CN113262694A - Anti-disturbance wear-resistant magnetic stirrer and use method thereof - Google Patents

Abstract

The invention discloses an anti-disturbance wear-resistant magnetic stirrer and a use method thereof in the field of magnetic stirring, 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 installing a bearing protection shell on the flexible base; ensuring that the magnetic stirrer is positively and horizontally placed at the bottom of a container for containing a solution to be stirred; placing a magnetic field reconstruction module between a container for containing a solution to be stirred and a working platform of a magnetic stirrer; the magnetic stirrer is adjusted to enable the rotor 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 shape of the bottom of the container from wearing the shell of the rotor main body.

Description

Anti-disturbance wear-resistant magnetic stirrer and use method thereof

Technical Field

The invention belongs to the field of magnetic stirring, and particularly relates to an anti-disturbance wear-resistant magnetic stirrer and a use method thereof.

Background

In the prior art, a magnetic stirrer is widely applied to various magnetic stirrers and is used as a stirring device for directly contacting reagents. The magnetic stirrer realizes the rotation of the magnetic stirrer by utilizing the coupling action of the magnetic field and 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 are required to be in a closed environment while being stirred, and therefore, a mechanical stirrer in which a stirring head and a stirrer are integrally connected cannot be used, and a magnetic stirrer in which both are separable must be used.

There are problems in stirring the reagents or the reaction solvent as follows: the bottom shape of the container for containing the reagent or the reaction solvent often brings disturbance to the movement of the magnetic stirrer, and the friction and the collision between the magnetic stirrer and the container often cause the movement of the magnetic stirrer to stop or jump, so that the coupling between the magnetic stirrer and a moving magnetic field in the magnetic stirrer is damaged, and the experimental precision is influenced; the conventional bar-shaped design of the magnetic stirrer causes the bottom of the container holding the reagent or the reaction solvent to wear the shell of the magnetic stirrer during the stirring of the reagent or the reaction solvent.

Disclosure of Invention

One of the objectives of the present invention is to provide a disturbance-proof and wear-resistant magnetic stirrer, which can effectively reduce or avoid the phenomenon that the rotor body stops rotating or jumps during the use process, and simultaneously avoid the bottom shape of the container from wearing the shell of the rotor body.

The purpose of the invention is realized as follows: an anti-disturbance 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 is in interference fit with the rotating shaft mounting hole; the plastic bearing comprises an inner ring body and an outer ring body which are coaxial, 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 in the 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, the centers of the upper end and the lower end of the bearing protection shell are respectively provided with an upper boss and a lower boss, the center of the upper boss is provided with a rotating shaft hole communicated with the inside of the bearing protection shell, the lower end of the first ceramic rotating shaft is matched 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 installing way, the lower end of the first ceramic rotating shaft is in interference fit with the inner ring body of the plastic bearing, 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 shell mounting hole in an inserted mode.

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 stable support for the rotor main body, and the whole magnetic stirrer can be ensured to smoothly enter the container through the opening of the container by kneading the flexible base.

Compared with the prior art, the invention has the beneficial effects that: the magnetic stirrer with the advantages of disturbance prevention, wear resistance and low cost in a laboratory is manufactured by simple and economical parts, and the phenomenon that a rotor main body stops rotating or jumps can be effectively reduced in the using process; the device has high applicability, and is suitable for the traditional magnetic stirrer; the device has a high-degree closed design, precision parts in the device are not easy to corrode and pollute by reagents or reaction solvents in the container, and the service life is long; the device is from taking magnetic field reconsitution module, and magnetic stirrer work platform's magnetic force is relatively weak, and when unable constraint magnetic rotor, accessible magnetic field reconsitution ware founds a new high magnetic field between the container of splendid attire reagent or reaction solvent and magnetic stirrer work platform, ensures that the rotor subject can smoothly rotate steadily.

