CN218166823U - Electromagnetic stirrer and experimental equipment - Google Patents

Abstract

The application relates to an electromagnetic stirrer and experimental equipment. The electromagnetic stirrer comprises a stirring platform, a fixed plate, a plurality of groups of magnetic rotating pieces and a driving system, wherein the fixed plate is connected with the stirring platform at intervals; the magnetic rotating pieces are arranged on the same side of the fixed plate close to the stirring platform and respectively correspond to different stirring areas of the stirring platform; the driving system comprises a plurality of driving mechanisms, the driving mechanisms are connected with the plurality of groups of magnetic rotation pieces in a one-to-one correspondence mode, the driving mechanisms are used for driving the plurality of groups of magnetic rotation pieces to rotate in different directions respectively, and the two groups of magnetic rotation pieces which are adjacently arranged rotate in different directions so as to generate superposed rotating magnetic fields in a space area where the stirring platform is located. The scheme that this application provided has increased the working area of stirring platform and has guaranteed the homogeneity of magnetic field in each region of stirring platform, can satisfy the intensive mixing to high concentration solution.

Description

Electromagnetic stirrer and experimental equipment

Technical Field

The application relates to the technical field of automation equipment, in particular to an electromagnetic stirrer and experimental equipment.

Background

Electromagnetic stirrers are laboratory instruments used for liquid mixing, primarily for the homogeneous mixing of reactants. The basic principle is that magnetic stirrer inside container is driven by magnetic field to rotate circularly by means of the principle of like poles repelling and opposite poles attracting.

In the electromagnetic stirrer in the related art, the size of the stirring table is small due to the limitation of the distribution range of the magnetic field, so that a large-scale stirring experiment cannot be realized, and in addition, the magnetic field intensity at the edge position of the magnetic field is uneven, so that the reagent with large concentration is difficult to be fully stirred.

SUMMERY OF THE UTILITY MODEL

In order to solve or partially solve the problems existing in the related art, the application provides an electromagnetic stirrer and experimental equipment, the working area of a stirring platform is effectively increased, the uniformity of a magnetic field in each area of the stirring platform is ensured, meanwhile, the sufficient stirring of high-concentration solution is met, and the stirring experimental efficiency is improved.

A first aspect of the present application provides an electromagnetic stirrer, comprising:

the device comprises a stirring platform, a fixed plate, a plurality of groups of magnetic rotating pieces and a driving system, wherein the fixed plate is connected with the stirring platform at intervals;

the magnetic rotating pieces are arranged on the same side of the fixed plate close to the stirring platform and respectively correspond to different stirring areas of the stirring platform;

the driving system comprises a plurality of driving mechanisms, a plurality of the driving mechanisms are connected with the magnetic rotating pieces in a one-to-one correspondence mode, the driving mechanisms are used for driving the magnetic rotating pieces to rotate, wherein the magnetic rotating pieces are adjacently arranged and rotate in different directions, and the rotating fields which are overlapped are generated in the space area where the stirring platform is located.

In one embodiment, the plurality of sets of magnetic rotating members are disposed along the same plane on the same side of the fixed plate.

In one embodiment, the magnetic rotating members are provided in at least two groups, the number of the magnetic rotating members in each group being at least two;

the magnetic rotors in the same group rotate in the same direction.

In one embodiment, the magnetic rotating pieces are provided in two groups, the number of the magnetic rotating pieces in each group is two, four magnetic rotating pieces in each group are respectively arranged at four vertexes of a virtual quadrangle on the fixed plate, and the two groups of the magnetic rotating pieces are respectively arranged along two diagonal lines of the virtual quadrangle;

the driving system comprises two driving mechanisms, two driving mechanisms are used for driving the magnetic rotation pieces to rotate in different directions respectively, wherein the magnetic rotation pieces rotate in the same direction on the same diagonal line, and the magnetic rotation pieces rotate in different directions on different diagonal lines.

In one embodiment, the stirring platform comprises four stirring areas, and a projection point of a center position of each stirring area in the thickness direction of the fixing plate is a vertex of the virtual quadrangle.

In one embodiment, the magnetic rotating device further comprises four rotating assemblies, each of the magnetic rotating members is connected with the fixed plate through the corresponding rotating assembly, each rotating assembly comprises a rotating shaft which is rotatably connected with the fixed plate, and the magnetic rotating members are connected with the rotating shafts;

each driving mechanism is in transmission connection with two rotating shafts arranged along the same diagonal line and used for driving the two rotating shafts to rotate.

In one embodiment, the driving mechanism comprises a motor, a driving wheel, two driven wheels and a synchronous belt; the driving wheel is connected with the output shaft of the motor, the two driven wheels are respectively connected with the two rotating shafts arranged along the same diagonal line, and the synchronous belt is wound between the driving wheel and the two driven wheels.

In one embodiment, the two driving mechanisms have the same structure and are respectively arranged on two sides of the fixing plate.

