a circular central base body, a plurality of radially distributed flexible reinforcing support bars are arranged on the periphery of the central base body at equal intervals along the circumferential direction, the cross section of each reinforcing support bar is rectangular, and the base is made of rubber or silica gel; the bottom surfaces of the reinforcing support bars and the central seat body are positioned in the same plane, a plurality of flexible circular support rings are arranged below each reinforcing support bar, each support ring is coaxially arranged with the central seat body, the outer diameter of each support ring is gradually increased outwards along the radial direction, and each support ring is made of rubber or silica gel; the magnet is in a strip shape, the left end and the right end of the plastic shell of the rotor main body are both slidably connected with a first movable sleeve, the front side and the rear side of the plastic shell of the rotor main body are both fixedly provided with fixing rods through buckles, the inward end of each fixing rod is connected with the middle part of the plastic shell of the rotor main body, the outward end of each fixing rod is slidably connected with a second movable sleeve, the second movable sleeve is perpendicular to the first movable sleeve, a plurality of inclined guide fins are sequentially arranged on the left side and the right side of the second movable sleeve and the left side and the right side of the first movable sleeve in the length direction, the guide fins on the left side and the right side of each movable sleeve are symmetrically arranged, and the inclined included angles of the guide fins and the corresponding movable sleeves are 30-45 degrees.
2. The method for using the anti-disturbance and wear-resistant magnetic stirrer according to claim 1, which is characterized by comprising the following steps:
(1) Preparing a rotor main body matched with the solution to be stirred, and mounting the rotor main body on a first ceramic rotating shaft;
(2) Preparing a flexible base matched with the bottom shape of a container for containing the solution to be stirred, and mounting a bearing protection shell on the flexible base;
(3) Kneading the flexible base to enable each reinforcing support bar to face downwards, enabling the whole magnetic stirrer to downwards pass through an opening of a container for containing the solution to be stirred, and finally ensuring that the whole magnetic stirrer is positively and horizontally placed at the bottom of the container for containing the solution to be stirred;
(4) The magnetic field reconstruction module is arranged between a container for containing the solution to be stirred and a working platform of the magnetic stirrer, and the rotation of a rotor main body of the magnetic stirrer is controlled by a new magnetic field brought by the magnetic field reconstruction module;
(5) And (3) turning on a control switch of the magnetic stirrer, and adjusting the magnetic stirrer to enable the rotor main body to rotate stably.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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