As a further improvement of the present invention, the magnetic field reconstruction module includes a second ceramic rotating shaft, a magnet support, a reverse magnet set and a reconstruction protective housing, the reverse magnet set includes two strong magnets with opposite magnetic poles, mounting grooves are respectively formed at the left and right ends of the magnet support, the two strong magnets are respectively mounted in the mounting grooves at the left and right ends of the magnet support, the second ceramic rotating shaft is vertically mounted at the center of the magnet support, central holes for mounting bearings are respectively formed at the upper and lower end surfaces of the reconstruction protective housing, and the upper and lower ends 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 a working platform of the magnetic stirrer, the whole body formed by the second ceramic rotating shaft, the magnet support and the reverse magnet set can freely rotate in the reconstruction protective shell, a new magnetic field is formed above the magnetic field reconstruction module, and the rotor main body is ensured to apply a strong enough magnetic field to ensure that the rotor main body smoothly rotates.

In order to facilitate the installation of the internal component parts, the reconstruction protective shell comprises two bilateral symmetry sub-shells, each sub-shell comprises two mutually parallel semicircular panels, an arc-shaped side plate is arranged between the outer sides of the two panels, and the two sub-shells are bonded through buckle fixed connection or glue.

As a further improvement of the invention, the periphery of the plastic shell of the rotor main body and the 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, and a sealing ring is arranged between the 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 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 both made of nylon or polytetrafluoroethylene. The ceramic coating has stable chemical characteristics, and can prevent a reagent or a reaction solvent in the container from reacting with the ceramic coating; the sealing ring can ensure the sealing performance of the first ceramic rotating shaft during rotation, and prevent 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; the nylon or polytetrafluoroethylene ensures that the rotor main body and the bearing protection shell have higher strength; the lower boss of the bearing protection shell is in interference fit with the shell mounting hole.

As a further improvement of the invention, the flexible base comprises a circular central base body, a plurality of flexible reinforcing support bars which are distributed radially are arranged on the periphery of the central base body at equal intervals along the circumferential direction, the cross sections of the reinforcing support bars are rectangular, and the base is made of rubber or silica gel. The lower sides of the reinforcing support bars are fully distributed with the convex points, so that the ground gripping performance can be improved, the stability and the friction coefficient are better, and the bottom of a container for containing reagents or reaction solvents cannot slide.

As a further improvement of the invention, the reinforcing support bars and the bottom surface of the central seat body are positioned in the same plane, a plurality of groups of circumferential reinforcing components radially distributed outwards are arranged on the flexible base, each circumferential reinforcing component comprises a plurality of arc-shaped reinforcing connecting bars arranged between any two circumferentially adjacent reinforcing support bars, and each reinforcing connecting bar is made of rubber or silica gel. The reinforced connecting strip can further improve the ground grabbing stability of the flexible base and avoid the flexible base from shaking.

As a further improvement of the invention, the reinforcing support bars and the bottom surface of 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 along the radial direction, and the support rings are made of rubber or silica gel. When the bottom of the container for holding the solution has irregular projections or depressions, the support ring can avoid the projections or depressions.

As a further improvement of the invention, the central seat body is horizontally arranged, the bottom surfaces of the reinforcing support bars and the central seat body are obliquely arranged, a plurality of support pads are arranged at intervals on the lower sides of the reinforcing support bars, and the bottom surfaces of the support pads are positioned in the same plane and are made of rubber or silica gel. When the container for holding the solution has a protrusion or a depression in the center of the bottom, the protrusion or the depression can be avoided by the supporting pad.

As a further improvement of the invention, the magnets are strip-shaped, the left end and the right end of a plastic shell of the rotor main body are both connected with a first movable sleeve in a sliding mode, fixed rods are fixed to the front side and the rear side of the plastic shell of the rotor main body through buckles, the inward end of each fixed rod is connected with the middle of the plastic shell of the rotor main body, the outward end of each fixed rod is connected with a second movable sleeve in a sliding mode, the second movable sleeve is perpendicular to the first movable sleeve, the left side and the right side of the first movable sleeve and the second movable sleeve are sequentially provided with a plurality of inclined guide fins 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 is shorter in 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 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 can be stirred more uniformly; the guide fins enable the rotor main body to rotate more smoothly; the plastic shell of the rotor body can also be S-shaped, and the fixing rod is also adjusted to be arc-shaped.