In one embodiment, the rotation planes of the synchronous belts of the two driving mechanisms are parallel to the plane of the fixed plate; the synchronous belts of the two driving mechanisms are intersected in the projection in the thickness direction of the fixed plate.

In one embodiment, the driving mechanism further includes a tension adjusting mechanism, the tension adjusting mechanism includes a tension wheel mounted on the fixing plate, an inner side of the synchronous belt is wound around the driving wheel and the driven wheel, and an outer side of the synchronous wheel is wound around the tension wheel.

In an embodiment, a guide groove is formed in the fixing plate at a position corresponding to the tensioning wheel, the tensioning adjustment mechanism further includes a sliding member mounted in the guide groove and a connecting shaft connecting the sliding member and the tensioning wheel, one end of the connecting shaft is fixedly connected to the sliding member, and the other end of the connecting shaft is rotatably connected to the tensioning wheel.

In one embodiment, the fixing plate is provided with a mounting hole, the rotating shaft penetrates through the mounting hole, and two ends of the rotating shaft are respectively located at two sides of the fixing plate; the rotating assembly further comprises a bearing assembly arranged in the mounting hole and an axial pre-tightening structure for axially pre-tightening the bearing assembly, and the rotating shaft is rotatably connected to the fixing plate through the bearing assembly;

the bearing assembly is matched with the axial pre-tightening structure, the axial pre-tightening structure comprises retaining rings and end covers which are respectively arranged on the upper side and the lower side of the bearing assembly, and the retaining rings and the end covers are used for limiting the bearing assembly in the mounting hole in the axial direction.

In one embodiment, the diameter of the driving wheel is larger than that of the driven wheel, and the diameters of the driven wheels corresponding to the magnetic rotating members in each group are equal.

In an embodiment, the sensor further includes a sensing assembly disposed in cooperation with each of the driving mechanisms, the sensing assembly includes a sensor fixedly disposed relative to the fixing plate and a sensing element fixedly disposed relative to the rotating shaft, and the sensor is configured to sense a rotation signal of the sensing element rotating with the rotating shaft.

In an embodiment, still include backup pad and casing, the backup pad is located the fixed plate deviate from one side that the magnetism rotated the piece, the backup pad through a plurality of spliced poles with the fixed plate links to each other, the casing is located stirring platform with between the fixed plate, the multiunit the magnetism rotated the piece and held in the casing.

The second aspect of the present application provides an experimental apparatus, comprising: an experimental platform and at least one electromagnetic stirrer as described above, said electromagnetic stirrer being arranged on said experimental platform.

The technical scheme provided by the application can comprise the following beneficial effects:

the embodiment of the application provides an electromagnetic stirrer, because a plurality of magnetism rotates the regional setting of different stirring that corresponds to stirring platform respectively, when two sets of magnetism rotation pieces that actuating system drive adjacent setting rotated along not equidirectional rotation, a plurality of magnetism rotation pieces can rotate the regional even rotating magnetic field of regional production of the adjacent region of piece in region and different magnetism that separately place, realize the homogeneity of electromagnetic stirring, effectively increased stirring platform's working area, and then easily carry out large-scale stirring experiment. In addition, after the magnetic fields generated by the plurality of magnetic rotating parts are mutually superposed, the magnetic field intensity is stronger, and the liquid with higher viscosity can be stirred more fully under the induction action of the magnetic bars matched with the magnetic rotating parts, so that the stirring experiment efficiency is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.

FIG. 1 is a schematic view of an electromagnetic stirrer according to an embodiment of the present application;

FIG. 2 is a schematic diagram of an alternative perspective of the electromagnetic stirrer shown in the embodiment of FIG. 1;

FIG. 3 isbase:Sub>A cross-sectional view taken along A-A of FIG. 1;

FIG. 4 is a side view of an electromagnetic stirrer according to an embodiment of the present application;

FIG. 5 is a schematic perspective view of an electromagnetic stirrer according to an embodiment of the present application;

FIG. 6 is a schematic diagram of an external structure of an electromagnetic stirrer according to an embodiment of the present application;

FIG. 7 is a schematic view of the arrangement of the magnetic rotors of the electromagnetic stirrer according to an embodiment of the present application;

fig. 8 is a schematic view of the arrangement of the magnetic rotors of an electromagnetic stirrer according to another embodiment of the present application.

Reference numerals: 100. a fixing plate; 200. a stirring platform; 300. a support plate; 400. a protective cover; 500. a housing; 110. 110a, 110b, 110c magnetic rotors; 111. a rotating shaft; 310. connecting columns; 320. a mounting frame; 322. a circuit board; 120. a motor; 121. a driving wheel; 122. a driven wheel; 123. a synchronous belt; 124. a tension pulley; 1241. a connecting shaft; 130. an inductive component; 131. a fixed mount; 132. an inductor; 133. a sensing member; 150. a guide groove; 151. a slider; 1511. a chute; 1111. an end cap; 1112. an outer liner; 1113. an inner liner; 1114. a bearing assembly; 1114a, 1114b, deep groove ball bearings; 1115. pre-tightening the nut; 1116. and a retainer ring.