The second purpose of the invention is to provide a method for using the disturbance-proof and wear-resistant magnetic stirrer, which can effectively reduce the phenomenon that the rotor body stops rotating or jumps in the operation process.

The purpose of the invention is realized as follows: the use method of the disturbance-preventing wear-resistant magnetic stirrer comprises the following steps:

(1) preparing a rotor main body matched with a 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 of a container for containing a solution to be stirred in shape, and installing a bearing protection shell on the flexible base;

(3) kneading the flexible base to enable the reinforcing support bars to face downwards, enabling the whole magnetic stirrer to downwards penetrate through an opening of a container 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 containing the solution to be stirred;

(4) the magnetic field reconstruction module is arranged between a container for containing a solution to be stirred and a working platform of the magnetic stirrer, and a new magnetic field brought by the magnetic field reconstruction module is used for controlling the rotation of a rotor main body of the magnetic stirrer;

(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 applicability, is suitable for containers for holding solutions to be stirred in different shapes, and is suitable for the solutions to be stirred which need different stirring forces and stirring uniformity.

Drawings

Fig. 1 is an exploded view of the present invention.

Fig. 2 is a perspective view of the present invention.

Fig. 3 is a perspective view of the present invention.

Fig. 4 is an exploded view of the magnetic field reconstruction module and the present invention.

Fig. 5 is a top view of a flexible base.

Fig. 6 is a plan 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 another schematic structure of the flexible base.

Fig. 10 is another schematic structure of a flexible base.

Fig. 11 is another schematic diagram of a flexible base.

The magnetic field reconstruction device 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 reinforcing support bar 5b, a magnetic field reconstruction module 6, a second ceramic rotating shaft 7, a magnet support 8, a strong magnet 9, a reconstruction protection shell 10, a split shell 1001, a panel 1001a, a side plate 1001b, a rotating shaft hole 11, a central hole 12, a reinforcing connecting strip 13, a support ring 14, a support pad 15, a first movable sleeve 16, a fixed rod 17, a second movable sleeve 18 and a guide fin 19.

Detailed Description

Example 1

As shown in fig. 1 to 6, the magnetic stirrer for preventing disturbance and wear of the present embodiment includes a rotor 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 body 1 comprises a plastic shell 1a, and 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 in 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 upper end of bearing protection shell 4 and the center of lower extreme are provided with boss 4a and boss 4b down respectively, the pivot hole 11 that is linked together with bearing protection shell 4 inside is seted up at the center of last boss 4a, the lower extreme of first pottery pivot 2 sets up with plastic bearing 3's inner circle body 3a phase-match, the lower extreme of first pottery pivot 2 and plastic bearing 3's inner circle body 3a looks erection joint, the lower extreme of first pottery pivot 2 and plastic bearing 3's inner circle body 3a looks interference fit, boss 4 a's pivot hole 11 setting is passed to the shaft body axial of first pottery pivot 2, the casing mounting hole has been seted up at flexible base 5 center, the lower boss 4b cooperation of bearing protection shell 4 inserts the casing mounting hole setting.

Magnetic field reconstruction module 6 includes second pottery pivot 7, magnet support 8, reverse magnet group and reconsitution protective housing 10, reverse magnet group includes two magnetic pole opposite direction's powerful magnet 9, and both ends all are provided with the mounting groove about magnet support 8, and two powerful magnet 9 are installed respectively in the mounting groove at both ends about magnet support 8, and the vertical installation in magnet support 8 center of second pottery pivot 7, and the upper and lower both ends face of reconsitution protective housing 10 all is provided with the centre bore 12 of installation bearing, and the upper and lower both ends of the ceramic pivot 7 of second on the magnet support 8 rotate respectively to be supported on the bearing that corresponds centre bore 12. When the magnetic field reconstruction module 6 is placed on the magnetic stirrer working platform, the whole body consisting of the second ceramic rotating shaft 7, the magnet support 8 and the reverse magnet set can freely rotate in the reconstruction protective shell 10, and a new magnetic field is formed above the magnetic field reconstruction module 6, so that a strong enough magnetic field is applied to the rotor body 1 to ensure that the rotor body can smoothly rotate. In order to facilitate installation of internal component parts, the reconstruction protective case 10 includes two bilaterally symmetrical sub-cases 1001, the sub-cases 1001 include two mutually parallel semicircular panels 1001a, an arc-shaped side plate 1001b is disposed between the outer sides of the two panels 1001a, and the two sub-cases 1001 are fixed and connected by a buckle or bonded by glue.