Detailed Description

Embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While embodiments of the present application are illustrated in the accompanying drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the present application.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections as well as removable connections or combinations; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The electromagnetic stirrer in the related art has a small stirring platform due to the limitation of the magnetic field distribution range, so that a large-scale stirring experiment cannot be realized.

To the above problem, the embodiment of the application provides an electromagnetic stirrer, has effectively increased stirring platform's working area and has guaranteed the homogeneity of magnetic field in each region of stirring platform, satisfies the intensive mixing to high concentration solution simultaneously, has improved stirring experimental efficiency.

The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.

FIG. 1 is a schematic view of an electromagnetic stirrer according to an embodiment of the present application; fig. 5 is a schematic perspective view of an electromagnetic stirrer according to an embodiment of the present application.

Referring to fig. 1 and 5, an embodiment of the present application provides an electromagnetic stirrer, including a stirring platform 200, a fixing plate 100 connected to the stirring platform 200 at an interval, a plurality of sets of magnetic rotors 110 mounted on the fixing plate 100, and a driving system for driving the plurality of sets of magnetic rotors 110 to rotate; wherein, the plurality of sets of magnetic rotation components 110 are disposed on the same side of the fixing plate 100, for example, on the upper side of the fixing plate 100, and the plurality of sets of magnetic rotation components 110 are respectively disposed corresponding to different stirring areas of the stirring platform 200; the driving system includes a plurality of driving mechanisms, the plurality of driving mechanisms are connected with the plurality of sets of magnetic rotation components 110 in a one-to-one correspondence, the plurality of driving mechanisms are configured to respectively drive the plurality of sets of magnetic rotation components 110 to rotate, wherein two sets of magnetic rotation components 110 adjacently disposed rotate in different directions, so as to generate superimposed rotating magnetic fields in a spatial region where the stirring platform 200 is located.

The magnetic rotation members 110 of the present embodiment may be circular or elongated block-shaped magnets, the magnetic rotation members 110 are rotatably mounted on the fixing plate 100, for example, connected to the fixing plate 100 through the rotating shaft 111, the plurality of sets of magnetic rotation members 110 are disposed along the same plane at the same side of the fixing plate 100, the plane is parallel to the stirring platform, the magnetic field forces generated by the plurality of magnetic rotation members in different stirring areas of the stirring platform are equal in magnitude, and the stirring uniformity in different stirring areas is improved.

The stirring platform 200 is parallel to the fixing plate 100 and is fixedly connected to the fixing plate 100, and the plurality of sets of magnetic rotation members 110 are located between the fixing plate 100 and the stirring platform 200 and are aligned with different stirring areas of the stirring platform 200 in the vertical direction.

In this embodiment, the stirring platform 200 is used to place a container (such as a test tube, a reagent bottle, etc.) in which a reagent to be stirred is placed, and the stirring platform 200 has a predetermined shape and size, which can be determined according to the size and arrangement position of the plurality of magnetic rotators 110 and the range of the magnetic field generated by the magnetic rotators 110.

Because a plurality of magnetism rotates the regional setting of the different stirring that a plurality of magnetism rotated piece 110 corresponded to stirring platform 200, a plurality of actuating mechanism can drive multiunit magnetism respectively and rotate piece 110 synchronous revolution, and two sets of magnetism that adjacent setting rotated piece 110 along not equidirectional rotation, therefore, a plurality of magnetism rotated piece 110 can be in the region at place separately and the region that different magnetism rotated piece 110 is adjacent produces the rotating magnetic field of relative uniformity, realize the homogeneity of electromagnetic stirring, stirring platform 200's work area has effectively been increased, and then easily carry out large-scale stirring experiment. The rotation directions of two adjacent sets of magnetic rotors 110 are opposite, and the rotation directions of all the magnetic rotors 110 in the same set of magnetic rotors 110 are the same.

In addition, after the magnetic fields generated by the magnetic rotating pieces 110 are mutually superposed, the magnetic field intensity is stronger, and the liquid with higher viscosity can be more fully stirred under the induction action of the magnetic bars or the magnetons matched with the magnetic rotating pieces, so that the stirring experiment efficiency is improved.

The magnetic rotation member 110 of the present embodiment may be provided with at least two groups, and the number of the magnetic rotation member 110 in each group is at least one. In order to increase the working area of the stirring platform 200 and ensure the uniformity of the magnetic field in each region of the stirring platform 200, it is preferable that the magnetic rotation members 110 are provided with at least two groups, such as two groups, four groups, six groups or other values, and the number of the magnetic rotation members 110 in each group is at least two, such as two, three, four or other values, which is not limited herein. For example, the magnetic rotation members 110 are provided in two groups, each group including two magnetic rotation members 110; for another example, the magnetic rotation members 110 are provided in two groups, each group including three magnetic rotation members 110; for another example, the magnetic rotation member 110 is provided in four groups, each group including two magnetic rotation members 110.

In some embodiments, the magnetic rotors 110 are provided in two sets, i.e., the magnetic rotors 110a and 100b, and the number of the magnetic rotors 110 in each set is two, i.e., one set of the magnetic rotors 110 includes two magnetic rotors 110a, and the other set of the magnetic rotors 110 includes two magnetic rotors 110b. The two magnetic rotors 110a and 110b are respectively disposed at four vertices of the virtual quadrangle R on the fixed plate 100, and the two magnetic rotors 110a and 110b are respectively disposed along two diagonals of the virtual quadrangle R.

In this embodiment, the stirring platform 200 may include four stirring regions, and a projection point of a center position of each stirring region in the thickness direction of the fixing plate 100 is a vertex of the virtual quadrangle R. The virtual quadrangle R may be a rectangle, and the stirring platform 200 may be configured as a rectangle, and four sides of the virtual quadrangle R are respectively parallel to four sides of the stirring platform 200. In addition, the stirring platform 200 may also be configured to be circular, and is not limited herein.

In this embodiment, the driving system includes two driving mechanisms for respectively driving the two sets of magnetic rotors 110a and 110b to rotate, wherein the two magnetic rotors 110 on the same diagonal rotate in the same direction, and the magnetic rotors 110 on different diagonals rotate in different directions, i.e. the two magnetic rotors 110a rotate in the same direction, the two magnetic rotors 110b also rotate in the same direction, but the magnetic rotors 110a and the magnetic rotors 110b rotate in opposite directions. For example, the two magnetic rotation pieces 110a rotate in the clockwise direction, and the two magnetic rotation pieces 110b rotate in the counterclockwise direction.

In some embodiments, the two driving mechanisms for driving the two sets of magnetic rotation members 110a and 110b have the same structure, and the two driving mechanisms may be a matching mechanism of a synchronous wheel and a synchronous belt, or a meshing mechanism of a gear and a gear, which is not limited herein.

In this embodiment, the electromagnetic stirrer may further include a plurality of rotating assemblies, and the rotating assemblies are connected to the magnetic rotors 110 in a one-to-one correspondence, and are configured to drive the magnetic rotors 110 to rotate under the driving of the driving mechanism. Wherein one driving mechanism drives the rotation components connected to the same set of magnetic rotation members 110 to rotate.

In some embodiments, as shown in fig. 3 to 5, the electromagnetic stirrer includes four rotating assemblies, each of the magnetic rotators 110 is connected to the fixed plate 100 via a respective rotating assembly, the rotating assembly includes a rotating shaft 111 rotatably connected to the fixed plate 100, and the magnetic rotators 110 are fixed to the corresponding rotating shafts 111 and can rotate together with the corresponding rotating shafts 111.

In one implementation, the magnetic rotation member 110 is detachably fixed to the end of the rotation shaft 111, for example, by a screw connected to the end of the rotation shaft 111.

In this embodiment, each driving mechanism is in transmission connection with two rotating shafts 111 arranged along the same diagonal line, and is used for driving the two rotating shafts 111 arranged along the same diagonal line to rotate.

In this embodiment, each driving mechanism may include a motor, a driving wheel connected to the motor, a plurality of driven wheels, and a synchronous belt for connecting the driving wheel and the driven wheels, wherein the driven wheels are connected to the plurality of rotating shafts 111 corresponding to the same set of magnetic rotation members 110 in a one-to-one correspondence. The driven wheel rotates to drive the rotating shaft 111 to rotate together.

In some embodiments, as shown in fig. 4, the driving mechanism includes a motor 120, a driving pulley 121, two driven pulleys 122, and a timing belt 123; the driving pulley 121 is disposed on an output shaft of the motor 120, the two driven pulleys 122 are respectively connected to two rotating shafts 111 disposed along the same diagonal line, and the timing belt 123 is wound between the driving pulley 121 and the two driven pulleys 122.

The motor 120 may be a synchronous motor 120, when the motor 120 is started, an output shaft of the motor 120 drives a driving wheel 121 to rotate, the driving wheel 121 can drive two driven wheels 122 to rotate through a synchronous belt 123, and when the driven wheels 122 rotate, the two rotating shafts 111 and the magnetic rotating member 110 arranged along the same diagonal line can be driven to rotate together.

In some embodiments, the diameter of the driving wheel 121 is larger than that of the driven wheel 122, and the diameters of the driven wheels 122 corresponding to the magnetic rotation members 110 in each group are equal, so that the plurality of magnetic rotation members 110 in the same group rotate at a set rotation speed, and the rotation speeds of the plurality of magnetic rotation members 110 are kept uniform.

Referring to fig. 1, 2 and 4, in some embodiments, the two driving mechanisms are respectively disposed on two sides of the fixing plate 100, and a rotation plane of the synchronous belts 123 of the two driving mechanisms is parallel to a plane of the fixing plate 100, wherein the fixing plate 100 can not only fix the two driving mechanisms, but also space the two driving mechanisms apart from each other, so as to avoid interference of the two driving mechanisms during movement, and further make the structure of the electromagnetic stirrer more compact.