Ceramic coatings are arranged on the periphery of a plastic shell 1a of the rotor main body 1 and the periphery of the bearing protection shell 4, an inner ring body 3a and an outer ring body 3b of the plastic bearing 3 are both made of ABS materials, and a sealing ring is arranged between the periphery of a 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 external threads are arranged on the periphery of the shaft body of the first ceramic rotating shaft 2; the rotor body 1 and the bearing protection shell 4 are both made of nylon or polytetrafluoroethylene. The ceramic coating has stable chemical characteristics, and can prevent a reagent or a reaction solvent in the container from reacting with the ceramic coating; the sealing ring can ensure the sealing performance 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; the nylon or polytetrafluoroethylene ensures that the rotor body 1 and the bearing protection shell 4 have higher strength; the lower boss 4b of the bearing protection case 4 is interference-fitted with the case mounting hole.

The flexible base 5 comprises a circular central base body 5a, a plurality of flexible reinforcing support bars 5b which are distributed radially 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 provided with convex points, so that the ground gripping performance can be improved, the stability and the friction coefficient are better, and the bottom of a container for containing reagents or reaction solvents cannot slide.

The method for using the disturbance-preventing 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, a strip-shaped rotor main body 1 is selected; when the stirring force required by the solution to be stirred is large, the cross-shaped rotor main body 1 is selected;

(2) preparing a flexible base 5 matched with the bottom shape of a container for containing a solution to be stirred, and installing a bearing protection shell 4 on the flexible base 5; when the bottom of the solution to be stirred is flat, selecting a flexible base 5 with a reinforcing connecting strip 13; when the bottom of the solution to be stirred is positioned at the outside of the center and is provided with irregular bulges or depressions, 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 depression, selecting a flexible base 5 with a supporting pad 15;

(3) kneading the flexible base 5 to enable each reinforcing support strip 5b to face downwards, and pushing each movable sleeve 16 and each movable sleeve 18 inwards to the innermost side when the rotor main body 1 is connected with the movable sleeve 16 and the movable sleeve 18; then the whole magnetic stirrer downwards passes through the opening of the container for holding 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 holding the solution to be stirred;

(4) the magnetic field reconstruction module 6 is placed between a container for containing a solution to be stirred and a working platform of the magnetic stirrer, and a new magnetic field brought by the magnetic field reconstruction module 6 is used for controlling the rotation of the rotor main body 1 of the magnetic stirrer;

(5) and turning on a control switch of the magnetic stirrer, and adjusting the magnetic stirrer to enable the rotor body 1 to rotate stably.

According to the invention, the rotor 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 of the first ceramic rotating shaft, 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 body 1 of the magnetic stirrer can stably rotate in a container; the flexible base 5 provides a stable support for the rotor body 1 and by kneading the flexible base 5 it can be ensured that the magnetic stirrer as a whole can smoothly enter the interior of the vessel through the opening of the vessel.

The invention has the advantages that: the magnetic stirrer with the advantages of disturbance prevention, wear resistance and low cost in a laboratory is manufactured by simple and economical parts, and the phenomenon that the rotor main body 1 stops rotating or jumps can be effectively reduced in the using process; the device has high applicability, and is suitable for the traditional magnetic stirrer; the device has a high-degree closed design, precision parts in the device are not easy to corrode and pollute by reagents or reaction solvents in the container, and the service life is long; the device is from taking magnetic field reconsitution module 6, and magnetic stirrer work platform's magnetic force is relatively weak, and when unable constraint magnetic rotor, accessible magnetic field reconsitution ware founds a new high magnetic field between the container of splendid attire reagent or reaction solvent and magnetic stirrer work platform, ensures that rotor main part 1 can smoothly rotate steadily.