In this embodiment, the output shafts of the motors 120 of the two driving mechanisms are parallel to the thickness direction of the fixing plate 100 and have opposite directions, that is, the two motors 120 are installed in an inverted and symmetrical manner in the thickness direction of the fixing plate 100, and when the output shafts of the two motors 120 rotate in the same direction at the same time, the magnetic rotors 110 corresponding to the two motors 120 rotate in opposite directions when viewed from the upper side or the lower side of the fixing plate 100, so that the superimposed rotating magnetic fields can be generated in the spatial region where the stirring platform 200 is located.

In this embodiment, the two sets of magnetic rotation components 110 are respectively disposed along two diagonal lines of the virtual quadrangle R, the four magnetic rotation components 110 are distributed on four vertices of the virtual quadrangle R, the motors 120 of the two driving mechanisms can be respectively disposed at positions close to two opposite edges of the virtual quadrangle R, each motor 120 is disposed between two vertices close to the virtual quadrangle R, and the running directions of the synchronous belts 123 of the two driving mechanisms are respectively along two diagonal lines of the virtual quadrangle R. The synchronous belts 123 of the two driving mechanisms intersect in projection in the thickness direction of the fixing plate 100, so that the two driving mechanisms operate independently, and the space occupation of the two driving mechanisms is reduced.

In some embodiments, as shown in fig. 1 and fig. 2, the driving mechanism further includes a tension adjusting mechanism, the tension adjusting mechanism includes a tension pulley 124 mounted on the fixing plate 100, the synchronous belt 123 is further wound around the tension pulley 124, the tension pulley 124 is an idler pulley, and a position of the tension pulley 124 on the fixing plate 100 can be adjusted in a set direction, so that the synchronous belt 123 can be tensioned, thereby ensuring operation stability of the driving mechanism.

Referring to fig. 2, in some embodiments, a guide slot 150 is formed in the fixing plate 100 at a position corresponding to the tension wheel 124, the tension adjusting mechanism further includes a sliding member 151 mounted in the guide slot 150, and a connecting shaft 1241 connecting the sliding member 151 and the tension wheel 124, one end of the connecting shaft 1241 is fixedly connected to the sliding member 151, and the other end of the connecting shaft 1241 is rotatably connected to the tension wheel 124. The sliding member 151 is connected to the fixed plate 100 through a pre-tightening connection member, the pre-tightening connection member is used for limiting the sliding member 151 at a preset position in the guide slot 150, in some embodiments, two sliding grooves 1511 are formed in the sliding member 151 corresponding to two sides of the tensioning wheel 124, the two sliding grooves 1511 are arranged corresponding to two sides of the guide slot 150, the pre-tightening connection members connected to the fixed plate 100 at two sides of the guide slot 150 are respectively inserted into the two sliding grooves 1511, the pre-tightening connection members may be screws in threaded connection with the fixed plate, and the position of the sliding member 151 in the guide slot 150 can be changed by adjusting the screws.

The guide groove 150 may be a sliding groove formed in the fixing plate 100, the sliding member 151 may be a sliding block, and the pre-tightening connection member may be a screw connection member or a snap connection member connected between the sliding member 151 and the fixing plate 100.

In this embodiment, the two tensioning adjustment mechanisms are respectively disposed close to the motors 120 of the corresponding driving mechanisms and within the range defined by the virtual quadrangle R, the two tensioning adjustment mechanisms are respectively disposed on two sides of the fixing plate 100, and are symmetrically disposed, and the directions of the two tensioning wheels 124 are opposite.

The inner side of the timing belt 123 is wound around the driving pulley 121 and the driven pulley 122, and the outer side of the timing belt 123 is wound around the tension pulley 124. When the slider 151 is moved, the corresponding tension pulley 124 is also moved, and the movement of the tension pulley 124 can change the center distance between the tension pulley 124 and the driving pulley 121 and the driven pulley 122, so that the tension of the timing belt 123 can be adjusted by moving the tension pulley 124 while the length of the timing belt 123 is fixed.

In some embodiments, the fixing plate 100 is provided with a mounting hole, the rotating shaft 111 penetrates through the mounting hole, and two ends of the rotating shaft 111 are respectively located at two sides of the fixing plate 100; the rotating assembly further includes a bearing assembly 1114 installed in the installation hole, the bearing assembly 1114 is disposed between the rotating shaft 111 and the wall of the installation hole, and the rotating shaft 111 is rotatably connected to the fixing plate 100 through the bearing assembly 1114.

In one implementation, the mounting hole may be a through hole opened in the fixing plate 100, the rotating shaft 111 penetrates through the mounting hole, and both ends of the rotating shaft 111 are located at both sides of the fixing plate 100. The bearing assembly 1114 may include two deep groove ball bearings 1114a, 1114b juxtaposed in a vertical direction, the two deep groove ball bearings 1114a, 1114b may increase the radial load capacity of the rotating shaft 111, enhancing structural stability.

In some embodiments, an inner liner 1113 and an outer liner 1112 are disposed within the mounting bore, the outer liner 1112 is disposed between the outer race of the bearing assembly 1114 and the wall of the mounting bore, and the inner liner 1113 is disposed between the inner race of the bearing assembly 1114 and the rotating shaft 111. By arranging the inner bushing 1113 and the outer bushing 1112, the support rigidity of the upper deep groove ball bearing and the lower deep groove ball bearing can be effectively enhanced.

In some embodiments, the rotating assembly further includes an axial pre-tightening structure, the bearing assembly 1114 is coupled to the axial pre-tightening structure, the axial pre-tightening structure includes a retainer ring 1116 and an end cover 1111 disposed on upper and lower sides of the bearing assembly 1114, and the retainer ring 1116 and the end cover 1111 are configured to axially retain the bearing assembly 1114 in the mounting hole. The retainer ring 1116 is located on the lower side of the bearing assembly 1114, the end cover 1111 is located on the upper side of the bearing assembly 1114, the bearing assembly 1114 can be installed into the installation hole from the upper side of the installation hole, the retainer ring 1116 and the end cover 1111 can axially limit and pre-tighten the bearing assembly 1114, and the bearing assembly 1114 and the rotating shaft 111 are prevented from generating relative axial displacement in the movement process. Wherein, the end cover 1111 can be fixed on the fixing plate 100 by screws.

In this embodiment, the axial pre-tightening structure further includes a pre-tightening nut 1115 connected to the rotating shaft 111, the pre-tightening nut 1115 is disposed on the rotating shaft 111 at an end where the retaining ring 1116 is located, and the tightness between the retaining ring 1116 and the bearing assembly 1114 can be adjusted by rotating the pre-tightening nut 1115, so that the bearing assembly 1114 is mounted more stably.

The retainer 1116 is disposed on the rotating shaft 111 and rotates with the rotating shaft 111. One end of the retainer 1116 abuts against the bearing assembly 1114, when the lower end of the rotating shaft 111 is connected with the driven wheel 122, the other end of the retainer 1116 abuts against one end of the driven wheel 122, and the other end of the driven wheel 122 abuts against the pre-tightening nut 1115; when the upper end of the rotating shaft 111 is connected to the driven wheel 122, the other end of the retainer 1116 directly abuts against the pretensioner nut 1115.

Referring to fig. 1 and 2, the electromagnetic stirrer of the present embodiment further comprises an induction assembly 130 disposed in cooperation with the driving mechanisms, wherein one induction assembly 130 is disposed in correspondence with each driving mechanism. The sensing assembly 130 includes a sensor 132 disposed on the fixing plate 100 and a sensing member 133 fixed relative to the driven wheel 122, and the sensor 132 is configured to sense a rotation signal of the sensing member 133 in a non-contact manner.

The sensing member 133 may be a sheet structure, the sensing member 133 may be installed on the rotating shaft 111 of the driven wheel 122, the sensor 132 is installed on one side of the rotating shaft 111 through the fixing bracket 131, when the output shaft of the motor 120 rotates, the sensing member 133 may rotate along with the rotating shaft 111 of the driven wheel 122, when the sensing member 133 passes through the sensor 132 after rotating for one turn, the sensor 132 may sense a signal of the sensing member 133, and then may generate a change record of a sensing signal, so as to determine whether the driving mechanism normally operates. If the driving mechanism is abnormal, for example, after the synchronous belt 123 is damaged, the rotating shaft 111 of the driven wheel 122 does not rotate any more, so the sensing element 133 also stops rotating, the sensor 132 cannot sense the rotating signal of the sensing element, and therefore, the change of the sensing signal cannot be generated within a certain time, and further, the failure information of the driving system can be detected in time.

Fig. 6 is an external structural view of an electromagnetic stirrer according to an embodiment of the present application.

Referring to fig. 5 and 6, the electromagnetic stirrer of the present embodiment further includes a supporting plate 300, the supporting plate 300 is disposed on a side of the fixing plate 100 away from the magnetic rotation member 110, for example, at the bottom of the fixing plate 100, so that the supporting plate 300 is also referred to as a bottom plate. The support plate 300 is connected to the fixing plate 100 by a plurality of connecting posts 310, so that a certain accommodating space is formed between the support plate 300 and the fixing plate 100 for accommodating the driving mechanism located at the lower side of the fixing plate 100.

The electromagnetic stirrer of the present embodiment further includes a housing 500, the housing 500 is disposed between the stirring platform 200 and the fixing plate 100, and the plurality of sets of magnetic rotors 110 and the driving mechanism located on the upper side of the fixing plate 100 are accommodated in the housing 500.

In this embodiment, the fixing plate 100, the stirring platform 200 and the supporting plate 300 may be made of an aluminum alloy, but not limited to an aluminum alloy.