Example 2

As shown in fig. 7 to 8, the difference from embodiment 1 is that: the magnetite 1b is the strip, equal sliding connection in both ends has a movable sleeve 16 about the plastic casing 1a of rotor main part 1, both sides all are fixed with the dead lever 17 through the buckle around the plastic casing 1a of rotor main part 1, the inboard one end of dead lever 17 is connected with the plastic casing 1a middle part of rotor main part 1, the outside one end sliding connection of dead lever 17 has a movable sleeve two 18, movable sleeve two 18 is mutually perpendicular with movable sleeve one 16, the guide fin 19 that has a plurality of slopes is all arranged along length direction in proper order to the left and right sides of movable sleeve two 18 and movable sleeve one 16, the guide fin 19 of every movable sleeve left and right sides all symmetry sets up, the slope contained angle of guide fin 19 and corresponding movable sleeve is 30 ~ 45. The embodiment is suitable for the solution with larger requirements on stirring force and stirring uniformity, and when the second movable sleeve 18 and the first movable sleeve 16 retract, the rotor main body 1 is shorter in length and can smoothly pass through the opening 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 second movable sleeve 18 and the first movable sleeve 16 extend out, so that the rotation stability can be improved, and the solution can be stirred more uniformly; the guide fins 19 make the rotor body 1 more smoothly rotate; the plastic casing 1a of the rotor body 1 may also be S-shaped, while the fixing bars 17 are also adjusted to be arc-shaped.

Example 3

As shown in fig. 9, the difference from embodiment 1 is that: the bottom surface of reinforcing support bar 5b and central pedestal 5a is located the coplanar, is provided with a plurality of groups on the flexible base 5 and consolidates the subassembly along the circumference of radial outside radiation distribution, the subassembly is consolidated to circumference includes a plurality of settings arc reinforcing connecting strip 13 between arbitrary circumference adjacent two reinforcing support bars 5b, and reinforcing connecting strip 13 adopts rubber or silica gel to make. The reinforced connecting strip 13 can further improve the ground grabbing stability of the flexible base 5 and avoid the flexible base 5 from shaking.

Example 4

As shown in fig. 10, the difference from embodiment 1 is that: the reinforcing support bars 5b and the bottom surface of 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 along the radial direction, and the support rings 14 are made of rubber or silica gel. This embodiment is suitable for a solution container having irregular protrusions or depressions on the bottom, which the support ring 14 can avoid.

Example 5

As shown in fig. 11, the difference from embodiment 1 is that: the level of center pedestal body 5a sets up, consolidates the bottom surface of support bar 5b and the bottom surface of center pedestal body 5a slope mutually sets up, and the downside interval of consolidating support bar 5b is provided with a plurality of supporting pads 15, and each supporting pad 15 adopts rubber or silica gel to make in the bottom surface of each supporting pad 15 lies in the coplanar. This embodiment is suitable for a case where the container for containing the solution has a protrusion or a depression in the center of the bottom, and the protrusion or the depression can be avoided by the support pad 15.

The present invention is not limited to the above-mentioned embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts according to the disclosed technical contents, and these substitutions and modifications are all within the protection scope of the present invention.

Claims (10)

1. An anti-disturbance 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 is in interference fit with the rotating shaft mounting hole; the plastic bearing comprises an inner ring body and an outer ring body which are coaxial, 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 in the 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, the centers of the upper end and the lower end of the bearing protection shell are respectively provided with an upper boss and a lower boss, the center of the upper boss is provided with a rotating shaft hole communicated with the inside of the bearing protection shell, the lower end of the first ceramic rotating shaft is matched 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 installing way, the lower end of the first ceramic rotating shaft is in interference fit with the inner ring body of the plastic bearing, 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 shell mounting hole in an inserted mode.