In some embodiments, a circuit board 322 is further installed on one side of the supporting plate 300, the motors 120 of the two driving mechanisms are connected to the circuit board 322 through conductive members, and the circuit board 322 can send control signals to the two motors 120 to control the two motors 120 to operate. Circuit board 322 sets up along vertical direction, is fixed in one side of backup pad 300 through mounting bracket 320, and circuit board 322's the outside still is equipped with protection casing 400, and protection casing 400 can play the guard action to circuit board 322, avoids circuit board 322 to damage.

It can be seen from the above embodiments that, the electromagnetic stirrer of this embodiment, when the multiple sets of magnetic rotation members 110 rotate reversely and synchronously, can generate relatively uniform rotating magnetic fields in the respective regions and the regions adjacent to the different magnetic rotation members 110, so as to achieve uniformity of electromagnetic stirring, effectively increase working area of the stirring platform 200, ensure uniformity of the magnetic fields in the respective regions of the stirring platform 200, and simultaneously satisfy sufficient stirring of high-concentration solutions, thereby greatly improving stirring experiment efficiency.

In addition, referring to fig. 7, in one embodiment, two sets of the magnetic rotors 110 are provided, namely, the magnetic rotors 110a and 100b, and the number of the magnetic rotors 110 in each set is three, that is, one set of the magnetic rotors 110 includes three magnetic rotors 110a, and the other set of the magnetic rotors 110 includes three magnetic rotors 110b. The three magnetic rotors 110a are respectively disposed at three vertexes of a virtual triangle T1 on the fixed plate 100, and the three magnetic rotors 110b are respectively disposed at three vertexes of another virtual triangle T2 on the fixed plate 100. The two virtual triangles T1 and T2 are symmetrically arranged and face opposite directions, one side of each of the two virtual triangles T1 and T2 is parallel, and a vertex of each of the two virtual triangles T1 and T2 is superposed with the midpoint of the opposite side of the vertex. In this embodiment, the stirring platform 200 may include six stirring regions, and a projection point of a center position of each stirring region in the thickness direction of the fixing plate 100 is a vertex of each of the two virtual triangles T1 and T2. The magnetic rotors 110a and 100b are driven by corresponding driving mechanisms, and when the magnetic rotors 110a and 100b rotate in opposite directions, they can generate superimposed rotating magnetic fields in the space region where the stirring platform 200 is located.

Referring to fig. 8, in one embodiment, the magnetic rotors 110 are provided with four sets, that is, the magnetic rotors 110a, 110b, 110c, 110d, the number of the magnetic rotors 110 in each set is two, two magnetic rotors 110a and two magnetic rotors 110b are respectively disposed at four vertices of a virtual quadrangle R1 on the fixed plate 100, and two magnetic rotors 110c and two magnetic rotors 110d are respectively disposed at four vertices of another virtual quadrangle R2 on the fixed plate 100. The two magnetic rotation pieces 110a and 110b are respectively disposed along two diagonal lines of the virtual quadrangle R1, and the two magnetic rotation pieces 110c and 110d are respectively disposed along two diagonal lines of the virtual quadrangle R2. In this embodiment, the stirring platform 200 may include eight stirring regions, and a projection point of a center position of each stirring region in the thickness direction of the fixing plate 100 is a vertex of each of the two virtual quadrangles R1 and R2. The magnetic rotors 110a, 110b, 110c, 110d are driven by corresponding driving mechanisms, and when the magnetic rotors 110 of adjacent groups rotate in opposite directions, superimposed rotating magnetic fields can be generated in the spatial region where the stirring platform 200 is located. The electromagnetic stirrer according to the embodiment of the present application is described above, and accordingly, the present application further provides an experimental facility, which includes an experimental platform and at least one electromagnetic stirrer according to the embodiment, where the electromagnetic stirrer is disposed on the experimental platform. The structure of the electromagnetic stirrer is described in the above embodiments, and is not described in detail here.

The experimental facilities that this embodiment provided, a plurality of magnetism of electromagnetic stirrer rotate the piece and can produce the rotating magnetic field of relative even in the region that the region at place and different magnetism rotated the piece adjacent region separately, realize the homogeneity of electromagnetic stirring, effectively increased stirring platform's working area, and then easily carry out large-scale stirring experiment. In addition, a plurality of electromagnetic stirrers are arranged on the experiment platform, so that a high-flux stirring experiment can be realized.

Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (16)

1. An electromagnetic stirrer, comprising:

the stirring device comprises a stirring platform, a fixed plate, a plurality of groups of magnetic rotating pieces and a driving system, wherein the fixed plate is connected with the stirring platform at intervals;

the magnetic rotating pieces are arranged on one side of the fixed plate close to the stirring platform and respectively correspond to different stirring areas of the stirring platform;

the driving system comprises a plurality of driving mechanisms, a plurality of the driving mechanisms are connected with the magnetic rotating pieces in a one-to-one correspondence mode, the driving mechanisms are used for driving the magnetic rotating pieces to rotate, wherein the magnetic rotating pieces are adjacently arranged and rotate in different directions, and the rotating fields which are overlapped are generated in the space area where the stirring platform is located.

2. The electromagnetic stirrer according to claim 1, wherein:

the multiple groups of magnetic rotating parts are arranged on the same side of the fixed plate along the same plane.

3. The electromagnetic stirrer according to claim 1, wherein:

the magnetic rotating pieces are provided with at least two groups, and the number of the magnetic rotating pieces in each group is at least two;

the magnetic rotors in the same group rotate in the same direction.

4. The electromagnetic stirrer according to claim 1, wherein:

the magnetic rotating pieces are arranged in two groups, the number of the magnetic rotating pieces in each group is two, four magnetic rotating pieces in each group are respectively arranged at four vertexes of a virtual quadrangle on the fixed plate, and the two groups of magnetic rotating pieces are respectively arranged along two diagonal lines of the virtual quadrangle;

the driving system comprises two driving mechanisms, wherein the two driving mechanisms are used for driving the magnetic rotation pieces to rotate in different directions respectively, the magnetic rotation pieces rotate in the same direction on the same diagonal line, and the magnetic rotation pieces rotate in different directions on different diagonal lines.

5. The electromagnetic stirrer according to claim 4 wherein said stirring platform comprises four stirring regions, and a projection point of a center position of each of said stirring regions in a thickness direction of said fixed plate is a vertex of said virtual quadrangle.

6. The electromagnetic stirrer according to claim 4, further comprising four rotating assemblies, each of said magnetic rotating members being connected to said fixed plate via said rotating assembly;

the rotating assembly comprises a rotating shaft which is rotatably connected to the fixed plate, and the magnetic rotating part is connected to the rotating shaft;

each driving mechanism is in transmission connection with two rotating shafts arranged along the same diagonal line and used for driving the two rotating shafts to rotate.

7. The electromagnetic stirrer according to claim 6 wherein:

the driving mechanism comprises a motor, a driving wheel, two driven wheels and a synchronous belt; the driving wheel is connected with the output shaft of the motor, the two driven wheels are respectively connected with the two rotating shafts arranged along the same diagonal line, and the synchronous belt is wound between the driving wheel and the two driven wheels.

8. The electromagnetic stirrer according to claim 6, wherein:

the two driving mechanisms have the same structure and are respectively arranged on two sides of the fixed plate.

9. The electromagnetic stirrer according to claim 7 wherein:

the rotating planes of the synchronous belts of the two driving mechanisms are parallel to the plane where the fixed plate is located; the synchronous belts of the two driving mechanisms are intersected in the projection in the thickness direction of the fixed plate.

10. The electromagnetic stirrer according to claim 9, wherein said drive mechanism further comprises a tension adjustment mechanism, said tension adjustment mechanism comprising a tension pulley mounted to said fixed plate, an inner side of said timing belt being wound around said drive pulley and said driven pulley, and an outer side of said timing belt being wound around said tension pulley.

11. The electromagnetic stirrer according to claim 10 wherein:

the position, corresponding to the tensioning wheel, of the fixing plate is provided with a guide groove, the tensioning adjusting mechanism further comprises a sliding piece arranged on the guide groove and a connecting shaft connected with the sliding piece and the tensioning wheel, one end of the connecting shaft is fixedly connected with the sliding piece, and the other end of the connecting shaft is rotatably connected with the tensioning wheel.

12. The electromagnetic stirrer according to claim 6, wherein:

the fixed plate is provided with a mounting hole, the rotating shaft penetrates through the mounting hole, and two ends of the rotating shaft are respectively positioned on two sides of the fixed plate;

the rotating assembly further comprises a bearing assembly arranged in the mounting hole and an axial pre-tightening structure for axially pre-tightening the bearing assembly, and the rotating shaft is rotatably connected to the fixed plate through the bearing assembly;

the bearing assembly is matched with the axial pre-tightening structure, the axial pre-tightening structure comprises retaining rings and end covers which are respectively arranged on the upper side and the lower side of the bearing assembly, and the retaining rings and the end covers are used for limiting the bearing assembly in the mounting hole in the axial direction.

13. The electromagnetic stirrer according to claim 7, wherein:

the wheel diameter of the driving wheel is larger than that of the driven wheel, and the wheel diameters of the driven wheels corresponding to the magnetic rotating pieces in each group are equal.

14. The electromagnetic stirrer according to claim 7, wherein:

the induction assembly comprises an inductor fixedly arranged relative to the fixing plate and an induction piece fixedly arranged relative to the rotating shaft, and the inductor is used for inducing a rotating signal of the induction piece rotating along with the rotating shaft.

15. The electromagnetic stirrer according to any one of claims 1 to 14 wherein:

still include backup pad and casing, the backup pad is located the fixed plate deviate from in one side that magnetism rotated the piece, the backup pad through a plurality of spliced poles with the fixed plate links to each other, the casing is located stirring platform with between the fixed plate, the multiunit magnetism rotated the piece and is held in the casing.

16. An assay device, comprising: an assay platform and at least one electromagnetic stirrer according to any one of claims 1 to 15 disposed on the assay platform.

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