2. The disturbance-prevention and wear-resistant magnetic stirrer according to claim 1, wherein the magnetic field reconstruction module comprises a second ceramic rotating shaft, a magnet support, a reverse magnet set and a reconstruction protective shell, the reverse magnet set comprises two strong magnets with opposite magnetic poles, mounting grooves are formed in the left end and the right end of the magnet support, the two strong magnets are respectively mounted in the mounting grooves in the left end and the right end of the magnet support, the second ceramic rotating shaft is vertically mounted in the center of the magnet support, central holes for mounting bearings are formed in the upper end surface and the lower end surface of the reconstruction protective shell, and the upper end and the lower end of the second ceramic rotating shaft on the magnet support are respectively rotatably supported on bearings corresponding to the central holes.

3. The magnetic stirrer according to claim 2, wherein the reconfiguration protection shell comprises two left-right symmetrical sub-shells, each sub-shell comprises two mutually parallel semicircular panels, 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 bonded through glue.

4. The magnetic stirrer capable of preventing disturbance and resisting wear and tear according to any one of claims 1 to 3, wherein the outer peripheries of the plastic shell and 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 material, and 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 both made of nylon or polytetrafluoroethylene.

5. The magnetic stirrer according to any one of claims 1 to 3, wherein the flexible base comprises a circular central base body, the periphery of the central base body is provided with a plurality of radially distributed flexible reinforcing support bars 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.

6. The magnetic stirrer according to claim 5, wherein the reinforcing support bars and the bottom surface of the central base body are in the same plane, the flexible base is provided with a plurality of sets of circumferential reinforcing members radially distributed outwards, the circumferential reinforcing members include a plurality of arc-shaped reinforcing connecting bars arranged between any two circumferentially adjacent reinforcing support bars, and the reinforcing connecting bars are made of rubber or silica gel.

7. The magnetic stirrer according to claim 5, wherein the reinforcing support bars and the bottom surface of the central base are in the same plane, a plurality of flexible circular support rings are disposed under the reinforcing support bars, each support ring is coaxial with the central base, the outer diameter of each support ring increases radially outward, and the support rings are made of rubber or silica gel.

8. The magnetic stirrer according to claim 5, wherein the central base is horizontally disposed, the bottom surfaces of the reinforcing support bars and the central base are inclined, the supporting pads are spaced from the bottom of the reinforcing support bars, and the bottom surfaces of the supporting pads are made of rubber or silica gel.

9. The magnetic stirrer capable of preventing disturbance and resisting wear and abrasion as claimed in any one of claims 1 to 3, wherein the magnet is in a strip shape, the left and right ends of the plastic shell of the rotor body are slidably connected with a first movable sleeve, the front and rear sides of the plastic shell of the rotor body are respectively fixed with a fixed rod through a buckle, the inward end of the fixed rod is connected with the middle part of the plastic shell of the rotor body, the outward end of the fixed rod is slidably connected with a second movable sleeve, the second movable sleeve is perpendicular to the first movable sleeve, the left and right sides of the second movable sleeve and the first movable sleeve are sequentially provided with a plurality of inclined guide fins along the length direction, the guide fins on the left and right sides of each movable sleeve are symmetrically arranged, and the inclined included angle between each guide fin and the corresponding movable sleeve is 30-45 degrees.

10. The use of the disturbance and wear resistant magnetic stirrer according to any one of claims 1 to 9, characterized by comprising the steps of:

(1) preparing a rotor main body matched with a 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 of a container for containing a solution to be stirred in shape, and installing a bearing protection shell on the flexible base;

(3) kneading the flexible base to enable the reinforcing support bars to face downwards, enabling the whole magnetic stirrer to downwards penetrate through an opening of a container 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 containing the solution to be stirred;

(4) the magnetic field reconstruction module is arranged between a container for containing a solution to be stirred and a working platform of the magnetic stirrer, and a new magnetic field brought by the magnetic field reconstruction module is used for controlling the rotation of a rotor main body of the magnetic stirrer;

(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.

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